CN111437008B

CN111437008B - Fibula long tendon full-length taking device and processing method thereof

Info

Publication number: CN111437008B
Application number: CN202010263582.8A
Authority: CN
Inventors: 周鹏
Original assignee: First Peoples Hospital of Changzhou
Current assignee: First Peoples Hospital of Changzhou
Priority date: 2020-04-07
Filing date: 2020-04-07
Publication date: 2021-06-15
Anticipated expiration: 2040-04-07
Also published as: CN111437008A

Abstract

The invention relates to the technical field of medical instruments, in particular to a full-length fibula tendon taking device and a processing method thereof. When the tendon taking device provided by the invention is used for cutting the fibula longissimus tendon of a patient, only a small incision of 1-2cm is needed to be taken at the lateral malleolus of the patient, so that the full-length fibula longissimus tendon can be completely cut and taken, and the situation that gracilis muscle or semitendinosus muscle needs to be additionally cut due to the insufficient length or diameter of the tendon can be avoided approximately, thereby reducing the operation trauma, effectively reducing the pain of the patient, effectively shortening the recovery time of the patient, and providing favorable conditions for improving the ligament reconstruction quality.

Description

Fibula long tendon full-length taking device and processing method thereof

Technical Field

The invention relates to the technical field of medical instruments, in particular to a full-length tendon extractor for a peroneal longus tendon and a processing method thereof.

Background

The fibula longus is located under the skin on the outer side of the lower leg and clings to the outer side surface of the fibula, and is a bicuspid muscle. From the fibula, the lateral side of the superior fibula 2/3, and the deep fascia of the lower leg. The tendon running downward is transferred to the plantar region of the foot through the posterior lateral malleolus, lateral calcaneus and the inferior fibular muscle support band, runs obliquely to the medial border of the foot, and ends at the 1 st cuneiform bone and the 1 st metatarsal bed part. The contraction of the muscles allows plantar flexion and eversion. The fibula tendon and the tibialis anterior tendon form a muscle loop to maintain the medial and lateral arch and transverse arch of the foot. The peroneal long muscle is innervated by the superficial peroneal nerve.

At present, the fibula tendon of a patient is required to be cut in ligament reconstruction surgery, the joint between the lateral malleolus and the proximal tendon muscle is generally cut, if the length or the diameter of the tendon is not enough, the gracilis muscle or the semitendinosus muscle is required to be cut additionally, one section from the lateral malleolus to a plantar dead point occupies about the full length of 1/3, the tendon is good in quality, the existing clinical technology cannot completely cut and take out the fibula tendon with the full length by utilizing minimally invasive surgery, the tendon taking device in the prior art is adopted, the length or the diameter of the cut tendon is often not enough, the gracilis muscle or the semitendinosus muscle is required to be cut additionally, accordingly, the surgical trauma is large, the pain of the patient is increased, the recovery of the patient is influenced, and the improvement of ligament.

Therefore, the full-length fibula tendon extractor and the processing method thereof are provided.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a full-length fibula tendon taking device, when the full-length fibula tendon taking device is used for cutting a patient's fibula tendon, only a small incision of 1-2cm is needed to be cut at the lateral malleolus of the patient, so that the full-length fibula tendon can be completely cut.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a tendon ware is got to fibula longus tendon full length, includes handheld operation portion, near-end surely gets subassembly and distal end surely gets the subassembly, the near-end surely get the subassembly with the distal end surely get the subassembly all with handheld operation portion cooperation is connected.

Through adopting above-mentioned technical scheme, through setting up handheld operation portion, subassembly and the distal end subassembly of surely getting is cut to the near-end, simultaneously with the near-end subassembly of surely getting and the distal end subassembly of surely getting all with handheld operation portion cooperation be connected, when using this to get tendon ware and surely get patient's fibula long tendon, only need get 1-2 cm's small incision in ankle department and just can completely surely take out a full length fibula long tendon, compare the tendon ware of getting among the prior art, use this to get tendon ware can reduce the operation incision by a large percentage, avoid needing to get gracilis muscle or semitendinosus muscle in addition again, the operation wound is little, reduce patient's misery, effectively shorten patient's recovered time simultaneously, provide favorable condition for improving ligament reconstruction quality.

Furthermore, the hand-held operation part comprises a handle, an electric push rod and an end cover, wherein one end of the handle is provided with a threaded hole, the other end of the handle is provided with a matching hole, the matching hole is coaxial with and communicated with the threaded hole, the electric push rod is fixedly arranged inside the matching hole, a telescopic rod of the electric push rod faces the threaded hole, and the end cover is screwed on the end part of one end of the handle, provided with the matching hole.

Through adopting above-mentioned technical scheme, the handle is used for holding this tendon ware of getting, and electric putter is used for driving near-end surely to get subassembly and distal end surely to get the subassembly and cut off the fibula long tendon, and the screw hole is used for threaded connection near-end surely to get subassembly and distal end surely to get the subassembly.

Furthermore, a groove is formed in the middle of one side face, back to the assembling hole, of the end cover, the groove is a hexagonal groove, a control switch is fixedly mounted on the outer portion of the handle, and the control switch is electrically connected with the electric push rod.

Through adopting above-mentioned technical scheme, the hexagonal recess is used for installing the end cover at the one end tip that the dress hole was seted up to the handle through hexagon socket spanner, and control switch is used for controlling electric putter's telescopic link and stretches out and draws back.

Further, the near-end cutting assembly comprises a first hollow supporting rod, a first tendon cutting seat, a first cutter, a first end cover, a first connecting rod, a first circular stop block and a first spring, both ends of the first hollow supporting rod are of an open structure, the first tendon cutting seat is fixedly installed at one end of the first hollow supporting rod, a notch and a bayonet are formed in the side wall of the first tendon cutting seat, the bayonet is communicated with the notch, the first cutter seat is movably installed inside the first tendon cutting seat, the first cutter is fixedly installed at one end of the first hollow supporting rod, the first end cover is screwed at the other end of the first hollow supporting rod, the first connecting rod is movably installed at the central position of the first end cover, and the one end of first connecting rod with the other end tip central point department fixed connection of first cutter seat, first circular dog fixed mounting be in the other end tip of first connecting rod, first spring suit is in the outside of first connecting rod, just first spring butt in first circular dog with between the first end cover, first cavity bracing piece is installed the one end of first end cover is the spiro union still in the inside of screw hole, first circular dog stretch into the inside of screw hole and with electric putter's telescopic link looks butt.

By adopting the technical scheme, the near-end cutting component is used for cutting off the near end of the fibula long tendon of the lower leg of a patient, when in use, the near-end cutting component is screwed at one end of the handle, a cut is made at the outer ankle, then the handle is held to enable the first tendon cutting seat to be sleeved outside the fibula long tendon through the cut, then the bayonet moves towards the near end of the fibula long tendon, when the near end of the fibula long tendon is reached, the extension of the telescopic rod of the electric push rod is controlled through the control switch, at the moment, the telescopic rod of the electric push rod drives the first circular stop block to move towards the first tendon cutting seat, the first circular stop block drives the first cutter seat to move towards the bayonet through the first connecting rod, the first cutter seat drives the first cutter seat to move towards the bayonet, the near end of the fibula long tendon is recorded between the first cutter and the bayonet, and the near end of the fibula long tendon, the proximal end of the fibula longissimus tendon is cut off, then the proximal end of the fibula longissimus tendon is pulled out by using hemostatic forceps, and the first tendon cutting seat is slowly pulled out, so that the cutting work of the proximal end of the fibula longissimus tendon of the lower leg is finished.

Further, the near-end surely gets the subassembly and still includes spacing seat, spacing seat fixed mounting be in on the inner wall of first tendon cutting seat, just spacing seat is close to first tendon cutting seat is kept away from the one end tip of first cavity bracing piece sets up, still reserve on the spacing seat have with breach matched with opening, the surface of first cavity bracing piece still is equipped with the length scale mark.

Through adopting above-mentioned technical scheme, spacing seat is used for restricting the position of first cutter, can prevent that first cutter from stretching out the outside of first tendon cutting seat and incising wound patient's other tissues, the opening is used for cooperateing with the breach, in order to make things convenient for the outside with first tendon cutting seat cover at the fibula longeron, surface at first cavity bracing piece sets up the length scale mark, the length scale mark is used for instructing the position that first tendon cutting seat reachd tendon muscle juncture roughly, conveniently utilize first cutter seat and first cutter to cut off tendon muscle juncture, can avoid first tendon cutting seat excessively to be close to fibula longeron tendon near-end can sharp muscle cut off, in order to avoid causing the increase amount of bleeding, the original intention of violating the wicresoft.

Further, the distal cutting assembly comprises a second hollow support rod, a bendable connecting rod, a second tendon cutting seat, a second cutter, a second end cover, a second connecting rod, a second circular stop block, a second spring, a butting seat, a round rod, an annular assembling seat, a connecting block, an arc-shaped convex block, a steel wire and a reset spring, wherein both ends of the second hollow support rod are of an open structure, the bendable connecting rod is fixedly installed at one end of the second hollow support rod, the second tendon cutting seat is fixedly installed at one end of the bendable connecting rod far away from the second hollow support rod, a circular through hole is formed in the side wall of the second tendon cutting seat, the second cutter seat is movably installed in the second tendon cutting seat, and the second cutter is fixedly installed at one end of the second cutter seat back to the bendable connecting rod, the second end cover is screwed on the end part of the other end of the second hollow supporting rod, the second connecting rod is movably arranged at the central position of the second end cover, the second round stop block is fixedly arranged on the second connecting rod back to the end part of the second tendon cutting seat, the second spring is sleeved on the outer part of the second connecting rod, the second spring is abutted against the second round stop block and the second end cover, the second hollow supporting rod back to the end of the second tendon cutting seat is screwed on the inner part of the threaded hole, the second round stop block extends into the inner part of the threaded hole and is abutted against the telescopic rod of the electric push rod, the abutting seat is fixedly sleeved on the outer part of the second connecting rod, the abutting seat is positioned on the second hollow supporting rod, and the abutting seat is abutted against the second end cover, the round rod is fixedly arranged in the second hollow supporting rod, the annular assembling seat is fixedly arranged on the inner wall of the second tendon cutting seat, the annular assembling seat is arranged close to one end part of the second tendon cutting seat back to the bendable connecting rod, the connecting block and the arc-shaped lug are both fixedly arranged on one end face of the annular assembling seat facing to the second cutter, the arc-shaped lug is aligned with the circular through hole and is arranged oppositely, the steel wire is arranged in the second hollow supporting rod and the bendable connecting rod in a penetrating way, one end of the steel wire is arranged at the other end part of the second connecting rod, and the other end of the steel wire sequentially penetrates through the round rod, the cylindrical channel and the connecting block and is fixedly connected with one end part of the second cutter seat facing to the annular assembling seat, the cylindrical channel is arranged at the central position of the second cutter seat, the reset spring is sleeved outside the steel wire and abuts against the connecting block and the second cutter seat.

By adopting the technical scheme, the far-end cutting component is used for cutting off the far end of the fibula longissimus tendon of the lower leg of a patient, when the device is used, the near-end cutting component is detached from one end of the handle, the far-end cutting component is screwed at one end of the handle, the cut-off near end of the fibula longissimus tendon is inserted into the second tendon cutting seat through the circular through hole, then the handle is held through the cut to move the second tendon cutting seat to the far end of the fibula longissimus tendon along the fibula tendon, when the device moves to the cuboid behind the lateral malleolus, the position between the lateral malleolus and the cuboid is pressed by hand, the flexible connecting rod 23 is bent by an angle of nearly 90 degrees and turns to the far-end stop point of the fibula longissimus tendon at the inner side of the sole, then the telescopic rod of the electric push rod is controlled by the control switch to extend, at the moment, the telescopic rod, the circular dog of second passes through the pulling of second cavity bracing piece drive steel wire, the steel wire pulls second cutter seat under the cooperation of round bar and connecting block and drives the motion of second cutter orientation butt seat, thereby extrude the distal end of fibula long tendon between second cutter and butt seat, along with the continuation removal of second cutter, the realization cuts off the distal end of fibula long tendon, then utilize hemostatic forceps to pull out the near-end of fibula long tendon, again slowly take out second tendon cutting seat, thereby accomplish the distal cut-off work of the fibula long tendon that cuts off little shank, and then realize cutting out the purpose of taking out the long tendon of full length of fibula completely through a incision.

Further, the flexible connecting rod includes first annular connecting seat, second annular connecting seat and the spring beam of making by the spring, first annular connecting seat fixed mounting in second cavity bracing piece orientation the one end tip of second tendon cutting seat, second annular connecting seat fixed mounting in second tendon cutting seat orientation the one end tip of second cavity bracing piece, spring beam fixed mounting in first annular connecting seat with between the second annular connecting seat.

Through adopting above-mentioned technical scheme, the flexible connecting rod comprises first annular connecting seat, second annular connecting seat and the spring beam of making by the spring for the flexible connecting rod can realize crooked, still possesses certain intensity after crooked simultaneously, can guarantee that the distal end surely gets the subassembly and can cut off the distal end of fibula longissimus tendon.

Furthermore, first annular connecting seat with the second annular connecting seat and the outside of spring lever all coats and has the PVC protective layer, and the surface roughness of PVC protective layer is not more than Ra0.1.

Through adopting above-mentioned technical scheme, the outside of first annular connecting seat and second annular connecting seat and spring beam all the cladding has the PVC protective layer, can prevent the inside tissue of the surperficial scratch patient's muscle of first annular connecting seat and second annular connecting seat and spring beam, can prevent simultaneously that the spring beam is when crooked, appear the gap on the spring beam and press from both sides the inside tissue of hindering patient's muscle, set up the roughness of surface of PVC protective layer and be not more than Ra0.1, make the surface of PVC protective layer more smooth, can reduce the resistance of flexible connecting rod surface and patient's muscle internal tissue, thereby guarantee that the distal end surely gets the distal end dead center that the subassembly can arrive the fibula length tendon smoothly.

The invention also provides a processing method of the fibula longissimus tendon full-length taking device, which comprises the following steps:

step one, preparing a handheld operation part, processing a handle, an end cover, a purchasing electric push rod and a control switch in an injection molding mode, and then assembling to process the handheld operation part;

step two, preparing a near-end cutting assembly, machining a first hollow supporting rod, a first tendon cutting seat, a first cutter, a first end cover, a first connecting rod, a first circular stop block and a first spring by adopting a machine tool, and then assembling to machine the near-end cutting assembly;

step three, preparing a far-end cutting assembly, machining a second hollow supporting rod, a bendable connecting rod, a second tendon cutting seat, a second cutter, a second end cover, a second connecting rod, a second circular stop block, a second spring, a circular rod, an annular assembling seat, a connecting block, an arc-shaped convex block, a steel wire and a reset spring by adopting a machine tool, then assembling, machining the far-end cutting assembly, and finishing the machining of the full-length tendon taking device for the fibula longissimus tendon.

By adopting the technical scheme, the processing method of the full-length fibula tendon extractor provided by the invention has the advantages of simple steps, easiness in realization, capability of effectively improving the processing efficiency and capability of effectively reducing the processing cost.

In summary, the invention mainly has the following beneficial effects:

according to the invention, the handheld operation part, the proximal cutting assembly and the distal cutting assembly are arranged, and the proximal cutting assembly and the distal cutting assembly are matched and connected with the handheld operation part, so that when the tendon taking device is used for cutting the fibula tendon of a patient, only a small incision of 1-2cm is needed to be cut at the lateral malleolus of the patient, and then the full-length fibula tendon can be completely cut.

Drawings

FIG. 1 is a schematic structural diagram of a fibula longus tendon full-length tendon extractor according to an embodiment;

FIG. 2 is a schematic structural diagram of a handheld operation part of a fibula longus tendon full-length tendon extractor according to an embodiment;

FIG. 3 is a schematic view of an assembled fibula longus tendon extractor and proximal cutting assembly in accordance with one embodiment;

FIG. 4 is a schematic cross-sectional view of the proximal cutting assembly of one embodiment of a long fibula tendon full length tendon remover;

FIG. 5 is an enlarged schematic view of the detail view B of FIG. 4;

FIG. 6 is a schematic view of an assembled fibula longus tendon extractor and distal cutting assembly in accordance with one embodiment;

FIG. 7 is an enlarged schematic view of the detail view A of FIG. 6;

FIG. 8 is an enlarged schematic view of a portion C of FIG. 9;

FIG. 9 is a schematic view of the distal cutting assembly of one embodiment of a long fibula tendon full length tendon remover;

FIG. 10 is an enlarged partial schematic view of FIG. 8;

fig. 11 is an enlarged schematic view of a partial view D of fig. 10.

In the figure: 1. a hand-held operation section; 2. a proximal resection assembly; 3. a distal cutting assembly; 4. a handle; 5. a threaded hole; 6. assembling holes; 7. an electric push rod; 8. an end cap; 9. a groove; 10. a control switch; 11. a first hollow support rod; 12. a first link; 13. a first end cap; 14. a first spring; 15. a first circular stop; 16. a first tendon cutting seat; 17. a notch; 18. a bayonet; 19. a first cutter holder; 20. a first cutter; 21. a limiting seat; 22. a second hollow support rod; 23. a bendable connecting rod; 24. a first annular connecting seat; 25. a spring lever; 26. a second annular connecting seat; 27. a second tendon cutting seat; 28. a second cutter holder; 29. a second link; 30. a butting seat; 31. a second end cap; 32. a second spring; 33. a second circular stop; 34. a steel wire; 35. a round bar; 36. an annular assembly seat; 37. an arc-shaped bump; 38. a second cutter; 39. a cylindrical passage; 40. connecting blocks; 41. a return spring; 42. a circular through hole; 43. length scale lines.

Detailed Description

The present invention is described in further detail below with reference to figures 1-11.

Example 1

The utility model provides a fibula longus tendon full length gets tendon ware, as shown in fig. 1, includes handheld operation portion 1, near-end surely gets subassembly 2 and distal end surely gets subassembly 3, near-end surely get subassembly 2 with distal end surely get subassembly 3 all with handheld operation portion 1 cooperatees and is connected.

Through adopting above-mentioned technical scheme, through setting up handheld operation portion 1, subassembly 2 is surely got to the near-end and subassembly 3 is surely got to the distal end, simultaneously with subassembly 2 is surely got to the near-end and subassembly 3 is surely got all to cooperate with handheld operation portion 1 to be connected with the distal end, when using this to get tendon ware and surely get patient's fibula long tendon, only need get 1-2cm incision in patient's lateral malleolus department and just can completely cut out a full length fibula long tendon, compare the tendon ware of getting among the prior art, use this to get tendon ware general rate and can avoid getting gracilis muscle or semitendinosus muscle again, thereby it is little to reduce the operation wound, effectively reduce patient's misery, effectively shorten patient's recovered time simultaneously, provide favorable condition for improving ligament reconstruction quality.

Preferably, as shown in fig. 2, the handheld operation portion 1 includes a handle 4, an electric push rod 7 and an end cover 8, wherein one end of the handle 4 is provided with a threaded hole 5, and the other end of the handle 4 is provided with a fitting hole 6, the fitting hole 6 is coaxial with and communicated with the threaded hole 5, the electric push rod 7 is fixedly installed inside the fitting hole 6, a telescopic rod of the electric push rod 7 is arranged towards the threaded hole 5, and the end cover 8 is screwed on an end portion of the handle 4, at which the end portion of the handle 4 is provided with the threaded hole 6.

Through adopting above-mentioned technical scheme, handle 4 is used for holding this tendon ware of getting, and electric putter 7 is used for driving near-end cutting subassembly 2 and distal end cutting subassembly 3 and cuts off the fibula long tendon, and screw hole 5 is used for threaded connection near-end cutting subassembly 2 and distal end cutting subassembly 3.

Preferably, as shown in fig. 2, a recess 9 is centrally formed in a side surface of the end cap 8 facing away from the fitting hole 6, the recess 9 is a hexagonal recess, a control switch 10 is further fixedly mounted on the exterior of the handle 4, and the control switch 10 is electrically connected to the electric push rod 7.

Through adopting above-mentioned technical scheme, hexagonal recess is used for installing end cover 8 in the one end tip that equips hole 6 is seted up to handle 4 through the allen key, and control switch 10 is used for controlling electric putter 7's telescopic link to stretch out and draw back.

Preferably, as shown in fig. 2-5, the proximal end cutting assembly 2 includes a first hollow support rod 11, a first tendon cutting seat 16, a first cutter seat 19, a first cutter 20, a first end cap 13, a first link 12, a first circular stopper 15 and a first spring 14, both ends of the first hollow support rod 11 are open structures, the first tendon cutting seat 16 is fixedly installed at one end of the first hollow support rod 11, a notch 17 and a bayonet 18 are opened on a side wall of the first tendon cutting seat 16, the bayonet 18 is communicated with the notch 17, the first cutter seat 19 is movably installed inside the first tendon cutting seat 16, the first cutter 20 is fixedly installed at one end of the first cutter seat 19 facing away from the first hollow support rod 11, the first end cap 13 is screwed to the other end of the first hollow support rod 11, first connecting rod 12 movable mounting be in the central point of first end cap 13 puts the department, just the one end of first connecting rod 12 with the other end tip central point of first cutter seat 19 puts fixed connection, first circular dog 15 fixed mounting be in the other end tip of first connecting rod 12, first spring 14 suit is in the outside of first connecting rod 12, just first spring 14 butt in first circular dog 15 with between the first end cap 13, first cavity bracing piece 11 is installed the one end of first end cap 13 is the spiro union still is in the inside of screw hole 5, first circular dog 15 stretches into the inside of screw hole 5 and with electric putter 7's telescopic link looks butt.

By adopting the technical scheme, the proximal cutting assembly 2 is used for cutting off the proximal end of the fibula longissimus tendon, when in use, the proximal cutting assembly 2 is screwed at one end of the handle 4, a cut is cut at the lateral malleolus, then the handle 4 is held to enable the first tendon cutting seat 16 to be sleeved outside the fibula longissimus tendon through the notch 17 by the first tendon cutting seat 16, then the proximal end of the fibula longissimus tendon is moved along the fibula longissimus tendon, when the proximal end of the fibula longissimus tendon is reached, the extension of the telescopic rod of the electric push rod 7 is controlled through the control switch 10, at the moment, the telescopic rod of the electric push rod 7 drives the first circular stopper 15 to move towards the first tendon cutting seat 16, the first circular stopper 15 drives the first cutter seat 19 to move towards the bayonet 18 through the first connecting rod 12, the first cutter seat 19 drives the first cutter 20 to move towards the bayonet 18, and the proximal end of the fibula longissimus tendon is, as the first cutter 20 continues to move, the proximal end of the fibula tendon is cut off, and then the proximal end of the fibula tendon is pulled out by the hemostatic forceps, and the first tendon cutting seat 16 is slowly pulled out, thereby completing the cutting operation of cutting off the proximal end of the fibula tendon of the calf portion.

Preferably, as shown in fig. 3 and 5, the proximal cutting assembly 2 further includes a limiting seat 21, the limiting seat 21 is fixedly mounted on the inner wall of the first tendon cutting seat 16, the limiting seat 21 is adjacent to the end of the first tendon cutting seat 16 far away from the first hollow support rod 11, a notch matched with the notch 17 is reserved on the limiting seat 21, and a length scale mark 43 is further disposed on the surface of the first hollow support rod 11.

Through adopting above-mentioned technical scheme, spacing seat 21 is used for restricting the position of first incision sword 20, can prevent that first incision sword 20 from stretching out the outside of first tendon cutting seat 16 and incising wound patient's other tissues, the breach is used for cooperateing with breach 17, in order to conveniently overlap first tendon cutting seat 16 in the outside of fibula longus tendon, set up length scale mark 43 on the surface of first hollow supporting rod 11, length scale mark 43 is used for instructing first tendon cutting seat 16 and roughly reaches the position of tendon muscle juncture, conveniently utilize first incision seat 19 and first incision sword 20 to cut off tendon muscle juncture, can avoid first tendon cutting seat 16 excessively to be close to fibula longus tendon near-end can sharp muscle cut off, in order to avoid causing the increase amount of bleeding, violate the original purpose of wicresoft.

Preferably, as shown in fig. 2 and 6-11, the distal end cutting assembly 3 includes a second hollow support rod 22, a bendable connecting rod 23, a second tendon cutting seat 27, a second cutter seat 28, a second cutter 38, a second end cap 31, a second connecting rod 29, a second circular stopper 33, a second spring 32, an abutting seat 30, a round rod 35, an annular fitting seat 36, a connecting block 40, an arc-shaped protrusion 37, a steel wire 34 and a return spring 41, wherein both ends of the second hollow support rod 22 are open, the bendable connecting rod 23 is fixedly installed at one end of the second hollow support rod 22, the second tendon cutting seat 27 is fixedly installed at one end of the bendable connecting rod 23 far away from the second hollow support rod 22, a circular through hole 42 is opened on a side wall of the second tendon cutting seat 27, the second cutter seat 28 is movably installed inside the second tendon cutting seat 27, the second cutter 38 is fixedly installed at one end of the second cutter seat 28 opposite to the bendable connecting rod 23, the second end cap 31 is screwed on the other end of the second hollow supporting rod 22, the second connecting rod 29 is movably installed at the center of the second end cap 31, the second circular stopper 33 is fixedly installed at one end of the second connecting rod 29 opposite to the second tendon cutting seat 27, the second spring 32 is sleeved on the outside of the second connecting rod 29, the second spring 32 abuts between the second circular stopper 33 and the second end cap 31, one end of the second hollow supporting rod 22 opposite to the second tendon cutting seat 27 is further screwed inside the threaded hole 5, the second circular stopper 33 extends into the threaded hole 5 and abuts against the telescopic rod of the electric push rod 7, the abutting seat 30 is fixedly sleeved outside the second connecting rod 29, the abutting seat 30 is located on the second hollow supporting rod 22, the abutting seat 30 abuts against the second end cover 31, the round rod 35 is fixedly installed inside the second hollow supporting rod 22, the annular assembling seat 36 is fixedly installed on the inner wall of the second tendon cutting seat 27, the annular assembling seat 36 is arranged adjacent to one end portion, back to the bendable connecting rod 23, of the second tendon cutting seat 27, the connecting block 40 and the arc-shaped projection 37 are both fixedly installed on one end face, facing the second cutter 38, of the annular assembling seat 36, the arc-shaped projection 37 is arranged in alignment with the circular through hole 42, the connecting block 40 and the arc-shaped projection 37 are oppositely arranged, the steel wire 34 penetrates through the second supporting rod hollow 22 and the bendable connecting rod 23, one end of the steel wire 34 and the other end of the second connecting rod 29, and the other end of the steel wire 34 sequentially passes through the round rod 35, the cylindrical channel 39 and the connecting block 40 and is fixedly connected with one end of the second cutter holder 28 facing the annular assembling holder 36, the cylindrical channel 39 is arranged at the center of the second cutter holder 28, the return spring 41 is sleeved outside the steel wire 34, and the return spring 41 abuts between the connecting block 40 and the second cutter holder 28.

By adopting the technical scheme, the distal cutting component 3 is used for cutting off the distal end of the fibula longissimus tendon of the sole of a patient, when in use, the proximal cutting component 2 is detached from one end of the handle 4, the distal cutting component 3 is screwed at one end of the handle 4, the cut-off proximal end of the fibula longissimus tendon is inserted into the second tendon cutting seat 27 through the circular through hole 42, then the handle 4 is held through the cut, the second tendon cutting seat 27 moves to the distal end of the fibula longissimus tendon along the fibula longissimus tendon, when the proximal end moves to the cuboid bone behind the lateral malleolus, the position between the lateral malleolus and the cuboid bone is pressed by hand, the flexible connecting rod 23 is bent by an angle of nearly 90 degrees and turns to the distal end stop of the fibula longissimus tendon at the inner side of the sole, then the extension of the telescopic rod of the electric push rod 7 is controlled by the control switch 10, at the moment, the telescopic rod of the electric push rod 7 drives, second circular dog 33 drives the pulling of steel wire 34 through second hollow support rod 22, steel wire 34 pulls second cutter seat 28 and drives second cutter 38 towards butt seat 30 motion under the cooperation of round bar 35 and connecting block 40, thereby extrude the distal end of fibula long tendon between second cutter 38 and butt seat 30, along with the continuation removal of second cutter 38, the realization cuts off the distal end of fibula long tendon, then utilize hemostatic forceps to pull out the near-end of fibula long tendon, take out second tendon cutting seat 27 slowly, thereby accomplish the distal cutting off work of the fibula long tendon that cuts off the shank, and then realize cutting out the mesh of a full length fibula long tendon completely through a incision.

Preferably, as shown in fig. 9, the bendable connecting rod 23 includes a first annular connecting seat 24, a second annular connecting seat 26 and a spring rod 25 made of a spring, the first annular connecting seat 24 is fixedly installed at an end of the second hollow supporting rod 22 facing the second tendon cutting seat 27, the second annular connecting seat 26 is fixedly installed at an end of the second tendon cutting seat 27 facing the second hollow supporting rod 22, and the spring rod 25 is fixedly installed between the first annular connecting seat 24 and the second annular connecting seat 26.

Through adopting above-mentioned technical scheme, flexible connecting rod 23 comprises first annular connecting seat 24, second annular connecting seat 26 and the spring lever 25 of being made by the spring for flexible connecting rod 23 can realize crooked, still possesses certain intensity after crooked simultaneously, can guarantee that distal end surely gets subassembly 3 and can cut off the distal end of fibula long tendon.

Preferably, the first annular connecting seat 24, the second annular connecting seat 26 and the spring rod 25 are coated with PVC protection layers, and the surface roughness of the PVC protection layers is not greater than ra0.1.

Through adopting above-mentioned technical scheme, the outside at first annular connecting seat 24 and second annular connecting seat 26 and spring beam 25 all coats and has the PVC protective layer, can prevent the inside tissue of surface scratch patient's muscle of first annular connecting seat 24 and second annular connecting seat 26 and spring beam 25, can prevent spring beam 25 when the bending simultaneously, appear the gap on the spring beam 25 and press from both sides the inside tissue of patient's muscle, the roughness setting of the surface of PVC protective layer is not more than Ra0.1, make the surface of PVC protective layer more smooth, can reduce the resistance of 23 surfaces of flexible connecting rod and the inside tissue of patient's muscle, thereby guarantee that distal end surely gets the distal end stop that subassembly 3 can reach the long tendon of fibula smoothly.

step one, preparing a handheld operation part 1, processing a handle 4, an end cover 8, a purchasing electric push rod 7 and a control switch 10 in an injection molding mode, and then assembling with reference to the attached drawing 2 to process the handheld operation part 1;

step two, preparing a proximal cutting assembly 2, machining a first hollow support rod 11, a first tendon cutting seat 16, a first cutter seat 19, a first cutter 20, a first end cover 13, a first connecting rod 12, a first circular stop block 15 and a first spring 14 by using a machine tool, and then assembling the components with reference to the attached drawings 3-5 to machine the proximal cutting assembly 2;

step three, preparing the distal cutting component 3, machining the second hollow support rod 22, the bendable connecting rod 23, the second tendon cutting seat 27, the second cutter seat 28, the second cutter 38, the second end cover 31, the second connecting rod 29, the second circular stopper 33, the second spring 32, the circular rod 35, the annular assembling seat 36, the connecting block 40, the arc-shaped projection 37, the steel wire 34 and the return spring 41 by adopting a machine tool, and then assembling the components with reference to the attached drawings 6-11, so as to machine the distal cutting component 3, and thus, the machining of the full-length fibula tendon taking device is completed.

By adopting the technical scheme, the processing method of the full-length fibula tendon extractor provided by the invention has the advantages of simple steps, easiness in implementation, capability of effectively improving the processing efficiency and effectively reducing the processing cost, and the processing method can be completely implemented by the prior art.

Example 2

The difference from the embodiment 1 is that the surface of the handle 4 is further provided with a protective layer, and the protective layer is prepared by the following method:

weighing the following raw materials in parts by weight: 15-18 parts of epoxy resin, 3-5 parts of titanium dioxide powder, 4-8 parts of copper oxide powder, 4-8 parts of nano silver powder, 1-3 parts of alcohol ester, 1-3 parts of triethanolamine, 1-2 parts of emulsified silicone oil and 30-40 parts of water;

s1, adding weighed dodecyl alcohol ester, triethanolamine, emulsified silicone oil and water into a stirrer, and stirring for 20-30min at the stirring speed of 600-800r/min to obtain a mixed solution;

s2, adding epoxy resin, titanium dioxide powder, copper oxide powder and nano silver powder into a grinder to be ground until the particle diameter of the material is not more than 200nm, and thus obtaining a mixed powder material;

s3, adding the mixed solution prepared in the step S1 and the mixed powder material prepared in the step S2 into a reaction kettle, stirring for 25-35min, setting the stirring speed of the reaction kettle to be 700-900r/min and the temperature to be 100-120 ℃, and thus obtaining the protective coating;

s4, wiping the surface of the handle 4 clean by dipping alcohol with dust-free cloth, putting the handle 4 into the protective coating prepared in the step S3 after drying, soaking for 2-4min, and taking out;

s5, when no liquid drips on the surface of the handle 4, putting the handle 4 into an oven for drying and curing, wherein the drying and curing temperature is 80-100 ℃, and the drying time is 20-30min, namely, the protective layer is prepared on the surface of the handle 4.

The handle 4 of example 1-2 was placed in a bacteria incubator under the same conditions in the laboratory for 10 days and then removed and observed under a microscope and the results are recorded as follows:

examples	Observation results
		Example 1	The surface of the handle 4 is distributed with a plurality of bacterial colonies
Example 2	Substantially no bacterial colonies are distributed on the surface of the handle 4

The comparative analysis of the results observed from the above table shows that the embodiment 2 is the optimal embodiment, by adopting the above technical scheme, the process for preparing the protective coating is simple in steps and easy to implement, the prepared protective coating is moderate in viscosity, not easy to delaminate, free of bubble generation, fully combined in components and good in comprehensive performance, so that the protective coating can form a good coating after construction, is not easy to crack and has a good film forming effect, the prepared protective layer has good corrosion resistance, antibacterial property, skid resistance and ageing resistance, has good adhesion and is not easy to fall off, the corrosion resistance, antibacterial property, skid resistance and ageing resistance of the handle 4 can be effectively improved, and particularly, the surface of the handle 4 can be prevented from being nourished with a large amount of bacteria in the long-term use process of the tendon taking device.

The working principle is as follows: this tendon ware is got to fibula longeron full length, through setting up handheld operation portion 1, subassembly 2 is got to the near-end surely and subassembly 3 is got to the distal end surely, simultaneously with subassembly 2 is got to the near-end surely and subassembly 3 is got to the distal end surely all cooperatees with handheld operation portion 1 and is connected, when using this to get tendon ware and surely get patient's fibula longeron tendon, only need get 1-2cm incision in patient's lateral malleolus department and just can completely cut out a full length fibula longeron tendon, compare get the tendon ware among the prior art, use this to get reducible operation incision of tendon ware, the operation wound is little, effectively reduce patient's misery, effectively shorten patient's recovered time simultaneously, provide favorable condition for improving ligament reconstruction quality.

The using method comprises the following steps: firstly cutting the proximal end of the fibula longissimus tendon, screwing the proximal cutting component 2 at one end of a handle 4, cutting a cut at the external malleolus, holding the handle 4 through the cut, sleeving a bayonet 18 outside the fibula longissimus tendon through a notch 17 by a first tendon cutting seat 16, then moving the proximal end of the fibula longissimus tendon along the fibula tendon, controlling the extension of a telescopic rod of an electric push rod 7 through a control switch 10 when the proximal end of the fibula longissimus tendon is reached, driving a first circular stopper 15 to move towards the first tendon cutting seat 16 by the telescopic rod of the electric push rod 7, driving a first cutter seat 19 to move towards the bayonet 18 through a first connecting rod 12 by the first circular stopper 15, driving a first cutter 20 to move towards the bayonet 18 by the first cutter seat 19, recording the proximal end of the fibula longissimus tendon between the first cutter 20 and the bayonet 18, cutting the proximal end of the fibula longissimus tendon along with the continuous movement of the first cutter 20, then, the proximal end of the fibula longissimus tendon is pulled out by using the hemostatic forceps, and the first tendon cutting seat 16 is slowly pulled out, so that the cutting work of the proximal end of the fibula longissimus tendon of the lower leg is completed;

when cutting the far end of the fibula longissimus tendon, the near-end cutting component 2 is detached from one end of the handle 4, the far-end cutting component 3 is screwed at one end of the handle 4, the cut near end of the fibula longissimus tendon is inserted into the second tendon cutting seat 27 through the circular through hole 42, then the handle 4 is held by the hand to move the second tendon cutting seat 27 to the far end of the fibula longissimus tendon along the fibula longissimus tendon, when the proximal end is moved to the cuboid behind the lateral malleolus, the rear of the lateral malleolus is pressed by the hand to the position between the cuboids, the flexible connecting rod 23 is bent by nearly 90 degrees and turns to the far-end stop point of the fibula longissimus tendon at the inner side of the sole, then the telescopic rod of the electric push rod 7 is controlled to extend by the control switch 10, at the moment, the telescopic rod of the electric push rod 7 drives the second circular block 33 to move towards the second tendon cutting seat 27, the second circular, the steel wire 34 pulls second cutter seat 28 and drives second cutter 38 and move towards butt seat 30 under the cooperation of round bar 35 and connecting block 40, thereby extrude the distal end of fibula longissimus tendon between second cutter 38 and butt seat 30, along with the continuation removal of second cutter 38, the realization cuts off the distal end of fibula longissimus tendon, then utilize hemostatic forceps to pull out the proximal end of fibula longissimus tendon, take out second tendon cutting seat 27 slowly, thereby accomplish the distal cutting off work of the fibula longissimus tendon that cuts off little shank, and then realize cutting out the purpose of taking out a full length fibula longissimus tendon completely through a incision.

The parts not involved in the present invention are the same as or can be implemented by the prior art. The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a fibula long tendon full length gets tendon ware which characterized in that: the cutting device comprises a handheld operation part (1), a near-end cutting assembly (2) and a far-end cutting assembly (3), wherein the near-end cutting assembly (2) and the far-end cutting assembly (3) are matched and connected with the handheld operation part (1);

the handheld operation part (1) comprises a handle (4), an electric push rod (7) and an end cover (8), wherein a threaded hole (5) is formed in one end of the handle (4), an assembling hole (6) is formed in the other end of the handle (4), the assembling hole (6) is coaxial with and communicated with the threaded hole (5), the electric push rod (7) is fixedly installed inside the assembling hole (6), a telescopic rod of the electric push rod (7) faces the threaded hole (5), and the end cover (8) is in threaded connection with the end part, provided with the assembling hole (6), of the handle (4);

the near-end cutting assembly (2) comprises a first hollow supporting rod (11), a first tendon cutting seat (16), a first cutter seat (19), a first cutter (20), a first end cover (13), a first connecting rod (12), a first circular stop block (15) and a first spring (14), both ends of the first hollow supporting rod (11) are both of an open structure, the first tendon cutting seat (16) is fixedly installed at one end of the first hollow supporting rod (11), a notch (17) and a bayonet (18) are formed in the side wall of the first tendon cutting seat (16), the bayonet (18) is communicated with the notch (17), the first cutter seat (19) is movably installed inside the first tendon cutting seat (16), the first cutter (20) is fixedly installed at the end of the first hollow supporting rod (11) opposite to the first cutter seat (19), the first end cover (13) is screwed on the other end part of the first hollow support rod (11), the first connecting rod (12) is movably arranged at the central position of the first end cover (13), and one end of the first connecting rod (12) is fixedly connected with the center of the end part of the other end of the first cutter seat (19), the first round block (15) is fixedly arranged at the end part of the other end of the first connecting rod (12), the first spring (14) is sleeved outside the first connecting rod (12), and the first spring (14) is abutted between the first circular stop block (15) and the first end cover (13), one end of the first hollow support rod (11) provided with the first end cover (13) is also screwed in the threaded hole (5), the first round stop block (15) extends into the threaded hole (5) and is abutted to the telescopic rod of the electric push rod (7).

2. The fibula tendon full-length extractor of claim 1, which is characterized in that: a groove (9) is formed in the middle of one side face, back to the assembling hole (6), of the end cover (8), the groove (9) is a hexagonal groove, a control switch (10) is fixedly mounted on the outer portion of the handle (4), and the control switch (10) is electrically connected with the electric push rod (7).

3. The fibula tendon full-length extractor of claim 1, which is characterized in that: the proximal end surely gets subassembly (2) still includes spacing seat (21), spacing seat (21) fixed mounting be in on the inner wall of first tendon cutting seat (16), just spacing seat (21) are close to first tendon cutting seat (16) is kept away from the one end tip of first cavity bracing piece (11) sets up, still reserve on spacing seat (21) have with breach (17) matched with opening, the surface of first cavity bracing piece (11) still is equipped with length scale mark (43).

4. The fibula tendon full-length extractor of claim 1, which is characterized in that: the far-end cutting assembly (3) comprises a second hollow supporting rod (22), a bendable connecting rod (23), a second tendon cutting seat (27), a second cutter seat (28), a second cutter (38), a second end cover (31), a second connecting rod (29), a second circular stop block (33), a second spring (32), a butting seat (30), a round rod (35), an annular assembling seat (36), a connecting block (40), an arc-shaped convex block (37), a steel wire (34) and a return spring (41), wherein both ends of the second hollow supporting rod (22) are of an open structure, the bendable connecting rod (23) is fixedly installed at one end of the second hollow supporting rod (22), the second tendon cutting seat (27) is fixedly installed at one end of the bendable connecting rod (23) far away from the second hollow supporting rod (22), and a circular through hole (42) is formed in the tendon side wall of the second cutting seat (27), the second cutter seat (28) is movably mounted inside the second tendon cutting seat (27), the second cutter (38) is fixedly mounted on the second cutter seat (28) facing away from one end of the bendable connecting rod (23), the second end cap (31) is screwed on the other end of the second hollow supporting rod (22), the second connecting rod (29) is movably mounted on the central position of the second end cap (31), the second circular stopper (33) is fixedly mounted on the second connecting rod (29) facing away from one end of the second tendon cutting seat (27), the second spring (32) is sleeved on the outside of the second connecting rod (29), the second spring (32) is abutted between the second circular stopper (33) and the second end cap (31), and one end of the second hollow supporting rod (22) facing away from the second tendon cutting seat (27) is screwed on the inside of the threaded hole (5), the second round block (33) extends into the threaded hole (5) and abuts against the telescopic rod of the electric push rod (7), the abutting seat (30) is fixedly sleeved outside the second connecting rod (29), the abutting seat (30) is positioned on the second hollow supporting rod (22), the abutting seat (30) abuts against the second end cover (31), the round rod (35) is fixedly installed inside the second hollow supporting rod (22), the annular assembling seat (36) is fixedly installed on the inner wall of the second tendon cutting seat (27), the annular assembling seat (36) is adjacent to one end part, facing away from the flexible connecting rod (23), of the second tendon cutting seat (27), the connecting block (40) and the arc-shaped convex block (37) are both fixedly installed on one end face, facing the second cutter (38), of the annular assembling seat (36), the arc-shaped convex block (37) is aligned with the circular through hole (42), the connecting block (40) and the arc-shaped convex block (37) are oppositely arranged, the steel wire (34) is arranged in the second hollow supporting rod (22) and the bendable connecting rod (23) in a penetrating way, one end of the steel wire (34) and the other end of the second connecting rod (29), and the other end of the steel wire (34) sequentially passes through the round rod (35), the cylindrical channel (39) and the connecting block (40) and is fixedly connected with one end part of the second cutter seat (28) facing the annular assembling seat (36), the cylindrical channel (39) is arranged at the central position of the second cutter seat (28), the return spring (41) is sleeved outside the steel wire (34), and the return spring (41) is abutted between the connecting block (40) and the second cutter seat (28).

5. The fibula tendon full-length extractor of claim 4, which is characterized in that: bendable connecting rod (23) includes first annular connecting seat (24), second annular connecting seat (26) and spring lever (25) made by the spring, first annular connecting seat (24) fixed mounting be in second cavity bracing piece (22) orientation the one end tip of second tendon cutting seat (27), second annular connecting seat (26) fixed mounting be in second tendon cutting seat (27) orientation the one end tip of second cavity bracing piece (22), spring lever (25) fixed mounting be in first annular connecting seat (24) with between second annular connecting seat (26).

6. The fibula tendon full-length extractor of claim 5, which is characterized in that: the first annular connecting seat (24), the second annular connecting seat (26) and the spring rod (25) are coated with PVC protective layers, and the surface roughness of the PVC protective layers is not larger than Ra0.1.

7. A method for processing the fibula tendon full-length extractor of any one of claims 1 to 6, which comprises the following steps: the method comprises the following steps:

step one, preparing a handheld operation part (1), processing a handle (4), an end cover (8), a purchasing electric push rod (7) and a control switch (10) in an injection molding mode, and then assembling to process the handheld operation part (1);

step two, preparing a near-end cutting assembly (2), machining a first hollow support rod (11), a first tendon cutting seat (16), a first cutter seat (19), a first cutter (20), a first end cover (13), a first connecting rod (12), a first round stop block (15) and a first spring (14) by adopting a machine tool, and then assembling to machine the near-end cutting assembly (2);

step three, prepare distal end and surely get subassembly (3), adopt lathe processing second cavity bracing piece (22), flexible connecting rod (23), second tendon cutting seat (27), second cutter seat (28), second cutter (38), second end cover (31), second connecting rod (29), the circular dog of second (33), second spring (32), round bar (35), annular dress seat (36), connecting block (40), arc lug (37), steel wire (34) and reset spring (41) are joined in marriage to the annular, then assemble, with this processing distal end surely get subassembly (3), from this, the processing of the tendon ware is got to fibula longus tendon full length.