CN111134812A - Single-rod type bone moving device - Google Patents
Single-rod type bone moving device Download PDFInfo
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- CN111134812A CN111134812A CN201911385020.4A CN201911385020A CN111134812A CN 111134812 A CN111134812 A CN 111134812A CN 201911385020 A CN201911385020 A CN 201911385020A CN 111134812 A CN111134812 A CN 111134812A
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 105
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 230000007547 defect Effects 0.000 claims description 9
- 238000001125 extrusion Methods 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 208000010392 Bone Fractures Diseases 0.000 description 10
- 230000000149 penetrating effect Effects 0.000 description 9
- 206010017076 Fracture Diseases 0.000 description 8
- 230000035876 healing Effects 0.000 description 4
- 210000001519 tissue Anatomy 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 3
- 230000010478 bone regeneration Effects 0.000 description 2
- 210000004872 soft tissue Anatomy 0.000 description 2
- 230000004936 stimulating effect Effects 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 230000018678 bone mineralization Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000004938 stress stimulation Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
- A61B17/66—Alignment, compression or distraction mechanisms
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention provides a single-rod type bone moving device. Move device major structure including the bone, excellent needle presss from both sides and spicule, the bone is moved device major structure and is included base pole and sleeve pipe, the base pole is first including middle adjustment section and both ends, the second canned paragraph, sleeve pipe slip cap is established on the adjustment section, be equipped with axial extension's guide way on the adjustment section, removable installation has the guide key with guide way direction sliding fit on the sleeve pipe, the surface of adjustment section is equipped with the external screw thread, sheathed tube both ends are equipped with respectively and carry out screw-thread fit through internal thread and external screw thread first, the second nut, through revolving soon first, the second nut is along axial displacement with driving sleeve pipe, it is first, install excellent needle clamp and spicule on the second canned paragraph and fix with the both ends of treating the bone that pulls, install excellent needle clamp and spicule on the sleeve pipe. Has the advantages of simple structure, easy skeleton fixation, low cost, convenient and quick operation, and capability of being combined with a ring-type external fixing bracket and a combined external fixing bracket for use.
Description
Technical Field
The invention relates to a single-rod type bone moving device.
Background
The bone moving device is a special device for realizing bone extension, the bone moving is stretching and forming bone, mainly aiming at bone regeneration of bone defect, the bone moving device cuts the proximal end or the distal end of the bone defect, cuts the bone, reserves soft tissue and blood supply, fixes two ends of the bone, slowly pulls the cut free bone segment towards the defect, continuously stimulates organism tissues, excites the regeneration potential of the organism tissues, enables the cut bone gap to form new bone, and achieves the aim of bone regeneration. The traditional external fixation support for realizing bone extension is a ring-type external fixation support or a rail-type external fixation support, has the defects of complex structure, complex operation, incapability of freely threading a needle during screw fixation and appropriate stress stimulation on a fracture end, stress shielding of the external fixation support, delayed bone healing, nonhealing, low bone mineralization speed, long time for putting on a frame and the like, and limits popularization and application of the external fixation support.
Disclosure of Invention
The invention aims to provide a single-rod type bone moving device which has simple structure, convenient operation and easy fixation, can stimulate axial stress at a fracture end and accelerate bone healing.
The technical scheme of the invention is realized as follows:
the single-rod type bone moving device comprises a bone moving device main body structure, a rod needle clamp and a bone needle, wherein the bone moving device main body structure comprises a base rod and a sleeve, and the sleeve is set into two structural forms of adjusting section adjustment and top end adjustment; the adjusting section adjusting structure comprises an adjusting section in the middle and a first fixing section and a second fixing section at two ends, wherein the sleeve is sleeved on the adjusting section in a sliding mode, the adjusting section is provided with a guide groove extending axially, the sleeve is provided with a guide key in sliding fit with the guide groove, the outer surface of the adjusting section is provided with an external thread, two ends of the sleeve are respectively provided with a first nut and a second nut which are in threaded fit with the external thread through internal threads, and the sleeve is driven to move axially by screwing the first nut and the second nut; the top end adjusting structure comprises a base rod, a sleeve, a screw rod, a pin, a fixed screw sleeve, a limit screw sleeve and a fastening pin, wherein the base rod comprises a middle adjusting section and a first fixing section and a second fixing section which are arranged at two ends, the sleeve is slidably sleeved on the adjusting section, the adjusting section is provided with a guide groove which extends axially, the sleeve is provided with a guide key which is in sliding fit with the guide groove, the top end of the base rod is provided with the adjusting nut, the screw rod, the pin, the fixed screw sleeve, the limit screw sleeve and the adjusting screw rod are tightly connected through the pin, the fixed screw sleeve is sleeved on the screw rod and is in sliding connection with the screw rod, one end of the fixed screw sleeve is abutted against the adjusting nut, the other end of the fixed screw sleeve is abutted against the top end of the base rod and is in threaded connection with the; an outer sleeve is sleeved on the outer wall of the base rod adjusting section and is in sliding connection with the base rod, an inner sleeve is arranged on the inner wall of the base rod adjusting section and is in sliding connection with the base rod, threads are arranged on the inner wall of the inner sleeve and are in threaded connection with the threaded rod, and one end of the inner sleeve is fixedly connected with the outer sleeve through a guide key; the first fixing section and the second fixing section are provided with a rod needle clamp and a bone needle to fix two ends of a bone to be dragged, and the sleeve is provided with a rod needle clamp and a bone needle to drag a free bone segment towards a defect when the sleeve moves.
Further, at least one of the first and second fixing sections may be provided as a separate section movable relative to the adjusting section to achieve fine adjustment.
Furthermore, a pressure regulating device is arranged between the split section and the adjusting section, and an axial guide structure is also arranged between the adjusting section and the split section.
Furtherly, adjustment section and components of a whole that can function independently section overlap each other and establish in order to constitute guide structure is equipped with the axially extended slot hole that runs through in the adjustment section, and the sliding fit has the backing pin in the slot hole that runs through, and the both ends of backing pin stretch out from the both sides that run through the slot hole respectively, set up between backing pin and the components of a whole that can function independently section pressure regulating device, first fixed section one end have the external screw thread, and the external screw thread top spin of first fixed section is equipped with extrusion nut.
Further, the voltage regulation device is used for bidirectional voltage regulation.
Furthermore, the outside of adjustment section still is equipped with the stop collar.
Further, the split section is connected with the first fixed section through a connecting pin.
Furthermore, the guide key is a slide block, and the slide block is fixed on the inner wall of the sleeve through at least one pin.
Furthermore, the guide key is a pin shaft, and at least one of two ends of the pin shaft is inserted into the penetrating long hole of the adjusting section.
Further, at least one top end of the first nut and the second nut is provided with a pressing sleeve.
By adopting the technical scheme, the invention has the beneficial effects that: compared with the prior art, the single-rod type bone moving device can be used independently, only two ends of the single-rod type bone moving device are fixed relative to two ends of a broken bone through the rod needle clamp and the bone needle, and then the rod needle clamp and the bone needle drive the cut free bone segment to slowly move to the defect part of the bone, so that the aims of stimulating organism tissues and forming a new bone to prolong the bone can be fulfilled; in addition, after the micro-motion device and the pressure regulating device are additionally arranged on the single-rod type bone moving device, the stress of the fracture end can be regulated and controlled, the stress shielding of the fracture end is avoided, the fracture healing is accelerated, and the time of the external fixing support with the frame is shortened.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of a first embodiment of the single bar bone mover of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic view of the principle of the usage state;
FIG. 4 is a left side partial view of FIG. 3;
FIG. 5 is a partial schematic view of a second embodiment of a single bar bone mover;
FIG. 6 is a partial schematic view of a third embodiment of a single bar bone mover;
FIG. 7 is a partial schematic view of a fourth embodiment of a single bar bone mover;
FIG. 8 is a partial schematic view of a fifth embodiment of a single bar bone mover;
FIG. 9 is an enlarged partial view at B of FIG. 8;
FIG. 10 is a schematic diagram of a bi-directional voltage regulation;
FIG. 11 is a partial schematic view of a seventh embodiment of a single bar bone mover;
FIG. 12 is a partial schematic view of an eighth embodiment of a single bar bone mover;
FIG. 13 is a partial schematic view of a ninth embodiment of the single bar bone mover;
FIG. 14 is a partial schematic view of a tenth embodiment of a single bar bone mover;
FIG. 15 is a partial schematic view of an eleventh embodiment of a single bar bone mover;
in FIGS. 1-9: 01-bone to be dragged, 02-free bone segment, 03-defect part, 04-cut part, 10-bone moving device main structure, 111-adjusting segment, 1011-penetrating long hole, 1012-penetrating long hole, 121-split segment, 131-fixing segment, 102-sleeve, 1021-guide key, 103-first nut, 104-second nut, 105-compression nut, 106-pressure regulating spring, 107-stop pin, 108-extrusion nut, 109-limiting sleeve, 110-pin, 120-pin shaft (the reference number is not shown in the figure, the reference number is not shown in the embodiment), 20-rod pin clamp and 30-bone pin;
in FIGS. 10-12: 10-a threaded rod, 11-an adjusting nut, 12-a connecting pin, 13-a fixed screw sleeve, 14-a limiting screw sleeve, 15-a base rod, 16-a fastening pin, 17-an outer sleeve, 18-a connecting half pin, 19-an inner sleeve and 20-a long pin;
in FIGS. 13-14, 15-base rod, 22-slide rod, 23-fastening nut, 24-anti-rotation pin, 26-slot.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A first embodiment of the single bar bone mover of the present invention: as shown in fig. 1-4, the single rod type bone moving device includes a bone moving device main structure 10, a rod pin clamp 20 and a bone pin 30, the bone moving device main structure includes a base rod and a sleeve 102, the base rod includes a middle adjusting section 111 and first and second fixing sections at two ends, in this embodiment, the upper portion is a first fixing section 131 integrated with the adjusting section 111, the lower second fixing section is a split section 121, the sleeve 102 is slidably sleeved on the adjusting section 111, the adjusting section 111 is provided with an axially extending guide groove, in this embodiment, the guide groove is a penetrating long hole 1011 radially penetrating the adjusting section 111, the sleeve 102 is provided with a guide key 1021 slidably fitting with the penetrating long hole 1011, in this embodiment, the guide key 1021 is a cylindrical pin shaft, two ends of the pin shaft are slidably fitted with groove walls respectively penetrating two sides of the long hole 1011, in other embodiments, only one guide key 1021 in fig. 2 may be replaced by one, the outer surface of the adjusting section 111 is provided with an external thread, two ends of the sleeve 102 are respectively provided with a first nut 103 and a second nut 104 which are in threaded fit with the external thread through the internal thread, the sleeve 102 is driven to move along the axial direction by screwing the first nut and the second nut, as shown in fig. 3-4, the rod needle clamp 20 and the bone needle 30 are installed on the first fixing section and the second fixing section to fix two ends 01 of a bone to be dragged, and the rod needle clamp 20 and the bone needle 30 are installed on the sleeve 102 to drag a free bone segment 02 towards a defect 03 when the sleeve 102 moves.
In this embodiment, at least one of the first and second fixing sections is a split section 121 that can move relative to the adjusting section 111 to achieve fine adjustment, and at this time, the device is of a fine-adjustment type, after the pressing nut 108 is tightened, the split section 121 is locked, and after the pressing nut 108 is loosened, the split section 121 can be adjusted in a small range along the axial direction, wherein the stop pin 107 is an anti-rotation pin, so as to achieve connection between the split section 121 and the base rod. The arrangement of the segment sections enables fine adjustment to be achieved through the split of the segment sections and the adjusting sections on the basis of large-range adjustment of the middle adjusting section, the fine adjustment direction can be adjusted along the moving direction of the free fractured bone or can be adjusted in the moving direction of the reverse free fractured bone, and the adjustment is flexible and variable. In other embodiments, the first and second fixed segments can be replaced by separate segments, so as to realize the micro-adjustment on both sides of the adjustment segment. The split section is connected with the adjusting section through internal and external threads. The guide key is a pin shaft, and two ends of the pin shaft are inserted into the penetrating long holes of the adjusting sections. One top end of the first nut and the second nut is provided with a compression nut 105.
The rod needle clamp 20 and the bone needle 30 are both in the prior art, the rod needle clamp is a special bone needle clamp, can be fixed on a cylindrical rod piece and is provided with clamping surfaces for clamping the bone needle, the angle of the bone needle can be freely adjusted between the clamping surfaces, and the bone needle can be locked after the adjustment is completed.
When in use: as shown in figure 3, the two ends of the broken bone are fixed through the bar needle clamp and the bone needle, then the bar needle clamp and the bone needle drive the cut free bone segment to slowly move to the defect of the bone, so that the aims of stimulating organism tissues and forming new bone to prolong the bone can be fulfilled, and the bone needle only needs to be pulled out during disassembly. During the adjustment, through first, second nut drive sleeve pipe remove on the adjustment section, remove convenient and fast on the one hand, on the other hand, the fixed mode of both sides nut has the danger that slippage or pine take off after being difficult for being touched, and stability is good, has ensured safety, stability and the accuracy after the regulation, need not the intramedullary needle of wearing moreover. Therefore, the device has the characteristics of convenient and quick operation and small wound, and after the device is dismantled, bones and soft tissues can be quickly healed; in addition, the device only comprises components such as a screw rod, a nut, a rod needle clamp, a spicule and the like which are convenient to process, is low in cost, is suitable for large-scale popularization, and is particularly suitable for families of patients with poor family economic conditions to use.
A second embodiment of the single bar bone mover of the present invention: as shown in fig. 5, the difference from the first embodiment is that the guiding key 1021 is a half pin shaft, one end of which is fixed on the sleeve 102, and the other end of which extends into the side penetrating the long hole 1011, so as to realize guiding, a round hole is arranged on the sleeve, the diameter of the round hole is consistent with the outer diameter of the guiding key, the guiding key 1021 is tightly matched with the round hole, and the long hole 1011 can be replaced by a long groove.
A third embodiment of the single bar bone mover of the present invention: as shown in fig. 6, the difference from the first embodiment is that the guiding key 1021 is two coaxial half pins, one end of each half pin is fixed on the sleeve, and the other end of each half pin extends into the sleeve from both sides of the through hole 1011, thereby achieving axial guiding.
A fourth embodiment of the single bar bone mover of the present invention: as shown in fig. 7, the present embodiment is a fixed nut adjusting type, and is different from the first embodiment in that the guide key 1021 is a slider, the slider is fixed on the inner wall of the sleeve 102 by two pins 110, and the slider is guided by guiding and sliding fit with the side wall on one side of the through long hole 1011, and at this time, the through long hole 1011 can be replaced with a long groove.
A fifth embodiment of the single bar bone mover of the present invention: as shown in fig. 8-9, the difference from the first embodiment is that a one-way pressure-regulating device is disposed between the split section 121 and the adjustment section 111, the one-way pressure-regulating device may be a pressure-regulating spring 106, the pressure-regulating spring 106 is used to provide an upward acting force to the split section 121, and an axially-guiding structure is further disposed between the adjustment section 111 and the split section 121. The setting of pressure regulating spring makes to be the elastic force between adjustment section and the components of a whole that can function independently section, and this elastic force passes through sleeve pipe, excellent needle clamp and spicule and acts on the fracture end, gives the elastic effort of fracture end. Compared with the rigidity adjustment of the traditional inelastic adjustment, the fracture healing is promoted. The adjusting section and the split section are sleeved with each other to form a guide structure, a through long hole 1012 extending in the axial direction is formed in the adjusting section 111, a stop pin 107 is assembled in the through long hole 1012 in a sliding mode, two ends of the stop pin 107 extend out from two sides of the through long hole respectively, a pressure regulating spring 106 is arranged between the stop pin 107 and the split section 121, and an extrusion nut 108 used for pushing the stop pin towards the adjusting spring is arranged on the external thread of the adjusting section in a rotating mode. The outside of the adjusting section 111 is also sleeved with a limit sleeve 109, and the inner diameter of the limit sleeve 109 is larger than the length of the stop pin 107.
A sixth embodiment of the single bar bone mover of the present invention: as shown in fig. 10, the difference from the fifth embodiment is that a bidirectional pressure regulating device is disposed between the split section 121 and the adjustment section 111, the bidirectional pressure regulating device may be a pressure regulating spring 106, the pressure regulating spring 106 is used to provide an upward acting force to the split section 121, and an axially guiding structure is further disposed between the adjustment section 111 and the split section 121. An upper extrusion nut 108 and a lower extrusion nut 108 are screwed on the external thread of the adjusting section. The outer part is also sleeved with a limit sleeve 109, and the inner diameter of the limit sleeve 109 is larger than the length of the stop pin 107.
A seventh embodiment of the single bar bone mover of the present invention: as shown in fig. 11, in this embodiment, the top end adjusting structure, the base rod 15 includes a middle adjusting section and first and second fixing sections at both ends, the sleeve is sleeved on the adjusting section in a sliding manner, the adjusting section is provided with a guide groove extending axially, the sleeve is provided with a guide key matched with the guide groove in a sliding manner, the top end of the base rod 15 is provided with an adjusting nut 11, a threaded rod 10, a pin, a fixed threaded sleeve 13, a limiting threaded sleeve 14 and a fastening pin 16, the adjusting nut 11 is sleeved on the adjusting screw, the screw rod 10 is tightly connected through a pin, the fixed screw sleeve 13 is sleeved on the screw rod 10 and is in sliding connection with the screw rod 10, one end of the fixed screw sleeve 13 is abutted against the adjusting nut 11, the other end is abutted against the top end of the base rod 15, the limiting screw sleeve 14 is in threaded connection with the inner wall of the base rod 15, is sleeved on the threaded rod 10 and is in fastening connection with the threaded rod 10 through a fastening pin 16, and one end of the limiting screw sleeve 14 abuts against the top end of the fixed screw sleeve 13; outer tube 17 is established to base rod 15 adjustment section outer wall cover, with base rod 15 sliding connection, and interior sleeve 19 is established to the inner wall, with base rod 15 sliding connection, and interior sleeve 19 inner wall is established the screw thread, with threaded rod 10 threaded connection, and interior sleeve 19 one end is passed through the guide key and is connected with outer tube 17 fastening.
When in use: through upper portion rotation adjusting nut 11 to drive threaded rod 10 rotatory through connecting pin 12, spacing swivel nut 14 is along with rotatory, and fixed swivel nut 13 is motionless with base rod 15, and the rotation of threaded rod 10 drives the interior sleeve pipe 19 of threaded connection with it and reciprocates, and then drives outer tube 17 and reciprocates, is fixed in excellent needle holder and the bone needle on outer tube 17 and removes along with it, drives the bone and removes, realizes that the bone moves.
An eighth embodiment of the single bar bone mover of the present invention: as shown in fig. 12, the difference from the seventh embodiment is that the connecting half pin is replaced with a long pin 20 having both ends penetrating through the inner sleeve 19, the base rod 15 and the outer sleeve 17.
A ninth embodiment of the single bar bone mover of the present invention: as shown in fig. 13, the difference from the seventh embodiment is that the connection of the inner sleeve, the base rod and the outer sleeve is realized by two symmetrical and coaxially arranged connecting half-pins.
A tenth embodiment of the single bar bone mover of the present invention: as shown in fig. 14, the difference from the seventh embodiment is that it is a inching type nut adjustment type, by adding a sliding rod 22 at one end of the base rod, the sliding rod 22 has an external thread at one end and is connected with a fastening nut 23 through the external thread, the sliding rod 22 also has a long hole 26 penetrating in the radial direction at the lower end, an anti-rotation pin 24 is installed in the long hole 26 to realize the connection with the base rod, when in use, the fastening nut 23 is loosened, the sliding rod 22 can be moved axially, and due to the anti-rotation pin 24, the sliding rod 22 will not rotate relative to the base rod, and after the fastening nut 23 is tightened, the sliding rod 22 can not be moved.
Eleventh embodiment of the single bar bone mover of the present invention: as shown in fig. 15, the difference from the fifth embodiment is that the lower nut adjustment is modified to the tip adjustment in the above-described embodiment.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The single-rod type bone moving device is characterized by comprising a bone moving device main body structure, a rod needle clamp and a bone needle, wherein the bone moving device main body structure comprises a base rod and a sleeve, and the sleeve is set into two structural forms of adjusting section adjustment and top end adjustment; the adjusting section adjusting structure comprises an adjusting section in the middle and a first fixing section and a second fixing section at two ends, wherein the sleeve is sleeved on the adjusting section in a sliding mode, the adjusting section is provided with a guide groove extending axially, the sleeve is provided with a guide key in sliding fit with the guide groove, the outer surface of the adjusting section is provided with an external thread, two ends of the sleeve are respectively provided with a first nut and a second nut which are in threaded fit with the external thread through internal threads, and the sleeve is driven to move axially by screwing the first nut and the second nut; the top end adjusting structure comprises a base rod, a sleeve, a screw rod, a pin, a fixed screw sleeve, a limit screw sleeve and a fastening pin, wherein the base rod comprises a middle adjusting section and a first fixing section and a second fixing section which are arranged at two ends, the sleeve is slidably sleeved on the adjusting section, the adjusting section is provided with a guide groove which extends axially, the sleeve is provided with a guide key which is in sliding fit with the guide groove, the top end of the base rod is provided with the adjusting nut, the screw rod, the pin, the fixed screw sleeve, the limit screw sleeve and the adjusting screw rod are tightly connected through the pin, the fixed screw sleeve is sleeved on the screw rod and is in sliding connection with the screw rod, one end of the fixed screw sleeve is abutted against the adjusting nut, the other end of the fixed screw sleeve is abutted against the top end of the base rod and is in threaded connection with the; an outer sleeve is sleeved on the outer wall of the base rod adjusting section and is in sliding connection with the base rod, an inner sleeve is arranged on the inner wall of the base rod adjusting section and is in sliding connection with the base rod, threads are arranged on the inner wall of the inner sleeve and are in threaded connection with the threaded rod, and one end of the inner sleeve is fixedly connected with the outer sleeve through a guide key; the first fixing section and the second fixing section are provided with a rod needle clamp and a bone needle to fix two ends of a bone to be dragged, and the sleeve is provided with a rod needle clamp and a bone needle to drag a free bone segment towards a defect when the sleeve moves.
2. The single bar bone mover of claim 1, wherein at least one of the first and second fixed segments is provided as a separate segment that is movable relative to the adjustment segment to effect fine adjustment.
3. The single rod bone mover of claim 2, wherein a pressure regulator is provided between the segmented section and the adjustment section, and an axially guided guide structure is provided between the adjustment section and the segmented section.
4. The single rod bone moving device according to claim 3, wherein the adjustment section and the split section are sleeved with each other to form the guide structure, the adjustment section is provided with a through slot hole extending in an axial direction, a stop pin is slidably assembled in the through slot hole, both ends of the stop pin respectively extend out from both sides of the through slot hole, the pressure adjusting device is arranged between the stop pin and the split section, one end of the first fixing section is provided with an external thread, and an extrusion nut is screwed on the external thread of the first fixing section.
5. The single bar bone mover of claim 4, wherein the pressure regulating device is a bi-directional pressure regulating.
6. The single bar bone mover of claim 5, wherein a stop collar is further sleeved on the outside of the adjustment section.
7. The single bar bone mover of claim 2, wherein the segmented section and the first stationary section are connected by a connecting pin.
8. The single bar bone mover of claim 7, wherein the guide key is a slider, the slider being secured to the inner wall of the cannula by at least one pin.
9. The single bar bone mover of claim 8, wherein the guide key is a pin, at least one of the ends of the pin being inserted into a through slot of the adjustment section.
10. The single bar bone mover of any of claims 1-9, wherein at least one of the first and second nuts has a compression sleeve at a top end thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911385020.4A CN111134812A (en) | 2019-12-28 | 2019-12-28 | Single-rod type bone moving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911385020.4A CN111134812A (en) | 2019-12-28 | 2019-12-28 | Single-rod type bone moving device |
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| Publication Number | Publication Date |
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| CN111134812A true CN111134812A (en) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911385020.4A Pending CN111134812A (en) | 2019-12-28 | 2019-12-28 | Single-rod type bone moving device |
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| CN (1) | CN111134812A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115349933A (en) * | 2022-08-23 | 2022-11-18 | 杭州华迈医疗科技有限公司 | Distraction osteogenesis device |
| CN115998398A (en) * | 2023-02-14 | 2023-04-25 | 北京爱康宜诚医疗器材有限公司 | Bone fixing device |
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| CN115349933A (en) * | 2022-08-23 | 2022-11-18 | 杭州华迈医疗科技有限公司 | Distraction osteogenesis device |
| CN115998398A (en) * | 2023-02-14 | 2023-04-25 | 北京爱康宜诚医疗器材有限公司 | Bone fixing device |
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