CN103610489B - Intramedullary repositor for fracture of long bones of arms and legs - Google Patents
Intramedullary repositor for fracture of long bones of arms and legs Download PDFInfo
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- CN103610489B CN103610489B CN201310605218.5A CN201310605218A CN103610489B CN 103610489 B CN103610489 B CN 103610489B CN 201310605218 A CN201310605218 A CN 201310605218A CN 103610489 B CN103610489 B CN 103610489B
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- outer sleeve
- reposition
- release link
- fracture
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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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary pins, nails or other devices
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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
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
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- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
The invention provides an intramedullary repositor for fracture of long bones of arms and legs, and belongs to the technical field of medical equipment in an orthopedics department. The intramedullary repositor is used for quick reposition on fracture of long bones which move sideward. According to the technical scheme, a reposition rod of the intramedullary repositor is positioned in a cavity of an outer sleeve; one side of the rear of a reposition head is connected with the inner wall of the outer sleeve through a fixing shaft; the other end of the rear of the reposition head is connected with the front end of the reposition rod through a rotating shaft; the front of the reposition head extends out of the front end of the outer sleeve; the rear end of the reposition rod is connected with a pull-and-push handle; and a wire guiding hole is formed in a wall on the lower portion of the outer sleeve and is a through hole formed along the axis of the outer sleeve. The outer sleeve is planted in a medullary cavity in one end of a long fractured bone; the reposition head enters a medullary cavity opposite to a fractured end; and the pull-and-push handle at the rear end of the reposition rod is pulled, so that the reposition head shifts the opposite medullary cavity, and reposition on the opposite fractured bone is realized. The intramedullary repositor is simple in structure and convenient to use; quick reposition on the long fractured bones which move sideward or rotate can be realized; and the reposition accuracy and the surgery quality are improved.
Description
Technical field
The present invention relates to a kind of device that acropathy long bone fractures is resetted, belong to orthopedic medical device technical field.
Background technology
In orthopaedics therapy, acropathy long bone fractures is clinical common damage, mainly contains in fixing in open reduction and closed reduction and fix two kinds in the operation plan for the treatment of acropathy long bone fractures.
The advantage of open reduction internal fixation treatment operation plan is to carry out the reduction of the fracture under direct-view, and the quality of the reduction of the fracture is high, then adopts blade plate or intramedullary pin to fix; Its shortcoming is to need open surgery, and operation wound is large, and patient's blood loss is many, and fracture around contains in the hematoma art that promotes the union of fracture factor and is eliminated, and is unfavorable for union of fracture; In addition,, owing to cutting the tissues such as skin, subcutaneous tissue diastatic fracture muscle around, the complication rates such as infection are high.
The advantage of closed reduction internal fixation operation scheme is that the hematoma that wound is little, patient's blood loss is few, fracture contains the factor that promotes union of fracture around can be retained, and the complication rates such as postoperative infection, nonunion are relatively low; Its shortcoming is that reduction of the fracture difficulty is large because reset and the technique for fixing of closed reduction to doctor requires height, especially pulverize or the serious reduction of the fracture of lateral displacement more difficult, operating time is long, X-ray examination dosage is large.
At present, along with the development of medical skill, the ratio rapid growth of Minimally Invasive Surgery in various operations, for raising operation quality, quickening recovery process, minimizing patient suffering provide new means.Therefore, in bone surgery, adopting the method treatment acropathy long bone fractures of closed reduction is the direction of Future Development, but at present in the operation process of closed reduction, for the reduction of the fracture difficulty that has lateral displacement, there is no special utensil, affect the accuracy and the operation quality that reset, become the difficult problem in acropathy long bone fractures treatment, do not solve so far.
Summary of the invention
Technical problem to be solved by this invention is to provide positor in a kind of acropathy long bone fractures marrow, and this positor can be to existing the long bone fracture of lateral displacement to carry out the reset of quick Wicresoft, improves the accuracy and the operation quality that reset.
The technical scheme solving the problems of the technologies described above is:
Positor in a kind of acropathy long bone fractures marrow, it comprises outer sleeve, release link, reset head, seal wire, outer sleeve Nei You hollow chamber, the front opening of outer sleeve, release link is positioned at the chamber of outer sleeve, the chamber inner wall of release link and outer sleeve is for being slidably matched, one side at reset head rear portion is connected with outer sleeve inwall by fixed axis, the opposite side at reset head rear portion is connected with the front end of release link by turning cylinder, the front end of outer sleeve is stretched out in the front portion of reset head, the rear end of outer sleeve is stretched out at the rear portion of release link, the rear end of release link is connected with push and pull bar, on the bottom barrel of outer sleeve, there is thread eye, thread eye is along outer sleeve axis, thread eye is the through hole that runs through outer sleeve rear and front end, diameter and the seal wire of thread eye match.
Positor in above-mentioned acropathy long bone fractures marrow, the top of described outer sleeve outer wall is fluted, and groove is along outer sleeve axis, and groove connects the rear and front end of outer sleeve outer wall, covers one deck dura mater on groove, and the groove width of groove and the diameter of seal wire match.
Positor in above-mentioned acropathy long bone fractures marrow, has spring in described outer sleeve, and spring housing is in release link, and one end of spring is connected with release link, and the other end of spring is stuck on outer sleeve inwall.
Positor in above-mentioned acropathy long bone fractures marrow, described reset head is shaped as inclined-plane shape or round blunt, and reset head top is fluted to be connected with the groove at outer sleeve outer wall top.
Positor in above-mentioned acropathy long bone fractures marrow, the external diameter of described outer sleeve is 5-20mm, and the length of outer sleeve is 150-700mm, and the length of reset head is 5-50mm.
The invention has the beneficial effects as follows:
Outer sleeve of the present invention can be implanted in one end pulp cavity of fracture long bone, by the release link in push-and-pull outer sleeve, reset head is entered in the pulp cavity of fracture site offside by fracture, pull the push and pull bar of release link rear end, make pulp cavity that reset head stirs offside by the offside reduction that fractures.The present invention not only can complete the reduction of the fracture of lateral displacement, and resets for the fracture that has lateral displacement and rotation simultaneously, corrects lateral displacement and rotation displacement simultaneously.The present invention is simple in structure, easy to use, can be to existing the long bone fracture of lateral displacement and swing offset to carry out the reset of quick Wicresoft, improve the accuracy and the operation quality that reset, having solved long-term open question, is the highly effective utensil of the method treatment acropathy long bone fractures of closed reduction.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is using state figure of the present invention;
Fig. 4 is the continuous using state figure of Fig. 3.
In figure, labelling is as follows: long bone 1, pulp cavity 2, outer sleeve 3, release link 4, reset head 5, fixed axis 6, turning cylinder 7, push and pull bar 8, thread eye 9, groove 10, dura mater 11, spring 12, seal wire 13.
Detailed description of the invention
The present invention includes outer sleeve 3, release link 4, reset head 5, seal wire 13.
In figure, show, outer sleeve 3 Nei You hollow chamber, release link 4 is positioned at the chamber of outer sleeve 3, and release link 4 can be slided front and back in the chamber of outer sleeve 3.The front opening of outer sleeve 3, reset head 5 is arranged on the front end of release link 4, and the front portion of reset head 5 can be stretched out outside the front opening of outer sleeve 3.
In figure, show, one side at reset head 5 rear portions is fixed on outer sleeve 3 inwalls by fixed axis 6, the opposite side at reset head 5 rear portions is connected with the front end of release link 4 by turning cylinder 7, and the rear end of outer sleeve 3 is stretched out at the rear portion of release link 4, and the rear end of release link 4 is connected with push and pull bar 8.Promote forward or pull back push and pull bar 8, release link 4 moves forward and backward.The front portion of release link 4 promotes by turning cylinder 7 or pulls rear portion one side of reset head 5 to move forward and backward, because the rear portion opposite side of reset head 5 is fixed on by fixed axis 6 on the inwall of outer sleeve 3, reset head 5 release link 4 pull or promote under rotate, the front portion of reset head 5 moves up and down.
In figure, show there is thread eye 9 on the barrel of the bottom of outer sleeve 3, thread eye 9 is along outer sleeve 3 axis, and thread eye 9 is for running through the through hole of outer sleeve 3 rear and front ends, and seal wire 13 is through in thread eye.The effect of seal wire 13 is after the reset head 5 in outer sleeve 3 resets the Contralateral fracture broken ends of fractured bone of fracture, from the interior insertion seal wire 13 of thread eye 9 in the pulp cavity of the fracture site of offside, then in knochenbruch pulp cavity, withdraw from outer sleeve 3, utilize intramedullary pin kit to reset to fracture site fixing.
In figure, show, fluted 10 at the top of outer sleeve 3 outer walls, groove 10 is along outer sleeve 3 axis, and groove 10 connects the rear and front end of outer sleeve 3 outer walls, covers one deck dura mater 11 on groove 10, in the groove 10 under dura mater 11, is installed with seal wire 13.The effect of dura mater 11 is to prevent that the seal wire 13 in groove 10 from contacting with the tissue such as muscle, blood vessel in operation process.Dura mater 11 is bonded in to groove 10 both sides of outer sleeve 3 with adopting dura mater 11 and being connected of outer sleeve 3 high strength glue, also can adopts dura mater cover to be enclosed within on outer sleeve 3, the diameter of dura mater cover and the external diameter of outer sleeve 3 match.The effect of groove 10 and dura mater 11 is identical with the effect of the seal wire 13 of outer sleeve 3 bottoms.After reset head 5 in outer sleeve 3 resets the Contralateral fracture broken ends of fractured bone of fracture, from groove 10, insert seal wire 13 in the pulp cavity of the fracture site of offside, then in knochenbruch pulp cavity, withdraw from outer sleeve 3, utilize intramedullary pin kit to reset to fracture site fixing.
In figure, show, reset head 5 is shaped as inclined-plane shape or round blunt, reset head 5 tops are fluted to be connected with the groove 10 at outer sleeve 3 outer wall tops, and seal wire 13 can enter in the pulp cavity of fracture site of offside along the groove in the groove 10 at outer sleeve 3 outer wall tops and reset head 5.
In figure, show, outer sleeve 3 is interior can also load onto spring 12, and spring 12 is enclosed within release link 4, and one end of spring 12 is connected with release link 4, and the other end of spring 12 is stuck on outer sleeve 3 inwalls.In the situation that not pulling release link 4, release link 4 holds out against to far-end like this, and the reset head 5 of release link 4 front ends is position upwards, and reset head 5 upwards becomes 60-90 degree angle with the major axis of outer sleeve 3.
In figure, show, the external diameter of outer sleeve 3 is 5-20mm, and the length of outer sleeve 3 is 150-700mm, and the length of reset head 5 is 5-50mm.
Use procedure of the present invention is as follows:
From long bone fracture one end, pulp cavity is implanted into positor, the front end of the reset head 5 of its end is entered by fracture in the pulp cavity of fracture site offside, pull push and pull bar 8, release link 4 moves backward, the front portion of release link 4 pulls reset head 5 to rotate by turning cylinder 7, the front portion of reset head 5 moves down, and makes reset head 5 in the process of stretching, progress into offside pulp cavity, utilizes the sled of reset head 5 to dial strength and positor main body completes reset by the strength of offside pulp cavity.
For the fracture that has lateral displacement and rotation simultaneously, can be on the basis of said process, fixed reset head 5 is a suitable angle, and then spinning reduction device entirety completes reset, corrects lateral displacement and rotation displacement simultaneously.
After reset head 5 in outer sleeve 3 resets the Contralateral fracture broken ends of fractured bone of fracture, in thread eye 9 or groove 10, insert seal wire 13 in the pulp cavity of the fracture site of offside, then in knochenbruch pulp cavity, withdraw from outer sleeve 3, utilize intramedullary pin kit to reset to fracture site fixing.
Claims (5)
1. positor in an acropathy long bone fractures marrow, it is characterized in that: it comprises outer sleeve (3), release link (4), reset head (5), seal wire (13), outer sleeve (3) Nei You hollow chamber, the front opening of outer sleeve (3), release link (4) is positioned at the chamber of outer sleeve (3), the chamber inner wall of release link (4) and outer sleeve (3) is for being slidably matched, one side at reset head (5) rear portion is connected with outer sleeve (3) inwall by fixed axis (6), the opposite side at reset head (5) rear portion is connected with the front end of release link (4) by turning cylinder (7), the front end of outer sleeve (3) is stretched out in the front portion of reset head (5), the rear end of outer sleeve (3) is stretched out at the rear portion of release link (4), the rear end of release link (4) is connected with push and pull bar (8), on the bottom barrel of outer sleeve (3), there is thread eye (9), thread eye (9) is along outer sleeve (3) axis, thread eye (9) is for running through the through hole of outer sleeve (3) rear and front end, the diameter of thread eye (9) and seal wire (13) match.
2. positor in acropathy long bone fractures marrow according to claim 1, it is characterized in that: the top fluted (10) of described outer sleeve (3) outer wall, groove (10) is along outer sleeve (3) axis, groove (10) connects the rear and front end of outer sleeve (3) outer wall, the upper one deck dura mater (11) that covers of groove (10), the diameter of the groove width of groove (10) and seal wire (13) matches.
3. positor in acropathy long bone fractures marrow according to claim 2, it is characterized in that: in described outer sleeve (3), have spring (12), spring (12) is enclosed within release link (4), one end of spring (12) is connected with release link (4), and the other end of spring (12) is stuck on outer sleeve (3) inwall.
4. positor in acropathy long bone fractures marrow according to claim 3, is characterized in that: described reset head (5) is shaped as inclined-plane shape or round blunt, and reset head (5) top is fluted to be connected with the groove (10) at outer sleeve (3) outer wall top.
5. positor in acropathy long bone fractures marrow according to claim 4, is characterized in that: the external diameter of described outer sleeve (3) is 5-20mm, and the length of outer sleeve (3) is 150-700mm, and the length of reset head (5) is 5-50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310605218.5A CN103610489B (en) | 2013-11-26 | 2013-11-26 | Intramedullary repositor for fracture of long bones of arms and legs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310605218.5A CN103610489B (en) | 2013-11-26 | 2013-11-26 | Intramedullary repositor for fracture of long bones of arms and legs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103610489A CN103610489A (en) | 2014-03-05 |
| CN103610489B true CN103610489B (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310605218.5A Active CN103610489B (en) | 2013-11-26 | 2013-11-26 | Intramedullary repositor for fracture of long bones of arms and legs |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103815957B (en) | 2014-03-20 | 2014-09-10 | 张英泽 | Long bone fracture intramedullary repositor capable of automatically feeding wire |
| CN105748138B (en) * | 2014-12-26 | 2019-09-27 | 林仲可 | Articulatio atlantoepistrophica anterior dislocation reduction fixture device |
| CN113069197B (en) * | 2021-04-12 | 2024-04-19 | 宋鹏 | Bone block lifting and fixing device and installation method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2734162Y (en) * | 2004-09-08 | 2005-10-19 | 吴玉杰 | Distal end self-locking, proximal end cross-locking type intramedullary nail and matching localizer |
| US8328806B2 (en) * | 2008-06-24 | 2012-12-11 | Extremity Medical, Llc | Fixation system, an intramedullary fixation assembly and method of use |
| CH699896A2 (en) * | 2008-11-14 | 2010-05-14 | Axus Medical Suisse Gmbh | Intramedullary DEVICE FOR Arthrodesis or OSTEOSYNTHESIS. |
| WO2010135156A1 (en) * | 2009-05-21 | 2010-11-25 | Novalign Orthopaedics, Inc. | Snap and twist segmented intramedullary system, apparatus and associated methods |
| WO2011067668A1 (en) * | 2009-12-01 | 2011-06-09 | Dalhousie University | Steerable femoral fracture reduction device |
| CN203138667U (en) * | 2012-11-20 | 2013-08-21 | 上海市浦东新区公利医院 | Repositor for implanting femoral nails |
| CN203576614U (en) * | 2013-11-26 | 2014-05-07 | 张英泽 | Intramedullary repositor for fracture of long bones of limbs |
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| CN103610489A (en) | 2014-03-05 |
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