CN102783998B - Hinge type dragging external fixing device - Google Patents
Hinge type dragging external fixing device Download PDFInfo
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- CN102783998B CN102783998B CN201210155129.0A CN201210155129A CN102783998B CN 102783998 B CN102783998 B CN 102783998B CN 201210155129 A CN201210155129 A CN 201210155129A CN 102783998 B CN102783998 B CN 102783998B
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- pin
- center
- hinge type
- chute
- screw rod
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Abstract
The invention discloses a hinge type dragging external fixing device which comprises two parallel screws, a rotating central pin, a maintaining reset pin, a fixing dragging pin and nuts. Sliding grooves are arranged along the axial direction of the screws, and installing through holes are arranged at the bottoms of the screws. Two ends of the rotating central pin are inserted in the installing through holes of the screws respectively, and the rotating central pin penetrates through the center of a lateral side of a near finger joint bone. Two ends of the maintaining reset pin are inserted in the sliding grooves respectively, and the maintaining reset pin transversely penetrates through the center of a lateral side of a near end of a middle finger joint bone. Two ends of the fixing dragging pin are inserted in the sliding grooves of the two screws respectively, and the fixing dragging pin transversely penetrates through the center of the lateral side of a far end of the middle finger joint bone. The nuts are matched with threads of the screws and used for limiting positions of the fixing dragging pin and the maintaining reset pin respectively. The hinge type dragging external fixing device can maintain centrality reset of joints and prevent the joints from dislocating again. By means of the device, functional training can be conducted early, and active stretching movement of the joints can be conducted on the same day after operation so as to be favorable for fast healing of joint articular cartilages and fast recovery of joint functions. The device is light in appearance, easy to operate and easy in clinical popularization.
Description
Technical field
The present invention relates to technical field of medical instruments, more particularly, relate to a kind of hinge type traction external fixer.
Background technology
At present, fracture or fracture companion dislocation in finger proximal phalangeal joints, treatment difficulty, traditional internal fixation device, as Kirschner wire and plate screw, cannot accomplish anatomical reduction and Titanic micro-plates for overground fracture, postoperative cannot early ambulant, unsatisfactory curative effect.Fractures with micro-external-fixator keeps normal joint space while can maintaining embolia, but can not early functional exercise, and effect is not good yet.
Therefore, how can maintenance joint and the reduction of the fracture stable while, carry out joint active movement, become the technical problem that those skilled in the art are urgently to be resolved hurrily.
Summary of the invention
In view of this, the invention provides a kind of hinge type traction external fixer, with can maintenance joint and the reduction of the fracture stable while, carry out joint active movement.
For achieving the above object, the invention provides following technical scheme:
A kind of hinge type traction external fixer, comprising:
Screw rod, is two, and is arranged in parallel, and described screw rod axial arrangedly has chute along it, and the bottom of described screw rod offers installation through hole;
Two ends are inserted in the installation through hole of two described screw rods respectively, for crossing the center of rotation pin at center, proximal phalanx head side;
Two ends are inserted in the chute of two described screw rods respectively, for crossing the maintenance reset pin at center, middle phalanx near-end side;
Two ends are inserted in the chute of two described screw rods respectively, for crossing the fixed traction pin at center, middle phalanx far-end side;
Coordinate with described screw flight, be respectively used to the nut limiting described fixed traction pin and described maintenance reset pin position.
Preferably, in above-mentioned hinge type traction external fixer, also comprise reinforcement stabilization needle, the two ends of described reinforcement stabilization needle are inserted in the chute of two described screw rods respectively, and are positioned at the top of described chute, and described reinforcement stabilization needle is fixed by nut.
Preferably, in above-mentioned hinge type traction external fixer, described center of rotation pin, maintenance reset pin, described reinforcement stabilization needle and described fixed traction pin are arranged in parallel.
Preferably, in above-mentioned hinge type traction external fixer, described center of rotation pin, maintenance reset pin, described reinforcement stabilization needle and described fixed traction pin are Kirschner wire.
Preferably, in above-mentioned hinge type traction external fixer, the length of described screw rod is 80mm, and pitch is 1mm, and engineering diameter is 4mm, and the depth of thread is 0.4mm.
Preferably, in above-mentioned hinge type traction external fixer, the long end of described chute is 75mm, and width is 1.2mm, and described installation through-hole diameter is 1.2mm, and described chute is positioned at same plane with installation through hole.
Preferably, in above-mentioned hinge type traction external fixer, described center of rotation pin, maintenance reset pin, described reinforcement stabilization needle and described fixed traction pin are the Kirschner wire of diameter 1.2mm.
As can be seen from above-mentioned technical scheme, hinge type traction external fixer provided by the invention, can provide lasting pull strength to proximal phalangeal joints, thus keep natural joint gap.This both can recover the normal tension of joint capsule and side para-ligament, effectively prevented the contracture of joint capsule and side para-ligament, can alleviate joint load again, eliminated the joint other end to the stress of fracture end, was conducive to the functional rehabilitation of quickly-healing and the hands of fracturing.The centration that the present invention can maintain joint resets, and can prevent joint Redislocation.And functional exercise early, can carry out the active flexion-extension motion in joint after surgery the same day, this is conducive to the quickly-healing of articular cartilage and function of joint is recovered as early as possible.Profile of the present invention is light and handy, simple to operate, is easy to clinical expansion.
Accompanying drawing explanation
The structural representation of the hinge type traction external fixer that Fig. 1 provides for the embodiment of the present invention;
The sectional view of the screw rod that Fig. 2 provides for the embodiment of the present invention.
Detailed description of the invention
The invention discloses a kind of hinge type traction external fixer, with can maintenance joint and the reduction of the fracture stable while, carry out joint active movement.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1 and Fig. 2, the structural representation of the hinge type traction external fixer that Fig. 1 provides for the embodiment of the present invention, the sectional view of the screw rod that Fig. 2 provides for the embodiment of the present invention.
Disclosed in the embodiment of the present invention hinge type traction external fixer be mainly used in finger proximal phalangeal joints in fracture or fracture companion dislocation, can maintenance joint and the reduction of the fracture stable while, carry out joint active movement.This hinge type traction external fixer comprises screw rod 1, center of rotation pin 5, maintenance reset pin 4, fixed traction pin 3 and strengthens stabilization needle 2.
Wherein, screw rod 1 is two, and is arranged in parallel, and described screw rod 1 axial arrangedly has chute 11 along it, and the bottom of described screw rod 1 offers installs through hole 12.
The two ends of center of rotation pin 5 are inserted in the installation through hole 12 of two screw rods 1 respectively, be parallel to proximal phalangeal joints in center, proximal phalanx head side and side para-ligament starting point (the bone projection small in ends of anteroposterior position X-ray display proximal phalanx neck) to penetrate, center of rotation pin 5 through in the installation through hole 12 of screw rod 1, and and forms hinge arrangement between the screw rod of both sides.Effect is 1, countertraction, 2, proximal phalangeal joints stretches when bending movable as center.
The two ends maintaining reset pin 4 are inserted in the chute 11 of two screw rods 1 respectively, cross center, middle phalanx near-end side, and the pressurization maintaining joint centration reset and sclerite is stablized.
The two ends of fixed traction pin 3 are inserted in the chute 11 of two screw rods 1 respectively, cross center, middle phalanx far-end side, draw finger tip during application, make proximal phalangeal joints keep natural joint gap, play fixed traction effect.Nut 6 and screw rod 1 threaded engagement, be respectively used to the position limiting fixed traction pin 3 and maintain reset pin 4.
Hinge type traction external fixer provided by the invention, can provide lasting pull strength to proximal phalangeal joints, thus keep natural joint gap.This both can recover the normal tension of joint capsule and side para-ligament, effectively prevented the contracture of joint capsule and side para-ligament, can alleviate joint load again, eliminated the joint other end to the stress of fracture end, was conducive to the functional rehabilitation of quickly-healing and the hands of fracturing.The centration that the present invention can maintain joint resets, and can prevent joint Redislocation.And functional exercise early, can carry out the active flexion-extension motion in joint after surgery the same day, this is conducive to the quickly-healing of articular cartilage and function of joint is recovered as early as possible.Profile of the present invention is light and handy, simple to operate, is easy to clinical expansion.
In order to optimize technique scheme further, the embodiment of the present invention also can comprise strengthens stabilization needle 2, and the two ends strengthening stabilization needle 2 are inserted in the chute 11 of two screw rods 1 respectively, and are positioned at the top of chute 11, strengthens stabilization needle 2 and is fixed by nut.Strengthen stabilization needle 2 for strengthening mechanical stability of the present invention.
In the present embodiment, center of rotation pin 5, maintenance reset pin 4, reinforcement stabilization needle 2 and fixed traction pin 3 are arranged in parallel.Center of rotation pin 5, maintenance reset pin 4, reinforcement stabilization needle 2 and fixed traction pin 3 are the Kirschner wire of diameter 1.2mm.
The length of screw rod 1 is 80mm, and pitch is 1mm, and engineering diameter is 4mm, and the depth of thread is 0.4mm.Wherein, the long end of chute 11 is 75mm, and width is 1.2mm.
Center of rotation pin 5 is arranged at bottom screw rod 1 to be installed in through hole 12, in center, proximal phalanx head side, namely side para-ligament starting point (the bone projection small in ends of anteroposterior position X-ray display proximal phalanx neck) is parallel to proximal phalangeal joints and penetrates, and effect is 1, countertraction 2, proximal phalangeal joints are stretched should as center when bending movable.
Maintain reset pin 4 to be arranged in screw rod 1 chute 11, cross center, middle phalanx near-end side, the pressurization of applying for maintaining joint centration reset and sclerite is stablized.
In the present embodiment, center of rotation pin 5 is connected with hinge format with the installation through hole 12 bottom both sides screw rod 1.Center of rotation pin 5, maintenance reset pin 4 and fixed traction pin 3 are arranged in parallel, and center of rotation pin 5, maintenance reset pin 4 and fixed traction pin 3 are Kirschner wire.
Screw rod 1 and nut 6 are special, roentgenolucent material should be selected, center of rotation pin 5 is connected with hinge format with the installation through hole 12 of screw rod 1, maintains reset pin 4 and is connected with screw rod 1 chute 11 with reinforcement stabilization needle 2 with fixed traction pin 3, and fixes with the nut 6 that the screw thread of screw rod 1 matches.The length of screw rod 1 is 80mm, and pitch is 1mm, and engineering diameter is 4mm, and the depth of thread is 0.4mm.Wherein, the long end of chute 11 is 75mm, and width is 1.2mm.
Using method of the present invention:
1, first X-ray examination location penetrates center of rotation pin 5;
2, center of rotation pin 5 is cut short make it expose the outer about 6mm of both sides skin, the two ends of center of rotation pin 5 are inserted in the installation through hole 12 of two screw rods 1;
3, be parallel to interphalangeal joint far away in middle phalanx far-end and penetrate fixed traction pin 3, simultaneously by the chute 11 of insertion both sides, the two ends screw rod 1 of fixed traction pin 3;
4, draw finger tip, make joint or the reduction of the fracture, the pull needle that is tightened 3 both sides nut fixes fixed traction pin 3;
If 5 joints still exist the palm, dorsal part is unstable, then need the nut unclamping fixed traction pin 3 two ends, again after embolia, then between center of rotation pin 5 and fixed traction pin 3, penetrate in the chute 11 of both sides screw rod and maintain reset pin 4, adjust pull strength amount under X-ray examination after, the pull needle that is tightened 3 and the nut maintaining reset pin 4 two ends;
6, reinforcement stabilization needle 2 is fixed on screw rod farthest in end slot with nut, is used for strengthening the mechanical stability of this device;
7, last under X-ray examination passive activity joint, observe fracture and stability of joint and joint space size.Adjusted as the case may be;
8, the second day after operation joint can carried out initiatively stretch bend movable.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1., for a hinge type traction external fixer for fixing phalanges, it is characterized in that, comprising:
Screw rod (1), is two, and is arranged in parallel, and described screw rod (1) axial arrangedly has chute (11) along it, and the bottom of described screw rod (1) offers installs through hole (12);
Two ends are inserted in the center of rotation pin (5) in the installation through hole (12) of two described screw rods (1) respectively, and described center of rotation pin is parallel to proximal phalangeal joints in side para-ligament starting point and penetrates;
Two ends are inserted in the chute (11) of two described screw rods (1) respectively, for crossing the maintenance reset pin (4) at center, middle phalanx near-end side;
Two ends are inserted in the fixed traction pin (3) in the chute (11) of two described screw rods (1) respectively, described fixed traction pin crosses center, middle phalanx far-end side, traction finger tip, makes proximal phalangeal joints keep natural joint gap;
With described screw rod (1) threaded engagement, be respectively used to the nut (6) limiting described fixed traction pin (3) and described maintenance reset pin (4) position;
Also comprise and strengthen stabilization needle (2), the two ends of described reinforcement stabilization needle (2) are inserted in the chute (11) of two described screw rods (1) respectively, and are positioned at the top of described chute (11).
2. hinge type traction external fixer according to claim 1, it is characterized in that, described reinforcement stabilization needle (2) is fixed by nut.
3. hinge type traction external fixer according to claim 2, it is characterized in that, described center of rotation pin (5), maintenance reset pin (4), described reinforcement stabilization needle (2) and described fixed traction pin (3) are arranged in parallel.
4. hinge type traction external fixer according to claim 3, it is characterized in that, described center of rotation pin (5), maintenance reset pin (4), described reinforcement stabilization needle (2) and described fixed traction pin (3) are Kirschner wire.
5. the hinge type traction external fixer according to any one of claim 1-4, it is characterized in that, the length of described screw rod (1) is 80mm, and pitch is 1mm, and engineering diameter is 4mm, and the depth of thread is 0.4mm.
6. hinge type traction external fixer according to claim 5, it is characterized in that, the length of described chute (11) is 75mm, and width is 1.2mm.
7. hinge type traction external fixer according to claim 5, it is characterized in that, described center of rotation pin (5), maintenance reset pin (4), described reinforcement stabilization needle (2) and described fixed traction pin (3) are the Kirschner wire of diameter 1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210155129.0A CN102783998B (en) | 2012-05-15 | 2012-05-15 | Hinge type dragging external fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210155129.0A CN102783998B (en) | 2012-05-15 | 2012-05-15 | Hinge type dragging external fixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102783998A CN102783998A (en) | 2012-11-21 |
| CN102783998B true CN102783998B (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210155129.0A Expired - Fee Related CN102783998B (en) | 2012-05-15 | 2012-05-15 | Hinge type dragging external fixing device |
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| CN (1) | CN102783998B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6248239B2 (en) * | 2013-11-06 | 2017-12-20 | 哲也 新井 | External fixator for the treatment of finger joint fractures |
| CN109044510B (en) * | 2018-06-26 | 2020-11-20 | 叶智江 | phalanx micro external fixator |
| GB2598482B (en) | 2021-09-07 | 2022-12-21 | Kings Tree Innovations Ltd | External fixator and kit comprising the same |
| CN114617624B (en) * | 2022-03-09 | 2023-05-23 | 四川大学华西医院 | Lifting and reduction aid for femoral shaft fracture surgery |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0685206A1 (en) * | 1994-05-26 | 1995-12-06 | Waldemar Link (GmbH & Co.) | Finger bone fixator |
| FR2855040A1 (en) * | 2003-05-23 | 2004-11-26 | Comptoir Hospitalier Orthopedi | Finger e.g. thumb, bone setting device for treating periarticular fracture, has two parallel pins placed on either side of lesion to be treated, and elastic module including two flasks and moving two pins away from each other |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100335012C (en) * | 2004-05-10 | 2007-09-05 | 左中男 | Sport-type regulatable phalanx external fixing carriage |
| US8282636B2 (en) * | 2009-08-10 | 2012-10-09 | Imds Corporation | Orthopedic external fixator and method of use |
-
2012
- 2012-05-15 CN CN201210155129.0A patent/CN102783998B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0685206A1 (en) * | 1994-05-26 | 1995-12-06 | Waldemar Link (GmbH & Co.) | Finger bone fixator |
| FR2855040A1 (en) * | 2003-05-23 | 2004-11-26 | Comptoir Hospitalier Orthopedi | Finger e.g. thumb, bone setting device for treating periarticular fracture, has two parallel pins placed on either side of lesion to be treated, and elastic module including two flasks and moving two pins away from each other |
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| Publication number | Publication date |
|---|---|
| CN102783998A (en) | 2012-11-21 |
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