CN220236989U - External fixing device for ring-type limb reconstruction - Google Patents
External fixing device for ring-type limb reconstruction Download PDFInfo
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- CN220236989U CN220236989U CN202321636608.4U CN202321636608U CN220236989U CN 220236989 U CN220236989 U CN 220236989U CN 202321636608 U CN202321636608 U CN 202321636608U CN 220236989 U CN220236989 U CN 220236989U
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- 230000007246 mechanism Effects 0.000 claims abstract description 102
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 208000015181 infectious disease Diseases 0.000 description 3
- 208000032544 Cicatrix Diseases 0.000 description 2
- 208000002193 Pain Diseases 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000036407 pain Effects 0.000 description 2
- 231100000241 scar Toxicity 0.000 description 2
- 230000037387 scars Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000011164 ossification Effects 0.000 description 1
- 230000002188 osteogenic effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The application provides an external fixing device for ring-type limb reconstruction, which solves the technical problems of complex structure and complex operation of the existing bone carrying device of the ring-type external frame; the device comprises a first fixing mechanism for fixing one end of bone tissue and a second fixing mechanism for fixing the other end of bone tissue, wherein the first fixing mechanism is connected with the second fixing mechanism through a connecting piece; the traction rope comprises a traction rope body, a first fixing mechanism and a second fixing mechanism, wherein the traction rope body is provided with a plurality of traction ropes, the first fixing mechanism is provided with a plurality of traction ropes, and the second fixing mechanism is provided with a plurality of traction ropes; the second fixing mechanism is provided with a guiding mechanism corresponding to the traction rope. The medical device and the method are widely applied to the technical field of medical devices.
Description
Technical Field
The present application relates to medical devices, and more particularly to an external fixation device for ring-type limb reconstruction.
Background
In the current fracture surgery treatment, serious injury or deficiency often occurs at the fracture part, and in clinic, an Ilizarov ring type external frame is often adopted for bone carrying surgery. The Ilizarov device is a complex ring-shaped stent system that is attached to a stent by a multi-planar, horizontal, K-wire penetrating the bone and limbs, securing it as one piece at the proximal and distal ends of the bone defect, and transporting the free fractured bone ends to the bone defect. During the osteogenic handling process, new bone tissue may grow at the links.
The existing Ilizarov ring type outer frame bone conveying device still has a complex structure, 3-4 about adjusters are required to be installed, the adjusters are required to be sequentially adjusted and locked each time when the bone conveying is carried out, the operation is complex, and in addition, the middle ring which penetrates the bone when the bone conveying is carried along with the bone, so that the Kirschner wire is pulled through the skin to generate scars and pains, the risk of easy infection of needle tracks is caused by excessive Kirschner wire, and therefore, the bone conveying structure of the Ilizarov ring type outer frame needs to be improved.
Disclosure of Invention
For solving the problem that the bone handling device of current ring type outer frame structure is complicated, complex operation, the technical scheme that this application adopted is: the external fixing device for ring-type limb reconstruction comprises a first fixing mechanism for fixing one end of bone tissue and a second fixing mechanism for fixing the other end of bone tissue, wherein the first fixing mechanism is connected with the second fixing mechanism through a connecting piece; the traction rope comprises a traction rope body, a first fixing mechanism and a second fixing mechanism, wherein the traction rope body is provided with a plurality of traction ropes, the first fixing mechanism is provided with a plurality of traction ropes, and the second fixing mechanism is provided with a plurality of traction ropes; the second fixing mechanism is provided with a guiding mechanism corresponding to the traction rope.
Preferably, the traction mechanism comprises a fixed sleeve, an adjusting nut and a movable screw, one end of the fixed sleeve is rotatably connected with the adjusting nut, and the other end of the fixed sleeve is connected with the first fixing mechanism; one end of the movable screw rod is in threaded connection with the adjusting nut, and the other end of the movable screw rod is connected with the traction rope.
Preferably, the fixing sleeve is connected to the first fixing means by a connecting plate.
Preferably, the movable screw is connected with the traction rope through a locking connecting assembly, the locking connecting assembly comprises a clamping screw and a clamping nut, and the movable screw is provided with a radial connecting hole; the clamping screw rod is inserted into the radial connecting hole and connected with the clamping nut, and the clamping screw rod is also provided with a clamping hole.
Preferably, the movable screw is a D-shaped threaded rod, and the flat end surface is provided with scale marks.
Preferably, the end part of the movable screw rod is in threaded connection with a threaded connecting piece with a connecting ring, and the connecting ring is provided with a radial connecting hole.
Preferably, the guide mechanisms are arranged in two and are respectively arranged corresponding to the two traction mechanisms.
Preferably, the guiding mechanism comprises a pulley disc and a connecting seat, and the pulley disc is connected with the second fixing mechanism through the connecting seat.
Preferably, the first fixing mechanism and the second fixing mechanism comprise a first fixing ring and fixing nails connected with the first fixing ring.
Preferably, a third fixing mechanism is arranged between the first fixing mechanism and the second fixing mechanism, the third fixing mechanism comprises a second fixing ring, and the second fixing ring is connected with the connecting piece.
The utility model has the beneficial effects of simple structure and convenient operation. On the basis of the first fixing mechanism and the second fixing mechanism, a traction rope and a guiding mechanism are additionally arranged. During operation, the first fixing mechanism and the second fixing mechanism are respectively fixed with the near-end simulated bone and the far-end simulated bone, the middle section of the traction rope is fixed with the free bone, and the traction rope can be retracted through the traction mechanism, so that the free bone is dragged to finish bone carrying operation. In the whole process, the movement of the free bone is directly driven by the traction rope, so that the existing carrying structure dragged by the Kirschner wire is effectively eliminated, and the skin is scared, painful and needle tract infection caused.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a schematic structural view of a traction mechanism;
fig. 3 is a schematic structural view of the guide mechanism and the traction rope.
The symbols in the drawings illustrate:
1. a first fixing mechanism; 2. a second fixing mechanism; 3. a connecting piece; 4. a traction mechanism; 5. a traction rope; 6. a guide mechanism; 7. proximal simulated bone; 8. distal simulated bone; 9. free bone; 10. a fixed sleeve; 11. an adjusting nut; 12. a movable screw; 13. a connecting plate; 14. clamping a screw; 15. clamping a nut; 16. radial connecting holes; 17. a threaded connection; 18. a clamping hole; 19. a lock nut; 20. a flat end surface; 21. a wheel pulley; 22. a connecting seat; 23. a first fixing ring; 24. fixing nails; 25. a third fixing mechanism; 26. an annular groove.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
It should be noted that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The ring-type limb reconstruction external fixation device provided in the embodiment of the present application will now be described.
Referring to fig. 1 and 3, a schematic structural diagram of an external fixing device for ring-type limb reconstruction is shown, the external fixing device for ring-type limb reconstruction includes a first fixing mechanism 1 for fixing one end of bone tissue, and a second fixing mechanism 2 for fixing the other end of bone tissue, wherein the first fixing mechanism 1 is connected with the second fixing mechanism 2 through a connecting piece 3; the device also comprises two traction mechanisms 4 which are oppositely arranged, wherein the fixed ends of the two traction mechanisms 4 are connected with the first fixing mechanism 1, and the movable ends of the two traction mechanisms 4 are respectively connected with the two ends of the traction rope 5; the second fixing means 2 is provided with guiding means 6 corresponding to the traction ropes 5.
In operation, the first fixing mechanism 1 is fixed to the proximal simulated bone 7, and the second fixing mechanism 2 is fixed to the distal simulated bone 8. The middle section of the traction rope 5 surrounds the surface of the free bone 9, two ends of the traction rope 5 penetrate out through the medullary cavity of the free bone 9 and enter the medullary cavity of the far-end simulated bone 8 to penetrate out, and finally the traction rope is connected with the movable ends of the two traction mechanisms 4 by bypassing the guide mechanism 6. When carrying bone, doctor or patient can drive haulage rope 5 middle section through driving traction mechanism 4 and tighten up to drag free bone 9 and be close to distal end simulation bone 8 until contact, keep away from proximal end simulation bone 7, thereby be favorable to new bone formation. In the whole process, the movement of the free bone 9 is directly driven by the traction rope 5, so that the risks of scars, pains and needle tract infection caused by the drag of the Kirschner wire through the skin are eliminated.
Referring to fig. 2, the traction mechanism 4 may be any mechanism capable of providing axial traction to control the retraction of the traction rope 5. The traction mechanism 4 may be manual or electric. Further, the traction mechanism 4 may be a cylinder, an oil cylinder, an electric telescopic rod, a nut and screw combination, a gear and rack combination, or the like. Preferably, in one embodiment, the traction mechanism 4 takes the form of a nut and screw combination, specifically, it comprises a fixed sleeve 10, an adjusting nut 11 and a movable screw 12, one end of the fixed sleeve 10 is rotatably connected with the adjusting nut 11, one end of the movable screw 12 is in threaded connection with the adjusting nut 11, and the other end of the movable screw 12 is connected with the traction rope 5. The movable screw 12 can be driven by the adjusting nut 11 to enter and exit the fixed sleeve 10, so as to provide traction force for winding and unwinding the traction rope 5.
The other end of the fixing sleeve 10 is connected to the first fixing mechanism 1. Specifically, the fixing sleeve 10 is connected to the first fixing mechanism 1 via a connection plate 13, and the connection plate 13 is connected to the fixing sleeve 10 and the first fixing mechanism 1 via a fastener such as a detachable bolt.
The rotatable connection of the fixed sleeve 10 and the adjusting nut 11 further illustrates that the fixed sleeve 10 is provided with an annular groove 26, the adjusting nut 11 is provided with a corresponding annular boss, and the fixed sleeve and the adjusting nut are matched, so that the requirement that the adjusting nut 11 drives the movable screw 12 to axially move is met, and the adjusting nut 11 is prevented from falling out of the fixed sleeve 10.
The movable screw 12 is connected with the traction rope 5 through a locking connecting assembly, the locking connecting assembly comprises a clamping screw 14 and a clamping nut 15, and the movable screw 12 is provided with a radial connecting hole 16; the clamping screw 14 is inserted into the radial connection hole 16 and connected with the clamping nut 15, and the clamping screw 14 is further provided with a clamping hole 18. During assembly, the clamping screw 14 is inserted into the radial connecting hole 16 and screwed with the clamping nut 15, the traction rope 5 is inserted into the clamping hole 18 of the clamping screw 14, the clamping nut 15 is screwed, and the space between the movable screw 12 and the clamping screw 14 is compressed, so that the traction rope 5 between the movable screw 12 and the clamping screw 14 is extruded and fixed.
The radial connecting hole 16 may be formed directly at the end of the movable screw 12 or may be formed in a connecting member connected to the end of the movable screw 12. In one embodiment, the latter form is employed. Specifically, the end of the movable screw 12 is screwed with a threaded connection 17 with a connection ring provided with the radial connection hole 16. In order to lock the threaded connection 17 against rattling, the movable screw 12 above the threaded connection 17 is further sleeved with a lock nut 19.
Further, the movable screw 12 is a D-shaped threaded rod, and the flat end surface 20 thereof is provided with scale marks, which is beneficial to saving adjustment steps, and the adjustment of bone transport is realized in place by accurately controlling the retraction length of the traction rope 5.
In one embodiment, referring to fig. 1 and 3, two guiding mechanisms 6 are provided and distributed on two sides of the second fixing mechanism 2 and are disposed corresponding to the two traction mechanisms 4. The guide mechanism 6 comprises a pulley 21 and a connecting seat 22, and the pulley 21 is connected with the second fixing mechanism 2 through the connecting seat 22. The pulley 21 is provided with a guide groove along the circumference, and the traction rope 5 can slide along the guide groove.
Finally, referring to fig. 1, regarding the first fixing mechanism 1 and the second fixing mechanism 2, the two fixing mechanisms are coaxially disposed and have the same structure. Each comprising a first fixing ring 23, a fixing peg 24 connected to the first fixing ring 23. The first fixing ring 23 is provided with a plurality of connecting holes, and the corresponding connecting holes on the two fixing rings are connected through four sets of threaded connecting pieces and nuts, so that the fixation of two ends of bone tissues is realized. Further, a third fixing mechanism 25 may be additionally arranged between the first fixing mechanism 1 and the second fixing mechanism 2, the third fixing mechanism 25 is provided with a second fixing ring, and the second fixing ring is fixedly connected to the connecting piece 3. The third fixing mechanism is not provided with fixing nails, and plays a role in reinforcing the stability of the device.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (10)
1. An external fixation device for ring limb reconstruction comprises a first fixation mechanism for fixing one end of bone tissue and a second fixation mechanism for fixing the other end of bone tissue, wherein the first fixation mechanism is connected with the second fixation mechanism through a connecting piece; the method is characterized in that:
the traction mechanism is characterized by further comprising two traction mechanisms which are oppositely arranged, wherein the fixed ends of the two traction mechanisms are connected with the first fixing mechanism, and the movable ends of the two traction mechanisms are respectively connected with the two ends of the traction rope; the second fixing mechanism is provided with a guiding mechanism corresponding to the traction rope.
2. The external fixation device for ring-type limb reconstruction as set forth in claim 1, wherein: the traction mechanism comprises a fixed sleeve, an adjusting nut and a movable screw, one end of the fixed sleeve is rotatably connected with the adjusting nut, and the other end of the fixed sleeve is connected with the first fixing mechanism; one end of the movable screw is in threaded connection with the adjusting nut, and the other end of the movable screw is connected with the traction rope.
3. The external fixation device for ring-type limb reconstruction as set forth in claim 2, wherein: the fixed sleeve is connected with the first fixing mechanism through a connecting plate.
4. The external fixation device for ring-type limb reconstruction as set forth in claim 2, wherein: the movable screw is connected with the traction rope through a locking connecting assembly, the locking connecting assembly comprises a clamping screw and a clamping nut, and the movable screw is provided with a radial connecting hole; the clamping screw rod is inserted into the radial connecting hole and connected with the clamping nut, and the clamping screw rod is further provided with a clamping hole.
5. The external fixation device for ring-type limb reconstruction as set forth in claim 2, wherein: the movable screw is a D-shaped threaded rod, and the flat end face is provided with scale marks.
6. The external fixation device for ring-type limb reconstruction of claim 4, wherein: the end part of the movable screw is in threaded connection with a threaded connecting piece with a connecting ring, and the connecting ring is provided with the radial connecting hole.
7. The external fixation device for ring-type limb reconstruction according to claim 1 or 2, wherein: the guide mechanisms are arranged in two and are respectively arranged corresponding to the two traction mechanisms.
8. The external fixation device for ring-type limb reconstruction of claim 7, wherein: the guide mechanism comprises a roller pulley and a connecting seat, and the roller pulley is connected with the second fixing mechanism through the connecting seat.
9. The external fixation device for ring-type limb reconstruction as set forth in claim 1, wherein: the first fixing mechanism and the second fixing mechanism comprise a first fixing ring and fixing nails connected with the first fixing ring.
10. The external fixation device for ring-type limb reconstruction of claim 9, wherein: and a third fixing mechanism is arranged between the first fixing mechanism and the second fixing mechanism and comprises a second fixing ring, and the second fixing ring is connected with the connecting piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321636608.4U CN220236989U (en) | 2023-06-26 | 2023-06-26 | External fixing device for ring-type limb reconstruction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321636608.4U CN220236989U (en) | 2023-06-26 | 2023-06-26 | External fixing device for ring-type limb reconstruction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220236989U true CN220236989U (en) | 2023-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321636608.4U Active CN220236989U (en) | 2023-06-26 | 2023-06-26 | External fixing device for ring-type limb reconstruction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220236989U (en) |
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2023
- 2023-06-26 CN CN202321636608.4U patent/CN220236989U/en active Active
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