CN217566269U - Minimally invasive hallux valgus osteotomy intramedullary fixation system - Google Patents
Minimally invasive hallux valgus osteotomy intramedullary fixation system Download PDFInfo
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- CN217566269U CN217566269U CN202220373821.XU CN202220373821U CN217566269U CN 217566269 U CN217566269 U CN 217566269U CN 202220373821 U CN202220373821 U CN 202220373821U CN 217566269 U CN217566269 U CN 217566269U
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Abstract
The utility model discloses a minimally invasive intramedullary fixation system for hallux valgus osteotomy, which comprises an internal fixation device and an auxiliary navigation device, wherein the internal fixation device comprises an intramedullary fixation main nail, an anti-rotation nail and a locking screw, the near end of the intramedullary fixation main nail is provided with an anti-rotation hole for arranging the anti-rotation nail, and the far end of the intramedullary fixation main nail is provided with a locking hole for arranging the locking screw; the auxiliary navigation device comprises a handle and a navigation rod, one end of the handle can be connected with an intramedullary nail through a quick bayonet, the other end of the handle is connected with the navigation rod, the navigation rod is parallel to the intramedullary fixation main nail, and a navigation hole corresponding to the locking hole is formed in the navigation rod. In addition, the utility model discloses clinical use is convenient, is favorable to promoting.
Description
Technical Field
The utility model relates to a thumb turn up cuts intrameduallary fixation technical field, in particular to wicresoft's thumb turn up cuts intramedullary fixation system of bone.
Background
Hallux valgus deformity refers to the lateral deflection of the big toe at the first metatarsophalangeal joint. Hallux valgus is a complex anatomical deformity and is therapeutically very challenging. Hallux valgus is the most common lesion affecting the hallux, most often seen in middle-aged and elderly women, most often occurring in people with genetic predisposition and long-term wearing of unsuitable shoes which exert abnormal pressure on the hallux.
The operation treatment is the ultimate treatment mode of hallux valgus, and an appropriate operation method is selected according to the specific condition of a patient. In mild and moderate hallux valgus, when the included angle between the first and second metatarsal bones is less than 15 deg., the medial metatarsal head osteophyte can be removed, and the tendon of the muscle of the adductor hallucis thumb can be cut off or removed. The severed end of the tendon of the adductor pollicis is displaced to the outside of the neck of the metatarsal head or is removed by means of a neck osteotomy of the metatarsal head. If the angle between the first and second metatarsal is greater than 15, a first metatarsal shaft or base osteotomy is typically used more often. For patients with osteoarthritis of the first metatarsophalangeal joint, the first metatarsophalangeal joint fusion is often used in younger patients.
However, the conventional hallux valgus operation mode is basically an open operation mode, the minimally invasive hallux valgus osteotomy mode is an osteotomy mode developed in recent years, the operation type fixing modes are basically divided into two modes at present, one mode is that the distal end of a kirschner wire is penetrated and fixed through skin, the biggest defect of the fixing mode is that the movement of the distal joint of the hallux is limited during the fixing period, the kirschner wire left outside the skin influences the wearing of shoes, the nursing is very inconvenient, and the infection is easily caused; the other fixing mode is the oblique fixing of the hollow headless pressurizing screw, the inconvenience caused by the fixation of the Kirschner wire can be avoided by the fixing mode, but the difficulty of the mode is very high when the screw is placed in an operation, the experience of an operator is rich, and the accurate fixation can be realized only by repeated fluoroscopy in the screw placing process.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a minimally invasive hallux valgus osteotomy intramedullary fixation system, which solves the problems of unstable fixation, easy infection, joint movement restriction and the like of a far-end percutaneous kirschner wire; solves the problems of difficult nail placement, repeated perspective and the like of the fixation of the near-end percutaneous hollow nail screw.
In order to achieve the above object, the present invention provides the following technical solutions: a minimally invasive intramedullary fixation system for hallux valgus osteotomy comprises an inner fixation device and an auxiliary navigation device, wherein the inner fixation device comprises an intramedullary fixation main nail, an anti-rotation nail and a locking screw, the proximal end of the intramedullary fixation main nail is provided with an anti-rotation hole for arranging the anti-rotation nail, and the distal end of the intramedullary fixation main nail is provided with a locking hole for arranging the locking screw; the auxiliary navigation device comprises a handle and a navigation rod, one end of the handle can be connected with the intramedullary nail through the quick bayonet, the other end of the handle is connected with the navigation rod, the navigation rod is parallel to the intramedullary fixation main nail, and the navigation rod is provided with a navigation hole corresponding to the locking hole.
Preferably, the intramedullary fixation main nail has a proximal end which is an intramedullary part, is cylindrical, is positioned in a medullary cavity at the proximal end of the first metatarsal after fixation, and has a distal end part which is shaped like a steel plate and is positioned in the cortex inside the distal end of the first metatarsal after fixation.
Preferably, the number of the locking holes is 2-3.
Preferably, the locking hole is provided with an internal thread.
Preferably, the auxiliary navigation device further comprises a navigation sleeve, and the navigation sleeve can assist in the nail placement of the main nail proximal end anti-rotation nail through the hole.
The beneficial effect of adopting above technical scheme is: the utility model discloses wicresoft's hallux valgus cuts bone marrow internal fixation system of structure is based on present hallux valgus wicresoft cuts the bone design for can carry out the wicresoft and cut the bone, again can the wicresoft fix, and fixed firm effective, the patient can carry out function training and bear a burden in the postoperative early stage. In addition, the utility model discloses clinical use is convenient, is favorable to promoting.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic view of the intramedullary fixation nail of the present invention;
fig. 3 is a schematic structural view of the intramedullary fixation nail of the present invention for fixing the first metatarsal bone.
Wherein, 1-intramedullary fixation main nail, 2-anti-rotation nail, 3-locking screw, 4-anti-rotation hole, 5-locking hole, 6-handle, 7-navigation rod, 8-navigation hole, 9-navigation sleeve, 10-cylinder, 11-steel plate, 12-distal end of first metatarsal, 13-proximal end of first metatarsal.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 shows a specific embodiment of the present invention: the intramedullary fixing system comprises an inner fixing device and an auxiliary navigation device, wherein the inner fixing device comprises an intramedullary fixing main nail 1, an anti-rotation nail 2 and a locking screw 3.
The intramedullary fixation main nail 1 comprises two parts, wherein the proximal end is an intramedullary part and is a cylinder 10, the intramedullary part is positioned in the medullary cavity of the proximal end 13 of the first metatarsus after fixation, and the intramedullary nail 10 is provided with an anti-rotation hole 4 which can be locked with an anti-rotation nail 2 and fix the proximal part of the first metatarsus; the distal part of the intramedullary fixation nail 1 is designed in the form of a locking steel plate 11, is positioned in the cortex inside the distal end 12 of the first metatarsal after fixation, and is provided with 2-3 locking holes 5 capable of locking the screws 3 on the surface, and the locking holes are matched with the locking screws 3 to fix the distal part of the first metatarsal.
The auxiliary navigation system comprises a handle 6 and a navigation rod 7, wherein the handle 6 is in a door shape, one end of the handle can be connected with an intramedullary nail through a quick bayonet, and the handle can be quickly detached; one end of the navigation rod is connected with a navigation rod 7, the navigation rod 7 is parallel to the intramedullary fixed main nail 1, a navigation hole 8 corresponding to the intramedullary main nail near-end locking hole 5 is arranged on the navigation rod 7, and a navigation sleeve 9 can assist in placing the main nail near-end anti-rotation nail 2 through the navigation hole.
And (3) minimally invasive surgery, namely drawing a bone cutting line at the first metatarsal, pushing the distal end 12 of the first metatarsal outwards after bone cutting is finished, assembling the intramedullary fixing main nail 1 and the auxiliary navigation system, holding the handle 6 to insert the intramedullary fixing main nail 1 into the proximal end 13 of the first metatarsal, drilling the proximal end through the navigation sleeve 9 and locking the anti-rotation nail 4, removing the navigation system and placing the distal locking screw 3.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and improvements can be made without departing from the inventive concept, and all of them belong to the protection scope of the present invention.
Claims (5)
1. The intramedullary fixing system for minimally invasive hallux valgus osteotomy is characterized by comprising an internal fixing device and an auxiliary navigation device, wherein the internal fixing device comprises an intramedullary fixing main nail, an anti-rotation nail and a locking screw, the proximal end of the intramedullary fixing main nail is provided with an anti-rotation hole for arranging the anti-rotation nail, and the distal end of the intramedullary fixing main nail is provided with a locking hole for arranging the locking screw; the auxiliary navigation device comprises a handle and a navigation rod, one end of the handle can be connected with the intramedullary nail through the quick bayonet, the other end of the handle is connected with the navigation rod, the navigation rod is parallel to the intramedullary fixation main nail, and the navigation rod is provided with a navigation hole corresponding to the locking hole.
2. The intramedullary fixation system of claim 1, wherein the intramedullary fixation nail has a proximal portion that is cylindrical and is configured to be positioned within a proximal medullary cavity of the first metatarsal when fixed, and a distal portion that is configured as a plate and is configured to be positioned within a distal medial cortex of the first metatarsal when fixed.
3. The minimally invasive hallux valgus osteotomy intramedullary fixation system of claim 1, wherein 2-3 of the locking holes are provided.
4. The minimally invasive hallux valgus osteotomy intramedullary fixation system of claim 1, wherein the locking hole is internally threaded.
5. The minimally invasive hallux valgus osteotomy intramedullary fixation system of claim 1, wherein the auxiliary navigation device further comprises a navigation sleeve, and the navigation sleeve can assist in nail placement of the proximal anti-rotation nail of the main nail through the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220373821.XU CN217566269U (en) | 2022-08-01 | 2022-08-01 | Minimally invasive hallux valgus osteotomy intramedullary fixation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220373821.XU CN217566269U (en) | 2022-08-01 | 2022-08-01 | Minimally invasive hallux valgus osteotomy intramedullary fixation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217566269U true CN217566269U (en) | 2022-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220373821.XU Active CN217566269U (en) | 2022-08-01 | 2022-08-01 | Minimally invasive hallux valgus osteotomy intramedullary fixation system |
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| Country | Link |
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| CN (1) | CN217566269U (en) |
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2022
- 2022-08-01 CN CN202220373821.XU patent/CN217566269U/en active Active
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