CN213910475U

CN213910475U - Three-dimensional resetting and fixing device for metatarsus wedge joint fusion

Info

Publication number: CN213910475U
Application number: CN202022489059.5U
Authority: CN
Inventors: 魏宝富; 伏传升; 荣凯
Original assignee: Shandong Provincial Hospital Affiliated to Shandong First Medical University
Current assignee: Shandong Provincial Hospital Affiliated to Shandong First Medical University
Priority date: 2020-11-02
Filing date: 2020-11-02
Publication date: 2021-08-10
Anticipated expiration: 2030-11-02

Abstract

The utility model relates to a three-dimensional fixing device that resets of sole wedge joint fusion belongs to medical instrument technical field. The device includes baffle and the steel sheet that resets, and the baffle is rectangular shaped plate, and the baffle both sides set up the stationary vane respectively, set up osteotomy groove A and osteotomy groove B in the baffle respectively, can realize the three-dimensional bone of cutting of metatarsal wedge joint through osteotomy groove A and osteotomy groove B, set up fixed orifices A on the baffle, set up fixed orifices B on the steel sheet that resets. The utility model discloses a three-dimensional osteotomy of baffle, the screw is unstable with the three-dimensional fixed treatment severe hallux valgus deformity and metatarsal wedge joint of the steel sheet that resets, and is easy and simple to handle, and the wound is little, and three-dimensional fixed is firm, labour saving and time saving.

Description

Three-dimensional resetting and fixing device for metatarsus wedge joint fusion

Technical Field

The utility model relates to a three-dimensional fixing device that resets of sole wedge joint fusion belongs to medical instrument technical field.

Background

Hallux valgus is the most common foot deformity of middle-aged and old women, particularly severe hallux valgus deformity, and brings great inconvenience to people who wear shoes and daily life. Patients with severe hallux valgus deformity and unstable first metatarsophalangeal joints have difficulty in correcting deformity by loosening simple distal soft tissues or combining Chevron osteotomy and minimally invasive osteotomy. Although Scarf osteotomy and proximal basal osteotomy orthopedic surgery are also used for correcting moderate and severe hallux valgus deformity, the surgical trauma and the technical difficulty are both large, the recovery time is long, and the complications are many. The traditional metatarsophalangeal joint fusion is only the fusion of the metatarsophalangeal joint and cannot well correct the severe hallux valgus deformity.

Disclosure of Invention

To prior art's not enough, the utility model provides a three-dimensional fixing device that resets is fused to metatarsal wedge joint cuts the bone through the three-dimensional of baffle, and the three-dimensional fixed treatment severe hallux valgus deformity and metatarsal wedge joint of screw and reset steel board are unstable.

The technical scheme of the utility model as follows:

the utility model provides a three-dimensional fixing device that resets of metatarsal wedge joint integration, includes baffle and the steel sheet that resets, and the baffle is rectangular shaped plate, and the baffle both sides set up the stationary vane respectively, set up osteotomy groove A and osteotomy groove B in the baffle respectively, can realize the three-dimensional osteotomy of metatarsal wedge joint through osteotomy groove A and osteotomy groove B, set up fixed orifices A on the baffle, set up fixed orifices B on the steel sheet that resets.

Preferably, the osteotomy groove B is parallel to one side of the guide plate where the fixing wing is positioned, and the osteotomy groove A is obliquely arranged.

Further preferably, the included angle formed by the extension lines of the osteotomy groove A and the osteotomy groove B is 5-10 degrees.

Preferably, 6 fixing holes B are provided to facilitate the fixation of the first metatarsal and the medial cuneiform bone.

Preferably, cancellous screws are arranged in the fixing holes B. The metatarsal side and the dorsal side of the reduction steel plate are respectively fixed by screwing hollow headless compression screws from the metatarsal base to the cuneiform bone at the near end inside through installing and operating a drill bit, a sleeve, a head burying device and a screwdriver which are matched with the screws, thereby realizing the three-dimensional fixation of the nail plate.

Preferably, the olive needle is arranged in the fixing hole A, so that the guide plate is conveniently fixed.

Preferably, the guide plate is made of stainless steel materials, and the reset steel plate is made of titanium alloy materials, so that high-pressure disinfection is facilitated.

When the device is used, a patient lies on the back on an operation bed and is prepared by a conventional operation. Making a straight incision in the middle of the medial surface of the metatarsal wedge joint, cutting to periosteum, separating to the metatarsal side and dorsal side, and exposing the metatarsal wedge joint. Firstly, the miniature oscillating saw simply cleans the protrusions on the joint surfaces at two sides to enable the protrusions to become flat. The wedge-shaped distraction pad is placed between the base of the 1 st metatarsal and the base of the 2 nd metatarsal, and the 1 st metatarsal is rotated to correct the rotation deformity while the lateral jaws at the metatarsal heads correct the inversion of the first metatarsal. Maintaining the reduction of the first metatarsal, vertically penetrating Kirschner wires at the proximal end of the medial cuneiform bone and the proximal end of the 1 st metatarsal bone, and clamping two Kirschner wires by using an Hintermann spreader at the dorsal side of the metatarsals respectively so as to enable the joint surfaces of the cuneiform joints to be tightly closed and correct the inversion and rotation deformity of the first metatarsal. The osteotomy guide plate is arranged in the middle of the inner side face of the metatarsal cuneiform joint, the position is adjusted to enable the osteotomy groove A to correspond to the metatarsal basilar joint face, the interval between the osteotomy groove A and the osteotomy groove B to correspond to the gap between the metatarsal cuneiform joint, and the fixing wings are fixed by two olive needles. The miniature oscillating saw cuts bones to the outer cortex of the bone through the bone cutting groove, the olive needle and the guide plate are taken out and fixed, and the cartilage surface of the cut bones is removed by the thin bone knife. The Hintermann spreader spreads joint gaps to two sides, the rongeur bites residual articular cartilage of a basal joint, 3.2 drill bits are used for drilling holes on osteotomy surfaces on two sides, the resetting metatarsal wedge joint clamps the Hintermann spreader to enable the osteotomy surfaces to be in close contact, after the position of the first metatarsal bone which is reset is checked in a fluoroscopy mode to be satisfied, a miniature steel plate is placed in the middle of the inner side surface of the metatarsal wedge joint and is fixed by a cancellous bone screw, a hollow headless pressurizing hollow screw is implanted from the outer side of the metatarsal bone basal to the proximal end on 1/3 on the inner side surface of the metatarsal wedge joint, and another hollow headless pressurizing screw is horizontally implanted from the metatarsal bone basal to the proximal end on 1/3 under the inner side surface of the metatarsal wedge joint.

After the perspective of the C arm and the fixation of the joint fusion position are satisfied, the Hintermann spreader and the Kirschner wire are removed, the incision is cleaned, and the suture is performed and then the pressure dressing is performed.

The beneficial effects of the utility model reside in that:

1. the utility model discloses a three-dimensional osteotomy of baffle, the screw is unstable with the three-dimensional fixed treatment severe hallux valgus deformity and metatarsal wedge joint of the steel sheet that resets, and is easy and simple to handle, and the wound is little, and three-dimensional fixed is firm, labour saving and time saving.

2. The utility model discloses simple structure, preparation production is convenient.

Drawings

FIG. 1 is a schematic view of the structure of the guide plate of the present invention;

FIG. 2 is a cross-sectional view of the guide plate structure of the present invention;

FIG. 3 is a schematic view of the structure of the olive needle of the present invention;

FIG. 4 is a schematic structural view of the reduction steel plate of the present invention;

FIG. 5 is a schematic view of the structure of the metatarsal wedge joint;

FIG. 6 is a schematic view of the guide plate mounting structure of the present invention;

FIG. 7 is a view of the distraction gap after osteotomy of the present invention;

fig. 8 is a schematic view of the mounting structure of the reset steel plate of the present invention;

FIG. 9 is a schematic view of the wedge-shaped spreading pad of the present invention;

wherein: 1. a guide plate; 2. a fixed wing; 3. a fixing hole A; 4. a osteotomy groove A; 5. a osteotomy groove B; 6. olive needle; 7. a wedge-shaped distraction pad; 8. resetting the steel plate; 9. and a fixing hole B.

Detailed Description

The present invention will be further described, but not limited to, by the following examples in conjunction with the accompanying drawings.

Example 1:

as shown in fig. 1 to 4, the present embodiment provides a metatarsophalangeal joint fusion three-dimensional reduction fixing device, which includes a guide plate 1 and a reduction steel plate 8, wherein the guide plate 1 is a rectangular plate, fixing wings 2 are respectively disposed on two sides of the guide plate 1, a osteotomy groove a4 and an osteotomy groove B5 are respectively disposed in the guide plate 1, three-dimensional osteotomy of the metatarsophalangeal joint can be achieved through the osteotomy groove a and the osteotomy groove B, a fixing hole A3 is disposed on the guide plate 1, and a fixing hole B9 is disposed on the reduction steel plate 8.

The osteotomy groove B5 is parallel to the side of the guide plate where the fixed wing 2 is positioned, the osteotomy groove A4 is obliquely arranged, and the included angle formed by the osteotomy groove A4 and the extension line of the osteotomy groove B5 is 5 degrees.

Example 2:

a metatarsal cuneiform joint fusion three-dimensional reduction fixing device, which is structurally as described in example 1, except that 6 fixing holes B are provided to facilitate the fixation of the first metatarsal bone and the medial cuneiform bone.

Cancellous screws are arranged in the fixing holes B9. The metatarsal side and the dorsal side of the reduction steel plate are respectively fixed by screwing hollow headless compression screws from the metatarsal base to the cuneiform bone at the near end inside through installing and operating a drill bit, a sleeve, a head burying device and a screwdriver which are matched with the screws, thereby realizing the three-dimensional fixation of the nail plate.

Example 3:

the structure of the metatarsophalangeal joint fusion three-dimensional reduction fixing device is as described in embodiment 2, and the difference is that an olive needle 6 is arranged in a fixing hole A3, so that a guide plate is convenient to fix, the guide plate is made of stainless steel materials, and a reduction steel plate is made of titanium alloy materials, so that high-pressure disinfection is convenient.

When the device is used, a patient lies on the back on an operation bed and is prepared by a conventional operation. Making a straight incision in the middle of the medial surface of the metatarsal wedge joint, cutting to periosteum, separating to the metatarsal side and dorsal side, and exposing the metatarsal wedge joint. Firstly, the miniature oscillating saw simply cleans the protrusions on the joint surfaces at two sides to enable the protrusions to become flat. The wedge-shaped spreading pad 7 is placed between the base of the 1 st metatarsal and the base of the 2 nd metatarsal, and the 1 st metatarsal is rotated to correct the rotation deformity, while the lateral jaws at the metatarsal heads correct the inversion of the first metatarsal. Maintaining the reduction of the first metatarsal, vertically penetrating Kirschner wires at the proximal end of the medial cuneiform bone and the proximal end of the 1 st metatarsal bone, and clamping two Kirschner wires by using an Hintermann spreader at the dorsal side of the metatarsals respectively so as to enable the joint surfaces of the cuneiform joints to be tightly closed and correct the inversion and rotation deformity of the first metatarsal. The osteotomy guide plate is arranged in the middle of the inner side face of the metatarsal cuneiform joint, the position is adjusted to enable the osteotomy groove A to correspond to the metatarsal basilar joint face, the interval between the osteotomy groove A and the osteotomy groove B to correspond to the gap between the metatarsal cuneiform joint, and the fixing wings are fixed by two olive needles. The miniature oscillating saw cuts bones to the outer cortex of the bone through the bone cutting groove, the olive needle and the guide plate are taken out and fixed, and the cartilage surface of the cut bones is removed by the thin bone knife. The Hintermann spreader spreads joint gaps to two sides, the rongeur bites residual articular cartilage of a basal joint, 3.2 drill bits are used for drilling holes on osteotomy surfaces on two sides, the resetting metatarsal wedge joint clamps the Hintermann spreader to enable the osteotomy surfaces to be in close contact, after the position of the first metatarsal bone which is reset is checked in a fluoroscopy mode to be satisfied, a miniature steel plate is placed in the middle of the inner side surface of the metatarsal wedge joint and is fixed by a cancellous bone screw, a hollow headless pressurizing hollow screw is implanted from the outer side of the metatarsal bone basal to the proximal end on 1/3 on the inner side surface of the metatarsal wedge joint, and another hollow headless pressurizing screw is horizontally implanted from the metatarsal bone basal to the proximal end on 1/3 under the inner side surface of the metatarsal wedge joint.

Example 4:

the structure of the metatarsophalangeal joint fusion three-dimensional reduction fixing device is as described in example 1, except that an included angle formed by an osteotomy groove A and an extension line of an osteotomy groove B is 10 degrees.

Claims

1. The utility model provides a three-dimensional fixing device that resets of metatarsal wedge joint integration which characterized in that, includes baffle and the steel sheet that resets, and the baffle is rectangular shaped plate, and the baffle both sides set up the stationary vane respectively, set up osteotomy groove A and osteotomy groove B in the baffle respectively, set up fixed orifices A on the baffle, set up fixed orifices B on the steel sheet that resets.

2. The metatarsal wedge joint fusion three-dimensional reduction fixation device according to claim 1, wherein the osteotomy groove B is parallel to the side of the guide plate where the fixation wings are located, and the osteotomy groove a is obliquely arranged.

3. The metatarsal wedge joint fusion three-dimensional reduction fixation device of claim 2, wherein the angle formed by the extension of the osteotomy groove a and the osteotomy groove B is 5-10 °.

4. The metatarsal wedge joint fusion three-dimensional reduction fixation device of claim 1, wherein there are 6 fixation holes B.

5. The metatarsal wedge joint fusion three-dimensional reduction fixation device of claim 1, wherein an olive needle is provided in the fixation hole a.

6. The metatarsal wedge joint fusion three-dimensional reduction fixation device of claim 1, wherein the guide plate is made of stainless steel and the reduction steel plate is made of titanium alloy.