CN105726110B

CN105726110B - First metatarsal distal osteotomy plate

Info

Publication number: CN105726110B
Application number: CN201410766926.1A
Authority: CN
Inventors: 徐向阳
Original assignee: SHANGHAI SIDIDE BUSINESS CONSULTING CENTER
Current assignee: SHANGHAI SIDIDE BUSINESS CONSULTING CENTER
Priority date: 2014-12-12
Filing date: 2014-12-12
Publication date: 2020-01-17
Anticipated expiration: 2034-12-12
Also published as: CN105726110A

Abstract

The invention relates to the technical field of medical instruments, and discloses a first metatarsal distal end osteotomy plate, in particular to a reverse S-shaped osteotomy plate main body, wherein the osteotomy plate main body comprises an integrally formed osteotomy plate proximal end, an osteotomy plate distal end and a transition section for connecting the osteotomy plate proximal end and the osteotomy plate distal end, a plurality of fixing holes for fixing the osteotomy plate on a first metatarsal bone are formed in the osteotomy plate main body, and the directions of the osteotomy plate proximal end and the osteotomy plate distal end are consistent with the direction of the first metatarsal bone. The first metatarsal distal end osteotomy plate provided by the invention has the advantages that the osteotomy is fixed stably and reliably, the steel plate design is adopted, the strength is high, the early function exercise is facilitated, the postoperative recovery time is shortened, and the osteoporosis hallux valgus also can be well fixed; the design of a hidden edge is adopted, so that the stimulation to soft tissues is reduced; the anatomical design is adopted, so that the anatomical reduction after the osteotomy is facilitated, and the steel plate is not required to be pre-bent in the operation.

Description

First metatarsal distal osteotomy plate

Technical Field

The invention relates to the field of medical instruments, in particular to a first metatarsal distal osteotomy plate.

Background

Hallux valgus is a common foot disease, which rarely causes attention in the early stages, but can gradually worsen with time and age, and finally, clinical symptoms appear. The patient mainly shows pain and swelling at the position of the thumb sac, difficulty in wearing shoes and walking and serious influence on the daily life of the patient. Deformities may be corrected by surgery at this time.

The currently clinically more common surgical procedure is Chevron, the first distal metatarsal osteotomy. After the osteotomy is completed, the first metatarsal head is pushed out to a satisfactory position and then fixed by screws. However, the strength of screw fixation is insufficient, particularly for osteoporosis patients, the fixed position is lost after the operation, the early functional exercise cannot be performed after the operation, the recovery time of the operation is long, and finally the operation fails.

Disclosure of Invention

The technical problem solved by the invention is as follows: the invention provides a first metatarsal distal osteotomy plate, which is used for solving the problem of poor screw fixation stability after first metatarsal distal osteotomy. The osteotomy plate is designed to be a plate type and is in an inverted S shape, and the osteotomy plate is fixed on the first metatarsus through screws, so that the strength and stability of internal fixation after osteotomy are improved.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a first metatarsal distal end osteotomy plate comprises a reverse S-shaped osteotomy plate main body, wherein the osteotomy plate main body comprises an integrally formed osteotomy plate proximal end, an osteotomy plate distal end and a transition section for connecting the osteotomy plate proximal end and the osteotomy plate distal end, a plurality of fixing holes for fixing the osteotomy plate on a first metatarsal are formed in the osteotomy plate main body, the osteotomy plate proximal end and the osteotomy plate distal end are in the same direction as the first metatarsal, the osteotomy plate is fixed on the first metatarsal, and the osteotomy plate proximal end and the osteotomy plate distal end are in the same direction as the first metatarsal.

Specifically, the geometry of the osteotomy plate in space at the first metatarsal interface matches the first metatarsal surface geometry. The fixing is more stable, the osteotomy plate does not need to be bent through a screw in the operation, pre-bending is not needed before the operation, further damage to bone in the screw fixing process due to the fact that the osteotomy plate is not attached is avoided, even first metatarsal bone fracture occurs, particularly for patients with osteoporosis, the operation is convenient, and the operation time is shortened.

Specifically, at least two fixing holes are formed in the proximal end of the osteotomy plate, at least two fixing holes are formed in the distal end of the osteotomy plate, and the osteotomy plate is fixed at two ends, so that the stress on the osteotomy plate is minimized.

Specifically, three fixing holes are arranged at the proximal end of the osteotomy plate and distributed in a triangle shape. The fixing hole is designed in a shape like a Chinese character 'pin' so that the screw fixation is more stable and firm. Specifically, the fixing hole is internally provided with an internal thread, the upper part of the fixing hole is conical, and the fixing screw cap is completely matched with the conical shape.

Specifically, the osteotomy plate main body is a stainless steel osteotomy plate, a pure titanium osteotomy plate or a carbon steel osteotomy plate.

The invention has the beneficial effects that: the invention provides a first metatarsal distal osteotomy plate, which enables the fixation after osteotomy to be more stable and reliable. The steel plate is designed, so that the strength is high, early functional exercise is facilitated, the postoperative recovery time is shortened, and the fixing effect on osteoporosis hallux valgus is good; the design of a hidden edge is adopted, so that the stimulation to soft tissues is reduced; the osteotomy plate adopts an anatomical design, so that the osteotomy can be conveniently dissected and reset, and the steel plate does not need to be pre-bent in the operation; the steel plate fixes the distal bone block by different transverse extension lengths to solve different degrees of hallux valgus deformity, and a plurality of screws are used for fixing the distal bone block, so that the osteotomy fixation is more stable and firm; the current situation that the internal fixation of the hallux valgus distal osteotomy is unstable at present is changed, the adaptation disease range of the distal osteotomy is expanded, and the theoretical system of the hallux valgus distal osteotomy is simplified. The design has wide application range, can be used for the operation treatment of medium and severe hallux valgus, and programs and standardizes the far-end osteotomy operation of hallux valgus, thereby being convenient for actual operation.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural view of a first metatarsal distal osteotomy plate of the present invention.

In the figure: 1. the bone plate comprises a bone plate proximal end, a transition section 2, a bone plate distal end 3, a bone plate main body 4 and a fixing hole 5.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings, and merely illustrate the basic structure of the present invention in a schematic manner, and therefore, they show only the constitution related to the present invention.

Example 1: the utility model provides a first metatarsal distal end cuts bone plate, includes cuts bone plate main part 4, cuts bone plate main part 4 and is the pure titanium and cuts the bone plate, and the thick 1.5mm of board, cuts bone plate main part 4 and adopts the design of anti-S-shaped, cuts bone plate main part 4 and comprises integrated into one piece' S cut bone plate near-end 1 and cut bone plate distal end 3 to and be used for connecting the transition section 2 of cutting bone plate near-end 1 and cut bone plate distal end 3, cuts bone plate near-end 1 and cuts bone plate distal end 3 and is equipped with two fixed orificess 5 respectively, cuts bone plate near-end 1 and cuts bone plate distal end 3 direction and the first metatarsal direction unanimity.

This embodiment osteotomy plate and set screw design are fully designed according to asian human anatomy camber, and the board is thick 1.5mm, and set screw is diameter 2.7mm locking screw or diameter 2.7mm non-locking screw or both combine, is equipped with the internal thread in the fixed orifices 5, avoids the screw notch too high, and adopts high strength material to be convenient for early function exercise of postoperative, and the osteotomy plate edge adopts hidden edge design, reduces and irritates the soft tissue.

Example 2: a first metatarsal distal end osteotomy plate comprises an osteotomy plate main body 4, wherein the osteotomy plate main body 4 is made of carbon steel, the plate thickness is 1.5mm, the osteotomy plate main body 4 adopts a reverse S-shaped design, as shown in figure 1, the osteotomy plate is composed of an osteotomy plate proximal end 1 and an osteotomy plate distal end 3 which are integrally formed, and a transition section 2 for connecting the osteotomy plate proximal end 1 and the osteotomy plate distal end 3, the osteotomy plate proximal end 1 and the osteotomy plate distal end 3 are respectively provided with three fixing holes 5 and are distributed in a shape of Chinese character 'pin', and the directions of the osteotomy plate proximal end 1 and the osteotomy plate distal end 3 are consistent with the direction of a first metatarsal.

The geometry of the osteotomy plate body 4 in space at the first metatarsal interface matches the first metatarsal surface geometry. Namely, the proximal end 1 of the osteotomy plate matches the topography of the base of the first metatarsal, the distal end 3 of the osteotomy plate matches the topography of the head of the first metatarsal, and the transition section 2 matches the topography of the shaft of the first metatarsal. The osteotomy plate is not required to be pre-bent in the operation, the operation time is greatly shortened, the osteoporosis hallux valgus patient is stably fixed, in addition, the fixing holes 5 are designed in a shape like a Chinese character 'pin', and the osteotomy block is more stably fixed after screws are placed in the fixing holes.

Example 3: a first metatarsal distal osteotomy plate comprises an osteotomy plate main body 4, wherein the osteotomy plate main body 4 is a stainless steel osteotomy plate with the plate thickness of 1.5mm, the osteotomy plate main body 4 adopts a reverse S-shaped invention, and as shown in figure 1, the osteotomy plate consists of an osteotomy plate proximal end 1 and an osteotomy plate distal end 3 which are integrally formed, and a transition section 2 for connecting the osteotomy plate proximal end 1 and the osteotomy plate distal end 3. The proximal end 1 of the osteotomy plate and the distal end 3 of the osteotomy plate are respectively provided with three fixing holes 5 which are distributed in a shape like a Chinese character 'pin', and the directions of the proximal end 1 of the osteotomy plate and the distal end 3 of the osteotomy plate are consistent with the direction of the first metatarsus.

In this embodiment, osteotomy plates of laterally different lengths may be used, with different degrees of hallux valgus deformity. The proximal end and the distal end of the osteotomy plate are fixed by three or more screws respectively, so that the osteotomy plate is more stable and firm to fix.

The osteotomy plate is the only inner fixing plate in the hallux valgus distal end osteotomy, has wide application range, can be used for correcting the moderate and severe hallux valgus surgeries, programs and standardizes the hallux valgus distal end osteotomy surgeries, is convenient for actual operation, and greatly improves the success rate of the hallux valgus surgeries and the stability of inner fixing after correction.

In the present invention, the orientation of the proximal end 1 of the osteotomy plate and the distal end 3 of the osteotomy plate may also be different from the orientation of the first metatarsal, but it is desirable to ensure that the proximal end 1 of the osteotomy plate is secured to the base of the first metatarsal and the distal end 3 of the osteotomy plate is secured to the metatarsal head of the first metatarsal.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A first distal metatarsal osteotomy plate, comprising: the bone plate comprises a reverse S-shaped bone plate main body (4), wherein the bone plate main body (4) comprises a bone plate near end (1), a bone plate far end (3) and a transition section (2) which is used for connecting the bone plate near end (1) and the bone plate far end (3) which are integrally formed, a plurality of fixing holes which are used for fixing the bone plate on a first metatarsal bone (5) are formed in the bone plate main body, the directions of the bone plate near end (1) and the bone plate far end (3) are consistent with the direction of the first metatarsal bone, the plate thickness is 1.5mm, and the transition section is matched with the surface form of the first metatarsal bone stem; and internal threads are arranged in the fixing hole (5).

2. The first distal metatarsal osteotomy plate of claim 1, wherein: the proximal end (1) of the osteotomy plate is formed by bending the tail end of the transition section (2) towards the direction vertical to the transition section (2).

3. The first distal metatarsal osteotomy plate of claim 1, wherein: the proximal end (1) of the osteotomy plate is provided with at least two fixing holes (5), and the distal end (3) of the osteotomy plate is provided with at least two fixing holes (5).

4. The first distal metatarsal osteotomy plate of claim 1, wherein: the osteotomy plate is characterized in that three fixing holes (5) are formed in the proximal end (1) of the osteotomy plate, and three fixing holes (5) are formed in the distal end (3) of the osteotomy plate.

5. The first distal metatarsal osteotomy plate of claim 4, wherein: the fixing holes (5) are distributed in a shape like a Chinese character 'pin'.

6. The first metatarsal distal osteotomy plate of any one of claims 1-5, wherein: the osteotomy plate main body is one of a stainless steel osteotomy plate, a pure titanium osteotomy plate or a carbon steel osteotomy plate.