CN204410951U - A kind of first metatarsal osteotomy of distal plate - Google Patents

Abstract

This utility model relates to technical field of medical instruments, especially a kind of first metatarsal osteotomy of distal plate, it comprises a reverse-s shape and cuts plate body, described section of plate body comprises integrated osteotomy plate near-end, osteotomy plate far-end and the changeover portion for connecting osteotomy plate near-end and osteotomy plate far-end, described section of plate body is provided with several for osteotomy plate being fixed on the fixing hole on first metatarsal, and described osteotomy plate near-end is consistent with first metatarsal direction with osteotomy plate distal direction.The first metatarsal osteotomy of distal plate that this utility model provides, make osteotomy fixing-stable reliable, adopt steel plate design, intensity is large, is conducive to early functional exercise, shortens post-operative recovery time, and also plays better fixation for osteoporosis intoe; Employing concealed edges designs, and reduces soft tissue irritation; Employing anatomical form designs, and is convenient to anatomical reduction after osteotomy, without the need in art again to steel plate pre-bending.

Description

A kind of first metatarsal distal end osteotomy plate

technical field

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

Background technique

Hallux valgus is a common foot disease that rarely attracts people's attention at the early stage of the disease, but with time and age, hallux valgus can gradually aggravate, and finally clinical symptoms appear. The main manifestations of the patient are pain and swelling at the bunion, and difficulty in wearing shoes and walking, which seriously affects the daily life of the patient. At this point, the deformity can be corrected surgically.

At present, the most commonly used surgical method in clinic is Chevron, that is, the distal first metatarsal osteotomy. After the osteotomy was completed, the first metatarsal head was extrapolated to a satisfactory position and fixed with screws. However, the strength of screw fixation is not enough, especially for osteoporosis patients, it is easy to cause the postoperative fixation position to be lost, early functional exercise cannot be performed after the operation, and the recovery time of the operation is long, which eventually leads to the failure of the operation.

Utility model content

The technical problem solved by the utility model is: the utility model provides a first metatarsal distal osteotomy plate, which is used to solve the problem of poor stability of screw fixation after the first metatarsal distal osteotomy. The osteotomy plate is designed as a plate with an inverted S shape. The osteotomy plate is fixed on the first metatarsal with screws to improve the strength and stability of internal fixation after osteotomy.

The technical scheme that the utility model solves its technical problem adopts is:

A first metatarsal distal osteotomy plate, comprising a reverse S-shaped osteotomy plate main body, the osteotomy plate main body includes an integrally formed osteotomy plate proximal end, an osteotomy plate distal end and a proximal end for connecting the osteotomy plate end of the osteotomy plate and the transition section of the distal end of the osteotomy plate, the main body of the osteotomy plate is provided with several fixing holes for fixing the osteotomy plate on the first metatarsal, the proximal end of the osteotomy plate and the distal end of the osteotomy plate The direction of the end is consistent with the direction of the first metatarsal, and is used to fix the osteotomy plate on the first metatarsal, and the direction of the proximal end of the osteotomy plate and the distal end of the osteotomy plate are consistent with the direction of the first metatarsal.

Specifically, the spatial geometry of the contact surface between the osteotomy plate and the first metatarsal matches the surface shape of the first metatarsal. It makes the fixation more stable, and there is no need to bend the osteotomy plate through screws during the operation, and there is no need to pre-bend it before the operation, which avoids further damage to the bone during screw fixation due to the inconsistency of the osteotomy plate, and even Fractures of the first metatarsal bone occur, especially in patients with osteoporosis, which facilitates surgery and shortens the operation time.

Specifically, at least two fixing holes are provided on the proximal end of the osteotomy plate, and at least two fixing holes are provided on the distal end of the osteotomy plate, and the two ends of the osteotomy plate are fixed to minimize the stress on the osteotomy plate.

Specifically, three fixation holes are arranged on the proximal end of the osteotomy plate, distributed in a zigzag shape. The fixing hole is designed in a zigzag shape to make the screw fixing more stable and reliable. Specifically, the fixing hole is provided with an internal thread, the upper part of the fixing hole is tapered, and the fixing screw cap is completely matched with the tapered shape.

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

The beneficial effects of the utility model are: the utility model provides a first metatarsal distal osteotomy plate, which makes the fixation after osteotomy more stable and reliable. Steel plate design, high strength, is conducive to early functional exercise, shortens postoperative recovery time, and also plays a good role in fixing osteoporotic hallux valgus; adopts hidden edge design to reduce soft tissue stimulation; osteotomy plate adopts anatomical The design is convenient for anatomical reduction after osteotomy, and there is no need to pre-bend the plate during the operation; the plate fixes the distal bone fragments through different lateral extension lengths to solve different degrees of hallux valgus deformity, and multiple screws fix the distal bone fragments , making osteotomy fixation more stable and reliable; changing the current situation of unstable internal fixation in distal hallux valgus osteotomy, expanding the scope of indications for distal osteotomy, and simplifying distal hallux valgus osteotomy theoretical system. This design has a wide range of applications, and can be used for the surgical treatment of moderate and severe hallux valgus. Moreover, the distal osteotomy of hallux valgus is programmed and standardized, and is convenient for actual operation.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

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

In the figure: 1. The proximal end of the osteotomy plate, 2. The transition section, 3. The distal end of the osteotomy plate, 4. The main body of the osteotomy plate, 5. The fixation hole.

Detailed ways

The utility model is described in further detail in conjunction with accompanying drawing now. These drawings are all simplified schematic diagrams, and only schematically illustrate the basic structure of the utility model, so they only show the configurations related to the utility model.

Embodiment 1: An osteotomy plate at the distal end of the first metatarsal bone, comprising a main body 4 of the osteotomy plate. The main body 4 of the osteotomy plate is a pure titanium osteotomy plate with a plate thickness of 1.5mm. The main body of the osteotomy plate adopts a reverse S-shaped design, The main body 4 of the osteotomy plate is composed of an integrally formed proximal end 1 of the osteotomy plate and a distal end 3 of the osteotomy plate, and a transition section 2 for connecting the proximal end 1 of the osteotomy plate and the distal end 3 of the osteotomy plate. The end 1 and the distal end 3 of the osteotomy plate are respectively provided with two fixing holes 5, 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 metatarsal bone.

The design of the osteotomy plate and fixing screws in this embodiment is fully based on the curvature design of Asian human anatomy. The thickness of the plate is 1.5mm. The screw thread avoids too high screw notch, and the high-strength material is used to facilitate early functional exercise after operation. The edge of the osteotomy plate is designed with a hidden edge to reduce soft tissue stimulation.

Embodiment 2: An osteotomy plate at the distal end of the first metatarsal bone, comprising a main body 4 of the osteotomy plate, the main body of the osteotomy plate is a carbon steel osteotomy plate with a plate thickness of 1.5mm, and the main body of the osteotomy plate adopts a reverse S-shaped design, As shown in Figure 1, the osteotomy plate is composed of an integrally formed proximal end 1 of the osteotomy plate, a distal end 3 of the osteotomy plate, and a transition section 2 for connecting the proximal end 1 of the osteotomy plate and the distal end 3 of the osteotomy plate, 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 zigzag shape. 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 metatarsal bone.

In this embodiment, the spatial geometry of the contact surface between the osteotomy plate main body 4 and the first metatarsal is matched with the surface shape of the first metatarsal. That is, the proximal end 1 of the osteotomy plate matches the surface morphology of the metatarsal base of the first metatarsal, the distal end 3 of the osteotomy plate matches the surface morphology of the metatarsal head of the first metatarsal, and the transition section 2 matches the surface morphology of the first metatarsal shaft. It makes it unnecessary to pre-bend the osteotomy plate during the operation, which greatly shortens the operation time. At the same time, it also plays a more stable fixation for osteoporotic hallux valgus patients. In addition, the fixation hole 5 adopts a square design, and the osteotomy block is fixed after the screw is inserted. Fixing is more stable.

Embodiment 3: An osteotomy plate at the distal end of the first metatarsal bone, including a main body 4 of the osteotomy plate. The main body 4 of the osteotomy plate is a stainless steel osteotomy plate with a plate thickness of 1.5mm. The main body of the osteotomy plate adopts a reverse S-shaped utility model, As shown in FIG. 1 , the osteotomy plate is composed of an integrally formed proximal end 1 of the osteotomy plate, a distal end 3 of the osteotomy plate, and a transition section 2 for connecting the proximal end 1 of the osteotomy plate and the distal end 3 of the osteotomy plate. 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 zigzag shape. 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 metatarsal bone.

In this embodiment, for different degrees of hallux valgus deformities, osteotomy plates with different lateral extension lengths can be selected. The proximal end and the distal end of the osteotomy plate are respectively fixed with three or more screws to make the fixation of the osteotomy plate more stable and reliable.

The osteotomy plate in this utility model is the only internal fixation plate in the distal hallux valgus osteotomy orthopedic surgery. Osteotomy surgery is stylized, standardized, and easy to operate, which greatly improves the success rate of hallux valgus surgery and the stability of internal fixation after orthopedic surgery.

In the present utility model, the directions of the proximal end 1 of the osteotomy plate and the distal end 3 of the osteotomy plate may also be inconsistent with the direction of the first metatarsal, but it is necessary to ensure that the proximal end 1 of the osteotomy plate is fixed on the base of the first metatarsal, and that the distal end of the osteotomy plate is End 3 is fixed to the metatarsal head of the first metatarsal.

Inspired by the above ideal embodiment according to the utility model, through the above description content, relevant staff can completely make various changes and modifications within the scope of not deviating from the technical idea of the utility model. The technical scope of this utility model is not limited to the content in the description, but must be determined according to the scope of the claims.

Claims (7)

1. A first metatarsal distal end osteotomy plate, characterized in that: it comprises a reverse S-shaped osteotomy plate main body (4), and the osteotomy plate main body (4) includes an integrally formed osteotomy plate proximal end (1 ), the distal end of the osteotomy plate (3) and the transition section (2) used to connect the proximal end of the osteotomy plate (1) and the distal end of the osteotomy plate (3). For fixing the osteotomy plate to the fixing hole on the first metatarsal (5), the direction of the proximal end (1) of the osteotomy plate and the distal end (3) of the osteotomy plate is consistent with the direction of the first metatarsal. 2. The first distal metatarsal osteotomy plate according to claim 1, characterized in that: the proximal end (1) of the osteotomy plate is the end of the transition section (2) that is perpendicular to the transition section (2) ) direction bending formation. 3. The first metatarsal distal osteotomy plate according to claim 1, characterized in that: at least two fixing holes (5) are provided on the proximal end (1) of the osteotomy plate, and the distal end of the osteotomy plate is The end (3) is provided with at least two fixing holes (5). 4. The first metatarsal distal osteotomy plate according to claim 3, characterized in that: the proximal end of the osteotomy plate (1) is provided with three fixing holes (5), and the distal end of the osteotomy plate ( 3) There are three fixing holes (5) on it. 5. The osteotomy plate for the distal end of the first metatarsal bone according to claim 4, characterized in that: the fixing holes (5) are distributed in a zigzag shape. 6. The first distal metatarsal osteotomy plate according to claim 1, characterized in that: said fixing hole (5) is provided with an internal thread. 7. The first distal metatarsal osteotomy plate according to any one of claims 1 to 6, wherein the main body of the osteotomy plate is a stainless steel osteotomy plate, a pure titanium osteotomy plate or a carbon steel osteotomy plate One of the boards.