CN216724708U

CN216724708U - Dorsal metacarpal anatomy type bone fracture plate

Info

Publication number: CN216724708U
Application number: CN202123024342.1U
Authority: CN
Inventors: 黄琨
Original assignee: Fuzhou Second Hospital
Current assignee: Fuzhou Second Hospital
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-06-14
Anticipated expiration: 2031-12-03

Abstract

The utility model discloses a dorsal part dissection type coaptation board of metacarpus, including coaptation board main part, the coaptation board main part is the dissection type structure with dorsal part physiology radian looks adaptation of metacarpus, the coaptation board body is including laminating in dorsal vertical somatic part of metacarpus and two side direction bifurcation parts that set up in vertical somatic part distal end department and extend towards distal end side direction, be provided with a plurality of locking nail holes on the vertical somatic part, both sides all are provided with a plurality of universal screw holes to bifurcation part, both sides are configured to bifurcation part so that can laminate respectively on metacarpus distal end both sides so that walk to reserve the activity space for extensor muscle tendon, and both sides all are provided with the sharp-pointed arch that can imbed metacarpus side in order to improve the bone surface and control power on the laminating medial surface of bifurcation part. The utility model discloses because bifurcation structure can form the structure of dodging that can reserve the motion space for the extensor muscle tendon between the bifurcation portion in both sides, avoid the extensor muscle tendon to take place to rub repeatedly and then arouse inflammation scheduling problem with the coaptation board in this department.

Description

Dorsal metacarpal anatomy type bone fracture plate

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to dorsal metacarpal anatomical form coaptation board.

Background

The miniature steel plate for metacarpal fracture at present is mainly a straight plate aiming at metacarpal shaft fracture and a T plate aiming at metacarpal neck fracture, and is mostly arranged on the flat dorsal side of metacarpal and the deep surface of extensor tendon. Near the metacarpal head, the extensor tendon clings to the joint surface of the metacarpal head, the steel plate usually cannot be well jointed with the bone surface, the thickness of the steel plate is added, the extensor tendon is often irritated by the far end of the steel plate, and the extensor tendon is particularly obvious when a fist is used for bending the metacarpophalangeal joint. Especially fractures of the far end of the metacarpal bone, the steel plate has to be placed close to the far end in order to ensure that a sufficient number of screws are held at the far end of the fracture. The extensor tendon is repeatedly stretched and contracted during the functional exercise after the operation, and the distal end of the steel plate is repeatedly rubbed, so that the extensor tendon can be stimulated, and delayed fracture can occur in severe patients.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a dorsal metacarpal anatomical form coaptation board, it mainly solves current metacarpal fracture coaptation board irritates the technical problem of extensor digitorum muscle tendon easily.

In order to achieve the purpose, the utility model is realized by the following technical proposal:

the utility model provides a dorsal metacarpal anatomical form coaptation board, including coaptation board main part, the coaptation board main part is the anatomical form structure with dorsal metacarpal bone physiology radian looks adaptation, the coaptation board body is including can laminating in dorsal vertical somatic part of metacarpal bone and two side branching department that set up in vertical somatic part distal end and extend towards distal end side direction, be provided with a plurality of locking nail holes on the vertical somatic part, both sides are to all being provided with a plurality of universal screw holes on branching department, both sides are to branching department being configured to can laminate respectively on metacarpal bone distal end both sides so that walk to reserve the activity space for extensor tendon, and both sides all are provided with the sharp-pointed protrusion that can imbed metacarpal bone side in order to improve the face of bone and control power on the laminating medial surface of branching department.

Furthermore, three locking nail holes which are longitudinally arranged are arranged on the longitudinal body part.

Furthermore, a sliding pressurizing hole is also formed on the longitudinal body part.

Furthermore, two universal screw holes are formed in the lateral bifurcate parts.

Furthermore, the longitudinal body part and the two lateral fork parts are of an integrally formed Y-shaped structure.

The technical scheme has the following advantages or beneficial effects:

dorsal side anatomical form coaptation board of metacarpus in, set up two slopes to distal end direction side direction extension side direction forked portion through the distal end department at vertical somatic part, simultaneously, set up universal screw hole on the forked portion of side direction, shift the screw hole structure of distal end department to the both sides limit department of metacarpus head by original dorsal side branching, on the one hand, because forked structure can form the structure of dodging that can reserve the motion space for the extensor tendon between the forked portion in both sides, avoid the extensor tendon to take place to rub repeatedly and then arouse inflammation scheduling problem with the coaptation board in this department, on the other hand, each universal screw hole on the forked portion of accessible both sides inserts many screws that are cross arrangement towards the side of metacarpus head aslope, and then fix the metacarpus head better, the neck is in order to improve coaptation stability. In addition, all be provided with sharp-pointed protrusion on the laminating medial surface of the part that bifurcates of both sides, during the use, inside sharp-pointed protrusion on the part that bifurcates of both sides can imbed metacarpal head both sides, increases and controls power, when avoiding the screw of twist, the fracture end takes place rotatory aversion.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention.

Fig. 2 is another perspective view of the embodiment of the present invention.

Fig. 3 is a usage state diagram of the embodiment of the present invention.

Description of reference numerals:

1. longitudinal body, 2, lateral bifurcation, 3, locking nail hole, 4, universal screw hole, 5, sharp bulge, 6, sliding pressurizing hole, 7, metacarpal head.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Please refer to fig. 1 to fig. 3, an embodiment of the utility model provides a dorsal metacarpal anatomical form coaptation board, including the coaptation board main part, the coaptation board main part is the anatomical form structure with 7 dorsal side physiology radian looks adaptations of metacarpal head, the coaptation board body sets up in vertical somatic part 1 and two of 7 dorsal sides of metacarpal head in vertical somatic part 1 distal end and towards distal end side direction extension's side Y branch portion 2 including laminating, be provided with a plurality of locking nail holes 3 on the vertical somatic part 1, both sides all are provided with a plurality of universal screw holes 4 to Y branch portion 2, both sides are to Y branch portion 2 and are configured to can be laminated respectively on 7 distal end both sides of metacarpal head so that walk the activity space of reserving for extensor tendon, and both sides all are provided with sharp-pointed protrusion 5 that can imbed 7 sides of metacarpal head in order to improve the bone face and control power on the laminating medial surface of Y branch portion 2. It will be appreciated that in this embodiment, the lateral crotch portion 2 is laterally extended in the distal direction by providing two obliquely extending lateral crotch portions 2 at the distal end of the longitudinal body 1, while, compared with the common straight metacarpal dorsal bone fracture plate in the prior art, the universal screw hole 4 is arranged on the lateral bifurcation 2, the screw hole structure at the far end is transferred to two side edges of the metacarpal head 7 from the original dorsal bifurcation, on one hand, as the bifurcate structure can form an avoiding structure which can reserve a movement space for the extensor tendon between the two lateral bifurcate parts 2, the problems of inflammation and the like caused by repeated friction between the extensor tendon and the bone fracture plate at the position are avoided, on the other hand, a plurality of crossed screws can be obliquely inserted towards the side of the metacarpal head 7 through the universal screw holes 4 on the two lateral bifurcations 2, so that the metacarpal head and the neck are better fixed to improve the stability of the fracture setting. In addition, all be provided with sharp-pointed protrusion 5 on the laminating medial surface of the part 2 that bifurcates of both sides, during the use, inside sharp-pointed protrusion 5 on the part 2 that bifurcates of both sides can imbed 7 both sides of metacarpal head, increases and controls power, when avoiding screwing in the screw, the fracture end takes place rotatory displacement.

Referring to fig. 1, in a preferred embodiment, three locking nail holes 3 are formed in a longitudinal body 1. However, it will be understood by those skilled in the art that in other embodiments, the number of the locking nail holes 3 on the longitudinal body 1 is not limited to the specific embodiment disclosed in the present embodiment, and may be other numbers and arrangements as long as the longitudinal body 1 can be stably fixed on the dorsal side of the metacarpal head 7.

Referring to fig. 1, in a preferred embodiment, a sliding pressurizing hole 6 is further formed on the longitudinal body 1. It will be appreciated that by providing the longitudinal body 1 with sliding compression holes 6, the position of the bone plate in the distal and proximal positions can be adjusted as the case may be, and compression fixation can be performed if necessary.

Referring to fig. 1 and 3, in a preferred embodiment, two universal screw holes 4 are formed on both lateral bifurcations 2. However, it will be appreciated by those skilled in the art that in other embodiments, the number of universal screw holes 4 on the lateral fork 2 is not limited to the specific embodiment disclosed in the present embodiment, but may be other numbers.

Referring to fig. 1, in a preferred embodiment, the longitudinal body 1 and the two lateral crotch portions 2 are formed as an integral Y-shaped structure.

The above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; these modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention, and therefore, all other embodiments obtained by those skilled in the art without any creative effort fall within the protection scope of the present invention.

Claims

1. The utility model provides a dorsal metacarpal anatomical form coaptation board which characterized in that: including the coaptation board main part, the coaptation board main part is the anatomical form structure with metacarpal head (7) dorsal side physiology radian looks adaptation, the coaptation board body is including can laminating in the dorsal vertical somatic part (1) of metacarpal head (7) and two side direction branching department (2) that set up in vertical somatic part (1) distal end and extend towards distal end side direction, be provided with a plurality of locking nail holes (3) on vertical somatic part (1), both sides all are provided with a plurality of universal screw hole (4) on branching department (2), both sides are configured to branching department (2) and can laminate in metacarpal head (7) distal end both sides respectively so that walk to reserve the activity space for extensor tendon, and both sides all are provided with sharp-pointed protrusion (5) that can imbed metacarpal head (7) side in order to improve the bone surface and control power on the laminating medial surface of branching department (2).

2. A dorsal metacarpal anatomical bone plate according to claim 1 wherein: three locking nail holes (3) which are arranged along the longitudinal direction are arranged on the longitudinal body part (1).

3. A dorsal metacarpal anatomical bone plate according to claim 1 wherein: the longitudinal body (1) is also provided with a sliding pressurizing hole (6).

4. A dorsal metacarpal anatomical bone plate according to claim 1 wherein: two universal screw holes (4) are respectively arranged on the two lateral fork parts (2).

5. The dorsal metacarpal anatomical bone plate according to any one of claims 1 to 4, wherein: the longitudinal body part (1) and the two lateral branch parts (2) are of an integrally formed Y-shaped structure.