CN220938144U

CN220938144U - Bone needle forceps

Info

Publication number: CN220938144U
Application number: CN202321986527.7U
Authority: CN
Inventors: 王罡; 张明利
Original assignee: Zhengzhou Yihaomi Medicine Technology Co ltd
Current assignee: Zhengzhou Yihaomi Medicine Technology Co ltd
Priority date: 2023-07-26
Filing date: 2023-07-26
Publication date: 2024-05-14
Anticipated expiration: 2033-07-26

Abstract

The utility model relates to the field of orthopaedics instrument tools, in particular to a bone needle forceps. The utility model provides a bone needle forceps, includes cutting mechanism and two handles, cutting mechanism includes two relative pivoted cutting pieces, is equipped with the cutting edge that is used for cutting off the bone needle on two cutting pieces, the handle with be equipped with gear reduction mechanism between the cutting piece. When the cutting device is used, the handle drives the cutting piece to rotate relatively through the gear reduction mechanism, so that the bone needle is cut off through the cutting blade on the cutting piece, the gear reduction mechanism is adopted to increase the shearing force output by the cutting piece, and therefore an operator can cut off the bone needle without too large force, and the operation is convenient.

Description

Bone needle forceps

Technical Field

The utility model relates to the field of orthopaedics instrument tools, in particular to a bone needle forceps.

Background

In the bone surgery process, need use to cut the spicule, in the prior art, generally adopt the spicule pincers to carry out the operation of cutting off of spicule, because spicule intensity is very big, need the operator to use very big power to realize cutting off when cutting off with ordinary spicule pincers, consequently, need a convenient operation's spicule pincers.

Disclosure of utility model

The utility model provides a bone needle forceps, which aims to solve the problem that the existing bone needle forceps are inconvenient to use.

The bone needle forceps of the utility model adopts the following technical scheme:

The utility model provides a bone needle forceps, includes cutting mechanism and two handles, cutting mechanism includes two relative pivoted cutting pieces, is equipped with the cutting edge that is used for cutting off the bone needle on two cutting pieces, is equipped with gear reduction mechanism between at least one handle and one of them cutting piece.

The cutting mechanism further comprises a supporting piece, the two cutting pieces are rotatably arranged on the supporting piece, and the gear reduction mechanism is arranged between the two handles and the two cutting pieces in a one-to-one correspondence mode.

The cutting piece is of a plate type structure, a cutting groove is formed in the cutting piece, the groove wall of the cutting groove forms the cutting edge, and the gear reduction mechanism comprises a large gear arranged on the cutting piece and a small gear fixedly connected with the handle.

The distance between the cutting groove and the rotating shaft of the cutting piece is smaller than the radius of the large gear.

The cutting grooves are provided with a plurality of cutting grooves, and the cutting grooves are different in width so as to correspond to bone needles with different diameters.

The support piece comprises two support plates which are oppositely arranged, the two support plates are connected through a support column, and the cutting piece and the gear reduction mechanism are arranged between the two support plates.

The support piece is of a plate type structure, the support piece is arranged between the two cutting pieces, and the gear reduction mechanism is arranged on the support piece.

The beneficial effects of the utility model are as follows: when the bone needle forceps are used, the handle drives the cutting piece to rotate relatively through the gear reduction mechanism, so that bone needles are cut off through the cutting edge on the cutting piece, and the gear reduction mechanism is adopted to increase the shearing force output by the cutting piece, so that an operator can cut off the bone needles without too great force, and the operation is convenient.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic view showing the structure of an embodiment 1 of a bone needle forceps according to the utility model;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a left side view of FIG. 2;

FIG. 5 is a cross-sectional view taken along the direction B-B of FIG. 4;

FIG. 6 is a partial schematic view of a gear reduction mechanism;

FIG. 7 is a partial schematic view of a support;

FIG. 8 is a schematic view showing the structure of example 2 of the bone needle forceps of the utility model;

FIG. 9 is a schematic view of the support member and cutting member of FIG. 8 mated;

Fig. 1 to 7 correspond to embodiment 1, in which: 1. a handle; 2. a support; 3. cutting off the piece; 4. a pinion gear; 5. a pinion shaft; 6. a large gear shaft; 21. a support plate; 22. a support column; 31. cutting off the groove; 32. a large gear;

Fig. 8 and 9 correspond to embodiment 2, in which: 3. cutting off the piece; 7. and a support.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 7, an embodiment of the bone needle forceps of the utility model comprises a cutting mechanism and two handles, wherein the cutting mechanism comprises two cutting pieces 3 which rotate relatively, cutting edges for cutting bone needles are arranged on the two cutting pieces 3, and a gear reduction mechanism is arranged between at least one handle 1 and one cutting piece 3.

In this embodiment, the cutting mechanism further includes a support member 2, two cutting members 3 are rotatably disposed on the support member 2, and gear reduction mechanisms are disposed between the two handles 1 and the two cutting members 3 in a one-to-one correspondence. The two handles 1 can thus rotate the cutting element 3 via the gear reduction mechanisms associated with each one, so that the forces during the transmission are distributed over the two gear reduction mechanisms.

As shown in fig. 3 to 7, the cutter 3 has a plate-type structure, the cutter 3 is provided with a cutter groove 31, the groove wall of the cutter groove 31 forms a cutter blade, and the gear reduction mechanism includes a large gear 32 provided on the cutter 3 and a small gear 4 fixedly connected to the handle 1. The two cutting pieces 3 are attached and rotate, the cutting grooves 31 on the two cutting pieces are correspondingly communicated in an initial state, at the moment, bone pins are clamped in the cutting grooves 31, then force is applied to the handle 1, and the cutting grooves 31 on the two cutting pieces 3 are staggered with each other through transmission of the gear reduction mechanism, so that bone pins in the grooves are cut. In this example, in order to make the structure compact, the large gear 32 is provided in an incomplete gear structure.

In this embodiment, the distance between the cutting groove 31 and the rotating shaft of the cutting member 3 is smaller than the radius of the large gear 32, so that the cutting member 3 itself forms a primary force increasing lever, and the force increasing effect is further improved. Meanwhile, the cutting grooves 31 are provided with a plurality of cutting grooves 31, and the widths of the cutting grooves 31 are different to correspond to the bone needles with different diameters, so that the operation on the bone needles with different diameters is facilitated.

The specific structure of the support member 2 is shown in fig. 7, and includes two oppositely disposed support plates 21, the two support plates 21 being connected by a support column 22, the cutoff member 3 and the gear reduction mechanism being disposed between the two support plates 21. Specifically, in the present embodiment, three support columns 22 are provided at the left and right sides of the support member 2 and at the lower position (the position shown in fig. 7), respectively. The large gear shaft 6 is provided at an upper position of the support member 2, and the cutoff member is rotatably provided on the large gear shaft 6. The pinion shaft 5 is arranged below the large gear shaft 6, and the handle 1 and the corresponding pinion 4 are rotationally assembled on the pinion shaft 5 after being fixedly connected and meshed with the large gear on the cutting piece.

In embodiment 2 of the bone pin forceps of the utility model, as shown in fig. 8 and 9, the supporting member is of a plate type structure, the supporting member is provided between the two cutting members 3, and the gear reduction mechanism is provided on the supporting member 7. Specifically, the supporting member 7 has a long-strip plate structure, the cutting member 3 is provided with a receiving groove, the supporting member is assembled in the receiving groove, and the two pinions are symmetrically assembled at both sides of the eating support.

In other embodiments of the utility model, one of the cutting members of the cutting mechanism is fixedly connected with one of the handles, and the other cutting member and the handle are both rotatably assembled on the cutting member (the handle and the cutting member are connected through a gear reduction mechanism); the cutting edge on the cutting piece can also be arranged in a scissor shape; the gear reduction mechanism may also be provided in two or three stages.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. A bone needle forceps, characterized in that: the bone needle cutting device comprises a cutting mechanism and two handles, wherein the cutting mechanism comprises two cutting pieces which rotate relatively, cutting edges for cutting bone needles are arranged on the two cutting pieces, and a gear reduction mechanism is arranged between at least one handle and one of the cutting pieces.

2. The bone needle forceps according to claim 1, wherein: the cutting mechanism further comprises a supporting piece, the two cutting pieces are rotatably arranged on the supporting piece, and the gear reduction mechanism is arranged between the two handles and the two cutting pieces in a one-to-one correspondence mode.

3. The bone needle forceps according to claim 2, wherein: the cutting piece is of a plate type structure, a cutting groove is formed in the cutting piece, the groove wall of the cutting groove forms the cutting edge, and the gear reduction mechanism comprises a large gear arranged on the cutting piece and a small gear fixedly connected with the handle.

4. A bone needle forceps as claimed in claim 3, wherein: the distance between the cutting groove and the rotating shaft of the cutting piece is smaller than the radius of the large gear.

5. A bone needle forceps as claimed in claim 3, wherein: the cutting grooves are provided with a plurality of cutting grooves, and the cutting grooves are different in width so as to correspond to bone needles with different diameters.

6. The bone needle forceps according to claim 2, wherein: the support piece comprises two support plates which are oppositely arranged, the two support plates are connected through a support column, and the cutting piece and the gear reduction mechanism are arranged between the two support plates.

7. The bone needle forceps according to claim 2, wherein: the support piece is of a plate type structure, the support piece is arranged between the two cutting pieces, and the gear reduction mechanism is arranged on the support piece.