CN210330664U

CN210330664U - Rongeur

Info

Publication number: CN210330664U
Application number: CN201920475932.XU
Authority: CN
Inventors: 刘建国
Original assignee: Hangzhou Keruite Medical Equipment Co ltd
Current assignee: Hangzhou Keruite Medical Equipment Co ltd
Priority date: 2019-04-10
Filing date: 2019-04-10
Publication date: 2020-04-17
Anticipated expiration: 2029-04-10

Abstract

The utility model discloses a rongeur, it is main including the activity front handle, fixed back handle, it is articulated with the back spring leaf of fixing on fixed back handle to fix the preceding spring leaf on the activity front handle, screw and fixed back handle fixed connection are passed through to the one end of activity front handle, make activity front handle can the relative fixation back handle about the activity, the front end of fixed back handle sets up the connecting rod, tip sets up fixed preceding blade before the connecting rod, the push rod sets up in the connecting rod top, the push rod is connected with the activity front handle again and can the relative connecting rod about the activity simultaneously, tip sets up activity back blade before the push rod, fixed preceding blade can mutually support with activity back blade, the inside bone needle that moves back that is provided with of push rod. The utility model discloses when having guaranteed superstrong excision ability, realized again that the excision thing can drop naturally when the pincers piece opens for the operation can be in succession smooth and easy operation, to shortening the operation time, has obvious help effect in the improvement operation efficiency.

Description

Rongeur

Technical Field

The utility model relates to the field of medical equipment, concretely relates to rongeur.

Background

The rongeur is a common surgical instrument, is mainly applied to otorhinolaryngology department, neurosurgery department, orthopaedics department and bone tissue biting and cutting, and is used for cutting off harder sclerotin in the process of nasal and cranial base operation approach and tumor exposure and removal. The existing rongeur generally needs manual operation, when the rongeur is used for crushing harder bone, the cut bone is easily embedded in a jaw, so that the cut bone cannot naturally fall off, and the capability of cutting again is reduced if the bone is not manually cleaned.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a rongeur.

The purpose of the utility model is accomplished through following technical scheme: the rongeur mainly comprises a movable front handle and a fixed rear handle, wherein a front spring piece fixed on the movable front handle is hinged with a rear spring piece fixed on the fixed rear handle, one end of the movable front handle is fixedly connected with the fixed rear handle through a screw, so that the movable front handle can move left and right relative to the fixed rear handle, a connecting rod is arranged at the front end of the fixed rear handle, a fixed front cutting edge is arranged at the front end part of the connecting rod, a push rod is arranged above the connecting rod, the push rod is connected with the movable front handle and can move left and right relative to the connecting rod, a movable rear cutting edge is arranged at the front end part of the push rod, the fixed front cutting edge and the movable rear cutting edge can be matched with; the fixed front cutting edge is a bowl-shaped opening and is arranged by inclining inwards by 45 degrees, and the size of an inner ring of the fixed front cutting edge is reduced compared with that of an outer ring; the movable rear cutting edge is a bowl-shaped opening and is arranged by inclining 45 degrees inwards, and the size of the inner ring of the movable rear cutting edge is reduced compared with that of the outer ring.

Furthermore, the opening distance between the fixed front cutting edge and the movable rear cutting edge is 7mm, and a bone withdrawal needle is arranged in the movable rear cutting edge and at a position 7.5mm away from the fixed front cutting edge.

The utility model has the advantages that: the cutting-off device has the advantages that the cutting-off capacity is guaranteed, and the cutting-off objects can naturally fall off when the forceps sheets are opened, so that the operation can be continuously and smoothly performed, the operation time is shortened, and the operation efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of the structure of the fixed front cutting edge.

Fig. 3 is a schematic structural view of the movable rear cutting edge.

Fig. 4 is a schematic view of the opening size of the jaw and the bone pin removing structure.

Fig. 5 is a schematic cross-sectional view of the fixed front edge.

Figure 6 is a schematic cross-sectional view of the movable rear cutting edge.

Figure 7 is a dimension view of the bowl mouth with the fixed front edge and the movable rear edge.

Description of reference numerals: the bone removing device comprises a movable front handle 1, a fixed rear handle 2, a front spring piece 3, a rear spring piece 4, a push rod 5, a connecting rod 6, a fixed front cutting edge 7, a movable rear cutting edge 8 and a bone removing needle 9.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings:

example (b): as shown in the attached drawing, the rongeur mainly comprises a movable front handle 1 and a fixed rear handle 2, a front spring piece 3 fixed on the movable front handle 1 is hinged with a rear spring piece 4 fixed on the fixed rear handle 2, one end of the movable front handle 1 is fixedly connected with the fixed rear handle 2 through a screw, so that the movable front handle 1 can move left and right relative to the fixed rear handle 2, a connecting rod 6 is arranged at the front end of the fixed rear handle 2, a fixed front cutting edge 7 is arranged at the front end part of the connecting rod 6, a push rod 5 is arranged above the connecting rod 6, meanwhile, the push rod 5 is connected with the movable front handle 1 and can move left and right relative to the connecting rod 6, a movable rear cutting edge 8 is arranged at the front end part of the push rod 5, the fixed front cutting edge 7 and the movable rear cutting edge 8 can be matched with each other, the push rod 5 is pushed forwards to enable the movable rear cutting edge 8.

Preferably, the fixed front cutting edge 7 is a bowl-shaped opening and is inwardly inclined by 45 degrees, the height a of the cutting edge is 0.3mm, the depth B of the bowl is 0.5mm, and the size of the inner ring of the fixed front cutting edge 7 is reduced by 1mm compared with the size of the outer ring, that is, the size C of the inner ring is 3.3mm, and the size D of the outer ring is 4.3mm, so as to ensure that the resection objects cannot be embedded into the fixed front cutting edge 7.

Preferably, the movable rear cutting edge 8 is a bowl-shaped opening and is inclined inwards by 45 degrees, the height E of the cutting edge is 0.3mm, the depth F of the bowl is 1.6mm, the size of the inner ring of the movable rear cutting edge 8 is reduced by 1mm compared with that of the outer ring, the depth of the movable rear cutting edge 8 is deepened to increase the cutting amount, and the bone retreating needle 9 is arranged in the movable rear cutting edge 8 to ensure that the cut objects cannot be embedded into the movable rear cutting edge 8.

Preferably, the opening distance G between the fixed front cutting edge 7 and the movable rear cutting edge 8 is 7mm, the bone withdrawal needle 9 is arranged at the position where the distance H between the movable rear cutting edge 8 and the fixed front cutting edge 7 is 7.5mm, and the diameter I of the bone withdrawal needle 9 is 1 mm.

The utility model ensures that the resected bone can not be embedded into the bowl mouth by redesigning the structure of the rongeur, and the resected bone must naturally fall off when the jaw mouth is opened, thereby keeping good continuous resection capability; the 45-degree inclined knife edge greatly improves the stress degree of the cutting edge, ensures that the wear rate of the cutting edge is low in a long-time use state, and simultaneously enhances the cutting capacity. The size of the bowl opening of the front clamp piece is reduced in the same ratio, so that the cut object is larger than the bowl opening, and the cut object can not be embedded into the front bowl opening; the depth of the rear clamp piece is increased to increase the cutting amount, and a bone withdrawal needle is hidden to ensure that the cut object can not be embedded into the rear clamp piece.

It should be understood that equivalent substitutions or changes to the technical solution and the inventive concept of the present invention should be considered to fall within the scope of the appended claims for the skilled person.

Claims

1. A rongeur characterized by: mainly comprises a movable front handle (1), a fixed rear handle (2), a front spring leaf (3) fixed on the movable front handle (1) and a rear spring leaf (4) fixed on the fixed rear handle (2) are hinged, one end of the movable front handle (1) is fixedly connected with the fixed rear handle (2) through a screw, so that the movable front handle (1) can move left and right relative to the fixed rear handle (2), a connecting rod (6) is arranged at the front end of the fixed rear handle (2), a fixed front cutting edge (7) is arranged at the front end part of the connecting rod (6), a push rod (5) is arranged above the connecting rod (6), meanwhile, the push rod (5) is connected with the movable front handle (1) and can move left and right relative to the connecting rod (6), the front end part of the push rod (5) is provided with a movable rear cutting edge (8), the fixed front cutting edge (7) and the movable rear cutting edge (8) can be matched with each other, and the push rod (5) is internally provided with a bone withdrawal needle (9); fixed preceding blade (7) are bowl shape mouth, and slope 45 setting inwards, and the inner circle size of fixed preceding blade (7) reduces with comparing outer lane size simultaneously, blade (8) are bowl shape mouth after the activity, and slope 45 setting inwards, and the inner circle size of blade (8) reduces with comparing outer lane size after the activity simultaneously.

2. The rongeur of claim 1, wherein: the opening distance between the fixed front cutting edge (7) and the movable rear cutting edge (8) is 7mm, and a bone retreating needle (9) is arranged in the movable rear cutting edge (8) and at a distance of 7.5mm from the fixed front cutting edge (7).