CN112603455B

CN112603455B - Adjustable rongeur

Info

Publication number: CN112603455B
Application number: CN202011518771.1A
Authority: CN
Inventors: 冉建容; 许娇; 易良
Original assignee: Chinese Peoples Liberation Army Army Specialized Medical Center
Current assignee: Chinese Peoples Liberation Army Army Specialized Medical Center
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2022-10-04
Anticipated expiration: 2040-12-21
Also published as: CN112603455A

Abstract

The invention discloses an adjustable rongeur, which comprises a forceps base, a movable arm, a movable base, an adjusting mechanism and a movable handle, wherein one end of the forceps base is provided with a fixed arm, the other end of the forceps base is provided with the fixed handle, one end of the fixed arm is fixedly provided with a forceps block, and the forceps base is provided with a sliding groove; the movable arm is connected with the clamp base in a sliding way through the sliding chute, and one end of the movable arm close to the clamp block forms a clamping opening with the clamp block; the movable seat is connected with the forceps seat in a sliding way through a sliding chute; one end of the adjusting mechanism is connected with the movable arm, and the adjusting mechanism adjusts the distance between the movable arm and the movable seat; the movable handle is hinged with the forceps base, one end of the movable handle is in driving connection with the movable base, the movable handle rotates to drive the movable base to slide along the sliding groove, and then the movable arm is driven to slide along the sliding groove so as to open and close the clamping opening. Above-mentioned adjustable rongeur can adjust the biggest aperture size of centre gripping mouth for the scope increase of the bone that can the centre gripping, application scope grow, thereby the specification of rongeur that can significantly reduce selects conveniently and reduce cost.

Description

Adjustable rongeur

Technical Field

The invention relates to the field of clamping instruments, in particular to an adjustable rongeur.

Background

In the medical process, various clamps are used in various operations, wherein the rongeur is a clamp with wide application, the rongeur is a surgical instrument for biting dead bones or trimming bone stumps in the operation, and in the brain surgery operation such as craniotomy, because a plurality of broken bones are generated around the craniotomy or the opening degree is not large enough, the broken bones or bones around the opening need to be further removed by the rongeur, so that the opening is enlarged to facilitate the further operation.

The maximum opening degree of the existing rongeur is fixed, the rongeur is only suitable for bones with certain thickness, the application range is small, the specification of the rongeur is large, the selection is troublesome, and the cost is high.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides an adjustable rongeur, which aims to solve the problems that the maximum opening degree of the existing rongeur in the background art is fixed, the existing rongeur is only suitable for bones with certain thickness, the application range is small, the specification of the rongeur is multiple, the selection is troublesome and the cost is high.

In order to solve the technical problem, the technical scheme adopted by the invention is as follows:

an adjustable rongeur comprising:

the clamp comprises a clamp seat, wherein one end of the clamp seat is provided with a fixed arm, the other end of the clamp seat is provided with a fixed handle, one end of the fixed arm, which is far away from the clamp seat, is fixedly provided with a clamp block, and the clamp seat is provided with a sliding groove along the extending direction of the fixed arm;

the movable arm is connected with the clamp seat in a sliding mode through the sliding groove, and one end, close to the clamp block, of the movable arm forms a clamping opening with the clamp block;

the movable seat is connected with the forceps seat in a sliding manner through the sliding chute;

the adjusting mechanism is arranged on the movable seat, one end of the adjusting mechanism is connected with the movable arm, and the adjusting mechanism adjusts the distance between the movable arm and the movable seat; and

the movable handle is hinged to the forceps seat, an included angle is formed between the movable handle and the fixed handle, one end of the movable handle is in driving connection with the movable seat, the movable handle drives the movable seat to slide along the sliding groove, and then the movable arm is driven to slide along the sliding groove so as to open and close the clamping opening.

Above-mentioned adjustable rongeur is through changing the contained angle size between movable handle and fixed handle, and the drive sliding seat drives the digging arm and slides along the spout to open and close the centre gripping mouth, adjust the distance between digging arm and the sliding seat through adjustment mechanism, thereby adjust the maximum aperture size of centre gripping mouth, make the scope increase of the bone that can the centre gripping, application scope grow, thereby the specification of rongeur that can significantly reduce selects conveniently and reduce cost.

Further, adjustment mechanism includes the screw rod and rotates the cap, the screw rod is followed the direction screw thread that the spout extends wears to locate in the sliding seat, screw rod one end with the digging arm rotates to be connected, and the other end is equipped with and rotates the cap. The distance between the movable arm and the movable seat is adjusted through threads, the adjusting precision is high, and self-locking is achieved.

Further, the adjusting mechanism further comprises a locking nut, the locking nut is sleeved on the screw rod in a threaded mode, the locking nut is located between the rotating cap and the movable seat, and one end face of the locking nut is abutted to one end face of the movable seat. The screw rod can be prevented from loosening through the locking nut, so that the clamping is reliable.

Furthermore, an outer wrench position and an inner wrench position are arranged at one end of the rotating cap, which is far away from the screw rod. When the rotating cap cannot be screwed manually, a tool such as a wrench or an inner wrench can be adopted for screwing.

Furthermore, a gear is fixedly arranged on the movable handle, a rack is fixedly arranged on the movable seat, and the gear is meshed with the rack. The movable handle can drive the movable seat through the meshing of the gear and the rack.

Furthermore, the handle also comprises an elastic connecting piece, and two ends of the elastic connecting piece are respectively connected with the middle part of the fixed handle and the middle part of the movable handle. The fixed arm and the movable arm are connected by an elastic connecting piece, so that the movable arm can be prevented from shaking randomly.

Furthermore, the adjustable rongeur further comprises a locking screw, the locking screw is in threaded connection with the plier seat, the front end of the locking screw can be abutted to the movable handle, the locking screw is screwed in to apply force to the movable handle, and the force enables the movable handle to drive the movable arm to move towards the plier block. The locking screw may further assist in compressing the bone and locking the movable handle, relieving hand pressure and strain.

By adopting the technical scheme, compared with the prior art, the invention has the beneficial effects that:

1. the distance between the movable arm and the movable seat is adjusted through the screw rod, so that the size of the maximum opening degree of the clamping opening is adjusted, the range of the bone capable of being clamped is increased, the adjusting precision is high, the self-locking is realized, the application range is enlarged, the specification of the rongeur can be greatly reduced, and the selection is convenient and the cost is reduced.

2. The locking screw can further help to compress the bone and lock the movable handle, and the pressure and the fatigue of the hand are relieved.

3. Simple and reliable structure, flexible mechanism and strong applicability.

Drawings

In order to more clearly illustrate the embodiments of the present invention, the drawings, which are required to be used in the embodiments, will be briefly described below. The elements or parts are not necessarily drawn to scale in all figures.

FIG. 1 is a front view of the present invention;

FIG. 2 is a view of the invention from direction A;

FIG. 3 is an internal structural view of the present invention;

fig. 4 is a sectional view taken along line B-B in fig. 3.

Reference numerals are as follows:

1-a forceps base, 11-a fixed arm, 12-a fixed handle, 13-a forceps block and 1 a-a chute;

2-a movable arm;

3-movable seat, 31-rack;

4-adjusting mechanism, 41-screw rod, 42-rotating cap, 43-locking nut;

5-movable handle, 51-gear;

6-elastic connecting piece;

7-locking the screw.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

Referring to fig. 1-4, the adjustable rongeur provided by the present embodiment includes a vise base 1, a movable arm 2, a movable base 3, an adjusting mechanism 4 and a movable handle 5.

One end of the forceps base 1 is provided with a fixed arm 11, the other end of the forceps base 1 is provided with a fixed handle 12, one end of the fixed arm 11, which is far away from the forceps base 1, is fixedly provided with a forceps block 13, and the forceps base 1 is provided with a chute 1a along the extending direction of the fixed arm 11. Specifically, a through hole is formed in the forceps holder 1, an obtuse angle is formed between the fixed arm 11 and the fixed handle 12, the forceps block 13 and the fixed handle 12 are respectively located on two sides of the fixed arm 11, the sliding groove 1a is located on one side far away from the fixed handle 12, and the forceps block 13 and the sliding groove 1a are located on the same side. In this embodiment, the two side walls of the sliding groove 1a are provided with stoppers.

The movable arm 2 is connected with the forceps base 1 in a sliding mode through the sliding groove 1a, and one end, close to the forceps block 13, of the movable arm 2 forms a clamping opening with the forceps block 13. Specifically, the movable arm 2 is provided with a groove, the groove is matched with the stop block, and a guiding effect is achieved between the groove and the stop block, so that the movable arm 2 slides stably when sliding on the forceps base 1.

The movable seat 3 is connected with the forceps base 1 in a sliding way through a chute 1a. Specifically, the movable seat 3 is provided with a groove, and the groove is matched with the stop block to play a role in guiding each other, so that the movable seat 3 slides stably when sliding on the forceps holder 1.

The adjusting mechanism 4 is arranged on the movable seat 3, one end of the adjusting mechanism is connected with the movable arm 2, and the adjusting mechanism 4 adjusts the distance between the movable arm 2 and the movable seat 3. Specifically, the adjusting mechanism 4 includes a screw rod 41 and a rotating cap 42, the screw rod 41 is threaded through the movable seat 3 along the extending direction of the chute 1a, one end of the screw rod 41 is rotatably connected with the movable arm 2, and the other end is provided with the rotating cap 42. Specifically, one end of the screw 41 is rotatably connected to the movable arm 2 through a bearing. The distance between the movable arm 2 and the movable seat 3 is adjusted through threads, so that the adjusting precision is high, and self-locking is realized. Of course, the adjusting mechanism 4 may further include a lock nut 43, the lock nut 43 is threadedly sleeved on the screw rod 41, the lock nut 43 is located between the rotating cap 42 and the movable seat 3, and an end surface of the lock nut 43 abuts against an end surface of the movable seat 3. The screw 41 is prevented from loosening by the lock nut 43, so that the clamping is reliable. In order to facilitate the screwing of the screw rod 41 by a wrench, an outer wrench position and an inner wrench position may be provided at an end of the rotating cap 42 remote from the screw rod 41. When the rotatable cap 42 cannot be manually screwed, a tool such as a wrench or an internal wrench can be used for screwing.

The movable handle 5 is hinged with the forceps base 1, an included angle is formed between the movable handle 5 and the fixed handle 12, one end of the movable handle 5 is in driving connection with the movable base 3, the movable handle 5 rotates to drive the movable base 3 to slide along the sliding groove 1a, and then the movable arm 2 is driven to slide along the sliding groove 1a so as to open and close the clamping opening. Specifically, a gear 51 is fixedly arranged on the movable handle 5, a rack 31 is fixedly arranged on the movable seat 3, and the gear 51 is meshed with the rack 31. The movable handle 5 can drive the movable seat 3 through the meshing of the gear 51 and the rack 31. In this embodiment, one end of the movable handle 5 is disposed in the through hole of the forceps base 1 and hinged to the forceps base 1.

As a further optimized proposal, the adjustable rongeur can also be provided with an elastic connecting piece 6, and two ends of the elastic connecting piece 6 are respectively connected with the middle part of the fixed handle 12 and the middle part of the movable handle 5. The fixed arm 11 and the movable arm 2 are connected by the elastic connecting piece 6, so that the movable arm 2 can be prevented from shaking randomly. The elastic connection member 6 may be a spring or rubber, and a spring is used in this embodiment.

Of course, the adjustable rongeur may further include a locking screw 7, the locking screw 7 is in threaded connection with the jaw base 1, the front end of the locking screw 7 can abut against the movable handle 5, and the locking screw 7 is screwed in to apply a force to the movable handle 5, so that the movable handle 5 drives the movable arm 2 to move towards the jaw 13. The locking screw 7 may further assist in compressing the bone and locking the movable handle 5, relieving hand pressure and strain. Specifically, the two sides of the caliper seat 1 are provided with locking screws 7. In this embodiment, the locking screw 7 is disposed between the hinge of the movable handle 5 and the movable seat 3, and the locking screw 7 is screwed in to apply a force to the movable handle 5, and a component of the force drives the movable handle 5 to rotate, so as to drive the movable seat 3 to drive the movable arm 2 to approach the clamp block 13.

Referring to fig. 1-4, the adjustable rongeur is used in the following steps:

firstly, the maximum opening degree between the clamp block 13 and the movable arm 2 is adjusted according to the thickness of a bone to be clamped, the locking screw 7 is screwed down firstly during adjustment, then the locking nut 43 is opened, when the required maximum opening degree is adjusted, the locking nut 43 is screwed down, then the locking screw 7 is loosened, the movable seat 3 can freely slide, the movable handle 5 is pinched after the bone is clamped by the clamp block 13 and the movable arm 2, and the locking screw 7 is screwed down after the bone is clamped.

According to the adjustable rongeur, the distance between the movable arm 2 and the movable seat 3 is adjusted through the screw rod 41, so that the maximum opening degree of the clamping opening is adjusted, the range of bones capable of being clamped is enlarged, the adjustment precision is high, self-locking is realized, the application range is enlarged, the specification of the rongeur can be greatly reduced, the selection is convenient, and the cost is reduced; the locking screw 7 can further help to compress the bone and lock the movable handle 5, so that the pressure and the fatigue of the hand are relieved; simple structure is reliable, and the mechanism is nimble, and the suitability is strong, is worth using widely.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being covered by the appended claims and their equivalents.

Claims

1. An adjustable rongeur, comprising:

the movable seat is connected with the forceps seat in a sliding mode through the sliding chute, and a rack is fixedly arranged on the movable seat;

the adjusting mechanism is arranged on the movable seat, one end of the adjusting mechanism is connected with the movable arm, the adjusting mechanism adjusts the distance between the movable arm and the movable seat, the adjusting mechanism comprises a screw rod and a rotating cap, the screw rod is threaded in the movable seat along the extending direction of the sliding groove, one end of the screw rod is rotatably connected with the movable arm, and the other end of the screw rod is provided with the rotating cap;

the movable handle is hinged with the forceps base, an included angle is formed between the movable handle and the fixed handle, one end of the movable handle is in driving connection with the movable base, the movable handle rotates to drive the movable base to slide along the sliding groove, so that the movable arm is driven to slide along the sliding groove to open and close the clamping opening, a gear is fixedly arranged on the movable handle, and the gear is meshed with the rack; and

the locking screw is in threaded connection with the clamp seat, the front end of the locking screw can be abutted to the movable handle, the locking screw is screwed in to apply force to the movable handle, and the force enables the movable handle to drive the movable arm to move towards the clamp block.

2. The adjustable rongeur according to claim 1, wherein the adjusting mechanism further comprises a locking nut, the locking nut is sleeved on the screw in a threaded manner, the locking nut is positioned between the rotating cap and the movable seat, and one end face of the locking nut abuts against one end face of the movable seat.

3. The adjustable rongeur of claim 1, wherein an outer wrench position and an inner wrench position are provided on an end of the swivel cap remote from the screw.

4. The adjustable rongeur of claim 1 further comprising a resilient connector, both ends of the resilient connector being connected to the middle of the fixed handle and the middle of the movable handle, respectively.