CN219000520U - Fracture reduction forceps - Google Patents

Abstract

The utility model discloses a fracture reduction forceps, which comprises a main body, a fixed arm, a movable arm, a driving handle and a locking piece; the main body has a rod part and a handle connected to the lower side of the rear part of the rod part, and the front end of the rod part is provided with a first guide hole; one end of the fixed arm is fixed on the rod, the other end of the fixed arm extends forward and is provided with a first clamping part; one end of the movable arm penetrates into the first guide hole, and the other end of the movable arm extends forward and is provided with The second clamping part, the second clamping part is located at the rear of the first clamping part, a section of rack is provided at the bottom of the movable arm near the rear end, and the angle between the rod part and the front and lower part of the handle is provided with the first guide hole. The installation groove connected to the lower side of the rear part; the driving handle is arranged on the front side of the handle, and the upper end of the driving handle is installed in the installation groove through the first rotating shaft, and the upper end of the driving handle is provided with arc-shaped teeth centered on the first rotating shaft The arc tooth part is engaged with the rack; the locking piece is used to lock the driving handle. The utility model is labor-saving, convenient and reliable in operation.

Description

A kind of fracture reduction forceps

technical field

The utility model relates to the technical field of medical instruments, in particular to a fracture reduction forceps.

Background technique

In fracture surgery, it is necessary to use fracture reduction forceps for fracture reduction.

Most of the traditional fracture reduction forceps are of scissor structure, such as the fracture reduction forceps disclosed in Chinese patents CN203169279U, CN217611344U, etc. When using these scissor fracture reduction forceps for fracture reduction, it is laborious and not very convenient to operate.

Chinese patent CN211066981U discloses a medical labor-saving reset fixation forceps, although it can solve the defects of laborious and inconvenient operation of the traditional fracture reset forceps, but it realizes the push rod through the ferrule and the friction between the clamp plate and the push rod If the driving is not enough, the force to clamp and reset the fracture site may not be enough, and the reliability of the operation is not good.

Utility model content

Aiming at the defects in the prior art, the utility model provides a labor-saving, convenient and reliable fracture reduction forceps.

The utility model provides a fracture reduction forceps, comprising:

a main body, the main body has a rod part and a handle connected to the lower side of the rear part of the rod part, and the front end of the rod part is provided with a first guide hole extending backward;

a fixed arm, one end of the fixed arm is fixed to the rod part, and the other end of the fixed arm extends forward and is provided with a first clamping part;

A movable arm, one end of the movable arm penetrates into the first guide hole, the other end of the movable arm extends forward and is provided with a second clamping part, the second clamping part is located at the first clamping part At the rear of the movable arm, a section of rack is provided at the bottom of the rear end of the movable arm, and the angle between the rod and the front lower part of the handle is provided with a mounting groove communicating with the lower rear part of the first guide hole;

A driving handle, the driving handle is arranged on the front side of the handle, the end of the upper end of the driving handle is installed in the installation groove through the first rotating shaft, and the upper end of the driving handle is provided with the first rotating shaft as the center an arcuate tooth portion meshing with the rack; and,

A locking piece, the locking piece is used to lock the driving handle.

Further, the locking member includes a ratchet and a pawl, the ratchet is coaxially arranged outside the first rotating shaft and fixed on one side of the driving handle, and the pawl is installed on the Inside the handle, one end of the ratchet can engage or disengage from the ratchet.

Further, the locking member further includes an elastic member, and the elastic member is used to provide an elastic force for keeping the pawl and the ratchet engaged. One end of the second rotating shaft passes through the handle and is provided with a first knob.

Further, the elastic member is a spring that pulls back the end of the pawl away from the ratchet wheel.

Further, the front part of the first guide hole is provided with an annular groove, the outer periphery of the movable arm is provided with a retaining ring adapted to the annular groove, and the movable arm is also sleeved with a ring supported in the annular groove. The return spring between the front end and the retaining ring.

Further, the movable arm is a pipe, and the rear end of the fixed arm passes through the movable arm and is fixed to the rear end of the rod.

Further, the rear end of the rod is provided with a second guide hole extending toward the first guide hole, the rear end of the fixed arm penetrates into the second guide hole and is provided with a screw hole, the rod The rear end of the part is also rotatably installed with an adjusting screw, the front end of the screw penetrates into the second guide hole and is screwed into the screw hole, and the rear end of the adjusting screw protrudes outward and is provided with a second knob.

Further, the first clamping portion includes a first arm fixedly connected to the lower side of the rear end of the fixed arm and a first cone tip provided at the lower end of the first arm, and the second clamping portion It includes a second support arm fixedly connected to the lower side of the rear end of the movable arm and a first cone point arranged at the lower end of the second support arm, and the first cone point and the second cone point are opposite to each other.

The beneficial effects of the utility model are reflected in:

When in use, align the first clamping part at the end of the fixed arm and the second clamping part at the end of the movable arm with the two sides of the fracture site, then pull the driving handle to rotate, and the arc-shaped tooth part at the upper end of the driving handle drives the rack Move forward, and then drive the movable arm to move forward, thereby driving the second clamping part to move to the first clamping part to clamp and reset the fracture site. After the fracture site is reset, the locking part locks the driving handle, so that the first clamping part The clamping part and the second clamping part keep the fracture site clamped and fixed. Compared with the traditional scissor reset forceps, this application drives and clamps and resets the fracture site by means of a rack and pinion, which can ensure the clamping of the fracture site. Maintain the strength of reset, and the reliability of operation is better.

Description of drawings

In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the specific implementation or the prior art. Throughout the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, elements or parts are not necessarily drawn in actual scale.

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is a schematic diagram of the installation of the pawl according to the embodiment of the utility model.

In the accompanying drawings, 100-main body; 110-rod; 111-first guide hole; 112-annular groove; 113-second guide hole; 120-handle; 130-installation groove; 200-fixed arm; Clamping part; 211-first arm; 212-first cone point; 300-movable arm; 310-second clamping part; 311-second arm; 312-second cone point; 320-rack; 330-stop ring; 340-return spring; 350-screw hole; 360-adjusting screw; 361-knob; 400-drive handle; ; 520-pawl; 521-second rotating shaft; 522-second knob; 530-elastic part.

Detailed ways

Embodiments of the technical solutions of the present utility model will be described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present utility model more clearly, so they are only examples, and should not be used to limit the protection scope of the present utility model.

It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application shall have the usual meanings understood by those skilled in the art to which the present invention belongs.

As shown in FIGS. 1 and 2 , the embodiment of the present invention provides a fracture reduction forceps, which includes a main body 100 , a fixed arm 200 , a movable arm 300 , a driving handle 400 and a locking member 500 .

The main body 100 has a rod portion 110 and a handle 120 connected to the lower rear portion of the rod portion 110 , and a first guide hole 111 extending backward is provided at a front end of the rod portion 110 .

One end of the fixed arm 200 is fixed to the rod portion 110 , and the other end of the fixed arm 200 extends forward and has a first clamping portion 210 .

One end of movable arm 300 penetrates first guide hole 111, and the other end of movable arm 300 extends forward and is provided with second clamping part 310, and second clamping part 310 is positioned at the rear of first clamping part 210, and movable arm A rack 320 is provided at the bottom near the rear end of 300 , and a mounting groove 130 communicating with the rear lower side of the first guide hole 111 is provided at the angle between the rod 110 and the handle 120 .

This application mainly uses the first clamping part 210 and the second clamping part 310 to clamp the fracture site, in order to enable the first clamping part 210 and the second clamping part 310 to better clamp the fracture site Reset, and better expose the surgical field of view, the first clamping part 210 includes a first arm 211 fixedly connected to the lower side of the rear end of the fixed arm 200 and a first cone tip 212 arranged at the lower end of the first arm 211, the second The second clamping part 310 includes a second support arm 311 fixedly connected to the lower side of the rear end of the movable arm 300 and a first cone point 212 arranged at the lower end of the second support arm 311, the first cone point 212 and the second cone point 312 face each other It is provided that the first clamping part 210 and the second clamping part 310 are in contact with the bone through the first cone tip 212 and the second cone tip 312 respectively.

The driving handle 400 is arranged on the front side of the handle 120, and the end of the upper end of the driving handle 400 is installed in the installation groove 130 through the first rotating shaft 410, and the upper end of the driving handle 400 is provided with the first rotating shaft 410. 420 , the arc-shaped tooth portion 420 meshes with the rack 320 .

The locking member 500 is used to lock the driving handle 400 . Specifically, the locking member 500 includes a ratchet 510 and a pawl 520, the ratchet 510 is coaxially arranged outside the first rotating shaft 410 and fixed on one side of the driving handle 400, the ratchet 520 is installed in the handle 120 through the second rotating shaft 521, One end thereof can be engaged with or disengaged from the ratchet 510 .

When the driving handle 400 is pulled to rotate to drive the movable arm 300 to clamp the fracture site, the ratchet 510 and the pawl 520 keep meshing, and the movable arm 300 can only move forward and cannot retreat, so that the first clamping part 210 and the second clamping part 210 can be ensured. The clamping part 310 clamps the fracture site so as not to loosen, thereby temporarily fixing the fracture site. After the fracture site fixation operation is completed, the ratchet 520 is separated from the ratchet wheel 510, and the first clamping part 210 and the second clamping part 210 can be released. Part 310 clamps the fracture site.

Preferably, the locking member 500 further includes an elastic member 530, the elastic member 530 is used to provide the elastic force to keep the ratchet 520 and the ratchet 510 engaged, and one end of the second rotating shaft 521 passes through the handle 120 and is provided with a first knob 522. The elastic member 530 in this example is specifically a spring that pulls the end of the ratchet 520 away from the ratchet 510 backwards. Of course, in other embodiments, the elastic member 530 may also be a torsion spring that provides rotational torque for the ratchet 520 .

When it is necessary to separate the ratchet 520 and the ratchet 510 to unlock the clamping of the fracture site, the driving handle 400 can be pressed first to reduce the force exerted by the ratchet 520 on the ratchet 510, and then the ratchet 510 can be rotated through the first knob 522, The ratchet 520 is separated from the ratchet wheel 510, and the driving handle 400 is released, and the movable arm 300 can move backward to reset, thereby releasing the clamping of the fracture site.

More preferably, the front portion of the first guide hole 111 is provided with an annular groove 112, the outer periphery of the movable arm 300 is provided with a retaining ring 330 adapted to the annular groove 112, and the movable arm 300 is also sleeved with a ring supported in the annular groove 112. The return spring 340 between the front end of the front end and the retaining ring 330. By setting the return spring 340, after the ratchet 520 and the ratchet 510 are disengaged, the movable arm 300 can automatically move backward and reset under the action of the return spring 340, without operating the driving handle 400 to reset the movable arm 300, and the operation is more convenient.

In this embodiment, the movable arm 300 is a pipe fitting, and the rear end of the fixed arm 200 passes through the movable arm 300 and is fixed to the rear end of the rod 110, so that the structure is more compact, and the movable arm 300 and the fixed arm 200 are more stable, and the fracture site is more stable. The clamping is also more stable.

Preferably, the rear end of the rod part 110 is provided with a second guide hole 113 extending toward the first guide hole 111, the rear end of the fixed arm 200 penetrates into the second guide hole 113 and is provided with a screw hole 350, the rear end of the rod part 110 An adjusting screw 360 is also rotatably installed at the end, the front end of the adjusting screw 360 penetrates into the second guide hole 113 and is threadedly connected in the screw hole 350, and the rear end of the screw protrudes outwards and is provided with a second knob 361. When clamping and restoring the fracture site, the present application can adjust the position of the fixing arm 200 by turning the second knob 361 according to the width of the fracture site, so that the distance between the first clamping part 210 and the second clamping part 310 The clamping width is slightly larger than the width of the fracture site, thereby improving the applicability of this reduction forceps.

When using the fracture reduction forceps, respectively align the first clamping part 210 at the end of the fixed arm 200 and the second clamping part 310 at the end of the movable arm 300 on both sides of the fracture site, and then pull the driving handle 400 to rotate, and the driving handle 400 The arc-shaped tooth part 420 at the upper end drives the rack 320 to move forward, and then drives the movable arm 300 to move forward, thereby driving the second clamping part 310 to move to the first clamping part 210 to clamp and reset the fracture site, and the fracture site After the site is reset, the locking member 500 locks the driving handle 400, so that the first clamping part 210 and the second clamping part 310 keep clamping and fixing the fracture site. Compared with the traditional scissor reset forceps, this application adopts gear teeth The way of strip 320 is used to drive and clamp and reset the fracture site, which can ensure the strength of clamping and reseting the fracture site, and the reliability of the operation is better.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand : It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the various embodiments of the present invention The scope of the technical solution shall be included in the scope of the claims and description of the present utility model.

Claims (8)

1. A kind of fracture reduction forceps, is characterized in that, comprises: a main body, the main body has a rod part and a handle connected to the lower side of the rear part of the rod part, and the front end of the rod part is provided with a first guide hole extending backward; a fixed arm, one end of the fixed arm is fixed to the rod part, and the other end of the fixed arm extends forward and is provided with a first clamping part; A movable arm, one end of the movable arm passes through the first guide hole, the other end of the movable arm extends forward and is provided with a second clamping part, the second clamping part is located at the first clamping part At the rear of the movable arm, a section of rack is provided at the bottom of the rear end of the movable arm, and the angle between the rod and the front lower part of the handle is provided with a mounting groove communicating with the lower rear part of the first guide hole; A driving handle, the driving handle is arranged on the front side of the handle, the end of the upper end of the driving handle is installed in the installation groove through the first rotating shaft, and the upper end of the driving handle is provided with the first rotating shaft as the center an arcuate tooth portion meshing with the rack; and, A locking piece, the locking piece is used to lock the driving handle. 2. fracture reduction forceps according to claim 1, is characterized in that, The locking member includes a ratchet and a pawl, the ratchet is coaxially arranged outside the first rotating shaft and fixed on one side of the driving handle, the pawl is installed in the handle through the second rotating shaft, One end thereof can be engaged with or disengaged from the ratchet. 3. fracture reduction forceps according to claim 2, is characterized in that, The locking member further includes an elastic member, the elastic member is used to provide an elastic force for keeping the pawl and the ratchet engaged, and one end of the second rotating shaft passes through the handle and is provided with a first knob. 4. fracture reduction forceps according to claim 3, is characterized in that, The elastic member is a spring that pulls back the end of the pawl away from the ratchet wheel. 5. fracture reduction forceps according to claim 3, is characterized in that, The front part of the first guide hole is provided with an annular groove, the outer periphery of the movable arm is provided with a retaining ring adapted to the annular groove, and the movable arm is also sleeved with a front end supported on the annular groove and a Return spring between retaining rings. 6. fracture reduction forceps according to claim 1, is characterized in that, The movable arm is a pipe, and the rear end of the fixed arm passes through the movable arm and is fixed to the rear end of the rod. 7. fracture reduction forceps according to claim 6, is characterized in that, The rear end of the rod is provided with a second guide hole extending toward the first guide hole, the rear end of the fixed arm penetrates into the second guide hole and is provided with a screw hole, the rear of the rod An adjusting screw is also rotatably installed at the end, the front end of the screw penetrates into the second guide hole and is threadedly connected in the screw hole, and the rear end of the adjusting screw protrudes outward and is provided with a second knob. 8. fracture reduction forceps according to claim 1, is characterized in that, The first clamping part includes a first support arm fixedly connected to the lower side of the rear end of the fixed arm and a first cone tip provided at the lower end of the first support arm, and the second clamping part comprises a fixed connection The second support arm on the lower side of the rear end of the movable arm and the first cone point arranged at the lower end of the second support arm, the first cone point and the second cone point are arranged opposite to each other.

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