CN219207257U

CN219207257U - Point tooth combination metacarpal fracture reduction forceps

Info

Publication number: CN219207257U
Application number: CN202223203343.7U
Authority: CN
Inventors: 郭振国; 陈奇鸣; 李澜萱; 景凯
Original assignee: Huizhou Central People's Hospital
Current assignee: Huizhou Central People's Hospital
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2023-06-20
Anticipated expiration: 2032-12-01

Abstract

The utility model discloses a pair of point-tooth combined metacarpal fracture reduction forceps, relates to the technical field of orthopedic medical instruments, and in particular relates to a pair of point-tooth combined metacarpal fracture reduction forceps which comprises a first forceps part and a second forceps part which are hinged together in a crossed mode. When the bone block of the patient with the metacarpal fracture shifts up and down, the spine end of the second curved arm is inserted from the operation incision at the back of the hand of the patient with the metacarpal fracture, the spine end of the second curved arm is tightly clung to the metacarpal of the fracture of the patient and pierces into the lower side of the metacarpal, and the second curved arm hooks the shifted bone block from the lower side. The finger drives the first lantern ring and the second lantern ring to be close to each other, so that the spike end of the first bent arm is driven to abut against the bone block which is not shifted from the upper side, the shifted bone block is reset, the operation is simple, and the operation wound is small. The technical scheme is mainly used for the replacement bone block reduction of the patient with the metacarpal fracture, and solves the problem that the upper side and the lower side of the bone block of the patient with the metacarpal fracture are inconvenient to replace.

Description

Point tooth combination metacarpal fracture reduction forceps

Technical Field

The utility model relates to the technical field of orthopedic medical instruments, in particular to a pair of point-tooth combined metacarpal fracture reduction forceps.

Background

Clinically, when a patient with metacarpal fracture displacement is operated, the back of the hand of the patient is always upwards, the skin of the patient is cut downwards from the back of the hand, soft tissues are separated, fracture parts are exposed, when the bone displacement direction of the patient is the left side and the right side of the palm, a large-size straight hemostatic forceps is adopted to clamp the displaced bone blocks and the bone blocks at the normal positions at the same time, and the displaced bone blocks are gradually clamped by applying force, so that the displaced bone blocks are reset. However, the bone pieces at the fracture of part of the patient are displaced in the upper and lower sides of the palm, and the space between the adjacent metacarpals is small, so that the operation space is limited, and the hemostatic forceps are inconvenient to clamp the bone pieces at the upper and lower sides for reduction, which causes great trouble to doctors and patients.

Disclosure of Invention

The utility model aims to provide a pair of point tooth combined metacarpal fracture reduction forceps, which solves the problem that the upper side and the lower side of a bone block of a metacarpal fracture patient are inconvenient to displace and reduce.

The technical aim of the utility model is realized by the following technical scheme: the utility model provides a point tooth combination metacarpal fracture reduction pincers, includes first clamping portion, second clamping portion, first clamping portion is X shape cross hinge with the second clamping portion, the one end of first clamping portion is equipped with first curved boom, the one end of second clamping portion is equipped with the second curved boom, the one end of first curved boom and second curved boom is sharp thorn form, the sharp thorn end of first curved boom is perpendicular with the tangent line of second curved boom center department, the first lantern ring of other end fixedly connected with of first clamping portion, the other end fixedly connected with second lantern ring of second clamping portion.

The principle and effect of the technical scheme are as follows: the doctor inserts the spine end of the second bent arm from the operation incision at the back of the hand of the patient with the metacarpal fracture through holding the first collar and the second collar, the spine end of the second bent arm is tightly stuck to the metacarpal of the fracture of the patient to be penetrated, and the second bent arm hooks the shifted bone blocks from the lower side. The finger drives the first lantern ring to be close to the second lantern ring, so that the spike end of the first bent arm is driven to abut against the bone block which is not shifted from the upper side, and the shifted bone block is reset, and the effect that the shifted bone block can be conveniently reset when being shifted upwards or downwards is achieved.

The utility model is further characterized in that the second clamp part is fixedly connected with an arc-shaped rack positioned at one end of the second sleeve ring, the first clamp part is provided with a limiting component positioned at one end of the second sleeve ring, and the limiting component is used for mutually fixing the first clamp part and the arc-shaped rack.

Through adopting above-mentioned technical scheme, when the spine end of first curved boom and second curved boom support the bone piece that will shift with the bone piece that does not shift each other tightly, fix first pincers portion and arc rack each other through spacing subassembly to fix first pincers portion and second pincers portion each other, and then make the spine end of first curved boom keep the bone piece that will shift with the state that does not shift bone piece and support each other tightly with the second curved boom, reach and need not the doctor and keep gripping first lantern ring and the effect that second lantern ring also can temporarily fix the bone piece that shifts each other, the doctor of being convenient for carries out follow-up bone piece fixation operation.

The utility model further provides that the limiting assembly comprises a rectangular groove, a circular groove and an arc hole, wherein the rectangular groove is formed in the first clamp part, the arc hole is used for enabling the arc rack to slide, the rectangular groove is connected with a roller in a rotating mode, the circular groove is connected with a limiting pin in a sliding mode, a spring is arranged between the limiting pin and the circular groove, the roller abuts against the side face of the limiting pin, and the free end of the limiting pin is inserted into a tooth groove of the arc rack.

By adopting the technical scheme, when in operation, the thumb of a doctor is inserted into the second lantern ring, and the middle finger is inserted into the first lantern ring. The arc-shaped rack is blocked by the limiting pin, so that the arc-shaped rack can only move from the second lantern ring to one side of the first lantern ring, and the doctor is replaced by continuously grasping the first lantern ring and the second lantern ring to keep temporary fixation of the movable bone block. When the temporary fixing of the movable bone block is required to be withdrawn, the idler wheel is stirred by the index finger of the doctor, the idler wheel drives the limiting pin to move into the circular groove, and the spring is compressed. The limiting pin is pulled out of the tooth groove of the arc-shaped rack, so that the limitation on the arc-shaped rack is eliminated. The doctor drives the first lantern ring to be far away from the second lantern ring through the finger, so that the first bent arm is driven to be far away from the second bent arm. After the first bent arm and the second bent arm are far away from each other to a certain distance, the middle finger of a doctor releases the idler wheel, the limiting pin is reset under the action of the elastic force of the spring, and the limiting pin is inserted into the tooth slot of the arc-shaped rack, so that the arc-shaped rack and the first clamp part are fixed together. The effect that the first forceps part and the second forceps part can be fixed by replacing a doctor to continuously hold the first lantern ring and the second lantern ring and can be operated by one hand is achieved.

The utility model is further arranged that the inner side of the second bent arm is provided with anti-slip teeth.

By adopting the technical scheme, the second curved arm clamps the bones of the metacarpals more stably through the anti-slip teeth.

The utility model is further arranged that corrugated bulges are arranged on one side of the limiting pin, which is close to the roller, and the arc-shaped surface of the roller.

Through adopting above-mentioned technical scheme, the bellow is protruding to have increased the frictional force between spacer pin and the gyro wheel to reach and increase spacer pin and gyro wheel to between the transmission effect.

In summary, the utility model has the following beneficial effects: the bone pieces displaced up and down can be reduced and temporarily fixed without making wider incisions on both sides of the metacarpal bone at the fracture site. When the fixation of the bone blocks is canceled, the operation can be performed by one hand, and the method is simple and convenient.

Drawings

FIG. 1 is a front view of an embodiment;

FIG. 2 is a cross-sectional view of an embodiment;

fig. 3 is an enlarged view at a in fig. 2.

In the figure: the first clamping part 1, the second clamping part 2, the first bent arm 3, the second bent arm 4, the first lantern ring 5, the second lantern ring 6, the arc-shaped rack 7, the rectangular groove 8, the roller 9, the limiting pin 10, the spring 11 and the anti-skid tooth 12.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

A point tooth combined metacarpal fracture reduction forceps, as shown in fig. 1-2, comprises a first forceps part 1 and a second forceps part 2, wherein the first forceps part 1 and the second forceps part 2 are in X-shaped cross hinge joint. The upper end integrated into one piece of first portion of pincers 1 has first curved boom 3, and the upper end integrated into one piece of second portion of pincers 2 has second curved boom 4, and second curved boom 4 is the arc that fits patient's metacarpal radian, and the inboard of second curved boom 4 is equipped with anti-skidding tooth 12 along length direction equidistance interval, and the upper end of first curved boom 3 and second curved boom 4 is the spike form. The sharp end of the first bent arm 3 is perpendicular to the tangent line at the center of the second bent arm 4, and the lower end of the first clamp part 1 is fixedly connected with a first lantern ring 5. The lower end of the second clamp part 2 is fixedly connected with a second lantern ring 6, and the distances between the circle centers of the first lantern ring 5 and the second lantern ring 6 and the hinge point of the first clamp part 1 and the second clamp part 2 are equal. The lower end of the second clamp part 2 is fixedly connected with an arc-shaped rack 7, the arc-shaped rack 7 is arc-shaped, and the arc center coincides with the hinging point of the first clamp part 1 and the second clamp part 2. The lower extreme of first portion of pincers 1 is equipped with the spacing subassembly that is located the upside of first lantern ring 5, and spacing subassembly is used for fixing each other between first portion of pincers 1 and the arc rack 7.

As shown in fig. 3, the limiting assembly comprises a rectangular groove 8, a circular groove and an arc hole for sliding the arc rack 7, wherein the rectangular groove and the circular groove are formed in the first clamp part 1. The arc-shaped holes penetrate through the left side and the right side of the first clamp part 1, and the sizes of the arc-shaped holes are matched with the sizes of the arc-shaped racks 7. The opening of rectangle recess 8 is towards the left side of first portion of pincers 1, and the downside and the arc hole intercommunication of rectangle recess 8, and rectangle recess 8 internal rotation is connected with gyro wheel 9, and the left side of gyro wheel 9 is located rectangle recess 8 outward. The opening of the rectangular groove 8 faces the lower end of the first clamp part 1, and the opening of the rectangular groove 8 is communicated with the rectangular groove 8. The round groove is slidably connected with a limiting pin 10, a spring 11 is arranged between the limiting pin 10 and the round groove, the right side of the roller 9 is propped against the left side of the limiting pin 10, and the lower end of the limiting pin 10 is inserted into a tooth slot of the arc-shaped rack 7. The left side of the limiting pin 10 and the arc-shaped surface of the roller 9 are provided with corrugated bulges.

Working principle: during the surgical operation, the thumb of the doctor is inserted into the second collar 6 and the middle finger is inserted into the first collar 5. The doctor inserts the pointed end of the second bent arm 4 from the operation incision at the back of the hand of the patient with metacarpal fracture by holding the first collar 5 and the second collar 6, the pointed end of the second bent arm 4 is stuck against the metacarpal bone of the fracture of the patient to be penetrated, and the second bent arm 4 hooks the displaced bone pieces from the lower side. The finger drives the first lantern ring 5 and the second lantern ring 6 to be close to each other, so that the spike end of the first bent arm 3 is driven to abut against an unshifted bone block from the upper side, and the shifted bone block is reset. When the sharp end of the first bent arm 3 and the second bent arm 4 together press the displaced bone piece and the non-displaced bone piece against each other, the arc-shaped rack 7 is blocked by the limiting pin 10, so that the arc-shaped rack 7 can only move from the second collar 6 towards the first collar 5 side, thereby replacing a doctor to continuously grip the first collar 5 and the second collar 6 to keep temporary fixation of the displaced bone piece. When the temporary fixing of the movable bone block needs to be withdrawn, the idler wheel 9 is stirred by the index finger of a doctor, the idler wheel 9 drives the limiting pin 10 to move into the circular groove, and the spring 11 is compressed. The limit pin 10 is drawn out from the tooth slot of the arc-shaped rack 7, thereby releasing the limit on the arc-shaped rack 7. The doctor drives the first collar 5 away from the second collar 6 by a finger, thereby driving the first curved arm 3 away from the second curved arm 4. After the first bent arm 3 and the second bent arm 4 are far away from each other to a certain distance, the middle finger of a doctor releases the idler wheel 9, the limiting pin 10 is reset under the action of the elastic force of the spring 11, and the limiting pin 10 is inserted into the tooth slot of the arc-shaped rack 7, so that the arc-shaped rack 7 and the first clamp part 1 are fixed together. The second curved arm 4 clamps the bones of the metacarpal bone more stably by the anti-slip teeth 12. The corrugated bulges increase the friction force between the limiting pin 10 and the roller 9, so that the transmission effect between the limiting pin 10 and the roller 9 is better.

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.

Claims

1. The utility model provides a point tooth combination metacarpal fracture reduction pincers, includes first pincers portion (1), second pincers portion (2), its characterized in that: the novel clamping device is characterized in that the first clamping part (1) is in X-shaped cross hinge joint with the second clamping part (2), a first bent arm (3) is arranged at one end of the first clamping part (1), a second bent arm (4) is arranged at one end of the second clamping part (2), the first bent arm (3) and one end of the second bent arm (4) are in a spike shape, the spike end of the first bent arm (3) is perpendicular to a tangent line at the center of the second bent arm (4), a first lantern ring (5) is fixedly connected to the other end of the first clamping part (1), and a second lantern ring (6) is fixedly connected to the other end of the second clamping part (2);

the second clamp part (2) is fixedly connected with an arc-shaped rack (7) positioned at one end of the second sleeve ring (6), the first clamp part (1) is provided with a limiting assembly positioned at one end of the second sleeve ring (6), and the limiting assembly is used for mutually fixing the first clamp part (1) and the arc-shaped rack (7);

the limiting assembly comprises a rectangular groove (8) formed in the first clamp portion (1), a circular groove and an arc hole for enabling the arc rack (7) to slide, a roller (9) is rotationally connected in the rectangular groove (8), a limiting pin (10) is slidably connected in the circular groove, a spring (11) is arranged between the limiting pin (10) and the circular groove, the roller (9) abuts against the side face of the limiting pin (10), and the free end of the limiting pin (10) is inserted into a tooth slot of the arc rack (7).

2. A combination metacarpal fracture reduction forceps as claimed in claim 1, wherein: the inner side of the second bent arm (4) is provided with anti-slip teeth (12).

3. A combination metacarpal fracture reduction forceps as claimed in claim 1, wherein: and corrugated bulges are arranged on one side of the limiting pin (10) close to the roller (9) and the arc-shaped surface of the roller (9).