CN102836003B - Nail puller with sliding weight - Google Patents

Abstract

The invention discloses a nail pulling pliers with a sliding hammer, which comprises an upper tong arm, a lower tong arm, an upper tong mouth and a lower tong mouth; the upper tong arm and the lower tong mouth are integrated, and the lower tong arm and the upper tong mouth are A whole body; a slide bar is arranged on the upper tong arm or the lower tong arm; a slide hammer is provided on the slide bar; a stopper is provided on the end of the slide bar away from the lower tong arm; the nail pulling pliers with the slide hammer of the present invention The pulled out nails are first loosened by the impact of the slider, and then the loose nails are pulled out; the upper tong arm is provided with a chute; the lower tong arm is provided with a swingable screw, and the screw leaves the lower tong arm One end of the clamping mechanism passes through the chute; the part of the screw that protrudes from the chute is provided with a nut that matches the screw. The teeth make this nail pulling pliers have both anti-tension friction and anti-rotation friction, so it is suitable for pulling out various types of fixing nails, which is very practical.

Description

Nail puller with sliding hammer

technical field

The invention relates to a nail-pulling pliers, in particular to a nail-pulling pliers with a sliding hammer, which is convenient for pulling out medical fixation nails fixed in bone, and belongs to the technical field of medical tools.

Background technique

When treating a fracture, the doctor usually resets the bone of the fracture and uses some special instruments to fix the fracture. During the fixation, some medical fixation nails are usually used; when the patient's bone heals, these Fixing nail removal, especially a kind of elastic nail for internal fixation, because the nail body of the fixing nail is bent in a "C" or "S" shape in the tubular bone, it is difficult to pull out by rotation, and can only be pulled out by beating. However, the currently used nail pulling pliers have only one pulling block on the body of the pliers to provide a point of force. The buckle needs to move a large displacement, which is very inconvenient to use; moreover, the tooth lines on the pliers mouth are set horizontally, and the pliers mouth only has tensile friction force, but no anti-rotation friction force. When pliers are used to extract screws, it is also difficult to play a good effect.

Contents of the invention

The purpose of the present invention is to provide a nail-pulling pliers with a sliding hammer which is convenient for pulling out the medical fixation nails fixed in the bone in order to overcome the deficiencies of the prior art. the

In order to achieve the above object, the technical solution adopted in the present invention is: a nail pulling pliers with a sliding hammer, comprising an upper pliers arm, a lower pliers arm, an upper pliers mouth, and a lower pliers mouth; the upper pliers arm and the lower pliers mouth are As a whole, the lower pliers arm and the upper pliers mouth are integrated; the connection between the upper pliers arm and the lower pliers mouth is hinged together with the connection between the lower pliers arm and the upper pliers mouth; the upper pliers arm or the lower pliers arm A pulling block is arranged on the top; a slide bar is provided on the upper tong arm or the lower tong arm; a slide hammer that can slide along the slide bar is provided on the slide bar; a block; the upper pincer arm is provided with a chute; the lower pincer arm is provided with a screw, and the other end of the screw passes through the chute; the screw can go around the connecting portion of the screw and the lower pincer arm along the chute Swing; the screw rod is provided with a nut matched with the screw rod on the part protruding from the chute.

Preferably, a connecting block is arranged on the lower pliers arm; the screw is arranged on the connecting block, and the screw can swing around the connection between the screw and the connecting block.

Preferably, the slide bar is arranged on the connecting block.

Preferably, the inner surface of the upper pliers mouth is provided with an upper pliers mouth groove along the center line; the inner surface of the lower pliers mouth is provided with a lower pliers mouth groove along the center line; the upper pliers mouth and the lower pliers mouth A plurality of upper tongs and a plurality of lower tongs are respectively arranged on the inner surface of the inner surface; the upper tongs and the lower tongs are arranged in a staggered manner.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art:

The nail-pulling pliers with sliding hammer of the present invention uses the way of sliding block impact to loosen the pulled out fixing nails first, and then pull out the loose fixing nails. This method is simple and effective; the clamping mechanism adopts nuts and The cooperation of the screw makes the positioning of the tightening more accurate and reliable; the teeth of the upper jaw and the lower jaw are provided with different directions, so that this nail pulling pliers has both tensile friction and anti-rotation friction, so It is suitable for pulling out various forms of fixing nails and is very practical.

Description of drawings

Below in conjunction with accompanying drawing, technical solution of the present invention will be further described:

Accompanying drawing 1 is the perspective view of an angle of the nail-pulling pliers with slide hammer of the present invention;

Accompanying drawing 2 is the perspective view of another angle of the nail pulling pliers with slide hammer of the present invention;

Among them: 1. Upper clamp arm; 2. Lower clamp arm; 3. Upper jaw; 4. Lower jaw; 5. Slide rod; 6. Slide hammer; 7. Block; 8. Chute; 9. Screw; 10. Nut; 11. Connecting block; 12. Pulling block; 13. Upper jaw slot; 14. Lower jaw slot. the

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Accompanying drawing 1-2 is a kind of nail-pulling pliers with slide hammer according to the present invention, comprises upper pliers arm 1, lower pliers arm 2, upper pliers mouth 3, lower pliers mouth 4; The pliers mouth 4 is a whole, and the lower pliers arm 2 and the upper pliers mouth 3 are a whole; ; The upper clamp arm 1 is provided with a pulling block 12; the lower clamp arm 2 is provided with a connecting block 11; the connecting block 11 is provided with a slide bar 5; the slide bar 5 can be wound around the slide bar 5 and The connecting part of the connecting block 11 swings; the slide bar 5 is provided with a slide hammer 6 that can slide along the slide bar 5; the end of the slide bar 5 away from the lower clamp arm 2 is provided with a stopper 7; the upper clamp The arm 1 is provided with a chute 8; the connecting block 11 is provided with a screw 9, and the screw 9 can swing along the chute 8 around the connection between the screw 9 and the connecting block 11; the other end of the screw 9 passes through the chute 8 The screw rod 9 is provided with a nut 10 matching the screw rod 9 on the part extending out of the chute 8; the inner surface of the upper jaw 3 is provided with an upper jaw groove 13 along the center line; the upper jaw The inside surface of 3 is provided with a plurality of longitudinally distributed upper jaw teeth; the inner surface of the lower jaw 4 is provided with a lower jaw groove 14 along the center line; the inner surface of the lower jaw 4 is provided with multiple horizontally distributed lower jaw teeth.

When pulling out the elastic fixing nail, clamp the tail of the pulled nail with the nail pulling pliers, place the tail of the pulled fixing nail in the upper pliers mouth groove 13 and the lower pliers mouth groove 14, adjust the screw rod 9 to a suitable angle, and turn Tighten the nut 10 so that the upper pliers mouth 3 and the lower pliers mouth 4 tighten the pulled out fixing nails; slide the sliding hammer 6 and hit the stopper 7 with the sliding hammer 6 until the pulled out fixing nails become loose, then pull the pulling block 12 to be pulled out The pins are pulled out.

When pulling out the screw, clamp the tail of the screw to be pulled with the nail puller, place the tail of the screw to be pulled in the upper jaw groove 13 and the lower jaw groove 14, adjust the screw rod 9 to a suitable angle, and tighten the nut 10 , so that the upper pliers mouth 3 and the lower pliers mouth 4 tighten the screw to be pulled out; the screw is gradually unscrewed by utilizing the anti-rotational friction force of the longitudinal upper pliers teeth in the upper pliers mouth 3 .

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art:

The nail-pulling pliers with sliding hammer of the present invention uses the impact of the slider 6 to loosen the pulled out fixing nails first, and then pull out the loose fixing nails. This method is simple and effective; the clamping mechanism adopts nuts The cooperation of 10 and screw rod 9 makes the positioning of the tightening more accurate and reliable; the upper jaw 3 and the lower jaw 4 are provided with pliers teeth with different directions, so that this nail pulling pliers has both anti-pull friction and anti-friction. Rotational friction, so it is suitable for pulling out various forms of fixing nails, which is very practical.

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present invention. Substantial equivalent changes or modifications shall fall within the protection scope of the present invention.

Claims (2)

1. A nail puller with a sliding hammer, comprising an upper pliers arm (1), a lower pliers arm (2), an upper pliers mouth (3), and a lower pliers mouth (4); the upper pliers arm (1) and The lower pliers mouth (4) is a whole, the lower pliers arm (2) and the upper pliers mouth (3) are a whole; 2) The junction with the upper pliers mouth (3) is hinged together; the upper pliers arm (1) or the lower pliers arm (2) is provided with a pulling block (12); it is characterized in that: the upper pliers arm ( 1) or the lower clamp arm (2) is provided with a slide bar (5); the slide bar (5) is provided with a slide hammer (6) that can slide along the slide bar (5); the slide bar (5) A stopper (7) is provided at the end away from the lower clamp arm (2); a chute (8) is provided on the upper clamp arm (1); a screw rod (9) is provided on the lower clamp arm (2) , the other end of the screw (9) passes through the chute (8); the screw (9) can swing along the chute (8) around the connection between the screw (9) and the lower clamp arm (2); the screw (9) A nut (10) matching the screw (9) is provided on the part protruding from the chute (8); a connecting block (11) is provided on the lower clamp arm (2); the screw (9) ) is arranged on the connecting block (11), and the screw rod (9) can swing around the connecting part of the screw rod (9) and the connecting block (11); the sliding rod (5) is arranged on the connecting block (11). 2. The nail pulling pliers with sliding hammer according to claim 1, characterized in that: the inner surface of the upper jaw (3) is provided with an upper jaw groove (13) along the center line; the lower jaw The inner surface of the mouth (4) is provided with a lower jaw groove (14) along the center line; the inner surfaces of the upper jaw (3) and the lower jaw (4) are respectively provided with a plurality of upper jaws and a plurality of jaws. There are two lower pincer teeth; the upper pincer teeth and the lower pincer teeth are distributed in a staggered manner.

Images