Nail holding forceps for orthopedic surgery

Abstract

The utility model discloses a nail holding forceps for orthopedic surgery, which belongs to the technical field of medical instruments and comprises a left forceps arm, a right forceps arm and a pin, the middle of the left forceps arm and the middle of the right forceps arm are hinged through the pin, the front end of the left forceps arm and the front end of the right forceps arm are bent upwards and are fixedly provided with hollow semi-cylinders, and the tail end of the left forceps arm and the tail end of the right forceps arm are fixedly provided with finger rings. A locking assembly is arranged between the left forceps arm and the right forceps arm, and a pressurizing assembly is arranged on the locking assembly; the left plier arm and the right plier arm are automatically tensioned and locked through the locking assembly, so that the situation that the left plier arm and the right plier arm need to be held by hands all the time is avoided, manpower is saved, the unlocking operation of the left plier arm and the right plier arm can be more labor-saving and convenient through the cambered surface locking structure of the locking assembly, meanwhile, abrasion of locking parts is greatly reduced, and the working efficiency is improved. The service life of the part is prolonged, the locking assembly is pressed and limited through the arranged pressurizing assembly, and therefore the locking stability of the locking assembly is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially is concerned with a kind of nail holding forceps for orthopedics surgery. BACKGROUND

[0002] Orthopedic instruments generally refer to professional medical instruments specially used for orthopedic surgery, which are classified into three categories according to the classification of the State Food and Drug Administration: Category I, Category II and Category III, and are mainly divided into orthopedic knives, orthopedic scissors, orthopedic forceps, orthopedic hooks, orthopedic needles, orthopedic scrapers, orthopedic cones, orthopedic drills, orthopedic saws, orthopedic chisels, orthopedic files / shovels and active orthopedic instruments, etc. After the rehabilitation of fracture patients, it is often required to remove the internal fixation device for fracture, i.e. to remove the steel plate and screw, which requires the use of nail holding forceps to clamp the screw rod for limiting, so as to facilitate medical staff to remove the screw from the patient's body.

[0003] For example, Chinese Patent Publication No. CN216167798U discloses a nail holding forceps for orthopedic surgery, which includes left and right forceps arms, the middle parts of the left and right forceps arms are hinged by a pin, the front ends of the left and right forceps arms are bent upward to form holding parts, the holding parts and the respective forceps arm bodies form a 120-degree angle, the ends of each bent part are hollow semicylinders, a semicircular groove is formed in the middle part of the hollow semicylinder, when the left and right forceps arms are closed, the two hollow semicylinders form a complete hollow cylinder, and the two semicircular grooves form a complete annular groove matching the screw cap to be clamped, the nail holding forceps can conveniently and effectively clamp the screw, and is convenient for use in surgery. The tooth surfaces are oppositely arranged, and when the left and right forceps arms are closed, the two tooth racks can be engaged and locked

[0004] The above-mentioned nail holding forceps still have some deficiencies. When the left and right forceps arms are closed, the left and right forceps arms are locked by the two tooth racks with opposite tooth surfaces engaging each other. Since the tooth surfaces are in close contact during tooth engagement, the friction force of the contact surface is large, which makes the locking and unlocking operations of the left and right forceps arms more laborious and inconvenient to use. In addition, long-term use can cause large wear of the tooth racks, plastic deformation of the tooth racks, affect the service life, and reduce the locking effect of the left and right forceps arms.

[0005] Therefore, it is necessary to provide a nail holding forceps for orthopedic surgery to solve the above technical problems. UTILITY MODEL CONTENTS

[0006] The utility model aims to provide a nail holding forceps for orthopedic surgery to solve the problems raised in the above background.

[0007] To achieve the above object, the utility model discloses the following technical scheme for solving the above technical problem: A kind of holding nail forceps for orthopedics surgery, including left forceps arm, right forceps arm and pin, the middle part of left forceps arm and right forceps arm is hinged by pin, the front end of left forceps arm and right forceps arm is bent upwards and is fixed with hollow half cylinder, when left forceps arm and right forceps arm are closed, two hollow half cylinders form a complete hollow cylinder, the end of left forceps arm and right forceps arm is fixed with finger ring, locking assembly is arranged between left forceps arm and right forceps arm, pressurizing assembly is arranged on locking assembly.

[0008] As a further scheme of the utility model, the locking assembly includes an arc-shaped socket fixed at the end of the left forceps arm and located between the left and right forceps arms, the end of the right forceps arm is fixed with an arc-shaped metal spring inserted into the arc-shaped socket, the centers of the arc-shaped socket and the arc-shaped metal spring coincide with the axis of the pin, an arc convex block is fixed on the side surface of the arc-shaped metal spring, and a clamping groove matching the arc convex block is formed on the side surface of the arc-shaped socket.

[0009] As a further scheme of the utility model, the arc convex block and the clamping groove are provided with multiple ones, and the multiple arc convex blocks and clamping grooves are equidistantly distributed.

[0010] As a further scheme of the utility model, a transition round corner is arranged on the edge of the clamping groove slidingly matched with the arc convex block.

[0011] As a further scheme of the utility model, the pressurizing assembly includes a nut sleeve fixed on the outer wall of the arc-shaped socket, a locking bolt is threadedly connected in the nut sleeve, and the screw end of the locking bolt is in contact with the side surface of the arc-shaped metal spring.

[0012] As a further scheme of the utility model, a rubber pad is fixed on the side surface of the screw end of the locking bolt.

[0013] As a further scheme of the utility model, a convex rib is arranged on the side surface of the end of the locking bolt, and multiple convex ribs are annularly distributed.

[0014] Compared with the prior art, the utility model has the beneficial effects that: the left and right forceps arms are automatically tensioned and locked by the locking assembly, so that the left and right forceps arms do not need to be held by hands all the time, manpower is saved, the holding nail forceps is more labor-saving, the overall practicability is improved, the left and right forceps arms are more labor-saving and convenient to unlock through the arc-shaped locking structure of the locking assembly, compared with the gear locking in the prior art, the wear of the locking component is greatly reduced, the service life of the component is prolonged, and the locking stability of the left and right forceps arms is ensured by the pressurizing assembly. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model is further described below in combination with the drawings and embodiments:

[0016] Figure 1 It is the overall structure of the utility model top view;

[0017] Figure 2 It is the locking assembly local structure schematic of the utility model Figure 1 ;

[0018] Figure 3 It is Figure 2 structure enlarged view in A place of the utility model;

[0019] Figure 4 It is the arc convex block local structure schematic of the utility model;

[0020] Figure 5 It is the pressurizing assembly local structure schematic of the utility model;

[0021] Figure 6 It is the rubber pad local structure schematic of the utility model.

[0022] In the drawings, the component list represented by each sign is as follows:

[0023] 1, locking assembly;101, clamping groove;102, arc convex block;103, arc socket;104, arc metal spring piece;2, pressurizing assembly;201, locking bolt;202, rubber pad;203, convex rib;204, nut sleeve;3, left arm of pincers;4, right arm of pincers;5, finger ring;6, pin;7, hollow semicylinder. Specific implementation

[0024] The utility model is further described below in combination with the embodiments.

[0025] Please refer to Figures 1-6The utility model provides a kind of nail holding forceps for orthopedics surgery, including left forceps arm 3, right forceps arm 4 and pin 6, the middle part of left forceps arm 3 and right forceps arm 4 is hinged by pin 6, the front end of left forceps arm 3 and right forceps arm 4 is bent upwards and is fixed with hollow half cylinder 7, when left forceps arm 3 and right forceps arm 4 are closed, two hollow half cylinders 7 form a complete hollow cylinder, the end of left forceps arm 3 and right forceps arm 4 is fixed with ring 5, locking assembly 1 is arranged between left forceps arm 3 and right forceps arm 4, locking assembly 1 is provided with pressurizing assembly 2;When left forceps arm and right forceps arm are closed, two hollow half cylinders form a complete hollow cylinder, and the complete hollow cylinder is matched with the screw cap to be clamped, the nail holding forceps of the utility model is used, and the thumb and index finger of one hand of operating surgeon are inserted into two rings 5 respectively, two rings 5 are separated, then two hollow half cylinders are also separated synchronously, at this moment, the screw rod part of the screw to be clamped is held by the other hand, and the screw cap is placed in one of hollow half cylinders 7;Then close two rings 5, the screw cap is limited in the complete hollow cylinder, that is, the screw is clamped by two hollow half cylinders 7, in this process, left forceps arm 3 and right forceps arm 4 are automatically tensioned and locked by locking assembly 1, so that left forceps arm 3 and right forceps arm 4 need not be held tightly by hand all the time, manpower is saved, the labor-saving property of nail holding forceps is effectively improved, overall practicability is improved, compared with the tooth locking of the prior art through rack structure cooperation, the arc surface locking structure of locking assembly 1 can make left forceps arm 3 and right forceps arm 4 more labor-saving and convenient to unlock, while greatly reducing the wear of locking component, prolonging the service life of component, locking assembly 1 is pressed and positioned by the pressurizing assembly 2 set, so as to further improve the locking stability of locking assembly 1.

[0026] Further as Figure 1 、 Figure 2 、 Figure 3 And Figure 4As shown, it is worth noting that the locking assembly 1 comprises an arc-shaped socket 103 fixed at the end of the left jaw arm 3 and between the left jaw arm 3 and the right jaw arm 4, an arc-shaped metal spring 104 fixed at the end of the right jaw arm 4 and slidingly inserted into the arc-shaped socket 103, the centers of the arc-shaped socket 103 and the arc-shaped metal spring 104 are coaxially arranged with the axis of the pin 6, an arc-shaped protrusion 102 is fixed on the side surface of the arc-shaped metal spring 104, a clamping groove 101 is formed on the side surface of the arc-shaped socket 103 and matched with the arc-shaped protrusion 102, the clamping groove 101 and the arc-shaped protrusion 102 are provided with a plurality of arc-shaped protrusions 102 and clamping grooves 101, and the plurality of arc-shaped protrusions 102 and clamping grooves 101 are equidistantly distributed; in particular, when the left jaw arm 3 and the right jaw arm 4 are folded, the arc-shaped metal spring 104 is inserted into the arc-shaped socket 103, a gap is provided between the side surface of the arc-shaped metal spring 104 away from the arc-shaped protrusion 102 and the inner side wall of the arc-shaped socket 103, the arc-shaped metal spring 104 can be popped up in the arc-shaped socket 103, so that the arc-shaped metal spring 104 drives the arc-shaped protrusion 102 on it to be clamped into the clamping groove 101 at different positions, the arc-shaped metal spring 104 is locked in the arc-shaped socket 103 through the cooperation of the arc-shaped protrusion 102 and the clamping groove 101, so that the left jaw arm 3 and the right jaw arm 4 are automatically tensioned and locked, thereby saving the need to hold the left jaw arm 3 and the right jaw arm 4 by hand all the time, saving manpower, effectively improving the labor-saving property of the nail holding pliers, improving the overall practicality, and compared with the tooth locking through the rack structure cooperation in the prior art, the arc-shaped protrusion 102 can make the left jaw arm 3 and the right jaw arm 4 more labor-saving and convenient to unlock, while greatly reducing the wear of the locking component and prolonging the service life of the component.

[0027] Further as shown in Figure 5 and Figure 6 , it is worth noting that the pressing assembly 2 comprises a nut sleeve 204 fixed on the outer side wall of the arc-shaped socket 103, a locking bolt 201 is threadedly connected in the nut sleeve 204, and the screw end of the locking bolt 201 is in contact with the side surface of the arc-shaped metal spring 104; in particular, when the locking bolt 201 is tightened, the arc-shaped metal spring 104 is pressed by the screw end of the locking bolt 201, thereby further improving the locking stability of the arc-shaped metal spring 104 in the arc-shaped socket 103 and ensuring the nail pliers end clamping effect.

[0028] The scheme has the following working process: when the left jaw arm 3 and the right jaw arm 4 are folded, the arc-shaped metal spring 104 is inserted into the arc-shaped socket 103, a gap is provided between the side of the arc-shaped metal spring 104 away from the arc convex block 102 and the inner side wall of the arc-shaped socket 103, the arc-shaped metal spring 104 can be popped up in the arc-shaped socket 103, so that the arc-shaped metal spring 104 drives the arc convex block 102 on it to be clamped into the clamping groove 101 in different positions, the arc-shaped metal spring 104 is locked in the arc-shaped socket 103 through the cooperation of the arc convex block 102 and the clamping groove 101, so as to automatically tighten and lock the left jaw arm 3 and the right jaw arm 4, and the two hollow semicylinders 7 can hold the screw by holding the left jaw arm 3 and the right jaw arm 4 tightly, the arc-shaped metal spring 104 is pressed tightly through the threaded rod end of the locking bolt 201, the locking stability of the arc-shaped metal spring 104 in the arc-shaped socket 103 is further improved, and the locking effect of the left jaw arm 3 and the right jaw arm 4 is ensured.

[0029] Further as shown in Figure 3 It is worth noting that the edge of the clamping groove 101 that is in sliding cooperation with the arc convex block 102 is provided with a transition round corner; in specific work, the transition round corner reduces the friction resistance when the arc convex block 102 is pulled out of the clamping groove 101, and improves the smoothness of the arc convex block 102 pulled out of the clamping groove 101.

[0030] Further as shown in Figure 6 It is worth noting that the rubber pad 202 is fixed on the side surface of the threaded rod end of the locking bolt 201; in specific work, the rubber pad 202 effectively improves the friction force of the threaded rod end of the locking bolt 201 pressing the arc-shaped metal spring 104 while avoiding bruising.

[0031] Further as shown in Figure 6 It is worth noting that the convex rib 203 is provided on the end surface of the locking bolt 201, and the convex rib 203 is provided with a plurality of convex ribs 203 which are annularly distributed.

[0032] Summarize: through locking assembly 1 left arm 3 and right arm 4 are automatically pulled tight and locked, so as to save manpower, effectively improve the labor-saving nature of the nail holding pliers, improve the overall practicability, compared with the gear locking through the rack structure cooperation in the prior art, through the arc surface locking structure of locking assembly 1 can make left arm 3 and right arm 4 unlock operation more labor-saving and convenient, while greatly reducing the wear of locking component, prolonging the service life of component, through the setting of pressing assembly 2, locking assembly 1 is pressed and limited, so as to further improve the locking stability of locking assembly 1, through the setting of transition fillet, reduce the friction resistance when the arc convex block 102 is taken out from the clamping groove 101, improve the smoothness of the arc convex block 102 taken out from the clamping groove 101, through the setting of rubber pad 202, effectively improve the friction force of the screw rod end of locking bolt 201 pressing the arc metal spring 104, while avoiding pressure injury.

Claims

1. A nail holding forceps for orthopedic surgery, comprising a left forceps arm, a right forceps arm, and a pin, the middle portions of the left forceps arm and the right forceps arm being hinged by the pin, characterized in that, The front end of the left and right clamping arms is bent upward and fixed with a hollow semi-cylinder, when the left and right clamping arms are closed, the two hollow semi-cylinders form a complete hollow cylinder, the end of the left and right clamping arms is fixed with a ring, a locking assembly is arranged between the left and right clamping arms, and a pressing assembly is arranged on the locking assembly.

2. The nail holding forceps for orthopaedic surgery according to claim 1, wherein The locking assembly comprises an arc-shaped socket fixed at the end of the left clamping arm and between the left and right clamping arms, the end of the right clamping arm is fixed with an arc-shaped metal spring plate slidingly inserted into the arc-shaped socket, the center of the arc-shaped socket and the arc-shaped metal spring plate is coaxially arranged with the axis of the pin, the side surface of the arc-shaped metal spring plate is fixed with an arc convex block, and the side surface of the arc-shaped socket is provided with a clamping groove matched with the arc convex block.

3. The nail holding forceps for orthopaedic surgery according to claim 2, wherein The arc convex block and the clamping groove are provided with a plurality of arc convex blocks and clamping grooves which are equidistantly distributed.

4. The nail holding forceps for orthopaedic surgery according to claim 3, wherein The edge of the clamping groove slidingly matched with the arc convex block is provided with a transition fillet.

5. The nail holding forceps for orthopaedic surgery according to claim 2, wherein The pressing assembly comprises a nut sleeve fixed on the outer side wall of the arc-shaped socket, the nut sleeve is threadedly connected with a locking bolt, and the screw end of the locking bolt is in contact with the side surface of the arc-shaped metal spring plate.

6. The nail holding forceps according to claim 5, wherein The screw end side surface of the locking bolt is fixedly attached with a rubber pad.

7. The nail holding forceps according to claim 6, wherein The end head side surface of the locking bolt is provided with a convex rib, and the convex rib is provided with a plurality of convex ribs which are annularly distributed.

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