Steel needle puncture forceps for assisting sternum suture

Abstract

The steel needle puncture forceps for assisting in sternum suturing comprise a first forceps body and a second forceps body which are hinged to each other and can be oppositely clamped on the two sides of a sternum, a forceps mouth of the first forceps body is provided with a needle clamping mechanism for fixing a suturing steel needle, and a forceps mouth of the second forceps body is provided with a through hole for the suturing steel needle to penetrate in. The through hole is opposite to the needle clamping mechanism, and the forceps mouths of the first forceps body and the second forceps body are mutually clamped, so that a suture steel needle fixed on the needle clamping mechanism can penetrate through the sternum and penetrate into the through hole. The first forceps body and the second forceps body adopt opposite clamping, one-way pressure and stress on the sternum are avoided, the stability is good, secondary injury to a patient is avoided, the first forceps body and the second forceps body apply force through opposite clamping according to the lever principle, a suture steel needle can easily penetrate through the sternum, time and labor are saved, sternum suture is more convenient and faster, and the sternum suture efficiency is improved. And the operation time of sternum suture is greatly shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices for sternum suture, in particular to a steel needle puncture forceps for assisting sternum suture. Background Art

[0002] In anterior chest approach surgeries such as mediastinal and cardiovascular surgeries, it is necessary to transect or longitudinally saw the sternum to expose the operative field for surgical operations. After the surgery, the sternum needs to be sutured. In the prior art, when suturing the sternum, due to the hardness of the sternum, a blunt-tipped needle holder is generally used to hold a triangular steel needle with a wire to drill and suture the sternum, or a sternum puncture cone is used to drill the sternum, and then a wire is used for knotting and suturing. For example, a sternum suture cone disclosed in the authorized publication number CN202207170U includes a handle and a threaded cone body. A wire groove is provided at the front section of the threaded cone body, and a wire threading hole is provided at the upper end of the wire groove. When performing sternum suture, the threaded cone body is screwed into the suture site for drilling. After inserting the suture thread into the wire threading hole and pressing it into the wire groove, the threaded cone body assists the suture thread to pass through the sternum for suture. In both of the above two sternum suture methods, when suturing, a unidirectional pressing force needs to be applied to the sternum. If the force application is unstable, a needle slipping phenomenon will occur, which is likely to cause secondary harm to the patient. Moreover, when drilling, the force application entirely depends on manual pressing, resulting in problems such as slow drilling speed, difficulty in penetrating the sternum, time-consuming and laborious, inconvenient sternum suture, and long operation time. Summary of the Utility Model

[0003] In view of this, it is necessary to provide a steel needle puncture forceps for assisting sternum suture to solve the technical problems such as slow drilling speed, difficulty in penetrating the sternum, time-consuming and laborious in the prior art.

[0004] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0005] A steel needle puncture forceps for assisting sternum suture includes a first forceps body and a second forceps body which are hinged to each other and can be relatively clamped on both sides of the sternum. A needle clamping mechanism for fixing a suture steel needle is arranged on the forceps mouth of the first forceps body. A through hole for the suture steel needle to penetrate is opened on the forceps mouth of the second forceps body. The through hole is directly opposite to the needle clamping mechanism. The forceps mouths of the first forceps body and the second forceps body are clamped with each other, so that the suture steel needle fixed on the needle clamping mechanism can penetrate the sternum and penetrate into the through hole.

[0006] Preferably, a clamping groove for the suture needle to enter is longitudinally formed on the jaws of the first jaw body. One of the side walls inside the clamping groove is a clamping wall. The needle clamping mechanism is arranged in the clamping groove. The needle clamping mechanism includes a steel needle clamping arm and a pin shaft. The pin shaft is horizontally arranged on the side opposite to the clamping wall in the clamping groove. The tail end of the steel needle clamping arm is installed on the pin shaft. The head end of the steel needle clamping arm is a clamping end. The clamping end faces the clamping wall and extends towards the clamping wall, forming a clamping opening for clamping the suture needle between the clamping end and the clamping wall. And the steel needle clamping arm can flip around the pin shaft towards the inner side of the jaw to separate its clamping end from the clamping wall to open the clamping opening, or flip around the pin shaft towards the clamping wall to squeeze its clamping end towards the clamping wall to clamp the suture needle entering the clamping opening.

[0007] Preferably, the needle clamping mechanism further includes a needle discharging handle. One end of the pin shaft horizontally penetrates through the side wall of the jaw of the first jaw body and can rotate freely. The needle discharging handle is fixedly installed at the end of the pin shaft penetrating through the side wall of the jaw of the first jaw body. The steel needle clamping arm is fixedly connected to the pin shaft. By pulling the needle discharging handle, the pin shaft can be driven to rotate, and the steel needle clamping arm can be driven by the pin shaft to flip towards the inner side of the jaw in the clamping groove to separate its clamping end from the clamping wall to open the clamping opening for needle insertion or needle discharging, or drive the steel needle clamping arm to flip towards the clamping wall of the clamping groove to clamp the suture needle entering the clamping opening.

[0008] Preferably, a return spring is sleeved on the end of the pin shaft where the needle discharging handle is installed. The return spring acts on the pin shaft or the needle discharging handle to apply force to the pin shaft, so that the pin shaft drives the steel needle clamping arm to flip adaptively towards the clamping wall under the elastic force of the return spring.

[0009] Preferably, a plurality of tooth grooves are vertically formed on the clamping wall.

[0010] Preferably, a wear-resistant layer is arranged on the surface of the clamping end of the steel needle clamping arm in contact with the suture needle.

[0011] Preferably, anti-slip lines are arranged on the wear-resistant layer.

[0012] Preferably, protective pads are respectively arranged on the clamping surfaces of the two jaws of the first jaw body and the second jaw body facing each other.

[0013] Preferably, stop blocks are respectively arranged on the outer sides of the handles of the first jaw body and the second jaw body. The stop blocks are close to the hinge joints of the first jaw body and the second jaw body.

[0014] Preferably, scale lines are arranged on the outer side wall of the jaw of the second jaw body.

[0015] As can be seen from the above technical solution, the steel needle puncture forceps for assisting sternal suture provided by the present application includes a first forceps body and a second forceps body that are hinged to each other and can be relatively clamped on both sides of the sternum. A needle clamping mechanism for fixing the suture steel needle is provided on the forceps mouth of the first forceps body, and a through hole for the suture steel needle to penetrate is opened on the forceps mouth of the second forceps body. The through hole is directly opposite to the needle clamping mechanism. During the sternal suture operation, the forceps mouths of the first forceps body and the second forceps body clamp the sternum against each other, enabling the suture steel needle fixed on the needle clamping mechanism to penetrate the sternum and penetrate into the through hole. The first forceps body and the second forceps body are clamped in an opposing manner, avoiding one-way pressure on the sternum, having good stability, and avoiding secondary injury to the patient. Moreover, the first forceps body and the second forceps body apply opposing clamping force through the lever principle, enabling the suture steel needle to easily penetrate the sternum, saving time and effort, making the sternal suture more convenient, and greatly shortening the operation time of sternal suture. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the utility model.

[0017] Figure 2 is a schematic structural diagram of the utility model from another angle.

[0018] Figure 3 is a schematic structural diagram of the needle clamping mechanism.

[0019] In the figure: the first forceps body 1, the second forceps body 2, the pin 3, the suture steel needle 4, the through hole 6, the clamping groove 7, the tooth groove 8, the stop plate 9, the protective pad 10, the scale line 11, the needle clamping mechanism 5, the steel needle clamping arm 51, the pin shaft 52, the needle unloading handle 53, the return spring 54, the wear-resistant layer 55. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Please refer to Figure 1 and Figure 2, an embodiment of the present utility model provides a steel needle puncture forceps for assisting sternal suture, which includes a first forceps body 1 and a second forceps body 2. The first forceps body 1 and the second forceps body 2 are staggered with each other and are hinged by a pin 3. The forceps mouths of the first forceps body 1 and the second forceps body 2 can be relatively clamped on both sides of the sternum. A needle clamping mechanism 5 for fixing the suture steel needle 4 is arranged on the forceps mouth of the first forceps body 1. A through hole 6 for the suture steel needle 4 to penetrate is opened on the forceps mouth of the second forceps body 2. The through hole 6 is directly opposite to the needle clamping mechanism 5. When suturing the sternum, open the forceps mouths of the first forceps body 1 and the second forceps body 2, clamp the suture steel needle 4 with a steel wire for suturing the sternum by the needle clamping mechanism 5 on the first forceps body 1, and make the tip of the suture steel needle 4 directly opposite to the through hole 6 on the second forceps body 2. Place the forceps mouth of the second forceps body 2 on the upper or lower side of the sternal suture position. The handles of the first forceps body 1 and the second forceps body 2 are at the end far from the forceps mouth. Manually squeeze the handles of the first forceps body 1 and the second forceps body 2 to make the forceps mouths of the first forceps body 1 and the second forceps body 2 bite and apply force to make the suture steel needle 4 fixed on the needle clamping mechanism 5 move towards the through hole 6 on the second forceps body 2 and penetrate through the sternum and then into the through hole 6.

[0022] Specifically, a clamping groove 7 for the suture steel needle 4 to enter is longitudinally opened on the forceps mouth of the first forceps body 1. One of the side walls inside the clamping groove 7 is a clamping wall. The needle clamping mechanism 5 is arranged in the clamping groove 7. The needle clamping mechanism 5 includes a steel needle clamping arm 51 and a pin shaft 52. The pin shaft 52 is horizontally arranged on the side opposite to the clamping wall in the clamping groove 7. The tail end of the steel needle clamping arm 51 is installed on the pin shaft 52. The head end of the steel needle clamping arm 51 is a clamping end. The clamping end is opposite to the clamping wall and extends towards the clamping wall. A clamping opening for clamping the suture steel needle 4 is formed between the clamping end of the steel needle clamping arm 51 and the clamping wall. And the steel needle clamping arm 51 can rotate around the pin shaft 52 towards the inside of the forceps mouth or towards the inside of the clamping groove 7. When the steel needle clamping arm 51 rotates towards the inside of the forceps mouth, the clamping end of the steel needle clamping arm 51 is separated from the clamping wall to open the clamping opening to facilitate the suture steel needle 4 to enter or be taken out of the clamping opening. When the steel needle clamping arm 51 rotates around the pin shaft 52 towards the clamping wall, the clamping end of the steel needle clamping arm 51 can squeeze the suture steel needle 4 towards the clamping wall to form a mutual squeezing force with the clamping wall to clamp the suture steel needle 4 entering the clamping opening. The steel needle clamping arm 51 is inclined in the clamping groove 7. When the steel needle clamping arm 51 clamps the suture steel needle 4, the clamping end of the steel needle clamping arm 51 is lower than the clamping surface of the forceps mouth of the first forceps body 1, and the tail end of the steel needle clamping arm 51 is lower than the clamping end of the steel needle clamping arm 51. Thus, when the steel needle clamping arm 51 clamps the suture steel needle 4 and presses it against the sternum, under the action of the reaction force and friction force of the suture steel needle 4, the clamping end of the steel needle clamping arm 51 will form a downward rotating force in the clamping groove 7 and adaptively lean towards and squeeze the suture steel needle 4 to increase the clamping force to reduce the sliding of the suture steel needle 4.

[0023] Please continue to refer to Figures 1 to 2 , for the convenience of needle unloading and needle insertion, a needle unloading handle 53 is also provided on the pin shaft 52 of the needle clamping mechanism 5. Specifically, one end of the pin shaft 52 horizontally penetrates through the jaw side wall of the first jaw body 1 and can freely rotate in the clamping groove 7. The needle unloading handle 53 is fixedly installed at the end of the pin shaft 52 penetrating through the jaw side wall of the first jaw body 1 and is perpendicular to the pin shaft 52. The tail end of the needle unloading handle 53 extends away from the jaw. The steel needle clamping arm 51 is fixedly connected to the pin shaft 52. During operation, by manually pulling the needle unloading handle 53, the pin shaft 52 can be driven to rotate, and the steel needle clamping arm 51 can be driven by the pin shaft 52 to flip up and down in the clamping groove 7. Flipping up means flipping towards the inner side of the jaw, and flipping down means flipping towards the inside of the clamping groove 7. When the needle unloading handle 53 drives the steel needle clamping arm 51 to flip up, the clamping end of the steel needle clamping arm 51 can be separated from the clamping wall to open the clamping mouth. When the needle unloading handle 53 drives the steel needle clamping arm 51 to flip down, the clamping end of the steel needle clamping arm 51 can approach the clamping wall and form mutual clamping with the clamping wall, so as to clamp and fix the suture needle 4 entering the clamping mouth. After the suture needle 4 penetrates the sternum, the needle unloading handle 53 can be manually pulled to make the steel needle clamping arm 51 flip up to open the clamping mouth for needle unloading.

[0024] Please refer to Figure 3 , further, in order to enable the steel needle clamping arm 51 to actively rotate downward, a return spring 54 is sleeved on the end of the pin shaft 52 where the needle unloading handle 53 is installed. The return spring 54 is a kind of torsion spring. The return spring 54 acts on the pin shaft 52 or the needle unloading handle 53 and can apply force to the pin shaft 52 or the needle unloading handle 53, so that the pin shaft 52 drives the steel needle clamping arm 51 to rotate downward under the torsion of the return spring 54, and it adapts to flip and approach the clamping wall directionally, so as to facilitate clamping and fixing of the suture needle 4.

[0025] Please refer to Figure 2 , further, a plurality of tooth grooves 8 are arranged in parallel on the clamping wall. The tooth grooves 8 are vertically arranged, and their opening direction faces the through hole 6 on the jaw of the second jaw body 2. The width and depth of the tooth grooves 8 match the suture needle 4. When clamping and fixing the suture needle 4, the suture needle 4 can be clamped by the tooth grooves 8, so that the suture needle 4 can maintain a vertical state in the clamping mouth, preventing the suture needle 4 from skewing to both sides of the clamping wall during the needle insertion process. And through the tooth grooves 8, the contact area between the clamping wall and the suture needle 4 can be increased, further increasing the friction force between them and improving the stability of the suture needle 4 in the clamping mouth.

[0026] Please refer to Figure 1 and Figure 3, Further, in order to improve the service life of the steel needle clamping arm 51, a wear-resistant layer 55 is provided on the surface of the clamping end of the steel needle clamping arm 51 in contact with the suture steel needle 4. The wear-resistant layer 55 is made of tungsten alloy, and anti-slip lines are provided on the wear-resistant layer 55 to increase the friction between the steel needle clamping arm 51 and the suture steel needle 4.

[0027] Please continue to refer to Figure 1 or Figure 2 , Further, stop blocks 9 are respectively provided on the outer sides of the handles of the first clamp body 1 and the second clamp body 2, and the stop blocks 9 are close to the hinge joints of the first clamp body 1 and the second clamp body 2. When manually squeezing the handles of the first clamp body 1 and the second clamp body 2, the doctor's hand can be blocked at the handles of the first clamp body 1 and the second clamp body 2 through the stop blocks 9 to limit the hand, preventing the hand from sliding towards the jaws of the first clamp body 1 and the second clamp body 2, facilitating the application of force by the hand, and increasing the stability of the suture operation.

[0028] Further, protective pads 10 are respectively provided on the clamping surfaces of the two opposite jaws of the first clamp body 1 and the second clamp body 2. The protective pads 10 are made of silica gel material. When suturing the sternum, the protective pads 10 are placed on the clamping surfaces on both sides of the sternum to play a protective role, preventing the jaws of the first clamp body 1 and the second clamp body 2 from coming into hard contact with the sternum and reducing secondary squeezing damage to the sternum.

[0029] Further, scale lines 11 are provided on the outer side wall of the jaw of the second clamp body 2. When performing a suture operation, when the jaw of the second clamp body 2 is placed on the suture position of the sternum, the position of the jaw at the edge of the sternum suture can be observed through the scale lines 11, so that the doctor can accurately master the distance between the needle insertion point and the edge of the sternum.

[0030] When this steel needle puncture forceps is specifically used, by manually pulling the needle removal handle 53, the clamping opening for clamping the suture steel needle 4 is opened, the suture steel needle 4 is placed in the clamping opening, the tip of the suture steel needle 4 faces the jaw of the second clamp body 2, and the needle removal handle 53 is released or pulled to make the steel needle clamping arm 51 flip downward to clamp and fix the suture steel needle 4. The jaw of the second clamp body 2 is placed on the upper side or the lower side of the sternum suture position, and the handles of the first clamp body 1 and the second clamp body 2 are manually squeezed tightly so that the jaws of the first clamp body 1 and the second clamp body 2 bite and apply force to make the suture steel needle 4 fixed in the clamping opening move towards the through hole 6 on the second clamp body 2 and penetrate through the sternum and then into the through hole 6. Then, manually pull the needle removal handle 53 to open the clamping opening again. After separating the steel needle puncture forceps from the suture steel needle 4, the suture steel needle 4 passing through the sternum is pulled out by an auxiliary fixture such as pliers, and then the suture steel needle 4 is fixed on this steel needle puncture forceps again to perform a secondary auxiliary suture steel needle 4 puncture operation, and thus the auxiliary suture operation on the sternum is gradually completed.

[0031] The steel needle puncture forceps clamps the sternum in an opposing manner through the first forceps body 1 and the second forceps body 2, avoiding unidirectional pressure on the sternum, having good stability, and avoiding secondary injury to the patient. Moreover, through the lever principle, the suture steel needle 4 can easily penetrate the sternum, saving time and effort, making sternum suture more convenient, and greatly shortening the operation time of sternum suture.

[0032] The above-disclosed are only the preferred embodiments of the present utility model. Of course, the scope of rights of the present utility model cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present utility model still fall within the scope covered by the utility model.

Claims

1. A steel needle puncture forceps for assisting sternal suturing, comprising a first clamp body and a second clamp body hingedly arranged to each other and capable of clamping on both sides of the sternum, characterized in that: The jaws of the first clamp body are provided with a needle clamping mechanism for fixing the suture needle, and the jaws of the second clamp body are provided with a through hole for the suture needle to penetrate. The through hole is opposite to the needle clamping mechanism, and the jaws of the first clamp body and the second clamp body are clamped with each other, so that the suture needle fixed on the needle clamping mechanism can pass through the sternum and penetrate into the through hole.

2. The steel needle puncture forceps for assisting sternal suturing as claimed in claim 1, characterized in that: A clamping groove for the entry of a suture needle is longitudinally opened on the jaws of the first pliers body, one of the side walls inside the clamping groove is the clamping wall, and the needle clamping mechanism is arranged in the clamping groove, and the needle clamping mechanism includes a needle clamping arm and a pin shaft, and the pin shaft is transversely arranged on the side of the clamping groove opposite to the clamping wall, the tail end of the needle clamping arm is installed on the pin shaft, and the head end of the needle clamping arm is the clamping end, and the clamping end is opposite to the clamping wall and extends in the direction of the clamping wall, forming a clamping opening for clamping the suture needle between the clamping wall and the needle clamping arm, and the needle clamping arm can be flipped around the pin shaft toward the inner side of the jaws to separate the clamping end from the clamping wall to open the clamping opening, or flipped around the pin shaft toward the clamping wall to squeeze the clamping end toward the clamping wall to clamp the suture needle entering the clamping opening.

3. The steel needle puncture forceps for assisting sternal suturing as claimed in claim 2, characterized in that: The needle clamping mechanism also includes a needle removal handle, one end of the pin shaft laterally passes through the side wall of the clamp mouth of the first clamp body and can rotate freely. The needle removal handle is fixedly installed at the end of the pin shaft passing through the side wall of the clamp mouth of the first clamp body, and the steel needle clamp arm is fixedly connected to the pin shaft. Pulling the needle removal handle can drive the pin shaft to rotate, and drive the steel needle clamp arm to flip toward the inner side of the clamp mouth in the clamping groove through the pin shaft, so that the clamping end is separated from the clamping wall to open the clamping opening for needle insertion or needle removal, or drive the steel needle clamp arm to flip toward the clamping wall of the clamping groove to clamp the suture steel needle entering the clamping opening.

4. The steel needle puncture forceps for assisting sternal suturing as claimed in claim 3, characterized in that: One end of the pin shaft mounted with the needle unloading handle is sleeved with a return spring, and the return spring acts on the pin shaft or the needle unloading handle to apply force to the pin shaft, so that the pin shaft drives the steel needle clamp arm to adaptively flip and move closer to the clamping wall under the elastic force of the return spring.

5. The steel needle puncture forceps for assisting sternal suturing as claimed in claim 4, characterized in that: A plurality of tooth grooves are vertically formed on the clamping wall.

6. The steel needle puncture forceps for assisting sternal suturing as claimed in claim 5, characterized in that: A wear-resistant layer is arranged on the surface where the clamping end of the steel needle clamp arm contacts the suture steel needle.

7. The steel needle puncture forceps for assisting sternal suturing as claimed in claim 6, characterized in that: The wear-resistant layer is provided with anti-skid patterns.

8. The steel needle puncture forceps for assisting sternal suturing as claimed in claim 2, characterized in that: Protection pads are respectively arranged on the clamping surfaces of the two opposite jaws of the first pliers body and the second pliers body.

9. The steel needle puncture forceps for assisting sternal suturing as claimed in claim 2, characterized in that: Stop plates are respectively arranged on the outer sides of the handles of the first pliers body and the second pliers body, and the stop plates are close to the hinges of the first pliers body and the second pliers body.

10. The steel needle puncture forceps for assisting sternal suturing as claimed in claim 2, characterized in that: The outer side wall of the jaws of the second pliers body is provided with scale lines.

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