A rubber band pusher for a ligation gun

Abstract

The present invention belongs to the technical field of medical auxiliary equipment, and in particular, relates to a rubber ring pusher for a ligation gun, comprising a mounting tube with an opening on the front side, and a guide member, a ligation rubber ring, a multi-claw chuck, and an elastic rubber ring arranged in the mounting tube from front to back in sequence; the guide member is a cone structure; the multi-claw chuck is composed of a guide shaft, a clamping claw, and a connecting plate, the guide member can be slidably sleeved on the guide shaft, the ligation rubber ring is arranged on the rear side of the guide member and is squeezed on the rubber ring support surface by the guide member, and the elastic rubber ring is sleeved on the outside of each clamping claw so that it can be retracted after opening. The rubber ring pusher for a ligation gun based on the present application can not only quickly install the ligation rubber ring, but also improve the safety of the operation, reduce the operation content of the ligation operation, and shorten the operation time. The rubber ring pusher has a simple structure, low cost, compact structure, and small size, and has good application prospects.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical auxiliary instruments, and particularly relates to a rubber ring pusher for a ligature gun. Background Art

[0002] A ligature gun (ligator) is an important tool for performing ligature operations during anorectal ligation and other surgeries. Its basic function is to transfer and fix ligature tools such as rubber rings or coils at the surgical ligature position. During actual use, it is necessary to manually expand the rubber ring or elastic coil, then put it on the adsorption nozzle at the front end of the ligature gun (ligator), and finally complete the surgery. However, since the diameter of the rubber ring is very small after contraction in its natural state (generally less than 10 mm), and the size of the front end of the ligature gun is also small, the operation is not convenient. When doctors operate, they often need to cooperate with both hands to expand the rubber ring for fixation. Therefore, the installation of the rubber ring often requires the cooperation of multiple people. One person holds and fixes the ligature gun, and the other person installs it. In addition, doctors generally require to wear gloves during surgery, and it is already inconvenient to operate small parts. Coupled with the elasticity of the rubber ring, the operator needs to continuously exert force to keep it in an expanded state and prevent it from bouncing away during installation. Therefore, the existing ligature guns are more troublesome and time-consuming to use and cannot be operated by a single person. Summary of the Invention

[0003] The purpose of this application is to provide a rubber ring pusher for a ligature gun that can simplify the rubber ring installation steps, facilitate the quick installation of the rubber ring by a single person, so as to improve the surgical speed and reduce the operation content.

[0004] To achieve the above purpose, the following technical solutions are adopted in this application.

[0005] A rubber ring pusher for a ligature gun, used to install a rubber ring on the adsorption nozzle of the ligature gun, includes an installation cylinder 5 with an opening at the front side, and a guide member 1, a ligature rubber ring 2, a multi-claw chuck 3, and an elastic rubber ring 4 arranged in the installation cylinder in sequence from front to back;

[0006] The guide member 1 has a conical structure, with the cone bottom facing forward and the cone top facing backward towards the multi-claw chuck 3, and a through hole 1a is provided on the central cone axis; the diameter of the cone bottom of the guide member 1 is not less than the diameter of the adsorption nozzle on the ligature gun;

[0007] The multi-claw chuck 3 is composed of a guide shaft 3a inserted into the through hole, clamping claws 3b arranged in an annular array around the guide shaft, and a connecting plate 3c at the rear for connecting and fixing the guide shaft 3a and the clamping claws 3b. A positioning portion 3d is provided at the front end of the clamping claw 3b, and the surface of the positioning portion 3d facing away from the guide shaft is a conical surface. The conical surfaces on each positioning portion 3d form a rubber ring support surface; the connecting plate 3c is connected to the installation cylinder 5;

[0008] The guide member 1 is slidably mounted on the guide shaft 3a, the tying rubber ring 2 is arranged at the rear side of the guide member 1 and is squeezed on the rubber ring support surface by the guide member 1, and the elastic rubber ring 4 is mounted on the outside of each clamping claw so that it can be retracted after opening.

[0009] As a further improvement or optimization of the rubber ring pusher of the ligating gun, a plurality of guide grooves 1b are arranged on the outer conical surface of the guide member 1, and the number and position of the guide grooves correspond to the holding claws 3b.

[0010] A further improvement or optimization of the aforementioned rubber ring pusher of the ligating gun also includes an elastic anti-slip component 6 arranged on the front side of the guide member 1, and the elastic anti-slip component 6 is provided with a shrinkage hole with a diameter smaller than the diameter of the guide shaft 3a; the elastic anti-slip component is sleeved on the guide shaft through the shrinkage hole to prevent the guide member from detaching from the guide shaft.

[0011] A further improvement or optimization of the aforementioned rubber ring pusher of the tying gun is that the front side of the guide member 1 is provided with a cylindrical connecting structure 1c which can be inserted into the inner side of the adsorption pipe mouth;

[0012] The cone bottom of the guide member 1 is provided with an annular docking groove 1d which can dock with the adsorption pipe mouth.

[0013] A further improvement or optimization of the aforementioned rubber ring pusher of the tying gun, wherein the connecting plate 3c is detachably connected to the rear side of the mounting tube, and the connecting plate is a circular plate structure that can be buckled at the opening at the rear side of the mounting tube;

[0014] The connecting plate and the mounting tube are connected via a movable buckle structure.

[0015] As a further improvement or optimization of the aforementioned rubber ring pusher of the ligating gun, a blocking portion 3e is provided on the rear side of each rubber ring supporting surface on the positioning portion, and a positioning surface for supporting the ligating rubber ring 2 is provided on the front side of the blocking portion 3e.

[0016] Its beneficial effects are:

[0017] The tying gun rubber ring pusher of the present application has strong versatility and can be used with various types of tying guns (tying devices) to facilitate and quickly install the tying rubber ring; when in use, the front end of the guide member 1 is connected to the adsorption tube mouth of the tying gun, and the multi-claw chuck 3 (while driving the installation tube) is pushed close to the tying gun, and the guide member 1 moves toward the multi-claw chuck 3 along the guide shaft 3a under the reverse force of the adsorption tube mouth, and the clamping claws 3b on the multi-claw chuck 3 are stretched open by the guide member 1, and the tying rubber ring sleeved on the front end of the clamping claws is also stretched open, and continues to push until the tying rubber ring reaches the cone bottom position of the guide member, and then pushes forward a short distance, the inner side of the tying rubber ring loses the support of the guide member, and shrinks inward under the push of the clamping claws and sleeves on the adsorption tube mouth, completing the installation of the tying rubber ring, and then the pusher can be removed. The ligation gun rubber ring pusher based on the present application can not only quickly install the ligation rubber ring on the ligation gun (device), but also ensure that the ligation rubber ring, adsorption tube mouth and other positions no longer require manual operation during the whole process, thereby realizing equipment isolation, improving the safety of the operation, reducing the operation content of the ligation operation, and shortening the operation time. The rubber ring pusher has a simple structure, low cost, compact structure and small size, and can be used as a rubber ring installation tool for various disposable ligation equipment, and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of the rubber ring pusher of the ligature gun;

[0019] Figure 2 This is the assembly diagram of the rubber ring pusher of the ligature gun;

[0020] Figure 3 This is a schematic diagram of the structure of the guide Figure 1 ;

[0021] Figure 4 This is a schematic diagram of the structure of the guide Figure 2 ;

[0022] Figure 5 It is a structural schematic diagram of a multi-jaw chuck. DETAILED DESCRIPTION

[0023] The present application is described in detail below in conjunction with specific embodiments.

[0024] like Figures 1 to 5 As shown, a rubber ring pusher for a ligating gun of the present application is used to install a rubber ring on the adsorption tube mouth of the ligating gun. It does not rely on the ligating tool itself and can be used independently or as an accessory of the ligating gun.

[0025] It comprises a mounting tube 5 with an opening at the front side, and a guide member 1, a tying rubber ring 2, a multi-claw chuck 3, and an elastic rubber ring 4 which are sequentially arranged in the mounting tube from front to back;

[0026] The guide member 1 is of a cone structure, with the bottom of the cone facing forward, the top of the cone facing backward and pointing to the multi-claw chuck 3, and a through hole 1a is provided on the central cone axis; the diameter of the bottom of the cone of the guide member 1 is not less than the diameter of the adsorption pipe opening on the tying gun;

[0027] The multi-jaw chuck 3 is composed of a guide shaft 3a inserted into a through hole, clamping claws 3b arranged in a ring array around the guide shaft, and a connecting plate 3c on the rear side for connecting and fixing the guide shaft 3a and the clamping claws 3b. The front end of the clamping claw 3b is provided with a positioning portion 3d, and the side of the positioning portion 3d facing away from the guide shaft is a conical surface, and the conical surfaces on each positioning portion 3d constitute a rubber ring support surface; the connecting plate 3c is connected to the mounting tube 5; a plurality of guide grooves 1b are provided on the outer conical surface of the guide member 1, and the number and position of the guide grooves correspond to the holding claws 3b.

[0028] The guide piece is used to use the outer surface of the cone to expand the ligation rubber ring during operation so that its diameter becomes larger and can be put on the adsorption tube mouth of the ligation gun. By setting the guide groove corresponding to the clamping claw, it can be ensured that each clamping claw maintains a desired angle after contacting with the guide piece and will not slide to the left or right, thereby ensuring that the ligation rubber ring can be installed smoothly. At the same time, it can avoid friction between the clamping claw and the outer conical surface of the guide piece, keep the surface of the guide piece intact, and prevent burrs and other structures from damaging the ligation rubber ring.

[0029] In order to better fix the ligation rubber ring, prevent the ligation rubber ring from detaching, and ensure that the clamping claw can smoothly push the ligation rubber ring forward, in this embodiment, on the positioning part, a blocking part 3e is provided on the rear side of each rubber ring support surface, and a positioning surface for supporting the ligation rubber ring 2 is provided on the front side of the blocking part 3e.

[0030] The positioning surfaces on each clamping claw are in a ring array against the rear side of the ligating rubber ring, ensuring that the ligating rubber ring can be smoothly advanced and evenly stretched.

[0031] The guide member 1 is slidably mounted on the guide shaft 3a, the tying rubber ring 2 is arranged at the rear side of the guide member 1 and is squeezed on the rubber ring support surface by the guide member 1, and the elastic rubber ring 4 is mounted on the outside of each clamping claw so that it can be retracted after opening.

[0032] In order to prevent the guide member moving on the guide shaft from accidentally falling off and to prevent it from sliding off the guide shaft while being able to move along the shaft when pushed, the present embodiment also includes an elastic anti-slip member 6 arranged on the front side of the guide member 1, and the elastic anti-slip member 6 is provided with a shrinkage hole whose diameter is smaller than the diameter of the guide shaft 3a; the elastic anti-slip member is sleeved on the guide shaft through the shrinkage hole to prevent the guide member from falling off the guide shaft.

[0033] Furthermore, the following improvements have been made to facilitate the use of this embodiment:

[0034] To facilitate the connection between the guiding member and the adsorption pipe orifice, and enable the ligation rubber ring to smoothly transition from the guiding member to the adsorption pipe orifice, in this embodiment, a cylindrical connection structure 1c that can be inserted into the inner side of the adsorption pipe orifice is provided on the front side of the guiding member 1;

[0035] The cylindrical connection structure can be inserted into the adsorption pipe orifice, enabling the guiding member to be in close contact with the adsorption pipe orifice, preventing the ligation rubber ring from falling off, and at the same time facilitating the observation of whether the operation angle is correct.

[0036] Furthermore, a circular docking groove 1d that can be docked with the adsorption pipe orifice is provided at the conical bottom of the guiding member 1; the circular docking groove cooperates with the cylindrical connection structure to better fix the adsorption pipe orifice and prevent the adsorption pipe orifice from swaying randomly during the movement of the rubber ring.

[0037] To facilitate assembly and conveniently install the ligation rubber ring and the elastic rubber ring in place before use, in this embodiment, the connecting plate 3c is detachably connected to the rear side of the installation cylinder. The connecting plate has a circular plate structure and can be buckled at the rear opening of the installation cylinder; the connecting plate and the installation cylinder are connected through a movable buckle structure.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting the protection scope of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A rubber band pusher for a ligation gun, which is used to install a rubber band on the adsorption nozzle of the ligation gun, and is characterized in that It comprises a mounting tube (5) with an opening at the front side, and a guide piece (1), a tying rubber ring (2), a multi-claw chuck (3), and an elastic rubber ring (4) which are sequentially arranged in the mounting tube from front to back; The guide member (1) is in a cone structure, with the cone bottom facing forward and the cone top facing backward pointing to the multi-claw chuck (3), and a through hole (1a) is provided on the central cone axis; the diameter of the cone bottom of the guide member (1) is not less than the diameter of the adsorption pipe opening on the tying gun; The multi-jaw chuck (3) is composed of a guide shaft (3a) inserted into a through hole, clamping claws (3b) arranged in a ring array around the guide shaft, and a connecting plate (3c) on the rear side for connecting and fixing the guide shaft (3a) and the clamping claws (3b); a positioning portion (3d) is provided at the front end of the clamping claw (3b); a side of the positioning portion (3d) facing away from the guide shaft is a conical surface, and the conical surfaces on each positioning portion (3d) constitute a rubber ring support surface; the connecting plate (3c) is connected to the mounting tube (5); The guide member (1) is slidably mounted on the guide shaft (3a); the tying rubber ring (2) is arranged on the rear side of the guide member (1) and is pressed by the guide member (1) onto the rubber ring support surface; the elastic rubber ring (4) is mounted on the outside of each clamping claw so that the clamping claws can be retracted after being opened.

2. The rubber ring pusher of a ligature gun according to claim 1, characterized in that, The outer conical surface of the guide member (1) is provided with a plurality of guide grooves (1b), and the number and positions of the guide grooves correspond to the holding claws (3b).

3. The rubber ring pusher of a ligation gun according to claim 1, wherein It also includes an elastic anti-slipping member (6) arranged on the front side of the guide member (1), wherein the elastic anti-slipping member (6) is provided with a shrinkage hole having a diameter smaller than the diameter of the guide shaft (3a); the elastic anti-slipping member is sleeved on the guide shaft through the shrinkage hole to prevent the guide member from detaching from the guide shaft.

4. The rubber ring pusher of a ligation gun according to claim 1, characterized in that The front side of the guide member (1) is provided with a cylindrical connection structure (1c) which can be inserted into the inner side of the adsorption pipe mouth; the cone bottom of the guide member (1) is provided with an annular docking groove (1d) which can be docked with the adsorption pipe mouth.

5. The rubber ring pusher of a ligation gun according to claim 1, characterized in that The connecting plate (3c) is detachably connected to the rear side of the installation tube, and the connecting plate is in a circular plate structure so as to be buckled at the opening at the rear side of the installation tube; The connecting plate and the mounting tube are connected via a movable buckle structure.

6. The rubber ring pusher of a ligature device according to claim 1, characterized in that, On the positioning portion, a blocking portion (3e) is provided on the rear side of each rubber ring supporting surface, and a positioning surface for supporting the tying rubber ring (2) is provided on the front side of the blocking portion (3e).

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