A disposable automatic anorectal ligation gun

Abstract

The present application belongs to the technical field of medical auxiliary equipment, and particularly relates to a disposable automatic anorectal band ligation gun. It includes a gun shell with a gun barrel and a grip, and also includes an adsorption component arranged in the gun shell; the adsorption component includes an adsorption tube arranged in the gun shell, a first spring sleeved on the rear end of the adsorption tube, a push rod arranged on the rear side of the adsorption tube, a switch member arranged on the lower side of the push rod, a second spring sleeved on the guide shaft, and a third spring arranged between the push rod and the gun shell; during the entire band ligation process, the disposable automatic anorectal band ligation gun of the application only has a small forward and backward sliding of the adsorption tube and the push rod and a left and right sliding of the switch member. During the entire process, the relative movement is small, the stroke is short, and the operating force is small. The operation is light and labor-saving, and the structural parts are subjected to small forces. Therefore, the structure is more stable, and the processing and production requirements for the strength of the material and the process requirements during processing are low, and the production cost is low.

Description

Technical Field

[0001] The present application belongs to the technical field of medical auxiliary equipment, and in particular relates to a disposable automatic anorectal ligation gun. Background Art

[0002] Anorectal ligation device is a commonly used medical device for anorectal ligation surgery, which can reduce the time of medical surgery, reduce the difficulty of surgical operation and the cost of surgery. With the upgrading of equipment and material technology, people have developed many types of ligation instruments, among which manually controlled ligation instruments are low in cost, high in safety, easy to use, and are welcomed by medical institutions at all levels. There are also many ligation instruments driven and operated by various mechanisms on the market, but due to the limitations of cost and material properties, the current manual ligation equipment either relies on manpower to drive the main process, which is flexible but slow and inefficient, or uses spring mechanisms and small electronic devices to complete adsorption control, which is fast but complex in structure and high in cost. At the same time, the internal structure is relatively complex relative to the movement process, and the control is relatively troublesome. It is easy to cause operation failure due to misalignment and other reasons. For various reasons, most of the current ligation tools have not been fully promoted and applied in various primary medical institutions. Summary of the invention

[0003] The purpose of the present application is to provide a disposable automatic anorectal ligation gun which is simple to operate, has a fast ligation speed, a simple internal structure, good stability and low cost.

[0004] To achieve the above objectives, this application adopts the following technical solutions.

[0005] A disposable automatic anorectal ligation gun comprises a gun housing provided with a gun barrel 1 and a grip 2, and also comprises an adsorption component arranged in the gun housing;

[0006] The inner wall of the gun barrel 1 is provided with a first positioning ring 1b and a second positioning ring 1c in sequence from front to back; the inner side of the grip 2 is provided with a guide shaft 2a and a guide strip 2b, the guide shaft and the guide strip are sequentially arranged at the lower rear side of the second positioning ring 1c, and the rear side of the grip 2 is provided with an adsorption operation hole 2c;

[0007] The adsorption assembly includes an adsorption tube 3 arranged in the gun housing, a first spring 4 sleeved on the rear end of the adsorption tube, a push rod 5 arranged on the rear side of the adsorption tube, a switch member 6 arranged on the lower side of the push rod, a second spring sleeved on the guide shaft 2a, and a third spring 8 arranged between the push rod and the gun housing;

[0008] The adsorption tube 3 is sleeved inside the gun barrel, and an annular limiting shoulder 3a is provided at the rear side of the adsorption tube. The two ends of the first spring 4 are respectively pressed between the first annular positioning platform 1b and the annular limiting shoulder 3a. The inner diameter of the second positioning ring 1c is smaller than the outer diameter of the annular limiting shoulder 3a so as to block the adsorption tube.

[0009] The switch member 6 is arranged on the guide bar to slide left and right, and a through hole 6a is arranged on the front side of the switch member 6 so that it can be sleeved on the guide shaft 2a and the second spring is compressed; an L-shaped slide groove 6b is arranged on the top of the switch member 6, and the two ends of the L-shaped slide groove 6b point to the front and back directions and the left and right directions respectively; a switch button portion 6c is arranged on the side of the switch member 6 away from the guide shaft, and an opening 10 is correspondingly arranged on the housing, and the switch button portion 6c extends out of the opening 10;

[0010] The push rod 5 is arranged on the rear side of the adsorption tube 3, and an adsorption channel which can be connected with the adsorption tube is arranged inside the push rod, and the other end of the adsorption channel is connected with the external adsorption device; the front end of the push rod 5 can be slidably inserted into the rear end of the second positioning ring 1c and pass through the adsorption operation hole 2c to form a button part 5a, and a control handle 5b is arranged at the bottom of the push rod 5, and the control handle 5b is extended into the L-shaped slide groove 6b to slide forward and backward or left and right; a connecting handle 5c is arranged on the left or right side of the push rod, and the two ends of the third spring 8 are respectively connected to the connecting handle 5c and the inner wall of the shell on the rear side of the connecting handle so that the push rod has a tendency to move backward.

[0011] A further improvement or refinement of the aforementioned disposable automatic anorectal ligation gun is that a plurality of positioning rings 1d are further provided on the inner wall of the barrel 1, and the adsorption tube 3 is slidably supported by the positioning rings 1d and the first positioning ring 1b; a connecting ring is provided at the position where the inner wall of the handle 2 is opposite to the guide shaft 2a, and the connecting ring can be buckled on the guide shaft 2a, and the connecting ring squeezes the switch member 6 to compress the second spring.

[0012] As a further improvement or refinement of the aforementioned disposable automatic anorectal band ligation gun, a connecting portion 5d is provided at the lower side of the rear end of the push rod 5, the lower end of the adsorption channel passes through the connecting portion 5d, and an adsorption connecting hose 7 is sleeved on the connecting portion 5d.

[0013] A further improvement or refinement of the aforementioned disposable automatic anorectal ligation gun is that a connecting hole 20 is provided at the bottom of the handle 2, and also includes a connecting tube head 8, the upper end of the connecting tube head is clamped in the connecting hole 20, and the lower end is connected to an external adsorption device.

[0014] As a further improvement or refinement of the aforementioned disposable automatic anorectal ligation gun, the front end diameter of the adsorption tube 3 is enlarged and extends forward to form a ligation ring connecting portion 3d.

[0015] A further improvement or refinement of the aforementioned disposable automatic anorectal ligation gun is that a plurality of anti-skid grooves are arranged in a circular array on the outer side of the front edge of the ligation ring connection portion, and the direction of the anti-skid grooves is consistent with the movement direction of the adsorption tube.

[0016] The front end diameter of the gun barrel is enlarged to form a ligature limiting sleeve, which surrounds the ligature ring connecting part. When the adsorption tube slides forward and backward, the ligature ring connecting part can extend out or retract into the ligature limiting sleeve.

[0017] In order to prevent the ligation ring from getting stuck in the gap between the shell and the adsorption tube, in this embodiment, an opening 11 for observing and adjusting the ligation ring is provided on the rear side of the ligation limiting sleeve.

[0018] A further improvement or refinement of the aforementioned disposable automatic anorectal ligation gun, the shell is surrounded by a left shell and a right shell, the ligation limiting sleeve is arranged on the left shell or the right shell; the front end of the right shell or the left shell on the other side is cut off.

[0019] A further improvement or refinement of the aforementioned disposable automatic anorectal ligation gun is that an opening for observing and adjusting the ligation ring is provided on the rear side of the ligation limiting sleeve.

[0020] Its beneficial effects are:

[0021] The disposable automatic anorectal ligation gun of the present application has a simple internal structure, few action mechanisms, and simple ligation surgery, which can be operated by one person with one hand.

[0022] During operation, pushing the button part on the rear side of the push rod can push the adsorption tube to move forward and extend out of the gun barrel, and at the same time, the adsorption device is synchronously connected with the adsorption tube, and at the same time, the control handle on the lower side of the push rod moves to the other direction in the L-shaped slide and is held, and the device is set to remain in the adsorption state. During this process, the switch button part on the switch member extends out from the opening under the push of the second spring; at this time, the adsorption tube can be used for adsorption operation. After the adsorption operation is completed, the switch button part is pressed to push the switch member to compress the second spring. At the same time, the control handle moves in the opposite direction in the L-shaped slide and is released. Under the pull of the third spring, the push rod moves backward to drive the adsorption tube backward, and the ligation ring is pushed by the gun barrel to detach from the adsorption tube and be sleeved in the ligation area. Then, the push rod continues to move backward, and the rear end of the adsorption tube rests on the end surface of the second ring platform. Then, the adsorption tube is detached from the push rod, and the adsorption is released. The ligation gun can be removed from the operating area and reset.

[0023] Therefore, during the entire ligation process, the disposable automatic anorectal band ligation gun of the present application only has a small forward and backward sliding of the adsorption tube and the push rod and the left and right sliding of the switch component. During the entire process, the relative movement is small, the stroke is short, and the operating force is small. The operation is light and labor-saving, and the structural parts are subjected to little force. Therefore, the structure is more stable, the requirements for material strength and other requirements during processing and production, as well as the process requirements during processing, are low, the production cost is low, and the disposable automatic anorectal band ligation gun has a small impact force when in use, and will not cause discomfort to the patient during adsorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram (section view) of a disposable automatic anorectal ligation gun;

[0025] Figure 2 It is a schematic diagram of the structure of the gun shell (section view);

[0026] Figure 3 1. It is a schematic diagram of the structure of the push rod (section view);

[0027] Figure 4 It is a schematic diagram of the structure of the switch component (section view);

[0028] Figure 5 This is an assembly diagram of a disposable automatic anorectal ligation gun. DETAILED DESCRIPTION

[0029] The present application is described in detail below in conjunction with specific embodiments.

[0030] like Figure 1 to Figure 5 As shown, a disposable automatic anorectal band ligation gun of the present application is mainly used as a disposable tool for anorectal band ligation surgery to assist doctors in completing surgical operations. It has the same principle as a traditional band ligation gun, and both use an external adsorption device (generating a low-pressure adsorption airflow) to adsorb the area to be ligated, and then the ligation loop is placed on the lower part of the adsorption area to complete the ligation.

[0031] like Figure 1 , Figure 5 As shown, its basic structure includes a gun shell provided with a barrel 1 and a grip 2, and also includes an adsorption component arranged in the gun shell; in this embodiment, the impact inside the ligation gun is small, the action is simple, and there is no special requirement for material properties. It is generally made of medical polymer materials.

[0032] To facilitate processing and assembly, in this embodiment, the shell is surrounded by a left shell and a right shell, and the tying limit sleeve is arranged on the left shell or the right shell; the front end of the right shell or the left shell on the other side is cut off.

[0033] Among them, the inner wall of the barrel 1 is provided with a first positioning ring 1b and a second positioning ring 1c in sequence from front to back; the positioning ring structure in the present application is mainly used for positioning or supporting, and is generally formed directly from the inner wall using a processing technology such as injection molding.

[0034] A guide shaft 2a and a guide strip 2b are arranged inside the handle 2. The guide shaft and the guide strip are arranged below the rear side of the second positioning ring 1c in sequence. An adsorption operation hole 2c is arranged at the rear side of the handle 2.

[0035] As a preferred embodiment, the guide shaft and the guide strip are generally arranged to run left and right so that the control button portion of the switch member can extend from the left or right side (generally from the left side so that the switch member and the push rod can be operated with just one thumb).

[0036] The adsorption assembly includes an adsorption tube 3 arranged in the gun housing, a first spring 4 sleeved on the rear end of the adsorption tube, a push rod 5 arranged on the rear side of the adsorption tube, a switch member 6 arranged on the lower side of the push rod, a second spring sleeved on the guide shaft 2a, and a third spring 8 arranged between the push rod and the gun housing; the front end diameter of the adsorption tube 3 is enlarged and extends forward to form a ligation ring connecting portion 3d.

[0037] The adsorption tube is used to connect with the external adsorption equipment through the channel during the operation, and the front end of the tube is used to adsorb the diseased area to facilitate the ligation ring to be tightened. The adsorption tube 3 is set on the inner side of the gun barrel so that it can move back and forth in the gun barrel. Through the cooperation between the front end of the adsorption tube and the front end of the gun barrel, after the adsorption is positioned, the ligation ring on the adsorption tube can be pushed back to the ligation area.

[0038] Furthermore, in order to reduce the contact area between the adsorption tube and the gun barrel and avoid excessive friction, while ensuring that the adsorption tube can slide smoothly forward and backward, in this embodiment, a plurality of positioning rings 1d are further provided on the inner wall of the gun barrel 1, and the adsorption tube 3 is slidably supported by the positioning ring 1d and the first positioning ring 1b; the positioning ring can be used to support the adsorption tube to ensure smooth movement, while isolating the contact between the adsorption tube and most of the tube wall to prevent wear or blockage.

[0039] An annular limiting shoulder 3a is provided at the rear side of the adsorption tube, and the two ends of the first spring 4 are respectively pressed between the first annular positioning platform 1b and the annular limiting shoulder 3a so that the adsorption tube has a tendency to move backwards, and the inner diameter of the second positioning ring 1c is smaller than the outer diameter of the annular limiting shoulder 3a so as to block the adsorption tube;

[0040] The switch member 6 is arranged on the guide bar to slide left and right, and a through hole 6a is arranged on the front side of the switch member 6 so that it can be sleeved on the guide shaft 2a and the second spring is compressed; an L-shaped slide groove 6b is arranged on the top of the switch member 6, and the two ends of the L-shaped slide groove 6b point to the front and back directions and the left and right directions respectively; a switch button portion 6c is arranged on the side of the switch member 6 away from the guide shaft, and an opening 10 is correspondingly arranged on the housing, and the switch button portion 6c extends out of the opening 10;

[0041] The push rod 5 is arranged on the rear side of the adsorption tube 3, and an adsorption channel which can be connected with the adsorption tube is arranged inside the push rod, and the other end of the adsorption channel is connected with the external adsorption device; the front end of the push rod 5 can be slidably inserted into the rear end of the second positioning ring 1c and pass through the adsorption operation hole 2c to form a button part 5a, and a control handle 5b is arranged at the bottom of the push rod 5, and the control handle 5b is extended into the L-shaped slide groove 6b to slide forward and backward or left and right; a connecting handle 5c is arranged on the left or right side of the push rod, and the two ends of the third spring 8 are respectively connected to the connecting handle 5c and the inner wall of the shell on the rear side of the connecting handle so that the push rod has a tendency to move backward.

[0042] Furthermore, to facilitate control of the switch element, in this embodiment, a connecting ring is provided at a position where the inner wall of the handle 2 is opposite to the guide shaft 2a, and the connecting ring can be buckled on the guide shaft 2a, and the connecting ring squeezes the switch element 6 to compress the second spring.

[0043] To facilitate the connection of an external adsorption device, in this embodiment, a connecting portion 5d is provided at the lower side of the rear end of the push rod 5, the lower end of the adsorption channel passes through the connecting portion 5d, and an adsorption connecting hose 7 is sleeved on the connecting portion 5d.

[0044] Furthermore, in order to facilitate the automatic anorectal ligation gun to be more conveniently connected to the external adsorption device, in the present application, a connecting hole 20 is provided at the bottom of the handle 2, and a connecting pipe head 8 is also provided. The upper end of the connecting pipe head is clamped in the connecting hole 20 and connected to the adsorption connecting hose 7, and the lower end is connected to the external adsorption device.

[0045] In order to better fix the ligation ring and prevent it from falling off, a plurality of anti-skid grooves are arranged in a circular array on the outer side of the front edge of the ligation ring connection part, and the direction of the anti-skid grooves is consistent with the movement direction of the adsorption tube; so that the ligation ring will not rotate at will but can slide forward and fall out easily.

[0046] The front end diameter of the gun barrel is enlarged to form a ligature limiting sleeve, which surrounds the ligature ring connecting part. When the adsorption tube slides forward and backward, the ligature ring connecting part can extend out or retract into the ligature limiting sleeve.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application, rather than to limit the scope of protection of the present application. Although the present application has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the present application can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present application.

Claims

1. A disposable automatic anorectal banding gun, comprising a gun housing provided with a gun barrel (1) and a grip (2), characterized in that: Also included is an adsorption assembly disposed within the gun housing; The inner wall of the gun barrel (1) is provided with a first positioning ring (1b) and a second positioning ring (1c) in sequence from front to back; the inner side of the grip (2) is provided with a guide shaft (2a) and a guide strip (2b), the guide shaft and the guide strip are arranged in sequence below the rear side of the second positioning ring (1c), and the rear side of the grip (2) is provided with an adsorption operation hole (2c); The adsorption assembly comprises an adsorption tube (3) arranged in the gun housing, a first spring (4) sleeved on the rear end of the adsorption tube, a push rod (5) arranged on the rear side of the adsorption tube, a switch member (6) arranged on the lower side of the push rod, a second spring sleeved on the guide shaft (2a), and a third spring (8) arranged between the push rod and the gun housing; The adsorption tube (3) is sleeved inside the gun barrel, and an annular limiting shoulder (3a) is arranged on the rear side of the adsorption tube. The two ends of the first spring (4) are respectively abutted between the first annular positioning platform (1b) and the annular limiting shoulder (3a), and the inner diameter of the second positioning ring (1c) is smaller than the outer diameter of the annular limiting shoulder (3a) so as to block the adsorption tube. The switch member (6) is arranged on the guide bar to slide left and right, and a through hole (6a) is arranged on the front side of the switch member (6) so that it can be sleeved on the guide shaft (2a) and press the second spring; an L-shaped slide groove (6b) is arranged on the top of the switch member (6), and the two ends of the L-shaped slide groove (6b) point to the front and rear directions and the left and right directions respectively; a switch button portion (6c) is arranged on the side of the switch member (6) away from the guide shaft, and an opening (10) is correspondingly arranged on the housing, and the switch button portion (6c) protrudes from the opening (10); The push rod (5) is arranged at the rear side of the adsorption tube (3), and an adsorption channel which can be communicated with the adsorption tube is arranged inside the push rod, and the other end of the adsorption channel is communicated with the external adsorption device; the front end of the push rod (5) can be slidably inserted into the second positioning ring (1c), and the rear end thereof can pass through the adsorption operation hole (2c) to form a button portion (5a), and a control handle (5b) is arranged at the bottom of the push rod (5), and the control handle (5b) extends into the L-shaped slide groove (6b) to slide in the front-back or left-right direction; a connecting handle (5c) is arranged on the left or right side of the push rod, and the two ends of the third spring (8) are respectively connected to the connecting handle (5c) and the inner wall of the shell behind the connecting handle so that the push rod has a tendency to move backward; The inner wall of the gun barrel (1) is also provided with a plurality of positioning rings (1d), and the adsorption tube (3) is slidably supported by the positioning rings (1d) and the first annular positioning platform (1b); a connecting ring is provided at a position where the inner wall of the grip (2) is arranged opposite to the guide shaft (2a), and the connecting ring can be buckled onto the guide shaft (2a), and the connecting ring squeezes the switch member (6) to compress the second spring; A connecting portion (5d) is provided at the lower side of the rear end of the push rod (5), the lower end of the adsorption channel passes through the connecting portion (5d), and an adsorption connecting hose (7) is sleeved on the connecting portion (5d).

2. A disposable automatic anorectal band ligation gun according to claim 1, characterized in that: The bottom of the handle (2) is provided with a connection hole (20), and also comprises a connection pipe head, the upper end of the connection pipe head is clamped in the connection hole (20), and the lower end is connected to an external adsorption device.

3. The disposable automatic anorectal band ligation gun according to claim 1, characterized in that: The front end diameter of the adsorption tube (3) increases and extends forward to form a rubber ring connecting portion (3d).

4. A disposable automatic anorectal band ligation gun according to claim 3, characterized in that: The outer side of the front edge of the rubber ring connection part is provided with a plurality of anti-skid grooves in a circular array, and the direction of the anti-skid grooves is consistent with the movement direction of the adsorption tube; The front end diameter of the gun barrel is enlarged to form a rubber ring limiting sleeve, which surrounds the rubber ring connecting part. When the adsorption tube slides back and forth, the rubber ring connecting part can extend out or retract into the rubber ring limiting sleeve.

5. A disposable automatic anorectal band ligation gun according to claim 4, characterized in that: The shell is surrounded by a left shell and a right shell, and the rubber ring limiting sleeve is arranged on the left shell or the right shell; the front end of the right shell or the left shell on the other side is cut off.

6. A disposable automatic anorectal band ligation gun according to claim 5, characterized in that: An opening for observing and adjusting the rubber ring is arranged on the rear side of the rubber ring limiting sleeve.

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