A disposable automatic anorectal ligation stapler

Abstract

The present application belongs to the technical field of medical auxiliary equipment, and in particular, relates to a disposable automatic anorectal ligation stapler. The ligation gun includes: an L-shaped gun body and an adsorption component arranged in the gun body; the gun body includes a gun barrel and a grip on the lower side of the gun barrel; the gun body is hollow inside to form an L-shaped installation cavity, and the adsorption component is arranged inside the installation cavity; a retraction ring is arranged at the front opening of the gun barrel; the adsorption component includes: a launch tube and a push rod that can move back and forth in the gun barrel, and a switch control arranged between the push rod and the gun body; the switch control includes: a second tension spring, a third compression spring and a release switch; the internal structure of the present application has relatively few movements, a short movement stroke and a rapid response, so the impact force between the structures is small, the movement only involves a short-distance linear sliding, there is no complicated operation, and the requirements for structural materials are low, which is conducive to improving the operation speed and reducing the operation cost.

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 stapler. Background Art

[0002] Anorectal ligation stapler is a medical device that replaces traditional manual suturing. Thanks to the development of modern science and technology and the improvement of manufacturing technology, the stapler used in clinical practice has the advantages of reliable quality, easy use, fast suturing speed, fewer side effects and surgical complications compared to traditional manual ligation technology. It also enables lesion removal in tumor surgery that was previously unresectable. Its main working principle is to use elastic rubber rings and other materials to separate or anastomose the diseased tissue, so that the diseased tissue loses blood, necrotizes and finally falls off naturally. It can effectively treat various local lesions and prevent the spread of the diseased area. With the increase in usage time, many types of ligation staplers have appeared on the market, but no matter what type, their basic working principles and mechanisms are similar, all of which use various types of mechanical springs. On the one hand, its internal drive control structure is relatively complex, with many small parts. Since it is generally made of plastic material, the strength is low. It is very easy to be damaged under the strong adsorption of the adsorption device and the impact of the internal spring and other action structures, resulting in the product's unqualified rate and effectiveness during normal use. Moreover, during the use of the stapler, there must be a process of installing the rubber ring. The rubber ring uses its elastic contraction to achieve ligation and separation. Therefore, it is not advisable to keep it in a stretched state for a long time before the operation to avoid weakening of the elasticity. Therefore, it is generally assembled in real time before the operation to avoid contamination and ensure the effect of the operation. The existing problem is that the doctor still needs to directly operate the rubber ring during this process. The rubber ring is very small and elastic. It is difficult to expand and install it with one hand. It is difficult for a single person to operate it, and the installation process needs to be very slow. The small-sized elastic rubber ring is easy to lose. The existence of the above-mentioned problems may cause the use of the stapler to prolong the operation time or further increase the cost of the operation, which is not conducive to the further promotion and application of the stapler. Summary of the invention

[0003] The purpose of the present application is to provide a disposable automatic anorectal ligation stapler which has a more compact structure, a simple driving control method, good practicality, and convenient and quick rubber ring installation, and does not require the operator to directly contact the rubber ring.

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

[0005] A disposable automatic anorectal ligation stapler, comprising a ligation gun and a looper;

[0006] The ligating gun comprises: an L-shaped gun body 1 and an adsorption component arranged in the gun body 1;

[0007] The gun body 1 includes a gun barrel 1a and a grip 1b at the lower side of the gun barrel 1a; the gun body 1 is hollow inside to form an L-shaped installation cavity, and the adsorption component is arranged inside the installation cavity; a decoupling ring 1c is arranged at the front opening of the gun barrel 1a;

[0008] The adsorption assembly includes: a launch tube 2 and a push rod 3 that can move forward and backward in the gun barrel 1a, and a switch control arranged between the push rod 3 and the gun body 1;

[0009] The front end of the launch tube 2 is provided with a rubber ring support portion 2a, and the rear end is provided with an annular positioning shoulder 2b. The front side of the annular positioning shoulder 2b is provided with a first compression spring 40, and the two ends of the first compression spring 40 are respectively against the annular positioning shoulder 2b and the gun body 1;

[0010] The push rod 3 is arranged at the rear side of the launch tube 2, and a hole is arranged inside the push rod 3; the outer side of the push rod 3 is provided with a spring connection part 3a protruding outward to the left or right side and a switch connection part 3b protruding downward; the rear end of the push rod 3 extends backward from the gun body 1 to form an adsorption button part 3c;

[0011] The switch control comprises: a second tension spring 41, a third compression spring 42 and a release switch 5;

[0012] The front end of the second tension spring 41 is connected to the spring connecting portion 3a, and the rear end is connected to the gun body 1; the second tension spring 41 is in a tensioned state so that the push rod 3 has a tendency to move backward and separate from the launch tube 2;

[0013] The release switch 5 is located at the lower side of the push rod 3, and the third compression spring 42 is arranged between the release switch 5 and the gun body 1 so that the release switch 5 has a tendency to move toward the side of the gun body 1, and the tendency points to the locking direction; the release switch 5 is provided with a disengagement button portion 5a in the locking direction, and a button opening is arranged at a corresponding position on the gun body 1, and the disengagement button portion 5a extends from the button opening; an L-shaped slide is arranged on the top of the release switch 5, and the switch connecting portion 3b extends into the L-shaped slide from the top;

[0014] The coiling device comprises: a sleeve 6, a conical member 7 disposed in the sleeve 6, and a pushing member 8 disposed at the rear side of the conical member 7;

[0015] A through hole 7a is provided in the middle of the conical member 7, and a groove which can be buckled on the rubber ring support part 2a is provided at the bottom of the conical member 7; the pushing member 8 includes a connecting shaft 8a in the middle, and elastic supporting claws 8b arranged in a ring array on the outside of the connecting shaft 8a, and a limiting groove 8c is provided at the front end of the elastic supporting claws 8b. The limiting grooves 8c on each elastic supporting claw 8b constitute a rubber ring positioning structure, and the connecting shaft 8a and the rear end of the supporting claws are connected together.

[0016] A further improvement or refinement of the aforementioned disposable automatic anorectal ligation stapler, wherein the channel in the push rod 3 passes through the front end of the push rod 3 and is aligned with the rear end opening of the launch tube 2, and the rear end opening of the channel is connected to an external adsorption device;

[0017] The spring connection part 3a protrudes to the left or right; the switch connection part 3b protrudes downward; the release switch 5 is slidably arranged on the gun body 1 and is located at the lower side of the push rod 3;

[0018] The locking direction is toward the left side of the gun body 1 or toward the right side of the gun body 1 ; the two arms of the L-shaped slideway point to the locking direction and the axial direction of the push rod 3 respectively.

[0019] A further improvement or refinement of the aforementioned disposable automatic anorectal ligation stapler, when the adsorption button portion 3c is pressed, the first compression spring 40 is compressed, the second tension spring 41 is stretched, the push rod 3 is docked with the launch tube 2, the switch connection portion 3b in the L-shaped slideway slides forward along the axis direction of the push rod 3 to the corner, the third compression spring 42 is released and pushes the release switch 5 to move in the locking direction and then resists, so that the switch connection portion 3b is locked, at this time, the external adsorption device is connected with the launch tube 2 through the inner channel of the push rod 3 to form an adsorption channel so that the ligation adsorption operation can be performed;

[0020] When the disengagement button portion 5a is pressed, the release switch 5 is squeezed and moves in the opposite direction of the locking direction, the switch connecting portion 3b moves to the corner of the L-shaped slide, the third compression spring 42 is compressed, the second tension spring 41 retracts and drives the push rod 3 to move backward and disengage from the launch tube 2, and the switch connecting portion 3b returns to its original position.

[0021] A further improvement or refinement of the aforementioned disposable automatic anorectal ligation stapler is that the retraction ring 1c, the push rod 3 and the launching tube 2 are coaxially arranged; the rubber ring support portion 2a is inserted into the retraction ring 1c and extends a portion from the front end of the retraction ring 1c to support the rubber ring.

[0022] Its beneficial effects are:

[0023] When the disposable automatic anorectal ligation stapler of the present application is in use, only two buttons need to be simply pushed to connect and disconnect the ligation adsorption circuit. The internal structure has relatively few movements, short movement stroke and rapid response, so the impact force between the structures is small, and the movement only involves short-distance linear sliding. There is no complicated operation and the requirements for structural materials are low. Therefore, the material and process costs during production are low. The rubber ring is set on the ringer in advance in a sterile production environment. After the operation is unpacked, the rubber ring is quickly installed using the ringer, which is beneficial to improving the operation speed and reducing the operation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a front view (section view) of a disposable automatic anorectal ligation stapler;

[0025] Figure 2 This is an oblique view (section view) of a disposable automatic anorectal ligation stapler;

[0026] Figure 3 It is a schematic diagram of the structure of the push rod 3;

[0027] Figure 4 This is an assembly diagram of a disposable automatic anorectal ligation stapler. DETAILED DESCRIPTION

[0028] The present application is described in detail below in conjunction with specific embodiments.

[0029] The present application discloses a disposable automatic anorectal ligation stapler, which is mainly used to complete anorectal ligation surgery. Its basic structure includes a ligation gun and a ring applicator; the ligation gun is used to complete the ligation action and push the rubber ring to the ligation site, and the ring applicator is used to quickly install the rubber ring to avoid the inconvenience of manual installation of the rubber ring.

[0030] like Figure 1 , Figure 2 , Figure 4 As shown, the ligating gun comprises: an L-shaped gun body 1 and an adsorption component arranged in the gun body 1;

[0031] The gun body 1 is mainly convenient for gripping and operation. It is known that it can be processed and manufactured using various conventional processes. In order to facilitate the installation of internal adsorption components, a detachable structure is preferably used. Considering the cost and lightness of disposable products, operating comfort and environmental requirements during surgery, it is generally made of polymer materials that meet medical requirements.

[0032] The gun body 1 includes a gun barrel 1a and a grip 1b at the lower side of the gun barrel 1a; the gun body 1 is hollow inside to form an L-shaped installation cavity, and the adsorption component is arranged inside the installation cavity; a decoupling ring 1c is arranged at the front opening of the gun barrel 1a;

[0033] The adsorption assembly includes: a launch tube 2 and a push rod 3 that can move forward and backward in the gun barrel 1a, and a switch control arranged between the push rod 3 and the gun body 1;

[0034] A rubber ring support portion 2a is provided at the front end of the launch tube 2, and an annular positioning shoulder 2b is provided at the rear end. A first compression spring 40 is provided at the front side of the annular positioning shoulder 2b, and the two ends of the first compression spring 40 are respectively against the annular positioning shoulder 2b and the gun body 1; a push rod is provided at the rear side of the launch tube 2, and a hole is provided inside the push rod 3; the hole in the push rod 3 passes through the front end of the push rod 3 and is aligned with the rear end opening of the launch tube 2, and the rear end opening of the hole is connected to an external adsorption device;

[0035] The de-circling ring 1c, the pushing rod 3 and the launching tube 2 are coaxially arranged; the rubber ring supporting part 2a is inserted into the de-circling ring 1c and extends a part from the front end of the de-circling ring 1c to support the rubber ring.

[0036] Based on the above structure, when the push rod 3 moves forward, the inner channel of the push rod 3 is connected with the launch tube 2 to form an adsorption channel, and the external adsorption device can be used to adsorb the affected area tissue. When the launch tube 2 is controlled to move backward, the rubber ring sleeved on the rubber ring support part 2a is pushed out by the ring withdrawal ring 1c, and finally slides to the ligation site to complete the ligation.

[0037] like Figure 2 , Figure 3 As shown, the outer side of the push rod 3 is provided with a spring connection part 3a protruding outward to the left or right side and a switch connection part 3b protruding downward; the spring connection part 3a protrudes to the left or right side; the switch connection part 3b protrudes downward; the rear end of the push rod 3 extends backward from the gun body 1 to form an adsorption button part 3c; the switch control comprises: a second tension spring 41, a third compression spring 42 and a release switch 5; the front end of the second tension spring 41 is connected to the spring connection part 3a, and the rear end is connected to the gun body 1; the second tension spring 41 is in a tensioned state so that the push rod 3 has a tendency to move backward and disengage from the launch tube 2; the release switch 5 The gun body 1 is slidable left and right and is located at the lower side of the push rod 3; the third compression spring 42 is arranged between the release switch 5 and the gun body 1 so that the release switch 5 has a tendency to move to one side of the gun body 1, and the tendency points to the locking direction; the locking direction points to the left side of the gun body 1 or the right side of the gun body 1; the release switch 5 is provided with a disengagement button portion 5a in the locking direction, and a button opening is provided at a corresponding position on the gun body 1, and the disengagement button portion 5a extends from the button opening; an L-shaped slide is provided on the top of the release switch 5, and the two arms of the L-shaped slide point to the locking direction and the axial direction of the push rod 3 respectively, and the switch connecting portion 3b extends into the L-shaped slide from the top;

[0038] Based on the above structure, when the adsorption button part 3c is pressed, the first compression spring 40 is compressed, the second tension spring 41 is stretched, the push rod 3 is docked with the launch tube 2, and the switch connection part 3b in the L-shaped slideway slides forward to the corner along the axis direction of the push rod 3. The third compression spring 42 is released and pushes the release switch 5 to move in the locking direction and then resists, so that the switch connection part 3b is locked. At this time, the external adsorption device is connected with the launch tube 2 through the inner channel of the push rod 3 to form an adsorption channel so that the ligation adsorption operation can be performed;

[0039] When the disengagement button portion 5a is pressed, the release switch 5 is squeezed and moves in the opposite direction of the locking direction, the switch connecting portion 3b moves to the corner of the L-shaped slide, the third compression spring 42 is compressed, the second tension spring 41 retracts and drives the push rod 3 to move backward and disengage from the launch tube 2, and the switch connecting portion 3b returns to its original position.

[0040] Through scientific structural design and settings that conform to human hand operation habits, doctors can start and end the adsorption action with one hand. The whole process requires small movements and fast reactions, with little impact on patients.

[0041] like Figure 2 , Figure 4 As shown, the coiling device includes: a sleeve 6, a conical member 7 disposed in the sleeve 6, and a pushing member 8 disposed at the rear side of the conical member 7;

[0042] A through hole 7a is provided in the middle of the conical member 7, and a groove 7b which can be buckled on the rubber ring support part 2a is provided at the bottom of the conical member 7; the pushing member 8 includes a connecting shaft 8a in the middle, and elastic supporting claws 8b arranged in a ring array on the outside of the connecting shaft 8a, and a limiting groove 8c is provided at the front end of the elastic supporting claws 8b. The limiting grooves 8c on each elastic supporting claw 8b constitute a rubber ring positioning structure, and the connecting shaft 8a and the rear ends of each elastic supporting claw are connected together.

[0043] Based on the above structure, the rubber ring can be quickly pushed to the front end of the launch tube 2 using a ring applicator, which can be operated with one hand, thus solving the problem of the rubber ring being difficult to install, increasing the speed of the operation and reducing the preparation time of the ligation device.

[0044] 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 ligation stapler. It is characterized in that Including ligature gun and looper; The ligating gun comprises: an L-shaped gun body and an adsorption component arranged in the gun body; The gun body includes a gun barrel and a grip on the lower side of the gun barrel; the gun body is hollow inside to form an L-shaped installation cavity, and the adsorption component is arranged inside the installation cavity; a de-ring ring is arranged at the front opening of the gun barrel; The adsorption assembly includes: a launch tube and a push rod that can move forward and backward in the gun barrel, and a switch control arranged between the push rod and the gun body; A rubber ring support portion is provided at the front end of the launch tube, and an annular positioning shoulder is provided at the rear end. A first compression spring is provided at the front side of the annular positioning shoulder, and two ends of the first compression spring are respectively against the annular positioning shoulder and the gun body; The push rod is arranged at the rear side of the launch tube, and a hole is arranged inside the push rod; a spring connection part protruding outward to the left or right side and a switch connection part protruding downward are arranged on the outer side of the push rod; the rear end of the push rod extends backward from the gun body to form an adsorption button part; The switch control comprises: a second tension spring, a third compression spring and a release switch; The front end of the second tension spring is connected to the spring connecting portion, and the rear end is connected to the gun body; the second tension spring is in a tensioned state so that the push rod has a tendency to move backward and separate from the launch tube; The release switch is located at the lower side of the push rod, and the third compression spring is arranged between the release switch and the gun body so that the release switch has a tendency to move toward one side of the gun body, and the tendency points to the locking direction; the release switch is provided with a disengagement button portion in the locking direction, and a button opening is arranged at a corresponding position on the gun body, and the disengagement button portion extends from the button opening; an L-shaped slide is arranged on the top of the release switch, and the switch connecting portion extends into the L-shaped slide from the top; The coiling device comprises: a sleeve, a conical member arranged in the sleeve, and a pushing member arranged at the rear side of the conical member; A through hole is provided in the middle of the conical member, and a groove which can be buckled on the rubber ring support part is provided at the bottom of the conical member; the pushing member includes a connecting shaft in the middle, and elastic supporting claws arranged in a ring array on the outside of the connecting shaft, and a limiting groove is provided at the front end of the elastic supporting claw, and the limiting grooves on each elastic supporting claw constitute a rubber ring positioning structure, and the connecting shaft and the rear end of the elastic supporting claw are connected together; The hole in the push rod passes through the front end of the push rod and is aligned with the rear end opening of the launch tube, and the rear end opening of the hole is connected to the external adsorption device; The spring connection portion protrudes to the left or right side; The switch connecting portion protrudes downward; The release switch is slidably arranged on the gun body and is located at the lower side of the push rod; The locking direction is toward the left side of the gun body or toward the right side of the gun body; The two arms of the L-shaped slideway point to the locking direction and the axis direction of the push rod respectively; The backing ring, the pushing rod and the launching tube are coaxially arranged; the rubber ring supporting part is inserted into the backing ring and a part is extended from the front end of the backing ring to support the rubber ring.

2. A disposable automatic anorectal ligation stapler according to claim 1, It is characterized in that When the adsorption button is pressed, the first compression spring is compressed, the second tension spring is stretched, the push rod is docked with the launch tube, the switch connection part in the L-shaped slideway slides forward to the corner along the axis direction of the push rod, the third compression spring is released and pushes the release switch to move in the locking direction and then resists, so that the switch connection part is locked, at this time, the external adsorption device is connected with the launch tube through the hole in the push rod to form an adsorption channel so that the ligation adsorption operation can be performed; When the disengagement button is pressed, the release switch is squeezed and moves in the opposite direction of the locking direction, the switch connecting part moves to the corner of the L-shaped slide, the third compression spring is compressed, the second tension spring retracts and drives the push rod to move backward and disengage from the launch tube, and the switch connecting part returns to its original position.

Images