A self-decompression structure and a ligation device comprising the same

Abstract

The present application relates to the technical field of ligation device structure design, and particularly relates to a self-pressure-releasing structure and a ligation device containing the same. The ligation device comprises a connecting piece, a tee pipe and a blocking piece. The tee pipe is fixedly arranged on the shell of the ligation device, and the three pipe openings of the tee pipe are in communication with each other. The first pipe opening is in communication with an external negative pressure suction device through an air pipe, the second pipe opening is in communication with a negative pressure suction pipe of the ligation device through an air pipe, and the third pipe opening is directed to the connecting piece. The blocking piece blocks the third pipe opening to maintain the negative pressure in the channel, and is connected to the connecting piece. The connecting piece can swing or move linearly, and when swinging or moving to a certain position, the blocking piece is separated from the third pipe opening to release the negative pressure. The present application can be used for optimization and improvement of various types of ligation devices and other instruments. Without the need for complex structural changes or upgrades, the original production line can be used for low-cost investment to effectively improve the use experience of the product.

Description

Technical Field

[0001] This invention relates to the field of ligation device structure design technology, specifically to a self-relieving structure and a ligation device containing the structure. Background Technology

[0002] Traditional banding devices typically employ independent control mechanisms for pressure release. For example, invention CN115721386A, a miniature release valve for intelligent banding devices, uses a valve structure to achieve pressure release. Invention CN112587192A, a disposable automatic anorectal banding stapler, provides a simple pressure release structure, but requires manual removal of the rear pin. Invention CN217744523U, an automatic retraction and cutting hemorrhoid banding device, uses a side-pressing pressure release structure. Although the structures differ, current self-releasing structures generally employ independent control, requiring manual pressure release after banding and adsorption. This makes it impossible to link with highly automated and continuous negative pressure adsorption banding actions, resulting in complex structures, multiple control mechanisms, and inconvenience for use. Summary of the Invention

[0003] The purpose of this invention is to provide a self-releasing structure and a ligator containing the structure to achieve continuous execution of negative pressure adsorption, ligation, and negative pressure release actions based on practical needs, thus providing a structural basis for the ligator to achieve automatic delayed release and continuous operation.

[0004] To achieve the above objectives, the present invention adopts the following technical solution.

[0005] This application relates to a self-relieving pressure structure, the main structure of which includes a connector 1, a tee pipe 2, and a sealing component 3;

[0006] The three-way tube 2 is fixedly installed on the housing of the bandage device. The three ports of the three-way tube 2 are interconnected. The first port is connected to the external negative pressure adsorption device through the air pipe, the second port is connected to the negative pressure adsorption tube 9 of the bandage device through the air pipe, and the third port points to the connector 1.

[0007] The sealing component 3 blocks the third pipe opening to maintain negative pressure in the channel and is connected to the connector 1;

[0008] The connector 1 can swing or move in a straight line, and when it swings or moves to a certain position, it causes the sealing component 3 to detach from the third pipe port and release the negative pressure.

[0009] In a further improved or preferred embodiment of the aforementioned self-relieving pressure structure, the sealing element 3 refers to a sealing plate or sealing head that can cover the third pipe opening under negative pressure. The sealing plate or sealing head is made of a soft material, which is one of rubber, silicone, TPE, TPU, or soft PVC.

[0010] In a further improved or preferred embodiment of the aforementioned self-relieving pressure structure, the connecting member 1 refers to an elastic connecting arm, elastic line, or compression spring that connects the sealing member 3 and the linearly movable drive device inside the ligator.

[0011] A ligator incorporating the aforementioned self-relieving structure, employing a gun-type ligator structure, includes a ligator gun body with a trigger 8, characterized in that the connecting member 1 refers to an elastic connecting arm 1a, elastic wire, or compression spring extending from the back of the trigger 8.

[0012] In a further or preferred embodiment of the aforementioned ligator, the elastic connecting arm 1a bends and stores force during the firing of the trigger 8, and causes the sealing member 3 to detach from the third port after the trigger 8 swings to a certain angle; or the elastic wire or compression spring is stretched to a certain distance to cause the sealing member 3 to detach from the third port.

[0013] In a further or preferred embodiment of the aforementioned ligator, the sealing element 3 refers to the elastic rubber sheet 30, the connecting element 1 refers to the elastic connecting arm 1a extending from the back of the trigger 8 of the pistol ligator; the three-way tube 2 is disposed inside the buttstock of the pistol ligator, and the third port of the three-way tube 2 points towards the trigger 8.

[0014] The elastic connecting arm 1a extends backward from the back of the trigger 8, and its end is provided with a buckle 1b for clamping the elastic rubber sheet 30; the buckle 1b clamps the lower end of the elastic rubber sheet 30, and when the trigger 8 is fired, the elastic connecting arm 1a stores force and finally drives the elastic rubber sheet 30 to disengage from the third port.

[0015] Its beneficial effects are as follows:

[0016] This application provides a simple and easy-to-implement self-releasing pressure control structure for ligators, which can be used in conjunction with existing automatic firing or driving devices or structures of ligators to further realize one-button completion of adsorption ligation and negative pressure release operations, further reducing operation steps, shortening operation time, and improving operation efficiency. Its simple, lightweight, and low-cost structure can be used for the optimization and improvement of various types of ligators and other instruments. Without the need for complex structural changes or upgrades, the user experience of the product can be effectively improved with low-cost investment using the existing production line. Attached Figure Description

[0017] Figure 1 This is a front view of Embodiment 1;

[0018] Figure 2 This is a partial view of Embodiment 1;

[0019] Figure 3 This is a side view of Embodiment 1;

[0020] Figure 4 This is a perspective view of Embodiment 1, including the prior art structure;

[0021] The reference numerals in the attached figures include:

[0022] Connector 1, elastic connecting arm 1a, buckle 1b, tee pipe 2, sealing component 3, elastic rubber sheet 30, trigger 8, negative pressure adsorption tube 9. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0024] This application provides a self-releasing pressure structure that is easy to operate, simple in structure, and lightweight. It is used to quickly release the negative pressure in the negative pressure adsorption tube after various ligation devices have completed negative pressure adsorption and elastic coil ligation, usually within a few periods of time, so as to facilitate the removal of the ligation device and proceed to the next step.

[0025] Therefore, this application provides a self-releasing structure that is simple in structure, easy to use, and capable of continuous operation with adsorption and bandaging actions, such as... Figure 1 As shown, its main structure includes a connector 1, a tee pipe 2, and a sealing component 3;

[0026] The three-way tube 2 is fixedly installed on the housing of the bandage device. The three ports of the three-way tube 2 are interconnected. The first port is connected to the external negative pressure adsorption device through the air pipe, the second port is connected to the negative pressure adsorption tube 9 of the bandage device through the air pipe, and the third port points to the connector 1.

[0027] The sealing component 3 blocks the third pipe opening to maintain negative pressure in the channel and is connected to the connector 1;

[0028] The connector 1 can swing or move in a straight line, and when it swings or moves to a certain position, it causes the sealing component 3 to detach from the third port to release the negative pressure.

[0029] During application, the three-way tube 2 is used to continuously provide a negative pressure environment for the adsorption tube during the adsorption process to complete the adsorption operation. Finally, the negative pressure is disconnected. Traditional solutions generally use independent and controllable buttons or other structures to control the negative pressure in the adsorption tube.

[0030] In this application, after adsorption is completed, the negative pressure in the three-way pipe is controlled by the sealing component 3. In actual use, the sealing component is disconnected by the connector 1 connected to the movable part or structure inside the ligator so that the third pipe port can be directly connected to the external environment, thereby generating a variety of implementation methods.

[0031] Example 1

[0032] As a preferred embodiment, this application provides a ligator with a self-releasing structure based on a gun-type ligator. The core of the gun-type ligator lies in the one-button operation of adsorption and ligation achieved by releasing or driving the internal adsorption and ligation structures through trigger pulling. Currently, the adsorption control operation of gun-type ligators is achieved through independent mechanisms similar to... Figure 4 The control is achieved by a button control device located at the lower handle position. For existing technical solutions such as one-click adsorption ligation of related ligators, refer to the applicant's series of ligator patents (such as CN110251206A Adjustable buckle structure of an elastic thread ligator, etc.).

[0033] like Figure 1 , Figure 3 As shown, in order to achieve linkage with one-button operation, the technical solution of this application uses the action of trigger 8 to link and control the action of connector 1 to control negative pressure release. However, the correct action sequence of the gun-type bandage is: trigger firing - adsorption operation - bandage operation - negative pressure release. That is, there is a delay between trigger firing and negative pressure release. Based on this type of bandage, it is generally in the range of a few tenths of a second to one second. This delay is sufficient for the adsorption operation and bandage operation to be executed in sequence. Although the time is short, it must exist and the order cannot be disordered. Therefore, connector 1 should have a delay function in the device. Due to the existence of negative pressure in the three-way pipe, the sealing component 3 will be adsorbed at the third pipe opening. Only when the external pulling force exceeds the negative pressure adsorption force and the external positive pressure can the sealing component be released.

[0034] Therefore, as a preferred embodiment, in this embodiment, the connector 1 is implemented by using an elastic connecting arm 1a extending from the back of the trigger 8.

[0035] By connecting one end of the connector 1 to the sealing member and the other end to the appropriate position of the trigger, the connector 1 is kept in a natural or low-stress state when the trigger is not fired, and after the trigger is fired, it stores force until it reaches a high-stress state to disengage the sealing member.

[0036] For example, when the elastic connecting arm 1a structure is adopted, the elastic connecting arm 1a bends and stores force during the firing of the trigger 8. After the ligator quickly completes the suction and ligation action at the moment the trigger is fired, the trigger 8 continues to swing to a certain angle, which increases the stress and drives the sealing part 3 to detach from the third pipe. By controlling the elastic modulus of the material and the deformation size, a suitable delay time can be controlled to complete the continuous operation.

[0037] like Figure 2As shown, as a preferred solution, in order to ensure the negative pressure sealing effect and facilitate implementation, the sealing component 3 in this embodiment adopts an elastic rubber sheet 30, and the connecting component 1 refers to the elastic connecting arm 1a extending from the back of the trigger 8 of the gun-type lacing device; the three-way pipe 2 is set inside the buttstock of the gun-type lacing device, and the third port of the three-way pipe 2 points to the trigger 8.

[0038] like Figure 2 , Figure 3 As shown, as a further improvement, to facilitate structural design and assembly, the elastic connecting arm 1a in this embodiment extends backward from the back of the trigger 8, and its end is provided with a buckle 1b for clamping the elastic rubber sheet 30; the buckle 1b clamps the lower end of the elastic rubber sheet 30, and when the trigger 8 is fired, the elastic connecting arm 1a stores force and finally drives the elastic rubber sheet 30 to disengage from the third port.

[0039] Example 2

[0040] The difference from the aforementioned embodiment 1 is that the connector 1 uses an elastic cord or a compression spring. During use, the elastic cord or compression spring is stretched to a certain distance, increasing the tension and ultimately causing the sealing component 3 to detach from the third port. By controlling the material's elastic modulus and deformation dimensions, a suitable delay time can be controlled to achieve continuous operation.

[0041] In this embodiment, the sealing element 3 refers to a sealing plate or sealing head that can cover the third pipe opening under negative pressure. In order to ensure the stability of the internal negative pressure environment of the third pipe opening during the adsorption process, the sealing plate or sealing head should be made of soft material. As a low-cost and easy-to-implement method, the soft material preferably refers to one of rubber, silicone, TPE, TPU, or soft PVC.

[0042] Example 3

[0043] The difference from the previous embodiments is that, in order to meet the use of other types or structural designs of ligators and at the same time achieve the delayed triggering effect, in this embodiment, the connector 1 is connected to other swingable or linearly moving drive structures in such ligators, and the swing or linear movement of the drive structure causes the elastic connecting arm, elastic wire or compression spring to store force and delay the triggering of the separation of the third port from the sealing member 3.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A self-relieving pressure structure, characterized in that, Includes connector (1), tee pipe (2), and sealing component (3); The three-way tube (2) is fixedly installed on the housing of the bandage device. The three ports of the three-way tube (2) are interconnected. The first port is connected to the external negative pressure adsorption device through the air pipe, the second port is connected to the negative pressure adsorption tube (9) of the bandage device through the air pipe, and the third port points to the connector (1). The plug (3) blocks the third pipe opening to maintain negative pressure in the channel and is connected to the connector (1). The connector (1) can swing or move in a straight line, and when it swings or moves to a certain position, the sealing component (3) is disengaged from the third port to release the negative pressure.

2. The self-relieving pressure structure according to claim 1, characterized in that, The sealing component (3) refers to a sealing plate or sealing head that can cover the third pipe opening under negative pressure. The sealing plate or sealing head is made of soft material, which refers to one of rubber, silicone, TPE, TPU, or soft PVC.

3. The self-relieving pressure structure according to claim 1, characterized in that, The connecting element (1) refers to the elastic connecting arm, elastic line or compression spring between the connecting sealing element (3) and the linearly movable drive device inside the ligator.

4. A ligator comprising the self-relieving structure of claim 1 or 2, employing a gun-type ligator structure, comprising a ligator gun body equipped with a trigger (8), characterized in that, The connector (1) refers to an elastic connecting arm (1a), elastic line, or compression spring extending from the back of the trigger (8).

5. The ligation device according to claim 4, characterized in that, The elastic connecting arm (1a) bends and stores force during the firing of the trigger (8), and after the trigger (8) swings to a certain angle, the sealing element (3) is disengaged from the third port; or the elastic line or compression spring is stretched to a certain distance, causing the sealing element (3) to disengage from the third port.

6. The ligation device according to claim 4, characterized in that, The sealing element (3) refers to the elastic rubber sheet (30), and the connecting element (1) refers to the elastic connecting arm (1a) extending from the back of the trigger (8) of the gun-type sling; the three-way tube (2) is located inside the buttstock of the gun-type sling, and the third port of the three-way tube (2) points to the trigger (8). The elastic connecting arm (1a) extends backward from the back of the trigger (8), and its end is provided with a buckle (1b) for clamping the elastic rubber sheet (30); the buckle (1b) clamps the lower end of the elastic rubber sheet (30), and when the trigger (8) is fired, the elastic connecting arm (1a) stores force and finally drives the elastic rubber sheet (30) to disengage from the third port.

Images