Sealing structure of disposable haemorrhoids loop ligature anastomat

Abstract

The utility model provides a sealing structure of a disposable haemorrhoids loop ligature anastomat, and belongs to the technical field of haemorrhoids loop ligature anastomats. The sealing structure of the disposable haemorrhoids loop ligature anastomat comprises a gun barrel, an inner tube is slidably connected in the gun barrel, an elastic rubber sleeve is arranged between the head end of the gun barrel and the inner tube, the inner end of the rubber sleeve is fixedly connected with the gun barrel, the outer circle of the inner tube is slidably connected with the inner circle of the rubber sleeve, and the outer circle of the rubber sleeve is fixedly connected with the gun barrel. A push-pull piece is arranged at the rear end of the gun barrel to drive the inner pipe to move axially. In the application, the elastic rubber sleeve is arranged at the opening part of the gun barrel to improve the sealing performance of the opening part of the gun barrel, the inner tube is pushed to move axially through the push-pull piece, more rubber sleeve parts are exposed, the inner tube is better attached to the root part of the internal hemorrhoid, the sealing performance is further improved, and the internal hemorrhoid is better sucked in.

Description

Technical Field

[0001] The present application relates to the technical field of hemorrhoid ligation staplers, and in particular to a sealing structure of a disposable hemorrhoid ligation stapler. Background Art

[0002] Hemorrhoid ligation stapler is a medical device used to treat internal hemorrhoids. Its working principle is to suck the internal hemorrhoids through the barrel, and then use a special elastic ring to ligate the root of the internal hemorrhoids, so that the hemorrhoids are ischemic, necrotic and fall off, thereby achieving the purpose of treatment. For example, Chinese patent application number CN201921153015.6 discloses an automatic elastic line hemorrhoid ligation stapler. The gun head of this scheme is divided into a simple tube mouth, but the actual anus is not flat because of the presence of internal hemorrhoids, and the fixed tube mouth cannot fit the skin well, resulting in poor sealing, which affects the vacuum suction of internal hemorrhoids. Utility Model Content

[0003] In order to make up for the above shortcomings, the present application provides a disposable hemorrhoid ligation stapler sealing structure, aiming to improve the problems mentioned in the above background technology.

[0004] An embodiment of the present application provides a disposable hemorrhoid ligation stapler sealing structure, comprising a gun barrel, an inner tube slidably connected to the gun barrel, an elastic rubber sleeve arranged between the head end of the gun barrel and the inner tube, the inner end of the rubber sleeve fixedly connected to the gun barrel, the outer circle of the inner tube slidably connected to the inner circle of the rubber sleeve, and a push-pull member arranged at the rear end of the gun barrel to drive the inner tube to move axially.

[0005] In a specific embodiment, the rubber sleeve gradually becomes thinner from the inner end to the outer end.

[0006] In the above implementation process, the outer end of the rubber sleeve becomes thinner and has better deformation ability, making it easier to fit the skin.

[0007] In a specific embodiment, the outer end of the rubber sleeve protrudes from the end surfaces of the gun barrel and the inner tube.

[0008] In the above implementation process, when the inner tube is not retracted, the rubber sleeve also remains partially exposed, which is used to improve the softness of the barrel mouth and thus improve the sealing. It should be noted that the inner tube cannot be retracted at the beginning, otherwise most of the rubber sleeve will leak out and is too soft, and will be tightly stuck at the root of the internal hemorrhoids, preventing the internal hemorrhoids from being sucked into the barrel. The internal hemorrhoids should be sucked in first, and when they cannot be sucked in anymore, part of the rubber sleeve should be released according to the situation, so that as many internal hemorrhoids as possible can be sucked in.

[0009] In a specific embodiment, the inner circle of the gun barrel and the outer circle of the inner tube are both provided with sealing rings.

[0010] In the above implementation process, the two sealing rings are used to improve the sealing between the gun barrel and the inner tube, and also to play the role of axial limiting.

[0011] In a specific embodiment, the push-pull member includes a spiral coil and a rotating coil, the rotating coil is rotatably connected to the inner tube, the spiral coil is fixedly connected to the rotating coil, and the spiral coil is threadedly connected to the gun barrel.

[0012] In the above implementation process, the axial displacement is generated by rotating the rotating circle and the spiral ring, thereby pushing the inner tube to move axially.

[0013] In a specific embodiment, the outer circle of the rotating circle is provided with anti-slip grooves.

[0014] In the above implementation process, the outer circle of the rotating circle protrudes from the external gun body structure, which is convenient for controlling the contraction of the inner tube by moving the fingers.

[0015] In a specific embodiment, a polygonal structure is provided at the rear end of the inner tube.

[0016] In the above implementation process, the hexagonal structure cooperates with the external gun body to achieve a circumferential fixing effect. When rotating in a circle, the inner tube will not be driven to rotate due to friction, thereby reducing the friction between the inner tube and the rubber sleeve.

[0017] In a specific embodiment, a hose is provided at the rear end of the inner tube.

[0018] In the above implementation process, the hose is used to connect with the external air extraction port, so that the inner tube can maintain a good seal when moving.

[0019] Compared with the prior art, the beneficial effects of the present application are: an elastic rubber sleeve is arranged at the mouth of the gun barrel to improve the sealing of the mouth of the gun barrel, and the inner tube is pushed axially by the push-pull member to leak out more rubber sleeve parts, better fit the root of the internal hemorrhoids, further improve the sealing, and better suck the internal hemorrhoids. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of a sealing structure of a disposable hemorrhoid ligation stapler provided in an embodiment of the present application from a first perspective;

[0022] Figure 2A schematic diagram of a sealing structure of a disposable hemorrhoid ligation stapler provided in an embodiment of the present application from a second viewing angle;

[0023] Figure 3 A schematic cross-sectional view of a normal state of an inner tube provided in an embodiment of the present application;

[0024] Figure 4 A schematic cross-sectional view of the inner tube in a retracted state provided in an embodiment of the present application.

[0025] In the figure: 10 - gun barrel; 20 - inner tube; 30 - rubber sleeve; 40 - push-pull member; 41 - screw coil; 42 - rotating circle; 43 - anti-slip pattern; 50 - sealing ring; 60 - hose. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0027] See also Figure 1-Figure 4 The present application provides a disposable hemorrhoid ligation stapler sealing structure, including a gun barrel 10, an inner tube 20 is slidably connected inside the gun barrel 10, an elastic rubber sleeve 30 is arranged between the head end of the gun barrel 10 and the inner tube 20, the inner end of the rubber sleeve 30 is fixedly connected to the gun barrel 10, the outer circle of the inner tube 20 is slidably connected to the inner circle of the rubber sleeve 30, and a push-pull member 40 is arranged at the rear end of the gun barrel 10 to drive the inner tube 20 to move axially. Among them, an elastic rubber sleeve 30 is arranged at the mouth of the gun barrel 10 to improve the sealing performance of the mouth of the gun barrel 10, and the inner tube 20 is pushed axially by the push-pull member 40, so that more rubber sleeve 30 parts are leaked, which better fits the root of the internal hemorrhoids, further improves the sealing performance, and better sucks the internal hemorrhoids.

[0028] See also Figure 1-Figure 4 The rubber sleeve 30 gradually becomes thinner from the inner end to the outer end. The outer end of the rubber sleeve 30 becomes thinner, which has better deformation ability and is easier to fit the skin.

[0029] See also Figure 1-Figure 4 , the outer end of the rubber sleeve 30 protrudes from the end faces of the gun barrel 10 and the inner tube 20. When the inner tube 20 is not retracted, the rubber sleeve 30 also remains partially exposed, which is used to improve the softness of the mouth of the gun barrel 10, thereby improving the sealing performance. It should be noted that the inner tube 20 cannot be retracted at the beginning, otherwise most of the rubber sleeve 30 will leak out. It is too soft and will be tightly stuck at the root of the internal hemorrhoids, preventing the internal hemorrhoids from being sucked into the gun barrel 10. The internal hemorrhoids should be sucked in first, and when they cannot be sucked in, part of the rubber sleeve 30 should be released according to the situation, so that as much internal hemorrhoids as possible can be sucked in.

[0030] See also Figure 1-Figure 4 The inner circle of the gun barrel 10 and the outer circle of the inner tube 20 are both provided with sealing rings 50. The two sealing rings 50 are used to improve the sealing between the gun barrel 10 and the inner tube 20, and are also used to play the role of axial limiting.

[0031] See also Figure 1-Figure 4 The push-pull member 40 includes a spiral coil 41 and a rotating coil 42, the rotating coil 42 is rotatably connected to the inner tube 20, the spiral coil 41 is fixedly connected to the rotating coil 42, and the spiral coil 41 is screwed to the gun barrel 10. The axial displacement is generated by rotating the rotating coil 42 and the spiral coil 41, thereby pushing the inner tube 20 to move axially.

[0032] See also Figure 1-Figure 4 The outer circle of the rotating circle 42 is provided with anti-skid patterns 43. The outer circle of the rotating circle 42 protrudes from the external gun body structure, which is convenient for controlling the contraction of the inner tube 20 by finger manipulation.

[0033] See also Figure 1-Figure 4 The rear end of the inner tube 20 is provided with a polygonal structure. The hexagonal structure cooperates with the external gun body to achieve a circumferential fixing effect. When the circle 42 rotates, the inner tube 20 will not be driven to rotate due to friction, thereby reducing the friction between the inner tube 20 and the rubber sleeve 30.

[0034] See also Figure 1-Figure 4 , a hose 60 is provided at the rear end of the inner tube 20. The hose 60 is used to be connected to an external air extraction port, so that the inner tube 20 can maintain a good seal when moving.

[0035] The working principle of the sealing structure of the disposable hemorrhoid ligation stapler is as follows: when the inner tube 20 does not retract, the rubber sleeve 30 also remains partially exposed, which is used to improve the softness of the mouth of the gun barrel 10 and thus improve the sealing performance. When it is felt that there is still air leakage, the rotating circle 42 is rotated to make the spiral ring 41 rotate, thereby generating axial movement, pushing the inner tube 20 to retract, and the rubber sleeve 30 shrinks inwardly under the combined action of elastic force and negative pressure and fits tightly to the root of the internal hemorrhoids, having a larger elastic range, playing a role in improving the sealing and playing a better adsorption role. After the rubber sleeve 30 shrinks toward the center, it will also move slightly backward due to its own soft characteristics, playing an effect of pulling the internal hemorrhoids inward, so as to better suck the internal hemorrhoids. In summary, an elastic rubber sleeve 30 is arranged at the mouth of the gun barrel 10 to improve the sealing performance of the mouth of the gun barrel 10, and the inner tube 20 is pushed to move axially by the push-pull member 40, so that more parts of the rubber sleeve 30 are leaked, which better fits the root of the internal hemorrhoids, further improves the sealing performance, and better sucks the internal hemorrhoids.

[0036] The above are only embodiments of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, improvement or equivalent replacement made within the spirit and principle of the present application shall be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A disposable hemorrhoid ligation stapler sealing structure, comprising a barrel (10), characterized in that: An inner tube (20) is slidably connected inside the gun barrel (10), an elastic rubber sleeve (30) is arranged between the head end of the gun barrel (10) and the inner tube (20), the inner end of the rubber sleeve (30) is fixedly connected to the gun barrel (10), the outer circle of the inner tube (20) is slidably connected to the inner circle of the rubber sleeve (30), and a push-pull member (40) is arranged at the rear end of the gun barrel (10) to drive the inner tube (20) to move axially.

2. The sealing structure of the disposable hemorrhoid ligation stapler according to claim 1, characterized in that: The rubber sleeve (30) gradually becomes thinner from the inner end to the outer end.

3. The sealing structure of the disposable hemorrhoid ligation stapler according to claim 2, characterized in that: The outer end of the rubber sleeve (30) protrudes from the end surfaces of the gun barrel (10) and the inner tube (20).

4. The sealing structure of the disposable hemorrhoid ligation stapler according to claim 3, characterized in that: The inner circle of the gun barrel (10) and the outer circle of the inner tube (20) are both provided with sealing rings (50).

5. The sealing structure of the disposable hemorrhoid ligation stapler according to claim 4, characterized in that: The push-pull member (40) comprises a spiral coil (41) and a rotating coil (42), wherein the rotating coil (42) is rotationally connected to the inner tube (20), the spiral coil (41) is fixedly connected to the rotating coil (42), and the spiral coil (41) is threadedly connected to the gun barrel (10).

6. The sealing structure of the disposable hemorrhoid ligation stapler according to claim 5, characterized in that: The outer circle of the rotating circle (42) is provided with anti-slip grooves (43).

7. The sealing structure of the disposable hemorrhoid ligation stapler according to claim 6, characterized in that: The rear end of the inner tube (20) is provided with a polygonal structure.

8. The sealing structure of the disposable hemorrhoid ligation stapler according to claim 7, characterized in that: A hose (60) is provided at the rear end of the inner tube (20).

Images