Anorectal ligation device

Abstract

The anorectum loop ligature device comprises a gun body, a gun barrel and an elastic thread, the gun body is connected with the gun barrel, the gun barrel comprises a negative pressure tube, an elastic thread tightening device is arranged on the gun body, one end of the elastic thread is arranged at the end of the negative pressure tube in a sleeving mode, and the other end of the elastic thread is fixed to the elastic thread tightening device; and when the elastic thread tightening device tightens the elastic thread, the elastic thread is separated from the end part of the negative pressure tube. The elastic thread is tightened through the elastic thread tightening device, so that the elastic thread is separated from the end of the negative pressure tube, an inner tube and an outer tube do not need to be arranged, and the problem that discomfort is brought to a patient when the outer tube is pushed is solved.

Description

Technical Field

[0001] The invention relates to an anorectal ligation device. Background Art

[0002] The band ligation device is a medical device mainly used to treat internal hemorrhoids. By putting a special rubber band on the root of the internal hemorrhoids, it blocks its blood supply, causing the internal hemorrhoid tissue to necrotize and fall off, thus achieving the purpose of treatment. This method has little trauma and fast recovery, and is currently a commonly used non-surgical treatment method in clinical practice.

[0003] The existing band ligation devices are all constructed by sleeve-connecting an outer tube to the outer side of an inner tube, sleeve-mounting one end of a rubber band or elastic wire at the end of the inner tube, and activating a gun body to push the outer tube axially, so that the outer tube pushes the rubber band or elastic wire away from the inner tube and sleeves the root of the internal hemorrhoid. However, this type of band ligation device may cause certain discomfort to the patient during the process of pushing the outer tube, especially when the hemorrhoid is deep or the patient is sensitive. Summary of the invention

[0004] The purpose of the present invention is to provide an anorectal ligation device to solve the technical problems mentioned in the above background technology.

[0005] The technical solution to achieve the purpose of the present invention is: an anorectal ligation device, including a gun body, a gun barrel and an elastic line, the gun body is connected to the gun barrel, the gun barrel includes a negative pressure tube, and an elastic line tightening device is provided on the gun body, one end of the elastic line is sleeved on the end of the negative pressure tube, and the other end is fixed to the elastic line tightening device; when the elastic line tightening device tightens the elastic line, the elastic line detaches from the end of the negative pressure tube.

[0006] Furthermore, the gun barrel also includes an elastic wire tube, which is arranged on one side of the negative pressure tube, and the middle part of the elastic wire is arranged in the elastic wire tube; a fuse device is arranged in the elastic wire tube.

[0007] Furthermore, the negative pressure tube includes a negative pressure tube body and a gun head, the negative pressure tube body is connected to the gun head, one end of the elastic line is sleeved on the gun head, the elastic line tube has a first support portion extending axially along the gun head, and the first support portion supports the elastic line.

[0008] Furthermore, a tightening slope is provided at the end of the gun head, and the tightening slope is provided on a side of the gun head away from the first supporting portion.

[0009] Furthermore, an anti-slip boss is provided on the tightening inclined surface.

[0010] Furthermore, an elastic wire passing groove is provided on one side of the gun head close to the first supporting portion, and the bottom surface of the elastic wire passing groove matches the bottom of the tightening inclined surface.

[0011] Furthermore, the length of the first support portion extending along the axial direction of the gun head is greater than the length from the bottom of the tightening slope to the elastic line tube, and is less than the length from the end of the gun head to the elastic line tube.

[0012] Furthermore, the negative pressure tube is overall "L"-shaped, and the axis of the negative pressure tube body forms an angle with the axis of the gun head.

[0013] Furthermore, a second supporting portion is provided on a side of the gun head close to the first supporting portion, and the second supporting portion is suitable for supporting the first supporting portion.

[0014] Furthermore, the elastic line tightening device includes a tightening drive device and a tightening wheel, the tightening drive device is transmission-connected to the tightening wheel, and the other end of the elastic line is wound around the tightening wheel.

[0015] By adopting the above technical solution, the present invention has the following beneficial effects:

[0016] (1) The present invention tightens the elastic wire through the elastic wire tightening device, so that the elastic wire is detached from the end of the negative pressure tube, and there is no need to set up an inner tube and an outer tube, thereby solving the problem of discomfort to the patient when pushing the outer tube.

[0017] (2) In the present invention, the first supporting portion on the elastic line tube is used to support the elastic line. When the elastic line is tightened, the force direction of the elastic line is nearly perpendicular to the axis of the gun head, which facilitates the elastic line to be separated from the gun head.

[0018] (3) The present invention provides a tightening slope at the end of the gun head. After the elastic line moves from the main body of the gun head to the tightening slope, it is easier to slide off the tightening slope.

[0019] (4) The present invention is provided with an anti-slip boss on the tightening inclined surface to prevent the elastic line from being detached from the tightening inclined surface before it is tightened and before it is initially placed in place. After the anti-slip boss is provided, the elastic line tightening device needs to apply a certain force to make the elastic line detach from the gun head.

[0020] (5) The present invention provides an elastic wire passing groove on one side of the gun head close to the first supporting portion, and the bottom surface of the elastic wire passing groove matches the bottom of the tightening inclined surface. When the elastic wire is initially put on the gun head, the elastic wire will not move too far away from the tightening inclined surface, which is convenient for subsequent operations.

[0021] (6) The length of the first support portion of the present invention extending along the axial direction of the gun head is greater than the length from the bottom of the tightening slope to the elastic wire tube, and less than the length from the end of the gun head to the elastic wire tube. During the tightening of the elastic wire, the elastic wire sleeved on the gun head is subjected to a partial force along the axial direction of the gun head, which facilitates the elastic wire to detach from the gun head.

[0022] (7) The negative pressure tube of the present invention is in an "L" shape as a whole. On the one hand, it makes it easier to aim the gun tip at the hemorrhoids on the inner wall of the anorectal cavity. On the other hand, compared with a linear negative pressure tube, the overall force direction of the elastic line is along the direction of the elastic line tube, and the stress distribution is more uniform.

[0023] (8) The elastic wire tube of the present invention is provided with a fuse device, and there is no need to provide a cutting device such as a blade, thereby simplifying the structure and reducing the difficulty of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein

[0025] Figure 1 It is a schematic diagram of the structure of the present invention.

[0026] Figure 2 For the present invention Figure 1 Enlarged view of part A in the middle.

[0027] Figure 3 It is a schematic diagram of the side structure of the gun head of the present invention.

[0028] Figure 4 It is a schematic structural diagram of the elastic line tightening device of the present invention.

[0029] The numbers in the accompanying drawings are: gun body 1, elastic line 2, negative pressure tube 3, negative pressure tube main body 3-1, gun head 3-2, tightening slope 3-2-1, anti-slip boss 3-2-2, elastic line wire groove 3-2-3, second support part 3-2-4, elastic line tube 4, first support part 4-1, elastic line tightening device 5, tightening drive device 5-1, tightening wheel 5-2. DETAILED DESCRIPTION

[0030] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the embodiments of the present invention, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is conventionally placed when used, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The present invention is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the scope of protection of the present invention.

[0036] (Example 1)

[0037] See Figure 1-4 The anorectal ligation device of this embodiment includes a gun body 1, a gun barrel and an elastic line 2. The gun body 1 is connected to the gun barrel. The gun barrel includes a negative pressure tube 3 and an elastic line tube 4 arranged in parallel. The negative pressure tube 3 is hollow inside. The negative pressure tube 3 is connected to an external negative pressure device through a negative pressure channel in the gun body 1. After the negative pressure device is started, the hemorrhoids are sucked into the end of the negative pressure tube 3. The gun barrel is a detachable structure. The elastic line tube 4 is semi-arc-shaped and fits on one side of the negative pressure tube 3. The gun body 1 is provided with an elastic line tightening device 5. The elastic line 2 is arranged in the elastic line tube 4 and one end is sleeved on the end of the negative pressure tube 3, and the other end is fixed to the elastic line tightening device 5; when the elastic line tightening device 5 tightens the elastic line 2, the elastic line 2 is detached from the end of the negative pressure tube 3.

[0038] For details, see Figure 4 The elastic line tightening device 5 includes a tightening drive device 5-1 and a tightening wheel 5-2. The tightening drive device 5-1 is in transmission connection with the tightening wheel 5-2. The other end of the elastic line 2 is wound around the tightening wheel 5-2. In this embodiment, the tightening drive device 5-1 adopts a small motor, which drives the tightening wheel 5-2 to rotate, thereby tightening the elastic line 2.

[0039] See Figure 2-3 The negative pressure tube 3 includes a negative pressure tube body 3-1 and a gun head 3-2, the negative pressure tube body 3-1 is connected to the gun head 3-2, one end of the elastic line 2 is sleeved on the gun head 3-2 in the form of a slipknot, and the elastic line tube 4 is provided with a first support portion 4-1 extending axially along the gun head 3-2, and the first support portion 4-1 supports the elastic line 2. The negative pressure tube 3 composed of the negative pressure tube body 3-1 and the gun head 3-2 can be a straight tube shape or an "L" shape. When the negative pressure tube 3 is in an "L" shape as a whole, the axis of the negative pressure tube body 3-1 forms an angle with the axis of the gun head 3-2. In this embodiment, the axis of the negative pressure tube body 3-1 is perpendicular to the axis of the gun head 3-2. When the negative pressure tube 3 is in the shape of a straight tube as a whole, one end of the elastic line 2 is sleeved on the gun head 3-2, and the other end is passed through the elastic line tube 4 after passing through the first support part 4-1, and finally fixed on the tightening wheel 5-2. At this time, the elastic line 2 is in an "L" shape as a whole. When the negative pressure tube 3 is in the shape of an "L", the elastic line 2 is arranged along the length direction of the elastic line tube 4 as a whole. On the one hand, it is easier to align the gun head 3-2 with the hemorrhoids on the inner wall of the anorectal cavity. On the other hand, compared with the straight negative pressure tube 3, the overall force direction of the elastic line 2 is along the direction of the elastic line tube 4, and the stress distribution is more uniform.

[0040] The end of the gun head 3-2 is provided with a tightening slope 3-2-1, and the tightening slope 3-2-1 is provided on the side of the gun head 3-2 away from the first support portion 4-1. The tightening slope 3-2-1 makes it easier for the elastic line 2 to slide down along the tightening slope 3-2-1 after it moves from the main part of the gun head 3-2 to the tightening slope 3-2-1. The tightening slope 3-2-1 is provided with an anti-slip boss 3-2-2 to prevent the elastic line 2 from being detached from the tightening slope 3-2-1 before it is tightened when it is not put in place at the beginning. After the anti-slip boss 3-2-2 is provided, the elastic line 2 tightening device needs to apply a certain force to make the elastic line 2 detach from the gun head 3-2.

[0041] An elastic wire groove 3-2-3 is provided on one side of the gun head 3-2 close to the first support portion 4-1, and the bottom surface of the elastic wire groove 3-2-3 matches the bottom of the tightening slope 3-2-1. When the elastic wire 2 is initially put on the gun head 3-2, the elastic wire 2 will not move too far away from the tightening slope 3-2-1, which is convenient for subsequent operations.

[0042] The length of the first support portion 4-1 extending axially along the gun head 3-2 is greater than the length from the bottom of the tightening slope 3-2-1 to the elastic line tube 4, and is less than the length from the end of the gun head 3-2 to the elastic line tube 4. During the tightening process of the elastic line 2, the elastic line 2 sleeved on the gun head 3-2 is subjected to a part of the force along the axial direction of the gun head 3-2, which facilitates the elastic line 2 to detach from the gun head 3-2.

[0043] A second supporting portion 3-2-4 is also provided on one side of the gun head 3-2 close to the first supporting portion 4-1. The second supporting portion 3-2-4 is used to support the first supporting portion 4-1, and the structure is more stable.

[0044] A fuse device (not shown in the figure) is arranged in the elastic wire tube 4, and a control device is arranged in the gun body 1. The control device is used to control the heating of the fuse device, so that the elastic wire 2 is disconnected.

[0045] The present invention changes the force direction of the elastic line 2 during the tightening process through the first support part 4-1, so that the elastic line 2 is separated from the gun head 3-2 when subjected to a certain tightening force, and there is no need to set up an inner tube and an outer tube, thereby solving the problem of discomfort to the patient when pushing the outer tube.

[0046] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anorectal ligation device, characterized in that: The invention comprises a gun body (1), a gun barrel and an elastic wire (2), wherein the gun body (1) is connected to the gun barrel, the gun barrel comprises a negative pressure tube (3), an elastic wire tightening device (5) is arranged on the gun body (1), one end of the elastic wire (2) is sleeved on the end of the negative pressure tube (3), and the other end is fixed to the elastic wire tightening device (5); When the elastic line tightening device (5) tightens the elastic line (2), the elastic line (2) detaches from the end of the negative pressure tube (3).

2. An anorectal ligation device according to claim 1, characterized in that: The gun barrel further comprises an elastic wire tube (4), wherein the elastic wire tube (4) is arranged on one side of the negative pressure tube (3), and the middle part of the elastic wire (2) is arranged in the elastic wire tube (4); and a fuse device is arranged in the elastic wire tube (4).

3. An anorectal ligation device according to claim 2, characterized in that: The negative pressure tube (3) comprises a negative pressure tube body (3-1) and a gun head (3-2); the negative pressure tube body (3-1) is connected to the gun head (3-2); one end of the elastic line (2) is sleeved on the gun head (3-2); the elastic line tube (4) is provided with a first support portion (4-1) extending axially along the gun head (3-2); the first support portion (4-1) supports the elastic line.

4. An anorectal ligation device according to claim 3, characterized in that: The negative pressure tube (3) is in an "L" shape as a whole, and the axis of the negative pressure tube body (3-1) forms an angle with the axis of the gun head (3-2).

5. The anorectal ligation device according to claim 3, characterized in that: The end of the gun head (3-2) is provided with a tightening inclined surface (3-2-1), and the tightening inclined surface (3-2-1) is arranged on a side of the gun head (3-2) away from the first supporting portion (4-1).

6. An anorectal ligation device according to claim 5, characterized in that: An anti-slip boss (3-2-2) is provided on the tightening inclined surface (3-2-1).

7. The anorectal ligation device according to claim 5, characterized in that: The length of the first support portion (4-1) extending axially along the gun head (3-2) is greater than the length from the bottom of the tightening slope (3-2-1) to the elastic line tube (4), and is less than the length from the end of the gun head (3-2) to the elastic line tube (4).

8. An anorectal ligation device according to claim 6, characterized in that: An elastic wire passing groove (3-2-3) is provided on one side of the gun head (3-2) close to the first supporting portion (4-1), and the bottom surface of the elastic wire passing groove (3-2-3) matches the bottom of the tightening inclined surface (3-2-1).

9. An anorectal ligation device according to claim 3, characterized in that: A second supporting portion (3-2-4) is also provided on one side of the gun head (3-2) close to the first supporting portion (4-1), and the second supporting portion (3-2-4) is suitable for supporting the first supporting portion (4-1).

10. The anorectal ligation device according to claim 1, characterized in that: The elastic line tightening device (5) comprises a tightening drive device (5-1) and a tightening wheel (5-2); the tightening drive device (5-1) is transmission-connected to the tightening wheel (5-2); and the other end of the elastic line (2) is wound around the tightening wheel (5-2).

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