Disposable haemorrhoids loop ligature anastomat cutting knife

Abstract

The utility model provides a disposable haemorrhoids loop ligature anastomat cutting knife, and belongs to the technical field of haemorrhoids loop ligature instruments. The cutting knife of the disposable haemorrhoids loop ligature anastomat comprises a gun barrel and a loop ligature tube, an elastic rope is arranged in the loop ligature tube, the outer circle of the front end of the gun barrel is sleeved with the elastic rope, the outer circle of the loop ligature tube is rotationally connected with an outer tube, a notch is formed in the front end of the loop ligature tube, and the cutting knife and a blocking block are arranged on the two sides of the front end of the outer tube respectively. And the blocking block and the cutting knife alternately enter the notch. In the application, the plug block is filled in the gap to form the complete front end of the loop ligature tube to tighten the elastic rope, the outer tube is rotated after tightening to move the cutting knife to the position of the gap instead of the plug block, so that the elastic rope can be in contact with the cutting edge of the cutting knife, the elastic rope is cut off by twisting the loop ligature tube, the use of scissors is avoided, and the labor intensity of workers is reduced. And the residual rope head is very short, so that the loop ligature effect is ensured.

Description

Technical Field

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

[0002] An internal hemorrhoid ligation device is a medical device used to treat internal hemorrhoids, mixed hemorrhoids, lower sigmoid colon and rectal polyps. Existing hemorrhoid ligation staplers have elastic wires inside. However, the hemorrhoid ligation staplers in the prior art need to be manually cut during use. During the cutting process, the cutter may touch the wound, thus causing danger.

[0003] In this regard, China's patent application number is CN202121295745.7, which discloses an automatic hemorrhoidal ligation stapler. This solution mainly rotates the rotating block so that the rotating block can drive the rotating plate to rotate, and the rotation of the rotating plate can drive the scraper to rotate. The rotation of the scraper can cut the wire inside the cutting mechanism. When the cutting is completed, the elastic rope fixed at the top of the fixed body will rebound the scraper and the rotating block to their original position, which is convenient for the use of the device. The hemorrhoidal ligation stapler can automatically cut the wire during use, avoiding the possibility that the cutter may touch the wound during the cutting process, thereby causing danger.

[0004] However, in the process of implementing the technical solution in the embodiments of the present application, the inventor of the present application found that the above technology has at least the following technical problems:

[0005] The ligature rope is tied to the inside of the anus, and the cutting point should be close to the knot. However, the above scheme requires turning the rotating block by hand, so it is impossible to get close to the knot, resulting in the remaining rope end of the elastic rope being too long or even leaking out of the anus, affecting the ligature effect. Utility Model Content

[0006] In order to make up for the above shortcomings, the present application provides a disposable hemorrhoid ligation stapler cutting knife, aiming to improve the problems mentioned in the above background technology.

[0007] An embodiment of the present application provides a disposable hemorrhoid ligation stapler cutting knife, comprising a gun barrel and a ligation tube, wherein an elastic rope is arranged inside the ligation tube, wherein the elastic rope is sleeved on the outer circle of the front end of the gun barrel, wherein the outer circle of the ligation tube is rotatably connected to an outer tube, wherein a notch is arranged at the front end of the ligation tube, and a cutting knife and a blocking block are respectively arranged on both sides of the front end of the outer tube, wherein the blocking block and the cutting knife alternately enter the notch.

[0008] In a specific implementation manner, a knife seat and the blocking block are respectively provided on both sides of the front end of the outer tube, and the cutting knife is provided on the knife seat.

[0009] In a specific embodiment, the knife seat is fitted on the outer circle of the ligation tube, and the knife seat is flush with the front end of the ligation tube.

[0010] In the above implementation process, the blocking block is located opposite to the knife holder, and the knife holder is used to match the blocking block to maintain a relatively rounded shape to avoid scratching the inner wall of the anus.

[0011] In a specific embodiment, the block is elastically connected to the outer tube.

[0012] In a specific embodiment, the blocking block is movably embedded in the notch, and the front end of the blocking block is flush with the front end of the ligation tube.

[0013] In the above implementation process, the blocking block is embedded in the notch and forms a whole with the ligation tube, which is convenient for tightening the knot. When it needs to be cut, the ligation tube and the outer tube rotate relative to each other, so that the cutting knife moves to the notch position to cut the elastic rope, and the blocking block presses against the outer circle of the ligation tube. The engagement of the blocking block and the notch has a buckling effect and plays a positioning role.

[0014] In a specific embodiment, both the ligation tube and the outer tube are axially scored.

[0015] In the above implementation process, when the blocking block is engaged with the notch, there is an obvious damping rod, which plays a positioning role. When the outer tube rotates, the blocking block moves out of the notch until the two notches on the ligation tube and the outer tube are aligned, indicating that the cutting knife has moved to the notch position. At this time, the elastic rope can be cut from the front end by twisting the ligation tube and using the cutting knife.

[0016] In a specific embodiment, the cutting knife includes a blade and a knife body, the blade faces the axial direction, and the knife body fits on the outer circle of the knife seat.

[0017] In a specific embodiment, the cutting knife further includes a clamp, and the clamp is wrapped around the outer circle of the outer tube.

[0018] In the above implementation process, the cutting knife is integrally formed, the front end of the knife body is bent inward 90 degrees to form a blade, and both sides of the middle of the knife body are bent inward and wrapped around the outer circle to form a clamp, thereby fixing the cutting knife on the outer tube.

[0019] Compared with the prior art, the beneficial effects of the present application are: a block is used to fill the gap to form a complete front end of the ligation tube to tighten the elastic rope. After tightening, the outer tube is rotated to move the cutting knife to the position of the gap instead of the block, so that the elastic rope can contact the cutting edge of the cutting knife. The elastic rope is cut by twisting the ligation tube, avoiding the use of scissors and making the remaining rope end very short, thereby ensuring the ligation effect. 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 cutting knife of a disposable hemorrhoid ligation stapler provided in an embodiment of the present application;

[0022] Figure 2 A schematic diagram of the state of the blocking block provided in the embodiment of the present application in the notch of the ligation tube;

[0023] Figure 3 A schematic diagram of the state of the cutting knife provided in the embodiment of the present application in the notch of the ligation tube;

[0024] Figure 4 A schematic diagram of the cutting knife structure provided in an embodiment of the present application.

[0025] In the figure: 10-gun barrel; 20-latch tube; 30-elastic rope; 40-outer tube; 50-cutting knife; 51-blade; 52-knife body; 53-hoop; 60-block; 70-knife holder; 80-notch. 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 cutting knife, including a barrel 10 and a ligation tube 20, wherein an elastic cord 30 is arranged inside the ligation tube 20, and the elastic cord 30 is sleeved on the outer circle of the front end of the barrel 10, and the outer circle of the ligation tube 20 is rotatably connected to an outer tube 40, and a notch is arranged at the front end of the ligation tube 20, and a cutting knife 50 and a blocking block 60 are arranged on both sides of the front end of the outer tube 40, respectively, and the blocking block 60 and the cutting knife 50 alternately enter the notch. Among them, the blocking block 60 is used to fill the notch to form a complete front end of the ligation tube 20 to play the role of tightening the elastic cord 30, and after tightening, the outer tube 40 is rotated to move the cutting knife 50 to the position of the notch instead of the blocking block 60, so that the elastic cord 30 can contact the cutting edge of the cutting knife 50, and the elastic cord 30 is cut by twisting the ligation tube 20, thereby avoiding the use of scissors and making the remaining rope head very short, thereby ensuring the ligation effect.

[0028] See also Figure 1-Figure 4A knife holder 70 and a blocking block 60 are respectively arranged on both sides of the front end of the outer tube 40, and a cutting knife 50 is arranged on the knife holder 70. The knife holder 70 fits the outer circle of the ligation tube 20, and the knife holder 70 is flush with the front end of the ligation tube 20. The blocking block 60 is located opposite to the knife holder 70, and the knife holder 70 is used to match the blocking block 60 to maintain a relatively rounded shape to avoid scratching the inner wall of the anus.

[0029] See also Figure 1-Figure 4 The block 60 is elastically connected to the outer tube 40. The block 60 is movably embedded in the notch, and the front end of the block 60 is flush with the front end of the ligation tube 20. After the block 60 is embedded in the notch, it forms a whole with the ligation tube 20, which is convenient for tightening the knot. When it needs to be cut, the ligation tube 20 and the outer tube 40 rotate relative to each other, so that the cutting knife 50 moves to the notch position to cut the elastic rope 30, and the block 60 abuts against the outer circle of the ligation tube 20. The engagement of the block 60 with the notch plays a buckling effect and plays a positioning role.

[0030] See also Figure 1-Figure 4 , notches 80 are axially arranged on both the ligation tube 20 and the outer tube 40. When the block 60 is engaged with the notch, there is an obvious damping rod, which plays a positioning role. When the outer tube 40 rotates, the block 60 moves out of the notch until the two notches 80 on the ligation tube 20 and the outer tube 40 are aligned, indicating that the cutting knife 50 has moved to the notch position. At this time, the elastic rope 30 can be cut from the front end by twisting the ligation tube 20 and using the cutting knife 50.

[0031] See also Figure 1-Figure 4 The cutting knife 50 includes a blade 51 and a blade body 52, the blade 51 faces the axis direction, and the blade body 52 fits the outer circle of the knife seat 70. The cutting knife 50 also includes a clamp 53, and the clamp 53 is wrapped around the outer circle of the outer tube 40. The cutting knife 50 is integrally formed, the front end of the blade body 52 is bent inward by 90 degrees to form the blade 51, and the two sides of the middle part of the blade body 52 are bent inward and wrapped around the outer circle of the appearance to form the clamp 53, so as to fix the cutting knife 50 on the outer tube 40.

[0032] The working principle of the cutting knife of the disposable hemorrhoid ligation stapler is as follows: during ligation, the cutting edge of the cutting knife 50 is located at the outer circle of the ligation tube 20, which will not affect the patient or other structures. The ligation tube 20 is used to push the front end of the elastic rope 30 onto the hemorrhoids in the anus, and then the elastic rope 30 at the rear end of the ligation tube 20 is tightened, and the knot at the front end of the elastic rope 30 is pressed against the front end of the ligation tube 20, and the front end of the elastic rope 30 is tightened. After that, the outer tube 40 is rotated to twist the block 60 to form a gap, and then the cutting knife 50 is twisted to the gap position. At this time, the twist The ligation tube 20 and the outer tube 40 are moved so that the elastic rope 30 fits against the position of the cutting knife 50 and rubs until it is cut off. In summary, the blocking block 60 is used to fill the gap to form a complete front end of the ligation tube 20, which plays the role of tightening the elastic rope 30. After tightening, the outer tube 40 is rotated to move the cutting knife 50 to the position of the gap instead of the blocking block 60, so that the elastic rope 30 can contact the blade of the cutting knife 50, and the elastic rope 30 is cut by twisting the ligation tube 20, which avoids the use of scissors and makes the remaining rope head very short, thereby ensuring the ligation effect.

[0033] 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 cutting knife, comprising a barrel (10) and a ligation tube (20), wherein an elastic cord (30) is arranged inside the ligation tube (20), and the elastic cord (30) is sleeved on the outer circle of the front end of the barrel (10), characterized in that: The outer circumference of the ligation tube (20) is rotatably connected to the outer tube (40), a notch is arranged at the front end of the ligation tube (20), a cutting knife (50) and a blocking block (60) are respectively arranged on both sides of the front end of the outer tube (40), and the blocking block (60) and the cutting knife (50) are alternately entered into the notch.

2. The disposable hemorrhoid ligation stapler cutting knife according to claim 1, characterized in that: A tile-shaped knife seat (70) and the blocking block (60) are respectively arranged on both sides of the front end of the outer tube (40), and the cutting knife (50) is arranged on the knife seat (70).

3. The disposable hemorrhoid ligation stapler cutting knife according to claim 2, characterized in that: The knife seat (70) is fitted on the outer circle of the ligation tube (20), and the knife seat (70) is flush with the front end of the ligation tube (20).

4. The disposable hemorrhoid ligation stapler cutting knife according to claim 3, characterized in that: The blocking block (60) is elastically connected to the outer tube (40).

5. The disposable hemorrhoid ligation stapler cutting knife according to claim 4, characterized in that: The blocking block (60) is movably embedded in the notch, and the front end of the blocking block (60) is flush with the front end of the ligation tube (20).

6. The disposable hemorrhoid ligation stapler cutting knife according to claim 5, characterized in that: The ligation tube (20) and the outer tube (40) are both axially provided with notches (80).

7. The disposable hemorrhoid ligation stapler cutting knife according to claim 6, characterized in that: The cutting knife (50) comprises a blade (51) and a knife body (52); the blade (51) faces the axial direction, and the knife body (52) fits on the outer circle of the knife seat (70).

8. The disposable hemorrhoid ligation stapler cutting knife according to claim 7, characterized in that: The cutting knife (50) further comprises a hoop (53), wherein the hoop (53) is wrapped around the outer circumference of the outer tube (40).

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