Novel anal fistula snare

Abstract

The utility model discloses a novel anal fistula snare, and belongs to the technical field of medical instruments. Comprising a handle, a fixing rod is fixedly arranged on the front side of the handle, a loop ligature sliding rod is slidably arranged at the upper end of the fixing rod, a sliding rod pushing handle used for pushing the loop ligature sliding rod to move is arranged on the handle, a clamping arc is arranged at the front end of the fixing rod, the loop ligature sliding rod penetrates through the clamping arc and is in sliding fit with the clamping arc, a loop ligature hole is formed in the front end of the loop ligature sliding rod, and a binding rope is arranged in the loop ligature hole. The front end of the loop ligature sliding rod is sleeved with a loop ligature ring, a wiring plate is arranged on the lower side of the front end of the fixing rod, a loop ligature pull rope is arranged in the wiring plate, a line cutting assembly is movably arranged on the lower side of the fixing rod, and a winding wheel used for tensioning the loop ligature pull rope is rotationally arranged on the lower side of the handle. According to the anal fistula snare, the internal structure and the use mode of a loop ligature device are optimized, the operation is convenient and rapid, the loop ligature device is suitable for loop ligature treatment and thread hanging treatment of internal hemorrhoids of different degrees, the internal structure is simple, the processing cost is low, the medical cost is reduced, and the clinical operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a novel anal fistula snare. Background Art

[0002] At present, hemorrhoids are a common and frequently occurring disease in human beings. There is a saying in China that "nine out of ten people have hemorrhoids". Band ligation is one of the common methods for treating hemorrhoids. Its principle of shedding is to tie the base of the hemorrhoids, block the blood supply to the hemorrhoidal tissue, and cause it to shrink and shedding due to ischemia.

[0003] In order to better achieve the ligation of hemorrhoids, the applicant has previously developed a ligation device and applied for a Chinese utility model patent with application number: CN201720652696.5 and patent name: A hemorrhoid ligation device. By adopting the ligation regulating valve handle assembly operation, the operation is simple and convenient, and it is easy to control the ligation of hemorrhoids.

[0004] In addition, anal fistula and perianal abscess are the second most common anorectal diseases. "Thread hanging therapy" is a common method for treating high-position anal fistula and high-position perianal abscess. It blocks blood flow and slowly cuts tissue, giving local tissue enough time for fibrosis and fixation, thus protecting the anal sphincter function. Its working principle is similar to that of hemorrhoid ligation.

[0005] Traditional thread hanging therapy generally uses rubber bands for thread hanging. This thread hanging method has the following disadvantages: 1. The ligation process requires the cooperation of two people to complete, which is cumbersome and inefficient; 2. The silk thread of the ligation rubber band is easy to slip off during the operation, which requires the tacit cooperation of two people to complete it smoothly; 3. The tightness is difficult to control and cannot be quantified; 4. When the thread needs to be tightened again in the later stage, local anesthesia is required to repeat the above process. It brings great pain and psychological fear to patients.

[0006] However, with the continuous development and improvement of the ligation device, we have designed and developed a new type of anal fistula snare, which has the functions of hemorrhoid ligation, anal fistula hanging line, and perianal abscess hanging line. Its design is more scientific and reasonable, the optimized internal structure is simpler, the operation is convenient, and the product processing cost is reduced, which optimizes the clinical use effect and application range of the ligation device. Utility Model Content

[0007] The purpose of the utility model is to provide a novel anal fistula snare to solve the problems raised in the above background technology.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A novel anal fistula snare comprises a handle, a fixed rod is fixedly arranged on the front side of the handle, a ligation slide rod is slidably arranged on the upper end of the fixed rod, a slide rod push handle for pushing the ligation slide rod to move is arranged on the handle, a clamping arc is arranged at the front end of the fixed rod, the ligation slide rod passes through the clamping arc and slidably cooperates with the clamping arc, a ligation hole is opened at the front end of the ligation slide rod, a binding rope is arranged in the ligation hole, a ligation coil is sleeved at the front end of the ligation slide rod, a wiring board for wiring is arranged at the lower side of the front end of the fixed rod, a wiring rope for tightening the wiring coil is arranged in the wiring board, a cutting assembly for cutting the wiring rope in the wiring board is movably arranged at the lower side of the fixed rod, and a winding wheel for tightening the wiring rope is rotatably arranged at the lower side of the handle.

[0010] As a further preferred solution of the utility model: a wire clamping column is fixedly arranged on the rear side of the upper end of the tying slide rod, and a wire clamping groove for clamping the tail of the binding rope is opened on the wire clamping column.

[0011] As a further preferred solution of the utility model: staggered wire holes and ejector holes are respectively provided on the front and rear sides of the wiring board, and a wire cutting groove communicating with the wire holes and ejector holes is provided on the wiring board, and the wire tying rope passes through the wire hole, the wire cutting groove and the ejector hole.

[0012] As a further preferred scheme of the utility model: the wire cutting assembly includes a thimble located at the rear side of the thimble hole, a thimble push plate is slidably arranged in the handle, the front side of the thimble push plate passes through the handle and is fixedly connected to the thimble, a tooth plate is fixedly connected to the rear side of the thimble push plate, and a push plate control wheel engaged with the tooth plate is rotatably arranged on the rear part of the upper side of the handle, the front side of the thimble can be inserted into the thimble hole and slidably cooperate with the thimble hole, and a wiring groove for guiding the wire tie rope into the handle is provided at the lower end of the front side of the thimble push plate.

[0013] As a further preferred solution of the utility model: a wire wheel located at the rear side of the wiring groove is rotatably arranged in the handle.

[0014] As a further preferred solution of the utility model: the slide rod push handle is slidably arranged on the front side of the upper end of the handle, and the tail of the tying slide rod passes through the front side of the handle and is fixedly connected to the lower end of the slide rod push handle.

[0015] As a further preferred solution of the utility model: a scale is provided on the upper surface of the tying slide rod.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The anal fistula snare further optimizes the internal structure and usage of the ligature device. After the ligature is looped around the hemorrhoid tissue or the probe guides the ligature to pass through the tissue where the wire is needed, the tail end is tightened to the required tightness, passed through the ligature hole and clamped into the wire clamping groove, then the ligature slide bar is pulled backward through the slide bar push handle, the clamping arc pushes out the ligature loop at the head of the ligature slide bar, the ligature loop is looped onto the ligature, then the winding wheel is rotated, the ligature loop is tightened through the wire pull rope, and then the ligature is tightened, then the push plate control wheel is rotated to make the ejector pin enter the ejector pin hole, and the ligature pull rope is cut off. The operation is convenient and quick, and can be applied to different degrees of internal hemorrhoid ligation treatment and wire hanging treatment. The internal structure is simple, the processing cost is low, the medical cost is reduced, and the clinical operation efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the novel anal fistula snare of the utility model;

[0019] Figure 2 The internal structure of the new anal fistula snare of the utility model is shown in FIG. Figure 1 ;

[0020] Figure 3 The internal structure of the new anal fistula snare of the utility model is shown in FIG. Figure 2 ;

[0021] Figure 4 This is a schematic diagram of the binding rope routing of the novel anal fistula snare of the utility model;

[0022] Figure 5 The utility model is a schematic diagram of the wiring of the tie wire and pull rope of the novel anal fistula snare.

[0023] In the figure: 1. handle; 2. fixing rod; 3. sleeve tying slide rod; 4. sleeve tying hole; 5. wire clamping column; 6. wire clamping groove; 7. slide rod push handle; 8. push plate control wheel; 9. arc clamp; 10. ejector push plate; 11. wire routing groove; 12. winding wheel; 13. ejector; 14. wire guide wheel; 15. tooth plate; 16. wire hole; 17. ejector hole; 18. wire cutting groove; 19. wire routing plate; 20. binding rope; 21. binding coil; 22. wire binding pull rope. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0025] See also Figure 1-5 The present embodiment provides a novel anal fistula snare, comprising a handle 1, a fixed rod 2 is fixedly arranged on the front side of the handle 1, a ligation slide rod 3 is slidably arranged on the upper end of the fixed rod 2, a scale is arranged on the upper surface of the ligation slide rod 3, and a slide rod push handle 7 for pushing the ligation slide rod 3 to move is arranged on the handle 1, as shown in FIG. Figure 1 as well as Figure 2 As shown, the installation of the slide rod push handle 7 is a conventional setting familiar to those skilled in the art. The slide rod push handle 7 is slidably arranged on the front side of the upper end of the handle 1, and the tail of the tying slide rod 3 passes through the front side of the handle 1 and is fixedly connected to the lower end of the slide rod push handle 7. By pushing the slide rod push handle 7 forward and backward, the forward and backward movement of the tying slide rod 3 on the fixed rod 2 can be controlled.

[0026] A clamping arc 9 is arranged at the front end of the fixing rod 2, and the ligating slide rod 3 passes through the clamping arc 9 and slides with the clamping arc 9. A ligating hole 4 is opened at the front end of the ligating slide rod 3, and a binding rope 20 is arranged in the ligating hole 4. The function of the binding rope 20 is to tie up hemorrhoids or muscle tissue, such as Figure 1 , Figure 4 As shown, in order to better fix the binding rope 20 , a wire clamping column 5 is fixedly provided on the rear side of the upper end of the tying slide rod 3 , and a wire clamping groove 6 for clamping the tail of the binding rope 20 is opened on the wire clamping column 5 .

[0027] At the same time, if Figure 2 as well as Figure 5 As shown, a tying coil 21 is sleeved on the front end of the tying slide rod 3, a wiring board 19 for wiring is arranged at the lower side of the front end of the fixed rod 2, a tying rope 22 for tightening the tying coil 21 is arranged in the wiring board 19, the tying rope 22 and the tying coil 21 are integrated, and a cutting component for cutting the tying rope 22 in the wiring board 19 is movably arranged at the lower side of the fixed rod 2. Specifically, as shown in FIG. Figure 2 as well as Figure 3 As shown, offset wire holes 16 and ejector holes 17 are respectively provided on the front and rear sides of the wiring plate 19, and a wire cutting groove 18 communicating with the wire holes 16 and the ejector holes 17 is provided on the wiring plate 19. The offset design of the wire holes 16 and the ejector holes 17 facilitates the tilting of the wire tie rope 22 in the wire cutting groove 18, making it easier to cut the wire tie rope 22 in the wire cutting groove 18. The wire cutting assembly includes a pin 13 located at the rear side of the pin hole 17, a pin push plate 10 is slidably arranged in the handle 1, the front side of the pin push plate 10 passes through the handle 1 and is fixedly connected to the pin 13, a toothed plate 15 is fixedly connected to the rear side of the pin push plate 10, and a push plate control wheel 8 meshing with the toothed plate 15 is rotatably arranged on the rear part of the upper side of the handle 1. As a conventional setting familiar to those skilled in the art, the push plate control wheel 8 adopts a gear structure to achieve meshing with the toothed plate 15, and the front side of the pin 13 can be inserted into the pin hole 17 and slidably cooperate with the pin hole 17. A wiring groove 11 for guiding the wire tie rope 22 into the handle 1 is provided at the lower end of the front side of the pin push plate 10.

[0028] A winding wheel 12 for tightening the wire tie rope 22 is rotatably provided at the lower side of the handle 1 . In order to better guide the wire tie rope 22 , a guide wheel 14 located at the rear side of the wiring groove 11 is also rotatably provided in the handle 1 .

[0029] Specific, combined Figure 1-5 In order to enable those skilled in the art to better understand the present application, the working principle of the anal fistula snare will be described below:

[0030] Before use, the snare is in the following state: Figure 1 As shown, at this time, the binding rope 20 is separated from the snare, the tying loop 21 is sleeved on the front end of the tying slide rod 3, and the tying rope 22 at the tail of the tying loop 21 passes through the wire hole 16, the wire cutting groove 18, the thimble hole 17 and the wire routing groove 11 in sequence and then enters the handle 1, and passes around the wire wheel 14 and is wound around the winding wheel 12.

[0031] In actual application, as a conventional setting familiar to those skilled in the art, guide needles are connected to both ends of the binding rope 20, the middle section of the binding rope 20 is an elastic line, the guide probe can be shaped, the surface of the middle section of the elastic line is provided with scales, and the wire tie rope 22 is also an elastic line. After the binding rope 20 is passed around the hemorrhoidal tissue or muscle tissue, the two ends pass through the guide needles through the ligation hole 4, and after the binding rope 20 is tightened, it is clamped on the wire clamping column 5 through the wire clamping groove 6. At this time, the slide rod push handle 7 is pushed backward to move the ligation slide rod 3 backward, and the clamping arc 9 pushes the ligation loop 21 at the front end of the ligation slide rod 3 away from the ligation slide rod 3, and the ligation loop 21 is sleeved on the binding rope 20. Then, the winding wheel 12 is turned to pull the ligation loop 22 to tighten the ligation loop 21 so that the ligation loop 2 The binding rope 20 is tied tightly to make the hemorrhoid tissue or muscle tissue ischemic in the later stage and achieve the purpose of separation. Then, the push plate control wheel 8 is rolled to push the ejector pin 13 forward, and the ejector pin 13 is inserted into the ejector pin hole 17. Since the wire tie rope 22 is in a tensioned state in the ejector pin hole 17 and the wire cutting groove 18, the ejector pin 13 will cut the wire tie rope 22 in the ejector pin hole 17 or the wire cutting groove 18, and then the excess binding rope 20 above the tying slide bar 3 can be cut off by scissors.

[0032] It should be noted that the above embodiments are only specific and clear descriptions of the technical solutions and technical features of the present application. For those skilled in the art, solutions or features that belong to the prior art or common knowledge are not described in detail in the above embodiments.

[0033] In addition, the technical solutions of the present application are not limited to the above-mentioned embodiments. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A novel anal fistula snare, comprising a handle (1), a fixing rod (2) fixedly arranged on the front side of the handle (1), a ligation slide rod (3) slidably arranged on the upper end of the fixing rod (2), characterized in that: The handle (1) is provided with a slide handle (7) for pushing the tying slide bar (3) to move, the front end of the fixed rod (2) is provided with a clamping arc (9), the tying slide bar (3) penetrates the clamping arc (9) and slides with the clamping arc (9), the front end of the tying slide bar (3) is provided with a tying hole (4), a binding rope (20) is provided in the tying hole (4), the front end of the tying slide bar (3) is sleeved with a tying coil (21), the lower side of the front end of the fixed rod (2) is provided with a wiring board (19) for wiring, the wiring board (19) is provided with a tying rope (22) for tightening the tying coil (21), the lower side of the fixed rod (2) is movably provided with a cutting assembly for cutting the tying rope (22) in the wiring board (19), and the lower side of the handle (1) is rotatably provided with a winding wheel (12) for tightening the tying rope (22).

2. The novel anal fistula snare according to claim 1, characterized in that: A wire clamping column (5) is fixedly arranged on the rear side of the upper end of the tying slide bar (3), and a wire clamping groove (6) for clamping the tail of the binding rope (20) is provided on the wire clamping column (5).

3. The novel anal fistula snare according to claim 1, characterized in that: The wiring board (19) is provided with offset wire holes (16) and ejector holes (17) on the front and rear sides respectively, and the wiring board (19) is provided with a wire cutting groove (18) which is in communication with the wire holes (16) and the ejector holes (17), and the wire tie rope (22) passes through the wire holes (16), the wire cutting groove (18) and the ejector holes (17).

4. The novel anal fistula snare according to claim 3, characterized in that: The wire cutting assembly comprises a pin (13) located at the rear side of the pin hole (17); a pin push plate (10) is slidably arranged in the handle (1); the front side of the pin push plate (10) passes through the handle (1) and is fixedly connected to the pin (13); the rear side of the pin push plate (10) is fixedly connected to a tooth plate (15); a push plate control wheel (8) meshing with the tooth plate (15) is rotatably arranged at the rear part of the upper side of the handle (1); the front side of the pin (13) can be inserted into the pin hole (17) and slidably cooperates with the pin hole (17); and a wiring groove (11) for guiding a wire tie rope (22) into the handle (1) is provided at the lower end of the front side of the pin push plate (10).

5. The novel anal fistula snare according to claim 4, characterized in that: A wire guide wheel (14) is rotatably disposed in the handle (1) and is located at the rear side of the wire routing groove (11).

6. The novel anal fistula snare according to claim 1, characterized in that: The slide rod push handle (7) is slidably arranged on the front side of the upper end of the handle (1), and the tail of the tying slide rod (3) passes through the front side of the handle (1) and is fixedly connected to the lower end of the slide rod push handle (7).

7. The novel anal fistula snare according to claim 1, characterized in that: The upper surface of the tying slide bar (3) is provided with scales.

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