Anal fistula hanging needle with retractable grasping forceps

Abstract

The present invention provides an anal fistula hanging needle with a retractable grasping forceps, belonging to the field of anal fistula hanging thread technology. It comprises a handle body, a joint body is provided on the top of the handle body, an inner thread is installed on the side of the joint body away from the handle body, an inner core is provided in the inner thread, and a clamping forceps is installed on the end of the inner core away from the handle body. By providing an inner thread, an outer sheath body and a limiting extrusion mechanism, the present invention can not only make the device fold together when not in use through the coordinated use of the inner thread and the outer sheath body, which is convenient for storage, but also prevent the folded clamping forceps from accidentally hitting other objects, and at the same time, the inner thread and the outer sheath body have a certain deformation ability, so that when entering the fistula tract, they can change according to the shape of the fistula tract, thereby better moving in the fistula tract. After passing through the fistula tract, the rubber band is grasped by the clamping forceps, and then the inner thread and the outer sheath body are pulled to drive the rubber band out of the fistula tract together.

Description

Technical Field

[0001] The invention relates to the technical field of anal fistula hanging thread, in particular to an anal fistula hanging thread needle with a telescopic grasping forceps. Background Art

[0002] Anal fistula hanging is a traditional Chinese medicine treatment primarily used to treat anal fistulas. Specifically, anal fistula hanging involves threading a rubber band or silk thread through the inner and outer openings of the fistula. The retraction force of the rubber band blocks blood circulation on the ligated side, while the mechanical pressure and contraction of the rubber band are used to slowly and bluntly dissect the fistula tract. This method works by causing the ligated tissue to gradually necrotize due to ischemia, ultimately separating it. The hanging thread also serves as a drain for the fistula, allowing inflammatory secretions to be discharged smoothly, maintaining unobstructed drainage, and preventing infection.

[0003] The traditional anal fistula hanging needle surgical instrument is a probe. After confirming the fistula tract, the probe needs to be passed through the fistula tract, and then the rubber band is passed through the fistula tract through the probe. Since the surface of the rubber band is smooth and the rubber band has a certain elasticity, the rubber band is easy to slip off during the process of passing through the fistula tract, making it difficult for most existing related probes to perform this operation, and also greatly reducing the work efficiency of the operation. Therefore, the present application provides an anal fistula hanging needle with a retractable grasping forceps to meet the needs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an anal fistula hanging needle with a retractable grasping forceps. By setting an inner thread, an outer sheath body and a limiting extrusion mechanism, not only can the inner thread and the outer sheath body be used in conjunction so that the device can be folded together when not in use for easy storage, but the folded clamps will not accidentally touch other objects. At the same time, the inner thread and the outer sheath body have a certain deformation ability. The above settings can solve the problem that most existing probe hanging operations are difficult and affect work efficiency.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] An anal fistula hanging needle with a retractable grasping forceps comprises a handle body, a joint body is provided on the top of the handle body, an inner thread is installed on the side of the joint body away from the handle body, an inner core is provided in the inner thread, a clamping forceps is installed on the end of the inner core away from the handle body, an outer wall of the inner thread is sleeved with an outer sheath body, a reinforcing block is fixedly connected to the side of the inner thread close to the joint body, a threaded block is fixedly connected to the side of the reinforcing block close to the joint body, a threaded sleeve block is sleeved on the outer sheath body, a connecting block is installed on the outer wall of the threaded sleeve block, a cotton piece body is installed on the outer sheath body; a limiting extrusion mechanism, the limiting extrusion mechanism is used for limiting the cotton piece body and squeezing and cleaning the rubber band during surgery, and the limiting extrusion mechanism is installed on the connecting block.

[0007] Optionally, segmented grooves are equidistantly formed on a side of the outer sheath body away from the handle body, and the inner wire and the outer sheath body are made of stainless steel.

[0008] Optionally, an end block is fixedly connected to one side of the outer sheath body close to the handle body, a limit block is installed on the outer wall of one side of the end block close to the handle body, and a limit groove is provided on the inner thread that is adapted to the shape of the limit block.

[0009] Optionally, a slider is fixedly connected to one side of the limit block close to the end block, and a sliding groove that matches the shape of the slider is provided on one side of the end block close to the limit block.

[0010] Optionally, the slider is made of plastic material, is wide in the middle and narrow at both sides, and has a buffer cavity on both sides of the slider.

[0011] Optionally, the position-limiting extrusion mechanism includes a first skeleton mounted on the connecting block, connecting skeletons are equidistantly mounted on the inner wall of the first skeleton, and a second skeleton is fixedly connected to a side of the connecting skeleton away from the first skeleton.

[0012] Optionally, the first frame is made of plastic material, first lightweight grooves are equidistantly arranged in a ring shape on the first frame, and a reinforcement strip is fixedly connected to an edge of a side of the first frame away from the handle body.

[0013] Optionally, second lightweight grooves are equidistantly provided in an annular manner on the second skeleton, a recess is provided in the middle of the second skeleton, a first weakened portion is provided in the middle of the second skeleton, and the second skeleton is made of plastic material.

[0014] Optionally, the connecting frame is an arc-shaped structure with a middle portion protruding toward the handle body, the connecting frame is made of plastic material, and a second weakened portion is provided in the middle portion of the connecting frame.

[0015] Optionally, a limiting groove is provided on an inner wall of one side of the threaded sleeve close to the handle body, and a limiting protrusion having a shape matching that of the limiting groove is fixedly connected to an outer wall of one side of the end block close to the clamping pliers.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above scheme, by providing the inner thread, the outer sheath body and the limiting and squeezing mechanism, not only can the device be folded together when not in use for easy storage by the coordinated use of the inner thread and the outer sheath body, but the inner thread and the outer sheath body have a certain deformation ability, so that they can change according to the shape of the fistula when entering the fistula, and the outer wall of the rubber band is squeezed and scraped by the limiting and squeezing mechanism, while the rubber band is continued to be pulled out. During the process, most of the liquid adhering to the outer wall of the rubber band can be effectively cleaned, so as to keep the end section of the rubber band as clean as possible, thereby facilitating the subsequent knotting operation of the rubber band, preventing the adhesive liquid from making the rubber band knotting difficult or causing the problem of slipping knots, and the structure is simple, which is convenient for quickly removing the rubber band from the anal fistula. The coordinated use between the structures effectively makes the use effect of the device better, and the structure of the device is simple, which is convenient for medical staff to operate and use.

[0018] By providing a second skeleton and a second weakened portion in the position-limiting extrusion mechanism, the second skeleton can be used in conjunction with the threaded sleeve, the connecting block and the threaded block body so that the outer sheath body can be stably fixed on the outer wall of the inner wire when not in use. The edge of the first skeleton and the second skeleton are connected together by the setting of the connecting skeleton, so that when the first skeleton is pressed, the pressure can be transmitted to the second skeleton through the connecting skeleton, thereby causing the second skeleton to deform. The second weakened portion is opened to make the part of the connecting skeleton close to the second weakened portion more likely to deform, and the second lightweight groove can be opened to make the deformation ability of the second skeleton better, and reduce the production cost of the second skeleton. The recess is set to make the part of the second skeleton close to the recess more likely to bend and deform first, and the first weakened portion is opened to further make the second skeleton close to the recess more likely to deform, so that the second skeleton has a better extrusion effect on the rubber band, so that when the rubber band is taken out of the anal fistula, there will not be a lot of liquid left on the outer wall, which makes it difficult to tie a knot. The coordinated use of the structures effectively makes the use effect of the position-limiting extrusion mechanism better, and the structure is simple and easy to use.

[0019] By providing a first frame and a reinforcing strip in the limiting extrusion mechanism, not only can the deformability of the first frame be further enhanced by utilizing the first lightweight groove opened on the first frame, but the production cost of the first frame can also be reduced. At the same time, the design of the reinforcing strip enhances the hardness at the edge of the first frame, making the stability of the first frame better, so that when the first frame is used to compress the cotton sheet body, the cotton sheet body can better fit the patient's skin, and the first frame can better squeeze the second frame when deformed by force, so that the second frame can clean the surface of the rubber band more thoroughly, and the first frame and the second frame are used to press the cotton sheet body to the outer opening of the fistula, which can absorb the blood or fluid flowing out of the fistula, effectively preventing the problem of blood or fluid flowing out and contaminating clothes or bed sheets during surgery, and the structure is simple, and the coordinated use of the structures further makes the use of the limiting extrusion mechanism better.

[0020] By providing a limiting protrusion and a limiting groove in the device, not only can the limiting protrusion and the limiting groove be used in combination, the threaded sleeve can be further quickly and stably limited and fixed on the side of the outer sheath body close to the end block when not in use, the coordinated use between the structures further makes the use effect of the limiting extrusion mechanism better, and the structure is relatively simple, and the coordinated use between the structures effectively makes the use effect of the device better.

[0021] To sum up, this device can not only make the anal fistula hanging work more efficient through the coordinated use of the limiting extrusion mechanism and the various components therein, and prevent the problem of the rubber band falling off during the hanging process, but also can clean the end of the rubber band when the rubber band is removed from the fistula during hanging, which is convenient for subsequent knotting operations and further increases the work effect. In addition, the structure of this device is simple, and it is easy and quick to use. The production cost of the device is low, and the practicality is good, which is convenient for promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable one skilled in the art to make and use the invention.

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of an anal fistula seton needle with a retractable grasping forceps;

[0024] Figure 2 for Figure 1 A in the middle is an enlarged structural diagram;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the outer sheath body and the inner wire;

[0026] Figure 4 for Figure 3 The enlarged structural diagram at B in the middle;

[0027] Figure 5 It is a schematic diagram of a partially enlarged cross-sectional three-dimensional structure of the outer sheath body;

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the cotton sheet body and the first skeleton;

[0029] Figure 7 for Figure 6 The enlarged structural diagram at C in the middle;

[0030] Figure 8 This is a schematic diagram of the cross-sectional structure of the first skeleton and the second skeleton;

[0031] Figure 9 It is a schematic diagram of a partially enlarged three-dimensional structure of the first frame and the second frame in the folded state;

[0032] Figure 10 for Figure 2 Enlarged structural diagram at point D in the middle.

[0033] Reference numerals:

[0034] 1. Handle body; 2. Joint body; 3. Inner thread; 4. Clamping forceps; 5. Outer sheath body; 6. Segmented groove; 7. End block; 8. Limit block; 9. Limit groove; 10. Slider; 11. Slide groove; 12. Threaded sleeve block; 13. Connecting block; 14. First skeleton; 15. Reinforcement strip; 16. First lightweight groove; 17. Second skeleton; 18. Second lightweight groove; 19. Concave portion; 20. First weakened portion; 21. Connecting skeleton; 22. Second weakened portion; 23. Cotton piece body; 24. Limiting protrusion; 25. Limiting groove; 26. Threaded block body; 27. Reinforcement block.

[0035] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0036] The following describes in detail an anal fistula seton needle with a retractable grasping forceps provided by the present invention, in conjunction with the accompanying drawings and specific embodiments. It is also noted that, to provide a more detailed description, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative implementations for known techniques. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0037] It should be noted that references in the specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment includes such specific features, structures, or characteristics. In addition, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments, regardless of whether such features, structures, or characteristics are explicitly described.

[0038] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0039] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” means not only “directly on” something but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” means not only “on” or “above” something but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0040] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.

[0041] like Figures 1 to 10As shown, an embodiment of the present invention provides an anal fistula hanging needle with a retractable grasping forceps, comprising a handle body 1, a joint body 2 is provided on the top of the handle body 1, an inner thread 3 is installed on the side of the joint body 2 away from the handle body 1, an inner core is provided in the inner thread 3, a clamping forceps 4 is installed on the end of the inner core away from the handle body 1, an outer wall of the inner thread 3 is sleeved with an outer sheath body 5, a reinforcing block 27 is fixedly connected to the side of the inner thread 3 close to the joint body 2, a threaded block 26 is fixedly connected to the side of the reinforcing block 27 close to the joint body 2, a threaded sleeve block 12 is sleeved on the outer sheath body 5, a connecting block 13 is installed on the outer wall of the threaded sleeve block 12, and a cotton piece body 23 is installed on the outer sheath body 5; a limiting extrusion mechanism, the limiting extrusion mechanism is used to limit the cotton piece body 23 and to squeeze and clean the rubber band during surgery, and the limiting extrusion mechanism is installed on the connecting block 13.

[0042] An elastic strip is provided at the bottom of the handle body 1, so that the handle body 1 is in an open state in a natural state. One handle of the handle body 1 is fixedly connected to the inner thread 3, and the other handle is connected to the inner core in the inner thread 3. A movable groove is provided at the bottom of the inner thread 3 close to the joint body 2, so that when the handle body 1 is closed, the two handles inside it rotate along the joint body 2, causing the inner core in the inner thread 3 to pull the connecting piece at the clamping clamp 4, and then the clamping clamp 4 is expanded, forming a pressing of the handle body 1, and the clamping clamp 4 starts to grasp. When the handle body 1 is released, the clamping clamp 4 naturally closes to grasp the rubber band. The above-mentioned connecting piece is an existing mature technology and will not be described in detail here.

[0043] like Figure 10 As shown, the diameter of the reinforcing block 27 is larger than the diameter of the internal thread 3, the diameter of the threaded sleeve 12 is equal to the diameter of the threaded block body 26, the inner wall of the connecting block 13 is provided with an internal thread that is adapted to the shape of the outer wall of the threaded sleeve 12, the outer walls of the threaded sleeve 12 and the threaded block body 26 are provided with external threads, and the cotton sheet body 23 is made of medical cotton material, and an opening is provided on the cotton sheet body 23.

[0044] The inner thread 3 and the outer sheath body 5 are used in conjunction with each other, so that the device can be folded together when not in use for easy storage, and the folded clamping forceps 4 will not accidentally touch other objects. At the same time, the inner thread 3 and the outer sheath body 5 have a certain deformation ability, so that they can change according to the shape of the fistula tract when entering the fistula tract, so as to better move in the fistula tract. After passing through the fistula tract, the clamping forceps 4 are used to grasp the rubber band, and then the inner thread 3 and the outer sheath body 5 are pulled to drive the rubber band out of the fistula tract. During the pulling-out process, the pulled-out rubber band is slightly squeezed by the limiting extrusion mechanism to scrape off the adhered liquid on the rubber band, thereby facilitating the subsequent knotting operation of the rubber band. In the whole process, the cotton sheet body 23 is pressed tightly against the outer opening of the fistula tract by the limiting mechanism, so that blood or effusion flowing out of the fistula tract can be absorbed, effectively preventing the problem of blood or effusion flowing out and contaminating clothes or bed sheets during the operation. In addition, the structure of the device is simple and quick to use. The working principle and positional relationship of the limiting extrusion mechanism and the various components therein are described in detail below.

[0045] like Figures 2 to 5 As shown, the outer sheath body 5 is provided with segmented grooves 6 at equal distances on the side away from the handle body 1, the inner wire 3 and the outer sheath body 5 are made of stainless steel, the outer sheath body 5 is fixedly connected to the side of the handle body 1 with an end block 7, and the end block 7 is installed on the outer wall of the side close to the handle body 1. A limiting groove 9 that is adapted to the shape of the limiting block 8 is provided on the inner wire 3, and a slider 10 is fixedly connected to the side of the limiting block 8 close to the end block 7. A sliding groove 11 that is adapted to the shape of the slider 10 is provided on the side of the end block 7 close to the limiting block 8. The slider 10 is made of plastic material, the slider 10 is wide in the middle and narrow on both sides, and a buffer cavity is provided on both sides of the slider 10.

[0046] By opening the segmented groove 6, the outer sheath body 5 has better deformation ability, and the material cost of the outer sheath body 5 is reduced. The stainless steel material has good deformation ability, and the use of the structure makes the use effect of the structure better. The end block 7 is set to limit one side of the threaded sleeve 12, so that the threaded sleeve 12 slides toward the end block 7 and slides to the maximum fit with the end block 7. The setting of the limiting block 8 and the limiting groove 9 is used to make the inner wire 3 and the outer sheath body 5 remain relatively stationary when the clamping pliers 4 are retracted at the inner end of the outer sheath body 5, so that the outer sheath body 5 and the inner wire 3 can be kept together. The end block 7 is convenient to use and easy to operate, and the user can operate the end block 7 in a simple and convenient manner.

[0047] like Figures 3 to 9 As shown, the position limiting extrusion mechanism includes a first frame 14 mounted on the connecting block 13, a connecting frame 21 is equidistantly mounted on the inner wall of the first frame 14, a second frame 17 is fixedly connected to the side of the connecting frame 21 away from the first frame 14, and a reinforcing strip 15 is fixedly connected to the edge of the side of the first frame 14 away from the handle body 1, as shown in FIG. Figure 6 As shown, the reinforcing strip 15 is a ring-shaped thin strip, and the cross-section of the reinforcing strip 15 is a circular ring. The first frame 14 and the reinforcing strip 15 are an integrated structure. The advantage of this arrangement is that the hardness at the edge of the first frame 14 is enhanced, making the first frame 14 more stable. At the same time, the design of the reinforcing strip 15 enhances the hardness at the edge of the first frame 14, making the first frame 14 more stable. By sliding the threaded sleeve 12 on the outer sheath body 5 to the side end of the outer sheath body 5 away from the handle body 1, and driving the connecting block 13 and the first skeleton 14 thereon close to the patient's skin, the cotton sheet body 23 is cut into a size that matches the shape of the outer sheath body 5 and is placed between the reinforcing strip 15 and the patient's skin. The user presses the first skeleton 14 toward the patient's skin with his hand, so that the first skeleton 14 on the connecting block 13 presses the cotton sheet body 23, so that the cotton sheet body 23 is tightly attached to the patient's skin, and the second skeleton 17 assists in squeezing the cotton sheet body 23, so that the cotton sheet body 23 is more stably attached to the patient's skin. Then, using the guidance of the second skeleton 17 in the first skeleton 14, the inner wire 3 and the outer sheath body 5 are guided along the second skeleton 17 from the external opening of the anal fistula into the fistula tract.

[0048] The cotton sheet body 23 is sleeved on the inner wire 3, and the cotton sheet body 23 is between the patient's skin and the first frame 14 and the second frame 17. Since the user applies force to the first frame 14, the cotton sheet body 23 is always separated from the skin during use, so when the liquid flowing out of the fistula is completely absorbed by the cotton sheet body 23, it will not flow out. At the same time, the auxiliary squeezing of the cotton sheet body 23 by the second frame 17 makes the cotton sheet body 23 more stably attached to the patient's skin. The inner wire 3 and the clamping forceps 4 pass through the fistula, and after the clamping forceps 4 complete the clamping work of the rubber band, the limit block 8 is connected to the limit groove 9, and the handle body 1 is pulled to take out the inner wire 3 and the outer sheath body 5 again along the guidance of the first frame 14 and the second frame 17. When the rubber band is pulled out of the fistula and close to the second frame 17, the first frame 14 is pressed by hand to squeeze the reinforcing strip 15 inward to connect the frame 21 The deformation tendency becomes larger, thereby causing the second skeleton 17 to produce an inward deformation and extrusion tendency, and the clamping forceps 4 at the end of the inner wire 3 are used to remove the clamped rubber band from the fistula tract, and the second skeleton 17 is always kept close to the patient's skin during this process. When the inner wire 3 passes through the second skeleton 17, the rubber band can be in contact with the second skeleton 17, and the second skeleton 17 is used to squeeze and scrape the outer wall of the rubber band, while continuing to pull the rubber band out. During the process, most of the liquid adhering to the outer wall of the rubber band can be effectively cleaned, so as to keep the end section of the rubber band as clean as possible, thereby facilitating the subsequent knotting operation of the rubber band, preventing the adhesive liquid from making the rubber band knotting difficult or causing the problem of slipping knots, and the structure is simple, and the coordinated use of the structures further makes the use effect of the device better, and is convenient for medical staff to use and operate, while effectively improving work efficiency.

[0049] The first skeleton 14 is made of plastic material, and a first lightweight groove 16 is equidistantly provided in a ring on the first skeleton 14 to enhance the deformability of the first skeleton 14 and reduce the weight of the first skeleton 14. A second lightweight groove 18 is equidistantly provided in a ring on the second skeleton 17, and a recess 19 is provided in the middle of the second skeleton 17. A first weakened portion 20 is provided in the middle of the second skeleton 17. The second skeleton 17 is made of plastic material, and the connecting skeleton 21 is an arc-shaped structure with a protrusion in the middle toward the handle body 1. The connecting skeleton 21 is made of plastic material, and a second weakened portion 22 is provided in the middle of the connecting skeleton 21. A limiting groove 25 is provided on the inner wall of the threaded sleeve 12 near the handle body 1, and a limiting protrusion 24 that matches the shape of the limiting groove 25 is fixedly connected to the outer wall of the end block 7 near the clamping clamp 4. The plastic material has a low cost and good deformation ability.

[0050] When the first frame 14 is used to compress the cotton sheet body 23, the cotton sheet body 23 can better fit the patient's skin, and the opening of the second lightweight groove 18 makes the second frame 17 more deformable and reduces the production cost of the second frame 17. In addition, the recess 19 is used to make the part of the second frame 17 close to the recess 19 easier to bend and deform first, and the opening of the first weakened portion 20 further makes the second frame 17 closer to the recess 19 easier to deform, so that the second frame 17 has a better squeezing effect on the rubber band, and the outer sheath body 5 can be stably fixed on the outer wall of the inner wire 3 when not in use, and the connecting frame 21 is used to connect the outer wall of the outer sheath 5. The edges of the first skeleton 14 and the second skeleton 17 are connected together, so that when the first skeleton 14 is pressed, the pressure can be transmitted to the second skeleton 17 through the connecting skeleton 21, thereby causing the second skeleton 17 to deform. The second weakened portion 22 is opened to make the part of the connecting skeleton 21 close to the second weakened portion 22 more likely to deform, and the limiting protrusion 24 and the limiting groove 25 are used in combination, so that the threaded sleeve 12 can be quickly limited and fixed on the side of the outer sheath body 5 close to the end block 7 when not in use. The coordinated use of the structures further makes the use effect of the limiting extrusion mechanism better, and the structure is relatively simple, the production cost is low, and it is easy to use and operate.

[0051] The present invention has two use states. In the expanded use state, the outer sheath body 5 is sleeved on the inner wire 3, and the handle body 1 is in a naturally expanded state. First, the clamping forceps 4 are folded and retracted at the end of the inner wire 3 away from the handle body 1, and the limit block 8 is clamped in the limit groove 9. The various components in the limit extrusion mechanism are installed on the outer wall of the outer sheath body 5, the cotton sheet body 23 is sleeved on the inner wire 3, and the outer sheath body 5 and the inner wire 3 are in a relatively static state. Then, after the inner wire 3 and the outer sheath body 5 pass through the anal fistula, the limit groove 9 and the limit block 8 are clamped in the limit groove 9. The positioning block 8 is separated, pushing the inner thread 3 to make the clamping forceps 4 slide out from the end of the outer sheath body 5, pressing the handle body 1 to open the clamping forceps 4 to clamp the rubber band. During the process, the cotton sheet body 23 is between the patient's skin and the reinforcing strip 15. Since the end block 7 and the limiting block 8 are fixedly connected, the inner thread 3 and the outer sheath body 5 remain relatively stationary. Before the line hanging operation, first slide the threaded sleeve block 12 and the connecting block 13 close to the handle body 1 in the direction away from the handle body 1 quickly, straighten the inner thread 3 and the outer sheath body 5, and straighten the inner thread 3 of the hook. The outer sheath body 5 is easier to enter the fistula and changes with the bending of the fistula. Then, manually press the first frame 14, so that the threaded sleeve block 12 drives the first frame 14 and the second frame 17 to be sleeved on the end of the outer sheath body 5 away from the handle body 1. When the second frame 17 guides the outer sheath body 5, the second frame 17 is in a natural bending state and does not squeeze the outer wall of the outer sheath body 5. After passing through the fistula, the inner wire 3 and the outer sheath body 5 pass through the anal fistula, so that the limiting groove 9 and the limiting block 8 are separated, and the inner wire 3 is pushed to clamp the clamp. 4 slides out from the end of the outer sheath body 5, presses the handle body 1 to open the clamping forceps 4 to clamp the rubber band, and after grasping, releases the clamping forceps 4 to grasp the rubber band, and connects the limiting groove 9 and the limiting block 8 together, and then pulls the handle body 1 to pull the inner wire 3 and the outer sheath body 5 to pull the rubber band out of the fistula tract. During the pulling process, the user always presses the first frame 14 with his hand to make the first frame 14 and the second frame 17 close to the skin, and at the same time uses the second frame 17 to limit and guide the outer sheath body 5. When the rubber band is pulled out of the fistula tract and approaches the second frame 17, the first frame 14 is pressed harder by hand to squeeze the reinforcing strip 15 inward, thereby increasing the deformation tendency of the connecting frame 21 and causing the second frame 17 to have an inward deformation and squeezing tendency. The outer wall of the rubber band in contact with it is squeezed and scraped by the cotton sheet body 23, and most of the liquid adhering to the outer wall of the rubber band can be effectively cleaned off during the process, thereby keeping the end section of the rubber band as clean as possible, thereby facilitating the subsequent knotting operation of the rubber band. After the rubber band is pulled out of the second frame 17 to the required length, the cotton sheet body 23 and the various components thereon are removed from the patient's skin.

[0052] In the folded state, the handle body 1 is in a naturally expanded state, the outer sheath body 5 is sleeved on the inner thread 3, the clamping forceps 4 are closed and located outside the outer sheath body 5, the limit blocks 8 and the limit grooves 9 are staggered, so that the threaded sleeve block 12 and the threaded block body 26 are close to each other. Figure 9 As shown, the threaded sleeve 12 and the threaded block body 26 are respectively located on both sides of the end block 7 in this state. The user rotates the connecting block 13 to make the connecting block 13 slide out of the threaded sleeve 12 and pass through the end block 7, and then continues to rotate the connecting block 13 to make the connecting block 13 sleeved on the threaded block body 26. When adjusting the position of the connecting block 13, the connecting block 13 pulls the second skeleton 17 to make the second skeleton 17 approach the threaded sleeve 12, so that the second skeleton 17 is squeezed and deformed to be sleeved on the threaded sleeve 12, so that the outer sheath body 5 and the inner wire 3 are in a relatively static state in this state.

[0053] The working principle of the technical solution provided by the present invention is as follows:

[0054] When in use, first the outer sheath body 5 is sleeved on the inner thread 3, and the handle body 1 is in a naturally expanded state, and then the clamping forceps 4 are folded in a folded shape to the side end of the inner thread 3 away from the handle body 1, and the limit block 8 is clamped in the limit groove 9, and the various components in the limit extrusion mechanism are installed on the outer wall of the outer sheath body 5, the cotton sheet body 23 is sleeved on the inner thread 3, and the outer sheath body 5 and the inner thread 3 are in a relatively static state, and the threaded sleeve 12 is slid on the outer sheath body 5 to the side end of the outer sheath body 5 away from the handle body 1, and drive the connecting block 13 and the first skeleton 14 thereon to approach the patient's skin, so that the first skeleton 14 presses the cotton sheet body 23 so that the cotton sheet body 23 is tightly attached to the patient's skin, and the user presses the first skeleton 14 with his hand, and then uses the first skeleton 14 and the second skeleton 17 to guide the insertion operation of the inner thread 3 and the outer sheath body 5 into the fistula tract.

[0055] After the inner thread 3 and the outer sheath body 5 are passed through the anal fistula, the end block 7 is close to the limit block 8 installed on the outer wall of the handle body 1 and separated from the limit groove 9 which is provided on the inner thread 3 and the shape of the limit block 8. Then, the inner thread 3 is pushed to make the clamping forceps 4 slide out from the end of the outer sheath body 5, and the handle body 1 is pressed to make the clamping forceps 4 open to clamp the rubber band. Then, the limit block 8 is stuck in the limit groove 9 and connected together again. Then, the handle body 1 is manually held to pull the inner thread 3 and the outer sheath body 5 outwards. After the inner wire 3 and the clamping forceps 4 pass through the fistula tract, the inner wire 3 and the outer sheath body 5 are taken out again along the guidance of the first frame 14 and the second frame 17. When the rubber band is pulled out of the fistula tract together with the clamping forceps 4 at the end of the inner wire 3 and approaches the second frame 17, the force of pressing the first frame 14 is increased by hand to squeeze the reinforcing strip 15 inward, so that the deformation tendency of the connecting frame 21 becomes larger, and then the second frame 17 produces an inward deformation and squeezing tendency. As the rubber band is pulled out of the fistula tract and contacts the second frame 17, the squeezed and deformed second frame 17 squeezes the rubber band, thereby using the second frame 17 to squeeze and scrape the outer wall of the rubber band. In the process, most of the liquid adhering to the outer wall of the rubber band can be effectively cleaned off, so as to keep the end section of the rubber band as clean as possible, thereby facilitating the subsequent knotting operation of the rubber band and preventing the adhesive liquid from making the rubber band knotting difficult or causing the problem of slipping knots.

[0056] After completion, the limiting extrusion mechanism and the cotton sheet body 23 are removed from the patient's skin along the rubber band, and then the rubber band is knotted. After use, the various components of the device are disassembled and cleaned, and the various components in the device are assembled together after drying. During assembly, the handle body 1 is in a naturally expanded state, the clamping forceps 4 is closed and located outside the outer sheath body 5, the limiting blocks 8 and the limiting grooves 9 are staggered, so that the threaded sleeve block 12 is close to the threaded block body 26, as shown in FIG. Figure 9As shown, the threaded sleeve 12 and the threaded block body 26 are respectively located on both sides of the end block 7 in this state. The user rotates and adjusts the position of the connecting block 13 so that the connecting block 13 is sleeved on the threaded block body 26. When adjusting the position of the connecting block 13, the connecting block 13 pulls the second skeleton 17 so that the second skeleton 17 approaches the threaded sleeve 12. The second skeleton 17 is squeezed and deformed and sleeved on the threaded sleeve 12, so that the outer sheath body 5 and the inner wire 3 are in a relatively static state, and the second skeleton 17 is squeezed and deformed and sleeved on the threaded sleeve 12. Since the second skeleton 17 is in a natural state when not affected by external force, it fits with the outer wall of the outer sheath body 5 in this state, and the outer diameter of the threaded sleeve 12 is larger than the outer diameter of the outer sheath body 5, so that the second skeleton 17 will be deformed and squeezed when it approaches the threaded sleeve 12. Therefore, by utilizing the coordinated use of the threaded block body 26, the threaded sleeve 12 and the second skeleton 17, the various structures in the device can be stably folded together to prevent the loss of parts when the device is not in use. In addition, stably folding the structures together can facilitate the storage of the device and reduce space occupancy.

[0057] The end block 7 is provided to limit one side of the threaded sleeve 12, so that the threaded sleeve 12 slides in the direction of the end block 7 to the maximum extent that it fits with the end block 7. The setting of the limit block 8 and the limit groove 9 is used to make the inner thread 3 and the outer sheath body 5 remain in a relatively static state when the clamping forceps 4 are retracted in the outer sheath body 5, so that the outer sheath body 5 and the inner thread 3 enter and pass through the fistula tract together, and the setting of the slider 10 and the slide groove 11 makes the limit block 8 movable on the end block 7, so that the limit block 8 can be quickly stuck in the limit groove 9 or disengaged from the limit groove 9, and the shape setting of the slider 10 and the design of the buffer cavity therein are used to make the slider 10 squeeze with the inner wall of the slide groove 11 in a natural state, so that the limit block 8 can be engaged with the end block 7 without being affected by external forces. Block 7 remains relatively still, and the coordinated use of the structures further improves the stability of the device. The connection frame 21 is used to connect the edges of the first frame 14 and the second frame 17 together, so that when the first frame 14 is pressed, the pressure can be transmitted to the second frame 17 through the connection frame 21, thereby causing the second frame 17 to deform. The second weakened portion 22 is opened to make the part of the connection frame 21 close to the second weakened portion 22 more likely to deform. In the folded state, the connection frame 21 and the first frame 14 and the second frame 17 can also be used in coordination to make the second frame 17 have a better extrusion effect on the threaded sleeve block 12, thereby improving the stability between the device structures. The structure of this device is simple and easy to use.

[0058] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. While specific details are described in detail in the preferred embodiments to provide a thorough understanding of the present invention, those skilled in the art will be able to fully understand the present invention without these details. Furthermore, to avoid unnecessary confusion regarding the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0059] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An anal fistula seton needle with a retractable grasping forceps, characterized in that: The handle comprises a handle body, a joint body is provided on the top of the handle body, an inner thread is installed on the side of the joint body away from the handle body, an inner core is provided in the inner thread, a clamp is installed on the end of the inner core away from the handle body, an outer sheath body is sleeved on the outer wall of the inner thread, a reinforcing block is fixedly connected to the side of the inner thread close to the joint body, a threaded block is fixedly connected to the side of the reinforcing block close to the joint body, a threaded sleeve block is sleeved on the outer sheath body, a connecting block is installed on the outer wall of the threaded sleeve block, and a cotton piece body is installed on the outer sheath body; A limiting and squeezing mechanism, which is used to limit the position of the cotton piece body and squeeze and clean the rubber band during surgery, and is installed on the connecting block; The outer sheath body is provided with segmented grooves at equal intervals on one side away from the handle body, and the inner wire and the outer sheath body are made of stainless steel; The position limiting extrusion mechanism includes a first frame mounted on the connecting block, connecting frames are equidistantly mounted on the inner wall of the first frame, and a second frame is fixedly connected to a side of the connecting frame away from the first frame.

2. The anal fistula seton needle with a retractable grasping forceps according to claim 1, characterized in that: An end block is fixedly connected to one side of the outer sheath body close to the handle body, a limit block is installed on the outer wall of one side of the end block close to the handle body, and a limit groove that matches the shape of the limit block is opened on the inner thread.

3. The anal fistula seton needle with a retractable grasping forceps according to claim 2, characterized in that: A sliding block is fixedly connected to one side of the limiting block close to the end block, and a sliding groove that is adapted to the shape of the sliding block is provided on one side of the end block close to the limiting block.

4. The anal fistula seton needle with a retractable grasping forceps according to claim 3, characterized in that: The slider is made of plastic material, is wide in the middle and narrow at both sides, and has a buffer cavity on both sides of the slider.

5. The anal fistula seton needle with a retractable grasping forceps according to claim 1, characterized in that: The first frame is made of plastic material. First lightweight grooves are equidistantly arranged in a circular pattern on the first frame. A reinforcement strip is fixedly connected to an edge of a side of the first frame away from the handle body.

6. The anal fistula seton needle with a retractable grasping forceps according to claim 1, characterized in that: The second frame is provided with second lightweight grooves at equal intervals in a ring shape, a recess is provided in the middle of the second frame, a first weakened portion is provided in the middle of the second frame, and the second frame is made of plastic material.

7. The anal fistula seton needle with a retractable grasping forceps according to claim 1, characterized in that: The connecting frame is an arc-shaped structure with a middle portion protruding toward the handle body. The connecting frame is made of plastic material, and a second weakened portion is provided in the middle portion of the connecting frame.

8. The anal fistula seton needle with a retractable grasping forceps according to claim 2, characterized in that: The inner wall of the threaded sleeve block close to the handle body is provided with a limiting groove, and the outer wall of the end block close to the clamping pliers is fixedly connected with a limiting protrusion that matches the shape of the limiting groove.

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