Anal fistula seton needle with telescopic grasping forceps

Abstract

The invention provides an anal fistula seton needle with telescopic grasping forceps, and belongs to the technical field of anal fistula seton. Comprising a handle body, a joint body is arranged at the top of the handle body, an internal thread is installed on the side, away from the handle body, of the joint body, an inner core is arranged in the internal thread, and clamping forceps are installed at the end of the side, away from the handle body, of the inner core. By arranging the internal thread, the outer sheath body and the limiting extrusion mechanism, the device can be folded together when not used through cooperative use of the internal thread and the outer sheath body, storage is convenient, the folded clamping pliers cannot touch other objects by mistake, meanwhile, the internal thread and the outer sheath body have certain deformation capacity, and the clamping pliers are convenient to use. The rubber band can be changed according to the shape of the fistulous tract when entering the fistulous tract, so that the rubber band can better advance in the fistulous tract, the rubber band is tightly grasped through a pair of clamping forceps after passing through the fistulous tract, and then the inner thread and the outer sheath body are pulled to drive the rubber band to be pulled out of the fistulous tract together.

Description

Technical Field

[0001] The present invention relates to the technical field of anal fistula thread-drawing, and particularly relates to an anal fistula thread-drawing needle with a retractable grasping forceps. Background Art

[0002] Anal fistula thread-drawing is a traditional Chinese medicine treatment method mainly used for treating anal fistulas. Specifically, anal fistula thread-drawing means using a rubber band or silk thread to pass through the internal and external openings of the anal fistula, using the retraction force of the rubber band to block the blood circulation on the ligated side, and at the same time using the mechanical pressure and contraction force of the rubber band to bluntly and slowly dissect the fistula tract. The principle of this method is that the ligated tissue gradually necroses due to ischemia and finally separates. At the same time, the thread-drawing can also serve as the drainage of the fistula tract, enabling the inflammatory secretions to be discharged smoothly, keeping the drainage unobstructed, and preventing infection.

[0003] The traditional surgical instrument for anal fistula thread-drawing is a probe. After confirming the fistula tract, it is necessary to pass the probe through the fistula tract, and then pass the rubber band 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 likely to slip during the process of passing through the fistula tract, resulting in difficult operation when most existing related probes perform this operation, and greatly reducing the working efficiency of the surgery. Therefore, the present application provides an anal fistula thread-drawing 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 thread-drawing needle with a retractable grasping forceps. By setting an inner wire, an outer sheath body, and a limiting and squeezing mechanism, not only can the device be folded together when not in use through the cooperation of the inner wire and the outer sheath body, which is convenient for storage, and the folded clamping forceps will not accidentally touch other objects, but also the inner wire and the outer sheath body have a certain deformation ability. Through the above settings, the problem that the existing most probes have difficult thread-drawing operations and affect the working efficiency can be solved.

[0005] To solve the above technical problems, the present invention provides the following technical solutions:

[0006] An anal fistula thread-drawing needle with a retractable grasping forceps, comprising a handle body, a joint body is arranged at the top of the handle body, an inner wire is installed on one side of the joint body away from the handle body, an inner core is arranged inside the inner wire, a clamping forceps is installed at one end of the inner core away from the handle body, an outer sheath body is sleeved on the outer wall of the inner wire, a reinforcing block is fixedly connected to one side of the inner wire close to the joint body, a threaded block body is fixedly connected to one 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 sheet body is installed on the outer sheath body; a limiting and squeezing mechanism, which is used for limiting the cotton sheet body and squeezing and cleaning the rubber band during the operation, and the limiting and squeezing mechanism is installed on the connecting block.

[0007] Optionally, segmented grooves are equidistantly formed on one 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, a terminal block is fixedly connected to one side of the outer sheath body close to the handle body, a limiting block is installed on the outer wall of the terminal block close to the handle body, and a limiting groove adapted to the shape of the limiting block is formed on the inner wire.

[0009] Optionally, a slider is fixedly connected to one side of the limiting block close to the terminal block, and a sliding groove adapted to the shape of the slider is formed on one side of the terminal block close to the limiting block.

[0010] Optionally, the slider is made of plastic, the slider is wide in the middle and narrow on both sides, and buffer cavities are formed on both sides of the slider.

[0011] Optionally, the limiting and extruding mechanism includes a first skeleton installed on the connecting block, connecting skeletons are annularly and equidistantly installed on the inner wall of the first skeleton, and a second skeleton is fixedly connected to one side of the connecting skeleton away from the first skeleton.

[0012] Optionally, the first skeleton is made of plastic, first lightweight grooves are annularly and equidistantly formed on the first skeleton, and a reinforcing strip is fixedly connected to the edge of one side of the first skeleton away from the handle body.

[0013] Optionally, second lightweight grooves are annularly and equidistantly formed on the second skeleton, a concave portion is provided in the middle of the second skeleton, a first weakening portion is formed in the middle of the second skeleton, and the second skeleton is made of plastic.

[0014] Optionally, the connecting skeleton is an arc-shaped structure with a middle convex toward the handle body, the connecting skeleton is made of plastic, and a second weakening portion is formed in the middle of the connecting skeleton.

[0015] Optionally, a limiting groove is formed on the inner wall of one side of the threaded sleeve block close to the handle body, and a limiting convex block adapted to the shape of the limiting groove is fixedly connected to the outer wall of one side of the terminal 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 solution, by setting the internal thread, the outer sheath body and the limiting extrusion mechanism, not only can the device be folded together when not in use through the cooperation of the internal thread and the outer sheath body, which is convenient for storage, but also the internal 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. At the same time, the outer wall of the rubber band is extruded and scraped by the limiting extrusion mechanism, and the rubber band is continuously pulled out. Most of the liquid adhered to the outer wall of the rubber band can be effectively cleaned during the process, so as to keep the section at the end of the rubber band as clean as possible, and then facilitate the subsequent knotting operation of the rubber band, prevent the adhesion liquid from making it difficult to tie a knot in the rubber band or cause the problem of slipping knots. Moreover, the structure is simple, which is convenient for quickly removing the rubber band from the anal fistula. The cooperation between the structures effectively makes the use effect of the device better, and the structure of the device is simple, which is convenient for the operation and use of medical staff.

[0018] By providing a second skeleton and a second weakening part in the limiting extrusion mechanism, the outer sheath body can be stably fixed on the outer wall of the internal thread when not in use by using the cooperation of the second skeleton, the threaded sleeve block, the connecting block and the threaded block body. The connecting skeleton is provided to connect the edges of the first skeleton and the second skeleton together, 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 opening of the second weakening part makes the part of the connecting skeleton closer to the second weakening part more likely to deform, and the opening of the second lightweight groove can make the deformation ability of the second skeleton better, and reduce the production cost of the second skeleton. Moreover, by providing the concave part, the part of the second skeleton closer to the concave part is more likely to bend and deform first, and the opening of the first weakening part further makes the second skeleton closer to the concave part more likely to deform, so that the extrusion effect of the second skeleton on the rubber band is better, so that when the rubber band is taken out from the anal fistula, there will be no a lot of liquid remaining on the outer wall, which causes difficulty in knotting. Moreover, the cooperation between the structures effectively makes the use effect of the limiting extrusion mechanism better, and the structure is simple and convenient to use.

[0019] By providing a first framework and reinforcing strips inside the limiting extrusion mechanism, not only can the deformability of the first framework be further enhanced by utilizing the first lightweight grooves provided on the first framework, while reducing the production cost of the first framework, but also the design of the reinforcing strips enhances the hardness at the edge of the first framework, making the stability of the first framework better. As a result, when the first framework is used to press the cotton sheet body, the cotton sheet body can better fit the patient's skin, and when the first framework deforms under force, it can produce a better extrusion on the second framework, thereby enabling the second framework to more thoroughly clean the surface of the rubber band. Moreover, by using the first framework and the second framework to press the cotton sheet body at the outer opening of the fistula tract, the blood or effusion flowing out of the fistula tract can be adsorbed, effectively preventing the problem of blood or effusion flowing out during the operation and contaminating clothes or sheets. Additionally, the structure is simple, and the coordinated use of the structures further improves the use effect of the limiting extrusion mechanism.

[0020] By providing limiting bumps and limiting grooves inside the device, not only can the threaded sleeve block be further quickly and stably limited and fixed on one side of the outer sheath body close to the end block by utilizing the coordinated use of the limiting bumps and limiting grooves, but also the coordinated use of the structures further improves the use effect of the limiting extrusion mechanism, and the structure is relatively simple. Moreover, the coordinated use of the structures effectively improves the use effect of the device.

[0021] In summary, this device can not only more efficiently perform the anal fistula thread-drawing operation through the coordinated use of the limiting extrusion mechanism and its various components, preventing the problem of the rubber band falling off during the thread-drawing process, but also clean the end of the rubber band when the rubber band is pulled out from the fistula tract during thread-drawing, facilitating subsequent knotting operations, further enhancing the working effect. Additionally, the structure of this device is simple, convenient and fast to use, and the production cost of the device is low, with good practicability and being convenient for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the specification, are further used to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0023] Figure 1 is a three-dimensional structural schematic diagram of an anal fistula thread-drawing needle with a retractable grasping forceps;

[0024] Figure 2 is Figure 1 the enlarged structural schematic diagram at A in

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

[0026] Figure 4 isFigure 3 Schematic diagram of the enlarged structure at position B in the [device name];

[0027] Figure 5 Schematic diagram of the three-dimensional structure of the partial enlarged cross-section of the outer sheath body;

[0028] Figure 6 Schematic diagram of the three-dimensional structure of the cooperation between the cotton sheet body and the first framework;

[0029] Figure 7 It is Figure 6 Schematic diagram of the enlarged structure at position C in the [device name];

[0030] Figure 8 Schematic diagram of the cross-sectional structure of the cooperation between the first framework and the second framework;

[0031] Figure 9 Schematic diagram of the partial enlarged three-dimensional structure of the cooperation between the first framework and the second framework in the closed state;

[0032] Figure 10 It is Figure 2 Schematic diagram of the enlarged structure at position D in the [device name].

[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. Slide block; 11. Slide groove; 12. Threaded sleeve block; 13. Connecting block; 14. First framework; 15. Reinforcing strip; 16. First lightweight groove; 17. Second framework; 18. Second lightweight groove; 19. Concave part; 20. First weakening part; 21. Connecting framework; 22. Second weakening part; 23. Cotton sheet body; 24. Limit convex block; 25. Limit concave groove; 26. Threaded block body; 27. Reinforcing block.

[0035] As shown in the figure, in order to clearly show the structure of the embodiments of the present invention, specific structures and devices are marked in the figure. However, this is only for schematic purposes and is not intended to limit the present invention to this specific structure, device, and environment. Those of ordinary skill in the art can adjust or modify these devices and environments according to specific needs. Detailed implementation manners

[0036] The following describes in detail a anal fistula thread-drawing needle with a telescopic grab forceps provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0037] It should be noted that in the specification, the mention of "an embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc. indicates that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment includes such specific features, structures, or characteristics. Additionally, when combining embodiments to describe a specific feature, structure, or characteristic, the implementation of such a feature, structure, or characteristic in combination with other embodiments, whether explicitly described or not, should be within the knowledge of those skilled in the relevant art.

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

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

[0040] Furthermore, spatial relative terms such as "under", "below", "lower", "above", "upper", etc. are used herein for convenience of description to describe the relationship of one element or feature to another or other elements or features, as shown in the drawings. The spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the drawings. The device can be oriented in other ways, and the spatial relative descriptive terms used herein can be similarly interpreted accordingly.

[0041] Such as Figures 1 to 10As shown in the figure, an embodiment of the present invention provides an anal fistula thread-hanging needle with a retractable gripper, which includes a handle body 1. A joint body 2 is provided at 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 inside the inner thread 3. A clamping pliers 4 is installed at the end of the inner core away from the handle body 1. An outer sheath body 5 is sleeved on the outer wall of the inner thread 3. A reinforcing block 27 is fixedly connected to the side of the inner thread 3 close to the joint body 2. A threaded block body 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. A cotton sheet body 23 is installed on the outer sheath body 5; a limiting and squeezing mechanism, which is used to limit the cotton sheet body 23 and squeeze and clean the rubber band during the operation, and the limiting and squeezing 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 the 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 inside the inner thread 3. An activity groove is opened at the bottom of the inner thread 3 on the side close to the joint body 2. When the handle body 1 is closed, the two handles inside it rotate along the joint body 2, causing the inner core inside the inner thread 3 to pull the connecting piece at the clamping pliers 4, and then the clamping pliers 4 is unfolded to form pressing the handle body 1, and the clamping pliers 4 is unfolded to grab the work. When the handle body 1 is released, the clamping pliers 4 naturally closes to grip the rubber band. The above-mentioned connecting piece is a mature existing technology and will not be elaborated here.

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

[0044] Through the combined use of the internal wire 3 and the outer sheath body 5, the device can be folded together when not in use, which is convenient for storage. Moreover, the folded clamping pliers 4 will not accidentally touch other objects. At the same time, the internal wire 3 and the outer sheath body 5 have a certain deformation ability, so that they can change according to the shape of the fistula when entering the fistula, thus better advancing in the fistula. After passing through the fistula, the rubber band is grasped by the clamping pliers 4, and then the internal wire 3 and the outer sheath body 5 are pulled to drive the rubber band to be pulled out of the fistula together. During the pulling process, the pulled rubber band is slightly squeezed by the limit extrusion mechanism to scrape off the adhesive liquid on the rubber band, so as to facilitate the subsequent knotting operation of the rubber band. And during the whole process, the cotton sheet body 23 is pressed tightly at the outer opening of the fistula by the limit mechanism, which can adsorb the blood or effusion flowing out of the fistula, effectively preventing the problem of blood or effusion flowing out during the operation and polluting clothes or sheets. And the structure of this device is simple and convenient to use. The working principle and positional relationship of the above-mentioned limit extrusion mechanism and its various components are described in detail below.

[0045] As Figures 2 to 5 shown, on the side of the outer sheath body 5 away from the handle body 1, segmented grooves 6 are equidistantly arranged. The internal wire 3 and the outer sheath body 5 are made of stainless steel. On the side of the outer sheath body 5 close to the handle body 1, an end block 7 is fixedly connected. On the outer wall of the side of the end block 7 close to the handle body 1, a limit block 8 is installed. A limit groove 9 matching the shape of the limit block 8 is opened on the internal wire 3. On the side of the limit block 8 close to the end block 7, a sliding block 10 is fixedly connected. On the side of the end block 7 close to the limit block 8, a sliding groove 11 matching the shape of the sliding block 10 is opened. The sliding block 10 is made of plastic. The sliding block 10 is wide in the middle and narrow on both sides. Buffer cavities are opened on both sides of the sliding block 10.

[0046] By providing the segmented slots 6, the deformability of the outer sheath body 5 is improved, while reducing the material cost of the outer sheath body 5. Moreover, the stainless-steel material has good deformability, and the use of the structure makes the use effect of the structure better. The end block 7 is provided to limit one side of the threaded sleeve block 12, so that when the threaded sleeve block 12 slides towards the end block 7, it can slide at most until it fits against the end block 7. The limit block 8 and the limit slot 9 are provided so that when the clamping forceps 4 are retracted into the inner end of the outer sheath body 5, the inner wire 3 and the outer sheath body 5 can remain relatively stationary, so that the outer sheath body 5 and the inner wire 3 can enter and pass through the fistula together. Moreover, the slider 10 and the chute 11 are provided so that the limit block 8 can move on the end block 7, enabling the limit block 8 to quickly snap into or out of the limit slot 9. And by using the shape setting of the slider 10 and the design of its inner buffer cavity, the slider 10 presses against the inner wall of the chute 11 in the natural state, so that the limit block 8 can remain relatively stationary with the end block 7 without external force. The combined use of the structures further improves the stability of the device, making the use effect of the device better. Moreover, the structure is simple, has good practicability, and is convenient for users to use and operate.

[0047] As Figures 3 to 9 shown, the limit extrusion mechanism includes a first skeleton 14 installed on the connection block 13. The inner wall of the first skeleton 14 is annularly and equidistantly installed with connection skeletons 21. The side of the connection skeleton 21 away from the first skeleton 14 is fixedly connected with a second skeleton 17. The edge of the side of the first skeleton 14 away from the handgrip body 1 is fixedly connected with a reinforcing strip 15. As Figure 6 shown, the reinforcing strip 15 is a circular ring of thin strips, and the cross-section of the reinforcing strip 15 is circular. The first skeleton 14 and the reinforcing strip 15 are integrally formed structures. The advantage of this setting is that it enhances the hardness of the edge of the first skeleton 14, making the stability of the first skeleton 14 better. At the same time, the design of the reinforcing strip 15 enhances the hardness of the edge of the first skeleton 14, making the stability of the first skeleton 14 better. By sliding the threaded sleeve block 12 on the outer sheath body 5 to the end of the outer sheath body 5 away from the handgrip body 1 and driving the connection block 13 and the first skeleton 14 thereon close to the patient's skin, the cotton sheet body 23 is cut into a size adapted to the shape of the outer sheath body 5 and placed between the reinforcing strip 15 and the patient's skin. The user presses the first skeleton 14 towards the patient's skin with their hand, so that the first skeleton 14 on the connection block 13 presses the cotton sheet body 23 tightly, making the cotton sheet body 23 closely adhere to the patient's skin. Moreover, the second skeleton 17 assists in squeezing the cotton sheet body 23, making the cotton sheet body 23 more stably attached to the patient's skin. Then, using the guidance of the second skeleton 17 inside the first skeleton 14, the inner wire 3 and the outer sheath body 5 enter the fistula from the external fistula opening along the guidance of the second skeleton 17.

[0048] The cotton sheet body 23 is sleeved on the inner wire 3. The cotton sheet body 23 is located between the patient's skin, the first skeleton 14 and the second skeleton 17. Due to the user applying force to the first skeleton 14, the cotton sheet body 23 will not separate from the skin during use. Therefore, when the liquid flowing out of the fistula is completely adsorbed by the cotton sheet body 23 and will not flow outside. At the same time, the second skeleton 17 assists in squeezing the cotton sheet body 23, making 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. After the clamping forceps 4 complete the clamping work of the rubber band, the limiting block 8 is connected to the limiting groove 9. Pull the handle body 1 to take out the inner wire 3 and the outer sheath body 5 again along the guidance of the first skeleton 14 and the second skeleton 17. When the rubber band is drawn out from the fistula and approaches the second skeleton 17, press the first skeleton 14 by hand to make the reinforcing strip 15 squeeze inward, increasing the deformation trend of the connecting skeleton 21, and further causing the second skeleton 17 to have an inward deformation and extrusion trend. Use the clamping forceps 4 at the end of the inner wire 3 to remove the clamped rubber band from the fistula, and keep the second skeleton 17 in close contact with the patient's skin during this process. When the inner wire 3 passes through the second skeleton 17, the rubber band can come into contact with the second skeleton 17. Use the second skeleton 17 to squeeze and scrape the outer wall of the rubber band. At the same time, continue to pull out the rubber band. Most of the liquid adhered to the outer wall of the rubber band can be effectively cleaned during the process, so as to keep the section at the end of the rubber band as clean as possible, which is convenient for the subsequent knotting operation of the rubber band, preventing the adhesion liquid from making it difficult to knot the rubber band or causing the problem of slipping knots. And the structure is simple, and the cooperation between the structures further makes the use effect of the device better, and is convenient for the use and operation of medical staff, and effectively improves the work efficiency.

[0049] The first skeleton 14 is made of plastic. The first lightweight grooves 16 are annularly and equidistantly arranged on the first skeleton 14 to enhance the deformability of the first skeleton 14 and reduce the weight of the first skeleton 14 at the same time. The second lightweight grooves 18 are annularly and equidistantly arranged on the second skeleton 17. There is a concave part 19 in the middle of the second skeleton 17. The first weakening part 20 is arranged in the middle of the second skeleton 17. The second skeleton 17 is made of plastic. The connecting skeleton 21 is an arc-shaped structure with the middle protruding towards the handle body 1. The connecting skeleton 21 is made of plastic. The second weakening part 22 is arranged in the middle of the connecting skeleton 21. A limiting groove 25 is arranged on the inner wall of the side of the threaded sleeve block 12 close to the handle body 1. A limiting convex block 24 with a shape adapted to the limiting groove 25 is fixedly connected to the outer wall of the side of the end block 7 close to the clamping forceps 4. The cost of plastic is relatively low and it has good deformability.

[0050] When the first frame 14 is used to press the cotton sheet body 23, the cotton sheet body 23 can better fit the skin of the patient. Moreover, the formation of the second lightweight groove 18 improves the deformation ability of the second frame 17 and reduces the production cost of the second frame 17. By means of the provided recess 19, the part of the second frame 17 close to the recess 19 is more likely to bend and deform first. Furthermore, the formation of the first weakening part 20 makes the second frame 17 more likely to deform in the direction close to the recess 19, so that the squeezing effect of the second frame 17 on the rubber band is better, and the outer sheath body 5 can be stably fixed on the outer wall of the inner wire 3 when not in use. The connection frame 21 is provided 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 formation of the second weakening part 22 makes the part of the connection frame 21 close to the second weakening part 22 more likely to deform. By using the cooperation of the limit bump 24 and the limit groove 25, the threaded sleeve block 12 can be quickly limited and fixed on one side of the outer sheath body 5 close to the end block 7 when not in use. The cooperation of the structures further improves the use effect of the limit extrusion mechanism, and the structure is relatively simple, with a low production cost, and is convenient for use and operation.

[0051] This device has two usage states. In the deployed usage state, the outer sheath body 5 is sleeved on the inner wire 3, and the handle body 1 is in a natural deployed state. First, the clamping pliers 4 are closed and located on 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. Each component in the limit extrusion mechanism is 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 passing the inner wire 3 and the outer sheath body 5 through the anal fistula, the limit groove 9 and the limit block 8 are separated. Push the inner wire 3 to make the clamping pliers 4 slide out from the end of the outer sheath body 5. Press the handle body 1 to open the clamping pliers 4 to clamp the rubber band. During the process, the cotton sheet body 23 is located between the patient's skin and the reinforcing strip 15. Since the end block 7 and the limit block 8 are fixedly connected, the inner wire 3 and the outer sheath body 5 remain relatively static. Before performing the thread-hanging operation, first quickly slide the threaded sleeve block 12 and the connecting block 13 in the direction away from the handle body 1 towards the direction of the handle body 1 to straighten the inner wire 3 and the outer sheath body 5. The inner wire 3 and the outer sheath body 5 of the straightening hook are more likely to enter the fistula and bend with the fistula. Then manually hold the first skeleton 14 to make the threaded sleeve block 12 drive the first skeleton 14 and the second skeleton 17 to be sleeved on the end of the outer sheath body 5 away from the handle body 1. When the second skeleton 17 guides the outer sheath body 5, the second skeleton 17 is in a natural bent state and does not cause extrusion on the outer wall of the outer sheath body 5. After passing through the fistula, pass the inner wire 3 and the outer sheath body 5 through the anal fistula, separate the limit groove 9 and the limit block 8, push the inner wire 3 to make the clamping pliers 4 slide out from the end of the outer sheath body 5, press the handle body 1 to open the clamping pliers 4 to clamp the rubber band. After grasping, release and use the clamping pliers 4 to tightly hold the rubber band, and connect the limit groove 9 and the limit block 8 together. Then pull the handle body 1 to pull the inner wire 3 and the outer sheath body 5 to drive the rubber band to be pulled out from the fistula together. During the pulling process, the user always holds the first skeleton 14 with the hand to make the first skeleton 14 and the second skeleton 17 closely adhere to the skin, and at the same time use the second skeleton 17 to limit and guide the outer sheath body 5. When the rubber band is drawn out from the fistula and approaches the second skeleton 17, increase the pressing force on the first skeleton 14 with the hand to make the area of the reinforcing strip 15 squeeze inwards, making the deformation trend of the connecting skeleton 21 larger, and further making the second skeleton 17 generate an inward deformation and extrusion trend. Use the cotton sheet body 23 to squeeze and scrape the outer wall of the rubber band in contact with it. During the process, most of the liquid adhered to the outer wall of the rubber band can be effectively cleaned, so as to keep a section of the end of the rubber band as clean as possible, and then facilitate the subsequent knotting operation of the rubber band. After pulling out the required length of the rubber band from the second skeleton 17, remove the cotton sheet body 23 and its various components and the cotton sheet body 23 from the patient's skin;

[0052] In the retracted state, the handle body 1 is in a natural unfolded state. The outer sheath body 5 is sleeved on the inner wire 3. The clamping pliers 4 are in a closed state outside the outer sheath body 5. The limiting blocks 8 and the limiting grooves 9 are distributed alternately, making the threaded sleeve block 12 close to the threaded block body 26. As Figure 9 shown, in this state, the threaded sleeve block 12 and the threaded block body 26 are respectively located on both sides of the end block 7. The user rotates the connecting block 13, so that the connecting block 13 slides out from the threaded sleeve block 12 and passes through the end block 7, and then continues to rotate 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, making the second skeleton 17 approach the threaded sleeve block 12. Thus, the second skeleton 17 is deformed by extrusion and sleeved on the threaded sleeve block 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] During use, first, the outer sheath body 5 is sleeved on the inner wire 3, and the handle body 1 is in a natural unfolded state. Then, the clamping pliers 4 are retracted in a closed state on the end of the inner wire 3 far from the handle body 1, and the limiting block 8 is clamped in the limiting groove 9. Each component in the limiting and extruding mechanism is installed on the outer wall of the outer sheath body 5. The cotton sheet body 23 is sleeved on the inner wire 3. The outer sheath body 5 and the inner wire 3 are in a relatively static state. The threaded sleeve block 12 is slid on the outer sheath body 5 to the end of the outer sheath body 5 far from the handle body 1, and the connecting block 13 and the first skeleton 14 thereon are driven to approach the patient's skin, so that the first skeleton 14 presses the cotton sheet body 23 tightly against the patient's skin. The user presses the first skeleton 14 by hand, and then uses the first skeleton 14 and the second skeleton 17 to guide the insertion operation of the inner wire 3 and the outer sheath body 5 into the fistula tract.

[0055] During this period, the cotton sheet body 23 is cut into a size adapted to the shape of the outer sheath body 5 and placed between the reinforcing strip 15 and the patient's skin. During the entire wire threading operation, the user always presses the first skeleton 14 towards the patient's skin with the hand, so that the edge of the first skeleton 14 close to the reinforcing strip 15 squeezes the cotton sheet body 23, making the cotton sheet body 23 tightly adhere to the patient's skin at the external orifice of the anal fistula. Then, pull the handle body 1 to pass the inner wire 3 and the outer sheath body 5 through the anal fistula, so that the end block 7 is separated from the limit block 8 installed on the outer wall of the side of the handle body 1, and the limit groove 9 formed on the inner wire 3 with a shape adapted to the limit block 8. Then, push the inner wire 3 to make the clamping pliers 4 slide out from the end of the outer sheath body 5, press the handle body 1 to open the clamping pliers 4 to clamp the rubber band, and then make the limit block 8 be clamped in the limit groove 9 and connected together again. Then, hold the handle body 1 and pull the inner wire 3 and the outer sheath body 5 outwards. After the inner wire 3 and the clamping pliers 4 pass through the fistula tract, the inner wire 3 and the outer sheath body 5 are taken out again along the guiding directions of the first skeleton 14 and the second skeleton 17. When the rubber band is drawn out of the fistula tract together with the clamping pliers 4 at the end of the inner wire 3 and approaches the second skeleton 17, strengthen the pressing force of the first skeleton 14 with the hand, so that the inner part of the reinforcing strip 15 is squeezed inwards, making the deformation trend of the connecting skeleton 21 become larger, and further making the second skeleton 17 generate an inward deformation and extrusion trend. As the rubber band is drawn out of the fistula tract and contacts the second skeleton 17, the second skeleton 17 subjected to extrusion deformation squeezes the rubber band, thereby effectively cleaning most of the liquid adhered to the outer wall of the rubber band by squeezing and scraping the outer wall of the rubber band by the second skeleton 17 during the process, so as to keep the section at the end of the rubber band as clean as possible, and further facilitating the subsequent knotting operation of the rubber band and preventing problems such as difficult knotting or slipping of the knot caused by the adhered liquid.

[0056] After completion, the limit 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, each component of the device is disassembled and cleaned. After drying, each component in the device is assembled together. When assembling, the handle body 1 is in a natural unfolded state, the clamping pliers 4 are in a closed state outside the outer sheath body 5, and the limit block 8 and the limit groove 9 are staggered, making the threaded sleeve block 12 close to the threaded block body 26, as Figure 9As shown, the threaded sleeve block 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 position of the adjusting connection block 13 so that the connection block 13 is sleeved on the threaded block body 26. When adjusting the position of the connection block 13, the connection block 13 pulls the second skeleton 17, causing the second skeleton 17 to approach the threaded sleeve block 12. The second skeleton 17 is extruded and deformed to be sleeved on the threaded sleeve block 12, so that the outer sheath body 5 and the inner wire 3 are in a relatively static state. The second skeleton 17 is extruded and deformed to be sleeved on the threaded sleeve block 12. Since the second skeleton 17 is in a natural state without external force, it fits against the outer wall of the outer sheath body 5 in this state. The outer diameter of the threaded sleeve block 12 is larger than the outer diameter of the outer sheath body 5, so that when the second skeleton 17 approaches the threaded sleeve block 12, it will be deformed and extruded. Thus, by using the cooperation of the threaded block body 26, the threaded sleeve block 12 and the second skeleton 17, the various structures in the device are stably closed together, preventing parts from being missing when the device is not in use, and closing the structures together stably also facilitates the storage of the device, reducing the space occupied.

[0057] The setting of the end block 7 is used to limit one side of the threaded sleeve block 12, so that when the threaded sleeve block 12 slides towards the end block 7, it can slide at most until it fits against the end block 7. The setting of the limiting block 8 and the limiting groove 9 is used to keep the inner wire 3 and the outer sheath body 5 in a relatively static state when the clamping pliers 4 are closed in the outer sheath body 5, so that the outer sheath body 5 and the inner wire 3 can enter and pass through the fistula together. The setting of the slider 10 and the chute 11 enables the limiting block 8 to move on the end block 7, so that the limiting block 8 can be quickly clamped into the limiting groove 9 or separated from the limiting groove 9. And due to the shape setting of the slider 10 and the design of its internal buffer cavity, the slider 10 is extruded against the inner wall of the chute 11 in the natural state, so that the limiting block 8 can remain relatively static with the end block 7 without external force. The cooperation of the structures further improves the stability of the device. And the setting of the connecting skeleton 21 connects the edges of the first skeleton 14 and the second skeleton 17 together, so that when pressing the first skeleton 14, the pressure can be transmitted to the second skeleton 17 through the connecting skeleton 21, causing the second skeleton 17 to deform. The opening of the second weakening part 22 makes the part of the connecting skeleton 21 closer to the second weakening part 22 more likely to deform. And in the closed state, the cooperation of the connecting skeleton 21, the first skeleton 14 and the second skeleton 17 can also be used to make the extrusion effect of the second skeleton 17 on the threaded sleeve block 12 better, and further improve the stability between the device structures. The structure of this device is simple and convenient to use.

[0058] The present invention encompasses any alternatives, modifications, equivalent methods, and solutions made within the spirit and scope of the present invention. For the purpose of enabling the public to have a thorough understanding of the present invention, specific details are elaborated in the preferred embodiments of the present invention. However, those skilled in the art can fully understand the present invention even without the description of these details. Additionally, well-known methods, processes, procedures, components, and circuits are not described in detail to avoid unnecessary confusion to the essence of the present invention.

[0059] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An anal fistula hanging needle with a retractable grasping forceps, characterized in that: It comprises a handle body, a joint body is arranged 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 arranged 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 body 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 sheet body is installed on the outer sheath body; A limiting and squeezing mechanism is used to limit the position of the cotton piece body and squeeze and clean the rubber band during the operation. The limiting and squeezing mechanism is installed on the connecting block.

2. The anal fistula hanging needle with a retractable grasping forceps according to claim 1, characterized in that: 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.

3. The anal fistula hanging 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 limiting block is installed on an outer wall of one side of the end block close to the handle body, and a limiting groove matching the shape of the limiting block is provided on the inner thread.

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

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

6. The anal fistula hanging needle with a retractable grasping forceps according to claim 1, characterized in that: The position limiting extrusion mechanism comprises a first frame mounted on the connecting block, a connecting frame is equidistantly mounted on the inner wall of the first frame in an annular manner, and a second frame is fixedly connected to a side of the connecting frame away from the first frame.

7. The anal fistula hanging needle with a retractable grasping forceps according to claim 6, characterized in that: The first frame is made of plastic material, and first lightweight grooves are equidistantly arranged in an annular shape on the first frame. A reinforcing strip is fixedly connected to an edge of one side of the first frame away from the handle body.

8. The anal fistula hanging needle with a retractable grasping forceps according to claim 6, characterized in that: The second frame is provided with second lightweight grooves at equal intervals in an annular manner, 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.

9. The anal fistula hanging needle with a retractable grasping forceps according to claim 6, 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.

10. The anal fistula hanging needle with a retractable grasping forceps according to claim 3, characterized in that: The inner wall of the threaded sleeve block on one side close to the handle body is provided with a limiting groove, and the outer wall of the end block on one side close to the clamping pliers is fixedly connected with a limiting protrusion matched with the shape of the limiting groove.

Images