A device for treating anal fistulas

Abstract

The present application relates to a kind of device for treating anal fistula, comprising: silk thread;Magnetic beads, spherical structure, the number of the magnetic beads is multiple, multiple the magnetic beads are connected on the silk thread;Blocking structure, fixedly connected in the middle of the silk thread, for blocking the inner mouth of the anal fistula.The device for treating anal fistula provided by the present application can be used instead of probe, and will not damage the tissue around fistula;Through the magnetism of magnetic beads, the magnetic beads in the inner mouth of anal fistula can be easily sucked out of the anus, without finger into anus blind find, easy to operate;After the device passes through fistula, the magnetic beads at both ends of silk thread are attracted to form closed loop structure, and the magnetic attraction between the magnetic beads generates continuous compression force on the tissue in closed loop, so that the tissue in closed loop is ischemic necrosis, and the reliability during use is improved, since silk thread is not easy to break;Blocking structure can reliably block the inner mouth of anal fistula, prevent dirt from entering fistula, and is beneficial to healing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, more particularly, to a device for treating anal fistula. BACKGROUND

[0002] Anal fistula refers to an abnormal channel formed between the rectum or anal canal and the skin around the anus, also known as anal canal rectal fistula, and is simply referred to as anal fistula, which is composed of three parts, i.e., internal orifice, fistula tract and external orifice, and is one of common rectal anal diseases.

[0003] Anal fistula cannot be cured by itself and needs surgical treatment. Currently, the treatment of medium and high anal fistula mainly adopts the thread hanging method. The operation steps of the traditional thread hanging method are as follows: (1) a probe is inserted into the internal orifice with the help of fingers; (2) the front end of the probe is bent and pulled out of the anus; (3) a silk thread is tied to the front end of the probe and connected to a rubber band; and (4) the probe is withdrawn and the rubber band is pulled out of the fistula tract and ligated with the silk thread. In this way, the tissue clamped by the rubber band will be ischemic and necrotic, gradually turning black and falling off, and at the same time, the subsequent new tissue will also grow up at the same time as the original tissue falls off, filling the fistula tract, and the anal fistula is cured.

[0004] However, the traditional thread hanging surgery has the following disadvantages: (1) a long and thin metal probe is used to explore the internal orifice of the anal fistula, which is easy to cause damage to the surrounding tissue when the probe is exploring in the fistula tract; (2) the metal needle is not easy to bend, and after the internal orifice is found, the fingers of the operator need to be inserted into the anus to bend the probe and then take it out of the anus, which increases the pain experience of the patient; (3) when exploring to find the internal orifice, the doctor often encounters internal orifice closure, i.e., false healing or unsmooth channel, so it is difficult to find the correct internal orifice and the thread cannot be hung, and a cutting operation needs to be performed first, which increases the pain of the patient; (4) after the thread is hung, the anus of the patient is always in a contracted state due to pain, so that the wound outside the anus cannot be completely opened, and the wound that has been ligated is often quickly adhered together again, resulting in unsmooth drainage of the external orifice and easy recurrence of the fistula tract; (5) the rubber band connected to the probe is easy to fall off and break, the former increases the difficulty of the operation, and the latter needs 2 operations; (6) when the thread is hung, the silk thread needs to be gradually tightened according to the degree of tissue necrosis, and finally the tissue inside the silk thread is completely necrotic and the silk thread falls off. However, the step of tightening the silk thread is complicated and easy to cause the rubber band to break, resulting in failure of the operation.

[0005] In addition, when the thread hanging method is used to treat anal fistula, there is often a gap between the internal orifice and the thread, and the patient's excrement enters the fistula tract through the gap during defecation, which affects healing and even causes more serious inflammation and abscess, increasing the pain of the patient. SUMMARY

[0006] Therefore, the purpose of the present application is to provide a device for treating anal fistula to solve the problems in the prior art.

[0007] According to the present application, a device for treating anal fistula is provided, comprising:

[0008] a wire;

[0009] magnetic beads, spherical structure, the surface of the magnetic beads plated with nano silver ions, the number of the magnetic beads is multiple, multiple magnetic beads are connected on the wire;

[0010] a blocking structure, fixedly connected to the middle of the wire, for blocking the internal orifice of the anal fistula;

[0011] wherein, each of the magnetic beads is provided with a groove, the groove is arranged along the length direction of the wire, the groove of the plurality of magnetic beads on one side of the blocking structure is provided with a catheter.

[0012] Preferably, each of the magnetic beads is provided with a flow guide hole, the flow guide hole penetrates the bottom wall of the groove, the catheter is provided with a first hole corresponding to the flow guide hole on the magnetic bead.

[0013] Preferably, each of the magnetic beads is provided with a ring-shaped flow guide groove on the outer surface, the flow guide groove penetrates the two side walls of the groove, and the catheter is provided with a second hole corresponding to the flow guide groove on the magnetic bead.

[0014] Preferably, the wire is titanium wire.

[0015] Preferably, the magnetic beads are made of neodymium magnet.

[0016] Preferably, the diameter of the magnetic bead is 2mm-3mm.

[0017] Preferably, the wire is provided with barbs, and the barbs are uniformly distributed along the length direction of the wire.

[0018] Preferably, the blocking structure is an inflatable air bag, and one side of the air bag is provided with an inflation valve.

[0019] Preferably, the end of the air bag away from the inflation valve is in a tapered structure.

[0020] Preferably, the blocking structure is a biological membrane, and the edge of the biological membrane is provided with hooks.

[0021] The device for treating anal fistula provided by the application can replace the probe and will not damage the tissue around the fistula by arranging a plurality of magnetic beads on the silk thread, the plurality of magnetic beads can be straightened when being tightened and can be freely bent when being relaxed; for the anal fistula with a very small internal opening, the magnetic beads can be used to indicate the opening, the magnetic bead at one end of the silk thread can be used to suck the magnetic bead at the internal opening out of the anus through the magnetic bead at the other end of the silk thread, and the operation is simple; for the anal fistula with internal opening adhesion or false healing, the adhesion or false healing point can be naturally perforated and reopened by using the magnetic beads to attract each other on both sides of the internal opening; after the device passes through the fistula, the magnetic beads at both ends of the silk thread are attracted to form a closed loop structure, the magnetic attraction force between the magnetic beads can continuously press the tissue in the closed loop, the tissue in the closed loop is ischemic and necrotic, the silk thread is not easy to break, the reliability during use is improved, the magnetic beads have a certain diameter, the wound opened by the magnetic beads will not be re-adhered, the external opening is unobstructed, and the fistula is not easy to recur; the plugging structure can reliably plug the internal opening of the anal fistula, prevent the dirt from entering the fistula, and be beneficial to healing. In addition, the catheter can be arranged on the magnetic bead, and the catheter can be used to wash the fistula, discharge pus, inject anesthetic agents and the like. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above and other objects, features and advantages of the present application will become more apparent from the following description of embodiments of the present application with reference to the accompanying drawings.

[0023] Figure 1 A structure schematic diagram of the device for treating anal fistula is shown.

[0024] Figure 2 For Figure 1 A sectional view at A-A in the middle.

[0025] Figure 3 A structure schematic diagram of the device for treating anal fistula is shown.

[0026] Figure 4 For Figure 3 A sectional view at B-B in the middle.

[0027] Figure 5 A structure schematic diagram of the device for treating anal fistula is shown.

[0028] Figure 6 For Figure 5 A structure schematic diagram of the device for treating anal fistula in a biological membrane opening state.

[0029] Figure 7 For Figure 6 A sectional view at C-C in the middle.

[0030] Figure 8Structure diagram of the hook and barb on the biological membrane of the device for treating anal fistula according to the embodiments of the present application.

[0031] In the figure: silk thread 1, barb 11, magnetic beads 2, through hole 21, groove 22, flow guide hole 23, flow guide groove 24, air bag 3, inflation valve port 31, catheter 4, first hole 41, second hole 42, biological membrane 5, hook and barb 51, hook and barb body 511, hook and barb barb 512, support skeleton 52. DETAILED DESCRIPTION

[0032] Various embodiments of the present application will be described in greater detail below with reference to the accompanying drawings. In the various drawings, the same elements are denoted by the same or similar reference numerals for the sake of clarity. Various parts in the drawings are not drawn to scale for the sake of clarity.

[0033] Referring to Figure 1 and Figure 2 , the present application provides a device for treating anal fistula, comprising a silk thread 1, magnetic beads 2 and a plugging structure. The silk thread 1 is a flexible structure that can be freely bent, facilitating threading in the fistula. The magnetic beads 2 are spherical structures, the number of magnetic beads 2 is multiple, and a through hole 21 is formed in the middle of the magnetic beads 2, the diameter of the through hole 21 is slightly larger than the diameter of the silk thread 1, and multiple magnetic beads 2 are threaded on the silk thread 1 in sequence through the through hole 21. The plugging structure is fixedly connected to the middle of the silk thread 1, and is used to plug the inner opening of the anal fistula through the plugging structure after the device is threaded through the inner opening of the fistula, preventing dirt from entering the fistula through the gap at the inner opening to affect healing.

[0034] When the device is in use, the silk thread 1 together with the magnetic beads 2 thereon is inserted from the outer opening of the anal fistula and comes out from the inner opening of the anal fistula, the silk thread 1 at the outer fistula opening is appropriately cut, and then the two ends of the magnetic beads 2 are attracted to each other to form a closed loop structure, and the continuous pressure on the tissue inside the closed loop is determined.

[0035] The magnetic bead string on the silk thread 1 can form a stable ring, the middle segment of the magnetic bead string will not be attracted, and the magnetic bead string has the characteristics that the magnetic force at both ends of the magnetic bead string is strong, and the magnetic force in the middle segment tends to be zero. For a magnetic bead string, the attractive force between the newly added magnetic beads 2 and the two ends of the magnetic bead string is greater than the attractive force between the magnetic beads 2 and the middle segment of the magnetic bead string, so the magnetic beads 2 must be connected to the end of the magnetic bead string, and the two ends of the magnetic bead string have a tendency to attract each other to form a ring.

[0036] The surface of the magnetic beads 2 is plated with nano silver ions. Nano silver ions have antibacterial and bactericidal effects, and can effectively activate and promote the growth of tissue cells, accelerating wound healing.

[0037] A groove 22 is arranged on each magnetic bead 2, and the groove 22 extends along the length direction of the silk thread 1. A catheter 4 is arranged in the groove 22 of the magnetic bead 2 on one side of the blocking structure. The catheter 4 is adhered or clamped in the groove 22 of the magnetic bead 2. The first end of the catheter 4 is located at the first end of the silk thread 1, and the second end of the catheter 4 is located on one side of the blocking structure. Through the catheter 4, the fistula can be irrigated, and the pus can be discharged. In addition, an anesthetic agent can be injected through the catheter 4 to reduce the pain of the patient. In addition, a negative pressure suction ball or a negative pressure air bag can be connected to the first end of the catheter 4 as a matched component to suck out the excess gas in the fistula, so that a negative pressure is formed in the fistula to effectively promote healing. The first end of the catheter 4 can also be externally connected to a barometer to measure the negative pressure suction pressure.

[0038] Further, in order to increase the effect of the catheter 4 on discharging pus in the fistula, the pus exuded from each part of the fistula can be discharged outside through the catheter 4. A flow guide hole 23 is arranged on each magnetic bead 2, and the flow guide hole 23 penetrates the bottom wall of the groove 22. A first hole 41 is arranged on the catheter 4 and corresponds to the flow guide hole 23 on the magnetic bead 2. The pus generated in the fistula can flow into the catheter 4 through the flow guide hole 23 on the magnetic bead 2 and the first hole 41 on the catheter 4, and then be discharged through the catheter 4. At the same time, the irrigation effect of the fistula can also be improved.

[0039] Referring to Figure 3 and Figure 4 In an optional embodiment of the present application, a ring-shaped flow guide groove 24 is arranged on the outer surface of each magnetic bead 2, and the flow guide groove 24 penetrates the two side walls of the groove 22. A second hole 42 is arranged on the catheter 4 and corresponds to the flow guide groove 24 on the magnetic bead 2. Similarly, the pus generated in the fistula can flow into the catheter 4 through the flow guide groove 24 on the magnetic bead 2 and the second hole 42 on the catheter 4, and then be discharged through the catheter 4.

[0040] In the embodiment, the diameter of the silk thread 1 is less than 0.5 mm, and the silk thread 1 is a titanium wire. The titanium wire has the advantages of light weight, high strength, good toughness, and good corrosion resistance. When the titanium wire is used for treating anal fistula, the silk thread 1 is less likely to break, and the reliability is relatively high. The diameter of the magnetic bead 2 is 2 mm to 3 mm, and the magnetic bead 2 is made of a neodymium magnet with strong magnetism. It can be understood that in other alternative embodiments, the silk thread 1 can also be selected from other metal wires.

[0041] Further, the wire 1 is provided with barbs 11, which are evenly distributed along the length direction of the wire 1. Specifically, one end of the wire 1 opposite to the tip of the barb 11 is defined as the first end of the wire 1 (shown as 1a in the figure), and the other end is defined as the second end of the wire 1 (shown as 1b in the figure). When the magnetic beads 2 are threaded on the wire 1, the magnetic beads 2 are threaded from the first end of the wire 1 to the second end of the wire 1. Since the wire 1 is provided with the barbs 11, the magnetic beads 2 can only slide from the first end of the wire 1 to the second end of the wire 1, and it is difficult to slide out in the opposite direction. The magnetic bead 2 located at the second end of the wire 1 can be fixedly connected to the wire 1 to prevent it from falling off the wire 1. The magnetic bead 2 can be fixedly connected to the second end of the wire 1 by adhesion or welding, or the second end of the wire 1 can be knotted to prevent the magnetic bead 2 from falling off the second end of the wire 1.

[0042] As shown in Figure 1 In this embodiment, the plugging structure is an inflatable air bag 3, and an inflation valve port 31 for inflating the air bag 3 is arranged on one side of the air bag 3. Before use, the air bag 3 is in an uninflated state, which facilitates the passage through the fistula. In use, the second end of the wire 1 is threaded into the outer opening of the anal fistula, and the magnetic beads 2 are threaded into the fistula one by one. When the magnetic bead 2 at the second end of the wire 1 reaches the inner opening of the anal fistula, the magnetic bead 2 at the inner opening is attracted out of the anus by the magnetic bead 2 at the first end of the wire 1, avoiding the trouble of searching and exploring. The second end of the wire 1 is pulled to pull out the air bag 3 from the anus, the inflation tube is inserted into the inflation valve port 31 of the air bag 3, and then the first end of the wire 1 is pulled to pull the air bag 3 back to the inner opening of the anal fistula. Inflation is performed to make the air bag 3 fill the inner opening of the anal fistula after inflation, and the inflation tube is removed after inflation. The end of the air bag 3 away from the inflation valve port 31 is in a tapered structure, which can effectively plug the inner opening of the anal fistula to prevent dirt from entering the fistula from the gap.

[0043] Referring to Figures 5 to 7 In an optional embodiment of the present application, the plugging structure is a biological membrane 5, and the edge of the biological membrane 5 is provided with barbs 51. The biological membrane 5 is used to fit at the inner opening of the anal fistula to plug the inner opening and block the dirt such as feces from entering the fistula from the inner opening.

[0044] Specifically, the biological membrane 5 is in a circular shape, the center of the circular biological membrane 5 is fixedly connected to the silk thread 1, a plurality of support skeletons 52 are arranged on the biological membrane 5, the plurality of support skeletons 52 are uniformly distributed on the biological membrane 5 in a radial manner with the silk thread 1 as the center, and the biological membrane is in an umbrella shape. Before the device is sent into the fistula, the biological membrane 5 is folded to be in a closed state, the diameter of the biological membrane 5 in the closed state is smaller than the diameter of the magnetic beads 2, so that the device is convenient to pass through the fistula, when the device is inserted into the external opening of the anal fistula, the opening direction of the biological membrane 5 in the closed state is opposite to the insertion direction, so that the internal opening of the anal fistula is convenient to explore. When the biological membrane 5 passes through the fistula to reach the internal opening of the anal fistula, the biological membrane 5 is opened and in an umbrella opening shape, the silk thread 1 is reversely pulled, the biological membrane 5 is attached to the intestinal wall, and the hooking thorn 51 at the edge of the biological membrane 5 is hooked on the intestinal wall, so that the biological membrane 5 is fixed, the internal opening of the anal fistula is plugged, and excrement pollution is prevented. Figure 8 As shown in the figure, the hooking thorn 51 comprises a hooking thorn body 511 and a hooking barb 512, the root of the hooking thorn body 511 is connected to the biological membrane 5, the head of the hooking thorn body 511 is pointed, so that the hooking thorn body 511 is convenient to be stabbed into the colon mucosa, and the hooking barb 512 is arranged at the head of the hooking thorn body 511 and is arranged to be inclined towards the root of the hooking thorn body 511, so that the hooking thorn 51 is prevented from falling out after being stabbed into the colon mucosa. The length of the hooking thorn on the biological membrane 5 is 3-4 mm, and in the later healing process, the biological membrane 5 can be discharged automatically. This is because the colon mucosa can be renewed automatically, and the thickness of the colon mucosa is generally 5-7 mm, so that the hooking thorn 51 with a length of 3-4 mm can finally be discharged with the mucosa layer.

[0045] The device for treating anal fistula provided by the application can replace the probe and will not damage the tissue around the fistula by arranging a plurality of magnetic beads on the silk thread, the plurality of magnetic beads can be arranged in a straight line when being tightened and can be freely bent when being relaxed; for the anal fistula with a very small internal opening, the magnetic beads can be used to indicate the opening, the magnetic bead at one end of the silk thread can be pulled out of the anus through the magnetic bead at the other end of the silk thread after reaching the internal opening of the anal fistula, so that the fingers do not need to be inserted into the anus to find the magnetic bead, and the operation is simple; for the anal fistula with a false healing internal opening, the false healing point can be naturally perforated and reopened by attracting the magnetic beads on both sides of the false healing internal opening; after the device passes through the fistula, the magnetic beads at both ends of the silk thread are attracted to form a closed loop structure, the magnetic attraction force between the magnetic beads can continuously press the tissue in the closed loop, the tissue in the closed loop is ischemic and necrotic, the silk thread is not easy to break, the reliability during use is improved, the magnetic beads have a certain diameter, the wound opened by the magnetic beads will not be reconnected, the external opening is unobstructed, and the fistula is not easy to recur. In addition, the internal opening of the anal fistula can be reliably plugged by arranging the plugging structure, excrement is prevented from entering the fistula, and healing is facilitated.

[0046] It is to be understood that the phrases such as first and second, and the like, can refer to a variety of ordinal relationships to a number of entities or actions and are used merely for the sake of conciseness without necessarily implying any actual relationship or order between such entities or actions. Also, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0047] Finally, it should be noted that the above-mentioned embodiments are merely intended for the purpose of illustration and are not intended to limit the embodiments. Based on the above description, those skilled in the art can make other variations or changes in different forms. It is not necessary or possible to exhaust all the embodiments. The obvious changes or variations derived therefrom are still within the scope of the present application.

Claims

1. A device for treating anal fistula, characterized in that, The utility model relates to a kind of anal fistula magnetic beads, including: Silk thread; Magnetic beads, for spherical structure, the surface of the magnetic beads is plated with nano silver ions, the quantity of the magnetic beads is multiple, multiple the magnetic beads are connected on the silk thread; Blocking structure, fixedly connected in the middle of the silk thread, for blocking the inner mouth of the anal fistula; Wherein, each magnetic bead is respectively equipped with recess, the recess is set along the length direction of the silk thread, the recess in multiple magnetic beads of the side of the blocking structure is equipped with a catheter; Each magnetic bead is respectively equipped with a flow guide hole, the flow guide hole is through the bottom wall of the recess, the catheter is opened with first hole corresponding to the flow guide hole on the magnetic bead;Or, the outer surface of each magnetic bead is respectively equipped with a ring-shaped flow guide groove, the flow guide groove is through the two side walls of the recess, the catheter is opened with second hole corresponding to the flow guide groove on the magnetic bead; The blocking structure is inflatable air bag, the air bag is equipped with inflation valve on one side, the air bag is away from the inflation valve one end and is tapered structure;Or, the blocking structure is biological membrane, the edge of the biological membrane is equipped with hook.

2. The device for treating anal fistulas according to claim 1, characterized in that, The silk thread is titanium wire.

3. The device for treating anal fistulas according to claim 1, characterized in that, The magnetic bead is made of neodymium magnet.

4. The device for treating anal fistulas according to claim 3, characterized in that, The diameter of the magnetic bead is 2mm-3mm.

5. The device for treating anal fistulas according to claim 1, characterized in that, The silk thread is equipped with barb, the barb is evenly distributed along the length direction of the silk thread.

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