Conduit for coprophilous fungus transplantation

Abstract

The invention discloses a coprophilous fungus transplantation catheter, relates to the technical field of medical instruments, and aims to solve the technical problems that in the current transplantation process, large-particle impurities block the catheter, consequently, coprophilous fungus suspension conveying is not smooth, and the smooth proceeding of the transplantation process is seriously influenced. An insertion end used for discharging is integrally formed at one end of the catheter, a connecting end used for being connected with an external infusion device is integrally formed at the other end of the catheter, a circulating part used for conveying flushing fluid to the catheter is fixedly arranged on the outer wall, close to the connecting end, of the catheter, and the catheter is communicated and connected with the circulating part. The catheter is made of the flexible material, and the inserting end and the connecting end are integrally formed, so that flexible operation in the intestinal tract of the human body is facilitated, stability and reliability are ensured when the catheter is connected with an external infusion device, and the liquid leakage risk is reduced. The circulating piece arranged on the guide pipe close to the connecting end can synchronously convey flushing fluid in the coprophilous fungi transplanting process, and has the advantages of flushing residual coprophilous fungi and preventing blockage.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more particularly to a catheter for fecal microbiota transplantation. Background Art

[0002] Fecal Microbiota Transplantation (FMT) refers to the transplantation of functional flora from the feces of healthy people into the gastrointestinal tract of patients to rebuild new intestinal flora in order to treat intestinal and extraintestinal diseases.

[0003] Existing fecal microbiota transplant catheters mostly use conventional medical catheters, which are typically thin. During the preparation process, even after filtration, the fecal microbiota suspension may still contain some fine impurities or larger particles, such as undigested food residue and fiber fragments. These impurities or larger particles can easily accumulate and clog the narrow-diameter catheter, resulting in poor delivery of the fecal microbiota suspension and seriously hindering the smooth progress of the transplant.

[0004] Catheter blockage not only prolongs surgery and increases patient suffering, but can also lead to transplant failure, necessitating reoperation, increasing medical costs and infection risks. Furthermore, to resolve blockage, medical staff may need to repeatedly flush or replace the catheter, further increasing the complexity and uncertainty of the procedure. Therefore, we propose a catheter for fecal microbiota transplantation. Summary of the Invention

[0005] The purpose of the present invention is to provide a catheter for fecal microbiota transplantation to solve the current technical problem that large granular impurities block the catheter during the transplantation process, resulting in poor delivery of fecal microbiota suspension and seriously affecting the smooth progress of the transplantation process.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a fecal microbiota transplantation catheter, comprising a flexible catheter, one end of which is integrally formed with an insertion end for discharging material, and the other end of which is integrally formed with a connection end for connecting to an external infusion device, a flow member for delivering flushing fluid to the catheter fixedly provided on the outer wall of the catheter near the connection end, and the catheter is in communication with the flow member; A plurality of discharge holes are arranged in an array on the outer wall of the side end of the conduit near the insertion end, and a partition plate for dividing the space is fixedly provided inside the conduit, and the partition plate is made of the same material as the conduit; The flow member includes a flushing liquid pipe, one end of which is integrally formed with a communicating docking end, and the docking end is used to connect to a flushing liquid supply device, and one end of the flushing liquid pipe is fixedly provided with a spraying end with multiple spray holes.

[0007] The present invention uses a flexible material for the catheter, and the insertion end and the connection end are integrally formed, which is convenient for flexible operation in the human intestine and ensures stability and reliability when connected to an external infusion device, reducing the risk of leakage. The flow part provided near the connection end of the catheter can synchronously deliver flushing fluid during the fecal microbiota transplantation process, timely flush the fecal microbes remaining inside the catheter, prevent blockage, and ensure the smooth progress of the transplantation process. The partition plate inside the catheter rationally divides the internal space, and during the flushing process, a flushing fluid circulation loop can be formed, while the flushing fluid is injected, the waste liquid containing impurities is recovered, avoiding the accumulation of impurities in the intestine, and improving the flushing efficiency and safety.

[0008] Preferably, the discharge hole and the discharge position of the insertion end are both fixedly provided with a first valve, and each spray hole of the spray end is fixedly provided with a second valve.

[0009] Preferably, a heating element is fixedly provided on the outer wall of the flushing liquid pipe, and the flushing liquid pipe is made of a heat-conducting material.

[0010] Preferably, the heating element comprises a sleeve, a heating chamber is formed inside the sleeve, and a spiral heating wire is wound around the side of the heating chamber close to the flushing liquid pipe.

[0011] Preferably, a spiral blade is fixedly provided on the inner wall of the flushing liquid tube, and a blocking rod for reducing the inner cavity space of the flushing liquid tube is fixedly provided laterally in the middle of the spiral blade.

[0012] Preferably, the dividing plate includes an S-shaped dividing portion, both ends of the dividing portion are integrally formed with connecting portions fixedly connected to the inner wall of the conduit, and the side surfaces of the connecting portions are straight surfaces.

[0013] Preferably, a cleaning hole for plugging into the spraying end is opened on the side of the conduit, and the spraying end and the cleaning hole are connected by hot melt.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adopts a flexible material for the catheter, and the insertion end and the connection end are integrally formed, which is convenient for flexible operation in the human intestine, and ensures stability and reliability when connected to an external infusion device, reducing the risk of leakage. The flow part provided near the connection end of the catheter can synchronously deliver flushing fluid during the fecal microbiota transplantation process, timely flush the fecal microbes remaining inside the catheter, prevent blockage, and ensure the smooth progress of the transplantation process. The partition plate inside the catheter rationally divides the internal space, and during the flushing process, a flushing fluid circulation loop can be formed, while the flushing fluid is injected, the waste liquid containing impurities is recovered, avoiding the accumulation of impurities in the intestine, and improving the flushing efficiency and safety.

[0015] 2. The present invention also uses the discharge hole, the first valve at the discharge position of the insertion end, and the second valve at the spray hole at the spray end to automatically close when not delivering fecal bacteria or flushing fluid, effectively preventing intestinal materials from flowing back into the catheter, avoiding contamination and cross-infection risks, and ensuring patient safety. At the same time, the one-way flow characteristics of the valve also help maintain stable delivery pressure, allowing fecal bacteria and flushing fluid to be smoothly discharged, and the second valve can prevent fecal bacteria from entering the circulation element, further reducing the probability of cross-infection.

[0016] 3. The present invention also utilizes a heating element on the outer wall of the flushing liquid tube to heat the interior of the cannula via an electric heating wire, maintaining a suitable temperature for the flushing liquid during delivery. Fluid at near-body temperature reduces intestinal irritation, improves fluidity, and enhances its ability to remove viscous impurities. The spiral blades and blocking rods on the inner wall of the flushing liquid tube narrow the flow range of the flushing liquid while also enhancing contact with the flushing liquid tube surface, further improving the stable heating effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic cross-sectional view of a local structure of the present invention; Figure 3 It is a schematic diagram of the local structure of the present invention; Figure 4 It is a schematic cross-sectional view of a local structure of the present invention; Figure 5 for Figure 2 A schematic diagram of the structure of part A; Figure 6 for Figure 3 Schematic diagram of the enlarged structure of part B.

[0018] Description of the numbers in the figure: 1. Catheter; 101. Discharge hole; 102. Cleaning hole; 2. Insertion end; 3. Connecting end; 4. First valve; 5. Partition plate; 501. Partitioning part; 502. Connecting part; 6. Flow member; 601. Flushing liquid pipe; 602. Docking end; 603. Spraying end; 604. Spiral blade; 605. Blocking rod; 7. Second valve; 8. Heating element; 801. Sleeve; 802. Heating chamber; 803. Heating wire. DETAILED DESCRIPTION

[0019] like Figures 1 to 6As shown, the present invention relates to a fecal microbiota transplantation catheter, comprising a flexible catheter 1, one end of the catheter 1 is integrally formed with an insertion end 2 for discharging materials, and the other end of the catheter 1 is integrally formed with a connection end 3 for connecting to an external infusion device. A flow piece 6 for conveying flushing fluid to the catheter 1 is fixedly provided on the outer wall of the catheter 1 near the connection end 3, and the catheter 1 is communicated with the flow piece 6; the catheter 1 is made of medical-grade flexible polymer material, has good flexibility and biocompatibility, can pass smoothly in the intestine, and reduce damage to the intestinal mucosa. The flow piece 6 is set to be connected to a flushing fluid supply device, and flushing fluid can be conveyed to the inside of the catheter 1 when blockage occurs.

[0020] A plurality of discharge holes 101 are arranged in an array on the outer wall of the side end of the catheter 1 near the insertion end 2. A dividing plate 5 for dividing the space is fixedly set inside the catheter 1, and the dividing plate 5 is made of the same material as the catheter 1; the design of the dividing plate 5 can divide the catheter 1 into two parts: a flushing chamber and a recovery chamber, forming a flushing liquid circulation loop, injecting flushing liquid while recovering waste liquid containing impurities, avoiding the accumulation of impurities in the intestine, and improving flushing efficiency and safety.

[0021] The circulation part 6 includes a flushing liquid tube 601, one end of which is integrally formed with a communicating docking end 602, and the docking end 602 is used to connect to the flushing liquid supply device. One end of the flushing liquid tube 601 is fixedly provided with a spraying end 603 with multiple spray holes; the porous spraying end 603 can expand the flushing range and improve the flushing effect.

[0022] In an embodiment of the present invention, the discharge hole 101 and the discharge position of the insertion end 2 are fixedly provided with a first valve 4, and each spray hole of the spray end 603 is fixedly provided with a second valve 7; the design of the first valve 4 and the second valve 7 can maintain a closed state under no pressure, preventing the backflow of substances in the intestine from entering the catheter 1, thereby improving the safety of the transplant. The design of the second valve 7 can prevent fecal bacteria or other substances from entering the flushing liquid tube 601, thereby reducing the probability of cross infection.

[0023] In an embodiment of the present invention, a heating element 8 is fixedly provided on the outer wall of the flushing liquid tube 601, and the material of the flushing liquid tube 601 is a heat-conducting material. The heating element 8 includes a sleeve 801, and the interior of the sleeve 801 is configured with a heating chamber 802. The heating chamber 802 is wound with a spiral heating wire 803 near the side of the flushing liquid tube 601; the spiral heating wire 803 can improve the uniformity of the temperature rise on the surface of the flushing liquid tube 601, so that the flushing liquid can be heated when passing through the flushing liquid tube 601, so that the flushing liquid is maintained at a suitable temperature, reducing irritation to the intestines during the flushing process, and also enhancing the ability to remove viscous impurities.

[0024] In an embodiment of the present invention, a spiral leaf 604 is fixedly provided on the inner wall of the flushing liquid tube 601, and a sealing rod 605 is fixedly provided laterally in the middle of the spiral leaf 604 for reducing the inner cavity space of the flushing liquid tube 601; the design of the spiral leaf 604 can increase the range of the flushing liquid contacting the inner surface of the flushing liquid tube 601, thereby improving the uniformity of heating, and the design of the sealing rod 605 can reduce the flow range of the flushing liquid, shorten the contact distance between the flushing liquid and the inner surface of the flushing liquid tube 601, and further improve the heating effect.

[0025] In an embodiment of the present invention, the dividing plate 5 includes an S-shaped dividing portion 501, and both ends of the dividing portion 501 are integrally formed with a connecting portion 502 fixedly connected to the inner wall of the catheter 1, and the side of the connecting portion 502 is a straight surface; the S-shaped dividing portion 501 changes the flow path of the fecal bacteria suspension and the flushing liquid in the catheter 1, so that the fluid changes its flow direction multiple times when passing through the dividing portion 501, and the straight connecting portion 502 can reduce the dead angle range of the connection with the catheter 1, and can maintain a good flushing effect during the flushing process.

[0026] In an embodiment of the present invention, a cleaning hole 102 is opened on the side of the catheter 1 to be plugged into the spraying end 603, and the spraying end 603 and the cleaning hole 102 are hot-melt connected; the design of the cleaning hole 102 can fix the connection position of the spraying end 603, and the hot-melt connection method can enhance the stability of the connection.

[0027] Working principle: This embodiment provides a catheter 1 for fecal microbiota transplantation. When in use, an external infusion device is connected to the connecting end 3 to inject the treated fecal microbiota liquid into the catheter 1. The dividing plate 5 inside the catheter 1, its S-shaped dividing portion 501 and the connecting portion 502 fixedly connected to the inner wall of the catheter 1 at both ends, divide the internal space of the catheter 1, guide the fecal microbiota liquid to flow along a specific path, prevent it from randomly diffusing or forming vortices in the catheter 1, and ensure that the fecal microbiota liquid can be transported to the insertion end 2 in a stable and orderly manner. The insertion end 2 is used to be inserted into the human intestine, and the fecal microbiota liquid is discharged through the insertion end 2 and a number of discharge holes 101 arranged in an array to achieve fecal microbiota transplantation. Both the discharge port 101 and the discharge point of the insertion end 2 are equipped with a first valve 4. When pressure is not applied, the first valve 4 remains closed, preventing intestinal material from flowing back into the catheter 1, ensuring the hygiene and safety of the fecal microbiota transplantation process. When pressure is applied to the fecal microbiota liquid, the first valve 4 opens, allowing the fecal microbiota liquid to be discharged smoothly. The flow member 6 on the outer wall of the catheter 1 near the connection end 3 performs the important function of flushing the catheter 1. The docking end 602 is connected to the flushing liquid supply device, which delivers the flushing liquid into the flushing liquid tube 601. The spiral blades 604 on the inner wall of the flushing liquid tube 601 and the blocking rod 605 in the middle control the flow path of the flushing liquid. The spiral blades 604 increase the contact effect of the flushing liquid with the surface of the flushing liquid tube 601 during flow, and the blocking rod 605 reduces the internal space of the flushing liquid tube 601, reducing the flow rate while also increasing the flow rate of the flushing liquid. These two functions work together to provide the flushing liquid with a stronger cleaning effect. The spray end 603 with multiple spray holes is connected to the catheter 1 through the cleaning hole 102. The second valve 7 at each spray hole of the spray end 603 is closed when there is no flushing liquid pressure, preventing fecal bacteria liquid or other substances in the catheter 1 from entering the flushing liquid tube 601; when there is flushing liquid pressure, the second valve 7 opens, and the flushing liquid is sprayed from the spray hole to fully flush the inside of the catheter 1, removing residual fecal bacteria liquid and other impurities, avoiding blockage and contamination. The heating element 8 on the outer wall of the flushing liquid tube 601 ensures the appropriate temperature of the flushing liquid. In the heating chamber 802 inside the sleeve 801, the spiral heating wire 803 heats up after being energized. Since the flushing liquid tube 601 is made of heat-conducting material, heat can be quickly transferred to the flushing liquid in the flushing liquid tube 601, so that the flushing liquid is maintained at a suitable temperature. On the one hand, flushing liquid with a suitable temperature can avoid irritation to the intestines, and on the other hand, it helps to improve the flushing effect, ensure the quality of cleaning of the catheter 1, and reduce the occurrence of blockage.

[0028] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A fecal microbiota transplantation catheter, characterized in that: The invention comprises a flexible catheter (1), wherein an insertion end (2) for discharging material is integrally formed at one end of the catheter (1), a connection end (3) for connecting to an external infusion device is integrally formed at the other end of the catheter (1), a flow member (6) for conveying a flushing liquid to the catheter (1) is fixedly provided on an outer wall of the catheter (1) near the connection end (3), and the catheter (1) is in communication with the flow member (6); A plurality of discharge holes (101) are arranged in an array on the outer wall of the side end of the conduit (1) near the insertion end (2), and a partition plate (5) for dividing the space is fixedly provided inside the conduit (1), and the partition plate (5) is made of the same material as the conduit (1); The circulation member (6) comprises a flushing liquid pipe (601), one end of which is integrally formed with a communicating butt end (602), and the butt end (602) is used to connect to a flushing liquid supply device, and one end of the flushing liquid pipe (601) is fixedly provided with a spray end (603) having a plurality of spray holes.

2. The fecal microbiota transplantation catheter according to claim 1, characterized in that: The discharge hole (101) and the discharge position of the insertion end (2) are both fixedly provided with a first valve (4), and each spray hole of the spray end (603) is fixedly provided with a second valve (7).

3. The fecal microbiota transplantation catheter according to claim 1, characterized in that: A heating element (8) is fixedly provided on the outer wall of the flushing liquid pipe (601), and the flushing liquid pipe (601) is made of a heat-conducting material.

4. The fecal microbiota transplantation catheter according to claim 3, characterized in that: The heating element (8) comprises a sleeve (801), the interior of the sleeve (801) is provided with a heating chamber (802), and a spiral heating wire (803) is wound around the side of the heating chamber (802) close to the flushing liquid pipe (601).

5. The fecal microbiota transplantation catheter according to claim 1, characterized in that: The inner wall of the flushing liquid tube (601) is fixedly provided with a spiral leaf (604), and the middle part of the spiral leaf (604) is laterally fixedly provided with a blocking rod (605) for reducing the inner cavity space of the flushing liquid tube (601).

6. The fecal microbiota transplantation catheter according to claim 1, characterized in that: The dividing plate (5) comprises an S-shaped dividing portion (501), both ends of the dividing portion (501) are integrally formed with connecting portions (502) fixedly connected to the inner wall of the conduit (1), and the side surfaces of the connecting portions (502) are straight surfaces.

7. The fecal microbiota transplantation catheter according to claim 1, characterized in that: A cleaning hole (102) plugged into the spraying end (603) is provided on the side of the conduit (1), and the spraying end (603) and the cleaning hole (102) are connected by hot melt.

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