Wound surface flushing device of pre-filled flexible porous catheter and flushing method of wound surface flushing device

Abstract

The invention relates to the technical field of medical care instruments, and discloses a wound surface flushing device of a pre-filled flexible porous catheter and a flushing method thereof.The wound surface flushing device of the pre-filled flexible porous catheter comprises a supporting plate, a needle cylinder is fixedly connected to the bottom of the supporting plate, a liquid outlet pipe is fixedly connected to the bottom of the needle cylinder, and the liquid outlet pipe is fixedly connected to the bottom of the needle cylinder; a soft guide pipe is fixedly connected to the bottom of the liquid outlet pipe, a round guide head is fixedly connected to the end, away from the liquid outlet pipe, of the soft guide pipe, side holes are evenly formed in the end, close to the round guide head, of the soft guide pipe, a protection cover is arranged on the outer wall of the end, close to the round guide head, of the soft guide pipe, and a supporting assembly is installed on one side of the supporting plate. The pre-filling type design is adopted for the needle cylinder, the steps of liquid preparation and liquid extraction are omitted, the rounded guide head cannot puncture granulation tissue, impact pain caused by water flow to a wound surface is avoided through the side holes, the soft catheter can go deep into a deep sinus tract or a sneaking cavity which cannot be reached by a traditional instrument, and the situation of accidental injection is effectively avoided through the supporting assembly.

Description

Technical Field

[0001] This invention relates to the field of medical and nursing device technology, specifically to a wound irrigation device and irrigation method for a pre-filled flexible multi-porous catheter. Background Technology

[0002] Wound irrigation is an important procedure in clinical wound care and home wound dressing changes to prevent wound infection, remove purulent secretions, and promote wound healing. In clinical care and home dressing changes for diabetic foot and pressure ulcers, irrigation is currently required for diabetic foot and various wounds with sinus tracts or cavities to promote healing.

[0003] Traditional irrigation devices often use ordinary syringes with rigid straight tubes for irrigation. The irrigation fluid needs to be manually drawn before the irrigation operation, which patients with limited mobility cannot complete independently. During the operation, the irrigation fluid and instruments are easily contaminated, increasing the risk of wound infection. Moreover, the accompanying irrigation catheters are mostly rigid structures, and forced insertion can easily scratch the newly formed granulation tissue and mucosa of the wound, causing secondary damage and pain. At the same time, the concentrated pressure of the outflowing water can easily cause impact damage to the wound. In addition, the irrigation range is limited, making it difficult to thoroughly irrigate the inner wall of the sinus tract and the dead corners of the wound, resulting in residual secretions and poor irrigation effect. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a wound irrigation device and method using a pre-filled flexible multi-porous catheter. This solves the problems of traditional irrigation devices, which often employ ordinary syringes with rigid straight tubes for irrigation. These devices require manual extraction of irrigation fluid before irrigation, making it difficult for patients with limited mobility to perform the irrigation independently. Furthermore, the operation is prone to contamination of the irrigation fluid and instruments, increasing the risk of wound infection. Additionally, the accompanying irrigation catheters are often rigid, and forced insertion can easily scratch newly formed granulation tissue and mucosa, causing secondary damage and pain. The concentrated pressure of the outflowing water can also cause impact damage to the wound, and the limited irrigation range makes it difficult to thoroughly irrigate the sinus tract walls and wound dead spots, resulting in residual secretions and poor irrigation effectiveness.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a wound irrigation device for a pre-filled flexible multi-hole catheter, comprising a support plate, a syringe fixedly connected to the bottom of the support plate, a liquid outlet tube fixedly connected to the bottom of the syringe, a flexible catheter fixedly connected to the bottom of the liquid outlet tube, a rounded guide head fixedly connected to the end of the flexible catheter away from the liquid outlet tube, side holes evenly provided at the end of the flexible catheter near the rounded guide head, a protective cap provided on the outer wall of the end of the flexible catheter near the rounded guide head, and a support assembly installed on one side of the support plate.

[0006] By adopting the above technical solution and using a pre-filled syringe design, the traditional steps of solution preparation and aspiration are eliminated. Patients or their families do not need professional nursing knowledge; they can use it simply by unpacking the package. This greatly lowers the barrier to home care, making wound irrigation and care simpler and easier, especially suitable for self-care in a home environment. The rounded guide tip will not puncture granulation tissue when probing the sinus tract, effectively protecting the wound tissue. Combined with the side-hole fluid outlet design, the liquid flows out in a side spray pattern, avoiding the impact pain caused by high-pressure direct water jets on the bottom of the wound, improving the patient's comfort during irrigation. Moreover, the side water flow can more effectively... It thoroughly and effectively flushes pus and necrotic tissue from the inner walls of sinus tracts, achieving a more thorough debridement effect. The protective cap ensures that the catheter tip in contact with the wound remains absolutely sterile before being unsealed, effectively preventing external bacterial contamination, reducing the risk of wound infection, and providing a good sterile environment for wound healing. The soft catheter is 5-10cm long and made of medical-grade soft material, with good flexibility, and can bend to conform to the shape of the wound. It can reach deep sinus tracts or cavities that traditional instruments cannot reach, achieving thorough debridement in all directions without dead angles, effectively solving the limitations of traditional instruments in rinsing complex wounds.

[0007] Preferably, a piston plate is slidably connected inside the syringe, a push rod is fixedly connected to the top of the piston plate, and a handle is fixedly connected to the top of the push rod.

[0008] Preferably, the support assembly includes a positioning hole, the outer wall of the support plate has a positioning hole, a locking screw is threaded into the positioning hole of the support plate, a support rod is slidably connected inside the support plate, a screw hole is opened at the bottom of the support rod, the outer wall of the locking screw is threaded into the screw hole, and the top of the support rod is located at the bottom of the handle.

[0009] Preferably, the support assembly further includes a fixing plate, the top of the support plate is symmetrically fixedly connected to a fixing plate, one side of the fixing plate is fixedly connected to a mounting plate, the inside of the mounting plate is slidably connected to a limit rod, one end of the two limit rods is fixedly connected to a connecting plate, one side of the connecting plate is symmetrically fixedly connected to a tension spring, one end of the tension spring is respectively fixedly connected to one side of the mounting plate, and the inner wall of the tension spring is fitted onto the outer wall of the limit rod.

[0010] Preferably, the push rod has symmetrically provided limiting holes inside, wherein one end of the limiting rod is slidably connected to the limiting hole.

[0011] Preferably, the outer wall of the syringe is uniformly provided with liquid level lines, and the outer wall of the flexible catheter is uniformly provided with graduation lines.

[0012] Preferably, the outer wall of the flexible conduit is fitted with an installation frame, and both sides of the installation frame are provided with sliding grooves, with a sliding rod slidably connected in the sliding grooves of the installation frame.

[0013] Preferably, one end of the slide bar is fixedly connected to a roller, and the outer wall of the roller is disposed on the top of the flexible conduit.

[0014] Preferably, one of the slide bars has a nut threaded onto its outer wall, with one side of the nut abutting against one side of the mounting frame.

[0015] A wound irrigation method using a pre-filled flexible multi-porous catheter includes the following steps: When using it, first tear open the disposable sterile packaging bag, take out the device, loosen the locking screw to remove the support rod, or pull the connecting plate to make the limiting rod slide out of the limiting hole of the push rod to release the limitation of the push rod; Then remove the protective cap at the end of the flexible tubing, loosen the nut and roll the roller to allow the slide bar to slide in the groove, releasing the squeezing state of the flexible tubing to open the liquid passage, and then tighten the nut to fix the position of the roller. According to the needs of the wound, the user holds the installation frame and slowly inserts the 5-10cm long soft catheter into the sinus tract of the wound with the help of the rounded guide tip. The user judges the length of the soft catheter into the sinus tract by using the scale lines. Then, the push rod is slowly pushed to move the piston plate in the syringe towards the outlet tube. The pre-filled saline in the syringe flows into the soft catheter through the outlet tube and finally flows out from the side hole of the soft catheter. Users can observe the remaining liquid level by referring to the liquid level line on the outer wall of the syringe, and continue to push the plunger to complete the wound irrigation operation. After the irrigation operation is completed, the entire device can be discarded directly as medical waste.

[0016] This invention provides a wound irrigation device and method using a pre-filled flexible multi-porous catheter. It offers the following advantages: 1. This invention utilizes a pre-filled syringe design, eliminating the need for traditional solution preparation and aspiration steps. The rounded guide tip will not puncture granulation tissue when inserted into the sinus tract. The side-hole liquid outlet design allows the liquid to flow out in a side spray pattern, avoiding the impact pain caused by high-pressure direct current water jets on the bottom of the wound. The protective cap ensures that the catheter tip in contact with the wound remains absolutely sterile before being unsealed, effectively preventing external bacterial contamination. The soft catheter has good flexibility and can bend to conform to the shape of the wound, allowing it to penetrate deep sinus tracts or burrowing cavities that traditional instruments cannot reach, achieving thorough debridement in all directions without dead angles, effectively solving the limitations of traditional instruments in rinsing complex wounds.

[0017] 2. When packaging the device according to this invention, the top of the support rod is pressed against the bottom of the handle, and then the locking screw is tightened to fix the support rod and the support plate, thereby achieving stable support for the handle. Alternatively, by pulling the connecting plate, the limiting rod is stretched outward under the action of the tension spring. Then, one end of the limiting rod is aligned with the limiting hole of the push rod, and the connecting plate is released. Under the action of the rebound force of the tension spring, the outer wall of one end of the limiting rod slides into the limiting hole, thereby achieving lateral interception of the push rod. This works in conjunction with the roller structure to form a double insurance, preventing accidental injection or leakage of the medicine during transportation, and ensuring the quality and safety of the product. In use, by pulling the connecting plate, the tension spring is stretched, and the limiting rod slides out from the limiting hole, allowing the handle to be pushed to perform rinsing operations on the wound.

[0018] 3. This invention uses a rolling roller to slide the slide bar within a groove, allowing the roller to completely compress the flexible conduit. This can block or control the flow of liquid. During compression, one side of the nut presses against one side of the mounting frame to prevent liquid leakage due to roller instability. When flow rate needs adjustment, the nut is loosened, and the roller is moved to a suitable position, subjecting the flexible conduit to varying degrees of compression. This alters the size of the liquid passage, thus regulating the flow rate. Finally, the nut is tightened to fix the roller position. This not only facilitates the storage and transportation of the device but also allows for flexible adjustment of the liquid flow rate according to actual needs, meeting the irrigation requirements of different wounds and further enhancing the practicality and flexibility of the device. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial structural diagram of the support plate of the present invention; Figure 3 This is a schematic diagram of a partial structure of the push rod of the present invention; Figure 4 This is a partial structural diagram of the protective cover of the present invention; Figure 5 for Figure 3 Enlarged structural diagram at point A in the middle; Figure 6 This is a partial structural diagram of the syringe of the present invention; Figure 7 This is a partial structural diagram of the liquid level line of the present invention; Figure 8 This is a schematic diagram of a partial structure of the roller of the present invention.

[0020] The components include: 1. Support plate; 2. Syringe; 201. Dispensing tube; 202. Flexible tubing; 203. Rounded guide head; 204. Side hole; 206. Protective cap; 3. Piston plate; 301. Push rod; 302. Handle; 4. Positioning hole; 401. Locking screw; 402. Support rod; 5. Fixing plate; 501. Mounting plate; 502. Limiting rod; 503. Connecting plate; 504. Tension spring; 505. Limiting hole; 6. Liquid level line; 601. Scale line; 8. Mounting frame; 801. Slide groove; 802. Slide rod; 803. Roller; 804. Nut. Detailed Implementation

[0021] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see the appendix Figure 1 -Appendix Figure 4 This invention provides a wound irrigation device for a pre-filled flexible multi-hole catheter, including a support plate 1. A syringe 2 is fixedly connected to the bottom of the support plate 1. An outlet tube 201 is fixedly connected to the bottom of the syringe 2. A flexible catheter 202 is fixedly connected to the bottom of the outlet tube 201. A rounded guide head 203 is fixedly connected to the end of the flexible catheter 202 away from the outlet tube 201. Side holes 204 are evenly opened at the end of the flexible catheter 202 near the rounded guide head 203. A protective cap 206 is provided on the outer wall of the end of the flexible catheter 202 near the rounded guide head 203. A support component is installed on one side of the support plate 1.

[0023] Specifically, the entire device is placed in a disposable sterile packaging bag. The syringe 2 adopts a pre-filled design, which is pre-filled with physiological saline and other rinsing liquids. This eliminates the cumbersome steps of preparing and drawing liquids during traditional wound rinsing. For patients or their families, no professional nursing knowledge is required. The device is ready to use as soon as the packaging is opened, which greatly reduces the threshold of home care and makes wound rinsing care simple and easy to carry out in the home environment. The flexible catheter 202 is 5-10cm long and made of medical-grade soft material. It has good flexibility, allowing it to bend to conform to the shape of the wound. It can reach deep sinus tracts or cavities that traditional instruments cannot reach. The rounded guide tip 203 will not puncture granulation tissue when probing into the sinus tract, effectively protecting the wound tissue. With the liquid discharge design of the side hole 204, the liquid flows out in a side spray, avoiding the impact pain caused by the high-pressure direct water jet to the bottom of the wound, improving the patient's comfort during the irrigation process. Moreover, the side water flow can more comprehensively and effectively flush the pus and necrotic tissue on the inner wall of the sinus tract, achieving a more thorough debridement effect. The protective cap 206 is installed on the outer wall of the end of the flexible catheter 202 near the rounded guide tip 203, ensuring that the catheter tip in contact with the wound remains absolutely sterile before unsealing. During the storage and transportation of the device, the protective cap 206 effectively prevents external bacterial contamination, reduces the risk of wound infection, and provides a good sterile environment for wound healing. With the cooperation of the support components, accidental injection is effectively avoided, ensuring the safety and controllability of the irrigation process.

[0024] Please see the appendix Figure 1 -Appendix Figure 3 Appendix Figure 7 Appendix Figure 8 The syringe 2 has a piston plate 3 that is slidably connected inside. The top of the piston plate 3 is fixedly connected to a push rod 301, and the top of the push rod 301 is fixedly connected to a handle 302. Liquid level lines 6 are evenly distributed on the outer wall of the syringe 2.

[0025] Specifically, when using the device, tear open the sterilized packaging bag, remove the device, remove the support assembly, pull off the protective cover 206, hold the handle 302, push the push rod 301, and make the piston plate 3 slowly slide in the syringe 2 towards the liquid outlet direction. As the piston plate 3 moves, the saline in the syringe 2 is squeezed and flows out from the outlet tube 201, enters the soft catheter 202, and finally flows out from the side hole 204 in a side spray pattern, performing a 360-degree gentle rinsing of the wound cavity, effectively flushing out pus and necrotic tissue. After rinsing, the entire device can be directly discarded as medical waste. The operation is simple and convenient, avoiding the complicated cleaning and disinfection process after the use of traditional instruments. The syringe 2 has liquid level lines 6 evenly distributed on its outer wall. The liquid level lines 6 clearly indicate the liquid volume corresponding to different liquid levels in the syringe 2. During use, the user can intuitively understand the remaining amount of medicine in the syringe 2 by observing the liquid level lines 6, so as to reasonably arrange the rinsing operation and avoid affecting the rinsing effect due to insufficient medicine.

[0026] Please see the appendix Figure 1 Appendix Figure 3 Appendix Figure 5The support assembly includes a positioning hole 4. The outer wall of the support plate 1 has a positioning hole 4. A locking screw 401 is threaded into the positioning hole 4 of the support plate 1. A support rod 402 is slidably connected inside the support plate 1. A screw hole is opened at the bottom of the support rod 402. The outer wall of the locking screw 401 is threaded into the screw hole. The top of the support rod 402 is located at the bottom of the handle 302.

[0027] Specifically, when packaging the device, the top of the support rod 402 is pressed against the bottom of the handle 302, and then the locking screw 401 is tightened to fix the support rod 402 relative to the support plate 1, thereby achieving stable support for the handle 302, effectively avoiding accidental injection, and ensuring the safety and controllability of the rinsing process.

[0028] Please see the appendix Figure 6 In this embodiment, another structure is provided in the above embodiment: the support assembly also includes a fixing plate 5. The top of the support plate 1 is symmetrically fixedly connected to the fixing plate 5. The side of the fixing plate 5 is fixedly connected to the mounting plate 501. The inside of the mounting plate 501 is slidably connected to the limiting rods 502. One end of the two limiting rods 502 is fixedly connected to the connecting plate 503. The side of the connecting plate 503 is symmetrically fixedly connected to the tension springs 504. One end of the tension springs 504 is fixedly connected to one side of the mounting plate 501. The inner wall of the tension springs 504 is fitted onto the outer wall of the limiting rods 502. The push rod 301 has symmetrically provided limit holes 505 inside, and one end of the limit rod 502 is slidably connected to the outer wall of the limit hole 505.

[0029] Specifically, during device packaging, pulling the connecting plate 503 causes the limiting rod 502 to extend outward under the action of the tension spring 504. Then, one end of the limiting rod 502 is aligned with the limiting hole 505 of the push rod 301. The connecting plate 503 is released, and under the rebound force of the tension spring 504, the outer wall of one end of the limiting rod 502 slides into the limiting hole 505, achieving lateral interception of the push rod 301. This, in conjunction with the roller 803 structure, forms a double safety measure to prevent accidental injection or leakage of the medicine during transportation, ensuring the quality and safety of the product. During use, by pulling the connecting plate 503, the tension spring 504 is stretched, and the limiting rod 502 slides out from the limiting hole 505, allowing the handle 302 to be pushed to perform rinsing operations on the wound.

[0030] Please see the appendix Figure 7 Appendix Figure 8 The outer wall of the flexible catheter 202 is uniformly provided with scale lines 601.

[0031] Specifically, according to the needs of the wound, the user holds the installation frame 8 and slowly inserts the soft catheter 202, which is 5-10cm long, into the sinus tract of the wound with the help of the rounded guide head 203. The length of the soft catheter 202 into the sinus tract is judged by the scale line 601, which helps medical staff and patients understand the length of the soft catheter 202 that has penetrated into the sinus tract.

[0032] Please see the appendix Figure 1 -Appendix Figure 3 Appendix Figure 7 Appendix Figure 8 The outer wall of the flexible conduit 202 is equipped with an installation frame 8. Both sides of the installation frame 8 are provided with sliding grooves 801, and a sliding rod 802 is slidably connected in the sliding grooves 801 of the installation frame 8. One end of the slide bar 802 is fixedly connected to a roller 803, and the outer wall of the roller 803 is set on the top of the flexible guide tube 202; One of the slide rods 802 has a nut 804 threadedly connected to its outer wall, with one side of the nut 804 pressing against one side of the mounting frame 8.

[0033] Specifically, during storage and transportation, the sliding rod 802 slides within the groove 801 by rolling the roller 803, causing the roller 803 to completely compress the flexible conduit 202. This can block or control the flow of liquid. When compressed, one side of the nut 804 abuts against one side of the mounting frame 8, preventing liquid leakage due to instability of the roller 803. When flow rate needs to be adjusted, the nut 804 is loosened, and the roller 803 is moved to a suitable position, causing the flexible conduit 202 to be compressed to different degrees, thereby changing the size of the liquid passage and achieving flow rate adjustment. Finally, the nut 804 is tightened to fix the position of the roller 803. This not only facilitates the storage and transportation of the device but also allows for flexible adjustment of the liquid flow rate according to actual needs, meeting the requirements of different wound irrigation, and further enhancing the practicality and flexibility of the device. Apart from the soft catheter 202 and the piston plate 3, other structural components of the device can be made of medical plastics such as polyvinyl chloride (PVC).

[0034] A wound irrigation method using a pre-filled flexible multi-porous catheter includes the following steps: When using, first tear open the disposable sterile packaging bag, take out the device, loosen the locking screw 401 to move the support rod 402, or pull the connecting plate 503 to make the limiting rod 502 slide out of the limiting hole 505 of the push rod 301 to release the limitation on the push rod 301. Then remove the protective cap 206 at the end of the flexible conduit 202, loosen the nut 804 and roll the roller 803 to make the slide bar 802 slide in the slide groove 801, release the squeezing state of the flexible conduit 202 to open the liquid channel, and then tighten the nut 804 to fix the position of the roller 803. According to the needs of the wound, the user holds the installation frame 8 and slowly inserts the soft catheter 202, which is 5-10cm long, into the sinus tract of the wound with the help of the rounded guide head 203. The user judges the length of the soft catheter 202 into the sinus tract by using the scale line 601. Then, the push rod 301 is slowly pushed to drive the piston plate 3 to slide in the syringe 2 toward the outlet tube 201. The pre-filled saline in the syringe 2 flows into the soft catheter 202 through the outlet tube 201 and finally flows out from the side hole 204 of the soft catheter 202. Users can observe the remaining liquid volume by referring to the liquid level line 6 on the outer wall of the syringe 2, and continue to push the push rod 301 to complete the wound irrigation operation. After the irrigation operation is completed, the entire device can be discarded directly as medical waste.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wound irrigation device for a pre-filled flexible multi-porous catheter, comprising a support plate (1), characterized in that: A syringe (2) is fixedly connected to the bottom of the support plate (1). A liquid outlet tube (201) is fixedly connected to the bottom of the syringe (2). A flexible conduit (202) is fixedly connected to the bottom of the liquid outlet tube (201). A rounded guide head (203) is fixedly connected to the end of the flexible conduit (202) away from the liquid outlet tube (201). Side holes (204) are evenly opened at the end of the flexible conduit (202) near the rounded guide head (203). A protective cap (206) is provided on the outer wall of the end of the flexible conduit (202) near the rounded guide head (203). A support assembly is installed on one side of the support plate (1).

2. The wound irrigation device for a pre-filled flexible multi-porous catheter according to claim 1, characterized in that: The syringe (2) has a piston plate (3) slidably connected inside, and a push rod (301) is fixedly connected to the top of the piston plate (3). A handle (302) is fixedly connected to the top of the push rod (301).

3. The wound irrigation device for a pre-filled flexible multi-porous catheter according to claim 1, characterized in that: The support assembly includes a positioning hole (4). The outer wall of the support plate (1) is provided with a positioning hole (4). A locking screw (401) is threaded into the positioning hole (4) of the support plate (1). A support rod (402) is slidably connected inside the support plate (1). A screw hole is provided at the bottom of the support rod (402). The outer wall of the locking screw (401) is threaded into the screw hole. The top of the support rod (402) is located at the bottom of the handle (302).

4. The wound irrigation device for a pre-filled flexible multi-porous catheter according to claim 1, characterized in that: The support assembly also includes a fixing plate (5), which is symmetrically fixedly connected to the top of the support plate (1). A mounting plate (501) is fixedly connected to one side of the fixing plate (5). Limiting rods (502) are slidably connected inside the mounting plate (501). A connecting plate (503) is fixedly connected to one end of the two limiting rods (502). Tension springs (504) are symmetrically fixedly connected to one side of the connecting plate (503). One end of the tension springs (504) is fixedly connected to one side of the mounting plate (501). The inner wall of the tension springs (504) is fitted onto the outer wall of the limiting rods (502).

5. The wound irrigation device for a pre-filled flexible multi-porous catheter according to claim 2, characterized in that: The push rod (301) has symmetrically provided limiting holes (505) inside, wherein one end of the limiting rod (502) is slidably connected to the outer wall of the limiting hole (505).

6. The wound irrigation device for a pre-filled flexible multi-porous catheter according to claim 1, characterized in that: The outer wall of the syringe (2) is uniformly provided with liquid level lines (6), and the outer wall of the soft catheter (202) is uniformly provided with scale lines (601).

7. The wound irrigation device for a pre-filled flexible multi-porous catheter according to claim 1, characterized in that: The outer wall of the flexible conduit (202) is fitted with an installation frame (8), and both sides of the installation frame (8) are provided with sliding grooves (801). A sliding rod (802) is slidably connected in the sliding grooves (801) of the installation frame (8).

8. The wound irrigation device for a pre-filled flexible multi-porous catheter according to claim 7, characterized in that: One end of the slide bar (802) is fixedly connected to a roller (803), and the outer wall of the roller (803) is set on the top of the flexible guide tube (202).

9. The wound irrigation device for a pre-filled flexible multi-porous catheter according to claim 8, characterized in that: One of the slide bars (802) has a nut (804) threaded onto its outer wall, one side of which abuts against one side of the mounting frame (8).

10. A wound irrigation method using a pre-filled flexible multi-porous catheter, characterized in that: A wound irrigation device for a pre-filled flexible multi-porous catheter as described in any one of claims 1-9 includes the following steps: When using, first tear open the disposable sterile packaging bag, take out the device, and then remove the support rod (402) by loosening the locking screw (401). Alternatively, you can pull the connecting plate (503) to make the limiting rod (502) slide out of the limiting hole (505) of the push rod (301) to release the limitation on the push rod (301). Then remove the protective cap (206) at the end of the flexible conduit (202), loosen the nut (804) and roll the roller (803) to make the slide bar (802) slide in the groove (801) to release the squeezing state of the flexible conduit (202) and open the liquid channel. Then tighten the nut (804) to fix the position of the roller (803). According to the needs of the wound, the user holds the installation frame (8) and slowly inserts the soft catheter (202) with a length of 5-10cm into the sinus tract of the wound with the help of the rounded guide (203). The length of the soft catheter (202) into the sinus tract is judged by the help of the scale line (601). Then, the push rod (301) is slowly pushed to drive the piston plate (3) to slide in the syringe (2) toward the outlet tube (201). The pre-filled saline in the syringe (2) flows into the soft catheter (202) through the outlet tube (201) and finally flows out from the side hole (204) of the soft catheter (202). Users can observe the remaining liquid volume by referring to the liquid level line (6) on the outer wall of the syringe (2), and continue to push the push rod (301) to complete the wound irrigation operation. After the irrigation operation is completed, the entire device can be directly discarded as medical waste.

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