An anal fistula postoperative dressing and medicine placing device
By designing a graduated dressing change device for anal fistula surgery, the problem of difficulty in controlling the dressing depth after anal fistula surgery has been solved, achieving precise drug delivery and improving the dressing effect, while reducing the risk of infection and the probability of recurrence.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN YUNZISHAN HEALTH IND DEVELOPMENT CO LTD
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-03
AI Technical Summary
Postoperative dressing changes for anal fistula are difficult to control in terms of depth, leading to untimely or substandard dressing changes, which can easily cause infection and fistula recurrence, especially when performed by non-professionals.
Design a dressing change device for anal fistula surgery that includes a push tube, an outer cylinder, and a front guide tube. The outer cylinder has an injection channel with a first graduation, and the front guide tube has a second graduation. The insertion depth and position of the sterile swab are controlled by rotating the outer cylinder and the push tube to ensure that the medication reaches the wound accurately.
It achieves precise control over the depth of medication, reduces the difficulty and pain of dressing changes, improves the effectiveness of dressing changes, reduces the risk of infection and the possibility of anal fistula recurrence, and shortens the wound healing time.
Smart Images
Figure CN224441905U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of anorectal surgery nursing, and in particular to a dressing change and medication application device after anal fistula surgery. Background Technology
[0002] Anal fistula is a common disease in proctology. In my country, its incidence rate is approximately 1.67%-3.6% of all anorectal diseases, while abroad, the incidence rate is relatively higher, ranging from 8.0% to 25.0%. Once formed, anal fistula generally cannot heal on its own; surgical treatment is the only curative method. Some patients experience poor clinical outcomes and may even develop surgical complications such as anal deformities, severely impacting their quality of life. Therefore, postoperative dressing changes are crucial for promoting wound healing, preventing infection, and reducing complications. Strict adherence to the doctor's instructions and mastery of the correct procedures and frequency are essential.
[0003] The selection of instruments for postoperative dressing changes after anal fistula surgery should focus on "cleaning, drainage, and wound protection." Preparation and use should be carried out under the guidance of a doctor or nurse, especially for patients with complex anal fistulas. Regular follow-up visits are necessary for professional wound assessment to ensure the effectiveness of dressing changes and reduce the risk of recurrence. After discharge, dressing changes at home are mainly performed by local medical institutions, or family members may receive pre-discharge training to ensure timely dressing changes of the perianal and internal anal wounds after bowel movements.
[0004] The core sterile dressing change tools for current anal fistula dressing devices include: (1) a sterile dressing pack containing: sterile forceps and hemostats (2 pairs, one for handling contaminated items and one for handling sterile items to avoid cross-contamination), a sterile kidney dish (for holding sterile cotton balls, drainage strips, etc.), and sterile gauze (different sizes for covering the wound). (2) disposable sterile gloves, which must be worn throughout the process to prevent bacteria from the hands from contaminating the wound. Currently, medical rubber gloves are mostly chosen (powder-free gloves are better to reduce irritation).
[0005] Currently, the key procedure for dressing changes after anal fistula surgery is to insert sterile cotton balls and dressing strips into the anus using sterile equipment. In practice, forceps and hemostats are used in conjunction. However, this procedure requires a high level of skill in placement and depth judgment. It usually requires experienced proctologists to ensure the depth and effectiveness of disinfection and medication placement. Ordinary medical staff and family members who have received basic training often find it difficult to control the depth of medication placement when changing dressings and placing medication inside the anus, which often leads to unreliable results.
[0006] Especially for patients whose residence is far from the hospital where they had surgery after discharge, it is difficult to obtain timely and professional dressing changes after a sitz bath. Furthermore, a significant proportion of anal fistula patients are young and middle-aged adults, whose work schedules after discharge may conflict with their dressing needs in terms of time and location. These factors lead to untimely or substandard dressing changes, particularly difficulties in judging the depth of the dressing, making it difficult for the dressing strip to reach the wound. This can result in prolonged wound healing time, infection, and in severe cases, even recurrence of the anal fistula, requiring the patient to undergo surgery again. Utility Model Content
[0007] The purpose of this invention is to provide a convenient, controllable dressing depth device for postoperative dressing and medication placement in anal fistula surgery, which reduces patient pain.
[0008] To achieve this objective, the present invention adopts the following technical solution:
[0009] A dressing change and medication placement device after anal fistula surgery includes a push tube, an outer cylinder, and a front guide tube. The outer cylinder has a cavity inside to form an injection channel that matches the size of a sterile tampon. One end of the outer cylinder is a rotating end, and the other end is an insertion end. The outer cylinder has an external thread on the side near the insertion end. One end of the front guide tube is a holding end, and the other end has a petal-shaped opening. The front guide tube has an internal thread that matches the external thread. The push tube has a cavity in the middle. One end of the push tube is a pushing end, and the other end is a piston end. The piston end of the push tube is inserted from the rotating end side of the outer cylinder, and the piston end of the push tube is slidably connected to the outer cylinder. In the initial state, the holding end of the front guide tube is threadedly connected to the outer cylinder, and the insertion end of the outer cylinder is housed in the front guide tube. In the working state, by rotating the outer cylinder, the insertion end of the outer cylinder extends out from the petal-shaped opening of the front guide tube.
[0010] In this embodiment, the sterile tampon includes a head end that matches the size of the injection channel and a pull cord that is fixedly connected to the head end.
[0011] In this embodiment, the outer diameter of the piston end of the push tube is larger than the outer diameter of the push end of the push tube, the outer diameter of the piston end of the push tube matches the inner diameter of the outer tube, and the inner diameter of the push tube is smaller than the outer diameter of the sterile tampon head end; the push tube achieves a sliding connection with the outer tube through the piston end.
[0012] In this embodiment, the outer cylinder is provided with a first scale arranged along the axial direction, and the zero mark of the first scale is set at the end of the outer cylinder insertion end.
[0013] In this embodiment, the outer edge of the insertion end of the outer cylinder is a smooth arc.
[0014] In this embodiment, the petal-shaped opening on the front guide tube is semi-circular.
[0015] In this embodiment, the front guide tube is provided with a second scale for determining the depth of insertion of the front guide tube into the anus.
[0016] Due to the above structure, this utility model has the following advantages:
[0017] 1. This device can accurately push a medicated sterile tampon into the body through the anus and can control the depth of insertion. The medication soaked or applied on the sterile tampon can accurately reach the affected area, reducing the difficulty of dressing changes after anal fistula surgery, improving the effect of dressing changes, reducing the healing time of wounds inside the anus, reducing infection, and reducing the loss of medication caused by clamping and scraping when using forceps to hold gauze or sterile tampons directly through the anal sphincter.
[0018] 2. The outer cylinder of this device has a first scale and the front guide tube has a second scale. The insertion depth of the outer cylinder is controlled by the first scale and the insertion depth of the front guide tube is controlled by the second scale, which greatly improves the accuracy of operation, reduces the pain of patients changing dressings, and achieves precise drug delivery.
[0019] 3. The petal-shaped opening of the front guide tube of this device is initially closed, forming a semi-circular structure on the outside. The semi-circular structure can play a guiding role, making it easy to insert the front guide tube into the anus and preventing damage to the human body. The edge of the insertion end of the outer tube is processed into a smooth arc to prevent injury to the human body during operation after the outer tube enters the human body. The front guide tube is always kept in the position of the sphincter muscle during use, which serves to open the sphincter muscle and assist the outer tube to be inserted.
[0020] 4. The device has a reasonable structural design and clear operating steps. The extension and retraction of the outer cylinder are controlled by rotating the front guide tube, and the sterile cotton strip is pushed into the patient's area by the push tube. The whole operation process is simple and easy to understand, which reduces the operation difficulty for ordinary medical staff and family members and helps to ensure the effect of dressing change.
[0021] In summary, this invention has a simple structure and effectively solves the problems of ease and depth of insertion of sterile tampons for anal dressing changes. It also ensures the accurate depth of placement of the sterile tampons after medication application, maximizing the amount of medication retained during placement. Furthermore, this device effectively addresses the difficulties faced by non-proctology medical personnel in changing dressings, ensuring accurate placement depth and reducing medication loss to the wound surface. This reduces the likelihood of wound infection and anal fistula recurrence due to poor operator technique and delayed dressing changes after defecation, and shortens the wound healing period. Attached Figure Description
[0022] Figure 1 This is a structural schematic diagram of the initial state of this utility model.
[0023] Figure 2This is a structural schematic diagram of the depth adjustment state of this utility model.
[0024] Figure 3 This is a schematic diagram of the structure of the sterile tampon of this utility model in the ejection state.
[0025] Figure 4 This is a schematic diagram of the push tube structure of this utility model.
[0026] Figure 5 This is a schematic diagram of the structure of the sterile tampons of this utility model.
[0027] Figure 6 This is a schematic diagram of the structure of the outer tube of this utility model.
[0028] Figure 7 This is a schematic diagram of the front-end guide tube of this utility model.
[0029] In the attached diagram, 1. Push tube; 11. Push end; 12. Piston end; 2. Sterile swab; 21. Head end; 22. Pull cord; 3. Outer tube; 31. Tube body; 32. Rotating end; 33. First graduation; 34. External thread; 35. Insertion end; 4. Front guide tube; 41. Holding end; 42. Petal-shaped opening; 43. Second graduation. Detailed Implementation
[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0031] like Figures 1 to 7 As shown, this utility model provides a dressing change and medication placement device after anal fistula surgery, including a push tube 1, an outer cylinder 3, and a front guide tube 4. The outer cylinder 3 has a cavity inside to form an injection channel. One end of the outer cylinder 3 is a rotating end 32, and the other end is an insertion end 35. A sterile cotton swab 2 is placed in the injection channel and close to the insertion end 35. The outer wall of the outer cylinder 3 has an external thread 34 on the side close to the insertion end 35. One end of the front guide tube 4 is a holding end 41, and the other end has a petal-shaped opening 42. The tube 4 is provided with an internal thread that matches the external thread 34. The middle part of the push tube 1 is provided with a cavity. One end of the push tube 1 is the pushing end 11, and the other end is the piston end 12. The piston end 12 of the push tube 1 is inserted from the rotating end 32 side of the outer cylinder 3, and the piston end 12 of the push tube 1 is slidably connected to the outer cylinder 3. In the initial state, the holding end 41 of the front guide tube 4 is threadedly connected to the outer cylinder 3, and the insertion end 35 of the outer cylinder 3 is housed in the front guide tube 4, so that the petal-shaped opening 42 of the front guide tube 4 is at the front end.
[0032] like Figure 5 As shown, the sterile tampon 2 includes a head end 21 that matches the size of the injection channel and a pull cord 22 that is fixedly connected to the head end 21.
[0033] like Figure 4 As shown, the outer diameter of the piston end 12 of the push tube 1 is larger than the outer diameter of the push end 11 of the push tube 1. The outer diameter of the piston end 12 of the push tube 1 matches the inner diameter of the outer tube 3. The inner diameter of the push tube 1 is smaller than the outer diameter of the head end 21 of the sterile tampon 2 and larger than the outer diameter of the pull string 22. The push tube 1 achieves a sliding connection with the outer tube through the piston end 12. The inner diameter of the push tube 1 facilitates the passage and exit of the pull string 22 of the sterile tampon 2.
[0034] like Figure 6 As shown, the outer cylinder 3 is provided with a first scale 33 along the axial direction to display the axial length of the outer cylinder 3; the first scale 33 takes the end of the insertion end 35 of the outer cylinder 3 as the zero scale; in this way, the operator can clearly and intuitively understand the depth of the outer cylinder 3 inserted into the anus, thereby achieving precise drug delivery; at the same time, the edge of the insertion end 35 of the outer cylinder 3 is processed into a smooth arc to prevent the outer cylinder 3 from causing harm to the human body after insertion.
[0035] like Figure 7 As shown, one end of the front guide tube 4 is a holding end 41, and the other end is provided with a petal-shaped opening 42. The petal-shaped opening 42 is semi-circular. The front guide tube 4 is provided with a second scale 43, which is a reference scale. The second scale 43 is used to determine the depth of the front guide tube 4 inserted into the anus. In the initial state, the petal-shaped opening 42 is closed, and a semi-circular arc is formed on the outside of the petal-shaped opening 42, which facilitates the insertion of the front guide tube 4 into the anus. At the same time, the front guide tube 4 is held in the position of the sphincter to realize the subsequent insertion of the outer tube.
[0036] Furthermore, this device can be configured in various sizes and models to suit different user groups, including children and adults, to ensure optimal performance in different situations.
[0037] The specific operating procedures of this device are as follows:
[0038] In working condition, first rotate the front guide tube 4 to detach it from the outer tube 3. Then, soak or apply medication to the tip 21 of the sterile tampon 2, and install it into the injection channel of the outer tube 3 using tweezers or other sterilized tools. The pull string 22 passes through the inner cavity of the push tube 1, causing the push end 11 of the push tube 1 to extend out. At this time, the tip 21 of the sterile tampon 2 is locked in the injection channel of the outer tube 3. Then rotate the front guide tube 4 to reset the front guide tube 4 on the outer tube 3, so that the insertion end 35 of the outer tube 3 is retracted into the front guide tube 4.
[0039] After completing the above preparations, insert the front guide tube 4 into the anus, so that the holding end 41 of the front guide tube 4 is outside the anus and the petal-shaped opening 42 of the front guide tube 4 is inside the body; then the device enters the depth adjustment state, such as... Figure 2 As shown, at this time, the operator holds the holding end 41 of the front guide tube 4 with one hand and rotates the outer tube 3 with the other hand, so that the insertion end 35 of the outer tube 3 extends out from the petal-shaped opening 42. The operator observes the first scale 33. When the first scale 33 on the outer tube 3 reaches the set value, the device enters the sterile tampon 2 ejection state. At this time, the operator no longer rotates the outer tube 3, but pushes the push tube 1 to slide inside the outer tube 3 through the push end 11, thereby pushing the head end 21 of the sterile tampon 2 out of the injection channel of the outer tube 3 into the body. Finally, after rotating the outer tube to reset, the front guide tube 4 of the device is pulled out from the anus. At this time, the pull string 22 of the sterile tampon 2 is exposed outside the body, which is convenient for subsequent removal.
[0040] The following describes the steps in the actual implementation of this device: (1) Before discharge, the doctor assesses the wound that needs dressing, clearly informing the doctor of the depth of dressing and the dressing device, as well as the types of disinfectant and medication to be applied. (2) Prepare all the necessary sterile dressing devices. (3) Operate this device to disinfect and dress the wound inside and outside the anus.
[0041] The detailed implementation process is as follows:
[0042] Step 1: Before discharge, the doctor will assess the wound that needs dressing changes, clearly informing the patient of the depth of the dressing change, the dressing device, and the types of disinfectant and medication to be applied.
[0043] Step 2: After determining the condition of the wounds outside and inside the anus, select the appropriate model of this device according to the wound condition. For external anal wound dressing packs, select a general sterile dressing pack.
[0044] Step 3: Determine the depth of the dressing change device inside the anus. In this embodiment, the device is used for anal diameters of 1-3 cm and the depth of the wound inside the anus ranges from 3 cm for low-level anal fistulas to 10 cm for high-level anal fistulas.
[0045] Step 4: Wear sterile gloves, take out the device, rotate the front guide tube to separate the front guide tube 4 from the outer cylinder 3, then place the sterile cotton swab 2 after soaking or applying the medicine into the injection channel of the outer cylinder 3, and then rotate the front guide tube back to its original position.
[0046] Step 5: The operator uses one hand to hold the skin around the anus and the other hand to operate the device. The semi-circular petal-shaped opening 42 of the front guide tube is brought close to the anus and slowly pushed in until the second mark 43 of the front guide tube is just placed at the insertion point of the anus.
[0047] Step 6: Then, the operator holds the front guide tube end 41 still with one hand and rotates the outer cylinder 3 with the other hand. Using the threaded structure, the insertion end 35 of the outer cylinder 3 extends out from the petal-shaped opening 42. The operator observes the first scale 33. When the first scale 33 on the outer cylinder 3 reaches the set value, it means that the insertion end 35 of the outer cylinder 3 has reached the set depth for entering the body.
[0048] Step 7: Push the sterile tampon 2 containing the medication into the anus by pushing the push tube 1, then rotate the outer tube to reset it, and then gently pull out the front guide tube 4, leaving only the sterile tampon 2 containing the medication in the body.
[0049] Step 8: Control the time the sterile tampon 2 containing the medication is placed inside the body according to the needs, so that the disinfectant solution can fully contact the wound inside the anus.
[0050] Step 9: Gently pull the sterile tampon 2 out of the anus through the pull string 22 at the end of the medicated sterile tampon 2 and discard it. This completes one disinfection process for the anus.
[0051] Step 10: Repeat steps 4-9 above until the required number of disinfection cycles are completed.
[0052] Step 11: Apply the desired medication to sterile tampon 2, and repeat steps 4-7 to complete the placement of the medicated sterile tampon 2 into the anus.
[0053] Step 11: Control the placement time of the sterile tampon 2 containing the medication according to the needs. Before the next bowel movement or medication change, remove and discard the sterile tampon 2 using step 9 to complete the medication placement process.
[0054] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. An anal fistula post-operation dressing and medicine releasing device, characterized in that, The device includes a push tube, an outer cylinder, and a front guide tube. The outer cylinder has a cavity inside to form an injection channel that matches the size of the sterile tampon. One end of the outer cylinder is a rotating end, and the other end is an insertion end. The outer cylinder has an external thread on the side near the insertion end. One end of the front guide tube is a holding end, and the other end has a petal-shaped opening. The front guide tube has an internal thread that matches the external thread. The push tube has a cavity in the middle. One end of the push tube is a pushing end, and the other end is a piston end. The piston end of the push tube is inserted from the rotating end side of the outer cylinder, and the piston end of the push tube is slidably connected to the outer cylinder. In the initial state, the holding end of the front guide tube is threadedly connected to the outer cylinder, and the insertion end of the outer cylinder is housed in the front guide tube. In the working state, by rotating the outer cylinder, the insertion end of the outer cylinder extends out from the petal-shaped opening of the front guide tube.
2. The post-anal fistula surgery dressing and medicating device according to claim 1, characterized in that, The sterile tampon includes a tip that matches the size of the injection channel and a pull cord that is fixedly connected to the tip.
3. The post-anal fistula surgery dressing and medicating device, according to claim 2, wherein, The outer diameter of the piston end of the push tube is larger than the outer diameter of the push end of the push tube. The outer diameter of the piston end of the push tube matches the inner diameter of the outer tube. The inner diameter of the push tube is smaller than the outer diameter of the sterile tampon head end. The push tube achieves a sliding connection with the outer tube through the piston end.
4. The postoperative dressing and medication placement device for anal fistula as described in claim 1, characterized in that, The outer cylinder is provided with a first scale arranged along the axial direction; the zero mark of the first scale is set at the end of the outer cylinder insertion end.
5. The post-anal fistula surgery dressing and medicating device, according to claim 4, wherein, The outer edge of the insertion end of the outer cylinder is a smooth arc.
6. The post-anal fistula surgery dressing and medicament releasing device according to claim 4, characterized in that, The front guide tube has a second graduation for determining the depth of insertion of the front guide tube into the anus.
7. The post-anal fistula surgery dressing and medicating device, as recited in claim 1, characterized in that, The petal-shaped opening on the front guide tube is semi-circular.