Rectum and vaginal fistula repairing device
By designing a rectal vaginal fistula repair device including an inner cannula, an outer cannula and an outer sheath, the fistula opening is sealed by mutual suction and fusion of the elastic metal mesh and elastic metal sheet, and the flushing fluid is injected through the gap, the problem of inability to effectively seal and flush drainage in the prior art is solved, effective fistula closing and healing is achieved, and the repair success rate is improved.
Patent Information
- Application Number
- CN202421495291.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The existing flushing and drainage devices for rectal and vaginal fistula repair are mostly negative pressure suction solutions, which cannot effectively seal the fistula, resulting in a large amount of dirt passing through the vagina during flushing and drainage, increasing the risk of infection and reducing the repair success rate.
A rectal vaginal fistula repair device including an inner cannula, an outer cannula and an outer sheath is designed. The fistula opening is sealed by mutual suction and fusion of the elastic metal mesh and the elastic metal sheet, and the flushing fluid is injected through the gap between the inner cannula and the outer cannula to achieve effective sealing and flushing and drainage of the fistula opening.
It effectively blocks the rectal vaginal fistula, prevents rectal dirt from flowing into the vagina, reduces inflammation, promotes fistula healing, and improves the success rate of repair.
Smart Images
Figure CN222983092U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to a rectovaginal fistula repair device capable of realizing positive pressure flushing. Background Technique
[0002] Rectovaginal fistula (RVF) is a congenital or acquired passage between the rectum and the vagina, two independent natural cavities. Its main causes are birth canal injury, rectal injury, rectal cancer, perianal abscess, etc. The main clinical manifestations are vaginal flatulence and defecation. In severe cases, feces cannot be controlled. Rectovaginal fistula cannot heal itself and usually requires surgical intervention. The surgery mainly includes fistula resection and fistula orifice repair. Flushing and drainage before and after surgery are very important, which can reduce local infection, reduce tissue edema, and promote tissue healing.
[0003] Most of the existing flushing and drainage devices for rectovaginal fistula repair adopt a negative pressure suction scheme. Although it can solve the problems of infection around the fistula orifice, drainage of intestinal dirt and pus, it does not block the fistula orifice. When the fistula orifice is large, if flushing and drainage are carried out without blocking, a large amount of intestinal contents will still pass through the vagina, causing the infection to continue to worsen and leading to the failure of fistula orifice repair. Summary of the Invention
[0004] The purpose of the utility model is to provide a rectovaginal fistula repair device aiming at the defects of the prior art.
[0005] To achieve the above purpose, the utility model can adopt the following technical solutions:
[0006] The rectovaginal fistula repair device of the utility model includes an inner sleeve and an outer sleeve which are sleeved with a gap; one end of the inner sleeve is provided with a plugging ball, and the inner sleeve near the plugging ball is provided with a first suction hole and an elastic metal grid with a flexible film; an outer sheath is sleeved on the outer sleeve, one end of the outer sleeve is evenly distributed with a plurality of elastic metal sheets in a divergent shape, a magnetic attraction layer for sucking and fixing the elastic metal grid is arranged on the elastic metal sheet, a circular airbag and a second suction hole are arranged on the outer sleeve near the elastic metal sheet, an air charging pipe for injecting air into the circular airbag is penetrated through the wall of the outer sleeve, and a liquid injection pipe for injecting liquid into the gap between the inner sleeve and the outer sleeve.
[0007] Specifically, the length of the inner sleeve is greater than that of the outer sleeve, and the length of the outer sheath is less than that of the outer sleeve; the diameter of the plugging ball is greater than the diameter of the perforation on the inner sleeve where the elastic metal grid is sleeved; there are a plurality of the first suction holes, which are evenly spaced along the length direction of the inner sleeve, and the elastic metal grid is sleeved on the inner sleeve between the first suction holes and the plugging ball; there are a plurality of the second suction holes, which are evenly spaced along the length direction of the outer sleeve, and the circular airbag is arranged on the outer sleeve between the second suction holes and the elastic metal sheet.
[0008] Furthermore, a sealing ring platform is provided on the inner wall of the outer sleeve away from the end of the elastic metal sheet. An internal thread is provided on the sealing ring platform. An external thread adapted to be screwed with the internal thread is provided on the outer wall of the inner sleeve away from the end of the plugging ball. Thus, the gap between the inner sleeve and the outer sleeve is plugged by the fitting and screwing of the internal thread and the external thread. When injecting liquid into the gap through the liquid injection tube, the liquid will be sucked as much as possible by the inner sleeve, preventing the liquid from flowing out of the body through the gap.
[0009] The advantages of the present utility model are that through the combined use of the inner sleeve, the outer sleeve and the outer sheath, it can be easily fixed in the fistula opening of the rectovaginal fistula. At the same time, the fistula opening is plugged by the mutual attraction of the elastic metal wire frame and the elastic metal sheet, so as to facilitate flushing and drainage on the vaginal side of the fistula opening, suck away the dirt and pus in the vagina, reduce inflammation, prevent the dirt in the rectum from flowing into the vagina, promote the growth of tissues at the fistula opening, effectively solve the infection problem on the vaginal side of the fistula opening, and improve the repair success rate of the rectovaginal fistula. Description of the Drawings
[0010] Figure 1 is the structural schematic diagram of the present utility model.
[0011] Figure 2 is Figure 1 the enlarged view of part A in
[0012] Figure 3 is Figure 1 the enlarged view of part B in
[0013] Figure 4 is the reference diagram of the use state of the present utility model.
[0014] Figure 5 is Figure 4 the enlarged view of part C in Detailed Embodiments
[0015] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0016] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.
[0017] In the present utility model, descriptions such as "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature.
[0018] As Figure 1 , 2 As shown, the rectovaginal fistula repair device of the present utility model includes an inner sleeve 1 and an outer sleeve 2 which are sleeved in a clearance fit; a plugging ball 3 for plugging the inner lumen is provided at the front end of the inner sleeve 1, a first suction hole 4 and an elastic metal grid 6 with a flexible film 5 are provided on the inner sleeve 1 near the plugging ball 3; an outer sheath 7 is sleeved on the outer sleeve 2, the outer sheath 7 can slide back and forth along the length direction of the outer sleeve 2, a plurality of elastic metal sheets 8 are circumferentially provided at the front end opening of the outer sleeve 2, the elastic metal sheets 8 are arranged in a divergent shape, and a magnetic attraction layer 9 for sucking and fixing the elastic metal grid 6 is provided on the elastic metal sheets 8, and the magnetic attraction layer 9 is located on the front side of the elastic metal sheets 8 (i.e., the side facing away from the outer sleeve 2); an annular airbag 10 and a second suction hole 11 are provided on the outer sleeve 2 near the elastic metal sheets 8; in addition, an air charging pipe 12 and a liquid injection pipe 13 are also penetrated through the pipe wall of the outer sleeve 2, the air charging pipe 12 penetrates into the outer sleeve 2 from the rear end of the pipe wall, and its air outlet end is communicated with the annular airbag 10, so as to realize the charging and discharging of the annular airbag 10 through the air charging pipe 12, the liquid injection pipe 13 penetrates into the outer sleeve 2 from the rear end of the pipe wall, and its liquid outlet end is located on the inner wall of the outer sleeve 2, so as to inject a flushing liquid into the gap between the inner sleeve 1 and the outer sleeve 2 through the liquid injection pipe 13.
[0019] Specifically, the inner sleeve 1, the outer sleeve 2 and the outer sheath 7 are all pipe bodies with a certain flexibility. The outer diameter of the inner sleeve 1 is 1 - 3 mm, and the outer diameter of the outer sleeve 2 is 5 - 20 mm. Thus, when the inner sleeve 1 passes through the outer sleeve 2, a gap can be formed between the two; at the same time, the length of the inner sleeve 1 should be greater than that of the outer sleeve 2, so that the inner sleeve 1 can penetrate from the front end of the outer sleeve 2 to the rear end, and the length of the outer sheath 7 is less than that of the outer sleeve 2, so that the outer sheath 7 can slide forward on the outer sleeve 2 to compress and tighten the elastic metal sheets 8, or slide backward to release the elastic metal sheets 8.
[0020] A perforation 14 is provided at the center of the elastic metal grid 6, and the diameter of the perforation 14 should be consistent with the outer diameter of the inner sleeve 1. Thus, the elastic metal grid 6 can be stably sleeved on the inner sleeve 1 through the perforation 14, and the elastic metal grid 6 can also be easily disassembled from the inner sleeve 1; in addition, the diameter of the plugging ball 3 should be greater than the diameter of the perforation 14 at the center of the elastic metal grid 6, so as to block the elastic metal grid 6 through the plugging ball 3 and prevent the elastic metal grid 6 from being removed from the front end of the inner sleeve 1.
[0021] Furthermore, there are multiple first suction holes 4, which are evenly spaced along the length direction of the inner sleeve 1. At this time, the elastic metal wire frame 6 should be sleeved on the inner sleeve 1 between the plugging ball 3 and the foremost first suction hole 4. Meanwhile, there are also multiple second suction holes 11, which are evenly spaced in a spiral shape along the length direction of the outer sleeve 2. At this time, the annular airbag 10 should be located on the outer sleeve 2 between the elastic metal sheet 8 and the foremost second suction hole 11.
[0022] In addition, as Figure 3 shown, a sealing ring platform 15 is also provided at the rear end of the inner wall of the outer sleeve 2 (i.e., the end far from the elastic metal sheet 8), and an internal thread 16 is provided on the sealing ring platform 15. Meanwhile, an external thread 17 adapted to be screwed with the internal thread 16 is also provided at the rear end of the outer wall of the inner sleeve 1 (i.e., the end far from the plugging ball 3). At this time, the liquid outlet end of the liquid injection pipe 13 is located on the inner wall of the outer sleeve 2 in front of the sealing ring platform 15, so that the gap at the rear end between the inner sleeve 1 and the outer sleeve 2 can be blocked by the screw connection of the internal thread 16 and the external thread 17. When flushing liquid is injected into the gap through the liquid injection pipe 13, the flushing liquid will not flow out from the rear end of the gap, enabling the liquid to be sucked as much as possible by the first suction holes 4 on the inner sleeve 1.
[0023] During use, as Figure 4 、 5 described, first, the elastic metal wire frame 6 is sleeved on the rear end of the inner sleeve 1, and the elastic metal wire frame 6 is moved to closely adhere to the plugging ball 3, ensuring that the flexible coating film 5 on the elastic metal wire frame 6 is on the same side as the plugging ball 3. Then, the rear end of the inner sleeve 1 is inserted into the rectum 200 through the patient's anus 600, passes through the fistula opening 100, and exits from the side of the patient's vagina 300, so that the elastic metal wire frame 6 and the plugging ball 3 are blocked on the rectum 200 side of the fistula opening 100. After that, the outer sheath 7 is sleeved on the outer sleeve 2, so that the outer sheath 7 compresses and tightens the elastic metal sheet 8, and the outer sleeve 2 and the outer sheath 7 are sleeved on the rear end of the inner sleeve 1 together and pushed forward, so that the outer sleeve 2 and the outer sheath 7 extend into the patient's vagina 300. When the front end of the outer sleeve 2 reaches the vagina 300 side of the fistula opening 100, the outer sheath 7 is slid downward to open the elastic metal sheet 8. At this time, the elastic metal sheet 8 can be attracted to the elastic metal wire frame 6, thus forming a plugging of the fistula opening 100 to prevent the dirt in the rectum 200 from flowing into the vagina 300 through the fistula opening 100. After the elastic metal sheet 8 is attracted and fixed to the elastic metal wire frame 6, the annular airbag 10 can also be inflated through the air charging pipe 12, so as to support in the vagina 300 near the fistula opening 100, further improving the attraction and fixing effect between the elastic metal sheet 8 and the elastic metal wire frame 6. After that, the outer sheath 7 can be removed, and the inner sleeve 1 and the outer sleeve 2 can be left in the patient's vagina 300 for up to one month.
[0024] During the period when the inner sleeve 1 and the outer sleeve 2 are retained in the patient's vagina 300, since the annular airbag 10 is blocked near the upper part of the bladder 400, it will not affect the urination of the urethral orifice 500. Additionally, during the retention period, the flushing liquid can be injected at any time through the liquid injection tube 13, and at the same time, the inner sleeve 1 is connected to a suction pump for continuous suction. The flushing liquid will flow in the gap between the inner sleeve 1 and the outer sleeve 2 and be sucked into the inner sleeve 1 through the first suction hole 4, and then discharged by the suction pump. During the continuous liquid injection and suction process, the dirt and pus in the vagina 300 outside the outer sleeve 2 will be sucked into the inner sleeve 1 through the second suction hole 11 and taken away by the flushing liquid together, thereby making the vagina 300 cleaner, reducing inflammation, promoting the growth of granulation tissue around the fistula opening 100, and causing the fistula opening 100 to contract.
[0025] When the fistula opening 100 shows a growth and contraction phenomenon after being cleaned for a period of time, the outer sheath 7 can be put on again from the rear end of the outer sleeve 2 and pushed continuously towards the front end of the outer sleeve 2, so that the elastic metal sheet 8 contracts again in the outer sheath 7. Then, the outer sheath 7 and the outer sleeve 2 can be withdrawn simultaneously. After the outer sheath 7 and the outer sleeve 2 are withdrawn from the patient's body, the inner sleeve 1 continues to suck for a period of time. After that, the occlusion ball 3 can be pinched on the rectal 200 side, and the inner sleeve 1 together with the elastic metal wire frame 6 can be taken out from the anus. After the inner sleeve 1 is pulled out, due to the resilience of the tissue, the fistula opening 100 can be further narrowed or even closed, effectively solving the infection problem on the vaginal 300 side of the fistula opening 100 and improving the repair success rate of rectovaginal fistula.
Claims
1. A rectovaginal fistula repair device, characterized in that: It comprises an inner sleeve and an outer sleeve which are fitted in the gap; a sealing ball is arranged at one end of the inner sleeve, and a first suction hole and an elastic metal grid with a flexible coating are arranged on the inner sleeve near the sealing ball; an outer sheath is fitted on the outer sleeve, and a plurality of elastic metal sheets are evenly distributed in a divergent shape at one end of the outer sleeve, a magnetic attraction layer for fixing the elastic metal grid is arranged on the elastic metal sheet, an annular airbag and a second suction hole are arranged on the outer sleeve near the elastic metal sheet, an inflation tube for injecting air into the annular airbag, and an injection tube for injecting liquid into the gap between the inner sleeve and the outer sleeve are penetrated through the wall of the outer sleeve.
2. The rectovaginal fistula repair device according to claim 1, characterized in that: The inner sleeve is longer than the outer sleeve, and the outer sheath is shorter than the outer sleeve.
3. The rectovaginal fistula repair device according to claim 1, characterized in that: The diameter of the blocking ball is larger than the diameter of the hole through which the elastic metal grid is sleeved on the inner sleeve.
4. The rectovaginal fistula repair device according to claim 1, characterized in that: There are a plurality of first suction holes which are evenly spaced along the length direction of the inner sleeve, and the elastic metal grid is sleeved on the inner sleeve between the first suction holes and the blocking balls.
5. The rectovaginal fistula repair device according to claim 1, characterized in that: There are a plurality of second suction holes which are evenly spaced along the length direction of the outer sleeve, and the annular airbag is located on the outer sleeve between the second suction holes and the elastic metal sheet.
6. The rectovaginal fistula repair device according to claim 1, characterized in that: A sealing ring platform is arranged on the inner wall of the outer sleeve away from the elastic metal sheet end, and an internal thread is arranged on the sealing ring platform. An external thread is arranged on the outer wall of the inner sleeve away from the sealing ball end and is threadedly connected with the internal thread.