Anal fistula tightening and cutting device
By designing an anal fistula cutter, the problems of standardization of anal fistula treatment and reliance on experience in the existing technology are solved, standardization of anal fistula treatment and reduction of recurrence risk are achieved, and the application scope of the hanging thread therapy is expanded.
Patent Information
- Application Number
- CN202422296139.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-09-20
AI Technical Summary
The existing technology lacks standardized medical devices to support hanging thread therapy, resulting in unstable treatment effects for anal fistulas, easy recurrence, and the operation is dependent on experience, making it difficult to be widely used.
An anal fistula cutting device is designed, which includes a guide needle, a needle cap, a guide wire, an elastic ring and a tail wire. Through standardized structure and standardized operation, accurate cutting of anal fistula tissue can be achieved. The guide needle is used to guide the elastic ring to the anal fistula position, and the cutting force is controlled by a scale.
It has achieved standardization of anal fistula treatment and normalized operation, improved treatment effect, reduced the risk of recurrence, and expanded the application scope of thread hanging therapy.
Smart Images
Figure CN223380603U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to an anal fistula strangulation device. Background Art
[0002] Anal fistulas, especially high-positioned fistulas, are among the most difficult anorectal diseases. Due to their high location, the complex and tortuous tracts often contain tributaries and deep dead spaces, making treatment challenging. Inappropriate surgical techniques, such as intraoperative severance of the anorectal ligament and anorectal ring, can lead to anal anterior displacement, anal incontinence, and anorectal malformations. If these procedures are not performed and bridge or tube curettage is used instead, recurrences often occur due to poor drainage or incomplete removal of the lesion, and can even lead to persistent and painful anal rashes. The thread-setting technique in Traditional Chinese Medicine (TCM) surgery offers an ingenious solution to this problem. The primary purpose of thread-setting is to utilize the constricting force of an elastic loop to induce chronic mechanical necrosis of the sphincter tissue, resulting in a healing effect while the incision is being made. While thread-setting therapy has been used clinically for many years, its instruments rely solely on experience and understanding, and there is a lack of convenient, standardized medical devices to facilitate its widespread application. Utility Model Content
[0003] In response to the shortcomings of the above-mentioned existing production technology, this application provides an anal fistula cutter that can easily and quickly cut anal fistula tissue, so that traditional Chinese medicine therapies with good efficacy can be widely used through standardized medical equipment and usage methods, benefiting mankind.
[0004] The technical solutions adopted in this utility model are as follows:
[0005] An anal fistula cutting device comprises an introducer needle, the introducer needle head is sleeved with a needle cap, one end of a lead wire is fixedly connected to the needle cap, the other end of the lead wire is fixedly connected to an elastic ring, and the elastic ring is fixedly connected to a tail wire.
[0006] Furthermore, the guide needle is made of stainless steel or plastic material, and is a slender rod structure.
[0007] Furthermore, length scale values are set on the surface of the guide needle along the length direction.
[0008] Furthermore, a sleeve joint is axially arranged at one end of the guide needle, and a sleeve hole is axially arranged at one end of the needle cap. The sleeve joint of the guide needle is clamped in the sleeve hole of the needle cap, and the sleeve hole and the sleeve joint are interference fit.
[0009] Furthermore, a radially penetrating lead wire mounting hole is provided on the needle cap, and one end of the lead wire is passed through and fixed in the lead wire mounting hole.
[0010] Furthermore, the elastic ring is made of rubber or silicone, and the cross section of the elastic ring can be square, rectangular, circular or oval.
[0011] Furthermore, the fixed position of the lead wire on the elastic ring and the fixed position of the tail wire on the elastic ring are respectively located at two ends of the diameter line segment of the elastic ring.
[0012] Furthermore, a circular first sleeve ring is provided at one end of the lead wire connected to the elastic ring, and the first sleeve ring is tightly connected to the elastic ring. A circular second sleeve ring is provided at one end of the tail wire connected to the elastic ring, and the second sleeve ring is tightly connected to the elastic ring.
[0013] The beneficial effects of the utility model are as follows:
[0014] The utility model has a compact and reasonable structure and can cut anal fistula tissue conveniently and quickly. The utility model breaks away from the limitation of relying on experience through the standardization and normalization of the anal fistula cutting device and the standardization of its use operation, thus creating conditions for its wide promotion and application, and has great social and economic value. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a structural diagram of the utility model.
[0016] Figure 2 This is the assembly relationship diagram of the needle cap and guide needle of the present utility model.
[0017] Figure 3 This is a structural diagram of the needle cap of the present utility model.
[0018] Figure 4 This is a needle guide structure diagram of the present utility model.
[0019] Among them: 1. Lead needle; 2. Needle cap; 3. Elastic ring; 4. Lead wire; 5. Tail wire; 6. Socket hole; 7. Socket joint; 8. First socket ring; 9. Second socket ring; 10. Lead wire mounting hole. DETAILED DESCRIPTION
[0020] The specific implementation of the present utility model will be described below with reference to the accompanying drawings.
[0021] like Figure 1 As shown, an anal fistula cutting device includes a guide needle 1, the head of the guide needle 1 is connected to a needle cap 2, one end of a guide wire 4 is fixedly connected to the needle cap 2, the other end of the guide wire 4 is fixedly connected to an elastic ring 3, and the elastic ring 3 is also fixedly connected to a tail wire 5.
[0022] like Figure 4 As shown, the guide needle 1 is made of stainless steel or plastic material. The guide needle 1 is a slender rod structure. The guide needle 1 can carry the guide wire 4 from the skin external fistula opening into the fistula tract to the rectal internal fistula opening.
[0023] like Figure 4As shown, the guide needle 1 has a length scale along its surface. This scale allows the deformation length of the elastic ring 3 to be measured during tightening, thereby controlling the tightening tightness and achieving the desired cutting effect. The diameter of the guide needle 1 is 1-2 mm and the length is approximately 18 cm.
[0024] like Figure 2 、 Figure 3 and Figure 4 As shown, a sleeve joint 7 is provided axially at one end of the guide needle 1, and a sleeve hole 6 is provided axially at one end of the needle cap 2. The sleeve joint 7 of the guide needle 1 is snap-fitted into the sleeve hole 6 of the needle cap 2, and the sleeve hole 6 and the sleeve joint 7 form an interference fit. During use, the guide wire 4 is fixedly connected to the needle cap 2, and the needle cap 2 is sleeved with the guide needle 1. The operator can separate the guide needle 1 and the needle cap 2 with a single finger, solving the difficulty of turning the fistula guide wire. The surgeon performing the rectal procedure can easily and conveniently obtain the needle cap 2 with the guide wire 4 fixedly connected with a single finger, which is important and critical for the standardized operation of this procedure.
[0025] like Figure 2 and Figure 3 As shown, a radially through lead wire mounting hole 10 is provided on the needle cap 2, and one end of the lead wire 4 is passed through and fixed in the lead wire mounting hole 10. The fixed end of the lead wire 4 is knotted to form a knot head, and the diameter of the knot head is larger than the diameter of the lead wire mounting hole 10, thereby preventing the fixed end of the lead wire 4 from falling out of the lead wire mounting hole 10.
[0026] like Figure 1 As shown, the elastic ring 3 is made of rubber or silicone with good biocompatibility. Its cross section can be square, rectangular, circular or oval, and its diameter is usually in the range of 1 to 4 mm. After deformation, it can provide the required cutting force and cutting time for the operation.
[0027] like Figure 1 As shown, a circular first sleeve ring 8 is provided at one end of the lead wire 4 connected to the elastic ring 3 , and the first sleeve ring 8 is tightly connected to the elastic ring 3 .
[0028] like Figure 1 As shown, a circular second sleeve ring 9 is provided at one end of the tail line 5 connected to the elastic ring 3 , and the second sleeve ring 9 is tightly connected to the elastic ring 3 .
[0029] like Figure 1 As shown, the fixed positions of the lead wire 4 and the tail wire 5 on the elastic ring 3 are respectively located at the two ends of the diameter segment of the elastic ring 3. The lead wire 4 and the tail wire 5 cooperate with each other to perform the clamping operation of the elastic ring 3.
[0030] like Figure 1 As shown, the lead wire 4 and the tail wire 5 are both made of medical suture thread.
[0031] The present invention is used as follows: Preoperative preparation is routine. The external opening of the perianal fistula is exposed. The present invention is then placed in the perianal fistula opening. The guide needle 1 is inserted into the fistula opening and slowly advanced along the fistula tract with minimal resistance toward the rectum. After exiting the internal opening of the fistula tract, the needle cap 2 is separated from the guide needle 1, the anus is withdrawn, the guide needle 1 is removed, the guide wire 4 is pulled until the elastic ring 3 reaches the constriction position, and the guide wire 4 and the tail wire 5 are pulled together to tighten the ends of the elastic ring 3 (the guide wire 4 fixing point and the tail wire 5 fixing point). The base of the excess section of the elastic ring 3 is clamped with hemostats for temporary fixation. The compression force of the constriction section of the spring ring 3 is measured using a spring dynamometer or an electronic dynamometer. The length of the excess section of the elastic ring 3 is adjusted as needed. Once the compression force reaches the desired level, the base of the excess section of the elastic ring 3 is then tied and secured with the guide wire 4 or tail wire 5. The length scale on the guide needle 1 can be used to measure changes in the length of tissue, line, or elastic ring required during surgery.
[0032] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the scope of protection of the utility model.
Claims
1. An anal fistula cutting device, comprising a guide needle (1), characterized in that: The head of the guide needle (1) is sleeved with a needle cap (2), one end of a lead wire (4) is fixedly connected to the needle cap (2), the other end of the lead wire (4) is fixedly connected to an elastic ring (3), and the elastic ring (3) is fixedly connected to a tail wire (5).
2. The anal fistula-removing device according to claim 1, characterized in that: The guide needle (1) is made of stainless steel or plastic material, and is a slender rod structure.
3. The anal fistula-removing device according to claim 2, characterized in that: The surface of the guide needle (1) is provided with length scale values along the length direction.
4. The anal fistula-removing device according to claim 3, characterized in that: A sleeve joint (7) is axially arranged at one end of the guide needle (1), and a sleeve hole (6) is axially arranged at one end of the needle cap (2). The sleeve joint (7) of the guide needle (1) is snap-fitted into the sleeve hole (6) of the needle cap (2), and the sleeve hole (6) and the sleeve joint (7) are interference-fitted.
5. The anal fistula-removing device according to claim 4, characterized in that: A radially penetrating lead wire mounting hole (10) is provided on the needle cap (2), and one end of the lead wire (4) is passed through and fixed in the lead wire mounting hole (10).
6. The anal fistula-removing device according to claim 1, characterized in that: The elastic ring (3) is made of rubber or silicone, and the cross section of the elastic ring (3) can be square, rectangular, circular or oval.
7. The anal fistula-removing device according to claim 6, characterized in that: The fixed position of the lead wire (4) on the elastic ring (3) and the fixed position of the tail wire (5) on the elastic ring (3) are respectively located at two ends of the diameter line segment of the elastic ring (3).
8. The anal fistula-removing device according to claim 7, characterized in that: A circular first sleeve ring (8) is provided at one end of the lead wire (4) connected to the elastic ring (3), and the first sleeve ring (8) is tightly connected to the elastic ring (3); a circular second sleeve ring (9) is provided at one end of the tail wire (5) connected to the elastic ring (3), and the second sleeve ring (9) is tightly connected to the elastic ring (3).