Anal fistula curet
By designing an anal fistula curette with a main body, a curette head, and a ball head structure, the problem of difficulty in locating and cleaning the anal fistula tract in existing technologies has been solved. This enables effective locating of the fistula tract and cleaning of necrotic tissue, reducing the recurrence rate and complications of anal fistulas.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 李刚
- Filing Date
- 2024-12-30
- Publication Date
- 2026-04-28
AI Technical Summary
Existing fistula probes are insufficient to effectively locate complex high-level fistulas and clean necrotic and purulent tissues, leading to a higher incidence of fistula recurrence and complications.
A fistula scraper has been designed, comprising a main body, a scraper head, and a ball head. The outer wall of the main body has protrusions, and the scraper head has a recessed area. The entire scraper is made of metal and is used to locate the fistula and scrape away necrotic tissue.
It enables effective identification of the fistula and removal of necrotic tissue, reducing the recurrence rate and complications of anal fistula.
Smart Images

Figure CN224166371U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of anal fistula treatment device technology, specifically to an anal fistula curette. Background Technology
[0002] Anal fistula is a common anorectal disease, characterized by the formation of a fistula tract with an internal and external opening. Treatment often involves using a seton, which is inserted through both the internal and external openings of the fistula tract to facilitate drainage. High-level complex anal fistulas, in particular, present greater difficulty in locating the fistula tract due to their higher internal opening.
[0003] Traditional anal fistula seton surgery simply opens the fistula tract and attaches a suture. The fistula tract is not always fully explored, and the rotten and purulent tissue inside the fistula is not easily cleaned effectively, resulting in a higher recurrence rate and more complications of anal fistula.
[0004] Commonly used fistula probes are used to insert a seton into the fistula tract, such as the "An Anal Fistula Probe" disclosed in Chinese Utility Model Patent No. CN221616967U. While fistula probes can help locate the fistula tract to some extent, they cannot effectively clean the necrotic and purulent tissue within it. Therefore, further improvements are needed. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide an anal fistula scraper that can be used to both locate the fistula and scrape away necrotic tissue, in light of the current state of the technology.
[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a fistula curette, characterized in that it includes:
[0007] The main body has a head and a tail that are opposite each other along its length;
[0008] The head of the key is fixed to the head of the main body;
[0009] The head of the ball is connected to the tail of the main body.
[0010] To prevent slippage and to assist in scraping away necrotic tissue within the fistula, the outer wall of the main body has protrusions. These protrusions increase friction, making it easier for the doctor to handle, and also act on the necrotic tissue, facilitating the scraping away of the necrotic tissue within the fistula.
[0011] Preferably, there are multiple protrusions, which are distributed at intervals along the main body.
[0012] Preferably, for ease of manufacturing, the protrusions are conical or diamond-shaped.
[0013] Preferably, for ease of manufacturing, the main body is rod-shaped.
[0014] To facilitate the containment of putrefied tissue, the spoon head has a recessed area for containing putrefied tissue.
[0015] For ease of manufacturing, the body, spoon head, and ball head are integrally molded.
[0016] To improve strength, the fistula curette is made of metal.
[0017] Preferably, the fistula curette is 10-15 cm long. Based on clinical experience, the fistula length is generally less than 10 cm, and the longest is generally less than 15 cm. Setting the fistula curette to 10-15 cm provides wider applicability.
[0018] Preferably, the outer circumferential dimensions of both the spoon head and the ball head are less than or equal to the outer circumferential dimensions of the main body. This ensures that the sizes of the spoon head and the ball head are appropriate, not too large, thus facilitating entry and exit from the fistula.
[0019] Compared with the prior art, the advantages of this utility model are as follows: By setting up a main body, a key head, and a ball head, when it is necessary to explore the fistula tract, the ball head is inserted into the fistula tract, so that the fistula curette can explore the fistula tract. Moreover, the ball head is relatively rounded and will not scratch the patient. When it is necessary to clean the necrotic tissue in the fistula tract, the key head is inserted into the fistula tract, and the necrotic tissue is scraped off through the key head. In this way, the fistula curette can be used to explore the fistula tract and scrape off the necrotic tissue. The structure is reasonable and practical, which can reduce the recurrence rate and complications of anal fistula. Attached Figure Description
[0020] Figure 1 This is a perspective view of an embodiment of the present utility model;
[0021] Figure 2 for Figure 1 A magnified schematic diagram of part A in the middle;
[0022] Figure 3 for Figure 1 A magnified schematic diagram of part B in the middle. Detailed Implementation
[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0024] See Figures 1-3 This is a preferred embodiment of the present invention. The anal fistula curette includes a main body 1, a curette head 2, and a ball head 3.
[0025] The main body 1 has a head and a tail along its length; the main body 1 is rod-shaped. (See also...) Figure 2 The outer wall of the main body 1 has protrusions 11. There are multiple protrusions 11, which are distributed at intervals along the main body 1. The protrusions 11 are conical, or they can be in a diamond pattern. The number and shape of the protrusions 11 can be adjusted as needed.
[0026] See Figure 1 The spoon head 2 is fixed to the head of the body 1; the spoon head 2 has a recessed area 21 for accommodating putrefied tissue.
[0027] See Figure 3 The head 3 of the ball is connected to the tail of the body 1.
[0028] The main body 1, the spoon head 2, and the ball head 3 are integrally molded and made entirely of metal. Preferably, the fistula curette is made of stainless steel, specifically 12Cr as specified in GB / T1220-2007. 18 Ni9. The outer circumferential dimensions of the spoon head 2 and the ball head 3 are both smaller than the outer circumferential dimensions of the main body 1, or they can both be equal to the outer circumferential dimensions of the main body 1. The diameter of the largest outer circumference of the main body 1 is 0.25 cm. The length of the fistula curette is 10-15 cm, preferably 15 cm.
[0029] The working principle and usage method are as follows.
[0030] When it is necessary to locate the fistula, insert the ball head 3 through the external opening into the fistula so that the fistula curette can locate the fistula.
[0031] When it is necessary to clean the necrotic tissue in the fistula, insert the tip 2 of the spoon into the fistula and scrape the necrotic tissue back and forth. At the same time, the protrusion 11 plays an auxiliary role in rubbing the tissue, so as to make the purulent tissue fall off and be easy to flush.
[0032] After flushing the fistula, a suture was placed.
Claims
1. A curette for anal fistula, characterized in that: Including The main body (1) has a head and a tail that are opposite each other along its length. The head of the key (2) is fixed to the head of the main body (1); The head of the ball (3) is connected to the tail of the main body (1); The outer wall of the main body (1) has protrusions (11).
2. The fistula curette according to claim 1, characterized in that: There are multiple protrusions (11), which are distributed at intervals along the main body (1).
3. The anal fistula curette according to claim 1, characterized in that: The protrusion (11) is conical or diamond-shaped.
4. The fistula curette according to claim 1, characterized in that: The main body (1) is rod-shaped.
5. The anal fistula curette according to claim 1, characterized in that: The spoon head (2) has a recessed area (21) for accommodating putrefactive tissue.
6. The anal fistula curette according to claim 1, characterized in that: The main body (1), the spoon head (2), and the ball head (3) are integrally formed.
7. The fistula curette according to claim 1, characterized in that: The outer circumferential dimensions of the spoon head (2) and the ball head (3) are both smaller than or equal to the outer circumferential dimensions of the body (1).
Citation Information
Patent Citations
Anal fistula probe
CN221616967U