Cutter wire self-cleaning mechanism and mucous membrane incision knife thereof

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a knife wire self-cleaning mechanism and a mucous membrane incision knife thereof, the knife wire self-cleaning mechanism comprises a knife wire sleeve and a knife wire arranged in the knife wire sleeve in a sliding mode, and an elastic scraping ring used for scraping tissue adhered to the knife wire is clamped between the inner peripheral wall of the knife wire sleeve and the outer peripheral wall of the knife wire. A clamping groove for clamping the elastic scraping ring is formed in the inner circumferential wall of the cutter wire sleeve, and a notch communicated with a center hole of the elastic scraping ring is formed in the elastic scraping ring in the radial direction; the elastic scraping ring is used for scraping tissues adhered to the knife wire in the retraction process of the knife wire, self-cleaning of the knife wire is achieved, the structure is simple, operation is convenient, operation efficiency is improved, in addition, the elastic scraping ring is clamped into the clamping groove through the notch in the elastic scraping ring, and installation is more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a blade self-cleaning mechanism and a mucosal incision knife thereof. Background Art

[0002] When the mucosal incision knife is used, the blade wire is extended by pushing the slip ring for marking or cutting. After the blade wire contacts the tissue, tissue will adhere to it, affecting subsequent operations. In the prior art, the blade wire must either be replaced or removed for cleaning, which affects the efficiency of the operation and is costly. Utility Model Content

[0003] The technical problem to be solved by the utility model is: in order to solve the problem in the prior art that when tissue adheres to the blade wire, the blade wire must either be replaced or removed for cleaning, which affects the surgical efficiency and is costly, a blade wire self-cleaning mechanism and a mucosal incision knife are provided.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a knife wire self-cleaning mechanism, comprising a knife wire sleeve and a knife wire slidably arranged inside the knife wire sleeve, the sliding ring drives the knife wire to slide through a cable to realize the extension and retraction of the knife wire, and an elastic scraper ring for scraping off tissue adhered to the knife wire is clamped between the inner peripheral wall of the knife wire sleeve and the outer peripheral wall of the knife wire, the knife wire is extended for cutting, and the knife wire is retracted after cutting, and relative movement occurs between the elastic scraper ring and the knife wire to scrape off tissue adhered to the knife wire, and the scraped tissue can continue to remain in the human body, and a clamping groove for the elastic scraper ring to be clamped is provided on the inner peripheral wall of the knife wire sleeve, and the elastic scraper ring is radially provided with a notch connected to its center hole. When installing the elastic scraper ring, the elastic scraper ring is first tightened, at this time, the notch is closed, and then the elastic scraper ring is placed in the clamping groove, and the elastic scraper ring is released, at this time the notch is opened, and the elastic scraper ring is clamped into the clamping groove under the action of elastic force to realize the clamping connection with the knife wire sleeve.

[0005] The above technical solution utilizes an elastic scraper ring to scrape off tissue adhered to the blade wire during its retraction process, thereby achieving self-cleaning of the blade wire. It has a simple structure and is easy to operate, thereby improving surgical efficiency. In addition, the notch on the elastic scraper ring is used to clip the elastic scraper ring into the slot, making installation more convenient.

[0006] Furthermore, the inner wall of the elastic scraper ring is provided with a plurality of slots connected to the center hole along its circumference. The plurality of slots can improve the deformation degree of the elastic scraper ring, making it easier to install. Scraping teeth are formed between two adjacent slots, and the plurality of scraping teeth form a comb-like structure. When the structure is used to scrape tissue, jamming between the tissues can be avoided, thereby ensuring smooth extension and retraction of the blade wire.

[0007] Furthermore, the elastic scraper ring is gradually inclined from the outside to the inside toward the distal end to form a scraping portion, and the inclined scraping portion can shovel the tissue on the blade wire, thereby achieving a better scraping effect.

[0008] Furthermore, the cutting wire includes a cutting rod and a cutting head protruding from the distal end of the cutting rod, and the elastic scraper ring divides the inner cavity of the cutting wire sleeve into a first cavity located at the distal end and a second cavity located at the proximal end, and the first cavity is used to accommodate the cutting head in a retracted state.

[0009] Furthermore, clamping holes for inserting the clamping piece are provided on both sides of the notch. The elastic scraper ring can be tightened by inserting the clamping piece into the clamping hole and applying force, so as to facilitate subsequent installation.

[0010] Furthermore, the elastic scraper ring is made of insulating material.

[0011] A mucosal incision knife comprises the above-mentioned blade self-cleaning mechanism.

[0012] The beneficial effects of the utility model are as follows: the utility model utilizes the elastic scraper ring to scrape off the tissue adhered to the knife wire during its retraction process, thereby realizing self-cleaning of the knife wire, having a simple structure and convenient operation, thereby improving surgical efficiency; in addition, the notch on the elastic scraper ring is utilized to clip the elastic scraper ring into the slot, making installation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 It is a structural schematic diagram showing the knife wire in a retracted state;

[0015] Figure 2 1. It is a schematic diagram of the structure in which the knife wire is in an extended state;

[0016] Figure 3 is a three-dimensional schematic diagram of an elastic scraper ring;

[0017] Figure 4 It is the front view of the elastic scraper ring;

[0018] Figure 5 is a cross-sectional view of the elastic scraper ring;

[0019] In the figure:

[0020] 1. Wire sleeve; 101. Card slot;

[0021] 2. Knife wire; 201. Knife rod; 202. Knife head;

[0022] 3. Elastic scraper ring; 301. Center hole; 302. Notch; 303. Notch; 304. Scraping teeth; 305. Clamping hole; 306. Scraping part. DETAILED DESCRIPTION

[0023] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0024] The “distal end” in this application refers to the end close to the patient, and the “proximal end” refers to the end close to the operator.

[0025] Embodiment 1:

[0026] like Figure 1-Figure 5 As shown, the utility model is a knife wire self-cleaning mechanism, including a knife wire sleeve 1 and a knife wire 2 axially slidably arranged inside the knife wire sleeve 1. The structure of the knife wire 2 can be but not limited to a D-shaped knife, a triangular knife or a pentagonal knife, etc., and this embodiment does not limit this. The slip ring drives the knife wire 2 to slide through a cable to achieve the extension and retraction of the knife wire 2; an elastic scraping ring 3 for scraping off tissue adhered to the knife wire 2 is clamped between the inner peripheral wall of the knife wire sleeve 1 and the outer peripheral wall of the knife wire 2. The elastic scraping ring 3 is made of insulating material. The knife wire 2 is extended for cutting. After cutting, the knife wire 2 is retracted. The elastic scraping ring 3 and the knife wire 2 move relative to each other to scrape off the tissue adhered to the knife wire 2, and the scraped tissue can continue to remain in the human body;

[0027] The knife wire 2 includes a knife rod 201 and a knife head 202 protruding from the distal end of the knife rod 201. The elastic scraper ring 3 divides the inner cavity of the knife wire sleeve 1 into a first cavity at the distal end and a second cavity at the proximal end. The first cavity is used to accommodate the knife head 202 in a retracted state.

[0028] The inner wall of the wire sleeve 1 is provided with a slot 101 for the elastic scraper ring 3 to be inserted into, and the elastic scraper ring 3 is radially provided with a notch 302 connected to its center hole 301, and clamping holes 305 for the clamping member to be inserted are provided on both sides of the notch 302. The elastic scraper ring 3 is approximately a C-shaped retaining ring. When installing the elastic scraper ring 3, first insert the clamping member into the clamping hole 305 and apply force to tighten the elastic scraper ring 3. At this time, the notch 302 is closed, and then the elastic scraper ring 3 is placed in the slot 101, and the elastic scraper ring 3 is released. At this time, the notch 302 is opened, and the elastic scraper ring 3 is inserted into the slot 101 under the action of elastic force to achieve clamping connection with the wire sleeve 1.

[0029] The inner wall of the elastic scraper ring 3 is provided with a plurality of slots 303 connected to the central hole 301 along its circumference, and the plurality of slots are distributed circumferentially. The plurality of slots 303 can improve the deformation degree of the elastic scraper ring 3, making it easier to install. Scraping teeth 304 are formed between two adjacent slots 303, and the plurality of scraping teeth 304 form a comb-like structure. When the structure is used to scrape tissue, sticking with the tissue can be avoided, thereby ensuring smooth extension and retraction of the blade 2. The elastic scraper ring 3 gradually tilts toward the distal end from the outside to the inside to form a scraping portion 306, that is, the elastic scraper ring 3 includes a main body with a columnar structure at the proximal end and a scraping portion 306 with a conical structure at the distal end. The inclined scraping portion 306 can shovel the tissue on the blade 2, thereby achieving a better scraping effect.

[0030] Embodiment 2:

[0031] A mucosal incision knife comprises the above-mentioned blade self-cleaning mechanism.

[0032] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A blade self-cleaning mechanism, characterized in that: The invention comprises a cutting wire sleeve (1) and a cutting wire (2) slidably arranged inside the cutting wire sleeve (1); an elastic scraper ring (3) for scraping off tissue adhered to the cutting wire (2) is arranged between the inner peripheral wall of the cutting wire sleeve (1) and the outer peripheral wall of the cutting wire (2); a slot (101) for the elastic scraper ring (3) to be inserted into the inner peripheral wall of the cutting wire sleeve (1); and a notch (302) communicating with a central hole (301) of the elastic scraper ring (3) is arranged radially.

2. A blade self-cleaning mechanism according to claim 1, characterized in that: The inner peripheral wall of the elastic scraper ring (3) is provided with a plurality of slots (303) communicating with the central hole (301) along its circumferential direction, and scraper teeth (304) are formed between two adjacent slots (303).

3. A blade self-cleaning mechanism according to claim 1, characterized in that: Clamping holes (305) for inserting a clamping piece are formed on both sides of the notch (302).

4. A blade self-cleaning mechanism according to claim 1, characterized in that: The elastic scraper ring (3) gradually tilts toward the distal end from the outside to the inside to form a scraping portion (306).

5. The blade self-cleaning mechanism according to claim 1, characterized in that: The knife wire (2) comprises a knife rod (201) and a knife head (202) which is located at the distal end of the knife rod (201) and protrudes outwardly. The elastic scraper ring (3) divides the inner cavity of the knife wire sleeve (1) into a first cavity located at the distal end and a second cavity located at the proximal end. The first cavity is used to accommodate the knife head (202) in a retracted state.

6. The blade self-cleaning mechanism according to claim 1, characterized in that: The elastic scraper ring (3) is made of insulating material.

7. A mucosal incision knife, comprising a blade self-cleaning mechanism as described in any one of claims 1 to 6.

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