CN211834613U - Disposable snare - Google Patents

Abstract

The utility model relates to a medical appliance, in particular to a disposable snare. Can overcome the defect that the existing disposable snare is not easy to pass through a puncture outfit because the head slipknot is in an open state. The utility model adopts the technical proposal that: a disposable snare comprises a set of wire binding rods, wherein the rear parts of the set of wire binding rods can be provided with notches for breaking; the binding wire is arranged in the binding wire rod, one end of the binding wire extends out of the front end of the binding wire rod, a movable buckle is formed at the front end of the binding wire rod, and the other end of the binding wire rod is fixedly connected with the tail end of the binding wire rod; the outer sleeve is sleeved on the front part of the loop ligature rod and the outer side of the slipknot; and one end of the silica gel sealing element is in static sealing interference connection with the rear end of the outer sleeve, and the other end of the silica gel sealing element is in dynamic sealing connection with the loop ligature rod. The utility model is simple and practical, and can protect the snare from deformation. The utility model discloses simple structure, convenient to use.

Description

Disposable snare

Technical Field

The utility model relates to a medical appliance, in particular to a disposable snare.

Background

The laparoscopic surgery has been widely used in laparoscopic cholecystectomy and appendectomy due to the advantages of small trauma, quick postoperative recovery, short hospitalization time, few complications and the like, and is popular with doctors and patients. However, the suture ligation is used under laparoscope alone, which requires skilled endoscopic operation techniques and is highly demanding for medical staff. The use of titanium clips, plastic clips and absorbable clips for the closure of the root of luminal tissue has many drawbacks, whether sutures commonly used in open surgery can be introduced under an endoscope, and the simple operation is also required, which becomes a problem generally concerned by many clinicians.

Although a simple disposable snare comprises a set of binding rod and a set of binding wire, the operation is not easy to be operated because the slipknot of the head is in an open state and is not easy to pass through the puncture outfit.

Disclosure of Invention

In order to solve the problems, the utility model provides a disposable snare, which aims to overcome the defects of the surgical instruments.

In order to achieve the above object, the utility model adopts the following technical scheme: a disposable snare comprises a set of wire binding rods, wherein the rear parts of the set of wire binding rods can be provided with notches for breaking; the binding wire is arranged in the binding wire rod, one end of the binding wire extends out of the front end of the binding wire rod, a movable buckle is formed at the front end of the binding wire rod, and the other end of the binding wire rod is fixedly connected with the tail end of the binding wire rod; the outer sleeve is sleeved on the front part of the loop ligature rod and the outer side of the slipknot; and one end of the silica gel sealing element is in static sealing interference connection with the rear end of the outer sleeve, and the other end of the silica gel sealing element is in dynamic sealing connection with the loop ligature rod.

The utility model has the advantages that: before use, the slipknot is bound by the outer sleeve and is in a furled state, so that the snare easily penetrates through the puncture outfit, then the loop ligature rod extends forwards, and the slipknot is restored to an open state under the action of elastic tension, thereby facilitating loop ligature. The silica gel sealing piece is axially sealed with the rear end of the outer sleeve and the outer side of the loop ligature rod, so that blood and body fluid cannot seep out to cause pollution. The utility model discloses simple structure, easily operation, convenient to use.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate the embodiments of the present invention, and therefore should not be considered as a limitation to the technical scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a perspective schematic view of an embodiment of the present invention

Fig. 2 is a perspective structure diagram of the present invention in a use state.

Fig. 3 is a perspective structural diagram of another use state of the present invention.

Fig. 4 is a cross-sectional view a-a of a silicone seal according to an embodiment of the present invention.

In the figure: 1. a loop ligature rod 2, a loop ligature 3, a movable buckle 4, an outer sleeve 5 and a silica gel sealing element

Detailed Description

The present invention will be further described with reference to the following specific embodiments and accompanying drawings.

As shown in fig. 1, 2, 3, 4, a single use snare comprising: a loop ligature rod 1, a loop ligature 2, a movable buckle 3, an outer sleeve 4 and a silica gel sealing element 5.

The loop ligature rod 1 can be made of polypropylene (PP), the material is an excellent thermoplastic material, and has the advantages of small specific gravity, no toxicity, easy processing, impact resistance, flexibility resistance and the like, and the length is as follows: 25 cm-60 cm, preferably 30cm, the rear of the loop ligature rod 1 may be provided with a notch for breaking.

The ligature 2 may be a non-absorbable suture made of a high molecular polymer, such as a single strand polypropylene thread, or may be an absorbable suture made of a high molecular polymer, which is not particularly limited.

The ligation wire 2 is arranged in the ligation wire rod 1, one end of the ligation wire extends out of the front end of the ligation wire rod 1 to form a movable buckle 3, and the other end of the ligation wire is fixed at the tail end of the ligation wire rod 1.

The material of outer tube 4 can select the stainless steel, and length is: from 15cm to 20cm, preferably 15 cm.

The front end of the silica gel sealing element 5 is in static sealing interference connection with the rear end of the outer sleeve 4, and the interference magnitude is 20%.

The rear end of the silica gel sealing element 5 is in dynamic sealing interference fit with the ligation rod 1, and the interference magnitude is 10%.

The outer diameter of the silica gel sealing piece 5 is matched with the inner diameter of the notch of the puncture outfit.

The end of the loop ligature rod 1 is inserted along the front end port of the outer sleeve 4, passes through the outer sleeve 4 and the silica gel sealing piece 5, so that the outer sleeve 4 is positioned at the front part of the loop ligature rod 1, and the slipknot 3 is sleeved to be in a folded state, as shown in figure 1.

The utility model discloses a realize through following process: when the slipknot 3 is in a furled state, the front end of the snare penetrates into a body cavity along the puncture outfit until the outer sleeve 4 is completely inserted, and the silica gel special-shaped sealing element 5 is clamped in the notch of the puncture outfit, so that the snare is not easy to shake. The loop ligature rod 1 is extended forwards, the slipknot 3 is under the action of elastic tension to recover an opening state, as shown in figure 2, after a target object is sleeved, the tail end of the loop ligature rod 1 is broken along the notch, the tail end of the loop ligature rod 1 is separated from the loop ligature rod 1, and an operator finishes loop ligature by drawing the tail end of the loop ligature rod 1 and the extended loop ligature 2 to contract the slipknot 2 at the front end of the loop ligature rod 1, as shown in figure 3.

Claims (9)

1. The utility model provides a disposable snare, includes a set of ligature pole and a set of ligature, the set ligature is arranged in the set ligature pole, just the one end of set ligature stretches out the front end of set ligature pole, and set ligature pole front end forms a slipknot, the other end with the terminal fixed connection of set ligature pole, its characterized in that: the outer sleeve is sleeved on the front portion of the loop ligature rod and the outer side of the movable buckle, a silica gel sealing piece is arranged, one end of the silica gel sealing piece is in interference fit with the rear end static seal of the outer sleeve, and the other end of the silica gel sealing piece is in dynamic seal with the loop ligature rod.

2. A single use snare according to claim 1, wherein: the rear part of the loop ligature rod is provided with a notch for breaking.

3. A single use snare according to claim 1, wherein: the material of the loop ligature rod is polypropylene.

4. A single use snare according to claim 1, wherein: the ligature is a single-stranded polypropylene wire.

5. A single use snare according to claim 1, wherein: the outer sleeve is made of stainless steel.

6. A single use snare according to claim 1, 2 or 3, wherein: the length of the bundling wire rod is as follows: 25 cm-60 cm.

7. A single use snare according to claim 6, wherein: the length of the bundling wire rod is as follows: 30 cm.

8. A single use snare according to claim 1 or 5, wherein: the length of the outer sleeve is as follows: 10 cm-20 cm.

9. A single use snare according to claim 8, wherein: the length of the outer sleeve is as follows: 15 cm.

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