Thread push pipe popup mechanism of automatic elastic thread ligation device

Abstract

The invention discloses a thread push pipe popup mechanism of an automatic elastic thread ligation device. The thread push pipe popup mechanism comprises at least one thread push pipe arranged on a tension elastic thread in a sleeved mode, a thread push pipe release wheel and at least one strip-shaped thread push pipe limiting plate, thread push pipes are correspondingly clamped and limited at the front ends of the thread push pipe limiting plates respectively, the thread push pipe limiting plates are arranged in parallel in the longitudinal direction, and the middles of the thread push pipe limiting plates are hinged to the inner wall of a gun body of the ligation device together. At least one protruding block used for prizing the thread push plate limiting plates is distributed on the circumferential wheel face of the thread push pipe release wheel in a staggered mode, each protruding block corresponds to one thread push pipe limiting plate above the wheel face along with the rotation of the thread push pipe release wheel, the thread push pipe release wheel is rotated to jack up the rear ends of the thread push pipe limiting plates corresponding to the protruding blocks through the protruding blocks, the thread push pipe limiting plates are made to rotate around hinge shafts of the thread push pipe limiting plates, the front ends of the thread push pipe limiting plates fall down and remove limiting on the thread push pipes, and the thread push pipes pop up under the action of the resetting force of elastic threads in the thread push pipes. The thread push pipe popup mechanism is simple in structure, low in manufacturing cost, small in manufacturing difficulty, and convenient to operate.

Description

technical field [0001] The invention relates to an accessory mechanism of an automatic elastic thread ligation device, in particular to an ejection mechanism of a pusher tube of the automatic elastic thread ligation device. Background technique [0002] "Hemorrhoid ligation (also known as hemorrhoid rubber ring ligation, hemorrhoid suction ligation, etc.)" is a common method for the treatment of hemorrhoids. ) bandage at the root (or base) of the internal hemorrhoid, thereby using the elastic retraction force of the rubber ring to block the blood supply of the hemorrhoid, making it necrotic, shrinking, and falling off, so as to achieve the purpose of healing. In the past, the traditional instruments used for ligation surgery were extremely simple, time-consuming, laborious, and prone to complications. In order to change this situation, in the past ten years, there has been an automatic device that makes the ligation operation simple and easy, that is, the automatic hemorrho...

AI Technical Summary

Problems solved by technology

[0006] Although this technical solution can overcome the defect that the rubber ring of the existing ligation device is not tight enough to ligate the target tissue more tightly, the above-mentioned ejection mechanism for positioning and ejecting the wire-pushing tube (including the wire-pushing tube) , slide rail and push wire tube release button) also has the following defects: (1) Since the card slot of the push wire tube and the card protrusion of the push wire tube release button must cooperate with each other to position the push wire tube, the upper slot of each push wire tube The opening position of the opening position and the opening position of the protrusion on the push-wire tube release button are different, which increases the difficulty of production and installation; The location is different, which increases the number of components produced and increases the production cost; (3) when performing ligation operation with this technical solution, the tissue to be ligated can only be released from the launching head first, and then the elastic wire loop is tightened through the wire pushing tube assembly Cover to ligate the hemorrhoid tissue (or other target tissue), so that the operation step of tightening the elastic thread is located after the operation step of releasing the ligated tissue, which may cause the elastic thread loop to slip off from the tissue during the operation and affect the therapeutic effect; (4) when When the push-wire tube is ejected, it is necessary to cancel the limit on the push-wire tube by pressing the release button of the push-wire tube. However, this pressing operation will cause the gun body to be held unstable by the hand during the operation, resulting in inconvenient operation, which will have a negative impact on the operation process. bad influence

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