CN109303583B

CN109303583B - Trigger structure for medical continuous firing clip applier

Info

Publication number: CN109303583B
Application number: CN201811283164.4A
Authority: CN
Inventors: 钱建民; 孙芸; 兰洲; 居海龙
Original assignee: JIANGSU HAIZE MEDICAL SCIENTIFIC DEVELOPMENT CO LTD
Current assignee: JIANGSU HAIZE MEDICAL SCIENTIFIC DEVELOPMENT CO LTD
Priority date: 2018-10-31
Filing date: 2018-10-31
Publication date: 2021-03-23
Anticipated expiration: 2038-10-31
Also published as: CN109303583A

Abstract

The utility model provides a trigger structure for medical running fire clip applier, it includes power spanner body (1), and power spanner body (1) is adorned on the pincers body handle through the hinge (2) hinge, has linked firmly drive gear (3) and spacing drag hook (4) on power spanner (1), and characterized by still installs one-way activity pushing head (5) in one side of spacing drag hook (4). The invention has simple structure and is easy to realize.

Description

Trigger structure for medical continuous firing clip applier

Technical Field

The invention relates to a medical article, in particular to a doctor biological clip repeating and clamping technology, and specifically relates to a trigger structure for a semi-automatic medical repeating and clamping forceps.

Background

In endoscopic surgery, blood vessels need to be clamped to prevent bleeding when organs and tissues are severed. At present, two kinds of clip appliers are mainly adopted to solve the problem of blood vessel clipping. One is a reusable medical biological clip single-hair clip applier, which can effectively solve the problem of blood vessel ligation in endoscopic surgery, but a doctor needs to take out the clip applier from the human body after clamping each biological clip, and then the clip applier is handed to a nurse, the nurse puts a new hemostatic clip into the jaw mouth of the forceps head, and then the nurse hands the doctor to implement secondary clipping, and the operation is repeated in this way, and two persons are needed to operate each time the clipping is completed, so that a long time is spent; and the clip applier repeatedly goes in and out of the human body, so that the risk of infection and bleeding is increased.

The other is a medical titanium clip repeating clip applier which can realize continuous firing, but is a disposable medical instrument which increases the operation cost. Meanwhile, the titanium clip for ligation has no elasticity, is easy to conduct electricity, cannot be absorbed by a human body, and affects the MRI image examination after the operation.

Chinese patent 201510009673.8, "automatic repeating plastic vascular forceps and clip cartridge", is a novel clip applier invented for overcoming the drawbacks of the above two clip appliers, which can perform the clip appliers continuously, and the hemostatic clip used belongs to a biological clip, but the design thereof has certain disadvantages:

firstly, the biological clips are easy to fall off or deviate when being continuously filled. The patent is designed in such a way that a hemostatic clamp in a hemostatic clamp box is abutted against a spring mechanism set by a clamp applying clamp, the spring mechanism stores energy before the hemostatic clamp is not triggered, after a trigger mechanism is started, the spring mechanism enters an energy release stage, and the hemostatic clamp enters a clamp applying platform (a filling clamp) at the forefront end of the clamp applying clamp under the pushing of the spring mechanism. After the vessel is clamped, the second hemostatic clamp automatically enters the clamping platform under the action of the spring mechanism. The disadvantages of this design are: the hemostatic clamp enters the clamping platform automatically under the action of energy released by the spring mechanism, and the energy release stage of the spring mechanism does not have a corresponding control mechanism in the clamping clamp. Therefore, when the previous hemostatic clamp is used, the latter hemostatic clamp is automatically ejected to enter the clamping platform, that is, the latter hemostatic clamp may collide with the previous hemostatic clamp to cause dislocation, thereby affecting the reliability or stability of the operation.

Secondly, the front end of the clip applier designed in the patent is provided with a fixed clip applier platform which is fixed in the clip applier process, and ligation of the vascular clip can be implemented only by a turnover mechanism, so that the clip applier acts in a single linkage manner, and the risk of insufficient clipping force is possible when clipping and closing the hemostatic clip.

Aiming at the problems of 201510009673.8, chinese patent 2016104370454, "semi-automatic medical continuous clip applier with biological clip box" provides a better solution, but the applicant finds that in the actual use process, because the structure of the power wrench is simple, only the distance of pushing the chuck push rod can be controlled, and the retraction of the chuck push rod in the use process cannot be controlled, when the angle of the clip body changes, the chuck push rod can automatically retract, so that the pushing force of the vascular clip suddenly disappears, and the normal operation is affected, and needs to be improved.

Disclosure of Invention

The invention aims to design a trigger structure for a medical continuous-emission clip applier, which has the functions of forward pushing limiting and retraction preventing limiting, and aims to solve the problem that the prior clip applier has inconvenient operation because a chuck push rod only has the functions of forward pushing limiting and retraction preventing in the using process.

The technical scheme of the invention is as follows:

a trigger structure for a medical repeating clip applier comprises a power wrench body 1, wherein the power wrench body 1 is hinged to a clip body handle through a hinge shaft 2, a driving gear 3 and a limiting drag hook 4 are fixedly connected to the power wrench 1, and the trigger structure is characterized in that a one-way movable push head 5 is further mounted on one side of the limiting drag hook 4.

The one-way movable pushing head 5 is arranged on a lug 7 through a torsion spring 6, and the lug 7 is fixedly connected with the power wrench body 1.

The invention has the beneficial effects that:

the invention adds the one-way letter head on the power wrench to ensure that the chuck push rod can realize advancing limit and retraction prevention.

The invention has simple structure and is easy to realize.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic perspective view of the present invention.

Fig. 3 is a schematic view of the present invention in use.

Detailed Description

The invention is further described below with reference to the figures and examples.

As shown in fig. 1-2.

A trigger structure for a medical repeating clip applier comprises a power wrench body 1, wherein the power wrench body 1 is hinged to a clamp body handle through a hinge shaft 2, a driving gear 3 and a limiting drag hook 4 are fixedly connected to the power wrench 1, and a one-way movable push head 5 is further mounted on one side of the limiting drag hook 4. The one-way movable pushing head 5 is arranged on a lug 7 through a torsion spring 6, and the lug 7 is fixedly connected with the power wrench body 1.

The working principle of the invention is as follows:

when the chuck push rod is pushed forward, the chuck can overcome the torsion of torsional spring and push 5 unidirectional activity to push down left and not influence pushing forward, when pushing in place at present, the chuck is pushed up spacing drag hook and is supported and can not move ahead, at this moment, the chuck is located between spacing drag hook 4 and the activity pushing head 5, if the chuck will contract and receive the blocking of unidirectional activity pushing head 5 and do not have the activity to contract, only move right when power wrench, drive the unit and push down 5 whole pushing head forward certain distance that pushes down left to the activity, make the vascular clamp advance so that break away from the pincers mouth at closed back pole, at this moment, it is motionless to grasp power wrench, can retract the chuck push rod to original state. The use state is as in fig. 3.

The parts not involved in the present invention are the same as or can be implemented using the prior art.

Claims

1. A trigger structure for medical continuous firing clip applier comprises a power wrench body (1), wherein the power wrench body (1) is hinged on a clip body handle through a hinge shaft (2), a driving gear (3) and a limiting drag hook (4) are fixedly connected to the power wrench body (1), and the trigger structure is characterized in that a one-way movable push head (5) is further mounted on one side of the limiting drag hook (4); the one-way movable pushing head (5) is arranged on the lug (7) through a torsion spring (6), and the lug (7) is fixedly connected with the power wrench body (1); when the chuck push rod is pushed forward, the chuck can overcome the torsion of torsional spring and push the head in one-way activity down left and not influence and push forward, when pushing forward in place at present, the chuck is supported and can not move ahead by spacing drag hook, at this moment, the chuck is located between spacing drag hook and the one-way activity head of pushing away, the chuck can receive the stopping of one-way activity head of pushing away if will contract and do not have the activity to contract, only move right when the power wrench body, drive the whole pushing down left of one-way activity head, promote the chuck and continue to move forward certain distance, make the vascular clamp advance so that break away from the pincers mouth after the closure, at this moment, it is motionless to grasp the power wrench body, can retract the chuck push rod.