CN217186332U

CN217186332U - Hook scissors

Info

Publication number: CN217186332U
Application number: CN202122747288.7U
Authority: CN
Inventors: 林仲可; 吴龙; 金煜; 林镇; 王立波; 张钊; 滕铖; 王金泉; 吴京涛
Original assignee: Second Affiliated Hospital and Yuying Childrens Hospital of Wenzhou Medical University
Current assignee: Second Affiliated Hospital and Yuying Childrens Hospital of Wenzhou Medical University
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-08-16
Anticipated expiration: 2031-11-08

Abstract

The utility model relates to a hook shear, including blade portion, body and handle portion, blade portion includes a fixed blade and a movable blade. Through being provided with the barb at the movable blade front end, and be equipped with soft silk passageway and soft silk drive and locking mechanical system from body rear end to movable blade barb front end on the hook scissors, fixed soft needle clearance fit wears to establish in the soft silk passageway, when carrying out the operation when cutting off like this, arranges the movable blade in and cuts the tissue below, and operation soft silk drive and locking mechanical system promote fixed soft needle and slide forward to stretch out the activity blade, pierce the target tissue, reach the purpose of fixed target tissue, then operation hook scissors makes movable blade rotatory around the articulated shaft, backward movement for the target tissue is close to the blade, keeps away from surrounding tissue to closed blade reaches the purpose of shearing the tissue. The utility model discloses enable target tissue and be fixed in hook shear blade mouth and do not break away from, and along with the blade is closed, target tissue can with the place ahead around the tissue separation and be close to the blade for target tissue and tissue further separation around with help further separating discernment tissue around, thereby reduce the risk of tissue around the damage, finally increase the security and the convenience of operation.

Description

Hook scissors

Technical Field

The utility model belongs to the field of surgical instruments, specifically speaking relates to a can hook earlier the target tissue of cutting, makes the target tissue be fixed in hook and cuts the edge of a knife and do not break away from, and the closed surgical instruments who cuts the target tissue of rethread cutting edge.

Background

In clinical surgical procedures, it is often necessary to cut the target tissue. In present surgical operation, because current scissors blade does not have the mechanism that is used for fixed target tissue, but target tissue often can remove, during direct closed cutting edge blade, target tissue can break away from the scissors blade, need counterpoint again, can increase the loaded down with trivial details degree of operation, and when cutting target tissue like this, because the inclined plane effect of scissors blade, target tissue breaks away from the scissors blade to the place ahead easily, force the scissors to need to continue to stretch forward, lead to the blade head and the tissue that target tissue need not cut with the place ahead to be closer to, at this moment cut target tissue with the trade and can damage important tissue on every side. When the endoscopic surgery is performed, the operation space is limited, the two surgical instruments are difficult to operate cooperatively, and particularly when the single-hole endoscopic surgery is performed, only one instrument is used for operating, and the target tissue is required to be fixed on the cutting edge of the scissors when the scissors are required to be cut. In addition, when the endoscope is operated, the target tissue is separated from the shearing edge forward and is closer to the surrounding tissue forward, so that the risk of damage to the surrounding tissue is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a surgical scissors cutting instrument, this apparatus can be fixed in the hook with the target tissue and cut the blade, and when the hook cut blade was closed, the target tissue did not break away from the blade, and along with the blade is closed, the target tissue can be organized the separation with the place ahead and be close to the cutting edge for the target tissue further separates with organizing on every side, helps further separating discernment tissue on every side, thereby reduces the risk of damaging tissue on every side, finally increases the security and the convenience of operation.

In order to achieve the purpose, the utility model discloses a hook is cut, including cutting edge portion, body and handle portion, cutting edge portion sets up at the body front end, and handle portion sets up the rear end at the body, its characterized in that: the hook shear is also provided with a metal fixed soft needle, the body is a bar-shaped component, the cutting edge part comprises a fixed blade and a movable blade, the handle part comprises a holding part and an operating handle, the fixed blade is fixed at the front end of the body, the front end of the movable blade and the front end of the fixed blade are hinged to form a shearing structure, and the front end of the movable blade is provided with a barb; the hook shear is provided with a soft wire channel and a soft wire driving and locking mechanism from the rear end of the body to the front end of the movable blade barb, the fixed soft needle is arranged in the soft wire channel in a clearance fit mode, the operating handle is hinged to the body, a linkage mechanism is arranged between the operating handle and the movable blade, and the operating handle is controlled through the linkage mechanism to enable the movable blade to perform shearing action.

As a further arrangement of the utility model, the body is provided with a pore channel from the rear end to the front end and the movable blade to form the soft silk channel.

As a further setting of the utility model, axial positioning, circumference rotatably are equipped with drive nut on the soft silk passageway, be equipped with one section drive screw on the fixed soft needle, drive screw and the mutual screw-thread fit of drive nut constitute soft silk drive and locking mechanical system.

As a further setting of the utility model, soft silk passageway one side is equipped with the eccentric wheel and holds the chamber, the eccentric wheel hold chamber part side with soft silk passageway looks UNICOM, the eccentric wheel holds rotatably to be equipped with the eccentric wheel in the chamber, the rear end of fixed soft needle is equipped with the stopper and constitutes soft silk drive and locking mechanical system.

As a further setting of the utility model, the through-hole that link up around still being equipped with in the body, the gangbar is worn to be equipped with by the clearance fit in the through-hole, the operating handle articulates near through-hole rear end, the both ends of gangbar respectively with movable blade and the articulated constitution of operating handle activity link gear.

As a further arrangement of the utility model, the elastic part is arranged between the holding part and the operating handle to make the holding part and the operating handle always have a mutual separation elastic force of resetting.

The beneficial effects of the utility model are that, through being provided with the barb at the movable blade front end, and be equipped with soft silk passageway and soft silk drive and locking mechanical system from body rear end to movable blade barb front end on the hook scissors, fixed soft needle clearance fit wears to establish in the soft silk passageway, like this, when carrying out the operation and cutting off, arrange movable blade in and cut the tissue below, operation soft silk drive and locking mechanical system promote fixed soft needle and slide forward to stretch out the activity blade, pierce target tissue, reach the purpose of fixed target tissue, then the operation hook scissors makes movable blade rotatory around articulated shaft 10, moves backward, makes target tissue be close to the blade, keeps away from tissue on every side, and closed blade reaches the purpose of cuting the tissue. The utility model discloses enable target tissue and be fixed in hook shear blade mouth and do not break away from, and along with the blade is closed, target tissue can with the place ahead around the tissue separation and be close to the blade for target tissue and tissue further separation around with help further separating discernment tissue around, thereby reduce the risk of tissue around the damage, finally increase the security and the convenience of operation.

The invention will be further described with reference to the collective examples and the attached drawings.

It is to be noted that the terms "comprises" and "comprising," as well as any variations thereof, in the description and claims of this application are intended to cover non-exclusive inclusions, and that the terms "upper", "lower", "inner", "outer", "middle", and the like, indicate orientations or positional relationships based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Drawings

FIG. 1 is a schematic view of an appearance structure of an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1I;

FIG. 3 is a schematic structural diagram of another embodiment of the present invention;

FIG. 4 is a schematic view of the appearance structure of the folded state of the cutting edge portion according to the embodiment of the present invention;

FIG. 5 is a schematic view of the top view of the embodiment of the present invention;

FIG. 6 is a cross-sectional view of the structure of FIG. 5A-A;

FIG. 7 is an enlarged view of a portion of FIG. 1 II;

FIG. 8 is a sectional view of another embodiment of the present invention;

FIG. 9 is an enlarged view of a portion of FIG. 8 III;

fig. 10 is an enlarged view of a portion of fig. 8 IV.

Detailed Description

As shown in fig. 1 and 2, the hook shear of the present invention comprises a cutting edge portion 1, a body 2, a metal fixed soft needle 4 and a handle portion 3. The cutting edge part 1 is arranged at the front end of the body 2, the handle part 3 is arranged at the rear end of the body 2, the body 2 is a bar-shaped component, the cutting edge part 1 comprises a fixed blade 101 and a movable blade 102, the handle part 3 comprises a hand holding part 301 and an operating handle 302, the fixed blade 101 is fixed at the front end of the body 2, the front end of the movable blade 102 is provided with a barb 103, and the front end of the movable blade 102 and the front end of the fixed blade 101 are hinged to form a shearing structural mode of backward hooking and shearing.

The hook shear is provided with a soft wire channel 201 from the rear end of the body 2 to the front end of the barb 103 of the movable blade 102 and a soft wire driving and locking mechanism, the fixed soft needle 4 is arranged in the soft wire channel 201 in a clearance fit manner, the fixed soft needle 4 can move back and forth in the soft wire channel 201 in a telescopic manner by operating the soft wire driving and locking mechanism, the front end of the fixed soft needle 4 is exposed or retracted from the front end of the barb 103 of the movable blade 102, and the fixed soft needle 4 is locked and fixed at a proper position. The operating handle 302 is hinged to the body 2, a linkage mechanism is arranged between the operating handle 302 and the movable blade 102, and the operating handle 302 controls the movable blade 102 to perform a shearing action through the linkage mechanism.

As shown in fig. 5, 6 and 7, in this embodiment, the hook shear also includes a blade portion 1, a body 2, a metal fixed soft needle 4 and a handle portion 3. The body 2 is a bar-shaped member, the blade portion 1 is disposed at the front end of the body 2, the blade portion 1 includes a fixed blade 101 and a movable blade 102, wherein the fixed blade 101 is fixed at the front end of the body 2, preferably, the fixed blade 101 is disposed integrally with the body 2, the front end of the movable blade 102 is provided with a barb 103, and the front end of the movable blade 102 is hinged to the front end of the fixed blade 101 to form a shearing structure of hooking and shearing backwards. The handle portion 3 includes a grip portion 301 and an operating handle 302, and the handle portion 3 is disposed at the rear end of the body 2, and the two may be integrally disposed or fixedly connected to each other through a connecting member. The body 2 is provided with pore channels from the rear end to the front end and in the movable blade 102 to form the soft wire channel 201, the fixed soft needle 4 is arranged in the soft wire channel 201 to the front end of the movable blade 102 in a clearance fit mode, and the fixed soft needle 4 is made of soft metal wires.

In this embodiment, as a specific configuration of the soft filament driving and locking mechanism, a nut accommodating cavity 203 is provided at a rear section of the soft filament channel 201 in the body 2, a driving nut 5 is provided in the nut accommodating cavity 203, the driving nut 5 is axially positioned and circumferentially and rotatably provided, a rear end of the fixed soft needle 4 is connected to an end of a section of the driving screw 6, and the driving screw 6 and the driving nut 5 are in threaded fit with each other to form the soft filament driving and locking mechanism.

By the arrangement, the flexible needle 4 can be driven to stretch and retract by rotating the driving nut 5, and the locking is realized at the same time.

As shown in fig. 8-10, the soft wire drive and lock mechanism may also be configured as follows: an eccentric wheel containing cavity 204 is arranged on one side of the soft wire channel 201, part of the side face of the eccentric wheel containing cavity 204 is communicated with the soft wire channel 201, an eccentric wheel 7 is rotatably arranged in the eccentric wheel containing cavity 204, and a limiting block is arranged at the rear end of the fixed soft needle 4 to form the soft wire driving and locking mechanism.

To operate the cutting action, a linkage is provided between the handle 302 and the movable blade 102. In this embodiment, the linkage mechanism is specifically that a through hole 202 which is through from front to back is formed in the body 2, a linkage rod 9 is arranged in the through hole 202 in a penetrating manner in a clearance fit manner, the operating handle 302 is hinged near the rear end of the through hole 202, and two ends of the linkage rod 9 are respectively movably hinged with the movable blade 102 and the operating handle 302 to form the linkage mechanism. Thus, when the grip portion 301 and the operating handle 302 are gripped, the operating handle 302 swings towards the grip portion 301 about the hinge shaft 10, and the linkage rod 9 pulls the movable blade 102 to complete the shearing action of the backward hook shears.

For convenience of operation, an elastic member 8, such as a spring or an elastic spring, is preferably disposed between the grip portion 301 and the operating handle 302, so that the grip portion 301 and the operating handle 302 always have a restoring elastic force separated from each other.

As shown in fig. 4, when the hook shear of the present invention works, the operating handle 302 is first pinched to swing the operating handle 302 to the grip portion 301 around the hinge shaft 10, the movable blade 102 of the linkage rod 9 is pulled to close the cutting edge portion 1, and then the end of the hook shear is moved to the target operation area. The operating handle 302 is loosened, the movable blade 102 rotates reversely to open the cutting edge, and then the fixed soft needle 4 is driven by the soft wire driving and locking mechanism, for example, the driving nut 5 is rotated to push the fixed soft needle 4 to slide forwards, so that the end of the movable blade 102 extends out to pierce into a target tissue, thereby achieving the purpose of fixing the tissue. After the target tissue is fixed, the operating lever 302 is pinched again to swing the operating lever 302 toward the grip portion 301 about the hinge shaft 10, and the movable blade 102 is pulled by the link lever 9 to close the cutting edge portion 1, thereby completing the cutting operation of the backward hook scissors.

The above examples are merely examples for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. It is not necessary or necessary to exhaustively enumerate all embodiments herein, and obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. The utility model provides a hook shear, includes cutting edge portion, body and handle portion, cutting edge portion sets up at the body front end, and handle portion sets up the rear end at the body, its characterized in that: the hook shear is also provided with a metal fixed soft needle, the body is a bar-shaped component, the cutting edge part comprises a fixed blade and a movable blade, the handle part comprises a holding part and an operating handle, the fixed blade is fixed at the front end of the body, the front end of the movable blade and the front end of the fixed blade are hinged to form a shearing structure, and the front end of the movable blade is provided with a barb; the hook shear is provided with a soft wire channel and a soft wire driving and locking mechanism from the rear end of the body to the front end of the movable blade barb, the fixed soft needle is arranged in the soft wire channel in a clearance fit mode, the operating handle is hinged to the body, a linkage mechanism is arranged between the operating handle and the movable blade, and the operating handle is controlled through the linkage mechanism to enable the movable blade to perform shearing action.

2. A hook shear according to claim 1, wherein: the body is provided with pore channels from the rear end to the front end and in the movable blade to form the soft wire channel.

3. A hook shear according to claim 2, wherein: the soft thread driving and locking mechanism is characterized in that a driving nut is axially positioned and circumferentially and rotatably arranged on the soft thread channel, a section of driving screw is arranged on the fixed soft needle, and the driving screw and the driving nut are mutually in threaded fit to form the soft thread driving and locking mechanism.

4. A hook shear according to claim 2, wherein: one side of the soft wire channel is provided with an eccentric wheel containing cavity, the side face of the part of the eccentric wheel containing cavity is communicated with the soft wire channel, an eccentric wheel is rotatably arranged in the eccentric wheel containing cavity, and the rear end of the fixed soft needle is provided with a limiting block to form the soft wire driving and locking mechanism.

5. A hook shear according to claim 1, wherein: the body is further provided with a through hole which is through from front to back, a linkage rod is arranged in the through hole in a penetrating and matching mode, the operating handle is hinged to the position near the rear end of the through hole, and the two ends of the linkage rod are respectively movably hinged to the movable blade and the operating handle to form the linkage mechanism.

6. A hook shear according to any of claims 1 to 5, wherein: an elastic piece is arranged between the holding part and the operating handle, so that the holding part and the operating handle always have mutually separated reset elastic force.