CN108247685B

CN108247685B - Medical safety scissors

Info

Publication number: CN108247685B
Application number: CN201810276253.XA
Authority: CN
Inventors: 刘丹; 兰玲
Original assignee: First Affiliated Hospital of Medical College of Xian Jiaotong University
Current assignee: First Affiliated Hospital of Medical College of Xian Jiaotong University
Priority date: 2018-03-30
Filing date: 2018-03-30
Publication date: 2020-11-13
Anticipated expiration: 2038-03-30
Also published as: CN108247685A

Abstract

The invention relates to medical safety scissors, which comprise an upper forceps body, a lower grab handle and an upper grab handle, wherein the upper forceps body is hinged with the right end of the lower forceps body; the upper plier body is provided with a blade which can slide along the length direction of the upper plier body, the edge part of the blade is opposite to the lower plier body, the edge part of the blade is obliquely arranged, the lower plier body is provided with a abdicating groove, and the lower end of the edge part of the blade is arranged in the abdicating groove; the upper clamp body assembly is provided with a cavity which is consistent with the length direction of the upper clamp body, the upper clamp body assembly is provided with a first belt pulley arranged at the left end of the cavity and a second belt pulley arranged at the right end of the cavity, the first belt pulley and the second belt pulley are in transmission connection through a belt, and the blade is connected with the belt; the lower grab handle is provided with a gear which is coaxially connected with the second belt pulley, the upper grab handle is provided with a pressure lever which is arranged below the upper grab handle, and the pressure lever is provided with an arc-shaped inner rack which is meshed with the gear.

Description

Medical safety scissors

Technical Field

The invention relates to the field of medical supplies, in particular to a pair of medical safety scissors.

Background

The scissors are widely used in various medical links as common medical instruments, and the common scissors can meet the use requirements to a certain extent at present, but still have a plurality of defects.

The scissors are commonly used for cutting threads, gauzes, bandages or removing threads and the like, when the gauze, the bandages or similar medical products with sheet structures are cut by the existing scissors, the cut is irregular due to the fact that the existing scissors cannot be reliably positioned, and particularly, the irregular cut of the medical products woven by the gauzes or the bandages easily causes the thread ends at the cut part to be scattered or fall off, so that the medical products are inconvenient to use; in addition, when the stitches are removed, the sharp parts of the scissors need to be inserted into the bandage or the part of the gauze contacted with the body of the patient to cut, and the sharp parts of the scissors are usually sharp, so that the skin of the patient is easily scratched, and unnecessary trouble is brought to the patient.

Disclosure of Invention

Aiming at the situation, in order to make up for the technical defects in the prior art, the invention provides medical safety scissors, which are used for solving the problems of insufficient functions and low safety in the use process of the existing scissors.

The technical scheme for solving the problem is as follows: the clamp comprises an upper clamp body, a lower grab handle and an upper grab handle, wherein the upper clamp body, the lower clamp body and the upper grab handle are respectively horizontally arranged; the upper clamp body is hinged with the right end of the lower clamp body to form a jaw, the right end of the upper clamp body is connected with the left end of the lower grab handle to form an upper clamp body assembly, and the right end of the lower clamp body is hinged with the left end of the upper grab handle; the upper plier body is provided with a blade which can slide along the length direction of the upper plier body, the edge part of the blade is opposite to the lower plier body, the edge part of the blade is arranged in a left inclined way, the lower plier body is provided with a abdicating groove matched with the edge part of the blade, and the lower end of the edge part of the blade is arranged in the abdicating groove; the upper clamp body assembly is provided with a cavity which is consistent with the length direction of the upper clamp body, the upper clamp body assembly is provided with a rotatable first belt pulley arranged at the left end of the cavity and a rotatable second belt pulley arranged at the right end of the cavity, the first belt pulley and the second belt pulley are in transmission connection through a belt, the blade is connected with the lower belt strip of the belt, and when the belt generates transmission motion, the blade is driven by the belt to slide on the upper clamp body; the lower grab handle is provided with a gear coaxially connected with the second belt pulley, the upper grab handle is provided with a pressure lever arranged below the upper grab handle, and the pressure lever is provided with an arc-shaped inner rack meshed with the gear.

The invention has the advantages of exquisite structure and convenient and fast use, can realize effective positioning during shearing, ensures the orderliness of an incision, can effectively avoid secondary damage possibly occurring in the operation process of direct contact between stitches and patients, and the like, and greatly improves the use safety.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is an enlarged view of a portion a of fig. 1 according to the present invention.

Fig. 3 is a cross-sectional view B-B of the present invention.

Fig. 4 is an enlarged view of the portion C of fig. 3 according to the present invention.

Fig. 5 is an enlarged view of a portion D of fig. 3 according to the present invention.

Fig. 6 is an axial cross-sectional view of the present invention.

FIG. 7 is an isometric cross-sectional view of the jaws of the present invention as they are opened.

FIG. 8 is a front view of the lower plier body and upper grab handle of the invention hinged together.

Fig. 9 is an enlarged view of portion E of fig. 8 of the present invention.

FIG. 10 is a perspective view of the lower clamp body of the present invention hinged to the upper handle.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 10, the present invention includes an upper forceps body 1, a lower forceps body 2, a lower handle 3 and an upper handle 4 inclined to the right, wherein the upper forceps body 1 is disposed above the lower forceps body 2, and the lower handle 3 is disposed below the upper handle 4; the right end of the upper clamp body 1 is hinged with the right end of the lower clamp body 2 to form a jaw, the right end of the upper clamp body 1 is connected with the left end of the lower grab handle 3 to form an upper clamp body assembly, and the right end of the lower clamp body 2 is hinged with the left end of the upper grab handle 4; the upper pliers body 1 is provided with a blade 5 which can slide on the upper pliers body 1 along the length direction of the upper pliers body 1, the edge part of the blade 5 is opposite to the lower pliers body 2, the edge part of the blade 5 is arranged in a leftward inclined manner, the lower pliers body 2 is provided with a abdicating groove 6 matched with the edge part of the blade 5, and the lower end of the edge part of the blade 5 is arranged in the abdicating groove 6; the upper clamp body assembly is provided with a cavity 7 which is consistent with the length direction of the upper clamp body 1, the upper clamp body assembly is provided with a rotatable first belt pulley 8 arranged at the left end of the cavity 7 and a rotatable second belt pulley 9 arranged at the right end of the cavity 7, the first belt pulley 8 and the second belt pulley 9 are in transmission connection through a belt 10, the blade 5 is connected with a lower belt strip of the belt 10, and when the belt 10 generates transmission movement, the blade 5 is driven by the belt 10 to slide on the upper clamp body 1; the lower grab handle 3 is provided with a gear 11 which is coaxially connected with the second belt pulley 9, the upper grab handle 4 is provided with a pressure lever 12 which is arranged below the upper grab handle 4, and the pressure lever 12 is provided with an arc-shaped inner rack 13 which is meshed with the gear 11.

Preferably, the hinge portion between the lower forceps body 2 and the upper grip 4 is provided coaxially with the hinge portion between the upper forceps body 1 and the lower forceps body 2.

Preferably, the right end of the lower caliper body 2 is provided with a first hinged disk 14, the left end of the upper handle 4 is provided with a second hinged disk 15, the first hinged disk 14 is coaxially and rotatably connected with the second hinged disk 15, the first hinged disk 14 is provided with an arc chute 16 coaxially arranged with the first hinged disk 14, the second hinged disk 15 is provided with an arc slider 17 matched with the arc chute 16, the arc slider 17 is slidably arranged in the arc chute 16, the arc chute 16 is internally provided with a spring 18 which is arranged at the right side of the arc slider 17 and bends along the arc direction of the arc chute 16, one end of the spring 18 is connected with the arc slider 17, the other end of the spring 18 is connected with the first hinged disk 14, the elastic force of the spring 18 pushes the slider 17 to slide anticlockwise in the arc chute 16 and drives the upper handle 4 to rotate anticlockwise through the second hinged disk 15, so that when the jaw is opened and is not acted by external force, an included angle exists between the upper handle 4 and the lower caliper body 2, the elasticity of the spring 18 is enough to make the upper grab handle 4 drive the lower tong body 2 and the upper tong body 1 to rotate relatively.

Preferably, the arc direction of the arc-shaped inner rack 13 is arranged coaxially with the hinge part of the lower forceps body 2 and the upper grab handle 4.

The using method of the scissors is the same as that of the conventional scissors, the jaws are opened, the articles to be cut are placed at the jaws, and the cutting operation can be completed by tightly holding the upper grab handle 4 and the lower grab handle 3.

When an article is cut, the upper grab handle 4 and the lower grab handle 3 are tightly held to enable the upper grab handle 4 and the lower grab handle 3 to move close to each other, the lower grab handle 3 drives the upper clamp body 1 to move simultaneously, the upper grab handle 4 drives the lower clamp body 2 to move simultaneously under the elastic action of the spring 18, and the upper clamp body 1 is hinged with the lower clamp body 2, so that the upper clamp body 1 and the lower clamp body 2 rotate relatively around a hinged shaft of the upper clamp body and the lower clamp body to enable a jaw to be closed gradually; when the jaws are completely closed, articles are clamped by the jaws and cannot be dislocated, the upper grab handle 3 and the lower grab handle 4 are continuously gripped at the moment, due to the blocking effect formed by the closing of the jaws, the upper clamp body 1 and the lower clamp body 2 do not rotate any more, the upper grab handle 4 continuously rotates along the hinged part of the lower clamp body 2 and the upper grab handle 4, the included angle between the upper grab handle 4 and the lower clamp body 2 is changed, the arc-shaped sliding block 17 slides in the arc-shaped sliding groove 16 and compresses the spring 18, the elasticity is gradually increased after the spring 18 is compressed, and the elasticity acts on the lower clamp body 2 through the first hinged disc 14 to increase the clamping force of the jaws and further clamp the articles; in the process that the upper grab handle 4 continues to rotate, the pressure lever 12 rotates along with the pressure lever to enable the arc-shaped inner rack 13 to be meshed with the gear 11, so that the gear 11 rotates clockwise and drives the second belt pulley 9 to rotate simultaneously, and the first belt pulley 8 and the second belt pulley 9 rotate synchronously under the transmission action of the belt 10; since the belt 10 is driven by the belt to move on the first pulley 8 and the second pulley 9, the blade 5 slides on the upper caliper body 1 along with the movement of the belt, and the sliding of the blade 5 causes the edge of the blade 5 to gradually contact with the article and cut, thereby completing the cutting operation along with the article.

When the shearing is finished, reverse acting force is applied to the upper grab handle 4 and the lower grab handle 3 to enable the upper grab handle 4 and the lower grab handle 3 to be far away from each other, under the combined action of the acting force and the elastic force of the spring 18, the upper grab handle 4 generates resetting rotation and drives the pressing rod 12 to rotate simultaneously, under the meshing transmission action of the arc-shaped inner rack 13, the gear 11 rotates anticlockwise, the second belt pulley 9 and the first belt pulley 8 also rotate anticlockwise, and the belt 10 drives the blade 5 to reversely slide oppositely to finish the resetting of the blade 5.

When the cutting machine is used for cutting, the jaw clamps an article, and then the blade 5 starts to cut, so that the article is effectively positioned by the jaw, the cut after cutting is ensured to be tidy, the clamping and cutting operations are controlled by the lower grab handle 3 and the upper grab handle 4, other control mechanisms are not needed, and the convenience in use is ensured; meanwhile, when the cutter is used for cutting, the lower end of the edge part of the blade 5 is arranged in the abdicating groove 6, so that the edge is completely contacted with an article, one-time cutting can be ensured to be finished, and the condition that the local part cannot be cut can not be generated; in addition, since the lower jaw body 2 itself does not have a blade portion when the operation of removing the stitches is performed, when the lower jaw body 2 is inserted into a portion where gauze or a bandage is in contact with the body of a patient, secondary damage such as scratching or stinging is not caused to the body of the patient, and the safety in use is improved.

The knife blade is arranged in the jaw in a conventional state, so that the medical staff cannot be accidentally injured by grabbing the jaw in the taking process, and the knife blade has an obvious safety protection effect on frequent transmission operation of a knife in the operation process.

Claims

1. A medical safety scissors comprises an upper forceps body (1), a lower forceps body (2), a lower grab handle (3) and an upper grab handle (4), and is characterized in that the upper forceps body (1) is hinged with the right end of the lower forceps body (2), the right end of the upper forceps body (1) is connected with the left end of the lower grab handle (3) to form an upper forceps body assembly, and the right end of the lower forceps body (2) is hinged with the left end of the upper grab handle (4); the upper pliers body (1) is provided with a blade (5) which can slide along the length direction of the upper pliers body (1), the edge part of the blade (5) is opposite to the lower pliers body (2), the edge part of the blade (5) is obliquely arranged, the lower pliers body (2) is provided with a yielding groove (6) matched with the edge part of the blade (5), and the lower end of the edge part of the blade (5) is arranged in the yielding groove (6); the upper clamp body assembly is provided with a cavity (7) which is consistent with the length direction of the upper clamp body (1), the upper clamp body assembly is provided with a first belt pulley (8) arranged at the left end of the cavity (7) and a second belt pulley (9) arranged at the right end of the cavity (7), the first belt pulley (8) and the second belt pulley (9) are in transmission connection through a belt (10), and the blade (5) is connected with the belt (10); a gear (11) coaxially connected with the second belt pulley (9) is arranged on the lower grab handle (3), a pressure lever (12) arranged below the upper grab handle (4) is arranged on the upper grab handle (4), an arc-shaped inner rack (13) meshed with the gear (11) is arranged on the pressure lever (12), and the radian direction of the arc-shaped inner rack (13) is coaxially arranged with the hinged part of the lower clamp body (2) and the upper grab handle (4);

the right end of the lower clamp body (2) is provided with a first hinged disk (14), the left end of the upper grab handle (4) is provided with a second hinged disk (15), the first hinged disk (14) is coaxially connected with the second hinged disk (15), the first hinged disk (14) is provided with an arc-shaped sliding groove (16) which is coaxially arranged with the first hinged disk (14), the second hinged disk (15) is provided with an arc-shaped sliding block (17) matched with the arc-shaped sliding groove (16), the arc-shaped sliding block (17) is slidably arranged in the arc-shaped sliding groove (16), a spring (18) arranged on the right side of the arc-shaped sliding block (17) is arranged in the arc-shaped sliding groove (16), one end of the spring (18) is connected with the arc-shaped sliding block (17), and the other end of the spring (18) is connected with the first hinged disk; when the shearing is finished, reverse acting force is applied to the upper grab handle (4) and the lower grab handle (3) to enable the upper grab handle and the lower grab handle to be far away from each other, under the combined action of the acting force and the elastic force of the spring (18), the upper grab handle (4) generates resetting rotation and drives the pressing rod (12) to rotate simultaneously, under the meshing transmission action of the arc-shaped inner rack (13), the gear (11) rotates anticlockwise, the second belt pulley (9) and the first belt pulley (8) also rotate anticlockwise, the belt (10) drives the blade (5) to slide in the opposite direction, and resetting of the blade (5) is finished.

2. Medical safety scissors according to claim 1, characterized in that the hinge of the lower forceps body (2) and the upper handle (4) is coaxial with the hinge of the upper forceps body (1) and the lower forceps body (2).