CN107028644B

CN107028644B - Lockable safety knife handle assembly structure

Info

Publication number: CN107028644B
Application number: CN201710320542.0A
Authority: CN
Inventors: 陈亮; 周维佳
Original assignee: Huaian Tianda Medical Instruments Co ltd
Current assignee: Huaian Tianda Medical Instruments Co ltd
Priority date: 2017-05-09
Filing date: 2017-05-09
Publication date: 2023-03-21
Anticipated expiration: 2037-05-09
Also published as: CN107028644A

Abstract

The invention discloses a lockable safety knife handle assembly structure, which is characterized in that: the safety knife handle comprises a knife handle body (1) and a hollow sheath (2) arranged on one side of a blade seat of the knife handle body (1), a lock catch (21) is arranged on the hollow sheath (2), a guide rail type sliding groove (3) matched with the lock catch (21) is arranged at a corresponding position of the knife handle body (1), and the knife handle body (1) is matched and clamped with the lock catch (21) arranged on the hollow sheath (2) through the guide rail type sliding groove (3) arranged on the knife handle body; the invention not only effectively solves the problem that the safety of the traditional sheath type safety knife is difficult to solve in the using process, but also effectively solves the problem that the operation of a patient is painful and infected by the traditional sheath type safety knife in the using process.

Description

Lockable safety knife handle assembly structure

Technical Field

The invention relates to the technical field of medical instruments, in particular to a lockable safety knife handle assembly structure.

Background

The scalpel is one of the necessary tools for doctors to perform surgical operations, and the safety performance of the scalpel affects the operation quality of doctors and is also very important for doctors and patients. Conventional scalpels are generally of two types: one is a steel handle scalpel, and the other is a plastic handle scalpel. The plastic handle scalpel mainly comprises a disposable blade and a disposable plastic handle, wherein a blade seat is arranged at the front part of the plastic handle, and the blade is arranged on the blade seat. The steel handle scalpel mainly comprises a disposable blade and a non-disposable steel handle, the blade needs to be installed on the scalpel handle before use, the blade is removed from the scalpel handle after use, and the scalpel handle needs to be sterilized before use. Either plastic or steel handle scalpels suffer potential damage from exposed blades or contamination from blood on the blade.

The safety of the safety knife is concerned more and more, in order to improve the safety performance of the scalpel, the existing safety knife generally adopts a sheath mode, for example, the U.S. patent with the patent number of US6626925B2 discloses an invention patent of a surgical knife with a protective sheath, which belongs to a plastic-handle scalpel with a protective sheath, the sliding-sleeve type surgical scalpel adopting the protective sheath structure solves the safety problem caused by the fact that the knife edge is exposed outside in the prior art, but does not fundamentally and completely solve the safety problem of reuse of the scalpel, the existing Chinese invention patent has the patent application number of 201610816550X and the name of a sheath type disposable safety scalpel, solves the safety problem of reuse, but has an important problem that the position of the sheath on a handle of the scalpel is positioned in a mode of extending and retracting of the handle of the sheath on the handle of the scalpel, the problem of serious scratch is caused in the using process, firstly, the sheath is integrated with the handle of the knife, the handle of the scalpel retracts on the handle of the scalpel in the using process, a surgeon needs to extend into the space of the sheath to be connected with a patient, the sheath, the surgical scalpel, the operation is difficult to increase the operation cost of the patient, and the operation cost is increased in the operation process of the patient, so that the patient is increased.

Disclosure of Invention

The invention provides a lockable safety knife handle assembly structure, which not only effectively solves the problem that the safety of the traditional sheath type safety knife during the use process is difficult to solve, but also effectively solves the problem that the existing sheath type safety knife can increase pain and infection risks to the operation of a patient during the use process.

The invention is realized by the following technical scheme:

the utility model provides a but locking formula safety handle of a knife subassembly structure which characterized in that: the safety knife handle comprises a knife handle body (1) and a hollow sheath (2) arranged on one side of a blade seat of the knife handle body (1), wherein a lock catch (21) is arranged on the hollow sheath (2), a guide rail type sliding groove (3) matched with the lock catch (21) is arranged at a corresponding position of the knife handle body (1), the knife handle body (1) is matched and clamped with the lock catch (21) arranged on the hollow sheath (2) through the guide rail type sliding groove (3) arranged on the knife handle body, a pushing part A (4) is arranged on one side of the blade seat along the length direction of the knife handle body (1), the guide rail type sliding groove (3) is symmetrically arranged on two sides of the pushing part A (4), a convex rib (31) is arranged in the middle of the guide rail type sliding groove (3), the guide rail type sliding groove (3) is sequentially divided into a clamping groove (32) and a locking groove (33) along the advancing direction by the convex rib (31), an arc-shaped transition surface (34) is formed on one side of the surface of the convex rib (31) and the bottom surface of the guide rail type sliding groove (3), and an occlusion surface (35) is formed on the opposite side of the bottom surface of the guide rail type sliding groove (3).

The invention further adopts the technical improvement scheme that:

the hollow sheath (2) comprises an open end (22) and a closed end (23), a buffer notch (24) is formed between the open end (22) and the closed end (23), the open end (22) and the closed end (23) on two sides of the buffer notch (24) are connected through a protruding connecting portion (5), the inner sides of the middle portions of the protruding connecting portion (5) are symmetrically provided with lock catches (21), the opposite ends are provided with pushing portions B (51), the bottom of the inner side of the closed end (23) is provided with a limiting guide rail (25), and the limiting guide rail (25) is connected with the bottom of the handle body (1) in a matched mode.

The invention further adopts the technical improvement scheme that:

the joint of the knife handle body (1) and the hollow sheath (2) is provided with a plurality of strip-shaped ventilating grooves (11) which are transversely, obliquely or longitudinally arranged.

The invention further adopts the technical improvement scheme that:

the lock catch (21) is a group of cylindrical bulges which are oppositely arranged.

The invention further adopts the technical improvement scheme that:

the hollow sheath (2) is made of a transparent PP material, and the knife handle body (1) is made of an ABS material.

The invention further adopts the technical improvement scheme that:

the height of the convex rib (31) is lower than that of the guide rail type sliding chute (3).

The invention further adopts the technical improvement scheme that:

and a ventilation through hole (26) is formed in the side surface of the closed end (23).

Compared with the prior art, the invention has the following obvious advantages:

1. the knife handle body and the hollow sheath are clamped through the guide rail type sliding groove and are sequentially divided into the clamping groove and the locking groove along the advancing direction, before the knife handle body is not used, the lock catch of the hollow sheath is positioned in the clamping groove, after the knife handle body is used, the lock catch of the hollow sheath is directly pushed into the locking groove, the surface of the clamping groove is an arc transition surface, the surface of the locking groove is an occlusal surface, the sheath and the knife handle body are tightly locked together and cannot be pulled out again, and therefore the use safety of a surgical knife is guaranteed;

2. the buffer notch is arranged between the open end and the closed end of the hollow sheath, so that the force required by the hollow sheath and the handle body in an interlocking state can be obviously reduced, and the hollow sheath is convenient to use in an operation.

3. According to the invention, the limiting guide rail is arranged at the bottom of the inner side of the hollow sheath, and the limiting guide rail is matched and clamped with the bottom of the handle body, so that the handle moves along the direction of the limiting guide rail in the handle locking process of the sheath, and the safety performance of the handle in the blade assembling state is improved.

4. The long-strip-shaped ventilation groove is formed in the joint of the cutter handle body and the hollow sheath, and the ventilation through hole is formed in the side face of the closed end, so that the problem that the sheath is difficult to pull out due to negative pressure formed in the sheath in the assembling or process of the sheath and the cutter handle is solved, and convenience in use is provided.

5. The push part A and the push part B are respectively arranged on the knife handle body and the hollow sheath, and both can assist a user to quickly open and lock the sheath and the handle in the use process.

6. The invention has simple structure and low cost, and is convenient for large-scale popularization and use.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the hollow sheath of the present invention;

FIG. 3 is a schematic view of the structure of the tool shank body of the present invention;

FIG. 4 is a schematic view of a clamping state structure of the present invention;

FIG. 5 is a cross-sectional view of the clamping state of the present invention;

FIG. 6 is a schematic view of the locking state structure of the present invention

Fig. 7 is a cross-sectional view of the locked state of the present invention.

Detailed Description

The technical solution of the present invention is explained below with reference to the accompanying drawings.

As shown in the attached figures 1-7, the invention comprises a knife handle body 1 and a hollow sheath 2 arranged at one side of a blade seat of the knife handle body 1, a lock catch 21 is arranged on the hollow sheath 2, a guide rail type sliding groove 3 matched with the lock catch 21 is arranged at the corresponding position of the knife handle body 1, the knife handle body 1 is matched and clamped with the lock catch 21 arranged on the hollow sheath 2 through the guide rail type sliding groove 3 arranged on the knife handle body, the lock catch 21 is a group of cylindrical bulges arranged oppositely, a pushing part A4 is arranged at one side of the blade seat along the length direction of the knife handle body 1, the guide rail type sliding grooves 3 are symmetrically arranged at two sides of the pushing part A4, a convex rib 31 is arranged at the middle part of the guide rail type sliding groove 3, the convex rib 31 sequentially divides the guide rail type sliding groove 3 into a clamping groove 32 and a locking groove 33 along the advancing direction, the height of the convex rib 31 is lower than that of the guide rail type sliding groove 3, an arc transition surface 34 is formed between one side surface of the convex rib 31 and the bottom surface of the guide rail type sliding groove 3, the opposite side surface and the bottom surface of the guide rail type sliding groove 3 form an occlusal surface 35, the hollow sheath 2 comprises an open end 22 and a closed end 23, a buffer notch 24 is arranged between the open end 22 and the closed end 23, the open end 22 and the closed end 23 on two sides of the buffer notch 24 are connected through a convex connecting part 5, the inner side of the bottom of one end of the convex connecting part 5 is symmetrically provided with a lock catch 21, the opposite end is provided with a pushing part B51, the inner side bottom of the closed end 23 is provided with a limit guide rail 25, the side surface of the closed end 23 is provided with a ventilation through hole 26, the side surfaces on two sides of the closed end 23 are also symmetrically provided with a recess 231, an anti-skid convex rib 232 is arranged in the recess, the limit guide rail 25 is matched and clamped with the bottom of the handle body 1, and the joint of the handle body 1 and the hollow sheath 2 is provided with a plurality of transverse, or oblique or longitudinal strip-shaped ventilation grooves 11.

The working process of the invention is further explained by combining the attached drawings

Before the invention is used, the lock catch 21 of the hollow sheath 2 is matched and clamped with the clamping groove 32 of the guide rail type sliding groove 3 of the handle body 1, when the operation is started, the hollow sheath 2 is pulled out through symmetrically arranging the depressions 231 on the side surfaces of the two sides of the closed end 23, after the operation is finished, a user acts oppositely through the pushing part A4 and the pushing part B51, the limit guide rail 25 arranged at the bottom of the inner side of the closed end 23 of the hollow sheath 2 is inserted into one side of the handle body 1 provided with the blade seat, and the lock catch 21 of the hollow sheath 2 slides into the occlusal surface 35 of the locking groove 33 through the arc transition surface 34 of the clamping groove 32, so that the interlocking state of the hollow sheath 2 and the handle body 1 is formed.

The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.

Claims

1. The utility model provides a lockable safe handle of a knife subassembly structure which characterized in that: the safety knife handle comprises a knife handle body (1) and a hollow sheath (2) arranged on one side of a blade seat of the knife handle body (1), wherein a lock catch (21) is arranged on the hollow sheath (2), a guide rail type sliding groove (3) matched with the lock catch (21) is arranged in a corresponding position of the knife handle body (1), the knife handle body (1) is matched and clamped with the lock catch (21) arranged on the hollow sheath (2) through the guide rail type sliding groove (3) arranged on the knife handle body, a pushing part A (4) is arranged on one side of the blade seat along the length direction of the knife handle body (1), the guide rail type sliding groove (3) is symmetrically arranged on two sides of the pushing part A (4), a convex rib (31) is arranged in the middle of the guide rail type sliding groove (3), the convex rib (31) sequentially divides the guide rail type sliding groove (3) into a clamping groove (32) and a locking groove (33) along the advancing direction, an arc-shaped transition surface (34) is formed on one side of the bottom surface of the convex rib (31) and the guide rail type sliding groove (3), an occlusion surface (35) is formed on the bottom surface of the guide rail type sliding groove (3), the hollow sliding groove (35) before the hollow sheath is not used, the arc-shaped transition surface of the sheath, and the hollow sheath is pulled out of the locking groove, and the locking groove is directly pushed out of the locking groove, and the locking groove.

2. The lockable safety handle assembly as defined in claim 1, wherein: the hollow sheath (2) comprises an open end (22) and a closed end (23), a buffer notch (24) is formed between the open end (22) and the closed end (23), the open end (22) and the closed end (23) on two sides of the buffer notch (24) are connected through a protruding connecting portion (5), the inner sides of the middle portions of the protruding connecting portion (5) are symmetrically provided with lock catches (21), the opposite ends are provided with pushing portions B (51), the bottom of the inner side of the closed end (23) is provided with a limiting guide rail (25), and the limiting guide rail (25) is connected with the bottom of the handle body (1) in a matched mode.

3. A lockable safety handle assembly arrangement according to claim 1 or 2, characterised in that: the joint of the knife handle body (1) and the hollow sheath (2) is provided with a plurality of strip-shaped ventilating grooves (11) which are transversely, obliquely or longitudinally arranged.

4. A lockable safety handle assembly arrangement according to claim 1 or 2, characterised in that: the lock catch (21) is a group of cylindrical bulges which are oppositely arranged.

5. A lockable safety handle assembly arrangement according to claim 1 or 2, characterised in that: the hollow sheath (2) is made of a transparent PP material, and the knife handle body (1) is made of an ABS material.

6. The lockable safety handle assembly as defined in claim 2, wherein: the height of the convex rib (31) is lower than that of the guide rail type sliding groove (3).

7. The lockable safety handle assembly as defined in claim 2, wherein: and a ventilation through hole (26) is formed in the side surface of the closed end (23).