CN218220273U

CN218220273U - Surgical knife

Info

Publication number: CN218220273U
Application number: CN202220447606.XU
Authority: CN
Inventors: 杜瑞林; 毛建辉
Original assignee: Hangzhou Barty Medical Technology Co ltd
Current assignee: Hangzhou Barty Medical Technology Co ltd
Priority date: 2022-03-03
Filing date: 2022-03-03
Publication date: 2023-01-06
Anticipated expiration: 2032-03-03

Abstract

A surgical knife comprises a blade, a knife head and a knife handle, wherein the knife head comprises a blade mounting part and a knife handle connecting part, the blade mounting part comprises a picking end, an arc-shaped sheath and a knife handle butt joint seat, the picking end is connected to the front end of the arc-shaped sheath, the knife handle butt joint seat is connected to the rear end of the arc-shaped sheath, and the arc-shaped sheath covers the blade in a half way so that the blade is only exposed out of one side of the arc-shaped sheath; the front end of the knife handle is provided with a hole and forms a clamping groove, the knife handle connecting part is clamped in the clamping groove, and the knife handle butt joint seat is matched and abutted with the front end of the knife handle. The utility model discloses compare in traditional scalpel, further optimize installation and operation, shorten the operation time, improve the operation effect, improve operation efficiency, realize the part reutilization, be worth using widely in this area.

Description

Surgical knife

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a surgical scalpel.

Background

The traditional common surgical knife is characterized in that a universal scalpel blade is inserted into the front end of a flat strip-shaped knife handle, and the specific blade mounting and dismounting method comprises the following steps: when the blade is installed, the blood vessel forceps are used for clamping the back side of the front end of the blade, and the blade is slowly and forcibly jointed with the groove of the knife handle in a relative mode; when the blade is disassembled, the back side of the tail end of the blade is clamped by the vascular forceps, and the blade is lifted up slowly and pushed out of the groove of the handle. The conventional surgical knife has the following problems in use: 1) When the blade and the knife handle are installed, an assembly gap exists, so that the blade can move and be dislocated during surgical cutting, and the cut is irregular and difficult to suture; 2) The tissue is difficult to be picked and cut only by the blade, and other instruments are needed to be used for matching, so that the operation time is relatively increased, and the operation progress is influenced; 3) The back of the blade is in direct contact with surrounding tissue and is prone to damage to surrounding tissue when cutting the tissue. Chinese utility model patent with application number CN201821764816.1 discloses a be used for hepatobiliary surgery to use scalpel, including the scalpel head, the scalpel head right-hand member is provided with the fixed block, the fixed slot has been seted up in the fixed block, be provided with the blade in the fixed slot, the mounting groove has been seted up in the middle of the blade, the blade is connected with the fixed block through the mounting groove, the draw-in groove has been seted up to the scalpel head left end, scalpel head left side is connected with the scalpel handle, scalpel handle right-hand member is provided with the first buckle with draw-in groove assorted, the scalpel handle is connected with the scalpel head through first buckle, first recess and second recess have been seted up to the scalpel handle left end, the second recess sets up in the first recess outside, scalpel handle left side is connected with the connecting block, the fixed cardboard that is provided with in connecting block right side, cardboard and second recess phase-match, the connecting block is connected with the scalpel handle through the cardboard, and its be convenient for hang and grip, but its structure is complicated, and the dismouting is loaded down with trivial details, easily has the fit-up gap that easily makes the blade aversion, also can's cutting of independent tissue still be wounded to the tissue that does not need not cut easily.

Disclosure of Invention

A technical object of the utility model is to provide a surgical knife solves the problem that exists among the prior art.

The utility model discloses a concrete technical scheme as follows: a surgical knife comprises a blade, a knife head and a knife handle, wherein the knife head comprises a blade mounting part and a knife handle connecting part, the blade mounting part comprises a picking end, an arc-shaped sheath and a knife handle butt joint seat, the picking end is connected to the front end of the arc-shaped sheath, the knife handle butt joint seat is connected to the rear end of the arc-shaped sheath, and the arc-shaped sheath covers the blade in a half way so that the blade is only exposed out of one side of the arc-shaped sheath; the front end of the knife handle is provided with a hole and forms a clamping groove, the knife handle connecting part is clamped in the clamping groove, and the knife handle butt joint seat is matched and abutted with the front end of the knife handle.

Preferably, the top surface of the knife handle is also provided with an opening communicated with the clamping groove; the utility model discloses a handle of a knife, including handle of a knife connecting portion, handle of a knife connecting portion include the chucking part and can kick-back press part, the chucking part with handle of a knife butt joint seat adjoins, the chucking part with draw-in groove interference fit and fixed, can kick-back press part stretch into in the draw-in groove and quilt the draw-in groove inner wall oppression is relative handle of a knife connecting portion bending deformation is until followed kick-back in the opening, can kick-back press part be close to the one side of chucking part with the open-ended is close to one side of the front end of handle of a knife is equipped with the spacing contact surface that offsets respectively and pastes.

Preferably, the holder connecting portion further includes a notch portion between the clamping portion and the resiliently depressible portion.

Preferably, the thickness and/or width of the clamping part gradually decreases from the position close to the tool holder butt-joint seat to the position far away from the tool holder butt-joint seat, and the maximum thickness and/or width of the clamping part is smaller than the maximum thickness and/or width of the clamping groove.

Preferably, the thickness and/or width of the clamping groove is gradually reduced in a direction from the front end of the tool handle to the front end far away from the tool handle in cooperation with the clamping part.

Preferably, the clamping part is provided with an inclined clamping rib, and the clamping groove is internally provided with an inclined clamping surface matched with the clamping rib.

Preferably, the resilient pressing portion is provided with a pressing force application area for matching with a finger pad.

Preferably, press-fit concave surfaces are arranged on two opposite edges of the opening in the long axis direction of the knife handle.

Preferably, the tool handle is provided with scale marks along the long axis direction.

Preferably, the picking end circle is passivated.

The technical advantages of the utility model reside in that surgical knife simple structure, convenient to use, the blade quilt the half cladding ground of handle of a knife installation department is encapsulated, the blade is in the cutting, utilizes arc sheath avoids its back direct and human tissue contact to cause the accidental injury, and utilizes it can conveniently realize choosing the end in step from the cutting to choose, handle of a knife connecting portion with handle of a knife joint, stable in connection is firm, and easy dismounting is swift, just the blade the tool bit, the equal free change combination of handle of a knife and reuse, so surgical knife compares in traditional scalpel, further optimizes installation and operation, shortens operating time, improves the operation effect, improves operation efficiency, realizes part reutilization, is worth using widely in this area.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

fig. 2 is a schematic partial structure diagram of an embodiment of the present invention;

fig. 3 is a schematic partial structure diagram of an embodiment of the present invention;

the names of the parts corresponding to the numbers in the figure are respectively as follows: 1-blade, 2-tool bit, 21-blade mounting part, 211-picking end, 212-arc sheath, 213-tool handle butt joint seat, 22-tool handle connecting part, 221-clamping part, 222-reboundable pressing part, 2221-pressing force application area, 223-gap part, 3-tool handle, 31-clamping groove, 32-opening, 321-pressing matching concave surface and 33-scale mark.

Detailed Description

The invention will be further explained by means of specific embodiments with reference to the drawings, in which:

referring to fig. 1, 2 and 3, an embodiment of a surgical scalpel comprises a blade 1, a scalpel head 2 and a scalpel handle 3, wherein the scalpel head 2 comprises a blade mounting portion 21 and a scalpel handle connecting portion 22, the blade 1 can adopt a universal scalpel blade, a scale mark 33 is arranged on the scalpel handle 3 along the long axis direction of the scalpel handle, the scale mark can be arranged in a centimeter unit, and the scalpel handle 3 is oval with variable diameters in shape and is easy to hold.

Blade installation department 21 is including choosing end 211, arc sheath 212 and handle of a knife butt joint seat 213, chooses end 211 to connect in the front end of arc sheath 212, chooses end 211 circle passivation, conveniently chooses from the operation, also is difficult for the mistake damage tissue. The arc-shaped sheath 212 can be considered as a crescent shape, the arc-shaped sheath 212 semi-covers the blade 1 therein to expose the blade 1 on only one side of the arc-shaped sheath 212, and the blade 1 and the cutter head 2 can be integrally molded to load the blade 1 in the arc-shaped sheath 212. The handle docking seat 213 is connected to the rear end of the arc-shaped sheath 212, and the handle docking seat 213 is fitted and attached to the front end of the handle 3. The picking end 211, the arc sheath 212 and the handle docking seat 213 can also be formed by an integral injection molding process.

The front end of the handle 3 is provided with a hole and forms a clamping groove 31, and the handle connecting part 22 is clamped in the clamping groove. The top surface of the holder 3 is further provided with an opening 32 communicating with the catching groove 31, and the holder connecting portion 22 includes a catching portion 221, a resiliently depressible portion 222, and a notch portion 223 between the catching portion 221 and the resiliently depressible portion 222. The clamping part 221 is adjacent to the tool holder abutting seat 213, the clamping part 221 is fixed with the clamping groove 31 in an interference fit manner, the reboundable pressing part 222 extends into the clamping groove 31 and is pressed by the inner wall of the clamping groove 31 to be bent and deformed relative to the tool holder connecting part 22 until rebounding from the opening 32, and one side of the reboundable pressing part 222 close to the clamping part 221 and one side of the opening 32 close to the front end of the tool holder 3 are respectively provided with abutting limiting contact surfaces.

In this embodiment, the clamping part 221 is provided with an inclined clamping rib, and the clamping groove 31 is provided with an inclined clamping surface matched with the clamping rib, as can be seen from the figure, the clamping rib is only arranged on the upper and lower surfaces of the clamping part 221, and it can be understood that the thickness of the clamping part 221 is gradually reduced from the direction close to the handle butting seat 213 to the direction far away from the handle butting seat 213; accordingly, the clamping surfaces are also provided on the upper and lower inner walls of the clamping groove 31, and it can be understood that the thickness of the clamping groove 31 is gradually reduced in cooperation with the clamping part 221 in a direction from near to far from the front end of the holder 3. The maximum thickness of the clamping part 221 is smaller than that of the clamping groove 31, and when the tool shank connecting part 22 is completely clamped into the clamping groove, the clamping part 221 and the clamping groove 31 are in interference fit. Of course, for the purpose of interference fit, in addition to the thickness of the clamping part 221 and the slot 31, the width of the clamping part and the slot may be set correspondingly, or both the thickness and the width of the clamping part and the slot may be set correspondingly.

The resilient pressing portion 222 is deformable and bendable with respect to the clamping portion 221, and when it extends into the engaging groove 31 and does not reach the opening 32, it is pressed downward by the inner wall of the engaging groove 31 (with respect to the surface of the handle 3 where the opening 32 is located being the upper surface), until it completely extends into the lower side of the opening 32, and because it is no longer pressed by the inner wall of the engaging groove 31, it automatically returns to its original position and tilts upward into the opening 32, and its front side abuts against the front side edge of the opening 32, so as to limit and fix the resilient pressing portion 222 or the handle connecting portion 22 or the entire tool bit 2.

The notch 223 is provided to facilitate relative bending of the resiliently depressible portions 222, and the notch 223 is shown in a "V" shape.

In order to realize that the reboundable pressing part 222 can be pressed and deformed by the inner wall of the slot 31, there may be a plurality of setting modes for the handle connecting part 22 and the slot 31, for example, the clamping part 221 and the reboundable pressing part 222 may not be on the same straight plane, both may be in a "V" shape as the notch part 223, except for the thickness and/or width of the slot 31, which is matched with the clamping part 221, the horizontal central section of the slot 31 may be a straight plane or a folded plane having an included angle greater than the included angle formed by the clamping part 221 and the reboundable pressing part 222, and other similar related settings capable of achieving the purpose of pressing the reboundable pressing part 22 first and then rebounding into the opening 32 are not described herein again.

Further, the resilient pressing portion 222 is provided with a pressing force application area 2221 for engaging with the finger pad, and may be in the form of a protrusion or a recess, in this case, a recess. Press-fitting concave surfaces 321 are provided on opposite edges of the opening 32 in the long axis direction of the holder 3, which facilitates smooth and comfortable contact of the fingers with the holder 3 even when the resiliently-depressible portion 222 is depressed.

The operating method of the scalpel is as follows: when the tool bit is installed, the tool bit 21 can be held on the tool holder abutting seat 213 by the left hand, the tool holder 3 is held by the right hand, then the tool holder connecting part 22 of the tool bit 21 is aligned with the clamping groove 31 of the tool holder 3 and pushed in until the reboundable pressing part 222 reaches the opening 32 and rebounds into the opening 32, the clicking sound can be heard, the reboundable pressing part 222 and the opening 32 are hooked mutually to limit and fix, and at the moment, the clamping part 221 is also clamped and fixed with the clamping groove 31; when the tool holder is detached, the tool holder 3 can be held by the right hand, the pressing force application area 2221 is pressed downwards by the thumb and then pushed forwards, and the tool bit 2 is pulled by the left hand until the whole tool holder connecting part 22 is out of the clamping groove 31.

This scalpel can realize assembling and dismantling conveniently, the tool bit 2 and the handle of a knife 3 that load blade 1 can carry out the reutilization for mutually independent part, both combine firmly, stable in use, blade 1 is when normal use allowed in the setting up of the arc sheath 212 of tool bit 2, also prevent the back of blade 1 from injuring the tissue by mistake, it can carry out the operation of choosing from the tissue in operation in-process in step to choose end 211, compare in traditional scalpel, the operation has generally been simplified to this scalpel, the efficiency of the operation is improved, the operation effect is improved, the use cost is reduced, and the function is comprehensive, safety and reliability.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The purpose of the utility model is completely and effectively realized. The functional and structural principles of the present invention have been shown and described in the embodiments, and the embodiments of the present invention can be modified or altered without departing from the principles.

Claims

1. A surgical knife comprises a blade (1), a knife head (2) and a knife handle (3), and is characterized in that: the cutter head (2) comprises a blade mounting part (21) and a cutter handle connecting part (22), the blade mounting part (21) comprises a picking end (211), an arc-shaped sheath (212) and a cutter handle butt joint seat (213), the picking end (211) is connected to the front end of the arc-shaped sheath (212), the cutter handle butt joint seat (213) is connected to the rear end of the arc-shaped sheath (212), and the arc-shaped sheath (212) is used for semi-wrapping the blade (1) in the arc-shaped sheath so that the blade (1) is only exposed out of one side of the arc-shaped sheath (212); the front end of the knife handle (3) is provided with a hole and forms a clamping groove (31), the knife handle connecting part (22) is clamped in the clamping groove, and the knife handle butt joint seat (213) is matched with and abuts against the front end of the knife handle (3).

2. A surgical knife according to claim 1, wherein: an opening (32) communicated with the clamping groove (31) is further formed in the top surface of the cutter handle (3); the knife handle connecting part (22) comprises a clamping part (221) and a rebounding pressing part (222), the clamping part (221) is abutted to the knife handle abutting seat (213), the clamping part (221) is in interference fit with the clamping groove (31) and fixed, the rebounding pressing part (222) extends into the clamping groove (31) and is pressed by the inner wall of the clamping groove (31) to be relatively bent and deformed until rebounding from the opening (32) through the bending deformation of the knife handle connecting part (22), and one side, close to the clamping part (221), of the rebounding pressing part (222) and one side, close to the front end of the knife handle (3), of the opening (32) are respectively provided with abutted limiting contact surfaces.

3. A surgical knife according to claim 2, in which: the handle connecting portion (22) further includes a notch portion (223) between the chucking portion (221) and the resiliently depressible portion (222).

4. A surgical knife according to claim 2, in which: the thickness and/or the width of the clamping part (221) gradually decrease from the direction close to the tool handle butt joint seat (213) to the direction far away from the tool handle butt joint seat (213), and the maximum thickness and/or the width of the clamping part (221) are smaller than the maximum thickness and/or the width of the clamping groove (31).

5. A surgical knife according to claim 4, in which: the thickness and/or the width of the clamping groove (31) is/are gradually reduced in a manner of being matched with the clamping part (221) from the direction close to the front end of the cutter handle (3) to the direction far away from the front end of the cutter handle (3).

6. A surgical knife according to claim 4 or claim 5, in which: the clamping part (221) is provided with an inclined clamping rib, and the clamping groove (31) is internally provided with an inclined clamping surface matched with the clamping rib.

7. A surgical knife according to claim 2, wherein: the reboundable pressing part (222) is provided with a pressing force application area (2221) for matching with a finger pad.

8. A surgical knife according to claim 2, wherein: and press fit concave surfaces (321) are arranged on two opposite edges of the opening (32) in the long axis direction of the cutter handle (3).

9. A surgical knife according to claim 1, wherein: and the tool handle (3) is provided with scale marks (33) along the long axis direction.

10. A surgical knife according to claim 1, wherein: and passivating the picking end (211) in a round way.