CN219369172U - Pathological tissue sampling knife - Google Patents

Abstract

The utility model discloses a pathological tissue sampling knife, which comprises a knife handle, a knife rest and a knife blade, wherein the knife rest and the knife blade are arranged on the knife handle, a limiting protrusion is arranged on the side wall of the knife rest, a limiting hole for the insertion of the limiting protrusion is arranged on the knife blade, a threaded hole is formed in the limiting protrusion, a positioning screw is connected in the threaded hole in a threaded manner, when the knife blade is arranged, the outer wall of the limiting protrusion abuts against the inner wall of the limiting hole, and the knife blade is clamped between the knife rest and the end of the positioning screw.

Description

Pathological tissue sampling knife

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a pathological tissue sampling knife.

Background

Pathological tissue sampling is an important part in pathological section, slice preparation and diagnosis processes, and is also one of important reasons influencing diagnosis structures, and a pathological tissue sampling knife is often required to be used when pathological tissue sampling is carried out.

The use of the pathological sampling knife can improve the sampling efficiency of doctors.

At present, a sampling cutter widely used in the market is shown in fig. 1, and comprises a cutter holder body 101, wherein one side of the cutter holder body 101 is bent into a clamping part 102, and a clamping gap 103 for inserting a cutter blade 3 is formed between the clamping part 102 and the cutter holder body 101; in the use, in order to improve the stability of blade 3, clamping gap 103 is less, makes blade 3 have enough big clamping force to can cause the blade centre gripping too tight, the user need overcome the hindrance that clamping force brought when changing blade 3, be difficult to change.

When the blade cuts tissue with a slightly hard texture, the blade 3 is pressed, and the blade is easily caught in the clamping gap 103 between the clamping portion 102 and the holder body 101, thereby affecting the cutting of tissue.

Therefore, how to design a pathological tissue sampling knife is a technical problem to be solved by the person skilled in the art.

Disclosure of Invention

In order to solve at least one technical problem in the background art, the utility model aims to provide a pathological tissue sampling cutter which solves the problem that a cutter blade is not easy to replace because clamping force needs to be overcome when the cutter blade is replaced.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a pathological tissue sword of drawing materials, includes the handle of a knife, installs knife rest and blade on the handle of a knife, the lateral wall of knife rest is equipped with spacing arch, be equipped with on the blade and supply spacing protruding male spacing hole, be equipped with the screw hole in the spacing arch, threaded hole threaded connection has set screw, during the blade installation, spacing bellied outer wall with the inner wall in spacing hole offsets, the blade centre gripping is between the end of knife rest and set screw.

Further, the limiting hole is a waist-shaped hole, and the outer contour of the limiting protrusion is matched with the outer contour of the limiting hole.

Further, the limit protrusions are at least two, and the number of the limit holes is matched with the number of the limit protrusions.

Further, the limiting protrusions and the limiting holes are both formed in two.

Further, the side wall of the tool rest is provided with an inwards concave mounting groove, the mounting groove is communicated with the bottom wall of the tool rest, the limiting protrusion is arranged on the side wall of the mounting groove, and when the blade is mounted, part of the blade is positioned in the mounting groove.

Further, the height of the limiting protrusion is smaller than the width of the mounting groove.

Further, the roof of mounting groove is equipped with the spacing flange of downwardly extending, spacing flange's lateral wall with form the grafting groove between the lateral wall of mounting groove, during the blade installation, the blade peg graft to in the grafting groove, and the lateral wall of blade with the inside wall of spacing flange offsets.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the limiting hole of the blade is sleeved outside the limiting bulge on the tool rest, the relative movement of the blade and the tool rest in the up, down, front and back directions is limited by the way that the inner wall of the limiting hole is propped against the outer wall of the limiting bulge, and the end head of the positioning screw is propped against the outer wall of the blade, so that the left and right movement of the blade can be limited, and the fixation of the blade is enhanced;

when the set screw is unscrewed from the threaded hole of the tool rest, the limit to the left and right directions of the blade is released, the blade is easily detached from the tool rest, the quick assembly and disassembly of the blade can be realized, and the safety of the blade assembly and disassembly process is improved.

Drawings

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a schematic diagram of the structure of the present utility model;

FIG. 3 is an exploded view of the cartridge and blade;

FIG. 4 is a front view of the present utility model;

fig. 5 is a cross-sectional view of the present utility model.

In the figure: 101. a tool rest body; 102. a clamping part; 103. a clamping gap; 1. a knife handle; 2. a tool holder; 21. a mounting groove; 22. a limit protrusion; 221. a threaded hole; 23. a limit flange; 231. a plug-in groove; 3. a blade; 31. a limiting hole; 4. and (5) positioning a screw.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

This embodiment provides a pathological tissue sword of drawing materials, makes things convenient for the installation of blade, reduces the risk when blade is installed, improves the stability after the blade is installed simultaneously.

As shown in fig. 2, the utility model comprises a knife handle 1, a knife rest 2 is fixedly arranged on the knife handle 1, a blade 3 is arranged on the knife rest 2, in the embodiment, the knife handle 1 is made of plastic materials, a main body is in an arc shape, the hand is convenient to attach to the palm, the grabbing is convenient, the length of the knife handle 1 is 95mm, the knife rest 2 is made of steel materials, and the knife rest 2 is partially embedded in the knife handle 1.

The directions in this embodiment are redefined as shown in the azimuth coordinates in fig. 2.

In order to realize the installation of the blade 3, in this embodiment, as shown in fig. 2 and fig. 3, a limiting protrusion 22 is fixedly disposed on the right side wall of the blade holder 2, a limiting hole 31 into which the limiting protrusion 22 is inserted is disposed on the blade 3, wherein the height of the limiting protrusion 22 is smaller than the thickness of the blade 3, as shown in fig. 3 and fig. 5, a threaded hole 221 is disposed on the limiting protrusion 22, a set screw 4 is screwed into the threaded hole 221 in the threaded hole 221, and when the blade 3 is installed, as shown in fig. 5, the limiting protrusion 22 on the blade holder 2 is inserted into the limiting hole 31 on the blade 3, and then the set screw 4 is screwed into the threaded hole 221, so that the end of the set screw 4 abuts against the right side wall of the blade 3, and the blade 3 is clamped between the end of the set screw 4 and the blade holder 2, thereby realizing the fixation of the blade 3.

In the above arrangement, the blade 3 is moved from right to left, the limiting hole 31 on the blade 3 is aligned with the limiting protrusion 22, the blade 3 is inserted into the limiting protrusion 22, as shown in fig. 5, the outer wall of the limiting protrusion 22 completely abuts against the inner side of the limiting hole 31 at this time, so that the movement of the blade 3 in the up, down, front and rear directions can be limited, and then the set screw 4 is screwed into the threaded hole 221, so that the end part of the set screw 4 abuts against the right side wall of the blade 3, further the left and right movement of the blade 3 can be limited, and the purpose of fixing the blade 3 is achieved.

In this embodiment, in order to improve the stability of the blade 3 after installation, the outer contour of the limiting protrusion 22 is in a waist shape, meanwhile, the limiting hole 31 is in a waist shape, and the limiting protrusion 22 and the limiting hole 31 are both provided with two limiting protrusions 22, as shown in fig. 4, and the two limiting protrusions 22 are arranged along the length direction of the blade holder 2, so that the rotation of the blade 3 can be prevented.

In order to improve the aesthetic degree of the material taking knife, the mounting of the blade 3 is hidden, so in this embodiment, as shown in fig. 3 and 5, the right side wall of the knife rest 2 is provided with an inward concave mounting groove 21, wherein the mounting groove 21 is communicated with the lower wall of the knife rest 2, the limiting protrusion 22 is mounted on the inner wall of the mounting groove 21, and when the blade 3 is mounted, the blade 3 is positioned inside the mounting groove 21, so as to hide the blade, thereby improving the aesthetic degree.

Since the left and right directions of the blade 3 are fixed by the ends of the set screws 4, the ends of the set screws 4 are small, and when the blade 3 cuts a slightly hard material, the blade 3 is likely to bend to apply an external force to the set screws 4, so that the set screws 4 are loosened, and the blade 3 is likely to shake, therefore, the limitation of the left and right directions of the blade 3 needs to be reinforced.

In this embodiment, as shown in fig. 3 and 5, the upper wall of the mounting groove 21 is fixedly provided with a downward extending limit rib 23, wherein an insertion groove 31 into which the blade 3 is inserted is formed between the limit rib 23 and the inner wall of the mounting groove 21, after the blade 3 is mounted, as shown in fig. 5, the upper portion of the blade 3 is inserted into the insertion groove 31, wherein the left wall of the blade 3 abuts against the inner wall of the mounting groove 21, the right wall of the blade 3 abuts against the left wall of the limit rib 23, at this time, the limit of the left-right movement of the blade 3 can be enhanced, and the lateral force generated when the blade 3 is cut by using the limit rib 23 to bear the blade 3 is further protected by the set screw 4, and meanwhile, the stability of the blade 3 can be improved.

In order to realize the installation of the blade 3, in this embodiment, when the blade 3 is installed, the blade 3 is inclined, one side of the back of the blade 3 is inserted into the bottom of the insertion groove 231, then the blade 3 is slowly dropped down, the left wall of the blade 3 is attached to the inner wall of the installation groove 21, and at this time, the limiting hole 31 is aligned with the limiting protrusion 22, so that the installation of the blade 3 is realized.

Because the right side wall of blade 3 offsets with spacing flange 23's lateral wall after the installation, at this moment, in order to guarantee the smooth installation of blade 3, spacing protruding 22 highly be less than the thickness of blade, and leave clearance a between the roof of blade 3 back after the installation and mounting groove 21, at this moment, the back of a knife of blade 3 offsets with the upper wall of mounting groove 21 earlier in the installation, the left side lateral wall of blade 3 offsets with spacing protruding 22, spacing hole 31 and spacing protruding 22 dislocation at this moment, the bending deformation takes place for blade 3, then take out a part downwards with blade 3 for spacing hole 31 aligns with spacing protruding 22, and then can guarantee the smooth installation of blade 3.

In this embodiment, as shown in fig. 5, in order to prevent the blade 3 from being greatly bent and deformed when cutting tissue, the blade edge of the blade 3 extends downward slightly beyond the lower end of the blade holder 2, reducing the extension length of the blade edge, and further preventing the blade 3 from being greatly bent and deformed when cutting, so that the blade 3 can withstand a large cutting stress.

In the process of disassembling the blade 3, an operator only needs to disassemble the set screw 4, so that the blade 3 can be quickly installed, and the operator is prevented from being injured in the process of replacing the blade 3.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (7)

1. The utility model provides a pathological tissue sword of drawing materials, includes handle of a knife (1), installs knife rest (2) and blade (3) on handle of a knife (1), its characterized in that: the side wall of knife rest (2) is equipped with spacing arch (22), be equipped with on blade (3) and supply spacing protruding (22) male spacing hole (31), be equipped with screw hole (221) in spacing arch (22), screw hole (221) internal thread connection has set screw (4), during the blade installation, the outer wall of spacing protruding (22) with the inner wall in spacing hole (31) offsets, blade (3) centre gripping is between the end of knife rest (2) and set screw (4).

2. The pathological tissue sampling cutter according to claim 1, wherein: the limiting hole (31) is a waist-shaped hole, and the outer contour of the limiting protrusion (22) is matched with the outer contour of the limiting hole (31).

3. The pathological tissue sampling cutter according to claim 1, wherein: the limiting protrusions (22) are at least two, and the number of the limiting holes (31) is matched with the number of the limiting protrusions (22).

4. A pathological tissue sampling cutter according to claim 1, 2 or 3, characterized in that: the limiting protrusions (22) and the limiting holes (31) are respectively arranged in two.

5. The pathological tissue sampling cutter according to claim 1, wherein: the side wall of the tool rest (2) is provided with an inwards concave mounting groove (21), the mounting groove (21) is communicated with the bottom wall of the tool rest (2), the limiting protrusion (22) is arranged on the side wall of the mounting groove (21), and when the blade is mounted, part of the blade (3) is positioned in the mounting groove (21).

6. The pathological tissue sampling cutter according to claim 5, wherein: the height of the limiting protrusion (22) is smaller than the width of the mounting groove (21).

7. The pathological tissue sampling cutter according to claim 6, wherein: the top wall of the mounting groove (21) is provided with a limiting flange (23) extending downwards, an inserting groove (231) is formed between the side wall of the limiting flange (23) and the side wall of the mounting groove (21), when the blade is mounted, the blade (3) is inserted into the inserting groove (231), and the outer side wall of the blade (3) abuts against the inner side wall of the limiting flange (23).