CN112356122A

CN112356122A - Tissue block cutting device

Info

Publication number: CN112356122A
Application number: CN202011125463.2A
Authority: CN
Inventors: 王一兵; 孙睿; 刘春燕; 冯璋; 殷思源; 宋茹; 马嘉旭; 曹国起; 吴振杰
Original assignee: Shandong Qianfoshan Hospital
Current assignee: Shandong Qianfoshan Hospital
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-02-12
Anticipated expiration: 2040-10-20
Also published as: CN112356122B

Abstract

The invention discloses a tissue block cutting device, which adopts the technical scheme that: comprises a handle and a positioning needle fixed with the handle; a fixed cylinder and a rotating cylinder are sequentially arranged on one side of the handle, and the fixed cylinder and the rotating cylinder can rotate relatively; the rotating cylinder and a fixed disc fixed on the positioning needle can rotate relatively; the interior of the rotating cylinder is in threaded connection with a plurality of blades, and the axial side surface of each blade is fixedly provided with a blade penetrating through the fixed disc. The invention can achieve the effect of smooth cutting on small hard and tough tissue blocks, and the cut tissue blocks are convenient for calculating the length or the area.

Description

Tissue block cutting device

Technical Field

The invention relates to the field of biological scientific research experimental tools, in particular to a tissue block cutting device.

Background

In biological scientific research experiments, plant or animal tissue blocks with small volume are often needed, and in the process of cutting the tissue blocks, the tissue blocks are often too hard or too tough, such as bone tissues and scar tissues, so that common scissors or an operating knife cannot cut regular shapes, and finally the length or the area cannot be calculated. Or because the tissue block is too small, the fixed tissue in one hand and the cutting in the other hand are not easy to realize, or when the tough tissue block is encountered and aseptic operation is required, the forceps or the pliers are held in one hand and the cutting is carried out in the other hand, so that the operation difficulty is higher.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a tissue block cutting device, which can achieve the effect of smoothly cutting small hard and tough tissue blocks, and the cut tissue blocks are convenient for calculating the length or the area.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the embodiment of the invention provides a tissue block cutting device, which comprises a handle and a positioning needle fixed with the handle; a fixed cylinder and a rotating cylinder are sequentially arranged on one side of the handle, and the fixed cylinder and the rotating cylinder can rotate relatively; the rotating cylinder and a fixed disc fixed on the positioning needle can rotate relatively; the interior of the rotating cylinder is in threaded connection with a plurality of blades, and the axial side surface of each blade is fixedly provided with a blade penetrating through the fixed disc.

As a further implementation mode, one end of the fixed cylinder is fixedly connected with the handle, and the other end of the fixed cylinder is inserted into the rotating cylinder; the rotating cylinder is connected with the fixed disc in an inserting mode.

As a further implementation mode, one ends of the fixed cylinder and the rotating cylinder, which are connected with each other, are respectively provided with a scale.

As a further implementation mode, a spiral groove is formed in the rotating cylinder, and the blades and the spiral groove form a threaded connection structure.

As a further implementation manner, the blade is vertically fixed to the blade, and the fixed disk is provided with a guide groove for the blade to pass through.

As a further implementation, the blades have four blades, four blades forming a cross-shaped structure.

As a further realization mode, a sleeve with a set length is connected between the blades, and the positioning needle penetrates through the sleeve.

As a further implementation mode, the rotating cylinder, the fixed cylinder and the fixed disk are respectively inserted into the annular protrusion through the annular groove.

As a further implementation, the connecting ends of the plurality of blades form a first central bore having a diameter greater than a diameter of the positioning pin.

As a further implementation mode, a second central hole is formed in the center of the fixed disc, and the positioning needle penetrates through the second central hole to be fixedly connected with the fixed disc.

The beneficial effects of the above-mentioned embodiment of the present invention are as follows:

(1) in one or more embodiments of the present invention, the device is fixed to the tissue mass by a positioning needle, and the tissue mass can be cut into a desired number by rotating a fixing cylinder to lower a blade; the positioning needle can be operated by a hand due to the fixing function of the positioning needle;

(2) in one or more embodiments of the invention, four blades are arranged, and the edge of the cut tissue block presents a right angle, so that the length or the area can be calculated conveniently; the problems that the cut tissue blocks are irregular and the length or the area cannot be calculated in the prior art are solved;

(3) one or more embodiments of the present invention can also know the length of the cut tissue mass based on the direct reading, facilitating the calculation of the tissue mass area.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

FIG. 1 is a schematic block diagram of the present invention according to one or more embodiments;

FIG. 2 is a schematic illustration of a holding pan configuration according to one or more embodiments of the present invention;

FIG. 3 is a schematic view of the internal structure of a rotary drum according to one or more embodiments of the present invention;

FIG. 4 is a schematic view of a blade mount according to one or more embodiments of the present invention;

the novel needle comprises a handle 1, a handle 2, a fixed barrel 3, a rotating barrel 4, a first central hole 5, a blade 6, a blade 7, a needle head 8, a sleeve 9, a needle body 10, a guide groove 11, a second central hole 12, a fixed disk 13, a hollow area 14 and a scale.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;

for convenience of description, the words "up", "down", "left" and "right" in this application, if any, merely indicate correspondence with the directions of up, down, left and right of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.

The terms "mounted", "connected", "fixed", and the like in the present application should be understood broadly, and for example, the terms "mounted", "connected", and "fixed" may be fixedly connected, detachably connected, or integrated; the two components can be connected directly or indirectly through an intermediate medium, or the two components can be connected internally or in an interaction relationship, and the terms can be understood by those skilled in the art according to specific situations.

The first embodiment is as follows:

the embodiment provides a tissue block cutting device, as shown in fig. 1, which comprises a handle 1, a fixed cylinder 2, a rotating cylinder 3, a fixed disc 12, a positioning needle, blades 5 and a blade 6, wherein the fixed cylinder 2 is fixedly connected with the handle 1, and the positioning needle is vertically fixed with the handle 1; one end of the rotating cylinder 3 is clamped with the fixed cylinder 2, and the other end is clamped with the fixed disc 12; the fixed disc 12 is fixed with the positioning needle. The blade 5 is located the pilot pin outside and can reciprocate along the rotation section of thick bamboo 3 is inside, and blade 6 is fixed in blade 5 below.

Specifically, the fixed cylinder 2 is a cylinder, one end of which is fixedly connected with the handle 1 and the central axes of which are superposed. The handle 1 is used for holding by an operator, and the shape thereof can be set according to actual conditions, and for example, the shape can be circular, oval and the like. The positioning needle comprises a needle body 9 and a needle head 7 which are connected into a whole, one end of the needle body 9, far away from the needle head 7, is fixedly connected with the center of the handle 1, and the needle body 9 is perpendicular to the plane of the handle 1.

The rotating cylinder 3 is also a cylinder, the rotating cylinder 3 is inserted into the fixed cylinder 2, an annular bulge is arranged at one end, away from the handle 1, of the fixed cylinder 2, an annular groove is formed at one end, fixedly connected with the fixed cylinder 2, of the rotating cylinder 3, or an annular groove is arranged at one end, away from the handle 1, of the fixed cylinder 2, an annular bulge structure is arranged at one end, fixedly connected with the fixed cylinder 2, of the rotating cylinder 3, and the annular bulge is inserted into the annular groove to realize connection of the rotating cylinder 3 and the fixed cylinder 2.

Furthermore, one end of the fixed cylinder 2, which is connected with the rotating cylinder 3, is provided with a scale 14, and the rotating distance of the rotating cylinder 3 can be visually obtained through the scale 14, so that the descending distance of the blade 6 can be obtained. In order to facilitate the rotation and to avoid slipping, the outside of the rotary drum 3 is provided with conical teeth distributed along its circumference.

The fixed plate 12 is a circular disc, a second central hole 11 is formed in the center of the fixed plate 12, the positioning needle vertically penetrates through the second central hole 11, and the fixed plate 12 is fixedly connected with the positioning needle. The fixed disc 12 and the rotating drum 3 are inserted at one end far away from the fixed drum 2, and the connection mode of the fixed disc 12 and the rotating drum 3 is the same as that of the fixed drum 2 and the rotating drum 3, which is not described again here.

The rotating cylinder 3 is a cylinder with a certain length, the inner wall of the rotating cylinder 3 is provided with a spiral groove, as shown in fig. 3, a plurality of blades 5 are arranged in the rotating cylinder 3, the connecting ends of the plurality of blades 5 form a first central hole 4, and the first central hole 4 penetrates through the needle body 9; the diameter of the first central bore 4 is larger than the diameter of the needle body 9. The end of the blade 5 is screwed with the spiral groove, and when the rotary cylinder 3 is rotated, the blade 5 can move up and down along the inner wall of the rotary cylinder 3.

The number of the blades 5 is determined according to the number of the blades 6, and the number of the blades 6 is related to the required shape and the number of the blocks. In the present embodiment, in order to cut out a tissue mass whose length or area is easy to calculate, the blades 6 are arranged in four, i.e., a cross-shaped cutter is formed; therefore, four blades 5 are selected. In order to enable the blade 6 to pass through, as shown in fig. 2, the fixed disc 12 is provided with guide grooves 10, and the four guide grooves 10 form a cross frame structure; the guide groove 10 is sized so that the blade 6 can pass through and move up and down.

As shown in fig. 4, a blade 6 is fixed below each blade 5, and the blade 6 is perpendicular to the blade 5; preferably, the blade 6 is fixed to the blade 5 at a position along the centerline thereof. The four blades 6 form between them a hollow area 13 communicating with the first central hole 4, the length of said central area 13 being related to the maximum lower distance of the blades 6.

The blades 6 are connected with a sleeve 8, and a needle body 9 penetrates through the sleeve 8. In the initial state, i.e., when the vanes 5 are located at the top end of the rotary cylinder 3 (the end of the rotary cylinder 3 connected to the fixed cylinder 2), the top of the sleeve 8 contacts the bottom surface of the fixed disk 12 (with reference to the direction shown in fig. 1).

In this embodiment, the positioning pin, the sleeve 8 and the blade 5 are made of hard metal, and other components can be selected according to actual conditions.

The principle of this embodiment is: the tissue block is fixed by inserting the positioning needle into the central position of the tissue block to be cut, and the tissue block is cut downwards by four blades 6, so that the edge of the cut tissue block presents a right angle.

When in use, the tissue block is put into a vessel, and after the position of the tissue block to be cut is selected, the positioning needle vertically penetrates into the vessel; when the rotary drum 3 is rotated, the blade 6 is only raised or lowered because the blade 6 is restricted in the guide groove 10. From the time the blade 6 begins to contact the tissue, it is rotated to fully cut the tissue mass and the length of the cut tissue mass is read from the fixed 2 or rotating 3 cartridge.

Assuming that the radius of the rotary drum 3 is R and the maximum length of the excised tissue block is H, H is n H, and A is 2 pi R/H; where h denotes the height of one turn of the spiral groove in the rotary cylinder 3, n denotes the number of turns, and a denotes the relationship between the circumference of the rotary cylinder 3 and the height of one turn of the spiral groove. For example, if the circumference of the rotary drum 3 is 10cm and the height of one turn of the spiral groove is 5cm, the scale on the rotary drum 3 may be up to 5cm, i.e. 5cm for actual rotation, but 2.5cm is shown, and the height of the drop is 2.5 cm.

The purpose of fixing the tissue mass is achieved through the center positioning, and the purpose of releasing one hand is achieved, so that harder or tougher tissues can be cut through the tissue mass through the force applied by the hand. The four blades 6 are arranged, so that simple operation of cutting one tissue block into four tissue blocks at a time can be realized; the direct reading can be carried out according to the scale 14, the length of the cut tissue block can be known, and the area of the tissue block can be calculated conveniently.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tissue block cutting device is characterized by comprising a handle and a positioning needle fixed with the handle; a fixed cylinder and a rotating cylinder are sequentially arranged on one side of the handle, and the fixed cylinder and the rotating cylinder can rotate relatively; the rotating cylinder and a fixed disc fixed on the positioning needle can rotate relatively; the interior of the rotating cylinder is in threaded connection with a plurality of blades, and the axial side surface of each blade is fixedly provided with a blade penetrating through the fixed disc.

2. The tissue mass cutting device according to claim 1, wherein one end of the fixed cylinder is fixedly connected with the handle, and the other end is inserted into the rotating cylinder; the rotating cylinder is connected with the fixed disc in an inserting mode.

3. The tissue mass cutting device according to claim 2, wherein the ends of the fixed cylinder connected to the rotating cylinder are respectively provided with a scale.

4. A tissue block cutting device according to claim 1 or 2, wherein the rotating cylinder is provided with a helical groove therein, and the blades and helical groove form a threaded connection.

5. The tissue mass cutting device of claim 1, wherein the blade is fixed perpendicular to the blade, and the holder defines a guide slot for the blade to pass through.

6. A tissue mass cutting device according to claim 1 or 5, wherein the blades have four blades forming a cross-shaped configuration.

7. A tissue block cutting device according to claim 6 wherein a sleeve of a set length is connected between the blades and a locating pin is passed through the sleeve.

8. The tissue mass cutting device of claim 1, wherein the rotating cylinder, the fixed cylinder and the fixed disk are respectively inserted into the annular protrusion through an annular groove.

9. The tissue mass cutting device of claim 1, wherein the connecting ends of the plurality of blades define a first central bore having a diameter greater than a diameter of the positioning pin.

10. The tissue mass cutting device of claim 1, wherein the hub has a second central aperture in the center thereof through which the retaining pin is fixedly coupled to the hub.