CN219935308U

CN219935308U - Pathological sampling knife

Info

Publication number: CN219935308U
Application number: CN202321311214.1U
Authority: CN
Inventors: 陆伟倩; 文欢
Original assignee: Affiliated Hospital Of Hunan Academy Of Traditional Chinese Medicine
Current assignee: Affiliated Hospital Of Hunan Academy Of Traditional Chinese Medicine
Priority date: 2023-05-28
Filing date: 2023-05-28
Publication date: 2023-10-31
Anticipated expiration: 2033-05-28

Abstract

The utility model provides a pathological sampling knife, which comprises a knife handle, a knife holder and blades, wherein the knife holder is connected and installed on the knife handle, the knife holder comprises a knife rest, blade installation grooves are formed in two opposite sides of the knife rest, one blade is fixedly installed in one blade installation groove through a first bolt, a blade interval adjusting component is arranged in the other blade installation groove, the blade interval adjusting component comprises an adjusting plate, a threaded rod and a guide rod, and the other blade is fixedly installed on the adjusting plate through a second bolt so that the two blades are parallel; the pathological sampling knife can ensure that the thickness of a tissue block cut during pathological sampling is uniform by the two parallel blades, thereby being beneficial to subsequent pathological tabletting; meanwhile, the adjusting plate is driven by the rotary threaded rod to move so as to drive the two blades to move in opposite directions or in opposite directions, so that the distance between the two blades can be accurately adjusted, the pathological sampling knife is applicable to requirements of different pathological tissue specimens, and tissue blocks with other thicknesses are cut.

Description

Pathological sampling knife

Technical Field

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

Background

Pathological sampling is a primary link of pathological preparation work, and is a method for cutting tissue blocks with a certain size and quantity from a biopsy specimen to be detected according to the purpose and the requirement of detection, the pathological sampling is mainly completed by using a pathological sampling knife, the thickness of the tissue blocks required to be cut by the pathological sampling is uniform, the thickness of the tissue blocks required to be cut by the pathological sampling is generally required to be 0.2-0.5cm, for example, tissues which are more fragile, such as thyroid, liver, blood clot tissues and the like, can be properly thick, and tissues which are dense or are difficult to be infiltrated by reagents, such as adipose tissue, lung tissue, spleen tissue, fibrotumor, smooth myoma and the like, are slightly thinner.

The pathological sampling knives used at present are mostly arranged by single blades, and because of manual operation, after the first knife is cut, the second knife is difficult to ensure to be parallel to the first knife, so that the thickness of the materials to be sampled is difficult to ensure by the arrangement of the single blades; in order to solve the problems, a convenient pathological sampling knife is mentioned in China patent (bulletin number: CN 218674305U), and comprises a knife handle and two blades, wherein the knife handle comprises a knife handle body and a knife seat, the front end of the knife handle is connected into a whole, the knife seat is provided with two clamping grooves which are distributed in parallel, the distance between the two clamping grooves is 3mm, and the two blades are respectively embedded and installed in the two clamping grooves; although two blades are arranged in the patent, the distance between the two blades is fixed, and only tissue blocks with the thickness of 3mm can be cut, so that the accurate adjustment of the distance between the blades cannot be performed, and when pathological sampling is performed on different pathological tissue specimens, the tissue blocks with other thicknesses cannot be cut.

Disclosure of Invention

The utility model aims to solve the problems and provide a pathological sampling knife with double blades and adjustable distance between the double blades.

The utility model adopts the following technical scheme to realize the aim of the utility model: the pathological sampling knife comprises a knife handle, a knife holder and blades, wherein the knife holder is connected and installed on the knife handle, the knife holder comprises a knife rest, blade installation grooves are formed in two opposite sides of the knife rest, one blade is fixedly installed in one blade installation groove through a first bolt, and a blade interval adjusting assembly is arranged in the other blade installation groove;

the blade interval adjusting assembly comprises an adjusting plate, a threaded rod and a guide rod, wherein the threaded rod is perpendicular to the tool rest and is rotationally connected with one end of the tool rest, a rotating handle is fixedly arranged at the other end of the threaded rod, the guide rod is parallel to the threaded rod and is fixedly connected with the tool rest, the adjusting plate is connected to the threaded rod through a screw hole, the guide rod penetrates through a guide hole formed in the adjusting plate, and the other blade is fixedly arranged on the adjusting plate through a second bolt to enable the two blades to be parallel.

Further, the handle of a knife includes the handle of a knife main part, the inside cavity that is of handle of a knife main part, the blade holder is installed in the cavity and can follow the cavity slides back and forth, is equipped with first logical groove and the second logical groove that supplies two blades to wear out respectively at handle of a knife main part front end face, is equipped with the adjustment tank that sets up along handle of a knife main part length direction in handle of a knife main part side, the threaded rod wears out from the adjustment tank.

Preferably, the blade mounted on the adjusting plate passes out of the second through groove, and the second through groove has a preset width, so that the adjustable distance between the two blades is in the range of 0.2cm to 0.5cm.

Further, a first scale mark for measuring the distance between the two blades is arranged on the front end face of the cutter handle main body.

Further, a positioning nut is screwed on the threaded rod positioned outside the main body of the knife handle, and a rotary handle is arranged on the positioning nut.

Further, the rear end face of the cutter handle main body is open, the adjusting groove extends out of the rear end face of the cutter handle main body, and a rear cover is arranged on the rear end face of the cutter handle main body.

Further, the rear end of the blade is provided with a mounting hole, and a second scale mark is arranged along the length direction of the blade.

By adopting the technical scheme, the utility model better realizes the aim of the utility model, and the pathological sampling knife can ensure that the thickness of a tissue block cut during pathological sampling is uniform by the two parallel blades, thereby being beneficial to subsequent pathological tabletting; meanwhile, the adjusting plate is driven by the rotary threaded rod to move so as to drive the two blades to move in opposite directions or in opposite directions, so that the distance between the two blades can be accurately adjusted, the pathological sampling knife is applicable to requirements of different pathological tissue specimens, and tissue blocks with other thicknesses are cut.

Drawings

FIG. 1 is a schematic diagram of a pathological sampling knife according to the present utility model.

Fig. 2 is a schematic view of the structure of the tool shank 1 according to the present utility model.

Fig. 3 is a schematic structural view of the tool holder 2 and a schematic installation position of the tool holder 2 and the insert 3 according to the present utility model.

Fig. 4 is a schematic view of the structure of the tool holder 21 according to the present utility model.

Fig. 5 is a schematic diagram of a second embodiment of the tool holder 21 according to the present utility model.

Fig. 6 is a schematic cross-sectional view of the tool holder 21 according to the present utility model.

Fig. 7 is a schematic view of the structure of the adjusting plate 22 in the present utility model.

Fig. 8 is a schematic view of the structure of the blade 3 in the present utility model.

The reference numerals are described in the following table:

number of marks	Tag name	Number of marks	Tag name
				1	Knife handle 1	222	Screw hole 222
11	Handle body 11	223	Guide hole 223
				12	First through groove 12	23	Blade mounting groove 23
13	Second through groove 13	24	Threaded rod 24
				14	First graduation marks 14	25	Rotating handle 25
15	Rear cover 15	26	Guide bar 26
				16	Adjustment slot 16	27	Positioning nut 27
2	Tool apron 2	28	First bolt 28
				21	Knife rest 21	3	Blade 3
22	Adjusting plate 22	31	Mounting hole 31
				221	Second bolt 221	32	Second graduation marks 32

Detailed Description

For a clearer description of embodiments of the utility model or of the solutions of the prior art, the drawings that are needed in the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art, the utility model being further described below with reference to the accompanying drawings:

example 1

Referring to fig. 1-8, a pathological sampling knife comprises a knife handle 1, a knife holder 2 and two blades 3, wherein the knife holder 2 is connected and installed on the knife handle 1, the knife holder 2 comprises a knife rest 21, the knife rest 21 is in an I shape as a whole, blade mounting grooves 23 are formed in two opposite sides of the knife rest 21, one blade 3 is fixedly installed in one blade mounting groove 23 through a first bolt 28, a blade interval adjusting component is arranged in the other blade mounting groove 23, and the horizontal interval of the two blades 3 can be adjusted through the blade interval adjusting component;

the blade interval adjusting assembly comprises an adjusting plate 22, a threaded rod 24 and a guide rod 26, wherein the threaded rod 24 is perpendicular to the tool rest 21 and one end of the threaded rod is rotationally connected, a rotating handle 25 capable of driving the threaded rod 24 to rotate is fixedly arranged at the other end of the threaded rod 24, the two guide rods 26 are parallel to the threaded rod 24 and the guide rod 26 is fixedly connected with the tool rest 21, the adjusting plate 22 is connected to the threaded rod 24 through a threaded hole 222, when the threaded rod 24 rotates, the adjusting plate 22 moves horizontally relative to the threaded rod 24, the guide rod 26 passes through a guide hole 223 formed in the adjusting plate 22, and the guide rod 26 has the function of limiting the adjusting plate 22 to move horizontally only along the threaded rod 24 and not to rotate along the threaded rod 24 and guaranteeing the stability of horizontal movement; the other blade 3 is fixedly arranged on the adjusting plate 22 through a second bolt 221 so that the two blades 3 are parallel, and the adjusting plate 22 can be driven to move through the rotating threaded rod 24 so as to drive the blade 3 arranged on the adjusting plate 22 to move opposite to or back to opposite to the other blade, so that the accurate adjustment of the distance between the two blades is realized.

Specifically, referring to fig. 6, one end of the threaded rod 24 is rotatably connected to the tool rest 21 in such a manner that: a circular plate with the outer diameter larger than that of the threaded rod 24 is arranged at one end of the threaded rod 24, a circular groove with a convex cross section is arranged on the tool rest 21, the circular plate is sleeved in the circular groove, and the circular plate can only rotate in the circular groove; the tool rest 21 is further provided with a bearing seat, one end of the threaded rod 24 is connected to the bearing seat, and one end of the threaded rod 24 is rotatably connected with the tool rest 21.

Referring to fig. 8, the rear end of the blade 3 is provided with a mounting hole 31 matching with the first bolt 28 or the second bolt 221, and a second scale mark 32 is provided along the length direction of the blade 3; the second graduation marks 32 may facilitate measurement of the size of the biopsy specimen to be examined and/or the tissue mass cut.

The inventor finds that the blade length of the prior pathological sampling knife and the blade length of the Chinese patent (bulletin number: CN 218674305U) mentioned in the background art are fixed, the blade length cannot be adjusted according to the size of a biopsy specimen to be detected and/or a tissue block to be cut, for example, when the pathological sampling is carried out on a smaller biopsy specimen to be detected, the longer blade is inconvenient and inconvenient to operate, so that the inventor designs the blade length of the pathological sampling knife to be adjustable, and the application range of the pathological sampling knife is wider;

referring to fig. 1-6, the tool holder 1 includes a tool holder body 11, a cavity is formed in the tool holder body 11, the tool holder 2 is mounted in the cavity and can slide back and forth along the cavity, a first through groove 12 and a second through groove 13 for respectively allowing two blades 3 to pass through are formed in the front end surface of the tool holder body 11, an adjusting groove 16 arranged along the length direction of the tool holder body 11 is formed in the side surface of the tool holder body 11, and the threaded rod 24 passes through the adjusting groove 16; by pushing the threaded rod 24 to move back and forth along the adjusting groove 16, the corresponding tool holder 2 slides back and forth along the cavity, so that the lengths of the two blades 3 extending out of the tool holder main body 11 can be adjusted;

meanwhile, when the pathological sampling knife is not used, the two blades 3 can be hidden into the knife handle main body 11, so that the blades 3 can be protected on one hand, and accidental injury caused by the blades 3 can be prevented on the other hand.

In order to realize that after the length of the two blades 3 extending out of the cutter handle main body 11 is adjusted to a required length, the two blades 3 need to be positioned, so that the blades 3 are prevented from being stressed to retract when the pathological biopsy specimen is cut; referring to fig. 4, 5 and 6, a positioning nut 27 is screwed on the threaded rod 24 positioned outside the handle body 11, and a rotary handle is arranged on the positioning nut 27; after the two blades 3 are adjusted to the required length, the medical staff holds the rotary handle 25 with one hand, and the other hand pulls the rotary handle to enable the positioning nut 27 to be screwed towards the cutter handle main body 11 until the positioning nut 27 tightly abuts against the cutter handle main body 11, so that the positioning of the cutter holder 2 is realized, and the two blades 3 connected to the cutter holder 2 are positioned.

Referring to fig. 2, the blades 3 mounted on the adjusting plate 22 penetrate out of the second through groove 13, and the second through groove 13 has a preset width, so that the adjustable distance between the two blades 3 is 0.2cm-0.5cm, and the pathological sampling knife is suitable for most pathological sampling scenes; a first scale mark 14 for measuring the distance between the two blades 3 is arranged on the front end surface of the cutter handle main body 11; the distance between the two blades 3 can be precisely adjusted by the first graduation marks 14.

Because the blade used for pathological sampling must be sharp, the blade needs to be replaced frequently, referring to fig. 2, the rear end face of the handle main body 11 is open, the adjusting groove 16 extends out of the rear end face of the handle main body 11, and a rear cover 15 is mounted on the rear end face of the handle main body 11; the rear cover 15 is opened, the threaded rod 24 is pushed to move backwards along the adjusting groove 16, the corresponding cutter holder 2 slides backwards along the cavity until the cutter holder 2 and the cutter blade 3 are separated from the rear end face of the cutter handle main body 11, the cutter blade 3 can be detached through the first bolt 28 and the second bolt 221, the cutter holder 2 and the cutter blade 3 are installed from the rear end face of the cutter handle main body 11 after a new cutter blade 3 is replaced, and finally the rear cover 15 is covered, so that the replacement of the cutter blade 3 is completed.

The distance adjusting method of the two blades 3 in the pathological sampling knife comprises the following steps: the adjusting plate 22 can only move along the length direction of the threaded rod 24 under the combined action of the threaded rod 24 and the guide rod 26, and the distance between the two blades 3 is adjusted by rotating the threaded rod 24 to drive the adjusting plate 22 to move so as to drive the blades 3 arranged on the adjusting plate 22 to move opposite to or opposite to the other fixed blade 3;

the length adjusting method of the two blades 3 in the pathological sampling knife comprises the following steps: by pushing the threaded rod 24 to move back and forth along the adjusting groove 16, the corresponding tool holder 2 slides back and forth along the cavity, so that the length of the two blades 3 extending out of the tool holder body 11 is adjustable, after the two blades 3 are adjusted to the required extending length, a medical staff holds the rotating handle 25 with one hand, and the other hand pulls the rotating handle to enable the positioning nut 27 to screw towards the tool holder body 11 until the positioning nut 27 tightly abuts against the tool holder body 11, and the tool holder 2 is positioned, so that the two blades 3 connected to the tool holder 2 are positioned.

It is clear that modifications and/or additions of parts may be made to the above-described pathologic sampling cutter and the corresponding method, without departing from the field and scope of the present utility model.

It is also clear that, although the present utility model has been described in detail with reference to this blade, a person of skill in the art shall certainly be able to achieve many other equivalent forms of blade and its corresponding method, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.

Claims

1. A pathological sampling knife, which is characterized in that: the cutter comprises a cutter handle (1), a cutter holder (2) and blades (3), wherein the cutter holder (2) is connected and installed on the cutter handle (1), the cutter holder (2) comprises a cutter holder (21), blade installation grooves (23) are formed in two opposite sides of the cutter holder (21), one blade (3) is fixedly installed in one blade installation groove (23) through a first bolt (28), and a blade interval adjusting component is arranged in the other blade installation groove (23);

blade interval adjusting part includes regulating plate (22), threaded rod (24) and guide bar (26), threaded rod (24) are perpendicular and one end rotates with knife rest (21) be connected threaded rod (24) other end fixed mounting has twist grip (25), guide bar (26) are parallel with threaded rod (24) and with knife rest (21) fixed connection, regulating plate (22) are connected on threaded rod (24) through screw (222), guide bar (26) pass from guiding hole (223) that are equipped with on regulating plate (22), another blade (3) pass through second bolt (221) fixed mounting makes two blade (3) are parallel on regulating plate (22).

2. The pathological sampling knife according to claim 1, wherein: the utility model provides a handle of a knife (1) is including handle of a knife main part (11), handle of a knife main part (11) is inside to be the cavity, blade holder (2) are installed in the cavity and can follow the cavity slides back and forth, is equipped with first logical groove (12) and second logical groove (13) that supply two blade (3) to wear out respectively at handle of a knife main part (11) front end face, is equipped with in handle of a knife main part (11) side and follows handle of a knife main part (11) length direction setting adjustment tank (16), threaded rod (24) wear out from adjustment tank (16).

3. The pathological sampling knife according to claim 2, wherein: the blades (3) arranged on the adjusting plate (22) penetrate out of the second through grooves (13), and the second through grooves (13) have preset widths, so that the adjustable distance between the two blades (3) is 0.2cm-0.5cm.

4. The pathological sampling knife according to claim 2, wherein: the front end face of the cutter handle main body (11) is provided with a first scale mark (14) for measuring the distance between the two blades (3).

5. The pathological sampling knife according to claim 2, wherein: a positioning nut (27) is screwed on a threaded rod (24) positioned outside the cutter handle main body (11), and a rotary handle is arranged on the positioning nut (27).

6. The pathological sampling knife according to claim 2, wherein: the rear end face of the tool handle main body (11) is open, the adjusting groove (16) extends out of the rear end face of the tool handle main body (11), and the rear cover (15) is arranged on the rear end face of the tool handle main body (11).

7. The pathological sampling knife according to claim 1, wherein: the rear end of the blade (3) is provided with a mounting hole (31), and a second scale mark (32) is arranged along the length direction of the blade (3).