CN209751104U

CN209751104U - Tumor sampler

Info

Publication number: CN209751104U
Application number: CN201821851989.7U
Authority: CN
Inventors: 张四芳
Original assignee: Rugao Boai Hospital Co Ltd
Current assignee: Rugao Boai Hospital Co Ltd
Priority date: 2018-11-09
Filing date: 2018-11-09
Publication date: 2019-12-10
Anticipated expiration: 2028-11-09

Abstract

The utility model discloses a tumor sampler, which relates to the technical field of medical instruments and aims to solve the technical problem that medical workers easily touch an operating rod by mistake to cause the tissue in a needle cylinder to be extruded out, thereby causing sampling failure; a cavity is arranged in the piston, an assembly groove communicated with the cavity is formed in the surface of one side, far away from the needle head, of the piston, an operating rod is rotationally connected in the assembly groove, a limiting block is arranged at one end, close to the cavity, of the operating rod, and the size of the limiting block is matched with that of the assembly groove. Thereby reached the action bars and can dismantle fast, prevented that the mistake from bumping the sample that leads to and being extruded the effect.

Description

Tumor sampler

Technical Field

the utility model relates to the technical field of medical equipment, more specifically say, it relates to a tumor sampler.

Background

Tumor samplers are devices that clinically take tumor biopsies from patients. Clinically, the tumor biopsy sampling can be realized by an operation when a patient is subjected to the tumor biopsy sampling, but the wound is large, so that great pain is brought to the patient. Therefore, at present, a syringe is mostly used for sampling, and the tumor tissue is sucked by generating negative pressure when the syringe is used for extracting.

the prior Chinese patent with the publication number of CN205658927U discloses a tumor sampler, which comprises an outer needle cylinder and a sampling needle cylinder arranged in the outer needle cylinder; the top of the outer needle cylinder is provided with an annular flange, the annular flange is provided with an annular chute, and the bottom of the outer tube body is connected with the outer needle through an outer needle seat; the sampling needle cylinder consists of a sampling section and a needle head section, wherein the sampling section comprises a sampling cylinder and a sampling piston which are connected through threads; the top of the sampling tube is provided with an annular flange, and the lower part of the annular flange is provided with a plurality of protruding rings matched with the annular sliding grooves; the lower part of the sampling tube is provided with a sample cavity fixed on the inner wall; the needle head section comprises a tube cap and a sampling needle fixed on the tube cap through a sampling needle seat, the sampling needle extends to the needle body direction at a needle point bevel opening, and a cutting edge is arranged at the edge of the opening. The utility model has the advantages of simple structure, convenient sampling and no pain.

However, the sample is gathered at the front end of the syringe after the tumor sampler samples, and the medical staff is easy to touch the operating rod by mistake, so that the tissue in the syringe is extruded, and the sampling is failed, so that the improvement is needed.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a tumor sampler, it has the action bars and can dismantle fast, prevents that the mistake from bumping the advantage that the sample that leads to is extruded.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a tumor sampler comprises a needle head, a needle cylinder, a piston and an operating rod, wherein the needle head is arranged at one end of the needle cylinder, the piston is arranged in the needle cylinder, and the operating rod is connected to the piston; the syringe is characterized in that a cavity is arranged in the piston, an assembly groove communicated with the cavity is formed in the surface of one side, far away from the needle head, of the piston, an operating rod is rotatably connected in the assembly groove, a limiting block is arranged at one end, close to the cavity, of the operating rod, and the size of the limiting block is matched with that of the assembly groove.

By adopting the technical scheme, after sampling is finished, the sample is stored in the needle cylinder, and at the moment, if an operator mistakenly touches the operating rod, the sampled sample is easily extruded out, so that sampling failure is caused. Through the improvement to the piston, increase cavity and assembly groove on the piston, be provided with the stopper with the action bars for the action bars is installed into the piston very easily. When the piston is pulled, the limiting block can be abutted against the inner side wall of the piston only by rotating a certain angle, so that the piston is pulled. After the sampling is finished, the operating rod is rotated by a certain angle, so that the limiting block and the assembling groove are overlapped to realize the disassembly of the operating rod. So that the piston stays in the syringe and cannot be touched by operators by mistake.

Furthermore, a spring is arranged between the limiting block and one side surface of the cavity far away from the limiting block, and one end of the spring is fixed on one side surface of the cavity far away from the limiting block.

Through adopting above-mentioned technical scheme, the action bars is very easy free rotation again after inserting the piston cavity, through addding the spring for the spring can support tight stopper, thereby restricts the free rotation of action bars.

Further, a butt plate is arranged in the cavity and arranged between the limiting block and the spring, and the butt plate abuts against the limiting block.

Through adopting above-mentioned technical scheme, the direct butt area that offsets with the stopper of spring is too little, can increase the butt area of spring and stopper through increasing the butt board to make the butt board better with the stopper butt.

Furthermore, the surface of one side of the limiting block, which is far away from the abutting plate, is provided with an anti-skidding convex line.

Through adopting above-mentioned technical scheme, the stopper offsets with the inside wall of piston under the effect of spring, and the setting up of anti-skidding burr makes the coefficient of friction increase between stopper and the piston inside wall, and under the effort of spring, the frictional force increase between stopper and the piston inside wall to the action bars rotates when alleviateing to draw the action bars.

Furthermore, a rubber pad is arranged on the surface of one side, close to the limiting block, of the abutting plate.

Through adopting above-mentioned technical scheme, the coefficient of friction between butt plate and the stopper can be increased in the setting of rubber pad to the rotation of restriction action bars.

Further, one end of the operating rod, which is far away from the cavity, is provided with a protruding handle.

Through adopting above-mentioned technical scheme, need draw the action bars to the direction of keeping away from the syringe needle when the sample, the power that probably needs is very big at this in-process, therefore the setting of protruding handle makes the lifting surface area increase to the operating personnel of being more convenient for grips.

Further, a rubber layer is wrapped on the surface of the protruding handle.

Through adopting above-mentioned technical scheme, because the surface of action bars is smooth, so probably the slippage when drawing the action bars, make the surperficial coefficient of friction of protruding handle increase through the setting of rubber layer, reduce the possibility of smooth mistake of hand.

Further, the edge of the fitting groove is provided with a guide surface.

Through adopting above-mentioned technical scheme, the setting up of spigot surface makes the stopper of action bars play the effect of a direction when inserting in the assembly groove, and the stopper of the action bars of being convenient for inserts in the assembly groove.

To sum up, the utility model discloses following beneficial effect has:

1. The technology that the operating rod is detachably connected with the piston is adopted, so that the effect of avoiding the misoperation of the operating rod by operators is achieved;

2. The technology that the spring abuts against the limiting block is adopted, so that the effect of limiting the limiting block to rotate freely is achieved;

3. The technology of the guide surface arranged at the edge of the assembling groove is adopted, so that the effect of facilitating the insertion of the limiting block into the assembling groove is achieved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a tumor sampler in an embodiment;

FIG. 2 is a sectional view showing an internal structure of a piston in the embodiment;

Fig. 3 is a schematic view for showing a structure at the fitting groove in the embodiment.

in the figure: 1. a needle head; 2. a needle cylinder; 3. a piston; 4. an operating lever; 41. a limiting block; 411. anti-skid wales; 42. a raised handle; 421. a rubber layer; 5. a cavity; 51. assembling a groove; 511. a guide surface; 52. a spring; 53. a butt joint plate; 531. and (7) a rubber pad.

Detailed Description

the present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

A tumor sampler, referring to fig. 1, comprises a needle head 1, a syringe 2, a piston 3 and an operating rod 4, wherein the needle head 1 is arranged at one end of the syringe 2, the needle head 1 and the syringe 2 are integrally formed, and the syringe 2 is made of medical plastics. The piston 3 is arranged in the needle cylinder 2, can slide in the needle cylinder 2 and can form a sealed space with the needle cylinder 2, and the operating rod 4 is connected on the piston 3, so that the operating rod 4 drives the piston 3 to move towards the direction far away from the needle head 1 to form negative pressure, thereby extracting tumor tissues.

Referring to fig. 2, the piston 3 is cylindrical and made of rubber, a cavity 5 is formed in the piston 3, a mounting groove 51 communicated with the cavity 5 is formed on the surface of one side of the piston 3 away from the needle 1, and the mounting groove 51 penetrates from the inside of the cavity 5 of the piston 3 to the outer side wall of one side of the piston 3 away from the needle 1. The assembly groove 51 is provided with an operating rod 4 which is rotatably connected to push and pull the piston 3 to form negative pressure or discharge a sample in the needle cylinder 2.

referring to fig. 2, one end of the operating rod 4 close to the cavity 5 is provided with a limiting block 41, the cross-sectional area of the limiting block 41 is rectangular, the size of the limiting block 41 is matched with the size of the assembling groove 51, so that the limiting block 41 of the operating rod 4 can be inserted into the cavity 5 from the assembling groove 51, the piston 3 is pulled by a certain angle, the effect of quick disassembly of the operating rod 4 is achieved, and the phenomenon that a sample in the needle cylinder 2 is extruded due to mistaken collision is prevented.

referring to fig. 2, a spring 52 is disposed between the stopper 41 and a side surface of the cavity 5 away from the stopper 41, and one end of the spring 52 is fixed on the side surface of the cavity 5 away from the stopper 41, so that the spring 52 abuts against the stopper 41 to prevent the stopper 41 from rotating when the piston 3 is pulled.

Referring to fig. 2, still be provided with butt plate 53 in cavity 5, butt plate 53 is located between stopper 41 and the spring 52, and butt plate 53 offsets with stopper 41 to increase spring 52 to stopper 41's butt area, thereby better butt stopper 41 alleviates stopper 41's rotation, prevents that stopper 41 from taking off from cavity 5 at the in-process of pulling piston 3.

Referring to fig. 2, a rubber pad 531 is disposed on a side surface of the abutting plate 53 close to the stopper 41 to further increase a friction coefficient between the abutting plate 53 and the surface of the stopper 41. One end of the operating rod 4, which is far away from the cavity 5, is provided with a protruding handle 42, which is convenient for an operator to hold and push and pull the operating rod 4. A rubber layer 421 is provided on a surface of the protruding handle 42 near the stopper 41 to increase the friction force of the surface of the protruding handle 42 near the stopper 41.

Referring to fig. 2 and 3, an anti-slip convex pattern 411 is disposed on a surface of one side of the limiting block 41 away from the abutting plate 53 to increase a friction coefficient between the limiting block 41 and an inner side wall of the piston 3, so as to better prevent the limiting block 41 from rotating. The fitting groove 51 is provided at the edge thereof with a guide surface 511 to facilitate the insertion of the operation lever 4 into the fitting groove 51.

The working principle is as follows:

Before a tumor sample needs to be sucked, the limiting block 41 of the operating rod 4 is inserted into the assembling groove 51, the operating rod 4 is pushed by force, the operating rod 4 pushes the abutting plate 53 to compress the spring 52, and at the moment, the operating rod 4 is rotated to enable the limiting block 41 and the assembling groove 51 to be in a vertical state. The operating rod 4 is loosened, the abutting plate 53 is reset under the action of the elastic force of the spring 52, the limiting block 41 is abutted against the inner side wall of the piston 3, and the free rotation of the operating rod 4 is limited.

after the sample finishes, rotatory action bars 4 is until stopper 41 and assembly groove 51 coincidence, and the butt plate 53 supports out the action bars 4 under the effect of spring 52 elasticity, can take out action bars 4 and make piston 3 stay in cylinder 2, because there is not direct application of force point, so the sample can be preserved in cylinder 2 temporarily.

When a sample is required to be extruded, the piston 3 can be pushed to extrude the sample out of the needle cylinder 2 only by inserting the limiting block 41 of the operating rod 4 into the assembling groove 51 and abutting against the abutting plate 53. By taking out the operation lever 4, it is possible to prevent the operator from accidentally knocking the sample in the cylinder 2 and thus from extruding the sample, thereby causing a sampling failure.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. A tumor sampler comprises a needle head (1), a needle cylinder (2), a piston (3) and an operating rod (4), wherein the needle head (1) is arranged at one end of the needle cylinder (2), the piston (3) is arranged in the needle cylinder (2), and the operating rod (4) is connected to the piston (3); the method is characterized in that: the syringe is characterized in that a cavity (5) is arranged in the piston (3), an assembly groove (51) communicated with the cavity (5) is formed in the surface of one side, away from the needle head (1), of the piston (3), an operating rod (4) is connected to the assembly groove (51) in a rotating mode, a limiting block (41) is arranged at one end, close to the cavity (5), of the operating rod (4), and the size of the limiting block (41) is matched with that of the assembly groove (51).

2. A tumor sampler as claimed in claim 1, wherein: a spring (52) is arranged between the limiting block (41) and one side surface of the cavity (5) far away from the limiting block (41), and one end of the spring (52) is fixed on one side surface of the cavity (5) far away from the limiting block (41).

3. A tumor sampler as claimed in claim 2, wherein: an abutting plate (53) is arranged in the cavity (5), the abutting plate (53) is arranged between the limiting block (41) and the spring (52), and the abutting plate (53) abuts against the limiting block (41).

4. A tumor sampler as claimed in claim 3, wherein: and an anti-skidding convex line (411) is arranged on the surface of one side, away from the abutting plate (53), of the limiting block (41).

5. A tumor sampler as claimed in claim 3, wherein: and a rubber pad (531) is arranged on the surface of one side, close to the limiting block (41), of the abutting plate (53).

6. A tumor sampler as claimed in claim 1, wherein: and a raised handle (42) is arranged at one end of the operating rod (4) far away from the cavity (5).

7. The tumor sampler of claim 6, wherein: the surface of the convex handle (42) is wrapped with a rubber layer (421).

8. A tumor sampler as claimed in claim 1, wherein: the edge of the fitting groove (51) is provided with a guide surface (511).