CN204542223U - A kind of tumor sampling device - Google Patents

Abstract

The utility model discloses a tumor sampling device, which comprises a negative pressure device and a sampling device. The sampling device includes a guide tube, a sampling tube and a needle. The negative pressure device includes an outer tube and an inner tube arranged inside the outer tube. The sampling tube is set in the guide tube, the needle is set at one end of the sampling tube, one end of the guide tube is provided with a guide end, the center of the guide end is provided with a through hole suitable for the needle, and the guide tube The other end is connected to the front end of the outer tube, and the other end of the sampling tube is extended into the outer tube to be sealed and connected to the front end of the inner tube. The inner tube is provided with a piston that is sealingly connected to the inner wall of the inner tube and a piston rod that is fixedly connected to the center of the rear side of the piston. , this technical solution uses a guide tube made of rubber tube to enter the human body according to the structure of the human body without causing pain to the patient. For example, if the tumor is longer than the bladder, it can enter through the urethra. The needle is pushed out from the guide tube to aspirate the tumor tissue.

Description

A tumor sampling device

technical field

The utility model relates to the technical field of medical equipment, in particular to a tumor sampling device.

Background technique

As we all know, clinically, patients can be successfully sampled through surgical incisions for body surface tumor biopsy samples. However, due to the greater pain caused by surgical incisions, syringes are generally used for sampling at present. tumor tissue. However, tumor sampling in some parts of the body cannot be achieved through surgical incisions. For example, although the bladder can absorb tumor tissue through a syringe, it cannot enter the bladder through the urethra. The cortex must be pierced to absorb tumor tissue, which still brings great pain to the patient. pain of. Therefore, we need to provide a tumor sampling device that performs painless tumor sampling according to the structure of the human body.

Utility model content

The technical problem to be solved by the utility model is to provide a tumor sampling device, which can perform painless tumor sampling according to the structure of the human body.

In order to solve the above technical problems, an embodiment of the present invention provides a tumor sampling device, including a negative pressure device and a sampling device, the sampling device includes a guide tube, a sampling tube and a needle, and the negative pressure device includes an outer tube and a device In the inner tube inside the outer tube, the sampling tube is set in the guide tube, the needle is set at one end of the sampling tube, one end of the guide tube is provided with a guide end, and the center of the guide end is provided with a The other end of the guide tube is connected to the front end of the outer tube, and the other end of the sampling tube extends into the outer tube and is connected to the front end of the inner tube in a sealed manner. The inner tube is provided with a piston that is sealed with the inner wall of the inner tube and connected with the rear end of the piston. Piston rod fixedly connected at the center of the side.

Preferably, the guide end has a spherical structure, and the guide tube is a rubber tube.

Preferably, the other end of the piston rod is vertically provided with a first push rod, and the rear end of the inner tube is provided with a vertically connected second push rod.

Preferably, the needle is located in the leading end and is slidably connected to the inner wall of the through hole.

The beneficial effects of the above-mentioned technical solution of the utility model are as follows: the structure is simple, the technology is reasonable, the guide tube made of rubber tube enters the human body according to the structure of the human body, and does not cause pain to the patient. For example, if the tumor is longer than the bladder, it can be Entering through the urethra, when the leading end of the guiding tube reaches the predetermined position, the needle is pushed out from the guiding tube to absorb the tumor tissue, and the operation is very convenient.

Description of drawings

FIG. 1 is a schematic structural view of an embodiment of a tumor sampling device of the present invention.

FIG. 2 is an enlarged schematic view of the leading end in FIG. 1 .

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, the following will describe in detail with reference to the drawings and specific embodiments.

The utility model provides a kind of tumor sampling device for existing deficiency, as shown in Figure 1, comprises negative pressure device and sampling device, and described sampling device comprises guide tube 4, sampling tube 3 and needle head 2, and described negative pressure device Including the outer tube 5 and the inner tube 6 arranged in the outer tube 5, the guide tube 4 is a rubber tube, because the rubber tube has soft characteristics, when the guide tube 4 enters the inside of the human body according to the structure of the human body, Tissue cells have a good protective effect, the sampling tube 3 is arranged in the guide tube 4, the needle 2 is arranged at one end of the sampling tube, and one end of the guide tube 4 is provided with a guide 1 end, and the guide tube 4 The other end is connected to the front end of the outer tube 5, and the other end of the sampling tube 3 extends into the outer tube 5 and is in sealing connection with the front end of the inner tube 6. When the leading end 1 reaches a predetermined position, the inner tube 6 is pushed to make the end of the needle 2 The guide end 1 can be slid out to sample the tumor tissue. The inner tube 6 is provided with a piston 9 which is sealingly connected to the inner wall of the inner tube 6 and a piston rod 10 fixedly connected to the center of the rear side of the piston 9. Through the matching piston 9 and the inner tube 10 to realize a negative pressure environment, so as to sample the tumor tissue, the other end of the piston rod 10 is vertically provided with a first push rod 8, and the tail end of the inner tube 6 is provided with a vertically connected second push rod 7. It is convenient to push the piston rod 10 and the inner tube 6 through the first push rod 8 and the second push rod 7 .

As shown in Figure 2, the guide end 1 has a spherical structure, which has a good protective effect on the tissue cells inside the human body, and the center of the guide end 1 is provided with a through hole that is compatible with the needle 2. The needle 2 is located in the guide end 1 and is slidably connected to the inner wall of the through hole, wherein the needle 2 is always located in the through hole.

The above is a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made. And retouching should also be regarded as the protection scope of the present utility model.

Claims (4)

1. A tumor sampling device, characterized in that it comprises a negative pressure device and a sampling device, the sampling device comprises a guide tube, a sampling tube and a needle, and the negative pressure device comprises an outer tube and an inner tube arranged in the outer tube, The sampling tube is set in the guide tube, the needle is set at one end of the sampling tube, one end of the guide tube is provided with a guide end, the center of the guide end is provided with a through hole matching the needle, and the guide The other end of the tube is connected to the front end of the outer tube, and the other end of the sampling tube is extended into the outer tube to be sealed and connected to the front end of the inner tube. The inner tube is provided with a piston that is sealingly connected to the inner wall of the inner tube and fixedly connected to the center of the rear side of the piston. pole. 2 . The tumor sampling device according to claim 1 , wherein the guiding end has a spherical structure, and the guiding tube is a rubber tube. 3 . 3. A tumor sampling device according to claim 2, characterized in that, the other end of the piston rod is vertically provided with a first push rod, and the tail end of the inner tube is provided with a vertically connected second push rod . 4. A tumor sampling device according to claim 2 or 3, wherein the needle is located in the leading end and is slidably connected to the inner wall of the through hole.