CN209751110U - Biopsy sampler for oncology department - Google Patents

Abstract

This scheme discloses medical instrument technical field a biopsy sampler for oncology. Comprises a needle cylinder, a sampling needle and a vacuum pump; a wing plate extends out of the edge of the top of the needle cylinder, and a groove coaxial with the needle cylinder is arranged at the joint of the wing plate and the needle cylinder; a plug valve is arranged at a through hole at the top of the needle cylinder and comprises a fixed gasket, a movable gasket and a plug which are coaxially connected, the diameter of the fixed gasket is smaller than that of the movable gasket, the plug is positioned in the needle cylinder, and the movable gasket and the fixed gasket are positioned in the groove; the vacuum pump comprises an air cylinder and a piston rod, the piston rod is connected in the air cylinder in a sliding mode, and the outer diameter of the air cylinder is smaller than the diameter of the groove; the lower extreme of the inside inflator is equipped with the chamber that holds of "T" platform form, holds the chamber and is used for holding fixed shim and loose gasket. After the needle cylinder is sucked to the tumour tissue by the scheme of utilization, the vacuum pump is wholly taken down from the needle cylinder, the movable gasket is restored to the original state, and the gap formed between the movable gasket and the needle cylinder under the negative pressure effect is sealed up again, so that the tissue volume in the needle cylinder is avoided being reduced.

Description

Biopsy sampler for oncology department

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to biopsy sampler for oncology.

Background

The tumor is an abnormal lesion formed by the clonal abnormal hyperplasia of a certain cell of a local tissue picked up at the gene level under the action of various carcinogenic factors of an organism, but the tumor is also classified into benign and malignant, and the tumor needs to be sampled when pathological analysis is carried out. The biopsy sampling device can be successfully realized through an operation incision when a body surface tumor biopsy is clinically taken for a patient, but the operation incision is large, the wound of the patient is slowly healed, and great working difficulty is increased for medical staff. And the tumor tissue taken out by the operation is directly exposed in the air and is easy to be polluted, so that the accuracy of the detection result is influenced. In addition, an injector is adopted for sampling, the principle is that the tumor tissue is sucked by means of negative pressure generated during the extraction of the injector, although the sampling method has the advantage of small wound, the piston head of a common injector is smooth, the piston head slides in the needle cylinder of the injector after sampling, so that the pressure in the needle cylinder is increased to push the tumor tissue out of a part of the needle cylinder, the sampling amount is reduced, the detection is not facilitated, secondary suction is often needed, and unnecessary injury is caused to a patient.

SUMMERY OF THE UTILITY MODEL

the utility model aims at providing a biopsy sampler for oncology to the sample that solves current biopsy sampler and take out easily follows the landing in the sampler, leads to the technical problem that the sample volume is few.

The biopsy sampler for oncology in the scheme comprises a needle cylinder and a sampling needle, wherein the sampling needle is detachably connected to the lower end of the needle cylinder; the device also comprises a vacuum pump; a wing plate extends out of the edge of the top of the needle cylinder, and a groove coaxial with the needle cylinder is arranged at the joint of the wing plate and the needle cylinder; a plug valve is arranged at a through hole at the top of the needle cylinder and comprises a fixed gasket, a movable gasket and a plug which are coaxially connected, the diameter of the fixed gasket is smaller than that of the movable gasket, the fixed gasket is connected to the upper surface of the movable gasket, the plug is connected to the lower surface of the movable gasket, the plug is positioned in the needle cylinder, and the movable gasket and the fixed gasket are positioned in the groove;

The vacuum pump comprises an air cylinder and a piston rod, the piston rod is connected in the air cylinder in a sliding mode, and the outer diameter of the air cylinder is smaller than the diameter of the groove; the lower extreme of the inside inflator is equipped with the chamber that holds of "T" platform form, holds the chamber and is used for holding fixed shim and loose gasket.

the working principle of the scheme is as follows: before sampling, the bottom of the piston rod is pushed to the bottom of the air cylinder, so that the air in the air cylinder is discharged; since the outer diameter of the cylinder is smaller than the diameter of the groove on the wing, which is located at the top of the cylinder, the bottom of the cylinder can be inserted into the groove. The through hole department at the cylinder top is equipped with the cock valve, the cock valve includes coaxial coupling's fixed shim, activity gasket and stopper, the stopper is located the cylinder, and the diameter of fixed shim is less than the diameter of activity gasket, the fixed shim is connected at activity gasket upper surface, the inside lower extreme of inflator is equipped with the chamber that holds of "T" platform form, the setting that holds the chamber is used for holding activity gasket and fixed shim, such structure makes the inflator insert the recess after, activity gasket and fixed shim just imbed in the chamber that holds of "T" platform form simultaneously.

When the sampling needle is used for sampling, the sampling needle is punctured into the tumor of a patient, medical staff holds the needle cylinder, the needle cylinder is prevented from shaking, the piston rod is pulled outwards of the air cylinder, the movable gasket can be movably deformed, and under the action of negative pressure, the movable gasket can be bent towards the inner direction of the air cylinder, so that a gap is formed at the contact part of the needle cylinder and the movable gasket, and the sampling needle, the needle cylinder and the air cylinder are communicated at the moment, so that tumor tissues can be sucked into the needle cylinder under the action of the negative pressure.

The beneficial technical effect of this scheme is: after the needle cylinder was got with tumor tissue suction to this scheme of utilization, wholly taken off the vacuum pump from the needle cylinder, the movable gasket restores original state, with the negative pressure effect down with the gap that forms between the needle cylinder block up once more, and the sampling needle is usually more slender, the vacuum is also tiny, so outside air can not enter into the needle cylinder through the sampling needle basically under the condition that does not have the negative pressure in. At the moment, the gap is blocked by the movable gasket, so that the phenomenon that the tumor tissue is pushed out by increasing the internal pressure of the needle cylinder due to the entering of external air is avoided, and the problem that the sampling quantity is reduced due to the sliding of the piston head in the sampling process of the existing injector is solved. And outside air does not enter the needle cylinder, so that the tumor tissue is not polluted in a short time.

Further, the needle cylinder is in an inverted frustum shape. For the syringe of general use among the prior art, the external diameter increase of the syringe of the round platform form, the medical personnel of being convenient for when the sample on the one hand hold, on the other hand can not necessarily inspect after the sample, so can place the syringe vertically on the shelf of similar test-tube rack for it is all more convenient to place and take.

Further, fixed gasket, movable gasket and stopper integrated into one piece constitute the stopper valve, the stopper valve adopts silica gel to make. After the sampler used, each part all can be dismantled and opened and retrieve or disinfection used repeatedly, constitutes the cock valve with fixed shim, removable gasket and stopper integrated into one piece, convenient dismantlement like this, when cleaning and disinfecting, there was not the gap in the junction of fixed shim, removable gasket and stopper moreover for wash more thoroughly. The plug valve made of the silica gel material has the advantages of compact texture, difficulty in deep pollution, difficulty in deformation in cleaning, disinfection and use processes and long service life.

Further, the sampling needle includes needle tubing and stores up the appearance pipe, and the one end of needle tubing is the needle point, the other end of needle tubing and the one end intercommunication of storing up the appearance pipe, and the other end of storing up the appearance pipe adopts the lower extreme that can dismantle the mode intercommunication at the cylinder. The design can store the sucked tumor tissues in the sample storage tube, so that the tissues do not need to be stored in the needle cylinder, and when the detection is carried out, the sample storage tube only needs to be taken down from the needle cylinder, the needle cylinder is not polluted by the tumor tissues, and the targeted regular disinfection and sterilization can be carried out on different parts.

Further, the sample storage tube is in threaded connection with the needle cylinder. The connection stability can be ensured by the threaded connection mode, and the installation and the disassembly can be conveniently and quickly carried out.

Drawings

FIG. 1 is a schematic view of the mechanism of the needle cylinder and the sampling needle combination in the biopsy sampler for tumor according to the present invention;

Fig. 2 is a schematic structural view of a vacuum pump in the biopsy sampler for tumor of the present invention.

Detailed Description

the following is further detailed by the specific embodiments:

Reference numerals: the device comprises a wing plate 1, a groove 2, a syringe inner cavity 3, a syringe 4, a sample storage tube 5, a needle tube 6, a fixed gasket 7, a movable gasket 8, a holding ball 9, a piston rod 10, a gas cylinder 11, an upper containing cavity 12 and a lower containing cavity 13.

As shown in figure 1, the biopsy sampler for oncology comprises a needle cylinder 4 and a sampling needle, wherein the needle cylinder 4 comprises a needle tube 6 and a sample storage tube 5, one end of the needle tube 6 is a needle point, the other end of the needle tube 6 is communicated with one end of the sample storage tube 5, and the other end of the sample storage tube 5 is communicated with the lower end of the needle cylinder 4 in a threaded connection mode.

The needle cylinder 4 is in an inverted circular truncated cone shape, the edge of the top of the needle cylinder 4 extends out of the wing plate 1, the top of the wing plate 1 is higher than the top of the needle cylinder 4, and a groove 2 coaxial with the needle cylinder 4 is formed at the joint of the wing plate 1 and the needle cylinder 4; a plug valve is arranged at a through hole at the top of the inner cavity 3 of the needle cylinder and is made of silica gel; the plug valve comprises a fixed gasket 7, a movable gasket 8 and a plug which are coaxially connected, wherein the fixed gasket 7, the movable gasket 8 and the plug are integrally formed, the diameter of the fixed gasket 7 is smaller than that of the movable gasket 8, the fixed gasket 7 is connected to the upper surface of the movable gasket 8, the plug is connected to the lower surface of the movable gasket 8, the plug is located in the needle cylinder inner cavity 3, and the movable gasket 8 and the fixed gasket 7 are located in the groove 2.

As shown in fig. 2, the biopsy sampler for oncology further comprises a vacuum pump; the vacuum pump comprises an air cylinder 11 and a piston rod 10, the piston rod 10 is connected in the air cylinder 11 in a sliding mode, the top of the piston rod 10 is connected with a holding ball 9, the shape of the holding ball is matched with that of a palm after the palm is bent, and the holding is convenient; the outer diameter of the cylinder 11 is less than or equal to the diameter of the groove 2; the lower extreme of the inside of inflator 11 is equipped with "T" platform form holds the chamber, holds the chamber and holds the chamber 13 including holding chamber 12 and holding chamber 13 down on, and fixed gasket 7 can imbed and hold in chamber 12 on, and movable gasket 8 can hold in holding chamber 13 down.

Before sampling, the bottom of the piston rod 10 is pushed to the bottom of the air cylinder 11, so as to discharge the air in the inner cavity of the air cylinder 11; since the outer diameter of the cartridge 11 is smaller than or equal to the diameter of the groove 2 of the wing 1 and the wing 1 is located at the top of the cylinder 4, the bottom of the cartridge 11 can be inserted into the groove 2. The through hole at the top of the needle cylinder 4 is provided with a plug valve, the plug valve comprises a fixed gasket 7, a movable gasket 8 and a plug which are coaxially connected, the plug is positioned in the needle cylinder 4, the diameter of the fixed gasket 7 is smaller than that of the movable gasket 8, the fixed gasket 7 is connected to the upper surface of the movable gasket 8, the lower end inside the air cylinder 11 is provided with a T-shaped accommodating cavity, and the accommodating cavity is used for accommodating the movable gasket 8 and the fixed gasket 7, so that after the air cylinder 11 is inserted into the groove 2, the movable gasket 8 and the fixed gasket 7 are embedded into the T-shaped accommodating cavity at the same time, namely, the fixed gasket 7 can be embedded into the upper accommodating cavity 12, and the movable gasket 8 can be accommodated into the lower accommodating cavity 13.

When sampling, the sampling needle is punctured into the tumor of a patient, medical staff holds the needle cylinder 4 to avoid shaking of the needle cylinder 4 and pulls the piston rod 10 out of the air cylinder 11, the movable gasket 8 can movably deform, the movable gasket 8 can bend towards the inner direction of the air cylinder 11 under the action of negative pressure, so that a gap is formed at the contact part of the needle cylinder 4 and the movable gasket 8, and the sampling needle, the needle cylinder 4 and the air cylinder 11 are communicated at the moment, so that tumor tissues can be sucked into the sample storage tube 5 under the action of negative pressure.

The vacuum pump is wholly taken down from the needle cylinder 4, the movable gasket 8 is restored to the original state, the gap formed between the vacuum pump and the needle cylinder 4 is sealed up again under the action of negative pressure, the sampling needle is usually slender, the vacuum is small, and therefore the external air basically cannot enter the needle cylinder 4 through the sampling needle under the condition of no negative pressure. At the moment, the gap is blocked by the movable gasket 8, so that the phenomenon that the tumor tissue is pushed out by increasing the internal pressure of the needle cylinder 4 due to the entering of external air is avoided, and the problem that the sampling quantity is reduced due to the sliding of a piston head in the sampling process of the existing injector is solved. And the outside air does not enter the needle cylinder 4, ensuring that the tumor tissue is not polluted in a short time.

Claims (5)

1. The biopsy sampler for the oncology department comprises a needle cylinder and a sampling needle, wherein the sampling needle is detachably connected to the lower end of the needle cylinder; the method is characterized in that: the device also comprises a vacuum pump; a wing plate extends out of the edge of the top of the needle cylinder, and a groove coaxial with the needle cylinder is arranged at the joint of the wing plate and the needle cylinder; a plug valve is arranged at a through hole at the top of the needle cylinder and comprises a fixed gasket, a movable gasket and a plug which are coaxially connected, the diameter of the fixed gasket is smaller than that of the movable gasket, the fixed gasket is connected to the upper surface of the movable gasket, the plug is connected to the lower surface of the movable gasket, the plug is positioned in the needle cylinder, and the movable gasket and the fixed gasket are positioned in the groove;

the vacuum pump comprises an air cylinder and a piston rod, the piston rod is connected in the air cylinder in a sliding mode, and the outer diameter of the air cylinder is smaller than the diameter of the groove; the lower extreme of the inside inflator is equipped with the chamber that holds of "T" platform form, holds the chamber and is used for holding fixed shim and loose gasket.

2. The biopsy sampler of claim 1, wherein: the needle cylinder is in an inverted frustum shape.

3. The biopsy sampler of claim 2, wherein: the fixed gasket, the movable gasket and the plug are integrally formed to form the plug valve, and the plug valve is made of silica gel.

4. The biopsy sampler of claim 3, wherein: the sampling needle includes needle tubing and stores up the appearance pipe, and the one end of needle tubing is the needle point, and the other end of needle tubing communicates with the one end of storing up the appearance pipe, and the other end of storing up the appearance pipe adopts the lower extreme that can dismantle the mode intercommunication at the cylinder.

5. The biopsy sampler of claim 4, wherein: the sample storage tube is in threaded connection with the needle cylinder.