JPS6142572Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a biopsy needle for collecting biological tissue.

Conventionally, a Menghini needle for performing a biopsy of, for example, liver tissue consists of a mantle tube, a puncture needle inserted into the mantle, and a hollow biopsy needle that can be replaced with the puncture needle. Then, after passing the puncture needle through the abdominal wall with the puncture needle inserted into the mantle tube, the needle is removed and a biopsy needle is inserted in its place. A suction syringe is fitted into the rear end opening of the biopsy needle to aspirate it, and the liver tissue present at the tip of the biopsy needle punctured into the liver tissue is sucked up and collected.

However, the current situation is that after liver tissue is collected as described above, the wound in the liver is usually left as is and allowed to heal naturally through the self-healing action of the living body. As described above, the conventional biopsy method has been passive and dangerous because it does not allow special hemostatic treatment.

This invention was made with attention to the above circumstances,
The purpose is to provide a biopsy needle that is easy to handle, yet can hemostat the wound after a biopsy and ensure safety to the human body.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

Reference numeral 1 in FIG. 1 is a mantle tube of the Menghini needle, and a grip portion 2 is formed at the proximal end of this mantle tube 1. In addition, a rubber valve 3 is attached to the knob 2.
is installed to close the opening on the hand side.

A puncture needle 4 can be inserted into the mantle tube 1 in a detachable manner. FIG. 1 shows a state in which the puncture needle 4 is inserted into the mantle tube 1. That is, in the inserted state, the cutting edge 5 on the distal end side of the puncture needle 4 slightly protrudes from the distal end of the mantle tube 1. Further, a grip portion 6 is formed at the proximal end of the puncture needle 4.

Further, a biopsy needle 7, shown enlarged in FIG. 2, can be inserted into the mantle tube 1 in place of the puncture needle 4. The above medium needle for biopsy 7
The inner needle main body 7a is formed into a double tube structure consisting of an inner tube 8 and an outer tube 9.
A suction hole 10 for biological collection is formed by the inside of the
Further, the gap between the inner tube 8 and the outer tube 9 forms an injection hole 12 for injecting a fluid hemostatic adhesive 11 such as collagen. The distal end of the biopsy needle 7 has a cutting edge 13 and is adapted to pierce a living tissue 14. In addition, the inner pipe 8
An opening 15 into which a suction syringe (not shown) is removably fitted is attached to the proximal end.
is provided. A connection port 16 communicating with the injection hole 12 is formed at the proximal end of the outer tube 9, and a syringe 17 as shown in FIG. 3 can be connected to the connection port 16. . The syringe 17 consists of a cylinder 18 and a piston 19,
The mouth portion 20 of the cylinder 18 is inserted into the connection port 16 for connection. And cylinder 18
By loading the hemostatic adhesive 11 inside and pushing the piston 19, it is fed into the injection hole 12 of the biopsy needle 7.

In addition, the suction hole 1 for biological collection of the biopsy needle 7
0, a thin rod-shaped stopper rod 20 is loosely inserted into the stopper rod 20.
A protrusion 21 formed by bending the middle of the proximal end is brought into contact with the inner end of the opening 15 of the inner tube 8 to regulate its insertion depth. That is, the tip of the stopper rod 20 is regulated so as to be retracted deeper than the cutting edge 13 of the biopsy needle 7. Thus, the cutting edge 13 of the biopsy needle 7 is inserted into the biological tissue 14.
When punctured, a part of the biological tissue 14 is inserted into the inside of the suction hole 10, that is, into the tip of the suction hole 10, using the stopper rod 2.
It can be taken in until it hits the tip of 0.

Next, how to use the above embodiment will be explained.

First, as shown in FIG. 1, the inner puncture needle 4 is inserted into the mantle tube 1, and then the abdominal wall (not shown) is punctured and penetrated. After that, leave the mantle tube 1 as it is and remove the puncture needle 4, insert the biopsy needle 7 instead, and insert the tip of the biopsy needle 4 into the living tissue of the liver as shown in FIG. Stick to 14. A portion of the living tissue 14 thus enters the tip of the inner tube 8 of the biopsy needle 7. On the other hand, the opening 15 on the proximal side of the biopsy needle 7
For example, a suction syringe such as a syringe is connected to the suction hole 10 for suctioning the living body sample. As a result, the living tissue 14 that has entered the tip of the biopsy needle 7 is strongly sucked in and is taken in and held until it hits the tip of the stopper rod 20.

Then, in this state, the syringe 17 is connected to the connection port 16 of the biopsy needle 7. Then, the hemostatic adhesive 11 is applied to the injection hole 12 using the syringe 17.
The biopsy needle 7 is slowly pulled out while the hemostatic adhesive 11 is fed into the wound 21 and the hemostatic adhesive 11 is filled into the gap within the wound 21.

Therefore, when the biopsy needle 7 is pulled out from the living tissue 14, the damaged part of the wound 21 is completely filled with the hemostatic adhesive 11, so that bleeding can be completely prevented.

Thereafter, the biological tissue 14 can be collected by pulling out the biopsy needle 7 to the outside.

It should be noted that the present invention is applicable not only to the Menghini needle as in the above embodiment, but also to other biopsy needles such as the Silvermann needle.

As explained above, according to the present invention, a wound caused by collecting biological tissue can be filled with a hemostasis adhesive to close it and prevent bleeding. Therefore, danger due to bleeding can be prevented and safety can be ensured. Also,
The hemostasis treatment can be carried out by simple operations and is extremely practical, requiring no particularly sophisticated techniques.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a side sectional view of a mantle tube with an intermediate puncture needle attached, and FIG.
The figure is a side sectional view of the biopsy needle attached to the outer tube, FIG. 3 is a side sectional view of the syringe, and FIG. 4 is an explanatory view of the state of use. 1... Outer tube, 4... Medium needle for puncture, 7... Medium needle for biopsy, 10... Suction hole for biological collection, 11... Adhesive for hemostasis, 12... Injection hole, 14... Living body Tissue, 16... connection port, 17... syringe.

Claims (1)

[Scope of utility model registration request] A biopsy needle for collecting living tissue includes a mantle tube, a puncture needle inserted into the mantle tube, and a biopsy needle that can be inserted into the mantle tube in place of the puncture needle. The above-mentioned medium needle for biopsy has an injection hole for hemostatic adhesive in addition to the suction hole for biological collection in the medium needle body, and the hemostatic adhesive can be injected from the tip of the medium needle through this injection hole. A biopsy needle characterized by: