JPS63111842A - Needle base for biopsy needle - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to the structure of a needle base for a biopsy needle, and belongs to a medical injection and puncture device.

[Background of the invention]

Conventional double-needle biopsy needles have a structure that requires both hands to operate the biopsy needle to collect and collect a piece of tissue from a patient's diseased area. However, in clinical practice, there are times when a patient is forced to perform other tasks with one hand at the same time due to treatment, while both hands are occupied by operating the double-needle biopsy needle. However, it lacked mobility and was inconvenient.

[Purpose of the invention]

In pursuit of the above-mentioned mobility, the present invention provides a biopsy needle that is configured to be able to collect and recover a piece of diseased tissue from a patient with a one-handed system that can be easily operated with one hand, and has a biopsy needle that is more mobile than ever before. The purpose is to provide the following.

[Summary of the invention]

As described above, the present invention is directed to the inner and outer needle bases of a double needle, which has a structure that allows the biopsy needle, which is a double needle, to be easily manipulated with one hand in clinical practice to provide maneuverability. . The outline is detailed below. In order to easily collect and collect tissue pieces from the patient's affected area with one hand operation, the inner needle base is held between the second fingers and molded integrally with the protruding outer needle base at 17. Lightly press the end of the sliding limit locking part of the inner needle base sliding device provided in the same way, align the inner and outer needle tips of the double needle, and puncture the patient's affected area. Next, hold the outer needle base between your second and third fingers, and use your second finger to gently move the inner needle base that is aligned with the end of the sliding device of the inner needle base 4 in the above state. Press the entire sliding section and simultaneously puncture the tissue piece of the patient's affected area with the inner needle's cutting edge by exposing the entire exposed length of the inner needle's cutting edge from the outer needle light of the double needle. Hold the inner needle base between your second and third fingers, lightly press the protruding end of the sliding device for the inner needle base with your second finger, and puncture the inner needle as described above to collect the tissue piece. The blade tip is housed in the outer needle and the double needle in that state is removed from the patient. Next, in order to collect the collected tissue piece into the testing instrument, the outer needle base is held between the second and third fingers, and the second finger is aligned with the end of the slider for the inner needle base. The inner needle base is pushed lightly over the entire sliding section to expose the inner needle cutting edge, and the cutting edge of the inner needle discharges the sampled tissue piece into the testing instrument. With these operations configured according to the present invention, the patient's affected tissue piece can be easily collected with one hand.

[Embodiments of the invention]

FIG. 1 is a side cross-sectional view of the needle base portions of the inner and outer needles of a double needle according to a conventional embodiment. The double needle top is constructed by connecting an outer needle 1a to an outer needle base 1 and having a cutting edge 1b, and connecting an inner needle 2a to an inner needle base 2 and having a cutting edge 2b. The operation on the double needle is carried out by sliding the sliding rod 2c of the inner needle base 2 over the entire length of the sliding part 1c of the outer needle base 1, and the cutting edge 1 of the outer needle 1a and the inner needle 2a is
b, 2b are aligned and perform operations such as puncturing the affected area or removing the puncture from the affected area and collecting tissue pieces (not shown) into the outer needle 1a.Next, move the sliding rod 2c of the inner needle base 2 to the outer needle base. Push and slide the entire length of the sliding portion 1c in the direction of the cutting edge to expose the inner needle cutting edge 2b from the outer needle cutting edge 1b and inserting the inner needle cutting edge 4b into the affected tissue of the patient.
puncture or collect the collected tissue piece into a testing instrument,
These operations are performed to collect or collect tissue pieces from the patient's affected area, but these operations are extremely difficult to perform with one hand and are usually performed with both hands.

FIG. 2 is a side sectional view of the needle base of the inner and outer needles in one embodiment of the present invention. The double needle top has an outer needle 3a coupled to an outer needle base 3 to have a cutting edge 3b, and an inner needle 4a to an inner needle base 4 to have a cutting edge 4b. Outer needle base 3 on the needle
The sliding device 3C is integrally formed on the shoulder portion 3d, and a locking portion 3f for closing the sliding device 3C is formed and provided, and the sliding device 3C has a sliding portion and a sliding limiting locking portion. 3e and outer needle base 3
The outer needle base 3 is configured by forming and providing a locking portion 3f that closes to the outer needle base 3. The inner needle base 4 on the double needle is provided with a fitting hole 4c which allows the inner needle base 4 to fit into the sliding part of the sliding device 3c, slide and separate, and to freely perform these operations. A hole 4c is formed to have a size that allows the sliding limiting locking portion 3ρ of the sliding device 3c to be released from the engagement, and a hole 4c that can be freely removed from the sliding device 3. When puncturing the patient's affected tissue with a double needle, it can be easily operated with one hand, and the outer needle base 3 and the sliding device 3c are closed and fixed with the locking part 3f.
Sliding restriction of the sliding device 3c for the inner needle base 4, which is integrally molded onto the outer needle base 3 in a protruding state with the second finger while holding the inner needle base 4 between the second and third fingers. Lightly (push) the end of the locking part 3e,
The inner and outer needle tips 3b and 4b on the double needle are aligned and punctured into the patient's affected area (not shown). Next, hold the outer needle base 3 between the second and third fingers, and use the second finger to touch the end of the sliding limiting locking portion 3e of the sliding device 3c for the inner needle base 4 in the above state. Lightly press the aligned inner needle base 4 and the entire sliding section of the sliding device 3c to move the inner needle base 4 from the cutting edge 3b of the outer needle 3a on the double needle to the cutting edge 4b of the inner needle 4a. The cutting edge 4b of the inner needle 4a is simultaneously punctured into a tissue piece (not shown) in the patient's affected area while the entire length l that can be exposed is exposed. Next, hold the inner needle base 4 between your second and third fingers, and use your second finger to hold the end of the sliding limiting locking portion 3e of the protruding inner needle base 4 sliding device 3c. Press lightly,
The cutting edge 4b of the inner needle 4a from which the tissue piece was collected by puncturing as described above.
is placed in the outer needle 3a, and the double needle in its current state is removed from the patient. Next, in order to collect the collected tissue piece into a testing instrument (not shown), the outer needle base 3 is held between the second and third fingers, and the inner needle base 4 is inserted between the second and third fingers. The inner needle base 4, which is aligned with the end of the sliding locking part 3e of the sliding device 3c, is pushed lightly over the entire section of the sliding part to expose the length l of the cutting edge 4b of the inner needle 4a. , the cutting edge 4b of the inner needle 4a discharges the collected tissue piece into the testing instrument. Furthermore, when injecting a medicinal solution from the outer needle 3a to the affected area (not shown), the sliding device 3C is opened and a syringe barrel (not shown) is connected to the joint 3g of the outer needle base 3, and the medicinal solution is injected. .

〔Effect of the invention〕

As described above, according to one embodiment of the present invention, the structure of the double weighted outer needle base 3, the sliding device 3C1, the inner needle base 4, the fitting hole 4C1 and the locking part 3e or 3f allows the patient to Puncture into the affected area,
Operations such as sampling and collection of tissue pieces from the affected area can be easily performed with one hand, and it has the effect of having outstanding operability compared to the conventional two-handed operation. are doing.

[Brief explanation of the drawing]

FIG. 1--A side sectional view of a previous embodiment. Figure 2 - Side sectional view of one embodiment of the invention. Top--Double needle. 1.-Outer needle base. la-・outer needle, lb・
-The tip of the sword. IC-sliding part, 2-inner needle base. 2a-Inner needle. 2b
...-Blade tip. 2cm sliding rod. Main: Double needle. 3-Outer needle base, 3a--Outer needle, 3b-Blade tip. 3cm...Sliding device. 3d--Shoulder part, 3e-Sliding limit locking part. 3f, 3f
- Closing catch. 3g-Joint. 4-.-Inner needle base. 4a
- 11 inner needle, 4b - cutting edge. 4cm fitting hole. L-Sliding part,
l-.-Exposed length of the cutting edge of the inner needle 4a. Applicant: Ryo Sakahara, Representative Director of Heko Electric Manufacturing Co., Ltd. 4. Second needle / 11.・ Ri E nail ■ /, 1. ,... Culm seal/l,... 7!7:L

Claims (1)

[Claims] In the needle base of a biopsy needle with a double-needle structure in which the inner needle is built inside the outer needle, the outer needle base is integrated with a sliding device that allows the inner needle base to be slid into and removed from its shoulder. The sliding device is formed and provided with a locking portion that closes to the outer needle base when sliding and a locking portion for restricting sliding of the inner needle base, and the inner needle base is fitted into the sliding device. A needle base for a biopsy needle, characterized in that a fitting hole is formed and provided so that the fitting hole can be freely moved and removed.