Patent ID: 11889997
Assignee: GREEN MEDICAL SUPPLY., LTD
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A biopsy instrument comprising:
a base (100) formed to have a predetermined length;
a needle carrier (400) provided so as to be movable forwards and backwards in a longitudinal direction along an upper surface of the base (100);
a trigger (500) comprising a grip button (510) disposed at a rear end of the base (100) and a carrier connection bar (520) extending from the grip button (510) to the needle carrier (400) and detachably coupled to the needle carrier (400);
an outer needle (300) coupled to a front end of the needle carrier (400);
an inner needle (200) having a rear end coupled to the grip button (510) through an interior of the outer needle (300) and a collection recess (220) formed in a front end thereof to a predetermined depth;
an outer needle drive unit (600) provided between a rear end of the base (100) and the needle carrier (400), the outer needle drive unit having a spring (610) to provide a driving force so that the outer needle (300) is resiliently shot;
a casing (700) covering an upper portion of the base (100),
wherein the outer needle (300) and the inner needle (200) are configured to be moved to realize
a neutral state in which the outer needle (300) surrounds the inner needle (200) so as to be located at a same position as the front end of the inner needle (200), a loaded state in which the needle carrier (400) is moved backwards by the trigger (500) such that the outer needle (300) and the inner needle (200) are moved backwards together from the neutral state and such that the spring (610) is compressed, an inserted state in which the trigger (500) is moved forwards from the loaded state such that only the inner needle (200) is moved forwards into target tissue, and a collecting state in which the outer needle (300) is shot by the spring (610) to cut and collect the target tissue; and
a locking member (800) formed perpendicular to a movement route of the carrier connection bar (520), the locking member being configured to open and close the movement route of the carrier connection bar (520) so as to control movement of the outer needle (300) in the inserted state depending on whether an unlocking button (830), protruding to an outside of the casing (700), is pressed.