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1. US20090264794 - TISSUE BIOPSY NEEDLE APPARATUS

Office United States of America
Application Number 12065184
Application Date 05.09.2006
Publication Number 20090264794
Publication Date 22.10.2009
Publication Kind A1
IPC
A61B 10/02
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
10Other methods or instruments for diagnosis, e.g. for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
02Instruments for taking cell samples or for biopsy
Applicants OLYMPUS MEDICAL SYSTEMS CORP.
Inventors Kodama Hiroshi
Agents SCULLY SCOTT MURPHY &; PRESSER, PC
Priority Data 2005258242 06.09.2005 JP
Title
(EN) TISSUE BIOPSY NEEDLE APPARATUS
Abstract
(EN)

The present invention is intended to provide a tissue biopsy needle apparatus equipped with a protective cover which prevents a needle tube from being ejected unnecessarily when an urging member is compressed in preparation for ejection of the needle tube. For that, the tissue biopsy needle apparatus includes a spring 28 which ejects the needle tube 26; a drawing unit which draws the spring 28 to a compressed position, the drawing unit including a drawing knob 20 and a drawing tube 29; an operation switch 24 which causes the drawing unit to draw and hold the spring 28 at the compressed position and causes the spring 28 to be released from the compressed position, thereby ejecting the needle tube 26; a protective cover 23 which disables the operation switch 24 when the spring 28 is drawn and held at the compressed position; and an elastic tongue 23c and an abutting strip 29b which move the protective cover 23 from a working position to a non-working position of the operation switch 24 in accordance with drawing of the spring 28 to the compressed position by the drawing unit, the elastic tongue 23c being installed on the protective cover and the abutting strip 29b being installed on the drawing tube 29.