Expandable anchor mechanism for use in endoscopic biopsy channel
AssigneeFuji Photo Optical Co., Ltd.
InventorShuji Komi
Life of this patent
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Abstract
An expandable anchor mechanism for tentatively fixing a flexible tubular section of a bioptic or surgical treating instrument inserted in a biopsy channel of an endoscopic insertion rod. During a bioptic or surgical treatment, a fore end portion of the treating instrument is fixedly gripped by the anchor mechanism to stabilize a movable operating member of the instrument which is protruded into a body cavity from the distal end of the biopsy channel. The anchor mechanism includes an anchor control means for remote-controlling an anchor member to and from an expanded state projecting into the biopsy channel to grip a treating instrument and a flatly contracted state permitting movements of the treating instrument in the biopsy channel.
Claims14
An endoscope comprising:
- an endoscopic insertion rod having a biopsy channel;
- a treating instrument adapted to be inserted in the biopsy channel from a proximal end portion of the biopsy channel;
- an instrument anchor located in the biopsy channel at a distal end portion of the biopsy channel so as to surround an outer surface of said treating instrument, said instrument anchor being expandable so as to apply pressure to said outer surface of said treating instrument to stably secure said treating instrument to an inner surface of the biopsy channel in said endoscopic insertion rod;
- and
- an anchor controller which controls an expansion of said instrument anchor.
Dependencies are inferred from the claim text.