Imaging tissue or stone removal basket
First Claim
1. An endoscope having an imaging tissue or stone removal basket for removal of unwanted tissue or stone from an operative site within a body, said endoscope comprising:
- an elongated tube, having a distal end and a proximal end;
an elongated basket, having generally circular distal end with a central opening therein and a proximal end, said proximal end of said basket being attached to the periphery of said distal end of said tube, said basket being formed as a plurality of spaced flexible members which normally bow outwardly between said distal end and said proximal end thereof;
an optic fiber bundle slidably received within said tube, said optic fiber bundle having a distal end and a proximal end and a smaller diameter than said tube;
an elongated handle having a distal end, a proximal end and a central passageway therethrough whose diameter is substantially greater than the diameter of said optic fiber bundle;
a sleeve slidably received over said tube, having a distal end and a proximal end;
a slidable tubular arm having a distal end and a proximal end, within said passageway, said distal end thereof projecting beyond said distal end of said handle, releasably connectable to said proximal end of said sleeve, said optic fiber bundle extending centrally through said arm within said passageway and having a diameter substantially smaller than the inner diameter of said arm;
slidable control means on said handle connected to said arm for extending and retracting said arm with respect to said distal end of said handle to extend and retract said distal end of said sleeve with respect to said basket; and
clamping means intermediate said ends of said handle for releasably holding said proximal end of said tube in a fixed position relative to said handle.
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Accused Products
Abstract
In accordance with this invention, an endoscope is provided which has an imaging tissue or stone removal basket for removal of unwanted tissue or stone from an operative site, such as a body passageway or cavity. The endoscope includes an elongated tube, having a distal end and a proximal end. An elongated basket having a circular distal end with a central opening therein and a proximal end which is attached to the periphery of the distal end of the tube is provided. The basket is formed as a plurality of spaced flexible members which normally bow outwardly between the distal end and the proximal end of the basket. An optic fiber bundle is slidably received within the tube and is of smaller diameter than the tube. Structure is provided for selectively adjusting the optic fiber bundle along the tube so that the distal end of the bundle is selectively located from a position within the circular distal end of the basket to a position at the distal end of the tube. Structure is also provided for introducing fluid under pressure through the tube from the proximal@end thereof to the distal end. The fluid flows around the optic fiber bundle to the distal end of the tube for improving visibility of the operative site. Also, the fluid under pressure can be used for dislodging unwanted tissue or stone.
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Citations
6 Claims
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1. An endoscope having an imaging tissue or stone removal basket for removal of unwanted tissue or stone from an operative site within a body, said endoscope comprising:
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an elongated tube, having a distal end and a proximal end; an elongated basket, having generally circular distal end with a central opening therein and a proximal end, said proximal end of said basket being attached to the periphery of said distal end of said tube, said basket being formed as a plurality of spaced flexible members which normally bow outwardly between said distal end and said proximal end thereof; an optic fiber bundle slidably received within said tube, said optic fiber bundle having a distal end and a proximal end and a smaller diameter than said tube; an elongated handle having a distal end, a proximal end and a central passageway therethrough whose diameter is substantially greater than the diameter of said optic fiber bundle; a sleeve slidably received over said tube, having a distal end and a proximal end; a slidable tubular arm having a distal end and a proximal end, within said passageway, said distal end thereof projecting beyond said distal end of said handle, releasably connectable to said proximal end of said sleeve, said optic fiber bundle extending centrally through said arm within said passageway and having a diameter substantially smaller than the inner diameter of said arm; slidable control means on said handle connected to said arm for extending and retracting said arm with respect to said distal end of said handle to extend and retract said distal end of said sleeve with respect to said basket; and clamping means intermediate said ends of said handle for releasably holding said proximal end of said tube in a fixed position relative to said handle. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification