Endoscope having forceps channel
OwnerTatsuya SUGISAWAinventor
Life of this patent
Estimating the term…
Abstract
An endoscope of a transnasal type includes an elongated tube for entry in a patient's body. A steering mechanism is provided in the elongated tube and on a proximal side from a distal end thereof, and bendable for changing a direction of the distal end. A forceps channel is formed through the elongated tube, for passing a treatment device to advance through the distal end. A constituent component is inserted in the elongated tube, disposed outside the forceps channel, and having an uneven thickness uneven within the steering mechanism in a direction transverse to an axial direction of the elongated tube, for extending in a tube lumen within the elongated tube. Specifically, the constituent component includes an air/water supply channel, or is an optical fiber bundle.
Claims24
An endoscope comprising:
- an elongated tube for entry in a body;
- a steering mechanism, provided in said elongated tube and on a proximal side from a distal end thereof, and bendable for changing a direction of said distal end;
- a forceps channel, formed through said elongated tube, for passing a treatment device to advance through said distal end;
- a constituent component, inserted in said elongated tube, disposed outside said forceps channel, and having an uneven thickness uneven within said steering mechanism in a direction transverse to an axial direction of said elongated tube, for extending in a tube lumen within said elongated tube.
An endoscope comprising:
- an elongated tube for entry in a body;
- a steering mechanism, provided in said elongated tube and on a proximal side from a distal end thereof, and bendable for changing a direction of said distal end;
- plural wire guide structures, disposed along an inner wall of said steering mechanism in an axial direction of said elongated tube, for receiving insertion of plural pull strips for bending said steering mechanism upon pull on a proximal side of said elongated tube;
- a forceps channel, formed through said elongated tube, disposed to extend on an axis thereof at least within said steering mechanism, for passing a treatment device to advance through said distal end;
- a constituent component, inserted in said elongated tube, and contained in one of plural regions defined by splitting with said inner wall of said steering mechanism, an outer wall of said forceps channel, and said plural wire guide structures, wherein at least a portion of said constituent component is contained in said steering mechanism and has an elliptic sectional shape, which has a long axis positioned to extend in an arcuate direction of a sectional shape of said elongated tube, and a short axis positioned to extend in a radial direction of said elongated tube.
An endoscope comprising:
- an elongated tube for entry in a body;
- a steering mechanism, provided in said elongated tube and on a proximal side from a distal end thereof, and bendable for changing a direction of said distal end;
- plural wire guide structures, disposed along an inner wall of said steering mechanism in an axial direction of said elongated tube, for receiving insertion of plural pull strips for bending said steering mechanism upon pull on a proximal side of said elongated tube;
- a forceps channel, formed through said elongated tube, disposed to extend on an axis thereof at least within said steering mechanism, for passing a treatment device to advance through said distal end;
- a constituent component, inserted in said elongated tube, and contained in one of plural regions defined by splitting with said inner wall of said steering mechanism, an outer wall of said forceps channel, and said plural wire guide structures;
- wherein at least one of said regions is a void region without containing said constituent component, or contains a constituent component having a smaller flexural rigidity than flexural rigidity of said constituent component contained in a remaining one of said regions.
Dependencies are inferred from the claim text.