Endoscopic guide tube with embedded coil spring
First Claim
1. A guide tube for an endoscope, the guide tube comprising:
- a tube body having a throughhole penetrated therethrough in an axial direction and a mouthpiece provided at a rearward end of the tube body, the tube body including a tube wall and an inner surface; and
a coil spring substantially completely embedded in the tube wall such that individual coils are surrounded by tube wall material and the inner surface is substantially smooth so as to prevent catching of the endoscope as it passes;
the tube body being cut at a slant to the axial direction at a forward end;
the mouthpiece having one of a circular cross-sectional shape and an elliptical cross-sectional shape, and including a rib at the forward end and a flange at the rearward end, the flange including a sealing film member with a slit or a perforation at the center.
1 Assignment
0 Petitions
Accused Products
Abstract
A guide tube comprising a tube body having a throughhole penetrated therethrough in the axial direction and a mouthpiece provided at the rearward end of the tube body, or comprising a tube body having a throughhole penetrated therethrough in the axial direction, a connector provided at the rearward end of the tube body and a mouthpiece engageable with and detachable from the connector, the tube body being embedded with a coil spring in the tube wall and cut slantly to the axial direction at the forward end, and the mouthpiece having a circular or elliptical cross-sectional shape, a rib at the forward end and a flange at the rearward end, and the connector being in a structure engageable with and detachable from the mouthpiece and having at the rearward end a sealing film member with a slit or a perforation at the center facilitates passage of an endoscope through the phalynx to the esophagus, simplifies washing of or aspiration from the esophagus or stomach and shortens the treating time and reduces a painful burden on patients much more, when the engageable and detachable mouthpiece is used.
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Citations
20 Claims
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1. A guide tube for an endoscope, the guide tube comprising:
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a tube body having a throughhole penetrated therethrough in an axial direction and a mouthpiece provided at a rearward end of the tube body, the tube body including a tube wall and an inner surface; and a coil spring substantially completely embedded in the tube wall such that individual coils are surrounded by tube wall material and the inner surface is substantially smooth so as to prevent catching of the endoscope as it passes; the tube body being cut at a slant to the axial direction at a forward end; the mouthpiece having one of a circular cross-sectional shape and an elliptical cross-sectional shape, and including a rib at the forward end and a flange at the rearward end, the flange including a sealing film member with a slit or a perforation at the center. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A guide tube for an endoscope, the guide tube comprising:
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a tube body including a tube wall and an inner surface and having a throughhole penetrated therethrough in an axial direction; a connector fixed to a rearward end of the tube body; and a slidable mouthpiece engageable with and detachable from the connector and slidable on the tube body when detached from the connector; a coil spring substantially completely embedded in the tube wall such that individual coils are surrounded by tube wall material and the inner surface is substantially smooth so as to prevent catching of the endoscope as it passes; the tube body being cut at a slant to the axial direction at a forward end; the mouthpiece including a rib at the forward end and a flange at the rearward end, and the connector being engageable with and detachable from the mouthpiece and including at the rearward end a sealing film member with a slit or a perforation at the center. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification