Cautery hemostatic unit

• US 4,708,136 A
• Filed: 02/06/1987
• Issued: 11/24/1987
• Est. Priority Date: 09/13/1984
• Status: Expired due to Term

• Current Assignee: Olympus Optical Company Ltd. (Olympus Corporation)
• Original Assignee: Olympus Optical Company Ltd. (Olympus Corporation)
• Inventors: Saito, Tatsuya
• Primary Examiner(s): Kamm, William E.
• Assistant Examiner(s): SHAY, RANDY CITRIN
• Application Number:
  US07/011,974
• Time in Patent Office: 291 Days
• Field of Search: 128/303.1, 128/303.11, 128/303.12, 128/303.17, 128/343, 128/399, 128/400, 128/401, 403/375, 219/229, 219/230
• US Class Current: 606/28
• CPC Class Codes: A61B 18/08 by means of electrically-heated probes
• CPC Class Codes: A61B 2018/087 using semiconductors as heating element

Abstract

This invention is a cautery hemostatic unit which is deliverable through endoscope and used for stopping hemorrhage by cauterizing bleeding wound, is to be attached to the distal extremity of sheath, and forms a gutter-like nozzle which communicates with water channel of the above-mentioned sheath in direction of outer axis of cautery probe wherein a thermal element is incorporated, and the angle of this nozzle is set so that water may be jetted out linearly along the direction of the outer axis of probe. This unit fixes the main unit that composes the above-mentioned probe and a cap with a joint connector which permits freely jointing and disconnecting.

Claims

1. A cautery hemostatic unit deliverable through a tool channel of an endoscope comprising:

(a) a tubular main body part having proximal and distal ends attached at its proximal end to a flexible sheath, said main body part having a through-hole in the direction of the central axis and a plurality of slotted longitudinal channels formed on the outer surface of the main body;

(b) an electrically energized heating means inserted into said through-hole at the distal end of said main body part;

(c) a tubular cap having a closed, hemispherical end and a plurality of slots open to the proximal end corresponding in number and radial position to said slots on said main body part, said cap having a non-adherent outer coating and an inner diameter sized so as to fit snugly over the distal portion of said main body part;

(d) means for detachably securing said cap on said main body part;

(e) means for electrically connecting said heating means to an external controller through said main body part and said sheath; and

(f) means for delivering a non-toxic liquid through said sheath to said slots in said main body part wherein said slots on said main body part terminate distally, with a gentle slope to the surface of the main body, at a point not less than the radius of curvature of the hemispherical portions of said cap from the distal extremity of the cap, said slope having an angle of curvature which directs said non-toxic liquid at an angle of not more than 20°

to the longitudinal axis of said main body.

2. A cautery hemostatic unit according to claim 1 wherein the means for detachably securing said cap to said main body part comprises a fixed pin inserted into an implant hole formed in the surface of said main body, said pin having a projecting portion means for insertion into an engaging notch formed on the inner surface of said cap when said cap is slid over the end of said main body part.

3. Cautery hemostatic unit of claim 2 wherein the securing means comprises a projection on the cap and a joint hole on the main body.