Detachable insulating insert for use in a resectoscope

Patent metadata

Field	Value
Publication number	US-11819264-B2
Application number	US-202016775723-A
Country	US
Kind code	B2
Filing date	Jan 29, 2020
Priority date	Feb 5, 2019
Publication date	Nov 21, 2023
Grant date	Nov 21, 2023

Abstract

An electrically insulating insert for detachable connection to the distal end region of a resectoscope shaft, characterized in that the insulating insert has a hollow portion with an elongate cavity for the passage of pass-through instruments, and that the insulating insert has fastening means for detachable connection to the resectoscope shaft. An electrode instrument is connected to this insulating insert and to a resectoscope including the same.

First claim

The invention claimed is:

1. An electrically insulating insert for detachable connection to a distal end region of a resectoscope shaft, the insulating insert comprising:
a hollow portion with an elongate cavity for passage of pass-through instruments, and
a fastening means for detachable connection to the resectoscope shaft, the fastening means comprising:
a radial thickening of the insulating insert in the hollow portion thereof, the radial thickening including a larger outer diameter of the insulating insert relative to an outer diameter at a distal end of the hollow portion,
a part of a bayonet, screw, snap, clamp, or locking connection, and
a protruding locking element that is arranged on a fastening side of the hollow portion and is pointing towards an inside of the hollow portion,

wherein the radial thickening is configured to engage a radially inner surface of the distal end region of the resectoscope to detachably fasten the insulating insert to the resectoscope.

2. The insulating insert as set forth in claim 1 , wherein the fastening side of the hollow portion is an outer wall thereof.

3. The insulating insert as set forth in claim 1 , wherein the insulating insert is made of plastic.

4. The insulating insert as set forth in claim 3 , wherein the plastic is a thermostable plastic.

5. An electrode instrument for use in a resectoscope, the electrode instrument comprising:
a shaft portion, and
an electrode to which high-frequency current can be applied, the electrode being arranged at a distal end of the shaft portion,
wherein the electrode instrument is connected to the insulating insert as set forth in claim 1 and the electrode instrument and the insulating insert can be displaced axially relative to one another.

6. The electrode instrument as set forth in claim 5 , wherein the insulating insert comprises one or more connecting elements, in each of which a fork tube of the electrode instrument is supported in an axially displaceable manner.

7. A resectoscope for endoscopic surgery, the resectoscope comprising:
a tubular resectoscope shaft that comprises an elongate cladding tube and an inner tube that is arranged in the cladding tube, as well as rod-shaped optics,
the insulating insert as set forth in claim 1 , and
an electrode instrument including a shaft portion and an electrode to which high-frequency current can be applied, the electrode being arranged at a distal end of the shaft portion.

8. The resectoscope as set forth in claim 7 , wherein a proximal end region of a wall of the insulating insert is arranged between the cladding tube and the inner tube running inside the cladding tube.

9. The resectoscope as set forth in claim 7 , wherein:
the insulating insert is detachably connected to a distal end region of the cladding tube or of the inner tube, and
the cladding tube or the inner tube includes an engagement opening for a locking element of the insulating insert in order to form the detachable connection.

Assignees

• Winter & Ibe Olympus

Inventors

• Brockmann Christian
• Offt Andreas

Classifications

• A61B18/149 Primary

  bow shaped or with rotatable body at cantilever end, e.g. for resectoscopes, or coagulating rollers · CPC title

• A61B1/002

  having rod-lens arrangements (A61B1/055 takes precedence) · CPC title

• A61B1/00087

  Tools (A61B17/00234 takes precedence) · CPC title

• A61B2018/00083

  low, i.e. electrically insulating · CPC title

• A61B2018/00601

  Cutting · CPC title