Probe device for a resectoscope or another microinvasive instrument

Patent metadata

Field	Value
Publication number	US-2018235455-A1
Application number	US-201815900877-A
Country	US
Kind code	A1
Filing date	Feb 21, 2018
Priority date	Feb 21, 2017
Publication date	Aug 23, 2018
Grant date	—

Abstract

A probe device (50), for a resectoscope (10) or another microinvasive instrument for working or manipulating tissue, includes a probe shaft (60) with a cylindrical portion (66) for arrangement in an instrument shaft (20) and with a distal end for arrangement near a distal end of the instrument shaft (20), an effecting device at the distal end of the probe shaft (60), and a sealing device (70) with a probe shaft channel (76) in which the cylindrical portion (66) of the probe shaft (60) is arranged. The probe shaft (60) is movable relative to the sealing device (70) parallel to the longitudinal axis of the probe shaft (60) and parallel to the longitudinal axis of the probe shaft channel (76). The sealing device (70) is formed from metal or ceramic or from another non-elastic material and is connected permanently to the probe shaft (60).

First claim

1 . A probe device for a resectoscope or another microinvasive medical instrument for working or manipulating tissue, the probe device comprising:
a probe shaft with a cylindrical portion for arrangement in an instrument shaft and with a distal end for arrangement near a distal end of the instrument shaft; an effecting device at the distal end of the probe shaft; and a sealing device with a probe shaft channel in which the cylindrical portion of the probe shaft is arranged, wherein the probe shaft is movable relative to the sealing device parallel to the longitudinal axis of the probe shaft and parallel to the longitudinal axis of the probe shaft channel, wherein the sealing device is formed from metal or ceramic or from another non-elastic material and is connected permanently to the probe shaft.

2 . A probe device according to claim 1 , wherein
the sealing device has a conical sealing face which is provided and configured to bear sealingly on a corresponding conical sealing face on an instrument shaft.

3 . A probe device according to claim 1 , wherein
the probe shaft channel has an annular extension, in which a sealing element is arranged.

4 . A probe device according to claim 1 , wherein
the sealing device has a coupling device for a releasable mechanical connection of the sealing device to the distal end of a working element of a resectoscope or of another microinvasive instrument.

5 . A probe device according to claim 4 , wherein
the sealing device comprises an elastic latching device for forming a latched connection to the distal end of the working element of the resectoscope or of the other microinvasive instrument.

6 . A probe device according to claim 4 , wherein
the coupling device has a groove or another recess for receiving an elastic latching element at the distal end of the working element of the resectoscope or of the other microinvasive instrument.

7 . A probe device according to claim 4 , wherein
the sealing device comprises a catch or an L-shaped groove for forming a bayonet connection to the distal end of the working element of the resectoscope or of the other microinvasive instrument.

8 . A microinvasive medical instrument for working or manipulating tissue, the microinvasive medical instrument comprising:
an instrument shaft with a distal end and a proximal end; a working element for releasable connection to the proximal end of the instrument shaft and for releasable connection to a proximal end of an endoscope and for releasable connection to a proximal end of a probe shaft and for manual movement of the probe shaft relative to the instrument shaft, wherein a space for receiving the sealing device of a probe device, comprising the probe shaft with a cylindrical portion for arrangement in the instrument shaft and with a distal end for arrangement near a distal end of the instrument shaft, an effecting device at the distal end of the probe shaft and a sealing device with a probe shaft channel in which the cylindrical portion of the probe shaft is arranged, wherein the probe shaft is movable relative to the sealing device parallel to the longitudinal axis of the probe shaft and parallel to the longitudinal axis of the probe shaft channel, and the sealing device is formed from metal or ceramic or from another non-elastic material and is connected permanently to the probe shaft, is provided between the distal end of the working element and the proximal end of the instrument shaft.

9 . A microinvasive instrument according to claim 8 , wherein
a conical sealing face is provided at the proximal end of the instrument shaft and corresponds at least partially to a conical sealing face of a sealing device of the probe device.

10 . A microinvasive instrument according to claim 9 , wherein
an opening or for the endoscope shaft is provided at the distal end of the working element, and the opening for the probe shaft or for the endoscope shaft has a cross section which permits a movement of the probe shaft or of the endoscope shaft in the opening, during a rotation of the sealing device relative to the distal end of the working element.

11 . A microinvasive instrument according to claim 8 , wherein the microinvasive instrument is a resectoscope.

Assignees

• Storz Karl Se & Co Kg

Inventors

• Rehbein Stefan

Classifications

• A61B2018/0063

  Sealing · CPC title

• A61B1/307 Primary

  for the urinary organs, e.g. urethroscopes, cystoscopes · CPC title

• A61B1/018

  for receiving instruments · CPC title

• A61B1/00128

  mechanical, e.g. for tubes or pipes · CPC title

• A61B2018/00982

  combined with or comprising means for visual or photographic inspections inside the body, e.g. endoscopes · CPC title