Endoscopic instrumentation apparatus

• US 4,345,589 A
• Filed: 05/12/1980
• Issued: 08/24/1982
• Est. Priority Date: 05/15/1979
• Status: Expired due to Term

• Current Assignee: Richard Wolf GmbH (Richard & Annemarie Wolf- Stiftung)
• Original Assignee: Richard Wolf GmbH (Richard & Annemarie Wolf- Stiftung)
• Inventors: Hiltebrandt, Siegfried
• Primary Examiner(s): Thaler, Michael H.
• Application Number:
  US06/148,755
• Time in Patent Office: 834 Days
• Field of Search: 128/4, 128/6, 128/7, 128/8, 128/347, 128/348, 128/303.15, 128/329 R
• US Class Current: 600/114
• CPC Class Codes: A61B 1/00105 characterised by modular construction
• CPC Class Codes: A61B 1/00135 Oversleeves mounted on the endoscope prior to insertion
• CPC Class Codes: A61B 1/12 with cooling or rinsing arrangements
• CPC Class Codes: A61B 17/3474 Insufflating needles, e.g. Veress needles

Abstract

This invention relates to endoscopic instrumentation apparatus and comprises a puncture cannula and a related hollow mandrel and optical system connectible to a coupling element of the puncture cannula; a hollow cylindrical intermediate element is also connectible to said coupling element of the puncture cannula and there are valved connectors fitted to the puncture cannula and the hollow mandrel, said valved connectors also being connectible to an automatic gas supply. The coupling element of the cannula is constituted by a hollow shaft which is installed for displacement against a spring towards a proximal end of the cannula; the hollow mandrel extends distally beyond an oblique face of the cannula and the intermediate element and the cannula are traversed by a connectible optical system which projects distally at least beyond the oblique face of the puncture cannula.

The apparatus can be used for performing laparoscopy and culdoscopy operations or examinations.

Claims

1. Endoscopic instrumentation apparatus for performing laparoscopy and culdoscopy, comprising:

(a) a puncture cannula presenting a connection for a gas supply having a distal oblique face and a proximal cylindrical casing in which a coupling element constituted by a hollow shaft is installed for displacement against a spring toward the proximal end,

(b) a hollow mandrel presenting a connection for a gas supply and a related optical system, each of which is respectively and separately connectible to said coupling element of said puncture cannula and when so connected each extending distally beyond said oblique face of said puncture cannula,

(c) a hollow contractible cylindrical intermediate element comprising contractible parts reducible in length against a spring therein and also connectible to said coupling element of said puncture cannula, said interemediate element being combined with and traversable by an optical system longer than the first when connected therewith and of a length to project distally at least beyond said oblique face of said puncture cannula,

(d) the contractible length of the intermediate element resulting in the distal end of the longer optical system therein projecting further beyond the oblique face of the cannula by the length of the contraction so the distal end of the second-named optics may be brought that much closer to the object,

(e) wherein said intermediate element comprises a first hollow cylinder closed off at its distal end by a coupling element complementally engaging in said coupling element of said puncture cannula, a second hollow cylinder closed off at its proximal end and being displaceable in said first hollow cylinder toward the distal end against a spring by means of handles, and wherein a proximal delimitation of said second displaceable, hollow cylinder is provided with a coupling element similar to that of said hollow shaft of said puncture cannula.