US 8,147,458 B2Granted

Multi-seal trocar system

AssigneeApplied Medical Resources Corporation

InventorsCharles C Hart, John R Brustad, Nabil Hilal, Said Hilal

Life of this patent

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Abstract

A multi-seal trocar system includes a plurality of co-axial sealing elements adapted for forming a seal with either a large or small instrument. Small and large sealing elements are disposed in an in-line arrangement such that a-single port is provided for instrument insertion. A zero seal is disposed distally of the sealing elements to seal a working channel of the system and to prevent backflow when no instruments are inserted. The small sealing element is configured such that insertion of a large instrument automatically moves the small sealing element out of its path, thereby avoiding contact with the large instrument.

Claims14

Dependent claims

A trocar system comprising:

a housing comprising a proximal portion and a distal portion;
a cap assembly comprising:
a cap coupled to the proximal portion of the housing and having an orifice therethrough,
a plurality of protectors in a rest state extending proximally away from the orifice and outside of and away from the cap and the housing, and
a small-sized seal element coupled to the protectors;
a guide assembly disposed at least in part within the housing, distal to the cap assembly, the guide assembly comprising:
a tube, and
a large-sized seal disposed at a distal portion of the tube, substantially coaxial with the small-sized seal element;
and
a zero seal element disposed at least in part within the housing, substantially coaxial with the large-sized seal element and the small-sized seal element, the zero seal element comprising a distal end disposed adjacent to the distal portion of the housing, and distal to the small-sized seal element and the large-sized seal element.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/208,000Filed 10 Sep 2008 · continuation
Priority: 13 May 2004
Published: US 2009/0005739 A11 Jan 2009
Granted: 3 Apr 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification3 codes

A61B 17/3462
Trocars; Puncturing needles: with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with…
A61B 2017/3464
With means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments,…: with…
A61B
Medical diagnosis and surgery

Family

Application10/495,671Parent of this continuation · filed 13 May 2004
US 2009/0005739 A1Pre-grant publication · published 1 Jan 2009
US 7,438,702 B2Parent of this continuation
US 2005/0033342 A1Published application
US 8,147,458 B2This patent

From the US filing history. Foreign family members aren’t listed.

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