Karyl Leigh Stapert

US Patent:

6645194, Nov 11, 2003

Filed:

Dec 21, 2001

Appl. No.:

10/026234

Inventors:

Roderick E. Briscoe - Rockford MI
Paul F. Rom - Kentwood MI
Karyl L. Stapert - Grand Rapids MI
David B. DeWindt - Grand Rapids MI
Ronald A. Devries - Zeeland MI
Steven R. Gundry - Redlands CA
William E. Sidor - Rockford MI

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61M 3100

US Classification:

604506, 604508

Abstract:

An obturator for a cannula includes an elongate member and a flexible disc. The cannula has proximal and distal ends and a lumen extending therebetween. The distal end of the cannula has a circular cross-section. The cannula also includes a first portion having a non-circular cross-section and at least one fluid aperture formed adjacent the distal end. The flexible disc of the obturator is coupled to a distal end of the elongate member, both of which are adapted to be telescopically received in the lumen of the cannula. The flexible disc is configured to restrict the flow of fluid, entering the at least one fluid aperture, through the lumen.

US Patent:

8167867, May 1, 2012

Filed:

Aug 16, 2007

Appl. No.:

11/893393

Inventors:

Roderick E. Briscoe - Rockford MI, US
Paul F. Rom - Kentwood MI, US
Karyl L. Stapert - Grand Rapids MI, US
David B. DeWindt - Grand Rapids MI, US
Ronald A. Devries - Zeeland MI, US
Steven R Gundry - Redlands CA, US
William F Sidor - Rockford MI, US

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61M 25/00

US Classification:

604526, 604275

Abstract:

A method of performing minimally invasive cardiac surgery includes the step of creating an access aperture into a patient's chest cavity, the access aperture being considerably smaller than a traditional cardiac surgery incision. A cannula is provided that has an oval portion with a longer major axis and a shorter minor axis and the cannula is inserted into the chest cavity through the access aperture.

US Patent:

20070083161, Apr 12, 2007

Filed:

Sep 1, 2006

Appl. No.:

11/469736

Inventors:

Roderick Briscoe - Rockford MI, US
Paul Rom - Kentwood MI, US
Karyl Stapert - Grand Rapids MI, US
David DeWindt - Grand Rapids MI, US
Ronald Devries - Zeeland MI, US
Steven Gundry - Redlands CA, US
William Sidor - Rockford MI, US

International Classification:

A61M 5/178

US Classification:

604164020, 604164110, 604093010

Abstract:

A method of performing minimally invasive cardiac surgery includes the step of creating an access aperture into a patient's chest cavity, the access aperture being considerably smaller than a traditional cardiac surgery incision. A cannula is provided that has an oval portion with a longer major axis and a shorter minor axis and the cannula is inserted into the chest cavity through the access aperture.

US Patent:

6447484, Sep 10, 2002

Filed:

Jan 23, 1998

Appl. No.:

09/012520

Inventors:

Roderick E. Briscoe - Rockford MI
Paul F. Rom - Kentwood MI
Karyl L. Stapert - Grand Rapids MI
David B. DeWindt - Grand Rapids MI
Ronald A. Devries - Zeeland MI
Steven R. Gundry - Redlands CA
William F. Sidor - Rockford MI

Assignee:

Medtronic, Inc. - Minneapolis MN

International Classification:

A61M 5178

US Classification:

60416402, 604 9601, 604264, 60416701

Abstract:

An obturator for a cannula includes an elongate member and a flexible disc. The cannula has proximal and distal ends and a lumen extending therebetween. The distal end of the cannula has a circular cross-section. The cannula also includes a first portion having a non-circular cross-section and at least one fluid aperture formed adjacent the distal end. The flexible disc of the obturator is coupled to a distal end of the elongate member, both of which are adapted to be telescopically received in the lumen of the cannula. The flexible disc is configured to restrict the flow of fluid, entering the at least one fluid aperture, through the lumen.