MICHAEL C RIOPEL
Optometry in Ipswich, MA
License number
Massachusetts 1396
Expiration Date
Mar 7, 1991
Type
Dispensing Optician
Address
Address
Ipswich, MA 01938
Professional information
Reinforced Catheter Which Gets Softer Towards The Distal Tip
US Patent:
5792124, Aug 11, 1998
Filed:
Jan 3, 1997
Appl. No.:
8/778561
Inventors:
John B. Horrigan - Merrimack MA
Michael C. Riopel - Ipswich MA
Michael C. Riopel - Ipswich MA
Assignee:
Medtronic, Inc. - Minneapolis MN
International Classification:
A61M 2500
US Classification:
604282
Abstract:
The present invention comprises a catheter and method of manufacture. The catheter includes an elongated core having a unitary lubricous liner and a reinforcement. The lubricous liner defines at least one lumen. The lubricous liner has the reinforcement over the its outer diameter and fused to the lubricous liner. The reinforcement terminates proximal to the distal end of the lubricous liner. The catheter also has an elongated shaft tube which defines a shaft tube lumen. The shaft tube lumen is sized to receive the core, the core which extends longitudinally through the shaft tube lumen. The shaft tube is fused to the core. The catheter also has an elongated transition tube which defines a transition tube lumen. The transition tube lumen is sized to receive the core which extends longitudinally through the transition tube lumen. The distal end of the shaft tube is fused to the proximal end of the transition tube.
Catheter Having Oval Aspiration Lumen And Method Of Making
US Patent:
8298210, Oct 30, 2012
Filed:
Oct 26, 2005
Appl. No.:
11/259004
Inventors:
Lee Core - Cambridge MA, US
Michael Papa - Beverly MA, US
Michael Riopel - Ipswich MA, US
Michael Papa - Beverly MA, US
Michael Riopel - Ipswich MA, US
Assignee:
Medtronic Vascular, Inc. - Santa Rosa CA
International Classification:
A61M 25/00
US Classification:
604527, 604524, 604525, 604526, 604528
Abstract:
Catheters for aspiration of thrombotic, atherosclerotic or other particulate embolic debris from a blood vessel. An elongate flexible aspiration tube has an aspiration lumen defined by a reinforced tube wall. A guidewire tube is secured alongside the aspiration tube extending proximally from a distal end thereof to define either over-the-wire or single operator catheter configurations. The portion of the aspiration tube alongside the guidewire tube has an oval transverse cross section with a minor axis extending transversely through the guidewire tube. The oval cross section of the aspiration tube improves the catheter's efficient use of cross sectional space by making the overall catheter transverse cross section nearly equal in orthogonal dimensions. Methods of making aspiration catheters are also disclosed, including permanently deforming the portion of the aspiration tube into an oval transverse cross section.
Composite Laminated Catheter With Flexible Segment And Method Of Making Same
US Patent:
8303569, Nov 6, 2012
Filed:
Nov 21, 2006
Appl. No.:
11/562042
Inventors:
Jonathon M. Lobbins - Burlington MA, US
Michelle Provost - North Andover MA, US
Lee Core - Cambridge MA, US
Michael Papa - Beverly MA, US
Michael Riopel - Ipswich MA, US
Michelle Provost - North Andover MA, US
Lee Core - Cambridge MA, US
Michael Papa - Beverly MA, US
Michael Riopel - Ipswich MA, US
Assignee:
Medtronic Vascular, Inc. - Santa Rosa CA
International Classification:
A61M 25/00, B29C 65/00
US Classification:
604525, 156229
Abstract:
A medical catheter including a composite laminated shaft having a longitudinal segment that is mechanically deformed to have reduced and varying stiffness. A method of making the catheter is also disclosed.
Composite Laminated Catheter With Flexible Segment And Method Of Making Same
US Patent:
8308712, Nov 13, 2012
Filed:
Apr 19, 2006
Appl. No.:
11/407000
Inventors:
Michelle Provost - North Andover MA, US
Lee Core - Cambridge MA, US
Michael Papa - Beverly MA, US
Michael Riopel - Ipswich MA, US
Lee Core - Cambridge MA, US
Michael Papa - Beverly MA, US
Michael Riopel - Ipswich MA, US
Assignee:
Medronic Vascular, Inc. - Santa Rosa CA
International Classification:
A61M 25/00, B29C 53/80
US Classification:
604527, 156229
Abstract:
A medical catheter including a composite laminated shaft having a segment that is mechanically deformed to have reduced stiffness.
Method Of Soft Tip Forming
US Patent:
5811043, Sep 22, 1998
Filed:
Sep 19, 1996
Appl. No.:
8/724266
Inventors:
John B. Horrigan - Merrimack MA
Michael C. Riopel - Ipswich MA
Michael C. Riopel - Ipswich MA
Assignee:
Medtronic, Inc. - Minneapolis MN
International Classification:
B29C 4302, B29C 6502
US Classification:
264138
Abstract:
The present invention comprises a catheter method of manufacture. The method includes the provision of a subassembly of a lubricious liner and reinforcement. Over the subassembly, a shaft tube, transition tube, and soft tip tube are placed in an abutting relationship to each other, forming an assembly. A first tube of heat shrink is advanced over the assembly, heat is applied to fuse the assembly, and the first heat shrink is removed. Subsequently, the soft tip of the catheter is shaped using a second tube of heat shrink, which is placed over the distal end of the assembly. Heat is applied to the second heat shrink to cause the tip material to flow and to draw the tip material over the distal end of the lubricious liner. The second heat shrink is removed, completing the catheter manufacture.
Aspiration Catheter With Tracking Portion
US Patent:
7294117, Nov 13, 2007
Filed:
Aug 20, 2004
Appl. No.:
10/922081
Inventors:
Michael John Papa - Beverly MA, US
Michael Charles Riopel - Ipswich MA, US
Michael Charles Riopel - Ipswich MA, US
Assignee:
Medtronic Vascular, Inc. - Santa Rosa CA
International Classification:
A61M 29/00
US Classification:
60410304, 60416413
Abstract:
A catheter having one or more radially expanded portions that comprise a guidewire lumen. The guidewire lumen and the main lumen of the catheter are not separate and share the same fluid space. The catheter maintains a large, circular lumen for aspiration or delivery. The catheter is made by lacing a guidewire lumen mandrel through openings made in the catheter shaft and then forcing the shaft to expand radially to create a guidewire lumen.