George J Purtell

US Patent:

5520663, May 28, 1996

Filed:

May 12, 1994

Appl. No.:

8/241627

Inventors:

Frank Patterson - Exeter NH
John Zhang - Arlington MA
George Purtell - Westford MA
James Culhane - Westborough MA

Assignee:

C. R. Bard, Inc. - Murray Hill NJ

International Classification:

A61M 2500

US Classification:

604256

Abstract:

An improved self-sealing gasket provides hemostasis while reducing the force required to move a catheter or guidewire positioned within the gasket. Slits formed on one surface of the gasket intersect with a central aperture formed on the opposite face of the gasket. An annular ring formed on the gasket assists in retaining the gasket within a catheter introducer. An annular shelf may be provided distally of the gasket to prevent dislodgement of the gasket if an instrument is inserted into the introducer off axially.

US Patent:

6358460, Mar 19, 2002

Filed:

Dec 23, 1999

Appl. No.:

09/472329

Inventors:

George Purtell - Westford MA
Peter D. Spohn - Brookline NH

Assignee:

TFX Medical Incorporation - Jaffrey NH

International Classification:

B29C 4704

US Classification:

264491, 264113, 264119, 264127, 26417126, 264245, 264296, 264320

Abstract:

Methods are disclosed for producing multi-layer peelable sheaths having formed tips, for use as medical introducer devices, e. g. , sheaths for inserting a catheter or the like into a patient. The methods include the steps of preparing a first composition blend for forming an inner layer of the multi-layer sheath, preparing a second composition blend for forming an outermost layer of the multi-layer sheath, combining the first and the second composition blends into a multi-layer pre-form, processing the multi-layer pre-form for producing tubing, and forming a tip at one end of the tubing using a thermal process, thereby producing the multi-layer sheath having the inner layer, the outermost layer, and the formed tip. The methods of the present invention include adding a detectable material to the blend used for making the inner layer for facilitating external visualization of the multi-layer sheath, thereby achieving a sheath with a formed tip having no visible discoloration. The methods also incorporate a reduced sintering process for achieving an optimally cured, peelable sheath having excellent tear properties.

US Patent:

20050136094, Jun 23, 2005

Filed:

Dec 15, 2004

Appl. No.:

11/012592

Inventors:

David Watson - San Jose CA, US
George Purtell - Westford MA, US
Brian Levy - Rochester NY, US
Dominic Ruscio - Webster NY, US
Jay Kunzler - Canandaigua NY, US
Michael Schmidt - Cambridge MA, US
Matthew Jonasse - Sodus NY, US
Joseph Salamone - Fairport NY, US

International Classification:

A61F002/00
A61K009/22

US Classification:

424427000, 604890100

Abstract:

A drug delivery device for placement in the eye includes a drug core comprising a pharmaceutically active agent, and a holder that holds the drug core. The holder is made of a material impermeable to passage of the active agent and includes an opening for passage of the pharmaceutically agent therethrough to eye tissue. The holder includes a tab, the tab being associated with a biocompatible surgical fabric.

US Patent:

20050136095, Jun 23, 2005

Filed:

Dec 15, 2004

Appl. No.:

11/012806

Inventors:

Brian Levy - Rochester NY, US
David Watson - San Jose CA, US
George Purtell - Westford MA, US
Dominic Ruscio - Webster NY, US
Jay Kunzler - Canandaigua NY, US
Michael Schmidt - Cambridge MA, US
Matthew Jonasse - Sodus NY, US
Joseph Salamone - Fairport NY, US

International Classification:

A61K009/22
A61F002/00

US Classification:

424427000, 604890100

Abstract:

A drug delivery device for placement in the eye includes a drug core comprising a pharmaceutically active agent, and a holder that holds the drug core. The holder is made of a material impermeable to passage of the active agent and includes an opening for passage of the pharmaceutically agent therethrough to eye tissue. The holder has a suture tab having a suture ring at an end thereof. The suture ring is used to secure the device at an implant site.

US Patent:

20050158365, Jul 21, 2005

Filed:

Dec 15, 2004

Appl. No.:

11/013230

Inventors:

David Watson - San Jose CA, US
George Purtell - Westford MA, US
Brian Levy - Rochester NY, US
Dominic Ruscio - Webster NY, US
Jay Kunzler - Canandaigua NY, US
Michael Schmidt - Cambridge MA, US
Matthew Jonasse - Sodus NY, US
Joseph Salamone - Fairport NY, US

International Classification:

A61K009/22
A61F002/00

US Classification:

424427000, 604890100

Abstract:

A drug delivery device for placement in the eye includes a drug core comprising a pharmaceutically active agent, and a holder that holds the drug core. The holder is made of a material impermeable to passage of the active agent and includes at least one opening for passage of the pharmaceutically agent therethrough to eye tissue. The holder is mechanically secured to a suture tab.

US Patent:

20130204125, Aug 8, 2013

Filed:

Feb 3, 2012

Appl. No.:

13/365445

Inventors:

Narissa Y. Chang - Somerville MA, US
George J. Purtell - Westford MA, US

Assignee:

NinePoint Medical, Inc. - Cambridge MA

International Classification:

A61M 25/10
A61B 6/00

US Classification:

600425, 604 9902, 604 9801

Abstract:

Systems, devices, methods and kits for an inflation system with pressure relief are provided. The system includes an inflatable member, a first shaft connected to the inflatable member, an imaging device extending into said cavity of the inflatable member, a second shaft configured to contain the imaging device, the second shaft having a closed end approximate to the imaging assembly and a open end approximate to the imaging system, the second shaft defining a cavity along a longitudinal axis thereof and configured to be positioned within the cavity of the first shaft; the first shaft and the second shaft defining a channel therebetween in communication with the cavity of the inflatable member; an inflator connected to the first shaft and in communication with the channel for inflating the inflatable member; and a relief valve in communication with the channel and positioned between the inflatable member and the inflator.

US Patent:

50356860, Jul 30, 1991

Filed:

Jan 27, 1989

Appl. No.:

7/303549

Inventors:

James F. Crittenden - Hollis NH
George J. Purtell - Dracut MA

Assignee:

C. R. Bard, Inc. - Murray Hill NJ

International Classification:

A61M 2900

US Classification:

604 96

Abstract:

A small diameter balloon dilatation catheter having a shaft formed from hypodermic tubing is provided with a detachable luer fitting on its proximal end. The luer fitting may be removed and an extension wire attached to the proximal end of the catheter. A larger diameter catheter then may be advanced over the smaller catheter utilizing the smaller catheter to guide the larger catheter to the stenosis being treated. In another aspect of the invention, a guiding sheath assembly is provided which permits catheter exchanges involving such small diameter catheters having integral guidewires. In one protocol such a catheter may be exchanged for a conventional balloon dilatation catheter with a movable guidewire by removing the dilatation catheter, advancing the sheath over the guidewire, then removing the guidewire and inserting the replacement catheter. Similarly, a catheter having an integral guidewire may be exchanged for a similar catheter by first removing the luer fitting at the proximal end of the catheter, then attaching a wire extension to the proximal end of the catheter, then advancing a sheath over the extension and catheter to locate the distal end of the sheath in proximity to the stenosis, then removing the catheter through the sheath and replacing that catheter with a new catheter inserted through the sheath.

US Patent:

51639033, Nov 17, 1992

Filed:

Jul 29, 1991

Appl. No.:

7/737321

Inventors:

James F. Crittenden - Hollis NH
George J. Purtell - Dracut MA

Assignee:

C. R. Bard, Inc. - Murray Hill NJ

International Classification:

A61M 2900

US Classification:

604 96

Abstract:

A small diameter balloon dilatation catheter having a shaft formed from hypodermic tubing is provided with a detachable luer fitting on its proximal end. The luer fitting may be removed and an extension wire attached to the proximal end of the catheter. A larger diameter catheter then may be advanced over the smaller catheter utilizing the smaller catheter to guide the larger catheter to the stenosis being treated. In another aspect of the invention, a guiding sheath assembly is provided which permits catheter exchanges involving such small diameter catheters having integral guidewires. In one protocol such a catheter may be exchanged for a conventional balloon dilatation catheter with a movable guidewire by removing the dilatation catheter, advancing the sheath over the guidewire, then removing the guidewire and inserting the replacement catheter. Similarly, a catheter having an integral guidewire may be exchanged for a similar catheter by first removing the luer fitting at the proximal end of the catheter, then attaching a wire extension to the proximal end of the catheter, then advancing a sheath over the extension and catheter to locate the distal end of the sheath in proximity to the stenosis, then removing the catheter through the sheath and replacing that catheter with a new catheter inserted through the sheath.