John R Fagan

US Patent:

7083633, Aug 1, 2006

Filed:

Sep 3, 2003

Appl. No.:

10/653812

Inventors:

Richard J Morrill - Billerica MA, US
John R. Fagan - Pepperell MA, US
David O. Williams - Barrington RI, US

Assignee:

Advanced Vascular Technologies LLC - Barrington RI

International Classification:

A61M 29/00

US Classification:

606200

Abstract:

An improved arterial catheter device for capturing emboli within the aorta and other arteries is described. The system typically includes an elongated catheter member bearing a filtration apparatus disposed at its the distal region, comprising a filter membrane and a mechanism for deploying and collapsing the filter. For reliable deployment, the deployment mechanism comprises at least one pair of struts, one being a compression strut and the other a tension strut. In use, the catheter is positioned so that the filter membrane is down stream from the possible embolic source and upstream from any vital organs of concern. When deployed the filter membrane will capture emboli from the blood stream, and upon filter removal will extract the emboli from the patient.

US Patent:

61969958, Mar 6, 2001

Filed:

Sep 30, 1998

Appl. No.:

9/164009

Inventors:

John R. Fagan - Pepperell MA

Assignee:

Medtronic AVE, Inc. - Santa Rosa CA

International Classification:

A61M 2900

US Classification:

604 9601

Abstract:

The invention relates to a catheter and guidewire exchange system in which the guidewire is contained within an indwelling portion of the catheter and with the guidewire and the catheter being separated externally of the patient. The catheter includes a guidewire lumen and a longitudinal slit which penetrates through the catheter wall and into the guidewire lumen. The catheter walls adjacent the slit are provided with reinforced edges which function to maintain the slit in a normally closed position during the catheterization procedure, when desired.

US Patent:

58580077, Jan 12, 1999

Filed:

Jul 3, 1996

Appl. No.:

8/675220

Inventors:

John R. Fagan - Pepperell MA
John Zhang - Arlington MA

Assignee:

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

International Classification:

A61M 500

US Classification:

604256

Abstract:

A self-sealing hemostatic valve for use in a catheter apparatus is disclosed, comprising a proximal valve element having a sealing hole, a distal valve element having a flap and biasing means to enhance the force with which the flap bears against the distal side of the proximal valve element to normally seal the hole. The sealing hole seals about an instrument passed through the valve and the flap seals the valve when no instrument is present. The proximal face of the proximal valve element is provided with discontinuities that increase the flexibility of the proximal valve element in a distal direction.

US Patent:

57158177, Feb 10, 1998

Filed:

Jun 7, 1995

Appl. No.:

8/478206

Inventors:

John R. Fagan - Pepperell MA
Dino F. Cuscuna - Reading MA
Sarkis Karakozian - Belmont MA

Assignee:

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

International Classification:

A61B 5042
A61N 105

US Classification:

128642

Abstract:

A bidirectional steering catheter comprising a distal electrode assembly, a flexible tip assembly, an elongated shaft having a central lumen running the length of the shaft, and a handle/actuator. A plurality of ring electrodes are attached to the surface of the flexible tip assembly. Signal wires running the length of the catheter are electrically connected to each ring electrode. At least two pull cables having first and second ends extend distally through the central lumen. The first end of each pull cable is attached to the handle/actuator. The second end of each pull cable is attached to the distal electrode assembly, such that the distal electrode assembly may be moved between a first and a second position within a single plane by manipulating the handle/actuator. At least two reinforcement members are located inside the flexible tip assembly. Each reinforcement member has a proximal section, a middle section and a distal section.

US Patent:

39686884, Jul 13, 1976

Filed:

Jun 24, 1974

Appl. No.:

5/482505

Inventors:

John L. Eaton - Delanco NJ
John C. Fagan - Philadelphia PA

Assignee:

SCM Corporation - New York NY

International Classification:

G01F 2302

US Classification:

73328

Abstract:

A liquid level gauge having at least one transparent wall and a base wall on the exterior of a vessel. The gauge is secured to and communicates with the interior of the vessel by an eyelet connecting adjacent ports in the gauge and the vessel.

US Patent:

57203008, Feb 24, 1998

Filed:

Feb 21, 1995

Appl. No.:

8/391010

Inventors:

John R. Fagan - Pepperell MA
Lex P. Jansen - Londonderry NH
L. Ven Raman - Framingham MA
John A. Wright - Arlington MA

Assignee:

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

International Classification:

A61B 500

US Classification:

128772

Abstract:

An elongate flexible wire-like medical device, such as a guidewire for use with a catheter, is formed with a shaft in which the difference between the magnitude of the tensile yield stress and compressive yield stress of the shaft is substantially reduced. The guidewire exhibits superior kink resistance without compromising other desirable characteristics and enables a guidewire to be made in a smaller diameter without loss of performance. The guidewire shaft may be formed from a precipitation hardenable alloy such as an alloy of nickel, cobalt, molybdenum and chromium (MP35N and Elgiloy), 455PH stainless steel or stainless steel alloy 1RK91. Also disclosed is a process for increasing the modulus of elasticity of an alloy of nickel, cobalt molybdenum and chromium. Further, the disclosure relates to an improved management and manufacturing process for constructing the tip of a medical guidewire.

US Patent:

61101443, Aug 29, 2000

Filed:

Jul 26, 1999

Appl. No.:

9/359805

Inventors:

Richard T. Choh - Waltham MA
John R. Fagan - Pepperell MA
Stephen J. Forcucci - Arlington MA

Assignee:

Medtronic AVE, Inc. - Santa Rosa CA

International Classification:

A61M 2900

US Classification:

604 9901

Abstract:

The invention relates to an apparatus and method for limiting the pressure of inflation fluid injected into a drug delivery catheter balloon, while permitting continuous and uninterrupted flow of such fluid to the balloon. The apparatus includes an elongated hollow housing having a fluid entrance, a fluid exit and a bore extending therebetween which forms an interconnecting chamber and passageway. A piston and piston shaft assembly is disposed inside the housing and is longitudinally movable within the chamber. The piston and piston shaft assembly is biased against the fluid pressure of the fluid entering the housing by a spring. The piston shaft has a distal end which extends toward the passageway inlet. As the incoming fluid pressure increases and approaches the predetermined maximum pressure level of the apparatus, the piston shaft distal end moves within the chamber against the biasing force of the spring toward a position adjacent the passageway inlet. When the incoming fluid pressure reaches and exceeds the predetermined maximum pressure level, the piston shaft distal end enters and extends into the passageway, thereby forming an annulus within the passageway.

US Patent:

39415180, Mar 2, 1976

Filed:

Feb 18, 1975

Appl. No.:

5/550705

Inventors:

John L. Eaton - Delanco NJ
John C. Fagan - Philadelphia PA
Roger V. Eeckhout - Warminster PA

Assignee:

SCM Corporation - New York NY

International Classification:

F04B 2100

US Classification:

417442

Abstract:

An electric steam-spray iron having a pump and a bi-stable valve in a single housing for drawing water from a reservoir and delivering it to either a spray nozzle or a steam generating chamber which communicates with steam ports in the sole plate. The valve's stable state is changed by rocking movement of the pump's piston.