PAUL WALINSKY
Medical Practice in Ardsley, PA

5486192, Jan 23, 1996

Jun 3, 1994

8/253720

Paul Walinsky - Wyndmoor PA
William H. Meise - Penns Park PA

A61M 2900

606194

A conventional balloon catheter is used in conjunction with an inflation control system which senses the heartbeat electrically or by way of arterial pressure, and which controls the balloon inflation condition in synchronism therewith, thereby deflating the balloon during periods, such as diastole (heart muscle relaxation), to allow blood to flow past the deflated balloon, and inflating the balloon during systolic (heart muscle contraction) periods, so that the plaque may be compressed, or the walls of the artery or other vas may be expanded by the inflated balloon. Since blood can pass the location of the balloon during each heartbeat, nutrient blood flow continues during the angioplasty procedure, so the procedure may be continued for a longer time than during conventional treatment. Since the blood flow is "time-division multiplexed" using a conventional angioplasty catheter, the catheter may be smaller andor more flexible than a conventional perfusion catheter, allowing its use in smaller arteries, and at lower catheter cost. The heart sensor may include a plurality of electrodes such as are ordinarily used for electrocardiograms (EKGs) or an arterial pressure sensor, connected to a control circuit which responds to a distinctive portion of the electrical signal therefrom.

5575771, Nov 19, 1996

Apr 24, 1995

8/427748

Paul Walinsky - Wyndmoor PA

A61M 2900

604 96

A catheter (10) for use with a guidewire (40) includes an elongated, flexible body (12a) defining distal and proximal ends, and also defining a balloon inflation lumen (14) extending therethrough. A balloon (24) is affixed near the distal end, at a location selected so that an extending portion (12b) of the catheter extends distally beyond the balloon. A guidewire retaining arrangement (30) is located on an exterior part of the extending portion (12b) of the catheter, for allowing the catheter to slide relative to the guidewire, while being maintained adjacent thereto. In a particular embodiment of the invention, the balloon (24) has a perfusion channel (22) extending from a distal side (16) of the balloon to the proximal side. The perfusion channel may have walls which have different compliance than the remainder of the balloon. In an embodiment with a lobed balloon (724), the guidewire retaining arrangements are located so as to direct the guidewire between the lobes of the balloon.

5423797, Jun 13, 1995

Apr 25, 1994

8/232687

Sorin Adrian - Penn Valley PA
Peter A. Lewin - Wyndmoor PA
Sorin Siegler - Merion PA
Paul Walinsky - Wyndmoor PA
Richard C. Hayes - Penn Valley PA

Medelex, Inc. - Penn Valley PA

A61B 1700

606 1

An acoustic catheter reduces transmission losses and unwanted heating of the transmission member by driving the catheter a rotary motor. The catheter includes an elongated body and a shaft extending longitudinally therethrough. The shaft is adapted for coupling to a rotary motor. A rotary-to-axial motion converter is coupled to the shaft at distal end of the catheter, for converting rotary shaft motion into axial acoustic motion. In one embodiment, the rotary-to-axial motion converter includes a swash plate driven by the shaft. The swash plate defines a surface which, at an angularly fixed reference point, moves axially in response to the rotary motion of the swash plate. A follower bears on the swash plate, for moving axially in response to axial motion of the follower. The follower includes a projection bearing on the swash plate and a spring urging the follower toward the swash plate. In one embodiment, the swash plate has a sinusoidal surface, while another embodiment has notches cut into the surface.

5720718, Feb 24, 1998

Jan 6, 1994

8/178176

Arye Rosen - Cherry Hill NJ
Stuart D. Edwards - Los Altos CA
Ronald G. Lax - Grassvalley CA
Hugh R. Sharkey - Redwood City CA
Ingemar H. Lundquist - Pebble Beach CA
Paul Walinsky - Wyndmoor PA

Vidamed, Inc. - Menlo Park CA

A61B 1739

604 22

A medical probe device comprising a catheter having a stylet guide housing with at least one stylet port in a side thereof and stylet guide means for directing a flexible stylet outward through at least one stylet port and through intervening tissue to targeted tissue. The stylet comprises an electrical central conductor which is enclosed within an insulating or dielectric sleeve surrounded by a conductive layer terminated by an antenna to selectively deliver microwave or radio frequency energy to target tissue. One embodiment includes the electrical conductor being enclosed within a non-conductive sleeve which itself is enclosed within a conductive sleeve in a coaxial cable arrangement to form a microwave transmission line terminated by an antenna. Another embodiment includes a resistive element near the distal end of the stylet which couples the center electrode to an outer conductor to generate joulian heat as electromagnetic energy is applied, such as an RF signal.

5599295, Feb 4, 1997

Nov 8, 1995

8/555519

Arye Rosen - Cherry Hill NJ
Stuart D. Edwards - Los Altos CA
Ronald G. Lax - Grassvalley CA
Hugh R. Sharkey - Redwood City CA
Ingemar H. Lundquist - Pebble Beach CA
Paul Walinsky - Wyndmoor PA

Vidamed, Inc. - Menlo Park CA

A61B 1739

604 22

A medical probe device comprising a catheter having a stylet guide housing with at least one stylet port in a side thereof and stylet guide means for directing a flexible stylet outward through at least one stylet port and through intervening tissue to targeted tissue. The stylet comprises an electrical central conductor which is enclosed within an insulating or dielectric sleeve surrounded by a conductive layer terminated by an antenna to selectively deliver microwave or radio frequency energy to target tissue. One embodiment includes the electrical conductor being enclosed within a non-conductive sleeve which itself is enclosed within a conductive sleeve in a coaxial cable arrangement to form a microwave transmission line terminated by an antenna. Another embodiment includes a resistive element near the distal end of the stylet which couples the center electrode to an outer conductor to generate joulian heat as electromagnetic energy is applied, such as an RF signal.

5716389, Feb 10, 1998

Nov 13, 1995

8/559816

Paul Walinsky - Wyndmoor PA
Arnold Jack Greenspon - Elkins Park PA
Arye Rosen - Cherry Hill NJ

A61N 105, A61B 504

607122

The catheter sensing and ablation arrangement allows location and cardiac abalation on a patient. The arrangement includes an electrically nonconductive catheter body, with a guide-wire lumen. The guidewire is electrically conductive, and, when the guidewire is assembled with the catheter, extends through the lumen, and is slideable therein. The guidewire has an enlarged distal end which, when retracted, blocks the guidewire lumen. The distal end of the catheter body has an exposed first electrode, which is connected to a terminal located near the proximal end. An action potential sensor is adapted for, in a sensing mode of operation, coupling to the proximal end of the guide wire and to the electrical terminal, for sensing action potentials appearing between the enlarged end of the guide wire and the first electrode, so the end of the guide wire may be moved to a cardiac location identifiable by the action potentials. An electrically conductive contact plate is adapted for, in a second mode of operation of the sensing and ablation arrangement, being located on the exterior of the patient's back. An RF signal generator is provided for, in an ablation mode of operation, causing RF energy to be guided to the selected cardiac location, for causing current flow between the contact plate and the enlarged distal end of the guidewire, resulting in ablation of cardiac material at the cardiac location, but not at the contact plate.

5470314, Nov 28, 1995

Jul 22, 1994

8/279061

Paul Walinsky - Wyndmoor PA

A61M 2900

604 96

A perfusion balloon catheter (10), as for angioplasty by dilatation, has the balloon (30) formed so that, when inflated within a vas or coronary artery, one or more channels (40) are provided for the flow of bodily fluids or blood past the inflated balloon. In one embodiment, the balloon has a toroidal shape which defines a central open channel. In order to avoid closure of the central channel when the balloon inflation pressure is increased to distend the vas within which it is placed, a portion (44) of the balloon is made from a relatively elastic membrane, and the portion of the balloon (244) adjacent the channel (40) is made from a relatively less elastic material, or a rigid material, whereby additional pressure does not cause channel closure.

5925055, Jul 20, 1999

Sep 18, 1997

8/933499

Sorin Adrian - Penn Valley PA
Paul Walinsky - Wyndmoor PA

Medelex, Inc - Penn Valley PA

A61B 1722

606159

An ablation and cutting catheter (10), which may be used for angioplasty, includes a rotary shaft (20) adapted to be driven by a rotary motor (22). The shaft (20) is free for rotation and for some axial motion. The shaft (20) is coupled to a rotational-to-axial motion converter (FIGS. 2a, 2b, 2c; 3a, 3b, 3c) which is affixed to the shaft. The converter moves axially in response to rotation of the shaft, and also rotates. The axial motion is converted into acoustic energy for ablation, and the rotation can be used with a cutting tool for cutting. A guide-wire lumen exteds through the shaft and the cutter/acoustic applicator head, for accepting a guide-wire for guiding the catheter.

2007019, Aug 16, 2007

Feb 13, 2007

11/674426

Arye Rosen - Cherry Hill NJ, US
Paul Walinsky - Wyndmoor PA, US

DREXEL UNIVERSITY - Philadelphia PA

A61B 5/02

600485, 607122

A catheter based implantable wireless pressure sensor and associated electronic circuitry for transmission of hemodynamic status of a subject.