TIMOTHY A SARDELIS
Engineers in East Millstone, NJ

5814166, Sep 29, 1998

Nov 14, 1996

8/748875

Douglas Warren Ackerman - Gainesville GA
Timothy Sardelis - Somerset NJ
William McJames - Belle Mead NJ

Ethicon, Inc. - Somerville NJ

C21D 926

148606

A continuous process for heat treating and cleaning and tempering martensitic stainless steel surgical needles is disclosed. The method comprises exposing the surgical needles to a partial vacuum at a temperature less than the heat treating temperature to remove volatile surface contaminant. Then the needles are heat treated in an argon gas environment at a pressure equal to or greater than 1. 0 Torr. Next the temperature of the oven is lowered to temper the needles.

5000912, Mar 19, 1991

Dec 15, 1989

7/451078

Lee P. Bendel - Lebanon NJ
Timothy A. Sardelis - Somerset NJ

Ethicon, Inc. - Somerville NJ

C22C 3844, C22C 3920, C21D 702

420 34

A needle alloy wherein the nickel content is between 6. 3% and 9. 5%, the chromium content is between 11. 5% and 12. 5% and the molydenum content is between 3% and 4%. In addition, tantalum and titanium should be present at a combined level of no more than 2. 1%. Favorable results from this alloy cause needles to have a greater than 400,000 psi ultimate tensile strength.

5730732, Mar 24, 1998

Dec 4, 1996

8/759491

Timothy Sardelis - Somerset NJ
William McJames - Belle Mead NJ

Ethicon, Inc. - Somerville NJ

A61M 532

604272

A non-magnetic surgical needle. The needle is made from Type 316 stainless steel or ERSTE 4456CA stainless steel and is work hardened to have mechanical properties substantially equivalent to a surgical needle made from conventional magnetic stainless steel. The needle is useful in the magnetic field of a magnetic resonance imaging diagnostic apparatus.

5651843, Jul 29, 1997

May 29, 1996

8/654812

Lee P. Bendel - Lebanon NJ
Timothy Sardelis - Somerset NJ
Lawrence P. Trozzo - South Somerville NJ
Leon K. Stungurys - Middlesex NJ
Hugo R. Florez - Bridgewater NJ
Jeffrey T. Lavin - Milford NJ
Matthew J. McGrane - Three Bridges NJ
Jeffrey K. McVey - Lambertville NJ

Ethicon, Inc. - Somerville NJ

C22C 3844

148327

A new and useful predictor for maraging stainless steel alloys is created, called the martensite finish temperature, M. sub. f (. degree. F. ). This formula enables one to predict the temperature at which a steel is entirely converted to martensite, and is described as M. sub. f =1027--78% Ni--27% Ti--34% Mo. A desirable needle alloy for this amount is nickel at 10%, molybdenum at about 2. 7%, and titanium at about 2%.

5269806, Dec 14, 1993

Oct 9, 1992

7/959198

Timothy A. Sardelis - Somerset NJ
Paul J. Parisi - Mahwah NJ
Lester E. Schaible - Somerville NJ
Lawrence P. Trozzo - Hillsborough NJ
Matthew L. Wolczynski - High Bridge NJ

Ethicon, Inc. - Somerville NJ

A61B 1700

606222

A surgical needle having an I-beam configuration is disclosed. The surgical needle comprises an elongated member having an I-beam cross section wherein two opposed flange members are connected by a web member. The elongated member has a piercing point extending from its distal end. A cylindrical mounting section extends from the proximal end of the needle for receiving an end of a suture. The needle has increased resistance to bending and buckling when compared to conventional needles and does not have an increase in resistance or drag.

5783001, Jul 21, 1998

Nov 14, 1996

8/748845

Timothy Sardelis - Somerset NJ
Douglas Warren Ackerman - Gainesville GA
William McJames - Belle Mead NJ

Ethicon, Inc. - Somerville NJ

A61B 1700, C21D 602, C21D 976

148607

A method of heat treating and cleaning maraging or precipitation hardening stainless steel surgical needles is disclosed. The method comprises exposing the surgical needles to a partial vacuum at a temperature less than the aging temperature to remove volatile surface contaminants. Then the needles are heat treated in an argon gas environment at a pressure equal to or greater than 1. 0 atmosphere.

4449530, May 22, 1984

Jul 15, 1981

6/283692

Lee P. Bendel - Lebanon NJ
Timothy Sardelis - Somerset NJ

Ethicon, Inc. - Somerville NJ

A61B 1712, A61B 1700

128325

Metallic, hemostatic clips providing a reduced gap when closed about a tubular vessel.

5350419, Sep 27, 1994

Sep 18, 1992

7/947207

Lee P. Bendel - Lebanon NJ
Timothy A. Sardelis - Somerset NJ
Leon K. Stungurys - Middlesex NJ
Thomas A. Astarita - Flemington NJ

Ethicon, Inc. - Somerville NJ

A61N 105

607132

A novel cardiac pacing lead. The pacing lead has a conductive wire comprising a single filament of a low modulus metal. A surgical needle is mounted to a distal end of the wire and an electrode needle is mounted to the proximal end of the wire. An integral anchor is formed in a distal, uninsulated section of the wire for anchoring the pacing lead in heart muscle. The wire has a "hand" similar to multifilament wires.