1
Lee P Bendel, William C McJames, Walter McGregor, Robert J Tannhauser: Shape memory effect surgical needles. Ethicon, Emil Richard Skula, June 15, 1993: US05219358 (301 worldwide citation)

Surgical needles are fabricated from a shape memory alloy. The alloy has a low temperature state, in which the needle is formable into an elongated shape to pass through an elongated tube, and a high temperature state, in which the needle forms an arc. The needle is particularly adapted for use in e ...


2
Walter McGregor: Controlled release suture. Johnson & Johnson, W R Eberhardt, September 14, 1976: US03980177 (126 worldwide citation)

A needle-suture combination is provided which has a suture pull-out value between 3 ounces and 26 ounces. The suture, one end of which is sized with a resin and smaller in diameter than the rest of the suture, is manufactured by placing the suture under tension, immersing a small section of the sutu ...


3
Walter McGregor, Richard C Troutman: Multiple curved surgical needle. Ethicon, June 25, 1985: US04524771 (92 worldwide citation)

An improved surgical needle. The needle comprises a plurality of curves which provide for improved control while suturing.


4
Walter McGregor, Lee Bendel: Sterile surgical needles with a hard sharp cutting edge and method for producing the same. Ethicon, Robert L Minier, April 28, 1987: US04660559 (38 worldwide citation)

A unitary sterile surgical needle having a hardened cutting edge and a malleable center portion and body section.


5
Walter McGregor, Thomas Maurer: Surgical needle configuration with spatula geometry. Ethicon, Paul A Coletti, March 26, 1991: US05002564 (25 worldwide citation)

A spatulated needle is provided wherein a six-sided cross-sectional portion results from a parallel or tapered pair of upper and lower surfaces connected by needle walls and a pair of fluted edges. At the tapered end of the needle, the upper surface alternates resulting in a five-sided cross-section ...


6
Walter McGregor: Surgical needle configuration with star shaped cross-section. Ethicon, Paul A Coletti, March 26, 1991: US05002565 (21 worldwide citation)

A needle having ten edges, forming a star-shaped cross-section. The needle also presents a tapered end. With reduced cross-sectional area, the improved needle results in easier tissue penetration, better wound opening area performance, and minimized tissue distortion. In an alternate embodiment, wou ...


7
Walter McGregor, Semyon Shchervinsky: Process for the manufacture of suture needles and needles produced thereby. Emil Richard Skula, July 22, 1997: US05649961 (21 worldwide citation)

A process for the manufacture of suture needles and, more particularly, a process for enhancing the physical strength of the suture needles through an expedient cold-working or cold-forming procedure. Also disclosed is the provision of a novel and physically strengthened suture needle, particularly ...


8
Walter McGregor, William Schaeffer, Semyon Shchervinsky: Surgical suture needle of the taper point type. Ethicon, Emil Richard Skula, November 4, 1997: US05683416 (19 worldwide citation)

A taper point surgical needle having improved needle point strength is disclosed. In one embodiment of the needle, a tip portion includes first and second integral tapered regions having first and second cross-sectional areas respectively which decrease progressively toward the tip of the needle in ...


9
Rao S Bezwada, Alastair W Hunter, Walter McGregor, Semyon Shchervinsky: Castor oil polymers. Ethicon, Hal Brent Woodrow, December 6, 1994: US05371176 (13 worldwide citation)

A polymer, particularly a biomedical polymer for the fabrication of medical and surgical devices and for use as a coating, is described. The polymer is derived from the reaction product of one or more lactone monomers and castor oil preferably: (a) .epsilon.-caprolactone, trimethylene carbonate or a ...


10
Walter McGregor, Semyon Shchervinsky: Process for the manufacture of suture needles and needles produced thereby. Ethicon, Emil Richard Skula, December 29, 1998: US05853423 (12 worldwide citation)

A process for the manufacture of suture needles and, more particularly, a process for enhancing the physical strength of the suture needles through an expedient cold-working or cold-forming procedure. Also disclosed is the provision of a novel and physically strengthened suture needle, particularly ...