John Charles Tiffany

US Patent:

47310812, Mar 15, 1988

Filed:

Sep 17, 1985

Appl. No.:

6/778158

Inventors:

John S. Tiffany - Ventura CA
R. Alastair Winn - Santa Barbara CA

Assignee:

Mentor Corporation - Goleta CA

International Classification:

A61F 212

US Classification:

623 8

Abstract:

A surgically implantable prosthesis, such as a mammary implant, that is rendered rupture-resistant by injecting a liquid with uniformly dispersed lubricating material into a flexible creasable shell during manufacture or surgical implantation. The lubricating material, such as polyvinylpyrrolidone, polyvinyl alcohol, hydroxyethyl starch, or lecithin is uniformly dispersed in a carrier inflating liquid such as normal saline. The lubricating material reduces frictional wear along opposed inner surfaces during sliding contact in a creased area in the shell wall after surgical implantation.

US Patent:

48728780, Oct 10, 1989

Filed:

May 26, 1987

Appl. No.:

7/053840

Inventors:

John S. Tiffany - Ventura CA

International Classification:

A61F 216

US Classification:

623 6

Abstract:

The ultraviolet screening of a silicone rubber intraocular lens can be enhanced by the addition of an optical brightener. The optical brightener also serves to reduce any apparent yellow tint that may occur. The optical brightener is incorporated into the preformed silicone lens by immersing it in a solution containing the optical brightener and an ultraviolet screening agent.

US Patent:

46106901, Sep 9, 1986

Filed:

Feb 22, 1983

Appl. No.:

6/468249

Inventors:

John S. Tiffany - Ventura CA

Assignee:

Mentor Corporation - Minneapolis MN

International Classification:

A61F 212

US Classification:

623 8

Abstract:

A surgically implantable prosthesis such as a mammary implant, that is rendered rupture-resistant by a lubricious layer bonded to the inner surface, outer surface, or both such surfaces of a wall of a flexible, creasable shell of the prosthesis. The lubricious layer reduces self-abrasion damage between sliding surfaces of the shell in a folding or creased area of the shell after surgical implantation. The lubricious layer can be mechanically bonded, such as through physical locking within an interpenetrating lattice structure of such wall, or can be attached to the shell's wall through a covalent chemical bond. An example of the rupture-resistant prosthesis includes a lubricious layer of an acrylamide polymer radiation bonded to at least one wall surface of a silicone shell or bag.

US Patent:

57418772, Apr 21, 1998

Filed:

Jun 6, 1997

Appl. No.:

8/870888

Inventors:

John S. Tiffany - Ventura CA

International Classification:

C08G 7706

US Classification:

528 15

Abstract:

A silicone gel-like material having a reduced content of extractable silicone fluid and having rheological properties approximating human tissue. The gel-like material or "pseudogel" is useful for filling an implantable prosthesis. Prior art silicone gel-filled prosthetic implants contain a high proportion of extractable free silicone fluid. The free silicone fluid within an implant may enter the host's body by diffusion through the prosthetic shell or by rupture of the outer envelope of the prosthesis. The present filler material, or pseudogel, is produced by controlling the cross-linking of the silicone polymer network such that every polymer chain contains only terminal reactive vinyl groups but not all of the reactive groups participate in the cross-linking reaction. In a preferred embodiment, the polymeric vinyl-terminated starting fluids are selected so that the average molecular weights of the polysiloxane polymers comprising the fluid fall into two or three distinct ranges. The cross-linker, which is composed of a siloxane molecule containing silicon hydride groups, is selected to have a relatively low molecular weight and a relatively high Si-H content.

US Patent:

48728772, Oct 10, 1989

Filed:

Mar 17, 1987

Appl. No.:

7/026631

Inventors:

John Tiffany - Ventura CA

International Classification:

A61F 216

US Classification:

623 6

Abstract:

An ultraviolet screening agent can be incorporated into a preformed silicone rubber intraocular lens by bringing it into contact with a solution which contains the agent in a higher concentration than the lens material.

US Patent:

40205576, May 3, 1977

Filed:

Sep 18, 1974

Appl. No.:

5/507223

Inventors:

Thomas J. Rockett - East Greenwich RI
John S. Tiffany - Camarillo CA
John J. O'Connell - Tustin CA

Assignee:

American Hospital Supply Corporation - Evanston IL

International Classification:

A61K 506
C08K 334

US Classification:

32 15

Abstract:

An improved composite material for use as a dental restorative in which the major component consists of a finely-divided reinforcing filler having a hardness no greater than about 5. 0 on the Moh's scale. Despite the relative softness of such a filler, in contrast to fillers conventionally used in dental composites, the final restoration has superior resistance to abrasion and wear, can be finished more effectively and more aesthetically, and can be handled with metal dental instruments.