Peter M Larson

US Patent:

53785312, Jan 3, 1995

Filed:

Jul 9, 1993

Appl. No.:

8/089729

Inventors:

Peter M. Larson - Bexley OH
Lester M. Larson - Sun City West AZ

International Classification:

A61F 504
A61L 1512
A61L 1514
C08J 524

US Classification:

428255

Abstract:

Orthopedic splint materials made with thermoplastic polyester, particularly poly (epsilon-caprolactone) with a molecular weight of over 5,000 and melting between 50. degree. C. and 100. degree. C. have improved properties when subjected to gamma radiation in the range from 0. 5 to 30 megarads.

US Patent:

55408761, Jul 30, 1996

Filed:

Jun 5, 1995

Appl. No.:

8/462585

Inventors:

Peter M. Larson - Bexley OH
Lester M. Larson - Sun City West AZ

International Classification:

B06B 102

US Classification:

264479

Abstract:

Materials and items made of thermoplastic polyesters, such as poly (epsilon-caprolactone), synthetic rubber, such as Transpolyisoprene and Neoprene, and natural rubber, such as balata have improved properties when subjected to gamma radiation in the range from 0. 5 to 30 megarads.

US Patent:

20160067078, Mar 10, 2016

Filed:

Nov 12, 2015

Appl. No.:

14/938983

Inventors:

Peter M. Larson - Granville OH, US

International Classification:

A61F 5/058

Abstract:

A composite moldable splint and method for using the same is described. In some embodiments, the splint has at least a partially fluid-filled inner volume, which in some embodiments may include foam, rubber, water, or pelletized material, surrounded by a thermoplastic layer that is flexible and moldable when heated. The inner volume, which may include a thermoactive adhesive having differing viscosity characteristics at a plurality of temperatures, provides the ability to mold the cushion into a wide range of shapes and contours, such as when forming around a body part. The thermoplastic layer provides the ability of the cushion to be molded when heated, while the inner volume tends to maintain a shape, and allows the thermoplastic layer to stay in its formed shape as the cushion cools. The cushion may be used in a range of medical applications for stabilizing patients and body parts.

US Patent:

20150059765, Mar 5, 2015

Filed:

Mar 3, 2014

Appl. No.:

14/194940

Inventors:

Peter M. Larson - Granville OH, US

International Classification:

A61F 5/37

US Classification:

128845

Abstract:

An immobilization system for a body, or body part, is provided, having a fixed form support and one or more shells that generally form an outlining structure of the body part to be immobilized. A formable support, having minimal mass, is molded and interposed between the fixed form support and shells to form a closely fitted support for the body part. The shell or shells may be removed from the system after molding, so that patient comfort is improved and total mass of the system is reduced, without compromise of the degree of immobilization. A retention mask, which also may be molded to conform to the body or body part, may be utilized to further stabilize positioning of the system.

US Patent:

20150065932, Mar 5, 2015

Filed:

Aug 27, 2013

Appl. No.:

14/010816

Inventors:

Peter M. Larson - Granville OH, US

International Classification:

A61F 5/058

US Classification:

602 12

Abstract:

A composite moldable splint and method for using the same is described. In some embodiments, the splint has at least a partially fluid-filled inner volume, which in some embodiments may include foam, rubber, water, or pelletized material, surrounded by a thermoplastic layer that is flexible and moldable when heated. The thermoplastic layer may then be covered by a fabric or foam layer to provide comfort and to maintain overall dimensional stability when heated. The inner volume provides the ability to mold the cushion into a wide range of shapes and contours, such as when forming around a body part. The thermoplastic layer provides the ability of the cushion to be molded when heated, and to assume a rigid formed shape when the cushion cools. The cushion may be used in a range of medical applications for stabilizing patients and body parts.