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Pertti Tormala, Pentti Rokkanen, Seppo Vainionpaa, Juha Laiho, Veli Pekka Heponen, Timo Pohjonen: Surgical materials and devices. Pollock Vande Sande & Priddy, November 6, 1990: US04968317 (218 worldwide citation)

Surgical material of resorbable polymer, copolymer, or polymer mixture containing at least partially fibrillated structural units, and use thereof.


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Pertti Tormala, Pentti Rokkanen, Valle J Oikarinen, Seppo Vainionpaa, Pertti Helevirta: Bone graft implant. Biocon Oy, Pollock Vande Sande & Priddy, September 5, 1989: US04863472 (115 worldwide citation)

Supporting structure (1) for preventing the movements of powder material (2) which will be applied as bone graft (bone graft powder) which supporting structue (1) will be located to contact with bone tissue and which supporting structure (1) is manufactured of at least partially resorbable polymer, ...


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Pertti Tormala, Pentti Rokkanen, Juha Laiho, Markku Tamminmaki, Seppo Vainionpaa: Material for osteosynthesis devices. Materials Consultants Oy, Pollock Vande Sande & Priddy, May 10, 1988: US04743257 (100 worldwide citation)

Surgical osteosynthesis composite material, which is self-reinforced i.e. it is formed about the absorbable polymer or copolymer matrix which is reinforced with the absorbable reinforcement units which have the same chemical element percentage composition as the matrix has.


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Martti Talja, Pertti Tormala, Pentti Rokkanen, Seppo Vainionpaa, Timo Pohjonen: Method of manufacturing biodegradable surgical implants and devices. Biocon Oy, Kenyon & Kenyon, August 11, 1998: US05792400 (86 worldwide citation)

A method of producing a surgical implant, device, or part thereof, made of biodegradable material for performing at least one function selected from the group consisting of supporting, joining and separating tissue and keeping open a tissue cavity. One biodegradable rod which is wound around a windi ...


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Pertti Tormala, Pentti Rokkanen, Jyrki Kilpikari, Hannu Patiala, Seppo Vainionpaa, Kimmo Vihtonen, Matti Mero: Bone fracture surgical device. Materials Consultants Oy, Pollock Vande Sande & Priddy, April 7, 1987: US04655203 (35 worldwide citation)

Surgical device for immobilization of bone fracture, which device comprises at least one, essentially stiff osteosynthesis plate (7) which is located perpendicularly over or through the fracture (6). Additionally the osteosynthesis device comprises at least one firm fixing element (8, 8') which is f ...


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Juha Laiho, Pentti Rokkanen, Pertti Tormala, Seppo Vainionpaa, Timo Pohjonen, Veli Pekka Heponen: Surgical materials and devices. Materials Consultants Oy, Sf 33730 Tampere, Finland, YANG JIANXIA, September 14, 1988: CN88100127

The invention describes using at least part of the original fibrosis fixing materials of the fixing fracture, osteotomy, joint surgery or the joint injury and the equipment made of the materials, such as a bar, a plate, a bolt, an inner marrow nail and a U-shaped nail, the materials and equipment or ...


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Martti Talja, Pertti Tormala, Pentti Rokkanen, Seppo Vainionpaa, Timo Pohjonen: Biodegradable surgical implants and devices. Kenyon & Kenyon, January 16, 2003: US20030014127-A1

A surgical implant, device, or part thereof, made of biodegradable material for performing at least one function selected from the group consisting of supporting, joining and separating tissue and keeping open a tissue cavity. One biodegradable rod which is wound around a winding center into a helic ...