Patent EP0491983B1 successfully refreshed from Google Patents.
EP0491983B1
Expired / Lapsed
EP
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Biodegradable and resorbable molded article for surgical use
Assignee: Takiron Co Ltd
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Filing: 1990-12-24
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Granted: 1996-03-20
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Expires: 2010-12-24
Abstract
No abstract record available.
Inventors
- 👤 Yasuo c/o Takiron Co. Ltd. Shikinami
- 👤 Kaoru c/o Takiron Co. Ltd. Tsuta
- 👤 Hidekuzu c/o Takiron Co. Ltd. Boutani
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 15:36
CPC Classifications
A; A61; A61L; A61L31/00; A61L31/14; A61L31/148; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/80; A61B17/84; A61B17/86; A61B17/866; A61L31/04; A61L31/06; A61B17/686; A61B2017/00004
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
126 words
A biodegradable and resorbable molded article for surgery which comprises a polylactic acid molded and stretched article having a viscosity average molecular weight of from 200,000 to 500,000, a bending strength in compression of from 16.0 x 10² to 25.0 x 10² kg/cm², a bending modulus in compression of from 5.5 x 10² to 24.0 x 10² kg/mm², and a degree of crystallinity of from 10 to 60% as calculated from density, the thickest portion of said molded and stretched article being controlled between 1.0 mm and 4.5 mm so that said article is deteriorated in strength due to degradation in a living body within about 4 to 16 weeks and resorbed into a living body at least 50% during from about 1.5 to 2.0 years.
Claim 2
Dependent Claim
17 words
Molded article as claimed in Claim 1, characterized in that said article is a screw-shaped molded article.
Claim 3
Dependent Claim
20 words
Molded article according to claim 2, characterized in that said article has a diameter of from 2.5 to 3.5 mm.
Claim 4
Dependent Claim
117 words
Use of a molded article according to claim 3 for preparing a shoulder joint for fixation of the greater tubeorsity, osteoclastic fragments of the collum chirurgium, and fragments of the glenoid; or for preparing a pelvis and/or hip-joint for osteosynthesis of a fracture of the acetabulum and an avulsion fracture of the ilium for fixation of a graft in hip-joint arthroplasty, and for osteosynthesis of a fracture of the femoral head; or for preparing a means for osteosynthesis of an intraarticular fracture, an osteochondritis dissecans, a fracture of the proximal tibia or for osteosynthesis in osteotomy; or for preparing a means for osteosynthesis of a fracture in the medial, lateral or posterior malleolus of an ankle joint.
Claim 5
Dependent Claim
20 words
Molded article according to claim 2, characterized in that said article has a diameter of from 2.0 to 3.0 mm.
Claim 6
Dependent Claim
30 words
Use of a molded article according to claim 5 for preparing an elbow joint for osteosynthesis of a fracture of the medial epicondyle of humerus or lateral epicondyle of humerus.
Claim 7
Dependent Claim
20 words
Molded article according to claim 2, characterized in that said article has a diameter of from 3.5 to 4.5 mm.
Claim 8
Dependent Claim
60 words
Use of a molded article according to claim 7 for preparing a knee joint for osteosynthesis of a fracture of the femoral condyle; or for preparing a means for osteosynthesis of a fracture of the talus in an ankle joint; or for preparing a means for use in a shaft of a long bone for fixation of a bone graft.
Claim 9
Dependent Claim
20 words
Molded article according to claim 2, characterized in that said article has a diameter of from 2.0 to 3.5 mm.
Claim 10
Dependent Claim
31 words
Use of a molded article according to claim 9 for preparing a means for use in a cervical spine for anterior decompression and fusion, and for fixation of a bone graft.
Claim 11
Dependent Claim
17 words
Molded article as claimed in claim 1, characterized in that said article is a pin-shaped molded article.
Claim 12
Dependent Claim
21 words
Molded article as claimed in claim 11, characterized in that said article has a diameter of from 1.0 to 2.0 mm.
Claim 13
Dependent Claim
40 words
Use of a molded article according to claim 12 for preparing a means for use in carpal bones and metacarpals for osteosynthesis of a fracture of phalanx of finger in various sites, and intraarticular fracture, a fracture of distal radius.
Claim 14
Dependent Claim
20 words
Molded article according to claim 11, characterized in that said article has a diameter of from 1.0 to 2.5 mm.
Claim 15
Dependent Claim
27 words
Use of a molded article according to claim 14 for proparing an elbow joint for osteochondral fracture and fixation of a bone graft for curing baseball elbow.
Claim 16
Dependent Claim
20 words
Molded article according to claim 11, characterized in that said article has a diameter of from 2.5 to 3.5 mm.
Claim 17
Dependent Claim
74 words
Use of a molded article according to claim 16 for preparing a pelvis and/or hip-joint for osteosynthesis of a fracture of the acetabulum and an avulsion fracture of the ilium, for fixation of a graft in hip-joint arthroplasty, and for osteosynthesis of a fracture of the femoral head; or for preparing a knee joint for osteosynthesis of an intraarticular fracture, an osteochondritis dissecans, a fracture of the proximal tibia or for osteosynthesis in osteotomy.
Claim 18
Dependent Claim
20 words
Molded article according to claim 11, characterized in that said article has a diameter of from 2.0 to 4.0 mm.
Claim 19
Dependent Claim
28 words
Use of a molded article according to claim 18 for preparing a means used in an ankle joint for osteosynthesis of an osteochondritis dissecans and an osteochondral fracture.
Claim 20
Dependent Claim
20 words
Molded article according to claim 11, characterized in that said article has a diameter of from 3.5 to 4.5 mm.
Claim 21
Dependent Claim
23 words
Use of a molded article according to claim 20 for preparing a knee joint for osteosynthesis of a fracture of the femoral condyle.
Claim 22
Dependent Claim
20 words
Molded article according to claim 11, characterized in that said article has a diameter of from 1.5 to 2.5 mm.
Claim 23
Dependent Claim
34 words
Use of a molded article according to claim 22 for preparing a means for use in toes in an operation of a hallux valgus or osteosynthesis of a fracture of a phalanx of toe.
Claim 24
Dependent Claim
16 words
Molded article according to claim 1, characterized in that said article is a microscrew-shaped molded article.
Claim 25
Dependent Claim
20 words
Molded article according to claim 24, characterized in that said article has a diameter of from 1.5 to 2.5 mm.
Claim 26
Dependent Claim
39 words
Use of a molded article according to claim 25 for preparing a means used in a wrist joint and a phalax of finger for osteosynthesis of a fracture of a distal radius and a fracture of phalax of finger.
Claim 27
Dependent Claim
19 words
Molded article according to claim 1, characterized in that said article is a curved or straight rod-shaped molded article.
Claim 28
Dependent Claim
20 words
Molded article according to claim 27, characterized in that said article has a diameter of from 2.0 to 4.0 mm.
Claim 29
Dependent Claim
25 words
Use of a molded article according to claim 28 for preparing a means for osteosynthesis of a fracture of a the clavicula or the rib.
Claim 30
Dependent Claim
51 words
Molded article according to claim 1, characterized in that said article is a combination of a plate-shaped molded article pierced by holes having a thickness of from 1.0 to 2.0 mm and a screw-shaped molded article having a diameter of from 2.0 to 2.5 mm for fixing said plate-shaped molded article.
Claim 31
Dependent Claim
35 words
Use of a molded article according to claim 30 for preparing a means used in oral surgery for osteosynthesis of fractures in the skull, the cheek bone, the nasal bone, the maxilla, and the mandibular.
References Cited (Backward Citations)
No citation records indexed.
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