EP0326426A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Plastic molded articles with shape memory property
Assignee: JMS Co Ltd
•
Filing: 1989-01-27
•
Granted: —
•
Expires: 2009-01-27
Abstract
Abstract Plastic molded articles having characteristic properties of both shape-memory and biodegradability and a process for preparing the same are disclosed. The molded products consist of homopolymers of lactide or glycolide or copolymers of lactide and glycolide. The molded articles of this invention are particularly useful for a variety of medical devices.
Inventors
- 👤 Tatsuya Kawai
- 👤 Takashi Matsuda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-22 19:25
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/92; A61B; A61B17/00; A61B17/02; A61B17/064; A61B17/0644; A61B17/08; A61B17/12; A61B17/122; A61B17/1227; A61F2/94; A61L; A61L31/00; A61L31/04; A61L31/06; A61L31/14; A61M; A61M31/00; A61M31/002; B; B29; B29C; B29C61/00; B29C61/003; C; C08; C08L; C08L67/00; C08L67/04; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30062; A61F2002/30092; A61F2210/00; A61F2210/0004; A61F2210/0014; A61F2210/0019; A61L2400/00; A61L2400/16; Y; Y10; Y10S; Y10S264/00; Y10S264/40; Y10S264/41
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
35 words
A molded article which is returnable to a previously memorized shape, comprising one or more polymers selected from lactide homopolymers, glycolide homopolymers and copolymers of lactide and glycolide, said polymers having a shape memory property.
Claim 2
Dependent Claim
35 words
A molded article which is returnable to a previously memorized shape, comprising one or more polymers selected from lactide homopolymers, glycolide homopolymers and copolymers of lactide and glycolide, said polymers having a shape memory property.
Claim 3
Dependent Claim
26 words
A molded article according to claim 1, wherein said polymers are copolymers containing 10 - 90 mol % lactide and 90 - 10 mol % glycolide.
Claim 4
Dependent Claim
26 words
A molded article according to claim 1 wherein said polymers are copolymers containing 20 - 80 mol % lactide and 80 - 20 mole % glycolide.
Claim 5
Dependent Claim
22 words
A molded article according to any one of claims 1, 2 or 3 wherein the article is a clip for tissue suturing.
Claim 6
Dependent Claim
24 words
A molded article according to any one of claims 1, 2 or 3, wherein the article is a device for preventing blood vessel obstruction.
Claim 7
Dependent Claim
25 words
A molded article according to any one of claims 1, 2 or 3 wherein the article is a device for expanding a restricted blood vessel.
Claim 8
Dependent Claim
27 words
A molded article according to any one of claims 1, 2 or 3 wherein the article is an actuator for releasing a drug from a medical capsule.
Claim 9
Dependent Claim
23 words
A molded article according to any one of claims 1, 2 or 3 wherein the article is a clip for a cerebral aneurysm.
Claim 10
Dependent Claim
28 words
A molded article according to any one of claims 1, 2 or 3, wherein the article comprises rings for attachment to the ends of an artificial blood vessel.
Claim 11
Dependent Claim
20 words
A molded article according to any one of claims 1, 2 or 3, wherein the article is a hemostatic clip.
Claim 12
Dependent Claim
57 words
A process for preparing a molded article according to claim 1, comprising the steps of: molding a polymer selected from lactide homopolymers, glycolide homopolymers and copolymers of lactide and glycolide into an article of a desired shape; deforming the molded article into another shape by heat-softening; and cooling the deformed article to cause the article to harden.
Claim 13
Dependent Claim
81 words
A process for preparing a molded article according to claim 1, comprising the steps of: molding a polymer selected from lactide homopolymers, glycolide homopolymers and copolymers of lactide and glycolide into an article of a desired shape; heating the article in the desired shape for a prescribed period of time; cooling the article; deforming the molded article into another shape by heat-softening at a temperature lower than said first heating; and cooling the deformed article to cause the article to harden.
Claim 14
Dependent Claim
22 words
Use of a lactide homopolymer, glycolide homopolymer or copolymer of lactide and glycolide for the manufacture of an article having shape-memory properties.
Claim 15
Dependent Claim
22 words
Use of a lactide homopolymer, glycolide homopolymer or copolymer of lactide and glycolide for the manufacture of an article having shape-memory properties.
Claim 16
Dependent Claim
25 words
Use of an article according to any one of claims 1 to 10 in a process wherein the article returns to a previously memorized shape.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.