Article including segment which is elastically shirrable after manufacture
US4908247A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1987 |
| Grant date | Mar 13, 1990 |
| Priority date | — |
| Expiry date | Apr 10, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24983
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An article including at least one segment which is capable of being elastically shirred along at least a portion of its length subsequent to manufacture of the article, preferably by mechanical manipulation of a predetermined portion of the elastically shirrable segment. The predetermined mechanically manipulatable portion of the elastically shirrable segment preferably comprises an elastomeric monomer which is maintained in a prestretched and tensioned condition in the desired direction of shirring. The opposed ends of the elastically shirrable segment in the article are interconnected to one another through the prestretched and tensioned elastomeric member. The prestretched and tensioned elastomeric member is also secured in fixed relation to at least one rigidifying member to form a composite structure which is strong enough to resist collapse in a direction parallel to the tensile forces acting upon the prestretched and tensioned elastomeric member prior to mechanical manipulation of the composite structure. The article is elastically shirred by mechanically manipulating the predetermined portion of the shirrable segment until movement of the prestretched and tensioned elastome…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.