Surgical stapler buttress assembly with humidity tolerant adhesive
US10238388B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2015 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | Dec 1, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/00951
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A buttress assembly is configured to temporarily adhere to a wet surgical stapler end effector. The buttress assembly includes a buttress body and a humidity tolerant adhesive. The adhesive includes a bioabsorbable polymer having a block configuration selected from the group consisting of A-B-A and A-B-C. The A block is a bioabsorbable homopolymer characterized by a glass transition temperature of at least about 0° C., a crystallinity as measured by X-ray diffraction of at least about 30%, and a melting temperature of at least about 50° C. The B block is a bioabsorbable homopolymer or co-polymer that is characterized by a glass transition temperature of at least about −40° C., a crystallinity as measured by X-ray diffraction of at most about 25%, and 2 a molecular weight of from about 20 to about 80 kDa. The C block is a bioabsorbable hydrophilic homopolymer or co-polymer that is miscible with water at 37° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.