Patent · US Active

Collagen sponge

US9655997B2 · kind B2 · utility

0Cited by

0References

15Claims

0Family size

Assignee

GEISTLICH PHARMA AG · CH

Inventors

Cornel Imhof · Luzern, CH
Lothar Schloesser · Darmstadt, DE
Niklaus STIEFEL · Luzern, CH
Martin Wüest · Chur, CH

Key dates

Filing date	Dec 15, 2015
Grant date	May 23, 2017
Priority date	—
Expiry date	Dec 15, 2035

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61L2430/34
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A resilient resorbable chemically crosslinked collagen sponge for promoting soft tissue volume augmentation in the oral region, comprising 60-96% (w/w) collagen and 4-40% (w/w) elastin, which shows by mercury intrusion porosimetry interconnected pores with a median pore diameter between 50 and 90 μm and at least 80% porosity with a pore diameter more than 10 μm, an onset temperature of 45 to 57° C. and a density in dry state from 50 to 65 mg/cm3. A process for preparing a resilient resorbable chemically crosslinked collagen sponge. A method of using a resilient resorbable chemically crosslinked collagen sponge as an implant in the oral cavity for soft tissue volume augmentation.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.