Title:
組織適合な心臓弁縫製リング
Document Type and Number:
Japanese Patent JP2009544415
Kind Code:
A
Abstract:
A prosthetic heart valve sewing ring that is highly compatible with surrounding tissue by being made of a material that has physical properties similar to the surrounding tissue. The present invention provides an "iso-elastic" sewing ring, or one having an elasticity similar to that of soft tissue. Exemplary materials include silicone, polyurethane, polyurethane copolymers, rubber, and other hemocompatible and biocompatible thermoplastic elastomers. The material may have an elastic modulus between about 100 to 5000, up to 10,000 psi, and more preferably between 200 to 2000 psi, a tensile strength between about 5000 and 60,000 psi, and more particularly between about 5000 to 50,000 psi, and a tensile elongation between about 100 to 3000%, preferably between about 100 to 1000%. The sewing ring may be a fiber mat, monolithic, or may have a reinforcing fiber embedded therein to help prevent suture pull-out.
Inventors:
Davidson, Jim A.
Application Number:
JP2009521882A
Publication Date:
December 17, 2009
Filing Date:
July 03, 2007
Export Citation:
Assignee:
Edwards Lifesciences Corporation
International Classes:
A61L26/00; A61F2/24
Domestic Patent References:
| JP2005515836A | 2005-06-02 | |||
| JP2005501605A | 2005-01-20 |
Foreign References:
| US6197043B1 | 2001-03-06 |
Attorney, Agent or Firm:
Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita
Takaaki Yasumura
Natsuki Morishita