← Back to Patent Explorer
WO1989000841A1 Expired / Lapsed WO ⏱️ 0.0 years remaining

Protective shield for prosthetic heart valves

Assignee: St Jude Medical LLC
•
Filing: 1988-07-27
•
Granted: —
•
Expires: 2008-07-27
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract The invention relates to a protective shield (40) which covers the sewing cuff (21) and sutures of implanted prosthetic heart valves. The protective shield is made from, or coated with, a material that is bio and blood-compatible and non-thrombogenic, such as polished pyrolytic carbon or acetal polymer. The protective shield typically consists of a ring (51) with optimal inner (53) and outer flanges (52) to accommodate various prosthetic heart valve designs.

Inventors

  • 👤 Walt C. Lillehei
  • 👤 John H. Wang
  • 👤 Avrom M. Brendzel

Bibliographic Details

Application Number —
Jurisdiction WO
Data Source google_patents
Last Synchronized 2026-10-23 04:10
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2409; A61F2/2403

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

US4078268A Cited
US4364126A Cited
US4532659A Cited

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag