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US 10,441,771 B2Granted
Hemostasis valves and related components and methods
AssigneesMerit Medical Systems, Inc., ABIOMED, Inc.
InventorsBryan Bickhart, Christopher A. Heine, Mary L. Milone, John Murphy
Life of this patent
Estimating the term…
Abstract
Hemostasis valves and hemostasis valve assemblies can be coupled to a proximal end of an introducer sheath to prevent blood loss through the proximal end of the introducer sheath. Some hemostasis valve assemblies may include an elastomeric member with a variable-width channel that is designed to form a liquid-tight seal over elongate members of different diameter or a single elongate member of variable diameter.
Claims19
A hemostasis valve assembly comprising:
- a housing;
- an elastomeric member at least partially disposed within the housing, the elastomeric member forming a variable-width channel that extends at least partway through the elastomeric member;
- wherein the elastomeric member comprises:
- a first sealing surface defining a first diameter;
- a first relief surface defining a second diameter that is larger than the first diameter;
- a second sealing surface defining a third diameter, wherein the third diameter differs in size from the first diameter and is smaller than the second diameter;
- and
- a second relief surface defining a fourth diameter that is larger than the third diameter;
- wherein the first sealing surface is proximal of the first relief surface, the first relief surface is proximal of the second sealing surface, and the second sealing surface is proximal of the second relief surface;
- and
- a foam member configured to secure the elastomeric member at least partially within the housing,
- wherein the foam member provides structural support against the proximal end of the elastomeric member.
9 more elements
A hemostasis valve assembly comprising:
- an elastomeric member, wherein the elastomeric member comprises:
- a first sealing surface defined by an innermost surface of a first inward-extending protrusion;
- a first relief surface distal of the first sealing surface;
- a second sealing surface defined by an innermost surface of a second inward-extending protrusion;
- and
- a second relief surface distal of the second sealing surface;
- wherein the first protrusion is configured to bend into a first relief space formed by the first relief surface, and wherein the second protrusion is configured to bend into a second relief space defined by the second relief surface as an elongate member is advanced within the hemostasis valve assembly;
- and
- a housing comprising a foam member configured to secure the elastomeric member at least partially within the housing,
- wherein the foam member is disposed proximal to the elastomeric member.
7 more elements
Dependencies are inferred from the claim text.