Hemostatic gasket and valve assembly
First Claim
1. A two-stage hemostatic gasket comprising a cylindrical body composed of an elastomeric material, said body having a front conical face, a back conical face, and an axial lumen extending therebetween, wherein a split septum is integrally formed in the axial lumen within the front conical face, said split septum defining axially-deflectable flaps extending across said axial lumen, said flaps configured to deflect outside said axial lumen when engaged by a catheter passing therethrough.
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Accused Products
Abstract
A hemostatic sealing assembly comprises a valve housing and a two-stage hemostatic gasket. The gasket is disposed in an enlarged recess within a shell component of the housing and held in place by a terminal plug. The front and rear faces of the gasket are conically tapered as are the mating surfaces and the housing shell and terminal plug, respectively. In this way, the gasket can be radially compressed to provide a desired degree of both sliding seal and static seal.
122 Citations
19 Claims
- 1. A two-stage hemostatic gasket comprising a cylindrical body composed of an elastomeric material, said body having a front conical face, a back conical face, and an axial lumen extending therebetween, wherein a split septum is integrally formed in the axial lumen within the front conical face, said split septum defining axially-deflectable flaps extending across said axial lumen, said flaps configured to deflect outside said axial lumen when engaged by a catheter passing therethrough.
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7. A hemostatic sealing assembly comprising:
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a two-stage hemostatic gasket comprising a cylindrical body composed of an elastomeric material, said body having a front conical face, a back conical face, and an axial lumen extending therebetween, wherein a split septum is integrally formed in the axial lumen within the front conical face, said split septum defining axially-deflectable flaps extending across said axial lumen, said flaps configured to deflect outside said axial lumen when engaged by a catheter passing therethrough; and a valve housing including (1) an outer shell having a central passage with an enlarged threaded receptacle at one end thereof and (2) a connector having a central passage and a threaded shank which is received in the receptacle, wherein the receptacle provides a conical surface to mate with the front conical face of the gasket and the connector provides a conical surface to mate with the back conical surface of the gasket, whereby the gasket can be entrapped in the receptacle with sealing forces being adjusted by axially positioning the connector. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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- 15. A two-stage hemostatic gasket comprising a cylindrical body composed of an elastomeric material, said body having a front conical face, a back conical face, and an axial lumen extending therebetween, wherein a split septum is integrally formed in the axial lumen within the front conical face, and wherein the back conical face further includes a chamfered lip about the lumen for aligning a catheter passing therethrough.
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17. A hemostatic sealing assembly comprising:
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a two-stage hemostatic gasket comprising a cylindrical body composed of an elastomeric material, said body having a front conical face, a back conical face, and an axial lumen extending therebetween, wherein a split septum is integrally formed in the axial lumen within the front conical face, and wherein the back conical face of the gasket further includes a chamfered lip about the lumen for aligning a catheter passing therethrough; and a valve housing including (1) an outer shell having a central passage with an enlarged threaded receptacle at one end thereof and (2) a connector having a central passage and a threaded shank which is received in the receptacle, wherein the receptacle provides a conical surface to mate with the front conical face of the gasket and the connector provides a conical surface to mate with the back conical surface of the gasket, whereby the gasket can be entrapped in the receptacle with sealing forces being adjusted by axially positioning the connector. - View Dependent Claims (18, 19)
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Specification