Hemostatic gasket and valve assembly

Claim 2

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.

Claim 3

A gasket as in claim 1, wherein the back conical face further includes a chamfered lip about the lumen for aligning a catheter passing therethrough.

Claim 4

A gasket as in claim 1, wherein a notch is formed at the center of the split septum to facilitate passage of a catheter therethrough.

Claim 5

A gasket as in claim 1, wherein the front face and back face are conically tapered at angles in the range from about 45° to 75° relative to the axial direction.

Claim 6

A gasket as in claim 2, wherein the lip is chamfered at an angle in the range from about 20° to 40° relative to the axial direction.

Claim 7

A gasket as in claim 1, wherein the gasket is formed from silicone rubber.

Claim 8

A hemostatic sealing assembly comprising: 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.

Claim 9

A hemostatic sealing assembly comprising: 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.

Claim 10

A hemostatic sealing assembly as in claim 7, wherein the housing further includes a luer fitting on the outer shell thereof.

Claim 11

A hemostatic sealing assembly as in claim 7, wherein the housing further includes a branch connector open to the central passage.

Claim 12

A hemostatic sealing assembly as in claim 7, wherein the back conical face of the gasket further includes a chamfered lip about the lumen for aligning a catheter passing therethrough.

Claim 13

A hemostatic sealing assembly as in claim 7, wherein a notch is formed in the center of the split septum of the gasket to facilitate passage of a catheter therethrough.

Claim 14

A hemostatic sealing assembly as in claim 7, wherein the front face and back face of the gasket are conically tapered at angles in the range from about 45° to 75° relative to the axial direction.

Claim 15

A hemostatic sealing assembly as in claim 10, wherein the lip of the gasket is chamfered at an angle in the range from about 20° to 40° relative to the axial direction.

Claim 16

A hemostatic sealing assembly as in claim 10, wherein the gasket is formed from silicone rubber.

Claim 17

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.

Claim 18

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.

Claim 19

A gasket as in claim 15, wherein the lip is chamfered at an angle in the range from about 20° to 40° relative to the axial direction.

Claim 20

A hemostatic sealing assembly comprising: 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.

Claim 21

A hemostatic sealing assembly comprising: 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.

Claim 22

A hemostatic sealing assembly as in claim 17, wherein the lip of the gasket is chamfered at an angle in the range from about 20° to 40° relative to the axial direction.

Claim 23

A hemostatic sealing assembly as in claim 17, wherein the gasket is formed from silicone rubber.