Hemostasis valve design for introducer sheath

Patent metadata

Field	Value
Publication number	US-2018126142-A1
Application number	US-201715806315-A
Country	US
Kind code	A1
Filing date	Nov 7, 2017
Priority date	Nov 9, 2016
Publication date	May 10, 2018
Grant date	—

Abstract

A hemostasis valve for use in a medical device. The hemostasis valve may include a generally cylindrical body having a proximal side, a distal side, and a thickness extending therebetween. The proximal side may include a tapered central region having a surface sloped towards a center of the body and the distal side may include a distally extending curved central region.

First claim

What is claimed is:

1 . A hemostasis valve for use in a medical device, the hemostasis valve comprising:
a generally cylindrical body designed to be disposed within a hub body of a medical device, the body having a proximal side and a distal side; wherein the proximal side includes a tapered central region having a surface sloped towards a diametrical center of the body; and wherein the distal side includes a distally extending curved central region.

2 . The hemostasis valve of claim 1 , wherein the body comprises an elastomeric silicone.

3 . The hemostasis valve of claim 1 , wherein the body comprises a liquid silicone rubber (LSR).

4 . The hemostasis valve of claim 1 , wherein the body comprises an enhanced tear resistant (ETR) silicone elastomer.

5 . The hemostasis valve of claim 1 , further comprising one or more slits formed in the body and extending at least partially through the body between the tapered central region and the curved central region of the body.

6 . The hemostasis valve of claim 5 , wherein the one or more slits are formed in a cross slit thru (CST) configuration.

7 . The hemostasis valve of claim 5 , wherein the one or more slits are formed in cross slit partial (CSP) configuration.

8 . The hemostasis valve of claim 5 , wherein the one or more slits are formed in a star slit thru (SST) configuration.

9 . The hemostasis valve of claim 1 , wherein the tapered central region is configured to guide a supplemental medical device to the diametrical center of the body.

10 . The hemostasis valve of claim 1 , wherein the body further comprises a flanged outer perimeter, the flanged outer perimeter configured to engage a hub body of a hemostasis valve assembly.

11 . A hemostasis valve assembly, comprising:
a hub body defining a cavity; a strain relief portion extending distally from the hub body; an end cap coupled to a distal end of the hub body; and a hemostasis valve positioned within the cavity of the hub body and coupled between the hub body and the end cap; wherein the hemostasis valve comprises a generally cylindrical valve body having a proximal side including a tapered central region having a surface sloped towards a diametrical center of the body and a distal side including a distally extending curved central region.

12 . The hemostasis valve assembly of claim 11 , wherein the valve body comprises an elastomeric silicone.

13 . The hemostasis valve assembly of claim 11 , wherein the valve body comprises a liquid silicone rubber (LSR).

14 . The hemostasis valve assembly of claim 11 , wherein the valve body comprises an enhanced tear resistant (ETR) silicone elastomer.

15 . The hemostasis valve assembly of claim 11 , further comprising one or more slits formed in the valve body and extending at least partially through the valve body between the tapered central region and the curved central region.

16 . The hemostasis valve assembly of claim 11 , wherein the valve body further comprises a flanged outer perimeter, the flanged outer perimeter configured to engage an interlocking groove in the hub body.

17 . The hemostasis valve assembly of claim 11 , wherein the valve body further comprises a first annular groove formed in the proximal side and a second annular groove formed in the distal side, the first annular groove configured to engage an interlocking feature in the end cap and the second annular groove configured to engage an interlocking feature in the hub body.

18 . The hemostasis valve assembly of claim 11 , wherein the tapered central region is configured to guide a medical device to the diametrical center of the valve body.

19 . A hemostasis valve assembly, comprising:
a hub body defining a cavity; a strain relief portion extending distally from the hub body; an end cap coupled to a distal end of the hub body; and a hemostasis valve positioned within the cavity of the hub body and coupled between the hub body and the end cap, the hemostasis valve comprising:
a generally cylindrical elastomeric valve body having a proximal side and a distal side;
a tapered central region having a surface sloped towards a diametrical center of the valve body on the proximal side thereof;
a distally extending curved central region on the distal side thereof;
a first annular groove formed in the proximal side;
a second annular groove formed in the distal side; and
a flanged outer perimeter.

20 . The hemostasis valve assembly of claim 19 , further comprising one or more slits formed in the valve body and extending at least partially through the valve body between the tapered central region and the curved central region.

Assignees

• Boston Scient Ltd

Inventors

• Agrawal Sumit
• Pepin Henry J
• Reddy Somashekar

Classifications

• A61M2039/0626

  used with other surgical instruments, e.g. endoscope, trocar · CPC title

• A61M2039/062

  used with a catheter · CPC title

• A61M2039/064

  Slit-valve · CPC title

• A61M39/06 Primary

  Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof · CPC title

• A61M2025/0098

  having a strain relief at the proximal end, e.g. sleeve · CPC title