IP Library › Granted Patent US 12702809
Granted Patent B2
US 12702809 · App. 18/116,619 · Granted Aug 11, 2026

Tuohy valve tightening port for percutaneous circulatory support device repositioning and axial locking

Inventors: Neeraj Kumar Sharma (New Delhi, IN); Sumit Agrawal (Haryana, IN); Rupesh Kumar Pahwa (Gurugram, IN); Qian Liu (Plymouth, MN)
Assignees: Boston Scientific Medical Device Limited; Boston Scientific Scimed, Inc.
A61M39/06A61M39/0613A61M60/13A61M60/865A61M2039/0258A61M2039/027A61M2039/0273A61M2039/062
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Quick Facts
Patent No.
US 12702809
App. No.
18/116,619
Granted
Aug 11, 2026
Kind
B2
Abstract

A tightening port for use with a hub of an introducer sheath includes a cartridge for reversible engagement with a proximal end of the hub, the cartridge having a proximal end and a distal end and a lumen extending therebetween, a seal positioned within the lumen of the cartridge, a lock nut having an inner portion positioned within the lumen of the cartridge and an outer portion configured for engagement with the proximal end of the cartridge, such that the inner portion of the lock nut is configured to push the seal to reduce a size of an opening of the seal.

Claims (26)

1 . A tightening port for use with a hemostasis valve hub of a sheath, the port comprising:

a cartridge for reversible engagement with a proximal end of the hemostasis valve hub, the cartridge having a proximal end and a distal end and a lumen extending therebetween;

a seal positioned within the lumen of the cartridge;

a lock nut having an inner portion positioned within the lumen of the cartridge and an outer portion configured for engagement with the proximal end of the cartridge, such that the inner portion of the lock nut is configured to extend distally from the outer portion into the lumen of the cartridge, to push the seal to reduce a size of an opening of the seal; and

a sleeve holder circumferentially surrounding and engaged with a proximal end of the lock nut.

2 . The tightening port of claim 1 , wherein the cartridge has a first portion having a first diameter and a second portion having a second diameter and the first diameter being less than the second diameter.

3 . The tightening port of claim 2 , wherein the first portion of the cartridge comprises at least one post extending radially from the first portion.

4 . The tightening port of claim 3 , wherein the at least one post is configured for engagement with at least one opening of the hemostasis valve hub for securing the tightening port to the hemostasis valve hub.

5 . The tightening port of claim 2 , wherein an outer surface of the second portion of the cartridge has a plurality of threads extending at least partially around the outer surface.

6 . The tightening port of claim 5 , wherein the outer portion of the lock nut comprises a threaded surface configured for engagement with the plurality of threads on the outer surface of the second portion of the cartridge to secure the lock nut to the cartridge.

7 . The tightening port of claim 1 , wherein the seal is a Tuohy seal.

8 . The tightening port of claim 1 , wherein the tightening port comprises a lumen that extends through the cartridge, the seal, and the lock nut such that the lumen is aligned with a longitudinal axis of the tightening port.

9 . The tightening port of claim 1 , wherein the lock nut comprises a proximally extending portion and the sleeve holder defines a lumen, and wherein the proximally extending portion is received within the lumen of the sleeve holder.

10 . The tightening port of claim 1 , wherein the seal is composed of silicone.

11 . A delivery system for at least one medical device into a blood vessel, the delivery system comprising:

a sheath having a proximal end and a distal end and configured for insertion through the blood vessel;

a hemostasis valve hub engaging with the proximal end of the sheath; and

a tightening port for engaging with a proximal end of the hemostasis valve hub, the tightening port comprising:

a cartridge for reversible engagement with a proximal end of the hemostasis valve hub, the cartridge having a proximal end and a distal end and a lumen extending therebetween;

a lumen for receiving the at least one medical device;

a seal positioned within the lumen of the cartridge;

a lock nut having an inner portion positioned within the lumen of the cartridge and an outer portion configured for engagement with the proximal end of the cartridge, such that the inner portion of the lock nut is configured to extend distally from the outer portion into the lumen of the cartridge, to push the seal to reduce a size of an opening of the seal; and

a sleeve holder circumferentially surrounding and engaged with a proximal end of the lock nut.

12 . The delivery system of claim 11 , wherein the cartridge comprises a first portion having a first diameter, a second portion having a second diameter and wherein the first diameter is less than the second diameter.

13 . The delivery system of claim 12 , wherein the seal is positioned adjacent a transition area between the first portion and the second portion.

14 . The delivery system of claim 13 , wherein the lock nut is configured to axially compress the seal to reduce the size of an opening of the seal.