Sheath for sealed access to a vessel

Patent metadata

Field	Value
Publication number	US-11730939-B2
Application number	US-201515323660-A
Country	US
Kind code	B2
Filing date	Jul 6, 2015
Priority date	Jul 4, 2014
Publication date	Aug 22, 2023
Grant date	Aug 22, 2023

Abstract

A sheath for producing a fully sealed access to the interior of a vessel of an animal or human body comprises a base sheath having a tubular body defining a pass-through channel. The base sheath is adapted to be inserted into the vessel through a vessel aperture. The sheath further comprises an expansion device which is adapted to cooperate with the base sheath such that the outer diameter of the sheath increases in the region of the vessel aperture with the sheath in a stationary position in the vessel and upon actuation of the expansion device.

First claim

The invention claimed is:

1. A sheath assembly for producing a fully sealed access to an interior of a vessel of an animal or human body, comprising:
a base sheath having a tubular body with a distal end and a proximal end the tubular body defining a pass-through channel that is open from the distal end to the proximal end of the base sheath, with the base sheath being configured to be inserted into the vessel through a vessel aperture, wherein the pass-through channel has an inner diameter configured to receive a catheter through the pass-through channel; and
an expansion sheath that is disposed over an exterior of the tubular body of the base sheath, wherein, with the base sheath disposed through the vessel aperture and in a stationary position in the vessel, the expansion sheath is configured to be displaceable over the exterior of the tubular body of the base sheath and along a length of the tubular body and to increase an outer diameter of the sheath assembly in a region of the vessel aperture such that a portion of the sheath assembly contacts the vessel aperture to close and seal the vessel aperture thereby providing sealed access to the interior of the vessel;
wherein the pass-through channel of the base sheath is configured such that the catheter is axially displaceable through the pass-through channel of the base sheath independently of the base sheath and expansion sheath when the sheath assembly is within the vessel.

2. A sheath assembly for producing a fully sealed access to an interior of a vessel of an animal or human body comprising:
a base sheath having a tubular body with a distal end and a proximal end, the tubular body defining a pass-through channel that is open from the distal end to the proximal end of the base sheath, with the base sheath being configured to be inserted into the vessel through a vessel aperture, wherein the pass-through channel has an inner diameter configured to receive a catheter through the pass-through channel; and
an expansion device configured as an inflation tube that is spirally wound around the base sheath, wherein, with the base sheath disposed through the vessel aperture and in a stationary position in the vessel, the inflatable tube is inflatable to increase an outer diameter of the sheath assembly in a region of the vessel aperture such that a portion of the sheath assembly contacts the vessel aperture to close and seal closcs and c Is the vessel aperture thereby providing sealed access to the interior of the vessel;
wherein the pass-through channel of the base sheath is configured such that the catheter is axially displaceable through the pass-through channel of the base sheath independently of the base sheath and expansion device when the sheath assembly is within the vessel.

3. A sheath assembly for producing a fully sealed access to an interior of a vessel of an animal or human body, comprising:
a base sheath having a tubular body with a distal end and a proximal end, the tubular body defining a pass-through channel that is open from the distal end to the proximal end of the base sheath, with the base sheath being configured to be inserted into the vessel through a vessel aperture, wherein the pass-through channel has an inner diameter configured to receive a catheter through the pass-through channel; and
an expansion device including a flexible portion that forms a part of the tubular body of the base sheath between the proximal end and the distal end, wherein with the base sheath disposed through the vessel aperture and in a stationary position in the vessel, the flexible portion is configured to radially expand so as to increase an outer diameter of the sheath assembly in a region of the vessel aperture when the distal end of the base sheath is pulled in a direction of the proximal end by means of a pulling means such that a portion of the sheath assembly contacts the vessel aperture to close and seal the vessel aperture thereby providing sealed access to the interior of the vessel;
wherein the pass-through channel of the base sheath is configured such that the catheter is axially displaceable through the pass-through channel of the base sheath independently of the base sheath and expansion device.

4. A sheath assembly for producing a fully sealed access to an interior of a vessel of an animal or human body, comprising:
a base sheath having a tubular body with a distal end and a proximal end, the tubular body defining a pass-through channel that is open from the distal end to the proximal end of the base sheath, with the base sheath being configured to be inserted into the vessel through a vessel aperture, wherein the pass-through channel has an inner diameter configured to receive a catheter through the pass-through channel; and
an expansion device including a stretchable portion that forms a part of the tubular body of the base sheath between the proximal end and the distal end, the stretchable portion is configured to attain a first thickness in a stretched condition and a second thickness, which is larger than the first thickness, in an unstretched condition when the proximal end of the base sheath is released in a direction of the vessel aperture from the stretched condition to the unstretched condition;
wherein, with the base sheath disposed through the vessel aperture and in a stationary position in the vessel, the stretchable portion is configured to be released to the unstretched condition to increase an outer diameter of the sheath assembly in a region of the vessel aperture such that a portion of the sheath assembly contacts the vessel aperture to close and seal the vessel aperture and thereby provide providing sealed access to the interior of the vessel;
wherein the pass-through channel of the base sheath is configured such that the catheter is axially displaceable through the pass-through channel of the base sheath independently of the base sheath and expansion device.

5. The sheath assembly for producing the fully sealed access according to claim 1 , comprising a sleeve which encases the base sheath and the expansion sheath such that the sleeve is in contact with the vessel aperture in the stationary position of the sheath assembly for producing the fully sealed access in the vessel.

6. The sheath assembly for producing the fully sealed access according to claim 1 , comprising a sleeve which encases the base sheath and the expansion sheath such that the sleeve is in contact with the vessel aperture in the stationary position of the sheath assembly for producing the fully sealed access in the vessel, and that the expansion sheath is axially displaceable on the base sheath between the base sheath and the sleeve to increase a diameter of the sleeve in the region of the vessel aperture.

7. The sheath assembly for producing the fully sealed access according to claim 1 , wherein the expansion sheath is configured to increase the outer diameter of the sheath assembly for producing the fully sealed access in the region of the vessel aperture by 0.33 mm to 1.00 mm.

8. The sheath assembly for producing the fully, sealed access according to claim 1 , wherein a wall of the tubular body of the base sheath has a through Channel extending in the wall from the distal end toward the proximal end.

9. The sheath assembly for producing the fully sealed access according to claim 8 , wherein the through channel is configured to conduct blood from the vessel to the proximal end of the sheath assembly for producing the frilly sealed access.

10. The sheath assembly for producing the fully sealed access according to claim 9 , comprising a blood pressure measuring device which is connected to the through channel.

11. The sheath assembly for producing the f

Assignees

• Abiomed Europe Gmbh

Inventors

• Siess Thorsten
• Nix Christoph
• Kirchhoff Frank
• O'Carrol Ger

Classifications

• A61B5/0215

  by means inserted into the body · CPC title

• A61M39/0247 Primary

  Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body (peritoneal dialysis catheters A61M1/285; tracheostomy devices A61M16/0465; measuring pressure within the body A61B5/03; colostomy devices A61F5/445; gastrotomy feeding tubes A61J15/0015; means for fixing a feeding tube outside of the body A61J15/0053) · CPC title

• A61M39/02 Primary

  Access sites · CPC title

• A61M39/06

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

• A61M60/13

  by means of a catheter allowing explantation, e.g. catheter pumps temporarily introduced via the vascular system · CPC title