# US 11,110,262 B2 · Percutaneous sheaths for use with percutaneous ventricular assist devices

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- Number: US 11,110,262 B2
- Document ID: US11110262B2
- Status: Granted
- Kind: B2
- Application number: 16/579,781
- Filed: 2019-09-23
- Published: 2021-03-25
- Granted: 2021-09-07
- Earliest claimed: 2019-09-23
- Assignees: Synecor LLC
- Applicants: Synecor LLC
- Inventors: Kevin Johnson; Richard S. Stack; William L. Athas
- Web page: https://patentgrep.com/patent/US11110262B2

## CPC

- A61M 60/13: by means of a catheter allowing explantation, e.g. catheter pumps temporarily introduced via the vascular system
- A61M 60/148: in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
- A61M 25/0097: {characterised by the hub (tube connectors or tube couplings A61M39/10)}
- A61M 25/0662: {Guide tubes}
- A61M 39/0613: {with means for adjusting the seal opening or pressure (A61M39/0693 takes precedence)}
- A61M 60/216: including a rotating member acting on the blood, e.g. impeller
- A61M 60/857: Implantable blood tubes
- A61M 60/865: Devices for guiding or inserting pumps or pumping devices into the patient's body
- A61M 60/88: Percutaneous cables
- A61M 60/892: Active valves, i.e. actuated by an external force
- A61M 2209/04: Tools for specific apparatus
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}

## Abstract

Percutaneous access sheaths used to provide access to the vasculature and heart for the introduction of percutaneous ventricular assist devices (pVADs), and to remain in place for the duration of pVAD use. The sheaths include actively closeable seals engageable to seal against the drive lines of the pVADs to minimize blood loss during pVAD use.

## Claims

### Claim 1

A percutaneous access sheath comprising:
an elongate tubular sheath having a sheath lumen and proximal and distal openings fluidly coupled to the sheath lumen;
a seal having a seal lumen; and
at least one compression member advanceable against a wall of the seal to push a portion of the wall into the lumen to move the seal lumen to a sealing position, wherein the at least one compression member includes a plurality of fingers pivotable to push at least partially opposed portions of the wall into the seal lumen; and an actuator moveable to simultaneously pivot the plurality of fingers to move the seal lumen to the sealing position.

### Claim 2 (depends on 1)

The sheath of claim 1 wherein the actuator is a rotatable knob.

### Claim 3 (depends on 1)

The sheath of claim 1, wherein the actuator is operatively associated with the fingers to cause the fingers to simultaneously move the portions into the seal lumen.

### Claim 4

A method of using a percutaneous sheath, comprising:
providing a percutaneous sheath having a sheath lumen and proximal and distal openings fluidly coupled to the sheath lumen, and a seal having a seal lumen; and
advancing at least one compression member against a wall of the seal to push a portion of the wall into the lumen to move the seal lumen to a sealing position, wherein advancing the at least one compression member includes moving an actuator to simultaneously pivot a plurality of fingers to push at least partially opposed portions of the wall into the seal lumen.

### Claim 5 (depends on 4)

The method of claim 4 wherein moving the actuator comprises rotating a rotatable knob to simultaneously pivot the plurality of fingers to move the seal lumen to the sealing position.

### Claim 6 (depends on 4)

The method of claim 4, wherein the seal lumen includes a longitudinal axis and wherein advancing the at least one compression member includes advancing the at least one compression member in a direction towards, and transverse to, the longitudinal axis.

### Claim 7 (depends on 4)

The method of claim 4, further including extending an instrument through the proximal and distal openings, the sheath lumen and the seal lumen, wherein advancing the compression member causes the seal to create sealing around the instrument to prevent fluids from passing around the instrument from within the sheath through the proximal opening.