# US 2021/0275791 A1 · Peel away hemostasis valve

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- Number: US 2021/0275791 A1
- Document ID: US20210275791A1
- Status: Published application
- Kind: A1
- Application number: 17/330,856
- Filed: 2021-05-26
- Published: 2021-09-09
- Earliest claimed: 2017-11-06
- Assignees: ABIOMED, Inc.
- Applicants: ABIOMED, Inc.
- Inventors: Christopher Nason Korkuch; Glen R. Fantuzzi
- Web page: https://patentgrep.com/patent/US20210275791A1

## CPC

- A61M 39/06: Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof
- A61M 25/0668: {splittable, tear apart}
- A61M 39/0606: {without means for adjusting the seal opening or pressure (A61M39/0693 takes precedence)}
- A61M 60/13: by means of a catheter allowing explantation, e.g. catheter pumps temporarily introduced via the vascular system
- A61M 60/135: inside a blood vessel, e.g. using grafting
- A61M 60/216: including a rotating member acting on the blood, e.g. impeller
- A61M 60/414: transmitted by a rotating cable, e.g. for blood pumps mounted on a catheter
- A61M 60/865: Devices for guiding or inserting pumps or pumping devices into the patient's body
- A61M 60/89: Valves
- A61M 2025/0675: {Introducing-sheath slitters}
- A61M 2039/0626: {used with other surgical instruments, e.g. endoscope, trocar}
- A61M 2039/064: {Slit-valve}
- 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

A hemostasis valve body provides strong sealing around a medical device during insertion of the medical device into a blood vessel, low forces for tearing, and stability during insertion of the medical devices as well as during peel away. The valve body comprises a first surface, a second surface opposite the first surface, an edge, helical slits, and a pair of longitudinal cuts. The helical slits are positioned at a center of the valve body and traverse the first surface to the second surface. The helical slits provide a seal around the medical device. Each respective longitudinal cut extends from the first surface partially through the valve body to a depth short of the second surface for at least part of a length of the respective longitudinal cut. The longitudinal cuts facilitate a separation of the valve body into two parts during a peel away action.

## Claims

### Claim at position 1

-21. (canceled)

### Claim 22

A method of peeling away an introducer assembly having (1) an introducer hub, the introducer hub having (a) first and second wings located opposite each other, and (b) first and second notches located at midpoints between the first and second wings, (2) a hemostasis valve within the introducer hub, having first and second longitudinal cuts radially aligned with the first and second notches, and (3) an introducer sheath having a longitudinal scoring aligned with the first and second notches, the method comprising:
applying a first force to the first wing of the introducer hub in a first direction radial from the introducer sheath and a second force to the second wing of the introducer hub in a second direction opposite the first direction;
causing the first force and the second force to be transmitted to the first and second notches of the introducer hub, thereby breaking the first and second notches;
causing the hemostasis valve to break along the first and second longitudinal cuts; and
separating the introducer sheath along the longitudinal scoring.

### Claim 23 (depends on 22)

The method of claim 22, wherein the first direction and the second direction are radially toward the introducer sheath.

### Claim 24 (depends on 22)

The method of claim 22, wherein the first direction and the second direction are radially away from the introducer sheath.

### Claim 25 (depends on 22)

The method of claim 22, wherein applying the first force to the first wing of the introducer hub and the second force to the second wing of the introducer hub forces the first wing toward the second wing.

### Claim 26 (depends on 22)

The method of claim 22, wherein the first and second notches of the introducer hub have a minimum thickness of from 0.075 mm to 0.35 mm.

### Claim 27 (depends on 22)

The method of claim 22, further comprising separating the introducer sheath along a length of the introducer sheath, and peeling away the introducer sheath and the introducer hub.