Introducer sheath

• US 10,709,875 B2
• Filed: 01/07/2016
• Issued: 07/14/2020
• Est. Priority Date: 01/07/2015
• Status: Active Grant

• Current Assignee: ABIOMED Europe GmbH (Johnson & Johnson)
• Original Assignee: ABIOMED Europe GmbH (Johnson & Johnson)
• Inventors: O'Carrol, Ger, Siess, Thorsten, Aboulhosn, Walid
• Primary Examiner(s): Stigell, Theodore J
• Application Number:
  US15/541,528
• Publication Number:
  US 20180001062A1
• Time in Patent Office: 1,650 Days
• CPC Class Codes: A61M 2025/0675 Introducing-sheath slitters
• CPC Class Codes: A61M 25/0074 Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable
• CPC Class Codes: A61M 25/0097 characterised by the hub connectors A61M39/10
• CPC Class Codes: A61M 25/0668 splittable, tear apart
• CPC Class Codes: A61M 39/06 Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof

Abstract

An introducer sheath (10) comprises a tubular body (11) with a distal portion (12) and a proximal portion (13), the proximal portion (13) being configured to be inserted into the patient'"'"'s body. Introducer sheath can be separated along its length in a longitudinal direction. The introducer sheath (10) further comprises at least a first handle (15) which is pivotable about a fulcrum (21). The first handle (15) has a first end portion (151) and a free second end portion (152) so as to form a lever, such that pivoting the handle (15) about the fulcrum (21) causes a contacting portion (23) of the handle to act on a respective counter portion (24) that is operatively connected to the distal portion (12) of the tubular body (11). This creates a breaking force that causes the distal portion (12) of the tubular body (11) to break.

Claims

1. An introducer sheath for providing access in a patient'"'"'s body, comprising:

a tubular body with a distal portion and a proximal portion, the proximal portion being configured to be inserted into the patient'"'"'s body to allow a medical device to be inserted through the introducer sheath into the patient'"'"'s body, the introducer sheath being structured to facilitate complete separation along its length in a longitudinal direction to allow removal from the medical device, the medical device extending through the tubular body of the introducer sheath; and

at least one handle which is pivotably attached to the distal portion of the tubular body via a hinge so as to be pivotable about a fulcrum, a first handle of the at least one handle having a first end portion and a free second end portion so as to form a lever, such that pivoting the first handle about the fulcrum causes a contacting portion of the first handle to act on a respective counter portion that is operatively connected to the distal portion of the tubular body, thereby creating a breaking force that causes the distal portion of the tubular body to break, and, thereby, allowing the introducer sheath to be separated along its length such that the introducer sheath can be removed from the medical device.

2. The introducer sheath according to claim 1, wherein the fulcrum is disposed eccentrically in the first end portion of the first handle and the contacting portion is disposed at an edge of the first end portion.

3. The introducer sheath according to claim 2, wherein the edge of the first end portion of the first handle is curved.

4. The introducer sheath according to claim 1, wherein a distance between the fulcrum and the contacting portion is larger than a distance between the fulcrum and a portion of an edge of the first end portion adjacent the contacting portion.

5. The introducer sheath according to claim 1, wherein the at least one handle comprises a second handle, wherein the first and second handles are diametrically opposed with respect to the tubular body.

6. The introducer sheath according to claim 5, wherein the first and second handles are pivotably attached to the distal portion of the tubular body.

7. The introducer sheath according to claim 5, wherein the counter portion is a contacting portion of the second handle, wherein the contacting portion of the second handle acts on the contacting portion of the first handle.

8. The introducer sheath according to claim 1, wherein the first handle extends from the distal portion of the tubular body at an angle between 45°

and 90°

in an unstressed condition.

9. The introducer sheath according to claim 8, wherein the first handle extends from the distal portion of the tubular body at an angle between 60°

and 80°

in an unstressed condition.

10. The introducer sheath according to claim 1, wherein the first handle is pivotably attached to the distal portion of the tubular body such that pivoting in a direction towards the proximal portion of the tubular body causes the distal portion to break.

11. The introducer sheath according to claim 1, wherein the first handle comprises an engagement portion configured to engage a locking member such that the first handle is prevented from pivoting.

12. The introducer sheath according to claim 11, further comprising a locking member wherein the locking member is configured to be manipulated to be in or out of engagement with the engagement portion of the first handle by at least one of threads, a hook and a clip.

13. The introducer sheath according to claim 12, wherein the locking member is a locking cap.

14. The introducer sheath according to claim 1, wherein at least the distal portion of the tubular body comprises a longitudinal notch forming a predetermined breaking line.

15. The introducer sheath according to claim 1, comprising a hemostatic valve in the distal portion of the tubular body, wherein the first handle is attached to the hemostatic valve.

16. The introducer sheath according to claim 1, wherein the medical device comprises a catheter.

17. The introducer sheath according to claim 16, wherein the medical device further comprises an axial blood pump arranged at a tip of the catheter.

18. The introducer sheath according to claim 1, wherein the first handle has a handle axis passing through the fulcrum and the free second end portion, and intersecting the longitudinal axis of the sheath.

19. The introducer sheath according to claim 1, wherein a distance between the contacting portion and the fulcrum is less than a distance between the free second end portion of the at least first handle and the fulcrum.

20. The introducer sheath according claim 1, wherein the hinge comprises at least one pin arranged along the fulcrum and at least one cavity that receives the at least one pin.