IP Library › Granted Patent US 12,369,970
Granted Patent B2
US 12,369,970 · App. 18/453,585 · Granted Jul 29, 2025

Epicardial access system and methods

Inventors: John Paul Urbanski (Toronto, CA); Brock Miller (Toronto, CA); Rund Abou-Marie (Mississauga, CA)
Assignee: Boston Scientific Medical Device Limited
A61B18/1477A61B18/1492A61B2017/320791A61B17/3417A61B2018/00083A61B2018/00196A61B2018/00351A61B2018/00363A61B2018/00577A61B2018/00601A61B2090/3966
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Quick Facts
Patent No.
US 12,369,970
App. No.
18/453,585
Granted
Jul 29, 2025
Kind
B2
Abstract

A method and apparatus are disclosed for a needle for gaining access to the pericardial cavity of a heart. The needle includes an elongate member (e.g. a main shaft) defining a lumen and a side-port in fluid communication with the lumen; a blunt atraumatic tip for delivering energy for puncturing tissue; and a guiding surface (e.g. a ramp) for directing a device (e.g. a guidewire) through the side-port. The method includes using the needle for tenting a pericardium and delivering energy for puncturing the pericardium, and advancing a guidewire or other device through the needle and into the pericardial cavity.

Claims (27)

1. A needle for use with a guidewire for gaining epicardial access, the needle comprising:

an elongate member which is comprised of a metal and defines a lumen and a side-port having a proximal edge, the side-port being in fluid communication with the lumen;

an insulation covering an outside of the elongate member wherein a blunt tip of the needle is electrically exposed to define an electrode for delivering energy for puncturing tissue, the insulation including an aperture and an insulation portion extending past the proximal edge of the side-port, wherein part of the elongate member adjacent the side-port is exposed within the aperture; and

a guiding surface extending from a side wall of the elongate member opposite the side-port, the guiding surface configured to direct the guidewire from the lumen and out the side-port.

2. The needle of claim 1 , wherein the needle is configured to deliver energy through a metal side wall of elongate member to the electrode.

3. The needle of claim 2 , wherein the electrode has greater radiopacity than the elongate member.

4. The needle of claim 2 , further comprising insulation on an inner surface of the elongate member adjacent to the side-port to reduce electrical leakage.

5. The needle of claim 2 , further comprising insulation on an inner surface of most or substantially all the elongate member to reduce electrical leakage.

6. The needle of claim 2 , wherein the part of the elongate member adjacent the side-port is distal of the side-port and is electrically exposed to define an elongate member exposed portion.

7. The needle of claim 1 , wherein the insulation portion is configured to reduce abrasive friction between the device and the proximal edge of the side-port as the device is advanced through the side-port.

8. The needle of claim 1 , wherein the side-port is capsule-shaped.

9. The needle of claim 1 , wherein a distal edge of the side-port includes a bevel.

10. The needle of claim 9 , wherein the bevel includes a combination of rounded and flat portions.

11. The needle of claim 1 , wherein the proximal edge of the side-port is beveled proximally from an outer surface of the elongate member towards the lumen.

12. The needle of claim 1 , wherein the guiding surface has a generally S-shaped surface.

13. The needle of claim 1 , wherein a distal end of the guiding surface is beveled, whereby the insulation portion which covers a proximal part of the side-port and the distal end of the guiding surface facilitate the device being guided out of a side of the needle and in a forward direction when advanced out of the side-port.

14. A needle for use with a guidewire for gaining epicardial access, the needle comprising:

an elongate member which is comprised of a metal and defines a lumen and a side-port having a proximal edge, the side-port being in fluid communication with the lumen;

an insulation covering an outside of the elongate member wherein a blunt tip of the needle is electrically exposed to define an electrode for delivering energy for puncturing tissue, the insulation including an aperture and an insulation portion extending past the proximal edge of the side-port, wherein part of the elongate member adjacent the side-port is exposed within the aperture; and

a guiding surface extending from a side wall of the elongate member opposite the side-port, the guiding surface configured to direct the guidewire from the lumen and out the side-port;

wherein a distal end of the guiding surface is beveled so as to direct the guidewire in a distal direction upon exiting the side-port.

15. The needle of claim 14 , wherein the needle is configured to deliver energy through a metal side wall of elongate member to the electrode.

16. The needle of claim 15 , further comprising insulation on an inner surface of the elongate member adjacent to the side-port, the insulation configured to reduce electrical leakage.

17. The needle of claim 14 , wherein the insulation portion is configured to reduce abrasive friction between the device and the proximal edge of the side-port as the device is advanced through the side-port.

18. The needle of claim 14 , wherein the side-port is capsule-shaped.

19. The needle of claim 14 , wherein a distal edge of the side-port includes a bevel.

20. The needle of claim 19 , wherein the bevel includes a combination of rounded and flat portions.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 22, 2023
From: URBANSKI, JOHN PAUL; MILLER, BROCK; ABOU-MARIE, RUND
To: BAYLIS MEDICAL COMPANY INC.
Reel/Frame 064665/0228 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 22, 2023
From: BAYLIS MEDICAL COMPANY INC.
To: BOSTON SCIENTIFIC MEDICAL DEVICE LIMITED
Reel/Frame 064827/0207 →
Continuity (4)
Continuation 17014144 · Sep 8, 2020
Continuation 15754030
Provisional Application 62216059 · Sep 9, 2015
Related Publication 20230389980A1 · Dec 7, 2023
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