IP Library › Granted Patent US 12,623,066
Granted Patent B2
US 12,623,066 · App. 18/326,915 · Granted May 12, 2026

Coupling mechanisms for medical devices

Inventors: Jeffery Arnett (Gilbert, AZ); Linus Hoi Chen Leung (Scarborough, CA); Moussa Chehade (Toronto, CA); John Paul Urbanski (Toronto, CA)
Assignee: Boston Scientific Medical Device Limited
A61M39/10A61M25/0662A61M39/1011A61M2025/0681A61M2025/0687A61M2039/0229A61M2039/1016A61M2039/1061
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Quick Facts
Patent No.
US 12,623,066
App. No.
18/326,915
Granted
May 12, 2026
Kind
B2
Abstract

A releasable coupling mechanism for coupling a delivery catheter and a dilator. The delivery catheter comprising a first mating member at the proximal end and the dilator comprising a second mating member at the proximal end. The proximal end of the first mating member comprises a first coupling means for releasably receiving a second coupling means which is positioned at a distal end of the second mating member. The first coupling means comprising a coupling member the coupling member comprising a pair of engagement members positioned on opposing sides of the coupling member and configured to releasably engage the second coupling means. The first mating member further comprising at least one indicia perpendicular from the pair of engagement members. The indicia indicate an orientation of the first mating member such that the second mating member disengages from the coupling member by simultaneously deflecting the pair of engagement members.

Claims (28)

1 . A transseptal puncture system for crossing a septum of a patient's heart, the system comprising

a delivery catheter adapted for advancing through the patient's vasculature and defining a lumen, the delivery catheter having a proximal portion and a distal portion, the proximal portion including a catheter hub positioned at a proximal end of the delivery catheter, the catheter hub having a base portion and a separate hub cap that are configured to be coupled together using a snap fit arrangement, the hub cap positioned on top of the base portion to form an enclosure, an internal coupling member contained within the enclosure; and

a dilator adapted to translate longitudinally within the lumen of the delivery catheter, the dilator having a proximal portion including a dilator hub at a dilator proximal end, the dilator hub having a raised portion adapted to releasably engage with the internal coupling member of the delivery catheter;

wherein the internal coupling member includes a pair of engagement members positioned on opposing sides of the internal coupling member and configured to releasably engage the raised portion of the dilator hub, the pair of engagement members each including a first angled ramp defining an insertion force and a second angled ramp defining a removal force, wherein the insertion force and the removal force are equivalent;

wherein the hub cap includes at least one indicia indicative of a disengagement direction.

2 . The transseptal puncture system of claim 1 , wherein the at least one indicia is positioned perpendicularly offset from the pair of engagement members.

3 . The transseptal puncture system of claim 1 , wherein the at least one indicia is aligned with the pair of engagement members.

4 . The transseptal puncture system of claim 1 wherein the pair of engagement members extend radially inward toward a longitudinal center of the catheter hub.

5 . The transseptal puncture system of claim 1 , wherein the at least one indicia is selected from the group consisting of a tactile indicia and a visual indicia.

6 . The transseptal puncture system of claim 1 , wherein the at least one indicia is at least one beveled edge.

7 . The transseptal puncture system of claim 1 , wherein the dilator hub comprises a groove proximal to the raised portion, the groove having a diameter less than a diameter of the raised portion, such that when the dilator hub is inserted, the raised portion is configured to deflect the pair of engagement members.

8 . The transseptal puncture system of claim 7 wherein the groove is configured to accept and retain the pair of engagement members, such that the catheter hub and the dilator hub are longitudinally coupled, enabling the delivery catheter and the dilator to be advanced together.

9 . The transseptal puncture system of claim 1 , wherein the hub cap comprises an aperture configured to receive the dilator hub and wherein the hub cap further comprises a beveled face from an outer edge to the aperture.

10 . The transseptal puncture system of claim 9 , wherein the dilator hub comprises a beveled surface on a distal portion that corresponds to the beveled face whereby the beveled surface on the distal portion of the dilator hub is flushed with the beveled face of the hub cap when the dilator hub is engaged in the catheter hub.

11 . A transseptal puncture system for crossing a septum of a patient's heart, the system comprising

a delivery catheter adapted for advancing through the patient's vasculature and defining a lumen, the delivery catheter having a proximal portion and a distal portion, the proximal portion including a catheter hub positioned at a proximal end of the delivery catheter, the catheter hub having a base portion and a separate hub cap that are configured to be coupled together using a snap fit arrangement, the hub cap and the base portion forming an enclosure, an internal coupling member contained in the enclosure; and

a dilator adapted to translate longitudinally within the lumen of the delivery catheter, the dilator having a proximal portion including a dilator hub at a dilator proximal end, the dilator hub having a raised portion adapted to releasably engage with the internal coupling member of the delivery catheter;

wherein the internal coupling member includes a pair of orientation keys and a pair of engagement members positioned on opposing sides of the internal coupling member and configured to releasably engage the raised portion of the dilator hub, the pair of engagement members each including a first angled ramp defining an insertion force and a second angled ramp defining a removal force, the pair of orientation keys being offset from and extending away from the first angled ramp and the second angled ramp;

wherein the hub cap includes a pair of indicia indicative of a disengagement direction.

12 . The transseptal puncture system of claim 11 , wherein the pair of indicia are positioned perpendicularly offset from the pair of engagement members.

13 . The transseptal puncture system of claim 11 , wherein the pair of indicia are aligned with the pair of engagement members.

14 . The transseptal puncture system of claim 11 wherein the pair of engagement members extend radially inward toward a longitudinal center of the catheter hub.

15 . The transseptal puncture system of claim 11 , wherein the pair of indicia are selected from the group consisting of tactile indicia and visual indicia.

16 . The transseptal puncture system of claim 11 , wherein the pair of indicia includes a pair of opposing beveled edges.

17 . The transseptal puncture system of claim 11 , wherein the dilator hub comprises a groove proximal to the raised portion, the groove having a diameter less than a diameter of the raised portion, such that when the dilator hub is inserted, the raised portion is configured to deflect the pair of engagement members.

18 . The transseptal puncture system of claim 17 , wherein the groove is configured to accept and retain the pair of engagement members, such that the catheter hub and the dilator hub are longitudinally coupled, enabling the delivery catheter and the dilator to be advanced together.

19 . The transseptal puncture system of claim 11 , wherein the hub cap comprises an aperture configured to receive the dilator hub and wherein the hub cap further comprises a beveled face from an outer edge to the aperture.

20 . The transseptal puncture system of claim 19 , wherein the dilator hub comprises a beveled surface on a distal portion that corresponds to the beveled face whereby the beveled surface on the distal portion of the dilator hub is flushed with the beveled face of the hub cap when the dilator hub is engaged in the catheter hub.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 14, 2023
From: ARNETT, JEFFERY; URBANSKI, JOHN PAUL; CHEHADE, MOUSSA; LEUNG, LINUS
To: BAYLIS MEDICAL COMPANY INC.
Reel/Frame 064577/0929 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 14, 2023
From: BAYLIS MEDICAL COMPANY INC.
To: BOSTON SCIENTIFIC MEDICAL DEVICE LIMITED
Reel/Frame 064584/0142 →
Continuity (4)
Continuation 16682825 · Nov 13, 2019
Continuation In Part PCTIB2019053755 · May 8, 2019
Provisional Application 62668700 · May 8, 2018
Related Publication 20230381483A1 · Nov 30, 2023
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