Locking assembly for coupling guidewire to delivery system
Inventors
Chu, Kevin • Lee, Rolando • Welk, Craig • Tran, Bryant
Assignees
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Publication Number
US-12186215-B2
Publication Date
2025-01-07
Expiration Date
Abstract
A locking assembly for releasably coupling a first elongate member to a second elongate member is provided. The locking assembly can include a first lumen for anchoring the locking assembly to a catheter and a second lumen for releasably retaining a guidewire to the locking assembly. A release member can interface with the locking assembly and apply a force that decouples the guidewire from the locking assembly.
Core Innovation
A locking assembly includes a housing with a proximal end, a distal end, and a lateral wall portion. The housing defines a first lumen extending from the proximal end to the distal end, and a second lumen extending from the distal end, where the second lumen has a first diameter and a second diameter smaller than the first diameter. The second lumen is configured to releasably receive an elongated structure, and a sheath is configured to be advanced along the elongated structure to disengage the elongated structure from the second lumen.
In a contralateral-to-ipsilateral configuration, the locking assembly is configured to releasably couple a contralateral guidewire to an ipsilateral catheter by retaining a distal portion of the contralateral guidewire in the second lumen. The sheath is advanced along the contralateral guidewire and disengages the contralateral guidewire from the second lumen. The second lumen can include distal, intermediate, and proximal portions with diameter relationships to control retention.
The locking assembly can further include a recessed portion containing an elastomeric member or a retention member. The elastomeric member is retained in a recessed portion and can have an elastomer opening smaller than the second lumen to enhance retention while providing a guidewire-receiving opening. The system relates to deployment of a bifurcated vascular prosthesis/graft with main branch, ipsilateral branch, and contralateral branch portions.
Claims Coverage
Independent claims cover three related structures: a generic locking assembly for releasably receiving an elongated structure and disengaging it with a sheath; a specific locking assembly for releasably coupling a contralateral guidewire to an ipsilateral catheter; and a system releasably securing a first elongate member to a second elongate member using a housing with separate lumens and a disengaging sheath. Across the independent claims, the inventive features center on housing lumen geometry for retention and a sheath advanced along the elongate member to disengage it.
Housing lumens for releasably receiving and sheath disengagement
A housing comprising a proximal end, a distal end, and a lateral wall portion; a first lumen extending from the proximal end of the housing to the distal end of the housing; a second lumen extending from the distal end of the housing, the second lumen having a first diameter and a second diameter smaller than the first diameter, wherein the first or second diameter of the second lumen is smaller than a diameter of the first lumen; the second lumen configured to releasably receive the elongated structure; and a sheath configured to be advanced along the elongated structure and disengage the elongated structure from the second lumen.
Contralateral guidewire retained in second lumen and sheath disengagement
A locking assembly for releasably coupling a contralateral guidewire to an ipsilateral catheter, comprising a housing comprising a first lumen and a second lumen; the contralateral guidewire; the second lumen configured to retain a distal portion of the contralateral guidewire; and a sheath configured to be advanced along the contralateral guidewire and disengage the contralateral guidewire from the second lumen.
First and second lumens for releasably securing elongate members with sheath disengagement
A system for releasably securing a first elongate member to a second elongate member, comprising the first elongate member; the second elongate member; a housing; a first housing lumen extending within the housing and configured to receive the first elongate member; a second housing lumen extending within the housing and configured to receive the second elongate member; and a sheath configured to be advanced along the second elongate member and disengage the second elongate member from the second housing lumen.
The independent claims collectively require a housing with lumens that retain an elongated, guidewire, or elongate member and a sheath advanced along the retained member to disengage it, including a contralateral guidewire to ipsilateral catheter coupling configuration and a separate system claim for releasably securing a first and second elongate member using distinct housing lumens.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Deployment of a bifurcated vascular prosthesis/graft with main branch, ipsilateral branch, and contralateral branch portions.
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