Apparatus and methods for loading an endovascular implant into a delivery catheter
Inventors
Sattell, Jack B. • Rezac, David A. • Bonin, Alexander
Assignees
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Publication Number
US-12064361-B2
Publication Date
2024-08-20
Expiration Date
Abstract
An apparatus for loading an endovascular shunt into a delivery catheter includes a base, a boss rod connected to, and extending longitudinally across, the base, and a plurality of guide bosses slidably coupled to the boss rod. The guide bosses include a delivery catheter guide boss coupled to the delivery catheter, a malecot holding tube guide boss, wherein a malecot holding tube is connected to a first lateral side of the malecot guide boss extending towards the delivery catheter guide boss, a claw assembly guide boss, where a claw assembly is attached to a first lateral side of the claw guide boss extending towards the malecot holding tube guide boss, and a chase pin guide boss, wherein a chase pin is connected to a first lateral side of the chase pin guide boss extending towards the claw assembly guide boss.
Core Innovation
The document describes an endovascular shunt loader system for preparing and loading an endovascular shunt assembly into a delivery catheter. The endovascular shunt assembly includes a shunt body and a malecot attached to a distal end of the shunt body, and the system includes a delivery catheter configured to receive the endovascular shunt into a transfer tube by operation of the endovascular shunt loader.
In a first embodiment, the endovascular shunt loader uses a drive carriage slidably mounted on a guide base with a plurality of guide slots extending longitudinally along the plate. Each guide slot follows a respective predetermined path configured to guide lateral movement of a respective guide boss, and each guide boss includes a guide pin inserted into a respective guide slot so that the lateral position of each guide boss follows the path of the respective guide slot as the drive carriage is moved longitudinally relative to the guide base.
The first embodiment laterally manipulates shunt components, including a transfer tube, a malecot holding tube and malecot holding tube cover, and a claw assembly, to compress and then release the malecot and stretch and collapse the shunt into a reduced-profile delivery configuration. In a second embodiment, an endovascular shunt loader loads the shunt into the catheter using a boss rod mechanism with guide bosses and bump and stop features and a claw assembly with a chase pin and a locking mechanism.
Claims Coverage
The document provides coverage for two independent apparatus claims with multiple inventive features. The claims center on mechanically coupled guide systems that translate relative longitudinal motion into controlled lateral movement of guide bosses to load an endovascular shunt into a transfer tube, and a separate boss-rod-based configuration for delivery catheter loading and related component arrangement.
Guide-slot driven lateral movement of guide bosses during longitudinal drive carriage motion
A guide base comprising a plate having a plurality of guide slots extending longitudinally along the plate, each guide slot following a respective predetermined path configured to guide lateral movement of a respective guide boss, and a drive carriage slidably mounted to the guide base with a frame extending laterally across the guide base and a plurality of guide bosses slidably mounted to the frame, each guide boss having a guide pin inserted into a respective guide slot such that the lateral position of each guide boss follows the path of the respective guide slot as the drive carriage is moved longitudinally relative to the guide base to load the endovascular shunt into the transfer tube.
Transfer tube guide boss retaining the transfer tube for loading the endovascular shunt
The plurality of guide bosses includes a transfer tube guide boss which retains a transfer tube into which the endovascular shunt is loaded by operation of the endovascular shunt loader.
Boss rod and slidably coupled guide bosses for catheter, malecot holding tube, claw assembly, and chase pin
A base; a boss rod connected to, and extending longitudinally across, the base; and a plurality of guide bosses slidably coupled to the boss rod, including a delivery catheter guide boss with a compression fitting coupled to the delivery catheter, a malecot holding tube guide boss with a malecot holding tube, a claw assembly guide boss with a claw assembly, and a chase pin guide boss with a chase pin.
Overall claim coverage centers on mechanically coupled guide systems that translate relative longitudinal motion into controlled lateral movement of guide bosses to load an endovascular shunt into a transfer tube, and a separate boss-rod-based configuration that uses multiple slidably coupled guide bosses arranged for delivery catheter loading, malecot holding tube retention, claw assembly interaction, and chase pin arrangement.
Stated Advantages
Documented Applications
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