Percutaneous catheter system for implant delivery
Inventors
SOLANKI, Chirag Maheshbhai • SINGHVI, Abhijeet • PANDEY, Shivanshu
Assignees
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Publication Number
US-12268416-B2
Publication Date
2025-04-08
Expiration Date
Abstract
A catheter system for implant delivery is provided. The delivery system includes a primary rotary knob and a secondary rotary knob. The primary rotary knob moves a catheter shaft to load or unload an implant whereas the secondary rotary knob is connected to an inner shaft. The inner shaft comprises an implant holder to engage with the implant during loading and unloading. The movement of the inner shaft due to rotation of the secondary rotary knob improves positioning of the implant and ensures detachment of the implant from the implant holder due to micro movements of the implant holder.
Core Innovation
The invention provides a percutaneous catheter for delivery of an implant. The catheter includes a primary rotary knob connected with a catheter shaft to facilitate longitudinal movement of the catheter shaft for loading and unloading an implant, and a secondary rotary knob connected with an inner shaft to facilitate longitudinal movement of the inner shaft.
The secondary rotary knob is connected to a threaded wheel engaged with the secondary rotary knob through threads. An eccentric luer having a guidewire port is connected to a guidewire shaft, and at least one luer arm connected to the eccentric luer is positioned so that its longitudinal axis is parallel to, but radially distant from, a longitudinal axis passing through the center of the guidewire port and the guidewire shaft.
The threaded wheel includes at least one groove cut into a cross-sectional surface, and the at least one luer arm passes through the at least one groove in the threaded wheel. The arrangement produces longitudinal micro-movement of an implant holder and ensures controlled detachment of the implant, with optional safety pin/slot to lock secondary knob movement and optional indicating and radiopaque markers on components including the tip, capsule, and/or the guidewire shaft.
Claims Coverage
The independent claim covers a percutaneous catheter for delivery of an implant with coordinated longitudinal actuation using a primary rotary knob and a secondary rotary knob driving an inner shaft through a threaded wheel with radially offset luer arm(s). It includes structural routing of a luer arm through grooves in the threaded wheel using an eccentric luer and a guidewire port to enable longitudinal translation based on rotary motion.
Percutaneous catheter with dual-knob longitudinal actuation
A percutaneous catheter for delivery of an implant comprising a primary rotary knob connected with a catheter shaft to facilitate longitudinal movement of the catheter shaft, and a secondary rotary knob connected with an inner shaft to facilitate longitudinal movement of the inner shaft.
Threaded wheel driven by secondary rotary knob
The secondary rotary knob is connected to a threaded wheel, the threaded wheel engaged with the secondary rotary knob through threads.
Eccentric luer with guidewire port and radially distant luer arm axis
An eccentric luer having a guidewire port connected to a guidewire shaft; and at least one luer arm connected to the eccentric luer, the at least one luer arm positioned so that a longitudinal axis of the at least one luer arm is parallel to, but radially distant from, a longitudinal axis that passes through a center of the guidewire port and the guidewire shaft.
Grooved threaded wheel with luer arm passing through groove for longitudinal wheel travel
At least one groove cut into the threaded wheel, the at least one groove being accessible from at least one cross-sectional surface of the threaded wheel; wherein the at least one luer arm is configured to pass through the at least one groove in the threaded wheel, and the threaded wheel is configured to move in a longitudinal direction over the at least one luer arm based on rotary motion of the secondary rotary knob.
Overall, the claim coverage centers on a dual-knob percutaneous catheter architecture where the secondary rotary knob produces longitudinal movement of a threaded wheel, using an eccentric luer with radially offset luer arm(s) passing through grooves to enable longitudinal translation based on rotary motion.
Stated Advantages
Improves positioning and ensures implant detachment through controlled longitudinal micro-movement of an implant holder.
Documented Applications
Transcatheter/transvascular delivery of prosthetic heart valve, stent, valve, mesh, balloon, patch, drug-containing matrix, shunt, and related implants.
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