Embolic protection system
Inventors
Huynh, Christopher K. • Carley, Michael T. • Ginn, Richard S. • Tanner, Adam Robert
Assignees
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Publication Number
US-12232948-B2
Publication Date
2025-02-25
Expiration Date
Abstract
Configurations are described for assisting execution of a percutaneous procedure while protecting the vascular pathway to the target treatment area. One example is directed to an embolic protection system for deploying a device to a distal location across a diseased vessel, the embolic protection system which may include an expandable introducer, an embolic protection device, and a loading sleeve.
Core Innovation
The invention relates to an embolic protection device and system intended to prevent plaque and thrombus from embolizing during percutaneous vascular and cardiac interventions. The system includes an embolic protection device having a catheter shaft and a distal expandable filter, and the expandable filter includes a mouth that can be opened and closed by a filter actuator located at or towards a proximal end of the embolic protection device.
The mouth of the expandable filter includes a hoop wire connected by an actuation wire to the filter actuator. A filter dilator is insertable into a lumen of the catheter shaft, and the filter dilator comprises a filter dilator tip that includes a circumferential channel. The circumferential channel captures or retains the hoop wire of the mouth when the mouth is closed by the actuation wire.
An expandable introducer is provided to at least assist in introducing the embolic protection device into the vasculature. A peel-away loading sleeve may be used with separable elements sized to receive the embolic protection device into the expandable introducer, and the separable elements may be twist-off locked by a locking cap before the sleeve is removed to enable separation.
Claims Coverage
The document contains two independent claims. Each independent claim defines an embolic protection architecture centered on a distal expandable filter with an open/close mouth actuated by a proximal actuator via hoop wire and actuation wire, together with a filter dilator tip having a circumferential channel that captures or retains the hoop wire when the mouth is closed; the second independent claim additionally requires an expandable introducer to assist introducing the device into the vasculature.
Expandable filter with actuator-controlled hoop-wire mouth
An expandable filter provided at a distal end of the catheter shaft; a filter actuator located at or towards a proximal end of the embolic protection device, the filter actuator operable to open and close a mouth of the expandable filter, wherein the mouth of the expandable filter includes a hoop wire connected by an actuation wire to the filter actuator.
Filter dilator tip with circumferential channel capturing hoop wire
A filter dilator insertable into a lumen of the catheter shaft, wherein the filter dilator comprises a filter dilator tip, and wherein the filter dilator tip includes a circumferential channel to capture or retain the hoop wire of the mouth of the expandable filter when the mouth of the expandable filter is closed by the actuation wire.
Expandable introducer to assist introducing the embolic protection device
An expandable introducer to at least assist in introducing the embolic protection device into the vasculature.
Across the independent claims, the core inventive structure is the coordinated interaction between the proximal filter actuator, the hoop wire/actuation wire controlling the expandable filter mouth, and the filter dilator tip circumferential channel configured to capture or retain the hoop wire when the mouth is closed; the broader system independent claim adds an expandable introducer to assist in introducing the embolic protection device into the vasculature.
Stated Advantages
Helps prevent plaque and thrombus embolization during percutaneous vascular/cardiac interventions.
Documented Applications
Percutaneous vascular and cardiac interventions, including delivery contexts such as TAVR, where embolic protection is used to prevent plaque/thrombus embolization.
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