A Heart Plaque Removal Tool That Cuts Both Ways

This patent describes a medical device for clearing blocked arteries that can cut away plaque both forwards and backwards using a single tool, while giving the doctor consistent feedback.

What it covers

This atherectomy system is designed to remove plaque from inside blood vessels. It uses a single atherectomy tool that has a cutting part at its tip (distal region) for forward-moving ablation (anterograde) and another cutting part further back (proximal region) for backward-moving ablation (retrograde). A handle lets the doctor move an actuation member in one direction to cut forward and in a second direction to cut backward. The clever part is that the system is built to give the doctor the same feeling or feedback, no matter which direction the tool is cutting, as stated in the abstract.

What it doesn't cover

• —Does not cover atherectomy systems that require two separate tools for anterograde and retrograde plaque removal.
• —Does not cover systems where the doctor receives different tactile feedback when the tool is cutting in different directions.
• —Does not cover atherectomy tools that can only remove plaque in one direction, either forward or backward.
• —Does not cover systems that lack a drive coil or a proximal handle with an actuation member for controlling the tool.

The clever bit

The truly novel aspect is combining both forward (anterograde) and backward (retrograde) plaque removal capabilities into a single atherectomy tool, while ensuring the doctor gets the exact same tactile feedback regardless of the cutting direction. This simplifies the procedure and improves control.

Why it matters

Atherectomy is a procedure to remove plaque that builds up in arteries, which can lead to serious health problems like heart attacks or strokes. Having a single tool that can effectively clear blockages in both directions could make these procedures faster and potentially more complete. It could also simplify the process for doctors by providing consistent control and feel.

Real-world examples

• 1.Rotational atherectomy devices
• 2.Directional atherectomy catheters
• 3.Orbital atherectomy systems