Axial sharp needle reentry device
AssigneeUpstream Peripheral Technologies Ltd.
InventorsDan Rottenberg, Yossi Pesis, Avraham Matzkin
Life of this patent
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Abstract
A catheter, such as for use for total occlusion crossing and lumen reentry, incorporate a retractable long flexible nitinol curved needle at the catheter distal end. The needle is straight when withdrawn inside the catheter. When pushed forward, the needle is deployed by protruding axially out, directly from the distal tip, through a mechanism used to direct the curved needle into a specific radial direction. When pushed forward, the needle restores its curved shape and can penetrate the plaque or the media and intimal layers to reenter the true lumen.
Claims15
A catheter device comprising:
- a catheter shaft comprising a distal portion;
- a handle coupled to a proximal portion of said catheter shaft;
- a needle that passes through a lumen in said catheter shaft and said distal portion, said needle comprising a first straight section coupled to said handle, a curved section that extends distally from said first straight section, a second straight section that extends distally from said curved section, and a sharp tip at a most distal end of said needle.
Dependencies are inferred from the claim text.