US 10,588,656 B2 · Thrombectomy catheter

Abstract

A target substance, such as a thrombus, is removed from a patient's body via minimally invasive technique. A catheter is maneuvered and positioned near the target substance. The catheter may have a soft, atraumatic tip constructed from a metallic backbone covered by a polymer. Target substances are drawn into the catheter via an aspiration source. Near the catheter's distal end, a blade and opposing surface are housed within the catheter, and the blade moves relative to the opposing surface within the catheter lumen in order to fragment the target substance. The substances are fragmented within the catheter into discreet and relatively uniform particles. The aspiration source, which helps ensnare target substances, also serves to evacuate the substance fragments from the patient's body.

Claims30

Dependent claims

A system for removal of one or more target substances from a body passageway, the system comprising:

a catheter having a lumen, a proximal end, and a distal end, wherein a proximal end of the lumen is configured to be fluidly coupled to an aspiration source;
a cutting member having a leading cutting edge, the cutting member disposed in the lumen and configured for axial motion within the lumen between a proximal-most position and a distal-most position;
and
an opposing surface disposed within at a distal location in the lumen,
wherein the leading cutting edge of the cutting member is configured to contact the opposing surface and to shear target substance disposed between the leading edge and the opposing surface when the cutting member is positioned in the distal position;
wherein the opposing surface comprises a cone disposed distal to the cutting member, wherein the cutting member is configured so that the leading cutting edge of the cutting member engages a conical surface on the cone as the cutting member is advanced fully in a distal direction.

3 more elements

Dependencies are inferred from the claim text.

Thrombectomy catheter

Life of this patent

Thrombectomy catheter

Life of this patent

Abstract

Claims30