Patent ID: 11918753
Assignee: TRACTUS VASCULAR, LLC
Field: Medical technology (Instruments)
Classification: CPC A  B  F | IPC A  B  F

Claim 0:
1. A process for resolving total or partial body lumen blockages, said process comprising:
(a) inserting a catheter into a body lumen having a blockage,
said catheter comprising an elongated tube having an exterior and an interior, an internal lumen, a distal end and a proximal end, and a laser cut section between said distal and proximal ends comprising substantially 90% to 99% of the length of said catheter, which is able to transmit rotary and axial motion from said proximal end to said distal end; wherein
(i) said laser cut section comprises a continuous, uniform helical cut pattern having a constant cut angle forming rows of interlocking teeth with a constant pitch between adjacent rows of interlocking teeth, said helical cut pattern making from 4 to 12 repetitions around said catheter;
(ii) said proximal end of the tube having a solid, uncut section;
(iii) said distal end of the tube having a solid, uncut section;
(iv) said tube interior has a polymer layer thereon and such interior polymer layer forms said internal lumen; and
(v) said tube exterior has a polymer coating;
whereby said catheter is able to flex without substantial separation of said polymer coating from the exterior; then

(b) transmitting an axial push force from said distal end to said proximal end to cross the blockage and to advance said catheter beyond the blockage.