Method and arrangement for implanting or explanting an intravascular catheter
AssigneeSiemens Aktiengesellschaft
InventorPer Nyman
Life of this patent
Estimating the term…
Abstract
A method and apparatus facilitate movement of a catheter through a blood vessel in a direction substantially parallel to the longitudinal extent of the catheter, by mechanically oscillating the catheter to impart movement at least to the distal end of the catheter in a direction substantially transversely to the longitudinal extent of the catheter. The oscillatory movement transverse to the longitudinal extent of the catheter continuously repels the catheter from the walls of the vessel in which the catheter is disposed, thereby reducing friction between the catheter and the blood vessel and making movement of the catheter within the vessel easier for implantation and explantation of the catheter.
Claims18
A method for facilitating movement of a catheter having a proximal end and a distal end through a blood vessel in a direction substantially parallel to a longitudinal extent between said proximal and distal ends of said catheter, comprising the steps of:
- connecting said catheter to a mechanical oscillator;
- and
- oscillating said catheter with said oscillator to impart movement at least to said distal end of said catheter substantially transversely to said longitudinal extent for reducing friction between said catheter and said blood vessel.
An apparatus for facilitating movement of a catheter through a blood vessel in a direction substantially parallel to a longitudinal extent of said catheter, said apparatus comprising:
- a catheter having a proximal end and a distal end with a longitudinal extent therebetween;
- and
- mechanical oscillator means comprising an electromechanical transducer disposed at said distal end of said catheter for oscillator said catheter to impart movement to at least said distal end of said catheter substantially transversely to said longitudinal extent of said catheter for reducing friction between said catheter and said blood vessel.
An apparatus as claimed in claimed 10 wherein said electromechanical transducer is disposed inside said catheter at said distal end of said catheter.
An apparatus for facilitating movement of a catheter through a blood vessel in a direction substantially parallel to a longitudinal extent of said catheter, said apparatus comprising:
- a catheter having a proximal end and a distal end with a longitudinal extent therebetween;
- and
- mechanical oscillator means comprising a control wire disposed inside said catheter co-extensive with said longitudinal extent and having a bend at an end thereof disposed at said distal end of said catheter, and means for rotating said control wire, for oscillating said catheter to impart movement to at least said distal end of said catheter substantially transversely to said longitudinal extent of said catheter for reducing friction between said catheter and said blood vessel.
An apparatus for facilitating movement of a catheter through a blood vessel in a direction substantially parallel to a longitudinal extent of said catheter, said apparatus comprising:
- a catheter having a proximal end and a distal end with a longitudinal extent therebetween;
- and
- mechanical oscillator means comprising a control wire having a plurality of outer contours eccentrically deviating from a rectilinear course of said control wire, said control wire extending through said catheter between said proximal end and said distal end, and means for rotating said control wire in said catheter, for oscillating said catheter to impart movement to at least said distal end of said catheter substantially transversely to said longitudinal extent of said catheter for reducing friction between said catheter and said blood vessel.
Dependencies are inferred from the claim text.