Transintimal recanalisation device

Claim 1

A transintimal recanalisation device comprising: a guide tube having a bend in its length, a flexible hollow needle having a bevelled end and located in said tube, wherein said needle is movable from a covered position wherein said bevelled end is within the tube to an uncovered position in which said bevelled end is exposed and has a bend in its length which conforms with the bend in the tube thereby enabling said bevelled end to adopt a desired orientation with respect to the tube; means for manoeuvering the needle with respect to the tube, said manoeuvering means including a first body connected to an end of said needle spaced from the bevelled end, said first body having a first aperture therethrough in communication with said needle; a second body connected to an end of said tube wherein said second body is provided with a first aperture therethrough to allow the passage of said needle; wherein said first or second body has a second aperture extending from said first aperture to a surface of the body; and wherein said first and second bodies are provided with cooperating alignment means whereby cooperation of said means results in the bevelled end of the needle adopting a desired orientation, said alignment means including a cooperating protrusion and recess; and said first and second bodies further including means for indicating the relative position of the bevelled end of the needle with respect to an end of said tube spaced from said second body; and, wherein said indicating means is provided by the cooperation of a protrusion with one of at least two spaced apart apertures.

Claim 6

A method of assembling a flexible transintimal recanalisation device adapted to be guided through the vasculature of a patient having a guide tube (2), a flexible needle (1) having a bevelled end (A) and located in said tube (2), a body (4) connected to an end of the needle (1) spaced from said bevelled end (A) and means for enabling the bevelled end (A) to adopt a desired orientation with respect to the tube (2) wherein said method comprises the steps of threading the end of the needle (1) spaced from said bevelled end (A) through the guide tube (2) until it extends beyond an end of the tube (2) and connecting said body (4) to the end of the needle (1).

Claim 7

A method of assembling a flexible transintimal recanalisation device adapted to be guided through the vasculature of a patient having a guide tube (2), a flexible needle (1) having a bevelled end (A) and located in said tube (2), a body (4) connected to an end of the needle (1) spaced from said bevelled end (A) and means for enabling the bevelled end (A) to adopt a desired orientation with respect to the tube (2) wherein said method comprises the steps of threading the end of the needle (1) spaced from said bevelled end (A) through the guide tube (2) until it extends beyond an end of the tube (2) and connecting said body (4) to the end of the needle (1).

Claim 8

A method of assembling a transintimal recanalisation device having a guide tube with a bend in its length, a flexible hollow needle having a bevelled end and located in said tube and means for enabling the bevelled end to adopt a desired orientation with respect to the tube wherein said method comprises the steps of threading a stylette into the needle until an end of the stylette extends beyond the bevelled end of the needle, inserting the needle and stylette into the tube until a desired position is reached and withdrawing the stylette.

Claim 9

A method of assembling a transintimal recanalisation device having a guide tube with a bend in its length, a flexible hollow needle having a bevelled end and located in said tube and means for enabling the bevelled end to adopt a desired orientation with respect to the tube wherein said method comprises the steps of threading a stylette into the needle until an end of the stylette extends beyond the bevelled end of the needle, inserting the needle and stylette into the tube until a desired position is reached and withdrawing the stylette.