Interwoven dual sinusoidal helix stent

A radially expandable stent for implantation within a body vessel, comprising:

• a first wire having a preformed series of peaks alternating with valleys therein, each peak and valley being connected by a substantially straight segment, the first wire having a proximal end and a distal end;
• a second wire having a preformed series of peaks alternating with valleys therein, each peak and valley being connected by a substantially straight segment, the second wire having a proximal end and a distal end;
• the first wire being interwoven with the second wire such that each valley of the first wire is interwoven with one respective peak of the second wire with each interweaving forming a braid, the braid having a first outer diameter, the first outer diameter of one or more braids are flattened using a means whereby a wall thickness of the braid is reduced resulting in a second outer diameter of the braid which is less than the first outer diameter;
• the interwoven first and second wires being wound into a continuous helix having a hollow cylindrical shape;
• and
• the peaks and valleys of the first wire symmetrically intersecting with the peaks and valleys of the second wire to form a uniform series of crossings thereby permitting even expansion of the first and second wires.

A radially expandable stent for implantation within a body vessel, comprising:

• a first wire having a preformed series of peaks alternating with valleys therein, each peak and valley being connected by a substantially straight segment, the first wire having a proximal end and a distal end;
• a second wire having a preformed series of peaks alternating with valleys therein, each peak and valley being connected by a substantially straight segment, the second wire having a proximal end and a distal end;
• the first wire being interwoven with the second wire such that each valley of the first wire is interwoven with one respective peak of the second wire with each interweaving forming a braid, the braid having a first outer diameter, the first outer diameter of one or more braids are flattened using a means whereby a wall thickness of the braid is reduced resulting in a second outer diameter of the braid which is less than the first outer diameter;
• the interwoven first and second wires being wound into a continuous helix having a hollow cylindrical shape;
• and
• the proximal end of the first wire being attached to the proximal end of the second wire, and the distal end of the first wire being attached to the distal end of the second wire.

A method for making a stent body for implantation within a body vessel comprising:

• preforming a first wire into a sinusoidal wave pattern having a series of peaks alternating with valleys, each peak and valley being connected by a substantially straight segment, the first wire having a proximal end and a distal end;
• preform a second wire into a sinusoidal wave pattern having a series of peaks alternating with valleys, each peak and valley being connected by a substantially straight segment, the second wire having a proximal end and a distal end;
• interweaving the first wire with the second wire such that each valley of the first wire is braided with one respective peak of the second wire with each interweaving forming a braid, the braid having a first outer diameter, the first outer diameter of one or more braids are flattened using a means whereby a wall thickness of the braid is reduced resulting in a second outer diameter of the braid which is less than the first outer diameter;
• and
• winding the interwoven first and second wires on a cylindrical mandrel into a continuous helix having a cylindrical shape such that the alternating peaks and valleys are retained.

A radially expandable stent for implantation within a body vessel, comprising:

• a first wire having a preformed series of peaks alternating with valleys therein, each peak and valley being connected by a substantially straight segment, the first wire having a proximal end and a distal end;
• a second wire having a preformed series of peaks alternating with valleys therein, each peak and valley being connected by a substantially straight segment, the second wire having a proximal end and a distal end;
• the first wire being interwoven with the second wire such that at least a pair of immediately adjacent peaks of the first wire are interwoven with at least a pair of respective counterpart immediately adjacent valleys of the second wire with each interweaving forming a braid, the braid having a first outer diameter, the first outer diameter of one or more braids are flattened using a means whereby a wall thickness of the braid is reduced resulting in a second outer diameter of the braid which is less than the first outer diameter;
• and
• the interwoven first and second wires being wound into a continuous helix having a hollow cylindrical shape.

A radially expandable stent for implantation within a body vessel, comprising:

• a first wire having a preformed series of peaks alternating with valleys therein, each peak and valley being connected by a substantially straight segment, the first wire having a proximal end and a distal end;
• a second wire having a preformed series of peaks alternating with valleys therein, each peak and valley being connected by a substantially straight segment, the second wire having a proximal end and a distal end;
• the first wire being interwoven with the second wire such that at least a pair of immediately adjacent peaks of the first wire are interwoven with at least a pair of respective counterpart immediately adjacent valleys of the second wire with each interweaving forming a braid, the braid having a first outer diameter, the first outer diameter of one or more braids are flattened using a means whereby a wall thickness of the braid is reduced resulting in a second outer diameter of the braid which is less than the first outer diameter;
• the interwoven first and second wires being wound into a continuous helix having a hollow cylindrical shape;
• and
• the peaks and valleys of the first wire symmetrically intersecting with the peaks and valleys of the second wire to form a uniform series of crossings thereby permitting even expansion of the first and second wires.

A radially expandable stent for implantation within a body vessel, comprising:

• a first wire having a preformed series of peaks alternating with valleys therein, each peak and valley being connected by a substantially straight segment, the first wire having a proximal end and a distal end;
• a second wire having a preformed series of peaks alternating with valleys therein, each peak and valley being connected by a substantially straight segment, the second wire having a proximal end and a distal end;
• the first wire being interwoven with the second wire such that at least a pair of immediately adjacent peaks of the first wire are interwoven with at least a pair of respective counterpart immediately adjacent valleys of the second wire with each interweaving forming a braid, the braid having a first outer diameter, the first outer diameter of one or more braids are flattened using a means whereby a wall thickness of the braid is reduced resulting in a second outer diameter of the braid which is less than the first outer diameter;
• the interwoven first and second wires being wound into a continuous helix having a hollow cylindrical shape;
• and
• the proximal end of the first wire being attached to the proximal end of the second wire, and the distal end of the first wire being attached to the distal end of the second wire.

A method for making a stent body for implantation within a body vessel comprising:

• preforming a first wire into a sinusoidal wave pattern having a series of peaks alternating with valleys, each peak and valley being connected by a substantially straight segment, the first wire having a proximal end and a distal end;
• preforming a second wire into a sinusoidal wave pattern having a series of peaks alternating with valleys, each peak and valley being connected by a substantially straight segment, the second wire having a proximal end and a distal end;
• interweaving the first wire with the second wire such that at least a pair of immediately adjacent peaks of the first wire are braided with at least a pair of respective immediately adjacent valleys of the second wire with each interweaving forming a braid, the braid having a first outer diameter, the first outer diameter of one or more braids are flattened using a means whereby a wall thickness of the braid is reduced resulting in a second outer diameter of the braid which is less than the first outer diameter;
• and
• winding the interwoven first and second wires on a cylindrical mandrel into a continuous helix having a cylindrical shape such that the alternating peaks and valleys are retained.