Guide wire
AssigneesWilliam A. Cook Australia Pty. Ltd., Cook Incorporated, William Cook Europe ApS
InventorsDavid Ernest Hartley, Frank Karhu Christiansen
Life of this patent
Estimating the term…
Abstract
A guide wire (1) to assist percutaneous endovascular deployment which has zones of varying stiffness. An elongate central zone (3) of high stiffness, a proximal zone (4) of transition from high stiffness to semi-stiffness and a distal zone (5) of transition from high stiffness to being relatively flexible. The distal zone (5) has three zones, a semi stiff zone (11) adjacent the central zone, a transition zone (13) being of flexibility of from semi-stiff extending to flexible and a tip zone (15) being of high flexibility. The distal tip has a small J curve (16) to ensure that it is atraumatic in vessels and to prevent damage to the aortic heart valve. The distal zone (5) can also have a large curve to assist with anchoring the guide wire into the aortic arch.
Claims34
A guide wire to assist percutaneous endovascular deployment, the guide wire having zones of varying stiffness comprising:
- an elongate central zone of high stiffness;
- a proximal zone of transition from high stiffness to semi-stiffness;
- and
- a distal zone of transition from high stiffness to being relatively flexible.
A guide wire to assist percutaneous endovascular deployment comprising:
- a mandrel of substantially constant diameter along its length in a central zone;
- a proximal portion of the mandrel having a proximal tapered portion with a proximal wire coil on and extending along the proximal tapered portion;
- a distal portion of the mandrel comprising in order from the central zone;
- and
- a distal tapered portion and a portion of constant reduced diameter with a distal wire coil on and extending along the distal tapered portion and the portion of constant reduced diameter.
A guide wire for a medical device, the guide wire having a proximal end and a distal end and being of a type which is relatively stiff intermediate the distal end and the proximal end and having more flexible proximal and distal tips.
A guide wire for a medical device, the guide wire having a proximal end and a distal end and being of a type which is relatively stiff intermediate the distal end and the proximal end and having tapered and more flexible proximal and distal tips.
A guide wire for assisting the deployment of an endovascular device, the endovascular device having a guide wire catheter through which the guide wire is inserted in use, the guide wire having a proximal end and a distal end and being relatively stiff intermediate the distal end and the proximal end, the guide wire having more flexible proximal and distal tips, a pre-formed bend adjacent the distal end to assist with deployment of the deployment device into portions of the vasculature which are already curved such as the thoracic arch, the distal tip being formed into a part circular shape or pigtail to assist with preventing damage to vasculature as the device is deployed and the proximal tip being formed into a rounded shape to assist with insertion through the guide wire catheter of the endovascular device.
Dependencies are inferred from the claim text.