Polarizable delivery mechanism for medical device deployment
AssigneeCook Medical Technologies LLC
InventorsKarol Lagodzki, Jeremy Schaeffer
Life of this patent
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Abstract
A delivery device assembly for delivering a medical device to a target site within a patient includes a first polarizable tine and a second reactive tine that is not polarized. The first tine is connected to a first wire that has an electric coil surrounding a portion of the first wire. A current is passed through the electric wire to cause the polarizable tine to become polarized, thereby causing the reactive tine that is not coupled to the electric coil to move toward the polarized tine. The relative movement of the tines releases the medical device from its attachment to the tines.
Claims20
A system for deploying a medical device, the system comprising:
- a delivery mechanism including a pusher element having a body portion with a proximal end and a distal end;
- a first wire coupled to the pusher element and including a first tine extending from the distal end of the pusher element;
- a second wire coupled to the pusher element and including a second tine extending from the distal end of the pusher element;
- a medical device having a proximal part and a distal part, wherein the proximal part is detachably attached to the first and second tines;
- a polarizing device operatively connected to the first wire but not the second wire, wherein the polarizing device causes the first wire and first tine to become polarized when activated;
- and
- wherein the first tine has a polarized state and an unpolarized state, and the second tine is drawn toward the first tine when the first tine is in the polarized state.
A polarizable delivery device for a medical device, the delivery device comprising:
- a first wire having a proximal end and a distal end and including a first tine at the distal end;
- a second wire extending along the first wire, the second wire having a proximal end and a distal end and including a second tine at the distal end;
- an electric coil surrounding a portion of the first wire and not surrounding any portion of the second wire, wherein the electric coil is capable of producing an electric current therethrough that creates a polarized condition of the first wire but does not polarize the second wire;
- wherein the first tine and second tine are biased outward when current is not running through the electric coil and the first wire is not polarized;
- and
- wherein the first tine and second tine move relatively toward each other when current is running through the electric coil and the first wire is polarized by the electric coil.
A method for delivering a medical device, the method comprising:
- inserting toward a target site within a patient's body a medical device assembly including a medical device detachably attached to a polarizable delivery mechanism, wherein the polarizable delivery mechanism comprises:
- a first wire having a proximal end and a distal end and including a first tine at the distal end, the first tine attached to the medical device;
- a second wire extending along the first wire, the second wire having a proximal end and a distal end and including a second tine at the distal end, the second tine attached to the medical device;
- and
- a polarizing device operatively coupled to a portion of the first wire and not coupled to any portion of the second wire;
- activating the polarizing device to polarize the first wire but not the second wire;
- in response to polarizing the first wire but not the second wire, attracting the second tine toward the first tine;
- and
- in response to attracting the second tine toward the first tine, detaching the medical device from the polarizable delivery mechanism.
Dependencies are inferred from the claim text.