Magnetically enhanced injection catheter
First Claim
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1. A catheter for injecting therapeutic into tissue, the catheter comprising:
- an elongated shaft having a proximal end, a distal end, a lumen extending therethrough; and
a magnetic field source slidably coupled to the elongated shaft,wherein the magnetic field source is adapted to generate a magnetic field that affects movement of the therapeutic,wherein the magnetic field source comprises an electromagnet surrounding the elongated shaft.
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Abstract
A catheter adapted to deliver therapeutic or diagnostic agents to a target tissue of a human body is disclosed. A catheter in accordance with the present invention comprises a magnetic field source for directing the flow of the therapeutic of diagnostic agent. The therapeutic or diagnostic agent may be conjugated with diamagnetic particles, ferromagnetic particles, super paramagnetic particles, or paramagnetic particles.
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Citations
23 Claims
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1. A catheter for injecting therapeutic into tissue, the catheter comprising:
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an elongated shaft having a proximal end, a distal end, a lumen extending therethrough; and a magnetic field source slidably coupled to the elongated shaft, wherein the magnetic field source is adapted to generate a magnetic field that affects movement of the therapeutic, wherein the magnetic field source comprises an electromagnet surrounding the elongated shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for injecting therapeutic into tissue comprising:
a catheter and a fluid to be injected by the catheter; wherein the catheter comprises; an elongated shaft having a proximal end, a distal end, and a lumen extending therethrough; and a magnetic field source coupled to the shaft, the magnetic field source moveable to different positions with respect to the lumen while coupled to the shaft, the magnetic filed source comprising an electromagnet, the magnetic field source surrounding the shaft, wherein the magnetic field source is adapted to generate a magnetic field to affect movement of the therapeutic; and wherein the fluid comprises; a therapeutic; and magnetic particles. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. An injection catheter for delivering therapeutic to a target tissue, comprising:
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a lumen having a piercing end; a magnetic field source surrounding the lumen, the magnetic field source moveable to different positions with respect to the lumen while coupled to the lumen; and a source of fluid in communication with the lumen, the fluid conjugated with magnetic particles. - View Dependent Claims (19, 20, 21, 22, 23)
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Specification