Bladder wall drug delivery system
First Claim
Patent Images
1. A method of delivering drugs into a bladder wall, comprising:
- advancing a needleless delivery tip on a catheter into proximity with a bladder wall;
illuminating the bladder wall with a light projection system having a wavelength corresponding to diseased tissue;
identifying the diseased tissue with a micro-camera; and
delivering a treatment drug to the diseased tissue through an orifice in the needleless delivery tip.
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Abstract
A catheter based drug delivery system for minimally invasive delivery of treatment drugs into a bladder wall. The catheter system can include a delivery tip for deforming the bladder wall before forming jets of drug solution that penetrate the bladder wall for needleless delivery of the treatment drugs directly to the diseased tissue. The delivery tip can also have graduated markings for providing visual indicators of the relative depth of the delivery tip in the bladder wall and the alignment of the formed jets with the particular layers of the bladder wall.
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Citations
23 Claims
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1. A method of delivering drugs into a bladder wall, comprising:
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advancing a needleless delivery tip on a catheter into proximity with a bladder wall; illuminating the bladder wall with a light projection system having a wavelength corresponding to diseased tissue; identifying the diseased tissue with a micro-camera; and delivering a treatment drug to the diseased tissue through an orifice in the needleless delivery tip. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of delivering drugs into a bladder wall, comprising:
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advancing a needleless delivery tip on a catheter into proximity with a bladder wall; pushing the needleless delivery tip against the bladder wall such that the bladder wall deforms about the needleless delivery tip; aligning a selected one of a plurality of graduated markers on the needleless delivery tip with the deformed bladder wall, wherein each of the plurality of graduated markers corresponds to a predetermined depth of the orifice with respect to the bladder wall; and delivering a treatment drug into the bladder wall through an orifice in the needleless delivery tip. - View Dependent Claims (8, 9, 10, 11)
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12. A bladder treatment delivery system, comprising:
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a delivery catheter having a needleless delivery tip, the needleless delivery tip including a delivery orifice, a light projection system and a micro camera, the light projection system adapted to provide a selected light wavelength, where said light wavelength corresponds to a type of diseased tissue on a bladder wall and said micro camera is adapted to image the light wavelength and identify the diseased tissue such that said delivery orifice can be positioned proximate the diseased tissue; and a control system for pressurizing a treatment fluid such that said treatment fluid flows through the delivery catheter and into the diseased tissue through the delivery orifice. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A bladder treatment delivery system, comprising:
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a delivery catheter having a needleless delivery tip including a delivery orifice, the needleless delivery tip including a plurality of graduated markers, each graduated marker corresponding to a predetermined depth of the delivery orifice with respect to a bladder wall; and a control system for pressurizing a treatment fluid such that said treatment fluid flows through the delivery catheter and is injected to diseased tissue on the bladder wall. - View Dependent Claims (19, 20, 21, 22, 23)
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Specification