Devices and methods for delivering agents to tissue region while preventing leakage
First Claim
1. An apparatus for delivering a medical substance to a target site within a body, comprising:
- an outer tubular body having a distal end and a first lumen;
an inner tubular body having a distal end and a second lumen, wherein the inner tubular body is slidably disposed within the first lumen, such that the distal end of the inner tubular body can extend beyond the distal end of the outer tubular body;
a substance delivery port located on the distal end of the inner tubular body in fluid communication with the second lumen; and
a first electrode secured to the distal end of the outer tubular body.
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Accused Products
Abstract
An apparatus for delivering a therapeutic or diagnostic agent to a target site within a body includes an outer tubular body, an inner tubular body slidably disposed within the outer tubular body, a substance delivery port located on the inner tubular body, and an electrode secured to the outer tubular body. The delivery port can be used to deliver a medical substance to the target site, and the electrode can be used to seal an access channel leading to the treatment site, thereby substantially preventing migration of material from the delivery site. In order to minimize the profile of the apparatus, a braided conductor can extend through the wall of the outer tubular body, thereby providing a means for delivering electrical energy to the electrode, while strengthening the wall of the outer tubular body to minimize the risk of rupture during delivery of the substance.
104 Citations
24 Claims
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1. An apparatus for delivering a medical substance to a target site within a body, comprising:
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an outer tubular body having a distal end and a first lumen;
an inner tubular body having a distal end and a second lumen, wherein the inner tubular body is slidably disposed within the first lumen, such that the distal end of the inner tubular body can extend beyond the distal end of the outer tubular body;
a substance delivery port located on the distal end of the inner tubular body in fluid communication with the second lumen; and
a first electrode secured to the distal end of the outer tubular body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for delivering a medical substance to a target site within a body, comprising:
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advancing a tubular body through a channel to the target site;
delivering the substance via the tubular body to the target site; and
delivering ablation energy to seal the channel adjacent to the target site, whereby material is prevented from substantially migrating from the target site. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A medical probe, comprising:
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a probe shaft having a distal end, a tubular wall, and a lumen;
a first electrode secured to the distal end of the probe shaft;
a braided conductor extending through the wall of the probe shaft in electrical communication with the first electrode; and
a substance delivery port at the distal end of the probe shaft in fluid communication with the lumen. - View Dependent Claims (21, 22, 23, 24)
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Specification