Method of injecting a drug and echogenic bubbles into prostate tissue
First Claim
1. A method of injecting a drug into prostate tissue comprisinga. positioning a distal end of an injection head of a surgical instrument adjacent a region of prostate tissue into which it is desired to inject the drug;
- and b. emitting a high pressure stream of the drug from a aperture in the distal end of the surgical instrument using needle-less injection and c. injecting echogenic bubbles along with the drug into the prostate tissue, wherein the injection head has a first inlet connected to a high pressure source of the drug and a second inlet connected to a gas delivery tube.
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Accused Products
Abstract
Method and surgical instrument for treating prostate tissue including a surgical instrument having a main body, a needle deployment port, a needle, first and second handles and a lockout release mechanism to limit needle extension. Additionally, a kit includes the surgical instrument, together with a cystoscope, and optionally a syringe and reservoir of ethanol. The method includes needle-less injection and visualizing the ethanol injection by delivering both an echogenic agent and ethanol either by needle or needle-less injection or by providing an ultrasonically visible marker near the tip of the ethanol delivery cannula. The method also includes extending the needle transversely of the instrument housing using a link assembly.
228 Citations
15 Claims
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1. A method of injecting a drug into prostate tissue comprising
a. positioning a distal end of an injection head of a surgical instrument adjacent a region of prostate tissue into which it is desired to inject the drug; - and
b. emitting a high pressure stream of the drug from a aperture in the distal end of the surgical instrument using needle-less injection and c. injecting echogenic bubbles along with the drug into the prostate tissue, wherein the injection head has a first inlet connected to a high pressure source of the drug and a second inlet connected to a gas delivery tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification