Methods for injecting a drug into prostate tissue
First Claim
1. A method comprising:
- positioning a housing adjacent an injection site, the housing comprising a link assembly, a pusher, and a needle, wherein a first link arm of the link assembly is pivotally connected to the housing and a single pivot on the needle, and a second link arm of the link assembly is pivotally connected to the pusher and the single pivot on the needle, such that the first and second link arms are pivotally connected to each other at the single pivot point, and the needle is extendable between (i) a retracted position at which a distal end of the needle is located within the housing, and (ii) an extended position at which the distal end of the needle is located outside the housing;
moving the pusher longitudinally in the housing to raise the needle into the extended position by pivoting the second link arm about the single pivot point until the distal end of the needle penetrates the injection site; and
injecting a substance into the injection site through a lumen of the needle.
6 Assignments
0 Petitions
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.
52 Citations
19 Claims
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1. A method comprising:
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positioning a housing adjacent an injection site, the housing comprising a link assembly, a pusher, and a needle, wherein a first link arm of the link assembly is pivotally connected to the housing and a single pivot on the needle, and a second link arm of the link assembly is pivotally connected to the pusher and the single pivot on the needle, such that the first and second link arms are pivotally connected to each other at the single pivot point, and the needle is extendable between (i) a retracted position at which a distal end of the needle is located within the housing, and (ii) an extended position at which the distal end of the needle is located outside the housing; moving the pusher longitudinally in the housing to raise the needle into the extended position by pivoting the second link arm about the single pivot point until the distal end of the needle penetrates the injection site; and injecting a substance into the injection site through a lumen of the needle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of operating a surgical instrument having a housing including a link assembly, a pusher, and a needle including a lumen, wherein the link assembly includes a first link arm and a second link arm, the first link arm being pivotally connected to the housing and a single pivot on the needle, and the second link arm being pivotally connected to the pusher and the single pivot on the needle, such that the first and second link arms are pivotally connected to each other at the single pivot point, the method comprising:
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positioning the housing adjacent an injection site; moving the pusher longitudinally in the housing to raise the needle by pivoting the second link arm about the single pivot point until a distal end of the needle extends generally transversely from;
(i) a retracted position inside the housing at which the distal end of needle does not contact the injection site, to (ii) an extended position outside the housing at which the distal end of the need penetrates the injection site; andmoving a substance into the injection site through the lumen of the needle. - View Dependent Claims (13, 14, 15)
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16. A surgical instrument, the instrument comprising:
a housing comprising a pusher, a needle including a lumen for injecting a substance into an injection site, and a link assembly including a first link arm and a second link arm, the first link arm being pivotally connected to the housing and a single pivot point on the needle, and the second link arm being pivotally connected to the pusher and the single pivot, such that the first and second link arms are pivotally connected to each other at the single pivot point, wherein moving the pusher longitudinally in the housing raises the needle by pivoting the second link arm about the single pivot point until a distal end of the needle extends generally transversely from (i) a retracted position inside the housing to (ii) an extended position outside the housing. - View Dependent Claims (17, 18, 19)
Specification