METHODS FOR INJECTING A DRUG INTO PROSTATE TISSUE

• US 20140135733A1
• Filed: 01/17/2014
• Published: 05/15/2014
• Est. Priority Date: 10/12/2001
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Ams Research Corporation (Endo International PLC)
• Inventors: Hauschild, Sidney F., Bolea, Stephen L., Neisz, Johann J.
• Granted Patent: US 9,782,547 B2
• Time in Patent Office: Days
• US Class Current: 604/506
• CPC Class Codes: A61B 17/32037 for removing obstructions from inner organs or blood vessels, e.g. for atherectomy
• CPC Class Codes: A61B 17/3403 Needle locating or guiding means guides for suture needles A61B17/0482; guiding or tracking by nuclear magnetic resonance G01R33/285
• CPC Class Codes: A61B 17/3478 Endoscopic needles, e.g. for infusion biopsy needles A61B10/0233; catheters with injection needles A61M25/0067
• CPC Class Codes: A61B 2017/00274 Prostate operation, e.g. prostatectomy, turp, bhp treatment
• CPC Class Codes: A61B 2017/003 Steerable
• CPC Class Codes: A61B 2017/22082 after introduction of a substance
• CPC Class Codes: A61B 2017/2946 Locking means
• CPC Class Codes: A61B 2018/00547 Prostate
• CPC Class Codes: A61B 2090/035 preventing further rotation
• CPC Class Codes: A61B 2090/0801 Prevention of accidental cutting or pricking
• CPC Class Codes: A61M 5/3007 with specially designed jet passages at the injector's distal end
• CPC Class Codes: A61M 5/3287 Accessories for bringing the needle into the body; Automatic needle insertion A61M5/20, A61M5/31525 take precedence
• CPC Class Codes: A61M 5/486 Indicating injection pressure
• CPC Class Codes: A61M 5/488 Limiting injection pressure

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.

Claims

1. A method of extending a needle from a surgical instrument for injecting a liquid drug into a prostate, the method comprising:

providing a link assembly at a distal end of the surgical instrument with the link assembly connected to a needle and to a housing carrying the needle; and

extending the needle generally transversely to the housing using a pusher moving longitudinally in the housing acting through the link assembly.

2. The method of claim 1 wherein the step of extending the needle further comprises pivoting the link assembly about a pivot connected to the housing.

3. The method of claim 1 wherein the step of extending the needle further comprises pivoting the needle using at least one link arm pivotally connected to the housing.

4. The method of claim 1 wherein the step of extending the needle further comprises moving the needle using a slot moving along a pin connected to the housing.

5. The method of claim 1 wherein the step of extending the needle further comprises guiding the needle through a slot in the housing.