Brachytherapy apparatus for asymmetrical body cavities

• US 8,226,539 B2
• Filed: 09/04/2009
• Issued: 07/24/2012
• Est. Priority Date: 12/16/2005
• Status: Expired due to Fees

• Current Assignee: Portola Medical, Inc. (Huiheng Medical, Inc.)
• Original Assignee: Portola Medical, Inc. (Huiheng Medical, Inc.)
• Inventors: Cutrer, L. Michael, Terwilliger, Richard A., Winch, Fredrick W., Zhang, John, Higgins, Wayne, Ellard, Terence, Bossi, David
• Primary Examiner(s): Gilbert, Samuel
• Application Number:
  US12/554,732
• Publication Number:
  US 20090326314A1
• Time in Patent Office: 1,054 Days
• Field of Search: 600 1- 8
• US Class Current: 600/3
• CPC Class Codes: A61N 2005/1018 with multiple channels for guiding radioactive sources
• CPC Class Codes: A61N 5/1015 Treatment of resected cavities created by surgery, e.g. lumpectomy

Abstract

The present disclosure provides a brachytherapy apparatus, system and method that delivers partial breast irradiation treatment for post-lumpectomy patients via introduction of a catheter-like device through a trocar. The apparatus may be introduced post-surgically with local anesthesia under image guidance into the previous excision site and into a cavity by a surgeon. The brachytherapy apparatus includes one or more thin-walled tubes, each of said thin-walled tubes being configured to contain one or more radioactive sources, at least one radiation source configured to deliver a prescribed dose of radiation, a whisk adjuster configured to permit adjustment of each of the one or more thin-walled tubes so that the tubes substantially conform to a size of the body cavity; and an expansion element configured to expand outwardly said one or more thin-walled tubes within the cavity so that the thin-walled tubes substantially conform to a shape and/or size of the body cavity.

Claims

1. A brachytherapy system for delivery of localized irradiation to tissue near a cavity that lies beneath a surface of a body comprising:

a brachytherapy device that comprises a plurality of cavity tubes configured to be inserted within the cavity and to controllably move from a collapsed state to an expanded state while within the cavity, each cavity tube having a lumen configured to house at least one radioactive source, and a center core having a lumen for supporting the plurality of cavity tubes; and

an adapter configured to be removably mounted to the brachytherapy device and to facilitate the connection of an afterloader machine to each of the cavity tubes and the center core so as to permit the afterloader machine to insert at least one radiation source into the lumens of each of the cavity tubes and the center core, and to permit the afterloader machine to control the movement of the at least one radiation source within the lumens of each of the cavity tubes and the center core, the adapter having a plurality of adapter tubes, each adapter tube being corresponding to one of the plurality of cavity tubes, and an opening at a distal end of each adapter tube.

2. The brachytherapy system of claim 1 wherein the adapter comprises an adapter tube corresponding to the center core and there is an opening at the distal end of the adapter tube.

3. The brachytherapy system of claim 2 further comprising a cap-like structure to which the end of the adapter tube corresponding to the center core is connected, the cap-like structure having an opening therein that corresponds to the lumen in the adapter tube corresponding to the center core.

4. The brachytherapy system of claim 1, wherein the plurality of adapter tubes are flexible.

5. The brachytherapy system of claim 1, further comprising a cap-like structure to which one end of each of the plurality of adapter tubes is connected, the cap-like structure having openings therein that correspond to each of the lumens in the plurality of adapter tubes.