SELECTIVELY LOADABLE/SEALABLE BIORESORBABLE CARRIER ASSEMBLY FOR RADIOISOTOPE SEEDS

• US 20080207982A1
• Filed: 02/21/2008
• Published: 08/28/2008
• Est. Priority Date: 05/25/2004
• Status: Active Grant

• Current Assignee: Core Oncology, Inc.
• Original Assignee: Core Oncology, Inc.
• Inventors: Hoedeman, George M., Berkey, John J., Elliott, Daniel M.
• Granted Patent: US 8,298,129 B2
• Time in Patent Office: Days
• US Class Current: 600/7
• CPC Class Codes: A61N 2005/1009 Apparatus for loading seeds into magazines or needles
• CPC Class Codes: A61N 2005/1023 Means for creating a row of seeds, e.g. spacers
• CPC Class Codes: A61N 5/1007 Arrangements or means for the introduction of sources into the body

Abstract

A selectively loadable/sealable bioresorbable carrier assembly for retaining and positioning elements used in brachytherapy procedures comprises a bioresorbable tube having a closed distal end and a proximal open end. The bioresorbable tube is loaded with a selectable arrangement of elements, including at least one radioactive seed, through the proximal open end. After the bioresorbable tube is selectably loaded, the bioresorbable tube is heat sealed at a sealing position adjacent a proximalmost element. Once sealed, the bioresorbable tube maintains the arrangement of elements throughout the treatment duration.

Claims

1. A carrier assembly for use in a brachytherapy treatment plan comprising:

a bioresorbable tube having a closed distal end, an open proximal end and a bioresorbable tube lumen therebetween, and

a loading tube, the loading tube having an open insertion end and an open ejection end with a loading tube lumen therebetween;

wherein the loading tube lumen accommodates the bioresorbable tube such that the bioresorbable tube and the loading tube are in coaxially positioned about a common axis such that the closed distal end is adjacent the open ejection end, and

wherein the open insertion end connects to an automated loader.

2. The carrier assembly of claim 1, wherein the loading tube lumen has an internal tapered surface such that an inside diameter is at a maximum value at the open insertion end.

3. The carrier assembly of claim 2, wherein the open proximal end has an external flare wherein the external flare engages the internal tapered surface such that the bioresorbable tube is retained within the loading tube.

4. The carrier assembly of claim 3, wherein the bioresorbable tube has an exterior application of bone wax, the bone wax adhesively retaining the bioresorbable tube within the loading tube.

5. The carrier assembly of claim 1, wherein the open insertion end is configured as a Luer lock fitting.

6. The carrier assembly of claim 1, further comprising:

a carrier stylet having a handle and a rod; and

a protective tube with a first open end, a second open end and a protective lumen therebetween;

wherein the protective lumen has a protective lumen inside diameter dimensioned to accommodate the loading tube such that the protective tube, the loading tube and the bioresorbable tube are coaxially positioned with the common axis.

7. The carrier assembly of claim 6, wherein the rod is insertable between the protective tube and the loading tube to define an integrated shipping configuration.