CA2427837A1 - Radioactive member for use in brachytherapy and method of making - Google Patents

Radioactive member for use in brachytherapy and method of making Download PDF

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Publication number
CA2427837A1
CA2427837A1 CA002427837A CA2427837A CA2427837A1 CA 2427837 A1 CA2427837 A1 CA 2427837A1 CA 002427837 A CA002427837 A CA 002427837A CA 2427837 A CA2427837 A CA 2427837A CA 2427837 A1 CA2427837 A1 CA 2427837A1
Authority
CA
Canada
Prior art keywords
radioactive
bioabsorbable carrier
elongate
mold
poly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002427837A
Other languages
French (fr)
Other versions
CA2427837C (en
Inventor
Michael A. Rapach
Kevin M. Helle
Charles E. Shanks
Jay C. Reed
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Medi Physics Inc
Original Assignee
Medi-Physics, Inc.
Michael A. Rapach
Kevin M. Helle
Charles E. Shanks
Jay C. Reed
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Medi-Physics, Inc., Michael A. Rapach, Kevin M. Helle, Charles E. Shanks, Jay C. Reed filed Critical Medi-Physics, Inc.
Publication of CA2427837A1 publication Critical patent/CA2427837A1/en
Application granted granted Critical
Publication of CA2427837C publication Critical patent/CA2427837C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00Radiation therapy
    • A61N5/10X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N5/1001X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
    • A61N5/1027Interstitial radiation therapy
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A61P31/04Antibacterial agents
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00Radiation therapy
    • A61N5/10X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N5/1001X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
    • A61N2005/1019Sources therefor
    • A61N2005/1023Means for creating a row of seeds, e.g. spacers

Abstract

A radioactive member for use in brachytherapy comprising a molded elongate, bioabsorbable carrier material with spaced radioactive sources disposed therein, and methods for the manufacture thereof. The radioactive members may be used in treatment of, for example, prostate cancer.

Claims (24)

1. ~A radioactive member for use in brachytherapy comprising an elongate bioabsorbable carrier molded about spaced radioactive sources disposed therein.
2. ~A radioactive member as claimed in claim 1 wherein said elongate bioabsorbable carrier is essentially rigid.
3. ~A radioactive member as claimed in claim 2 wherein said elongate bioabsorbable carrier is formed from a material selected from the group consisting of poly(-L-lactic acid), poly(glycolic acid), polyester amides of glycolic acids, polyester amides of lactic acids, and combinations thereof.
4. ~A radioactive member as claimed in claim 3 wherein said elongate bioabsorbable carrier comprises a combination of PLLA (Poly (L-lactide)) and PGA (Poly (glycolide)) having 10 parts PLLA/90 parts PGA w/w.
5. ~A radioactive member as claimed in claim 4 wherein said elongate bioabsorbable carrier forms regions containing radioactive sources and regions devoid of radioactive sources.
6. ~A radioactive member as claimed in claim 5, wherein said regions of said elongate bioabsorbable carrier containing radioactive sources are wider than said regions devoid of radioactive sources.
7. ~A radioactive member as claimed in claim 1, wherein said elongate bioabsorbable carrier is echogenic.
8.~A radioactive member as claimed in claim 1, wherein said radioactive sources are radioactive seeds.
9. ~A radioactive member as claimed in claim 1, wherein said elongate bioabsorbable carrier comprises a porous structure.
10. ~A radioactive member for use in brachytherapy comprising an elongate bioabsorbable carrier with spaced radioactive sources disposed therein, wherein said elongate bioabsorbable carrier is of a substantially solid composition.
11. ~A radioactive member as claimed in claim 10, wherein said elongate bioabsorbable carrier is essentially rigid.
12. ~A radioactive member as claimed in claim 11, wherein said elongate bioabsorbable carrier is formed from a material selected from the group consisting of poly(-L-lactic acid), poly(glycolic acid), polyester amides of glycolic acids, polyester amides of lactic acids, and combinations thereof.
13. ~A radioactive member as claimed in claim 12, wherein said elongate bioabsorbable carrier comprises a combination of PLLA (Poly (L-lactide)) and PGA (Poly (glycolide)) having 10 parts PLLA/90 parts PGA w/w.
14. ~A radioactive member as claimed in claim 13, wherein said elongate bioabsorbable carrier forms regions containing radioactive sources and regions devoid of radioactive sources.
15. ~A radioactive member as claimed in claim 14, wherein said regions of said elongate bioabsorbable carrier containing radioactive sources are wider than said regions devoid of radioactive sources.
16. ~A radioactive member as claimed in claim 10, wherein said elongate bioabsorbable carrier is echogenic.
17. ~A method for making a radioactive member comprising the steps of:
a) providing a mold;
b) introducing a plurality of radioactive sources into the mold;
c) introducing liquid bioabsorbable carrier material into the mold;

d) setting the liquid bioabsorbable carrier material; and e) removing the set product from the mold.
18. ~A method as claimed in claim 17, wherein said introducing step further comprises injecting said material into said mold.
19. A method as claimed in claim 18, wherein the mold has a number of small pins protruding towards its centre position so as to hold radioactive sources at predetermined positions in the mold prior to the introduction of the liquid bioabsorbable carrier material.
20. A method as claimed in claim 17, further comprising the step of introducing a blowing agent into said carrier material.
21. A method as claimed in claim 17, further comprising the step of venting entrapped air from said mold during said step of introducing liquid bioabsorbable carrier material into the mold.
22. A method as claimed in claim 17, wherein said setting step further comprising~
forming gas bubbles in said carrier material so as to form a porous structure to the set carrier material.
23. A method of treatment of a condition which is responsive to radiation therapy which comprises the step of placing a radioactive member as claimed in claim 1 adjacent a site to be treated within a patient for a sufficient period of time to deliver a therapeutically effective dose.
24. A method as claimed in claim 23 wherein the condition is cancer.
CA2427837A 2000-11-01 2001-11-01 Radioactive member for use in brachytherapy and method of making Expired - Fee Related CA2427837C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US24504600P 2000-11-01 2000-11-01
US60/245,046 2000-11-01
PCT/US2001/049879 WO2002036199A2 (en) 2000-11-01 2001-11-01 Radioactive member for use in brachytherapy and method of making

Publications (2)

Publication Number Publication Date
CA2427837A1 true CA2427837A1 (en) 2002-05-10
CA2427837C CA2427837C (en) 2010-07-13

Family

ID=22925077

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2427837A Expired - Fee Related CA2427837C (en) 2000-11-01 2001-11-01 Radioactive member for use in brachytherapy and method of making

Country Status (18)

Country Link
US (3) US6905455B2 (en)
EP (1) EP1330292B1 (en)
AT (1) ATE305809T1 (en)
AU (5) AU3122702A (en)
BR (1) BR0115087B1 (en)
CA (1) CA2427837C (en)
CZ (1) CZ20031217A3 (en)
DE (1) DE60113871T2 (en)
DK (1) DK1330292T3 (en)
ES (1) ES2253446T3 (en)
IL (1) IL155382A0 (en)
MX (1) MXPA03003852A (en)
NO (1) NO20031803L (en)
NZ (2) NZ525361A (en)
PL (1) PL203978B1 (en)
RU (1) RU2277953C2 (en)
WO (1) WO2002036199A2 (en)
ZA (1) ZA200303372B (en)

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Also Published As

Publication number Publication date
AU2002231227B2 (en) 2007-06-07
CZ20031217A3 (en) 2004-04-14
WO2002036199A2 (en) 2002-05-10
EP1330292A2 (en) 2003-07-30
ES2253446T3 (en) 2006-06-01
US8033981B2 (en) 2011-10-11
MXPA03003852A (en) 2004-10-15
PL366252A1 (en) 2005-01-24
NO20031803D0 (en) 2003-04-23
DE60113871D1 (en) 2005-11-10
AU2009227914B2 (en) 2011-08-25
PL203978B1 (en) 2009-11-30
NZ543165A (en) 2007-06-29
NO20031803L (en) 2003-06-30
BR0115087B1 (en) 2011-12-27
ZA200303372B (en) 2004-07-30
EP1330292B1 (en) 2005-10-05
WO2002036199A9 (en) 2003-08-14
RU2277953C2 (en) 2006-06-20
AU2007202344A1 (en) 2007-06-14
DK1330292T3 (en) 2006-02-13
WO2002036199A3 (en) 2002-08-29
AU2007216652B2 (en) 2009-11-12
CA2427837C (en) 2010-07-13
DE60113871T2 (en) 2006-07-27
US7547274B2 (en) 2009-06-16
US6905455B2 (en) 2005-06-14
AU3122702A (en) 2002-05-15
BR0115087A (en) 2003-09-16
US20090253950A1 (en) 2009-10-08
IL155382A0 (en) 2003-11-23
ATE305809T1 (en) 2005-10-15
US20060058570A1 (en) 2006-03-16
US20040015037A1 (en) 2004-01-22
AU2009227914A1 (en) 2009-11-12
AU2007216652A1 (en) 2007-09-27
NZ525361A (en) 2005-12-23

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