摘要:
In one embodiment a therapeutic member includes a radioactive source and a material (e.g., a bio-absorbable polymeric material) that encapsulates the radioactive source. An outer surface of the encapsulating material includes a plurality of protrusions to reduce a tendency of the member to migrate and rotate within a patient's body after implantation. In an embodiment, the encapsulating material includes an anchor mechanism that extends from at least one of the longitudinal ends of the radioactive source to reduce a tendency of the member to migrate and rotate within a patient's body after implantation. Embodiments of the present invention are also directed to strands that include similar protrusions and/or anchor mechanisms. Additionally, embodiments of the present invention are directed to spacers that resist migration and rotation. Embodiments are also directed to radiopaque markers that resist migration and rotation. This abstract is not intended to be a complete description of the invention.
摘要:
An anchor mechanism includes a sleeve to fit around a structure such as a radioactive source, a thermal ablation implant, a spacer, a strand or a radiopaque marker. The sleeve has a bore that extends an entire longitudinal length of the sleeve, and through which the structure fits, such that the structure can extend out from both longitudinal ends of the sleeve. One or more protrusion extends from an outer surface of the sleeve to engage surrounding patient tissue after implantation of the structure into a patient, to thereby reduce a tendency for the structure to migrate and rotate after implantation.
摘要:
In an embodiment a therapeutic member includes a solitary radioactive seed. The seed includes a metallic housing with radioactive material contained within the metallic housing. The metallic housing has a first longitudinal end and a second longitudinal end and a longitudinal length between the first and second longitudinal ends. A polymeric material is molded to completely and monolithically encapsulate the metallic housing of the solitary radioactive seed. The implantable therapeutic member is adapted to be implanted into patient tissue using a hollow needle. A portion of the molded polymeric material extends from one of the first and second longitudinal ends of the metallic housing to reduce a tendency of the seed to migrate and rotate within a patient's body after implantation of the member. The portion of the molded polymeric material, that extends from one of the first and second longitudinal ends of the metallic housing, causes the implantable therapeutic member to have a longitudinal length that is greater than the longitudinal length of the metallic housing.
摘要:
A therapeutic member for use in brachytherapy deliverable to an implant site by way of a needle comprises a single radioactive source encapsulated by a bio-absorbable material having an outer surface including one or more ribs encircling the single radioactive source, a leading edge endcap rib and a trailing edge endcap rib. The one or more ribs reduces a tendency of the member to migrate and rotate within a patient's body after implantation. The encapsulating material further includes a first rail formed from the bio-absorbable material extending at least from opposite sides of the outer surface of the encapsulating material along the longitudinal axis of the therapeutic member, and a second rail formed from the bio-absorbable material extending at least from opposite sides of the outer surface of the encapsulating material along the longitudinal axis of the therapeutic member, the second rail arranged in a plane substantially perpendicular to a plane in which the first rail is arranged. Another embodiment includes wings that selectively extend from an implant preventing movement of the implant.
摘要:
In an embodiment a therapeutic member includes a single radioactive seed and is adapted to be implanted into patient tissue using a hollow needle. The seed includes a metallic housing with radioactive material contained within the metallic housing. A polymeric bio-adherent and/or bio-adhesive material surrounds at least a portion the housing of the single radioactive seed. The polymeric bio-adherent and/or bio-adhesive material reduces a tendency of the member to migrate and rotate within a patient's body after implantation of the member.
摘要:
A therapeutic strand implant, for use in brachytherapy and deliverable to an implant site by way of a needle, includes a plurality of radioactive sources, and a polymeric material molded to encapsulate the radioactive sources. A space is defined by the polymeric material between each adjacent pair of the radioactive sources. A plurality of protrusions is defined by an outer surface of the encapsulating polymeric material.
摘要:
In one embodiment a therapeutic member includes a radioactive source and a material (e.g., a bio-absorbable polymeric material) that encapsulates the radioactive source. An outer surface of the encapsulating material includes a plurality of protrusions to reduce a tendency of the member to migrate and rotate within a patient's body after implantation. In an embodiment, the encapsulating material includes an anchor mechanism that extends from at least one of the longitudinal ends of the radioactive source to reduce a tendency of the member to migrate and rotate within a patient's body after implantation. Embodiments of the present invention are also directed to strands that include similar protrusions and/or anchor mechanisms. Additionally, embodiments of the present invention are directed to spacers that resist migration and rotation. Embodiments are also directed to radiopaque markers that resist migration and rotation. This abstract is not intended to be a complete description of the invention.
摘要:
A therapeutic member for use in brachytherapy deliverable to an implant site by way of a needle comprises a single radioactive source encapsulated by a bio-absorbable material having an outer surface including one or more ribs encircling the single radioactive source, a leading edge endcap rib and a trailing edge endcap rib. The one or more ribs reduces a tendency of the member to migrate and rotate within a patient's body after implantation. The encapsulating material further includes a first rail formed from the bio-absorbable material extending at least from opposite sides of the outer surface of the encapsulating material along the longitudinal axis of the therapeutic member, and a second rail formed from the bio-absorbable material extending at least from opposite sides of the outer surface of the encapsulating material along the longitudinal axis of the therapeutic member, the second rail arranged in a plane substantially perpendicular to a plane in which the first rail is arranged.
摘要:
A therapeutic member for use in brachytherapy deliverable to an implant site by way of a needle comprises a single radioactive source encapsulated by a bio-absorbable material having an outer surface including one or more ribs encircling the single radioactive source, a leading edge endcap rib and a trailing edge endcap rib. The one or more ribs reduces a tendency of the member to migrate and rotate within a patient's body after implantation. The encapsulating material further includes a first rail formed from the bio-absorbable material extending at least from opposite sides of the outer surface of the encapsulating material along the longitudinal axis of the therapeutic member, and a second rail formed from the bio-absorbable material extending at least from opposite sides of the outer surface of the encapsulating material along the longitudinal axis of the therapeutic member, the second rail arranged in a plane substantially perpendicular to a plane in which the first rail is arranged.
摘要:
An anchor mechanism includes a sleeve to fit around a structure such as a radioactive source, a thermal ablation implant, a spacer, a strand or a radiopaque marker. The sleeve has a bore that extends an entire longitudinal length of the sleeve, and through which the structure fits, such that the structure can extend out from both longitudinal ends of the sleeve. One or more protrusion extends from an outer surface of the sleeve to engage surrounding patient tissue after implantation of the structure into a patient, to thereby reduce a tendency for the structure to migrate and rotate after implantation.