Extendable implantable elongated member
AssigneeMedtronic, Inc.
InventorsTerrell M. Williams, Mark T. Marshall
Life of this patent
Estimating the term…
Abstract
An extendable medical lead comprises a lead body and a sheath defining a cavity that encloses a length of the lead body. The length of the lead body enclosed within the sheath may be coiled or otherwise gathered such that when extended, the length of the enclosed section of the lead body is greater than the length of the sheath. The sheath may include a seal to help prevent contaminant entry into the cavity in order to help reduce tissue in growth around the length of the lead body disposed within the sheath. A portion of the length of the lead body enclosed within the sheath exits the cavity through an aperture defined by the seal when a tensile force is applied to the lead body.
Claims27
An assembly comprising:
- an implantable medical elongated member having a proximal end and a distal end;
- a sheath defining a cavity and comprising a sheath proximal end and a sheath distal end, wherein a length of the elongated member is enclosed within the cavity;
- and
- a seal coupled to at least one of the sheath distal end or the sheath proximal end, the seal defining an aperture through which the elongated member extends, wherein the seal substantially prevents contaminant entry into the cavity of the sheath, and
- wherein a portion of the length of the elongated member enclosed within the sheath exits the cavity through the aperture defined by the seal when a tensile force is applied to the elongated member;
- and
- wherein the elongated member does not exert a restorative force after the portion of the length of the elongated member exits the cavity.
An assembly comprising:
- an implantable medical elongated member having a proximal end and a distal end;
- a sheath defining a cavity and comprising a sheath proximal end and a sheath distal end, wherein a length of the elongated member is enclosed within the cavity;
- and
- a seal coupled to at least one of the sheath distal end or the sheath proximal end, the seal defining an aperture through which the elongated member extends, wherein the seal substantially prevents contaminant entry into the cavity of the sheath, and
- wherein a portion of the length of the elongated member enclosed within the sheath exits the cavity through the aperture defined by the seal when a tensile force is applied to the elongated member;
- and
- wherein the elongated member does not exert a force tending restore the portion of the elongated member to a form it had before exiting the cavity, after the portion of the length of the elongated member exits the cavity.
Dependencies are inferred from the claim text.