摘要:
Implantable medical leads and methods of forming such leads are disclosed. An implantable medical lead includes a lead body, a swage base coupled to the lead body, and a polymeric member interposed at least in part between the swage base and at least one rigid component of the lead such as an electrode or annular ring. The swage base includes an annular-shaped body including a flange having a number of protrusions that extend radially outward from the flange. During a swaging process, the protrusions on the flange are compressed against the polymeric member, forming a number of channels in the member that mechanically bond the member to the swage base.
摘要:
Implantable medical leads and methods of forming such leads are disclosed. An implantable medical lead includes a lead body, a swage base coupled to the lead body, and a polymeric member interposed at least in part between the swage base and at least one rigid component of the lead such as an electrode or annular ring. The swage base includes an annular-shaped body including a flange having a number of protrusions that extend radially outward from the flange. During a swaging process, the protrusions on the flange are compressed against the polymeric member, forming a number of channels in the member that mechanically bond the member to the swage base.
摘要:
An implantable lead may include a housing and a laminate distal seal disposed across a distal end of the housing. A coupler and a fixation helix secured to the coupler may be disposed within the housing. The fixation helix may have a retracted position in which the fixation helix does not penetrate the laminate distal seal and an extended position in which the fixation helix has pierced the laminate distal seal and extends therethrough.
摘要:
An implantable lead may include a housing and a laminate distal seal disposed across a distal end of the housing. A coupler and a fixation helix secured to the coupler may be disposed within the housing. The fixation helix may have a retracted position in which the fixation helix does not penetrate the laminate distal seal and an extended position in which the fixation helix has pierced the laminate distal seal and extends therethrough.
摘要:
An implantable lead may have a distal assembly including a coupler, a fixation helix secured to the coupler and a housing in which the fixation helix and the coupler are disposed. The distal assembly may include an annular seal that is disposed between the coupler and the housing and that provides an at least substantially fluid-tight seal between the coupler and the housing.
摘要:
An implantable lead may have a distal assembly including a coupler, a fixation helix secured to the coupler and a housing in which the fixation helix and the coupler are disposed. The distal assembly may include an annular seal that is disposed between the coupler and the housing and that provides an at least substantially fluid-tight seal between the coupler and the housing.
摘要:
A conductor assembly for a medical device lead includes a helically coiled conductor including a plurality of turns having a coil pitch and an outer diameter and consisting of one filar having a filar diameter. The coil pitch and outer diameter are selected based on the filar diameter to minimize heating of the helically coiled conductor in the presence of an MRI field. A polymer sheath is formed about the helically coiled conductor such that the coil pitch of the unifilar helically coiled conductor is maintained. The polymer sheath is configured to increase a torque transmitting capacity of the helically coiled conductor.
摘要:
A medical device lead includes an electrode, a helically coiled conductor electrically coupled to the electrode, and a polymer sheath formed over the helically coiled conductor. The helically coiled conductor includes a plurality of turns helically wound around a longitudinal axis of the conductor, and consists of one filar.
摘要:
A medical device lead includes an electrode, a helically coiled conductor electrically coupled to the electrode, and a polymer sheath formed over the helically coiled conductor. The helically coiled conductor includes a plurality of turns helically wound around a longitudinal axis of the conductor, and consists of one filar.
摘要:
A conductor assembly for a medical device lead includes a helically coiled conductor including a plurality of turns having a coil pitch and an outer diameter and consisting of one filar having a filar diameter. The coil pitch and outer diameter are selected based on the filar diameter to minimize heating of the helically coiled conductor in the presence of an MRI field. A polymer sheath is formed about the helically coiled conductor such that the coil pitch of the unifilar helically coiled conductor is maintained. The polymer sheath is configured to increase a torque transmitting capacity of the helically coiled conductor.