摘要:
A cardiac-valve prosthesis is adapted for percutaneous implantation. The prosthesis includes an armature adapted for deployment in a radially expanded implantation position, the armature including a support portion and an anchor portion, which are substantially axially coextensive with respect to one another. A set of leaflets is coupled to the support portion. The leaflets can be deployed with the armature in the implantation position. The leaflets define, in the implantation position, a flow duct that is selectably obstructable. The anchor portion can be deployed to enable anchorage of the cardiac-valve prosthesis at an implantation site.
摘要:
Medical electrical leads equipped with spacer elements and configured for use during medical procedures such as magnetic resonance imaging (MRI) are disclosed. An illustrative medical electrical lead includes a proximal connector, an insulated lead body including at least one electrode, a helically coiled conductor wire, and a helically coiled spacer element interstitially disposed between adjacent turns of the conductor wire.
摘要:
An opthalmoscope for examining a patient's eye includes an illumination device for generating an illumination beam Illumination imaging optics image the illumination beam onto the eye and a scanning device scans the illumination beam over the eye. The opthalmoscope also includes an observation device and observation imaging optics for imaging an observation beam generated by reflection of the illumination beam from the eye onto the observation device. An electronic shutter excludes stray light from the observation beam. The observation device comprises an electronic sensor with an array of photosensitive pixels that can respectively be activated and/or read out in rows, and the scanning device includes an electronic drive circuit for reading out at least one pixel row of the sensor.
摘要:
A medical device includes a pulse generator and an electrode configured to contact tissue in a body vessel. The medical device includes a lead that includes a lead connector. The lead connector connects a pulse generator with an electrode via a conductive path. An electrode switch is electrically connected between the lead conductor and the electrode. The electrode switch includes an open state preventing the conductive path between the lead and the electrode. The electrode switch includes a closed state establishing the conductive path between the lead and the electrode when a voltage is applied across the electrode switch that exceeds a threshold voltage. The electrode switch in the open state electrically shields the electrode from electromagnetic radiation and induced voltages during magnetic resonance imaging.
摘要:
According to embodiments of the present invention, a pellet stove includes a firepot assembly with a bottom plate slideable along rails to move between a closed position during combustion in the firepot and an open position during ash removal. According to other embodiments, a firebox or combustion enclosure includes a plurality of airfoils formed on the inner and outer surfaces of the enclosure to facilitate heat exchange between exhaust gases flowing across the inner surface of the enclosure and air blown across the outer surface of the enclosure. According to some embodiments, the airfoils and enclosure are of integral unibody construction. According to yet other embodiments, a user sets parameters via a wall control unit, and a stove control unit receives the parameters and automatically controls fuel feed rate, ignition, convection blower, combustion blower, and/or firepot cleaning based on the one or more parameters.
摘要:
The instant invention provides a method of treating an animal suffering a disease characterized by excessive apoptosis by administering a therapeutically effective amount of at least one serine protease inhibitor and thereafter monitoring a decrease in apoptosis. The inhibitor of the invention includes α1-antitrypsin or an α1-antitrypsin-like agent, including, but not limited to oxidation-resistant variants of α1-antitrypsin, and peptoids with antitrypsin activity. The diseases treatable by the invention include cancer, autoimmune disease, sepsis neurodegenerative disease, myocardial infarction, stroke, ischemia-reperfusion injury, toxin induced liver injury and AIDS. The method of the invention is also suitable for the prevention or amelioration of diseases characterized by excessive apoptosis.
摘要:
A chair arm adjustment device according to embodiments of the present invention includes an arm pad base slidably coupled to the arm support, the arm pad base sliding substantially horizontally in two degrees of freedom with respect to the arm support within a range of motion of the arm pad base with respect to the arm support, and an arm brake assembly coupled with the arm pad base, the arm brake assembly moveable between a locked position in which the arm brake assembly substantially inhibits movement of the arm pad base relative to the arm support and an unlocked position in which the arm brake assembly does not substantially inhibit movement of the arm pad base relative to the arm support, wherein the arm brake assembly moves from the unlocked position to the locked position at any position of the arm pad base within the range of motion.
摘要:
An implantable lead comprises a lead body extending from a lead proximal end portion to a lead distal end portion. The lead body includes one or more longitudinally extending lumens. A conductor is received in, and extends along, a lumen. In varying examples, the implantable lead further comprises a tubular electrode co-axial with, and overlying portions of, the lead body. In one example, a lumen wall is sized and shaped to urge an electrically conductive interposer coupled with the conductor toward an inner surface of the electrode. In another example, a ring member is disposed within a lumen and the conductor is drawn and coupled thereto. In yet another example, an electrically conductive connector couples a first and a second conductor via grooves or threads. In a further example, an axial support member couples a distal end electrode and the lead body. Methods associated with the foregoing are also discussed.
摘要:
A medical electrical lead adapted to be at least partially implanted in a cardiac vessel includes a fixation feature operable to change from an undeployed configuration to a deployed configuration in which the fixation feature is adapted to engage an inner surface of the cardiac vessel. A tendon is disposed within a lumen of the lead and is operatively connected to the fixation feature and adapted to cause the fixation feature to change from the undeployed configuration to the deployed configuration for acute and/or chronic fixation of the lead. In one embodiment, the fixation feature includes a deflectable region of the lead which in the deployed configuration causes a surface of the lead body to engage the inner surface of the cardiac vessel. In another embodiment, the fixation feature includes a radially expandable structure for engaging the inner surface of the vessel in the deployed configuration.
摘要:
Apparatus for adjusting the static attitude of a head suspension having a gimbal with at least one gimbal arm. One embodiment of the invention includes a pair of first contacting members contacting a first side of the gimbal arm at a pair of spaced apart locations, and a second contacting member contacting a second side of the gimbal arm at an intermediate location between the spaced apart locations. The first and second contacting members move together relative to each other, plastically deforming the gimbal arm by the relative movement between the second and first contacting members while the spaced apart location between the first contacting members is maintained during the plastic deformation such that at least one of a pitch and roll parameter of the gimbal is adjusted to a desired amount.