摘要:
An ablation device is described comprising an introducer and an electrode array. The electrode array couples to a distal end of the introducer. The electrode array includes a center member having a distal end configured to penetrate tissue and a plurality of electrodes. Proximal and distal ends of each electrode are relatively fixed. The electrodes are dynamically configurable from a retracted state to a deployed state in which the electrodes form a relatively spherical shape in a tissue volume.
摘要:
A Curie point heater primarily for use in a soldering iron and initially designed to operate with currents in the megahertz range is restructured to operate in the kilohertz range. Further in one embodiment of the heater, the coil exciting the heater is mounted in the handle of the iron.
摘要:
Energy delivery systems and methods are provided for use in biological tissue. The energy delivery system includes an energy source and an electrode array. The electrode array includes bipolar electrodes positioned so a first spacing between a pair of adjacent electrodes is different relative to a second spacing between at least one other pair of adjacent electrodes. The electrode array and the energy source are coupled and configured to generate uniform energy density in target tissue according to impedance of the target tissue.
摘要:
A detachable light for use in combination with surgical and diagnostic devices. The detachable light incorporates multiple functions into a minimum number of elements in the housing of the detachable light. The housing includes aligning gripping elements which align the light to a functional centerline of the surgical or diagnostic device. The housing includes multiple light sources on its exterior surface, where the direction of light output may be adjusted. Exterior surfaces of the detachable light which are in contact with patient tissue are formed from an atraumatic material.
摘要:
A method of braking a hydrostatic drive machine includes steps of reducing a displacement of a pump of a hydrostatic drive system to a non-zero displacement, and increasing a displacement of a motor of the hydrostatic drive system to a displacement that is less than a maximum displacement. The method also includes a step of accelerating an engine of the hydrostatic drive system toward a desired engine speed range.
摘要:
A machine (100) includes a frame (102) portion and a tandem wheel arrangement, which includes a main linkage (312) and a stabilizing linkage (322) that are pivotally connected to the frame (102) portion. A first mount (304) and a second mount (304) are pivotally connected to the main linkage (312) and to the stabilizing linkage (322), such that the main linkage (312), the stabilizing linkage (322), the first mount (304), and the second mount (304) define a four-bar-linkage arrangement (202) that operates to transfer unbalanced torque loads from the first mount (304) and the second mount (304) to the frame (102) portion.
摘要:
A machine (100) includes a frame that is pivotally connected to a tandem drive arrangement. The tandem drive arrangement includes a beam (120) and a first motor (128) having a first stator portion (202) connected to a first end of the beam (120). The first motor (128) also includes a first rotor portion (204) connected to a first drive wheel (118). A load sharing arrangement (412) is associated with the tandem drive arrangement and includes a first collar (414) rotatably disposed around the first stator portion (202) and a second collar (426) rotatably disposed around a portion of the beam (120). A first linkage (424) is pivotally connected between the first and second collars such that the load sharing arrangement (412) balances unbalanced loading in the tandem drive arrangement by transferring the unbalanced loading to the frame.
摘要:
A machine (100) includes a frame that is pivotally connected to a tandem drive arrangement. The tandem drive arrangement includes a beam (120) and a first motor (128) having a first stator portion (202) connected to a first end of the beam (120). The first motor (128) also includes a first rotor portion (204) connected to a first drive wheel (118). A load sharing arrangement (412) is associated with the tandem drive arrangement and includes a first collar (414) rotatably disposed around the first stator portion (202) and a second collar (426) rotatably disposed around a portion of the beam (120). A first linkage (424) is pivotally connected between the first and second collars such that the load sharing arrangement (412) balances unbalanced loading in the tandem drive arrangement by transferring the unbalanced loading to the frame.
摘要:
A tissue surface reatment apparatus includes a housing having a proximal end, a distal end including a tissue contacting surface, an interior defined by the housing and a handpiece coupled to the housing. The contactine surface has a plurality of apertures. An energy delivery device including an electrode is positionable in the housing interior. The electrode includes a tissue penetrating distal end in substantial alignment with an aperture. The electrode is configured to be advanced from the housing interior through the aperture and into a target tissue site to define an ablation volume at least partly bounded by a tissue surface. An advancement device is coupled to the energy deliveru device and is at least partly positionable within at least one of the housing or the handpiece. The advancement device is configured to advance the electrode fdro the housing interior into the target tissuesite and withdrawal the electrode into the housing interior. A cable is coupled to the housing or the energy delivery device and is configured to be coupled to an energy source.
摘要:
A power train arrangement having a prime mover and a transmission coupled to the prime mover for driving a cooling system with the prime mover through the transmission. The transmission is positioned intermediate to the prime mover and the cooling system in a manner to optimize the mechanical and functional operation of the work machine.