摘要:
Apparatus is disclosed for applying two-part surgical fasteners during endoscopic or laparoscopic procedures. The apparatus includes a handle assembly, an endoscopic portion which extends from the handle assembly, and a tool assembly pivotally associated with a distal end of the endoscopic portion for applying a two-part surgical fastener. A mechanism is provided for effectuating articulated pivotal movement of the fastener applying tool assembly within an angular sector of rotation to increase the operational range of the instrument.
摘要:
A wafer processing cluster tool, having one or more load-locks, is provided with one or more batch preheating modules that receive wafers only from the cluster tool transport module at the internal vacuum pressure of the machine. The loading, unloading, handling and processing of wafers in the machine can occur while other wafers are being preheated. The preheat module has a vertically moveable rack and is loaded with various sized batches of wafers with no vacant positions between them. Wafer shaped shields may occupy positions adjacent top and bottom wafers to cause them to heat the same as other wafers in the rack. Infrared lamps positioned outside of quartz windows heat wafers in the preheat module. The rack may rotate to improve heating uniformity. Temperature sensors, such as pyrometers, that do not contact the wafers being preheated, measure temperature for control of the heating of the lamps.
摘要:
A surgical instrument is disclosed for use in a wide variety of roles including grasping, dissecting, clamping, or retracting materials or tissue during surgical procedures performed either in open surgery or within the abdominal cavity. The surgical instrument includes a handle portion, a tubular body portion extending from the handle portion and defining a longitudinal axis, and tool structure associated with a distal portion of the tubular body portion. A rotation assembly is provided for effectuating rotation of the tool structure about the longitudinal axis of the body portion. Rotation locking structure is provided to lock the rotation assembly at a predetermined orientation such that it cannot be rotated with respect to the handle.
摘要:
A surgical instrument is disclosed for use in a wide variety of roles including grasping, dissecting, clamping, or retracting materials or tissue during surgical procedures performed either in open surgery or within the abdominal cavity. The surgical instrument includes a handle portion, a tubular body portion extending from the handle portion and defining a longitudinal axis, and tool structure associated with a distal portion of the tubular body portion. A rotation assembly is provided for effectuating rotation of the tool structure about the longitudinal axis of the body portion. Rotation locking structure is provided to lock the rotation assembly at a predetermined orientation such that it cannot be rotated with respect to the handle.
摘要:
A controlled advancement laser ablation device is provided for precise ablation of body matter. The laser ablation device includes a laser energy transmission mechanism such as, e.g., a fiber optic fiber mounted for controlled translational longitudinal movement relative to a housing structure. A laser energy generator is optically connected to the laser energy transmission mechanism. A controlled advancement mechanism is provided in engagement with the laser energy transmission mechanism for advancing the mechanism through the housing structure at a controlled rated coordinated with the laser energy generator output to ablate body tissue. Controlled advancement mechanisms include constant and/or variable rate springs, motors, and other mechanisms which can be coordinated with the laser energy generator to advance the laser energy transmission mechanism as the targeted substance is ablated. The device is particularly suitable for use in transmyocardial revascularization (TMR) and angioplasty procedures.
摘要:
A controlled advancement laser ablation device is provided for precise ablation of body matter. The laser ablation device includes a handle portion having proximal and distal openings and a fiber advancing device having a stationary member and a movable member. The movable member is movable towards and away from the stationary member. A fiber casing is included having proximal and distal ends. The distal end is secured to the proximal end of the handle portion and the proximal end is secured to the stationary member. At least one optical fiber is included having proximal and distal ends. The distal end is extendible through the handle portion and a portion of the fiber, defined between the proximal and distal ends, is secured to the movable member. A laser energy generator is optically connected to the proximal end of the optical fiber. The handle portion includes a self-biasing advancing mechanism. The self-biasing advancing mechanism includes a guide member positioned within at least a portion of a channel extending within the handle portion. At least one biasing member is operatively connected to the guide member to guide the guide member proximally as a proximal force is applied to the distal end of the optical fiber and to guide the guide member distally when laser energy is transmitted to the optical fiber by the laser energy generator. Controlled advancement mechanisms include constant and/or variable rate springs, motors, and other mechanisms which can be coordinated with the laser energy generator to advance the laser energy transmission mechanism as the targeted substance is ablated. The device is suitable for use in transmyocardial revascularization (TMR) and angioplasty procedures.
摘要:
A controlled advancement laser ablation device is provided for precise ablation of body matter. The laser ablation device includes a laser energy transmission mechanism such as, e.g. a fiber optic fiber mounted for controlled translational longitudinal movement relative to a housing structure. A laser energy generator is optically connected to the laser energy transmission mechanism. A controlled advancement mechanism is provided in engagement with the laser energy transmission mechanism for advancing the mechanism through the housing structure at a controlled rated coordinated with the laser energy generator output to ablate body tissue. Controlled advancement mechanisms include constant and/or variable rate springs, motors, and other mechanisms which can be coordinated with the laser energy generator to advance the laser energy transmission mechanism as the targeted substance is ablated. The device is particularly suitable for use in transmyocardial revascularization (TMR) and angioplasty procedures.
摘要:
A method of measuring and controlling the temperature of articles stacked in parallel in a chamber. A pyrometer is positioned outside of a chamber and directed, either directly or with mirrors, through a window in the chamber wall so that only energy from wafers removed from the ends of the stack is received by the pyrometer. The pyrometer is inclined at an angle so that substantially all energy from the opposite side of the stack and reflected through spaces between facing parallel pairs of wafer surfaces will have been reflected a large number of times by the wafers before entering the pyrometer. Thus, regardless of the emissivity or transmissivity of the wafers, the energy incident upon the pyrometer will approach that emitted by a black body of the same temperature as the wafers, and the temperature read by the pyrometer will be independent of the emissivity or transmissivity of the wafers.
摘要:
A wafer processing cluster tool, having one or more load-locks, is provided with one or more batch preheating modules that receive wafers only from the cluster tool transport module at the internal vacuum pressure of the machine. The loading, unloading, handling and processing of wafers in the machine can occur while other wafers are being preheated. The preheat module has a vertically moveable rack and is loaded with various sized batches of wafers with no vacant positions between them. Wafer shaped shields may occupy positions adjacent top and bottom wafers to cause them to heat the same as other wafers in the rack. Infrared lamps positioned outside of quartz windows heat wafers in the preheat module. The rack may rotate to improve heating uniformity. Temperature sensors, such as pyrometers, that do not contact the wafers being preheated, measure temperature for control of the heating of the lamps.