摘要:
An electrical penetrator assembly has a ceramic housing with a through bore, a first electrical conductor extending through a first end of the bore and terminating short of a second end of the bore and having an outer end engageable with a first cable, and a second electrical conductor extending through a second end of the bore and terminating short of the first end of the bore, the second conductor having an outer end engageable with a second cable. The conductors are in electrical communication at their inner ends and at least one of the conductors is movable relative to the other conductor to accommodate expansion and contraction as a result of temperature variations, and first and second seals extend between respective ends of the ceramic housing and the first and second conductor, respectively.
摘要:
Certain embodiments of the present invention provide a ventilator system and method for transferring heat and smoke from within a structure to outside the structure during a fire. The ventilator may include a housing being configured to receive heat and smoke through an intake port and expel heat and smoke through and exhaust port. The housing may have a channel between the intake port and the exhaust port wherein a motor creates airflow from the direction of the intake port to the exhaust port. The ventilator may also include an extension member having a first end and a second end. The first end may be connected to the intake port of the housing and the second end is configured for insertion into the structure.
摘要:
An apparatus for providing uniform axial load distribution for laminate layers of multilayer ceramic chip carriers includes a base plate configured to support a plurality of green sheet layers thereon, the base plate having at least one resiliently mounted load support bar disposed adjacent outer edges of the base plate. The load support bar is mounted on one or more biasing members such that the top surface of the support bar extends above the top surface of the base plate by a selected distance.
摘要:
An edible emulsion is disclosed having a fat content of less than 5 weight %. An edible fat or oil component is dispersed in an aqueous phase with a two-component emulsifier system comprising a primary emulsifier which acts to stabilise the emulsion and a secondary emulsifier which works in synergy with the fat or oil component to impart a desirable texture and structure to the finished product.
摘要:
A device (10) is provided which includes an elongated cannula (20) having a first inner diameter (DI) and an outer diameter (DO) sized for percutaneous introduction into a patient. The cannula (20) defines a working channel (25) between its ends (21, 22) which has a second diameter (D2) equal to the diameter (DI) of the cannula sized for receiving a tool therethrough. An elongated viewing element (50) is engageable to the cannula (20) adjacent the working channel (25), preferably by a fixture (30, 170). The fixture (30, 170) includes a housing/body (31, 171) attachable to the proximal end (22) of the cannula (20). The housing (31) defines an optics bore (60, 180) to support a viewing element (50) for translation and rotation relative to the cannula (20) so that the longitudinal axis of the optics bore (60, 180) will translate parallel to and rotate about the longitudinal axis of the working channel (25). Methods are also provided for performing surgeries percutaneously with direct visualization and without the requirement for a fluid-maintained workspace.
摘要:
A fixture for performing percutaneous surgery under direct visualization and through a single cannula includes a housing/body attachable to the proximal end of the cannula by a ring. The ring encircles the cannula and is provided with a pair of opposing arms defining a slot therebetween. A mechanism connected to the arms is operable to compress and release the arms such that the fixture can grip the cannula at a plurality of locations along the cannula. The housing/body includes a support column extending between the housing/body and the ring and an optics bore for supporting a portion of a viewing element.
摘要:
Devices and methods for performing percutaneous spinal surgery under direct visualization and through a single cannula are shown. A device (10) is provided which includes an elongated cannula (20) having a first inner diameter (D.sub.I) and an outer diameter (D.sub.O) sized for percutaneous introduction into a patient. The cannula (20) defines a working channel (25) between its ends (21, 22) which has a second diameter (D.sub.2) equal to the diameter (D.sub.I) of the cannula sized for receiving a tool therethrough. An elongated viewing element (50) is engageable to the cannula (20) adjacent the working channel (25), preferably by a fixture (30). The fixture (30) includes a housing (31) attachable to the proximal end (22) of the cannula (20) that defines a working channel opening (35) which is in communication with the working channel (25). The housing (31) also defines an optics bore (60) adjacent the working channel opening (35). In certain embodiments, the fixture (30) supports the viewing element (50) for translation and/or rotation within the optics bore (60) along the longitudinal axis of the bore, and for rotation of the housing (31) relative to the cannula (20) so that the longitudinal axis of the optics bore (60) will rotate about the longitudinal axis of the working channel (25). Methods are also provided for performing spinal surgeries percutaneously with direct visualization and without the requirement for a fluid-maintained workspace.
摘要:
The present invention relates to a novel apparel repair tool. The device is an adjustable tool for replacing buttons, fasteners or other adornments. The device includes a handle component featuring a transparent window, hammer, magazine, spring, and pusher. The transparent window allows users to see the quantity and type of staples within. The tool has a base with moveable bars, a button receiving area, and a crimper. The movable bars allow the user to adjust for the replacement of buttons or fasteners of different sizes.
摘要:
An interbody spacer includes an elongated body with a maximum width between opposite side walls and a maximum height between upper and lower bearing surfaces. The interbody spacer also includes a leading end nose connecting the side walls to facilitate insertion of the interbody spacer into a disc space between vertebrae in an insertion orientation, from which the interbody device is then rotated to position the upper and lower bearing surfaces in contact with the endplates of the adjacent vertebrae. The leading end nose forms a blunt convex nose between the upper and lower bearing surfaces to maximize the bearing surface area available to contact the adjacent endplates.
摘要:
An apparatus for providing uniform axial load distribution for laminate layers of multilayer ceramic chip carriers includes a base plate configured to support a plurality of green sheet layers thereon, the base plate having at least one resiliently mounted load support bar disposed adjacent outer edges of the base plate. The load support bar is mounted on one or more biasing members such that the top surface of the support bar extends above the top surface of the base plate by a selected distance.