摘要:
A medical system for treating an internal tissue opening can include a closure device and associated delivery device. The closure device can include a body portion operatively associated with a first anchor and a second anchor. The body portion can include a plurality of segments defining a multi-cellular structure. The closure device can be configured to apply lateral force to tissue of the internal tissue opening to bring tissue together. The closure device can have a substantially flat aspect, and can include a member adapted to induce tissue growth. The anchors can extend from the body portion and return back to the body portion to define a closed periphery. The anchors can include undulations and can include multiple segments. A method of forming a closure device can include positioning a material on a working surface and cutting a closure device from the material.
摘要:
A medical system for treating an internal tissue opening can include a closure device and associated delivery device. The closure device can include a multi-cellular body portion operatively associated with a first anchor and a second anchor. The closure device can be configured to apply lateral force to tissue of the internal tissue opening for tissue approximation. The closure device can also include an ingrowth material. The delivery device can include an actuating assembly configured to partially deploy the closure device by a first movement, and deploy a second portion of the closure device by a second movement. The delivery device can also include a release assembly to selectively release or disconnect the closure device from the delivery device
摘要:
A phase change driven actuation device comprises an elongate combustion tube having: an inlet section, including an inlet for combustible material; an extinguishing section; and an ignition section, including an igniter displaced along a length of the tube from the inlet section to ignite the combustible material. A fluid is disposed adjacent an exterior surface of the elongate combustion tube and is configured to be heated by heat created by combustion of the combustible material and to at least partially undergo a phase change from a liquid state to a gaseous state upon combustion of the combustible material. At least one energy extraction device is in communication with the fluid to extract energy created by the phase change of the fluid.
摘要:
The present invention includes systems, methods, and apparatus configured to close an internal tissue opening, such as an internal tissue opening cased by an atrial septal defect including a patent foramen ovale defect, ventricular septal defect, patent ductus arterosus defect, or the like. For example, a closure device includes a right anchor cooperatively coupled with a left anchor, where the right anchor and left anchor are configured to be positioned about the internal tissue opening. The left and/or right anchor are configured to close the internal tissue opening in one instance, and to provide tissue stimulating or growth-encouraging substances at the tissue opening. Additional aspects of the invention relate to shape, formation, positioning, and detachment of the closure device about the internal tissue opening.
摘要:
A micro-machining system configured for cutting an elongate object, including a clamp configured to enable repeatedly releasing and then holding the elongate object in a position suitable for cutting the elongate object transversely relative to its lengthwise axis, and a manipulating means, which can include a pinch roller feed configured to advance the elongate element and to rotate it about a lengthwise axis of the elongate object, thereby moving the elongate object so that it can be disposed in the position suitable for cutting, and a cutter configured for forming the at least one precision cut in the elongate object to a desired depth, under the control of a controller.
摘要:
A catheter guidewire includes an elongate solid body about which a catheter may be threaded for guidance to a target location in a vasculature passageway of a body. The elongate body includes a proximal end and a distal end, with the distal end being curved. Cuts are formed either by saw-cutting, laser cutting or etching at spaced-apart locations along the length of the body to increase its lateral flexibility. Integral beams are also formed within the body to maintain its torsional strength. The relative location and size of cuts and beams may be selectively adjusted so as to control the direction and degree of flexure, and the change in torsional stiffness relative to flexibility.
摘要:
Apparatus for non-planar treatment of a workpiece utilizing exposure beam lithography includes a vacuum chamber, an exposure beam generator such as an electron beam generator disposed in the chamber for directing a beam towards a work location, a chuck disposed in the chamber for holding and positioning the workpiece at the work location, a rotary motorized stage disposed in the chamber and responsive to first control signals for selectively rotating the chuck, and thus the workpiece, to thereby expose different areas of the workpiece to the beam, and a linear motorized stage disposed in the chamber on which the rotary stage is mounted, said linear motor being responsive to second control signals for selectively moving the rotary stage and thus the chuck and workpiece in a linear direction which is generally parallel with the axis of rotation of the rotary stage. The workpiece is thus exposed over additional areas by operation of the linear stage. A controller supplies first and second control signals to the rotary stage and linear stage respectively to selectively effect the operation thereof.
摘要:
A joint for furniture uses alternating tabs and slots formed along an edge of first and second furniture panels. The panels are joined together so that tabs in the first panel are disposed in slots in the second panel and tabs in the second panel are disposed in slots in the first panel. This arrangement causes the slots to flex outwardly and the tabs to flex inwardly once assembled and creates residual stress in the assembled joint which stiffens the joint.
摘要:
A modular shelving unit includes a plurality of shelves supported by supports. Non-linear attachment pins are attached to the top of a lower shelf and received in upper supports which support an upper shelf. The attachment pins are bent so that they are wider than holes in the upper supports; bending the attachment pins elastically and maintaining them elastically bent when the shelving unit is in an assembled state.
摘要:
The fatigue reduction device includes a frame configured to receive a handle substantially perpendicularly to a longitudinal axis of the frame. A user-faceable portion of the frame is inwardly concave to conform to an arm of a user.