摘要:
An automated system for navigating a medical device through the lumens and cavities in an operating region in a patient. The system includes an elongate medical device, having a proximal end and a distal end adapted to be introduced into the operating region. The system also includes an imaging system for displaying an image of the operating region, including a representation of the distal end of the medical device in the operating region. The system also includes a localization system for determining the position of the medical device in a frame of reference translatable to the displayed image of the imaging system. Finally, the system includes a system for orienting the medical device in a selected direction in the operating region, this system may be, for example, a magnetic navigation system which acts through the interaction of magnetic fields associated with the medical device inside the operating region and at least one external source magnet outside the patient's body.
摘要:
The present invention refers to new classes of polymerisable monomers, to molecularly imprinted polymers obtainable by polymerisation of at least one of the monomers and a cross linking monomer in the presence of a template molecule. The obtained polymers may be used for separation of enantiomers, diastereomers of the template molecule, and also for separation of the template molecule or template molecule analogues from structurally related compounds.
摘要:
A magnetically navigable atherectomy device includes a cutting head, a flexible drive shaft having a proximal and a distal end, with the cutting device on the distal end, and a magnet associated with the cutting head, the magnet of sufficient size to allow the cutting head to be oriented by an externally applied magnetic field. The magnet may be a portion of the cutting head made from a magnetically permeable or permanent magnetic material, a portion of the drive shaft made from a magnetically permeable or permanent magnetic material; a separate magnet between the cutting head and the drive shaft, a portion a magnet on a sheath covering the drive shaft. Alternatively a guide wire can provided with a magnetic material on its distal end. Through the application of a magnetic field and/or a magnetic gradient, the artherectomy device can be guided to the location of the atheromatous material in the body. Once at the site of atheromatous material, through the application of a magnetic field or magnetic gradient, the device can be manipulated into proximity to the atheromatous material to remove the material.
摘要:
a A positive OFF toggle mechanism 402 is disclosed for a circuit breaker having “ON”, “OFF,” and “TRIPPED” conditions and corresponding handle positions. The circuit breaker 10 includes a pair of contacts 44, one of which is coupled to an operating mechanism 40 having a pivoting member 13. The positive OFF toggle mechanism 402 includes a lower toggle member 404 having a first end 412 operatively coupled to the contact 44 coupled to the operating mechanism 40 and a second end 408 coupled to a toggle pivot pin 416a; an upper toggle member 410 having a first end 412 coupled to the toggle pivot pin 416a and a second end 408 in operative contact with a toggle pin mounted on the operating mechanism 40. The positive OFF circuit breaker further includes a catch member mounted on the pivoting member of the operating mechanism 40, with the catch member arranged to engage the second end 408 of the upper toggle 410 when the circuit breaker 10 is in the TRIPPED condition and the pair of contacts remain together.
摘要:
A shirt is configured as a novelty item and includes first and second indicia on the front panel thereof wherein the indicia are related to one another in meaning. The second indicia is covered by a flap which is readily movable by a person other than the wearer of the shirt to expose the second indicia.