摘要:
A catheter and catheter system can use energy tailored for remodeling and/or removal of target material along a body lumen, often of atherosclerotic material of a blood vessel of a patient. An elongate flexible catheter body with a radially expandable structure may have a plurality of electrodes or other electrosurgical energy delivery surfaces to radially engage atherosclerotic material when the structure expands. An atherosclerotic material detector system may measure and/or characterize the atherosclerotic material and its location, optionally using impedance monitoring.
摘要:
A catheter and catheter system can use energy tailored for remodeling and/or removal of target material along a body lumen, often of atherosclerotic material of a blood vessel of a patient. An elongate flexible catheter body with a radially expandable structure may have a plurality of electrodes or other electrosurgical energy delivery surfaces to radially engage atherosclerotic material when the structure expands. An atherosclerotic material detector system may measure and/or characterize the atherosclerotic material and its location, optionally using impedance monitoring.
摘要:
Methods for determining structural integrity of a bone within the spine of a patient, the bone having a first aspect and a second aspect, wherein the second aspect separated from the first aspect by a width and located adjacent to a spinal nerve. The methods involve (a) applying an electrical stimulus to the first aspect of the bone; (b) electrically monitoring a muscle myotome associated with the spinal nerve to detect if an onset neuro-muscular response occurs in response to the application of the electrical stimulus to the first aspect of the bone; (c) automatically increasing the magnitude of the electrical stimulus to until the onset neuro-muscular response is detected; and (d) communicating to a user via at least one of visual and audible means information representing the magnitude of the electrical stimulus which caused the onset neuro-muscular response.
摘要:
Systems for determining structural integrity of a bone within the spine of a patient, the bone having a first aspect and a second aspect, wherein the second aspect separated from the first aspect by a width and located adjacent to a spinal nerve. A stimulator is configured to generate an electrical stimulus to be applied to the first aspect of the bone. A monitor is configured to electrically monitor a muscle myotome associated with the spinal nerve to detect if an onset neuro-muscular response occurs in response to the application of the electrical stimulus to the first aspect of the bone. An adjuster is configured to automatically increase the magnitude of the electrical stimulus to until the onset neuro-muscular response is detected. Lastly, a communicator is configured to communicate to a user via at least one of visual and audible means information representing the magnitude of the electrical stimulus which caused the onset neuro-muscular response.
摘要:
Described herein is a threading device that includes an elongated tube having first and second open ends and a suture tie-off location disposed approximately halfway between the first and second ends, a light guide extending through the elongated tube, and a suture received in an tied around the suture tie-off location. The light guide has first and second ends that are substantially flush with the first and second ends of the tube.
摘要:
Methods and systems are disclosed for selective drug or fluid delivery in a lumen through a coating or fluid delivery channels. One system includes an elongate catheter having a proximal end and a distal end with an axis therebetween, the catheter having a radially expandable balloon near the distal end and an energy delivery portion proximate the balloon for transmission of energy, a thermally changeable coating having a releasable drug coupled to the balloon, the thermally changeable coating being oriented to be urged against the body tissue when the expandable balloon expands and an energy source operatively coupled to the energy delivery portion configured to energize the energy delivery portion to heat and liquefy the thermally changeable coating to release the drug to the body tissue.
摘要:
Described herein is a threading device that includes an elongated rod having first and second opposite ends, and a suture having first and second opposite ends. The first end of the suture is associated with the rod. The rod is at least partially covered with a coating that secures the first end of the suture to the rod. The second end of the suture extends outside the coating. This provides a threading rod having a suture permanently attached thereto.
摘要:
An apparatus and system are disclosed for indicating relative positions of elements in a surgical apparatus. The indicating elements can include electrical circuitry that provides means for activating visual, audible or tactile indicators, thereby alerting the user that an event has occured with respect to the instrument.
摘要:
An expandable tip cannula system, comprising: a hollow cannula shaft having a proximal end and a distal end; and an expandable tip mounted at the distal end of the hollow cannula shaft, the expandable tip comprising a plurality of generally-triangular shaped petals held together in a radially-inwardly tapered arrangement between adjacent petals, each petal comprising a nerve sensing electrode disposed therein.
摘要:
A control handle assembly, comprising, a body; a pair of handles extending from the body; and an actuator disposed within the body, wherein the handles move in unison, and wherein movement of the actuator is controlled by movement of the pair of handles.