73157results about "Surgery" patented technology

The invention relates to a deformable endoscope that has one or more light/image transmission passages and in which at least one additional instrument is provided, wherein the unit of endoscope and additional instrument has a non-round cross-section along a longitudinal section (insertion section) to be inserted into a human or animal body orifice. The light/image transmission passage or the plurality of light/image transmission passages form—in particular together with at least one work passage—a closed unit (fiberscope part) which can be separated from the additional instrument. The fiberscope part and the additional instrument can be displaced relatively relative to one another along their longitudinal directions. A holding unit is provided for the holding and/or guiding of the fiberscope part and the additional instrument relative to one another.

A medical instrument sterilization method is disclosed, which characterizes in following process: pending medical instrument for sterilization treatment being placed in a closed container, then being vacuum pumped, the vacuum pressure of the container being controlled between 1 Pa to 1500 Pa, air and/or oxygen and/or inert gases are charged to closed container and the vacuum pressure being between 1 Pa to 1500 Pa, microwave is fed, the favorable power of which should make the gas charged into the container to generate ionization, the microwave be cut after the sterilization, then air being charged to release vacuum to finish the whole process.

A valve prosthesis which is especially useful in the case of aortic stenosis and capable of resisting the powerful recoil force and to stand the forceful balloon inflation performed to deploy the valve and to embed it in the aortic annulus, comprises a collapsible valvular structure and an expandable frame on which said valvular structure is mounted. The valvular structure is composed of physiologically compatible valvular tissue that is sufficiently supple and resistant to allow the valvular structure to be deformed from a closed state to an opened state. The valvular tissue forms a continuous surface and is provided with strut members that create stiffened zones which induce the valvular structure to follow a patterned movement in its expansion to its opened state and in its turning back to its closed state.

A telemetry system and method for providing spatial positioning information from within a patient's body are disclosed. The system includes at least one implantable telemetry unit which includes (a) at least one first transducer being for converting a power signal received from outside the body, into electrical power for powering the at least one implantable telemetry unit; (b) at least one second transducer being for receiving a positioning field signal being received from outside the body; and (c) at least one third transducer being for transmitting a locating signal transmittable outside the body in response to the positioning field signal.

An electronic system includes a reader and a remotely powered and remotely interrogated sensor transponder. The sensor transponder includes a coil or an antenna, a switched reactance circuit, a processor, and a sensor. The sensor transponder receives power radiated from the reader to the coil or antenna. The sensor uses the power for sensing. The sensor transponder is capable of processing sensor data in the processor and transmitting the sensor data to the reader using the switched reactance circuit. In one embodiment, the receiver coil or antenna is part of a resonant tank circuit which includes an impedance matching circuit. The impedance matching circuit is connected to the receiver coil or antenna to provide greater current to the sensor or other power-using device than would be available to the sensor or other power-using device if the sensor or other power-using device were connected between the first and second end. The impedance matching circuit can be two or more taps to the coil or antenna.

A two-component fluid dispenser which can accurately mix two liquids of varying viscosity and then precisely deliver the mixture formed in discrete amounts. The mixture of the two components is delivered from a single delivery tube in a manner such that none of the mixture remains within the delivery tube at the completion of each mixing and delivery cycle. In one form of the apparatus, the single delivery tube of the apparatus is operably coupled with conventional hypodermic syringes of various sizes so that different fluids can be mixed in different ratios.

An identification type instrument assembly detachably connected to a main body of a medical apparatus for use in diagnosis and treatment. The instrument assembly is provided with identification signal output means for actively outputting unique self-identification signals prepared in advance under a predetermined procedure, and the connected instrument assembly can be specified in the main body by the identification signals outputted from the identification signal output means when the instrument assembly is connected to the main body.

A biointerface membrane for an implantable device including a nonresorbable solid portion with a plurality of interconnected cavities therein adapted to support tissue ingrowth in vivo, and a bioactive agent incorporated into the biointerface membrane and adapted to modify the tissue response is provided. The bioactive agents can be chosen to induce vascularization and/or prevent barrier cell layer formation in vivo, and are advantageous when used with implantable devices wherein solutes are transported across the device-tissue interface.

A guide system for use with an endoscope, and a method of use is disclosed. The guide system can include a track, in the form of a rail, and a mating member for engaging the rail. The guide system can also include an accessory, such as an accessory guide tube through which a medical instrument can be carried external of the endoscope. An end cap can be provided to support the track relative to the distal end of the endoscope.

The present invention was made in the light of the foregoing backgrounds, and an object thereof is to provide a forceps channel add-on device for an endoscope, provided on an outer periphery of an insertion portion of the endoscope. The forceps channel add-on device for an endoscope is an external forceps channel device for an endoscope, which is capable of providing two forceps channels or more without controlling the luminous intensity and the field of view of the endoscope, capable of extracting a substance larger than the bore diameter of the forceps channel multiple times while using the endoscope in a state of not being drawn out, without imposing a heavy burden on a patient, and also capable of performing examination after an operation as to whether complications are incurred after the evulsion, whether there is any other affected part overlooked, and so forth. An external forceps channel device for an endoscope, provided with an external forceps channel which is capable of being repeatedly inserted and extracted in a way of being guided by a guide provided on an endoscope separately and independently therefrom along an outside of an insertion portion of the endoscope while using the endoscope without drawing it out, the endoscope incorporating an air supply path, a light source, a CCD camera, and a forceps channel and including the insertion portion and an maneuvering portion, characterized in that provided is the external forceps channel capable of repeatedly extracting a foreign substance larger than a bore diameter of the incorporated forceps channel in a way of being guided by the guide along the outside of the endoscope, together with the whole external forceps channel itself in a state where the foreign substance is grasped by forceps inserted through the external forceps channel, and that provided is the external forceps channel capable of being repeatedly inserted in a way of being guided by the guide along the outside of the endoscope in a state where the endoscope is not drawn out.

A surgical power tool system including a cordless powered surgical tool, a battery for energizing the tool and a charger for charging the battery. The battery includes a memory. When the battery is attached to the tool, a processor integral with the tool writes data to the memory regarding the operation of the tool. When the battery is attached to the charger, the data are read out the battery memory. These data are then evaluated to determine the operational state of the tool.

The present invention is a more durable expanded material that enables thinner wall thicknesses and a more flexible reinforcement suitable for stenting. The present invention is especially useful in the construction of grafts, stents, and stent-grafts which are used, for example, in repairing or replacing blood vessels that are narrowed or occluded by disease, aneurismal blood vessels, or other medical treatments. The inventive material and configurations allow expansion or contraction in size or adjustment in size in an incremental manner so that the optimum size, shape, and fit with other objects can be obtained. The present invention is also optionally capable of more accurately delivering one or more active ingredients such as drugs over longer periods of time. The present invention optionally includes surface modifications and additives that increase the surface adhesion of active ingredients, coatings, or combinations thereof. Finally, the present invention optionally includes growing cells on the inventive material so that the expanded material, reinforcement, or combinations thereof are useful, for example, in producing lab-grown blood vessels or organs.

An ultrasonic surgical apparatus comprises an ultrasonic transducer for generating vibration in response to a drive signal to be given, and a treatment device having a probe to which the vibration is transferred from the ultrasonic transducer to effect treatment with the vibration. This device further comprises a signal generator for generating an AC signal for driving the ultrasonic transducer, and a modulator for modulating the AC signal generated by the signal generator to produce a drive signal to be given to the ultrasonic transducer.

Apparatus and methods for endoscope assemblies having working channels with reduced bending and stretching resistance are disclosed. In one embodiment, an endoscope assembly includes a sheath having a body portion adapted to at least partially encapsulate an endoscopic insertion tube, and a working channel attached to the body portion and extending along at least a portion of the body portion. The working channel includes a component for reducing the resistance of the assembly to bending and stretching. In alternate aspects, the working channel may include a cut, a gap, a sliding portion, or an expansion section. Endoscope assemblies having a working channel in accordance with the invention advantageously reduce the articulation and stretching resistance of the assembly during articulation of the endoscope assembly. Also, because the axial forces (tension and compression) within the working channel are reduced, the working channel can be fabricated out of a relatively hard, inelastic material, thereby reducing the friction within the working channel and improving the physician's ability to perform a medical procedure.

A medical imaging recording and viewing system adapted for use interchangably with a variety of endoscopes. The system includes a portable hand-held device that may be removably placed within a cradle affixed to the endoscope. An interface between an image acquisition device of the endoscope and the portable device permits images to be transmitted to and stored within the portable device. The portable device also may include a viewing screen to permit a user to view the images. A docking station may receive the portable device for transferring images to a separate viewing device and for recharging the battery of the portable device.