46774results about "Catheter" patented technology

The invention is directed to an apparatus for use in a transluminal procedure. The apparatus, comprising, for example, a housing having a guide lumen and a seal proximal to a distal end of the housing that extends across and completely seals the guide lumen; a fixation element in the housing and adapted to secure the distal end of the housing to tissue; and a channel extending through the side wall of the housing having an outlet in communication with the lumen distal of the seal. Methods are also provided. For example, a method includes, performing a transluminal procedure by: securing a datum and position indicator to a wall of a target lumen; forming an opening in the wall; advancing an instrument through the opening; and tracking the advancement of the instrument using the datum and position indicator.

An electrochemical analyte sensor having conductive traces on a substrate is used to determine a level of analyte in in vitro or in vivo analyte-containing fluids. The electrochemical analyte sensor includes a substrate and conductive material disposed on the substrate, the conductive material forming a working electrode. In some sensors, the conductive material is disposed in recessed channels formed in a surface of the sensor. An electron transfer agent and/or catalyst may be provided to facilitate the electrolysis of the analyte or of a second compound whose level depends on the level of the analyte. A potential is formed between the working electrode and a reference electrode or counter/reference electrode and the resulting current is a function of the concentration of the analyte in the fluid.

An endoscopic device for the partial fundoplication for the treatment of GERD, comprises: a) a distal bending portion and a flexible portion suitable to be positioned in extended shape within the esophagus of a subject; b) a positioning assembly comprising two separate elements, one of which is located on said distal bending portion, and the other on said flexible portion; c) a stapling assembly comprising a staple ejecting device, wherein said staple ejecting device is located on either said bending portion or on said flexible portion, said staple ejecting devices being in working positioned relationship when said two separate elements of said positioning assembly are aligned; and d) circuitry for determining when said two separate elements of said positioning assembly are aligned.

Abstract of the Disclosure

Systems and methods for dynamically and intelligently estimating analyte data from a continuous analyte sensor, including receiving a data stream, selecting one of a plurality of algorithms, and employing the selected algorithm to estimate analyte values. Additional data processing includes evaluating the selected estimative algorithms, analyzing a variation of the estimated analyte values based on statistical, clinical, or physiological parameters, comparing the estimated analyte values with corresponding measure analyte values, and providing output to a user. Estimation can be used to compensate for time lag, match sensor data with corresponding reference data, warn of upcoming clinical risk, replace erroneous sensor data signals, and provide more timely analyte information encourage proactive behavior and preempt clinical risk.

A surgical access system (100) comprises an access port (5), a rigid cannula having a shaft (11) and a laparoscopic surgical instrument (101). The access port (5) comprises a seal (6) and a retractor. The retractor comprises a distal O-ring (71), an outer proximal ring member (77), an inner proximal ring member (78) and a sleeve (72). The sleeve (72) extends distally from the inner proximal ring member (78) to the distal O-ring (71) in a first layer, is looped around the distal O-ring (71), and extends proximally in a second layer between the inner proximal ring member (78) and the outer proximal ring member (77). The instrument (101) comprises a shaft (103) with a rigid proximal region (104), a flexible intermediate region (105), and a rigid distal region (106). The instrument shaft (103) may be inserted through the cannula shaft (11). The instrument (101) has a rigid end effector (107) releasably coupled to the distal end (108) of the instrument shaft (103). An actuator (109) for actuating the end effector (107) is provided at the proximal end (110) of the instrument shaft (103). The actuator (109) is movable along the instrument shaft (103) parallel to the longitudinal axis of the instrument shaft (103).

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 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 glucose sensor package system that includes a glucose sensor and a protective package that indicates exposure to temperature changes to indicate proper temperature control. Also covered are methods of transporting and sterilizing the package. In addition, glucose sensors directed to various sizing and positioning of the electrodes on the glucose sensor are covered.

A system and method are disclosed for removing a uterus using a fluid enclosure inserted in the peritoneal cavity of a patient so as to enclose the uterus. The fluid enclosure includes a distal open end surrounded by an adjustable loop, that can be tightened, a first proximal opening for inserting an electrosurgical instrument into the fluid enclosure, and a second proximal opening for inserting an endoscope. The loop is either a resilient band extending around the edge of the distal open end or a drawstring type of arrangement that can be tightened and released. The fluid enclosure is partially inserted into the peritoneal cavity of a patient in a deflated condition and then manipulated within the peritoneal cavity over the body and fundus of the uterus to the level of the uterocervical junction. The loop is tightened around the uterocervical junction, after which the enclosure is inflated using a conductive fluid. The loop forms a pressure seal against the uterocervical junction to contain the conductive fluid used to fill the fluid enclosure. Endoscopically inserted into the fluid enclosure is an electrosurgical instrument that is manipulated to vaporize and morcellate the fundus and body of the uterus. The fundus and body tissue that is vaporized and morcellated is then removed from the fluid enclosure through the shaft of the instrument, which includes a hollow interior that is connected to a suction pump The fundus and body are removed after the uterus has been disconnected from the tissue surrounding uterus.