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6356results about "Trocar" patented technology

Electrosurgical instrument

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.

Method of making a cutting instrument having integrated sensors

A cutting instrument including a metal blade has a recess formed therein and a semiconductor substrate affixed to the blade in the recess. The semiconductor substrate includes at least one sensor formed thereon. The sensor formed on the semiconductor substrate may comprise at least one or an array of a strain sensors, pressure sensors, nerve sensors, temperature sensors, density sensors, accelerometers, and gyroscopes. The cutting instrument may also further include a handle wherein the blade is affixed to the handle and the semiconductor substrate is electrically coupled to the handle. The handle may then be coupled, either physically or by wireless transmission, to a computer that is adapted to display information to a person using the cutting instrument based on signals generated by one or more of the sensors formed on the semiconductor substrate. The computer or handle may also be adapted to store data based on the signals generated by one or more of the sensors. A method of making said cutting instrument includes the steps of at least one sensor being formed on a semiconductor wafer and a layer of photoresist being applied on a top side of the semiconductor wafer according to a pattern that matches the defined shape of the semiconductor substrate. The portion of the semiconductor wafer not covered by the photoresist is removed and thereafter the photoresist is removed from the semiconductor wafer, thereby leaving the semiconductor substrate having a defined shape and at least one sensor formed thereon. The semiconductor substrate having a defined shape and at least one sensor formed thereon is then affixed to a metal blade in a recess formed in said blade.

A surgical sealing device

InactiveUS20060161050A1Easy accessCannulasSurgical needlesEngineeringHand assisted
A surgical sealing device (405), suitable for use during a surgical procedure such as a laparoscopic procedure or a hand-assisted laparoscopic procedure, comprises a first sealing member (5) and a second sealing member (6). A thin slit is defined between the sealing members (5, 6). In a closed configuration, the first sealing member (5) overlaps the distal end opening of a passageway (2) through the second sealing member (6) to prevent leakage of insufflation gases out of an abdomen (4). In an open configuration, the first sealing member (5) is retracted to reveal the distal end opening of the passageway (2) and thus facilitate passage of an object, such as a surgeon's hand or forearm (3), into the abdomen (4). The device (405) comprises a planar support element (406) fixedly attached to the proximal exterior surface (408) of the first sealing member (5). The first sealing member (5) is fixedly attached to the second sealing member (6) at an attached region (409), with a detached region (407) remaining detached from the second sealing member (6). The support element (406) acts as a stiffening element to increase the stiffness of the detached region (407) of the first sealing member (5) to minimise the deformation of the detached region (407) of the first sealing member (5) when the surgeon's hand/forearm (3) is pushed through the passageway (2). It is thus easier for the surgeon to retract the first sealing member (5) laterally to reveal the distal end opening of the passageway (2) by pushing the hand/forearm (3) through the passageway (2) and easier for the surgeon to pass the hand/forearm (3) through the device (405) and gain access to the abdomen (4).

Combined lancet and electrochemical analyte-testing apparatus

An apparatus for detection and quantitation of an electrochemically-detect- able analyte, such as glucose, in blood or interstitial fluid includes a meter unit, a lancet and an electrochemical sensor. Of these components, the meter is preferably reusable, while the lancet and the electrochemical sensor are preferably incorporated in assemblies intended for single-use. The meter unit has a housing, within which a lancet is engaged with a mechanism for moving then lancet; a connector disposed within the housing for engaging an electrochemical sensor specific for the analyte and transmitting a signal indicative of the amount of analyte, and a display operatively-associated with a connector for displaying the amount of the analyte to user. The electrochemical sensor is adapted for detection of a particular analyte. In addition, the electrochemical sensor has an absorptive member for uptake of a sample of blood or interstitial fluid. In one version, the lancet moves from a initial position to a piercing position in which skin of the user is pierced and optionally back to a retracted position. The electrochemical sensor is disposed such that the absorptive member takes up a sample from the pierced skin of the user when it is pierced by the lancet without movement of the apparatus. In an alternative version, the lancet is a hollow cannula through which blood or interstitial fluid is transported from the puncture site to an absorbent portion of the electrochemical sensor. In either version, the apparatus provides single-step operation in which sample acquisition and analysis occur as a result of the single action of pressing the apparatus against the users skin.

Excisional biopsy devices and methods

InactiveUS6863676B2Efficiently and safely exciseMinimize complicationCannulasSurgical needlesUltrasonic sensorTissue Collection
An excisional biopsy system includes a tubular member that has a proximal end and a distal end in which one or more windows are defined. A first removable probe has a proximal portion that includes a cutting tool extender and a distal portion that includes a cutting tool. The first removable probe may be configured to fit at least partially within the tubular member to enable the cutting tool to selectively bow out of and to retract within one of the windows when the cutting tool extender is activated. A second removable probe has a proximal section that includes a tissue collection device extender and a distal section that includes a tissue collection device. The second removable probe may also be configured to fit at least partially within the tubular member to enable the tissue collection device to extend out of and to retract within one of the windows when the tissue collection device extender is activated. A third removable probe may also be provided. The third removable probe may also be configured to fit at least partially within the tubular member and may include an imaging device, such as an ultrasound transducer, mounted therein. By selectively activating the cutting tool and the tissue collection device while rotating the excisional device, a tissue specimen may be cut from the surrounding tissue and collected for later analysis.

Surgical access system

The invention is directed to a hand access system that provides hand access to a surgical area while maintaining pneumoperitoneum during laparoscopic surgery. The hand access system comprises a sheath retractor adapted to dilate a wound stretchable to a desired diameter, the sheath retractor includes a first ring being adapted for disposition interiorly of the wound, a second ring being adapted for disposition exteriorly of the wound, and a sheath being disposed in a generally cylindrical form between the first ring and the second ring and operable to exert a radial retraction force on the wound. The hand access system further comprises a detachable hand seal adapted to be removable from the second ring of the sheath retractor. The sheath retractor may be formed of an elastomeric material, and the hand seal may be formed of a gel material and includes a slit providing an instrument seal in the presence of an instrument or hand and a zero seal in the absence of the instrument or hand. In another aspect, there is disclosed a surgical access device adapted for disposition relative to an incision in a patient comprising a valve including a plurality of overlapping sheets defining an access channel, and a ring having an inner diameter for holding the valve by fixing each of the overlapping sheets along a portion of the perimeter, the access channel extends into communication with the incision in the patient. Each of the overlapping sheets includes a portion of the perimeter that is not fixed to the inner diameter of the ring, which provide open edges defining the access channel. The open edges slightly overlap at the center of the ring. The open edges may have different shapes including at least one of a straight edge, concave, convex and a cross-configuration. The hand access device may further comprise a septum seal formed at the proximal and distal ends of the ring.
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