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Patent•

Controllable magnetic source to fixture intracorporeal apparatus

29 Jan 2010-
TL;DR: In this paper, a first magnetic field can be produced across a tissue region using a first magnetometer, providing a magnetic coupling force between the first magnetic source and a first object, wherein the first object provides a magnetic field or a magnetic susceptibility to obtain the magnetic coupling forces.
Abstract: A first magnetic field can be produced across a tissue region using a first magnetic field source, providing a magnetic coupling force between the first magnetic field source and a first object, wherein the first object provides a magnetic field or a magnetic susceptibility to obtain the magnetic coupling force. The magnetic coupling force can be sensed using a force sensor and a resulting sensed force signal can be provided to a controller. The controller can provide an output signal to control the magnetic coupling force using the sensed forced signal to obtain a constant or desired magnetic coupling force.
Citations
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Patent•
08 Jan 2010
TL;DR: In this article, an electrical ablation apparatus comprises first and second electrodes, each electrode comprising a first end configured to couple an energy source and a second end configured to couple to a tissue treatment region.
Abstract: An electrical ablation apparatus comprises first and second electrodes. Each electrode comprises a first end configured to couple an energy source and a second end configured to couple to a tissue treatment region. An energy source is coupled to the first and second electrodes. The energy source is configured to deliver a first series of electrical pulses sufficient to induce cell necrosis by irreversible electroporation and a second series of electrical pulses sufficient to induce cell necrosis by thermal heating, through at least one of the first and second electrodes. The first series of electrical pulses is characterized by a first amplitude, a first pulse length, and a first frequency. The second series of electrical pulses is characterized by a second amplitude, a second pulse length, and a second frequency.

273 citations

Patent•
16 Dec 2016
TL;DR: In this paper, the first sensor is configured to measure local perfusion in tissue grasped between the first and second jaw members, and the second sensor is configurable to measure a pressure applied to the tissue by the first or second joint members.
Abstract: A surgical instrument includes a handle portion, first and second jaw members operably coupled to the handle portion, and first and second sensors associated with the first or second jaw members. The first sensor is configured to measure local perfusion in tissue grasped between the first and second jaw members, and the second sensor is configured to measure a pressure applied to the tissue by the first and second jaw members.

152 citations

Patent•
27 Feb 2013
TL;DR: In this article, a surgical system for performing a surgical procedure includes an ex-vivo positioning mechanism and an invivo instrument magnetically attracted to the exvivo position mechanism.
Abstract: A surgical system for performing a surgical procedure includes an ex-vivo positioning mechanism and an in-vivo instrument magnetically attracted to the ex-vivo positioning mechanism. The in-vivo instrument can be positioned within a patient by moving the ex-vivo positioning mechanism. In addition, the surgical system includes a percutaneous member introducible into the patient independent from the ex-vivo positioning mechanism, the percutaneous member comprising a connector at a distal end thereof, wherein the connector is selectively couplable to the in-vivo instrument within the patient.

151 citations

Patent•
27 Aug 2009
TL;DR: In this article, a surgical device comprising a clevis defining a longitudinal axis and a jaw comprising a first member and a second member is described, where the first and second members are movable between an angular open position, a parallel open position and a parallel closed position.
Abstract: A surgical device comprising a clevis defining a longitudinal axis and a jaw comprising a first member and a second member. A slider is slidably engaged to the clevis, the slider comprising a pin. The pin is receiveably engaged in the first slot and the jaw is selectively moveable between a first position and a second position through longitudinal movement of the slider. In various embodiments, the first and second members are movable between an angular open position, a parallel open position, and a parallel closed position.

130 citations

Patent•
Gary L. Long1, David N. Plescia1•
29 Jan 2010
TL;DR: In this article, a surgical instrument can comprise a first electrode, a second electrode, and a retractable sheath, and at least one of the electrodes can comprise an insulative jacket extending along the length thereof which can comprise tissue stop for limiting the progression of the electrode into tissue.
Abstract: A surgical instrument can comprise a first electrode, a second electrode, and a retractable sheath. At least one of the electrodes can comprise an insulative jacket extending along the length thereof which can comprise a tissue stop for limiting the progression of the electrode into tissue. In various embodiments, a surgical instrument can comprise a first electrode, a second electrode, and a displaceable arc guard positioned between the electrodes. In certain embodiments, a surgical instrument can comprise an electrode including a flexible mesh configured to conform to the tissue against which it is positioned.

103 citations

References
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Patent•
23 Jun 2006
TL;DR: In this article, a system and single or multi-functional element device that can be inserted and temporarily placed or implanted into a structure having a lumen or hollow space, such as a subject's abdominal cavity to provide therewith access to the site of interest in connection with minimally invasive surgical procedures.
Abstract: The present invention provides a system and single or multi-functional element device that can be inserted and temporarily placed or implanted into a structure having a lumen or hollow space, such as a subject's abdominal cavity to provide therewith access to the site of interest in connection with minimally invasive surgical procedures. The insertable device may be configured such that the functional elements have various degrees of freedom of movement with respect to orienting the functional elements or elements to provide access to the site from multiple and different orientations/perspectives as the procedure dictates, e.g., to provide multiple selectable views of the site, and may provide a stereoscopic view of the site of interest.

816 citations

Patent•
08 Jun 2007
TL;DR: In this article, an adjustable restriction device having a contact surface configured for at least partially engaging a surface of a gastrointestinal tract of a mammal was presented. But the system was not designed for the use of humans.
Abstract: A gastrointestinal implant system includes an adjustable restriction device having a contact surface configured for at least partially engaging a surface of a gastrointestinal tract of a mammal. The implant system further includes an implantable interface including a first driving element, the first driving element being moveable and operatively coupled to the adjustable restriction device by an actuator configured to change the dimension or configuration of the contact surface in response to movement of the first driving element. The system also includes an external adjustment device having a second driving element configured to non-invasively engage the first driving element of the implantable interface from a location external to the mammal. In the system, actuation of the second driving element of the external adjustment device produces movement in the first driving element of the implantable interface and results in a change in the dimension or configuration of the contact surface.

394 citations

Patent•
09 Oct 2007
TL;DR: In this paper, a Catheter Guidance Control and Imaging (CGCI) system whereby a magnetic tip attached to a surgical tool is detected, displayed and influenced positionally so as to allow diagnostic and therapeutic procedures to be performed is described.
Abstract: A Catheter Guidance Control and Imaging (CGCI) system whereby a magnetic tip attached to a surgical tool is detected, displayed and influenced positionally so as to allow diagnostic and therapeutic procedures to be performed is described. The tools that can be so equipped include catheters, guidewires, and secondary tools such as lasers and balloons. The magnetic tip performs two functions. First, it allows the position and orientation of the tip to be determined by using a radar system such as, for example, a radar range finder or radar imaging system. Incorporating the radar system allows the CGCI apparatus to detect accurately the position, orientation and rotation of the surgical tool embedded in a patient during surgery. In one embodiment, the image generated by the radar is displayed with the operating room imagery equipment such as, for example, X-ray, Fluoroscopy, Ultrasound, MRI, CAT-Scan, PET-Scan, etc. In one embodiment, the image is synchronized with the aid of fiduciary markers located by a 6-Degrees of Freedom (6-DOF) sensor. The CGCI apparatus combined with the radar and the 6-DOF sensor allows the tool tip to be pulled, pushed, turned, and forcefully held in the desired position by applying an appropriate magnetic field external to the patient's body. A virtual representation of the magnetic tip serves as an operator control. This control possesses a one-to-one positional relationship with the magnetic tip inside the patient's body. Additionally, this control provides tactile feedback to the operator's hands in the appropriate axis or axes if the magnetic tip encounters an obstacle. The output of this control combined with the magnetic tip position and orientation feedback allows a servo system to control the external magnetic field.

387 citations

Patent•
21 Jun 2007
TL;DR: In this paper, magnetically coupleable robotic surgical devices that can be inserted into a patient's body and can be positioned within the person's body using an external magnet are presented.
Abstract: The present invention relates to magnetically coupleable robotic surgical devices. More specifically, the present invention relates to robotic surgical devices that can be inserted into a patient's body and can be positioned within the patient's body using an external magnet.

105 citations

Patent•
26 Feb 2008
TL;DR: An adjustable medical system as mentioned in this paper includes an adjustable implant having an adjustable portion configured to the change dimension or orientation of an internal portion of a mammal and a driven portion comprising a magnetically responsive element configured for rotation about an axis of rotation.
Abstract: An adjustable medical system includes an adjustable implant having an adjustable portion configured to the change dimension or orientation of an internal portion of a mammal and a driven portion comprising a magnetically responsive element configured for rotation about an axis of rotation. The system further includes an external adjustment device configured to magnetically couple to the driven portion from a location external to the mammal, the external adjustment device comprising a first permanent magnet configured for rotation about a first axis and a second permanent magnet configured for rotation about a second axis different from the first axis. Cooperative rotation of the first permanent magnet about the first axis and rotation of the second permanent magnet about the second axis result in rotation of the magnetically responsive element about its axis of rotation.

28 citations