摘要:
A needle holder device for treating the prostate, involving a series of steps of inserting a needle into the prostate, has a rectal probe for ultrasonic 3D imaging and a computer for processing the image acquired by the probe and for computing the position of the needle relative to the prostate. The computer is controlled so as to periodically output information on the movement of the prostate after each of the insertion steps in order to validate the insertion parameters relative to a treatment schedule and, if need be, modifying the insertion parameters relative to the schedule in the event the movement is greater than a threshold value.
摘要:
A device positions and/or orients in the body of a patient, a surgical tool carried by a tool-holder, including a platform capable of being placed on the body of the patient, an orientable carrier, at least one part of which is rigidly connected to the tool-holder, means for guiding the orientable carrier rotationally relative to the platform in two directions of a plane parallel to the platform, at least 2 pneumatic actuators which engage with the orientable carrier such that a variation in pressure of at least one of the pneumatic actuators causes the orientable carrier to rotate in the first direction and/or the second direction, in which the pneumatic actuators are volumes that can deform in a predetermined direction as a function of the internal pressure.
摘要:
A disengageable free wheel includes a shaft and a ring which can rotate only in a free direction with respect to the shaft. The free wheel includes a motor for rotating the shaft in its free direction, whereby the ring can rotate at most as fast as the shaft in the direction opposite to its free direction.
摘要:
A robot for guiding movements has its power provided by an operator who handles a tool integral with the robot. Like a conventional robot, the guiding robot has several axes respectively associated with rotation sensors that are connected to a computer system memorizing a path to be followed. When the operator moves the tool beyond the stored path, blocking devices, controlled by the computer system and replacing the robot's motors, prevent the tool from continuing to depart from the path. Thus, at any time, the operator can move the tool within the stored path only. The blocking devices are passive, that is, they are such that they can only resist to a movement but cannot generate a movement, which prevents the occurrence of any uncontrolled movement.
摘要:
A needle holder device for treating the prostate, involving a series of steps of inserting a needle into the prostate, has a rectal probe for ultrasonic 3D imaging and a computer for processing the image acquired by the probe and for computing the position of the needle relative to the prostate. The computer is controlled so as to periodically output information on the movement of the prostate after each of the insertion steps in order to validate the insertion parameters relative to a treatment schedule and, if need be, modifying the insertion parameters relative to the schedule in the event the movement is greater than a threshold value.
摘要:
The invention concerns a pneumatic system for displacing a cable (1) stretched in a loop between at least two pulleys (2, 3). Said system comprises at least an artificial muscle (5) inserted over a portion of the loop, the length of said artificial muscle varying depending on whether or not it is under pressure, means for pressurizing or not the artificial muscle, and means for alternately blocking two of said pulleys in a least one rotating direction.
摘要:
A method for determining the position of a point F1 of a femur with respect to a point T1 of a tibia such that the distance between F1 and T1 is substantially invariant. The method uses a three-dimensional locating system including triplets of emitting elements especially including a pointer that can be located by the system, and includes the steps of linking a first triplet to the first organ; pointing with the pointer at the position of point T1 and locating this position with respect to the position of the first triplet; pointing with the pointer at the positions of an assembly of second points that are positioned within an area of the femur where the invariant point is likely to be found; calculating the distances separating point from each of points Fi; moving the tibia with respect to the femur add calculating the variations in the distances; and selecting point F1 for which the distance is invariant.
摘要:
A computerized bone motion tracking system according to one exemplary embodiment is configured to: provide a non-invasive means for accurate measurement and tracking of the motion of a bone using a volumetric ultrasound transducer and a three dimensional position measurement system; provide relative measurements of one bone relative to another bone of a joint; decompose relative joint motion into specific components; and measure joint instability and range of motion.
摘要:
The invention relates to a medical instrument comprising a medical tool intended, while a medical act is being performed, to be maintained by a user and/or by a robot and the position of which is intended to be determined by a tracking system, and comprising a display system having a visual control screen, a connection element connecting the display system to the tool and maintaining the minimum distance between the visual control screen and the tool under 15 centimeters and being capable of orienting the visual control screen with respect to the tool, means for transmitting to the display system data to be displayed on the visual control screen which depend on the determined position of the tool, means for supplying the display system, and a sterile enclosure containing the visual control screen, the transmission means, and the supply means.
摘要:
A remotely controllable system for positioning on a patient an observation and/or intervention device, including a frame to which the device is bound with a number of degrees of freedom; flexible connection means, each of which is arranged between the frame and a point attached to the patient's support or to the patient himself; remotely controlled means for modifying the length/tension of the binding means; and means for remotely observing the device behavior.