6 results about "Ventricular catheters" patented technology

This application provides a flushing system based on a ventricular catheter pump, relating to the field of medical device technology. It includes: a flushing pressure filtering module for acquiring an initial flushing pressure signal collected by a flushing pressure acquisition module, performing multi-stage filtering on the initial flushing pressure signal, and using the processed initial flushing pressure signal as a target flushing pressure signal; a flushing control calculation module for acquiring the target flushing pressure signal, the current flushing flow rate signal of the flushing device, and the current motor current signal of the flushing drive motor, and using a preset closed-loop feedback mode to calculate and process the target flushing pressure signal, the flushing flow rate signal, and the motor current signal to determine the motor control signal of the flushing drive motor; and a motor drive module for driving the flushing drive motor according to the motor control signal. Applying the solution provided in this embodiment enables precise and stable flushing control.

Ventricular catheters and their methods of use are disclosed. In some embodiments, the disclosed ventricular catheters may reduce, or substantially prevent, obstruction of the catheter by astrocytes or other brain tissue due to adhesion and / or growth within the catheter. For example, in some embodiments, the holes and internal lumen of a ventricular catheter may be constructed such that the wall shear stresses applied within the holes and internal lumen of the catheter are greater than a threshold shear stress to prevent cell adhesion and growth within the catheter.

The utility model relates to the technical field of medical instruments, and particularly discloses a ventricular drainage tube placing frame which comprises a sliding frame, a sliding seat is connected to the outer side of the sliding frame in a sliding mode, an adjusting ring is connected to the outer side of the sliding frame in a threaded mode, a limiting column is arranged on the outer side of the sliding frame, and a laser positioner is arranged at one end of the sliding seat. A graduated scale is fixedly connected to the top end of the sliding seat, a hook frame is slidably connected to the outer side of the graduated scale, an adjusting mechanism used for adjusting the height of the hook frame is arranged in the hook frame and comprises a rotating column, a rotating piece and an extrusion block, and the outer side of the rotating column is in threaded connection with the interior of the hook frame. Adjustment can be carried out according to the specific condition of a patient, visual inspection and operation depending on feeling are not needed any more, the ventricular drainage tube can be placed more accurately, the operation method of nurses is unified, the operation method is more standardized, and the nursing quality is improved.

A method for ventriculostomy of the cavity of the anterior horn of the lateral ventricle in children, characterized by the fact that a calculation is carried out before the start of operative correction, based on the data of preliminary neuroimaging of the brain in the frontal and sagittal planes, while aligning the obtained images along the coordinate axes, the first side in determining the key point is selected in the projection of the widest part of the ventricular cavity, retreating from the coronary suture to the ventral side from 0 mm to 10 mm; the second side in determining the key point is selected in the frontal plane in the projection of the widest cavity of the anterior horn of the lateral ventricle of the brain, from the side of catheter placement, its maximum width is determined, the final result obtained is divided in half, the results of the two sides for determining the key point are transferred to the cranial vault;intraoperatively, a ventricular catheter is inserted through the key point parallel to the sagittal suture, and its insertion tip is directed to the imaginary biauricular line.

This application provides a right ventricular catheter pump system and a control method for the right ventricular catheter pump, relating to the field of medical device technology. The controller is used to control a target motor in the drive assembly. The controller includes a speed control component, a current control component, and a motor drive component. The current control component is used to determine a first mapping component and a second mapping component of the current current of the target motor; to fuse the first and second mapping components to obtain a target current; to calculate the current difference between the target current and the desired current; and to calculate the control voltage of the target motor based on the current difference. The stator coils are then turned on according to the coil conduction sequence and the control voltage to control the target motor. Applying the solution provided in this embodiment can improve the control accuracy of the right ventricular catheter pump.

An intracranial implant sensing device includes a flange receivable within a burr hole formed in a human skull and defining an elongated slot. The device further includes an elongate body having an arcuate sidewall defining an open guide for a ventricular catheter. The elongate body is connected to the flange such that a portion of the sidewall is disposed within or at a perimeter of the slot. A sensing electrode of the device is connected to the sidewall of the elongate body.