13 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 discloses a ventricular drainage tube lifting frame, and belongs to the field of medical instruments. A ventricular drainage tube lifting frame comprises a clamping seat and an installation plate installed on the clamping seat, a vertical plate is installed on the installation plate in a sliding mode, a T-shaped sliding groove is formed in the installation plate, a sliding plate is installed on the side, facing the installation plate, of the vertical plate, and first graduated scales are arranged at the two ends of the other side of the vertical plate. A hook assembly close to the upper end of the vertical plate is arranged between the two first graduated scales on the vertical plate, the sliding plate comprises a T-shaped sliding block installed on the vertical plate, and the outer side of the T-shaped sliding block is connected with an elastic plate through a plurality of first reset springs; through the arrangement of the sliding plate, the T-shaped sliding block installed on the vertical plate and the elastic plate connected with the outer side of the T-shaped sliding block through the first reset springs, the T-shaped sliding block is extruded through the first reset springs when the height is adjusted, so that the height of the vertical plate is limited after the T-shaped sliding block makes contact with the vertical plate, and the height is conveniently adjusted.

A system for monitoring cerebrospinal fluid (CSF) intracranial pressure and shunt flow in a hydrocephalus patient. It may include a ventricular catheter, a peritoneal catheter and a valve in fluid communication with the catheters. Piezoelectric pressure sensors may be disposed on each end of the catheters. An intracranial electret pressure sensor may be disposed on the ventricular cavity end of the ventricular catheter. A processing and transmission module may determine pressure values at each of said sensors, compute shunt flow comprising ventricular catheter and peritoneal catheter flow rates, and cause a wireless data transmitter to transmit a CSF pressure value and shunt flow to an external receiver.

Apparatus for shunting cerebrospinal fluid comprising a ventricular catheter coupled to an artificial fontanelle and a peritoneal catheter. The ventricular catheter may be coupled to the artificial fontanelle and peritoneal catheter via a three-way coupler or the ventricular catheter may be coupled to the peritoneal catheter through the artificial fontanelle. The cerebrospinal fluid flow resistance is lower between the ventricular catheter and the artificial fontanelle than the cerebrospinal fluid flow between the artificial fontanelle and the peritoneal catheter.

Apparatus for shunting cerebrospinal fluid comprising a ventricular catheter coupled to an artificial fontanelle and a peritoneal catheter. The ventricular catheter may be coupled to the artificial fontanelle and peritoneal catheter via a three-way coupler or the ventricular catheter may be coupled to the peritoneal catheter through the artificial fontanelle. The cerebrospinal fluid flow resistance is lower between the ventricular catheter and the artificial fontanelle than the cerebrospinal fluid flow between the artificial fontanelle and the peritoneal catheter.

A ventricular drainage tube fixed height measurer disclosed by the present invention is characterized in that a height adjusting mechanism comprises a supporting frame fixedly connected to one side of the top of a bottom plate, one side of the supporting frame fixedly communicates with a gear box, the interior of the gear box is rotatably connected with a first gear, and one side of the first gear is engaged with a first rack; the bottom of one side of the first rack is fixedly connected with a sliding block, one side of the sliding block is fixedly connected with a supporting plate, the two sides of the supporting plate are both fixedly connected with pointers, the two sides of the supporting frame are both provided with scale strips, and the center of one side of the gearbox is fixedly connected with a handle. The length of the adjusted height is distinguished by observing the scale strip, compared with a daily-used height adjusting device with a simple ruler, the mechanism is more stable in the using process, the height of a drainage tube can be adjusted more accurately, the operation is more convenient, and the practicability is high. And the adjustment height of the drainage tube can be measured more conveniently.

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.

To provide a shunt system used to treat excess cerebrospinal fluid (CSF) accumulation.SOLUTION: In some embodiments, a system includes a cleaning mechanism designed to clean a portion of a shunting system. A ventricular catheter used in a CSF draining shunt system includes slits to facilitate CSF drainage, and biodegradable or bioresorbable material along one or more of these slits. A locking mechanism facilitating secure fitting between a catheter tubing and a shunt valve element is described. A mechanical valve to regulate CSF flow within a valve housing between a CSF inlet and a CSF outlet is described.SELECTED DRAWING: Figure 1

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.

The embodiment of the application provides a position detection method and device of a ventricular catheter pump, relates to the technical field of medical devices, and the ventricular catheter pump is integrated with a positioning assembly; the positioning assembly is used for collecting position information of the ventricular catheter pump; the method comprises the following steps: determining a current sequence comprising a current of the ventricular catheter pump at each moment in a target time period, and determining a pressure sequence comprising a cardiac pressure of a target object at each moment in the target time period; based on the current sequence and the pressure sequence, a first region in which the ventricular catheter pump is located in a heart of the target object is calculated; position information collected by the positioning assembly at each moment in the target time period is acquired, and based on the acquired position information, a second region in which the ventricular catheter pump is located in the heart of the target object is determined; and based on the first region and the second region, a target position of the ventricular catheter pump is calculated. By applying the scheme provided in the embodiment, the position of the ventricular catheter pump can be accurately detected.

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.