Cerebrospinal fluid quantitative shunt system and shunt method

Abstract

The invention discloses a cerebrospinal fluid quantitative shunt system and a shunt method. The system comprises a cerebrospinal fluid shunt valve, a liquid inlet pipe from the brain ventricle or the lumbar cistern to the cerebrospinal fluid shunt valve, a liquid outlet pipe from the cerebrospinal fluid shunt valve to the abdominal cavity, and a body surface control The device; the cerebrospinal fluid shunt valve includes a cavity and a magnetic induction valve, the cavity is divided into two chambers by a piston, and the two sides of the cavity are connected with the liquid inlet pipe and the liquid outlet pipe through the magnetic induction valve; the piston moves horizontally in the cavity under the hydraulic pressure difference ; The electromagnetic field controls the rotation angle of the magnetic induction valve in different phases, and then switches the connection between the liquid inlet pipe and the liquid outlet pipe. The external induction control card obtains the time from the opening time point to the filling time point of the chamber connected to the liquid inlet pipe, calculates the time required for a quantitative shunt, and obtains the shunt speed, thereby calibrating the upstream and downstream hydraulic pressure difference of the chamber. The invention judges whether the pressure of the ventricular system of the patient is in the normal range by calculating the pressure value of the patient's ventricular system, and avoids the occurrence of siphon, excessive shunt and cerebrospinal fluid backflow.

Description

technical field [0001] The invention relates to a neurosurgery cerebrospinal fluid shunt system, in particular to a cerebrospinal fluid quantitative shunt system and a shunt method. Background technique [0002] In neurosurgical treatment of communicating and non-communicating hydrocephalus, in addition to the use of drugs to reduce cerebrospinal fluid secretion, third ventricle floor fistula, end plate fistula, and third ventricle aqueduct remodeling, the most common method is to perform ventriculo- Abdominal shunt, lumbar-peritoneal shunt, shunt the redundant cerebrospinal fluid in the ventricular system, reduce the volume of cerebrospinal fluid in the ventricular system, thereby reducing the pressure of the ventricular system and improving the symptoms of intracranial hypertension. [0003] However, the current ventriculoperitoneal shunt and lumbar peritoneal shunt system have the following shortcomings: [0004] (1) The current diversion system is divided into the follo...

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Problems solved by technology

This brings unnecessary secondary surgery pain and huge economic burden to patients

[0006] The second type is an adjustable pressure shunt system. Patient pressure adjustment requires special pressure adjustment tools and equipment, as well as professional and technical personnel to operate, which brings inconvenience to patients and increases labor costs.

For patients who have been installed with traditional ventriculoperitoneal shunt and lumbar-peritoneal shunt system, under such pressure fluctuations, excessive shunting of cerebrospinal fluid may occur.

The traditional ventriculoperitoneal shunt and lumbar-peritoneal shunt system are difficult to control this transitional shunt

[0008] The fourth is that the traditional ventriculoperitoneal shunt system and lumbar cisterna shunt system of some patients are suddenly blocked or unexpectedly stop the shunt function after operation, which cannot be fed back in time, which makes the patient lose the opportunity to intervene in time, resulting in patients, especially infants and young children. Sexual condition changes, even death

[0009] (2) The existing shunt system is expensive, and patients cannot bear the cost of the medical equipment

[0010] (3) It is impossible to provide the feedback information of the shunt velocity and the volume of the shunt fluid for the patient within a certain period of time, and it is impossible to calculate the hydraulic pressure difference between the upstream and downstream of the traditional ventriculoperitoneal shunt and the lumbar peritoneal shunt system during a certain period of time, so it is impossible to achieve a personalized adjustment plan

Traditional ventricular-peritoneal shunt and lumbar-peritoneal shunt systems cannot achieve personalized adjustments, such as day, hour, and adjustment of the valve working state before a specific exercise state

[0011] (4) When the patient coughs, urinates and defecates, some traditional ventriculoperitoneal shunt and lumbar cistern peritoneal shunt systems will cause peritoneal effusion to flow back to the ventricle and lumbar cistern, increasing the risk of central infection and sudden increase in pressure of the ventricular system

[0012] (5) Due to the siphon effect, some traditional ventriculoperitoneal shunts and lumbar peritoneal shunt systems shunt too much cerebrospinal fluid to the peritoneal cavity, resulting in hypocephalus of the ventricular system and even secondary damage to the patient

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