Cerebrospinal fluid external displacement instrument

Abstract

The invention relates to a cerebrospinal fluid external exchanger, which comprises an external connecting tube (1), a pressure sensor (20, a micro pump (40 and a central controller (3). The external connecting tube (1) is divided into two branches, while the pressure detecting branch is connected with the pressure sensor (2) connected with the central controller (3). The micro pump (40 is bidirectional roller rolling pump that another branch of connecting tube (1) via said pump (4) and a three-way connector (13) is divided into lead and filling branches (5, 6) while said two branches via the steering valve (7) are respectively connected to the liquid storage bottle and the liquid feeding bottle (8, 9). The central controller (3) is connected with the steering valve (7), the pressure sensor (2), and the roller rolling pump (4) via control lines (10). The invention uses the controller (3) to control one pressure tube steering valve (7) and one bidirectional roller rolling pump (4), to realize the switch between single-pump lead and filling. The sensor insulated protector (12) can protect the pressure sensor. And the elements except the external connecting tube (1) are integrated into one-time tube combine plate, with simple structure and low cost.

Description

technical field [0001] The invention relates to a treatment device for external drainage and replacement of cerebrospinal fluid, in particular to an intelligent external replacement and cleaning system for cerebrospinal fluid, which is a medical instrument for clinical monitoring and treatment of patients with intracranial diseases. Background technique [0002] Drainage and perfusion of cerebrospinal fluid refer to the discharge of cerebrospinal fluid from the human body, the input of drugs and liquids into the human body, or the original human cerebrospinal fluid after external cleaning and filtration. The combination cleans the cerebrospinal fluid. The traditional method of drainage of cerebrospinal fluid is to let the cerebrospinal fluid drainage tube hang at a certain height, and the pathological cerebrospinal fluid will flow out naturally. This method is easy to cause siphon phenomenon, and the cerebrospinal fluid cannot be automatically discharged at a fixed time, qua...

AI Technical Summary

Problems solved by technology

The traditional method of drainage of cerebrospinal fluid is to let the cerebrospinal fluid drainage tube hang at a certain height, and the pathological cerebrospinal fluid will flow out naturally. This method is easy to cause siphon phenomenon, and the cerebrospinal fluid cannot be automatically discharged at a fixed time, quantity, and constant pressure. The replacement is also manual. It is time-consuming and labor-intensive to complete with a syringe, and it is impossible to understand the changes in intracranial pressure at that time, and the risk is very high

Some of the intracranial pressure (ICP) measurement methods currently in use are completed using glass manometry tubes. By connecting the glass manometry tubes to the cerebrospinal fluid drainage tube, and then observing the position of the cerebrospinal fluid level in the glass tube to obtain the patient's Intracranial pressure data, the operation is cumbersome and the real-time performance is not good

The Chinese Patent Bulletin once disclosed "A Cerebrospinal Fluid Pressure Monitoring and Automatic Flushing Instrument" (Patent No. ZL00227776.X), which includes a box-shaped shell, a puncture needle, a pressure measuring tube, a pressure sensor and an intracranial pressure monitor (also called CSF drainage). Replacement injection pressure monitoring and control instrument), the patent has two schemes of double pump and single pump, the cost of the double pump scheme is high, the pump of the single pump scheme is a one-way pump, and the pipelines before and after the one-way pump have branches. Four electric valves are respectively installed on the four branches to realize the replacement of drainage and perfusion. The structure of this scheme is complex and there are many parts, which increases the possibility of failure. In addition, the patented pressure sensor is directly connected to the cerebrospinal fluid drainage channel , so that the pressure sensor can only be used once, and the cost is high; the installation of the drainage replacement pipeline and the pipeline in the instrument is quite complicated, tedious and time-consuming, and the most important thing is that it is easy to cause pollution

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