Pressure-measuring fluid-discharging injection gun for lumbar puncture

Abstract

The invention discloses a pressure-measuring fluid-discharging injection gun for lumbar puncture. A cerebrospinal fluid collection trigger and a cerebrospinal fluid discharge trigger are arranged on an operation gun; the cerebrospinal fluid collection trigger is slidably hinged to the cerebrospinal fluid discharge trigger via a connection structure; a muzzle end of the operation gun is provided with a one-way valve injector; a push rod of the one-way valve injector is fixedly connected to the cerebrospinal fluid collection trigger; an inlet end of the one-way valve injector is provided with acollection one-way valve, and an outlet end of the one-way valve injector is provided with a discharge one-way valve; the inlet end is in airtight communication with a puncture needle; the cerebrospinal fluid collection trigger is used to form a negative pressure in the one-way valve injector; and the cerebrospinal fluid discharge trigger is used to form a positive pressure in the one-way valve injector through the connection structure. The pressure-measuring fluid-discharging injection gun provided by the invention achieves dynamic monitoring of a cerebrospinal fluid pressure, preservation ofa cerebrospinal fluid sample, and injection of a contrast agent and a drug at a time, and implements optimization of pressure measurement, fluid discharge and injection processes of the lumbar puncture.

Description

technical field [0001] The invention relates to the technical field of lumbar puncture devices, in particular to a lumbar puncture pressure measurement and discharge injection gun. Background technique [0002] Lumbar puncture is often used to check the properties of cerebrospinal fluid, which is of great significance to the diagnosis of neurological diseases. It is widely used in the auxiliary diagnosis of neurological diseases, such as meningitis, encephalitis, hemorrhagic cerebrovascular disease, brain tumor, spinal cord disease, etc. A neurological disorder that cannot be diagnosed and treated by routine tests. In addition, lumbar puncture can also be used for cerebrospinal fluid pressure and cerebrospinal fluid dynamics examination, injection of contrast medium and drugs. The deficiencies of the current lumbar puncture device are as follows: (1) The selection and positioning of the lumbar puncture point are poor. (2) The depth of needle insertion cannot be accurately ...

AI Technical Summary

Problems solved by technology

The shortcomings of the current lumbar puncture device are as follows: (1) The selection and positioning of the lumbar puncture point are poor

(2) The depth of needle insertion cannot be accurately estimated, which increases the possibility of secondary injury

(3) Since the connection between the lumbar puncture needle and the cerebrospinal fluid pressure measuring tube is carried out after the lumbar puncture is successful, it is necessary to repeatedly pull out and return the lumbar puncture needle core to observe whether the cerebrospinal fluid flows out. During this process, the lumbar puncture needle core is easy. Contaminated, increasing the risk of nosocomial infection

(4) When the lumbar puncture needle is connected to the cerebrospinal fluid pressure measuring tube, the connection port may cause pollution, affect the results of cerebrospinal fluid examination, and even cause iatrogenic central nervous system infection

(5) When the lumbar puncture needle is connected to the cerebrospinal fluid pressure measuring tube, the airtightness is poor, and the measurement of cerebrospinal fluid pressure is not accurate enough

(6) For some patients with high intracranial pressure, the outflow rate of cerebrospinal fluid cannot be controlled, and brain herniation is prone to occur

(7) During intrathecal injection or contrast agent injection, air bubbles may be generated at the junction of the syringe and the needle body, where the air bubbles are not easy to observe, and may enter the patient's body with the drug, endangering the patient's health

Images