CN211327699U

CN211327699U - Scalp liquid storage bag ventricular external drainage device

Info

Publication number: CN211327699U
Application number: CN201922058602.3U
Authority: CN
Inventors: 江洪祥; 陈谦学; 肖紫秋; 徐阳; 王易轩
Original assignee: Wuhan University WHU
Current assignee: Wuhan University WHU
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-08-25
Anticipated expiration: 2029-11-26

Abstract

A scalp liquid storage bag ventricular external drainage device comprises a drainage device and a pressure measuring device, wherein the drainage device comprises a drainage needle, a drainage tube and a drainage bag, the drainage tube is a flexible tube, a test tube and a control valve are sequentially arranged along the drainage direction, and the pressure measuring device is arranged on the drainage tube between the test tube and the control valve; the detection device comprises a box body and a microcontroller, a pressure sensor and an electromagnetic valve which are arranged in the box body, wherein the pressure sensor and the electromagnetic valve are sequentially arranged along the direction of drainage and are electrically connected with the microcontroller, and the microcontroller receives a pressure signal of the pressure sensor and is used for controlling a valve core of the electromagnetic valve to close or open the drainage tube. The utility model discloses a pressure measurement device cuts off the drainage operation, can prevent effectively that the condition of excessive drainage from taking place, possesses the function of pressure measurement often, automatic control drainage.

Description

Scalp liquid storage bag ventricular external drainage device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a scalp liquid storage bag ventricular external drainage device.

Background

For craniocerebral diseases, a plurality of patients need to drain cerebrospinal fluid outside the brain for a long time to relieve craniocerebral pressure, so that the aim of treating the craniocerebral diseases is fulfilled. At present, for patients needing long-time drainage clinically, medical workers find that a scalp liquid storage bag is implanted subcutaneously, then the scalp liquid storage bag is punctured by a scalp needle, and is connected with a drainage tube to continuously drain cerebrospinal fluid; therefore, the craniocerebral disease is effectively treated, the long-time drainage tube implantation is avoided, and the probability of craniocerebral infection is reduced; however, in the process of using the liquid storage bag, the problem of intracranial drainage is solved, but in clinical work, the over drainage of cerebrospinal fluid is often caused by lack of pressure monitoring of cerebrospinal fluid; too fast drainage due to the reflux of cerebrospinal fluid and the uncontrollable drainage speed is also frequently caused. The current drainage device can not complete the functions of pressure measurement and automatic drainage control all the time.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the utility model provides a scalp liquid storage bag ventricular external drainage device, concrete technical scheme is:

a scalp liquid storage bag intracerebroventricular drainage device comprises a drainage device and a pressure measuring device, wherein the drainage device comprises a drainage needle, a drainage tube connected with the drainage needle and a drainage bag connected with the drainage tube, the top of the drainage bag is provided with a pair of air vents, the bottom of the drainage bag is provided with an air vent, the drainage tube is a flexible tube, the drainage tube is sequentially provided with a test tube and a control valve along the drainage direction, and the pressure measuring device is arranged on the drainage tube between the test tube and the control valve; the detection device comprises a box body, and a microcontroller, a pressure sensor and an electromagnetic valve which are arranged in the box body, wherein the pressure sensor and the electromagnetic valve are sequentially arranged along a drainage direction and are electrically connected with the microcontroller; and the microcontroller receives a pressure signal of the pressure sensor and is used for controlling a valve core of the electromagnetic valve to close or open the drainage tube.

Further, the microcontroller is set with a pressure high limit value for controlling the valve core of the electromagnetic valve to open the drain tube and a pressure low limit value for controlling the valve core of the electromagnetic valve to close the drain tube.

Furthermore, the box body is provided with a setting button for setting the pressure high limit value and the pressure low limit value, and the setting button is electrically connected with the microcontroller.

Furthermore, the pressure high limit value is set within the range of 200-250 mmH₂O, the set range of the pressure lower limit value is 50-70 mmH₂O。

Further, the pressure high limit value is set to 250mmH₂O, the pressure lower limit value is set to 50mmH₂O。

Furthermore, a power supply is arranged in the box body and electrically connected with the microcontroller.

Furthermore, the box body is provided with a display screen for displaying the pressure of the liquid storage bag, the electric quantity of the power supply, the set high pressure limit value and the set low pressure limit value, and the display screen is electrically connected with the microcontroller.

Further, the drainage needle comprises a needle head part and a needle tail part, and the included angle between the needle head part and the needle tail part is 100-110 degrees.

Has the advantages that:

the utility model discloses a pressure measurement device cuts off the drainage operation, can prevent effectively that the condition of excessive drainage from taking place, possesses the function of pressure measurement often, automatic control drainage.

Drawings

Fig. 1 is an overall schematic view of the present invention.

Fig. 2 is a schematic view of the pressure measuring device of the present invention.

In the figure: the device comprises a drainage device 1, a drainage needle 11, a drainage tube 12, a control valve 13, a drainage bag 14, a vent port 15, a vent port 16, a test tube 17, a pressure measuring device 2, a box body 21, a microcontroller 22, a pressure sensor 23, an electromagnetic valve 24, a high setting button 25, a low setting button 26, a power supply 27, a power supply button 28 and a display screen 29.

Detailed Description

The invention will be further described with reference to the following drawings and specific embodiments:

as shown in fig. 1, a scalp reservoir ventricular external drainage device 1 comprises a drainage device 1 and a pressure measuring device 2, wherein the drainage device 1 comprises a drainage needle 11, a drainage tube 12 connected with the drainage needle 11 and a drainage bag 14 connected with the drainage tube 12, the drainage needle 11 comprises a needle head part and a needle tail part, an included angle between the needle head part and the needle tail part is 100-110 degrees, a butt-air port 15 is arranged at the top of the drainage bag 14 to enable drainage to be smoothly performed, and an emptying port 16 is arranged at the bottom of the drainage bag 14 and used for discharging cerebrospinal fluid filled in the drainage bag 14; the drainage tube 12 is a transparent flexible tube, a detection tube 17 and a control valve 13 are sequentially arranged along the drainage direction, the pressure measuring device 2 is arranged on the drainage tube 12 between the detection tube 17 and the control valve 13, a plug is arranged at the tail end of the detection tube 17, a syringe needle can be inserted into the plug to extract cerebrospinal fluid for sampling analysis, the opening degree of the control valve 13 is manually adjusted, the drainage speed can be observed through the transparent drainage tube 12, and the drainage speed is prevented from being too high and overflowing; the drainage needle 11 and the drainage bag 14 are both detachably connected with the drainage tube 12, so that the drainage needle 11 and the drainage bag 14 can be detached and then cleaned and disinfected.

As shown in fig. 2, the pressure measuring device 2 includes a box body 21, and a microcontroller 22, a pressure sensor 23, and an electromagnetic valve 24 that are arranged in the box body 21, wherein the pressure sensor 23 and the electromagnetic valve 24 are sequentially arranged along a drainage direction and are both electrically connected to the microcontroller 22, a pressure guiding port of the pressure sensor 23 is communicated with the drainage tube 12, a septum for isolating cerebrospinal fluid is arranged in the pressure sensor 23, the electromagnetic valve 24 is arranged near the drainage tube 12, and a valve core thereof can press the drainage tube 12 to close the drainage tube 12; the microcontroller 22 receives the pressure signal from the pressure sensor 23 to control the valve core of the electromagnetic valve 24 to close or open the drainage tube 12. The microcontroller 22 is set with a pressure for controlling the valve core of the solenoid valve 24 to open the drain tube 12A high limit value and a low limit value of pressure for controlling a valve core of the electromagnetic valve 24 to close the drainage tube 12, wherein the set range of the high limit value of the pressure is 200-250 mmH₂O, the set range of the pressure lower limit value is 50-70 mmH₂O; a high setting button 25 and a low setting button 26 for setting the pressure high limit value and the pressure high limit value are arranged on the box body 21, and the high setting button 25 and the low setting button 26 are electrically connected with the microcontroller 22; preferably, the pressure upper limit value is set within a range of 250mmH₂O, the pressure lower limit value is set within a range of 50mmH₂And O. A power supply 27 and a power supply button 28 are arranged in the box body 21, and the power supply 27 and the power supply button 28 are electrically connected with the microcontroller 22; the box body 21 is provided with a display screen 29 for displaying the pressure of the liquid storage bag, the electric quantity of the power supply 27, the set pressure high limit value and the set pressure low limit value, and the display screen 29 is electrically connected with the microcontroller 22.

Specifically, the electromagnetic valve 24 comprises a valve core, an electromagnet, a return spring fixed on the electromagnetic valve 24 and coils arranged around the electromagnet, the upper end of the electromagnet is connected with the return spring, the lower end of the electromagnet is connected with the upper end of the valve core, and the lower end of the valve core is arranged close to the drainage tube 12. When the body is initialized, the microcontroller 22 does not receive the pressure high limit value signal, the electromagnetic valve 24 is in a power-on state, all parts of the electromagnetic valve 24 do not act, the lower end of the valve core at the moment compresses the drainage tube 12, and the drainage tube 12 is in a closed state; when the pressure of cerebrospinal fluid in drainage tube 12 reaches 10cmH₂When the pressure sensor 23 is in an on state, the microcontroller 22 receives a pressure high limit value signal sent by the pressure sensor 23, and when the electromagnetic valve 24 is switched from the on state to the off state, the valve core moves upwards under the action of the elastic force of the return spring, so that the valve core opens the drainage tube 12; when the pressure of cerebrospinal fluid in drainage tube 12 is reduced to 10cmH₂When the microcontroller 22 receives the pressure low limit signal from the pressure sensor 23, and the solenoid valve 24 is switched from the power-off state to the power-on state, the solenoid drives the valve core to move downwards to press the drainage tube 12, so as to close the drainage tube 12 again. It should be understood, however, that the upper pressure limit may be set to different values depending on the intracranial pressure of the patient.

In the initial state, the electromagnetic valve 24 presses the drainage tube 12 tightly to make the drainage tube 12 in the closed state; the drainage needle 11 is inserted into the liquid storage bag, and the cerebrospinal fluid in the drainage needle rapidly fills the drainage tube 12 to the electromagnetic valve 24; at this time, the pressure detected by the pressure sensor 23 is displayed on the display screen 29, when the pressure high limit signal is detected, the electromagnetic valve 24 opens the drainage tube 12, the drainage speed of the cerebrospinal fluid is controlled by using the control valve 13, and simultaneously, the drainage speed is gradually slowed according to the pressure on the display screen 29; when a pressure low limit signal is detected, the electromagnetic valve 24 closes the drainage tube 12 and stops drainage. When cerebrospinal fluid needs to be extracted for examination during drainage, sample fluid can be extracted from the examination tube 17 for examination.

Claims

1. The utility model provides a scalp liquid storage bag intracerebroventricular drainage device, includes drainage device and pressure measurement device, its characterized in that: the drainage device comprises a drainage needle, a drainage tube connected with the drainage needle and a drainage bag connected with the drainage tube, the top of the drainage bag is provided with a vent, the bottom of the drainage bag is provided with a vent, the drainage tube is a flexible tube, the drainage tube is sequentially provided with a test tube and a control valve along the drainage direction, and the pressure measuring device is arranged on the drainage tube between the test tube and the control valve; the pressure measuring device comprises a box body, and a microcontroller, a pressure sensor and an electromagnetic valve which are arranged in the box body, wherein the pressure sensor and the electromagnetic valve are sequentially arranged along a drainage direction and are electrically connected with the microcontroller; and the microcontroller receives a pressure signal of the pressure sensor and is used for controlling a valve core of the electromagnetic valve to close or open the drainage tube.

2. A scalp reservoir extra-ventricular drainage device according to claim 1, characterized in that: the microcontroller is provided with a pressure high limit value for controlling the valve core of the electromagnetic valve to open the drainage tube and a pressure low limit value for controlling the valve core of the electromagnetic valve to close the drainage tube.

3. A scalp reservoir extra-ventricular drainage device according to claim 2, characterized in that: the box body is provided with a setting button for setting the pressure high limit value and the pressure low limit value, and the setting button is electrically connected with the microcontroller.

4. A scalp reservoir extra-ventricular drainage device according to claim 3, characterized in that: the set range of the pressure high limit value is 200-250 mmH₂O, the set range of the pressure lower limit value is 50-70 mmH₂O。

5. A scalp reservoir extra-ventricular drainage device according to claim 4, characterized in that: the pressure high limit value is set to 250mmH₂O, the pressure lower limit value is set to 50mmH₂O。

6. A scalp reservoir extra-ventricular drainage device according to claim 3, characterized in that: the box body is internally provided with a power supply which is electrically connected with the microcontroller.

7. A scalp reservoir extra-ventricular drainage device according to claim 6, characterized in that: the box body is provided with a display screen for displaying the pressure of the liquid storage bag, the electric quantity of the power supply, the set high pressure limit value and the set low pressure limit value, and the display screen is electrically connected with the microcontroller.

8. A scalp reservoir extra-ventricular drainage device according to claim 1, characterized in that: the drainage needle comprises a needle head part and a needle tail part, and the included angle between the needle head part and the needle tail part is 100-110 degrees.