阅读说明：本技术 一种利用充气球囊导管自动监测颅内压的方法和装置 (Method and device for automatically monitoring intracranial pressure by utilizing inflatable balloon catheter ) 是由 沈傲杰 托德.维罗尼 塞缪尔.莫斯曼 赖知强 于 2019-10-14 设计创作，主要内容包括：本发明公开了一种利用充气球囊导管自动监测颅内压的方法和装置,包括外壳总成、适配器电缆、连接器组件和注射泵总成,所述外壳总成内固定安装有电路板,所述电路板上集成安装有微处理器,所述外壳总成底部的内侧壁上固定安装有电磁阀一和压力传感器一,所述微处理器通过电线分别与电磁阀一和压力传感器一连接,所述注射泵总成包括步进电机、支架、滚珠丝杠和注射器,所述注射器固定安装在支架一端的顶部,所述步进电机通过螺栓安装在支架另一端的顶部,该利用充气球囊导管自动监测颅内压的方法和装置设计合理,能够实现监测准确性的同时,有效的预防患者感染,提高安全性。(The invention discloses a method and a device for automatically monitoring intracranial pressure by utilizing an inflatable balloon catheter, which comprises a shell assembly, an adapter cable, a connector component and an injection pump assembly, wherein a circuit board is fixedly arranged in the shell assembly, a microprocessor is integrally arranged on the circuit board, a first electromagnetic valve and a first pressure sensor are fixedly arranged on the inner side wall of the bottom of the shell assembly, the microprocessor is respectively connected with the first electromagnetic valve and the first pressure sensor through electric wires, the injection pump assembly comprises a stepping motor, a support, a ball screw and an injector, the injector is fixedly arranged at the top of one end of the support, the stepping motor is arranged at the top of the other end of the support through bolts, the method and the device for automatically monitoring the intracranial pressure by utilizing the inflatable balloon catheter are reasonable in design, can realize monitoring accuracy and effectively prevent infection of a patient, the safety is improved.)

1. The utility model provides an utilize device of sacculus pipe automatic monitoring intracranial pressure, includes shell assembly (1), adapter cable (2), connector subassembly (3) and syringe pump assembly (4), its characterized in that, fixed mounting has circuit board (13) in shell assembly (1), integrated installation has microprocessor (5) on circuit board (13), fixed mounting has solenoid valve (9) and pressure sensor (6) on the inside wall of shell assembly (1) bottom, microprocessor (5) are connected with solenoid valve (9) and pressure sensor (6) respectively through the electric wire, syringe pump assembly (4) include step motor (11), support (16), ball (18) and syringe (17), microprocessor (5) are connected with step motor (11) through the electric wire, syringe (17) fixed mounting is at the top of support (16) one end, the device comprises a stepping motor (11), a ball screw (18), a plunger of the injector (17), a nut of the ball screw (18), an injector (17), a shell assembly (1), a solenoid valve I (9), 2 hose connectors, a cable sheath (21) and a hollow conduit (20), wherein the stepping motor (11) is installed at the top of the other end of the bracket (16) through a bolt, the ball screw (18) is fixedly installed on the bracket (16) and is located between the stepping motor (11) and the injector (17), an output shaft of the injector (17) is fixedly connected with a screw of the ball screw (18), the plunger of the injector (17) is connected with the nut of the ball screw (18), the bracket (16) is installed on the inner side wall of the shell assembly (1) through a bolt, one end, close to an output port, of the injector (17) is connected with the solenoid valve I (9, the hollow conduit (20) is arranged in an outer cable sheath (21), a driving wire (19) is further installed in the outer cable sheath (21), the number of the driving wires (19) is 2, the other hose joint on the first pressure sensor (6) is connected with one end of the hollow conduit (20), the connector assembly (3) comprises a connector shell (14) and a conduit connector (15), the conduit connector (15) is fixedly installed at the bottom of the connector shell (14), a second electromagnetic valve (10) and a second pressure sensor (7) are fixedly installed in the connector shell (14), the microprocessor (5) is respectively connected with the second electromagnetic valve (10) and the second pressure sensor (7) through the two pairs of driving wires (19), the second pressure sensor (7) is provided with 2 hose joints, and the other end of the hollow conduit (20) is connected with one hose joint, the other hose connector is connected with a catheter connector (15), a battery (12) is fixedly mounted in the housing assembly (1), the battery (12) is electrically connected with a microprocessor (5), a touch display screen (8) is fixedly mounted on the front side of the housing assembly (1), a monitor connecting cable (22) is connected to the bottom of the housing assembly (1), the microprocessor (5) is electrically connected with the monitor connecting cable (22), and the method for automatically monitoring intracranial pressure by using the inflatable balloon catheter comprises the following steps:

the method comprises the following steps: connecting equipment; connecting a monitor connecting cable (22) with an external monitor, and connecting a catheter connector (15) with the balloon catheter;

step two: exhausting gas by the injector; the injector is operated to exhaust through a touch display screen (8), a microprocessor (5) receives a signal and then controls a first electromagnetic valve (9) to be opened and a second electromagnetic valve (10) to be closed, so that the injector (17) is communicated with the atmosphere, a stepping motor (11) is controlled to drive a plunger of the injector (17) to move forwards through a ball screw (18) and exhaust to the atmosphere, and after the plunger of the injector (17) moves to the foremost end, the first electromagnetic valve (9) is closed, so that the injector (17) is disconnected from the atmosphere;

step three: the balloon catheter is operated to exhaust through a touch display screen (8), the microprocessor (5) receives signals and then controls the first electromagnetic valve (9) to be closed, so that the injector (17) is disconnected from the atmosphere, the second electromagnetic valve (10) is controlled to be opened, so that the air passage of the balloon catheter and the hollow catheter (20) is opened, the plunger of the injector (17) moves towards the rear end until the preset exhaust amount of the balloon catheter is reached, and the second electromagnetic valve (10) is closed, so that the air passage of the balloon catheter and the hollow catheter (20) is closed;

step four: inflating the injector; opening the first electromagnetic valve (9) to communicate the injector (17) with the atmosphere, controlling the stepping motor (11) by the microprocessor (5) to drive the plunger of the injector (17) to move to the rear end continuously through the ball screw (18), and sucking quantitative gas into the injector (17);

step five: injecting gas; closing the first electromagnetic valve (9), disconnecting the communication with the atmosphere, opening the second electromagnetic valve (10), controlling the stepping motor (11) to drive the plunger of the injector (17) to move forwards through the ball screw (18) by the microprocessor (5), and injecting gas with known volume into the balloon catheter through the hollow catheter (20);

step six: monitoring the pressure; closing the second electromagnetic valve (10) to isolate the communication between the syringe (17) and the balloon catheter and the second pressure sensor (7), closing the first electromagnetic valve (9) to disconnect the connection with the atmosphere, filling a certain volume of gas in the balloon, and enabling the second pressure sensor (7) to detect the air pressure in the balloon catheter, wherein the pressure in the balloon is equal to the pressure in the surrounding fluid medium environment according to the Boyle's law (P1V1= P2V2), so that the intracranial pressure value is calculated and the purpose of monitoring the intracranial pressure is achieved.

2. An apparatus for automatically monitoring intracranial pressure using an inflatable balloon catheter as recited in claim 1, wherein: the monitor connecting cable (22) is used for connecting an external monitor.

3. An apparatus for automatically monitoring intracranial pressure using an inflatable balloon catheter as recited in claim 1, wherein: the number of the drive wires (19) can be set as required.

4. An apparatus for automatically monitoring intracranial pressure using an inflatable balloon catheter as recited in claim 1, wherein: the catheter connector (15) is used for connecting a balloon catheter.

5. The device for automatically monitoring intracranial pressure using an inflatable balloon catheter as claimed in claim 1, wherein the inner diameter of the hollow catheter (20) is less than Ø 0.020.020.

Technical Field

The invention relates to a method and a device for automatically monitoring intracranial pressure by using an inflatable balloon catheter, belonging to the technical field of intracranial pressure monitoring.

Background

Intracranial pressure monitoring is the monitoring of the pressure of cranial cavity contents on the wall of the cranial cavity, by analyzing the changes of the intracranial pressure of a patient, can help to judge the situations of the patient such as the traumatic cerebral edema, however, the existing pneumatic intracranial pressure monitoring method and device need to require the user to inject gas into the balloon catheter manually, and use the optical fiber transmission technology or the electric pressure sensing technology, if a patient needs to undergo a Magnetic Resonance Imaging (MRI) examination, the probe is removed from the patient, because the probe part is provided with metal or a circuit, and the probe needs to be taken out and reset after being disconnected, so as to ensure the accuracy of the monitoring data, the operation is very inconvenient, and the drainage of cerebrospinal fluid is that the real-time automatic intracranial pressure (ICP) monitoring can not be realized at the same time, so the invention provides a method and a device for automatically monitoring the intracranial pressure by using an inflatable balloon catheter.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a method and a device for automatically monitoring intracranial pressure by using an inflatable balloon catheter, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a device for automatically monitoring intracranial pressure by utilizing an inflatable balloon catheter comprises a shell assembly, an adapter cable, a connector component and an injection pump assembly, wherein a circuit board is fixedly installed in the shell assembly, a microprocessor is integrally installed on the circuit board, a first electromagnetic valve and a first pressure sensor are fixedly installed on the inner side wall of the bottom of the shell assembly, the microprocessor is respectively connected with the first electromagnetic valve and the first pressure sensor through electric wires, the injection pump assembly comprises a stepping motor, a support, a ball screw and an injector, the microprocessor is connected with the stepping motor through electric wires, the injector is fixedly installed at the top of one end of the support, the stepping motor is installed at the top of the other end of the support through bolts, the ball screw is fixedly installed at a position between the stepping motor and the injector on the support, and an output shaft of the stepping motor is fixedly connected with a screw rod of the ball screw, the plunger of the injector is connected with a nut of a ball screw, the bracket is installed on the inner side wall of the shell assembly through a bolt, one end of the injector close to the output port is connected with a first electromagnetic valve through a pipeline, 2 hose joints are arranged on a first pressure sensor, the output port of the injector is connected with one hose joint through a hose, the adapter cable comprises a cable outer sheath and a hollow conduit, the hollow conduit is arranged in the cable outer sheath, a driving wire is further installed in the cable outer sheath, the number of the driving wires is 2, the other hose joint on the first pressure sensor is connected with one end of the hollow conduit, the connector assembly comprises a connector shell and a conduit connector, the conduit connector is fixedly installed at the bottom of the connector shell, and a second electromagnetic valve and a second pressure sensor are fixedly installed in the connector shell, the microprocessor is respectively connected with a second electromagnetic valve and a second pressure sensor through two pairs of driving wires, the second pressure sensor is provided with 2 hose connectors, the other end of the hollow catheter is connected with one hose connector, the other hose connector is connected with a catheter connector, a battery is fixedly mounted in the shell assembly and electrically connected with the microprocessor, a touch display screen is fixedly mounted on the front side of the shell assembly, the bottom of the shell assembly is connected with a monitor connecting cable, the microprocessor is electrically connected with the monitor connecting cable, and the method for automatically monitoring intracranial pressure by using the inflatable balloon catheter comprises the following steps:

the method comprises the following steps: connecting equipment; connecting a monitor connecting cable with an external monitor, and connecting a catheter connector with a balloon catheter;

step two: exhausting gas by the injector; the injector is operated to exhaust through a touch display screen, the microprocessor receives signals and then controls the first electromagnetic valve to be opened and the second electromagnetic valve to be closed to enable the injector to be communicated with the atmosphere, the stepping motor is controlled to drive the plunger of the injector to move forwards through the ball screw to exhaust the atmosphere, and after the plunger of the injector moves to the foremost end, the first electromagnetic valve is closed to enable the injector to be disconnected from the atmosphere;

step three: the balloon catheter is operated to exhaust through a touch display screen, the microprocessor receives signals and then controls the first electromagnetic valve to be closed, so that the injector is disconnected from the atmosphere, the second electromagnetic valve is controlled to be opened, so that the air passage of the balloon catheter and the hollow catheter is opened, the plunger of the injector moves towards the rear end until the preset exhaust amount of the balloon catheter is reached, and the second electromagnetic valve is closed, so that the air passages of the balloon catheter and the hollow catheter are closed;

step four: inflating the injector; opening the first electromagnetic valve to communicate the injector with the atmosphere, controlling the stepping motor by the microprocessor to drive the plunger of the injector to continuously move towards the rear end through the ball screw, and sucking quantitative gas into the injector;

step five: injecting gas; closing the first electromagnetic valve, disconnecting the communication with the atmosphere, opening the second electromagnetic valve, controlling the stepping motor by the microprocessor to drive the plunger of the injector to move forwards through the ball screw, and injecting gas with known volume into the balloon catheter through the hollow catheter;

step six: monitoring the pressure; and closing the second electromagnetic valve to isolate the communication between the syringe and the balloon catheter and the second pressure sensor, closing the first electromagnetic valve to disconnect the connection with the atmosphere, filling a certain volume of gas in the balloon, and detecting the air pressure in the balloon catheter by the second pressure sensor, wherein the pressure in the balloon is equal to the pressure in the surrounding fluid medium environment according to the Boyle's law (P1V1= P2V2), so that the intracranial pressure value is calculated and the aim of monitoring the intracranial pressure is fulfilled.

In one embodiment: the monitor connecting cable is used for connecting an external monitor.

In one embodiment: the number of the driving wires can be set as required.

In one embodiment: the catheter connector is used for connecting a balloon catheter.

In one embodiment, the inner diameter of the hollow conduit is less than Ø 0.020.020.

After the technical scheme is adopted, on one hand, no matter the position of a patient or a pressure sensor, the real-time automatic intracranial pressure (ICP) monitoring can be simultaneously realized during drainage of cerebrospinal fluid, the calibration and any subsequent recalibration (return to zero) can be carried out under the condition of not removing a balloon catheter, so that the infection of the patient can be prevented, the safety is high, the inflation/exhaust system can be automatically controlled, gas with a quantitative volume can be accurately injected/exhausted, the measurement accuracy is met, a touch display screen can display numerical values and a waveform diagram, the condition of the patient can be reviewed and predicted by the waveform diagram with a certain period, if the patient needs to carry out nuclear Magnetic Resonance (MRI) examination, the balloon catheter implanted in the patient does not need to be taken out, because the circuit and the sensor component of the technology are arranged at the cable end of an adapter, under the condition of disconnection, the balloon catheter portion does not contain metal or electrical circuitry;

on the other hand, the device for automatically monitoring the intracranial pressure by utilizing the inflatable balloon catheter can be connected with a monitor for use and can also be used independently of the monitor, and a battery is arranged in the device, so that power can be supplied by the battery within a certain time interval, and the intracranial pressure monitoring is provided for a patient in transit;

in addition, the device for automatically monitoring intracranial pressure by using the inflatable balloon catheter provides pneumatic connection between the balloon catheter and the injection pump assembly through the hollow catheter with the inner diameter not exceeding Ø 0.020.020, so that the gas volume required for filling or discharging the hollow catheter in the inflation period of the hollow catheter is reduced as much as possible, and the monitoring precision is prevented from being influenced.

Drawings

FIG. 1 is a schematic structural diagram of an apparatus for automatically monitoring intracranial pressure using an inflatable balloon catheter according to the present invention;

FIG. 2 is a front view of an apparatus for automatically monitoring intracranial pressure using an inflatable balloon catheter in accordance with the present invention;

FIG. 3 is a schematic cross-sectional view of a housing assembly of an apparatus for automatically monitoring intracranial pressure using an inflatable balloon catheter in accordance with the present invention;

FIG. 4 is a schematic cross-sectional view of a connector assembly of an apparatus for automatically monitoring intracranial pressure using an inflatable balloon catheter in accordance with the present invention;

FIG. 5 is a schematic view of the syringe pump assembly of the present invention for an apparatus for automatically monitoring intracranial pressure using an inflatable balloon catheter;

FIG. 6 is a schematic cross-sectional view of an adapter cable of an apparatus for automatically monitoring intracranial pressure using an inflatable balloon catheter according to the present invention;

FIG. 7 is a schematic wiring diagram of a microprocessor of an apparatus for automatically monitoring intracranial pressure using an inflatable balloon catheter according to the present invention;

FIG. 8 is a flow chart illustrating the steps of a method of automatically monitoring intracranial pressure using an inflatable balloon catheter, in accordance with the present invention;

in the figure: the system comprises a shell assembly, a 2-adapter cable, a 3-connector component, a 4-injection pump assembly, a 5-microprocessor, a 6-pressure sensor I, a 7-pressure sensor II, an 8-touch display screen, a 9-solenoid valve I, a 10-solenoid valve II, a 11-stepping motor, a 12-battery, a 13-circuit board, a 14-connector shell, a 15-catheter connector, a 16-bracket, a 17-injector, an 18-ball screw, a 19-driving wire, a 20-hollow catheter, a 21-cable outer sheath and a 22-monitor connecting cable.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 8, the present invention provides a device for automatically monitoring intracranial pressure by using an inflatable balloon catheter, including a housing assembly 1, an adapter cable 2, a connector assembly 3 and an injection pump assembly 4, wherein a circuit board 13 is fixedly installed in the housing assembly 1, a microprocessor 5 is integrally installed on the circuit board 13, a first electromagnetic valve 9 and a first pressure sensor 6 are fixedly installed on an inner side wall of the bottom of the housing assembly 1, the microprocessor 5 is respectively connected with the first electromagnetic valve 9 and the first pressure sensor 6 through electric wires, the injection pump assembly 4 includes a stepping motor 11, a bracket 16, a ball screw 18 and an injector 17, the microprocessor 5 is connected with the stepping motor 11 through electric wires, the injector 17 is fixedly installed on the top of one end of the bracket 16, the stepping motor 11 is installed on the top of the other end of the bracket 16 through bolts, the ball screw 18 is fixedly installed on a support 16 at a position between the stepping motor 11 and the injector 17, an output shaft of the stepping motor 11 is fixedly connected with a screw rod of the ball screw 18, a plunger of the injector 17 is connected with a nut of the ball screw 18, the support 16 is installed on the inner side wall of the shell assembly 1 through a bolt, one end, close to an output port, of the injector 17 is connected with a first electromagnetic valve 9 through a pipeline, 2 hose connectors are arranged on the first pressure sensor 6, the output port of the injector 17 is connected with one of the hose connectors through a hose, the adapter cable 2 comprises a cable outer sheath 21 and a hollow conduit 20, the hollow conduit 20 is arranged in the cable outer sheath 21, driving wires 19 are further installed in the cable outer sheath 21, the number of the driving wires 19 is 2 pairs, and the other hose connector on the first pressure sensor 6 is connected with one end of the hollow conduit 20, the connector component 3 comprises a connector housing 14 and a conduit connector 15, the conduit connector 15 is fixedly installed at the bottom of the connector housing 14, a second solenoid valve 10 and a second pressure sensor 7 are fixedly installed in the connector housing 14, the microprocessor 5 is respectively connected with the second solenoid valve 10 and the second pressure sensor 7 through two pairs of driving wires 19, 2 hose connectors are arranged on the second pressure sensor 7, the other end of the hollow conduit 20 is connected with one hose connector, the other hose connector is connected with the conduit connector 15, a battery 12 is fixedly installed in the housing assembly 1, the battery 12 is electrically connected with the microprocessor 5, a touch display screen 8 is fixedly installed at the front side of the housing assembly 1, a monitor connecting cable 22 is connected to the bottom of the housing assembly 1, and the microprocessor 5 is electrically connected with the monitor connecting cable 22, the method for automatically monitoring the intracranial pressure by using the balloon catheter comprises the following steps:

the method comprises the following steps: connecting equipment; connecting the monitor connecting cable 22 with an external monitor, and connecting the catheter connector 15 with the balloon catheter;

step two: exhausting gas by the injector; the injector is operated to exhaust through the touch display screen 8, the microprocessor 5 receives signals and then controls the first electromagnetic valve 9 to be opened and the second electromagnetic valve 10 to be closed, so that the injector 17 is communicated with the atmosphere, the stepping motor 11 is controlled to drive the plunger of the injector 17 to move forwards through the ball screw 18 and exhaust the atmosphere, and after the plunger of the injector 17 moves to the forefront end, the first electromagnetic valve 9 is closed, so that the injector 17 is disconnected from the atmosphere;

step three: the balloon catheter is operated to exhaust through the touch display screen 8, the microprocessor 5 receives signals and then controls the first electromagnetic valve 9 to be closed, so that the injector 17 is disconnected from the atmosphere, the second electromagnetic valve 10 is controlled to be opened, so that the air passages of the balloon catheter and the hollow catheter 20 are opened, the plunger of the injector 17 moves towards the rear end until the preset exhaust volume of the balloon catheter is reached, and the second electromagnetic valve 10 is closed, so that the air passages of the balloon catheter and the hollow catheter 20 are closed;

step four: inflating the injector; opening the first electromagnetic valve 9 to communicate the injector 17 with the atmosphere, controlling the stepping motor 11 by the microprocessor 5 to drive the plunger of the injector 17 to move to the rear end through the ball screw 18, and sucking quantitative gas into the injector 17;

step five: injecting gas; closing the first electromagnetic valve 9, disconnecting the communication with the atmosphere, opening the second electromagnetic valve 10, controlling the stepping motor 11 by the microprocessor 5 to drive the plunger of the injector 17 to move forwards through the ball screw 18, and injecting gas with known volume into the balloon catheter through the hollow catheter 20;

step six: monitoring the pressure; closing the second electromagnetic valve 10 to isolate the communication between the syringe 17 and the balloon catheter and the second pressure sensor 7, closing the first electromagnetic valve 9 to disconnect the connection with the atmosphere, filling a certain volume of gas in the balloon, and detecting the air pressure in the balloon catheter by the second pressure sensor 7, wherein the pressure in the balloon is equal to the pressure in the surrounding fluid medium environment according to the Boyle's law (P1V1= P2V2), so that the intracranial pressure value is calculated and the aim of monitoring the intracranial pressure is fulfilled.

In this embodiment, the monitor connection cable 22 is used to connect an external monitor.

Further, the number of the drive wires 19 may be set as desired.

After the technical scheme is adopted, on one hand, no matter the position of a patient or a pressure sensor, the real-time automatic intracranial pressure (ICP) monitoring can be simultaneously realized during drainage of cerebrospinal fluid, the calibration and any subsequent recalibration (return to zero) can be carried out under the condition of not removing a balloon catheter, so that the infection of the patient can be prevented, the safety is high, the inflation/exhaust system can be automatically controlled, gas with a quantitative volume can be accurately injected/exhausted, the measurement accuracy is met, the touch display screen 8 can display numerical values and a waveform diagram, the condition of the patient can be reviewed and predicted by the waveform diagram with a certain period, if the patient needs to carry out nuclear Magnetic Resonance (MRI) examination, the balloon catheter implanted in the patient does not need to be taken out, because the circuit and the sensor component of the technology are arranged at the end 2 of the adapter cable, under the condition of disconnection, the balloon catheter does not contain metal or electric circuit, on the other hand, this utilize the device of the automatic monitoring intracranial pressure of inflatable balloon catheter can connect the monitor and use, also can break away from the monitor and use independently to inside has set up battery 12, can use battery 12 power supply in certain time interval, provides intracranial pressure monitoring for patient in transit.

Preferably, the catheter connector 15 is used for connecting a balloon catheter.

The inner diameter of the hollow conduit 20 is less than Ø 0.020.020

In addition, the apparatus for automatically monitoring intracranial pressure using an inflated balloon catheter provides a pneumatic connection between the balloon catheter and the syringe pump assembly 4 through the hollow catheter 20 having an inner diameter of no more than Ø 0.020.020, so as to minimize the volume of gas required to fill or vent the hollow catheter 20 during the inflation cycle of the hollow catheter 20, and avoid affecting the accuracy of the monitoring.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.