阅读说明：本技术 手术动力系统的安全防护方法 (Safety protection method of operation power system ) 是由 陈保明 丁慧 倪敏健 龚光钊 于 2021-07-29 设计创作，主要内容包括：本发明公开了一种手术动力系统的安全防护方法及控制器,该方法包括:在手术动力系统启动后,进行自检及初始化；检测手术动力系统的驱动开关的当前状态是否为预设待机状态；当当前状态为预设待机状态时,则根据手术动力系统的手柄的连接状态,驱动手柄运行。本发明的手术动力系统的安全防护方法,使得在手术动力系统在发生故障或者非常规操作的情况下,能够有效地避免患者和操作者受到伤害的风险。(The invention discloses a safety protection method and a controller of a surgery power system, wherein the method comprises the steps of carrying out self-checking and initialization after the surgery power system is started; detecting whether the current state of a driving switch of a surgery power system is a preset standby state or not; and when the current state is a preset standby state, driving the handle to operate according to the connection state of the handle of the operation power system. The safety protection method of the operation power system can effectively avoid the risk of injury to patients and operators under the condition that the operation power system is in failure or is in unconventional operation.)

1. A method of safety protection for a surgical power system, comprising:

after the operation power system is started, self-checking and initialization are carried out;

detecting whether the current state of a driving switch of the operation power system is a preset standby state or not;

and when the current state is the preset standby state, determining whether to allow the handle to be driven to operate or not according to the connection state of the handle of the operation power system.

2. The method for safety protection of a surgical power system according to claim 1, wherein the step of detecting whether the current state of a driving switch of the surgical power system is a preset standby state comprises:

after the driving switch is detected to be connected to the operation power system, judging whether the driving switch is connected to the operation power system for the first time;

if so, judging whether a driving signal of the driving switch is lower than a driving threshold value for driving the handle to operate;

if so, determining that the current state of the driving switch is the preset standby state.

3. A method of safeguarding a surgical power system according to claim 2, wherein the state of the handle is set to a handle-locked state when it is determined that the drive signal is above a drive threshold of the handle.

4. A method of safeguarding a surgical power system according to claim 2 or 3, further comprising, prior to the step of determining whether the drive switch is first connected to the surgical power system:

carrying out debouncing processing on a connection signal of the driving switch connected to the operation power system;

judging whether the driving switch is connected to the operation power system or not according to the connection signal subjected to the debouncing treatment;

and if not, setting the state of the driving switch to be a switch off state.

5. A method of safeguarding a surgical power system according to claim 4, wherein the state of the drive switch is set to a switch open state when the connection signal is not detected.

6. The method of claim 1, wherein the step of determining whether to allow the handle of the surgical power system to be driven according to the connection status of the handle comprises:

detecting whether the handle is connected to the operation power system for the first time;

if so, judging whether a driving signal of the driving switch is lower than a driving threshold value for driving the handle to operate;

if so, judging that the current state of the driving switch is the preset standby state, setting the state of the handle to be a handle unlocking state, allowing the handle to be driven to operate,

and if not, setting the state of the handle as a handle locking state.

7. A method of safeguarding a surgical power system according to claim 6, wherein the state of the handle is set to a handle disconnected and locked state upon detection of non-connection of the handle to the surgical power system.

8. A method of safeguarding a surgical power system according to claim 1, wherein said step of performing self-test and initialization after starting the surgical power system comprises:

initializing a port and a variable of an analog-digital converter after the operation power system is started;

and detecting whether the driving signal of the driving switch completes analog-to-digital conversion.

9. A method of safeguarding a surgical power system according to claim 8, wherein the step of initializing the ports and variables of the analog-to-digital converter after the start-up of the surgical power system further comprises:

and setting the state of the driving switch to be a switch off state, and setting the state of the handle to be a handle off state.

10. A controller comprising a memory and a processor, the memory storing a computer program that when executed by the processor is capable of implementing the steps of the method of safety shielding of a surgical power system according to any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of motor control, in particular to a safety protection method and a controller for a surgical power system.

Background

In spinal surgery, orthopaedics and neurosurgery, a surgical knife is required to be rotated by a surgical power system to perform grinding and cutting operation on diseased bone tissues and the like in a planing and grinding mode and open an inner channel, so that a tool bit is required to be driven to rotate. Therefore, the control host and the handle for transmitting power to the tool bit are required to be arranged, the control host drives the tool bit and realizes control through controlling the motor arranged in the power handle, and the operation process is smoothly completed.

The operation power system is generally controlled by a driving switch, and a control host provides electric power for a motor to drive a cutter to drill, mill, grind and the like bone tissues. Therefore, the signal input to drive the switch is critical to the safety of the entire system. In the case of a single fault condition or abnormal operation, no harm should be caused to the patient or operator. Therefore, how to ensure the safety of patients and operators in a single fault state or in an abnormal operation condition becomes a technical problem to be solved urgently.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a safety protection method and a controller for a surgical power system, so as to solve the problem that the safety of a patient and an operator is damaged when the surgical power system is in a fault state or in an unconventional operation condition.

In order to solve the technical problem, according to an aspect of the present invention, there is provided a safety protection method for a surgical power system, including:

after the operation power system is started, self-checking and initialization are carried out;

detecting whether the current state of a driving switch of the operation power system is a preset standby state or not;

and when the current state is the preset standby state, determining whether to allow the handle to be driven to operate or not according to the connection state of the handle of the operation power system.

Further, the step of detecting whether the current state of the driving switch of the surgical power system is a preset standby state includes:

after the driving switch is detected to be connected to the operation power system, judging whether the driving switch is connected to the operation power system for the first time;

if so, judging whether a driving signal of the driving switch is lower than a driving threshold value for driving the handle to operate;

if so, determining that the current state of the driving switch is the preset standby state.

Further, when it is determined that the drive signal is higher than the drive threshold of the handle, the state of the handle is set to a handle lock state.

Further, before the step of determining whether the driving switch is connected to the operation power system for the first time, the method further comprises:

carrying out debouncing processing on a connection signal of the driving switch connected to the operation power system;

judging whether the driving switch is connected to the operation power system or not according to the connection signal subjected to the debouncing treatment;

and if not, setting the state of the driving switch to be a switch off state.

Further, when the connection signal is not detected, the state of the drive switch is set to a switch off state.

Further, the step of determining whether to allow the handle of the operation driven according to the connection state of the handle of the operation power system comprises the following steps:

detecting whether the handle is connected to the operation power system for the first time;

if so, judging whether a driving signal of the driving switch is lower than a driving threshold value for driving the handle to operate;

if yes, the current state of the driving switch is judged to be the preset standby state, the state of the handle is set to be a handle unlocking state, and the handle is allowed to be driven to operate.

And if not, setting the state of the handle as a handle locking state.

Further, the state of the handle is set to a handle disconnected and locked state when it is detected that the handle is not connected to the surgical power system.

Further, the step of self-checking and initializing after the operation power system is started comprises:

initializing a port and a variable of an analog-digital converter after the operation power system is started;

and detecting whether the driving signal of the driving switch completes analog-to-digital conversion.

Further, before the step of initializing the ports and variables of the analog-to-digital converter after the surgical power system is started, the method further includes:

and setting the state of the driving switch to be a switch off state, and setting the state of the handle to be a handle off state.

According to another aspect of the present invention, there is provided a controller comprising a memory and a processor, the memory storing a computer program which, when executed by the processor, is capable of implementing the steps of the method of safety protection of a surgical power system according to any one of the above.

Compared with the prior art, the invention has obvious advantages and beneficial effects. By means of the technical scheme, the safety protection method and the controller of the operation power system can achieve considerable technical progress and practicability, have industrial wide utilization value and at least have the following advantages:

by the safety protection method of the operation power system, the risk that a patient and an operator are injured can be effectively avoided under the condition that the operation power system is in failure or is in unconventional operation.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

FIG. 1 illustrates a flow diagram of a method of safety shielding a surgical power system in accordance with an embodiment of the present invention;

FIG. 2 is a schematic flow chart illustrating self-testing and initialization after the surgical power system is started, according to an embodiment of the present invention;

FIG. 3 is a schematic flow chart illustrating the detection of the current state of the drive switch according to one embodiment of the present invention;

fig. 4 is a schematic flow chart illustrating the process of detecting the connection state of the handle according to an embodiment of the present invention.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be given to the specific embodiments and effects of a safety protection method and a controller of a surgical power system according to the present invention with reference to the accompanying drawings and preferred embodiments.

The embodiment of the invention provides a safety protection method of a surgery power system, which comprises the following steps as shown in figure 1:

and step S10, after the operation power system is started, self-checking and initialization are carried out.

In particular, a malfunction or sudden power failure may occur during use of the surgical power system. After the above-mentioned situation occurs, after the power-on after maintenance or after the power-on again, the analog-to-digital converter in the control circuit of the operation power system needs to be self-checked and initialized.

In one embodiment, as shown in fig. 2, after the surgical power system is started, the steps of performing self-checking and initialization include:

step S101, setting the state of the driving switch as a switch off state, and setting the state of the handle as a handle off state.

During the operation of the operation power system, the situation that the power is powered on again after sudden power failure happens. Under the condition, a driving switch of the operation power system is still in a driving state, and at the moment, if the handle is directly driven to drive the cutter to rotate, unnecessary damage is easily caused to a patient or an operator. Therefore, after the operation power system is started, the state of the drive switch is firstly set to the switch-off state, and the state of the handle is set to the handle-off state. After the setting is finished, under the condition of suddenly electrifying, even if the driving switch is in a driving state, the handle still cannot drive the cutter to rotate. The risk of injury to the patient and the operator is effectively avoided.

Step S102, after the operation power system is started, initializing the port and the variable of the analog-digital converter.

Step S103, detecting whether the driving signal of the driving switch completes analog-to-digital conversion.

It is known that in order to enable control of the surgical power system by the drive switch, it is necessary to convert the analog signal generated upon driving the drive switch into a digital signal. Therefore, after the operation power system is started, whether the analog-to-digital conversion of the driving signal generated by the driving switch is completed or not is detected. Random readings in the registers before the analog-to-digital conversion is complete may result in erroneous decisions. Therefore, if the detection analog-to-digital conversion is not completed, the detection is continued until the detection is completed, and then step S20 is executed.

And step S20, detecting whether the current state of a driving switch of the operation power system is a preset standby state.

Specifically, after the self-checking and initialization of the surgical power system are completed, it is necessary to determine whether the handle driving of the surgical power system can be started according to the current state of the driving switch of the surgical power system. Namely, whether the current state of the driving switch is a preset standby state capable of driving the handle to operate is judged. If the current state of the driving switch reaches the preset standby state, step S30 is executed.

In one embodiment, as shown in fig. 3, the step of detecting whether the current state of the driving switch of the surgical power system is the preset standby state includes:

step S201, whether a connection signal that the driving switch is connected to the operation power system is detected, if so, step S202 is executed, otherwise, step S203 is executed.

And step S202, judging whether the driving switch is connected to the operation power system for the first time. If so, step S204 is executed, otherwise, no processing is performed.

In step S203, the state of the drive switch is set to the switch off state.

And step S204, carrying out debouncing processing on the connection signal of the drive switch connected to the operation power system.

And step S205, judging whether the driving switch is connected to the operation power system or not according to the connection signal after the debounce processing. If yes, go to step 206, otherwise go to step S207.

And step S206, judging whether the driving signal of the driving switch is lower than the driving threshold value for driving the handle to operate. If yes, go to step S208, otherwise go to step S209.

In step S207, the state of the drive switch is set to the switch off state.

In step S208, it is determined that the current state of the driving switch is the preset standby state.

In step S209, the state of the handle is set to the handle lock state.

Specifically, after the self-checking and initialization of the surgical power system are completed, a connection signal generated when whether the driving switch is connected to the surgical power system is detected is judged. If the connection signal is not detected, the connection signal indicates that the driving switch is not connected to the operation power system, and at the moment, the state of the driving switch is set to be a switch disconnection state. In the off state of the switch, the handle is not driven to operate even when the operation power system receives a driving signal. So as to prevent the driving signal generated by the equipment failure from driving the handle to operate.

When the connection signal is detected, whether the driving switch is connected to the operation power system for the first time is continuously judged. When the driving switch is judged not to be connected to the operation power system for the first time, the operation of the operation power system is normally executed, namely, the operation of the handle is controlled according to the driving signal of the driving switch. Of course, it is still necessary to further determine whether the handle has been connected to the surgical power system. When the driving switch is judged to be connected to the operation power system for the first time, the connection signal generated when the driving switch is connected to the operation power system needs to be further subjected to debouncing processing. So as to remove the interference generated on the connection signal by various external factors.

And after the connection signal is subjected to debouncing processing, continuously judging whether the drive switch is connected to the operation power system according to the connection signal subjected to debouncing processing. And when the driving switch is judged not to be connected to the operation power system according to the connection signal after the debounce processing, setting the state of the driving switch to be a switch off state.

And after the driving switch is judged to be connected to the operation power system according to the connection signal after the debounce processing, judging whether the driving signal of the driving switch is lower than a driving threshold value for driving the handle to operate. The drive threshold for operation of the drive handle is the minimum value of the drive signal that can be used to operate the drive handle. When the driving signal is higher than the driving threshold, it indicates that the operator is driving the handle to operate the surgical power system before a fault or power failure, and the pressing of the driving switch is still not stopped after the fault or power failure, and at this time, if the handle is still driven to operate after the fault is removed or the power is suddenly powered on, extra damage is easily caused to the patient and the operator. Therefore, when the driving signal is higher than the driving threshold value, the state of the handle is set to be the handle locking state, namely, the handle cannot be driven to operate after the driving signal reaches the starting threshold value.

And if the driving signal is lower than the driving threshold value, judging that the current state of the driving switch is a preset standby state. At this time, if the handle is connected to the operation power system, the operation of the handle can be driven by the driving switch.

And step S30, when the current state is the preset standby state, determining whether to allow the driving handle to run according to the connection state of the handle of the operation power system.

When the current state of the driving switch is the preset standby state, that is, the current state of the driving switch reaches the state of the driving handle running, it is further required to judge whether the handle is connected to the operation power system for the first time.

And if the handle is not connected to the operation power system, the state of the handle is adjusted to be a handle disconnection and locking state.

When the handle is detected to be connected to the operation power system for the first time, the connection state of the driving switch still needs to be further judged. When the current state of the driving switch is a preset standby state, setting the state of the handle to be a handle unlocking state, and allowing the handle to be driven to operate; otherwise, the handle locking state of the handle is maintained.

In one embodiment, as shown in FIG. 4, the step of detecting the connection status of the handle of the surgical power system comprises:

step S401, judging whether a connection signal that the handle is connected to the operation power system is detected, if so, executing step S402, otherwise, executing step S403.

Step S402, judging whether the handle is connected to the operation power system for the first time, if so, executing step S404, otherwise, executing step S406.

In step S403, the state of the handle is set to the handle off state.

And step S404, carrying out debouncing processing on a connection signal of the handle connected to the operation power system.

And S405, judging whether the handle is connected to the operation power system or not according to the connection signal of the debounce processing, if so, executing S406, and otherwise, executing S407.

In step S406, the state of the handle is set to the handle connection state.

In step S407, the state of the handle is set to the handle lock state.

Embodiments of the present invention provide a controller, which includes a memory and a processor, where the memory stores a computer program, and the program, when executed by the processor, can implement the steps of the safety protection method of the surgical power system according to any of the above embodiments.

The invention also provides a drive switch signal detection circuit which adopts the suspension grounding technology. The drive switch signal detection circuit isolates the drive switch signal from the controller through a DC/DC power supply and an optocoupler.

Specifically, the analog signal of the driving switch is isolated through a linear optical coupler, the on-off switch is isolated through a digital optical coupler, and the driving switch is connected with the detection signal and is also isolated through the digital optical coupler. These signals are connected to the controller, with the analog signal driving the switch connected to the a/D input of the controller (analog to digital conversion).

The safety protection method of the operation power system realizes that the motor and the cutter of the handle cannot move even if the driving switch is stepped or pressed down under the condition that the power supply is recovered after abnormal power failure; when the driving switch is stepped or pressed down, the driving switch connector is plugged and pulled out, and the motor and the cutter of the handle cannot move. When the handle connector is inserted or pulled down by pressing or depressing the drive switch, the motor and the cutter of the handle do not move. And when the driving switch is damaged and the output is abnormal, the motor and the cutter cannot move by connecting the driving switch. Therefore, the risk of injury to the patient and the operator can be effectively avoided under the condition that the operation power system is in failure or is in unconventional operation.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.