Comprehensive detection device for surgical power system

Abstract

The present invention relates to the field of instrument detection technology, and specifically to a comprehensive detection device applied to a surgical power system, including a host, the host is connected to a handle to be tested and a foot switch to be tested through an interface; the host includes a main control unit: used for performing signal calculations and receiving and sending signal instructions; a handle identification detection module: used for detecting whether the handle can be identified; a handle no-load current detection module: used for judging the no-load current situation of the handle; a foot switch voltage detection module: used for detecting the voltage of the foot switch. The present application can be operated independently, does not need to be connected to other detection equipment, and can be detected by directly connecting the handle and the foot switch to the host, which is easy to operate.

Description

Technical Field

[0001] The present invention relates to the technical field of instrument detection, and in particular to a comprehensive detection device applied to a surgical power system. Background Art

[0002] The surgical power system is a national Class II medical device, mainly used for drilling, milling and grinding of bone tissue in surgical operations. It has the characteristics of high speed and precise operation. As a surgical device, the surgical power system has high requirements for the safety of the equipment. The performance of the accessories of the surgical power system directly affects the final output. Therefore, the inspection of its accessories is crucial. However, there is currently no intuitive detection equipment for the detection of accessories, etc., and the problem can only be reflected indirectly through the parameters of speed and temperature rise. It cannot be ruled out that although the speed and temperature rise meet the requirements, the handle still does not work well.

[0003] Although the rotation speed and other important parameters can reflect the performance of the handle motor to a certain extent, it is impossible to directly observe the specific conditions of the handle motor and other accessories. This will result in the handle motor and other accessories meeting the requirements in a single test, but the performance of the handle motor is not enough to support the needs of the operation. The handle motor may be damaged during the operation or reach its service life and cannot output. In the worst case, the handle motor will heat up, and in the worst case, the treatment of the patient will be delayed, causing medical accidents.

[0004] The detection method is more complicated. For the detection of accessories such as handles, each detection has different detection instruments. It is necessary to connect to the host first, and then control the operation of the handle by the host to perform the detection. Many devices are used, which consumes manpower and material resources. In addition, the comprehensive performance is also poor. Common detection devices can only detect the handle or the foot switch, and there is no device that can detect the handle and the foot switch.

[0005] A multifunctional test tool for a surgical power system disclosed in publication number CN114646836A detects the handle rotation speed, matching degree, and button functions, but lacks detection of the handle motor. As the core of the handle, the performance of the handle motor directly affects the operation effect of the operation, and the handle motor needs to be sterilized by high-temperature steam during use, which is bound to have a certain impact on the handle motor. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a comprehensive detection device applied to a surgical power system.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: the comprehensive detection device applied to the surgical power system comprises a host, and the host is connected to the handle to be tested and the foot switch to be tested through an interface;

[0008] The host comprises a main control unit: used for performing signal operations and receiving and sending signal instructions;

[0009] Handle recognition detection module: used to detect whether the handle can be recognized;

[0010] Handle no-load current detection module: used to determine the no-load current of the handle;

[0011] Foot switch voltage detection module: used to detect the voltage of the foot switch.

[0012] The host is provided with a touch screen for human-computer interaction and displaying the detection results.

[0013] The handle identification detection module includes an input terminal ID connected to the handle, the input terminal ID is connected to a 5V power supply and a photoelectric coupler through a current limiting resistor, the photoelectric coupler is connected to an output terminal M_DI, a 3.3V power supply is connected between the photoelectric coupler and the output terminal M_DI through a current limiting resistor, and is grounded through a filter capacitor, and the output terminal M_DI is connected to the main control unit.

[0014] The handle no-load current detection module includes a Hall sensor, which is arranged in the handle 2. The Hall sensor is connected to the three phases U, V, and W of the handle motor, and the Hall sensor is connected to the operational amplifier and the main control unit.

[0015] It also includes a handle speed error detection module, which is used to calculate the error value between the preset speed and the actual speed of the handle;

[0016] The handle speed error detection module includes a speed test sensor, which is connected to the main control unit. The speed test sensor collects the actual output speed of the handle and inputs it into the main control unit. The main control unit performs error calculation based on the preset speed and the collected actual output speed, and displays the calculation result on the touch screen.

[0017] The foot switch voltage detection module comprises a differential amplifier circuit, a voltage-reducing circuit and a follower which are connected in sequence.

[0018] The voltage of the foot switch is 5V.

[0019] The differential amplifier circuit includes resistors R20 and R22 connected in series, one end of the resistor R20 is connected to the foot switch, the resistor R22 is also connected to one end of the resistor R24, and the other end of the resistor R24 ​​is grounded;

[0020] It also includes resistors R21 and R23 connected in series, one end of the resistor R21 is grounded, the resistor R23 is connected to one end of the resistor R25, and the resistor R25 is connected to the step-down circuit;

[0021] The resistor R22 and the resistor R23 are connected to the step-down circuit via a follower.

[0022] The step-down circuit includes a step-down resistor R26 and a step-down resistor R27, one end of the step-down resistor R26 is connected to the differential amplifier circuit through a follower, the other end of the step-down resistor R26 is connected to one end of the step-down resistor R27, one end of the step-down resistor R27 is connected to another follower, the other end of the step-down resistor R27 is grounded, and the other follower is connected to the main control unit.

[0023] The differential amplifier circuit has a multiple of 1.

[0024] Compared with the prior art, the present invention has the following beneficial effects: the present application can be operated independently, does not need to be connected to other detection equipment, and can be detected by directly connecting the handle and foot switch to the host, which is easy to operate. It is convenient for hospitals and enterprises to regularly check accessories such as handles and foot switches to ensure the performance of the equipment and the smooth progress of the surgical process. Moreover, the present application can detect both the handle and the foot switch.

[0025] This application can detect the performance of the handle motor in the handle. The detection method is simple. You only need to connect the aviation plug of the handle to the host interface. The host can detect the operating parameters of the handle, such as the no-load current of the handle, the Hall condition of the handle motor, the overall operation of the handle, and the error value between the actual speed of the handle and the set speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a circuit diagram of a handle identification and detection module of the present invention;

[0028] Figure 3 This is a partial circuit diagram of the handle no-load current detection module of the present invention;

[0029] Figure 4 This is a circuit diagram of a foot switch voltage detection module of the present invention.

[0030] In the figure: 1. host; 2. handle; 3. foot switch; 4. touch screen. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Reference Figure 1-Figure 4 , a comprehensive detection device applied to a surgical power system comprises a host 1, wherein the host 1 is connected to a handle 2 to be tested and a foot switch 3 to be tested through an interface;

[0033] The host 1 includes a main control unit: used for performing signal operations and receiving and sending signal instructions;

[0034] Handle recognition detection module: used to detect whether the handle can be recognized;

[0035] Handle no-load current detection module: used to determine the no-load current of the handle;

[0036] Foot switch voltage detection module: used to detect the voltage of the foot switch.

[0037] The host 1 is provided with a touch screen 4 for human-computer interaction and displaying detection results.

[0038] The handle identification detection module includes an input terminal ID connected to the handle 2, the input terminal ID is connected to a 5V power supply and a photoelectric coupler through a current limiting resistor, the photoelectric coupler is connected to an output terminal M_DI, a 3.3V power supply is connected between the photoelectric coupler and the output terminal M_DI through a current limiting resistor, and grounded through a filter capacitor, and the output terminal M_DI is connected to the main control unit. Figure 2 Take one of the circuits as an example. The input terminal ID1, current limiting resistors R140 and R144 are connected to a 5V power supply and a photocoupler. The output M_ID1 is grounded through a filter capacitor C104 and connected to a 3.3V power supply through a current limiting resistor R148. When the input terminal ID1 is high (>5V), the photocoupler is turned off, pins 3 and 4 are turned off, and the output M_ID1 is high. When the input ID1 is low (<5V), the photocoupler is turned on, pins 3 and 4 are turned on, and the output M_ID1 is low. The same is true for other circuits.

[0039] When the handle is connected to the host, the type of handle can be automatically identified and the corresponding handle type can be displayed on the interface. This means that the handle has been successfully identified and the next step of detection can be performed. If the interface does not respond after the handle is connected, it means that there is a problem with the handle identification part and this part needs to be repaired. There is a test button for the handle on the touch screen. Press the button and the handle starts running. At this time, the main control unit collects the data of the handle operation. After a fixed running time, the handle automatically stops. After the handle stops, the detection result of the handle is displayed on the interface.

[0040] The handle no-load current detection module includes a Hall sensor, which is arranged in the handle 2, and is connected to the handle motor U, V, W three-phase, and is connected to the operational amplifier and the main control unit. Figure 3, taking one phase of the handle motor as an example, after the handle motor is connected to the host 1, the host 1 drives the handle motor to run through the MOS tube. During operation, the current value in the MOS tube is collected and input into the Hall sensor. After the Hall sensor calculates and outputs an analog quantity, the analog quantity Iu is formed after passing through the operational amplifier. Then Iu is input into the main control unit and compared with the current range preset in the main control unit. If it is greater than the preset current range, it means that the current value of the handle motor phase is abnormal and does not meet the requirements, and the current abnormality information is displayed on the touch screen 4. The remaining two paths are similar. The present application achieves the purpose of judging the operating status of the handle motor by judging whether the current value of the handle motor in the handle exceeds expectations.

[0041] In a common handle motor driving circuit, U' is directly connected to U. The present invention adds the current detection circuit between U' and U to detect the no-load current of the handle motor.

[0042] It also includes a handle speed error detection module, which is used to calculate the error value between the preset speed and the actual speed of the handle 2;

[0043] The handle speed error detection module includes a speed test sensor, which is connected to the main control unit. The speed test sensor collects the actual output speed of the handle and inputs it into the main control unit. The main control unit performs error calculation based on the preset speed and the collected actual output speed, and displays the calculation result on the touch screen 4.

[0044] The actual output speed of the handle in the present application is collected by a speed test sensor, and the collected actual output no-load speed is input into the main control unit. The error value is calculated with the speed value set by the program (i.e., the preset speed), and the calculated error value is directly displayed on the touch screen. The no-load speed is a necessary detection item for the surgical power system. The general no-load speed detection can only be performed separately, which is time-consuming and laborious. The present invention detects the speed and the internal conditions of the handle motor together, and the detection can be completed by running the device once.

[0045] Reference Figure 4 The foot switch voltage detection module includes a sub-amplifier circuit, a step-down circuit and a follower.

[0046] The voltage of the foot switch is 5V.

[0047] The differential amplifier circuit includes resistors R20 and R22 connected in series, one end of the resistor R20 is connected to the foot switch, the resistor R22 is also connected to one end of the resistor R24, and the other end of the resistor R24 ​​is grounded;

[0048] It also includes resistors R21 and R23 connected in series, one end of the resistor R21 is grounded, the resistor R23 is connected to one end of the resistor R25, and the resistor R25 is connected to the step-down circuit;

[0049] The resistor R22 and the resistor R23 are connected to the step-down circuit via a follower. The differential amplifier circuit collects the voltage value between the foot switch and the ground.

[0050] The resistance values ​​of the resistors R20, R21, R22, and R23 are the same, and the resistance values ​​of the resistors R24 and R25 are the same and are twice the resistance value of R20. The amplification factor of the differential amplifier circuit is 1. It plays a role in eliminating common-mode noise. The differential amplifier circuit is mainly used to eliminate common-mode noise, and does not play a decompression role here, making the collected signal more stable and reliable, and improving the accuracy of detection.

[0051] The step-down circuit includes a step-down resistor R26 and a step-down resistor R27, one end of the step-down resistor R26 is connected to the differential amplifier circuit through a follower, the other end of the step-down resistor R26 is connected to one end of the step-down resistor R27, one end of the step-down resistor R27 is connected to another follower, the other end of the step-down resistor R27 is grounded, and the other follower is connected to the main control unit.

[0052] The foot switch can achieve stepless speed regulation of the handle motor by adjusting the voltage of the pedal. Therefore, the voltage value of the foot switch directly affects the output of the handle motor, so the pedal of the foot switch needs to be tested regularly.

[0053] The signal of the foot switch is input by VJT and passes through a differential amplifier circuit with a multiple of 1. The function of the differential circuit is to eliminate common mode noise and does not play a role in reducing voltage. The voltage is reduced through two voltage-reducing resistors R26 and R27. Then the voltage is input to the follower, which has a large input impedance and a small output impedance, which is equivalent to adding a large isolation resistor between the host and the foot voltage. On the one hand, it protects the host pins, and on the other hand, it reduces the sampling error brought by the impedance to the main control unit. Finally, the collected ad value is input to the main control unit and displayed on the display part of the touch screen to realize the voltage detection of the foot switch.

[0054] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention specification under the inventive concept of the present invention, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A comprehensive detection device for a surgical power system, characterized in that: The device comprises a host (1), wherein the host (1) is connected to a handle (2) to be tested and a foot switch (3) to be tested via an interface; The host (1) comprises Main control unit: used to perform signal operations and receive and send signal instructions; Handle recognition detection module: used to detect whether the handle can be recognized; Handle no-load current detection module: used to determine the no-load current of the handle; Foot switch voltage detection module: used to detect the voltage of the foot switch.

2. The comprehensive detection device for surgical power system according to claim 1, characterized in that: The host (1) is provided with a touch screen (4) for performing human-computer interaction and displaying detection results.

3. The comprehensive detection device for surgical power system according to claim 1, characterized in that: The handle identification detection module comprises an input terminal ID connected to the handle (2), the input terminal ID is connected to a 5V power supply and a photoelectric coupler via a current limiting resistor, the photoelectric coupler is connected to an output terminal M_DI, a 3.3V power supply is connected between the photoelectric coupler and the output terminal M_DI via a current limiting resistor, and is grounded via a filter capacitor, and the output terminal M_DI is connected to the main control unit.

4. The comprehensive detection device for surgical power system according to claim 1, characterized in that: The handle no-load current detection module comprises a Hall sensor, which is arranged in the handle (2), connected to the three phases U, V and W of the handle motor, and connected to the operational amplifier and the main control unit.

5. The comprehensive detection device for surgical power system according to claim 1, characterized in that: It also includes a handle speed error detection module, which is used to calculate the error value between the preset speed and the actual speed of the handle (2); The handle speed error detection module comprises a speed test sensor, which is connected to the main control unit. The speed test sensor collects the actual output speed of the handle and inputs it into the main control unit. The main control unit calculates the error based on the preset speed and the collected actual output speed, and displays the calculation result on the touch screen (4).

6. The comprehensive detection device for surgical power system according to claim 1, characterized in that: The foot switch voltage detection module includes a differential amplifier circuit, a step-down circuit and a follower.

7. The comprehensive detection device for surgical power system according to claim 6, characterized in that: The voltage of the foot switch is 5V.

8. The comprehensive detection device for surgical power system according to claim 6, characterized in that: The differential amplifier circuit includes resistors R20 and R22 connected in series, one end of the resistor R20 is connected to the foot switch, the resistor R22 is also connected to one end of the resistor R24, and the other end of the resistor R24 ​​is grounded; It also includes resistors R21 and R23 connected in series, one end of the resistor R21 is grounded, the resistor R23 is connected to one end of the resistor R25, and the resistor R25 is connected to the step-down circuit; The resistor R22 and the resistor R23 are connected to the step-down circuit via a follower.

9. The comprehensive detection device for surgical power system according to claim 6, characterized in that: The step-down circuit includes a step-down resistor R26 and a step-down resistor R27, one end of the step-down resistor R26 is connected to the differential amplifier circuit through a follower, the other end of the step-down resistor R26 is connected to one end of the step-down resistor R27, one end of the step-down resistor R27 is connected to another follower, the other end of the step-down resistor R27 is grounded, and the other follower is connected to the main control unit.

10. The comprehensive detection device for surgical power system according to claim 8, characterized in that: The differential amplifier circuit has a multiple of 1.

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