Wireless charging system of ultrasonic scalpel

Abstract

The wireless charging system comprises a first chip and a second chip, in the first chip, a pin SCL1 and a pin SDA1 are connected with an external power supply, a pin SCL4 and a pin SDA4 are connected with a D / A converter, the post-stage of the D / A converter is connected with an oscillating circuit, the D / A converter is enabled to be coupled to a PWM circuit in the oscillating circuit, and the PWM circuit is connected with a power supply. The post-stage of the PWM circuit is coupled with a first driving circuit with a first transistor and a second driving circuit with a second transistor, the first driving circuit is provided with a first output end, and the second driving circuit is provided with a second output end. In the second chip, a pin SCL1 and a pin SDA1 are connected with a current conversion circuit, a pin SCL3 and a pin SDA3 are connected with a trigger, and the trigger is connected with a built-in power supply. The clinical cruising ability of the ultrasonic scalpel containing the energy storage battery is improved, wireless charging can be achieved under the condition that other equipment is not additionally introduced, and the ultrasonic scalpel can achieve the rapid energy supplementing effect in the operation process.

Description

Technical Field

[0001] The invention relates to a minimally invasive device, and in particular to a wireless charging system for an ultrasonic scalpel. Background Art

[0002] In the field of minimally invasive surgery, ultrasonic scalpels are widely used. Compared with other minimally invasive surgical instruments such as high-frequency electric scalpels, their advantages are: less smoke generation, clear surgical field of view, less thermal damage, and the functions of tissue cutting, coagulation and separation, and the cutting and coagulation range can be precisely controlled. Ultrasonic scalpels can be used for laparoscopic and endoscopic surgery, as well as for open surgery. They can be used in coordination with other surgical instruments, such as traditional mechanical scalpels and electric scalpels, or they can be used alone, because they integrate multiple functions such as grasping, shearing, cutting, stripping, and hemostasis. For different surgeries, suitable tool lengths are required to reach the surgical site and easy-to-operate handles and tool combinations are used. The ultrasonic scalpels that already exist on the market with internal energy storage batteries need to replace the battery during use due to battery life issues. When the intensity of clinical use is too high, the battery needs to be replaced frequently, which brings inconvenience to doctors. Summary of the invention

[0003] In order to solve the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a wireless charging system for an ultrasonic surgical knife, which can be charged when the ultrasonic surgical knife is idle, thereby improving the battery life of the ultrasonic surgical knife.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a wireless charging system for an ultrasonic surgical knife, comprising a transmitter system and a receiver system, wherein the transmitter system is arranged in a base and connected to an external power source, and the receiver system is arranged in a handle of the ultrasonic surgical knife and connected to a built-in power source in the handle;

[0005] The transmitting end system includes a first chip provided with an energy transmitting circuit, the first chip has eight pairs of pins, and in the first chip, pin SCL1 and pin SDA1 are connected to the external power supply, pin SCL4 and pin SDA4 are connected to a D / A converter, an oscillation circuit is connected to the rear stage of the D / A converter, so that the D / A converter is coupled to a PWM circuit in the oscillation circuit, the rear stage of the PWM circuit is coupled to a first drive circuit having a first transistor and a second drive circuit having a second transistor, the first drive circuit is provided with a first output end, the second drive circuit is provided with a second output end, and the first transistor, the second transistor, the first drive circuit and the second drive circuit cooperate to form an amplifier circuit;

[0006] The receiving end system includes a second chip provided with an energy receiving circuit, the second chip has eight pairs of pins, and in the second chip, pin SCL1 and pin SDA1 are connected to a current conversion circuit, SCL3 and pin SDA3 are connected to a trigger, and the trigger is connected to the built-in power supply.

[0007] Optionally, in the first chip, pin SCL2 and pin SDA2 are connected to a temperature sensor, so that the first chip obtains temperature data of the surrounding environment through the temperature sensor.

[0008] Optionally, in the first chip, a current sensor is coupled in series between the pin SCL1 and the pin SDA1, so that the first chip obtains current data supplied by an external power supply through the current sensor.

[0009] Optionally, in the first chip, the first driving circuit and the second driving circuit have the same structure;

[0010] The first driving circuit includes a voltage divider, a fixed gain amplifier, a reference diode, a comparator, an oscillator, and a driver, wherein the voltage divider divides the feedback signal received by the first driving circuit, and the voltage divided by the voltage divider is applied to the positive input terminal of the fixed gain amplifier, the negative input terminal of the fixed gain amplifier is coupled to the reference diode with a gap, the output terminal of the fixed gain amplifier is applied to the positive input terminal of the comparator, the negative input terminal of the comparator is connected to the oscillator, the output terminal of the comparator is connected to the input terminal of the driver, and the output terminal of the driver is connected to the first transistor.

[0011] Optionally, a voltage sensor is further coupled between the first output terminal and the second output terminal.

[0012] Optionally, in the second chip, the pin SCL2 and the pin SDA2 are connected to a booster, and an indicator light is connected via the booster;

[0013] The indicator light is connected to the front circuit of the trigger through a phototransistor and a first inverter.

[0014] Optionally, in the second chip, pin SCL4 and pin SDA4 are connected with an AND gate, the positive input of the AND gate is connected to the second inverter, the negative input of the AND gate is connected to the negative output of the trigger, and the positive output of the trigger is connected to the built-in power supply.

[0015] Optionally, in the second chip, a relay is further connected in the circuit of the booster, and the relay is connected to the AND gate via an electromagnet and a third transistor, so that the on and off of the relay is controlled by the AND gate.

[0016] Optionally, a third inverter is provided between the second inverter and the trigger, so that the second inverter is connected to a reset interface of the trigger through the third inverter.

[0017] By adopting the above technical solution, the present invention improves the clinical endurance of the ultrasonic surgical knife containing the energy storage battery. Without introducing other additional equipment, it can be wirelessly charged, so that the ultrasonic surgical knife can achieve the effect of rapid energy replenishment during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the ultrasonic surgical knife of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the base of the present invention;

[0020] Figure 3 is a circuit connection diagram of the energy transmitting circuit of the present invention;

[0021] Figure 4 is a circuit connection diagram of the first drive circuit or the second drive circuit of the present invention;

[0022] Figure 5 It is a circuit connection diagram of the energy receiving circuit of the present invention. DETAILED DESCRIPTION

[0023] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] like Figure 1 and Figure 2 As shown, the present invention discloses a wireless charging system for an ultrasonic surgical knife, and the wireless charging system is used for charging the power source of the wireless ultrasonic knife.

[0026] As we all know, in order to solve the problem of the messy wire harness of the traditional ultrasonic knife during the operation, the wireless ultrasonic knife came into being, but the built-in power capacity of the wireless ultrasonic knife is small, which is to prevent the operator's hand discomfort caused by the excessive weight of the ultrasonic knife during the operation. Under normal circumstances, the standby time of the wireless ultrasonic knife is about 4 hours. Therefore, in a long operation, the operator not only needs to pay attention to the patient's condition, but also needs to pay attention to the remaining power of the wireless ultrasonic knife. At the same time, when the power is insufficient, the power supply needs to be replaced, resulting in many changes. Therefore, the present invention can charge the wireless ultrasonic knife when it is idle without adding other equipment, thereby extending the use time of the wireless ultrasonic knife and realizing its rapid energy replenishment.

[0027] The wireless charging system of the present invention comprises a transmitter system 100 and a receiver system 200. The transmitter system 100 is arranged in a base 300 and connected to an external power source. The receiver system 200 is arranged in the handle of an ultrasonic surgical knife 400 and connected to a built-in power source 500 in the handle. In the present invention, the base 300 and the handle can be paired by magnetic attraction to achieve rapid and accurate placement of the handle. Specifically, three magnetic suction blocks can be respectively arranged in the handle and the base 300. When the handle approaches the base 300, the three pairs of magnetic suction blocks attract each other respectively, thereby completing the pairing of the handle and the base 300.

[0028] Specifically, Figure 3As shown, the transmitting end system 100 includes a first chip 110 provided with an energy transmitting circuit. The first chip 110 may be a chip of the LMG3410R050 model, for example. The first chip 110 has eight pairs of pins. In the first chip 100, the pin SCL1 and the pin SDA1 are connected to an external power supply, and a current sensor 112 is coupled in series in the circuit to measure the current data supplied by the external power supply. The pin SCL2 and the pin SDA2 are connected to a temperature sensor 120, so that the first chip 100 obtains the temperature data of the surrounding environment through the temperature sensor 120. Pin SCL4 and pin SDA4 are connected to the D / A converter 130, and the D / A converter 130 is connected to the oscillating circuit 150 at the rear stage, so that the D / A converter 130 is coupled to the PWM circuit 140 in the oscillating circuit 150, and the rear stage of the PWM circuit 140 is coupled to a first driving circuit having a first transistor 160 and a second driving circuit having a second transistor 170, the first driving circuit is provided with a first output terminal 180, the second driving circuit is provided with a second output terminal 190, and the first transistor 160, the second transistor 170, the first driving circuit and the second driving circuit cooperate to form an amplifier circuit. At pins SCL4 and SDA4, the D / A converter 130 converts digital input into analog output to drive the PWM circuit 140 coupled to the oscillating circuit 150, the PWM circuit 140 provides a first signal to the first driving circuit coupled to the first transistor 160 to drive the first output terminal 180 to output energy, and the PWM circuit 140 also provides a second signal to the second driving circuit coupled to the second transistor 170 to drive the second output terminal 190 to output energy. A voltage sensor 111 is further coupled between the first output terminal 180 and the second output terminal 190 to measure an output voltage between the first output terminal 180 and the second output terminal 190 .

[0029] In the first chip 110, the first driving circuit and the second driving circuit have the same structure. The first driving circuit is taken as an example below to describe the specific structures of the first driving circuit and the second driving circuit in detail.

[0030] like Figure 4As shown, the first driving circuit includes a voltage divider 181, a fixed gain amplifier 182, a reference diode 183, a comparator 184, an oscillator 185 and a driver 186. The voltage divider 181 divides the feedback signal received by the first driving circuit, and the voltage divided by the voltage divider 181 is applied to the positive input terminal of the fixed gain amplifier 182, the negative input terminal of the fixed gain amplifier 182 is coupled to the reference diode 183 with a gap, the output terminal of the fixed gain amplifier 182 is applied to the positive input terminal of the comparator 184, the negative input terminal of the comparator 184 is connected to the oscillator 185, the output terminal of the comparator 184 is connected to the input terminal of the driver 186, and the output terminal of the driver 186 is connected to the first transistor 160.

[0031] like Figure 5 As shown, the receiving end system 200 includes a second chip 210 provided with an energy receiving circuit. The second chip 210 has the same model as the first chip 110 and also has eight pairs of pins. In the second chip 210, pin SCL1 and pin SDA1 are connected to the current conversion circuit 220, pin SCL2 and pin SDA2 are connected to a booster 230, and an indicator light 240 is connected through the booster 230, SCL3 and pin SDA3 are connected to a trigger 250, pin SCL4 and pin SDA4 are connected to an AND gate 260, the positive input end of the AND gate 260 is connected to the second inverter 270, the negative input end of the AND gate 260 is connected to the negative output end of the trigger 250, and the positive output end of the trigger 250 is connected to the built-in power supply 500.

[0032] In the second chip 210, the indicator light 240 is connected to the front circuit of the trigger 250 through the phototransistor 280 and the first inverter 290. In addition, a relay 231 is also connected to the circuit of the booster 230, and the relay 231 is connected to the AND gate 260 through the electromagnet 261 and the third transistor 262, so that the on and off of the relay 231 is controlled by the AND gate 260. A third inverter 251 is also provided between the second inverter 270 and the trigger 250, so that the second inverter 270 is connected to the reset interface of the trigger 250 through the third inverter 251.

[0033] In operation, when the switch contact of the relay 231 is open, no current flows in the circuit of the booster 230, so the indicator light 240 is not powered and does not light up. When the switch contact of the relay 231 is closed, current flows in the circuit of the booster 230, and then the indicator light 240 is powered and lights up.

[0034] In the present invention, a switch 263 is further provided at the front stage of the AND gate 260. When the switch 263 is in the open position, a logic high level is applied to the input terminal of the second inverter 270, and a logic low level is applied to one of the two input terminals of the AND gate 260. Therefore, the output of the AND gate 260 is low level and is cut off by the third transistor 262 to prevent current from flowing through the winding of the electromagnet 261. When the electromagnet 261 is in the power-off state, the switch contact of the relay 231 remains disconnected and prevents current from flowing through the booster 230. The logic low level output of the second inverter 270 is also applied to the third inverter 251, so that the output becomes high and resets the trigger 250 (the trigger can be a D-type trigger). At the same time, the positive output terminal (Q output position) of the trigger 250 outputs a low level to turn off the charging circuit of the built-in power supply 500, and the negative output terminal of the trigger 250 outputs a high level and is applied to the other input terminal of the AND gate 260.

[0035] When the switch 263 is closed, the switch 263 applies a logic low level at the input terminal of the second inverter 270, which applies a logic high level to the other input terminal of the AND gate 260, so that the output level of the AND gate 260 becomes high and turns on the third transistor 262. In the on state, the third transistor 262 conducts and sinks current through the winding of the electromagnet 261 to excite the electromagnet 261 and close the switch contact of the relay 231. As described above, when the switch contact is closed, current passes through the booster 230.

[0036] As described above, when current passes through the booster 230, the booster 230 interacts with the two windings so that the voltage applied to the indicator light 240 is high enough to turn on the indicator light 240. The light emitted by the indicator light 240 turns on the phototransistor 280, which pulls the input of the first inverter 290 low and makes the output of the first inverter 290 high. The high input applied to the CLK position of the trigger 250 has no effect on the output of the positive output terminal of the trigger 250, and the positive output terminal remains at a high level output. Therefore, when the indicator light 240 remains powered on, the charging circuit of the built-in power supply 500 is activated, so that the built-in power supply 500 is replenished.

[0037] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

[0038] Except for the technical features described in the specification, the remaining technical features are known technologies to those skilled in the art. In order to highlight the innovative features of the present invention, the remaining technical features will not be described here in detail.

Claims

1. A wireless charging system for an ultrasonic surgical knife, characterized in that: It includes a transmitting end system and a receiving end system, wherein the transmitting end system is arranged in a base and connected to an external power source, and the receiving end system is arranged in a handle of an ultrasonic surgical knife and connected to a built-in power source in the handle; The transmitting end system includes a first chip provided with an energy transmitting circuit, the first chip has eight pairs of pins, and in the first chip, pin SCL1 and pin SDA1 are connected to the external power supply, pin SCL4 and pin SDA4 are connected to a D / A converter, an oscillation circuit is connected to the rear stage of the D / A converter, so that the D / A converter is coupled to a PWM circuit in the oscillation circuit, the rear stage of the PWM circuit is coupled to a first drive circuit having a first transistor and a second drive circuit having a second transistor, the first drive circuit is provided with a first output end, the second drive circuit is provided with a second output end, and the first transistor, the second transistor, the first drive circuit and the second drive circuit cooperate to form an amplifier circuit; The receiving end system includes a second chip provided with an energy receiving circuit, the second chip has eight pairs of pins, and in the second chip, pin SCL1 and pin SDA1 are connected to a current conversion circuit, SCL3 and pin SDA3 are connected to a trigger, and the trigger is connected to the built-in power supply.

2. The wireless charging system for ultrasonic surgical knife according to claim 1, characterized in that: In the first chip, the pin SCL2 and the pin SDA2 are connected to a temperature sensor, so that the first chip obtains temperature data of the surrounding environment through the temperature sensor.

3. The wireless charging system for ultrasonic surgical knife according to claim 2, characterized in that: In the first chip, a current sensor is coupled in series between the pin SCL1 and the pin SDA1, so that the first chip obtains current data supplied by the external power supply through the current sensor.

4. The wireless charging system for an ultrasonic surgical knife according to claim 3, characterized in that: In the first chip, the first driving circuit and the second driving circuit have the same structure; The first driving circuit includes a voltage divider, a fixed gain amplifier, a reference diode, a comparator, an oscillator, and a driver, wherein the voltage divider divides the feedback signal received by the first driving circuit, and the voltage divided by the voltage divider is applied to the positive input terminal of the fixed gain amplifier, the negative input terminal of the fixed gain amplifier is coupled to the reference diode with a gap, the output terminal of the fixed gain amplifier is applied to the positive input terminal of the comparator, the negative input terminal of the comparator is connected to the oscillator, the output terminal of the comparator is connected to the input terminal of the driver, and the output terminal of the driver is connected to the first transistor.

5. The wireless charging system for an ultrasonic surgical knife according to claim 1, characterized in that: A voltage sensor is also coupled between the first output terminal and the second output terminal.

6. The wireless charging system for an ultrasonic surgical knife according to claim 1, characterized in that: In the second chip, the pin SCL2 and the pin SDA2 are connected to a booster, and an indicator light is connected through the booster; The indicator light is connected to the front circuit of the trigger through a phototransistor and a first inverter.

7. The wireless charging system for an ultrasonic surgical knife according to claim 6, characterized in that: In the second chip, pin SCL4 and pin SDA4 are connected to an AND gate, the positive input of the AND gate is connected to the second inverter, the negative input of the AND gate is connected to the negative output of the trigger, and the positive output of the trigger is connected to the built-in power supply.

8. The wireless charging system for an ultrasonic surgical knife according to claim 7, characterized in that: In the second chip, a relay is further connected in the circuit of the booster, and the relay is connected to the AND gate via an electromagnet and a third transistor, so that the on and off of the relay is controlled by the AND gate.

9. The wireless charging system for an ultrasonic surgical knife according to claim 8, characterized in that: A third inverter is provided between the second inverter and the trigger, so that the second inverter is connected to a reset interface of the trigger through the third inverter.

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