CN115054322A

CN115054322A - Dual-mode power supply circuit, energy instrument for operation and ultrasonic operation system

Info

Publication number: CN115054322A
Application number: CN202210577759.0A
Authority: CN
Inventors: 张军; 吴智鑫
Original assignee: Ansukang Medical Suzhou Co ltd
Current assignee: Ansukang Medical Suzhou Co ltd
Priority date: 2022-05-25
Filing date: 2022-05-25
Publication date: 2022-09-16
Anticipated expiration: 2042-05-25
Also published as: CN115054322B

Abstract

The invention discloses a dual-mode power supply circuit, an energy instrument for operation and an ultrasonic operation system, wherein the circuit comprises an external power switch, a battery, a power consumption circuit module and an operation switch, wherein the battery is electrically connected with the drain electrode of a first transistor, the grid electrode of the first transistor is connected with the external power switch, the source electrode of the first transistor is electrically connected with the grid electrode of a third transistor through the operation switch, the grid electrode of the second transistor is simultaneously electrically connected with the drain electrode of the third transistor and the source electrode of the first transistor, the source electrode of the third transistor is grounded, the first transistor and the second transistor are configured to be conducted when the grid electrode voltage is lower than a corresponding threshold value, and the third transistor is configured to be conducted when the grid electrode voltage is higher than the corresponding threshold value; when the external power switch is switched off and the operation switch is switched on, the battery supplies electric energy to the power consumption circuit module through the first transistor and the second transistor; when the external power switch is turned on, the external power supply supplies power to the power consumption circuit module through the external power switch and the second transistor.

Description

Dual-mode power supply circuit, energy instrument for operation and ultrasonic operation system

Technical Field

The invention relates to the field of medical equipment, in particular to a dual-mode power supply circuit, an energy instrument for operation and an ultrasonic operation system.

Background

Before an operation, hospital equipment needs to prepare equipment, consumables and the like for the operation, the service life of an energy instrument such as an ultrasonic scalpel needs to be confirmed, and for an energy instrument with a remaining available number of times of 0, the available energy instrument needs to be replaced before the operation is started.

In the prior art, to check the state of the equipment, such as the number of times of use, an external power supply needs to be switched on to start the ultrasonic scalpel, and the wiring operation is troublesome; to solve this problem, chinese patent No. CN207804334U discloses a cordless ultrasonic surgical system with a built-in battery, but the built-in battery is turned on to start the ultrasonic scalpel to check the device status in a non-surgical stage, which causes a loss of electric power. Moreover, the wireless cable ultrasonic operation system is expensive, and the battery endurance time and the stability of output electric energy cannot be compared with those of a wired ultrasonic operation system using external alternating current, so that the conventional wired ultrasonic operation system is a mainstream instrument product.

Disclosure of Invention

It is an object of the invention to provide a more stable solution for starting up a local power consuming circuit without an external power supply.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a dual-mode power supply circuit comprises an external power switch, a battery, a power consumption circuit module, an operation switch, a first transistor, a second transistor and a third transistor, wherein the battery is electrically connected with the drain electrode of the first transistor, the grid electrode of the first transistor is connected with the external power switch, the source electrode of the first transistor is electrically connected with the grid electrode of the third transistor through the operation switch, the grid electrode of the second transistor is simultaneously and electrically connected with the drain electrode of the third transistor and the source electrode of the first transistor, and the source electrode of the third transistor is grounded, wherein the first transistor and the second transistor are configured to be conducted when the grid voltage is lower than a corresponding preset voltage threshold value, and the third transistor is configured to be conducted when the grid voltage is higher than a corresponding preset voltage threshold value;

when the external power switch is turned off and the operation switch is turned on, the battery supplies power to the power consumption circuit module through the first transistor and the second transistor; when the external power switch is turned on, an external power supply supplies electric energy to the power consumption circuit module through the external power switch and the second transistor.

Further, the external power switch is also electrically connected to the gate of the third transistor.

Furthermore, the dual-mode power supply circuit also comprises a dual-base diode, two bases of the dual-base diode are respectively connected with the external power switch and the battery, and an emitter of the dual-base diode is electrically connected with a source electrode of the second transistor;

and the voltage obtained by the conduction of the external power switch is higher than the voltage of the positive electrode of the battery.

Furthermore, the dual-mode power supply circuit further comprises a dual-base diode, two bases of the dual-base diode are respectively connected with the operation switch and the enabling port of the power consumption circuit module, and an emitter of the dual-base diode is simultaneously electrically connected with the external power switch and the grid electrode of the third transistor.

Further, the dual-mode power supply circuit further comprises a fourth transistor, the fourth transistor is configured to be turned on when the gate voltage is higher than the corresponding preset voltage threshold, and the gate of the fourth transistor is connected with the GPIO port of the power consumption circuit module;

the drain electrode of the fourth transistor is connected with the external power switch, and the source electrode of the fourth transistor is electrically connected with the source electrode of the second transistor.

Furthermore, the dual-mode power supply circuit further comprises other power consumption modules, the other power consumption modules are connected with the external power switch, and the power consumption of the other power consumption modules is larger than that of the power consumption circuit module.

Further, one end of the external power switch is connected with an external power source, and the other end is configured to be electrically connected with the DCDC converter.

According to another aspect of the invention, a surgical energy instrument is provided, which includes the dual-mode power supply circuit as described above, wherein the power consumption circuit module includes an MCU unit and a prompting unit, and when a battery supplies power to the power consumption circuit module, the prompting unit prompts the state parameter information of the surgical energy instrument under the control of the MCU unit.

Further, a monitoring point is further arranged between the external power switch and the grid electrode of the third transistor, the monitoring point is configured to input a monitoring signal to a monitoring port of the power consumption circuit module, and if the monitoring signal is 0, the dual-mode power supply circuit is in a mode that a battery supplies power to the power consumption circuit module.

Further, if the dual-mode power supply circuit is in a mode in which the battery supplies power to the power consumption circuit module, the operation switch operates in a first mode, including: triggering the MCU unit to send a prompt instruction to a prompt unit in response to the operation switch being pressed;

if the dual-mode power supply circuit is in a mode that an external power supply supplies power to the power consumption circuit module, the operation switch works in a second mode, and the operation switch comprises: and triggering the MCU unit to send other instructions in response to the operation switch being pressed, wherein the other instructions are different from the prompting instructions sent to the prompting unit.

Further, the other instructions include:

in response to the operating switch being pressed, the MCU unit energizes an energy generator of the surgical energy instrument to generate energy; or,

in response to the operating switch being pressed, the MCU unit adjusting an output power of an energy generator of the surgical energy instrument; or,

and in response to the operation switch being pressed, the MCU unit controls the cutter end of the surgical energy instrument to perform clamping action.

According to a further aspect of the present invention there is provided an ultrasonic surgical system comprising an ultrasonic energy generator and a surgical energy apparatus as described above, the surgical energy apparatus being an ultrasonic surgical blade.

Further, the ultrasonic surgical system further comprises one or more of an endoscope, a microscope and a high-frequency electric burning device.

The technical scheme provided by the invention has the following beneficial effects:

a. the internal battery power supply mode and the external power supply mode are realized by using fewer (three) transistors, so that the response speed of the circuit and the overall stability of the circuit are improved;

b. the external power supply is effectively prevented from flowing backwards to the built-in battery, and the problem that the stability and the reliability of the power supply mode of the internal battery are influenced due to the fact that the battery is damaged or the performance of the battery is reduced is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic diagram of a dual mode power supply circuit provided by an exemplary embodiment of the present disclosure;

fig. 2 is a schematic diagram of a dual-mode power supply circuit capable of reducing an external power supply voltage drop according to an exemplary embodiment of the disclosure.

Wherein the reference numerals include: 102-external power switch, 104-DCDC converter, 200-battery, 300-operation switch, 402-first transistor, 404-second transistor, 406-third transistor, 408-fourth transistor, 502-first double-base diode, 504-second double-base diode, 602-MCU unit, 604-prompt unit, 606-other power consumption module.

Detailed Description

In order to make the technical solutions of the present invention better understood, 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.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.

The number of uses is defined in the specifications of the ultrasonic surgical blade, and therefore, it is important to confirm the remaining number of uses before the operation. The traditional approach is to manually record the number of remaining uses after each use. Instruments have also been developed that can count the number of times remaining, but this requires querying after the instrument is powered up. The invention provides a circuit which can conveniently inquire the remaining available times of an instrument without being connected with an external power supply. In the chinese patent application with publication number CN113855175A, along with the accumulation of the operation time of the ultrasonic scalpel, the external power supply will cause backward flow to the internal battery, which affects the stability of the internal battery for providing power for the low-power circuit, and also affects the service life of the battery; in addition, the two modes of battery power supply and external power supply can be realized only by using four switching tubes, the four switching tubes are triggered gradually, so that the response speed of the circuit is low, once one of the four switching tubes fails, the whole circuit fails, and the stability of the circuit is poor.

In an embodiment of the present invention, a dual-mode power supply circuit is provided, referring to fig. 1, the circuit includes an external power switch 102, a battery 200, a power consumption circuit module, an operation switch 300, a first transistor 402, a second transistor 404 and a third transistor 406, wherein the battery 200 is electrically connected to the power consumption circuit module through the first transistor 402 and the second transistor 404, wherein an anode of the battery 200 is electrically connected to a drain of the first transistor 402, a gate of the first transistor 402 is connected to the external power supply 100, a source of the first transistor 402 is electrically connected to a gate of the third transistor 406 through the operation switch 300, a gate of the second transistor 404 is simultaneously electrically connected to a drain of the third transistor 406 and a source of the first transistor 402, a source of the third transistor 406 is grounded, and wherein the first transistor 402 and the second transistor 404 are configured to be turned on when a gate voltage is lower than a corresponding preset voltage threshold (for example, the first transistor 402 and the second transistor 404 are configured to be turned on when the gate voltage is lower than a corresponding preset voltage threshold) A PMOS transistor), the third transistor 406 is configured to turn on when the gate voltage is higher than the corresponding preset voltage threshold (e.g., an NMOS transistor);

the dual mode Power supply circuit has an internal battery Power supply mode and an external Power supply mode, when the external Power switch is turned off and the operation switch is turned on, the dual mode Power supply circuit is In the internal battery Power supply mode, the external Power switch 102 is turned off and the operation switch 300 is turned on, since the external Power switch 102 is turned off, the gate of the first transistor 402 is at a low voltage, as can be seen from the characteristics of the above-mentioned transistors, the first transistor 402 is turned on, the positive electrode of the battery 200 is communicated with Power In fig. 1, before the operation switch 300 is turned on, the gate of the second transistor 404 is connected with Power In to obtain a pulled-up gate voltage, so that the second transistor 404 is turned off, and once the operation switch 300 is turned on, the voltage at the Power In pulls up the gate voltage of the third transistor 406 to turn it on, and further, the gate of the second transistor 404 is grounded through the third transistor 406, the second transistor 404 is turned on, and the battery 200 supplies power to the power consumption circuit module through the first transistor 402 and the second transistor 404.

The external power switch 102 is further electrically connected to a gate of the third transistor 406, when the external power switch 102 is turned on, the circuit enters an external power supply mode, and then the external power supply supplies power to the power consumption circuit module through the external power switch 102 and the second transistor 404, which is as follows: the external Power switch 102 is turned on to pull up the gate voltage of the first transistor 402 to turn off the path, so that the Power of the battery 200 cannot reach Power In, specifically, as shown In fig. 1, the first double-base diode 502, whose two bases are respectively connected to the external Power switch 102 and the battery 200, and whose emitter is electrically connected to the source of the second transistor 404, and since the voltage (e.g. 3.3V) obtained by turning on the external Power switch 102 is higher than the positive voltage (e.g. 3V) of the battery 200, the potential of the emitter is higher than the positive voltage of the battery 200, and therefore, one of the diodes of the first double-base diode 502 connected to the battery 200 is turned off In the reverse direction. In summary, the external voltage of 3.3V reaches Power In, i.e., the source of the second transistor. Meanwhile, the gate voltage of the third transistor 406 is pulled high by the external Power source to turn on, like the internal battery Power supply mode, the gate of the second transistor 404 is grounded through the third transistor 406, so that the second transistor 404 is turned on, that is, the external Power source supplies Power to the Power In, and In this mode, the battery 200 is isolated from the external Power source under the reverse blocking action of the first double-base diode 502, which effectively solves the problem that the external Power source flows back to the battery 200, and avoids the stability and reliability of the internal battery Power supply mode from being affected by the damage or performance degradation of the battery 200.

In one embodiment of the present invention, it is achieved that in the internal battery power mode, even if the operation switch 300 is pressed and then released, the power consumption circuit module can continue to operate (at least for a period of time), specifically as follows: referring to the second double-base diode 504 in fig. 1 or fig. 2, two bases of the second double-base diode are respectively connected to the operation switch 300 and the enable port (PowerEN in the figure) of the power consumption circuit module, and emitters of the second double-base diode are simultaneously electrically connected to the external power switch 102 and the gates of the third transistor 406, on the premise that the power consumption circuit module operates, the gate voltage of the third transistor 406 can be raised by controlling the enable port through a preset program, so that even if the operation switch 300 is turned off at this time, the power consumption circuit module can continue to operate, in this embodiment, the preset program is to extend for 10s, and after the timing is over, the output of the enable port is removed, that is, the power consumption circuit stops operating.

When the circuit of the above embodiment is applied to an energy instrument for surgery, such as an ultrasonic scalpel, an electrotome, a laser scalpel, or the like, it can be well solved that at least part of the power consumption circuit is turned on under the condition of no power supply, for example, the power consumption circuit module includes an MCU unit 602 and a prompting unit 604, and in the internal battery power supply mode, the prompting unit 604 prompts the state parameter information (such as parameters such as the number of remaining instruments available) of the energy instrument for surgery under the control of the MCU unit 602.

In an embodiment of the present invention, one end of the external power switch 102 is connected to an external power source (e.g. 24V, V1 in fig. 2), and the other end is configured to be electrically connected to the DCDC converter 104, so as to convert the input 24V voltage into a low voltage of 3.3V (V2 in fig. 2), a monitoring point is further disposed between the external power switch 102 (i.e. the V1 point) and the gate of the third transistor 406, and the monitoring point is configured to input a monitoring signal, i.e. a voltage division value between the collecting resistors R6 and R8, to a monitoring port of the power consumption circuit module, where a high voltage point before the conversion of the DCDC converter is connected to the monitoring, so that the monitoring is more sensitive. If the monitoring signal is 0, the dual-mode power supply circuit is in an internal battery power supply mode, so that the MCU unit 602 can monitor whether an external power supply is connected, so that the MCU unit 602 can perform a corresponding control action. Such as:

in an embodiment of the present invention, as shown in fig. 2, the dual-mode power supply circuit further includes a fourth transistor 408, the fourth transistor 408 is configured to be turned on when the gate voltage is higher than the corresponding preset voltage threshold (for example, an NMOS transistor), a drain of the fourth transistor 408 is connected to the external power switch 102, and a source thereof is electrically connected to the source of the second transistor 404. The gate of the fourth transistor 408 is connected to the GPIO port of the Power consumption circuit module, and if it is detected that an external Power source is connected, a voltage is output through the GPIO port to control the fourth transistor 408 to be turned on, so that the external Power source is directly turned on the Power In through the fourth transistor 408 instead of the first double-base diode 502, and a voltage drop from the external Power source to the Power In is reduced.

For another example, when it is detected that the external power supply is not connected, pressing the operation switch 300 causes the prompt unit 604, such as a display screen, to display the remaining available times; under the condition that the external power supply is monitored to be connected, the display screen can be controlled to display other information, such as working parameters of the ultrasonic knife, or a man-machine interaction interface is provided.

For another example, the dual-mode power supply circuit further includes another power consumption module 606, the other power consumption module 606 is connected to the external power switch 102 (the other power consumption module 606 does not turn on the battery 200, and the other power consumption module 606 is not enabled in the internal battery power supply mode), the power consumption of the other power consumption module 606 is greater than the power consumption of the power consumption circuit module, for example, the other power consumption module 606 may be a driving circuit or a digital processing circuit. When external power switch 102 is turned on, all power consuming circuits are activated and MCU unit 602 enters a ready state instead of sending the remaining available times to the display.

For another example, the operating switch 300 may be replaced with an existing button on the handle of the ultrasonic blade, which, while maintaining the original function of the existing button, has two modes:

if the dual mode power supply circuit is in the internal battery supply mode, the operation switch 300 operates in a first mode, including: in response to the operation switch 300 being pressed, triggering the MCU unit 602 to send a prompt instruction to the prompt unit 604;

if the dual-mode power supply circuit is in the external power supply mode, the operation switch 300 operates in a second mode, which includes: in response to the operation switch 300 being pressed, the MCU unit 602 is triggered to issue other instructions, which are different from the prompt instruction sent to the prompt unit 604. Other instructions here are for example:

in response to the operation switch 300 being pressed, the MCU unit 602 excites the energy generator of the surgical energy instrument to generate energy; or,

in response to the operation switch 300 being pressed, the MCU unit 602 adjusts the output power of the energy generator of the surgical energy instrument; or,

in response to the operation switch 300 being pressed, the MCU unit 602 controls the knife end of the surgical energy instrument to perform a clamping operation.

Obviously, the present invention is not limited to the operation switch 300 having two operation modes, and in other embodiments, the operation switch 300 is a switch dedicated to controlling the power consumption circuit module to be activated in the internal battery power supply mode, i.e., a new key is added on the basis of the operation key of the existing energy device for operation. Compared with the prior art, the embodiment with two working modes does not need to change the hardware structure of the handle of the existing ultrasonic scalpel, and can be realized through software.

In one embodiment of the present invention, there is provided an ultrasonic surgical system comprising an ultrasonic energy generator and a surgical energy apparatus as described above, the surgical energy apparatus being an ultrasonic surgical blade. The ultrasonic surgical system may further comprise one or more of an endoscope, a microscope, and a high frequency electrocautery device.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing is directed to embodiments of the present application and it is noted that numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.

Claims

1. A dual-mode power supply circuit is characterized by comprising an external power switch, a battery, a power consumption circuit module, an operation switch, a first transistor, a second transistor and a third transistor, wherein the battery is electrically connected with the drain electrode of the first transistor, the grid electrode of the first transistor is connected with the external power switch, the source electrode of the first transistor is electrically connected with the grid electrode of the third transistor through the operation switch, the grid electrode of the second transistor is simultaneously and electrically connected with the drain electrode of the third transistor and the source electrode of the first transistor, and the source electrode of the third transistor is grounded, wherein the first transistor and the second transistor are configured to be conducted when the grid voltage is lower than a corresponding preset voltage threshold value, and the third transistor is configured to be conducted when the grid voltage is higher than a corresponding preset voltage threshold value;

when the external power switch is turned off and the operation switch is turned on, the battery supplies power to the power consumption circuit module through the first transistor and the second transistor; when the external power switch is turned on, an external power supply supplies power to the power consumption circuit module through the external power switch and the second transistor.

2. The dual mode power supply circuit of claim 1, wherein the external power switch is further electrically connected to a gate of the third transistor.

3. The dual-mode power supply circuit according to claim 1, further comprising a bipolar diode having two bases connected to the external power switch and the battery, respectively, and an emitter electrically connected to the source of the second transistor;

4. The dual-mode power supply circuit as claimed in claim 2, further comprising a diode with two bases connected to the operation switch and the enable port of the power consumption circuit module, and an emitter electrically connected to the external power switch and the gate of the third transistor.

5. The dual-mode power supply circuit of claim 1, further comprising a fourth transistor configured to turn on when a gate voltage is above a respective preset voltage threshold, the gate of the fourth transistor being connected to a GPIO port of the power consumption circuit block;

6. The dual-mode power supply circuit according to claim 1, further comprising another power consumption module, the other power consumption module being connected to the external power switch, the power consumption of the other power consumption module being greater than the power consumption of the power consumption circuit module.

7. The dual mode power supply circuit of claim 1, wherein the external power switch has one end connected to an external power source and another end configured to electrically connect to a DCDC converter.

8. An energy apparatus for operation, comprising the dual-mode power supply circuit according to any one of claims 1 to 7, wherein the power consumption circuit module includes an MCU unit and a prompting unit that prompts information of the state parameter of the energy apparatus for operation under the control of the MCU unit when the power is supplied from the battery to the power consumption circuit module.

9. The surgical energy instrument as claimed in claim 8, wherein a monitoring point is further disposed between the external power switch and the gate of the third transistor, the monitoring point is configured to input a monitoring signal to the monitoring port of the power consumption circuit module, and if the monitoring signal is 0, the dual-mode power supply circuit is in a mode in which the battery supplies power to the power consumption circuit module.

10. The surgical energy device of claim 8, wherein if the dual mode power supply circuit is in a mode in which the battery powers the power consuming circuit module, the operating switch operates in a first mode comprising: triggering the MCU unit to send a prompt instruction to a prompt unit in response to the operation switch being pressed;

11. The surgical energy device of claim 10, wherein the other instructions comprise:

12. An ultrasonic surgical system comprising an ultrasonic energy generator and a surgical energy apparatus as claimed in any one of claims 8 to 11, the surgical energy apparatus being an ultrasonic scalpel.

13. The ultrasonic surgical system of claim 12, further comprising one or more of an endoscope, a microscope, and a high frequency electrocautery device.