CN114653565B

CN114653565B - Ultrasonic biological material welding machine circuit and self-adaptive resonant circuit

Info

Publication number: CN114653565B
Application number: CN202210299166.2A
Authority: CN
Inventors: 朱迪萌; 于滢; 黄华
Original assignee: Guangzhou Hong Jian Bio Medical Products And Technology Co ltd
Current assignee: Guangzhou Hong Jian Bio Medical Products And Technology Co ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2023-04-21
Anticipated expiration: 2042-03-25
Also published as: CN114653565A

Abstract

The invention discloses an ultrasonic biological material welding machine circuit and a self-adaptive resonant circuit, wherein the welding machine circuit generates a resonant signal, the generated resonant signal is provided for a transducer, the transducer converts electric energy into ultrasonic waves for plasticizing and welding biological materials, and the circuit comprises a switch circuit, a control circuit and a control circuit, wherein the switch circuit is used for enabling a digital signal to be connected into the circuit and outputting two paths of signals; the data processing circuit is used for processing the two paths of signals output by the switching circuit to form two paths of signal output with equal frequency and duty ratio and opposite phases; the conversion circuit is used for converting the two paths of signals output by the data processing circuit into single-ended signals; and the output circuit is used for filtering the single-ended signal output by the conversion circuit and generating a resonance signal output. And the output circuit generates a resonance signal, the resonance is provided for the transducer, the transducer converts electric energy into ultrasonic waves, and the ultrasonic waves have plasticizing effect on the biological materials, so that plasticizing welding of the biological materials is realized.

Description

Ultrasonic biological material welding machine circuit and self-adaptive resonant circuit

Technical Field

The invention belongs to the field of electronic circuits, and particularly relates to an ultrasonic biological material welding machine circuit and a self-adaptive resonant circuit.

Background

Modern medicine is developing in the direction of regenerating and reconstructing damaged human tissues and organs, recovering and improving physiological functions of human bodies, individuation, minimally invasive treatment and the like. Conventional inanimate medical metal, polymer, biological ceramic and other conventional materials can not meet the requirements of medical development, and biomedical material science and engineering face new opportunities and challenges.

The biological material (Biological materials) is also known as biotechnology or biotechnology. The comprehensive science and technology of new biological varieties with specific properties is directionally built by applying the principles of biology and engineering on the functions specific to biological materials and organisms. Bioengineering was developed based on molecular biology, cell biology, etc. at the beginning of the 70 s, and includes genetic engineering, cell engineering, enzyme engineering, fermentation engineering, etc., which are related to each other, wherein the genetic engineering is based. Only by modifying organisms through genetic engineering, it is possible to produce more and better biological products according to human wishes. The genetic engineering results are only possible to be converted into products by fermentation and other engineering.

Biological materials refer to a range of properties that should be possessed by or that perform a certain biological function, and are mainly divided into: 1. load bearing or transfer function: such as artificial bones, joints, teeth, etc., predominate. 2. Controlling blood or body fluid flow function: such as prosthetic valves, blood vessels, etc. 3. Electrical, optical, acoustic conduction functions: such as cardiac pacemakers, intraocular lenses, cochlea, etc. 4. Filling function: such as a cosmetic surgical filler.

Because of the specificity, the biological material is one of important products in the medical field, and in the application aspect, the parts made of the biological material are needed to be planted on the affected parts of patients so as to achieve the effects of connection, fixation and the like. There is therefore a need for a product that can effectively weld components made of biological materials.

Disclosure of Invention

The invention aims to provide an ultrasonic biological material welding machine circuit which can generate a resonance signal, wherein the generated resonance signal is provided for a transducer, and the transducer converts electric energy into ultrasonic waves for plasticizing and welding biological materials.

To achieve the object of the present invention, there is provided an ultrasonic biomaterial welding machine circuit for generating a resonance signal, the generated resonance signal being supplied to a transducer, the transducer converting electric energy into ultrasonic waves for plasticization welding of a biomaterial, the circuit comprising:

the switch circuit is used for enabling the digital signal to be connected into the circuit and outputting two paths of signals;

the data processing circuit is used for processing the two paths of signals output by the switching circuit to form two paths of signal output with equal frequency and duty ratio and opposite phases;

the conversion circuit is used for converting the two paths of signals output by the data processing circuit into single-ended signals; and

and the output circuit is used for filtering the single-ended signal output by the conversion circuit and generating a resonance signal output.

Furthermore, the circuit provided by the invention further comprises an isolation driving circuit, wherein the isolation driving circuit comprises an isolation driver U1, an isolation driver U2, a power tube Q1 and a power tube Q2, anodes of control sides of the isolation driver U1 and the isolation driver U2 are connected with a circuit power supply, and cathodes of the isolation driver U1 and the isolation driver U2 are respectively used for loading two paths of signals output by the data processing circuit; the control ends of the power tube Q1 and the power tube Q2 are respectively connected with the output ends of the isolation driver U1 and the isolation driver U2, and the output ends of the power tube Q1 and the power tube Q2 are respectively connected with the input ends of the conversion circuit.

Furthermore, the circuit provided by the invention further comprises a protection device R4 connected in series between the circuit power supply and the power supply end of the conversion circuit, so that the autonomous protection of the circuit is realized.

Further, the circuit provided by the invention further comprises a power supply circuit, wherein the power supply circuit comprises a power supply access end P8 and a protection device R10, the power supply access end P8 is used for power supply access, and the accessed power supply provides power for the electric elements through the protection device R10.

Further, the power supply circuit further includes a light emitting diode D2 connected in series between the power supply terminal P8 and the circuit ground, so as to realize a power-on indication.

Further, the switching circuit comprises a photoelectric isolation device U3, wherein the anode of the control side of the photoelectric isolation device U3 is connected with a circuit power supply, and the cathode of the photoelectric isolation device is connected with a low power supply through a switch; and the input end and the output end of the controlled side of the photoelectric isolation device U3 are used for loading and outputting signals. The photoelectric isolation device U3 is adopted, so that the input and output are effectively isolated while the driving output of the switch circuit is realized, the mutual influence of the input and the output is avoided, and the anti-interference capability and the stability are improved.

Further, the LED D1 is connected in series between the switch and the photoelectric isolation device U3, so that the switch-on indication is realized.

Further, the conversion circuit comprises a transformer T1, wherein the primary side of the transformer T1 comprises a connecting end 2, a connecting end 3, a connecting end 4 and a connecting end 5, the connecting end 2 and the connecting end 5 are used as input ends, and the connecting end 3 is connected with the connecting end 4 and then is connected with a circuit power supply; the secondary side is taken as output; the transformer is adopted to form a conversion circuit, and the circuit structure is simple.

Further, the output circuit includes an inductor L1 and a capacitor C2.

Another object of the present invention is to provide an adaptive resonant circuit comprising a signal acquisition device, a digital signal generator, and a functional circuit, wherein the functional circuit is an ultrasonic biomaterial welder circuit provided by the present invention; the signal acquisition equipment is used for acquiring two paths of output signals of an isolation driving circuit in the ultrasonic biomaterial welding machine circuit, and adjusting the frequency and the duty ratio of a digital signal generated by the digital signal generator according to the acquired two paths of output signals; the digital signal generated by the digital signal generator is loaded in a switch circuit in the ultrasonic biological material welding machine circuit, and is connected into the circuit under the action of the switch circuit.

The signal acquisition equipment configured by the self-adaptive resonant circuit acquires two paths of output signals of the isolation driving circuit, and then adjusts the frequency and the duty ratio of a digital signal generated by the digital signal generator according to the acquisition result, so that the ultrasonic biological material welding machine circuit can more effectively form a resonant signal.

The invention has the beneficial effects that: the ultrasonic biological material welding machine circuit generates a resonance signal through the output circuit, the resonance signal is provided for the transducer, the transducer converts electric energy into ultrasonic waves, and the ultrasonic waves have plasticizing effect on biological materials, so that plasticizing welding of the biological materials is realized. The configuration of the isolation driving circuit realizes effective isolation of input and output, avoids the mutual influence of the input and the output to a certain extent, and stabilizes the circuit; and moreover, the whole circuit is in a push-pull topological structure by matching with a power device, so that the driving capability of the circuit is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art. In the drawings:

FIG. 1 is a schematic block diagram of an ultrasonic biomaterial welder circuit provided by the invention;

FIG. 2 is a schematic circuit diagram of a switching circuit according to the present invention;

FIG. 3 is a schematic circuit diagram of the connection of the isolation driving circuit, the conversion circuit and the output circuit provided by the invention;

FIG. 4 is a schematic circuit diagram of a power supply circuit according to the present invention;

fig. 5 to 6 are schematic diagrams of signal waveforms according to the present invention.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art.

Referring to fig. 1, the ultrasonic biomaterial welding circuit provided by the invention comprises a switch circuit, a data processing circuit, an isolation driving circuit, a conversion circuit, an output circuit and a power supply circuit.

The switching circuit comprises a photoelectric isolation device U3 and a data processing circuit, wherein the anode of the control side of the photoelectric isolation device U3 is connected with a circuit power supply, and the cathode of the photoelectric isolation device U3 is connected with a low power supply through a switch; the input end and the output end of the controlled side of the photoelectric isolation device U3 are used for loading and outputting signals.

The switch can be directly connected with the cathode of the photoelectric isolation device U2 or connected with the cathode of the photoelectric isolation device U2 through a connecting terminal in parallel. As shown in fig. 2, the connection terminals P3 and P4 are configured with a plurality of ports, adjacent ports are in a group, one port is suspended, the other port is grounded, the switch is connected in series between the two ports, when the switch is turned on, the cathode of the photo-isolation device U3 is grounded, and the anode is connected to the circuit power supply, at this time, the control side of the photo-isolation device U3 sends a control signal to turn on the controlled side, and the signal loaded on the input terminal is output. The arrangement of the plurality of switches avoids the condition that one switch is damaged and cannot be used.

In order to further reduce the interference signal generated during the switching operation from entering the circuit, one end of the switch connected with the photoelectric isolation device U3 is grounded through a capacitor C4, and the capacitor C4 is used for filtering to remove the interference signal generated during the switching operation.

In order to provide an indication function when the switch is turned on, a light emitting diode D1 for indication is arranged between the switch and the photo-coupler U3, and a resistor R8 is connected in series between the switch and the light emitting diode D1. The light emitting diode D1 is configured in red, blue, yellow or other colors.

Similarly, in order to ensure the stability of the output signal, the output end of the photoelectric isolation device U3 is provided with the grounding of the capacitor C7, so that the filtering of the output signal is realized, and the stability of the output signal is ensured.

Referring to fig. 2, a resistor R11 and a resistor R13 are configured, wherein one end of the resistor R11 and one end of the resistor R13 are respectively connected with the output end of the photoelectric coupling device U3, and the other end of the resistor R11 and the resistor R13 are used as two paths of output of the switching circuit; the resistor R11 and the resistor R13 and one end of the output end of the photoelectric coupling device U3 are respectively grounded to the circuit through the resistor R12. When the photoelectric isolation device U3 has output, two paths of signal output are formed through the resistor R11 and the resistor R13 respectively.

The data processing circuit is connected with the output end of the switching circuit, and two paths of signals output by the switching circuit are respectively output by the data processing circuit. Referring to fig. 2, the data processing circuit includes a programmable logic device U4, a resistor R9, a resistor R14, a capacitor C10 and a capacitor C5, wherein the resistor R9 and the resistor R14 are connected in series between a circuit power supply and a circuit ground, and the connection between the two is terminated with the programmable logic device U4, so as to provide bias of the programmable logic device U4 to ensure that the programmable logic device U4 can work normally; the capacitor C10 and the capacitor C5 are used for filtering, so that the unstable condition of the programmable logic device U4 caused by power supply interference is effectively avoided. The Programmable Logic Device (PLD) is used for the existing computer code which is successfully debugged, and the code is used for realizing phase change and differentiation processing of input signals when being executed, and outputting digital signals with equal two paths of duty ratios and frequencies and opposite phases.

In another embodiment of the switching circuit, the switching circuit comprises two branches, each branch is configured to comprise a photoelectric isolation device U3, the anode of the control side of the photoelectric isolation device U3 is connected with a circuit power supply, and the cathode of the photoelectric isolation device U3 is connected with a low power supply through a switch; the input end and the output end of the controlled side of the photoelectric isolation device U3 are used for loading and outputting signals.

In this embodiment, the switch of each branch may be directly connected to the cathode of the photo-isolation device U2, or may be connected to the cathode of the photo-isolation device U2 through a connection terminal. As shown in fig. 2, the connection terminals P3 and P4 are configured with a plurality of ports, adjacent ports are in a group, one port is suspended, the other port is grounded, the switch is connected in series between the two ports, when the switch is turned on, the cathode of the photo-isolation device U3 is grounded, and the anode is connected to the circuit power supply, at this time, the control side of the photo-isolation device U3 sends a control signal to turn on the controlled side, and the signal loaded on the input terminal is output. The arrangement of the plurality of switches avoids the condition that one switch is damaged and cannot be used.

Each branch of the switching circuit is matched with digital signals with equal duty ratio and frequency but opposite phases, and the two branch switches are simultaneously conducted to output two paths of signals.

Referring to fig. 3, the isolation driving circuit includes an isolation driver U1, an isolation driver U2, a power tube Q1 and a power tube Q2, wherein a control side power supply terminal of the isolation driver U1 and the isolation driver U2 is connected with a resistor R1 and a resistor R5, and a circuit power supply is respectively loaded on the control side power supply terminals of the isolation driver U1 and the isolation driver U2 through the resistor R1 and the resistor R5; the controlled side power supplies of the isolation driver U1 and the isolation driver U2 are connected with the circuit power supply and are grounded through the capacitor C1 and the capacitor C3 respectively, the configuration of the capacitor C1 and the capacitor C3 realizes the filtering of the circuit power supply, the interference of interference signals in the circuit power supply to the circuit is reduced, and the stability of the circuit is ensured. The output ends of the isolation driver U1 and the isolation driver U2 are respectively connected with the control ends of the power device Q1 and the power device Q2 through a resistor R2 and a resistor R6, the low power supply ends of the power device Q1 and the power device Q2 are connected with the circuit ground, and the output ends are connected with the conversion circuit.

In order to improve the on-off speed of the power device, a resistor R3 and a resistor R7 are respectively connected in series between the control end and the low power supply end of the power device Q1 and the power device Q2 of the driving circuit.

And the conversion circuit is used for converting the differential signal into a single-ended signal. With continued reference to fig. 3, the converting circuit is configured as a transformer T1, and the primary side of the transformer T1 includes a connection end 2, a connection end 3, a connection end 4 and a connection end 5, where the connection end 2 and the connection end 5 are used as input ends, and the connection end 3 is connected with the connection end 4 and then is connected with a circuit power supply; the secondary side is taken as output. When the isolation driving circuit is not configured, the connecting end 2 and the connecting end 5 are connected with the output of the switching circuit; when the isolation driving circuit is configured, the connection terminal 2 and the connection terminal 5 are connected to the output of the isolation driving circuit.

And the output circuit is used for filtering the single-ended signal output by the conversion circuit and generating a resonance signal output. Referring to fig. 3, the output circuit is configured as LC power. Specifically, one end of the inductor L1 is connected with the secondary side 8 end of the transformer T1, the secondary side 11 end of the transformer T1 and the other end of the inductor L1 are used as output ends to be connected with the connecting end P1 and the connecting end P2, the connecting end P1 and the connecting end P2 are used for load connection, a contact pin can be adopted, and the quick connection with a load can be realized by matching with a socket; the capacitor C2 is connected in series between the other end of the inductor L1 and the secondary 11 of the transformer T1.

The LC circuit performs resonance matching while rectifying and filtering the signal output by the transformer T1 to form a resonance signal; when the resonance frequency of the LC circuit resonance signal is consistent with the natural frequency of the piezoelectric transducer, resonance is formed, and ultrasonic waves generated by the piezoelectric transducer can plasticize the biological material, so that plasticization welding of the biological material is realized.

Adjusting the frequency and the duty ratio of a digital signal loaded on a switching circuit according to the natural frequency of the transducer so as to improve the resonance matching capability of the circuit; wherein the digital signal is generated by a digital signal generator.

The power supply circuit comprises a power supply access end P8 and a protection device R10, wherein the power supply access end P8 comprises a VCC end and a GND end, one end of the protection device R10 is connected with the VCC end of the power supply access end P8, and the other end is used as an output end; the power supply is connected through the VCC terminal and then output through the protection device R10 to form a circuit power supply. The output end of the protection device R10 can be directly connected with the circuit electric device through a wire to provide working power supply, and can also be connected with a power supply end. As shown in fig. 4, the configuration includes a VCC terminal and a GND terminal, which are respectively connected to the output terminal of the protection device R10, and a power source terminal P7, a power source P9, and a power source P10, and the GND terminal is respectively connected to the circuit ground, and is connected to the power source terminal and the power-requiring device through a wire or a lead, so as to provide a working power for the power-requiring device.

In order to ensure circuit stability, a capacitor C8 and a capacitor C9 are connected between the output end of the protection device R10 and circuit ground, and the capacitor C8 and the capacitor C9 are connected in parallel, so that filtering of a power supply is realized, and interference is reduced.

The power supply circuit is further provided with a light emitting diode D2 for power indication. The anode of the light emitting diode D2 is connected to the VCC terminal of the power supply access terminal P8 via the resistor R15, and the cathode is grounded. The resistor R10 acts as a limiting current voltage divider, so that the light-emitting diode D2 is prevented from being burnt out, and the light-emitting diode D2 can work normally.

Herein, the protection device R4/R10 is configured as a PCT device, such as a PCT resistor, or other semiconductor material or component with a large positive temperature coefficient.

The circuit outputs two paths of signals after being loaded on the switch circuit, forms a single-ended signal through the conversion circuit, and forms a resonance signal output when the single-ended signal is filtered by LC. The output may be provided to a transducer that converts electrical energy into acoustic energy, which generates ultrasonic waves that may be used for plasticization welding of biological materials. It will of course be appreciated that the present circuit can also be used with other actual circuits.

When the circuit is configured with an isolation matching circuit, a signal output by the switching circuit is input into a conversion circuit through the isolation matching circuit to realize conversion between a differential signal and a single-ended signal.

The circuit provided by the invention can realize effective resonance matching according to the matching of the transducer with corresponding digital signals, has wide practicability and is not limited to one or a specific kind of transducer; and the circuit can be realized by adopting discrete components, so that the cost is reduced.

The circuit is matched with signal acquisition equipment and a digital signal generator to form a self-adaptive resonant circuit. The signal acquisition equipment is used for acquiring two paths of output signals of the isolation driving circuit in the ultrasonic biological material welding machine circuit, and adjusting the frequency and the duty ratio of a digital signal generated by the digital signal generator according to the acquired two paths of output signals; the digital signal generated by the digital signal generator is loaded in a switch circuit in the ultrasonic biological material welding machine circuit and is connected into the circuit under the action of the switch circuit, so that the resonance capability of the ultrasonic biological material welding machine circuit is improved. The signal acquisition equipment is configured as an oscilloscope, an operator realizes the debugging of the digital signal generator according to two paths of signals displayed by the oscilloscope, and particularly, when the two paths of signals displayed by the oscilloscope are shown in fig. 5, the two paths of signals are not regulated; when the two signals displayed by the oscilloscope are shown in fig. 6, the digital signal generator is adjusted to change the frequency and the duty ratio of the output signals, so that the two output signals of the isolation driving circuit are shown in fig. 5.

In this case, the phase difference of the two digital signals with opposite phases is set according to the situation of the transducer, so that the output circuit can generate a fixed frequency with the transducer, and the transducer can resonate to generate a larger ultrasonic wave so as to realize effective welding. Such as 180 °,120 °, 150 °, or others; when the two paths of digital signals are configured to have equal frequency and duty ratio and 180 degrees phase difference, the conversion circuit continuously forms a single-ended signal in one period so as to ensure that the output circuit is continuously loaded with the signal to generate a resonance signal, thereby ensuring the continuity and the effectiveness of welding and improving the welding quality.

The present disclosure has been described with respect to the above-described embodiments, however, the above-described embodiments are merely examples of implementation of the present disclosure. It must be noted that the disclosed embodiments do not limit the scope of the present disclosure. Rather, the foregoing is considered to be illustrative, and it is to be understood that the invention is not limited to the specific details disclosed herein.

Claims

1. An ultrasonic biomaterial welder circuit that generates a resonant signal that is provided to a transducer that converts electrical energy into ultrasonic waves for plasticization welding of a biomaterial, the circuit comprising:

the driving circuit is isolated from the driving circuit,

the switching circuitry is configured to switch the switching circuitry,

the output circuit is used for filtering the single-ended signal output by the conversion circuit and generating a resonance signal output; and

a power supply circuit for supplying power to the electric elements;

the isolation driving circuit comprises an isolation driver U1, an isolation driver U2, a power tube Q1 and a power tube Q2, wherein anodes of control sides of the isolation driver U1 and the isolation driver U2 are connected with a circuit power supply, and cathodes of the isolation driver U1 and the isolation driver U2 are respectively used for loading two paths of signals output by the data processing circuit; the control ends of the power tube Q1 and the power tube Q2 are respectively connected with the output ends of the isolation driver U1 and the isolation driver U2, and the output ends of the power tube Q1 and the power tube Q2 are respectively connected with the input ends of the conversion circuit;

two paths of signals output by the data processing circuit are respectively connected into the isolation driver U1 and the isolation driver U2, and then connected into the conversion circuit through the power tube Q1 and the power tube Q2 to be converted into single-ended signals which are connected into the output circuit.

2. The ultrasonic biomaterial welder circuit of claim 1, further comprising a protective device R4 in series between the circuit power source and the power terminal of the switching circuit.

3. The ultrasonic biomaterial welder circuit of claim 1, wherein the power circuit includes a power access terminal P8 and a protection device R10, the power access terminal P8 is configured to access a power source, and the accessed power source provides power to the electrical components through the protection device R10.

4. The ultrasonic biomaterial welder circuit of claim 3, further comprising a light emitting diode D2 connected in series between the power terminal of the power access terminal P8 and circuit ground.

5. The ultrasonic biomaterial welder circuit of claim 1, wherein the switching circuit comprises a photoelectric isolation device U3, wherein the anode of the control side of the photoelectric isolation device U3 is connected with a circuit power supply, and the cathode is connected with a low power supply through a switch; and the input end and the output end of the controlled side of the photoelectric isolation device U3 are used for loading and outputting signals.

6. The ultrasonic biomaterial welder circuit of claim 5, further comprising a light emitting diode D1 in series between the switch and the opto-electronic isolation device U3.

7. The ultrasonic biomaterial welder circuit of claim 1, wherein the switching circuit comprises a transformer T1, wherein a primary side of the transformer T1 comprises a connection end 2, a connection end 3, a connection end 4 and a connection end 5, the connection end 2 and the connection end 5 are used as input ends, and the connection end 3 is connected with the connection end 4 and then connected with a circuit power supply; the secondary side is taken as output.

8. The ultrasonic biomaterial welder circuit of claim 1, wherein the output circuit includes an inductance L1 and a capacitance C2.

9. An adaptive resonant circuit comprising a signal acquisition device, a digital signal generator, and a functional circuit, wherein the functional circuit is the ultrasonic biomaterial welder circuit of any one of claims 1-8; the signal acquisition equipment is used for acquiring two paths of output signals of an isolation driving circuit in the ultrasonic biomaterial welding machine circuit, and adjusting the frequency and the duty ratio of a digital signal generated by the digital signal generator according to the acquired two paths of output signals; the digital signal generated by the digital signal generator is loaded in a switch circuit in the ultrasonic biological material welding machine circuit, and is connected into the circuit under the action of the switch circuit.