An electrosurgical instrument cleaning system

Abstract

The present invention relates to the technical field of acoustic wave cleaning, and in particular to an electrosurgical instrument cleaning system. The system comprises a steam spray gun cleaning table, an enzyme washing tank, an ultrasonic tank, a final washing tank, a boiling tank, and a drying table. The system is characterized in that the ultrasonic tank comprises an ultrasonic generator, a medium- and low-frequency acoustic wave generator, an acoustic wave controller, a sound collector, and a sound analyzer. The acoustic wave controller adopts a cyclic pulse acoustic wave control method to control the ultrasonic generator and the medium- and low-frequency acoustic wave generator to emit specific waveforms to complete cleaning. The system uses the sound collector and the sound analyzer to collect waveform peaks generated by a cleaning agent under the excitation of the medium- and low-frequency acoustic waves, determines the resonant frequency of the cleaned part, and applies the resonant frequency to cause the cleaned part to resonate, thereby increasing the amount of attachments, thereby improving cleaning efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of sonic cleaning, and in particular to an electrosurgical instrument cleaning system. Background Art

[0002] Cleaning and disinfecting surgical instruments is a crucial step in medical procedures. These instruments come into direct contact with the patient's body, and failure to perform proper cleaning and disinfection can lead to cross-infection and other potential medical accidents. Therefore, the disinfection and sterilization of surgical instruments has become a crucial task in ensuring patient safety. The cleaning and disinfection of surgical instruments are crucial steps in the medical field, directly impacting the safety of surgical procedures and the health of patients.

[0003] The general principles of surgical instrument cleaning include the steps of decontamination, descaling, and sterilization. First, decontamination involves removing organic matter, such as blood secretions, from the surface of surgical instruments to prevent them from interfering with subsequent cleaning and disinfection. Second, descaling involves removing non-organic matter, such as grease, dust, and bacteria, from the surface of surgical instruments to maintain their cleanliness. Finally, sterilization involves using appropriate methods to eliminate pathogenic microorganisms on the instrument surface while ensuring its sterility to prevent cross-infection.

[0004] Regarding the cleaning method of surgical instruments, the prior art discloses the following related technologies:

[0005] The Chinese patent with announcement number CN210304848U discloses a medical instrument cleaning workstation; specifically, it discloses: it includes a frame and a cleaning tank group movably embedded in the top of the frame, the cleaning tank group includes a steam cleaning tank, an ultrasonic cleaning tank, an enzyme cleaning tank, a terminal rinse tank and a boiling disinfection tank that are connected in sequence and are all detachably connected. The two ends of the cleaning tank group are respectively detachably connected to a control device and a drying table, and the control device is respectively connected to a card punch and a printer.

[0006] A Chinese patent with authorization announcement number CN105642610B discloses an ultrasonic cleaning machine for rigid endoscopes; specifically, it includes: a housing, a cleaning tank, an ultrasonic system, a liquid adding system, a suction system, a control system, an automatic water supply and drainage system, and a cleaning basket; the housing includes: a left housing, a right housing, a left panel, a right panel, a bottom plate, and a bracket; the tank body of the cleaning tank is mounted on the right housing and the bottom of the cleaning tank body is tilted at a preset angle, and the cleaning basket is placed in the cleaning tank. Rigid endoscope-like tubular instruments are cleaned by machine instead of manually.

[0007] Chinese patent publication number CN201482745U discloses a novel rigid endoscope cleaning device. Specifically, it describes a device for cleaning rigid endoscopes in hospitals, comprising a primary wash tank, an enzyme wash tank, and a final wash tank. The enzyme wash tank is equipped with an enzyme dispenser, while the final wash tank is equipped with a flushing dispenser. The primary wash tank is equipped with a steam pipe connected to a steam generator. The enzyme wash tanks are arranged in sequence: an instrument enzyme wash tank and a mirror enzyme wash tank. An ultrasonic wash tank is located in front of the final wash tank, with an ultrasonic generator installed at the bottom.

[0008] However, the above prior art still has the following problems:

[0009] 1. The existing cleaning process of medical equipment is: pre-wash + enzyme wash + ultrasonic + final wash + drying station. It has the problem of insufficient cleaning ability for biological attachments, especially the end of electrosurgical instruments that are burnt and sticky with tissue.

[0010] 2. Existing ultrasonic cleaning devices rely on fixed-frequency ultrasonic waves to excite clean water or bubbles for cleaning. They are not capable of cleaning the ends of electrosurgical instruments that are burnt or stuck with tissue, as well as the corner structures of the inner cavity of the instrument. Summary of the Invention

[0011] In view of the above problems, the object of the present invention is to propose:

[0012] An electrosurgical instrument cleaning system includes: a steam spray gun cleaning station, an enzyme washing tank, an ultrasonic tank, a final washing tank, a boiling tank, and a drying station. The ultrasonic tank includes an ultrasonic generator, a medium- and low-frequency sound wave generator, a sound wave controller, a sound collector, and a sound analyzer. The sound wave controller uses a cyclic pulse sound wave control method to control the ultrasonic generator and the medium- and low-frequency sound wave generator to emit specific waveforms to complete cleaning. The cyclic pulse sound wave control method includes the following steps:

[0013] S1, trial cleaning stage: using the medium and low frequency sound wave generator, the sound collector and the sound analyzer to determine the resonance frequency of the cleaned object;

[0014] S2, the medium and low frequency sound wave generator induces resonance: the medium and low frequency sound wave generator is started; the sound wave controller controls the medium and low frequency sound wave generator to emit sound waves of a specific frequency according to a linear increasing formula;

[0015] S3, the ultrasonic generator applies pulsed ultrasonic waves: the ultrasonic generator is controlled in linkage with the medium and low frequency acoustic wave generator under the control of the acoustic wave controller;

[0016] S4, cyclic cleaning: cyclically execute steps S2 and S3 until the preset cleaning time.

[0017] Furthermore, step S1 specifically includes:

[0018] S11, the medium and low frequency sound wave generator is in accordance with ([p start ,p end ],Δp,Δt) parameters send out cyclically increasing low- and medium-frequency sound waves as test sound waves; among them, p start and p end Respectively represent the starting frequency and ending frequency of the medium and low frequency sound waves, Δp represents the incremental frequency step of the sound wave, and Δt represents the application time of the medium and low frequency sound waves of each frequency; the kth trial sound wave satisfies: p k =p start +kΔp;

[0019] S12, the sound collector collects the sound signal of the cleaning tank and sends the sound signal to the sound analyzer;

[0020] S13, the sound analyzer performs waveform analysis on the sound signal, determines the peak signals with decibels higher than those on both sides based on the waveform analysis, determines the strong wavelength division signal of the sound signal, and obtains a strong wavelength division signal set {p k},satisfy:

[0021]

[0022] in, are the frequencies of the strong wavelength division signals represented by the n peak signals of the acoustic signal collected under the kth test sound wave;

[0023] S14, for the adjacent strong wavelength division signal set {p k} and {p k+1 Perform difference calculation to determine the resonant frequency of the cleaned part;

[0024] S15, determine the resonant frequency set of the cleaned part; based on the determination result of step S14, determine the resonant frequency set of the cleaned part {p co},satisfy: in, They represent the sequence of resonance frequencies of the cleaned object, with a maximum number of m.

[0025] Furthermore, in step S2, the linear increasing formula satisfies:

[0026]

[0027] Where, p(t) is the sound wave frequency emitted by the medium and low frequency sound wave generator at time [t], T is the cycle period time of the medium and low frequency sound wave generator, [t] is the remainder obtained by dividing the real time t by the cycle period time T of the medium and low frequency sound wave generator, and it satisfies: [t]=t - j·T and 0≤[t]<T, where j is the number of cycles and is a natural number.

[0028] Further, in step S3, the linkage control of the ultrasonic generator and the medium and low frequency sound wave generator under the control of the sound wave controller means that: when the frequency of the medium and low frequency sound wave generator is within the range of plus or minus 10% of the resonance frequency of the part to be cleaned, the ultrasonic generator emits ultrasonic waves at the first decibel.

[0029] Further, in step S3, the linkage control of the ultrasonic generator and the medium and low frequency sound wave generator under the control of the sound wave controller further includes: when the frequency of the medium and low frequency sound wave generator is not within the range of plus or minus 10% of the resonance frequency of the part to be cleaned, the ultrasonic generator emits ultrasonic waves at the second decibel.

[0030] Further, the first decibel is greater than the second decibel.

[0031] Further, in step S14, determining the resonance frequency of the part to be cleaned means that: if it satisfies: Then it is determined that p k+1 is not the resonance frequency of the part to be cleaned; if it satisfies: Then it is determined that p k+1 is the resonance frequency of the part to be cleaned; where, {p k+1} represents the set of strong wave component signals determined based on the waveform analysis when the medium and low frequency sound wave generator emits a probing sound wave with a frequency of p k+1 ; {p k} represents the set of strong wave component signals determined based on the waveform analysis when the medium and low frequency sound wave generator emits a probing sound wave with a frequency of p k ; represents the empty set; it satisfies:

[0032] p k =p​​​​​​​​​​​​​​​​​​are the frequencies of the strong wavelength division signals represented by a total of w peak signals of the acoustic signal collected under the k+1th trial sound wave, and n and w are both natural numbers.

[0036] Furthermore, heaters are installed in the steam spray gun cleaning table and the boiling tank, and the drying table is provided with a hot air gun for blowing air toward the table surface, and the hot air is filtered and sterilized.

[0037] Furthermore, the boiling tank uses pure water to have a heating, soaking and rust removal function in addition to the existing boiling and disinfection function.

[0038] Furthermore, the electrosurgical instrument cleaning system has a stainless steel frame and is capable of moving as a whole.

[0039] The beneficial effects of the present invention are:

[0040] 1. The present invention improves the cleaning ability by combining ultrasonic waves with medium and low frequency sound waves for cleaning.

[0041] 2. The present invention uses a sound collector and a sound analyzer to collect waveform peaks of the cleaned agent under the excitation of medium and low frequency sound waves, "listen" to the resonant sound emitted by the cleaned object at a specific frequency due to resonance, which is different from other sounds, and then determine the resonant frequency of the cleaned object. By applying the resonant frequency, the cleaned object resonates, thereby increasing the efficiency of shedding attachments, especially burnt and sticky tissues, and improving the cleaning efficiency.

[0042] 3. When the object being cleaned is excited to resonate, the present invention increases the power of the ultrasound (increases the decibel of the ultrasound) to achieve pulsed powerful cleaning. At other frequencies, the ultrasound maintains a slightly lower decibel, which can reduce damage to the object being cleaned and reduce power consumption.

[0043] 4. The present invention adopts cyclic ultrasonic cleaning, which avoids the problem that single-frequency ultrasonic cleaning cannot cover different cleaning frequency ranges, thereby improving the effectiveness of cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 Schematic diagram of the flow of the cyclic pulsed acoustic wave control method of the present invention. DETAILED DESCRIPTION

[0045] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the examples. The examples are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0046] Example 1

[0047] according to Figure 1As shown, this embodiment provides an electrosurgical instrument cleaning system, comprising: a steam spray gun cleaning station, an enzyme washing tank, an ultrasonic tank, a final washing tank, a boiling tank, and a drying station. The ultrasonic tank includes an ultrasonic generator, a medium- and low-frequency sound wave generator, a sound wave controller, a sound collector, and a sound analyzer. The sound wave controller uses a cyclic pulse sound wave control method to control the ultrasonic generator and the medium- and low-frequency sound wave generator to emit specific waveforms to complete cleaning. The cyclic pulse sound wave control method includes the following steps:

[0048] S1, trial cleaning stage: using the medium and low frequency sound wave generator, the sound collector and the sound analyzer to determine the resonance frequency of the cleaned object;

[0049] S2, the medium and low frequency sound wave generator induces resonance: the medium and low frequency sound wave generator is started; the sound wave controller controls the medium and low frequency sound wave generator to emit sound waves of a specific frequency according to a linear increasing formula;

[0050] S3, the ultrasonic generator applies pulsed ultrasonic waves: the ultrasonic generator is controlled in linkage with the medium and low frequency acoustic wave generator under the control of the acoustic wave controller;

[0051] S4, cyclic cleaning: cyclically execute steps S2 and S3 until the preset cleaning time.

[0052] Furthermore, step S1 specifically includes:

[0053] S11, the medium and low frequency sound wave generator is in accordance with ([p start ,p end ],Δp,Δt) parameters send out cyclically increasing low- and medium-frequency sound waves as test sound waves; among them, p start and p end Respectively represent the starting frequency and ending frequency of the medium and low frequency sound waves, Δp represents the incremental frequency step of the sound wave, and Δt represents the application time of the medium and low frequency sound waves of each frequency; the kth trial sound wave satisfies: p k =p start +kΔp;

[0054] S12, the sound collector collects the sound signal of the cleaning tank and sends the sound signal to the sound analyzer;

[0055] S13, the sound analyzer performs waveform analysis on the sound signal, determines the peak signals with decibels higher than those on both sides based on the waveform analysis, determines the strong wavelength division signal of the sound signal, and obtains a strong wavelength division signal set {p k},satisfy:

[0056]

[0057] in, They are the frequencies of the strong wavelength division signals represented by a total of n spike signals of the acoustic signals collected under the k-th trial acoustic wave respectively;

[0058] S14. Calculate the difference set of adjacent sets of strong wavelength division signals {p k} and {p k+1} to determine the resonance frequency of the workpiece to be cleaned;

[0059] S15. Determine the set of resonance frequencies of the workpiece to be cleaned; based on the determination result of step S14, determine the set of resonance frequencies of the workpiece to be cleaned {p co}, satisfying: wherein, respectively represent the sequence of the resonance frequencies of the workpiece to be cleaned, and the maximum number is m.

[0060] Further, in step S2, the linear increasing formula satisfies:

[0061]

[0062] where p(t) is the acoustic wave frequency emitted by the medium and low frequency acoustic wave generator at time [t], T is the cycle period time of the medium and low frequency acoustic wave generator, [t] is the remainder of the real time t divided by the cycle period time T of the medium and low frequency acoustic wave generator, satisfying: [t]=t - j·T and 0≤[t]<T, j is the number of cycles and is a natural number.

[0063] Based on the above method, a specific embodiment is given below. This embodiment is only for illustration and does not limit the protection scope of the claims:

[0064] Based on the original cleaning tank, a cleaning workstation is designed in combination with the actual situation of the cleaning of hospital rigid endoscopes. The workstation consists of six parts: steam spray gun cleaning, enzyme washing tank, ultrasonic tank, final washing tank, boiling tank, and drying table. Pure water is injected, and high-pressure air guns and high-pressure water guns are configured, with complete cleaning functions; especially the steam spray gun, which plays an important role in cleaning electrosurgical instruments such as electric hooks, electric shovels, and electric resection loops; the workstation is made of all stainless steel, extending its service life.

[0065] Put the electron microscope tube, electric knife, etc. to be cleaned into the cleaning basket. After being cleaned by the steam spray gun and the enzyme washing tank, the adhered biological tissues are partially softened and detached, and then put into the ultrasonic tank, and the medium and low frequency acoustic wave generator is started.

[0066] The resonant frequency of rubber parts is usually 10Hz-10kHz. The resonant frequency of medical hard rubber is slightly higher. 100Hz is taken as the starting point of the test sound wave, and 15kHz is taken as the end point of the test sound wave, that is, the test sound wave interval is [0.1kHz, 15kHz]. The step size of the test sound wave is set to 0.1kHz, and the test time is 0.1s. Then, the first test sound wave is 0.1kHz and applied for 0.1s, the second test sound wave is 0.2kHz and applied for 0.1s, the third test sound wave is 0.2kHz and applied for 0.1s, and so on.

[0067] After applying the test sound wave, the sound collector collects the sound signal of the cleaning tank and sends the sound signal to the sound analyzer. Based on the waveform analysis, the resonance of the cleaning basket under different test sound waves is determined. The resonance condition is represented by the resonant sound, that is, when the test sound wave of the resonant frequency is applied, the parts to be cleaned in the cleaning basket of the complex system will send a slight resonant expansion and emit a slight sound. Since the resonant sound is caused by a slight collision, its frequency is usually significantly different from the test sound wave. Through waveform analysis, the test sound wave that causes the resonance can be found. For example, when the cleaning basket is at 8.2kHz, there is a sharp wave in the sound wave emitted, and this sharp wave does not exist at 8.0kHz and 8.4kHz. It can be determined that the resonant frequency of the cleaning basket is around 8.2kHz. Different cleaning baskets with different parts to be cleaned have different resonant frequencies, which can be determined using the same method.

[0068] After determining the resonant frequency of the cleaning basket, a higher power (decibel) cleaning ultrasonic wave can be applied during resonance. For example, the power of the ultrasonic wave at the non-resonant frequency is 150W, and at the resonant frequency, 200W is applied. Because the cleaning basket is excited by resonance, applying high-power ultrasonic wave at this time will achieve better cleaning effect.

[0069] Furthermore, in step S3, the ultrasonic generator is linked with the medium and low frequency sound wave generator under the control of the sound wave controller, which means that when the frequency of the medium and low frequency sound wave generator is in the range of plus or minus 10% of the resonant frequency of the cleaned part, the ultrasonic generator emits an ultrasonic wave of the first decibel or the first power.

[0070] Furthermore, in step S3, the ultrasonic generator is linked with the medium and low frequency sound wave generator under the control of the sound wave controller and also includes: when the frequency of the medium and low frequency sound wave generator is not in the range of plus or minus 10% of the resonant frequency of the cleaned part, the ultrasonic generator emits an ultrasonic wave of a second decibel or a second power.

[0071] Furthermore, the first decibel or first power is greater than the second decibel or second power.

[0072] Furthermore, in step S14, determining the resonance frequency of the cleaned object means: if: Then determine p k+1 It is not the resonant frequency of the cleaned part; if it satisfies: Then determine p k+1 is the resonant frequency of the cleaned object; where {p k+1} indicates that the frequency of the medium and low frequency sound wave generator is p k+1 When the probe sound wave is detected, the strong wavelength division signal set determined based on the waveform analysis; {p k} indicates that the frequency of the medium and low frequency sound wave generator is p k When the probe sound wave is detected, a strong wavelength division signal set determined based on the waveform analysis; represents the empty set; satisfies:

[0073] p k =p start +kΔp

[0074] p k+1 =p start +(k+1)Δp

[0075]

[0076] in, are the frequencies of the strong wavelength division signals represented by the n peak signals of the acoustic signal collected under the kth test sound wave; are the frequencies of the strong wavelength division signals represented by a total of w peak signals of the acoustic signal collected under the k+1th trial sound wave, and n and w are both natural numbers.

[0077] Furthermore, heaters are installed in the steam spray gun cleaning table and the boiling tank, and the drying table is provided with a hot air gun for blowing air toward the table surface, and the hot air is filtered and sterilized.

[0078] Furthermore, the boiling tank uses pure water to have a heating, soaking and rust removal function in addition to the existing boiling and disinfection function.

[0079] Furthermore, the electrosurgical instrument cleaning system has a stainless steel frame and is capable of moving as a whole.

[0080] Furthermore, the ultrasonic frequency is 40 kHz to 80 kHz.

[0081] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An electrosurgical instrument cleaning system comprising: Steam spray gun cleaning table, enzyme washing tank, ultrasonic tank, final washing tank, boiling tank, drying table, characterized in that the ultrasonic tank includes an ultrasonic generator, a medium and low frequency sound wave generator, a sound wave controller, a sound collector and a sound analyzer; characterized in that: the sound wave controller adopts a cyclic pulse sound wave control method to control the ultrasonic generator and the medium and low frequency sound wave generator to emit specific waveforms to complete cleaning; The cyclic pulsed acoustic wave control method comprises the following steps: S1, trial cleaning stage: using the medium and low frequency sound wave generator, the sound collector and the sound analyzer to determine the resonance frequency of the cleaned object; S2. The medium and low frequency sound wave generator induces resonance: the medium and low frequency sound wave generator is started; the sound wave controller controls the medium and low frequency sound wave generator to emit sound waves of a specific frequency according to a linear increasing formula; the linear increasing formula satisfies: Among them, p(t) is the sound wave frequency emitted by the medium and low frequency sound wave generator at time [t], T is the cycle period time of the medium and low frequency sound wave generator, p start and p end respectively represent the starting frequency and the ending frequency of the medium and low frequency sound wave, [t] is the remainder obtained by dividing the real time t by the cycle period time T of the medium and low frequency sound wave generator, satisfying: [t] = t - j·T and 0 ≤ [t] < T, where j is the number of cycles and is a natural number; S3, the ultrasonic generator applies pulsed ultrasonic waves: the ultrasonic generator is controlled in conjunction with the medium and low frequency acoustic wave generator under the control of the acoustic wave controller; specifically, When the frequency of the medium and low frequency sound wave generator is within the range of plus or minus 10% of the resonant frequency of the cleaned object, the ultrasonic generator emits an ultrasonic wave of the first decibel; When the frequency of the medium and low frequency sound wave generator is not within the range of plus or minus 10% of the resonant frequency of the cleaned object, the ultrasonic generator emits an ultrasonic wave of the second decibel; The first decibel is greater than the second decibel; S4, cyclic cleaning: cyclically execute steps S2 and S3 until the preset cleaning time.

2. The electrosurgical instrument cleaning system according to claim 1, characterized in that: Step S1 specifically includes: S11, the medium and low frequency sound wave generator is in accordance with ([p start ,p end ],Δp,Δt) parameters send out cyclically increasing low-frequency sound waves as test sound waves; Δp represents the incremental frequency step of the sound wave, and Δt represents the application time of the low-frequency sound wave of each frequency; the kth test sound wave satisfies: p k =p start +kΔp; S12, the sound collector collects the sound signal of the cleaning tank and sends the sound signal to the sound analyzer; S13, the sound analyzer performs waveform analysis on the sound signal, determines the peak signals with decibels higher than those on both sides based on the waveform analysis, determines the strong wavelength division signal of the sound signal, and obtains a set of strong wavelength division signals {p k }; S14, for the adjacent strong wavelength division signal set {p k } and {p k+1 Perform difference calculation to determine the resonant frequency of the cleaned part; S15, determine the resonant frequency set of the cleaned part; based on the determination result of step S14, determine the resonant frequency set of the cleaned part {p co },satisfy: in, They represent the sequence of resonance frequencies of the cleaned object, with a maximum number of m.

3. The electrosurgical instrument cleaning system according to claim 2, characterized in that: In step S14, determining the resonance frequency of the object to be cleaned means: If satisfied: Then determine p k+1 It is not the resonant frequency of the part being cleaned; If satisfied: Then determine p k+1 is the resonant frequency of the part being cleaned; Among them, {p k+1 } indicates that the frequency of the medium and low frequency sound wave generator is p k+1 When the probe sound wave is detected, the strong wavelength division signal set determined based on the waveform analysis; {p k } indicates that the frequency of the medium and low frequency sound wave generator is p k When the probe sound wave is detected, a strong wavelength division signal set determined based on the waveform analysis; represents the empty set; satisfies: p k =p start +kΔp p k+1 =p start +(k+1)Δp in, are the frequencies of the strong wavelength division signals represented by the n peak signals of the acoustic signal collected under the kth test sound wave; are the frequencies of the strong wavelength division signals represented by a total of w peak signals of the acoustic signal collected under the k+1th trial sound wave, and n and w are both natural numbers.

4. The electrosurgical instrument cleaning system according to claim 1, characterized in that: Heaters are installed in the steam spray gun cleaning table and the boiling tank. The drying table is provided with a hot air gun that blows air toward the table surface. The hot air is filtered and sterilized.

5. The electrosurgical instrument cleaning system according to claim 4, characterized in that: The boiling tank uses pure water to perform boiling and disinfection, and also has a heating, soaking and rust removal function.

6. The electrosurgical instrument cleaning system according to claim 1, characterized in that: The electrosurgical instrument cleaning system has a stainless steel frame and is capable of being moved as a whole.

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