Multispectral imaging and automatic evaluation device for cleaning precision instruments
By combining multispectral imaging components with an automated evaluation system, the problem of insufficient detection in existing precision instrument cleaning devices has been solved, enabling precise cleaning quality control and standardized quality control, and reducing the risk of nosocomial infections.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SICHUAN CANCER HOSPITAL
- Filing Date
- 2026-01-08
- Publication Date
- 2026-04-17
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing precision instrument cleaning devices lack multispectral imaging and automatic evaluation technology, making it impossible to accurately detect microscopic residues and structural damage on the instrument surface in real time by penetrating the liquid. This results in highly subjective and inefficient cleanliness determination, which may lead to the risk of nosocomial infection.
Employing a multispectral imaging component and an automatic evaluation system, combined with intelligent algorithms from a data processor, it achieves non-contact scanning and real-time cleanliness assessment. The multispectral imager penetrates the cleaning fluid to scan instruments, and combined with a magnetic sealing structure and a vertical classification and placement system, it forms a closed-loop management system.
It enables precise control of cleaning quality, reduces the risk of nosocomial infection, improves the safety and efficiency of instrument reuse and cleaning efficiency, and ensures standardized cleanliness assessment.
Smart Images

Figure CN121869775A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of precision instrument cleaning, and more particularly to a multispectral imaging and automatic evaluation device for precision instrument cleaning. Background Technology
[0002] There are many types of precision instruments, among which the cleaning quality of medical precision instruments (such as surgical forceps, endoscopes, implants, etc.) is directly related to hospital infection control and patient safety. During cleaning, it is necessary to thoroughly remove organic matter such as blood, tissue residue, biofilm, and drug stains to prevent the growth of microorganisms; at the same time, it is necessary to eliminate physical damage (such as rust and cracks). The mainstream cleaning method for medical precision instruments is ultrasonic cleaning, which uses high-frequency vibration to peel off tiny dirt from the lumen and joint gaps.
[0003] Existing precision instrument cleaning devices have significant drawbacks in medical settings: While traditional ultrasonic cleaning can remove surface stains through high-frequency vibration, it lacks deep integration of multispectral imaging and automatic evaluation technologies. It cannot penetrate the liquid in real time to accurately detect microscopic residues (such as proteins and bloodstains) and structural damage (such as cracks and corrosion) on the instrument surface. Relying on manual visual inspection or sampling inspection is difficult to cover the complex structure of all instruments (such as lumens and joint gaps), resulting in highly subjective and inefficient cleanliness determination. If contaminant residues in hidden areas are not identified before entering the subsequent sterilization process, the risk of nosocomial infection may be caused by incomplete cleaning. Summary of the Invention
[0004] The technical problem to be solved by this invention is to provide a multispectral imaging and automatic evaluation device for cleaning precision instruments to address the significant shortcomings of existing precision instrument cleaning devices in medical settings: Although traditional ultrasonic cleaning can remove surface stains through high-frequency vibration, it lacks deep integration of multispectral imaging and automatic evaluation technology. It cannot penetrate the liquid in real time to accurately detect microscopic residues (such as protein and blood stains) and structural damage (such as cracks and corrosion) on the instrument surface. Relying on manual visual inspection or sampling inspection is difficult to cover the complex structure of all instruments (such as lumens and joint gaps), resulting in strong subjectivity and low efficiency in cleanliness determination. If contaminant residues in hidden areas are not identified before entering the subsequent sterilization process, the risk of nosocomial infection may be caused by incomplete cleaning.
[0005] To address the aforementioned problems, the present invention is implemented through the following technical solution.
[0006] A multispectral imaging and automatic evaluation device for cleaning precision instruments includes: an ultrasonic cleaner, an inlet pipe on one side of the ultrasonic cleaner, an outlet pipe on the side of the ultrasonic cleaner away from the inlet pipe, a cleaning tank inside the ultrasonic cleaner, an observation chamber inside the ultrasonic cleaner corresponding to the cleaning tank, an instrument mounting assembly inside the cleaning tank, a movable auxiliary observation assembly inside the observation chamber, and a multispectral imaging assembly on the side of the movable auxiliary observation assembly away from the instrument mounting assembly. The multispectral imaging assembly is used to observe the cleaning tank, and the movable auxiliary observation assembly is used to seal the ultrasonic cleaner and has a reserved observation port for observation by the multispectral imaging assembly.
[0007] In one embodiment, a limiting pad is bonded to the bottom of the ultrasonic cleaner, and the limiting pad is made of rubber. The ultrasonic cleaner has an opening and closing cover at the upper end of the cleaning tank, and a connecting hinge is provided on one side of the opening and closing cover. The opening and closing cover is connected to the ultrasonic cleaner through the connecting hinge. The ultrasonic cleaner has a side cover plate at the upper end of the cleaning tank.
[0008] In one embodiment, the vertical instrument placement assembly includes a side plate, a vertical frame, a partition box, a water inlet, and a sludge storage box. The side plate is disposed on the upper end of the cleaning tank of the ultrasonic cleaner. The vertical frame is supported on one side of the side plate, and the sludge storage box is provided at the bottom of the vertical frame.
[0009] In one embodiment, the vertical frame is provided with no less than five sets of sludge storage boxes at equal intervals along its longitudinal direction on the side closest to the multispectral imaging component, and the vertical frame and the sludge storage boxes are provided with a series of water passage holes arranged in an array.
[0010] In one embodiment, the active auxiliary observation component includes a hydraulic rod, a telescopic rod, a pressing plate, a first embedded magnetic sheet, a movable frame plate, a second embedded magnetic sheet, an observation glass plate, and a sealing ring. The driving end of the hydraulic rod is provided with a telescopic rod, and the other end of the hydraulic rod is welded and fixed to the inner wall of the ultrasonic cleaner.
[0011] In one embodiment, four sets of hydraulic rods and telescopic rods are provided, and a pressing plate is provided on the side of the four telescopic rods away from the hydraulic rods. A first embedded magnetic sheet is embedded on the side of the pressing plate away from the telescopic rods.
[0012] In one embodiment, a movable frame plate is provided on the side of the pressing plate away from the telescopic rod, and a second embedded magnetic sheet is embedded on one side of the movable frame plate at the position corresponding to the first embedded magnetic sheet. An observation glass plate is embedded on the inner side of the movable frame plate, and a sealing ring is provided on the side of the movable frame plate away from the pressing plate.
[0013] In one embodiment, an arc-shaped groove is provided on one side of the observation chamber of the ultrasonic cleaner corresponding to the contact surface of the sealing ring, and the shape and structure of the arc-shaped groove completely match the shape and structure of the arc surface of the sealing ring.
[0014] In one embodiment, the multispectral imaging assembly includes a mounting frame, a shock-absorbing pad, a limiting protrusion, and a multispectral imager. The shock-absorbing pad is bonded to the inner side of the mounting frame, and multiple limiting protrusions are evenly distributed in an array on the inner side of the shock-absorbing pad. The multispectral imager is located inside the limiting protrusions. The imaging end of the multispectral imager faces the ultrasonic cleaner, and an insertion through hole is opened on one side of the ultrasonic cleaner for the multispectral imager to insert and observe.
[0015] In one embodiment, the ultrasonic cleaner has an observation window on the side with the arc-shaped groove, and the surface area of the observation window is smaller than the surface area of the observation glass plate. A data processor is provided on one side of the front end of the ultrasonic cleaner, and a display screen is provided in the middle of the front end of the ultrasonic cleaner.
[0016] This invention provides a multispectral imaging and automatic evaluation device for cleaning precision instruments. Compared with the prior art, it has the following advantages: Through the synergistic effect of multispectral imaging components and an automatic evaluation system, precise control of the cleaning quality of medical precision instruments is achieved. The multispectral imager can penetrate the cleaning fluid to perform non-contact scanning of vertically placed instruments, capturing in real time the characteristics of contaminants such as protein residues and micro-cracks. Combined with the intelligent algorithm of the data processor, it quickly determines the cleanliness level (such as AO value) and provides real-time feedback on the display screen. If an abnormality is detected, the cleaning process is automatically optimized, forming a closed-loop management of cleaning monitoring followed by cleaning. At the same time, the magnetic sealing structure ensures the waterproofness of the observation environment, the shock-absorbing design ensures the stability of imaging, the vertical classification and placement system avoids collision damage to instruments, and the vertical arrangement of precision instruments to be cleaned facilitates the acquisition of images by the multispectral imager 1204. Ultimately, it achieves the unity of efficient decontamination and standardized quality control, significantly reducing the risk of nosocomial infection and improving the safety of instrument reuse. Attached Figure Description
[0017] Figure 1 This is a frontal stereoscopic structural diagram of a multispectral imaging and automatic evaluation device used for cleaning precision instruments.
[0018] Figure 2 This is a rear-view stereoscopic structural diagram of a multispectral imaging and automatic evaluation device used for cleaning precision instruments.
[0019] Figure 3 A top-view stereoscopic structure diagram of a multispectral imaging and automatic evaluation device for cleaning precision instruments after removing the opening and closing cover and side cover.
[0020] Figure 4 A rear-view stereoscopic structure diagram of a multispectral imaging and automatic evaluation device for cleaning precision instruments after removing the opening and closing cover and side cover.
[0021] Figure 5 This is a frontal stereoscopic view of the active auxiliary observation component of a multispectral imaging and automatic evaluation device used for cleaning precision instruments.
[0022] Figure 6 This is a rear-view stereoscopic structure diagram of the active auxiliary observation component of a multispectral imaging and automatic evaluation device used for cleaning precision instruments.
[0023] Figure 7 A schematic diagram of the instrument mounting assembly structure for a multispectral imaging and automatic evaluation device used for cleaning precision instruments.
[0024] The attached figures are labeled as follows: 1. Ultrasonic cleaner; 2. Inlet pipe; 3. Outlet pipe; 4. Limiting base pad; 5. Connecting hinge; 6. Opening / closing cover; 7. Side cover plate; 8. Erecting instrument mounting assembly; 801. Side support plate; 802. Erecting frame; 803. Dividing mounting box; 804. Water passage hole; 805. Sludge storage box; 9. Observation chamber; 10. Movable auxiliary observation assembly; 1001. Hydraulic rod; 1002. Telescopic rod; 1003. Pressing plate; 100 4. First embedded magnetic sheet; 1005. Movable frame plate; 1006. Second embedded magnetic sheet; 1007. Observation glass plate; 1008. Sealing ring; 11. Arc groove; 12. Multispectral imaging component; 1201. Mounting frame; 1202. Shock-absorbing pad; 1203. Limiting protrusion; 1204. Multispectral imager; 13. Probe through hole; 14. Data processor; 15. Display screen; 16. Cleaning tank; 17. Observation window. Detailed Implementation
[0025] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.
[0026] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
[0027] Reference Figures 1-7A multispectral imaging and automatic evaluation device for cleaning precision instruments includes: an ultrasonic cleaner 1, an inlet pipe 2 on one side of the ultrasonic cleaner 1, an outlet pipe 3 on the side of the ultrasonic cleaner 1 away from the inlet pipe 2, a cleaning tank 16 inside the ultrasonic cleaner 1, an observation chamber 9 on the side of the ultrasonic cleaner 1 corresponding to the cleaning tank 16, an upright instrument mounting component 8 inside the cleaning tank 16, a movable auxiliary observation component 10 inside the observation chamber 9, and a multispectral imaging component 12 on the side of the movable auxiliary observation component 10 away from the upright instrument mounting component 8. The multispectral imaging component 12 is used to observe the cleaning tank 16, and the movable auxiliary observation component 10 is used to seal the ultrasonic cleaner 1 and has a reserved observation port for observation by the multispectral imaging component 12.
[0028] The ultrasonic cleaner 1 has a limiting pad 4 bonded to the bottom, and the limiting pad 4 is made of rubber. The ultrasonic cleaner 1 has an opening and closing cover 6 at the upper end of the cleaning tank 16, and a connecting hinge 5 is provided on one side of the opening and closing cover 6. The opening and closing cover 6 is connected to the ultrasonic cleaner 1 through the connecting hinge 5. The ultrasonic cleaner 1 has a side cover plate 7 at the upper end of the cleaning tank 16.
[0029] The vertical instrument placement assembly 8 includes a side plate 801, a vertical frame 802, a partition box 803, a water passage 804, and a sludge storage box 805. The side plate 801 is located on the upper end of the cleaning tank 16 of the ultrasonic cleaner 1. The vertical frame 802 is supported on one side of the side plate 801, and the sludge storage box 805 is located at the bottom of the vertical frame 802.
[0030] The vertical frame 802 is provided with no less than five sets of sludge storage boxes 805 at equal intervals along its longitudinal direction on the side closest to the multispectral imaging component 12. Multiple water passage holes 804 are distributed through the internal array of the vertical frame 802 and the sludge storage boxes 805.
[0031] The activity auxiliary observation component 10 includes a hydraulic rod 1001, a telescopic rod 1002, a pressing plate 1003, a first embedded magnetic sheet 1004, a movable frame plate 1005, a second embedded magnetic sheet 1006, an observation glass plate 1007, and a sealing ring 1008. The driving end of the hydraulic rod 1001 is provided with the telescopic rod 1002, and the other end of the hydraulic rod 1001 is welded and fixed to the inner wall of the ultrasonic cleaner 1.
[0032] The hydraulic rod 1001 and the telescopic rod 1002 are provided in four sets, and the four telescopic rods 1002 are provided with a pressing plate 1003 on the side away from the hydraulic rod 1001. The pressing plate 1003 is embedded with a first embedded magnetic sheet 1004 on the side away from the telescopic rod 1002.
[0033] A movable frame plate 1005 is provided on the side of the pressing plate 1003 away from the telescopic rod 1002, and a second embedded magnetic sheet 1006 is embedded on one side of the movable frame plate 1005 corresponding to the position of the first embedded magnetic sheet 1004. An observation glass plate 1007 is embedded on the inner side of the movable frame plate 1005, and a sealing ring 1008 is provided on the side of the movable frame plate 1005 away from the pressing plate 1003.
[0034] An arc-shaped groove 11 is provided on one side of the observation chamber 9 of the ultrasonic cleaner 1, corresponding to the contact surface of the sealing ring 1008. The shape and structure of the arc-shaped groove 11 are completely matched with the arc-shaped surface shape and structure of the sealing ring 1008.
[0035] The multispectral imaging assembly 12 includes a mounting frame 1201, a shock-absorbing pad 1202, a limiting protrusion 1203, and a multispectral imager 1204. The shock-absorbing pad 1202 is bonded to the inner side of the mounting frame 1201, and multiple limiting protrusions 1203 are evenly distributed in an array on the inner side of the shock-absorbing pad 1202. The multispectral imager 1204 is located inside the limiting protrusion 1203. The imaging end of the multispectral imager 1204 faces the ultrasonic cleaner 1, and an insertion through hole 13 is opened on one side of the ultrasonic cleaner 1 for the multispectral imager 1204 to insert and observe.
[0036] The ultrasonic cleaner 1 has an observation window 17 on one side with an arc groove 11, and the surface area of the observation window 17 is smaller than the surface area of the observation glass plate 1007. The ultrasonic cleaner 1 has a data processor 14 on one side of the front end, and a display screen 15 in the middle of the front end.
[0037] During use, the vertical instrument placement assembly 8 vertically fixes the precision instruments to be cleaned in the cleaning tank 16. Each precision instrument is placed individually in the partitioned placement box 803 on one side of the vertical frame 802 to prevent collisions during cleaning. One side of the vertical frame 802 rests against the side plate 801, and the bottom side of the vertical frame 802 rests against the inside of the sludge storage box 805. The hinge 5 closes the opening and closing cover 6, and the water passage 804 ensures water flow through the instrument surface. The sludge storage box 805 is located at the bottom of the ultrasonic cleaner 1. The partitioned placement box 803 stores different instruments in categories. When the ultrasonic cleaner 1 starts, it generates high-frequency vibration. Clean water enters the ultrasonic cleaner 1 through the inlet pipe 2 and then discharges wastewater through the outlet pipe 3. The ultrasonic cleaning process... The bottom of the ultrasonic cleaner 1 has a rubber limiting pad 4, which can buffer the vibration of the ultrasonic cleaner 1 and enhance the friction between the ultrasonic cleaner 1 and the ground to prevent the ultrasonic cleaner 1 from shifting. An observation chamber 9 is opened on the side of the ultrasonic cleaner 1 corresponding to the cleaning tank 16. The upper end of the observation chamber 9 is provided with a side cover plate 7 corresponding to the outer side of the ultrasonic cleaner 1 to prevent dust accumulation on the movable auxiliary observation component 10. The cleaning tank 16 is provided with a vertical instrument placement component 8. The movable auxiliary observation component 10 is provided with a multispectral imaging component 12 on the side away from the vertical instrument placement component 8. The multispectral imager 1204 performs multi-band scanning of the cleaning tank 16 through the probe hole 13, penetrating the liquid to capture the residue (such as protein, blood stains) and microscopic particles on the surface of the instruments. Damage is prevented when the observation glass plate 1007 is aligned with the observation window 17 inside the ultrasonic cleaner 1. The interlocking design of the sealing ring 1008 and the arc-shaped groove 11 ensures both waterproofing and unobstructed imaging optical path. When cleaning the observation glass plate 1007 is required, the ultrasonic cleaner 1 stops operating, the hydraulic rod 1001 drives the telescopic rod 1002, pulling back the pressing plate 1003 and the movable frame plate 1005. The first embedded magnetic sheet 1004 and the second embedded magnetic sheet 1006 are magnetically fixed, allowing the movable frame plate 1005 to be directly separated from the pressing plate 1003 and removed, along with the embedded observation glass plate 1007, for cleaning. This avoids affecting the scanning imaging of the multispectral imager 1204 for evaluation. The images acquired by the multispectral imager 1204 are analyzed and evaluated by the data processor 14. The cleanliness level (such as AO value) is determined by a preset algorithm, and the results are displayed on the display screen 15 in real time. If an abnormality is detected (such as excessive residue), the system can trigger an automatic extension of the cleaning time to form a closed-loop quality control. The vertical instrument placement component 8 arranges the precision instruments to be cleaned longitudinally to facilitate image acquisition by the multispectral imager 1204. The multispectral imager 1204 is placed by pushing it into the inside of the placement frame 1201 until the imaging end of the multispectral imager 1204 enters the probe through hole 13 to complete the installation. The shock-absorbing pad 1202 and the limiting protrusion point 1203 ensure the stability of the imager and reduce the impact of mechanical vibration on the detection results.
[0038] Therefore, although the invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the scope of the foregoing disclosure, and it should be understood that in some cases, certain features of the invention may be adopted without departing from the scope and spirit of the invention and without corresponding use of other features. Thus, many modifications can be made to adapt a particular environment or material to the essential scope and spirit of the invention. The invention is not intended to be limited to the specific terminology used in the following claims and / or the specific embodiments disclosed as the best mode for carrying out the invention, but the invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the invention will be defined only by the appended claims.
Claims
1. A multispectral imaging and automated assessment device for precision instrument cleaning, characterized by, include: An ultrasonic cleaner (1) is provided with an inlet pipe (2) on one side and an outlet pipe (3) on the side away from the inlet pipe (2). A cleaning tank (16) is provided inside the ultrasonic cleaner (1). An observation chamber (9) is provided on the side of the cleaning tank (16) inside the ultrasonic cleaner (1). An upright instrument placement assembly (8) is provided inside the cleaning tank (16). An active auxiliary observation assembly (10) is provided inside the observation chamber (9). A multispectral imaging assembly (12) is provided on the side of the active auxiliary observation assembly (10) away from the upright instrument placement assembly (8). The multispectral imaging assembly (12) is used to observe the cleaning tank (16). The active auxiliary observation assembly (10) is used to seal the ultrasonic cleaner (1) and reserve an observation port for observation by the multispectral imaging assembly (12).
2. A multi-spectral imaging and automated assessment device for precision instrument cleaning according to claim 1, characterized in that, The ultrasonic cleaner (1) has a limiting pad (4) bonded to the bottom, and the limiting pad (4) is made of rubber. The ultrasonic cleaner (1) has an opening and closing cover (6) at the upper end of the cleaning tank (16), and a connecting hinge (5) is provided on one side of the opening and closing cover (6). The opening and closing cover (6) is connected to the ultrasonic cleaner (1) through the connecting hinge (5). The ultrasonic cleaner (1) has a side cover plate (7) at the upper end of the cleaning tank (16).
3. The multispectral imaging and automatic evaluation device for cleaning precision instruments according to claim 2, characterized in that, The vertical instrument placement assembly (8) includes a side plate (801), a vertical frame (802), a partition box (803), a water passage (804), and a sludge storage box (805). The side plate (801) is located on the upper end of the cleaning tank (16) of the ultrasonic cleaner (1). The vertical frame (802) is supported on one side of the side plate (801), and the sludge storage box (805) is provided at the bottom of the vertical frame (802).
4. The multispectral imaging and automatic evaluation device for cleaning precision instruments according to claim 3, characterized in that, The vertical frame (802) has at least five sets of sludge storage boxes (805) arranged longitudinally and equidistantly on the side near the multispectral imaging component (12). The vertical frame (802) and the sludge storage boxes (805) have multiple water holes (804) arranged in an array inside.
5. A multispectral imaging and automatic evaluation device for cleaning precision instruments according to claim 4, characterized in that, The active auxiliary observation component (10) includes a hydraulic rod (1001), a telescopic rod (1002), a pressing plate (1003), a first embedded magnetic sheet (1004), an active frame plate (1005), a second embedded magnetic sheet (1006), an observation glass plate (1007), and a sealing ring (1008). The driving end of the hydraulic rod (1001) is provided with a telescopic rod (1002), and the other end of the hydraulic rod (1001) is welded and fixed to the inner wall of the ultrasonic cleaner (1).
6. The multispectral imaging and automatic evaluation device for cleaning precision instruments according to claim 5, characterized in that, The hydraulic rod (1001) and telescopic rod (1002) are provided in four sets, and the four telescopic rods (1002) are provided with a pressing plate (1003) on the side away from the hydraulic rod (1001). The pressing plate (1003) is provided with a first embedded magnetic sheet (1004) on the side away from the telescopic rod (1002).
7. A multispectral imaging and automatic evaluation device for cleaning precision instruments according to claim 6, characterized in that, The pressing plate (1003) is provided with a movable frame plate (1005) on the side away from the telescopic rod (1002), and a second embedded magnetic sheet (1006) is embedded on one side of the movable frame plate (1005) at the position corresponding to the first embedded magnetic sheet (1004). An observation glass plate (1007) is embedded on the inner side of the movable frame plate (1005), and a sealing ring (1008) is provided on the side of the movable frame plate (1005) away from the pressing plate (1003).
8. The multispectral imaging and automatic evaluation device for cleaning precision instruments according to claim 1, characterized in that, An arc-shaped groove (11) is provided on one side of the observation chamber (9) of the ultrasonic cleaner (1) corresponding to the contact surface of the sealing ring (1008). The shape and structure of the arc-shaped groove (11) are completely matched with the arc-shaped surface shape and structure of the sealing ring (1008).
9. A multispectral imaging and automatic evaluation device for cleaning precision instruments according to claim 1, characterized in that, The multispectral imaging component (12) includes a mounting frame (1201), a shock-absorbing pad (1202), a limiting protrusion (1203), and a multispectral imager (1204). The mounting frame (1201) is bonded to the inner side with a shock-absorbing pad (1202), and multiple limiting protrusions (1203) are evenly distributed in an array on the inner side of the shock-absorbing pad (1202). The multispectral imager (1204) is located inside the limiting protrusion (1203). The imaging end of the multispectral imager (1204) faces the ultrasonic cleaner (1), and an insertion through hole (13) is opened on one side of the ultrasonic cleaner (1). The insertion through hole (13) is used for the multispectral imager (1204) to insert and observe.
10. A multispectral imaging and automatic evaluation device for cleaning precision instruments according to claim 1, characterized in that, The ultrasonic cleaner (1) has an observation window (17) on one side with an arc groove (11), and the surface area of the observation window (17) is smaller than the surface area of the observation glass plate (1007). The ultrasonic cleaner (1) has a data processor (14) on one side of the front end, and a display screen (15) is provided in the middle of the front end.