JP2001340337A - Ultrasonic observing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ultrasonic observing device wherein a general purpose PC board on the market, a large amount of which is generally sold, can be properly used, an unnecessary radiation generated from the PC board section is prevented from being emitted to the outside of a box body from an opening (electrical) of the box body, which has been conventionally inevitable in the ensuring of an international standard of electrical safety regulations for medical applications, which is safe in medical applications, of which the cost is low, and of which the extension property is high. SOLUTION: The PC section 38 and a bulkhead 50 for suppressing the unnecessary radiation are provided in the box body 30. In this case, the bulkhead 50 separates from the other electric circuit sections such as a transmitting/ receiving circuit unit 37, a power source unit 36, and round/square connectors 28 and 29, and suppresses the unnecessary radiation from the PC section 38 from creeping along the other electric circuit section side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic observation apparatus for mechanically scanning an ultrasonic transducer, receiving and detecting an echo signal obtained at this time, and performing ultrasonic observation.

[0002]

2. Description of the Related Art Generally, an ultrasonic endoscope having a mechanism for mechanically scanning an ultrasonic vibrator, an ultrasonic probe, and an ultrasonic vibrator driven at an arbitrary timing while being mechanically scanned. A transmitting and receiving unit that transmits ultrasonic waves from the ultrasonic transducer, receives and detects the echo signals obtained at this time, and outputs the received signals as analog signal reception data, and reception data of analog signals output from the transmission and reception unit. There is known an ultrasonic observation apparatus provided with a computer unit for performing signal processing on a signal.

[0003] Further, the present applicant has proposed to reduce the size and cost of this type of ultrasonic observation apparatus and to facilitate the addition of functions.
Japanese Patent Application Nos. Hei 11-093212 and Hei 11-3073
As shown in No. 46, a so-called personal computer base (hereinafter abbreviated as a PC base) in which functions such as a conventional dedicated coordinate conversion circuit, interpolation circuit, controller and the like are performed by a computer board incorporated in the apparatus main body. )). The advantage of using a PC base is that it can supply an ultra-sound observation device that is highly scalable by updating the hardware of standard and inexpensive general-purpose PC boards and by changing and upgrading application software. Therefore, it is considered that the ultrasonic observation apparatus will become the mainstream in the future.

FIGS. 8 and 9 show a schematic configuration of a PC-based ultrasonic observation apparatus a. Here, the power supply unit c and the inside of the housing b of the ultrasonic observation device a,
Various electric circuit components such as the PC board section d are incorporated. Further, on the front panel e of the housing b, a round ultrasonic device connector f and a square ultrasonic device connector g serving as a patient circuit are disposed. The connector f is connected to a device such as an ultrasonic endoscope that is inserted into a patient's body cavity and diagnosed, and the connector g is
Devices such as an ultrasonic probe for making a diagnosis by contacting the patient's body surface are connected.

[0005]

In the above-mentioned conventional configuration, since it is mainly composed of a commercially available general-purpose PC board, EMC is used.
(Electromagnetic environment compatibility) It was difficult to take measures against noise. For example, decaps (bypass capacitors), which are commonly adopted as electrically effective noise countermeasures, and the technology of mounting ferrite beads on PC boards, are guaranteed by the manufacturer of the PC board at the time of purchase by modifying the PC board. May not be available.

[0006] In addition to the above, a medical PC-based ultrasonic observation apparatus has a significant disadvantage in terms of noise suppression as compared with other general PC-based equipment. That is, in a medical PC-based ultrasonic observation apparatus, IEC Publica, which is an international standard of medical electrical equipment safety rules, is used in medical procedures to avoid accidental electric shock of patients.
It is necessary to adopt the creepage distance and the space distance specified in the Tion 60601-1 in the housing of the ultrasonic observation apparatus.
As a result, the unnecessary radiation generated from the PC
There is a possibility that radiation will be emitted outside the housing from the opening of the housing for ensuring the specified distance of the EC standard.

For example, when a power supply unit c having a basic voltage of 250 VAC and a base insulation or a reinforced insulation is incorporated in a housing b of an ultrasonic observation apparatus a, the ultrasonic observation apparatus is applied by applying the IEC standard. A space distance of 2.5 mm and a creepage distance of 4 mm between metal parts such as the outer surface of the casing b of FIG. It is necessary to secure space. In addition, double insulation at a reference voltage of 250 VAC,
Alternatively, when the reinforced insulated power supply unit c is used, the exterior of the housing b of the ultrasonic observation apparatus a corresponds to a secondary circuit, and is provided between the exterior of the housing b and the metal parts of the ultrasonic device connection connectors f and g. In addition, it is necessary to secure a space of 5 mm in space distance and 8 mm in creepage distance. And these spaces are shown in FIG.
As shown in FIG. 7, the electric opening h is formed, and the PC board d is formed.
This causes unnecessary radiation generated from the electric opening h to be radiated out of the housing b from the electric opening h.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and its object is to appropriately use a general-purpose general-purpose PC board which is generally available in large quantities, and to reduce unnecessary radiation generated from the PC board section. However, it can be prevented from being radiated out of the housing from the housing opening (electrical), which has been inevitable in securing the international standard of medical electrical safety rules, and is medically safe and low cost. Another object of the present invention is to provide an ultrasonic observation apparatus having high expandability.

[0009]

According to the present invention, an ultrasonic transducer is mechanically scanned, the ultrasonic transducer is driven at an arbitrary timing to transmit an ultrasonic wave, and the ultrasonic wave obtained at this time is obtained. A transmission / reception unit that receives and detects an echo signal and outputs the data as reception data of an analog signal, and a computer unit that performs signal processing on the reception data of the analog signal output from the transmission / reception unit. In the ultrasonic observation apparatus for sound wave observation, unnecessary radiation from the computer unit and another electric circuit unit are separated to suppress unnecessary radiation from the computer unit from flowing to the other electric circuit unit side. An ultrasonic observation apparatus, wherein a suppression member is provided in the case. In the present invention, the unnecessary radiation suppressing member in the case separates the computer section from the other electric circuit section and suppresses unnecessary radiation from the computer section from flowing to the other electric circuit section. Here, the unnecessary radiation suppressing member itself and a contact portion or an assembling portion to the case have conductivity, and the unnecessary radiation generated in the computer section is transmitted to other electric circuit parts by the partition shield by the unnecessary radiation suppressing member. It is intended to suppress the sneaking in and prevent unnecessary radiation from being radiated out of the case from the electrical opening of the case which is unavoidable in ensuring medical electrical safety.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a medical apparatus 2 including a PC-based ultrasonic observation apparatus 1 according to the present embodiment.
1 shows a schematic configuration of the entire system.

The system of the medical apparatus 2 including the PC-based ultrasonic observation apparatus 1 of the present embodiment includes a mechanical scanning ultrasonic endoscope (hereinafter, abbreviated as an ultrasonic endoscope) 3. A light source device 4 for supplying illumination light for illuminating an observation site to the illumination optical system of the ultrasonic endoscope 3, and a PC according to the present embodiment.
It is mainly composed of a base ultrasonic observation apparatus 1 and a display apparatus 5 connected to the ultrasonic observation apparatus 1 and displaying an ultrasonic diagnostic image.

In FIG. 1, reference numeral 6 denotes a trolley on which the system of the medical device 2 having the ultrasonic observation apparatus 1 of the present embodiment is mounted and transported, and reference numeral 7 denotes a caster of the trolley 6. Here, the trolley 6 is provided with a plurality of stages of mounting shelves 7. The medical instruments such as the ultrasonic observation apparatus 1 of the present embodiment and the light source device 4 are mounted on each mounting shelf 7 of the trolley 6.

Further, a work table 8 is provided above the trolley 6. The work table 8 is provided with a keyboard 9 as an input device, and a display device 5 is mounted via a support base 10. The keyboard 9 is connected to the ultrasonic observation apparatus 1 so that a patient ID can be input, image quality can be adjusted, and the like.

A plurality of holding grooves 11 for holding the treatment tool are formed at the edge of the work table 8. Then, an ultrasonic probe 1 for making a diagnosis by contacting the patient's body surface
Treatment tools 2 and 13 are held in each holding groove 11.

The ultrasonic endoscope 3 includes an elongated insertion portion 14 inserted into a body cavity, an operation portion 15 connected to a base end of the insertion portion 14, and a base end of the operation portion 15. And an eyepiece section 16 provided in the section. Further, one end of the universal cord 17 is connected to the side of the operation unit 15. A connector 18 is connected to the other end of the universal cord 17. Also, connector 1
One end of an ultrasonic cable 19 is connected to the side of the cable 8. An ultrasonic connector 20 is connected to the other end of the ultrasonic cable 19.

Further, the insertion section 14 of the ultrasonic endoscope 3
A flexible tube portion 21 having a small diameter, a long length and flexibility, a bendable bending portion 22 having a base end portion connected to a distal end portion of the flexible tube portion 21, and a distal end portion of the bending portion 22; And the distal end hard portion 23 connected to the end portion is continuously provided. Here, the proximal end of the flexible tube 21 is connected to the distal end of the operation unit 15.

A mechanical scanning type ultrasonic vibrator unit (ultrasonic transmitting / receiving unit) 24 is provided at the distal end of the rigid distal end portion 23. In addition, as a material of the distal end hard portion 23, a resin member such as polysulfone having good chemical resistance and biocompatibility is used.

Further, the operation section 15 is provided with an air supply / water supply button 25 for performing an air supply / water supply operation, and a suction button 26 for performing a suction operation. An angle knob (not shown) for controlling the bending in the direction is provided.

The light source device 4 is provided with a connector 27 for an endoscope. This endoscope connector 2
A connector 18 of a universal cord 17 of the ultrasonic endoscope 3 is detachably connected to 7. The ultrasonic endoscope 3 and the light source device 4 are configured to be detachable via the connector 18 of the universal cord 17.

Further, the ultrasonic observation apparatus 1 is provided with a round ultrasonic device connector 28 and a square ultrasonic device connector 29. The ultrasonic connector 20 of the ultrasonic endoscope 3 is connected to the circular ultrasonic device connector 28.
Are detachably connected. In addition, devices such as ultrasonic probes 12 and 13 for making a diagnosis by contacting the body surface of a patient are detachably connected to the rectangular ultrasonic device connector 29.

The ultrasonic probes 12, 13
Is a so-called extracorporeal treatment tool that does not require connection with the light source device 4 and is not used orally unlike the endoscope 3. In addition, each of the ultrasonic probes 12 and 13
Each of the distal treatment sections 12a and 13a is formed in a different shape so as to be suitable for diagnosis of an application site. further,
Square connectors 12b and 13b are connected to the base ends of the ultrasonic probes 12 and 13, respectively. Then, the connector 12 of each of the ultrasonic probes 12 and 13 is connected.
b or 13b is selectively used in the ultrasonic observation apparatus 1
The connector is detachably connected to the square ultrasonic device connector 29 of FIG.

The ultrasonic observation apparatus 1 is provided with a box-shaped housing (case) 30 as shown in FIG. As shown in FIG. 3, a front chassis 32 made of sheet metal is attached to the housing 30 in front of a chassis 31 made of sheet metal. Similarly, a rear panel 33 made of sheet metal is attached to the rear side of the chassis 31. A front panel 34 made of resin is attached to the front chassis 32 with a tapping screw (not shown). Further, a top cover 35 made of sheet metal is detachably attached to the upper surface of the housing 30.

In the housing 30, a power supply unit 36 is provided.
And, while generating a drive signal for generating ultrasonic waves,
A transmission / reception circuit unit (transmission / reception unit) 37 for performing signal processing on the received ultrasonic signal, and a PC (computer) 38 for performing signal processing on reception data of an analog signal output from the transmission / reception circuit unit 37 are incorporated. . Here, the power supply unit 36 is attached to the chassis 31. Further, on the top surface of the power supply unit 36, a transmission / reception circuit unit 37 and a back substrate 39 provided with various output connectors are attached.

The PC section 38 is arranged on the side of the power supply unit 36 so as to face the same. As shown in FIG. 3, the PC section 38 includes a plurality of extension boards, for example, a CPU board 41 and a video board 42 connected to a PCI standard connector on a backplane 40 attached to the chassis 31.
An A / D conversion board 43 is provided.
A plurality of extension boards, for example, a serial extension board 44 and an encoder board 45 connected to a connector of the SA standard
Are provided.

Further, the front chassis 32 includes a PC
A fan 46 for cooling the unit 38 by air is attached. The fan 46 sucks air from a duct (not shown) provided on the back surface of the front panel 34.

The front panel 34 has a circular ultrasonic device connector 28 on the upper side and a square ultrasonic device connector 2 below the circular ultrasonic device connector 28.
9 are arranged respectively. Here, a holding plate 47 for holding a connector is attached to the chassis 31. The upper circular ultrasonic device connector 28 is attached to the holding plate 47. Further, the rectangular ultrasonic device connector 29 is fixed to the front chassis 32 with screws (not shown).

Further, inside the housing 30 of the ultrasonic observation apparatus 1, a PC section 38 and other electric circuit sections (the power supply unit 3) are provided.
6 and the transmission / reception circuit unit 37), a conductive partition wall (unnecessary radiation suppressing member) 50 is attached. The partition wall 50 separates the PC section 38 from another electric circuit section so as to suppress unnecessary radiation from the PC section 38 from flowing to the other electric circuit section. I have.

As shown in FIG. 6, a sponge-like gasket 51 is attached to a joint between the front end of the partition 50 and the front chassis 32. Further, a spot welded portion 52 spot-welded at a joint between the lower end of the bulkhead 50 and the chassis 31, a screwed portion 53 at a joint between the rear end of the bulkhead 50 and the rear panel 33, and an upper end of the bulkhead 50 A finger portion 54 having elasticity is provided at a joint portion between the upper cover 35 and the top cover 35. These joints allow conduction between the partition 50 and the front chassis 32, the chassis 31, the rear panel 33, and the top cover 35, which are the respective sheet metal members of the housing 30. The partition wall 50 is formed with a hole 56 having a minimum necessary size through which a cable 55 for feeding power from the power supply unit 36 to the back plane 40 passes.

Further, as shown in FIG. 4, the front panel 34 of the ultrasonic observation apparatus 1 has a main switch 57, a membrane sheet 58, a pilot lamp 59, a hard disk access lamp 60, and a round / square connector. A power supply switch 61 is provided.

In the housing 30, a hard disk 62, a memory board 63, and the like are incorporated on the PC section 38 side. Further, the rear panel 33 of the housing 30 has an inlet 64, a breaker 65,
A power supply fan 66, a PC board bracket 67 and the like are provided, and a plurality of ventilation holes 68 are formed.

Next, the operation of the above configuration will be described.
When performing ultrasonic diagnosis with the PC-based ultrasonic diagnostic apparatus 1 of the present embodiment, first, the main switch 57 is turned on to start up the apparatus main body of the ultrasonic diagnostic apparatus 1, and the ultrasonic wave of the ultrasonic endoscope 3 is started. The connector 20 is connected to the circular ultrasonic device connector 28 of the ultrasonic diagnostic apparatus 1. At this time, the terminal of the circular ultrasonic device connection connector 28 comes into contact with the terminal of the ultrasonic connector 20 of the ultrasonic endoscope 3, and the ultrasonic endoscope 3 is electrically connected to the ultrasonic diagnostic apparatus 1. You.

Similarly, the square-shaped ultrasonic device connector 29 of the ultrasonic diagnostic apparatus 1 has square-shaped connectors 12b and 13b of devices such as the ultrasonic probes 12 and 13 for making a diagnosis by contacting the body surface of a patient. Are detachably connected. At this time, the connection connector 1 of the plurality of ultrasonic probes 12 and 13
Any one of 2b and 13b is selectively detachably connected to the square ultrasonic device connector 29 of the ultrasonic observation apparatus 1.

Then, the round / square connector power switch 61 is pressed to send the round ultrasonic device connector 28 and the square ultrasonic device connector 2 from the power supply unit 36.
9 is turned on. Then, the transmission pulse from the transmission / reception circuit unit 37 is transmitted to the transducer of the ultrasonic endoscope 3 from the round ultrasonic device connector 28 through a signal line (not shown). At this time, the reflected signal from the vibrator passes through the signal line from the circular ultrasonic device connector 28 and is sent to the PC section 38, where the PC section 38 processes the signal to display an ultrasonic diagnostic image. An ultrasound image is constructed on 5.

The periphery of the PC section 38 is a top cover 3.
5, because of the shield structure covered by the chassis 31, the front chassis 32, the rear panel 33, and the partition 50, noise generated in the PC section 38 during operation of the ultrasonic diagnostic apparatus 1, especially the CPU board 41 Noise caused by the base clock is sealed in this shield. Therefore,
As shown in FIG. 4, unnecessary radiation is generated from an electrical opening 67 formed by a space between the front chassis 32 of the housing 30 and the metal parts of the round ultrasonic device connector 28 and the rectangular ultrasonic device connector 29. Can be prevented from being radiated out of the housing 30.

Therefore, the above configuration has the following effects. That is, in the present embodiment, the PC section 38 inside the housing 30 of the ultrasonic observation apparatus 1 and other electric circuit sections (such as the power supply unit 36 and the transmission / reception circuit unit 37).
And a partition 50 having conductivity is attached between the partition 5 and the partition 5.
0 separates the PC section 38 from another electric circuit section so as to suppress unnecessary radiation from the PC section 38 from flowing to the other electric circuit section side. Here, the partition 50 itself and its contact portion or assembly portion with the housing 30 are provided with conductivity, and the shield by the partition 50 causes unnecessary radiation generated in the PC section 38 to flow to other electric circuit sections. Unnecessary radiation from the electrical opening 67 of the housing 30 unavoidable in ensuring medical electrical safety.
It can be prevented from being radiated outside. for that reason,
In the present embodiment, the exterior member of the housing 30 can also serve as a shielding function only by disposing the substantially plate-shaped partition wall 50 inside the housing 30. There is no need to provide a shield member. As a result, cost reduction and weight reduction can be realized by simplifying the component shape of the ultrasonic observation apparatus 1.

FIG. 7 shows a second embodiment of the present invention. In this embodiment, ultrasonic observation is performed instead of the PC partition wall shield type in which the partition wall 50 is mounted inside the housing 30 of the ultrasonic observation apparatus 1 of the first embodiment (see FIGS. 1 to 6). This is a PC type card cage-shaped shield type in which a frame-shaped card cage 71 made of sheet metal is attached to the chassis 31 of the housing 30 of the device 1. The other parts have the same configuration as the ultrasonic observation apparatus 1 of the first embodiment, and the same parts as those of the ultrasonic observation apparatus 1 of the first embodiment are denoted by the same reference numerals. Here, the description is omitted.

That is, the card cage 7 of the present embodiment
A plurality of flange portions 72 are provided on the top surface side of 1, and a plate-shaped lid (not shown) can be fixed by screws. Furthermore, P
The C board bracket 67 is not exposed outside the housing 30 as in the first embodiment, and once received by the relay board 73, the connector 74 mounted on the relay board 73 is It is exposed outside. Note that EMC components such as decaps and ferrite beads (not shown) are mounted on the relay board 73.

A notch through which the cable 55 passes is provided on the wall surface of the card cage 71, and a columnar ferrite core 75 and a flat ferrite core 76 can be attached. These ferrite cores 75, 7
6 passes through a coaxial or flat harness of an image system through which noise easily propagates.

Also, as in the case of the CPU board 41, a longer P
The end face 77 of the C board is regulated by a rail 78 attached to the wall surface of the card cage 71 or the chassis 31. (Purpose: Vibration prevention during transportation) The fan 46 is screwed to the front side surface of the card cage 71, and a wire mesh having a shielding property is secured to its ventilation hole while securing air flow. .

Therefore, in the present embodiment having the above-described configuration, the periphery of the PC section 38 of the ultrasonic diagnostic apparatus 1 is provided with a card cage 71, a cover (not shown) attached thereto, and a shield structure covered with the chassis 31. Therefore, the noise (particularly the CPU) generated in the PC unit 38 during the operation of the ultrasonic diagnostic apparatus 1
Noise caused by the base clock of the board 41. ) Is sealed in this shield. Therefore, it is possible to prevent unnecessary radiation from being radiated out of the housing 30 from the opening 67 of the front chassis 32 of the housing 30.

In the card cage 71 of the present embodiment, the power supply unit 3 is provided like the partition wall 50 of the first embodiment.
Since there is no hole 56 through which the cable 55 that feeds power from 6 to the backplane 40 passes, the shielding effect can be further enhanced. The hole 56 of the partition 50 is connected to the cable 55.
The hole needs to be large enough to allow the connector at the end to pass through, and it is not possible to use only a size corresponding to the thickness of the cable 55.

Further, in this embodiment, since the PC board bracket 67 is not exposed outside the housing 30, the PC board bracket 67 is mounted on the relay board 73 and the EM such as a decap or a ferrite bead is used.
The shielding effect is high because the C countermeasure parts function. In addition,
Since this countermeasure does not require modification to a commercially available general-purpose PC board, there is no danger that the parts warranty of the PC board manufacturer will expire and the product will not be accepted.

Further, the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the spirit of the present invention. Next, other characteristic technical matters of the present application will be additionally described as follows. (Supplementary item 1) An ultrasonic endoscope or an ultrasonic probe having a mechanism for mechanically scanning the ultrasonic transducer, and an arbitrary timing while mechanically scanning ultrasonic waves from the ultrasonic transducer. A transmitting / receiving unit that drives, transmits ultrasonic waves from the ultrasonic transducer, receives and detects the obtained echo signal, and outputs the received echo signal as received data of an analog signal, and the analog signal output from the transmitting / receiving unit. In the ultrasonic observation apparatus provided with a computer section for performing signal processing on the received data, a conductive member for separating the computer section and another electric circuit section is provided in an ultrasonic observation apparatus housing. Ultrasound observation device.

(Additional Item 2) The ultrasonic transducer electronically scans an electronic scanning transducer composed of a plurality of piezoelectric elements arranged in an array, and outputs an ultrasonic receiving signal. A wave unit, a transmitting / receiving unit that transmits an ultrasonic wave from the ultrasonic transducer, receives and detects an obtained echo signal, and outputs the received echo signal as received data of an analog signal, and the analog signal output from the transmitting / receiving unit. In the ultrasonic observation apparatus provided with a computer section for performing signal processing on the received data, a conductive member for separating the computer section and another electric circuit section is provided in an ultrasonic observation apparatus housing. Ultrasound observation device.

(Additional Item 3) A gap for securing medical electrical safety is provided between the vicinity of the metal part of the connector for connecting the ultrasonic endoscope and the ultrasonic probe and the surrounding metal part of the housing. 3. The ultrasonic observation apparatus according to claim 1, or 2.

(Prior Art of Supplementary Items 1 to 3)
As disclosed in Japanese Patent Application No. 0932212 and Japanese Patent Application No. 11-307346, in recent years, in order to reduce the size and cost of the apparatus and to facilitate the addition of functions, a conventional dedicated coordinate conversion circuit, interpolation circuit,
A so-called PC-based (personal computer-based, hereinafter abbreviated as PC-based) ultrasonic observation apparatus has been developed in which functions such as a controller are performed by a computer board. The PC-based system has the advantage of being able to supply a standard and inexpensive commercial general-purpose PC board with hardware upgrades and versatility of application software, and to provide a highly scalable observation device with Ver and up. It is thought to be the mainstream of acoustic observation equipment.

(Problems to be Solved by Additional Items 1 to 3)
However, the conventional technique has the following problems.・ Since it is mainly composed of a commercially available general-purpose PC board, it was difficult to take measures against EMC noise. For example, the mounting of decaps and ferrite beads, which are extremely effective measures against electrical effective noise, can be implemented by modifying the PC at the time of purchase.
There are cases where the manufacturer's warranty of the board cannot be obtained.

In addition to the above, a medical PC-based ultrasonic observation apparatus has a significant disadvantage in terms of noise as compared with a general PC-based apparatus. It is IEC Publicat, an international standard for medical electrical equipment safety rules, to avoid inadvertent electric shock in patients in medical procedures.
It is necessary to take the creepage distance and the spatial distance specified in the ion 60601-1 in the housing of the ultrasonic observation apparatus, and unnecessary radiation generated from the PC board from the housing opening for securing the distance is inevitable. There was a fault called.

This disadvantage will be specifically described with reference to FIGS. 8 and 9. If the IEC standard is applied, the reference voltage 250
In the case of using a power supply unit c which is basic-insulated or reinforced-insulated by VAC, the metal of the ultrasonic observation device a and the round ultrasonic device connection connector f and the square ultrasonic device connection connector g serving as a patient circuit unit are formed. 2.5 spaces between parts
It is necessary to secure a space of 4 mm in mm and creepage distance. When a power supply unit with a double insulation or reinforced insulation at a reference voltage of 250 VAC is used, the housing of the ultrasonic observation apparatus 1 corresponds to a secondary circuit, and the metal of the housing housing and the ultrasonic equipment connection connectors f and g is used. 5m clearance between parts
m, it is necessary to secure a space of 8 mm in creepage distance. These spaces serve as openings h, which cause unnecessary radiation generated from the PC board d to radiate out of the housing.

An ultrasonic endoscope which is inserted into a patient's body cavity for diagnosis as a connection device to the round ultrasonic device connection connector f is a connection device to the square ultrasonic device connection connector g. There is an ultrasonic probe for making a diagnosis by contacting the body surface of a patient.

(Means and Actions for Solving the Problems of Supplementary Items 1 to 3) A partition wall for separating a PC board portion from other portions (transmitting circuit / receiving circuit, power supply unit, round / square connector, etc.) is provided. It is provided inside the body, and the partition wall itself and its contact portion or assembly portion with the housing have conductivity. This partition wall shield prevents unnecessary radiation generated in the PC board from wrapping around the other portion, so that unnecessary radiation from the housing opening (electrical) inevitable from the viewpoint of ensuring medical electrical safety is out of the housing. Prevent radiation.

(Effects of Supplementary Items 1 to 3) In a PC-based ultrasonic observation apparatus, unnecessary radiation of a PC section from a housing opening (electrical) which has conventionally been inevitable in securing medical electrical safety. The present invention provides a highly scalable, low-cost ultrasonic observation device that uses commercially available general-purpose PC boards that are safe for medical use and are available in large quantities. It is possible to do.

[0053]

According to the present invention, an unnecessary radiation suppressing member which separates a computer section from another electric circuit section and suppresses unnecessary radiation from the computer section from flowing to the other electric circuit section side. Is provided in the case, so that commercially available general-purpose PC boards, which are generally available in large quantities, can be used properly. Unnecessary radiation generated from the PC board section has conventionally been secured as an international standard for medical electrical safety general rules. It can be prevented from being radiated from the housing opening (electrical) which was inevitable above to the outside of the housing, and can be medically safe, low in cost, and can enhance the expandability of the device.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a schematic configuration of an entire system of a medical apparatus including an ultrasonic observation apparatus according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a schematic configuration of the ultrasonic observation apparatus according to the first embodiment.

FIG. 3 is a cross-sectional view of the ultrasonic observation apparatus according to the first embodiment.

FIG. 4 is a front view showing a front panel of the ultrasonic observation apparatus according to the first embodiment.

FIG. 5 is a front view showing a back plate of the ultrasonic observation apparatus according to the first embodiment.

FIG. 6 is a perspective view showing a partition in a housing in the ultrasonic observation apparatus according to the first embodiment.

FIG. 7 is a cross-sectional view illustrating an internal configuration of an ultrasonic observation apparatus according to a second embodiment of the present invention.

FIG. 8 is a perspective view showing the internal configuration of a conventional ultrasonic observation apparatus.

FIG. 9 is a front view showing a front panel of a conventional ultrasonic observation apparatus.

[Explanation of symbols]

 24 Ultrasonic vibrator section (ultrasonic transmitting / receiving section) 30 Case (case) 37 Transmitting / receiving circuit unit (transmitting / receiving unit) 38 PC section (computer section) 50 Partition wall (unnecessary radiation suppressing member)

Claims (1)

[Claims] An ultrasonic transducer is mechanically scanned, the ultrasonic transducer is driven at an arbitrary timing to transmit an ultrasonic wave, and an echo signal obtained at this time is received and detected. An ultrasonic observation apparatus for ultrasonic observation, comprising: a case in which a transmitting / receiving unit that outputs as received data of an analog signal and a computer unit that performs signal processing on the received data of the analog signal output from the transmitting / receiving unit are built-in. In the case, an unnecessary radiation suppression member that separates the computer unit from another electric circuit unit and suppresses unnecessary radiation from the computer unit from flowing to the other electric circuit unit side is provided in the case. An ultrasonic observation apparatus, characterized in that: