WO2016139801A1

WO2016139801A1 - Video endoscope system

Info

Publication number: WO2016139801A1
Application number: PCT/JP2015/056529
Authority: WO
Inventors: 猛岩間
Original assignee: 株式会社エム・ピー・アイ
Priority date: 2015-03-05
Filing date: 2015-03-05
Publication date: 2016-09-09

Abstract

Provided is a video endoscope system having excellent waterproofness, operability, handleability, and convenience, able to support environments where an external power source cannot be ensured, and offering a completely cordless system.　This video endoscope system 1 has endoscope units 2, 3, 4, 5, an imaging unit 6, and a coupling mechanism 8. The coupling mechanism is provided with a first coupling section 24 for the imaging unit, a second coupling section 25 for the endoscope units, and a waterproofing mechanism (O-ring, sealing member) for sealing in the interior of the coupling mechanism. In a state where the endoscope units are coupled to the imaging unit via the coupling mechanism, the user is able to view an image displayed on the imaging unit while also simultaneously directly viewing the operation of the endoscope units.

Description

Video endoscope system

In the present invention, a plurality of types of endoscope units can be selectively connected to a single imaging unit by using the same (common) coupling mechanism, and the entire system is cordless. The present invention also relates to a video endoscope system having a recording / playback function.

The endoscope unit includes, for example, a scope in which an imaging device (light source, imaging element) is provided at the distal end of an insertion portion, an endoscope attachment in which an imaging device is provided, and the like. Examples of the scope include a flexible video scope, a rigid video stylet, and a laryngoscope blade. The light source includes, for example, an LED. Examples of the image sensor include a CCD and a CMOS. An existing endoscope (for example, a fiberscope) is detachably attached to the attachment.

Conventionally, as shown in Patent Document 1, for example, an electronic endoscope system that displays an in-vivo image on a monitor has been proposed. The endoscope system is configured to be able to determine the type of endoscope connected to the processor. (See paragraphs “0017” to “0025” of Patent Document 1)
The processor is connected to an external power supply while being placed on a desktop. The processor is provided with signal processing means. A monitor and a common connector are connected to the processor. A plurality of types of endoscopes can be selectively connected to the connector. The endoscope and the processor are electrically and structurally connected via a connector. (Refer to paragraph “0012” of Patent Document 1 and FIGS. 1 and 2)
For example, the user selects one endoscope and connects a universal cord extending from the selected endoscope to the connector. At this time, the type of the connected endoscope is determined by the signal processing means of the processor. Next, the user inserts the insertion portion of the endoscope into the body and images the inside of the body. An electrical signal of the captured image is output from the image sensor to the processor. The processor displays an image in the body on the monitor based on the electrical signal.

JP 2011-206078 A

By the way, a certain level of skill is required to operate the endoscope. In this case, in the above-described endoscope system, anyone can easily operate the endoscope easily and conveniently if the monitor can be viewed simultaneously while directly viewing the operation of the endoscope.

However, in the system of Patent Document 1, the processor is used in a state of being placed on a desktop. The monitor is placed over the processor. Furthermore, the electronic endoscope is operated at a position away from the monitor. For this reason, the user cannot see the monitor at the same time while directly viewing the operation state of the endoscope. In other words, the user can directly view only one of the endoscope and the monitor.

Further, the above-described endoscope system is required to maintain a stable connection state for a long time. However, in the system of Patent Document 1, the connector does not have a waterproof structure. That is, water can easily enter the connector. For this reason, the electrical and structural connection between the endoscope and the processor cannot be stably maintained over a long period of time.

Furthermore, the above-described endoscope system is required to be cordless for the entire system in order to improve the operability and handling of the endoscope. At the same time, the above-described endoscope system is required to have a function of displaying an in-vivo image on a monitor even in an environment where an external power source cannot be secured due to, for example, an earthquake disaster or a power failure.

However, in the system of Patent Document 1 described above, the monitor, the processor, and the endoscope are electrically and structurally connected via a cord, a cable, and the like. Furthermore, the processor is always connected to an external power source. For this reason, the operability and handling of the endoscope cannot be improved, and the entire system cannot be made cordless.

Therefore, an object of the present invention is to support an environment in which an external power source cannot be secured, and in a video having a recording / playback function that is excellent in waterproofness, operability, handling, and convenience, in which the entire system is cordless. To provide an endoscope system.

In order to achieve such an object, the present invention provides a plurality of endoscope units for observing the inside of a body, at least one imaging device for imaging an observation target, and an image of the captured observation target. An imaging unit for displaying and a connection mechanism for selectively connecting a plurality of endoscope units to the imaging unit in a detachable manner are provided.

In the present invention, the imaging unit includes a housing having a waterproof structure as a whole. The case has a power supply unit capable of battery replacement, a monitor for displaying an image, a discrimination circuit having a first function for discriminating the type of imaging device, and a plurality of systems corresponding to the type of imaging device And a setting circuit for setting a signal circuit for processing an output signal of the imaging device from a plurality of signal circuits based on the determination result of the determination circuit.

In the present invention, the connection mechanism includes a first connection portion provided in the imaging unit and a second connection provided in each of the plurality of endoscope units and detachably connected to the first connection portion. And a waterproofing mechanism for connection that seals the inside of the connection mechanism in a state where the first connection part and the second connection part are connected.

In the present invention, in a state where one endoscope unit selected from a plurality of endoscope units is connected to an imaging unit via a connecting mechanism, the user can directly observe the operation of the endoscope unit. At the same time, it is possible to see the image displayed on the imaging unit.

According to the present invention, a video endoscope having a recording / playback function that can cope with an environment in which an external power source cannot be secured and is excellent in waterproofness, operability, handling, and convenience, in which the entire system is cordless. A system can be realized.

1 is a perspective view showing the overall configuration of a video endoscope system according to a first embodiment of the present invention. The perspective view which shows the external appearance structure of the connection mechanism of FIG. The perspective view which shows the external appearance structure of the 1st connection part of FIG. The perspective view which shows the external appearance structure of the 2nd connection part of FIG. Sectional drawing which shows the connection state of the connection mechanism of FIG. Sectional drawing which shows the positional relationship of an engaging convex part and an engaging recessed part in the connection state of FIG. Sectional drawing which shows the state by which the engagement convex part was restrained by the engagement recessed part. Sectional drawing which shows the state by which the engagement convex part was released | released from the engagement recessed part. Sectional drawing which shows the non-connection state of the connection mechanism of FIG. The perspective view which shows the whole structure of the video endoscope system which concerns on 2nd Embodiment of this invention. The perspective view which shows the external appearance structure of the connection mechanism of FIG. The perspective view which shows the external appearance structure of the 1st connection part of FIG. The perspective view which shows the external appearance structure of the 2nd connection part of FIG.

“First Embodiment”
A video endoscope system according to a first embodiment of the present invention will be described. The video endoscope system of the present embodiment is a set of a plurality of devices used for observing the human body such as the trachea (Trachea) and the larynx (Larynx) in the medical field.

As shown in FIG. 1, a video endoscope system 1 according to this embodiment includes a plurality of

endoscope units

2, 3, 4, and 5 for observing the inside of a body, and a plurality of images for imaging an observation target. It has a device (not shown), one imaging unit 6, and a plurality of coupling mechanisms 8 including a signal connector 7 (see FIGS. 3 to 5). The imaging unit 6 can display a captured color image of the observation target. The connection mechanism 8 can selectively connect the plurality of

endoscope units

2, 3, 4, and 5 to the imaging unit 6 detachably.

"About imaging devices"
One imaging device is provided for each of the plurality of

endoscope units

2, 3, 4, and 5. The imaging device can be configured by combining, for example, one light source and one imaging device. For example, an LED or the like can be applied as the light source. As the image sensor, for example, a CCD or a CMOS can be applied. In such a configuration, when the light source emits light, an optical image reflected from the observation target is converted into an electrical signal by the imaging device. The electrical signal output from the image sensor is transmitted to the imaging unit 6 via the connector 7.

“

Endoscope units

2, 3, 4, and 5”
In the drawing, as an example of a plurality of

endoscope units

2, 3, 4, 5, one flexible videoscope 2, one rigid video stylet 3, three laryngoscope blades 4, and one endoscope A mirror attachment 5 is shown. Note that the plurality of

endoscope units

2, 3, 4, and 5 shown in the drawings are merely examples, and the type and number of the endoscope units may be changed according to the purpose of use and the use environment. Needless to say, you can. For example, the number of laryngoscope blades 4 can be set to 4 or more, and a plurality of flexible videoscopes 2 can be applied.

The flexible videoscope 2 has a scope body 2a and an insertion portion 2b to be inserted into the body. The scope body 2a is provided with an operation lever 2c, an operation button 2d, and the like. The insertion part 2b has flexibility. The above imaging device (light source, imaging device) is provided at the distal end 2e of the insertion portion 2b. In such a configuration, for example, by operating the operation lever 2c, the distal end 2e of the insertion portion 2b can be bent toward the observation target.

The rigid video stylet 3 has a scope main body 3a and a rigid insertion portion 3b. The insertion portion 3b has a distal end portion 3c that is curved. The insertion portion 3b is covered with a tracheal tube (not shown) during use. The above-described imaging device (light source, imaging element) is provided at the distal end 3d of the insertion portion 3b. In such a configuration, the insertion portion 3b is inserted into the body (trachea) together with the tracheal tube.

The laryngoscope blade 4 has a scope main body 4a and a rigid insertion portion (blade) 4b to be inserted into the body. The insertion portion 4b has a shape corresponding to the contour of the larynx (Larynx) and the user's technique (technic). Further, the insertion portion 4b is provided with a hollow tube 4d toward the distal end 4c of the insertion portion 4b. The imaging device (light source, imaging device) described above is provided at the tip 4e of the tube 4d. In such a configuration, by inserting the insertion portion 4b along the larynx, the imaging device (light source, imaging element) can be opposed to the observation target.

The attachment 5 has a scope main body 5a and an attachment mechanism 5b to which an existing endoscope (not shown) (for example, a fiberscope having an insertion portion) is detachably attached. The above-described imaging device (light source, imaging element) is provided inside the scope body 5a.

The

insertion sections

2b and 3b, the tube 4d, and the attachment 5 described above include a cable (not shown) for supplying power to the imaging device (light source, imaging element), and an output signal of the imaging element. Is transmitted to the imaging unit 6. Electric power is supplied from a power supply unit 12 of the imaging unit 6 described later.

“About the imaging unit 6”
The imaging unit 6 includes a housing 9 that has a waterproof structure as a whole and a hinge mechanism 10 that supports the housing 9. The housing 9 accommodates a monitor 11, a power supply unit 12, a control unit (not shown), and the like. All electronic components (including the monitor 11 and the control unit) housed in the housing 9 can be driven by power supplied from the power supply unit 12. Furthermore, the imaging unit 6 also accommodates various switch buttons 15 such as a power button 13 and a recording button 14, a signal output terminal 16, and the like.

“About Monitor 11”
The monitor 11 is a display device capable of displaying a color image. As the display device, for example, a liquid crystal display (LCD), an organic EL display, or the like can be applied. The monitor 11 has a wide display screen along the side surface of the housing 9.

“About the power supply unit 12”
The power supply unit 12 is configured to allow battery replacement. The power supply unit 12 includes a holder 17, a housing portion 18, a lid 19, and a closing waterproof mechanism 20. As the battery 21, for example, a primary battery such as an alkaline battery or a secondary battery such as a nickel-metal hydride battery can be used. Further, as the size of the battery 21, for example, an AA battery (Size AA battery) can be applied.

The holder 17 holds a plurality of batteries 21 in a detachable manner. Here, as an example, a holder 17 that detachably holds three AA batteries 21 is assumed. The holder 17 holds three batteries 21 side by side in parallel. In this state, the positive electrode (Positive electrode) and the negative electrode (Negative electrode) are alternately arranged.

The accommodating part 18 is provided in the housing 9. The accommodating portion 18 extends from the outer surface of the housing 9 toward the inside. On the outer surface of the housing 9, the accommodating portion 18 includes a gate 22 opened to the outside. Inside the housing 9, the accommodating portion 18 is closed. The holder 17 described above can be inserted from the gate 22 into the accommodating portion 18 while holding the three batteries 21. Thus, the three batteries 21 together with the holder 17 can be accommodated in the accommodating portion 18. In the case where the battery 21 is taken out from the accommodating portion 18, the holder 17 may be taken out from the gate 22.

The lid 19 is supported at one end 19a of the lid 19 so as to be rotatable. Thereby, the lid | cover 19 can be positioned in the closed position which obstruct | occludes the accommodating part 18, and the open position which opens the accommodating part 18. FIG. Here, in a state where the three batteries 21 are accommodated in the accommodating portion 18, the lid 19 is positioned at the closed position. As a result, the battery 21 can be confined in the accommodating portion 18.

The waterproofing mechanism 20 for closing is configured to fill a gap between the accommodating portion 18 and the lid 19. In the drawing, as an example of the waterproof mechanism 20, an elastic ring 20 that is continuous so as to surround the gate 22 in the housing portion 18 is shown. In such a configuration, when the lid 19 is positioned at the closed position, the accommodating portion 18 is closed by the lid 19. In this state, the elastic ring 20 contacts both the housing portion 18 and the lid 19. Thereby, the clearance gap between the accommodating part 18 and the lid | cover 19 is filled up. As a result, the accommodating portion 18 is maintained in a sealed state from the outside.

About the control unit
The above-described

endoscope units

2, 3, 4, and 5 are provided with a plurality of types of imaging devices (light sources and imaging elements) according to the observation target in the body. Here, as an example, the attachment 5 is provided with an imaging device (light source, imaging element) having a specification different from that of the

other endoscope units

2, 3, 4. In the

other endoscope units

2, 3, and 4, an optimum imaging device (light source, imaging element) is provided for each endoscope unit.

For example, the image sensor of the attachment 5 has a different number of pixels from the image sensors of the

other endoscope units

2, 3, 4. Therefore, two types of imaging devices (imaging devices) having different numbers of pixels are applied to the video endoscope system 1. In this case, the control unit is required to perform signal processing according to the type of the imaging device (imaging device) and the types of the

endoscope units

2, 3, 4, and 5 provided with the imaging device (imaging device). It is done.

Therefore, although not particularly shown, the control unit is provided with a discrimination circuit, a two-system signal circuit, and a setting circuit. Further, the control unit is provided with a control circuit and a power supply circuit for controlling these circuits.

About discriminating circuit
The discrimination circuit has a first function for discriminating the type of the imaging device (imaging element) and a second function for discriminating the types of the

endoscope units

2, 3, 4, 5.

As a method for determining the first function, for example, in a connector 7 (see FIG. 4) described later, a plurality of dedicated terminals (for example, the male terminal 23 (male terminal in FIG. 4) for determining the type of the imaging device (imaging device). )) Is set. In this case, the voltage level of the different dedicated terminal (male terminal 23) is set to the ground potential (ground / potential) corresponding to the type of the imaging device (imaging device).

In the video endoscope system 1, two types of imaging devices (imaging elements) are applied. For example, two terminals (a first terminal 23 a and a second terminal 23 b) are set from among a plurality of male terminals 23 as dedicated terminals for discriminating between two types of imaging devices (imaging elements). Corresponding to the type of the imaging device (imaging device), the voltage level of the first terminal 23a or the second terminal 23b is set to the ground potential.

Specifically, the voltage level of the first terminal 23a is set to the ground potential corresponding to the imaging device (imaging device) of the endoscope unit (attachment) 5. Then, the voltage level of the second terminal 23b is set to the ground potential corresponding to the imaging devices (imaging elements) of the

other endoscope units

2, 3, and 4.

In this case, the user connects one endoscope unit selected from the plurality of

endoscope units

2, 3, 4, and 5 to the imaging unit 6 through the connection mechanism 8. At this time, the determination circuit determines which of the first terminal 23a and the second terminal 23b is at the ground potential. When the first terminal 23a is at the ground potential, the determination circuit determines that the image pickup device (image pickup element) of the endoscope unit (attachment) 5 is used. On the other hand, when the second terminal 23b is at the ground potential, it is determined by the determination circuit that the image pickup device (image pickup element) of the

other endoscope units

2, 3, 4 is used.

Furthermore, as a method for discriminating the second function, a plurality of dedicated terminals (for example, the male terminal 23 in FIG. 4) for discriminating the types of the

endoscope units

2, 3, 4, and 5 are set in the connector 7 described later. To do. In this case, the voltage level of the different dedicated terminal (male terminal 23) is set to the ground potential corresponding to the types of the

endoscope units

2, 3, 4, and 5.

FIG. 1 shows six types of

endoscope units

2, 3, 4, and 5. For example, six terminals (third to eighth terminals 23c to 23h) among a plurality of male terminals 23 are set as dedicated terminals for discriminating the six types of

endoscope units

2, 3, 4, and 5. . Corresponding to the types of the

endoscope units

2, 3, 4, and 5, any one voltage level of the third to eighth terminals 23c to 23h is set to the ground potential.

Specifically, corresponding to the endoscope unit 2, the voltage level of the third terminal 23c is set to the ground potential. Corresponding to the endoscope unit 3, the voltage level of the fourth terminal 23d is set to the ground potential. Corresponding to the three types of endoscope units 4, the voltage levels of the fifth to seventh terminals 23e to 23g are set to the ground potential. Then, corresponding to the endoscope unit 5, the voltage level of the eighth terminal 23h is set to the ground potential.

endoscope units

2, 3, 4, and 5 to the imaging unit 6 through the connection mechanism 8. At this time, the determination circuit determines which of the third to eighth terminals 23c to 23h is at the ground potential. When the third terminal 23c is at the ground potential, the determination circuit determines that the endoscope unit 2 is in use. Further, when the fourth terminal 23d is at the ground potential, the determination circuit determines that the endoscope unit 3 is used. Hereinafter, by performing the same determination, the types of the

endoscope units

2, 3, 4, and 5 are determined.

"Signal circuit"
The two signal circuits are configured to correspond to the two types of imaging devices (imaging elements) described above. In this case, one signal circuit processes an electrical signal (output signal) output from one imaging device (imaging device), and displays a color image in the body on the monitor 11. The other signal circuit processes an electrical signal (output signal) output from the other imaging device (imaging device) and causes the monitor 11 to display a color image in the body.

“Setting circuit”
The setting circuit sets a signal circuit that processes the output signal of the imaging device (imaging device) from the two signal circuits based on the discrimination result of the discrimination circuit. In other words, the setting circuit sets a signal circuit that processes the output signal of the imaging device (imaging device) determined by the determination circuit.

As a result, the electrical signals output from the determined imaging devices (imaging devices) of the

endoscope units

2, 3, 4, and 5 are transmitted to the imaging unit 6 via the connector 7 described later. . In the imaging unit 6, a color image can be displayed on the monitor 11 based on the transmitted electrical signal.

"About coupling mechanism 8"
As shown in FIGS. 1 to 6, the connecting mechanism 8 includes one first connecting portion 24, a plurality of second connecting portions 25, a plurality of signal connectors 7, a plurality of connecting waterproof mechanisms, and a plurality of connecting mechanisms 8. And a holding mechanism.

The first connecting part 24 is provided in the imaging unit 6. The 1st connection part 24 is provided with the 1st main body 24a which has a hollow cylindrical shape. The first main body 24a is attached to the housing 9 via the hinge mechanism 10 described above. The hinge mechanism 10 is configured to be able to relatively rotate and swing the first main body 24a and the housing 9.

A plurality of second connecting portions 25 are provided for each of the plurality of

endoscope units

2, 3, 4, and 5. The plurality of second connecting portions 25 can be selectively detachably connected to the first connecting portion 24 one by one. Each second connecting portion 25 includes a second main body 25a having a hollow cylindrical shape. The plurality of second main bodies 25a are attached to the scope

main bodies

2a, 3a, 4a, 5a of the plurality of

endoscope units

2, 3, 4, 5 one by one.

The connector 7 includes a first connector part 7a provided in the first connection part 24 (first body 24a) and a plurality of connectors 7 provided one by one in the plurality of second connection parts 25 (second body 25a). 2nd connector part 7b.

The first connector portion 7a has a cylindrical shape and is provided concentrically within the first main body 24a. An annular connector gap 26 is formed between the first connector portion 7a and the first main body 24a. The first connector portion 7a is provided with a plurality of female terminals 27. The plurality of female terminals 27 are arranged at intervals.

The second connector portion 7b has a hollow cylindrical shape and is provided concentrically within the second main body 25a. The same number of male terminals 23 (male / terminal) as the female terminals 27 are provided inside the second connector portion 7b. The arrangement of the plurality of male terminals 23 matches the arrangement of the plurality of female terminals 27 described above. In such a configuration, all the male terminals 23 are inserted into all the female terminals 27 when the first connecting portion 24 and the second connecting portion 25 are connected.

In this case, in order to accurately insert the male terminal 23 into the female terminal 27, the first connecting portion 24 and the second connecting portion 25 are provided with positioning marks. For example, the 1st connection part 24 is provided with the 1st mark 28 (refer FIG. 3). The first mark 28 is provided at the tip of the first main body 24a. On the other hand, the 2nd mark 29 is provided in the 2nd connection part 25 (refer FIG. 2). The second mark 29 is provided at the tip of an operation member 35 described later.

The waterproofing mechanism for connection is configured to seal the connection part between the first connection part 24 and the second connection part 25. In this case, the waterproof mechanism can be provided on both or either one of the first connecting portion 24 and the second connecting portion 25. Here, as an example, the waterproof mechanism is provided in each of the plurality of second connecting portions 25. The waterproof mechanism seals the inside of the coupling mechanism in a state where the first coupling part 24 and the second coupling part 25 are coupled.

Specifically, the waterproof mechanism includes an O-ring 30 and a seal member 31 (see FIG. 5). In a state where the first connecting portion 24 and the second connecting portion 25 are connected, the O-ring 30 contacts the outside of the second body 25a, and the seal member 31 contacts the inside of the second body 25a. . In other words, when the first connecting portion 24 and the second connecting portion 25 are connected, the second main body 25a is maintained in a state of being sandwiched between the O-ring 30 and the seal member 31 without a gap.

The O-ring 30 is accommodated in the annular groove 32. The groove part 32 is provided in the part facing the outer periphery of the 2nd main body 25a. The groove portion 32 is formed by partially denting the inner periphery of the first main body 24a along the circumferential direction. The seal member 31 has a hollow cylindrical shape and extends along the inner periphery of the second main body 25a. The extending end of the seal member 31 is in contact with the inner periphery of the second main body 25a. Thus, a double seal structure is configured by the O-ring 30 and the seal member 31 at the connection portion between the first connection portion 24 and the second connection portion 25.

The holding mechanism includes a plurality of lever members 33, a plurality of engagement convex portions 34, and an operation member 35. The lever members 33 are provided concentrically at regular intervals along the outer periphery of the second main body 25a. The engaging projection 34 is provided at the tip of the lever member 33. The base end of the lever member 33 is fixed to the operation member 35. In this configuration, the lever member 33 has a function as a cantilever leaf spring. As a result, the engaging convex portion 34 is elastically supported by the lever member 33.

The operation member 35 has a hollow cylindrical shape and is disposed so as to cover the outer periphery of the second main body 25a. The operation member 35 is configured to be movable along the outer periphery of the second main body 25a by the user. In addition, a cover 36 is provided on the outer periphery of the second main body 25a so as to cover the holding mechanism. The cover 36 and the second main body 25a are sealed with an O-ring 37.

Further, the holding mechanism includes an engagement recess 38. The engaging recess 38 is configured by partially denting the inner periphery of the first main body 24a along the circumferential direction. The engaging concave portion 38 is provided at a position facing the engaging convex portion 34 when the first connecting portion 24 and the second connecting portion 25 are connected. Thereby, at the time of connection, the engaging convex part 34 partially enters the engaging concave part 38 by the elastic force of the lever member 33. As a result, the engaging convex portion 34 is stabilized in a state where it is engaged with the engaging end 38a of the engaging concave portion 38 (see FIG. 6).

Furthermore, an annular operation piece 39 (see FIG. 5) is provided on the outer periphery of the second main body 25a. The operation piece 39 is configured by partially protruding the outer periphery of the second main body 25a along the circumferential direction. On the other hand, an annular operation groove 40 that can accommodate the operation piece 39 is provided near the base end of the lever member 33. The operation groove 40 is configured by partially denting the inner periphery of the lever member 33 along the circumferential direction.

Furthermore, an operation gap 41 is formed between the operation piece 39 and the operation groove 40 in a direction crossing the operation piece 39. In the operation groove 40, a pair of peripheral surfaces (restraint surface 40a (restraint surface), release surface 40b (release surface)) facing both sides of the operation piece 39 are formed. In such a configuration, the operation member 35 is relatively within the range surrounded by the pair of peripheral surfaces (restraint surface 40a and release surface 40b) and along the outer periphery of the second main body 25a by the operation gap 41. Can be moved.

"Recording and playback function"
The imaging unit 6 has a recording / playback function. Further, the housing 9 has a configuration (not shown) that holds a storage medium 56 (for example, an SD card) for storing images so as to be removable. As an example, the drawing shows an accommodating portion 18 that holds the SD card 56 so that it can be removed. As a configuration for holding the SD card 56, for example, a slot (not shown) such as a slot can be applied. The insertion opening can be configured in the accommodating portion 18.

With this configuration, it is possible to record the observation target image captured by the imaging device (light source, imaging element) in the storage medium 56. An image recorded in the storage medium 56 can be reproduced on the monitor 11, for example. Further, the SD card 56 is held in the storage unit 18. The lid 19 is positioned in the closed position. At this time, the elastic ring 20 comes into contact with both the accommodating portion 18 and the lid 19. Thereby, the SD card 56 can be maintained in a sealed state from the outside.

"Specifications of video endoscope system 1"
For example, three AA batteries 21 are held by the holder 17 when replacing the batteries. The lid 19 of the waterproof housing 9 is opened, and the gate 22 and the accommodating portion 18 are opened. The holder 17 is inserted from the gate 22. Three batteries 21 are accommodated in the accommodating portion 18. Close the lid 19. Thereby, the accommodating part 18 is sealed by the waterproofing mechanism for closure (elastic ring 20).

The endoscope unit 4 is selected from the plurality of

endoscope units

2, 3, 4, and 5 (see FIG. 1). In the drawing, the laryngoscope blade 4 is selected as an example. The first connecting part 24 and the second connecting part 25 are opposed to each other so that the first and

second marks

28 and 29 are aligned with each other (see FIG. 2). The 1st connection part 24 and the 2nd connection part 25 are made to approach relatively. The second main body 25a is inserted into the connector gap 26 (see FIG. 3). When the first connecting portion 24 and the second connecting portion 25 are connected, all the male terminals 23 are inserted into all the female terminals 27. At this time, the inside of the connection mechanism is sealed by the waterproofing mechanism for connection (O-ring 30, seal member 31).

Press the power button 13 on the housing 9. The type of the imaging device (light source, imaging device) and the type of the endoscope unit 4 are determined by the determination circuit. A signal circuit is set by the setting circuit. The output signal of the image sensor can be processed by the set signal circuit. As a result, a color image can be displayed on the monitor 11.

Rotate and swing the housing 9. Thereby, the orientation of the monitor 11 can be adjusted to an angle that is easy for the user to see. As a result, the user can view the color image displayed on the monitor 11 while directly viewing the operation of the endoscope unit 4.

Further, when the endoscope unit 4 is operated, the image to be observed can be recorded on the storage medium (SD card) 56. The recorded image can be reproduced on the monitor 11. In this case, the storage medium (SD card) 56 can also be applied to an existing image processing apparatus (for example, a computer). Thereby, for example, it becomes possible to perform confirmation and examination of the observation object afterwards.

“Effect of the first embodiment”
According to this embodiment, by providing the power supply unit 12 that can replace the battery, a color image in the body can be displayed on the monitor 11 even in an environment where an external power source cannot be secured due to, for example, an earthquake disaster or a power failure.

According to this embodiment, only by connecting the

endoscope units

2, 3, 4, 5 to the housing 9 via the connection mechanism 8, the user can connect the

endoscope units

2, 3, 4, 5. A color image displayed on the monitor 11 can be viewed at the same time while directly viewing the operation. Thereby, the video endoscope system 1 excellent in operability and convenience can be realized.

According to the present embodiment, the connector 7 that electrically connects the imaging unit 6 and the

endoscope units

2, 3, 4, and 5 is provided in the coupling mechanism 8, thereby making the entire system cordless. it can. Thereby, the video endoscope system 1 excellent in handleability can be realized.

According to the present embodiment, the power supply unit 12 can be sealed by the closing waterproof mechanism (elastic ring) 20, and the connector 7 is sealed by the connecting waterproof mechanism (O-ring 30, seal member 31). Can do. In this case, electronic components such as the power supply unit 12 and the connector 7 are always maintained in a state of being isolated from the outside. Thereby, it can prevent beforehand that an electronic component corrodes and deteriorates at an early stage. As a result, it is possible to realize the video endoscope system 1 with excellent waterproofness that can be used for a long time.

According to this embodiment, since the holding mechanism (engagement convex part 34, engagement concave part 38) is provided, the

endoscope units

2, 3, 4, and 5 are separated from the imaging unit 6 during medical treatment, for example. Even if such a pulling force acts, the connection state of the connection mechanism 8 can be maintained.
That is, the pulling force that acts on the

endoscope units

2, 3, 4, and 5 also acts on the second main body 25a that is attached to the scope

main bodies

2a, 3a, 4a, and 5a. At this time, the second main body 25 a moves by the operation gap 41 of the operation groove 40. Then, the operation piece 39 comes into contact with the restraining surface 40 a of the operation groove 40. A tapered surface 25t provided on the second main body 25a abuts on the engaging convex portion 34. The engagement protrusion 34 is pressed against the engagement end 38a of the engagement recess 38 by the tapered surface 25t (see FIG. 7).
At this time, the engagement convex portion 34 is maintained in a state of being sandwiched between the engagement end 38a and the tapered surface 25t. Thereby, the connection mechanism 8 is maintained in a connected state. In other words, the

endoscope units

2, 3, 4, and 5 are not separated from the imaging unit 6. As a result, the user can safely perform treatment using the endoscope.

According to the present embodiment, by providing the operation member 35, for example, when the

endoscope units

2, 3, 4, and 5 are replaced or maintained, the connection state of the connection mechanism 8 can be smoothly released.
That is, the user pulls the operation member 35 in the direction in which the

endoscope units

2, 3, 4, 5 are separated from the imaging unit 6. The lever member 33 moves together with the operation member 35 by the operation gap 41 of the operation groove 40. Then, the release surface 40b of the operation groove 40 comes into contact with the operation piece 39 of the second main body 25a (see FIG. 5).

At this time, the tapered surface 25t described above is maintained in a non-contact state separated from the engaging convex portion 34 without contacting the engaging convex portion 34. In this state, when the operating member 35 is pulled, the engaging convex portion 34 gets over the engaging end 38a and is released from the engaging concave portion 38 (see FIG. 8). When the operation member 35 is further pulled, the second body 25a is pulled out from the first body 24a together with the lever member 33 (see FIG. 9). Thereby, the connection state of the connection mechanism 8 is cancelled | released smoothly. As a result, the

endoscope units

2, 3, 4, and 5 are separated from the imaging unit 6.

According to this embodiment, the image to be observed by the endoscope unit 4 can be recorded on the storage medium (SD card) 56. The recorded image can be reproduced on the monitor 11. Furthermore, the storage medium (SD card) 56 can be applied to an existing image processing apparatus (for example, a computer). Thereby, for example, it becomes possible to perform confirmation and examination of the observation object afterwards. As a result, a video endoscope system according to the user's purpose of use and usage environment can be realized.

“Second Embodiment”
A video endoscope system according to a second embodiment of the present invention will be described. In the following description, the same components as those in the first embodiment described above will be denoted by the same reference numerals and detailed description thereof will be omitted, and detailed description will be made focusing on components different from those in the first embodiment.

As shown in FIG. 10, the video endoscope system 1 of the present embodiment has one imaging unit 6 having the same configuration as that of the first embodiment, and a plurality of configurations different from those of the first embodiment. Endoscope units 42 to 45 and a plurality of connecting mechanisms 46.

“Endoscope units 42-45”
As the endoscope units 42 to 45, an endoscope sold by MPI Corporation is assumed. In the drawing, two

rigid stylet scopes

42 and 43, one laryngoscope blade 44, and one flexible fiberscope 45 are shown as an example.

The plurality of endoscope units 42 to 45 shown in the drawings are merely examples, and it goes without saying that the type and number of the endoscope units can be changed according to the purpose of use and the use environment. Yes. For example, the number of laryngoscope blades 44 can be set to two or more, and a plurality of flexible fiberscopes 45 can be applied.

The

rigid stylet scopes

42 and 43 have scope

main bodies

42a and 43a and

rigid insertion portions

42b and 43b. The insertion portion 42b is set to have a smaller diameter than the insertion portion 43b. The

insertion portions

42b and 43b have

curved tip portions

42c and 43c. The

insertion portions

42b and 43b are covered with a tracheal tube (not shown) during use. In such a configuration, the

insertion portions

42b and 43b are inserted into the body (trachea) together with the tracheal tube.

The laryngoscope blade 44 has a scope main body 44a and a rigid insertion portion (blade) 44b inserted into the body. The insertion portion 44b has a shape corresponding to the contour of the larynx (Larynx) and the user's technique (technic). Furthermore, the insertion portion 44b is provided with a hollow tube (not shown) toward the distal end 44c of the insertion portion 44b. In such a configuration, the distal end of the tube can be opposed to the observation target by inserting the insertion portion 44b along the larynx.

The flexible fiberscope 45 has a scope main body 45a and an insertion portion 45b inserted into the body. The scope main body 45a is provided with an operation lever 45c, an operation button (not shown), and the like. The insertion part 45b has flexibility. In such a configuration, for example, by operating the operation lever 45c, the distal end 45d of the insertion portion 45b can be bent toward the observation target.

Furthermore, although not shown in particular, the above-mentioned

insertion portions

42b, 43b, 45b and the tube accommodate a light guide for illumination and a light guide for imaging. The pair of light guides extends along the

insertion portions

42b, 43b, 45b and the tube. At the

insertion portions

42b, 43b, 45b and the distal ends of the tubes, the distal ends of the pair of light guides are exposed to the outside. On the other hand, at the proximal ends of the

insertion portions

42b, 43b, 45b and the tube, the pair of light guides is held at a pair of connecting

pipes

49, 50 of the coupling mechanism 46 described later. Each of the pair of connecting

pipes

49 and 50 has a hollow cylindrical shape.

In this case, the base end portion of one light guide is held by, for example, one connection tube 49. The base end portion of the other light guide is held by the other connecting pipe 50, for example. The pair of

connection pipes

49 and 50 are configured so that the pair of light guides can be optically connected to an imaging device (a light source and an imaging element) to be described later in a connected state of a connection mechanism 46 to be described later. For example, one light guide can be optically connected to the light source, and the other light guide can be optically connected to the image sensor.

"About the coupling mechanism 46"
As shown in FIGS. 10 to 13, the connection mechanism 46 includes one first connection portion 47, a plurality of second connection portions 48, a plurality of waterproofing mechanisms for connection, and a plurality of holding mechanisms. Yes.

The first connecting portion 47 is provided in the imaging unit 6. The 1st connection part 47 is provided with the 1st main body 47a which has a hollow cylindrical shape. The first main body 47 a is attached to the housing 9 via the hinge mechanism 10. Details of the first main body 47a will be described later.

A plurality of second connecting portions 48 are provided for each of the plurality of endoscope units 42 to 45. The plurality of second connecting portions 48 can be selectively connected to the first connecting portion 47 detachably one by one. Each second connecting portion 48 includes a second main body 48a having a cylindrical shape. The plurality of second main bodies 48a are attached to the scope main bodies 42a to 45a of the plurality of endoscope units 42 to 45 one by one.

Furthermore, the second connecting portion 48 includes a base 48b having a cylindrical shape. The base 48b is concentrically stacked on the second main body 48a. The base 48b is configured to have a smaller diameter than the second main body 48a. The base 48b is provided with the first and

second connection pipes

49 and 50 described above. The first and

second connection pipes

49 and 50 are raised in parallel with each other from the circular top surface 48s of the base 48b.

On the other hand, in the first connecting portion 47 described above, the imaging device (light source, imaging element) is arranged in the first main body 47a. The first main body 47a includes a pair of

recesses

51 and 52 into which the pair of

connection pipes

49 and 50 described above can be inserted. The

recesses

51 and 52 are formed by partially denting the first main body 47 a and have a shape along the outline of the

connection pipes

49 and 50. In the

recesses

51 and 52, for example, an imaging device (imaging device) such as a CCD or CMOS is accommodated in one recess 51, and an imaging device (light source) such as an LED is accommodated in the other recess 52, for example. Has been.

Furthermore, the first main body 47a includes an insertion hole 53 into which the base 48b can be inserted, and a connection hole 54 into which the second main body 48a can be inserted and connected. The insertion hole 53 is formed by partially recessing the first main body 47a, and has a shape along the outline of the base 48b. The connection hole 54 is formed inside the connection ring 55 and has a shape along the contour of the second main body 48a. The connection ring 55 has a hollow cylindrical shape and is arranged so as to cover the outer periphery of the first main body 47a. The connection ring 55 is configured to be rotated along the outer periphery of the first main body 47a by the user.

Furthermore, the holding mechanism is configured to be able to maintain the connected state between the first connecting portion 47 and the second connecting portion 48. Although not particularly illustrated, the holding mechanism includes a first screw portion and a second screw portion that meshes with the first screw portion. The first screw portion is configured inside the connection ring 55. That is, the first screw portion is configured on the inner periphery of the connection hole 54. On the other hand, the second screw portion is configured on the outer side (outer periphery) of the second main body 48a.

In such a configuration, the base 48 b is inserted into the insertion hole 53 and the second main body 48 a is inserted into the connection hole 54 while the

connection pipes

49 and 50 are opposed to the

recesses

51 and 52. The connection ring 55 is rotated. Thereby, the first and second screw portions are engaged with each other. At this time, the second main body 48 a is pulled into the connection hole 54. The base 48 b is pulled into the insertion hole 53. And when the 1st connection part 47 and the 2nd connection part 48 are connected, the

connection pipes

49 and 50 are stabilized in the state which entered the recessed

parts

51 and 52. As shown in FIG. Thus, the pair of light guides described above are optically connected to the imaging device (light source, imaging element) via the coupling mechanism 46.

Here, the first and second screw portions described above can be applied as the waterproofing mechanism for connection. In a state where both screw portions are engaged with each other, a labyrinth seal swirled in a spiral shape is formed between the screw portions. Further, as a waterproof mechanism, for example, an O-ring (not shown) is preferably interposed between the base 48b and the insertion hole 53. In this case, a groove is formed in one of the outer peripheral surface of the base 48b and the inner peripheral surface of the insertion hole 53 along the circumferential direction to form a groove, and an O-ring is fitted therein.

Thereby, a double seal structure can be constituted by a labyrinth seal and an O-ring at the connecting portion between the first connecting portion 47 and the second connecting portion 48. Thus, in the state where the first connecting portion 47 and the second connecting portion 48 are connected, the inside of the connecting mechanism can be sealed.

“Specifications and effects of video endoscope system 1”
According to the present embodiment, in the imaging unit 6, an imaging device (light source, imaging element) is provided in the first main body 47a. The type of the imaging device (light source, imaging element) has already been determined by the determination circuit. A signal circuit is set by the setting circuit. The output signal of the image sensor can be processed by the set signal circuit.

Thus, only by connecting one endoscope unit selected from the plurality of endoscope units 42 to 45 to the housing 9 via the connecting mechanism 46, the user can operate the endoscope unit. A color image displayed on the monitor 11 can be viewed at the same time while directly viewing. Thereby, the video endoscope system 1 excellent in operability and convenience can be realized.

According to the present embodiment, the imaging device (light source, imaging element) is integrated with the imaging unit 6. In this case, an electrical component such as a signal connector is not necessary. As a result, the entire system can be made cordless. As a result, it is possible to realize the video endoscope system 1 having excellent handling properties.

According to this embodiment, the inside of the coupling mechanism 46 is sealed by the waterproofing mechanism for coupling (labyrinth seal, O-ring). In this case, the imaging device (light source, imaging element) of the first main body 47a is always maintained in a state isolated from the outside. Thereby, it can prevent that the said imaging device corrodes and deteriorates at an early stage. As a result, it is possible to realize the video endoscope system 1 with excellent waterproofness that can be used for a long time.

According to the present embodiment, by rotating the connecting ring 55 and engaging the screw portions with each other, the imaging unit 6 (first connecting portion 47) and the endoscope units 42 to 45 (second connecting portion 48) Are connected. Thereby, even when a pulling force that separates the endoscope units 42 to 45 from the imaging unit 6 is applied, the connection state of the connection mechanism 46 can be maintained.

In this case, for example, when the endoscope units 42 to 45 are replaced or maintained, the connection state of the connection mechanism 46 can be smoothly released by rotating the connection ring 55 and releasing the engagement of the screw portion. .

Other specifications and effects are the same as in the first embodiment described above. For this reason, the description of the use and effect is omitted.

DESCRIPTION OF SYMBOLS 1 ...

Video endoscope system

2, 3, 4, 5 ... Endoscope unit, 6 ... Imaging unit,
8 ... Connecting mechanism, 9 ... Housing, 10 ... Hinge mechanism, 11 ... Monitor, 12 ... Power supply unit,
17 ... Holder, 18 ... Storage part, 22 ... Gate, 24 ... First connecting part, 24a ... First body,
25 ... 2nd connection part, 25a ... 2nd main body, 35 ... Operation member.

Claims

A plurality of endoscope units for observing the body,
At least one imaging device for imaging an observation object;
An imaging unit for displaying the image of the imaged observation object;
A coupling mechanism for selectively detachably coupling the plurality of endoscope units to the imaging unit;
The imaging unit includes a housing having a waterproof structure as a whole,
In the case,
A power supply unit that can replace batteries,
A monitor that displays images;
A determination circuit having a first function of determining the type of the imaging device;
A plurality of signal circuits corresponding to the type of the imaging device;
Based on the determination result of the determination circuit, a setting circuit for setting a signal circuit for processing an output signal of the imaging device is accommodated from among the plurality of signal circuits.
The coupling mechanism is
A first connecting portion provided in the imaging unit;
A second connecting portion provided in each of the plurality of endoscope units, and detachably connectable to the first connecting portion;
In a state where the first connection portion and the second connection portion are connected, a waterproofing mechanism for connection that seals the inside of the connection mechanism, and
In a state where one endoscope unit selected from the plurality of endoscope units is connected to the imaging unit via the connection mechanism, the user directly observes the operation of the endoscope unit. A video endoscope system capable of simultaneously viewing an image displayed on the imaging unit.
The first connecting portion includes a first body attached to the housing,
The second connecting portion includes a second body attached to each of the plurality of endoscope units,
The video endoscope system according to claim 1, wherein the imaging device is arranged in either one of the first main body or the plurality of endoscope units.
The imaging unit includes a hinge mechanism that supports the housing,
In the first connecting portion, the first main body is attached to the housing via the hinge mechanism,
In a state where one endoscope unit selected from the plurality of endoscope units is connected to the imaging unit via the connection mechanism, the user rotates the casing by the hinge mechanism. The video endoscope system according to claim 2, wherein the video endoscope system can be swung.
In the video endoscope system in which the imaging device is disposed in each of the plurality of endoscope units,
The determination circuit has a second function of determining the types of the plurality of endoscope units in addition to the first function,
In a state where one endoscope unit selected from the plurality of endoscope units is connected to the imaging unit via the connection mechanism, the determination circuit is configured to connect the internal unit connected to the imaging unit. The video endoscope system according to claim 2, wherein the type of the endoscope unit and the type of the imaging device arranged in the endoscope unit are determined.
The power supply unit is
A holder for detachably holding a plurality of batteries;
An accommodating portion that is provided in the housing and accommodates the holder in an extractable manner;
A lid for releasably closing the accommodating portion;
The video endoscope system according to claim 1, further comprising: a closing waterproof mechanism that seals the housing portion in a state where the housing portion is closed by the lid.
The imaging unit has a recording / playback function for recording an image of an observation target imaged by the imaging device and playing back the recorded image;
The video endoscope system according to claim 1, wherein the housing has a configuration in which a storage medium for storing an image is removably held.