Medical observation system, light source apparatus, light guide cable and observation apparatus

Abstract

To provide a technology advantageous for adaptively providing light having a characteristic corresponding to each of a plurality of types of device (including an endoscope) connectable to a light source apparatus to a medical apparatus connected to the light source apparatus.SOLUTION: In order to solve the above problem, according to the present disclosure, a medical observation system is provided which comprises a light guide cable for guiding an illumination light to a device, a light source for emitting the illumination light and a connection detection light toward the light guide cable, an optical detection unit for detecting a wavelength of a return light of the connection detection light, and a connection determination unit for determining at least one of the presence or absence of a connection between the light guide cable and the device, and the presence or absence of a connection between the light guide cable and the light source based on the wavelength of the return light of the connection detection light.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present disclosure relates to a medical observation system, a light source device, a light guide cable, and an observation device. [Background technology]

[0002] Light source devices used in endoscopes such as rigid endoscopes are sometimes connectable to other medical observation devices. For example, during abdominal surgery, the light source device may be connected to a medical lighting device such as a ring light. In this case, the light emitted by the light source device is emitted as illumination light from the medical lighting device, illuminating the entire surgical field. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-321338 Summary of the Invention [Problem to be solved by the invention]

[0004] However, due to differences in their applications, the characteristics of the illumination light may need to be changed when the light source device is connected to an endoscope and when it is connected to a medical lighting device. However, because the light source device can be connected to both an endoscope and a medical lighting device, there is a risk that the selected illumination light may be transmitted incorrectly.

[0005] The present disclosure provides a technology that is advantageous for adaptively providing light having characteristics corresponding to each of multiple types of equipment (including biological observation equipment such as endoscopes) that can be connected to a light source device to a medical device connected to the light source device. [Means for solving the problem]

[0006] In order to solve the above problems, according to the present disclosure, a light guide cable for guiding illumination light to the device; a light source that emits the illumination light and the connection detection light toward the light guide cable; a light detection unit that detects the wavelength of the return light of the connection detection light; a connection determination unit that determines whether or not the light guide cable is connected to the device and whether or not the light guide cable is connected to the light source based on the wavelength of the returned light of the connection detection light; A medical observation system is provided, comprising:

[0007] A reflecting member including a wavelength converting member may be provided at a connection portion between the device and the light guide cable or on the light guide cable, and the wavelength converting member may convert and reflect the wavelength of the connection detection light.

[0008] A reflecting member including the wavelength converting member may be provided at a connection portion of the device with the light guide cable.

[0009] The light guide cable may include a wavelength conversion member that converts light to a different wavelength for each device, and the connection determination unit may determine the type of device connected to the light guide cable based on the wavelength of the return light of the connection detection light.

[0010] the first imaging device is an endoscope and the second imaging device is an exoscope; The connection determination unit may determine whether there is no connection, a connection to a rigid endoscope, or a connection to an exoscope, based on the wavelength of the return light of the connection detection light.

[0011] The type of the device may be determined based on whether or not there is a change in the wavelength of the return light of the connection detection light.

[0012] The wavelength conversion member may have a heat resistance temperature of 115° C. or higher.

[0013] In the wavelength conversion member, the phosphor may be held by a light-transmitting material that can withstand a heat temperature of 115° C. or higher.

[0014] The phosphor may be covered with a cover glass and sealed with solder.

[0015] the light detection unit includes a spectroscopic unit that reflects at least a portion of the returning light in a first wavelength band that has the same wavelength as the emitted light, and transmits at least a portion of the returning light in a second wavelength band that has been wavelength-converted and is different from the first wavelength band; a first detection unit that detects the return light of the first wavelength band and the return light of the second wavelength band that do not pass through a spectroscopic unit; a second detection unit that detects light of the second wavelength band that has passed through the spectroscopic unit, The connection determination unit may determine the connected device based on detection results of the first detection unit and the second detection unit.

[0016] the light detection unit includes a spectroscopic unit that transmits at least a portion of the returning light in a first wavelength band that is the same wavelength as the emitted light, and reflects at least a portion of the returning light in a second wavelength band that is wavelength-converted and different from the first wavelength band; a first detector that detects return light of the first wavelength band that has passed through the spectroscopic unit, and a second detector that detects return light of the second wavelength band that has been reflected by the spectroscopic unit; The connection determination unit may determine the connected device based on detection results of the first detection unit and the second detection unit.

[0017] The light guide cable may have a connection detection transmission path and an illumination light transmission path that is separate from the connection detection transmission path.

[0018] The connection detection transmission path may be an optical fiber bundle that forms a circular ring shape, the reflecting member may also be circular ring shaped, and the illumination light transmission path may be disposed at the center of a circular ring shaped light guide cable.

[0019] The connection detection transmission path may be disposed at a portion of the illumination light transmission path in a circumferential direction.

[0020] The reflecting member including the wavelength converting member may be provided at a connection portion of the light guide cable with the light source.

[0021] The connection determination unit may determine the connection between the light guide cable and the device.

[0022] The connection determination unit may determine the connection between the light guide cable and the light source.

[0023] In order to solve the above problems, according to the present disclosure, A medical light source device, an emission section that emits the illumination light and the connection detection light toward a light guide cable that guides the illumination light and the connection detection light to the device; a light detection unit that detects the wavelength of the return light of the connection detection light, an output unit that outputs information related to the wavelength of the return light to a connection determination unit that determines whether or not the light guide cable is connected to the device and whether or not the light guide cable is connected to the light source, based on the wavelength of the return light of the connection detection light; and A medical light source device comprising:

[0024] In order to solve the above problems, according to the present disclosure, A light guide cable, an illumination light transmission path that guides the illumination light emitted from the light source to the device; a connection detection transmission path that guides the connection detection light emitted from the light source to the device, The connection detection transmission path is provided with a light guide cable that transmits the return light of the connection detection light from the device to a return light detection unit that detects the wavelength of the return light of the connection detection light to determine at least one of whether or not the light guide cable is connected to the device and whether or not the light guide cable is connected to the light source.

[0025] In order to solve the above problems, according to the present disclosure, A medical observation device, an illumination light incident portion into which illumination light emitted from the light source enters via a light guide cable; a reflecting member configured to convert the wavelength of the connection detection light emitted from the light source and reflect it, thereby causing returned light of the connection detection light to be incident on a returned light detecting unit that detects the wavelength of the returned light in order to determine at least one of whether the light guide cable is connected to the observation device and whether the light guide cable is connected to the light source; A medical observation device comprising:

[0026] The medical observation device may have a detachable light guide cable, and the reflecting member may be provided at a connection portion of the imaging device with the light guide cable.

[0027] The medical observation device may include a main body and the light guide cable, and the reflecting member may be provided at a connection portion of the light guide cable with the light source. [Brief explanation of the drawings]

[0028] [Figure 1] FIG. 1 is a diagram showing an example of a medical observation system. [Figure 2] FIG. 1 is a conceptual diagram showing an example of use of a medical observation system configured as an endoscope device. [Figure 3] FIG. 1 is a conceptual diagram showing an example of use of a medical observation system configured as a surgical field illumination observation device. [Figure 4] FIG. [Figure 5] FIG. 1 is a block diagram showing an example of the functional configuration of a medical observation system equipped with a rigid endoscope. [Figure 6] FIG. 1 is a block diagram showing an example of the functional configuration of a medical observation system equipped with a ring light. [Figure 7] FIG. 2 is a block diagram showing a configuration example of an optical connection unit. [Figure 8] FIG. 10 is a diagram showing an example in which the reflective member is composed of only a mirror surface. [Figure 9] 10A and 10B are diagrams showing an example in which the reflecting member has a phosphor as a wavelength conversion member. [Figure 10] FIG. 10 is a diagram showing the optical characteristics of a dichroic mirror. [Figure 11] FIG. 10 is a diagram showing a second configuration example of the light detection unit. [Figure 12] FIG. 10 is a diagram showing a second configuration example of the light detection unit when a fluorescent material is included. [Figure 13] FIG. 10 is a diagram showing the optical characteristics of a dichroic mirror in the second configuration example of the photodetector unit. [Figure 14] 10A and 10B are diagrams showing an example of the configuration of a reflecting member according to the third embodiment. [Figure 15] FIG. 10 is a view showing an example of a cross section of a light guide cable according to a fourth embodiment. [Figure 16] 5A and 5B are diagrams schematically showing examples of connections when connecting a light guide cable to a light source device. [Figure 17] FIG. 11 is a block diagram showing an example of the configuration of a reflecting member according to a fifth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0029] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings.

[0030] FIG. 1 is a diagram showing an example of a medical observation system 10, particularly showing a case in which the medical observation system is configured as an endoscopic device equipped with a rigid endoscope (a medical observation device for internal viewing for observing living organisms) 18. FIG. 2 is a conceptual diagram showing an example of use of the medical observation system 10 configured as an endoscopic device (particularly an example of light emission from the rigid endoscope 18). FIG. 3 is a conceptual diagram showing an example of use of the medical observation system 10 configured as an operative field illumination observation device in which a ring light (a medical observation device for visual observation for observing living organisms) 19 is connected to a light source device 13. Note that the ring light 19 in this embodiment corresponds to an exoscope.

[0031] A medical observation system 10 is used to observe a target area of ​​a subject 90, such as a patient, via captured images or with the naked eye. The medical observation system 10 shown in Figure 1 comprises an imaging device 11, a control device 12, a light source device 13, and a display device 14.

[0032] The light source device 13 is connectable to a rigid endoscope 18 (see FIGS. 1 and 2) and a ring light 19 (see FIG. 3), and emits light under the control of the control device 12. The light source device 13 is capable of emitting light in any wavelength range, and can have any device configuration capable of emitting, for example, white light and / or narrowband light. The light source device 13 is also configured to be capable of emitting light for identifying a device connected to the light guide cable 16. The rigid endoscope 18 and ring light 19 according to this embodiment may also be referred to as devices or imaging devices.

[0033] The white light referred to here is light containing visible light components of various colors, and the specific spectral characteristics (wavelength distribution) are not limited as long as the light is perceptible as white. On the other hand, narrowband light contains light in a specific wavelength range within the visible light wavelength range and the non-visible light wavelength range as its main light component, and has any spectral characteristics based on a central wavelength (peak wavelength). The light source device 13 may emit, as narrowband light, excitation light (e.g., infrared light) for exciting a fluorescent staining reagent used to stain the tissue (cells) of the observation target to emit fluorescence.

[0034] The rigid endoscope 18 of this example is connected to the light source device 13 via a detachable light guide cable 16. That is, one end of the light guide cable 16 is detachably attached to the light source device 13, and the other end is detachably connected to an optical connection unit 22 of the rigid endoscope 18. Note that, depending on the device, one end of the light guide cable 16 may be fixed to the optical connection unit 22. Furthermore, the optical connection unit 22 according to this embodiment corresponds to the illumination light entrance unit.

[0035] Similarly, the ring light 19 (see FIG. 3) of this example is connected to the light source device 13 via a detachable light guide cable 16 (first type light guide section). That is, one end of the light guide cable 16 is detachably attached to the light source device 13, and the other end is detachably connected to the optical connection section 22 of the ring light 19. Depending on the device, one end of the light guide cable 16 may be fixed to the optical connection section 22.

[0036] The light source device 13 is also configured to be able to emit light via the light guide cable 16 for identifying a device connected to the light guide cable 16. For example, a portion of the light emitted via the light guide cable 16 is returned and received again via the light guide cable 16. This makes it possible to determine at least one of whether the light guide cable 16 is connected to an apparatus and whether the light guide cable 16 is connected to the light source device 13. The light source device 13 is also configured to be able to identify the type of device that is the target of emitting light from the light source device 13. Details will be described later.

[0037] 1 and 2 has an insertion section 20, and an optical connection section 22 and an imaging connection section 23 provided on the base end side of the insertion section 20. A light transmission section (light guide) and an objective lens are provided on the end face of an insertion tip section 21 of the insertion section 20 located opposite the base end side. Light transmitted from the light source device 13 via a light guide cable 16 is emitted from the light transmission section on the tip end face of the insertion section 20, and the reflected light (observation light / imaging light) is incident on the objective lens and guided through the inside of the insertion section 20 to the imaging connection section 23.

[0038] The imaging connection unit 23 is detachably connected to the connection unit of the imaging device 11. Observation light transmitted via the objective lens passes through the imaging connection unit 23 and enters the imaging device 11, where it is received by the imaging device 11. The imaging connection unit 23 can also function as an eyepiece. With the imaging connection unit 23 detached from the imaging device 11, a user such as an operator can also directly view the observation light via the imaging connection unit 23.

[0039] 3 includes a main body 30, an optical connection unit 22 provided on the base end side of the main body 30, a light emitting unit 31 provided integrally with the main body 30, and an imaging connection unit 33. Light transmitted from the light source device 13 via the light guide cable 16 is emitted from the light emitting unit 31, and the reflected light (observation light / imaging light) is guided to the imaging connection unit 33 via an optical system (not shown) provided inside the main body 30.

[0040] The imaging connection unit 33 is detachably connected to the connection unit of the imaging device 11, and observation light transmitted via the optical system passes through the imaging connection unit 33 and enters the imaging device 11, where it is received by the imaging device 11. The imaging connection unit 33 can also function as an eyepiece. With the imaging connection unit 33 detached from the imaging device 11, a user such as an operator can also directly view the observation light via the imaging connection unit 33.

[0041] The imaging device 11 is provided so as to be connectable to the rigid endoscope 18 and the ring light 19, and receives observation light via the connected rigid endoscope 18 or ring light 19. The imaging device 11 is connected to the control device 12 via a signal transmission cable 15 (see FIG. 1; not shown in FIGS. 2 and 3). A captured image corresponding to the observation light received via the rigid endoscope 18 or ring light 19 is sent from the imaging device 11 to the control device 12 via the signal transmission cable 15.

[0042] The control device 12 is connected to the imaging device 11, the light source device 13, and the display device 14, and controls the imaging device 11, the light source device 13, and the display device 14. The control device 12 can also control the rigid endoscope 18 or the ring light 19 connected to the imaging device 11 via the imaging device 11. The control device 12, for example, causes the display device 14 to display the captured image sent from the imaging device 11, and controls the light emission of the light source device 13 as described below.

[0043] When a rigid endoscope 18 is used in the above-described medical observation system 10 (see FIG. 2), an insertion tip 21 of the rigid endoscope 18 is inserted into the abdominal cavity (inside the body) inside the peritoneum 91 of a subject 90, and light is emitted from the insertion tip 21 inside the abdominal cavity. On the other hand, when a ring light 19 is used (see FIG. 3), the ring light 19 emits light from a light-emitting unit 31 outside the subject 90 (peritoneum 91).

[0044] FIG. 4 is a diagram showing an example of a cross-sectional view of the light guide cable 16 according to this embodiment. As shown in FIG. 4, the light guide cable 16 according to this embodiment has a light guide 16a for connection detection and a light guide 16b for transmitting illumination light. The light guide 16a for connection detection constitutes a transmission path for connection detection. The light guide 16b for transmitting illumination light constitutes an illumination light transmission path. As such, the light guide cable 16 according to this embodiment has an optical transmission path for connection detection in addition to the illumination light transmission path within the light guide cable. Furthermore, in the light guide cable 16 according to this embodiment, the transmission path for connection detection and the illumination light transmission path are configured as separate paths. This prevents the illumination light and the light for connection detection from mixing together.

[0045] Next, we will explain an example of the functional configuration of the medical observation system 10. Fig. 5 is a block diagram showing an example of the functional configuration of the medical observation system (endoscopic device) 10 equipped with a rigid endoscope 18. Fig. 6 is a block diagram showing an example of the functional configuration of the medical observation system (operative field illumination observation device) 10 equipped with a ring light 19.

[0046] 5 and 6, the medical observation system 10 (endoscopic device and surgical field illumination observation device) has the same configuration as the imaging device 11, the control device 12, and the light source device 13. That is, the medical observation system 10 constitutes an endoscope device (see FIG. 2) by connecting a rigid endoscope 18 to the imaging device 11 and the light source device 13, and constitutes an surgical field illumination observation device (see FIG. 3) by connecting a ring light 19 to the imaging device 11 and the light source device 13.

[0047] The light source device 13 shown in FIG. 5 includes a control unit 40, a storage unit 41, a first light source 42, a second light source 43, a lens unit 44, a connector 45, and a light detection unit 46. The control unit 40 of the light source device 13 controls the first light source 42, the second light source 43, and the lens unit 44 under the control of the control device 12 (particularly the control unit 60). In this example, the lens unit 44 is separated into a lens unit for the light guide 16a (see FIG. 4) and a lens unit for the light guide 16b (see FIG. 4). The lens unit 44 according to this embodiment corresponds to the emission unit.

[0048] The first light source 42 emits white light, and the second light source 43 emits narrowband light. The connection detection light emitted by the first light source 42 and the second light source 43 passes through a lens unit for the light guide 16a (see FIG. 4) in the lens unit 44 and travels toward the connection detection light guide 16a (see FIG. 4) connected to the connector 45. The connection detection light traveling along optical path L1 in the light guide 16a is reflected by a reflecting member of the optical connection unit 22. The returning light reflected by the reflecting member travels along optical path L2 (L1) and is received by the light detection unit 46. Note that the emission of white light by the first light source 42 and the emission of narrowband light by the second light source 43 may be performed simultaneously, alternately, or only one of them may be performed. For example, when detecting a connection, the first light source 42 emits white light.

[0049] The light detection unit 46 outputs a reception signal corresponding to the wavelength of the returned light to the connection determination unit 40a of the control unit 40. Based on the wavelength of the returned light of the connection detection light, the connection determination unit 40a determines at least one of whether the light guide cable 16 is connected to the device (rigid endoscope 18, ring light 19) and whether the light guide cable 16 is connected to the light source 42. Based on the wavelength of the returned light of the connection detection light, the connection determination unit 40a also determines whether there is no connection, whether there is a connection to the rigid endoscope 18, or whether there is a connection to the ring light 19. The light detection unit 46 will be described in detail later.

[0050] Similarly, the light emitted by the first light source 42 and the second light source 43 passes through a lens unit for the light guide 16b (see FIG. 4) in the lens unit 44 and travels toward the light guide 16b (see FIG. 4) for transmitting the illumination light, which is connected to the connector 45. The illumination light that travels along the optical path L0 in the light guide 16b is irradiated into the body via the optical connection unit 22 and the light transmission unit 71. Note that the emission of white light by the first light source 42 and the emission of narrowband light by the second light source 43 may be performed simultaneously, alternately, or only one of them may be performed. Furthermore, a light source different from the light source used to emit the connection detection light may be used to emit the illumination light.

[0051] Furthermore, the control unit 40 accesses the storage unit 41 as necessary, reads information (which may include data and programs) from the storage unit 41, and stores new information in the storage unit 41.

[0052] 5 includes a control unit 50, a lens unit 51, an image sensor 52, a signal processing unit 53, and a communication unit 54. Observation light (photographing light) L1 incident on the image sensor 11 is guided by the lens unit 51 and received by the image sensor 52. The image sensor 52 is configured, for example, with a CMOS (Complementary Metal-Oxide-Semiconductor) image sensor or a CCD (Charge-Coupled Device) image sensor. A photographed image output from the image sensor 52 that has received the observation light L1 is subjected to image processing (signal processing) in the signal processing unit 53 and then sent to the control device 12 via the communication unit 54.

[0053] The lens unit 51, the image pickup element 52, the signal processing unit 53, and the communication unit 54 are driven under the control of the control unit 50. The control unit 50 of the image pickup device 11 is controlled by the control device 12 (particularly the control unit 60).

[0054] 5 includes a control unit 60, a communication unit 61, an image generation unit 62, a storage unit 63, an acquisition unit 64, and a touch panel 65. The touch panel 65 also includes an input unit 65a and an output unit 65b. The touch panel 65 according to this embodiment corresponds to the display unit.

[0055] The captured image received from the communication unit 54 of the imaging device 11 via the signal transmission cable 15 and the communication unit 61 undergoes various processes in the image generation unit 62. For example, if the captured image is a normal image based on white light, the captured image undergoes arbitrary image processing by the normal light processing unit 62a of the image generation unit 62, and then is processed into a display image by the display control unit 62c, and the display image is output to the display device 14 and the acquisition unit 64. If the captured image is an excited luminescence image (fluorescence image) of a fluorescent staining reagent, the captured image undergoes arbitrary image processing by the special light processing unit 62b of the image generation unit 62, and then is processed into a display image by the display control unit 62c, and the display image is output to the display device 14 and the acquisition unit 64. The display device 14 displays the display image received from the image generation unit 62. Data used and / or data generated by the image generation unit 62 (each of the normal light processing unit 62a to the display control unit 62c) is sent to the control unit 60 as necessary.

[0056] The control unit 60 controls the image generation unit 62, the storage unit 63, the acquisition unit 64, and the touch panel 65. The acquisition unit 64 acquires irradiation environment information related to the irradiation environment. That is, the acquisition unit 64 acquires a determination signal from the connection determination unit 40a and can determine which of the rigid endoscope 18 and the ring light 19 connected to the light source device 13 is irradiating.

[0057] For example, instructions and information input by the user via the input unit 65a are sent to the control unit 60 and are used as appropriate for control by the control unit 60. The output unit 65b is driven under the control of the control unit 60 and outputs visual information (display information) and audio information to present various types of information to the user. The control unit 60 also accesses the storage unit 63 as needed, reads information (which may include data and programs) from the storage unit 63, and stores new information in the storage unit 63.

[0058] 5 has a lens unit 70 and a light transmitting unit (light guide) 71 in addition to the optical connecting unit 22 and the imaging connecting unit 23 described above. Illumination light L0 (white light and / or narrowband light) transmitted from the light source device 13 via the light guide cable 16 passes through the optical connecting unit 22, is guided by the light transmitting unit 71, and is emitted from the end face of the insertion tip portion 21 (see FIG. 2) of the insertion section 20. On the other hand, observation light L3 reflected from the observation object and incident on the rigid endoscope 18 is guided by the lens unit 70, passes through the imaging connecting unit 23, and then is guided by the lens unit 51 of the imaging device 11 and is received by the imaging element 52.

[0059] 6 includes a lens unit 75 and a light transmitting unit (light guide) 76 in addition to the optical connecting unit 22 and the imaging connecting unit 23. Illumination light L0 (white light and / or narrowband light) transmitted from the light source device 13 via the light transmitting unit 76 is guided by the light transmitting unit 76 and emitted from the light emitting unit 31. On the other hand, observation light L3 reflected from the observation object and incident on the ring light 19 is guided by the lens unit 75 and passes through the imaging connecting unit 33, and then guided by the lens unit 51 of the imaging device 11 and received by the imaging element 52.

[0060] [Example of optical connection configuration] Fig. 7 is a block diagram showing an example of the configuration of the optical connection unit 22. As shown in Fig. 7, the optical connection unit 22 has a reflective member 220. In this way, the reflective member 220 is provided at the optical connection unit 22 with the detachable light guide cable 16. This reflective member 220 reflects light of different wavelengths depending on the type of device having the optical connection unit 22. In other words, the wavelength of the light reflected by the reflective member 220 is associated with the type of device connected to the optical connection unit 22.

[0061] For example, in the rigid endoscope 18, the reflective surface is configured with a mirror surface. Details will be described later using FIG. 8. On the other hand, in the reflective member 220 of the ring light 19, incident light is reflected by the reflective surface via, for example, a phosphor as the wavelength conversion member 220a. As described above, multiple phosphors can be used depending on the type of device to be connected. As a result, the wavelength conversion member 220a converts the incident light into reflected light with a different wavelength for each device. In this way, the reflective member 220 can change the wavelength of the reflected light to a different wavelength for each device. Note that the reflective member 220 of the rigid endoscope 18 may be configured to include a phosphor, while the reflective member 220 of the ring light 19 may be configured not to include a phosphor.

[0062] 7, the light guide cable 16 has an illumination light transmission light guide 16b that guides illumination light emitted from the light source 42 (43) to the optical connection parts 22 of the imaging devices 18, 19 via the lens unit 44, and a connection detection light guide 16a that guides connection detection light emitted from the light source 42 (43) to the optical connection parts 22 of the imaging devices 18, 19 via the lens unit 44. With this configuration, the connection detection light guide 16a transmits return light L2 of the connection detection light from the imaging devices 18, 19 to the light detection unit 46 to determine at least one of the presence or absence of connection between the light guide cable 16 and the imaging devices 18, 19 and the presence or absence of connection between the light guide cable 16 and the light source 42 (43).

[0063] In this way, the connection detection light that travels through the optical path L1 of the light guide 16a for detecting the connection of the light guide cable 16 via the lens unit 44 is reflected by the reflecting member 220 of the optical connecting unit 22. The returning light reflected by the reflecting member 220 travels through the optical path L2 of the light guide 16a and is received by the light detecting unit 46.

[0064] On the other hand, the illumination light that has traveled through the optical path L0 of the light guide 16b for transmitting illumination light via the lens unit 44 is emitted from the end face of the insertion tip portion 21 (see FIG. 2) of the insertion section 20 via the lens unit 70 in addition to the optical connecting portion 22 and the imaging connecting portion 23 (see FIG. 5) in the rigid endoscope 18 as described above. Similarly, the illumination light that has traveled through the optical path L0 of the light guide 16b for transmitting illumination light via the lens unit 44 is emitted from the light emitting section 31 via the lens unit 75 and the light transmitting portion (light guide) 76 in addition to the optical connecting portion 22 and the imaging connecting portion 23 (see FIG. 6) in the ring light 19 as described above.

[0065] [First example of the optical detection unit configuration] Here, a first configuration example of the light detection unit 46 will be described with reference to Figs. 8 to 10. Fig. 8 is a diagram showing an example in which the reflecting member 220 is composed of only a mirror surface. Fig. 9 is a diagram showing an example in which the reflecting member 220 has a phosphor as the wavelength conversion member 220a. Fig. 10 is a diagram showing the optical characteristic f10 of a dichroic mirror. The horizontal axis represents the wavelength λ, and the vertical axis represents the transmittance of the dichroic mirror.

[0066] As shown in FIGS. 8 and 9, the wavelength converting member 220a converts the wavelength λ=a of incident light into a wavelength λ=b, and reflects it as returned light.

[0067] As a result, when the wavelength conversion member 220a is not present, the light having the wavelength λ=a, which is the first wavelength band and has the same wavelength as the emitted light, becomes the returned light. On the other hand, when the wavelength conversion member 220a is present, the light having the wavelength λ=b becomes the returned light in addition to the light having the wavelength λ=a.

[0068] Furthermore, wavelength conversion member 220a is a phosphor that can withstand a heat temperature (without deformation) of 115° C. or higher. Thus, wavelength conversion member 220a can withstand the temperature of an autoclave (approximately 115° C.-135° C.).

[0069] The optical detection unit 46 detects the wavelength of the return light L2 of the connection detection light L1. The optical detection unit 46 has a first detection unit 460, a second detection unit 462, and a spectroscopic unit 464. In this configuration, the two detection units 460, 462 are arranged side by side.

[0070] The first detector 460 has a light receiving element and outputs a first light receiving signal to the connection determination unit 40a (see FIGS. 5 and 6). For example, the first detector 460 outputs the first light receiving signal as a high level signal when it receives reflected light with an amount of light equal to or greater than a predetermined value. If it does not receive reflected light with an amount of light equal to or greater than the predetermined value, it outputs the first light receiving signal as a low level signal. For example, the first detector 460 outputs the first light receiving signal as a high level signal when it receives reflected light λ=a or greater.

[0071] The second detector 462 has a light receiving element and outputs a second light receiving signal to the connection determining unit 40a (see FIGS. 5 and 6). For example, the second detector 462 outputs the second light receiving signal as a high level signal when it receives reflected light with an amount of light equal to or greater than a predetermined value. If it does not receive reflected light with an amount of light equal to or greater than the predetermined value, it outputs the second light receiving signal as a low level signal. For example, the second light receiving unit 460 outputs the second light receiving signal as a high level signal when it receives reflected light λ=a or greater.

[0072] The spectroscopic unit 464 is, for example, a dichroic mirror. As shown in FIG. 10 , the spectroscopic unit 464 reflects almost all of the return light L2 whose reflected light λ has a wavelength of a or less. On the other hand, the spectroscopic unit 464 transmits almost all of the return light L2 whose reflected light λ has a wavelength of b or more. In this way, the spectroscopic unit 464 transmits at least a portion of the return light having a wavelength λ=a, which is the first wavelength band that is the same wavelength as the emitted wavelength, and reflects at least a portion of the return light having a wavelength λ=b, which is the second wavelength band that is wavelength-converted and different from the first wavelength band. As a result, when the reflecting member 220 has the wavelength converting member 220a, the spectroscopic unit 464 causes the return light of the connection detection light to travel toward the second detecting unit 462. On the other hand, when the reflecting member 220 does not have the wavelength converting member 220a, the spectroscopic unit 464 acts to almost completely prevent the return light of the connection detection light from traveling toward the second detecting unit 462.

[0073] As can be seen from these, the first detection unit 460 detects the returning light of the first wavelength band (λ=a) and the returning light of the second wavelength band (λ=b) that does not pass through the spectroscopic unit 464. The second detection unit 462 detects the light of the second wavelength band (λ=b) that has passed through the spectroscopic unit 464.

[0074] In other words, when the return light L2 travels to the first detection unit 460 and almost no return light L2 travels to the second detection unit 462, the wavelength of the return light is reflected light λ = a. On the other hand, when the return light of the connection detection light travels to the first detection unit 460 and the second detection unit 462, the wavelength of the return light L2 is reflected light λ = a, b. Furthermore, when the return light of the connection detection light does not travel to the first detection unit 460 and the second detection unit 462, this indicates that the light guide cable 16 and the device are not connected. Alternatively, this indicates that the light guide cable 16 and the light source device 13 are not connected. In this way, the light detection unit 46 can realize a configuration for determining the wavelength of the return light L2 at a lower cost than a spectroscope.

[0075] [Connection detection section judgment example] The connection determination unit 40a determines, based on the wavelength of the returned light of the connection detection light, at least one of whether the light guide cable 16 is connected to the device and whether the light guide cable 16 is connected to the light source device 13. That is, when the wavelength λ of the returned light of the connection detection light is equal to a or equal to a, b, the connection determination unit 40a determines that the light guide cable 16 is connected to the device and that the light guide cable 16 is connected to the light source device 13.

[0076] On the other hand, if the connection determination unit 40a cannot determine the wavelength of the return light of the connection detection light (for example, if the return light of the connection detection light cannot be detected), it determines that the light guide cable 16 is not connected to the imaging equipment, or that the light guide cable 16 is not connected to the light source device 13.

[0077] Furthermore, the connection determination unit 40a determines the type of imaging device connected to the light guide cable 16 based on the wavelength of the returned light of the connection detection light. The connection determination unit 40a determines the type of imaging device 18, 19 associated with the wavelength of the returned light based on the wavelength of the returned light of the connection detection light. For example, when the wavelength λ=a, the connection determination unit 40a determines that a device associated with a reflecting member 220 that does not have a wavelength conversion member 220a is connected. On the other hand, when the wavelength λ=a, b of the returned light of the connection detection light, the connection determination unit 40a determines that a device associated with a reflecting member 220 that has a wavelength conversion member 220a is connected.

[0078] That is, the connection determination unit 40a determines, based on a combination of the first and second received light signals, at least one of whether the light guide cable 16 is connected to the imaging devices 18, 19 and whether the light guide cable 16 is connected to the light source 42 (43) of the light source device 13. The connection determination unit 40a also determines the type of imaging devices 18, 19 connected to the light guide cable 16 based on a combination of the first and second received light signals.

[0079] More specifically, when the first light-receiving signal and the second light-receiving signal are both low-level signals during irradiation of the connection detection light, the connection determination unit 40a determines that the light guide cable 16 and the image capturing devices 18, 19 are not connected. Alternatively, when the first light-receiving signal and the second light-receiving signal are both low-level signals during irradiation of the connection detection light, the connection determination unit 40a determines that the light guide cable 16 and the light source 42 (43) of the light source device 13 are not connected. On the other hand, when the connection detection light is irradiated and at least one of the first light-receiving signal and the second light-receiving signal is high-level signals, the connection determination unit 40a determines that the light guide cable 16 and the image capturing devices 18, 19 are connected, and that the light guide cable 16 and the light source 42 (43) of the light source device 13 are connected.

[0080] Furthermore, when only the first light-receiving signal is a high-level signal, the connection determining unit 40a determines that the wavelength λ of the returned light for connection detection is equal to a, and determines that a device associated with the reflecting member 220 that does not have the wavelength converting member 220a is connected. For example, the rigid endoscope 18 is associated with the reflecting member 220 that does not have the wavelength converting member 220a.

[0081] On the other hand, when the first and second received light signals are high-level signals, the connection determination unit 40a determines that the wavelength λ of the return light of the connection detection light is a, b, and determines that a device associated with the reflecting member 220 having the wavelength conversion member 220a is connected. For example, the ring light 19 is associated with the reflecting member 220 having the wavelength conversion member 220a. In other words, the connection determination unit 40a determines the type of the imaging devices 18, 19 based on whether or not there is a change in the wavelength of the return light L2 of the connection detection light L1. Information on the correspondence between the wavelength of the return light L2 and the device is stored in advance in the storage unit 41 (see FIGS. 5 and 6). In this way, the connection determination unit 40a determines the type of the imaging devices 18, 19 connected to the light guide cable 16 based on the detection results of the first detection unit 460 and the second detection unit 462.

[0082] It is also possible to determine whether the imaging devices 18, 19 are connected to the light source 42 (43) of the light source device 13 via the light guide cable 16. In this way, the connection determination unit 40a makes determination based on the wavelength of the return light L2, and therefore it is also possible to distinguish the type of the imaging devices 18, 19.

[0083] As described above, the light guide cable 16 has an illumination light transmission path that guides the illumination light emitted from the light source 42 (43) to the imaging devices 18, 19, and a connection detection transmission path that guides the connection detection light emitted from the light source 42 (43) to the imaging devices 18, 19. With this configuration, the connection detection transmission path transmits the return light L2 of the connection detection light from the imaging devices 18, 19 to the light detection unit 46 to determine at least one of the presence or absence of connection between the light guide cable 16 and the imaging devices 18, 19 and the presence or absence of connection between the light guide cable 16 and the light source 42 (43).

[0084] The control unit 40 (mainly the control unit 60) executes control in accordance with the determination of the connection determination unit 40 a. For example, when the connection determination unit 40 a determines that the light guide cable 16 is not connected to the device or that the light guide cable 16 is not connected to the light source device 13, the control unit 40 (mainly the control unit 60) stops the light sources 42 and 43 from emitting light.

[0085] When the connection determination unit 40a determines that the rigid endoscope 18 is connected, the control unit 40 (mainly the control unit 60) executes light emission control for the rigid endoscope 18 on the light sources 42, 43. Similarly, when the connection determination unit 40a determines that the ring light 19 is connected, the control unit 40 (mainly the control unit 60) executes light emission control for the ring light 19 on the light sources 42, 43.

[0086] As described above, the connection determination unit 40a determines at least one of whether the light guide cable 16 is connected to a device and whether the light guide cable 16 is connected to the light source device 13, based on the wavelength of the return light L2 of the connection detection light reflected by the reflecting member 220. This makes it possible to determine whether the imaging devices 18, 19 are connected to the light source 42 (43) of the light source device 13 via the light guide cable 16, and also makes it possible to identify the type of the imaging devices 18, 19, since the determination is made based on the wavelength of the return light L2.

[0087] In this embodiment, two types of reflecting members, one with wavelength conversion member 220a and one without wavelength conversion member 220a, have been described in detail, but multiple types of wavelength conversion members that convert the connection detection light into light of different wavelengths may be provided depending on the type of device. In this case, the light detection unit 46 detects return light from the multiple types of wavelength conversion members, and the connection determination unit 40a makes a determination based on the wavelength of the return light.

[0088] In addition, in this embodiment, an example of determining the type of equipment by determining whether it is a rigid endoscope 18 or a ring light 19 has been described in detail, but this is not limited to this, and it is also possible to determine the type of rigid endoscope 18 or the type of ring light 19.

[0089] (Second embodiment) The medical observation system 10 according to the second embodiment differs from the medical observation system 10 according to the first embodiment in that the optical path of the return light L2 for the first detection unit 460 and the second detection unit 462 is the same up to the spectroscopic unit 464. The differences from the medical observation system 10 according to the first embodiment will be described below.

[0090] [Second example of the optical detection unit configuration] 11 to 13, a second configuration example of the light detection unit 46 will be described. Fig. 11 is a diagram showing a second configuration example of the light detection unit 46 when the reflecting member 220 is composed of only a mirror surface. Fig. 12 is a diagram showing a second configuration example of the light detection unit 46 when the reflecting member 220 has a phosphor as the wavelength conversion member 220a. In this configuration, the two detection units 460, 462 are oriented 90 degrees apart from each other.

[0091] 13 is a diagram showing the optical characteristic f20 of the dichroic mirror in the second configuration example of the light detection unit 46. The horizontal axis represents the wavelength λ, and the vertical axis represents the transmittance of the dichroic mirror. As shown in FIGS. 11 and 12, the wavelength conversion member 220a converts the wavelength λ=a of incident light to wavelength λ=b and reflects it as returned light.

[0092] The spectroscopic unit 464 is, for example, a dichroic mirror. As shown in Fig. 10, the spectroscopic unit 464 transmits almost all of the returned light when the reflected light λ has a wavelength of a or less. On the other hand, the spectroscopic unit 464 reflects almost all of the returned light when the reflected light λ has a wavelength of b or more. In this way, the spectroscopic unit 464 reflects at least a portion of the returned light in a first wavelength band (λ = a), which is the same wavelength as the emitted light, and reflects at least a portion of the returned light L2 in a second wavelength band (λ = b), which is wavelength-converted and different from the first wavelength band.

[0093] Again, as shown in FIG. 11 , when the reflecting member 220 does not have the wavelength conversion member 220a, the wavelength λ of the returned light for connection detection is equal to a. The second detecting unit 462 is disposed on the reflecting surface side of the spectroscopic unit 464, and the first detecting unit 460 is disposed on the transmitting side of the spectroscopic unit 464. As can be seen from this, when the wavelength λ of the returned light is equal to a, the returned light passes through the spectroscopic unit 464, and the first detecting unit 460 outputs a high-level signal as the first received light signal. On the other hand, the second detecting unit 462 outputs a low-level signal as the second received light signal. Furthermore, the optical path of the returned light to the spectroscopic unit 464 can be shared by the first detecting unit 460 and the second detecting unit 462. This allows the cross-sectional area of ​​the optical path of the returned light to the spectroscopic unit 464 to be reduced.

[0094] Again, as shown in FIG. 12 , when the reflecting member 220 includes the wavelength conversion member 220a, the wavelength λ of the returned connection detection light is a, b. The second detecting unit 462 is disposed on the reflecting surface side of the spectroscopic unit 464, and the first detecting unit 460 is disposed on the transmitting side of the spectroscopic unit 464. As can be seen from this, when the wavelength λ of the returned light is a, b, the returned light of wavelength λ=a passes through the spectroscopic unit 464, and the first detecting unit 460 outputs a high-level signal as the first received light signal. On the other hand, the returned light of wavelength λ=b is reflected by the spectroscopic unit 464, and the second detecting unit 462 outputs a high-level signal as the second received light signal. Furthermore, the optical path of the returned light to the spectroscopic unit 464 can be shared by the first detecting unit 460 and the second detecting unit 462. This allows the cross-sectional area of ​​the optical path of the returned light to the spectroscopic unit 464 to be reduced. The first and second configurations of the light detection unit can be selected depending on the shape of the space in which the light detection unit 46 can be arranged.

[0095] As described above, the connection determination unit 40a determines, based on the wavelength of the returned light of the connection detection light, at least one of whether the light guide cable 16 is connected to the device and whether the light guide cable 16 is connected to the light source device 13. That is, when the wavelength λ of the returned light of the connection detection light is equal to a or equal to a, b, the connection determination unit 40a determines that the light guide cable 16 is connected to the device and that the light guide cable 16 is connected to the light source device 13.

[0096] On the other hand, if the connection determination unit 40a cannot determine the wavelength of the return light of the connection detection light (for example, if the return light of the connection detection light cannot be detected), it determines that the light guide cable 16 is not connected to the imaging equipment, or that the light guide cable 16 is not connected to the light source device 13.

[0097] Similarly to the above, the connection determination unit 40a determines the types of the imaging devices 18, 19 connected to the light guide cable 16 based on the wavelength of the returned light of the connection detection light. For example, when the wavelength λ=a, the connection determination unit 40a determines that a device associated with a reflecting member 220 that does not have a wavelength conversion member 220a is connected. On the other hand, when the wavelength λ=a, b of the returned light of the connection detection light, the connection determination unit 40a determines that a device associated with a reflecting member 220 that has a wavelength conversion member 220a is connected.

[0098] As described above, according to this embodiment, the spectroscopic unit 464, which has the property of transmitting wavelength λ=a and reflecting wavelength λ=b, is disposed obliquely with respect to the optical path L2 of the returned light, the second detection unit 462 is disposed on the reflective surface side of the spectroscopic unit 464, and the first detection unit 460 is disposed on the transmission side of the spectroscopic unit 464. This makes it possible to differentiate the combination of output signals from the first detection unit 460 and the second detection unit 462 between when the wavelength of the returned light is λ=a, b and when the wavelength of the returned light is λ=a, thereby enabling the wavelength of the returned light to be determined. This enables determination equivalent to that of the connection determination unit 40a according to the first embodiment, and because the optical path of the returned light to the spectroscopic unit 464 can be shared by the first detection unit 460 and the second detection unit 462, the cross-sectional area of ​​the optical path of the returned light to the spectroscopic unit 464 can be made smaller.

[0099] (Third embodiment) The medical observation system 10 according to the third embodiment differs from the medical observation system 10 according to the first embodiment in that the wavelength conversion member 220a is held on the reflecting member 220 by a light-transmitting material 222. The differences from the medical observation system 10 according to the first embodiment will be described below.

[0100] 14 is a diagram showing an example of the configuration of a reflecting member 220 according to the third embodiment. The light-transmitting material 222 is, for example, a cover glass, and is made of a light-transmitting material that can withstand a temperature of 115° C. or higher (without deformation). The light-transmitting material 222 is sealed by a solder sealing portion 224, and holds the wavelength conversion member 220 a to the reflecting member 220.

[0101] As a result, the structure in which wavelength conversion member 220a, which is a phosphor, is disposed on reflecting member 220, which is a resin, can withstand the temperature of an autoclave (approximately 115° C. to 135° C.).

[0102] (Fourth embodiment) The medical observation system 10 according to the fourth embodiment differs from the medical observation system 10 according to the first embodiment in that the cross section of the light guide cable 16 is rotationally symmetric. The differences from the medical observation system 10 according to the first embodiment will be explained below.

[0103] Fig. 15 is a diagram showing an example of a cross section of the light guide cable 16 according to the fourth embodiment. As shown in Fig. 15, the cross section of the light guide 16a for connection detection according to this embodiment has a rotationally symmetric structure without anisotropy. This allows the light guide cable 16 to be connected to the light source device 13 at any rotation angle.

[0104] Fig. 16 is a diagram schematically illustrating an example of connection when connecting the light guide cable 16 according to the fourth embodiment to the light source device 13. As shown in Fig. 16, the connection detection transmission path in the light guide 16a is arranged in a circular ring shape so as to surround the illumination light transmission path in the light guide 16b.

[0105] The light guide 16a and the light guide 16b are configured as, for example, a bundle of optical fibers 160a. Thus, the connection detection transmission path is the optical fiber bundle 160a that forms a ring shape, the reflecting member 220 is also ring-shaped, and the illumination light transmission path is disposed at the center of the ring-shaped light guide cable 16. Therefore, even if the light guide 16a is twisted, the returning light returns to the position of the light detection unit 46. This allows the positions of the lens unit 44 and the light detection unit 46 to be stably detected at a single location. Therefore, when connecting the light guide cable 16 to the optical connection unit 22, the light guide cable 16 can be connected at any rotation angle. Furthermore, by forming the light guide 16a for connection detection in a ring shape but locating the lens unit 44 and / or the light detection unit 46 in a single location, costs can be reduced. In the light guide cable 16 of the first embodiment shown in FIG. 4, the connection detection transmission path in the light guide 16a is disposed at a portion of the circumferential direction of the illumination light transmission path in the light guide 16b. Although the light guide cable 16 of the first embodiment has anisotropy in the arrangement positions of the lens unit 44 and the light detection unit 46, the light guide cable 16 can have a simpler cable configuration.

[0106] (Fifth embodiment) The medical observation system 10 according to the fifth embodiment differs from the medical observation system 10 according to the first embodiment in that a reflective member 220 is provided on the connection side of the light guide cable 16 with the light source device 13. The differences from the medical observation system 10 according to the first embodiment will be described below.

[0107] Fig. 17 is a block diagram showing an example of the configuration of a reflecting member 220 according to the fifth embodiment. As shown in Fig. 17, the reflecting member 220 is configured on the connection side of the light guide cable 16 with the light source device 13. In this way, when the light guide cable 16 and the light source device 13 are not detachable, the reflecting member 220 can also be provided at the connection part between the light guide cable 16 and the light source device 13. The reflecting member 220 can further configure a wavelength converting member 220a (see Fig. 9).

[0108] In this way, when the light guide cable 16 and the imaging devices 18 and 19 are not detachable, the light guide 16a is not required, which makes it possible to configure the light guide cable 16 more simply.

[0109] The present disclosure may also have the following configuration.

[0110] (1) a light guide cable for guiding illumination light to the device; a light source that emits the illumination light and the connection detection light toward the light guide cable; a light detection unit that detects the wavelength of the return light of the connection detection light; a connection determination unit that determines whether or not the light guide cable is connected to the device and whether or not the light guide cable is connected to the light source based on the wavelength of the returned light of the connection detection light; A medical observation system comprising:

[0111] (2) The medical observation system according to (1), wherein a reflective member including a wavelength conversion member is provided at a connection portion between the device and the light guide cable or on the light guide cable, and the wavelength conversion member converts and reflects the wavelength of the connection detection light.

[0112] (3) The medical observation system according to (2), wherein a reflecting member including the wavelength conversion member is provided at a connection portion of the device with the light guide cable.

[0113] (4) The medical observation system according to (1), further comprising a wavelength conversion member that converts light into a different wavelength for each device, and the connection determination unit determines the type of the device connected to the light guide cable based on the wavelength of the return light of the connection detection light.

[0114] (5) the first imaging device is an endoscope and the second imaging device is an exoscope; The medical observation system according to (1), wherein the connection determination unit determines whether there is no connection, whether the connection is to a rigid endoscope, or whether the connection is to an exoscope, based on the wavelength of the return light of the connection detection light.

[0115] (6) The medical observation system according to (1), wherein the type of the device is determined based on whether or not there is a change in the wavelength of the return light of the connection detection light.

[0116] (7) The medical observation system according to (2), wherein the wavelength conversion member has a heat resistance temperature of 115° C. or higher.

[0117] (8) The medical observation system according to (7), wherein the wavelength conversion member has a phosphor held by a light-transmitting material having a heat resistance temperature of 115° C. or higher.

[0118] (9) The medical observation system according to (8), wherein the phosphor is covered with a cover glass and sealed with solder.

[0119] (10) the light detection unit includes a spectroscopic unit that reflects at least a portion of the returning light in a first wavelength band that has the same wavelength as the emitted light, and transmits at least a portion of the returning light in a second wavelength band that has been wavelength-converted and is different from the first wavelength band; a first detection unit that detects the return light of the first wavelength band and the return light of the second wavelength band that do not pass through a spectroscopic unit; a second detection unit that detects light of the second wavelength band that has passed through the spectroscopic unit, The medical observation system according to (1), wherein the connection determination unit determines the connected device based on the detection results of the first detection unit and the second detection unit.

[0120] (11) the light detection unit includes a spectroscopic unit that transmits at least a portion of the returning light in a first wavelength band that is the same wavelength as the emitted light, and reflects at least a portion of the returning light in a second wavelength band that is wavelength-converted and different from the first wavelength band; a first detector that detects return light of the first wavelength band that has passed through the spectroscopic unit, and a second detector that detects return light of the second wavelength band that has been reflected by the spectroscopic unit; The medical observation system according to (1), wherein the connection determination unit determines the connected device based on the detection results of the first detection unit and the second detection unit.

[0121] (12) The medical observation system according to (1), wherein the light guide cable has a connection detection transmission path and an illumination light transmission path that is separate from the connection detection transmission path.

[0122] (13) The medical observation system according to (12), wherein the connection detection transmission path is an optical fiber bundle that forms a circular ring shape, the reflective member is also circular ring-shaped, and the illumination light transmission path is disposed at the center of a circular ring-shaped light guide cable.

[0123] (14) The medical observation system according to (1), wherein the connection detection transmission path is arranged at a portion of the illumination light transmission path in a circumferential direction.

[0124] (15) The medical observation system according to (1), wherein a reflecting member including the wavelength conversion member is provided at a connection portion of the light guide cable with a light source.

[0125] (16) The medical observation system according to (1), wherein the connection determination unit determines the connection between the light guide cable and the device.

[0126] (17) The medical observation system according to (1), wherein the connection determination unit determines the connection between the light guide cable and the light source.

[0127] (18) A medical light source device, an emission section that emits the illumination light and the connection detection light toward a light guide cable that guides the illumination light and the connection detection light to the device; a light detection unit that detects the wavelength of the return light of the connection detection light, an output unit that outputs information related to the wavelength of the return light to a connection determination unit that determines whether or not the light guide cable is connected to the device and whether or not the light guide cable is connected to the light source, based on the wavelength of the return light of the connection detection light; and A medical light source device comprising:

[0128] (19) A light guide cable, an illumination light transmission path that guides the illumination light emitted from the light source to the device; a connection detection transmission path that guides the connection detection light emitted from the light source to the device, The connection detection transmission path is a light guide cable that transmits the return light of the connection detection light from the device to a return light detection unit that detects the wavelength of the return light of the connection detection light to determine at least one of whether or not the light guide cable is connected to the device and whether or not the light guide cable is connected to the light source.

[0129] (20) A medical observation device, an illumination light incident portion into which illumination light emitted from the light source enters via a light guide cable; a reflecting member configured to convert the wavelength of the connection detection light emitted from the light source and reflect it, thereby causing returned light of the connection detection light to be incident on a returned light detecting unit that detects the wavelength of the returned light in order to determine at least one of whether the light guide cable is connected to the observation device and whether the light guide cable is connected to the light source; A medical observation device comprising:

[0130] (twenty one) The medical observation device according to (20), wherein the light guide cable is detachable from the medical observation device, and the reflecting member is provided at a connection portion of the imaging device with the light guide cable.

[0131] (twenty two) The medical observation device according to (20), comprising a main body of the medical observation device and the light guide cable, wherein the reflective member is provided at a connection part of the light guide cable with the light source. [Explanation of symbols]

[0132] 10 Medical observation system 11 Imaging device 13 Light source device 16 Light guide cable 16a Light guide for connection detection 16b Light guide for transmitting illumination light 18 Rigid endoscope (medical observation device) 19 Ring light (medical observation device) 22 Optical connection part 40a Connection determination unit 42 First Light Source 43 Second Light Source 44 Lens unit 160a optical fiber 220 Reflective material 220a Wavelength conversion material 460 First detection unit 462 Second detection unit 464 Spectroscopic section

Claims

1. a light guide cable for guiding illumination light to the device; a light source that emits the illumination light and the connection detection light toward the light guide cable; a light detection unit that detects the wavelength of the return light of the connection detection light; a connection determination unit that determines whether or not the light guide cable is connected to the device and whether or not the light guide cable is connected to the light source based on the wavelength of the returned light of the connection detection light; A medical observation system comprising:

2. 2. The medical observation system according to claim 1, wherein a reflecting member including a wavelength converting member is provided at a connection portion between the device and the light guide cable or on the light guide cable, and the wavelength converting member converts and reflects the wavelength of the connection detection light.

3. 3. The medical observation system according to claim 2, wherein the reflecting member including the wavelength converting member is provided at a connection portion of the device with the light guide cable.

4. 2. The medical observation system according to claim 1, further comprising a wavelength conversion member that converts light into a different wavelength for each device, and wherein the connection determination unit determines the type of the device connected to the light guide cable based on the wavelength of the return light of the connection detection light.

5. the first imaging device is an endoscope and the second imaging device is an exoscope; The medical observation system according to claim 1 , wherein the connection determination unit determines whether there is no connection, whether the connection is to a rigid endoscope, or whether the connection is to an exoscope, based on the wavelength of the return light of the connection detection light.

6. The medical observation system according to claim 1 , wherein the type of the device is determined based on whether or not there is a change in the wavelength of the return light of the connection detection light.

7. The medical observation system according to claim 2 , wherein the wavelength conversion member has a heat resistance temperature of 115° C. or higher.

8. 8. The medical observation system according to claim 7, wherein the wavelength conversion member has a fluorescent substance held by a light-transmitting material having a heat resistance temperature of 115°C or higher.

9. 9. The medical observation system according to claim 8, wherein the phosphor is covered with a cover glass and sealed with solder.

10. the light detection unit includes a spectroscopic unit that reflects at least a portion of the returning light in a first wavelength band that has the same wavelength as the emitted light and transmits at least a portion of the returning light in a second wavelength band that has been wavelength-converted and is different from the first wavelength band; a first detection unit that detects the return light of the first wavelength band and the return light of the second wavelength band that do not pass through a spectroscopic unit; a second detection unit that detects light of the second wavelength band that has passed through the spectroscopic unit, The medical observation system according to claim 1 , wherein the connection determination unit determines the connected device based on the detection results of the first detection unit and the second detection unit.

11. the light detection unit includes a spectroscopic unit that transmits at least a portion of the returning light in a first wavelength band that has the same wavelength as the emitted light and reflects at least a portion of the returning light in a second wavelength band that has been wavelength-converted and is different from the first wavelength band; a first detector that detects return light of the first wavelength band that has passed through the spectroscopic unit, and a second detector that detects return light of the second wavelength band that has been reflected by the spectroscopic unit, The medical observation system according to claim 1 , wherein the connection determination unit determines the connected device based on the detection results of the first detection unit and the second detection unit.

12. 2. The medical observation system according to claim 1, wherein the light guide cable has a connection detection transmission path and an illumination light transmission path that is separate from the connection detection transmission path.

13. 13. The medical observation system according to claim 12, wherein the connection detection transmission path is an optical fiber bundle that forms a circular ring shape, the reflective member is also circular ring shape, and the illumination light transmission path is disposed at the center of a circular ring-shaped light guide cable.

14. The medical observation system according to claim 1 , wherein the connection detection transmission path is arranged at a portion of the illumination light transmission path in a circumferential direction.

15. 2. The medical observation system according to claim 1, wherein the reflecting member including the wavelength converting member is provided at a connection portion of the light guide cable with the light source.

16. The medical observation system according to claim 1 , wherein the connection determination unit determines the connection between the light guide cable and the device.

17. The medical observation system according to claim 1 , wherein the connection determination unit determines the connection between the light guide cable and the light source.

18. A medical light source device, an emission section that emits the illumination light and the connection detection light toward a light guide cable that guides the illumination light and the connection detection light to the device; a light detection unit that detects the wavelength of the return light of the connection detection light, an output unit that outputs information related to the wavelength of the return light to a connection determination unit that determines whether or not the light guide cable is connected to the device and whether or not the light guide cable is connected to the light source, based on the wavelength of the return light of the connection detection light; and A medical light source device comprising:

19. A light guide cable, an illumination light transmission path that guides the illumination light emitted from the light source to the device; a connection detection transmission path that guides the connection detection light emitted from the light source to the device, The connection detection transmission path is a light guide cable that transmits the return light of the connection detection light from the device to a return light detection unit that detects the wavelength of the return light of the connection detection light to determine at least one of whether or not the light guide cable is connected to the device and whether or not the light guide cable is connected to the light source.

20. A medical observation device, an illumination light incident portion into which illumination light emitted from the light source enters via a light guide cable; a reflecting member configured to convert the wavelength of the connection detection light emitted from the light source and reflect it, thereby causing returned light of the connection detection light to be incident on a returned light detecting unit that detects the wavelength of the returned light in order to determine at least one of whether the light guide cable is connected to the observation device and whether the light guide cable is connected to the light source; A medical observation device comprising:

21. 21. The medical observation device according to claim 20, wherein the light guide cable is detachable, and the reflective member is provided at the illumination light incident portion.

22. 21. The medical observation device according to claim 20, comprising: a main body of the medical observation device; and the light guide cable, wherein the reflecting member is provided at a connection portion of the light guide cable with the light source.

Images