Medical endoscopy system

Abstract

This invention provides a medical endoscope system that simplifies the operation method, eliminating the burden of simultaneously holding the sheath device and the optical sensing device of the endoscope system with separate hands. [Solution] This disclosure provides a medical endoscope system 100 comprising a sheath device 110 having an end, and an optical sensing device 120 arranged to extend within the sheath device and fixed to the end. The optical sensing device has a transmission unit 122 that transmits optical signals received by the optical sensing device via the transmission unit.

Description

[Technical Field]

[0001] The present disclosure relates to a medical endoscope system, and more particularly, to a medical endoscope system that simplifies the operation method and can relieve a user from the burden of simultaneously holding a sheath device and an optical sensing device of the medical endoscope system with separate hands. [Background Art]

[0002] In a conventional medical endoscope system, an optical sensing device (i.e., an endoscope device) is arranged to extend inside a sheath device, but in practice the two devices are separate bodies, and the optical sensing device is not fixed to the sheath device. For this reason, in the arrangement of the conventional medical endoscope system, a user (e.g., a medical professional) needs to hold and operate the optical sensing device and the sheath device separately with two hands. During an operation, the user has to hold and operate the sheath device with one hand, and hold and operate the optical sensing device arranged inside the sheath device with the other hand. Such an operation method greatly increases the difficulty for the user to operate the conventional medical endoscope system. It is difficult for the user to accurately control the sheath device and other medical devices inside the sheath device together while observing through the optical sensing device. Therefore, there is a need to provide a medical endoscope system that simplifies the operation method and allows the user to be relieved from the burden of simultaneously holding the sheath device and the optical sensing device of the medical endoscope system with separate hands. [Summary of the Invention]

[0003] In order to improve the aforementioned drawbacks of the prior art, an object of the present disclosure is to provide a medical endoscope system that simplifies the operation method and allows the user to be relieved from the burden of simultaneously holding the sheath device and the optical sensing device of the medical endoscope system with separate hands.

[0004] Based on the above concept, the present disclosure provides a medical endoscope system comprising a sheath device having an end, and an optical sensing device extending within the sheath device and fixed to the end, wherein the optical sensing device has a transmission unit that transmits optical signals received by the optical sensing device via the transmission unit.

[0005] In a preferred embodiment of this disclosure, the end of the sheath device is a transparent tubular element.

[0006] In a preferred embodiment of the present disclosure, the medical endoscope system further comprises a liquid passage section having a passage opening, which is located at the end of the sheath device, and the medical endoscope system allows liquid to flow out from the end along the liquid passage section.

[0007] In a preferred embodiment of the present disclosure, the optical sensing device has an optical sensing unit, and the medical endoscope system allows a liquid to flow to the end and come into contact with the optical sensing unit.

[0008] In preferred embodiments of this disclosure, the optical sensing unit is a CMOS sensor.

[0009] In a preferred embodiment of the present disclosure, the optical sensing device includes an illumination unit arranged around the optical sensing unit.

[0010] In a preferred embodiment of the present disclosure, the optical sensing device comprises a first optical sensing unit located at an end and facing a first direction for receiving a first optical signal, and a second optical sensing unit located at an end and facing a second direction for receiving a second optical signal, wherein the first direction is not parallel to the second direction.

[0011] In a preferred embodiment of the present disclosure, the sheath device has a first fixing mechanism located at the control end of the sheath device, and the optical sensing device has a second fixing mechanism, wherein the optical sensing device is fixed to the end by connecting and fixing the second fixing mechanism to the first fixing mechanism, and the second fixing mechanism is detachably connected to and fixed to the first fixing mechanism.

[0012] In a preferred embodiment of the present disclosure, the sheath device has a fixed portion located at its end, and the optical sensing device is detachably fixed to the fixed portion.

[0013] In a preferred embodiment of this disclosure, the fixing part is a magnet.

[0014] In a preferred embodiment of the present disclosure, the sheath device has a groove arranged to extend on the inner wall surface of the sheath device, and the optical sensing unit is connected to the groove and movable along the groove.

[0015] In a preferred embodiment of this disclosure, the end is an open end, and a setback distance is provided between the optical sensing device and the open end.

[0016] In a preferred embodiment of the present disclosure, the medical endoscope system further comprises an electrocautery device fixed to the outer surface of the end.

[0017] In a preferred embodiment of the present disclosure, the medical endoscope system further comprises an electrocautery device movably arranged to extend within a sheath device, the electrocautery device having a fixing mechanism and an electrocautery section, the electrocautery device being detachably fixed to the end of the sheath device via the fixing mechanism, so that the electrocautery section is exposed to the outside of the sheath device.

[0018] In a preferred embodiment of the present disclosure, the medical endoscope system further comprises a shutter device movably disposed to extend within a sheath device, the shutter device having a shutter portion, and the shutter device closing an end opening through the shutter portion.

[0019] In a preferred embodiment of the present disclosure, the shutter portion is an inflatable element.

[0020] In a preferred embodiment of the present disclosure, the medical endoscope system further comprises a surgical device disposed within the sheath device.

[0021] The various aspects of the present disclosure described above, together with other aspects of the present disclosure, will become further apparent hereinafter based on the following detailed description of non-limiting embodiments and the accompanying drawings thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] [Figure 1A] It is a schematic diagram showing the configuration of a medical endoscope system according to an embodiment of the present disclosure.

[0023] [Figure 1B] It is a schematic diagram of a medical endoscope system according to an embodiment of the present disclosure.

[0024] [Figure 2] It is a schematic diagram of a medical endoscope system according to an embodiment of the present disclosure.

[0025] [Figure 3] It is a schematic diagram of a medical endoscope system according to an embodiment of the present disclosure.

[0026] [Figure 4A] It is a schematic diagram of a medical endoscope system according to an embodiment of the present disclosure.

[0027] [Figure 4B] It is a schematic diagram of a medical endoscope system according to an embodiment of the present disclosure.

[0028] [Figure 5A] It is a schematic diagram of a medical endoscope system according to an embodiment of the present disclosure.

[0029] [Figure 5B]This is a schematic diagram of a medical endoscope system according to one embodiment of the present disclosure.

[0030] [Figure 6] This is a schematic diagram of a medical endoscope system according to one embodiment of the present disclosure.

[0031] [Figure 7] This is a schematic diagram of a medical endoscope system according to one embodiment of the present disclosure.

[0032] [Figure 8A] This is a schematic diagram of a medical endoscope system according to one embodiment of the present disclosure.

[0033] [Figure 8B] This is a schematic diagram of a medical endoscope system according to one embodiment of the present disclosure. [Modes for carrying out the invention]

[0034] Figure 1A is a schematic diagram showing the configuration of a medical endoscope system according to one embodiment of the present disclosure. In the embodiment shown in Figure 1A, the medical endoscope system 100 comprises a sheath device 110 and an optical sensing device 120. The sheath device 110 has an end 112, and the optical sensing device 120 comprises a transmission unit 122 and an optical sensing unit 124. The optical sensing device 120 is arranged to extend within the sheath device 110 (the phrase "arranged to extend" means that the optical sensing device 120 extends within the sheath device 110 along the longitudinal direction of the sheath device 110, for example, the optical sensing unit 124 of the optical sensing device 120 may be located at the end 112 of the sheath device 110, while the transmission unit 122 of the optical sensing device 120 may extend along the interior of the sheath device 110 from the optical sensing unit 124 to the other end of the sheath device 110), and the optical sensing device 120 is fixed to the end 112. Therefore, a user (e.g., a medical professional) can simultaneously hold and operate the medical endoscope system 100 without having to hold or operate the sheath device 110 and the optical sensing device 120 with two separate hands, thereby significantly reducing the difficulty of operating the medical endoscope system 100. In one embodiment, another surgical device 130 (including, but not limited to, a medical clamping device or a medical cutting device) is placed inside the sheath device 110 to perform medical treatment (including, but not limited to, minor surgery) on a target lesion in the human body. In particular, the surgical device 130 may be connected to and / or fixed within the sheath device 110 as needed, or the surgical device 130 may be movably arranged inside the sheath device 110 as needed. Preferably, in the medical endoscope system 100, the optical sensing unit 124 of the optical sensing device 120 is fixed to the end 112 of the sheath device 110. The optical sensing device 120 can receive optical signals via the optical sensing unit 124 and transmit optical signals via the transmission unit 122. For example, when the end 112 of the sheath device 110 is placed on a target lesion inside the human body, the optical sensing unit 124 of the end 112 can receive (or detect) the optical signal from the target lesion and then transmit the optical signal to a display device outside the human body.As a result, the user can observe an image of the target lesion displayed on the display device. Preferably, the end 112 of the sheath device 110 can be a transparent tubular element. For example, the sheath device 110 is a transparent tubular device. This avoids the problem that the sheath device 110 may obstruct the view of the optical sensing unit 124. In one embodiment, the optical sensing unit 124 of the optical sensing device 120 is a CMOS (complementary metal-oxide-semiconductor) sensor. However, it should be understood that the optical sensing unit 124 of the optical sensing device 120 is not limited to a CMOS sensor and can be other types of sensors as needed. In one embodiment, the optical sensing device 120 has an illumination unit connected to the optical sensing unit 124 that can provide illumination to the view of the surgical field in front of the optical sensing unit 124. The illumination unit may be, for example, an LED (light-emitting diode) device. Preferably, the illumination unit is arranged around the optical sensing unit 124.

[0035] Referring to Figure 1B, a schematic diagram of a medical endoscope system according to one embodiment of the present disclosure is shown. In the embodiment shown in Figure 1B, the medical endoscope system 100B comprises a sheath device 110B and an optical sensing device 120B. The sheath device 110B has an end 112B, a control end 114B, and a first fixing mechanism 116B, the first fixing mechanism 116B being located at the control end 114B of the sheath device 110B. The optical sensing device 120B comprises a second fixing mechanism 128B, a transmission unit 122B, and an optical sensing unit (sometimes referred to as the "primary optical sensing unit") 124B. The second fixing mechanism 128B is connected to the transmission unit 122B, and the transmission unit 122B is connected to the optical sensing unit 124B. The optical sensing device 120B is positioned to extend within the sheath device 110B (the phrase "positioned to extend" means that the optical sensing device 120B extends within the sheath device 110B along the longitudinal direction of the sheath device 110B; for example, the optical sensing section 124B of the optical sensing device 120B may be positioned at the end 112B of the sheath device 110B, while the transmission section 122B of the optical sensing device 120B may extend from the optical sensing section 124B to the control end 114B of the sheath device 110B). Preferably, the optical sensing device 120B is fixed to the end 112B of the sheath device 110B by connecting and fixing the second fixing mechanism 128B of the optical sensing device 120B to the first fixing mechanism 116B. Therefore, a user (e.g., a medical professional) can simultaneously hold and operate the medical endoscope system 100B without having to hold or operate the sheath device 110B and the optical sensing device 120B with two separate hands, significantly reducing the difficulty of operating the medical endoscope system 100B.

[0036] It should be understood that the first fixing mechanism 116B and the second fixing mechanism 128B may include, but are not limited to, snap engagement mechanisms, engagement mechanisms, screw-in mechanisms, coupling mechanisms, or adhesive mechanisms as needed. Therefore, the second fixing mechanism 128B may be connected to and fixed to the first fixing mechanism 116B by snap engagement, engagement, screwing, restraint, adhesive, etc., as needed. Preferably, the second fixing mechanism 128B is detachably connected to and fixed to the first fixing mechanism 116B. Preferably, as described above, the fixing of the optical sensing device 120B to the end 112B of the sheath device 110B means that the optical sensing portion 124B of the optical sensing device 120B is fixed to the end 112B of the sheath device 110B. Preferably, the fixation of the optical sensing device 120B to the end 112B of the sheath device 110B means that the optical sensing device 120B (or the optical sensing portion 124B of the optical sensing device 120B) is fixed to the end 112B of the sheath device 110B, and the optical sensing device 120B (or the optical sensing portion 124B of the optical sensing device 120B) does not necessarily have to be directly connected to the end 112B of the sheath device 110B. Preferably, the outer part (or housing) of the transmission portion 122B is made of a rigid material. As a result, regardless of whether the optical sensing unit 124B is connected to the end 112B or not (for example, via a mechanism such as a magnet, to be more precise), if the second fixing mechanism 128B of the optical sensing device 120B is connected to and fixed to the first fixing mechanism 116B, the optical sensing unit 124B of the optical sensing device 120B remains driven by the transmission unit 122B and is therefore fixed to the end 112B of the sheath device 110B.

[0037] Referring to Figure 2, a schematic diagram of a medical endoscope system according to one embodiment of the present disclosure is shown. In the embodiment shown in Figure 2, the sheath device 210 of the medical endoscope system 200 has a groove 214, which is arranged to extend along the inner wall surface of the sheath device 210 (the phrase "arranged to extend" means that the groove 214 extends along the longitudinal direction of the sheath device 210 within the sheath device 210), and the optical sensing unit 224 is connected to the groove 214 and is movable (or slidable) along the groove 214. This allows the user to install the optical sensing unit of the medical endoscope system 200 into the sheath device 210 along the groove 214 as needed, or to remove the optical sensing unit from the sheath device 210 along the groove 214 as needed.

[0038] In one embodiment, the sheath device may have a fixing portion, which is located at the end of the sheath device, and the optical sensing device is detachably fixed to the fixing portion. For example, referring to Figure 3, a schematic diagram of a medical endoscope system according to one embodiment of the present disclosure is shown. In the embodiment shown in Figure 3, the sheath device 310 of the medical endoscope system 300 has a fixing portion 316, which is located on the inner wall surface of the end portion 312 of the sheath device 310. This allows the user to fix the optical sensing device of the medical endoscope system 300 to the end portion 312 as needed, or to detach it from the end portion 312 as needed. Preferably, the fixing portion 316 is a magnet, and the fixing portion 316 and the optical sensing portion 324 of the optical sensing device are detachably fixed by magnetic force, thereby fixing the optical sensing portion 324 of the optical sensing device to the end portion 312.

[0039] Referring to Figures 4A and 4B, a schematic diagram of a medical endoscope system according to one embodiment of the present disclosure is shown. In the embodiment shown in Figures 4A and 4B, the medical endoscope system 400 further comprises a shutter device 430, the shutter device 430 being movably arranged to extend within the sheath device 410 (the phrase "arranged to extend" means that the shutter device 430 extends within the sheath device 410 along its longitudinal direction). The user may, if necessary, install the shutter device 430 within the sheath device 410 along its longitudinal direction, or remove the shutter device 430 from the sheath device 410 along its longitudinal direction. The shutter device 430 has a shutter portion 432, which the user may, with the medical endoscope system 400 in place in the patient's body, close the opening 418 of the sheath device 410 (the opening 418 is located at the end 412 of the sheath device 410) via the shutter portion 432. This prevents damage to human tissue by the opening 418 of the sheath device 410. Preferably, the volume of the shutter portion 432 can be controlled by the user. In this way, the volume of the shutter portion 432 can be reduced before moving the shutter device 430 along the sheath device 410, which helps to avoid moving the optical sensing device (particularly the optical sensing portion 424 of the optical sensing device) to the wrong position or damaging the optical sensing portion 424 during the movement of the shutter portion 432. In one embodiment, the shutter portion 432 is an inflatable element, and the user can inflate the shutter portion 432 to increase its volume as needed (see Figure 4A) or deflate the shutter portion 432 to decrease its volume as needed (see Figure 4B). Preferably, the shutter portion 432 can be configured to have a specific shape (for example, the shutter portion 432 may have a notch 434 so that the notch 434 does not come into contact with the optical sensing portion 424 when the shutter portion 432 expands), thereby ensuring that the shutter portion 432 does not press against the optical sensing device (particularly the optical sensing portion 424 of the optical sensing device) when it expands. In one embodiment, in order to simplify the operation process of the shutter device or to reduce the manufacturing cost of the shutter device, the shutter portion of the shutter device may have a fixed shape and may be made of a plastic material, for example, but is not limited thereto. In one embodiment, since the optical sensing device and the sheath device can be separated from each other as needed (i.e., the optical sensing device is detachably fixed to the sheath device), the shutter portion may not have a notch. When using the shutter device, the user does not need to attach the optical sensing device to the sheath device, so the shutter device does not come into contact with or press against the optical sensing device.

[0040] Referring to Figures 5A and 5B, schematic diagrams of a medical endoscope system according to one embodiment of the present disclosure are shown. In the embodiment shown in Figures 5A and 5B, the medical endoscope system 500 further comprises an electrocautery device 540. The electrocautery device 540 is movably positioned to extend within the sheath device 510 (the phrase "positioned to extend" means that the electrocautery device 540 extends within the sheath device 510 along its longitudinal direction). The user may, if necessary, install the electrocautery device 540 within the sheath device 510 along its longitudinal direction, or remove the electrocautery device 540 from the sheath device 510 along its longitudinal direction. The electrocautery device 540 has a fixing mechanism 542 and an electrocautery section 544. The electrocautery device 540 is detachably fixed to the end 512 of the sheath device 510 via a fixing mechanism 542, and the electrocautery section 544 is exposed to the outside of the sheath device 510. This allows the user to perform electrocautery on target tissue using the electrocautery section 544 of the electrocautery device 540 (for example, the electrocautery device can be applied to a target blood vessel or tissue to stop bleeding). In the embodiments shown in Figures 5A and 5B, the fixing mechanism 542 is a hook-shaped mechanism, and the user can hook and fix the fixing mechanism 542 to the opening of the sheath device 510, exposing the electrocautery section 544 to the outside of the sheath device 510. However, it should be understood that the fixing mechanism is not limited to a hook-shaped mechanism, and the fixing mechanism may be of other shapes as long as it can provide a fixing function. Referring to Figure 6, a schematic diagram of a medical endoscope system according to one embodiment of the present disclosure is shown. In the embodiment shown in Figure 6, the medical endoscope system 600 further comprises an electrocautery device 640, which is fixed to the outer surface of the end 612 of the sheath device 610. The user can use the electrocautery device 640 to perform electrocautery on target tissue (for example, an electrocautery device can be applied to a target blood vessel or tissue to stop bleeding). Preferably, the electrocautery device 640 is an electrode that enables electrocautery via a powered circuit 642.If the electrocautery device 640 is composed of electrodes, the number of electrodes depends on the user's needs. For example, the electrocautery device 640 may consist of one electrode, two electrodes (dual electrodes), or three electrodes, but should be understood to be not limited to these.

[0041] Referring to Figure 7, a schematic diagram of a medical endoscope system according to one embodiment of the present disclosure is shown. In the embodiment shown in Figure 7, the medical endoscope system 700 further comprises a liquid passage section 750 arranged to extend within a sheath device 710 ("arranged to extend" means that the liquid passage section 750 extends along the longitudinal direction of the sheath device 710 within the sheath device 710), and the liquid passage section 750 has a passage opening 752. The passage opening 752 of the liquid passage section 750 is located at the end of the sheath device 710, and the user can control the medical endoscope system 700 so that liquid (e.g., water) flows out from the end of the sheath device 710 along the liquid passage section 750 to clean target tissue or wash away foreign matter. In one embodiment, the passage opening 752 is located in close proximity to the optical sensing sections 723, 724 of an optical sensing device 720. Therefore, the user can control the medical endoscope system 700 so that a liquid (e.g., water) flows along the liquid passage section 750 to the optical sensing sections 723 and 724 of the optical sensing device 720 to clean the target tissue.

[0042] Referring to Figure 8A, a schematic diagram of a medical endoscope system according to one embodiment of the present disclosure is shown. In the embodiment shown in Figure 8A, the optical sensing unit (sometimes referred to as the "primary optical sensing unit") 820 of the optical sensing device has a first optical sensing unit 823 and a second optical sensing unit 825. The first optical sensing unit 823 is located at the end 812 of the sheath device 810 and faces a first direction 910 to receive a first optical signal. The second optical sensing unit 825 is located at the end 812 of the sheath device 810 and faces a second direction 920 to receive a second optical signal. The first direction 910 is not parallel to the second direction 920, and therefore the field of view of the first optical sensing unit 823 and the field of view of the second optical sensing unit 825 do not overlap and gradually diverge. In this way, image data from various angles can be obtained, so that images of a wider variety of fields of view can be generated. In one embodiment, the end 812 of the sheath device 810 includes an open end 813, and there is a setback distance 930 between the optical sensing units 823, 825 and the open end 813. Depending on various needs, there may be no setback distance between the optical sensing units 823, 825 and the open end 813. Instead, the optical sensing units 823, 825 may be positioned on the open end 813, or they may be positioned to protrude slightly from the open end 813.

[0043] Referring to Figure 8B, a schematic diagram of a medical endoscope system according to one embodiment of the present disclosure is shown. In the embodiment shown in Figure 8B, the optical sensing unit (sometimes referred to as the "primary optical sensing unit") 820B of the optical sensing device has a first optical sensing unit 823B and a second optical sensing unit 825B. The first optical sensing unit 823B is located at the end 812B of the sheath device 810B and faces a first direction 910B to receive a first optical signal. The second optical sensing unit 825B is located at the end 812B of the sheath device 810B and faces a second direction 920B to receive a second optical signal. The first direction 910B is not parallel to the second direction 920B, and the fields of view of the first optical sensing unit 823B and the fields of view of the second optical sensing unit 825B overlap with each other. This allows image data from various angles to be obtained. In one embodiment, a three-dimensional image is obtained via a first optical sensing unit 823B and a second optical sensing unit 825B. In one embodiment, the end 812B of the sheath device 810B includes an open end 813B, and there is a setback distance between the optical sensing units 823B, 825B and the open end 831B. Depending on various needs, there may be no setback distance between the optical sensing units 823B, 825B and the open end 813B. Instead, the optical sensing units 823B, 825B may be positioned on the open end 813B, or they may be positioned to protrude slightly from the open end 813B.

[0044] The medical endoscope system of this disclosure has been described above and illustrated in the drawings. It should be understood that the embodiments of this disclosure are essentially illustrative. Various modifications can be made to the embodiments of this disclosure without departing from the spirit and scope of the claims of this disclosure, and such modifications will be encompassed by the claims of this disclosure. Therefore, the embodiments of this disclosure are not intended to narrow the scope of this disclosure, and the actual scope and spirit of this disclosure are disclosed in the appended claims.

Claims

1. A sheath device having an end, The device comprises an optical sensing device that extends within the sheath device and is fixed to the end, The optical sensing device has a transmission unit, and transmits the optical signals received by the optical sensing device via the transmission unit. Medical endoscopy system.

2. The end of the sheath device is a transparent tubular element. The medical endoscope system according to claim 1.

3. The liquid passage portion extending within the aforementioned sheath device and having a passage opening is further provided, The passage opening of the liquid passage portion is located at the end of the sheath device, and the medical endoscope system allows liquid to flow out from the end along the liquid passage portion. The medical endoscope system according to claim 1.

4. The optical sensing device has an optical sensing section, and the medical endoscope system makes it possible to flow the liquid to the end and bring it into contact with the optical sensing section. The medical endoscope system according to claim 3.

5. The aforementioned optical sensing unit is a CMOS sensor. The medical endoscope system according to claim 4.

6. The optical sensing device has an illumination unit arranged around the optical sensing unit. The medical endoscope system according to claim 5.

7. The aforementioned optical sensing device, A first optical sensing unit is positioned at the end and faces a first direction to receive a first optical signal, It comprises a second optical sensing unit positioned at the end and facing a second direction for receiving a second optical signal, The first direction is not parallel to the second direction. The medical endoscope system according to claim 1.

8. The sheath device has a first fixing mechanism located at the control end of the sheath device, The optical sensing device has a second fixing mechanism, and by connecting and fixing the second fixing mechanism to the first fixing mechanism, the optical sensing device is fixed to the end. The second fixing mechanism is detachably connected to and fixed to the first fixing mechanism. The medical endoscope system according to claim 1.

9. The sheath device has a fixing portion located at the end, and the optical sensing device is detachably fixed to the fixing portion. The medical endoscope system according to claim 1.

10. The aforementioned fixing part is a magnet. The medical endoscope system according to claim 9.

11. The sheath device has a groove that extends on the inner wall surface of the sheath device, and the optical sensing unit is connected to the groove and movable along the groove. The medical endoscope system according to claim 1.

12. The end includes an open end, and a setback distance is provided between the optical sensing device and the open end. The medical endoscope system according to claim 1.

13. The device further comprises an electrocautery device fixed to the outer surface of the end portion. The medical endoscope system according to claim 1.

14. The device further comprises an electrocautery device movably arranged to extend within the sheath device, The electrocautery device comprises a fixing mechanism and an electrocautery section, and the electrocautery device is detachably fixed to the end of the sheath device via the fixing mechanism such that the electrocautery section is exposed to the outside of the sheath device. The medical endoscope system according to claim 1.

15. The device further comprises a shutter device that is movably arranged to extend within the sheath device, The shutter device has a shutter portion, and the shutter device closes the opening at the end via the shutter portion. The medical endoscope system according to claim 1.

16. The shutter portion is an expandable element. The medical endoscope system according to claim 15.

17. The device further comprises surgical instruments arranged within the sheath device. The medical endoscope system according to claim 1.

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