Endoscope

Abstract

The present invention relates to an endoscope comprising: an insertion unit having an illumination and imaging unit and an insertion tube; an operation unit which is detachably coupled to the insertion unit and which bends the insertion tube in response to an operation knob and an operation of the operation knob, wherein the operation unit includes a power transmission unit rotating in conjunction with the operation knob and a driving gear rotating in conjunction with the power transmission unit, and thus the operation unit and the insertion unit can be readily attached / detached and operational force can be transmitted.

Description

endoscopy

[0001] The present invention relates to an endoscope, and more particularly, to an endoscope in which an insertion part and an operating part are detachably provided so that a disposable insertion part can be replaced and used.

[0002]

[0003] A medical endoscope is a device that is inserted directly into the internal tissue of the human body to check the condition of the affected area or perform a procedure.

[0004] A typical endoscope features a flexible insertion tube with an articulating assembly at the end, allowing for control of the insertion direction during insertion into the body. A distal end body equipped with an image sensor and a light source is provided at the end of the articulating assembly. A handle body may be provided at the other end of the insertion tube. The handle body is connected to an image processing device (not shown) via a separate cable and connector.

[0005] The handle body has dials and buttons used to adjust the direction of the joint assembly and for operation.

[0006] A pair of dials are arranged to adjust the direction of movement of the distal end body in the longitudinal direction of the insertion tube, up and down and left and right. A sprocket and a chain are provided inside the handle body to convert the rotational motion of the dial into linear motion. The chain is connected to the end of the joint assembly via a separate wire. Consequently, the rotation of the dial is converted into linear motion of the wire through the sprocket and chain, and the joint assembly bends according to the linear motion of the wire. Thus, the operator of the endoscope can control the direction of movement of the distal end body during the process of inserting the insertion tube into the human body.

[0007] Because endoscopes are inserted into the human body, thorough hygiene management is essential, and they must be cleaned and disinfected before and after each examination or surgery. In some cases, reusing the parts that are actually inserted into the body, such as the insertion tube and joint assembly, may be impossible or undesirable. In this case, conventional endoscopes, which are constructed as a single unit, require the entire endoscope device to be replaced, creating the problem of requiring replacement. Furthermore, even if reuse is possible, cleaning and disinfection procedures can be performed more easily if only parts, rather than the entire endoscope, can be removed.

[0008] In this regard, Korean Patent Publication No. 10-2014-0063947 discloses an endoscope in which the handle body and the operating unit body are configured to be detachable. However, due to the operating structure of the endoscope, it is difficult to easily detach and reattach the wire, so other parts are detachable while leaving the wire in place, resulting in low utility.

[0009] Even if the problem of wire attachment and detachment is solved, there is a problem that it is difficult to precisely operate the endoscope because the distances that the pair of wires move are different due to the difference in radius when the endoscope is bent.

[0010] Furthermore, Korean Patent No. 2110353B1 discloses an endoscope that attaches and detaches a control unit and an insertion unit by interconnecting wires. However, the structure connects multiple wires to each of the control unit and the insertion unit, which can lead to errors in the lengths of the wires, making precise bending difficult during operation.

[0011]

[0012] The present invention was created to improve the problems of conventional endoscopes as described above, and its purpose is to provide an endoscope in which an operator can easily attach and detach an insertion portion and an operating portion.

[0013] In addition, the purpose is to provide an endoscope in which the operating force from the operating part can be accurately transmitted to the insertion part.

[0014]

[0015] In order to achieve the above-described purpose, the endoscope according to the present invention includes an insertion unit having an illumination photographing unit and an insertion tube; and an operation unit detachably coupled to the insertion unit and bending the insertion tube according to an operation knob and an operation of the operation knob; wherein the operation unit may include a power transmission unit that rotates in conjunction with the operation knob; and a driving gear that rotates in conjunction with the power transmission unit.

[0016] At this time, the insertion part may include a driven gear that meshes with the driving gear.

[0017] In addition, the insertion portion may further include a wire that moves according to the rotation of the driven gear and bends the insertion tube.

[0018] Meanwhile, the power transmission unit may include a driving sprocket that rotates in conjunction with the rotation of the operating knob; and a driven sprocket to which an operating chain is connected and that rotates in conjunction with the driving sprocket.

[0019] Meanwhile, the operation knob may include a first knob that is rotatably provided; and a second operation knob that is positioned lower than the first knob; and the power transmission unit may include a first power transmission unit that is rotated in conjunction with the first knob; and a second power transmission unit that is positioned higher than the first power transmission unit and is rotated in conjunction with the second operation knob.

[0020] Meanwhile, the driving gear may include a first driving gear that rotates in conjunction with the first power transmission unit; and a second driving gear that is positioned above the first driving gear and rotates in conjunction with the second power transmission unit.

[0021] Meanwhile, the insertion part may further include a wire reel that rotates in conjunction with the driven gear and to which a wire is coupled.

[0022] Meanwhile, the operating unit may include a first knob shaft connecting the first knob and the first power transmission unit; and a second knob shaft that is provided to be rotatable relative to the first knob shaft and connects the second operating knob and the second power transmission unit.

[0023] Meanwhile, the operating unit may further include a connecting shaft connecting the first power transmission unit and the first driving gear.

[0024] At this time, the second power transmission unit can be spline-coupled with the second driving gear.

[0025] Meanwhile, the driven gear may include a first driven gear; and a second driven gear disposed above the first driven gear.

[0026] At this time, the wire reel may include a first wire reel that rotates in conjunction with the first driven gear; and a second wire reel that is positioned lower than the first wire reel and rotates in conjunction with the second driven gear.

[0027] At this time, the second driven gear and the second wire reel can be formed integrally.

[0028] At this time, the wire reel may include a reel body; and a wire coupling portion formed to extend radially outward from the outer surface of the reel body and to which the wire is fixedly coupled.

[0029] At this time, the insertion part may include a connecting part; and a hook that extends from the end of the connecting part housing in the direction of the operating part and is detachably connected to the operating part.

[0030]

[0031] As described above, the endoscope according to the present invention has a driving gear provided in the operating portion and a driven gear provided in the insertion portion, so that the operating portion and the insertion portion can be easily attached and detached while transmitting the operating force, which is effective.

[0032] In addition, the knob is connected to the driving sprocket, the driving sprocket and the driven sprocket are connected by an operating chain, and the driven sprocket is connected to the driving gear, so that the operating force can be effectively transmitted.

[0033]

[0034] FIG. 1 is a perspective view illustrating an endoscope according to one embodiment of the present invention.

[0035] FIG. 2 is a perspective view of an operating unit in an endoscope according to one embodiment of the present invention.

[0036] Figure 3 is a cross-sectional view of Figure 2.

[0037] Figure 4 is a perspective view for explaining the internal structure of an operating unit according to one embodiment of the present invention.

[0038] FIG. 5 is an exploded perspective view illustrating a knob and a drive sprocket in an endoscope according to one embodiment of the present invention.

[0039] FIG. 6 is an exploded perspective view illustrating a driven sprocket and a driving gear in an endoscope according to one embodiment of the present invention.

[0040] Figure 7 is a perspective view of an insertion portion in an endoscope according to one embodiment of the present invention.

[0041] Fig. 8 is a cross-sectional view of Fig. 7.

[0042] FIG. 9 is an exploded perspective view illustrating a manual gear and wire reel in an endoscope according to one embodiment of the present invention.

[0043] FIG. 10 is a plan view illustrating the connection of a wire reel and a wire in an insertion portion according to one embodiment of the present invention.

[0044] Figure 11 is an exploded perspective view illustrating the internal structure of an insertion portion in an endoscope according to one embodiment of the present invention.

[0045] Fig. 12 is a perspective view for explaining a lighting photographing unit in an insertion unit according to one embodiment of the present invention.

[0046] FIG. 13 is a drawing for explaining an insertion tube in an endoscope according to one embodiment of the present invention.

[0047] FIG. 14 is a drawing for explaining a first bending member in an endoscope according to one embodiment of the present invention.

[0048] FIG. 15 is a drawing for explaining a second bending member in an endoscope according to one embodiment of the present invention.

[0049]

[0050] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0051] The present invention is susceptible to various modifications and embodiments. Specific embodiments are illustrated in the drawings and described in detail in the detailed description. This is not intended to limit the invention to specific embodiments, but rather to encompass all modifications, equivalents, and alternatives falling within the spirit and technical scope of the present invention.

[0052] When describing the present invention, terms such as "first" and "second" may be used to describe various components. However, these components may not be limited by these terms. These terms are used solely to distinguish one component from another. For example, without departing from the scope of the present invention, the first component could be referred to as the "second component," and similarly, the second component could also be referred to as the "first component."

[0053] The term "and / or" may include any combination of multiple related listed items or any one of multiple related listed items.

[0054] When a component is referred to as being "connected" or "connected" to another component, it can be understood that it is directly connected or connected to that other component, but that there may be other components in between. Conversely, when a component is referred to as being "directly connected" or "connected" to another component, it can be understood that there are no other components in between.

[0055] The terminology used in this application is solely for the purpose of describing specific embodiments and is not intended to limit the present invention. Singular expressions may include plural expressions, unless the context clearly dictates otherwise.

[0056] In this application, terms such as “include” or “have” are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, and can be understood as not excluding in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0057] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms defined in commonly used dictionaries, for example, may be interpreted to have a meaning consistent with their meaning in the context of the relevant technology, and, unless explicitly defined herein, may not be interpreted in an idealized or overly formal sense.

[0058] In addition, the following examples are provided to more completely explain to a person having average knowledge in the art, and the shapes and sizes of elements in the drawings may be exaggerated for clearer explanation.

[0059]

[0060] FIG. 1 is a perspective view illustrating an endoscope according to an embodiment of the present invention, FIG. 2 is a perspective view illustrating an operating unit in an endoscope according to an embodiment of the present invention, FIG. 3 is a cross-sectional view of FIG. 2, FIG. 4 is a perspective view illustrating an internal structure of an operating unit according to an embodiment of the present invention, FIG. 5 is an exploded perspective view illustrating a knob and a driving sprocket in an endoscope according to an embodiment of the present invention, and FIG. 6 is an exploded perspective view illustrating a driven sprocket and a driving gear in an endoscope according to an embodiment of the present invention.

[0061] Referring to FIGS. 1 to 6, an endoscope (1) according to one embodiment of the present invention may be a disposable endoscope. Specifically, the endoscope (1) according to one embodiment of the present invention includes an operating unit (100) and an insertion unit (200). At this time, the operating unit (100) and the insertion unit (200) may be detachably coupled to each other.

[0062]

[0063] The operating unit (100) is provided so that the operator can operate it. The operating unit (100) can be provided so that the operator can hold and operate it. The operating unit (100) can bend the insertion unit (200) through the operator's operation.

[0064] The insertion part (200) is provided so that it can be inserted into the human body by manipulation of the operating part (100) and photograph the inside of the human body. The insertion part (200) can be inserted into the human body, and is provided so as to be bendable according to manipulation of the operating part (100) so that it can move along the internal structure of the human body, and can irradiate light into the inside of the human body and photograph it.

[0065]

[0066] An endoscope (1) according to one embodiment of the present invention may further include a connector adapter and a universal code.

[0067] Specifically, the endoscope (1) includes a connector adapter for connection to an external device, and the connector adapter can be connected to an operating unit (100) via a universal cord. The external device connected to the connector adapter may be an image processing device. Through this, an image captured by the insertion unit (200) can be displayed on the external image processing device. Through this, the operator can operate the operating unit (100) while viewing the image captured by the insertion unit (200) on the image processing device.

[0068]

[0069] The operating unit (100) includes an operating unit housing (110), an operating knob (120), a power transmission unit, and an operating unit plate.

[0070]

[0071] The operating unit housing (110) can accommodate a power transmission unit for driving the insertion unit (200) inside while providing a structure for the operator to grasp.

[0072] At this time, the power transmission unit can rotate in conjunction with the operating knob (120) to transmit the rotational power of the operating knob (120). Various types of power transmission means can be applied to the power transmission unit. For example, the power transmission unit can include a plurality of sprockets and a chain. As another example, the power transmission unit can include a plurality of timing gears and a timing belt. As yet another example, the power transmission unit can have a plurality of gears meshed with each other.

[0073] Below, we will explain the structure consisting of sprockets and chains.

[0074] A power transmission unit (130, 140, 150) according to one embodiment of the present invention may include a driving sprocket (130), a driven sprocket (140), and an operating chain (150).

[0075] Meanwhile, an operation knob (120) is arranged on the upper part of the operation unit housing (110), and inside the operation unit housing (110), a driving sprocket (130) that is linked to the rotation of the operation knob (120), a driven sprocket (140) that is linked to the driving sprocket (130) and rotates, and an operation chain (150) that connects the driving sprocket (130) and the driven sprocket (140) are accommodated, and channels and the like can be further accommodated.

[0076] For example, the operating unit housing (110) may be formed in a hollow cylinder shape. At this time, an operating knob (120) may be arranged on one longitudinal side of the operating unit housing (110), and the other longitudinal side may be detachably coupled with an insertion part (200). In addition, a driving sprocket (130) may be arranged on one longitudinal side of the interior of the operating unit housing (110), and a driven sprocket (140) may be arranged on the other longitudinal side. In addition, an operating chain (150) may be arranged along the longitudinal direction inside the operating unit housing (110).

[0077]

[0078] The operating knob (120) can control the insertion part (200) by rotating according to the user's operation. When the operating knob (120) is rotated according to the user's operation, the sprocket (130, 140) can be rotated in conjunction with the rotation of the operating knob (120).

[0079] The operating knob (120) may be configured to include two or more knobs. For example, the operating knob (120) may be provided in a form in which a first knob (121) and a second knob (122) are stacked in the vertical direction. The first knob (121) and the second knob (122) are respectively connected to a first driving sprocket (131) and a second driving sprocket (132) to be described later, and are configured to rotate independently of each other. The first knob (121) and the second knob (122) have a form in which multiple teeth protrude so that the operator can easily grip and rotate them.

[0080] Meanwhile, the first knob (121) can rotate independently while the second knob (122) remains stationary. Similarly, the second knob (122) can rotate independently while the first knob (121) remains stationary. The first knob (111) controls the up and down movement of the lighting photographing unit (210). That is, when the first knob (121) is turned clockwise or counterclockwise, the end of the lighting photographing unit (210) bends upward or downward accordingly. The second knob (122) controls the left and right movement of the lighting photographing unit (210). That is, when the second knob (122) is turned clockwise or counterclockwise, the end of the lighting photographing unit (210) bends to the left or right accordingly.

[0081] Meanwhile, in another embodiment, the first knob (121) can control the left and right movement of the lighting photographing unit (210), and the second knob (122) can control the up and down movement.

[0082] In this way, the rotation direction of the lighting photographing unit (210) can be arbitrarily adjusted by operating the first knob (121) and the second knob (122). Depending on the embodiment, it may be necessary to fix the lighting photographing unit (210) in a state where it is bent at a specific angle, and for this purpose, a fixing knob (123) is provided on the upper side of the second knob (122). When the fixing knob (123) is rotated, the first driving sprocket (131) and the second driving sprocket (132) are fixed so as not to rotate, and accordingly, the end of the lighting photographing unit (210) can also be maintained in a fixed state.

[0083] A first drive sprocket (131) and a second drive sprocket (132) are mounted on the lower portions of the first knob (121) and the second knob (122) so as to be rotatable in conjunction with the rotation of the first knob (121) and the second knob (122), respectively. In addition, an operating chain (150) that moves in conjunction with each of the driving sprockets (130) is provided. The operating chains (150) are responsible for the up-and-down movement and left-right movement of the lighting and photography unit (210), respectively, and these can move independently of each other.

[0084] Specifically, a first knob shaft (126) is coupled to the inside of the first knob (121), so that the first knob (121) and the first knob shaft (126) can rotate together. In addition, a second knob shaft (127) is coupled to the inside of the second knob (122), so that the second knob (122) and the second knob shaft (127) can rotate together. At this time, the first knob shaft (126) can be coupled to the first drive sprocket (131). And, the second knob shaft (127) can be coupled to the second drive sprocket (132).

[0085] For example, the first knob shaft (126) may include a disc-shaped knob coupling portion (126a) coupled with the inside of the first knob (121) and a shaft portion (126b) coupled with the first drive sprocket (131). In addition, the second knob shaft (127) may include a disc-shaped knob coupling portion (127a) coupled with the inside of the second knob (122) and a shaft portion (127b) coupled with the second drive sprocket (132). At this time, the shaft portion (126b) of the first knob shaft (126) may be formed to have a longer axial length than the shaft portion (127b) of the second knob shaft (127), and the shaft portion (126b) of the first knob shaft (126) may be formed to have a smaller diameter than the shaft portion (127b) of the second knob shaft (127). Accordingly, the shaft of the first knob shaft (126) can pass through the inside of the shaft of the second knob shaft (127). And, the first knob shaft (126) and the second knob shaft (127) can rotate relative to each other.

[0086] Meanwhile, when the operating unit housing (110) is placed closer to the ground than the operating knob (120), the first knob (121) may be positioned higher than the second knob (122). In addition, the fixed knob (123) may be positioned higher than the first knob (121).

[0087] Meanwhile, the power transmission unit (130, 140, 150) may include a first power transmission unit (131, 141, 151) and a second power transmission unit (132, 142, 152). At this time, the second power transmission unit (132, 142, 152) may be positioned higher than the first power transmission unit (131, 141, 151). Specifically, the second driving sprocket (132) may be positioned higher than the first driving sprocket (131). That is, the second knob (122) and the second driving sprocket (132) may be positioned between the first knob (121) and the first driving sprocket (131).

[0088] The operating chain (150) can connect the driving sprocket (130) and the driven sprocket (140). The operating chain (150) can transmit the rotational power of the driving sprocket (130) to the driven sprocket (140). When the driving sprocket (130) rotates through the operating chain (150), the driven sprocket (140) can rotate in conjunction therewith.

[0089] The operating chain (150) may include a first operating chain (151) and a second operating chain (152). The first operating chain (151) may connect a first driving sprocket (131) and a second driven sprocket (141). The second operating chain (152) may connect a second driving sprocket (132) and a second driven sprocket (142).

[0090] At this time, the second driven sprocket (142) may be placed above the first driven sprocket (141).

[0091] Therefore, when the first knob (121) is rotated by the user's operation, the first driving sprocket (131) and the first driven sprocket (141) can rotate in conjunction with each other. In addition, when the second knob (122) is rotated by the user's operation, the second driving sprocket (132) and the second driven sprocket (142) can rotate in conjunction with each other.

[0092] Meanwhile, the operating unit (100) may include an operating unit plate (160). The operating unit plate (160) may partition the interior of the operating unit housing (110) into upper and lower sections. For example, the operating unit plate (160) may be formed in a flat plate shape and placed within the operating unit housing (110). At this time, the driving sprocket (130), the driven sprocket (140), and the operating chain (150) may be placed above the operating unit housing (110). In addition, the driving gear (170) and the channel (180) may be placed below the operating unit housing (110).

[0093]

[0094] The driving gear (170) can rotate in conjunction with the rotation of the sprockets (130, 140). Specifically, the driving gear (170) can receive driving force from the driven sprocket (140). At this time, the first driven sprocket (141) can be coupled with the first driving gear (171).

[0095] Specifically, the first driven sprocket (141) may be spline-coupled with the first drive gear (171). Alternatively, the first driven sprocket (141) may be key-coupled with the first drive gear (171). For example, the first driven sprocket (141) may include a sprocket portion (141a) coupled with the operating chain (150) and a coupling shaft portion (141b) that extends axially downward from the sprocket portion and is coupled with the first drive gear (171). At this time, a key portion that is spline-coupled with the first drive gear (171) may be formed on the outer circumferential surface of the coupling shaft portion (141b). Accordingly, when the first driven sprocket (141) rotates, the first drive gear (171) may also rotate in conjunction.

[0096] Meanwhile, the second driven sprocket (142) may be spline-coupled with the second driving gear (172). Alternatively, the second driven sprocket (142) may be key-coupled with the second driving gear (172). For example, the second driven sprocket (142) may include a sprocket portion (142a) coupled with the operating chain (150) and a shaft coupling hole (142b) formed at the radial center of the sprocket portion. At this time, the shaft coupling hole (142b) may be formed as a hole having a non-circular shape so as to be key-coupled with the connecting shaft (173). In addition, the second driving gear (172) may include a gear portion (172a) on which gear teeth are formed and a shaft coupling hole (172b) formed at the radial center of the gear portion (172a). Accordingly, the second driven sprocket (142) can be connected to the second driving gear (171) through the connecting shaft (173). Therefore, when the second driven sprocket (142) rotates, the second driving gear (172) can also rotate in conjunction.

[0097] Meanwhile, the first driving gear (171) may be positioned above the second driving gear (172). Accordingly, the first driven sprocket (141) and the first driving gear (171) may be positioned between the second driven sprocket (142) and the second driving gear (172).

[0098] The driving gear (170) may further include a connecting shaft (173). The connecting shaft (173) may be coupled on both axial sides with the second driven sprocket (142) and the second driving gear (172). The connecting shaft (173) may pass through the first driven sprocket (141) and the first driving gear (171). At this time, the connecting shaft (173) may be rotated relative to the first driven sprocket (141) and the first driving gear (171).

[0099] For example, the connecting shaft (173) may be formed in a cylindrical shape, but may be formed in a shape in which both axial ends are partially cut off. Accordingly, the connecting shaft (173) can transmit the rotational power of the second driven sprocket (142) to the second driving gear (172).

[0100] Meanwhile, the driving gear (170) may further include a bearing (174). The bearing (174) may be arranged between the first driven sprocket (141) and the first driving gear (171). The bearing (174) may be coupled to the operating plate (160). The coupling shaft portion of the first driven sprocket (141) may pass through the bearing (174).

[0101]

[0102] Meanwhile, the operating unit (100) may be provided with a channel (180) for supplying air and water to the affected area during the procedure. For example, the channel (180) may be a supply channel and a suction channel. In this case, the supply channel may be an air supply channel and / or a water supply channel. The air supply channel, the water supply channel, and the suction channel have a roughly cylindrical shape and are hollow inside, so that when combined with the lighting and photographing unit (210), they are inserted into the interior of the lighting and photographing unit (210) so that water or air, etc. can be stably supplied to the treatment or examination area without leakage.

[0103] The connection terminal may be provided to be electrically connected to the lighting camera unit (210) so that data obtained by a camera, etc., provided at the end of the lighting camera unit (210) can be transmitted to an external device. For example, the connection terminal may be an HDMI terminal for transmitting audio and video.

[0104] The above channel (180) and connection terminal may be positioned lower than the operation chain (150). For example, the channel (180) and connection terminal may be accommodated within the operation unit housing (110), but may be positioned further from the operation knob (120) than the operation chain (150).

[0105] At this time, the area where the operation chain (150) moves and the area where the channel (180) and connection terminal are arranged can be distinguished by the operation unit plate (160). The channel (180) of the operation unit (100) can be connected to the channel (not shown) of the insertion unit (200).

[0106] The operating unit (100) includes a coupling unit (190). The coupling unit (190) can be detachably coupled with the connecting unit (250) of the insertion unit (200). The coupling unit (190) can be coupled with the hook (251a) of the connecting unit (250). Specifically, the coupling unit (190) is formed on the outer surface of the operating unit housing (110), and the hook of the connecting unit (250) can be accommodated therein. For example, the coupling unit (190) may have a guide groove (191) formed along the outer surface of the operating unit housing (110) so that the hook (251a) can be slidably inserted, and a catch (192) formed outside the guide groove to support the hook (251a).

[0107] Meanwhile, a guide pin (193) that guides the position of the connection with the connecting portion (250) may be provided to protrude from the longitudinal end face of the coupling portion (190). Through this, the user can accurately couple the operating portion (100) and the insertion portion (200).

[0108] Meanwhile, a gear hole (194) may be formed on the longitudinal end surface of the connecting portion (190). The gear hole (194) may be arranged so that at least a portion of the driving gear (170) passes through it. At this time, when the operating portion (100) is separated from the insertion portion (200), at least a portion of the driving gear (170) may be exposed to the outside.

[0109] In addition, a channel connecting portion (195) may be provided on the longitudinal end face of the coupling portion (190). The channel connecting portion (195) may be arranged at the longitudinal end of the channel (180). Through this, when the operating portion (100) and the insertion portion (200) are coupled, the channel (180) can be connected to the channel (not shown) of the insertion portion (200).

[0110] Additionally, a connector (196) capable of connecting a connection terminal may be provided on the longitudinal end face of the joint (190). The connector (196) may be provided so that the connection terminal is connected.

[0111]

[0112] Meanwhile, FIG. 7 is a perspective view illustrating an insertion portion in an endoscope according to an embodiment of the present invention, FIG. 8 is a cross-sectional view of FIG. 7, FIG. 9 is an exploded perspective view illustrating a manual gear and a wire reel in an endoscope according to an embodiment of the present invention, FIG. 10 is a plan view illustrating a connection between a wire reel and a wire in an insertion portion according to an embodiment of the present invention, FIG. 11 is an exploded perspective view illustrating an internal structure of an insertion portion in an endoscope according to an embodiment of the present invention, FIG. 12 is a perspective view illustrating an illumination photographing portion in an insertion portion according to an embodiment of the present invention, FIG. 13 is a drawing illustrating an insertion tube in an endoscope according to an embodiment of the present invention, FIG. 14 is a drawing illustrating a first bending member in an endoscope according to an embodiment of the present invention, and FIG. 15 is a drawing illustrating a second bending member in an endoscope according to an embodiment of the present invention.

[0113] Referring to FIGS. 7 to 15, the insertion portion (200) of an endoscope according to one embodiment of the present invention will be described as follows.

[0114] The insertion part (200) is detachably connected to the operation part (100), and at least a portion of it is inserted into the human body to enable photographing the inside of the human body.

[0115] The insertion part (200) includes a lighting photographing part (210), an insertion tube (220), a wire (230), and a connecting part (250). At this time, the lighting photographing part (210) is arranged on one side in the longitudinal direction of the insertion part (200), and the connecting part (250) is arranged on the other side. In addition, the lighting photographing part (210) and the connecting part (250) can be connected by the insertion tube (220), and at least a part of the wire (230) can pass from the connecting part (250) to the insertion tube (220).

[0116]

[0117] The lighting photography unit (210) is inserted into the human body to irradiate light into the human body and photograph the inside of the human body.

[0118] The lighting shooting unit (210) includes a lighting shooting unit body (211), a lighting module (212), and a shooting module (213).

[0119] The lighting photographing unit body (211) forms the exterior of the lighting photographing unit (210) and is configured to be inserted into the human body. For example, the lighting photographing unit body (211) has a lighting module (212) and a photographing module (213) arranged on one longitudinal side, and the other longitudinal side is open so that it can be connected to an insertion tube (220).

[0120] At this time, depending on the embodiment, the lighting and photographing unit body (211) may function as a heat dissipation chassis. Specifically, the lighting and photographing unit body (211) may be in contact with a heat dissipation plate (214) to dissipate heat from the lighting module (212) and / or the photographing module (213).

[0121] For example, the lighting and photography unit body (211) may be a coil pipe made of spring material and may release heat generated from the lighting module (212) and / or the photography module (213).

[0122] The lighting module (212) can be coupled to the end cap (217). The lighting module (212) can irradiate light. The lighting module (212) can be equipped with a lighting lens that can receive power and irradiate light. For example, the lighting lens can be an LED (Light Emitting Diode).

[0123] Meanwhile, in this embodiment, multiple lighting lenses may be provided. Specifically, an even number of lighting lenses may be provided in this embodiment. For example, a pair of lighting lenses may be arranged symmetrically. This prevents asymmetry in the illumination of objects at close range and prevents gaps in the illumination.

[0124] At this time, a pair of lighting lenses can have different correlated color temperatures (CCTs). This can be used to create the desired light wavelength distribution.

[0125] In addition, the lighting module (212) may further include a lighting support member that supports a pair of lighting lenses. The lighting support member may be formed in a flat shape, and the tip portion may be formed to be symmetrically extended in pairs and bent upwards. A pair of lighting lenses may be coupled to the pair of bent extension members.

[0126] For example, the light support unit may be a flexible printed circuit board (PCB). An image sensor may be mounted on the flexible PCB. By utilizing multiple light lenses as the light unit, not only can the illumination intensity be easily controlled, but the amount of light emitted can also be significantly increased compared to conventional halogen lamps, thereby further enhancing the clarity of the image obtained through the image sensor.

[0127] Meanwhile, the photographing module (213) can photograph the inside of the human body. The photographing module (213) can receive power to photograph images of the inside of the human body and transmit the photographed image data. For example, the photographing module (213) may include a camera (213a) and an image processing unit (213b). In this case, the camera (213a) may be placed at one end (the tip) of the lighting photographing unit (210) in the longitudinal direction, and the image processing unit (213b) may be coupled with the camera (213a) to process images received from the camera.

[0128] Through this, the endoscope (1) of the present invention can irradiate light through the lighting module (212) and photograph the inside of the human body through the photographing module (213) while inserted into the human body.

[0129] A heat sink (214) can be placed inside the lighting and photography unit body (211). The heat sink (214) can be combined with a lighting module (212) and / or a photography module (213).

[0130] A heat sink (214) may be provided to transfer heat. The heat sink (214) may be formed of a material capable of transferring heat. For example, the heat sink (214) may be formed of a metal material.

[0131] The heat sink (214) can be in contact with the lighting module (212).

[0132] Meanwhile, a printed circuit board (218) may be in contact with the other longitudinal side of the heat sink (214). The printed circuit board (218) may control the lighting module (212) and / or the photographing module (213). A circuit capable of controlling the lighting module (212) and / or the photographing module (213) may be mounted on the printed circuit board (218). Through this, heat generated in the circuit may be transferred to the heat sink (214).

[0133]

[0134] The anti-reflection part (216) can prevent light irradiated from the lighting module (212) from being reflected to the photographing module (213).

[0135] The anti-reflection part (216) may include an anti-reflection plate, a lighting hole, a photographing hole, and an anti-reflection rib.

[0136] The anti-reflection plate may be coupled to the inside of the end cap (217). For example, the anti-reflection plate may be formed in a circular shape and coupled to the inside of the end cap (217).

[0137] At this time, the anti-reflection plate may be formed of an opaque material. For example, the anti-reflection plate may be black. This prevents light irradiated from the lighting module (212) from being reflected by the end cap (217) and transmitted into the interior of the end cap (217).

[0138] Meanwhile, the anti-reflection plate can be formed of a material that can prevent heat generated from the lighting module (212) from being transferred to the human body.

[0139] A lighting hole is formed in the anti-reflection plate, and light irradiated from the lighting module (212) can pass through it. The lighting hole can be formed corresponding to the position of the lighting module (212). For example, at least a portion of the lighting module (212) can pass through the lighting hole. Alternatively, light irradiated from the lighting lens can pass through the lighting hole. The lighting hole can be formed corresponding to the shape of the lighting module (212). For example, the lighting hole can be formed in the shape of a square hole corresponding to the shape of the lighting lens.

[0140] The shooting hole is formed in the anti-reflection plate and can be formed at a position facing the shooting module (213). The shooting hole can be formed corresponding to the position of the shooting module (213). For example, at least a portion of the camera (213a) can pass through the shooting hole. The shooting hole can be formed corresponding to the shape of the shooting module (213). For example, the shooting hole can be formed in a circular hole shape corresponding to the shape of the camera (213a).

[0141] At this time, the shooting hole can be placed between a pair of lighting holes. That is, the lighting holes can be placed symmetrically in pairs based on the shooting hole.

[0142] The anti-reflection rib may be formed to protrude from the anti-reflection plate toward the end cap (217). At this time, the anti-reflection rib may be inserted into the anti-reflection slit formed in the end cap (217).

[0143] The anti-reflection rib may be formed as a protruding straight rib. For example, the anti-reflection rib may be formed as a straight rib, but may be formed in a form that is bent at least once. In this way, the anti-reflection rib may surround the light-emitting portion of the end cap (217).

[0144] Anti-reflection ribs may be placed between the lighting hole and the photographing hole. The anti-reflection ribs may be placed in pairs symmetrically with respect to the photographing hole.

[0145] The anti-reflective ribs may be formed from the same material as the anti-reflective plate. The anti-reflective ribs may be formed from an opaque material. For example, the anti-reflective ribs may be black.

[0146] Accordingly, the anti-reflection rib can block the light irradiated from the lighting module (212) from being totally reflected along the end cap (217) toward the photographing module (213).

[0147] An end cap (217) is provided at the longitudinal end (tip) of the lighting photographing unit (210). The end cap (217) has a cylindrical structure and is coupled to the end of the insertion unit (200). At this time, at least a portion of the lighting module (212) and the photographing module (213) can be accommodated in the end cap (217). In addition, an anti-reflection unit (216) can be coupled to the inside of the end cap (217).

[0148] The end cap (217) may include a lighting arrangement portion positioned facing the lighting module (212) and a camera arrangement portion positioned facing the photographing module (213). In this case, the lighting arrangement portions may be arranged symmetrically in pairs with respect to the camera arrangement portion.

[0149] The end cap (217) can be formed of a transparent material.

[0150] Meanwhile, the present invention may include an anti-reflection slit formed between the lighting arrangement and the camera arrangement.

[0151] At this time, the anti-reflection slits can also be arranged symmetrically in pairs based on the camera arrangement.

[0152] Meanwhile, the end cap (217) may be formed with a plurality of channel receiving tubes into which channels (not shown) are inserted. Each channel receiving tube has a cylindrical shape with an empty interior and is formed to have an inner diameter corresponding to the outer diameter of each channel (180) to be inserted. In addition, an O-ring may be provided inside to prevent leakage of supplied water or air, etc.

[0153] Meanwhile, the lighting photography unit (210) may be equipped with a connection terminal. The connection terminal may be equipped to correspond to the connection terminal of the operation unit (100). That is, the operation unit (100) may be equipped with a male terminal, and the insertion unit (200) may be equipped with a female terminal.

[0154]

[0155] The insertion tube (220) connects the lighting photographing unit (210) and the connecting unit (250) and can be bent according to the operation of the operating unit (100).

[0156] Specifically, the insertion tube (220) can be bent according to the movement of the wire (230).

[0157] Meanwhile, the insertion tube (220) can accommodate multiple channels (not shown) and terminals inside.

[0158] The insertion tube (220) may include a bending portion (221), an adapter (222), a coil spring (223), and an insertion tube (224). At this time, the bending portion (221) may be placed between a pair of adapters (222), and one of the pair of adapters (222) may be coupled to the lighting photographing portion (210), and the other may be coupled to the connecting portion (250).

[0159] The bending portion (221) can be configured to bend according to the movement of the wire (230).

[0160] The bending portion (221) includes a first bending member (2211) and a second bending member (2212) that are rotated relative to each other. At this time, the bending portion (221) may have a plurality of first bending members (2211) and second bending members (2212) alternately arranged. In addition, as the number of the first bending members (2211) and the second bending members (2212) increases, the overall length of the bending portion (221) may increase. Therefore, the number of the first bending members (2211) and the second bending members (2212) may be adjusted according to the usage conditions of the endoscope (1) to select an appropriate length of the insertion tube (220).

[0161] The first bending member (2211) and the second bending member (2212) may be provided to rotate relative to each other.

[0162] The first bending member (2211) includes a first bending member body (2211a), a concave portion (2211b), and a wire penetration hole (2211c).

[0163] The first bending member body (2211a) may be formed in an overall circular shape. At this time, the longitudinal thickness of the first bending member body (2211a) may be repeatedly changed at predetermined angular intervals along the circumferential direction. For example, the first bending member body (2211a) may be formed in a shape in which the thickness decreases as it moves away from the concave portion (2212b) along the circumferential direction.

[0164] Meanwhile, in the present embodiment, the first bending member body (2211a) may be formed of a resin material. For example, the first bending member body (2211a) may be formed of a plastic material. Such a material has the advantage of improving processability and reducing production costs.

[0165] At this time, a concave portion (2211b) may be formed in the first bending member body (2211a) so that it can be rotated relative to the second bending member (2212).

[0166] The concave portions (2211b) may be formed in four numbers on the first bending member body (2211a), and a pair may be formed on one end in the longitudinal direction of the first bending member body (2211a), and a pair may be formed on the other end in the longitudinal direction of the first bending member body (2211a). At this time, one pair formed on one end and one pair formed on the other end of the first bending member body (2211a) may be alternately arranged with a phase difference of 90 degrees from each other along the circumferential direction. That is, the concave portions (2211b) may be arranged with a phase difference of 180 degrees from each other along the circumferential direction when a pair is formed on an end in the same direction, but may be arranged with a phase difference of 90 degrees from each other when a pair is formed on an end in the other direction.

[0167] The concave portion (2211b) may be formed by recessing from the longitudinal end of the first bending member body (2211a). At this time, the concave portion (2211b) may be formed by recessing in an arch shape having a predetermined curvature from the longitudinal end of the first bending member body (2211a).

[0168] The concave portion (2211b) can accommodate at least a portion of the convex portion (2212b) of the second bending member (2212) described later. In addition, the concave portion (2211b) and the convex portion (2212b) can be rotated relative to each other. At this time, the concave portion (2211b) and the convex portion (2212b) can come into contact with each other.

[0169] Therefore, when the first bending member body (2211a) and the second bending member body (2212a) are coupled, the gap between the first bending member body (2211a) and the second bending member body (2212a) may not be constant. That is, when the first bending member (2211) and the second bending member (2212) are coupled, the concave portion (2211b) and the convex portion (2212b) may come into contact with each other, and the gap between the first bending member body (2211a) and the second bending member body (2212a) may increase as the distance from the concave portion (2211b) and the convex portion (2212b) in the circumferential direction increases.

[0170] Through this gap, a range in which the first bending member (2211) and the second bending member (2212) can be rotated relative to each other can be provided according to the movement of the wire (230).

[0171] Meanwhile, the first bending member body (2211a) may have a radial thickness that increases at a location where the concave portion (2211b) is formed. For example, the first bending member body (2211a) may be formed to have a constant outer diameter on a concentric circle, but the inner diameter at a location where the concave portion (2211b) is formed may be formed to decrease. That is, the first bending member body (2211a) may be formed in a form where the inner circumferential surface at a location where the concave portion (2211b) is formed protrudes radially inward.

[0172] In addition, at the location where the concave portion (2211b) is formed, a wire penetration hole (2211c) may be formed along the longitudinal direction. That is, the wire penetration hole (2211c) may be a hole formed in a circular shape at a location protruding radially inward from the inner peripheral surface of the first bending member body (2211a).

[0173] At this time, a wire (230) can pass through the wire penetration hole (2211c).

[0174]

[0175] The second bending member (2212) includes a second bending member body (2212a), a convex portion (2212b), and a wire penetration hole (2212c).

[0176] The second bending member body (2212a) may be formed in an overall circular shape. At this time, the longitudinal thickness of the second bending member body (2212a) may be repeatedly changed at 180-degree intervals along the circumferential direction. For example, the second bending member body (2212a) may be formed such that the longitudinal thickness decreases as it moves away from the position where the convex portion (2212b) is formed along the circumferential direction.

[0177] Meanwhile, in the present embodiment, the second bending member body (2212a) may be formed of a resin material. For example, the second bending member body (2212a) may be formed of a plastic material. Such a material has the advantage of improving processability and reducing production costs.

[0178] At this time, a convex portion (2212b) may be formed on the second bending member body (2212a) so that it can rotate relative to the first bending member (2211).

[0179] The convex portions (2212b) may be formed in four numbers on the second bending member body (2212a), and a pair may be formed on one end in the longitudinal direction of the second bending member body (2212a), and a pair may be formed on the other end in the longitudinal direction of the second bending member body (2212a). At this time, one pair formed on one end and one pair formed on the other end of the second bending member body (2212a) may be alternately arranged with a phase difference of 90 degrees from each other along the circumferential direction. That is, the convex portions (2212b) may be arranged with a phase difference of 180 degrees from each other along the circumferential direction when a pair is formed on an end in the same direction, but may be arranged with a phase difference of 90 degrees from each other when a pair is formed on an end in the other direction.

[0180] The convex portion (2212b) may be formed to protrude from the longitudinal end of the second bending member body (2212a). At this time, the convex portion (2212b) may be formed to correspond to the shape of the concave portion (2211b). For example, the convex portion (2212b) may be formed to protrude in an arch shape having a predetermined curvature from the longitudinal end of the second bending member body (2212a), and the protruding curvature of the convex portion (2212b) and the sunken curvature of the concave portion (2211b) may be the same.

[0181] With this configuration, at least a portion of the convex portion (2212b) can be accommodated in the concave portion (2211b). In addition, the convex portion (2212b) and the concave portion (2211b) can be rotated relative to each other while making surface contact with each other.

[0182] Meanwhile, the second bending member body (2212a) may have a larger radial thickness at a position where the convex portion (2212b) is formed. For example, the second bending member body (2212a) may be formed to have a constant outer diameter on a concentric circle, but the inner diameter at a position where the convex portion (2212b) is formed may be formed to be smaller. That is, the second bending member body (2212a) may be formed in a form where the inner peripheral surface at a position where the convex portion (2212b) is formed protrudes radially inward.

[0183] In addition, at the location where the convex portion (2212b) is formed, a wire penetration hole (2212c) may be formed along the longitudinal direction. That is, the wire penetration hole (2212c) may be a hole formed in a circular shape at a location protruding radially inward from the inner peripheral surface of the second bending member body (2212a).

[0184] At this time, a wire (230) can pass through the wire penetration hole (2212c).

[0185] Meanwhile, the inner circumference of the convex portion (2212b) itself does not protrude inwardly in the radial direction, and may be formed to be the same as the maximum inner diameter of the second bending member body (2212a). That is, the inner circumference of the convex portion (2212b) does not protrude radially inwardly from the position where the wire through hole (2212c) is formed. Therefore, when the inner circumference of the second bending member (2212) is examined as a whole, it has a uniform inner circumference, but the inner circumference at the position where the wire through hole (2212c) is formed has a shape that protrudes radially inwardly.

[0186] In addition, a wire guide groove (2212d) may be formed on the inner surface of the convex portion (2212b). The wire guide groove (2212d) may be formed in an arc shape by being sunken into the inner surface of the convex portion (2212b), and the origin of the arc may be connected to the wire penetration hole (2212c).

[0187] Due to this shape, when the wire (230) moves with the position in contact with the second bending member body (2212a) as the fixed end, the range of movement of the free end can be limited by the wire guide groove (2212d). That is, the maximum angle of bending in each second bending member (2212) can be the central angle of the arc in the wire guide groove (2212d).

[0188] The adapter (222) can be connected to each of the longitudinal ends of the bending portion (221). At this time, the adapter (222) located on one longitudinal side can be connected to the lighting photographing portion (210), and the adapter (222) located on the other longitudinal side can be connected to the connecting portion (250).

[0189] The adapter (222) includes an adapter body (2221), a spring coupling portion (2222), a wire receiving groove (2223), a wire through hole, and a bending member connecting portion (2225).

[0190] The adapter body (2221) is formed in an overall cylindrical shape, and a spring coupling portion (2222) may be formed on the outer surface of the adapter body (2221). In addition, a wire receiving groove (2223) may be formed along the longitudinal direction on the inner or outer surface of the adapter body (2221). In addition, a wire penetration hole may be formed along the longitudinal direction in the adapter body (2221). In addition, a bending portion connecting portion (2225) may be formed on the longitudinal end of the adapter body (2221).

[0191] The spring coupling portion (2222) can be coupled to the longitudinal end of the coil spring (2223). For example, the spring coupling portion (2222) can be formed in the form of a rib that protrudes along the circumferential direction from the outer surface of the adapter body (2221). Through this, the end of the coil spring (2223) can be supported by being caught on the spring coupling portion (2222).

[0192] Accordingly, a coil spring (223) can be placed between spring coupling portions (2222) formed on a pair of adapters (222), and the restoring force of the coil spring (223) can be applied to the pair of adapters (222).

[0193] The wire receiving groove (2223) may be formed along the length direction on the inner or outer surface of the adapter body (2221). For example, four wire receiving grooves (2223) may be formed along the length direction on the inner surface of the adapter body (2221).

[0194] At least a portion of the wire (230) can be accommodated in the wire receiving groove (2223). The wire (230) can be reciprocated along the length direction along the wire receiving groove (2223) according to the operation of the operating knob (120).

[0195] Although not shown, the wire through hole may be formed along the length direction of the adapter body (2221). At this time, at least a portion of the inner circumferential surface of the adapter body (2221) may be formed to protrude at a position where the wire receiving groove (2223) is formed, and the wire through hole may be formed at the protruding portion. That is, the wire through hole may be positioned at a position connected to the wire receiving groove (2223).

[0196] At this time, a wire (230) can pass through the wire penetration hole.

[0197] Meanwhile, the bending member connecting portion (2225) may be formed to be relatively rotatable and coupled with the bending member (221). That is, the bending member connecting portion (2225) may be formed with a convex or concave structure corresponding to the concave portion (2211b) of the first bending member (2211) or the convex portion (2212b) of the second bending member (2212) so as to be coupled therewith.

[0198] Meanwhile, the coil spring (223) may be arranged to surround the outer circumference of the bending portion (221). That is, the coil spring (223) may be arranged to surround the outer circumference of the first bending member (2211) and the second bending member (2212) when the first bending member (2211) and the second bending member (2212) are coupled.

[0199] On the other hand, the longitudinal ends of the coil spring (223) can be coupled with the adapter (222). The coil spring (223) can be elastically supported by the spring coupling portion (2222) of a pair of adapters (222). Therefore, when the bending portion (221) is bent according to the operation of the operation knob (120), the coil spring (223) can apply elastic force to restore it to its original position.

[0200] Meanwhile, an insertion tube (224) may be placed on the other longitudinal side of the insertion tube (220). The insertion tube (224) is formed in a bendable tube shape, and a wire (230), a channel (not shown), and a terminal may pass through the inside. Although not shown, a coil pipe may be provided within the insertion tube (224) to provide elasticity to the insertion tube (224).

[0201]

[0202] Meanwhile, the wire (230) receives the operating force of the operating knob (120) through the connecting portion (250) and can bend the insertion tube (220) through a linear reciprocating motion.

[0203] The wire (230) may have one longitudinal end connected to an adapter (222) or a lighting photographing unit (210), and the other longitudinal end connected to a wire reel (253). At this time, the wire (230) may pass through a wire penetration hole of the adapter (222), a wire penetration hole (2211c) of the first bending member (2211), and a wire penetration hole (2212c) of the second bending member (2212).

[0204] Accordingly, on the side where the wire (230) is pulled, the first bending member (2211) and the second bending member (2212) can be relatively rotated so that the gap between the first bending member (2211) and the second bending member (2212) becomes narrow. On the other hand, on the side where the wire (230) is released (lengthened), the first bending member (2211) and the second bending member (2212) can be relatively rotated so that the gap between the first bending member (2211) and the second bending member (2212) becomes wide. Accordingly, the first bending member (2211) and the second bending member (2212) can form a bent shape. At this time, the bending angle between the first bending member (2211) and the second bending member (2212) can be limited according to the angle of the wire guide groove (2212d).

[0205]

[0206] The connecting part (250) is detachably connected to the connecting part (190) of the operating part (100). The connecting part (250) may include a connecting part housing (251), a driven gear (252), and a wire reel (253).

[0207] The connecting part housing (251) can be coupled with the insertion tube (220) on one longitudinal side and detachably coupled with the coupling part (190) on the other longitudinal side. At this time, one longitudinal side of the connecting part housing (251) can be coupled with the other longitudinal side of the insertion tube (220), and the other longitudinal side of the connecting part housing (251) can be provided so as to be detachably coupled with the coupling part (190).

[0208] The connecting part housing (251) may be formed in an overall rectangular cylinder shape, but may be formed in a shape in which the diameter becomes narrower as it goes toward one end (tip) in the longitudinal direction. Consequently, the connecting part housing (251) may be formed in a shape in which one end in the longitudinal direction can be coupled with the insertion tube (224) of the insertion tube (220), and thus connected.

[0209] The longitudinal side of the connecting part housing (251) may be provided to be engaged with the coupling part (190).

[0210] Specifically, at least one hook (251a) may be formed to extend from the longitudinal opposite end of the connecting part housing (251). For example, the hooks (251a) may be formed to extend from two opposing sides of the connecting part housing (251) in the longitudinal direction, respectively. For example, a pair of hooks (251a) may be formed to extend from the left and right sides of the connecting part housing (251), respectively. At this time, the hooks (251a) may be coupled to the coupling portion (190) formed on the outer surface of the operating part housing (110). Specifically, the hooks (251a) may slide along the guide groove (191), and may be fixed by being hooked to the hooking protrusion (192).

[0211] At this time, depending on the embodiment, a guide portion may be further formed on the connecting portion housing (251) to guide the position of the connection with the coupling portion (190). At this time, the guide portion may be formed on a surface different from the two surfaces on which the pair of hooks (251a) are respectively formed. For example, the guide portion may be formed to extend from the upper surface of the connecting portion housing (251). Accordingly, when the user couples the connecting portion (250) and the coupling portion (190), the user can distinguish which side is the upper surface and which side is the lower surface, thereby preventing incorrect assembly.

[0212] Meanwhile, a pin receiving groove (251b) for receiving a guide pin (193) may be formed on the longitudinal end surface of the connecting part housing (251). Accordingly, a user can connect the coupling part (190) and the connecting part (250) in the correct position.

[0213] Meanwhile, a gear hole (251c) may be formed on the longitudinal end surface of the connecting portion housing (251). The gear hole (251c) may be arranged so that at least a portion of the driven gear (252) passes through it. At this time, when the operating portion (100) is separated from the insertion portion (200), at least a portion of the driven gear (252) may be exposed to the outside.

[0214] In addition, a channel connecting portion (251d) may be provided on the longitudinal end surface of the connecting portion housing (251). The channel connecting portion (251d) may be arranged at the longitudinal end of a channel (not shown). Through this, when the operating portion (100) and the insertion portion (200) are coupled, the channel (180) of the operating portion (100) and the channel (not shown) of the insertion portion (200) may be connected.

[0215] In addition, a connector (251e) capable of connecting a connection terminal may be provided on the longitudinal end surface of the connecting portion housing (251). Through this, when the operating portion (100) and the insertion portion (200) are coupled, the connector (196) of the operating portion (100) and the connector (251e) of the insertion portion (200) can be connected to each other.

[0216] As a result, the connecting part housing (251) can be fitted with the coupling part (190). At this time, the driving gear (170) and the driven gear (252) are meshed with each other, the channel (180) of the operating part (100) and the channel (not shown) of the insertion part (200) are connected to each other, and the terminals of the operating part (100) and the insertion part (200) can be connected to each other.

[0217] The driven gear (252) can receive driving force from the driving gear (170). When the operating unit (100) and the insertion unit (200) are coupled, the driven gear (252) can mesh with the driving gear (170). Specifically, the driven gear (252) includes a first driven gear (252a) and a second driven gear (252b). At this time, when the operating unit (100) and the insertion unit (200) are coupled, the first driven gear (252a) can mesh with the first driving gear (171), and the second driven gear (252b) can mesh with the second driving gear (172).

[0218] Accordingly, when the first driving gear (171) rotates, the first driven gear (252a) can rotate in conjunction, and when the second driving gear (172) rotates, the second driven gear (252b) can rotate in conjunction.

[0219] Meanwhile, the first driven gear (252a) can receive rotational force from the first driving gear (171) to rotate the first wire reel (253a). In addition, the second driven gear (252b) can receive rotational force from the second driving gear (172) to rotate the second wire reel (253b).

[0220] For example, the first driven gear (252a) may be formed integrally with the first wire reel (253a). In this case, the first driven gear (252a) and the first wire reel (253a) may be formed with a hollow radial center. This can reduce the overall number of parts.

[0221] Meanwhile, the second driven gear (252b) may include a gear portion (252ba) having gear teeth formed thereon and a shaft portion (252bb) formed to extend upwardly in the axial direction from the radial center of the gear portion. At this time, the shaft portion (252bb) may penetrate the hollow of the first driven gear (252a) and the first wire reel (253a). In addition, the axially upper end of the shaft portion (252bb) may be key-coupled with the second wire reel (253b). Therefore, the second driven gear (252b) and the second wire reel (253b) may be coupled to each other and rotate together.

[0222] Meanwhile, the first driven gear (252a) may be positioned above the second driven gear (252b). In addition, the first wire reel (253a) may be positioned below the second wire reel (253b). That is, the first driven gear (252a) and the first wire reel (253a) may be positioned between the second driven gear (252b) and the second wire reel (253b).

[0223] Meanwhile, the wire reel (253) can move the wire (230) by rotating in conjunction with the rotation of the driven gear (252). The wire reel (253) can include a first wire reel (253a) and a second wire reel (253b).

[0224] At this time, the first wire reel (253a) may include a reel body (253aa) formed in a cylindrical or cylindrical shape and a wire fixing portion (253ab) disposed on the radially outer side of the reel body (253aa) to which the wire (230) is fixedly connected. At this time, the reel body (253aa) may have an axial lower end formed to extend radially outward, and a wire fixing portion (253ab) may be formed to extend upward from the radially outer end of the extended portion. Therefore, the reel body (253aa) and the wire fixing portion (253ab) may be rotated integrally.

[0225] Therefore, when the first driven gear (252a) rotates, the reel body (253aa) and the wire fixing part (253ab) rotate together to push or pull the wire (230).

[0226] In addition, the second wire reel (253b) may include a reel body (253ba) formed in a cylindrical or cylindrical shape, a wire fixing portion (253bb) positioned radially outer side of the reel body (253ba) to which the wire (230) is fixedly connected, and a key portion (253bc) protruding from the axial lower end of the reel body (253ba) and coupled with the shaft portion (252bb) of the second driven gear (252b). At this time, the reel body (253ba) may have an axial lower end that extends radially outward, and the wire fixing portion (253bb) may extend upward from the radially outer end of the extended portion, and a key portion (253bc) may be formed to protrude downward on the axial lower surface of the reel body (253ba). Accordingly, when the second driven gear (252b) rotates, the key portion (253bc) rotates together, and the reel body (253ba) and the wire fixing portion (253bb) can rotate. As a result, the second wire reel (253b) can move the wire (230) by pushing or pulling it.

[0227] Meanwhile, the connecting portion (250) may further include a support shaft (254). The support shaft (254) is formed in a cylindrical shape and is fixedly connected to the connecting portion housing (251), and may penetrate the radial centers of the first driven gear (252a), the second driven gear (252b), the first wire reel (253a), and the second wire reel (253b). Accordingly, the support shaft (254) may provide a rotation axis of the first driven gear (252a), the second driven gear (252b), the first wire reel (253a), and the second wire reel (253b).

[0228] Therefore, according to the present invention, when the user operates (turns) the first knob (121), the first driving sprocket (131) rotates together, the first driven sprocket (141) rotates in conjunction with the first driving sprocket (131) by the first operating chain (151), and the first driving gear (171) rotates together with the first driven sprocket (141). Then, in a state where the operating unit (100) and the insertion unit (200) are coupled, the first driven gear (252a) meshed with the first driving gear (171) rotates in conjunction with the rotation of the first driving gear (171), and the first wire reel (253a) rotates integrally with the first driven gear (252a) to move the wire (230) and bend the insertion tube (220).

[0229] In addition, when the user operates (turns) the second knob (122), the second driving sprocket (132) rotates together, the second driven sprocket (142) rotates in conjunction with the second driving sprocket (132) by the second operating chain (152), and the second driving gear (172) rotates together with the second driven sprocket (142). In addition, when the operating unit (100) and the insertion unit (200) are coupled, the second driven gear (252b) meshed with the second driving gear (172) rotates in conjunction with the rotation of the second driving gear (172), and the second wire reel (253b) rotates integrally with the second driven gear (252b) to move the wire (230) and bend the insertion tube (220).

[0230]

[0231] Although the present invention has been described in detail through specific examples, this is for the purpose of specifically explaining the present invention, and the present invention is not limited thereto, and it is clear that the present invention can be modified or improved by a person having ordinary knowledge in the relevant field within the technical spirit of the present invention.

[0232] All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be made clear by the appended claims.

Claims

1. An insertion unit having a lighting and photography unit and an insertion tube; and An operating unit detachably connected to the insertion unit and configured to bend the insertion tube according to an operating knob and an operation of the operating knob; Including, The above operating part, A power transmission unit that rotates in conjunction with the above-mentioned operating knob; and A drive gear that rotates in conjunction with the above power transmission unit; Endoscopy including.

2. In paragraph 1, The above insertion part, A driven gear meshed with the above driving gear; Endoscopy including.

3. In paragraph 2, The above insertion part, A wire that moves according to the rotation of the above driven gear and bends the insertion tube; Endoscopy that includes more.

4. In paragraph 1, The above power transmission unit, A drive sprocket that rotates in conjunction with the rotation of the above operating knob; and A driven sprocket to which an operating chain is connected and which rotates in conjunction with the driving sprocket; Endoscopy including.

5. In paragraph 1, The above operation knob is, a first knob provided to be rotatable; and A second operating knob positioned lower than the first knob; Including, The above power transmission unit, A first power transmission unit that rotates in conjunction with the first knob; and A second power transmission unit positioned above the first power transmission unit and rotated in conjunction with the second operation knob; Endoscopy including.

6. In paragraph 5, The above driving gear is, A first drive gear that rotates in conjunction with the first power transmission unit; and A second driving gear positioned lower than the first driving gear and rotating in conjunction with the second power transmission unit; Endoscopy including.

7. In paragraph 2, The above insertion part, A wire reel that rotates in conjunction with the above-mentioned driven gear and to which wire is coupled; Endoscopy that includes more.

8. In paragraph 5, The above operating part, a first knob shaft connecting the first knob and the first power transmission unit; and A second knob shaft that is provided to be rotatable relative to the first knob shaft and connects the second operation knob and the second power transmission unit; Endoscopy including.

9. In paragraph 6, The above operating part, A connecting shaft connecting the first power transmission unit and the first drive gear; Endoscopy including.

10. In paragraph 6, The above second power transmission unit, An endoscope characterized in that it is spline-coupled with the second driving gear.

11. In paragraph 7, The above driven gear is, first driven gear; and A second driven gear positioned above the first driven gear; Including, The above wire reel, A first wire reel that rotates in conjunction with the first driven gear; and A second wire reel positioned lower than the first wire reel and rotated in conjunction with the second driven gear; Endoscopy including.

12. In paragraph 11, An endoscope characterized in that the second driven gear and the second wire reel are formed integrally.

13. In paragraph 7, The above wire reel, reel body; A wire joint formed to extend radially outward from the outer surface of the reel body and to which the wire is fixedly connected; Endoscopy including.

14. In paragraph 1, The above insertion part, Connecting part housing; A hook formed to extend from the end of the connecting part housing toward the operating part and detachably connected to the operating part; Endoscopy including.

15. An insertion section having a lighting and photography section and an insertion tube; and An operating unit detachably connected to the insertion unit and configured to bend the insertion tube according to an operating knob and an operation of the operating knob; Including, The above operating part, A driving gear that rotates in conjunction with the above operating knob; Including, The above insertion part, When combined with the above operating unit, a driven gear meshed with the driving gear; Endoscopy including.

16. A lighting and photographing unit including a lighting module for irradiating light and a photographing module for photographing an image; An insertion tube that bends as the wire moves; A driven gear that rotates when an external force is applied; and A wire reel that rotates in conjunction with the driven gear and moves the wire by engaging the wire; Endoscopy including.

Images