Endoscope

Abstract

The present invention relates to an endoscope comprising: an insertion unit including an illumination and imaging unit and an insertion tube; and an operation unit which has an operation knob and bends the insertion tube by manipulation of the operation knob, wherein the insertion tube comprises a bending unit bent according to the manipulation of the operation unit, and the bending unit comprises a plurality of bending sections which are injection-molded with a first material, and a connection portion which is injection-molded with a second material different from the first material and connects the plurality of bending sections, whereby it is possible to manufacture a bending unit capable of providing bending performance even at low cost.

Description

endoscopy

[0001] The present invention relates to an endoscope, and more specifically, to an endoscope in which an insertion part and an operating part are detachably provided so that the insertion part can be replaced for use.

[0002]

[0003] A medical endoscope is a device used to directly insert into internal human tissues for examination or procedure to check the condition of the affected area or perform a procedure.

[0004] A conventional endoscope places an articulated assembly at one end of a flexible insertion tube to allow for adjustment of the insertion direction during insertion into the human body. A tip body equipped with an image sensor and a light source is provided at one end of the articulated 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 illustrated) via a separate cable and connector.

[0005] Dials and buttons used for adjusting the direction of the joint assembly and for procedures are arranged on the handle body.

[0006] A pair of dials is arranged to allow the direction of travel of the tip body to be adjusted vertically and horizontally relative to the longitudinal direction of the insertion tube. Inside the handle body, a sprocket and a chain are provided to convert the rotational motion of the dials into linear motion. The chain is connected to the end of the joint assembly via a separate wire. Consequently, the rotation of the dials 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. This allows the operator of the endoscope to control the direction of travel of the tip body during the process of inserting the insertion tube into the human body.

[0007] Here, since the endoscope is inserted into the human body, thorough hygiene management is required, and cleaning and disinfection must be performed before and after medical examinations or surgeries. In some cases, it may be impossible or undesirable to reuse the parts actually inserted into the body, namely the insertion tube and joint assembly. In such cases, since conventional endoscopes consist of a single body, the problem arises that the entire endoscopic device must be replaced. Furthermore, even if reuse is possible, if only a part of the endoscope can be separated rather than the entire device, cleaning and disinfection can be performed more easily.

[0008] Meanwhile, Japanese registered patent JP6401429B2 discloses an endoscope comprising a curved portion that is bent through a plurality of curved sections.

[0009] However, the curved section of the above endoscope is formed as an annular shape with three thicknesses, making it difficult to process.

[0010] In addition, although four wires must be passed through multiple curved holes for assembly, there is no structure to guide the exact position, so there is a limitation in that assembly is difficult and it is difficult to maintain the shape even after assembly.

[0011] In addition, the above-mentioned curved section has a structure in which a convex portion formed protruding in the longitudinal direction comes into contact with another curved section, and a problem may occur in which the convex portion detaches during the bending process, causing the bending section to deform.

[0012]

[0013] The present invention was created to improve upon the problems of conventional endoscopes as described above, and aims to provide an endoscope capable of manufacturing a bending part using a low-cost material that possesses both rigidity and flexibility.

[0014] In addition, the purpose is to provide an endoscope capable of producing a bending part that can be manufactured at a low cost through a simple process.

[0015] In addition, the purpose is to provide an endoscope capable of preventing the convex portion from deviating radially outward during the bending operation.

[0016] In addition, the purpose is to provide an endoscope capable of distinguishing multiple wires.

[0017] In addition, the purpose is to provide an endoscope that can stably fix the wire to the illumination unit.

[0018]

[0019] To achieve the above-mentioned purpose, the endoscope according to the present invention comprises: an insertion part having an illumination imaging part and an insertion tube; and an operating part having an operating knob and operating the insertion tube to bend according to the operation of the operating knob; wherein the insertion tube comprises a bending part that bends according to the operation of the operating part; and wherein the bending part comprises a first bending member having a concave part formed therein; and a second bending member having a convex part formed therein and coupled to the first bending member; and wherein the first bending member comprises an anti-detachment projection that contacts and supports the convex part.

[0020] At this time, the first bending member comprises an annular first bending member body in which the concave portion is formed; and the anti-detachment projection may be formed to protrude along the longitudinal direction from the concave portion.

[0021] At this time, the above anti-detachment projections may be formed as a pair at each end in the longitudinal direction of the first bending member body.

[0022] At this time, a pair of the above-mentioned anti-detachment projections may be formed at positions facing each other along the circumferential direction at both ends of the first bending member body in the longitudinal direction.

[0023] In addition, the above anti-detachment projection may be arranged along the circumferential direction of the first bending member body with a constant phase difference.

[0024] Meanwhile, the radial thickness of the above anti-detachment projection may be thinner than the thickness of the first bending member body.

[0025] In addition, the above anti-detachment projection may be formed at the radially outer end of the concave portion.

[0026] Meanwhile, the second bending member includes a second bending member body in which the convex portion is formed protrudingly at a longitudinal end; and the convex portion can be received relatively rotatablely in the concave portion.

[0027] The above convex portion may have a stepped portion formed therein that accommodates the above anti-detachment projection.

[0028] Meanwhile, the above-mentioned insertion part comprises a wire that bends the insertion tube through linear reciprocating motion;

[0029] In addition, the insert may further include a coil pipe that accommodates the wire inside.

[0030] Additionally, the insertion tube further includes an adapter that is coupled to the first bending member or the second bending member and disposed at the longitudinal end of the bending portion.

[0031] At this time, the adapter may have a plurality of wire receiving grooves into which the coil pipe is inserted.

[0032] At this time, the multiple wire receiving grooves may have different longitudinal positions within the adapter.

[0033] Meanwhile, the above-mentioned lighting unit may include a lighting unit body that is coupled to the bending unit and to which the bending wire is coupled.

[0034] At this time, a wire passage hole through which the bending wire passes may be formed in the body of the lighting unit.

[0035] In addition, the body of the lighting unit may have a wire guide groove formed therein that connects the wire passage hole and accommodates the wire.

[0036]

[0037] As explained above, the endoscope according to the present invention has the effect of enabling the production of a bending part at a low cost by providing a bending part composed of a rigid polycarbonate-based bending section and a flexible urethane-based connecting part.

[0038] In addition, since the bending part is manufactured by injecting two types of materials at once using a single mold, it has the effect of being able to manufacture the bending part at a low cost.

[0039] In addition, by forming an anti-detachment projection that contacts and supports the convex portion, it is possible to prevent the convex portion from deviating radially outward during the bending operation.

[0040] In addition, multiple wire receiving grooves are formed in the adapter with different axial depths, which has the effect of distinguishing the wires from one another.

[0041] In addition, by forming a wire passage hole in the body of the lighting unit, the wire can be stably fixed to the lighting unit.

[0042] In addition, by forming a wire guide groove connecting the wire passage hole, the wire can move stably, thereby improving the accuracy of the bending operation.

[0043]

[0044] FIG. 1 is a perspective view illustrating an endoscope according to one embodiment of the present invention.

[0045] Figure 2 is a cross-sectional view of the insertion part in Figure 1.

[0046] FIG. 3 is a plan view illustrating the connection between the wire reel and the wire in the insertion part according to one embodiment of the present invention.

[0047] FIG. 4 is an exploded perspective view for explaining the internal structure of an insertion part in an endoscope according to one embodiment of the present invention.

[0048] FIG. 5 is a perspective view for explaining the illumination and imaging unit in the insertion part according to one embodiment of the present invention.

[0049] FIG. 6 is a drawing illustrating an insertion tube in an endoscope according to one embodiment of the present invention.

[0050] FIGS. 7 and 8 are drawings for explaining the illumination imaging body in an endoscope according to one embodiment of the present invention.

[0051] FIG. 9 is a drawing for explaining a first bending member in an endoscope according to an embodiment of the present invention.

[0052] FIG. 10 is a drawing for explaining a second bending member in an endoscope according to one embodiment of the present invention.

[0053] FIG. 11 is a drawing for explaining the state in which a first bending member and a second bending member are connected in an endoscope according to an embodiment of the present invention.

[0054] Fig. 12 is a cross-sectional view of Fig. 11.

[0055] FIG. 13 is a cross-sectional view illustrating an adapter in an endoscope according to one embodiment of the present invention.

[0056]

[0057] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings.

[0058] The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. This is not intended to limit the present invention to specific embodiments, and should be interpreted to include all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention.

[0059] In describing the present invention, terms such as "first," "second," etc., may be used to describe various components, but said components may not be limited by said terms. Such terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component.

[0060] The term "and / or" may include a combination of multiple related listed items or any of the multiple related listed items.

[0061] When it is stated that one component is "connected" or "connected" to another component, it can be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it can be understood that there are no other components in between.

[0062] The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions may include plural expressions unless the context clearly indicates otherwise.

[0063] In this application, terms such as “comprising” or “having” are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not excluding in advance the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0064] Unless otherwise defined, all terms used herein, including technical or scientific terms, may have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries may be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and may not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.

[0065] In addition, the following embodiments are provided to explain more completely to those with average knowledge in the industry, and the shapes and sizes of the elements in the drawings may be exaggerated for clearer explanation.

[0066]

[0067] FIG. 1 shows a perspective view for explaining an endoscope according to one embodiment of the present invention, FIG. 2 shows a cross-sectional view of the insertion part in FIG. 1, and FIG. 3 shows a plan view for explaining the connection between the wire reel and the wire in the insertion part according to one embodiment of the present invention.

[0068] Referring to FIGS. 1 to 3, an endoscope (1) according to one embodiment of the present invention may be a disposable endoscope. Specifically, an endoscope (1) according to one embodiment of the present invention includes an operating part (100) and an insertion part (200). At this time, the operating part (100) and the insertion part (200) may be detachably coupled to each other by means of a coupling part (150, 250).

[0069]

[0070] The operating part (100) is provided so that an operator can operate it. The operating part (100) can be provided so that an operator can grasp and operate it. The operating part (100) can bend the insertion part (200) through the operator's operation.

[0071] The insertion part (200) is provided to be inserted into the human body by operation of the control part (100) so as to be able to photograph the inside of the human body. The insertion part (200) can be inserted into the human body and is provided to be bendable according to the operation of the control part (100) so as to be able to move along the internal structure of the human body, and can irradiate light and photograph the inside of the human body.

[0072]

[0073] Although not illustrated, the endoscope (1) according to one embodiment of the present invention may further include a connector adapter and a universal code.

[0074] Specifically, the endoscope (1) includes a connector adapter for connecting to an external device, and the connector adapter can be connected to the control unit (100) by a universal code. 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 control unit (100) while viewing the image captured by the insertion unit (200) on the image processing device.

[0075]

[0076] The control unit (100) includes a control unit housing (110), a control knob (120), a power transmission unit, and a control unit plate.

[0077] The control unit housing (110) is provided so that the operator can grip it. For example, the control unit housing (110) may be formed in the shape of a hollow tube, and a gripping guide may be formed on the outer surface of the control unit housing (110). Although not illustrated, the gripping guide may have a plurality of curved grooves formed therein to guide the position of the operator's hand. Additionally, a plurality of protrusions or grooves may be formed on the gripping guide to prevent the operator's hand from slipping.

[0078] The control unit housing (110) may be equipped with a control knob (120) and a plurality of valves and button parts. For example, a control knob (120) may be rotatably coupled to one side in the longitudinal direction of the control unit housing (110), and a plurality of valves and button parts may be arranged around the control knob (120). At this time, the control knob (120), the plurality of valves and button parts, and the insertion part (200) may be arranged in opposite directions relative to the gripping guide part. That is, if the control knob (120) and the plurality of valves and button parts are arranged on one side in the longitudinal direction of the control unit housing (110), the insertion part (200) may be coupled to the other side in the longitudinal direction of the control unit housing (110).

[0079] With this configuration, the operator can press the valve and button while holding the gripping guide with their palm, and can easily rotate the operating knob (120) with the hand opposite to the hand holding the operating housing (110).

[0080] Meanwhile, the control unit housing (110) may accommodate a power transmission unit for driving the insertion unit (200) inside.

[0081] The power transmission unit can rotate in conjunction with the operating knob (120) to transmit the rotational force of the operating knob (120). Various types of power transmission means may be applied to the power transmission unit. For example, the power transmission unit may include a plurality of sprockets and a chain. For another example, the power transmission unit may include a plurality of timing gears and a timing belt. For yet another example, the power transmission unit may have a plurality of gears meshing with each other.

[0082] Below, we will focus on explaining the structure consisting of a sprocket and a chain.

[0083] A power transmission unit (130, 140) according to one embodiment of the present invention may include a driving sprocket (130), a driven sprocket (140), and a control chain.

[0084] At this time, the interior of the control unit housing (110) may accommodate a driving sprocket (130) that is linked to the rotation of the control knob (120), a driven sprocket (140) that rotates in conjunction with the driving sprocket (130), and a control chain that connects the driving sprocket (130) and the driven sprocket (140).

[0085] For example, a driving sprocket (130) may be disposed on one longitudinal side inside the operating unit housing (110), and a driven sprocket (140) may be disposed on the other longitudinal side. Additionally, an operating chain may be disposed along the longitudinal direction inside the operating unit housing (110).

[0086] Meanwhile, the control unit housing (110) can accommodate a supply channel inside.

[0087]

[0088] The operating knob (120) can control the insertion part (200) by rotating it through the operation of the user. When the operating knob (120) is rotated by the operation of the user, the sprockets (130, 140) can rotate in conjunction with the rotation of the operating knob (120).

[0089] The operating knob (120) may be configured to include two or more knobs. For example, the operating knob (120) may be provided in a stacked form with a first knob (121) and a second knob (122) along the vertical direction. The first knob (121) and the second knob (122) are respectively connected to the first drive sprocket (131) and the second drive sprocket (132), which will be described later, and are configured to rotate independently of each other. The first knob (121) and the second knob (122) have a shape with multiple protruding teeth so that the operator can easily grip and rotate them.

[0090] Meanwhile, the first knob (121) can rotate independently while the second knob (122) remains stationary. Likewise, the second knob (122) can rotate independently while the first knob (121) remains stationary. The first knob (121) controls the vertical movement of the lighting unit (210). That is, when the first knob (121) is turned clockwise or counterclockwise, the end of the lighting unit (210) bends upward or downward accordingly. The second knob (122) controls the horizontal movement of the lighting unit (210). That is, when the second knob (122) is turned clockwise or counterclockwise, the end of the lighting unit (210) bends to the left or right accordingly.

[0091] Meanwhile, in another embodiment, the first knob (121) controls the left and right movement of the lighting unit (210), and the second knob (122) controls the up and down movement.

[0092] In this way, the rotation direction of the lighting unit (210) can be arbitrarily adjusted by operating the first knob (121) and the second knob (122). According to the embodiment, it may be necessary to fix the lighting unit (210) in a bent state 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 that they do not rotate, and accordingly, the end of the lighting unit (210) can also be maintained in a fixed state.

[0093] A first drive sprocket (131) and a second drive sprocket (132) are each mounted at 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. Additionally, an operating chain is provided that moves in engagement with each of the drive sprockets (130). The operating chains are responsible for the vertical and horizontal movement of the lighting and imaging unit (210), respectively, and can move independently of each other.

[0094] Specifically, a first knob shaft (126) is coupled inside the first knob (121) so that the first knob (121) and the first knob shaft (126) can rotate together. Additionally, a second knob shaft (127) is coupled inside 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).

[0095] Meanwhile, based on the case where the control unit housing (110) is placed closer to the ground than the control knob (120), the first knob (121) may be positioned above the second knob (122). Additionally, the fixed knob (123) may be positioned above the first knob (121).

[0096] Meanwhile, the power transmission unit (130, 140) may include a first power transmission unit (131, 141) and a second power transmission unit (132, 142). In this case, the second power transmission unit (132, 142) may be positioned above the first power transmission unit (131, 141). Specifically, the second drive sprocket (132) may be positioned above the first drive sprocket (131). That is, the second knob (122) and the second drive sprocket (132) may be positioned between the first knob (121) and the first drive sprocket (131).

[0097] The operating chain can connect the drive sprocket (130) and the driven sprocket (140). The operating chain can transmit the rotational force of the drive sprocket (130) to the driven sprocket (140). When the drive sprocket (130) rotates through the operating chain, the driven sprocket (140) can rotate in conjunction with it.

[0098] The operating chain 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).

[0099] At this time, the second driven sprocket (142) can be positioned above the first driven sprocket (141).

[0100] Therefore, when the first knob (121) is rotated by user operation, the first driving sprocket (131) and the first driven sprocket (141) can be rotated in conjunction. Additionally, when the second knob (122) is rotated by user operation, the second driving sprocket (132) and the second driven sprocket (142) can be rotated in conjunction.

[0101] Meanwhile, the control unit (100) may include a control unit plate (160). The control unit plate (160) may divide the interior of the control unit housing (110) vertically. For example, the control unit plate (160) may be formed in a flat plate shape and placed within the control unit housing (110). At this time, the driving sprocket (130), the driven sprocket (140), and the control chain may be placed above the control unit housing (110). Additionally, the driving gear (170) and the channel may be placed below the control unit housing (110).

[0102]

[0103] The driving gear (170) can be rotated 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).

[0104] Specifically, the first driven sprocket (141) may be spline-coupled with the first driving gear (171). Alternatively, the first driven sprocket (141) may be key-coupled with the first driving gear (171). For example, the first driven sprocket (141) may include a sprocket portion coupled to a control chain and a coupling shaft portion extending axially downward from the sprocket portion and coupled to the first driving gear (171). At this time, a key portion that is spline-coupled to the first driving gear (171) may be formed on the outer surface of the coupling shaft portion. Accordingly, when the first driven sprocket (141) rotates, the first driving gear (171) may also rotate in conjunction.

[0105] 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 coupled to the operating chain and a shaft coupling hole formed at the radial center of the sprocket portion. In this case, the shaft coupling hole may be formed as a non-circular hole to be key-coupled with the connecting shaft (173). Additionally, the second driving gear (172) may include a gear portion with gear teeth formed thereon and a shaft coupling hole formed at the radial center of the gear portion. Accordingly, the second driven sprocket (142) may 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) may also rotate in conjunction.

[0106] 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).

[0107]

[0108] Meanwhile, the control unit (100) may be equipped with a channel for providing air and water to the affected area during the procedure. For example, the channel may be a supply channel. In this case, the supply channel may be an air supply channel and / or a water supply channel. The air supply channel and the water supply channel have a roughly cylindrical shape and are hollow inside so that when combined with the illumination imaging unit (210), they are inserted into the interior of the illumination imaging unit (210) to ensure that water or air is stably supplied to the area of ​​the procedure or examination without leakage.

[0109] Meanwhile, a supply valve may be provided in the supply channel. The supply valve may be exposed to the outside of the operating unit housing (110). When the operator operates the supply valve, the air and water flowing into the insertion unit (200) through the supply channel can be switched with each other.

[0110] A connection terminal may be provided to be electrically connected to the lighting unit (210) so that data obtained by a camera, etc., provided at the end of the lighting unit (210) can be transmitted to an external device. For example, the connection terminal may be an HDMI terminal for transmitting voice and video.

[0111] The above channels and connection terminals may be positioned below the operating chain. For example, the channels and connection terminals may be accommodated within the operating unit housing (110) but positioned further from the operating knob (120) than the operating chain.

[0112] At this time, the area where the operation chain moves and the area where the channel and connection terminal are arranged can be separated by the operation plate (160). The channel of the operation part (100) can be connected to the channel (not shown) of the insertion part (200).

[0113] The operating part (100) includes a coupling part (190). The coupling part (190) can be detachably coupled to the connecting part (250) of the insertion part (200). The coupling part (190) can be coupled to the hook of the connecting part (250). Specifically, the coupling part (190) is formed on the outer surface of the operating part housing (110) and can receive the hook of the connecting part (250).

[0114] Meanwhile, a guide pin that guides the connection position with the connecting part (250) may be provided to protrude from the longitudinal end surface of the connecting part (190). Through this, the user can accurately connect the operating part (100) and the insertion part (200).

[0115] Meanwhile, a gear hole may be formed on the longitudinal end surface of the coupling portion (190). The gear hole may be positioned 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.

[0116] Additionally, a channel connection part may be provided on the longitudinal end surface of the coupling part (190). The longitudinal end of the channel may be positioned at the channel connection part. Through this, when the operating part (100) and the insertion part (200) are coupled, the channel can be connected to the channel of the insertion part (200).

[0117] Additionally, a connector capable of connecting a connection terminal may be provided on the longitudinal end surface of the coupling portion (190). The connector may be provided so that the connection terminal is connected.

[0118]

[0119] FIG. 3 shows a plan view illustrating the connection between a wire reel and a wire in an operating part according to an embodiment of the present invention, FIG. 4 shows an exploded perspective view illustrating the internal structure of an insertion part in an endoscope according to an embodiment of the present invention, FIG. 5 shows a perspective view illustrating an illumination imaging part in an insertion part according to an embodiment of the present invention, FIG. 6 shows a drawing illustrating an insertion tube in an endoscope according to an embodiment of the present invention, and FIG. 7 and FIG. 8 show drawings illustrating an illumination imaging part body in an endoscope according to an embodiment of the present invention.

[0120] Referring to FIGS. 3 to 8, an insertion part (200) of an endoscope according to one embodiment of the present invention is described as follows.

[0121] The insertion part (200) is detachably coupled to the operation part (100), and at least a portion is inserted into the human body to photograph the inside of the human body.

[0122] The insertion part (200) includes a lighting and imaging part (210), an insertion tube (220), a wire (230), and a connecting part (250). At this time, the lighting and imaging part (210) is positioned on one side in the longitudinal direction of the insertion part (200), and the connecting part (250) is positioned on the other side. Additionally, the lighting and imaging part (210) and the connecting part (250) can be connected by the insertion tube (220), and at least a portion of the wire (230) can pass from the connecting part (250) to the insertion tube (220).

[0123] The lighting and imaging unit (210) is inserted into the human body to irradiate light into the human body and can photograph the inside of the human body.

[0124] The lighting and shooting unit (210) includes a lighting and shooting unit body (211), a lighting module (212), and a shooting module (213).

[0125] The lighting and imaging unit body (211) forms the exterior of the lighting and imaging unit (210) and is configured to be inserted into the human body. For example, the lighting and imaging unit body (211) is formed in a cylindrical shape, and a lighting module (212) and an imaging module (213) are arranged on one side in the longitudinal direction.

[0126] Additionally, the other end of the lighting unit body (211) in the longitudinal direction may be open and connected to the insertion tube (220). Specifically, the lighting unit body (211) may be combined with the bending portion (221) of the insertion tube (220).

[0127] Meanwhile, a wire (230) is connected to the lighting unit body (211). Specifically, a wire passage hole (211a) through which the wire (230) passes can be formed in the lighting unit body (211).

[0128] A wire passage hole (211a) may be formed on the outer surface of the lighting unit body (211). At this time, the wire passage hole (211a) may be formed as a pair of two holes. Accordingly, the wire (230) can come out from the inside to the outside of the lighting unit body (211) through one hole, and can come in from the outside to the inside of the lighting unit body (211) through the other hole.

[0129] Therefore, in an embodiment of the present invention, since two wires are used, two pairs of wire passage holes (211a) can be formed. That is, four wire passage holes (211a) can be formed in the lighting unit body (211).

[0130] Additionally, according to an embodiment, a wire guide groove (211b) connecting a wire passage hole (211a) may be formed in the lighting unit body (211).

[0131] A wire guide groove (211b) may be formed on the outer surface of the lighting unit body (211). At this time, the wire guide groove (211b) may be formed in the shape of a groove connecting a pair of wire passage holes (211a). A wire (230) that has passed through a pair of wire passage holes (211a) may be received in the wire guide groove (211b).

[0132] With this configuration, the wire (230) can move along the wire guide groove (211b) on the outer surface of the lighting unit body (211). Therefore, there is an advantage that the wire (230) can move stably, making the bending operation accurate.

[0133] Meanwhile, according to an embodiment, the lighting unit body (211) can function as a heat dissipation chassis.

[0134] For example, the lighting and imaging unit body (211) may be a coil pipe made of spring material and may release heat generated from the lighting module and / or imaging module.

[0135] The lighting module (212) can be coupled to the end cap (217). The lighting module (212) can emit light. The lighting module (212) may be equipped with a lighting lens capable of emitting light by receiving power. For example, the lighting lens may be an LED (Light Emitting Diode).

[0136] Meanwhile, in this embodiment, a plurality of illumination lenses may be provided. Specifically, in this embodiment, an even number of illumination lenses may be provided. For example, a pair of illumination lenses may be arranged symmetrically. This has the effect of preventing the illuminance shining on an object at close range from becoming asymmetric and preventing gaps in illumination from occurring.

[0137] In this case, a pair of illumination lenses may have different Correlated Color Temperatures (CCTs). Through this, a target light wavelength distribution can be created.

[0138] Additionally, the lighting module (212) may further include a lighting support member that supports a pair of lighting lenses (212a). The lighting support member is formed in a flat plate shape, but the leading edge may be symmetrically extended in a pair and bent upward. A pair of lighting lenses (212a) may be coupled to the bent pair of extensions.

[0139] For example, the lighting support may be a flexible printed circuit board (PCB). An image sensor may be mounted on the flexible PCB. Since multiple lighting lenses are utilized as the lighting unit, not only is it easy to control the illuminance, but the amount of light irradiated can also be significantly increased compared to conventional halogen lamps, thereby further improving the clarity of the image obtained through the image sensor.

[0140] Meanwhile, the shooting module (213) can photograph the inside of the human body. The shooting module (213) can receive power to photograph images of the inside of the human body and transmit the captured image data. For example, the shooting module may include a camera (213a) and an image processing unit (213b). In this case, the camera (213a) may be placed at one end (front end) in the longitudinal direction of the lighting shooting unit (210), and the image processing unit (213b) may be combined with the camera (213a) to process images coming from the camera (213a).

[0141] Through this, the endoscope (1) of the present invention can irradiate light through the lighting module (212) while inserted into the human body and can photograph the inside of the human body through the imaging module (213).

[0142] A heat sink (214) may be placed inside the body (211) of the lighting and imaging unit. The heat sink (214) may be combined with the lighting module (212) and / or the imaging module (213).

[0143] 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.

[0144] The heat sink (214) is formed in a flat plate shape, and one end in the longitudinal direction (long axis direction) may be in contact with the lighting module (212). Accordingly, it can receive heat generated from the lighting module (212).

[0145] Meanwhile, a printed circuit board (218) may be in contact with the other side in the longitudinal direction of the heat sink (214). The printed circuit board (218) can control the lighting module (212) and / or the imaging module (213). A circuit capable of controlling the lighting module (212) and / or the imaging module (213) may be mounted on the printed circuit board (218). Through this, heat generated from the circuit can be transferred to the heat sink (214).

[0146] Meanwhile, the lighting unit (210) may further include a heat blocking plate (216) that is positioned on one side in the longitudinal direction of the lighting unit (210) and blocks heat generated from the lighting module (212).

[0147] The heat blocking plate (216) is coupled to the end cap (217) and can be positioned between the end cap (217) and the lighting module (212) along the longitudinal direction of the lighting unit (210).

[0148] The heat blocking plate (216) can prevent heat generated from the lighting module (212) from being transferred to the human body. At this time, the heat blocking plate (216) can be formed of a material through which light can pass.

[0149] An end cap (217) is provided at the longitudinal end (front end) of the lighting and imaging unit (210). The end cap (217) has a cylindrical structure and is coupled to the end of the insertion unit (200). At this time, a lighting module (212) and an imaging module (213) may be coupled to the end cap (217). Additionally, a heat blocking plate (216) may be coupled to the end cap (217).

[0150] The end cap (217) may be provided with light-transmitting windows at multiple points. The light-transmitting windows are made of glass or a plate made of a transparent material and have a structure capable of transmitting light irradiated from the lighting module (212) to the outside.

[0151] Meanwhile, the end cap (217) may have a plurality of channel receiving tubes into which a channel (240) is inserted. Each channel receiving tube has a cylindrical shape with a hollow interior and is formed to have an inner diameter corresponding to the outer diameter of each channel to be inserted. Additionally, an O-ring may be provided inside to prevent leakage of supplied water or air.

[0152] Meanwhile, the lighting and shooting unit (210) may be provided with a connection terminal. The connection terminal may be provided in correspondence with the connection terminal of the operating unit (100). That is, the operating unit (100) may be provided with a male terminal, and the insertion unit (200) may be provided with a female terminal.

[0153]

[0154] The insertion tube (220) connects the lighting unit (210) and the connecting unit (250) and can be bent according to the operation of the control unit (100).

[0155] Specifically, the insertion tube (220) can be bent according to the movement of the wire (230).

[0156] Meanwhile, the insertion tube (220) can accommodate multiple channels (240) and terminals inside.

[0157] The insertion tube (220) may include a bending part (221), an adapter (222), and a coil spring (223). In this embodiment, one end of the bending part (221) in the longitudinal direction may be connected to the adapter (222), and the other end in the longitudinal direction may be connected to the illumination / photography part (210).

[0158] The bending part (221) can be configured to bend according to the movement of the wire (230).

[0159] The bending section (221) includes a first bending member (2211) and a second bending member (2212) that rotate relative to each other. At this time, the bending section (221) may have a plurality of first bending members (2211) and second bending members (2212) arranged alternately. Furthermore, as the number of first bending members (2211) and second bending members (2212) increases, the total length of the bending section (221) may increase. Accordingly, the number of first bending members (2211) and second bending members (2212) can be adjusted according to the usage conditions of the endoscope (1) to select an appropriate length of the insertion tube (220).

[0160]

[0161] In this regard, FIG. 9 illustrates a drawing for explaining a first bending member in an endoscope according to an embodiment of the present invention, FIG. 10 illustrates a drawing for explaining a second bending member in an endoscope according to an embodiment of the present invention, FIG. 11 illustrates a drawing for explaining a state in which the first bending member and the second bending member are connected in an endoscope according to an embodiment of the present invention, and FIG. 12 illustrates a cross-sectional view of FIG. 11.

[0162] Referring to FIGS. 9 to 12, a first bending member (2211) and a second bending member (2212) according to an embodiment of the present invention are described as follows.

[0163] The first bending member (2211) and the second bending member (2212) may be provided to rotate relative to each other.

[0164] The first bending member (2211) includes a first bending member body (2211a), a concave portion (2211b), a wire penetration hole (2211c), and a detachment prevention projection (2211d).

[0165] The first bending member body (2211a) may be formed in an overall annular shape. At this time, the longitudinal thickness of the first bending member body (2211a) may change repeatedly 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.

[0166] Meanwhile, in this 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. Using such a material has the advantage of improving processability and reducing production costs.

[0167] At this time, a concave portion (2211b) may be formed in the first bending member body (2211a) so as to be rotated relative to the second bending member (2212).

[0168] Four concave portions (2211b) are formed in the first bending member body (2211a), and a pair may be formed at one end in the longitudinal direction of the first bending member body (2211a), and a pair may be formed at the other end in the longitudinal direction of the first bending member body (2211a). At this time, the pair formed at one end of the first bending member body (2211a) and the pair formed at the other end may be arranged alternately with a phase difference of 90 degrees from each other along the circumferential direction. That is, the pair of concave portions (2211b) formed at the end in the same direction may be arranged with a phase difference of 180 degrees along the circumferential direction, while the pair formed at the end in the other direction may be arranged with a phase difference of 90 degrees from each other.

[0169] The concave portion (2211b) may be formed by being sunken from the longitudinal end of the first bending member body (2211a). At this time, the concave portion (2211b) may be formed by being sunken in an arch shape having a predetermined curvature from the longitudinal end of the first bending member body (2211a).

[0170] The concave portion (2211b) can accommodate at least a portion of the convex portion (2212b) of the second bending member (2212) to be described later. Additionally, 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.

[0171] Accordingly, when the first bending member body (2211a) and the second bending member body (2212a) are combined, 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 combined, 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 it moves away from the concave portion (2211b) and the convex portion (2212b) along the circumferential direction.

[0172] Through this gap, a range can be provided in which the first bending member (2211) and the second bending member (2212) can be rotated relative to each other according to the movement of the wire (230).

[0173] Meanwhile, the radial thickness of the first bending member body (2211a) at the location where the concave portion (2211b) is formed may be increased. 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 the location where the concave portion (2211b) is formed may be formed to be smaller. That is, the first bending member body (2211a) may be formed in a shape in which the inner surface of the location where the concave portion (2211b) is formed protrudes radially inward.

[0174] In addition, a wire through-hole (2211c) may be formed along the longitudinal direction at the location where the concave portion (2211b) is formed. That is, the wire through-hole (2211c) may be a circular hole formed at a location protruding radially inward from the inner circumference of the first bending member body (2211a).

[0175] At this time, the wire (230) can pass through the wire penetration hole (2211c).

[0176] Meanwhile, in the present invention, a detachment prevention projection (2211d) is formed protrudingly at the location where the concave portion (2211b) is formed to prevent the detachment of the convex portion (2212b).

[0177] The anti-detachment projection (2211d) may be formed to protrude along the longitudinal direction from the concave portion (2211b). That is, the concave portion (2211b) is formed by being sunken along the longitudinal direction from the longitudinal end of the first bending member body (2211a), while the anti-detachment projection (2211d) is formed in a shape that protrudes along the longitudinal direction from the concave portion (2211b). At this time, the anti-detachment projection (2211d) may be formed at the radially outer end of the concave portion (2211b). Additionally, the radial thickness of the anti-detachment projection (2211d) may be thinner than the thickness of the first bending member body (2211a). Additionally, based on the length direction of the first bending member (2211), the length of the recessed portion (2211a) is greater than the length of the anti-detachment projection (2211d) protruding from the recessed portion (2211a).

[0178] Accordingly, the anti-detachment projection (2211d) may have a shape that covers a portion of the radially outer side of the concave portion (2211b).

[0179] With this configuration, the anti-detachment projection (2211d) can contact and support the outer surface of the convex portion (2212b). Accordingly, even if an external force is applied to dislodge the convex portion (2212b) outwardly in the direction of bending during the bending operation of the bending portion (221), the anti-detachment projection (2211d) can support the convex portion (2212b) to prevent dislodgement.

[0180] Therefore, according to the present invention, the first bending member (2211) and the second bending member (2212) are maintained in a connected state through the anti-detachment projection (2211d), thereby enabling accurate bending operation and preventing damage to the parts during operation.

[0181] The second bending member (2212) includes a second bending member body (2212a), a convex portion (2212b), and a wire through hole (2212c).

[0182] The second bending member body (2212a) may be formed in an annular shape overall. At this time, the longitudinal thickness of the second bending member body (2212a) may change repeatedly 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 along the circumferential direction from the location where the convex portion (2212b) is formed.

[0183] Meanwhile, in this 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. Using such a material has the advantage of improving processability and reducing production costs.

[0184] 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).

[0185] Four convex portions (2212b) are formed on the second bending member body (2212a), wherein a pair is formed at one end in the longitudinal direction of the second bending member body (2212a) and a pair is formed at the other end in the longitudinal direction of the second bending member body (2212a). At this time, the pair formed at one end of the second bending member body (2212a) and the pair formed at the other end may be arranged alternately with a phase difference of 90 degrees from each other along the circumferential direction. That is, the pair of convex portions (2212b) formed at the end in the same direction may be arranged with a phase difference of 180 degrees along the circumferential direction, while the pair formed at the end in the other direction may be arranged with a phase difference of 90 degrees from each other.

[0186] The convex portion (2212b) may be formed protruding from the longitudinal end of the second bending member body (2212a). At this time, the convex portion (2212b) may be formed corresponding to the shape of the concave portion (2211b). For example, the convex portion (2212b) may be formed protruding 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 recessed curvature of the concave portion (2211b) may be the same.

[0187] With this configuration, at least a portion of the convex portion (2212b) can be accommodated in the concave portion (2211b). Additionally, the convex portion (2212b) and the concave portion (2211b) can be rotated relative to each other while in surface contact.

[0188] Meanwhile, in this embodiment, the convex portion (2212b) may be formed in a stepped shape by cutting a portion of the outer side in the radial direction. That is, a stepped portion (2212d) in which the anti-detachment projection (2211d) is received may be formed in the convex portion (2212b). Through this, the connection position between the convex portion (2212b) and the anti-detachment projection (2211d) can be maintained more accurately.

[0189] Meanwhile, the radial thickness of the second bending member body (2212a) at the location where the convex portion (2212b) is formed may be increased. 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 the location 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 shape in which the inner surface at the location where the convex portion (2212b) is formed protrudes radially inward.

[0190] In addition, a wire through-hole (2212c) may be formed along the longitudinal direction at the location where the convex portion (2212b) is formed. That is, the wire through-hole (2212c) may be a circular hole formed at a location protruding radially inward from the inner circumference of the second bending member body (2212a).

[0191] At this time, the wire (230) can pass through the wire penetration hole (2212c).

[0192] Meanwhile, the inner surface of the convex portion (2212b) itself does not protrude inward in the radial direction and can be formed to be equal to the maximum inner diameter of the second bending member body (2212a). That is, the inner surface of the convex portion (2212b) does not protrude radially inward beyond the location where the wire penetration hole (2212c) is formed. Therefore, when looking at the inner surface of the second bending member (2212) as a whole, it has a uniform inner surface, but the inner surface at the location where the wire penetration hole (2212c) is formed has a shape that protrudes radially inward.

[0193]

[0194] Meanwhile, FIG. 13 is a cross-sectional view illustrating an adapter in an endoscope according to one embodiment of the present invention.

[0195] Referring to FIG. 13, one end of the adapter (222) in the longitudinal direction can be connected to the bending part (221). Additionally, the other end of the adapter (222) in the longitudinal direction can be connected to the connecting part (250).

[0196] The adapter (222) includes an adapter body (2221), a spring coupling part (2222), a wire receiving groove (2223), a wire penetration hole (2224), and a bending member connection part (2225).

[0197] The adapter body (2221) is formed in a cylindrical shape overall, and a spring coupling portion (2222) may be formed on the outer surface of the adapter body (2221). Additionally, a wire receiving groove (2223) may be formed along the longitudinal direction on the inner or outer surface of the adapter body (2221). Furthermore, a wire through-hole (2224) may be formed along the longitudinal direction in the adapter body (2221). Additionally, a bending member connection portion (2225) may be formed at the longitudinal end of the adapter body (2221).

[0198] The spring coupling portion (2222) may be coupled to the longitudinal end of the coil spring (2223). For example, the spring coupling portion (2222) may be in the form of a rib protruding along the circumferential direction from the outer surface of the adapter body (2221). Through this, the end of the coil spring (2223) may be caught and supported by the spring coupling portion (2222).

[0199] Accordingly, a coil spring (223) can be placed between the 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 adapters (222).

[0200] The wire receiving groove (2223) may be formed along the longitudinal direction on the inner or outer surface of the adapter body (2221). For example, four wire receiving grooves (2223) may be formed along the longitudinal direction on the inner surface of the adapter body (2221).

[0201] In this case, in the present invention, the longitudinal ends of each wire receiving groove (2223) may be formed at different positions relative to the longitudinal direction of the adapter body (2221). That is, the longitudinal depths formed in the adapter body (2221) of each wire receiving groove (2223) may be different from each other.

[0202] Additionally, at least a portion of the wire (230) may be received in the wire receiving groove (2223). Specifically, a coil pipe (231) that receives the wire (230) may be received in the wire receiving groove (2223). At this time, one longitudinal side of the coil pipe (231) may be received in the adapter (222), and the other longitudinal side of the coil pipe (231) may be exposed to the outside of the adapter (222). Accordingly, the user may visually recognize the exposed portion of the coil pipe (231).

[0203] Therefore, according to the present invention, the user can visually recognize the exposed length of the coil pipe (231) and distinguish the four wires (230) from each other.

[0204] Wire through-holes (2224) may be formed along the longitudinal direction of the adapter body (2221). Wire through-holes (2224) may be positioned at a location connected to the wire receiving groove (2223). At this time, wire through-holes (2224) may be formed to communicate with the wire receiving groove (2223). For example, four wire through-holes (2224) may be formed along the longitudinal direction of the adapter body (2221) to communicate with the wire receiving groove (2223), so that four wires (230) can pass through.

[0205] Accordingly, the wire (230) can be reciprocated longitudinally along the wire receiving groove (2223) and the wire through hole (2224) by the operation of the operating knob (120).

[0206] Meanwhile, the bending member connecting portion (2225) may be formed to be rotatably coupled to the bending portion (221). That is, the bending member connecting portion (2225) may have a corresponding convex or concave structure formed so as to be coupled to the concave portion (2211b) of the first bending member (2211) or the convex portion (2212b) of the second bending member (2212).

[0207] Meanwhile, the coil spring (223) may be positioned to surround the outer surface of the bending portion (221). That is, the coil spring (223) may be positioned to surround the outside of the outer surface 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 combined.

[0208] On the other hand, both longitudinal ends of the coil spring (223) can be connected to the adapter (222) and the lighting unit (221). The coil spring (223) can be elastically supported by the spring connection part (2222) of the adapter (222). Thus, the coil spring (223) can apply elastic force to restore the bending part (221) to its original position when it is bent according to the operation of the operating knob (120).

[0209] Although not illustrated, an insertion tube may be disposed on the other longitudinal side of the insertion tube (220). The insertion tube is formed in a bendable tube shape and allows a wire (230), a channel (not illustrated), and a terminal to pass through it. A coil pipe (231) may be provided inside the insertion tube to provide elasticity to the insertion tube.

[0210]

[0211] Meanwhile, the wire (230) receives the operating force of the operating knob (120) through the connecting part (250) and can bend the insertion tube (220) through linear reciprocating motion.

[0212] One end of the wire (230) in the longitudinal direction may be connected to the adapter (222) or the lighting unit (210), and the other end in the longitudinal direction may be connected to the wire reel (253). At this time, the wire (230) may pass through the wire through-hole of the adapter (222), the wire through-hole (2211c) of the first bending member (2211), and the wire through-hole (2212c) of the second bending member (2212).

[0213] Accordingly, the first bending member (2211) and the second bending member (2212) can be rotated relative to each other so that the gap between the first bending member (2211) and the second bending member (2212) narrows on the side where the wire (230) is pulled (lengthened). On the other hand, the first bending member (2211) and the second bending member (2212) can be rotated relative to each other so that the gap between the first bending member (2211) and the second bending member (2212) widens on the side where the wire (230) is unwound (lengthened). 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).

[0214] For example, four wires (230) may be provided, and two may form a pair and be connected to each other. Thus, if one of the pair of wires (230) is pulled, the other one can be released.

[0215] The insertion part (200) may be provided with a channel. The channel may be accommodated inside the insertion tube (220) and the connecting part housing (251). Specifically, the channel (240) may include a biopsy channel (241) and a supply channel.

[0216] One side of the biopsy channel (241) may be connected to the illumination imaging unit (210). The biopsy channel (241) may provide a path for a tool to move or for a collected specimen to flow through, for collecting tissues of a part of a living organism or organ. Meanwhile, a portion of the biopsy channel (241) may be branched to communicate with a biopsy insertion port into which a tool is inserted. The biopsy insertion port may be blocked by a biopsy cap (255), and the biopsy cap (255) may be removed when a tool is inserted.

[0217] The supply channel can provide air and water to the affected area during the procedure. At this time, the supply channel can supply air and / or water. The supply channel has a roughly cylindrical shape and is hollow inside so that it is inserted into the interior of the illumination unit (210) to ensure that water or air is stably supplied to the treatment or examination site without leakage.

[0218] The connecting part (250) is detachably coupled to the coupling 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).

[0219] One side of the connecting part housing (251) in the longitudinal direction is connected to the insertion tube (220), and the other side in the longitudinal direction can be detachably connected to the connecting part (190). At this time, one side in the longitudinal direction of the connecting part housing (251) can be connected to the other side in the longitudinal direction of the insertion tube (220), and the other side in the longitudinal direction of the connecting part housing (251) can be provided to be detachably connected to the connecting part (190).

[0220] The connecting part housing (251) may be formed in the shape of a square tube overall, but may be formed such that the diameter narrows toward one end (front end) in the longitudinal direction. As a result, the connecting part housing (251) may be formed in a shape such that one end in the longitudinal direction can be combined with the insertion tube of the insertion tube (220) and connected.

[0221] The other longitudinal side of the connecting part housing (251) may be provided to be coupled with the connecting part (190).

[0222] Specifically, at least one hook may be extended and formed at the other end in the longitudinal direction of the connecting part housing (251). At this time, the hook may be coupled to a coupling part (190) formed on the outer surface of the operating part housing (110).

[0223] At this time, according to the embodiment, a guide portion may be further formed in the connecting portion housing (251) to guide the coupling position with the coupling portion (190).

[0224] Meanwhile, a pin receiving groove for receiving a guide pin may be formed on the longitudinal end surface of the connecting part housing (251). Accordingly, the user can connect the coupling part (190) and the connecting part (250) in the correct position.

[0225] Meanwhile, a gear hole may be formed on the longitudinal end surface of the connecting part housing (251). The gear hole may be positioned so that at least a portion of the driven gear passes through it. At this time, when the operating part (100) is separated from the insertion part (200), at least a portion of the driven gear may be exposed to the outside.

[0226] Additionally, a channel connection part may be provided on the longitudinal end surface of the connecting part housing (251). The longitudinal end of the channel may be positioned at the channel connection part. Through this, when the operating part (100) and the insertion part (200) are combined, the supply channel of the operating part (100) and the supply channel of the insertion part (200) can be connected.

[0227] Additionally, a connector capable of connecting a connection terminal may be provided on the longitudinal end surface of the connecting part housing (251). Through this, when the operating part (100) and the insertion part (200) are combined, the connector of the operating part (100) and the connector of the insertion part (200) can be connected to each other.

[0228] As a result, the connecting housing (251) can be fitted together with the coupling part (190). At this time, the driving gear (171, 172) and the driven gear mesh with each other, the supply channel of the operating part (100) and the supply channel 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.

[0229] Although not shown, the driven gear can receive driving force from the driving gear (171, 172). When the operating part (100) and the insertion part (200) are combined, the driven gear can mesh with the driving gear (170).

[0230] Accordingly, when the driving gear (171) is rotated, the first driven gear rotates in conjunction, and when the second driving gear (172) is rotated, the second driven gear can rotate in conjunction.

[0231] Meanwhile, the first driven gear can rotate the first wire reel by receiving rotational force from the first driving gear (171). Additionally, the second driven gear can rotate the second wire reel (253b) by receiving rotational force from the second driving gear (172).

[0232] For example, the first driven gear can be formed integrally with the first wire reel. Additionally, the second driven gear and the second wire reel (253b) can be coupled to each other and rotated together.

[0233] Meanwhile, the wire reel can move the wire (230) while rotating in conjunction with the rotation of the driven gear (252). The wire reel (253) may include a first wire reel and a second wire reel (253b).

[0234] When the first driven gear is rotated, the reel body and the wire fixing part rotate together, allowing the wire (230) to be pushed or pulled and moved.

[0235] Additionally, the second wire reel (253b) may include a reel body formed in the shape of a cylinder or column, a wire fixing part disposed on the radially outer side of the reel body to which the wire (230) is fixedly coupled, and a key part formed protruding from the axial lower end of the reel body to which the shaft part of the second driven gear is coupled.

[0236] When the second driven gear is rotated, the second wire reel (253b) can move the wire (230) by pushing or pulling it.

[0237] Therefore, according to the present invention, when a user operates (turns) the first knob (121), the first driving sprocket (131) rotates together, and the first driven sprocket (141) rotates in conjunction with the first driving sprocket (131) by means of the first operating chain, and the first driving gear (171) rotates together with the first driven sprocket (141). Then, when the operating part (100) and the insertion part (200) are combined, the first driven gear engaged with the first driving gear (171) rotates in conjunction with the rotation of the first driving gear (171), and the first wire reel rotates integrally with the first driven gear, thereby moving the wire (230) to bend the insertion tube (220).

[0238] Additionally, when the user operates (turns) the second knob (122), the second drive sprocket (132) rotates together, and the second driven sprocket (142) rotates in conjunction with the second drive sprocket (132) by means of the second operation chain, and the second drive gear (172) rotates together with the second driven sprocket (142). Then, when the operation part (100) and the insertion part (200) are combined, the second driven gear engaged with the second drive gear (172) rotates in conjunction with the rotation of the second drive gear (172), and the second wire reel (253b) rotates integrally with the second driven gear, thereby moving the wire (230) to bend the insertion tube (220).

[0239]

[0240] Although the present invention has been described in detail through specific embodiments, this is for the purpose of specifically explaining the invention and is not limited thereto. It is evident that modifications or improvements to the present invention are possible by those skilled in the art within the technical scope of the invention.

[0241] All simple variations or modifications of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be clarified by the appended claims.

Claims

1. An insertion part having an illumination / photography part and an insertion tube; and An operating unit is provided with an operating knob and operates the insertion tube by bending it according to the operation of the operating knob; Includes, The above insertion tube is, A bending part that bends according to the operation of the above-mentioned operating part; Includes, The above bending part is, A first bending member having a concave portion formed therein; and A second bending member having a convex portion formed thereon and connected to the first bending member; Includes, The first bending member above is, Anti-detachment projection that contacts and supports the above-mentioned convex portion; An endoscope including 2. In Paragraph 1, The first bending member above is, An annular first bending member body in which the above-mentioned concave portion is formed; Includes, The above anti-detachment barrier is, An endoscope characterized by a protrusion formed along the longitudinal direction from the above-mentioned concave portion.

3. In Paragraph 1, The first bending member above is, An annular first bending member body in which the above-mentioned concave portion is formed; Includes, The above anti-detachment barrier is, An endoscope characterized by having a pair formed at each end in the longitudinal direction of the first bending member body.

4. In Paragraph 3, A pair of the above-mentioned anti-detachment tabs, An endoscope characterized by having positions formed facing each other along the circumferential direction at both ends of the first bending member body in the longitudinal direction.

5. In Paragraph 3, The above anti-detachment barrier is, An endoscope characterized by being arranged with a constant phase difference along the circumferential direction of the first bending member body.

6. In Paragraph 1, The second bending member is, A second bending member body having the convex portion formed protruding from the longitudinal end; Includes, The above convex portion is, An endoscope characterized by being received in the above-mentioned concave portion so as to be rotatable relative to it.

7. In Paragraph 1, The above insertion tube is, An adapter coupled to the first bending member or the second bending member and disposed at the longitudinal end of the bending portion; An endoscope that further includes 8. In Paragraph 7, The above insert is, A wire that bends the insertion tube through linear reciprocating motion; and A coil pipe that accommodates the above wire inside; Includes more, The above adapter is, An endoscope characterized by having a plurality of wire receiving grooves formed into which the above-mentioned coil pipe is inserted.

9. In Paragraph 8, The plurality of the above wire receiving grooves, An endoscope characterized by different longitudinal positions.

10. In Paragraph 1, The above insert is, A wire that bends the insertion tube through linear reciprocating motion; Includes, The above-mentioned lighting and imaging unit is, A lighting and imaging body coupled to the above bending part and to which the above wire is coupled; An endoscope including 11. In Paragraph 10, In the above-mentioned lighting and imaging body, An endoscope characterized by having a wire passage hole formed through which the above-mentioned wire passes.

12. In Paragraph 11, In the above-mentioned lighting and imaging body, An endoscope characterized by connecting the wire passage hole and forming a wire guide groove that accommodates the wire.

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