Endoscope

Abstract

The present invention relates to an endoscope comprising: an insertion unit having a lighting photographing unit and an insertion pipe; and an operation unit which has an operation knob and bends the insertion pipe according to the operation of the operation knob, the insertion pipe comprising a bending unit bent according to the operation of the operation unit. The bending unit comprises: bending sections injection-molded with a first material; and connectors injection-molded with a second material different from the first material and connecting the plurality of bending sections, and accordingly, it is possible to manufacture the bending unit capable of providing bending performance even at low costs.

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] Meanwhile, the bending section of conventional endoscopes requires both rigidity and flexibility during bending. To achieve this, conventional endoscopes feature joint structures made of metal, connected via welding or rivets to enable bending.

[0009] However, the joint structure formed of metal as described above is expensive to manufacture, and therefore has limitations in that it is not suitable for disposable endoscopes that are replaced after a single use.

[0010]

[0011] The present invention was created to improve the problems of conventional endoscopes as described above, and its purpose is to provide an endoscope that has both rigidity and flexibility, but whose bending part can be manufactured with a low-cost material.

[0012] In addition, the purpose is to provide an endoscope capable of manufacturing a bending part that can be produced at a low cost through a simple process.

[0013]

[0014] In order to achieve the above-described object, the endoscope according to the present invention comprises: an insertion section having an illumination photographing section and an insertion tube; and an operation section having an operation knob and bending the insertion tube according to an operation of the operation knob; wherein the insertion tube includes a bending section that bends according to an operation of the operation section; and wherein the bending section includes a bending section injection-molded from a first material; and a connecting section injection-molded from a second material different from the first material and connecting a plurality of the bending sections.

[0015] At this time, the bending section can be formed into a ring shape.

[0016] At this time, the connecting portions may be formed in pairs at each of the longitudinal ends of the bending section.

[0017] Additionally, the connecting portion may be arranged with a constant phase difference along the circumferential direction of the bending section.

[0018] With this configuration, the plurality of bending sections can be rotated relative to the connecting portion about the axis.

[0019] Meanwhile, the first material may be a polycarbonate series material.

[0020] Additionally, the second material may be a polyurethane-based material. For example, the second material may be thermoplastic polyurethane.

[0021] Meanwhile, the above bending section and the above connecting portion can be formed integrally.

[0022] At this time, the bending section and the connecting portion can be formed by injection molding simultaneously.

[0023] Meanwhile, inside the above bending section, a wire that moves back and forth according to the operation of the operation knob can pass through.

[0024] At this time, the first material may have greater rigidity than the second material.

[0025] Additionally, the second material may have greater flexibility than the first material.

[0026]

[0027] As described above, the endoscope according to the present invention has a bending section made of a polycarbonate series having rigidity and a connecting section made of a urethane series having flexibility, thereby enabling the bending section to be manufactured at a low cost.

[0028] Additionally, since the bending part is manufactured by injecting two types of materials at once using one mold, it has the effect of manufacturing the bending part at a low cost.

[0029]

[0030] FIG. 1 is a perspective view illustrating an endoscope according to one embodiment of the present invention.

[0031] FIG. 2 is a perspective view for explaining the attachment / detachment relationship between the operating unit and the insertion unit in an endoscope according to one embodiment of the present invention.

[0032] Figure 3 is a plan view of Figure 2.

[0033] FIG. 4 is a drawing for explaining a method of coupling a first coupling part and a second coupling part in an endoscope according to one embodiment of the present invention.

[0034] Figure 5 is an enlarged view of Figure 4 viewed from a different angle.

[0035] FIG. 6 is a drawing for explaining a state in which a first coupling portion and a second coupling portion are coupled in an endoscope according to one embodiment of the present invention.

[0036] FIGS. 7 to 13 are drawings for explaining a structure for guiding the initial position of a wire frame in an endoscope according to one embodiment of the present invention.

[0037] Figure 14 is a perspective view of Figure 2 viewed from a different angle.

[0038] Fig. 15 is a perspective view for explaining an illumination photographing unit in an endoscope according to one embodiment of the present invention.

[0039] Fig. 16 is a perspective view for explaining the internal structure of an illumination photographing unit in an endoscope according to one embodiment of the present invention.

[0040] FIG. 17 is a drawing for explaining a heat sink in an endoscope according to one embodiment of the present invention.

[0041] FIG. 18 and FIG. 19 are drawings for explaining a bending portion in an endoscope according to one embodiment of the present invention.

[0042]

[0043] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0044] 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.

[0045] 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."

[0046] The term "and / or" may include any combination of multiple related listed items or any one of multiple related listed items.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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, such as those defined in the present application, 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.

[0051] 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.

[0052]

[0053] FIG. 1 is a perspective view illustrating an endoscope according to one embodiment of the present invention, FIG. 2 is a perspective view illustrating a connection / detachment relationship between an operating unit and an insertion unit in an endoscope according to one embodiment of the present invention, and FIG. 3 is a plan view of FIG. 2.

[0054] Referring to FIGS. 1 to 3, 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) can be detachably coupled to each other by means of coupling units (150, 250). At this time, the coupling units (150, 250) include a first coupling unit (150) provided to the operating unit (100) and a second coupling unit (250) provided to the insertion unit (200).

[0055] In the present invention, the coupling portion (150, 250) converts the rotational motion of the dial (152) into linear motion by means of a pinion gear (153) and a rack gear (154), and accordingly, the coupling plates (155, 255) provided in the operating portion (100) and the insertion portion (200) are configured to be coupled to each other. At this time, the coupling plates (155, 255) include a first coupling plate (155) provided in the operating portion (100) and a second coupling plate (255) provided in the insertion portion (200).

[0056] Meanwhile, in the present invention, the connection of the wires (130, 230) can be made by wire frames (156, 256). That is, the wire (130) includes a manipulation wire (130) provided in the manipulation unit (100) and a bending wire (230) provided in the insertion unit (200), and these are respectively connected to a first wire frame (156) provided in the manipulation unit and a second wire frame (256) provided in the insertion unit (200). At this time, the first wire frame (156) and the second wire frame (256) are connected to each other in a detachable manner, and when connected, can be moved linearly back and forth within the connecting plates (155, 255).

[0057] This will be described in more detail later.

[0058]

[0059] 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.

[0060] 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.

[0061]

[0062] Although not shown, the endoscope (1) according to one embodiment of the present invention may further include a connector adapter and a universal cord.

[0063] 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.

[0064]

[0065] The operating unit (100) includes an operating unit housing (110), an operating knob (120), an operating wire (130), and a first connecting unit (150).

[0066] The operating unit housing (110) can accommodate an operating wire (130) for driving the insertion unit (200) inside while providing a structure for the operator to grasp.

[0067] Specifically, an operation knob (120) is arranged on the upper part of the operation unit housing (110), a first coupling part (150) is arranged on one side in the longitudinal direction of the operation knob (120), and a sprocket and a chain and an operation wire (130) that are linked to the rotation of the operation knob (120) are accommodated inside the operation unit housing (110), and channels and the like can be additionally accommodated.

[0068]

[0069] The operating knob (120) can control the insertion part (200) by rotating according to the operation of the user. The operating knob (120) can be configured to include two or more knobs. For example, the operating knob (120) can 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 the first sprocket and the second sprocket, 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 form in which multiple teeth protrude so that the operator can easily grip and rotate them.

[0070] 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.

[0071] 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 sprocket and the second sprocket are fixed so as not to rotate, and accordingly, the end of the lighting photographing unit (210) is also maintained in a fixed state.

[0072] Although not shown, two sprockets 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). In addition, a chain is provided that moves in conjunction with each of the sprockets. The chains are responsible for the up-and-down movement and left-right movement of the lighting photographing unit (210), respectively, and they can move independently of each other.

[0073] The above chain is connected at both ends to a manipulation wire (130). The manipulation wire (130) is guided to move through a guide structure formed inside the manipulation unit housing (110).

[0074] The manipulation wire (130) is coupled to the first coupling portion (150). Specifically, the manipulation wire (130) is coupled by the first wire frame (156) of the first coupling portion (150). The first wire frame (156) is slidably mounted within a limited range of the first coupling plate (155).

[0075] Meanwhile, the first wire frame (156) is coupled with the second wire frame (256) of the insertion portion (200), and accordingly, the manipulation wire (130) can be connected to the bending wire (230).

[0076] Accordingly, the manipulation wire (130) can bend the insertion tube (220) according to the manipulation of the manipulation knob (120).

[0077] Meanwhile, Fig. 14 shows a perspective view of Fig. 2 from a different angle.

[0078] Referring to Fig. 14, the operating unit (100) may be provided with a channel (140) for supplying air and water to the affected area during the procedure. For example, the channel (140) may be a supply channel and a suction channel. At this time, 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 substantially cylindrical shape and are hollow inside, so that when combined with the lighting photographing unit (210), they are inserted into the interior of the lighting photographing unit (210) so that water or air, etc., can be stably supplied to the treatment or examination area without leakage.

[0079] Meanwhile, although not shown, the operation unit (100) may further be equipped with a connection terminal. The connection terminal may be electrically connected to the lighting and photography unit (210) so that data obtained by a camera, etc., provided at the end of the lighting and photography unit (210) can be transmitted to an external device. For example, the connection terminal may be an HDMI terminal for transmitting audio and video.

[0080] The above channel (140) and connection terminal may be positioned lower than the wires (130, 230). For example, the channel (140) and connection terminal may be accommodated in a space formed by the operation unit housing (110), the first coupling body (151), and the second coupling body (251), but may be positioned further from the operation knob (120) than the operation wire (130).

[0081] At this time, the area where the manipulation wire (130) and the bending wire (230) move and the area where the channel (140) and the connection terminal are arranged can be divided by the support plate (160). The support plate (160) can partition the internal space of the manipulation unit (100) vertically, and has a channel support part (161) that is coupled with the channel (140) to support the channel (140), so that when the manipulation unit (100) and the insertion part (200) are coupled, the channel (140) can be guided to be connected in the correct position. That is, when the first coupling part (150) and the second coupling part (250) are coupled, the channel (140) of the manipulation unit (100) can be connected with the channel (240) of the insertion part (200).

[0082] The channel support member (161) may be formed to extend downward from the lower surface of the support plate (160), and a circular hole may be formed so that the channel (140) may pass through and be supported. At this time, the number of holes may be formed corresponding to the number of channels (140).

[0083]

[0084] Meanwhile, FIG. 4 is a drawing for explaining a method of coupling a first coupling part and a second coupling part in an endoscope according to an embodiment of the present invention, FIG. 5 is an enlarged view of FIG. 4 viewed from a different angle, FIG. 6 is a drawing for explaining a state in which the first coupling part and the second coupling part are coupled in an endoscope according to an embodiment of the present invention, and FIGS. 7 to 13 are drawings for explaining a structure for guiding an initial position of a wire frame in an endoscope according to an embodiment of the present invention.

[0085] Referring to FIGS. 4 to 13, the first connecting portion (150) is described as follows.

[0086] A first coupling part (150) may be arranged on one end of the operating unit housing (110). The first coupling part (150) may be detachably coupled to the insertion part (200) by manipulation by the operator (user).

[0087] Specifically, the first coupling part (150) includes a first coupling part body (151), a dial (152), a pinion gear (153), a rack gear (154), and a first coupling plate (155).

[0088] The first coupling body (151) is provided to be engaged with and coupled to the second coupling body (250) of the insertion part (200). For example, the first coupling body (151) may be in the form of a plate that surrounds three surfaces. As another example, the first coupling body (151) may be in the form of a pair of plates that extend from the operating part housing (110) toward the insertion part (200). Accordingly, the first coupling body (151) may be coupled with the second coupling body (251) of the second coupling part (250).

[0089] As a result, the first coupling body (151) can be fitted into the second coupling body (251).

[0090] The dial (152) may be provided so that the user can grasp and rotate it. The dial (152) may be rotatably coupled to the operating unit housing (110).

[0091] Specifically, the dial (152) may be exposed on the outside of the operating unit housing (110). For example, the dial (152) may include a rotating plate in the shape of a disk and a grip portion that protrudes from the rotating plate in the shape of a rib so that the user can hold and turn it.

[0092] The pinion gear (153) is placed inside the first coupling body (151) and can rotate in conjunction with the rotation of the dial (152).

[0093] Meanwhile, the pinion gear (153) may be connected to the dial (152). The pinion gear (153) may be connected to the dial (152) by passing through the first coupling body (151). For example, the pinion gear (153) and the dial (152) may be formed integrally.

[0094] Gear teeth are formed on the outer surface of the pinion gear (153), and can mesh with a rack gear (154) to be described later. At this time, the pinion gear (153) can mesh with a pair of rack gears (154). The pair of rack gears (154) can be arranged at positions facing each other with respect to the pinion gear (153).

[0095] The rack gear (154) meshes with the pinion gear (153) and can move linearly according to the rotation of the pinion gear (153). At this time, a pair of rack gears (154) facing each other can move linearly in opposite directions according to the rotation of the pinion gear (153).

[0096] A pair of rack gears (154) may be arranged between the first coupling bodies (151) formed as a pair. At this time, the pair of rack gears (154) may be arranged along a direction intersecting the forming direction of the first coupling body (151), and may be linearly reciprocated along a direction intersecting the forming direction of the first coupling body (151).

[0097] A pair of rack gears (154) can each be coupled with a first coupling plate (155). The first coupling plate (155) can be formed along a direction intersecting the longitudinal direction of the rack gear (154).

[0098] The first coupling plate (155) may be placed between a pair of surfaces facing each other among the first coupling body (151). In addition, the first coupling plate (155) may be placed between a pair of second coupling bodies (251). Meanwhile, the first coupling plate (155) may be placed on the inside of the second coupling body (251), and may be placed at a position facing the second coupling body (251).

[0099] Additionally, the first coupling plate (155) can be positioned facing the second coupling plate (255). The first coupling plate (155) can be moved together with the rack gear (154) according to the movement of the rack gear (154) and coupled with the second coupling plate (255).

[0100] For example, the first coupling plate (155) may be formed in the shape of a square plate having a predetermined thickness. At this time, a fixing portion (155a) may be formed on the first coupling plate (155) to fix the coupling with the second coupling plate (255). For example, the fixing portion (155a) may be formed in the shape of a hole and may be coupled with a fixing portion (255a) in the shape of a protrusion formed on the second coupling plate (255).

[0101] Meanwhile, a first wire frame (156) may be arranged on the first coupling plate (155). The first wire frame (156) may be coupled to the first coupling plate (155) so as to enable linear reciprocating movement. For example, a guide groove may be formed on the first coupling plate (155) to guide linear movement of the first wire frame (156), and the first wire frame (156) may be arranged in the guide groove.

[0102] Meanwhile, a manipulation wire (130) is coupled to the first wire frame (156). For example, the first wire frame (156) may be provided with a manipulation wire (130) coupled to one side in the longitudinal direction and capable of linear reciprocating movement along the longitudinal direction.

[0103] Meanwhile, the first wire frame (156) arranged on the first coupling plate (155) can be coupled with the second wire frame (256) arranged on the second coupling plate (255). For example, the first wire frame (156) can have a frame coupling portion (156b) formed on the other side in the longitudinal direction. The frame coupling portion (156b) can have a shape in which a plurality of ribs and grooves are alternately formed. The frame coupling portion (156) can be formed in a shape corresponding to the frame coupling portion (256b) of the second wire frame (256). That is, the first wire frame (156) and the second wire frame (256) can be coupled in an interlocked state.

[0104] The first wire frame (156) can be placed between the first coupling plate (155) and the second coupling plate (255) while being coupled to the second wire frame (256). Accordingly, the first wire frame (156) and the second wire frame (256) can reciprocate linearly along the longitudinal direction of the endoscope (1) while being coupled to each other.

[0105] Through this, the manipulation wire (130) coupled to the first wire frame (156) and the bending wire (230) coupled to the second wire frame (256) can move in conjunction with each other, and the insertion tube (230) can be bent according to the operation of the manipulation knob (120).

[0106] Meanwhile, the first coupling plate (155) may further be provided with a lock pin (155b), a spring (155c), and a lock holder (155d).

[0107] The locking pin (155b) is placed on the first coupling plate (155) and can be accommodated in a fixing groove (156a) formed on the first wire frame (156) by reciprocating movement. The locking pin (155b) may include a head portion accommodated in a locking holder (155d) to be described later and a pin portion that passes through the locking holder (155d) and is accommodated in the fixing groove (156a). At this time, the head portion may be formed in a shape having a larger diameter than the pin portion. Therefore, the movement range of the locking pin (155b) may be limited by the locking holder (155d).

[0108] Meanwhile, the locking pin (155b) can be pressed toward the first wire frame (156) via the spring (155c). Specifically, the head of the locking pin (155b) can come into contact with one end of the spring (155c). Accordingly, the locking pin (155b) can be elastically supported by the spring (155c).

[0109] The other end of the spring (155c) can be fixed to the first connecting body (151).

[0110] The lock holder (155d) is detachably coupled to the first coupling plate (155) and can accommodate a lock pin (155b) so as to be reciprocally movable.

[0111] The lock holder (155d) is coupled with the lock lever (155e) and can be reciprocally moved by the operation of the lock lever (155e). At this time, the lock holder (155d) can be detachably coupled to the first coupling plate (155) according to the operation of the lock lever (155e).

[0112] The lock holder (155d) may be formed to accommodate a lock pin (155b) therein. For example, the lock holder (155d) may be formed in a cylindrical shape, with one longitudinal side formed to correspond to the size of the head portion of the lock pin (155b), and the other longitudinal side formed to correspond to the size of the pin portion of the lock pin (155b). That is, one longitudinal side of the lock holder (155d) may be formed to be larger than the diameter of the head portion, and the other longitudinal side may be formed to be smaller than the diameter of the head portion but larger than the diameter of the pin portion.

[0113] Accordingly, the pin portion of the lock pin (155b) can pass through the lock holder (155d) and be accommodated in the fixing groove (156a) of the first wire frame (156).

[0114] For example, a pair of lock holders (155d) may be provided, and a lever coupling portion that is coupled with a lock lever (155e) may be provided between the pair of lock holders (155d). The lever coupling portion (155e) may be formed in the shape of a long hole, and one side of the lock lever (155e) may be coupled thereto.

[0115] Meanwhile, one side of the lock lever (155e) may be coupled with the lock holder (155d), while the other side may be exposed to the outside of the first coupling body (151). Accordingly, the user may hold and operate the lock lever (155e).

[0116] Meanwhile, a fixing groove (156a) may be formed in the first wire frame (156). The fixing groove (156a) may be formed on the opposite side of the side where the frame connecting portion (156b) is formed. That is, the frame connecting portion (156b) may be formed on the side facing the second wire frame (256), and the fixing groove (256a) may be formed on the opposite side.

[0117] The fixed groove (156a) can accommodate the locking pin (155b) according to the movement of the first wire frame (156). That is, when the first wire frame (156) is placed at a preset initial position, the fixed groove (156a) can be placed to face the locking pin (155b). At this time, when the user operates the locking lever (155e), the locking pin (155b) can move along the locking holder (155d), pass through the first coupling plate (155), and be inserted into the fixed groove (156a).

[0118] Therefore, according to the present invention, after replacing the insertion part (200), the user can turn the operation knob (120) while operating the lock lever (155e), and accordingly, the first wire frame (156) can move linearly (slide) to find the position where the lock pin (155b) and the fixing groove (156a) are combined.

[0119] As a result, the present invention has the effect of finding the initial position of the operating wire (130) and maintaining it after replacing the insertion part (200).

[0120]

[0121] 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.

[0122] The insertion unit (200) includes a lighting photographing unit (210), an insertion tube (220), a bending wire (230), and a second coupling unit (250). At this time, the lighting photographing unit (210) is arranged on one side in the longitudinal direction of the insertion unit (200), and the second coupling unit (250) is arranged on the other side. In addition, the lighting photographing unit (210) and the second coupling unit (250) can be connected by the insertion tube (220), and at least a portion of the bending wire (230) can pass from the second coupling unit (250) to the insertion tube (220).

[0123]

[0124] Meanwhile, FIG. 15 is a perspective view illustrating an illumination photographing unit in an endoscope according to one embodiment of the present invention, FIG. 16 is a perspective view illustrating an internal structure of an illumination photographing unit in an endoscope according to one embodiment of the present invention, and FIG. 17 is a drawing illustrating a heat sink in an endoscope according to one embodiment of the present invention.

[0125] The lighting photography section is described below with reference to Figures 15 to 17.

[0126] 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.

[0127] The lighting shooting unit (210) includes a lighting shooting unit body (211), a lighting module (212), and a shooting module (213).

[0128] 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).

[0129] 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 (212a) that can receive power and irradiate light. For example, the lighting lens (212) can be an LED (Light Emitting Diode).

[0130] Meanwhile, in the present embodiment, multiple illumination lenses (212a) may be provided. Specifically, an even number of illumination lenses (212a) may be provided in the present embodiment. For example, a pair of illumination lenses (212a) may be arranged symmetrically along the axis. This prevents asymmetry in the illumination reflected on an object at close range and prevents gaps in the illumination.

[0131] At this time, in this embodiment, a pair of lighting lenses (212a) may be symmetrically arranged with respect to the photographing module (213). That is, in this embodiment, a pair of lighting lenses (212a) may be symmetrically arranged, and the photographing module (213) may be arranged on the axis of symmetry.

[0132] At this time, a pair of lighting lenses (212a) may have different correlated color temperatures (CCT). Through this, a target wavelength distribution of light can be created.

[0133] In addition, the lighting module (212) may further include a lighting support member (212b) that supports a pair of lighting lenses (212a). The lighting support member (212b) 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 (212a) may be coupled to the pair of bent extension members.

[0134] For example, the lighting support member (212b) may be a flexible printed circuit board (PCB). An image sensor may be mounted on the flexible PCB. By utilizing multiple lighting lenses (212a) as the lighting member, not only is it easy to control the illuminance, but the amount of light emitted can be significantly increased compared to conventional halogen lamps, etc., thereby further improving the clarity of the image obtained through the image sensor.

[0135] 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 (213) to process images received from the camera.

[0136] 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.

[0137] 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).

[0138] The heat sink (214) includes a heat sink body (214a), a lighting contact portion (214b), a shooting module receiving hole (214c), and a heat transfer portion (214d).

[0139] A heat sink body (214a) may be provided to transfer heat. The heat sink body (214a) may be formed of a material capable of transferring heat. For example, the heat sink body (214a) may be formed of a metal material.

[0140] The heat sink body (214a) is formed in a flat shape, and one end in the longitudinal direction (long axis direction) is connected to the lighting contact part (214b), and a heat transfer part (214d) is connected to both sides in the width direction (short axis direction), and a shooting module receiving hole (214c) can be formed inside.

[0141] The lighting contact portion (214b) is formed to extend from one end of the longitudinal direction of the heat sink body (214a) and can be in contact with the lighting module (212). The lighting contact portion (214b) can be formed to correspond to the shape of the lighting support portion (212b). For example, the lighting contact portion (214b) can be formed to extend from the longitudinal end of the heat sink body (214a) and then be formed to be bent and extended upward. Accordingly, the lighting contact portion (214b) can be in contact with the lighting support portion (212b). Through this, the heat generated in the lighting module (212) can be transferred to the heat sink (214) through the lighting contact portion (214b).

[0142] The photographing module receiving hole (214c) is formed in the heat sink body, and the photographing module (213) can be received therein so as to be penetrable. For example, the photographing module receiving hole (214c) can be formed in the shape of a rectangular hole, and a part of the image processing unit (213b) can pass therethrough, and a part of the image processing unit (213b) can be in contact therewith. Through this, heat generated in the photographing module (213) can be transferred to the heat sink (214).

[0143] 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).

[0144] The heat transfer portion (214d) may be formed to extend from both ends in the width direction (short axis direction) of the heat sink body (214a). At this time, the width of the heat sink body (214a) is smaller than the diameter of the heat sink chassis (215), and the combined width of the heat sink body (214a) and the heat transfer portion (214d) may be equal to or slightly larger than the diameter of the heat sink chassis (215). Therefore, the heat transfer portion (214d) may be in contact with the heat sink chassis (215). Accordingly, the heat of the heat transfer portion (214d) may be transferred to the heat sink chassis (215).

[0145] The heat dissipation chassis (215) is provided to surround the outer surface of the lighting and photography body (211), and can be in contact with the heat dissipation plate (214) to disperse the heat of the lighting module (212) and / or the photography module (213).

[0146] For example, the heat dissipation chassis (215) may be a coil pipe made of spring material and may dissipate heat generated from the lighting module (212) and / or the shooting module (213).

[0147] Meanwhile, in another embodiment of the present invention, the heat dissipation chassis (215) and the lighting photography body (211) may be formed integrally.

[0148] Meanwhile, the lighting photographing unit (210) may further include a heat blocking plate (216) that is arranged on one side of the length of the lighting photographing unit (210) and blocks heat generated from the lighting module (212).

[0149] The heat shield (216) is coupled to the end cap (217) and can be placed between the end cap (217) and the lighting module (212) along the length direction of the lighting photographing unit (210).

[0150] The heat shield (216) may include a shield body (216a) formed in a semicircular shape, a lighting cover part (216b) symmetrically arranged on the shield body (216a) and arranged to face the lighting module (212), and a camera cover part (216c) arranged on the symmetrical axis of the pair of lighting cover parts (216b) and arranged at a position facing the photographing module (213).

[0151] The heat blocking plate (216) can prevent heat generated from the lighting module (212) from being transmitted to the human body. At this time, the heat blocking plate (216) can be formed of a material that allows light to pass through.

[0152] 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, a lighting module (212) and a photographing module (213) can be coupled to the end cap (217). In addition, a heat shielding plate (216) can be coupled to the end cap (217).

[0153] The end cap (217) may be provided with a plurality of light-emitting windows. The light-emitting windows are made of a glass or transparent material plate and have a structure capable of transmitting light emitted from the lighting module (212) to the outside.

[0154] Meanwhile, the end cap (217) may be formed with a plurality of channel receiving tubes into which channels (240) 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 (140) to be inserted. In addition, an O-ring may be provided inside to prevent leakage of supplied water or air, etc.

[0155] 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.

[0156]

[0157] FIGS. 18 and 19 illustrate drawings for explaining a bending portion in an endoscope according to one embodiment of the present invention.

[0158] Referring to FIGS. 18 and 19, the bending structure of an endoscope according to one embodiment of the present invention is described as follows.

[0159] The insertion tube (220) connects the lighting photographing unit (210) and the second connecting unit (250), and can be bent according to the operation of the operating unit (100).

[0160] Specifically, the insertion tube (220) can be bent according to the movement of the bending wire (230).

[0161] Meanwhile, the insertion tube (220) can accommodate multiple channels (240) and terminals inside.

[0162] The insertion tube (220) may include a bending portion (221, 222) and an insertion tube (224).

[0163] The bending portion (221, 222) may be configured to bend according to the movement of the bending wire (230). The bending portion (221, 222) may be configured to bend by the reciprocating movement of the bending wire (230) that moves according to the operation of the operating portion (100).

[0164] The bending section (221, 222) includes a plurality of bending sections (221) that rotate relative to each other and a connecting section (222) that connects the plurality of bending sections (221).

[0165] At this time, the bending section (221) and the connecting portion (222) may be formed of different materials. Specifically, the bending section (221) may be formed of a first material, and the connecting portion (222) may be formed of a second material different from the first material.

[0166] For example, the first material may be a polycarbonate (PC) series material. Polycarbonate (PC) has the advantage of excellent mechanical strength.

[0167] Additionally, the second material may be a polyurethane (PU)-based material. For example, the second material may be thermoplastic polyurethane (TPU). Polyurethane (PU) has the advantages of high durability and flexibility.

[0168] That is, in the present invention, the bending section (221) can be formed from a material with high rigidity, and the connecting portion (222) can be formed from a material with high flexibility.

[0169] Meanwhile, the bending section (221) may be formed in a ring shape. Specifically, the bending section (221) may be formed in a ring shape having a predetermined thickness in the radial direction and a predetermined length in the axial direction. In this case, the axial length of the bending section (221) may be greater than the radial thickness. Therefore, the bending section (221) may also be referred to as a cylindrical shape having a predetermined length.

[0170] A plurality of bending sections (221) are arranged along the axial direction, and the plurality of bending sections (221) can be connected to each other by a connecting portion (222). That is, when no external force is applied, the plurality of bending sections (221) can be arranged in a row on the same axis, and the internal spaces of the plurality of bending sections (221) can be arranged to be in communication with each other. Through this, a plurality of bending wires (230), channels (240), and terminals can be arranged to penetrate the interior of the plurality of bending sections (221).

[0171] Meanwhile, a pair of connecting portions (222) can be formed at each of the longitudinal ends of the bending section (221).

[0172] Four connecting portions (222) may be formed in one bending section (221), and a pair of connecting portions (222) may be formed at one longitudinal end of each bending section (221), and a pair of connecting portions (222) may be formed at the other longitudinal end.

[0173] At this time, the connecting portions (222) may be arranged with a constant phase difference along the circumferential direction of the bending section (221). For example, a pair formed at one end of the bending section (221) and a pair formed at the other end may be arranged alternately with a phase difference of 90 degrees along the circumferential direction. That is, the connecting portions (222) may be arranged with a phase difference of 180 degrees along the circumferential direction for a pair formed at an end in the same direction, but with a phase difference of 90 degrees from a pair formed at an end in the other direction.

[0174] The connecting portion (222) can be a rotation axis of the bending section (221). In the present invention, the rigidity of the bending section (221) formed of the first material is greater than the rigidity of the connecting portion (222) formed of the second material. In addition, the radial thickness and the axial length of the bending section (221) are greater than those of the connecting portion (222). Therefore, when an external force is applied to a plurality of bending sections (221) due to movement of the bending wire (230), etc., deformation does not occur in the bending section (221) having relatively high rigidity, and elastic deformation may occur in the connecting portion (222) having relatively low rigidity and high flexibility. Therefore, when an external force is applied to the bending portions (221, 222), the connecting portion (222) may bend and the bending sections (221) may rotate relative to each other.

[0175] Accordingly, the plurality of bending sections (221) can be rotated relative to the connecting portion (222) with the bending operation of the bending portions (221, 222) being implemented.

[0176] Therefore, according to the present invention, it is possible to manufacture an insertion tube (220) capable of bending operation at low cost by having a bending section (221, 222) made of a polycarbonate series having rigidity and a connecting section (222) made of a urethane series having flexibility.

[0177]

[0178] Meanwhile, conventional endoscopes were manufactured by producing multiple joint structures made of metal and connecting them using welding or rivets to produce the bending part.

[0179] However, since the joint structure formed of metal as described above is expensive to manufacture, it has limitations that make it unsuitable for use in disposable endoscopes that are replaced after a single use.

[0180] To solve this problem, in the endoscope (1) of the present invention, the bending section (221) and the connecting portion (222) can be formed integrally. At this time, the bending section (221) and the connecting portion (222) can be formed by injection molding simultaneously. That is, in the present invention, the bending portions (221, 222) can be manufactured by simultaneously injection molding the bending section (221) of the first material and the connecting portion (222) of the second material using a single mold.

[0181] This allows for production in a single process using relatively low-cost materials, providing cost-effectiveness suitable for application to disposable endoscopes.

[0182]

[0183] 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 bending wire (230), a channel (240), 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).

[0184]

[0185] Meanwhile, the bending wire (230) receives the operating force of the operating knob (120) through the second connecting portion (250) and can bend the insertion tube (220) through a linear reciprocating motion.

[0186] The bending wire (230) may have one longitudinal end coupled to the lighting photographing unit (210) and the other longitudinal end coupled to the second wire frame (256). At this time, the bending wire (230) may pass through the internal space of a plurality of bending sections (221).

[0187] Accordingly, the bending section (221) can be relatively rotated so that the gap between the plurality of bending sections (221) becomes narrower on the side where the bending wire (230) is pulled. On the other hand, the bending section (221) can be relatively rotated so that the gap between the plurality of bending sections (221) becomes wider on the side where the bending wire (230) is released (lengthened). Accordingly, the plurality of bending sections (221) can form a bent shape.

[0188]

[0189] Meanwhile, referring to FIGS. 4 to 13, the second coupling part (250) is detachably coupled to the first coupling part (150) of the operating part (100). The second coupling part (250) includes a second coupling part body (251), a second coupling part plate (255), and a second wire frame (256).

[0190] The second coupling body (251) may be coupled with the insertion tube (220) on one longitudinal side and coupled with the first coupling body (150) on the other longitudinal side. At this time, the longitudinal side of the second coupling body (251) may be coupled with the longitudinal side of the insertion tube (220), and the longitudinal side of the second coupling body (251) may be provided so as to be detachably coupled with the first coupling body (151).

[0191] The second connecting body (251) 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 second connecting body (251) may be formed in a shape in which one end in the longitudinal direction can be connected to the insertion tube (224) of the insertion tube (220).

[0192] The other longitudinal side of the second coupling body (251) may be provided to be engaged with and coupled to the first coupling body (150). For example, the other longitudinal side of the second coupling body (251) may be in the form of a plate with three sides extending in the direction of the operating unit (100). As another example, the other longitudinal side of the second coupling body (251) may be in the form of a pair of plates extending in the direction of the operating unit (100). Accordingly, the second coupling body (251) may be coupled with the first coupling body (151) of the first coupling unit (150).

[0193] As a result, the second coupling body (251) can be fitted into the first coupling body (151). That is, the second coupling body (251) can be coupled with the first coupling body (151) to accommodate the first coupling plate (155), the first wire frame (156), the second coupling plate (255) and the second wire frame (256) therein.

[0194]

[0195] The second coupling plate (255) may be placed between a pair of surfaces facing each other among the second coupling body (251). The second coupling plate (255) may be placed on the inside of the second coupling body (251), but may be placed at a position facing the second coupling body (251).

[0196] Additionally, the second coupling plate (255) may be positioned facing the first coupling plate (155). At this time, when the first coupling plate (155) moves in accordance with the movement of the rack gear (154), it may be coupled with the second coupling plate (255).

[0197] For example, the second coupling plate (255) may be formed in the shape of a square plate having a predetermined thickness. At this time, a fixing portion (255a) may be formed on the second coupling plate (255) to fix the coupling with the first coupling plate (155). For example, the fixing portion (255a) may be formed in the shape of a protrusion and may be coupled with a hole-shaped fixing portion (155a) formed on the first coupling plate (155).

[0198] Meanwhile, a second wire frame (256) may be placed on the second coupling plate (255). The second wire frame (256) may be coupled to the second coupling plate (255) so as to enable linear reciprocating movement. For example, a guide groove may be formed on the second coupling plate (255) to guide linear movement of the second wire frame (256), and the second wire frame (256) may be placed on the guide groove.

[0199] Meanwhile, a bending wire (230) is coupled to the second wire frame (256). For example, the second wire frame (256) may be provided with a bending wire (230) coupled to one side in the longitudinal direction and capable of a linear reciprocating motion along the longitudinal direction.

[0200] Meanwhile, the first wire frame (156) may be coupled with the second wire frame (256). For example, the second wire frame (256) may have a frame coupling portion (256b) formed on the other side in the longitudinal direction. The frame coupling portion (256b) may have a shape in which a plurality of ribs and grooves are alternately formed. The frame coupling portion (256b) may be formed in a shape corresponding to the frame coupling portion (156b) of the first wire frame (156). That is, the first wire frame (156) and the second wire frame (256) may be coupled in an interlocked state.

[0201] An assembly in which the first wire frame (156) and the second wire frame (256) are combined can be placed inside the first coupling plate (155) and the second coupling plate (255). At this time, the first wire frame (156) can be accommodated in a guide groove formed in the first coupling plate (155), and the second wire frame (256) can be accommodated in a guide groove formed in the second coupling plate (255). Therefore, when the first coupling plate (155) and the second coupling plate (255) are combined, the assembly of the first wire frame (156) and the second wire frame (256) can be surrounded. That is, the assembly of the first wire frame (156) and the second wire frame (256) can reciprocate along the longitudinal direction (front-back direction), but can be restrained on the four sides (up, down, left, and right) by the first coupling plate (155) and the second coupling plate (255).

[0202] Through this, the manipulation wire (130) coupled to the first wire frame (156) and the bending wire (230) coupled to the second wire frame (256) can move in conjunction with each other, and the insertion tube (220) can be bent according to the manipulation of the manipulation knob (120).

[0203]

[0204] 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.

[0205] 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 having an operating knob and bending the insertion tube according to the operation of the operating knob; Including, The above insertion tube is, A bending part that bends according to the operation of the above operating part; Includes, The above bending part, A bending section injection molded from a first material; and A connecting portion that is injection-molded with a second material different from the first material and connects a plurality of the bending sections; Endoscopy including.

2. In paragraph 1, The above bending section is, An endoscope characterized by being formed in a ring shape.

3. In paragraph 1, The above connection part is, An endoscope characterized in that a pair is formed at each of the longitudinal ends of the above bending section.

4. In paragraph 3, The above connection part is, An endoscope characterized in that the bending section is arranged with a constant phase difference along the circumferential direction.

5. In paragraph 1, The above connection part is, The above bending sections are, An endoscope characterized in that the above connecting part is rotated relative to an axis.

6. In paragraph 1, The above first material is, An endoscope characterized by being made of polycarbonate.

7. In paragraph 1, The above second material is, An endoscope characterized by being made of thermoplastic polyurethane.

8. In paragraph 1, An endoscope characterized in that the bending section and the connecting portion are formed integrally.

9. In paragraph 8, An endoscope characterized in that the above bending section and the above connecting portion are formed by injection molding simultaneously.

10. In paragraph 1, Inside the above bending section, An endoscope characterized in that a wire passes through the endoscope and moves back and forth according to the operation of the above operation knob.

11. In paragraph 1, An endoscope characterized in that the first material has greater rigidity than the second material.

12. In paragraph 1, An endoscope characterized in that the second material has greater flexibility than the first material.

Images