Endoscope device, replaceable insertion tube mechanism and catheter used therefor

Abstract

To provide an endoscope device whose insertion tube mechanism is replaceable.SOLUTION: An endoscope device includes a handle mechanism 3 and a replaceable insertion tube mechanism 4. The handle mechanism 3 includes a handle unit 31, a connection unit 32 having a first connection end part 322 away from the handle unit 31, and a signal connector 35 connected to the handle unit 31 so as to transmit a signal. The replaceable insertion tube mechanism 4 includes an insertion tube unit 41 having a second connection end part 412 and an insertion end part 413 and an imaging unit 42 attached to the insertion tube unit 41. The imaging unit 42 includes a signal terminal 422 exposed from the second connection end part 412. The second connection end part 412 of the insertion tube unit 41 is coaxially combined with the first connection end part 322 detachably so that the signal terminal 422 is detachably connected with the signal connector 35 so as to transmit a signal.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to an endoscope device, and particularly to an endoscope device in which an insertion tube mechanism can be replaced.

Background Art

[0002] When inserting a catheter such as a nasogastric tube and a feeding tube, since the tube body of such a catheter is too soft and easily bends, a wire that provides a supporting force is inserted in advance when manufacturing the catheter. And during the insertion operation, in order to provide a visual guide, the catheter is inserted together with the endoscope in a state parallel to the endoscope.

[0003] However, the method of inserting the catheter in parallel with the endoscope has a structure in which two tube bodies are combined and becomes thick, so that the patient is likely to feel pain during the insertion process, and there is a possibility of damaging the mucosa of the body cavity.

[0004] In a conventional endoscope device such as Patent Document 1, the insertion tube for insertion into the body has a fixed tube diameter and the insertion tube cannot be replaced. Therefore, it is necessary to perform the insertion operation using an endoscope device provided with an insertion tube having an appropriate tube diameter according to the patient's body type. Therefore, it is necessary to prepare a plurality of endoscope devices each having an insertion tube of a different size, and the equipment cost of the medical institution is greatly increased.

[0005] In addition, a urinary catheter generally uses a material that is relatively hard and difficult to bend in order to be smoothly inserted and pass through the prostate during the insertion operation.

[0006] However, in many cases, the urinary catheter is inserted without knowing the degree of hypertrophy of the patient's prostate. In such a case, the tip of the urinary catheter often collides with the prostate, causing very strong pain to the patient.

[0007] Also, when the insertion of the urinary catheter does not proceed smoothly and fails to pass through the prostate area, medical staff (the operator) withdraws the urinary catheter once and tries to insert other thinner urinary catheters until the indwelling of the urinary catheter is successful. The method of blindly inserting the urinary catheter in this way is very uncomfortable for the patient and is likely to result in waste of instruments such as catheters.

Prior Art Documents

Patent Documents

[0008]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0009] An object of the present invention is to provide an endoscope device, an insertion tube, and a catheter that solve at least one problem of the prior art.

Means for Solving the Problems

[0010] The present invention is an endoscope device suitable for insertion into a catheter having a connection portion and a tube main body portion, including a handle mechanism and a replaceable insertion tube mechanism, wherein the handle mechanism includes a handle unit, a connection unit connected to the handle unit and having a first connection end portion away from the handle unit, and a signal connector connected to the handle unit so as to be capable of signal transmission and exposed from the first connection end portion, the connection unit includes a connection tube in which the first connection end portion is formed, and a first screwed annular body attached to the outside of the first connection end portion so as to be movable along the length direction of the connection tube, The exchangeable insertion tube mechanism includes an insertion tube unit having a second connection end portion and an insertion end portion that is the opposite end portion of the second connection end portion, and an imaging unit attached to the insertion tube unit. The insertion tube unit includes an insertion tube in which the second connection end portion and the insertion end portion are formed. The insertion tube is configured to be insertable into the tube body portion of the catheter such that the insertion end portion is at the opposite end to the connection portion of the catheter. The imaging unit has an imaging device attached to the insertion end portion, and a signal terminal that is connected to the imaging device so as to be capable of signal transmission and is exposed from the second connection end portion. The second connection end portion of the insertion tube unit is removably coaxially combined with the first connection end portion such that the signal terminal is removably connected to the signal connector so as to be capable of signal transmission. The imaging device is configured to be able to image in the direction towards the tip of the tube body portion of the catheter. The first screwed annular body is screwed so as to be removably annularly mounted on the second connection end portion, and the tips of the first connection end portion and the second connection end portion are connected and fixed. The first screwed annular body has a first annular portion screwed so as to be annularly mounted on the second connection end portion, and a second annular portion screwed so as to be annularly mounted on the connection portion. An endoscope device is provided, which is characterized by this.

[0011] Further, the present invention is an endoscope device suitable for insertion into a catheter having a connection portion and a tube body portion. It includes a handle mechanism and an exchangeable insertion tube mechanism. The handle mechanism includes a handle unit, a connection unit connected to the handle unit and having a first connection end portion that is away from the handle unit, and a signal connector that is connected to the handle unit so as to be capable of signal transmission and is exposed from the first connection end portion. The connection unit includes a connecting pipe formed with the first connecting end portion. The replaceable insertion tube mechanism includes an insertion tube unit and a photographing unit attached to the insertion tube unit. The insertion tube unit includes an insertion tube formed with a second connecting end portion and an insertion end portion that is the opposite end of the second connecting end portion, and a third screwed annular body attached to the outside of the second connecting end portion so as to be movable along the longitudinal direction of the insertion tube. The photographing unit has a camera attached to the insertion end portion and a signal terminal that is connected to the camera so as to be capable of signal transmission and is exposed from the second connecting end portion. The second connecting end portion is removably coaxially combined with the first connecting end portion so that the signal terminal is removably connected to the signal connector so as to be capable of signal transmission. The insertion tube is configured to be insertable into the tube body portion of the catheter such that the insertion end portion is at the opposite end to the connection portion of the catheter. The camera is configured to be able to photograph in the direction toward the tip of the tube body portion of the catheter. The third screwed annular body has a third annular portion annularly mounted on the second connecting end portion so as to be movable in the direction toward the insertion end portion without leaving the second connecting end portion, and a fourth annular portion screwed so as to be annularly mounted on the connection portion. An endoscope device is provided, characterized by this.

[0012] Further, the present invention is an endoscope device suitable for insertion into a catheter having a connection portion and a tube body portion. It includes a handle mechanism and a replaceable insertion tube mechanism. The handle mechanism includes a handle unit, a connection unit connected to the handle unit and having a first connecting end portion away from the handle unit, and a signal connector connected to the handle unit so as to be capable of signal transmission and exposed from the first connecting end portion. The connection unit includes a connection pipe formed with the first connection end portion, and a first screwed annular body attached to the outside of the first connection end portion so as to be movable along the length direction of the connection pipe. The replaceable insertion tube mechanism includes an insertion tube unit having a second connection end portion and an insertion end portion which is the opposite end of the second connection end portion, and an imaging unit attached to the insertion tube unit. The imaging unit has an imaging device attached to the insertion end portion, and a signal terminal which is connected to the imaging device so as to be capable of signal transmission and is exposed from the second connection end portion. The imaging device is configured to be able to image in the direction towards the tip of the tube body portion of the catheter. The insertion tube unit includes an insertion tube formed with the second connection end portion and the insertion end portion, and a third screwed annular body attached to the outside of the second connection end portion so as to be movable along the length direction of the insertion tube. The second connection end portion is removably coaxially combined with the first connection end portion such that the signal terminal is removably connected to the signal connector so as to be capable of signal transmission. The first screwed annular body is screwed so as to be removably fitted around the second connection end portion, and the tips of the first connection end portion and the second connection end portion are connected and fixed. The insertion tube is configured to be insertable into the tube body portion of the catheter such that the insertion end portion is at the opposite end to the connection portion of the catheter. The third screwed annular body has a third annular portion which is fitted around the second connection end portion so as to be movable in the direction towards the insertion end portion without leaving the second connection end portion, and a fourth annular portion which is screwed so as to be fitted around the connection portion. An endoscope device is provided, characterized by this.

[0013] Further, the present invention is an endoscope device suitable for insertion into a catheter having a connection portion and a tube body portion. It includes a handle mechanism and a replaceable insertion tube mechanism, The handle mechanism includes a handle unit, a connection unit connected to the handle unit and having a first connection end portion away from the handle unit, and a signal connector connected to the handle unit so as to be capable of signal transmission and exposed from the first connection end portion. The connection unit includes a connection tube in which the first connection end portion is formed. The replaceable insertion tube mechanism includes an insertion tube unit having a second connection end portion and an insertion end portion which is the opposite end of the second connection end portion, and a photographing unit attached to the insertion tube unit. The photographing unit has a camera attached to the insertion end portion, and a signal terminal connected to the camera so as to be capable of signal transmission and exposed from the second connection end portion. The camera is configured to be able to photograph toward the direction in which the tip of the tube main body portion of the catheter faces. The insertion tube unit includes an insertion tube in which the second connection end portion and the insertion end portion are formed, a second screwed annular body attached to the outside of the second connection end portion so as to be movable along the length direction of the insertion tube, and a third screwed annular body attached to the outside of the second connection end portion so as to be movable along the length direction of the insertion tube. The second connection end portion is removably coaxially combined with the first connection end portion so that the signal terminal is removably connected to the signal connector so as to be capable of signal transmission. The second screwed annular body is screwed so as to removably surround the first connection end portion, and the tips of the first connection end portion and the second connection end portion are connected and fixed. The insertion tube is configured to be able to be inserted into the tube main body portion of the catheter so that the insertion end portion is at the opposite end to the connection portion of the catheter. The third screwed annular body is provided with a third annular portion annularly mounted on the second connecting end so as to be movable in a direction toward the insertion end without leaving the second connecting end, and a fourth annular portion screwed so as to be annularly mounted on the connecting portion. An endoscope apparatus is provided, characterized by this.

[0014] Further, the present invention is a replaceable insertion tube mechanism suitable for being attached to a handle mechanism of an endoscope apparatus and suitable for being inserted into a catheter having a connecting portion and a tube body portion. It includes an insertion tube unit and an imaging unit. The insertion tube unit includes an insertion tube and a third screwed annular body attached to the outside of the second connecting end so as to be movable along the length direction of the insertion tube. The insertion tube has a second connecting end detachably combined coaxially with the handle mechanism and an insertion end which is the opposite end of the second connecting end. The insertion tube is configured to be insertable into the tube body portion of the catheter such that the insertion end is at the opposite end with respect to the connecting portion of the catheter. The third screwed annular body is provided with a third annular portion annularly mounted on the second connecting end so as to be movable in a direction toward the insertion end without leaving the second connecting end, and a fourth annular portion screwed so as to be annularly mounted on the connecting portion. The imaging unit is attached to the insertion tube unit and has an imaging device attached to the insertion end and a signal terminal connected to the imaging device so as to be capable of signal transmission and exposed from the second connecting end. The imaging device is configured to be able to image in a direction toward the tip of the tube body portion of the catheter. The signal terminal is configured to be able to be connected to the handle mechanism so as to be capable of signal transmission when the second connecting end is combined with the handle mechanism. A replaceable insertion tube mechanism is provided, characterized by this.

[0015] Furthermore, the present invention provides a catheter suitable for attachment to the above-described endoscope apparatus including the first screwed annular body, which has an integrally formed connecting portion and a tube main body portion, wherein the connecting portion is configured such that the insertion end portion of the insertion tube is inserted therein to surround the insertion tube, and is movable along the insertion tube to the connecting tube, and is configured to abut against the first annular portion of the first screwed annular body or the second connecting end portion of the insertion tube to be position-limited, and to be annularly mounted and screwed to the second annular portion of the first screwed annular body, and the tube main body portion is configured to be able to accommodate the insertion end portion inserted into the connecting portion, and a tip opening for the camera to photograph the outside is opened at an end opposite to the connecting portion. A catheter is provided with such features.

[0016] In addition, the present invention provides a catheter suitable for attachment to the above-described endoscope apparatus including the third screwed annular body, which has an integrally formed connecting portion and a tube main body portion, wherein the connecting portion is configured such that the insertion end portion of the insertion tube is inserted therein to surround the insertion tube, and is movable along the insertion tube to the connecting tube, and is configured to abut against the third annular portion of the third screwed annular body or the second connecting end portion of the insertion tube to be position-limited, and to be annularly mounted and screwed to the fourth annular portion of the third screwed annular body, and the tube main body portion is configured to be able to accommodate the insertion end portion inserted into the connecting portion, and a tip opening for the camera to photograph the outside is opened at an end opposite to the connecting portion. A catheter is provided with such features.

Advantages of the Invention

[0017] The above handle mechanism and the replaceable insertion tube mechanism are combined in a detachable structure, so that medical staff can adopt and attach a replaceable insertion tube mechanism with a required outer diameter size and length as needed, which can greatly reduce the equipment cost of medical institutions.

[0018] In addition, the first screwed annular body of the handle mechanism or the third screwed annular body of the replaceable insertion tube mechanism can be screwed to be annularly installed at the connection part of the catheter, so that the catheter can be stably attached and connected to the endoscope device, can be interlocked synchronously with the replaceable insertion tube mechanism, and the success rate of insertion and retention can be improved.

Brief Description of Drawings

[0019]

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Embodiments for Carrying Out the Invention

[0020] In order to more clearly explain the object, technical means, and advantages of the embodiments of the present invention, hereinafter, in combination with the accompanying drawings of the embodiments of the present invention, the technical means in the embodiments of the present invention will be clearly and completely explained. It will be apparent that the embodiments to be described are some of the embodiments of the present invention, not all of the embodiments. Usually, the components of the embodiments of the present invention depicted and shown in the accompanying drawings can be arranged and designed in various different arrangements. Therefore, hereinafter, the detailed description of the embodiments of the present invention provided in the accompanying drawings does not constitute any limitation on the protection scope of the present invention, but merely shows the selected embodiments of the present invention.

[0021] Before describing the present invention in more detail, it should be noted that, where appropriate, reference numerals or the terminal portions of reference numerals are repeated between figures to indicate corresponding or similar elements, which may optionally have similar characteristics.

[0022] In the description of the present invention, terms indicating orientation and positional relationships such as "upper", "lower", "inner", "outer", "left", "right", "front", "rear", "top", "bottom", etc. are based on the orientation and positional relationships shown in the drawings or the orientation and positional relationships habitually assumed when using the product of the present invention for the purpose of more simply and clearly explaining, and do not teach or suggest that the corresponding device or device has a specific orientation, structure or operation in a specific orientation, etc., and is not a limitation on the present invention.

[0023] Also, in the description of the present invention, terms such as "first", "second", etc. are used only for the purpose of distinction and do not teach or suggest relative importance.

[0024] As shown in FIGS. 1 and 2, the first embodiment of the endoscope device 200 of the present invention can be combined to communicate with a water supply facility (not shown) and a suction facility (not shown), and can also be connected to an image display facility (not shown) so as to be capable of signal transmission, and is suitable for being inserted into a catheter (not shown), thereby assisting the insertion operation and the indwelling operation of the catheter.

[0025] Examples of the catheter include, but are not limited to, a urinary catheter, a nutritional tube, etc.

[0026] The endoscope device 200 includes a handle mechanism 3 that can be combined with the water supply facility, the suction facility, and the image display facility, and a replaceable insertion tube mechanism 4 for insertion into the body, which is removably combined with the handle mechanism 3.

[0027] The handle mechanism 3 includes a handle unit 31, a connection unit 32 extending externally from the handle unit 31, a first communication pipe 33 attached to the handle unit 31 and the connection unit 32 so as to communicate with the handle unit 31 and the connection unit 32, a second communication pipe 34 attached to the handle unit 31 and the connection unit 32 so as to communicate with the handle unit 31 and the connection unit 32, and a signal connector 35 installed in the connection unit 32 and connected to the handle unit 31 so as to be capable of signal transmission.

[0028] The handle unit 31 includes a handle body 311, a water supply valve 312 attached to the handle body 311, a suction valve 313 attached to the handle body 311, and a communication module 314 attached to the handle body 311.

[0029] The water supply valve 312 is combined with the second communication pipe 34 so as to be able to communicate with the second communication pipe 34, and can be combined with the water supply facility so as to be able to communicate with the water supply facility, and is configured to be opened by being controlled so as to be able to communicate the second communication pipe 34 with the water supply facility.

[0030] The suction valve 313 is combined with the first communication pipe 33 so as to be able to communicate with the first communication pipe 33, and can be combined with the suction facility so as to be able to communicate with the suction facility, and is configured to be opened by being controlled so as to be able to communicate the first communication pipe 33 with the suction facility.

[0031] The communication module 314 is connected to the signal connector 35 so as to be capable of signal transmission, and can be connected to the image display facility so as to be capable of signal transmission, and is configured to be able to connect the signal connector 35 and the image display facility so as to be capable of signal transmission.

[0032] In this embodiment, the communication module 314 shown in FIGS. 1 and 2 is a communication cable that transmits signals through a wired connection. However, in other embodiments, the communication module 314 can use a device that wirelessly communicates with the image display facility. For example, a Bluetooth (registered trademark) module can be used, but it is not limited thereto.

[0033] In this first embodiment, the connection unit 32 includes a connecting pipe 321 that extends outward from the handle body 311 so as to be connected to the handle unit 31, and a first connecting end portion 322 that is separated from the handle body 311 is formed.

[0034] On the end face of the first connecting end portion 322, a connecting groove 323 into which the replaceable insertion tube mechanism 4 can be inserted is formed to be recessed.

[0035] As shown in FIGS. 2, 4, and 5, the first communication pipe 33 extends along the connecting pipe 321 and is installed in the connecting pipe 321. Further, the first communication pipe 33 has a first communication pipe connector 331 that is exposed at the connecting groove 323 while communicating in the coaxial direction with the connecting groove 323.

[0036] The second communication pipe 34 extends along the connecting pipe 321 and is installed in the connecting pipe 321. And the second communication pipe 34 has a second communication pipe connector 341 that is exposed at the connecting groove 323 while communicating in the coaxial direction with the connecting groove 323.

[0037] The signal connector 35 is exposed on the end face of the first connecting end portion 322 of the connecting pipe 321.

[0038] In this first embodiment, the signal connector 35 is of a socket type and is exposed at the connecting groove 323.

[0039] As shown in FIGS. 3, 4, and 5, the replaceable insertion tube mechanism 4 is detachably attached to the first connecting end 322 of the connecting pipe 321. Moreover, the replaceable insertion tube mechanism 4 includes an insertion tube unit 41, a photographing unit 42 attached to the insertion tube unit 41, a first connecting pipe 43 installed in the insertion tube unit 41 so as to penetrate the insertion tube unit 41, and a second connecting pipe 44 installed in the insertion tube unit 41 so as to penetrate the insertion tube unit 41.

[0040] In this first embodiment, the insertion tube unit 41 includes an insertion tube 411 that extends long and can be bent and deformed. The insertion tube 411 has a second connecting end 412, an insertion end 413 that is the opposite end of the second connecting end 412, and a tube body portion 414 that connects the second connecting end 412 and the insertion end 413. That is, the insertion tube 411 is formed with a second connecting end 412 and an insertion end 413 that are opposite ends of each other.

[0041] The outer diameter of the second connecting end 412 is smaller than the outer diameter of the tube body portion 414.

[0042] The first connecting pipe 43 is installed in the insertion tube 411 by extending along the insertion tube 411 so as to penetrate the second connecting end 412 and the insertion end 413. Further, the first connecting pipe 43 has a first opening 430 that is exposed at the end face of the insertion end 413, and is detachably combined with the first communication pipe connector 331, and has a first connecting pipe connector 431 that protrudes from the end face of the second connecting end 412.

[0043] The second connecting pipe 44 is installed in the insertion tube 411 so as to extend along the insertion tube 411 so as to penetrate the second connecting end portion 412 and the insertion end portion 413. Further, the second connecting pipe 44 has a second opening 440 exposed at the end face of the insertion end portion 413, and is removably combined with the second communication pipe connector 341, and has a second connecting pipe connector 441 protruding from the end face of the second connecting end portion 412.

[0044] The photographing unit 42 is attached to the insertion end portion 413. Further, the photographing unit 42 has a camera 421 that is exposed at the end face of the insertion end portion 413 and can take a photograph, and a signal terminal 422 that protrudes so as to be exposed from the end face of the second connecting end portion 412 and is connected to the camera 421 so as to be capable of signal transmission.

[0045] In this first embodiment, the camera 421 uses, for example, a charge-coupled device (CCD), but is not limited thereto.

[0046] The second connecting end portion 412 is removably coaxially connected to the first connecting end portion 322 so that the signal terminal 422 is removably connected to the signal connector 35 so as to be capable of signal transmission.

[0047] As shown in FIGS. 2, 4, and 5, when combining the handle mechanism 3 and the replaceable insertion tube mechanism 4, the second connection end 412 of the insertion tube 411 is coaxially inserted into the connection groove 323 of the connection pipe 321, whereby the first connection pipe connector 431 of the first connection pipe 43, the second connection pipe connector 441 of the second connection pipe 44, and the signal terminal 422 are inserted into the connection groove 323. Moreover, the first connection pipe connector 431 is inserted into the first communication pipe connector 331 so as to communicate with the first communication pipe connector 331 in an airtight manner, the second connection pipe connector 441 is inserted into the second communication pipe connector 341 so as to communicate with the second communication pipe connector 341 in an airtight manner, and the signal terminal 422 is inserted into the signal connector 35 so as to be capable of signal transmission and electrically connected to the signal connector 35, thereby completing the combination.

[0048] As shown in FIGS. 1 and 6, in practice, according to the sizes such as the tube diameter and length of each catheter, an insertion tube 411 having a tube body portion 414 and an insertion end portion 413 with different outer diameters and lengths can be manufactured. When replacing the insertion tube 411 with different tube diameters and lengths, after removing the replaceable insertion tube mechanism 4 originally inserted into the connection pipe 321, it can be replaced with a replaceable insertion tube mechanism 4 having the required outer diameter and length and installed, which is highly convenient.

[0049] When using the endoscope device 200 of the present invention to guide the insertion of catheters such as nasogastric tubes, nasojejunal tubes, nasogastric feeding tubes, and naso-enteric tubes, in a situation where a guiding wire (not shown) is not installed on the catheter, based on the inner diameter of the catheter to be used, an insertion tube unit 41 equipped with an insertion tube 411 having an appropriate size (outer diameter and length) is attached to the handle mechanism 3, and the insertion tube 411 is inserted into the catheter. Thereby, the supporting force of the catheter can be improved by the insertion tube 411, and the catheter can be inserted more easily to advance the catheter. Moreover, the camera 421 installed at the insertion end 413 of the insertion tube 411 can approach the opening at the tip of the catheter and take pictures in the direction towards which the tip is heading, that is, it can take pictures in the advancing direction of the catheter.

[0050] The image taken by the camera 421 is transmitted to the image display facility that is signal-transmittably connected to the communication module 314 by the signal terminal 422 and the signal connector 35 that are signal-transmittably connected to each other.

[0051] Therefore, during the catheter insertion process, medical staff can immediately obtain an image of the body cavity in front of the catheter and can easily adjust the advancing direction and observe the tissues of the body cavity.

[0052] When performing suction on the body cavity, for example, when sucking liquid or gas, the suction valve 313 is controlled to be opened, and a negative pressure suction force is generated in the corresponding communicating first communication tube 33 and the first connection tube 43 by the suction facility, so that suction work can be performed on the liquid or gas in the body cavity in front of the insertion end 413.

[0053] When cleaning the body cavity where the insertion operation is being performed, the water supply valve 312 is controlled to open, and liquid such as water provided from the water supply facility can be ejected forward of the insertion end portion 413 through the corresponding second communication pipe 34 and second connection pipe 44 that communicate therewith.

[0054] By inserting the insertion tube 411 of the endoscope device 200 of the present invention into the catheter and inserting or indwelling the catheter, the drawback of inserting a conventional endoscope in a state parallel outside the catheter can be eliminated.

[0055] Similarly, when inserting a urinary catheter, based on the inner diameter of the tube of the urinary catheter to be used, an insertion tube unit 41 provided with an insertion tube 411 having an appropriate outer diameter and length is attached to the handle mechanism 3, and the insertion tube 411 is inserted into the urinary catheter. Thereby, the imaging device 421 installed on the insertion tube 411 can approach the opening at the tip of the urinary catheter and perform imaging in the advancing direction of the urinary catheter.

[0056] By this method, in the process of inserting the urinary catheter, the hypertrophy state of the prostate can be immediately evaluated and known by image monitoring, which is beneficial for medical staff to directly replace the urinary catheter with an appropriate size.

[0057] In addition, when the endoscope device 200 of the present invention is inserted into the urinary catheter with the insertion tube 411, the supporting force of the urinary catheter can be improved with the insertion tube 411. Therefore, the tube body of the urinary catheter can be manufactured with a softer material, and the discomfort caused by the hardness of the material of the conventional urinary catheter can be significantly improved.

[0058] As shown in FIGS. 3, 4, and 5, in this first embodiment, since the connection tank 323 is formed so as to be recessed in the first connection end portion 322, the first connection end portion 322 and the second connection end portion 412 can be combined so as to be inserted into each other.

[0059] However, as another embodiment, a connecting groove may be formed in the second connecting end portion 412 so as to be recessed, and the first connecting end portion 322 may be inserted into the connecting groove of the second connecting end portion 412 for combination.

[0060] Also, in this first embodiment, the first communication pipe connector 331, the second communication pipe connector 341, and the signal connector 35 are embedded in the first connecting end portion 322 and exposed in the connecting groove 323, and the first connection pipe connector 431, the second connection pipe connector 441, and the signal terminal 422 protrude from the end face of the second connecting end portion 412. Therefore, when the first connecting end portion 322 and the second connecting end portion 412 are connected to each other, the first connection pipe connector 431 is inserted into the first communication pipe connector 331, the second connection pipe connector 441 is inserted into the second communication pipe connector 341, and the signal terminal 422 is inserted into the signal connector 35.

[0061] However, as another embodiment, the first communication pipe connector 331, the second communication pipe connector 341, and the signal connector 35 may be configured to protrude in the connecting groove 323 or from the end face of the first connecting end portion 322. Accordingly, the first connection pipe connector 431, the second connection pipe connector 441, and the signal terminal 422 may be embedded in the second connecting end portion 412 and configured to be exposed at the end face or in the connecting groove of the second connecting end portion 412. With this configuration, when the first connecting end portion 322 and the second connecting end portion 412 are inserted and combined with each other, the first communication pipe connector 331 is inserted into the first connection pipe connector 431, the second communication pipe connector 341 is inserted into the second connection pipe connector 441, and the signal connector 35 is inserted into the signal terminal 422, and water supply, suction, and signal transmission can be performed in the same manner.

[0062] As shown in FIG. 7, in another embodiment of this first embodiment, the signal connector 35 and the signal terminal 422 are not configured to be inserted into each other. Instead, both are planar. When the first connecting end portion 322 and the second connecting end portion 412 are connected, the signal connector 35 and the signal terminal 422 are in contact with each other so as to be electrically connected to each other, and perform electrical and signal transmission.

[0063] In addition, there are many ways to combine the first connecting end portion 322 and the second connecting end portion 412. Moreover, there are also many ways to combine the first communicating pipe connector 331 and the first connecting pipe connector 431 to communicate with each other, the second communicating pipe connector 341 and the second connecting pipe connector 441 to communicate with each other, and the signal connector 35 and the signal terminal 422 to be connected so as to enable signal transmission. Therefore, when implementing, it is not limited to the above-described embodiments.

[0064] As shown in FIGS. 8 and 9, the second embodiment of the endoscope device 200 of the present invention is similar to the first embodiment except for the structure in which the connection unit 32 and the insertion tube unit 41 are combined. Hereinafter, the differences between the first embodiment and the second embodiment will be described.

[0065] In this second embodiment, the connection unit 32 is attached to the outside of the first connecting end portion 322 so as to be movable along the length direction of the connecting pipe 321. Specifically, it further has a first screwed annular body 325 that is annularly installed on the first connecting end portion 322. A connecting groove 323 is not formed in the first connecting end portion 322, and the connecting pipe 321 further has a contact annular portion 324 that projects radially from the outer peripheral surface of the first connecting end portion 322.

[0066] The first screwed annular body 325 is screwed so as to be removably annularly installed on the second connecting end portion 412, and the tips of the first connecting end portion 322 and the second connecting end portion 412 are connected and fixed to each other.

[0067] That is, the first screwed annular body 325 is screwed around the second connecting end portion 412 so as to be removably mounted such that the tips of the first connecting end portion 322 and the second connecting end portion 412 are connected and fixed to each other.

[0068] In this second embodiment, when the first screwed annular body 325 is moved to the tip of the first connecting end portion 322 together with the first annular portion 327 described later, it can be configured to be in contact with the contact annular portion 324 and position-limited. It has a position-limiting annular portion 326 and a first annular portion 327 that extends coaxially from the position-limiting annular portion 326 beyond the contact annular portion 324 and can protrude from the tip of the first connecting end portion 322.

[0069] The first communication pipe connector 331, the second communication pipe connector 341, and the signal connector 35 are exposed from the end face of the first connecting end portion 322.

[0070] A thread 415 is formed on the outer peripheral surface of the second connecting end portion 412 of the insertion tube 411.

[0071] When combining the handle mechanism 3 and the replaceable insertion tube mechanism 4, the first connection pipe connector 431, the second connection pipe connector 441, and the signal terminal 422 protruding from the second connecting end portion 412 are respectively inserted into the first communication pipe connector 331, the second communication pipe connector 341, and the signal connector 35, and the tips of the first connecting end portion 322 and the second connecting end portion 412 abut against each other. Then, until the position-limiting annular portion 326 abuts against the contact annular portion 324 and is position-limited, when the first annular portion 327 of the first screwed annular body 325 is screwed onto the thread 415 of the second connecting end portion 412, the combination is completed.

[0072] When replacing it with another replaceable insertion tube mechanism 4, the replaceable insertion tube mechanism 4 can be removed from the handle mechanism 3 only by turning the first screwed annular body 325 and removing it from the second connecting end portion 412.

[0073] As shown in FIGS. 8 and 9, in this second embodiment, the first screwed annular body 325 is annularly mounted on the connecting pipe 321, and a thread 415 for screwing the first screwed annular body 325 is formed on the outer side of the second connecting end 412 of the insertion tube 411.

[0074] However, in other embodiments, the connection structure between the first screwed annular body 325 and the thread 415 can be exchanged. That is, as shown in FIG. 10, the first screwed annular body 325 is not installed on the connection unit 32, and a thread 329 is formed on the outer peripheral surface of the first connection end 322 of the connecting pipe 321. Moreover, the insertion tube unit 41 further includes a second screwed annular body 416 that is annularly mounted on the second connection end 412 of the insertion tube 411 so as to be movable along the length direction of the insertion tube 411 and is screwed so as to be annularly mounted on the thread 329 of the first connection end 322 removably. With this design, the first connection end 322 of the connecting pipe 321 and the second connection end 412 of the insertion tube 411 can also be connected and fixed so that the tips are combined with each other.

[0075] The third embodiment of the endoscope apparatus 200 of the present invention is similar to the first embodiment except for the structure of the first screwed annular body 325 of the connection unit 32 as shown in FIGS. 11 and 12.

[0076] This endoscope apparatus 200 of the third embodiment is also suitable for being inserted into the catheter 5. The catheter 5 has a connection portion 51 and a tube body portion 52. The connection portion 51 and the tube body portion 52 are integrally formed. Further, as shown in FIGS. 11 and 12, a thread is formed on the outer peripheral surface of the connection portion 51, and a tip opening 520 is opened at the opposite end of the tube body portion 52 with respect to the connection portion 51. That is, the connection portion 51 and the end where the tip opening 520 is opened are opposite ends of each other.

[0077] In this third embodiment, the first screwed annular body 325 further has a second annular portion 328 whose inner diameter is larger than that of the first annular portion 327 and extends coaxially in the direction from the first annular portion 327 toward the tube body portion 414 of the insertion tube 411.

[0078] The second annular portion 328 surrounds the tube body portion 414 with a gap therebetween.

[0079] The camera 421 is configured to be able to take a picture in the direction towards which the tip of the tube main body portion 52 of the catheter 5 is directed.

[0080] The insertion tube 411 is configured such that the tube body portion 414 can be inserted into the tube main body portion 52 of the catheter 5 with the insertion end portion 413 being at the opposite end with respect to the connection portion 51 of the catheter 5, and the connection portion 51 of the catheter 5 can be brought into contact with the second connection end portion 412 in the direction towards the connection tube 321 to be position - restricted.

[0081] When attaching the endoscope device 200 to the catheter 5, the insertion end portion 413 of the insertion tube 411 is inserted into the connection portion 51 of the catheter 5 such that the tube body portion 414 extends into the tube main body portion 52 of the catheter 5 until the connection portion 51 is positioned near the second connection end portion 412 of the insertion tube 411.

[0082] At this time, the insertion end portion 413 of the insertion tube 411 approaches the tip opening 520 of the tube main body portion 52, whereby the camera 421 can take a picture of the outside through the tip opening 520, and the second connection tube 44 can inject liquid to the outside through the tip opening 520, and the first connection tube 43 can suck liquid or gas through the tip opening 520.

[0083] Then, until the connection portion 51 abuts against the tip of the first annular portion 327 in the direction towards the connection tube 321 to be position - restricted and the position - restricting annular portion 326 abuts against the abutting annular portion 324 in the direction towards the insertion tube 411 to be position - restricted, the first screwed annular body 325 is moved in the direction towards the insertion tube 411 so as to screw the second annular portion 328 around the connection portion 51 of the catheter 5 and to screw the first annular portion 327 around the second connection end portion 412 of the insertion tube 411.

[0084] As shown in Fig. 12, in this third embodiment, since the second connecting end portion 412 of the insertion tube 411 and the tube body portion 414 are formed to have the same outer diameter, when the catheter 5 is inserted into the tube body portion 414, the outer diameter of the connection portion 51 is larger than the outer diameter of the second connecting end portion 412. Therefore, it is necessary to make the inner diameter of the second annular portion 328 of the first screwed annular body 325 larger than the inner diameter of the first annular portion 327.

[0085] However, in other embodiments, as shown in Fig. 13, the outer diameter of the tube body portion 414 of the insertion tube 411 can be made smaller than the outer diameter of the second connecting end portion 412. Thereby, when the catheter 5 is inserted into the tube body portion 414, the connection portion 51 and the second connecting end portion 412 are formed to have the same outer diameter, and the insertion tube 411 is configured to be position - limited by abutting against the second connecting end portion 412 in the direction in which the connection portion 51 faces the connecting tube 321. Thereby, in the first screwed annular body 325, the first annular portion 327 and the second annular portion 328 can be formed to have the same inner diameter.

[0086] Due to the connection structure with the catheter 5 in this third embodiment, the endoscope device 200 of the present invention can be directly connected and fixed to the catheter 5, so that the insertion and retention of the catheter 5 can proceed more easily, the success rate of insertion and retention is increased, and the medical quality is improved.

[0087] Also, in each of the above - described embodiments, by connecting the first communication pipe 33 and the first connection pipe 43 to each other and connecting the second communication pipe 34 and the second connection pipe 44 to each other, suction and water spraying can be performed respectively.

[0088] However, in other embodiments, without installing the second communication pipe 34 and the second connection pipe 44, the water supply valve 312 and the suction valve 313 can be combined with the first communication pipe 33 so as to communicate with the water supply valve 312 and the suction valve 313. When the first communication pipe 33 and the first connection pipe 43 are combined with each other, the first communication pipe 33 and the first connection pipe 43 have the functions of suction and water spraying. By operating the water supply valve 312 and the suction valve 313 separately, the suction operation and the water spraying operation can be performed in the same pipeline.

[0089] As shown in FIGS. 14 and 15, the fourth embodiment of the endoscope apparatus 200 of the present invention is similar to the third embodiment except that a first screwed annular body for connecting to the catheter 5 is not installed in the connection unit 32, the replaceable insertion tube mechanism 4 further includes a third screwed annular body 45 for combining with the catheter 5, and the combination of the first connecting end 322 and the second connecting end 412 is the same as that of the first embodiment.

[0090] In this fourth embodiment, the second connecting end 412 has a connecting portion 417 and a connecting portion 418 that connects the connecting portion 417 and the tube body portion 414.

[0091] The first connection pipe connector 431 of the first connection pipe 43, the second connection pipe connector 441 of the second connection pipe 44, and the signal terminal 422 protrude from the end face of the connecting portion 417.

[0092] The replaceable insertion tube mechanism 4 is combined by a method in which the connecting portion 417 of the second connecting end 412 is removably inserted into the connecting groove 323 of the first connecting end 322, so that the first connection pipe 43 communicates with the first communication pipe 33, the second connection pipe 44 communicates with the second communication pipe 34, and the signal terminal 422 is connected to the signal connector 35 so as to be capable of signal transmission. Since this combination method is the same as that of the first embodiment, detailed description is omitted.

[0093] The insertion tube unit 41 further includes a third screwed annular body 45 attached to the outside of the connecting portion 418 of the second connecting end portion 412 so as to be movable along the length direction of the insertion tube 411.

[0094] The third screwed annular body 45 includes a third annular portion 451 annularly mounted on the connecting portion 418 of the second connecting end portion 412 so as to be movable and rotatable in the direction toward the insertion end portion 413 without leaving the second connecting end portion 412, and a fourth annular portion 452 that is expanded in diameter with respect to the third annular portion 451 and extends in the direction toward the insertion end portion 413.

[0095] When combining the replaceable insertion tube mechanism 4 with the catheter 5, the insertion end portion 413 of the insertion tube 411 is inserted into the connection portion 51 of the catheter 5 so that the tube body portion 414 extends into the tube main body portion 52 of the catheter 5 until the connection portion 51 is located near the second connecting end portion 412 of the insertion tube 411.

[0096] Then, the third screwed annular body 45 is rotated so as to move in the direction toward the catheter 5, and the fourth annular portion 452 is screwed so as to be annularly mounted on the connection portion 51 of the catheter 5 until the connection portion 51 abuts against the third annular portion 451 in the direction toward the connection unit 32 and is position-limited. Thereby, the catheter 5 is fixed to the outside of the insertion tube 411.

[0097] That is, the third annular portion 451 is configured such that the connection portion 51 of the catheter 5 can abut against the third annular portion 451 in the direction toward the connection unit 32 and be position-limited.

[0098] However, in other embodiments, as shown in FIG. 16, when the outer diameter of the tube body portion 414 of the insertion tube 411 is smaller than the outer diameter of the second connecting end portion 412, the connection portion 51 and the second connecting end portion 412 can be formed in a shape with the same outer diameter. When the catheter 5 is inserted into the insertion tube 411, the connection portion 51 abuts against the connecting portion 418 of the second connecting end portion 412 in the direction toward the connection unit 32 and is position-limited. Therefore, in the third screwed annular body 45, the third annular portion 451 and the fourth annular portion 452 can be formed in a shape with the same outer diameter and can be screwed so as to be annularly mounted on the connection portion 51.

[0099] The fifth embodiment of the endoscope apparatus 200 of the present invention is similar to the fourth embodiment except for the structure combining the connection unit 32 and the insertion tube unit 41 as shown in FIGS. 17 and 18.

[0100] In this fifth embodiment, the structure combining the connection unit 32 and the insertion tube unit 41 is the same as that of the second embodiment.

[0101] That is, the connection structure of the third screwed annular body 45 and the catheter 5 in the fourth embodiment is combined with the second embodiment shown in FIGS. 9 and 10. The connection unit 32 of the handle mechanism 3 and the insertion tube unit 41 of the replaceable insertion tube mechanism 4 can be combined by the first screwed annular body 325 or the second screwed annular body 416, and the insertion tube unit 41 and the catheter 5 can be combined by the third screwed annular body 45.

[0102] According to the above content, due to the detachable combined structure of the handle mechanism 3 and the replaceable insertion tube mechanism 4, medical staff can select a replaceable insertion tube mechanism 4 with a required outer diameter or length and attach it to the handle mechanism 3 as needed. That is, for one handle mechanism 3, a plurality of replaceable insertion tube mechanisms 4 each having an insertion tube 411 with a different outer diameter or length can be selectively combined and used. Moreover, when the replaceable insertion tube mechanism 4 in use in the endoscope device 200 is damaged, only the damaged replaceable insertion tube mechanism 4 needs to be replaced to repair it, without the need to replace the entire endoscope device 200, which can significantly reduce the equipment cost of medical institutions.

[0103] Furthermore, due to the structure of the first screwed annular body 325 or the third screwed annular body 45, the catheter 5 surrounding the insertion tube 411 can be fixed. Thereby, the endoscope device 200 is installed coaxially with the catheter 5, can assist in inserting and guiding the catheter 5, and can eliminate the drawback of inserting and guiding a conventional endoscope in a state parallel outside the catheter.

[0104] Also, at the connection portion 51 of the catheter 5, due to the structure of being annularly mounted and screwed on the first screwed annular body 325 or the third screwed annular body 45, the catheter 5 can be stably connected to the endoscope device 200, can be interlocked synchronously with the replaceable insertion tube mechanism 4, and the success rate of insertion and retention can be increased.

[0105] Therefore, the endoscope device 200 having the replaceable insertion tube mechanism 4 of the present invention and the catheter 5 used in the endoscope device 200 of the present invention are innovative and convenient inventions, and can surely achieve the object of the present invention.

[0106] The above embodiments are illustrative of the principles and effects of the present invention and do not limit the present invention. Those skilled in the art can make some changes and modifications to the above embodiments on the premise of not departing from the spirit and scope of the present invention. Therefore, all changes and modifications made by those skilled in the art on the premise of not departing from the gist of the present invention should be included in the protection scope of the present invention.

Industrial Applicability

[0107] The present invention provides an endoscope device in which an insertion tube mechanism can be replaced, a replaceable insertion tube mechanism used therefor, and a catheter.

Explanation of Signs

[0108] 200 Endoscope device 3 Handle mechanism 31 Handle unit 311 Handle body 312 Water supply valve 313 Suction valve 314 Communication module 32 Connection unit 321 Connecting tube 322 First connecting end 323 Connecting tank 324 Contact annular part 325 First screwed annular body 326 Position limiting annular part 327 First annular part 328 Second annular part 329 Thread 33 First communication pipe 331 First communication pipe connector 34 Second communication pipe 341 Second communication pipe connector 35 Signal connector 4 Replaceable insertion tube mechanism 41 Insertion tube unit 411 Insertion tube 412 Second connecting end 413 Insertion end 414 Tube body 415 Thread 416 Second screwed annular body 417 Connecting part 418 Joining part 42 Imaging unit 421 Imaging device 422 Signal terminal 43 First connecting tube 430 First opening 431 First connecting tube connector 44 Second connecting tube 440 Second opening 441 Second connecting tube connector 45 Third screwed annular body 451 Third annular part 452 Fourth annular part 5 Catheter 51 Connecting part 52 Tube main body 520 Tip opening

Claims

1. An endoscope device suitable for insertion into a catheter having a connecting portion and a tube main body portion, A handle mechanism and a replaceable insertion tube mechanism, the handle mechanism includes a handle unit, a connection unit connected to the handle unit and having a first connection end remote from the handle unit, and a signal connector connected to the handle unit so as to be capable of transmitting a signal and exposed from the first connection end, the connection unit includes a connection pipe having the first connection end formed thereon, and a first screw-type annular body attached to the outside of the first connection end so as to be movable along a length direction of the connection pipe; The replaceable insertion tube mechanism includes an insertion tube unit having a second connecting end and an insertion end opposite to the second connecting end, and a photographing unit attached to the insertion tube unit; the insertion tube unit includes an insertion tube having the second connecting end and the insertion end formed thereon, the insertion tube is configured to be inserted into the tube body of the catheter such that the insertion end is at an opposite end to the connection portion of the catheter; The photographing unit includes a photographing device attached to the insertion end portion, and a signal terminal connected to the photographing device so as to be capable of transmitting signals and exposed from the second connecting end portion, the second connecting end of the insertion tube unit is removably combined with the first connecting end so as to be coaxial with the signal terminal and removably connected to the signal connector so as to be capable of transmitting a signal; The camera is configured to be capable of photographing a location where the tip of the tube main body of the catheter is directed, the first screw-type annular body is screwed so as to be removably fitted around the second connecting end portion, and the first connecting end portion and the second connecting end portion are connected and fixed to each other at their tips; An endoscopic device characterized in that the first screw-type annular body has a first annular portion screwed to be fitted around the second connecting end portion, and a second annular portion screwed to be fitted around the connection portion.

2. the signal connector is exposed at an end surface of the first coupling end of the connection pipe, 2. The endoscope apparatus according to claim 1, wherein the signal terminal of the photographing unit is exposed at an end face of the second connecting end portion and is electrically connected to the signal connector.

3. the handle mechanism further includes a first communication pipe coupled to the handle unit and installed within the connection pipe along the connection pipe of the connection unit; the first communicating tube has a first communicating tube connector exposed at an end surface of the first connecting end portion, The replaceable insertion tube mechanism further includes a first connecting tube extending along the insertion tube so as to penetrate the second connecting end and the insertion end and installed within the insertion tube; The endoscopic device according to claim 2, characterized in that the first connecting tube has a first connecting tube connector exposed at an end face of the second connecting end and removably combined with the first connecting tube connector so as to be in communication with the first connecting tube connector.

4. the handle mechanism further includes a second communication pipe coupled to the handle unit and extending along the connecting pipe and disposed within the connecting pipe; the second communicating pipe has a second communicating pipe connector exposed at an end surface of the first connecting end portion, The replaceable insertion tube mechanism further includes a second connection tube extending along the insertion tube so as to penetrate the second connecting end and the insertion end and installed within the insertion tube, The endoscopic device according to claim 3, characterized in that the second connecting tube has a second connecting tube connector exposed at an end face of the second connecting end and removably combined with the second connecting tube connector so as to be in communication with the second connecting tube connector.

5. The handle unit includes: The handle body and a water supply valve coupled to the second communicating pipe so as to be capable of communicating with the second communicating pipe and attached to the handle body; a suction valve coupled to the first communication pipe so as to be capable of communicating with the first communication pipe and attached to the handle body; The endoscope apparatus according to claim 4 , further comprising: a communication module that is connected to the signal connector so as to be capable of transmitting signals and that is attached to the handle body.

6. The insertion tube further includes a tube body portion connecting the second connecting end portion and the insertion end portion, The outer diameter of the second connection end is greater than the outer diameter of the tube body portion, The endoscope device according to claim 1, characterized in that the insertion tube is configured so that the tube body portion can be inserted into the tube main body portion of the catheter so that the insertion end portion is at the opposite end to the connection portion of the catheter, and so that the connection portion of the catheter can abut against the second connecting end portion in a direction toward the connecting tube and be positionally restricted.

7. the connecting pipe further has an annular contact portion extending radially from an outer circumferential surface of the first connecting end portion, the first threaded annular body further includes a position limiting annular portion connected to the first annular portion; The endoscope device according to claim 1, characterized in that the position limiting annular portion is configured to abut against the abutment annular portion and be positionally limited when moved together with the first annular portion to the tip of the first connecting end portion.

8. The endoscope apparatus according to claim 7 , wherein an inner diameter of the second annular portion is larger than an inner diameter of the first annular portion.

9. The endoscope apparatus according to claim 7 , wherein an inner diameter of the second annular portion is the same as an inner diameter of the first annular portion.

10. An endoscope device suitable for insertion into a catheter having a connecting portion and a tube main body portion, A handle mechanism and a replaceable insertion tube mechanism, the handle mechanism includes a handle unit, a connection unit connected to the handle unit and having a first connection end remote from the handle unit, and a signal connector connected to the handle unit so as to be capable of transmitting a signal and exposed from the first connection end, the connection unit includes a connection pipe having the first coupling end formed thereon, The replaceable insertion tube mechanism includes an insertion tube unit and a photographing unit attached to the insertion tube unit, The insertion tube unit includes an insertion tube having a second connecting end and an insertion end opposite to the second connecting end, and a third screw-type annular body attached to the outside of the second connecting end so as to be movable along a length direction of the insertion tube, The photographing unit includes a photographing device attached to the insertion end portion, and a signal terminal connected to the photographing device so as to be capable of transmitting signals and exposed from the second connecting end portion, the second connecting end is removably and coaxially assembled with the first connecting end such that the signal terminal is removably connected to the signal connector so as to be capable of transmitting signals; the insertion tube is configured to be inserted into the tube body of the catheter such that the insertion end is at an opposite end to the connection portion of the catheter; The camera is configured to be capable of photographing a location where the tip of the tube main body of the catheter is directed, An endoscopic device characterized in that the third screw-type annular body has a third annular portion that is screwed around the second connecting end so as to move in a direction toward the insertion end without separating from the second connecting end, and a fourth annular portion that is screwed around the connection portion.

11. The endoscope apparatus according to claim 10, wherein the third helical annular body is rotatably mounted on the second connecting end portion.

12. The endoscopic device according to claim 10, characterized in that the third annular portion is configured so that the connection portion of the catheter can be abutted against the third annular portion in a direction toward the connection unit and be positionally restricted.

13. The insertion tube further includes a tube body portion connecting the second connecting end portion and the insertion end portion, The outer diameter of the second connection end is greater than the outer diameter of the tube body portion, The endoscope device according to claim 10, wherein the insertion tube is configured so that the connection portion of the catheter can be abutted against the second connecting end portion in a direction toward the connection unit to be positionally restricted.

14. An endoscope device suitable for insertion into a catheter having a connecting portion and a tube main body portion, A handle mechanism and a replaceable insertion tube mechanism, the handle mechanism includes a handle unit, a connection unit connected to the handle unit and having a first connection end remote from the handle unit, and a signal connector connected to the handle unit so as to be capable of transmitting a signal and exposed from the first connection end, the connection unit includes a connection pipe having the first connection end formed thereon, and a first screw-type annular body attached to the outside of the first connection end so as to be movable along a length direction of the connection pipe; The replaceable insertion tube mechanism includes an insertion tube unit having a second connecting end and an insertion end opposite to the second connecting end, and a photographing unit attached to the insertion tube unit; The photographing unit includes a photographing device attached to the insertion end portion, and a signal terminal connected to the photographing device so as to be capable of transmitting a signal and exposed from the second connecting end portion, The camera is configured to be capable of photographing a location where the tip of the tube main body of the catheter is directed, The insertion tube unit includes an insertion tube having the second connecting end and the insertion end formed thereon, and a third screw-type annular body attached to the outside of the second connecting end so as to be movable along the length direction of the insertion tube, the second connecting end is removably and coaxially assembled with the first connecting end such that the signal terminal is removably connected to the signal connector so as to be capable of transmitting signals; the first screw-type annular body is screwed so as to be removably fitted around the second connecting end portion, and the first connecting end portion and the second connecting end portion are connected and fixed to each other at their tips; the insertion tube is configured to be inserted into the tube body of the catheter such that the insertion end is at an opposite end to the connection portion of the catheter; An endoscopic device characterized in that the third screw-type annular body has a third annular portion that is screwed around the second connecting end so as to move in a direction toward the insertion end without separating from the second connecting end, and a fourth annular portion that is screwed around the connection portion.

15. The endoscope apparatus according to claim 14, wherein the third helical annular body is rotatably mounted on the second connecting end portion.

16. The endoscope device according to claim 14, characterized in that the third annular portion is configured so that the connection portion of the catheter can be abutted against the third annular portion in a direction toward the connecting tube and be positionally restricted.

17. The insertion tube has a tube body portion connecting the second connecting end portion and the insertion end portion, The outer diameter of the second connection end is greater than the outer diameter of the tube body portion, The endoscope device according to claim 14, characterized in that the insertion tube is configured so that the connection portion of the catheter can be abutted against the second connecting end portion in a direction toward the connecting tube to be positionally restricted.

18. An endoscope device suitable for insertion into a catheter having a connecting portion and a tube main body, A handle mechanism and a replaceable insertion tube mechanism, the handle mechanism includes a handle unit, a connection unit connected to the handle unit and having a first connection end remote from the handle unit, and a signal connector connected to the handle unit so as to be capable of transmitting a signal and exposed from the first connection end, the connection unit includes a connection pipe having the first coupling end formed thereon, The replaceable insertion tube mechanism includes an insertion tube unit having a second connecting end and an insertion end opposite to the second connecting end, and a photographing unit attached to the insertion tube unit; The photographing unit includes a photographing device attached to the insertion end portion, and a signal terminal connected to the photographing device so as to be capable of transmitting a signal and exposed from the second connecting end portion, The camera is configured to be capable of photographing a location where the tip of the tube main body of the catheter is directed, The insertion tube unit includes an insertion tube on which the second connecting end and the insertion end are formed, a second screw ring attached to the outside of the second connecting end so as to be movable along the length direction of the insertion tube, and a third screw ring attached to the outside of the second connecting end so as to be movable along the length direction of the insertion tube, the second connecting end is removably and coaxially assembled with the first connecting end such that the signal terminal is removably connected to the signal connector so as to be capable of transmitting signals; the second screw annular body is screwed so as to be removably fitted around the first connecting end portion, and the first connecting end portion and the second connecting end portion are connected and fixed to each other at their tips; the insertion tube is configured to be inserted into the tube body of the catheter such that the insertion end is at an opposite end to the connection portion of the catheter; An endoscopic device characterized in that the third screw-type annular body has a third annular portion that is screwed around the second connecting end so as to move in a direction toward the insertion end without separating from the second connecting end, and a fourth annular portion that is screwed around the connection portion.

19. The endoscope apparatus according to claim 18, wherein the third helical annular body is rotatably mounted on the second connecting end portion.

20. The endoscopic device according to claim 18, characterized in that the third annular portion is configured so that the connection portion of the catheter can be abutted against the third annular portion in a direction toward the connecting tube and be positionally restricted.

21. The insertion tube has a tube body portion connecting the second connecting end portion and the insertion end portion, The outer diameter of the second connection end is greater than the outer diameter of the tube body portion, The endoscope device according to claim 18, characterized in that the insertion tube is configured so that the connection portion of the catheter can be abutted against the second connecting end portion in a direction toward the connecting tube to be positionally restricted.

22. An exchangeable insertion tube mechanism that is suitable for being attached to a handle mechanism of an endoscope device and for being inserted into a catheter having a connecting portion and a tube main body portion, An insertion tube unit and a photographing unit are included. The insertion tube unit includes an insertion tube and a third screw-type annular body attached to the outside of the second connecting end of the insertion tube so as to be movable along the length direction of the insertion tube, The insertion tube has the second connecting end portion which is removably combined with the handle mechanism coaxially, and an insertion end portion which is an opposite end portion of the second connecting end portion, the insertion tube is configured to be inserted into the tube body of the catheter such that the insertion end is at an opposite end to the connection portion of the catheter; The third screw-type annular body has a third annular portion that is encircled around the second connecting end so as to be movable in a direction toward the insertion end without separating from the second connecting end, and a fourth annular portion that is screwed around the connecting portion, The photographing unit is attached to the insertion tube, and has a photographing device attached to the insertion end portion, and a signal terminal connected to the photographing device so as to be capable of transmitting a signal and exposed from the second connecting end portion, The camera is configured to be capable of photographing a location where the tip of the tube main body of the catheter is directed, The signal terminal is configured to be connected to the handle mechanism so as to be capable of transmitting signals when the second connecting end is combined with the handle mechanism.

23. The replaceable insertion tube mechanism according to claim 22, wherein the signal terminal is exposed at an end surface of the second connecting end so as to be removably electrically connected to the handle mechanism.

24. The replaceable insertion tube mechanism according to claim 23, wherein the signal terminal protrudes from an end face of the second connecting end so as to be removably inserted into and electrically connected to the handle mechanism.

25. The first connecting tube extends along the insertion tube so as to penetrate the second connecting end and the insertion end, and is installed in the insertion tube. The replaceable insertion tube mechanism according to claim 23 or 24, characterized in that the first connecting tube has a first connecting tube connector exposed at an end face of the second connecting end and removably combined with the handle mechanism so as to be in communication with the handle mechanism.

26. The interchangeable insertion tube mechanism according to claim 25, characterized in that the first connecting tube connector protrudes from an end face of the second connecting end so as to be removably inserted into and communicated with the handle mechanism.

27. a second connecting tube extending along the insertion tube so as to penetrate the second connecting end and the insertion end and installed within the insertion tube; The interchangeable insertion tube mechanism according to claim 25, characterized in that the second connecting tube has a second connecting tube connector exposed at an end face of the second connecting end and removably coupled to the handle mechanism so as to be in communication with the handle mechanism.

28. The interchangeable insertion tube mechanism according to claim 27, characterized in that the second connecting tube connector protrudes from an end face of the second connecting end so as to be removably inserted into and communicated with the handle mechanism.

29. the handle mechanism includes a connecting tube and a first threaded annular body attached to the outside of the connecting tube; The replaceable insertion tube mechanism according to claim 22, characterized in that the outer peripheral surface of the second connecting end is formed with a screw thread onto which the first screw-type annular body can be removably screwed.

30. The interchangeable insertion tube mechanism of claim 22, characterized in that the insertion tube unit includes a second threaded annular body attached to the outside of the second connecting end so as to be movable along the length of the insertion tube and configured to be removably threadedly attached to the handle mechanism.

31. 23. The interchangeable insertion tube mechanism of claim 22, wherein the third threaded annular member is rotatably mounted on the second connecting end.

32. The exchangeable insertion tube mechanism of claim 22, wherein the third annular portion is configured so that the connection portion of the catheter can be abutted against the third annular portion in a direction toward the handle mechanism and be positioned accordingly.

33. The insertion tube has a tube body portion connecting the second connecting end portion and the insertion end portion, The outer diameter of the second connection end is greater than the outer diameter of the tube body portion, The interchangeable insertion tube mechanism according to claim 22, characterized in that the insertion tube is configured so that the connection portion of the catheter can be abutted against the second connecting end in a direction toward the handle mechanism and be positionally restricted.

Images