Endoscope device, and replaceable insertion tube mechanism and catheter used for the same

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 apparatus, and more particularly to an endoscope apparatus in which an insertion tube mechanism can be replaced. [Background technology]

[0002] When inserting catheters such as nasogastric tubes and feeding tubes, the tubes of such catheters are too soft and easily bent, so a wire that provides support is inserted in advance when the catheter is manufactured. During the insertion process, the catheter is inserted together with the endoscope in a state where it is parallel to the endoscope in order to provide a visual guide.

[0003] However, when inserting a catheter in parallel with an endoscope, the structure formed by combining two tubular bodies becomes thick, which makes it likely that the patient will feel pain during the insertion process and may also damage the mucous membrane of the body cavity.

[0004] In conventional endoscopic devices such as that in Patent Document 1, the insertion tube for insertion into the body has a fixed diameter and cannot be replaced. Therefore, it is necessary to perform the insertion operation using an endoscopic device equipped with an insertion tube having an appropriate diameter according to the patient's body type. This requires the preparation of multiple endoscopic devices, each equipped with an insertion tube of a different size, which significantly increases the equipment costs of medical institutions.

[0005] Furthermore, a urinary catheter is generally made of a material that is relatively hard and difficult to bend, so that the catheter can be smoothly inserted and pass through the prostate.

[0006] However, there are many cases where a urinary catheter is inserted without understanding the extent of the patient's prostate enlargement, and in such cases the tip of the urinary catheter often hits the prostate, causing severe pain to the patient.

[0007] Also, when the insertion of the urinary catheter is not smooth and does not pass through the prostate area, the medical practitioner (practitioner) temporarily removes the urinary catheter and tries to insert another thinner urinary catheter until the urinary catheter is successfully placed. This method of blindly inserting a urinary catheter is very uncomfortable for the patient and is likely to waste equipment such as catheters. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] International Publication No. 2006 / 088058 Summary of the Invention [Problem to be solved by the invention]

[0009] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide an endoscopic device, an insertion tube, and a catheter that overcome at least one of the problems of the prior art. [Means for solving the problem]

[0010] The present invention provides 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 spiral 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 is provided, 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 connecting portion.

[0011] The present invention also provides 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 the length 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 is provided, 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 moving away from the second connecting end, and a fourth annular portion that is screwed around the connection portion.

[0012] The present invention also provides 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 spiral 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 signals 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 is provided, 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 moving away from the second connecting end, and a fourth annular portion that is screwed around the connection portion.

[0013] The present invention also provides 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-type 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 is provided, 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 moving away from the second connecting end, and a fourth annular portion that is screwed around the connection portion.

[0014] The present invention also provides an exchangeable insertion tube mechanism suitable for attachment to a handle mechanism of an endoscope device and suitable for insertion 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 portion so as to be movable along the length direction of the insertion tube, The insertion tube has a second connecting end portion that is removably combined with the handle mechanism coaxially, and an insertion end portion that 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 screwed around the second connecting end so as to be movable in a direction toward the insertion end without moving away 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 unit, 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 signals 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 present invention provides an interchangeable insertion tube mechanism, characterized in that 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.

[0015] The present invention also provides a catheter suitable for attachment to the above-mentioned endoscope device, the catheter including the first helical annular body, The connecting portion and the pipe body portion are integrally formed, the connecting portion is configured such that the insertion end portion of the insertion tube is inserted into the connecting portion to surround the insertion tube, the connecting portion moves along the insertion tube to the connecting pipe, the connecting portion abuts against the first annular portion of the first screw-type annular body or the second connecting end portion of the insertion tube to be restricted in position, and the connecting portion is configured such that the connecting portion can be screwed into the second annular portion of the first screw-type annular body, The catheter is characterized in that the tube main body is configured to accommodate the insertion end inserted into the connection portion, and a tip opening is formed at the end opposite the connection portion to allow the camera to photograph the outside.

[0016] The present invention also provides a catheter suitable for attachment to the above-mentioned endoscope device, the catheter comprising a third helical annular body, The connecting portion and the pipe body portion are integrally formed, the connecting portion is configured such that the insertion end portion of the insertion tube is inserted into the connecting portion to surround the insertion tube, the connecting portion moves along the insertion tube to the connecting pipe, the connecting portion abuts against the third annular portion of the third screw-type annular body or the second connecting end portion of the insertion tube to be restricted in position, and the connecting portion is configured such that the connecting portion can be screwed into the fourth annular portion of the third screw-type annular body, The catheter is characterized in that the tube main body is configured to accommodate the insertion end inserted into the connection portion, and a tip opening is formed at the end opposite the connection portion to allow the camera to photograph the outside. Effect of the Invention

[0017] The handle mechanism and the replaceable insertion tube mechanism are structured to be removably combined, allowing medical personnel to adopt and install an replaceable insertion tube mechanism having the required outer diameter size and length as needed, thereby significantly reducing the equipment costs of medical institutions.

[0018] In addition, the first screw-type ring of the handle mechanism or the third screw-type ring of the replaceable insertion tube mechanism can be screwed so as to be encircled around the connection portion of the catheter, allowing the catheter to be stably attached and connected to the endoscopic device and synchronously linked with the replaceable insertion tube mechanism, thereby increasing the success rate of insertion and placement. [Brief description of the drawings]

[0019] [Figure 1] 1 is a partial front view showing the structure of a first embodiment of an endoscope device of the present invention. [Diagram 2] FIG. 2 is an exploded view of some parts of the first embodiment. [Diagram 3] FIG. 2 is a partial perspective view showing the replaceable insertion tube mechanism of the first embodiment. [Figure 4] FIG. 2 is an exploded view of parts showing a combined structure of a handle mechanism and an exchangeable insertion tube mechanism according to the first embodiment. [Diagram 5] FIG. 4 is a partial cross-sectional view showing a combined structure of a handle mechanism and an exchangeable insertion tube mechanism of the first embodiment. [Figure 6] FIG. 11 is an exploded view of parts showing a situation in which a different replaceable insertion tube mechanism of the first embodiment is used. [Figure 7] FIG. 11 is an exploded view of parts showing a combined structure of a handle mechanism and a replaceable insertion tube mechanism in another aspect of the first embodiment. [Figure 8] FIG. 11 is an exploded view of partial components showing a combined structure of a handle mechanism and an exchangeable insertion tube mechanism in a second embodiment of an endoscope device of the present invention. [Figure 9] FIG. 11 is a partial cross-sectional view showing a combined structure of a handle mechanism and an exchangeable insertion tube mechanism according to the second embodiment. [Figure 10] FIG. 11 is a partial cross-sectional view showing a combined structure of a handle mechanism and an exchangeable insertion tube mechanism in another aspect of the second embodiment. [Figure 11] FIG. 11 is an exploded view of some components showing the structure of a third embodiment of an endoscope device of the present invention. [Figure 12] FIG. 11 is a partial cross-sectional view showing the structure of the third embodiment. [Figure 13] FIG. 11 is a partial cross-sectional view showing the structure of another aspect of the third embodiment. [Figure 14] 11 is a partial cross-sectional view showing a fourth embodiment of an endoscopic device of the present invention used in combination with a catheter. FIG. [Figure 15] FIG. 11 is an exploded view of parts showing the structure of the fourth embodiment. [Figure 16] FIG. 13 is a partial cross-sectional view showing the structure of another aspect of the fourth embodiment. [Figure 17] 11 is a partial cross-sectional view showing a situation in which a fifth embodiment of an endoscopic device of the present invention is used in combination with a catheter. FIG. [Figure 18] FIG. 13 is a partial cross-sectional view showing the structure of another aspect of the fifth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] In order to more clearly describe the objectives, technical means and advantages of the embodiments of the present invention, the following will clearly and completely describe the technical means in the embodiments of the present invention in combination with the accompanying drawings of the embodiments of the present invention. It is clear that the described embodiments are only some embodiments of the present invention, and not all embodiments. Generally, the components of the embodiments of the present invention depicted and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of the present invention provided below in the accompanying drawings does not constitute any limitation on the protection scope of the present invention, but only represents selected embodiments of the present invention.

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

[0022] In describing the present invention, terms indicating orientations and positional relationships, such as "upper", "lower", "inner", "outer", "left", "right", "front", "rear", "top", and "bottom", are based on the orientations and positional relationships shown in the drawings or the orientations and positional relationships customarily assumed when using the product of the present invention, for the purpose of easier and clearer description, and are not intended to teach or suggest that the corresponding apparatus or device has a specific orientation, structure or operation in a specific orientation, etc., and are not intended to be limitations on the present invention.

[0023] Moreover, in describing the present invention, the terms "first", "second", etc. are used for distinguishing purposes only and do not teach or imply any relative importance.

[0024] A first embodiment of an endoscopic device 200 of the present invention, as shown in Figures 1 and 2, can be combined so as to communicate with a water supply equipment (not shown) and a suction equipment (not shown), and can also be connected to an image display equipment (not shown) so as to be capable of transmitting signals. It is suitable for being inserted into a catheter (not shown), thereby assisting in the insertion and placement of the catheter.

[0025] Examples of such catheters include, but are not limited to, urinary catheters and feeding tubes.

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

[0027] The handle mechanism 3 includes a handle unit 31, a connection unit 32 extending outward from the handle unit 31, a first communicating tube 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 communicating tube 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 on the connection unit 32 and connected to the handle unit 31 so as to be able to transmit signals.

[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 connecting pipe 34 so as to be able to communicate with the second connecting pipe 34, and can be combined with the water supply equipment so as to be able to communicate with the water supply equipment, and is configured to be able to open by being controlled to communicate the second connecting pipe 34 with the water supply equipment.

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

[0031] The communication module 314 is connected to the signal connector 35 so as to be capable of transmitting signals, and is also capable of being connected to the image display equipment so as to be capable of transmitting signals, so that the signal connector 35 and the image display equipment can be connected so as to be capable of transmitting signals.

[0032] In this embodiment, the communication module 314 shown in Figures 1 and 2 is a communication cable that transmits signals via a wired connection, but in other embodiments, the communication module 314 can be one that communicates wirelessly with the image display equipment, such as, but not limited to, a Bluetooth (registered trademark) module.

[0033] In this first embodiment, the connection unit 32 includes a connection tube 321 extending outward from the handle body 311 to be connected to the handle unit 31 and having a first connecting end 322 remote from the handle body 311.

[0034] The end face of the first connecting end portion 322 is formed with a recessed connecting recess 323 into which the replaceable insertion tube mechanism 4 can be inserted.

[0035] 2, 4 and 5, the first communicating pipe 33 extends along the connecting pipe 321 and is installed inside the connecting pipe 321. The first communicating pipe 33 has a first communicating pipe connector 331 exposed at the connecting tank 323 while communicating with the connecting tank 323 so as to be coaxial with the connecting tank 323.

[0036] The second communicating pipe 34 extends along the connecting pipe 321 and is installed inside the connecting pipe 321. The second communicating pipe 34 has a second communicating pipe connector 341 that is exposed at the connecting tank 323 while communicating with the connecting tank 323 so as to be coaxial with the connecting tank 323.

[0037] The signal connector 35 is exposed at an end surface of the first coupling end portion 322 of the connection pipe 321 .

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

[0039] 3, 4 and 5, the replaceable insertion tube mechanism 4 is removably attached to the first connecting end 322 of the connection tube 321. The replaceable insertion tube mechanism 4 includes an insertion tube unit 41, an imaging unit 42 attached to the insertion tube unit 41, a first connection tube 43 installed in the insertion tube unit 41 so as to pass through the insertion tube unit 41, and a second connection tube 44 installed in the insertion tube unit 41 so as to pass through the insertion tube unit 41.

[0040] In this first embodiment, the insertion tube unit 41 includes an insertion tube 411 that extends long so as to 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 the second connecting end 412 and the insertion end 413 that are opposite ends to each other.

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

[0042] The first connecting pipe 43 extends along the insertion tube 411 so as to penetrate the second connecting end 412 and the insertion end 413, and is installed inside the insertion tube 411. The first connecting pipe 43 has a first opening 430 exposed at the end face of the insertion end 413, and is detachably combined with the first communicating pipe connector 331 and has a first connecting pipe connector 431 protruding from the end face of the second connecting end 412.

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

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

[0045] In the first embodiment, the imager 421 may be, for example, one that uses a charge-coupled device (CCD), but is not limited to this.

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

[0047] As shown in Figures 2, 4 and 5, when the handle mechanism 3 and the replaceable insertion tube mechanism 4 are combined, the second connecting end 412 of the insertion tube 411 is coaxially inserted into the connecting tank 323 of the connecting tube 321, so that the first connecting tube connector 431 of the first connecting tube 43, the second connecting tube connector 441 of the second connecting tube 44 and the signal terminal 422 are inserted into the connecting tank 323, and the first connecting tube connector 431 is inserted into the first communicating tube connector 331 so as to be airtightly connected to the first communicating tube connector 331, the second connecting tube connector 441 is inserted into the second communicating tube connector 341 so as to be airtightly connected to the second communicating tube connector 341, and the signal terminal 422 is inserted into the signal connector 35 so as to be electrically connected to the signal connector 35 in a signal transmittable manner, thereby completing the combination.

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

[0049] When the endoscope device 200 of the present invention is used to guide the insertion of a catheter such as a nasogastric tube, a nasojejunal tube, a nasogastric feeding tube, or a naso-enteric tube, an insertion tube unit 41 having an insertion tube 411 having an appropriate size (outer diameter and length) based on the inner diameter of the catheter to be used in a situation where a guide wire (not shown) is not installed in the catheter, is attached to the handle mechanism 3, and the insertion tube 411 is inserted into the catheter, thereby improving the support force of the catheter with the insertion tube 411, making it easier to insert the catheter so that it can be advanced forward. In addition, 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 an image facing the direction in which the tip is heading, that is, take an image in the forward direction of the catheter.

[0050] An image captured by the camera 421 is transmitted to the image display device connected to the communication module 314 so as to be capable of transmitting signals, via a signal terminal 422 and a signal connector 35 which are connected to each other so as to be capable of transmitting signals.

[0051] Therefore, during the process of inserting the catheter, a medical professional can immediately obtain an image of the body cavity in front of the catheter, and can easily adjust the direction of advancement and observe the tissue of the body cavity.

[0052] When performing suction on the body cavity, for example when sucking liquid or gas, the suction valve 313 can be controlled to open and the suction equipment can generate negative pressure suction force in the correspondingly communicating first communicating tube 33 and first connecting tube 43, thereby performing suction on the liquid or gas in the body cavity in front of the insertion end 413.

[0053] When cleaning the body cavity in which the insertion operation is being performed, the water supply valve 312 can be controlled to open and liquid such as water provided from the water supply equipment can be sprayed forward of the insertion end 413 via the correspondingly communicating second communicating tube 34 and second connecting tube 44.

[0054] By inserting the insertion tube 411 of the endoscope device 200 of the present invention into a catheter and inserting or placing the catheter, it is possible to eliminate the drawback of inserting a conventional endoscope in a state of being arranged in parallel outside the catheter.

[0055] Similarly, when inserting a urinary catheter, an insertion tube unit 41 equipped with an insertion tube 411 having an appropriate outer diameter and length based on the inner diameter of the urinary catheter to be used is attached to the handle mechanism 3, and the insertion tube 411 is inserted into the urinary catheter, so that the camera 421 attached to the insertion tube 411 can approach the opening at the tip of the urinary catheter and take pictures in the forward direction of the urinary catheter.

[0056] This method allows the state of prostate enlargement to be assessed in real time through image monitoring during the process of inserting a urinary catheter, which is convenient for medical staff to directly replace the urinary catheter with one of an appropriate size.

[0057] Furthermore, by inserting the endoscopic device 200 of the present invention into the urinary catheter using the insertion tube 411, the supporting force of the urinary catheter can be improved by the insertion tube 411, so that the urinary catheter tube can be manufactured using a softer material and discomfort caused by the hardness of the material used in conventional urinary catheters can be significantly improved.

[0058] As shown in Figures 3, 4 and 5, in this first embodiment, the first connecting end 322 is formed with a connecting groove 323 so that the first connecting end 322 and the second connecting end 412 can be assembled by being inserted into each other.

[0059] However, in another embodiment, the second connecting end 412 can be formed with a recessed connecting groove, and the first connecting end 322 can be assembled by inserting the first connecting end 322 into the connecting groove of the second connecting end 412.

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

[0061] However, in another embodiment, the first connecting pipe connector 331, the second connecting pipe connector 341 and the signal connector 35 can be configured to protrude into the connecting tank 323 or protrude from the end face of the first connecting end 322, and accordingly, the first connecting pipe connector 431, the second connecting pipe connector 441 and the signal terminal 422 can be configured to be embedded in the second connecting end 412 and exposed at the end face of the second connecting end 412 or the connecting tank. With this configuration, when the first connecting end 322 and the second connecting end 412 are inserted and combined, the first connecting pipe connector 331 is inserted into the first connecting pipe connector 431, the second connecting pipe connector 341 is inserted into the second connecting 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 way.

[0062] As shown in FIG. 7, in another implementation of this first embodiment, the signal connector 35 and the signal terminal 422 are not configured to be inserted into each other, but are both configured in a planar shape, and when the first connecting end 322 and the second connecting end 412 are connected, the signal connector 35 and the signal terminal 422 come into contact with each other so as to be electrically connected to each other, thereby transmitting electricity and signals.

[0063] In addition, there are many ways to combine the first connecting end 322 and the second connecting end 412, and there are also many ways to combine the first connecting tube connector 331 and the first connecting tube connector 431 to communicate with each other, combine the second connecting tube connector 341 and the second connecting tube connector 441 to communicate with each other, and connect the signal connector 35 and the signal terminal 422 so as to be able to transmit signals, so the implementation is not limited to the above embodiments.

[0064] The second embodiment of the endoscopic device 200 of the present invention is similar to the first embodiment except for the structure of combining the connection unit 32 and the insertion tube unit 41, as shown in Figures 8 and 9. The differences between the first and second embodiments will be described below.

[0065] In this second embodiment, the connection unit 32 is attached to the outside of the first connecting end 322 so as to be able to move along the length of the connecting pipe 321, specifically, it further has a first screw-shaped annular body 325 encircled around the first connecting end 322, no connecting tank 323 is formed in the first connecting end 322, and the connecting pipe 321 further has an abutment annular portion 324 protruding radially from the outer circumferential surface of the first connecting end 322.

[0066] The first screw-type annular body 325 is screwed so as to be removably fitted around the second connecting end 412, and the tips of the first connecting end 322 and the second connecting end 412 are connected and fixed to each other.

[0067] That is, the first screw-type annular body 325 is screwed so as to be removably fitted around the second connecting end 412 so that the tip of the first connecting end 322 and the tip of the second connecting end 412 are connected and fixed to each other.

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

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

[0070] The second connecting end 412 of the insertion tube 411 has a screw thread 415 formed on its outer circumferential surface.

[0071] When assembling the handle mechanism 3 and the replaceable insertion tube mechanism 4, the first connecting tube connector 431, the second connecting tube connector 441, and the signal terminal 422 protruding from the second connecting end 412 are inserted into the first communicating tube connector 331, the second communicating tube connector 341, and the signal connector 35, respectively, until the tips of the first connecting end 322 and the second connecting end 412 abut against each other, and then the first annular portion 327 of the first screw-type annular body 325 is screwed into the thread 415 of the second connecting end 412 until the position limiting annular portion 326 abuts against the abutment annular portion 324 and is positionally limited, thereby completing the combination.

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

[0073] As shown in Figures 8 and 9, in this second embodiment, a first screw-type annular body 325 is fitted around the connecting pipe 321, and a screw thread 415 is formed on the outside of the second connecting end 412 of the insertion tube 411 for screwing the first screw-type annular body 325.

[0074] However, in other embodiments, the connection structure between the first screw ring 325 and the thread 415 can be replaced, that is, as shown in Fig. 10, the first screw ring 325 is not installed in the connection unit 32, and the thread 329 is formed on the outer circumferential surface of the first connecting end 322 of the connecting tube 321, and the insertion tube unit 41 can further include a second screw ring 416 configured to be encircled around the second connecting end 412 of the insertion tube 411 so as to be movable along the length direction of the insertion tube 411, and to be removably screwed around the thread 329 of the first connecting end 322. With this design, the first connecting end 322 of the connecting tube 321 and the second connecting end 412 of the insertion tube 411 can also be connected and fixed so that their tips interlock.

[0075] The third embodiment of the endoscope device 200 of the present invention is similar to the first embodiment, except for the structure of the first helical annular body 325 of the connection unit 32, as shown in FIG. 11 and FIG.

[0076] The endoscope device 200 of the third embodiment is also suitable for insertion into a catheter 5, and the catheter 5 has a connection portion 51 and a tube main body portion 52. The connection portion 51 and the tube main body portion 52 are integrally formed. As shown in Figures 11 and 12, a screw thread is formed on the outer circumferential surface of the connection portion 51, and the tube main body portion 52 has a tip opening 520 at an end opposite the connection portion 51. That is, the connection portion 51 and the end where the tip opening 520 is open are opposite ends.

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

[0078] The second annular portion 328 is spaced apart and surrounds the tube body 414 .

[0079] The camera 421 is configured so as to be able to face the direction of the tip of the tube main body 52 of the catheter 5 and take pictures.

[0080] The insertion tube 411 is configured so that the tube body portion 414 can be inserted into the tube main body portion 52 of the catheter 5 so that the insertion end portion 413 is at the opposite end to the connection portion 51 of the catheter 5, and so that the connection portion 51 of the catheter 5 can abut against the second connecting end portion 412 in a direction toward the connecting tube 321 and be positionally restricted.

[0081] When attaching the endoscopic device 200 to the catheter 5, the insertion end 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 positioned near the second connecting end portion 412 of the insertion tube 411.

[0082] At that time, the insertion end 413 of the insertion tube 411 approaches the tip opening 520 of the tube main body 52, so that the camera 421 can photograph the outside through the tip opening 520, and the second connecting tube 44 can spray liquid to the outside through the tip opening 520, and the first connecting tube 43 can suck liquid or gas through the tip opening 520.

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

[0084] As shown in FIG. 12, in this third embodiment, the second connecting end 412 and the tube body portion 414 of the insertion tube 411 are formed to have the same outer diameter. Therefore, 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, and therefore the inner diameter of the second annular portion 328 of the first spiral annular body 325 must be 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 414 of the insertion tube 411 can be made smaller than the outer diameter of the second connecting end 412, so that when the catheter 5 is inserted into the tube body 414, the connection portion 51 and the second connecting end 412 are formed to have the same outer diameter, and the insertion tube 411 is configured so that the connection portion 51 abuts against the second connecting end 412 in the direction toward the connecting tube 321 and is positionally restricted, so that the first annular portion 327 and the second annular portion 328 in the first spiral annular body 325 can be formed to have the same inner diameter.

[0086] Due to the connection structure with the catheter 5 in this third embodiment, the endoscopic device 200 of the present invention can be directly connected to and fixed to the catheter 5, making it easier to insert and place the catheter 5, increasing the success rate of insertion and placement, and improving the quality of medical care.

[0087] In addition, in each of the above embodiments, by connecting the first communicating pipe 33 and the first connecting pipe 43 to each other and connecting the second communicating pipe 34 and the second connecting pipe 44 to each other, suction and spraying can be performed respectively.

[0088] However, in other embodiments, the second communicating pipe 34 and the second connecting pipe 44 are not installed, and the first communicating pipe 33 can be combined with the water supply valve 312 and the suction valve 313 so as to communicate with the water supply valve 312 and the suction valve 313. When the first communicating pipe 33 and the first connecting pipe 43 are combined with each other, the first communicating pipe 33 and the first connecting pipe 43 have the functions of suction and spraying, and by operating the water supply valve 312 and the suction valve 313 separately, suction and spraying operations can be performed in the same pipeline.

[0089] The fourth embodiment of the endoscopic device 200 of the present invention is similar to the third embodiment, except that, as shown in Figures 14 and 15, the connection unit 32 does not have a first threaded ring for connecting to the catheter 5, the replaceable insertion tube mechanism 4 further includes a third threaded ring 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 the fourth embodiment, the second connecting end 412 has a connecting portion 417 and a bridging portion 418 connecting the connecting portion 417 to the tube body portion 414 .

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

[0092] The replaceable insertion tube mechanism 4 is combined with the connecting portion 417 of the second connecting end 412 in a manner that allows them to be removably inserted into the connecting tank 323 of the first connecting end 322, so that the first connecting tube 43 is communicated with the first communicating tube 33, the second connecting tube 44 is communicated with the second communicating tube 34, and the signal terminal 422 is connected to the signal connector 35 so as to be capable of transmitting signals. This combining method is the same as that in the first embodiment, and therefore a detailed description thereof will be omitted.

[0093] The insertion tube unit 41 further includes a third screw-type annular body 45 attached to the outside of the joint 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 screw-type annular body 45 has a third annular portion 451 that is rotatably attached to the connecting portion 418 of the second connecting end 412 and can move in a direction toward the insertion end 413 without separating from the second connecting end 412, and a fourth annular portion 452 that is enlarged in diameter relative to the third annular portion 451 and extends in a direction toward the insertion end 413.

[0095] When combining the replaceable insertion tube mechanism 4 with the catheter 5, the insertion end 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 positioned near the second connecting end 412 of the insertion tube 411.

[0096] Then, the third screw 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 encircled around 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 restricted in position. As a result, the catheter 5 is fixed to the outside of the insertion tube 411.

[0097] That is, the third annular portion 451 is configured so that the connection portion 51 of the catheter 5 can be abutted against the third annular portion 451 in the direction toward the connection unit 32 and be positionally restricted.

[0098] 16, when the outer diameter of the tube body 414 of the insertion tube 411 is smaller than the outer diameter of the second connecting end 412, the connection part 51 and the second connecting end 412 can be formed to have the same outer diameter, and when the catheter 5 is inserted into the insertion tube 411, the connection part 51 abuts against the link part 418 of the second connecting end 412 in the direction toward the connection unit 32 and is positionally restricted. Therefore, in the third screw annular body 45, the third annular part 451 and the fourth annular part 452 can be formed to have the same outer diameter and screwed to be fitted around the connection part 51.

[0099] As shown in FIGS. 17 and 18, the fifth embodiment of the endoscope device 200 of the present invention is similar to the fourth embodiment except for the structure in which the connection unit 32 and the insertion tube unit 41 are combined.

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

[0101] That is, the connection structure of the third screw ring 45 and the catheter 5 in the fourth embodiment is combined with the second embodiment shown in Figures 9 and 10, so that 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 screw ring 325 or the second screw ring 416, and the insertion tube unit 41 and the catheter 5 can be combined by the third screw ring 45.

[0102] As described above, the removable combination structure of the handle mechanism 3 and the replaceable insertion tube mechanism 4 allows medical personnel to select an replaceable insertion tube mechanism 4 having the required outer diameter or length and attach it to the handle mechanism 3 according to the needs of use. In other words, a single handle mechanism 3 can be used in combination with a plurality of replaceable insertion tube mechanisms 4 each having an insertion tube 411 with a different outer diameter or length. Furthermore, if the replaceable insertion tube mechanism 4 being used in the endoscopic device 200 is damaged, it is only necessary to replace the damaged replaceable insertion tube mechanism 4, and there is no need to replace the entire endoscopic device 200, which can significantly reduce the equipment costs of medical institutions.

[0103] Furthermore, by using the structure of the first screw ring 325 or the third screw ring 45, the catheter 5 surrounding the insertion tube 411 can be fixed, and the endoscopic device 200 can be installed coaxially with the catheter 5 to assist in the insertion and guiding of the catheter 5, thereby eliminating the drawback of inserting and guiding the conventional endoscope in a state parallel to the outside of the catheter.

[0104] In addition, since the connection portion 51 of the catheter 5 is looped around and screwed onto the first screw-type ring body 325 or the third screw-type ring body 45, the catheter 5 can be stably connected to the endoscopic device 200 and can be synchronously linked with the replaceable insertion tube mechanism 4, thereby increasing the success rate of insertion and placement.

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

[0106] The above embodiment is illustratively intended to explain the principles and effects of the present invention, and is not intended to limit the present invention. Those skilled in the art may make some changes or modifications to the above embodiment without departing from the spirit and scope of the present invention. Therefore, all changes and modifications made by those skilled in the art without departing from the gist of the present invention should be considered to be within the scope of protection of the present invention. [Industrial Applicability]

[0107] The present invention provides an endoscope apparatus in which an insertion tube mechanism can be replaced, and a replaceable insertion tube mechanism and a catheter used therein. [Explanation of symbols]

[0108] 200 Endoscopic 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 Pipe 322 First connecting end 323 Connected tank 324 Contact annular part 325 First Threaded Ring 326 Position limiting ring 327 First Circular Section 328 Second Circular Section 329 Thread 33 First connecting pipe 331 First connecting pipe connector 34 Second connecting pipe 341 Second connecting pipe connector 35 Signal Connector 4. Interchangeable insertion tube mechanism 41 Insertion tube unit 411 Insertion tube 412 Second connecting end 413 Insertion end 414 Tube body 415 thread 416 Second Threaded Ring 417 Connection section 418 Joint 42 Photography Unit 421 Camera 422 Signal terminal 43 First connecting pipe 430 First opening 431 First connecting pipe connector 44 Second connecting pipe 440 Second Opening 441 Second connecting pipe connector 45 Third Threaded Ring 451 Third Circular Section 452 Fourth Ring 5 Catheter 51 Connection 52 Pipe 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.

34. A catheter suitable for attachment to an endoscope apparatus according to any one of claims 1 to 9, The connecting portion and the pipe body portion are integrally formed, the connecting portion is configured such that the insertion end of the insertion tube is inserted into the connecting portion to surround the insertion tube, the connecting portion moves along the insertion tube to the connecting pipe, the connecting portion abuts against the first annular portion of the first screw-type annular body or the second connecting end of the insertion tube to be restricted in position, and the connecting portion is configured to be encircled and screwed into the second annular portion of the first screw-type annular body, A catheter characterized in that the tube main body is configured to accommodate the insertion end inserted into the connection portion, and a tip opening is opened at the end opposite the connection portion so that the camera can photograph the outside.

35. A catheter suitable for attachment to an endoscope apparatus according to any one of claims 10 to 21, The connecting portion and the pipe body portion are integrally formed, the connecting portion is configured such that the insertion end portion of the insertion tube is inserted into the connecting portion to surround the insertion tube, the connecting portion moves along the insertion tube to the connecting pipe, the connecting portion abuts against the third annular portion of the third screw-type annular body or the second connecting end portion of the insertion tube to be restricted in position, and the connecting portion is configured to be encircled and screwed into the fourth annular portion of the third screw-type annular body, A catheter characterized in that the tube main body is configured to accommodate the insertion end inserted into the connection portion, and a tip opening is opened at the end opposite the connection portion so that the camera can photograph the outside.

Images