Endoscopic cannula

Abstract

The invention relates to an endoscopic cannula, in particular to an endoscopic cannula comprising a catheter with a single working channel. The invention provides an endoscopic cannula. The endoscopic cannula comprises a body; the catheter is connected with the body, a single working channel is formed in the catheter, and the catheter is provided with a near-end opening close to the body and a far-end opening far away from the body; the catheter is covered with the inflation device, one expansion tail end, close to the far-end opening of the catheter, of the inflation device is made of elastic materials, and the end, close to the far-end opening of the catheter, of the inflation device is closed. The end, close to the near-end opening of the catheter, of the inflation device is communicated with external fluid through an air injection opening of an air injection piece, and therefore when air is injected into the space between the inflation device and the catheter from the air injection opening, the expansion tail end is expanded. The endoscopic cannula of the present invention is suitable for observation, sampling and / or treatment of lesions of the lung.

Description

Technical Field

[0001] The present invention relates to an internal viewing cannula, in particular to an internal viewing cannula comprising a catheter with a single working channel. Background Art

[0002] The endoscopic cannula can be used for observation, sampling and / or treatment of lesions in the lungs. Traditionally, in order to observe the lesions while sampling and / or treating, the catheter of the endoscopic cannula must have at least two channels, one of which is used to set up a camera device and the other is used to set up a working piece (for example, a sampling device or a flushing device).

[0003] Since the catheter of a traditional endoscopic cannula must have at least two channels, its diameter is limited, generally speaking, to no less than 3 mm, so that it may not be able to reach lesions located deep in the lungs. Summary of the invention

[0004] The conventional endoscopic cannula still has room for improvement. Therefore, an object of the present invention is to provide an endoscopic cannula, the catheter of which has a smaller diameter so as to reach the lesion located deep in the lung.

[0005] To achieve the above and other purposes, the present invention provides an internal viewing cannula, comprising:

[0006] ontology;

[0007] A catheter connected to the body, wherein the catheter has a single working channel inside and has a proximal opening adjacent to the body and a distal opening away from the body; and

[0008] An inflatable device covers the catheter, wherein an expansion end of the inflatable device adjacent to the distal opening of the catheter is made of elastic material, and one end of the inflatable device adjacent to the distal opening of the catheter is closed, and one end of the inflatable device adjacent to the proximal opening of the catheter is connected to the external fluid through the injection opening of the gas injection piece, whereby when gas is injected into the space between the inflatable device and the catheter from the gas injection opening, the expansion end will expand.

[0009] In one embodiment of the present invention, the catheter may be at least partially formed of a material that is opaque to X-rays near the distal opening.

[0010] In one embodiment of the present invention, the inner viewing cannula may further include:

[0011] The distal bending mechanism is connected to the body and the catheter, and comprises:

[0012] An operating handle, disposed outside the body and rotatably connected to the body;

[0013] a turntable, disposed inside the body and connected to the operating handle; and a cable, partially surrounding the turntable, with two ends of the cable respectively connected to two sides of the distal opening adjacent to the catheter,

[0014] Thereby, when the operating handle is rotated, the rotary disk will drive the cable to bend the catheter adjacent to the distal opening.

[0015] In one embodiment of the present invention, the inner viewing cannula may further include:

[0016] A catheter rotating mechanism, connected to the body and the catheter, comprises:

[0017] a rotating wheel connected to the conduit and rotatably connected to the body,

[0018] Thereby, when the rotating wheel is rotated, the rotating wheel will drive the catheter to rotate.

[0019] In one embodiment of the present invention, the inner viewing cannula may further include:

[0020] The sensing mechanism is connected with the distal bending mechanism and the catheter rotating mechanism to sense the bending state of the catheter near the distal opening and the rotating state of the catheter.

[0021] In one embodiment of the present invention, the catheter in the internal viewing cannula may further have a flushing port adjacent to the proximal opening.

[0022] In one embodiment of the present invention, the catheter in the internal viewing sleeve may have a snake-bone structure adjacent to the distal opening.

[0023] The endoscopic cannula of the present invention can effectively reduce the diameter of the catheter by including a catheter with a single working channel to reach the lesion located deep in the lung. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of an internal viewing cannula according to an embodiment of the present invention.

[0025] Figure 2 FIG. 4 is a schematic diagram of an inner viewing sleeve from another angle according to an embodiment of the present invention.

[0026] Figure 3 It is a cross-sectional schematic diagram of the expansion end of the inflation device of the internal viewing sleeve according to an embodiment of the present invention.

[0027] Figure 4 It is a schematic diagram of an exploded view of an inner viewing sleeve according to an embodiment of the present invention.

[0028] Figure 5 Schematic diagram of the use status of the internal viewing sleeve according to an embodiment of the present invention.

[0029] Reference numerals:

[0030] 10 Internal viewing tube;

[0031] 11 body;

[0032] 12 catheter;

[0033] 121 working channel;

[0034] 122 proximal opening;

[0035] 123 distal opening;

[0036] 124 flushing port;

[0037] 125 Snake bone structure;

[0038] 13 Inflatable device;

[0039] 131 Expansion end;

[0040] 132 gas injection parts;

[0041] 133 gas injection opening;

[0042] 14 distal bending mechanism;

[0043] 141 operating handle;

[0044] 142 turntable;

[0045] 143 Cable;

[0046] 15. Catheter rotation mechanism;

[0047] 151 Rotary Wheel;

[0048] 20 work pieces. DETAILED DESCRIPTION

[0049] In order to fully understand the purpose, features and effects of the present invention, the present invention is described in detail by means of the following specific embodiments. The description is as follows:

[0050] Example:

[0051] The inner viewing sleeve of the embodiment of the present invention is as follows Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 shown.

[0052] The internal viewing tube 10 of this embodiment includes a body 11. For example, the body 11 can be made of plastic or metal, but the present invention is not limited thereto.

[0053] The endoscopic cannula 10 of the present embodiment further includes a catheter 12 connected to the body 11 , wherein the catheter 12 has a single working channel 121 therein and has a proximal opening 122 adjacent to the body 11 and a distal opening 123 away from the body 11 .

[0054] The endoscopic sleeve 10 of the present embodiment further includes: an inflation device 13, which covers the catheter 12, wherein an expansion end 131 of the inflation device 13 adjacent to the distal opening 123 of the catheter 12 is made of elastic material, and one end of the inflation device 13 adjacent to the distal opening 123 of the catheter 12 is closed, while one end adjacent to the proximal opening 122 of the catheter 12 is connected to the external fluid through the gas injection opening 133 of the gas injection piece 132.

[0055] The expansion end 131 of the inflatable device 13 adjacent to the distal end opening 123 of the catheter 12 is made of elastic material. When gas is injected into the space between the inflatable device 13 and the catheter 12 from the gas injection opening 133, the expansion end 131 will expand into a Figure 1 When the gas is not injected into the space between the inflatable device 13 and the catheter 12, the expansion end 131 of the inflatable device 13 fits the catheter 12 so as to penetrate deep into the lungs.

[0056] The endoscopic cannula 10 of this embodiment, by including a catheter 12 having a single working channel 121 , can effectively reduce the diameter of the catheter 12 to less than 3 mm, so as to reach the lesion located deep in the lung.

[0057] In addition, the endoscopic cannula 10 of this embodiment includes an inflation device 13. When the distal opening 123 of the catheter 12 reaches a location adjacent to a lesion, the position of the distal opening 123 can be fixed by inflating the inflation end 131, or the bronchus can be dilated by inflating the inflation end 131, so as to achieve the purpose of treatment.

[0058] Based on the above, refer to Figure 5 The endoscopic cannula 10 of this embodiment can accommodate a working piece 20 through the single working channel 121 of the catheter 12, and the working piece includes but is not limited to a camera device, a sampling device or a flushing device.

[0059] For example, the endoscopic cannula 10 of this embodiment can first use a camera device as the working piece 20, and set the camera device in the working channel 121. The camera device is used to confirm that the distal opening 123 of the catheter 12 has reached the position adjacent to the lesion, and the position of the distal opening 123 is further fixed by expanding the expansion end 131. At this time, since the relative position between the distal opening 123 and the lesion has been fixed by the expanded expansion end 131, it is no longer necessary to observe the lesion through the camera device, so the camera device can be withdrawn from the working channel 121, and a working piece such as a sampling device or a flushing device is set in the working channel 121 instead, so as to sample and / or treat the lesion.

[0060] The endoscopic cannula 10 of this embodiment fixes the position of the distal opening 123 by expanding the expansion end 131 , thereby fixing the position between the distal opening 123 and the lesion to avoid displacement between the distal opening 123 and the lesion during the process of replacing different working pieces 20 .

[0061] The endoscopic cannula 10 of this embodiment further includes a distal bending mechanism 14 connected to the body 11 and the catheter 12 , but the present invention is not limited thereto.

[0062] The distal bending mechanism 14 includes: an operating handle 141, which is arranged on the outside of the main body 11 and is rotatably connected to the main body 11; a turntable 142, which is arranged on the inside of the main body 11 and is connected to the operating handle 141; and a cable 143, which is partially surrounded by the turntable 142 and has two ends respectively connected to two sides of the distal opening 123 adjacent to the catheter 12, whereby, when the operating handle 141 is rotated, the cable 143 will be driven to make the catheter 12 bend adjacent to the distal opening 123.

[0063] The endoscopic cannula 10 of the endoscopic cannula set 1 of the present embodiment further includes a catheter rotating mechanism 15 , which is connected to the body 11 and the catheter 12 , but the present invention is not limited thereto.

[0064] The catheter rotating mechanism 15 includes a rotating wheel 151 connected to the catheter 12 and rotatably connected to the body 11 , whereby when the rotating wheel 151 is rotated, the catheter 12 is driven to rotate.

[0065] By providing the distal bending mechanism 14 and / or the catheter rotating mechanism 15 , the user can more precisely control the position of the distal opening 123 of the catheter 12 so as to penetrate deeply into the lesion.

[0066] The endoscopic sleeve 10 of this embodiment further includes a sensing mechanism (not shown), which is connected to the distal bending mechanism 14 and the catheter rotation mechanism 15 to sense the bending state of the catheter 12 near the distal opening 123 and the rotation state of the catheter 12, but the present invention is not limited thereto.

[0067] The sensing mechanism enables the user to grasp the bending state of the catheter 12 near the distal opening 123 and the rotation state of the catheter 12 at any time, so as to facilitate penetration into the deep lungs.

[0068] In this embodiment, in the endoscopic cannula 10, the catheter 12 further has a flushing port 124 adjacent to the proximal opening 122, but the present invention is not limited thereto. By providing the flushing port 124, the endoscopic cannula 10 can flush the lesion while the working piece 20 remains in the working channel 121, thereby further improving the application flexibility of the endoscopic cannula 10.

[0069] In this embodiment, in the endoscopic cannula 10, the catheter 12 has a snake structure 125 near the distal opening 123, but the present invention is not limited thereto. The snake structure 125 ensures that the catheter 12 has sufficient rigidity and bending ability near the distal opening 123 to facilitate penetration into the deep lungs.

[0070] The present invention has been disclosed above with preferred embodiments, but those skilled in the art should understand that the embodiments are only used to describe the present invention and should not be interpreted as limiting the scope of the present invention. It should be noted that all changes and substitutions equivalent to the embodiments should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be based on the definition of the claims.

Claims

1. An internal viewing sleeve, characterized in that: include: ontology; A catheter connected to the body, wherein the catheter has a single working channel inside and has a proximal opening adjacent to the body and a distal opening away from the body; and an inflatable device covering the catheter, wherein an expansion end of the inflatable device adjacent to the distal opening of the catheter is made of elastic material, and one end of the inflatable device adjacent to the distal opening of the catheter is closed, and one end of the inflatable device adjacent to the proximal opening of the catheter is connected to an external fluid through an inflating opening of an inflating member, Thereby, when gas is injected into the space between the inflation device and the catheter from the gas injection opening, the expansion tip will expand.

2. The internal viewing sleeve according to claim 1, characterized in that: The catheter is at least partially constructed of a radiopaque material adjacent the distal opening.

3. The internal viewing sleeve according to claim 1, characterized in that: Further including: The distal bending mechanism is connected to the body and the catheter, and comprises: An operating handle, disposed outside the body and rotatably connected to the body; A turntable, disposed inside the body and connected to the operating handle; and A cable is partially wound around the rotating disk, and both ends of the cable are respectively connected to two sides of the distal opening adjacent to the catheter. Thereby, when the operating handle is rotated, the rotary disk will drive the cable to bend the catheter adjacent to the distal opening.

4. The internal viewing sleeve according to claim 3, characterized in that: Further including: The catheter rotating mechanism is connected to the body and the catheter, and comprises: a rotating wheel connected to the conduit and rotatably connected to the body, Thereby, when the rotating wheel is rotated, the rotating wheel will drive the catheter to rotate.

5. The internal viewing sleeve according to claim 4, characterized in that: Further including: The sensing mechanism is connected with the distal bending mechanism and the catheter rotating mechanism to sense the bending state of the catheter near the distal opening and the rotating state of the catheter.

6. The internal viewing sleeve according to claim 1, characterized in that: The catheter further has a flushing port adjacent to the proximal opening.

7. The internal viewing sleeve according to claim 1, characterized in that: The catheter has a snake structure adjacent to the distal opening.

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