TWM660519U - Internal viewing tube - Google Patents

Abstract

An endoscopic sleeve comprises: a body; 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 far from the body; and an inflation device covering the catheter, wherein an expansion end of the inflation device adjacent to the distal opening of the catheter is made of elastic material, and one end of the inflation device adjacent to the distal opening of the catheter is closed, while one end adjacent to the proximal opening of the catheter is connected to an external fluid through an injection opening of an injection piece, whereby when gas is injected from the injection opening into the space between the inflation device and the catheter, the expansion end will expand. The endoscopic cannula of this invention is suitable for observation, sampling and/or treatment of lung lesions.

Description

Internal viewing tube

This invention relates to an endoscopic cannula, and more particularly to an endoscopic cannula comprising a catheter having a single working channel.

Endoscopic cannulas can be used for observation, sampling and/or treatment of lung lesions. Traditionally, in order to observe 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 photographic device and the other is used to set up a working piece (e.g., a sampling device or a flushing device).

Since the catheter of the traditional endoscopic cannula must have at least two channels, the diameter is limited. Generally speaking, it cannot be less than 3mm, which may make it impossible to reach lesions deep in the lungs.

There is still room for improvement in traditional endoscopic cannulas. Therefore, one purpose of this invention is to provide an endoscopic cannula with a smaller diameter to reach lesions deep in the lungs.

To achieve the above and other purposes, the invention provides an endoscopic cannula, comprising: a body; 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 inflation device covering the catheter, wherein an expansion end of the inflation device adjacent to the distal opening of the catheter is made of elastic material, and one end of the inflation device adjacent to the distal opening of the catheter is closed, and one end adjacent to the proximal opening of the catheter is connected to an external fluid through an injection opening of an injection member, whereby when gas is injected from the injection opening into the space between the inflation device and the catheter, the expansion end will expand.

In one embodiment of the invention, the catheter adjacent to the distal opening may be at least partially formed of a material that is impermeable to X-rays.

In one embodiment of the present invention, the endoscopic sleeve may further include: a distal bending mechanism, which is connected to the body and the catheter, including: an operating handle, which is disposed outside the body and rotatably connected to the body; a turntable, which is disposed inside the body and connected to the operating handle; and a cable, part of which surrounds the turntable, and the two ends of which are respectively connected to the two sides of the distal opening of the catheter, so that when the operating handle is rotated, the cable will be driven to bend the catheter near the distal opening.

In one embodiment of the present invention, the endoscopic cannula may further include: a catheter rotation mechanism, which is connected to the body and the catheter, including: a rotating wheel, which is connected to the catheter and rotatably connected to the body, whereby when the rotating wheel is rotated, the catheter will be driven to rotate.

In one embodiment of the present invention, the endoscopic sleeve may further include: a sensing mechanism, which is connected to the distal bending mechanism and the catheter rotation mechanism to sense the bending state of the catheter near the distal opening and the rotation state of the catheter.

In one embodiment of the present invention, the catheter in the endoscopic cannula may further have a flushing port adjacent to the proximal opening.

In one embodiment of the present invention, the distal opening adjacent to the catheter in the endoscopic sleeve may have a snake bone structure.

The endoscopic cannula of this invention can effectively reduce the diameter of the catheter by including a catheter with a single working channel to reach lesions deep in the lungs.

10: Internal viewing tube

11: Body

12: Catheter

121: Working channel

122: Proximal opening

123: Remote opening

124: Rinse mouth

125: Snake bone structure

13: Inflatable device

131: Expansion end

132: Gas injection parts

133: Gas injection opening

14: Remote bending mechanism

141: Operating handle

142: Turntable

143: Cable

15: Guide tube rotation mechanism

151: Wheel

20: Workpiece

For the sake of clarity, the thickness or size of each layer in the figure is enlarged, omitted or outlined. At the same time, the size of each component does not fully reflect its actual size.

[Figure 1] is a schematic diagram of the endoscope sleeve of the present invention; [Figure 2] is a schematic diagram of the endoscope sleeve of the present invention from another angle; [Figure 3] is a cross-sectional schematic diagram of the inflation end of the inflation device of the endoscope sleeve of the present invention; [Figure 4] is a schematic diagram of the decomposition of the endoscope sleeve of the present invention; and [Figure 5] is a schematic diagram of the use state of the endoscope sleeve of the present invention.

In order to fully understand the purpose, features and effects of this invention, this invention is described in detail through the following specific embodiments, as follows: Embodiment: The endoscopic sleeve of the embodiment of this invention is shown in Figures 1, 2, 3, 4 and 5.

The endoscopic sleeve 10 of this embodiment includes: a body 11. For example, the body 11 can be made of plastic or metal, but the invention is not limited thereto.

The endoscopic cannula 10 of this embodiment also includes: a catheter 12, which is connected to the body 11, wherein the catheter 12 has a single working channel 121 inside, and has a proximal opening 122 adjacent to the body 11 and a distal opening 123 away from the body 11.

The endoscopic sleeve 10 of this embodiment also 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, and 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 a gas injection member 132.

An expansion end 131 of the inflatable device 13 adjacent to the distal 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 injection opening 133, the expansion end 131 will expand to the state shown in Figure 1. When 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.

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 to reach lesions located deep in the lungs.

In addition, the endoscopic cannula 10 of this embodiment includes an inflation device 13. When the distal opening 123 of the catheter 12 reaches the vicinity of the 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 to achieve the purpose of treatment.

In summary, referring to FIG5 , the endoscopic cannula 10 of this embodiment can accommodate a workpiece 20 through the single working channel 121 of the catheter 12, and the workpiece includes but is not limited to a photographic device, a sampling device or a flushing device.

For example, the endoscope cannula 10 of this embodiment can first use a photographic device as the working piece 20, and set the photographic device in the working channel 121. The photographic 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 by the photographic device, so the photographic device can be pulled out of the working channel 121, and a working piece such as a sampling device or a flushing device can be set in the working channel 121 instead, and the lesion can be sampled and/or treated.

The endoscopic sleeve 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, so as to avoid displacement between the distal opening 123 and the lesion during the process of replacing different working parts 20.

The endoscopic cannula 10 of this embodiment also includes: a distal bending mechanism 14, which is connected to the main body 11 and the catheter 12, but the invention is not limited thereto.

The distal bending mechanism 14 includes: an operating handle 141, which is disposed outside the body 11 and rotatably connected to the body 11; a turntable 142, which is disposed inside the body 11 and connected to the operating handle 141; and a cable 143, a portion of which surrounds the turntable 142, and the two ends of which are respectively connected to the two sides of the distal opening 123 adjacent to the conduit 12, whereby when the operating handle 141 is rotated, the cable 143 will be driven to bend the conduit 12 adjacent to the distal opening 123.

The endoscopic cannula 10 of the endoscopic cannula set 1 of this embodiment also includes: a cannula rotating mechanism 15, which is connected to the body 11 and the cannula 12, but the invention is not limited thereto.

The catheter rotating mechanism 15 includes: a rotating wheel 151, which is connected to the catheter 12 and rotatably connected to the body 11, so that when the rotating wheel 151 is rotated, the catheter 12 will be driven to rotate.

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 deeper into the lesion.

The endoscopic sleeve 10 of this embodiment also 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 invention is not limited thereto.

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 deep into the lungs.

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 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.

In this embodiment, the endoscopic cannula 10 has a snake-bone structure 125 near the distal opening 123 of the catheter 12, but the invention is not limited thereto. The arrangement of the snake-bone structure 125 ensures that the distal opening 123 near the catheter 12 has sufficient rigidity and bending ability to penetrate deep into the lungs.

This creation has been disclosed in the above with preferred embodiments, but those familiar with this technology should understand that these embodiments are only used to describe this creation and should not be interpreted as limiting the scope of this creation. It should be noted that all changes and substitutions equivalent to these embodiments should be included in the scope of this creation. Therefore, the scope of protection of this creation should be based on the scope defined by the patent application.

10: Internal viewing tube

11: Body

12: Catheter

121: Working channel

122: Proximal opening

123: Remote opening

124: Rinse mouth

13: Inflatable device

131: Expansion end

14: Remote bending mechanism

141: Operating handle

15: Guide tube rotation mechanism

151: Wheel

Claims (7)

An endoscopic cannula comprises: a body; 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 inflation device covering the catheter, wherein an expansion end of the inflation device adjacent to the distal opening of the catheter is made of elastic material, and one end of the inflation device adjacent to the distal opening of the catheter is closed, and one end adjacent to the proximal opening of the catheter is connected to an external fluid through an injection opening of an injection member, whereby when gas is injected from the injection opening into the space between the inflation device and the catheter, the expansion end will expand. An endoscopic cannula as described in claim 1, wherein the portion of the catheter adjacent to the distal opening is at least partially made of a material that is opaque to X-rays. The endoscopic cannula as described in claim 1, further comprising: a distal bending mechanism, which is connected to the body and the catheter, including: an operating handle, which is disposed outside the body and rotatably connected to the body; a turntable, which is disposed inside the body and connected to the operating handle; and a cable, part of which surrounds the turntable, and the two ends of which are respectively connected to the two sides of the distal opening of the catheter, so that when the operating handle is rotated, the cable will be driven to bend the catheter near the distal opening. The endoscopic cannula as described in claim 3, further comprising: a catheter rotation mechanism, which is connected to the body and the catheter, and includes: a rotating wheel, which is connected to the catheter and rotatably connected to the body, whereby when the rotating wheel is rotated, the catheter will be driven to rotate. The endoscopic cannula as described in claim 4 further comprises: a sensing mechanism connected to the distal bending mechanism and the catheter rotation mechanism to sense the bending state of the catheter near the distal opening and the rotation state of the catheter. An endoscopic cannula as described in claim 1, wherein the catheter further has a flushing port adjacent to the proximal opening. An endoscopic cannula as described in claim 1, wherein the catheter has a serpentine structure adjacent to the distal opening.

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