TWI882831B - Endoscopic cannula set - Google Patents

Abstract

An endoscopic cannula assembly includes: an endoscopic cannula including: 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; a stopper, which is sleeved on the distal opening of the catheter and has a non-circular stopper opening and a stopper mark; and a working piece, whose cross section has a shape matching the stopper opening of the stopper and has at least one positioning mark. The endoscopic cannula assembly of the present invention is suitable for observation, sampling and/or treatment of lung lesions.

Description

Endoscopic cannula set

The present invention relates to an endoscopic cannula assembly, and in particular to an endoscopic cannula assembly comprising an endoscopic cannula and a workpiece, wherein the endoscopic cannula has a stopper, and the cross-section of the workpiece has a shape that matches the stopper opening of the stopper.

The endoscopic cannula set can be used for observation, sampling and/or treatment of lung lesions. Traditionally, the endoscopic cannula set includes an endoscopic cannula and a working piece (e.g., a photographic device, a sampling device, or a flushing device), wherein the working piece can reach the lesion through the working channel in the catheter of the endoscopic cannula.

However, when using the traditional endoscopic cannula, it is impossible to prevent the working part from rotating in the working channel of the catheter, which can easily lead to misjudgment of the location of the lesion.

There is still room for improvement in the traditional endoscopic cannula. Therefore, one purpose of the present invention is to provide an endoscopic cannula assembly that can limit the rotation of the working piece in the working channel of the catheter to avoid misjudging the location of the lesion.

To achieve the above and other purposes, the present invention provides an endoscopic cannula assembly, including: an endoscopic cannula, which includes: 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 a stopper, which is sleeved on the distal opening of the catheter and has a non-circular stopper opening and a stopper mark; and a working piece, whose cross-section has a shape matching the stopper opening of the stopper and has at least one positioning mark.

In one embodiment of the present invention, in the endoscopic cannula assembly, the stopper may be at least partially made of a material that is impenetrable to X-rays.

In one embodiment of the present invention, in the endoscopic sleeve assembly, the limiter may also have a plurality of guide members, and the plurality of guide members extend from the limiter opening of the limiter toward the inner edge of the limiter.

In one embodiment of the present invention, in the endoscope sleeve assembly, the working piece may be a photographic device, a sampling device or a flushing device.

In one embodiment of the present invention, the endoscopic cannula in the endoscopic cannula assembly may further include: an inflatable device, which 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 adjacent to the proximal opening of the catheter is connected to the external fluid through the gas injection opening of a gas injection member, Thereby, when gas is injected from the gas injection opening into the space between the inflatable device and the catheter, the expansion end will expand.

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

In one embodiment of the present invention, the catheter in the endoscopic cannula assembly may have a snake bone structure near the distal opening.

The endoscopic cannula assembly of the present invention can limit the rotation of the working part in the working channel of the catheter by providing the endoscopic cannula with a limiting part, and the working part has a shape that matches the limiting opening of the limiting part, so as to avoid misjudging the position of the lesion.

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: Limiting parts

131:Limited opening

132: Limit mark

133: Guide piece

14: Inflatable device

141: Expansion end

142: Gas injection parts

143: Gas injection opening

15: Remote bending mechanism

151: Operating handle

152: Turntable

153: Cable

16: Guide tube rotation mechanism

161: Wheel

20: Workpiece

201: Positioning mark

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 inner view sleeve assembly of the embodiment of the present invention;〔Figure 2〕is a schematic diagram of the inner view sleeve assembly of the embodiment of the present invention from another angle;〔Figure 3〕is an enlarged schematic diagram of the stopper of the inner view sleeve assembly of the embodiment of the present invention;〔Figure 4〕is a schematic diagram of the stopper in the inner view sleeve of the inner view sleeve assembly of the embodiment of the present invention;〔Figure 5〕is a cross-sectional schematic diagram of the expansion end of the inflation device of the inner view sleeve of the inner view sleeve assembly of the embodiment of the present invention; and〔Figure 6〕is a decomposed schematic diagram of the inner view sleeve of the inner view sleeve assembly of the embodiment of the present invention.

In order to fully understand the purpose, features and effects of the present invention, the present invention is described in detail through the following specific embodiments, as follows:

Implementation example:

The endoscopic cannula assembly of the embodiment of the present invention is shown in Figures 1, 2, 3, 4, 5 and 6.

The endoscopic sleeve assembly 1 of the embodiment of the present invention includes: an endoscopic sleeve 10; and a working piece 20.

The endoscopic cannula 10 in the endoscopic cannula set 1 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.

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

The endoscopic sleeve 10 of this embodiment also includes: a stopper 13, which is sleeved on the distal opening 123 of the catheter 12, and has a non-circular stopper opening 131 and a stopper mark 132. In this embodiment, the stopper opening 131 is in the shape of a square with arc corners, but the present invention is not limited thereto, as long as it is a non-circular shape. In this embodiment, the stopper mark 132 is a hole located on the side of the stopper 13, but the present invention is not limited thereto. In this embodiment, the limiter 13 also has a plurality of guide members 133, which extend from the limit opening 131 of the limiter 13 toward the inner edge of the limiter 13 to guide the workpiece 20 to pass through the limit opening 131, but the present invention is not limited to this.

In this embodiment, the stopper 13 is made of metal, but the present invention is not limited thereto. By making the stopper 13 of metal that is not transparent to X-rays, the stopper 13 can be clearly imaged in medical images using X-rays as an energy source, so that the user can confirm the position of the stopper 13 in the human body.

The cross-section of the working piece 20 in the endoscopic cannula assembly 1 of this embodiment has a shape that matches the limiting opening 131 of the limiting piece 13, and has at least one positioning mark 201. The working piece 20 can be a photographic device, a sampling device, or a flushing device, but the present invention is not limited thereto.

For example, the endoscope cannula assembly 1 of the present embodiment can first use a photographic device as the working piece 20, and place the photographic device in the working channel 121 of the endoscope cannula 10, and use the photographic device to confirm that the distal opening 123 of the catheter 12 has reached the position adjacent to the lesion. Subsequently, the photographic device can be withdrawn from the working channel 121, and a working piece 20 such as a sampling device or a flushing device can be placed in the working channel 121 to sample and/or treat the lesion. In the process of using and replacing different working pieces 20, the endoscopic cannula assembly 1 of this embodiment can limit the rotation of the working piece 20 in the working channel 121 of the catheter 12 by virtue of the technical feature that the cross-section of the working piece 20 has a shape that matches the limiting opening 131 of the limiting piece 13, so as to avoid misjudging the position of the lesion. In addition, the relative position between the endoscopic cannula 10 and the working piece 20 can be confirmed by matching the positioning mark 201 of the working piece 20 with the limiting mark 132 of the limiting piece 13. In a preferred embodiment, the working piece 20 also has a positioning mark 201 at one end near the operator, so that the operator can confirm the relative position between the endoscopic cannula 10 and the working piece 20 when the working piece 20 has penetrated into the catheter 12.

The endoscopic cannula 10 of the endoscopic cannula set 1 of this embodiment also includes: an inflation device 14, which covers the catheter 12, but the present invention is not limited to this.

Among them, an expanded end 141 of the inflation device 14 adjacent to the distal opening 123 of the conduit 12 is made of elastic material, and one end of the inflation device 14 adjacent to the distal opening 123 of the conduit 12 is closed, and one end adjacent to the proximal opening 122 of the conduit 12 is connected to the external fluid through the gas injection opening 143 of a gas injection member 142.

An expansion end 141 of the inflatable device 14 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 14 and the catheter 12 from the injection opening 143, the expansion end 141 will expand to the state shown in Figure 1. When gas is not injected into the space between the inflatable device 14 and the catheter 12, the expansion end 141 of the inflatable device 14 fits the catheter 12 so as to penetrate deep into the lungs.

In the embodiment including the inflatable device 14, when a photographic device is used as the working piece 20 and the photographic device is used to confirm that the distal opening 123 of the catheter 12 has reached the position adjacent to the lesion, the position of the distal opening 123 can be further fixed by expanding the expansion end 141. In this way, the position between the distal opening 123 and the lesion can be fixed to avoid displacement between the distal opening 123 and the lesion during the process of replacing different working pieces 20.

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

The distal bending mechanism 15 includes: an operating handle 151, which is disposed outside the body 11 and rotatably connected to the body 11; a turntable 152, which is disposed inside the body 11 and connected to the operating handle 151; and a cable 153, a portion of which surrounds the turntable 152, and the two ends of which are respectively connected to the two sides of the distal opening 123 adjacent to the conduit 12, so that when the operating handle 151 is rotated, the cable 153 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 rotation mechanism 16, which is connected to the body 11 and the cannula 12, but the present invention is not limited thereto.

The catheter rotating mechanism 16 includes: a rotating wheel 161, which is connected to the catheter 12 and rotatably connected to the body 11, so that when the rotating wheel 161 is rotated, the catheter 12 will be driven to rotate.

By providing the distal bending mechanism 15 and/or the catheter rotating mechanism 16, 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 cannula 10 of the endoscopic cannula assembly 1 of this embodiment also includes: a sensing mechanism (not shown), which is connected to the distal bending mechanism 15 and the catheter rotation mechanism 16 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 to this.

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 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, which further enhances 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 present 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.

The present invention has been disclosed in the above with preferred embodiments, but those familiar with the art should understand that these 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 these embodiments should be included in the scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined by the patent application.

1: Endoscopic cannula assembly 10: Endoscopic cannula 11: Body 12: Catheter 121: Working channel 122: Proximal opening 123: Distal opening 124: Flushing port 13: Stopper 14: Inflatable device 141: Expansion end 15: Distal bending mechanism 151: Operating handle 16: Catheter rotation mechanism 161: Rotating wheel 20: Working piece 201: Positioning mark

Claims (10)

An endoscopic cannula assembly includes: An endoscopic cannula, which includes: A body; A catheter, which is 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 A stopper, which is sleeved on the distal opening of the catheter, has a non-circular stopper opening, and has a stopper mark; and A working piece, whose cross-section has a shape matching the stopper opening of the stopper, and has at least one positioning mark. An endoscopic cannula assembly as described in claim 1, wherein the stopper is at least partially made of a material that is opaque to X-rays. As described in claim 1, the endoscopic sleeve assembly, wherein the limiting member also has a plurality of guide members, and the plurality of guide members extend from the limiting opening of the limiting member toward the inner edge of the limiting member. An endoscopic cannula assembly as described in claim 1, wherein the working piece is a photographic device, a sampling device or a flushing device. The endoscopic cannula assembly as described in claim 1, wherein the endoscopic cannula further comprises: an inflatable device, which 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 adjacent to the proximal opening of the catheter is connected to the external fluid through the injection opening of an inflating member, thereby, when gas is injected from the injection opening into the space between the inflatable device and the catheter, the expansion end will expand. The endoscopic cannula assembly as described in claim 1, wherein the endoscopic cannula further comprises: A distal bending mechanism, which is connected to the body and the catheter, comprising: 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 two ends of which are respectively connected to two sides of the distal opening adjacent to the catheter, Whereby, when the operating handle is rotated, the cable will be driven to bend the catheter adjacent to the distal opening. The endoscopic cannula assembly as described in claim 6, wherein the endoscopic cannula further comprises: A catheter rotation mechanism, which is connected to the body and the catheter, comprising: A rotating wheel, which is connected to the catheter and rotatably connected to the body, whereby when the rotating wheel is rotated, the catheter is driven to rotate the catheter. The endoscopic cannula assembly as described in claim 7, wherein the endoscopic cannula 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. The endoscopic cannula assembly as described in claim 1, wherein the catheter further has a flushing port adjacent to the proximal opening. An endoscopic cannula assembly as described in claim 1, wherein the catheter has a serpentine structure adjacent to the distal opening.

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