CN113558683A - Auxiliary connecting piece and soft endoscope auxiliary suction device - Google Patents

Abstract

The invention discloses an auxiliary connecting piece and a soft endoscope auxiliary suction device, wherein the auxiliary connecting piece comprises a connecting body, the rear end of the connecting body is provided with a main channel and an auxiliary channel, the auxiliary channel is smaller than the main channel and is positioned beside the main channel, the front end of the connecting body is provided with a main opening, and the main opening is simultaneously communicated with the main channel and the auxiliary channel; in the longitudinal projection direction, the main opening is opposite to at least partial areas of the main channel and the auxiliary channel respectively. The invention can improve the definition of visual field during operation, is more convenient for operation and improves the safety.

Description

Auxiliary connecting piece and soft endoscope auxiliary suction device

Technical Field

The invention belongs to the field of medical instruments, and particularly relates to an auxiliary connecting piece and a soft endoscope auxiliary suction device.

Background

The gastrointestinal endoscope minimally invasive surgery has the advantages of small wound and high surgery efficiency, and particularly has unique advantages in the gastrointestinal early tumor minimally invasive surgery, so the gastrointestinal endoscope minimally invasive surgery is worthy of popularization. In order to ensure smooth operation of the gastrointestinal endoscope minimally invasive surgery, a clear operation visual field is important, and therefore, in order to realize a good operation visual field in the minimally invasive surgery process, an operator needs to suck liquid or blood at an operation part in time to fully expose the visual field and manufacture a good operation space.

At present, the scope that gastrointestinal surgery used is single working channel, and this passageway is the passageway that the scope operation accessory got into the gastrointestinal cavity, also is the passageway of attracting gastrointestinal cavity liquid or blood, because this working channel internal diameter is little for scope suction is little, can not attract out gastrointestinal cavity intracavity liquid or blood high-efficiently, and this has seriously influenced the operation field of vision, has reduced the operation success rate and has increased patient's risk.

Later, the applicant developed an auxiliary connector which can conveniently suck out liquid or blood in the gastrointestinal cavity, but the auxiliary connector still has certain defects, which affect the visual field of the front end of the endoscope tube, bring safety hazards and affect the suction efficiency when sucking viscous liquid.

Disclosure of Invention

The invention aims to provide an auxiliary connecting piece and a soft endoscope auxiliary suction device, which can improve the definition of a visual field during operation, facilitate operation and improve safety.

The invention provides an auxiliary connecting piece, which comprises a connecting body, wherein the rear end of the connecting body is provided with a main channel and an auxiliary channel, the auxiliary channel is smaller than the main channel, the auxiliary channel is positioned beside the main channel, the front end of the connecting body is provided with a main opening, and the main opening is simultaneously communicated with the main channel and the auxiliary channel; in the longitudinal projection direction, the main opening is opposite to at least partial areas of the main channel and the auxiliary channel respectively.

In one embodiment, the outer wall of the connector is cylindrical.

In one embodiment, the outer wall of the connector is cylindrical or elliptical.

In one embodiment, the outer wall of the connecting body is arc-shaped or frustum-shaped.

In one embodiment, a blocking portion is disposed at a front end of the connecting body, the blocking portion is located in the main opening, and the blocking portion is located between the main channel and the auxiliary channel.

In one embodiment, the blocking portion is a flange, and the blocking portion protrudes towards the front end relative to the main channel and the auxiliary channel and is lower than the end edge of the main opening.

In one embodiment, the blocking portion is arc-shaped, and the concave portion of the arc-shaped blocking portion faces one side of the main channel.

In one embodiment, a flow guiding concave surface is arranged at the side position of the front end of the auxiliary channel.

In one embodiment, the number of the flow guide concave surfaces is two, and the two flow guide concave surfaces are respectively positioned on two sides of a central connecting line of the main channel and the auxiliary channel.

In one embodiment, a spacer neck is provided between the main channel and the inner wall of the main bore, the spacer neck having a diameter less than the diameter of the main channel.

The invention also provides a soft endoscope auxiliary suction device which comprises an endoscope tube, a suction tube and the auxiliary connecting piece of the preceding claim, wherein the front end of the endoscope tube is inserted into the main channel and matched with the main channel, and the front end of the suction tube is communicated with the auxiliary channel.

In one embodiment, the endoscope also comprises an outer sleeve which wraps the endoscope tube and the suction tube at the same time.

In one embodiment, the outer sleeve comprises a main pipe body, a first channel is formed in the main pipe body, a longitudinal side wall is attached to one side of the outer wall of the main pipe body, and a second channel is formed between the longitudinal side wall and the outer wall of the main pipe body; the endoscope tube is inserted into the first channel and matched with the inner wall of the first channel, and the suction tube is inserted into the second channel and matched with the inner wall of the second channel.

In one embodiment, a lens is arranged at the front end of the inner lens tube, and the end edge of the main opening is in the visual field range of the lens.

The invention also provides another soft endoscope auxiliary suction device which comprises an endoscope tube, a suction tube and the auxiliary connecting piece of the previous claim, wherein a lens is arranged at the front end of the endoscope tube; the front end of the endoscope tube is inserted into the main channel and matched with the main channel, and the front end of the suction tube is communicated with the auxiliary channel;

the front end of the connecting body is provided with a blocking part which is positioned in the main opening and is arranged between the main channel and the auxiliary channel;

the front end of the inner lens tube is provided with a lens, and the edge of the end part of the main opening is in the visual field range of the lens.

The technical scheme provided by the invention has the following advantages and effects:

the main opening, the main channel and the auxiliary channel are arranged on the connecting body of the auxiliary connecting piece, the path of the sucked liquid entering the auxiliary channel through the main opening is shortened, the channel is straight, the liquid or blood in the gastrointestinal cavity can be sucked out, the suction effect is improved, and the visual field at the front end of the endoscope tube is clearer; on the other hand, this main trompil respectively with main passageway, the at least partial region of auxiliary passage is relative, and the trompil region of main trompil is bigger, and the dead ahead of auxiliary passage has at least partial region to be in the state of opening, when sucking through the auxiliary passage, the place ahead region of minimize liquid process main passage reduces the sheltering from of liquid to main passageway place ahead camera lens sight, makes the field of vision clearer, simultaneously, can be better see the condition in auxiliary passage place ahead through the camera lens, further improve the security of operation.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles and effects of the invention.

Unless otherwise specified or defined, the same reference numerals in different figures refer to the same or similar features, and different reference numerals may be used for the same or similar features.

FIG. 1 is a schematic diagram of an external view of the soft endoscope auxiliary suction device according to a first embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of the auxiliary suction device of the flexible endoscope according to one embodiment of the present invention;

fig. 3 is an exploded view of the auxiliary suction device of the flexible endoscope according to the first embodiment of the present invention;

FIG. 4 is a schematic diagram of an external view of the auxiliary connecting member according to the first embodiment of the present invention;

FIG. 5 is a sectional view of the auxiliary connecting member in the longitudinal direction according to the first embodiment of the present invention;

FIG. 6 is a perspective view of the auxiliary connecting member in the short axis direction according to the first embodiment of the present invention;

FIG. 7 is a top view of the auxiliary connection member according to the first embodiment of the present invention;

FIG. 8 is a perspective view of the outer sleeve according to one embodiment of the present invention;

FIG. 9 is an end view of the outer sleeve according to a first embodiment of the present invention;

FIG. 10 is a schematic view of an optical path of the soft endoscope auxiliary suction device according to an embodiment of the present invention;

FIG. 11 is a schematic external view of the auxiliary suction device of a flexible endoscope according to a second embodiment of the present invention;

fig. 12 is a partial sectional view of the auxiliary suction device for a soft endoscope in accordance with the second embodiment of the present invention;

fig. 13 is an exploded view of the auxiliary suction device of the flexible endoscope in accordance with the second embodiment of the present invention;

FIG. 14 is an external view of the auxiliary connecting member according to the second embodiment of the present invention;

fig. 15 is a sectional view of the auxiliary link in the longitudinal direction in the second embodiment of the present invention;

FIG. 16 is a perspective view of the auxiliary connecting member in the short axis direction in the second embodiment of the present invention;

FIG. 17 is a top view of the auxiliary connection member according to the second embodiment of the present invention;

FIG. 18 is a side perspective view of the secondary connection member in accordance with a second embodiment of the present invention;

FIG. 19 is a schematic view of the optical path of the auxiliary suction device for a flexible endoscope according to the second embodiment of the present invention;

FIG. 20 is an external view of the auxiliary connecting member according to the third embodiment of the present invention;

fig. 21 is a sectional view of the auxiliary link in the longitudinal direction in the third embodiment of the present invention;

FIG. 22 is a top view of the auxiliary connection member according to the third embodiment of the present invention;

FIG. 23 is a side perspective view of the auxiliary connection member in a fourth embodiment of the present invention;

FIG. 24 is a side perspective view of a fifth embodiment of the invention, illustrating the auxiliary connection;

description of reference numerals:

10. auxiliary connecting piece, 11, connecting body, 12, main opening, 13, main channel, 14, auxiliary channel, 15, blocking part, 16, flow guide concave surface, 17, spacing neck, 18 and arc outer wall,

21. an inner lens tube 211, a lens 22, a suction tube 221, a flow control element 222 and a joint,

30. outer sleeve, 31, main tubular body, 311, first passageway, 32, longitudinal side wall, 321, second passageway.

Detailed Description

In order to facilitate an understanding of the invention, specific embodiments thereof will be described in more detail below with reference to the accompanying drawings.

Unless specifically stated or otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In the case of a real-world scenario incorporating the technical solution of the present invention, all technical and scientific terms used herein may also have meanings corresponding to the purpose of achieving the technical solution of the present invention.

As used herein, unless otherwise specified or defined, "first" and "second" … are used merely for name differentiation and do not denote any particular quantity or order.

As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items, unless specified or otherwise defined.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present.

As used herein, unless otherwise specified or defined, the terms "comprises," "comprising," and "comprising" are used interchangeably to refer to the term "comprising," and are used interchangeably herein.

It is needless to say that technical contents or technical features which are contrary to the object of the present invention or clearly contradicted by the object of the present invention should be excluded.

Example one

As shown in fig. 1 to 10, the soft endoscope auxiliary suction device includes an endoscope tube 21, a suction tube 22 and an auxiliary connector 10, wherein the auxiliary connector 10 is a key innovative component of the present embodiment.

The auxiliary connecting piece 10 comprises a connecting body 11, wherein the rear end of the connecting body 11 is provided with a main channel 13 and an auxiliary channel 14, the auxiliary channel 14 is smaller than the main channel 13, the auxiliary channel 14 is positioned at the side of the main channel 13, the front end of the connecting body 11 is provided with a main opening 12, and the main opening 12 is simultaneously communicated with the main channel 13 and the auxiliary channel 14; in the longitudinal projection direction, the main opening 12 is opposite to the main channel 13 and the auxiliary channel 14 respectively.

The main opening 12, the main channel 13 and the auxiliary channel 14 are arranged on the connecting body 11 of the auxiliary connecting piece 10, liquid or blood in a gastrointestinal cavity can be sucked out through the auxiliary channel 14, the suction effect is improved, and the visual field at the front end of the endoscope tube 21 is clearer; on the other hand, this main trompil 12 respectively with main passageway 13, the relative of auxiliary passage 14, the trompil region of main trompil 12 is bigger, the dead ahead of auxiliary passage 14 is in the state of opening, the space is bigger, when sucking through auxiliary passage 14, minimize the place ahead region of liquid through main passage 13, to viscous liquid, or the bulk material, can be faster suck, the evacuation, reduce the sheltering from of liquid to main passage 13 place ahead camera lens 211 sight, make the field of vision clearer, simultaneously, can be better through the condition in the view of auxiliary passage 14 the place ahead of camera lens 211, further improve the security of operation.

The inner wall of the front end of the connecting body 11 is columnar to form the main opening 12, and the inner wall of the rear end of the connecting body 11 is columnar to form the main channel 13 and the auxiliary channel 14 respectively; the outer wall of connector 11 is the column, preferably cylindricly or the cylindroid, and in this embodiment, the outer wall of connector 11 is the cylindroid, main trompil 12 forms the poroid of cylindroid main passageway 13 with be equipped with interval neck 17 between the inner wall of main trompil 12, the diameter of this interval neck 17 is less than the diameter of main passageway 13, this interval neck 17 can restrict the antedisplacement of interior mirror tube 21 front end, plays the effect of keeping out interior mirror tube 21. The outer wall of the connecting body 11, the main opening 12, the main channel 13 and the auxiliary channel 14 are of columnar structures, so that injection molding and demolding are facilitated, and the processing cost is low.

Please refer to fig. 1, 2 and 3, the front end of the endoscope tube 21 is inserted into the main channel 13 and is matched with the main channel 13, and the front end of the suction tube 22 is inserted into the sub-channel 14 and is connected and communicated with the sub-channel 14.

Please refer to fig. 8 and fig. 9, the auxiliary suction device for a flexible endoscope further includes an outer sheath 30, the outer sheath 30 includes a main tube 31, a first channel 311 is formed in the main tube 31, a longitudinal sidewall 32 is attached to one side of the outer wall of the main tube 31, and a second channel 321 is formed between the longitudinal sidewall 32 and the outer wall of the main tube 31; the endoscope tube 21 is inserted into the first channel 311 and is matched with the inner wall of the first channel 311, the suction tube 22 is inserted into the second channel 321 and is matched with the inner wall of the second channel 321, and the outer sleeve 30 wraps the endoscope tube 21 and the suction tube 22 at the same time. After the outer sleeve 30 is arranged, the suction pipe 22 can be better attached to the inner lens tube 21 and can better conform to the bending of the inner lens tube 21, and the suction pipe 22 is not easy to fold and form a loop, so that the use is more convenient.

After the outer sleeve 30 is adopted, the endoscope tube 21 and the suction tube 22 can be more closely arranged at the rear part of the auxiliary connecting piece 10, the displacement between the endoscope tube and the suction tube is reduced, the safety of the operation is improved, and the injury of the external sharp corner of the auxiliary connecting piece 10 to the human tissue is also reduced after the outer sleeve 30 is arranged.

Referring to fig. 10 again, a lens 211 is disposed at the front end of the endoscope tube 21, in order to ensure an effective view of the lens 211, especially to reduce the damage of the gastrointestinal mucosa caused by the front end of the auxiliary connector 10 located at one side of the auxiliary channel 14, it is necessary to ensure that the lens 211 can see at least the front end of the auxiliary connector 10 located at one side of the auxiliary channel 14, so in this embodiment, an angle β between an end edge of the main opening 12 and the lens 211 and an axis of the endoscope tube 21 is less than or equal to 70 degrees, and since an angle α of a view field range of the lens 211 of the endoscope tube 21 is 140 degrees, it is ensured that the end edge of the main opening 12 is within the view field of the lens 211, and an angle β between an end edge of the main opening 12 and the lens 211 and an axis of the endoscope tube 21, less than or equal to 70 degrees. It should be noted that there is a difference in the viewing angle α of the lens 211 of the different models of the inner lens tube 21. In order to ensure that the lens 211 can see the front end of the auxiliary connecting piece 10 on one side of the auxiliary channel 14, according to the size of the included angle β, the vertical distance H between the end edge of the main opening 12 of the auxiliary connecting piece 10 and the plane of the lens 211 of the endoscope tube 21 is calculated, and the vertical distance H is the length of the front part of the auxiliary connecting piece 10 on the side of the main opening 12, which provides a dimension parameter for manufacturing the auxiliary connecting piece 10.

Please refer to fig. 4 and 7, wherein two flow guiding concave surfaces 16 are disposed beside the front end of the secondary channel 14, the two flow guiding concave surfaces 16 are respectively disposed at two sides of a central connecting line of the main channel 13 and the secondary channel 14, an outer side of the flow guiding concave surface 16 is higher than an inner side, and an outer side of the flow guiding concave surface 16 is biased to the main channel 13. Through two water conservancy diversion concave surface 16, can be better with liquid drainage to accessory channel 14 department and suck away fast, improve the effect of liquid suction, simultaneously because this auxiliary connection spare 10's structural design, can form the dead angle in the both sides region between main entrance 13, accessory channel 14, cause liquid or thick accumulations of gluing the object easily, the outside of water conservancy diversion concave surface 16 is slightly to in main entrance 13 one side, can effectual solution this problem.

The suction pipe 22 is further provided with a flow control member 221 for controlling the magnitude of the negative pressure and thus the suction force at the sub-channel 14, and a connector 222 is provided at the rear end of the suction pipe 22 for connecting with a negative pressure device.

Example two

As shown in fig. 11 to 19, in the present embodiment, a blocking portion 15 is disposed at a front end of the connecting body 11, the blocking portion 15 is located in the main opening 12, and the blocking portion 15 is interposed between the main channel 13 and the sub-channel 14.

In this embodiment, the blocking portion 15 is a flange, and the blocking portion 15 protrudes in the front end direction relative to the main passage 13 and the sub passage 14 and is lower than the end edge of the main opening 12. The blocking portion 15 is arc-shaped, and the concave portion of the arc-shaped blocking portion 15 faces the main channel 13 side.

After the blocking portion 15 is disposed, under the action of negative pressure, the liquid entering through the main opening 12 flows to the side of the sub-channel 14, so as to prevent the liquid from accumulating on the side of the main channel 13 and affecting the visual field of the lens 211.

Furthermore, the connecting line between the end edge of the main opening 12 and the lens 211 is less than or equal to 70 degrees relative to the included angle between the axes of the endoscope tube 21; and the connecting line between the end edge of the blocking part 15 and the lens 211 is larger than or equal to 70 degrees relative to the included angle between the axes of the inner lens tube 21. It is necessary to ensure that the lens 211 can see the end edge of the main opening 12 on the side of the secondary channel 14, and that the blocking portion 15 does not obstruct the view of the secondary channel.

It should be noted that there is a difference in the viewing angle α of the lens 211 of the different models of the inner lens tube 21. In order to ensure that the lens 211 can see the front end of the auxiliary connecting piece 10 on one side of the auxiliary channel 14, according to the size of the included angle β, the vertical distance H between the end edge of the main opening 12 of the auxiliary connecting piece 10 and the plane of the lens 211 of the endoscope tube 21 is calculated, and the vertical distance H is the length of the front part of the auxiliary connecting piece 10 on the side of the main opening 12. This provides dimensional parameters for making the secondary connection 10. Meanwhile, according to the size of the included angle β, the height h of the blocking portion 15 can be calculated to ensure that the blocking portion 15 does not block the sight line.

EXAMPLE III

As shown in fig. 20 to 22, in this embodiment, a flow guiding concave surface is not disposed at a lateral position of the front end of the secondary channel 14, the structure of the auxiliary connecting member 10 in this embodiment is relatively simple, and the principle thereof can refer to the first embodiment, which is not described again.

It will be appreciated that the outer wall of the connector 11 is not limited to a cylindrical shape, but may have a slight taper or be curved, as shown in the following two embodiments.

Example four

As shown in FIG. 23, compared to the first embodiment, the front outer wall of the connecting body 11 has a slight arc shape to form an arc-shaped outer wall 18, which can facilitate the forward movement of the auxiliary connecting member 10, and the smoother front structure can reduce the damage to the gastrointestinal mucosa.

EXAMPLE five

As shown in FIG. 24, compared to the first embodiment, the outer wall of the connecting body 11 has a slight arc shape to form an arc-shaped outer wall 18, which can facilitate the forward movement of the auxiliary connecting member 10, and the more rounded front end structure can reduce the damage to the gastrointestinal mucosa. And a blocking part 15 is arranged at the front end of the connecting body 11, the blocking part 15 is positioned in the main opening 12, and the blocking part 15 is arranged between the main channel 13 and the auxiliary channel 14. The principle is described in the foregoing embodiments, and is not described in detail here.

The above embodiments are provided to illustrate, reproduce and deduce the technical solutions of the present invention, and to fully describe the technical solutions, the objects and the effects of the present invention, so as to make the public more thoroughly and comprehensively understand the disclosure of the present invention, and not to limit the protection scope of the present invention.

The above examples are not intended to be exhaustive of the invention and there may be many other embodiments not listed. Any alterations and modifications without departing from the spirit of the invention are within the scope of the invention.

Claims (15)

1. The auxiliary connecting piece is characterized by comprising a connecting body, wherein the rear end of the connecting body is provided with a main channel and an auxiliary channel, the auxiliary channel is smaller than the main channel, the auxiliary channel is positioned beside the main channel, the front end of the connecting body is provided with a main opening, and the main opening is communicated with the main channel and the auxiliary channel at the same time; in the longitudinal projection direction, the main opening is opposite to at least partial areas of the main channel and the auxiliary channel respectively.

2. The complementary connector of claim 1, wherein the outer wall of the connector body is cylindrical.

3. The auxiliary connector as claimed in claim 2, wherein the outer wall of the connector is cylindrical or elliptic cylindrical.

4. The auxiliary connecting member as claimed in claim 1, wherein the outer wall of the connecting body has an arc shape or a frustum shape.

5. The auxiliary connecting member according to any one of claims 1 to 4, wherein a blocking portion is provided at a front end of the connecting body, the blocking portion is located in the main opening, and the blocking portion is interposed between the main passage and the auxiliary passage.

6. The connector of claim 5, wherein the blocking portion is a flange that projects toward the front end of the primary and secondary passages relative to the primary and secondary passages and is lower than the end edge of the primary opening.

7. The secondary connection of claim 6, wherein the dam is arcuate with the concavity of the arcuate dam facing the side of the primary channel.

8. An auxiliary connection member as claimed in any one of claims 1 to 4, wherein a flow guiding concave surface is provided at a position lateral to a front end of said secondary channel.

9. The auxiliary connecting member as claimed in claim 8, wherein there are two flow guiding concave surfaces, and the two flow guiding concave surfaces are respectively located at two sides of the central connecting line of the main channel and the auxiliary channel.

10. An accessory connector as claimed in any one of claims 1 to 4, wherein a spacer neck is provided between the main passage and the inner wall of the main aperture, the spacer neck having a diameter less than the diameter of the main passage.

11. The auxiliary connecting member according to any one of claims 1 to 4, further comprising an outer sleeve disposed at a rear end of the connecting body, wherein a hollow portion inside the outer sleeve communicates with the main passage and the auxiliary passage.

12. An auxiliary suction device for a flexible endoscope, which is characterized by comprising an endoscope tube, a suction tube and the auxiliary connecting piece of the preceding claim, wherein the front end of the endoscope tube is inserted into the main channel and matched with the main channel, and the front end of the suction tube is communicated with the auxiliary channel.

13. A flexible endoscope auxiliary suction device according to claim 12, further comprising an outer tube provided at a rear end of said connecting body, said outer tube comprising a main tube body in which a first passage is formed, a longitudinal side wall attached to a side of an outer wall of said main tube body, and a second passage formed between said longitudinal side wall and said outer wall of said main tube body; the endoscope tube is inserted into the first channel and matched with the inner wall of the first channel, and the suction tube is inserted into the second channel and matched with the inner wall of the second channel.

14. A soft endoscope auxiliary suction device according to claim 12, wherein a lens is provided at the front end of said endoscope tube, and the end edge of said main opening is within the visual field of said lens.

15. An auxiliary suction device for a soft endoscope, which is characterized by comprising an endoscope tube, a suction tube and the auxiliary connecting piece of the previous claim, wherein a lens is arranged at the front end of the endoscope tube; the front end of the endoscope tube is inserted into the main channel and matched with the main channel, and the front end of the suction tube is communicated with the auxiliary channel;

the front end of the connecting body is provided with a blocking part which is positioned in the main opening and is arranged between the main channel and the auxiliary channel;

the front end of the inner lens tube is provided with a lens, and the edge of the end part of the main opening is in the visual field range of the lens.

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