CN215305682U - Auxiliary connecting piece and soft endoscope auxiliary suction device - Google Patents

Abstract

The utility model 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, the auxiliary channel is positioned at the side of the main channel, the front end of the connecting body is provided with a main opening, at least part of the main opening is opposite to the main channel, and the main opening is simultaneously communicated with the auxiliary channel. The utility model can be conveniently used in gastrointestinal surgery, and can accurately and quickly absorb the liquid at the front end of the soft endoscope, thereby improving the visual field of the surgery and the success rate of the surgery.

Description

Auxiliary connecting piece and soft endoscope auxiliary suction device

Technical Field

The utility model 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.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an auxiliary connecting piece and a soft endoscope auxiliary suction device, which can be conveniently used in gastrointestinal surgery, can accurately and quickly suck liquid at the front end of a soft endoscope, and can improve the surgical field and the success rate of the surgery.

The utility model 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, at least part of the main opening is opposite to the main channel, and the main opening is simultaneously communicated with the auxiliary channel.

In one embodiment, the rear end of the connecting body is provided with a first cylindrical side wall, a second cylindrical side wall and two transition side walls, and the first cylindrical side wall and the second cylindrical side wall are connected through the two transition side walls.

In one embodiment, the connecting body has a front section and a rear section, the main opening is located on the front section, and the main channel and the auxiliary channel are located on the rear section.

In one embodiment, the front end of the connecting body is tapered, and a front guide surface is formed on the surface of the front end of the connecting body.

In one embodiment, the angle of the front guide surface on the side close to the main passage with respect to the axial direction of the main passage is smaller than the angle of the front guide surface on the side close to the sub passage with respect to the axial direction of the main passage.

In one embodiment, a secondary opening is further provided at the front end of the connecting body, the secondary opening being at least partially opposite the secondary channel.

In one embodiment, the primary bore is coaxial with the primary passage and the secondary passage is coaxial with the secondary bore.

In one embodiment, a rear guide surface is provided at the rear end of the connecting body, the rear guide surface being located at least at the rear of the secondary channel.

In one embodiment, the outer wall of the main passage is cylindrical and extends to the outside of the main opening in the direction of the front end.

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.

In one embodiment, a buffer cavity is formed at the front end of the connecting body, and the main channel, the auxiliary channel and the main opening are communicated through the buffer cavity.

In one of them embodiment, the connector includes adapter sleeve and side pipe, main passageway, main trompil are located the front end and the rear end of this adapter sleeve respectively, the accessory channel is located the rear end of side pipe is equipped with first side opening at the lateral wall of adapter sleeve, is equipped with the second side opening at the lateral wall of side pipe, the adapter sleeve is connected with the side pipe and first side opening and second side opening correspond, main trompil through this first side opening, second side opening with the accessory channel communicates with each other.

In one embodiment, at least a partial region of the outer side wall of the side pipe is an inner concave surface, and the inner concave surface is attached to the outer wall of the connecting sleeve.

In one embodiment, the front end of the side tube has an opening to form a secondary aperture.

The utility model also provides a soft endoscope auxiliary suction device which comprises an endoscope tube, a suction tube and the auxiliary connecting piece, 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.

The utility model also provides another soft endoscope auxiliary suction device which comprises an inner endoscope tube and the auxiliary connecting piece, wherein the front end of the inner endoscope tube is inserted into the main channel and matched with the main channel, the front end of a suction tube is communicated with the auxiliary channel, and the side tube extends towards the rear end or is connected with the suction tube.

In one embodiment, at least two branch pipes are formed at the rear end of the suction pipe.

In one embodiment, one of the branch pipes is coaxial with the main portion of the suction pipe, and the other branch pipe is skewed with respect to the main portion of the suction pipe.

In one embodiment, a connection tube is arranged at the rear end of the connection body, the auxiliary channel is arranged in the connection tube, and a connector is arranged at the front end of the suction tube and inserted into the auxiliary channel to enable the suction tube to be communicated with the auxiliary channel.

In one embodiment, a flow regulating member is provided on the suction pipe.

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

according to the auxiliary connecting piece, the main channel is communicated with the endoscope tube, the auxiliary channel is communicated with the suction tube, liquid or blood in the cavity at the front end of the endoscope tube can be sucked through the suction tube, the visual field at the front end of the endoscope tube can be fully exposed, and the safety of an operation is improved; in addition, because the front end of the auxiliary connecting piece sucks liquid through the main opening, the liquid sucking direction (namely the main opening direction) is approximately superposed with the direction (namely the main channel direction) faced by the camera in the inner lens tube, and the part irradiated by the camera, namely the liquid sucking part, is basically consistent, so that the operation error and the operation risk caused by the inconsistency of the two parts are avoided; moreover, the suction pipe for liquid suction is positioned at the side parts of the main channel and the inner endoscope pipe, so that the transverse size of the whole soft endoscope auxiliary suction device is small, and meanwhile, the soft endoscope auxiliary suction device can well conform to the bending of the front end of an endoscope and is very suitable for performing gastrointestinal minimally invasive surgery; finally, because the front end of the auxiliary connecting piece can push the human tissue open, the human tissue is prevented from being lapped at the front end of the endoscope tube to influence the visual field and the operation space, the front end area of the auxiliary connecting piece is ensured to be a visual area under the endoscope tube, and the operation visual field is very good.

Drawings

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

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 general view of the soft endoscope auxiliary suction device according to one embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of FIG. 1 with the inner lens tube removed;

FIG. 3 is an exploded view of FIG. 1;

FIG. 4 is a first directional structural diagram of the auxiliary connecting member according to the first embodiment of the present invention;

FIG. 5 is a structural diagram of the auxiliary connecting member in a second direction according to the first embodiment of the present invention;

FIG. 6 is a longitudinal cross-sectional view of the auxiliary connecting member according to a first embodiment of the present invention;

FIG. 7 is a diagram illustrating the position of the suction path with respect to the field of view in accordance with one embodiment of the present invention;

FIG. 8 is a general view of the soft endoscope auxiliary suction device according to the second embodiment of the present invention;

FIG. 9 is a partial cross-sectional view of FIG. 8 with the inner lens tube removed;

FIG. 10 is an exploded view of FIG. 8;

FIG. 11 is a first directional structural diagram of the auxiliary connecting member according to the second embodiment of the present invention;

FIG. 12 is a second directional block diagram of the auxiliary connecting member according to the second embodiment of the present invention;

FIG. 13 is a longitudinal cross-sectional view of a second embodiment of the present invention, showing the auxiliary connection member;

fig. 14 is an overall view of the soft endoscope auxiliary suction device according to the third embodiment of the present invention;

FIG. 15 is an exploded view of FIG. 14;

FIG. 16 is a partial cross-sectional view of FIG. 14 with the inner lens tube removed;

FIG. 17 is a partial cross-sectional view of a third embodiment of the present invention, showing the auxiliary connection member;

fig. 18 is an overall view of the soft endoscope auxiliary suction device according to the fourth embodiment of the present invention;

FIG. 19 is an exploded view of FIG. 18;

FIG. 20 is a block diagram of the auxiliary connection member according to the fourth embodiment of the present invention;

fig. 21 is a longitudinal sectional view of the auxiliary link according to the fourth embodiment of the present invention;

FIG. 22 is a cross-sectional view of a fourth embodiment of the present invention, showing the auxiliary connection member;

fig. 23 is an overall view of the soft endoscope auxiliary suction device according to the fifth embodiment of the present invention;

FIG. 24 is an exploded view of FIG. 23;

FIG. 25 is a schematic view of a fifth embodiment of the present invention, illustrating the auxiliary connection member;

fig. 26 is a longitudinal sectional view of the auxiliary connecting member according to the fifth embodiment of the present invention;

fig. 27 is an overall view of the soft endoscope auxiliary suction device according to the sixth embodiment of the present invention;

FIG. 28 is an exploded view of FIG. 27;

fig. 29 is a partial sectional view of the soft endoscope auxiliary suction device according to the sixth embodiment of the present invention;

FIG. 30 is a block diagram of the auxiliary connection member according to the sixth embodiment of the present invention;

fig. 31 is a longitudinal sectional view of the auxiliary link in a sixth embodiment of the present invention;

fig. 32 is an overall view of the soft endoscope auxiliary suction device according to the seventh embodiment of the present invention;

FIG. 33 is an exploded view of FIG. 32;

fig. 34 is a partial sectional view of the soft endoscope auxiliary suction device according to the seventh embodiment of the present invention;

FIG. 35 is a schematic diagram of an auxiliary connection unit according to a seventh embodiment of the present invention;

fig. 36 is an overall view of the soft endoscope auxiliary suction device according to the eighth embodiment of the present invention;

FIG. 37 is an exploded view of FIG. 36;

fig. 38 is a partial sectional view of the soft endoscope auxiliary suction device according to the eighth embodiment of the present invention;

description of reference numerals:

10. the inner lens tube is provided with a plurality of inner lens tubes,

20. a suction pipe, 21, a flow regulating member, 22, a joint, 23, a branch pipe,

40. an auxiliary connecting piece 401, a front section 4011, a front guide surface 4012, a buffer cavity 402, a rear section 4021, a rear guide surface 4022 and a connecting pipe,

403. a spacing neck, 41, a connector, 411, a first cylindrical sidewall, 412, a second cylindrical sidewall, 413, a transition sidewall,

421. a main channel 422, a sub channel 423, a main opening 424, a sub opening 425, a through hole 51, a camera 52, a suction path 53, a field of view region,

61. a connecting sleeve 62, a side pipe 63, a first side hole 64 and a second side hole.

Detailed Description

In order to facilitate an understanding of the utility model, 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 6, the auxiliary suction device for a soft endoscope includes an endoscope tube 10, a suction tube 20, and an auxiliary connector 40 for assisting the soft endoscope.

The auxiliary connecting member 40 includes a connecting body 41, the rear end of the connecting body 41 has a main channel 421 and an auxiliary channel 422, the auxiliary channel 422 is smaller than the main channel 421, the auxiliary channel 422 is located beside the main channel 421, the front end of the connecting body 41 is provided with a main opening 423, at least a portion of the main opening 423 is opposite to the main channel 421, and the main opening 423 is simultaneously communicated with the auxiliary channel 422. The front end of the endoscope tube 10 is inserted into the main channel 421 and is matched with the main channel 421, and the front end of the suction tube 20 is communicated with the auxiliary channel 422.

As shown in fig. 4 and 5, the rear end of the connecting body 41 has a first cylindrical sidewall 411, a second cylindrical sidewall 412, and two transition sidewalls 413, and the first cylindrical sidewall 411 and the second cylindrical sidewall 412 are connected by the two transition sidewalls 413. Since the auxiliary channel 422 is mainly used for connecting the suction tube 20 and sucking the liquid or blood in the cavity at the front end of the endoscope tube 10, the suction tube 20 and the auxiliary channel 422 are arranged at the side of the endoscope tube 10 and the main channel 421, and the size of the auxiliary channel 422 is smaller.

The connecting body 41 has a front section 401 and a rear section 402, the main opening 423 is located on the front section 401, and the main channel 421 and the sub-channel 422 are located on the rear section 402.

In this embodiment, the outer wall of the main channel 421 is cylindrical and extends to the outer side of the main opening 423 in the front end direction, the main opening 423 is coaxial with the main channel 421, the outer wall of the main channel 421 and the outer wall of the main opening 423 are in an integral smooth transition, a spacing neck 403 is arranged between the main channel 421 and the inner wall of the main opening 423, the diameter of the spacing neck 403 is smaller than that of the main channel 421, and the spacing neck 403 can limit the front end of the endoscope tube 10 to move forward, so as to resist the endoscope tube 10. The sub-passage 422 communicates with the main opening 423 and the main passage 421 through the through hole 425. A rear guiding surface 4021 is disposed at the rear end of the connecting body 41, the rear guiding surface 4021 is located at the tail of the secondary channel 422, and the rear guiding surface 4021 can reduce damage to human tissues.

The advantages of this embodiment are:

in the auxiliary connecting member 40 of this embodiment, the main channel 421 is connected and communicated with the endoscope tube 10, and the auxiliary channel 422 is connected and communicated with the suction tube 20, so that the liquid or blood in the cavity at the front end of the endoscope tube 10 can be sucked through the suction tube 20, the visual field at the front end of the endoscope tube 10 can be fully exposed, the safety of the operation can be improved, and the suction force caused by the working channel of the endoscope tube 10 being occupied by the endoscope accessories can be prevented from being weakened; as shown in fig. 7, since the front end of the auxiliary connecting element 40 performs liquid suction through the main opening 423, as seen from the path of liquid suction in the figure, the direction of liquid suction (i.e. the direction of the main opening 423) is substantially coincident with the direction (i.e. the direction of the main channel 421) faced by the camera 51 in the endoscope tube 10, as seen from the illustrated suction path 52, the area of liquid suction is the visual field area 53 at the front end of the camera 51, and the irradiated part of the camera 51, i.e. the liquid suction part, is substantially coincident, so as to avoid the operation error and the operation risk caused by the inconsistency of the area of liquid suction and the visual field area 53, and ensure the precision and safety of the operation process. The suction path 52 is as follows: gastrointestinal fluid or blood is drawn through and into the main opening 423, through the through-hole 425, into the secondary channel 422 and the straw 20 in sequence, and out of the straw.

Furthermore, since the suction tube 20 for liquid suction is located at the side of the main channel 421 and the inner tube 10, the whole soft endoscope auxiliary suction device has a small transverse dimension, can well conform to the bending deformation of the front end of the inner tube 10, and is very suitable for performing minimally invasive gastrointestinal surgery.

Finally, because the farthest end of the main opening 423 of the auxiliary connecting piece 40 has a certain distance with the camera 51 of the endoscope tube 10, the human tissue can be pushed open, so that the condition that the human tissue is lapped at the front end of the endoscope tube 10 to influence the visual field and the operation space is avoided, the front ends of the auxiliary connecting pieces 40 are all visual field areas 53, and the operation visual field is very good.

Example two

As shown in fig. 8 to 13, in this embodiment, compared with the first embodiment, a secondary opening 424 is further provided at the front end of the connecting body 41, the secondary opening 424 at least partially faces the secondary channel 422, preferably, the secondary channel 422 is coaxial with the secondary opening 424, at least two branch pipes 23 are formed at the rear end of the suction pipe 20, one of the branch pipes 23 is coaxial with the main body of the suction pipe 20, and the other branch pipe 23 is inclined with respect to the main body of the suction pipe 20.

In this embodiment, the front end of the connecting body 41 is further provided with a secondary opening 424, which can be used for performing auxiliary operations on the front end, for example, a pull wire for an endoscope or a thin-sized endoscope accessory can sequentially pass through the suction tube 20, the secondary channel 422 and the secondary opening 424 and be delivered to an operation area to assist minimally invasive surgery, which further improves the convenience and safety of the operation; suitably, at the rear end of the suction tube 20, there are branch tubes 23, one of which 23 is used for ventilation and the other 23 is used for the operation of the auxiliary device, in which case the operation channel of the auxiliary device is preferably a branch tube 23 coaxial with the main part of the suction tube 20.

In all embodiments of the present invention, the front end of the connecting body 41 is further provided with a secondary opening 424, and a plurality of branch tubes 23 may be disposed at the end of the suction tube 20, or connected to a multi-way joint, so as to achieve negative pressure suction and meet the requirement of the endoscope tube to assist the penetration of instruments into the suction tube 20.

EXAMPLE III

As shown in fig. 14 to 17, in this embodiment, compared with the first embodiment, a connection pipe 4022 is provided at the rear end of the connection body 41, the sub channel 422 is provided in the connection pipe 4022, a joint 22 is further provided at the front end of the suction pipe 20, the joint 22 is inserted into the sub channel 422 to communicate the suction pipe 20 with the sub channel 422, and a flow rate adjusting member 21 is provided on the suction pipe 20.

In this embodiment, the connection tube 4022 is disposed at the rear end of the connection body 41, and can be connected and assembled with the connection tube 4022 through the joint 22 by the separate suction tube 20, so that the assembly is convenient, and the flow adjusting member 21 on the suction tube 20 can adjust the suction force, thereby realizing manual control of liquid suction to meet the requirements of different surgical scenes; the tail end of the suction pipe 20 is provided with a connector for connecting with an external negative pressure suction device.

Example four

As shown in fig. 18 to fig. 22, the present embodiment is different from the first embodiment mainly in the structure of the auxiliary connecting member 40, the front end of the connecting body 41 is tapered, and a front guide surface 4011 is formed on the surface of the front end.

In this embodiment, the overall structure of the auxiliary connecting member 40 is more smooth, the first cylindrical sidewall 411 and the second cylindrical sidewall 412 are integrally connected through the two transitional sidewalls at both sides, and particularly the structure of the front end portion thereof is more beneficial to pushing the endoscope tube 10 and the suction tube 20 in the front end direction, reducing the damage to the human tissue, furthermore, in the embodiments of the present invention, the endoscope tube 10 plays a main role of pushing and supporting with respect to the suction tube 20, and in order to ensure the accurate forward pushing of the endoscope tube 10, the tip portion of the auxiliary connecting member 40 substantially coincides with the axial direction of the inner lens tube 10, that is, the angle of the front guide surface 4011 on the side closer to the main passage 421 with respect to the axial direction of the main passage 421 is smaller than the angle of the front guide surface 4011 on the side closer to the sub passage 422 with respect to the axial direction of the main passage 421. In addition, the front guide surface 4011 is easily inserted into a narrow surgical space, and the endoscope tube 10 and the suction tube 20 can be efficiently guided into a surgical area by the guide action of the front guide surface 4011, thereby smoothly performing minimally invasive surgical operations.

In this embodiment, a buffer chamber 4012 is further formed at the front end of the connecting body 41, and the main passage 421, the sub passage 422, and the main opening 423 are communicated with each other through the buffer chamber 4012. A uniform suction force can also be created by this buffer chamber 4012.

It should be noted that the auxiliary connecting member 40 may be formed by integral injection molding, or may be formed by separate processing (as shown in fig. 22), and then two separate parts are connected.

EXAMPLE five

As shown in fig. 23 to 26, in this embodiment, compared with the fourth embodiment, a secondary opening 424 is further provided at the front end of the connecting body 41, the secondary opening 424 at least partially faces the secondary channel 422, preferably, the secondary channel 422 is coaxial with the secondary opening 424, at least two branch pipes 23 are formed at the rear end of the suction pipe 20, one of the branch pipes 23 is coaxial with the main body of the suction pipe 20, and the other branch pipe 23 is inclined with respect to the main body of the suction pipe 20.

In this embodiment, the front end of the connecting body 41 is further provided with a secondary opening 424, which can be used for performing auxiliary operations on the front end, for example, a pull wire or a thin-sized endoscopic accessory for the endoscopic tube 10 can sequentially pass through the suction tube 20, the secondary channel 422 and the secondary opening 424, and be delivered to an operation area, so as to assist a minimally invasive operation and further improve the convenience and safety of the operation; suitably, at the rear end of the suction tube 20, there are branch tubes 23, one of which 23 is used for ventilation and the other 23 is used for the operation of the auxiliary device, in which case the operation channel of the auxiliary device is preferably a branch tube 23 coaxial with the main part of the suction tube 20.

EXAMPLE six

As shown in fig. 27 to 31, in this embodiment, compared with the first embodiment, a sub opening 424 is further provided at the front end of the connecting body 41, the sub opening 424 at least partially faces the sub passage 422, preferably, the sub passage 422 is coaxial with the sub opening 424, at least two branch pipes 23 are formed at the rear end of the suction pipe 20, one of the branch pipes 23 is coaxial with the main body of the suction pipe 20, and the other branch pipe 23 is inclined with respect to the main body of the suction pipe 20.

The rear end of the connecting body 41 is provided with a connecting pipe 4022, the auxiliary channel 422 is arranged in the connecting pipe 4022, the front end of the suction pipe 20 is also provided with a connector 22, the connector 22 is inserted into the auxiliary channel 422, so that the suction pipe 20 is communicated with the auxiliary channel 422, the suction pipe 20 is provided with a flow regulating part 21, and the tail end of the suction pipe 20 is provided with a connector for connecting with an external negative pressure suction device.

In the present embodiment, the sub-opening 424 and the branch pipe 23 are used for adjusting the suction force by the flow rate adjusting member 21 for the purpose of facilitating the auxiliary operation, which has been discussed above.

EXAMPLE seven

As shown in fig. 32 to 35, compared with the embodiment, the present embodiment is provided with the sub opening 424, and the sub opening 424 and the branch pipe 23 are used for adjusting the suction force through the flow rate adjusting member 21 for facilitating the auxiliary operation, which has been discussed above and will not be described again.

Example eight

As shown in fig. 36 to 38, in this embodiment, the connection body 41 of the soft endoscope auxiliary suction device includes a connection sleeve 61 and a side tube 62, the main channel 421 and the main opening 423 are respectively located at the front end and the rear end of the connection sleeve 61, the auxiliary channel 422 is located at the rear end of the side tube 62, a first side hole 63 is provided on the side wall of the connection sleeve 61, a second side hole 64 is provided on the side wall of the side tube 62, the connection sleeve 61 is connected to the side tube 62, the first side hole 63 corresponds to the second side hole 64, the main opening 423 communicates with the auxiliary channel 422 through the first side hole 63 and the second side hole 64, the front end of the side tube 62 is opened to form an auxiliary opening 424, and the side tube 62 extends toward the rear end (or a suction tube is connected to the rear end of the side tube 62). In this embodiment, the side tube 62 and the connecting sleeve 61 can be connected by sintering, bonding, etc., the connecting sleeve only needs to be processed separately in this embodiment, the side tube 62 can be a common rubber tube, and the processing of the auxiliary suction device for the soft endoscope is more convenient and simpler, and the production cost is low.

In this embodiment, the pipe type of the side pipe 62 is not limited, and in order to improve the connection reliability of the connection sleeve 61 and the side pipe 62, the front end part of the outer side wall of the side pipe 62 is an arc-shaped columnar concave surface, and the concave surface is attached to the outer wall of the connection sleeve 61.

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 utility model and there may be many other embodiments not listed. Any alterations and modifications without departing from the spirit of the utility model are within the scope of the utility model.

Claims (20)

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, at least part of the main opening is opposite to the main channel, and the main opening is communicated with the auxiliary channel.

2. The auxiliary connector as claimed in claim 1, wherein the rear end of the connector has a first cylindrical sidewall, a second cylindrical sidewall and two transition sidewalls, and the first cylindrical sidewall and the second cylindrical sidewall are connected by the two transition sidewalls.

3. The accessory connector of claim 1, wherein the connector has a front section and a rear section, the main opening is located on the front section, and the main and auxiliary passages are located on the rear section.

4. An auxiliary connection member as claimed in any one of claims 1 to 3, wherein the front end of the connection body is tapered and has a front guide surface formed on a surface of the front end thereof.

5. The secondary connection of claim 4, wherein the angle of the leading face adjacent one side of the primary passage relative to the axial direction of the primary passage is less than the angle of the leading face adjacent one side of the secondary passage relative to the axial direction of the primary passage.

6. An auxiliary connection according to any one of claims 1 to 3 wherein a secondary opening is provided at the forward end of the connection body, the secondary opening being at least partially opposite the secondary channel.

7. The accessory connector of claim 6, wherein the primary opening is coaxial with the primary channel and the secondary channel is coaxial with the secondary opening.

8. An auxiliary connection according to any one of claims 1 to 3, wherein a rear guide surface is provided at the rear end of the connection body, the rear guide surface being located at least at the rear of the secondary channel.

9. An auxiliary connection member as claimed in any one of claims 1 to 3, wherein the outer wall of said main passage is cylindrical and extends in a direction towards the front end to the outside of said main opening.

10. An accessory connector as claimed in any one of claims 1 to 3, 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. An auxiliary connecting member as claimed in any one of claims 1 to 3, wherein a buffer chamber is formed at a front end of the connecting body, and the main passage, the sub passage and the main opening communicate with each other through the buffer chamber.

12. The auxiliary connecting member according to claim 1, wherein the connecting body comprises a connecting sleeve and a side tube, the main channel and the main opening are respectively located at the front end and the rear end of the connecting sleeve, the auxiliary channel is located at the rear end of the side tube, a first side hole is arranged on the side wall of the connecting sleeve, a second side hole is arranged on the side wall of the side tube, the connecting sleeve is connected with the side tube, the first side hole corresponds to the second side hole, and the main opening is communicated with the auxiliary channel through the first side hole and the second side hole.

13. The auxiliary connecting member as claimed in claim 12, wherein at least a partial region of the outer sidewall of the side tube is an inner concave surface, and the inner concave surface is fitted with the outer wall of the connecting sleeve.

14. The accessory connector of claim 12, wherein the front end of the side tube has an opening to form a secondary opening.

15. An auxiliary suction device for a flexible endoscope, comprising an endoscope tube, a suction tube and an auxiliary connecting member as claimed in any one of claims 1 to 14, wherein the front end of the endoscope tube is inserted into and matched with the main channel, and the front end of the suction tube is connected and communicated with the auxiliary channel.

16. A soft endoscope auxiliary suction device according to claim 15, wherein a connection tube is provided at the rear end of said connection body, said sub channel is provided in said connection tube, and a joint is further provided at the front end of said suction tube, said joint being inserted into said sub channel to communicate said suction tube with said sub channel.

17. A soft endoscope assisted suction device according to claim 15, wherein a flow rate adjusting member is provided on the suction tube.

18. An auxiliary suction device for a flexible endoscope, comprising an endoscope tube and the auxiliary connector of claim 12, wherein the front end of the endoscope tube is inserted into and matched with the main channel, the front end of the suction tube is connected and communicated with the auxiliary channel, and the side tube extends towards the rear end or is connected with the suction tube.

19. A soft endoscope auxiliary suction device according to claim 18, wherein at least two branch tubes are formed at a rear end of said suction tube.

20. A soft endoscope assisted suction device according to claim 19, wherein one of the branch tubes is coaxial with the main portion of the suction tube and the other branch tube is inclined with respect to the main portion of the suction tube.

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