CN219206861U - Channel assembly and endoscope - Google Patents

Abstract

The utility model discloses a channel assembly and an endoscope, and relates to the technical field of medical instruments. The channel assembly includes a channel tube, a guide, and an insertion interface. The guide member has an arcuate guide portion. The extending direction of the guide part is provided with a first end and a second end. The guide portion has a first channel cavity. The first channel cavity penetrates the guide part along the extending direction of the guide part. The channel tube extends in a direction having a proximal end and a distal end. The proximal end of the channel tube is connected to the first end of the guide portion, and the lumen of the channel tube is in communication with the first channel lumen. The insertion interface has a second channel cavity extending therethrough. The second end of the guide part is connected with the insertion interface piece, and the first channel cavity is communicated with the second channel cavity. The channel component is additionally provided with the guide piece, and the guide piece is utilized for steering and guiding the instrument in the channel, so that the instrument can be steered according to a preset track, and the difficulty of inserting the instrument into the channel component is reduced.

Description

Channel assembly and endoscope

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a channel assembly and an endoscope.

Background

An endoscope is a commonly used medical instrument, is an inspection instrument capable of directly entering a natural pipeline of a human body, and can provide sufficient diagnostic information for doctors to treat diseases. The endoscope includes an insertion portion having a first end and a second end in an extending direction thereof, and an operation portion. The first end is communicated with the operation part, and the second end is configured to enter the human body through a human body cavity or a surgical incision so as to observe internal organs.

In the related art, an endoscope has a channel tube penetrating an insertion portion so that instruments, gases and/or liquids required during a treatment process can reach a predetermined position in a body through the channel tube. The operating part has an insertion interface for introducing instruments, gases and/or liquids required for the treatment. One end of the channel tube adjacent to the first end of the insertion portion communicates with the insertion interface of the operation portion. The central axis of the insertion interface is different from the central axis of the channel tube, and in order to enable the channel tube to communicate with the insertion interface, one end of the channel tube adjacent to the insertion portion is provided with a bending portion. However, during insertion of the instrument into the channel tube, there is still a problem in that the difficulty of insertion is great.

Disclosure of Invention

The utility model discloses a channel assembly and an endoscope, which are used for solving the problem of high instrument insertion difficulty in a channel of the endoscope in the related technology.

In order to solve the problems, the utility model adopts the following technical scheme:

in one aspect, the present application provides a channel assembly. The channel assembly may be used with an endoscope. The channel assembly includes a channel tube, a guide, and an insertion interface. The guide member has an arcuate guide portion. The extending direction of the guide part is provided with a first end and a second end. The guide portion has a first channel cavity. The first channel cavity penetrates the guide part along the extending direction of the guide part. The channel tube extends in a direction having a proximal end and a distal end. The proximal end of the channel tube is connected to the first end of the guide portion, and the lumen of the channel tube is in communication with the first channel lumen. The insertion interface has a second channel cavity extending therethrough. The second end of the guide part is connected with the insertion interface piece, and the first channel cavity is communicated with the second channel cavity.

The channel component provided by the utility model has the following beneficial effects:

in the case of the channel assembly for an endoscope, the guide piece can play a role in guiding the steering of the instrument in the process of inserting the instrument into the channel assembly, and is further beneficial to the insertion of the instrument into the channel assembly. In addition, a guide piece is added between the insertion interface piece and the channel tube, so that the instrument can be inserted into the channel tube according to a preset track through the shape of the preset guide piece. Specifically, the first channel cavity runs through curved guide part along the extending direction of guide part, and first channel cavity is the arc cavity promptly, and then is favorable to avoiding the in-process that the apparatus passes through the guide part to appear the great condition of local steering angle, and then is favorable to reducing the degree of difficulty of apparatus at inserting the passageway pipe, solves the problem that the apparatus that the passageway of endoscope exists inserts the degree of difficulty greatly among the related art.

According to some alternative embodiments, the guide is made of a hard material.

According to some alternative embodiments, the guide is made of metal.

According to some alternative embodiments, the insertion interface has a first channel portion. The first channel portion is connected to the second end of the guide portion. The insertion interface has a first subchamber. The first subchamber penetrates the first channel part along the tangential direction of the second end of the guide part, and the first subchamber is communicated with the first channel chamber.

According to some alternative embodiments, the guide further comprises a first connection portion. The first connecting part is arranged at the second end of the guiding part. The first connecting part extends along the tangential direction of the second end of the guiding part and is connected with the insertion interface piece. The first connecting portion has a third channel cavity. The third channel cavity penetrates through the first connecting portion along the extending direction of the first connecting portion. One end of the third channel cavity is communicated with the first channel cavity. The other end of the third channel cavity is communicated with the second channel cavity.

According to some alternative embodiments, the insertion interface piece further has a second channel portion. One end of the second channel portion in the first direction is connected between both ends of the first channel portion in the tangential direction of the second end of the guide portion. The insertion interface has a second subchamber. The second subchamber penetrates through the chamber walls of the second channel part and the first channel part along the first direction, and the second subchamber is communicated with the first subchamber.

According to some alternative embodiments, the proximal end of the channel tube is provided with a first tube section. The first pipe section is communicated with the first end of the guide part, and extends in a direction away from the guide part along a tangential direction of the first end of the guide part.

According to some alternative embodiments, the proximal end of the channel tube is further provided with a second tube section. The second pipe section is connected to one end of the first pipe section adjacent to the guide part, and the second pipe section is sleeved at one end of the guide part adjacent to the channel pipe.

According to some alternative embodiments, the guide further comprises a second connection. The second connecting portion is arranged at the first end of the guiding portion. The second connecting portion extends in a tangential direction of the first end of the guide portion and is connected to the proximal end of the channel tube. The second connecting part is provided with a fourth channel cavity. The fourth channel cavity penetrates through the second connecting portion along the extending direction of the second connecting portion. The proximal end of the channel tube is at least partially sleeved on the second connecting part, and one end of the fourth channel cavity is communicated with the first channel cavity. The other end of the fourth channel cavity is connected with the lumen of the channel tube.

In another aspect, the present application also provides an endoscope. The endoscope has the same technical characteristics and the same technical effects as the channel assembly, and is not described in detail herein.

According to some alternative embodiments, the endoscope further comprises an operating portion. The operating portion includes a first mounting portion and a second mounting portion. The proximal end of the channel tube is disposed at the first mounting portion. The insertion interface piece is arranged on the second installation part. The first end of the guide member is connected to the first mounting portion.

According to some alternative embodiments, the first mounting portion has a first mounting hole. The first mounting hole extends in a tangential direction of the first end of the guide portion. At least a portion of the proximal end of the channel tube is positioned in the first mounting hole. At least a portion of the first end of the guide is positioned within the first mounting hole.

According to some alternative embodiments, the second mounting portion has a second mounting hole, at least part of the second end of the guide being located within the first mounting hole.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a channel assembly provided in accordance with some alternative embodiments of the present application;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic illustration of an assembly of a channel tube, guide and insertion interface provided by some alternative embodiments of the present application;

FIG. 4 is a cross-sectional view of an insert interface provided in some alternative embodiments of the present application;

FIG. 5 is a schematic view of a guide provided by some alternative embodiments of the present application;

FIG. 6 is a schematic illustration of an assembly of a guide with a channel tube provided in accordance with some alternative embodiments of the present application;

FIG. 7 is a second schematic illustration of the assembly of a guide with a channel tube provided in some alternative embodiments of the present application;

FIG. 8 is a third schematic illustration of the assembly of a guide with a channel tube provided in some alternative embodiments of the present application;

FIG. 9 is a schematic view of an endoscope provided in some alternative embodiments of the present application;

fig. 10 is a schematic view of an operating portion provided by some alternative implementations of the present application.

Reference numerals illustrate:

100-channel tube; 110-a first pipe section; 120-a second pipe section;

200-guides; 210-a guide; 211-a first channel cavity; 230-a first connection; 221-a third channel cavity; 220-a second connection; 231-fourth channel cavity;

300-insert interface; 310-a second channel cavity; 311-first subchamber; 312-a second subchamber; 320-a first channel portion; 3201-first subsection; 3202-second subsection; 3203-third subsection; 330-a second channel portion;

400-an operation part; 410-a first mounting portion; 411-a first mounting hole; 420-a second mounting portion; 421-second mounting holes; 430-mounting cavity.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

In various embodiments of the present application, "proximal" and "distal" refer to the proximal and distal positions of an endoscope and its accessories relative to a user in a use environment. Wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

In the related art, in order to enable the insertion portion to better adapt to a human body cavity or a surgical incision, the insertion portion needs to maintain a certain flexibility. Therefore, the material of the passage pipe penetrating the insertion portion is a flexible material. However, during insertion of the instrument through the insertion port, the instrument will be supported against the inner side wall of the channel tube. In this way, the end of the channel tube connected to the insertion port is easily deformed by the pressure of the instrument, so that the movement track of the instrument turned at the proximal end of the channel tube is changed, and the bending angle of the bending portion of the channel tube adjacent to the end of the insertion portion is increased under the pressure of the instrument, which is disadvantageous for the insertion of the therapeutic instrument along the channel tube.

The channel assembly and the endoscope provided in the embodiments of the present application will be described in detail below with reference to fig. 1 to 10 by way of specific embodiments and application scenarios thereof.

In one aspect, the present application provides a channel assembly. The channel assembly may be used with an endoscope. Illustratively, the channel assembly may be used as a media channel for an endoscope. In particular, where used in an endoscope, the channel assembly may be used to deliver instruments, gases and/or liquids as needed during a treatment procedure.

Referring to fig. 1 and 2, according to some alternative embodiments. The channel assembly provided herein includes a channel tube 100, a guide 200, and an insertion interface 300. For example, the channel tube 100 may be provided to an insertion portion of an endoscope, and the channel tube 100 may penetrate the insertion portion in an extending direction of the insertion portion. In the clinical treatment process, the insertion portion of the endoscope is inserted into a portion of the body where the treatment is to be performed. Thus, the instruments, gases and/or liquids required during treatment may travel along the channel tube 100 to the site within the body where treatment is desired.

Referring to fig. 3, according to some alternative embodiments, the guide 200 has an arcuate guide portion 210. Illustratively, the arcuate dimensions and size of the guide 210 may be adapted to different types of endoscopes as desired.

In some alternative embodiments, the radius of curvature is the same at different locations of the guide 210 along the extension of the guide 210. This ensures that the bending angles of the guide portion 210 are uniform throughout, thereby improving the smoothness of the instrument passing through the guide portion 210 and preventing the instrument from being clung during the process of passing through the guide portion 210.

Of course, in alternative embodiments, the radius of curvature may be different at different locations of the guide 210 along the extension of the guide 210. For example, the radius of curvature of the guide 210 may gradually increase and then gradually decrease at different positions along the extension direction of the guide 210. In this way, the instrument is beneficial for the instrument to enter the guide 210 during insertion into or extraction from the channel assembly. In particular, the radius of curvature of the guide 210 can be set as desired throughout to provide for smoother steering of the instrument through the guide 210.

Referring to fig. 3, the extending direction of the guide 210 has a first end and a second end. The guide 210 has a first channel cavity 211. The first channel cavity 211 penetrates the guide portion 210 along the extending direction of the guide portion 210, that is, the first channel cavity 211 is an arc-shaped channel cavity disposed on the guide portion 210. In some alternative embodiments, the first channel cavity 211 may have a circular cross-sectional shape perpendicular to the extending direction of the guide 210. Illustratively, the guide 210 may be an arcuate cylindrical structure. Specifically, the guide portion 210 has an arc-shaped tubular structure.

According to some alternative embodiments, as shown in fig. 3, the channel tube 100 extends in a direction having a proximal end and a distal end. The proximal end of the channel tube 100 is connected to the first end of the guide 210 and the lumen of the channel tube 100 is in communication with the first channel lumen 211. Illustratively, the cross-sectional shape of the lumen of the channel tube 100 perpendicular to the direction in which the channel tube 100 extends is the same as the cross-sectional shape of the first channel lumen 211 perpendicular to the direction in which the guide 210 extends.

According to some alternative embodiments, the lumen of the channel tube 100 is circular in cross-section perpendicular to the direction of extension of the channel tube 100. The first passage chamber 211 has a circular cross-sectional shape perpendicular to the extending direction of the guide portion 210. Illustratively, where the channel tube 100 is coupled to the guide 210, the channel tube 100 interfaces with the guide 210, and an end of the channel tube 100 adjacent the guide 210 is coaxially disposed with the first channel lumen 211 adjacent the channel tube 100 to facilitate excessive passage of the instrument from the first channel lumen 211 into the lumen of the channel tube 100.

Referring to fig. 3, the insertion interface 300 has a second channel cavity 310 extending through the insertion interface 300. The second end of the guide 210 is connected to the insertion interface 300, and the first channel cavity 211 communicates with the second channel cavity 310.

Illustratively, the end of the second channel cavity 310 remote from the first channel cavity 211 is a free end. The instrument may enter the second channel cavity 310 from an end of the second channel cavity 310 remote from the first channel cavity 211. And then into the first channel lumen 211 along the second channel lumen 310, thereby allowing the instrument to be moved into the lumen of the channel tube 100 along the inner wall of the first channel lumen 211.

In the channel assembly provided in the above embodiment, the insertion interface 300 is connected to the channel tube 100 through the guide 200, so that the guide 200 may be used to define a movement track of an instrument inserted into the channel tube 100 by the insertion interface 300. Specifically, the guide portion 210 is configured to be arc-shaped, so that the instrument can be inserted into the channel tube 100 along a preset arc-shaped track, which is beneficial to reducing the difficulty of inserting the instrument into the channel tube 100. In addition, compared with the scheme that the channel tube is directly connected with the insertion interface piece in the related art, the scheme provided by the embodiment can avoid deformation of the channel tube 100 caused by an instrument in the process of entering the proximal end of the channel tube 100, can reduce the acting force of the instrument on the channel tube 100, and is further beneficial to preventing the proximal end of the channel tube 100 from falling off.

According to some alternative embodiments, guide 200 is made of a hard material. The material of the guide 200 is hard material and should be understood as: the stiffness of the guide member 200 may withstand forces experienced by the instrument during steering within the guide member 200, i.e., the maximum resistance of the guide member 200 to elastic deformation is greater than or equal to the forces exerted by the instrument on the guide member 200 within the guide member 200. The guide 200 is thus sufficient to maintain its configuration during movement of the instrument along the guide 200 to avoid deformation of the guide 200 during insertion of the instrument along the guide 200 into the channel tube 100, ensuring that the guide 200 can limit insertion of the instrument into the channel tube 100 in a predetermined trajectory. Illustratively, there are many types of hard materials, such as: rigid PVC (Polyvinyl chloride ), alloy materials.

In the above embodiment, the guide member 200 is made of hard material, which is beneficial to reducing deformation of the guide member 200 after being stressed. Thus, this approach is beneficial in avoiding deformation of the guide 200 during insertion of the instrument from increasing the local steering angle in the guide 200, reducing the difficulty of inserting the instrument into the channel tube 100. In addition, the guide 200 is provided as a hard material, which is beneficial in reducing damage to the inner wall of the first channel cavity 211 by the instrument. This is beneficial to ensure smoothness of the inner wall of the first channel cavity 211 in case of multiple insertion of the instrument, avoiding the difficulty of inserting the instrument into the channel assembly increasing with the number of insertion instruments.

According to some alternative embodiments, the guide 200 is made of metal. Illustratively, the guide 200 may be, but is not limited to being, stainless steel.

The guide 200 is made of a metal material. The metal material has better rigidity and plasticity. Thus, this embodiment advantageously reduces the wall thickness of the channel wall of the guide 200, and thus, in the event that the outer diameter of the guide 200 is sized, the diameter of the lumen of the guide 200 may be made larger to facilitate passage of the instrument through the guide 200.

In some alternative embodiments, at least a portion of the first end of the guide 200 is embedded within the channel tube 100 and coupled to the channel tube 100. The channel tube 100 is provided in the insertion portion of the endoscope. The size of the channel tube 100 is not easily oversized, limited by the size of the insert. The guide 200 is provided as a metal material, which is advantageous in increasing the channel size of the guide 200 in the case that the outer diameter size of the guide 200 is limited.

In some alternative embodiments, the guide 210 is an arcuate structure. Thus, in forming the first passage chamber 211, the difficulty of drawing the mold is increased. The difficulty of preparing the guide 200 by drawing is relatively great. In some alternative embodiments, the guide 200 may be made of a plastic type of hard material. Thus, a straight passage may be formed first during the preparation of the guide 200, and then the guide 200 of a preset shape may be formed by secondary molding.

Illustratively, the guide 200 is a metallic material. In the process of manufacturing the guide 200, a linear metal pipe may be first manufactured. The straight metal tubing is then bent to form the guide 200 with the arcuate guide portion 210.

Referring to fig. 3 and 4, according to some alternative embodiments, the insert interface 300 has a first channel portion 320. The first channel portion 320 is connected to the second end of the guide portion 210. The insert interface 300 has a first subcavity 311. The first sub-chamber 311 penetrates the first passage portion 320 in a tangential direction of the second end of the guide portion 210, and the first sub-chamber 311 communicates with the first passage chamber 211. Illustratively, the tangent to the second end of the guide 210 may be in the direction shown as D2 in fig. 3. In some alternative embodiments, the direction of extension of the first channel portion 320 is tangential to the second end of the guide portion 210. Illustratively, the instrument may enter the insertion interface 300 from an end of the first sub-lumen 311 distal from the guide 210.

In the above embodiment, the first sub-cavity 311 of the insert interface 300 penetrates the first channel portion 320 in a tangential direction of the second end of the guide portion 210. During the process of preparing the insert interface 300, the mold can be pulled out along the extending direction of the first sub-cavity 311, which is beneficial to reducing the preparation difficulty of the insert interface 300.

Referring to fig. 3 and 5, according to some alternative embodiments, the guide 200 further includes a first connection portion 230. The first connection part 230 is disposed at the second end of the guide part 210. As shown in fig. 3, in some alternative embodiments, the first connection portion 230 extends tangentially to the second end of the guide portion 210 and is connected to the insertion interface 300. The first connection part 230 has a third passage chamber 221. The third passage chamber 221 penetrates the first connection portion 230 in the extending direction of the first connection portion 230. One end of the third passage chamber 221 communicates with the first passage chamber 211. The other end of the third channel chamber 221 communicates with the second channel chamber 310.

In some alternative embodiments, the first connection part 230 may have a cylindrical structure. Illustratively, the first connecting portion 230 and the guiding portion 210 are both cylindrical structures, and the first connecting portion 230 and the guiding portion 210 are integrally formed.

In the above embodiment, the first connecting portion 230 is disposed along the tangential direction of the second end of the guiding portion 210, so that the assembling surface of the guiding member 200 and the insertion interface member 300 is prevented from being located at the second end of the guiding portion 210, which is beneficial to improving the smoothness of the inner wall of the steering position in the channel assembly, and thus is beneficial to the entry of the instrument from the second end of the guiding portion 210 into the first channel cavity 211.

In some alternative embodiments, as shown in fig. 3, at least a portion of the first connection 230 may be embedded within the insert interface 300. Illustratively, an end of the first connection portion 230 remote from the guide portion 210 is at least partially embedded within the first sub-cavity 311. This may improve the reliability of the assembly between the first connection portion 230 and the insert interface 300 such that the insert interface 300 may provide support for the first connection portion 230 to avoid a change in the relative position between the first connection portion 230 and the insert interface 300. In addition, the first connection part 230 extends along a tangential direction of the second end of the guide part 210, i.e., the extending direction of the first connection part 230 is the same as the extending direction of the first sub-cavity 311. Accordingly, in the process of preparing the channel assembly, the guide member 200 is assembled with the first connection portion 230 only by adaptively setting the outer diameter size of the first connection portion 230 and the inner diameter size of the end of the first sub-cavity 311 adjacent to the guide member 200.

As some alternative embodiments, glue is provided between the first connection 230 and the insertion interface 300. This may increase the stability of the assembly of the first connection part 230 with the insertion interface 300. In addition, the assembly gap between the first connection part 230 and the insertion interface 300 may be further sealed by glue.

Referring to fig. 3 and 4, according to some alternative embodiments, the first channel portion 320 includes a first sub-section 3201 and a second sub-section 3202. The first sub-segment 3201 is disposed at an end of the second sub-segment 3202 adjacent to the guide member 200. Illustratively, the inner diameter of the first sub-segment 3201 is greater than the inner diameter of the end of the second sub-segment 3202 adjacent the guide member 200.

Referring to fig. 3, the end of the guide 200 remote from the channel tube 100 is at least partially located within the first sub-section 3201. Illustratively, the inner sidewall of the end of the guide 200 distal from the channel tube 100 is flush with the inner sidewall of the end of the second sub-segment 3202 adjacent the guide 200. In some alternative implementations, an end of the guide 200 distal from the channel tube 100 terminates at an end of the second sub-segment 3202 adjacent the guide 200.

In the above embodiment, the inner diameter of the first sub-segment 3201 is larger than the inner diameter of the end of the second sub-segment 3202 adjacent to the guide member 200, which is beneficial to improving the smoothness of the engagement between the guide member 200 and the inner wall of the insertion interface member 300, and thus is beneficial to reducing the difficulty of the instrument passing through the guide member 200 and the insertion interface member 300.

Referring to fig. 3 and 4, according to some alternative embodiments, the first channel portion 320 further includes a third sub-section 3203. The third sub-segment 3203 is disposed at an end of the second sub-segment 3202 remote from the first sub-segment 3201. The inner diameter of the third sub-section 3203 is greater than the inner diameter of the first sub-section 3201, and the inner diameter of the third sub-section 3203 is equal to the inner diameter of the end of the second sub-section 3202 remote from the first sub-section 3201. Illustratively, the inner diameter of the second sub-segment 3202 gradually increases along an end of the second sub-segment 3202 proximate to the first sub-segment 3201 toward an end of the second sub-segment 3202 proximate to the third sub-segment 3203.

In the above embodiment, the instrument enters the third sub-segment 3203 from the end of the third sub-segment 3203 remote from the second sub-segment 3202, and then passes through the second sub-segment 3202 into the first sub-segment 3201. The above-described embodiments provide a channel assembly that facilitates insertion of an instrument into third sub-segment 3203 by increasing the inner diameter of third sub-segment 3203. The gradual change in the inner diameter of the second sub-segment 3202 is beneficial for improving the smoothness of the inner wall of the first channel portion 320, and thus for facilitating insertion of an instrument from the first sub-lumen 311 of the first channel portion 320.

According to some alternative embodiments, referring to fig. 2-4, the insert interface 300 also has a second channel portion 330. One end of the second channel portion 330 in the first direction is connected to both ends of the first channel portion 320 in the tangential direction of the second end of the guide portion 210. The insert interface 300 has a second subchamber 312. The second sub-chamber 312 penetrates the chamber walls of the second channel portion 330 and the first channel portion 320 in the first direction, and the second sub-chamber 312 communicates with the first sub-chamber 311. Illustratively, the first direction is the direction shown as D3 in fig. 3.

In the above embodiment, the second subchamber 312 penetrates the chamber walls of the second channel portion 330 and the first channel portion 320 along the first direction, which is beneficial to drawing the mold of the insert interface 300 during the preparation process, and is beneficial to reducing the preparation difficulty of the insert interface 300.

Referring to fig. 6-8, in some alternative embodiments, the proximal end of the channel tube 100 is provided with a first tube segment 110. The first pipe segment 110 communicates with the first end of the guide portion 210, and the first pipe segment 110 extends in a direction away from the guide portion 210 in a tangential direction of the first end of the guide portion 210. Illustratively, the end of the first tube segment 110 directly interfaces with the first end of the guide 210.

Illustratively, where the channel assembly is used with an endoscope, support may be provided for the first tube segment 110 by the housing of the endoscope operating portion to ensure that the first tube segment 110 extends in a direction away from the guide portion 210 in a tangential direction to the first end of the guide portion 210. Illustratively, the housing of the endoscope operating section may retain the first tube segment 110 extending in a tangential direction of the first end of the guide section 210 by, but not limited to, providing a through-hole or groove in a tangential direction of the first end of the guide section 210.

In the above embodiment, in the case that the instrument moves to the first pipe section 110 along the inner cavity of the guide member 200, the instrument continues to move in the tangential direction of the first end of the guide member 200, that is, the moving direction of the instrument is the same as the extending direction of the first pipe section 110, so that the acting force of the instrument on the first pipe section 110 is the friction force along the extending direction of the first pipe section 110. Therefore, during the movement of the instrument within the first tube segment 110, bending deformation of the first tube segment 110 can be avoided, which is beneficial to avoid deformation of the channel tube 100 to increase the force applied to the proximal end of the channel tube 100 by the instrument, and is beneficial to prevent the connection between the channel tube 100 and the guide 200 from falling off.

In addition, the channel assembly provided in the above embodiment is beneficial to prevent the proximal end of the channel tube 100 from deforming during the process of passing the instrument, so as to avoid fatigue damage of the proximal end of the channel tube 100, and achieve the purpose of protecting the proximal end of the channel tube 100.

Referring to fig. 6-7, according to some alternative embodiments, the proximal end of the channel tube 100 is further provided with a second tube segment 120. The second pipe section 120 is connected to an end of the first pipe section 110 adjacent to the guiding portion 210, and the second pipe section 120 is sleeved on an end of the guiding member 200 adjacent to the channel pipe 100. Illustratively, the second tube segment 120 may accommodate the shape of the end of the guide 200 adjacent the channel tube 100. In some alternative embodiments, an adhesive is disposed between the second tube segment 120 and the guide 200. This not only improves the reliability of the engagement of the second tube section 120 with the guide 200 by means of adhesive. It is also beneficial to achieve a sealing engagement of the second tube segment 120 with the guide 200.

In the above embodiment, the channel tube 100 is directly sleeved on the guide member 200 and connected to the guide member 200, which is beneficial for the instrument to enter the channel tube 100 from the guide member 200. In addition, the channel tube 100 is less elastically deformed in the extending direction thereof. Thus, this embodiment is beneficial for avoiding partial telescoping of the channel assembly within the operative portion of the endoscope, and thus for preventing the channel assembly from stretching after being stressed, resulting in partial redundancy within the operative portion, and thus for deforming and bending the instrument through the portion of the channel assembly within the operative portion.

Referring to fig. 6, in the case where the first end of the guide 210 is the end of the channel tube 100 adjacent to the channel tube 100, the second tube segment 120 is sleeved on the end of the guide 210 and is adapted to the arc-shaped structure of the first end of the guide 210. In some alternative embodiments, an end of the first tube segment 110 adjacent the guide 200 interfaces with an end of the guide 200 adjacent the first tube segment 110. Illustratively, the end face of the first tube segment 110 adjacent to the end of the guide 200 is co-planar with the end face of the guide 200 adjacent to the end of the first tube segment 110. This is beneficial in ensuring that frictional forces acting on the inner side wall of the channel tube 100 within the channel tube 100 of an instrument enter the channel tube 100 along the extending direction of the channel tube 100 to avoid bending deformation of the channel tube 100 and thus to avoid fatigue damage of the channel tube 100 due to repeated bending.

Referring to fig. 7 and 8, the guide 200 further includes a second connection portion 220. The second connecting portion 220 is disposed at a first end of the guiding portion 210. The second connection portion 220 extends in a tangential direction of the first end of the guide portion 210 and is connected to the proximal end of the channel tube 100. The second connection part 220 has a fourth passage chamber 231, and the fourth passage chamber 231 penetrates the second connection part 220 in the extending direction of the second connection part 220.

In some alternative embodiments, the second connection 220 may be, but is not limited to, a cylindrical structure. The second connection part 220 is illustratively a cylindrical structure. In some alternative embodiments, the second connecting portion 220 and the guiding portion 210 are both cylindrical structures, and the second connecting portion 220 and the guiding portion 210 are integrally formed to improve the smoothness of the inner wall of the channel of the guiding member 200.

As shown in fig. 6 to 8, as some alternative embodiments, the proximal end of the channel tube 100 is at least partially sleeved on the second connecting portion 220, and one end of the fourth channel cavity 231 is communicated with the first channel cavity 211, and the other end of the fourth channel cavity 231 is communicated with the lumen of the channel tube 100.

In the above embodiment, the second connecting portion 220 is disposed along the tangential direction of the first end of the guiding portion 210, so that the assembly surface of the guiding element 200 and the channel tube 100 is prevented from being located at the first end of the guiding portion 210, which is beneficial to improving the smoothness of the inner wall of the steering position in the channel assembly, and thus is beneficial to the entry of the instrument into the channel tube 100 from the first end of the guiding portion 210.

According to some alternative embodiments, in the case of a channel assembly for an endoscope, at least part of the second connection portion 220 is supported on a housing of an operating portion of the endoscope to provide support for the second connection portion 220 through the housing of the operating portion. Thus, this embodiment provides an improved stability of the guide 200 relative to the housing, which is beneficial in preventing deformation of the guide 200 during passage of the instrument. In addition, the force applied to the connection between the guide member 200 and the insertion interface member 300 can be reduced, which is beneficial to preventing the guide member 200 from falling off near the end of the insertion interface member 300.

Referring to fig. 7 and 8, in the case where the second connection part 220 is provided at the first end of the guide part 210, the second pipe section 120 is sleeved on the second connection part 220. Alternatively, when the second connecting portion 220 is provided at the first end of the guide portion 210, a part of the second pipe section 120 is sleeved on the second connecting portion 220, and the other part is sleeved on the guide portion 210.

The above-described embodiments provide to the channel assembly with the advantage of improving the reliability of the assembly between the guide 200 and the channel tube 100, preventing the channel tube 100 from falling off, and avoiding fatigue damage occurring when the channel tube 100 is repeatedly bent.

In another aspect, the present application also provides an endoscope. The endoscope includes a channel assembly as described herein. Thus, the endoscope provided by this embodiment is beneficial in reducing the difficulty of inserting instruments into the channel assembly.

According to some alternative embodiments, the endoscope further comprises an operating portion 400. Illustratively, the operating portion 400 is a base structure. Illustratively, the operator 400 may provide a mounting basis for the guide 200 and the insertion interface 300.

Referring to fig. 9 and 10, the operation part 400 includes a first mounting part 410 and a second mounting part 420. The proximal end of the channel tube 100 is disposed at the first mounting portion 410. The insertion interface 300 is disposed at the second mounting portion 420. The first end of the guide member 200 is connected to the first mounting portion 410. In this way, the first mounting portion 410 may provide support for the first end of the guide 200, thereby helping to improve the stability of the assembly of the guide 200, helping to prevent the guide 200 from loosening or falling off, and also helping to prevent bending deformation of the guide 200 after being stressed. In addition, the proximal end of the channel tube 100 and the first end of the guide 200 are both disposed at the first mounting portion 410, and thus the proximal end of the channel tube 100 can be maintained in a shape by the first mounting portion 410, so as to avoid damage caused by repeated bending of the proximal end of the channel tube 100.

According to some alternative examples, the operating portion 400 has a mounting cavity 430. Illustratively, the guide 200 is disposed within the mounting cavity 430. Referring to fig. 10, the first mounting portion 410 has a first mounting hole 411. The first mounting hole 411 extends in a tangential direction of the first end of the guide portion 210. At least a portion of the proximal end of the channel tube 100 is positioned in the first mounting hole 411, such that the first mounting portion 410 can define the shape of the channel tube 100 positioned in the first mounting hole 411, such that the shape of the channel tube 100 positioned in the first mounting hole 411 can be adapted to the first mounting hole 411, thereby being beneficial to preventing repeated bending of the end of the channel tube 100 connected to the guide member 200, and achieving the purpose of protecting the channel tube 100. At least a portion of the first end of the guide member 200 is positioned within the first mounting hole 411 such that the first mounting portion 410 may provide support for the first end of the guide member 200, thereby advantageously increasing the stability of the first mounting portion 410 and advantageously preventing the second end of the guide member 200 from being separated from the insertion interface member 300.

Referring to fig. 9 and 10, the second mounting part 420 has a second mounting hole 421. In an alternative embodiment, at least a portion of the second end of the guide 200 is positioned within the first mounting hole 411. In this way, the second mounting portion 420 can provide support for the second end of the guide member 200, thereby advantageously improving the stability of the guide member 200, and advantageously reducing the stress at the connection of the insertion interface member 300 and the guide member 200, and preventing the guide member 200 from falling off.

The endoscope in the embodiment of the application may be a bronchoscope, a pyeloscope, a esophagoscope, a gastroscope, a enteroscope, an otoscope, a nasoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, and the like, and the type of the endoscope is not particularly limited in the embodiment of the application.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model.

Claims (10)

1. A channel assembly for an endoscope, the channel assembly comprising a channel tube (100), a guide (200) and an insertion interface (300), the guide (200) having an arcuate guide portion (210), the guide portion (210) having a first end and a second end in an extension direction, the guide portion (210) having a first channel cavity (211), the first channel cavity (211) extending through the guide portion (210) in the extension direction of the guide portion (210);

the extending direction of the channel tube (100) is provided with a proximal end and a distal end, the proximal end of the channel tube (100) is connected with the first end of the guide part (210), and the lumen of the channel tube (100) is communicated with the first channel cavity (211);

the insertion interface (300) has a second channel cavity (310) extending through the insertion interface (300), the second end of the guide (210) is connected to the insertion interface (300), and the first channel cavity (211) is in communication with the second channel cavity (310).

2. Channel assembly according to claim 1, characterized in that the guide (200) is made of a hard material.

3. The channel assembly according to claim 2, wherein the guide (200) is made of metal.

4. A channel assembly according to any one of claims 1 to 3, wherein the insert interface member (300) has a first channel portion (320), the first channel portion (320) being connected to the second end of the guide portion (210), the insert interface member (300) has a first subchamber (311), the first subchamber (311) extending through the first channel portion (320) in a tangential direction of the second end of the guide portion (210), and the first subchamber (311) being in communication with the first channel chamber (211).

5. The channel assembly according to claim 4, wherein the guide member (200) further comprises a first connection portion (230), the first connection portion (230) being provided at the second end of the guide portion (210), the first connection portion (230) extending in a tangential direction of the second end of the guide portion (210) and being connected to the insertion interface member (300);

the first connecting portion (230) is provided with a third channel cavity (221), the third channel cavity (221) penetrates through the first connecting portion (230) along the extending direction of the first connecting portion (230), one end of the third channel cavity (221) is communicated with the first channel cavity (211), and the other end of the third channel cavity (221) is communicated with the second channel cavity (310).

6. The channel assembly according to claim 4, wherein the proximal end of the channel tube (100) is provided with a first tube section (110), the first tube section (110) being in communication with the first end of the guide portion (210), and the first tube section (110) extending in a tangential direction of the first end of the guide portion (210) in a direction away from the guide portion (210).

7. The channel assembly according to claim 6, wherein the proximal end of the channel tube (100) is further provided with a second tube section (120), the second tube section (120) is connected to an end of the first tube section (110) adjacent to the guide portion (210), and the second tube section (120) is sleeved on an end of the guide member (200) adjacent to the channel tube (100); and/or the number of the groups of groups,

the guide piece (200) further comprises a second connecting part (220), wherein the second connecting part (220) is arranged at the first end of the guide part (210), and the second connecting part (220) extends along the tangential direction of the first end of the guide part (210) and is connected with the proximal end of the channel tube (100); the second connecting portion (220) is provided with a fourth channel cavity (231), the fourth channel cavity (231) penetrates through the second connecting portion (220) along the extending direction of the second connecting portion (220), the proximal end of the channel tube (100) is at least partially sleeved on the second connecting portion (220), one end of the fourth channel cavity (231) is communicated with the first channel cavity (211), and the other end of the fourth channel cavity (231) is communicated with the tube cavity of the channel tube (100).

8. An endoscope comprising the channel assembly of any one of claims 1 to 7.

9. The endoscope of claim 8, further comprising an operating portion (400), the operating portion (400) comprising a first mounting portion (410) and a second mounting portion (420), the proximal end of the channel tube (100) being disposed at the first mounting portion (410), the insertion interface (300) being disposed at the second mounting portion (420), the first end of the guide (200) being connected to the first mounting portion (410).

10. The endoscope of claim 9, characterized in that the first mounting portion (410) has a first mounting hole (411), the first mounting hole (411) extending in a tangential direction of the first end of the guide portion (210), at least part of the proximal end of the channel tube (100) being located in the first mounting hole (411), at least part of the first end of the guide (200) being located in the first mounting hole (411);

and/or the second mounting part (420) is provided with a second mounting hole (421), and at least part of the second end of the guide piece (200) is positioned in the first mounting hole (411).

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