CN119818005A

CN119818005A - Front end assembly, insertion part and endoscope

Info

Publication number: CN119818005A
Application number: CN202510318988.4A
Authority: CN
Inventors: 周冠华; 姜镇东; 李想
Original assignee: Hunan Vathin Medical Instrument Co Ltd
Current assignee: Hunan Vathin Medical Instrument Co Ltd
Priority date: 2025-03-18
Filing date: 2025-03-18
Publication date: 2025-04-15
Anticipated expiration: 2045-03-18
Also published as: CN119818005B

Abstract

The present invention discloses a front-end assembly, an insertion part and an endoscope, and belongs to the technical field of endoscopes. The front-end assembly includes a front-end seat, a guide and an adjusting member, the front-end seat has an instrument channel, and the distal opening of the instrument channel is located at the circumferential side wall of the front-end seat; the guide is movably connected to the front-end seat and can move relative to the front-end seat so that at least part of the guide moves outside the front-end seat, and the angle between the part of the guide located outside the front-end seat and the radial direction of the front-end seat is less than 90 degrees; the adjusting member is installed on the guide member; when at least part of the guide extends outside the front-end seat, the adjusting member can extend out of the front-end seat synchronously with the guide member; and at least part of the distal opening is located on the proximal side of the guide member, and is used for the guide wire to pass through; the adjusting member can deform and/or move toward the proximal side of the guide member to push the guide wire located on the proximal side of the guide member to move. The present application sets an adjusting member to adjust the position of the guide wire and improve the adjustment accuracy of the end position of the guide wire.

Description

Front end assembly, insertion part and endoscope

Technical Field

The invention relates to the technical field of endoscopes, in particular to a front end assembly, an insertion part and an endoscope.

Background

The endoscope is a medical instrument, and comprises an insertion part, a front end seat is arranged at the distal end of the insertion part, a camera module is arranged on the front end seat, and the insertion part can enter the human body through a natural cavity channel of the human body or an operation incision, so that sufficient diagnosis information is provided for doctors to treat diseases.

In ERCP (endoscopic retrograde cholangiopancreatography) procedures, a guidewire is first passed through the duodenal papilla into the common bile duct or pancreatic duct. However, since the hole of the duodenal papilla is small, in actual operation, the difficulty of the guide wire passing through the duodenal papilla is high, and the inner walls of the duodenal papilla and the nearby cavity are easily damaged, so that the operation risk is increased.

Disclosure of Invention

The application aims to provide a front end component, an insertion part and an endoscope, which solve the technical problems in the prior art.

The application is realized in the following way:

In a first aspect, embodiments of the present application provide a front end assembly for an endoscope, the front end assembly including a front end housing having an instrument channel with a distal opening at a circumferential side wall of the front end housing, a guide movably coupled to the front end housing, the guide being movable relative to the front end housing such that at least a portion of the guide moves out of the front end housing with an angle between a portion of the guide located out of the front end housing and a radial direction of the front end housing being less than 90 degrees, and an adjustment member mounted to the guide, the adjustment member being capable of simultaneously extending out of the front end housing with the guide with at least a portion of the guide extending out of the front end housing, and with at least a portion of the distal opening located on a proximal side of the guide for a guide wire to pass therethrough, the adjustment member being capable of deforming and/or moving toward the proximal side of the guide to urge the guide wire located on the proximal side of the guide.

In a second aspect, embodiments of the present application provide an insert comprising the front end assembly provided by the embodiments of the first aspect.

In a third aspect, embodiments of the present application provide an endoscope comprising the insertion portion provided by the embodiments of the second aspect.

The technical scheme provided by the application can achieve the following beneficial effects:

According to the application, the guide piece is arranged to extend out of the front end seat, at least part of the distal opening of the instrument channel is positioned at the proximal side of the guide piece, the movable range of the guide wire extending out of the distal opening is limited at the proximal side of the guide piece, the adjusting piece is arranged and can deform and/or move towards the proximal side of the guide piece, so that the guide wire positioned at the proximal side of the guide piece is pushed to move, the position of the guide wire is adjusted, and because the adjusting piece is positioned out of the front end seat and is closer to the end part of the guide wire, the distance of the end part of the guide wire moving is shorter when the adjusting piece pushes the guide wire to move, the adjusting precision of the end part of the guide wire can be improved to a certain extent, the guide wire can be more easily corresponding to a hole on a duodenal nipple, the difficulty of an operator in controlling the guide wire to pass through the duodenal nipple is reduced, the probability of damaging the duodenal nipple and the inner wall of a nearby cavity is reduced, and the surgical risk is reduced.

Drawings

In order to more clearly illustrate the embodiments of the invention 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 invention, 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 the overall structure of a front end assembly provided in some embodiments of the present application;

FIG. 2 is a schematic illustration of the cooperation of a front end assembly with a guidewire according to some embodiments of the present application;

FIG. 3 is a cross-sectional view of a mating structure of a front end assembly and a guidewire provided in accordance with some embodiments of the present application;

FIG. 4 is a second cross-sectional view of a mating structure of a front end assembly and a guidewire provided in accordance with some embodiments of the present application;

FIG. 5 is a schematic view of a front end housing according to some embodiments of the present application;

FIG. 6 is a schematic illustration of a guide provided in accordance with some embodiments of the present application;

FIG. 7 is a second schematic structural view of a guide member according to some embodiments of the present application;

FIG. 8 is a second schematic illustration of the cooperation of a front end assembly with a guidewire provided in some embodiments of the present application;

FIG. 9 is a third cross-sectional view of a mating structure of a front end assembly and a guidewire provided in accordance with some embodiments of the present application;

FIG. 10 is a schematic view of a guide member according to some embodiments of the present application;

FIG. 11 is a schematic illustration of the cooperation of a front end assembly with a guidewire according to some embodiments of the present application;

FIG. 12 is a cross-sectional view fourth of a mating structure of a front end assembly and a guidewire provided in accordance with some embodiments of the present application;

FIG. 13 is a schematic view of a guide member according to some embodiments of the present application;

FIG. 14 is a schematic view of an endoscope provided in some embodiments of the present application;

fig. 15 is a schematic view of the use of an endoscope provided by some embodiments of the present application.

In the drawing, 100-front end seat, 110-instrument channel, 111-distal opening, 120-mounting groove, 121-first extension, 122-second extension, 123-third extension, 130-mounting groove, 200-guide, 300-adjusting piece, 400-trachea, 500-elastic piece, 600-guide wire, 700-connecting block, 800-camera module, 900-pre-bending section, 10-endoscope, 11-endoscope handle, 12-inserting part, 21-common bile duct, 22-pancreas main, 23-duodenal papilla, 24-duodenum.

Detailed Description

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

In the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally indicates that the associated object is an "or" relationship.

In various embodiments of the present application, "proximal" and "distal" refer to the endoscope and its accessories in the environment of use, relative to the user's proximal-distal position, 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 ERCP operation, the instrument channel exit of the endoscope used is located at the circumferential side wall of the front end housing, and the camera module is also disposed at the circumferential side wall of the front end housing. The guide wire is inserted into the instrument channel, and after the guide wire extends into the front end seat, the guide wire bends in the front end seat and then extends out towards an outlet of the instrument channel positioned on the circumferential side wall of the front end seat. In the related art, a forceps lifter is generally arranged in a front end seat of an insertion part, the forceps lifter is in contact with a part of guide wire positioned in the front end seat, and the guide wire is driven to move by the forceps lifter, so that the position of the distal end of the guide wire is controlled, and the distal end of the guide wire is aligned with a hole of a duodenal papilla. In practice, the difficulty of aligning the guide wire with the orifice of the duodenal papilla is high.

The inventor researches and discovers that the small-amplitude action of the forceps lifter can also cause the distal end of the guide wire to move greatly due to the fact that the contact point of the forceps lifter and the guide wire is far away from the distal end of the guide wire, so that the forceps lifter has low control precision on the distal end position of the guide wire, and the guide wire is difficult to align with the duodenal papilla.

In view of the above, embodiments of the present application provide a front end assembly that is applied to an endoscope 10. The front end assembly includes a front end mount 100, a guide 200, and an adjuster 300.

Referring to fig. 1 to 5, the front end mount 100 has an instrument channel 110, a distal opening 111 of the instrument channel 110 is located at a circumferential side wall of the front end mount 100, and the camera module 800 is also mounted at the circumferential side wall of the front end mount 100. During surgery, the circumferential side wall of the front end mount 100 is aligned with the duodenal papilla 23, and the guidewire 600 extends from the distal opening 111 at the circumferential side wall of the front end mount 100, facilitating extension of the guidewire 600 to the duodenal papilla 23. The instrument channel 110 of the front end housing 100 is used for insertion of other instruments needed for use in surgery, such as catheters, in addition to the guide wire 600.

The guide member 200 is movably connected with the front end socket 100, the guide member 200 can move relative to the front end socket 100, and the position of the guide member 200 is changed so that at least part of the guide member 200 can move to the front end socket 100, and an included angle between a part of the guide member 200 located outside the front end socket 100 and a radial direction of the front end socket 100 is smaller than 90 degrees, as shown with reference to fig. 8,9, 11 and 12. The adjusting member 300 is mounted on the guide member 200, as shown with reference to fig. 6 and 8 to 13.

Limiting the angle between the guide 200 located outside the front end housing 100 and the front end housing 100 ensures that the guide 200 has a component located radially of the front end housing 100 in the event that the guide 200 moves outwardly of the front end housing 100. In actual surgical operation, the guide 200 is allowed to approach toward the duodenal papilla 23 corresponding to the sidewall of the front-end seat 100, facilitating the guiding of the guide wire 600 using the guide 200.

In the case that at least a part of the guide 200 protrudes out of the front-end holder 100, the adjusting member 300 can protrude out of the front-end holder 100 in synchronization with the guide 200. And, at least a portion of distal opening 111 is located on the proximal side of guide 200 and is configured for passage of guidewire 600 therethrough. The embodiment of the present application has a limitation on the relative positions of the guide member 200 and the distal opening 111 such that at least a portion of the distal opening 111 is located on the proximal side of the guide member 200, the portion of the distal opening 111 being for the passage of the guidewire 600, the guidewire 600 extending from the portion of the distal opening 111. The adjustment member 300 can be deformed and/or moved toward the proximal side of the guide member 200 to urge the guidewire 600 positioned on the proximal side of the guide member 200 to move.

The adjustment member 300 is positioned outside the front end housing 100 and deformation and/or movement of the adjustment member 300 is used to urge the guide wire 600 to move, thereby changing the position of the distal end of the guide wire 600 so that the distal end of the guide wire 600 can be aligned with the hole of the duodenal papilla 23. Compared with the forceps lifter in the related art, the position of the adjusting piece 300 provided by the embodiment of the application is closer to the distal end of the guide wire 600, the small movement of the adjusting piece 300 can not cause the large movement of the distal end of the guide wire 600, the control precision of the adjusting piece 300 on the distal end of the guide wire 600 is higher, the distal end of the guide wire 600 is easier to align with the hole of the duodenal papilla 23, the difficulty of penetrating the guide wire 600 into the duodenal papilla 23 is reduced, the probability of damaging the duodenal papilla 23 and the inner wall of the adjacent cavity is reduced, and the operation risk is reduced.

The adjusting member 300 needs to extend out of the front end seat 100 together with the guiding member 200, and the adjusting member and the guiding member cooperate to control the position of the guide wire 600 more accurately. The farther the adjuster 300 is from the front end mount 100, the closer to the distal end of the guidewire 600, and the greater the accuracy of the adjustment of the distal end of the guidewire 600.

The guide wire 600 extends from the front end seat 100, and referring to fig. 3 and 4, the bending point of the guide wire 600 in the instrument channel 110 is close to the distal end of the front end seat 100, the guide wire 600 is close to the inner wall of the instrument channel 110 close to the distal end of the front end seat 100 and moves towards the outside of the front end seat 100, the guide piece 200 is arranged on the distal end side of the guide wire 600 compared with the guide piece 200 on the proximal end side of the guide wire 600, the distance between the guide wire 600 and the guide piece 200 is closer, and the position of the guide wire 600 can be adjusted by the adjusting piece 300 more conveniently. After the guide wire 600 extends out of the instrument channel 110, the proximal end side of the guide wire 600 is the inside of the instrument channel 110, the distal end side is the inner wall of the instrument channel 110, the limiting guide member 200 and the adjusting member 300 are positioned on the distal end side of the guide wire 600, and the guide wire 600 can be smoothly pushed to adjust the position towards the inner side of the instrument channel 110 when the adjusting member 300 acts.

In addition, the guide 200 is located at the distal end side of the guide wire 600, and the guide 200 can limit guide the guide wire 600, even if the guide wire 600 is accidentally moved toward the distal end direction of the front end seat 100 after being extended out of the instrument channel 110, the guide 200 is located on the moving path of the guide wire 600, preventing the guide wire 600 from continuing to move, and after the guide wire 600 contacts the guide 200, the guide wire 200 can be moved along the extending direction of the guide wire 200 to smoothly reach the target position.

The guide member 200 may generally have a plate-like structure, which has a better effect of limiting and guiding the guide wire 600, and the adjusting member 300 needs to be disposed wider to ensure that the adjusting member 300 can smoothly contact the guide wire 600 and adjust the position of the guide wire 600.

Because the guide piece 200 is arranged to extend to the front end seat 100, the guide piece 200 can be used for being in tight fit with the inner wall of the cavity near the duodenal papilla 23, so that the position of the front end seat 100 is limited, the position of the front end seat 100 can be kept relatively stable, and the guide wire 600 can be regulated and controlled conveniently. Meanwhile, the duodenal papilla 23 and the front end seat 100 can be relatively spread by utilizing the guide piece 200, so that the operation space is increased, and the subsequent operation is facilitated. The guide 200 may extend only partially to the front end base 100, or may extend entirely to the front end base 100.

Use of the front end assembly referring to fig. 15, endoscope 10 is inserted into duodenum 24, guide 200 is extended from front end housing 100 and is tightened against the wall of the cavity around duodenal papilla 23, stabilizing the position of front end housing 100, and supporting a certain working space. Common bile duct 21 and common pancreatic duct 22 communicate with duodenal papilla 23. The control wire 600 is then extended out of the front end seat 100, and when the distal end of the guide wire 600 is moved around the duodenal papilla 23, the control adjustment member 300 is deformed and/or moved, the adjustment member 300 is positioned between the guide wire 600 and the guide member 200, and after the adjustment member 300 is changed, the guide wire 600 is pushed to move in position, so that the guide wire 600 can be aligned with the hole of the duodenal papilla 23.

The guide 200 may be mounted in the instrument channel 110 with the guide 200 extending directly from the instrument channel 110 to the outside of the instrument channel 110. The guide 200 may also be mounted around the instrument channel 110 within the front end housing 100, extending from the interior of the front end housing 100 toward the exterior of the front end housing 100. In other embodiments, the guide 200 may also be located on the distal end surface of the front end seat 100, slidingly engaged with the distal end surface of the front end seat 100, and move radially outward of the front end seat 100 from the distal end surface of the front end seat 100.

The adjusting member 300 is mounted on the guide member 200, and after the guide member 200 extends out of the front end seat 100, the adjusting member 300 can also move out of the front end seat 100 in synchronization with the guide member 200. The closer the adjuster 300 is to the end of the guide 200, the more the adjuster 300 is spaced from the front seat 100, and the higher the control accuracy of the guide wire 600. It should be noted that, synchronization of the movement of the adjusting member 300 and the guide member 200 out of the front end seat 100 means that, during the movement of the guide member 200 out of the front end seat 100, the adjusting member 300 mounted on the guide member 200 can also move out of the front end seat 100 following the guide member 200, and synchronization means that the movement is synchronized, and does not mean that the movement is synchronized in time, and does not mean that the guide member 200 and the adjusting member 300 are simultaneously moved out of the front end seat 100.

In some preferred embodiments, a groove may be provided on the guide member 200 in which the adjustment member 300 is mounted such that the surface of the adjustment member 300 may be flush with the surface of the guide member 200 prior to undeformed and/or moved, avoiding the protrusion of the adjustment member 300 relative to the surface of the guide member 200 from affecting the movement of the guide wire 600 out of the instrument channel 110, and avoiding the adjustment member 300 from obstructing the extension of the guide wire 600.

In some embodiments of the present application, referring to fig. 1-5, the front end mount 100 is provided with a mounting groove 120, the mounting groove 120 is provided adjacent to the instrument channel 110, the mounting groove 120 is used to mount the guide 200, and the opening of the mounting groove 120 is located at the circumferential side wall of the front end mount 100 and on the distal side of the distal end opening 111.

The guide member 200 is installed in the installation groove 120, and the installation position of the installation groove 120 needs to be matched with the guide member 200, so that the opening of the installation groove 120 is arranged at the circumferential side wall of the front end seat 100, the guide member 200 can extend out of the circumferential side wall of the front end seat 100, the extending direction of the guide member 200 is limited, and the condition that the guide member 200 extends out along the axial direction of the front end seat 100 is avoided. And the opening of the mounting groove 120 is located at the distal end side of the distal opening 111, ensuring that the guide 200 is located at the distal end side of the guide wire 600, facilitating the adjustment of the position of the guide wire 600 by the adjustment member 300.

The provision of the mounting groove 120 limits the position of the guide member 200 to avoid the guide member 200 being positioned within the instrument channel 110 from affecting the proper use of the guidewire 600. Meanwhile, when the guide member 200 is not required to be used, the guide member 200 can be retracted into the mounting groove 120, so that the normal movement and use of the front end 100 are prevented from being affected by the existence of the guide member 200.

In some preferred embodiments of the present application, referring to fig. 3-5, the mounting groove 120 extends from a circumferential sidewall of the front end seat 100 toward the proximal end of the front end seat 100. The mounting groove 120 extends substantially in the axial direction of the front end mount 100, and the guide 200 positioned in the mounting groove 120 can move more smoothly. The mounting groove 120 extends toward the proximal end of the front end base 100, and the mounting groove 120 may be made as long as possible, thereby increasing the length of the guide 200 mounted to the mounting groove 120. After the length of the guide member 200 is increased, the length of the guide member 200 that can extend out of the front end housing 100 is also increased, thereby accommodating different surgical conditions and improving the flexibility of use of the front end assembly.

Further preferably, referring to fig. 5, the mounting groove 120 includes a first extension 121, a second extension 122, and a third extension 123 in this order from the proximal end of the front-end socket 100 to the distal end thereof. The first extension section 121 extends along the axial direction of the front end seat 100, and the second extension section 122 has an arc-shaped structure and is connected with the first extension section 121 and the third extension section 123. The third extension 123 extends along the radial direction of the front end seat 100, and the opening of the mounting groove 120 is located in the third extension 123. After the guide member 200 protrudes from the third extension section 123, the guide member 200 is limited by the third extension section 123, so that the guide member 200 can move along the radial direction of the front end seat 100, so that the distance between the guide member 200 and the guide wire 600 can be as short as possible, and the position of the guide wire 600 can be adjusted by the adjusting member 300 more conveniently.

In some embodiments, the guide 200 is disposed straight, and when installed in the installation groove 120, the guide 200 is forced to bend, subject to the restriction of the installation groove 120. When the guide member 200 extends out of the mounting groove 120, the guide member 200 is positioned outside the mounting groove 120 and is more conveniently in tight fit with the inner wall of the body cavity by being limited by the third extension 123, and the guide member 200 extends along the radial direction of the front end seat 100.

In a surgical procedure, the distal end of the guide 200 is required to be in tight fit with the inner wall of the body cavity of the human body, and in some embodiments of the application, the end of the guide 200 is connected with a pre-curved section 900, as shown with reference to fig. 11-13. And in the case that at least part of the guide member 200 is located outside the front end seat 100, the pre-bending section 900 is located at the distal end side of the guide member 200, and the surface of the pre-bending section 900 is used for abutting against the inner wall of the cavity, so that the contact area between the guide member 200 and the inner wall of the cavity is increased, the unit area stress of the inner wall of the cavity is reduced, the risk that the inner wall of the body cavity of a human body is damaged is reduced, and the comfort level of a patient is improved.

At the same time, the pre-curved section 900 is located on the distal side of the guide 200, avoiding affecting the elongation of the guidewire 600. In the case that the guide 200 is mounted in the mounting groove 120, the pre-bending section 900 may be received in the mounting groove 120, and the groove wall of the mounting groove 120 limits the pre-bending section 900, so as to prevent the pre-bending section from being exposed to the front end seat 100, and thus, the normal movement of the front end seat 100 in the body cavity is prevented. After the pre-bent segment 900 extends out of the mounting slot 120, the pre-bent segment 900 may be bent normally. The guide 200 and pre-curved section 900 may be of unitary construction. The bending angle of the pre-bent section 900 is preferably greater than or equal to 120 degrees, avoiding the end of the pre-bent section 900 from abutting against the inner wall of the body cavity.

In some embodiments of the present application, the regulator 300 is in the form of a balloon, the regulator 300 is connected to a gas tube 400, the distal end of the gas tube 400 is in communication with the regulator 300, and the proximal end of the gas tube 400 extends toward the corresponding endoscope handle 11 of the front end assembly for connection to a gas source.

In the structure of the endoscope 10, the front end seat 100 is located at the distal end of the insertion portion 12, and the proximal end of the insertion portion 12 is connected to the endoscope handle 11. The proximal end of the trachea 400 extends to the endoscope handle 11 for connection to a gas source for inflating the regulator 300.

The adjustment member 300 is shown with reference to fig. 6 and 7 prior to inflation. After the adjusting member 300 is inflated, as shown in fig. 8 to 13, the adjusting member 300 is inflated to push the guide wire 600 to move, thereby adjusting the position of the guide wire 600.

In other embodiments, the adjustment member 300 may be movably coupled to the guide member 200 such that movement of the adjustment member 300 adjusts the position of the guidewire 600. Illustratively, the guide 200 is electromagnetically or electrically driven.

The articulation of the guide 200 with the front end mount 100 may, in some embodiments, be driven directly using electricity. In other embodiments of the present application, a combined structure using the elastic member 500 and the control string may be used to control the position of the guide 200.

Referring to fig. 4, 9, and 12, the front end assembly further includes an elastic member 500 and a control cord, the elastic member 500 being fixed between the front end housing 100 and the guide member 200, the elastic member 500 being in a stretched state in the case where the guide member 200 does not protrude out of the mounting groove 120, the elastic member 500 being in a stretched state for driving the guide member 200 to move toward the outside of the mounting groove 120.

The proximal end of the control cord is secured to guide 200 and the distal end of the control cord extends toward the corresponding endoscope handle 11 of the front end assembly to facilitate control of the control cord by the operator. The control cord is fixed to the guide member 200, and the guide member 200 is driven to move in the installation groove 120 by pulling the control cord. Meanwhile, since the guide member 200 is further connected to the elastic member 500, the length of the elastic member 500 is changed after the position of the guide member 200 is changed.

By pulling the control cord, the operator controls the guide 200 to move toward the endoscope handle 11, and by releasing the control cord, the guide 200 moves toward the outside of the mounting groove 120 under the driving of the elastic member 500.

Referring to fig. 6 and 7, the elastic member 500 is in a stretched state in the case where the guide member 200 does not protrude out of the mounting groove 120. Referring to fig. 10, 12 and 13, in the case where the guide 200 is extended out of the mounting groove 120, the length of the elastic member 500 is reduced and the degree of stretching is reduced.

The elastic member 500 may be installed in the installation groove 120 to be coupled with the guide 200. The elastic member 500 may be a spring structure, or may be a structure made of other elastic materials such as rubber. In some embodiments, the front-end mount 100 is further provided with a fitting groove 130, and the fitting groove 130 is connected with the mounting groove 120, as shown with reference to fig. 5. One part of the elastic member 500 is installed in the assembly groove 130, and the other part extends to the installation groove 120 to be coupled with the guide member 200. The fitting groove 130 is provided to provide a sufficient installation space for the elastic member 500, and a more sufficient driving force for the guide member 200 is provided corresponding to the longer elastic member 500 being installed.

In some preferred embodiments, in the case that the adjusting member 300 is of a balloon structure, the adjusting member 300 is connected with the air tube 400, the distal end of the air tube 400 is communicated with the adjusting member 300, the proximal end of the air tube 400 extends toward the corresponding endoscope handle 11 of the front end seat 100, the control cord is the air tube 400, the air tube 400 is directly used as the control cord, and the air tube 400 is used for driving the guide member 200 to move, so that the structure of the front end assembly can be simplified.

It should be noted that the air tube 400 is connected to the guide 200 in addition to the adjusting member 300. In order to avoid the connection between the air tube 400 and the two from falling off, the connection part between the air bag and the two can be additionally fixed by using glue solution. In addition, in some embodiments, a connection block 700 is further provided, and as shown with reference to fig. 6 and 7, the guide 200, the air tube 400, and the elastic member 500 are simultaneously connected using the connection block 700 to ensure that the elastic member 500 can be simultaneously expanded and contracted when the guide 200 is pulled to move using the air tube 400.

Embodiments of the present application also provide an insertion portion 12 including the front end assembly provided by any of the embodiments described above. Referring to fig. 14, the front seat 100 of the front assembly is located at the far end of the insertion portion 12.

Embodiments of the present application also provide an endoscope 10 including the insertion portion 12 provided in the above-described embodiments. Referring to fig. 14, the endoscope 10 further includes an endoscope handle 11, and the proximal end of the insertion portion 12 is connected to the endoscope handle 11.

The endoscope 10 provided in the embodiment of the present application may be a biliary pancreatic endoscope 10, or may be an endoscope 10 that needs to adjust the position of an extension member, such as a nephroscope, bronchoscope 400, esophagoscope, gastroscope, enteroscope, otoscope, rhinoscope, stomatoscope, laryngoscope, colposcope, laparoscope, arthroscope, etc., and the embodiment of the present application does not specifically limit the type of the endoscope 10.

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.

The foregoing is merely illustrative of the present invention, and the present invention 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 invention.

Claims

1. A front end assembly for use with an endoscope (10), comprising:

A front end mount (100), the front end mount (100) having an instrument channel (110), a distal opening (111) of the instrument channel (110) being located at a circumferential side wall of the front end mount (100);

The guide piece (200) is movably connected with the front end seat (100), the guide piece (200) can move relative to the front end seat (100) so that at least part of the guide piece (200) moves out of the front end seat (100), and an included angle between the guide piece (200) positioned out of the front end seat (100) and the radial direction of the front end seat (100) is smaller than 90 degrees;

an adjusting member (300), the adjusting member (300) being mounted to the guide member (200);

With at least part of the guide (200) protruding out of the front seat (100), the adjusting member (300) can be protruded out of the front seat (100) in synchronization with the guide (200), and at least part of the distal opening (111) is located on the proximal side of the guide (200) and is used for passing a guide wire (600), and the adjusting member (300) can be deformed and/or moved toward the proximal side of the guide (200) to push the guide wire (600) located on the proximal side of the guide (200) to move.

2. The front end assembly according to claim 1, characterized in that the front end housing (100) is provided with a mounting groove (120), the mounting groove (120) being provided adjacent to the instrument channel (110), the mounting groove (120) being used for mounting the guide (200), the opening of the mounting groove (120) being located at the circumferential side wall of the front end housing (100) and at the distal side of the distal opening (111).

3. The front end assembly of claim 2, characterized in that the mounting groove (120) extends from a circumferential side wall of the front end seat (100) towards a proximal end of the front end seat (100).

4. A front end assembly according to claim 3, characterized in that the mounting groove (120) comprises, in order from the proximal end of the front end seat (100) to the distal end thereof, a first extension (121), a second extension (122) and a third extension (123), the first extension (121) extending in the axial direction of the front end seat (100), the second extension (122) being of an arcuate configuration, the third extension (123) extending in the radial direction of the front end seat (100).

5. The front end assembly according to claim 1, characterized in that the end of the guide (200) is connected with a pre-bent section (900), said pre-bent section (900) being located outside the front end seat (100) with at least part of the guide (200) located outside the front end seat (100), and said pre-bent section (900) being located on the distal side of the guide (200), the surface of the pre-bent section (900) being intended to abut against the inner wall of the lumen.

6. The front end assembly of claim 1, wherein the regulator (300) is of balloon construction, the regulator (300) being connected to a gas tube (400), a distal end of the gas tube (400) being in communication with the regulator (300), a proximal end of the gas tube (400) extending toward a corresponding endoscope handle (11) of the front end assembly for connection to a gas source.

7. A front end assembly according to claim 3, characterized in that the front end assembly further comprises an elastic member (500) and a control cord, the elastic member (500) being fixed between the front end housing (100) and the guide member (200), the elastic member (500) being in a stretched state in case the guide member (200) does not protrude out of the mounting groove (120) to drive the guide member (200) to move out of the mounting groove (120);

The proximal end of the control cord is fixed with the guide member (200), the distal end of the control cord extends towards the endoscope handle (11) corresponding to the front end assembly, and the control cord can controllably pull the guide member (200) to move in the mounting groove (120) so as to adjust the stretching length of the elastic member (500).

8. The front end assembly according to claim 7, wherein the adjusting member (300) is of a balloon structure, the adjusting member (300) is connected with an air tube (400), a distal end of the air tube (400) is communicated with the adjusting member (300), a proximal end of the air tube (400) extends towards an endoscope handle (11) corresponding to the front end seat (100), and the control cord is the air tube (400).

9. An insert comprising the front end assembly of any one of claims 1-8.

10. An endoscope (10) comprising the insertion portion (12) of claim 9.