Endoscope head end and endoscope

Abstract

The head end portion of the endoscope is arranged on the front end side of an insertion portion in the insertion direction, and the head end portion comprises a side end opening portion arranged on a side face opening of the head end portion; the instrument channel is arranged in the insertion part, is provided with a channel opening, is communicated with the instrument channel and is used for leading out the guide wire; the forceps lifting device is arranged opposite to the channel opening and is provided with an abutting surface for abutting against the guide wire; a guide portion provided on the contact surface; the supporting seat is used for supporting the clamp lifting device and is provided with a guide matching part; in the lifting process of the clamp lifting device, the guide part and the guide matching part jointly act on the guide wire so that the guide wire can move along the guide-in path of the guide wire. After the clamp lifting device is lifted, the guide wire is fixed at the blade-shaped part of the guide part, and an included angle between the pressing force of the clamp lifting device acting on the guide wire and the moving direction of the clamp lifting device is an acute angle. According to the utility model, the guide wire can be prevented from being accidentally pulled out after the forceps lifting device is lifted, so that the guide wire is reliably kept at a preset position when a treatment instrument (except the guide wire) is replaced.

Description

Technical Field

[0001] This utility model relates to the field of medical endoscope technology, and in particular to an endoscope lens tip and an endoscope. Background Technology

[0002] The tip of the lateral endoscope insertion section is inserted near the duodenal papilla. From this point, under X-ray fluoroscopy, a guide wire through the insertion channel of the treatment instrument inserted into the insertion section protrudes from a side opening formed at the tip of the insertion section and is inserted into the aforementioned tube. The guide wire guides the selective insertion of the catheter or other treatment instrument into the pancreatic duct, bile duct, or hepatic duct. According to this method, once the guide wire is inserted into a narrower pancreatic duct, bile duct, or hepatic duct, the treatment instrument can be inserted and withdrawn relative to the aforementioned tube any number of times via the guide wire.

[0003] However, when the treatment instrument is inserted through the channel in the pancreatic duct, bile duct, or hepatic duct and then removed or exchanged, the guidewire may be pulled out along with the instrument. Due to the close contact between the treatment instrument and the guidewire, the guidewire and treatment instrument may sometimes be pulled out unintentionally or the position may slip, requiring the guidewire to be reinserted, which increases the complexity of the operation.

[0004] The prior art CN113473525A discloses that a guide wire can be fixed in a specific position by means of a guide wire holding part, which can be led out from the opening of the penetrating instrument channel. The first guide part and the second guide part can guide the guide wire to the specific position of the guide wire holding part and fix the guide wire. However, it does not achieve a locking fit between the lifting clamp and the support structure, nor can it ensure that the guide wire can still be reliably fixed by the lifting clamp through the structural fit between the lifting clamp and the support after the contact between the lifting clamp and the support is released or disengaged when the treatment instrument is withdrawn.

[0005] Therefore, the existing technology cannot solve the technical problem of the guidewire being accidentally pulled out when switching treatment instruments (excluding the guidewire) during the exchange of treatment instruments. Utility Model Content

[0006] This invention proposes an endoscope tip and endoscope, further optimizing the locking structure of the guidewire in the lifting clamp and support, so that the guidewire is always kept in a predetermined state during complex treatment instrument (excluding the guidewire) operations. Especially when changing treatment instruments (excluding the guidewire), the guidewire can be clamped and fixed by the blade-shaped part of the guidewire on the lifting clamp and the support, which can prevent the guidewire from being accidentally pulled out along with the treatment instrument (excluding the guidewire).

[0007] To achieve the above objectives, one embodiment of this utility model provides an endoscope lens endpiece disposed at the front end of the insertion part in the insertion direction, comprising:

[0008] Side opening, a side opening provided at the head end;

[0009] The instrument channel is located within the insertion section;

[0010] The channel opening is funnel-shaped and communicates with the instrument channel for guidewire delivery;

[0011] The lifting clamp is positioned opposite the opening of the instrument channel and has an abutment surface for the guidewire to abut.

[0012] The guide section is located on the contact surface;

[0013] Support base, used to support the lifting clamp, has a guiding mating part;

[0014] During the lifting process, the lifting clamp's guide part and guide mating part work together to move the guide wire along the guide wire's insertion path;

[0015] After the clamp lifter is lifted, the guide wire is fixed in the blade-shaped part of the guide section, and the angle between the clamping force of the clamp lifter on the guide wire and the direction of movement of the clamp lifter is an acute angle.

[0016] Optionally, one side protrusion of the guide portion has a blade-shaped portion. The blade-shaped structure cooperates with the guide mating portion to guide and constrain the guide wire to the blade-shaped portion formed at a predetermined position of the guide portion. The clamping and fixing of the guide wire is achieved through the cooperation and constraint between the blade-shaped portion and the guide mating portion.

[0017] Optionally, the guide portion includes a receiving groove disposed opposite to the predetermined position.

[0018] Optionally, the cross-section of the receiving groove is arc-shaped, and the central angle corresponding to the arc is less than 180°.

[0019] Optionally, the channel opening has a sidewall away from the side opening, and the guide portion of the lifting clamp has a predetermined area adjacent to the sidewall. Before the lifting clamp is lifted, the guide portion and the sidewall have a smooth transition, and the predetermined area is further away from the side opening relative to the sidewall.

[0020] Optionally, after the lifting clamp is lifted, the gap between the blade and the receiving groove does not exceed the diameter of the guide wire.

[0021] Optionally, the gap between the guide portion and the guidewire guide portion gradually decreases along the introduction direction of the introduction path.

[0022] Optionally, the abutment surface includes a generally V-shaped groove that is continuously arranged along the import path.

[0023] Optionally, the cross section of the guide mating part along the introduction path has one or more continuous semicircular arcs.

[0024] Optionally, a lateral limiting portion is provided along the extension direction of the contact surface and on the side near the blade-shaped portion. After the lifting clamp is lifted, the lateral limiting portion protrudes on the lifting clamp toward the base end of the insertion portion.

[0025] Optionally, after the clamp is lifted, there is a unique contact between the clamp and the support seat in the absence of a guide wire. This unique contact is the first contact between the lateral limiting parts of the support seat.

[0026] Optionally, the support base and the head end are integrally formed.

[0027] Another embodiment of this utility model provides an endoscope including the endoscope lens end of any of the aforementioned embodiments.

[0028] The beneficial technical effects of this utility model include at least the following:

[0029] Under the combined guidance and constraint of the lifting clamp's guide section and the support's guide mating section, the guide wire can be guided to the predetermined position corresponding to the blade-shaped portion of the guide section. After the lifting clamp is lifted, the blade-shaped portion and the support's guide mating section work together on the guide wire, clamping and fixing it at the position corresponding to the blade-shaped portion, providing reliable fixation of the guide wire. After the treatment instrument (excluding the guide wire) leaves the predetermined position, the guide wire can be reliably clamped and fixed by the combined action of the lifting clamp's blade-shaped portion and the support. This prevents the guide wire from being accidentally pulled out or detached from the designated position during operation due to the exchange of treatment instruments (excluding the guide wire). Attached Figure Description

[0030] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 A structural diagram of an endoscope system is shown;

[0032] Figure 2 A structural diagram of the tip of an endoscope is shown;

[0033] Figure 3 A structural diagram of the contact surface of the lifting clamp is shown;

[0034] Figure 4 A structural diagram of the tip of an endoscope with a guide section is shown;

[0035] Figure 5 A structural diagram of the tip of an endoscope is shown when the guidewire is in place.

[0036] Figure 6 A schematic diagram of a guidewire being clamped is shown;

[0037] Figure 7 A schematic diagram is shown of the state before the clamp lifter is lifted.

[0038] Figure 8 A structural diagram of the tip of an endoscope having a guide section and a guide mating section is shown;

[0039] Figure 9 A schematic diagram of a lifting clamp with a lateral limiting part is shown.

[0040] Explanation of reference numerals in the attached figures

[0041] 1: Endoscope, 2: Insertion section, 3: Operating section, 4: Universal cable, 5: Flexible section, 6: Bending section, 7: Head tip, 11: Processor, 12: Illumination unit, 13: Observation unit, 14: Display, 21: Instrument channel, 211: Channel opening, 31: Side opening, 32: Lifting forceps, 33: Rotating fulcrum, 34: Support base, 35: Abutment surface, 36: Guide section, 37: Guide mating section, 32a: Blade-shaped section, 32b: Lateral limiting section, 37a: Receiving groove. Detailed Implementation

[0042] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0044] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] The embodiments of this utility model will now be described with reference to the accompanying drawings. Furthermore, the drawings are schematic, and it should be noted that the relationship between the thickness and width of each component, the thickness ratio of each component, etc., differs from reality. The drawings naturally include portions with different dimensional relationships and ratios.

[0046] Figure 1 The endoscope 1 mainly includes an insertion part 2 that is inserted into the patient's (subject's) body, a base end of the insertion part 2 that is connected to the endoscope 1, and an operating part 3 for example. The endoscope 1 is connected to a processor device and a light source device via a universal cable 4, and the processor 11 is connected to a display 14.

[0047] The insertion section 2 is composed of a flexible section 5, a bending section 6, and a head section 7 arranged sequentially from the base end to the front end. The flexible section 5 is flexible and bends in any direction along the insertion path of the insertion section 2. The bending section 6 bends in the vertical direction by operating the angle knob of the operation section 3. The head section 7 is connected to the observation section of the observed part inside the imaging body via a universal cable 4, and the captured image is sent as an observation image (endoscopic image) to the processor 15 connected via the universal cable 4. The endoscope 1 includes an illumination unit 12, an observation unit 13, etc., for illuminating the observed part using illumination light propagating from the light source device through the light guide inside the endoscope 1.

[0048] In the following description, the insertion direction Q of the head end 7 (refer to...) Figure 2 The position of the front end 7 in the direction (axial direction is also synonymous) is called the front end side (or front side), and the position of the operating part 3 is called the base end side (or rear side). Before the clamp lifter 32 is lifted, it includes the state before lifting when the clamp lifter 32 is not lifted at all, and it also includes the state before lifting / during lifting when the clamp lifter is lifted to a certain angle but has not yet clamped the guide wire, so that the guide wire can extend from the clamp lifter.

[0049] like Figure 2As shown, the head end 7 has a side opening 31 at its side opening. An instrument channel 21 is disposed within the insertion part 2 and opens along the front end side of the insertion direction of the insertion part 2. This channel opening 211 is radially flared and communicates with the instrument channel 21, allowing the guide wire 23 to be led out. When inserting a guide wire or treatment instrument into the instrument channel 21 from the side opening 31, insertion is performed as follows: a known lifting clamp 32, which can be freely uprighted and inverted by rotation, is lifted through the receiving part 32, which communicates with the side opening 31 of the head end 7. The lifting clamp 32 is positioned facing the channel opening 211 on the front end side of the insertion direction of the instrument channel 21. One end of the lifting clamp 32 is connected to the instrument channel 21 and is rotatably mounted on a lifting clamp rotation fulcrum 33 located on the front end side of the head end 7. The support base 34 is located inside the head end 7 on the base side of the insertion part 2, and is disposed opposite to the channel opening 211 of the instrument channel 21. It supports the guide wire 23 that is led out from the channel opening 211 of the instrument channel 21 toward the side opening 31 as the lifting forceps 32 is lifted. The guide part 36 is disposed at a predetermined position 32d on the lifting forceps 32 where the guide wire 23 abuts, and can prevent the guide wire 23 from moving out of the predetermined position 32d.

[0050] like Figures 3 to 6 As shown, the guide portion 36 is provided on the contact surface 35. The guide portion 36 extends along the guide wire 23's guide path 24 extending from the channel opening 211 of the instrument channel 21 to the position corresponding to the blade portion 32a, and the guide wire 23 can be pressed into contact with the blade portion 32a to achieve clamping and fixation.

[0051] The guide path 24 extends from the channel opening 211 in the same direction as the guide wire 23. The guide path 24 provides stable guidance for the guide wire 23, ensuring that the guide wire or other treatment tools can smoothly reach the designated position. The guide direction is the direction of the guide wire's movement from the instrument channel 21 towards the side opening 31 of the endoscope 1. The support base 34 supports the lifting forceps 32 and has a guiding engagement part 37 that cooperates with the guiding part to guide the movement of the guide wire 23. During the lifting of the lifting forceps 32, the guide wire 23 first extends from the channel opening 211 of the instrument channel 21 and abuts against the abutment surface 35 of the lifting forceps 32. The guide wire slides into contact with the guiding part 36 and gradually contacts the guiding engagement part 37 on the support base 34, jointly guiding and constraining the guide wire to the blade-shaped portion 32a of the guiding part 36. After the lifting forceps 32 is lifted, the guide wire 23 is guided to the blade-shaped portion 32a and, through the cooperation of the guiding engagement part 37, is fixed at the blade-shaped portion 32a. After the clamping device 32 is lifted, the clamping force of the clamping device 32 acting on the guide wire 23 has an angle of no more than 90° with the direction of movement of the clamping device 32. The clamping force can hold the guide wire 23 on the blade-shaped part 32a through the crimping action, thus maintaining the stability of the guide wire 23 when it is crimped.

[0052] One side of the guide portion 36 has a protruding ridge, and the protruding ridge is provided with a blade-shaped portion 32a that can press against the guide wire 23. The blade-shaped portion 32a has a certain length on the protruding ridge. When the guide wire 23 moves along the guide path 24, the blade-shaped portion 32a at a certain position in the protruding ridge can be clamped depending on the different settings such as the gap between the guide portion 36 and the guide mating portion 37 and the diameter of the guide wire 23.

[0053] To ensure that the guide wire 23 is more reliably clamped and fixed at the blade-shaped portion 32a, a receiving groove 37a is provided opposite to the blade-shaped portion 32a in the guiding mating portion 37. The receiving groove 37a allows the guide wire 23 to be received simultaneously when guided to the blade-shaped portion 32a. The receiving groove 37a and the blade-shaped portion 32a work together to achieve reliable clamping and fixing of the guide wire 23, so that the guide wire 23 can be reliably fixed at the root of the blade-shaped portion 32a. The root of the blade-shaped portion is designed with a blade structure that is almost perpendicular to the loosening direction of the guide wire 23, thereby providing the best fixing effect.

[0054] Specifically, the cross-section of the receiving groove 37a is arc-shaped, and the central angle corresponding to the arc is less than 180°. The receiving groove 37a can be formed as a curved surface that transitions substantially continuously from a central depression to raised sides, and the central angle of the arc formed by this cross-section does not exceed 180 degrees, which allows the guide wire to smoothly enter the receiving groove 37a along the guide mating part 37.

[0055] In one embodiment, the amount of inclination or bending (R) of the receiving groove 37a may be sufficient to smoothly guide the contacted guide wire 23 to the guide portion 36 constituting the lifting clamp 32 as described later, or may not be particularly limited.

[0056] In this embodiment, the guide portion 36 may have a generally V-shaped groove. The cross-sectional width of the guide portion 36 in the direction of the guide portion 36 continuously decreases. After the guide wire 23 extends through the instrument channel 21, it forms a V-shaped groove contact with the guide portion 36 of the lifting clamp 32. The V-shaped groove can reliably capture the guide wire 23, ensuring that the guide wire is stably guided to the guide portion 36 after the initial stage. The guide wire 23 is guided by the guide portion 36 and the guide mating portion 37 working together to guide the guide wire 23 to the blade-shaped portion 32a. The guide wire 23 is reliably clamped and fixed under the combined action of the blade-shaped portion 32a and the receiving groove 37a.

[0057] In this embodiment, the entire side or a portion of the side of the protrusion of the guide portion 36 is configured as a blade-shaped portion 32a. When the guide wire 23 is pressed into the blade-shaped portion 32a of the guide portion 36, the surface of the guide wire 23 is slightly embedded by the surface structure of the blade-shaped portion 32a, thereby increasing the contact friction. Ultimately, the guide wire 23 is completely constrained within the blade-shaped portion 32a and the receiving groove 37a of the guide portion 36. The blade-shaped portion 32a can form a press-fit contact on the surface of the guide wire 23, so that when the treatment instrument (other than the guide wire) leaves, the guide wire 23 is not carried out by other treatment instruments (other than the guide wire).

[0058] In this embodiment, the blade-shaped portion 32a provided on the protrusion of the guide portion 36 can be configured as a blade-shaped structure including hook shape, serration shape, wedge shape, etc. The blade-shaped structure applies a further clamping force when the guide wire is clamped and fixed, thereby enhancing the reliability of clamping and fixing.

[0059] like Figure 6 As shown, when the guide wire 23 is clamped and fixed at the blade-shaped portion 32a, the contact surfaces corresponding to the guide portion 36 and the guide mating portion 37 can be formed as inclined surfaces. The inclined surfaces cause the force applied to the guide wire 23 by the lifter 32 to be decomposed into two components: one part is the clamping force F = Fv / cosα directly applied to the guide wire. As the lifter 32 is lifted, the angle between the blade-shaped portion 32a at the predetermined position 32d and the direction of movement of the lifter 22 changes continuously. The angle gradually increases and never exceeds 90°, thus amplifying the clamping force applied to the guide wire 23. After the lifter 32 is lifted, a force amplification structure is formed, which can enhance the clamping force on the guide wire 23 and improve the reliability of clamping and fixing the guide wire 23.

[0060] like Figure 7 As shown, the channel opening 211 is funnel-shaped and has a sidewall 31a away from the side opening 31. The guide portion 35 of the lifting clamp 32 has a predetermined region 35a adjacent to the sidewall 31a. Before the lifting clamp 32 is lifted, the guide portion 35 and the sidewall 31a have a smooth transition, and the predetermined region 35a is further away from the side opening relative to the sidewall 31a. After the treatment instrument (excluding the guidewire) extends from the instrument channel 21, it gradually moves along the sidewall 31a where the rotation fulcrum 33 of the lifting clamp 32 is fixed to the guide portion 35 of the lifting clamp 32. There is a reserved gap between the guide portion of the lifting clamp 32 and the sidewall 31a of the channel opening at the tip 7, allowing the treatment instrument (excluding the guidewire) to gradually reach the guide portion 35 of the lifting clamp 32 along the sidewall 31a. The predetermined area 35a on the guide portion 35 is further away from the side opening 31 relative to the side wall 31a, so that the treatment instrument can smoothly reach the lifting forceps 32 along the channel opening 211 and be guided by the guide portion 35. This can prevent larger treatment instruments (such as cholangioscopes) from getting stuck in the introduction path when they reach the guide portion 35 of the lifting forceps 32.

[0061] Furthermore, the treatment device (excluding the guide wire) is designed to maintain an acute angle with the tangent of the inner surface of the guide portion 35 of the lifting clamp 211 during its movement after extending along the channel outlet 211. This design prevents the treatment device (excluding the guide wire) from getting stuck when it reaches the predetermined area 35a of the lifting clamp 32 during its movement to the guide portion of the lifting clamp 32, ensuring that the treatment device (excluding the guide wire) can smoothly reach the designated position.

[0062] like Figure 8 As shown, with the rotation of the clamp 32 (lifting process), the tip of the guide wire 23 first contacts the contact surface 35 of the clamp 32. The contact surface 35, where the guide wire 23 contacts, restricts the lateral freedom of the guide wire. As the gap between the guide portion 36 and the guide mating portion 37 gradually decreases, the guide wire 23 can be gradually guided along the guide path formed by the gap to the predetermined position corresponding to the blade portion 32a and the receiving groove 37a. Taking the zebra guide wire as an example, during the lifting process of the clamp 32, the distance between the guide part 36 and the guide mating part 37 is greater than the diameter of the zebra guide wire, for example, greater than 0.8 mm. As the guide wire 23 moves, after the clamp 32 is lifted, the blade-shaped part 32a on the clamp 32 and the receiving groove 37a on the support 34 together clamp the zebra guide wire. The distance between the blade-shaped part 32a and the bottom of the receiving groove 37a is designed to be less than the diameter of the zebra guide wire by 0.6 mm to ensure that the zebra guide wire is reliably clamped and fixed at the blade-shaped part 32a.

[0063] In one embodiment, the guiding mating part 37 is configured as an inclined surface or an arc-shaped transition surface. As the guide wire 23 moves continuously along the introduction path 24, its direction of movement gradually changes. Through the curvature and inclination angle of the guiding mating part 37, it is ensured that the guide wire 23 can be smoothly guided and constrained by the guiding part 36 and the guiding mating part 37, and jamming or deviation is avoided. Specifically, the guiding mating part 37 is a cross-section that extends along the length direction of the introduction path 24, usually arc-shaped or approximately continuous circular arc, with a radius slightly larger than the outer diameter of the guide wire 23. The depth and width of the guiding mating part 37 are designed according to the outer diameter of the guide wire 23, providing sufficient space to accommodate the guide wire while constraining its radial movement, ensuring that the guide wire 23 can smoothly slide into the receiving groove 37a without being excessively squeezed during contact sliding.

[0064] like Figure 9As shown, to further improve the stability and reliability of the guide wire 23 being clamped and fixed at the blade-shaped portion 32a of the guide portion 36, a lateral limiting portion 32b is provided on the lifting clamp 32 on the side extending along the abutment surface 35 and close to the blade-shaped portion 32a. The lateral limiting portion 32b is provided on the side extending along the blade-shaped portion 32a and close to the observation unit 13. After the lifting clamp 32 is lifted, the lateral limiting portion 32b protrudes towards the base end of the insertion portion 3. During the lifting of the lifting clamp 32, to prevent accidental lateral movement of the guide wire 23, the lateral limiting portion 32b can provide timely physical restraint, effectively preventing the guide wire 23 from deviating and ensuring its stability and accurate positioning.

[0065] Furthermore, when the clamp 32 is in a wire-free state and is lifted, there is a unique contact between the clamp 32 and the support base 34. This unique contact is formed by the initial contact between the corresponding part of the support base 34 and the lateral limiting part 32b. At this time, the outer surface of the lateral limiting part 32b first contacts the corresponding part of the support base 34, while the abutment surface 35 remains suspended from the support base 34 and has no direct contact with it. This arrangement allows the clamp 32 to smoothly move along the guide path 24 during the lifting process of the guide wire 23. After the clamp 32 is lifted, the guide wire 23 can be clamped and fixed by the blade-shaped part 32a and the receiving groove 37a. After the clamp 32 lifts the guide wire 23, the distance between the corresponding position of the lateral limiting part 32b and the support base 34 is less than the diameter of the guide wire 23.

[0066] In one embodiment, as the guide wire 23 extends from the channel opening 211 of the instrument channel 21, the guide mating part 37 has a clearance part with a large radius of curvature, which is arranged in the rear region of the channel opening 211 along the insertion direction and smoothly transitions with the side edge of the support 34 to ensure that the support avoids interference with the guide wire 23 during insertion.

[0067] In one embodiment, the support base 34 and the head end 7 are integrally formed, which simplifies the manufacturing process and the integral structure is seamless, avoiding possible cracks at the connection and facilitating cleaning and disinfection.

[0068] Another embodiment of the present invention provides an endoscope having an endoscope lens end section as provided in any of the above embodiments of the present invention.

[0069] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An endoscope tip, disposed at the front end of the insertion part in the insertion direction, characterized in that, include: A side opening is provided at the end of the head; An instrument channel is provided within the insertion section; The channel opening is funnel-shaped and communicates with the instrument channel for guidewire delivery; The lifting clamp is disposed opposite to the channel opening and has an abutment surface for the guide wire to abut against; A guide section is provided on the abutment surface; Support base, used to support the lifting clamp, has a guiding mating part; During the lifting process, the guide part and the guide mating part work together to move the guide wire along the guide wire's guide path; After the clamp is lifted, the guide wire is fixed at the blade-shaped part of the guide section, and the angle between the clamping force exerted by the clamp on the guide wire and the direction of movement of the clamp is an acute angle.

2. The endoscope tip according to claim 1, characterized in that, One side of the guide portion has a protruding ridge, and the protruding ridge is provided with a blade-shaped portion that can press against the guide wire.

3. The endoscope tip according to claim 1, characterized in that, The guiding mating part has a receiving groove disposed opposite to the blade-shaped part. The cross-section of the receiving groove is arc-shaped, and the central angle corresponding to the arc is less than 180°.

4. The endoscope tip according to claim 1, characterized in that, The channel opening has a sidewall away from the side end opening, the guide has a predetermined area adjacent to the sidewall, and there is a smooth transition between the guide and the sidewall before the lifting clamp is lifted. The predetermined area is further away from the side end opening relative to the sidewall.

5. The endoscope tip according to claim 3, characterized in that, After the lifting clamp is lifted, the gap between the blade-shaped part and the receiving groove does not exceed the diameter of the guide wire.

6. The endoscope tip according to claim 1, characterized in that, The gap between the guide portion and the guide mating portion gradually decreases along the introduction direction of the introduction path.

7. The endoscope tip according to claim 1, characterized in that, A lateral limiting portion is provided along the extending direction of the abutment surface and on the side near the blade-shaped portion. After the lifting clamp is lifted, the lateral limiting portion protrudes on the lifting clamp toward the base end side of the insertion portion.

8. The endoscope tip according to claim 7, characterized in that, After the clamp is lifted, there is a unique contact between the clamp and the support base in the absence of a guide wire. This unique contact is the first contact between the lateral limiting part of the support base.

9. The endoscope tip according to claim 1, characterized in that, The support base and the head end are integrally formed.

10. An endoscope comprising the endoscope lens end as described in any one of claims 1 to 9.

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