An introducer tip, endoscope assembly, and delivery device

Abstract

The application is suitable for the technical field of endoscopes, and provides a guide-in tip, an endoscope assembly and an implantation device. The guide-in tip comprises: a main body having a receiving cavity, which is used for fixing an insertion part of an endoscope, and the main body has a transparent part distributed at least in a region corresponding to an optical device of the insertion part; one end of an elastic body is fixedly installed on the main body, and in the case that the elastic body is in a bending state, the free end of the elastic body can be limitedly matched with the distal end of a guide sheath along the axial direction of the main body; and a driving structure is movably arranged on the main body, and is used for being pushed by the insertion part to apply a driving force to the elastic body in the process of inserting the insertion part into the receiving cavity, and the driving force is used for driving the elastic body to switch from a natural state to a bending state. Through the guide-in tip provided by the application, the position information of the main body in the human body cavity can be obtained in real time, and in the process of inserting the insertion part into the main body, the guide sheath and the main body can be limited, so as to avoid damage to the optical device.

Description

Technical Field

[0001] This application relates to the field of endoscope technology, and in particular to an insertion tip, endoscope assembly, and insertion device. Background Technology

[0002] Endoscopes, as one of the important medical instruments in modern surgery, consist of an operating handle and an insertion section. The insertion section can be inserted into the human body through body cavities or surgical incisions. Through the camera module at the distal end of the insertion section, doctors can help determine the location of lesions and the tissue structure characteristics of the lesions. During use, due to the flexible nature of the insertion section, endoscopes are generally used in conjunction with rigid endoscopes. However, the applicant discovered during the development process that the existing endoscope insertion and use process is complicated and easily causes pressure on the insertion section, resulting in damage to the lens and other components. Summary of the Invention

[0003] The purpose of this application is to provide an implantation tip, endoscope assembly, and insertion device to solve the aforementioned technical problems in the prior art, mainly including the following:

[0004] A first aspect of this application provides an insertion tip for an endoscope, comprising: a body, a drive structure, and an elastomer, wherein:

[0005] The main body has a receiving cavity for fixing the insertion part of the insert endoscope, and the main body has a transparent part distributed at least in the area corresponding to the optical device of the insertion part;

[0006] One end of the elastomer is fixedly installed on the main body, and the elastomer is in a bent state. When the elastomer is in the bent state, along the axial direction of the main body, the free end of the elastomer can be limited and matched with the distal end of the guide sheath.

[0007] The driving structure is movably disposed on the main body and is located on the insertion path of the insertion part. It is used to apply a driving force to the elastomer by being pushed by the insertion part during the process of the insertion part being inserted into the receiving cavity. The driving force is used to drive the elastomer to switch from the natural state to the bent state.

[0008] To further improve the implementation of this application, the following configuration structure is specifically adopted: the driving structure includes a driving component and a pull rope;

[0009] The driving component is located in the receiving cavity, and the pull rope is disposed in the main body. One end of the pull rope is connected to the elastic body, and the other end is connected to the driving component. During the process of the insertion part being inserted into the receiving cavity, the driving component can pull the elastic body through the pull rope to switch the elastic body to the bending state.

[0010] To further improve the implementation of this application, the following configuration structure is adopted: the driving member is disposed on the insertion path of the insertion part in the receiving cavity, the pull rope extends along the axial direction of the main body, and during the process of the insertion part being inserted into the receiving cavity, the driving member is pushed and moved by the insertion part to drive the pull rope.

[0011] To further improve the implementation of this application, the following configuration structure is adopted: the driving member has a positioning groove on the side facing the insertion part, and the edge of the positioning groove is provided with a first guide surface. The first guide surface is used to guide the distal end of the insertion part to slide into the positioning groove and achieve positioning and cooperation with the positioning groove.

[0012] To further improve the implementation of this application, the following structure is specifically adopted: a receiving space is provided on the side wall of the main body, and the elastic body is installed within the receiving space; wherein:

[0013] A soft rubber portion is provided on the side wall of the main body, and the soft rubber portion is correspondingly disposed with the receiving space. When the elastomer is in the bent state, the free end of the elastomer bends to abut against the soft rubber portion to press against the soft rubber portion and form a stop portion that limits the distal end of the guide sheath; or,

[0014] The side wall of the main body is provided with a clearance hole, which is correspondingly provided with the receiving space. When the elastic body is in a bent state, the free end of the elastic body can extend out of the clearance hole and cooperate with the distal end of the guide sheath for limiting.

[0015] To further improve the implementation of this application, the following structure is specifically adopted: a second guide surface is provided on the inner wall of the receiving space adjacent to the outer peripheral surface of the main body, for guiding the free end of the elastomer to slide into the soft rubber part along the second guide surface.

[0016] To further improve the implementation of this application, the following structure is specifically adopted: at least one interference protrusion is provided on the cavity wall of the receiving cavity, and the interference protrusion is arranged on the moving path of the insertion part; the fixed end of the elastomer in the receiving space is correspondingly distributed radially between the two interference protrusions along the main body.

[0017] To further improve the implementation of this application, the following structure is specifically adopted: the side wall of the main body is provided with a sliding groove and a receiving groove;

[0018] The drive component is placed in the slide groove, and the pull rope is accommodated in the receiving groove; the slide groove is connected to the receiving cavity, and the slide groove, the receiving groove, and the receiving space are connected.

[0019] A second aspect of this application provides an endoscope assembly including an endoscope and the aforementioned insertion tip, wherein the distal end of the insertion portion of the endoscope is connected to the proximal end of the insertion tip.

[0020] A third aspect of this application provides an insertion device, including a guide sheath and the aforementioned endoscope assembly, wherein the insertion portion of the endoscope is inserted into and engages with the guide sheath.

[0021] This application has at least the following technical advantages over the prior art:

[0022] The inlet head provided in this application includes a main body, a driving structure, and an elastomer. The main body has a receiving cavity, and the insertion part is fixedly inserted into the receiving cavity. The optical devices distributed in the insertion part of the main body are set as transparent parts in the corresponding areas. The optical devices illuminate the inside of the human body cavity, and acquire image information of the inside of the human body cavity and the position information of the main body in the human body cavity in real time. This allows the operator to smoothly and efficiently move the main body in the human body cavity under the visualization of image information and position information, avoiding damage to the inner wall of the human body cavity and stress response of the patient caused by incorrect direction of the main body's movement.

[0023] Secondly, during the assembly of the endoscope's insertion part and guide tip, the insertion part can be inserted into the receiving cavity of the main body. The insertion part pushes the drive structure to move axially along the main body, applying a driving force to the elastomer. This driving force can be used to drive the elastomer to switch from its natural state to a bent state. The free end of the elastomer is axially limited and engaged with the distal end of the guide sheath. Thus, as the guide tip is inserted into the human cavity along with the insertion part, the main body, after encountering resistance from the inner wall of the human cavity, comes into contact with the guide sheath. The guide sheath provides a force opposite to the resistance to the main body, reliably supporting it and allowing the main body to remain in its current position. This improves the smoothness and stability of the insertion action, while avoiding damage to the optical components caused by squeezing the insertion part located in the receiving cavity of the main body.

[0024] Furthermore, after the insertion tip is successfully inserted into the human body, the insertion part can be grasped and withdrawn from the body cavity. During withdrawal, since the main body of the insertion tip is in contact with the distal end of the guide sheath, the insertion part can move relative to the main body, thereby removing the driving force on the elastic body. The elastic body can then return to its natural state, releasing the limiting fit between the main body and the distal end of the guide sheath. Thus, the insertion tip, which is attached to the insertion part, can smoothly withdraw from the guide sheath along with the insertion part, while the guide sheath remains in the body cavity to establish a surgical channel. Therefore, the insertion tip provided in this application enables a simple and quick withdrawal operation, optimizing the surgical procedure. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram illustrating the cooperation of the endoscope insertion part, guide sheath, drive structure, elastomer, and body in some embodiments of this application. Figure 1 ;

[0027] Figure 2 yes Figure 1 Enlarged view of section A;

[0028] Figure 3 This is a top view showing the mating of the endoscope insertion part, guide sheath, drive structure, elastomer and body in some embodiments of this application;

[0029] Figure 4 yes Figure 3 A cross-sectional view along the BB direction;

[0030] Figure 5 yes Figure 4 Enlarged view of section C;

[0031] Figure 6 This is a schematic diagram illustrating the cooperation of the endoscope insertion part, guide sheath, drive structure, elastomer, and body in some embodiments of this application. Figure 1 (Sectional cut of the main body and guiding sheath);

[0032] Figure 7 yes Figure 6 Enlarged view of section D in the middle;

[0033] Figure 8 This is a schematic diagram showing the cooperation of the guide sheath, drive structure, elastomer and body in some embodiments of this application (section of the body and guide sheath);

[0034] Figure 9 yes Figure 8 Enlarged view of section E in the middle;

[0035] Figure 10 This application describes the axial sectioning of the guide sheath and body in some embodiments of the application. Figure 1 ;

[0036] Figure 11 yes Figure 10 Enlarged view of section F in the middle;

[0037] Figure 12 This application describes the axial sectioning of the guide sheath and body in some embodiments of the application. Figure 2;

[0038] Figure 13 yes Figure 12 Enlarged view of section G in the middle;

[0039] Figure 14 This is a schematic diagram illustrating the cooperation of the endoscope insertion part, guide sheath, drive structure, elastomer, and body in some embodiments of this application. Figure 1 ;

[0040] Figure 15 yes Figure 14 Enlarged view of H in the middle;

[0041] Figure 16 This is a schematic diagram illustrating the cooperation of the endoscope insertion part, guide sheath, drive structure, elastomer, and body in some embodiments of this application. Figure 2 (Sectional cut of the main body and guiding sheath);

[0042] Figure 17 yes Figure 16 Enlarged view of section I;

[0043] Figure 18 This is a schematic diagram illustrating the cooperation of the endoscope insertion part, guide sheath, drive structure, elastomer, and body in some embodiments of this application. Figure 2 (Sectional cut of the main body and guiding sheath);

[0044] Figure 19 yes Figure 18 Enlarged view of the middle J section.

[0045] In the picture:

[0046] 10-Main body; 11-Receiving cavity; 111-Interference fit protrusion; 12-Receiving space; 121-Second guide surface; 13-Soft rubber part; 14-Stop part; 15-Slide groove; 16-Receiving groove;

[0047] 20-Drive structure; 21-Drive component; 211-Positioning groove; 212-First guide surface; 22-Pull rope;

[0048] 30 - Elastomer;

[0049] 40 - Insertion part; 41 - Optical components;

[0050] 50 - Guide sheath. Detailed Implementation

[0051] The following description provides many different embodiments or examples for implementing various features of this application. The elements and arrangements described in the specific examples below are only for concise expression of this application and are merely examples, not intended to limit this application.

[0052] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to represent selected embodiments of this application.

[0053] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," "third," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0054] In this application, unless otherwise expressly specified and limited, "above or below" a first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" a first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0055] In addition, in this application, "proximal" and "distal" refer to the near and far positions of the insertion tip, endoscope assembly, and placement device relative to the surgeon in the usage environment, so as to facilitate the description of the positional relationship between the components and to facilitate understanding. For the same component, "proximal" and "distal" are relative positional relationships of the component, not absolute ones. Therefore, they should be understood from the perspective of implementing the principles of this application, and should not deviate from the essence of this application.

[0056] As one of the important medical instruments in modern surgery, the endoscope includes an operating handle and an insertion part. The operating handle is equipped with a lever and a wheel for fixing the traction rope. Operating the lever can drive the wheel to rotate, which in turn causes the traction rope to cause the distal end of the insertion part to bend in a specific direction. The insertion part can be inserted into the human body through a body cavity or surgical incision. Through the camera module at the distal end of the insertion part, doctors can help determine the location of lesions in the patient's body and the tissue structure characteristics of the lesion location. During the insertion of the endoscope into the body cavity, due to the flexible nature of the endoscope's insertion section, it is generally used in conjunction with a rigid endoscope. For example, in transurethral laser kidney stone surgery, the typical procedure is as follows: 1. First, the rigid endoscope is inserted into the bladder and ureter through the urethra; 2. Then, a guidewire is passed through the working channel of the rigid endoscope to the renal pelvis; 3. The rigid endoscope is withdrawn, leaving only the guidewire in the urinary tract; 4. Then, a ureteral guiding sheath and a sheath core located within the guiding sheath are inserted through the guidewire; 5. The sheath core within the ureteral guiding sheath is withdrawn; 6. The endoscope insertion section is then inserted through the ureteral guiding sheath, and the inserted instruments are delivered into the body cavity through the instrument channel within the insertion section to perform functions such as fiber optic lithotripsy, cooling and flushing, and stone retrieval.

[0057] The inventors discovered in their research that the existing endoscopic insertion process is complex, especially when inserting the ureteral guiding sheath and the sheath core inside the guiding sheath via a guidewire. The operator performs the insertion without a field of vision. Under blind insertion conditions, the operator can only apply the insertion driving force based on experience, which can easily cause damage to the inner wall of the body cavity at narrow or bent points due to excessive insertion driving force, increasing the surgical risk. In addition, the existing endoscopic insertion process is complex and can easily cause compression of the endoscopic insertion part, resulting in damage to the lens and other devices.

[0058] In view of this, this application provides an insertion tip, endoscope assembly and insertion device that can reduce the risk of damage to human body cavities during insertion, the specific structure of which is described in the following embodiments.

[0059] The first aspect of this application provides an insertion tip for an endoscope, such as... Figures 1-19 As shown, it includes: a main body 10, a driving structure 20, and an elastic body 30, wherein:

[0060] The main body 10 has a receiving cavity 11 for fixing the insertion portion 40 of an endoscope, and the main body 10 has transparent portions distributed in areas corresponding to the optical components 41 of the insertion portion 40. For example, the main body 10 is generally cylindrical and has a hollow structure. The hollow structure of the main body 10 includes the receiving cavity 11 and an instrument channel. The receiving cavity 11 is located at the proximal end of the main body 10. The insertion portion 40 of the endoscope can be pre-inserted into the receiving cavity 11, and the insertion portion 40 is fixedly inserted into the receiving cavity 11, facilitating simultaneous movement of the main body 10 and the insertion portion 40. The insertion part 40 is equipped with a camera component and a light source component at its distal end. The main body 10 is set as a transparent part in the area corresponding to the field of view of the camera component and the light source component. After the insertion part 40 is inserted into the receiving cavity 11 of the main body 10, the light source component illuminates the transparent part of the main body 10. The camera component can acquire information about the human cavity in the illuminated area and transmit the image information of the human cavity in the illuminated area of ​​the transparent part of the main body 10 to the operator in real time. The operator can perform a visual insertion operation under this image information. If the main body 10 is in a narrow or bent part of the human cavity, the driving force for insertion can be reduced, the damage to the inner wall of the human cavity can be reduced, the surgical risk can be reduced, and the position information of the main body 10 in the human cavity can be understood in time, which can assist the operator in placing the main body 10 into the preset position in the human cavity.

[0061] It should be noted that the optical device 41 in this application may include a camera assembly, a light source assembly, etc., wherein the camera assembly is a camera, etc., and the light source assembly is an LED, etc., without limitation.

[0062] One end of the elastomer 30 is fixedly installed on the main body 10, and the elastomer 30 is in a bent state. When the elastomer 30 is in a bent state, along the axial direction of the main body 10, the free end of the elastomer 30 can be matched with the distal end of the guide sheath 50 for limiting.

[0063] For example, the elastic body 30 in this application can switch from a free state to a bent state under the action of external force. If the elastic body 30 is a spring sheet, one end of the spring sheet is fixed in the main body 10, and the other end can move within the main body 10. Under the action of tension, the free end of the spring sheet tilts up, causing the entire spring sheet to switch to a bent state. The elastic body 30 can also be a ball spring, with one end fixed in the main body 10 and the other end being a free end on which a ball is installed. Similarly, under the action of tension, the free end of the spring tilts up, causing the entire spring to switch to a bent state. The elastic body 30 in this application can also be other components, which are not limited here. Preferably, the elastic body 30 in this application is a spring sheet. The elastomer 30 includes a free end and a fixed end. One end of the elastomer 30 is fixedly installed in the main body 10. For example, a receiving space 12 for accommodating the elastomer 30 is provided on the side wall of the main body 10. The fixed end of the elastomer 30 is partially fixedly connected to the receiving space 12, and the free end of the elastomer 30 is movably connected to the receiving space 12. The free end of the elastomer 30 can bend relative to the fixed end. When the elastomer 30 is subjected to an external force, the free end of the elastomer 30 bends, that is, the elastomer 30 switches from its natural state to a bent state. The free end of the elastomer 30 abuts against the distal end of the guide sheath 50, restricting the movement of the guide sheath 50 along the axial direction of the main body 10. For example, during the process of the main body 10 entering the human body cavity, resistance will be generated when the main body 10 comes into contact with the human body cavity, which may cause the main body 10 to move backward. Since the free end of the elastomer 30 abuts against the distal end of the guide sheath 50, the guide sheath 50 will provide a supporting force to the main body 10. This supporting force is opposite to the direction of the resistance. The supporting force will offset at least part of the resistance, keeping the main body 10 in the current position and preventing the main body 10 from moving backward when it is subjected to resistance, squeezing the distal end of the insertion part 40, and causing damage to the optical device 41.

[0064] The drive structure 20 is movably disposed on the main body 10 and is located on the insertion path of the insertion part 40. During the process of the insertion part 40 being inserted into the receiving cavity 11, the drive structure 20 is pushed by the insertion part 40 and applies a driving force to the elastic body 30. The driving force is used to drive the elastic body 30 to switch from a natural state to a bent state.

[0065] For example, this application also includes a drive structure 20, which is also disposed in the main body 10 and is fixedly connected to the elastomer 30. Part of the drive structure 20 is located in the receiving cavity 11, and the rest is slidably connected to the main body 10. During the insertion of the insertion part 40 into the receiving cavity 11, part of the insertion part 40 pushes against the drive structure 20 and moves along the receiving cavity 11, thereby driving the elastomer 30, causing the elastomer 30 to switch from a free state to a bent state in the receiving space 12, so that the free end of the elastomer 30 is limited to the distal end of the guide sheath 50, thereby restricting the axial movement of the guide sheath 50 and the main body 10. For example, during a specific surgical procedure, when the main body 10 is inserted into the human cavity, it will be squeezed by the cavity wall. This squeezing action causes the main body 10 to tend to move relative to the guide sheath 50 along the axial direction. At this time, the elastic body 30 is in a bent state, and the free end of the elastic body 30 abuts against the distal end of the guide sheath 50. The guide sheath 50 provides support for the main body 10, so that the elastic body 30 remains in a bent state. In addition, the guide sheath 50 can also reduce the driving force generated by the insertion part 40 through the pushing drive structure, thereby reducing the force on the distal end of the insertion part 40, achieving the technical effect of protecting the distal structure of the insertion part 40, especially the optical device.

[0066] Therefore, the inlet head provided in this application includes a main body 10, a driving structure 20, and an elastomer 30. The main body 10 has a receiving cavity 11, and the insertion part 40 is fixedly inserted into the receiving cavity 11. The optical device 41 distributed in the insertion part 40 of the main body 10 is set as a transparent part in the corresponding area. The optical device 41 illuminates the inside of the human cavity and acquires images, thereby obtaining real-time image information of the inside of the human cavity and the position information of the main body 10 in the human cavity. This allows the operator to operate the main body 10 smoothly and efficiently in the human cavity under the visualization of the image information and position information, avoiding damage to the inner wall of the human cavity and the patient's stress response caused by the incorrect direction of the main body 10's movement.

[0067] Secondly, during the assembly of the endoscope's insertion part 40 and the guide tip, the insertion part 40 can be inserted into the receiving cavity 11 of the main body 10. The insertion part 40 pushes the drive structure 20 to move axially along the main body 10, thereby applying a driving force to the elastic body 30. This driving force can be used to drive the elastic body 30 to switch from a natural state to a bent state. The free end of the elastic body 30 is axially limited and engaged with the distal end of the guide sheath 50. Thus, during the insertion of the guide tip into the human cavity along with the insertion part 40, the main body 10, after encountering resistance from the inner wall of the human cavity, abuts against the guide sheath 50. The guide sheath 50 provides a force opposite to the resistance to the main body 10, reliably supporting the main body 10, allowing the main body 10 to remain in its current position. This improves the smoothness and stability of the insertion action, while avoiding damage to the optical device 41 caused by squeezing the insertion part 40 located in the receiving cavity 11 of the main body 10.

[0068] Furthermore, after the insertion tip is successfully inserted into the human body, the insertion part 40 can be grasped and withdrawn from the human cavity. During withdrawal, since the main body 10 of the insertion tip is in contact with the distal end 50 of the guide sheath, the insertion part 40 can move relative to the main body 10, thereby removing the driving force on the elastic body 30. The elastic body 30 can then return to its natural state, releasing the limiting fit between the main body 10 and the distal end of the guide sheath 50. Thus, the insertion tip, which is connected to the insertion part 40, can smoothly withdraw from the guide sheath 50 along with the insertion part 40, while the guide sheath 50 remains in the human cavity to establish a surgical channel. Therefore, the insertion tip provided in this application enables a simple and quick withdrawal operation, optimizing the surgical procedure.

[0069] According to some alternative embodiments, the drive structure 20 includes a drive element 21 and a pull rope 22;

[0070] The drive member 21 is located in the receiving cavity 11. The pull rope 22 is provided on the main body 10. One end of the pull rope 22 is connected to the elastic body 30, and the other end is connected to the drive member 21. During the process of inserting the insertion part 40 into the receiving cavity 11, the drive member 21 can pull the elastic body 30 through the pull rope 22 to make the elastic body 30 switch to a bent state.

[0071] In the above embodiment, part of the driving member 21 is located within the receiving cavity 11, and the remaining part is located in the groove 15 of the cavity wall of the receiving cavity 11, and this part can slide along the groove 15. The driving member 21 is symmetrically arranged along the axis of the main body 10, and correspondingly, the pull rope 22 is also symmetrically arranged along the axis of the main body 10. One end of the driving member 21 and the pull rope 22 are fixedly connected, and the other end of the pull rope 22 is fixedly connected to the elastic body 30. During the process of inserting the insertion part 40 into the receiving cavity 11, the insertion part 40 pushes against the driving member 21, and the driving member 21 drives the pull rope 22 to move towards the far end of the main body 10, thereby causing the spring to switch from a free state to a bent state, and the free end tilts up to form a stop part 14 on the outer wall of the main body 10. In this embodiment, the pull rope 22 is fixedly connected to the elastic body 30, so by pushing the driving member 41, the pull rope 22 can be used to pull the elastic body 30 to bend, which is convenient and efficient.

[0072] In some optional embodiments, the drive structure 20 is a lifting member that is radially movable along the main body 10. During the insertion of the insertion part 40 into the receiving cavity 11, the insertion part 40 can cooperate with the lifting member, causing the lifting member to drive the elastic body 30 to switch from a natural state to a bent state. For example, the outer wall of the insertion part 40 is provided with a protrusion, and the bottom of the lifting member is provided with a groove. During the insertion of the insertion part 40 into the receiving cavity 11, the protrusion and the groove cooperate to limit the movement, and the lifting member moves and rises radially. Then, the insertion part 40 continues to move towards the distal end of the main body 10 in the receiving cavity 11, and the lifting member drives the elastic body 30 to switch from a free state to an outwardly bent state, so that the outer wall of the main body 10 forms a stop part 14, completing the axial limitation of the main body 10 and the guide sheath 50.

[0073] According to some alternative embodiments, the drive member 21 is disposed on the insertion path of the insertion part 40 in the receiving cavity 11, and the drive member 21 is movable along the insertion path so that the insertion part 40 can push against the drive member 21 during the insertion of the insertion part 40 into the receiving cavity 11.

[0074] The pull rope 22 extends along the axial direction of the main body 10. During the process of the insertion part 40 being inserted into the receiving cavity 11, the driving member 21 is pushed and moved by the insertion part 40, thereby driving the pull rope 22.

[0075] The pull rope 22 is arranged along the axial direction of the main body 10, that is, the extension direction of the pull rope 22 is parallel to the insertion path. This arrangement of the pull rope 22 in the main body 10 is more reasonable. When the insertion part 40 pushes the driving member 21, the moving direction of the driving member 21 and the pull rope 22 is consistent with the insertion direction of the insertion part 40. This ensures that the driving force generated by the insertion part 40 pushing the driving member 21 is consistent with the insertion path and is not diverted to other directions. This allows the elastic body 30 to quickly switch to the bending state. In other words, the axial thrust of the insertion part 40 during insertion can drive the elastic body 30 to switch to the bending state. This results in high driving efficiency and prevents damage to the distal end of the insertion part 40.

[0076] According to some alternative embodiments, the driving member 21 has a positioning groove 211 on the side facing the insertion part 40, and a first guide surface 212 is provided on the edge of the positioning groove 211. The first guide surface 212 is used to guide the distal end of the insertion part 40 to slide into the positioning groove 211 and achieve positioning engagement with the positioning groove 211.

[0077] In the above embodiment, during the insertion of the insertion part 40 into the receiving cavity 11, the distal end of the insertion part 40 smoothly slides into the positioning groove 211 along the first guide surface 212 and engages with the positioning groove 211 for positioning and cooperation. This allows for quick and accurate alignment with the driving member 21, preventing the insertion part 40 from slipping or misaligning when pushing the driving member 21. This keeps the driving member 21 on the insertion path and ensures that the insertion part 40 can quickly push the driving member 21 to move.

[0078] According to some optional embodiments, a receiving space 12 is provided on the side wall of the main body 10, and the elastic body 30 is installed in the receiving space 12. For example, the receiving space 12 is groove-shaped, located between the outer wall of the main body 10 and the cavity wall of the receiving channel 11. The fixed end of the elastic body 30 is fixedly installed in the receiving space 12, and the free end is movably installed in the receiving space 12. Wherein:

[0079] A soft rubber part 13 is provided on the side wall of the main body 10. The soft rubber part 13 is provided in correspondence with the receiving space 12. When the elastic body 30 is in a bent state, the free end of the elastic body 30 bends to a position that abuts against the soft rubber part 13, so as to press against the soft rubber part 13 to form a stop part 14 that is limited and cooperates with the distal end of the guide sheath 50.

[0080] For example, the soft rubber part 13 is pleated and located above the receiving space 12. The soft rubber part 13 makes the receiving space 12 a closed space, and the elastic member 30 will not protrude from the receiving space 12. The soft rubber part 13 can be deformed. During the process of inserting the insertion part 40 into the receiving cavity 11, the insertion part 40 pushes against the driving member 21, thereby driving the pull rope 22 to move along the distal end of the main body 10. The pull rope 22 pulls the elastic body 30, causing the elastic body 30 to switch from a free state to a bent state. The free end of the elastic body 30 bends and abuts against the inner wall of the soft rubber part 13, causing the soft rubber part 13 to switch from a flat state to a convex state. The convex state forms a stop part 14. The distal end of the guide sheath 50 abuts against one side of the stop part 14. The main body 10 uses the guide sheath 50 as support to smoothly insert into the human body cavity. In addition, when the stop portion 14 abuts against the distal end of the guide sheath 50, it can share the force of the pull rope 22 pulling the elastic body 30. That is, part of the force required for the elastic body 30 to bend is borne by the guide sheath 50, which can reduce the driving force applied by the insertion portion 40 to the driving member 21 and reduce the risk of damage to the distal end of the insertion portion 40. For example, after the main body 10 is inserted into the human body cavity, the insertion portion 40 will be withdrawn proximally, and the elastic body 30 will switch from a bent state to a free state. Specifically, the free end of the elastic body 30 slides along the inner wall of the soft rubber portion 13 to a free state, and the soft rubber portion 13 switches from a convex shape to a flat shape, releasing the restriction between the main body 10 and the guide sheath 50. Since the insertion portion 40 is fixedly inserted into the receiving cavity 11 of the main body 10, the insertion portion 40 can drive the main body 10 out of the human body cavity through the guide sheath 50, so that the main body 10 can be quickly and conveniently withdrawn from the human body cavity, improving the withdrawal efficiency of the main body 10.

[0081] For example, in this application, the elastomer 30 is preferably a spring sheet, which can serve as the driving structure of the stop part 14. When the insertion part 40 pushes the driving member 21, the spring sheet is pulled by the pull rope 22, and the free end of the spring sheet is raised and abuts against the inner wall of the soft rubber part 13, driving the soft rubber part 13 to switch from a flat state to a convex state, thereby forming the stop part 14; when the insertion part 40 moves towards the proximal end, since the spring sheet itself has a rebound characteristic, the pull rope 22 does not need to pull the spring sheet. Under the action of the rebound force, the spring sheet switches from a bent state to a free state, driving the soft rubber part 13 to switch from a convex state to a platform state, releasing the limiting cooperation between the guide sheath 50 and the main body 10, so that the main body 10 and the insertion part 40 can smoothly exit the human body cavity along the guide sheath 50.

[0082] In some alternative embodiments, the soft rubber part may be an outer skin structure connected to the outer wall of the body 10; the soft rubber part may also be a side wall of the body 10 formed by two-color injection molding.

[0083] In some optional embodiments, the side wall of the main body 10 is provided with a clearance hole, which is correspondingly provided with the receiving space 12. When the elastic body 30 is in a bent state, the free end of the elastic body 30 can extend out of the clearance hole and cooperate with the distal end of the guide sheath 50 for limiting.

[0084] In the above embodiment, an avoidance hole is provided on the side wall of the main body 10. The avoidance hole is connected to the receiving space 12. When the elastic body 30 is bent, the free end portion can extend out of the avoidance hole. The portion extending out of the avoidance hole forms a stop portion 14. The stop portion 14 abuts against the distal end of the guide sheath 50, restricting the axial movement of the guide sheath 50.

[0085] According to some alternative embodiments, a second guide surface 121 is provided on the inner wall of the receiving space 12 adjacent to the outer peripheral surface of the main body 10, for guiding the free end of the elastomer 30 to slide into the soft rubber portion 13 along the second guide surface 121.

[0086] In the above embodiment, the second guide surface 121 is an inclined surface, and the inclination direction of the inclined surface is consistent with the bending path of the elastic body 30. When the elastic body 30 is subjected to tension, the free end slowly slides into the soft rubber part 13 along the inclined surface, thus preventing the free end of the elastic body 30 from breaking. By forming a recess in the receiving space 12 through the second guide surface 121, on the one hand, the free end of the elastic body 30 can slowly bend and slide into the soft rubber part 13, and abut against the inner wall of the soft rubber part 13, so that the soft rubber part 13 forms a stop; on the other hand, when the elastic body 30 switches from the bent state to the free state, the elastic body 30 can also slowly slide into the receiving space 12 along the second guide surface 121, thus preventing the elastic body 30 from breaking when it slides into the receiving space 12 quickly.

[0087] According to some optional embodiments, at least one interference-fit protrusion 111 is provided on the cavity wall of the receiving cavity 11. In this application, three interference-fit protrusions 111 are provided, and the three interference-fit protrusions 111 are spaced apart along the axial direction of the main body 10. The interference-fit protrusions 111 are arranged on the moving path of the insertion part 40. The interference-fit protrusions 111 extend circumferentially along the receiving cavity 11. The interference-fit protrusions 111 can be closed annular protrusions formed circumferentially along the receiving cavity 11, or they can be multiple strip-shaped protrusions distributed circumferentially along the receiving cavity 11. An interference fit protrusion 111 is arranged on the cavity wall of the receiving cavity 11. During the insertion of the insertion part 40 into the receiving cavity 11, the interference fit between the insertion part 40 and the cavity wall of the receiving cavity 11 reduces the contact area between the insertion part 40 and the cavity wall of the receiving cavity 11, avoids the distal end of the insertion part 40 being squeezed, and after the main body 10 and the insertion part 40 have completed guiding the guide sheath 50, the insertion part 40 moves a large distance relative to the main body 10. The insertion part 40 may separate from some of the interference fit protrusions 111. However, the probability of the insertion part 40 separating from all the interference fit protrusions 111 at the same time is small. This can avoid the situation where the insertion part 40 separates directly from the main body 10 and cannot pull the main body 10 out of the guide sheath 50 together.

[0088] The fixed end of the elastic body 30 in the receiving space 12 is distributed radially between the two interference protrusions 111. In this way, during the process of the elastic body 30 switching from a free state to a bent state, the part where the fixed end of the elastic body 30 is connected to the receiving space 12 is in a state of being in the air. At this time, this part can deform when subjected to the bending force of the elastic body 30, thus preventing the elastic body 30 from breaking.

[0089] According to some alternative embodiments, the sidewall of the main body 10 is provided with a sliding groove 15 and a receiving groove 16;

[0090] The drive component 21 is partially placed in the slide groove 15, and the pull rope 22 is accommodated in the receiving groove 16; the slide groove 15 is connected to the receiving cavity 11, and the slide groove 15, the receiving groove 16 and the receiving space 12 are connected.

[0091] In the above embodiment, part of the driving member 21 is located in the receiving cavity 11, and another part is located in the slide groove 15. The slide groove 15 is connected to the receiving cavity 11, and the driving member 21 can slide along the slide groove 15 when it is subjected to external force. The pull rope 22 is disposed in the receiving groove 16, and when the driving member 21 pulls the pull rope 22 or the elastic body 30 pulls the pull rope 22, the pull rope 22 can slide in the receiving groove 16, thus limiting the swing range of the pull rope 22.

[0092] A second aspect of this application provides an endoscope assembly including an endoscope and the aforementioned insertion tip, wherein the distal end of the insertion portion 40 of the endoscope can be connected to the proximal end of the insertion tip.

[0093] A third aspect of this application provides an insertion device, including a guide sheath and the aforementioned endoscope assembly, wherein the insertion portion of the endoscope can be inserted and engaged with the guide sheath.

[0094] The endoscope used in this embodiment can be a bronchoscope, pyeloscope, esophagoscope, gastroscope, colonoscope, otoscope, rhinoscope, oral endoscope, laryngoscope, colposcope, laparoscope, arthroscope, etc. This embodiment does not impose specific limitations on the type of endoscope.

[0095] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0096] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An inlet tip for use with an endoscope, characterized in that, include: The main body (10), the driving structure (20), and the elastomer (30) are as follows: The main body (10) has a receiving cavity (11) for fixing the insertion part (40) of the insert endoscope, and the main body (10) has a transparent part distributed in the area corresponding to the optical device (41) of the insertion part (40); One end of the elastic body (30) is fixedly installed on the main body (10), and the elastic body (30) is in a bent state. When the elastic body (30) is in the bent state, along the axial direction of the main body (10), the free end of the elastic body (30) can be limited and matched with the distal end of the guide sheath (50). The drive structure (20) is movably disposed on the main body (10) and is located on the insertion path of the insertion part (40). During the process of the insertion part (40) being inserted into the receiving cavity (11), the drive structure (20) is pushed by the insertion part (40) and applies a driving force to the elastomer (30). The driving force is used to drive the elastomer (30) to switch from the natural state to the bent state.

2. The inlet head as described in claim 1, characterized in that, The drive structure (20) includes a drive component (21) and a pull rope (22); The drive member (21) is partially located in the receiving cavity (11), and the pull rope (22) is disposed on the main body (10). One end of the pull rope (22) is connected to the elastic body (30), and the other end is connected to the drive member (21). During the process of the insertion part (40) being inserted into the receiving cavity (11), the drive member (21) can pull the elastic body (30) through the pull rope (22) to make the elastic body (30) switch to the bending state.

3. The inlet head as described in claim 2, characterized in that, The driving member (21) is disposed on the insertion path of the insertion part (40) in the receiving cavity (11). The pull rope (22) extends along the axial direction of the main body (10). During the process of the insertion part (40) being inserted into the receiving cavity (11), the driving member (21) is pushed and moved by the insertion part (40) to drive the pull rope (22).

4. The inlet head as described in claim 2 or 3, characterized in that, The driving member (21) has a positioning groove (211) on the side facing the insertion part (40). The edge of the positioning groove (211) is provided with a first guide surface (212). The first guide surface (212) is used to guide the distal end of the insertion part (40) to slide into the positioning groove (211) and achieve positioning cooperation with the positioning groove (211).

5. The inlet head as described in claim 1, characterized in that, The side wall of the main body (10) is provided with a receiving space (12), and the elastic body (30) is installed in the receiving space (12); wherein: A soft rubber portion (13) is provided on the side wall of the main body (10). The soft rubber portion (13) is correspondingly provided with the receiving space (12). When the elastic body (30) is in the bent state, the free end of the elastic body (30) bends to abut against the soft rubber portion (13) to press against the soft rubber portion (13) and form a stop portion (14) that limits and cooperates with the distal end of the guide sheath (50); or, The side wall of the main body (10) is provided with a clearance hole, which is correspondingly provided with the receiving space (12). When the elastic body (30) is in a bent state, the free end of the elastic body (30) can extend out of the clearance hole and cooperate with the distal end of the guide sheath (50).

6. The inlet head as described in claim 5, characterized in that, The receiving space (12) has a second guide surface (121) on the inner wall adjacent to the outer peripheral surface of the main body (10) for guiding the free end of the elastomer (30) to slide into the soft rubber part (13) along the second guide surface (121).

7. The inlet head as described in claim 5, characterized in that, At least one interference protrusion (111) is provided on the cavity wall of the receiving cavity (11), and the interference protrusion (111) is arranged on the moving path of the insertion part (40); the fixed end of the elastomer (30) in the receiving space (12) is distributed radially between the two interference protrusions (111) along the main body (10).

8. The inlet head as described in claim 2, characterized in that, The main body (10) is provided with a sliding groove (15) and a receiving groove (16) on its side wall; The drive unit (21) is partially placed in the slide groove (15), and the pull rope (22) is accommodated in the receiving groove (16); the slide groove (15) is connected to the receiving cavity (11).

9. An endoscope assembly, characterized in that, Includes an endoscope and an insertion tip as described in any one of claims 1-8, wherein the distal end of the insertion portion (40) of the endoscope may be connected to the proximal end of the insertion tip.

10. An insertion device, characterized in that, Includes a guide sheath (50) and an endoscope assembly as claimed in claim 9, wherein the insertion portion (40) of the endoscope is insertable into the guide sheath (50).

Images