Endoscope elevator, endoscope head and duodenoscope system

Abstract

The present invention discloses an endoscope lifting device, an endoscope head end, and a duodenoscope system. The bottom of the endoscope lifting device is connected to an instrument channel and is provided with a hinged portion for hinged connection with the endoscope head end seat; the top of the endoscope lifting device is provided with a positioning groove adapted to the positioned part; the side of the endoscope lifting device is provided with a shearing edge and a guide surface, and the guide surface is located between the positioning groove and the shearing edge; during the lifting process of the endoscope lifting device, the shearing edge can move along the inner side surface of the head end seat to guide the positioned part in a first deflected extended state to the guide surface, the guide surface can guide the positioned part into the positioning groove, and the positioning groove can cooperate with the abutting fixing part to clamp and fix the positioned part, so as to prevent the positioned part from falling out of the nipple and moving into the nipple, thereby ensuring the smooth progress of the operation.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to an endoscope forceps elevator, an endoscope head end and a duodenoscope system. Background Art

[0002] Cancer is a general term for a wide range of malignant tumors. Cancer cells are characterized by their uncontrolled and relentless growth, resulting in a significant consumption of nutrients in the patient's body. my country is a major country with a high incidence of gastrointestinal diseases and has long suffered from a low detection rate and high mortality rate. Currently, the most internationally recognized effective way to combat cancer is early detection, early diagnosis, and early treatment. Early cancer diagnosis is a diagnostic and treatment method specifically designed for patients with early-stage cancer. Endoscopic diagnosis is the most representative method for early diagnosis of gastrointestinal cancer. Its advantage is that it allows for simultaneous observation and photography, making it widely used clinically.

[0003] Duodenoscopy refers to a method of duodenoscope examination using a duodenoscope. It can be used to diagnose diseases of the duodenum, liver, gallbladder or pancreas, and can also be used for auxiliary treatment of the digestive system. When using a duodenoscope to treat the digestive system or pancreaticobiliary system, in addition to using an endoscope for diagnostic imaging of the digestive tract, bile duct or pancreatic duct, there are also treatments such as recovering gallstones in the common bile duct using balloons or manipulation instruments.

[0004] ERCP stands for endoscopic retrograde cholangiopancreatography. During ERCP, a duodenoscope is inserted into the descending duodenum to locate the duodenal papilla. A catheter is then inserted through the instrument channel to the papilla opening. After contrast agent is injected, an X-ray is taken to visualize the pancreatic and bile ducts. The ducts are then opened and stones are retrieved.

[0005] When the treatment instrument needs to be replaced during the ERCP procedure, the guide wire is inserted into the treatment instrument, and the front section of the guide wire remains inserted into the nipple, and the subsequent treatment instrument is guided into the nipple through the guide wire.

[0006] The endoscope head includes a head base and an elevator, which is located in the head base. The elevator is raised and lowered to control the angle of extension of a catheter, guidewire, or other treatment instrument. The endoscope body is then bent and rotated to allow the catheter or other treatment instrument to be inserted into the papilla and reach the pancreatic or bile duct.

[0007] like Figure 1 As shown in , when the guide wire is extended from the instrument channel into the receiving space at the end of the endoscope head, its extended position is not fixed:

[0008] If the guide wire is extended as shown by the thick line a, the guide wire normally passes through the instrument channel and extends from the end of the endoscope head;

[0009] If the guide wire is extended as shown by the thick line b, the guide wire is extended to the right. This is because when the end of the endoscope head penetrates deep into the human body, it is blocked by the organs on the left side of the human body, causing the guide wire to be extended to the right. At this time, the guide wire is in the right-side extended state.

[0010] If the guide wire is extended as shown by the thick line c, the guide wire is extended to the left. This is because when the end of the endoscope head penetrates deep into the human body, it is blocked by the organs on the right side of the human body, causing the guide wire to be extended to the left. At this time, the guide wire is in a left-biased extended state.

[0011] When the guide wire is in a biased extended state, it cannot continue to extend along the guide groove of the forceps elevator to the positioning slot at the top of the forceps elevator, but deviates from the forceps elevator and extends out of the receiving space. In this case, the guide wire cannot be positioned before and after the forceps elevator is lifted, thereby failing to achieve the purpose of fixing the guide wire. As a result, other treatment instruments cannot be guided to the predetermined position by the guide wire after extending from the instrument channel, and surgery cannot be performed.

[0012] Similarly, during treatment, the catheter or other treatment instrument is extended in the same manner as the guidewire.

[0013] Therefore, in the existing technology, how to effectively and accurately clamp and fix the positioning parts such as guide wires, catheters or other treatment instruments when they are extended in a biased manner, so as to prevent the positioning parts from falling out of the nipple and moving into the nipple, is a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the Invention

[0014] In view of this, the object of the present invention is to provide an endoscope lifting forceps, an endoscope head end and a duodenoscope system, which can effectively and accurately clamp and fix the positioned parts such as guide wires, catheters or other treatment instruments that are extended in a biased manner, so as to prevent the positioned parts from falling out of the nipple and moving into the inside of the nipple.

[0015] To achieve the above object, the present invention provides the following technical solutions:

[0016] An endoscope forceps elevator, wherein the bottom of the endoscope forceps elevator is connected to the instrument channel and is provided with a hinge portion for hinged connection with the end seat of the endoscope head;

[0017] The top of the endoscope forceps elevator is provided with a positioning groove adapted to the positioned member;

[0018] The side of the endoscope lifting forceps is provided with a shearing edge and a guiding surface, and the guiding surface is located between the positioning groove and the shearing edge;

[0019] During the lifting process of the endoscope lifting forceps, the shear edge can move along the inner surface of the head end seat to guide the positioned part in the first biased extended state to the guide surface, and the guide surface can guide the positioned part into the positioning groove, and the positioning groove can cooperate with the abutment fixing part to clamp and fix the positioned part.

[0020] Preferably, in the above-mentioned endoscope forceps elevator, the outer notch of the positioning groove is a positioning bayonet located at the top end of the endoscope forceps elevator;

[0021] A guide groove is provided between the positioning bayonet and the instrument channel and is connected to both of them respectively. Before the endoscope lifting forceps is lifted, the positioned member can be guided into the positioning bayonet through the guide groove and be laterally limited.

[0022] Preferably, in the above-mentioned endoscopic forceps elevator, the positioning groove is a strip-shaped slot structure, one side of the positioning groove intersects with the guide surface to form a first transition edge or transition surface, and the other side of the positioning groove intersects with the guide groove to form a second transition edge.

[0023] An endoscope head end comprises a head end seat and a forceps elevator, wherein the forceps elevator is the endoscope forceps elevator as described above.

[0024] Preferably, in the above-mentioned endoscope head end, the head end seat includes a first mounting portion, a second mounting portion and a receiving space for accommodating the forceps lifter, the bottom of the receiving space is used to communicate with the instrument channel, the two sides of the receiving space are respectively a first inner side surface of the first mounting portion and a second inner side surface of the second mounting portion, the front side of the first mounting portion is a working surface for installing functional components intersecting with the first inner side surface, a raised wall protruding out of the working surface is provided on the working surface near the bottom of the receiving space, the inner side surface of the raised wall is coplanar with the first inner side surface and both are inner side surfaces of the head end seat;

[0025] During the lifting process of the forceps lifter, the shearing edge can move along the inner side surface of the protruding wall to guide the positioned member in the first deflected extended state onto the guide surface.

[0026] Preferably, in the above-mentioned endoscope head end, the outer edge of the raised wall includes an inclined edge with a gradually decreasing raised height, and the portion of the inclined edge with the highest raised height is closer to the bottom of the accommodating space than the portion with the lowest raised height.

[0027] Preferably, in the above-mentioned endoscope head end, the working surface is provided with a first mounting surface, a second mounting surface and a third mounting surface in sequence along the axial direction, wherein:

[0028] The radial outer side of the bottom of the receiving space is the first mounting surface;

[0029] The radial outer side of the top of the receiving space is the third mounting surface;

[0030] The second mounting surface is an inclined surface located between the first mounting surface and the third mounting surface;

[0031] A distance between the first mounting surface and a center plane of the endoscope head end is smaller than a distance between the third mounting surface and a center plane of the endoscope head end seat, and the raised wall is provided on the first mounting surface.

[0032] Preferably, in the above-mentioned endoscope head end, the functional device includes:

[0033] a nozzle of a water-gas system, the nozzle being mounted in the first mounting surface;

[0034] an objective lens of an imaging system, wherein the objective lens is mounted in the second mounting surface;

[0035] A lens of the lighting system is mounted in the third mounting surface.

[0036] Preferably, in the above-mentioned endoscope head end, the angle between the inner side surface of the head end seat and the guide surface is greater than 90 degrees and less than 180 degrees.

[0037] Preferably, in the above-mentioned endoscope head end, the abutting fixing member is located at the bottom of the accommodating space, and the abutting surface of the abutting fixing member includes a first abutting surface and a second abutting surface;

[0038] The first abutting surface is used to cooperate with the positioning groove to clamp and fix the positioned member;

[0039] The endoscope lifter is provided with the shearing edge on one side and a side positioning portion on the other side. After the endoscope lifter is lifted, the side positioning portion can cooperate with the second abutting surface to clamp and fix the positioned member in the second biased extended state.

[0040] Preferably, in the above-mentioned endoscope head end, the second abutting surface and the second inner surface constitute a clamping groove for accommodating the side positioning portion. When the positioned member is in the second biased extended state, after the lifting forceps is lifted, the positioned member can be abutted and fixed in the clamping groove by the side positioning portion.

[0041] Preferably, in the above-mentioned endoscope head end, the angle between the first abutting surface and the central axis of the endoscope head end is greater than zero.

[0042] Preferably, in the above-mentioned endoscope head end, the second abutting surface is a plane, a curved surface or a stepped surface.

[0043] A duodenoscope system is provided with the endoscope head end as described above.

[0044] It can be seen from the above technical solution that the endoscope lifting forceps, endoscope head end and duodenoscope system provided by the present invention can adjust the positioned parts such as guide wires, catheters or other treatment instruments back into the positioning groove when they are extended in a biased manner, so as to effectively and accurately clamp and fix them, thereby preventing the positioned parts from falling out of the nipple and moving into the inside of the nipple, and allowing the operation to proceed smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0046] Figure 1 Schematic diagrams of three different trajectories of a guide wire in the prior art when it is extended normally, extended to the right, and extended to the left;

[0047] Figure 2 This is a schematic structural diagram of a forceps lifter provided in a first specific embodiment of the present invention;

[0048] Figure 3 It is a structural schematic diagram of the abutting fixing member provided in the second specific embodiment of the present invention;

[0049] Figure 4 A schematic diagram of the positional relationship between the forceps lifter provided in the second specific embodiment of the present invention and the abutment fixing member after the forceps lifter is lifted;

[0050] Figure 5 This is a schematic structural diagram of an endoscope head end provided in a second specific embodiment of the present invention;

[0051] Figure 6 This is a structural schematic diagram of the guide wire provided in the second specific embodiment of the present invention when it is normally extended and positioned by the positioning bayonet of the forceps lifting device;

[0052] Figure 7 This is a schematic structural diagram of the forceps lifting device when the guidewire is extended to the right or to the left, provided in the second specific embodiment of the present invention;

[0053] Figure 8This is an exploded schematic diagram of the guide wire's movement trajectory when the guide wire extending to the right is guided into the positioning slot of the forceps elevator by the guide surface of the forceps elevator during the forceps elevator provided in the second specific embodiment of the present invention;

[0054] Figure 9 for Figure 8 Schematic diagram of the guide wire movement direction;

[0055] Figure 10 for Figure 9 Another angle view of

[0056] Figure 11 for Figure 10 Schematic diagram of the angle between the plane where the guiding surface of the middle lifting forceps is located and the axial direction of the endoscope head end;

[0057] Figure 12 for Figure 11 Another angle view of

[0058] Figure 13 This is a structural schematic diagram of the guide wire provided in the second specific embodiment of the present invention after being extended to the left and clamped and positioned by the lifting forceps and the abutment fixing member;

[0059] Figure 14 This is a schematic structural diagram of a duodenoscope system provided in the third specific embodiment of the present invention.

[0060] in:

[0061] 1-lifting forceps, 2-butt fixing piece, 3-head end seat, 4-guide wire,

[0062] 10- positioning bayonet, 11- shearing edge, 12- guide surface, 13- side positioning portion, 14- guide groove,

[0063] 20- first abutting surface;

[0064] 31-first mounting portion, 32-second mounting portion,

[0065] 310- raised wall, 311- working surface, 312- nozzle, 313- objective lens, 314- lens;

[0066] 3100-slanted edges,

[0067] 100-light source device, 200-processor device, 300-treatment insertion part,

[0068] 301-operation end, 302-endoscope head end. DETAILED DESCRIPTION

[0069] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0070] First specific embodiment

[0071] See also Figure 2 , Figure 2 This is a schematic structural diagram of the forceps lifter provided in the first specific embodiment of the present invention.

[0072] A first embodiment of the present invention provides an endoscope forceps elevator. The bottom of the endoscope forceps elevator communicates with the instrument channel and is provided with a hinged portion for articulating with the endoscope head end seat 3. The top of the endoscope forceps elevator is provided with a positioning groove 10 adapted to the positioned member. The side of the endoscope forceps elevator is provided with a shearing edge 11 and a guide surface 12, with the guide surface 12 located between the positioning groove 10 and the shearing edge 11.

[0073] When the positioned part is extended to the right (i.e., "in the first deflected extended state"), as the endoscope lifter is lifted: first, the shearing edge 11 can move along the inner surface of the head end seat 3 to guide the positioned part in the right-deflected extended state to the guide surface 12; then, the guide surface 12 can guide the positioned part to the positioning groove 10; finally, the positioning groove 10 of the endoscope lifter cooperates with the abutment fixing part 2 to clamp and fix the positioned part.

[0074] It can be seen that the endoscopic lifting forceps provided by the first specific embodiment of the present invention can adjust the guide wire, catheter or other treatment instruments and other positioned parts back into the positioning groove 10 when they are extended in a biased manner, so as to effectively and accurately clamp and fix them, thereby preventing the positioned parts from falling out of the nipple and moving into the inside of the nipple, and allowing the operation to proceed smoothly.

[0075] Specifically, in the aforementioned endoscopic forceps elevator, the outer notch of the positioning slot 10 is a positioning bayonet 100 located at the top of the endoscopic forceps elevator. A guide slot 14 is provided between the positioning bayonet 100 and the instrument channel, communicating with both. Before lifting, the positioned member can be guided into the positioning bayonet 100 and laterally restrained via the guide slot 14. During the lifting process, the guide surface 12 guides the positioned member into the positioning slot 10 and the positioning bayonet 100 for positioning.

[0076] Specifically, in the above-mentioned endoscope forceps elevator, the positioning groove 10 is a strip-shaped card slot structure, one side of the positioning groove 10 intersects with the guide surface 12 to form a first transition edge or transition surface, and the other side of the positioning groove 10 intersects with the guide groove 14 to form a second transition edge.

[0077] Second specific embodiment

[0078] See also Figures 3 to 13 , Figure 3 It is a structural schematic diagram of the abutting fixing member provided in the second specific embodiment of the present invention; Figure 4 A schematic diagram of the positional relationship between the forceps lifter provided in the second specific embodiment of the present invention and the abutment fixing member after the forceps lifter is lifted; Figure 5 This is a schematic structural diagram of an endoscope head end provided in a second specific embodiment of the present invention; Figure 6 This is a structural schematic diagram of the guide wire provided in the second specific embodiment of the present invention when it is normally extended and positioned by the positioning bayonet of the forceps lifting device; Figure 7 This is a schematic structural diagram of the forceps lifting device when the guidewire is extended to the right or to the left, provided in the second specific embodiment of the present invention; Figure 8 This is an exploded schematic diagram of the guide wire's movement trajectory when the guide wire extending to the right is guided into the positioning slot of the forceps elevator by the guide surface of the forceps elevator during the forceps elevator provided in the second specific embodiment of the present invention; Figure 9 for Figure 8 Schematic diagram of the guide wire movement direction; Figure 10 for Figure 9 Another angle view of Figure 11 for Figure 10 Schematic diagram of the angle between the plane where the guiding surface of the middle lifting forceps is located and the axial direction of the endoscope head end; Figure 12 for Figure 11 Another angle view of Figure 13 This is a structural schematic diagram of the guide wire provided in the second specific embodiment of the present invention after it extends to the left and is clamped and positioned by the lifting forceps and the abutment fixing member.

[0079] The second embodiment of the present invention provides an endoscope head end, which includes a head end base 3 and a forceps elevator 1. The forceps elevator 1 is the endoscope forceps elevator provided in the first embodiment of the present invention.

[0080] Specifically, see Figure 5 The head end seat 3 in the endoscope head end includes a first mounting portion 31, a second mounting portion 32, and a receiving space for accommodating the forceps elevator 1. The bottom of the receiving space is used to communicate with the instrument channel, and the two sides of the receiving space are respectively the first inner side surface of the first mounting portion 31 and the second inner side surface of the second mounting portion 32.

[0081] The front of the first mounting portion 31 is a working surface 311 intersecting with the first inner side surface. The working surface 311 is used to install functional components. A raised wall 310 protruding from the working surface 311 is provided on the working surface 311 near the bottom of the accommodating space. The inner side surface of the raised wall 310 is coplanar with the first inner side surface and both are inner side surfaces of the head end seat 3.

[0082] When the positioned member extends from the instrument channel and to the right at the bottom of the receiving space, it comes into contact with the first inner side surface of the first mounting portion 31. Because the first inner side surface is provided with a raised wall 310, which increases the outward extension distance of the first inner side surface of the first mounting portion 31, it can guide and straighten the positioned member, helping to prevent the positioned member from bending outward from the first mounting portion 31 and deviating from the central axis of the endoscope head seat.

[0083] Furthermore, during the lifting process of the forceps lifter 1, the shearing edge 11 can be moved along the first inner side surface of the first mounting portion 31 and the inner side surface of the raised wall 310 to the position of the positioned part that extends to the right, and the positioned part is moved to the guide surface 12 through the shearing edge 11, and then guided to the positioning groove 10 and the positioning bayonet 100 at the top of the forceps lifter 1 through the guide surface 12. The positioned part is positioned (i.e., laterally limited) by the positioning bayonet 100, and when the forceps lifter 1 is lifted to the limit position, the positioned part can be clamped and fixed by the positioning groove 10 of the forceps lifter 1 and the abutment surface 20 of the abutment fixing part 2.

[0084] Specifically, if Figure 5 and Figure 6 As shown in , the outer edge of the raised wall 310 includes an inclined edge 3100 with a gradually decreasing raised height, and the portion of the inclined edge 3100 with the highest raised height is closer to the bottom of the receiving space than the portion with the lowest raised height.

[0085] Thus, when the positioned part extends out of the instrument channel and extends to the right at the bottom of the receiving space, the forceps lifter 1 is lifted, and the shearing edge 11 moves along the first inner side surface of the first mounting portion 31 and the inner side surface of the raised wall 310 to the position of the positioned part extending to the right; then, as the forceps lifter 1 is lifted and the shearing edge 11 moves, the positioned part can be moved to the guide surface 12 by the shearing edge 11, and at this time, as the forceps lifter 1 is lifted and the shearing edge 11 moves, the inclined edge 3100 of the raised wall 310 can gradually straighten the positioned part. This straightening process can be seen in Figure 8 The middle arrow indicates the moving trajectory of the guide wire. Arrow t1 indicates that during the lifting process of the forceps lifter 1, the guide wire is pressed toward the abutment fixing part 2; arrow t2 indicates that the guide wire is guided into the positioning bayonet 100 by the shearing edge 11 and the guide surface 12 on the right side of the forceps lifter.

[0086] Specifically, the working surface 311 of the first mounting portion 31 is axially arranged with a first mounting surface, a second mounting surface, and a third mounting surface. The first mounting surface is located radially outward from the bottom of the receiving space; the third mounting surface is located radially outward from the top of the receiving space; and the second mounting surface is an inclined surface located between the first and third mounting surfaces. Furthermore, the distance from the center plane of the endoscope head end to the first mounting surface is shorter than the distance from the center plane of the endoscope head end to the third mounting surface. As shown in the figure, a raised wall 310 is provided on the first mounting surface and at the intersection of the first and second mounting surfaces.

[0087] Specifically, the functional components mounted on the working surface 311 of the first mounting portion 31 include a nozzle 312 for the water vapor system, an objective lens 313 for the imaging system, and a lens 314 for the illumination system. The nozzle 312 is mounted on the first mounting surface, the objective lens 313 is mounted on the second mounting surface, and the lens 314 is mounted on the third mounting surface.

[0088] Specifically, the angle between the first inner side surface (i.e., the inner side surface of the first mounting portion 31 in the head end seat 3) and the guide surface 12 is greater than 90 degrees and less than 180 degrees. Since the first inner side surface is parallel to the central axis of the endoscope head end, the angle between the guide surface 12 on the forceps elevator 1 and the central axis of the endoscope head end is equal to the angle between the first inner side surface and the guide surface 12. For details, please refer to Figure 11 The dotted line and the angle R in .

[0089] Therefore, please see Figure 11 When the positioned part extends from the right side of the abutting fixing part 2 and the right side of the forceps lifting device 1 (i.e., extends to the right), and the forceps lifting device 1 is lifted at a small angle, when viewed from the extended end of the positioned part, the first inner surface of the head end seat 3 and the guide surface 12 on the forceps lifting device 1 form a V-shaped groove to limit the guide wire.

[0090] See also Figure 8 and Figure 9 As the forceps lifting device 1 is lifted, the guided movement of the positioned member can be decomposed into two movements. One movement is the movement of being guided along the edge of the raised wall 310, such as Figure 9 Another movement is along the guide surface 12 of the lifting forceps is introduced into the positioning bayonet movement, such as Figure 9 As shown by the thick arrow tilted to the left. Figure 8 shown.

[0091] Specifically, the abutting fixing member 2 is located at the bottom of the receiving space, and the abutting surface of the abutting fixing member 2 includes a first abutting surface 20 and a second abutting surface. The first abutting surface 20 is used to cooperate with the positioning groove 10 to clamp and fix the positioned member; a shearing edge 11 is provided on the right side of the endoscope lifting forceps, and a side positioning portion 13 is provided on the left side of the endoscope lifting forceps. After the endoscope lifting forceps is lifted, the side positioning portion 13 can cooperate with the second abutting surface (i.e., the left abutting surface of the abutting fixing member 2) to clamp and fix the positioned member that is in a leftwardly extended state (i.e., "in a second biased extended state").

[0092] Furthermore, the second abutting surface on the abutting fixing member 2 and the second inner side surface on the head end seat 3 constitute a clamping groove for accommodating the side positioning portion 13 of the forceps lifting device 1.

[0093] like Figure 13 As shown, when the positioned member extends from the left side of the abutment fixing member 2 and the left side of the forceps lifter 1, after the forceps lifter 1 is lifted, the positioned member can be abutted and fixed in the clamping groove by the side positioning portion 13, forming a two-point clamping.

[0094] Specifically, the angle between the first abutting surface 20 on the abutting fixing member 2 and the central axis of the endoscope head end is greater than zero.

[0095] Specifically, the first abutting surface 20 on the abutting fixing member 2 can be a plane, a curved surface or a stepped surface; the second abutting surface on the abutting fixing member 2 can be a plane, a curved surface or a stepped surface.

[0096] Third specific embodiment

[0097] See also Figure 14 , Figure 14 This is a schematic structural diagram of a duodenoscope system provided in the third specific embodiment of the present invention.

[0098] A third embodiment of the present invention provides a duodenoscope system, in which an endoscope body is provided with an endoscope head end as provided in the first embodiment of the present invention.

[0099] The duodenoscope system includes an endoscope body part, a light source part 100 and a host part 200; wherein, the endoscope body part generally includes an insertion part 300 for inserting into the body cavity to be tested, one end of the insertion part 300 is an endoscope head end 302, and the other end is an operating end 301, a forceps lifter is provided in the endoscope head end 302, and a lever for controlling the lifting and lowering of the forceps lifter is provided on the operating end 301; the light source part 100 provides white light illumination and special light illumination for the endoscope, and the host part 200 provides signal control of the endoscope, image processing of the endoscope body, etc., wherein the host part 200 is connected to a display to realize the display of endoscopic images.

[0100] Specifically, the endoscope head portion 302 is provided with a nozzle 312 for the water and air system, an objective lens 313 for the imaging system, and a lens 314 for the illumination system. The nozzle 312 sprays a fluid, such as water or air, onto the outer surface of the objective lens 313 to clean it. The imaging system objective lens houses a CCD imaging element of the observation optical system, which captures images captured by the insertion portion and transmits them to the host computer for display. An optical fiber is connected to the lens 314, serving as a light transmission path.

[0101] Furthermore, the endoscope head end seat outer shell is provided with a head end cap, and the head end cap is detachably connected to the head end seat.

[0102] It should be noted that the terms “left” and “right” in this article are based on Figures 5 to 13 This is provided for reference only as an example. In other specific embodiments, the endoscope head end may be configured to have a bilaterally symmetrical structure to that provided in the second specific embodiment of the present invention, while maintaining the same functional effects. In this case, the positioned member being in the first deflected extended state means that the positioned member is extended to the left, and the positioned member being in the second deflected extended state means that the positioned member is extended to the right. For other structures, please refer to the above specific embodiments and will not be described in detail herein.

[0103] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0104] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0105] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one 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 limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An endoscope head, comprising a head end seat (3) and a forceps lifter (1), characterized in that: The bottom of the forceps lifter (1) is connected to the instrument channel and is provided with a hinge portion for hinged connection with the head end seat (3); The top of the forceps lifter (1) is provided with a positioning groove (10) adapted to the positioned member; The side of the lifting forceps (1) is provided with a shearing edge (11) and a guide surface (12), and the guide surface (12) is located between the positioning groove (10) and the shearing edge (11); During the lifting process of the lifting clamp (1), the shear edge (11) can move along the inner side surface of the head end seat (3) to guide the positioned part in the first biased extended state to the guide surface (12), and the guide surface (12) can guide the positioned part into the positioning groove (10), and the positioning groove (10) can cooperate with the abutting fixing part (2) to clamp and fix the positioned part.

2. The endoscope head according to claim 1, wherein: The outer notch of the positioning groove (10) is a positioning bayonet (100) located at the top end of the forceps lifting device (1); A guide groove (14) is provided between the positioning bayonet (100) and the instrument channel, and is communicated with both of them respectively. Before the forceps lifting device (1) is lifted, the positioned member can be guided into the positioning bayonet (100) through the guide groove (14) and be laterally limited.

3. The endoscope head according to claim 2, wherein: The positioning groove (10) is a strip-shaped slot structure, one side of the positioning groove (10) intersects with the guide surface (12) to form a first transition edge or transition surface, and the other side of the positioning groove (10) intersects with the guide groove (14) to form a second transition edge.

4. The endoscope head according to claim 1, wherein: The head end seat (3) comprises a first mounting portion (31), a second mounting portion (32) and a receiving space for accommodating the lifting forceps (1), the bottom of the receiving space being used to connect the instrument channel; the two sides of the receiving space are respectively the first inner side surface of the first mounting portion (31) and the second inner side surface of the second mounting portion (32); the front of the first mounting portion (31) is a working surface (311) for installing functional devices intersecting with the first inner side surface, and a raised wall (310) protruding out of the working surface (311) is provided on the working surface (311) near the bottom of the receiving space, the inner side surface of the raised wall (310) is coplanar with the first inner side surface and both are inner side surfaces of the head end seat (3); the raised wall (310) extends in a direction away from the bottom of the receiving space and exceeds the abutting fixing member (2); During the lifting process of the forceps lifter (1), the shearing edge (11) can move along the inner side surface of the raised wall (310) to guide the positioned member in the first deflected extended state onto the guide surface (12).

5. The endoscope head according to claim 4, wherein: The outer edge of the raised wall (310) comprises an inclined edge (3100) with a gradually decreasing raised height, and the portion of the inclined edge (3100) with the highest raised height is closer to the bottom of the receiving space than the portion with the lowest raised height.

6. The endoscope head according to claim 4, wherein: In the working surface (311), a first mounting surface, a second mounting surface and a third mounting surface are sequentially arranged along the axial direction, wherein: The radial outer side of the bottom of the receiving space is the first mounting surface; The radial outer side of the top of the receiving space is the third mounting surface; The second mounting surface is an inclined surface located between the first mounting surface and the third mounting surface; The distance between the first mounting surface and the center plane of the endoscope head end is smaller than the distance between the third mounting surface and the center plane of the head end seat (3), and the raised wall (310) is provided on the first mounting surface.

7. The endoscope head according to claim 6, wherein: The functional device includes: a nozzle (312) of a water-gas system, the nozzle (312) being mounted in the first mounting surface; an objective lens (313) of an imaging system, the objective lens (313) being mounted in the second mounting surface; A lens (314) of the lighting system, wherein the lens (314) is mounted in the third mounting surface.

8. The endoscope head according to any one of claims 1 to 7, characterized in that: The included angle between the inner side surface of the head end seat (3) and the guide surface (12) is greater than 90 degrees and less than 180 degrees.

9. The endoscope head according to claim 4, wherein: The abutting fixing member (2) is located at the bottom of the receiving space, and the abutting surface of the abutting fixing member (2) includes a first abutting surface (20) and a second abutting surface; The first abutting surface (20) is used to cooperate with the positioning groove (10) to clamp and fix the positioned member; The lifting clamp (1) is provided with the shearing edge (11) on one side and a side positioning portion (13) on the other side. After the lifting clamp (1) is lifted, the side positioning portion (13) can cooperate with the second abutting surface to clamp and fix the positioned member in the second deflected extended state.

10. The endoscope head according to claim 9, wherein: The second abutting surface and the second inner side surface constitute a clamping groove for accommodating the side positioning portion (13); when the positioned member is in the second deflected extended state, after the lifting clamp (1) is lifted, the positioned member can be abutted and fixed in the clamping groove by the side positioning portion (13).

11. The endoscope head according to claim 10, wherein: The angle between the first abutting surface (20) and the central axis of the endoscope head end is greater than zero.

12. The endoscope head according to claim 10, wherein: The second abutting surface is a plane, a curved surface or a stepped surface.

13. A duodenoscope system, comprising, characterized in that, The duodenoscope system is provided with the endoscope head end according to any one of claims 1 to 12.

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