Endoscope elevators, endoscope head tips, and duodenoscope systems

Abstract

The present invention discloses an endoscope lifting device, an endoscope head end, and a duodenoscope system. The bottom end of the endoscope lifting device is connected to an instrument channel and is provided with a hinged portion for hinged connection with the head end seat, and a positioning bayonet is provided at the top end; a guide groove is provided between the instrument channel and the positioning bayonet, and before the endoscope lifting device lifts the forceps, the positioned part can be guided into the positioning bayonet through the guide groove and laterally limited and positioned. The present invention can position the positioned part directly by the positioning bayonet, so that the positioned part such as the catheter or guide wire can be accurately and effectively positioned during the lifting process of the lifting device and during the operation, so as to achieve effective fixation and precise adjustment of the treatment instrument, so that the guide wire will not fall out of the nipple and will not move into the nipple, thereby reducing the surgical risk and increasing the convenience of use.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to an endoscope lifting device, 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] Among them, a lifting forceps is provided at the end of the endoscope head. By raising and lowering the lifting forceps, the angle of extension of the catheter or other treatment instruments can be controlled. The bending, rotation and other operations of the scope body can then be combined to allow the catheter or other treatment instruments to be inserted into the nipple to reach the pancreatic duct or bile duct.

[0007] In the existing technology, how to effectively and accurately position and fix catheters, guide wires and other treatment instruments to prevent the guide wires and other treatment instruments from falling out of the nipple or moving into the nipple is a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Invention

[0008] In view of this, the object of the present invention is to provide an endoscope elevator, an endoscope head end and a duodenoscope system, which can prevent the guide wire from falling out of the nipple and moving into the inside of the nipple, thereby achieving effective fixation and precise adjustment of the disposal instrument, thereby reducing surgical risks and increasing ease of use.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] An endoscope forceps elevator, characterized in that the bottom end of the endoscope forceps elevator is connected to the instrument channel and is provided with a hinge portion for hinged connection with the head end seat;

[0011] The top end of the endoscope forceps lifter is provided with a positioning bayonet that can guide the extending direction of the positioned part, and a guide groove is provided between the instrument channel and the positioning bayonet, and the two ends of the guide groove are respectively connected to the instrument channel and the positioning bayonet. Before the endoscope forceps lifter lifts the forceps, the positioned part can be guided into the positioning bayonet through the guide groove and limited laterally.

[0012] Preferably, a retaining groove is provided between the positioning bayonet and the upper part of the guide groove, and the retaining groove is provided inwardly along the positioning bayonet, the front edge of the retaining groove is the first edge of the positioning bayonet, and the rear edge of the retaining groove forms a clamping portion at the intersection with the recessed portion of the forceps lifter. After the endoscope forceps lifter lifts the forceps, the clamping portion can cooperate with the abutting fixing piece to clamp and fix the positioned piece.

[0013] Preferably, the retaining groove is a bar-shaped slot structure.

[0014] Preferably, a junction edge is formed at the intersection of one side of the retaining groove and the guide groove, and the retaining groove can be slid along the junction edge by the positioning member to the retaining groove during the process of the forceps lifting device.

[0015] Preferably, before the endoscope forceps lifting device lifts the forceps, the end extension direction of the positioned part is deflected during the process of the positioned part being guided by the guide groove and extending out of the positioning bayonet, and the deflection angle is 30 degrees to 90 degrees.

[0016] Preferably, from the time when the positioned member just extends into the guide groove from the instrument channel to the time when the forceps lifter is controlled to lift the forceps and clamp and fix the positioned member, the turning angle of the positioned member is greater than 90 degrees.

[0017] Preferably, in the above-mentioned endoscopic forceps elevator, the positioned member is a catheter, a guide wire or other treatment instrument.

[0018] Preferably, the cross-sectional profile of the retaining groove is U-shaped, V-shaped, T-shaped or arc-shaped.

[0019] Preferably, in the above-mentioned endoscopic forceps elevator, the bottom arc diameter of the positioning bayonet is 1 mm, so that the guide wire can fall into the positioning bayonet.

[0020] An endoscope head portion includes a head end seat and a forceps elevator, wherein the forceps elevator is the endoscope forceps elevator as described above;

[0021] The head end seat is provided with a receiving space capable of accommodating the forceps lifting device, the receiving space is provided with an abutting fixing piece, and the abutting fixing piece is provided with a positioning surface;

[0022] The hinged portion of the forceps lifter is hinged to the head end seat via a rotating arm. After the forceps lifter lifts the forceps, it can cooperate with the positioning surface to form a clamping structure to clamp and fix the positioned part.

[0023] Preferably, the positioning surface is a plane, an arc-shaped surface or a step surface, and can penetrate into the clamping portion of the retaining groove of the forceps lifter to form a clamping structure therewith.

[0024] Preferably, the clamping gap of the clamping structure is less than or equal to 0.2 mm.

[0025] Preferably, the receiving space may be a through hole structure, a blind hole structure, or a through groove structure of other regular or irregular shapes.

[0026] A duodenoscope system, wherein the endoscope body of the duodenoscope system is provided with the endoscope head end as described above, wherein:

[0027] The head end seat in the end of the endoscope head is also provided with a nozzle of a water-gas system, an objective lens of an imaging system and a lens of an illumination system;

[0028] The 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.

[0029] The endoscope lifter, endoscope head end and duodenoscope system provided by the present invention can position the guide wire directly by the positioning bayonet, so that the guide wire can be accurately and effectively positioned during the subsequent lifting process of the lifter and the operation, avoiding lateral slippage and deviation of the guide wire from the clamping position, thereby facilitating the effective fixation and precise adjustment of the disposal instrument, so that the guide wire will not fall out of the nipple and will not move into the nipple, thereby reducing surgical risks and increasing ease of use.

[0030] Moreover, even if the guide wire or other positioned parts are excessively bent or thin and soft, resulting in a small rebound force, the clamping surface and the clamping portion form a clamping gap, so that the guide wire or other positioned parts can be effectively fixed through the clamping gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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.

[0032] Figure 1 A schematic structural diagram of an endoscope forceps elevator provided in a first specific embodiment of the present invention;

[0033] Figure 2 A schematic diagram of the trajectory of the positioned member moving in the guide groove of the endoscope forceps elevator provided in the first specific embodiment of the present invention;

[0034] Figure 3 A schematic diagram of the positional relationship between the guide wire and the treatment instrument when the guide wire is positioned at the positioning bayonet of the endoscope lifting forceps provided in the first specific embodiment of the present invention;

[0035] Figure 4 A diagram showing the deflection trajectory of the guidewire during its extension from the endoscope forceps elevator provided by the first embodiment of the present invention;

[0036] Figure 5 A schematic diagram of the positional relationship between the endoscope forceps lifting device and the abutment fixing member provided in the first specific embodiment of the present invention;

[0037] Figure 6 A partial cross-sectional view of the end of the endoscope head when the endoscope lifting device provided by the first embodiment of the present invention is engaged with the abutment fixing member to clamp the guide wire after the lifting of the endoscope;

[0038] Figure 7 A schematic structural diagram of the clamping portion of the endoscope forceps elevator provided by the first specific embodiment of the present invention and the positioning surface of the abutting fixing member cooperate to form a clamping gap;

[0039] Figure 8 A schematic structural diagram of an abutting fixing member provided in a second specific embodiment of the present invention;

[0040] Figure 9 A schematic diagram of the internal structure of an endoscope head portion provided in a second specific embodiment of the present invention;

[0041] Figure 10 A schematic structural diagram of a forceps elevator provided by a second specific embodiment of the present invention, wherein the guide wire of the forceps elevator extends from the end of the endoscope head;

[0042] Figure 11 This is a schematic structural diagram of a duodenoscope system provided in the third specific embodiment of the present invention.

[0043] in:

[0044] 1-head end seat, 2-lifting forceps, 3-butt fixing piece, 4-guide wire,

[0045] 5- Other treatment instruments (i.e. treatment instruments other than the guide wire 4),

[0046] 11- rotating arm, 12- pulling wire, 13- nozzle, 14- objective lens, 15- lens,

[0047] 20- positioning bayonet, 21- guide groove, 22- clamping groove, 23- clamping part,

[0048] 211-first edge, 212-second edge, 213-intersecting edge,

[0049] 30- positioning surface,

[0050] 100-light source device, 200-processor device, 300-treatment insertion part,

[0051] 301-operating end, 302-endoscope head end. DETAILED DESCRIPTION

[0052] 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.

[0053] First specific embodiment

[0054] See also Figures 1 to 7 , Figure 1 A schematic structural diagram of an endoscope forceps elevator provided in a first specific embodiment of the present invention; Figure 2 A schematic diagram of the trajectory of the positioned member moving in the guide groove of the endoscope forceps elevator provided in the first specific embodiment of the present invention; Figure 3 A schematic diagram of the positional relationship between the guide wire and the treatment instrument when the guide wire is positioned at the positioning bayonet of the endoscope lifting forceps provided in the first specific embodiment of the present invention; Figure 4 A diagram showing the deflection trajectory of the positioned member during the process of extending from the endoscope forceps elevator provided in the first specific embodiment of the present invention; Figure 5 A schematic diagram of the positional relationship between the endoscope forceps lifting device and the abutment fixing member provided in the first specific embodiment of the present invention; Figure 6 A partial cross-sectional view of the end of the endoscope head when the endoscope lifting device provided by the first embodiment of the present invention is engaged with the abutment fixing member to clamp the guide wire after the lifting of the endoscope; Figure 7This is a structural schematic diagram of the clamping portion of the endoscope forceps elevator provided by the first specific embodiment of the present invention and the positioning surface of the abutting fixing member when they cooperate to form a clamping gap.

[0055] The first specific embodiment of the present invention provides an endoscope forceps lifter (abbreviated as forceps lifter). Among them: the bottom end of the forceps lifter is connected to the instrument channel and is provided with a hinged portion for hinged connection with the head end seat 1; the top end of the forceps lifter is provided with a positioning bayonet 20 that can guide the extension direction of the positioned part. After the forceps lifter lifts the forceps, the positioning bayonet 20 can cooperate with the abutment fixing part 3 to guide and position the positioned part; the positioning bayonet 20 includes a first edge 211 and a second edge 212 connected to form a positioning bayonet. (The first edge 211 and the second edge 212 are both in Figure 1 、 Figure 2 and Figure 3 Displayed in bold.)

[0056] like Figure 1 、 Figure 2 and Figure 3 As shown, a guide groove 21 is provided on the forceps lifter between the instrument channel and the positioning bayonet 20, and the two ends of the guide groove 21 are respectively connected to the instrument channel and the positioning bayonet 20. Before the forceps lifter lifts the forceps, the positioned part can be guided into the positioning bayonet 20 through the guide groove 21 and laterally limited.

[0057] It should be noted here that, before the forceps lifter lifts the forceps, it includes the state before the forceps lifter lifts the forceps at all, and also includes the state before the forceps lifter lifts the forceps at a certain angle, but has not yet clamped the positioned part, so that the positioned part can be extended from the forceps lifter; "lateral limitation" refers to the side wall of the positioned part being engaged by the positioning bayonet 20 (or blocked or limited), to prevent the positioned part from sliding laterally and leaving the guide position.

[0058] like Figure 2 and Figure 3 As shown, between the positioning bayonet 20 and the guide groove 21, a retaining groove 22 is provided on the upper part of the guide groove 21, and the retaining groove 22 is specifically a strip-shaped bayonet structure, and the retaining groove 22 is arranged inwardly along the positioning bayonet 20, and the front edge of the retaining groove 22 is the first edge 211 of the positioning bayonet 20, which constitutes the notch of the retaining groove 22, and the notch plays a guiding and positioning role for the positioned part; the intersection edge 213 is formed at the intersection of the side edge of the retaining groove 22 and the guide groove 21, and the intersection edge 213 can enable the positioned part to slide into the retaining groove 22 along the intersection edge 213 during the lifting process of the forceps lifter; the clamping portion 23 is formed at the intersection of the rear edge of the retaining groove 22 and the recess of the forceps lifter, and the clamping portion 23 forms a clamping structure with the abutting fixing part 3, thereby clamping the positioned part.

[0059] The guiding action of the guide groove 21 is as follows Figure 4As shown, the arrow direction is a schematic diagram of the moving direction of the positioning member guided by the guide groove 21 to the positioning bayonet 20 before the forceps lifter lifts the forceps and extends out of the forceps lifter.

[0060] When the forceps lifter is lifted, the guide wire and other positioned parts have a certain resilience. Therefore, as the forceps are lifted, the positioned parts will slide along the intersection edge 213 to the position of the forceps lifter on the left dotted line, so that the positioned parts are retained in the retaining groove 22. The retaining structure formed by the clamping portion 23 of the retaining groove 22 and the abutting fixing member 3 clamps the positioned parts, thereby fixing the positioned parts. Due to the lateral limiting effect of the positioning bayonet 20, the guided-out position and the guided-out direction of the positioned parts remain unchanged during the process of sliding along the intersection edge 213 to the retaining groove 22. The retaining effect of the retaining groove 22 on the positioned parts makes the clamping position of the positioned parts predetermined, thus preventing the guide wire from deviating, and thus achieving a better clamping effect.

[0061] Specifically, the cross-sectional profile of the retaining groove 22 is U-shaped, V-shaped, T-shaped, arc-shaped or other structures.

[0062] like Figure 5 As shown, since the maximum outer diameter of the guide wire 4 is 0.97 mm, the bottom arc diameter of the positioning bayonet 20 is 1 mm. Therefore, the guide wire 4 can fall into the concave arc of the positioning bayonet 20, that is, the guide wire 4 can be led out from the first edge 211 and positioned by the first edge 211; and the diameter or width of other treatment instruments 5 is generally greater than 1 mm, so that the other treatment instruments 5 are led out along the second edge 212 of the positioning bayonet 20 and are clamped and positioned by the second edge 212.

[0063] It should be noted that the "positioned member" mentioned herein is specifically a catheter, a guide wire or other treatment instrument (treatment instrument may also be called a surgical instrument). For ease of explanation and understanding, this article takes the positioned member as a guide wire as an example for specific description.

[0064] Specifically, the process of inserting the guide wire into the nipple and fixing it during the surgical operation is as follows:

[0065] First, the guide wire is inserted into the guide groove 21 of the forceps elevator along the instrument channel provided in the insertion portion of the endoscope;

[0066] Continue to insert the guidewire, as Figure 2 As shown by the arrow, the guide wire extends into the retaining groove 22 along the guide groove 21, and the side wall of the retaining groove 22 laterally limits the guide wire and guides the guide wire into the positioning bayonet 20. Through the limiting and positioning function of the positioning bayonet 20, the direction in which the guide wire extends out of the forceps elevator is a predetermined direction. The positioning bayonet 20 can play a role in lateral limiting and positioning of the guide wire.

[0067] Then, control the forceps lifting device to lift the forceps (ie, the forceps lifting device rotates around the hinge axis, and its rotation direction can be seen in the figure). Figure 3 As the forceps are lifted, the positioned member slides along the intersection edge 213 into the holding groove 22, and then the guide wire is clamped by the clamping structure formed by the clamping portion 23 of the holding groove 22 and the positioning surface 30 of the abutting fixing member 3 (see Figure 6 、 7 ), in the process of the positioned part sliding through the intersection edge 213 to the retaining groove 22, due to the limiting and positioning function of the positioning bayonet 20, the lead-out position and lead-out direction of the positioned part remain unchanged, so that the guide wire does not fall out of the nipple and does not move into the nipple, so as to facilitate the fixation, precise adjustment and positioning of the disposal instrument 5.

[0068] Then, by controlling the lifting and lowering of the forceps, the extension angle of the guide wire and the treatment instrument can be controlled. Combined with the bending, rotation and other operations of the mirror body, the guide wire and the treatment instrument can be inserted into the nipple to reach the pancreatic duct or bile duct.

[0069] In the above process, due to the holding effect of the holding groove 22, the guide wire 4 will not shake or deviate after being clamped and fixed.

[0070] It can be seen that the endoscopic forceps elevator provided in the first specific embodiment of the present invention can enable the guide wire and other positioned parts to be positioned directly by the positioning bayonet 20, so that the guide wire can be accurately and effectively positioned during the subsequent lifting process of the forceps elevator and the operation, avoiding the guide wire from lateral slipping and deviation from the clamping position, which is conducive to the effective fixation and precise adjustment of the disposal instrument, so that the guide wire will not fall out of the nipple and will not move into the nipple, thereby reducing the surgical risk and increasing the convenience of use.

[0071] Specifically, before the endoscope forceps lifter is lifted, the guide wire is guided by the guide groove 21 and extends out of the forceps lifter through the positioning opening 20. The extension direction of the end of the guide wire is deflected, and the deflection angle is 30 degrees to 90 degrees. Therefore, the guide track of the guide groove 21 is specifically V-shaped, U-shaped or other similar structures. (The "deflection angle" mentioned in this paragraph is Figure 4 Angle a in .)

[0072] Specifically, from the moment the guide wire is first extended into the guide groove 21 through the instrument channel to the moment the forceps lifting device is controlled to lift the forceps and clamp the guide wire (at this time, the guide wire is clamped and fixed in the clamping structure formed by the clamping portion 23 and the positioning surface 30), during this process, the steering angle of the guide wire is greater than 90 degrees. (The "steering angle" mentioned in this paragraph is Figure 6 Angle b in .)

[0073] Second specific embodiment

[0074] See also Figures 8 to 10 , Figure 8 A schematic structural diagram of an abutting fixing member provided in a second specific embodiment of the present invention; Figure 9 A schematic diagram of the internal structure of an endoscope head portion provided in a second specific embodiment of the present invention; Figure 10 This is a schematic structural diagram of the forceps elevator provided by the second specific embodiment of the present invention when the front guide wire of the forceps elevator extends from the end of the endoscope head.

[0075] The second specific embodiment of the present invention provides an endoscope head portion, which includes a head end seat 1 and a forceps elevator 2. The forceps elevator 2 is the endoscope forceps elevator provided by the first specific embodiment of the present invention.

[0076] Specifically, in the above-mentioned end of the endoscope head, a receiving space capable of accommodating the forceps lifter 2 is provided on the head end seat 1, and an abutment fixing part 3 is provided in the receiving space, and a positioning surface 30 is provided on the abutment fixing part 3; the hinged part of the forceps lifter 2 is hinged to the head end seat 1 through the rotating arm 11. After the forceps lifter 2 lifts the forceps, the clamping structure formed by the clamping part 23 of the retaining groove 22 and the positioning surface 30 of the abutment fixing part 3 is used to clamp the positioned part.

[0077] Specifically, the "accommodation space" described herein can be a through-hole structure, a blind hole structure, or other regularly or irregularly shaped groove structure, or can also be a clearance space structure located at the top or side of the head end seat. The present invention does not limit the specific structure of the head end seat and its "accommodation space", as long as the forceps lifter 2 can be hinged to the head end seat and allowed to rotate relative to each other, those skilled in the art can implement it according to actual needs.

[0078] Preferably, if Figure 9 As shown in , the above-mentioned “accommodation space” is a through hole structure, a blind hole structure, or a through groove structure, and the positioning surface 30 is located in the accommodation space and near the opening of the instrument channel.

[0079] Specifically, the positioning surface 30 is a plane, an arc-shaped surface or a stepped surface, and can penetrate into the clamping portion 23 of the retaining groove 22 of the forceps lifter 2 and form a clamping structure therewith.

[0080] Specifically, the clamping gap of the clamping structure is less than or equal to 0.2 mm to ensure that the thinnest guide wire (with a diameter of 0.2 mm) can be effectively clamped. (For the "clamping gap", please refer to Figure 7 )

[0081] Specifically, if Figure 9As shown, the hinged end of the forceps elevator 2 is provided with a rotating arm 11, which is driven to rotate by a traction wire 12. The traction wire 12 is preferably a steel wire. During use, the lever provided on the operating end of the endoscope system connected to the endoscope body is operated to control the raising and lowering of the forceps elevator 2 via the traction wire 12 and the rotating arm 11, thereby controlling the clamping and fixing of the guidewire and other positioning parts by the clamping portion 23 and the positioning surface 30 of the retaining groove 22, and releasing and releasing them.

[0082] Third specific embodiment

[0083] See also Figure 11 , Figure 11 This is a schematic structural diagram of a duodenoscope system provided in the third specific embodiment of the present invention.

[0084] 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.

[0085] 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 a head end 302, and the other end is an operating end 301, a forceps lifter 2 is provided in the head end 302, and a lever for controlling the lifting and lowering of the forceps lifter 2 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.

[0086] Specifically, the endoscope's head assembly is equipped with a nozzle 13 for the water and air system, an objective lens 14 for the imaging system, and a lens 15 for the illumination system. The nozzle 13 sprays a fluid, such as water or air, onto the outer surface of the objective lens 15 to clean it. Inside the objective lens of the imaging system is a CCD (Card Processing Device) for the observation optical system, which captures images captured by the insertion section and transmits them to the host computer for display. An optical fiber is connected to the lens 15, serving as a light transmission path.

[0087] Furthermore, the head end seat outer shell of the above-mentioned endoscope clamping structure is provided with a head end cap, and the head end cap is detachably connected to the head end seat 1.

[0088] 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.

[0089] 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.

[0090] 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 forceps elevator, characterized in that: The bottom end of the endoscope lifting device is connected to the instrument channel and is provided with a hinge portion for hinged connection with the head end seat (1); The top end of the endoscope forceps lifting device is provided with a positioning bayonet (20) capable of guiding the extending direction of the positioned part. A guide groove (21) is provided between the instrument channel and the positioning bayonet (20), and both ends of the guide groove (21) are respectively connected to the instrument channel and the positioning bayonet (20). Before the endoscope forceps lifting device lifts the forceps, the positioned member can be guided into the positioning bayonet (20) through the guide groove (21) and laterally limited, so that the side wall of the positioned member is limited by the positioning bayonet (20) and cannot slide laterally or escape from the guide position. A retaining groove (22) is provided between the positioning bayonet (20) and the upper portion of the guide groove (21), the retaining groove (22) being provided inwardly along the positioning bayonet (20), the front edge of the retaining groove (22) being the first edge (211) of the positioning bayonet (20), the rear edge of the retaining groove (22) forming a clamping portion (23) at the intersection with the concave portion of the lifting device, and after the endoscope lifting device lifts the clamp, the clamping portion (23) can cooperate with the abutting fixing member (3) to clamp and fix the positioned member; A junction edge (213) is formed at the junction of one side of the retaining groove (22) and the guide groove (21), and the junction edge (213) can enable the positioned member to slide into the retaining groove (22) along the junction edge (213) during the process of the forceps lifting device lifting the forceps.

2. The endoscope forceps elevator according to claim 1, characterized in that: The retaining groove (22) is a strip-shaped slot structure.

3. The endoscope forceps elevator according to claim 1, characterized in that: Before the endoscope forceps lifting device lifts the forceps, during the process in which the positioned member is guided by the guide groove (21) and extends from the guide groove (21) to the positioning bayonet (20), the extending direction of the end portion of the positioned member is deflected, and the deflection angle is 30 to 90 degrees.

4. The endoscope forceps elevator according to claim 1, characterized in that: From the moment the positioned part just extends into the guide groove (21) from the instrument channel to the moment the forceps lifter is controlled to lift the forceps and clamp and fix the positioned part, the steering angle of the positioned part is greater than 90 degrees.

5. The endoscope forceps elevator according to claim 1, characterized in that: The positioned member is a catheter or a guide wire.

6. The endoscope forceps elevator according to claim 1, characterized in that: The cross-sectional profile of the retaining groove (22) is U-shaped, V-shaped, T-shaped, or arc-shaped.

7. The endoscope forceps elevator according to claim 1, characterized in that: In the above-mentioned endoscopic forceps elevator, the bottom arc diameter of the positioning bayonet (20) is 1 mm, so that the guide wire can fall into the positioning bayonet (20).

8. An endoscope head, comprising a head end seat (1) and a forceps lifter (2), characterized in that: The forceps elevator (2) is an endoscopic forceps elevator according to any one of claims 1 to 7; The hinged portion of the forceps lifter (2) is hinged to the head end seat (1) via a rotating arm (11); The head end seat (1) is provided with a receiving space capable of accommodating the forceps lifting device (2), an abutting fixing member (3) is provided in the receiving space, and a positioning surface (30) is provided on the abutting fixing member (3); After the clamp is lifted, the clamp lifting device (2) can cooperate with the positioning surface (30) to clamp and fix the positioned part.

9. The endoscope head portion according to claim 8, wherein: The positioning surface (30) is a plane, an arc-shaped surface or a stepped surface, and is capable of penetrating into the clamping portion (23) of the retaining groove (22) of the clamp lifter (2) to form a clamping structure therewith, wherein the clamping structure is used to clamp and fix the positioned part.

10. The endoscope head portion according to claim 9, wherein: The clamping gap of the clamping structure is less than or equal to 0.2 mm.

11. The endoscope head portion according to claim 8, wherein: The receiving space is a through hole structure, a blind hole structure or a through groove structure.

12. A duodenoscope system, characterized in that: The endoscope body of the duodenoscope system is provided with an endoscope head end according to any one of claims 8 to 11, wherein: The head end seat (1) in the end portion of the endoscope head is also provided with a nozzle (13) of a water vapor system, an objective lens (14) of an imaging system, and a lens (15) of an illumination system; The outer cover of the head end seat (1) is provided with a head end cap, and the head end cap is detachably connected to the head end seat (1).

Images