Endoscope operation part

Abstract

The utility model discloses an endoscope operating part which comprises a mounting seat, a ball shaft, a shifting piece, a sealing plate and a shaft rod, the ball shaft is connected to the mounting seat, and the ball shaft and the mounting seat are coaxially arranged; the shifting piece comprises a spherical shell and a shifting rod, the shifting rod is connected to one end of the spherical shell, a spherical groove is formed in the other end of the spherical shell and covers the spherical part of the spherical shaft, and the spherical shell can rotate universally relative to the spherical shaft; the sealing plate is connected to the other end of the ball shell, a receding opening is formed in the middle of the sealing plate and used for receding the rod part of the ball journal, and the sealing plate is used for packaging the ball part of the ball journal in the ball groove; the shaft rods are rotationally connected to the spherical shell and are evenly distributed in the circumferential direction of the spherical shell, the rotating axes of the shaft rods extend in the radial direction of the spherical shell, the shaft rods are used for being connected with a traction steel wire of an insertion part of the endoscope, and the traction force of the traction steel wire is counteracted through rotation of the shaft rods, so that in the working process, the rotation of the shaft rods is reduced; the mechanical action of the deflector rod is more reasonable when the deflector rod controls a single direction, and the operation is more labor-saving.

Description

Technical Field

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

[0002] Endoscopes generally have an operating section and a bending section. The operating section is mainly used to operate the bending section. The bending section is mainly achieved by pulling the traction wire inside the bending section.

[0003] Currently, there is an endoscope with a universal adjustment mechanism that uses a universal ball joint to pull the traction wire in all directions. However, in this type of endoscope, the traction wire is directly connected to the ball shell. This means that when adjusting in one direction, the wire in the vertical direction on the other side also acts as a restraint, resulting in excessive adjustment force and making fine adjustments difficult. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an endoscope operating unit that solves the problems of excessive adjustment force and inaccurate adjustment required by previous universal adjustment operating units.

[0005] An endoscope operating part according to an embodiment of the present invention includes a mounting base, a ball shaft, a toggle member, a sealing plate, and a shaft. The ball shaft is connected to the mounting base and is coaxially arranged with the mounting base. The toggle member includes a ball shell and a lever. The lever is connected to one end of the ball shell, and the other end of the ball shell is provided with a ball groove. The ball groove covers the ball portion of the ball shaft, and the ball shell can rotate omnidirectionally relative to the ball shaft. The sealing plate is connected to the other end of the ball shell, and the middle part of the sealing plate is provided with a clearance opening. The clearance opening is used to avoid the rod portion of the ball shaft, and the sealing plate is used to encapsulate the ball portion of the ball shaft in the ball groove. The shaft is rotatably connected to the ball shell, and four shafts are provided. The four shafts are evenly distributed around the circumference of the ball shell, and the rotation axis of the shaft extends radially along the ball shell. The shaft is used to connect the traction wire of the endoscope insertion part.

[0006] An endoscope operating unit according to an embodiment of the present invention has at least the following beneficial effects: the shaft is rotatably connected to the spherical shell, and a traction wire is also connected to the shaft. The four shafts are arranged in a cross shape. When the lever is turned in one direction, the shaft in another perpendicular direction will rotate to counteract the restraining effect of the traction wire, reducing the operating force and improving the operating accuracy. During operation, the traction wire connected to the shafts perpendicular to both sides of the working shaft provides a downward force to make it rotate, so that the traction wire connected to it always remains vertically downward. The rotation of the shaft counteracts the restraining force of the traction wire, making the mechanical action of the lever when controlling a single direction more reasonable, the operation more labor-saving, smoother, and more precise. At the same time, it avoids the bending of the serpentine bone from getting stuck due to the simultaneous application of forces in three directions, improving the reliability, durability, and accuracy of operation.

[0007] According to some embodiments of this utility model, a limiting plate is also included. Four connecting platforms are provided on the outer wall of the spherical shell. A slot is provided in the middle of the connecting platform. A rod is provided in the slot. A rotating hole is provided at one end of the shaft. One end of the shaft is inserted into the slot. The rotating hole is rotatably sleeved on the rod. The limiting plate is sleeved on the shaft. The limiting plate is connected to the connecting platform. The limiting plate is used to prevent the shaft from coming out of the slot. The detachable shaft facilitates timely replacement after the shaft is damaged. It also facilitates the separate production of the shaft and subsequent assembly.

[0008] According to some embodiments of this utility model, the limiting plate is threadedly connected to the connecting platform. The threaded connection structure is simple and convenient for operation and assembly.

[0009] According to some embodiments of this utility model, a bayonet is provided at the other end of the shaft. The bayonet is used to connect the traction wire of the endoscope insertion part, and the bayonet makes it more convenient to install the traction wire.

[0010] According to some embodiments of this utility model, the bayonet is Y-shaped. The open end of the Y-shaped bayonet is convenient for locking the traction steel wire, ensuring the convenience of installation. At the same time, the position of the traction steel wire can be adjusted on the bayonet, and the traction steel wire can be connected by welding.

[0011] According to some embodiments of the present invention, the sealing plate is arranged in an open ring shape, and the sealing plate is connected to the other end of the spherical shell by screw thread. The open ring shape reduces stress concentration during use, avoids breakage of the ring-shaped sealing plate, and also improves the ease of installation of the sealing plate.

[0012] According to some embodiments of this utility model, a sleeve is movably connected to the mounting base, the sleeve is arranged in a one-to-one correspondence with the shaft, a spring is sleeved on the sleeve, one end of the spring is connected to the sleeve, the other end of the spring is connected to the mounting base, and the sleeve is connected to a traction steel wire.

[0013] According to some embodiments of this utility model, the inner ring edge of the sealing plate is provided with a rounded chamfer structure. The chamfer surface of the rounded chamfer structure forms a predetermined angle α with the vertical axis, where α ≥ 60°. The rounded chamfer structure limits the angle and facilitates adjustment.

[0014] According to some embodiments of the present invention, a gripping part is provided at the end of the lever away from the ball shell. The gripping part is in the shape of an inverted cone, and the gripping part is convenient to hold and easy to operate.

[0015] According to some embodiments of this utility model, the ball shaft, the actuating element, the sealing plate, and the shaft are all made of acetal steel. The acetal steel replaces the structure of metal or plastic with lubricating oil or bearings, resulting in higher reliability, higher lubricity, and better mechanical properties.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the endoscope operating part according to an embodiment of the present invention;

[0019] Figure 2 for Figure 1 The explosion of the endoscope operating unit shown Figure 1 ;

[0020] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0022] Figure 5 for Figure 2 Enlarged view of point C in the middle;

[0023] Figure 6 for Figure 1 The explosion of the endoscope operating unit shown Figure 2 .

[0024] Mounting base 100, spring 110;

[0025] Ball shaft 200, actuating element 300, ball housing 310, ball groove 311;

[0026] Connector 312, slot 312a, plug 312b;

[0027] lever 320, grip 321;

[0028] 400mm sealing plate, 410mm clearance opening, 420mm rounded chamfer structure;

[0029] Shaft 500, rotating hole 510, bayonet 520;

[0030] Limit plate 600. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first" and "second" are used, they are only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0034] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0035] Reference Figures 1 to 6An endoscope operating unit includes a mounting base 100, a ball shaft 200, an actuating element 300, a sealing plate 400, and a shaft 500. The ball shaft 200 is connected to the mounting base 100 and is coaxially arranged with the mounting base 100. The actuating element 300 includes a ball housing 310 and a lever 320. The lever 320 is connected to one end of the ball housing 310, and the other end of the ball housing 310 is provided with a ball groove 311, which covers the ball portion of the ball shaft 200. The ball housing 310 can rotate omnidirectionally relative to the ball shaft 200. The sealing plate... 400 is connected to the other end of the spherical shell 310. The middle part of the sealing plate 400 is provided with a clearance opening 410, which is used to avoid the rod part of the ball shaft 200. The sealing plate 400 is used to encapsulate the ball part of the ball shaft 200 in the ball groove 311. The shaft 500 is rotatably connected to the spherical shell 310. There are four shafts 500. The four shafts 500 are evenly distributed around the circumference of the spherical shell 310. The rotation axis of the shafts 500 extends radially along the spherical shell 310. The shafts 500 are used to connect the traction wire of the endoscope insertion part.

[0036] It should be understood that the shaft 500 is rotatably connected to the spherical shell 310. The shaft 500 also connects to a traction steel wire. The four shafts 500 are arranged in a cross shape. When the lever is moved in one direction, the shaft 500 in another perpendicular direction will rotate to counteract the restraining effect of the traction steel wire, reducing operating force and improving operating accuracy. During operation, the traction steel wire connected to the shafts 500 perpendicular to both sides of the working shaft 500 provides a downward force to rotate it, ensuring that the connected traction steel wire remains vertically downward. The rotation of the shafts 500 counteracts the restraining force of the traction steel wire, making the mechanical action of the lever 320 more reasonable when controlling a single direction, resulting in easier, smoother, and more precise operation. It also avoids the bending of the lever due to the simultaneous application of forces in three directions, preventing jamming and improving reliability, durability, and accuracy during operation.

[0037] It should be noted that this utility model adopts a complete double-ball universal joint design, and the encapsulation base plate adopts a rounded arc design, so that the one-way operating angle of its main control rod is 0-60° from the ball center axis in the operating direction, realizing large-angle control. Due to the adoption of a complete double-ball design, the contact surface of the double balls is larger, making the control stroke more precise, more stable, more reliable, and more lubricating. This utility model uses a new material, acetal, which is short for polyacetal, also known as polyoxymethylene (POM). It is a crystalline thermoplastic plastic. The properties of acetal are crystalline thermoplastic plastic with a distinct melting point between 165 and 175 degrees Celsius. Its properties are closest to those of metal, and it is generally called plastic steel. CE-Steel has a large molding shrinkage rate, high mechanical strength and rigidity, the highest fatigue strength, good environmental resistance, good resistance to organic solvents, strong resistance to repeated impacts, a wide operating temperature range, good electrical properties, good resilience, self-lubrication, good wear resistance, and excellent dimensional stability. It has replaced the structure of metal or plastic structures with lubricants or bearings, and has higher reliability, higher lubricity, and better mechanical properties.

[0038] It should be understood that in the horizontal components controlling the four directions, the present invention uses a shaft 500 separately connected to the ball shell 310. During operation, the lever 320 applies a reverse force, which acts on the working shaft 500 to form an upward pulling force, pulling the traction wire in one direction, causing the snake bone to retract. The retraction stroke causes the curved snake bone to bend at an angle. At the same time, due to the upward angle of the ball shell 310, the shafts 500 perpendicular to both sides of the working shaft 500 are also driven upward. The so-called working shaft 500 is the shaft 500 used in one direction, and the other pair is the non-working shaft 500. In a conventional design, three traction wires would be pulled at the same time. When working at a large angle, the operating force would be greatly increased, exceeding the strength range of a normal person's thumb. The traction wires connected to the non-working shafts 500 perpendicular to both sides of the working shaft 500 are always subjected to a downward force. In this utility model structure, utilizing the principle that the position of the ball shaft does not change during the rotation of the ball shell 310, the traction wires connected to the shafts 500 perpendicular to both sides of the working shaft 500 provide a downward force to achieve rotation, keeping the traction wires connected to the non-working shafts 500 always vertically downward. The upward force of the shafts 500 perpendicular to both sides of the working shaft 500 is counteracted by rotation. This allows the control rod to control the traction wire in a single direction during operation, making the mechanics more reasonable, the operation more labor-saving, smoother, and more precise. At the same time, it avoids the bending snake bone getting stuck due to the simultaneous application of forces in three directions, improving the reliability, durability, and accuracy of operation.

[0039] Understandably, during the production process, the entire ball joint can be used as a standard part. By changing the specifications of the 500 shaft, the control stroke range can be altered, enabling standardized production. Parts can be replaced to control the stroke, making it suitable for endoscopes of various diameters. This makes production simpler, more accurate, and more standardized.

[0040] Reference Figure 1 and Figure 2 It also includes a limiting plate 600. Four connecting platforms 312 are provided on the outer wall of the spherical shell 310. A slot 312a is provided in the middle of the connecting platform 312. A rod 312b is provided in the slot 312a. A rotating hole 510 is provided at one end of the shaft 500. One end of the shaft 500 is inserted into the slot 312a. The rotating hole 510 is rotatably sleeved on the rod 312b. The limiting plate 600 is sleeved on the shaft 500 and connected to the connecting platform 312. The limiting plate 600 is used to prevent the shaft 500 from coming out of the slot 312a. The detachable shaft 500 is provided to facilitate timely replacement after the shaft 500 is damaged. It also facilitates the separate production of the shaft 500 and facilitates subsequent assembly.

[0041] In some embodiments, the limiting plate 600 is threadedly connected to the connecting table 312. The threaded connection structure is simple and convenient for operation and assembly.

[0042] In some embodiments, the other end of the shaft 500 is provided with a bayonet 520, which is used to connect the traction wire of the endoscope insertion part. The bayonet 520 makes it more convenient to install the traction wire.

[0043] Reference Figure 1 and Figure 3 The bayonet 520 is Y-shaped. The open end of the Y-shaped bayonet 520 is easy to hold the traction steel wire, ensuring the convenience of installation. At the same time, the position of the traction steel wire can be adjusted on the bayonet 520. The traction steel wire can be connected by welding. It can be understood that the traction steel wire can be welded into the bayonet 520 or interference-fitted into the bayonet 520.

[0044] Reference Figure 1 and Figure 2 The sealing plate 400 is set in an open ring shape. The sealing plate 400 is connected to the other end of the spherical shell 310 by screw threads. The inner ring edge of the sealing plate 400 is provided with a rounded corner structure. The open ring shape reduces stress concentration during use, avoids breakage of the ring-shaped sealing plate 400, and also improves the ease of installation of the sealing plate 400.

[0045] In some embodiments, a sleeve 120 is movably connected to the mounting base 100, with each sleeve 120 corresponding to a shaft 500. A spring 110 is fitted onto the sleeve 120, with one end of the spring 110 connected to the sleeve 120 and the other end connected to the mounting base 100. The sleeve 120 is connected to a traction wire, and the sleeve is mounted on the wire rope, matching the diameter of the spring. During operation, the upward tension of the traction wire compresses the spring 110. When the shaft 500 relaxes, the spring 110 provides a counterforce to assist in resetting, making it more convenient to use and ergonomic. The sleeve makes the spring's stroke and compression more accurate, providing a more stable counterforce to assist in the resetting of the control rod.

[0046] In some embodiments, the spring 110 is detachably connected to the mounting base 100.

[0047] Reference Figure 2 and Figure 5 The inner ring edge of the sealing plate 400 is provided with a rounded chamfer structure 420. The chamfer surface of the rounded chamfer structure 420 forms a predetermined angle α with the vertical axis, where α ≥ 60°. The rounded chamfer structure 420 limits the angle and facilitates adjustment.

[0048] In some embodiments, the end of the lever 320 away from the ball housing 310 is provided with a grip portion 321, which is in the shape of an inverted cone. The grip portion 321 is convenient to hold and easy to operate.

[0049] In some embodiments, the ball shaft 200, the actuating element 300, the sealing plate 400, and the shaft 500 are all made of acetal steel. Acrylic steel replaces the structure of metal or plastic with lubricant or bearings, resulting in higher reliability, better lubricity, and superior mechanical properties. It is understood that the entire operating part can be made of acetal steel.

[0050] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An endoscope operating unit, characterized in that, include: Mounting base (100); A ball shaft (200) is connected to the mounting base (100), and the ball shaft (200) is coaxially arranged with the mounting base (100); A toggle element (300) includes a spherical shell (310) and a lever (320). The lever (320) is connected to one end of the spherical shell (310), and the other end of the spherical shell (310) is provided with a ball groove (311). The ball groove (311) covers the ball portion of the ball shaft (200), and the spherical shell (310) can rotate omnidirectionally relative to the ball shaft (200). A sealing plate (400) is connected to the other end of the ball shell (310). A clearance opening (410) is provided in the middle of the sealing plate (400). The clearance opening (410) is used to avoid the rod part of the ball shaft (200). The sealing plate (400) is used to encapsulate the ball part of the ball shaft (200) in the ball groove (311). A shaft (500) is rotatably connected to the spherical shell (310). Four shafts (500) are provided, and the four shafts (500) are evenly distributed around the circumference of the spherical shell (310). The rotation axis of the shaft (500) extends radially along the spherical shell (310). The shaft (500) is used to connect the traction wire of the endoscope insertion part.

2. The endoscope operating unit according to claim 1, characterized in that: It also includes a limiting plate (600). Four connecting platforms (312) are provided on the outer wall of the spherical shell (310). A slot (312a) is provided in the middle of the connecting platform (312). A plug rod (312b) is provided in the slot (312a). A rotating hole (510) is provided at one end of the shaft (500). One end of the shaft (500) is inserted into the slot (312a). The rotating hole (510) is rotatably sleeved on the plug rod (312b). The limiting plate (600) is sleeved on the shaft (500). The limiting plate (600) is connected to the connecting platform (312). The limiting plate (600) is used to prevent the shaft (500) from coming out of the slot (312a).

3. An endoscope operating unit according to claim 2, characterized in that: The limiting plate (600) is threadedly connected to the connecting platform (312).

4. An endoscope operating unit according to claim 3, characterized in that: The other end of the shaft (500) is provided with a bayonet (520), which is used to connect the traction wire of the endoscope insertion part.

5. An endoscope operating unit according to claim 4, characterized in that: The bayonet (520) is Y-shaped.

6. An endoscope operating unit according to claim 1, characterized in that: The sealing plate (400) is arranged in an open ring shape, and the sealing plate (400) is threadedly connected to the other end of the spherical shell (310) by screws.

7. An endoscope operating unit according to claim 1, characterized in that: The inner ring edge of the sealing plate (400) is provided with a rounded chamfer structure (420), and the chamfer surface of the rounded chamfer structure (420) forms a predetermined angle α with the vertical axis, where α ≥ 60°.

8. An endoscope operating unit according to claim 1, characterized in that: A sleeve (120) is movably connected to the mounting base (100). The sleeve (120) is configured to correspond one-to-one with the shaft (500). A spring (110) is sleeved on the sleeve (120). One end of the spring (110) is connected to the sleeve (120), and the other end of the spring (110) is connected to the mounting base (100). The sleeve (120) is connected to a traction steel wire.

9. An endoscope operating unit according to claim 1, characterized in that: The lever (320) has a grip (321) at the end away from the spherical shell (310), and the grip (321) is in the shape of an inverted cone.

10. An endoscope operating unit according to any one of claims 1 to 9, characterized in that: The ball shaft (200), the actuating element (300), the sealing plate (400), and the shaft (500) are all made of P-type steel.

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