Endoscope bending overload protection mechanism and endoscope system
By employing a linkage between the active and driven components in the endoscope, damage to the bending section due to excessive force is avoided under overload conditions, thus solving the problem of easy damage to the bending section of the endoscope and improving the durability of the equipment.
Patent Information
- Application Number
- CN202423030576.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2034-12-09
AI Technical Summary
The curved part of the endoscope is easily damaged by excessive force during operation, and existing technology cannot effectively avoid the problem of overload damage.
The active and driven components are connected by a linkage, and the linkage is disengaged under overload conditions to prevent relative sliding between the active and driven components and to prevent the transmission of overload force.
This effectively prevents damage to the curved part of the endoscope due to overload, protects the flexible part of the endoscope, and extends its service life.
Smart Images
Figure CN223773752U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of endoscope technology, and in particular to an endoscope bending overload protection mechanism and endoscope system. Background Technology
[0002] The flexible part of the endoscope can be controlled by a handle to bend up, down, left, and right. It is usually driven by a rotating wheel and a snake-shaped steel wire, which in turn pulls the flexible part to produce the bending motion. During the procedure, different operators have different experiences, making it difficult to control the force applied. This can easily lead to technical problems such as damage to the flexible part due to excessive force.
[0003] Existing technologies typically limit the degree of bending by restricting the range of motion of the handle. While this can alleviate the bending damage to the bent part to some extent, it is still difficult to avoid the technical problem of overload caused by excessive or forceful operation, which cannot prevent the bent part from being damaged due to excessive operation. Utility Model Content
[0004] The purpose of this invention is to provide an endoscope bending overload protection mechanism and endoscope system to alleviate the technical problem of easy overload during endoscope bending operation in the prior art.
[0005] In the first aspect, the endoscope bending overload protection mechanism provided by this utility model includes: an active component, a driven component, and a linkage component;
[0006] One of the active component and the driven component is equipped with the linkage member, and the other of the active component and the driven component is adapted to the linkage member so that the active component is connected to the driven component via the linkage member.
[0007] Under overload conditions, the linkage disengages from the driving component or the driven component, allowing the driving component and the driven component to slide relative to each other.
[0008] In conjunction with the first aspect, this utility model provides a first possible implementation of the first aspect, wherein the linkage includes a ball-head plunger, and the ball-head plunger is connected to the active component;
[0009] The driven component is provided with a ball head recess that is adapted to the ball head plunger.
[0010] In conjunction with the first aspect, this utility model provides a second possible implementation of the first aspect, wherein the active component includes: a lever, a transmission pin, and an active wheel;
[0011] The lever and the drive wheel are connected by the transmission pin, and the lever, the transmission pin and the drive wheel are circumferentially limited around the transmission pin;
[0012] The driven component is pivotally connected to the transmission pin, the linkage is mounted on the drive wheel, and the linkage is spaced apart from the axis of the drive wheel.
[0013] In conjunction with the second possible implementation of the first aspect, this utility model provides a third possible implementation of the first aspect, wherein the lever has a first swing arm and a second swing arm;
[0014] The transmission pin passes through the driving wheel and the driven component, with one end of the transmission pin connected to the first swing arm and the other end connected to the second swing arm.
[0015] In conjunction with the second possible implementation of the first aspect, this utility model provides a fourth possible implementation of the first aspect, wherein the driven component includes: a housing and a winding wheel;
[0016] The winding wheel is rotatably connected to the housing, and the winding wheel is adapted to the linkage component.
[0017] In conjunction with the fourth possible implementation of the first aspect, this utility model provides a fifth possible implementation of the first aspect, wherein the winding wheel includes: a rotating wheel and a pressure plate;
[0018] The rotating wheel is rotatably connected to the housing, the pressure plate is connected to the rotating wheel, and the pressure plate is adapted to the linkage component.
[0019] In conjunction with the fifth possible implementation of the first aspect, the present invention provides a sixth possible implementation of the first aspect, wherein the driven component further includes a fastener connected to the transmission pin, and the wheel is pressed between the fastener and the housing.
[0020] In conjunction with the sixth possible implementation of the first aspect, this utility model provides a seventh possible implementation of the first aspect, wherein the transmission pin includes a pin body and a bushing sleeved on the pin body;
[0021] The pin has a polygonal cross-section and is adapted to the drive wheel.
[0022] The fastener is threaded into the bushing.
[0023] In conjunction with the fifth possible implementation of the first aspect, this utility model provides an eighth possible implementation of the first aspect, wherein the rotating wheel is provided with a groove extending along the circumference and a snake-bone steel wire is wound in the groove;
[0024] The housing is provided with guide grooves for accommodating the snake-bone steel wire.
[0025] Secondly, the endoscope system provided by this utility model is equipped with the endoscope bending overload protection mechanism described in the first aspect.
[0026] The present invention provides the following beneficial effects: one of the active component and the driven component is equipped with a linkage component, and the other of the active component and the driven component is adapted to the linkage component, so that the active component is connected to the driven component via the linkage component. In the overload state, the linkage component disengages from the active component or the driven component, so that the active component and the driven component slide relative to each other, which can avoid overload of the operating force and thus avoid damage to the curved part of the endoscope.
[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0028] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0029] Figure 1 Exploded view of the endoscope bending overload protection mechanism provided in this embodiment of the utility model;
[0030] Figure 2 A cross-sectional view of the endoscope bending overload protection mechanism provided in an embodiment of this utility model;
[0031] Figure 3 A schematic diagram of the winding wheel of the endoscope bending overload protection mechanism provided in this embodiment of the utility model.
[0032] Icons: 100 - Driving component; 110 - Lever; 111 - First swing arm; 112 - Second swing arm; 113 - First bolt; 114 - Second bolt; 120 - Transmission pin; 121 - Pin body; 122 - Bushing; 130 - Driving wheel; 200 - Driven component; 201 - Ball head recess; 210 - Housing; 211 - Guide groove; 220 - Wire winding wheel; 221 - Rotary wheel; 222 - Pressure plate; 230 - Fastener; 300 - Linkage component; 400 - Snake-bone steel wire. Detailed Implementation
[0033] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Physical quantities in formulas, unless otherwise specified, should be understood as basic quantities of the International System of Units (SI) base units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.
[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0036] like Figure 1 and Figure 2 As shown, the endoscope bending overload protection mechanism provided in this embodiment of the present invention includes: an active component 100, a driven component 200, and a linkage 300; one of the active component 100 and the driven component 200 is equipped with the linkage 300, and the other of the active component 100 and the driven component 200 is adapted to the linkage 300, so that the active component 100 is connected to the driven component 200 via the linkage 300; in the overload state, the linkage 300 disengages from the active component 100 or the driven component 200, so that the active component 100 and the driven component 200 slide relative to each other.
[0037] The linkage 300 can be made elastic, or one of the driving component 100 and the driven component 200 can be made elastic or have a margin of movement. When the driving force of the driving component 100 is overloaded, the linkage 300 can slide away from the driving component 100 or the driven component 200, and the driving component 100 and the driven component 200 slide relative to each other, thereby preventing the driving force from being transmitted downstream to the driven component 200.
[0038] like Figure 1 , Figure 2 and Figure 3 As shown in this embodiment of the invention, the linkage 300 includes a ball-head plunger connected to the driving component 100; the driven component 200 has a ball-head recess 201 adapted to the ball-head plunger. In normal rotation, the end of the ball-head plunger engages with the ball-head recess 201, at which point the driving component 100 transmits power to drive the driven component 200 via the linkage 300; when the driving force is overloaded, the end of the ball-head plunger slides out of the ball-head recess 201, and the driven component 200 slips relative to the driving component 100.
[0039] In an optional implementation, ball plungers with different retraction forces can be set, thereby adjusting the overload setting force.
[0040] like Figure 1 and Figure 2 As shown, the active component 100 includes: a lever 110, a transmission pin 120, and an active wheel 130; the lever 110 and the active wheel 130 are connected by transmission pin 120, and the lever 110, transmission pin 120, and active wheel 130 are circumferentially limited around the transmission pin 120; the driven component 200 is pivotally connected to the transmission pin 120, and the linkage 300 is installed on the active wheel 130, and the linkage 300 and the active wheel 130 are spaced apart on their axes.
[0041] The linkage 300 is located off-axis of the drive wheel 130. The lever 110 drives the drive wheel 130 to rotate via the transmission pin 120. The drive wheel 130 drives the driven component 200 to rotate via the linkage 300.
[0042] like Figure 1 and Figure 2 As shown, the lever 110 has a first swing arm 111 and a second swing arm 112; the transmission pin 120 passes through the driving wheel 130 and the driven component 200, and one end of the transmission pin 120 is connected to the first swing arm 111 by a first bolt 113, and the other end is connected to the second swing arm 112 by a second bolt 114.
[0043] Furthermore, the driven component 200 includes: a housing 210 and a winding wheel 220; the winding wheel 220 is rotatably connected to the housing 210, and the winding wheel 220 is adapted to the linkage 300 so that the linkage 300 can transmit the power of the driving component 100 to the winding wheel 220.
[0044] like Figure 1 , Figure 2 and Figure 3 As shown, the winding wheel 220 includes a rotating wheel 221 and a pressure plate 222. The rotating wheel 221 is rotatably connected to the housing 210, and the pressure plate 222 is connected to the rotating wheel 221, and the pressure plate 222 is adapted to the linkage 300. The pressure plate 222 and the rotating wheel 221 are connected by screws to achieve synchronous rotation, and the surface of the pressure plate 222 is provided with a ball-head recess 201 adapted to the linkage 300.
[0045] In an optional embodiment, the driven component 200 further includes a fastener 230 connected to the drive pin 120, and the wheel 221 is pressed between the fastener 230 and the housing 210.
[0046] Specifically, the transmission pin 120 includes a pin body 121 and a bushing 122 sleeved on the pin body 121. The pin body 121 is rotatable relative to the bushing 122. The cross-section of the pin body 121 is polygonal, and the pin body 121 is adapted to the drive wheel 130, thereby limiting the pin body 121 and the drive wheel 130 circumferentially and rotating synchronously. The fastener 230 is threadedly engaged with the bushing 122. One end of the bushing 122 abuts against the outside of the housing 210, and the other end passes through the housing 210, the rotating wheel 221, and the pressure plate 222. The fastener 230 is connected to the bushing 122 by a threaded engagement, and locking the fastener 230 can press the rotating wheel 221 tightly.
[0047] like Figure 1 As shown, the rotating wheel 221 has a groove extending along its circumference, and a snake-bone steel wire 400 is wound in the groove; the housing 210 has a guide groove 211 for accommodating the snake-bone steel wire 400. When the rotating wheel 221 rotates, it can wind or unwind the snake-bone steel wire 400, and the snake-bone steel wire 400 can slide smoothly along the guide groove 211. The snake-bone steel wire 400 is connected to the bending part of the endoscope, and the bending part is driven to bend by the pull of the snake-bone steel wire 400.
[0048] The endoscope system provided in this embodiment of the present invention is equipped with the endoscope bending overload protection mechanism described in the above embodiments.
[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. An endoscope bending overload protection mechanism, characterized in that, include: Active component (100), driven component (200), and linkage component (300); One of the active component (100) and the driven component (200) is equipped with the linkage (300), and the other of the active component (100) and the driven component (200) is adapted to the linkage (300) so that the active component (100) is connected to the driven component (200) via the linkage (300); Under overload conditions, the linkage (300) disengages from the driving component (100) or the driven component (200) to allow the driving component (100) and the driven component (200) to slide relative to each other.
2. The endoscope bending overload protection mechanism according to claim 1, characterized in that, The linkage (300) includes a ball-head plunger, which is connected to the active component (100); The driven component (200) is provided with a ball head recess (201) adapted to the ball head plunger.
3. The endoscope bending overload protection mechanism according to claim 1 or 2, characterized in that, The active component (100) includes: a lever (110), a transmission pin (120), and an active wheel (130); The lever (110) and the drive wheel (130) are connected by the transmission pin (120), and the lever (110), the transmission pin (120) and the drive wheel (130) are circumferentially limited around the transmission pin (120); The driven component (200) is pivotally connected to the transmission pin (120), the linkage component (300) is mounted on the drive wheel (130), and the linkage component (300) and the drive wheel (130) are spaced apart on their axes.
4. The endoscope bending overload protection mechanism according to claim 3, characterized in that, The lever (110) has a first swing arm (111) and a second swing arm (112); The drive pin (120) passes through the drive wheel (130) and the driven component (200), and one end of the drive pin (120) is connected to the first swing arm (111) and the other end is connected to the second swing arm (112).
5. The endoscope bending overload protection mechanism according to claim 3, characterized in that, The driven component (200) includes: a housing (210) and a winding wheel (220); The winding wheel (220) is rotatably connected to the housing (210), and the winding wheel (220) is adapted to the linkage (300).
6. The endoscope bending overload protection mechanism according to claim 5, characterized in that, The winding wheel (220) includes: a rotating wheel (221) and a pressure plate (222); The rotating wheel (221) is rotatably connected to the housing (210), the pressure plate (222) is connected to the rotating wheel (221), and the pressure plate (222) is adapted to the linkage (300).
7. The endoscope bending overload protection mechanism according to claim 6, characterized in that, The driven component (200) also includes a fastener (230) connected to the drive pin (120), and the wheel (221) is pressed between the fastener (230) and the housing (210).
8. The endoscope bending overload protection mechanism according to claim 7, characterized in that, The transmission pin (120) includes a pin body (121) and a bushing (122) sleeved on the pin body (121); The pin (121) has a polygonal cross-section and is adapted to the drive wheel (130); The fastener (230) is threadedly engaged with the bushing (122).
9. The endoscope bending overload protection mechanism according to claim 6, characterized in that, The wheel (221) is provided with a groove extending along the circumference and a snake-bone steel wire (400) is wound in the groove; The housing (210) is provided with a guide groove (211) for receiving the snake-shaped steel wire (400).
10. An endoscope system, characterized in that, The endoscope system is equipped with an endoscope bending overload protection mechanism as described in any one of claims 1-9.