Endoscope bending overload protection mechanism and endoscope system

Abstract

The invention provides an endoscope bending overload protection mechanism and an endoscope system, and relates to the technical field of endoscopes, the endoscope bending overload protection mechanism provided by the invention comprises a driving part, a driven part and a linkage part; one of the driving part and the driven part is provided with a linkage part, and the other one of the driving part and the driven part is matched with the linkage part, so that the driving part is in transmission connection with the driven part through the linkage part; in the overload state, the linkage piece is separated from the driving component or the driven component, so that the driving component and the driven component slide relatively, overload of operation force can be avoided, and damage to the bent part of the endoscope is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of endoscopes, and in particular to an endoscope bending overload protection mechanism and an endoscope system. Background Art

[0002] The flexible portion of an endoscope can be bent up, down, left, and right using an operating handle. Typically, a rotating wheel drives a serpentine wire, which pulls the flexible portion to bend. During surgery, different operators experience varying degrees of success, making it difficult to control the force applied. This can lead to technical issues such as damage to the flexible portion caused by excessive force.

[0003] In the existing technology, the degree of bending is usually limited by limiting the range of motion of the handle. Although this has a certain effect in alleviating the bending damage of the bending part, it is still difficult to avoid the force overload caused by excessive and violent operation force, and the technical problem of damage to the bending part due to excessive operation force cannot be avoided. Summary of the Invention

[0004] The object of the present invention is to provide an endoscope bending overload protection mechanism and an endoscope system to alleviate the technical problem in the prior art that the endoscope bending operation force is easily overloaded.

[0005] In a first aspect, the present invention provides an endoscope bending overload protection mechanism, comprising: 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 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 through the linkage component;

[0007] In an overload state, the linkage member is separated from the active component or the driven component, so that the active component and the driven component slide relative to each other.

[0008] In combination with the first aspect, the present invention provides a first possible implementation manner of the first aspect, wherein the linkage member includes a ball plunger, and the ball plunger is connected to the active component;

[0009] The driven component is provided with a ball head recess adapted to the ball head plunger.

[0010] In combination with the first aspect, the present invention provides a second possible implementation of the first aspect, wherein the active component includes: a shift lever, a transmission pin, and a driving wheel;

[0011] The shifting rod and the driving wheel are connected to each other through the transmission pin, and the shifting rod, the transmission pin and the driving wheel are circumferentially limited around the transmission pin;

[0012] The driven component is pivotally connected to the transmission pin, the linkage member is installed on the driving wheel, and the linkage member is spaced apart from the axis of the driving wheel.

[0013] In combination with the second possible implementation of the first aspect, the present invention provides a third possible implementation of the first aspect, wherein the shift lever has a first swing arm and a second swing arm;

[0014] The transmission pin passes through the driving wheel and the driven component, and one end of the transmission pin is connected to the first swing arm, and the other end is connected to the second swing arm.

[0015] In combination with the second possible implementation of the first aspect, the present invention 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 shell, and the winding wheel is adapted to the linkage component.

[0017] In combination with the fourth possible implementation of the first aspect, the present invention 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 member.

[0019] In combination 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 combination with the sixth possible implementation manner of the first aspect, the present invention provides a seventh possible implementation manner of the first aspect, wherein the transmission pin includes a pin body and a sleeve sleeved on the pin body;

[0021] The cross section of the pin body is configured as a polygon, and the pin body is adapted to the driving wheel;

[0022] The fastener is threadably matched with the sleeve.

[0023] In combination with the fifth possible implementation manner of the first aspect, the present invention provides an eighth possible implementation manner of the first aspect, wherein the rotating wheel is provided with a groove extending along the circumference, and a serpentine steel wire is wound in the groove;

[0024] The housing is provided with a guide groove for accommodating the snake-bone steel wire.

[0025] In a second aspect, the present invention provides an endoscope system equipped with the endoscope bending overload protection mechanism described in the first aspect.

[0026] The embodiments of the present invention bring about the following beneficial effects: one of the active component and the driven component is installed with a linkage, and the other of the active component and the driven component is adapted to the linkage, so that the active component is connected to the driven component through the linkage, and in an overload state, the linkage is disengaged 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 operating force and thus avoid damage to the curved part of the endoscope.

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in related technologies, the following briefly introduces the drawings required for use in the specific embodiments or related technical descriptions. Obviously, the drawings described below are 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.

[0029] Figure 1 An exploded view of an endoscope bending overload protection mechanism provided by an embodiment of the present invention;

[0030] Figure 2 A cross-sectional view of an endoscope bending overload protection mechanism provided by an embodiment of the present invention;

[0031] Figure 3 Schematic diagram of the winding wheel of the endoscope bending overload protection mechanism provided in an embodiment of the present invention.

[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 pulley; 200 - driven component; 201 - ball head pit; 210 - housing; 211 - guide groove; 220 - winding wheel; 221 - rotating wheel; 222 - pressure plate; 230 - fastener; 300 - linkage; 400 - snake-bone wire. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Physical quantities in formulas, unless separately marked, should be understood as basic quantities of the International System of Units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation or integration.

[0035] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0036] like Figure 1 and Figure 2 As shown, the endoscope bending overload protection mechanism provided by an embodiment of the present invention includes: an active component 100, a driven component 200 and a linkage component 300; one of the active component 100 and the driven component 200 is installed with the linkage component 300, and the other of the active component 100 and the driven component 200 is adapted to the linkage component 300, so that the active component 100 is connected to the driven component 200 through the linkage component 300; in an overload state, the linkage component 300 is separated 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 active component 100 and the driven component 200 can be made elastic or have a movable margin. When the driving force of the active component 100 is overloaded, the linkage 300 can slide away from the active component 100 or the driven component 200, and the active 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 present invention, the linkage member 300 includes a ball plunger connected to the active component 100; the driven component 200 is provided with a ball recess 201 that mates with the ball plunger. During normal rotation, the end of the ball plunger engages with the ball recess 201, and the active component 100 transmits power through the linkage member 300 to drive the driven component 200. When the driving force is overloaded, the end of the ball plunger slides out of the ball recess 201, causing the driven component 200 to slip relative to the active component 100.

[0039] In an optional embodiment, a ball plunger with different retraction forces may be provided, thereby adjusting the overload setting force.

[0040] like Figure 1 and Figure 2 As shown, the active component 100 includes: a shift rod 110, a transmission pin 120 and a driving wheel 130; the shift rod 110 and the driving wheel 130 are connected by the transmission pin 120, and the shift rod 110, the transmission pin 120 and the driving 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 member 300 is installed on the driving wheel 130, and the linkage member 300 is spaced apart from the axis of the driving wheel 130.

[0041] The linkage member 300 is located at a position away from the axis of the driving wheel 130 . The shifting rod 110 drives the driving wheel 130 to rotate via the transmission pin 120 . The driving wheel 130 drives the driven component 200 to rotate via the linkage member 300 .

[0042] like Figure 1 and Figure 2 As shown, the shift 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 through a first bolt 113, and the other end is connected to the second swing arm 112 through 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 active component 100 to the winding wheel 220.

[0044] like Figure 1 、 Figure 2 and Figure 3As 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 pit 201 adapted to the linkage 300.

[0045] In an optional embodiment, the driven component 200 further includes a fastener 230 connected to the driving pin 120 , and the rotating wheel 221 is compressed between the fastener 230 and the housing 210 .

[0046] Specifically, the transmission pin 120 includes a pin body 121 and a sleeve 122 sleeved on the pin body 121. The pin body 121 is rotatable relative to the sleeve 122. The pin body 121 has a polygonal cross-section and mates with the driving wheel 130, thereby limiting the circumferential position of the pin body 121 and allowing them to rotate synchronously. The fastener 230 is threadedly engaged with the sleeve 122. One end of the sleeve 122 abuts the outside of the housing 210, while the other end passes through the housing 210, the rotating wheel 221, and the pressure plate 222. The fastener 230 is connected by a threaded engagement provided on the outside of the sleeve 122. Locking the fastener 230 compresses the rotating wheel 221.

[0047] like Figure 1 As shown, the rotating wheel 221 is provided with a groove extending along the circumference, and a serpentine wire 400 is wound in the groove; the housing 210 is provided with a guide groove 211 for accommodating the serpentine wire 400. When the rotating wheel 221 rotates, the serpentine wire 400 can be wound or released, and the serpentine wire 400 can slide smoothly along the guide groove 211, connecting to the bending portion of the endoscope through the serpentine wire 400, and the bending portion is driven by the traction of the serpentine wire 400.

[0048] The endoscope system provided by the embodiment of the present invention is equipped with the endoscope bending overload protection mechanism described in the above embodiment.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An endoscope bending overload protection mechanism, characterized in that: include: An active component (100), a driven component (200) and a linkage component (300); One of the active component (100) and the driven component (200) is equipped with the linkage member (300), and the other of the active component (100) and the driven component (200) is adapted to the linkage member (300), so that the active component (100) is transmission-connected to the driven component (200) via the linkage member (300); In an overload state, the linkage member (300) is separated 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.

2. The endoscope bending overload protection mechanism according to claim 1, characterized in that: The linkage member (300) comprises a ball plunger, and the ball plunger 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) comprises: a lever (110), a transmission pin (120) and an active wheel (130); The shifting rod (110) and the driving wheel disc (130) are connected in transmission via the transmission pin (120), and the shifting rod (110), the transmission pin (120) and the driving wheel disc (130) are circumferentially limited around the transmission pin (120); The driven component (200) is pivotally connected to the transmission pin (120), the linkage member (300) is installed on the driving wheel (130), and the linkage member (300) is spaced apart from the axis of the driving wheel (130).

4. The endoscope bending overload protection mechanism according to claim 3, characterized in that: The lever (110) comprises 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) 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) comprises: a housing (210) and a winding wheel (220); The wire winding wheel (220) is rotatably connected to the housing (210), and the wire winding wheel (220) is adapted to the linkage member (300).

6. The endoscope bending overload protection mechanism according to claim 5, characterized in that: The winding wheel (220) comprises: 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 member (300).

7. The endoscope bending overload protection mechanism according to claim 6, characterized in that: The driven component (200) further comprises a fastener (230) connected to the transmission pin (120), and the rotating 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) comprises a pin body (121) and a shaft sleeve (122) sleeved on the pin body (121); The cross section of the pin body (121) is configured as a polygon, and the pin body (121) is adapted to the driving wheel (130); The fastener (230) is threadably matched with the shaft sleeve (122).

9. The endoscope bending overload protection mechanism according to claim 6, characterized in that: The rotating 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 accommodating the snake-bone steel wire (400).

10. An endoscope system, characterized in that: The endoscope system is equipped with the endoscope bending overload protection mechanism according to any one of claims 1 to 9.

Images