Endoscope and endoscope system

Abstract

The utility model relates to the technical field of medical instruments, and provides an endoscope and an endoscope system.The endoscope comprises an operation part, the operation part comprises a driving part and a force transmission part, the driving part comprises a supporting piece, a rotating piece, a shifting rod piece and a connecting rod, the connecting rod is provided with a first end and a second end which are oppositely arranged, the first end is connected to the rotating piece, and the second end is connected to the force transmission part; the second end is connected to the force transmission part to drive the force transmission part to move in the force transmission direction, and the force transmission part is used for being connected with an executing mechanism; the minimum distance from the rotating center of the rotating piece to the connecting position of the first end and the rotating piece is D, the minimum distance from the connecting position of the second end and the force transmission part to the connecting position of the first end and the rotating piece is L, D is larger than or equal to 10 mm and smaller than or equal to 12 mm, and L is larger than or equal to 48 mm and smaller than or equal to 60 mm. According to the endoscope provided by the utility model, the lengths of D and L are limited, so that the force of stirring the stirring rod piece by fingers of medical personnel can be smaller, and the use process is easier.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular provides an endoscope and an endoscope system. Background Technology

[0002] Endoscopic examination is an important clinical diagnostic procedure. An endoscope typically consists of a connecting section, an operating section, and an insertion section connected in sequence. The connecting section connects to the light source unit of the endoscope system, the insertion section extends into the patient's body for image acquisition and observation, and the operating section is mainly used to control the insertion and withdrawal of instruments, the bending of the insertion section, the control of the lifting device, and the zooming of the lens image.

[0003] The crank-connecting rod operating mechanism is an important component of the endoscope. Rotating the lever in this mechanism pulls the internal transmission cable, which in turn pulls the lifting device or lens at the front of the insertion section, causing the lifting device to stand up or fall down, or to magnify or reduce the image. The crank-connecting rod mechanism of the endoscope's operating mechanism is operated by the physician's hand; that is, it is powered by manual pulling.

[0004] However, during the force transmission process of the entire mechanism, due to factors such as the pulling of the front-end mechanism, the lever of the operating part experiences greater resistance during the turning process, and the overall turning process is not smooth. Utility Model Content

[0005] The purpose of this invention is to provide an endoscope and endoscope system that solves the problem of high resistance and unsmooth operation of the lever in the operating part of the endoscope during use.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] In a first aspect, embodiments of this application provide an endoscope, including an operating part, the operating part including a driving part and a force transmission part, the driving part including a support member, a rotating member that rotates about the axis of the support member, a lever member disposed on the rotating member, and a connecting rod, the connecting rod having a first end and a second end disposed opposite to each other, the first end being connected to the rotating member, and the second end being connected to the force transmission part to drive the force transmission part to move along the force transmission direction, the force transmission part being used to connect to an actuator;

[0008] Wherein, the minimum distance from the rotation center of the rotating component to the connection position between the first end and the rotating component is D, and the minimum distance from the connection position between the second end and the force transmission part to the connection position between the first end and the rotating component is L, where 10mm≤D≤12mm, 48mm≤L≤60mm.

[0009] The beneficial effects of this utility model are as follows: The endoscope provided by this utility model works on the following principle: Medical personnel use their fingers to move a lever, which drives a rotating component to rotate around a support component. Simultaneously, the rotating component drives a connecting rod to move a power transmission unit along the direction of force transmission, ultimately controlling the actuator to perform corresponding actions. Because the lengths of D and L are limited, the force required for medical personnel to move the lever is relatively small, making the process easier.

[0010] In some embodiments, in the initial state of actuation, the extension direction of the lever is at an angle α to the force transmission direction, and in the extreme state of actuation, the extension direction of the lever is at an angle β to the force transmission direction, where 40°≤α≤60° and 50°≤β-α≤60°.

[0011] By adopting the above technical solution, the size of the included angle α and the size of the included angle β are limited to control the two position states of the lever, so that medical staff can flick it with their fingers.

[0012] In some embodiments, the connecting rod includes a first segment, a second segment, a third segment, and a fourth segment connected in sequence; in the initial state of actuation, the extension direction of the fourth segment is the same as the force transmission direction, the extension direction of the third segment forms an obtuse angle b with the extension direction of the fourth segment, the extension direction of the second segment forms an obtuse angle c with the extension direction of the third segment, and the extension direction of the first segment forms an obtuse angle d with the extension direction of the second segment.

[0013] By adopting the above technical solution, the connecting piece is divided into multiple segments, which facilitates the connecting rod to rotate with the rotating part, making the force transmission process smoother.

[0014] In some embodiments, under the extreme toggle state, the support member is provided with a slit edge, and the first rod segment abuts against the slit edge.

[0015] By adopting the above technical solution, the cut edge on the support member is used to create clearance space for the connecting rod, and when the first rod segment rotates with the rotating member, it abuts against the cut edge, thereby limiting the rotating member from continuing to rotate relative to the support member.

[0016] In some embodiments, the endoscope includes a first seal disposed between the support and the rotating member.

[0017] By adopting the above technical solution, the first sealing element is used to improve the waterproof sealing between the support and the rotating part.

[0018] In some embodiments, the endoscope includes a housing and a second seal, the second seal being disposed between the rotating member and the housing.

[0019] By adopting the above technical solution, the waterproof sealing between the outer shell and the rotating part is improved by using a second sealing element.

[0020] In some embodiments, the first static frictional force between the first seal and the rotating member and the support member is greater than the maximum rebound force of the force transmission part; or...

[0021] The second static friction force between the second seal and the rotating member and the housing is greater than the maximum rebound force of the force transmission part; or,

[0022] The sum of the first static friction force between the first seal and the rotating member and the supporting member and the second static friction force between the second seal and the rotating member and the housing is greater than the maximum rebound force of the force transmission part.

[0023] By adopting the above technical solution, the first static friction force and / or the second static friction force are greater than the maximum rebound force of the force transmission part to achieve stable suspension of the lever during the turning process, thereby enabling the actuator to maintain the current action.

[0024] In some embodiments, the endoscope further includes a resistance adjustment mechanism, which includes a bracket connected to the rotating member, a resistance adjustment elastic member disposed on the bracket, a friction pad disposed on the resistance adjustment elastic member, and an adjustment member movably connected to the bracket and abutting against the resistance adjustment elastic member. The adjustment member moves relative to the bracket to drive the friction pad on the resistance adjustment elastic member to abut against the support member.

[0025] By adopting the above technical solution, the static friction of the drive unit can be further increased by the added resistance adjustment mechanism to counteract the maximum rebound force of the force transmission unit, and finally the lever can be stably suspended in the middle of the movement.

[0026] In some embodiments, the resistance adjusting elastic member includes a fixed portion connected to the bracket and an elastic portion connected to the fixed portion. The elastic portion includes a deformation section and a connecting section connected to opposite sides of the deformation section. The friction pad is disposed on the connecting section, and the adjusting member abuts against the deformation section.

[0027] By adopting the above technical solution, the elastic part deforms in the deformation section under the abutting action of the adjusting member, so as to adjust the magnitude of the abutting force of the friction plate on the support member.

[0028] Secondly, embodiments of this application also provide an endoscope system, including a light source host, an image processing device, and the endoscope described above.

[0029] Understandably, the beneficial effects of the second aspect of this application can be referred to the beneficial effects stated in the first aspect, and will not be repeated here. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of an endoscope provided in an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the operating part of the endoscope provided in Embodiment 1 of the present invention;

[0033] Figure 3 A schematic diagram of the drive unit of the operating part of the endoscope provided in Embodiment 1 of this utility model in the initial state of being turned;

[0034] Figure 4 A schematic diagram of the drive unit of the operating part of the endoscope provided in Embodiment 1 of this utility model in the extreme state of the toggle limit;

[0035] Figure 5 A cross-sectional view of the drive section of the operating part of the endoscope provided in Embodiment 1 of this utility model;

[0036] Figure 6 A schematic diagram of the drive unit of the operating part of the endoscope provided in Embodiment 1 of this utility model from another angle;

[0037] Figure 7 A schematic diagram of the drive unit of the operating part of the endoscope provided in Embodiment 1 of this utility model from another angle;

[0038] Figure 8 for Figure 7 Cross-sectional view at point AA;

[0039] Figure 9 A schematic diagram of the support and rotating components of the drive unit of the endoscope's operating section according to Embodiment 1 of this utility model;

[0040] Figure 10 A schematic diagram showing the positional relationship between the connecting rod of the drive unit of the endoscope's operating part and the rotating component in the limit state of the toggle limit state;

[0041] Figure 11This is a cross-sectional view of the operating part of the endoscope provided in Embodiment 2 of this utility model;

[0042] Figure 12 for Figure 11 Enlarged view of point B in the middle;

[0043] Figure 13 This is another enlarged view of the operating part of the endoscope provided in Embodiment 2 of this utility model;

[0044] Figure 14 This is a schematic diagram of the structure of the movable part of the operating section of the endoscope provided in Embodiment 2 of this utility model;

[0045] Figure 15 This is a cross-sectional view of the operating part of the endoscope provided in Embodiment 3 of this utility model;

[0046] Figure 16 for Figure 15 Enlarged view of point C in the middle;

[0047] Figure 17 for Figure 15 Enlarged view of point D in the middle.

[0048] The following are the labeling elements in the figure:

[0049] 100. Endoscope;

[0050] 10. Operating unit; 11. Drive unit; 12. Force transmission unit; 13. Guide unit; 14. Flexible transmission component; 111. Support component; 112. Rotating component; 113. Lever component; 114. Connecting rod; 114a. First end; 114b. Second end; 1141. First rod segment; 1142. Second rod segment; 1143. Third rod segment; 1144. Fourth rod segment; 112a. Cut edge; 12a. Receiving cavity; 121. Main body; 122. Movable part; 12a1. First receiving groove; 1221. Threaded segment; 1223. Extended segment; 12a2. Second receiving groove; 141. Connecting terminal;

[0051] 20. Insertion section;

[0052] 30. Deformation-resistant structure;

[0053] 41. First seal; 42. Second seal;

[0054] 50. Resistance adjustment mechanism; 51. Bracket; 52. Resistance adjustment elastic element; 53. Friction plate; 54. Adjusting element; 521. Fixing part; 522. Elastic part; 5221. Deformation section; 5222. Connecting section; 52211. Horizontal section; 52212. Vertical section;

[0055] 60. Outer shell;

[0056] X, the direction of force transmission. Detailed Implementation

[0057] The embodiments of this utility model are described in detail below. Examples of these 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 intended to explain this utility model, and should not be construed as limiting this utility model.

[0058] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation 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.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0060] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0061] Typically, an endoscope includes a connecting section, an operating section, and an insertion section. The connecting section connects to the light outlet of the endoscope system, transmitting the light source to the insertion section. The operating section is for medical personnel to hold and operate, adjusting the curvature of the insertion section. The end of the insertion section furthest from the operating section may have a lifter or lens installed, depending on the actual usage requirements. Medical personnel control the lifter or zoom the lens image by operating the relevant parts of the operating section.

[0062] In the relevant technical solution, the operating unit is equipped with a steel wire rope for transmission, which transmits torque to the lifting device or lens of the insertion part. Specifically, the operating unit is equipped with a lever, which, by moving the lever, drives the steel wire rope to transmit torque to the lifting device or lens of the insertion part, ultimately controlling the lifting device or lens to perform corresponding actions.

[0063] However, during the entire force transmission process, due to factors such as the pulling of the lifting device or lens, the lever of the operating part experiences greater resistance during the turning process, and the overall turning process is not smooth.

[0064] In view of this, this application provides an endoscope that improves the torque required to be applied to the lever by limiting the range of the minimum distance D from the rotation center of the rotating member to the connection position of the first end and the rotating member, and the range of the minimum distance L from the connection position of the second end and the force transmission part to the connection position of the first end and the rotating member, thereby achieving a lighter lever feel in terms of user experience.

[0065] Firstly, please refer to Figures 1 to 3 This application provides an endoscope 100, including an operation unit 10.

[0066] The operating unit 10 is for medical personnel to operate with their hands to raise and lower the proximal lifting device, or to magnify and reduce the image.

[0067] Of course, the endoscope 100 may also include an insertion part 20, which is the part that enters the patient's body, and a lifting device or lens is provided at the end of the insertion part 20 away from the operating part 10.

[0068] The operating unit 10 includes a drive unit 11 and a force transmission unit 12. The drive unit 11 is the power source and a component directly operable by the medical staff's fingers; that is, the medical staff transmits torque to the force transmission unit 12 by flicking their fingers. Specifically, the drive unit 11 can be a rotating mechanism or a telescopic mechanism. The force transmission unit 12 is an intermediate structure in the force transmission process, transmitting the torque or force output from the drive unit 11 to the actuator. Here, the force transmission unit 12 can be a sliding mechanism or a slider-like structure, etc.

[0069] Specifically, the drive unit 11 includes a support member 111, a rotating member 112 that rotates about the axis of the support member 111, a lever member 113 provided on the rotating member 112, and a connecting rod 114. The connecting rod 114 has a first end 114a and a second end 114b that are disposed opposite to each other. The first end 114a is connected to the rotating member 112, and the second end 114b is connected to the force transmission unit 12 to drive the force transmission unit 12 to move along the force transmission direction. The force transmission unit 12 is used to connect to the actuator.

[0070] Here, the support member 111 remains fixed to provide support and load-bearing function, the rotating member 112 rotates around the axis of the support member 111, the connecting rod 114 converts the torque of the rotating member 112 into torque and transmits it to the actuator, and the lever 113 directly contacts the fingers of medical personnel to drive the rotating member 112 to rotate around the axis.

[0071] The connecting rod 114 is a rod-shaped structural component. Therefore, the connecting rod 114 has a first end 114a and a second end 114b that are arranged opposite to each other. The first end 114a refers to the end of the connecting rod 114 facing the rotating member 112, and does not refer to the end face of the connecting rod 114. The second end 114b refers to the end of the connecting rod 114 facing the actuator, and similarly, does not refer to the end face of the connecting rod 114.

[0072] Wherein, the minimum distance from the rotation center of the rotating component 112 to the connection position between the first end 114a and the rotating component 112 is D, and the minimum distance from the connection position between the second end 114b and the force transmission part 12 to the connection position between the first end 114a and the rotating component 112 is L, 10mm≤D≤12mm, 48mm≤L≤60mm.

[0073] Here, D can take integer values ​​such as 10mm, 11mm, and 12mm, or smaller values ​​such as 10.5mm, 11.13mm, and 11.99mm. Similarly, L can take values ​​such as 48mm, 49mm, 50mm, 51mm, 52mm, 53mm, 54mm, 55mm, 56mm, 57mm, 58mm, 59mm, and 60mm, or smaller values ​​such as 48.5mm, 55.9mm, and 59.01mm.

[0074] The endoscope provided by this utility model works on the following principle: A medical professional's finger moves the lever 113, causing the rotating component 112 to rotate around the support component 111. Simultaneously, the rotating component 112 drives the connecting rod 114, which in turn moves the power transmission unit 12 along the force transmission direction, ultimately controlling the actuator to perform corresponding actions. Since the radius of the rotating component 112 and the length of the connecting rod 114 determine the magnitude of the torque applied to the lever 113 by the medical professional during operation, a larger torque requires more effort from the medical professional, and vice versa. However, too small a torque can lead to excessive sensitivity, accidental activation, and inaccurate operation. Therefore, a suitable torque is a key indicator for improving the smoothness of the lever 113's movement in the operating unit 10. To address this, this application limits the lengths of D and L through design, allowing the medical professional's finger to apply less force to the lever 113, reducing the risk of accidental activation and making the operation easier.

[0075] Please refer to Figure 3 and Figure 4In some embodiments, in the initial state of actuation, the extension direction of the lever is at an angle α to the force transmission direction, and in the extreme state of actuation, the extension direction of the lever is at an angle β to the force transmission direction, where 40°≤α≤60° and 50°≤β-α≤60°.

[0076] Understandably, the initial state of the movement here refers to the position of each component when the medical staff's finger does not move the lever 113. For example, if... Figure 3 As shown, the extension direction of the lever 113 forms a corresponding angle with the force transmission direction, and the line connecting the first end 114a and the rotating part 112 to the rotation center of the rotating part 112 also forms a corresponding angle with the force transmission direction. Furthermore, in the non-initial state of activation, the medical staff can use their fingers to move the lever 113 according to the arrow direction in the figure, causing the rotating part 112 to rotate around the axis of the support member 111. The rotating part 112 can then drive the connecting rod 114 to move and output torque in the force transmission direction. That is, in the initial state of activation, the entire drive unit 11 does not output torque to the force transmission unit 12. Once the lever 113 is activated, the force balance of the moving parts in the drive unit 11 is broken, resulting in corresponding movement, and finally, torque is output from the second end 114b of the connecting rod 114. Please refer to... Figure 4 The limit state of the lever refers to the position of each component of the drive unit 11 after the lever 113 can no longer be moved when the medical staff flicks the lever 113 to make the rotating component 112 rotate around the axis relative to the support component 111.

[0077] Here, the included angle α can be 40°, 41°, 42°, 43°, 44°, 45°, 46°, 47°, 48°, 49°, 50°, 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59°, 60°, etc. And the difference between β and α can be 50°, 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59°, 60°, etc.

[0078] Thus, by limiting the size of the included angle α and the included angle β, the two position states of the lever can be controlled so that medical personnel can flick it with their fingers.

[0079] Please refer to Figure 3In some embodiments, the connecting rod 114 includes a first rod segment 1141, a second rod segment 1142, a third rod segment 1143, and a fourth rod segment 1144 connected in sequence. In the initial state of actuation, the extension direction of the fourth rod segment 1144 is the same as the force transmission direction, the extension direction of the third rod segment 1143 forms an obtuse angle b with the extension direction of the fourth rod segment 1144, the extension direction of the second rod segment 1142 forms an obtuse angle c with the extension direction of the third rod segment 1143, and the extension direction of the first rod segment 1141 forms an obtuse angle d with the extension direction of the second rod segment 1142.

[0080] Understandably, the connecting rod 114 has a certain curvature. That is, the first segment 1141, the second segment 1142, and the third segment 1143 are connected to form the curved part of the connecting rod 114, while the fourth segment extends along the force transmission direction and is in a straight state. When the lever 113 is moved, the rotating member 112 drives the first segment 1141 to move, and the second segment 1142 and the third segment 1143 also gradually approach the rotating member 112 until the lever 113 can no longer be moved. At this time, the fourth segment 1144 pulls the force transmission part 12, thereby driving the actuator to perform corresponding actions. For example, when the lever 113 is moved, the lifting device is in an upright state, and the lens image is magnified; when the lever 113 is released, the lifting device is in a folded state, and the lens image is reduced.

[0081] Thus, the connecting piece is divided into multiple segments, which facilitates the rotation of the connecting rod 114 with the rotating part 112, making the force transmission process smoother.

[0082] Please refer to Figures 8 to 10 In some embodiments, under the extreme state of the toggle, the rotating member 112 is provided with a slit 112a, and the first rod segment 1141 abuts against the slit 112a.

[0083] Understandably, the limit state of the lever refers to the position of each component of the drive unit 11 after the lever 113 can no longer be moved when the medical staff flicks the lever 113 to make the rotating component 112 rotate around the axis relative to the support component 111.

[0084] When the lever is in its limit state, the first segment 1141 abuts against the tangent edge 112a of the rotating member 112, thereby increasing the contact area between the rotating member 112 and the first segment 1141. This further assists and drives the first segment 1141 to rotate around the support member 111, resulting in a gentler feel when the lever 113 is moved to its limit state.

[0085] Thus, the cut edge 112a on the support member 111 is used to create clearance space for the connecting rod 114, and when the first rod segment 1141 rotates with the rotating member 112 to abut against the cut edge 112a, the rotating member 112 is limited to continue rotating relative to the support member 111.

[0086] Please refer to Figure 4 In some embodiments, the endoscope 100 includes a first seal 41 disposed between the support 111 and the rotating member 112.

[0087] Understandably, the first seal 41 is a sealing ring structure used to seal the rotation gap between the support 111 and the rotating part 112, so as to improve the waterproof and moisture-proof performance of the operating part 10.

[0088] Thus, the first seal 41 is used to improve the waterproof sealing between the support 111 and the rotating part 112.

[0089] Please refer to Figure 5 In some embodiments, the endoscope 100 includes a housing 60 and a second seal 42, which is disposed between the rotating member 112 and the housing 60.

[0090] Similarly, the second seal 42 is a sealing ring structure used to seal the rotation gap between the outer shell 60 and the rotating part 112, so as to improve the waterproof and moisture-proof performance of the operating part 10.

[0091] Thus, the second seal 42 is used to improve the waterproof seal between the housing 60 and the rotating part 112.

[0092] In some embodiments, the first static friction force between the first seal 41 and the rotating member 112 and the support member 111 is greater than the maximum rebound force of the force transmission part 12; or...

[0093] The second static friction force between the second seal 42 and the rotating member 112 and the outer casing 60 is greater than the maximum rebound force of the force transmission part 12; or...

[0094] The sum of the first static friction force between the first seal 41 and the rotating member 112 and the support member 111 and the second static friction force between the second seal 42 and the rotating member 112 and the outer casing 60 is greater than the maximum rebound force of the force transmission part 12.

[0095] Understandably, while achieving the sealing function, the first seal 41 also increases the frictional resistance between the rotating part 112 and the support part 111. That is, due to the setting of the first seal 41, a first static friction force is formed between the rotating part 112 and the support part 111. Similarly, while achieving the sealing function, the second seal 42 also increases the frictional resistance between the rotating part 112 and the outer shell 60.

[0096] Here, the maximum rebound force of the force transmission unit 12 refers to the reverse force of the actuator on the force transmission unit 12. When the first static friction force is greater than the maximum rebound force of the force transmission unit 12, the actuator can maintain its current operating state or position state, that is, the lever 113 can be stably suspended relative to the support 111. Alternatively, when the second static friction force is greater than the maximum rebound force of the force transmission unit 12, the actuator can also maintain its current operating state or position state, and similarly, the lever 113 can be stably suspended relative to the support 111. Alternatively, when the sum of the first static friction force and the second static friction force is greater than the maximum rebound force of the force transmission unit 12, the actuator can also maintain its current operating state or position state, and the lever 113 can be stably suspended relative to the support 111. At the same time, it can also reduce the probability of accidental activation caused by excessively small shifting torque.

[0097] In summary, due to the frictional resistance of the first seal 41 and / or the second seal 42, the actuator can maintain its current operating state or position to meet the corresponding operational needs of medical personnel. For example, when the actuator is a lifting device, it can maintain the lifting device in an upright or semi-upright state; and when the actuator is a lens, it can maintain the current imaging size.

[0098] Thus, by utilizing the first static friction force and / or the second static friction force to be greater than the maximum rebound force of the force transmission unit 12, the lever 113 is stably suspended during the shifting process, thereby enabling the actuator to maintain its current action.

[0099] Please refer to Figures 6 to 10 In some embodiments, the endoscope 100 further includes a resistance adjustment mechanism 50, which includes a bracket 51 connected to the rotating member 112, a resistance adjustment elastic member 52 disposed on the bracket 51, a friction plate 53 disposed on the resistance adjustment elastic member 52, and an adjustment member 54 movably connected to the bracket 51 and capable of abutting against the resistance adjustment elastic member 52. The adjustment member 54 moves relative to the bracket 51 to drive the friction plate 53 on the resistance adjustment elastic member 52 to abut against the support member 111.

[0100] Understandably, the resistance adjustment mechanism 50 is used to increase the frictional resistance between the lever 113 and the support 111, so as to enable the actuator to maintain its current action state or position state. That is, the lever 113 can maintain a stable hovering state relative to the support 111. In particular, when the frictional resistance provided by the first seal 41 and the second seal 42 is insufficient to balance the maximum rebound force of the force transmission part 12, the resistance adjustment mechanism 50 can play a corresponding supplementary role.

[0101] Specifically, the resistance adjustment mechanism 50 includes a support 51, a resistance adjustment elastic element 52, a friction plate 53, and an adjusting element 54. The support 51 is connected to the rotating element 112 and rotates synchronously with the rotating element 112 around an axis. That is, the resistance adjustment elastic element 52, the friction plate 53, and the adjusting element 54 all rotate synchronously with the support 51 around an axis. The resistance adjustment elastic element 52 and the adjusting element 54 are linked. When the adjusting element 54 moves relative to the support 51, it exerts a resisting force on the resistance adjustment elastic element 52, causing the resistance adjustment elastic element 52 to deform. This adjusts the magnitude of the resisting force on the support element 111, thereby adjusting the normal pressure of the friction plate 53 against the support element 111, ultimately achieving the goal of controllable friction between the friction plate 53 and the support element 111.

[0102] Thus, by utilizing the added resistance adjustment mechanism 50, the static friction of the drive unit 11 can be further increased to counteract the maximum rebound force of the force transmission unit 12, ultimately enabling the lever 113 to be stably suspended during the shifting process.

[0103] Please refer to Figure 7 and Figure 8 In some embodiments, the resistance adjustment elastic member 52 includes a fixed part 521 connected to the bracket 51 and an elastic part 522 connected to the fixed part 521. The elastic part 522 includes a deformation section 5221 and a connecting section 5222 connected to opposite sides of the deformation section 5221. The friction plate 53 is disposed on the connecting section 5222, and the adjustment member 54 abuts against the deformation section 5221.

[0104] Understandably, the fixing part 521 is the part that undergoes minimal or no deformation during the contact action of the adjusting member 54, while the elastic part 522 is the part that directly interacts with the adjusting member 54. The connecting section 5222 is used to connect the friction plate 53; therefore, the connecting section 5222 should be positioned around the outer periphery of the support member 111. The deformable section 5221 is the part of the elastic part 522 that directly interacts with the adjusting member 54. To achieve deformability recovery, the deformable section 5221 should have a U-shaped or similar U-shaped structure. That is, the deformable section 5221 includes one horizontal section 52211 and two vertical sections 52212. The horizontal section 52211 directly abuts against the adjusting member 54, and the two vertical sections 52212 are respectively connected to the corresponding connecting section 5222. Therefore, when the adjusting member 54 acts on the horizontal section 52211... The squeezing action on the horizontal section 52211 causes the end of the vertical section 52212 away from the horizontal section 52211 to deform, resulting in a deformation state where the ends of the two vertical sections 52212 are opposite to each other. Ultimately, the deformation force of the two vertical sections 52212 is transmitted to the corresponding connecting section 5222, thereby increasing the normal pressure of the friction plate 53 on the support member 111. At the same time, when the adjusting member 54 removes its action on the horizontal section 52211, the ends of the two vertical sections 52212 away from the horizontal section 52211 return to their initial positions, thus reducing the force on the connecting section 5222. At this time, the normal pressure of the friction plate 53 on the support member 111 decreases.

[0105] Thus, the elastic part 522 deforms under the abutting action of the adjusting member 54 in the deformation section 5221, thereby adjusting the magnitude of the abutting force of the friction plate 53 on the support member 111.

[0106] Please refer to Figures 11 to 14 In some embodiments, the operation unit 10 further includes a flexible transmission member 14. One end of the connecting rod 114 of the force transmission unit 12 away from the drive unit 11 is provided with a receiving cavity 12a. One end of the flexible transmission member 14 is placed in the receiving cavity 12a and can move within the receiving cavity 12a. The other end of the flexible transmission member 14 is connected to the actuator.

[0107] The force transmission unit 12 includes a main body 121 and a movable part 122 movably connected to the main body 121. The movable part 122 can move relative to the main body 121 in the forward or reverse direction of the force transmission direction X to adjust the size of the accommodating cavity 12a.

[0108] The main body 121 is provided with a first receiving groove 12a1, and the movable part 122 has a threaded section 1221 that is threadedly connected to the groove wall of the first receiving groove 12a1 and an extension section 1223 connected to the threaded section 1221. The extension section 1223 extends out of the first receiving groove 12a1 to the outside.

[0109] The threaded section 1221 is provided with a second receiving groove 12a2, which is connected to the first receiving groove 12a1 to form a receiving cavity 12a. The flexible transmission member 14 is provided with a connecting terminal 141, which is placed in the second receiving groove 12a2 and abuts against the groove wall of the second receiving groove 12a2.

[0110] Thus, the connecting terminal 141 of the flexible transmission member 14 can move within the accommodating cavity 12a. This prevents medical personnel from immediately transmitting torque to the flexible transmission member 14 via the force transmission member 12 when manually operating the drive unit 11, thereby reducing the risk of endoscopic misoperation. Simultaneously, the size of the accommodating cavity 12a can be adjusted by changing the relative position between the movable part 122 and the main body 121, thereby improving the installation accuracy requirements of the connecting terminal 141 of the flexible transmission member 14 within the accommodating cavity 12a.

[0111] Please refer to Figures 15 to 17 In some embodiments, the operating part 10 further includes an anti-deformation structure 30, which is sleeved on the flexible transmission member 14 to reduce the deformation of the flexible transmission member 14 during extrusion.

[0112] The flexible transmission member 14 has an exposed section, and the anti-deformation structure 30 is fitted onto the exposed section. The exposed section of the flexible transmission member 14 refers to the part of the flexible transmission member 14 that is not covered during the entire force transmission process when the anti-deformation structure 30 is not provided. Specifically, it can refer to the uncovered part of the entire section from the connection point between the flexible transmission member 14 and the force transmission part 12 to the insertion part 20.

[0113] In addition, the operating part 10 also includes a guide part 13, which is spaced apart from the force transmission part 12. The exposed section is located between the guide part 13 and the force transmission part 12. One end of the anti-deformation structure 30 is connected to the force transmission part 12, and the other end of the anti-deformation structure 30 is connected to the guide part 13.

[0114] Here, the anti-deformation structure 30 mainly limits the flexible transmission member 14 to reduce its deformation when subjected to compression. For example, when the flexible transmission member 14 is compressed, it is prone to deformation in a direction other than the force transmission direction, such as the radial direction of the flexible transmission member 14 itself, or in a direction that forms an angle with the force transmission direction X. Therefore, the function of the anti-deformation structure 30 is to reduce the occurrence of such deformations, so that the flexible transmission member 14 is always extended along the force transmission direction throughout the entire use process, thereby reducing the loss of force during transmission.

[0115] Thus, by adding the anti-deformation structure 30 and fitting it onto the flexible transmission member 14, when medical personnel operate the endoscope, specifically through the drive unit 11 driving the power transmission unit 12 to transmit force to the flexible transmission member 14 to the insertion unit 20, the anti-deformation structure 30 can reduce the deformation of the flexible transmission member 14 when it is squeezed, thereby reducing the loss of force during transmission, increasing the force transmission efficiency, and improving the sensitivity of operation.

[0116] Secondly, embodiments of this application also provide an endoscope system, including a light source host, an image processing device, and the aforementioned endoscope 100. It should be noted that in some embodiments, the light source host and the image processing device can be integrated into a single unit, i.e., they are the same device. In this case, the endoscope system can also be described as including: a display, a host, and the aforementioned endoscope.

[0117] Understandably, the beneficial effects of the second aspect of this application can be referred to the beneficial effects stated in the first aspect, and will not be repeated here.

[0118] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An endoscope (100), characterized in that, The operation part (10) includes a driving part (11) and a force transmission part (12), the driving part (11) includes a support (111), a rotating part (112) rotating around the axis of the support (111), a lever part (113) provided on the rotating part (112), and a connecting rod (114) having oppositely arranged first end (114a) and second end (114b), the first end (114a) is connected to the rotating part (112), the second end (114b) is connected to the force transmission part (12) to drive the force transmission part (12) to move along the force transmission direction (X), and the force transmission part (12) is used for connecting the actuating mechanism. Wherein, the minimum distance from the rotating center of the rotating part (112) to the connecting position of the first end (114a) and the rotating part (112) is D, the minimum distance from the connecting position of the second end (114b) and the force transmission part (12) to the connecting position of the first end (114a) and the rotating part (112) is L, 10mm≤D≤12mm, 48mm≤L≤60mm.

2. The endoscope (100) of claim 1, characterized in that: In the initial state of the lever, the extension direction of the lever part (113) and the force transmission direction (X) form an angle α, in the limit state of the lever, the extension direction of the lever part (113) and the force transmission direction (X) form an angle β, 40°≤α≤60°, 50°≤β-α≤60°.

3. The endoscope (100) of claim 2, characterized in that: The connecting rod (114) includes a first rod segment (1141), a second rod segment (1142), a third rod segment (1143) and a fourth rod segment (1144) connected in sequence; in the initial state of the lever, the extension direction of the fourth rod segment (1144) is the same as the force transmission direction (X), the extension direction of the third rod segment (1143) and the extension direction of the fourth rod segment (1144) form an obtuse angle b, the extension direction of the second rod segment (1142) and the extension direction of the third rod segment (1143) form an obtuse angle c, and the extension direction of the first rod segment (1141) and the extension direction of the second rod segment (1142) form an obtuse angle d.

4. The endoscope (100) of claim 3, characterized in that: In the limit state of the lever, the rotating part (112) is provided with a cutting edge (112a), and the first rod segment (1141) abuts against the cutting edge (112a).

5. The endoscope (100) according to any one of claims 1 to 4, characterized in that: The endoscope (100) includes a first sealing member (41) arranged between the support (111) and the rotating part (112).

6. The endoscope (100) of claim 5, characterized in that: The endoscope (100) includes a housing (60) and a second sealing member (42) arranged between the rotating part (112) and the housing (60).

7. The endoscope (100) of claim 6, characterized in that: The first static friction between the first sealing member (41) and the rotating part (112) and the support (111) is greater than the maximum elastic force of the force transmission part (12); or, The second static friction force between the second sealing member (42) and the rotating member (112) and the housing (60) is greater than the maximum resilient force of the force transmission part (12); or, The sum of the first static friction force between the first sealing member (41) and the rotating member (112) and the support member (111) and the second static friction force between the second sealing member (42) and the rotating member (112) and the housing (60) is greater than the maximum resilient force of the force transmission part (12).

8. The endoscope (100) according to any one of claims 1 to 4, characterized in that: The endoscope (100) further comprises a resistance adjusting mechanism (50), the resistance adjusting mechanism (50) comprising a support (51) connected to the rotating member (112), a resistance adjusting elastic member (52) arranged on the support (51), a friction sheet (53) arranged on the resistance adjusting elastic member (52), and an adjusting member (54) movably connected to the support (51) and capable of abutting against the resistance adjusting elastic member (52), the adjusting member (54) moving relative to the support (51) to drive the friction sheet (53) on the resistance adjusting elastic member (52) to abut against the support member (111).

9. The endoscope (100) of claim 8, characterized in that: The resistance adjusting elastic member (52) comprises a fixed part (521) connected to the support (51) and an elastic part (522) connected to the fixed part (521), the elastic part (522) comprising a deformation section (5221) and a connecting section (5222) connected to opposite sides of the deformation section (5221), the friction sheet (53) being arranged on the connecting section (5222), and the adjusting member (54) abutting against the deformation section (5221).

10. An endoscope (100) system characterized by: The endoscope (100) comprises a light source host, an image processing device, and the endoscope (100) according to any one of claims 1 to 9.

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