Operation part for endoscope and endoscope

Abstract

The embodiment of the utility model provides an operation part for an endoscope and the endoscope, the operation part comprises a first holding part, a cable connecting part and a function button, the first holding part comprises a first side surface, a second side surface, a third side surface and a fourth side surface which are sequentially connected around the longitudinal direction of the first holding part, the first holding part is provided with a far end and a near end which are opposite in the longitudinal direction; the cable connecting part is arranged on the first side surface and extends towards the lateral direction, and the lateral direction is the direction facing the fourth side surface; wherein the second side surface comprises a button surface and a supporting surface; the function button is arranged on the button surface; the support surface extends from a distal end of the button surface to a distal end of the first grip portion, a normal of at least a portion of the support surface simultaneously having a component toward the distal end of the first grip portion and a component toward the first side. In this way, the fingers can be well attached to the supporting surface, and the best supporting effect is achieved.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more specifically, to an operating part for an endoscope and an endoscope. Background Technology

[0002] With the development of medical technology, insertion devices, such as endoscopes, are widely used in imaging examinations and treatments. An endoscope generally consists of three parts: a connecting part, an operating part, and an insertion part. The insertion part is the section inside the insertion port, and its tip can be bent in a controlled manner. The operating part is connected to the base of the insertion part (i.e., the side closest to the user) and is equipped with a rotating handwheel and button devices. The connecting part is connected to the operating part via a universal cable for connecting to peripheral devices such as light sources and image processors. During the examination, the user (e.g., a doctor) holds the operating part and controls the bending of the insertion tip by rotating the handwheel, and operates the peripheral devices connected to the endoscope, such as light sources or image processors, by pressing the button devices, thereby diagnosing the patient.

[0003] The operating unit is the part that users need to hold for a long time and perform most of the operations during the endoscopic examination process. It is necessary to take into account the user's grip comfort and operation convenience. However, the operating units currently on the market do not provide good support for the user when holding the operating unit and performing related operations for a long time, making it difficult to use. Utility Model Content

[0004] To at least partially address the problems existing in the prior art, some embodiments of this application provide an operating part for an endoscope, the operating part comprising: a first grip portion, the first grip portion including a first side surface, a second side surface, a third side surface, and a fourth side surface sequentially connected around its longitudinal direction, the first grip portion having a distal end and a proximal end opposite in the longitudinal direction; a cable connection portion disposed on the first side surface and extending in a lateral direction, the lateral direction being the direction faced by the fourth side surface; and a function button disposed on the second side surface, wherein: the second side surface includes a button surface and a support surface; the function button is disposed on the button surface; the support surface extends from the distal end of the button surface to the distal end of the first grip portion, and the normal of at least a portion of the support surface simultaneously has a component toward the distal end of the first grip portion and a component toward the first side surface.

[0005] For example, along the direction toward the distal end of the first grip, the support surface gradually approaches the longitudinal centerline of the first grip, wherein the longitudinal centerline is parallel to the longitudinal direction and passes through the center of the first grip.

[0006] For example, the angle formed by the support surface and the button surface cut by the imaginary plane is greater than 100 degrees.

[0007] For example, the angle between the line of intersection of the support surface and the imaginary plane and the plane perpendicular to the longitudinal direction is between 20 and 70 degrees, wherein the imaginary plane is parallel to the longitudinal direction and parallel to the axis of the function button.

[0008] For example, the first side and the third side are arranged opposite each other, and along the lateral direction from the third side to the first side, the boundary line between the button surface and the support surface gradually approaches the proximal end of the first grip portion.

[0009] For example, the boundary line has a first endpoint near the first side and a second endpoint near the third side, wherein: the first endpoint is located on the imaginary reference line or closer to the proximal end of the first grip than the imaginary reference line, and the second endpoint is closer to the distal end of the first grip than the imaginary reference line; and the imaginary reference line is parallel to the lateral direction and tangent to the portion of the function button closest to the distal end of the first grip.

[0010] For example, the first side surface and the supporting surface are connected by a first arc surface; the third side surface includes a base surface and a protruding surface, the protruding surface protruding from the base surface in a direction away from the first side surface, wherein: along the circumferential direction surrounding the longitudinal direction, the protruding surface is spaced apart from the second side surface, such that the base surface includes a first base surface connected between the protruding surface and the second side surface; and the first base surface and the supporting surface are connected by a second arc surface.

[0011] For example, the length of the second arc surface in the longitudinal direction is greater than the length of the first arc surface in the longitudinal direction.

[0012] For example, the operating part further includes a second grip portion that extends longitudinally from the distal end of the first grip portion, and a button surface protrudes from the second grip portion in the direction facing the second side of the first grip portion, and a support surface extends between the button surface and the second grip portion.

[0013] For example, a rotating handwheel is provided on the third side, wherein: the supporting surface has a projected profile on an operating plane perpendicular to the axis of the rotating handwheel; the projected profile is located outside the circumcircle of the projection of the rotating handwheel on the operating plane.

[0014] For example, the tangent to the projected profile does not intersect the circumcircle.

[0015] For example, the support surface has a projected profile on an imaginary plane, the tangent of which intersects the function button located at the farthest end of the function buttons; wherein: the imaginary plane is parallel to the longitudinal direction and parallel to the axis of the function button.

[0016] For example, along the longitudinal direction, there is a gap between the cable connector and the support surface; the longitudinal dimension of the gap is adapted to the width of the user's index finger metacarpophalangeal joint.

[0017] For example, the cable connection includes a first cable connection segment and a second cable connection segment connected sequentially in the lateral direction, wherein: the first cable connection segment is connected to a first side of the first gripping portion, and the second cable connection segment protrudes from a fourth side in the lateral direction; and the interval is formed by the distal side surface of the second cable connection segment and the supporting surface.

[0018] For example, the angle between the distal-facing side surface of the second cable connector and the longitudinal direction is within the range of 85-95 degrees. Therefore, the supporting surface is inclined upwards towards the first side to a certain extent, allowing it to better fit the surface of the user's fingers when holding the operating unit. This makes holding the operating unit more comfortable and effortless during extended periods.

[0019] Another aspect of this application provides an endoscope, including: an operating part as described above; and an insertion part, the base end of the insertion part being connected to the distal end of the operating part.

[0020] The solution provided in this application ensures that the fingers (middle finger MF in the first hand shape and ring finger RF in the second hand shape) can fit well against the support surface, achieving optimal support and grip feel. On the other hand, since the support surface is tilted upwards towards the first side to a certain extent, when using the second hand shape to grip the operating part, the ring finger RF can be guided to tilt downwards, causing the fingertip of the ring finger RF to move away from the rotating handwheel. This avoids the ring finger RF interfering with the rotation of the rotating handwheel when the thumb TH and middle finger MF are rotating it.

[0021] This utility model description introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution. Attached Figure Description

[0022] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The accompanying drawings are used to provide a further understanding of the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0023] Figure 1 This is a schematic diagram of an endoscope according to an exemplary embodiment of this application;

[0024] Figure 2 This is a first-view view of the operating section according to an exemplary embodiment of this application;

[0025] Figure 3A for Figure 2 A second-view perspective view of the operating unit shown;

[0026] Figure 3B for Figure 3A A partial enlarged view of the operating part shown;

[0027] Figure 4 A schematic diagram showing the left hand gripping the operating part using the first hand shape;

[0028] Figure 5 This is a schematic diagram showing the left hand gripping the control unit in a second-hand position from a first-person perspective.

[0029] Figure 6 A schematic diagram showing the left hand gripping the control unit from a second-person perspective; and

[0030] Figure 7 for Figure 2 The diagram shows the operation section after the rotary handwheel and some function buttons have been removed.

[0031] The above figures include the following reference numerals:

[0032] 100. Insertion part; 110. Bending part; 120. Flexible insertion tube; 200. Operating part; 201. Instrument channel entrance; 210. First gripping part; 211. First side surface; 212. Second side surface; 2121. Button surface; 2122. Support surface; 2122a. First edge; 2122b. Second edge; 2123. First arc surface; 2124. Second arc surface; 2125. Boundary line; 213. Third side surface; 2131. Base surface; 2132. Protruding surface; 21 4. Fourth side surface; 220. Cable connection part; 223. First arc-shaped boundary line; 224. First cable connection segment; 225. Second cable connection segment; 2251. Side surface; 226. Second arc-shaped boundary line; 231. First button; 232. Second button; 233. Third button; 234. Fourth button; 240. Second grip part; 241. Anti-slip strip; 250. Rotary handwheel; 251. First rotary handwheel; 252. Second rotary handwheel; 300. Universal cable; 400. Connection part. Detailed Implementation

[0033] In the following description, numerous details are provided to enable a thorough understanding of this application. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the application by way of example only. Furthermore, to avoid confusion with this application, some technical features well-known in the art have not been described in detail.

[0034] This application provides an endoscope. Although not illustrated, the endoscope has a known illumination optics system for illuminating the opening and a known observation optics system for photographing and observing the opening illuminated by the illumination optics system. The endoscope also includes one or more of the following: an air / water supply unit for cleaning the objective lens (not shown) of the observation optics system; and an aspiration unit for aspirating living tissue and blood.

[0035] like Figure 1 As shown, the endoscope may include an insertion portion 100 for insertion into a port. The insertion portion 100 may include a curved portion 110 at its distal end, the distal end of which may include a tip. An optical imaging element of the aforementioned observation optical system may be provided on the tip. An instrument channel opening for the extension of a treatment instrument may also be provided on the tip. The insertion portion 100 may further include a flexible insertion tube 120 connected to the proximal end of the curved portion 110. The proximal end refers to the end of the endoscope closer to the user (i.e., the operator, such as a doctor) during use, and the distal end refers to the end closer to the patient and farther from the user. The endoscope may also include an operating portion 200, which may be connected to the proximal end of the flexible insertion tube 120. The operating portion 200 is held by one of the user's hands, particularly the left hand. The bending direction of the curved portion 110 can be controlled via the operating portion 200. In an embodiment not shown, a rigid tube without flexibility may be provided between the curved portion 110 and the operating portion 200. The base end of the insertion portion 100 is connected to the distal end of the operation portion 200. When the insertion portion 100 includes an instrument channel, the instrument channel can extend from the insertion portion 100 into the operation portion 200 and is connected to an instrument channel inlet 201 provided on the surface of the operation portion 200.

[0036] like Figure 1 As shown, the operating part 200 for an endoscope may include a first gripping part 210. (Referring to reference...) Figures 2-6The first grip portion 210 includes a first side surface 211, a second side surface 212, a third side surface 213, and a fourth side surface 214 sequentially connected around its longitudinal direction YY. The internal space enclosed by the first side surface 211, the second side surface 212, the third side surface 213, and the fourth side surface 214 can accommodate functional components of the operating section, such as components for operating the air supply unit, water supply unit, and / or suction unit (e.g., valve body, pipes, etc.), components for adjusting the bending angle of the curved section 110 (e.g., sprockets, etc.), etc. It should be noted that these four sides do not necessarily have to be planar. Taking the fourth side surface 214 as an example, the fourth side surface 214 can be constructed as a curved surface formed by two curved surfaces joined together, or it can include multiple joined planes, or it can include both planes and curved surfaces. One or more of the four sides can also be constructed as curved surfaces, and part or all of each of the four sides may not be parallel to the longitudinal direction YY, but rather have an angle with the longitudinal direction YY. The first grip portion 210 has a distal end and a proximal end opposite in the longitudinal direction YY. For ease of understanding, the direction of the vertical direction YY towards the far end is called "down," and the direction of the vertical direction YY towards the near end is called "up," which also corresponds to "up" and "down" in the diagram.

[0037] The operating unit 200 may further include a cable connector 220, which is disposed on the first side 211 and extends in a lateral direction, the direction facing the fourth side 214. In some embodiments, the lateral direction may be perpendicular to the longitudinal direction YY. In the embodiment shown in the figure, the angle between the lateral direction and the longitudinal direction YY may be slightly greater than or slightly less than 90 degrees. It should be noted that the lateral extension of the cable connector 220 does not limit the centerline of the cable connector 220 to be parallel to the lateral direction. When the user holds the operating unit, the web of the hand can rest against the cable connector 220 and the position where it connects to the first side 211 and the fourth side 214, thereby providing upward support for the operating unit 200 and making it easier to use.

[0038] The first grip portion 210 of the operating unit 200 can be made of plastic. The first grip portion 210 can be divided into multiple parts, each manufactured by injection molding and connected together by bonding, ultrasonic welding, interference fit, snap-fit, or fasteners. This allows functional components to be easily installed within the space of the first grip portion 210. In one exemplary embodiment, the first grip portion 210 of the operating unit 200 can be injection molded in two parts, with the dividing line between these two parts generally located on the first side surface 211 and the fourth side surface 214. The cable connector 220 can be separately injection molded from the first grip portion 210 and then connected to the first side surface 211 of the first grip portion 210. In another embodiment, the cable connector 220 can be injection molded together with the first side surface 211 of the first grip portion 210. Regardless of which method is used to connect the cable connector 220 to the first side 211, it is necessary to ensure that the connection between the cable connector 220 and the first side 211 has a sufficiently large area to distribute the force and prevent deformation or even breakage after long-term use.

[0039] The operating unit 200 may further include function buttons, which can be disposed on the second side 212. Exemplarily, all function buttons on the operating unit 200 may be standard components to reduce the cost of the operating unit 200 and ensure reliable performance. In some embodiments, even if the function buttons are not standard components, their dimensions are generally fixed to match the size of the user's fingers, facilitating user operation. The second side 212 may include a button surface 2121 and a support surface 2122, and the function buttons may be disposed on the button surface 2121. The figure shows four function buttons arranged on the button surface 2121, including a first button 231, a second button 232, a third button 233, and a fourth button 234. The fourth button 234 is closest to the support surface 2122, and the second button 232 is furthest from the support surface 2122. Figure 3A In the illustrated embodiment, when viewed directly from the button surface 2121, the right edges of the first button 231, the third button 233, and the fourth button 234 are tangent to the same straight line, allowing the index finger to easily reach each function button. Furthermore, the first button 231 and the second button 232 can be smaller than the third button 233 and the fourth button 234. This allows the center of the first button 231 to be offset to the right relative to the centers of the third button 233 and the fourth button 234, so that when the index finger moves to the position of the first button 231, the pad of the index finger is positioned directly above the center of the first button 231, facilitating the application of positive pressing pressure and improving operational convenience and stability. In embodiments not shown, the centers of the four function buttons can be aligned on a straight line, or the four function buttons can be staggered on the button surface 2121 according to other requirements.

[0040] Exemplarily, the first button 231 and the second button 232 can be configured, for example, in a control unit (not shown) of the endoscope to freeze the image and switch the imaging mode (e.g., switch the imaging mode from a normal light (white light) mode to a special light (e.g., fluorescence) mode). The third button 233 is used to aspirate living tissue and blood located outside the tip of the bend 110. The fourth button 234 can be used to deliver air and liquid from the tip of the bend 110. The third button 233 and the fourth button 234 are respectively part of the aspiration unit and the air / water delivery unit extending from the tip of the bend 110 of the endoscope through the flexible insertion tube 110 and to the operation section 200. Furthermore, it is preferred that the third button 233 and the fourth button 234 in this embodiment have the same size and shape. It is understood that in practical applications, the functions corresponding to these four buttons can also be set as needed.

[0041] The support surface 2122 can contact the user's fingers when the user holds the operating part 200, and the user's fingers provide support so that the operating part 200 can be firmly held and is not easy to shake under the action of external force.

[0042] For example, the operating part 200 may include a second gripping part 240 extending along the longitudinal direction YY. The second gripping part 240 may be connected to the distal end of the first gripping part 210. The distal end of the second gripping part 240 may also be connected to the base end (i.e., the proximal end) of the insertion part 100. The second gripping part 240 may have an elongated rod-like structure. The second gripping part 240 allows for better control of the angle of the operating part 200, better fits the user's palm, improves grip comfort and stability, and prevents the operating part 200 from tilting in an undesirable direction.

[0043] Exemplarily, the second grip portion 240 of the operating portion 200 has a gradually decreasing cross-sectional area from the proximal end (the end connected to the first grip portion 210) to the distal end. The base end of the insertion portion 100 can be connected to the distal end of the second grip portion 240. Such a second grip portion 240 facilitates user gripping, and the palm, little finger LF, and ring finger RF (possibly further including the middle finger MF) can provide an upward resultant force on the second grip portion 240, preventing the second grip portion 240 from slipping without the user needing to grip it tightly. The second grip portion 240 may also be provided with anti-slip strips 241 to increase friction with the user's fingers. Along the direction facing the second side surface 212 of the first grip portion 210, the button surface 2121 protrudes from the second grip portion 240, and the support surface 2122 extends between the button surface 2121 and the second grip portion 240. When the user's hand grips the second grip portion 240, the middle finger MF can naturally rest on the support surface 2122. When operating function buttons or rotating the handwheel 250 (mentioned below), the middle finger MF can leave the support surface 2122, and the ring finger RF can slide along the surface of the second grip portion 240 to replace it. The frustum-shaped second grip portion 240 is well-suited to the shape of the support surface 2122, but this application does not exclude embodiments using other shapes of the second grip portion 240.

[0044] refer to Figure 4 , Figure 5 and Figure 6 The operating unit 200 in this embodiment of the application may have at least two gripping methods.

[0045] like Figure 4 As shown, when the user's left hand holds the operating unit 200 in a first hand position, at least the thumb (TH), middle finger (MF), ring finger (RF), and palm can position the operating unit 200 in the circumferential direction to keep the operating unit 200 in a generally neutral position, that is, the longitudinal direction YY of the operating unit 200 is parallel to a predetermined direction, such as the vertical direction. The thumb (TH) and index finger (IF) can act on the first gripping part 210 of the operating unit 200, the middle finger (MF) can act on both the first gripping part 210 and the second gripping part 240 of the operating unit 200, while the ring finger (RF) and little finger (LF) can act on the second gripping part 240, and the palm acts on both the first gripping part 210 and the second gripping part 240. Along the vertical direction, the web of the thumb and the middle finger (MF) mainly support the cable connection part 220 and the support surface 2122 upwards, thereby keeping the operating unit 200, along with the insertion part 100 and the universal cable connected to the operating unit 200, in the desired position along the longitudinal direction YY. As shown above, an anti-slip strip 241 may be provided on the second grip portion 240 of the operating part 200, thereby using friction to prevent the operating part 200 from falling to a certain extent.

[0046] During use, the user will need to operate the buttons and other components on the operation unit 200. When it is necessary to operate the components on the operation unit 200, it may be necessary to hold the operation unit 200 with a second hand. See [link to relevant documentation]. Figures 5 to 6 Typically, the time spent holding the operating unit 200 using the first hand position is roughly equal to or longer than the time spent operating the components on the operating unit 200 using the second hand position. Regardless of whether the operating unit 200 is held using the first or second hand position, the thumb and forefinger always support the cable connection portion 220. When holding the operating unit 200 using the second hand position, the middle finger MF can slide across the support surface 2122 to above the fourth button 234, facilitating the index finger IF to operate buttons closer to the proximal side, such as the first button 231, or facilitating the operation of the rotary handwheel 250 on the third side 213 by the middle finger MF or the ring finger RF together with the thumb TH. The ring finger RF can rest against the support surface 2122 to support the operating unit 200. In this case, the user's index finger IF has a sufficiently large range of motion to operate almost all the buttons on the button surface 2121. During operation of the rotary handwheel 250, such as Figure 6 As shown, a portion of the ring finger RF may move away from the support surface 2122 to make room for the middle finger MF to rotate the handwheel 250 clockwise. However, since the web of the hand always supports the cable connector 220 and the middle finger MF can support the rotating handwheel 250, the operating part 200 can also be kept in a generally neutral position.

[0047] Return to reference Figure 3A The support surface 2122 can extend from the distal end of the button surface 2121 to the distal end of the first grip portion 210. For example... Figure 3A As shown, the distal edge of the support surface 2122 (i.e., the lower edge in the figure) is generally perpendicular to the longitudinal direction YY. In some embodiments, the support surface 2122 may be constructed as a curved surface to better accommodate the curvature of the user's fingers. In other embodiments, the support surface 2122 may also be constructed as a plane. For any shape of support surface 2122, at least a portion of the normal of the support surface 2122 has a component pointing towards the distal end of the first grip portion 210. In other words, at least a portion of the support surface 2122 faces downward or diagonally downward. Thus, when the user's fingers rest against the support surface 2122, the pressure of the fingers on the support surface 2122 has an upward component, rather than preventing the end of the operating portion 200 from sliding downward through friction.

[0048] For example, along the direction toward the distal end of the first grip portion 210, the support surface 2122 may gradually approach the longitudinal centerline of the first grip portion 210. The longitudinal centerline is parallel to the longitudinal direction YY and passes through the center of the first grip portion 210. Continuing to refer to... Figure 2The distance from the boundary line 2125 between the support surface 2122 and the button surface 2121 to the longitudinal center line is the farthest. Any point on the support surface 2122 slopes downwards, allowing the support surface 2122 to extend smoothly. As described above, when the user's thumb rests against the connection between the cable connector 220 and the first grip 210, the resulting support force has an upward component and also generates a component force towards the second side 212. The user's fingers rest against the inclined support surface 2122, and the resulting support force can counteract the aforementioned component force towards the second side 212. This prevents the operating part 200 from tilting, making the grip more stable. In some embodiments, at least a portion of the support surface 2122 adheres to the inner surface of the fingers facing the palm. Compared to the prior art's finger-side force application scheme, when the user uses the operating part 200 of this application, the fingers can exert force more effectively, and finger soreness will not occur during prolonged use. In other embodiments, the function button on the button surface 2121 has a fixed and immovable bottom. When the user's finger rests against the support surface 2122, the outer part of the finger can rest against the bottom of the function button, thereby increasing the area of ​​force on the finger. This can distribute the weight of the operating part 200 and improve comfort during long-term operation.

[0049] Define an imaginary plane that is parallel to the longitudinal direction YY and also parallel to the axis of the function button. For Figure 2 This imaginary plane can be parallel to Figure 2 The paper surface. Along the horizontal direction, from one end of the boundary line 2125 to the other end, there can be an infinite number of imaginary planes. For each imaginary plane, the angle formed by the support surface 2122 and the button surface 2121 intercepted by the imaginary plane is greater than 100 degrees. For example, this angle can be between 110 degrees and 150 degrees. Thus, the support surface 2122 can smoothly transition between the button surface 2121 and the second grip portion 240. When operating the function buttons, etc. on the operation portion 200, after the user changes hand shape, the fingers will not be placed at the boundary line 2125 between the support surface 2122 and the button surface 2121 and feel uncomfortable. During the process of changing hand shape, the fingers will not experience a jerky feeling at the boundary line.

[0050] Exemplarily, the support surface 2122 may have a first edge 2122a near the first side surface 211 and a second edge 2122b away from the first side surface 211. In some embodiments, the heights at which the first edge 2122a and the second edge 2122b of the support surface 2122 protrude from the first grip portion 210 may be different. The "height of protrusion from the first grip portion 210" may be associated with the "angle between the support surface 2122 and the longitudinal direction YY". Along the transverse direction from the third side surface 213 to the first side surface 211, the more a portion of the support surface 2122 protrudes from the first grip portion 210, the larger the acute angle between the boundary line of the support surface 2122 and the imaginary plane at the location of that portion and the longitudinal direction. For example, the second edge 2122b may protrude more from the first grip portion 210 than the first edge 2122a. The support surface 2122 extends smoothly from the first edge 2122a to the second edge 2122b, such that at least a portion of the normal of the support surface 2122 has a component pointing towards the first side surface 211. In one set of embodiments, from Figure 3A Viewed from the right, the support surface 2122 can be seen, while viewed from the left, only the second edge 2122b of the support surface 2122 can be seen.

[0051] Optionally, the support surface 2122 has a portion that protrudes more from the first grip portion 210 than both the first edge 2122a and the first edge 2122a. In this case, from Figure 3A The area of ​​the support surface 2122 seen from the right is greater than the area of ​​the support surface 2122 seen from the left.

[0052] Thus, the supporting surface 2122 is Figure 2 The projection on the paper can be a plane. The second edge 2122b protrudes further from the first grip portion 210 than the first edge 2122a, and the normal of at least a portion of the supporting surface 2122 is directed towards... Figure 3A The rightward tilt causes this portion of the support surface 2122 to have a component facing the first side 211. Therefore, the support surface 2122 is tilted upwards towards the first side 211 to a certain extent, allowing it to better conform to the surface of the user's fingers when holding the operating part 200, such as... Figure 4 As shown. This makes holding the operating unit 200 more comfortable and less strenuous for extended periods.

[0053] For ordinary people, when holding an object, to achieve a more secure grip, they usually place their palm against the object's surface. This provides greater friction and, with its larger contact area, prevents the object from rotating under external force. In this grip, for the second gripping part, which is cylindrical or conical in shape, the fingers are typically angled from the palm towards the fingertips. This ensures that the fingers (middle finger MF in the first hand shape and ring finger RF in the second hand shape) fit well against the support surface 2122 for optimal support. On the other hand, since the support surface 2122 is angled upwards towards the first side 211 to some extent, when using the second hand shape to grip the operating part 200, the ring finger RF can be guided to tilt downwards, keeping its pad away from the rotating handwheel 250. This prevents the ring finger RF from interfering with the rotation of the rotating handwheel 250 when the thumb TH and middle finger MF are rotating it.

[0054] For example, the first side 211 and the third side 213 are disposed opposite each other, and along the lateral direction from the third side 213 to the first side 211, the boundary line 2125 between the button surface 2121 and the support surface 2122 gradually approaches the proximal end of the first grip portion 210. See also Figures 2 to 3B Optionally, along the transverse direction from the third side 213 to the first side 211, the boundary line 2125 may extend obliquely upward; alternatively, the boundary line 2125 may extend upward in a curved manner. The shape of the boundary line 2125 is related to the shape of the supporting surface 2122. At least a portion of the normal to the supporting surface 2122... Figure 3A and Figure 4 The right side is skewed, and the right end of the boundary line 2125 is higher than the left end, which allows the support surface 2122 to connect smoothly with the button surface 2121, so that there will be no jerking sensation when the finger passes through the boundary line 2125.

[0055] refer to Figure 3A and Figure 3BFor example, the boundary line 2125 has a first endpoint C near the first side 211 and a second endpoint B near the third side 213. The first endpoint C may be located on or closer to the proximal end of the first grip portion 210 than the imaginary reference line L2, and the second endpoint B is closer to the distal end of the first grip portion 210 than the imaginary reference line L2. Connecting the first endpoint C and the second endpoint B yields a first imaginary straight line L1. In the figure, an imaginary reference line L2 parallel to the lateral direction can also be drawn, tangent to the portion of the function button closest to the distal end of the first grip portion 210. That is, the imaginary reference line L2 is tangent to the bottom of the fourth button 234. Thus, the first imaginary straight line L1 intersects the imaginary reference line L2 below the function button. When the boundary line 2125 is a straight line, the boundary line 2125 coincides with the first imaginary straight line L1. When the boundary line 2125 is curved, it can be located above or below the first imaginary straight line L1. In short, the extension trend of the boundary line 2125 is that the portion closer to the first side 211 is higher than the portion farther from it. This design allows the user to better conform to the shape of their fingers when holding the operating unit 200, improving grip comfort. Furthermore, the contact point between the middle finger and the support surface 2122 is moved upwards, and the metacarpophalangeal joint of the index finger moves upwards accordingly. Therefore, the index finger IF only needs to move a small distance or pivot a small angle to reach the various function buttons on the button surface 2121, making it easier to operate the topmost button on the button surface 2121. The operating unit 200 is more compact overall, suitable for users with different hand sizes, especially those with smaller hands.

[0056] Understandably, the angle α between the first imaginary straight line L1 and the imaginary reference line L2 determines the inclination or curvature of the boundary line 2125, i.e., the size of the rounded corner between the index finger (IF) and middle finger (MF) when gripping, thus affecting the grip feel. The larger the angle α, the better the guidance for the fingertips supported on the support surface 2122, allowing the fingertips to be further away from the rotating handwheel 250. However, if the angle α is too large, it can easily force the index and middle fingers to form an inherent angle, which is not conducive to the index finger operating the top button on the button surface 2121.

[0057] For example, the first side surface 211 and the supporting surface 2122 are connected by a first curved surface 2123. When the user moves his finger to operate the function button located on the upper part of the button surface 2121, the finger will not experience any jerking sensation when passing through the first curved surface 2123.

[0058] For example, in conjunction with the reference Figure 2 , Figure 3A and Figure 7The third side surface 213 may include a base surface 2131 and a protruding surface 2132, the protruding surface 2132 protruding from the base surface 2131 in a direction away from the first side surface 211. Along a circumferential direction surrounding the longitudinal direction YY, the protruding surface 2132 is spaced apart from the second side surface 212, such that the base surface 2131 includes a first base surface 2131 connecting the protruding surface 2132 and the second side surface 212. The first base surface 2131 and the support surface 2122 can be transitionally connected via a second arcuate surface 2124. The proximal outer contour of the second grip portion 240 can be adapted to the outer contour defined by the distal edges of the first side surface 211, the support surface 2122, the protruding surface 2132, and the fourth side surface 214, allowing for a smooth transition between the first grip portion 210 and the second grip portion 240.

[0059] For example, in the transverse direction, the lengths of the first arc surface 2123 and the second arc surface 2124 can be the same or have a small length difference. In the longitudinal direction, the length of the second arc surface 2124 in the longitudinal direction YY can be greater than the length of the first arc surface 2123. When the curvatures of the first arc surface 2123 and the second arc surface 2124 are similar, the formed second arc surface 2124 is more concave towards the inside of the first grip portion 210. For example... Figure 6 As shown, the user may need to use their middle finger (MF) to reach across the support surface 2122 to access and rotate the rotary handwheel 250. The longer second arc surface 2124 creates more clearance, thus preventing the user's fingers from being obstructed when rotating the rotary handwheel 250. Conversely, the shorter first arc surface 2123 makes the transition between the first side surface 211 and the support surface 2122 smoother, resulting in a less uncomfortable feel during prolonged gripping.

[0060] The protruding surface 2132 of the third side 213 is used to mount the rotating handwheel 250. The rotating handwheel 250 can be mounted on the protruding surface 2132. The outward protrusion of the protruding surface 2132 can create a larger space inside the first grip portion 210. This space can be used to accommodate the tightening and releasing mechanism connected to the rotating handwheel 250 for controlling the bending direction of the bending portion 110. When the user rotates the rotating handwheel 250 with the middle finger MF or the ring finger RF and thumb TH, the rotation angle is usually within 180 degrees. The user's middle finger MF can be positioned in front of the base surface 2131 throughout the entire rotation of the rotating handwheel 250 from the starting point to the ending point. Here, "in front" refers to the direction in which the base surface 2131 faces. In this way, the user's middle finger MF is not obstructed, and the use of the rotating handwheel 250 is smoother. Furthermore, the gap between the rotating handwheel 250 and the third side 213 will not accidentally squeeze the user's fingers due to the rotation of the rotating handwheel 250.

[0061] For example, such as Figure 2As shown, the rotary handwheel 250 may include a first rotary handwheel 251 and a second rotary handwheel 252. The first rotary handwheel 251 and the second rotary handwheel 252 may be coaxially arranged and can be roughly constructed in a star shape. Taking the first rotary handwheel 251 as an example, the first rotary handwheel 251 may include a circular central portion and multiple protrusions arranged circumferentially along the central portion. The multiple protrusions protrude radially along the central portion. The user can push the first rotary handwheel 251 to rotate with relatively little effort by pressing against the multiple protrusions with their thumb (TH) and middle finger (MF). The second rotary handwheel 252 also includes multiple circumferentially arranged protrusions, and its central portion is smaller than the central portion of the first rotary handwheel 251. The circumcircle of the multiple protrusions of the second rotary handwheel 252 is smaller than the circumcircle of the multiple protrusions of the first rotary handwheel 251. Therefore, the user will not interfere with the second rotary handwheel 252 when operating the first rotary handwheel 251. In the embodiment shown, the first rotating handwheel 251 can be used to operate the bending portion 110 of the insertion portion 100 to bend vertically, and the second rotating handwheel 252 is used to operate the bending portion 110 to bend horizontally. In an embodiment not shown, the first rotating handwheel 251 can be used to operate the bending portion to bend horizontally, and the second rotating handwheel 252 can be used to operate the bending portion to bend vertically. In some embodiments, the operating portion 200 may also be provided with only one rotating handwheel.

[0062] For example, the support surface 2122 has a projected profile on an operating plane perpendicular to the axis of the rotary handwheel 250. The projected profile of the support surface 2122 may lie outside the circumcircle of the projection of the rotary handwheel 250 onto this operating plane (the dashed circle shown in the figure). For some users, it is difficult to separate the ring finger RF from the middle finger MF by a large angle when the ring finger RF is not under force, preventing the middle finger MF from moving independently to the desired position. Therefore, the support surface 2122 can limit the user's ring finger RF, ensuring that the end of the limited ring finger RF does not contact the rotary handwheel 250 and hinder its rotation. In this case, the user's middle finger MF can rotate the rotary handwheel 250 more flexibly.

[0063] Furthermore, in such Figure 2In the exemplary embodiment shown, a tangent L3 is drawn to the projected profile of the support surface 2122 on the operating plane. The tangent L3 does not intersect the circumcircle formed by the rotating handwheel 250 on the operating plane. Normally, a chamfer is provided between the support surface 2122 and the button surface 2121 to ensure a smooth transition. Excluding the chamfer, the projected profile of the support surface 2122 on the operating plane is generally a straight line or a slight arc. When the projected profile of the support surface 2122 is a straight line, it coincides with the tangent L3, and the circumcircle of the rotating handwheel 250 does not intersect the tangent L3. When the projected profile of the support surface 2122 is a slight arc, it may have multiple tangents L3 at different locations. Excluding the chamfer between the support surface 2122 and the button surface 2121, the circumcircle of the rotating handwheel 250 does not intersect any tangent L3. Therefore, the support surface 2122 can effectively guide the user's ring finger RF, preventing the end of the ring finger RF from obstructing the rotation of the handwheel 250.

[0064] For example, the angle between the tangent L3 and the reference line L5 perpendicular to the longitudinal direction YY is b. Angle b can be set to provide good support for the supporting surface 2122 without causing the angle between the button surface 2121 and the supporting surface 2122 to be too small. (Refer to...) Figure 2 If angle b is too large, with the dimensions of the second side 212 and the button surface 2121 remaining unchanged, the width of the support surface 2122 in the left-right direction in the figure may become smaller, and the upward component of the force exerted by the finger on the support surface 2122 will decrease. This will result in a poorer support effect of the support surface 2122. If angle b is too small, the angle between the button surface 2121 and the support surface 2122 will be too small, for example, close to 90 degrees. While this can improve the support effect, it may cause a jerky feeling when the finger transitions from the support surface 2122 to the button surface 2121 to operate the function key. Therefore, angle b can be approximately in the range of 20 to 70 degrees. Further, angle b can be approximately in the range of 30 to 60 degrees. Angle b can also be characterized as the angle between the line of intersection of the support surface 2122 and an imaginary plane and a plane perpendicular to the longitudinal direction YY. The imaginary plane is parallel to the longitudinal direction YY and parallel to the axis of the function button (e.g., the axis L5 of the fourth button 234). Normally, the axis of the function button is roughly parallel to the operating plane of the rotating handwheel 250.

[0065] However, this application does not exclude embodiments in which the button surface 2121 and the support surface 2122 are substantially perpendicular, and / or the support surface 2122 is substantially perpendicular to the longitudinal direction YY.

[0066] For example, the intersection point D of the tangent line L3 and the fourth button 234 can be D. Further, the intersection point D of the tangent line L3 and the fourth button 234 can be located above the axis L5 of the fourth button 234. Thus, the middle finger MF can smoothly slide upwards from the support surface 2122 onto the fourth button 234 to operate the fourth button 234.

[0067] For example, see Figure 3A and Figure 4 Along the longitudinal direction YY, there is a gap between the cable connector 220 and the support surface 2122. The longitudinal dimension of this gap is adapted to the width of the user's index finger IF metacarpophalangeal joint. When the user holds the operating unit, the metacarpophalangeal joint of the index finger IF and the second metacarpal bone (connecting the metacarpal bone of the index finger IF) can rest against the underside of the cable connector 220. The middle finger MF can just extend and rest against the support surface 2122. Thus, the user's thumb, the second metacarpal bone to the metacarpophalangeal joint of the index finger IF, and the middle finger MF can provide support for the operating unit from three directions, which is more in line with ergonomic design.

[0068] Exemplarily, the cable connector 220 may have a distal side and a proximal side that are opposite in the longitudinal direction YY. The cable connector 220 also includes a first cable connector segment 224 and a second cable connector segment 225 connected sequentially in the lateral direction. The first cable connector segment 224 is connected to a first side surface 211 of the first gripping portion 210, and the second cable connector segment 225 protrudes from the fourth side surface 214 in the lateral direction. On the distal side of the cable connector 220, the first cable connector segment 224 and the first side surface 211 form a first arcuate boundary line 223. The first arcuate boundary line 223 refers to the boundary line portion visible from bottom to top. On the proximal side of the cable connector 220, the first cable connector segment 224 and the first side surface 211 form a second arcuate boundary line 226, which is the boundary line portion visible from top to bottom. The second cable connector segment 225 is connected to a universal cable 300. The other end of the universal cable 300 can be connected to a connector 400. When the user operates the device, the operating unit 200 can be held firmly with the hand, and the web of the thumb supports the cable connection portion 220. When the user holds the operating unit 200 and the index finger IF is not applying force, the index finger IF can be spaced apart from the first arc-shaped boundary line 223 and extend to the front of the function button on the second side 212. This spacing can be formed by the distal side surface 2251 of the second cable connection segment 225 and the support surface 2122. Specifically, this spacing can be the distance between the location of the side surface 2251 and the nearest point of the support surface 2122 in the longitudinal direction.

[0069] For example, the angle between the distal-facing side surface 2251 of the second cable connection segment 225 and the longitudinal direction YY is in the range of 85-95 degrees. Taking the embodiment shown in the figure as an example, the second cable connection segment 225 can be generally constructed as a cone shape with its tip shaved off. The side surface 2251 can be an arcuate surface. The cross-sectional shape (i.e., arc) of this arcuate surface at different positions on the sixth imaginary line L6 is generally similar, except that the opening size of the arc gradually decreases along the direction away from the first grip portion 210. Wherein, the sixth imaginary line L6 is the extension line of the projected contour line of the side surface 2251 in the plane where the first side surface 211 is located. When the user's hand grasps the second grip portion 240, the upper side surface of the second metacarpal bone at the web of the thumb can be parallel to the extension direction of the second cable connection segment 225, and the distal-facing side surface 2251 of the second cable connection segment 225 can be supported on the upper side surface of the second metacarpal bone. This can better support the operating part 200 and prevent it from falling off. Moreover, it is less tiring to use for a long time. For users with larger hands, this angle range will not cause problems such as pinching or slipping.

[0070] For example, when holding the operating part 200, the side surface 2251 is mainly supported on the web of the hand. The projected outline of the side surface 2251 on the surface where the first side surface 211 is located is a straight line. Normally, to improve grip comfort, the first side surface 211 may be generally flat, and the edge region of the first side surface 211 may be curved towards the adjacent surface to make the transition between the first side surface 211 and the adjacent surface smooth. Thus, the "surface where the first side surface 211 is located" can refer to the surface parallel to the central region of the first side surface 211.

[0071] For a standard-sized hand gripping the operating unit 200, the side surface 2251 extends beyond the wrist line and onto the forearm in the lateral direction. Therefore, regardless of hand size, the straight-lined side surface 2251 ensures that the portion of the cable connector 220 resting on the web of the hand is smooth, providing stable support for the cable connector 220 while ensuring user comfort. Furthermore, when the user's wrist is relaxed, the side surface 2251 will not interfere with the user's forearm. In some usage scenarios, the user may drape a portion of the universal cable 300 over their arm. The straight-lined side surface 2251 allows the end of the second cable connector 225 to be approximately flush with the outer surface of the universal cable 300, minimizing the height difference between the universal cable 300 and the arm. This allows for a more secure grip on the operating unit 200 when the universal cable 300 is draped over the user's arm.

[0072] As described above, the third button 233 is positioned above the fourth button 234. Within the plane of the first side surface 211, the outermost contour of the projection of the third button 233 can be above and spaced apart from the sixth imaginary line L6. The outermost contour of the projection of the fourth button 234 within the plane of the first side surface 211 can intersect the sixth imaginary line L6. Therefore, without changing the hand shape, the fourth button 234 is also within the range of movement of the user's index finger (IF), allowing the user to operate the fourth button 234 using their index finger (IF).

[0073] In the description of this utility model, it should be understood that the directional terms such as "front", "rear", "up", "down", "left", "right", "horizontal", "vertical", "horizontal", "top", and "bottom" indicate the orientation or positional relationship, which are usually 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. Unless otherwise stated, these directional terms 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 the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0074] For ease of description, relative terms such as "above," "over," "on the upper surface of," and "above" are used here to describe the regional positional relationship of one or more components or features shown in the figures to other components or features. It should be understood that relative terms include not only the orientation of the component as depicted in the figure but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases.

[0075] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0076] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0077] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that this utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this utility model, all of which fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An operating portion for an endoscope, characterized by, The operating unit includes: A first grip portion, the first grip portion including a first side surface, a second side surface, a third side surface and a fourth side surface connected sequentially around its longitudinal direction, the first grip portion having a distal end and a proximal end opposite to each other along the longitudinal direction; A cable connector, wherein the cable connector is disposed on the first side and extends in a lateral direction, the lateral direction being the direction facing the fourth side; and Function buttons, wherein the function buttons are located on the second side, wherein: The second side includes a button surface and a support surface; The function button is disposed on the button surface; The support surface extends from the distal end of the button surface to the distal end of the first grip portion. The normal of at least a portion of the support surface has a component that points toward the distal end of the first grip and a component that points toward the first side.

2. The operating portion according to claim 1, wherein Along the direction toward the distal end of the first grip portion, the support surface gradually approaches the longitudinal center line of the first grip portion, wherein the longitudinal center line is parallel to the longitudinal direction and passes through the center of the first grip portion.

3. The operating unit as described in claim 2, characterized in that, The angle formed by the support surface and the button surface intersected by the imaginary plane is greater than 100 degrees; and / or The angle between the line of intersection of the supporting surface and the imaginary plane and the plane perpendicular to the longitudinal direction is between 20 and 70 degrees. Wherein: the imaginary plane is parallel to the longitudinal direction and parallel to the axis of the function button.

4. The operating portion according to claim 1, wherein The first side is disposed opposite to the third side, and along the lateral direction from the third side to the first side, the boundary line between the button surface and the support surface gradually approaches the proximal end of the first grip portion.

5. The operating portion according to claim 4, wherein The boundary line has a first endpoint near the first side and a second endpoint near the third side, wherein: The first endpoint is located on the imaginary reference line or closer to the proximal end of the first grip portion than the imaginary reference line, and the second endpoint is closer to the distal end of the first grip portion than the imaginary reference line; and The imaginary reference line is parallel to the lateral direction and tangent to the far end of the function button closest to the first grip.

6. The operating unit as claimed in claim 1, characterized in that, The first side surface and the supporting surface are connected by a first arc surface transition; The third side surface includes a base surface and a protruding surface, the protruding surface protruding from the base surface in a direction away from the first side surface, wherein: Along a circumferential direction surrounding the longitudinal direction, the protruding surface is spaced apart from the second side surface, such that the base surface includes a first base surface connecting the protruding surface and the second side surface; and The first base surface and the supporting surface are connected by a second arc surface.

7. The operating portion according to claim 6, wherein The length of the second arc surface in the longitudinal direction is greater than the length of the first arc surface in the longitudinal direction.

8. The operating portion according to claim 1, wherein The operating part further includes a second gripping part that extends from the distal end of the first gripping part along the longitudinal direction. Along the direction facing the second side of the first grip portion, the button surface protrudes from the second grip portion, and the support surface extends between the button surface and the second grip portion.

9. The operating portion according to claim 1, wherein A rotating handwheel is provided on the third side, wherein: The support surface has a projected profile on an operating plane perpendicular to the axis of the rotating handwheel; The projected profile is located outside the circumcircle of the projection of the rotating handwheel onto the operating plane.

10. The operating portion according to claim 9, wherein The tangent to the projected profile does not intersect the circumcircle.

11. The operating portion according to claim 1, wherein The supporting surface has a projected profile on an imaginary plane, and the tangent of the projected profile intersects the function button located at the farthest end of the function buttons; wherein: the imaginary plane is parallel to the longitudinal direction and parallel to the axis of the function button.

12. The operating unit as claimed in any one of claims 1-11, characterized in that, Along the longitudinal direction, there is a gap between the cable connector and the supporting surface; The longitudinal dimension of the interval is adapted to the width of the user's index finger metacarpophalangeal joint.

13. The operating portion according to claim 12, wherein The cable connection includes a first cable connection segment and a second cable connection segment connected sequentially along the lateral direction, wherein: The first cable connector is connected to the first side of the first grip portion. The second cable connector protrudes from the fourth side along the lateral direction; and The gap is formed by the distal-facing side surface of the second cable connection segment and the supporting surface.

14. The operating portion according to claim 13, wherein The angle between the distal side surface of the second cable connection segment and the longitudinal direction is in the range of 85-95 degrees.

15. An endoscope, characterized by include: The operating unit as described in any one of claims 1-14; as well as An insertion part, the base end of which is connected to the distal end of the operating part.

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