阅读说明：本技术 一种内窥镜操作部及内窥镜 (Endoscope operation portion and endoscope ) 是由 蔡忠武 黄宏辉 于 2020-12-18 设计创作，主要内容包括：本发明公开了一种内窥镜操作部及内窥镜,转轮组件包括手柄壳体,设置在手柄壳体内的弯曲控制机构,所述弯曲控制机构包括设置在手柄壳体内壁上的转轴,所述转轴的外壁上设置有至少一个限位装置,所述限位装置由上至下逐渐向转轴外周延伸,所述转轴外套设有转轮,所述转轮安装在限位装置的下方。转轮从转轴的上端套下,经过限位装置后被限位装置固定在转轴外,不需要额外的连接件将转轮与转轴进行连接,安装的步骤少,操作简单,大大缩短了安装所需要的时间；而且限位装置被设计为上窄下宽的结构,方便转轮套入,易于安装,同样减小了安装的难度；整个转轴和限位装置结构简单,生产难度小。(The invention discloses an endoscope operation part and an endoscope.A rotating wheel assembly comprises a handle shell and a bending control mechanism arranged in the handle shell, wherein the bending control mechanism comprises a rotating shaft arranged on the inner wall of the handle shell, the outer wall of the rotating shaft is provided with at least one limiting device, the limiting device gradually extends to the periphery of the rotating shaft from top to bottom, a rotating wheel is sleeved outside the rotating shaft, and the rotating wheel is arranged below the limiting device. The rotating wheel is sleeved below the upper end of the rotating shaft, passes through the limiting device and then is fixed outside the rotating shaft by the limiting device, an additional connecting piece is not needed for connecting the rotating wheel and the rotating shaft, the mounting steps are few, the operation is simple, and the time required by mounting is greatly shortened; the limiting device is designed to be of a structure with a narrow upper part and a wide lower part, so that the runner is conveniently sleeved in the limiting device, the limiting device is easy to install, and the installation difficulty is also reduced; whole pivot and stop device simple structure, the production degree of difficulty is little.)

1. An endoscope operation portion comprising a handle case (1), characterized in that: also comprises

The handle comprises a rotating shaft (2), wherein the rotating shaft (2) is arranged on the inner wall of a handle shell (1), at least one limiting device (4) is arranged on the outer wall of the rotating shaft (1), and the limiting device (4) gradually extends to the periphery of the rotating shaft (1) from top to bottom;

the rotating wheel (3) is sleeved outside the rotating shaft (2), the rotating wheel (3) is positioned below the limiting device (4), and the limiting device (4) is downwards pressed against the rotating wheel (3) for limiting;

the separation assembly is arranged between the handle shell (1) and the rotating wheel (3), the handle shell (1) and the rotating wheel (3) are pressed against the separation assembly, and the contact area of the rotating wheel (3) and the handle shell (1) is reduced by the separation assembly.

2. The endoscope operating section according to claim 1, characterized in that: the rotating wheel (3) comprises a mounting ring (31) contacted with the outer wall of the rotating shaft (2), and the limiting device (4) is pressed against the mounting ring (31).

3. The endoscope operating section according to claim 2, characterized in that: be provided with slot (21) of indent on the outer wall of pivot (2), stop device (4) set up slot (21) top, be provided with bellied inserted sheet (32) on the inner wall of collar (31), inserted sheet (32) card is gone into carry on spacingly in slot (21), stop device (4) support and press the upper surface at inserted sheet (32).

4. The endoscope operating section according to claim 1, characterized in that: and the limiting device (4) and the rotating shaft (2) are integrally formed.

5. The endoscope operating section according to claim 1, characterized in that: the rotating shaft (2) is provided with a clamping groove, and the limiting device (4) is embedded into the clamping groove and assembled and fixed with the rotating shaft (2).

6. The endoscope operating section according to claim 5 or 6, characterized in that: the limiting device (4) is an elastically deformable flexible part.

7. The endoscope operating section according to claim 1, characterized in that: a plurality of convex patterns (5) are arranged between the rotating shaft (2) and the rotating wheel (3), and the convex patterns (5) are arranged on the inner wall of the rotating wheel (3) and/or the outer wall of the rotating shaft (2) below the limiting device (4).

8. The endoscope operating section according to claim 1, characterized in that: the separation component further comprises an elastically deformable flexible gasket (7) arranged between the handle shell (1) and the rotating wheel (3), and the upper side and the lower side of the flexible gasket (7) are in contact and jacking with the separation component.

9. An endoscope, characterized by: comprising an insertion tube, the distal end of which is fixed to the handle housing (1), and an endoscope operating section according to any one of claims 1 to 8.

Technical Field

The invention relates to the field of medical instruments and equipment, in particular to an endoscope operating part and an endoscope.

Background

A medical endoscope generally includes an insertion portion, a light guide portion, and an operation portion, the operation portion being provided on a handle, and when the medical endoscope is used, the insertion portion of the endoscope is introduced into an organ to be examined, and the bending of the tip end of the insertion portion is controlled by the operation portion, so that the organ can be directly observed. The operation portion mostly comprises a control cable, a rotating wheel and a rotating shaft, the rotating wheel is sleeved on the rotating shaft, one end of the control cable is fixed on the rotating wheel, and the rotating wheel is rotated to change the tightness of two ends of the control cable and change the bending angle of the tail end of the insertion portion.

Usually, the runner cover is established in the pivot and is passed through fastener fixed connection, and installation steps are many, and it is long when having increased processing, and the runner installation back moreover can contact with the casing of operation portion during the rotation, and the fastening force difference of every fastener can lead to the frictional force difference of runner and casing, can influence the user and control the impression of runner, can't keep the uniformity of performance.

Disclosure of Invention

In order to overcome at least one of the above-described problems of the prior art, the present invention provides an endoscope operation section and an endoscope which reduce the number of installation steps and improve the installation efficiency.

The utility model provides an endoscope operation portion, including the handle casing, set up the crooked control mechanism in the handle casing, crooked control mechanism is including setting up the pivot on the handle casing inner wall, be provided with at least one stop device on the outer wall of pivot, stop device from top to bottom extends to the pivot periphery gradually, the pivot overcoat is equipped with the runner, the runner is installed in stop device's below, sets up the partition subassembly between handle casing and runner, and handle casing and runner support the pressure separate the subassembly, separate the area of contact that the subassembly reduced runner and handle casing.

The endoscope operation part has at least the following beneficial effects: the rotating wheel is sleeved below the upper end of the rotating shaft, passes through the limiting device and then is fixed outside the rotating shaft by the limiting device, an additional connecting piece is not needed for connecting the rotating wheel and the rotating shaft, the mounting steps are few, the operation is simple, and the time required by mounting is greatly shortened; the limiting device is designed to be of a structure with a narrow upper part and a wide lower part, so that the runner is conveniently sleeved in the limiting device, the limiting device is easy to install, and the installation difficulty is also reduced; the whole rotating shaft and the limiting device have simple structures and small production difficulty; the area of the separation component is small, the contact area between the separation component and the rotating wheel and the handle shell is small, and the friction force generated when the rotating wheel rotates is reduced.

In some embodiments of the endoscope operating part, the rotating wheel comprises a mounting ring contacted with the outer wall of the rotating shaft, and the limiting device is pressed against the mounting ring; thereby stop device is through pushing down the mounting ring fixed runner, and spacing effectual.

In some embodiments of the endoscope operation portion, an inward-concave slot is formed in an outer wall of the rotating shaft, the limiting device is arranged above the slot, a convex inserting sheet is arranged on an inner wall of the mounting ring, the inserting sheet is clamped into the slot for limiting, and the limiting device is pressed against an upper surface of the inserting sheet; the matching of the inserting pieces and the slots ensures that the connection between the rotating shaft and the rotating wheel is firmer, and the rotating wheel is not easy to be separated from the rotating shaft.

In some embodiments of the above endoscope operating portion, the stopper is integrally formed with the shaft; the integral structure has small production and assembly difficulty and is suitable for batch processing.

In some embodiments of the endoscope operation part, the rotating shaft is provided with a clamping groove, and the limiting device is embedded into the clamping groove and assembled and fixed with the rotating shaft; the split assembly type structure is convenient to install and can be suitable for production and installation of limiting devices in various shapes.

In some embodiments of the endoscope operating part, the limiting device is an elastically deformable flexible part; the flexible piece can take place elastic deformation when the runner installation, makes things convenient for the runner to pass more, has reduced the installation degree of difficulty.

In some embodiments of the endoscope operation part, a plurality of convex patterns are arranged between the rotating shaft and the rotating wheel, and the convex patterns are arranged on the inner wall of the rotating wheel and/or on the outer wall of the rotating shaft below the limiting device; the convex patterns arranged between the inner hole of the rotating wheel and the outer wall of the rotating shaft can reduce the contact area between the rotating wheel and the rotating shaft, thereby achieving the effect of reducing friction force, facilitating the rotating wheel to be sleeved in the rotating shaft and further enabling the rotating wheel to rotate more smoothly during working.

In some embodiments of the endoscope operating part, the separation assembly further comprises an elastically deformable flexible gasket arranged between the handle shell and the rotating wheel, and the upper side and the lower side of the flexible gasket are in contact with and pressed against the separation assembly; the flexible gasket can play the effect of adjusting friction, and the adjustment of different flexible gaskets can adjust the friction between the separation component and the flexible gasket, and can also reduce the wear of the separation component.

An endoscope is also provided, which comprises an insertion tube and the endoscope operation part, wherein the tail end of the insertion tube is fixed on the handle shell.

The endoscope has at least the following beneficial effects: the rotating wheel assembly of the endoscope is low in production difficulty and simple in assembly, so that the endoscope is high in machining efficiency and capacity and suitable for batch production and machining.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. Obviously, the described figures are only some embodiments of the invention, not all embodiments, and other designs and figures can be obtained by those skilled in the art without inventive effort, based on these figures:

FIG. 1 is a schematic view of a first embodiment of the present invention;

FIG. 2 is a cross-sectional view of a first embodiment of the present invention;

FIG. 3 is a cross-sectional view of the rotor of the first embodiment of the present invention;

FIG. 4 is a cross-sectional view of a second embodiment of the present invention;

fig. 5 is a cross-sectional view of a third embodiment of the present invention.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

It should be noted that unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and include, for example, fixed or removable connections or integral connections; the connection can be mechanical connection or electrical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 5, an endoscope operation portion, including handle housing 1, pivot 2 and runner 3, pivot 2 sets up on handle housing 1's inner wall, be provided with at least one stop device 4 on the outer wall of pivot 1, stop device 4 from top to bottom extends to the circumference of pivot 1 outwards gradually, is exactly that stop device 4 is crescent from top to bottom at the radial width of pivot 2, 3 covers of runner are established outside pivot 2, and runner 3 is located stop device 4 below, and stop device 4 supports downwards to press runner 3 to carry out spacingly. The handle is characterized in that a separation assembly is further arranged and arranged between the handle shell 1 and the rotating wheel 3, the handle shell 1 and the rotating wheel 3 are abutted against and pressed against the separation assembly, the separation assembly is abutted against and contacted with the rotating wheel 3 and the handle shell 1, the area of the separation assembly is small, the area of the separation assembly in contact with the rotating wheel 3 and the handle shell 1 is small, and friction force generated when the rotating wheel 3 rotates is reduced. When the contact surface between the rotating wheel 3 and the handle shell 1 is large, the friction force can be changed due to different roughness degrees of the contact surface, so that the smooth degree of the rotation of the rotating wheel 3 can be greatly influenced. The separation assembly is simple in structure, the difficulty of production and processing cannot be increased, the contact of the separation assembly and the rotating wheel 3 and/or the handle shell 1 is changed from surface contact into line contact or point contact, friction force is reduced, and the stable quality of a product can be guaranteed.

Referring to the first, second and third embodiments, the position-limiting device 4 is usually disposed at the uppermost end of the rotating shaft 2, so that the length of the rotating shaft 2 can be shortened and the volume of the handle housing 1 can be reduced. Stop device 4 includes the bottom surface with runner 2 contact, still includes and intersects the global that forms the contained angle with the bottom surface, and global in 3 embodiments is the plane, and when actual design production, global still can be the cambered surface of evagination or indent, or various curved surfaces.

Compared with the original method of connecting the rotating wheel 3 and the rotating shaft 2 by using fasteners such as screws or nuts, the method has the advantages that the rotating wheel 3 is sleeved below the upper end of the rotating shaft 2 and is pressed downwards by the limiting device 4 after passing through the limiting device 4, the rotating wheel 3 is fixed outside the rotating shaft 2, the rotating wheel 3 is connected with the rotating shaft 2 without an additional connecting piece, the mounting steps are few, the operation is simple, and the time required by mounting is greatly shortened; the limiting device 4 is designed to be of a structure with a narrow upper part and a wide lower part, so that the rotating wheel 3 is conveniently sleeved in the limiting device, the limiting device is easy to install, and the installation difficulty is also reduced; whole pivot 2 and stop device 4 simple structure, the production degree of difficulty is little.

The rotating wheel 3 comprises a mounting ring 31 contacted with the outer wall of the rotating shaft 2, and the limiting device 4 is pressed against the mounting ring 31. Thereby stop device 4 is through pushing down mounting ring 31 fixed runner 3, and spacing is effectual.

Referring to the first embodiment, be provided with the slot 21 of indent on the outer wall of pivot 2, stop device 4 sets up slot 21 top, be provided with bellied inserted sheet 32 on the inner wall of collar 31, inserted sheet 32 card is gone into carry out spacingly in the slot 21, stop device 4 supports presses the upper surface at inserted sheet 32. Stop device 4 is bellied for slot 21, and stop device 4 is parallel and level with the outer wall of pivot 2, makes things convenient for runner 3 to embolia. The insertion sheet 32 and the slot 21 can limit the vertical displacement of the rotating wheel 3, so that the rotating wheel 3 is more firmly installed and is not easy to fall off from the rotating shaft 2. The separating component is an annular convex block 6, the lower surface of the convex block 6 is semicircular, the convex block 6 is integrally formed along the lower side of the rotating wheel 3 to form an arc-shaped lower end surface, and the convex block 6 is pressed on the handle shell 1.

Referring to the second embodiment and the third embodiment, preferably, the lower end of the inner hole of the rotating wheel 3 may further be provided with a counter bore 8, and the opening of the counter bore 8 is gradually increased from top to bottom, so that the limiting device 4 enters the inner hole of the rotating wheel 3 more smoothly, the resistance of the rotating wheel 3 passing through the limiting device 4 is reduced, and the difficulty of installation is reduced. The separating components are a plurality of point-shaped lugs 6, in the second embodiment, the lugs 6 are arranged on the handle shell 1, in the third embodiment, the lugs 6 are simultaneously arranged on the rotating wheel 3 and the handle shell 1, and the lugs 6 are in one-to-one up-and-down correspondence. The convex block 6 can be arranged into a plurality of strip structures or curved arc structures and other different shapes according to requirements.

In an embodiment not shown in the drawings, the partition assembly may further include a blocking ring movably disposed between the handle housing 1 and the runner 3, and upper and lower end surfaces of the blocking ring are respectively in contact with the lower end of the runner 3 and the inner wall of the handle housing 1. The separation ring structure is simple, easy to install and good in separation effect, and the rotating wheel 3 rotates smoothly. In order to prevent the blocking ring from being displaced, it is preferable to provide a groove in which the blocking ring is placed on the lower end surface of the runner 3 and the inner wall of the handle housing 1.

The separation component further comprises an elastically deformable flexible gasket 7 arranged between the handle shell 1 and the rotating wheel 3, and the upper side and the lower side of the flexible gasket 7 are in contact with and pressed against the separation component. The flexible gasket 7 is arranged on the inner wall of the handle shell 1, so that the lower convex block is connected with the upper end face of the flexible gasket 7, or the flexible gasket 7 can also be arranged on the lower end face of the rotating wheel 3, so that the upper convex block is connected with the lower end face of the flexible gasket 7, or the flexible gasket 7 is movably sleeved outside the mounting shaft 2, and the upper convex block and/or the lower convex block are respectively connected with the upper end face and/or the lower end face of the flexible gasket 7.

The flexible gasket 7 can play the effect of adjusting friction power, and the different flexible gasket 7 of adjustment can be adjusted and separated the frictional force between subassembly and the flexible gasket 7, selects suitable flexible gasket 7 to make the operator control runner 3 pivoted dynamics moderate, can not the frictional force undersize slide easily, can not too big difficult to rotate of frictional force yet, has improved user's use impression, can also reduce the wearing and tearing of separating the subassembly.

In the embodiment of the invention, the limiting device 4 and the rotating shaft 2 are integrally formed, so that the integral structure is low in production and assembly difficulty and suitable for batch processing. In some other embodiments, a clamping groove is formed in the rotating shaft 2, and the limiting device 4 is embedded in the clamping groove and assembled and fixed with the rotating shaft 2. The split assembly type structure is convenient to install and can be suitable for production and installation of limiting devices in various shapes.

Stop device 4 is elastically deformable's flexible piece, and the flexible piece can take place elastic deformation and inwards contract when runner 3 is installed on pivot 2, makes things convenient for 3 downstream of runner more, has reduced the installation degree of difficulty.

A plurality of convex patterns 5 are arranged between the rotating shaft 2 and the rotating wheel 3, and the convex patterns 5 are arranged on the inner wall of the rotating wheel 3 and/or the outer wall of the rotating shaft 2 below the limiting device 4. The burr 5 that sets up on the inner wall of runner 3 or the outer wall of pivot 2 can reduce the area of contact between runner 3 and the pivot 2 to reach the effect that reduces friction power, make things convenient for runner 3 outside pivot 2, can also make 3 during operations of runner rotate more smoothly. Preferably, the ribs 5 are arranged in a ring shape, and the ring-shaped ribs 5 are integrally formed on the outer wall of the rotating shaft 2 at intervals up and down, so that the processing is more convenient.

An endoscope includes an insertion tube, the distal end of which is fixed to the handle case 1, and any one of the above-described endoscope operation sections. The rotating wheel assembly of the endoscope is low in production difficulty and simple in assembly, so that the endoscope is high in machining efficiency and capacity and suitable for batch production and machining.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.