A rotating structure for an endoscope

Abstract

This utility model provides a rotating structure for an endoscope, including a handheld assembly, a rotating assembly, and an insertion catheter. The rotating assembly includes a housing, a working channel tube, an inlet connector, and a fixing base. The upper end of the housing is rotatably connected to the handheld assembly, and the lower end of the housing is fixed to the fixing base, which is located inside the housing. The inlet connector is disposed on the surface of the housing, and the working channel tube is located inside the housing, with one end of the working channel tube connected to the inlet connector. The insertion catheter is fixed to the fixing base, and the inlet connector and the working channel tube rotate with the insertion catheter without the working channel tube twisting, thereby ensuring the patency of the working channel tube.

Description

Technical Field

[0001] This utility model relates to the field of endoscope technology, and in particular to a rotating structure for endoscopes. Background Technology

[0002] As one of the main diagnostic instruments in the medical field, medical endoscopes can be inserted into human tissues or organs to transmit images of the corresponding parts in real time for diagnosis, and can also insert instruments of appropriate size to achieve the function of treatment.

[0003] For example, the endoscope disclosed in publication number CN107773203A has a rigid connector connected between the handle and the insertion catheter. The rigid connector has a working channel inside. The inlet of the working channel is located on the surface of the handle, and the outlet of the working channel is connected to the insertion catheter. Instruments are introduced from the inlet of the working channel and enter the insertion catheter through the outlet of the working channel, and are guided by the insertion catheter to a designated position in the body cavity.

[0004] The rigid connector and the handle are fixedly connected, and the inlet of the working channel is fixed to the handle. When the tube is rotated and inserted, the working channel tube is twisted, affecting the smoothness of the working channel. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a rotating structure for endoscopes, in which the working channel inlet rotates together with the inserted catheter, thus avoiding bending or twisting of the working channel tube during rotation and affecting the unobstructed flow of the working channel.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A rotating structure for an endoscope, comprising: Handheld components; A rotating assembly includes a housing, a working channel tube, an inlet connector, and a fixed base. The upper end of the housing is rotatably connected to the handheld assembly, and the lower end of the housing is fixed to the fixed base, which is located inside the housing. The inlet connector is disposed on the surface of the housing, and one end of the working channel tube is connected to the inlet connector. An insertable catheter is fixed to the mounting base.

[0007] In a preferred embodiment, the housing includes: The upper shell has a slot on its outer wall, and the handheld component has a strip on its inner wall, which is disposed in the slot.

[0008] In a preferred embodiment, the housing further includes: The middle shell is connected to the upper shell. The outer wall of the middle shell is provided with an inclined surface, and the inlet connector is provided on the inclined surface. The fixing seat is located inside the middle shell.

[0009] In a preferred embodiment, the housing further includes: The lower shell is connected to the middle shell at its upper end, and the lower end of the lower shell is used to insert a conduit. The diameter of the lower shell gradually decreases from top to bottom.

[0010] In a preferred embodiment, the fixing base includes: A tube body, into which the insertion conduit is inserted; An extension plate, the interior of which is connected to the tube body, and the exterior of which is inserted into the inner wall of the housing; The fixing seat has a through hole, and the fixing seat is fixed to the housing by means of fastener connection through the through hole; A guide groove is provided for placing the working channel tube and guiding it into the insertion conduit.

[0011] In a preferred embodiment, the inlet connector portion is embedded within the surface of the housing.

[0012] In a preferred embodiment, one end of the working channel tube is fixed to the inlet connector, and the working channel tube passes through the fixing seat and enters the insertion conduit.

[0013] In a preferred embodiment, a limiting component is further included, the limiting component comprising: A stop piece is disposed on the inner wall of the handheld assembly. A positioning piece is disposed at the upper end of the housing; The positioning piece is inserted into the interior of the handheld component, and the positioning piece and the stop piece limit its movement.

[0014] In a preferred embodiment, the stop piece is fan-shaped and the angle of the stop piece is 120°.

[0015] In a preferred embodiment, the limiting component further includes: A zero-position post is disposed on the inner wall of the handheld assembly, and the zero-position post is opposite to the stop plate; The positioning plate has a positioning hole, which is adapted to the zero-position column.

[0016] Compared with existing technologies, this technical solution has the following advantages: The insertion conduit is fixed to the mounting base of the rotating assembly, and the portion of the working channel tube inside the housing of the rotating assembly is fixed relative to the housing of the rotating assembly. The inlet connector, insertion conduit, working channel tube, and housing are integrated as a whole and rotate relative to the handheld assembly. This allows the inlet connector and the working channel tube to rotate with the insertion conduit without twisting the working channel tube, thus ensuring the unobstructed flow of the working channel tube.

[0017] When the positioning hole of the positioning piece is matched with the zero-position post, the rotating structure is in the zero position. By setting the stop piece and the positioning piece, the rotation angle of the rotating component relative to the handheld component can be set.

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the rotating structure for the endoscope described in this utility model; Figure 2 This is a schematic diagram showing the cooperation of the stop plate, positioning plate, and zero-position post of the rotating structure for endoscopes described in this utility model; Figure 3 This is a schematic diagram showing the cooperation between the positioning plate and the zero-position post in the rotating structure for endoscopes described in this utility model; Figure 4 This is a schematic diagram showing the disengagement of the positioning plate and zero-position column in the rotating structure for endoscopes described in this utility model; Figure 5 This is a schematic diagram of the structure of the rotating component described in this utility model.

[0020] In the diagram: 100 Handheld component, 100a Card strip, 200 Rotating component, 210 Housing, 211 Upper housing, 211a Card slot, 212 Middle housing, 212a Inclined surface, 213 Lower housing, 220 Working channel tube, 230 Inlet connector, 240 Fixing base, 241 Tube body, 242 Extension plate, 243 Fixing base through hole, 244 Guide groove, 300 Insertion guide tube, 410 Stop plate, 420 Positioning plate, 421 Positioning hole, 430 Zero position post. Detailed Implementation

[0021] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0022] like Figure 1As shown, the rotating structure for the endoscope includes: Handheld component 100; The rotating assembly 200 includes a housing 210, a working channel tube 220, an inlet connector 230, and a fixed base 240. The upper end of the housing 210 is rotatably connected to the handheld assembly 100, and the lower end of the housing 210 is fixedly provided with the fixed base 240, which is located inside the housing 210. The inlet connector 230 is disposed on the surface of the housing 210, and one end of the working channel tube 220 is connected to the inlet connector 230. Insert a catheter 300, which is fixed on the fixing seat 240.

[0023] The insertion catheter 300 is used for insertion into a body cavity and is fixed on the mounting base 240 of the rotating assembly 200. The working channel tube 220 is used to introduce instruments or the like into the insertion catheter 300, and the portion of the working channel tube 220 inside the housing 210 of the rotating assembly 200 is fixed relative to the housing 210. The inlet connector 230, the insertion catheter 300, the working channel tube 220, and the housing 210 are considered as a whole and rotate relative to the handheld assembly 100. In this way, the inlet connector 230 and the working channel tube 220 rotate with the insertion catheter 300 without the working channel tube 220 twisting, thereby ensuring the patency of the working channel tube 220.

[0024] like Figure 1 As shown, the handheld assembly 100 is for holding and has an opening at its lower end so that the upper end of the housing 210 can be inserted into the interior of the handheld assembly 100 from the lower end of the handheld assembly 100.

[0025] The upper end of the housing 210 is rotatably connected to the handheld assembly 100. (Reference) Figure 1 and Figure 5 The housing 210 includes an upper shell 211, which is located inside the handheld assembly 100. A slot 211a is provided on the outer wall of the upper shell 211, and a retaining strip 100a is provided on the inner wall of the handheld assembly 100. The retaining strip 100a is disposed in the slot 211a, thereby achieving axial positioning of the upper shell 211 and the handheld assembly 100, while allowing the upper shell 211 to rotate relative to the handheld assembly 100.

[0026] The card strip 100a and the card slot 211a are adapted to each other and can be annular. There are multiple card strips 100a and card slots 211a, and they correspond one-to-one. Multiple card strips 100a are spaced apart along the length direction of the handheld component 100, and similarly, multiple card slots 211a are spaced apart along the length direction of the upper shell 211.

[0027] It should be noted that the upper shell 211 or the handheld component 100 may be made of an elastic material, such as rubber, to facilitate the assembly of the upper shell 211 into the handheld component 100. Alternatively, the handheld component 100 may be divided into two semicircles that enclose the upper shell 211 and are secured by fasteners, heat fusion, or other means, including clips and screws.

[0028] like Figure 1 The housing 210 further includes a middle housing 212, which is connected to the lower end of the upper housing 211. The middle housing 212 and the upper housing 211 are internally connected, and the middle housing 212 is located outside the handheld assembly 100.

[0029] The outer wall of the inner shell 212 is provided with an inclined surface 212a, on which the inlet connector 230 is disposed. The inlet connector 230 is partially embedded in the surface of the shell 210. Specifically, the inlet connector 230 has a tubular structure, with its lower end connected to the inclined surface 212a and its upper end exposed for insertion of instruments, etc. The lower end of the inlet connector 230 can be connected to the inclined surface 212a by means of screwing, plugging, or other methods.

[0030] refer to Figure 1 The working channel pipe 220 is located inside the housing 210. One end of the working channel pipe 220 is fixed to the inlet connector 230. The working channel pipe 220 and the inlet connector 230 can be connected by means of sleeve or other methods.

[0031] like Figure 1 The housing 210 further includes a lower housing 213, the upper end of which is connected to the middle housing 212. That is, the middle housing 212 is connected between the upper housing 211 and the lower housing 213, and the lower housing 213 is also located outside the handheld assembly 100. Furthermore, the upper housing 211, the middle housing 212, and the lower housing 213 are internally connected.

[0032] The diameter of the lower shell 213 gradually decreases from top to bottom. The fixing seat 240 is disposed inside the middle shell 212. The lower end of the lower shell 213 is used to insert the catheter 300, so that the catheter 300 is fixed to the fixing seat 240. Specifically, the fixed end of the catheter 300 extends from the lower end of the lower shell 213 into the interior of the lower shell 213 and connects to the fixing seat 240. The portion of the catheter 300 other than the fixed end is located outside the shell 210 and is used for insertion into the body cavity. The fixed end of the catheter 300 and the fixing seat 240 can be fixed by means of sleeve, snap-fit, etc.

[0033] refer to Figure 1 The other end of the working channel tube 220 is inserted into the fixed seat 240, specifically into the fixed end of the insertion catheter 300, so that instruments and the like enter the working channel tube 220 from the inlet connector 230 and are inserted into the insertion catheter 300.

[0034] like Figure 1 As shown, the fixing base 240 includes: Tube body 241, wherein the insertion conduit 300 is inserted into the tube body 241; Extension plate 242, the interior of which is connected to the tube body 241, and the exterior of which is inserted into the inner wall of the housing 210; The fixing seat 240 is fixed to the housing 210 by means of fastener connection through the fixing seat through hole 243; The guide groove 244 is used to place the working channel tube 220 and guide the working channel tube 220 into the insertion catheter 300.

[0035] The inner wall of the middle shell 212 of the housing 210 is provided with a slot corresponding to the through hole 243 of the fixing seat, for connecting and fixing with the fixing seat 240 by fasteners. The housing 210 may also be divided into two semicircles, which enclose the fixing seat 240 and are connected together by fasteners and injection molding.

[0036] like Figures 2 to 4 As shown, the rotating structure for the endoscope also includes a limiting component 400, which includes: A stop piece 410 is disposed on the inner wall of the handheld assembly 100. Positioning piece 420, the positioning piece 420 is disposed at the upper end of the housing 210; The positioning piece 420 is inserted into the interior of the handheld component 100, and the positioning piece 420 and the stop piece 410 limit the movement.

[0037] By limiting the position of the stop piece 410 and the positioning piece 420, the rotation angle of the rotating assembly 200 relative to the handheld assembly 100 can be set. For example, the stop piece 410 is fan-shaped, and the two sides of the fan shape serve as the resting points of the positioning piece 420. The included angle between the two sides of the fan shape of the stop piece 410 is 120°, that is, the angle of the stop piece 410 is 120°. At this time, the rotation angle of the rotating assembly 200 is 240°.

[0038] Continue to refer to Figures 2 to 4 The limiting component 400 further includes: Zero position post 430 is disposed on the inner wall of the handheld assembly 100, and the zero position post 430 is opposite to the stop piece 410; The positioning plate 420 has a positioning hole 421, which is adapted to the zero position post 430.

[0039] The zero-position post 430 and the stop piece 410 are directly opposite each other, with the zero-position post 430 located above the stop piece 410. The positioning piece 420 is a spring-loaded structure, exhibiting elasticity. The zero-position post 430 is conical or semi-circular. When the zero-position post 430 is located within the positioning hole 421 of the positioning piece 420, the rotating structure is in its zero-position when not rotating, at which point the positioning piece 210 exhibits no elastic deformation.

[0040] When the rotating structure rotates from the zero position to the left or right, the positioning plate 420 is elastic, causing the zero-position post 430 to move away from the positioning hole 421 and lift the positioning plate 420, thus deforming it. At this time, the rotational resistance increases. When the zero-position post 430 completely disengages from the positioning hole 421, the rotational resistance decreases. Conversely, when the rotating structure rotates from a large angle away from the zero position to the zero position, the rotational resistance first increases and then decreases. By observing the change in resistance during rotation, doctors can easily adjust the rotating structure to the zero position.

[0041] When the positioning piece 420 contacts one side of the fan-shaped stop piece 410, the rotation is at its maximum and cannot be rotated to a larger angle due to the restriction of the stop piece 410.

[0042] In summary, the insertion conduit 300 is fixed on the fixing base 240 of the rotating assembly 200, and the portion of the working channel tube 220 inside the housing 210 of the rotating assembly 200 is fixed relative to the housing 210. The inlet connector 230, the insertion conduit 300, the working channel tube 220, and the housing 210 are integrated as a whole and rotate relative to the handheld assembly 100. This allows the inlet connector 230 and the working channel tube 220 to rotate with the insertion conduit 300 without twisting, thus ensuring the unobstructed flow of the working channel tube 220. When the positioning hole 421 of the positioning plate 421 is matched with the zero-position post 430, the rotating structure is in the zero position. By setting the stop plate 410 and the positioning plate 420, the rotation angle of the rotating assembly 200 relative to the handheld assembly 100 can be set.

[0043] The embodiments described above are only used to illustrate the technical ideas and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. The scope of patent application of this utility model should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in this utility model still fall within the patent scope of this utility model.

Claims

1. A rotating structure for an endoscope, characterized in that, include: Handheld component (100); A rotating assembly (200) includes a housing (210), a working channel tube (220), an inlet connector (230), and a fixed base (240). The upper end of the housing (210) is rotatably connected to the handheld assembly (100), and the lower end of the housing (210) is fixed with the fixed base (240). The fixed base (240) is located inside the housing (210). The inlet connector (230) is disposed on the surface of the housing (210), and one end of the working channel tube (220) is connected to the inlet connector (230). Insert a catheter (300), which is fixed on the fixing seat (240).

2. The rotation structure for an endoscope according to claim 1, wherein The housing (210) includes: The upper shell (211) has a card slot (211a) on its outer wall and a card strip (100a) on its inner wall, which is located in the card slot (211a).

3. The rotation structure for an endoscope according to claim 2, wherein The housing (210) further includes: The middle shell (212) is connected to the upper shell (211). The outer wall of the middle shell (212) is provided with a slope (212a). The inlet connector (230) is provided on the slope (212a). The fixing seat (240) is located inside the middle shell (212).

4. The rotation structure for an endoscope according to claim 3, wherein The housing (210) further includes: The lower shell (213) is connected to the middle shell (212) at its upper end. The lower end of the lower shell (213) is used to insert a conduit (300) into the shell. The diameter of the lower shell (213) gradually decreases from top to bottom.

5. The rotation structure for an endoscope according to claim 1, wherein The mounting base (240) includes: The tube body (241) is into which the insertion conduit (300) is inserted. An extension plate (242) is connected inside to the tube body (241), and the outside of the extension plate (242) is inserted into the inner wall of the housing (210). The fixing seat (240) is fixed to the housing (210) by means of fastener connection through the fixing seat through hole (243); The guide groove (244) is used to place the working channel tube (220) and guide the working channel tube (220) into the insertion conduit (300).

6. The rotation structure for an endoscope as set forth in claim 1, wherein The inlet connector (230) is partially embedded in the surface of the housing (210).

7. The rotating structure for an endoscope as set forth in claim 1, characterized by One end of the working channel tube (220) is fixed on the inlet connector (230), and the working channel tube (220) passes through the fixing seat (240) and enters the insertion conduit (300).

8. The rotating structure for an endoscope as set forth in claim 1, characterized by It also includes a limiting component (400), the limiting component (400) comprising: A stop piece (410) is disposed on the inner wall of the handheld assembly (100). A positioning piece (420) is disposed at the upper end of the housing (210); The positioning piece (420) is inserted into the interior of the handheld assembly (100), and the positioning piece (420) and the stop piece (410) limit the movement.

9. The rotating structure for an endoscope as set forth in claim 8, characterized by The stop piece (410) is fan-shaped and the angle of the stop piece (410) is 120°.

10. The rotating structure for an endoscope as set forth in claim 8, characterized by The limiting component (400) further includes: Zero position post (430), the zero position post (430) is disposed on the inner wall of the handheld assembly (100), the zero position post (430) is opposite to the stop piece (410); The positioning plate (420) has a positioning hole (421) which is adapted to the zero position post (430).

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