CN212394877U

CN212394877U - Endoscope tip structure

Info

Publication number: CN212394877U
Application number: CN202020416365.3U
Authority: CN
Inventors: 冯正
Original assignee: Zhuhai Wantu Medical Technology Co ltd
Current assignee: Zhuhai Wantu Medical Technology Co ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2021-01-26
Anticipated expiration: 2030-03-27

Abstract

The utility model discloses an endoscope tip structure, include cylindrical core and cup joint in the shell of core periphery, still include camera module, lighting assembly and working channel, the core is equipped with front end and rear end, the front end has first plane and first curved surface, first plane is enclosed by arc limit chord edge, chord edge department is equipped with the circular arc chamfer and extends to the side of core and forms first curved surface, the front end is equipped with and is used for the dress to inlay camera module's first mounting hole, is used for the dress to inlay lighting assembly's second mounting hole and is used for the dress to inlay working channel's third mounting hole. The utility model discloses a front end of the core of preceding end structure has improved into the curved surface by traditional circular plane and has combined together with the plane, helps first end can get into human or industrial equipment pipeline more smoothly, reduces the damage to the pipeline pipe wall of the stimulation of human organ mucosa/equipment inside.

Description

Endoscope tip structure

Technical Field

The utility model relates to the technical field of medical equipment, in particular to endoscope tip structure.

Background

The design rule of the endoscope requires that the diameter of the front end of the endoscope is matched with the cavity to be entered, if the diameter is too large, the cavity is easy to damage, and if the diameter is too small, the endoscope is easy to shake and difficult to ensure the stability. Also, the distal end of the endoscope typically incorporates a camera assembly, a light source, and a working channel, wherein the working channel requires sufficient space for instruments to pass therethrough. Therefore, how to make the tip structure easily enter the cavity and ensure the stability and the stability of the integrated system is always the focus of designing the endoscope.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an endoscope tip structure to realize that the endoscope also can easily get into the technological effect of chamber way under the maximum dimension that the model is injectd.

The endoscope tip structure comprises a cylindrical core, a shell sleeved on the periphery of the core, a camera shooting assembly, an illuminating assembly and a working channel, wherein the core is provided with a front end and a rear end, the front end is provided with a first plane and a first curved surface, the first plane is surrounded by an arc edge and a chord edge, the chord edge is provided with an arc chamfer and extends towards the side surface of the core to form the first curved surface, and the front end is provided with a first mounting hole for embedding the camera shooting assembly, a second mounting hole for embedding the illuminating assembly and a third mounting hole for embedding the working channel.

The lens window of the camera shooting assembly, the lamp bead of the lighting assembly or the tail end of the optical fiber are difficult to be made into curved surfaces, and if the front end of the front end structure is made into a curved surface, the parts are difficult to be arranged; if the front ends of the front end structures are all made into circular planes, parts such as lens window sheets, lamp beads and the like can be arranged in various reasonable modes at will. And the utility model discloses then take the mode that curved surface and plane combine, settle the part that is difficult to settle at the curved surface in the first plane that is enclosed by arc limit and chord edge, and first curved surface then can help the tip structure to get into the chamber way more smoothly. Preferably, therefore, the first and second mounting holes are both located in the first plane.

Preferably, a line connecting the central axis of the third mounting hole and the central axis of the first mounting hole passes through the central axis of the core. The third mounting hole is only for embedding the working channel and therefore need not be arranged entirely in the first plane but may be arranged partly or entirely in the first curved surface.

Preferably, there are two second mounting holes, and the two second mounting holes are symmetrically arranged about a line connecting the central axis of the third mounting hole and the central axis of the first mounting hole. The double lighting assemblies can ensure that the camera assembly obtains sufficient lighting effect during working, and the symmetrical arrangement can more ensure that the illumination distribution is uniform.

Preferably, the first mounting hole is a through rectangular hole. The through rectangular hole is suitable for installing an integrated micro CCD camera/a micro CMOS camera/an optical imaging fiber.

Preferably, the front end edge of the housing is chamfered.

Preferably, the endoscope tip structure is progressively larger in size from the front end to the rear end.

Preferably, the core is made of hard materials, and the hardness of the hard members is more than or equal to 70D. The strength of the inner wall of the front end structure can be improved by using hard materials, so that the aim of reducing gaps among the mounting holes is fulfilled.

The utility model discloses a front end of the core of preceding end structure has improved into the curved surface by traditional circular plane and has combined together with the plane, helps first end can get into human or industrial equipment pipeline more smoothly, reduces the damage to the pipeline pipe wall of the stimulation of human organ mucosa/equipment inside.

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. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.

FIG. 1 is an exploded view of the distal end structure of the endoscope described in embodiment 1;

FIG. 2 is an assembly view of the structure of the distal end of the endoscope described in embodiment 1;

fig. 3 is a full sectional view of the distal end structure of the endoscope described in embodiment 1.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Embodiment 1, as shown in fig. 1 to 3, an endoscope tip structure includes a columnar core 1, a shell 2 sleeved on an outer periphery of the core 1, and further includes a camera module 3, an illumination module 4, and a working channel 5, the core 1 is provided with a front end and a rear end, the front end has a first plane 11 and a first curved surface 12, the first plane 11 is defined by an arc edge and a chord edge, the chord edge is provided with an arc chamfer and extends to a side surface of the core 1 to form the first curved surface 12, and the front end is provided with a first mounting hole 13 for mounting and embedding the camera module 3, a second mounting hole 14 for mounting and embedding the illumination module 4, and a third mounting hole 15 for mounting and embedding the working channel 5. The image pickup module 3 in the present embodiment includes a lens louver 31, a lens 32, a photosensitive chip 33, and a signal wire 34. The lighting assembly 4 comprises an LED lamp bead 41 and an LED lead 42; or may be replaced by a combination of illumination light and light-guiding fibers. The working channel 5 is composed of a working channel connecting pipe 51 and a working channel bent pipe 52. The lens window 31 of the camera module 3 and the LED lamp bead 41 of the lighting module are difficult to be curved, so the first mounting hole 13 and the second mounting hole 14 corresponding to the two components are arranged in the first plane 11. The arcuate configuration of the first curved surface 12 facilitates a smoother entry of the tip structure into the lumen, yet may be disposed within the first curved surface 12 since the working channel 5 does not require special provisions when the endoscope is advanced into the lumen.

The line connecting the central axis of the third mounting hole 15 and the central axis of the first mounting hole 13 passes through the central axis of the core 1. Meanwhile, the two second mounting holes 14 are symmetrically arranged on two sides of the connecting line, so that the front end of the endoscope can obtain a bilateral lighting effect after the lighting assembly 4 is mounted, and the camera assembly 3 has a good lighting environment when working.

Since commercially available integrated micro CCD cameras or micro CMOS cameras are usually manufactured in a rectangular shape, designing the first mounting hole 13 as a through rectangular hole slightly larger than the photo-sensing chip can maximally fit the requirements of the camera module 3.

Preferably, the front end edge of the housing 2 is chamfered to also facilitate endoscope entry into the lumen.

Most of the tip structures of the traditional endoscopes are made of plastic materials with low sensitization, and the endoscope has the advantages of low raw material price and easiness in preparation (injection molding). In practice, the strength of the tip structure is sacrificed, and therefore, the space between the mounting holes must have a sufficient thickness to ensure the working strength, so that the tip structure is difficult to be reduced. The core 1 of the present embodiment is made of hard materials, such as high-strength ceramics, high-strength engineering plastics, or high-strength alloys, so that the hardness of the core 1 is greater than or equal to 70D, thereby achieving the purpose of reducing the gap between the mounting holes.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An endoscope tip structure characterized in that: including cylindrical core and cup joint in the shell of core periphery, still include subassembly, lighting components and working channel of making a video recording, the core is equipped with front end and rear end, the front end has first plane and first curved surface, first plane is enclosed by arc limit and chord edge, chord edge department is equipped with the circular arc chamfer and extends to the side of core and forms first curved surface, the front end is equipped with the first mounting hole that is used for the dress to inlay the subassembly of making a video recording, is used for the dress to inlay the second mounting hole of lighting components and is used for the dress to inlay the third mounting hole of working channel.

2. The endoscope tip structure according to claim 1, wherein: the first mounting hole is located in the first plane.

3. The endoscope tip structure according to claim 2, wherein: and a connecting line of the central axis of the third mounting hole and the central axis of the first mounting hole passes through the central axis of the core.

4. The endoscope tip structure according to claim 2 or 3, wherein: the second mounting hole is located in the first plane.

5. The endoscope tip structure according to claim 4, wherein: the second mounting hole has two, and sets up with the line symmetry of the axis of first mounting hole about the axis of third mounting hole.

6. The endoscope tip structure according to claim 1, wherein: the first mounting hole is a straight-through rectangular hole.

7. The endoscope tip structure according to claim 1, wherein: the edge of the front end of the shell is provided with a chamfer.

8. The endoscope tip structure according to claim 1 or 7, wherein: the size of the endoscope front end structure is gradually increased from the front end to the back end.

9. The endoscope tip structure according to claim 1, wherein: the core is a hard member, and the hardness of the hard member is more than or equal to 70D.