Connecting structure for bending part of endoscope

Abstract

The utility model discloses an endoscope bending part connecting structure which comprises an inserting pipe and a bending pipe and further comprises a connecting piece, the connecting piece comprises a base, a first connecting base located on one side of the base and a second connecting base located on the other side of the base, and the base, the first connecting base and the second connecting base are all in a hollow ring shape. The first connecting seat is sleeved with the inserting pipe, the second connecting seat is sleeved with the bent pipe, the outer diameter of the first connecting seat and the outer diameter of the second connecting seat are smaller than the outer diameter of the base, and the outer diameter of the inserting pipe, the outer diameter of the base and the outer diameter of the bent pipe are consistent. The inserting pipe and the bent pipe can be directly fixed through the connecting piece, assembling of the inserting pipe and the bent pipe is more efficient, the outer diameter of the base of the connecting piece is consistent with the outer diameter of the inserting pipe and the outer diameter of the bent pipe, the outer diameter of the connecting position of the inserting pipe and the bent pipe is the same after assembling, no protrusion exists, and the size consistency of the inserting part is kept; and the production efficiency and the production quality of products can be improved.

Description

Technical Field

[0001] The utility model relates to the field of medical device equipment, in particular to a connecting structure of an endoscope bending part. Background Art

[0002] An endoscope is an instrument that enters the body through a natural body cavity for detection or treatment. An endoscope usually includes a handle, an insertion tube, and a bending part. The bending part is fixed at the front end of the insertion tube. Based on this usage scenario, both the bending part and the insertion tube are required to have as small an outer diameter as possible.

[0003] At present, some of the insertion tubes and bending parts are connected by gluing, and some are fixed by a ring-shaped connecting piece and then glued or heat-melted. The operation steps are numerous, the assembly efficiency is relatively low, and the appearance consistency of the heat melting is low. There is often a phenomenon of glue overflow, resulting in inconsistent outer diameters of the insertion tube and the bending part, making it difficult to install, and prone to problems of unqualified product dimensions, reducing the output. Summary of the Utility Model

[0004] In order to overcome at least one of the above technical problems in the prior art, the utility model provides a connecting structure of an endoscope bending part that can quickly fix and connect an insertion tube and a bending part and keep the outer diameter of the connection part consistent.

[0005] A connecting structure of an endoscope bending part is provided, which includes an insertion tube and a bending tube, and also includes a connecting piece. The connecting part includes a base, a first connecting seat located on one side of the base, and a second connecting seat located on the other side of the base. The base, the first connecting seat, and the second connecting seat are all hollow rings. The insertion tube is sleeved outside the first connecting seat, the bending tube is sleeved outside the second connecting seat. The outer diameters of the first connecting seat and the second connecting seat are smaller than the outer diameter of the base. The outer diameters of the insertion tube, the base, and the bending tube are the same.

[0006] The above connecting structure of the endoscope bending part has at least the following beneficial effects: The insertion tube and the bending tube can be directly fixed through the connecting piece, making the assembly of the insertion tube and the bending tube more efficient. Moreover, since the outer diameters of the base of the connecting piece, the insertion tube, and the bending tube are the same, there is no protrusion at the connection of the insertion tube and the bending tube after assembly, maintaining the dimensional consistency of the insertion part, and improving the production efficiency and production quality of the product.

[0007] In some embodiments of the above connecting structure of the endoscope bending part, a positioning block is arranged outside the second connecting seat, and a positioning groove is arranged at the end of the bending tube. The positioning groove and the positioning block are engaged with each other. The positioning block and the positioning groove define the installation position of the bending tube, which is beneficial to the quick connection and quick positioning of the bending tube and the connecting piece.

[0008] In some embodiments of the above endoscopic bending portion connection structure, at least one strip-shaped groove is provided on the first connecting seat and / or the second connecting seat, and the strip-shaped groove is an open structure with an unclosed end. The first connecting seat and / or the second connecting seat have the function of expanding and contracting at the open end of the strip-shaped groove, making it easier for the first connecting seat and the second connecting seat to be connected to the insertion tube and the bending tube.

[0009] Wherein, a concave wire groove is provided on the inner wall of the base, and the strip-shaped groove is located in the extending direction of the wire groove. Both the wire groove and the strip-shaped groove can be used to accommodate the cable, reducing the internal space occupied by the cable and allowing a larger-sized working channel to be placed.

[0010] Wherein, the peripheral surface of the strip-shaped groove is set to be a concave arc, and the arc structure fits more closely to the outer wall of the circular cable, which can play a role in fixing the cable, preventing the cable from moving, and facilitating the insertion tube to be sleeved outside the first connecting seat.

[0011] In some embodiments of the above endoscopic bending portion connection structure, the inner hole of the connecting member is a non-circular arc, and the arc radius on one side of the inner hole is greater than that on the other side. The inner wall of the arc fits with the outer diameter of the internally inserted pipe or device, which can play a role in fixing the pipe or device and facilitating the assembly of the endoscope.

[0012] In some embodiments of the above endoscopic bending portion connection structure, the base, the first connecting seat and the second connecting seat are integrally formed. Integral forming can reduce the assembly process and improve the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly describe the drawings required for use in the description of the embodiments. Obviously, the described drawings are only a part of the embodiments of the present invention, rather than all the embodiments. Those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative efforts:

[0014] Figure 1 is a schematic structural diagram of a preferred embodiment of the present invention;

[0015] Figure 2 is an exploded schematic diagram of a preferred embodiment of the present invention;

[0016] Figure 3 is a schematic structural diagram of the connecting member of a preferred embodiment of the present invention Figure 1 ;

[0017] Figure 4 is a schematic structural diagram of the connecting member of a preferred embodiment of the present invention Figure 2 ;

[0018] Figure 5This is the front view of the connector in the preferred embodiment of the present utility model. Detailed implementation manners

[0019] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] It should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0021] Refer to Figures 1 to 5 , an endoscope bending part connection structure, including an insertion tube 100, a bending tube 200, and a connector 300. The connector 300 includes a base 330, a first connection seat 310 located on one side of the base 330, and a second connection seat 320 located on the other side of the base 330. The base 330, the first connection seat 310, and the second connection seat 320 are all hollow rings. The insertion tube 100 is sleeved outside the first connection seat 310, the bending tube 200 is sleeved outside the second connection seat 320. The outer diameters of the first connection seat 310 and the second connection seat 320 are smaller than the outer diameter of the base 330, and the outer diameters of the insertion tube 100, the base 330, and the bending tube 200 are the same.

[0022] The insertion tube 100 and the bending tube 200 are directly sleeved at both ends of the connector 300 for fixation and connection, making the assembly of the insertion tube 100 and the bending tube 200 more efficient and improving the production efficiency. Since the base 330 of the connector 300 is designed to have the same outer diameter as the insertion tube 100 and the bending tube 200, after assembly, the connection between the insertion tube 100, the base 330, and the bending tube 200 is smooth without protrusions, maintaining the dimensional consistency of the insertion part and improving the production quality of the product.

[0023] Since the bending direction of the bending tube 200 is fixed, a positioning block 321 is provided outside the second connecting seat 320. A positioning groove 201 is provided at the end of the bending tube 200. The positioning groove 201 and the positioning block 321 are engaged with each other to fix the bending tube 200. The positioning block 321 and the positioning groove 201 define the installation position of the bending tube 200, which is beneficial to the quick connection and quick positioning of the bending tube 200 and the connecting member 300, so that the bending directions of the cable control are consistent after the bending tube 200 is installed. In addition, the positioning block 321 can prevent the bending tube 200 from rotating and has a better anti-twisting effect.

[0024] Referring to Figures 2 to 4 , in this embodiment, two strip-shaped grooves 340 are provided on both the first connecting seat 310 and the second connecting seat 320. The two strip-shaped grooves 340 are symmetrically arranged. The strip-shaped groove 340 is an open structure with an unclosed end. The opening of the strip-shaped groove 340 is located at the ends of the first connecting seat 310 and the second connecting seat 320. The open structure has the function of expanding and contracting, so that the ends of the first connecting seat 310 and the second connecting seat 320 have the deformation ability of shrinking and expanding. When the insertion tube 100 and the bending tube 200 are sleeved on the first connecting seat 310 and the second connecting seat 320, the first connecting seat 310 and the second connecting seat 320 can shrink inward to facilitate the sleeving of the pipe material, improving the installation efficiency.

[0025] In addition, an inwardly concave wire groove 331 is provided on the inner wall of the base 330. The strip-shaped groove 340 is located in the extending direction of the wire groove 331, and the wire groove 331 is located above the strip-shaped groove 340, so that the wire groove 331 and the strip-shaped groove 340 are connected up and down. A cable for control is connected to the bending tube 200, and the cable will occupy the space inside the connecting member 300. Using the wall thickness of the connecting member 300, the wire groove 331 is opened on the base 330. The wire groove 331 and the strip-shaped groove 340 are used to accommodate the cable, reducing the internal space occupied by the cable, allowing a larger-sized working channel to be placed, and avoiding the increase in the sizes of the connecting part and the insertion part.

[0026] To increase the positioning effect of the strip-shaped groove 340, the peripheral surface of the strip-shaped groove 340 is set to an inwardly concave arc shape. The arc structure fits better with the outer wall of the circular cable and can play a role in fixing the cable, preventing the cable from moving when the pipe material is sleeved, and facilitating the sleeving of the insertion tube 100 and the bending tube 200 outside the first connecting seat 310 and the second connecting seat 320.

[0027] A working channel and a camera device are usually further provided in the bending tube 200 of the endoscope. The camera device is connected with an electronic cable. The working channel and the electronic cable extend backward from the bending tube 200 into the handle. The inner hole of the connecting member 300 in this embodiment is a non-circular arc shape, specifically formed by connecting two semi-circles to form a closed curve. Referring to Figure 5, the arc radius r1 on one side of the inner hole is greater than the arc radius r2 on the other side. The arc inner wall with the radius r1 fits with the working channel, and the arc inner wall with the radius r2 fits with the electronic cable, which can play a role in fixing the pipeline or device and facilitate the assembly of the endoscope.

[0028] In this embodiment, the connector 300 is made of plastic material, and the base 330, the first connecting seat 310 and the second connecting seat 320 are integrally formed. In other embodiments, the connector 300 can also be integrally formed by metal cutting. Integral forming can reduce the assembly process and improve the processing efficiency.

[0029] The above is a specific description of the preferred embodiment of the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, those skilled in the art can make various equivalent variations or substitutions without departing from the spirit of the present invention. Other embodiments that can be obtained all belong to the scope of protection of the present invention.

Claims

1. An endoscope bending portion connection structure, comprising an insertion tube (100) and a bending tube (200), characterized in that: Further comprising a connecting member (300), the connecting member (300) includes a base (330), a first connecting seat (310) located on one side of the base (330), and a second connecting seat (320) located on the other side of the base (330). The base (330), the first connecting seat (310), and the second connecting seat (320) are all hollow rings. The insertion tube (100) is sleeved outside the first connecting seat (310), and the bending tube (200) is sleeved outside the second connecting seat (320). The outer diameters of the first connecting seat (310) and the second connecting seat (320) are smaller than the outer diameter of the base (330), and the outer diameters of the insertion tube (100), the base (330), and the bending tube (200) are the same.

2. The endoscopic bending portion connection structure according to claim 1, characterized in that: A positioning block (321) is provided outside the second connecting seat (320), and a positioning groove (201) is provided at the end of the bending tube (200). The positioning groove (201) and the positioning block (321) are engaged with each other.

3. The endoscopic bending section connection structure according to claim 1, wherein: At least one strip-shaped groove (340) is provided on the first connecting seat (310) and / or the second connecting seat (320), and the strip-shaped groove (340) is an open structure with an unclosed end.

4. The endoscope bending portion connection structure according to claim 3, characterized in that: A concave wire groove (331) is provided on the inner wall of the base (330), and the strip-shaped groove (340) is located in the extending direction of the wire groove (331).

5. The endoscopic bending portion connection structure according to claim 3, wherein: The peripheral surface of the strip-shaped groove (340) is set to be a concave arc.

6. The endoscope bending portion connection structure according to claim 1, wherein: The inner hole of the connecting member (300) is a non-circular arc, and the arc radius on one side of the inner hole is greater than the arc radius on the other side.

7. The endoscopic bending portion connection structure according to claim 1, wherein: The base (330), the first connecting seat (310), and the second connecting seat (320) are integrally formed.

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