Optical coupling connection structure, endoscope host and endoscope system

Abstract

The utility model discloses an optical coupling connection structure, an endoscope host and an endoscope system, and relates to the technical field of endoscopes. The optical coupling connection structure comprises a light guide pipe, a fixed seat, a flexible sleeve and a coupling lens. The light guide pipe is provided with a light guide cavity extending in the axial direction of the optical coupling connection structure. The fixed seat is annularly arranged on the peripheral side of the light guide pipe; the flexible sleeve is annularly arranged on the peripheral side of the light guide pipe and located between the light guide pipe and the fixing base, the flexible sleeve is provided with a first end and a second end which are arranged in the axial direction of the optical coupling connection structure, one of the first end and the second end is connected to the light guide pipe, and the other one of the first end and the second end is connected to the fixing base; the coupling lens is connected to the light guide pipe and located at one end of the light guide cavity. The optical coupling connection structure provided by the utility model can improve the optical coupling efficiency between the endoscope host and the endoscope connector.

Description

Technical Field

[0001] The present application relates to the technical field of endoscopes, and in particular to an optical coupling connection structure, an endoscope host and an endoscope system. Background Art

[0002] An endoscope system usually consists of a host, a connector, and a mirror structure for inserting into the lesion, wherein the connector can realize the transmission of electrical signals, illumination light, etc. between the host and the mirror structure.

[0003] However, due to production errors, assembly errors and other factors, it is inevitable that the optical axis of the illumination light emitted by the coupling lens in the host is relatively tilted with the axis of the light guide rod in the connector, or the convergence focus of the illumination light deviates from the light input surface of the light guide rod, thereby affecting the optical coupling efficiency between the host and the connector. Utility Model Content

[0004] The present application provides an optical coupling connection structure, an endoscope host and an endoscope system to improve the optical coupling efficiency between the endoscope host and the endoscope connector.

[0005] In a first aspect, the present application provides an optical coupling connection structure for an endoscope host, the optical coupling connection structure comprising:

[0006] A light guide pipe, configured with a light guide cavity extending axially along the optical coupling connection structure;

[0007] A fixing seat, arranged around the circumference of the light guide tube;

[0008] A flexible sleeve, arranged around the circumference of the light guide tube and located between the light guide tube and the fixing seat, the flexible sleeve is configured with a first end and a second end arranged along the axial direction of the optical coupling connection structure, one of the first end and the second end is connected to the light guide tube, and the other is connected to the fixing seat;

[0009] The coupling lens is connected to the light guide tube and is located at one end of the light guide cavity.

[0010] Based on the above technical solution, when the light guide rod of the endoscope connector is inserted into the light guide cavity, the light guide rod can drive the light guide tube to squeeze or stretch the flexible sleeve, and cause the flexible sleeve to undergo elastic deformation, which can absorb the assembly error and processing error between the light guide rod and the optical coupling connection structure. Thus, the light guide rod can be inserted into the light guide cavity in parallel, so that the axis of the light guide rod is coaxial with the optical axis of the coupling lens, thereby improving the optical coupling efficiency between the endoscope host and the endoscope connector. In addition, there is a retaining force between the light guide rod and the light guide tube along the axial and radial directions of the optical coupling connection structure, which can maintain the relative position between the focal point of the illumination light emitted by the coupling lens and the light inlet surface of the light guide rod unchanged, and the optical coupling efficiency can be maintained at a relatively large value.

[0011] In some possible implementations, the flexible sleeve includes a flexible sleeve body, a first connecting flange and a second connecting flange;

[0012] The first connecting flange is arranged at one end of the flexible sleeve body close to the first end, and is protruded from one side of the flexible sleeve body close to the fixing seat, and a first abutting surface is arranged at one end of the fixing seat close to the first end, and the first abutting surface abuts against a side surface of the first connecting flange close to the second end;

[0013] The second connecting flange is arranged at one end of the flexible sleeve body close to the second end, and is protruded from one side of the flexible sleeve body close to the light guide tube. A second abutting surface is arranged at one end of the light guide tube close to the second end, and the second abutting surface abuts against a side surface of the second connecting flange away from the first end.

[0014] In some possible implementations, a gap is provided at least one of between an end of the flexible sleeve body close to the first connecting flange and the light guide tube and between an end of the flexible sleeve body close to the second connecting flange and the fixing seat.

[0015] In some possible implementations, a gap is provided between an end of the flexible sleeve body close to the second connecting flange and the fixing seat.

[0016] In some possible implementations, a gap is provided between an end of the flexible sleeve body close to the first connecting flange and the light guide tube.

[0017] In some possible implementations, the flexible sleeve body gradually inclines toward the light guide tube from an end close to the first connecting flange to an end close to the second connecting flange.

[0018] In some possible implementations, the flexible sleeve includes a flexible sleeve body, a third connecting flange and a fourth connecting flange;

[0019] The third connecting flange is arranged at one end of the flexible sleeve body close to the first end, and is convexly arranged on one side of the flexible sleeve body close to the light guide tube. The end of the light guide tube close to the first end is provided with a third abutting surface, and the third abutting surface abuts against a side surface of the third connecting flange close to the second end.

[0020] The fourth connecting flange is arranged at one end of the flexible sleeve body close to the second end, and is protruded from one side of the flexible sleeve body close to the fixing seat. The end of the fixing seat close to the second end is provided with a fourth abutting surface, and the fourth abutting surface abuts against a side surface of the fourth connecting flange close to the first end.

[0021] In some possible implementations, a gap is provided at least one between an end of the flexible sleeve body close to the third connecting flange and the fixing seat, and between an end of the flexible sleeve body close to the fourth connecting flange and the light guide.

[0022] In some possible implementations, a gap is provided between an end of the flexible sleeve body close to the third connecting flange and the fixing seat, and a gap is provided between an end of the flexible sleeve body close to the fourth connecting flange and the light guide pipe.

[0023] In some possible implementations, the flexible sleeve body gradually inclines in a direction away from the light guide pipe from an end close to the third connecting flange to an end close to the fourth connecting flange.

[0024] In a second aspect, the present application also provides an endoscope host, comprising the optical coupling connection structure provided in the above embodiments.

[0025] In a third aspect, the present application also provides an endoscope system, comprising the optical coupling connection structure provided in the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic cross-sectional structure diagram of an optical coupling connection structure in some embodiments is shown;

[0028] Figure 2 Shows Figure 1 A schematic diagram of the partially enlarged structure of part A;

[0029] Figure 3 Shows Figure 1 A schematic diagram of the local enlarged structure of part B;

[0030] Figure 4 shows a schematic cross-sectional structure diagram of a flexible sleeve in some embodiments;

[0031] Figure 5 Schematic diagrams of cross-sectional structures of optical coupling connection structures in other embodiments are shown;

[0032] Figure 6 Shows Figure 5 A schematic diagram of the local enlarged structure of part C in the middle;

[0033] Figure 7 Shows Figure 5 A schematic diagram of the local enlarged structure of part D in the middle;

[0034] Figure 8 Schematic diagrams of cross-sectional structures of flexible sleeves in other embodiments are shown;

[0035] Fig. 9 A partial cross-sectional structural schematic diagram of an endoscope host in some embodiments is shown;

[0036] Fig.10 A schematic diagram of the structure of an endoscope system in some embodiments is shown.

[0037] Description of main component symbols:

[0038] 1000-endoscope host; 1100-optical coupling connection structure; 1200-main structure; 1210-light box;

[0039] 100 - light guide tube; 110 - light guide cavity; 120 - first embedding groove; 121 - second abutting surface; 130 - second embedding groove; 131 - third abutting surface;

[0040] 200-fixing seat; 210-bending portion; 211-first connecting section; 2111-first abutting surface; 212-second connecting section; 220-flange; 221-fourth abutting surface;

[0041] 300-flexible sleeve; 301-first end; 302-second end; 310-flexible sleeve body; 321-first connecting flange; 322-second connecting flange; 331-third connecting flange; 332-fourth connecting flange;

[0042] 400-coupling lens;

[0043] 2000-endoscope connector; 2100-light guide rod. DETAILED DESCRIPTION

[0044] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0045] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0049] Embodiment 1

[0050] like Figure 1 , Fig. 9 and Fig.10As shown, an optical coupling connection structure 1100 is provided in the embodiment, which can be used in the endoscope host 1000. During use, the optical coupling connection structure 1100 can be used to connect the light guide rod 2100 in the endoscope connector 2000, perform optical coupling between the endoscope host 1000 and the endoscope connector 2000, and realize the transmission of illumination light between the endoscope host 1000 and the endoscope connector 2000.

[0051] like Figure 1 As shown, the optical coupling connection structure 1100 may include a light pipe 100 , a fixing seat 200 , a flexible sleeve 300 and a coupling lens 400 .

[0052] The light pipe 100 may be provided with a light guide cavity 110 extending along the axial direction of the optical coupling connection structure 1100, and the light guide cavity 110 may be a through-hole structure. The axial direction of the optical coupling connection structure 1100 may refer to the extension direction of the axis L, and the radial direction of the optical coupling connection structure 1100 may be perpendicular to the axial direction thereof. The coupling lens 400 may be connected to the light pipe 100 and located at one end of the light guide cavity 110.

[0053] The fixing base 200 may be disposed around the periphery of the light guide 100. The flexible sleeve 300 is also disposed around the periphery of the light guide 100 and is located between the light guide 100 and the fixing base 200. It is understood that when the flexible sleeve 300 is squeezed or stretched, a certain elastic deformation may occur.

[0054] Combined with Figure 4 In addition, the flexible sleeve 300 may include a first end 301 and a second end 302 disposed along the axial direction of the optical coupling connection structure 1100. The first end 301 may be disposed close to one end of the coupling lens 400. One of the first end 301 and the second end 302 of the flexible sleeve 300 may be connected to the fixing seat 200, and the other may be connected to the light guide 100.

[0055] During use, the end of the coupling lens 400 away from the light guide cavity 110 can be opposite to the light box 1210 in the endoscope mainframe 1000, and can be used to receive the illumination light generated by the light box 1210. The light guide rod 2100 in the endoscope connector 2000 can be inserted into the light guide cavity 110 from the end of the light guide tube 100 away from the coupling lens 400, and can be opposite to the coupling lens 400. The coupling lens 400 can transfer the received illumination light to the light guide rod 2100, thereby realizing the transmission of illumination light between the endoscope mainframe 1000 and the endoscope connector 2000.

[0056] In the present application, during the process of inserting the light guide rod 2100 into the light guide cavity 110, the light guide rod 2100 can drive the light guide tube 100 to squeeze or stretch the flexible sleeve 300, and cause the flexible sleeve 300 to undergo elastic deformation, which can absorb the assembly error and processing error between the light guide rod 2100 and the optical coupling connection structure 1100. Thus, the light guide rod 2100 can be inserted into the light guide cavity 110 in parallel, so that the axis of the light guide rod 2100 is coaxial with the optical axis of the coupling lens 400. In addition, there is a retaining force between the light guide rod 2100 and the light guide tube 100 along the axial direction and radial direction of the optical coupling connection structure 1100, which can maintain the relative position between the focus point of the illumination light emitted by the coupling lens 400 and the light inlet surface of the light guide rod 2100 unchanged, so that the coupling efficiency of the illumination light entering the light guide rod 2100 is kept at the maximum.

[0057] It can be seen that the optical coupling connection structure 1100 provided in the present application can improve the optical coupling efficiency between the endoscope host 1000 and the endoscope connector 2000, and can maintain the optical coupling efficiency at a relatively large value.

[0058] Embodiment 2

[0059] like Figure 1 As shown, an optical coupling connection structure 1100 is provided in the embodiment, and based on the first embodiment, further:

[0060] Recombination Figures 2 to 4 The flexible sleeve 300 may include an integrated flexible sleeve body 310, a first connection flange 321 and a second connection flange 322. The flexible sleeve body 310 may be substantially tubular, sleeved around the light guide 100, and located between the light guide 100 and the fixing seat 200.

[0061] The first connection flange 321 may be protruded from one side of the flexible sleeve body 310 close to the fixing seat 200 and located at one end of the flexible sleeve body 310 close to the first end 301. It is understood that the protruding direction of the first connection flange 321 may be parallel to the radial direction of the optical coupling connection structure 1100.

[0062] In some embodiments, the first connecting flange 321 may be disposed along the circumference of the flexible sleeve body 310 and present an annular structure.

[0063] The fixing base 200 is provided with a first abutting surface 2111 at one end close to the first end 301 of the flexible sleeve 300. Specifically, the fixing base 200 may be provided with a bending portion 210 at one end close to the first end 301. The bending portion 210 may include a first connecting segment 211 and a second connecting segment 212 arranged in sequence, and the second connecting segment 212 may be located at an end of the first connecting segment 211 away from the second end 302. The first connecting segment 211 may extend along the radial direction of the optical coupling connection structure 1100, and the second connecting segment 212 may extend along the axial direction of the optical coupling connection structure 1100. The first abutting surface 2111 may be formed on a side surface of the first connecting segment 211 away from the second end 302.

[0064] In the embodiment, the first abutting surface 2111 can abut against a side surface of the first connecting flange 321 close to the second end 302. In addition, the outer peripheral wall of the first connecting flange 321 can fit against the inner wall of the second connecting section 212, which can improve the stability between the flexible sleeve 300 and the fixing seat 200.

[0065] In an embodiment, the first connection flange 321 may be fixedly connected to an end of the fixing base 200 close to the first end 301. For example, when the optical coupling connection structure 1100 is assembled in the endoscope host 1000, the first connection flange 321 may be fixed to the fixing base 200 under the effect of structural limitation.

[0066] In other embodiments, the first connecting flange 321 and the fixing seat 200 may also be kept relatively fixed by bonding or other methods.

[0067] In other embodiments, a plurality of first connection flanges 321 may be provided at intervals along the circumference of the flexible sleeve body 310, and the plurality of first connection flanges 321 may be evenly or unevenly distributed on the circumference of the flexible sleeve body 310. Correspondingly, a plurality of first abutting surfaces 2111 may be provided at intervals along the circumference of the fixing seat 200, and the plurality of first abutting surfaces 2111 abut against the plurality of first connection flanges 321 one by one.

[0068] Of course, in other embodiments, one of the first connecting flange 321 and the first abutting surface 2111 may be provided continuously, and the other may be provided in plurality at intervals.

[0069] The second connection flange 322 may protrude from one side of the flexible sleeve body 310 close to the light pipe 100 and is located at one end of the flexible sleeve body 310 close to the second end 302. It is understood that the protruding direction of the second connection flange 322 may be parallel to the radial direction of the optical coupling connection structure 1100.

[0070] In some embodiments, the second connecting flange 322 may be disposed along the circumference of the flexible sleeve body 310 and present an annular structure.

[0071] The light guide 100 is provided with a second abutting surface 121 at one end close to the first end 301 of the flexible sleeve 300. Specifically, a first annular embedding groove 120 is provided at one side of the light guide 100 close to the flexible sleeve 300, and is provided close to the second end 302 of the flexible sleeve 300. The second connecting flange 322 can be embedded in the first embedding groove 120. The second abutting surface 121 can be formed on a side wall of the first embedding groove 120 away from the first end 301. In the embodiment, the second abutting surface 121 can abut against a side surface of the second connecting flange 322 away from the first end 301. The end surface of the second connecting flange 322 away from the end of the flexible sleeve body 310 can fit with the bottom of the first embedding groove 120. In addition, a side surface of the second connecting flange 322 close to the first end 301 can fit with a side wall of the first embedding groove 120 close to the first end 301. Thus, a stable fixed connection between the flexible sleeve 300 and the light guide 100 can also be achieved.

[0072] In other embodiments, a plurality of second connection flanges 322 may be provided at intervals along the circumference of the flexible sleeve body 310, and the plurality of second connection flanges 322 may be evenly or unevenly distributed on the circumference of the flexible sleeve body 310. Correspondingly, a plurality of second abutting surfaces 121 may be provided at intervals along the circumference of the light guide 100, and the plurality of second abutting surfaces 121 abut against the plurality of second connection flanges 322 one by one.

[0073] Of course, in other embodiments, a plurality of second connecting flanges 322 may be provided at intervals, and the second abutting surfaces 121 may be provided continuously.

[0074] It is understandable that when the light guide rod 2100 is inserted into the light guide cavity 110, the second abutting surface 121 of the light guide tube 100 can be driven to squeeze the second connecting flange 322, that is, the light guide tube 100 squeezes the second end 302 of the flexible sleeve 300, and the flexible sleeve 300 can be compressed and elastically deformed under the squeezing action.

[0075] like Figures 1 to 4 As shown, further, a gap is provided between at least one of an end of the flexible sleeve body 310 close to the first connection flange 321 and the light pipe 100 and an end of the flexible sleeve body 310 close to the second connection flange 322 and the fixing seat 200 .

[0076] In some embodiments, the flexible sleeve body 310 gradually tilts toward the direction close to the light guide 100 from the end close to the first connection flange 321 to the end close to the second connection flange 322. Accordingly, a gap may be formed between the end of the flexible sleeve body 310 close to the first connection flange 321 and the light guide 100. A corresponding gap may also be formed between the end of the flexible sleeve body 310 close to the second connection flange 322 and the fixing seat 200. Thus, an avoidance space can be provided for the deformation of the flexible sleeve 300, ensuring that the light guide rod 2100 and the light guide 100 are smoothly aligned and plugged.

[0077] In other embodiments, a gap may be formed between the end of the flexible sleeve body 310 close to the first connection flange 321 and the light pipe 100 . Alternatively, a corresponding gap may be formed between the end of the flexible sleeve body 310 close to the second connection flange 322 and the fixing base 200 .

[0078] In other embodiments, the flexible sleeve body 310 may also be parallel to the axial direction of the optical coupling connection structure 1100 , that is, the flexible sleeve body 310 is substantially in the shape of a circular tube.

[0079] Embodiment 3

[0080] like Figure 5 As shown, an optical coupling connection structure 1100 is provided in the embodiment, and based on the first embodiment, further:

[0081] Combined with Figures 6 to 8 The flexible sleeve 300 may include an integrated flexible sleeve body 310, a third connection flange 331 and a fourth connection flange 332. The flexible sleeve body 310 may be substantially tubular, sleeved around the light guide 100, and located between the light guide 100 and the fixing seat 200.

[0082] The third connection flange 331 may be protruded on a side of the flexible sleeve body 310 close to the light pipe 100, and located at an end of the flexible sleeve body 310 close to the first end 301. It is understandable that the protruding direction of the third connection flange 331 may be parallel to the radial direction of the optical coupling connection structure 1100. In some embodiments, the third connection flange 331 may be arranged along the circumference of the flexible sleeve body 310 and present an annular structure.

[0083] The end of the light guide 100 close to the first end 301 of the flexible sleeve 300 is provided with a third abutting surface 131. Specifically, a side of the light guide 100 close to the flexible sleeve 300 is provided with an annular second embedding groove 130, and is provided close to the first end 301 of the flexible sleeve 300. The third connecting flange 331 can be embedded in the second embedding groove 130. The third abutting surface 131 can be formed on a side wall of the second embedding groove 130 close to the second end 302. In the embodiment, the third abutting surface 131 can abut against a side surface of the third connecting flange 331 close to the second end 302. The end surface of the third connecting flange 331 away from the end of the flexible sleeve body 310 can fit with the groove bottom of the second embedding groove 130. In addition, a side surface of the third connecting flange 331 away from the second end 302 can fit with a side wall of the second embedding groove 130 away from the second end 302. Thus, a stable fixed connection between the flexible sleeve 300 and the light guide tube 100 can also be achieved.

[0084] In other embodiments, a plurality of third connection flanges 331 may be provided at intervals along the circumference of the flexible sleeve body 310, and the plurality of third connection flanges 331 may be evenly or unevenly distributed on the circumference of the flexible sleeve body 310. Correspondingly, a plurality of third abutting surfaces 131 may be provided at intervals along the circumference of the light guide 100, and the plurality of third abutting surfaces 131 abut against the plurality of third connection flanges 331 one by one.

[0085] Of course, in other embodiments, a plurality of third connecting flanges 331 may be arranged at intervals, and the third abutting surfaces 131 may be arranged continuously.

[0086] In the embodiment, the fourth connection flange 332 may be protrudingly disposed on a side of the flexible sleeve body 310 close to the fixing seat 200, and located at an end of the flexible sleeve body 310 close to the second end 302. It is understood that the protruding direction of the fourth connection flange 332 may be parallel to the radial direction of the optical coupling connection structure 1100. In some embodiments, the fourth connection flange 332 may be disposed along the circumference of the flexible sleeve body 310 and present an annular structure.

[0087] The fourth abutting surface 221 is disposed at one end of the fixing base 200 close to the second end 302 of the flexible sleeve 300. Specifically, in some embodiments, the fourth abutting surface 221 may be formed at an end surface of the fixing base 200 close to the second end 302.

[0088] In other embodiments, a flange 220 is protruded from one end of the fixing base 200 close to the second end 302, and the flange 220 may be located on a side of the fixing base 200 close to the flexible sleeve 300. In addition, the flange 220 may be arranged along the circumference of the fixing base 200. The fourth abutting surface 221 may be formed on a side of the flange 220 away from the first end 301.

[0089] In the embodiment, the fourth abutting surface 221 may abut against a side surface of the fourth connecting flange 332 close to the first end 301 .

[0090] In other embodiments, a plurality of fourth connection flanges 332 may be provided at intervals along the circumference of the flexible sleeve body 310, and the plurality of fourth connection flanges 332 may be evenly or unevenly distributed on the circumference of the flexible sleeve body 310. Correspondingly, a plurality of fourth abutting surfaces 221 may be provided at intervals along the circumference of the fixing seat 200, and the plurality of fourth abutting surfaces 221 abut against the plurality of fourth connection flanges 332 one by one.

[0091] Of course, in other embodiments, one of the third connecting flange 331 and the third abutting surface 131 may be provided continuously, and the other may be provided in plurality at intervals.

[0092] It can be understood that when the light guide rod 2100 is inserted into the light guide cavity 110, the third abutting surface 131 of the light guide tube 100 can be driven to squeeze the third connecting flange 331, that is, to squeeze the first end 301 of the flexible sleeve 300, thereby allowing the first end 301 of the flexible sleeve 300 to move away from the second end 302, causing the flexible sleeve 300 to stretch and produce elastic deformation.

[0093] Furthermore, a gap is provided between at least one of an end of the flexible sleeve body 310 close to the third connection flange 331 and the fixing seat 200 and an end of the flexible sleeve body 310 close to the fourth connection flange 332 and the light guide 100 .

[0094] In some embodiments, the flexible sleeve body 310 gradually tilts away from the light guide 100 from the end close to the third connection flange 331 to the end close to the fourth connection flange 332. Accordingly, a gap may be formed between the end of the flexible sleeve body 310 close to the third connection flange 331 and the fixing seat 200. A corresponding gap may also be formed between the end of the flexible sleeve body 310 close to the fourth connection flange 332 and the light guide 100.

[0095] In other embodiments, a gap may be formed between the end of the flexible sleeve body 310 close to the third connection flange 331 and the fixing seat 200 . Alternatively, a corresponding gap may be formed between the end of the flexible sleeve body 310 close to the fourth connection flange 332 and the light pipe 100 .

[0096] In other embodiments, the flexible sleeve body 310 may also be parallel to the axial direction of the optical coupling connection structure 1100 , that is, the flexible sleeve body 310 is substantially in the shape of a circular tube.

[0097] Embodiment 4

[0098] like Fig. 9As shown, an endoscope host 1000 is also provided in the embodiment, which may include the optical coupling connection structure 1100 provided in the embodiment.

[0099] In addition, the endoscope host 1000 further includes a main structure 1200, wherein a light box 1210 is integrated in the main structure 1200. The optical coupling connection structure 1100 can be installed on the main structure 1200. The coupling lens 400 can be opposite to the light box 1210 and can receive the illumination light generated by the light box 1210.

[0100] like Fig. 9 and Fig.10 As shown, an endoscope system is also provided in the embodiment, which may include the endoscope host 1000 and the endoscope connector 2000 provided in the embodiment. Among them, the light guide rod 2100 in the endoscope connector 2000 may be aligned and connected with the optical coupling connection structure 1100 in the endoscope host 1000.

[0101] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0102] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An optical coupling connection structure, characterized in that: For an endoscope host, the optical coupling connection structure comprises: A light guide pipe, configured with a light guide cavity extending axially along the optical coupling connection structure; A fixing seat, arranged around the circumference of the light guide tube; A flexible sleeve, arranged around the circumference of the light guide tube and located between the light guide tube and the fixing seat, the flexible sleeve is configured with a first end and a second end arranged along the axial direction of the optical coupling connection structure, one of the first end and the second end is connected to the light guide tube, and the other is connected to the fixing seat; The coupling lens is connected to the light guide tube and is located at one end of the light guide cavity.

2. The optical coupling connection structure according to claim 1, characterized in that: The flexible sleeve comprises a flexible sleeve body, a first connecting flange and a second connecting flange; The first connecting flange is arranged at one end of the flexible sleeve body close to the first end, and is protruded from one side of the flexible sleeve body close to the fixing seat, and a first abutting surface is arranged at one end of the fixing seat close to the first end, and the first abutting surface abuts against a side surface of the first connecting flange close to the second end; The second connecting flange is arranged at one end of the flexible sleeve body close to the second end, and is protruded from one side of the flexible sleeve body close to the light guide tube. A second abutting surface is arranged at one end of the light guide tube close to the second end, and the second abutting surface abuts against a side surface of the second connecting flange away from the first end.

3. The optical coupling connection structure according to claim 2, characterized in that: A gap is provided at least between one end of the flexible sleeve body close to the first connection flange and the light guide tube, and between one end of the flexible sleeve body close to the second connection flange and the fixing seat.

4. The optical coupling connection structure according to claim 3, characterized in that: A gap is arranged between one end of the flexible sleeve body close to the second connecting flange and the fixing seat.

5. The optical coupling connection structure according to claim 4, characterized in that: A gap is arranged between one end of the flexible sleeve body close to the first connecting flange and the light guide tube.

6. The optical coupling connection structure according to claim 5, characterized in that: The flexible sleeve body gradually inclines toward the direction close to the light guide pipe from one end close to the first connecting flange to one end close to the second connecting flange.

7. The optical coupling connection structure according to claim 1, characterized in that: The flexible sleeve comprises a flexible sleeve body, a third connecting flange and a fourth connecting flange; The third connecting flange is arranged at one end of the flexible sleeve body close to the first end, and is convexly arranged on one side of the flexible sleeve body close to the light guide tube. The end of the light guide tube close to the first end is provided with a third abutting surface, and the third abutting surface abuts against a side surface of the third connecting flange close to the second end. The fourth connecting flange is arranged at one end of the flexible sleeve body close to the second end, and is protruded from one side of the flexible sleeve body close to the fixing seat. The end of the fixing seat close to the second end is provided with a fourth abutting surface, and the fourth abutting surface abuts against a side surface of the fourth connecting flange close to the first end.

8. The optical coupling connection structure according to claim 7, characterized in that: A gap is provided at least between one end of the flexible sleeve body close to the third connection flange and the fixing seat, and between one end of the flexible sleeve body close to the fourth connection flange and the light guide tube.

9. The optical coupling connection structure according to claim 8, characterized in that: Gaps are provided between one end of the flexible sleeve body close to the third connecting flange and the fixing seat, and between one end of the flexible sleeve body close to the fourth connecting flange and the light guide tube.

10. The optical coupling connection structure according to claim 9, characterized in that: The flexible sleeve body is gradually inclined in a direction away from the light guide tube from an end close to the third connecting flange to an end close to the fourth connecting flange.

11. An endoscope host, characterized in that: It comprises the optical coupling connection structure as claimed in any one of claims 1 to 10.

12. An endoscope system, characterized in that: It comprises the optical coupling connection structure as claimed in any one of claims 1 to 10.

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