Light guide connector of endoscope and endoscope system

Abstract

The utility model relates to the technical field of endoscopes, and discloses a light guide connector of an endoscope and an endoscope system, the light guide connector comprises a light guide cap, an installation cavity and an installation hole are arranged in the light guide cap, the installation cavity and the installation hole are communicated with each other, and a plane lens is arranged on the installation hole; the light guide assembly is formed by movably splicing a plurality of sections of light guide pieces; an optical fiber bundle is arranged in the light guide assembly in a penetrating manner; the elastic pieces are arranged on the two adjacent light guide pieces; under the elastic action of the elastic piece, the light guide assembly has a compressed state and a reset state; in the reset state, the length of the light guide assembly is larger than the depth of the mounting cavity; in the compressed state, the length of the light guide assembly is not larger than the depth of the mounting cavity. Therefore, no gap or inclination exists between the butt joint surfaces of the optical fiber bundle and the plane lens. And therefore, the fitting degree of the butt joint surfaces of the optical fiber bundle and the plane lens can be improved, and coupling loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of endoscopes, in particular to a light-guiding connector of an endoscope and an endoscope system. Background Art

[0002] The light guide connector of an endoscope is a medical device that integrates optical, mechanical, and electrical technologies, and can be used to observe, diagnose, and treat the cavities of the human body and the cavities of internal organs. In the light guide connector system of an endoscope, a light source module is usually provided. During the detection process, the light emitted by the light source module can be transmitted to the insertion part of the light guide connector of the endoscope through the optical fiber bundle built into the light guide connector of the endoscope, thereby providing illumination for the cavity and improving the image quality. In the prior art, a flat lens is provided in front of the optical fiber bundle of the light guide connector of the endoscope, so that airtightness can be ensured while transmitting light.

[0003] At present, due to defects in manufacturing process or assembly, there will be gaps or tilts between the interface of the optical fiber bundle and the plane lens, which will cause large coupling losses between the interface of the optical fiber bundle and the plane lens during the transmission of light, and these coupling losses will be converted into heat, causing excessive temperature and the risk of scalding the operator. Utility Model Content

[0004] In view of this, the utility model provides a light guide connector for an endoscope and an endoscope system to solve the problem that there is a gap or tilt between the interface between the optical fiber bundle and the plane lens.

[0005] In a first aspect, the utility model provides a light guide connector for an endoscope, the light guide connector comprising:

[0006] A light guide cap is provided with a mounting cavity and a mounting hole which are interconnected, and a plane lens is provided on the mounting hole;

[0007] The light guide assembly is formed by movably splicing a plurality of light guide parts; an optical fiber bundle is installed inside the light guide assembly;

[0008] An elastic member is arranged on two adjacent light guide members; under the elastic action of the elastic member, the light guide assembly has a compressed state and a reset state;

[0009] In the reset state, the length of the light guide assembly is greater than the depth of the mounting cavity; in the compressed state, the length of the light guide assembly is not greater than the depth of the mounting cavity;

[0010] After the light guide assembly is inserted into the installation cavity and the light guide cap is installed, the light guide assembly is in the compressed state, and the optical fiber bundle abuts against the plane lens.

[0011] Beneficial effect: After the light guide assembly is installed in the installation cavity, the embodiment of the utility model can use the elastic force of the elastic member in a compressed state to fit the optical fiber bundle and the plane lens together, so that there is no gap or tilt between the butt joint surfaces of the optical fiber bundle and the plane lens. This can improve the fit between the butt joint surfaces of the optical fiber bundle and the plane lens, reduce coupling loss, reduce the phenomenon of excessive temperature at this position, and reduce the risk of scalding the operator.

[0012] In an optional embodiment, the light guide rod is provided with a first cavity;

[0013] An optical fiber connector is provided with a second cavity; the optical fiber connector is connected to the light guide rod through the elastic member;

[0014] The optical fiber bundle passes through the first cavity and the second cavity in sequence and is fixed in the optical fiber connector;

[0015] The light-guiding rod drives the optical fiber connector and the optical fiber bundle to be installed in the installation cavity, and the elastic member is compressed so that the optical fiber bundle fits the plane lens.

[0016] In an optional embodiment, the end face of the optical fiber bundle remains flush with the optical fiber connector, or the end face of the optical fiber bundle protrudes from the optical fiber connector.

[0017] In an optional implementation, the light guide connector further includes:

[0018] A sealing member is filled in the gap between the mounting hole and the plane lens.

[0019] Beneficial effect: The embodiment of the utility model can seal the gap between the mounting hole and the plane lens through the sealing member, thereby improving the overall air tightness of the endoscope, thereby preventing the endoscope from being affected by the external environment during actual operation and ensuring the normal operation of the endoscope.

[0020] In an optional implementation, the light guide connector further includes:

[0021] A bushing is arranged in the installation cavity, and the bushing abuts against a side of the planar lens close to the optical fiber bundle; a slot suitable for inserting the optical fiber connector is arranged in the bushing.

[0022] Beneficial effect: The embodiment of the utility model provides a bushing and a slot in the bushing, which can serve as a guide groove during the installation of the optical fiber connector, making it easier for technicians to install the connector, improving the fault tolerance during the installation process, and thus improving the installation efficiency.

[0023] In an optional implementation, the slot is coaxially arranged with the optical fiber connector.

[0024] Beneficial effect: The embodiment of the utility model can provide a coaxial assembly reference for the installation of the optical fiber connector by setting the slot coaxially with the optical fiber connector. Compared with the guide groove, the technician can directly insert the optical fiber connector into the slot without adjustment, which can further improve the installation efficiency.

[0025] In an optional implementation, the light guide connector further includes:

[0026] The locking block is arranged between the bushing and the light guide cap, and fastens the bushing to the light guide cap.

[0027] In an optional embodiment, the outer circumference of the locking block is provided with an external thread, the interior of the light guide cap is provided with an internal thread, and the locking block and the light guide cap are screwed together through the thread.

[0028] Beneficial effect: The embodiment of the utility model can play a certain role in tightening the bushing during the installation process by setting the locking block, preventing a certain misalignment between the bushing and the light guide cap, thereby preventing the optical fiber connector from being unable to be inserted into the slot of the bushing, thereby further improving the installation efficiency.

[0029] In an optional embodiment, the optical fiber bundle is fixed in the optical fiber connector by a set screw.

[0030] In an optional implementation, the elastic member is one of a spring and a rubber sleeve.

[0031] In a second aspect, the utility model further provides an endoscope system, which includes: an endoscope and a light source device and a video processor connected to the endoscope, wherein the endoscope is provided with a light guide connector as described in any of the above embodiments.

[0032] In an optional implementation, a heat sink is provided in the connector seat of the light source device, and when the light guide connector is connected to the connector seat, the heat sink and the heat sink dissipate heat for the light guide connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 This is an overall structural diagram of an endoscope in an embodiment of the utility model;

[0035] Figure 2 This is an overall structural diagram of the endoscope system in the embodiment of the utility model;

[0036] Figure 3 This is an overall structural diagram of the light guide connector of the endoscope in the embodiment of the utility model;

[0037] Figure 4 It is a cross-sectional view of the light guide connector and the connector seat in the embodiment of the utility model.

[0038] Description of reference numerals:

[0039] 1. Light guide connector; 10. Set screw; 11. Light guide rod; 12. Light guide cap; 13. Plane lens; 14. Sealing ring; 15. Bushing; 16. Locking block; 17. Optical fiber connector; 18. Optical fiber bundle; 19. Elastic part;

[0040] 2. Universal cable; 3. Operation part; 4. Insertion part; 5. Head end; 6. Light source device; 61. Connector seat; 62. Heat sink; 7. Video processor. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0042] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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, or it can be the internal communication of two components, it can be a wireless connection, or it can be a wired connection. For ordinary workers in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0044] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0045] Combine the following Figures 1 to 4 , describing an embodiment of the utility model.

[0046] According to an embodiment of the present invention, on one hand, a light guide connector 1 for an endoscope is provided. The light guide connector 1 includes: a light guide cap 12 , a light guide rod 11 , an optical fiber connector 17 and an optical fiber bundle 18 .

[0047] Specifically, in the embodiment of the utility model, the light guide cap 12 is provided with a mounting cavity and a mounting hole that are interconnected. Figure 3 As shown, the mounting hole is opened on the left side of the light guide cap 12, and a plane lens 13 is arranged on the side of the mounting hole close to the mounting position. Light from the outside can pass through the plane lens 13 in the mounting hole to provide illumination for the endoscope.

[0048] Furthermore, in the embodiment of the utility model, the light guide assembly is formed by movably splicing multiple sections of light guides, and the light guide assembly is internally provided with an optical fiber bundle 18. An elastic member 19 is provided on two adjacent light guides, and under the elastic action of the elastic member 19, the light guide assembly has a compressed state and a reset state.

[0049] In the reset state, the length of the light guide assembly is greater than the depth of the installation cavity. That is, in the reset state, when the light guide assembly is inserted into the installation cavity, part of the light guide assembly has not yet entered the installation cavity. In the compressed state, the length of the light guide assembly is not greater than the depth of the installation cavity. That is, when the light guide assembly is compressed and squeezed into the installation cavity, the light guide assembly can completely enter the installation cavity.

[0050] In the actual installation process, after the light guide assembly is inserted into the installation cavity and the light guide cap 12 is installed, the light guide assembly is in the compressed state, and under the elastic action of the elastic member, the optical fiber bundle 18 abuts against the plane lens 13.

[0051] With such arrangement, after the light guide assembly is installed in the installation cavity, the embodiment of the utility model can fit the optical fiber bundle 18 and the plane lens 13 together by using the elastic force of the elastic member 19 when it is in a compressed state, so that there is no gap or tilt between the butt joint surfaces of the optical fiber bundle 18 and the plane lens 13. This can improve the fit between the butt joint surfaces of the optical fiber bundle 18 and the plane lens 13, reduce coupling loss, reduce the phenomenon of excessive temperature at this position, and reduce the risk of scalding the operator.

[0052] Furthermore, in the embodiment of the utility model, a first cavity is provided in the light guide rod 11. A second cavity is provided in the optical fiber connector 17, and the optical fiber connector 17 is connected to the other end of the light guide rod 11 through an elastic member 19, so that the optical fiber connector 17 can reciprocate along the compression direction of the elastic member 19. The first cavity and the second cavity are interconnected, so that the optical fiber bundle 18 can pass through the first cavity and the second cavity in sequence. And the optical fiber bundle 18 is fixed in the optical fiber connector 17.

[0053] During the installation process, the technicians first install the elastic member 19 on the light guide rod 11, and then install the optical fiber connector 17 on the elastic member 19 to form the light guide rod 11 assembly. Then, the light guide rod 11 assembly is assembled with the light guide cap 12. During the assembly process, the optical fiber connector 17 needs to be inserted into the installation cavity, and then the optical fiber connector 17 and the optical fiber bundle 18 are driven to be installed in the installation cavity through the light guide rod 11. In the natural state, the length of the elastic member 19 inserted into the installation cavity as a whole is greater than the overall depth of the installation cavity. Therefore, after the installation is completed, the elastic member 19 will be compressed, and then the elastic force of the elastic member 19 will make the optical fiber bundle 18 fit the plane lens 13.

[0054] With such arrangement, after the light guide rod 11, the optical fiber connector 17 and the optical fiber bundle 18 are installed in the installation cavity, the embodiment of the utility model can use the elastic force of the elastic member 19 in a compressed state to fit the optical fiber bundle 18 and the plane lens 13 together by setting the elastic member 19, so that there will be no gap or tilt between the butt joint surfaces of the optical fiber bundle 18 and the plane lens 13. In addition, the fit between the butt joint surfaces of the optical fiber bundle 18 and the plane lens 13 can be improved, the coupling loss can be reduced, the phenomenon of excessive temperature at this position can be reduced, and the risk of scalding the operator can be reduced.

[0055] Furthermore, in an optional embodiment, the end face of the optical fiber bundle is flush with the optical fiber connector 17, or the end face of the optical fiber bundle protrudes from the optical fiber connector 17. This can improve the fit between the optical fiber bundle 18 and the flat lens 13, reduce coupling loss, reduce the phenomenon of excessive temperature at this position, and reduce the risk of scalding the operator.

[0056] Further, in an optional embodiment, the gap between the mounting hole and the plane lens 13 is filled with a sealant. In the embodiment of the utility model, the sealant can be a sealant, a silicone sealant or a mechanical sealant. Of course, this embodiment is only an example of the specific type of the sealant, but it is not limited to this. Those skilled in the art can change it according to the actual situation, as long as the same technical effect can be achieved.

[0057] With such a configuration, the embodiment of the utility model can seal the gap between the mounting hole and the plane lens 13 through the sealing member, thereby improving the overall air tightness of the endoscope and preventing external liquid from invading the interior of the endoscope through the edge of the plane lens 13. Thus, the endoscope can be prevented from being affected by the external environment during actual operation, thereby ensuring the normal operation of the endoscope.

[0058] Further, in an optional embodiment, the sealing member is a sealing ring 14. The sealing ring 14 is sleeved on the circumferential edge of the planar lens 13, so that the sealing ring 14 abuts against the mounting hole. The sealing ring 14 can be made of a transparent material, such as silicone.

[0059] Furthermore, in an optional embodiment, the light-guiding connector 1 also includes a sleeve 15, which is arranged in the installation cavity, and the sleeve 15 abuts against the side of the plane lens 13 close to the optical fiber bundle 18, and the sleeve 15 is provided with a slot suitable for inserting the optical fiber connector 17. The sleeve 15 and the light-guiding cap 12 can be fixedly connected or detachably connected. For a fixed connection, it can be gluing or welding. For a detachable connection, it can be connected by a card slot buckle. Of course, this embodiment is only an example of the connection method between the sleeve 15 and the light-guiding cap 12, but it is not limited to this. Those skilled in the art can make changes according to actual conditions as long as the same technical effect can be achieved.

[0060] In this way, the embodiment of the utility model provides a bushing 15 and a slot in the bushing 15, which can act as a guide groove during the installation of the optical fiber connector 17, making it convenient for technicians to install, improving the fault tolerance during the installation process, and thus improving the installation efficiency.

[0061] Furthermore, in an optional embodiment, the slot is coaxially arranged with the optical fiber connector 17. Due to the presence of the elastic member 19, the optical fiber connector 17 together with the optical fiber bundle 18 fixed thereto can swing within a certain range to adapt to the installation position, and the coaxiality with the slot can be ensured with high precision. In this way, the embodiment of the utility model can provide a coaxial assembly reference for the installation of the optical fiber connector 17 by coaxially arranging the slot with the optical fiber connector 17. Compared with the guide groove, the technician can directly insert the optical fiber connector 17 into the slot without adjustment, which can further improve the installation efficiency.

[0062] In an optional embodiment, the light guide connector 1 further includes a locking block 16, which is disposed between the bushing 15 and the light guide cap 12 and fastens the bushing 15 to the light guide cap 12. The locking block 16 may be a wedge-shaped block, which is directly inserted between the bushing 15 and the light guide cap 12. The locking block 16 may also fasten the bushing 15 to the light guide cap 12 by welding. Of course, this embodiment merely illustrates the connection method of the locking block 16, but does not limit it. Those skilled in the art may make changes according to actual conditions, as long as the same technical effect can be achieved.

[0063] Furthermore, in an optional embodiment, the outer circumference of the locking block 16 is provided with an external thread, the interior of the light guide cap 12 is provided with an internal thread, and the locking block 16 and the light guide cap 12 are screwed together through threads.

[0064] In this way, the locking block 16 of the embodiment of the utility model can play a certain role in tightening the bushing 15 during the installation process, preventing a certain misalignment between the bushing 15 and the light guide cap 12, thereby preventing the optical fiber connector 17 from being unable to be inserted into the slot of the bushing 15. This can further improve the installation efficiency.

[0065] Furthermore, in an optional implementation, the optical fiber bundle 18 is fixed in the optical fiber connector 17 by a set screw 10 .

[0066] Further, in an optional implementation, the elastic member 19 is one of a spring and a rubber sleeve.

[0067] In a second aspect, the utility model further provides an endoscope system, which includes: an endoscope, a light source device 6 connected to the endoscope, and a video processor 7, wherein the endoscope is provided with a light guide connector 1 as described in any of the above embodiments.

[0068] like Figure 1As shown, the endoscope is composed of a universal cable 2, an operating part 3, and an insertion part 4. One end of the optical fiber bundle 18 is set on the light guide connector 1 of the endoscope, and passes from the inside of the light guide connector 1 through the universal cable 2, the operating part 3, and the insertion part 4 to reach the head end 5 of the insertion part 4 and dock with the illumination lens.

[0069] In actual use, the light guide connector 1 of the endoscope needs to be connected to the connector seat 61 of the light source device 6, such as Figure 2 As shown, the light source device 6 and the video processor 7 are then started, and the illumination light will be emitted from the light source device 6, pass through the optical fiber bundle 18 inside the endoscope, reach the head end 5, and provide illumination for the human body cavity.

[0070] like Figure 4 As shown, a heat sink 62 is provided in the connector seat 61 of the light source device 6. When the light guide connector 1 of the endoscope is connected to the connector seat 61 of the light source device 6, the light guide connector 1 and the heat sink 62 have a more reliable fit. The heat sink 62 has a good heat dissipation effect on the heating position of the light guide connector 1. At the same time, before use, the optical path position of the connector seat 61 relative to the light source device 6 can be adjusted so that the optical fiber bundle 18 of the light guide connector 1 has a good coaxiality with respect to the optical path, thereby improving the light coupling efficiency.

[0071] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A light guide connector for an endoscope, characterized in that: include: A light guide cap (12) is provided with a mounting cavity and a mounting hole which are interconnected, and a plane lens (13) is provided on the mounting hole; A light guide assembly is formed by movably splicing a plurality of light guide parts; an optical fiber bundle (18) is installed inside the light guide assembly; An elastic member (19) is arranged on two adjacent light guide members; under the elastic action of the elastic member (19), the light guide assembly has a compressed state and a reset state; In the reset state, the length of the light guide assembly is greater than the depth of the mounting cavity; in the compressed state, the length of the light guide assembly is not greater than the depth of the mounting cavity; After the light guide component is inserted into the installation cavity and the light guide cap (12) is installed, the light guide component is in the compressed state, and the optical fiber bundle (18) abuts against the plane lens (13).

2. The light guide connector according to claim 1, characterized in that: The light guide assembly comprises: The light guide rod (11) is provided with a first cavity; An optical fiber connector (17) is provided with a second cavity; the optical fiber connector (17) is connected to the light guide rod (11) via the elastic member (19); The optical fiber bundle (18) passes through the first cavity and the second cavity in sequence and is then fixed in the optical fiber connector (17); The light guide rod (11) drives the optical fiber connector (17) and the optical fiber bundle (18) to be installed in the installation cavity, and the elastic member (19) is compressed so that the optical fiber bundle (18) fits the plane lens (13).

3. The light guide connector according to claim 2, characterized in that: The end face of the optical fiber bundle is kept flush with the optical fiber connector (17), or the end face of the optical fiber bundle protrudes from the optical fiber connector (17).

4. The light guide connector according to claim 3, characterized in that: The light guide connector also includes: A sealing member is filled in the gap between the mounting hole and the plane lens (13).

5. The light guide connector according to any one of claims 2 to 4, characterized in that: Also includes: A bushing (15) is arranged in the installation cavity, the bushing (15) abuts against a side of the plane lens (13) close to the optical fiber bundle (18); a slot suitable for inserting the optical fiber connector (17) is arranged in the bushing (15).

6. The light guide connector according to claim 5, characterized in that: The slot is coaxially arranged with the optical fiber connector (17).

7. The light guide connector according to claim 6, characterized in that: Also includes: A locking block (16) is arranged between the bushing (15) and the light guide cap (12), and fastens the bushing (15) to the light guide cap (12).

8. The light guide connector according to claim 7, characterized in that: The outer periphery of the locking block (16) is provided with an external thread, the interior of the light guide cap (12) is provided with an internal thread, and the locking block (16) and the light guide cap (12) are screwed together via the thread.

9. The light guide connector according to any one of claims 2 to 4, characterized in that: The optical fiber bundle (18) is fixed in the optical fiber connector (17) by means of a set screw (10).

10. The light guide connector according to claim 9, characterized in that: The elastic member (19) is one of a spring and a rubber sleeve.

11. An endoscope system, characterized in that: include: An endoscope and a light source device (6) and a video processor (7) connected to the endoscope, wherein the endoscope is provided with a light guide connector (1) as claimed in any one of claims 1 to 9.

12. The endoscope system according to claim 11, characterized in that: A heat sink (62) is provided in the connector seat (61) of the light source device (6); when the light guide connector (1) is connected to the connector seat (61), the heat sink (62) and the light guide connector (1) are cooled.

Images