Composite harness and endoscope

Abstract

The application discloses a composite wire harness and an endoscope, the composite wire harness is used for the endoscope, the endoscope comprises an insertion tube, the composite wire harness comprises a composite tube, an incoming wire joint and an outgoing wire joint, the composite tube has an incoming wire end and an outgoing wire end, the incoming wire end and the outgoing wire end are communicated and are formed with a wire routing space; the incoming wire joint is fixed to the incoming wire end, the incoming wire joint is fixed to the incoming wire end, the incoming wire head body is provided with a wire passing hole communicated with the wire routing space, the incoming wire joint is provided with a cable inlet and an optical cable inlet communicated with the wire passing hole respectively; the outgoing wire joint is fixed to the outgoing wire end and is connected with the insertion tube, the outgoing wire joint is provided with a wire passing channel communicated with the wire routing space; a cable and an optical cable enter the wire routing space from the cable inlet and the optical cable inlet respectively and are inserted into the insertion tube through the wire passing channel. The technical scheme of the application aims to avoid the winding and knotting phenomenon during the use of the endoscope and improve the operation efficiency and the cleaning efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a composite wire harness and an endoscope using the same. BACKGROUND

[0002] An endoscope is an optical instrument that is inserted into the body through a natural cavity of the body to achieve visualization of the internal cavity of the organ in the body for examination and treatment. The endoscope includes an insertion tube and a lens assembly arranged at the end of the insertion tube. An external device realizes light guiding and electrical signal transmission functions for the lens assembly through a light guide and an electrical signal line, respectively. In the existing scheme, the light guide 1 and the electrical signal line 2 are independently wired and inserted into the inside of the insertion tube 3 at the end of the hand-held end of the insertion tube 3, respectively. This way causes the two wire harnesses to easily entangle and knot when a medical staff uses the endoscope, resulting in low operation efficiency. Meanwhile, the two wire harnesses need to be cleaned and disinfected separately, which increases the workload and difficulty of the cleaning and disinfection process. SUMMARY

[0003] The main purpose of the present application is to provide a composite wire harness and an endoscope, which aims to avoid the entanglement and knotting phenomenon when the endoscope is used, and to improve the operation efficiency and cleaning efficiency.

[0004] To achieve the above-mentioned purpose, the composite wire harness provided by the present application is used in an endoscope, and the endoscope includes an insertion tube. The composite wire harness includes:

[0005] A composite tube having a wire inlet end and a wire outlet end, the wire inlet end and the wire outlet end being in communication and forming a wire routing space;

[0006] A wire inlet connector fixed to the wire inlet end, the wire inlet connector having a wire passing hole in communication with the wire routing space, and the wire inlet connector having a cable inlet and an optical cable inlet in communication with the wire passing hole; and

[0007] A wire outlet connector fixed to the wire outlet end and connected to the insertion tube, the wire outlet connector having a wire passing channel in communication with the wire routing space;

[0008] The cable and the optical cable enter the wire routing space from the cable inlet and the optical cable inlet, respectively, and are inserted into the insertion tube through the wire passing channel.

[0009] In an embodiment of the present application, the wire inlet connector includes a wire inlet connector main body, the wire inlet connector main body having the cable inlet and the optical cable inlet, and the wire inlet connector main body further having a wire passing hole in communication with the wire routing space. The cable inlet, the optical cable inlet, and the wire passing hole are detachably connected to a clamping head. Each clamping head fixes the cable, the optical cable, and the composite tube to the wire inlet connector main body.

[0010] A first sealing sheath is wrapped around the surface of the incoming line head body, and the first sealing sheath is in sealing abutment with the outer surfaces of the cable, the optical cable, and the composite tube, respectively.

[0011] In an embodiment of the present application, the outer sheath of at least part of the cable is stripped at the cable inlet, and the outer sheath of at least part of the optical cable is stripped at the optical cable inlet, so that each clamping head fixes the shielding layer of the cable and the optical cable with the incoming line head body.

[0012] In an embodiment of the present application, the wire passing hole and the optical cable inlet are located at two ends of the length direction of the incoming line head body, and the cable inlet and the optical cable inlet are independently arranged.

[0013] In an embodiment of the present application, the central axis of the wire passing hole is arranged in a line with the central axis of the optical cable inlet, and the central axis of the cable inlet is arranged at an angle with the central axis of the optical cable inlet; the wire diameter of the cable is smaller than the wire diameter of the optical cable.

[0014] The distance between the optical cable inlet and the cable inlet is greater than 3 mm.

[0015] In an embodiment of the present application, the cross section of the composite tube is oval, and the cable and the optical cable are arranged side by side in the wire routing space.

[0016] Or, the cross section of the composite tube is circular, and the inner wall surface of the composite tube is provided with a total shielding layer; the cable is stripped in the wire routing space, and each core wire ring of the cable is arranged around the outer periphery of the optical cable.

[0017] In an embodiment of the present application, the outgoing line connector comprises:

[0018] An outgoing line head body, the wire passing channel penetrates through the two end surfaces of the outgoing line head in the length direction, and the outgoing line head body is further provided with a fixed hole communicating with the wire passing channel at one end close to the incoming line connector; at least part of the outgoing line end is inserted into the wire passing channel, and the composite tube passes through the fixed hole through the connecting piece and abuts against the surface of the composite tube to be fixed with the outgoing line head body; and

[0019] A second sealing sheath is wrapped around one end of the outgoing line head body close to the incoming line connector, and is in sealing abutment with the outer surface of the composite tube.

[0020] The wire passing channel is filled with glue and sealed at one end away from the incoming line connector.

[0021] In an embodiment of the present application, the cross-sectional size of the wire passage gradually increases from one end close to the incoming wire joint to the other end away from the incoming wire joint.

[0022] In an embodiment of the present application, the outgoing wire joint further comprises:

[0023] a fixing ring arranged in the wire passage, an outer ring of the fixing ring abutting against an inner wall surface of the wire passage, the electric cable and the optical cable passing through an inner ring of the fixing ring and extending out of the wire passage.

[0024] In an embodiment of the present application, the outgoing wire joint further comprises:

[0025] an insulating pad arranged between an outer peripheral surface of the composite tube and an inner wall surface of the wire passage.

[0026] In an embodiment of the present application, an outer peripheral surface of the outgoing wire joint body is provided with a connecting boss, the outgoing wire joint further comprises a connecting cap clamped to a surface of the connecting boss facing the incoming wire joint, and the connecting cap is used for fixedly connecting with the insertion tube.

[0027] In an embodiment of the present application, the outgoing wire joint further comprises a sealing ring, an inner wall surface of the connecting cap is provided with a sealing groove, and the sealing ring is arranged in the sealing groove.

[0028] And / or, the outgoing wire joint further comprises a gasket arranged between the connecting cap and the connecting boss.

[0029] In an embodiment of the present application, the composite wire harness further comprises a circuit board fixed in the wire passage, the electric cable is connected with the circuit board in the wire passage, at least part of a structure of the circuit board extends out of an outer side of the wire passage to be connected with an electric signal interface of the insertion tube, and a braided shielding layer of the electric cable is connected with the outgoing wire joint.

[0030] The optical cable passes through the wire passage to be connected with an optical interface of the end of the insertion tube.

[0031] The present application further provides an endoscope comprising an insertion tube and the composite wire harness, wherein the composite wire harness comprises:

[0032] a composite tube having an incoming wire end and an outgoing wire end, the incoming wire end and the outgoing wire end being communicated and formed with a wire routing space;

[0033] an incoming wire joint fixed to the incoming wire end, the incoming wire joint being provided with an electric cable inlet and an optical cable inlet respectively communicating with the wire routing space; and

[0034] An outlet connector is fixed to the outlet end and connected to the insertion tube, and is provided with a wire passage communicating with the wire space;

[0035] The cables and optical cables enter the wire space from the cable inlet and the optical cable inlet respectively, and are inserted into the insertion tube through the wire passage.

[0036] The composite wire harness of the technical scheme is used for an endoscope, and comprises a composite tube, a wire inlet connector and an outlet connector. The wire inlet connector and the outlet connector are connected to the wire inlet end and the wire outlet end of the composite tube respectively. The cables and optical cables enter the wire space from the cable inlet and the optical cable inlet of the wire inlet connector respectively, and are inserted into the insertion tube through the wire passage of the outlet connector. Since the cables and optical cables are integrated into a whole through the composite wire harness before entering the insertion tube, the phenomenon of entanglement and knotting of the cables and optical cables outside the insertion tube during use of the endoscope is avoided, and the operation efficiency is improved. Meanwhile, only the composite wire harness needs to be cleaned during cleaning, the difficulty of cleaning is reduced, and the cleaning efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of the drawings shown.

[0038] Figure 1 It is a structural schematic diagram of an endoscope in the prior art.

[0039] Figure 2 It is a structural schematic diagram of an embodiment of the composite wire harness of the present application.

[0040] Figure 3 It is Figure 2 It is a sectional view of the wire inlet connector.

[0041] Figure 4 It is Figure 2 It is a structural schematic diagram of an embodiment of the composite tube in the present application.

[0042] Figure 5 It is Figure 2 It is a structural schematic diagram of another embodiment of the composite tube in the present application.

[0043] Figure 6 It is Figure 2 It is a sectional view of the outlet connector.

[0044] Figure 7 It is Figure 2 It is a sectional view of the optical interface.

[0045] Explanation of the reference signs:

[0046]

[0047]

[0048] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments in conjunction with the accompanying drawings. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0050] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directionality indications also change accordingly.

[0051] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel solutions, for example, "A and / or B" includes A solution, or B solution, or A and B solutions at the same time. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that those skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0053] The application provides a composite wire harness 100.

[0054] With reference to Figure 2 The composite wire harness 100 is used for an endoscope (not shown), the endoscope comprises an insertion tube (not shown), and the composite wire harness 100 comprises:

[0055] A composite tube 10, the composite tube 10 has a wire inlet end (not shown) and a wire outlet end (not shown), the wire inlet end and the wire outlet end are communicated and formed with a wire space (not shown);

[0056] A wire inlet connector 20, the wire inlet connector 20 is fixed to the wire inlet end, the wire inlet connector 20 is further provided with a wire hole 215 communicated with the wire space, the wire inlet connector 20 is provided with a cable inlet 211 and an optical cable inlet 213 communicated with the wire hole 215 respectively; and

[0057] A wire outlet connector 30, the wire outlet connector 30 is fixed to the wire outlet end and connected with the insertion tube, the wire outlet connector 30 is provided with a wire passing channel 311 communicated with the wire space;

[0058] A cable 70 and an optical cable 60 enter the wire space from the cable inlet 211 and the optical cable inlet 213 respectively and are inserted into the insertion tube through the wire passing channel 311.

[0059] The composite wire harness 100 is used for an endoscope, the composite wire harness 100 comprises the composite tube 10, the wire inlet connector 20 and the wire outlet connector 30, the wire inlet connector and the wire outlet connector 30 are connected to the wire inlet end and the wire outlet end of the composite tube 10 respectively, the cable 70 and the optical cable 60 enter the wire space from the cable inlet 211 and the optical cable inlet 213 of the wire inlet connector 20 respectively and are inserted into the insertion tube through the wire passing channel 311 of the wire outlet connector 30. Since the cable 70 and the optical cable 60 are integrated into a whole through the composite wire harness 100 when entering the insertion tube, the cable 70 and the optical cable 60 are prevented from being wound and knotted outside the insertion tube when the endoscope is used, and the operation efficiency is improved. Meanwhile, when cleaning, only the composite wire harness 100 needs to be cleaned, the cleaning difficulty is reduced, and the cleaning efficiency is improved.

[0060] In an embodiment of the application, one end of the optical cable 60 is connected with a cold light source device, and the end of the optical cable 60 close to the insertion tube is interconnected with a light source interface inside the endoscope device through the optical interface 40, so as to realize light guiding for a lens module of the endoscope.

[0061] The optical cable 60 comprises, from outside to inside, an outer sheath 61, an armor 63, a middle sheath 65, and a light guide bundle 67. The outer sheath 61 is an outer insulation protective layer of the light guide bundle 67; the armor 63 can avoid damage of the light guide bundle 67 under external force; the middle sheath 65 is arranged between the light guide bundle 67 and the armor 63, and is an insulation buffer medium, and the middle sheath 65 has a bundling effect on the light guide bundle 67; the light guide bundle 67 is a product that collects a plurality of fiber light guide wires made of glass or plastic into a bundle to achieve the purpose of light guiding; when the optical cable 60 penetrates into the inside of the endoscope, the outer sheath 61 and the armor 63 of the light guide bundle 67 are removed.

[0062] The cable 70 is provided with an aviation head interface at one end, and the one end of the cable 70 is connected with a video processing and display device; the end of the cable 70 close to the insertion tube is interconnected with an electrical signal interface inside the endoscope device through a power signal interface and a high-speed signal interface, so as to supply power for a lens module of the endoscope. The cable 70 comprises, from outside to inside, an outer sheath 71, a braided shielding layer 73, and a core wire 75, wherein the core wire 75 comprises an electronic wire 751 and a video signal wire 753. The outer sheath 71 of the cable 70 and the outer sheath 61 of the optical cable 60 have the same material and function, and are both outer insulation protective layers; the braided shielding layer 73 is an electromagnetic shielding structure of the electronic wire 751; and the core wire 75 is used for electrical signal transmission. When the cable 70 penetrates into the inside of the endoscope, the outer sheath 71 of the cable 70 is removed.

[0063] The composite wire harness 100 integrates the optical cable 60 and the cable 70 of the endoscope into one whole before entering the insertion tube through the composite tube 10, the wire inlet joint 20, and the wire outlet joint 30, optimizes the wiring mode of the optical cable 60 and the cable 70 before entering the insertion tube, and only one composite wire harness 100 penetrates into the insertion tube when a medical staff holds the endoscope to operate, so that the optical cable 60 and the cable 70 are prevented from being wound and knotted on the outside of the insertion tube, and the convenience of operation is improved.

[0064] In an embodiment, when the optical cable 60 and the cable 70 are fixedly connected with the wire inlet joint 20, the fixed connection can be directly achieved in a close-fitting manner; in other embodiments, when the optical cable 60 and the cable 70 are fixedly connected with the wire inlet joint 20, the optical cable 60 and the cable 70 can be subjected to sheath removal treatment at the fixed position of the wire inlet joint 20, so as to achieve firm connection of the optical cable 60 and the cable 70 with the wire inlet joint 20.

[0065] Reference Figure 3In an embodiment of the present application, the incoming line joint 20 comprises an incoming line head body 21, the incoming line head body 21 is provided with a cable inlet 211 and an optical cable inlet 213, the cable inlet 211, the optical cable inlet 213 and the wire hole 215 are detachably connected with a clamping head 23, and each clamping head 23 respectively fixes the cable, the optical cable 60 and the composite pipe 10 with the incoming line head body 21.

[0066] The first sealing sheath 25 is wrapped on the surface of the incoming line head body 21, and the first sealing sheath 25 is in sealing abutment with the outer surfaces of the cable 70, the optical cable 60 and the composite pipe 10 respectively.

[0067] In an embodiment of the present application, the cable inlet 211 and the optical cable inlet 213 are independently arranged, that is, the cable inlet 211 and the optical cable inlet 213 are two different interfaces, the incoming line head body 21 is a three-way structure, and the cable 70 and the optical cable 60 respectively extend into the incoming line head body 21 through two different interfaces, so that the cable inlet 211 and the optical cable inlet 213 can be sealed respectively to improve the reliability of the sealing.

[0068] The wire hole 215 and the optical cable inlet 213 are respectively located at two ends of the length direction of the incoming line head body 21, so that the damage of the optical cable 60 caused by excessive bending when being fixed in the incoming line head body 21 can be avoided. The cable inlet 211 is perpendicular to the length direction of the incoming line head body 21, so that the wiring of the optical cable 60 and the cable 70 before entering the incoming line head body 21 is facilitated, so that the optical cable 60 and the cable 70 are respectively connected with the cold light source device and the video processing device. The incoming line head body 21 is a metal piece to improve the strength of the structure. Each clamping head 23 can be connected with the incoming line head body 21 through a threaded structure or a buckle connection, and each clamping head 23 ensures the reliability of the connection between the cable 70, the optical cable 60 and the composite pipe 10 and the incoming line head body 21.

[0069] Please continue to refer to Figure 3 In an embodiment of the present application, the central axis of the wire hole 213 and the central axis of the optical cable inlet 213 are arranged in a same line, the central axis of the cable inlet 211 and the central axis of the optical cable inlet 213 are arranged at an angle, the diameter of the cable 70 is smaller than the diameter of the optical cable 60, and the distance between the cable inlet 211 and the optical cable inlet 213 is greater than 3mm.

[0070] In an embodiment of the present application, the angle between the cable inlet 211 and the optical cable inlet 213 is greater than 0 degrees and less than 180 degrees, the central axes of the cable inlet 211 and the optical cable inlet 213 can be horizontally arranged, or the central axis of the cable inlet 211 is vertically arranged and the central axis of the optical cable inlet 213 is horizontally arranged. The diameter of the cable 70 is smaller than the diameter of the optical cable 60.

[0071] The wire hole 213 and the optical cable inlet 213 are respectively located at two ends of the length direction of the incoming line head body 21, and the central axis of the wire hole 213 and the central axis of the optical cable inlet 213 are arranged in a line, so that the situation that the optical cable 60 is damaged due to excessive bending when being fixed in the incoming line head body 21 can be avoided. The diameter of the cable 70 is smaller than the diameter of the optical cable 60, so that, after the cable 70 and the optical cable 60 are combined, the offset of the central axis of the optical cable 60 from the wire hole 213 is reduced, and the bending degree of the optical cable 60 is reduced. The distance between the optical cable inlet 213 and the cable inlet 211 refers to the minimum distance between the optical cable inlet 213 and the cable inlet 211 in the hollow structure inside the incoming line head body 21, and the distance can be 3 mm, 5 mm, 8 mm, 10 mm, 15 mm, 20 mm, etc. By setting the minimum distance between the optical cable inlet 213 and the cable inlet 211 to be greater than 3 mm, the situation that the optical cable 60 is excessively bent when the cable 70 and the optical cable 60 are combined can be reduced, and the situation that the optical cable 60 is damaged due to excessive bending can be avoided. It can be understood that the greater the minimum distance between the optical cable inlet 213 and the cable inlet 211, the smaller the bending degree of the optical cable 60.

[0072] In an embodiment, when the clamping head 23 is connected to the incoming line head body 21 through the threaded structure, at this time, the outer sheaths of the cable 70 and the optical cable 60 can be stripped, so that the shielding layers of the wires are exposed, and the shielding layers of the wires can be extruded during the screw locking process, so as to realize the compression and fixation of the shielding layers and the incoming line head body 21.

[0073] Each clamping head 23 can be formed by injection molding, and the outer surface of the clamping head 23 is formed with a plurality of recesses or protrusion structures arranged at intervals, which can improve the bonding strength between the clamping head 23 and the first sealing sheath 25. The first sealing sheath 25 can be made by injection molding or rubber vulcanization process and has elasticity. The shape of the first sealing sheath 25 is similar to that of the incoming line head body 21, and the first sealing sheath 25 is also formed as a tee structure similar to the structure of the incoming line head body 21, and the inner diameters of the openings of the first sealing sheath 25 are all smaller than the outer diameters of the cable 70, the optical cable 60 and the composite pipe 10, so that the first sealing sheath 25 can be tightly attached to the surfaces of the cable 70, the optical cable 60 and the composite pipe 10, and has good sealing and waterproof performance.

[0074] Referring to Figure 4 and Figure 5 In an embodiment of the present application, the cross section of the composite pipe 10 is elliptical, and the cable 70 and the optical cable 60 are arranged side by side in the wire routing space, or the cross section of the composite pipe 10 is circular, and the inner wall surface of the composite pipe 10 is provided with a total shielding layer 11. The cable 70 is stripped in the wire routing space, and the core wires 75 of the cable 70 are arranged around the outer periphery of the optical cable 60.

[0075] In an embodiment of the present application, the cross section of the composite tube 10 can have various shapes, for example, the cross section of the composite tube 10 is elliptical, at this time, the composite tube 10 is flat, at this time, the cable 70 and the optical cable 60 can be arranged side by side in the wiring space, which is beneficial to the flat design of the composite wire harness 100. When the cross section of the composite tube 10 is elliptical, the cable 70 does not need to be stripped in the wiring space, at this time, the total shielding layer 11 does not need to be arranged on the inner wall surface of the composite tube 10.

[0076] In an embodiment, when the cross section of the composite tube 10 is circular, at this time, the outer sheath 61 and the woven shield of the cable 70 are stripped, and each core wire 75 after stripping is not bound and can be arranged in the wiring space, at this time, each core wire 75 in the cable 70 can be arranged around the outer periphery of the optical cable 60, so as to reduce the cross section size of the composite tube 10. Since the outer sheath 71 and the woven shield of the cable 70 are stripped, at this time, the total shielding layer 11 needs to be arranged on the inner wall surface of the composite tube 10 to wrap the stripped cable 70, so as to realize the shielding of the electrical signal.

[0077] Referring to Figure 6 In an embodiment of the present application, the outgoing terminal 30 comprises:

[0078] The outgoing terminal body 31, the through line channel 311 penetrates through the two end surfaces of the outgoing terminal body 31 in the longitudinal direction, and the outgoing terminal body 31 is further provided with a connecting through line channel 311 fixing hole 313 close to one end of the incoming terminal 20, at least part of the outgoing terminal is inserted into the through line channel 311, and the composite tube 10 passes through the fixing hole 313 and abuts against the surface of the composite tube 10, so as to be fixed with the outgoing terminal body 31; and

[0079] The second sealing sheath 34 is wrapped around one end of the outgoing terminal body 31 close to the incoming terminal 20 and abuts against the outer surface of the composite tube 10 in a sealed manner;

[0080] The through line channel 311 is filled with glue and sealed away from one end of the incoming terminal 20.

[0081] In the technical scheme of one embodiment of the present application, the outlet head body 31 is a metal piece to improve the strength of the structure. The outlet head body 31 is generally in a columnar structure, and the wire passing channel 311 penetrates through two opposite end faces of the outlet head body 31. The cross-sectional size of the wire passing channel 311 gradually increases from the end close to the incoming wire joint 20 to the end away from the incoming wire joint 20, and the cross-sectional size of the end of the wire passing channel 311 close to the incoming wire joint 20 is relatively small to facilitate the fitting of the composite pipe 10. The inner diameter of the end of the wire passing channel 311 away from the incoming wire joint 20 is relatively large to facilitate the independent movement of the cable 70 and the optical cable 60 through the wire passing channel 311. The outlet head body 31 is provided with a fixing hole 313 connected to the wire passing channel 311, and a connecting piece such as a screw or a pin penetrates through the fixing hole 313 and abuts against the surface of the composite pipe 10 to fix the composite pipe 10. The screw locking mode improves the reliability of the connection between the composite pipe 10 and the outlet head body 31.

[0082] In one embodiment, an insulating pad 33 can also be arranged between the outer circumferential surface of the composite pipe 10 and the inner wall surface of the wire passing channel 311. The insulating pad 33 can be deformed when the connecting piece is locked with the composite pipe 10 to avoid damage to the composite pipe 10 caused by extrusion of the connecting piece. At the same time, the insulating pad 33 also improves the reliability of the connection between the composite pipe 10 and the outlet head body 31.

[0083] The second sealing sheath 34 can be made by injection molding or rubber vulcanization process and has elasticity. The second sealing sheath 34 is in a sleeve structure, and the opening of the second sealing sheath 34 is smaller than the outer diameter of the composite pipe 10, so that the second sealing sheath 34 can be tightly attached to the surface of the composite pipe 10 to have good sealing and waterproof performance. Moreover, since the second sealing sheath 34 has elasticity, it can also achieve the protection of the composite pipe 10 against bending and torsional force. The end of the outlet head body 31 away from the incoming wire joint 20 is filled with potting glue, and the use of potting pieces for sealing can improve the waterproof performance.

[0084] Please continue to refer to Figure 6 In one embodiment of the present application, the outlet joint 30 further comprises a fixing ring 32 arranged in the wire passing channel 311. The outer ring of the fixing ring 32 abuts against the inner wall surface of the wire passing channel 311, and the cable 70 and the optical cable 60 pass through the inner ring of the fixing ring 32 and extend out of the wire passing channel 311.

[0085] In the technical scheme of one embodiment of the present application, the fixing ring 32 is a magnetic ring. On the one hand, the magnetic ring can improve the reliability of the cable 70 and the optical cable 60 in the wire passing channel 311. On the other hand, the magnetic ring can also achieve signal filtering and improve the high-speed transmission performance of the cable 70.

[0086] Please refer to Figure 6In an embodiment, the composite wire harness 100 further comprises a circuit board 80 fixed in the wire passage 311, the cable is connected with the circuit board 80 in the wire passage 311, at least part of the structure of the circuit board 80 further extends outside the wire passage 311 to be connected with the electrical signal interface of the plug-in tube, and the braided shielding layer of the cable is further connected with the outlet connector 30.

[0087] The circuit board 80 can convert the high-speed signal and the low-frequency signal from the wire to the PCB board to facilitate the signal conversion, part of the circuit board 80 is accommodated in the outlet connector main body 31, and the other part extends outside the outlet connector main body 31, and a board end connector is mounted on the extended part of the circuit board 80, so that the circuit board 80 can be fixed and connected with the electrical signal interface of the plug-in tube.

[0088] The cable 70 extends into the wire passage 311 after passing through the fixing ring 32 and is welded with the circuit board 80 in the wire passage 311. The end of the cable 70 welded with the circuit board 80 is stripped, and the braided shielding layer 73 of the cable 70 is further connected with the outlet connector main body 31 through the OT terminal to further shield and protect the electrical signal. In addition, the braided shielding layer 73 of the cable 70 can be connected with the outlet connector main body 31 through back folding or wrapping copper foil and then being locked by screws or being locked by pressure connection. The braided shielding layer 73 of the cable 70 is fixedly connected with the outlet connector main body 31, which can shield the interference of external elements on the electrical signal and improve the reliability of the connection between the cable and the outlet connector main body 31.

[0089] Please continue to refer to Figure 6 In an embodiment of the present application, the outer circumferential surface of the outlet connector main body 31 is provided with a connecting boss 315, and the outlet connector 30 further comprises a connecting cap 35 clamped on the surface of the connecting boss 315 facing the inlet connector 20, and the connecting cap 35 is used to be fixedly connected with the plug-in tube.

[0090] In the technical solution of an embodiment of the present application, the connecting boss 315 on the outer circumferential surface of the outlet connector main body 31 is an integral structure with the outlet connector main body, and the connecting cap 35 is fixed with the outlet connector main body 31 through the connecting boss 315. By arranging the connecting cap 35, the outlet connector 30 is also conveniently fixed with the plug-in tube.

[0091] In an embodiment of the present application, the outlet connector 30 further comprises a sealing ring 36, the inner wall surface of the connecting cap 35 is provided with a sealing groove 351, and the sealing ring 36 is arranged in the sealing groove 351; the outlet connector 30 further comprises a gasket 37 arranged between the connecting cap 35 and the connecting boss 315.

[0092] In the technical scheme of one embodiment of the present application, the number of the sealing rings 36 can be one or multiple. When multiple sealing rings 36 are provided, the multiple sealing rings 36 are arranged at intervals. The sealing rings 36 can be arranged at the sealing groove 351 where the sealing rings 36 are fixed, and the sealing rings 36 are used to improve the sealing and waterproof performance of the connection between the outlet connector 30 and the plug-in connection.

[0093] In the technical scheme of one embodiment of the present application, the gasket 37 is arranged between the connecting cap 35 and the connecting boss 315, which can improve the reliability of the connection between the connecting cap 35 and the outlet connector main body 31, and avoid the rigidity of the connection between the outlet connector main body 31 and the connecting cap 35, thereby improving the service life.

[0094] Referring to Figure 7 In one embodiment of the present application, after the optical cable 60 passes through the outlet connector, the optical cable 60 is quickly connected with the interface inside the endoscope through the optical interface 40. The optical interface 40 includes a connecting shell 41 and a locking cap 43. The connecting shell 41 is provided with a through hole 411, and the optical cable 60 is arranged in the through hole 411 after stripping. The locking cap 43 is connected with the end of the connecting shell 41 away from the outlet connector 30, and is sealed by potting conductive glue. The optical interface 40 also includes a clamping cap 47 similar to the structure of the connecting cap 35 in the outlet connector 30, and the structure of the clamping cap 47 will not be described here. Further, in order to improve the use feeling, a spring piece 45 is arranged between the clamping cap and the connecting shell 41.

[0095] The present application also provides an endoscope, which includes an insertion tube and a composite wire harness 100. The specific structure of the composite wire harness 100 is referred to the above embodiments. Since the endoscope adopts all the technical schemes of the above embodiments, it at least has all the beneficial effects brought by the technical schemes of the above embodiments, which will not be described here. The lens of the endoscope is arranged at the end of the insertion tube away from the composite wire harness 100.

[0096] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made according to the content of the present application specification and drawings, or direct / indirect application in other related technical fields within the inventive concept of the present application is included in the patent protection scope of the present application.

Claims

1. A composite wire harness for an endoscope including an insertion tube, characterized by, The composite wire harness comprises: a composite tube having an inlet end and an outlet end, the inlet end and the outlet end being in communication and formed with a wire routing space; an inlet connector fixed to the inlet end, the inlet connector being provided with a wire hole in communication with the wire routing space, the inlet connector being provided with a cable inlet and an optical cable inlet in communication with the wire hole respectively; and an outlet connector fixed to the outlet end and connected with the insertion tube, the outlet connector being provided with a wire passage in communication with the wire routing space; a cable and an optical cable entering the wire routing space from the cable inlet and the optical cable inlet respectively, and being inserted into the insertion tube through the wire passage; the structure of the inlet connector is different from that of the outlet connector; the inlet connector comprises an inlet head main body provided with the cable inlet and the optical cable inlet, the wire hole and the optical cable inlet being located at two ends of the length direction of the inlet head main body respectively, the cable inlet and the optical cable inlet being independently arranged, and the included angle between the cable inlet and the optical cable inlet being greater than 0 degrees and less than 180 degrees, the distance between the cable inlet and the optical cable inlet being greater than 3 mm; the wire passage penetrates through both ends of the outlet connector in the axial direction, the size of the cross section of the wire passage gradually increases from the end close to the inlet connector to the end away from the inlet connector, the outlet connector further comprises a fixing ring, the fixing ring being a magnetic ring, the fixing ring being arranged in the wire passage, the outer ring of the fixing ring being in abutment with the inner wall of the wire passage, the cable and the optical cable passing through one end of the wire passage and the inner ring of the fixing ring and extending out of the other end of the wire passage; the composite wire harness further comprises a circuit board fixed in the wire passage, the cable being connected with the circuit board in the wire passage, at least part of the structure of the circuit board extending out of the wire passage, the extending part of the circuit board being provided with a board end connector for connecting with the electrical signal interface of the insertion tube, the braided shielding layer of the cable being further connected with the outlet connector through an OT terminal; the optical cable is connected with the optical interface of the end of the insertion tube through the wire passage.

2. The composite bundle of claim 1, wherein, The cable inlet, the optical cable inlet and the wire hole are detachably connected with a clamping head, each clamping head fixing the cable, the optical cable and the composite tube with the inlet head main body, the inlet connector further comprises a first sealing sheath wrapped on the surface of the inlet head main body, and the first sealing sheath is in sealing abutment with the outer surface of the cable, the optical cable and the composite tube respectively.

3. The composite bundle of claim 2, wherein, At least part of the outer sheath of the cable is stripped at the cable inlet, and at least part of the outer sheath of the optical cable is stripped at the optical cable inlet, so that each clamping head fixes the shielding layer of the cable and the optical cable with the inlet head main body.

4. The composite bundle of claim 1, wherein, The central axis of the wire hole is arranged in line with the central axis of the optical cable inlet, and the central axis of the cable inlet is arranged at an angle with the central axis of the optical cable inlet; the wire diameter of the cable is smaller than that of the optical cable.

5. The composite bundle of claim 1, wherein, The cross section of the composite tube is oval, and the cable and the optical cable are arranged side by side in the cabling space. Or, the cross section of the composite tube is circular, and the inner wall surface of the composite tube is provided with a total shielding layer, the cable is stripped in the cabling space, and each core wire ring of the cable is arranged around the optical cable.

6. The composite harness of any one of claims 1 to 5, wherein, The outgoing joint comprises: The outgoing head body, the wire passing channel penetrates through the two end faces of the outgoing head body in the length direction, and the outgoing head body is provided with a fixed hole communicating with the wire passing channel at one end close to the incoming joint, at least part of the outgoing end is inserted into the wire passing channel, and the composite tube passes through the fixed hole and abuts against the surface of the composite tube to be fixed with the outgoing head body; and The second sealing sheath is wrapped around one end of the outgoing head body close to the incoming joint and sealingly abuts against the outer surface of the composite tube. The wire passing channel is filled with glue and sealed at one end away from the incoming joint.

7. The composite bundle of claim 6, wherein, The outgoing joint further comprises: The insulating pad is arranged between the outer peripheral surface of the composite tube and the inner wall surface of the wire passing channel.

8. The composite bundle of claim 6, wherein, The outer peripheral surface of the outgoing head body is provided with a connecting boss, and the outgoing joint further comprises a connecting cap, the connecting cap is clamped to the surface of the connecting boss facing the incoming joint, and the connecting cap is used for fixed connection with the insertion tube.

9. The composite bundle of claim 8, wherein, The outgoing joint further comprises a sealing ring, the inner wall surface of the connecting cap is provided with a sealing groove, and the sealing ring is arranged in the sealing groove. And / or, the outgoing joint further comprises a gasket, and the gasket is arranged between the connecting cap and the connecting boss.

10. An endoscope characterized by comprising: The endoscope comprises an insertion tube and a composite wire harness as claimed in any one of claims 1 to 9.

Images