Medical optical fiber cable and medical equipment

Abstract

The utility model relates to a medical optical fiber cable and medical equipment, the medical optical fiber cable comprises an optical cable sheath and an optical fiber structure, the optical fiber structure is located in the optical cable sheath, and the optical fiber structure comprises an image transmission optical fiber and a plurality of functional optical fibers; each of the image transmitting optical fiber and the functional optical fiber comprises an optical fiber cladding and an optical fiber coating arranged outside the optical fiber cladding, the image transmitting optical fiber further comprises an image transmitting fiber core arranged in the optical fiber cladding, and the functional optical fiber further comprises a functional fiber core arranged in the optical fiber cladding. According to the medical optical fiber cable, on the basis that the image transmitting fiber core is used for achieving the image transmitting function, the functional optical fiber with the functional fiber core is designed in the optical cable, and according to the actual function requirement, the functional optical fiber is used for enabling the medical optical fiber cable to have other functions except the basic image transmitting function at the same time, such as the illumination or laser transmission function; therefore, the optical fiber cable provided by the utility model is a multifunctional optical fiber cable integrating multiple technologies, so that related medical activities can be better carried out.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical fiber cables, in particular to a medical optical fiber cable and medical equipment. BACKGROUND

[0002] With the rapid development of optical fiber technology, its application in the medical field is also more and more. For example, the diameter of the conventional endoscope is at least several tens of millimeters, and the magnification is only about 50 times, which can only see the general appearance of the tissue, while the new type of lensless optical fiber microscopic endoscope imaging technology is only as small as a embroidery needle, but has a super high magnification of 1000 times, which can let the doctor "see" the surface cells of the tissue at the same time, greatly reducing the pain of the patient. The optical fiber endoscope probe can be bent, which is a 0.016 inch (~ 400 μm) diameter filamentous catheter, which can travel in the curved intracranial structure, does not need a guide wire navigation, and can be transported along the distal neurovascular catheter; at the same time, the input probe can be pulled back at a certain speed, and through the imaging lens rotating quickly in the protective sleeve, the surrounding arteries and devices are continuously spiral imaged with an axial resolution of about 10 μm. In addition, laser interstitial thermotherapy is also in development, which is a stereotactic guided percutaneous minimally invasive surgery, and the laser acts on the target point through the optical fiber, thereby selectively ablating the diseased tissue. The biggest advantage of this technology is that it can realize precise ablation treatment of deep brain lesions under the real-time guidance and monitoring of magnetic resonance, has the advantages of laser precise positioning and temperature controllability, and is applied to the treatment of glioma, metastatic tumor, epileptic focus and epidural metastatic tumor. During the operation, a small incision about 2-4 mm wide is first needed on the skin of the affected part, then a laser optical fiber probe is inserted therein, and finally the probe is guided to the position of the lesion target, and the tumor tissue can be ablated or burned by using pulsed laser.

[0003] However, these technologies are single technologies, and cannot be popularized. The reason is that in actual application, there is no light source in the human body, and it is impossible to obtain sufficient light intensity to make the optical fiber imaging quality higher, which affects the judgment result. In addition, since the optical fiber imaging and the laser surgery are separate, it also brings the problem of secondary surgery, and the slight change of the human body tissue after the previous imaging will also affect the implementation of the subsequent laser surgery, causing adverse effects of the operation.

[0004] Therefore, the current single technology cannot better perform related medical operations. SUMMARY

[0005] The embodiments of the present application provide a medical optical fiber cable and medical equipment to solve the problem that the single technology in the related art cannot better perform related medical operations.

[0006] In a first aspect, a medical optical fiber cable is provided, comprising:

[0007] cable jacket;

[0008] an optical fiber structure located in the cable jacket, and the optical fiber structure comprises an image transmission fiber and a plurality of functional fibers, the image transmission fiber and the functional fibers each comprise a fiber cladding and a fiber coating disposed outside the fiber cladding, the image transmission fiber further comprises an image transmission core disposed in the fiber cladding, and the functional fibers further comprise functional cores disposed in the fiber cladding.

[0009] In some embodiments, the image transmission core and the functional cores are located in the same fiber cladding;

[0010] Alternatively, the image transmission core and each of the functional cores are located in different fiber claddings respectively.

[0011] In some embodiments, when the image transmission core and each of the functional cores are located in different fiber claddings respectively, the optical fiber structure further comprises a bendable reinforcing member, and the image transmission fiber and the functional fibers are twisted on the reinforcing member.

[0012] In some embodiments, the reinforcing member is a flexible fiber reinforced plastic rod.

[0013] In some embodiments, at least one of the functional cores is an illumination core;

[0014] and / or, at least one of the functional cores is a laser core.

[0015] In some embodiments, the illumination core is made of germanium-doped quartz glass;

[0016] and / or, the numerical aperture NA of the illumination core is 0.18-0.22;

[0017] and / or, the diameter of the illumination core is 50-100 μm;

[0018] and / or, the exit end of the illumination core is provided with a diffusion lens for diffusing light;

[0019] and / or, when the image transmission core and each of the functional cores are located in different fiber claddings respectively, the functional fiber containing the illumination core is an illumination fiber, and the diameter of the fiber cladding of the illumination fiber is 125 μm, 165 μm, 180 μm or 200 μm, and the diameter of the fiber coating is 220-230 μm.

[0020] In some embodiments, the laser core is made of pure quartz glass;

[0021] and / or, the numerical aperture NA of the laser core is 0.19-0.22;

[0022] and / or, the diameter of the laser fiber core is 100-200 μm;

[0023] and / or, the exit end of the laser fiber core is provided with a collimating structure for focusing laser;

[0024] and / or, the image transmission fiber core and each of the functional fiber cores are respectively located in different fiber cladding, the functional fiber containing the laser fiber core is a laser fiber, the diameter of the fiber cladding of the laser fiber is 200 μm, and the diameter of the fiber coating is 220-230 μm.

[0025] In some embodiments, the image transmission fiber core is a large-core fiber core containing a number of sub-fiber cores exceeding a first design value, the first design value is not less than 10,000; and / or, the numerical aperture NA of the image transmission fiber core is not less than 0.25; and / or, the diameter of the sub-fiber core is 1-2 μm; and / or, the exit end of the image transmission fiber core is provided with a spherical lens for expanding the range of incident light, and the exit end is provided with a photosensitive element;

[0026] Alternatively, the image transmission fiber core is a large-core fiber core with a diameter of 200-500 μm; and / or, the numerical aperture NA of the image transmission fiber core is not less than 0.22; and / or, the exit end of the image transmission fiber core is provided with a spherical lens for expanding the range of incident light, and the exit end is provided with a photosensitive element;

[0027] Alternatively, the image transmission fiber core is a large-core fiber core containing a number of photonic crystal fibers exceeding a second design value, the second design value is several hundred; and / or, the numerical aperture NA of the image transmission fiber core is not less than 0.30; and / or, the exit end of the image transmission fiber core is provided with a spherical lens for expanding the range of incident light, and the exit end is provided with a photosensitive element.

[0028] In some embodiments, the image transmission fiber core and each of the functional fiber cores are respectively located in different fiber cladding, at least one of the functional fiber cores is an illumination fiber core, and at least one of the functional fiber cores is a laser fiber core; the diameter of the fiber cladding of the image transmission fiber is 500 μm, and the diameter of the fiber coating is 550 μm.

[0029] and / or, the cable sheath is made of one or more of polytetrafluoroethylene, polyether ether ketone, ETFE, TPU, PP, PE and PBT;

[0030] and / or, the fiber coating is made of one or more of polyacrylic resin, polyimide and silicone resin;

[0031] and / or, the diameter of the medical fiber optic cable is 1000-4000 μm.

[0032] In a second aspect, there is provided a medical device comprising the medical fiber optic cable of any one of the above.

[0033] The beneficial effects brought by the technical solutions provided in the present application include:

[0034] On the basis of realizing the image transmission function by using the image transmission core, the functional fiber with a functional core is designed in the optical cable in the present application, and the medical fiber optic cable has other functions in addition to the basic image transmission function, such as the illumination or laser transmission function, according to the actual functional needs, so that the optical fiber cable of the present application is a multi-functional optical fiber cable integrating multiple technologies, thereby better performing related medical activities. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0036] Figure 1 A medical fiber optic cable schematic diagram provided by the embodiment of the present application (the image transmission core, the illumination core and the laser core are located in the same optical fiber cladding);

[0037] Figure 2 A medical fiber optic cable schematic diagram provided by the embodiment of the present application (the image transmission core, the illumination core and the laser core are located in the same optical fiber cladding);

[0038] Figure 3 A medical fiber optic cable schematic diagram provided by the embodiment of the present application (the image transmission core, the illumination core and the laser core are located in the same optical fiber cladding);

[0039] Figure 4 A medical fiber optic cable schematic diagram provided by the embodiment of the present application (the image transmission core, the illumination core and the laser core are located in the same optical fiber cladding);

[0040] Figure 5 A medical fiber optic cable schematic diagram provided by the embodiment of the present application (the image transmission core, the illumination core and the laser core are located in the same optical fiber cladding);

[0041] Figure 6 A medical fiber optic cable schematic diagram provided by the embodiment of the present application (the image transmission core, the illumination core and the laser core are located in the same optical fiber cladding);

[0042] Figure 7 A medical fiber optic cable schematic diagram provided by the embodiment of the present application (the image transmission core, the illumination core and the laser core are located in the same optical fiber cladding);

[0043] Figure 8Another schematic diagram of the image guide fiber provided by the embodiment of the present application is provided.

[0044] In the figure: 1, cable sheath; 2, image guide fiber core; 20, sub-fiber core; 21, photonic crystal fiber; 3, illumination fiber core; 4, laser fiber core; 5, fiber cladding; 6, fiber coating; 7, reinforcing member. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0046] Referring to Figure 1 and Figure 2 , the embodiment of the present application provides a medical fiber optical cable, which comprises a cable sheath 1 and a fiber structure, the fiber structure is located in the cable sheath 1, and the fiber structure comprises an image guide fiber and a plurality of functional fibers, the image guide fiber and the functional fibers each comprise a fiber cladding 5 and a fiber coating 6 arranged outside the fiber cladding 5, the image guide fiber further comprises an image guide fiber core 2 arranged in the fiber cladding 5, and the functional fiber further comprises a functional fiber core arranged in the fiber cladding 5.

[0047] In the present application, on the basis of realizing the image transmission function by using the image guide fiber core 2, a functional fiber with a functional fiber core is designed in the optical cable. According to actual functional needs, the medical fiber optical cable has other functions in addition to the basic image transmission function, such as illumination or laser transmission function, by using the functional fiber. Therefore, the fiber optical cable of the present application is a multi-functional fiber optical cable integrating multiple technologies, so that the related medical activities can be better performed.

[0048] It can be understood that the type of the functional fiber core can be determined according to actual functional design needs.

[0049] For example, as an example, at least one of the functional fiber cores is an illumination fiber core 3.

[0050] For example, as an example, at least one of the functional fiber cores is a laser fiber core 4.

[0051] It can be understood that the image guide fiber core 2 and the functional fiber core can be combined according to actual functional design needs.

[0052] For example, as an example, if the image transmission, illumination and laser transmission functions need to be realized, referring to Figure 1As shown, the image transmission fiber core 2, the illumination fiber core 3 and the laser fiber core 4 can be simultaneously selected to form a three-core fiber optic cable. See Figure 2 As shown, the image transmission fiber, the illumination fiber and the laser fiber can also be selected to form a three-fiber fiber optic cable.

[0053] For example, if the image transmission and illumination functions are required, see Figure 3 As shown, the image transmission fiber core 2 and the illumination fiber core 3 can be simultaneously selected to form a two-core fiber optic cable. See Figure 4 As shown, the image transmission fiber and the illumination fiber can also be selected to form a two-fiber fiber optic cable.

[0054] For example, if the image transmission and laser transmission functions are required, see Figure 5 As shown, the image transmission fiber core 2 and the laser fiber core 4 can be simultaneously selected to form a two-core fiber optic cable. See Figure 6 As shown, the image transmission fiber and the laser fiber can also be selected to form a two-fiber fiber optic cable.

[0055] It can be understood that, see Figure 1 , Figure 3 and Figure 5 For a multi-core fiber optic cable such as a two-core or a three-core fiber optic cable, a sleeve technology can be used to open a hole on a cladding rod, and then insert a core rod into the hole and melt it into one body. See Figure 2 , Figure 4 and Figure 6 For a multi-fiber fiber optic cable such as a two-fiber or a three-fiber fiber optic cable, the corresponding fibers can be placed in the cable jacket 1.

[0056] It can be understood that the present application can optimize the layout of each fiber core according to the actual size design needs.

[0057] For example, see Figure 2 , Figure 4 or Figure 6 The image transmission fiber core 2 and each of the functional fiber cores are respectively located in different fiber claddings 5.

[0058] For another example, see Figure 1 , Figure 3 or Figure 4 The image transmission fiber core 2 and each of the functional fiber cores are located in the same fiber cladding 5; by sharing the same fiber cladding 5, the size of the fiber optic cable can be further optimized to obtain a fiber optic cable with a smaller outer diameter, which is beneficial for related medical activities.

[0059] When the fiber optic cable needs to have flexible bending capability, the structural design can ensure a small outer diameter while making it flexible, such as, for example, referring to FIG. 1 Figure 2 As shown, the image transmission fiber core 2 and each of the functional fiber cores are respectively located in different fiber cladding 5, at this time the fiber structure further comprises a bendable reinforcing member 7, which is located in the center of the fiber optic cable and makes the image transmission fiber and the functional fiber twisted on the reinforcing member 7. In this application, the reinforcing member 7 not only makes the fiber optic cable stronger than when there is no reinforcing member 7, but also makes the fiber optic cable have flexible bending capability, making the fiber optic cable convenient to use. Since the reinforcing member 7 has both the functions of reinforcing and flexible bending, compared with using two parts to respectively realize the functions of reinforcing and flexible bending, the reinforcing member 7 of this application can ensure a smaller outer diameter of the fiber optic cable.

[0060] Among them, the reinforcing member 7 adopts the commonly used material with flexible bending in the field, such as one or several of flexible fiber reinforced plastic rod, high molecular plastic rod, and the specific flexible fiber reinforced plastic rod and high molecular plastic rod are conventional materials, which will not be repeated here.

[0061] It can be understood that in this application, the illumination fiber core 3 can adopt germanium-doped quartz glass, the numerical aperture NA of the illumination fiber core 3 is 0.18-0.22, the diameter of the illumination fiber core 3 is 50-100 μm, and the exit end of the illumination fiber core 3 is provided with a diffusion lens for diffusing light.

[0062] It can be understood that in this application, the image transmission fiber core 2 and each of the functional fiber cores are respectively located in different fiber cladding 5, the functional fiber containing the illumination fiber core 3 is an illumination fiber, the diameter of the fiber cladding 5 of the illumination fiber is 125 μm, 165 μm, 180 μm or 200 μm, and the diameter of the fiber coating 6 is 220-230 μm.

[0063] It can be understood that in this application, the laser fiber core 4 adopts pure quartz glass, the numerical aperture NA of the laser fiber core 4 is 0.19-0.22, the diameter of the laser fiber core 4 is 100-200 μm, such as 100 μm, 120 μm, 140 μm, 160 μm, 180 μm, 190 μm, and the exit end of the laser fiber core 4 is provided with a collimating structure for focusing laser, which is a collimating lens or a film coating.

[0064] It can be understood that in this application, the image transmission fiber core 2 and each of the functional fiber cores are respectively located in different fiber cladding 5, the functional fiber containing the laser fiber core 4 is a laser fiber, the diameter of the fiber cladding 5 of the laser fiber is 200 μm, and the diameter of the fiber coating 6 is 220-230 μm.

[0065] It is understood that the image transmission fiber core 2 in this application has various structural forms.

[0066] For example, see Figure 7 As shown, the image transmission fiber core 2 is a high-core fiber core containing more than a first design value of sub-fiber cores 20, where the first design value is not less than 10,000. The numerical aperture (NA) of the image transmission fiber core 2 is not less than 0.25, and the diameter of each sub-fiber core 20 is 1 μm to 2 μm. The exit end of the image transmission fiber core 2 is equipped with a spherical lens to expand the range of incident light, and the incident end is equipped with a photosensitive element, which can be connected to a CMOS sensor, etc., to facilitate real-time imaging. It can be understood that each sub-fiber core 20 is drawn from a glass rod into a thin filament, and then combined and drawn together to form a high-core fiber core. A sleeving technique can be used, where holes are made in the cladding rod, and the filaments are arranged and inserted into the holes.

[0067] For example, see [link to example]. Figure 5 As shown, the image transmission fiber core 2 is a large core diameter fiber core with a diameter of 200μm to 500μm. The numerical aperture NA of the image transmission fiber core 2 is not less than 0.22. The exit end of the image transmission fiber core 2 is provided with a spherical lens for expanding the range of incident light, and the incident end is provided with a photosensitive element, which can be connected to CMOS, etc., to facilitate real-time imaging.

[0068] For example, see [link to example]. Figure 8 As shown, the image transmission fiber core 2 is a high-core-count fiber core containing more photonic crystal fibers 21 than the second design value, which is several hundred. The numerical aperture NA of the image transmission fiber core 2 is not less than 0.30. The emitting end of the image transmission fiber core 2 is provided with a spherical lens to expand the incident light range, and the incident end is provided with a photosensitive element, which is connected to CMOS, etc., to facilitate real-time imaging. It can be understood that each photonic crystal fiber 21 can be a grapefruit-shaped photonic crystal fiber. Each photonic crystal fiber 21 is drawn into thin filaments from a glass rod, and then combined together to form a high-core-count fiber core. A sleeving technique can be used, where holes are drilled in the cladding rod, and then the filaments are arranged and inserted into the holes.

[0069] As an example, see Figure 2 As shown, the image transmission fiber core 2 and each of the functional fiber cores are located in different fiber claddings 5, at least one of the functional fiber cores is an illumination fiber core 3, and at least one of the functional fiber cores is an excitation fiber core 4; the diameter of the fiber cladding 5 of the image transmission fiber is 500 μm, and the diameter of the fiber coating 6 is 550 μm.

[0070] It can be understood that in the present application, the optical cable sheath 1 uses one or more of polytetrafluoroethylene, polyether ether ketone, ETFE, TPU, PP, PE and PBT; polytetrafluoroethylene, polyether ether ketone and other materials are corrosion resistant and harmless to the human body.

[0071] It can be understood that in the present application, the optical fiber coating 6 uses one or more of polyacrylic resin, polyimide and silicone resin.

[0072] It can be understood that in the present application, the diameter of the medical optical fiber cable is 1000 μm to 4000 μm, specifically, the diameter of the medical optical fiber cable is generally 1.0 mm to 2.5 mm, and when an image transmission optical fiber containing 10000 sub-cores or photonic crystal optical fibers is used, the diameter of the optical cable can reach 3 mm to 4 mm.

[0073] It can be understood that the present application also provides a medical device comprising the medical optical fiber cable as described above. The medical device can be an endoscope or the like.

[0074] Example 1:

[0075] Referring to Figure 1 A three-core medical optical fiber cable is shown in the figure, which collects the cores of optical fibers for three purposes in one same optical fiber cladding 5, reduces the outer diameter of the optical cable, and has the functions of image transmission, illumination and laser energy transmission. The outer diameter of the optical fiber cladding 5 is 1000 μm; the diameter of the image transmission core 2 is 450 μm; the diameter of the illumination core 3 is 75 μm; the diameter of the laser core 4 is 150 μm; the outer diameter of the optical fiber coating 6 is 1100 μm, and the material of the optical fiber coating 6 is ultraviolet light-cured polyacrylic resin; then a layer of high polymer material is extruded to form an optical cable sheath 1, the material of the optical cable sheath 1 is polytetrafluoroethylene, the thickness of the optical cable sheath 1 is 0.2 mm, and the outer diameter of the optical cable is 1.6 mm.

[0076] Example 2:

[0077] Referring to Figure 2 A three-core medical optical fiber cable with a central reinforcing member is shown in the figure, which twists three-purpose optical fibers in one optical cable sheath 1, reduces the outer diameter of the optical cable, and has good flexibility.

[0078] The diameter of the optical fiber cladding outside the image transmission core is 500 μm, the outer diameter of the optical fiber coating 6 formed after the optical fiber is coated is 550 μm, and the material is ultraviolet light-cured polyacrylic resin;

[0079] The diameter of the optical fiber cladding outside the illumination core is 125 μm, the outer diameter of the optical fiber coating 6 formed after the optical fiber is coated is 220 μm, and the material is ultraviolet light-cured polyacrylic resin;

[0080] The diameter of the optical fiber cladding outside the laser fiber core is 200 μm, the outer diameter of the optical fiber coating 6 formed after the fiber coating is 220 μm, and the material is ultraviolet-cured polyacrylic resin;

[0081] After the illumination fiber and the laser fiber are respectively tightly sleeved for the second time, the outer diameter of the fiber after tight sleeving is 550 μm, the material of the tight sleeving layer obtained is a thermoplastic high molecular material, the high molecular material is polyurethane, the reinforcing member is a flexible fiber-reinforced plastic rod, preferably FFRP or GFRP, and the diameter is 0.10 mm; the three fibers are twisted on the reinforcing member in the form of unidirectional helical twisting to form a cable core, the twisting pitch of each fiber unit is 100 mm; the material of the optical cable sheath 1 is polytetrafluoroethylene, the thickness of the optical cable sheath 1 is 0.2 mm, and the outer diameter of the optical cable is 1.7 mm.

[0082] Example 3:

[0083] Referring to Figure 3 As shown in the figure, a double-core medical optical fiber cable is provided, which integrates the cores of two fibers with different purposes in the same optical fiber cladding 5, reduces the outer diameter of the optical cable, and has the functions of image transmission and illumination. The outer diameter of the optical fiber cladding 5 is 800 μm; the diameter of the image transmission fiber core is 500 μm; the diameter of the illumination fiber core is 100 μm; the outer diameter of the optical fiber coating 6 obtained after fiber coating is 900 μm, and the material of the optical fiber coating 6 is ultraviolet-cured silicone resin; then a layer of high molecular material is extruded to form an optical cable sheath 1, the material of the optical cable sheath 1 is polyether ether ketone, the thickness of the optical cable sheath 1 is 0.2 mm, and the outer diameter of the optical cable is 1.4 mm.

[0084] Example 4:

[0085] Referring to Figure 4 As shown in the figure, a double-fiber medical optical fiber cable is provided, which arranges two fibers with different purposes in parallel in an optical cable sheath 1, reduces the outer diameter of the optical cable, and has good flexibility.

[0086] The diameter of the optical fiber cladding outside the laser fiber core is 200 μm, the outer diameter of the optical fiber coating 6 formed after the fiber coating is 220 μm, and the material is ultraviolet-cured polyacrylic resin;

[0087] The diameter of the optical fiber cladding outside the laser fiber core is 200 μm, the outer diameter of the optical fiber coating 6 formed after the fiber coating is 220 μm, and the material is ultraviolet-cured polyacrylic resin;

[0088] The lighting fiber core is then subjected to a second tight-buffering process. The outer diameter of the fiber after tight-buffering is 550 μm. The material of the resulting tight-buffering layer is a thermoplastic polymer material, specifically polyurethane. The two optical fibers are placed in parallel to form the cable core. To reduce the outer diameter of the optical cable, the shape of the optical cable is preferably set to elliptical. The material of the optical cable sheath 1 is polytetrafluoroethylene, the thickness of the optical cable sheath 1 is 0.2 mm, the outer diameter of the optical cable in the major axis direction is 1.7 mm, and the outer diameter in the minor axis direction is 1.0 mm.

[0089] Example 5:

[0090] See Figure 5 As shown, a dual-core medical optical fiber cable integrates the cores of two types of optical fibers within the same optical fiber cladding 5, reducing the cable's outer diameter while simultaneously providing image transmission and laser energy transmission capabilities. The outer diameter of the optical fiber cladding 5 is 1200 μm; the diameter of the image transmission fiber core is 500 μm; the diameter of the laser fiber core is 200 μm; the outer diameter of the optical fiber coating 6, obtained after coating the optical fiber, is 1400 μm, and the material of the optical fiber coating 6 is UV-cured silicone resin; subsequently, a layer of polymer material is extruded to form the optical cable sheath 1, the material of which is polyetheretherketone (PEEK), the thickness of which is 0.2 mm, and the outer diameter of the optical cable is 2.0 mm.

[0091] Example 6:

[0092] See Figure 6 As shown, a dual-fiber medical optical fiber cable is provided. The cable arranges two types of optical fiber units for different purposes in parallel within a single cable sheath 1, reducing the outer diameter of the cable while simultaneously providing image transmission and laser energy transmission functions.

[0093] The diameter of the fiber cladding outside the image transmission fiber is 500 μm, and the outer diameter of the fiber coating 6 formed after fiber coating is 550 μm. The material is ultraviolet light-cured polyacrylic acid resin.

[0094] The diameter of the laser fiber is 175 μm, and the outer diameter of the fiber coating 6 formed after fiber coating is 220 μm. The material is ultraviolet light-cured polyacrylic resin.

[0095] The laser fiber is then subjected to a second tight-buffering process. The outer diameter of the fiber after tight-buffering is 550 μm. The material of the resulting tight-buffering layer is a thermoplastic polymer material, specifically polyurethane. The two fibers are placed in parallel to form the cable core. To reduce the outer diameter of the optical cable, the shape of the optical cable is preferably set to elliptical. The material of the optical cable sheath 1 is polyetheretherketone (PEEK), the thickness of the optical cable sheath 1 is 0.2 mm, the outer diameter of the optical cable along the major axis is 1.7 mm, and the outer diameter along the minor axis is 1.0 mm.

[0096] Example 7:

[0097] Referring to Figure 7 As shown in the figure, a large-core-count image transmission optical fiber is formed by using a multi-component glass to form a large-core-count optical fiber, each sub-core 20 is densely arranged to form a regular hexagonal structure, each sub-core 20 is densely arranged to have a diameter of 1-2 microns, the core count can reach more than 10,000, the total core diameter reaches 500 microns, and the numerical aperture of the image transmission core can reach more than 0.25.

[0098] It should be noted that the above multi-component glass uses existing materials, mainly including silica, soda ash, limestone, quartz, etc., which are not specifically described here.

[0099] Example 8:

[0100] Referring to Figure 8 As shown in the figure, a large-core-count image transmission optical fiber is formed by densely arranging the image transmission optical fiber cores into a navel-shaped photonic crystal fiber, each photonic crystal fiber 21 is densely arranged to form a regular hexagonal structure, and the numerical aperture of the image transmission core can reach more than 0.5 or even 0.6.

[0101] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be a fixed connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. 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.

[0102] It should be noted that in the present application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the sentence "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0103] The foregoing detailed description of the application has been presented for purposes of illustration and description. Various modifications and changes can be made to these embodiments without departing from the spirit and scope of the application. It is intended that the scope of the application should not be limited by the particular representative embodiments described above. Rather, the general scope of the application is to be determined by the appended claims and their equivalents.

Claims

1. A medical fiber optic cable characterized by, It comprises: a cable jacket (1); an optical fiber structure, which is located in the cable jacket (1), and comprises an image transmission fiber and a plurality of functional fibers, each of the image transmission fiber and the functional fiber comprises a fiber cladding (5) and a fiber coating (6) arranged outside the fiber cladding (5), the image transmission fiber further comprises an image transmission core (2) arranged in the fiber cladding (5), and the functional fiber further comprises a functional core arranged in the fiber cladding (5).

2. The medical fiber optic cable according to claim 1, wherein: the image transmission core (2) and the functional core are located in the same fiber cladding (5); or the image transmission core (2) and each of the functional cores are located in different fiber claddings (5) respectively.

3. The medical fiber optic cable according to claim 2, wherein: when the image transmission core (2) and each of the functional cores are located in different fiber claddings (5) respectively, the optical fiber structure further comprises a bendable reinforcing member (7), and the image transmission fiber and the functional fibers are twisted on the reinforcing member (7).

4. The medical fiber optic cable according to claim 3, wherein: the reinforcing member (7) is a flexible fiber reinforced plastic rod.

5. The medical fiber optic cable according to claim 1, wherein: at least one of the functional cores is an illumination core (3); and / or at least one of the functional cores is a laser core (4).

6. The medical fiber optic cable according to claim 5, wherein: the illumination core (3) is made of germanium-doped quartz glass; and / or the numerical aperture NA of the illumination core (3) is 0.18-0.22; and / or the diameter of the illumination core (3) is 50-100 μm; and / or the exit end of the illumination core (3) is provided with a diffusion lens for diffusing light; and / or when the image transmission core (2) and each of the functional cores are located in different fiber claddings (5) respectively, the functional fiber containing the illumination core (3) is an illumination fiber, the diameter of the fiber cladding (5) of the illumination fiber is 125 μm, 165 μm, 180 μm or 200 μm, and the diameter of the fiber coating (6) is 220-230 μm.

7. The medical fiber optic cable according to claim 5, wherein: the laser core (4) is made of pure quartz glass; and / or the numerical aperture NA of the laser core (4) is 0.19-0.22; and / or the diameter of the laser core (4) is 100-200 μm; and / or the exit end of the laser core (4) is provided with a collimating structure for focusing laser; and / or when the image transmission core (2) and each of the functional cores are located in different fiber claddings (5) respectively, the functional fiber containing the laser core (4) is a laser fiber, the diameter of the fiber cladding (5) of the laser fiber is 200 μm, and the diameter of the fiber coating (6) is 220-230 μm.

8. The medical fiber optic cable according to claim 1, wherein: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The image transmission fiber core (2) is a large core number fiber core containing a number of sub-fiber cores (20) exceeding a first design value, the first design value being no less than 10,000; and / or, the numerical aperture NA of the image transmission fiber core (2) is no less than 0.25; and / or, the diameter of the sub-fiber core (20) is 1-2 μm; and / or, the exit end of the image transmission fiber core (2) is provided with a spherical lens for expanding the range of incident light, and the entrance end is provided with a photosensitive element; Or, the image transmission fiber core (2) is a large core diameter fiber core with a diameter of 200-500 μm; and / or, the numerical aperture NA of the image transmission fiber core (2) is no less than 0.22; and / or, the exit end of the image transmission fiber core (2) is provided with a spherical lens for expanding the range of incident light, and the entrance end is provided with a photosensitive element; Or, the image transmission fiber core (2) is a large core number fiber core containing a number of photonic crystal fibers (21) exceeding a second design value, the second design value being several hundreds; and / or, the numerical aperture NA of the image transmission fiber core (2) is no less than 0.30; and / or, the exit end of the image transmission fiber core (2) is provided with a spherical lens for expanding the range of incident light, and the entrance end is provided with a photosensitive element.

9. The medical fiber optical cable according to claim 1, characterized in that: The image transmission fiber core (2) and each of the functional fiber cores are respectively located in different fiber claddings (5), at least one of the functional fiber cores is an illumination fiber core (3), and at least one of the functional fiber cores is a laser fiber core (4); the diameter of the fiber cladding (5) of the image transmission fiber is 500 μm, and the diameter of the fiber coating (6) is 550 μm; And / or, the cable sheath (1) is made of polytetrafluoroethylene, polyether ether ketone, ETFE, TPU, PP, PE or PBT; And / or, the fiber coating (6) is made of polyacrylic resin, polyimide or silicone resin; And / or, the diameter of the medical fiber optical cable is 1000-4000 μm.

10. A medical device, characterized by The medical fiber optical cable according to any one of claims 1-9. The medical fiber optical cable according to any one of claims 1-9.

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