External optical fiber for optical fiber delivery in ophthalmic surgical devices
By positioning the optical fiber outside the aspiration path and using a sleeve or distal cap to limit the channel, the problem of optical fiber blockage was solved, enabling more efficient tissue and vitreous removal and enhancing the patency of the aspiration path.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2026-04-07
AI Technical Summary
In existing technologies, optical fibers housed within the suction tube of a laser probe are prone to clogging, making the laser probe less effective at removing tissue and vitreous humor.
Position the optical fiber outside the aspiration channel and define the channel with a sleeve or distal cap so that the optical fiber is partially placed inside the channel, so that the laser beam can be effectively delivered to the surgical site and tissue and vitreous body can be effectively removed through the aspiration channel.
It reduces the risk of clogging, improves the efficiency of the laser probe in removing tissue and vitreous humor, and increases the cross-sectional area of the aspiration pathway, allowing for the effective aspiration of larger tissue and vitreous fragments.
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Figure CN121816166A_ABST
Abstract
Description
Background Technology
[0001] Lasers are used in a wide variety of medical procedures to perform surgery and / or treat a patient's anatomy. For example, in laser phacoemulsification, a laser probe conducts a laser beam to emulsify and ablate the lens to remove cataracts. The laser beam is typically transmitted from the surgical laser system via optical fiber, which terminates proximally in a port adapter connected to the surgical laser system and distally in a laser probe manipulated by the surgeon.
[0002] In some laser probes, the optical fiber is housed within a suction tube. This placement can cause clogging problems because the fiber occupies part of the suction pathway. The fiber can also block the suction pathway, as it prevents larger tissue and vitreous fragments from being extracted from the tube. Therefore, the laser probe may become less effective at removing tissue and vitreous debris generated during medical procedures. Summary of the Invention
[0003] This disclosure generally pertains to optical fibers, and more specifically to components used for energy delivery in surgical systems.
[0004] Some embodiments of this disclosure provide an optical fiber system. The optical fiber system includes: a suction tube; an optical fiber located outside the suction tube; and a sleeve surrounding the optical fiber and the suction tube. The sleeve includes a distal portion defining a channel. The channel extends between the suction tube and a distal opening of the sleeve. The channel and the suction tube define a suction path. The optical fiber is partially disposed within the channel.
[0005] Some embodiments of this disclosure provide an optical fiber system. The optical fiber system includes: a suction tube; an optical fiber located outside the suction tube; and a distal cap. The distal cap includes a channel extending between the suction tube and a distal opening. The channel and the suction tube define a suction path. The optical fiber is partially disposed within the channel.
[0006] Some embodiments of this disclosure provide an optical fiber system. The optical fiber system includes: a suction tube; an optical fiber located outside the suction tube; and a distal cap. The distal cap includes: a hypotube disposed at the distal end of the suction tube; and a channel. The hypotube includes a hypotube opening. The channel extends between the suction tube and the distal opening. The channel and the suction tube define a suction path. The hypotube is disposed within the channel.
[0007] The following description and accompanying drawings illustrate certain illustrative features of one or more embodiments, including those described above. Attached Figure Description
[0008] To gain a detailed understanding of how the features described above are implemented, the disclosure can be described in more detail with reference to embodiments (some of which are shown in the accompanying drawings). However, it should be noted that the drawings illustrate only exemplary embodiments and should not be construed as limiting the scope of the disclosure, and may allow for other equally effective embodiments.
[0009] Figure 1 A side view of a system for generating a laser beam for delivery to a surgical target, according to certain embodiments of this disclosure, is shown.
[0010] Figure 2A A perspective view of a probe tip with a sleeve, according to certain embodiments of the present disclosure, is shown.
[0011] Figure 2B Certain embodiments according to this disclosure are shown. Figure 2A A cross-sectional side view of the distal portion of the probe.
[0012] Figure 2C Certain embodiments according to this disclosure are shown. Figure 2A A cross-sectional side view of the distal portion of the casing.
[0013] Figure 2D Certain embodiments according to this disclosure are shown. Figure 2A A three-dimensional view of the distal portion of the sleeve.
[0014] Figure 3A A perspective view of a probe tip with a distal cap, according to certain embodiments of the present disclosure, is shown.
[0015] Figure 3B Certain embodiments according to this disclosure are shown. Figure 3A A side view of the cross-section of the probe tip.
[0016] Figure 3C Certain embodiments according to this disclosure are shown. Figure 3A A three-dimensional view of the cap on the far side.
[0017] Figure 3D Certain embodiments according to this disclosure are shown. Figure 3A A cross-sectional side view of the distal cap.
[0018] Figure 3E This disclosure illustrates certain embodiments of a device without having Figure 3A A cross-sectional side view of the fiber optic cable and suction tube in the case of the distal cap.
[0019] Figure 3F This disclosure illustrates certain embodiments of a device without having Figure 3A In the case of a distal cap Figure 3E A 3D diagram of the optical fiber and suction tube.
[0020] Figure 4A Certain embodiments according to this disclosure are shown. Figure 3A The distal cap includes a cross-sectional side view of the submersible tube.
[0021] Figure 4B This disclosure illustrates certain embodiments of a device without having Figure 3A In the case of a distal cap Figure 4A A cross-sectional side view of the optical fiber and the hypotube.
[0022] Figure 4C This disclosure illustrates certain embodiments of a device without having Figure 3A In the case of a distal cap Figure 4A A 3D diagram of optical fiber and sodium hypochlorite tube.
[0023] For ease of understanding, the same reference numerals are used where possible to refer to the same elements common in the figures. It is contemplated that elements and features of one embodiment can be advantageously combined in other embodiments without further description. Detailed Implementation
[0024] In the following description, details are illustrated by way of example to aid understanding of the disclosed subject matter. However, it will be clear to those skilled in the art that the disclosed embodiments are exemplary and not an exhaustive list of all possible embodiments. Therefore, it should be understood that references to the described examples are not intended to limit the scope of this disclosure. Those skilled in the art to which this disclosure pertains will generally be fully capable of conceiving any changes and further modifications to the described apparatus, instruments, and methods, as well as any further applications of the principles of this disclosure. In particular, it will be fully contemplated that features, components, and / or steps described for one embodiment can be combined with features, components, and / or steps described for other embodiments of this disclosure.
[0025] It should be noted that, as described herein, the distal end, distal segment, or distal portion of a component refers to the end, segment, or portion of the component that is closer to the patient's body during use. On the other hand, the proximal end, proximal segment, or proximal portion of a component refers to the end, segment, or portion that is farther from the patient's body and closer to, for example, a surgical laser system.
[0026] As used herein, the term "about" can refer to a variation of + / - 10% from the nominal value. It should be understood that any value provided herein may include such variation.
[0027] The specific embodiments disclosed herein relate generally to surgical systems, and more specifically to components within surgical systems used for energy delivery.
[0028] During surgery and / or treatment of a patient's anatomy, various types of optical fibers can possess transmission characteristics that allow the fiber to efficiently and accurately guide the laser beam from the laser source to the surgical site. However, as discussed, housing the optical fiber within the aspiration cannula of a laser probe can cause clogging problems because the fiber occupies part of the aspiration pathway. The fiber may also obstruct the aspiration pathway because it does not allow larger tissue and vitreous fragments to be extracted from the aspiration cannula. Therefore, the laser probe may become less effective in removing tissue and vitreous debris generated during medical procedures.
[0029] Various aspects of this disclosure provide surgical systems for more effectively removing tissue and vitreous humor generated during medical procedures. The surgical system may include an optical fiber positioned outside the aspiration pathway of a laser probe used for emulsifying and aspirating lens material. By positioning the optical fiber outside the aspiration pathway, the risk of clogging can be significantly reduced. The optical fiber may be positioned adjacent to the aspiration cannula and partially within the channel at the distal end of the probe. In several different embodiments described herein, the channel may be defined by a cannula or distal cap that positions the optical fiber to efficiently deliver the laser beam to the surgical site. The following will be combined with… Figure 1 , Figures 2A to 2D , Figures 3A to 3F as well as Figures 4A to 4C Such embodiments will be described in further detail.
[0030] Figure 1 An example surgical system 100 for performing laser-assisted ophthalmic procedures is shown. The surgical system 100 includes a laser system 102 having one or more laser sources for generating a laser beam 113. In one example, the wavelength of the laser beam 113 can be from about 1 µm (micrometer) to about 10 µm, such as about 3 µm, and can be suitable for phacoemulsification. A user (such as a surgeon) can switch the laser between an on and off position using a switch, foot pedal, or other device on probe 108.
[0031] Surgical system 100 includes a connector (e.g., port adapter 114), an optical fiber 110, an optical fiber cable 111, and a probe 108. The optical fiber 110 may be at least partially housed within the optical fiber cable 111. The distal end of the optical fiber cable 111 is coupled to the probe 108, and the proximal end of the optical fiber cable 111 is coupled to the port adapter 114. In some cases, the optical fiber 110 may include more than one optical fiber. The transmissivity of the optical fiber 110 may be in the range of about 1 µm to about 10 µm, such as the wavelength range of about 3 µm.
[0032] Port adapter 114 is coupled to the optical port of laser system 102. Optical fiber 110 extends through port adapter 114 toward the optical port. Port adapter 114 may include a ferrule 115 with an opening into which the proximal end of optical fiber 110 and the proximal end of optical fiber cable 111 are inserted.
[0033] The probe 108 includes a probe body 112 and a probe tip 145. An optical fiber 110 extends through the probe body 112 to the distal end of the probe tip 145. The optical fiber 110 delivers a laser beam through the probe 108, which guides the laser beam to the surgical site (e.g., lens 121) of the patient's eye 125. The probe body 112 and the probe tip 145 house and protect the distal end of the optical fiber 110.
[0034] Figures 2A to 2D The probe tip 145 of the probe 108 with a sleeve 230 is shown. (Example) Figure 2A and Figure 2B As shown, the probe tip 145 of probe 108 includes a sleeve 230, a connecting member 234, an optical fiber housing 236, a portion of optical fiber 110, and a suction tube 238. Optical fiber 110 may be positioned adjacent to suction tube 238 such that optical fiber 110 is located outside suction tube 238. In some embodiments, suction tube 238 has a cross-sectional area defined by a diameter D1. In other embodiments, the cross-sectional area may be defined by other dimensions, such as height and width, depending on the shape of suction tube 238. By positioning optical fiber 110 outside suction tube 238, the cross-sectional area of suction tube 238 through which tissue and vitreous humor can be aspirated is increased. Advantageously, the increased cross-sectional area of suction tube 238 reduces the likelihood of blockage and further allows for the aspiration of larger tissues, vitreous fragments, etc.
[0035] In several different embodiments, the distal end 244 of the connector 234 includes a sleeve thread 240, and the proximal end 246 of the connector 234 includes a probe thread 242. The sleeve thread 240 is configured to secure the connector 234 to a connector thread 250 of the sleeve 230. The probe thread 242 is configured to secure the connector 234 to a connector thread of the probe 108. The proximal end 246 of the connector 234 is coupled to an optical fiber housing 236. The optical fiber housing 236 accommodates a portion of the optical fiber 110.
[0036] like Figure 2BAs shown, the sleeve 230 may include a proximal region 247, an intermediate region 248, and a distal region 249. The sleeve 230 may include a silicone material, an elastomer material, a plastic material, a metal material, or a ceramic material. A connecting thread 250 is located within the proximal region 247 near the proximal end 251 of the sleeve 230. In some embodiments, the connecting member 234 is secured to the sleeve 230 by screwing the connecting thread 250 onto the sleeve thread 240. In other embodiments, the connecting member 234 is secured to the sleeve 230 by a press fit. The intermediate region 248 connects the proximal region 247 to the distal region 249. In some embodiments, the cross-sectional area of the proximal region 247 (e.g., an area defined by a diameter) is larger than the cross-sectional area of the distal region 249 (e.g., an area defined by a diameter). The intermediate region 248 may be tapered, with sidewalls 237 tapering inward from the proximal region 257 to the distal region 249.
[0037] like Figure 2C and Figure 2D As shown, the distal region 249 includes a distal portion 231, a distal end 252, and an optical fiber guide 254. The distal portion 231 of the sleeve 230 includes a channel 256 and a distal opening 258. The optical fiber guide 254 may partially surround the optical fiber 110. For example, the optical fiber guide 254 may have an annular shape partially surrounding the optical fiber 110. The optical fiber guide 254 may terminate at the distal opening 258. In some embodiments, the distal end 260 of the optical fiber 110 is coplanar or substantially coplanar with the distal opening 258.
[0038] In some embodiments, the distal end 252 may include a distal flange 262 extending below the fiber guide 254 away from the distal opening 258. A distal surface 264 is formed by the distal flange 262. The distal surface 264 provides improved following and gripping force to prevent the probe tip 145 from drilling in. In some embodiments, the distal end 260 of the fiber 110 is coplanar or substantially coplanar with the distal surface 264.
[0039] Channel 256 extends between suction tube 238 and distal opening 258. Suction tube 238 and channel 256 define suction passage 239. Channel 256 may include transition region 266 and angled region 268. The angled region 268 of channel 256 is angled from suction tube 238 toward fiber guide 254 and terminates at distal opening 258. In embodiments including transition region 266, the angled region may be angled from transition region 266 toward fiber guide 254.
[0040] The transition region 266 may have a cross-sectional area defined by the diameter D2. In other embodiments, the cross-sectional area may be defined by other dimensions, such as height and width, depending on the shape of the transition region 266. The diameter D1 of the aspiration tube 238 may be larger than the diameter D2 of the transition region 266. Therefore, in such an embodiment, the cross-sectional area of the transition region 266 limits the size of tissue and vitreous fragments that can be aspirated through the aspiration passage 239.
[0041] The angled region 268 may have a cross-sectional area defined by a diameter D3. In other embodiments, the cross-sectional area may be defined by other dimensions, such as height and width, depending on the shape of the angled region 268. The diameter D2 of the transition region 266 may be greater than or approximately equal to the diameter D2 of the angled region 268. Therefore, the cross-sectional area of the angled region 268 limits the size of tissue and vitreous fragments aspirated through the aspiration passage 239. The cross-sectional area of the distal opening 258 is substantially equal to the cross-sectional area of the distal end of the angled region 268.
[0042] In several different embodiments, the fiber guide 254 can position the fiber 110 within a portion of the channel 256 at the distal opening 258, enabling the fiber 110 to deliver the laser beam more effectively to the surgical site. Therefore, tissue and vitreous humor ablated and / or dissolved by the fiber 110 can be more effectively aspirated through the aspiration passage 239. Accordingly, by positioning the fiber 110 closer to the aspiration passage 239, rather than placing it within the aspiration tube 238, the likelihood of blockage is reduced.
[0043] Furthermore, in several different embodiments, the fiber guide 254 can position the fiber within a portion of the channel 256 to control the size of tissue and vitreous humor that can be aspirated through the cross-sectional area of the distal opening 258. Positioning the fiber within a portion of the channel 256 reduces the cross-sectional area of the distal opening 258. Therefore, the cross-sectional area of the distal opening 258 limits the size of tissue and vitreous humor fragments aspirated through the aspiration passage 239. Consequently, the tissue and vitreous humor aspirated through the aspiration passage are smaller than the cross-sectional areas of the distal opening 258, the angled region 268, and the transition region 266, thereby further reducing the likelihood of large tissue and vitreous humor fragments causing blockage within the aspiration passage 239.
[0044] The cannula 230 may also include one or more fluid openings 270. The fluid openings 270 are configured to allow replacement fluid (such as silicone oil or saline) to be delivered into the patient's eye during tissue and vitreous removal. The replacement fluid prevents loss of intraocular pressure (IOP) during the procedure.
[0045] like Figure 2CAs shown, the cannula 230 may further include an inner flange 280 and an anchor 292. The suction tube 238 may include an anchor opening 290. The anchor 292 may be configured to be positioned within the anchor opening 290. The inner flange 280 abuts against the distal end 294 of the suction tube 238. Thus, the anchor 292 and the inner flange 280 position the suction tube 238 within the cannula 230 to allow the suction tube to effectively aspirate tissue and vitreous body.
[0046] Figures 3A to 3F The probe tip 145 of the probe 108 with a distal cap 330 is shown. (Example) Figure 3A As shown, the probe tip 145 of probe 108 includes a distal cap 330, a connecting member 234, a portion of optical fiber 110, and a suction tube 238. The suction tube 238 is positioned adjacent to the optical fiber 110 such that the optical fiber 110 is located outside the suction tube 238. In some embodiments, the suction tube 238 has a cross-sectional area defined by a diameter D1. In other embodiments, the cross-sectional area may be defined by other dimensions (e.g., height and width), depending on the shape of the suction tube 238. The location of the optical fiber 110 outside the suction tube 238 increases the cross-sectional area of the suction tube 238 through which tissue and vitreous humor can be aspirated. This increased cross-sectional area of the suction tube 238 reduces the likelihood of blockage while also allowing the aspiration of larger tissue and vitreous fragments.
[0047] like Figure 3B As shown, the proximal end 246 of the connecting member 234 may include a probe thread 242. The probe thread 242 is configured to secure the connecting member 234 to the connecting member thread of the probe 108. The proximal end 246 of the connecting member 234 is coupled to the fiber optic housing 236. The fiber optic housing 236 accommodates a portion of the optical fiber 110.
[0048] like Figure 3D As shown, the distal cap 330 includes a connecting portion 366 and an angled portion 368. The distal cap 330 may comprise a metallic material, silicone material, elastomer material, plastic material, crystal (e.g., sapphire), or ceramic material. The connecting portion 366 can be secured to the suction tube 238 by screwing, welding, or press-fitting. The suction tube 238 has an outer diameter D4. The connecting portion 366 has an inner diameter D5, which may be the same as or substantially the same as the outer diameter D4 of the suction tube 238. In some embodiments, the suction tube 238 and the distal cap 330 may be a single integral unit.
[0049] The distal cap 330 also includes a distal end 352, an optical fiber port 354, a channel 356, and a distal opening 358. The optical fiber port 354 may partially surround the optical fiber 110. For example, the optical fiber port 354 may partially annularly surround the optical fiber 110. The optical fiber port 354 terminates at the distal opening 358. In several different embodiments, the optical fiber guide 254 may position the optical fiber 110 within a portion of the channel 256 at the distal opening 258 to allow the optical fiber 110 to deliver a laser beam to the surgical site. In some embodiments, the distal end 260 of the optical fiber 110 is coplanar or substantially coplanar with the distal opening 358.
[0050] like Figure 3C As shown, the distal end 352 may include a distal flange 362 extending below the fiber optic port 354 away from the distal opening 358. A distal surface 364 is formed by the distal flange 362. The distal surface 364 provides improved following and gripping force to prevent the probe tip 145 from penetrating. In some embodiments, the distal end 360 of the fiber 110 is coplanar or substantially coplanar with the distal surface 364.
[0051] Channel 356 extends between suction tube 238 and distal opening 358. Suction tube 238 and channel 356 define suction passage 339. Channel 356 may be defined by an angled portion 368. Within the angled portion 368, channel 356 is angled away from suction tube 238 toward fiber optic port 354 and terminates at distal opening 358.
[0052] The cross-sectional area of the angled portion 368 is defined by the diameter D6. In other embodiments, the cross-sectional area may be defined by other dimensions, such as height and width, depending on the shape of the angled portion 368. The inner diameter D1 of the suction tube 238 may be larger than the diameter D6 of the angled portion 368. The cross-sectional area of the distal opening 358 may be equal to the cross-sectional area of the distal end of the angled portion 368. Therefore, in such an embodiment, the cross-sectional area of the angled portion 368 limits the size of tissue and vitreous fragments aspirated through the suction passage 339.
[0053] In several different embodiments, fiber optic port 354 can position fiber optic cable 110 within a portion of channel 356 at distal opening 358, enabling fiber optic cable 110 to deliver the laser beam more effectively to the surgical site. Therefore, tissue and vitreous humor ablated and / or dissolved by fiber optic cable 110 can be more effectively aspirated through aspiration passage 239. Accordingly, by positioning fiber optic cable 110 closer to aspiration passage 239 rather than within aspiration tube 238, the likelihood of blockage is reduced.
[0054] Furthermore, in several different embodiments, the fiber optic port 354 can position the fiber optic cable 110 within a portion of the channel 356 to control the size of tissue and vitreous humor that can be aspirated through the cross-sectional area of the distal opening 358. Positioning the fiber optic cable 110 within a portion of the channel 356 reduces the cross-sectional area of the distal opening 358. Therefore, the cross-sectional area of the distal opening 358 limits the size of tissue and vitreous humor fragments aspirated through the aspiration passage 339. Consequently, the tissue and vitreous humor aspirated through the aspiration passage are smaller than the cross-sectional area of the distal opening 358, thereby further reducing the likelihood of large tissue and vitreous humor fragments causing blockage within the aspiration passage 339.
[0055] The distal cap 330 may also include an inner flange 380 and an anchor 392. The aspiration tube 238 may include an anchor opening 290. The anchor 392 may be configured to be disposed within the anchor opening 290. The inner flange 380 abuts against the distal end 294 of the aspiration tube 238. The anchor 392 and the inner flange 380 position the aspiration tube 238 within the distal cap 330 to allow the aspiration tube to effectively aspirate tissue and vitreous body.
[0056] Figures 4A to 4C A cross-sectional side view of the distal cap 330 with a distiller's tube 485 is shown. The distiller's tube 485 can be positioned at the distal end 294 of the suction tube 238 and extends toward the distal opening 358. The distiller's tube 485 has a sidewall 486 that defines a distiller's tube passage 487. The distiller's tube 485 is positioned within the passage 356 of the distal cap 330. The distiller's tube 485 has an outer diameter D7. The outer diameter D7 of the distiller's tube 485 may be smaller than the diameter D6 of the angled portion 368 of the distal cap 330.
[0057] The sidewall 486 of the sodium hypochlorite tube 485 can be a tapered sidewall, the cross-sectional area of which is defined by the diameter D8, such as... Figure 4B As shown. In other embodiments, the cross-sectional area may be defined by other dimensions, such as height and width, depending on the shape of the submersible tube 485. The diameter D8 decreases as the submersible tube 485 approaches the distal opening 358.
[0058] In several different embodiments, the hypotube 485 may be angled toward the fiber optic port 354, such that the fiber optic port 354 can position the fiber optic cable 110 within the hypotube channel 487 and the hypotube opening 488, enabling the fiber optic cable 110 to deliver the laser beam more efficiently to the surgical site. In some embodiments, the fiber optic cable 110 occupies a portion of the diameter D8 (e.g., cross-sectional area) of the hypotube opening 488, thereby reducing the cross-sectional area of the hypotube opening 488. The sidewall 486 of the hypotube is configured to have a fiber optic opening 489 to allow the fiber optic cable 110 to be placed within the hypotube opening 488, such as... Figure 4CAs shown. Therefore, tissue and vitreous humor ablated and / or dissolved by optical fiber 110 can be more effectively aspirated through aspiration passage 339. Accordingly, by positioning optical fiber 110 close to aspiration passage 339 rather than placing it inside aspiration tube 338, the possibility of blockage is reduced.
[0059] In another embodiment, the distal cap disclosed above can be formed from two or more components, such as a distal cap and a sleeve. For example, the size of the sleeve can be designed to accommodate... Figures 4A to 4C The tube is a hypodermic tube. In another example embodiment, the distal cap may form the bottom portion of the distal cap 330, while the cannula may form the top portion of the distal cap. In other additional embodiments, a separate tool may be used to provide irrigation for the patient's eye.
[0060] In summary, embodiments of this disclosure provide a system in which an optical fiber is positioned outside a suction cannula. A cannula or distal cap with a channel forms a suction path with the suction cannula. The optical fiber is partially positioned in the distal opening of the cannula or distal cap to guide a laser beam from a laser source to a desired location on the patient's body, such as the lens of the patient's eye. The optical fiber ablates or dissolves tissue and vitreous humor, allowing the tissue and vitreous humor to be effectively aspirated from the patient's eye. Positioning the optical fiber outside the suction path reduces the likelihood of suction cannula blockage.
[0061] The subject matter disclosed above should be considered illustrative rather than restrictive, and the appended claims are intended to cover all such modifications, enhancements, and other embodiments falling within the true spirit and scope of this disclosure. Therefore, for the maximum permissible extent permitted by law, the scope of this disclosure shall be determined by the broadest possible interpretation of the appended claims and their equivalents, and should not be limited to or restricted by the foregoing detailed description.
Claims
1. An optical fiber system, comprising: Suction straw; An optical fiber, located outside the suction tube; as well as A sleeve surrounding the optical fiber and the suction tube, the sleeve comprising: The distal portion defines a channel extending between the suction tube and the distal opening of the sleeve, wherein the channel and the suction tube define a suction path, and the optical fiber is partially disposed within the channel.
2. The optical fiber system as described in claim 1, wherein, The channel is angled toward the fiber optic guide and terminates at the distal opening.
3. The optical fiber system as described in claim 2, wherein, The fiber guide partially surrounds the fiber and terminates at the distal opening.
4. The optical fiber system as described in claim 3, wherein, The distal portion of the sleeve includes a flange that extends away from the optical fiber guide.
5. The optical fiber system as described in claim 4, wherein, The flange forms the distal surface.
6. An optical fiber system, comprising: Suction straw; An optical fiber, located outside the suction tube; as well as Distal cap, the distal cap comprising: A channel extending between the suction tube and the distal opening, the channel and the suction tube defining a suction path, the optical fiber being partially disposed within the channel.
7. The optical fiber system as described in claim 6, wherein, The suction passage is further defined by a thiopancreatography (TH) tube located at the distal end of the suction tube.
8. The optical fiber system as described in claim 6, wherein, The fiber optic port surrounds the distal portion of the fiber and terminates at the distal opening of the distal cap.
9. The optical fiber system as described in claim 8, wherein, The channel is angled toward the fiber optic port and terminates at the distal opening.
10. The optical fiber system as claimed in claim 9, wherein, The distal portion of the distal cap includes a flange that extends away from the fiber optic port.
11. An optical fiber system, comprising: Suction straw; An optical fiber, located outside the suction tube; as well as Distal cap, the distal cap comprising: The sodium thiosulfate tube is located at the distal end of the suction tube and has a sodium thiosulfate tube opening. as well as A channel extending between the suction tube and the distal opening, the channel and the suction tube defining a suction passage, the thiopanthate tube being placed within the channel.
12. The optical fiber system as claimed in claim 11, wherein, The hysteresis tube and the channel are angled toward the fiber optic port and terminate at the distal opening.
13. The optical fiber system as claimed in claim 12, wherein, The fiber optic port surrounds the distal portion of the fiber and terminates at the distal opening of the distal cap.
14. The optical fiber system as claimed in claim 13, wherein, The distal portion of the distal cap includes a flange that extends away from the fiber optic port.
15. The optical fiber system as described in claim 14, wherein, The flange forms the distal surface.