Optical connectors for tissue detection systems

Abstract

This invention relates to an optical connector for a tissue detection system, comprising a first connector portion and a second connector portion, each connector portion having a body, a pair of pins, an input optical fiber extending through one pin to its adjacent end, and an output optical fiber extending through the other pin to its adjacent end. The pins of the first connector portion and / or the second connector portion are slidably disposed within the body, and such connector portions further include a biasing member that biases the pins toward the coupling ends of the connector portions. Proximity of the coupling ends of these connector portions releasably engages the first and second bodies with each other and causes the adjacent ends of the pin pair to contact, causing the slidable pins to move against their respective biases, thereby establishing optical coupling between the input optical fibers and between the output optical fibers under the bias of the biasing member.

Description

Technical Field

[0001] This disclosure relates to optical connectors, and more specifically to optical connectors for optical surgical systems such as tissue detection systems. Background Technology

[0002] Many surgical procedures are performed on or inside the body at surgical sites where tissues of interest are difficult to detect using only direct visualization techniques (e.g., using the human eye, lens-based endoscopes, surgical cameras, etc.) due to obstacles, darkness, minimal or no contrast between different tissues, or minimal or no obvious distinction between different tissues. Therefore, such surgeries can benefit from the use of enhanced visualization techniques, such as fluorescence.

[0003] Because some materials, including certain tissues, fluoresce when stimulated by electromagnetic radiation (e.g., light of non-visible wavelengths), fluorescence can be used to highlight tissues of interest, thereby facilitating their detection, which might otherwise be difficult or impossible to detect using only direct visualization techniques. One or more specific wavelengths of the emitted and detected electromagnetic radiation can be determined based on the one or more tissues of interest to be highlighted. Utility Model Content

[0004] As used herein, the term "far side" refers to the portion described that is further away from the operator, while the term "proximal side" refers to the portion described that is closer to the operator. As used herein, terms including "usually," "about," "generally," etc., are intended to cover variations up to and including ±10%, such as manufacturing tolerances, material tolerances, usage and environmental tolerances, measurement variations, design variations, and / or other variations. Furthermore, to a consistent degree, any or all of the aspects detailed herein may be used in conjunction with any or all of the other aspects detailed herein.

[0005] According to this disclosure, an optical connector for a tissue detection system is provided. The optical connector includes a first connector portion and a second connector portion. The first connector portion includes a first body having at least one first snap-fit ​​member, a first pin and a second pin slidably disposed within the first body, a first biasing member and a second biasing member biasing the first pin and the second pin toward coupling ends of the first connector portion, a first input optical fiber extending through the first pin to its adjacent end, and a first output optical fiber extending through the second pin to its adjacent end. The second connector portion includes a second body having at least one second snap-fit ​​member, a third pin and a fourth pin disposed within the second body, a second input optical fiber extending through the third pin to its adjacent end, and a second output optical fiber extending through the fourth pin to its adjacent end. The first connector portion and the second connector portion are configured such that the proximity of the coupling ends of the first connector portion and the coupling ends of the second connector portion causes the first snap-fit ​​component and the second snap-fit ​​component to engage with each other so that the first body and the second body are releasably engaged with each other, and causes the adjacent ends of the first pin and the second pin to contact the adjacent ends of the third pin and the fourth pin, respectively, so that the first pin and the second pin move against the corresponding bias of the first bias member and the second bias member, thereby establishing optical coupling between the first input fiber and the second input fiber and between the first output fiber and the second output fiber under the bias of the first bias member and the second bias member.

[0006] In one aspect of this disclosure, the third pin and the fourth pin are slidably disposed within the second body. The second connector portion further includes a third biasing member and a fourth biasing member that bias the third pin and the fourth pin toward the coupling end of the second connector portion. The proximity of the coupling ends of the first connector portion and the second connector portion causes the third pin and the fourth pin to move against the corresponding bias of the third biasing member and the fourth biasing member, thereby establishing optical coupling between the first input fiber and the second input fiber and between the first output fiber and the second output fiber under the bias of the first biasing member, the second biasing member, the third biasing member and the fourth biasing member.

[0007] In another aspect of this disclosure, the third and fourth pins are fixed relative to the second body.

[0008] In another aspect of this disclosure, the first pin and the second pin are disposed within a first lumen and a second lumen defined within the first body. In these aspects, the third pin and the fourth pin are respectively capable of being inserted into the first lumen and the second lumen.

[0009] In another aspect of this disclosure, each of the first lumen and the second lumen includes a sleeve disposed therein. The sleeve may be ceramic.

[0010] In another aspect of this disclosure, the first pin, the second pin, the third pin, and the fourth pin are ceramic.

[0011] In another aspect of this disclosure, at least one of the first snap-fit ​​components includes either an arm or a channel, the arm including an engaging finger at its free end, the channel defining an engaging recess. Alternatively, the configuration may be reversed. In either configuration, the arm is configured to slide through the channel to engage the engaging finger within the engaging recess, thereby releasably engaging the first body and the second body with each other.

[0012] In one aspect of this disclosure, the optical connector further includes a first cable and a second cable extending from a second body. In these aspects, a second input optical fiber extends through the first cable, and a second output optical fiber extends through the second cable.

[0013] In another aspect of this disclosure, the optical connector also includes a shared cable extending from the first body. In these aspects, the first input optical fiber and the first output optical fiber extend through the shared cable.

[0014] In another aspect of this disclosure, a first body defines a portion of the probe, and a first input optical fiber and a first output optical fiber extend through the probe.

[0015] In another aspect of this disclosure, a first plug and a second plug are respectively disposed at the ends of a first cable and a second cable. The first plug is configured to connect to an optical detector, and the second plug is configured to connect to an optical transmitter.

[0016] In another aspect of this disclosure, the optical connector also includes a use-limiting mechanism configured to prevent the first and second bodies from engaging with each other after a predetermined number of engagements and disengagements.

[0017] In another aspect of this disclosure, the use restriction mechanism includes an actuation post that, in the unlocked state of the use restriction mechanism, is capable of moving from a first position to a second position while the coupling ends of the first connector portion and the second connector portion are close to each other, to allow optical coupling between the first input optical fiber and the second input optical fiber, and between the first output optical fiber and the second output optical fiber.

[0018] In another aspect of this disclosure, when the limiting mechanism is locked, the actuation post is held in a first position to prevent optical coupling between the first input fiber and the second input fiber or between the first output fiber and the second output fiber. Attached Figure Description

[0019] The above and other aspects and features of this disclosure will become more apparent when considered in conjunction with the accompanying drawings, in which the same reference numerals identify similar or identical elements.

[0020] Figure 1 It is a perspective view of the tissue detection system according to this disclosure, illustrated in use in relation to the patient and operator, wherein the patient's internal area is magnified for reference;

[0021] Figure 2 yes Figure 1 A schematic diagram of the probe, control console, and connectors of the tissue detection system;

[0022] Figure 3 yes Figure 1 A perspective view of the probe, control console, and connectors of the tissue detection system;

[0023] Figure 4A and Figure 4B yes Figure 1 The connector of the tissue detection system is in Figure 3 The sections marked "4" are set as magnified perspective views in the connected and disconnected states, respectively;

[0024] Figure 5A and Figure 5B It is constructed according to this disclosure for use with Figure 1 Another connector used with the tissue detection system is shown in magnified perspective views in both the connected and disconnected states;

[0025] Figure 6A and Figure 6B These are longitudinal sectional views of the connector structure according to this disclosure, respectively arranged in the disconnected state and the connected state;

[0026] Figure 7 This is a longitudinal sectional view of another connector configuration according to the present disclosure in the disconnected state;

[0027] Figure 8 It is constructed to be with Figure 6A and Figure 6B A longitudinal sectional view of the connector body used together with the connector construction;

[0028] Figure 9 It is constructed to be with Figure 7 A longitudinal sectional view of another connector body used together with the connector construction;

[0029] Figure 10 This is a longitudinal sectional view of another connector configuration according to the present disclosure, including a limited-use mechanism and disposed in the initial disconnect configuration;

[0030] Figure 11 yes Figure 10 The connector configuration is shown in the longitudinal sectional view of the final connection configuration; and

[0031] Figure 12A and Figure 12Byes Figure 10 The connector structure is shown in longitudinal sectional views in the disconnected state, locked state, and partially connected and locked states. Detailed Implementation

[0032] This disclosure provides an optical connector for an optical surgical system and an optical surgical system including the optical connector. Although a tissue detection system for identifying tissue is described in detail below, aspects and features of this disclosure can also be used with any other suitable optical surgical system. For the purposes of this document, a tissue detection system is generally described, wherein well-known functions or structures are not described in detail to avoid unnecessarily obscuring this disclosure. Furthermore, those skilled in the art will understand that the systems and methods of this disclosure can be operated by one or more operators "O" ( Figure 1 The operation can be performed by one or more human clinicians and / or one or more surgical robots.

[0033] refer to Figure 1 The tissue detection system provided according to various aspects of this disclosure is shown generally as identified by reference numeral 10. The tissue detection system 10 can be used in surgical procedures to identify tissue (via positive or negative identification) and, if applicable, facilitate surgical procedures on and / or around the identified tissue. For example, the tissue detection system 10 can be used to identify parathyroid tissue, thyroid tissue, and / or other tissues in the neck region to facilitate the removal or treatment of such or surrounding tissues during surgery. However, although aspects and features of this disclosure are described below with respect to the identification of tissues (e.g., parathyroid tissue and / or thyroid tissue) in the neck region, the aspects and features of this disclosure are equally applicable to the identification of different tissues and / or tissues at different anatomical locations. That is, although different instruments may be required to access different tissues and / or different anatomical locations, and although different settings (e.g., different electromagnetic radiation wavelengths) may be required to identify different tissues, the aspects and features of this disclosure remain generally consistent regardless of the specific instrument and / or settings used.

[0034] The tissue detection system 10 typically includes a probe 100 and a console 170. In various aspects, the tissue detection system 10 also includes an external camera system 200, which may include a detector (e.g., an infrared (IR) camera) for capturing fluorescence from a fluorescent tissue of interest and / or a standard camera for capturing video images. The probe 100 can be positioned by an operator “O” relative to a patient “P” received on an operating table 160. More specifically, the probe 100 is manipulated to a position of contact or close proximity (e.g., within approximately 5 cm) and guided to the tissue of interest, such as the parathyroid tissue 300 of patient “P”. The probe 100 is operatively connected to the console 170. Figure 2One or more emitters 105, the one or more emitters being configured to direct electromagnetic radiation from probe 100 to tissue of interest to stimulate tissue of interest, such that any fluorescence generated by the stimulated tissue can be detected by console 170. Figure 2 One or more detectors 110 detect the camera, but it is also conceivable that one or more detectors may be incorporated into or operatively coupled to an external camera system 200 and / or provided separately.

[0035] In all aspects provided and as described above, the external camera system 200 is configured to detect fluorescence and / or acquire video images. That is, the external camera system 200 may include an infrared (IR) camera and / or a standard video camera. Compared to the probe 100, the external camera system 200 is positioned spaced apart from the surgical site, such that the external camera system 200 provides fluorescence detection and / or video imaging over a relatively large field of view. In all aspects, the combined use of the external camera system 200 and the probe 100 enables fluorescence detection by the external camera system 200 to identify potentially fluorescent tissues over a relatively large field of view, and enables the probe 100 to be used locally for fluorescence detection at the location of each potentially fluorescent tissue within its relatively focused field of view, for example, by positioning the probe 100 in contact with or very close to the surface of each potentially fluorescent tissue (e.g., within approximately 5 cm), so that it can be confirmed whether the potentially fluorescent tissue identified by the external camera system 200 is indeed fluorescent.

[0036] refer to Figures 1 to 3 The console 170 integrates the controller 140 and user interface 150 into a single unit; however, it is also conceivable that the controller 140 and user interface 150 may be physically connected or interconnected, or may be separate from each other. The user interface 150 includes a display 152 (…). Figure 3 ( ), used to display information obtained by using the tissue detection system 10, such as a bright image of fluorescent tissue and / or a video image of the tissue.

[0037] Controller 140 includes a processor for processing data, a memory that communicates with the processor to store data, and input / output units (I / O) for interfacing with other modules, units, and / or devices. The processor may include a central processing unit (CPU), a microcontroller unit (MCU), or any other suitable processor. The memory may include and store processor-executable code that, when executed by the processor, configures controller 140 to perform various operations, such as receiving information, commands, and / or data, processing information and data, and transferring or providing information / data to another device. To support the various functions of controller 140, the memory may store information and data such as instructions, software, values, images, and other data processed or referenced by the processor. For example, various types of random access memory (RAM) devices, read-only memory (ROM) devices, flash memory devices, and other suitable storage media may be used to implement the storage function of the memory. The I / O of controller 140 enables controller 140 to interface with other devices or device components using various types of wired or wireless interfaces (e.g., wireless transmitter / receiver (Tx / Rx)) compatible with typical data communication standards to realize controller 140 and other devices (e.g., user interface 150, display 152, etc.). Figure 3 Communication between devices such as Bluetooth, Bluetooth Low Energy, Zigbee, IEEE 802.11, Wireless Local Area Network (WLAN), Wireless Personal Area Network (WPAN), Wireless Wide Area Network (WWAN), WiMAX, IEEE 802.16 (Global Interoperability Microwave Access (WiMAX)), 3G / 4G / LTE cellular communication methods, NFC (Near Field Communication), and parallel interfaces. The I / O of controller 140 can also interface with other external interfaces, data storage sources, and / or visual or audio display devices to retrieve and transmit data and information that can be processed by the processor, stored in memory, and / or output to external devices. In various aspects, for example, outputs can be provided to various types of screen displays, speakers, or printing interfaces, such as, but not limited to, LEDs, liquid crystal display (LCD) monitors or screens, cathode ray tubes (CRTs), audio signal transducer devices and / or toners, liquid inkjet, solid ink, dye sublimation, inkless (e.g., thermal or UV) printing devices, etc.

[0038] User interface 150 and / or its display 152 may include, for example, any of the above-described output devices, graphical user interface (GUI), touchscreen GUI, keyboard, mouse, physical and / or numeric buttons, speaker, one or more LEDs, foot switch, manual switch, and / or any other suitable interface device, to enable input of information, for example, to control the operation of system 10, and / or output of information, for example, regarding the status and / or results of the operation of system 10. For example, user interface 150 may: include suitable input to activate probe 100, for example, to emit electromagnetic radiation; include suitable input (same or different from the above-described inputs) to enable activation of fluorescence detection, for example, via probe 100 and / or camera system 200; and / or provide perceptible output, such as audio, visual, or tactile output, indicating that a suitable fluorescence signal has been detected.

[0039] For details, please refer to the following: Figure 2 In various aspects, probe 100 may include one or more probe bodies 130, each probe body including one or more transmitter fibers 115 coupled to one or more transmitters 105 of console 170 and / or one or more detector fibers 120 coupled to one or more detectors 110 of console 170. An external camera system 200 may be used. Figure 1 This provides additional or alternative detection. Although each of the multiple components is considered in each aspect, the probe body 130, transmitter fiber 115, transmitter 105, detector fiber 120, and detector 110 are described in the singular below for ease of understanding. In each aspect, the probe 100, or at least its probe body 130, may be (permanently or removably) integrated into a surgical endoscope (not shown) or other surgical device.

[0040] Refer again Figures 1 to 3The emitter 105 is configured, for example via tuning and / or equipment selection, to emit electromagnetic radiation at a specific wavelength or within a specific wavelength range through the emitter fiber 115 and from the distal end portion 135 of the probe body 130 (from its axial, lateral, or any other suitable direction including adjustable orientation) to stimulate fluorescence in a specific tissue of interest. Regarding the identification of parathyroid tissue, for example, the emitter 105 (with or without using one or more optical elements 125 disposed at the output end of the emitter fiber 115 at the distal end portion 135 of the probe body 130) can be configured to emit electromagnetic radiation in the form of laser energy at a wavelength of approximately 785 nm to promote autofluorescence of the parathyroid tissue. At least the emitter 105 used for identifying parathyroid tissue can be a narrowband source such as a laser (e.g., a solid-state laser, laser diode, etc.) or other suitable sources whose electromagnetic radiation output wavelength is in or close to a narrow band of approximately 785 nm. Tuning, equipment selection, and / or filtering (using one or more optical elements 125, such as a bandpass (BP) filter disposed at the output of the transmitter fiber 115 at the distal end portion 135 of the probe body 130) can be used to facilitate the realization of this narrow band. Of course, different narrow (or wider) wavelength bands can be utilized to identify different tissues, and therefore different tuning, equipment selection, and / or optical elements 125 can be provided. Optical elements 125 may alternatively or additionally be disposed at different locations other than the distal end portion 135 of the probe body 130, and may include, for example, lenses, filters, mirrors, beam splitters, etc. A controller 140 can be used to control the transmission of electromagnetic radiation from the transmitter 105 to the tissue of interest (via the transmitter fiber 115), such as activating / deactivating, controlling wavelength, intensity, etc. A user interface 150 can be used to interact with and control the operation of the controller 140 (e.g., to set parameters and / or activate / deactivate), which in turn controls the transmitter 105.

[0041] Detector 110 is configured to detect fluorescence (as a result of electromagnetic radiation emitted to stimulate the tissue of interest) collected at the distal end portion 135 of probe body 130 and transmitted to detector 110 via detector fiber 120. Detector 110 is also configured to process the received fluorescence signal. Controller 140 can be used to control and / or facilitate the processing of the fluorescence signal detected at detector 110. Regarding the identification of parathyroid tissue, detector 110 can be configured to process the fluorescence signal, for parathyroid tissue undergoing autofluorescence, in the wavelength range of about 808 nm to about 1000 nm. Detector 110 may be an avalanche photodiode or other near-IR detector, a 2D array of IR detectors, or other suitable detector, and may be used in conjunction with one or more optical elements 127 (e.g., long-pass (high-pass) filters) to enable detection of radiation wavelengths above the source wavelength (e.g., above about 800 nm, for example, in the range of about 808 nm to about 1000 nm) with minimal interference from other unrelated wavelengths of electromagnetic radiation (e.g., from ambient light). Reducing the influence of ambient light can also be achieved by positioning the probe body 130 to be in contact with or very close to the tissue of interest during emission / detection (e.g., within approximately 5 cm), by modulating the emitter radiation, and / or by collecting fluorescence signals using phase-locked technology such as phase-locked detection or FFT (Fast Fourier Transform) techniques. Regarding one or more optical elements 127 (e.g., long-pass (LP) filters), in several respects, such optical elements 127 are disposed at the input end of the detector fiber 120 at the distal end portion 135 of the probe body 130. Alternatively or additionally, one or more optical elements 127 may be disposed at the input of the detector 110, for example, at the output end of the detection fiber 120, or between the output end of the detection fiber 120 and the input of the detector 110.

[0042] For example, the detected fluorescence signal of the tissue of interest obtained by detector 110 can be processed by comparing it with a threshold fluorescence signal to determine whether the detected fluorescence signal indicates the presence of a specific tissue, or can be processed in any other suitable manner. Details of systems and methods for using autofluorescence to distinguish parathyroid tissue from thyroid tissue or other tissues in the neck region are described in U.S. Patent 9,687,190 entitled “Intra-Operative Use of Fluorescence Spectroscopy and Applications of Same,” the entire contents of which are incorporated herein by reference. As disclosed therein, when thyroid and parathyroid tissues are exposed to radiation in a narrow wavelength range of approximately 785 nm, which is just outside the visible light range, both thyroid and parathyroid tissues autofluoresce in a wavelength range above approximately 800 nm (sometimes centered at approximately 822 nm) (the wavelength range above approximately 800 nm is also invisible). However, the fluorescence intensity of parathyroid tissue is significantly higher than that of thyroid material, thus enabling the distinction between the two tissues.

[0043] refer to Figure 3 , combined Figure 2 System 10 also includes a connector 400 configured to facilitate operative coupling of probe 100 to transmitter 105 and detector 110 of console 170. More specifically, connector 400 includes a console-side or proximal connector portion 410 and a probe-side or distal connector portion 460. Proximal connector portion 410 and distal connector portion 460 are releasably engaged with each other. Furthermore, proximal connector portion 410 is releasably engaged with console 170. Distal connector portion 460 may be integrally formed with probe 100 or releasably engaged with probe 100.

[0044] For further reference Figure 4A and Figure 4B The proximal connector portion 410 includes a proximal connector body 412, a proximal transmitter fiber 440, and a proximal detector fiber 450. The proximal transmitter fiber 440 extends from the proximal connector body 412 through a first proximal cable 442 to a transmitter plug 444, which is configured to be releasably connected to a transmitter port 172 of the console 170. The transmitter port 172 is connected to a transmitter 105 within the console 170. The proximal detector fiber 450 extends from the proximal connector body 412 through a second proximal cable 452 to a detector plug 454, which is configured to be releasably connected to a detector port 174 of the console 170. The detector port 174 is connected to a detector 110 within the console 170.

[0045] The distal connector portion 460 includes a distal connector body 462, a distal transmitter fiber 480, and a distal detector fiber 490. The distal transmitter fiber 480 and the distal detector fiber 490 extend from the distal connector body 462 through a common distal cable 482 to the probe body 130. Alternatively, the distal transmitter fiber 480 and the distal detector fiber 490 may extend from the distal connector body 462 through a separate distal cable to the probe body 130. As described above, the distal connector portion 460 may be integrally formed with the probe 100 such that the distal transmitter fiber 480 and the distal detector fiber 490 are integrally coupled to the probe 100, and more specifically, are integrally connected from the distal connector portion 460 to the transmitter fiber 115 and the detector fiber 120 of the probe 100 via the common distal cable 482 (or a separate distal cable) and the probe body 130, respectively. Alternatively, the distal transmitter fiber 480 and distal detector fiber 490 of the distal connector portion 460 of the connector 400 may include plugs or ports configured to be releasably connected to corresponding ports or plugs of the probe 100 to releasably connect the distal transmitter fiber 480 and distal detector fiber 490 to corresponding fibers 115, 120 of the probe 100.

[0046] Continue to refer to Figures 2 to 4B The proximal connector portion 410 and the distal connector portion 460 of connector 400, respectively, are releasably coupled to each other, thereby releasably optically coupling the proximal transmitter fiber 440 and the distal transmitter fiber 480 to each other, and also releasably optically coupling the proximal detector fiber 450 and the distal detector fiber 490 to each other. Proper coupling of the transmitter fibers 440 and 480 to each other, and proper coupling of the detector fibers 450 and 490 to each other, is important for achieving tissue detection. That is, insufficient proximity and / or misalignment between the transmitter fibers 440 and 480 may reduce the emitted laser towards the tissue, and therefore, the detectable fluorescence effect may be degraded. Similarly, insufficient proximity and / or misalignment between the detector fibers 450 and 490 may distort or reduce the fluorescence signal transmitted to the console 170, similarly inhibiting proper fluorescence detection. Therefore, ensuring proper coupling between the transmitter fibers 440 and 480 and the detector fibers 450 and 490 is important.

[0047] To provide proper coupling between transmitter fibers 440, 480 and detector fibers 450, 490, the proximal connector bodies 412 and 462 of the proximal connector portion 410 and the distal connector body 460 are configured to be releasably mechanically engaged with each other, thereby operably coupling both transmitter fibers 440, 480 and detector fibers 450, 490 to each other. In various respects, the releasable mechanical engagement may be provided by a pair of diametrically opposed releasable snap-fit ​​engagement structures 414. In various respects, the proximal connector body 412 and the distal connector body 462 are each formed of plastic and may each be, for example, integrally molded into a single component.

[0048] Each releasable snap-fit ​​engagement configuration 414 includes a longitudinal cantilever 416 extending from one of the connector bodies 412, 462 and a longitudinal channel 418 defined within the other connector body 412, 462. In each respect, both arms 416 may be disposed on one of the connector bodies 412, 462, and thus both channels 418 may be defined on the other connector body 412, 462. Alternatively, each connector body 412, 462 may include one arm 416 and one body 418.

[0049] Each arm 416 includes an engagement finger 417 disposed at its free end and extending laterally inward relative to the arm 416 and connector bodies 412, 462. Each channel 418 defines an engagement recess 419 recessed inward relative to the channel 418 and connector bodies 412, 462. Thus, when the connector bodies 412, 462 approach each other in a manner properly aligned (e.g., arm 416 aligned with channel 418), the arm 416 guided by the finger 417 enters the channel 418 and slides longitudinally through the channel until the finger 417 engages, for example, in a snap-fit ​​manner within the recess 419, thereby releasably engaging the connector bodies 412, 462 with each other.

[0050] Although the engagement described in detail above is sufficient to maintain proper connection between transmitter fibers 440, 480 and detector fibers 450, 490 and prevent accidental disconnection, connector bodies 412, 462 can be disengaged from each other without damaging any part of connector 400 by pulling connector bodies 412, 462 apart with sufficient force to remove finger 417 from recess 419.

[0051] The following is for reference. Figures 6A to 9Various configurations of the proximal connector body 412 and the distal connector body 462 are described to allow the transmitter fibers 440, 480 and the detector fibers 450, 490 to be operably coupled to each other during mechanical engagement of the proximal connector body 412 and the distal connector body 462 (e.g., as described above). Furthermore, although the mechanical engagement of the proximal connector body 412 and the distal connector body 462 described in detail herein is a releasable snap-fit ​​engagement, other suitable mechanical engagement configurations are also contemplated.

[0052] Go to Figure 5A and Figure 5B This illustrates what is provided in this disclosure and configured for use with system 10 ( Figures 1 to 3 Another connector 500 used together. Connector 500 is similar to and may include connector 400 ( Figures 3 to 4B Any features of connector 500 and connector 400 will not be described in detail below, and therefore, only connector 500 and connector 400 will be described in detail below. Figures 3 to 4B The differences between them are omitted for brevity, and similarities are briefly described or completely omitted for the sake of conciseness.

[0053] Connector 500 includes a console-side or proximal connector portion 510 and a probe-side or distal connector portion 560. The proximal connector portion 510 and the distal connector portion 560 are releasably engaged with each other, and the proximal connector portion 510 is releasably engaged with console 170, similar to the description above regarding connector 400 and console 170 (see...). Figure 3 More specifically, the proximal connector portion 510 includes a proximal connector body 512, a proximal transmitter fiber 540, and a proximal detector fiber 550. The proximal transmitter fiber 540 extends from the proximal connector body 512 through a first proximal cable 542 to a transmitter plug (not shown), and the proximal detector fiber 550 extends from the proximal connector body 512 through a second proximal cable 552 to a detector plug (not shown).

[0054] More specifically, the distal connector portion 560 includes a distal connector body 562, a distal transmitter fiber 580, and a distal detector fiber 590. The distal connector body 562 is integrally formed with or otherwise connected to the probe body 130. Therefore, instead of a distal cable connecting the distal connector portion of the connector to the probe body 130 (as described in detail above with respect to connector 400), the distal connector body 562 of connector 500 is directly connected to the probe body 130.

[0055] Go to Figure 6A and Figure 6BThis diagram illustrates a configuration 600 for a proximal connector body 412 and a distal connector body 462 to facilitate operative coupling of transmitter fibers 440, 480 and detector fibers 450, 490 to each other during mechanical engagement (e.g., as described above) of the proximal connector body 412 and the distal connector body 462. In configuration 600, the proximal connector body 412 includes a base 610 and an inner extension 612 extending distally from the base 610. The base 610 is configured to receive, for example, proximal transmitter fibers 440 and proximal detector fibers 450 from a first proximal cable 442 and a second proximal cable 452, respectively, at its proximal end portion. More specifically, the first proximal cable 442 and the second proximal cable 452 may extend into corresponding first cavities 622 and second cavities 624 of the base 610. The proximal cables 442, 452 are respectively fixedly engaged within cavities 622, 624 in various respects.

[0056] The base 610 also includes a first extension lumen 626 and a second extension lumen 628, which are respectively configured to communicate with the first cavity 622 and the second cavity 624, and extend distally through the base 610 and the inner extension 612, such that the extension lumens 626, 628 define distal ends of openings at the distal ends of the inner extension 612. In various aspects, a first guide sleeve 627 and a second guide sleeve 629 are respectively disposed within and extend along at least a portion of the first extension lumen 626 and the second extension lumen 628. In various aspects of providing the guide sleeves 627, 629, the guide sleeves 627, 629 may be formed of ceramic, but other materials are also contemplated. In various aspects, the diameters defined by the first extension lumen 626 and the second extension lumen 628 are smaller than the diameters of the first cavity 622 and the second cavity 624, but other configurations are also contemplated. Additionally or alternatively, a first neck 632 and a second neck 634 with a reduced diameter compared to the first cavity 622 and the second cavity 624, and a first extension lumen 626 and a second extension lumen 628 in each respect are respectively disposed between each pair of cavities 622, 624 and the pair of extension lumens 626, 628.

[0057] In configuration 600, the proximal connector body 412 also includes a first coupling assembly 636 and a second coupling assembly 638. Each coupling assembly 636, 638 includes coupling pins 640, 642, coupling supports 644, 646, and bias springs 648, 650 (which may be compression springs or other suitable springs). In various respects, the coupling pins 640, 642 are formed of ceramic, but other materials are also contemplated. The coupling pins 640, 642 are slidably disposed within guide sleeves 627, 629 (as described above, they are disposed within extension lumens 626, 628) and extend through corresponding necks 632, 634 into the first cavity 622 and the second cavity 624, respectively, wherein the proximal ends of the coupling pins 640, 642 are fixedly supported (e.g., engaged therewith) by the coupling supports 644, 646, respectively. Coupling supports 644 and 646 are respectively disposed within the first cavity 622 and the second cavity 624, and define lateral dimensions (e.g., diameters) larger than the lateral dimensions of the necks 632 and 634, respectively, to prevent the coupling supports 644 and 646 from passing through the necks 632 and 634 and entering the extension cavities 626 and 628. Bias springs 648 and 650 are disposed between portions of the necks 632 and 634 and the coupling supports 644 and 646 to bias the coupling supports 644 and 646 distally relative to the base 610 and the inner extension 612, and thus bias the coupling pins 640 and 642. More specifically, bias springs 648 and 650 bias coupling supports 644 and 646 distally, and thus bias coupling pins 640 and 642, thereby coupling supports 644 and 646 abutting necks 632 and 634, and coupling pins 640 and 642 being positioned at their distalest points within extension cavities 626 and 628. At these distalest points, coupling pins 640 and 642 can still be recessed proximally within extension cavities 626 and 628, such as... Figure 6A As shown.

[0058] The near-side transmitter fiber 440 and the near-side detector fiber 450 extend distally through cavities 622 and 624, coupling supports 644 and 646, and coupling pins 640 and 642, and are fixed within coupling pins 640 and 642, such that the free distal coupling ends of fibers 440 and 450 are approximately flush with the distal surfaces of coupling pins 640 and 642, respectively.

[0059] Continue to refer to Figure 6A and Figure 6B In configuration 600, the distal connector body 462 includes a base 660 and an outer extension 662 extending proximally from the base 660. The base 660 is configured such that, at its distal end portion, it extends from, for example, from the common distal cable 482. Figure 4A and Figure 4B ) or probe body 130 ( Figure 5A and Figure 5B The receiver receives the remote transmitter fiber 480 and the remote detector fiber 490. The base 660 defines a first cavity and second cavities 672 and 674, which are configured to communicate with the hollow interior 663 of the outer extension 662 via a first aperture 673 and a second aperture 675, respectively. The first aperture 673 and the second aperture 675 define reduced diameters compared to the first cavity 672 and the second cavity 674.

[0060] In configuration 600, the distal connector body 462 further includes a first coupling assembly 676 and a second coupling assembly 678. Each coupling assembly 676, 678 includes coupling pins 680, 682, coupling supports 684, 686, and biasing springs 688, 690 (which may be compression springs or other suitable springs). The coupling pins 680, 682 are slidably configured to pass through holes 673, 675, respectively, and extend from cavities 672, 674 of the base 660 into the hollow interior 663 of the outer extension 662. The distal ends of the coupling pins 680, 682 are fixedly supported (e.g., engaged therewith) by the coupling supports 684, 686 within the cavities 672, 674, respectively. Coupling supports 684 and 686 are respectively disposed within the first cavity 672 and the second cavity 674, and define lateral dimensions (e.g., diameters) larger than the lateral dimensions of holes 673 and 675, respectively, to prevent coupling supports 684 and 686 from passing through holes 673 and 675 and entering the hollow interior 663 of the outer extension 662. Bias springs 688 and 690 are disposed between portions of holes 673 and 675 and coupling supports 684 and 686 to bias coupling supports 684 and 686 proximally relative to the base 660 and the extension 662, and thus bias coupling pins 680 and 682. More specifically, bias springs 688 and 690 bias the coupling supports 684 and 686 proximally, and thus bias the coupling pins 680 and 682, whereby the coupling supports 684 and 686 abut the walls of defining holes 673 and 675, and the coupling pins 680 and 682 are positioned at their proximal ends within the hollow interior 663 of the outer extension 662. At these proximal ends, the coupling pins 680 and 682 protrude at least partially through the hollow interior 663 of the outer extension 662. In various respects, the coupling pins 680 and 682 protrude to the proximal end of the outer extension 662. In other respects, the coupling pins 680 and 682 are recessed relative to the proximal end of the outer extension 662 in their proximal ends.

[0061] The far-side transmitter fiber 480 and the far-side detector fiber 490 extend proximally through cavities 672 and 674, coupling supports 684 and 686, and coupling pins 680 and 682, and are fixed within coupling pins 680 and 682, such that the free proximity coupling ends of fibers 480 and 490 are approximately flush with the proximity surfaces of coupling pins 680 and 682, respectively.

[0062] Still referencing Figure 6A and Figure 6B , combined Figure 4A and Figure 4B The components of connector 400 are described in detail, wherein connector 400 includes construction 600. Initially, connector bodies 412 and 462 are configured in a disengaged state spaced apart from each other. Figure 4B and Figure 6A In this position, as described above, the coupling pins 640, 642 of connector body 462 are located at their furthest ends, and the coupling pins 680, 682 of connector body 412 are located at their closest ends. To engage connector bodies 412, 462, they are brought close to each other, with arm 416 longitudinally aligned with channel 418. Connector bodies 412, 462 are configured such that the alignment of arm 416 with channel 418 also aligns coupling pins 640, 642 with coupling pins 680, 682, respectively. Therefore, connector bodies 412, 462 can only engage in an orientation that is properly aligned with each other.

[0063] When connector bodies 412 and 462 approach (align) each other, arm 416 slides longitudinally through channel 418, inner extension 612 of connector body 462 is inserted into outer extension 662 of connector body 412, and coupling pins 680 and 682 slide through the open distal ends of extension cavities 626 and 628 and enter extension cavities 626 and 628 (and enter guide sleeves 627 and 629, if provided). During this approach, and while coupling pins 640 and 642 of connector body 462 are still arranged in their distal positions and coupling pins 680 and 682 of connector body 412 are still arranged in their proximal positions, the free ends of coupling pins 640 and 642 abut against the free ends of coupling pins 680 and 682 before the fingers 417 of arm 416 engage within the recess 419 of channel 418. Therefore, when the connector bodies 412 and 462 approach the fingers 417 within the engagement recess 419 to mechanically engage the connector bodies 412 and 462 with each other, the free ends of the coupling pins 640, 642 and 680, 682 overcome the bias of the springs 648, 650 and 688, 690 and push against each other, causing the coupling pins 640 and 642 of the connector body 462 to be pushed proximally and / or the coupling pins 680 and 682 of the connector body 412 to be pushed distally, thereby compressing the springs 648, 650 and / or the springs 688, 690. This movement of coupling pins 640, 642 and 680, 682 allows fingers 417 to engage within recesses 419, mechanically engaging connector bodies 412, 462. Once this engagement is achieved, the free ends of coupling pins 640, 642 and 680, 682 remain abutted and tightly connected under the bias of corresponding springs 648, 650 and 688, 690. Therefore, the free distal coupling ends of optical fibers 440, 450 are held under bias to be sufficiently optically coupled to the free proximal coupling ends of optical fibers 480, 490, respectively, enabling efficient and accurate tissue detection.

[0064] Go to Figure 7 This illustrates another configuration 700 for the proximal connector body 412 and the distal connector body 462 to facilitate operative coupling of the transmitter fibers 440, 480 and the detector fibers 450, 490 to each other during mechanical engagement (e.g., as described above) of the proximal connector body 412 and the distal connector body 462. Configuration 700 is similar to and may include configuration 600 ( Figures 6A to 6B Any features of ), and therefore, only construction 700 and construction 600 will be described in detail below. Figures 6A to 6B The differences between them are omitted for brevity, and similarities are briefly described or completely omitted for the sake of conciseness.

[0065] In configuration 700, the distal connector body 462 is related to the above configuration 600 ( Figures 6A to 6B The same as described in the detailed description above. However, the proximal connector body 412 includes fixed coupling pins 740, 742, instead of including the components described above regarding construction 600 ( Figures 6A to 6B The movable coupling pins are described in detail below. More specifically, in configuration 700, the proximal connector body 412 includes coupling pins 740 and 742, respectively fixedly supported (e.g., engaged within the coupling supports) by coupling supports 744 and 746, which are in turn fixedly engaged within the proximal connector body 412, such that the coupling pins 740 and 742 extend a fixed distance into the corresponding extension lumens 726 and 728 (and their sleeves 727 and 729, if provided). In these fixed positions, the coupling pins 740 and 742 can be recessed proximally within the extension lumens 726 and 728, as... Figure 7 As shown.

[0066] Also refer to Figure 4A and Figure 4B In order to assemble connector 400, which includes a configuration 700 similar to the one described in detail above, connector bodies 412 and 462 are close to each other, wherein arm 416 is longitudinally aligned with channel 418, such that coupling pins 740 and 742 are also aligned with coupling pins 780 and 782 respectively.

[0067] When connector bodies 412 and 462 approach each other (align with each other), before the fingers 417 of arm 416 engage within the recess 419 of channel 418, the free ends of coupling pins 740, 742 and 780, 782 abut each other to overcome the bias of springs 788, 790 and push coupling pins 780, 780, respectively, so that coupling pins 780, 782 of connector body 462 are pushed distally, thereby compressing springs 788, 790. This movement of coupling pins 780, 782 allows the fingers 417 to engage within the recess 419, so that connector bodies 412 and 462 are mechanically engaged with each other, and once this engagement is achieved, the free ends of coupling pins 740, 742 and 780, 782 remain abut each other and tightly connected under the bias of springs 788, 790. Therefore, the free distal coupling ends of optical fibers 440 and 450 are kept optically coupled to the free proximal coupling ends of optical fibers 480 and 490 respectively under bias voltage, so as to enable efficient and accurate tissue detection.

[0068] Although the above description details configuration 700, in which connecting pins 740, 742 are fixed and connecting pins 780, 782 are movable, it is also conceivable to provide the opposite configuration, for example, in which connecting pins 780, 782 are fixed and connecting pins 740, 742 are movable.

[0069] refer to Figure 8 and Figure 9 The connector body 412 is shown in configurations 800 and 900. Configurations 800 and 900 of the connector body 412 are similar to and may include configurations 600 and 700 as detailed above. Figures 6A to 6B and Figure 7 Any features of the characteristics of the features ...

[0070] In constructing 800, it is not as in constructing 600 ( Figure 6A Instead of the coupling pins recessed proximally (or further proximally) within the extension cavities as in the previous configuration, the coupling pins 840, 842 of configuration 800 are positioned further distally from the distal side of the inner extension 812, substantially flush or otherwise completely flush (and therefore not recessed or minimally recessed within the extension cavities 826, 828). This arrangement helps prevent dust or other debris from entering the extension cavities 826, 828 when the connector body 412 is disconnected.

[0071] In constructing 900, it is not as in constructing 700 ( Figure 7 Instead of fixing the coupling pin in a proximal recessed position (or a more proximal position) within the extension cavity as in the previous configuration, the coupling pins 940, 942 of configuration 900 are fixed in a more distal position, approximately flush position, or otherwise completely flush position within the extension cavities 926, 928 relative to the distal side of the inner extension 912. This arrangement helps prevent dust or other debris from entering the extension cavities 926, 928 when the connector body 412 is disconnected.

[0072] General Reference Figures 1 to 4BThe detailed construction of connector 400 described above facilitates the reuse of part or all of system 10. For example, in some respects, connector 400 and console 170 are reusable, while probe 100 is disposable. In other respects, connector 400, console 170, and probe 100 are all reusable, wherein detachment from them facilitates cleaning and / or disinfection of probe 100 and / or connector 400 in preparation for reuse. In other respects, although two or more of connector 400, console 170, and probe 100 may be reusable, such components may have different usage limitations, thus enabling the detachment and replacement of some components. Furthermore, in some respects, various different probes 100 can be provided, such as probes 100 of different lengths, orientations, handle constructions, etc., and thus can be replaced without also needing to replace connector 400 and / or console 170. Similarly, connector 400 with cables of different lengths can be provided for use with probe 100 and / or console 170. Other constructions are also envisioned.

[0073] Go to Figures 10 to 12B In various respects, while it may be desirable to be able to reuse probe 100, it is also advantageous to limit the number of times probe 100 can be used, for example, to ensure proper functioning and to prevent the use of probe 100 from exceeding its usable lifespan. In these respects, connector 400 may include a limited-use mechanism 1000 to enable probe 100 to connect to console 170 ( Figures 1 to 3 The optical coupling and subsequent decoupling of probe 100 are prevented until the defined usage limits are reached and then the probe 100 is prevented from being coupled to the console 170. Figures 1 to 3 The optical coupling of the probe 100 limits its use. The limited-use mechanism 1000 can be used with any construction of the connector 400 detailed above or any other suitable connector 400. Therefore, aspects and features of the connector 400 that are not closely related to the understanding of the structure and function of the limited-use mechanism 1000 are only briefly described below, or are omitted entirely for the sake of brevity.

[0074] The limited-use mechanism 1000 includes a locking assembly 1010 disposed within the distal connector body 462 of the connector 400 and an actuating post 1060 coupled to the proximal connector body 412 of the connector 400. However, a reverse configuration is also conceivable, for example, where the locking assembly 1010 is disposed within the proximal connector body 412 and the actuating post 1060 is coupled to the distal connector body 462. The locking assembly 1010 includes a ratchet 1012, a ratchet pawl 1014, and two or more leaf springs 1016, 1018, 1020 (or other suitable biasing members), an actuating post 1022, and a biasing spring 1024, such as a compression spring.

[0075] Ratchet 1012 is rotatably mounted around a transverse pin 1026 fixed within a distal connector body 462 of connector 400. Ratchet 1012 includes a plurality of one-way teeth 1028 arranged annularly around its outer periphery. Ratchet 1012 also includes an end stop recess 1030 defined on its outer periphery. One or more leaf springs, such as leaf springs 1016 and 1018, engage different one-way teeth 1028 of ratchet 1012 to bias ratchet 1012 into a fixed position. Furthermore, springs 1016 and 1018 and the one-way teeth 1028 cooperate to allow ratchet 1012 to move only in one direction (e.g., from...). Figures 10 to 12B The ratchet 1012 rotates counterclockwise (as shown), while preventing it from rotating in the opposite direction (e.g., from...). Figures 10 to 12B The ratchet 1012 rotates clockwise (as shown). More specifically, springs 1016 and 1018 are configured to engage the stop surface of the one-way tooth 1028 to prevent clockwise rotation of the ratchet 1012 (from the direction shown). Figures 10 to 12B The orientation shown is such that it is cam-driven on the cam surface of the one-way tooth 1028 to allow the ratchet 1012 to rotate counterclockwise (from...). Figures 10 to 12B (The orientation shown).

[0076] Continue to refer to Figures 10 to 12B A ratchet pawl 1014 is pivotally coupled to a first end 1023a of an actuating post 1022 about a transverse pin 1032, the transverse pin being slidable within a longitudinal track 1034 defined within a distal connector body 462 of the connector 400. A spring 1020 biases the ratchet pawl 1014 toward a ratchet 1012 about the transverse pin 1032 to maintain contact between the ratchet pawl 1014 and the ratchet 1012. The ratchet pawl 1014 includes engaging fingers 1015 disposed at its end opposite the pivotable end. Translation of the actuating post 1022 within the distal connector body 462 of the connector 400 causes the transverse pin 1032 to slide through the track 1034, thereby translating the ratchet pawl 1014 within the distal connector body 462 of the connector 400. In a first (e.g., more proximal) position of the actuating post 1022 ( Figure 10 The engaging fingers 1015 of the ratchet pawl 1014 are spaced proximally relative to the stop surface of the teeth 1028 of the ratchet 1012. When the actuating pin 1022 moves from the first position to a second (e.g., more distal) position ( Figure 11When the ratchet pawl 1014 is in the first position, the engaging finger 1015 translates and pivots, pushing the engaging finger 1015 into the stop surface, thereby causing the ratchet 1012 to rotate by an increment. Each increment corresponds to the rotation of the ratchet 1012, causing the springs 1016, 1018 to be cam-driven on the cam surface of a one-way tooth 1028 and engaged with the next one-way tooth 1028. Once the springs 1016, 1018 engage the next one-way tooth 1028, and the actuating post 1022 is in the first position ( Figure 10 Upon return, the engagement finger 1015 is driven by the cam on the one-way tooth 1028 to a position spaced proximally from the stop surface of the next tooth 1028 relative to the ratchet 1012.

[0077] The bias spring 1024 biases the actuator 1022 toward the first position. Figure 10 In at least a first position, the second end 1023b of the actuating post 1022 (opposite to its first end 1023a) is at least partially exposed within the distal connector body 462 of the connector 400. Furthermore, the actuating post 1060 of the proximal connector body 412 of the connector 400 is configured to align and engage with the actuating post 1022 when the proximal connector body 412 and the distal connector body 462 approach each other, for example, to engage the proximal connector body 412 and the distal connector body 462 of the connector 400 with each other as detailed above. More specifically, when the actuating post 1022 is in the first position (under the bias of the bias spring 1024)... Figure 10 In the case of ), the attempted engagement of the proximal connector body 412 and the distal connector body 462 of the connector 400 pushes the actuating post 1060 into the actuating post 1022, thereby translating the actuating post 1022 from the first position to the second position. Figure 11 As described above, this translation of the actuating post 1022 from the first position to the second position causes the ratchet 1012 to rotate by an increment. With the proximal connector body 412 and the distal connector body 462 engaged with each other, the actuating post 1022 remains in the second position. Figure 11 Upon disengagement, the actuating pin 1022 returns to the first position adjacent to the next tooth 1028 of the ratchet 1012 (which has already rotated by one increment). Figure 10 ).

[0078] During each subsequent engagement and disengagement of the proximal connector body 412 and the distal connector body 462 of connector 400, the aforementioned incremental rotation of ratchet 1012 is repeated until a locked state is achieved upon final engagement. More specifically, ratchet 1012 rotates incrementally until... Figure 11As shown, the engaging fingers 1015 of the ratchet pawl 1014 are positioned at the final tooth 1028 adjacent to the end stop recess 1030 of the ratchet 1012. This corresponds to the final engagement of the proximal connector body 412 and the distal connector body 462, wherein, as the proximal connector body 412 and the distal connector body 462 subsequently disengage and the actuating post 1022 returns toward the first position, the engaging fingers 1015 are cam-driven on the final one-way tooth 1028 and engage within the end stop recess 1030.

[0079] For details, please refer to the following: Figure 12A and Figure 12B When the engaging finger 1015 engages within the end stop recess 1030, a locked state is achieved, thereby preventing movement of the engaging finger 1015 and thus preventing the actuating post 1022 from moving from the first position to the second position. Therefore, in the locked state, any attempt to engage the proximal connector body 412 and the distal connector body 462 of the connector 400 will fail because the actuating post 1060 will contact the actuating post 1022 (which is fixed in the first position relative to the distal connector body 462 in the locked state) to prevent further approach between the proximal connector body 412 and the distal connector body 462 before they can engage. Thus, further use of the connector 400 is prevented.

[0080] Refer again Figures 10 to 12B The number of teeth 1028 of the ratchet 1012 can be selected based on the permissible number of uses (e.g., engagement and disengagement) of the proximal connector body 412 and the distal connector body 462 of the connector 400. For example, with ten (10) teeth 1028, the proximal connector body 412 and the distal connector body 462 of the connector 400 can engage and disengage ten (10) times before reaching a locked state in which further engagement is prevented. However, any other suitable usage limitations are also contemplated.

[0081] While several aspects of this disclosure have been shown in the accompanying drawings, it is not intended to limit this disclosure to those aspects, as the disclosure is intended to be as broad as permitted in the art and should be interpreted in the same manner. Therefore, the foregoing description should not be construed as restrictive, but merely as an example of a particular configuration. Those skilled in the art will be able to conceive of other modifications within the scope and spirit of the appended claims.

Claims

1. An optical connector for a tissue detection system, characterized in that, The optical connector includes: A first connector portion, the first connector portion comprising: A first body, the first body having at least one first snap-fit ​​component; A first pin and a second pin, the first pin and the second pin being slidably disposed within the first body; A first biasing member and a second biasing member bias the first pin and the second pin toward the coupling end of the first connector portion. A first input optical fiber extends through the first pin to the adjacent end of the first pin; and A first output optical fiber extends through the second pin to the adjacent end of the second pin; and The second connector portion includes: The second body has at least one second snap-fit ​​component; The third pin and the fourth pin are disposed within the second body; A second input optical fiber extends through the third pin to the adjacent end of the third pin; and The second output optical fiber extends through the fourth pin to the adjacent end of the fourth pin; The first connector portion and the second connector portion are configured to achieve proximity between the coupling end of the first connector portion and the coupling end of the second connector portion: The first and second snap-fit ​​components engage with each other to releasably engage the first and second bodies with each other. The first and second pins are caused to contact the adjacent ends of the third and fourth pins respectively, so that the first and second pins move against the corresponding bias of the first and second bias members, thereby establishing optical coupling between the first and second input optical fibers and between the first and second output optical fibers under the bias of the first and second bias members.

2. The optical connector according to claim 1, wherein: The third pin and the fourth pin are slidably disposed within the second body. The second connector portion further includes a third biasing member and a fourth biasing member, the third biasing member and the fourth biasing member biasing the third pin and the fourth pin toward the coupling end of the second connector portion, and The proximity of the coupling ends of the first connector portion and the second connector portion causes the third pin and the fourth pin to move against the corresponding bias of the third bias member and the fourth bias member, thereby establishing optical coupling between the first input fiber and the second input fiber and between the first output fiber and the second output fiber under the bias of the first bias member, the second bias member, the third bias member and the fourth bias member.

3. The optical connector according to claim 1, wherein the third pin and the fourth pin are fixed relative to the second body.

4. The optical connector according to any one of claims 1 to 3, wherein the first pin and the second pin are disposed within a first cavity and a second cavity defined within the first body, and wherein the third pin and the fourth pin are respectively insertable into the first cavity and the second cavity.

5. The optical connector of claim 4, wherein each of the first cavity and the second cavity includes a sleeve disposed therein.

6. The optical connector of claim 5, wherein the sleeve is ceramic.

7. The optical connector according to any one of claims 1 to 3, 5 or 6, wherein the first pin, the second pin, the third pin and the fourth pin are ceramic.

8. The optical connector according to any one of claims 1 to 3, 5 or 6, wherein: At least one of the first snap-fit ​​components includes either an arm or a channel, the arm including an engaging finger at its free end, and the channel defining an engaging recess. At least one of the second snap-fit ​​components includes the other of the arm or the channel, the arm including the engaging finger at the free end of the arm, and the channel defining the engaging recess. The arm is configured to slide through the channel to engage the engagement finger within the engagement recess, thereby allowing the first body and the second body to be releasably engaged with each other.

9. The optical connector according to any one of claims 1 to 3, wherein: The optical connector also includes a first cable and a second cable extending from the second body, wherein the second input optical fiber extends through the first cable, and wherein the second output optical fiber extends through the second cable.

10. The optical connector of claim 9, wherein the optical connector further comprises a shared cable extending from the first body, wherein the first input optical fiber and the first output optical fiber extend through the shared cable.

11. The optical connector of claim 9, wherein the first body defines a portion of the probe, and wherein the first input fiber and the first output fiber extend through the probe.

12. The optical connector of claim 9, wherein the optical connector further comprises a first plug and a second plug disposed at the ends of the first cable and the second cable, the first plug being configured to connect to an optical detector and the second plug being configured to connect to an optical emitter.

13. The optical connector according to any one of claims 1 to 3, wherein the optical connector further comprises a use restriction mechanism configured to prevent the first body and the second body from engaging and disengaging from each other after a predetermined number of engagements and disengagements.

14. The optical connector of claim 13, wherein the use restriction mechanism includes an actuating post that, in the unlocked state of the use restriction mechanism, is movable from a first position to a second position as the coupling ends of the first connector portion and the second connector portion approach each other to allow optical coupling between the first input fiber and the second input fiber, and between the first output fiber and the second output fiber.

15. The optical connector of claim 14, wherein in the locked state of the use restriction mechanism, the actuation post is held in the first position to prevent optical coupling between the first input fiber and the second input fiber or between the first output fiber and the second output fiber.

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