A handheld parathyroid gland monitoring device

Abstract

This invention discloses a handheld parathyroid gland monitoring device, comprising a housing and an optical fiber module. The housing houses a laser emitting module, a collimating optical path module, a filtering optical path module, a photoelectric conversion module, and a power supply module. The optical fiber module includes an optical fiber sleeve and several optical fibers. The housing is connected to the optical fiber sleeve. One end of each optical fiber is coupled to the laser emitting module via an optical fiber coupler, and the other end passes through the optical fiber sleeve. The optical fiber coupler has a blood oxygenation optical path connection point, a blood oxygenation optical receiving optical path connection point, and a laser emitting optical fiber connection point. The optical fibers connect the optical fiber coupler, the collimating optical path module, and the filtering optical path module. This invention can simultaneously perform parathyroid gland identification and blood supply status detection, integrating these two functions into a single device. It offers rapid detection, high accuracy, and a small device size, resulting in high operational efficiency for users.

Description

Technical Field

[0001] This invention relates to the field of parathyroid gland identification, and particularly to a handheld parathyroid gland monitoring device. Background Technology

[0002] In recent years, the number of thyroid diseases, especially thyroid cancer, has increased significantly, and thyroid cancer has become the fastest-growing solid malignant tumor worldwide. Currently, surgery remains the primary radical treatment for thyroid cancer. Thyroid-related surgeries, especially the commonly used total thyroidectomy with central lymph node dissection, require meticulous precision due to their proximity to the carotid artery and parathyroid glands. The parathyroid glands, as one of the body's important endocrine organs, are named for their proximity to the thyroid gland and secrete parathyroid hormone (PTH), which regulates calcium and phosphorus metabolism in the body.

[0003] Protecting the parathyroid glands during thyroid surgery has always been a crucial issue for clinicians. Parathyroid glands are small, attached to the surface of the thyroid gland or embedded within it, with highly variable locations and numbers, and their color and shape resemble surrounding lymph nodes or fat. Therefore, their blood supply is easily disrupted during thyroid surgery, causing parathyroid damage or even accidental removal, leading to hypoparathyroidism and resulting in temporary or permanent symptoms. Transient hypoparathyroidism causing temporary hypocalcemia has a short-lived impact on the patient's quality of life, manifesting as numbness of the lips, limb twitching, and generalized numbness. However, permanent hypoparathyroidism causes permanent hypocalcemia, leading to numbness in the hands and feet and limb twitching, affecting daily life. In severe cases, it can be accompanied by spasms of the laryngeal and diaphragmatic muscles, even causing suffocation and death, requiring lifelong calcium and vitamin D supplementation.

[0004] Currently, the commonly used methods for identifying parathyroid glands in clinical practice are intraoperative frozen section and nano-carbon parathyroid negative contrast imaging. For intraoperative frozen section detection, the procedures of sectioning and testing need to be completed during the operation. The entire process involves many personnel, is complex, and typically takes 20-30 minutes. For a thyroid surgery that usually takes 1-2 hours, this adds excessive time and seriously affects surgical efficiency.

[0005] For nanocarbon negative contrast imaging of the parathyroid glands, in addition to requiring additional medication, nanocarbon cannot distinguish between parathyroid glands and fat granules; it cannot be used for patients with lymphatic obstruction; it cannot be used for lesions that have invaded a large area of ​​thyroid tissue and extended into the thyroid lymphatic drainage system, or for patients with cystic carcinomas or those requiring secondary surgery. The applicable surgical scope is limited.

[0006] Furthermore, none of the above techniques provide a method for intraoperative monitoring of parathyroid blood supply. The blood vessels supplying the parathyroid glands can be damaged by energy instruments, and the state of blood supply directly determines whether the tissue can survive and function in situ after surgery. Therefore, if the state of thyroid blood supply is not accurately measured intraoperatively, resulting in inadequate treatment of poorly supplied parathyroid tissue, postoperative calcium metabolism may still be affected, leading to sequelae. Currently, all methods for assessing parathyroid blood supply rely solely on visual inspection, but this method has a large margin of error, relies too heavily on the surgeon's experience, and may also lead to the unnecessary re-transplantation of parathyroid tissue with normal blood supply, resulting in extra effort. Summary of the Invention

[0007] The purpose of this invention is to provide a handheld parathyroid gland monitoring device to solve at least one of the above-mentioned technical problems. It can simultaneously identify the parathyroid glands and detect blood supply status, integrating the two functions into one device. The detection time is fast, the accuracy is high, the overall device is small in size, easy to use, and has high operating efficiency for users.

[0008] The embodiments of the present invention are implemented as follows:

[0009] A handheld parathyroid monitoring device includes a housing and an optical fiber module. The housing houses a laser emission module, a collimating optical path module, a filtering optical path module, a photoelectric conversion module 8, and a power supply module 4.

[0010] The optical fiber module includes an optical fiber sleeve 1 and several optical fibers.

[0011] The housing is connected to the optical fiber sleeve 1.

[0012] One end of each of the optical fibers is coupled to the laser emitting module via an optical fiber coupler 6, and the other end passes through the optical fiber sleeve 1.

[0013] The optical fiber coupler 6 is provided with a blood oxygen optical path optical fiber connection point 10, a blood oxygen optical receiving optical path optical fiber connection point 11, and a laser emitting optical fiber connection point 12.

[0014] The blood oxygen optical fiber connection point 10 is equipped with a blood oxygen optical emission tube 15.

[0015] The blood oxygen light receiving optical fiber connection point 11 is equipped with a blood oxygen light receiving tube 14.

[0016] The laser emitting fiber connection point 12 is equipped with a laser emitting tube 13.

[0017] Several optical fibers connect the optical fiber coupler 6, the collimating optical path module, and the filtering optical path module.

[0018] In a preferred embodiment of the present invention, the optical fiber module of the handheld parathyroid monitoring device includes a first optical fiber 16, a second optical fiber 17, a third optical fiber 18, and a fourth optical fiber 19.

[0019] The first optical fiber 16 is connected to the laser emitting tube 13.

[0020] The second optical fiber 17 is connected to the collimated optical path module.

[0021] The third optical fiber 18 is connected to the blood oxygen light emitting tube 15.

[0022] The fourth optical fiber 19 is connected to the blood oxygen light receiving tube 14.

[0023] The first optical fiber 16 and the second optical fiber 17 form the first optical path.

[0024] The third optical fiber 18 and the fourth optical fiber 19 form the second optical path.

[0025] The technical advantages are as follows: the first optical fiber 16 and the second optical fiber 17 connect the emitted light of the laser tube with the received light of the parathyroid spectrum. The third optical fiber 18 and the fourth optical fiber 19 connect the blood oxygen LED light with the blood oxygen receiving light. The four optical fibers together form two sets of optical paths for transmission and reception.

[0026] In a preferred embodiment of the present invention, the housing of the handheld parathyroid monitoring device is provided with an adjustment and mounting assembly 7, and the collimation optical path module and the filter optical path module are installed in the adjustment and mounting assembly 7.

[0027] The adjustment mounting assembly includes an adjustment sleeve 20 and an adjustment structure 21.

[0028] The adjusting structure 21 slides within the adjusting sleeve 20.

[0029] One end of the adjustment structure 21 is connected to several optical fibers passing through the optical fiber coupler 6, and the collimation optical path module is installed inside the other end.

[0030] The filter optical path module is installed inside one end of the adjusting sleeve 20 near the adjusting structure 21, and the photoelectric conversion module 8 is installed at the other end.

[0031] Its technical effect is that by adjusting the position of the collimating optical path module through the adjustment and installation components, the projected optical path through the lens is horizontal.

[0032] In a preferred embodiment of the present invention, the collimating optical path module of the handheld parathyroid monitoring device includes a collimating lens 22.

[0033] Its technical advantage lies in the fact that the collimated optical path is used to collimate the received optical fiber return fiber through a lens. Preprocessing the optical path ensures that the subsequent optical path filtering effect meets expectations.

[0034] In a preferred embodiment of the present invention, the optical path module of the handheld parathyroid monitoring device includes a notch filter 23 and a bandpass filter 24.

[0035] Its technical effect is that light passing through the filter can achieve filtering of specific wavelengths. The optical filtering module is used to filter out ambient light, removing light with wavelengths other than 820nm, for signal determination.

[0036] In a preferred embodiment of the present invention, the photoelectric conversion module 8 of the handheld parathyroid monitoring device includes a photodiode 25 and a connection circuit.

[0037] The photodiode 25 is installed inside the adjustment structure 21.

[0038] Its technical effect is as follows: the photoelectric conversion module 8 is used to complete the conversion of light intensity and electrical signal, converting the filtered light into light signal and electrical signal to form a circuit signal that can be processed and judged for the result output of the back end.

[0039] In a preferred embodiment of the present invention, the power supply module 4 of the handheld parathyroid monitoring device includes a battery and a protection circuit.

[0040] Its technical advantage lies in the fact that the battery is used to power the entire system.

[0041] The protection circuit is used to control overshoot and voltage during the charging process.

[0042] In a preferred embodiment of the present invention, the handheld parathyroid monitoring device further includes a main control module 8.

[0043] The main control module 8 includes a main control circuit board, on which are respectively provided the interfaces for the laser emission module, the collimating optical path module, the filtering optical path module and the photoelectric conversion module 8.

[0044] Its technical advantages are as follows: the main control module 8 provides the driving force for laser emission, the driving force and acquisition of blood oxygen optical path, the acquisition of photoelectric conversion results, the filtering and post-processing of system signals, and the operation and driving of human-machine interface.

[0045] In a preferred embodiment of the present invention, the handheld parathyroid monitoring device further includes a user instruction module.

[0046] The user instruction module includes a display and an alarm.

[0047] The display and the alarm are respectively connected to the main control circuit board.

[0048] In a preferred embodiment of the present invention, the housing of the handheld parathyroid monitoring device is provided with an opening at the end away from the optical fiber module, and a fastening cover 9 is provided at the opening.

[0049] The inner side of the snap-fit ​​cover 9 is provided with a wire harness fixing component 5.

[0050] Its technical advantage lies in the fact that an installation structure is reserved on the housing, which facilitates wiring.

[0051] The beneficial effects of the embodiments of the present invention are:

[0052] This invention relates to a handheld parathyroid gland monitoring device that integrates a parathyroid gland monitoring system and a blood supply monitoring system into a single device. It features a structural design incorporating fiber optic couplers and multi-path coupling capabilities. Utilizing a multi-fiber composite optical path, multiple fibers can transmit multiple sets of light within a single handle, ensuring higher isolation between light transmission and reception. The use of fiber optics for close-range contact with the tissue being tested effectively eliminates ambient light interference. This handheld parathyroid gland monitoring device is battery-powered and performs both parathyroid gland and blood supply monitoring functions. Compared to traditional parathyroid gland monitoring devices, it employs a low-power design, achieving the size and weight of a handheld device. Attached Figure Description

[0053] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 This is a schematic diagram of the structure of the handheld parathyroid monitoring device of the present invention;

[0055] Figure 2 This is an exploded view of the adjustment and mounting components of the handheld parathyroid monitoring device of the present invention.

[0056] Figure 3 This is a schematic diagram of the adjustment and installation components of the handheld parathyroid monitoring device of the present invention;

[0057] Figure 4 This is a schematic diagram of one side of the fiber optic coupler of the handheld parathyroid monitoring device of the present invention;

[0058] Figure 5This is a schematic diagram of the other side of the fiber optic coupler of the handheld parathyroid monitoring device of the present invention;

[0059] Figure 6 This is a schematic diagram of the cross-sectional structure of the optical fiber in the handheld parathyroid monitoring device of the present invention;

[0060] Figure 7 This is a schematic diagram illustrating the operating principle of the handheld parathyroid monitoring device of the present invention.

[0061] In the diagram: 1-Fiber optic sleeve; 2-Fixing collar; 3-Trigger detection button; 4-Power supply module; 5-Wire harness fixing component; 6-Fiber optic coupler; 7-Adjustment and installation assembly; 8-Photoelectric conversion module; 9-Snap-on cover; 10-Blood oxygenation optical path fiber optic connection point; 11-Blood oxygenation optical receiving optical path fiber optic connection point; 12-Laser emission fiber optic connection point; 13-Laser emission tube; 14-Blood oxygenation optical receiving tube; 15-Blood oxygenation optical emission tube; 16-First fiber; 17-Second fiber; 18-Third fiber; 19-Fourth fiber; 20-Adjustment sleeve; 21-Adjustment structure; 22-Collimating lens; 23-Notch filter; 24-Bandpass filter; 25-Photodiode. Detailed Implementation

[0062] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0063] Please refer to Figures 1 to 6 An embodiment of the present invention provides a handheld parathyroid monitoring device, which includes a housing and an optical fiber module. The housing houses a laser emission module, a collimating optical path module, a filtering optical path module, a photoelectric conversion module 8, and a power supply module 4.

[0064] The optical fiber module includes an optical fiber sleeve 1 and several optical fibers.

[0065] The housing is connected to the optical fiber sleeve 1 via a fixing collar 2.

[0066] One end of each of the optical fibers is coupled to the laser emitting module via an optical fiber coupler 6, and the other end passes through the optical fiber sleeve 1.

[0067] The optical fiber coupler 6 is provided with a blood oxygen optical path optical fiber connection point 10, a blood oxygen optical receiving optical path optical fiber connection point 11, and a laser emitting optical fiber connection point 12.

[0068] The blood oxygen optical fiber connection point 10 is equipped with a blood oxygen optical emission tube 15.

[0069] The blood oxygen light receiving optical fiber connection point 11 is equipped with a blood oxygen light receiving tube 14.

[0070] The laser emitting fiber connection point 12 is equipped with a laser emitting tube 13.

[0071] Several optical fibers connect the optical fiber coupler 6, the collimating optical path module, and the filtering optical path module.

[0072] The fiber optic coupler 6 is used to couple the optical fiber with components such as the back-end active optical path devices to ensure the physical stability and efficiency of the optical path.

[0073] The blood oxygen light emitting tube 15 is a blood oxygen light emitting LED.

[0074] The blood oxygen light receiving tube 14 is a blood oxygen light receiving optical path photodiode.

[0075] The laser emitting tube 13 is a laser emitting diode.

[0076] It mainly uses a laser tube to emit laser light.

[0077] In a preferred embodiment of the present invention, the optical fiber module of the handheld parathyroid monitoring device includes a first optical fiber 16, a second optical fiber 17, a third optical fiber 18, and a fourth optical fiber 19.

[0078] The first optical fiber 16 is connected to the laser emitting tube 13.

[0079] The second optical fiber 17 is connected to the collimated optical path module.

[0080] The third optical fiber 18 is connected to the blood oxygen light emitting tube 15.

[0081] The fourth optical fiber 19 is connected to the blood oxygen light receiving tube 14.

[0082] The first optical fiber 16 and the second optical fiber 17 form the first optical path.

[0083] The third optical fiber 18 and the fourth optical fiber 19 form the second optical path.

[0084] The technical advantages are as follows: the first optical fiber 16 and the second optical fiber 17 connect the emitted light of the laser tube with the received light of the parathyroid spectrum. The third optical fiber 18 and the fourth optical fiber 19 connect the blood oxygen LED light with the blood oxygen receiving light. The four optical fibers together form two sets of optical paths for transmission and reception.

[0085] In a preferred embodiment of the present invention, the housing of the handheld parathyroid monitoring device is provided with an adjustment and mounting assembly 7, and the collimation optical path module and the filter optical path module are installed in the adjustment and mounting assembly 7.

[0086] The adjustment mounting assembly includes an adjustment sleeve 20 and an adjustment structure 21.

[0087] The adjusting structure 21 slides within the adjusting sleeve 20.

[0088] One end of the adjustment structure 21 is connected to several optical fibers passing through the optical fiber coupler 6, and the collimation optical path module is installed inside the other end.

[0089] The filter optical path module is installed inside one end of the adjusting sleeve 20 near the adjusting structure 21, and the photoelectric conversion module 8 is installed at the other end.

[0090] Its technical effect is that by adjusting the position of the collimating optical path module through the adjustment and installation components, the projected optical path through the lens is horizontal.

[0091] In a preferred embodiment of the present invention, the collimating optical path module of the handheld parathyroid monitoring device includes a collimating lens 22.

[0092] Its technical advantage lies in the fact that the collimated optical path is used to collimate the received optical fiber return fiber through a lens. Preprocessing the optical path ensures that the subsequent optical path filtering effect meets expectations.

[0093] In a preferred embodiment of the present invention, the optical path module of the handheld parathyroid monitoring device includes a notch filter 23 and a bandpass filter 24.

[0094] Its technical effect is that light passing through the filter can achieve filtering of specific wavelengths. The optical filtering module is used to filter out ambient light, removing light with wavelengths other than 820nm, for signal determination.

[0095] In a preferred embodiment of the present invention, the photoelectric conversion module 8 of the handheld parathyroid monitoring device includes a photodiode 25 and a connection circuit.

[0096] The photodiode 25 is installed inside the adjustment structure 21.

[0097] Its technical effect is as follows: the photoelectric conversion module 8 is used to complete the conversion of light intensity and electrical signal, converting the filtered light into light signal and electrical signal to form a circuit signal that can be processed and judged for the result output of the back end.

[0098] In a preferred embodiment of the present invention, the power supply module 4 of the handheld parathyroid monitoring device includes a battery and a protection circuit.

[0099] Its technical advantage lies in the fact that the battery is used to power the entire system.

[0100] The protection circuit is used to control overshoot and voltage during the charging process.

[0101] In a preferred embodiment of the present invention, the handheld parathyroid monitoring device further includes a main control module 8.

[0102] The main control module 8 includes a main control circuit board, on which are respectively provided the interfaces for the laser emission module, the collimating optical path module, the filtering optical path module and the photoelectric conversion module 8.

[0103] The main control circuit board connects to all external actuators or sensors.

[0104] The main control circuit board is connected to trigger detection button 3.

[0105] Its technical advantages are as follows: the main control module 8 provides the driving force for laser emission, the driving force and acquisition of blood oxygen optical path, the acquisition of photoelectric conversion results, the filtering and post-processing of system signals, and the operation and driving of human-machine interface.

[0106] In a preferred embodiment of the present invention, the handheld parathyroid monitoring device further includes a user instruction module.

[0107] The user instruction module includes a display and an alarm.

[0108] The display and the alarm are respectively connected to the main control circuit board.

[0109] The display is an LED display used to provide a user interface, display signal strength, and provide result guidance information to the user using LED lights.

[0110] The alarm uses a buzzer to provide an alarm sound.

[0111] In a preferred embodiment of the present invention, the housing of the handheld parathyroid monitoring device is provided with an opening at the end away from the optical fiber module, and a fastening cover 9 is provided at the opening.

[0112] The inner side of the snap-fit ​​cover 9 is provided with a wire harness fixing component 5.

[0113] Its technical advantage lies in the fact that an installation structure is reserved on the housing, which facilitates wiring.

[0114] Please refer to Figure 7The present invention provides an operating principle for a handheld parathyroid gland monitoring device, including:

[0115] (1) Under the control of the main control circuit board, the laser emitting tube 13 emits a laser with a wavelength of 780nm, which is transmitted to the head of the equipment through the fiber optic coupler 6. The operator aligns the head end with the target tissue and enters the testing phase.

[0116] (2) After the target tissue receives the laser, due to its own fluorescence properties, it will generate reflected light with a wavelength of about 820nm on the surface. The reflected light is transmitted through the optical fiber and enters the collimated optical path module.

[0117] (3) The collimation optical path module works in conjunction with the back-end filtering optical path module to process ambient light and other interfering light, and output the processed optical signal to the subsequent stage.

[0118] (4) After receiving the processed optical signal, the photoelectric conversion module 8 generates a corresponding electrical signal using the photoelectric effect, which is then collected by the main control circuit board.

[0119] (5) The main control circuit board performs back-end digital filtering and signal recognition on the acquired signal to form a new statistical output result, which is then prompted to the operator for judgment through sound and light methods such as LEDs.

[0120] (6) When it is necessary to detect the blood supply status, the operator presses the trigger detection button 3 to trigger the blood supply detection function. The main control circuit board controls the blood oxygen light LED in the fiber optic coupler 6 to emit (660nm / 910nm), and uses reflection to detect the oxygenation status in the blood. The feedback signal reaches the main control circuit board and completes the corresponding blood oxygen value judgment. Finally, the blood oxygen value output evaluates the blood supply status of the parathyroid glands.

[0121] The embodiments of the present invention aim to protect a handheld parathyroid gland monitoring device, which has the following effects:

[0122] 1. By utilizing a composite optical path design, we simultaneously detected parathyroid glands and their blood supply data, completing the detection of crucial parameters for thyroid surgery on the same device. Existing methods can detect parathyroid glands but cannot simultaneously detect blood supply, making it difficult to quantitatively determine subsequent parathyroid tissue manipulation in clinical practice.

[0123] 2. This invention enables rapid and accurate intraoperative detection of the parathyroid glands, confirming their location within seconds, typically in less than 10 seconds, with an accuracy exceeding 90%. It also allows for repeatable multi-point procedures.

[0124] 3. This invention has a means of real-time blood oxygen detection, which can complete the detection of blood oxygen within half a minute, and the detection of blood oxygen does not interfere with the normal surgical procedure.

[0125] 4. This product uses a fiber optic probe for close-range detection, which can isolate ambient light interference and has a higher accuracy rate compared to the image-based judgment of traditional cameras.

[0126] 5. This product is small in size and powered by batteries, enabling it to perform functions that were previously only available in larger equipment, making it more convenient for clinical operation.

[0127] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the invention should be included within the protection scope of the invention. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A hand-held parathyroid gland monitoring device, characterized by, It includes a housing and an optical fiber module. The housing contains a laser emission module, a collimating optical path module, a filtering optical path module, a photoelectric conversion module, and a power supply module (4). The optical fiber module includes an optical fiber sleeve (1) and several optical fibers; The housing is connected to the optical fiber sleeve (1). One end of several optical fibers is coupled to the laser emitting module through an optical fiber coupler (6), and the other end passes through the optical fiber sleeve (1). The fiber optic coupler (6) is provided with a blood oxygen optical path fiber optic connection point (10), a blood oxygen optical receiving optical path fiber optic connection point (11), and a laser emitting fiber optic connection point (12). The blood oxygen optical fiber connection point (10) is equipped with a blood oxygen optical emission tube (15); The blood oxygen light receiving optical fiber connection point (11) is equipped with a blood oxygen light receiving tube (14). The laser emitting fiber connection point (12) is equipped with a laser emitting tube (13); Several of the optical fibers connect the optical fiber coupler (6), the collimating optical path module, and the filtering optical path module; The housing is provided with an adjustment and mounting assembly (7), and the collimation optical path module and the filter optical path module are installed in the adjustment and mounting assembly (7); The adjustment mounting assembly (7) includes an adjustment sleeve (20) and an adjustment structure (21); The adjusting structure (21) slides within the adjusting sleeve (20); One end of the adjustment structure (21) is connected to several optical fibers passing through the optical fiber coupler (6), and the collimation optical path module is installed inside the other end. The filter optical path module is installed inside one end of the regulating sleeve (20) near the regulating structure (21), and the photoelectric conversion module is installed at the other end.

2. The handheld parathyroid monitoring device according to claim 1, characterized in that, The optical fiber module includes a first optical fiber (16), a second optical fiber (17), a third optical fiber (18), and a fourth optical fiber (19). The first optical fiber (16) is connected to the laser emitting tube (13); The second optical fiber (17) is connected to the collimating optical path module; The third optical fiber (18) is connected to the blood oxygen light emitting tube (15). The fourth optical fiber (19) is connected to the blood oxygen light receiving tube (14). The first optical fiber (16) and the second optical fiber (17) form the first optical path; The third optical fiber (18) and the fourth optical fiber (19) form the second optical path.

3. The handheld parathyroid monitoring device according to claim 1, characterized in that, The collimating optical path module includes a collimating lens (22).

4. The handheld parathyroid monitoring device according to claim 1, characterized in that, The optical filtering module includes a notch filter (23) and a bandpass filter (24).

5. The handheld parathyroid monitoring device according to claim 1, characterized in that, The photoelectric conversion module includes a photodiode (25) and a connecting circuit; The photodiode (25) is installed inside the adjustment structure (21).

6. The handheld parathyroid monitoring device according to claim 1, characterized in that, The power supply module (4) includes a battery and a protection circuit.

7. The handheld parathyroid monitoring device according to claim 1, characterized in that, It also includes the main control module; The main control module includes a main control circuit board, on which are respectively provided the interfaces for the laser emission module, the collimating optical path module, the filtering optical path module and the photoelectric conversion module.

8. The handheld parathyroid monitoring device according to claim 7, characterized in that, It also includes a user instruction module; The user instruction module includes a display and an alarm; The display and the alarm are respectively connected to the main control circuit board.

9. The handheld parathyroid monitoring device according to claim 1, characterized in that, The housing has an opening at one end away from the optical fiber module, and a snap-fit ​​cover (9) is provided at the opening. The inner side of the snap-fit ​​cover (9) is provided with a wire harness fixing component (5).

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