Transducer assembly for a blood gas analyzer, ultrasound device, and blood gas analyzer

Abstract

The application discloses a transducer assembly, an ultrasonic device and a blood gas analyzer for the blood gas analyzer, and relates to the technical field of biomedical detection. The blood gas analyzer comprises a blood gas measurement module and a blood oxygen measurement module, and the blood oxygen measurement module comprises the transducer assembly. The transducer assembly comprises an ultrasonic transducer, an optical fiber and a limiting sleeve. The ultrasonic transducer has a threading channel. The optical fiber has a light receiving end, a light output end and a light guide section between the light receiving end and the light output end. The light output end is adapted to be connected with a spectrometer, and the light receiving end is used for receiving probe light passing through the sample container. The limiting sleeve is sleeved on the outer periphery of the light receiving end and part or all of the light guide section and is inserted into the threading channel. The limiting sleeve is used for limiting the axial movement of the light receiving end along the optical fiber. The application improves the structure of the optical fiber, reduces the deviation or stress damage of the optical fiber during the movement of the transducer, and effectively prolongs the service life of the optical fiber.

Description

Technical Field

[0001] This application relates to the field of biomedical detection technology, and in particular to a transducer assembly, an ultrasonic device, and a blood gas analyzer for use in a blood gas analyzer. Background Technology

[0002] A blood gas analyzer is a medical device that uses electrodes to react electrochemically with a blood sample, converting the chemical components in the blood into electrical signals to quickly measure the blood's pH, oxygen partial pressure, carbon dioxide partial pressure, and electrolyte concentration. Its core function is to assess respiratory function and acid-base balance. Blood gases refer to the O2 and CO2 gases in the blood. Originally, a blood gas analyzer was an instrument for measuring O2 and CO2 in blood, but it can also simultaneously measure the blood's pH value. In its development, blood gas analyzers have gradually integrated the function of detecting blood oxygen, electrolytes, and metabolites.

[0003] Blood gas analyzers in some related technologies include luminescent devices, ultrasonic devices, and spectrometers. The ultrasonic device applies ultrasound waves to the sample container to break up the blood cells within. The luminescent device emits probe light onto the sample container; this light passes through the container and is emitted to the ultrasonic device, where it is received by an optical fiber and then transmitted to the spectrometer for spectral analysis.

[0004] However, one end of the optical fiber is located inside the transducer assembly of the ultrasonic device. If the ultrasonic device needs to be moved during use, it will inevitably cause the optical fiber to move as well, which will lead to the optical fiber being misaligned or damaged by stress inside the transducer, affecting the service life of the optical fiber. Utility Model Content

[0005] The main objective of this application is to provide a transducer assembly, an ultrasound device, and a blood gas analyzer for use in a blood gas analyzer, with the aim of preventing optical fibers from shifting or being damaged by stress within the transducer assembly, thereby improving the service life of the optical fibers.

[0006] To achieve the above objectives, this application proposes a transducer assembly for a blood gas analyzer, the blood gas analyzer including a blood gas measurement module and a blood oxygen measurement module, the blood gas measurement module being configured to perform blood gas detection on an input sample to obtain a blood gas signal, and the blood oxygen measurement module including the transducer assembly; The transducer assembly includes: An ultrasonic transducer having a wire channel is provided, the ultrasonic transducer being able to contact the sample container of the blood gas analyzer and emit ultrasonic waves toward the sample container. An optical fiber having a light receiving end, a light output end, and a light guiding section located between the light receiving end and the light output end, the light output end being adapted to be connected to a spectrometer, and the light receiving end being used to receive probe light passing through the sample container; and A limiting sleeve is provided on the outer periphery of the optical receiving end and part or all of the light guiding segment. The limiting sleeve is inserted into the wire passage and is used to restrict the optical receiving end from moving along the axial direction of the optical fiber.

[0007] In some embodiments, the optical fiber further includes a receiving section connected to the light guide section, the light receiving end being located at one end of the receiving section opposite to the light guide section, and the radial dimension of the receiving section being larger than the radial dimension of the light guide section; the limiting sleeve includes a first protective tube and a second protective tube connected to the first protective tube, the first protective tube being sleeved on the outer periphery of the receiving section, the receiving section being disposed inside the first protective tube, the second protective tube being sleeved on the outer periphery of the portion of the light guide section connected to the receiving section, and the second protective tube being used to confine the light receiving end within the first protective tube.

[0008] In some embodiments, the second protective tube is provided with a clearance channel extending along its length, the clearance channel penetrating the entire sidewall of the second protective tube, the width of the clearance channel being greater than the radial dimension of the light guide segment, the clearance channel being used to allow the light guide segment to enter the second protective tube during assembly.

[0009] In some embodiments, the end of the ultrasonic transducer has a light-inlet channel communicating with the wire-passing channel, and the end face of the first protective tube facing the light-receiving end has a light-transmitting channel communicating with the light-inlet channel, and the radial dimension of the light-transmitting channel is smaller than the radial dimension of the light-receiving end, so as to confine the optical fiber within the first protective tube.

[0010] In some embodiments, the transducer assembly further includes an optical fiber buffer that fills the space between the inner wall of the second protective tube and the outer wall of the light guide segment. The optical fiber buffer is used to restrict the radial movement of the light guide segment and absorb impact forces.

[0011] In some embodiments, the transducer assembly further includes a locking member, the transducer assembly having a locking hole communicating with the wiring channel, the locking member being inserted into the locking hole and pressed against a limiting sleeve of the optical fiber, the locking member being used to restrict the movement of the optical fiber in its radial direction.

[0012] In some embodiments, the threading channel extends along a first direction, and the locking hole extends along a second direction; wherein, the first direction is the length direction of the ultrasonic transducer, and the second direction intersects with the first direction.

[0013] In some embodiments, the ultrasonic transducer includes a vibration source, a first vibrating body, a second vibrating body, and an electrode pair. The electrode pair is electrically connected to the vibration source and is used to connect to an external circuit. The first vibrating body and the second vibrating body are respectively disposed on both sides of the vibration source and fixed by bolts. The end face of the first vibrating body is provided with a light-gathering channel and is adapted to contact the sample container during operation. The light-receiving end of the optical fiber faces the light-gathering channel.

[0014] In some embodiments, both the first protective tube and the second protective tube are made of metal or plastic.

[0015] In some embodiments, the blood gas analyzer includes a blood gas measurement module and a blood oxygen measurement module, the blood gas measurement module being configured to perform blood gas detection on an input sample to obtain a blood gas signal, and the blood oxygen measurement module including the transducer assembly; The optical fiber further includes a receiving section connected to the light guide section. The optical receiving end is located at the end of the receiving section opposite to the light guide section, and the radial dimension of the receiving section is larger than the radial dimension of the light guide section. The limiting sleeve includes a first protective tube and a second protective tube connected to the first protective tube. The first protective tube is sleeved on the outer periphery of the receiving section, and the receiving section is disposed inside the first protective tube. The second protective tube is sleeved on the outer periphery of the portion of the light guide section connected to the receiving section, and the second protective tube is used to confine the optical receiving end within the first protective tube. The second protective tube has a clearance channel extending along its length, which penetrates the entire sidewall of the second protective tube. The width of the clearance channel is greater than the radial dimension of the light guide segment. The clearance channel is used to allow the light guide segment to enter the second protective tube during assembly. The end of the ultrasonic transducer has a light inlet channel communicating with the wire-passing channel. The end face of the first protective tube facing the light receiving end has a light transmission channel communicating with the light inlet channel. The radial dimension of the light transmission channel is smaller than the radial dimension of the light receiving end, so as to confine the optical fiber within the first protective tube. The transducer assembly further includes an optical fiber buffer, which is filled between the inner wall of the second protective tube and the outer wall of the light guide section. The optical fiber buffer is made of cushioning cotton and is used to restrict the radial movement of the light guide section and absorb impact force. The transducer assembly also includes a locking member, which has a locking hole communicating with the wiring channel. The locking member is inserted into the locking hole and pressed against the limiting sleeve of the optical fiber. The locking member is used to restrict the radial movement of the optical fiber. The wiring channel extends along a first direction, and the locking hole extends along a second direction. The first direction is the length direction of the ultrasonic transducer, and the second direction intersects with the first direction. The ultrasonic transducer includes a vibration source, a first vibrating body, a second vibrating body, and an electrode pair. The electrode pair is electrically connected to the vibration source and is used to connect to an external circuit. The first vibrating body and the second vibrating body are respectively disposed on both sides of the vibration source and fixed by bolts. The end face of the first vibrating body is provided with the light-gathering channel and is adapted to contact the sample container during operation. The light-gathering channel is connected to the optical receiving end of the optical fiber.

[0016] To achieve the above objectives, this application proposes an ultrasonic device, comprising: Ultrasonic mounting brackets, suitable for movement driven by external force; and The transducer assembly for a blood gas analyzer as described above is disposed on the ultrasound mounting bracket; The transducer assembly includes: An ultrasonic transducer having a wire channel is provided, the ultrasonic transducer being able to contact the sample container of the blood gas analyzer and emit ultrasonic waves toward the sample container. An optical fiber having a light receiving end, a light output end, and a light guiding section located between the light receiving end and the light output end, the light output end being adapted to be connected to a spectrometer, and the light receiving end being used to receive probe light passing through the sample container; and A limiting sleeve is provided on the outer periphery of the optical receiving end and part or all of the light guiding segment. The limiting sleeve is inserted into the wire passage and is used to restrict the optical receiving end from moving along the axial direction of the optical fiber.

[0017] To achieve the above objectives, this application also proposes a blood gas analyzer, comprising: A blood gas measurement module, configured to perform blood gas analysis on an input sample to obtain blood gas parameter signals; A reagent kit assembly, comprising a reagent kit and a sample container connected to the reagent kit; and The blood oxygen measurement module includes a light-emitting device, a spectrometer, and an ultrasonic device for a blood gas analyzer as described above; the light-emitting device is used to emit probe light into the sample container, and the optical fiber in the ultrasonic device is used to receive the probe light passing through the sample container.

[0018] In the technical solution of this application, the transducer assembly includes an ultrasonic transducer, an optical fiber, and a limiting sleeve. The ultrasonic transducer has a threaded channel, enabling it to contact the sample container of the blood gas analyzer and emit ultrasonic waves toward the sample container. The optical fiber has a light receiving end, a light output end, and a light guiding section located between the light receiving end and the light output end. The light output end is adapted to connect to a spectrometer, and the light receiving end is used to receive the probe light passing through the sample container. The limiting sleeve is fitted around the outer periphery of the light receiving end and part or all of the light guiding section and inserted into the threaded channel. The limiting sleeve is used to restrict the axial movement of the light receiving end along the optical fiber body. It can be understood that this application improves the optical fiber structure of the transducer assembly. By setting a limiting sleeve on the optical fiber body, it reduces the displacement or stress damage to the optical fiber during the movement of the ultrasonic transducer, effectively improving the service life of the optical fiber. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the ultrasonic device and spectrometer in one embodiment of the blood gas analyzer of this application; Figure 2 This is a schematic diagram of the structure of one embodiment of the transducer assembly of this application; Figure 3 This is a cross-sectional view of an embodiment of the transducer assembly of this application; Figure 4 This is an exploded view of an embodiment of the transducer assembly of this application; Figure 5 This is an exploded view of the optical fiber in one embodiment of the transducer assembly of this application; Figure 6 This is a schematic diagram of the overall structure of the blood gas analyzer in one embodiment of the present application; Figure 7 This is a schematic diagram of the connection structure of the main unit support, reagent kit assembly, and drive actuator in one embodiment of the blood gas analyzer of this application; Figure 8This is a schematic diagram showing the positional relationship between the ultrasonic device and the light-emitting device of the blood oxygen measurement module and the sample container in a test state in one embodiment of the blood gas analyzer of this application. Figure 9 This is a schematic diagram showing the positional relationship between the ultrasonic device and the light-emitting device of the blood oxygen measurement module and the sample container in an embodiment of the blood gas analyzer of this application when they are in a separated state.

[0021] Explanation of icon numbers: 11. Main unit bracket; 12. Base; 13. Main unit front shell; 131. Display screen; 132. Test card slot; 133. Sampling needle port; 134. Barcode scanning port; 14. Main unit rear shell; 2. Drive actuator; 3. Ultrasonic device; 31. Ultrasonic mounting bracket; 32. Ultrasonic transducer; 321. Wiring channel; 322. Locking hole; 324. Vibration source; 325. First vibrating body; 325a. Light inlet channel; 326. Second vibrating body; 3 27. Electrode pair; 33. Optical fiber; 331. Optical fiber body; 331a. Optical receiving end; 331b. Optical output end; 331c. Light guide section; 331d. Receiving section; 332. Limiting sleeve; 3321. First protective tube; 3321a. Light transmission channel; 3322. Second protective tube; 3322a. Clearance channel; 4. Light emission device; 5. Reagent kit components; 51. Reagent kit; 52. Sample container; 53. Test card mounting cavity; 6. Spectrometer.

[0022] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0024] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0025] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. If the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. The technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0027] A blood gas analyzer is a medical device that uses electrodes to react electrochemically with a blood sample, converting the chemical components in the blood into electrical signals to quickly measure the blood's pH, oxygen partial pressure, carbon dioxide partial pressure, and electrolyte concentration. Its core function is to assess respiratory function and acid-base balance. Blood gases refer to the O2 and CO2 gases in the blood. Originally, a blood gas analyzer was an instrument for measuring O2 and CO2 in blood, but it can also simultaneously measure the blood's pH value. In its development, blood gas analyzers have gradually integrated the function of detecting blood oxygen, electrolytes, and metabolites.

[0028] Blood gas analyzers in related technologies include luminescent devices, ultrasonic devices, and spectrometers. The ultrasonic device applies ultrasonic waves to the sample container to break up blood cells within. The luminescent device emits probe light onto the sample container; this light passes through the container and is emitted to the ultrasonic device, where it is received by an optical fiber and transmitted to the spectrometer for spectral analysis.

[0029] However, one end of the optical fiber is located inside the transducer assembly of the ultrasonic device. When the ultrasonic device is in use, it needs to move between the working position and the separation position, which will inevitably cause the optical fiber to move with it. This will cause the optical fiber to be misaligned or damaged by stress inside the transducer, affecting the service life of the optical fiber.

[0030] In this regard, this application proposes a transducer assembly for use in a blood gas analyzer.

[0031] Reference Figures 1 to 5 In some embodiments of this application, the blood gas analyzer includes a blood gas measurement module and a blood oxygen measurement module. The blood gas measurement module is configured to perform blood gas detection on the input sample to obtain a blood gas signal. The blood oxygen measurement module includes a transducer assembly. The transducer assembly includes an ultrasonic transducer 32, an optical fiber 33, and a limiting sleeve 332. The ultrasonic transducer 32 is provided with a wire channel 321, and the ultrasonic transducer 32 can contact the sample container of the blood gas analyzer and emit ultrasonic waves toward the sample container. The main function of the ultrasonic transducer 32 is to apply ultrasonic waves to the sample container to break up the blood cells in the sample container. The optical fiber 33 includes an optical fiber body 331, which has a light receiving end 331a, a light output end 331b, and a light guide section 331c located between the light receiving end 331a and the light output end 331b. The light output end 331b is adapted to be connected to a spectrometer 6, and the light receiving end 331a is used to receive the probe light passing through the sample container. The limiting sleeve 332 is fitted around the outer periphery of the optical receiver 331a and part or all of the light guide section 331c and is located inside the cable passage 321. The limiting sleeve 332 is used to restrict the optical receiver 331a from moving along the axial direction of the optical fiber body 331.

[0032] During operation, the probe light emitted by the light-emitting device of the blood gas analyzer passes through the sample container and is emitted to the transducer assembly. It is received by the optical receiver 331a of the optical fiber 33 integrated in the transducer assembly in this embodiment, and then the probe light is transmitted to the spectrometer 6 by the light guide section 331c and the light output end 331b.

[0033] In this embodiment, the optical fiber body 331 can be a single-mode optical fiber or a dual-mode optical fiber, etc., and is not limited here.

[0034] In this embodiment, the limiting sleeve 332 can be made of metal or plastic, preferably stainless steel, but this is not limited here.

[0035] It is understood that this application improves the structure of the optical fiber 33 in the transducer assembly. By setting a limiting sleeve 332 on the optical fiber body 331, the displacement or stress damage of the optical fiber 33 during the movement of the ultrasonic transducer 32 is reduced, effectively improving the service life of the optical fiber 33.

[0036] To further reduce the offset or stress damage of optical fiber 33, in some embodiments, reference is made to... Figures 3 to 5The optical fiber body 331 may further include a receiving section 331d connected to the light guide section 331c. The optical receiving end 331a is located at the end of the receiving section 331d opposite to the light guide section 331c, and the radial dimension of the receiving section 331d is larger than the radial dimension of the light guide section 331c. The limiting sleeve 332 includes a first protective tube 3321 and a second protective tube 3322 connected to the first protective tube 3321. The first protective tube 3321 is sleeved on the outer periphery of the receiving section 331d, and the receiving section 331d is disposed inside the first protective tube 3321. The second protective tube 3322 is sleeved on the outer periphery of the portion of the light guide section 331c connected to the receiving section 331d, and the second protective tube 3322 is used to confine the optical receiving end 331a within the first protective tube 3321. Therefore, the receiving segment 331d cannot enter the second protective tube 3322, and the second protective tube 3322 can confine the receiving segment 331d inside the first protective tube 3321, thereby preventing the optical fiber 33 from shifting axially. This structure can better adapt to the structure of the receiving segment 331d of the optical fiber body 331, thereby improving the protection and limiting effect on the optical fiber 33.

[0037] Since the light output end 331b of the light guiding section 331c of the optical fiber 33 is usually pre-fixed to the spectrometer 6, and the cross-sectional size of the receiving section 331d of the optical fiber 33 is relatively large, how to better install the optical fiber 33 into the limiting sleeve 332 also needs to be considered and solved. Further, mainly referring to... Figure 5 The second protective tube 3322 is provided with a clearance channel 3322a extending along its length. The clearance channel 3322a penetrates the entire sidewall of the second protective tube 3322 along its axial direction. The width of the clearance channel 3322a is greater than the radial dimension of the light guide segment 331c. The clearance channel 3322a is used to allow the light guide segment 331c to enter into the second protective tube 3322 during assembly. This helps to further improve the ease of assembly between the limiting sleeve 332 and the optical fiber body 331.

[0038] During assembly, the receiving segment 331d of the optical fiber 33 can be first assembled into the first protective tube 3321, and the light guiding segment 331c enters the second protective tube 3322 through the clearance channel 3322a on the side of the limiting sleeve 332. Then, the second protective tube 3322 is fixedly connected to the first protective tube 3321. In this embodiment, the second protective tube 3322 and the first protective tube 3321 can be connected by threads. The second protective tube 3322 can press the receiving segment 331d of the optical fiber 33 against the inner wall of the first protective tube 3321, so that the receiving segment 331d cannot move.

[0039] To enable the optical fiber 33 to receive as much probe light as possible and improve the accuracy of spectral analysis, in some embodiments, reference is made to... Figure 5The first protective tube 3321 has a light-transmitting channel 3321a on its end face facing the light receiving end 331a, and the radial dimension of the light-transmitting channel 3321a is smaller than the radial dimension of the light receiving end 331a, so as to confine the optical fiber 33 inside the first protective tube 3321. The end of the ultrasonic transducer 32 has a light-entry channel 325a, and the light-transmitting channel 3321a is connected to the light-entry channel 325a. The light-transmitting channel 3321a and the light-entry channel 325a can be coaxially arranged to ensure that the light is transmitted to the spectrometer 6 more effectively.

[0040] In this embodiment, the radial dimension of the light-transmitting channel 3321a is smaller than the radial dimension of the threading channel 321. This arrangement allows for more efficient reception of light entering through the light-entry channel 325a, which helps improve the accuracy of blood oxygen detection.

[0041] In some implementations, refer to Figures 2 to 5 The transducer assembly may also include an optical fiber buffer (not shown in the figure), which is filled between the inner wall of the second protective tube 3322 and the outer wall of the light guide section 331c. The optical fiber buffer is used to limit the radial movement of the light guide section 331c and absorb impact forces. This arrangement can further reduce the displacement of the optical fiber 33 or the degree of stress damage during the movement of the ultrasonic transducer 32, and can significantly improve the service life of the optical fiber 33.

[0042] In this embodiment, the fiber optic buffer can be made of buffering material such as buffer cotton, which is filled between the outer peripheral wall of the light guide segment 331c and the inner wall of the second protective tube 3322. On the one hand, it can fix the light guide segment 331c to a certain extent and reduce the movement of the light guide segment 331c in the second protective tube 3322; on the other hand, it can also play a buffering role, reducing the friction between the light guide segment 331c and the second protective tube 3322 and avoiding wear of the optical fiber 33.

[0043] In some implementations, refer to Figures 2 to 4 The transducer assembly may also include a locking element (not shown in the figure). The transducer assembly has a locking hole 322 communicating with the wiring channel 321. The locking element is inserted into the locking hole 322 and pressed against the limiting sleeve 332 of the optical fiber 33. The locking element is used to restrict the movement of the optical fiber 33 along its radial direction. This can prevent the optical fiber 33 from rotating relative to the ultrasonic transducer 32, further reducing the offset of the optical fiber 33 or the degree of stress damage, and further improving the service life of the optical fiber 33. In this embodiment, the wiring channel 321 extends along a first direction, and the locking hole 322 extends along a second direction; wherein, the first direction may be the length direction of the ultrasonic transducer 32, and the second direction intersects with the first direction.

[0044] In this embodiment, the locking component, combined with the aforementioned limiting sleeve 332 structure, prevents the optical fiber 33 from moving along the axial direction or rotating around the axial direction, thereby achieving complete locking of the optical fiber 33. Furthermore, since the locking component acts on the limiting sleeve 332, the optical fiber body 331 will not be directly subjected to force and thus will not be damaged, which is beneficial to further improving the service life of the optical fiber 33.

[0045] In some implementations, refer to Figures 1 to 4 The ultrasonic transducer 32 may include a vibration source 324, a first vibrator 325, a second vibrator 326, and an electrode pair 327. The electrode pair 327 is electrically connected to the vibration source 324 and is used to connect to an external circuit. The first vibrator 325 and the second vibrator 326 are respectively disposed on both sides of the vibration source 324 and fixed with bolts. The end face of the first vibrator 325 is provided with the aforementioned light inlet channel 325a, which is suitable for contacting the sample container during operation. The light inlet channel 325a is connected to the light receiving end 331a of the optical fiber 33. In this way, while realizing the ultrasonic function, it also helps to further expand the light receiving range of the optical fiber 33.

[0046] Bolts are primarily used to fix the first vibrator 325, the second vibrator 326, and the vibration source 324 axially. Bolts are generally made of metal. To prevent short circuits between electrodes caused by the bolts, insulating washers are also provided in this embodiment to insulate the bolts and electrodes.

[0047] In this embodiment, the vibration source 324 can be a piezoelectric ceramic, and there can be multiple piezoelectric ceramics; in this embodiment, there are two. The electrode pair 327 is mainly used to connect to the external circuit and apply an electric field to the piezoelectric ceramic to make it perform axial extension and contraction. The first vibrator 325 and the second vibrator 326 are respectively disposed on both sides of the vibration source 324. The first vibrator 325 and the second vibrator 326 are made of stainless steel or other metal materials, and their main function is to adjust the overall vibration frequency of the ultrasonic transducer 32, enhance vibration stability, and improve energy conversion efficiency. The end face of the first vibrator 325 facing away from the second vibrator 326 is used to contact the sample container during operation.

[0048] During operation, the ultrasonic transducer 32 as a whole will generate axial vibration, and the high-frequency vibration of the end face of the first vibrator 325 is used to emit high-frequency sound waves toward the sample container.

[0049] This application also proposes an ultrasonic device, which includes a transducer assembly. The specific structure of the transducer assembly is as described in the above embodiments. Since the ultrasonic device proposed in this application includes all schemes of all embodiments of the transducer assembly described above, it has at least the same technical effects as the transducer assembly described above, which will not be described in detail here.

[0050] Reference Figure 1 In some embodiments of this application, the ultrasonic device further includes an ultrasonic mounting bracket 31; the ultrasonic mounting bracket 31 is adapted to be driven by an external force to move; and a transducer assembly is disposed on the ultrasonic mounting bracket 31.

[0051] This application also proposes a blood gas analyzer, which includes an ultrasound device. The specific structure of the ultrasound device is as described in the above embodiments. Since the blood gas analyzer proposed in this application includes all the solutions of all embodiments of the ultrasound device described above, it has at least the same technical effects as the ultrasound device described above, which will not be described in detail here.

[0052] Reference Figure 1 In some embodiments of this application, the blood gas analyzer includes a blood gas measurement module, a reagent kit assembly, and a blood oxygenation measurement module. The blood gas measurement module is configured to perform blood gas analysis on an input sample to obtain blood gas parameter signals. The reagent kit assembly includes a reagent kit and a sample container, with the sample container connected to the reagent kit. The blood oxygenation measurement module includes a light-emitting device, a spectrometer, and the aforementioned ultrasonic device. The light-emitting device is used to emit probe light into the sample container. The transducer of the ultrasonic device is used to emit ultrasonic waves into the sample container to break up blood cells in the sample. The optical fiber 33 of the ultrasonic device is used to receive the probe light passing through the sample container and transmit it to the spectrometer 6. The spectrometer 6 is mounted on the ultrasonic mounting bracket 31 and connected to the optical fiber 33 of the transducer assembly.

[0053] It is understood that the spectrometer 6 is used to receive the optical signal transmitted by the optical fiber 33, perform spectral analysis on it, and convert it into an electrical signal. Blood oxygenation measurement refers to measuring indicators such as blood oxygen saturation in a blood sample. In this embodiment, blood oxygenation is measured using spectrophotometry; the detection process includes: firstly, breaking up blood cells in the blood sample with ultrasound to release hemoglobin, and then emitting detection light onto the blood sample. Different oxygen contents and different types of hemoglobin absorb light of different wavelengths differently, based on which the proportion of various hemoglobins can be calculated.

[0054] Figure 6 This is a schematic diagram of the overall structure of the blood gas analyzer in the embodiments of this application. Figure 7 This is a schematic diagram of the connection structure of the host bracket, reagent kit assembly and drive actuator 2 in an embodiment of this application. Figure 8 This diagram illustrates the positional relationship between the ultrasound device 3 and the light-emitting device 4 of the blood oxygen measurement module and the sample container 52 when they are in the testing state. Figure 9 This is a schematic diagram showing the positional relationship between the ultrasound device 3 and the light-emitting device 4 of the blood oxygen measurement module and the sample container 52 when they are in a separated state.

[0055] like Figure 6 and Figure 7The blood gas analyzer shown, in some embodiments of this application, includes a main unit housing and a main unit bracket 11 disposed within the main unit housing, a blood gas measurement module (not shown), and a blood oxygen measurement module. The blood gas measurement module is configured to detect the input sample to obtain a blood gas signal, and the blood oxygen measurement module is configured to detect the input sample to obtain a blood oxygen signal.

[0056] In some embodiments, the analyzer host (not shown in the figure) is housed within the main unit casing. The term "analyrical host" in this document can be understood as any major structure in the blood gas analyzer other than the removable consumables and the blood oxygen measurement module. For example, the analyzer host may include a signal processing module, a human-computer interaction module, and a circuit module. The signal processing module converts the acquired electrical signals into clinically interpretable physiological parameters; the human-computer interaction module enables user operation, result viewing, and instrument settings; and the circuit module provides stable power supply and signal transmission for the entire host. The various modules of the analyzer host can be directly or indirectly fixedly mounted on the host bracket 11.

[0057] like Figure 6 and Figure 7 As shown, in some embodiments of this application, the main unit housing includes a base 12 and a front housing 13 and a rear housing 14 connected to the base 12. A main unit bracket 11 is mounted on the base 12. The front housing 13 and the rear housing 14 are connected to form the outer housing of the blood gas analyzer. The main unit bracket 11, the blood gas measurement module, and the blood oxygen measurement module are all located within the space enclosed by the front housing 13 and the rear housing 14. The front housing 13 is equipped with a display screen 131, a test card slot 132, a sampling needle port 133, a barcode scanning port 134, etc. The test card slot 132 is used for inserting a test card assembly, and the sampling needle port 133 is used for inserting a syringe or capillary tube. The test fluid inside the syringe or capillary tube can enter the tubing inside the main unit housing through the sampling needle port 133. The blood gas analyzer also contains various components required to realize the blood gas measurement function and the blood oxygen (blood oxygen saturation) measurement function, such as a power supply, a printer, and a main control board.

[0058] like Figure 7 As shown, in some embodiments of this application, the host bracket 11 has a reagent chamber for storing the reagent kit component 5. The reagent kit component 5 is inserted into the reagent kit chamber as a consumable and can be inserted into or removed from the reagent kit chamber from the reagent kit assembly port on one side of the reagent kit chamber.

[0059] like Figures 7 to 9As shown, in some embodiments of this application, the reagent kit component 5 includes a sample container 52 and a reagent kit 51. The sample container 52 is integrated onto the reagent kit 51 and protrudes from the outer surface of the reagent kit 51. The blood oxygen testing channel inside the sample container 52 is connected to the communicating tubing inside the reagent kit 51. When the reagent kit component 5 is installed into the main unit bracket 11, the sample container 52 is installed together with the reagent kit 51 into the reagent kit chamber inside the main unit bracket 11. This arrangement not only facilitates the integrated replacement of the sample container 52 and the reagent kit 51, but also eliminates the need for additional space outside the main unit bracket 11 for inserting the sample container 52, which is beneficial for the miniaturization design of the main unit bracket 11 and the entire device.

[0060] like Figures 7 to 9 As shown, in some embodiments of this application, the reagent kit 51 is further provided with a test card mounting cavity 53 on its exterior. When the reagent kit 51 is inserted into the reagent kit chamber inside the main unit bracket 11, the test card mounting cavity 53 is exposed from the main unit bracket 11. When the external test card assembly is inserted into the blood gas analyzer, the test card assembly is inserted into the test card mounting cavity 53 and connected to the reagent kit 51, wherein the blood gas testing channel inside the test card assembly can be connected to the communicating tubing inside the reagent kit 51.

[0061] like Figures 7 to 9 As shown, in some embodiments of this application, the blood oxygen measurement module includes an ultrasonic device 3, a light-emitting device 4, and a spectrometer 6. The blood oxygen measurement module includes a mounting bracket installed outside the main unit bracket 11, and the ultrasonic device 3, the light-emitting device 4, and the spectrometer 6 are directly or indirectly mounted on the mounting bracket. The ultrasonic device 3 emits ultrasonic waves to the sample container 52 at the sample container test chamber location, acting on the sample inside the sample container 52. Further, the ultrasonic waves emitted by the ultrasonic device 3 are used to break up blood cells in the sample within the blood oxygen testing channel of the sample container 52, releasing hemoglobin from within the blood cells. The detection light emitted by the light-emitting device 4 can pass through the blood oxygen testing channel of the sample container 52 at the sample container test chamber location. The detection light emitted from the sample container 52 is then received by an optical fiber 33. After receiving the detection light, the optical fiber 33 guides the detection light to the spectrometer 6 connected to the optical fiber 33. The spectrometer 6 analyzes the intensity of the received detection light and converts it into an electrical signal, which is then transmitted to the analyzer main unit. The analyzer main unit analyzes this electrical signal to calculate blood oxygen parameters such as blood oxygen saturation. The analyzer host is also used to output blood oxygen saturation and other blood oxygen parameters of the test solution. The blood gas analyzer shown in this application can simultaneously measure blood gas parameters and blood oxygen parameters of the test solution on a single host device, and can complete the measurement of more parameters of the test solution and output test results, thus having enhanced functionality.

[0062] like Figure 8 and Figure 9As shown, in some embodiments of this application, the sample container 52 has a first side and a second side arranged opposite to each other. The ultrasonic device 3 and the light-emitting device 4 of the blood oxygen measurement module have a testing state and a separation state during movement. When the ultrasonic device 3 and the light-emitting device 4 of the blood oxygen measurement module move to the testing state, the ultrasonic device 3 contacts the first side of the sample container 52, and the light-emitting device 4 contacts the second side of the sample container 52. The ultrasonic device 3 and the light-emitting device 4 can fix the sample container 52 to ensure that the position is basically the same for each test, reducing measurement errors. When the ultrasonic device 3 and the light-emitting device 4 of the blood oxygen measurement module move to the separation state, the ultrasonic device 3 is spaced from the first side of the sample container 52, and the light-emitting device 4 is spaced from the second side of the sample container 52. The sample container 52 will not rub against the ultrasonic device 3 and the light-emitting device 4 during the process of moving in and out, avoiding the risk of damage to the sample container 52. At the same time, the ultrasonic device 3 and the light-emitting device 4 will not hinder the movement of the reagent kit component 5 in and out.

[0063] exist Figure 9 In this system, a three-dimensional coordinate system is established with the width of the mounting bracket as the X-axis, the length of the mounting bracket as the Y-axis, and the height of the mounting bracket as the Z-axis. Figure 9 In the diagram, direction a represents the insertion direction of reagent kit component 5, which is in the same direction as the opposite of the X-axis. The removal direction of reagent kit component 5 is the same as the positive direction of the X-axis. Direction b represents the direction of motion of the ultrasound device 3 moving away from the sample container 52 in a straight line, and direction c represents the direction of motion of the light-emitting device 4 moving away from the sample container 52 in a straight line. Directions c and b are on the same straight line and opposite in direction, and both directions c and b are perpendicular to direction a. The assembly path of reagent kit component 5 includes the insertion path of reagent kit component 5 from the outside into the reagent kit chamber and the removal path of reagent kit component 5 from the reagent kit chamber to the outside. When the blood oxygen measurement module is in the separated state, the ultrasound device 3 and the light-emitting device 4 are located outside the assembly path of reagent kit component 5; when the blood oxygen measurement module is in the testing state, parts of the ultrasound device 3 and the light-emitting device 4 are located within the space defined by the assembly path of reagent kit component 5.

[0064] The above description is merely an optional embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A transducer assembly for a blood gas analyzer, characterized in that, The transducer assembly includes: An ultrasonic transducer having a wire channel is provided, the ultrasonic transducer being able to contact the sample container of the blood gas analyzer and emit ultrasonic waves toward the sample container. An optical fiber having a light receiving end, a light output end, and a light guiding section located between the light receiving end and the light output end, the light output end being adapted to be connected to a spectrometer, and the light receiving end being used to receive probe light passing through the sample container; and A limiting sleeve is provided on the outer periphery of the optical receiving end and part or all of the light guiding segment. The limiting sleeve is inserted into the wire passage and is used to restrict the optical receiving end from moving along the axial direction of the optical fiber.

2. The transducer assembly as claimed in claim 1, characterized in that, The optical fiber includes a receiving section connected to the light guide section. The optical receiving end is located at one end of the receiving section opposite to the light guide section. The radial dimension of the receiving section is larger than the radial dimension of the light guide section. The limiting sleeve includes a first protective tube and a second protective tube connected to the first protective tube. The first protective tube is sleeved on the outer periphery of the receiving section, and the receiving section is disposed inside the first protective tube. The second protective tube is sleeved on the outer periphery of the portion of the light guide section connected to the receiving section, and the second protective tube is used to confine the optical receiving end within the first protective tube.

3. The transducer assembly as claimed in claim 2, characterized in that, The second protective tube is provided with a clearance channel extending along its length, the clearance channel penetrating the entire sidewall of the second protective tube, the width of the clearance channel being greater than the radial dimension of the light guide segment, the clearance channel being used to allow the light guide segment to enter the second protective tube during assembly.

4. The transducer assembly as claimed in claim 2, characterized in that, The end of the ultrasonic transducer has a light inlet channel communicating with the wire-threading channel. The end face of the first protective tube facing the light receiving end has a light transmission channel communicating with the light inlet channel. The radial dimension of the light transmission channel is smaller than the radial dimension of the light receiving end, so as to confine the optical fiber within the first protective tube.

5. The transducer assembly as claimed in claim 2, characterized in that, The transducer assembly further includes an optical fiber buffer, which is filled between the inner wall of the second protective tube and the outer wall of the light guide segment. The optical fiber buffer is used to restrict the radial movement of the light guide segment and absorb impact forces.

6. The transducer assembly according to any one of claims 1 to 5, characterized in that, The transducer assembly further includes a locking member. The transducer assembly has a locking hole communicating with the wire passage. The locking member is inserted into the locking hole and pressed against the limiting sleeve. The locking member is used to restrict the optical fiber from moving radially thereon. The threading channel extends along a first direction, and the locking hole extends along a second direction; wherein, the first direction is the length direction of the ultrasonic transducer, and the second direction intersects with the first direction.

7. The transducer assembly as claimed in claim 6, characterized in that, The ultrasonic transducer includes a vibration source, a first vibrating body, a second vibrating body, and an electrode pair. The electrode pair is electrically connected to the vibration source and is used to connect to an external circuit. The first vibrating body and the second vibrating body are respectively disposed on both sides of the vibration source and fixed by bolts. The end face of the first vibrating body is provided with a light-entry channel and is adapted to contact the sample container during operation. The light-receiving end of the optical fiber faces the light-entry channel.

8. The transducer assembly as claimed in claim 1, characterized in that, The blood gas analyzer includes a blood gas measurement module and a blood oxygen measurement module. The blood gas measurement module is configured to perform blood gas detection on the input sample to obtain a blood gas signal. The blood oxygen measurement module includes the transducer assembly. The optical fiber further includes a receiving section connected to the light guide section. The optical receiving end is located at the end of the receiving section opposite to the light guide section, and the radial dimension of the receiving section is larger than the radial dimension of the light guide section. The limiting sleeve includes a first protective tube and a second protective tube connected to the first protective tube. The first protective tube is sleeved on the outer periphery of the receiving section, and the receiving section is disposed inside the first protective tube. The second protective tube is sleeved on the outer periphery of the portion of the light guide section connected to the receiving section, and the second protective tube is used to confine the optical receiving end within the first protective tube. The second protective tube has a clearance channel extending along its length, which penetrates the entire sidewall of the second protective tube. The width of the clearance channel is greater than the radial dimension of the light guide segment. The clearance channel is used to allow the light guide segment to enter the second protective tube during assembly. The end of the ultrasonic transducer has a light inlet channel communicating with the wire-passing channel. The end face of the first protective tube facing the light receiving end has a light transmission channel communicating with the light inlet channel. The radial dimension of the light transmission channel is smaller than the radial dimension of the light receiving end, so as to confine the optical fiber within the first protective tube. The transducer assembly further includes an optical fiber buffer, which is filled between the inner wall of the second protective tube and the outer wall of the light guide section. The optical fiber buffer is made of cushioning cotton and is used to restrict the radial movement of the light guide section and absorb impact force. The transducer assembly also includes a locking member, which has a locking hole communicating with the wiring channel. The locking member is inserted into the locking hole and pressed against the limiting sleeve of the optical fiber. The locking member is used to restrict the radial movement of the optical fiber. The wiring channel extends along a first direction, and the locking hole extends along a second direction. The first direction is the length direction of the ultrasonic transducer, and the second direction intersects with the first direction. The ultrasonic transducer includes a vibration source, a first vibrating body, a second vibrating body, and an electrode pair. The electrode pair is electrically connected to the vibration source and is used to connect to an external circuit. The first vibrating body and the second vibrating body are respectively disposed on both sides of the vibration source and fixed by bolts. The end face of the first vibrating body is provided with the light-gathering channel and is adapted to contact the sample container during operation. The light-gathering channel is connected to the optical receiving end of the optical fiber.

9. An ultrasonic device for a blood gas analyzer, characterized in that, include: Ultrasonic mounting bracket, suitable for movement driven by external force; as well as The transducer assembly for a blood gas analyzer as described in any one of claims 1 to 8, wherein the transducer assembly is disposed on the ultrasound mounting bracket.

10. A blood gas analyzer, characterized in that, include: A blood gas measurement module, configured to perform blood gas analysis on an input sample to obtain blood gas parameter signals; A reagent kit assembly, the reagent kit assembly including a reagent kit and a sample container, the sample container being connected to the reagent kit; as well as A blood oxygen measurement module, comprising a light-emitting device, a spectrometer, and an ultrasonic device for a blood gas analyzer as described in claim 9; the light-emitting device is used to emit probe light toward the sample container, and the optical fiber in the ultrasonic device is used to receive the probe light passing through the sample container.

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