Pressure sensor calibration valve for improved zeroing calibration of pressure sensors

Abstract

Examples of the present application provide pressure sensor calibration valves for improving zeroing calibration of pressure sensors. For example, an example pressure sensor calibration valve includes a valve body having a vent port, a rotatable handle connected to a pinion gear positioned in the valve body, and a sealing member connected to a linear rack gear that meshes with the pinion gear. When the rotatable handle is in a sensing position, the sealing member is biased to seal a vent port opening of the vent port. When the rotatable handle is rotated from the sensing position to a venting position, the sealing member is displaced away from the vent port and triggers an electrical signal to initiate zeroing calibration of a pressure sensor.

Description

Background Technology

[0001] The applicant has recognized the many technical challenges and difficulties associated with calibrating pressure sensors. Summary of the Invention

[0002] The various embodiments described herein relate to an example pressure sensor calibration valve. According to various embodiments of this disclosure, an example pressure sensor calibration valve is provided. In some embodiments, the example pressure sensor calibration valve includes: a valve body including a vent port; a rotatable handle connected to a pinion positioned within the valve body; and a sealing member connected to a linear rack meshing with the pinion.

[0003] In some implementations, when the rotatable handle is in the sensing position, the sealing element is biased to seal the vent port opening of the vent port.

[0004] In some implementations, rotation of the rotatable handle from the sensing position to the venting position causes displacement of the sealing element away from the venting port opening and triggers an electrical signal that initiates zeroing calibration of the pressure sensor.

[0005] In some implementations, an electrical signal is sent to the pressure sensor.

[0006] In some implementations, an electrical signal is sent to a sensor controller that is electrically coupled to the pressure sensor.

[0007] In some implementations, the sealing element is biased by a leaf spring to seal the vent opening of the vent port.

[0008] In some embodiments, the leaf spring is coupled to a spring-actuated switch. In some embodiments, rotation of the rotatable handle from the sensing position to the venting position activates the spring-actuated switch.

[0009] In some embodiments, the pressure sensor calibration valve further includes: a metal plate fixed to the end of a linear rack; and an anisotropic magnetoresistive (AMR) sensor fixed in the valve body.

[0010] In some implementations, rotation of the rotatable handle from the sensing position to the ventilating position causes a linear movement of the metal plate, which triggers the AMR sensor to generate an electrical signal.

[0011] In some embodiments, the linear rack includes a plurality of rack teeth. In some embodiments, the pinion includes a plurality of gear teeth. In some embodiments, the plurality of gear teeth mesh with the plurality of rack teeth.

[0012] In some embodiments, rotation of the rotatable handle causes rotation of multiple gear teeth. In some embodiments, rotation of the multiple gear teeth causes linear movement of the linear rack and sealing components.

[0013] In some implementations, the valve body also includes a sensor port and a fluid port.

[0014] In some implementations, the fluid port receives fluid.

[0015] In some implementations, the sensor port is fluidly connected to the pressure sensor.

[0016] In some embodiments, the rotatable handle includes a handle shaft positioned within the valve body. In some embodiments, a pinion is connected to the handle shaft.

[0017] In some embodiments, the handle shaft includes a vent opening, a sensor opening, and a fluid opening. In some embodiments, the vent opening, sensor opening, and fluid opening are fluidly connected to each other.

[0018] In some implementations, when the rotatable handle is in the vented position, the sensor port is fluidly connected to the vent port, and the fluid port is fluidly disconnected from both the sensor port and the vent port.

[0019] In some implementations, when the rotatable handle is in the vented position: the sensor port of the valve body is aligned with the sensor opening of the handle shaft, and the vent port of the valve body is aligned with the vent opening of the handle shaft.

[0020] In some implementations, when the rotatable handle is in the vent position, the fluid port of the valve body is not aligned with the fluid opening of the handle shaft.

[0021] In some implementations, when the rotatable handle is in the sensing position, the sensor port is fluidly connected to the fluid port, and the vent port is fluidly disconnected from both the sensor port and the fluid port.

[0022] In some implementations, when the rotatable handle is in the sensing position: the sensor port of the valve body is aligned with the sensor opening of the handle shaft, and the fluid port of the valve body is aligned with the fluid opening of the handle shaft.

[0023] In some implementations, when the rotatable handle is in the sensing position, the vent port of the valve body is not aligned with the vent opening of the handle shaft.

[0024] The foregoing illustrative description of the invention, as well as other exemplary objects and / or advantages of this disclosure, and the ways in which these objects and / or advantages are achieved, are further explained in the following detailed description and accompanying drawings. Attached Figure Description

[0025] The description of the exemplary embodiments can be read in conjunction with the accompanying drawings. It should be understood that, for the sake of simplicity and clarity, the elements illustrated in the figures are not necessarily drawn to scale unless otherwise described. For example, unless otherwise described, the dimensions of some elements may be exaggerated relative to others. Embodiments incorporating the teachings of this disclosure are shown and described with reference to the accompanying drawings presented herein.

[0026] Figure 1A This is an example isometric view of an example pressure sensor according to some embodiments of this disclosure.

[0027] Figure 1B These are examples of some implementation schemes according to this disclosure. Figure 1A The example cross-sectional view of the example pressure sensor is shown.

[0028] Figure 2A This is an example front view illustrating an example pressure sensor calibration valve according to some embodiments of this disclosure.

[0029] Figure 2B These are examples of some implementation schemes according to this disclosure. Figure 2A The example enlarged view shown is of a pressure sensor calibration valve.

[0030] Figure 2C These are examples of some implementation schemes according to this disclosure. Figure 2A The example shown is a cross-sectional view of an example pressure sensor calibration valve.

[0031] Figure 2D These are examples of some implementation schemes according to this disclosure. Figure 2A The example side view shown is of an example pressure sensor calibration valve.

[0032] Figure 2E These are examples of some implementation schemes according to this disclosure. Figure 2A The example side view shown is of an example pressure sensor calibration valve.

[0033] Figure 2F These are examples of some implementation schemes according to this disclosure. Figure 2A The example side view shown is of an example pressure sensor calibration valve.

[0034] Figure 3A This is an example front view illustrating an example pressure sensor calibration valve according to some embodiments of this disclosure.

[0035] Figure 3B These are examples of some implementation schemes according to this disclosure. Figure 3A The example rear view of the example pressure sensor calibration valve is shown.

[0036] Figure 3CThese are examples of some implementation schemes according to this disclosure. Figure 3A The example enlarged view shown is of a pressure sensor calibration valve.

[0037] Figure 4A This is an example front view illustrating an example pressure sensor calibration valve according to some embodiments of this disclosure.

[0038] Figure 4B These are examples of some implementation schemes according to this disclosure. Figure 4A The example circuit diagram shown is an example of the electronic components of an example pressure sensor calibration valve.

[0039] Figure 5A This is an example front view illustrating an example pressure sensor calibration valve according to some embodiments of this disclosure.

[0040] Figure 5B These are examples of some implementation schemes according to this disclosure. Figure 5B The example circuit diagram shown is an example of the electronic components of an example pressure sensor calibration valve. Detailed Implementation

[0041] Some embodiments of this disclosure will be described more fully below with reference to the accompanying drawings, which illustrate some, but not all, embodiments of this disclosure. In fact, this disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will meet applicable legal requirements. Similar reference numerals always refer to similar elements.

[0042] As used herein, terms such as “front,” “rear,” “top,” etc., in the examples provided below, are used for illustrative purposes to describe the relative positions of certain parts or portions of parts. Furthermore, as will be apparent to those skilled in the art based on this disclosure, the terms “substantially” and “approximately” indicate that the referenced element or associated description is accurate within applicable engineering tolerances.

[0043] As used herein, the term “comprising” means including but not limited to, and should be interpreted in the manner in which it is typically used in the patent context. The use of broader terms such as “comprising,” “including,” and “having” should be understood to provide support for narrower terms such as “consisting of,” “substantially composed of,” and “substantially constituted by.”

[0044] The phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally mean that the specific feature, structure, or characteristic following the phrase may be included in at least one embodiment of this disclosure, and may be included in more than one embodiment of this disclosure (importantly, such phrases do not necessarily refer to the same embodiment).

[0045] As used herein, the terms “example” or “exemplary” mean “serving as an example, instance, or illustration.” Any specific implementation described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other specific implementations.

[0046] If this specification states that a component or feature is "may", "can", "may", "should", "will", "preferably", "possibly", "usually", "optionally", "for example", "often", or "maybe" (or other such language) included or has a characteristic, then the specific component or feature does not need to be included or have that characteristic. Such a component or feature may be optionally included in some embodiments, or it may be excluded.

[0047] In this disclosure, the terms “electrically coupled,” “electrically coupled,” “communicating with,” “electronically communicating with,” or “connection” refer to two or more elements or components connected by wired and / or wireless means such that signals, voltages / currents, data, and / or information can be transmitted to and / or received from these elements or components.

[0048] See now Figure 1A and Figure 1B This illustrates example views associated with example pressure sensors according to some embodiments of the present disclosure. Specifically, Figure 1A This is an example isometric view of an example pressure sensor 100, while Figure 1B This is an example cross-sectional view of an example pressure sensor 100.

[0049] exist Figure 1A and Figure 1B In the example shown, the example pressure sensor 100 includes a sensing die 101 and an application-specific integrated circuit (ASIC) 103.

[0050] In some implementations, the sensing die 101 may be in the form of a pressure sensing die. For example, the sensing die 101 may convert the detected pressure into an electrical output. Examples of sensing dies 101 may include, but are not limited to, strain gauge pressure transducers and / or piezoelectric pressure sensors.

[0051] In some implementations, the ASIC 103 can be programmed to perform one or more functions, such as, but not limited to, signal conditioning, linearization, and / or analog-to-digital conversion.

[0052] exist Figure 1A and Figure 1B In the example shown, both the sensing die 101 and the ASIC 103 are mounted on the circuit board 107. For example, the sensing die 101 and / or the ASIC 103 may be electrically coupled via one or more wire bonds (such as, but not limited to, wire bond 105). In some embodiments, the wire bond 105 may comprise materials such as, but not limited to, gold and / or aluminum.

[0053] According to various embodiments of this disclosure, the example pressure sensor 100 is configured to sense, detect, and / or measure the pressure of a medium (such as, but not limited to, fluids and / or gases). In some embodiments, the example pressure sensor 100 implements one or more features to insulate and protect various electronic components (such as, but not limited to, sensing die 101 and / or ASIC 103) from direct contact with the medium.

[0054] exist Figure 1A and Figure 1B In the example shown, the sensing die 101 is housed within a gel ring 109. In some embodiments, the gel ring 109 is filled with gel 111 (such as, but not limited to, silicone gel) to protect the sensing die 101 from the influence of the medium while transferring pressure from the medium to the sensing die 101.

[0055] In some embodiments, the bottom portion of the gel ring 109 is secured to the circuit board 107 by adhesive 123. In some embodiments, the top portion of the gel ring 109 is secured using a rubber seal 113. In some embodiments, when the example pressure sensor 100 is implemented to detect the pressure of fluid passing through the flow port, the rubber seal 113 is removed, and the gel ring 109 is sealed to the flow port by an adhesive (e.g., by forming an adhesive joint between the gel ring 109 and the flow port).

[0056] In some embodiments, an encapsulant 115 is disposed on top of the ASIC 103 to insulate and protect the ASIC 103. In some embodiments, the encapsulant 115 protects the ASIC 103 from the influence of a dielectric. In some embodiments, the encapsulant 115 may comprise materials such as, but not limited to, polymers, ceramics, and / or glass. In some embodiments, the encapsulant 115 may be replaced by one or more structural elements (such as, but not limited to, protective covers and / or housings) mounted on the circuit board 107 to house and protect the ASIC 103.

[0057] exist Figure 1A and Figure 1BIn the example shown, the sensing die 101 and the ASIC 103 are fixed to the top surface of the circuit board 107. Figure 1B Various components that can be fixed to the bottom surface of the circuit board 107 are further illustrated.

[0058] For example, such as Figure 1B As shown, the example pressure sensor 100 may include a capacitor 117 fixed to the bottom surface of a circuit board 107. In some embodiments, the capacitor 117 may be electrically coupled to a sensing die 101 and provide a voltage signal to the sensing die 101.

[0059] In some embodiments, the example pressure sensor 100 includes a terminal 119 secured to a circuit board 107 by solder 121. In some embodiments, the terminal 119 may be in the form of a clamp configured to secure the example pressure sensor 100 to one or more other components in a pressure sensing system.

[0060] In some embodiments, the top surface of the circuit board 107 (on which the sensing die 101 and ASIC 103 are fixed) is opposite to the bottom surface of the circuit board 107 (on which the capacitor 117 and terminal 119 are fixed).

[0061] Figure 1A and Figure 1B The example pressure sensor 100 shown can be used to sense, detect, and / or measure the pressure of a medium in various environments. For example, the example pressure sensor 100 can be implemented to detect, measure, and / or monitor blood pressure (such as, but not limited to, invasive blood pressure monitoring for surgical, intensive care, and / or other medical settings).

[0062] In examples of invasive blood pressure monitoring, a catheter is inserted into one or more arteries of a patient and fluidly connected to an example pressure sensor 100 via one or more tubing lines. In some embodiments, the tubing is filled with a fluid (such as, but not limited to, a saline solution) that transmits pressure from blood in one or more arteries to the top of the sensing die 101 of the example pressure sensor 100. In such examples, the sensing die 101 of the example pressure sensor 100 can directly measure blood pressure. As blood is pumped through one or more arteries of the patient, the blood exerts pressure on a fluid column in one or more tubing lines, which in turn transmits the pressure to the sensing die 101 of the example pressure sensor 100. Thus, the sensing die 101 of the example pressure sensor 100 can generate an electrical signal (e.g., a voltage signal) proportional to blood pressure.

[0063] However, there are many technical challenges and difficulties associated with pressure sensing, such as those associated with calibrating pressure sensors (such as, but not limited to, zeroing calibration of pressure sensors).

[0064] In this disclosure, the term "zero calibration" refers to the process of calibrating a pressure sensor to establish a baseline (or reference point) for pressure measurement in the output signal. In specific implementations such as, but not limited to, the invasive blood pressure monitoring described above, the baseline point is atmospheric pressure. In such examples, zero calibration of a pressure sensor refers to the process of calibrating the pressure sensor to record an electrical signal from the pressure sensor corresponding to atmospheric pressure. In other words, after zero calibration of the pressure sensor is completed, the pressure sensor should output a reading of zero mmHg when exposed to atmospheric pressure.

[0065] Zero calibration is typically required as part of the manufacturing and / or initial setup of a pressure sensor. After pressure is measured using a pressure sensor, signal drift can occur, and pressure readings may become inaccurate, necessitating zero calibration. In the example of blood pressure monitoring, changes in the relative height between the pressure sensor and the patient's heart due to gravity can cause signal drift in the offset voltage, and even small signal drifts can alter pressure readings. For instance, a change as small as 0.25 inches (6.35 mm) can result in a pressure reading of 114 / 76 mmHg when the actual pressure is 120 / 80 mmHg.

[0066] Therefore, ensuring the most accurate readings from the pressure sensor is possible is the goal of this atmospheric "zeroing" calibration. For blood pressure transducers, the standard ANSI / AAMI BP22 allows drift within ±20 mmHg. In practice, drift needs to be below 1 mmHg over eight hours to avoid having to run the zeroing calibration process too frequently. Continuing with the invasive blood pressure monitoring example, many hospitals require nurses to perform zeroing calibration of the pressure sensor every eight hours for each patient or when nurses change shifts. This zeroing calibration process typically requires the nurse to perform at least five steps, including: rotating the flow valve to shut off fluid flow to the patient in the tubing; removing the sterile ventilation port cap from the tubing, so that the pressure sensor is fluidly connected to atmospheric pressure; selecting the zeroing function on the monitor connected to the pressure sensor to trigger zeroing; reinstalling the sterile ventilation port cap back into the tubing; and rotating the return flow valve to open fluid flow to the patient in the tubing. Such zeroing calibration processes can be very time-consuming. For example, assuming each pressure sensor has an estimated lifespan of 96 hours and each pressure sensor must be zeroed every 8 hours, each pressure sensor needs to be zeroed 12 times during its lifespan. The estimated number of pressure sensors used for invasive blood pressure monitoring is 35,000,000 per year. Based on such an estimate, 420,000,000 zeroing calibrations must be performed annually. Because many zeroing calibration systems and methods require time-consuming steps (e.g., at least five steps as described above), the efficiency of nurses in providing patient care can be negatively impacted.

[0067] Furthermore, many zeroing calibration systems and methods carry a high risk of catastrophic consequences in the event of human error. In the example of invasive blood pressure monitoring, if the zeroing calibration steps for the pressure sensor are not performed sequentially, atmospheric pressure could be applied directly to one or more of the patient's arteries. As another example, if the ventilation port cap is not properly replaced or sterilized, viruses and / or bacteria could enter the patient's body and cause life-threatening infections.

[0068] Various embodiments of this disclosure overcome the technical challenges and difficulties associated with zero calibration of pressure sensors and provide various technical improvements and advantages. For example, various embodiments of this disclosure provide example pressure sensor calibration valves that facilitate and improve zero calibration of pressure sensors.

[0069] In some implementations, instead of a sterile vent cap, an example pressure sensor calibration valve utilizes a sealing element (such as, but not limited to, a silicone ball) biased to seal the vent opening of the vent port, thereby eliminating the need to remove the sterile vent cap before zeroing calibration begins and the need to reinstall the sterile vent port after zeroing calibration is complete.

[0070] In some implementations, the example pressure sensor calibration valve includes a rotatable handle configured to rotate to multiple positions, including a venting position and a sensing position. For example, when the rotatable handle is in the sensing position, fluid in the tubing flows to the pressure sensor, and a sealing element seals the vent port, allowing the pressure sensor to detect, measure, and / or monitor blood pressure. After the rotatable handle is rotated from the sensing position to the venting position, the rotatable handle displaces the sealing element from the vent port, opening the vent port and allowing fluid connection to the pressure sensor, while fluid in the tubing does not flow to the pressure sensor.

[0071] In some implementations, when the rotatable handle is rotated from the sensing position to the ventilating position, an electrical signal is triggered and sent to the pressure sensor (or a monitor, sensor controller, and / or cable connected to the pressure sensor) to initiate zeroing calibration of the pressure sensor.

[0072] As illustrated above, in the example pressure sensor calibration valve according to some embodiments of this disclosure, rotating the rotatable handle not only connects the pressure sensor to atmospheric pressure but also triggers zeroing calibration of the pressure sensor, thereby reducing the steps required for zeroing calibration. For example, in the context of invasive blood pressure monitoring, a nurse may only need to rotate the rotatable handle to the ventilation position, wait one or two seconds, and then rotate the rotatable handle back to the sensing position. Therefore, various embodiments of this disclosure provide technical benefits and advantages, such as, but not limited to, improved efficiency of zeroing calibration of the pressure sensor while reducing the risks associated with performing inappropriate steps for zeroing calibration. Additional details associated with the example embodiments of this disclosure are further described in detail herein.

[0073] See now Figures 2A to 2F An example view is shown associated with an example pressure sensor calibration valve 200 according to some embodiments of the present disclosure.

[0074] Specifically, Figure 2A This is an example front view illustrating an example pressure sensor calibration valve 200. Figure 2B This is an example Figure 2A The example enlarged view of the pressure sensor calibration valve 200 shown is shown. Figure 2C This is an example cross-sectional view illustrating an example pressure sensor calibration valve 200. Figure 2D , Figure 2E and Figure 2F This is an example side view illustrating an example pressure sensor calibration valve 200.

[0075] It should be noted that Figures 2C to 2FSome components are illustrated as transparent or translucent in order to illustrate and highlight various features according to some embodiments of this disclosure. In some embodiments, such components may not be constructed to be transparent or translucent.

[0076] See now Figures 2A to 2B The pressure sensor calibration valve 200 includes a valve body 202 and a rotatable handle 206.

[0077] In some embodiments, the valve body 202 includes a valve cavity. In some embodiments, the valve cavity is in the form of a central chamber in the valve body 202, which acts as a junction connecting the different ports of the valve body 202. In some embodiments, each port of the valve body 202 is connected to the valve cavity and includes an opening connected to the valve cavity. For example, the valve body 202 may include a fluid port 220, a sensor port 218, and a vent port 208. In such an example, the fluid port 220, the sensor port 218, and the vent port 208 are each connected to the valve cavity of the valve body 202.

[0078] In some embodiments, sensor port 218 is located at the bottom portion of valve body 202. In some embodiments, sensor port 218 is fluidly connected to a pressure sensor (such as, but not limited to, those described above). Figure 1A and Figure 1B The example pressure sensor 100 described above. For example, the conduit may include a first end connected to a sensor port 218 of a valve body 202, and a second end connected to a flow port. In such an example, the pressure sensor may be fixed to the flow port by an adhesive as described above, and the conduit provides a fluid passage from the sensor port 218 to the pressure sensor. Combined with at least Figures 2C to 2F Additional details of sensor port 218 are illustrated.

[0079] In some embodiments, the fluid port 220 is located at the top portion of the valve body 202. In some embodiments, the fluid port 220 receives fluid from the top portion of the valve body 202. In the invasive blood pressure monitoring example described above, the fluid port 220 receives a fluid column (such as, but not limited to, a saline solution) in the tubing that transmits pressure from the blood in the patient's body. Combined with at least Figures 2C to 2F Additional details of fluid port 220 are shown.

[0080] In some embodiments, an additional valve (separate from the pressure sensor calibration valve 200) is connected to the top of the fluid port 220 to isolate the pressure sensor from the patient. In such examples, during zeroing calibration, the user can first close the additional valve and then rotate the rotatable handle 206 of the pressure sensor calibration valve 200 to the vent position. After the zeroing calibration is completed, the user can rotate the rotatable handle 206 to the sense position and then open the additional valve. Additional details of the zeroing calibration are described herein.

[0081] In some embodiments, the vent port 208 is located at a side portion of the valve body 202. In some embodiments, when the exemplary pressure sensor calibration valve 200 is not in use, the vent port cap 230 can be fixed to the valve body 202 to cover and protect the vent port 208. In some embodiments, when the exemplary pressure sensor calibration valve 200 is in use, the vent port cap 230 is removed, and the vent port 208 provides a vent port opening that can be exposed to the external environment such that the pressure at the vent port 208 is atmospheric pressure. In some embodiments, when the pressure sensor is not in zeroing calibration, the sealing element can be biased to seal the vent port opening of the vent port 208. In conjunction with at least Figure 2C and Figure 2F Additional details of the vent port 208 and the sealing element are illustrated.

[0082] Referring back to Figure 2A and Figure 2B the example shown, the rotatable handle 206 includes a handle grip portion 232 and a handle shaft 222.

[0083] In some embodiments, the handle grip portion 232 is a part of the rotatable handle 206 that is located outside the valve body 202. In some embodiments, the user can grasp the handle grip portion 232 of the rotatable handle 206 and rotate the rotatable handle 206. In some embodiments, the handle grip portion 232 is shaped to provide comfort to the user's hand when the user's hand grasps the handle grip portion 232. In some embodiments, the handle grip portion 232 includes a non-slip surface such that the user can apply force to rotate the rotatable handle 206 without slipping.

[0084] In some embodiments, the handle shaft 222 is a part of the rotatable handle 206 that is located within the valve body 202. In some embodiments, the handle shaft 222 can be shaped like an elongated cylinder. In some embodiments, the longitudinal axis of the handle shaft 222 is aligned with the rotational axis of the handle grip portion 232. In conjunction with at least Figures 2C to 2F Additional details of the handle shaft 222 are illustrated.

[0085] In some embodiments, the handle shaft 222 is connected to the handle grip 232 and rotates when a force is applied to rotate the handle grip 232 of the rotatable handle 206. In some embodiments, the rotatable handle 206 can be rotated to multiple positions. In some embodiments, the multiple positions of the rotatable handle 206 may include a ventilated position and a sensing position. For example, Figures 2A to 2F An example rotatable handle 206 is shown at the sensing position (e.g., when the handle grip of the rotatable handle is oriented parallel to the vent port of the pressure sensor calibration valve), while Figures 3A to 3C An example of a rotatable handle in the venting position is shown (e.g., when the handle grip of the rotatable handle is oriented parallel to the fluid port of the pressure sensor calibration valve).

[0086] In some implementations, a user can position their hand on the handle grip of the rotatable handle and apply force to rotate the rotatable handle from the sensing position to the ventilating position. For example, the user can apply force to rotate... Figures 2A to 2F The rotating handle shown has a handle grip to switch the rotating handle from the sensing position to the position shown. Figures 3A to 3C The ventilation location is shown.

[0087] In some embodiments, when the rotatable handle is in the sensing position, the sensor port is fluidly connected to the fluid port, and the vent port is fluidly disconnected from both the sensor port and the fluid port. In some embodiments, when the rotatable handle is in the venting position, the sensor port is fluidly connected to the vent port, and the fluid port is fluidly disconnected from both the sensor port and the vent port. Additional details relating to the sensing and venting positions are described herein.

[0088] As described above, the rotatable handle 206 includes a handle shaft 222 positioned within the valve body 202. See now... Figure 2C and Figure 2D An example view of a sample pressure sensor calibration valve 200 is provided, showing the handle shaft 222 in the valve body 202. Specifically, Figure 2C An example cross-sectional rear view of an example pressure sensor calibration valve 200 is shown, which includes a valve body 202, a rotatable handle 206, and a sealing component 204.

[0089] As mentioned above Figures 2A to 2B As described, valve body 202 includes a vent port 208. In Figure 2C In the example shown, the sealing member 204 is positioned in the vent port 208 and is movable according to the position of the rotatable handle 206 to seal and open the vent port opening 248 of the vent port 208.

[0090] In some embodiments, the sealing member 204 may be spherically shaped. In some embodiments, the diameter of the sealing member 204 is larger than the diameter of the vent opening 248 of the vent port 208 to provide a seal to the vent port 208. In some embodiments, the sealing member 204 may comprise materials such as, but not limited to, silicone, elastomers, plastics, polymers, and / or steel. In some embodiments, the sealing member 204 may comprise a silicone ball.

[0091] In some implementations, the example pressure sensor calibration valve 200 includes a leaf spring 234 that biases and presses a sealing member 204 toward a vent port opening 248. When the rotatable handle is in the sensing position, the sealing member 204 is biased by the leaf spring 234 to cover and seal the vent port opening 248 of the vent port 208.

[0092] In some embodiments, the leaf spring 234 includes a first end and a second end. In some embodiments, the first end is opposite to the second end. In some embodiments, the first end of the leaf spring 234 is fixed to the inner surface of the vent port 208 of the valve body 202. In some embodiments, the second end of the leaf spring 234 is fixed to the outer surface of the sealing member 204.

[0093] In some embodiments, the leaf spring 234 is initially compressed during the manufacture of the example pressure sensor calibration valve 200. For example, during the manufacture of the example pressure sensor calibration valve 200, the sealing member 204 is positioned in the vent chamber 246 of the vent port 208. Subsequently, while the leaf spring 234 is compressed, a second end of the leaf spring 234 is secured to the outer surface of the sealing member 204, and a first end of the leaf spring 234 is secured to the inner surface of the vent port 208 of the valve body 202. Because the leaf spring 234 has a natural tendency to return to its uncompressed state, the leaf spring 234 applies force to the sealing member 204 and presses the sealing member 204 against the vent opening 248 of the vent port 208. Thus, the sealing member 204 is biased to seal the vent opening 248 of the vent port 208 of the valve body 202.

[0094] While the foregoing description provides examples of leaf springs that bias the sealing element to seal the vent port, it should be noted that the scope of this disclosure is not limited to the foregoing description. In some examples, the example pressure sensor calibration valve may include one or more additional and / or alternative components (such as, but not limited to, magnetic components) that press and / or bias the sealing element toward the vent port opening of the vent port.

[0095] In some implementations, the sealing member 204 is connected to the linear rack 210. For example, as Figure 2CAs shown, the sealing member 204 is connected to the linear rack 210 via a connecting bridge 236. In some embodiments, the linear rack 210 includes a plurality of rack teeth 214 arranged along the length of the linear rack 210.

[0096] In some implementations, the rotatable handle 206 is connected to the pinion 212. For example, as... Figure 2C As shown, the handle shaft 222 of the rotatable handle 206 includes a pinion 212. In some embodiments, the pinion 212 includes a plurality of gear teeth 216 arranged along the outer circumference of the handle shaft 222.

[0097] In some embodiments, both the linear rack 210 and the pinion 212 are located within the valve body 202. For example, both the linear rack 210 and the pinion 212 may be located within the valve cavity described above.

[0098] In some implementations, pinion 212 meshes with linear rack 210, causing rotatable handle 206 to move from a sensing position (e.g., Figure 2C The rotation of the sealing member 204 to the venting position (as shown) causes the sealing member 204 to move (e.g., the sealing member 204 is displaced away from the venting port opening 248 of the venting port 208).

[0099] For example, such as Figure 2C As shown, rotation of the rotatable handle 206 in the direction indicated by arrow 238 causes rotation of a plurality of gear teeth 216 of the pinion 212 in the direction indicated by arrow 240. In some embodiments, the plurality of gear teeth 216 of the pinion 212 mesh with a plurality of rack teeth 214 of the linear rack 210. Therefore, rotation of the plurality of gear teeth 216 in the direction indicated by arrow 240 causes linear movement of the linear rack 210 in the direction indicated by arrow 242. Continuing in this example, the linear movement of the linear rack 210 in the direction indicated by arrow 242 applies a force to the sealing member 204 in the direction indicated by arrow 244, since the sealing member 204 is connected to the linear rack 210 via connecting bridge 236. In some embodiments, the force applied to the sealing member 204 by the linear rack 210 via connecting bridge 236 compresses the leaf spring 234 and pushes the sealing member 204 away from the vent opening 248 of the vent port 208. Therefore, the vent opening 248 is opened.

[0100] See now Figure 2D An example side view of an example pressure sensor calibration valve 200 is shown.

[0101] like Figure 2DAs shown, the example rotatable handle 206 includes a handle shaft 222 positioned within the valve body 202 of the example pressure sensor calibration valve 200. In some embodiments, the handle shaft 222 includes a handle cavity. In some embodiments, the handle cavity is in the form of a central chamber within the handle shaft 222, which acts as a junction connecting the different openings of the handle shaft 222. In some embodiments, each opening of the handle shaft 222 connects to a handle cavity.

[0102] In this example, the handle shaft 222 of the rotatable handle 206 includes a vent opening 224, a sensor opening 226, and a fluid opening 228. In some embodiments, the vent opening 224, the sensor opening 226, and the fluid opening 228 are fluidly connected to each other through a handle cavity.

[0103] See now Figure 2E and Figure 2F An example side view of an example pressure sensor calibration valve 200 is shown. Specifically, Figure 2E and Figure 2F An example of the flow passage in the example pressure sensor calibration valve 200 is illustrated when the rotatable handle 206 of the example pressure sensor calibration valve 200 is in the sensing position.

[0104] As mentioned above Figures 2A to 2D As described, the valve body 202 of the example pressure sensor calibration valve 200 includes a fluid port 220, a sensor port 218, and a vent port 208. (As described above...) Figure 2D As described, the handle shaft 222 of the rotatable handle 206 includes a vent opening 224, a sensor opening 226, and a fluid opening 228 connected to a handle cavity in the handle shaft 222.

[0105] In some implementations, when the rotatable handle 206 is in the sensing position, the sensor port 218 is fluidly connected to the fluid port 220, and the vent port 208 is fluidly disconnected from both the sensor port 218 and the fluid port 220.

[0106] For example, when the rotatable handle 206 is in such a position Figures 2A to 2F In the indicated sensing position, the sensor port 218 of the valve body 202 is aligned with the sensor opening 226 of the handle shaft 222, and the fluid port 220 of the valve body 202 is aligned with the fluid opening 228 of the handle shaft 222. Therefore, in this example of invasive blood pressure monitoring, a fluid column in the tubing can flow through the fluid port 220 and the fluid opening 228 of the handle shaft 222, then through the handle cavity of the handle shaft 222, then exit the handle cavity through the sensor opening 226 of the handle shaft 222, and then enter the tubing that connects the sensor port 218 of the valve body 202 to the pressure sensor. Thus, the pressure sensor can detect pressure and / or blood pressure from the fluid.

[0107] In some implementations, when the rotatable handle 206 is in such a position Figures 2A to 2F When the sensing position is shown, the vent port 208 of the valve body 202 is not aligned with the vent opening 224 of the handle shaft 222. For example, as Figure 2D As shown, when the rotatable handle 206 is in the sensing position, the vent opening 224 of the handle shaft 222 is positioned on the opposite side of the example pressure sensor calibration valve 200 compared to the position of the vent opening 224 of the handle shaft 222. In some embodiments, the pressure sensor calibration valve 200 provides sufficient fit between the valve body 202 and the handle shaft 222 such that atmospheric pressure does not leak into the example pressure sensor calibration valve 200 when the vent port 208 of the valve body 202 is not aligned with the vent opening 224 of the handle shaft 222. Additionally, as combined with at least Figure 2C As described, when the rotatable handle 206 is in the sensing position, the leaf spring 234 presses the sealing member 204 to seal the vent port opening 248 of the vent port 208, thereby providing a redundant guarantee that atmospheric pressure will not leak into the example pressure sensor calibration valve 200 when the rotatable handle 206 is in the sensing position.

[0108] See now Figures 3A to 3C An example view is illustrated in association with an example pressure sensor calibration valve 300 according to some embodiments of this disclosure. Specifically, Figure 3A This is an example front view illustrating an example pressure sensor calibration valve 300 according to some embodiments of the present disclosure. Figure 3B These are examples of some implementation schemes according to this disclosure. Figure 3A The example rear view of the example pressure sensor calibration valve 300 is shown. Figure 3C These are examples of some implementation schemes according to this disclosure. Figure 3A The example enlarged view of the pressure sensor calibration valve 300 shown is shown.

[0109] It should be noted that Figure 3B and Figure 3C Some components are illustrated as transparent or translucent in order to illustrate and highlight various features according to some embodiments of this disclosure. In some embodiments, such components may not be constructed to be transparent or translucent.

[0110] See now Figure 3A The pressure sensor calibration valve 300 includes a valve body 301 and a rotatable handle 305.

[0111] Similar to the above combination Figures 2A to 2FIn the described example, valve body 301 includes a valve cavity. In some embodiments, the valve cavity is in the form of a central chamber in valve body 301, which acts as a junction connecting the different ports of valve body 301. In some embodiments, each port of valve body 301 is connected to the valve cavity and includes an opening connected to the valve cavity.

[0112] For example, valve body 301 may include a fluid port 319, a sensor port 317, and a vent port 307. In such an example, the fluid port 319, the sensor port 317, and the vent port 307 are each connected to a valve cavity of valve body 301.

[0113] Similar to the above combination Figures 2A to 2F The fluid port 220 described, Figure 3A The fluid port 319 shown is located at the top portion of the valve body 301. In some embodiments, the fluid port 319 receives fluid from the top portion of the valve body 301. For example, in the invasive blood pressure monitoring example described above, the fluid port 319 receives a fluid column in the tubing that carries blood pressure.

[0114] Similar to the above combination Figures 2A to 2F The described sensor port 218, Figure 3A The sensor port 317 shown is located at the bottom portion of the valve body 301. In some embodiments, the sensor port 317 is fluidly connected to a pressure sensor (such as, but not limited to, those described above). Figure 1A and Figure 1B Example pressure sensor 100 described. For example, a conduit connects sensor port 317 of valve body 301 to the pressure sensor and provides a fluid passage from sensor port 317 to the pressure sensor.

[0115] Similar to the above combination Figures 2A to 2F The described ventilation port 208, Figure 3A The vent port 307 shown is located on a side portion of the valve body 301. In some embodiments, when the example pressure sensor calibration valve 300 is not in use, a vent cap 329 may be secured to the valve body 301 to cover and protect the vent port 307. In some embodiments, when the example pressure sensor calibration valve 300 is in use, the vent cap 329 is removed, and the vent port 307 includes a vent opening that exposes to the external environment, such that the pressure at the vent port 307 is atmospheric pressure.

[0116] See again Figure 3A The example shown includes a rotatable handle 305 with a handle grip 331 and a handle shaft 321.

[0117] Similar to the above combination Figures 2A to 2FIn the described example, the handle grip 331 is a portion of the rotatable handle 305 positioned outside the valve body 301. In some embodiments, a user can hold the handle grip 331 of the rotatable handle 305 and rotate the rotatable handle 305. In some embodiments, the handle grip 331 is shaped to provide comfort to the user's hand when the user's hand grips the handle grip 331. In some embodiments, the handle grip 331 includes a non-slip surface, allowing the user to apply force to rotate the rotatable handle 305 without slipping.

[0118] In some embodiments, the handle shaft 321 is part of the rotatable handle 305 positioned within the valve body 301. In some embodiments, the handle shaft 321 may be shaped like an elongated cylinder. In some embodiments, the longitudinal axis of the handle shaft 321 is aligned with the axis of rotation of the handle grip 331.

[0119] See now Figure 3B and Figure 3C An example view of a sample pressure sensor calibration valve 300 is provided, showing the handle shaft 321 in the valve body 301. Specifically, Figure 3B An example cross-sectional rear view of an example pressure sensor calibration valve 300 is shown, and Figure 3C An example enlarged view of an example pressure sensor calibration valve 300 is shown.

[0120] Similar to the above combination Figures 2A to 2F The described example shows a pressure sensor calibration valve 300 including a valve body 301, a rotatable handle 305, and a sealing component 303.

[0121] In some embodiments, the sealing member 303 may be spherically shaped. In some embodiments, the diameter of the sealing member 303 is larger than the diameter of the vent opening 337 of the vent port 307. In some embodiments, the sealing member 303 may comprise materials such as, but not limited to, silicone, elastomers, plastics, polymers, and / or steel. In some embodiments, the sealing member 303 may comprise a silicone ball.

[0122] exist Figure 3B and Figure 3C In the example shown, the example pressure sensor calibration valve 300 includes a leaf spring 333. In some embodiments, the leaf spring 333 includes a first end and a second end. In some embodiments, the first end is opposite to the second end. In some embodiments, the first end of the leaf spring 333 is fixed to the inner surface of the vent port 307 of the valve body 301. In some embodiments, the second end of the leaf spring 333 is fixed to the outer surface of the sealing member 303.

[0123] While the foregoing description provides examples of leaf springs, it should be noted that the scope of this disclosure is not limited to the foregoing description. In some examples, the example pressure sensor calibration valve may include one or more additional and / or alternative components (such as, but not limited to, magnetic components) that press and / or bias the sealing component toward the vent opening of the vent port.

[0124] In some implementations, the sealing member 303 is connected to the linear rack 309. For example, as Figure 3B As shown, the sealing member 303 is connected to the linear rack 309 via a connecting bridge 335. In some embodiments, the linear rack 309 includes a plurality of rack teeth 313 arranged along the length of the linear rack 309.

[0125] In some implementations, the rotatable handle 305 is connected to the pinion 311. For example, as... Figure 3B and Figure 3C As shown, the handle shaft 321 of the rotatable handle 305 includes a pinion 311. In some embodiments, the pinion 311 includes a plurality of gear teeth 315 arranged along the outer circumference of the handle shaft 321.

[0126] In some embodiments, both the linear rack 309 and the pinion 311 are positioned within the valve body 301. For example, both the linear rack 309 and the pinion 311 may be positioned within the valve cavity described above. Similar to what has been described above, the pinion 311 meshes with the linear rack 309.

[0127] Figure 3B and Figure 3C This illustration shows an example position of the sealing element 303 in the example pressure sensor calibration valve 300 when the rotatable handle 305 is in the vented position. Figure 3B and Figure 3C As shown, due to the force applied to the sealing member 303 by the connecting bridge 335, the leaf spring 333 is compressed, and a gap is formed between the sealing member 303 and the vent port opening 337. Therefore, when the rotatable handle 305 is in the vented position, atmospheric pressure enters the pressure sensor calibration valve 300 through the gap between the sealing member 303 and the vent port opening 337.

[0128] In some implementations, the user can position their hand on the handle grip of the rotatable handle and apply force to tug the rotatable handle from... Figures 3A to 3C The ventilation position shown is rotated to Figures 2A to 2FThe sensing position is shown. As described above, pinion 311 meshes with linear rack 309, such that rotation of the rotatable handle 305 causes linear movement of the sealing member 303. In some embodiments, rotation of the rotatable handle 305 may cause linear movement of the sealing member 303 to move closer to and / or seal the vent opening 337 of the vent port 307 due to the force applied to the sealing member 303 by the leaf spring 333.

[0129] See again Figure 3B The handle shaft 321 may include a handle cavity. In some embodiments, the handle cavity is in the form of a central chamber in the handle shaft 321, which acts as a junction connecting the different openings of the handle shaft 321. In some embodiments, each opening of the handle shaft 321 is connected to the handle cavity.

[0130] In this example, the handle shaft 321 of the rotatable handle 305 includes a vent opening 323, a sensor opening 325, and a fluid opening 327. In some embodiments, the vent opening 323, the sensor opening 325, and the fluid opening 327 are fluidly connected to each other through a handle cavity.

[0131] In some implementations, when the rotatable handle 305 is in the vented position, the sensor port 317 is fluidly connected to the vent port 307, and the fluid port 319 is fluidly disconnected from both the sensor port 317 and the vent port 307.

[0132] For example, when the rotatable handle 305 is in such a position Figures 3A to 3C In the venting position shown, the sensor port 317 of the valve body 301 is aligned with the sensor opening 325 of the handle shaft 321, and the vent port 307 of the valve body 301 is aligned with the vent opening 323 of the handle shaft 321. Therefore, the pressure sensor is fluidly connected to the external environment at atmospheric pressure through the sensor port 317 and sensor opening 325 of the valve body 301, through the handle cavity of the handle shaft 321, and through the vent opening 323 of the handle shaft 321 and the vent port 307 of the valve body 301. Because the rotation of the rotatable handle 305 causes the sealing member 303 to be positioned away from the vent port 307, the sealing member 303 no longer seals the vent port opening 337 of the vent port 307, and the vent port 307 is open.

[0133] In some implementations, when the rotatable handle is in such a position Figures 3A to 3C In the venting position shown, the fluid port 319 of the valve body 301 is not aligned with the fluid opening 327 of the handle shaft 321. For example, as Figure 3BAs shown, the fluid opening 327 of the handle shaft 321 is positioned away from the fluid port 319 of the valve body 301. Therefore, when the rotatable handle 305 is in the vented position, no fluid enters the flow channel through the fluid port 319.

[0134] See now Figure 4A and Figure 4B This illustrates various features of the example pressure sensor calibration valve 400. Specifically, Figure 4A This is an example rear view illustrating an example pressure sensor calibration valve 400 according to some embodiments of the present disclosure.

[0135] It should be noted that Figure 4A Some components are illustrated as transparent or translucent in order to illustrate and highlight various features according to some embodiments of this disclosure. In some embodiments, such components may not be constructed to be transparent or translucent.

[0136] exist Figure 4A In the example shown, the pressure sensor calibration valve 400 includes a valve body 402, a rotatable handle 406, and a sealing component 404.

[0137] In some embodiments, the valve body 402 includes a valve cavity. In some embodiments, the valve cavity is in the form of a central chamber in the valve body 402, which acts as a junction connecting the different ports of the valve body 402. In some embodiments, each port of the valve body 402 is connected to the valve cavity and includes an opening connected to the valve cavity.

[0138] For example, valve body 402 may include fluid port 420, sensor port 418, and vent port 408. In such an example, fluid port 420, sensor port 418, and vent port 408 are each connected to a valve cavity of valve body 402.

[0139] In some embodiments, the fluid port 420 is located at the top portion of the valve body 402. In some embodiments, the fluid port 420 receives fluid from the top portion of the valve body 402. For example, in the invasive blood pressure monitoring example described above, the fluid port 420 receives a column of fluid in the tubing that carries blood pressure.

[0140] In some embodiments, sensor port 418 is located at the bottom portion of valve body 402. In some embodiments, sensor port 418 is fluidly connected to a pressure sensor (such as, but not limited to, those described above). Figure 1A and Figure 1B Example pressure sensor 100 is described. For example, a conduit connects the sensor port 418 of the valve body 402 to the pressure sensor and provides a fluid passage from the sensor port 418 to the pressure sensor.

[0141] In some embodiments, the vent port 408 is located on a side portion of the valve body 402. In some embodiments, the vent port 408 provides a vent port opening that can be exposed to the external environment, such that the pressure at the vent port 408 is atmospheric pressure. In some embodiments, when the pressure sensor is not in zero calibration, the sealing member 404 can be biased to seal the vent port opening 448 of the vent port 408.

[0142] In some embodiments, the rotatable handle 406 includes a handle grip 432 and a handle shaft 422.

[0143] In some embodiments, the handle grip 432 is a portion of the rotatable handle 406 positioned outside the valve body 402. In some embodiments, a user can hold the handle grip 432 of the rotatable handle 406 and rotate the rotatable handle 406. In some embodiments, the handle grip 432 is shaped to provide comfort to the user's hand when the user's hand grips the handle grip 432. In some embodiments, the handle grip 432 includes a non-slip surface, allowing the user to apply force to rotate the rotatable handle 406 without slipping.

[0144] In some embodiments, the handle shaft 422 is part of the rotatable handle 406 positioned within the valve body 402. In some embodiments, the handle shaft 422 may be shaped like an elongated cylinder. In some embodiments, the longitudinal axis of the handle shaft 422 is aligned with the axis of rotation of the handle grip 432.

[0145] In some embodiments, the rotatable handle 406 can be rotated to multiple positions. In some embodiments, the multiple positions of the rotatable handle 406 may include a ventilation position and a sensing position. For example, Figure 4A An example of a rotatable handle 406 in a sensing position is shown.

[0146] In some implementations, a user can position their hand on the handle grip of the rotatable handle and apply force to rotate the rotatable handle from the sensing position to the ventilating position. For example, the user can apply force to rotate... Figure 4A The rotating handle shown has a handle grip to switch the rotating handle from the sensing position to the position shown. Figures 3A to 3C The ventilation location is shown.

[0147] Similar to the various examples described above, when the rotatable handle is in the sensing position, the sensor port is fluidly connected to the fluid port, and the vent port is fluidly disconnected from both the sensor port and the fluid port. In some embodiments, when the rotatable handle is in the venting position, the sensor port is fluidly connected to the vent port, and the fluid port is fluidly disconnected from both the sensor port and the vent port.

[0148] In some embodiments, the sealing member 404 may be spherically shaped. In some embodiments, the diameter of the sealing member 404 is larger than the diameter of the vent port 408. In some embodiments, the sealing member 404 may comprise materials such as, but not limited to, silicone, elastomers, plastics, and / or polymers. In some embodiments, the sealing member 404 may comprise a silicone ball.

[0149] In some embodiments, the sealing member 404 is biased to seal the vent port opening of the vent port 408. Figure 4A In the example shown, the example pressure sensor calibration valve 400 includes a leaf spring 434 that biases the sealing member 404 toward the vent port 408.

[0150] In some embodiments, the leaf spring 434 includes a first end and a second end opposite to the first end. In some embodiments, the first end of the leaf spring 434 is fixed to the inner surface of the vent port 408 of the valve body 402. In some embodiments, the second end of the leaf spring 434 is fixed to the outer surface of the sealing member 404. For example, during the manufacture of the example pressure sensor calibration valve 400, the sealing member 404 is positioned in the vent port chamber 446 of the vent port 408. Subsequently, while the leaf spring 434 is compressed, the second end of the leaf spring 434 is fixed to the outer surface of the sealing member 404, and the first end of the leaf spring 434 is fixed to the inner surface of the vent port 408 of the valve body 402. Because the leaf spring 434 has a natural tendency to return to an uncompressed state, the leaf spring 434 applies force to the sealing member 404 and presses the sealing member 404 against the vent port opening 448 of the vent port 408. Therefore, the sealing member 404 is biased to cover and seal the vent port opening 448 of the vent port 408 of the valve body 402.

[0151] In some embodiments, the sealing member 404 is connected to the linear rack 410. For example, as Figure 4A As shown, the sealing member 404 is connected to the linear rack 410 via a connecting bridge 436. In some embodiments, the linear rack 410 includes a plurality of rack teeth 414 arranged along the length of the linear rack 410.

[0152] In some implementations, the rotatable handle 406 is connected to the pinion 412. For example, as... Figure 4A As shown, the handle shaft 422 of the rotatable handle 406 is connected to the pinion 412. In some embodiments, the pinion 412 includes a plurality of gear teeth 416 arranged along the circumference of the pinion 412.

[0153] In some embodiments, both the linear rack 410 and the pinion 412 are located within the valve body 402. For example, both the linear rack 410 and the pinion 412 may be located within the valve cavity described above.

[0154] In some embodiments, pinion 412 meshes with linear rack 410 such that rotation of rotatable handle 406 causes displacement of sealing member 404 away from vent port opening of vent port 408.

[0155] For example, such as Figure 4A As shown, rotation of the rotatable handle 406 in the direction indicated by arrow 438 causes rotation of a plurality of gear teeth 416 of the pinion 412 in the direction indicated by arrow 440. In some embodiments, the plurality of gear teeth 416 of the pinion 412 mesh with a plurality of rack teeth 414 of the linear rack 410. Therefore, rotation of the plurality of gear teeth 416 in the direction indicated by arrow 440 causes linear movement of the linear rack 410 in the direction indicated by arrow 442. Continuing in this example, the linear movement of the linear rack 410 in the direction indicated by arrow 442 applies a force to the sealing member 404 in the direction indicated by arrow 444, since the sealing member 404 is connected to the linear rack 410 via a connecting bridge 436. In some embodiments, the force applied to the sealing member 404 by the linear rack 410 via the connecting bridge 436 compresses the leaf spring 434 and pushes the sealing member 404 away from the vent opening 448 of the vent port 408. Therefore, the vent opening 448 is opened.

[0156] In some embodiments, the spring-actuated switch 456 is coupled to the leaf spring 434. In some embodiments, the spring-actuated switch 456 is a type of switch that operates based on the compressed state of the leaf spring 434. See now. Figure 4B Examples are provided. Figure 4A The example circuit diagram shown is an example of the electronic components of the example pressure sensor calibration valve 400 (including spring-actuated switch 456 and leaf spring 234).

[0157] exist Figure 4B In the example shown, the spring-actuated switch 456 is electrically coupled to the pressure sensor 454 (e.g., via...). Figure 4A(One or more cables 450 shown). In some embodiments, when the leaf spring 434 is compressed due to the rotation of the rotatable handle 406 from the sensing position to the venting position, the spring-actuated switch 456 is activated and conducts, such that the contacts of the spring-actuated switch 456 electrically couple the high-voltage generator 452 to the pressure sensor 454 (or other electronic components coupled to the pressure sensor 454 as described below). In some embodiments, the high-voltage generator 452 sends a high-voltage signal to the pressure sensor 454 (or other electronic components coupled to the pressure sensor 454 as described below), which triggers the pressure sensor 454 to initiate a zeroing calibration process.

[0158] Therefore, the rotation of the rotatable handle from the sensing position to the venting position not only causes the sealing member 404 to shift away from the venting port opening 448 (and thus enables the pressure sensor 454 to detect atomic-scale pressure), but also triggers an electrical signal (when the spring-actuated switch 456 is turned on and sends a voltage signal from the high-voltage generator 452), which initiates the zeroing calibration of the pressure sensor 454. Thus, the example pressure sensor calibration valve according to some embodiments of this disclosure improves the zeroing calibration of the pressure sensor.

[0159] Although Figure 4B An example of an electrical signal being sent to pressure sensor 454 is illustrated; however, it should be noted that the scope of this disclosure is not limited to the description above. For example, one or more electronic components (such as, but not limited to, a sensor controller) may also be electrically coupled to pressure sensor 454. In such an example, spring-actuated switch 456 is electrically coupled to the sensor controller. When the rotary handle is rotated from the sensing position to the ventilated position, spring-actuated switch 456 is turned on, such that a high-voltage signal is provided to the sensor controller, and the sensor controller then initiates zeroing calibration of pressure sensor 454.

[0160] See now Figure 5A and Figure 5B This illustrates various features of the example pressure sensor calibration valve 500. Specifically, Figure 5A This is an example rear view illustrating an example pressure sensor calibration valve 500 according to some embodiments of the present disclosure.

[0161] It should be noted that Figure 5A Some components are illustrated as transparent or translucent in order to illustrate and highlight various features according to some embodiments of this disclosure. In some embodiments, such components may not be constructed to be transparent or translucent.

[0162] exist Figure 5A In the example shown, the pressure sensor calibration valve 500 includes a valve body 501, a rotatable handle 505, and a sealing component 503.

[0163] In some embodiments, the valve body 501 includes a valve cavity. In some embodiments, the valve cavity is in the form of a central chamber in the valve body 501, which serves as a junction connecting the different ports of the valve body 501. In some embodiments, each port of the valve body 501 is connected to the valve cavity and includes an opening connected to the valve cavity.

[0164] For example, valve body 501 may include a fluid port 519, a sensor port 517, and a vent port 507. In such an example, the fluid port 519, the sensor port 517, and the vent port 507 are each connected to a valve cavity of valve body 501.

[0165] In some embodiments, fluid port 519 is located at the top portion of valve body 501. In some embodiments, fluid port 519 receives fluid from the top portion of valve body 501. For example, in the invasive blood pressure monitoring example described above, fluid port 519 receives a column of fluid in a tubing that carries blood pressure.

[0166] In some embodiments, sensor port 517 is located at the bottom portion of valve body 501. In some embodiments, sensor port 517 is fluidly connected to a pressure sensor (such as, but not limited to, those described above). Figure 1A and Figure 1B Example pressure sensor 100 is described. For example, a conduit connects the sensor port 517 of valve body 501 to the pressure sensor and provides a fluid passage from sensor port 517 to the pressure sensor.

[0167] In some embodiments, the vent port 507 is located on a side portion of the valve body 501. In some embodiments, the vent port 507 provides an opening exposed to the external environment such that the pressure at the vent port 507 is atmospheric pressure. In some embodiments, the sealing member 503 can be biased to seal the vent port opening of the vent port 507 when the pressure sensor is not in zero calibration.

[0168] In some embodiments, the rotatable handle 505 includes a handle grip 531 and a handle shaft 521.

[0169] In some embodiments, the handle grip 531 is a portion of the rotatable handle 505 positioned outside the valve body 501. In some embodiments, a user can hold the handle grip 531 of the rotatable handle 505 and rotate the rotatable handle 505. In some embodiments, the handle grip 531 is shaped to provide comfort to the user's hand when the user's hand grips the handle grip 531. In some embodiments, the handle grip 531 includes a non-slip surface, allowing the user to apply force to rotate the rotatable handle 505 without slipping.

[0170] In some embodiments, the handle shaft 521 is part of the rotatable handle 505 positioned within the valve body 501. In some embodiments, the handle shaft 521 may be shaped like an elongated cylinder. In some embodiments, the longitudinal axis of the handle shaft 521 is aligned with the axis of rotation of the handle grip 531.

[0171] In some embodiments, the rotatable handle 505 can be rotated to multiple positions. In some embodiments, the multiple positions of the rotatable handle 505 may include a ventilation position and a sensing position. For example, Figure 5A An example of a rotatable handle 505 in a sensing position is shown.

[0172] In some implementations, a user can position their hand on the handle grip of the rotatable handle and apply force to rotate the rotatable handle from the sensing position to the ventilating position. For example, the user can apply force to rotate... Figure 5A The rotating handle shown has a handle grip to switch the rotating handle from the sensing position to the position shown. Figures 3A to 3C The ventilation location is shown.

[0173] Similar to the various examples described above, when the rotatable handle is in the sensing position, the sensor port is fluidly connected to the fluid port, and the vent port is fluidly disconnected from both the sensor port and the fluid port. In some embodiments, when the rotatable handle is in the venting position, the sensor port is fluidly connected to the vent port, and the fluid port is fluidly disconnected from both the sensor port and the vent port.

[0174] In some embodiments, the sealing member 503 may be spherically shaped. In some embodiments, the diameter of the sealing member 503 is larger than the diameter of the vent port 507. In some embodiments, the sealing member 503 may comprise materials such as, but not limited to, silicone, elastomers, plastics, polymers, and / or steel. In some embodiments, the sealing member 503 may comprise a silicone ball.

[0175] In some embodiments, the sealing member 503 is biased to seal the vent opening of the vent port 507. In some embodiments, the sealing member 503 is biased by a leaf spring to seal the vent opening of the vent port 507.

[0176] In some embodiments, the leaf spring 533 includes a first end and a second end opposite to the first end. In some embodiments, the first end of the leaf spring 533 is fixed to the inner surface of the vent port 507 of the valve body 501. In some embodiments, the second end of the leaf spring 533 is fixed to the outer surface of the sealing member 503. For example, during the manufacture of the example pressure sensor calibration valve 500, the sealing member 503 is positioned in the vent port chamber of the vent port 507. Subsequently, while the leaf spring 533 is compressed, the second end of the leaf spring 533 is fixed to the outer surface of the sealing member 503, and the first end of the leaf spring 533 is fixed to the inner surface of the vent port 507 of the valve body 501. Because the leaf spring 533 has a natural tendency to return to an uncompressed state, the leaf spring 533 applies force to the sealing member 503 and presses the sealing member 503 against the vent port opening 547 of the vent port 507. Therefore, the sealing member 503 is biased to cover and seal the vent port opening 547 of the vent port 507 of the valve body 501.

[0177] In some implementations, the sealing member 503 is connected to the linear rack 509. For example, as Figure 5A As shown, the sealing member 503 is connected to the linear rack 509 via a connecting bridge 535. In some embodiments, the linear rack 509 includes a plurality of rack teeth 513 arranged along the length of the linear rack 509.

[0178] In some implementations, the rotatable handle 505 is connected to the pinion 511. For example, as... Figure 5A As shown, the handle shaft 521 of the rotatable handle 505 is connected to the pinion 511. In some embodiments, the pinion 511 includes a plurality of gear teeth 515 arranged along the circumference of the pinion 511.

[0179] In some embodiments, both the linear rack 509 and the pinion 511 are located within the valve body 501. For example, both the linear rack 509 and the pinion 511 may be located within the valve cavity described above.

[0180] In some embodiments, pinion 511 meshes with linear rack 509 such that rotation of rotatable handle 505 causes displacement of sealing member 503 away from vent port opening of vent port 507.

[0181] For example, such as Figure 5AAs shown, rotation of the rotatable handle 505 in the direction indicated by arrow 537 causes rotation of a plurality of gear teeth 515 of the pinion 511 in the direction indicated by arrow 539. In some embodiments, the plurality of gear teeth 515 of the pinion 511 mesh with a plurality of rack teeth 513 of the linear rack 509. Therefore, rotation of the plurality of gear teeth 515 in the direction indicated by arrow 539 causes linear movement of the linear rack 509 in the direction indicated by arrow 541. Continuing in this example, the linear movement of the linear rack 509 in the direction indicated by arrow 541 applies a force to the sealing member 503 in the direction indicated by arrow 543, since the sealing member 503 is connected to the linear rack 509 via a connecting bridge 535. In some embodiments, the force applied to the sealing member 503 by the linear rack 509 via the connecting bridge 535 compresses the leaf spring 533 and pushes the sealing member 503 away from the vent opening 547 of the vent port 507. Therefore, the vent opening 547 is opened.

[0182] In some implementations, the pressure sensor calibration valve 500 also includes a metal plate 555 and an anisotropic magnetoresistive (AMR) sensor 551 that detects linear movement of a linear rack 509 to trigger an electrical signal that initiates zero calibration of the pressure sensor due to rotation of the rotatable handle 505 from a sensing position to a venting position.

[0183] exist Figure 5A In the example shown, a metal plate 555 is fixed to the end of a linear rack 509 (e.g., disposed on the end face of the linear rack 509 or embedded in the end of the linear rack 509). In some embodiments, the metal plate 555 comprises a metallic material. Therefore, rotation of the rotatable handle 505 causes linear movement of the metal plate 555, which is part of the linear rack 509.

[0184] While the foregoing description provides an example of a metal plate 555 positioned at the end of a linear rack 509, it should be noted that the scope of this disclosure is not limited to the foregoing description. Additionally or alternatively, the metal plate may be fixed to a handle shaft 521 (e.g., disposed on a surface of the handle shaft 521 or embedded in the handle shaft 521). In such examples, rotation of the rotatable handle 505 causes rotational movement of the metal plate, which is part of the handle shaft 521.

[0185] In some embodiments, the AMR sensor 551 is fixed within the valve body 501. In some embodiments, the AMR sensor 551 is configured to detect changes in the magnetic field caused by linear and / or rotational movement of the metal plate 555. In some embodiments, upon detection of linear and / or rotational movement of the metal plate 555, the AMR sensor 551 is triggered to generate an electrical signal that initiates zeroing calibration of the pressure sensor (in conjunction with...). Figure 5B Additional details are described.

[0186] In some embodiments, the pressure sensor calibration valve 500 may also include a bias magnet fixed in the valve body 501 and adjacent to the AMR sensor 551 to enhance the detection sensitivity of the AMR sensor 551.

[0187] See now Figure 5B Examples are provided. Figure 5A The example circuit diagram shown is an example of the electronic components of the example pressure sensor calibration valve 500.

[0188] exist Figure 5B In the example shown, AMR sensor 551 is electrically coupled to pressure sensor 553 (e.g., via...). Figure 5A (One or more cables 549 are shown). In some embodiments, rotation of the rotatable handle 505 from the sensing position to the venting position causes movement of the metal plate 555, and the movement of the metal plate 555 is detected by the AMR sensor 551. In some embodiments, upon detecting movement of the metal plate 555 due to rotation of the rotatable handle 505 to the venting position, the AMR sensor 551 generates an electrical signal that initiates zeroing calibration of the pressure sensor 553.

[0189] Therefore, the rotation of the rotatable handle from the sensing position to the venting position not only causes the sealing member 503 to shift away from the venting port opening 547 (and thus enables the pressure sensor 553 to detect atomic-scale pressure), but also triggers an electrical signal that initiates the zeroing calibration of the pressure sensor 553. Thus, the example pressure sensor calibration valve according to some embodiments of this disclosure improves the zeroing calibration of the pressure sensor.

[0190] Although Figure 5B An example of an electrical signal being sent to pressure sensor 553 is illustrated; however, it should be noted that the scope of this disclosure is not limited to the description above. For example, one or more electronic components (such as, but not limited to, a sensor controller) may also be electrically coupled to pressure sensor 553. In such an example, AMR sensor 551 is electrically coupled to sensor controller. When the rotatable handle is rotated from the sensing position to the ventilated position, AMR sensor 551 sends an electrical signal to sensor controller, and sensor controller then initiates zeroing calibration of pressure sensor 553.

[0191] It should be understood that this disclosure is not limited to the specific embodiments disclosed, and modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terminology is used herein, it is used in a general and descriptive sense only, and not for purposes of limitation, unless otherwise described.

Claims

1. A pressure sensor calibration valve for improving the zero-calibration of a pressure sensor, the pressure sensor calibration valve comprising: Valve body, the valve body including a vent port; A rotatable handle, the rotatable handle being connected to a pinion positioned within the valve body, and A sealing component, connected to a linear rack meshing with the pinion, is biased to seal the vent opening of the vent port when the rotatable handle is in the sensing position. The rotation of the rotatable handle from the sensing position to the venting position causes the sealing component to shift away from the venting port opening and triggers an electrical signal that initiates the zeroing calibration of the pressure sensor.

2. The pressure sensor calibration valve according to claim 1, wherein the electrical signal is sent to the pressure sensor.

3. The pressure sensor calibration valve according to claim 1, wherein the electrical signal is sent to a sensor controller electrically coupled to the pressure sensor.

4. The pressure sensor calibration valve of claim 1, wherein the sealing member is biased by a leaf spring to seal the vent port opening of the vent port.

5. The pressure sensor calibration valve of claim 4, wherein the leaf spring is coupled to a spring-actuated switch, and wherein the rotation of the rotatable handle from the sensing position to the venting position activates the spring-actuated switch.

6. The pressure sensor calibration valve according to claim 1, wherein the pressure sensor calibration valve further comprises: A metal plate, the metal plate being fixed to the end of the linear rack; and An anisotropic magnetoresistive (AMR) sensor is fixed in the valve body.

7. The pressure sensor calibration valve of claim 6, wherein the rotation of the rotatable handle from the sensing position to the venting position causes a linear movement of the metal plate, the linear movement triggering the AMR sensor to generate the electrical signal.

8. The pressure sensor calibration valve according to claim 1, wherein the linear rack comprises a plurality of rack teeth, wherein the pinion comprises a plurality of gear teeth, wherein the plurality of gear teeth mesh with the plurality of rack teeth.

9. The pressure sensor calibration valve of claim 8, wherein the rotation of the rotatable handle causes rotation of the plurality of gear teeth, wherein the rotation of the plurality of gear teeth causes linear movement of the linear rack and the sealing member.

10. The pressure sensor calibration valve according to claim 1, wherein the valve body further includes a sensor port and a fluid port.

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