Implantable clip-type blood pressure monitor and blood pressure monitoring system

Abstract

An implantable clip-type blood pressure monitor and a blood pressure monitoring system. The implantable clip-type blood pressure monitor comprises a housing, which is of annular structure having a notch and is configured to be clipped onto the outer side of a blood vessel; a pressure sensor arranged on the inner side of the housing and used for measuring blood pressure; a communication chip arranged on the inner side of the housing and connected to the pressure sensor, and being used for receiving a pressure signal transmitted by the pressure sensor; a power supply part arranged on the housing and electrically connected to the pressure sensor, and being used for supplying power to the pressure sensor; and a communication part arranged on the housing and electrically connected to the communication chip. The communication portion is wirelessly connected to an external device, and is used for wirelessly transmitting the pressure signal to the external device. The blood pressure monitor can monitor a current blood pressure value in real time on the basis of the constriction state of a blood vessel, and a patient can move freely; the measurement result is accurate, and the comfort is good; and implantation is convenient, and long-term implantation of the blood pressure monitor can be realized by means of simple surgery.

Description

An implantable clip-on blood pressure monitor and blood pressure monitoring system Technical Field

[0001] This invention relates to an implantable clip-on blood pressure monitor and a corresponding blood pressure monitoring system, belonging to the field of medical device technology. Background Technology

[0002] Blood pressure is a vital sign in the human body. Blood pressure measurement is a primary means of understanding blood levels, diagnosing hypertension, guiding treatment, evaluating the effectiveness of antihypertensive therapy, and monitoring changes in the condition. In clinical practice, population control, and scientific research, there are three methods for measuring blood pressure: invasive blood pressure monitoring, non-invasive blood pressure monitoring, and implantable blood pressure monitoring.

[0003] Invasive arterial blood pressure monitoring involves inserting an arterial catheter into an artery to directly measure blood pressure. This allows for continuous measurement, providing timely and accurate insights into blood pressure changes and offering a pathway for repeated sampling. Non-invasive blood pressure monitoring includes office blood pressure monitoring, ambulatory blood pressure monitoring, and home blood pressure monitoring, with office blood pressure monitoring being the most commonly used method. Simultaneous measurement of blood pressure in all four limbs yields indicators such as interbrachial blood pressure difference (IAD), interannual blood pressure difference (IAND), and ankle-brachial index (ABI). The comprehensive application of these indicators can improve the detection rate of stenosis in the subclavian artery, aorta, and lower extremity arteries, and predict cardiovascular disease risk. Implantable blood pressure monitoring requires the placement of an implant within a blood vessel for blood pressure measurement.

[0004] However, current blood pressure monitoring methods each have their drawbacks. Non-invasive blood pressure monitoring is susceptible to too many external interference factors; for example, changes in body position and emotions during measurement can directly affect data accuracy. Invasive blood pressure monitoring requires inserting a "pressure catheter" connected to the device into the patient's artery or vein. While the collected data is accurate, it also brings a series of problems such as wound infection, poor comfort, and restriction of patient movement. Implantable blood pressure monitoring surgery requires X-ray guidance. In addition to the high cost, patients also need to undergo anticoagulation therapy during the implantation period, impacting their quality of life.

[0005] Therefore, there is an urgent need to design a blood pressure monitor that is easy to implant, highly comfortable, and can measure blood pressure at any time. Summary of the Invention

[0006] The primary technical problem to be solved by this invention is to provide an implantable clip-on blood pressure monitor.

[0007] Another technical problem to be solved by the present invention is to provide a blood pressure monitoring system including the above-mentioned implantable clip-on blood pressure monitor.

[0008] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0009] According to a first aspect of the present invention, an implantable clip-on blood pressure monitor is provided, comprising:

[0010] The outer shell is pre-formed into a notched ring structure for clamping onto the outside of the blood vessel;

[0011] A pressure sensor, located inside the housing, is used to measure blood pressure;

[0012] A communication chip is disposed on the inner side of the housing and connected to the pressure sensor for receiving the pressure signal transmitted by the pressure sensor;

[0013] A power supply unit is disposed on the housing and electrically connected to the pressure sensor, and is used to supply power to the pressure sensor;

[0014] A communication unit is disposed on the housing and electrically connected to the communication chip; the communication unit is also wirelessly connected to an external device for wirelessly transmitting the pressure signal to the external device;

[0015] The pressure sensor monitors the current blood pressure value in real time based on the contraction state of the blood vessels; when the blood vessels are contracted to their narrowest point, the diastolic pressure is collected; when the blood vessels are dilated to their widest point, the systolic pressure is collected.

[0016] Preferably, the implantable clip-on blood pressure monitor further includes:

[0017] A pressure layer, which is attached to the inner side of the housing and covers the pressure sensor and the communication chip, is used for direct contact with blood vessels;

[0018] The contraction of blood vessels causes the pressure layer to undergo elastic deformation, which in turn squeezes the pressure sensor to measure blood pressure.

[0019] Preferably, the pressure layer is a notched annular capsule made of a flexible polymer material, the annular capsule having a hollow inner cavity filled with a liquid or gas suitable for implantation.

[0020] Preferably, the pressure sensor is a thin-film pressure sensor, which is attached to the inner side of the housing for direct contact with blood vessels.

[0021] The communication chip is located between the thin-film pressure sensor and the inner wall of the housing.

[0022] Preferably, the thin-film pressure sensor is attached to the inner wall of the housing by vapor deposition.

[0023] Preferably, the implantable clip-on blood pressure monitor further includes:

[0024] An energy storage unit is disposed between the pressure sensor and the inner wall of the housing;

[0025] The input end of the energy storage unit is connected to the pressure sensor, and the output end is connected to the communication chip.

[0026] The pressure sensor is a thin-film piezoelectric pressure sensor; the pressure sensor generates electrical energy as the blood vessels contract continuously and stores it in the energy storage unit so that the energy storage unit can autonomously power the communication chip.

[0027] Preferably, the outer shell is integrally formed or woven from at least one preset material;

[0028] The preset material includes at least metallic materials or polymeric materials.

[0029] Preferably, the outer shell is sculpted from a nickel-titanium alloy and then heat-treated to be shaped into a preset form;

[0030] When outside the body, the outer shell is in a soft and easily moldable state; when inside the body, the outer shell returns to the shape shaped by heat treatment and maintains appropriate hardness and elasticity.

[0031] Preferably, the power supply unit is an energy coil wound on the outer casing, and the communication unit is a communication coil wound on the outer casing.

[0032] According to a second aspect of the present invention, a blood pressure monitoring system is provided, including the above-described implantable clip-on blood pressure monitor.

[0033] Compared with the prior art, the present invention has the following technical effects:

[0034] (1) It can measure the patient's blood pressure in real time, is less affected by external interference factors, and allows the patient to move freely without affecting the patient's normal life.

[0035] (2) The measurement results are accurate and the comfort is good. The wound is directly sutured after the blood pressure monitor is implanted, avoiding problems such as wound infection.

[0036] (3) Easy to implant. The blood pressure monitor can be implanted for a long time through a simple surgical procedure, avoiding high surgical costs and without damaging blood vessels. Attached Figure Description

[0037] Figure 1 is a schematic diagram of an implantable clip-on blood pressure monitor provided in the first embodiment of the present invention;

[0038] Figure 2 is a schematic diagram of an implantable clip-on blood pressure monitor provided in the second embodiment of the present invention;

[0039] Figure 3 is a schematic diagram of an implantable clip-on blood pressure monitor provided in the third embodiment of the present invention. Detailed Implementation

[0040] The technical content of the present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0041] This invention provides an implantable clip-on blood pressure monitor, which is implanted into a blood vessel through an interventional procedure so that the blood pressure monitor is clipped to the outside of the blood vessel, thereby measuring blood pressure in real time by utilizing the contraction and change of the blood vessel.

[0042] First Embodiment

[0043] As shown in Figure 1, the first embodiment of the present invention provides an implantable clip-on blood pressure monitor, including a housing 1, a pressure layer 2, a pressure sensor 3, a communication chip 4, a communication unit 5, and a power supply unit 6. The housing 1 is used to clip onto the outside of a blood vessel. The pressure layer 2 is attached to the inside of the housing 1 for direct contact with the blood vessel. The pressure sensor 3 and the communication chip 4 are both disposed between the housing 1 and the pressure layer 2 and are interconnected. The pressure layer 2 transmits the pressure generated during vasoconstriction / vasodilation to the pressure sensor 3 for blood pressure measurement and transmits the pressure signal to the communication chip 4. The communication chip 4 is also electrically connected to the communication unit 5, thereby enabling wireless transmission of the pressure signal to an external device via the communication unit 5. The power supply unit 6 provides power to the pressure sensor 3 and the communication chip 4.

[0044] Specifically, in this embodiment, the outer shell 1 is integrally formed or woven from at least one preset material, which includes at least a metallic material or a polymer material. Preferably, the outer shell 1 is made of a nickel-titanium alloy that has been sculpted and heat-treated. Thus, when the outer shell 1 is outside the body, it is in a soft and easily moldable state; when the outer shell 1 is inside the body (the temperature rises to 37°C after contact with human tissue), it returns to the shape shaped by the heat treatment and maintains appropriate hardness and elasticity. As shown in Figure 1, the outer shell 1 is pre-formed into a ring structure with a notch (in this embodiment, it is a C-shaped open ring, but it is not limited to this structural form; it can also be U-shaped or other shapes) for clamping around the outside of the blood vessel.

[0045] As shown in Figure 1, the pressure layer 2 is attached to the inner side of the outer shell 1 and covers the pressure sensor 3 and the communication chip 4 for direct contact with the blood vessel. In this embodiment, the pressure layer 2 is a notched annular sac made of flexible polymer material, and the notch of the annular sac is aligned with the notch of the outer shell 1 so that the outer shell 1 can clamp onto the outside of the blood vessel. The annular sac has a hollow inner cavity 201, which is filled with a suitable implantable liquid (e.g., saline, but not limited to) or gas (e.g., carbon dioxide or other inert gas). Preferably, the pressure layer 2 is made of TPU material and filled with saline in the hollow inner cavity 201. It is understood that when the blood vessel constricts or dilates, it can cause the pressure layer 2 to undergo elastic deformation, thereby squeezing the pressure sensor 2 through the pressure layer 2, and then using the pressure sensor 2 to measure blood pressure.

[0046] As shown in Figure 1, in this embodiment, a pressure sensor 3 is disposed between the outer shell 1 and the pressure layer 2 for measuring blood pressure. A communication chip 4 is disposed between the outer shell 1 and the pressure layer 2 and connected to the pressure sensor 3 for receiving the pressure signal transmitted by the pressure sensor 3. It can be understood that the pressure sensor 3 monitors the current blood pressure value in real time based on the vasoconstriction state of the blood vessels; when the blood vessels are constricted to their narrowest point, diastolic pressure is collected; when the blood vessels are dilated to their widest point, systolic pressure is collected. Both the pressure sensor 3 and the communication chip 4 are conventional components in the art and will not be described in detail here.

[0047] As shown in Figure 1, in this embodiment, the power supply unit 5 is disposed on the housing 1 and electrically connected to the pressure sensor 3 to supply power to the pressure sensor 3. Specifically, in this embodiment, the power supply unit 5 is a wirelessly rechargeable energy coil that can be wirelessly connected to a wireless power supply device. When an external wireless power supply device approaches within a certain range of the energy coil, the energy coil wirelessly connects to the wireless power supply device, thereby supplying power to the pressure sensor 3 so that the pressure sensor 3 can collect blood pressure data and transmit the data to the communication chip 4.

[0048] As shown in Figure 1, in this embodiment, the communication unit 6 is disposed on the housing 1 and electrically connected to the communication chip 4. The communication unit 6 is also wirelessly connected to an external device for wirelessly transmitting pressure signals to the external device. Specifically, in this embodiment, the communication unit 6 is a wirelessly connectable communication coil, which is wirelessly connected to the external device. When the pressure sensor 3 transmits pressure data to the communication chip 4, the communication chip 4 transmits the pressure data to the communication unit 6, which then wirelessly transmits the pressure data to the external device. The data can be displayed on a monitor on the external device to more intuitively show the blood pressure measurement results.

[0049] The following details the specific usage of the implantable clip-on blood pressure monitor provided in the first embodiment of the present invention:

[0050] ① After blunt dissection of the skin and muscle tissue, blood vessels are exposed;

[0051] ② Slightly pry open the outer shell 1 along with the pressure layer 2 to widen the gap, thereby clamping it to the outside of the blood vessel;

[0052] ③ Bring the wireless power supply device close to the blood pressure monitor to power the pressure sensor 3 through the energy coil, and the pressure sensor 3 will start collecting pressure data;

[0053] ④ As blood vessels continuously contract / expand, the pressure sensor 3 can collect blood pressure data in microseconds throughout the entire process. When the blood vessels contract to their narrowest point, the pressure on the pressure sensor 3 drops to its lowest level, thus collecting a minimum value, which is the diastolic pressure; when the blood vessels expand to their widest point, the pressure on the pressure sensor 3 increases to its highest level, and the pressure sensor 3 collects a maximum value, which is the systolic pressure.

[0054] In summary, the implantable clip-on blood pressure monitor provided in the first embodiment of the present invention has the following beneficial effects:

[0055] (1) It can measure the patient's blood pressure in real time, is less affected by external interference factors, and allows the patient to move freely without affecting the patient's normal life.

[0056] (2) The measurement results are accurate and the comfort is good. The wound is directly sutured after the blood pressure monitor is implanted, avoiding problems such as wound infection.

[0057] (3) Easy to implant. The blood pressure monitor can be implanted for a long time through a simple surgical procedure, avoiding high surgical costs and without damaging blood vessels.

[0058] Second Embodiment

[0059] As shown in Figure 2, the second embodiment of the present invention provides an implantable clip-on blood pressure monitor, including a housing 1, a pressure sensor 3, a communication chip 4, a communication unit 5, and a power supply unit 6. Compared with the first embodiment, the difference in this embodiment is that the pressure layer 2 is omitted, and the pressure sensor 3 directly contacts the blood vessel, thereby receiving force through the pressure sensor 3 and converting the force into an electrical signal.

[0060] Specifically, in this embodiment, the pressure sensor 3 is a thin-film pressure sensor. Preferably, the thin-film pressure sensor 3 is attached to the inner wall of the housing by vapor deposition, thereby making the thin-film pressure sensor 3 adhere to the inner side of the housing 1. Thus, when the housing 1 is clamped on the outside of the blood vessel, the thin-film pressure sensor 3 can directly contact the blood vessel, thereby utilizing the contraction and compression of the blood vessel to directly compress the thin-film pressure sensor 3 to achieve blood pressure measurement.

[0061] As shown in Figure 2, the communication chip 4 is located between the thin-film pressure sensor 3 and the inner wall of the housing 1, and is connected to the thin-film pressure sensor 3. When the thin-film pressure sensor 3 detects pressure data, it transmits the pressure data to the communication chip 4, which then transmits the pressure data to the communication unit 5, and the communication unit 5 wirelessly transmits the pressure data to an external device.

[0062] In this embodiment, apart from the differences mentioned above, the outer casing 1, communication chip 4, communication unit 5, and power supply unit 6 are all the same as in the first embodiment, and will not be described again here.

[0063] Third Embodiment

[0064] As shown in Figure 3, the second embodiment of the present invention provides an implantable clip-on blood pressure monitor, including a housing 1, a pressure sensor 3, a communication chip 4, and a communication unit 5. Compared with the first embodiment, the difference in this embodiment is that the pressure layer 2 and the power supply unit 6 are omitted, and the pressure sensor 3 directly contacts the blood vessel and is self-powered.

[0065] Specifically, in this embodiment, the pressure sensor 3 is a thin-film piezoelectric pressure sensor. This thin-film piezoelectric pressure sensor 3 is attached to the inner wall of the housing via vapor deposition, thus adhering to the inner side of the housing 1. Therefore, when the housing 1 is clamped against the outside of the blood vessel, the thin-film piezoelectric pressure sensor 3 can directly contact the blood vessel, thereby utilizing the contraction and compression of the blood vessel to directly compress the thin-film piezoelectric pressure sensor 3, thereby achieving blood pressure measurement.

[0066] Furthermore, in this embodiment, the implantable clip-on blood pressure monitor also includes an energy storage unit 7. This energy storage unit 7 is preferably a capacitor, disposed between the pressure sensor 3 and the inner wall of the housing 1. The input terminal of the energy storage unit 7 is connected to the pressure sensor 3, and the output terminal of the energy storage unit 7 is connected to the communication chip 4. It is understood that the thin-film piezoelectric pressure sensor 3 can generate electrical energy as blood vessels continuously contract and store it in the energy storage unit 7, enabling the energy storage unit 7 to autonomously power the communication chip 4. Therefore, there is no need to provide external functional devices, saving production costs and improving ease of use (eliminating the need to consider power supply issues).

[0067] In this embodiment, apart from the differences mentioned above, the outer casing 1, the communication chip 4, and the communication unit 5 are all the same as in the first embodiment, and will not be described again here.

[0068] Fourth embodiment

[0069] This invention also provides a blood pressure monitoring system. The blood pressure monitoring system includes any one of the implantable clip-on blood pressure monitors described in the first to third embodiments above, and further includes a display, a data analysis unit, and a data output unit. The display is used to display data, the data analysis unit is used to analyze the patient's blood pressure data, and the data output unit outputs the blood pressure analysis results based on the data analysis results.

[0070] It should be noted that the above embodiments are merely illustrative examples. The technical solutions of each embodiment can be combined, and all are within the protection scope of this invention.

[0071] It should be understood that the terms "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0072] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0073] The implantable clip-on blood pressure monitor and blood pressure monitoring system provided by this invention have been described in detail above. Any obvious modifications made by those skilled in the art without departing from the essence of this invention will constitute an infringement of the patent rights of this invention and will incur corresponding legal liability.

Claims

1. An implantable squeeze cuff blood pressure meter, characterized by include: The outer shell is pre-formed into a notched ring structure for clamping onto the outside of the blood vessel; A pressure sensor, located inside the housing, is used to measure blood pressure; A communication chip is disposed on the inner side of the housing and connected to the pressure sensor for receiving the pressure signal transmitted by the pressure sensor; A power supply unit is disposed on the housing and electrically connected to the pressure sensor, and is used to supply power to the pressure sensor; A communication unit is disposed on the housing and electrically connected to the communication chip; the communication unit is also wirelessly connected to an external device for wirelessly transmitting the pressure signal to the external device; The pressure sensor monitors the current blood pressure value in real time based on the contraction state of the blood vessels; when the blood vessels are contracted to their narrowest point, the diastolic pressure is collected; when the blood vessels are dilated to their widest point, the systolic pressure is collected.

2. The implantable squeeze cuff blood pressure meter of claim 1, wherein Also includes: A pressure layer, attached to the inner side of the housing, and covering the pressure sensor and the communication chip, is used for direct contact with blood vessels; The contraction of blood vessels causes the pressure layer to undergo elastic deformation, which in turn squeezes the pressure sensor to measure blood pressure.

3. The implantable clip-on blood pressure monitor as described in claim 2, characterized in that: The pressure layer is a notched annular capsule made of flexible polymer material; the annular capsule has a hollow inner cavity filled with a liquid or gas suitable for implantation.

4. The implantable clip-on blood pressure monitor as described in claim 1, characterized in that: The pressure sensor is a thin-film pressure sensor, which is attached to the inner side of the housing for direct contact with blood vessels. The communication chip is located between the thin-film pressure sensor and the inner wall of the housing.

5. The implantable clip-on blood pressure monitor as described in claim 4, characterized in that: The thin-film pressure sensor is attached to the inner wall of the housing by vapor deposition.

6. The implantable squeeze cuff blood pressure meter of claim 1, wherein Also includes: An energy storage unit is disposed between the pressure sensor and the inner wall of the housing; the input end of the energy storage unit is connected to the pressure sensor, and the output end is connected to the communication chip. The pressure sensor is a thin-film piezoelectric pressure sensor. The pressure sensor generates electrical energy as the blood vessels contract continuously and stores it in the energy storage unit so that the energy storage unit can autonomously power the communication chip.

7. The implantable clip-on blood pressure monitor as described in claim 1, characterized in that: The outer shell is integrally formed or woven from at least one preset material; The preset material includes at least metallic materials or polymeric materials.

8. The implantable clip-on blood pressure monitor as described in claim 7, characterized in that: The outer shell is sculpted from a nickel-titanium alloy and then heat-treated to be shaped into a preset form. When outside the body, the outer shell is in a soft and easily moldable state; when inside the body, the outer shell returns to the shape shaped by heat treatment and maintains appropriate hardness and elasticity.

9. The implantable clip-on blood pressure monitor as described in claim 1, characterized in that: The power supply unit is an energy coil wound on the outer casing, and the communication unit is a communication coil wound on the outer casing.

10. A blood pressure monitoring system characterized by Includes the implantable clip-on blood pressure monitor as described in any one of claims 1 to 9.

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