Implanted clamp type sphygmomanometer and blood pressure monitoring system

Abstract

The invention discloses an implanted clamp type sphygmomanometer and a blood pressure monitoring system. The implanted holding and clamping type sphygmomanometer comprises a shell which is preformed into an annular structure with a notch and used for being held and clamped on the outer side of a blood vessel; the pressure sensor is arranged on the inner side of the shell and used for measuring blood pressure; the communication chip is arranged on the inner side of the shell, is connected with the pressure sensor and is used for receiving a pressure signal transmitted by the pressure sensor; the power supply part is arranged on the shell, is electrically connected with the pressure sensor and is used for supplying power to the pressure sensor; the communication part is arranged on the shell and electrically connected with the communication chip, and the communication part is further wirelessly connected with external equipment so as to be used for wirelessly transmitting the pressure signal to the external equipment. By means of the sphygmomanometer, the current blood pressure value can be monitored in real time according to the blood vessel contraction state, a patient can move freely, and normal life is not affected; the measurement result is accurate, and the comfort is better; and the sphygmomanometer is convenient to implant, and can be implanted for a long time through a simple surgical operation.

Description

Technical Field

[0001] The invention relates to an implantable clamp-type sphygmomanometer and also to a corresponding blood pressure monitoring system, belonging to the technical field of medical devices. Background Art

[0002] Blood pressure is an important vital sign of the human body. Blood pressure measurement is the main means to understand blood levels, diagnose hypertension, guide treatment, evaluate antihypertensive efficacy, and observe changes in the condition. There are three methods to measure blood pressure in clinical diagnosis and treatment, population prevention and scientific research: invasive blood pressure monitoring, non-invasive blood pressure monitoring, and implantable blood pressure monitoring.

[0003] Invasive arterial blood pressure (IAB) monitoring is a method of directly measuring blood pressure by inserting an arterial catheter into an artery. It can achieve continuous measurement of arterial blood pressure, timely and accurately understand blood pressure changes, and provide a path for repeated sampling. Non-invasive blood pressure monitoring refers to office blood pressure, dynamic blood pressure and home blood pressure, among which office blood pressure is currently the most commonly used method. Through the simultaneous measurement of blood pressure in the four limbs, indicators such as inter-arm blood pressure difference (IAD), inter-ankle blood pressure difference (IAND) and ankle-brachial index (AB I) can be obtained. The comprehensive application of these indicators can improve the detection rate of stenosis of the subclavian artery, aorta and lower limb arteries, and predict the risk of cardiovascular disease. Implantable blood pressure monitoring requires the placement of an implant in the blood vessel to measure blood pressure.

[0004] However, current blood pressure monitoring methods have their own shortcomings. Non-invasive blood pressure monitoring is subject to too many external interference factors. For example, changes in body position and emotions during measurement will directly affect the accuracy of the data. Invasive blood pressure monitoring requires the placement of a "pressure catheter" connected to the instrument in the patient's artery or vein. Although the collected data is accurate, it also brings a series of problems such as wound infection, poor comfort, and patients being unable to move freely. The surgery for implantable blood pressure monitoring needs to be performed under X-rays. In addition to factors such as high cost, patients also need anticoagulant treatment during the implantation period, which affects their quality of life.

[0005] Based on this, there is an urgent need to design a sphygmomanometer 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 the present invention is to provide an implantable clamp-type sphygmomanometer.

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

[0008] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0009] According to a first aspect of an embodiment of the present invention, there is provided an implantable clamp-type sphygmomanometer, comprising:

[0010] The outer shell is preformed into a ring structure with a notch so as to be clamped on the outside of the blood vessel;

[0011] A pressure sensor is disposed inside the housing to measure blood pressure;

[0012] A communication chip is arranged inside the housing and connected to the pressure sensor to receive a pressure signal transmitted by the pressure sensor;

[0013] a power supply unit, disposed on the housing and electrically connected to the pressure sensor, for supplying power to the pressure sensor;

[0014] a communication unit, which is disposed on the housing and electrically connected to the communication chip, and the communication unit is also wirelessly connected to an external device to wirelessly transmit the pressure signal to the external device;

[0015] The pressure sensor monitors the current blood pressure value in real time according to the contraction state of the blood vessels; when the blood vessels contract to the thinnest, the diastolic pressure is collected; when the blood vessels expand to the thickest, the systolic pressure is collected.

[0016] Preferably, the implantable clamp-type sphygmomanometer further comprises:

[0017] a pressure layer, the pressure layer being attached to the inner side of the housing and covering the pressure sensor and the communication chip so as to be in direct contact with the blood vessel;

[0018] The contraction of the blood vessels can drive the pressure layer to undergo elastic deformation, so as to squeeze the pressure sensor through the pressure layer, thereby measuring blood pressure.

[0019] Preferably, the pressure layer is formed of a flexible polymer material to form an annular capsule with a notch, and the annular capsule has a hollow inner cavity filled with a liquid or gas suitable for implantation.

[0020] Preferably, the pressure sensor is a thin film pressure sensor, and the thin film pressure sensor is attached to the inner side of the housing so as to be in direct contact with the blood vessel;

[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 evaporation.

[0023] Preferably, the implantable clamp-type sphygmomanometer further comprises:

[0024] An energy storage unit is disposed between the pressure sensor and the inner wall of the housing, wherein an input end of the energy storage unit is connected to the pressure sensor, and an output end of the energy storage unit is connected to the communication chip;

[0025] Among them, the pressure sensor is a thin film piezoelectric pressure sensor, which can generate electrical energy and store it in the energy storage unit as the blood vessels continue to contract, so that the energy storage unit can autonomously supply energy to the communication chip.

[0026] Preferably, the shell is integrally formed or woven from at least one preset material;

[0027] The preset material at least includes a metal material or a polymer material.

[0028] Preferably, the shell is carved from nickel-titanium alloy and shaped into a preset shape through heat treatment;

[0029] When outside the body, the shell is in a soft and easily shaped state; when inside the body, the shell returns to the shape shaped by heat treatment and maintains appropriate hardness and elasticity.

[0030] Preferably, the power supply part is an energy coil wound on the shell, and the communication part is a communication coil wound on the shell.

[0031] According to a second aspect of an embodiment of the present invention, there is provided a blood pressure monitoring system, which includes the above-mentioned implantable clamp-type blood pressure monitor.

[0032] Compared with the prior art, the present invention has the following technical effects:

[0033] (1) It can measure the patient's blood pressure in real time with less external interference factors, and the patient can move freely without affecting the patient's normal life.

[0034] (2) The measurement results are accurate and comfortable. The wound can be sutured directly after the sphygmomanometer is implanted to avoid problems such as wound infection.

[0035] (3) Easy to implant: Long-term implantation of the sphygmomanometer can be achieved through a simple surgical operation, avoiding high surgical costs and causing no damage to blood vessels. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic structural diagram of an implantable clamp-type sphygmomanometer provided in the first embodiment of the present invention;

[0037] Figure 2 A schematic structural diagram of an implantable clamp-type sphygmomanometer provided in accordance with a second embodiment of the present invention;

[0038] Figure 3 This is a schematic structural diagram of an implantable clamp-type sphygmomanometer provided in the third embodiment of the present invention. DETAILED DESCRIPTION

[0039] The technical content of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] An embodiment of the present invention provides an implantable clamp-type sphygmomanometer, which is implanted into a blood vessel through interventional surgery so that the sphygmomanometer is clamped on the outside of the blood vessel, thereby measuring blood pressure values ​​in real time by utilizing contraction changes of the blood vessel.

[0041] First embodiment

[0042] like Figure 1 As shown, an implantable clamp-type sphygmomanometer provided by the first embodiment of the present invention includes a shell 1, a pressure layer 2, a pressure sensor 3, a communication chip 4, a communication unit 5 and a power supply unit 6. The shell 1 is used to clamp on the outside of a blood vessel. The pressure layer 2 is attached to the inner side of the shell 1 for direct contact with the blood vessel. The pressure sensor 3 and the communication chip 4 are both arranged between the shell 1 and the pressure layer 2, and are connected to each other so as to transmit the pressure generated by the contraction / expansion of the blood vessel to the pressure sensor 3 through the pressure layer 2 for blood pressure measurement, and transmit the pressure signal to the communication chip 4. The communication chip 4 is also electrically connected to the communication unit 5, so as to wirelessly transmit the pressure signal to an external device using the communication unit 5. The power supply unit 6 is used to provide electrical energy to the pressure sensor 3 and the communication chip 4.

[0043] Specifically, in this embodiment, the shell 1 is integrally formed or woven from at least one preset material, and the preset material at least includes a metal material or a polymer material. Preferably, the shell 1 is made of a material carved from a nickel-titanium alloy and subjected to heat treatment, so that when the shell 1 is outside the body, the shell 1 is in a soft and easy-to-shape state; when the shell 1 is inside the body (the temperature rises to 37°C after contacting human tissue), the shell 1 returns to the shape shaped by the heat treatment and maintains appropriate hardness and elasticity. Figure 1 As shown, the shell 1 is preformed into a ring structure with a gap (a C-shaped open ring in this embodiment, but not limited to this structure, and can also be U-shaped or other shapes) for clamping the outside of the blood vessel.

[0044] like Figure 1As shown, the pressure layer 2 is attached to the inner side of the 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 an annular capsule with a notch formed by a flexible polymer material, and the notch of the annular capsule is aligned with the notch of the shell 1 so that the shell 1 can be clamped on the outside of the blood vessel. The annular capsule has a hollow inner cavity 201, and the hollow inner cavity 201 is filled with a liquid suitable for implantation (for example: saline) or a gas (for example: carbon dioxide or other inert gases). Preferably, the pressure layer 2 is made of TPU material and is filled with saline in the hollow inner cavity 201. It can be understood that when the blood vessel contracts or expands, it can drive 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.

[0045] like Figure 1 As shown, in this embodiment, the pressure sensor 3 is arranged between the housing 1 and the pressure layer 2 for measuring blood pressure. The communication chip 4 is arranged between the housing 1 and the pressure layer 2, and is 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 according to the contraction state of the blood vessel; when the blood vessel contracts to the thinnest, the diastolic pressure is collected; when the blood vessel expands to the thickest, the systolic pressure is collected. Among them, the pressure sensor 3 and the communication chip 4 are conventional components in the field and are not elaborated in detail here.

[0046] like Figure 1 As shown, in this embodiment, the power supply unit 5 is arranged on the housing 1 and is 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 chargeable energy coil, which can be wirelessly connected to a wireless power supply device. When the external wireless power supply device is close to a certain range of the energy coil, the energy coil is wirelessly connected 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.

[0047] like Figure 1 As shown, in this embodiment, the communication unit 6 is arranged on the housing 1 and is electrically connected to the communication chip 4, and the communication unit 6 is also wirelessly connected to an external device for wirelessly transmitting the pressure signal 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 the pressure data to the communication chip 4, the communication chip 4 transmits the pressure data to the communication unit 6, and then the pressure data is wirelessly transmitted to the external device through the communication unit 6, and the data can be displayed through the display on the external device to more intuitively show the blood pressure measurement results.

[0048] The following describes in detail the use of the implantable clamp-type sphygmomanometer provided in the first embodiment of the present invention:

[0049] ① After blunt separation of skin and muscle tissue, blood vessels are exposed;

[0050] ② Slightly pry apart the outer shell 1 and the pressure layer 2 to enlarge the gap so as to clamp the outer side of the blood vessel;

[0051] ③ Bring the wireless power supply device close to the sphygmomanometer to power the pressure sensor 3 through the energy coil, and the pressure sensor 3 starts to collect pressure data;

[0052] ④ As the blood vessels continue to contract / expand, the pressure sensor 3 can collect blood pressure data throughout the process and at the microsecond level. When the blood vessels contract to the thinnest, the pressure on the pressure sensor 3 drops to the lowest, and a lowest value is collected, namely: diastolic pressure; when the blood vessels expand to the thickest, the pressure on the pressure sensor 3 increases to the highest, and the pressure sensor 3 collects a highest value, namely: systolic pressure.

[0053] In summary, the implantable clamp-type sphygmomanometer provided by the first embodiment of the present invention has the following beneficial effects:

[0054] (1) It can measure the patient's blood pressure in real time with less external interference factors, and the patient can move freely without affecting the patient's normal life.

[0055] (2) The measurement results are accurate and comfortable. The wound can be sutured directly after the sphygmomanometer is implanted to avoid problems such as wound infection.

[0056] (3) Easy to implant: Long-term implantation of the sphygmomanometer can be achieved through a simple surgical operation, avoiding high surgical costs and causing no damage to blood vessels.

[0057] Second embodiment

[0058] like Figure 2 As shown, the second embodiment of the present invention provides an implantable clamp-type sphygmomanometer, comprising 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 of this embodiment is that the pressure layer 2 is omitted, and the pressure sensor 3 is in direct contact with the blood vessel, so that the pressure sensor 3 is subjected to force, and the electrical signal conversion is performed after the force is applied.

[0059] 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 evaporation, so that the thin film pressure sensor 3 is attached to the inner side of the housing 1. Therefore, 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, so as to directly squeeze the thin film pressure sensor 3 by using the contraction change of the blood vessel to achieve blood pressure measurement.

[0060] like Figure 2 As shown, 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, the pressure data is transmitted to the communication chip 4, so that the pressure data is transmitted to the communication unit 5 through the communication chip 4, and then the pressure data is wirelessly transmitted to the external device through the communication unit 5.

[0061] In this embodiment, except for the above differences, the housing 1, the communication chip 4, the communication unit 5 and the power supply unit 6 are the same as those in the first embodiment, and will not be described in detail herein.

[0062] Third embodiment

[0063] like Figure 3 As shown, the second embodiment of the present invention provides an implantable clamp-type blood pressure meter, comprising a housing 1, a pressure sensor 3, a communication chip 4 and a communication unit 5. Compared with the first embodiment, the difference of this embodiment is that the pressure layer 2 and the power supply unit 6 are omitted, the pressure sensor 3 is in direct contact with the blood vessel, and can be self-powered.

[0064] Specifically, in this embodiment, the pressure sensor 3 is a thin film piezoelectric pressure sensor, and the thin film piezoelectric pressure sensor 3 is attached to the inner wall of the housing by evaporation, so that the thin film piezoelectric pressure sensor 3 is attached to the inner side of the housing 1. Therefore, when the housing 1 is clamped on the outside of the blood vessel, the thin film piezoelectric pressure sensor 3 can directly contact the blood vessel, so as to directly squeeze the thin film piezoelectric pressure sensor 3 by using the contraction change of the blood vessel to achieve blood pressure measurement.

[0065] In addition, in the present embodiment, the implantable clamp-type sphygmomanometer further includes an energy storage unit 7. The energy storage unit 7 is preferably a capacitor, which is disposed between the pressure sensor 3 and the inner wall of the housing 1, and the input end of the energy storage unit 7 is connected to the pressure sensor 3, and the output end of the energy storage unit 7 is connected to the communication chip 4. It can be understood that the thin film piezoelectric pressure sensor 3 can generate electrical energy as the blood vessels continue to contract and store it in the energy storage unit 7, so that the energy storage unit 7 can autonomously power the communication chip 4. As a result, there is no need to provide external functional devices, which saves production costs and improves the convenience of use (no need to consider the energy supply problem).

[0066] In this embodiment, except for the above differences, the housing 1, the communication chip 4 and the communication unit 5 are the same as those in the first embodiment, and will not be described in detail here.

[0067] Fourth embodiment

[0068] The embodiment of the present invention also provides a blood pressure monitoring system. The blood pressure monitoring system includes any one of the above-mentioned first to third embodiments of the implantable clamp-type sphygmomanometer, and also includes a display, a data analysis unit, and a data output unit. The display is used for data display, the data analysis unit is used for data analysis of the patient's blood pressure data, and the data output unit outputs the blood pressure analysis result according to the data analysis result.

[0069] It should be noted that the above embodiments are only examples, and the technical solutions of the various embodiments can be combined, all within the protection scope of the present invention.

[0070] It should be understood that the terms "upper", "lower", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0071] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0072] The above is a detailed description of the implantable clamp-type sphygmomanometer and blood pressure monitoring system provided by the present invention. For those skilled in the art, any obvious changes made to it without departing from the essence of the present invention will constitute an infringement of the patent right of the present invention and will bear corresponding legal responsibilities.

Claims

1. An implantable clamp-type sphygmomanometer, characterized in that include: The outer shell is preformed into a ring structure with a notch so as to be clamped on the outside of the blood vessel; A pressure sensor is disposed inside the housing to measure blood pressure; A communication chip is arranged inside the housing and connected to the pressure sensor to receive a pressure signal transmitted by the pressure sensor; a power supply unit, disposed on the housing and electrically connected to the pressure sensor, for supplying power to the pressure sensor; a communication unit, which is disposed on the housing and electrically connected to the communication chip, and the communication unit is also wirelessly connected to an external device to wirelessly transmit the pressure signal to the external device; The pressure sensor monitors the current blood pressure value in real time according to the contraction state of the blood vessels; when the blood vessels contract to the thinnest, the diastolic pressure is collected; when the blood vessels expand to the thickest, the systolic pressure is collected.

2. The implantable clamp-type sphygmomanometer according to claim 1, characterized in that Also includes: A pressure layer, attached to the inner side of the housing and covering the pressure sensor and the communication chip, so as to be in direct contact with the blood vessel; The contraction of the blood vessels can drive the pressure layer to undergo elastic deformation, so as to squeeze the pressure sensor through the pressure layer, thereby measuring blood pressure.

3. The implantable clamp-type sphygmomanometer according to claim 2, characterized in that: The pressure layer is made of a flexible polymer material to form an annular capsule with a gap, and the annular capsule has a hollow inner cavity filled with liquid or gas suitable for implantation.

4. The implantable clamp-type sphygmomanometer according to claim 1, characterized in that: The pressure sensor is a thin film pressure sensor, and the thin film pressure sensor is attached to the inner side of the housing so as to be in direct contact with the blood vessel; The communication chip is located between the thin film pressure sensor and the inner wall of the housing.

5. The implantable clamp-type sphygmomanometer according to claim 4, characterized in that: The thin film pressure sensor is attached to the inner wall of the housing by evaporation.

6. The implantable clamp-type sphygmomanometer according to claim 1, characterized in that Also includes: An energy storage unit is disposed between the pressure sensor and the inner wall of the housing, wherein an input end of the energy storage unit is connected to the pressure sensor, and an output end of the energy storage unit is connected to the communication chip; Among them, the pressure sensor is a thin film piezoelectric pressure sensor, which can generate electrical energy and store it in the energy storage unit as the blood vessels continue to contract, so that the energy storage unit can autonomously supply energy to the communication chip.

7. The implantable clamp-type sphygmomanometer according to claim 1, characterized in that: The shell is formed by integral molding or braiding of at least one preset material; The preset material at least includes a metal material or a polymer material.

8. The implantable clamp-type sphygmomanometer according to claim 7, characterized in that: The shell is carved from nickel-titanium alloy and shaped into a preset shape through heat treatment; When outside the body, the shell is in a soft and easily shaped state; when inside the body, the shell returns to the shape shaped by heat treatment and maintains appropriate hardness and elasticity.

9. The implantable clamp-type sphygmomanometer according to claim 1, characterized in that: The power supply part is an energy coil wound on the shell, and the communication part is a communication coil wound on the shell.

10. A blood pressure monitoring system, characterized in that The invention comprises the implantable clamp-type sphygmomanometer as described in any one of claims 1 to 9.

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