Implantable pulmonary arterial pressure monitoring device based on stent system

Abstract

An implantable pulmonary arterial pressure monitoring device based on a stent system comprises an outer-layer stent, and a pressure sensing module and a signal processing module are oppositely arranged on the inner side of the outer-layer stent; the pressure sensing module and the signal processing module are fixed to the inner side of the outer-layer support through film materials. The pressure sensing module is used for measuring a pulmonary artery pressure signal, the signal processing module comprises a signal processing unit and a wireless communication unit, and the signal processing unit is electrically connected with the pressure sensing module; and the signal processing unit is used for processing the pulmonary artery pressure signal and transmitting the pulmonary artery pressure signal to the outside through the wireless communication unit. The device can be stably fixed on the pulmonary artery branch, and the accuracy and the stability of monitoring data are improved.

Description

Technical Field

[0001] The utility model relates to the field of implantable pulmonary artery pressure monitoring, and particularly to an implantable pulmonary artery pressure monitoring device based on a stent system. Background Art

[0002] Chronic heart failure (HF) is the end-stage manifestation of various heart diseases. The most important manifestation of acute exacerbation of HF is pulmonary congestion, which subsequently triggers acute clinical symptoms such as dyspnea. Before the patient is hospitalized due to HF, abnormal changes in hemodynamics can already be monitored, such as a significant increase in pulmonary artery pressure. Therefore, real-time monitoring of pulmonary artery pressure helps to detect the changes in the condition of HF patients at an early stage, timely adjust the treatment plan, thereby controlling the condition, delaying the progression of the disease to a critical condition, and improving the quality of life and prognosis of the patients.

[0003] Currently, there are mainly three ways to monitor pulmonary artery pressure clinically: transthoracic echocardiogram (TTE), right heart floating catheter, and implantable pulmonary artery monitoring device. Among them, the implantable pulmonary artery monitoring device is a wireless pressure-sensitive device using microelectromechanical system technology. It is directly implanted into the pulmonary artery branch and can realize wireless monitoring and transmission of pulmonary artery pressure. However, this flexible sheet design cannot be stably fixed in the pulmonary artery branch, and the collected signals may be interfered by factors such as body position changes. Summary of the Utility Model

[0004] The purpose of the present invention is to provide an implantable pulmonary artery pressure monitoring device based on a stent system, which can stably fix the device to the pulmonary artery branch and improve the accuracy and stability of monitoring data.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An implantable pulmonary artery pressure monitoring device based on a stent system, the device includes: an outer stent, and a pressure sensing module and a signal processing module are relatively arranged on the inner side of the outer stent;

[0007] Both the pressure sensing module and the signal processing module are fixed to the inner side of the outer stent through a membranous material;

[0008] The pressure sensing module is used to measure the pulmonary artery pressure signal. The signal processing module includes a signal processing unit and a wireless communication unit. The signal processing unit is electrically connected to the pressure sensing module and is used to process the pulmonary artery pressure signal and transmit the pulmonary artery pressure signal to the outside through the wireless communication unit.

[0009] Preferably, it further includes a user terminal, and the user terminal is used to wirelessly receive the pulmonary artery pressure signal and analyze it, and display the corresponding pulse pressure data through a display interface.

[0010] Preferably, the membranous material is pasted on the inner side of the outer stent through a biocompatible hydrogel.

[0011] Preferably, the membranous material includes one of polycaprolactone, polyethylene glycol, and poly(lactic-co-glycolic acid).

[0012] Preferably, the outer stent is made of cobalt-chromium alloy.

[0013] Preferably, the outer stent is a balloon stent.

[0014] Preferably, the pressure sensing module includes a triboelectric nanogenerator.

[0015] Preferably, the outer surface of the membranous material has a drug-eluting coating.

[0016] The advantages of the present utility model are as follows:

[0017] The present utility model utilizes an outer stent to integrate a pulmonary artery pressure monitoring module and combines it with an external user terminal to realize a device specifically for pulmonary artery pressure monitoring. Compared with the traditional technology, the pulmonary artery pressure monitoring module adopts a stent-integrated design, which can stably release and fix to the pulmonary artery branch, realize continuous and stable acquisition of pulmonary artery pressure data, is not easily dislocated, has better safety, and provides better long-term continuous and stable monitoring effects for heart failure patients. Brief Description of the Drawings

[0018] Figure 1 is a schematic diagram of the main structure of an implantable pulmonary artery pressure monitoring device based on a stent system of the present utility model;

[0019] Figure 2 is a schematic diagram of the structure of a signal processing module of the present utility model;

[0020] [[ID=~]] Figure 3 ~ is an exploded schematic diagram of the structure of a signal processing module of the present utility model;

[0021] Figure 4 is a schematic diagram of the structure of a pressure sensing module of the present utility model;

[0022] Figure 5 is an exploded schematic diagram of the structure of a pressure sensing module of the present utility model;

[0023] Figure 6 is a schematic diagram of the usage state of an implantable pulmonary artery pressure monitoring device based on a stent system of the present utility model. Detailed Description of the Embodiments

[0024] The following further describes the present utility model in detail with reference to the drawings and embodiments.

[0025] See the appendix Figures 1 to 6 Figures 1 to 6 shows the main structure of an implantable pulmonary artery pressure monitoring device based on a stent system. The device includes an outer stent 1, and a pressure sensing module 2 and a signal processing module 3 are relatively arranged inside the outer stent 1. The pressure sensing module 2 and the signal processing module 3 are connected by a signal transmission line 3. Separating the pressure sensing module 2 and the signal processing module 3 is to ensure that the pressure sensing module 2 is not affected by the sensing of the signal processing module 3 and to ensure the measurement accuracy. Both the pressure sensing module 2 and the signal processing module 3 are fixed to the inside of the outer stent 1 through a membranous material 4. Specifically, both the pressure sensing module 2 and the signal processing module 3 are pasted on a membranous material 4, and the membranous material 4 is located inside the pressure sensing module 2 and the signal processing module 3, so as to prevent the pressure sensing module 2 and the signal processing module 3 from contacting with blood. The surface area of the membranous material 4 is larger than the surface area of either the pressure sensing module 2 or the signal processing module 3 to ensure that the membranous material 4 completely covers the pressure sensing module 2 or the signal processing module 3. The edge part of the membranous material 4 is pasted to the inside of the outer stent 1 through a biocompatible hydrogel. Accordingly, it plays a role in fixing the pressure sensing module 2 and the signal processing module 3 and also prevents the pressure sensing module 2 and the signal processing module 3 from directly contacting with blood.

[0026] Among them, the pressure sensing module 2 is used to measure the pulmonary artery pressure signal. The signal processing module 3 includes a signal processing unit 5 and a wireless communication unit 6. The two sides of the signal processing unit 5 and the wireless communication unit 6 are encapsulated together by two encapsulation films 7. The signal processing unit 5 is electrically connected to the pressure sensing module 2 and is used to process the pulmonary artery pressure signal and transmit the pulmonary artery pressure signal to the outside through the wireless communication unit 6. Here, the signal processing is for data conversion to facilitate wireless transmission of the pulmonary artery pressure signal to the outside through the wireless communication unit 6.

[0027] The pressure sensing module 2 includes a triboelectric nanogenerator, which includes a composite triboelectric material layer 8. Electrode layers 9 are respectively arranged on both sides of the composite triboelectric material layer 8, and the electrode layers 9 are encapsulated by two encapsulation layers 10. This triboelectric nanogenerator is a prior art, and specifically, it can also refer to the patent document (CN 213430080 U), which will not be elaborated here. The pulmonary artery pressure monitoring module is implanted into the body of a heart failure patient together with the outer stent 1 to measure the pulmonary artery pressure signal of the subject, and the pulmonary artery pressure signal is transmitted to the outside wirelessly.

[0028] The size range of the pressure sensing module 2 is as follows: the thickness is about 0.3 mm, the length is 10 mm, the width is 5 mm, and it is rhombic. The material of the encapsulation layer 10 can be an insulating material with good biocompatibility and blood compatibility, such as polylactic acid, polycaprolactone, polyvinyl alcohol, polytetrafluoroethylene, rubber, etc., or it can also be some composite materials, and the thickness is about 0.1 mm.

[0029] The device further includes a user terminal 11, which is used to wirelessly receive and analyze the pulmonary artery pressure signal, and display the corresponding pulmonary artery pressure data through a display interface. The user terminal 11 can be a mobile phone, a tablet computer or a computer.

[0030] The outer stent 1 provides a basis for fixing and supporting the pressure sensing module 2 and the signal processing module 3. Preferably, the outer stent 1 is a balloon stent, and the outer stent 1 has the ability to bend and stretch to a certain extent to adapt to the diameter and shape of the pulmonary artery. The material of the outer stent 1 is selected from cobalt-chromium alloy, polymer, etc., which has sufficient strength and elasticity to provide the necessary supporting force and stability. During implantation, the entire outer stent 1 and its attachments are expanded through a balloon to ensure the firm implantation of the stent.

[0031] The membranous material 4 includes polycaprolactone, polyethylene glycol, poly(lactic-co-glycolic acid), etc. The outer surface of the membranous material 4 can also have a drug-eluting coating or a nanostructured coating to promote the growth of vascular endothelial cells or prevent thrombosis.

[0032] In the utility model, the pressure sensing module and the signal processing module are integrated into the outer stent, the device is firmly fixed, can work stably for a long time, and the measured data is more accurate.

[0033] The above is the preferred embodiment of the utility model and the technical principles applied. For those skilled in the art, any obvious changes such as equivalent transformation and simple replacement based on the technical solution of the utility model without departing from the spirit and scope of the utility model shall fall within the protection scope of the utility model.

Claims

1. An implantable pulmonary artery pressure monitoring device based on a stent system, characterized in that The device includes: an outer stent, with a pressure sensing module and a signal processing module oppositely arranged inside the outer stent; Both the pressure sensing module and the signal processing module are fixed to the inside of the outer stent by a membranous material; The pressure sensing module is used to measure the pulmonary artery pressure signal. The signal processing module includes a signal processing unit and a wireless communication unit. The signal processing unit is electrically connected to the pressure sensing module, and is used to process the pulmonary artery pressure signal and transmit the pulmonary artery pressure signal to the outside through the wireless communication unit.

2. The implantable pulmonary artery pressure monitoring device based on the stent system according to claim 1, wherein It further includes a user terminal, which is used to wirelessly receive and analyze the pulmonary artery pressure signal, and display the corresponding pulse pressure data through a display interface.

3. The implantable pulmonary artery pressure monitoring device based on the stent system according to claim 1, wherein The membranous material is pasted to the inside of the outer stent by a biocompatible hydrogel material.

4. The implantable pulmonary artery pressure monitoring device based on a stent system according to claim 1, wherein, The membranous material includes one of polycaprolactone, polyethylene glycol, and poly(lactic-co-glycolic acid).

5. The implantable pulmonary artery pressure monitoring device based on the stent system according to claim 1, characterized in that, The outer stent is made of cobalt-chromium alloy.

6. The implantable pulmonary artery pressure monitoring device based on the stent system according to claim 1, wherein The outer stent is a balloon stent.

7. The implantable pulmonary artery pressure monitoring device based on the stent system according to claim 1, characterized in that, The pressure sensing module includes a triboelectric nanogenerator.

8. The implantable pulmonary artery pressure monitoring device based on the stent system according to claim 1, wherein The outer surface of the membranous material has a drug eluting coating.

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