CN114916922B - Left atrium hemodynamics monitoring system for intensive care unit - Google Patents
Left atrium hemodynamics monitoring system for intensive care unit Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/01—Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/0215—Measuring pressure in heart or blood vessels by means inserted into the body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/026—Measuring blood flow
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
- A61B5/6867—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive specially adapted to be attached or implanted in a specific body part
- A61B5/6869—Heart
Abstract
The invention provides a left atrial hemodynamic monitoring system for an intensive care unit, and belongs to the technical field of health monitoring. The monitoring system comprises a patient end and a nursing end, wherein the patient end comprises a data storage assembly, an implantable sensor, a lead and a wireless transmission unit; the implantable sensor is used for collecting left atrial state data, transmitting the left atrial state data to the data storage component through a lead, and forwarding the left atrial state data to the nursing end through the data storage component; the implantable sensor is provided with an anchoring device, and the size of the anchoring device can be adjusted; and the nursing end carries out dynamics analysis according to a first preset period, and switches the acquisition mode of the implantable sensor according to the result of the dynamics analysis. And the data storage component stores the state data by adopting an annular stack. The hemodynamic monitoring system provided by the invention can be used for monitoring the left atrial state of a patient in an intensive care unit, can adjust a monitoring mode in a self-adaptive manner, and ensures the health of the patient and simultaneously makes data monitoring more targeted.
Description
Technical Field
The invention belongs to the technical field of health monitoring, and particularly relates to a left atrium hemodynamic monitoring system for an intensive care unit.
Background
In clinical medicine, the hemodynamic information in the left atrium of the heart needs to be collected under many conditions, and a conventional monitoring method is to enter a catheter for measurement from the superior vena cava, extend one end of the catheter into the left atrium, and simply suture and fix the catheter with the endocardial tissue of the left atrium, and directly pull out the catheter after use, so that bleeding is very easy to occur during pulling out, and unsafe accidents can be caused.
Furthermore, it has been reported that the rise in left atrial pressure is also a characteristic manifestation of cardiac function decompensation, and the clinical lack of accurate assessment of left atrial pressure is an indicator, and the direct measurement of left atrial pressure is helpful for early detection and treatment of chronic heart failure, such as the left atrial pressure monitoring device HeartPOD. However, when the device is used for chronic heart failure patients, most of the devices are directed to common clinical or remote home environments of the patients, the working mode is single, the whole working state parameters cannot be adjusted in size after the thickness is adjusted along with the actual situation change of different patients, and the size cannot be changed again once being adjusted, namely the device is in a fixed state. The prior art also has simpler left atrial hemodynamic monitoring devices for use in intensive care units, such as utility model CN213940726U.
However, in clinical severe environment, especially in intensive care unit environment, the heart rate and respiratory state of the patient may change significantly at any time, which may cause the real-time atrial septal thickness to change, at this time, the anchoring device on the sensor in the fixed state cannot be adjusted in time, and the acquisition mode of the sensor cannot be dynamically feedback-adjusted, which may cause the implantable left heart pressure monitoring device, i.e. cannot be applied to continuous full-flow monitoring in clinical intensive care unit environment.
Disclosure of Invention
In order to solve the technical problem, the invention provides a left atrium hemodynamics monitoring device for an intensive care unit, which can adjust a monitoring mode in a self-adaptive mode, and ensures that data monitoring is more targeted while ensuring the health of a patient.
The technical scheme of the invention comprises a patient end and a nursing end, wherein:
the patient end is arranged on a patient in an intensive care unit and is in communication connection with the nursing end;
in particular, the patient end may be a wearable device assembly.
The patient end comprises a data storage component, an implantable sensor, a lead and a wireless transmission unit;
the implantable sensor is used for collecting left atrial state data, transmitting the state data to the data storage component through the lead and forwarding the state data to the nursing end through the data storage component;
the implantable sensor is configured with an anchoring device that is adjustable in size;
and the nursing end receives the state data forwarded by the patient end, performs dynamic analysis according to a first preset period, and switches the acquisition mode of the implantable sensor according to the result of the dynamic analysis.
In the invention, different acquisition modes correspond to different acquisition mode parameter settings;
the acquisition mode parameter is one of the following parameters or any combination thereof:
the single acquisition duration of the implantable sensor, the acquired state data combination and the set size of the anchoring device;
the left atrial state data includes left atrial pressure, left atrial temperature, intracardiac electrocardiogram, and sensor acquisition duration.
As an improvement, the data storage component comprises a state data preprocessing unit;
and the data storage component forwards the state data to the nursing end after the state data is preprocessed by the state data preprocessing unit.
The monitoring system is powered by a wireless radio frequency transmission system.
In one aspect, the performing, by the care end, a dynamics analysis according to a first preset period after receiving the status data forwarded by the patient end, and switching an acquisition mode of the implantable sensor according to a result of the dynamics analysis specifically includes:
receiving k left atrial pressure sampling data { P) forwarded by the patient end within the first preset period 1 ,P 2 ,…P k And k left atrial body temperature sampling data { T } 1 ,T 2 ,…T k }，k>2；
Calculating a left atrium pressure-left atrium body temperature matching change value PT according to the fitting relation f;
wherein PT = f (P) s ,T s ,W,M,T)；
P s A pressure data set formed by k left atrial pressure sampling data;
T s a body temperature data set formed by k left atrial body temperature sampling data;
m is the size value of the anchoring device set in the first preset period;
w is the BMI index of the patient;
t is the length of the first preset period;
judging whether the difference value of the left atrial pressure-left atrial body temperature matching change value PT and a preset standard value ST is in a preset range;
if yes, increasing the sensor acquisition time length and the first preset period.
If not, the acquisition time length of the sensor is reduced and the first preset period is shortened, and if the state data forwarded by the nursing end receiving the patient end does not contain the intracardiac electrocardiogram data, the nursing end informs nursing staff to adjust the acquisition mode of the implantable sensor, so that the implantable sensor acquires the left atrial pressure, the left atrial body temperature and the intracardiac electrocardiogram synchronously.
In another aspect, after receiving the status data forwarded by the patient end, the care end performs a dynamics analysis according to a first preset period, and switches an acquisition mode of the implantable sensor according to a result of the dynamics analysis, which specifically includes:
receiving a current intracardiac electrocardiogram curve Scur forwarded by the patient end within the first preset period, wherein the current intracardiac electrocardiogram curve Scur comprises a plurality of sampling points;
performing sampling point matching on the current intracardiac electrocardiogram curve Scur and the last intracardiac electrocardiogram curve Spre forwarded by the patient end received last time;
and if the sampling points exceeding the first preset number cannot be matched, the nursing end informs a nursing staff to adjust the size of the anchoring device.
If the sampling points exceeding the first preset number can be matched, switching the acquisition mode of the implantable sensor, so that the implantable sensor acquires the left atrial pressure and the left atrial body temperature in a first time period and acquires the intracardiac electrocardiogram in a second time period, wherein the first time period is different from the second time period.
As a further improvement of the present invention, the data storage component stores the state data using a ring stack.
Specifically, the ring stack comprises a first layer ring stack, a second layer ring stack and a third layer ring stack;
the first layer ring stack is used for storing left atrial pressure data;
the second layer of ring stack is used for storing left atrium body temperature data;
the third layer of ring stack is used for storing intracardiac electrocardiogram data;
the third layer of ring stack is the innermost layer of ring stack.
When one of the first layer ring stack or the second layer ring stack is full,
the data storage component forwards the status data to the care end.
The hemodynamic monitoring system provided by the invention can be used for monitoring the left atrial state of a patient in an intensive care unit, and can adjust a monitoring mode in a self-adaptive manner, so that the data monitoring is more targeted while the health of the patient is ensured; in addition, the invention can avoid data transmission conflict between a plurality of patient terminals and the nursing terminal and avoid data overflow or data blockage by adopting the mode of storing different levels of annular stacks by using different state data and forwarding the data when the annular stacks are full.
Further advantages of the invention will be apparent in the detailed description section in conjunction with the drawings attached hereto.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of the components of a left atrial hemodynamic monitoring system for use in an intensive care unit in accordance with one embodiment of the present invention;
FIG. 2 is a detailed schematic diagram of the patient end of the left atrial hemodynamic monitoring system for an intensive care unit of one embodiment of the present invention;
FIG. 3 is a schematic diagram of the left atrial hemodynamic monitoring system of FIG. 1 configured for use in an intensive care unit when the system includes multiple patient ends;
FIG. 4 is a schematic diagram of a parallel architecture of multiple patient sides of the schematic diagram of FIG. 3;
FIG. 5 is a schematic view of the adjustment of the operational mode of the left atrial hemodynamic monitoring system for an intensive care unit in accordance with one embodiment of the present invention;
FIG. 6 is a flow chart of an acquisition mode control for a left atrial hemodynamic monitoring system for an intensive care unit in one aspect of an embodiment of the present disclosure;
FIG. 7 is a flow chart of an acquisition mode control for a left atrial hemodynamic monitoring system for use in an intensive care unit of an embodiment of the present invention in another scenario.
Detailed Description
The invention is further described with reference to the following drawings and detailed description.
Before describing various embodiments of the present invention, concepts and principles related to the technical aspects of the present invention will be described. These principles and concepts will help one skilled in the art better understand the improvements of the present invention and its benefits.
For implantable hemodynamic monitoring, there are three types of implantable hemodynamic monitoring systems including right ventricular pressure, left atrial pressure, and wireless pulmonary artery pressure monitoring devices. These devices remotely monitor and manage CHF (chronic heart failure) patients by monitoring blood pressure, heart rate, weight, and other indicators.
For example, heartpdo (st. Judmedical inc, minneapolis) was first used in CHF patients in 2007.
The prior art is described in:
[1]Ritzema J,Melton I C,RichardsAM,et al.Direct left atrial pressure monitoring in ambulatory heart failure patients:initial experience with a new permanent implantable device.[J].Circulation,2007,116(25):2952-2959.
the left atrial pressure rise is a characteristic representation of cardiac function decompensation, and the direct measurement of left atrial pressure is helpful for early detection and treatment of acute exacerbation of CHF due to the clinical lack of accurate assessment of left atrial pressure.
An implantable left heart pressure monitoring device in practical use by the inventor is used for CHF patients and consists of an implantable sensor, a lead, a subcutaneous induction coil external patient interrogation module and computer software of a physician. After femoral vein puncture, the sensor is sent to the right atrium through the conveying system, and the sensing system is implanted to the left atrium side of the interatrial septum through interatrial puncture; the sensor is provided with an anchoring device which can be adjusted according to the thickness of the atrial septum and is fixed on the atrial septum. Can carry out safe and accurate continuous hemodynamics monitoring on CHF patients.
The inventor has found that when the device is used in a CHF patient, most of the devices are used in a common clinical or remote home environment of the patient, the working mode is single, the parameters of the whole working state can not be adjusted along with the change of the actual conditions of different patients, especially the anchoring device on the sensor can only be adjusted in size after roughly sensing the thickness of the interatrial septum after implantation, and the size can not be changed again after being adjusted, namely is in a fixed state.
However, in clinical intensive care environments, especially in intensive care unit environments, the heart rate and the respiratory state of a patient may change significantly at any time, which may cause a change in the real-time atrial septal thickness, at this time, the anchoring device on the sensor in a fixed state cannot be adjusted in time, and the acquisition mode of the sensor cannot be dynamically feedback-adjusted, which may cause the implantable left cardiac pressure monitoring device to be not applicable to clinical intensive care unit environments.
Therefore, the invention provides a corresponding improved technical scheme.
FIG. 1 is a schematic diagram of the components of a left atrial hemodynamic monitoring system for use in an intensive care unit in accordance with one embodiment of the present invention.
In fig. 1, the left atrial hemodynamic monitoring system for intensive care units is shown to include a patient end and a care end; the patient end is installed in the intensive care unit patient, and with nursing end communication connection.
As a specific example, the patient end includes at least one wearable component to facilitate its wearing with an intensive care unit patient.
More particularly, referring to FIG. 2, FIG. 2 is a schematic diagram of a patient end of a left atrial hemodynamic monitoring system for use in an intensive care unit, according to one embodiment of the present invention.
In fig. 2, the patient side includes a data storage assembly, an implantable sensor, a lead, and a wireless transmission unit.
It can be seen that a portion of the patient-end member shown in fig. 2 can be directly used with the existing implantable left heart pressure monitoring device, heartPOD, and in the specific configuration, the sensor is delivered to the right atrium via the delivery system after the femoral vein puncture, and the sensing system is implanted on the left atrium side of the interatrial septum via the interatrial puncture.
However, as an improvement of the present invention, the implantable sensor is provided with an anchoring device that is adjustable in size.
The size is adjustable, that is, the size of the anchoring device can be adjusted in position based on the change of the atrial septal thickness represented by the current state data in different acquisition modes.
Specific acquisition mode variations will be described in detail in the examples section that follows. Here, it can be understood that different anchoring positions correspond to different acquisition modes of the sensor, and are no longer fixed anchoring modes, and it is considered that in an intensive care unit environment, a heart rate and a respiratory state of a patient may be significantly changed at any time, so that a real-time atrial septal thickness (relative cavity position) may be changed, and the actual health state of the patient in the intensive care unit is more consistent.
The monitoring system is powered by a wireless radio frequency transmission system.
Similar to the existing implantable left heart pressure monitoring device HeartPod, the device supplies energy and monitors data such as the left atrial pressure body temperature and the intracardiac electrocardiogram through the PAM 125kHz wireless radio frequency transmission system.
It should be understood that, the patient side of the present invention is located at the patient side, and the technical solution of the present invention can be applied to a plurality of patient sides at the same time, that is, a plurality of intensive care unit patients correspond to one nursing end, or N intensive care unit patients correspond to M nursing ends,
represents rounding down; 5363 and all N, K are positive integers greater than 2, and M is greater than or equal to 1.
For convenience of description, in fig. 3-4, for example, N =2, m =1, fig. 3 is a schematic structural diagram of the left atrial hemodynamic monitoring system of fig. 1 used in an intensive care unit when the system includes a plurality (2) of patient ends;
fig. 4 is a schematic diagram of a parallel architecture of multiple (2) patient sides of the schematic diagram of fig. 3.
In the patient end of fig. 2 or 4, the implantable sensor is used to acquire left atrial state data and transmit the state data over the lead to the data storage assembly and relayed by the data storage assembly to the care end.
Preferably, the data storage component comprises a state data preprocessing unit; and the data storage component forwards the state data to the nursing end after the state data is preprocessed by the state data preprocessing unit.
The preprocessing includes various data preprocessing modes, such as explicit repeated data elimination, explicit error data elimination, noise filtering, data smoothing, and the like, which is not limited in this embodiment of the present invention, and a person skilled in the art may determine a corresponding preprocessing mode according to an attribute of actually acquired state data.
Fig. 5 is a schematic diagram illustrating adjustment of the operation mode of the left atrial hemodynamic monitoring system for an intensive care unit according to an embodiment of the present invention, that is, after the care end receives the status data forwarded by the patient end, the care end performs a kinetic analysis according to a first preset period, and switches the acquisition mode of the implantable sensor according to the result of the kinetic analysis; different acquisition modes correspond to different acquisition mode parameter settings;
the acquisition mode parameter is one of the following parameters or any combination thereof:
the single acquisition time of the implantable sensor, the acquired state data combination and the set size of the anchoring device;
the left atrial state data includes left atrial pressure, left atrial temperature, intracardiac electrocardiogram, and sensor acquisition duration.
It can be seen that the acquisition modes have different acquisition mode parameter determinations;
as illustrative examples:
when in acquisition mode A, the single acquisition time of the implantable sensor is tA, and the left atrial pressure and the left atrial temperature are acquired;
when in acquisition mode B, the single acquisition time of the implantable sensor is tB, and an intracardiac electrocardiogram is acquired;
when in the acquisition mode C, the single acquisition time of the implantable sensor is tC, and the acquisition is to acquire an intracardiac electrocardiogram and then acquire left atrial pressure and left atrial body temperature;
when in acquisition mode D, a single acquisition of the implantable sensor is for a period of tD and acquires intracardiac electrocardiogram, left atrial pressure and left atrial temperature simultaneously.
Fig. 6-7 show the switching control principle of the acquisition mode for two different situations.
FIG. 6 is a flow chart illustrating control of an acquisition mode of a left atrial hemodynamic monitoring system for an intensive care unit in one aspect of the present disclosure.
After receiving the state data forwarded by the patient end, the nursing end performs dynamics analysis according to a first preset period, and switches the acquisition mode of the implantable sensor according to the result of the dynamics analysis, which specifically includes:
receiving k left atrial pressure sampling data { P) forwarded by the patient end within the first preset period 1 ,P 2 ,…P k And k left atrial body temperature sampling data { T } 1 ,T 2 ,…T k }，k>2；
Calculating a left atrium pressure-left atrium body temperature matching change value PT according to the fitting relation f;
wherein PT = f (P) s ,T s ,W,M,T)；
P s A pressure data set formed by k left atrial pressure sampling data;
T s a body temperature data set formed by k left atrial body temperature sampling data;
m is the size value of the anchoring device set in the first preset period;
w is the BMI index of the patient;
t is the length of the first preset period;
it will be appreciated that the size of the anchoring device is adjusted to track the thickness of the interatrial septum, thereby enabling the sensor to be secured to the interatrial septum.
Judging whether the difference value of the left atrial pressure-left atrial body temperature matching change value PT and a preset standard value ST is in a preset range;
if yes, increasing the sensor acquisition time length and the first preset period.
If not, the acquisition time length of the sensor is reduced and the first preset period is shortened, and if the state data forwarded by the nursing end receiving the patient end does not contain the intracardiac electrocardiogram data, the nursing end informs nursing staff to adjust the acquisition mode of the implantable sensor, so that the implantable sensor acquires the left atrial pressure, the left atrial body temperature and the intracardiac electrocardiogram synchronously.
In the above embodiments, the BMI Index is a Body Mass Index (Body Mass Index), which is called Body Mass Index for short, and is a standard that is commonly used internationally to measure the Body fat and Body health.
The calculation formula is as follows:
(weight unit: kg; height unit: m.)
As a further improvement of the present invention, an experimental preferred embodiment of the above fitting relation is as follows:
it can be seen that the above formula takes (P) into account s ,T s W, M, T) and the like, and accords with the clinical sampling rule, and preferably T belongs to [0,2 ] during actual execution]The unit is seconds.
Wherein the content of the first and second substances,
meaning for all P 1 ,P 2 ,…P k }、{T 1 ,T 2 ,…T k Performs a difference calculation and then sums squared differences every two different Pm, pn (Tm, tn) in the symbol, so this sigma symbol does not show superscripts and subscripts, but those skilled in the art know that Pm, pn, tm, tn ∈ { P } 1 ,P 2 ,…P k }。
And judging whether the difference value of the left atrial pressure-left atrial body temperature matching change value PT and a preset standard value ST is in a preset range.
The preset standard value ST herein may be statistically derived from clinical experiments, and as a preference,
In fig. 7, after receiving the state data forwarded by the patient end, the nursing end performs a dynamics analysis according to a first preset period, and switches an acquisition mode of the implantable sensor according to a result of the dynamics analysis, which specifically includes:
receiving a current intracardiac electrocardiogram curve Scur forwarded by the patient end within the first preset period, wherein the current intracardiac electrocardiogram curve Scur comprises a plurality of sampling points;
performing sampling point matching on the current intracardiac electrocardiogram curve Scur and the last intracardiac electrocardiogram curve Spre forwarded by the patient end received last time;
and if the sampling points exceeding the first preset number cannot be matched, the nursing end informs a nursing staff to adjust the size of the anchoring device.
The sensor is provided with a nickel-titanium alloy anchoring device, and the size of the sensor can be adjusted according to the interatrial septum thickness adjusting instruction input by a nursing staff.
Specifically, as a preferred embodiment, the interatrial interval thickness adjustment instruction input by the caregiver may be an interatrial interval thickness adjustment instruction obtained by fitting according to the current patient state parameters, including size change instructions of different atrial/ventricular cavities; or may be an input analog size change command to cause the anchoring device to consider that the atrial septum thickness has changed, thereby changing the anchoring size.
Because anchoring device can trail room interval thickness adjustment size automatically to the realization is fixed the sensor on the room interval.
It will be understood, of course, that the adjustments herein are very fine adjustments, but since even fine adjustments in the atrial/ventricular chambers are fed back to subsequent changes in state parameters, a closed loop adaptive feedback is formed, with more targeted results than complete quiescence.
If the sampling points exceeding the first preset number can be matched, switching the acquisition mode of the implantable sensor, so that the implantable sensor acquires the left atrial pressure and the left atrial body temperature in a first time period and acquires the intracardiac electrocardiogram in a second time period, wherein the first time period is different from the second time period.
It will be appreciated that each electrocardiogram comprises a plurality of time-sampled values, and that the matching of the sampled points is performed by shifting different electrocardiogram curves to the same starting point, and the number of coincident sampled points is monitored.
It will be appreciated that the above procedure is performed as a continuous cyclic periodic sampling, and if there is currently no "last intracardiac electrogram curve Spre forwarded by the patient side received last time", the next cycle is waited for.
It has been mentioned above that the solution of the invention can be applied to multiple patient sides simultaneously, i.e. multiple intensive care unit patients correspond to one patientA plurality of nursing terminals, which can also be M nursing terminals corresponding to N intensive care unit patients,
represents rounding down; 5363 and all N, K are positive integers greater than 2, and M is greater than or equal to 1.
When the number of N is much larger than M, for example, k is larger than 10, there may be a problem of data transmission collision or even blocking between the patient side and the nursing side, which endangers the health of the patient, but also maintains the balance between data processing and feedback and data communication bandwidth.
To this end, the invention proposes further improved embodiments as follows:
and the data storage component stores the state data by adopting an annular stack. The ring stack comprises a first layer of ring stack, a second layer of ring stack and a third layer of ring stack.
During specific storage, the first layer ring stack is used for storing left atrial pressure data; the second layer ring stack is used for storing left atrium body temperature data; the third layer of ring stack is used for storing intracardiac electrocardiogram data; the third layer of ring stack is the innermost layer of ring stack.
During specific data forwarding, when one of the first layer ring stack or the second layer ring stack is full, the data storage component forwards the state data (namely the left atrial pressure data and the left atrial temperature data) to the nursing end;
of course, the data storage component page forwards the status data (now intracardiac electrocardiogram data) to the care-end when the third layer of the ring stack is full.
A full stack means that the storage space of the ring stack of the layer is full.
The structure of the ring stack can avoid data overflow, and meanwhile, the full stack sending mode can avoid that each nursing terminal always occupies a communication path with the nursing terminal. The stack size of each layer of the ring stack can be freely adjusted to change the period of the "full stack".
The hemodynamic monitoring system can be used for monitoring the left atrial state of a patient in an intensive care unit, can adaptively adjust a monitoring mode, and ensures the health of the patient and makes data monitoring more targeted; in addition, the invention can avoid the data transmission conflict between a plurality of patient ends and the nursing end and avoid data overflow or data blockage by adopting the mode of storing different levels of annular stacks by adopting different state data and forwarding the data when the annular stacks are full.
In addition, different embodiments of the present invention respectively solve one or more technical problems mentioned in the background art and achieve corresponding technical effects, and different combinations of the embodiments can solve all the mentioned technical problems and achieve all the technical effects; however, it is not required that every single embodiment of the present invention solve all technical problems or achieve all improvements. The solution to a problem or the improved corresponding embodiment of a single technical effect may both constitute independent technical solutions of the present invention.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
The present invention is not limited to the specific module structure described in the prior art. The prior art mentioned in the background section can be used as part of the invention to understand the meaning of some technical features or parameters. The scope of the present invention is defined by the claims.
Claims (10)
1. The utility model provides a left atrium hemodynamics monitoring system for intensive care unit, monitoring system includes patient end and nursing end, its characterized in that:
the patient end is arranged on a patient in an intensive care unit and is in communication connection with the nursing end;
the patient end comprises a data storage assembly, an implantable sensor, a lead and a wireless transmission unit;
the implantable sensor is used for collecting left atrial state data, transmitting the state data to the data storage component through the lead and forwarding the state data to the nursing end through the data storage component;
the implantable sensor is configured with an anchoring device that is adjustable in size;
the nursing end receives the state data forwarded by the patient end, performs dynamics analysis according to a first preset period, and switches the acquisition mode of the implantable sensor according to the results of the dynamics analysis; different acquisition modes correspond to different acquisition mode parameter settings;
the acquisition mode parameter is one of the following parameters or any combination thereof:
the single acquisition time of the implantable sensor, the acquired state data combination and the set size of the anchoring device;
the left atrial state data includes left atrial pressure, left atrial temperature, intracardiac electrocardiogram, and sensor acquisition duration.
2. A left atrial hemodynamic monitoring system for an intensive care unit as recited in claim 1, wherein:
the data storage component comprises a state data preprocessing unit;
and the data storage component forwards the state data to the nursing end after the state data is preprocessed by the state data preprocessing unit.
3. A left atrial hemodynamic monitoring system for an intensive care unit as recited in claim 1, wherein:
the nursing terminal receives the state data forwarded by the patient terminal, performs dynamics analysis according to a first preset period, and switches the acquisition mode of the implantable sensor according to the result of the dynamics analysis, specifically including:
receiving k left atrial pressure sampling data { P) forwarded by the patient end within the first preset period 1 ,P 2 ,…P k And k left atrial body temperature sampling data { T } 1 ,T 2 ,…T k }，k>2；
Calculating a left atrium pressure-left atrium body temperature matching change value PT according to the fitting relation f;
wherein PT = f (P) s ,T s ,W,M,T)；
P s A pressure data set formed by k left atrial pressure sampling data;
T s a body temperature data set formed by k left atrial body temperature sampling data;
m is the size value of the anchoring device set in the first preset period;
w is the BMI index of the patient;
t is the length of the first preset period;
judging whether the difference value between the left atrial pressure-left atrial body temperature matching change value PT and a preset standard value ST is in a preset range or not;
if yes, increasing the sensor acquisition time length and the first preset period.
4. A left atrial hemodynamic monitoring system for an intensive care unit as recited in claim 1, wherein:
the nursing terminal receives the state data forwarded by the patient terminal, performs dynamics analysis according to a first preset period, and switches the acquisition mode of the implantable sensor according to the result of the dynamics analysis, specifically including:
receiving a current intracardiac electrocardiogram curve Scur forwarded by the patient end within the first preset period, wherein the current intracardiac electrocardiogram curve Scur comprises a plurality of sampling points;
performing sampling point matching on the current intracardiac electrocardiogram curve Scur and the last intracardiac electrocardiogram curve Spre forwarded by the patient end received last time;
and if the sampling points exceeding the first preset number cannot be matched, the nursing end informs a nursing staff to adjust the size of the anchoring device.
5. A left atrial hemodynamic monitoring system for an intensive care unit as recited in claim 4, wherein:
if the sampling points exceeding the first preset number can be matched, switching the acquisition mode of the implantable sensor, so that the implantable sensor acquires the left atrial pressure and the left atrial body temperature in a first time period and acquires the intracardiac electrocardiogram in a second time period, wherein the first time period is different from the second time period.
6. A left atrial hemodynamic monitoring system for an intensive care unit as recited in claim 3, wherein:
judging whether the difference value of the left atrial pressure-left atrial body temperature matching change value PT and a preset standard value ST is in a preset range;
if not, reducing the acquisition time length of the sensor and the first preset period,
and if the state data forwarded by the nursing terminal receiving the patient terminal does not contain the intracardiac electrocardiogram data, the nursing terminal informs nursing staff to adjust the acquisition mode of the implantable sensor, so that the implantable sensor acquires the left atrial pressure, the left atrial body temperature and the intracardiac electrocardiogram synchronously.
7. A left atrial hemodynamic monitoring system for intensive care units as recited in claim 1, wherein:
the monitoring system is powered by a wireless radio frequency transmission system.
8. A left atrial hemodynamic monitoring system for an intensive care unit as recited in claim 1, wherein:
and the data storage component stores the state data by adopting an annular stack.
9. A left atrial hemodynamic monitoring system for an intensive care unit as recited in claim 8, wherein:
the ring stack comprises a first layer of ring stack, a second layer of ring stack and a third layer of ring stack;
the first layer ring stack is used for storing left atrial pressure data;
the second layer ring stack is used for storing left atrium body temperature data;
the third layer of ring stack is used for storing intracardiac electrocardiogram data;
the third layer of ring stack is the innermost layer of ring stack.
10. A left atrial hemodynamic monitoring system for an intensive care unit as recited in claim 9, wherein:
when one of the first layer ring stack or the second layer ring stack is full,
the data storage component forwards the status data to the care end.
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