Method for judging the chest shape of a patient, chest compression bandage and cardiopulmonary resuscitation machine

Abstract

The present invention relates to the technical field of medical devices, and in particular discloses a method for judging the chest shape of a patient, a circumferential chest contraction bandage, and a cardiopulmonary resuscitation machine, including monitoring the shape information and contact information of the circumferential chest contraction bandage; determining the initial contour graphic of the circumferential chest contraction bandage according to the initial shape information and the contact information; determining the working contour graphic of the circumferential chest contraction bandage according to the real-time shape information and the contact information; and determining the changes in the chest shape of the patient according to the initial contour graphic and the working contour graphic. By real-time monitoring of the changes in the chest shape of the patient, it is beneficial to analyze and study the connection between the changes in the chest shape of the patient and the formation of positive pressure in the chest cavity, and further, it is beneficial to optimize and improve the technology for forming positive pressure in the chest cavity.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a method for judging the chest shape of a patient, a chest circumferential contraction bandage and a cardiopulmonary resuscitation machine. Background Art

[0002] Chest compression is an important part of CPR (Cardiopulmonary Resuscitation). Effective compression helps to generate forward blood flow, supply oxygen to the heart, brain and other important organs, and replenish myocardial ATP reserves, which is critical for successful defibrillation and resuscitation. Single-point chest compression has an irreversible inefficiency. Even high-quality compression can only provide 10%-30% and 30%-40% of the blood perfusion before arrest to the heart and brain, respectively. The generation of forward blood flow is mainly determined by the increase in intrathoracic pressure (thoracic pump mechanism), and direct cardiac compression (heart pump mechanism) plays only a small role in it.

[0003] The original intention of designing a cardiopulmonary resuscitation machine is to increase the blood flow to the heart and brain of patients with cardiac arrest, and at the same time to serve as a bridge to more specific treatment methods including defibrillation, intravenous medication, cardiac catheterization technology and other forms of vascular reconstruction. Some cardiopulmonary resuscitation machines in the prior art increase the forward blood flow by adding a bandage (chest contraction equipment) to wrap the chest cavity on the basis of direct compression of the sternum, thereby driving the effect of chest contraction and generating a higher positive pressure in the chest cavity, such as the technical solutions recorded in the applicant's previous patents CN115944521A and CN116785151A.

[0004] When a patient receives cardiopulmonary resuscitation, the peripheral morphology of the chest cavity will change. As the duration of cardiopulmonary resuscitation continues, the compliance of the chest cavity will change, and the specific changes in the chest cavity morphology will also change. The changes in the chest cavity morphology are related to the formation of positive pressure in the chest cavity. However, the chest circumference contraction equipment used in cardiopulmonary resuscitation machines in the prior art cannot sense the real-time state changes of the chest cavity morphology. Therefore, the applicant hopes to improve the problems existing in the existing chest circumference contraction technology. Summary of the invention

[0005] Based on this, it is necessary to provide a method for judging the chest shape of a patient, a chest contraction bandage and a cardiopulmonary resuscitation machine to address the problems existing in the existing chest contraction technology, which can monitor the changes in the chest shape of the patient in real time. By monitoring the changes in the chest shape of the patient in real time, it is helpful to analyze and study the relationship between the changes in the chest shape of the patient and the formation of positive pressure in the chest cavity, and further, it is helpful to optimize and improve the technology for forming positive pressure in the chest cavity.

[0006] A method for judging the chest morphology of a patient, comprising monitoring shape information and contact information of a circumferential chest contraction bandage; determining an initial contour graphic of the circumferential chest contraction bandage based on the initial shape information and the contact information; determining a working contour graphic of the circumferential chest contraction bandage based on the real-time shape information and the contact information; and determining changes in the chest morphology of the patient based on the initial contour graphic and the working contour graphic.

[0007] In one of the embodiments, determining the initial contour graphic of the circumferential chest contraction bandage based on the initial shape information and the contact information includes determining the covering contour graphic of the circumferential chest contraction bandage based on the initial shape information; determining the covering demarcation point position on the covering contour graphic based on the initial contact information; determining the contact area on the covering contour graphic based on the covering demarcation point position, and determining the graphic corresponding to the contact area as the initial contour graphic.

[0008] In one of the embodiments, determining the change in the patient's chest morphology based on the initial contour graphic and the working contour graphic includes selecting a determination point in the working contour graphic; determining an expansion area and a contraction area in the initial contour graphic; judging a positional relationship between the determination point and the initial contour graphic; determining that the patient's chest morphology is in an expansion state in response to a determination result that the determination point is located in the expansion area in the initial contour graphic; and determining that the patient's chest morphology is in a contraction state in response to a determination result that the determination point is located in the contraction area in the initial contour graphic.

[0009] In one of the embodiments, determining the change in the patient's chest morphology based on the initial contour graphic and the working contour graphic includes selecting a determination point in the initial contour graphic; determining an expansion area and a contraction area in the working contour graphic; judging a positional relationship between the determination point and the working contour graphic; determining that the patient's chest morphology is in an expansion state in response to a determination result that the determination point is located in the expansion area in the working contour graphic; and determining that the patient's chest morphology is in a contraction state in response to a determination result that the determination point is located in the contraction area in the working contour graphic.

[0010] A circumferential chest contraction bandage, comprising a first connection area, a second connection area and a sensing area, wherein the first connection area is located at a first end of the circumferential chest contraction bandage, the second connection area is located at a second end of the circumferential chest contraction bandage opposite to the first end, and the sensing area is located between the first connection area and the second connection area; the sensing area is provided with a contact sensing module and a shape sensing module; the contact sensing module is used to obtain contact information on the surface of the circumferential chest contraction bandage; the shape sensing module is used to obtain shape information of the sensing area.

[0011] In one embodiment, the circumferential chest contraction bandage includes a first fabric layer and a second fabric layer that are stacked; the contact sensing module is arranged on a first surface of the first fabric layer, the first surface is a surface of the first fabric layer away from the second fabric layer, and the contact sensing module is used to obtain contact information on the first surface; the shape sensing module is arranged between the first fabric layer and the second fabric layer.

[0012] In one embodiment, the shape sensing module includes a shape sensor, and the sensing area includes a shape sensing area, and the shape sensing area is extended in the length direction of the circumferential chest compression bandage; or, the sensing area includes a plurality of shape sensing areas, and the plurality of shape sensing areas are spaced apart or continuously in the length direction of the circumferential chest compression bandage; wherein one or more shape sensors are arranged in one shape sensing area.

[0013] In one embodiment, the contact sensing module includes a contact sensor, the contact sensing module includes a contact sensor, the sensing area includes a contact sensing area, and the contact sensing area is extended in the length direction of the circumferential chest compression bandage; or, the sensing area includes multiple contact sensing areas, and the multiple contact sensing areas are spaced apart or continuously in the length direction of the circumferential chest compression bandage; wherein one or more contact sensors are arranged in one contact sensor area.

[0014] In one of the embodiments, the contact sensing area includes a pressure sensing area, the contact information includes pressure information, and the contact sensing module further includes a pressure sensor.

[0015] In one embodiment, the plurality of contact sensors and the plurality of pressure sensors are arranged in an array on the circumferential chest contraction bandage in alternating patterns.

[0016] In one of the embodiments, one of the contact sensing areas corresponds to a point position information of the shape sensing area in the length direction of the circumferential chest compression bandage; or, a local position of the contact sensing area corresponds to a point position information of the shape sensing area in the length direction of the circumferential chest compression bandage.

[0017] In one embodiment, the circumferential chest contraction bandage also includes an angle sensing module, the installation position of which on the circumferential chest contraction bandage is adjustable, and the module is disposed between the first connection area and the sensing area, and / or between the second connection area and the sensing area, and the angle sensing module is used to obtain angle information of the circumferential chest contraction bandage.

[0018] In one embodiment, the first connection area and / or the second connection area of ​​the second surface of the second fabric layer is provided with Velcro, and the second surface is the surface of the second fabric layer away from the first fabric layer.

[0019] In one embodiment, the first fabric layer and the second fabric layer are made of inelastic material.

[0020] A cardiopulmonary resuscitation machine, comprising a circumferential chest contraction bandage as described in any one of the above embodiments; a control module connected to a contact sensing module and a shape sensing module of the circumferential chest contraction bandage, for monitoring shape information and contact information of the circumferential chest contraction bandage; determining an initial contour graphic of the circumferential chest contraction bandage based on the initial shape information and the contact information; determining a working contour graphic of the circumferential chest contraction bandage based on the real-time shape information and the contact information; and determining changes in the patient's chest morphology based on the initial contour graphic and the working contour graphic.

[0021] In one embodiment, the cardiopulmonary resuscitation machine further includes a display module connected to the control module for displaying changes in the shape information, the contact information and the patient's chest morphology.

[0022] The above method for judging the chest morphology of a patient determines the initial contour image of the chest circumference compression bandage and the working contour image in the working state by monitoring the shape information and contact information of the chest circumference compression bandage. By comparing the initial contour image and the working contour image, the changes in the chest circumference compression bandage are judged and the changes in the chest morphology of the patient are determined. By real-time monitoring of the changes in the chest morphology of the patient, it is helpful to analyze and study the relationship between the changes in the chest morphology of the patient and the formation of positive pressure in the chest cavity, and further, it is helpful to optimize and improve the technology for forming positive pressure in the chest cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the implementation methods of this specification or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 It is a schematic top view of a chest circumference contraction bandage in one embodiment of the present disclosure;

[0025] Figure 2 It is a structural schematic diagram of a vertical cross section of a chest circumference contraction bandage in one embodiment of the present disclosure;

[0026] Figure 3 A schematic top view of a shape sensor disposed on a chest circumference contraction bandage in one embodiment of the present disclosure;

[0027] Figure 4A is a deformation diagram of a shape sensor in one embodiment of the present disclosure;

[0028] Figure 4B for Figure 4A Schematic diagram of shape information collected by the shape sensor;

[0029] Figure 5 A schematic top view of a chest circumference contraction bandage in which a contact sensor is arranged in one embodiment of the present disclosure;

[0030] Figure 6 A schematic top view of a pressure sensor disposed on a chest circumference contraction bandage in one embodiment of the present disclosure;

[0031] Figure 7 A schematic top view of an array arrangement of contact sensors and pressure sensors on the surface of a chest circumference contraction bandage in one embodiment of the present disclosure;

[0032] Figure 8 It is a schematic bottom view of the surface of a chest circumference contraction bandage in one embodiment of the present disclosure;

[0033] Fig. 9 It is a partially enlarged schematic diagram of a chest circumference contraction bandage connected to a cardiopulmonary resuscitation machine in one embodiment of the present disclosure;

[0034] Fig.10 This is a schematic diagram of the structure in which a cardiopulmonary resuscitation machine is fixed to a patient's torso in one embodiment of the present disclosure;

[0035] Fig.11 This is a flow chart of a method for determining the chest morphology of a patient in one embodiment of the present disclosure;

[0036] Fig.12 A schematic flow chart of a method for determining an initial contour graphic of a chest circumference contraction bandage in one embodiment of the present disclosure;

[0037] Fig.13 A schematic diagram of a wrapping contour graphic in one embodiment of the present disclosure;

[0038] Fig.14 This is a flow chart of a method for determining changes in the chest morphology of a patient in one embodiment of the present disclosure;

[0039] Fig.15 A schematic diagram of a chest circumference contraction bandage expanding outward during compression in one embodiment of the present disclosure;

[0040] Fig.16 A schematic diagram of a chest circumference contraction bandage contracting inwards during compression in one embodiment of the present disclosure;

[0041] Fig.17 The present invention is a flowchart of a method for determining changes in the chest morphology of a patient in another embodiment of the present invention. DETAILED DESCRIPTION

[0042] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to understand the disclosure of the present invention more thoroughly and comprehensively.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0044] The present invention provides a bandage that can be applied to a cardiopulmonary resuscitation machine. Figure 1This is a schematic top view of a circumferential chest contraction bandage in one embodiment of the present disclosure. The circumferential chest contraction bandage 10 may include a first connection area 100, a second connection area 200 and a sensing area 300. The first connection area 100 may be located at the first end of the circumferential chest contraction bandage 10, and the second connection area 200 may be located at the second end of the circumferential chest contraction bandage 10. The first end and the second end may be two opposite ends of the circumferential chest contraction bandage 10. Connectors may be provided on the first connection area 100 and the second connection area 200, so that the circumferential chest contraction bandage 10 may be connected to a cardiopulmonary resuscitation machine through the connectors on the first connection area 100 and / or the second connection area 200. The connectors may include, but are not limited to, hooks, hinged buckles, and Velcro.

[0045] The sensing area 300 may be located between the first connection area 100 and the second connection area 200, and the sensing area 300 may be spaced a certain distance from the first connection area 100 and / or the second connection area 200; the sensing area 300 may also be arranged without a gap between the first connection area 100 and / or the second connection area 200, and the sensing area 300 has no overlapping area with the first connection area 100 and the second connection area 200 in the projection direction of the circumferential chest contraction bandage 10. When the circumferential chest contraction bandage 10 is in use, at least part of the sensing area 300 contacts the patient. A contact sensing module 310 and a shape sensing module 320 may be provided on the sensing area 300.

[0046] Considering that when the circumferential chest contraction bandage 10 is connected to the cardiopulmonary resuscitation machine through the first connection area 100 and / or the second connection area 200, the first connection area 100 and / or the second connection area 200 may be bent, therefore, in this embodiment, by making the sensing area 300 have no overlapping area with the first connection area 100 and the second connection area 200 in the projection direction of the circumferential chest contraction bandage 10, the safety of use of the contact sensing module 310 and the shape sensing module 320 arranged on the sensing area 300 can be ensured, and damage to the contact sensing module 310 and / or the shape sensing module 320 due to bending of the first connection area 100 and / or the second connection area 200 can be avoided.

[0047] The contact sensing module 310 can be used to obtain contact information on the surface of the chest circumference contraction bandage 10. Among them, the contact information may include but is not limited to touch information, temperature information, humidity information, and pressure information. The shape sensing module 320 can be used to obtain the shape information of the sensing area 300. Among them, the shape information may include but is not limited to morphological information, size information, and shape contour information. In practical applications, the chest circumference contraction bandage 10 is usually in contact with the patient, and the contact between the surface of the chest circumference contraction bandage 10 and the patient and the bending of the chest circumference contraction bandage 10 itself can effectively help the operator determine whether the chest circumference contraction bandage 10 can achieve a suitable use effect. For example, it is determined whether the chest circumference contraction bandage 10 is in full contact with the patient's body according to the contact information, and whether the patient is wrapped by the chest circumference contraction bandage 10 according to the shape information. It can be seen that the chest circumference contraction bandage 10 provided by the present disclosure uses the contact information collected by the contact sensing module 310 and the shape information collected by the shape sensing module 320 to provide reference data, which can help the operator determine the use status of the chest circumference contraction bandage 10 based on the reference data.

[0048] Compared with the bandages in the prior art, when the circumferential chest contraction bandage 10 provided by the present invention is used in a cardiopulmonary resuscitation machine, the operator can assist in the installation of the bandage 10 based on the contact information and shape information of the circumferential chest contraction bandage 10, as well as determine the usage status of the circumferential chest contraction bandage 10 after installation, etc., which can reduce the experience requirements of the cardiopulmonary resuscitation machine for the operator and broaden the application market of the cardiopulmonary resuscitation machine.

[0049] Figure 2 1 is a schematic structural diagram of a vertical cross section of a chest circumference compression bandage in one embodiment of the present disclosure. In one embodiment, the chest circumference compression bandage 10 may include a first fabric layer 11 and a second fabric layer 12 that are stacked. A contact sensing module 310 may be disposed on a first surface of the first fabric layer 11. The first surface may be a surface of the first fabric layer 11 away from the second fabric layer 12. The contact sensing module 310 may be used to obtain contact information on the first surface 11. The shape sensing module 320 may be disposed between the first fabric layer 11 and the second fabric layer 12.

[0050] When the chest circumference contraction bandage 10 is in use, the first surface may be the surface that is in direct contact with the patient. By arranging the contact sensing module 310 on the first surface, the contact sensing module 310 may obtain accurate contact information based on physical contact with the patient.

[0051] Considering that the shape sensing module 320 is used to collect information such as the outer contour of the chest circumference contraction bandage 10, it is not necessary to directly contact the patient. At the same time, setting the shape sensing module 320 on the outer surface of the chest circumference contraction bandage 10 may be bent by external force, which may affect the data collection of the shape sensing module 320. Therefore, the shape sensing module 320 is set between the first fabric layer 11 and the second fabric layer 12.

[0052] By arranging the shape sensing module 320 between the first fabric layer 11 and the second fabric layer 12, on the one hand, when the circumferential chest contraction bandage 10 is bent and deformed, the first fabric layer 11 and the second fabric layer 12 can respectively provide two stresses from different directions to the shape sensing module 320, thereby better driving the shape sensing module 320 to produce synchronous deformation; on the other hand, the first fabric layer 11 and the second fabric layer 12 cover the shape sensing module 320 inside, which can provide protection for the shape sensing module 320, and prevent the friction, bump and other situations that the circumferential chest contraction bandage 10 may encounter during use from damaging the shape sensing module 320, thereby affecting the data collection of the shape sensing module 320.

[0053] Figure 3 This is a schematic top view of a shape sensor disposed on a chest circumference contraction bandage in one embodiment of the present disclosure, wherein, in order to better demonstrate the positional relationship of the shape sensor 321 on the chest circumference contraction bandage 10, the first fabric layer 11 of the chest circumference contraction bandage 10 and the contact sensing module 310 are hidden. In one embodiment, the shape sensing module 320 may include a shape sensor 321, and the sensing area 300 may include one or more shape sensing areas 301. When the sensing area 300 includes one shape sensing area 301, the shape sensing area 301 may be extended in the length direction of the chest circumference contraction bandage 10; when the sensing area 300 includes multiple shape sensing areas 301, the multiple shape sensing areas 301 may be spaced or continuously disposed in the length direction of the chest circumference contraction bandage 10.

[0054] Figure 3The embodiment shown is that the sensing area 300 includes a shape sensing area 301, and a long strip-shaped shape sensor 321 is arranged flat on the shape sensing area 301. In some other embodiments, the shape sensing area 301 can be designed as one or more according to different practical application requirements, and the multiple shape sensing areas 301 can be arranged at intervals or partially at intervals in the length direction of the chest circumference contraction bandage 10. The distances between the shape sensing areas 301 can be the same or different. At the same time, one or more shape sensors 321 can also be arranged on a shape sensing area 301. The multiple shape sensors 321 can also be arranged at intervals or partially at intervals in the length direction of the chest circumference contraction bandage 10, and the distances between the shape sensors 321 can be the same or different. Among them, the shape sensor 321 can include but is not limited to a strip-shaped 2D shape sensor and a three-dimensional optical fiber sensor.

[0055] Figure 4A is a deformation diagram of a shape sensor in one embodiment of the present disclosure, Figure 4B This is a schematic diagram of shape information collected by a shape sensor in one embodiment of the present disclosure. Figure 4A and Figure 4B It can be seen that the shape sensor 321 can accurately measure and model the shape, shape change, angle, bending degree, contour and other data of the measured object. The shape sensor 321 is arranged on the chest circumference contraction bandage 10, and can effectively track, simulate and collect the shape information of the chest circumference contraction bandage 10.

[0056] When only one shape sensor 321 is provided in the length direction of the chest circumference contraction bandage 10, the size of the shape sensor 321 in the length direction of the chest circumference contraction bandage 10 can be the same as the size of the sensing area 300 of the chest circumference contraction bandage 10 in the length direction of the chest circumference contraction bandage 10. When the chest circumference contraction bandage 10 is in use, at least part of the sensing area 300 is in contact with the patient's trunk, and the shape sensor 321 collects shape information of the sensing area 300, so that at least part of the collected shape information is the shape information corresponding to the contact part of the chest circumference contraction bandage 10 with the patient's trunk. Based on the shape information collected by the shape sensor 321, the operator can determine whether the wrapping form of the chest circumference contraction bandage 10 meets the operation requirements.

[0057] Figure 5This is a schematic top view of a contact sensor disposed on a bandage in one embodiment of the present disclosure. In one embodiment, the contact sensing module 310 may include a contact sensor 311, and the sensing area 300 may include one or more contact sensing areas 302. When the sensing area 300 includes one contact sensing area 302, the contact sensing area 302 may be extended in the length direction of the chest circumference contraction bandage 10; when the sensing area 300 includes multiple contact sensing areas 302, the multiple contact sensing areas 302 may be spaced or continuously disposed in the length direction of the chest circumference contraction bandage 10.

[0058] Figure 5 What is shown is an implementation method in which the sensing area 300 includes a plurality of contact sensing areas 302, and a contact sensor 311 is arranged on one contact sensing area 302. In some other embodiments, the contact sensing area 302 may be designed as one or more according to different practical application requirements, and the plurality of contact sensing areas 302 may be arranged at intervals or partially at intervals in the length direction of the circumferential chest contraction bandage 10. The distances between the shape sensing areas 301 may be the same or different. At the same time, one or more contact sensors 311 may also be arranged on one contact sensing area 302. The plurality of contact sensors 311 may be arranged at intervals or partially at intervals in the length direction of the circumferential chest contraction bandage 10. Among them, the distances between the contact sensors 311 may be the same or different.

[0059] By arranging a plurality of contact sensors 311 at different positions in the length direction of the bandage 10, the contact information at different positions in the length direction of the bandage 10 can be collected respectively, so as to realize real-time monitoring of the contact conditions at different positions in the length direction of the bandage 10. Based on the contact information collected by the contact sensors 311, the operator can determine whether each position on the sensing area 300 of the bandage 10 is in contact with the patient, and thus determine whether the degree of coverage of the bandage 10 for the patient meets the operation requirements.

[0060] The contact sensor 311 can identify the above behaviors based on the changes in capacitance, resistance, sound waves and other factors caused by contact or proximity, thereby causing changes in induced electric field and current, and can achieve accurate contact detection. According to the design requirements of different application scenarios, the contact sensor 311 can use different forms of sensors to achieve contact detection, including but not limited to switch-type contact sensors, proximity-type contact sensors, and pressure-type contact sensors.

[0061] Figure 6 This is a schematic top view of a pressure sensor disposed on a bandage in one embodiment of the present disclosure. Figure 6The embodiment shown is that the sensing area 300 includes a plurality of pressure sensing areas 303, and a plurality of pressure sensors 312 are arranged on one pressure sensing area 303. In one embodiment, the contact sensing area 302 may include a pressure sensing area 303, the contact information may include pressure information, and the contact sensing module 310 may further include a pressure sensor 312. In some embodiments, at least part of the contact sensing area 302 may be set as the pressure sensing area 303, and / or at least part of the contact sensor 311 may be set as the pressure sensor 312. When a plurality of pressure sensors 312 are arranged on the surface of the circumferential chest contraction bandage 10, the plurality of pressure sensors 312 may also be arranged at intervals or partially at intervals in the length direction of the circumferential chest contraction bandage 10. The distances between the pressure sensors 312 may be the same or different.

[0062] By arranging a plurality of pressure sensors 312 at different positions in the length direction of the chest circumference contraction bandage 10, the pressure information at different positions in the length direction of the chest circumference contraction bandage 10 can be collected respectively, so as to realize real-time monitoring of the pressure conditions at different positions in the length direction of the chest circumference contraction bandage 10. Based on the contact information collected by the pressure sensor 312, the operator can determine the magnitude of the force acting on the patient's trunk at each position on the sensing area 300 of the chest circumference contraction bandage 10, thereby determining whether the wrapping pressure of the chest circumference contraction bandage 10 on the patient meets the operation requirements.

[0063] The pressure sensor 312 can sense the pressure acting on it and convert the pressure signal into an electrical signal for output. According to the design requirements of different application scenarios, the pressure sensor 312 can use sensors of different test pressure types to achieve pressure detection, including but not limited to gauge pressure sensors, differential pressure sensors and absolute pressure sensors.

[0064] Figure 7 This is a schematic top view of the arrangement of contact sensors and pressure sensors in an array on the surface of a circumferential chest compression bandage in one embodiment of the present disclosure. Figure 7 The embodiment shown is that the sensing area 300 includes a contact sensing area 302, and a plurality of contact sensors 311 and a plurality of pressure sensors 312 are arranged on the contact sensing area 302. In one embodiment, the plurality of contact sensors 311 and the plurality of pressure sensors 312 are arranged in an array in pairs in a staggered manner in the length direction of the chest circumference contraction bandage 10. Figure 7, multiple contact sensors 311 and multiple pressure sensors 312 are arranged alternately in pairs on the first surface of the circumferential chest contraction bandage 10 to form a sensor array. By setting up a sensor array in which the contact sensors 311 and the pressure sensors 312 are arranged alternately, the contact information and pressure information at various positions on the sensing area 300 of the circumferential chest contraction bandage 10 can be monitored in real time at the same time, thereby improving the diversity and accuracy of the circumferential chest contraction bandage 10 in collecting its own data. Preferably, in the sensor array formed by the multiple contact sensors 311 and the multiple pressure sensors 312, the distances between the sensors are the same.

[0065] In one embodiment, a contact sensing area 302 corresponds to a point position information of the shape sensing area 301 in the length direction of the chest circumference contraction bandage 10. Alternatively, a local position of the contact sensing area 302 corresponds to a point position information of the shape sensing area 301 in the length direction of the chest circumference contraction bandage 10. In some embodiments, a pressure sensor 312 and / or a contact sensor 311 may also correspond to a position information. Figure 7 In the sensor array shown, each sensor corresponds to a position information, and each sensor corresponds to a point information on the shape sensing area 301. In one embodiment, the position information of the pressure sensor 312 and / or the contact sensor 311 is implemented in the form of coordinates. By configuring the position information for each pressure sensor 312 and / or the contact sensor 311, when the data collected by any sensor is abnormal, the operator can locate the position of the sensor on the chest circumference contraction bandage 10 based on the sensor position information corresponding to the abnormal data, so that the operator can view the specific usage of the corresponding position of the chest circumference contraction bandage 10, determine what problems have occurred and make appropriate adjustments accordingly.

[0066] In some other embodiments, the contact sensing module 310 may also include a variety of sensors for collecting different contact information, including but not limited to temperature sensors, light sensors, and infrared sensors. The above sensors may also be arranged in a staggered manner on the first surface of the chest circumference contraction bandage 10 to form a sensor array in the length direction of the first surface, so as to monitor the use status of the chest circumference contraction bandage 10 in real time from various data dimensions.

[0067] In one embodiment, the circumferential chest contraction bandage 10 may further include an angle sensing module. The installation position of the angle sensing module on the circumferential chest contraction bandage 10 is adjustable, and the angle sensing module is detachably disposed between the first connection area 100 and the sensing area 300, and / or disposed between the second connection area 200 and the sensing area 300. The angle sensing module may be used to obtain angle information of the circumferential chest contraction bandage 10. Based on the angle information collected by the angle sensing module, the operator may determine the wrapping angle of the circumferential chest contraction bandage 10 for the patient, thereby determining whether the wrapping angle of the circumferential chest contraction bandage 10 for the patient meets the operation requirements.

[0068] Figure 8 1 is a schematic bottom view of the surface of the chest circumference compression bandage in one embodiment of the present disclosure. In one embodiment, a hook and loop fastener 13 is provided on the first connection area and / or the second connection area of ​​the second surface of the second fabric layer 12. The second surface may be the surface of the second fabric layer 12 away from the first fabric layer 11. That is, the hook and loop fastener 13 is provided on the surface of the chest circumference compression bandage 10 away from the patient when in use. Fig. 9 This is a partially enlarged schematic diagram of a circumferential chest contraction bandage connected to a cardiopulmonary resuscitation machine in one of the embodiments of the present disclosure. A corresponding connector may be provided on the cardiopulmonary resuscitation machine, and the end of the circumferential chest contraction bandage 10 may pass through the connector and be fixed using a Velcro 13. By adjusting the adhesive state of the Velcro 13, the length of the circumferential chest contraction bandage 10 may be partially adjusted to accommodate patients of different body shapes. The Velcro 13 may be a Velcro or other connecting auxiliary material that can be used for connection and fixation, as long as the length of the circumferential chest contraction bandage 10 can be adjusted to a certain extent and the circumferential chest contraction bandage 10 can be fixed to the cardiopulmonary resuscitation machine.

[0069] In one embodiment, the first fabric layer 11 and the second fabric layer 12 can be made of an inelastic material. The circumferential chest bandage 10 used in a cardiopulmonary resuscitation machine is usually used to restrain the patient's chest cavity, so that when performing cardiopulmonary resuscitation, the circumferential chest bandage 10 can prevent the patient's chest cavity from expanding outward. The use of inelastic materials to prepare the first fabric layer 11 and the second fabric layer 12 can prevent the circumferential chest bandage 10 from affecting the restraining force of the circumferential chest bandage 10 on the patient's chest cavity due to elastic deformation of the first fabric layer 11 and the second fabric layer 12, thereby helping the pressing force applied by the cardiopulmonary resuscitation machine to be effectively transmitted to the patient's chest cavity.

[0070] The present disclosure may also provide a cardiopulmonary resuscitation machine 1, Fig.10It is a schematic diagram of the structure of fixing a cardiopulmonary resuscitation machine to a patient's torso in one of the embodiments of the present disclosure. The cardiopulmonary resuscitation machine 1 may include a circumferential chest contraction bandage 10 applied to the cardiopulmonary resuscitation machine as described in any of the above embodiments. The cardiopulmonary resuscitation machine 1 may also include a pressing device 20. The circumferential chest contraction bandage 10 may be fixedly connected to the pressing device 20 through the first connection area 100 and / or the second connection area 200. When in use, the circumferential chest contraction bandage 10 can surround the periphery of the patient's chest cavity, and confine the patient's chest cavity between the pressing device 20 and the circumferential chest contraction bandage 10 in a manner that both ends are fixed on the pressing device 20. When the pressing device 20 is working, the circumferential chest contraction bandage 10 can prevent the patient's chest cavity from expanding outward, so as to ensure the pressing effect of the pressing device 20 on the patient's chest cavity.

[0071] The cardiopulmonary resuscitation machine 1 may further include a control module, which may be connected to the contact sensing module 310 and the shape sensing module 320 of the circumferential chest contraction bandage 10. After receiving the contact information collected by the contact sensing module 310 and the shape information collected by the shape sensing module 320, the control module may determine the covering information of the circumferential chest contraction bandage 10 according to the shape information and the contact information, and provide a reference for the operator. For example, the control module may determine whether the circumferential chest contraction bandage 10 is in full contact with the patient's body according to the contact information, and the control module may also determine whether the patient is wrapped by the circumferential chest contraction bandage 10 according to the shape information, and the covering information is formed based on the above judgment results.

[0072] The cardiopulmonary resuscitation machine provided by the present disclosure can use the chest circumference contraction bandage 10 described in any of the above embodiments to achieve the restraint of the patient's chest or fixation of other torsos of the patient. The chest circumference contraction bandage 10 can provide reference data for the cardiopulmonary resuscitation machine using the contact information collected by the contact sensing module 310 and the shape information collected by the shape sensing module 320. The control module of the cardiopulmonary resuscitation machine can determine the covering information of the chest circumference contraction bandage 10 based on the reference data, so that the operator can determine the use status of the chest circumference contraction bandage 10 based on the covering information.

[0073] The control module can also be connected to the pressing device 20 to control the operation of the pressing device 20. The control module can determine whether the chest circumference contraction bandage 10 has been installed and whether the installation state of the chest circumference contraction bandage 10 meets the use requirements based on the covering information. After judging that the bandage 10 has been installed and the installation state of the bandage 10 meets the use requirements, the control module can automatically generate an instruction that the bandage installation is completed, or the operator can give the control module an instruction that the bandage installation is completed. The control module can determine the initial contour graphic of the bandage 10 based on the shape information and contact information when the chest circumference contraction bandage is in the initialization state. In this embodiment, the initialization state of the chest circumference contraction bandage 10 can refer to the state when the chest circumference contraction bandage 10 has just been installed and the pressing device 20 has not yet started pressing. The control module analyzes and records the initial contour graphic of the chest circumference contraction bandage 10 at this time.

[0074] The control module can also control the pressing device 20 to enter the working state after the installation state of the chest contraction bandage 10 meets the use requirements. After the pressing device 20 starts to press the patient's chest, the control module can automatically generate an instruction that the cardiopulmonary resuscitation machine is in the working state, or the operator can give the control module an instruction that the cardiopulmonary resuscitation machine is in the working state. The control module can also determine the working contour graph of the chest contraction bandage 10 in the real-time working state based on the real-time shape information and contact information of the chest contraction bandage 10. That is, at any moment after the pressing device 20 starts pressing, the control module can analyze and record the working contour graph of the chest contraction bandage 10 at any working moment in real time. The control module can determine the deformation of the control module bandage 10 by comparing the difference between the initial contour graph and the working contour graph, and then determine the change in the patient's chest shape during the pressing process.

[0075] In one embodiment, the cardiopulmonary resuscitation machine 1 may further include a display module. The display module may be connected to the control module, and the display module may be used to display the shape information, contact information, and changes in the patient's chest shape. By using the display module to display information such as the shape information, contact information, and changes in the patient's chest shape, the operator may more intuitively understand various aspects of the control module bandage 10, and may more intuitively reflect the compression effect of the cardiopulmonary resuscitation machine on the patient's chest, thereby improving the convenience of using the cardiopulmonary resuscitation machine and optimizing the operator's experience.

[0076] The present disclosure may also provide a method for determining the chest morphology of a patient, Fig.11 This is a flow chart of a method for determining the chest morphology of a patient in one embodiment of the present disclosure. In one embodiment, the method for determining the chest morphology of a patient may include the following steps S100 to S400.

[0077] Step S100: monitoring the shape information and contact information of the circumferential chest contraction bandage.

[0078] The control module of the cardiopulmonary resuscitation machine 1 is connected to the contact sensing module 310 and the shape sensing module 320 of the chest circumference contraction bandage 10. The control module can monitor the contact information collected by the contact sensing module 310 and the shape information collected by the shape sensing module 320 in real time, so as to further analyze and record the contact information and shape information.

[0079] Step S200: determining the initial contour of the bandage according to the initial shape information and contact information.

[0080] The control module can determine the initial contour graphic of the bandage 10 based on the shape information and contact information of the chest circumference contraction bandage when it is in the initialization state. In this embodiment, the initial state can refer to the state when the chest circumference contraction bandage 10 has just been installed and the pressing device 20 has not yet started pressing. After judging that the chest circumference contraction bandage 10 has been installed and the installation of the chest circumference contraction bandage 10 meets the use requirements, the control module can automatically generate an instruction that the bandage installation is completed, or the operator can give the control module an instruction that the bandage installation is completed. The control module can determine the initial contour graphic of the chest circumference contraction bandage 10 based on the shape information and contact information of the current bandage. That is, when the chest circumference contraction bandage 10 has just been installed and the pressing device 20 has not yet started pressing, the shape information and contact information of the chest circumference contraction bandage 10 are analyzed. The initial contour graphic of the chest circumference contraction bandage 10 is determined based on the shape information and contact information and recorded.

[0081] Step S300: Determine the working contour of the bandage according to the real-time shape information and contact information.

[0082] The control module can determine the initial contour graphic of the bandage 10 based on the shape information and contact information of the circumferential chest contraction bandage when it is in a real-time working state. After the pressing device 20 starts to press the patient's chest, the control module can automatically generate an instruction that the cardiopulmonary resuscitation machine is in a working state, or the operator can give the control module an instruction that the cardiopulmonary resuscitation machine is in a working state. The control module can determine the working contour graphic of the circumferential chest contraction bandage 10 based on the real-time shape information and contact information of the circumferential chest contraction bandage 10. That is, at any moment after the pressing device 20 starts pressing, the real-time shape information and contact information of the circumferential chest contraction bandage 10 at that moment are analyzed. Based on the real-time shape information and contact information, the working contour graphic of the circumferential chest contraction bandage 10 at that moment is determined and recorded.

[0083] Step S400: Determine changes in the patient's chest shape based on the initial contour graph and the working contour graph.

[0084] The control module can determine the deformation of the circumferential chest contraction bandage 10 by comparing the difference between the initial contour graph and the working contour graph, and further determine the change in the patient's chest morphology during the compression process. When the initial contour graph is different from the working contour graph, it can be determined that the patient's chest morphology has changed; when the initial contour graph is the same as the working contour graph, it can be determined that the patient's chest morphology has not changed. Further, when the working contour graph is compared with the initial contour graph, the morphological change of outward expansion can be determined, and the patient's chest has also correspondingly expanded outward; when the working contour graph is compared with the initial contour graph, the morphological change of inward contraction can be determined, and the patient's chest has also correspondingly contracted.

[0085] When the method for judging the chest morphology of a patient based on a bandage provided by the present disclosure is applied to the cardiopulmonary resuscitation machine provided by the present disclosure, the cardiopulmonary resuscitation machine uses the contact sensing module and the shape sensing module provided on the circumferential chest contraction bandage 10 to collect relevant data of the circumferential chest contraction bandage 10 during installation and use. Not only can the status of the circumferential chest contraction bandage 10 during installation and use be judged based on the collected information, but also the morphological changes of the patient's chest can be analyzed based on the status of the circumferential chest contraction bandage 10, so that the operator can understand the compression effect of the cardiopulmonary resuscitation machine on the patient's chest. Using the method for judging the chest morphology of a patient provided by the present disclosure, the changes in the chest morphology of the patient are monitored in real time, which is conducive to analyzing and studying the relationship between the changes in the chest morphology of the patient and the formation of positive pressure in the chest cavity. Further, it is also conducive to optimizing and improving the technology for forming positive pressure in the chest cavity.

[0086] Fig.12 This is a flow chart of a method for determining an initial contour graphic of a circumferential chest compression bandage in one embodiment of the present disclosure. In one embodiment, determining the initial contour graphic of the circumferential chest compression bandage based on shape information and contact information may include the following steps S210 to S230.

[0087] Step S210: determining the covering contour of the circumferential chest contraction bandage according to the initial shape information.

[0088] The shape perception module on the circumferential chest contraction bandage 10 can obtain shape information of the circumferential chest contraction bandage 10 . Fig.13 FIG. 1 is a schematic diagram of a wrapping contour graphic in one embodiment of the present disclosure. The wrapping contour graphic of the circumferential chest contraction bandage 10 can be formed based on the shape information of the circumferential chest contraction bandage 10. Fig.13 The figure formed by the middle dotted lines is a schematic diagram of the cross-sectional contour of the patient's chest cavity 30 , and the figure formed by the solid lines is a covering contour figure formed according to the shape information of the circumferential chest contraction bandage 10 . E1 and E2 are two covering demarcation points on the circumferential chest contraction bandage 10 , respectively.

[0089] Step S220: determining the location of the covering boundary point on the covering contour graphic according to the initial contact information.

[0090] Since one contact sensing area 302 corresponds to one point position information of the shape sensing area 301 in the length direction of the chest circumference contraction bandage 10; or, one local position of the contact sensing area 302 corresponds to one point position information of the shape sensing area 301 in the length direction of the chest circumference contraction bandage 10, after forming a wrapping contour graphic according to the shape information, each point position on the wrapping contour graphic can correspond to one contact information, so that the wrapping demarcation point position on the wrapping contour graphic can be determined according to the contact information and the corresponding position of the contact information on the wrapping contour graphic. Fig.10 When the circumferential chest bandage 10 surrounds the patient's chest to restrict the patient's chest between the circumferential chest bandage 10 and the pressing device 20, part of the circumferential chest bandage 10 is in contact with the patient's torso, and part of the circumferential chest bandage 10 is not in contact with the patient's torso. In this embodiment, the covering demarcation point may refer to the demarcation point between the part in contact with the patient and the part not in contact with the patient on the circumferential chest bandage 10, and the covering demarcation point position may refer to the corresponding position of the covering demarcation point on the circumferential chest bandage 10. For example, Fig.13 E1 and E2 in the figure are two covering demarcation points on the chest circumference contraction bandage 10, and the positions corresponding to E1 and E2 are the covering demarcation point positions.

[0091] According to the corresponding relationship between the pressure information and / or contact information collected by the pressure sensor 312 and / or the contact sensor 311 and the points on the covering contour graph, the contact situation corresponding to any position on the circumferential chest contraction bandage 10 can be determined. That is, according to the contact information collected at various positions on the circumferential chest contraction bandage 10, it can be determined whether any position on the circumferential chest contraction bandage 10 is in contact with the patient's body, thereby determining the position of the covering demarcation point. For example, the pressure information collected from the part of the circumferential chest contraction bandage 10 that contacts the patient is not 0, while the contact information collected from the part of the circumferential chest contraction bandage 10 that does not contact the patient is 0. Based on this, the intersection point where the contact information is 0 and non-0 can be defined as the covering demarcation point, thereby determining the covering demarcation point position corresponding to the covering demarcation point.

[0092] Step S230: determining the contact area on the covering contour graphic according to the position of the covering demarcation point, and determining the graphic corresponding to the contact area as the initial contour graphic.

[0093] After determining the location of the covering demarcation point on the covering contour graphic according to the contact information and the location information corresponding to the contact information, the contact area and the non-contact area on the covering contour graphic can be determined according to the location of the covering demarcation point. The contact area may refer to the graphic area corresponding to the part of the chest circumference contraction bandage 10 that contacts the patient on the covering contour graphic, and the non-contact area may refer to the graphic area corresponding to the part of the chest circumference contraction bandage 10 that does not contact the patient on the covering contour graphic. The graphic corresponding to the contact area on the covering contour graphic can be determined as the initial contour graphic.

[0094] In actual application, the two ends of the chest compression bandage 10 are used to be fixedly connected to the compression device 20 of the chest compression device, so the area between the end and the covering demarcation point position usually does not contact the patient, while the area between the two covering demarcation points is in contact with the patient. Therefore, the area between the two covering demarcation points can be determined as the contact area. Fig.13 In the figure, the area corresponding to the figure between point E1 and point E2 is the contact area, and the figure between point E1 and point E2 can be determined as the initial contour figure.

[0095] At the same time, when the cardiopulmonary resuscitation machine is working, the part of the chest compression bandage 10 that contacts the patient will change synchronously with the change in the shape of the patient's chest. Therefore, the change in the shape of the patient's chest can be determined by the change in the shape of the contact area on the chest compression bandage 10 before and after the operation. In this embodiment, before the cardiopulmonary resuscitation machine starts pressing, the contour of the part of the chest compression bandage 10 that contacts the patient in the initial state is determined by the contact information and shape information, and the contour information of the part of the chest compression bandage 10 that contacts the patient in the initial state is recorded as the initial contour graph.

[0096] In one embodiment, the specific operation steps of the control module determining the working contour graphic of the bandage according to the real-time shape information and contact information are similar to the specific operation steps of determining the initial contour graphic of the bandage according to the shape information and contact information, and are not described in detail here. At any moment after the pressing device 20 starts pressing, the contour of the part of the chest circumference contraction bandage 10 that contacts the patient at that moment is determined by the instantaneous contact information and shape information, and the contour information of the part of the chest circumference contraction bandage 10 that contacts the patient at that moment is recorded as the working contour graphic.

[0097] Fig.14 This is a flow chart of a method for determining changes in the chest morphology of a patient in one of the embodiments of the present disclosure, wherein the contour of the portion of the bandage in contact with the patient is determined by contact information and shape information. In one of the embodiments, based on the initial contour graph and the working contour graph, determining changes in the chest morphology of the patient may include the following steps S410 to S450.

[0098] Step S410: Select a determination point in the working profile graph.

[0099] When selecting a determination point in the working contour graph, the number of the selected determination points can be one or more. When multiple determination points are selected, different determination points can be selected at different positions on the working contour graph. Considering that when the cardiopulmonary resuscitation machine presses the patient's chest, the deformations produced at different parts of the patient's chest are also different (for example, the deformation produced on the side of the patient's torso is larger, and the deformation produced on the patient's back is smaller), therefore, preferably, when selecting a determination point, select a point located in the area in contact with the side of the patient's torso in the working contour graph.

[0100] Step S420: determining an expansion area and a contraction area in the initial contour graphic.

[0101] In this embodiment, the initial contour figure can be divided into an expansion area and a contraction area. For example, the initial contour figure can be supplemented into a closed figure, the area inside the initial contour figure is defined as a contraction area, and the area outside the initial contour figure is defined as an expansion area; or, with the contour line of the initial contour figure as the boundary, the area outside the contour line and away from the image center of the initial contour figure is defined as an expansion area, and the area outside the contour line and close to the image center of the initial contour figure is defined as a contraction area.

[0102] Step S430: determining the positional relationship between the determination point and the initial contour graphic.

[0103] By comparing the position information corresponding to the determination point with the initial contour graph, it is possible to determine in which region the determination point is located in the initial contour graph, thereby determining the deformation of the circumferential chest contraction bandage 10 and further determining the change in the patient's chest morphology.

[0104] Step S440: In response to the determination result that the position information corresponding to the determination point is located in the outward expansion area in the initial contour graph, it is determined that the chest shape of the patient is in an outward expansion state.

[0105] Fig.15 This is a graphic diagram of a bandage expanding outward during a pressing process in one embodiment of the present disclosure. Fig.15Among them, A is the determination point on the working contour graph, B is the determination point on the initial contour graph, E1 and E2 are the covering demarcation point positions on the covering contour graph of the circumferential chest contraction bandage 10 in the initial state, and E1' and E2' are the covering demarcation point positions on the covering contour graph of the circumferential chest contraction bandage 10 in the expanded state. The graph corresponding to the area between the covering demarcation point positions E1 and E2 is the initial contour graph, and the graph corresponding to the area between the covering demarcation point positions E1' and E2' is the working contour graph. Among them, the area inside the initial contour graph is defined as the contraction area, and the area outside the initial contour graph is defined as the expansion area.

[0106] Under the action of the cardiopulmonary resuscitation machine, the cross-sectional contour of the patient's chest cavity is deformed from 30 to 30', and the corresponding covering contour figure of the circumferential chest contraction bandage 10 is deformed from the initial state of 10 to the expanded state of 10'. It can be seen that under the action of the cardiopulmonary resuscitation machine, when the patient's chest cavity is deformed to expand outward, the contour of the circumferential chest contraction bandage 10 will also expand outward, so that the determination point A on the working contour figure of the circumferential chest contraction bandage 10 will be located in the expanded area of ​​the initial contour figure. Therefore, when the position information corresponding to the determination point A on the working contour figure is located in the expanded area in the initial contour figure, it can be determined that the patient's chest cavity shape is in an expanded state.

[0107] Step S450: In response to the judgment result that the position information corresponding to the judgment point is located in the contraction area in the initial contour graph, it is determined that the patient's chest shape is in a contraction state.

[0108] Fig.16 This is a graphic diagram of a bandage shrinking inwards during a pressing process in one embodiment of the present disclosure. Fig.16 A is the determination point on the working contour graph, B is the determination point on the initial contour graph, E1 and E2 are the covering demarcation point positions on the covering contour graph of the circumferential chest contraction bandage 10 in the initial state, and E1' and E2' are the covering demarcation point positions on the covering contour graph of the circumferential chest contraction bandage 10 in the contracted state. The graph corresponding to the area between the covering demarcation point positions E1 and E2 is the initial contour graph, and the graph corresponding to the area between the covering demarcation point positions E1' and E2' is the working contour graph. Among them, the area inside the initial contour graph is defined as the contraction area, and the area outside the initial contour graph is defined as the expansion area.

[0109] Under the action of the cardiopulmonary resuscitation machine, the cross-sectional contour of the patient's chest cavity is deformed from 30 to 30', and the corresponding covering contour figure of the circumferential chest contraction bandage 10 is deformed from 10 in the initial state to 10' in the contracted state. It can be seen that under the action of the cardiopulmonary resuscitation machine, when the patient's chest cavity contracts, the contour of the circumferential chest contraction bandage 10 will also contract accordingly, so that the determination point A of the bandage 10 on the working contour figure will be located in the contraction area in the initial contour figure. Therefore, when the position information corresponding to the determination point A on the working contour figure is located in the contraction area in the initial contour figure, it can be determined that the patient's chest cavity shape is in a contracted state.

[0110] Fig.17 This is a flow chart of a method for determining changes in the chest morphology of a patient in one of the embodiments of the present disclosure. In one of the embodiments, determining changes in the chest morphology of a patient based on an initial contour graph and a working contour graph may also include the following steps S460 to S500.

[0111] Step S460: Select a determination point in the initial contour graph.

[0112] When selecting a determination point in the working contour graph, the number of the selected determination points can also be one or more. Similarly, when selecting multiple determination points, different determination points can be selected at different positions on the working contour graph. Preferably, when selecting a determination point, a point located in the part of the working contour graph that contacts the side of the patient's torso is selected.

[0113] Step S470: Determine the expansion area and the contraction area in the working contour graph.

[0114] In this embodiment, the working contour graph is divided into an expansion area and a contraction area. For example, the working contour graph can be supplemented into a closed graph, the area inside the working contour graph is defined as the expansion area, and the area outside the working contour graph is defined as the contraction area; or, with the contour line of the working contour graph as the boundary, the area outside the contour line and away from the image center of the working contour graph is defined as the contraction area, and the area outside the contour line and close to the image center of the working contour graph is defined as the expansion area.

[0115] Step S480: Determine the positional relationship between the determination point and the initial contour graphic.

[0116] Similarly, by comparing the position information corresponding to the determination point and the working contour graph, it is possible to determine in which area the determination point is located in the working contour graph, thereby determining the deformation of the circumferential chest contraction bandage 10 and further determining the changes in the patient's chest morphology.

[0117] Step S490: In response to the judgment result that the position information corresponding to the judgment point is located in the outward expansion area in the working contour graph, it is determined that the patient's chest shape is in an outward expansion state.

[0118] See also Fig.15 , under the action of the cardiopulmonary resuscitation machine, the shape of the cross-sectional contour of the patient's chest cavity is deformed from 30 to 30', and the corresponding covering contour figure of the circumferential chest contraction bandage 10 is deformed from the initial state of 10 to the expanded state of 10'. It can be seen that under the action of the cardiopulmonary resuscitation machine, when the patient's chest cavity is deformed to expand outward, the contour of the circumferential chest contraction bandage 10 will also expand outward, so that the determination point B on the initial contour figure of the circumferential chest contraction bandage 10 will be located in the expanded area of ​​the working contour figure. Therefore, when the position information corresponding to the determination point B on the initial contour figure is located in the expanded area in the working contour figure, it can be determined that the patient's chest cavity shape is in an expanded state.

[0119] Step S500: In response to the judgment result that the position information corresponding to the judgment point is located in the contraction area in the working contour graph, it is determined that the patient's chest shape is in a contraction state.

[0120] See also Fig.16 , under the action of the cardiopulmonary resuscitation machine, the shape of the cross-sectional contour of the patient's chest cavity is deformed from 30 to 30', and the corresponding covering contour figure of the circumferential chest contraction bandage 10 is deformed from 10 in the initial state to 10' in the contracted state. It can be seen that under the action of the cardiopulmonary resuscitation machine, when the patient's chest cavity contracts, the contour of the circumferential chest contraction bandage 10 will also contract accordingly, so that the determination point B of the circumferential chest contraction bandage 10 on the initial contour figure will be located in the contraction area in the working contour figure. Therefore, when the position information corresponding to the determination point B on the initial contour figure is located in the contraction area in the working contour figure, it can be determined that the patient's chest cavity shape is in a contracted state.

[0121] In one embodiment, when the determination point A on the working contour graph is located on the contour line of the initial contour graph, or the determination point B on the initial contour graph is located on the contour line of the working contour graph, it can be determined that the bandage 10 has not been deformed, and thus it can be determined that the patient's chest cavity has not been deformed.

[0122] In one embodiment, when the determination point A on the working contour graph is located on the contour line of the initial contour graph, or the determination point B on the initial contour graph is located on the contour line of the working contour graph, other methods can also be used to verify the change in the patient's chest morphology. For example, determine whether the contour line of the initial contour graph coincides with the contour line of the working contour graph; compare the widest part of the initial contour graph with the widest part of the working contour graph, and when the widest part of the initial contour graph is smaller than the widest part of the working contour graph, determine that the patient's chest morphology is in an outward expansion state, when the widest part of the initial contour graph is equal to the widest part of the working contour graph, determine that the patient's chest morphology has not changed, and when the widest part of the initial contour graph is larger than the widest part of the working contour graph, determine that the patient's chest morphology is in a contracted state.

[0123] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", "ideal embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0124] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0125] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A method for determining the chest morphology of a patient, characterized in that: include: Monitor the shape and contact information of the chest compression bandage; Determining an initial contour graphic of the chest circumference contraction bandage according to the initial shape information and the contact information; Determining a working contour graphic of the chest circumference contraction bandage according to the real-time shape information and the contact information; Determining changes in the chest morphology of the patient according to the initial contour graph and the working contour graph; Determining the changes in the patient's chest morphology includes: It is determined that the chest shape of the patient is in a contracted state, or it is determined that the chest shape of the patient is in an expanded state.

2. The method for determining the chest morphology of a patient according to claim 1 is applied to a cardiopulmonary resuscitation machine, wherein the cardiopulmonary resuscitation machine comprises a chest circumference contraction bandage and a pressing device, wherein the chest circumference contraction bandage is fixedly connected to the pressing device through two ends, and is characterized in that: The step of determining the initial contour of the chest circumference contraction bandage according to the initial shape information and the contact information comprises: Determining a covering contour graphic of the chest circumference contraction bandage according to the initial shape information; Determine the location of the covering demarcation point on the covering contour graph according to the initial contact information; the covering demarcation point location is the location on the chest circumference contraction bandage corresponding to the demarcation point between the patient contact part and the non-contact part; The contact area on the enveloping contour figure is determined according to the position of the enveloping demarcation point, and the figure corresponding to the contact area is determined as the initial contour figure.

3. The method for determining the chest morphology of a patient according to claim 1 or 2, characterized in that: Determining the change of the patient's chest shape according to the initial contour graph and the working contour graph includes: Selecting a determination point in the working profile graph; Determining an expansion area and a contraction area in the initial contour graph; Determining the positional relationship between the determination point and the initial contour figure; In response to a determination result that the determination point is located in the outward expansion area in the initial contour graph, determining that the chest morphology of the patient is in an outward expansion state; In response to a determination result that the determination point is located in the contraction area in the initial contour graph, it is determined that the chest morphology of the patient is in a contraction state.

4. The method for determining the chest morphology of a patient according to claim 1, characterized in that: Determining the change of the patient's chest shape according to the initial contour graph and the working contour graph includes: Selecting a determination point in the initial contour graph; Determining an expansion area and a contraction area in the working profile graph; Determining the positional relationship between the determination point and the working profile graph; In response to a determination result that the determination point is located in the outward expansion area in the working contour graph, determining that the chest morphology of the patient is in an outward expansion state; In response to a determination result that the determination point is located in the contraction area in the working contour graph, it is determined that the patient's chest morphology is in a contraction state.

5. A cardiopulmonary resuscitation machine, characterized in that: include: A chest circumference contraction bandage, comprising a contact sensing module and a shape sensing module, wherein the contact sensing module is used to obtain contact information on the surface of the chest circumference contraction bandage; The shape perception module is used to obtain shape information of at least part of the chest circumference contraction bandage; A control module, connected to the contact sensing module and the shape sensing module of the circumferential chest contraction bandage, and used for monitoring the shape information and contact information of the circumferential chest contraction bandage; Determining an initial contour graphic of the chest circumference contraction bandage according to the initial shape information and the contact information; Determining a working contour graphic of the chest circumference contraction bandage according to the real-time shape information and the contact information; Determining changes in the chest morphology of the patient according to the initial contour graph and the working contour graph; Determining the change in the patient's chest morphology includes: determining that the patient's chest morphology is in a contracted state, or determining that the patient's chest morphology is in an expanded state.

6. The cardiopulmonary resuscitation machine according to claim 5, characterized in that: The chest circumference contraction bandage comprises a first connection area, a second connection area and a sensing area, wherein the first connection area is located at a first end of the chest circumference contraction bandage, the second connection area is located at a second end of the chest circumference contraction bandage opposite to the first end, and the sensing area is located between the first connection area and the second connection area; The sensing area is provided with a contact sensing module and a shape sensing module; the contact sensing module is used to obtain contact information on the surface of the circumferential chest contraction bandage; the shape sensing module is used to obtain shape information of the sensing area.

7. The cardiopulmonary resuscitation machine according to claim 6, characterized in that: The chest circumference contraction bandage comprises a first fabric layer and a second fabric layer which are stacked; The contact sensing module is disposed on a first surface of the first fabric layer, the first surface being a surface of the first fabric layer away from the second fabric layer, and the contact sensing module is used to obtain contact information on the first surface; The shape sensing module is disposed between the first fabric layer and the second fabric layer.

8. The cardiopulmonary resuscitation machine according to claim 6 or 7, characterized in that: The shape sensing module includes a shape sensor, the sensing area includes a shape sensing region, and the shape sensing region is extended in the length direction of the chest circumference contraction bandage; Alternatively, the sensing area includes a plurality of shape sensing areas, and the plurality of shape sensing areas are arranged at intervals or continuously in the length direction of the chest circumference contraction bandage; Wherein, one or more shape sensors are arranged in one shape sensing area.

9. The cardiopulmonary resuscitation machine according to claim 8, characterized in that: The contact sensing module includes a contact sensor, the sensing area includes a contact sensing region, and the contact sensing region is extended in the length direction of the chest circumference contraction bandage; Alternatively, the sensing area includes a plurality of contact sensing areas, and the plurality of contact sensing areas are arranged at intervals or continuously in the length direction of the chest circumference contraction bandage; Wherein, one or more touch sensors are arranged in one touch sensor area.

10. The cardiopulmonary resuscitation machine according to claim 9, characterized in that: The contact sensing area includes a pressure sensing area, the contact information includes pressure information, and the contact sensing module further includes a pressure sensor.

11. The cardiopulmonary resuscitation machine according to claim 10, characterized in that: The plurality of contact sensors and the plurality of pressure sensors are arranged in an array in pairs and staggered on the circumferential chest contraction bandage.

12. The cardiopulmonary resuscitation machine according to claim 9, characterized in that: One of the contact sensing areas corresponds to a point position information of the shape sensing area in the length direction of the chest circumference contraction bandage; Alternatively, a local position of the contact sensing area corresponds to a point position information of the shape sensing area in the length direction of the chest circumference contraction bandage.

13. The cardiopulmonary resuscitation machine according to claim 6, characterized in that: The chest circumference contraction bandage also includes: The angle sensing module has an adjustable installation position on the circumferential chest contraction bandage and is arranged between the first connection area and the sensing area, and / or between the second connection area and the sensing area. The angle sensing module is used to obtain angle information of the circumferential chest contraction bandage.

14. The cardiopulmonary resuscitation machine according to claim 7, characterized in that: Velcro is provided on the first connection area and / or the second connection area of ​​the second surface of the second fabric layer, and the second surface is a surface of the second fabric layer away from the first fabric layer.

15. The cardiopulmonary resuscitation machine according to claim 7, characterized in that: The first fabric layer and the second fabric layer are made of inelastic material.

16. The cardiopulmonary resuscitation machine according to claim 5, characterized in that: The cardiopulmonary resuscitation machine also includes: The display module is connected to the control module and is used to display the shape information, the contact information and the changes in the chest morphology of the patient.

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