阅读说明：本技术 用于胸部eit的呼吸系统模拟测试装置 (Respiratory system simulation test device for thoracic EIT ) 是由 杨八一 王伟 梁隽 于 2021-10-09 设计创作，主要内容包括：本发明提供了一种用于胸部EIT的呼吸系统模拟测试装置,所述用于胸部EIT的呼吸系统模拟测试装置包括呼吸组件、上肢模型、导电液,所述上肢模型的内部设有空腔,所述呼吸组件可固定地收容于所述空腔内；所述导电液填充于所述空腔内且位于所述呼吸组件外侧；所述呼吸组件包括左肺叶模型、右肺叶模型以及气管,所述气管通过外界设备呼气和吸气以使左肺叶模型和右肺叶模型扩张或者收缩从而作用于空腔中的导电液使导电液的高度发生变化。本发明技术方案提供的用于胸部EIT的呼吸系统模拟测试装置,有效提高了呼吸系统模拟测试装置检测的准确性。(The invention provides a respiratory system simulation test device for a chest EIT, which comprises a respiratory component, an upper limb model and a conductive liquid, wherein a cavity is arranged in the upper limb model, and the respiratory component can be fixedly contained in the cavity; the conductive liquid is filled in the cavity and is positioned outside the breathing assembly; the respiratory component comprises a left lung lobe model, a right lung lobe model and a trachea, wherein the trachea exhales and inhales through external equipment so as to expand or contract the left lung lobe model and the right lung lobe model, and therefore the height of the conducting liquid is changed by the conducting liquid acting in the cavity. The respiratory system simulation test device for the chest EIT, which is provided by the technical scheme of the invention, effectively improves the detection accuracy of the respiratory system simulation test device.)

1. A respiratory system simulation test device for chest EIT is characterized by comprising a respiratory component, an upper limb model and conductive liquid, wherein a cavity is formed in the upper limb model, the respiratory component can be fixedly contained in the cavity, and the conductive liquid is filled in the cavity and is positioned on the outer side of the respiratory component; the respiratory component comprises a left lung lobe model, a right lung lobe model and a trachea, wherein the trachea exhales and inhales through external equipment so as to expand or contract the left lung lobe model and the right lung lobe model, and therefore the height of the conducting liquid is changed by the conducting liquid acting in the cavity.

2. The simulated respiratory testing apparatus for thoracic EIT of claim 1, wherein a plurality of conductive holes are formed on the peripheral portion of the sidewall of said upper limb model, said apparatus further comprising an electrode belt attached to said plurality of conductive holes so that said electrode belt contacts with the conductive liquid, and transmits electrical signals to said conductive liquid and receives reflected electrical signals reflected by said conductive liquid, said reflected electrical signals varying with the height of said conductive liquid.

3. The respiratory simulation testing apparatus for thoracic EIT of claim 2 wherein the upper extremity model comprises a first upper extremity submodel and a second upper extremity submodel, the first upper extremity submodel and the second upper extremity submodel being separably coupled.

4. The respiratory simulation test apparatus for a thoracic EIT of claim 3, further comprising a sealing member, wherein the left and right lobe models are respectively connected with the trachea in a sealing manner through the sealing member, the first and second upper limb sub-models are connected with the trachea in a sealing manner through the sealing member, and the sealing member is further used for sealing the plurality of conductive holes.

5. The respiratory simulation testing device for thoracic EIT of claim 1 wherein the upper limb model is made of a transparent plastic material and the left and right lung lobe models and the trachea are made of colored plastic material.

6. The respiratory simulation testing apparatus for thoracic EIT of claim 1 wherein the respiratory component and upper extremity model are printed by a 3D printing device.

7. The respiratory simulation testing device for thoracic EIT of claim 6, wherein the left and right lobe models employ soft shrinkable rubber as a printing material.

8. The respiratory simulation testing apparatus for thoracic EIT of claim 4 wherein said left lung lobe model comprises a left upper lung model and a left lower lung model that are separably connected, said right lung lobe model comprises a right upper lung model and a right lower lung model that are separably connected, said left upper lung model and said left lower lung model are sealingly connected by said seal, and said right upper lung model and said right lower lung model are sealingly connected by said seal.

9. The respiratory simulation testing device for the thoracic EIT of claim 1, wherein the left and right lung lobe models have cavities inside, respectively, so that the left and right lung lobe models have hollow structures.

10. The respiratory simulation test apparatus for thoracic EIT of claim 1, wherein the trachea comprises a main trachea and two branch tracheas connected to the main trachea, the main trachea extends out from the top of the upper limb model to be connected to external breathing equipment, and the two branch tracheas are respectively contained in the left and right lobe models.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a respiratory system simulation testing device for thoracic EIT.

Background

Electrical Impedance Tomography (EIT) is a non-invasive technique for reconstructing images of tissues in a body that targets the resistivity distribution inside the human body. The human body is a large biological electric conductor, each tissue and organ has certain impedance, and when the local organ of the human body is diseased, the impedance of the local organ is different from that of other parts, so that the disease of the organ of the human body can be diagnosed by measuring the impedance.

EIT simulation detection can be firstly carried out by a simulation imaging detection device, so that a simulation analysis result can be obtained in a short time. Simulation detection device among the prior art generally comprises simple and easy nylon hollow tube, collapsible silica gel gasbag and 3 parts of support, simulates the trachea through the nylon hollow tube, and the lung is simulated to collapsible silica gel gasbag, and the support is used for supporting nylon hollow tube and collapsible silica gel gasbag. However, the existing simulation detection device is only used for simulating the lung movement in respiration, is too simple and coarse, has poor accuracy, and cannot be applied to EIT electrical impedance imaging test.

Therefore, the simple and rough analog detection device causes poor detection accuracy, which is a problem to be solved urgently.

Disclosure of Invention

The invention provides a respiratory system simulation test device for thoracic EIT, which effectively improves the detection accuracy of the respiratory system simulation test device.

The embodiment of the invention provides a respiratory system simulation test device for a chest EIT, which comprises a respiratory component, an upper limb model and a conductive liquid, wherein a cavity is arranged in the upper limb model, and the respiratory component can be fixedly accommodated in the cavity; the conductive liquid is filled in the cavity and is positioned outside the breathing assembly; the respiratory component comprises a left lung lobe model, a right lung lobe model and a trachea; the trachea exhales and inhales through external equipment to enable the left lung lobe model and the right lung lobe model to expand or contract, and therefore the conducting liquid in the cavity is acted on to enable the height of the conducting liquid to change.

Above-mentioned a respiratory simulation testing arrangement for chest EIT replaces shrink silica gel gasbag through left lung leaf model and right lung leaf model, replaces the nylon hollow tube through the trachea, thereby the trachea exhales and inhales so that left lung leaf model and right lung leaf model expansion or shrink and act on the conducting solution in the cavity and make its highly change, cooperation electrode belt, to conducting solution transmission signal of telecommunication and receipt are through the reflection signal of telecommunication that the conducting solution reflects back, reflection signal of telecommunication is along with the height of conducting solution changes and changes to be convenient for carry out EIT simulation test.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is to be understood that the drawings in the following description are merely exemplary of the invention and that other drawings may be derived from the structure shown in the drawings by those skilled in the art without the exercise of inventive faculty.

Fig. 1 is a schematic structural diagram of a respiratory system simulation testing apparatus for thoracic EIT according to an embodiment of the present invention.

Fig. 2 is a right side view of a respiratory simulation testing apparatus for thoracic EIT according to an embodiment of the present invention.

Fig. 3 is a top view of a respiratory system simulation test apparatus for thoracic EIT according to an embodiment of the present invention.

DESCRIPTION OF SYMBOLS IN THE DRAWINGS

Label name

100 10 breathing assembly for thoracic EIT

Respiratory system simulation test

Test device

11 left lung lobe model 111 left upper lung model

112 lower left lung model 12 right lung lobe model

121 right upper lung model 122 right lower lung model

20 upper limb model 21 cavity

22 a first upper limb sub-model 23 a second upper limb sub-model

24 bent part 25 conductive hole

30 conductive liquid 40 electrode belt

50 fixing piece 60 trachea

61 main gas pipe 62 bronchus

70 sealing element 41 electrode paste

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

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

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

For a clearer and more accurate understanding of the present invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings. The drawings illustrate examples of embodiments of the invention, in which like numerals represent like elements. It is to be understood that the drawings are not to scale as the invention may be practiced in practice, but are for illustrative purposes and are not to scale.

Referring to fig. 1-3, fig. 1 is a front view of a respiratory simulation testing apparatus 100 for thoracic EIT according to the present invention, fig. 2 is a right side view of the respiratory simulation testing apparatus 100 for thoracic EIT, and fig. 3 is a top view of the respiratory simulation testing apparatus 100 for thoracic EIT. The respiratory system simulation test device 100 for the chest EIT comprises a breathing assembly 10, an upper limb model 20, a conductive liquid 30, a sealing element 70 (not shown in the figure) and a fixing element 50, wherein the breathing assembly 10 is arranged in the upper limb model 20 and used for simulating the breathing action of the lung of a human body, the upper limb model 20 simulates the upper limb of the human body, the conductive liquid 30 is arranged in the upper limb model 20 and positioned outside the breathing assembly 10, the breathing action acts on the conductive liquid 30 to change the height of the conductive liquid 30, the device 100 further comprises an electrode belt 40, the device is used for transmitting an electric signal to the conductive liquid 30 and receiving a reflected electric signal reflected by the conductive liquid 30, the reflected electric signal changes along with the height change of the conductive liquid 30, and then the impedance distribution of each tissue and organ in the respiratory component 10 under the action of an electric field is calculated according to a certain reconstruction algorithm, and the computer is used for generating tomography.

Respiratory component 10 and upper limbs model 20 accessible 3D printing apparatus prints and forms, and the equipment of being convenient for produce and printing is more pleasing to the eye.

Upper limbs model 20 includes left lung lobe model 11 and right lung lobe model 12, upper limbs model 20 left lung lobe model 11 and right lung lobe model 12 all contains a plurality of bending department 24 that are the acute angle, right a plurality of bending department 24 that are the acute angle carry out radius smooth processing, avoid the user to appear the risk of fish tail skin when upper limbs model 20, left lung lobe model 11 and right lung lobe model 12 of taking.

The upper limb model 20 is made of a transparent plastic material. The upper limb model 20 has a cavity 21 for accommodating the respiratory component 10 and the conductive liquid 30. Specifically, the upper limb model 20 includes a first upper limb sub-model 22 and a second upper limb sub-model 23, and the first upper limb sub-model 22 and the second upper limb sub-model 23 are detachably connected, thereby facilitating the installation of the breathing assembly 10 in the housing chamber. When the first upper limb submodel 22 and the second upper limb submodel 23 are connected, the joint between the first upper limb submodel 22 and the second upper limb submodel 23 is sealed by a sealing member 70. The respiratory assembly 10 is connected to the first upper limb sub-model 22 by the fastener 50 such that the respiratory assembly 10 is secured within the cavity 21. The upper limb model 20 has a plurality of conductive holes 25 at the periphery of the sidewall thereof, and the sealing member 70 is also used for sealing the plurality of conductive holes 25.

Electrode belt 40 includes a plurality of electrode pastes 41, a plurality of electrode pastes 41 respectively laminate in a plurality of electrically conductive holes 25, and the power that the conducting liquid 30 extrudees or relaxes when breathing owing to receive respiratory component 10, and the height along vertical direction can change, and electrode belt 40 is towards the conducting liquid 30 transmission signal of telecommunication, and the received reflection signal changes according to the change of conducting liquid 30 height after receiving the reflection signal that is formed by conducting liquid 30 reflection.

In some other embodiments, the upper limb model 20 is made of metal, the electrode belt 40 is attached to the upper limb model 20, the electrode belt 40 transmits a signal to the upper limb model 20, the signal is reflected by the upper limb model 20 and the conductive liquid 30 to form a reflected signal, and the reflected signal is collected by the electrode belt 40.

The respiratory component 10 includes a left lobe model 11, a right lobe model 12, and a trachea 60. The left lung lobe model 11 and the right lung lobe model 12 adopt shrinkable soft rubber as a printing material. The left lung lobe model 11 and the right lung lobe model 12 have cavities inside, respectively, so that the left lung lobe model 11 and the right lung lobe model 12 are hollow structures, thereby reducing the weight of the left lung lobe model 11 and the right lung lobe model 12.

The left lung lobe model 11 includes a left upper lung model 111 and a left lower lung model 112 which are separably connected, and the right lung lobe model 12 includes a right upper lung model 121 and a right lower lung model 122 which are separably connected. The left and right lung lobe models 11 and 12 and the air tube 60 are made of colored plastic materials, so that the breathing of the left and right lung lobe models 11 and 12 can be observed through the upper limb model 20. The left upper lung model 111 and the left lower lung model 112 are connected and sealed by the sealing member 70. The right upper lung model 121 and the right lower lung model 122 are connected and sealed by the sealing member 70. The left upper lung model 111 and the upper limb model 20 are locked by the fastener 50, and the right upper lung model 121 and the upper limb model 20 are locked by the fastener 50.

The conductive liquid 30 is filled in the cavity 21 and located outside the respiratory component 10. In the present embodiment, the conductive liquid 30 is physiological saline.

The air tube 60 exhales and inhales through external equipment to expand or contract the left and right lung lobe models 11 and 12, so as to squeeze the conductive liquid 30 in the cavity 21, thereby changing the thickness of the conductive liquid 30 between the upper limb model 20 and the left and right lung lobe models 11 and 12. Specifically, the air tube 60 includes a main air tube 61 and two branch air tubes 62 connected to the main air tube 61, the main air tube 61 passes through the top of the upper limb model 20 and is connected to the external respiratory equipment, the two branch air tubes 62 are respectively accommodated in the left lung lobe model 11 and the right lung lobe model 12, and the two branch air tubes 62 are respectively sealed with the left lung lobe model 11 and the right lung lobe model 12 by a sealing member 70. The main air tube 61 and the branch air tube 62 also include a plurality of sharp-angled bends 24, and the sharp-angled bends 24 are also rounded and smoothed.

The above-mentioned respiratory simulation testing arrangement 100 for chest EIT replaces shrink silica gel gasbag through left lung lobe model 11 and right lung lobe model 12, replaces the nylon hollow tube through trachea 60, trachea 60 exhales and inhales through external equipment so that left lung lobe model 11 and right lung lobe model 12 expand or shrink to conductive liquid 30 in the extrusion cavity 21, so that the thickness of conductive liquid 30 between upper limbs model 20 and left lung lobe model 11 and right lung lobe model 12 changes, thereby is convenient for carry out EIT simulation test. Meanwhile, the components of the respiratory system simulation test device 100 are designed to be separable, so that the device is convenient to disassemble and assemble in the using process.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, insofar as these modifications and variations of the invention fall within the scope of the claims of the invention and their equivalents, the invention is intended to include these modifications and variations.

The above-mentioned embodiments are only examples of the present invention, which should not be construed as limiting the scope of the present invention, and therefore, the present invention is not limited by the claims.