Device for assisting radiotherapy patient in deep inspiration and breath holding

Abstract

The utility model relates to the technical field of medical instruments, and discloses a device for assisting a radiotherapy patient in deep inspiration and breath-holding, which comprises an inflatable air bag and a breath-holding control system which are connected through an oxygen supply pipe, the inflatable air bag is connected with an oxygen input pipe and a second exhaust pipe, and the breath-holding control system comprises a controller, an inspiration pipe, an expiration pipe and a first exhaust pipe. One ends of the inspiration pipe and the expiration pipe are connected with the ventilation mask, the other ends of the inspiration pipe and the expiration pipe are connected with the oxygen supply pipe and the first exhaust pipe respectively, a flow regulating valve is arranged at the joint of the oxygen supply pipe and the inspiration pipe, a first electric control valve is arranged at the joint of the expiration pipe and the first exhaust pipe, and a second electric control valve is arranged on the second exhaust pipe. The second electric control valve is in wireless communication connection with the controller, an inspiration one-way valve is arranged on the inspiration pipe, and an expiration one-way valve is arranged on the expiration pipe. The oxygen supply device can be matched with a DI BH control system to supply oxygen to a patient and monitor the breathing state of the patient, and the patient is assisted in performing long-time and high-success-rate deep inspiration breath-holding breathing movement.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and in particular to a device for assisting radiotherapy patients in deep inhalation and breath-holding. Background Art

[0002] Radiotherapy, or RT for short, is one of the main means of treating malignant tumors. For thoracic and abdominal tumors (such as tumors in the middle and lower lobes of the lungs, liver, pancreas, etc.), respiratory motion directly affects radiotherapy positioning, tumor target delineation, planning design, and treatment accuracy, thereby increasing the uncertainty of radiotherapy. Therefore, respiratory motion management is an essential part of precision radiotherapy.

[0003] At present, the commonly used respiratory movement management methods in clinical practice mainly include 4D-CT, gating, tumor tracking, abdominal pressure, breath holding, etc. Among them, breath holding technology can effectively reduce the movement of tumors during treatment, thereby reducing the irradiation range and causing lower radiation doses to organs at risk. The most commonly used breath holding technology in clinical practice is usually Deep Inspiratory Breath-Hold (DIBH), which trains patients before treatment so that the breath holding volume of each inhalation is maintained at the same level, and the tumor is radiotherapyed during the breath holding period. The use of this technology basically eliminates the influence of respiratory movement on tumor radiotherapy, and while increasing the volume of the lungs through inhalation, other organs at risk are kept away from the tumor target area, effectively reducing the radiation dose received by the organs at risk.

[0004] In order to improve the efficiency of DI BH in clinical practice, patients usually need to be trained to hold their breath for 20-40 seconds. However, in current clinical practice, some patients can only hold their breath for 15-20 seconds, and the success rate of breath holding that meets clinical treatment requirements is low. Frequent attempts to hold the breath during treatment will reduce the breath holding repetition rate, cause psychological burden on patients, and affect treatment accuracy and efficiency.

[0005] During conventional DI BH, the radiotherapy equipment is connected to the DI BH control system to monitor the patient's breathing coordination and whether the breath holding meets the requirements, and to control the radiotherapy equipment to allow treatment only when the tumor target is in the correct position. Studies have shown that supplying oxygen to the patient by passing oxygen into the patient's breathing duct can extend the patient's breath holding time and increase the success rate of breath holding. However, in the clinically used respiratory system, exhalation and inhalation share the same duct, which can only assist the patient to hold his breath while breathing air. In the case of continuous oxygen supply, if exhalation and inhalation share the same duct, the airflow will interfere with each other, reducing the fluency of breathing and increasing the difficulty of respiratory signal detection.

[0006] Therefore, the present application provides a ventilation device that cooperates with a DI BH control system to supply oxygen to a patient and monitor the patient's respiratory status. Utility Model Content

[0007] The utility model provides a device for assisting radiotherapy patients in deep inhalation and breath-holding, which can cooperate with a DI BH control system to supply oxygen to the patient and monitor the patient's breathing state, and assist the patient in performing deep inhalation and breath-holding breathing exercises for a long time with a high success rate.

[0008] In order to achieve the above technical purpose, the technical solution adopted by the utility model is:

[0009] A device for assisting radiotherapy patients in deep inhalation and breath holding, comprising an inflatable airbag and a breath holding control system connected through an oxygen supply tube, the inflatable airbag is connected to an oxygen input tube and an exhaust tube 2, the breath holding control system comprises a controller, an inhalation tube, an exhalation tube, and an exhaust tube 1, one end of the inhalation tube and the exhalation tube is connected to a ventilation mask, and the other end is respectively connected to the oxygen supply tube and the exhaust tube 1, a flow regulating valve is provided at the connection between the oxygen supply tube and the inhalation tube, an electric-controlled valve 1 is provided at the connection between the exhalation tube and the exhaust tube 1, an electric-controlled valve 2 is provided on the exhaust tube 2, the flow regulating valve and the electric-controlled valve 1 are electrically connected to the controller, the electric-controlled valve 2 is wirelessly connected to the controller, an inhalation check valve is provided on the inhalation tube, and an exhalation check valve is provided on the exhalation tube.

[0010] Furthermore, a pressure sensor is provided inside the inflatable airbag, and the pressure sensor is wirelessly connected to the controller.

[0011] Furthermore, a flow sensor 1 is provided at the connection between the oxygen supply tube and the inhalation tube, and a flow sensor 2 is provided at the connection between the exhalation tube and the exhaust tube. The flow sensor 1 and the flow sensor 2 are electrically connected to the controller.

[0012] Furthermore, a numerical display screen is provided on the controller housing, and flow sensor 1 and flow sensor 2 are both electrically connected to the numerical display screen.

[0013] Furthermore, the controller is connected to the DI BH system via a data line.

[0014] Furthermore, the ventilation mask is provided with a nose clip.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model can monitor the patient's breathing state, cooperate with the DI BH control system, supply oxygen according to the patient's breath-holding state, and can also adjust the oxygen flow rate, so as to assist the patient to perform deep inhalation breath-holding breathing exercises for a long time with a high success rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] In the figure: 1-oxygen input tube, 2-inflatable air bag, 3-oxygen supply tube, 4-numerical display screen, 41-flow regulating valve, 42-electrically controlled valve 1, 43-flow sensor 1, 44-flow sensor 2, 45-electrically controlled valve 2, 5-controller, 6-inhalation tube, 7-expiration tube, 8-exhaust tube 1, 9-exhaust tube 2, 10-inhalation check valve, 11-expiration check valve. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] In the description of the embodiments of the present application, it should be noted that the indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when in use, or is the orientation or position relationship commonly understood by technical personnel in this field. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0022] In the description of the embodiments of the present application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] As shown in the figure, a device for assisting radiotherapy patients to hold their breath during deep inspiration includes an inflatable airbag 2 and a breath-holding control system connected through an oxygen supply tube 3. The inflatable airbag 2 is connected to an oxygen input tube 1 and an exhaust tube 9, and a pressure sensor is provided inside the inflatable airbag 2. The breath-holding control system includes a controller 5, an inhalation tube 6, an exhalation tube 7, and an exhaust tube 8. One end of the inhalation tube 6 and the exhalation tube 7 is connected to a ventilation mask, and a nose clip is provided on the ventilation mask. The other ends are respectively connected to the oxygen supply tube 3 and the exhaust tube 8. A flow sensor 43 and a flow regulating valve 41 are provided at the connection between the oxygen supply tube 3 and the inhalation tube 6. A flow sensor 44 and an electric control valve 42 are provided at the connection between the exhalation tube 7 and the exhaust tube 8. An electric control valve 45 is provided on the exhaust tube 9. The flow regulating valve 41 and the electric control valve 42 are electrically connected to the controller 5. The electric control valve 45 and the pressure sensor are wirelessly connected to the controller 5. Wireless signals can be transmitted between the electric control valve 2 45, the pressure sensor and the controller 5, and the controller 5 can wirelessly control the opening and closing of the electric control valve 2 45. A numerical display screen 4 is provided on the outer shell of the controller 5, and the flow sensor 1 43 and the flow sensor 2 44 on the inspiratory tube 6 and the expiratory tube 7 are electrically connected to the numerical display screen 4, and the monitored gas flow data in the pipeline can be displayed on the display screen, and the patient's inhalation, exhalation and breath holding process can be monitored; when the flow sensor 1 43 and the flow sensor 2 44 detect that there is gas flowing through the inspiratory tube 6 and the expiratory tube 7, the patient is in the inhalation and exhalation state at this time, and when the flow sensor 1 43 and the flow sensor 2 44 do not detect that there is gas flowing through the inspiratory tube 6 and the expiratory tube 7, the patient is in the breath holding state at this time.

[0024] The present application sets an inhalation pipe 6 and an exhalation pipe 7 to separate the pipes for exhalation and inhalation to reduce airflow interference. An inhalation check valve 10 is provided on the inhalation pipe 6, and the gas can only flow in the inhalation pipe 6 along the inhalation direction. An exhalation check valve 11 is provided on the exhalation pipe 7, and the gas can only flow in the exhalation pipe 7 along the exhalation direction. This ensures that the inhaled gas can only be the oxygen transported by the inhalation pipe 6, and the exhaled gas can only come out from the exhalation pipe 7.

[0025] When in use, the controller 5 is connected to the DIBH system, and the breath-holding time and maximum inhalation volume of the patient are first evaluated. In the DIBH system, 70-80% of the patient's maximum inhalation volume is set as the breath-holding threshold, and the pressure threshold of the inflatable airbag 2 is set according to the capacity of the inflatable airbag 2 corresponding to 70-80% of the patient's maximum inhalation volume; the patient is instructed to wear a ventilation mask and use a nose clip, stop breathing through the nose, and use the inhalation tube 6 and the exhalation tube 7 for oral breathing; oxygen first enters the inflatable airbag 2 through the oxygen input tube 1, and the patient is instructed to take a deep breath and hold his breath. When the inhalation volume reaches the breath-holding threshold range, the controller 5 controls the flow regulating valve 4 1. The electric control valve 42 is closed, the breathing passage is closed, and the patient begins to hold his breath; at this time, oxygen continues to enter the inflatable airbag 2 through the oxygen inlet tube 1. When the pressure sensor senses that the pressure in the inflatable airbag 2 exceeds the set threshold, it is fed back to the controller 5 to control the electric control valve 45 set at the exhaust pipe 9 to open and discharge oxygen, thereby maintaining a fixed capacity of the inflatable airbag 2; after the breath holding ends, the controller 5 controls the flow regulating valve 41 and the electric control valve 42 to open, the breathing passage is opened, and the patient can breathe normally. At this time, when the pressure in the inflatable airbag 2 is less than the set threshold, the electric control valve 45 is closed to stop the discharge of oxygen.

[0026] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A device for assisting radiotherapy patients in deep inspiration and breath holding, characterized in that: The invention comprises an inflatable air bag (2) connected via an oxygen supply pipe (3) and a breath holding control system. The inflatable air bag (2) is connected to an oxygen input pipe (1) and an exhaust pipe (9). The breath holding control system comprises a controller (5), an inhalation pipe (6), an exhalation pipe (7), and an exhaust pipe (8). One end of the inhalation pipe (6) and the exhalation pipe (7) are connected to a ventilation mask, and the other ends are connected to the oxygen supply pipe (3) and the exhaust pipe (8). The connection between the oxygen supply pipe (3) and the inhalation pipe (6) is A flow regulating valve (41) is provided, an electric control valve (42) is provided at the connection between the exhalation pipe (7) and the exhaust pipe (8), an electric control valve (45) is provided on the exhaust pipe (9), the flow regulating valve (41), the electric control valve (42) are electrically connected to the controller (5), the electric control valve (45) is wirelessly connected to the controller (5), an inhalation check valve (10) is provided on the inhalation pipe (6), and an exhalation check valve (11) is provided on the exhalation pipe (7).

2. The device for assisting radiotherapy patients in deep inspiration and breath holding according to claim 1, characterized in that: A pressure sensor is provided inside the inflatable airbag (2), and the pressure sensor is wirelessly connected to the controller (5).

3. The device for assisting radiotherapy patients in deep inspiration and breath holding according to claim 1, characterized in that: A flow sensor 1 (43) is provided at the connection between the oxygen supply pipe (3) and the inhalation pipe (6), and a flow sensor 2 (44) is provided at the connection between the exhalation pipe (7) and the exhaust pipe 1 (8). The flow sensor 1 (43) and the flow sensor 2 (44) are electrically connected to the controller (5).

4. The device for assisting radiotherapy patients in deep inspiration and breath holding according to claim 3, characterized in that: A numerical display screen (4) is provided on the housing of the controller (5), and flow sensor 1 (43) and flow sensor 2 (44) are both electrically connected to the numerical display screen (4).

5. The device for assisting radiotherapy patients in deep inspiration and breath holding according to claim 1, characterized in that: The controller (5) is connected to the DIBH system via a data line.

6. The device for assisting radiotherapy patients in deep inspiration and breath holding according to claim 1, characterized in that: A nose clip is provided on the ventilation mask.

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