A respiratory control device for CT examination

Abstract

This utility model discloses a respiratory control device for CT examinations, belonging to the field of medical auxiliary equipment technology. It includes an inhalation bag and an inlet / outlet tube. The inlet / outlet tube is connected to the inhalation bag and communicates with the inside of the bag. A valve body is installed inside the inlet / outlet tube to control the inflow and outflow of gas. The valve body includes a first sealing cylinder, a second sealing cylinder, and a spring connecting the first and second sealing cylinders. During inflation, the first sealing cylinder moves inwards; during inhalation, the second sealing cylinder moves outwards. By incorporating the valve body and auxiliary device, the inhalation amplitude of the patient during CT examinations can be effectively controlled, ensuring consistency in inhalation amplitude across multiple examinations. This significantly reduces image deviations caused by varying inhalation amplitudes, allowing doctors to more accurately compare images from different CT scans, thereby more precisely determining changes in pulmonary nodules and improving the accuracy of disease diagnosis.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary equipment technology, and in particular to a respiratory control device for CT examination. Background Technology

[0002] In the field of modern medical diagnostics, accurate diagnosis and scientific follow-up of pulmonary nodules are crucial, and chest CT scans play an irreplaceable role as a core diagnostic tool. During a CT scan, to obtain clear, accurate, and comparative images of the lungs, patients are asked to take a deep breath and hold it before the scan to acquire the images. The principle behind this procedure is that a deep breath allows the lungs to fully expand, maximizing the visualization of lung tissue details and exposing potential pulmonary nodules, providing doctors with detailed information for diagnosis.

[0003] The normal lung capacity of an adult male is approximately 3500 to 4500 ml, while that of an adult female is typically between 2500 and 3500 ml. Lung capacity is influenced by various factors, including gender, age, and physical condition. If the inspiratory volume during a follow-up scan differs from the previous inspiratory volume, it will lead to differences in the degree of lung expansion. This will cause discrepancies in the relative position, shape, and size of lung nodules in the two scans, thus interfering with the doctor's ability to accurately assess changes in the nodules by comparing the two images. Utility Model Content

[0004] The purpose of this invention is to solve the problem mentioned in the background art, where inconsistent breathing amplitudes in patients interfere with doctors' ability to compare two images and accurately judge changes in lung nodules.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A respiratory control device for CT scans includes an inhalation bag and an inlet / outlet tube. The inlet / outlet tube is connected to the inhalation bag and communicates with the inside of the inhalation bag. A valve body is provided inside the inlet / outlet tube to control the inflow and outflow of gas. The valve body includes a first sealing cylinder, a second sealing cylinder, and a spring connecting the first sealing cylinder and the second sealing cylinder. When inflating, the first sealing cylinder moves inward toward the bag, and when inhaling, the second sealing cylinder moves outward toward the bag. The valve body allows a certain amount of air to be stored inside the inhalation bag.

[0006] Preferably, the two ends of the sealing cylinder are respectively provided with a through hole one and a through hole two, the sealing cylinder one is located inside the sealing cylinder two, the circumferential surface of the sealing cylinder two is provided with a through groove, and an abutment plate passing through the through groove is fixedly connected to the sealing cylinder one.

[0007] Preferably, one end of the sealing cylinder is sealed with a sealing plate having a sealing through hole, and the sealing plate and the sealing cylinder are integrally formed.

[0008] Preferably, a fixing ring is fixedly connected inside the air inlet and outlet pipe, and a sealing ring is fixedly connected to one end of the sealing cylinder. The sealing ring and the abutment plate are located on both sides of the fixing ring, and the sealing ring is tightly fitted with the fixing ring, sealing one side of the sealing and mating fixing ring.

[0009] Preferably, the fixing ring is sleeved on the sealing cylinder two, and the through groove extends to the end sealing ring.

[0010] Preferably, an abutment block is fixed on the abutment plate, the abutment block contacts the fixing ring, and there is a gap between the abutment plate and the fixing ring for ventilation.

[0011] Preferably, the gap is in communication with the inside of the air bag.

[0012] Preferably, the other end of the sealing cylinder has a raised ring, and a raised block is fixedly connected to the circumference of the raised ring, the raised block being in contact with the inner wall of the inlet and outlet pipes.

[0013] Preferably, a protective component is connected to the air inlet and outlet pipes. The protective component includes a protective cylinder threaded onto the air inlet and outlet pipes, and an abutment plate is fixedly connected inside the protective cylinder. The abutment plate contacts the sealing ring.

[0014] Preferably, the end of the air inlet / outlet pipe has an extension tube, which facilitates air intake.

[0015] Compared with the prior art, the present invention has the following beneficial effects: By setting up valves and auxiliary devices, the patient's inspiratory amplitude during CT scans can be effectively controlled, ensuring consistency in inspiratory amplitude across multiple scans. This significantly reduces image deviations caused by variations in inspiratory amplitude, allowing doctors to more accurately compare images from different CT scans, thereby more precisely determining changes in pulmonary nodules and improving the accuracy of disease diagnosis. The protective design prevents gas from leaking out when the inhalation bag is accidentally squeezed, avoiding potential discomfort to patients and damage to the equipment caused by gas leakage, thus ensuring the safety and reliability of the equipment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the extension tube of this utility model.

[0019] Figure 3 This is a cross-sectional schematic diagram of the protective cylinder and the air inlet / outlet pipe of this utility model.

[0020] Figure 4 This is a cross-sectional view of the valve body of this utility model.

[0021] Figure 5 This is a schematic diagram showing the separation of the sealing tube 1 and the fixing ring of this utility model.

[0022] Figure 6 This is a schematic diagram of the auxiliary device of this utility model.

[0023] Drawing number descriptions: 1. Suction bag; 2. Inlet / outlet pipe; 21. Fixing ring; 22. Extension pipe; 3. Valve body; 31. Sealing sleeve one; 311. Abutment plate; 312. Sealing plate; 313. Abutment block; 32. Sealing sleeve one; 321. Sealing ring; 322. Protruding ring; 323. Protruding block; 33. Spring; 34. Through hole one; 35. Through hole two; 36. Through groove; 37. Gap; 4. Protective component; 41. Protective cylinder; 42. Abutment plate; 5. Auxiliary device; 51. Measuring bottle; 52. Suction pipe; 53. Connecting pipe; 54. Threaded cap; 55. Measuring cup; 56. Output pipe; 57. Hose. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0026] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0027] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0028] Please see Figure 1 - Figure 6 A respiratory control device for CT examination includes an inhalation bag 1 and an inlet / outlet tube 2. The inlet / outlet tube 2 is connected to the inhalation bag 1 and communicates with the inside of the inhalation bag 1. A valve body 3 for controlling the inflow and outflow of gas is provided inside the inlet / outlet tube 2. The valve body 3 includes a first sealing cylinder 31, a second sealing cylinder 32, and a spring 33 connecting the first sealing cylinder 31 and the second sealing cylinder 32. When inflating, the first sealing cylinder 31 moves inward toward the bag, and when inhaling, the second sealing cylinder 32 moves outward toward the bag.

[0029] The two ends of the sealing cylinder 32 are respectively provided with through holes 34 and 35. The sealing cylinder 31 is located inside the sealing cylinder 32. A through groove 36 is provided on the circumferential surface of the sealing cylinder 32. An abutment plate 311 passing through the through groove 36 is fixedly connected to the sealing cylinder 31, and the abutment plate 311 is slidably connected to the sealing cylinder 32. One end of the sealing cylinder 31 has a sealing plate 312 that seals the through hole 34. The sealing plate 312 is integral with the sealing cylinder 31.

[0030] A fixing ring 21 is fixedly connected inside the inlet / outlet pipe 2. A sealing ring 321 is fixedly connected to one end of the sealing cylinder 32. A through hole 34 is formed on the sealing ring 321. The sealing ring 321 and the abutment plate 311 are located on both sides of the fixing ring 21, and the sealing ring 321 fits tightly with the fixing ring 21. The fixing ring 21 is sleeved on the sealing cylinder 32, and the through groove 36 extends to the end sealing ring 321.

[0031] An abutment block 313 is fixed on the abutment plate 311. The abutment block 313 contacts the fixing ring 21. There is a gap 37 between the abutment plate 311 and the fixing ring 21, which allows the internal space of the fixing ring 21 to communicate with the inside of the air bag 1. During inflation and inhalation, gas can flow between the air bag 1 and the external environment through this gap 37.

[0032] The other end of the sealing cylinder 32 has a raised ring 322. The two ends of the spring 33 are connected to the abutment plate 311 and the raised ring 322. A raised block 323 is fixedly connected in the circumferential direction of the raised ring 322. The raised block 323 contacts the inner wall of the air inlet and outlet pipe 2. The raised block 323 increases the stability of the sealing cylinder 32 and prevents the sealing cylinder 32 from shaking or shifting during movement, ensuring that the valve body 3 can work normally and stably.

[0033] A protective component 4 is connected to the inlet / outlet pipe 2. The protective component 4 includes a protective cylinder 41 threaded onto the inlet / outlet pipe 2. An abutment plate 42 is fixedly connected inside the protective cylinder 41. The abutment plate 42 contacts the sealing ring 321. Through the abutment of the abutment plate 42, when the air bag 1 is accidentally squeezed, the abutment plate 42 can block the flow of gas. The end of the inlet / outlet pipe 2 has an extension tube 22. The extension tube 22 is circular and can directly suck in air. During inflation, the extension tube 22 and the inflation device are connected through a hose 57 to inflate a fixed amount of air into the air bag 1. The fixed inflation device is existing technology and will not be described in detail. After the protective component 4 is installed, the extension tube 22 is still connected to the outside.

[0034] To facilitate the determination of the patient's inspiratory volume during examination, this application adds an auxiliary device 5, which includes a measuring bottle 51 with graduations. The measuring bottle 51 has an inhalation tube 52 and a connecting tube 53 on its two sides. The connecting tube 53 is located above the graduations and is lower than the inhalation tube 52. The measuring bottle 51 has a threaded cap 54 on its upper side. Opening the threaded cap 54 allows for easy pouring out of the water inside the measuring bottle 51, facilitating cleaning and reuse.

[0035] A measuring cup 55 is provided on one side of the measuring bottle 51. Both the measuring cup 55 and the measuring bottle 51 are made of transparent plastic. The measuring cup 55 contains water and has graduations. The graduations on the measuring cup 55 are larger than those on the measuring bottle 51. An output tube 56 is located on the lower side of the measuring cup 55. The connecting tube 53 and the output tube 56 are connected by a flexible tube 57. Both ends of the flexible tube 57 are tightly inserted into the connecting tube 53 and the output tube 56, respectively. The water in the measuring cup 55 is close to the bottom of the connecting tube 53 (e.g., water in the measuring cup 55). Figure 6 (As shown) To reduce measurement errors, the patient holds the inhalation tube 52 in their mouth and remains relaxed. Instruct the patient to inhale slowly through the inhalation tube 52, observing the rise of the water in the measuring bottle 51. After the patient completes one inhalation, record the reading on the measuring bottle 51 to obtain the patient's inhalation volume. To ensure measurement accuracy, the patient can perform multiple inhalation measurements, and the average value is taken as the final inhalation volume. Then, using a metered inflation device, fill the inhalation bag 1 with the same metered volume of air as the patient's inhalation through the hose 57 and extension tube 22. During the patient's follow-up examination, the same metered volume of air is filled into the inhalation bag 1 for the patient to inhale, thus ensuring consistent inhalation amplitude between the two examinations.

[0036] When air is filled into the air bag 1 using the inflation device, the pressure generated by the gas will push the sealing cylinder 31 to move inward. At this time, the spring 33 will be compressed and store elastic potential energy, and the through hole 34 will open, allowing air to enter the air bag through the through groove 36 and the gap 37. When the metering device stops inflation, the spring 33 will cause the sealing cylinder 31 to return to its original position and seal the inside of the through hole 34.

[0037] During inhalation, the gas pressure inside the inhalation bag (1) decreases, and the sealing sleeve (32) of the valve body (3) moves outward under the action of external atmospheric pressure and the elastic force of the spring (33). Gas enters the patient's body from the inhalation bag (1) through the gap (37), the fixing ring (21), and the through hole (34). When the patient finishes inhaling, the inhalation bag (1) can be removed. After the inhalation bag (1) is removed, the sealing sleeve (32) will automatically return to its initial position.

[0038] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A respiratory control device for CT examination, characterized in that, include: Inhalation bag (1); An inlet / outlet pipe (2) is connected to an air bag (1). The inlet / outlet pipe (2) is connected to the inside of the air bag (1). A valve body (3) for controlling the inlet and outlet of gas is provided inside the inlet / outlet pipe (2). The valve body (3) includes a sealing cylinder one (31), a sealing cylinder two (32), and a spring (33) connecting the sealing cylinder one (31) and the sealing cylinder two (32). When inflating, the sealing cylinder one (31) moves inward toward the inside of the bag. When inhaling, the sealing cylinder two (32) moves outward toward the outside of the bag.

2. The respiratory control device for CT examination according to claim 1, characterized in that: The two ends of the sealing cylinder 2 (32) are respectively provided with through hole 1 (34) and through hole 2 (35). The sealing cylinder 1 (31) is located inside the sealing cylinder 2 (32). A through groove (36) is provided on the circumferential surface of the sealing cylinder 2 (32). An abutment plate (311) passing through the through groove (36) is fixedly connected to the sealing cylinder 1 (31).

3. A respiratory control device for CT examination according to claim 2, characterized in that: One end of the sealing cylinder (31) has a sealing plate (312) with a sealing through hole (34).

4. A respiratory control device for CT examination according to claim 3, characterized in that: A fixing ring (21) is fixedly connected inside the air inlet / outlet pipe (2), and a sealing ring (321) is fixedly connected to one end of the sealing cylinder (32). The sealing ring (321) and the abutment plate (311) are located on both sides of the fixing ring (21), and the sealing ring (321) is tightly fitted with the fixing ring (21).

5. A respiratory control device for CT examination according to claim 4, characterized in that: The fixing ring (21) is fitted onto the sealing cylinder (32), and the through groove (36) extends to the end sealing ring (321).

6. A respiratory control device for CT examination according to claim 4, characterized in that: An abutment block (313) is fixed on the abutment plate (311), the abutment block (313) contacts the fixing ring (21), and there is a gap (37) between the abutment plate (311) and the fixing ring (21).

7. A respiratory control device for CT examination according to claim 6, characterized in that: The gap (37) is connected to the inside of the air bag (1).

8. A respiratory control device for CT examination according to claim 7, characterized in that: The other end of the sealing cylinder (32) has a protruding ring (322), and a protruding block (323) is fixedly connected to the protruding ring (322) in the circumferential direction. The protruding block (323) is in contact with the inner wall of the inlet and outlet pipe (2).

9. A respiratory control device for CT examination according to claim 4, characterized in that: The inlet and outlet pipe (2) is connected to a protective component (4), which includes a protective cylinder (41) threadedly connected to the inlet and outlet pipe (2). An abutment plate (42) is fixedly connected inside the protective cylinder (41), and the abutment plate (42) contacts the sealing ring (321).

10. A respiratory control device for CT examination according to claim 9, characterized in that: The end of the air inlet / outlet pipe (2) has an extension pipe (22).

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