Single-pump bidirectional medical balloon pressure control system, balloon pressure control method and medical endoscope

Abstract

This invention provides a single-pump bidirectional medical airbag pressure control system, an airbag pressure control method, and a medical endoscope. The single-pump bidirectional medical airbag pressure control system includes an airbag, a first two-position three-way solenoid valve, a second two-position three-way solenoid valve, and an air pump. The airbag's vent is connected to the normally closed end of the first two-position three-way solenoid valve, the normally open end of the first two-position three-way solenoid valve is connected to the atmosphere, and the common end of the first two-position three-way solenoid valve is connected to the air pump's inlet. The air pump's exhaust port is connected to the common end of the second two-position three-way solenoid valve, the normally closed end of the second two-position three-way solenoid valve is connected to the airbag's vent, and the normally open end of the second two-position three-way solenoid valve is connected to the atmosphere. This application achieves unidirectional air pump inflation and deflation of the airbag through the opening and closing combination of the two two-position three-way solenoid valves. When the inflation (deflation) pressure reaches a preset value, the power supply to the air pump is cut off, and the gas pressure is maintained through the opening and closing combination of the two two-position three-way solenoid valves.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to a single-pump bidirectional medical airbag pressure control system, an airbag pressure control method, and a medical endoscope. Background Technology

[0002] Current medical balloon control devices (such as endoscopic balloon controllers) typically employ a dual-pump architecture, consisting of a dedicated air supply pump and a dedicated suction pump. The system monitors pressure via pressure sensors and regulates balloon pressure by controlling the start and stop of the two pumps and the on / off state of solenoid valves. When the pressure reaches a predetermined value, the system usually relies on frequent switching of the solenoid valves to maintain the pressure. Existing technology has the following drawbacks: First, it is costly and structurally complex: the need for two power sources (pumps) increases the system's hardware cost, internal space requirements, and assembly complexity. Second, it is noisy: the pumps typically run continuously during operation, and even during the maintenance phase after the predetermined pressure is reached, the lack of an effective physical pressure-maintaining circuit means the pumps still need to frequently replenish / de-inflate, generating significant operating room noise. Third, it lacks sufficient safety redundancy: existing pressure protection relies entirely on electronic sensors and software algorithms; if the pressure sensor fails or the control software malfunctions, the system may continue to inflate, potentially causing the balloon to rupture, posing a safety hazard.

[0003] Therefore, this application is hereby submitted. Summary of the Invention

[0004] The present invention aims to provide a single-pump bidirectional medical airbag pressure control system, an airbag pressure control method, and a medical endoscope, which can achieve bidirectional gas flow to control the airbag system based on a single air pump and an air path switching unit, simplifying the structure and reducing costs.

[0005] The embodiments of the present invention can be implemented as follows: In a first aspect, the present invention provides a single-pump bidirectional medical airbag pressure control system, comprising an airbag, a first two-position three-way solenoid valve, a second two-position three-way solenoid valve, and an air pump; The air vent of the airbag is connected to the normally closed end of the first two-position three-way solenoid valve, the normally open end of the first two-position three-way solenoid valve is connected to the atmosphere, and the common end of the first two-position three-way solenoid valve is connected to the air inlet of the air pump. The exhaust port of the air pump is connected to the common terminal of the second two-position three-way solenoid valve, the normally closed terminal of the second two-position three-way solenoid valve is connected to the vent of the airbag, and the normally open terminal of the second two-position three-way solenoid valve is connected to the atmosphere.

[0006] In an optional implementation, the normally open terminal of the first two-position three-way solenoid valve is connected to the first silencer, and the normally open terminal of the second two-position three-way solenoid valve is connected to the second silencer.

[0007] In an optional embodiment, a four-way connector is also included, wherein the first interface of the four-way connector is connected to the air vent of the airbag, the second interface is connected to the normally closed end of the first two-position three-way solenoid valve, and the third interface is connected to the normally closed end of the second two-position three-way solenoid valve.

[0008] In an optional embodiment, a pressure sensor for testing the gas pressure inside the airbag is also included; And / or, it also includes a pressure relief valve disposed between the second two-position three-way solenoid valve and the air pump.

[0009] Secondly, the present invention provides a method for controlling airbag pressure using the single-pump bidirectional medical airbag pressure control system described in any of the foregoing embodiments. When the airbag is inflated, the second two-position three-way solenoid valve is enabled, and the first two-position three-way solenoid valve is disabled. When the airbag is deflated, the first two-position three-way solenoid valve is enabled, and the second two-position three-way solenoid valve is disabled. When the airbag is pressurized, both the first two-position three-way solenoid valve and the second two-position three-way solenoid valve are disabled.

[0010] Thirdly, the present invention provides a single-pump bidirectional medical airbag pressure control system, comprising an airbag, a first two-position two-way valve, a second two-position two-way valve, a third two-position two-way valve, a fourth two-position two-way valve, and an air pump; The air vent of the airbag is connected to the inlet of the first two-position two-way valve, and the outlet of the first two-position two-way valve is connected to the air inlet of the air pump through a first air pipe; a first branch pipe is provided on the first air pipe, and a second two-position two-way valve and a first silencer are connected in sequence on the first branch pipe. The exhaust port of the air pump is connected to the inlet of the fourth two-position two-way valve through a second air pipe, and the outlet of the fourth two-position two-way valve is connected to the air vent of the airbag; a second branch pipe is provided on the second air pipe, and a third two-position two-way valve and a second silencer are connected in sequence on the second branch pipe.

[0011] In an optional embodiment, a four-way connector is also included, wherein the first interface of the four-way connector is connected to the air vent of the airbag, the second interface is connected to the inlet of the first two-position two-way valve, and the third interface is connected to the outlet of the fourth two-position two-way valve.

[0012] In an optional embodiment, a pressure sensor for testing the gas pressure inside the airbag is also included; And / or, it also includes a pressure relief valve disposed between the second two-position two-way valve and the air pump.

[0013] Fourthly, the present invention provides a method for controlling the pressure of a single-pump bidirectional medical airbag pressure control system using any one of the foregoing embodiments. When the airbag is inflated, the second two-position two-way valve and the fourth two-position two-way valve are enabled, while the first two-position two-way valve and the third two-position two-way valve are disabled. When the airbag is deflated, the second two-position two-way valve and the fourth two-position two-way valve are disabled, while the first two-position two-way valve and the third two-position two-way valve are enabled. When the airbag is pressurized, the first two-position two-way valve, the second two-position two-way valve, the third two-position two-way valve, and the fourth two-position two-way valve are all disabled.

[0014] Fifthly, the present invention provides a medical endoscope, including the single-pump bidirectional medical balloon pressure control system described in any of the foregoing embodiments.

[0015] The beneficial effects of the single-pump bidirectional medical balloon pressure control system, balloon pressure control method, and medical endoscope provided in this invention include: The single-pump bidirectional medical airbag pressure control system of this application mainly achieves the inflation and deflation of the airbag by a unidirectional air pump through the opening and closing combination of two two-position three-way solenoid valves. When the inflation (deflation) pressure reaches the preset value, the power supply to the air pump is cut off. At the same time, the gas pressure is maintained by the opening and closing combination of the two two-position three-way solenoid valves. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural diagram of a single-pump bidirectional medical airbag pressure control system according to the present invention.

[0018] Figure 2 This is a schematic diagram of the airflow path during the inflation state of a single-pump bidirectional medical airbag pressure control system according to the present invention.

[0019] Figure 3 This is a schematic diagram of the airflow path during the exhaust state of a single-pump bidirectional medical airbag pressure control system according to the present invention.

[0020] Figure 4 This is a schematic diagram of the valve status and pump shutdown logic in the pressure-maintaining mode of a single-pump bidirectional medical airbag pressure control system according to the present invention.

[0021] Figure 5This is a schematic diagram of the airflow path during the inflation state of another single-pump bidirectional medical airbag pressure control system of the present invention.

[0022] Figure 6 This is a schematic diagram of the exhaust airflow path of another single-pump bidirectional medical airbag pressure control system of the present invention.

[0023] Figure 7 This is a schematic diagram of the valve status and pump shutdown logic in the pressure-maintaining mode of another single-pump bidirectional medical airbag pressure control system of the present invention.

[0024] Icons: 1-Airbag; 2-Pressure sensor; 3-Two-position three-way solenoid valve; 3a-First two-position three-way solenoid valve; 3b-Second two-position three-way solenoid valve; 4-Air pump; 5-Pressure relief valve; 6-Silencer; 6a-First silencer; 6b-Second silencer; 7-Four-way valve; 8-Air hose; 9-Luer connector; 10-Two-position two-way valve; 10a-First two-position two-way valve; 10b-Second two-position two-way valve; 10c-Third two-position two-way valve; 10d-Fourth two-position two-way valve. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0029] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0030] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0031] This invention provides a single-pump bidirectional medical airbag 1 pressure control system, such as... Figure 1-4 As shown, it includes an airbag 1, a first two-position three-way solenoid valve 3a, a second two-position three-way solenoid valve 3b, and an air pump 4; The air vent of the airbag 1 is connected to the normally closed end of the first two-position three-way solenoid valve 3a, the normally open end of the first two-position three-way solenoid valve 3a is connected to the atmosphere, and the common end of the first two-position three-way solenoid valve 3a is connected to the air inlet of the air pump 4. The exhaust port of the air pump 4 is connected to the common end of the second two-position three-way solenoid valve 3b, the normally closed end of the second two-position three-way solenoid valve 3b is connected to the air vent of the airbag 1, and the normally open end of the second two-position three-way solenoid valve 3b is connected to the atmosphere.

[0032] In an optional embodiment, the normally open end of the first two-position three-way solenoid valve 3a is connected to the first silencer 6a, and the normally open end of the second two-position three-way solenoid valve 3b is connected to the second silencer 6b.

[0033] In an optional embodiment, a four-way connector 7 is also included, wherein the first interface of the four-way connector 7 is connected to the air vent of the airbag 1, the second interface is connected to the normally closed end of the first two-position three-way solenoid valve 3a, and the third interface is connected to the normally closed end of the second two-position three-way solenoid valve 3b.

[0034] In an optional embodiment, a pressure sensor 2 for testing the gas pressure inside the airbag 1 is also included; And / or, it also includes a pressure relief valve 5 disposed between the second two-position three-way solenoid valve 3b and the air pump 4.

[0035] A mechanical pressure relief unit, such as a pressure relief valve 5, is installed in the air circuit of airbag 1. Its opening pressure is higher than the pressure control threshold but lower than the withstand limit of airbag 1. When pressure sensor 2 fails or the controller of air pump 4 malfunctions, pressure relief valve 5 can automatically release pressure to achieve physical-level safety protection.

[0036] The present invention also provides a method for controlling the pressure of a single-pump bidirectional medical airbag 1 using the pressure control system of any one of the foregoing embodiments. When the airbag 1 is inflated, the second two-position three-way solenoid valve 3b is enabled, and the first two-position three-way solenoid valve 3a is disabled. When the airbag 1 is deflated, the first two-position three-way solenoid valve 3a is enabled, and the second two-position three-way solenoid valve 3b is disabled. When the airbag 1 is pressurized, both the first two-position three-way solenoid valve 3a and the second two-position three-way solenoid valve 3b are disabled.

[0037] The single-pump bidirectional medical airbag 1 pressure control system of this application mainly achieves inflation and deflation of the airbag 1 by the unidirectional air pump 4 through the opening and closing combination of two two-position three-way solenoid valves 3. The pressure sensor 2 detects the pressure value of the airbag 1 in real time. When the inflation (deflation) pressure reaches the preset value, the power supply to the air pump 4 is cut off, and the pressure is maintained by the opening and closing combination of the two two-position three-way solenoid valves 3. Specifically, it has the following three modes: Inflation Mode: The air circuit switches two two-position three-way solenoid valves 3 to connect the output of air pump 4 to airbag 1 and the input to the outside atmosphere, thus inflating airbag 1. The control unit adjusts the drive of air pump 4 based on pressure feedback to achieve stable pressure control of airbag 1. Figure 2 As shown, when inflating airbag 1, first enable the second solenoid valve 3b (disable the first solenoid valve 3a), connect the output port of air pump 4 to airbag 1, and then enable and supply power to air pump 4. In this way, the airflow will be as follows: Figure 2 As indicated by the dashed arrow, the air pump 4 inflates the airbag 1, which can be connected to the air tube 8 via the Luer interface 9; the first silencer 6a reduces the noise generated by the airflow.

[0038] Exhaust mode: The air path switching uses two two-position three-way solenoid valves 3 to connect the input of air pump 4 to airbag 1 and the output to the outside, thus achieving exhaust from airbag 1. Figure 3 As shown, when deflating airbag 1, firstly, the first solenoid valve 3a is enabled (the second solenoid valve 3b is disabled), connecting the input port of air pump 4 to airbag 1, and then powering on air pump 4. This will cause the airflow to... Figure 3 As indicated by the dashed arrow, air is pumped from airbag 1 to the atmosphere to exhaust air from airbag 1; the second muffler 6b reduces the noise generated by airflow.

[0039] Pressure Holding Mode: The air circuit switching mechanism uses two two-position three-way solenoid valves 3 to connect the airbag 1 and the air pump 4. The control unit shuts off the air pump 4, relying on the air circuit seal to maintain pressure, thereby reducing noise and energy consumption. When there is a slight pressure leak, the control unit can intermittently drive the air pump 4 for minor compensation based on pressure changes to maintain stable pressure in the airbag 1. Figure 4 As shown, when inflating (deflating) the airbag 1, when the pressure sensor 2 detects that the pressure of the airbag 1 has reached the preset pressure value, it stops enabling the first solenoid valve 3a and the second solenoid valve 3b. At this time, the system is in a pressure-holding state, and the air pump 4 stops pumping.

[0040] The present invention also provides a single-pump bidirectional medical airbag 1 pressure control system, including an airbag 1, a first two-position two-way valve 10a, a second two-position two-way valve 10b, a third two-position two-way valve 10c, a fourth two-position two-way valve 10d, and an air pump 4; The air vent of the airbag 1 is connected to the inlet of the first two-position two-way valve 10a, and the outlet of the first two-position two-way valve is connected to the air inlet of the air pump 4 through the first air pipe 8; a first branch pipe is provided on the first air pipe 8, and a second two-position two-way valve 10b and a first silencer 6a are connected in sequence on the first branch pipe. The exhaust port of the air pump 4 is connected to the inlet of the fourth two-position two-way valve 10d through the second air pipe 8, and the outlet of the fourth two-position two-way valve 10d is connected to the air vent of the airbag 1; a second branch pipe is provided on the second air pipe 8, and a third two-position two-way valve 10c and a second muffler 6b are connected to the second branch pipe in sequence.

[0041] In an optional embodiment, a four-way connector 7 is also included, wherein the first interface of the four-way connector 7 is connected to the air vent of the airbag 1, the second interface is connected to the inlet of the first two-position two-way valve 10a, and the third interface is connected to the outlet of the fourth two-position two-way valve 10d.

[0042] In an optional embodiment, a pressure sensor 2 for testing the gas pressure inside the airbag 1 is also included; And / or, it also includes a pressure relief valve 5 disposed between the second two-position two-way valve and the air pump 4.

[0043] The present invention also provides a method for controlling the pressure of a single-pump bidirectional medical airbag 1 using the pressure control system of any one of the foregoing embodiments. When the airbag 1 is inflated, the second two-position two-way valve 10b and the fourth two-position two-way valve 10d are enabled, while the first two-position two-way valve 10a and the third two-position two-way valve 10c are disabled. When the airbag 1 is deflated, the second two-position two-way valve 10b and the fourth two-position two-way valve 10d are disabled, while the first two-position two-way valve 10a and the third two-position two-way valve 10c are enabled. When the airbag 1 is pressurized, the first two-position two-way valve 10a, the second two-position two-way valve 10b, the third two-position two-way valve 10c, and the fourth two-position two-way valve 10d are all disabled.

[0044] The single-pump bidirectional medical airbag 1 pressure control system of this application mainly achieves inflation and deflation of the airbag 1 by the unidirectional air pump 4 through the opening and closing combination of four two-position two-way valves 10, and the pressure sensor 2 detects the pressure value of the airbag 1 in real time; when the inflation (deflation) pressure reaches the preset value, the power supply to the air pump 4 is cut off, and the pressure is maintained by the opening and closing combination of the four two-position two-way valves 10. Specifically, it has the following three modes: like Figure 5 As shown, when inflating airbag 1, the second two-position two-way valve 10b and the fourth two-position two-way valve 10d are first enabled, while the first two-position two-way valve 10a and the third two-position two-way valve 10c are disabled. The output port of air pump 4 is then connected to airbag 1, and air pump 4 is then enabled to supply power. In this way, the airflow will be as follows: Figure 5 As indicated by the dashed arrow, the air pump inflates the airbag 1; the first silencer 6a reduces the noise generated by the airflow.

[0045] like Figure 6 As shown, when deflating airbag 1, first enable the first two-position two-way valve 10a and the third two-position two-way valve 10c (disable the second two-position two-way valve 10b and the fourth two-position two-way valve 10d), connect the input port of air pump 4 to airbag 1, and then enable power to air pump 4. In this way, the airflow will be as follows: Figure 6 As indicated by the dashed arrow, air is pumped from airbag 1 to the atmosphere to exhaust air from airbag 1; the second muffler 6b reduces the noise generated by airflow.

[0046] like Figure 7 As shown, when inflating (deflating) the airbag 1, when the pressure sensor 2 detects that the pressure of the airbag 1 has reached the preset pressure value, it stops enabling the second two-position two-way valve 10b, the fourth two-position two-way valve 10d, the first two-position two-way valve 10a, and the third two-position two-way valve 10c. At this time, the system is in a pressure-holding state, and the air pump 4 stops pumping.

[0047] The present invention also provides a medical endoscope, including the single-pump bidirectional medical airbag 1 pressure control system described in any of the foregoing embodiments.

[0048] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A single pump bi-directional medical balloon pressure control system, characterized by, Includes an airbag, a first two-position three-way solenoid valve, a second two-position three-way solenoid valve, and an air pump; The air vent of the airbag is connected to the normally closed end of the first two-position three-way solenoid valve, the normally open end of the first two-position three-way solenoid valve is connected to the atmosphere, and the common end of the first two-position three-way solenoid valve is connected to the air inlet of the air pump. The exhaust port of the air pump is connected to the common terminal of the second two-position three-way solenoid valve, the normally closed terminal of the second two-position three-way solenoid valve is connected to the vent of the airbag, and the normally open terminal of the second two-position three-way solenoid valve is connected to the atmosphere.

2. The single pump bi-directional medical balloon pressure control system of claim 1, wherein, The normally open terminal of the first two-position three-way solenoid valve is connected to the first silencer, and the normally open terminal of the second two-position three-way solenoid valve is connected to the second silencer.

3. The single pump bi-directional medical balloon pressure control system of claim 1, wherein, It also includes a four-way connector, wherein the first port of the four-way connector is connected to the air vent of the airbag, the second port is connected to the normally closed end of the first two-position three-way solenoid valve, and the third port is connected to the normally closed end of the second two-position three-way solenoid valve.

4. The single pump bi-directional medical balloon pressure control system of claim 1, wherein, It also includes a pressure sensor for testing the gas pressure inside the airbag; And / or, it also includes a pressure relief valve disposed between the second two-position three-way solenoid valve and the air pump.

5. A method for controlling the pressure of a medical balloon using the single-pump bidirectional medical balloon pressure control system according to any one of claims 1 to 4, characterized by, When the airbag is inflated, the second two-position three-way solenoid valve is enabled, and the first two-position three-way solenoid valve is disabled. When the airbag is deflated, the first two-position three-way solenoid valve is enabled, and the second two-position three-way solenoid valve is disabled. When the airbag is pressurized, both the first two-position three-way solenoid valve and the second two-position three-way solenoid valve are disabled.

6. A single pump bi-directional medical balloon pressure control system, characterized by, Includes an airbag, a first two-position two-way valve, a second two-position two-way valve, a third two-position two-way valve, a fourth two-position two-way valve, and an air pump; The air vent of the airbag is connected to the inlet of the first two-position two-way valve, and the outlet of the first two-position two-way valve is connected to the air inlet of the air pump through a first air pipe; a first branch pipe is provided on the first air pipe, and a second two-position two-way valve and a first silencer are connected in sequence on the first branch pipe. The exhaust port of the air pump is connected to the inlet of the fourth two-position two-way valve through a second air pipe, and the outlet of the fourth two-position two-way valve is connected to the air vent of the airbag; a second branch pipe is provided on the second air pipe, and a third two-position two-way valve and a second silencer are connected in sequence on the second branch pipe.

7. The single-pump bidirectional medical airbag pressure control system according to claim 6, characterized in that, It also includes a four-way connector, wherein the first port of the four-way connector is connected to the air vent of the airbag, the second port is connected to the inlet of the first two-position two-way valve, and the third port is connected to the outlet of the fourth two-position two-way valve.

8. The single-pump bidirectional medical airbag pressure control system according to claim 6, characterized in that, It also includes a pressure sensor for testing the gas pressure inside the airbag; And / or, it also includes a pressure relief valve disposed between the second two-position two-way valve and the air pump.

9. A method for controlling airbag pressure using the single-pump bidirectional medical airbag pressure control system according to any one of claims 6-8, characterized in that, When the airbag is inflated, the second two-position two-way valve and the fourth two-position two-way valve are enabled, while the first two-position two-way valve and the third two-position two-way valve are disabled. When the airbag is deflated, the second two-position two-way valve and the fourth two-position two-way valve are disabled, while the first two-position two-way valve and the third two-position two-way valve are enabled. When the airbag is pressurized, the first two-position two-way valve, the second two-position two-way valve, the third two-position two-way valve, and the fourth two-position two-way valve are all disabled.

10. A medical endoscope, characterized in that, Includes the single-pump bidirectional medical airbag pressure control system as described in any one of claims 1-4 or 6-8.

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