Anaesthesia machine pressure relief structure with alarm indication ring
By introducing airflow sensing and photoelectric sensing devices into the pressure relief structure of the anesthesia machine, combined with conductive strips and light-emitting diodes, a concise and clear indication of the anesthesia machine pressure alarm is achieved, solving the problem of messy pressure alarm information of existing anesthesia machines and improving the response speed in emergency situations.
Patent Information
- Application Number
- CN202422327301.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-09-24
AI Technical Summary
The existing pressure alarm scheme of anesthesia machines provides too much confusing information in emergency situations, making it difficult for anesthesiologists to quickly identify the cause of the alarm and miss the opportunity for rescue.
A pressure relief structure of an anesthesia machine with an alarm indicator ring is designed. Through the airflow sensing device and the photoelectric sensing device, the airflow sensing device is used to rotate and control the flashing of the indicator light. The color and brightness indication of different pressure ranges are achieved through the combination of conductive strips and light-emitting diodes.
It provides a concise and clear pressure warning to help anesthesiologists quickly identify pressure exceeding the limit, reduce the risk of misoperation, and improve the response speed of emergency treatment.
Smart Images
Figure CN223416540U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of anesthesia machines, in particular to a pressure relief structure of an anesthesia machine with an alarm indicating ring. Background Art
[0002] The adjustable pressure-limiting valve of the anesthesia machine is a key component of the anesthesia machine. By rotating it, it can limit the gas pressure in the breathing circuit, ensuring that the patient receives proper ventilation and oxygen supply during surgery, while limiting airway pressure and preventing lung damage.
[0003] The adjustable pressure-limiting valve has a pressure adjustment range of 0 to 70 cmH2O, but in most cases, it is generally not used above 30 cmH2O. During anesthesia, a series of airway operations, such as intubation, suctioning, extubation, single-lung ventilation, and lung inflation, require frequent switching of ventilation modes and adjustment of the APL valve. Existing anesthesia machine solutions for pressure alarms generally display the pressure value on the machine's display and sound an alarm when the pressure limit is exceeded. However, in some emergency situations, the information displayed on the same screen is too cluttered, making it difficult to distinguish the cause of the alarm, thus missing the opportunity for rescue. Utility Model Content
[0004] The purpose of the present invention is to address the defects of the prior art and provide an anesthesia machine pressure relief structure with an alarm indicator ring, so that anesthesiologists can accurately obtain warnings and reminders.
[0005] In order to solve the above technical problems, the utility model provides an anesthesia machine pressure relief structure with an alarm indicator ring, including a pressure regulating device and a pressure relief pipe, the pressure regulating device including a shell, an inlet and an outlet being provided on the shell, the inlet being used to be connected to the oxygen supply pipe of the anesthesia machine, and the outlet being connected to the pressure relief pipe, the pressure regulating device including an adjustable pressure limiting valve and an indicator light, the adjustable pressure limiting valve being used to adjust the pressure at which oxygen in the oxygen supply pipe can enter the pressure relief pipe, an airflow sensing device and a photoelectric sensing device being arranged in the pressure relief pipe, the photoelectric sensing device including a transmitting part and a receiving part, the receiving part and the indicator light being connected in series and connected to the power supply of the anesthesia machine, the receiving part being used to convert an optical signal into an electrical signal, the airflow sensing device being arranged between the transmitting part and the receiving part, the airflow sensing device being rotatably connected to the pressure relief pipe, the airflow being able to drive the airflow sensing device to rotate, so that the receiving part receives the light signal emitted by the transmitting part at intervals, thereby realizing the flashing of the indicator light.
[0006] Furthermore, the receiving part includes a photodiode, and the transmitting part includes a light-emitting body.
[0007] Furthermore, the airflow sensing device includes a rotating shaft and blades, both ends of the rotating shaft are rotatably connected to the inner wall of the pressure relief pipe, the blades are fixedly arranged on the rotating shaft, and the blades rotate with the rotating shaft to periodically block the light signal emitted by the receiving part.
[0008] Furthermore, the adjustable pressure-limiting valve includes a knob, which is threadedly connected to the shell, one end of the knob extends into the shell and is provided with a spring, one end of the spring is connected to the knob, and the other end of the spring is provided with a closing disk, which closes the inlet under the action of the spring.
[0009] Furthermore, a connecting plate is rotatably provided on one end of the knob extending into the housing, and the spring is connected to the knob via the connecting plate.
[0010] Furthermore, a limiting cylinder is provided in the shell, and the limiting cylinder is coaxially sleeved on the knob. An annular scale is provided outside the shell. When the knob is rotated to 0 cmH2O, the bottom of the limiting cylinder abuts against the connecting plate.
[0011] Furthermore, the knob includes a knob head and a knob rod, the diameter of the knob head is larger than the diameter of the knob rod, the knob rod is threadedly connected to the shell, and the knob head is located outside the shell. When the knob is rotated to 70cmH2O, the bottom surface of the knob head abuts against the outer surface of the shell.
[0012] Furthermore, multiple sections of conductive strips are provided on the inner wall of the limiting cylinder, and the multiple sections of the conductive strips are arranged in a spiral structure at different heights of the limiting cylinder. The indicator light includes multiple parallel light-emitting diodes, and each light-emitting diode has a different light-emitting color. The multiple light-emitting diodes are connected one-to-one with the multiple conductive strips. The part of the knob extending into the shell is provided with multiple contact pieces, and the multiple contact pieces are corresponding one-to-one with the multiple conductive strips, so that during the rotation of the knob, only one contact piece is connected to its corresponding conductive strip.
[0013] Furthermore, the conductive strip is a resistance strip, so that when the knob is rotated, the indicator light emits different intensities depending on the connection position between the contact piece and the conductive strip.
[0014] Furthermore, the plurality of light emitting diodes are coaxially arranged in a ring shape on the housing.
[0015] The beneficial effects of the utility model are:
[0016] 1. The utility model is provided with an airflow sensing device and a photoelectric sensing device. When the pressure in the oxygen supply pipe of the anesthesia machine is greater than the pressure limit set by the pressure regulating device, oxygen flows into the pressure relief pipe, pushing the airflow sensing device to rotate, so that the receiving part receives the light signal emitted by the transmitting part at intervals, so that the circuit of the indicator light is periodically energized, and the indicator light flashes. When the deflation becomes faster, the flashing also speeds up, thereby warning and reminding the anesthesiologist: the oxygen pressure exceeds the pressure limit and is deflation.
[0017] 2. The utility model sets multiple conductive strips in the limit cylinder, and the indicator light includes multiple light-emitting diodes, so that when the pressure regulating device sets different pressure limits, the indicator light emits different colors, so that the anesthesiologist can judge within which range the current pressure limit set by the pressure regulating device is based on the color.
[0018] 3. The conductive strip of the present invention is a resistor strip, and the other contact pieces together form a sliding rheostat, so that when the knob is turned to different positions, the light intensity of the indicator light is different. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural diagram of the utility model;
[0020] Figure 2 It is a cross-sectional view of the utility model;
[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0022] Figure 4 This is a top view of the limiting cylinder of the utility model;
[0023] Figure 5 for Figure 2 Enlarged view of point B in the middle;
[0024] Figure 6 This is a circuit connection diagram of the receiving part, conductive strip, and indicator light of the utility model.
[0025] Figure numerals: housing 1; adjustable pressure-limiting valve 2; knob 21; spring 22; closing disk 23; connecting plate 24; contact piece 25; limiting bolt 26; indicator light 3; light-emitting diode 31; annular scale 4; transmitting part 5; receiving part 6; rotating shaft 7; blade 8; limiting cylinder 9; conductive strip 91; pressure relief pipe 10; oxygen supply pipe 11. DETAILED DESCRIPTION
[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.
[0027] like Figure 1 As shown, this embodiment provides an anesthesia machine pressure relief structure with an alarm indicator ring, including a pressure regulating device and a pressure relief pipe 10, the pressure regulating device includes a shell 1, an inlet and an outlet are provided on the shell 1, the inlet is used to connect to the oxygen supply pipe 11 of the anesthesia machine, and the outlet is connected to the pressure relief pipe 10, the pressure regulating device includes an adjustable pressure limiting valve 2 and an indicator light 3, the adjustable pressure limiting valve 2 is used to adjust the pressure of oxygen in the oxygen supply pipe 11 to allow it to enter the pressure relief pipe 10, an airflow sensing device and a photoelectric sensing device are provided in the pressure relief pipe 10, the photoelectric sensing device includes a transmitter 5 and a receiver 6, the receiver 6 and the indicator light 3 are connected in series and connected to the power supply of the anesthesia machine, the receiver 6 is used to convert the optical signal into an electrical signal, the airflow sensing device is arranged between the transmitter 5 and the receiver 6, the airflow sensing device is rotatably connected to the pressure relief pipe 10, the airflow can drive the airflow sensing device to rotate, so that the receiver 6 periodically receives the light signal emitted by the transmitter 5, thereby realizing the flashing of the indicator light 3.
[0028] It can be understood that when the pressure in the oxygen supply pipe 11 of the anesthesia machine is greater than the pressure limit set by the pressure regulating device, the oxygen flow enters the pressure relief pipe 10, pushing the airflow sensing device to rotate, so that the receiving part 6 periodically receives the light signal emitted by the transmitting part 5, so that the circuit of the indicator light 3 is periodically energized, and the indicator light 3 flashes, and when the deflation becomes faster, the flashing also speeds up, thereby warning and reminding the anesthesiologist that the oxygen pressure exceeds the pressure limit and is deflation.
[0029] In some embodiments, as Figure 5 As shown, the receiving unit 6 includes a photodiode, and the transmitting unit 5 includes a light-emitting diode, which can be a light-emitting diode 31. When the airflow sensing device blocks the transmitting unit 5, the receiving unit 6 cannot receive the light signal, and the circuit is disconnected, and the indicator light 3 is turned off. When the airflow sensing device rotates and no longer blocks the transmitting unit 5, the receiving unit 6 receives the light signal, the circuit is connected, and the indicator light 3 lights up, thereby achieving the flashing of the indicator light 3.
[0030] In some embodiments, as Figure 5 As shown, the airflow sensing device includes a rotating shaft 7 and a blade 8. The two ends of the rotating shaft 7 are rotatably connected to the inner wall of the pressure relief pipe 10. The blade 8 is fixed to the rotating shaft 7 and rotates with the rotating shaft 7 to periodically block the light signal emitted by the receiving unit 6. The blade 8 temporarily blocks the light signal emitted by the transmitting unit 5, and the pushing pressure required by the blade 8 is relatively low, so that the indicator light 3 can flash even when the airflow pressure is low.
[0031] In some embodiments, as Figure 2As shown, the adjustable pressure-limiting valve 2 includes a knob 21, which is threadedly connected to the housing 1. One end of the knob 21 extends into the housing 1 and is provided with a spring 22. One end of the spring 22 is connected to the knob 21, and the other end of the spring 22 is provided with a closing disk 23. The closing disk 23 closes the inlet under the action of the spring 22. Figure 2 The figure shows the state where the closing disk 23 is lifted by the air flow. By turning the knob 21, the elastic force of the spring 22 can be adjusted to control the pressure required for oxygen to enter the pressure relief pipe 10.
[0032] In some embodiments, as Figure 3 As shown, one end of the knob 21 extending into the housing 1 is rotatably provided with a connecting plate 24. A through-hole is defined in the center of the connecting plate 24, through which the lower end of the knob 21 passes. A stop bolt 26 is provided. The stop bolt 26 is threadedly connected to the lower end of the knob 21 and serves to limit the axial movement of the connecting plate 24 along the knob 21. One end of the spring 22 is fixed to the connecting plate 24. When the knob 21 is rotated, the connecting plate 24 does not rotate with the knob 21.
[0033] In some embodiments, as Figure 3 As shown, a limiting cylinder 9 is provided in the shell 1, and the limiting cylinder 9 is coaxially sleeved on the knob 21. The upper end of the limiting cylinder 9 is fixed on the inner wall of the shell 1, and an annular scale 4 is provided outside the shell 1. When the knob 21 is rotated to 0cmH2O, the bottom of the limiting cylinder 9 abuts against the connecting plate 24.
[0034] In some embodiments, as Figure 3 As shown, the knob 21 includes a knob 21 head and a knob 21 rod. The diameter of the knob 21 head is larger than the diameter of the knob 21 rod. The knob 21 rod is threadedly connected to the shell 1. The knob 21 head is located outside the shell 1. When the knob 21 is rotated to 70cmH2O, the bottom surface of the knob 21 head abuts against the outer surface of the shell 1.
[0035] In some embodiments, as Figure 3 、 4 As shown, three conductive strips 91 are provided on the inner wall of the limit cylinder 9. The three conductive strips 91 are spirally arranged at different heights around the inner wall of the limit cylinder 9. The indicator light 3 includes three parallel light-emitting diodes 31. The three light-emitting diodes 31 are coaxially arranged in an annular shape on the housing 1. Each light-emitting diode 31 emits a different color (for example, red, yellow, and green). The three light-emitting diodes 31 are connected to the three conductive strips 91 in a one-to-one correspondence. The portion of the knob 21 extending into the housing 1 is provided with three contact pieces 25. The three contact pieces 25 are in a one-to-one correspondence with the three conductive strips 91. During the rotation of the knob 21, only one contact piece 25 is connected to its corresponding conductive strip 91. Figure 6 As shown, when a contact piece 25 is connected to its corresponding conductive strip 91 (equivalent to Figure 6The switch on one of the three lines is closed), the line corresponding to the conductive strip 91 is connected, so that the indicator light 3 emits the color of the light-emitting diode 31 on the line corresponding to the conductive strip 91.
[0036] It should be noted that at the beginning of use, if the indicator light 3 does not light up after rotating the knob 21, it means that the blades 8 are just blocking the emission part 5. In this case, the knob 21 can be adjusted to reduce the pressure required for the gas to enter the pressure relief pipe 10. After the gas blows the blades 8, the knob 21 can be adjusted again. The number of blades 8 should be reduced as much as possible to avoid the probability of the above phenomenon.
[0037] It can be understood that when the knob 21 is rotated, the contact piece 25 on the knob 21 will make a spiral motion. Since the conductive strips 91 are arranged in a spiral, during the rotation of the knob 21, there is always a contact piece 25 connected to its corresponding conductive strip 91, and the three conductive strips 91 can be respectively corresponded to the light-emitting diodes 31 that emit red, yellow and green light. That is, when the knob 21 is rotated within the range of 1cmH2O to 29cmH2O, the indicator light 3 is displayed in green; when the knob 21 is rotated within the range of 30cmH2O to 49cmH2O, the indicator light 3 is displayed in yellow; when the knob 21 is rotated within the range of 50cmH2O to 70cmH2O, the indicator light 3 is displayed in red.
[0038] In some embodiments, the conductive strip 91 is a resistor strip, so that when the knob 21 rotates, the indicator light 3 emits different intensities depending on the connection position between the contact piece 25 and the conductive strip 91, which is the same as the principle of a sliding rheostat.
[0039] The method of using the anesthesia machine pressure relief structure with an alarm indicator ring is as follows:
[0040] When the anesthesia machine is switched to manual mode during surgery, if the patient's airway pressure needs to be limited to 30cmH2O for assisted ventilation, the knob 21 is rotated to 30cmH2O, and the corresponding indicator light 3 is displayed in yellow. When assisted ventilation is provided to the patient, if the pressure of the oxygen supply pipe 11 exceeds 30cmH2O, the gas enters the pressure relief pipe 10, the blade 8 rotates, and the receiving part 6 receives the light signal at intervals, so that the circuit is switched on and off at intervals. At this time, the yellow light flashes. When the gas deflation speed increases, the flashing speed also increases, thereby warning and reminding the anesthesiologist: the pressure of the oxygen supply pipe 11 exceeds the pressure limit and is deflation.
[0041] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.
Claims
1. A pressure relief structure of an anesthesia machine with an alarm indicator ring, characterized by: The invention comprises a pressure regulating device and a pressure relief pipe (10), wherein the pressure regulating device comprises a housing (1), an inlet and an outlet are provided on the housing (1), the inlet is used to be connected to the oxygen supply pipe (11) of the anesthesia machine, and the outlet is connected to the pressure relief pipe (10), the pressure regulating device comprises an adjustable pressure limiting valve (2) and an indicator light (3), the adjustable pressure limiting valve (2) is used to regulate the pressure of oxygen in the oxygen supply pipe (11) that can enter the pressure relief pipe (10), and the pressure relief pipe (10) is provided with an air flow sensing device and a photoelectric sensor. The photoelectric sensing device comprises a transmitting part (5) and a receiving part (6), the receiving part (6) and the indicator light (3) are connected in series and connected to the power supply of the anesthesia machine, the receiving part (6) is used to convert the optical signal into an electrical signal, the airflow sensing device is arranged between the transmitting part (5) and the receiving part (6), the airflow sensing device is rotatably connected to the pressure relief pipe (10), and the airflow can drive the airflow sensing device to rotate, so that the receiving part (6) receives the optical signal emitted by the transmitting part (5) at intervals, thereby realizing the flashing of the indicator light (3).
2. The pressure relief structure of an anesthesia machine with an alarm indicator ring according to claim 1, characterized in that: The receiving part (6) includes a photosensitive diode, and the transmitting part (5) includes a light-emitting body.
3. The pressure relief structure of an anesthesia machine with an alarm indicator ring according to claim 1, characterized in that: The airflow sensing device comprises a rotating shaft (7) and a blade (8), wherein both ends of the rotating shaft (7) are rotatably connected to the inner wall of the pressure relief pipe (10), and the blade (8) is fixedly arranged on the rotating shaft (7). The blade (8) rotates with the rotating shaft (7) and is used to periodically block the light signal emitted by the receiving part (6).
4. The anesthesia machine pressure relief structure with an alarm indicator ring according to any one of claims 1 to 3, characterized in that: The adjustable pressure-limiting valve (2) comprises a knob (21), the knob (21) being threadedly connected to the housing (1), one end of the knob (21) extending into the housing (1) and provided with a spring (22), one end of the spring (22) being connected to the knob (21), and the other end of the spring (22) being provided with a closing disk (23), and the closing disk (23) closing the inlet under the action of the spring (22).
5. The pressure relief structure of an anesthesia machine with an alarm indicator ring according to claim 4, characterized in that: One end of the knob (21) extending into the housing (1) is rotatably provided with a connecting plate (24), and the spring (22) is connected to the knob (21) via the connecting plate (24).
6. The pressure relief structure of an anesthesia machine with an alarm indicator ring according to claim 5, characterized in that: A limiting cylinder (9) is provided inside the housing (1), and the limiting cylinder (9) is coaxially sleeved on the knob (21). An annular scale (4) is provided outside the housing (1). When the knob (21) is rotated to (0) cmH2O, the bottom of the limiting cylinder (9) abuts against the connecting plate (24).
7. The pressure relief structure of an anesthesia machine with an alarm indicator ring according to claim 6, characterized in that: The knob (21) comprises a knob (21) head and a knob (21) rod. The diameter of the knob (21) head is larger than the diameter of the knob (21) rod. The knob (21) rod is threadedly connected to the housing (1). The knob (21) head is located outside the housing (1). When the knob (21) is rotated to 70 cmH2O, the bottom surface of the knob (21) head abuts against the outer surface of the housing (1).
8. The pressure relief structure of an anesthesia machine with an alarm indicator ring according to claim 6, characterized in that: A plurality of sections of conductive strips (91) are provided on the inner wall of the limiting cylinder (9), and the plurality of sections of the conductive strips (91) are arranged in a spiral structure at different heights of the limiting cylinder (9). The indicator light (3) includes a plurality of light-emitting diodes (31) connected in parallel, and each light-emitting diode (31) has a different luminous color. The plurality of light-emitting diodes (31) are connected to the plurality of conductive strips (91) in a one-to-one correspondence. The portion of the knob (21) extending into the housing (1) is provided with a plurality of contact pieces (25), and the plurality of contact pieces (25) are in one-to-one correspondence with the plurality of conductive strips (91), so that during the rotation of the knob (21), only one contact piece (25) is connected to its corresponding conductive strip (91).
9. The pressure relief structure of an anesthesia machine with an alarm indicator ring according to claim 8, characterized in that: The conductive strip (91) is a resistance strip, so that during the rotation of the knob (21), the indicator light (3) emits light of different intensities depending on the connection position between the contact piece (25) and the conductive strip (91).
10. The pressure relief structure of an anesthesia machine with an alarm indicator ring according to claim 8, characterized in that: A plurality of light emitting diodes (31) are coaxially arranged in a ring shape on the housing (1).