Pressure relief connector of oxygen flow meter and oxygen flow meter with pressure relief connector
By designing an oxygen flowmeter with a pressure relief joint, the problem that existing oxygen flowmeters cannot be used in conjunction with the second-generation wet bottles is solved, reducing the risk of wetted liquid leakage and bacterial invasion, and avoiding safety hazards caused by excessive pressure.
Patent Information
- Application Number
- CN202421625746.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-10
AI Technical Summary
The existing oxygen flowmeter cannot be used in conjunction with the second-generation wetted bottle, and the pressure relief device installed on the second-generation wetted bottle has the risk of wetted fluid leakage and bacterial invasion, which may lead to respiratory infection in the patient; at the same time, the oxygen flow adjustment knob is easily touched and causes too high pressure, which may cause the wetted bottle to burst and cause injuries to doctors and patients.
A pressure relief joint of an oxygen flowmeter is designed. The housing with a central hole is equipped with a convex ring and an annular groove. The annular groove is equipped with a pressure relief ring that exhausts the gas exceeding the set pressure. Combined with a pressure relief ring protective sleeve to ensure effective pressure relief at high pressure and prevent moisture liquid leakage and excessive pressure.
The oxygen flowmeter is compatible with the first and second generation wetted bottles, reducing the risk of wetted fluid leakage and bacterial invasion, and avoiding safety hazards such as dyspnea in patients caused by excessive pressure and bursting of wetted bottles.
Smart Images
Figure CN222841358U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a pressure relief joint of an oxygen flow meter used for people to breathe oxygen, and an oxygen flow meter with the pressure relief joint. Background Art
[0002] Currently, most second-generation medical oxygen supply equipment uses wall-mounted centralized oxygen supply. The structures of the second-generation oxygen flowmeters and second-generation humidifier bottles that accompany them have also undergone significant changes: Instead of a pressure relief device, the second-generation oxygen flowmeter is equipped with a pressure relief device on the second-generation humidifier bottle. The second-generation oxygen flowmeter and the second-generation humidifier bottle are connected using a quick-release connector, while the first-generation oxygen flowmeter and the first-generation humidifier bottle are connected using a threaded connector. These shortcomings include: first, the first-generation oxygen flowmeter cannot be used with the second-generation humidifier bottle; second, although the pressure relief device on the second-generation humidifier bottle is sealed, there is still a risk of humidifier fluid leakage and bacterial intrusion during storage and transportation, which could cause respiratory infections in patients; third, some second-generation oxygen flowmeters and second-generation humidifier bottles do not have a pressure relief device. If someone accidentally touches the oxygen flow adjustment knob and increases the oxygen flow, or bends the nasal oxygen cannula, the internal pressure of the humidifier bottle can be excessively high, causing the patient to experience breathing difficulties or even cause the humidifier bottle to burst, resulting in injuries to medical staff and patients. Summary of the Invention
[0003] The purpose of the utility model is to provide a pressure relief joint of an oxygen flow meter which is safe and reliable to use and can be used in conjunction with first-generation oxygen humidification bottles and second-generation oxygen humidification bottles, and an oxygen flow meter with the pressure relief joint.
[0004] The purpose of this utility model is to solve:
[0005] An oxygen flow meter pressure relief joint comprises a shell with a central hole, one end of which is a first connection portion connectable to the oxygen flow meter, and the other end of which is a second connection portion connectable to the humidifier bottle. Raised rings are provided on the outer surface of the middle portion of the shell to form an annular groove between the two raised rings. The bottom wall of the annular groove is provided with one or more first through holes communicating with the central hole. A pressure relief ring covering the first through hole is mounted on the annular groove and is used to discharge air from the first through hole when the set pressure is exceeded.
[0006] The outer surface of the pressure relief ring between the two convex rings is covered with a pressure relief ring protective sleeve, and the side wall of the pressure relief ring protective sleeve is provided with a second through hole corresponding to the first through hole. One end of the pressure relief ring protective sleeve is connected to one of the convex rings, and the other end is clamped to the annular groove on the inner side of the other convex ring through an elastic clamping ring to position the pressure relief ring protective sleeve.
[0007] The pressure relief ring and the pressure relief ring protective sleeve are clearance-fitted, so that when the oxygen pressure exceeds the design value, the first through hole is opened and the air and pressure are released through the clearance and the second through hole.
[0008] The pressure relief ring is made of latex material or silicone material, which has good elasticity, long service life and good safety.
[0009] The pressure relief ring protective sleeve is made of plastic material or metal material. The pressure relief ring protective sleeve made of plastic material or metal material has a certain hardness and is slightly deformed after being compressed, which can limit the pressure relief ring from expanding under pressure.
[0010] The second connecting portion of the shell is provided with an external thread.
[0011] The external thread of the second connecting part of the shell is connected with a quick-release joint.
[0012] The second connecting portion is provided with an external thread, which is convenient for connection with a humidification bottle with an internal thread. A quick-release connector can also be installed to connect with the internal thread of the humidification bottle mouth through the quick-release connector.
[0013] An oxygen flow meter with a pressure relief joint for an oxygen flow meter, wherein a transparent oxygen flow display cover is provided on the upper part of the oxygen flow meter body, the pressure relief joint for the oxygen flow meter is connected to the lower part, an oxygen connection joint that can be connected to a wall-type oxygen supply joint is provided on one side, and an oxygen flow adjustment knob is provided on the other side.
[0014] The connection between the lower part of the oxygen flow meter and the pressure relief joint of the oxygen flow meter is through a threaded connection.
[0015] The connection between the lower part of the oxygen flow meter and the pressure relief joint of the oxygen flow meter is integrally formed.
[0016] The outstanding advantages of the utility model compared with the prior art are:
[0017] 1. Since the first-generation oxygen flowmeter cannot be used with the second-generation humidification bottle, the first-generation oxygen flowmeter becomes waste. The utility model has a pressure relief joint that can be detachably connected to the first and second-generation oxygen flowmeters, so that the first-generation oxygen flowmeter can still be used with the second-generation humidification bottle, realizing the reuse of the discarded first-generation oxygen flowmeter.
[0018] 2. The utility model provides a pressure relief joint on the oxygen flow meter to ensure that the second-generation humidification bottle will not have the risk of respiratory infection and other diseases caused by humidification liquid leakage and bacterial invasion during storage and transportation.
[0019] 3. The pressure relief joint of the utility model is integrally formed with the second-generation oxygen flow meter, which can simplify the structure and reduce production costs.
[0020] 4. The utility model is provided with a pressure relief joint to prevent someone from accidentally touching the oxygen flow adjustment knob and increasing the oxygen flow or blocking the oxygen tube when the nasal oxygen tube is bent, which may cause the patient to have instant breathing difficulties due to excessive pressure, or even humidification bottle bursting, causing injuries to medical staff and patients.
[0021] 5. The pressure relief joint of the utility model uses a pressure relief ring made of latex material or silicone material and a pressure relief ring protective sleeve in the outer gap of the pressure relief ring, which can protect the pressure relief ring from excessive expansion due to high pressure, and can smoothly relieve pressure and exhaust, thereby extending the service life of the pressure relief ring. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a cross-sectional schematic diagram of one of the pressure relief joint structures of the present utility model.
[0023] Figure 2 It is a partial cross-sectional view of the pressure relief joint of the utility model integrally formed on the oxygen flow meter.
[0024] Figure 3 It is a three-dimensional sectional view of the utility model in which the pressure relief joint is integrally formed on the oxygen flow meter. DETAILED DESCRIPTION
[0025] The present invention will be further described below with reference to the accompanying drawings. Figure 1-Figure 3 :
[0026] The pressure relief joint 17 of the oxygen flow meter 30 has a housing with a central hole 10, one end of which is a first connection part 16 that can be connected to the oxygen flow meter 30, and the other end is a second connection part 20 that can be connected to the humidification bottle. The central outer surface of the housing is provided with convex rings 11 and 15 spaced apart to form an annular groove between the two convex rings 11 and 15. The bottom wall of the annular groove is provided with one or more first through holes 12 connected to the central hole 10. The annular groove is provided with a pressure relief ring 18 covering the first through hole 12, which is used to exhaust gas from the first through hole 12 when the set pressure is exceeded.
[0027] The outer surface of the pressure relief ring 18 between the two convex rings 11 and 15 is covered with a pressure relief ring protective sleeve 14, and the side wall of the pressure relief ring protective sleeve 14 is provided with a second through hole 13 corresponding to the first through hole 12. One end of the pressure relief ring protective sleeve 14 is connected to one of the convex rings, and the other end is clamped to the annular groove on the inner side of the other convex ring through an elastic clamping ring 19 to position the pressure relief ring protective sleeve 14.
[0028] The pressure relief ring 18 and the pressure relief ring protection sleeve 14 are clearance-fitted.
[0029] The pressure relief ring 18 is made of latex material or silicone material.
[0030] The pressure relief ring protection sleeve 14 is made of plastic material or metal material.
[0031] The second connecting portion 20 of the housing is provided with an external thread.
[0032] The external thread of the second connecting portion 20 of the housing is connected to a quick-release connector 21 .
[0033] An oxygen flow meter 30 with a pressure relief connector 17 for the oxygen flow meter 30 has a transparent oxygen flow display cover 31 on the upper portion of the oxygen flow meter 30 body, the pressure relief connector 17 of the oxygen flow meter 30 is connected to the lower portion, an oxygen connection connector 33 is provided on one side for connecting to a wall-mounted oxygen supply connector, and an oxygen flow adjustment knob 32 is provided on the other side.
[0034] The connection between the lower portion of the oxygen flow meter 30 and the pressure relief joint 17 of the oxygen flow meter 30 is through a threaded connection.
[0035] The connection between the lower portion of the oxygen flow meter 30 and the pressure relief joint 17 of the oxygen flow meter 30 is integrally formed.
[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still make simple replacements or modifications of similar technologies to the technical solutions or technical features described in the aforementioned embodiments, and these simple replacements or modifications do not deviate the essence of the corresponding technical solutions from the spirit and essence of the technical solutions of the various embodiments of the present invention, and they are still within the scope of protection of the present invention.
Claims
1. The pressure relief joint of the oxygen flow meter is characterized by: One end of the shell with a central hole is a first connection part that can be connected to the oxygen flow meter, and the other end is a second connection part that can be connected to the humidification bottle. The middle outer surface of the shell is provided with convex rings to form an annular groove between the two convex rings. The bottom wall of the annular groove is provided with one or more first through holes connected to the central hole. The annular groove is provided with a pressure relief ring covering the first through hole, which is used to exhaust air from the first through hole when the set pressure is exceeded.
2. The pressure relief joint of the oxygen flow meter according to claim 1, characterized in that: A pressure relief ring protective sleeve is sleeved on the outer surface of the pressure relief ring between the two convex rings, and second through holes corresponding to the first through holes are arranged on the side wall of the pressure relief ring protective sleeve. One end of the pressure relief ring protective sleeve is connected to one of the convex rings, and the other end is clamped to the annular groove on the inner side of the other convex ring through an elastic clamping ring to position the pressure relief ring protective sleeve.
3. The pressure relief joint of the oxygen flow meter according to claim 2, characterized in that: The pressure relief ring and the pressure relief ring protection sleeve are clearance-matched.
4. The pressure relief joint of the oxygen flow meter according to claim 1, characterized in that: The pressure relief ring is made of latex material or silicone material.
5. The pressure relief joint of the oxygen flow meter according to claim 2, characterized in that: The pressure relief ring protection sleeve is made of plastic material or metal material.
6. The pressure relief joint of the oxygen flow meter according to claim 1, characterized in that: The second connecting portion of the shell is provided with an external thread.
7. The pressure relief joint of the oxygen flow meter according to claim 6, characterized in that: The external thread of the second connecting part of the shell is connected with a quick-release joint.
8. An oxygen flow meter with a pressure relief joint for the oxygen flow meter, characterized in that: The upper part of the oxygen flow meter body is provided with a transparent oxygen flow display cover, the lower part is connected to the pressure relief joint of the oxygen flow meter according to any one of claims 1 to 7, one side is provided with an oxygen connection joint that can be connected to the wall oxygen supply joint, and the other side is provided with an oxygen flow adjustment knob.
9. An oxygen flow meter with a pressure relief joint for an oxygen flow meter according to claim 8, characterized in that: The connection between the lower part of the oxygen flow meter and the pressure relief joint of the oxygen flow meter is through a threaded connection.
10. An oxygen flow meter with a pressure relief joint for an oxygen flow meter according to claim 8, characterized in that: The connection between the lower part of the oxygen flow meter and the pressure relief joint of the oxygen flow meter is integrally formed.