Negative pressure suction and local hyperbaric oxygen therapy combined device
By integrating a negative pressure suction machine and an oxygen generator into the first aid kit, and combining negative pressure suction with hyperbaric oxygen therapy, the emergency treatment needs of marine workers suffering from seawater immersion wounds have been addressed, improving the cure rate and healing speed, and meeting the emergency treatment needs of marine workers.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE NAVAL MEDICAL UNIV OF PLA
- Filing Date
- 2025-04-21
- Publication Date
- 2026-04-21
AI Technical Summary
Existing technologies for treating seawater immersion wounds in marine workers suffer from limitations such as negative pressure wound therapy (NPWT) which promotes anaerobic bacterial growth and limited oxygen flow in local oxygen therapy (TOT), failing to meet emergency needs and requiring lengthy assessment times.
A device combining negative pressure suction and local hyperbaric oxygen therapy is designed, integrating a negative pressure suction machine and an oxygen generator in a first aid kit. The device removes wound exudate through negative pressure suction and inhibits the growth of anaerobic bacteria and promotes healing through hyperbaric oxygen therapy. The device is portable and meets emergency needs.
It significantly improves the healing rate of wounds treated with seawater immersion, shortens the healing time, enhances the portability and emergency response efficiency of treatment, and ensures the safety and comfort of treatment.
Smart Images

Figure CN224141128U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical technology, and more specifically, it relates to a negative pressure suction combined with local hyperbaric oxygen therapy device. Background Technology
[0002] Marine workers, encompassing professions such as maritime rescue and marine engineering, are highly susceptible to various injuries and illnesses due to the harsh and unique working environment. Wounds are particularly challenging, as seawater possesses extremely complex physicochemical properties, exhibiting characteristics such as low temperature, high salinity, hypertonicity, alkalinity, and a high abundance of pathogenic microorganisms. Once an injury occurs and is immersed in seawater, marine microorganisms can rapidly attach to and invade the wound, causing infection. Current technologies for treating such injuries and illnesses utilize negative pressure wound therapy (NPWT) or topical oxygen therapy. Treatment is performed using OxygenTherapy (TOT), with NPWT primarily achieved through negative pressure wound therapy. This technique is widely used because it effectively drains blood, removes bacterial biofilms, controls infection, promotes wound vascularization and tissue proliferation, improves cure rates, and shortens healing time. When the TOT device is running, it delivers a certain flow of oxygen to the wound, significantly increasing the oxygen content in the wound environment. This alters the hypoxic environment that anaerobic bacteria thrive in, effectively improving the hypoxia in deep tissues of the wound and promoting aerobic metabolism in cells, thus inhibiting anaerobic bacterial infection.
[0003] When NPWT (Negative Pressure Wound Therapy) is used to treat seawater-immersed wounds, its limitations are obvious. First, the low-oxygen environment created by NPWT in the wound area actually promotes the growth and reproduction of anaerobic bacteria, which aggravates wound infection and seriously hinders the normal healing process. Second, due to the special working environment, marine workers often have difficulty being quickly transferred to hospitals for professional treatment after injury, which not only delays treatment but also increases the risk of wound deterioration. Furthermore, the oxygen flow of TOT equipment is limited and mainly acts on superficial tissues of the wound, which is not effective for deep seawater-immersed wounds and associated anaerobic bacterial infections. In addition, assessing the therapeutic effect of NPWT on such wounds usually requires 1-2 weeks, which is obviously impractical for patients in urgent need of treatment and cannot meet the needs of emergency care.
[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a negative pressure suction combined with local hyperbaric oxygen therapy device, in order to achieve a more practical purpose. Utility Model Content
[0005] To address the aforementioned technical problems, this invention provides a negative pressure suction combined with local hyperbaric oxygen therapy device to solve current medical issues.
[0006] The purpose and efficacy of this utility model's negative pressure suction combined with local hyperbaric oxygen therapy device are achieved through the following specific technical means:
[0007] A negative pressure suction combined with local hyperbaric oxygen therapy device includes a rescue box. A partition is fixedly connected inside the rescue box, and the partition divides the interior of the rescue box. A rescue component for treating limbs is arranged inside the rescue box below the partition. The rescue component includes a negative pressure suction machine body and an oxygen generator body fixedly connected to the bottom of the rescue box. A second collection frame is fixedly connected to the top of the partition, and a limb compartment for wrapping the limb is placed inside the second collection frame.
[0008] Furthermore, the main body of the negative pressure suction machine is fixedly connected to the inner bottom of the rescue box. The inner bottom of the rescue box is symmetrically fixedly connected to a limiting frame on one side of the main body of the negative pressure suction machine. A liquid storage tank is internally limited and locked in the limiting frame. A second main air pipe is fixedly connected to the suction end of the main body of the negative pressure suction machine. A first main air pipe is fixedly connected to the inlet end of the liquid storage tank. A pressure measuring tube is installed on the outer wall of the first main air pipe. A negative pressure gauge that can detect the internal pressure of the liquid storage tank is fixedly connected to the end of the pressure measuring tube.
[0009] Furthermore, the oxygen generator body is fixedly connected to the inner bottom of the ambulance box and located on one side of the negative pressure suction machine body. The oxygen discharge end of the oxygen generator body is fixedly connected to a third main air pipe. The outer wall of the third main air pipe is respectively equipped with an electric control valve body and a pressure sensor, and the electric control valve body and the pressure sensor are arranged in an upper and lower structure.
[0010] Furthermore, threaded connectors are fixedly connected to the ends of the first main air pipe and the third main air pipe, and a first collection frame is fixedly connected to the top of the partition. An auxiliary air pipe for limiting connection with the first main air pipe and the third main air pipe is placed inside the first collection frame.
[0011] Furthermore, the outer wall of the limb compartment is fixedly connected with an upper connector and a lower connector, which are distributed vertically. The upper connector is limited by an auxiliary air pipe and a threaded joint to establish an oxygen transmission channel. The lower connector is limited by an auxiliary air pipe and a first main air pipe to establish a negative pressure transmission channel.
[0012] Furthermore, a control panel for controlling the opening and closing of the negative pressure suction machine body and the oxygen generator body is fixedly connected to the upper top of the partition located on one side of the second collection frame. The end of the limb compartment is made of rubber material and is cylindrical.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] This invention combines the second collection frame and the negative pressure suction machine body inside the first aid box, simultaneously addressing wound cleaning and oxygen deficiency. For wounds soaked in seawater and chronic wounds infected with anaerobic bacteria, it effectively removes bacteria and toxins from the seawater, as well as necrotic tissue, while providing sufficient oxygen to the wound tissue, inhibiting the growth of anaerobic bacteria, and promoting wound healing. Compared to simple NPWT or TOT technology, it significantly improves the cure rate and shortens the healing time. Furthermore, because the second collection frame and the negative pressure suction machine body are integrated inside the first aid box, it offers a degree of portability, allowing users to move it quickly during use. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of a negative pressure suction combined with local hyperbaric oxygen therapy device according to the present invention.
[0016] Figure 2 This is a schematic diagram showing the front section of the rescue box in a negative pressure suction combined with local hyperbaric oxygen therapy device of this utility model.
[0017] Figure 3 This is a schematic diagram showing the side section of the rescue box in a negative pressure suction combined with local hyperbaric oxygen therapy device of this utility model.
[0018] Figure 4 This is a schematic diagram of the area below the partition of the ambulance box in a negative pressure suction combined with local hyperbaric oxygen therapy device of this utility model.
[0019] Figure 5 This is a schematic diagram of the limb chamber in a negative pressure suction combined with local hyperbaric oxygen therapy device according to this utility model.
[0020] In the diagram, the correspondence between component names and drawing numbers is as follows:
[0021] 1. First Aid Box; 2. Partition; 3. Control Panel; 4. First Collection Frame; 41. Auxiliary Airway; 5. Second Collection Frame; 51. Limb Compartment; 52. Upper Connector; 53. Lower Connector; 6. Negative Pressure Suction Machine Main Body; 61. Limiting Frame; 62. Liquid Storage Tank; 63. First Main Airway; 64. Pressure Measuring Tube; 65. Negative Pressure Gauge; 66. Second Main Airway; 7. Oxygen Generator Main Body; 71. Third Main Airway; 72. Electrically Controlled Valve Main Body; 73. Air Pressure Sensor; 74. Threaded Connector. Detailed Implementation
[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0023] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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 utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0025] Example:
[0026] As attached Figure 1 To be continued Figure 5 As shown:
[0027] This invention provides a negative pressure suction combined with local hyperbaric oxygen therapy device, including a rescue box 1. A partition 2 is fixedly connected inside the rescue box 1, dividing the interior of the rescue box 1. Below the partition 2, a rescue component for limb treatment is located inside the rescue box 1. The rescue component includes a negative pressure suction machine body 6 and an oxygen generator body 7 fixedly connected to the bottom of the rescue box 1. A second collection frame 5 is fixedly connected to the top of the partition 2, and the second collection frame 5 contains a limb compartment 51 for wrapping the limb. Negative pressure suction helps to remove wound exudate. Reducing edema and promoting tissue repair and accelerating the healing process through local hyperbaric oxygen therapy, the combination of the two significantly improves the treatment effect. The interior of the rescue box 1 is reasonably divided by the partition 2, which allows the negative pressure suction and hyperbaric oxygen therapy equipment to be arranged in an orderly manner, making it convenient for medical staff to operate and manage quickly. At the same time, the centralized design of the rescue components reduces the time for equipment handling and connection, improving emergency rescue efficiency. The use of the limb chamber 51 not only helps to maintain the cleanliness and sterility of the treatment area, but also increases tissue oxygen supply through local hyperbaric oxygen therapy, reduces pain, improves the patient's treatment comfort, and promotes faster recovery.
[0028] The negative pressure suction machine body 6 is fixedly connected to the inner bottom of the rescue box 1. A limit frame 61 is symmetrically fixedly connected to the inner bottom of the rescue box 1 on one side of the negative pressure suction machine body 6. A liquid storage tank 62 is internally secured to the limit frame 61. A second main air pipe 66 is fixedly connected to the suction end of the negative pressure suction machine body 6. A first main air pipe 63 is fixedly connected to the inlet end of the liquid storage tank 62. A pressure measuring tube 64 is installed on the outer wall of the first main air pipe 63. A negative pressure gauge 65, capable of detecting the internal pressure of the liquid storage tank 62, is fixedly connected to the end of the pressure measuring tube 64. Through the pressure measuring tube 64 installed on the outer wall of the first main air pipe 63 and the negative pressure gauge 65 connected to its end, the pressure state inside the liquid storage tank 62 can be monitored in real time to ensure... The pressure during the negative pressure suction process is controlled within a safe range, effectively preventing treatment risks caused by excessively high or low pressure, and improving the safety and reliability of the treatment. The limiting bracket 61's locking design for the storage tank 62 makes the replacement and cleaning of the storage tank 62 simple and quick. Medical staff can easily remove the storage tank 62 for maintenance without complicated operations, ensuring the continuous and efficient operation and hygiene standards of the negative pressure suction system. The main body 6 of the negative pressure suction machine is connected to the storage tank 62 through the second main air pipe 66, realizing the efficient suction and collection of waste fluids such as wound exudate. The storage tank 62, as a waste fluid storage container, effectively avoids pollution caused by waste fluid overflow and maintains the cleanliness and safety of the treatment environment.
[0029] The oxygen generator body 7 is fixedly connected to the bottom of the ambulance box 1 and located on one side of the negative pressure suction machine body 6. The oxygen discharge end of the oxygen generator body 7 is fixedly connected to a third main air pipe 71. An electric control valve body 72 and a pressure sensor 73 are respectively installed on the outer wall of the third main air pipe 71. The electric control valve body 72 and the pressure sensor 73 are arranged in an upper and lower structure. Through the setting of the electric control valve body 72, the oxygen flow rate in the third main air pipe 71 can be precisely adjusted to ensure that the patient in the limb compartment 51 is provided with an appropriate concentration of oxygen therapy. The pressure sensor 73 can be a Honeywell HSCMRNN030PD2A5 (not specifically specified). The pressure sensor 73 can monitor the oxygen pressure status in the third main air pipe 71 in real time to ensure the stability and safety of the oxygen supply.
[0030] The first main trachea 63 and the third main trachea 71 are both fixedly connected to threaded connectors 74 at their ends. The top of the partition 2 is fixedly connected to a first collection frame 4. The first collection frame 4 contains an auxiliary trachea 41 for limiting connection with the first main trachea 63 and the third main trachea 71. The ends of the first main trachea 63 and the third main trachea 71 are both designed with threaded connectors 74. This design allows them to be easily connected to other tracheas or treatment devices, such as the auxiliary trachea 41, thereby realizing the flexible expansion and adaptation of the treatment system. Medical staff can quickly adjust the trachea connection scheme according to actual treatment needs, improving the flexibility and personalization of treatment.
[0031] The limb chamber 51 is fixedly connected to an upper connector 52 and a lower connector 53 on its outer wall, with the upper connector 52 and lower connector 53 arranged vertically. The upper connector 52 is connected to the threaded connector 74 via an auxiliary air tube 41, establishing an oxygen transmission channel. The lower connector 53 is connected to the first main air tube 63 via an auxiliary air tube 41, establishing a negative pressure transmission channel. The design of the upper connector 52 and lower connector 53 allows the limb chamber 51 to be connected to both the oxygen generator body 7 and the negative pressure suction machine body 6 simultaneously, establishing oxygen transmission channels and negative pressure transmission channels respectively. This ensures that patients can quickly receive negative pressure suction treatment after receiving hyperbaric oxygen therapy, improving the overall treatment effect and patient comfort.
[0032] The upper top of the partition 2, located on one side of the second collection frame 5, is fixedly connected to a control panel 3 that controls the opening and closing of the negative pressure suction machine body 6 and the oxygen generator body 7. The end of the limb chamber 51 is made of rubber material and is cylindrical. During use, the end of the limb chamber 51 can be restrained, thereby achieving a better therapeutic effect. The setting of the control panel 3 allows medical staff to easily control the opening and closing of the negative pressure suction machine body 6 and the oxygen generator body 7 without having to search for or operate scattered switches inside the first aid box 1, greatly simplifying the operation process and improving work efficiency. At the same time, the centralized control of the control panel 3 also reduces the risk of misoperation and ensures the safe operation of the treatment equipment. The end of the limb chamber 51 is made of rubber material, which has good elasticity and softness, and can closely fit the patient's limb, reducing discomfort during treatment. At the same time, the cylindrical design of the rubber material can adapt to limbs of different sizes and shapes, ensuring effective transmission of oxygen and negative pressure, while avoiding pressure and damage to the patient's limb.
[0033] The specific usage and function of this embodiment are as follows:
[0034] In this invention, the patient's limb is first encased in a limb chamber 51, designed with the patient's comfort and treatment needs in mind. Then, the negative pressure suction machine 6 and oxygen generator 7 are activated via the control panel 3. The negative pressure suction machine 6 is connected to a storage tank 62 via a second main air pipe 66, forming a negative pressure suction system. Under negative pressure, wound exudate, necrotic tissue, and any bacteria and toxins present in the seawater within the limb chamber 51 are effectively drawn into the storage tank 62, achieving wound cleaning. Simultaneously, a pressure measuring tube 64 and a negative pressure gauge 65 monitor the pressure inside the storage tank 62 in real time, ensuring the safety and stability of the negative pressure suction process. Qualitatively, on the other hand, the oxygen generator body 7 provides high-pressure oxygen to the limb chamber 51 through the third main air pipe 71. The oxygen enters the limb chamber 51 through the connection of the upper connector 52 and the auxiliary air pipe 41, providing a sufficient oxygen environment for the wound tissue. This hyperbaric oxygen therapy helps to inhibit the growth of anaerobic bacteria and promote the wound healing process. The electric control valve body 72 and the air pressure sensor 73 are responsible for precisely adjusting and controlling the flow and pressure of oxygen to ensure the effectiveness and safety of the treatment process. By integrating key components such as the second collection frame 5 and the negative pressure suction machine body 6 inside the rescue box 1, this device not only achieves a compact layout of the treatment equipment, but also gives the device good portability.
[0035] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.
Claims
1. A negative pressure wound therapy combined with hyperbaric oxygen therapy device comprising an ambulance case (1), characterized in that: The inside of the first aid box (1) is fixedly connected to a partition (2), and the inside of the first aid box (1) is divided by the partition (2). The inside of the first aid box (1) is located below the partition (2) and is equipped with a first aid component for treating limbs. The first aid component includes a negative pressure suction machine body (6) and an oxygen generator body (7) fixedly connected to the bottom of the first aid box (1). The top of the partition (2) is fixedly connected to a second collection frame (5), and the inside of the second collection frame (5) is a limb compartment (51) for wrapping the limb.
2. The device of claim 1, wherein: The main body (6) of the negative pressure suction machine is fixedly connected to the inner bottom of the rescue box (1). The inner bottom of the rescue box (1) is symmetrically fixedly connected to a limiting frame (61) on one side of the main body (6). The limiting frame (61) is internally limited and locked with a liquid storage tank (62). The suction end of the negative pressure suction machine (6) is fixedly connected to a second main air pipe (66). The inlet end of the liquid storage tank (62) is fixedly connected to a first main air pipe (63). A pressure measuring tube (64) is installed on the outer wall of the first main air pipe (63). The end of the pressure measuring tube (64) is fixedly connected to a negative pressure gauge (65) that can detect the internal pressure of the liquid storage tank (62).
3. The device of claim 2, wherein: The oxygen generator body (7) is fixedly connected to the inner bottom of the rescue box (1) and located on one side of the negative pressure suction machine body (6). The oxygen discharge end of the oxygen generator body (7) is fixedly connected to a third main air pipe (71). The outer wall of the third main air pipe (71) is respectively equipped with an electric control valve body (72) and a pressure sensor (73), and the electric control valve body (72) and the pressure sensor (73) are arranged in an upper and lower structure.
4. The device of claim 3, wherein: The ends of the first main air pipe (63) and the third main air pipe (71) are fixedly connected with threaded joints (74). The top of the partition (2) is fixedly connected with a first collection frame (4). The first collection frame (4) contains an auxiliary air pipe (41) for limiting connection with the first main air pipe (63) and the third main air pipe (71).
5. The device of claim 3, wherein: the negative pressure source is a vacuum pump; and the high pressure source is a pressurized gas tank. The outer wall of the limb compartment (51) is fixedly connected to an upper connector (52) and a lower connector (53), and the upper connector (52) and the lower connector (53) are distributed vertically. The upper connector (52) is connected to the threaded joint (74) through the auxiliary air pipe (41) and establishes an oxygen transmission channel. The lower connector (53) is connected to the first main air pipe (63) through the auxiliary air pipe (41) and establishes a negative pressure transmission channel.
6. The device of claim 1, wherein: The upper top of the partition (2) is fixedly connected to a control panel (3) for controlling the opening and closing of the negative pressure suction machine body (6) and the oxygen generator body (7) on one side of the second collection frame (5). The end of the limb chamber (51) is made of rubber material and the end of the limb chamber (51) is cylindrical.