Wound oxygen therapy device

Abstract

The invention discloses a wound oxygen therapy instrument, comprising a control board, a micro-flow regulating device, an air outlet pipe and a sensor electrically connected to the control board; the micro-flow regulating device comprises a micro-flow regulating valve and a fixed-value pressure reducing valve for outputting a fixed-value air pressure; the micro-flow regulating valve comprises a stepped valve core, a valve body and an inner sealing ring; the valve body is penetrated by a stepped accommodating cavity along an axial direction, a side wall of the valve body is provided with an air inlet hole connected to the accommodating cavity, a bottom of the valve body is provided with a valve port connected to the accommodating cavity, the valve port is connected to the air outlet pipe, the bottom of the valve core is inserted into the accommodating cavity and the valve port in sequence, the valve core is used to regulate the gap between the valve port and the valve core, the bottom of the valve core and the inner wall of the accommodating cavity form a gas flow channel, the inner sealing ring is sleeved outside the valve core and is in sealing contact with the inner wall of the accommodating cavity; the air inlet hole is connected to the air outlet of the fixed-value pressure reducing valve, and the air inlet hole, the gas flow channel, the valve port and the air outlet pipe are connected in sequence; it has the advantages of stable oxygen flow output and accurate control of oxygen flow.

Description

Technical Field

[0001] The invention relates to the field of medical devices, in particular to a wound oxygen therapy device. Background Art

[0002] Adequate oxygen (O2) supply is necessary for normal wound healing. It has long been recognized that when the tissue oxygen partial pressure (pO2) is below a certain level, the risk of chronic non-healing wounds increases. Tissue hypoxia (Hypoxia) occurs when oxygen consumption exceeds supply. Poor blood perfusion is generally considered to be related to wound hypoxia caused by decreased oxygen supply, which ultimately leads to impaired wound healing. Research and practice in the past few decades have made people realize that adequate oxygen supply is a necessary factor to ensure smooth wound healing. Persistent oxygen deficiency can cause damage to wound healing, especially in patients with chronic wounds. Studies have confirmed the relationship between oxygen deficiency and wounds related to peripheral arterial occlusive disease (PAOD) and diabetic foot ulcers (especially when combined with PAOD). At present, in response to oxygen deficiency, some new local oxygen therapies have emerged in the past few years to support wound healing. There are four main types: 1. Direct delivery of pressurized oxygen; 2. Delivery of unpressurized oxygen; 3. Chemical generation of oxygen through enzyme reactions; 4. Use of oxygen molecules and released molecules to enhance diffusion to increase oxygen content. These methods have some shortcomings. The flow rate of oxygen is not easy to control and it is difficult to achieve fine-tuning of the flow rate of oxygen. Summary of the invention

[0003] The purpose of the present invention is to solve the deficiencies of the prior art and provide a wound oxygen therapy device.

[0004] A technical solution of the present invention:

[0005] A wound oxygen therapy instrument, comprising a control panel, a micro-flow regulating device, an air outlet pipe and a sensor arranged in the air outlet pipe and electrically connected to the control panel; the micro-flow regulating device comprises a micro-flow regulating valve and a fixed-value pressure reducing valve for outputting a fixed-value air pressure; the micro-flow regulating valve comprises a stepped valve core, a valve body and an inner sealing ring; the valve body is penetrated by a stepped accommodating cavity along the axial direction, the side wall of the valve body is provided with an air inlet hole communicating with the accommodating cavity, the bottom of the valve body is provided with a valve port communicating with the accommodating cavity, the valve port is connected to the air outlet pipe, the bottom of the valve core is inserted into the accommodating cavity and the valve port in sequence, the valve core is used to adjust the gap between the valve port and the valve core, the bottom of the valve core and the inner wall of the accommodating cavity form a gas flow channel, the inner sealing ring is sleeved outside the valve core and is in sealing contact with the inner wall of the accommodating cavity; the air inlet hole is communicated with the air outlet of the fixed-value pressure reducing valve, and the air inlet hole, the gas flow channel, the valve port and the air outlet pipe are communicated in sequence.

[0006] A preferred solution is that the micro-flow regulating device also includes a valve seat, the micro-flow regulating valve also includes a switching nut, a fixed cavity is provided in the valve seat, the bottom of the micro-flow regulating valve is located in the fixed cavity, and a switching nut is provided on the top of the micro-flow regulating valve, and the switching nut is fixedly connected to the valve seat.

[0007] A preferred solution is that the outer wall of the valve core is provided with an external thread, the external thread is close to the top of the valve core, the inner wall of the accommodating cavity is provided with an internal thread, and the valve core is inserted into the accommodating cavity and is threadedly connected to the accommodating cavity.

[0008] A preferred solution is that a damping ring is sleeved on the top of the valve core, and the damping ring is pressed between the valve body and the adapter nut.

[0009] A preferred solution is that the micro-flow regulating device also includes a spring, which is sleeved on the bottom of the valve core and located in the accommodating cavity, with one end of the spring abutting against the step surface of the valve core and the other end abutting against the bottom of the accommodating cavity.

[0010] A preferred solution is that the micro-flow regulating device also includes an alarm, which is electrically connected to the control board. The sensor detects the air pressure signal in the trachea and transmits the air pressure signal to the control board. When the control board detects that the air pressure signal is abnormal, the control board controls the alarm to sound an alarm.

[0011] A preferred solution is that the wound oxygen therapy device also includes a shell and a display screen, the control board, the micro-flow regulating device, and the air outlet pipe are respectively fixed in the shell, the display screen is arranged on the upper surface of the shell, and the display screen is electrically connected to the control board.

[0012] A preferred solution is that the housing is provided with an adjustment hole, the top of the valve core extends out of the adjustment hole, and the top end surface of the valve core is provided with an adjustment groove for adjusting the depth of the valve core inserted into the valve port.

[0013] A preferred solution is that a battery receiving slot is provided in the housing, a battery is provided in the battery receiving slot, and the battery is electrically connected to the control board.

[0014] A preferred solution is that the micro-flow regulating device also includes an air inlet connector, and the air inlet connector is connected to the air inlet of the fixed value pressure reducing valve.

[0015] In summary, the beneficial effects of the present invention are as follows: high-pressure oxygen enters the fixed-value pressure reducing valve, and after passing through the fixed-value pressure reducing valve, the high-pressure oxygen is converted into oxygen of a predetermined pressure under the action of the fixed-value pressure reducing valve, and the oxygen enters the gas flow channel from the air inlet of the micro-flow regulating valve, and is finally output through the gap between the valve core and the valve port, and is output from the gap between the valve core and the valve port, and the output oxygen flow rate is 0.16sccm to 0.830sccm; when it is necessary to increase the output oxygen flow rate, the valve core is rotated to increase the gap between the valve core and the valve port, thereby increasing the output oxygen flow rate; when it is necessary to reduce the output oxygen flow rate, the valve core is rotated to reduce the gap between the valve core and the valve port, thereby reducing the output oxygen flow rate; the output oxygen can be used to treat wounds; the sensor can detect the oxygen pressure in the valve port or the air outlet pipe, and can detect the oxygen flow rate in real time.

[0016] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the stereogram of the present invention;

[0018] Figure 2 is an exploded view of the present invention;

[0019] Figure 3 It is a three-dimensional micro-flow regulating device in the present invention. Figure 1 ;

[0020] Figure 4 It is a three-dimensional micro-flow regulating device in the present invention. Figure 2 ;

[0021] Figure 5 is a partial cross-sectional view of the micro-flow regulating device of the present invention;

[0022] Figure 6 This is a front view of the micro-flow regulating valve of the present invention;

[0023] Figure 7 is a cross-sectional view of the micro-flow regulating valve of the present invention;

[0024] Figure 8 is a cross-sectional view of the valve core in the present invention;

[0025] Fig. 9 It is a cross-sectional view of the valve body in the present invention. DETAILED DESCRIPTION

[0026] To illustrate the concept and purpose of the present invention, the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] The first embodiment, as Figures 1 to 9 As shown, a wound oxygen therapy device includes a control panel 10, a micro-flow regulating device 20, an air outlet pipe 30 and a sensor arranged in the air outlet pipe 30 and electrically connected to the control panel 10; the micro-flow regulating device 20 includes a micro-flow regulating valve 21 and a fixed-value pressure reducing valve 22 for outputting a fixed air pressure; the micro-flow regulating valve 21 includes a stepped valve core 211, a valve body 212 and an inner sealing ring 213; the valve body 212 is penetrated by a stepped accommodating cavity 214 along the axial direction, the side wall of the valve body 212 is provided with an air inlet 215 connected to the accommodating cavity 214, the bottom of the valve body 212 is provided with a valve port 216 connected to the accommodating cavity 214, the valve port 216 is connected to the air outlet pipe 30, and the bottom of the valve core 211 is inserted into the accommodating cavity 214 in sequence. The valve core 211 is used to adjust the gap between the valve port 216 and the valve core 211. The gap between the valve core 211 and the valve port 216 can be adjusted by rotating the valve core 211. The bottom of the valve core 211 is a truncated cone structure, and the valve port 216 is a circular structure. As the valve core 211 is continuously inserted into the valve port 216, the gap between the valve core 211 and the valve port 216 is continuously reduced. The bottom of the valve core 211 and the inner wall of the accommodating cavity 214 form a gas flow channel 218. The inner sealing ring 213 is sleeved outside the valve core 211 and is in sealing contact with the inner wall of the accommodating cavity 214. The air inlet 215 is connected to the air outlet of the fixed value pressure reducing valve 22. The air inlet 215, the gas flow channel 218, the valve port 216 and the air outlet pipe 30 are connected in sequence.

[0028] like Figures 1 to 9 As shown, high-pressure oxygen enters the fixed-value pressure reducing valve 22. After passing through the fixed-value pressure reducing valve 22, the high-pressure oxygen is converted into oxygen of a predetermined pressure under the action of the fixed-value pressure reducing valve 22. The oxygen enters the gas flow channel 218 through the air inlet 215 of the micro-flow regulating valve 21, and is finally output through the gap between the valve core 211 and the valve port 216. The oxygen flow rate output from the gap between the valve core 211 and the valve port 223 is 0.160sccm to 0.830sccm. When it is necessary to increase the output oxygen flow rate, the valve core 211 is rotated to increase the gap between the valve core 211 and the valve port 223, thereby increasing the output oxygen flow rate; when it is necessary to reduce the output oxygen flow rate, the valve core 211 is rotated to reduce the gap between the valve core 211 and the valve port 223, thereby reducing the output oxygen flow rate.

[0029] like Figures 1 to 9 As shown, the sensor can detect the oxygen pressure in the valve port 216 or the air outlet pipe 30, and can detect the oxygen flow in real time.

[0030] like Figures 1 to 9As shown, the present invention is applied to wound treatment. When in use, external oxygen is connected to the fixed-value pressure reducing valve 22, and the oxygen is converted into oxygen of a predetermined pressure under the action of the fixed-value pressure reducing valve 22. The oxygen enters the gas flow channel 218 through the air inlet 215 of the micro-flow regulating valve 21, and is finally output through the gap between the valve core 211 and the valve port 216, thereby continuously supplying nutrition to the wound and accelerating wound healing.

[0031] like Figures 1 to 9 As shown, the present invention has stable flow output and strong reliability; can accurately control oxygen flow; simple structure, easy operation and maintenance; micro-flow regulating valve controls flow, has a large controllable flow range and a long service life. It can stably perform high-precision micro-flow oxygen regulation output and can adapt to changes in inlet pressure of 0.15MPa to 0.8MPa.

[0032] Specifically, Figures 1 to 9 As shown, the accommodating cavity 214 includes a first annular hole 214a and a second annular hole 214b, an annular limiting groove 214c is provided between the first annular hole 214a and the second annular hole 214b, and the aperture of the first annular hole 214a is larger than the aperture of the second annular hole 214b.

[0033] like Figures 1 to 9 As shown, the valve core 211 includes a first core section 211a, a second core section 211b, a third core section 211c and a fourth core section 211d. The radius of the first core section 211a is smaller than the radius of the second core section 211b, the radius of the second core section 211b is larger than the radius of the third core section 211c, the outer wall of the third core section 211c is provided with a plurality of grooves 211e, the inner sealing ring 213 is fixed in the grooves 211e, and the radius of the third core section 211c is larger than the radius of the fourth core section 211d. The radius of the third core 211c is greater than that of the fourth core 211d. The fourth core 211d is inserted into the valve port 223 and there is a gap between the fourth core 211d and the valve port 223. The fourth core 211d is a truncated cone structure, and the valve port 223 is a circular structure. As the fourth core 211d is continuously inserted into the valve port 223, the gap between the valve port 223 and the fourth core 211d is continuously changed. The aperture of the first annular hole 214a is matched with the outer diameter of the second core 211b, and the aperture of the second annular hole 214b is matched with the outer diameter of the third core 211c.

[0034] The second embodiment, as Figures 1 to 9As shown, the difference between this embodiment and the first embodiment is that the micro-flow regulating device 20 further includes a valve seat 23, the micro-flow regulating valve 21 further includes a transfer nut 217, a fixed cavity is provided in the valve seat 23, the bottom of the micro-flow regulating valve 21 is located in the fixed cavity, and the top of the micro-flow regulating valve 21 is sleeved with a transfer nut 217, and the transfer nut 217 is fixedly connected to the valve seat 23. The air outlet joint 31 passes through the valve seat 23 and is connected to the air outlet end of the air outlet pipe 30. The transfer nut 217 is penetrated by a through hole, and the diameter of the through hole of the transfer nut 217 is larger than the diameter of the first section core 211a of the valve core 211, and the first section core 211a of the valve core 211 passes through the through hole.

[0035] like Figures 1 to 9 As shown, the outer wall of the valve core 211 is provided with an external thread, and the external thread is close to the top of the valve core 211, that is, the second section core 211b of the valve core 211 is provided with an external thread, and the inner wall of the accommodating cavity 214 is provided with an internal thread, that is, the inner wall of the first annular hole 214a of the accommodating cavity 214 is provided with an external thread, and the second section core 211b of the valve core 211 is inserted into the accommodating cavity 214 and is threadedly connected with the first annular hole 214a of the accommodating cavity 214.

[0036] like Figures 1 to 9 As shown, a damping ring 24 is sleeved on the top of the valve core 211 , and the damping ring 24 is pressed between the valve body 212 and the adapter nut 217 .

[0037] like Figures 1 to 9 As shown, the micro-flow regulating device 20 further includes a spring 25, which is sleeved on the bottom of the valve core 211 and located in the accommodating cavity 214, one end of the spring 25 abuts against the step surface of the valve core 211, and the other end abuts against the bottom of the accommodating cavity 214. The spring 25 is in a compressed state, and the spring 25 plays a certain buffering role.

[0038] The third embodiment, as Figures 1 to 9 As shown, the difference between this embodiment and the first embodiment or the second embodiment is that the micro-flow regulating device 20 also includes an alarm, which is electrically connected to the control board 10, and the sensor detects the air pressure signal in the air outlet pipe 30 and transmits the air pressure signal to the control board 10. When the control board 10 detects that the air pressure signal is abnormal, the control board 10 controls the alarm to alarm. The sensor can detect the oxygen pressure at the valve port 223. When the sensor detects that the oxygen pressure at the valve port 223 is abnormal, the sensor detects the air pressure signal at the valve port 223 and transmits the air pressure signal to the control board 10, and the control board 10 controls the alarm to alarm.

[0039] like Figures 1 to 9As shown, the wound oxygen therapy device also includes a shell 40 and a display screen 50. The control board 10, the micro-flow regulating device 20, and the air outlet pipe 30 are respectively fixed in the shell 40. The display screen 50 is arranged on the upper surface of the shell 40. The display screen 50 is electrically connected to the control board 10. The display screen 50 is used to display the flow or pressure of oxygen at the valve port 223.

[0040] like Figures 1 to 9 As shown, the housing 40 is provided with an adjustment hole 44, and the top of the valve core 211 extends out of the adjustment hole 44, which is convenient for adjusting the valve core 211, and the top end face of the valve core 211 is provided with an adjustment groove for adjusting the depth of the valve core 211 inserted into the valve port 216. The top of the valve core 211 extends out of the adjustment hole 44, which is convenient for rotating the valve core 211, and the adjustment groove on the top end face of the valve core 211 is a cross groove. When the output flow rate needs to be adjusted, a screwdriver is used to rotate the cross groove at the top of the valve core 211 to drive the valve core 211 to move axially, thereby controlling the gap between the internal valve core 211 and the valve port 216, and then controlling the output flow rate. A battery receiving groove 41 is provided in the housing 40, and a battery 42 is provided in the battery receiving groove 41, and the battery 42 is electrically connected to the control board 10.

[0041] like Figures 1 to 9 As shown, the micro-flow regulating device 20 further includes an air inlet connector 26, which is connected to the air inlet of the fixed value pressure reducing valve 22. The air inlet connector 26 is a quick connector, which is convenient for connecting the air path structure and has a wide range of uses.

[0042] like Figures 1 to 9 As shown, the fixed-value pressure reducing valve 22 is used to output a fixed-value pressure and is fixed on the valve seat 23 by screws. The air inlet joint 26 is a quick joint, and the air inlet joint 26 is used to connect the φ6 pipeline to the valve seat 23. The micro-flow regulating valve 21 includes a valve core 211, a damping ring 24, a transfer nut 217, an inner sealing ring 213, a valve body 212 and a spring 24. The transfer nut 217 and the valve body 212 are connected by threads, and the transfer nut 217 is fixed on the valve seat 23 by a set screw, thereby pressing the damping ring 24 and limiting the valve core 211. The outer sealing ring 219 is provided on the outside of the valve body 212 to prevent gas leakage. When the output flow needs to be adjusted, the cross groove 211 at the top of the valve core 211 is rotated by a screwdriver to drive the valve core 211 to move axially, thereby controlling the gap between the internal valve core 211 and the valve port 233, and then controlling the output flow. The air inlet connector 26 is a quick connector, which is convenient for connecting the air path structure and has a wide range of uses.

[0043] The above is a specific implementation of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A wound oxygen therapy device, characterized in that: It includes a control board, a micro-flow regulating device, an air outlet pipe and a sensor arranged in the air outlet pipe and electrically connected to the control board; the micro-flow regulating device includes a micro-flow regulating valve and a fixed-value pressure reducing valve for outputting a fixed-value air pressure; the micro-flow regulating valve includes a stepped valve core, a valve body and an inner sealing ring; the valve body is penetrated by a stepped accommodating cavity along the axial direction, the side wall of the valve body is provided with an air inlet hole connected to the accommodating cavity, the bottom of the valve body is provided with a valve port connected to the accommodating cavity, the valve port is connected to the air outlet pipe, the bottom of the valve core is inserted into the accommodating cavity and the valve port in sequence, and the The valve core is used to adjust the gap between the valve port and the valve core, the bottom of the valve core and the inner wall of the accommodating chamber form a gas flow channel, the inner sealing ring is sleeved outside the valve core and is in sealing contact with the inner wall of the accommodating chamber; the air inlet is connected to the air outlet of the fixed value pressure reducing valve, the air inlet, the gas flow channel, the valve port and the air outlet pipe are connected in sequence, the micro-flow regulating device also includes a valve seat, the micro-flow regulating valve also includes a switching nut, a fixed cavity is provided in the valve seat, the bottom of the micro-flow regulating valve is located in the fixed cavity, the top of the micro-flow regulating valve is sleeved with a switching nut, the switching nut and The valve seat is fixedly connected, and the micro-flow regulating device also includes a spring, which is sleeved on the bottom of the valve core and located in the accommodating cavity, one end of the spring abuts against the step surface of the valve core, and the other end abuts against the bottom of the accommodating cavity; the accommodating cavity includes a first annular hole and a second annular hole, an annular limiting groove is provided between the first annular hole and the second annular hole, and the aperture of the first annular hole is larger than the aperture of the second annular hole; the valve core includes a first section core, a second section core, a third section core and a fourth section core, the radius of the first section core is smaller than the radius of the second section core, and the radius of the second section core is larger than the radius of the third section core, The outer wall of the third core is provided with a plurality of grooves, and the inner sealing ring is fixed in the grooves. The radius of the third core is greater than that of the fourth core, and a gas flow channel is formed between the third core and the inner wall of the accommodating cavity. The radius of the third core is greater than that of the fourth core, and the fourth core is inserted into the valve port, and there is a gap between the fourth core and the valve port. The fourth core is a truncated cone structure, and the valve port is a circular structure. As the fourth core is continuously inserted into the valve port, the gap between the valve port and the fourth core is continuously changed; the aperture of the first annular hole is matched with the outer diameter of the second core, and the aperture of the second annular hole is matched with the outer diameter of the third core.

2. The wound oxygen therapy device according to claim 1, characterized in that: The outer wall of the valve core is provided with an external thread, the external thread is close to the top of the valve core, the inner wall of the accommodating cavity is provided with an internal thread, and the valve core is inserted into the accommodating cavity and is threadedly connected with the accommodating cavity.

3. The wound oxygen therapy device according to claim 1 or 2, characterized in that: A damping ring is sleeved on the top of the valve core, and the damping ring is pressed tightly between the valve body and the adapter nut.

4. The wound oxygen therapy device according to claim 1, characterized in that: The micro-flow regulating device also includes an alarm, which is electrically connected to the control board. The sensor detects the air pressure signal in the trachea and transmits the air pressure signal to the control board. When the control board detects that the air pressure signal is abnormal, the control board controls the alarm to sound an alarm.

5. The wound oxygen therapy device according to claim 4, characterized in that: The wound oxygen therapy device also includes a shell and a display screen. The control board, the micro-flow regulating device, and the air outlet pipe are respectively fixed in the shell. The display screen is arranged on the upper surface of the shell, and the display screen is electrically connected to the control board.

6. The wound oxygen therapy device according to claim 5, characterized in that: The shell is provided with an adjusting hole, the top of the valve core extends out of the adjusting hole, and the top end surface of the valve core is provided with an adjusting groove for adjusting the depth of the valve core inserted into the valve port.

7. The wound oxygen therapy device according to claim 5, characterized in that: A battery receiving slot is arranged in the shell, a battery is arranged in the battery receiving slot, and the battery is electrically connected to the control board.

8. The wound oxygen therapy device according to claim 1 or 2, characterized in that: The micro-flow regulating device also includes an air inlet connector, which is communicated with the air inlet of the fixed value pressure reducing valve.

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