Negative pressure drainage pressure regulating device, system including the device and control method thereof
A technology of negative pressure drainage and pressure regulating device, which can be used in extraction and pumping systems, suction devices, hypodermic injection devices, etc., and can solve problems such as side effects of wound healing and affecting wound healing.
Active Publication Date: 2021-08-13
3M INNOVATIVE PROPERTIES CO
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
That is to say, during the course of treatment, the demand for high or low negative pressure values changes; and if high negative pressure continues to be provided in the later stage of treatment, it will have side effects on wound healing and affect wound healing
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0033] Specific embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like reference numerals designate like or similar elements throughout. The specific embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but not construed as a limitation of the present invention.
[0034] figure 1 A negative pressure drainage treatment system is shown, which mainly includes: a wound suction cup 1, a negative pressure source 5 for providing negative pressure, a liquid accumulation tank 3, drainage tubes 2, 6, and a negative pressure drainage pressure regulating device 4, Wherein, the wound sucker 1 and the liquid accumulation tank 3 are connected through the drainage tube 6, and the liquid accumulation tank 3 and the negative pressure source 5 are connected through the drainage tube 2, and the negative pressure drainage pressure...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a negative pressure drainage and pressure regulating device arranged at a drainage tube between a negative pressure source and a liquid accumulation tank. The negative pressure drainage pressure regulating device includes: a pressure sensor, used to sense and feed back the pressure value of the gas flowing to the liquid accumulation tank in the drainage tube; and a valve assembly, used to switch between continuous constant pressure mode and intermittent Switch between regulation modes. The valve assembly includes: a mechanical pressure regulating valve, set on the side of the drainage tube close to the negative pressure source, used to preset a safe negative pressure value; a first solenoid valve, set on the side of the drainage tube close to the liquid accumulation tank, used to The pressure value fed back by the sensor realizes the low negative pressure state in the drainage tube in an on-off manner; and, the second solenoid valve is arranged on the side of the drainage tube close to the liquid accumulation tank, and is used to realize drainage in an on-off manner according to the pressure value fed back by the pressure sensor High negative pressure state in the tube. The present invention also provides a negative pressure drainage and pressure regulation system comprising the aforementioned device and a control method thereof.
Description
technical field [0001] The present invention relates to the field of negative pressure wound recovery therapy equipment, in particular to a negative pressure drainage pressure regulating device, a negative pressure drainage treatment system including the device and a control method for the system. Background technique [0002] Negative Pressure Wound Therapy (NPWT) is a new type of therapy to accelerate wound healing that has emerged in the past two decades, and has been widely used in the treatment of a series of refractory wounds, including acute, chronic, Infected wounds. It can improve wound healing rate, reduce bacterial colonization and reproduction, and minimize the number of dressing changes. However, in practice, during the treatment of a patient's wound, usually at the beginning, the wound is more serious and requires a higher negative pressure, but in the later stage of treatment, the wound gradually heals and does not require a larger negative pressure. That is...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): A61M1/00
CPCA61M1/74A61M1/90
Inventor 袁斯华江边旭杨英花刘文杰曹海萍杨志军
Owner 3M INNOVATIVE PROPERTIES CO