[0002] There has been
cupping therapy using the principle of negative pressure in my country since ancient times. Its
curative effect is undoubted. There are countless people who have experienced it and benefited from it. There are some small improvements in the method of generating negative pressure, but the limitation of this traditional cupping is very obvious, that is, it can only improve a little
microcirculation by dilating capillaries in a small part of the treatment area that is relatively flat and thick in human muscles. The joints or whole limbs cannot be treated with negative pressure. At the same time, because there is no standard for traditional cupping techniques, the control of negative pressure value is very random, resulting in various treatment accidents.
[0003] There are many research inventors trying to improve the traditional cupping technology, which produced many beneficial improvements or attempts, but failed due to various reasons and design defects, such as the invention with the application number 201110113307.9, such as the China-Japan Friendship Hospital The application number is 96218196.X and the publication number CN 2096354U and other inventions all adopt the method of integral treatment cavity, which is fundamentally inconvenient for patients to use, bulky and not portable. There have been similar overall treatment cavity in foreign countries and adopt the
airbag sealing method China has introduced this type of equipment from the Netherlands before, but it was abandoned because of its extremely inconvenient use and severe
radial compression of blood vessels caused by improper sealing methods. Although it has been clinically proven that its
therapeutic effect is obvious
The inventor once went to the Fourth Military Medical University in my country where there was the earliest substantial research and a large number of clinical trials on this equipment, consulted relevant experts who participated in the research, gained professional experience, and knew the sealing defects of this type of imported equipment. Northwest Medical Devices Factory has applied for the improved sealing method with the application number 93203034.3, but because the defect of the imported equipment is not only the sealing problem but also the
friction problem, and the improved sealing method is still very inconvenient to operate, so it can only be abandoned. A device with very effective clinical effects has not benefited the general public so far
[0004] The inventor believes that the large-scale popularization and application of a
physical therapy instrument or any treatment
machine must first allow the common people to use it conveniently and reliably. All the above attempts in the prior art have the side effects of cumbersome operation,
heavy equipment and complicated sealing at the same time Quite obviously, in view of all the defects of the above products and inventions, the inventor, after careful research and repeated practice, found a method that is quite easy to operate and very reliable, that is, using a split or
combined treatment chamber and a winding sealing method at the same time , the two technologies cooperate with each other to achieve simple, light, reliable and economical application, while the seemingly simple sealing method of winding seal has been ignored by all technicians who develop negative pressure therapy equipment for limbs, because in the past, the overall cavity must meet the needs of the limbs. It is easy to enter and exit, so the opening is large, so only airbags or sealing sleeves or the German
rainbow seal can be used. Almost all professional and technical personnel in this field do not think that the winding seal can meet the requirements of sealing the opening of the overall treatment cavity, nor do they think that simple winding Membrane strength can withstand a large negative
pressure difference, so the prior art in this field adopts air bag or sealing sleeve seal and
rainbow seal, but the inventor breaks the routine and calculates through physical theory and practice proves that the winding sealing method is very suitable for split treatment chambers. Reliable and simple, the split treatment chamber can be completely designed according to the thickness of human limbs, the smaller the gap between the chamber wall and the limbs, the simpler and more reliable the winding seal, the operation is also very convenient, economical and applicable, the weight of the whole product including the control part can be controlled within 1 kg Left and right, stretch film sealing technology is the
best matching sealing method for
combined treatment chambers
Traditional methods such as
airbag sealing or bagging sealing in the prior art will inevitably lead to very inconvenient limbs entering and leaving the treatment chamber, because these two sealing methods must allow the affected limb to first penetrate into the
small hole in the middle of the sealing sleeve or
airbag, which is convenient for entering and exiting the equipment Whether it will be directly related to the success of the product
The so-called
rainbow sealing method adopted by the German negative pressure equipment Vacusport, the inventor has personally experienced it, is not suitable for high negative pressure situations, cannot really work for a long time, and is very complicated and poor in sealing effect
[0005] The invention of 201110113307.9, which was granted an invention patent, intends to solve the problem of difficulty in getting in and out of the limbs by changing the shape of the opening, but after a simple observation of this invention, it can be found that it does not solve the full-closed compression of the limbs by the variable
diameter ring at all. When the negative pressure is applied, the variable-
diameter ring compresses the blood vessels and prevents the flow of blood and
lymph tissue fluid to the negative pressure area, which greatly reduces the
therapeutic effect. There is no improvement in the cross-infection of limbs, so even if it is granted an invention patent, it cannot be actually produced due to its own technical defects.
[0006] Furthermore, since all current negative pressure therapy equipment adopts a straight cylindrical treatment chamber, according to physical principles, under the action of negative pressure, the
human body and the treatment chamber will have a pressure imbalance due to the
pressure difference between the inside and outside, and there will be a mutual relationship between them. Because of this unbalanced pressure, there will be a tendency for relative movement. When the negative pressure reaches a certain value such as -13Kpa, when the cross-sectional area of the leg of an ordinary person is 150 square centimeters, if the leg is completely inside the treatment chamber, this The
pressure difference between the inside and outside will reach about 20KG. Such a large pressure is enough to cause the treatment chamber to move. If the weight of the treatment chamber is increased and the friction with the ground is used to fix the treatment chamber, then the treatment chamber that can generate 20KG friction The weight must not be light, otherwise it will cause the relative movement of the seal, lose the seal and have no therapeutic significance
Existing foreign equipment is almost cumbersome up to about 50KG, not portable at all, and the side effects of sealing sleeves or airbags cannot be widely promoted
Professor Tong Xiaolin, the chief medical expert of the famous 973 project in China, had three consecutive
patent application numbers of 96204856.9, 96218473.X and 96218196.X when he was working in the China-Japan Friendship Hospital, trying to solve the above-mentioned problems of the straight type, but because it failed from Considering the principle of
structural mechanics, but using a complicated method, coupled with the simultaneous use of the overall cavity and sealing sleeve seal, so the invention can not be implemented and invalidated
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