Blood sampling method of negative-pressure blood sampling pen
A lancing pen and negative pressure technology, applied in the medical field, can solve problems such as poor blood collection effect, and achieve the effects of low pain, stable and reliable adsorption effect, and good experience
Active Publication Date: 2020-12-08
PROMISEMED HANGZHOU MEDITECH
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to solve the defect that the blood collection method of the negative pressure blood collection pen in the prior art leads to poor blood collection effect
Method used
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[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0041] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "inner", "outer" etc. Orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.
[0042] In the description of the...
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The invention relates to the technical field of medical treatment, in particular to a blood sampling method of a negative pressure blood sampling pen. The blood sampling method at least comprises a negative pressure forming process in a pressure change cavity, wherein the negative pressure forming process comprises a first stage, a second stage and a third stage; and the first stage of negative pressure is formed in the pressure change cavity, and the pressure change cavity is isolated from the outside. The adsorption effect of the negative pressure environment in the pressure change cavity onthe peripheral skin is stable and reliable, so that a bulge extending into the pressure change cavity is formed at the peripheral skin, a blood taking needle punctures the bulge, and the pain of a patient is lower; after the blood taking needle punctures, although external air enters the pressure change cavity at the second stage and the third stage, the negative pressure environment can still bekept within a certain period of time, blood in the peripheral bulge is gathered to the puncture position, and therefore the needed blood taking amount can be collected under the condition that puncture is relatively shallow, the pain of a patient is relatively low, and the experience is better.
Description
technical field [0001] The invention relates to the field of medical technology, in particular to a blood collection method of a negative pressure blood collection pen. Background technique [0002] The blood collection pen used for peripheral blood collection is a commonly used medical device, which is used with a disposable blood collection needle. In the prior art, the control of pain, puncture depth, and bleeding volume is unstable during use of conventional blood collection pens. [0003] For this reason, there is a blood collection pen with negative pressure function on the market, that is, when the blood collection needle is triggered, a negative pressure chamber is formed inside the blood collection pen, and the peripheral skin is absorbed into the negative pressure chamber through negative pressure to form a bulge. Puncture the above-mentioned bulge to form a blood collection point. The advantage of the negative pressure blood collection pen is that it can reduce ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): A61B5/151
CPCA61B5/150022A61B5/150099A61B5/150145A61B5/150175A61B5/15111A61B5/15117
Inventor 胡超宇
Owner PROMISEMED HANGZHOU MEDITECH