A negative pressure blood collection pen
A blood collection pen and negative pressure technology, applied in the medical field, can solve problems such as poor blood collection effect, achieve low pain, stable and reliable adsorption effect, and good experience
Active Publication Date: 2021-05-11
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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[0046] 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.
[0047] 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.
[0048] In the description of the...
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The present invention relates to the field of medical technology, in particular to a negative pressure blood collection pen, which at least includes a negative pressure forming process in a pressure change chamber. The negative pressure forming process includes a first stage, a second stage and a third stage. In the first stage of negative pressure in the cavity, the pressure change cavity is isolated from the outside world. The negative pressure environment in the pressure change cavity has a stable and reliable adsorption effect on the peripheral skin, making the peripheral skin form a bulge extending into the pressure change cavity, and the blood collection needle Puncture on the bulge, the patient feels less pain; after the puncture of the blood collection needle, although the outside air enters the pressure change cavity in the second and third stages, it will still maintain a negative pressure environment for a certain period of time, so that the peripheral The blood in the bulge gathers to the puncture site, so that the required blood volume can be collected when the puncture is shallow, so that the patient feels less pain and has a better experience.
Description
technical field [0001] The invention relates to the field of medical technology, in particular to 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 the pain of the patient durin...
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IPC IPC(8): A61B5/151
CPCA61B5/150022A61B5/150099A61B5/150145A61B5/150175A61B5/15111A61B5/15117
Inventor 胡超宇
Owner PROMISEMED HANGZHOU MEDITECH