Rear pressing type blood taking needle device
A blood collection needle and button technology, which is applied in medical science, sensors, diagnostic recording/measurement, etc., can solve problems such as inconvenient assembly, and achieve the effects of easy installation, easy use, and good stability
Inactive Publication Date: 2015-10-07
中山瑞福医疗器械科技有限公司
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Problems solved by technology
There are many kinds of disposable blood collection needles that are common in the market, with many components and inconvenient assembly
Method used
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[0022] A further detailed description will be made below in conjunction with the accompanying drawings and embodiments of the present invention:
[0023] Such as Figure 1-5 As shown, a rear push-type blood collection needle device includes a housing 1, a needle body 2, and a button 3. The front end of the inner cavity of the housing 1 is provided with a needle for the axial movement of the needle body 2. The body guide groove 11 and the rear end are provided with a button guide groove 12 for the axial movement of the button 3, the front end of the needle body 2 is provided with a needle head 21, and there is a button between the button 3 and the needle body 2. When the button 3 is pressed to use the blood collection needle device, the needle body 2 is elastically pushed to make the upper needle head 21 thrust out from the front end of the needle body guide groove 11 to the outside of the housing 1. The spring 4 on the needle body 2 There is an elastic extension arm 22 deploy...
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The invention discloses a rear pressing type blood taking needle device. The rear pressing type blood taking needle device comprises a shell, a needle body and a button, wherein the middle-front end of the inner cavity of the shell is provided with a needle body guiding groove, the rear end of the inner cavity of the shell is provided with a button guiding groove, a needle head is arranged at the front end of the needle body, a spring is arranged between the button and the needle body, an elastic spreading arm spreading toward the front end of the inner cavity of the shell is arranged on the needle body, a first limiting step for limiting the top of the elastic spreading arm is arranged in the shell, a push rod enabling the elastic spreading arm to be separated from the first limiting step is arranged on the button, the position, at the front end of the first limiting step, in the shell is further provided with a guiding inclined plane enabling the elastic spreading arm to be folded and store energy, an elastic buckle is also arranged on the button, and a first button placement hole matched with the elastic buckle for buckling, a second limiting step for conducting pressing stroke limiting on the button and a second button placement hole matched with the elastic buckle for buckling after pressing the button are also arranged in the shell in the assembly of the button. According to the rear pressing type blood taking needle device, the structure is simple and easy to achieve, constituent elements are less, the installation is convenient, limiting is conducted on the pressing stroke, the use is convenient, and safety and reliability are achieved.
Description
[technical field] [0001] The invention relates to a rear push-type blood collection needle device. [Background technique] [0002] At present, hospitals require the use of disposable blood collection needles with automatically retractable needles after blood collection to avoid cross-infection between patients and prevent medical staff from being punctured by mistake. There are many kinds of disposable blood collection needles common in the market, and there are many components, which are inconvenient to assemble. [0003] Therefore, it is necessary to solve the above problems. [Content of the invention] [0004] The present invention overcomes the deficiencies of the above-mentioned technologies, and provides a rear push-type blood collection needle device, which has a simple structure and is easy to realize, has few components, is convenient to install, and has limited and buckle positions in the push stroke, which is convenient, safe and reliable to use. [0005] To a...
Claims
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IPC IPC(8): A61B5/151
Inventor 黄弘昌周安教包骏苑敬阳万先伦齐维张林
Owner 中山瑞福医疗器械科技有限公司