Novel needle withdrawing type injection device for emergency patients

An injection device and needle withdrawal technology, which is applied in the direction of syringes, needles, and instruments introduced into the body, can solve the problems of safety hazards, needle sticking hands, and needles that cannot be replaced quickly, so as to reduce the convenience of operation and reduce the risk of contact. Risk, the effect of improving convenience

CN114733002APending Publication Date: 2022-07-12JIANGSU TAIZHOU PEOPLES HOSPITAL
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2022-07-12

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Abstract

The invention discloses a novel needle retreating type injection device for emergency patients. The novel needle retreating type injection device comprises a syringe, a piston block, a piston rod, a needle head and an assembling needle retreating assembly. A traditional inserting and pulling mode is abandoned for installing and withdrawing the needle head, and the needle assembling and withdrawing assembly is additionally arranged, so that the needle head can be installed and withdrawn in a rotating and sliding mode, and the convenience of assembling and withdrawing the needle head is greatly improved.
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Description

technical field

[0001] The invention relates to a novel needle withdrawal type injection device for emergency patients. Background technique

[0002] Syringe is an indispensable tool in medical activities. It can be used to extract various liquid medicines, and then inject different liquid medicines, and perform various medical actions according to different treatment purposes; the existing syringes generally include The syringe, needle, piston block, and piston rod are connected by inserting the needle into the upper end of the syringe through the connecting sleeve. However, because the needle and the upper end of the syringe are inserted too tightly, the needle cannot be quickly replaced after use. Medical staff need to use a lot of force to remove the needle, which is inconvenient to disassemble and separate the needle. Sometimes, the finger slips and the needle sticks to the hand. In addition, because the needle will be in contact with medicine, air and human skin, it wi...

Examples

Embodiment Construction

[0025] The content of the present invention will be described in further detail below with reference to the accompanying drawings.

[0026] like Figures 1 to 7 As shown in the figure, a new type of needle withdrawal type injection device for emergency patients includes a syringe 1, a piston block 3, a piston rod 2, a needle 4, and a needle withdrawal assembly 5; a piston block 3 is installed in the syringe 1; The piston rod 2 is installed in the middle of the outer side of the piston block 3, and the outer end of the piston rod 2 extends to the outside of the syringe 1; the assembled needle withdrawal assembly 5 includes a plug sleeve 51, an annular positioning head 52, a guide block 53, and a positioning ring body 56. Rotary push rod 55, internal thread drive ring 54; an annular positioning head 52 is connected to the upper end of the syringe barrel 1; There are external threaded annular surfaces around, and a guide block 53 is respectively installed on both sides of the lo...