Skin perforation blunt needle device
A blunt needle and skin technology, applied in the field of skin perforation blunt needle device, can solve the problems of nerve paralysis, blood vessel rupture, easy to puncture patients, etc., and achieve the effect of preventing pollution and good puncture force
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Embodiment 1
[0023] The invention discloses a blunt needle device for skin perforation, which comprises a stainless steel needle tube 1, a handle 6 and a needle tube protective cover. One end of the stainless steel needle tube 1 is fixed on the handle 6, and the other end is a puncture needle. The needle tube protective sleeve (not shown in the figure) is sleeved on the outside of the needle tube and tightly covered on the handle 6 . The end of the stainless steel needle tube 1 away from the handle 6 is set as a hemispherical blade surface 2, and the top of the spherical surface of the stainless steel needle tube 1 is provided with a concave knife edge 4, and the concave knife edge 4 forms an acute angle of 10°-80° with the central axis of the needle tube. The hemispherical blade surface 2 replaces the pointed and sharp angle shape of the known puncture needle, and the concave knife-edge blade 4 is used as a knife-edge for cutting the skin, and the stainless steel needle tube 1 is smoothly ...
Embodiment 2
[0027] The present invention discloses a blunt needle device for skin perforation. The difference between this embodiment and Embodiment 1 is that: On the basis of the structure of Embodiment 1, this embodiment is provided with a fixed ring 7 outside the handle 6, and the fixed ring 7 is connected with The flexible elastic cord 71 is provided with a silicone sleeve 72 at the end of the flexible elastic cord 71 away from the fixing ring 7 , and the flexible elastic cord 71 and the silicone sleeve 72 are integrally formed. In this embodiment, the fixing ring 7 may be fixed outside the handle 6 by colloid, or may be detachably installed on the handle 6 . The silicone sleeve 72 is sleeved on the stainless steel needle tube 1 and has an interference fit with the stainless steel needle tube 1 . Due to the unique material of the silicone sleeve 72 , when the silicone sleeve 72 is slid along the silicone sleeve 72 , resistance will be generated, thereby achieving the effect of limitin...
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