The invention discloses a
skin perforation
blunt needle device, relates to the technical field of
medical instruments, and aims to solve the problems that in the prior art, a conventional needle head is used as a buried line,
subcutaneous tissue of a patient is easily punctured, and potential safety hazards exist. According to the technical scheme, the
syringe is characterized by comprising a stainless steel needle tube, a
handle and a needle tube protective sleeve, the stainless steel needle tube is fixed to the
handle, and the needle tube protective sleeve is arranged outside the needle tube and tightly covers the
handle; one end, far away from the handle, of the stainless steel needle tube is provided with a hemispherical blade surface, the top of the spherical surface of the stainless steel needle tube is provided with a concave knife edge blade, the concave knife edge blade and the central axis of the needle tube form an
acute angle of 10-80 degrees, the hemispherical blade surface is provided with an inclined surface, the inclined surface and the central axis of the needle tube form an included angle of 10-50 degrees, and the vertex of the included angle is close to the top of the spherical surface; the stainless steel needle tube is provided with a groove located at the bottom of the inwards-concave knife edge, and the groove is communicated with the stainless steel needle tube. According to the invention, the risk of
puncturing subcutaneous tissues and blood capillaries is effectively reduced in terms of puncture force.