Improved type head press type one-time blood collecting device

• Main Authors: CAO YUEPING, SHI GUOPING
• Format: Patent
• Language: English
• Published: 06.01.2016
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

An improved type head press type one-time blood collecting device comprises a casing, a pin core, a spring and a push ejection device, and an elastic clamp used for clamping and locking the pin core is arranged in the casing; the device is characterized in that a yielding space is formed in the tail end of the elastic clamp in a lateral opening direction; a stop block and an inclined surface are arranged on the push ejection device; in a locking state before ejection, the stop block occupies the yielding space so as to limit the lateral opening amplitude of the elastic clamp; during press ejection, the pushing device moves back and forth in the casing and drives the stop block to leave the yielding space, at the same time, the inclined surface of the push ejection device forces an elastic claw to open laterally, and the pin core is guided to produce ejection puncture. According to the improved type head press type one-time blood collecting device, the allowed opening amplitude of the elastic clamp is controlled by controlling the side yielding space, and finally, the reliability whether the pin core breaks away from clamping of the elastic clamp can be effectively controlled. The mechanism reliability problem caused by clamping force of the elastic clamp in a blood collecting device ejection mechanism and the problem between the use and the hand feeling are solved.