Positive pressure joint capable of medicating without using needle

• Main Authors: PENG HAIBO, PENG HAIPENG, ZHANG ZHIFEN, HU PENGFEI
• Format: Patent
• Language: Chinese; English
• Published: 23.01.2013
• Subjects: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE

The utility model discloses a positive pressure joint capable of medicating without using a needle, and the positive pressure joint comprises a hollow upper base, a sealing piece and a base. The spiral spring-shaped sealing piece is adopted, an arc-shaped hole is formed in the end surface of the sealing piece, can be effectively sealed when the medicating is not needed, and can be extruded by a medicating device to form a passage for medicating when the medicating is needed; the oval end surface and a circular hole formed in the opening part of the upper base can be effectively sealed; as being spiral spring-shaped, the elastic piece is good in elasticity and is comfortable in handfeeling when the medicating is carried out, and when the medicating device retracts, the positive pressure is formed due the elastic action, a liquid medicine retained in the needle is pushed into the blood vessel, so that the pipe sealing effect is achieved, further the backflow of blood is avoided effectively to avoid forming thro