Patents by Inventor Kewang TU

Kewang TU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Syringe with retractable needle
    Patent number: 11065394
    Abstract: The invention relates to a syringe with a retractable needle comprising a barrel (2) having a nozzle (19) integrated in a male Luer adapter element (26); a piston (3) slidably arranged in the barrel (2) and coupled to a sealing element (16), said sealing element (16) having a central channel (20); a needle assembly comprising a needle (4), a needle holder (6) and a female Luer adapter element (7); a spring assembly arranged in the piston (3) comprising a spring sleeve (12), a spring (13) mounted on the spring sleeve (12), a spring tensioning element (14) located on the spring sleeve (12) and held in position by the piston wall, and a plunger (15) mounted within the spring sleeve; and a piston cap (10); said piston (3) being coupled to the sealing element (16) by means of the spring tensioning element (14); said spring sleeve (12) being held in position within the piston (3) by a ring element (18) protruding from the inner wall of the piston (3) and supporting the proximal end of the spring sleeve (12), the sp
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: July 20, 2021
    Assignee: GUANGDONG INTMED MEDICAL APPLIANCE CO., LTD.
    Inventor: Kewang Tu
  • SYRINGE WITH RETRACTABLE NEEDLE
    Publication number: 20180236179
    Abstract: The invention relates to a syringe with a retractable needle comprising a barrel (2) having a nozzle (19) integrated in a male Luer adapter element (26); a piston (3) slidably arranged in the barrel (2) and coupled to a sealing element (16), said sealing element (16) having a central channel (20); a needle assembly comprising a needle (4), a needle holder (6) and a female Luer adapter element (7); a spring assembly arranged in the piston (3) comprising a spring sleeve (12), a spring (13) mounted on the spring sleeve (12), a spring tensioning element (14) located on the spring sleeve (12) and held in position by the piston wall, and a plunger (15) mounted within the spring sleeve; and a piston cap (10); said piston (3) being coupled to the sealing element (16) by means of the spring tensioning element (14); said spring sleeve (12) being held in position within the piston (3) by a ring element (18) protruding from the inner wall of the piston (3) and supporting the proximal end of the spring sleeve (12), the sp
    Type: Application
    Filed: July 15, 2015
    Publication date: August 23, 2018
    Applicants: GUANGDONG INTMED MEDICAL APPLIANCE CO., LTD, DMC MEDICAL LIMITED
    Inventor: Kewang TU