DEVICE OF SOLID OR SEMI-SOLID IMPLANT INJECTION Russian patent published in 2010 - IPC A61M37/00 A61M5/32 

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment and deals with device for injection and, in particular device for intramuscular or subcutaneous injection of active pharmaceutical base in solid or semi-solid state, usually called implant. Device for implant injection into tissue includes hollow main body, to which attached is hollow needle into which implant is introduced; additional body, located coaxially inside main body and surrounding needle and rod with piston which can slide in axis direction inside hollow needle. Device for injection is located in such way that when device is pressed to tissue, main body can slide on additional body from proximal position into distal position allowing needle to penetrate into tissue. Between main body and rod with piston located are means of cohesion so that movement of said main body is accompanied by simultaneous movement of rod with piston. Means of cohesion are released in such way that rod with piston remain in fixed position and hold at the required depth in tissue until needle is not withdrawn from tissue, when main body returns into its distal position from proximal position. In the second version of implementation device for injection is held in such way that when pressure causing penetration of needle into tissue is executed on main body, rod with piston remains fixed and holds implant at the required depth till the moment when needle starts to be removed from tissue. Its withdrawal is controlled by main body which slides on additional body from initial position in which main body rests on distal end of additional body, into final position, in which main body rests on proximal end of additional body, rod with piston being gradually introduced into hollow needle.

EFFECT: invention is not complicated, which reduces risk of malfunction, in addition invention has limited number of units due to which is less expensive in manufacturing and simple in assembling.

52 cl, 24 dwg