High-pressure bone puncture injector and application thereof

Abstract

The invention relates to a high-pressure bone puncture injector and an application thereof, and belongs to the technical field of orthopedic treatment instruments. The high-pressure bone puncture injector comprises a puncture device and a high-pressure injector body, wherein the puncture device comprises an inner core, a sleeve, an elastic piece and a push-out device; the inner core comprises a needle tip and a needle tube, the needle tip is arranged at the front end of the needle tube, and a needle hole is formed in the needle tube; the sleeve is arranged outside the needle tube in a sleevingmanner, and the needle tip extends out of the front end of the sleeve; one end of the elastic piece abuts against the inner core, and the other end of the elastic piece abuts against the sleeve; thepush-out device pushes the inner core to move in the sleeve; and the high-pressure injector body comprises a needle cylinder, an injection pusher and a connector, the connector communicates with the needle cylinder, the connector is detachably connected with the tail end of the needle tube, and the injection pusher is arranged in an inner cavity of the needle cylinder, can slide along the inner wall of the needle cylinder and is used for pushing liquid in the inner cavity of the needle cylinder into the needle tube from the connector. By adopting the injector, the KOA injection operation can be simplified, the injection difficulty of the subchondral bone injury center is reduced, and the research and development of new drugs or the large-scale BML treatment becomes possible.

Description

technical field [0001] The invention relates to the technical field of orthopedic treatment instruments, in particular to a high-pressure bone puncture injector and its application. Background technique [0002] Knee Osteoarthritis (KOA) is a common chronic disease that often causes joint pain and functional limitations in the elderly, which in turn affects their quality of life. Joint replacement surgery is ultimately the only option in some moderate to severe cases for pain relief and improved function (Felson DT, N Engl J Med 2006). The survey shows that about 25% of the elderly over the age of 55 have knee pain for most of the month, and nearly half of these people have radiographic knee OA, so they are diagnosed as symptomatic knee OA (Felson DT, N Engl J Med 2006). In my country, the prevalence of symptomatic knee OA reaches 8.1%, and it increases with age (Tang X, Arthritis & Rheumatology 2016). Nearly 50,000 OA patients undergo knee or hip arthroplasty in my count...

AI Technical Summary

Problems solved by technology

However, most of these treatment methods need to inject specific substances into the center of the subchondral bone lesion, and most of the current injection methods need to be performed under anesthesia in the operating room, and there is no special instrument for this operation, resulting in the limited treatment

Images