Low-molecular-weight heparin injection pen

Abstract

The invention discloses a low-molecular-weight heparin injection pen. The pen comprises a pen container and a low-molecular-weight heparin refill arranged in the pen container; a needle is arranged atthe lower end of the low-molecular-weight heparin refill; a spring movably sleeves the needle; the upper end of the spring makes contact with the low-molecular-weight heparin refill; the lower end ofthe spring makes contact with a limiting ring arranged on the inner wall of the pen container; a piston is arranged in the low-molecular-weight heparin refill; the upper portion of the piston is connected with an external thread push rod; the external thread push rod is connected with an adjusting wheel through a gear assembly; the adjusting wheel is partially located outside an opening in the side wall of the pen container; an internal thread part is fixedly arranged in the low-molecular-weight heparin refill; the external thread push rod movably penetrates through the internal thread part;and the upper end of the low-molecular-weight heparin refill is connected with the pushing rod through the connecting rod; a rotating block is rotatably arranged on the pen container; the pushing rodmovably penetrates into the rotating block; a notch with a downward opening is formed in the rotating block; and a limiting block is arranged on the pushing rod. The cumbersome process that a patientgoes to hospitals of clinics and the like every day can be avoided, and the use is convenient and safe.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a low-molecular-weight heparin injection pen. Background technique [0002] With the further understanding of venous thromboembolism (VTE) in recent years, the prevention of thrombosis has attracted more and more attention, and low-molecular-weight heparin has been widely used: all tumor patients are in a hypercoagulable state, especially when deep vein catheterization is performed during chemotherapy Almost all patients with high-risk VTE scores are prone to form thrombus and tumor embolus, and need exercise therapy or low-molecular-weight heparin to prevent thrombosis; patients with obstetrics, gynecology, orthopedics and other tumors have a high risk of VTE or pulmonary embolism after major surgery, and low-molecular-weight heparin is required. Heparin prevents thrombosis; prevention of thrombosis after deep vein catheterization requires low-molecular-weigh...

AI Technical Summary

Problems solved by technology

[0004] The current problems are: it is convenient for patients to get injections during hospitalization, but after leaving the hospital, they need to go to nearby clinics for low-molecular-weight heparin injections every day. It is inconvenient for patients to come and go, and the cost is expensive. The clinic refuses to inject take-away medicines due to fear of medical risks or there is no such medicine in the clinic

Due to the above reasons, patients cannot continue to use low molecular weight heparin regularly, and cannot really effectively prevent VTE and pulmonary embolism, which seriously threatens the health of patients.

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