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Bone cement stirrer

A technology of agitator and bone cement, applied in the field of medical appliances, can solve the problems of difficult control of viscosity, uneven mixing, unsatisfactory bone cement, etc., and achieve good biomechanical properties and ideal filling effects.

Active Publication Date: 2011-04-13
SHANGHAI KINDLY MEDICAL INSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Usually, the bone cement is stirred manually in a container with a stirring rod, which is prone to uneven mixing, difficult to control the viscosity, and air bubbles in the bone cement, resulting in unsatisfactory filling of the bone cement into the vertebral body. question

Method used

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Embodiment Construction

[0014] see figure 1 , figure 2 , the bone cement mixer of the present invention includes a control box 1 with a motor inside and a stirring shaft 2 fixedly connected with the motor shaft, and also includes a injector with a Luer connector 31 at the front end and a screw cap 32 at the rear end The casing 3 and the stirring device arranged in the injector casing 3 have a through hole on the top surface of the screw cap 32, and the injector casing 3 is connected with the vacuum device 5 through the Luer connector 31 at the front end.

[0015] In the above-mentioned bone cement mixer, the mixing device includes a push rod 41 with a rubber plug 43 at the front end and a blade fixing seat 42 with three stirring blades 44 fixed at the front end and a through hole at the central axis. The outer wall of the rear end of 42 is provided with a ring of protrusions 46, and the inner wall of the rear end of the injector outer casing 3 is provided with a ring of notch 35, and this notch 35 ...

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Abstract

The invention relates to a bone cement stirrer comprising a control cabinet, a stirring shaft as well as an injector sleeve and a stirring device. The control cabinet is internally provided with a motor, the stirring shaft is fixedly connected with a rotating shaft of the motor, the injector sleeve is provided with a Ruhr joint at the front end and a top end opening blind nut at the rear end, thestirring device is arranged in the injector sleeve, the rear end of the stirring device is dismountably connected with the end part of the stirring shaft, and the injector sleeve is connected with a vacuumizing device through the Ruhr joint at the front end. The bone cement stirrer of the invention finishes stirring bone cement under vacuum condition, enables the bone cement to reach favorable properties through uniform stirring and ensures that the stirred bone cement has favorable biomechanical performance so as to achieve more ideal filling effect.

Description

technical field [0001] The invention relates to a medical appliance, in particular to a bone cement mixer. Background technique [0002] Vertebral compression fracture is the most common complication in patients with osteoporosis. The previous open surgical treatment was traumatic and complicated. Percutaneous vertebroplasty (PVP) and percutaneous kyphoplasty (PKP) are a new type of minimally invasive surgery that has developed rapidly in spinal surgery in recent years. The mechanical stability of the diseased vertebral body is enhanced by expanding the balloon and then injecting bone cement, artificial bone and other fillers. Clinical application has confirmed its stable, reliable, rapid and effective therapeutic effect with few complications. [0003] Usually, the bone cement is stirred manually in a container with a stirring rod, which is prone to uneven mixing, difficult to control the viscosity, and air bubbles in the bone cement, resulting in unsatisfactory filling of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28C5/46
CPCA61B2017/8838A61B17/8827
Inventor 梁栋科宋媛李涛徐建海张振东王建明赵燕
Owner SHANGHAI KINDLY MEDICAL INSTR CO LTD
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