A kind of stirring type bone cement injector and bone cement stirring injection method
A bone cement and syringe technology, applied in the direction of the fixer, etc., can solve the problems of overall redundancy, waste of materials, prolonging the time of stirring and injection, etc., and achieve the effect of saving materials
Active Publication Date: 2021-01-19
XI AN JIAOTONG UNIV
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Problems solved by technology
The operation process will not only cause obvious waste of materials, but also cumbersome operation process, which greatly prolongs the time of mixing and injection, especially not suitable for fast-curing bone cement
In addition, such syringes usually have a complicated structural design, which makes the whole look cumbersome
Method used
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Embodiment
[0037] The stirring bone cement injector of this embodiment includes a piston part and a barrel part;
[0038] Such as Figure 1 to Figure 7 As shown, the piston components include an upper piston 1 , a lower piston 3 , a rotating pin 4 and a booster rod 2 . Such as figure 2 and image 3 As shown, one end of the upper piston is provided with an upper filter plug 11, the center of one side of the upper filter plug 11 is provided with a guide rail groove 13, and the center of the other side of the upper filter plug 11 is provided with a connecting column 12, and the end of the connecting column 12 is provided with an external thread, which is compatible with the auxiliary The internal threads of the push rod 2 are engaged with each other. Such as Figure 6 and Figure 7 As shown, the booster rod 2 is provided with a limiting groove 21 , and the limiting groove 21 plays a role of limiting the rotation pin 4 . Such as figure 2 and Figure 4 As shown, one end of the lower...
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The invention discloses a stirring type bone cement injector and a bone cement stirring and injecting method. One end of an injection bin is detachably connected with an injection connector, a sealingcap is detachably arranged at an injection port of the injection connector, a piston is arranged in an inner cavity of the injection bin, a piston rod penetrates through the other end of the injection bin, one end is connected with the piston, and the other end extends out of the injection bin; a detachable sealing structure is arranged between the piston rod and the injection bin; and a first through hole and a second through hole are formed in a first filter plug and a second filter plug of the piston respectively, and the piston rod can drive the first filter plug and the second filter plug to rotate relatively, so that the first through hole and the second through hole can communicate with each other, or the first through hole is blocked by the second filter plug, and the second through hole is blocked by the first filter plug. The stirring part and the injection part of the stirring type bone cement injector are integrated together, and the stirring type bone cement injector is simple in structure, convenient to use, capable of avoiding material exposure and saving materials and injection time and is particularly applicable to rapidly curing bone cement.
Description
technical field [0001] The invention belongs to the technical field of stirring injection devices, and in particular relates to a stirring type bone cement injector and a bone cement stirring injection method. Background technique [0002] Calcium phosphate bone cement has gradually become a popular material for repairing bone defects due to its good setting time, injectability and biological properties. During surgery, bone cement is often injected into a bone defect. During the preparation of bone cement, adequate mixing is an essential link. On the one hand, when stirring, the bone cement needs to be uniformly mixed according to a strict solid-liquid ratio. If the material is lost or mixed unevenly, the performance of the bone cement will be significantly changed and the therapeutic effect of the bone cement will be reduced. On the other hand, bone cement usually has a very short setting time, and efficient, rapid and sufficient mixing must be considered. In addition, ...
Claims
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IPC IPC(8): A61B17/88
CPCA61B17/8827A61B17/8833A61B2017/8838
Inventor 郭大刚焦清印孙立娟
Owner XI AN JIAOTONG UNIV