Gas-liquid two-phase intramedullary nail
An intramedullary nail and liquid technology, applied in the field of intramedullary nails, can solve the problems of local soft tissue damage, affect the removal of the intramedullary nail, increase the difficulty of removing the intramedullary nail, etc., and achieve the effect of small size and simple operation.
Inactive Publication Date: 2011-03-30
张英泽
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Problems solved by technology
After the fracture heals, most intramedullary nails need to be removed, and patients often need to undergo a second operation, causing damage to the local soft tissue; after the fracture heals, the bone in the medullary cavity often grows into the main nail hole of the intramedullary nail, which increases the need for removal of the intramedullary nail. Difficulty; in addition, the filling effect of bone growth in the medullary cavity will also affect the removal of the intramedullary nail
Method used
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Embodiment Construction
[0014] Shown in the figure, the present invention is a kind of bar-shaped air and liquid bag 1 that is made by high-strength macromolecule polymer, and its integral sealing is connected with the connecting pipe 2 that fills gas and liquid at one end, and connecting pipe 2 There is a valve, which can be filled with gas or liquid in the gas and liquid bag 1 .
[0015] The 50-700mm of the strip-shaped air and liquid capsule 1 is 5-50mm in diameter. The outer layer of the strip-shaped gas and liquid bag 1 is coated with an X-ray-impermeable coating, or the liquid filled with the strip-shaped gas and liquid bag 1 is mixed with an X-ray contrast agent, so that X-rays can be performed during the operation. Observe or shoot the line image, observe and adjust its position and expansion degree.
[0016] The usage method of the present invention:
[0017] When treating long bone 3 diaphysis fractures, the skin is cut in sequence according to the conventional intramedullary nailing ...
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Abstract
The invention discloses a gas-liquid two-phase intramedullary nail, belongs to the technical field of orthopaedic medical equipment, and is used for fixture of long bone fractures. The technical scheme is that: the gas-liquid two-phase intramedullary nail is a strip gas-liquid bladder, is made of high-strength high polymer and is wholly sealed; a connecting pipe for filling gas and liquid is connected with one end of the bladder; a valve is arranged on the connecting pipe; and the length of the strip gas-liquid bladder is 50 to 700mm and the diameter is 5 t0 50mm. The invention has the advantages that: a minimally invasive surgery is finished, the operation is simple, and the intramedullary nail can provide axial motion, stimulates fracture healing and is convenient to take out. The gas-liquid two-phase intramedullary nail replaces the traditional rigid metal intramedullary nails by a flexible gas-liquid bladder, is pioneering work which breaks through normal thinking, overcomes defects of stress shielding, multiple operations, easy infection, difficulty in taking the intramedullary nails out and the like for treating the long bone fractures in the prior art, achieves unexpected good effects and is worth popularization.
Description
technical field [0001] The invention relates to an intramedullary nail used for orthopedic treatment of long bone fractures, and belongs to the technical field of orthopedic medical devices. Background technique [0002] Human long bone fracture is a common disease in orthopedic medicine. In clinical treatment, intramedullary nails are usually inserted into the medullary cavity of the bone to connect and fix the fracture ends. Intramedullary nailing is a medical device for treating long bone fractures of limbs. However, due to its own rigid structure, during the insertion of the intramedullary nail, there is compression on the soft tissue and bone tissue near the incision, causing a certain degree of damage, and may Due to excessive stress concentration, the main nail is bent, broken, and the screw is broken. With the progress and development of treatment technology, technicians have designed a variety of improved intramedullary nails, such as interlocking intramedullar...
Claims
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IPC IPC(8): A61B17/72A61L31/04A61L31/08A61L31/18A61L31/14
Inventor 张奇陈伟李明张英泽
Owner 张英泽