Hole enlarging device for orthopedics department
A technology of orthopedics and cavity, which is applied in the field of reaming devices for orthopedics, which can solve the problems that the reaming components cannot be retracted, cannot be taken out, and the reaming device is stuck in the reaming part.
Inactive Publication Date: 2009-12-16
SPIRIT SPINE HLDG CORP
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Problems solved by technology
At present, there are two common orthopedic reaming techniques: one is to use a mechanical reaming device (for example, see US Patent No. 6,676,665) to ream the hole, but the biggest problem with this technology is: the crushed cancellous bone during reaming Fragments of (cancellous bone) often fall into the reaming device, causing the reaming device to get stuck, making the reaming component unable to be retracted (restored to its original shape), and even the entire reaming device is stuck in the reaming part and cannot be taken out; Another kind is to utilize filling type hole reaming device, such as the series products of U.S. Kyphon Company, the present invention is also filling type hole reaming device
But this device or method has many disadvantages, for example: the balloon must be connected to the nozzle, so when the liquid is poured into the high pressure, the balloon may fall off from the nozzle; moreover, in order to meet different needs, the balloon must be designed inside Restricting parts (internal restraint) or external restricting parts (external restraint), see for example the above-mentioned US Patent No. 6066154, or specially designed reaming device, such as US Patent No. 6235043, making the manufacture and use of balloon relatively tougher
Method used
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Embodiment Construction
[0036] figure 1 1 is the reaming body of the reaming device of the present invention, 2A is the connector of the reaming device of the present invention, and 11A and 12 are respectively the reaming cavity and the pipe body of the reaming body 1, and 111 is the rear end of the reaming cavity 11A The protection part is used to prevent the guide needle from piercing the reaming cavity 11A. The reaming body 1 is an integrally formed TPU (Thermal elastic Poly-Ureathane) tube, the reaming cavity is an injection-molded reaming cavity, and the reaming body 1 and the connector 2A are bonded together with instant glue.
[0037] figure 2 similar figure 1 , the labels 1, 2A, 111, 12 define all and figure 1 The same, except that 11B is a reaming cavity that is pre-expanded and partially restored to its original shape, which is different from figure 1 Reaming cavity for injection molding.
[0038] image 3 similar figure 2 , only the reaming cavity 11C does not contain a protec...
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The invention is related to a whole enlarging apparatus, in particular to a hole enlarging apparatus for orthopaedics with whole enlarging hollow. The hole enlarging apparatus for orthopaedics consists of a hole enlarging body which is a pipe with one end opening and the other end closing; and a connector combined with the opening end of the hole enlarging body. Characterized in that there is a preshaping hole enlarging hollow at the closing end or nearby, the hole enlarging body and the preshaping hole enlarging hollow are one-shot forming.
Description
technical field [0001] The invention relates to a reaming device for orthopedics, in particular to a reaming device for orthopedics with a reaming cavity. Background technique [0002] In orthopedic surgery, it is often necessary to ream the bone marrow cavity or vertebral body first. At present, there are two common orthopedic reaming techniques: one is to use a mechanical reaming device (for example, see US Patent No. 6,676,665) to ream the hole, but the biggest problem with this technology is: the crushed cancellous bone during reaming Fragments of (cancellous bone) often fall into the reaming device, causing the reaming device to get stuck, making the reaming component unable to be retracted (restored to its original shape), and even the entire reaming device is stuck in the reaming part and cannot be taken out; The other is to utilize a filling type hole reaming device, such as the series products of the U.S. Kyphon Company, and the present invention is also a filling ...
Claims
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IPC IPC(8): A61B17/56
Inventor 左适佑卢士钧
Owner SPIRIT SPINE HLDG CORP