Bone fetching device
A technology of tensioning device and holding device, which is applied in the field of medical devices, can solve problems such as the shape of the end of difficult bone blocks, easy complications, and damage to the donor site, and achieve the effects of accurate size, pain relief for patients, and easy operation
Inactive Publication Date: 2013-05-08
JOHNSON ELECTRIC SHENZHEN
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Problems solved by technology
[0004] However, the above method is more complicated to operate, it is difficult to control the shape of the end of the obtained bone block, and it is easy to cause damage to the donor site, increase the fusion and healing time of the surgical site and the donor site, easily cause complications, and the patient needs to bear a large burden. pain of
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[0021] The technical solutions and other beneficial effects of the present invention will be apparent through the detailed description of specific embodiments of the present invention below in conjunction with the accompanying drawings.
[0022] see Figure 1 to Figure 3 , the bone harvesting device of the present invention includes a rotating shaft 10 , a drill bit 20 driven by the rotating shaft 10 , a cutting wire 30 , a cutting wire holding device 40 , and a cutting wire tensioning device 50 .
[0023] The end of the rotating shaft 10 is fixedly connected to a base 12 (for example, the end of the rotating shaft 10 is integrally extended from the base 12 or fixed to the base 12 after being molded separately), and the rotating shaft 10 is driven to rotate by an external force. In this embodiment, the base 12 is in the shape of a disc, and the rotating shaft 10 integrally extends upward from the top surface of the base 12. The rotating shaft 10 and the base 12 are hollow stru...
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The invention relates to a bone fetching device which comprises a rotary shaft, a drill bit, a cutting line, a cutting line fixing device, a cutting line tensioning device and a positioning surface. The drill bit is driven by the rotary shaft, the cutting line can rotate along with the rotary shaft and comprises an arc-shaped cutting section and extending sections, the extending sections extend from two ends of the cutting section, the arc-shaped cutting section is fixed to the cutting line fixing device, and tail ends of the extending sections are connected to the cutting line tensioning device. When the positioning surface is abutted to a bone tissue, the arc-shaped cutting section of the cutting line is released, the extending sections of the cutting line are dragged by the cutting line tensioning device, accordingly, the radius of the cutting section is gradually reduced, and a cutting effect is realized. The bone fetching device has the advantages that bone blocks fetched by the bone fetching device are cylindrical and are precise in dimension, the bone fetching device can be operated easily and conveniently, and suffering of patients can be relieved.
Description
technical field [0001] The invention relates to a medical device, in particular to a bone-taking device. Background technique [0002] The bone defect caused by the treatment of various diseases such as trauma and inflammation is a problem often encountered in clinical practice. At present, the most commonly used method in the industry to repair bone defects is to transplant autologous bone. The so-called autologous bone transplantation refers to the removal of bone from one part of the human body and transplantation to another part. Usually, the patient needs to undergo a second operation and bear more physical trauma. [0003] At present, the more common method in the industry to obtain autograft bone is to drill into the patient's donor bone tissue with a trephine with a handle, and then use a hammer / chisel or pliers to break off the bone tissue to be harvested. [0004] However, the above method is more complicated to operate, it is difficult to control the shape of th...
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IPC IPC(8): A61B17/32A61B17/16A61B17/56
Inventor 王正钢
Owner JOHNSON ELECTRIC SHENZHEN