Patent Application
20120065683
a) Field of the Invention
The present invention relates to an interspinous process distraction device, and more particularly to an interspinous process distraction device which can stably support a spine and is provided with a low manufacturing cost as well as high durability.
b) Description of the Prior Art
A spine is an essential part of a human skeleton, serving as a backbone of the skeleton to support muscles and organs in an upper half of the human body and linking with a lower half.
The spine is formed by many vertebrae and an interior of each vertebra is passed through by many critical nerves. As a person gets older, the spine is aged or an accidental injury occurs, the vertebra can be injured that spacing between two adjacent vertebrae is shortened to compress the nerves, which harms the nerves and induces numbness as well as a feel of pain.
An existing conventional structure includes an adjustable interspinous process distraction device which contains a curved plate formed with an upper plate and an opposite lower plate by bending a board material. The upper plate is penetrated with a screw hole and a stud is assembled in the screw hole. A bottom end of the stud is abutted at the lower plate and by tightening the stud at the lower plate, a distance between the upper plate and the lower plate can be changed, thereby providing a stable support to the vertebrae.
However, for the aforementioned distraction device which uses the stud and the screw hole, the structures are too complicated and an upper and lower vertebra of a patient can be easily lack of an elastic movement after using the stud, which results in a too high cost of the distraction device. In addition, there is also an issue of inferior applicability.
Accordingly, the primary object of the present invention is to provide an interspinous process distraction device which can stably support a spine, and is provided with a low cost as well as high durability.
To achieve the aforementioned object, the interspinous process distraction device of the present invention, includes a curved plate which is formed with an upper plate and an opposite lower plate, with the upper plate being penetrated with two upper wire holes and the lower plate being penetrated with two lower wire holes; an upper fixing wire, two ends of which penetrate respectively from bottom to top the two upper wire holes of the upper plate to be tied on a spinous process; and a lower fixing wire, two ends of which penetrate respectively from top to bottom the two lower wire holes of the lower plate to be tied on the spinous process.
For the aforementioned adjustable interspinous process distraction device, end parts and opposite exterior sides of the upper and lower plates are separated and protruded respectively with two upper clamp pieces and a lower clamp piece to be clamped on the spinous processes.
For the aforementioned adjustable interspinous process distraction device, the exterior sides of the upper and lower plates are formed with inverted hooks.
Two ends of the aforementioned upper fixing wire are sheathed with a wire sleeve and two ends of the lower fixing wire are sheathed with a wire sleeve.
The adjustable interspinous process distraction device of the present invention is at least provided with following advantages and functional improvements:
To enable a further understanding of the said objectives and the technological methods of the invention herein, the brief description of the drawings below is followed by the detailed description of the preferred embodiments.
Referring to
The curved plate 10 is formed with an upper plate 11 and an opposite lower plate 12 by bending a board material (such as a thin metallic material). The upper plate 11 is penetrated with two upper wire holes 112, and the lower plate 12 is penetrated with two lower wire holes 122.
End parts and opposite exterior sides of the upper and lower plates 11, 12 are separated and longitudinally protruded with two upper clamp pieces 111 and a lower clamp piece 121, respectively. On the other hand, the opposite exterior sides of the upper and lower plates 11, 12 can be formed with inverted hooks 113, 123, with teeth of the inverted hooks 113, 123 facing toward the end parts of the upper and lower plates 11, 12.
The upper fixing wire 20 can be a metallic wire and its two ends penetrate from bottom to top the two upper wire holes 112 of the upper plate 11 to be tied on a spinous process 91 of a vertebra 90.
The lower fixing wire 30 can be a metallic wire and its two ends penetrate from top to bottom the two lower wire holes 122 of the lower plate 12 to be tied on the spinous process 91 of the vertebra 90.
Referring to
In a preferred embodiment of the present invention, two ends of the upper fixing wire 20 and the lower fixing wire 30 are sheathed respectively with a wire sleeve 21, 31 to fix the two ends, thereby preventing the upper fixing wire 20 or the lower fixing wire 30 from getting released.
The adjustable interspinous process distraction device provided by the present invention is at least provided with following advantages and functional improvements:
It is of course to be understood that the embodiments described herein is merely illustrative of the principles of the invention and that a wide variety of modifications thereto may be effected by persons skilled in the art without departing from the spirit and scope of the invention as set forth in the following claims.
