Hollow U-shaped nail device capable of being filled with bone cement

A bone cement and hollow technology, applied in the direction of internal bone synthesis, fixers, fastening devices, etc., can solve the problems affecting the health of patients, the risk of large bone cement leakage, etc., to reduce the risk of bone cement leakage and reduce surgery Good time and flexibility

Active Publication Date: 2011-04-20
KANGHUI MEDICAL INNOVATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But both have a greater risk of bone cement leakage, and the resulting complications seriously affect the patient's health

Method used

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  • Hollow U-shaped nail device capable of being filled with bone cement
  • Hollow U-shaped nail device capable of being filled with bone cement
  • Hollow U-shaped nail device capable of being filled with bone cement

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Embodiment Construction

[0018] Refer to attached Figure 1~4 , the hollow U-shaped nail device that can inject bone cement is composed of a hollow pedicle screw 1 , an intermediate body 2 and a connecting head 3 . The hollow pedicle screw 1 is provided with a through hole, that is, it includes a hollow inner hole 4 as an injection route for perfusing bone cement. The hollow pedicle screw 1 also includes a screw rod 5 with external threads and a There is a head 6 with a rectangular internal thread, and the head area of ​​the screw 5 is provided with a side hole 7, and the number of the side holes 7 is set to 2 to 6, and the adjacent holes of the side holes 7 are located between the The axes of the screws 5 are at an angle of 60°-180° to each other. The side hole 5 is used for directional injection of bone cement into the pedicle. The head 6 with a rectangular internal thread is provided with a cylindrical hole 8 and a Inner taper hole 9, the inner taper hole 9 is used to connect the intermediate body...

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Abstract

The invention discloses a hollow U-shaped nail device capable of being filled with bone cement, and the U-shaped nail device is an internal fixation device used in the orthopaedic surgery and is especially used in the treatments of vertebral diseases and the like caused by spinal instability, vertebral body compression fracture and osteoporosis. The hollow U-shaped nail device is composed of a hollow pedicle screw, a middle body and a connector; the hollow pedicle screw is provided with a through hole, namely contains an inner hole; the hollow pedicle screw also contains a screw stem with an external thread and a head with a rectangular internal thread; the head of the screw stem is provided with a side hole; the head with the rectangular internal thread is provided with a cylindrical hole and an inner tapered hole; the inner tapered hole is used for connecting the middle body; the middle body fits with the inner hole of the head of the hollow pedicle screw; one end of the connector is a cylindrical rod and is used to fit with the cylindrical hole of the middle body closely; and a rectangular thread fits with the head with the rectangular internal thread of the hollow pedicle screw, and the other end of the connector is provided with a standard Ruhl interface.

Description

technical field [0001] The hollow U-shaped nail device injectable bone cement of the present invention relates to an internal fixation device used in orthopedic surgery. Especially for the treatment of spinal instability, vertebral body compression fractures, vertebral body diseases caused by osteoporosis, etc. Background technique [0002] Spinal tumors or osteoporosis often lead to vertebral compression fractures, pain, etc., seriously affecting the quality of life of patients. Especially in elderly patients, organic systemic diseases often coexist. When multiple vertebral bodies are compressed and fractured, the sagittal plane of the vertebral body will be deformed, and the biomechanics of adjacent vertebral bodies will change, which will greatly increase the probability of adjacent vertebral body fractures. Such fractures can cause chronic pain, decreased mobility, decreased lung function, decreased appetite, depressed mood, dramatic increases in medical costs, and subs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/86
Inventor 杨利波山卫东王志敏王彤余强蒋庆幸丁伟王爱平蒋凯崔建培彭豪鲍益富孙协
Owner KANGHUI MEDICAL INNOVATION
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