China Medical
Medical

Cannulated Screw System

Cannulated Screw System

Cannulated screws are a common method of fixation used by orthopedic surgeons for multiple fracture patterns. These screws may be cannulated or "hollow" to allow them to be placed over a guidewire facilitating better alignment prior to drilling or screw insertion. The guidewire is then removed and the screw is left in place.
There are headless type and with head type, also many different sizes of cannulated screws are available 3.0,4.0,6.5,7.3.

▶▶ Cannulated Compression Screws

Cannulated Screw System Cannulated Screw System

Compared with the conventional screw thread, Double head screw thread is deeper, the spiral angle is bigger.

The proximal thread pitch is 30% smaller than the distal thread and can make effectively pressure to the fracture. Deeper and more sharp tooth design, easy to penetrate cortical bone, improve the gripping forece.

Torx head can be better controlled and prevent skidding.

Types

Diameter

Length

3.0

1/3 Thread

1/2 Thread

Stem 2mm

Thread Bottom 3mm

Diameter 2mm

14-40mm(2mm intervals)

4.0

1/3 Thread

1/2 Thread

Stem 2.9mm

Thread Bottom 4mm

Diameter 2.4mm

14-60mm(2mm intervals)

10-60mm(2mm intervals)

6.5

1/2 Thread

1/3 Thread

Full Thread

Stem 4.5mm

Thread Bottom 6.5mm

Diameter 4mm

45-100(5mm intervals)

7.3

short Thread

long Thread

Stem 5mm

Thread Bottom 7.3mm

Diameter 4.8mm

50-120mm(5mm intervals)

thread length18mm

thread length 32mm

▶▶ Cannulated Headless Compression Screws

Cannulated Screw System

When the screw is implanted, the fracture is well compressed by the thread, which will increase the stability of the fracture.

After insertion, it can keep compressing function under periodic forces.

The thread pitch, which is bigger in the head, varies from the head to the tall, so the speed of the screw head into the bone is faster than the screw tall.Thus when implanting, the threads will force the fracture surface.

Superior performance of the triangular blades makes it to implant and remove the screw easily.

Make screw tail embedded in the bone surface, it can reduce the stimulation of the soft tissue.

With the guidance of guide wire, percutaneous implantation will be more efficiency.

Both the screw head and tall has bilateral edges which can reduce the risk of hole cracking when inserting or removing the screw.

Types

Diameter

Length

3.0

Nail body 2.5mm

Nail tail 3.0mm

6-14mm(1mm intervals)

14-30mm(2mm intervals)

3.5

Nail body 3.5mm

Nail tail 3.6mm

16-30mm(2mm intervals)

4.0

Nail body 4.0mm

Nail tail 4.1mm

16-34mm(2mm intervals)

4.5

Nail body 4.5mm

Nail tail 4.7mm

20-30mm(2mm intervals)

30-50mm(5mm intervals)

5.0

Nail body 5.0mm

Nail tail 5.5mm

25-60mm(5mm intervals)

7.3

Nail body 7.0mm

Nail tail 7.3mm

60-120mm(5mm intervals)

▶▶ Products Advantages

● Titanium alloy material has better biocompatibility, and CT and MRI are compatible.

● The notch of the nail head is lower to reduce the interference to the surrounding tissue.

● Provide 1 / 3 thread, half thread and full thread design.

● Head self tapping and self drilling design, easy to operate and effectively shorten the operation time.

● Superior performance of the triangular blades makes it to implant and remove the screw easily.

● After insertion, it can keep compression function under periodic forces.

● Torx head can be better controlled and prevent skidding.

Cannulated Screw SystemCannulated Screw System

Location : No.2, 16#, ChangXing Road, Development District, Zhangjiagang City, Jiangsu Province, China, 215600 Zhangjiagang City,
Contact : inature Tao, +86 13358048801

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Cannulated Screw System

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