BONE CEMENT INJECTION PUNCTURE NEEDLE

摘要

The outer needle 12 of the puncture needle 10 for injecting bone cement has a first side hole 22 in the vicinity of the distal end portion and a second side hole 24 in the vicinity of the proximal end portion. A pressure reducing passage 48 is formed between the outer needle 12 and the inner tube 17 by removing the inner needle from the outer needle 12 and instead inserting the inner tube 17 into the outer needle 12. As a result, when the bone cement is injected into the bone, gas or liquid in the bone is discharged to the outside of the body through the pressure-reducing passage 48, so that an increase in pressure in the bone is prevented. As a result, the bone cement is prevented from leaking out of the bone can do.;