Tantalum rod with extruding devices provided on sidewall and bottom

Abstract

The invention discloses a tantalum rod with extruding devices provided on the sidewall and the bottom. The outer wall of the tantalum rod is provided with grooves having a direction being same to thelength direction of the tantalum rod, and the grooves extend from the top end of the tantalum rod to the tail end of the tantalum rod; and a blind hole is arranged in the center of the tantalum rod, two elastic sheets are respectively inserted into clamping grooves in the outer surface and the inner surface of the groove, every elastic sheet is provided with a through hole, and an arc-shaped recess is arranged at the bottom of the tantalum rod. The groove is arranged in the part from the top end to the middle of the tantalum rod, broken bones can be accommodated in the groove, and the two elastic sheets are respectively inserted into the clamping grooves in the outer surface and the inner surface of the groove, so the broken bones are accommodated in the groove in advance, then the elasticsheets are inserted, the broken bones are crammed in the through holes, the elastic sheets are extruded to protrude toward the periphery of the tantalum rod in order to ensure the connection betweenthe broken bones in the groove and the sidewall of a drilled hole, and the recess at the bottom of the tantalum rod can accommodate the broken bones in contact with the bottom of the drilled hole, sothe success rate of tantalum rod treatment is improved.

Description

technical field [0001] The present invention relates to a surgical instrument. Background technique [0002] The human hip joint is a very important part. When the hip joint suffers from disease, such as joint necrosis, it is necessary to remove the necrotic tissue and fill some artificial materials into the hip joint. Most of the filling materials currently used are porous tantalum materials. During the operation, an electric drill is used to drill a hole in the hip joint, and then the necrotic joint tissue in the hole is removed, and then a tantalum rod is filled into the hole, and finally the gap is filled with healthy bone fragments and the wound is sutured. [0003] In the process of using tantalum rods for treatment, the size of the drilled hole is required to be consistent with the size of the tantalum rod. In the actual operation process, the diameter and depth of the drilled hole are larger than the tantalum rod, which will cause the bottom of the tantalum rod The...

AI Technical Summary

Problems solved by technology

[0003] In the process of using tantalum rods for treatment, the size of the drilled hole is required to be consistent with the size of the tantalum rod. In the actual operation process, the diameter and depth of the drilled hole are larger than the tantalum rod, which will cause the bottom of the tantalum rod The end and the bottom of the drill hole cannot be in contact. After the tantalum rod is implanted, it cannot exert the osteoinductive effect, resulting in the failure of the treatment.

[0004] At the same time, during the implantation process, the tantalum rods need to withstand a large force, and some tantalum rods will be twisted or broken when the bone is finally filled.

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