INTERVERTEBRAL SPACER

• Main Authors: MORI SHIGEO, HASHIMOTO MARI, NISHIMURA KENJI, SASAKI KIYOYUKI
• Format: Patent
• Language: English; Japanese
• Published: 24.06.2022
• Subjects: BANDAGES, DRESSINGS OR ABSORBENT PADS; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; FILTERS IMPLANTABLE INTO BLOOD VESSELS; FIRST-AID KITS; FOMENTATION; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PROSTHESES; TREATMENT OR PROTECTION OF EYES OR EARS

To provide an intervertebral spacer having sufficient strength against force applied from the longitudinal direction and a lateral direction, besides compressive force from the upward.SOLUTION: The intervertebral spacer includes first and second ends 2 and 3, and a skeleton structure 4 formed integrally with the first and second ends, the skeleton structure itself formed integrally, and connecting the first and second ends. The skeleton structure includes at least, four first connecting members 5a-5d for connecting four mutually-facing corners of the first and second ends, and a set of second connecting members 6 for cross-connecting the four mutually-facing corners of the first and second ends to each other in a space delimited by the first connecting members. The pair of upper-side first connecting members 5a and 5b includes a plurality of upward projections 8a at intervals apart in the longitudinal direction of the first connecting members, while the pair of lower-side first connecting members 5c and 5d includes a plurality of downward projections 8b at intervals apart in the longitudinal direction of the first connecting members.SELECTED DRAWING: Figure 1 【課題】上方からの圧縮力だけでなく、前後方向や横方向に及ぼされる力に対しても十分な強度を有する椎間スペーサーを提供する。【解決手段】第１及び第２の端部２、３と、第１及び第２の端部と一体的にかつそれ自体が一体的に形成され、第１及び第２の端部を連結する骨組み構造４を備える。骨組み構造は、少なくとも、第１及び第２の端部の互いに対向する四隅同士を連結する４本の第１の連結部材５ａ～５ｄと、第１の連結部材によって画定された空間内において、第１および第２の端部の互いに対向する四隅同士を交差状に連結する１組の第２の連結部材６を有する。上側の一対の第１の連結部材５ａ、５ｂに、複数の上向きの突起８ａが第１の連結部材の長さ方向に間隔をあけて設けられ、下側の一対の第１の連結部材５ｃ、５ｄには、複数の下向きの突起８ｂが第１の連結部材の長さ方向に間隔をあけて設けられる。【選択図】図１