Problem to be solved: to provide a medical cap and a method of manufacturing the same, such as preventing the occurrence of voids due to the positional deviation of the elastic plug body and the outer frame, preventing leakage of liquid at the time of needle piercing, and superior in retaining force and restoring force to the needle removal, and the like.Cap 10 for medical purposesElastic plug bodyThe upper frame 11 supporting the peripheral portion of the elastic plug body from the upper surface 21 side and the lower frame portion 12 supported by at least the lower frame portion 12 from the lower surface 22 side, and the outer frame body 1 having at least the lower frame portion 12 supported at the lower sideLower frameAn inner wall 14 which surrounds and holds an elastic plug bodyAn outer wall 19 surrounding the inner wallUpper frameIt has an annular wall 13 for pressing the inner wall and the elastic plug in the gap between the inner wall and the outer wallThe inner wall is welded on the contact surface with the annular wall.AndThe elastic plug body is not fused, andAnnular wallIt is welded to the elastic plug in the gap of plural internal wallsAndIt is welded to the contact surface of the external wall.Diagram【課題】弾性栓体と外枠体の位置ズレによる空隙の発生を防止し、針刺し時の液漏れがなく、また針抜けに対する保持力や復元力に優れる等、密閉性の確保に優れた医療用キャップ及びその製造方法を提供する。【解決手段】医療用キャップ１０は、弾性栓体２と、弾性栓体の周縁部を上面２１側から支持する上側枠部１１及び下面２２側から支持する下側枠部１２を少なくとも備えた外枠体１と、下側枠部は、弾性栓体を複数で取り囲んで収容する内部壁１４と、内部壁を取り囲む外部壁１９と、上側枠部は、内部壁と外部壁の間隙に於いて当該内部壁及び弾性栓体を押圧する環状壁１３を有し、内部壁は環状壁との接触面で溶着し、かつ、弾性栓体とは溶着しておらず、環状壁は、複数の内部壁の間隙に於いて弾性栓体と溶着し、かつ、外部壁の接触面と溶着している。【選択図】図１
