A kind of hand-held direct numerical digit imaging sensing device of tool sheath, holds handle comprising an engagement, is equipped with grip part, occlusion portion and supporting part, and what supporting part surface is equipped with an at least public access seaming element； Group connects a sheath with accommodating chamber in above-mentioned public access seaming element, is installed in above-mentioned accommodating chamber and connects numerical digit imaging inductor always, and the above-mentioned jacket outer surface of what is equipped with female conjugative component corresponding with public access seaming element. This creation utilizes the conjugative component of inserted type, make sheath can group connect what engagement hold handle end, direct numerical digit imaging inductor is arranged among the sheath of what soft materials again, to slow down the discomfort that sufferer keeps in the mouth inductor, and Hou can used directly to abandon sheath or disinfection sheath, achieve the purpose that health care safety.一種具護套的手持直接數位顯像感應裝置，包含一接合承柄，設有握持部、咬合部及承載部，且於承載部表面設有至少一公接合組件；上述公接合組件上組接一具有收容腔的護套，上述收容腔內容設一直接數位顯像感應器，並於上述護套外表面上設有與公接合組件對應的母接合組件。本創作利用嵌合式的接合組件，使護套可組接於接合承柄末端，再將直接數位顯像感應器套設於軟性材質的護套之中，以減緩病患將感應器含在口中的不舒適感，並可在使用過後直接拋棄護套或消毒護套，達到醫療衛生安全的目的。
