| 主权项 |
1. A medical needle comprising:
a needle body including a needle tip on a front end of the needle body; a shaft provided on a base end of the needle body; a housing pipe including a first tube, and a second tube that is provided on a base end of the first tube, the shaft being located in the housing pipe such that the shaft is displaceable in an axial direction relative to the housing; and a lock member that includes at least one engaging unit that is releasably engaged with the shaft, and at least one engagement release unit protruding to an outside of the housing pipe through at least one side hole of the housing pipe, the lock member being fixed in the housing pipe, wherein the shaft is slidable in the housing pipe from (i) a first position at which the front end of the needle body protrudes from the housing pipe by a predetermined length and the front end of the shaft is located in the second tube to (ii) a second position at which the front end of the needle body is located in the housing pipe, wherein, when the at least one engaging unit is engaged with the shaft, the shaft is held at the first position on in housing pipe, and wherein the engagement of the at least one engaging unit with the shaft is releasable by pressing the at least one engagement release unit inward. |
