Patent ID: 11857381
Assignee: nan
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 16:
17. The method of claim 15, further including:
the first tube being internally threaded adjacent to an upper end of the first tube;
a cap selectively threadedly attachable to the first tube for closing the upper end;
a channel extending axially through the cap, the marking pen being circumferentially complementary to and positioned through the channel, such that the marking pen is frictionally attached to the cap;
a first ring attached to and positioned within the first tube proximate to the upper end;
a second ring attached to and extending radially from the upper limit of the second tube; and
the biaser comprising a spring positioned in the first tube between the first ring and the second ring, wherein the spring is configured for tensioning upon pressing of the lower limit of the second tube against the skin of the subject and for rebounding upon lifting of the marker assembly from the skin.