Disposable needle cartridges having absorbing contaminant barriers

摘要

Disclosed herein are unique needle cartridges for use with transdermal microneedling devices, and prevent backflow of liquid(s) from the skin of a patient. One embodiment may comprise a base portion and a sleeve coupled to the base portion. The needle cartridge may also comprise a needle unit disposed at the distal end of the base portion and within the sleeve, wherein the needle unit comprises at least one needle ending therefrom. Also, the needle cartridge comprises a drive shaft disposed through the base portion and coupled to the needle unit, and configured to be driven reciprocally along a longitudinal axis of the base portion and thereby move the needle unit reciprocally such that the needles of the needle unit extend beyond and retract within the sleeve. Such needle cartridges would include an absorbing barrier disposed within the base portion to prevent the backflow of liquid(s) from the needle unit by absorbing such liquid(s).

主权项

1. A needle cartridge for use with a transdermal microneedling apparatus, the needle cartridge comprising:
a base portion having a proximal end proximate to the apparatus, and having a distal end opposite its proximal end; a sleeve having a proximal end coupled to the distal end of the base portion, and having a distal end opposite its proximal end; a needle unit disposed at the distal end of the base portion and within the sleeve, the needle unit comprising at least one needle extending therefrom towards the distal end of the sleeve; a drive shaft disposed through the base portion and coupled to the needle unit, the drive shaft configured to be driven reciprocally along a longitudinal axis of the base portion by a drive system of the apparatus, and thereby move the needle unit reciprocally along the longitudinal axis of the base portion such that the at least one needle of the needle unit extends beyond and retracts within the distal end of the sleeve; and an absorbing barrier disposed within the base portion and configured to prevent the backflow of liquid from the needle unit through the base portion during use of the apparatus, wherein the absorbing barrier comprises at least one absorbing member having an outer dimension in contact with an interior surface of the base portion.