Safety blood collection assembly with indicator

A blood collection assembly, comprising:

• a housing, comprising a flash chamber, the housing having a distal end and a proximal end engageable with a specimen collection container;
• a cannula having a patient end, a non-patient end, and a sidewall extending therebetween defining a cannula interior, the patient end of the cannula projecting at least partially from the distal end of the housing, the cannula interior in fluid communication with the flash chamber;
• and
• a shield including an engagement member connecting the shield to the housing and at least one depending arm having a locking structure associated therewith, wherein the locking structure comprises at least one inwardly angled restraint and is disposed at a location on the shield that is distal from the engagement member, the shield being transitionable from a first position to a second position with respect to the housing,
• wherein the flash chamber includes a top surface which is free from obstructions on the flash chamber and is visible when the shield is in the first position, and wherein, in the second position, the shield is disposed over the patient end of the cannula and the locking structure engages at least one ledge located at the distal end of the housing to lock the shield in the second position, the engagement of the locking structure and the at least one ledge being distal to the engagement member.

A needle assembly, comprising:

• a housing, comprising a front hub portion and a rear hub portion with a flash chamber defined therebetween, the housing having a distal end, and a proximal end engageable with a specimen collection container;
• a cannula having a patient end, a non-patient end, and a sidewall extending therebetween defining a cannula interior, the patient end of the cannula projecting at least partially from the distal end of the housing, the cannula interior in fluid communication with the flash chamber, the cannula including a bevel having an angled surface;
• and
• a shield engaged with a portion of the housing, the shield including an angled surface, wherein the angled surface of the bevel and the angled surface of the shield are in alignment with a longitudinal axis of the cannula when the shield is in a first position to assist in the orientation of the cannula with respect to the patient during use.