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 and at least one depending arm having a locking structure associated therewith, wherein said locking structure comprises at least one inwardly angled restraint, said locking structure disposed at a location distal from the engagement member, said engagement member comprising a fully-surrounded member engaged with a portion of the housing, 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 solely at a distal end of the flash chamber at a location that is distal to the engagement member engaged with a portion of the housing to lock the shield in the second position, wherein the fully-surrounded member is surrounded by at least two separate portions of the housing, wherein a first portion of the housing is c-shaped and a second portion of the housing includes a protrusion configured to engage the first portion, wherein the member is surrounded by the first and second portions of the housing, and wherein the protrusion configured to engage the first portion includes a tab member extending therefrom configured to engage the fully-surrounded member to hold the fully-surrounded member in the first portion of the housing.

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 and at least one depending arm having a locking structure associated therewith, wherein said locking structure comprises at least one inwardly angled restraint, said locking structure disposed at a location distal from the engagement member, said engagement member comprising a fully-surrounded member engaged with a portion of the housing, 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 solely at a distal end of the flash chamber at a location that is distal to the engagement member engaged with a portion of the housing to lock the shield in the second position, wherein the locking structure engages the flash chamber at a bottom side of the blood collection assembly.