Safety blood collection assembly with indicator
A blood collection assembly includes a housing and a cannula extending distally from the housing including a patient end, and a cannula shield removably engaged with a portion of the housing. The cannula shield is capable of shielding at least the patient end of the cannula, and includes a safety shield engagement. The assembly includes a pivoting safety shield engaged with a portion of the housing, which is transitionable from a retracted position in which the patient end of the cannula is exposed, to an extended position in which the patient end of the cannula is shielded by at least a portion of the safety shield. The safety shield includes at least one locking tab releasably engageable with the safety shield engagement, wherein the locking tab is fixedly engageable with a portion of the housing in the extended position.
1. A needle assembly, comprising:
a housing having a distal end, and a proximal end engageable with a specimen collection container;
a cannula extending distally from the housing, the cannula comprising a patient end;
a cannula shield removably engaged with a portion of the housing and capable of shielding at least the patient end of the cannula, the cannula shield comprising a safety shield engagement; and
a pivoting safety shield engaged with a portion of the housing and comprising at least one locking tab positioned distal to the engagement of the safety shield with the housing, the pivoting safety shield transitionable from a first position in which the at least one locking tab is releasably engaged with the safety shield engagement of the cannula shield to a second position in which the at least one locking tab is disengaged from the safety shield engagement and the patient end of the cannula is exposed, to a third position in which the patient end of the cannula is shielded by at least a portion of the safety shield and the at least one locking tab is fixedly locked with a portion of the housing distal to the engagement of the safety shield with the housing.
2. The needle assembly of claim 1 , wherein the safety shield is transitionable from a restrained position in which the at least one locking tab is engaged with the safety shield engagement, to the retracted position.
3. The needle assembly of claim 1 , wherein removal of the cannula shield from the housing allows for transition of the pivoting safety shield from the second position to the third position.
4. The needle assembly of claim 1 , wherein the housing further comprises a flash indicator, and a cannula interior is provided in fluid communication with the flash indicator, the flash indicator visible in the second position and wherein the pivoting safety shield is disposed over the patient end of the cannula and the at least one locking tab engages at least a portion of the flash indicator in the third position.
5. The needle assembly of claim 1 , wherein the housing further comprises a flash indicator, and a cannula interior is provided in fluid communication with the flash indicator, the flash indicator visible in the second position and wherein the pivoting safety shield is disposed over the patient end of the cannula and the at least one locking tab engages a portion of the housing distal to the flash indicator in the third position.
6. The needle-assembly of claim 1 , wherein the safety shield engagement is a single ridge projecting from an outer surface of the cannula shield.
7. The needle assembly of claim 1 , wherein the safety shield engagement is a ridge comprising a beveled edge projecting from an outer surface of the cannula shield and the at least one locking tab comprises an engagement surface corresponding to the beveled edge to provide a resistance interference therebetween.
8. The needle assembly of claim 7 , wherein the at least one locking tab comprises a beveled edge and the ridge comprises an engagement surface corresponding to the beveled edge to provide a resistance interference therebetween.
9. The needle assembly of claim 1 , wherein the safety shield engagement is a ridge projecting from an outer surface of the cannula and at least a portion of the ridge is engageable with at least a portion of the at least one locking tab in a detent arrangement to restrain the pivoting safety shield with the cannula shield.
10. The needle assembly of claim 9 , wherein the detent arrangement is adapted to resist disengagement until a force is imparted to the pivoting safety shield in a manner capable of moving the pivoting safety shield from the first position to the second position.
11. The needle assembly of claim 9 , wherein the detent arrangement resists unintentional removal of the cannula shield from the housing.
12. The needle assembly of claim 9 , wherein release of the detent arrangement allows the pivoting safety shield to pivot from the first position to the second position.
13. The needle assembly of claim 1 , wherein the safety shield engagement is configured to prevent removal of the cannula shield from the cannula until a pivoting force is applied to the safety shield to transition the safety shield from the first position to the second position.
14. The needle assembly of claim 1 , wherein the engagement between the safety shield and the cannula shield is configured to prevent unintentional removal of the cannula shield from the needle assembly when frictional resistance between the cannula shield and the housing has been weakened.
15. A needle assembly, comprising:
a housing, having a distal end, and a proximal end;
a cannula extending distally from the housing, the cannula comprising a patient end;
a pivoting safety shield engaged with a portion of the housing and having a locking tab positioned distal to the engagement of the safety shield with the housing, the safety shield transitionable over the cannula from a retracted position in which the patient end is exposed, to an extended position in which the patient end is shielded by at least a portion of the safety shield and the locking tab fixedly locks with a portion of the housing distal to the engagement of the safety shield with the housing; and
a cannula shield releasably engaged with a portion of the housing and shielding at least the patient end of the cannula, wherein the cannula shield comprises a safety shield engagement, the locking tab releasably engaged with the safety shield engagement to form a lock.
16. The needle assembly of claim 15 , wherein the safety shield engagement is a single ridge projecting from an outer surface of the cannula shield and extending along at least a portion of a longitudinal axis of the cannula shield.
17. The needle assembly of claim 15 , wherein the safety shield engagement is a ridge projecting from an outer surface of the cannula shield and extending along at least a portion of a longitudinal axis of the cannula shield and wherein the locking tab is adapted to releasably engage the ridge.
18. The needle assembly of claim 17 , wherein the ridge comprises a beveled edge and the locking tab comprises an engagement surface corresponding to the beveled edge to provide a resistance interference therebetween.
19. The needle assembly of claim 15 , wherein the housing further comprises a flash indicator, and a cannula interior is provided in fluid communication with the flash indicator.
20. The needle assembly of claim 15 , wherein the safety shield engagement is configured to prevent removal of the cannula shield from the cannula until a pivoting force is applied to the safety shield to transition the safety shield from the first position to the second position.
21. A needle assembly, comprising:
a housing having a distal end, and a proximal end engageable with a specimen collection container;
a cannula extending distally from the housing, the cannula comprising a patient end;
a cannula shield removably engaged with a portion of the housing and capable of shielding at least the patient end of the cannula, the cannula shield comprising a safety shield engagement extending upwardly from an outer surface of the cannula shield; and
a pivoting safety shield engaged with a portion of the housing and comprising at least one locking tab, the pivoting safety shield transitionable from a first position in which the at least one locking tab is releasably engaged with the safety shield engagement of the cannula shield to a second position in which the locking tab is disengaged from the safety shield engagement and the patient end of the cannula is exposed, to a third position in which the patient end of the cannula is shielded by at least a portion of the safety shield and the at least one locking tab is fixedly locked with a portion of the housing.