Safety blood collection assembly with indicator

Patent metadata

Field	Value
Publication number	US-9687184-B2
Application number	US-201113050593-A
Country	US
Kind code	B2
Filing date	Mar 17, 2011
Priority date	Mar 7, 2007
Publication date	Jun 27, 2017
Grant date	Jun 27, 2017

Abstract

A needle assembly is disclosed. The needle assembly includes a housing having a flash chamber, and having a distal end and a proximal end engageable with a specimen collection container. The assembly includes 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 projects at least partially from the distal end of the housing, and the cannula interior is in fluid communication with the flash chamber. The assembly further includes a shield restrainably engaged with a portion of the housing and axially transitionable over the patient 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 shield, wherein at least a portion of the flash chamber is visible in the retracted position.

First claim

What is claimed is:

1. A needle assembly, comprising:
a housing having a proximal end, a distal end, and sidewall extending therebetween, the housing comprising a flash chamber and a specimen collection container holder, the specimen collection container holder adjacent the proximal end of the housing, a sidewall of the specimen collection container holder spaced a distance apart from the sidewall of the housing;
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, at least a portion of which is restrainably engaged between the sidewall of the housing and the sidewall of the specimen collection holder, the shield axially transitionable over the patient end of the cannula between a retracted position in which the patient end is exposed and an extended position in which the patient end is shielded by at least a portion of the shield, wherein at least a portion of the flash chamber is visible in the retracted position,
wherein at least one of the distal end of the housing and a proximal end of the shield comprises a barrier mechanism engageable with the other of the distal end of the housing and the proximal end of the shield wherein at least a portion of the barrier mechanism is associated with the shield and is located external to the housing when the shield is in the extended position for cooperating with a portion of the housing to prevent transition of the shield from the extended position to the retracted position and wherein the barrier mechanism associated with the shield comprises a pair of locking members and the barrier mechanism further includes an inwardly directed restraint associated with the distal end of the housing and wherein the restraint is disposed between the pair of locking members when the shield is in the extended position for preventing transition of the shield from the extended position to the retracted position.

2. The needle assembly of claim 1 , wherein the axially transitionable shield is telescoped over the patient cannula from the retracted position to the extended position.

3. The needle assembly of claim 1 , wherein the flash chamber is visible through at least a portion of the shield in the retracted position.

4. The needle assembly of claim 3 , wherein the portion of the shield, through which the flash chamber is visible, is transparent or translucent.

5. The needle assembly of claim 1 , wherein the shield at least partially surrounds the patient end of the cannula in the extended position.

6. The needle assembly of claim 1 , wherein the sidewall of the cannula defines an opening extending between the cannula interior and the flash chamber.

7. The needle assembly of claim 1 , wherein the cannula comprises at least two distinct needle portions.

8. The needle assembly of claim 7 , wherein the cannula comprises a patient needle in fluid communication with the flash chamber and a non-patient needle in fluid communication with the flash chamber.

9. The needle assembly of claim 8 , wherein the patient needle projects at least partially from the distal end of the housing, and wherein the non-patient needle extends in a substantially proximal direction from the patient needle.

10. The needle assembly of claim 1 , wherein the flash chamber is integrally formed within a portion of the housing.

11. The needle assembly of claim 1 , wherein the housing further comprises a hub supporting at least a portion of the cannula.

12. The needle assembly of claim 11 , wherein the flash chamber is integrally formed with the hub.

13. The needle assembly of claim 1 , wherein at least a shielding portion of the shield is restrainably engaged within an interior portion of the housing in the retracted position, and the shielding portion of the shield extends from the interior portion of the housing in the extended position.

14. The needle assembly of claim 13 , wherein the interior portion of the housing is circumferentially disposed about a specimen collection container receiving port defined within the housing.

15. The needle assembly of claim 14 , wherein the interior portion of the housing is co-axial with the specimen collection container receiving port.

16. A blood collection assembly, comprising:
a housing, comprising a flash chamber, having a distal end and a proximal end, and a blood collection container holder adjacent the proximal end;
a patient cannula having a cannula tip and defining a patient cannula interior, projecting at least partially from the distal end of the housing, the patient cannula interior in fluid communication with the flash chamber;
a non-patient cannula, defining a non-patient cannula interior, extending in a substantially proximal direction from the patient cannula within at least a portion of the blood collection container holder, the non-patient cannula interior in fluid communication with the flash chamber;
a shield restrainably engaged within a portion of the housing and axially transitionable over the patient cannula between a retracted position, in which the patient cannula is exposed and an extended position, in which the cannula tip is shielded by at least a portion of the shield, wherein at least a portion of the flash chamber is visible in the retracted position, and
a release element transitionable from a first position to a second position, wherein the shield moves to the extended position upon transition of the release element from the first position to the second position,
wherein at least one of the distal end of the housing and a proximal end of the shield comprises a barrier mechanism engageable with the other of the distal end of the housing and the proximal end of the shield wherein at least a portion of the barrier mechanism is associated with the shield and is located external to the housing when the shield is in the extended position for cooperating with a portion of the housing and wherein the release element is at least partially restrained by a portion of the shield to prevent transition of the shield from the extended position to the retracted position.

17. The blood collection assembly of claim 16 , further comprising a spring, wherein the shield is biased against a portion of the housing by the spring when the shield is in the retracted position.

18. The blood collection assembly of claim 17 , wherein the spring biases the shield to the extended position upon transition of the release element from the first position to the second position.

19. The blood collection assembly of claim 18 , wherein the release element is a push button.

20. A blood collection assembly, comprising:
a housing having a proximal end, a distal end, and a sidewall extending therebetween, the housing comprising a flash chamber and a blood collection container holder, the blood collection container holder adjacent the proximal end of the housing, a sidewall of the blood collection holder spaced a distance apart from the sidewall of the housing;
a patient cannula having a cannula tip and defining a patient cannula interior, projecting at least partially from the distal end of the housing, the patient cannula interior in fluid communication with the flash chamber;
a non-patient cannula, defining a non-patient cannula interior, extending in a substantially proximal direction from the patient cannula within at least a portion of the blood collect

Assignees

• Crawford Jamieson
• Ellis Robert
• Wilkinson Bradley M
• Bartfeld Benjamin
• Newby C Mark
• Tan Chee Leong Alvin
• Moh Jon
• Sim Stanley
• Chia Neville Yu Leng
• Becton Dickinson Co

Inventors

• Crawford Jamieson
• Ellis Robert
• Wilkinson Bradley M
• Bartfeld Benjamin
• Newby C Mark
• Tan Chee Leong Alvin
• Moh Jon
• Sim Stanley
• Chia Neville Yu Leng

Classifications

• A61B5/15003 Primary

  for venous or arterial blood · CPC title

• A61B17/34

  Trocars; Puncturing needles · CPC title

• A61B5/1444

  Safety means, e.g. for locking cannula (removing or disposing of used needles or syringes A61M5/3205) · CPC title

• A61B5/1422

  provided with indicating means, e.g. for vein entry · CPC title

• A61B5/154 Primary

  {Devices} using pre-evacuated means · CPC title