Needle assembly

• US 7,972,309 B2
• Filed: 01/27/2010
• Issued: 07/05/2011
• Est. Priority Date: 05/02/2002
• Status: Expired due to Fees

• Current Assignee: Becton, Dickinson & Co
• Original Assignee: Becton, Dickinson & Co
• Inventors: Crawford, Jaimeson William Maclean
• Primary Examiner(s): Sirmons; Kevin C
• Assistant Examiner(s): Schell; Laura C
• Application Number:
  US12/694,568
• Publication Number:
  US 20100168614A1
• Time in Patent Office: 524 Days
• Field of Search: 604/110, 604/164.01, 604/263, 604/161, 604/164.08, 604/170.01, 604/170.02, 604/171, 604/177, 600/576
• US Class Current: 604/164.01
• CPC Class Codes: A61B 5/15003 for venous or arterial blood
• CPC Class Codes: A61B 5/150389 Hollow piercing elements, e.g. canulas, needles, for piercing the skin
• CPC Class Codes: A61B 5/150519 Details of construction of hub, i.e. element used to attach the single-ended needle to a piercing device or sampling device
• CPC Class Codes: A61B 5/150572 Pierceable protectors, e.g. shields, caps, sleeves or films, e.g. for hygienic purposes
• CPC Class Codes: A61B 5/150641 comprising means to impede repositioning of protection sleeve from covering to uncovering position
• CPC Class Codes: A61B 5/150717 manually removed
• CPC Class Codes: A61B 5/150732 Needle holders, for instance for holding the needle by the hub, used for example with double-ended needle and pre-evacuated tube,
• CPC Class Codes: A61B 5/15074 Needle sets comprising wings, e.g. butterfly type, for ease of handling
• CPC Class Codes: A61B 5/150809 by audible feedback
• CPC Class Codes: A61B 5/150816 by tactile feedback, e.g. vibration
• CPC Class Codes: A61B 5/150916 by blocking components, e.g. piston, driving device or fluid passageway
• CPC Class Codes: A61B 5/154 Devices using pre-evacuated means
• CPC Class Codes: A61M 2005/3212 Blunting means for the sharp end of the needle

Abstract

A blood collection set including a non-patient needle assembly interconnected with an intravenous needle assembly through tubing is provided. The non-patient needle assembly includes a hub assembly adapted for mounting with a blood collection set, and an internal blunting member including a blunted tip. The non-patient needle assembly further includes an external cannula concentric with the internal blunting member and including a non-patient puncture tip adjacent the blunted tip. The external cannula is axially displaceable with respect to the hub assembly between a first retracted position in which the non-patient puncture tip extends beyond the blunted tip and a second activated position in which blunted tip extends beyond the non-patient puncture tip.

Claims

1. A non-patient safety needle assembly for mounting with a conventional intravenous blood collection set comprising:

a non-patient hub assembly having opposing first and second ends and a central opening extending through said hub assembly from said first end to said second end, said first end adapted for mounting with a blood collection set,

an internal blunting member in fixed engagement with said non-patient hub assembly and extending through said central opening of said hub assembly,

said internal blunting member having a first end concentric with said non-patient hub assembly,

a second end of said blunting member having a blunted tip and an internal lumen extending through said internal blunting member from said first end of said blunting member to said blunted tip,

an external non-patient cannula concentric with said internal blunting member and axially displaceable within said non-patient hub assembly, said external non-patient cannula including a non-patient puncture tip adjacent said blunted tip of said internal blunting member,

said external non-patient cannula adapted for axial displacement with respect to said non-patient hub assembly about said internal blunting member between a first retracted position in which said non-patient puncture tip extends beyond said blunted tip of said internal blunting member and a second activated position in which said blunted tip of said internal blunting member extends beyond said non-patient puncture tip of said external non-patient cannula, and

a sleeve extending about said non-patient puncture tip, wherein said non-patient puncture tip can be inserted into and removed from a blood collection tube having a pierceable membrane while said external non-patient cannula is in said first retracted position.

2. A non-patient safety needle assembly as in claim 1, further comprising a carriage assembly integral with said external non-patient cannula and concentric with said internal blunting member, said carriage assembly provided for slidable engagement with said non-patient hub assembly.

3. A non-patient safety needle assembly as in claim 1, further comprising a fitting for engagement with a blood collection set.

4. A non-patient safety needle assembly as in claim 3, wherein said fitting comprises a luer fitting.

5. A non-patient safety needle assembly as in claim 1, further comprising means for attaching said non-patient needle assembly to a holder capable of holding blood collection tubes.

6. A non-patient safety needle assembly as in claim 5, wherein said attaching means comprises threads extending circumferentially about said non-patient hub assembly.

7. A non-patient safety needle assembly as in claim 1, wherein said external non-patient cannula is axially displaceable between said first retracted position and said second activated position in a single axial direction.

8. A non-patient safety needle assembly as in claim 7, further comprising a locking mechanism for preventing axial displacement of said external cannula from said second activated position to said first retracted position.