WINGED NEEDLE ASSEMBLY AND FRANGIBLE COVER

• US 20090187153A1
• Filed: 03/27/2009
• Published: 07/23/2009
• Est. Priority Date: 01/14/2008
• Status: Abandoned Application

• Current Assignee: Fenwal Incorporated (Fresenius SE & Co. KGaA)
• Original Assignee: Fenwal Incorporated (Fresenius SE & Co. KGaA)
• Inventors: Jones, Mark B., West, Richard L.
• Application Number:
  US12/412,626
• Publication Number:
  US 20090187153A1
• Time in Patent Office: Days
• US Class Current: 604/263
• CPC Class Codes: A61B 5/15003 for venous or arterial blood
• CPC Class Codes: A61B 5/150259 Improved gripping, e.g. with high friction pattern or projections on the housing surface or an ergonometric shape
• CPC Class Codes: A61B 5/150267 Modular design or construction, i.e. subunits are assembled separately before being joined together or the device comprises interchangeable or detachable modules
• CPC Class Codes: A61B 5/150366 Blood collection bags, e.g. connected to the patient by a catheter comprising means for removing a small sample of collected blood from the bag collection bags as such A61J1/05, A61M1/0209
• CPC Class Codes: A61B 5/150396 Specific tip design, e.g. for improved penetration characteristics
• 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 5/150549 Protectors removed by rotational movement, e.g. torsion or screwing
• CPC Class Codes: A61B 5/150587 by friction fit
• CPC Class Codes: A61B 5/150595 by snap-lock (i.e. based on axial displacement)
• CPC Class Codes: A61B 5/150618 Integrally moulded protectors, e.g. protectors simultaneously moulded together with a further component, e.g. a hub, of the piercing element
• 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 5/15074 Needle sets comprising wings, e.g. butterfly type, for ease of handling
• CPC Class Codes: A61B 5/150824 by visual feedback
• CPC Class Codes: A61B 5/153 Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
• CPC Class Codes: A61M 25/0612 Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
• CPC Class Codes: A61M 25/0637 Butterfly or winged devices, e.g. for facilitating handling or for attachment to the skin
• CPC Class Codes: A61M 5/3243 being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel devices for protecting guide needles in combination with catheters A61M25/0612

Abstract

Medical needle assemblies incorporating a needle cover are provided. According to one aspect, a medical needle assembly includes a hub portion and a pair of outwardly extending wings. The hub portion may have a raised orientation member, with the wings being foldable to overlay the raised orientation member and contact the raised orientation member and each other. Alternatively, the hub portion may have an anti-rotation member adapted to cooperate with the wings to limit rotation of the wings with respect to the hub portion.

Claims

1. A medical needle assembly comprising:

a cannula;

a base secured to the cannula; and

a needle cover comprising a hub portion adapted to be secured to the base, wherein the hub portion includes a pair of outwardly extending wings and a raised orientation member, and wherein the wings are foldable to overlay the raised orientation member and contact the raised orientation member and each other.

2. The medical needle assembly of claim 1, wherein the raised orientation member comprises a pair of guidewalls intersecting at a bevel indicator.

3. The medical needle assembly of claim 2, wherein the hub portion includes a projection aligned with the bevel indicator and extending proximally away therefrom and the base includes a channel, and wherein the projection is configured to be received by the channel when the hub portion is secured to the base.

4. The medical needle assembly of claim 3, wherein the cannula includes a beveled distal end configured to be aligned with said projection and said channel when the hub portion is secured to the base.

5. The medical needle assembly of claim 1, wherein the cross-section of the hub portion has a “

steeple”

configuration.

6. The medical needle assembly of claim 1, wherein the cannula has a central axis, the hub portion includes a bottom surface, and the bottom surface is configured at an angle with respect to said central axis when the hub portion is secured to the base.

7. A medical needle assembly comprising:

a cannula;

a base secured to the cannula; and

a needle cover comprising a hub portion adapted to be secured to the base and including

a bottom surface,

a pair of sidewalls extending from the bottom surface,

a pair of guidewalls extending toward each other from upper ends of the sidewalls,

and a pair of wings extending outwardly from said sidewalls, wherein the wings are foldable to overlay at least a portion of the guidewalls and contact the guidewalls and each other.

8. The medical needle assembly of claim 7, wherein the cross-section of the hub portion has a generally pentagonal configuration.

9. The medical needle assembly of claim 7, wherein the guidewalls intersect at a bevel indicator.

10. The medical needle assembly of claim 9, wherein the hub portion includes a projection aligned with the bevel indicator and extending proximally away therefrom and the base includes a channel, and wherein the projection is configured to be received by the channel when the hub portion is secured to the base.

11. The medical needle assembly of claim 10, wherein the cannula includes a beveled distal end configured to be aligned with said projection and said channel when the hub portion is secured to the base.

12. The medical needle assembly of claim 7, wherein the cannula has a central axis and the bottom surface of the hub portion is configured at an angle with respect to said central axis when the hub portion is secured to the base.

13. A medical needle assembly comprising:

a cannula;

a base secured to the cannula;

a winged attachment piece comprising a ring portion and a pair of wings extending from the ring portion; and

a needle cover comprising a hub portion secured to the base and including an outwardly extending anti-rotation member, wherein the ring portion is rotatably received on a portion of the hub portion and the anti-rotation member cooperates with the ring portion to limit rotation of the winged attachment piece with respect to the hub portion.

14. The medical needle assembly of claim 13, wherein the ring portion defines a groove and the anti-rotation member is at least partially received within the groove.

15. The medical needle assembly of claim 14, wherein the groove is substantially wider than the anti-rotation member.

16. The medical needle assembly of claim 14, wherein the anti-rotation member comprises a radially extending projection.

17. The medical needle assembly of claim 14, wherein the anti-rotation member is positioned at a distal section of the hub portion and the groove is positioned at a distal section of the ring portion.

18. The medical needle assembly of claim 13, wherein the cannula includes a beveled distal end aligned with said anti-rotation member.

19. The medical needle assembly of claim 13, wherein the wings are foldable to contact each other and the anti-rotation member is adapted to be pinched between the wings when the wings are in contact with each other.