Access device

• US 8,202,251 B2
• Filed: 03/13/2009
• Issued: 06/19/2012
• Est. Priority Date: 03/14/2008
• Status: Active Grant

• Current Assignee: Smiths Medical ASD, Inc. (Smiths Group International Holdings Ltd.)
• Original Assignee: Access Scientific, LLC (Smiths Group International Holdings Ltd.)
• Inventors: Bierman, Steven F., Pluth, Richard A.
• Primary Examiner(s): Lucchesi, Nicholas
• Assistant Examiner(s): BERDICHEVSKY, AARTI
• Application Number:
  US12/922,373
• Publication Number:
  US 20110009827A1
• Time in Patent Office: 1,194 Days
• Field of Search: 604/164.01, 604/164.13
• US Class Current: 604/164.13
• CPC Class Codes: A61B 17/3415 for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters A61B17/3417 takes precedence; body piercing catheter guide needles A61M25/06
• CPC Class Codes: A61M 2025/09125 Device for locking a guide wire in a fixed position with respect to the catheter or the human body
• CPC Class Codes: A61M 25/0606 "Over-the-needle" catheter assemblies, e.g. I.V. catheters
• CPC Class Codes: A61M 25/0693 Flashback chambers
• CPC Class Codes: A61M 25/09 Guide wires

Abstract

An access device places a medical article within a body space of a patient. The device has a needle that includes an elongated body and a needle hub. The device further includes a dilator and a medical article. A track can extend in a proximal direction from the dilator. The needle hub can slide along at least a portion of the track between a first position and a second position. The device can further include a locking mechanism operably disposed between the track and the needle hub so as to inhibit further axial movement of the needle in the proximal direction when the needle hub is in the second position. The device can further include a guidwire that can bend such that the guidewire can both pass through the needle hub at one end and attach to the needle hub at another end.

Claims

1. An access device for placing a medical article within a body space, comprising:

a needle having an elongated needle body with a distal end and a hub, the hub comprising a distal opening from which the needle body extends;

a guidewire having first and second ends, the guidewire extending at least partially into the needle hub at the first end and terminating at a cap at the second end, and

at least two cooperating attachment structures defined at least between the needle hub and the cap;

wherein the two cooperating attachment structures defined at least between the needle hub and the cap correspond with at least two distinct positions, such that the needle hub and the cap can engage together such that the cap can releasably attach to the needle hub in the at least two distinct positions, where the two distinct positions include a first position and a second position, where the first position is spaced apart from the second position.

2. The access device of claim 1, wherein the cap can attach to the needle hub by a screw-thread engagement.

3. The access device of claim 1, wherein the cap can attach to the needle hub by a deflecting latch engagement.

4. The access device of claim 1, wherein the cap can attach to the needle hub by a wing and slot engagement.

5. The access device of claim 1, wherein the hub comprises an L-shaped arm.

6. The access device of claim 5, wherein the L-shaped arm comprises a receptacle.

7. The access device of claim 1, further comprising a track on which the needle hub is mounted.

8. The access device of claim 7, wherein the needle hub can translate across substantially the entire length of the track while mounted.

9. An access device for placing a medical article within a body space, comprising:

a needle having an elongated needle body with a distal end and a hub, the hub comprising a distal opening from which the needle body extends; and

a guidewire having first and second ends, the guidewire extending at least partially into the needle hub at the first end and terminating at a cap at the second end,

wherein the needle hub and the cap each have cooperating structure that engage together such that the first end of the guidewire can extend only partially into the needle hub while the cap is releasably attached to a lateral side of the needle hub.

10. The access device of claim 9, wherein the cap can attach to the needle hub by a screw-thread engagement.

11. The access device of claim 9, wherein the cap can attach to the needle hub by a deflecting latch engagement.

12. The access device of claim 9, wherein the cap can attach to the needle hub by a wing and slot engagement.

13. The access device of claim 9, wherein the hub comprises an L-shaped arm.

14. The access device of claim 13, wherein the L-shaped arm comprises a receptacle.

15. The access device of claim 9, further comprising a track on which the needle hub is mounted.

16. The access device of claim 15, wherein the needle hub can translate across substantially the entire length of the track while mounted.

17. An access device for placing a medical article within a body space, comprising:

a needle having an elongated needle body with a distal end and a hub, the hub comprising a distal opening from which the needle body extends; and

a guidewire having first and second ends, the guidewire extending at least partially into the needle hub at the first end and terminating at a second end,

wherein the needle hub and the guidewire comprise a means for releasable attachment such that the first end of the guidewire can extend at least partially into the needle hub and the second end of the guidewire can releasably attach to a lateral side of the needle hub.

18. The access device of claim 17, further comprising a track on which the needle hub is mounted.

19. The access device of claim 18, wherein the needle hub can translate across substantially the entire length of the track while mounted.