Systems for isolation of a needle-based infusion set

• US 9,248,234 B2
• Filed: 09/09/2011
• Issued: 02/02/2016
• Est. Priority Date: 09/10/2010
• Status: Active Grant

• Current Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Original Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Inventors: Barron, William R.
• Primary Examiner(s): Desanto, Matthew F
• Application Number:
  US13/229,573
• Publication Number:
  US 20120065587A1
• Time in Patent Office: 1,607 Days
• Field of Search: 604172-177, 604/163, 604/263, 604192-198, 604/167.01, 604/256
• US Class Current: 1/1
• CPC Class Codes: A61M 2005/1581 Right-angle needle-type devices
• CPC Class Codes: A61M 2005/325 Means obstructing the needle passage at distal end of a needle protection sleeve
• CPC Class Codes: A61M 2005/3256 having folding ring sections
• CPC Class Codes: A61M 2039/0205 for injecting media
• CPC Class Codes: A61M 39/0208 Subcutaneous access sites for injecting or removing fluids transcutaneous access sites A61M39/0247; implantable infusion devices A61M5/14276
• CPC Class Codes: A61M 5/158 Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
• CPC Class Codes: A61M 5/1626 Needle protectors therefor in combination with syringes A61M5/3202; protectors for sharps A61B50/3001
• CPC Class Codes: A61M 5/3245 Constructional features thereof, e.g. to improve manipulation or functioning
• CPC Class Codes: A61M 5/3275 being connected to the needle hub or syringe by radially deflectable members, e.g. longitudinal slats, cords or bands

Abstract

A safety needle assembly of an infusion set for infusing fluids into a subcutaneously implanted access port is disclosed. The needle assembly is configured to prevent fluid/vapor escape therefrom so as to reduce or prevent fluid exposure to a clinician using the needle assembly. In one embodiment, the needle assembly comprises a handle portion including a needle extending therefrom, the needle defining a lumen for passage of a fluid therethrough. The needle assembly also includes a safety assembly defining a needle hole through which the needle initially extends. The safety assembly is selectively and axially slidable along the needle in order to shield a distal tip of the needle and prevent user contact therewith. A fluid isolation component is included in the safety assembly for isolating fluid escape from the needle to prevent exposure to a clinician.

Claims

1. An infusion set, comprising:

an extension leg including tubing;

a needle defining a lumen for passage of a fluid therethrough, the needle having an insertable portion extending from a handle, wherein the handle is designed to pass fluid between the lumen and the tubing;

a needle safety component including two extensible wings that are selectively actuatable for shielding a distal tip of the needle, each of the extensible wings comprising a first and second panel connected by a hinge; and

a fluid isolation component disposed on an inner surface of each of the first and second panels of each of the extensible wings, the fluid isolation component comprising absorbent pads sandwiching an entire length of the insertable portion of the needle between the pads when the wings are actuated to shield the distal tip of the needle, the absorbent pads configured to absorb fluid or vapor from the needle.

2. The infusion set as defined in claim 1, wherein the pads include a compliant material.

3. The infusion set as defined in claim 2, wherein the pads include foam rubber.

4. The infusion set as defined in claim 1, wherein the needle includes a proximal section perpendicular to the insertable portion.

5. The infusion set as defined in claim 4, wherein the insertable portion includes a distal section and the distal tip, the distal tip angled with respect to the distal section.

6. The infusion set as defined in claim 1, wherein the pads include activated charcoal.

7. The infusion set as defined in claim 1, further comprising a connector including a body defining a fluid pathway, wherein a slit valve is disposed in the fluid pathway.

8. The infusion set as defined in claim 1, wherein the needle includes a curved portion that is in fluid communication with the tubing.

9. The infusion set as defined in claim 1, wherein the extension leg extends in a first plane different from a second plane in which the distal tip of the needle extends.