Needle tip protector

• US 7,347,838 B2
• Filed: 02/05/2005
• Issued: 03/25/2008
• Est. Priority Date: 02/13/2004
• Status: Expired due to Fees

• Current Assignee: Smiths Medical ASD, Inc. (Smiths Group International Holdings Ltd.)
• Original Assignee: Smiths Medical ASD, Inc. (Smiths Group International Holdings Ltd.)
• Inventors: Kulli, John C
• Primary Examiner(s): Sirmons; Kevin C.
• Assistant Examiner(s): Witczak; Catherine N.
• Application Number:
  US10/906,171
• Publication Number:
  US 20050182363A1
• Time in Patent Office: 1,144 Days
• Field of Search: 604/110, 604/164.01, 604/164.08, 604/192, 604/263, 604/194
• US Class Current: 604/164.08
• CPC Class Codes: A61M 2005/325 Means obstructing the needle passage at distal end of a needle protection sleeve
• 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 25/0618 having means for protecting only the distal tip of the needle, e.g. a needle guard
• CPC Class Codes: A61M 5/3273 freely sliding on needle shaft without connection to syringe or needle

Abstract

A needle tip protector (10, 10′) including a pair of apertured members (28, 30 or 28′, 30′) with spring arms (22, 24) urging the apertured members (28, 30 or 28′, 30′) out of alignment to create a barrier to a needle tip (16). A needle gripping U-shaped clip (81) may also provide a needle tip protector (80).

Claims

1. A needle tip protector comprising:

a needle having a shaft and a sharp tip end;

a support member telescoped over the needle shaft;

a pair of spring arms extending from the support in a direction toward the sharp tip end; and

a pair of apertured members each connected to a respective one of the pair of spring arms, the spring arms providing a bias to urge the apertured members out of alignment, the needle shaft extending through the apertures of the apertured members in a loaded position of the needle, such that when the needle is retracted from the loaded position to an unloaded position with the shaft removed from at least one of the apertures, the apertured members will be urged out of alignment to provide a baffier to the needle tip whereby to impede movement of the needle from the unloaded position to the loaded position, the apertured members being urged inwardly relative to each other by the spring arms.

2. The needle tip protector of claim 1, the apertured members each comprising a disc-shaped element.

3. The needle tip protector of claim 1, the apertured members each being held to extend generally transverse to the needle.

4. The needle tip protector of claim 1, each apertured member including a face confronting the other apertured member.

5. The needle tip protector of claim 1, further comprising a catheter hub receiving the apertured members, the apertured members being urged against an interior wall of the catheter hub in the loaded position of the needle such that the apertured members move away from the catheter hub interior wall when the needle is retracted from the loaded position.

6. The needle tip protector of claim 1 further comprising a housing telescoped over the needle shaft, the support being defined by a portion of the housing.

7. The needle tip protector of claim 6 further comprising needle gripping structure within the housing.

8. The needle tip protector of claim 6, wherein the needle shaft includes an irregularity, the housing having aperture sized to prevent passage of the needle shaft irregularity therethrough.

9. The needle tip protector of claim 1 wherein the needle shaft includes an irregularity, the support member defining an aperture sized to prevent passage of the needle shaft irregularity therethrough.