Blood collection tube holder safety guard

• US 5,188,119 A
• Filed: 10/29/1990
• Issued: 02/23/1993
• Est. Priority Date: 08/03/1989
• Status: Expired due to Term

• Current Assignee: Sherwood Services AG
• Original Assignee: Sherwood Medical Company (Medtronic Plc)
• Inventors: Sunderland, Richard A.
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Owens, Kerry
• Application Number:
  US07/605,208
• Time in Patent Office: 848 Days
• Field of Search: 128/760-765, 604/192, 604/198, 604/239, 604/264
• US Class Current: 600/576
• 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 5/150488 Details of construction of shaft
• CPC Class Codes: A61B 5/150526 Curved or bent needles
• 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 5/154 Devices using pre-evacuated means
• CPC Class Codes: A61M 2005/3247 Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
• CPC Class Codes: A61M 5/3269 guided by means not coaxially aligned with syringe barrel, e.g. channel-like member formed on exterior surface of syringe barrel for guiding a pushing rod connected to and displacing needle safety sheath

Abstract

A medical device particularly adapted for use with a blood collection tube including a nonlinear needle having first and second needle points wherein the first needle point is selectively protected by a movable protective shield and the second needle point is designed to pierce the stopper of an evacuated blood collection tube. The needle guard is movable axially along a portion of the nonlinear needle between a needle tip exposing retracted position and a needle covering locked extended position.

Claims

1. A medical device, comprising

an elongate nonlinear needle having a skin piercing needle point and a needle housing thereon, and

a protective shield operatively associated with said needle and adapted to be slidably movable through at least a portion of said needle housing between a retracted position wherein said needle point is exposed and an extended position wherein said needle point is protected.

2. The medical device of claim 1, wherein the device further includes a locking means thereon to lock said protective shield in the extended position wherein said protective shield encircles a portion of said needle and said needle point.

3. The medical device of claim 1, wherein said protective shield includes distal and proximal sections and said distal section is movable linearly along at least a portion of said needle between the retracted and extended positions.

4. The medical device of claim 1, wherein said needle includes first and second needle sections and said second needle section includes a second needle point thereon for piercing the stopper of a blood collection tube.

5. The medical device of claim 4, wherein said first and second sections of said needle are oriented generally parallel to and offset from each other and at least a portion of said protective shield is movable only along said first needle section to encircle said first needle section and said first needle point in the extended position.

6. A medical device, comprising

an elongate needle having a first needle section and a skin piercing first needle point, and

a protective shield having a first shield section adapted to encircle a portion of said needle and movable therealong and a second shield section adapted to be moved in a nonlinear manner with respect to said first needle section between a retracted position wherein said first needle point is exposed and an extended position wherein said first needle point is protected.

7. The medical device of claim 6, wherein said first shield section includes a means operatively positioned thereon to prevent said protective shield from being returned to the retracted position once said protective shield has been moved to the extended position.

8. The medical device of claim 6, wherein said first shield section of said protective shield moves linearly and generally coaxially along said first needle section of said needle between the retracted and extended positions.

9. The medical device of claim 6, wherein said needle is mounted in a hub member and said needle includes a second needle section extending therefrom and wherein said hub member is releasably attached to a blood collection tube holder and said second needle section extends inwardly into said blood collection tube holder to selectively pierce the stopper of a blood collection tube.

10. The medical device of claim 9, wherein said first and second needle sections are oriented generally parallel to and offset from each other and said second shield section of said protective shield is substantially nonlinearly oriented with respect to said first needle when the protective shield is in the retracted position.

11. A medical device comprising:

an elongate needle having a skin piercing needle point thereon, and

a protective shield having distal and proximal ends and a locking means on said distal end wherein said protective shield is movable between a retracted position wherein said needle point is exposed and a portion of said needle extends through said locking means and an extended position wherein said distal end of said protective shield protects said needle point.

12. The medical device of claim 11 wherein said locking means includes a needle passage and lip means thereon wherein said lip means prevents said needle point from extending through said needle passage when said protective shield is in the extended position.

13. The medical device of claim 12 wherein said needle extends through said needle passage and adjacent to said lip means when said protective shield is in the retracted position.