Blood collection tube holder safety guard

• US 5,000,167 A
• Filed: 08/03/1989
• Issued: 03/19/1991
• 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): Hafer, Robert A.
• Assistant Examiner(s): Owens, Kerry
• Application Number:
  US07/389,018
• Time in Patent Office: 593 Days
• Field of Search: 128/760-766, 604/192, 604/403, 604/411-415, 604/195-200
• 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 adpated 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 and nonlinear needle having a skin piercing needle point on one end thereof,

a protective shield operatively associated with at least a portion of said needle and adapted to be slidable along at least a portion of said needle between a needle point exposing position and a needle point protecting position wherein more of said protective shield protects said needle in the needle point protecting position than in the needle point exposing position.

2. 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.

3. The medical device of claim 1, wherein said needle includes first and second needle sections which are oriented generally parallel to each other and wherein said protective shield includes a distal shield section which is movable linearly along at least a portion of said first needle section.

4. The medical device of claim 3, wherein said needle further includes an intermediate needle section wherein said intermediate needle section is nonlinearly oriented with respect to the orientation of said first and second needle sections.

5. A medical device, comprising

an elongate nonlinear needle having distal and proximal ends and first and second needle sections and a skin piercing first needle point on said distal end of said first needle section,

a protective shield operatively associated with said needle and adapted to be movable between a first needle point exposing position and a first needle point protecting position wherein at least a portion of said protective shield protects said needle only in the first needle point protecting position,

a tube holding member which removably receives an evacuated tube having a sealed end in said tube holding member, and

said second needle section being adapted to extend into at least a portion of said tube holding member and being further adapted to penetrate the sealed end of the evacuated tube upon insertion of the evacuated tube into the tube holding member.

6. The medical device of claim 5, wherein said needle is removably attachable to said tube holding member by hub member which is adapted to releasably receive said tube holding member thereon.

7. The medical device of claim 6, wherein said first and second needle sections are oriented generally parallel to each other and said hub member encloses an intermediate needle section between said first and second needle sections.

8. A medical device comprising

an elongate needle having a distal needle point thereon and an elongate protective shield wherein one of said needle or protective shield is nonlinear with respect to the other of said needle or protective shield which is generally linear and wherein said protective shield is operatively associated with said needle and adapted to be moved between a retracted position wherein said distal needle point on said needle is exposed and an extended position wherein said distal needle point is protected and wherein more of said needle is protected by said protective shield in the extended position than in the retracted position.

9. The medical device of claim 8, wherein said needle is nonlinear and includes a first needle section with a distal portion having said distal needle point thereon and a proximal portion and said protective shield is an elongate and linear member which is oriented along said needle such that more of said protective shield extends proximally of said proximal needle portion in the retracted position than in the extended position.

10. The medical device of claim 8, wherein said protective shield is nonlinear and movable along at least a portion of said linear needle and wherein more of said protective shield extends proximally of a first needle section of said needle having said distal needle point thereon in the retracted positioned than in the extended position.

11. The medical device of claim 8, wherein a locking means is operatively associated with said protective shield to prevent the movement of said protective shield to the retracted position once said protective shield has been moved to the extended position.

12. The medical device of claim 8, wherein an elongate barrel shaped member is attachable adjacent the end of said needle opposite said distal needle point and wherein said protective shield is movable linearly along and adjacent to said barrel member as said protective shield is moved from the retracted position to the extended position.

13. The medical device of claim 8, wherein an elongate barrel shaped member is attachable adjacent the end of said needle opposite said distal needle point and wherein said protective shield is movable in a nonlinear manner with respect to the longitudinal dimension of said barrel member as said protective shield is moved from the retracted position to the extended position.

14. A medical device, comprising

a first needle section having a skin piercing first needle point thereon,

a second needle section having a stopper piercing second needle point thereon,

a hub member having said first and second needle sections mounted nonlinearly thereon, and

a protective shield slidably mounted along said hub member and adapted to be moved between a first needle point exposing position and a first needle point protecting position wherein more of said protective shield protects said needle in the needle point protecting position than in said needle point exposing position.

15. The medical device of claim 14 wherein said first and second needle sections are mounted on said needle hub in a coplanar orientation.

16. A medical device comprising

an elongate nonlinear needle having generally parallel first and second needle sections,

a skin piercing first needle point on said first needle section,

a stopper piercing second needle point on said second needle section,

a hub member substantially enclosing an intermediate needle section of said needle and said intermediate needle section being positioned in fluid communication with said first and second needle sections,

a blood collection tube holder releasably attached to said hub member at a first end and having an open second end,

a blood collection tube having a stopper thereon and wherein said blood collection tube is insertable into said second end of said blood collection tube holder so that said second needle point pierces the stopper of said blood collection tube,

an elongate protective shield slidably mounted on said hub member and adapted to be movable along said hub member between a retracted position wherein said first needle point is exposed and an extended position wherein said first needle point is protected such that more of said protective shield protects said needle in the extended position than in the retracted position, and

a locking means operatively associated with said protective shield to retain said protective shield in the extended position.

17. The medical device of claim 16, wherein said protective shield has distal and proximal ends and said distal end includes at least one tab means thereon to contact said hub member when said protective shield is in the retracted position and wherein said proximal end of said protective shield is oriented adjacent said blood collection tube holder when said protective shield is in the retracted position.

18. A medical device comprising

an elongate needle having first and second needle sections and a skin piercing needle point on said first needle section,

a hub member enclosing at least a portion of said needle between said first and second needle sections,

a blood collection tube holder releasably attached to said hub member at one end and open at the other end,

a blood collection tube having a stopper thereon wherein said second needle section pierces the stopper on said blood collection tube when said blood collection tube is inserted into said other end of said blood collection tube holder, and

a protective shield slidably mounted along said hub section wherein said protective shield is movable in a nonlinear manner with respect to said first needle section between a retracted position wherein said needle point is exposed and an extended position wherein said needle point is covered and wherein at least a portion of said protective shield moves linearly along said first needle section between the retracted and extended positions and wherein more of said protective shield protects said needle in the extended position than in the retracted position.

19. A medical device, comprising

an elongate and nonlinear needle including a first needle section having distal and proximal portions with a skin piercing needle point on the distal portion thereof;

a hub member connected to at least a portion of said needle;

a protective shield slidably supported by at least a portion of said hub member, said protective shield having distal and proximal ends and being adapted to be slidably moved between a retracted position wherein said needle point is exposed and an extended position wherein said needle point is protected by said distal end of said protective shield such that more of said protective shield protects said first needle section in the extended position than in the retracted position.

20. The medical device of claim 19 wherein said proximal end of said protective shield extends proximally from said proximal portion of said first needle section in the retracted position.

21. The medical device of claim 19 wherein said hub member includes a locking means operatively associated therewith to retrain said protective shield in the extended position.

22. The medical device of claim 19 wherein said hub member includes a retaining means operatively associated therewith to releasably retain said protective shield in an initial position wherein said needle point is exposed.

23. The medical device of claim 19 wherein said protective shield is slidably supported in a passageway in said hub member and said protective shield slides linearly between the retracted and extended positions.

24. A method of obtaining a blood sample from a patient comprising

orienting a medical device having a hub member with first and second nonlinearly oriented needle sections extending from opposite ends thereof such that a first needle point on the first needle section is aligned with the blood vessel of a patient;

piercing the blood vessel of a patient with the first needle point;

inserting a tubular member on the medical device such that a second needle point on the second needle section pierces a stopper on the tubular member to obtain a blood sample from the patient therein;

withdrawing the first needle point from the blood vessel of the patient; and

moving a protective shield which is slidably mounted along the hub member from a retracted position wherein the first needle point is exposed to an extended position wherein the first needle point is protected so that more of the protective shield protects the needle in the extended position than in the retracted position.

25. The method of claim 24 further including moving the protective shield from an initial start position wherein the first needle section is substantially enclosed by the protective shield to the retracted position prior to piercing the blood vessel of the patient with the first needle point.

26. The method of claim 24 further including locking the protective shield in the extended position so that the first needle point is protected by the protective shield.