Safety shield for medical needles

• US 9,358,348 B2
• Filed: 09/25/2008
• Issued: 06/07/2016
• Est. Priority Date: 06/14/2006
• Status: Active Grant

• Current Assignee: Kpr U.S., LLC (Cardinal Health, Inc.)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Weilbacher, Eugene E., Chebator, Casey
• Primary Examiner(s): Bosworth, Kami A
• Assistant Examiner(s): Engel, Matthew A
• Application Number:
  US12/237,722
• Publication Number:
  US 20090062744A1
• Time in Patent Office: 2,812 Days
• Field of Search: 604/110, 604/198
• US Class Current: 1/1
• CPC Class Codes: A61M 2005/1581 Right-angle needle-type devices
• CPC Class Codes: A61M 2005/1585 Needle inserters
• CPC Class Codes: A61M 2005/3247 Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
• CPC Class Codes: A61M 2005/3252 being extended by a member protruding laterally through a slot in the syringe barrel
• 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 5/3134 characterised by constructional features of the distal end, i.e. end closest to the tip of the needle cannula
• CPC Class Codes: A61M 5/3137 Specially designed finger grip means, e.g. for easy manipulation of the syringe rod
• CPC Class Codes: A61M 5/3202 Devices for protection of the needle before use, e.g. caps A61M5/50 takes precedence; for infusion spikes A61M5/1626; protectors for sharps A61B50/3001
• CPC Class Codes: A61M 5/3243 being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel devices for protecting guide needles in combination with catheters A61M25/0612
• CPC Class Codes: A61M 5/3271 with guiding tracks for controlled sliding of needle protective sleeve from needle exposing to needle covering position
• CPC Class Codes: A61M 5/3273 freely sliding on needle shaft without connection to syringe or needle
• CPC Class Codes: A61M 5/3287 Accessories for bringing the needle into the body; Automatic needle insertion A61M5/20, A61M5/31525 take precedence
• CPC Class Codes: A61M 5/329 characterised by features of the needle shaft
• CPC Class Codes: A61M 5/349 using adhesive bond or glues
• CPC Class Codes: A61M 5/5086 for indicating if defective, used, tampered with or unsterile

Abstract

A safety needle apparatus is provided. The safety needle apparatus includes a needle assembly including a needle mount and a needle cannula. The needle cannula defines a lumen and has a sharpened distal tip. The needle mount supports the proximal end of the needle cannula and is adapted to engage an intravenous line. The safety apparatus includes a shield positioned about the needle cannula. The needle cannula is movable in relation to the shield. The apparatus also includes a lock insert supported on the needle cannula and a locking member extending from an internal surface of the shield, wherein the locking insert and the locking member are configured to prevent movement of the needle cannula. A platform including a base member, which is configured to support the needle cannula at a substantially orthogonal orientation to the plane of a top surface of the platform and supports the shield, is included.

Claims

1. A safety needle apparatus comprising:

a needle assembly including a needle mount and a needle cannula, the needle cannula defining a lumen having a sharpened distal tip for piercing tissue, the needle mount supporting a proximal end of the needle cannula and being adapted to engage an intravenous line;

a shield positioned about the needle cannula, the needle cannula being movable in relation to the shield from an advanced position in which the distal tip of the needle cannula extends from a distal end of the shield to a retracted position in which the distal tip of the needle cannula is positioned within the shield;

a lock insert and a locking member, the lock insert being supported on one of the needle cannula and the shield and the locking member being supported on the other of the needle cannula and the shield; and

a platform spaced outwardly of and fixedly supporting the shield, the platform being positioned and configured to support the safety needle apparatus on a body of a patient, the platform including a base member which is positioned about the shield and the base member extending in a generally parallel orientation with respect to the shield and configured to support the needle cannula at a substantially orthogonal orientation in relation to a plane defined by a top surface of the platform, wherein the top surface of the platform defines a hole, and the shield is fixedly secured to the platform within the hole during use of the needle cannula for piercing tissue to prevent relative longitudinal movement between the platform and the shield;

wherein the lock insert and the locking member are configured to prevent movement of the needle cannula to the advanced position after the needle cannula has been moved to the retracted position; and

wherein the shield is not movable relative to the platform as the needle cannula moves between the advanced position and the retracted position.

2. The safety needle apparatus of claim 1, wherein the lock insert is supported on the needle cannula and the locking member extends from an internal surface of the shield.

3. The safety needle apparatus of claim 2, wherein the lock insert includes at least one resilient projection member.

4. The safety needle apparatus of claim 3, wherein the at least one resilient projection member extends radially outwardly in its normal configuration.

5. The safety needle apparatus of claim 2, wherein the locking member includes at least one protrusion having a generally annular shape and extending inwardly from an inner surface of the shield.

6. The safety needle apparatus of claim 1, wherein the lock insert is supported . . . and the locking member extends from an outer surface of the needle cannula.

7. The safety needle apparatus of claim 6, wherein the lock insert includes at least one protrusion that is movable radially outward.

8. The safety needle apparatus of claim 6, wherein the locking member is an annular tab extending in a generally orthogonal direction from the outer surface of the needle cannula.

9. The safety needle apparatus of claim 1, wherein the base member of the platform extends downward from the top surface of the platform, the base member being substantially parallel to the needle cannula.

10. The safety needle apparatus of claim 1, wherein the platform is configured to prevent the shield from contacting the body of the patient during use of the needle cannula for piercing tissue.

11. The safety needle apparatus of claim 1, wherein the shield is permanently fixed to the platform.