Manual safety medical needle apparatus and methods

• US 5,951,525 A
• Filed: 02/10/1998
• Issued: 09/14/1999
• Est. Priority Date: 02/10/1998
• Status: Expired due to Fees

• Current Assignee: Specialized Cooperative Corp. (Becton, Dickinson & Co)
• Original Assignee: Specialized Health Products, Inc. (Becton, Dickinson & Co)
• Inventors: Thorne, David L., Thorne, Gale H. Jr.
• Primary Examiner(s): Buiz, Michael
• Assistant Examiner(s): PHAM, THUY D
• Application Number:
  US09/021,586
• Time in Patent Office: 581 Days
• Field of Search: 604/198, 604/192, 604/167, 604/171, 604/162, 606/222
• US Class Current: 604/198
• CPC Class Codes: A61M 2005/3247 Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
• CPC Class Codes: A61M 25/0625 with a permanent connection to the needle hub, e.g. a guiding rail, a locking mechanism or a guard advancement mechanism
• CPC Class Codes: A61M 25/0637 Butterfly or winged devices, e.g. for facilitating handling or for attachment to the skin
• 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 medical needle device comprising a mechanism for releasing a latch which holds the needle in place and manually retracting the needle and its sharpened tip into safe containment in one continuous operation. The device may be made from but a single molded part. In the case of a single molded part, the device may consist of a molded body, a medical needle and a protective tube for the needle. The device preferably comprises a pair of winged attachments for use as a medical butterfly apparatus.

Claims

1. A safety medical needle apparatus delivered for use with a medical needle in a fully extended state wherefrom the state is changed to a needle retracted safety state by activity resulting from opposing forces, such as forces applied by a single hand, said medical needle apparatus comprising:

a body comprising a distal portion, a medial portion and a proximal portion;

said proximal portion comprising a releasible catch mechanism and a needle hub comprising an axially disposed lumen;

a medical needle comprising a sharp distal tip and a proximal end securely affixed to said needle hub which is axially aligned within said lumen;

said distal portion comprising a shroud, for covering at least the sharp distal tip when the apparatus is in the retracted state, and at least one latch for said releasible catch;

said medial portion comprising a first pair of opposing legs hingeably affixed to a proximal site on said shroud, a second pair of opposing legs hingeably affixed to a distal site on said needle hub in a predisposed relation to said catch;

a pair of opposing actuators, each being hingeably affixed to a leg of the first pair and a leg of the second pair such that compressing one actuator toward the other, by a facile squeeze of a single hand, disengages the catch mechanism from the latch and retracts the hub away from the shroud; and

said pair of opposing actuators collectively comprising at least one locking member which securely affixes the apparatus in the retracted state whereby the needle tip is disposed for safety within said shroud.

2. A safety medical needle apparatus according to claim 1 wherein said body comprises but a single molded unitary part.

3. A safety medical needle apparatus according to claim 2 wherein the hub of said body comprises a catch portion hingeably affixed to a needle attachment portion such that a needle lumen in which the needle is affixed is aligned in parallel with an attachment portion receiving lumen during molding to facilitate mold design.

4. A safety medical needle apparatus according to claim 1 wherein said catch mechanism comprises a distortable material which changes when the opposing actuators are compressed to a form which releases the catch from the latch.

5. A safety medical needle apparatus according to claim 1 wherein said distal portion further comprises a pair of butterfly wings.

6. A safety medical needle apparatus according to claim 1 wherein said at least one latch comprises a hook which is firmly engaged with said needle when the needle is retracted to form a substantially rigid body to assure the needle tip is protectively and securely affixed within said shroud.

7. A safety medical needle apparatus according to claim 1 wherein said apparatus further comprises a removable protective tube disposed about said needle to provide protection for the needle and tip prior to use.

8. A method for retracting a medical needle of a safety medical needle apparatus from a needle extended state to a needle retracted safety state, comprising the steps of:

providing the medical needle apparatus comprising a body having a distal portion, a medial portion and a proximal portion;

said proximal portion comprising a releasible catch mechanism and a needle hub comprising an axially disposed lumen;

a medical needle comprising a sharp distal tip and a proximal end securely affixed to said needle hub and axially aligned within said lumen;

said distal portion comprising a shroud, for covering at least the sharp distal tip when the apparatus is in the retracted state, and at least one latch for said releasible latch;

said medial portion comprising a first pair of opposing legs hingeably affixed to a proximal site on said shroud, a second pair of opposing legs hingeably affixed to a distal site on said needle hub in a predisposed relation to said catch;

a pair of opposing actuators, each being hingeably affixed to a leg of the first pair and a leg of the second pair such that compressing one actuator toward the other, by a facile squeeze of a single hand, disengages the catch mechanism from the latch and retracts the hub away from the shroud; and

said pair of opposing actuators collectively comprising at least one locking member which securely affixes the apparatus in the retracted state whereby the needle tip is disposed for safety within said shroud;

using the apparatus in a medical procedure;

compressing the actuators toward each other until the catch mechanism disengages from the latch;

continuing to compress the actuators toward each other until the needle tip is retracted into the shroud and the at least one locking member is securely affixed in the fully retracted and locked state whereat the needle tip is disposed within the shroud and the hinged legs combine to form a substantially rigid body to preclude exposing the tip from the shroud thereafter.

9. A method according to claim 8 wherein the compressing step comprises a restricting step of compressing the actuators together with digits of one hand while otherwise attending to a patient with the other hand.

10. A method according to claim 8 wherein the continuing step comprises an additional step of substantially enclosing portions of the needle proximal to the distal tip with conforming parts of opposing legs.