Needle device

• US 5,376,082 A
• Filed: 05/03/1993
• Issued: 12/27/1994
• Est. Priority Date: 11/05/1991
• Status: Expired due to Fees

• Current Assignee: David Y. Phelps
• Original Assignee: David Y. Phelps
• Inventors: Phelps, David Y.
• Primary Examiner(s): Hirsch, Paul J.
• Application Number:
  US08/057,354
• Time in Patent Office: 603 Days
• Field of Search: 604/158, 604/256, 604/248, 604/249, 604/284, 604/246
• US Class Current: 604/248
• CPC Class Codes: A61B 17/3401 Puncturing needles for the peridural or subarachnoid space or the plexus, e.g. for anaesthesia local anaesthesia A61M19/00
• CPC Class Codes: A61B 17/3474 Insufflating needles, e.g. Veress needles
• CPC Class Codes: A61B 17/3494 with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors for the peridural space A61B17/3401
• CPC Class Codes: A61B 17/3496 Protecting sleeves or inner probes; Retractable tips for protecting body piercing guide needles A61M25/0612
• CPC Class Codes: A61B 2017/00115 with audible or visual output with imaging means A61B90/37, A61B34/20
• CPC Class Codes: A61M 25/0606 "Over-the-needle" catheter assemblies, e.g. I.V. catheters
• 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• CPC Class Codes: A61M 25/0631 having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle

Abstract

A needle device for the delivery of medicaments, insuflation or other medical devices, having a reciprocable needle sensitive to lack of resistance, whereupon such needle retracts, permitting a cannula therewith to provide access to the penetrated body.

Claims

1. A needle device for the delivery of medical devices, insuflation or medicaments, comprising:

a housing;

a reciprocable hollow needle arranged in a cannula, said cannula attached to the distal end of said housing;

a valve arrangement disposed about said hollow needle at the proximal end of said cannula, arranged to be closable upon the retraction of said reciprocable hollow needle from said cannula; and

an arrangement of compressable and releasable springs disposed within said housing and attached to said hollow needle so as to bias said hollow needle therefrom.

2. A needle device as recited in claim 1, including a detent assembly to actuate retraction of said hollow needle within said cannula upon a decrease in pressure upon said hollow needle as it is being advanced into a space or potential space.

3. A needle device as recited in claim 1, wherein said valve arrangement comprises a base and a cap connectively associated about said hollow needle at the proximal end of said cannula.

4. A needle device as recited in claim 3, wherein said cap is matingly engaged to the distal end of said housing, said cap and said base and said needle being in coaxial alignment.

5. A needle device as recited in claim 3, wherein said cap is rotatable with respect to said base to effectuate closing of said valve after said needle has been withdrawn therefrom.

6. A needle device as recited in claim 5, wherein a valve member is pivotable from a first open position about a central bore in said base and a second closed position covering said central bore in said base.

7. A needle device as recited in claim 6, wherein said cap and said valve member are engaged so as to effectuate pivoting of said valve member about a pivot axis when said cap is rotated with respect to said base.

8. A needle device for delivery of medical devices, insuflation, or medicaments, comprising:

a housing;

a reciprocable hollow needle having a proximal end and a distal end with a lumen therebetween, said proximal end secured within said housing;

a cannula having a bore containing said needle, said cannula having a proximal end and a distal end, said cannula having a valve arrangement on its proximal end, said proximal end being attached to the distal end of said housing;

said valve arrangement having a valve means pivotably disposed between an open position in coaxial alignment with said bore of said cannula and a closed position wherein said valve member closes off said bore of said cannula; and

a cap and a base are arranged at the proximal end of said cannula, each having a bore therethrough in alignment with said bore therein, whereby rotation of said cap with respect to said base after said needle is withdrawn from said cannula, effectuates pivotal motion of said valve to close off said bore.

9. A needle device as recited in claim 8, wherein said housing has means for retracting said needle into said housing;

and

an indicator means on the proximal end of said housing to visually signal the retraction of said needle with respect to said cannula and said housing, to indicate the sensing of a void into which said device has been advanced.

10. A needle device for accessing an internal body space, comprising:

an elongated housing having a distal and a proximal end;

a cannula arranged on the distal end of said housing;

a needle reciprocably movable within said housing and said cannula, and retractable from said cannula;

a hub arranged at the proximal end of said cannula by which said cannula is attached to said housing, said hub having a bore extending therethrough, and into said cannula, for receipt of said needle therethrough;

a valve for opening and closing the proximal end of the bore of said cannula when said needle is withdrawn therefrom; and

wherein said hub is comprised of a cap and a base which are coaxial with one another and are rotatable with respect to one another, which rotation effects a pivoting of a valve across said bore in the absence of a needle therein.

11. A needle device as recited in claim 10, wherein said valve comprises a valve member pivotable on a disc of said base, said valve member having means to engage with said cap and pivot in response to rotation thereof.

12. A needle device as recited in claim 11, wherein said housing has a carriage extending therethrough, said carriage having a longitudinally extending bore therethrough to permit the passage of an optical device or medicaments through said housing while said housing is still attached to said cannula.

13. A needle device as recited in claim 12, wherein said base has a side valve arranged in therein, with a conduit in fluid comminication with said bore in said needle to permit insuflation of a patient attached thereto.

14. A needle device as recited in claim 10, wherein said valve is openable by the pushing of a needle therethrough.