NEEDLE STYLET AND METHODS OF IMPLEMENTATION AND MANUFACTURE

• US 20130237958A1
• Filed: 03/07/2013
• Published: 09/12/2013
• Est. Priority Date: 03/08/2012
• Status: Abandoned Application

• Current Assignee: Spectra Medical Devices, Inc.
• Original Assignee: Anthony C. Arrigo
• Inventors: ARRIGO, Anthony C.
• Application Number:
  US13/789,299
• Publication Number:
  US 20130237958A1
• Time in Patent Office: Days
• US Class Current: 604/506
• 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: A61M 25/0102 Insertion or introduction using an inner stiffening member, e.g. stylet or push-rod
• CPC Class Codes: B21G 1/00 Making needles used for performing operations forming heads on pin-like needles B21G3/12; making U-shaped hairpins B21G7/04

Abstract

A needle apparatus and a method of implementing a needle apparatus are disclosed. The needle apparatus includes a hollow tube component including, at a first end of the hollow tube component, a pointed portion configured for piercing tissue of a patient and a needle hub disposed at a second end of the hollow tube component. The hollow tube component includes a bend disposed therein. The bend is positioned between the first and second ends of the hollow tube component. The needle apparatus also includes a stylet removably positioned in the hollow tube component. The stylet is characterized by a proximal end and a distal end. The stylet includes a stylet hub coupled to the distal end. At least a portion of the proximal end of the stylet includes a first diameter that is smaller than a second diameter of at least a portion of the distal end of the stylet.

Claims

1. A needle apparatus comprising:

a hollow tube component including, at a first end of the hollow tube component, a pointed portion configured for piercing tissue of a patient and a needle hub disposed at a second end of the hollow tube component, the hollow tube component including a bend disposed therein, the bend positioned between the first and second ends of the hollow tube component; and

a stylet removably positioned in the hollow tube component, the stylet including a proximal end, a distal end, and a stylet hub coupled to the distal end, wherein at least a portion of the proximal end of the stylet includes a first diameter that is smaller than a second diameter of at least a portion of the distal end of the stylet.

2. The apparatus of claim 1, wherein the at least the portion of the proximal end of the stylet including the first diameter has a length greater than a distance from the pointed portion of the hollow tube component to the bend.

3. The apparatus of claim 1, wherein the at least the portion of the proximal end of the stylet including the first diameter has a length of at least a distance from the pointed portion of the hollow tube component to the bend.

4. The apparatus of claim 1, wherein the second diameter corresponds to an inner diameter of the hollow tube component.

5. The apparatus of claim 1, wherein the stylet includes a pointed tip positioned at the proximal end.

6. The apparatus of claim 1, wherein the stylet is composed of stainless steel.

7. The apparatus of claim 1, wherein an inner diameter of the hollow tube component is substantially constant from the first end to the second end.

8. The apparatus of claim 1, wherein a diameter of the hollow tube component is smaller at the first end than at the second end.

9. The apparatus of claim 1, wherein the hollow tube component and the stylet are composed of the same material.

10. The apparatus of claim 1, wherein the hollow tube component and the stylet are composed of distinct materials.

11. A method of implementing a needle apparatus, the method comprising:

positioning a stylet in a tubular needle component, the stylet including a proximal end, a distal end and a stylet hub coupled to the distal end, wherein at least a portion of the proximal end of the stylet includes a first diameter that is smaller than a second diameter of at least a portion of the distal end of the stylet, the tubular needle component including, at a first end of the tubular needle component, a pointed portion configured for piercing tissue of a patient and, and a needle hub disposed at a second end of the tubular needle component, the tubular needle component including a bend disposed therein, the bend positioned between the first and second end of the tubular needle component; and

removing the stylet from the tubular needle component.

12. The method of claim 11, wherein the at least the portion of the proximal end of the stylet including the first diameter has a length greater than a distance from the pointed portion of the hollow tube component to the bend.

13. The method of claim 11, wherein the second diameter corresponds to an inner diameter of the hollow tube component.

14. The method of claim 11, wherein the stylet is composed of steel.

15. The method of claim 11, wherein an inner diameter of the hollow tube component is substantially constant from the first end to the second end.

16. The method of claim 11, wherein the hollow tube component and the stylet are composed of the same material.

17. A method of manufacturing a stylet for a needle apparatus, the method comprising:

removing material from the stylet such that at least a portion of a proximal end of the stylet includes a first diameter that is smaller than a second diameter of at least a portion of a distal end of the stylet; and

coupling a stylet hub to the distal portion of the stylet.

18. The method of claim 17, wherein the material is removed by at least one of grinding, milling, and electrical discharge machining

19. The method of claim 17, further comprising forming a pointed tip on the proximal end of the stylet.

20. The method of claim 17, wherein material is removed from the stylet such that the at least the portion of the proximal end of the stylet including the first diameter has a length greater than a distance from a pointed portion of a hollow tube of the needle apparatus to a bend in the hollow tube of the needle apparatus.