DISPOSABLE GUIDE WIRE

• US 3,789,841 A
• Filed: 09/15/1971
• Issued: 02/05/1974
• Est. Priority Date: 09/15/1971
• Status: Expired due to Term

• Current Assignee: William T. Antoshkiw
• Original Assignee: William T. Antoshkiw
• Inventors: Antoshkiw, William T.
• Primary Examiner(s): Laudenslager, Lucie H.
• Application Number:
  US05/180,810
• Time in Patent Office: 874 Days
• Field of Search: 128/2.5R,DIG.9,341,348
• US Class Current: 600/585
• CPC Class Codes: A61M 2025/09083 having a coil around a core
• CPC Class Codes: A61M 25/09033 with fixed mandrils, e.g. mandrils fixed to tip; Tensionable wires

Abstract

A stainless steel core wire has a tapered portion at one end and a portion of uniform thickness at another end. A Teflon jacket encloses the portion having uniform thickness to form a proximal end and a flexible stainless steel spring encloses the tapered portion forming a distal end. The spring is secured at both ends to the stainless steel core wire.

Claims

1. A flexible guide wire, comprising:

an elongated inner core wire having a proximal portion and a distal portion;

a coil spring enclosing the distal portion and fixably attached thereto the coil spring including a proximal end and distal end; and

a plastic jacket enclosing and engaging the proximal portion the jacket including a proximal end and a distal end, the jacket distal end terminating at the coil spring proximal end and being substantially equal in diameter to the coil spring such that the jacket forms an extension of the coil spring.

2. A guide wire as described in claim 1, wherein the proximal portion is of uniform diameter.

3. A guide wire as described in claim 1, wherein the coil spring is attached to the inner core wire at both ends of the distal portion.

4. A guide wire as described in claim 1, wherein the inner core wire is made of stainless steel.

5. A guide wire as described in claim 1, wherein the coil spring is made of stainless steel.

6. A flexible guide wire, comprising:

an elongated inner core wire having a proximal portion and a tapered distal portion;

a coil spring enclosing the distal portion and fixably attached thereto; and

a plastic jacket enclosing and engaging the proximal portion.

7. A flexible guide wire, comprising:

an elongated inner core wire having a proximal portion and a distal portion the proximal portion of the inner core wire being of uniform diameter and the distal portion is tapered;

a coil spring enclosing the distal portion and fixably attached thereto; and

a plastic jacket enclosing and engaging the proximal portion.

8. A guide wire as described in claim 7, wherein the coil spring is attached to the inner core wire at both ends of the distal portion.

9. A guide wire as described in claim 8, wherein the inner core wire and the coil spring are formed of stainless steel.

10. A guide wire as described in claim 9, wherein the coil spring is attached to the inner core wire by soldering and the solder forms a distal tip at one end of the coil spring.