Assembly of wire inserter and lock for a medical wire

• US 4,860,742 A
• Filed: 05/16/1988
• Issued: 08/29/1989
• Est. Priority Date: 05/16/1988
• Status: Expired due to Term

• Current Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Original Assignee: Medical Innovations Corporation (Kimberly-Clark Corporation)
• Inventors: Fishman, Udi, Park, Harry
• Primary Examiner(s): Pellegrino, Stephen C.
• Application Number:
  US07/193,945
• Time in Patent Office: 470 Days
• Field of Search: 128/772, 128/303, 128/657, 604/164, 604/159, 226/127, 226/130
• US Class Current: 606/108
• CPC Class Codes: A61B 17/3403 Needle locating or guiding means guides for suture needles A61B17/0482; guiding or tracking by nuclear magnetic resonance G01R33/285
• CPC Class Codes: A61B 2017/00469 for insertion of instruments, e.g. guide wire, optical fibre
• CPC Class Codes: A61M 25/09041 Mechanisms for insertion of guide wires

Abstract

An assembly of a wire inserter and lock is provided. The assembly includes a body portion with a bore inlet and outlet aligned with a locking area and an elongate outlet to align the wire as it passes therethrough.

A spring loaded locking button is mounted within the body and defines two tear-shaped bores through which the wire passes. In the locked position, the wire is wedged into the narrow ends of the tear-shaped bores, and this provides sufficient force to lock the wire without damage.

The body portion may include notched areas around which the wire can be wound, and a hole for capturing the end of the wire to facilitate storage of the wire.

Claims

1. An assembly of a wire inserter, and a lock for a medical wire, comprising:

a. an elongate housing;

b. a proximal nozzle portion providedby the housing and defining an outlet bore;

c. a push button cavity defined by the housing;

d. a riser element in the cavity, the riser element defining an alignment slot aligned with the outlet bore of the nozzle;

e. an exit bore defined by the housing positioned between the outlet bore and one end of the alignment slot;

f. an entry bore defined by the housing and positioned at an opposed end of the alignment slot at the exit bore, the outlet bore, entry and exit bore, and alignment slot being aligned;

g. an outwardly biased, spring loaded push button mounted on the riser element, the push button defining radially opposed bores, including wedge-shaped portions aligned with the alignment slot; and

,

h. a medical wire mounted for movement through the outlet bore, the entry and exit bores, the wedge shaped bores, and the alignment slot;

whereby;

i. when the push button is biased outwardly, the medical wire will be compressed into the wedge shaped portions of the radially opposed bores on the push button, and thereby lock the wire against movement along the housing;

ii. additional locking action on the medical wire is provided along the entry and exit bores; and

,

iii. when the push button is pressed inwardly, the medical wire will be unlocked from the wedge-shaped portions of the opposed bores, and the entry exit bores for free movement through the housing.

2. The assembly of claim 1, in which the radially opposed bores of the push button are tear shaped.

3. The assembly of claim 2, in which the proximal nozzle portion is sized and shaped for engagement with the entry bore a catheter.

4. The assembly of claim 3, in which the said nozzle is sized to occlude the medical wire at an end thereof.

5. The assembly of claim 4, in which a spring tip is attached at one end of the medical wire.

6. The assembly of claim 1, in which the housing is notched and provided with a bore to enable the medical wire to be wrapped thereon and stored.

7. The assembly of claim 6, in which the medical wire provides tail end means for insertion into the bore of the housing for storage thereon.

8. The assembly of claim 1, in which the push button is hollow, and spring biasing means are provided within the push button and supported by the riser element.

9. The assembly of claim 1, in which the push button is notched to improve alignment with the alignment slot of the riser element.

11. The assembly of claim 1, in which the said housing is constructed of a material selected from plastic and metal.

12. The assembly of claim 1, in which the said medical wire is constructed of a material selected from plastic and metal.

10. An assembly of a wire inserter, and a lock for a medical wire, comprising:

a. an elongate housing;

b. a push button cavity defined by the housing;

c. a riser element in the cavity the riser element defining an alignment slot for movement of the medical wire therealong;

d. an exit bore defined by the housing and positioned at one end of the alignment slot;

e. an entry bore defined by the housing and positioned at an opposed end of the alignment slot at the exit bore, the entry and exit bores, and alignment slot being aligned;

f. an outwardly biased, spring loaded push button mounted on the riser element, the push button defining radially opposed bores, including wedge-shaped portions aligned with the alignment slot; and

,

g. a medical wire mounted for movement through the entry and exit bores, the wedge-shaped bores, and the alignment slot;

whereby;

i. when the push button is biased outwardly, the medical wire will be compressed into the wedge-shaped portions of the radially opposed bores on the push button, and thereby lock the wire against movement along the housing;

ii. additional locking action on the medical wire is provided along the entry and exit bores; and

iii. when the push button is pressed inwardly, the medical wire will be unlocked from the wedge-shaped portions of the opposed bores, and the entry and exit bores for free movement through the housing.