Introducer element and method of using same

• US 6,363,273 B1
• Filed: 12/22/1999
• Issued: 03/26/2002
• Est. Priority Date: 12/22/1999
• Status: Expired due to Term

• Current Assignee: Integra Lifesciences Corporation (Integra LifeSciences Holdings Corporation)
• Original Assignee: Codman & Shurtleff Incorporated (Johnson & Johnson)
• Inventors: Beardsley, Timothy A., Mastrorio, Brooke W., Gorhan, Michael C.
• Primary Examiner(s): Nasser, Robert L.
• Assistant Examiner(s): MARMOR II, CHARLES ALAN
• Application Number:
  US09/470,062
• Time in Patent Office: 825 Days
• Field of Search: 600/435, 600/434, 600/561, 600/585, 604/161, 604/163, 604/164, 604/175, 604/905
• US Class Current: 600/434
• CPC Class Codes: A61B 5/14553 specially adapted for cerebral tissue
• CPC Class Codes: A61M 2210/0693 Brain, cerebrum
• CPC Class Codes: A61M 25/0668 splittable, tear apart

Abstract

The present invention provides an introducer element for facilitating the insertion of a medical instrument into a body. The introducer element includes first, second, third and fourth housing areas. The first area contains a first lumen and the second area contains a second lumen. A quantity of peel-away tubing is partially disposed within the second lumen. The first and second lumen are separated from each other in the first and second housing areas, but are merged into one lumen in either the third or fourth housing area by a guide/splitting tube.

Claims

1. An introducer element, comprising:

a body having a first and second lumen, each having a distal end and a proximal end, wherein the first and second lumen merge at their distal ends to provide a combined lumen having a proximal end and a distal end;

a quantity of tearable, selectively removable peel-away tubing having a proximal end and a distal end, wherein a slit is defined at a point between the proximal end and the distal end of the quantity of peel away tubing, the quantity of peel-away tubing being disposed within the second lumen and the combined lumen; and

a tube disposed within the first lumen, passing through the slit defined by the quantity of peel-away tubing and into the combined lumen.

2. The introducer element of claim 1, wherein the tube provides a continuous path between the first lumen and the combined lumen.

3. The introducer element of claim 2, wherein the proximal end of the quantity of peel-away tubing extends from a proximal end of the second lumen and the distal end of the quantity of peel-away tubing extends from the distal end of the combined lumen.

4. The introducer element of claim 3, further comprising a grasping element secured to the proximal end of the quantity of peel-away tubing.

5. The introducer element of claim 1, wherein the quantity of peel-away tubing is made of polytetrafluoroethylene.

6. An introducer element, comprising:

a body having a longitudinal axis and including first, second, third and fourth housing areas, the third housing area being connected to the first, second and fourth housing areas and being disposed between the first housing area and fourth housing area and between the second housing area and fourth housing area, the first housing area having a first lumen defined therewithin, the first lumen having a proximal end and a distal end, the second housing area having a second lumen defined therewithin, the second lumen having a proximal end and a distal end, wherein the first lumen and the second lumen merge at their distal ends to provide a combined lumen;

a quantity of tearable, selectively removable peel-away tubing having a proximal end and a distal end, wherein a slit is defined at a point between the proximal end and the distal end of the quantity of peel away tubing, the quantity of peel-away tubing being disposed within the second lumen and the combined lumen; and

a tube disposed within the first lumen, passing through the slit defined by the quantity of peel-away tubing and into the combined lumen.

7. The introducer element of claim 6, wherein the first housing area is substantially coaxial with the longitudinal axis of the body.

8. The introducer element of claim 6, wherein the fourth housing area is substantially coaxial with the longitudinal axis of the body.

9. The introducer element of claim 6, wherein the second housing area is offset from the longitudinal axis of the body.

10. The introducer element of claim 9, wherein the second housing area is offset from the longitudinal axis of the body by an angle in the range of about 20°

to 75°

.

11. The introducer element of claim 6, wherein the quantity of peel-away tubing is made of polytetrafluoroethylene.

12. The introducer element of claim 6, further comprising a grasping element secured to the proximal end of the quantity of peel-away tubing.

13. A method for introducing a medical instrument into a body, comprising the steps of:

providing an introducer element, comprising;

a body having a first and second lumen, each having a distal end and a proximal end, wherein the first and second lumen merge at their distal ends to provide a combined lumen having a proximal end and a distal end;

a quantity of tearable, peel-away tubing having a proximal end and a distal end, wherein a slit is defined at a point between the proximal end and the distal end of the quantity of peel away tubing, the quantity of peel-away tubing being disposed within the second lumen and the combined lumen;

a tube disposed within the first lumen, passing through the slit defined by the quantity of peel-away tubing and into the combined lumen; and

a stylet disposed within the introducer element such that at least a portion of the stylet distally protrudes from the combined lumen of the introducer element;

providing an entry facilitation element having at least one lumen defined therethrough;

inserting the entry facilitation element into the body to a predetermined depth within the body such that at least a portion of the entry facilitation element protrudes from the body;

properly placing the introducer element in the entry facilitation element;

removing the quantity of peel-away tubing from the introducer element.

14. The method of claim 13, wherein the step of properly placing the introducer element in the entry facilitation element comprises the steps of:

inserting the distally protruding portion of the stylet into and through one of the at least one lumen of the entry facilitation element and into the body to a predetermined depth within the body;

securing the stylet;

securing the introducer element to the entry facilitation element;

unsecuring the stylet; and

removing the stylet from the body, the entry facilitation element and the introducer element.