US 12,721,975 B2 · Splittable sheath

Abstract

A splittable sheath for an implantable medical device can include a jacket having an outer diameter and an inner diameter. A lumen can be defined by the inner diameter and extended from a proximal end to a distal end of the jacket. An electrode can be located at the distal end of the jacket. A signal wire can be disposed within the jacket and can be electrically coupled to the electrode. A rail can be configured to shield the signal wire from a cut path of a sheath splitter. In some examples, the sheath can further include a second rail. For instance, the signal wire can be located between a first rail and a second rail along the length of the sheath. The cut path can be located between the first rail and the second rail on a radially opposing side of the sheath from the signal wire.

Claims23

Dependent claims

A splittable sheath for an implantable medical device, the sheath comprising:

a jacket including an annular wall extending from a proximal end to a distal end and having an outer diameter and an inner diameter, wherein the annular wall includes a jacket section and a jacket stripe section extending from the proximal end to the distal end, and wherein the jacket stripe section is constructed from a material that is softer than a material of the jacket section;
a lumen defined by the inner diameter and extended from the proximal end to the distal end of the jacket;
an electrode located at the distal end of the jacket;
a signal wire disposed within the jacket and electrically coupled to the electrode;
and
a plurality of guard rails configured to shield the signal wire from a cut path of a sheath splitter, the plurality of guard rails defining a cut zone extending in a longitudinal direction along the jacket, wherein when the splittable sheath is unsplit the cut zone has a radial cut zone angle that is larger at the proximal end than at the distal end of the jacket.

3 more elements

A method for making a splittable sheath, the method comprising:

placing a lead liner over a lumen mandrel;
placing a signal wire liner over a signal wire mandrel;
locating a first rail mandrel and a second rail mandrel along an outer diameter of the lead liner, wherein the signal wire liner is located between the first rail mandrel and the second rail mandrel along the length of the sheath;
applying a jacket over the signal wire liner and the first and second rail mandrels, wherein the jacket includes an annular wall extending from a proximal end to a distal end,
wherein the annular wall includes a jacket section and a jacket stripe section extending from the proximal end to the distal end, and wherein the jacket stripe section is constructed from a material that is softer than a material of the jacket section;
removing each of the lumen mandrel, the signal wire mandrel, and the first and second rail mandrels, after the jacket is applied;
inserting a signal wire into the signal wire liner lumen, a first rail into the first rail lumen, and a second rail into the second rail lumen, after the lumen mandrel, the signal wire mandrel, and the first and second rail mandrels are removed, the first rail and the second rail each including a longitudinal segment extending in a longitudinal direction along the jacket and defining a cut zone between the first rail and the second rail, and wherein when the splittable sheath is unsplit the cut zone has a radial cut zone angle that is larger at the proximal end than at the distal end of the jacket;
and
electrically coupling the signal wire to an electrode located on a distal end of the jacket.

6 more elements

Dependencies are inferred from the claim text.

Splittable sheath

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Splittable sheath

Life of this patent

Abstract

Claims23