Catheter with splittable wall shaft and peel tool
First Claim
1. An elongate medical device for use with a wire guide having a distal end, the elongate medical device comprising a coextruded shaft extending between a distal end and a proximal end, and an eccentrically located lumen extending through at least a portion of the shaft, the lumen comprising a coupling region extending between a distal opening and a proximal opening, the coupling region being configured to receive the wire guide extending there through,wherein the coextruded shaft comprises a unitary cross-section having a first material defining a first cross-sectional area and a second material dissimilar from the first material defining a second cross-sectional area, the first material being more splittable than the second material, the first cross-sectional area being disposed between and contiguous with at least a portion of the lumen and a first portion of an exterior surface of the shaft along at least a portion of the coupling region, the second cross-sectional area being contiguous with a second portion of the exterior surface, wherein the first material is splittable along an intermediate pathway of the first cross-sectional area that is spaced apart from an interface between the first material and the second material dissimilar from the first material, the intermediate pathway having no structural discontinuities for facilitating splitting there along and in advancement of being split, and wherein the first material is splittable along the intermediate pathway by an outwardly directed force of the wire guide disposed within the lumen as the wire guide is pulled out of and away from the shaft of the elongate medical device.
3 Assignments
0 Petitions
Accused Products
Abstract
A method and apparatus for uncoupling a wire guide from and elongate medical device comprising a catheter shaft having a wire guide lumen extending there through, wherein the material surrounding the wire guide lumen is selected or adapted to facilitate splittability for removal of the wire guide. The catheter shaft is coextruded and comprises a plurality of materials. The portion of the shaft adjacent the wire guide lumen is formed from a first material and the balance of the shaft is formed from a second material. The first material is selected or adapted to facilitate splittability as compared to the second material. The first material may have a lower durometer than the second material. A peel tool for separating the wire guide from the catheter shaft is also provided.
119 Citations
17 Claims
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1. An elongate medical device for use with a wire guide having a distal end, the elongate medical device comprising a coextruded shaft extending between a distal end and a proximal end, and an eccentrically located lumen extending through at least a portion of the shaft, the lumen comprising a coupling region extending between a distal opening and a proximal opening, the coupling region being configured to receive the wire guide extending there through,
wherein the coextruded shaft comprises a unitary cross-section having a first material defining a first cross-sectional area and a second material dissimilar from the first material defining a second cross-sectional area, the first material being more splittable than the second material, the first cross-sectional area being disposed between and contiguous with at least a portion of the lumen and a first portion of an exterior surface of the shaft along at least a portion of the coupling region, the second cross-sectional area being contiguous with a second portion of the exterior surface, wherein the first material is splittable along an intermediate pathway of the first cross-sectional area that is spaced apart from an interface between the first material and the second material dissimilar from the first material, the intermediate pathway having no structural discontinuities for facilitating splitting there along and in advancement of being split, and wherein the first material is splittable along the intermediate pathway by an outwardly directed force of the wire guide disposed within the lumen as the wire guide is pulled out of and away from the shaft of the elongate medical device.
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16. A system comprising:
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a. a catheter comprising a shaft and a plurality of lumens extending through at least a portion of the shaft, the plurality of lumens including a wire guide lumen defined by a wall of the shaft, the wall of the shaft comprising at least first and second cross-sectional areas, a first material defining the first cross sectional area and a second material dissimilar from the first material forming the second cross sectional area, one of the first and second cross-sectional areas including a portion of the wall extending between the wire guide lumen and an exterior surface of the wall, the portion of the wall being splittable along an interior pathway extending transversely through the wall of the shaft between the wire guide lumen and the exterior surface of the wall to allow access to the wire guide lumen, the interior pathway being spaced apart from an interface between the first material and the second material, the portion of the wall comprising a structurally and chemically uniform material in advancement of being split along the interior pathway; b. a wire guide having a distal portion and a proximal portion, the distal portion extending through at least a portion of the wire guide lumen, the proximal portion extending out through the wall of the shaft; and c. a peel tool having an engagement portion, the engagement portion being engaged with the wall of the shaft and the proximal portion of the wire guide, wherein distal movement of the peel tool relative to one of the wire guide and the shaft causes the wire guide to separate from the shaft. - View Dependent Claims (17)
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Specification