Stent delivery system
First Claim
1. A stent delivery system, comprising:
- an inner member having a proximal end;
a sleeve coupled to the inner member adjacent to the proximal end;
a deployment sheath disposed about the inner member;
a bumper member disposed between the inner member and the deployment sheath;
wherein the bumper member comprises an intermediate tube disposed between the inner member and the deployment sheath;
a gear rack assembly coupled to the deployment sheath;
a handle coupled to the inner member and to the deployment sheath;
wherein the handle includes an actuation member, the actuation member being coupled to the gear rack assembly so that actuation of the actuation member shifts the longitudinal position of the gear rack assembly and the deployment sheath; and
an engagement mechanism located along an inner groove of the gear rack assembly and coupled thereto, the engagement mechanism being configured to engage the sleeve of the inner member so that proximal retraction of the gear rack assembly results in proximal retraction of the inner shaft.
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Accused Products
Abstract
Stent delivery systems and methods for making and using the same are disclosed. An example stent delivery system may include an inner member having a proximal end. A sleeve may be coupled to the inner member adjacent to the proximal end. A deployment sheath may be disposed about the inner member. A gear rack assembly may be coupled to the deployment sheath. A stent may be disposed between the inner member and the deployment sheath. A handle may be coupled to the inner member and to the deployment sheath. The handle may include an actuation member. The actuation member may be coupled to the gear rack assembly so that actuation of the actuation to member shifts the longitudinal position of the gear rack assembly and the deployment sheath. An engagement mechanism may be coupled to the gear rack assembly. The engagement mechanism may be configured to engage the sleeve of the inner member so that proximal retraction of the gear rack assembly results in proximal retraction of the inner shaft.
141 Citations
18 Claims
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1. A stent delivery system, comprising:
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an inner member having a proximal end; a sleeve coupled to the inner member adjacent to the proximal end; a deployment sheath disposed about the inner member; a bumper member disposed between the inner member and the deployment sheath; wherein the bumper member comprises an intermediate tube disposed between the inner member and the deployment sheath; a gear rack assembly coupled to the deployment sheath; a handle coupled to the inner member and to the deployment sheath; wherein the handle includes an actuation member, the actuation member being coupled to the gear rack assembly so that actuation of the actuation member shifts the longitudinal position of the gear rack assembly and the deployment sheath; and an engagement mechanism located along an inner groove of the gear rack assembly and coupled thereto, the engagement mechanism being configured to engage the sleeve of the inner member so that proximal retraction of the gear rack assembly results in proximal retraction of the inner shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A stent delivery system, comprising:
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an inner member having an enlarged proximal end and an atraumatic distal tip; a stent disposed about the inner member; a deployment sheath disposed about the inner member and the stent; an intermediate tube disposed between the inner member and the deployment sheath, the intermediate tube having a distal end disposed adjacent a proximal end of the sheath; a gear rack assembly coupled to the deployment sheath; a handle coupled to the inner member and to the deployment sheath; wherein the handle includes a thumbwheel that is coupled to the gear rack assembly so that rotation of the thumbwheel proximally retracts the gear rack assembly and the deployment sheath; and an engagement mechanism coupled to an inner groove of the gear rack assembly, the engagement mechanism being configured to catch on the enlarged proximal end of the inner member, after the deployment sheath is proximally retracted a distance, and proximally retract the inner member. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A stent delivery system, comprising:
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an inner member having an atraumatic distal tip; a stent disposed about the inner member; a deployment sheath disposed about the inner member and the stent; an intermediate tube disposed between the inner member and the deployment sheath; a gear rack assembly coupled to the deployment sheath; and a handle coupled to the inner member and to the deployment sheath, the handle including a thumbwheel; wherein rotation of the thumbwheel causes the gear rack assembly and deployment sheath to retract proximally; and wherein further rotation of the thumbwheel also causes the inner member to retract proximally along with the deployment sheath.
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Specification