Medical appliance delivery apparatus and method of use
First Claim
1. A device for allowing a user to deploy a stent in an anatomical lumen of a patient, the device comprising:
- a longitudinally extending inner tubular member having distal and proximal ends, the distal end comprising a tip;
a longitudinally extending outer tubular member having an outer and inner diameter, the outer tubular member being longitudinally and axially displaceable relative to the inner tubular member;
a handle, coupled with a portion of the outer tubular member, the handle having first and second ends and the second end defining a cavity having at least one stop compatible male or female locking member formed therein;
a stop formed about the inner tubular member, the outer surface of the stop comprising at least one female or male locking member configured to coaxially engage the male or female locking member, respectively, of the handle cavity to form a safety mechanism, wherein the locking members are configured to engage one another along an axis coaxial to a longitudinal axis of the inner and outer tubular members;
wherein the outer tubular member and inner tubular member are axially displaceable relative to each other without requiring rotational motion with respect to one another to a predetermined threshold corresponding to partial deployment of a stent and engagement of the locking members absent intervention by the user of the device such that relative axial displacement of the outer tubular member and inner tubular member and a corresponding degree of stent deployment is limited by the safety mechanism absent the user intervention.
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Accused Products
Abstract
The present invention, in an exemplary embodiment, provides a stent deployment apparatus comprising excellent safety and stent placement and deployment features. An exemplary stent deployment apparatus in accordance with the present invention can facilitate the precise delivery of stents in a safe and repeatable fashion. In particular, a preferred deployment apparatus allows the physician to concentrate on correct placement without having to estimate extent of deployment by providing a physical safety mechanism that limits deployment to the critical deployment point. Moreover, to exceed this threshold, an audible and/or tactile indicator informs the physician that she can no longer retract the stent beyond this point. The stent deployment apparatus guidewire may also be extended rather than retracting the outer catheter to deliver the stent. Moreover, the distal tip is designed to comfortably guide the deployment apparatus through a diseased or occluded lumen so that the stent can be delivered in the most beneficial location. Additionally, the distal tip facilitates the removal of the deployment apparatus even if a defective stent is only partially radially expanded. In alternative embodiments, the stent deployment apparatus allows for the insertion of an optical scope to facilitate stent delivery.
426 Citations
28 Claims
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1. A device for allowing a user to deploy a stent in an anatomical lumen of a patient, the device comprising:
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a longitudinally extending inner tubular member having distal and proximal ends, the distal end comprising a tip; a longitudinally extending outer tubular member having an outer and inner diameter, the outer tubular member being longitudinally and axially displaceable relative to the inner tubular member; a handle, coupled with a portion of the outer tubular member, the handle having first and second ends and the second end defining a cavity having at least one stop compatible male or female locking member formed therein; a stop formed about the inner tubular member, the outer surface of the stop comprising at least one female or male locking member configured to coaxially engage the male or female locking member, respectively, of the handle cavity to form a safety mechanism, wherein the locking members are configured to engage one another along an axis coaxial to a longitudinal axis of the inner and outer tubular members; wherein the outer tubular member and inner tubular member are axially displaceable relative to each other without requiring rotational motion with respect to one another to a predetermined threshold corresponding to partial deployment of a stent and engagement of the locking members absent intervention by the user of the device such that relative axial displacement of the outer tubular member and inner tubular member and a corresponding degree of stent deployment is limited by the safety mechanism absent the user intervention. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A device for allowing a user to deploy a stent in an anatomical lumen of a patient, the device comprising:
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a longitudinally extending inner tubular member having distal and proximal ends, the distal end comprising a tip; a longitudinally extending outer tubular member having an outer and inner diameter, the outer tubular member being longitudinally and axially displaceable relative to the inner tubular member; a handle, coupled with a portion of the outer tubular member, the handle having first and second ends and the second end defining a cavity having at least one stop compatible male or female locking member formed therein, wherein the cavity is disposed around a circumference of the outer tubular member; a stop disposed about the inner tubular member, the outer surface of the stop comprising at least one female or male locking member configured to coaxially engage the male or female locking member, respectively, of the handle cavity to form a safety mechanism; wherein the outer tubular member and inner tubular member are axially displaceable relative to each other without requiring rotational motion with respect to one another to a predetermined threshold corresponding to partial deployment of a stent and engagement of the locking members absent intervention by the user of the device such that relative axial displacement of the outer tubular member and inner tubular member and a corresponding degree of stent deployment is limited by the safety mechanism absent the user intervention.
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28. A device for allowing a user to deploy a stent in an anatomical lumen of a patient, the device comprising:
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a longitudinally extending inner tubular member having distal and proximal ends, the distal end comprising a tip; a longitudinally extending outer tubular member having an outer and inner diameter, the outer tubular member being longitudinally and axially displaceable relative to the inner tubular member; a handle, coupled with a portion of the outer tubular member, the handle having first and second ends and the second end defining a cavity having at least one stop compatible male or female locking member formed therein; a stop disposed around a circumference of the inner tubular member, the outer surface of the stop comprising at least one female or male locking member configured to coaxially engage the male or female locking member, respectively, of the handle cavity to form a safety mechanism; wherein the outer tubular member and inner tubular member are axially displaceable relative to each other without requiring rotational motion with respect to one another to a predetermined threshold corresponding to partial deployment of a stent and engagement of the locking members absent intervention by the user of the device such that relative axial displacement of the outer tubular member and inner tubular member and a corresponding degree of stent deployment is limited by the safety mechanism absent the user intervention.
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Specification