Stent introducer and method of use
First Claim
1. Stent introducer (10) comprising:
- an outer elongated member (11) having an outer member passage (12) extending longitudinally therein and a first operable direction (13) for deploying a self-expanding stent (14) from said outer member passage;
an inner elongated member (15) positioned in said outer member passage and having a second operable direction (16) for deploying said stent from said outer member passage; and
an interconnection mechanism (17) connected to said outer and said inner members and operable for simultaneously operating said outer member in said first direction for a pre-selected distance and said inner member in said second direction for a pre-selected distance, whereby said stent in a collapsed condition is deployed from said outer member passage to an expanded condition and wherein said stent is longitudinally fixed in position during expansion to said expanded condition.
3 Assignments
0 Petitions
Accused Products
Abstract
An introducer (10) method of percutaneously deploying a self-expanding stent (14) in a body vessel or duct (43). The stent introducer includes an outer elongated member tube (11) having a passage (12) extending longitudinally therein and operable in a first direction (13) for deploying the self-expanding stent in a collapsed condition from the outer member passage. An inner elongated member (15) is positioned in the outer member passage and is operable in a second direction (16) for deploying the stent from the outer member passage. An interconnection mechanism (17) is connected to the outer and inner members for operation thereof, whereby a stent in a collapsed condition is deployed from the outer member passage to an expanded condition. When deployed, the expanded portion of the stent remains fixedly positioned longitudinally in the body vessel or duct as the remaining portion is deployed from the outer member passage. The inner member operates a second operable distance (34) and includes at least one protuberance (19) for pushing the stent out of the outer member passage as the outer member is concomitantly withdrawn a first operable distance (33) from the collapsed, self-expanding stent. The first operable distance is the short length (36) of the stent in an expanded condition, whereas the second operable distance (34) is approximately the distance (37) in the long and short lengths of the stent. The interconnection mechanism of the introducer further includes a transfer assembly (23) coupled to the outer and inner members for controlling the travel distance and direction thereof.
670 Citations
20 Claims
-
1. Stent introducer (10) comprising:
-
an outer elongated member (11) having an outer member passage (12) extending longitudinally therein and a first operable direction (13) for deploying a self-expanding stent (14) from said outer member passage; an inner elongated member (15) positioned in said outer member passage and having a second operable direction (16) for deploying said stent from said outer member passage; and an interconnection mechanism (17) connected to said outer and said inner members and operable for simultaneously operating said outer member in said first direction for a pre-selected distance and said inner member in said second direction for a pre-selected distance, whereby said stent in a collapsed condition is deployed from said outer member passage to an expanded condition and wherein said stent is longitudinally fixed in position during expansion to said expanded condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. Stent introducer (10) comprising:
-
an outer elongated member (11) having an outer member passage (12) extending longitudinally therein and a first operable distance (33) for deploying a self-expanding stent (14) from said outer passage; an inner elongated member (15) positioned in said outer passage and having a second operable distance (34) for deploying said stent from said outer member passage, said first and second operable distances being related to a long length (35) of said stent in a collapsed condition and a short length (36) of said stent in an expanded condition; and an interconnection mechanism (17) coupled to said outer member and operable for simultaneously operating said outer and said inner members said first and said second operable distances, respectively, whereby said stent in said collapsed condition is deployed from said outer member passage to said expanded condition and wherein said stent is longitudinally fixed in position during expansion to said expanded condition. - View Dependent Claims (14, 15, 16, 17, 18)
-
-
19. Stent introducer (10) comprising:
-
an outer elongated member (11) having an outer member passage (12) extending longitudinally therein and a first operable distance (33), said outer member being operable in a first direction (13) over said first distance for deploying a self-expanding stent (14) in a collapsed condition from said outer member passage; an inner elongated member (15) positioned in and extendable from said outer member passage and having a second operable distance (34), said inner member being operable in a second direction (16) opposite to said first direction for deploying said stent in said collapsed condition in said outer member passage, and said inner elongated member being operable over said second distance simultaneously with operation of said outer elongated member over said first distance;
said first operable distance being at least the short length (36) of said stent in an expanded condition, said second operable distance being approximately the difference (37) in the long and short lengths of said stent, said inner member including at least one protuberance (19) for engaging said stent in said collapsed condition and deploying said stent from said outer member passage, said inner member also including first and second radiopaque markers (29,
30) positioned about an atraumatic distal end (32) thereof for indicating the position of said stent in said expanded condition; andan interconnection mechanism (17) including a first carrier (20) connected to said outer member and a second carrier (21 ) connected to said inner member;
an input member (22) coupled to said second carrier;
a transfer assembly (23) coupled to said input member and said first carrier;
said first carrier including a carrier passage (26) extending therethrough and communicating with said outer member passage, said inner member extending through said carrier passage; anda lock (20) coupleable to least one of said first and second carriers for limiting the movement thereof; whereby said stent in said collapsed condition is deployed from said outer member passage to said expanded condition and wherein said stent is longitudinally fixed in position during expansion to said expanded condition.
-
-
20. A method of percutaneously deploying a self-expanding stent (14) in a body vessel or duct (43) comprising the steps of:
-
positioning a self-expanding stent (14) in a collapsed condition around an inner member (15) and in an outer member passage (12) of a stent introducer (10); percutaneously introducing said self-expanding stent positioned in said stent introducer to a designated position (42) in a body vessel or duct (43); deploying from said outer member passage and with said inner member a distal portion (44) of said self-expanding stent to an expanded condition at the designated position in the body vessel or duct; and deploying from said outer member passage and with said inner member a remaining portion (45) of said self-expanding stent, said distal portion of said self-expanding stent remaining fixedly positioned longitudinally as said remaining portion is deployed from said outer member passage, wherein the step of deploying said distal portion includes the steps of withdrawing said outer member from said stent and pushing said inner member out of said outer member passage.
-
Specification