Device for catheter sheath retraction
First Claim
1. A device for moving an elongate member relative to an elongate body through which it at least partially extends, the device comprising:
- a housing connectable to the elongate body;
a mover associated with the housing and connectable to the elongate member for moving the elongate member relative to the housing and relative to a connected elongate body;
a limiter for limiting the extent of movement of the elongate member relative to the elongate body, the limiter including a band of substantially inextensible material which is connected at one end to, and is wound on, a spool which is mounted to the housing, the band being connected at the other end to a winding member of the mover onto which the band is wound from the spool as the mover moves the elongate member, thereby permitting movement of the mover until the band is fully unwound from the spool and thereafter preventing further movement of the elongate member by the mover; and
a pre-mover for effecting a pre-movement adjustment of the elongate member connected to the mover relative to the elongate body connected to the housing, to reduce slack between the elongate member and the elongate body in preparation for moving the elongate member with the mover, to ensure direct subsequent relative movement between the elongate member and the elongate body by the mover, the pre-mover being configured to become inoperable following pre-movement adjustment of the elongate member, wherein the housing forms a sealed unit in which the mover and pre-mover are mounted to be actuated by a user.
1 Assignment
0 Petitions
Accused Products
Abstract
There is disclosed herein a device (1) for moving an elongate member relative to an. elongate body through which it extends, the device comprising: a housing (10) connectable to the elongate body; a mover (20) associated with the housing and connectable to the elongate member for moving the elongate member relative to the housing and relative to a connected elongate body; and a pre-mover (40) for adjusting an elongate member connected to the mover relative to an elongate body connected to the housing in preparation for moving the elongate member with the mover. There is also disclosed a related surgical apparatus.
561 Citations
19 Claims
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1. A device for moving an elongate member relative to an elongate body through which it at least partially extends, the device comprising:
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a housing connectable to the elongate body; a mover associated with the housing and connectable to the elongate member for moving the elongate member relative to the housing and relative to a connected elongate body; a limiter for limiting the extent of movement of the elongate member relative to the elongate body, the limiter including a band of substantially inextensible material which is connected at one end to, and is wound on, a spool which is mounted to the housing, the band being connected at the other end to a winding member of the mover onto which the band is wound from the spool as the mover moves the elongate member, thereby permitting movement of the mover until the band is fully unwound from the spool and thereafter preventing further movement of the elongate member by the mover; and a pre-mover for effecting a pre-movement adjustment of the elongate member connected to the mover relative to the elongate body connected to the housing, to reduce slack between the elongate member and the elongate body in preparation for moving the elongate member with the mover, to ensure direct subsequent relative movement between the elongate member and the elongate body by the mover, the pre-mover being configured to become inoperable following pre-movement adjustment of the elongate member, wherein the housing forms a sealed unit in which the mover and pre-mover are mounted to be actuated by a user. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A device for moving an elongate member by a predetermined distance relative to an elongate body through which it at least partially extends, thereby to release a stent at the distal end of the elongate body, the device comprising:
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a take-up reel onto which the elongate member is wound when it is moved; and a limiter that is configured to limit further rotation of the take-up reel after a length of the elongate member has been taken up on the reel to move the elongate member said pre-determined distance, wherein the limiter comprises a tethered line, which is configured to be progressively consumed when the take-up reel is rotated until the tethered line anchors the take-up reel against further rotation, one end of the tethered line being provided with a line connector by which it may be attached to a limiter reel on which it is to be taken up to be consumed, and wherein the limiter reel is provided with plural reel connectors to which the line connector may be connected to attach the tethered line to the limiter reel. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A stent delivery device, comprising:
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a take-up reel onto which a sheath retraction line is wound when an outer sheath which surrounds a compressed stent at a distal portion of the delivery device is retracted; and a limiter which limits the length of the sheath retraction line which may be taken up on the reel so as to limit retraction of the outer sheath, wherein the limiter comprises a limiter reel and a tethered line connected to the limiter reel, which is progressively consumed by the limiter reel when the take-up reel is rotated, wherein the tethered line has a consumable length corresponding to the retraction limit of the outer sheath, and wherein (i) one or more further tether lines are provided having respective consumable lengths different from the length of the tethered line connected to the limiter reel, or (ii) the tether line connected to the limiter reel has reference markings along its length indicating different available consumable lengths, the consumable length which corresponds to the retraction limit of the outer sheath being indicated by one said reference marker.
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19. A device for moving an elongate member relative to an elongate body through which it at least partially extends, the device comprising:
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a housing connectable to the elongate body; a mover associated with the housing and connectable to the elongate member for moving the elongate member relative to the housing and relative to a connected elongate body; and a pre-mover for effecting a pre-movement adjustment of the elongate member connected to the mover relative to the elongate body connected to the housing, to reduce slack between the elongate member and the elongate body in preparation for moving the elongate member with the mover, to ensure direct subsequent relative movement between the elongate member and the elongate body by the mover, wherein; the housing forms a sealed unit in which the mover and pre-mover are mounted to be actuated by a user, the pre-mover includes a rack gear configured to engage initially with a pinion gear of the mover, so that adjustment of the elongate member relative to the elongate body is effected by actuation of the rack gear to rotate the pinion gear of the mover, and wherein the rack gear is mounted to a slider arm which is connected at one end to a button which is mounted to slide relative to the housing and is arranged to be actuated by a user to effect actuation of the rack gear, and the pre-mover is configured to become inoperable following pre-movement adjustment of the elongate member.
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Specification