Surgical basket devices
First Claim
1. A surgical basket instrument, comprising:
- a) a shaft having a proximal end and a distal end, said shaft formed from a cable, having a channel defined axially therethrough;
b) a sheath having a proximal end and a distal end and substantially surrounding said shaft, said sheath having a sheath diameter, said shaft movable axially relative to said sheath;
c) a basket assembly having a proximal end and a distal end and including a plurality of members coupled substantially circumferentially about said shaft, said members defining spaces therebetween, said basket assembly being expandable to a diameter greater than said diameter of said sheath, said basket assembly being collapsible to fit within said sheath, said basket assembly being axially slidable within said sheath; and
d) at least a first fiber optic having a proximal end and a distal end and adapted to receive one of a proximally coupled laser and a proximally coupled optical scope, said at least a first fiber optic being generally within said channel of said shaft.
1 Assignment
0 Petitions
Accused Products
Abstract
Surgical basket instruments according to the invention generally include a sheath (catheter), a shaft extending through and axially movable relative to the sheath, a basket assembly coupled to a distal end of the shaft, and a handle coupled to a proximal end of the shaft and adapted for facilitating movement of the shaft relative to the sheath such that the basket assembly may be moved out of and into the distal end of the sheath. The basket assembly is formed from a plurality of circumferentially spaced flexible wires or cables which facilitate entrapping of urological and gastrointestinal calculi. The shaft is made of a hollow compacted cable formed from a flexible yet strong shape memory material such as a nickel-titanium alloy. The hollow (channel) in the shaft receives at least one fiber optic couplable to a laser beam for destroying calculi. The fiber optic may be stationary or axially movable relative to the shaft, and may extend to the proximal end of the basket assembly or beyond the distal tip of the instrument so as to act as a sphinctertome. In one embodiment, additional fiber optics which extend through the channel, and a fluid source coupled to the channel permit the basket instrument to have the additional functionality of an endoscope.
302 Citations
27 Claims
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1. A surgical basket instrument, comprising:
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a) a shaft having a proximal end and a distal end, said shaft formed from a cable, having a channel defined axially therethrough;
b) a sheath having a proximal end and a distal end and substantially surrounding said shaft, said sheath having a sheath diameter, said shaft movable axially relative to said sheath;
c) a basket assembly having a proximal end and a distal end and including a plurality of members coupled substantially circumferentially about said shaft, said members defining spaces therebetween, said basket assembly being expandable to a diameter greater than said diameter of said sheath, said basket assembly being collapsible to fit within said sheath, said basket assembly being axially slidable within said sheath; and
d) at least a first fiber optic having a proximal end and a distal end and adapted to receive one of a proximally coupled laser and a proximally coupled optical scope, said at least a first fiber optic being generally within said channel of said shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
e) a handle having a stationary piece and a movable piece, said proximal end of said sheath coupled to said stationary piece, said proximal end of said shaft coupled to said movable piece, said movable piece movable axially relative to said stationary piece, said handle adapted to move said shaft axially relative to said sheath.
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3. A surgical basket instrument according to claim 1, wherein:
said proximal end of said basket assembly is coupled adjacent said distal end of said shaft by one of a crimp band and a ferrule, and said members are coupled adjacent said distal end of said basket assembly.
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4. A surgical basket instrument according to claim 3, wherein:
said distal end of said basket assembly defines a central opening into said basket assembly, and said shaft and said at least a first fiber optic extend through said central opening in said distal end of said basket assembly.
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5. A surgical basket instrument according to claim 1, wherein:
said members of said basket assembly are pre-formed from a flexible shape memory material, said basket assembly is self-expandable when released from within the sheath, and collapsible when retracted within said sheath.
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6. A surgical basket instrument according to claim 5, wherein:
said shape memory material is one of nickel-titanium and a nickel-titanium alloy.
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7. A surgical basket instrument according to claim 1, wherein:
said shaft is made from a plurality of metal strands twisted about a wire and then compacted.
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8. A surgical basket instrument according to claim 7, wherein:
said metal strands are shape memory metal strands.
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9. A surgical basket instrument according to claim 8, wherein:
said shape memory metal is nickel-titanium.
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10. A surgical basket instrument according to claim 1, wherein:
a protective sleeve is coupled to said distal end of said sheath.
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11. A surgical basket instrument according to claim 1, wherein:
a shield is provided across a distal end of said shaft surrounding but not blocking said fiber optic and substantially blocking said channel of said shaft.
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12. A surgical basket instrument according to claim 2, wherein:
said shaft and said basket assembly are both axially and rotatably movable within said sheath, and said handle is adapted to rotatably move said shaft and said basket relative to said sheath.
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13. A surgical basket instrument, comprising:
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a) a shaft having a proximal end and a distal end, said shaft formed from a cable having a channel defined axially therethrough;
b) a sheath having a proximal end and a distal end and substantially surrounding said shaft, said sheath having a sheath diameter, said shaft movable axially relative to said sheath;
c) a basket assembly having a proximal end and a distal end and including a plurality of members coupled substantially circumferentially about said shaft, said members defining spaces therebetween, said members of said basket assembly are pre-formed from a flexible shape memory material, said basket assembly being self-expandable when released from within the sheath, said basket assembly being expandable to a size greater than said diameter of said sheath, said basket assembly being collapsible to fit within said sheath, said basket assembly axially and rotatably movable within said sheath; and
d) a handle having a stationary piece and a movable piece, said proximal end of said sheath coupled to said stationary piece, said proximal end of said shaft coupled to said movable piece, said movable piece movable axially relative to said stationary piece, said handle adapted to move said shaft axially relative to said sheath. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
e) a plurality of fiber optics each having a proximal end and a distal end, each of said plurality of fiber optics being generally within said channel of said shaft.
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15. A surgical basket instrument according to claim 14, further comprising:
f) a fluid source coupled to and in fluid communication with said channel of said shaft.
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16. A surgical basket instrument according to claim 14, wherein:
at least one of said plurality of fiber optics is axially movable relative to said shaft, said distal end of said at least one of said plurality of fiber optics is extendable beyond said distal end of said shaft and extendably beyond said distal end of said basket assembly of the instrument.
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17. A surgical basket instrument according to claim 14, wherein:
a first of said plurality of fiber optics is adapted to couple to a light source, a second of said plurality of fiber optics is adapted to couple to a scope, and at least one of said fiber optics is adapted to be coupled to a laser.
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18. A surgical basket instrument according to claim 13, wherein:
said proximal end of said basket assembly is coupled adjacent said distal end of said shaft by one of a first crimp band and a first ferrule, and said members are coupled adjacent said distal end of said basket assembly by a distal cap.
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19. A surgical basket instrument according to claim 18, further comprising:
e) an actuating wire coupled proximally adjacent said handle and distally to said distal cap adjacent said distal end of said basket assembly, said actuating wire being generally within said channel.
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20. A surgical basket instrument according to claim 13, wherein:
said shaft is made from a plurality of metal strands twisted about a wire and then compacted.
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21. A surgical basket instrument according to claim 20, wherein:
said metal strands are a shape memory material.
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22. A surgical basket instrument according to claim 21, wherein:
said shape memory material is nickel-titanium.
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23. A surgical basket instrument according to claim 13, wherein:
said shaft and said basket assembly are both axially and rotatably movable within said sheath and said handle is adapted to rotatably move said shaft and said basket relative to said sheath.
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24. A surgical basket instrument, comprising:
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a) a shaft having a proximal end and a distal end, said shaft formed from a cable having a channel defined axially therethrough, said cable formed from a plurality of metal strands twisted about a wire and then compacted, said channel formed by removing said wire;
b) a sheath having a proximal end and a distal end and substantially surrounding said shaft, said sheath having a sheath diameter, said shaft movable axially relative to said sheath; and
c) a basket assembly having a proximal end extending from said shaft and a distal end, said basket assembly formed from said plurality of metal strands of said shaft such that said strands are substantially circumferentially positioned with spaces defined therebetween, said basket assembly being axially slidable within said sheath. - View Dependent Claims (25, 26, 27)
d) a handle having a stationary piece and a movable piece, said proximal end of said sheath coupled to said stationary piece, said proximal end of said shaft coupled to said movable piece, said movable piece movable axially relative to said stationary piece, said handle adapted to move said shaft axially and rotatably relative to said sheath.
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26. A surgical basket instrument according to claim 24, further comprising:
d) a fiber optic having a proximal end and a distal end and adapted to receive a proximally coupled laser, said fiber optic being generally within said channel of said shaft.
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27. A surgical basket instrument according to claim 24, wherein:
said proximal end of said basket assembly is coupled adjacent said distal end of said shaft by one of a first crimp band and a first ferrule, and said members are coupled adjacent said distal end of said basket assembly by a distal cap.
Specification