WO2001010290B1 - Medical retrieval device with releasable retrieval basket - Google Patents

Medical retrieval device with releasable retrieval basket

Info

Publication number
WO2001010290B1
WO2001010290B1 PCT/US2000/021348 US0021348W WO0110290B1 WO 2001010290 B1 WO2001010290 B1 WO 2001010290B1 US 0021348 W US0021348 W US 0021348W WO 0110290 B1 WO0110290 B1 WO 0110290B1
Authority
WO
WIPO (PCT)
Prior art keywords
retrieval assembly
sheath
medical instrument
distal
proximal
Prior art date
Application number
PCT/US2000/021348
Other languages
French (fr)
Other versions
WO2001010290A3 (en
WO2001010290A2 (en
WO2001010290A9 (en
Inventor
James S Bates
Srinivas Nishtala
James A Teague
Michael S H Chu
Original Assignee
Scimed Life Systems Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Scimed Life Systems Inc filed Critical Scimed Life Systems Inc
Priority to AU64000/00A priority Critical patent/AU6400000A/en
Publication of WO2001010290A2 publication Critical patent/WO2001010290A2/en
Publication of WO2001010290A3 publication Critical patent/WO2001010290A3/en
Publication of WO2001010290B1 publication Critical patent/WO2001010290B1/en
Publication of WO2001010290A9 publication Critical patent/WO2001010290A9/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/0046—Surgical instruments, devices or methods, e.g. tourniquets with a releasable handle; with handle and operating part separable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
    • A61B2017/2212—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions having a closed distal end, e.g. a loop

Abstract

Baskets with multiple portions and multiple deployed configurations allow the capture and release of material within the body.

Claims

AMENDED CLAIMS[received by the International Bureau on 20 December 2000 (20.12.00); original claims 1, 4. 13-15, 18 and 24 amended; original claims 3 and 5-12 cancelled; new claim 27 added; remaining claims unchanged (3 pages)]
1. A medical instrument comprising: a proximal handle; a sheath including a proximal portion and a distal end. the proximal portion of the sheath coupled to the handle; and a retrieval assembly comprising a plurality of legs, said retrieval assembly further comprising a bulbous proximal portion and a bulbous distal portion, the distal portion of said retrieval assembly for capturing material in a body when the distal portion of the retrieval assembly extends from the distal end of the sheath and the proximal portion of the retrieval assembly is collapsed within the sheath, the retrieval assembly expanding to release captured material when the distal and proximal portions of the retrieval assembly extend from the distal end of the sheath.
2. The medical instrument of claim 1 wherein said retrieval assembly comprises a basket.
3. Canceled.
4. The medical instrument of claim 2 wherein said basket comprises four legs.
5. Canceled.
6. Canceled.
7. Canceled.
8. Canceled.
9. Canceled.
10. Canceled.
1 1. Canceled.
12. Canceled.
13. T Thhee mmeeddiiccal instrument of claim 2 further comprising at least three sets of paired, helical basket legs.
14. The medical instrument of claim 2 further comprising an atraumatic basket.
15. The medical instrument of claim 2 further comprising preformed basket legs.
16. The medical instrument of claim 1 further comprising: a sheath axially moveable over said retrieval assembly, whereby said retrieval assembly moves between at least said first, second, and third positions when said sheath is axially moved.
17. The medical instrument of claim 1 further comprising: an elongated guide member extending within said sheath lumen and operably attached to a proximal end of said retrieval assembly, whereby said retrieval assembly moves between at least said first, second, and third positions when said elongated guide member is axially moved within said sheath.
18. The medical instrument of claim 1 wherein said sheath further comprises: at least two compressible slits, whereby compression of said slits causes said sheath to retract from said retrieval assembly.
19. The medical instrument of claim 1 wherein said sheath further comprises: at least one slot; and at least one pin operably attached to said sheath and slideably moveable within said slot, whereby movement of said pin causes said sheath to retract from said retrieval assembly.
20. The medical instrument of claim 1 further comprising a threaded rotational mechanism, said mechanism causing axial movement of said sheath over said retrieval assembly.
21. The medical instrument of claim 1 further comprising at least three retrieval assembly portions.
22. The medical instrument of claim 1 wherein said handle is removable.
23. The medical instrument of claim 16 further comprising a handle having a groove and a slide adjustment, said slide adjustment operably attached to said sheath, whereby axial movement of said slide adjustment retracts the distal end of said sheath from said retrieval assembly.
24. A method for retrieving biological materials in the body, comprising the steps of: inserting a medical instrument into a body, the instrument comprising a handlea a sheath with a lumen, a proximal portion and a distal end, the proximal portion of the sheath coupled to the handle, and a retrieval assembly comprising a plurality of legs, said retrieval assembly further comprising a bulbous proximal portion and a bulbous distal portion, the distal portion of said retrieval assembly for capturing material in a body when the distal portion extends from the distal end of the sheath, the retrieval assembly expanding when the distal and proximal portions of the retrieval assembly extend beyond the distal end of the sheath; extending the distal portion of the retrieval assembly beyond the distal end of the sheath; and capturing material within the retrieval assembly.
25. The method of claim 24 further comprising the steps of: extending the distal and proximal portions of the retrieval assembly beyond the distal end of the sheath; releasing the material from the retrieval assembly; withdrawing the distal and proximal portions of the retrieval assembly into the lumen of the sheath; and withdrawing the medical instrument from the body.
26. The method of claim 24 further comprising the step of: extending the proximal portion of the retrieval assembly beyond the distal end of the sheath and capturing material within the retrieval assembly.
27. A medical instrument, comprising: a proximal handle; a sheath including a proximal portion and a distal end, the proximal portion of the sheath coupled to the handle; and a retrieval assembly comprising a plurality of loops, said loops being joined at a base of said retrieval assembly and unattached at the opposite end of said retrieval assembly, said loops comprising a proximal straight portion, and a distal curved portion , the distal portion of said retrieval assembly for capturing material in a body when the distal portion of the retrieval assembly extends from the distal end of the sheath and the proximal portion of the retrieval assembly is collapsed within the sheath, the retrieval assembly expanding to release captured material when the distal and proximal portions of the retrieval assembly extend from the distal end of the sheath.
PCT/US2000/021348 1999-08-06 2000-08-04 Medical retrieval device with releasable retrieval basket WO2001010290A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU64000/00A AU6400000A (en) 1999-08-06 2000-08-04 Medical retrieval device with releasable retrieval basket

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/369,226 1999-08-06
US09/369,226 US6348056B1 (en) 1999-08-06 1999-08-06 Medical retrieval device with releasable retrieval basket

Publications (4)

Publication Number Publication Date
WO2001010290A2 WO2001010290A2 (en) 2001-02-15
WO2001010290A3 WO2001010290A3 (en) 2001-08-30
WO2001010290B1 true WO2001010290B1 (en) 2001-09-27
WO2001010290A9 WO2001010290A9 (en) 2001-10-18

Family

ID=23454627

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/021348 WO2001010290A2 (en) 1999-08-06 2000-08-04 Medical retrieval device with releasable retrieval basket

Country Status (3)

Country Link
US (1) US6348056B1 (en)
AU (1) AU6400000A (en)
WO (1) WO2001010290A2 (en)

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