WO1995018568B1 - Bone marrow biopsy needle - Google Patents

Bone marrow biopsy needle

Info

Publication number
WO1995018568B1
WO1995018568B1 PCT/US1995/000662 US9500662W WO9518568B1 WO 1995018568 B1 WO1995018568 B1 WO 1995018568B1 US 9500662 W US9500662 W US 9500662W WO 9518568 B1 WO9518568 B1 WO 9518568B1
Authority
WO
WIPO (PCT)
Prior art keywords
biopsy needle
tube
outer tube
prising
inner tube
Prior art date
Application number
PCT/US1995/000662
Other languages
French (fr)
Other versions
WO1995018568A1 (en
Filing date
Publication date
Priority claimed from US08/178,576 external-priority patent/US5522398A/en
Application filed filed Critical
Priority to MX9602544A priority Critical patent/MX9602544A/en
Priority to CA002180575A priority patent/CA2180575C/en
Priority to DE69526329T priority patent/DE69526329T2/en
Priority to AU18673/95A priority patent/AU686764B2/en
Priority to JP7518717A priority patent/JPH09510630A/en
Priority to EP95910866A priority patent/EP0738126B1/en
Priority to AT95910866T priority patent/ATE215797T1/en
Publication of WO1995018568A1 publication Critical patent/WO1995018568A1/en
Publication of WO1995018568B1 publication Critical patent/WO1995018568B1/en

Links

Abstract

This invention is an improved biopsy needle having an outer cannula (12), an inner tube (14) and a stylet (20). The distal end of the inner tube (14) is provided with a snare (16) in the form of a coil extending from the inner tube. The free end of the coil is adhered to the inner surface of the outer cannula.

Claims

AMENDED CLAIMS[received by the International Bureau on 26 June 1995 (26.06.95); original claims 1, 2, 5, 8, 10, 13 and 15 amended; new claims 18-23 added; remaining claims unchanged (4 pages)]
1. A biopsy needle for removal of tissue from a patient, comprising: an outer tube having a proximal and a distal end; an inner tube within said outer tube, said inner tube having a proximal and a distal end; a snare having two ends, one of said ends connect¬ ed to said inner tube and the other of said ends coupled to said outer tube, said snare having a first and a second position, wherein in said first position, said snare has a first diameter and wherein in said second position, said snare has a second diameter smaller than said first diame¬ ter, said snare being moved from said first position to said second position by rotation of said inner tube with respect to said outer tube.
2. A biopsy needle as in claim 1, wherein said snare is a coil.
3. A biopsy needle as in claim 2, wherein said coil is integral with said inner tube.
4. A biopsy needle as in claim 3, further com¬ prising a stylet within said inner tube, said stylet extend- ing beyond said distal end of said outer tube.
5. A biopsy needle as in claim , wherein said stylet has a distal end, said distal ends of said stylet and said outer tube being sloped with respect to a transverse direction.
6. A biopsy needle as in claim 2, further com¬ prising a handle, said handle being attached to said proxi¬ mal end of said outer tube, said handle having a lever, said lever being attached to said proximal end of said inner tube such that movement of said lever causes rotation of said inner tube.
7. ' A biopsy needle as in claim 1 wherein the other of said snare ends comprises a cylindrical member.
8. A reusable biopsy needle, comprising: an outer tube; an inner tube within said outer tube, said inner tube having at one end a portion capable of increasing and decreasing in diameter substantially free of plastic defor¬ mation, said portion extending within and coupled to said outer tube.
9. A biopsy needle as in claim 8, further com¬ prising a means for rotating said inner tube with respect to said outer tube.
10. A biopsy needle as in claim 8, further com¬ prising a handle irrotatably engaged to said outer tube, said handle having said means for rotating said inner tube mounted thereon.
11. A biopsy needle as in claim 10, wherein said outer tube has a first inner diameter over a first portion thereof and a second inner diameter smaller than said first inner diameter over a second portion thereof, said first inner diameter being dimensioned to accommodate said inner tube.
12. A biopsy needle as in claim 11, wherein said outer tube has a distal end, said second portion being at said distal end.
13. A biopsy needle, comprising: an outer tube; an inner tube within said outer tube, said inner tube having at one end a portion capable of increasing and decreasing in diameter substantially free of plastic deformation; a cylindrical member connected to said por¬ tion; said cylindrical member being coupled to said outer tube.
14. A biopsy needle as in claim 13, further com¬ prising a means for rotating said inner tube with respect to said outer tube.
15. A biopsy needle as in claim 14, further com- prising a handle irrotatably engaged to said outer tube, said handle having said means for rotating said inner tube mounted thereon.
16. A biopsy needle as in claim 15, wherein said outer tube has a first inner diameter over a first portion thereof and a second inner diameter smaller than said first inner diameter over a second portion thereof, said first inner diameter being dimensioned to accommodate said inner tube.
17. A biopsy needle as in claim 16, wherein said outer tube has a distal end, said second portion being at said distal end.
18. A biopsy needle as in claim 1, further com¬ prising means for selectively attaching and detaching said inner and outer tubes.
19. A biopsy needle as in claim 18, wherein said means for selectively attaching and detaching said inner and outer tubes comprises a tab on one of said inner and outer tubes, the other of said inner and outer tubes having a hole.
20. A biopsy needle as in claim 8, further com¬ prising means for selectively attaching and detaching said inner and outer tubes.
21. A biopsy needle as in claim 20, wherein said means for selectively attaching and detaching said inner and outer tubes comprises a tab on one of said inner and outer tubes, the other of said inner and outer tubes having a hole.
22. A biopsy needle as in claim 13, further com¬ prising means for selectively attaching and detaching said inner and outer tubes.
23. A biopsy needle as in claim 22, wherein said means for selectively attaching and detaching said inner and outer tubes comprises a tab on one of said inner and outer tubes, the other of said inner and outer tubes having a hole.
PCT/US1995/000662 1994-01-07 1995-01-06 Bone marrow biopsy needle WO1995018568A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
MX9602544A MX9602544A (en) 1994-01-07 1995-01-06 Bone marrow biopsy needle.
CA002180575A CA2180575C (en) 1994-01-07 1995-01-06 Bone marrow biopsy needle
DE69526329T DE69526329T2 (en) 1994-01-07 1995-01-06 BONE MARROW BIOPSY NEEDLE
AU18673/95A AU686764B2 (en) 1994-01-07 1995-01-06 Bone marrow biopsy needle
JP7518717A JPH09510630A (en) 1994-01-07 1995-01-06 Bone marrow needle
EP95910866A EP0738126B1 (en) 1994-01-07 1995-01-06 Bone marrow biopsy needle
AT95910866T ATE215797T1 (en) 1994-01-07 1995-01-06 BONE MARROW BIOPSY NEEDLE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/178,576 US5522398A (en) 1994-01-07 1994-01-07 Bone marrow biopsy needle
US178,576 1994-01-07

Publications (2)

Publication Number Publication Date
WO1995018568A1 WO1995018568A1 (en) 1995-07-13
WO1995018568B1 true WO1995018568B1 (en) 1995-07-27

Family

ID=22653094

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/000662 WO1995018568A1 (en) 1994-01-07 1995-01-06 Bone marrow biopsy needle

Country Status (14)

Country Link
US (2) US5522398A (en)
EP (1) EP0738126B1 (en)
JP (1) JPH09510630A (en)
AT (1) ATE215797T1 (en)
AU (1) AU686764B2 (en)
CA (1) CA2180575C (en)
DE (1) DE69526329T2 (en)
ES (1) ES2174938T3 (en)
IL (1) IL112274A (en)
MX (1) MX9602544A (en)
NZ (1) NZ281756A (en)
TW (1) TW283077B (en)
WO (1) WO1995018568A1 (en)
ZA (1) ZA95109B (en)

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