CA2479339A1 - Vacuum biopsy device - Google Patents

Vacuum biopsy device Download PDF

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Publication number
CA2479339A1
CA2479339A1 CA002479339A CA2479339A CA2479339A1 CA 2479339 A1 CA2479339 A1 CA 2479339A1 CA 002479339 A CA002479339 A CA 002479339A CA 2479339 A CA2479339 A CA 2479339A CA 2479339 A1 CA2479339 A1 CA 2479339A1
Authority
CA
Canada
Prior art keywords
biopsy
biopsy device
device per
vacuum
biopsy needle
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002479339A
Other languages
French (fr)
Other versions
CA2479339C (en
Inventor
Norbert Heske
Thomas Heske
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bard Dublin ITC Ltd
Original Assignee
Individual
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
Priority claimed from DE2002112156 external-priority patent/DE10212156A1/en
Priority claimed from DE2002112139 external-priority patent/DE10212139A1/en
Priority claimed from DE20204363U external-priority patent/DE20204363U1/en
Priority claimed from DE20204361U external-priority patent/DE20204361U1/en
Priority claimed from DE20204362U external-priority patent/DE20204362U1/en
Priority claimed from DE2002112155 external-priority patent/DE10212155A1/en
Priority claimed from DE20209525U external-priority patent/DE20209525U1/en
Priority claimed from DE20209530U external-priority patent/DE20209530U1/en
Priority claimed from DE20211934U external-priority patent/DE20211934U1/en
Priority claimed from DE20215962U external-priority patent/DE20215962U1/en
Priority to CA2800959A priority Critical patent/CA2800959C/en
Application filed by Individual filed Critical Individual
Publication of CA2479339A1 publication Critical patent/CA2479339A1/en
Publication of CA2479339C publication Critical patent/CA2479339C/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
    • A61B10/02Instruments for taking cell samples or for biopsy
    • A61B10/0233Pointed or sharp biopsy instruments
    • A61B10/0283Pointed or sharp biopsy instruments with vacuum aspiration, e.g. caused by retractable plunger or by connected syringe
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
    • A61B10/02Instruments for taking cell samples or for biopsy
    • A61B10/0233Pointed or sharp biopsy instruments
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
    • A61B10/02Instruments for taking cell samples or for biopsy
    • A61B10/0233Pointed or sharp biopsy instruments
    • A61B10/0266Pointed or sharp biopsy instruments means for severing sample
    • A61B10/0275Pointed or sharp biopsy instruments means for severing sample with sample notch, e.g. on the side of inner stylet
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34Trocars; Puncturing needles
    • A61B17/3417Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • A61B17/3421Cannulas
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/03Automatic limiting or abutting means, e.g. for safety
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00Catheters; Hollow probes
    • A61M25/01Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06Body-piercing guide needles or the like
    • A61M25/065Guide needles
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/10Tube connectors; Tube couplings
    • A61M39/1055Rotating or swivel joints
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/04Devices for withdrawing samples in the solid state, e.g. by cutting
    • G01N1/08Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B10/00Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
    • A61B10/02Instruments for taking cell samples or for biopsy
    • A61B2010/0208Biopsy devices with actuators, e.g. with triggered spring mechanisms
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00477Coupling
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831Material properties
    • A61B2017/00902Material properties transparent or translucent
    • A61B2017/00911Material properties transparent or translucent for fields applied by a magnetic resonance imaging system
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831Material properties
    • A61B2017/00902Material properties transparent or translucent
    • A61B2017/00924Material properties transparent or translucent for ultrasonic waves
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/03Automatic limiting or abutting means, e.g. for safety
    • A61B2090/033Abutting means, stops, e.g. abutting on tissue or skin
    • A61B2090/036Abutting means, stops, e.g. abutting on tissue or skin abutting on tissue or skin
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/10Tube connectors; Tube couplings
    • A61M39/12Tube connectors; Tube couplings for joining a flexible tube to a rigid attachment

Abstract

The biopsy device consists of a handpiece into which a hollow biopsy needle is inserted, whereby a portion of the part of the biopsy needle projecting from the handpiece can be inserted with its sample collecting space into the tiss ue to be examined, and the tissue is drawn into the sample collecting space by means of vacuum, is subsequently separated by means of a sample separating device and is then removed. The vacuum generating device can, if required, b e used for generating an overpressure by opening a ventilation opening. In addition, the vacuum/pressure generating device (5), additional control and supply devices, and the electric devices are integrated inside the housing o f the handpiece (1), and the connecting element (4) connecting the biopsy need le (3) to the vacuum/pressure generating device (5) is directly mounted on the housing. The freedom of motion of the biopsy device is not restricted by virtue of the fact that the operation board is mounted on the housing and th e electrical units are placed inside the housing. The device can be operated using one hand. The device combines the advantages of high-speed biopsy pistols with the advantages of vacuum biopsy and provides the pathologist wi th improved samples for analysis.

Claims (47)

1. Biopsy device for taking tissue samples, consisting of a hand piece, in which a hollow biopsy needle is inserted, wherein one part of the part of the biopsy needle that protrudes beyond the hand piece is introduced with its sample removal chamber into the tissue being studied and the tissue is sucked into the sample removal chamber by vacuum and then separated by means of a sample separation mechanism and afterwards removed, characterized in that the tension slide is brought into a cocked position by means of electric motor power against the action of a spring, the needle unit is arranged on the tension slide mounted in the hand piece, and the sample removal chamber is shot into the tissue after releasing the cocked tension slide, the vacuum pressure-generating device (5) as well as other control and supply devices are integrated in the housing of the hand piece (1), and the connection element (4) between the biopsy needle (3) and the vacuum pressure-generating unit (5) is arranged directly on the housing, the vacuum pressure-generating device (5) consists of a controllable piston/cylinder unit (69), which has a ventilation opening (67), so that excess pressure can be produced in the vacuum pressure-generating device for ejection of the sample, all actuators are electrically operated and the actuator for the tension slide is also used as actuator of the cutting sheath, the hollow biopsy needle is surrounded by an outer coaxial cutting sheath, and a board for activating the electronics is arranged on the front side of the housing, in which the tension slide release is integrated.
2. Biopsy device per claim 1, characterized in that the vacuum pressure-generating device (5) is a syringe/plunger unit having a ventilation opening (67) in the upper part, which is opened to dissipate the vacuum by retraction of the syringe plunger (54).
3. Biopsy device per claim 1 and 2, characterized in that the plunger (54) of the vacuum pressure-generating device (5) can move in both directions by means of a controllable spindle actuator (53, 48).
4. Biopsy device per claim 3, characterized in that a high-speed electric DC
motor (58) with secondary planet gearing is used as actuator for the controllable spindle drive (53, 48).
5. Biopsy device per claim 4, characterized in that the transmission from the planet gearing to the plunger spindle (53) occurs via a single-stage gearing, and the threaded spindle nut (48) mounted on the syringe cylinder carries a toothed crown (55) on the outside.
6. Biopsy device per claim 1-4, characterized in that the plunger (54) for generating a vacuum in the system and in the sample removal chamber is moved in a first step from the syringe bottom (52) to just in front of the ventilation opening (67).
7. Biopsy device per claim 1-4, characterized in that, in order to ventilate the system, the plunger (54) in a second step following the first step is pulled back beyond the ventilation opening (67), and after the vacuum is dissipated it travels back again to close the ventilation borehole.
8. Biopsy device per claim 1-4, characterized in that the plunger (54) in a third step following the second step is moved in the direction of the syringe bottom (52) in order to create an excess pressure in the sample removal chamber.
9. Biopsy mechanism per claim 1, characterized in that the electric gear motor (58) of the piston/cylinder unit (69) is controlled by measuring the speed of revolution such that the plunger (54) in a first step is withdrawn from the cylinder until just before the ventilation opening (67), in a second step the ventilation borehole (67) is cleared and after the vacuum is dissipated the ventilation borehole is closed again, and in a third step it moves in opposite direction to create the excess pressure toward the syringe bottom (51), coordinated with the controlling of the sample removal and the ejecting of the sample.
10. Biopsy device per claim 1, characterized in that the speed of revolution of the DC
motors is measured by a photocell permanently arranged on the motor housing and a pickup arranged on the motor shaft.
11. Biopsy device per claim 10, characterized in that the speed of revolution of the motor is compared against a nominal value previously stored in the electronics and used to trigger the control of the spindle actuation.
12. Biopsy device per claim 1, characterized in that the inner space of the hollow biopsy needle (2) is connected to the inner space of the vacuum/pressure device (5) by a connection piece (4) so that no air can flow in from outside during partial vacuum or flow out during excess pressure.
13. Biopsy device per claim 12, characterized in that the connection piece (4) is a flexible hose, arranged in direct proximity to the hand piece (1).
14. Biopsy device according to one or more of the preceding claims, characterized in that the biopsy needle carrier (37) with the round, hollow biopsy needle (2) and the cutting sheath (3), likewise round in cross section and coaxially surrounding the biopsy needle, as well as parts of the actuator, the connection element (4) and the vacuum pressure-generating device (5), form a removable interchangeable element (20), which can be inserted into the hand piece (1).
15. Biopsy device per claim 14, characterized in that the removable biopsy needle carrier (37) can be inserted into the brackets (40) of the tension slide (28) by means of the recesses (77).
16. Biopsy device per claim 1, characterized in that the tension slide (28) is placed in the cocked position by a spindle actuator (73, 75), driven by means of a DC gear motor (21 ) with single-stage secondary transmission (23, 74).
17. Biopsy device per claim 17, characterized in that the tension slide (28) can be mechanically locked in the cocked position.
18. Biopsy device according to one or more of claims 14-17, characterized in that a toothed roller (23) is placed on the take-off shaft of the planet transmission connected to the DC gear motor, which engages with the gear (74) of the spindle actuator (73, 75}
connected to the cutting sheath (3).
19. Biopsy device per claim 18, characterized in that the gear (74) mounted on the spindle actuator (73), (75), thrusts against a holder (36) of the base block (8) during displacement of the tension slide (28).
20. Biopsy device per claim 1 and 14, characterized in that the biopsy needle (2) with coaxial cutting sheath (3) and other elements arranged thereon are held at two bearing points (75, 49) in the biopsy needle carrier (37) so that the biopsy needle (2) and/or the cutting sheath (3) can turn individually.
21. Biopsy device per claim 1 and 14, characterized in that the piston/cylinder unit (69) is designed such that a vacuum generated in the sample removal chamber (71) on the order of 200 hph is established in the system consisting primarily of the cavity/piston/cylinder unit (69), the hollow biopsy needle (2) and the hollow connection piece (4).
22. Biopsy device per claim 1 and 14, characterized in that the cross section of the biopsy needle has a narrowing (79) in front of the sample removal chamber, which covers the opening of the cross section of the sample removal chamber from above.
23. Biopsy device per claim 22, characterized in that the narrowing comprises 60-75% of the cross section and the narrowing projects into the cross section from above.
24. Biopsy device per claim 23, characterized in that the narrowing is a stopper around 10 mm in length.
25. Biopsy device per claim 1 and 14, characterized in that the narrowing is formed as a lip or dog protruding into the cross section.
26. Biopsy device per claim 1 and 14, characterized in that only around 25% of the cross section of the sample removal chamber (71) is open at the top.
27. Biopsy device per claim 20, characterized in that the threaded spindle nut (75) of the threaded spindle casing (73) is press-fitted into the biopsy needle carrier (37) and forms one of the two bearing points.
28. Biopsy device per claim 1, characterized in that a base block (8) is arranged in the center of the inner housing, serving as fastening, as well as support, bearing and holding of the individual components such as tension slide (28), biopsy needle carrier (37), vacuum pressure-generating device (3) and actuating devices (105, 106).
29. Biopsy device per claim 1, characterized in that a miniature switch (18) is integrated in the end cover (7) of the housing serving as the bearing of the vacuum/pressure device (5) at the housing, the activation of which enables the power supply.
30. Biopsy device per claim 29, characterized in that the switch pin (19) of the miniature switch (18) is activated by pressing down the vacuum pressure-generating device (5) by means of the housing cover (10).
31. Biopsy device per claim 1 and 14, characterized in that means are provided on the biopsy needle carrier (37) to prevent a closing of the housing cover (10) when the tension slide is cocked and the biopsy needle carrier is installed, or an opening of the housing cover when the housing is closed.
32. Biopsy device per claim 1, characterized in that surfaces are provided on the housing for attaching the hand piece to a positioning mechanism.
33. Biopsy device per claim 1 and 14, characterized in that the upper outer contour of the biopsy needle carrier (37) corresponds to the inner contour of the housing.
34. Biopsy device per claim 1 and 14, characterized in that a plastic part (47) with knurled disk (80) is mounted by friction locking on the right end (proximal end) of the biopsy needle (2).
35. Biopsy device per claim 1 and 14, characterized in that the plastic part (47) has a polygon (50), which interacts with the biopsy needle carrier (37) and which, when turned by means of the knurled disk (80), locks the biopsy needle (2) and thus the sample removal chamber (71) in the selected position in the biopsy needle carrier (37).
36. Biopsy device per claim 28, characterized in that the space for the gear motors is separated at the top from the other space by a cover (46) connected to the base block (8).
37. Biopsy device per claim 1 and 28, characterized in that the battery space is separated at the top by a separation plate (144) from the rest of the space.
38. Biopsy device per claim 17, characterized in that a double-arm lever (33) which can be adjusted about an axis (35) under spring pressure is used, one arm (100) of which is acted upon by a compression spring (34), and its other arm (99) engages with a recess (82) of the tension slide (28).
39. Biopsy device per claim 1, characterized in that the functional displays and operating switches for the electronics are integrated in the board (Figure 7).
40. Biopsy device per claim 1, characterized in that the connection element (4) is connected to the biopsy needle (2) by a plastic part (112) which is able to rotate in the plastic part (47).
41. Biopsy device per claim 40, characterized in that the plastic part (112) is sealed off against the plastic part (47) by means of an O-ring.
42. Biopsy device per claim 14, characterized in that the removable element (20) is a sterile packaged unit.
43. Biopsy device per claim 14, characterized in that the biopsy needle carrier (37) and the vacuum pressure-generating device (5) are embraced by brackets (108), (118) of an insert aid and a cross piece (109) arranged on the insert aid orients the biopsy needle carrier (37) in the lengthwise axis and the vacuum pressure-generating device is oriented in the lengthwise axis by a pin (110) engaging with it.
44. Biopsy device per claim 43, characterized in that the insert aid has two holder pieces (117) on the upper side.
45. Biopsy device per claim l, characterized in that the cutting sheath (3) is moved approximately 2 mm beyond the distal end of the sample removal chamber in the direction of the needle tip when cutting out the tissue sample.
46. Biopsy device per claim 1, characterized in that, when using a coaxial cannula for the positioning, a seal is provided at the proximal end of the coaxial cannula tube, preventing the vacuum from being dissipated when the needle is introduced.
47. Biopsy device per claim 45, characterized in that one or more spacing pieces can be inserted between the proximal bearing surface of the coaxial cannula and the distal end surface of the guide ring.
CA2479339A 2002-03-19 2003-03-17 Vacuum biopsy device Expired - Lifetime CA2479339C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2800959A CA2800959C (en) 2002-03-19 2003-03-17 Vacuum biopsy device

Applications Claiming Priority (21)

Application Number Priority Date Filing Date Title
DE10212156.7 2002-03-19
DE2002112155 DE10212155A1 (en) 2002-03-19 2002-03-19 Biopsy device consists of a handpiece, a needle, a vacuum generating unit located in the handpiece housing, a ventilation opening, and a connecting element
DE2002112156 DE10212156A1 (en) 2002-03-19 2002-03-19 Biopsy device consists of a handpiece, a needle, a vacuum generating unit located in the handpiece housing, a ventilation opening, and a connecting element
DE20204362U DE20204362U1 (en) 2002-03-19 2002-03-19 coaxial cannula
DE20204362.2 2002-03-19
DE20204363.0 2002-03-19
DE20204361U DE20204361U1 (en) 2002-03-19 2002-03-19 connecting element
DE20204363U DE20204363U1 (en) 2002-03-19 2002-03-19 biopsy device
DE10212139.7 2002-03-19
DE20204361.4 2002-03-19
DE10212155.9 2002-03-19
DE2002112139 DE10212139A1 (en) 2002-03-19 2002-03-19 Biopsy device consists of a handpiece, a needle, a vacuum generating unit located in the handpiece housing, a ventilation opening, and a connecting element
DE20209530U DE20209530U1 (en) 2002-06-19 2002-06-19 Device for intracorporeal tissue examination
DE20209525U DE20209525U1 (en) 2002-06-19 2002-06-19 Plastic coaxial cannula
DE20209525.8 2002-06-19
DE20209530.4 2002-06-19
DE20211934.3 2002-08-02
DE20211934U DE20211934U1 (en) 2002-08-02 2002-08-02 Biopsy device for taking tissue samples under vacuum
DE20215962.0 2002-10-17
DE20215962U DE20215962U1 (en) 2002-10-17 2002-10-17 Biopsy needle used for taking tissue sample for analysis, comprises handpiece with drive to extend needle into tissue with defined movements and restricted rotation, to fill sample holding zone completely irrespective of tissue structure
PCT/DE2003/000844 WO2003077767A1 (en) 2002-03-19 2003-03-17 Vacuum biopsy device

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA2800959A Division CA2800959C (en) 2002-03-19 2003-03-17 Vacuum biopsy device

Publications (2)

Publication Number Publication Date
CA2479339A1 true CA2479339A1 (en) 2003-09-25
CA2479339C CA2479339C (en) 2013-03-12

Family

ID=28047082

Family Applications (2)

Application Number Title Priority Date Filing Date
CA2800959A Expired - Lifetime CA2800959C (en) 2002-03-19 2003-03-17 Vacuum biopsy device
CA2479339A Expired - Lifetime CA2479339C (en) 2002-03-19 2003-03-17 Vacuum biopsy device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA2800959A Expired - Lifetime CA2800959C (en) 2002-03-19 2003-03-17 Vacuum biopsy device

Country Status (11)

Country Link
US (7) US8109885B2 (en)
EP (1) EP1487346B1 (en)
JP (1) JP4260024B2 (en)
CN (1) CN1655724A (en)
AT (1) ATE303099T1 (en)
AU (1) AU2003223876A1 (en)
CA (2) CA2800959C (en)
DE (2) DE50301103D1 (en)
ES (1) ES2247529T3 (en)
MX (1) MXPA04008782A (en)
WO (1) WO2003077767A1 (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN110799101A (en) * 2017-06-19 2020-02-14 云氏医疗有限公司 Biopsy needle assembly for reducing start load when switching motor direction
CN113274133A (en) * 2021-06-24 2021-08-20 哈尔滨理工大学 Mammary gland biopsy puncture robot based on MRI environment and use method thereof

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US20050203439A1 (en) 2005-09-15
JP4260024B2 (en) 2009-04-30
US20190216446A1 (en) 2019-07-18
US8109885B2 (en) 2012-02-07
CA2800959C (en) 2015-05-05
EP1487346A1 (en) 2004-12-22
CA2479339C (en) 2013-03-12
JP2005529632A (en) 2005-10-06
US8016772B2 (en) 2011-09-13
WO2003077767A1 (en) 2003-09-25
US20150342579A1 (en) 2015-12-03

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