US20050203439A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum biopsy device
Assignee: CR Bard Inc
•
Filing: 2003-03-17
•
Granted: —
•
Expires: 2023-03-17
Abstract
Abstract A biopsy device for taking tissue samples, includes a housing, a removable element and a control panel. The housing contains an electric power source and a tension slide connected to the power source. The tension slide may be brought into a cocked position against the action of a spring by the power source. The removable element is configured for insertion into the housing and includes a biopsy needle unit, a vacuum pressure-generating device and a control panel. The removable element may be provided as a sterile package unit. The biopsy needle unit can be arranged on the tension slide and includes a hollow biopsy needle with a sample removal chamber and a cutting sheath. The biopsy device can be held in one hand and is fully integrated with all components required to perform a vacuum biopsy such that no cables or lines are required to other external units.
Inventors
- 👤 Norbert Heske
- 👤 Thomas Heske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:30
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B10/0283; A61B10/0266; A61B10/0275; A61B17/00; A61B17/34; A61B17/3417; A61B17/3421; A61B90/00; A61B90/03; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/065; A61M39/00; A61M39/10; A61M39/1055; G; G01; G01N; G01N1/00; G01N1/02; G01N1/04; G01N1/08; A61B2010/0208; A61B2017/00477; A61B2017/00831; A61B2017/00902; A61B2017/00911; A61B2017/00924; A61B2090/033; A61B2090/036; A61M39/12
Claims Analysis
Total Claims: 51
Claim 1
Independent Claim
5 words
1 - 47 . (canceled)
Claim 2
Dependent Claim
5 words
1 - 47 . (canceled)
Claim 3
Dependent Claim
111 words
48 . A biopsy device for taking tissue samples, comprising: a housing containing an electric power source and a tension slide connected to the power source, wherein the tension slide is brought into a cocked position against the action of a spring by the power source; a removable element configured for insertion into the housing, comprising: a biopsy needle unit, comprising a hollow biopsy needle, having a sample removal chamber, and a cutting sheath, wherein the biopsy needle unit is arranged on the tension slide; a vacuum pressure-generating device; and a connection element connecting the biopsy needle unit and the vacuum pressure-generating device; and a control panel attached to the housing.
Claim 4
Dependent Claim
111 words
48 . A biopsy device for taking tissue samples, comprising: a housing containing an electric power source and a tension slide connected to the power source, wherein the tension slide is brought into a cocked position against the action of a spring by the power source; a removable element configured for insertion into the housing, comprising: a biopsy needle unit, comprising a hollow biopsy needle, having a sample removal chamber, and a cutting sheath, wherein the biopsy needle unit is arranged on the tension slide; a vacuum pressure-generating device; and a connection element connecting the biopsy needle unit and the vacuum pressure-generating device; and a control panel attached to the housing.
Claim 5
Dependent Claim
55 words
49 . The biopsy device according to claim 48 , wherein the vacuum pressure-generating device comprises a syringe unit having a cylindrical housing and a plunger positioned in the housing, the housing having a ventilation opening in an upper part thereof which may be opened to dissipate a created vacuum by retraction of the plunger.
Claim 6
Dependent Claim
29 words
50 . The biopsy device according to claim 49 , wherein the plunger is movable in a forward and a reverse direction by means of a controllable spindle actuator.
Claim 7
Dependent Claim
35 words
51 . The biopsy device according to claim 50 , further comprising at least one DC motor with secondary planet gearing contained within the housing, wherein the controllable spindle actuator is powered by the motor.
Claim 8
Dependent Claim
41 words
52 . The biopsy device according to claim 51 , wherein the transmission from the planet gearing to the spindle occurs via a single-stage gearing, and wherein a threaded spindle nut mounted on the syringe unit housing carries a toothed crown.
Claim 9
Dependent Claim
122 words
53 . The biopsy device according to claim 52 , wherein the motor with secondary planet gearing is controlled by measuring the speed of revolution such that the plunger in a first step is moved from a distal end of the housing to a first point adjacent but distal the ventilation opening, in a second step is moved first proximal the ventilation opening to open the ventilation opening and dissipate the created vacuum and then distal back to the first point to close the ventilation opening, and in a third step is moved in a distal direction to create excess pressure, the first, second and third steps being coordinated with the controlling of the sample removal and the ejecting of the sample.
Claim 10
Dependent Claim
37 words
54 . The biopsy device according to claim 53 , wherein the speed of revolution of the motor is measured by a photocell permanently arranged on a motor housing and a pickup arranged on a motor shaft.
Claim 11
Dependent Claim
42 words
55 . The biopsy device according to claim 54 , wherein the speed of revolution of the motor is compared against a nominal value previously stored in electronic components of the biopsy device and used to trigger control of the spindle actuator.
Claim 12
Dependent Claim
51 words
56 . The biopsy device according to claim 49 , wherein the plunger for generating a vacuum in the system and in the sample removal chamber is moved in a first step in a proximal direction from the housing distal end to a first point adjacent but distal the ventilation opening.
Claim 13
Dependent Claim
49 words
57 . The biopsy device according to claim 56 , wherein in order to ventilate the system, the plunger in a second step is moved to a second point proximal the ventilation opening, and wherein after the vacuum is dissipated the plunger is moved back to the first point.
Claim 14
Dependent Claim
33 words
58 . The biopsy device according to claim 57 , wherein the plunger in a third step is moved in a distal direction to create an excess pressure in the sample removal chamber.
Claim 15
Dependent Claim
41 words
59 . The biopsy device according to claim 48 , wherein an inner space of the hollow biopsy needle is connected to an inner space of the vacuum pressure-generating device by the connection element such that an airtight connection is established.
Claim 16
Dependent Claim
18 words
60 . The biopsy device according to claim 59 , wherein the connection piece comprises a flexible hose.
Claim 17
Dependent Claim
34 words
61 . The biopsy device according to claim 48 , wherein the control panel is connected to a plurality of actuators, wherein a first actuator controls both the tension slide and the cutting sheath.
Claim 18
Dependent Claim
27 words
62 . The biopsy device according to claim 48 , wherein the biopsy needle unit comprises recesses that are configured to receive brackets on the tension slide.
Claim 19
Dependent Claim
36 words
63 . The biopsy device according to claim 48 , wherein the tension slide is placed in a cocked position by a spindle actuator driven by means of a DC gear motor with single-stage secondary transmission.
Claim 20
Dependent Claim
22 words
64 . The biopsy device according to claim 63 , wherein the tension slide can be mechanically locked in the cocked position.
Claim 21
Dependent Claim
48 words
65 . The biopsy device according to claim 64 , further comprising a double-arm lever, which can be adjusted about an axis under spring pressure, wherein a first arm is acted upon by a compression spring, and a second arm engages with a recess of the tension slide.
Claim 22
Dependent Claim
44 words
66 . The biopsy device according to claim 64 , wherein a toothed roller is placed on a take-off shaft of a planet transmission connected to the DC gear motor, which engages with a gear of a spindle actuator connected to the cutting sheath.
Claim 23
Dependent Claim
31 words
67 . The biopsy device according to claim 66 , wherein the gear of the spindle actuator thrusts against a holder of a base block during displacement of the tension slide.
Claim 24
Dependent Claim
21 words
68 . The biopsy device according to claim 52 , wherein the cutting sheath is coaxially positioned around the biopsy needle.
Claim 25
Dependent Claim
46 words
69 . The biopsy device according to claim 68 , wherein the biopsy needle with coaxial cutting sheath and other elements arranged thereon are held at two bearing points in the biopsy needle unit so that the biopsy needle and/or the cutting sheath can turn individually.
Claim 26
Dependent Claim
30 words
70 . The biopsy device according to claim 69 , wherein the threaded spindle nut is press-fitted into the biopsy needle unit and forms one of the two bearing points.
Claim 27
Dependent Claim
34 words
71 . The biopsy device according to claim 49 , wherein the syringe unit is designed such that a vacuum is generated in the sample removal chamber on the order of approximately 200 hph.
Claim 28
Dependent Claim
55 words
72 . The biopsy device according to claim 48 , wherein the biopsy needle comprises a narrowing positioned in a lumen of the biopsy needle at a proximal end of the sample removal chamber, the narrowing being positioned at a top portion of the lumen, leaving a passage at a bottom portion of the lumen.
Claim 29
Dependent Claim
22 words
73 . The biopsy device according to claim 72 , wherein the narrowing comprises 60-75% of the cross section of the lumen.
Claim 30
Dependent Claim
23 words
74 . The biopsy device according to claim 72 , wherein the narrowing comprises a stopper having a length of approximately 10 mm.
Claim 31
Dependent Claim
28 words
75 . The biopsy device according to claim 25 , wherein the narrowing is formed as a lip or dog protruding into the cross section of the lumen.
Claim 32
Dependent Claim
29 words
76 . The biopsy device according to claim 48 , wherein an opening of the sample removal chamber comprises approximately 25% of the cross section of the biopsy needle.
Claim 33
Dependent Claim
31 words
77 . The biopsy device according to claim 48 , wherein a miniature switch is integrated into an end cover of the housing, the activation of which enables the power source.
Claim 34
Dependent Claim
30 words
78 . The biopsy device according to claim 77 , wherein a switch pin of the miniature switch is activated when a housing cover presses down the vacuum pressure-generating device.
Claim 35
Dependent Claim
39 words
79 . The biopsy device according to claim 48 , wherein means are provided on the biopsy needle unit to prevent closing of a housing cover when the tension slide is cocked and the biopsy needle unit is installed.
Claim 36
Dependent Claim
26 words
80 . The biopsy device according to claim 48 , wherein surfaces are provided on the housing for attaching the biopsy device to a positioning mechanism.
Claim 37
Dependent Claim
28 words
81 . The biopsy device according to claim 48 , wherein an upper outer contour of the biopsy needle unit corresponds to an inner contour of the housing.
Claim 38
Dependent Claim
30 words
82 . The biopsy device according to claim 48 , wherein a plastic part with knurled disk is mounted by friction locking onto a proximal end of the biopsy needle.
Claim 39
Dependent Claim
53 words
83 . The biopsy device according to claim 82 , wherein the plastic part comprises a polygon, which interacts with the biopsy needle unit and which, when turned by means of the knurled disk, locks the biopsy needle and thus the sample removal chamber in the selected position in the biopsy needle unit.
Claim 40
Dependent Claim
31 words
84 . The biopsy device according to claim 48 , wherein a base block is positioned in the center of the housing to support and hold components of the biopsy device.
Claim 41
Dependent Claim
26 words
85 . The biopsy device according to claim 84 , wherein space for a gear motor is separated by a cover connected to the base block.
Claim 42
Dependent Claim
27 words
86 . The biopsy device according to claim 84 , wherein space for the power source is separated by a separation plate connected to the base block.
Claim 43
Dependent Claim
27 words
87 . The biopsy device according to claim 48 , wherein the control panel comprises functional displays and operating switches for electronic components of the biopsy device.
Claim 44
Dependent Claim
36 words
88 . The biopsy device according to claim 48 , wherein the connection element is connected to the biopsy needle by a first plastic part which is able to rotate with respect to the connection element.
Claim 45
Dependent Claim
30 words
89 . The biopsy device according to claim 88 , further comprising a second plastic part that is sealed off against the first plastic part by means of an O-ring.
Claim 46
Dependent Claim
19 words
90 . The biopsy device according to claim 48 , wherein the removable element is a sterile packaged unit.
Claim 47
Dependent Claim
62 words
91 . The biopsy device according to claim 48 , further comprising an insert aid having brackets, a cross-piece and a pin, wherein the biopsy needle unit and the vacuum pressure-generating device are embraced by the brackets, and wherein the pin and the cross-piece orient the biopsy needle unit and the vacuum pressure-generating device along a longitudinal axis of the biopsy device.
Claim 48
Dependent Claim
24 words
92 . The biopsy device according to claim 90 , wherein the insert aid further comprises two holder pieces on an upper side thereof.
Claim 49
Dependent Claim
43 words
93 . The biopsy device according to claim 48 , wherein the cutting sheath is moved approximately 2 mm beyond the distal end of the sample removal chamber in the direction of a tip of the biopsy needle when cutting the tissue sample.
Claim 50
Dependent Claim
50 words
94 . The biopsy device according to claim 48 , wherein when using a coaxial cannula for the positioning of the biopsy device, a seal is provided at the proximal end of the coaxial cannula, preventing the vacuum from dissipating when the biopsy needle is introduced into the coaxial cannula.
Claim 51
Dependent Claim
36 words
95 . The biopsy device according to claim 94 , wherein one or more spacing pieces are inserted between a proximal bearing surface of the coaxial cannula and a distal end surface of a guide ring.
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