EP0868882A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Biopsy surgical appliance
Assignee: Cardinal Health 200 LLC
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Filing: 1998-03-21
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Granted: —
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Expires: 2018-03-21
Abstract
Abstract A biopsy surgical appliance comprises a needle for biopsy consisting of two components called stylet (21) and a cannula (31), which are disposed coaxially along an axis (Y) and are activated by a mechanical device with two slides (20, 30) which can slide longitudinally inside a shell (10, 50), in which the first slide (20) of the said two slides (20, 30) has a "U" shape with tines (22a, 22b) which are oriented longitudinally and is moved longitudinally in a first operative environment, in which the central section (22c) of the said "U" shape supports a component (21) of the said two components (21, 31) which constitute the needle for biopsy (21, 31), in which the second slide (30) of the said two slides (20, 30) has a head (32) which extends towards and beyond the said axis (Y) without interfering with the said first operative environment and is inserted freely between the tines (22a, 22b) of the said first slide (20), and in which the said head (32) supports the other component (31) of the said two components (21, 31) which constitute the needle for biopsy (21, 31).
Inventors
- 👤 Alberto Bauer
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 05:49
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B10/0266; A61B10/0275; A61B2010/0208
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
367 words
Biopsy surgical appliance, comprising a needle for biopsy consisting of two
components called stylet and cannula which are disposed coaxially and
extend axially along an axis (Y), and of a shell to be grasped, in which the
said needle for biopsy has a free front portion which is designed to be
inserted in the collection area, and another, rear portion which is
associated with a mechanical device for automation of the collection
operations and is disposed inside the said shell, in which the said
mechanical device has two slides which can slide longitudinally inside the
said shell and are designed to support the rear portions of the said stylet
and the said cannula, in which there are provided resilient means which
are designed to load resiliently and longitudinally the said two slides, in
`which there are provided coupling/release means designed to retain in the
armed position and release the said two slides, in which there are
provided loading means designed to bring the said two slides into the
armed position, and in which there are provided control means to release
the said two slides from their armed position, characterised in that the first
slide (20; 120) of the said two slides (20, 30; 120, 130) has a "U" shape
with tines (22a, 22b; 122a, 122b) which are oriented longitudinally and is
moved longitudinally in a first operative environment; in that the central
section (22c; 122c) of the said "U" shape supports the rear portion of one
component (21; 131) of the said two components (21, 31; 121, 131) which
constitute the needle (21, 31; 121, 131) for biopsy; in that the second
slide (30; 130) of the said two slides (20, 30; 120, 130) has a head (32;
132) which extends towards and beyond the said axis (Y) without
interfering with the said first operative environment of the first slide (20;
120) and is inserted freely between the tines (22a, 22b; 122a, 122b) of
the said first slide (20; 120); and in that the said head (32; 132) supports
the rear portion of the other component (31; 121) of the said two
components (21, 31; 121, 131) which constitute the needle (21, 31; 121,
131) for biopsy.
Claim 2
Dependent Claim
132 words
Biopsy surgical appliance according to claim 1, characterised in that the
first slide (20) of the said two slides (20, 30) has a "U" shape with tines
(22a, 22b) which are oriented longitudinally and is moved in a first
operative environment `which extends longitudinally; in that the central
section (22c) of the said "U" shape supports the rear portion of the stylet
(21); in that the second slide (30) of the said two slides (20, 30) has a
head (32) which extends towards and beyond the said axis (Y) without
interfering with the said first operative environment of the first slide (20)
and is inserted freely between the tines (22a, 22b) of the said first slide
(20); and in that the said head (32) supports the rear portion of the
cannula (31).
Claim 3
Dependent Claim
133 words
Biopsy surgical appliance according to claim 1, characterised in that the
first slide (120) of the said two slides (120, 130) has a "U" shape with
tines (122a, 122b) which are oriented longitudinally and is moved in a first
operative environment which extends longitudinally; in that the central
section (122c) of the said "U" shape supports the rear portion of the
cannula (131); in that the second slide (130) of the said two slides (120,
130) has a head (132) which extends towards and beyond the said axis
(Y) without interfering with the said first operative environment of the first
slide (120) and is inserted freely between the tines (122a, 122b) of the
said first slide (120); and in that the said head part (132) supports the rear
portion of the stylet (121).
Claim 4
Dependent Claim
95 words
Biopsy surgical appliance according to claim 2, characterised in that the
said first slide (20) is maintained in the armed position by first
coupling/release means (58); in that the said second slide (30) is
maintained in the armed position by second coupling/release means (74a,
74b); in that the said control means (46) act on the said first
coupling/release means (58) releasing the said first slide (20); and in that before its end of advance travel, the said first slide (20) acts on the said
second coupling/release means (74a, 74b) releasing the said second
slide (30).
Claim 5
Dependent Claim
159 words
Biopsy surgical appliance according to claim 4, characterised in that the
said first coupling/release means (58) comprise a flexible tab (59)
contained in the shell (50), which supports two lateral shoulders (60a,
60b) which extend longitudinally and perpendicularly to the said flexible
tab (59), and define two coupling teeth (61a, 61b); in that in the armed
position, the said first slide (20) places the central section (22c) of the
said "U" against the said two coupling teeth (61a, 61b); and in that the
said control means have a branch (46) which has a wedge-shaped
tapered end, which is inserted between the said two shoulders (60a, 60b)
and between the tab (59) and the said central section (22c) of the first
slide (20), in order to bend the said tab (59) towards the exterior, with
consequent displacement towards the exterior of the corresponding
coupling teeth (61a, 61b), in order to obtain release or uncoupling of the
said first slide (20).
Claim 6
Dependent Claim
186 words
Biopsy surgical appliance according to claim 4, characterised in that the
said second coupling/release means (74a, 74b) comprise two flexible tabs
(66a, 66b) contained in the shell (50), each of which has two transversely
adjacent projections (67a, 68a; 67b, 68b), in which those which are
transversely external (68a, 68b) have at their rear inclined planes (69a,
69b) which are oriented from the exterior towards the interior and from the
rear towards the front of the shell (50), and those which are transversely
internal (67a, 67b) have coupling teeth (70a, 70b); in that the said second
slide (30) is provided with two fins (34a, 34b) which are transversely
opposite, which in the armed position are coupled against the said two
coupling teeth (70a, 70b); and in that the said first slide (20) has two front
feet (25a, 25b), which before the end of advance travel of the first slide
(20) abut the said inclined planes (69a, 69b) and bend the tabs (66a, 66b)
towards the exterior, with consequent displacement towards the exterior of
the coupling teeth (70a, 70b) and corresponding release or uncoupling of
the slide (30).
Claim 7
Dependent Claim
93 words
Biopsy surgical appliance according to any one of claims 3 to 6, characterised in that the resilient means which are designed to load the
first slide (20) resiliently and longitudinally comprise two springs (13a,
13b) which extend longitudinally; in that the said two springs (13a, 13b)
are disposed in longitudinal alignment relative to the longitudinal
projection of the said two tines (22a, 22b) of the said first slide (20); and in
that the said springs (13a, 13b) are compressed between the end wall
(51) of the shell and the said first slide (20).
Claim 8
Dependent Claim
88 words
Biopsy surgical appliance according to any one of claims 3 to 7, characterised in that the resilient means which are designed to load the
second slide (30) resiliently and axially comprise a spring (49) which is
disposed longitudinally inside a channel (62) provided by the shell (50)
inside which a central body (33) of the said second slide (30) slides
longitudinally; and in that the said spring (49) is disposed and
compressed between the fixed rear wall of the said channel (62) and the
said second slide (30).
Claim 9
Dependent Claim
94 words
Biopsy surgical appliance according to claim 2, characterised in that the
said second slide (30) comprises an extension (35) which projects outside
the shell (50) and slides longitudinally along a through-slot (71) provided
in one wall of the said shell (50), in order to be able to withdraw the said
second slide (30) from the exterior, by acting on a pawl (80) which is
disposed at the free end of the said extension (35), in order to uncover
the recess (29) of the stylet (21) in which the sample of tissue collected is
accommodated.
Claim 10
Dependent Claim
53 words
Biopsy surgical appliance according to claim 9, characterised in that the
path of withdrawal of the said second slide (30) of the cannula (31) has an
amplitude such that the said second slide (30) can optionally be disposed
in the armed position by being coupled to the respective second coupling
means (68a, 68b).
Claim 11
Dependent Claim
283 words
Biopsy surgical appliance comprising a needle for biopsy consisting of two
components called stylet and cannula which are disposed coaxially and
extend axially along an axis (Y), and of a shell to be grasped, in which the
said needle for biopsy has a free front portion which is designed to be
inserted in the collection area, and another, rear portion which is
associated with a mechanical device for automation of the collection
operations and is disposed inside the said shell, in which the said
mechanical device has two slides which can slide longitudinally inside the
said shell and are designed to support the rear portions of the said stylet
and of the said cannula, in which there are provided resilient means which
are designed to load resiliently and longitudinally the said two slides, in
`which there are provided coupling/release means designed to retain in the
armed position and release the said two slides, in which there are
provided loading means designed to bring the said two slides into the
armed position, and in which there are provided control means to release
the said two slides from their armed position, characterised in that the
slide (30) which supports the rear portion of the cannula (31) comprises
an extension (35) which projects outside the shell (50) and slides
longitudinally along a through-slot (71) provided in one wall of the said
shell (50), in order to be able to withdraw the said second slide (30) from
the exterior, by acting on a pawl (80) which is disposed at the free end of
the said extension (35), in order to uncover the recess (29) of the stylet
(21) in which the sample of tissue collected is accommodated.
Claim 12
Dependent Claim
50 words
Biopsy surgical appliance according to claim 11, characterised in that the
path of withdrawal of the said slide (30) of the cannula (31) has an
amplitude such that the said slide (30) can optionally be disposed in the
armed position by being coupled to the respective coupling means (68a,
68b).
References Cited (Backward Citations)
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