EP0920842A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Micro-surgery fixation device, variants and manipulation push-bar for mounting the same
Assignee: Individual
•
Filing: 1997-06-27
•
Granted: —
•
Expires: 2017-06-27
Abstract
Abstract The present invention relates to medicine, more specifically to microsurgery and can find application both for dilating stenosed portions of tubular organs and blood vessels and for fixing the edges of holes in tissues or holding prostheses, e.g., when positioning occluding, valve, or filtering prosthetic appliances on parietal lesions or defects, as well as on inosculations of hollow or tubular organs. The invention makes possible extending the field of application and functional capabilities of the microsurgical fixing device, as well as to enhance its reliability and safety of its positioning. According to one of its embodiments the microsurgical fixing device appears as at least two springs each appearing as a cone frustum or a flat ring made from a Z-shaped bar that forms a closed loop. The springs are movably interconnected through the apices of zigzags which are situated on the same circle so as to provide reversible compression of the springs under the effect of external load. In an alternative embodiment of the invention the microsurgical fixing device comprises a single spring appearing as a cone frustum or a flat ring made from a Z-shaped bar forming a closed loop. The zigzag apices lying on the same circle are provided with retainers movably connected thereto, each appearing as an elastic bar provided with a hook. The manipulation pusher appears as a number of tie-members provided with slideways connected, through a coupling, to a guide-catheter. The tie-members are accommodated in the coupling and the guide-catheter longitudinally movably thereinside and with respect to the slideways.
Inventors
- 👤 Boris Petrovich Kruchinin
- 👤 Vladimir Leonidovich Karpenko
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-22 23:57
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/0057; A61B17/12; A61B17/12022; A61B17/12131; A61B17/12168; A61B17/12172; A61B2017/00575; A61B2017/00592; A61B2017/00606; A61B2017/00619; A61B2017/00623
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
159 words
A microsurgical fixing device, comprising a spring
appearing as a flexible Z-shaped bar that forms a closed loop,
CHARACTERIZED in that it further comprises at least one spring
appearing also as a flexible Z-shaped bar, each of said springs
being so arranged that its opposing apices are disposed along
the perimeters of the bases of a cone frustum or along
concentric circles that form a flat ring, while the apices of
zigzags of said Z-shaped bar in each spring located on the same
base of the cone frustum or along the same ring circle are
joined together with the apices of zigzags of a next spring
which are also arranged on the same base of the cone frustum or
along the same ring circle through joining members so as to
provide a possibility for said springs to be compressed
reversibly, and the apices of zigzags not joined together are
adapted to receive the actuating members of a positioning unit.
Claim 2
Dependent Claim
46 words
A microsurgical fixing device as set forth in claim 1,
CHARACTERIZED in that it comprises two springs, each appearing
as a cone frustum, while joined together are the apices of
zigzags located on the greater bases of the cone frustums formed
by each of the springs.
Claim 3
Dependent Claim
46 words
A microsurgical fixing device as set forth in claim 1,
CHARACTERIZED in that it comprises two springs, each appearing
as a cone frustum, while joined together are the apices of
zigzags located on the lesser bases of the cone frustums formed
by each of the springs.
Claim 4
Dependent Claim
26 words
A microsurgical fixing device as set forth in claim 3,
CHARACTERIZED in that the springs are put together with the
greater bases of the cone frustums.
Claim 5
Dependent Claim
29 words
A microsurgical fixing device as set forth in claim 4,
CHARACTERIZED in that the diameters of the greater bases of the
cone frustums formed by each spring are unequal.
Claim 6
Dependent Claim
38 words
A microsurgical fixing device as set forth in claim 4 or
claim 5, CHARACTERIZED in that angles at the greater bases of
the cone frustums formed by each of the springs, are not in
excess of 45 degrees.
Claim 7
Dependent Claim
24 words
A microsurgical fixing device as set forth in claim 1,
CHARACTERIZED in that at least one spring turn is provided at
each zigzag apex.
Claim 8
Dependent Claim
35 words
A microsurgical fixing device as set forth in claim 1,
CHARACTERIZED in that the bar from which the spring is
manufactured is made of wire having its various portions
differing in shape and cross-sectional area.
Claim 9
Dependent Claim
39 words
A microsurgical fixing device as set forth in any one of
claims 1-8, CHARACTERIZED in that each joining member appears as
a bracing ring whose size is selected so that the device may be
placed in the positioning unit.
Claim 10
Dependent Claim
23 words
A microsurgical fixing device as set forth in claim 9,
CHARACTERIZED in that the bracing ring appears as at least
single spring turn.
Claim 11
Dependent Claim
50 words
A microsurgical fixing device as set forth in any one
of claims 1-8, CHARACTERIZED in that each joining member appears
as a flexible bar provided with rings or holes at its ends, the
size of said rings being so selected that the device may be
placed in the positioning unit.
Claim 12
Dependent Claim
48 words
A microsurgical fixing device as set forth in any one
of claims 1-8, CHARACTERIZED in that each joining member appears
as a tension spring provided with rings at its ends, the size of
said rings being so selected that the device may be placed in
the positioning unit.
Claim 13
Dependent Claim
148 words
A microsurgical fixing device, comprising a spring
appearing as a flexible Z-shaped bar that forms a closed loop,
said spring being so arranged that its opposing apices are
arranged along the perimeters of the bases of a cone frustum or
along concentric circles which form a flat ring, while all the
apices of zigzags that are located on one of the bases of the
cone frustum or on one of the circles of said flat ring are
provided with retainers, each appearing as a flexible bar and
has at least one hook; each retainer is movably connected,
through the joining members, to one or two apices of zigzags so
as to provide reversible compression of the spring; all the
retainers are situated on the same side of the spring and the
free ends of the retainer bars are adapted to receive the
actuating members of the positioning unit.
Claim 14
Dependent Claim
34 words
A microsurgical fixing device as set forth in claim 13,
CHARACTERIZED in that the angle at the greater base of a cone
frustum defined by the spring, is not in excess of 45 degrees.
Claim 15
Dependent Claim
26 words
A microsurgical fixing device as set forth in claim 13,
CHARACTERIZED in that the hooks of all the retainers are
oriented away from the spring axis.
Claim 16
Dependent Claim
26 words
A microsurgical fixing device as set forth in claim 13,
CHARACTERIZED in that at least one spring turn is provided at
each of the zigzag apices.
Claim 17
Dependent Claim
45 words
A microsurgical fixing device as set forth in claim 13,
CHARACTERIZED in that the bar from which the spring is
manufactured, is made of wire having its various portions
differing in shape and cross-sectional area and is provided with
hooks, or knurling, or spring turns.
Claim 18
Dependent Claim
40 words
A microsurgical fixing device as set forth in claim 13,
CHARACTERIZED in that a hole or ring is provided at the end of
each retainer opposite to the free end thereof for movably
connecting the retainer to the joining member.
Claim 19
Dependent Claim
54 words
A microsurgical fixing device as set forth in claim 13,
CHARACTERIZED in that each joining member connecting the
retainer to one zigzag apex appears as a closed ring or a ring
with at least spring turn, the size of said rings being so
selected that the device may be placed in the positioning unit.
Claim 20
Dependent Claim
57 words
A microsurgical fixing device as set forth in claim 13,
CHARACTERIZED in that each joining member is made from a
flexible bar and appears as a symmetrically curved clip having a
back and two legs provided with rings at their ends and
connected to two adjacent zigzag apices, while the clip back is
connected to the retainer.
Claim 21
Dependent Claim
41 words
A microsurgical fixing device as set forth in claim 20,
CHARACTERIZED in that the clip back has at least one spring turn
movably connected to the ring or hole provided at the retainer
bar end opposite to the free end thereof.
Claim 22
Dependent Claim
43 words
A microsurgical fixing device as set forth in claim 13,
CHARACTERIZED in that each retainer has the free end of its bar
adapted to receive the actuating members of the positioning
unit, is provided with a hole, or ring, or projection, or
recess.
Claim 23
Dependent Claim
28 words
A microsurgical fixing device as set forth in claim 13,
CHARACTERIZED in that the retainer hook is fitted on a sleeve
fixed in position on the retainer bar.
Claim 24
Dependent Claim
35 words
A microsurgical fixing device as set forth in claim 13,
CHARACTERIZED in that the retainer hook is provided on a sleeve
which is movable over the retainer bar from the initial to the
fixing position.
Claim 25
Dependent Claim
25 words
A microsurgical fixing device as set forth in any one
of claims 13-24, CHARACTERIZED in that each joining member has
at least one further hook.
Claim 26
Dependent Claim
119 words
A manipulation pusher, comprising a number of tie-members,
each being adapted to join to the components of the
present microsurgical device, CHARACTERIZED in that it further
comprises slideways in a number equal to that of tie-members,
and a guide-catheter connected, through a coupling, to the
slideways secured thereon; each tie-member is longitudinally
movable inside the coupling and the guide-catheter with regard
to its respective slideway, the length of each tie-member
exceeds a total length of its respective slideway, the coupling,
and the guide-catheter; the distal end of each slideway is
adapted to interact with the component of the microsurgery
device joined with the corresponding tie-member and the guide-catheter
carries a clamping fixture adapted to fix the tie-members
in position.
Claim 27
Dependent Claim
23 words
A manipulation pusher as set forth in claim 26,
CHARACTERIZED in that each tie-member is made of a loop-shaped
flexible cord or string.
Claim 28
Dependent Claim
47 words
A manipulation pusher as set forth in claim 26,
CHARACTERIZED in that the tie-members appear as flexible bars
provided with hooks, or projections, or recesses at the ends
thereof which deflect at a maximum angle of 90 degrees with
respect to the axis of the manipulation pusher.
Claim 29
Dependent Claim
24 words
A manipulation pusher as set forth in claim 26,
CHARACTERIZED in that the slideways appear as small flexible
tubes inside which tie-members are accommodated.
Claim 30
Dependent Claim
51 words
A manipulation pusher as set forth in claim 26,
CHARACTERIZED in that the slideways appear as small tubes inside
which tie-members are accommodated and which are secured on the
coupling through flexible bars that deflect at a maximum angle
of 90 degrees with respect to the axis of the manipulation
pusher.
Claim 31
Dependent Claim
18 words
A manipulation pusher as set forth in claim 26,
CHARACTERIZED in that the slideways are equal in length.
Claim 32
Dependent Claim
26 words
A manipulation pusher as set forth in any one of claims
26-31, CHARACTERIZED in that the coupling is fitted at the
distal end of the guide-catheter.
Claim 33
Dependent Claim
44 words
A manipulation pusher as set forth in any one of claims
26-31, CHARACTERIZED in that the coupling is fitted at the
proximal end of the guide-catheter through an articulated joint
and the slideways are accommodated inside the guide-catheter and
extend beyond its distal end.
Claim 34
Dependent Claim
27 words
A manipulation pusher as set forth in any one of claims
26-32, CHARACTERIZED in that it further comprises a safeguarding
tube fitted on the guide-catheter coaxially therewith.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.