EP0801928B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Laser device with piercing tip for transmyocardial revascularization procedures
Assignee: Artivion Inc
•
Filing: 1997-04-02
•
Granted: 2002-07-10
•
Expires: 2017-04-02
Abstract
No abstract record available.
Inventors
- 👤 Richard L. Mueller
- 👤 Stuart D. Harman
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 11:35
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/18; A61B18/20; A61B18/22; A61B18/24; A61B17/00; A61B17/00234; A61B2017/00238; A61B2017/00243; A61B2017/00247; A61B17/22; A61B2017/22072; A61B2017/22074; A61B2017/22077; A61B2018/00053; A61B2018/00273; A61B2018/00291; A61B2018/00315; A61B2018/00345; A61B2018/00351; A61B2018/00392
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
240 words
A surgical device (16) for performing a transmyocardial
revascularization procedure on a patient's
heart, said device comprising: a handle portion (20); a tubular neck portion (22) connected to said handle
portion (20); a removable head member (24) on the distal end of
said neck portion (22) having a through bore (64); piercing means (25) retained within said head member
(24) and extending in use outwardly through said bore (64)
for making an initial opening in the epicardium membrane of
the heart; characterised in that said head member (24) has
an end face (27) in which said through bore (64) opens,
which end face is adapted to engage the outer surface of a
heart being treated; and in that the device further comprises an optical fiber means (26) having a proximal end
connectable to a source of laser energy; said fiber means (26) extending through said handle
portion (20) and into said neck portion (22) with its
distal end within said head member (24); control means (30,32) on said handle portion (20)
for engaging said fiber means (26) for moving it axially
therein and thereby moving its distal end through said bore
(64) and beyond said head member (24); whereby said initial
opening made by said piercing means (25) serves to
facilitate passage therethrough of said fiber means (26) so
that laser energy from its distal end can be used to form a
channel in the myocardium of the patient's heart.
Claim 2
Dependent Claim
26 words
The surgical device of claim 1 including means (37)
connected to said handle portion (2) for creating a suction
at an
opening at said head member.
Claim 3
Dependent Claim
47 words
The surgical device as described in claim 2 wherein
said means for creating a suction includes a tubular means (36)
extending from a vacuum source (37) and connected to said handle portion (20)
for communicating with said head membe (24) to cause the suction at
said epicardium.
Claim 4
Dependent Claim
71 words
The surgical device according to any one of the receding
claims wherein said head member (24) comprises an annular member having a
flange portion (86) with a transverse face which provides said end face (27) for engaging the epicardium of the
patient's heart, a body portion (62) with a central bore (64), and an annular
seat projection (68) in said bore (64) providing a portion of said bore of reduced
diameter.
Claim 5
Dependent Claim
62 words
The surgical device according to claim 4 wherein
said piercing means comprises: a tubular piercing member (25) retained in said body
portion (62) of said head member (24), said member (25), extending through said
opening and having a tapered tip portion (58), said piercing member
having a bore that is large enough to allow slidable movement of
said fiber means (26) therein.
Claim 6
Dependent Claim
25 words
The surgical device according to claim 5 wherein
said head member (24a) includes an axially movable safety shield (72)
extending around said piercing member (25).
Claim 7
Dependent Claim
35 words
The surgical device according to claim 4 including
a penetration force cushioning means (70) in said central bore (64) of said
head member (24) which is axially aligned and engaged with said piercing
member (25).
Claim 8
Dependent Claim
29 words
The surgical device according to claim 7 wherein
said penetration force cushioning means comprises a coil spring (70) in
said head member engaging and aligned with said piercing member.
Claim 9
Dependent Claim
25 words
The surgical device according to claim 5 wherein
said tapered tip portion extends approximately 0.20 inches (5mm) beyond
said transverse face of said head member.
Claim 10
Dependent Claim
42 words
The surgical device according to claim 4 wherein
said tubular piercing member (25) has an enlarged annular head member (60)
having a diameter greater than said reduced diameter bore portion
but less than said central bore away from said seat projection (68).
Claim 11
Dependent Claim
35 words
The surgical device according to claim 5 wherein
said head member (24) is threadedly attached to said tubular neck
portion (22) so that it can be removed to facilitate replacement of said
piercing member (25).
Claim 12
Dependent Claim
41 words
The surgical device according to any one of the preceding claims
including means (56, 57) for adjusting the rotational orientation of said
neck portion (22) and thus the position of said head member (24) relative to
said control means (30, 32).
Claim 13
Dependent Claim
42 words
The surgical device according to claim 12 wherein
said adjusting means comprises a jam nut (56) on said neck portion (22) which
is attached to said handle portion (20) and a projection (57) extending from
said jam nut to facilitate manual turning.
References Cited (Backward Citations)
No citation records indexed.
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