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EP0792624A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Surgical apparatus for transmyocardial revascularization

Assignee: Artivion Inc
•
Filing: 1997-02-27
•
Granted: —
•
Expires: 2017-02-27
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Abstract

Abstract A surgical apparatus (16) is provided for combined mechanical/laser myocardial revascularization of a human heart (10). Use of the apparatus involves inserting a mechanical piercing device (24) and an elongated flexible lasing apparatus into the chest cavity of a patient; mechanically piercing, micro-tearing or spreading the epicardium of the heart (12); and then lasing from beneath the epicardium through the myocardium. The apparatus is guided to an area exterior to a ventricle of the patient's heart (14), and the distal end of the optical fiber apparatus (26) is placed internal to the exterior wall of the heart through an opening which has been created by mechanically piercing, micro-tearing or spreading the epicardium, so that the myocardium and not the epicardium is irradiated with laser energy to allow passage of said optical fiber distal end or said laser energy into the left ventricular cavity without causing a laser irradiation of the epicardium which might be a cause of operative bleeding and for better allowing the sealing of the epicardium after the apparatus is removed.

Inventors

  • 👤 Douglas Murphy-Chutorian
  • 👤 Stuart D. Harman

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 05:30
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/18; A61B18/20; A61B18/22; A61B18/24; A61B18/245; A61B17/00; A61B17/00234; A61B2017/00238; A61B2017/00243; A61B2017/00247; A61B2018/00315; A61B2018/00345; A61B2018/00351; A61B2018/00392

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 120 words
A surgical apparatus for performing a trans-myocardial revascularization procedure, said apparatus comprising - a handle portion; - a tubular neck portion connected to the handle portion; - an enlarged head portion on the distal end of said neck portion; - a tapered piercing means extending axially from said head portion; - an optical fiber means having a proximal end connected to a laser source extending through said handle and said neck portion and terminating at said head portion; and - means on said handle portion for moving said optical fiber means axially within said handle portion and said neck portion and thus outwardly from said piercing means as laser energy is emitted from said fiber means during a surgical procedure.
Claim 2
Dependent Claim 66 words
A surgical apparatus according to claim 1 wherein said handle portion has an axial lumen, a movable shuttle within said lumen having an axial bore through which said optical fiber means extends; and a control knob fixed to said shuttle and extending outwardly from said handle portion; whereby said optical fiber means can be moved axially within said handle portion by movement of said control knob.
Claim 3
Dependent Claim 19 words
A surgical apparatus according to claim 1 or claim 2 wherein said tubular neck portion has a curved configuration.
Claim 4
Dependent Claim 38 words
A surgical apparatus according to any one of the preceding claims wherein said tubular neck portion is made of a flexible material to enable said head portion to be oriented to different positions relative to said handle portion.
Claim 5
Dependent Claim 52 words
A surgical apparatus according to any one of the preceding claims wherein said handle portion has a threaded socket, said tubular neck portion being threadedly attached to said threaded socket; and an adjustment nut in said threaded socket to facilitate the fixed orientation of said head member relative to said handle portion.
Claim 6
Dependent Claim 52 words
A surgical apparatus according to any one of the preceding claims wherein said head member attached to the distal end of said neck portion has a radial flange portion forming a transverse end surface adapted to contact the outer surface of the patient's heart, said piercing means extending beyond said end surface.
Claim 7
Dependent Claim 36 words
A surgical apparatus according to any one of the preceding claims wherein said piercing means comprises a tapered distal end portion of said neck portion which extends through said head member and beyond said end surface.
Claim 8
Dependent Claim 21 words
A surgical apparatus according to claim 7 wherein said tapered distal end portion extends approximately 0.20 inches beyond said end surface.
Claim 9
Dependent Claim 28 words
A surgical apparatus according to any one of the preceding claims wherein said enlarged head portion has a circular end face having a diameter of about 0.375 inches.
Claim 10
Dependent Claim 40 words
A surgical apparatus according to any one of the preceding claims wherein said laser source is a pulsed holmium laser operating at a wave length of 1.8 to 2.2 microns and a pulse rate in the range of 2-25 pps.

References Cited (Backward Citations)

US4658817A Cited
DE3911796A1 Cited
US5380316A Cited
EP0515867A2 Cited
WO1994014383A1 Cited

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