Patent US5713894A successfully refreshed from Google Patents.
US5713894A
Expired / Lapsed
US
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Combined mechanical/optical system for transmyocardial revascularization
Assignee: Eclipse Surgical Technologies Inc
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Filing: 1996-02-27
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Granted: 1998-02-03
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Expires: 2016-02-27
Abstract
Abstract The method for combined mechanical/laser myocardial revascularization of a human heart includes: inserting a mechanical piercing device and an elongated flexible lasing apparatus into the chest cavity of a patient; mechanically piercing, micro-tearing or spreading the epicardium of the heart; 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, and the distal end of the optical fiber apparatus 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
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:48
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: 18
Claim 1
Independent Claim
163 words
A surgical device for performing a transmyocardial revascularization (TMR) surgical procedure on a patient's heart, the device comprising: a handle portion; a tubular neck portion on the handle portion; an enlarged head portion on a distal end of the neck portion, the head portion is a radial flange member forming a distal end contact surface for stabilizing the device when engaging the heart; an optical fiber means for transmission of laser energy to a terminus of the fiber means thereby effectuating tissue ablation, the fiber means i) has a proximal end adapted for connection to a laser source and ii) is extendible through the handle, the neck portion and the enlarged head portion; and fiber optic adjustment means disposed on the handle portion for moving the optical fiber means within the handle portion and the neck portion, whereby the fiber means can move forward from the enlarged head portion as laser energy is emitted from the fiber means during the TMR surgical procedure.
Claim 2
Dependent Claim
163 words
A surgical device for performing a transmyocardial revascularization (TMR) surgical procedure on a patient's heart, the device comprising: a handle portion; a tubular neck portion on the handle portion; an enlarged head portion on a distal end of the neck portion, the head portion is a radial flange member forming a distal end contact surface for stabilizing the device when engaging the heart; an optical fiber means for transmission of laser energy to a terminus of the fiber means thereby effectuating tissue ablation, the fiber means i) has a proximal end adapted for connection to a laser source and ii) is extendible through the handle, the neck portion and the enlarged head portion; and fiber optic adjustment means disposed on the handle portion for moving the optical fiber means within the handle portion and the neck portion, whereby the fiber means can move forward from the enlarged head portion as laser energy is emitted from the fiber means during the TMR surgical procedure.
Claim 3
Dependent Claim
73 words
The surgical device as described in claim 1 wherein the handle portion has an axial lumen, a movable shuttle within the axial lumen is connected to the optical fiber means, the optical fiber means extends axially within the lumen; and a control knob fixed to the shuttle and extending outwardly from the handle portion; whereby the optical fiber means can be moved axially within the handle portion by movement of the control knob.
Claim 4
Dependent Claim
22 words
The surgical device as described in claim 1 wherein the tubular neck portion has an offset curved shape at the neck portion.
Claim 5
Dependent Claim
33 words
The surgical device as described in claim 1 wherein the tubular neck portion is made of a malleable material thereby allowing orientation changes of the enlarged head portion relative to the handle portion.
Claim 6
Dependent Claim
52 words
The surgical device as described in claim 1 wherein the handle portion has a threaded socket, the tubular neck portion having a threaded section that is attached to the threaded socket; and an adjustment nut in the threaded socket facilitates the fixed orientation of the head member relative to the handle portion.
Claim 7
Dependent Claim
24 words
The surgical device as described in claim 1 wherein the device further includes a tapered piercing means extending axially from the enlarged head portion.
Claim 8
Dependent Claim
25 words
The surgical device as described in claim 1 wherein the enlarged head portion has a circular end face having a diameter at least 0.375 inches.
Claim 9
Dependent Claim
34 words
The surgical device as described in claim 6 wherein the tapered piercing means is a tapered distal end portion of the neck portion which extends through the head member and beyond the end surface.
Claim 10
Dependent Claim
22 words
The surgical device as described in claim 8 wherein the tapered distal end portion extends approximately 0.20 inches beyond the end surface.
Claim 11
Dependent Claim
193 words
A surgical device for performing a transmyocardial revascularization (TMR) surgical procedure on a patient's heart, the device comprising: a handle portion; a tubular neck portion on the handle portion; an enlarged head portion connected to a distal end of the neck portion, the head portion is a radial flange member forming a distal end contact surface for stabilizing the device when engaging the heart; a tapered piercing means for tissue piercing which extends axially from the enlarged head portion and beyond the distal contact surface, thereby stabilizing the device during the TMR surgical procedure; an optical fiber means for transmission of laser energy to a terminus of the fiber means for ablating tissue, the fiber means i) has a proximal end adapted for connection to a laser source and ii) is extendible through the handle, the neck portion and the enlarged head portion; and fiber optic adjustment means disposed on the handle portion for moving the optical fiber means within the handle portion and the neck portion, whereby the fiber means can move forward from the enlarged head portion as laser energy is emitted from the fiber means during the TMR surgical procedure.
Claim 12
Dependent Claim
193 words
A surgical device for performing a transmyocardial revascularization (TMR) surgical procedure on a patient's heart, the device comprising: a handle portion; a tubular neck portion on the handle portion; an enlarged head portion connected to a distal end of the neck portion, the head portion is a radial flange member forming a distal end contact surface for stabilizing the device when engaging the heart; a tapered piercing means for tissue piercing which extends axially from the enlarged head portion and beyond the distal contact surface, thereby stabilizing the device during the TMR surgical procedure; an optical fiber means for transmission of laser energy to a terminus of the fiber means for ablating tissue, the fiber means i) has a proximal end adapted for connection to a laser source and ii) is extendible through the handle, the neck portion and the enlarged head portion; and fiber optic adjustment means disposed on the handle portion for moving the optical fiber means within the handle portion and the neck portion, whereby the fiber means can move forward from the enlarged head portion as laser energy is emitted from the fiber means during the TMR surgical procedure.
Claim 13
Dependent Claim
73 words
The surgical device as described in claim 10 wherein the handle portion has an axial lumen, a movable shuffle within the axial lumen is connected to the optical fiber means, the optical fiber means extends axially within the lumen; and a control knob fixed to the shuffle and extending outwardly from the handle portion; whereby the optical fiber means can be moved axially within the handle portion by movement of the control knob.
Claim 14
Dependent Claim
22 words
The surgical device as described in claim 10 wherein the tubular neck portion has an offset curved shape at the neck portion.
Claim 15
Dependent Claim
45 words
The surgical device as described in claim 10 wherein the tubular neck portion is made of a malleable material thereby allowing orientation changes of the enlarged head portion relative to the handle portion while maintaining a fixed position when used in the TMR surgical procedure.
Claim 16
Dependent Claim
53 words
The surgical device as described in claim 10 wherein the handle portion has a threaded socket, the tubular neck portion having a threaded section that is attached to the threaded socket; and an adjustment nut in the threaded socket to facilitate the fixed orientation of the head member relative to the handle portion.
Claim 17
Dependent Claim
22 words
The surgical device as described in claim 10 wherein the tapered distal end portion extends approximately 0.20 inches beyond the end surface.
Claim 18
Dependent Claim
26 words
The surgical device as described in claim 10 wherein the enlarged head portion has a circular end face having a diameter of at least 0.375 inches.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-02-02 | 2001-08-04 | 2002-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-02-02 | 2005-08-04 | 2006-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-02-02 | 2009-08-04 | 2010-02-03 | $7700.00 | Window Closed / Lapsed |