WO1999044516A1 - Rotating burr pmr device and method - Google Patents
Rotating burr pmr device and method Download PDFInfo
- Publication number
- WO1999044516A1 WO1999044516A1 PCT/US1999/004941 US9904941W WO9944516A1 WO 1999044516 A1 WO1999044516 A1 WO 1999044516A1 US 9904941 W US9904941 W US 9904941W WO 9944516 A1 WO9944516 A1 WO 9944516A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- catheter
- burr
- accordance
- drive shaft
- abrasive
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3205—Excision instruments
- A61B17/3207—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions
- A61B17/320758—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions with a rotating cutting instrument, e.g. motor driven
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320016—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
- A61B17/32002—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes with continuously rotating, oscillating or reciprocating cutting instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
- A61B2017/00238—Type of minimally invasive operation
- A61B2017/00243—Type of minimally invasive operation cardiac
- A61B2017/00247—Making holes in the wall of the heart, e.g. laser Myocardial revascularization
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22082—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for after introduction of a substance
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B2017/320004—Surgical cutting instruments abrasive
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B2017/320004—Surgical cutting instruments abrasive
- A61B2017/320008—Scrapers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00345—Vascular system
- A61B2018/00351—Heart
- A61B2018/00392—Transmyocardial revascularisation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/03—Automatic limiting or abutting means, e.g. for safety
- A61B2090/033—Abutting means, stops, e.g. abutting on tissue or skin
- A61B2090/036—Abutting means, stops, e.g. abutting on tissue or skin abutting on tissue or skin
Definitions
- the present invention relates generally to medical devices for forming holes in heart chamber interior walls in percutaneous myocardial revascularization (PMR) procedures. More specifically, the present invention relates to intravascular PMR devices having rotating burrs.
- PMR percutaneous myocardial revascularization
- a number of techniques are available for treating cardiovascular disease such as cardiovascular by-pass surgery, coronary angioplasty, laser angioplasty and atherectomy. These techniques are generally applied to by-pass or open lesions in coronary vessels to restore and increase blood flow to the heart muscle. In some patients, the number of lesions are so great, or the location so remote in the patient vasculature that restoring blood flow to the heart muscle is difficult.
- Percutaneous myocardial revascularization (PMR) has been developed as an alternative to these techniques which are directed at by-passing or removing lesions.
- Heart muscle may be classified as healthy, hibernating and "dead".
- Dead tissue is not dead but is scarred, not contracting, and no longer capable of contracting even if it were supplied adequately with blood.
- Hibernating tissue is not contracting muscle tissue but is capable of contracting, should it be adequately re-supplied with blood.
- PMR is performed by boring channels directly into the myocardium of the heart.
- PMR was inspired in part by observations that reptilian hearts muscle is supplied primarily by blood perfusing directly from within heart chambers to the heart muscle. This contrasts with the human heart, which is supplied by coronary vessels receiving blood from the aorta. Positive results have been demonstrated in some human patients receiving PMR treatments. These results are believed to be caused in part by blood flowing from within a heart chamber through patent channels formed by PMR to the myocardial tissue. Suitable PMR holes have been burned by laser, cut by mechanical means, and burned by radio frequency current devices. Increased blood flow to the myocardium is also believed to be caused in part by the healing response to wound formation. Specifically, the formation of new blood vessels is believed to occur in response to the newly created wound.
- the present invention pertains to a catheter assembly for performing percutaneous myocardial revascularization (PMR).
- PMR percutaneous myocardial revascularization
- the catheter of the present invention can be used to abrasively form holes in the myocardium of a patient's heart.
- the depth of the hole is controlled to a predetermined dimension.
- the control is provided by a stop disposed proximate to and proximally of the abrasive burr.
- the catheter in one embodiment, includes an elongate drive shaft having a proximal end and a distal end.
- An abrasive burr is disposed at the distal end of the drive shaft.
- a stop for limiting the depth of penetration of the burr is disposed proximate to and proximal of the abrasive burr.
- the burr can be used to form holes in the heart wall which are volumetric removals of material from the wall.
- the holes can be in the shape of channels which are deeper than they are wide. Alternately, the holes can be in the shape of craters which are wider than they are deep. The distance between the distal end of the burr and the stop will determine the depth of the hole whereas the diameter of the burr will determine the width of the hole.
- the catheter of the present invention can include an outer elongate shaft disposed around the drive shaft.
- the outer shaft and the drive shaft can define an annular lumen for infusion of contrast medium, growth factor or other drugs to the myocardium.
- the drive shaft can define an elongate infusion lumen.
- the burr preferably includes an abrasive surface disposed distally and transversely on the burr.
- the burr can include a generally conical tip.
- the abrasive burr includes a transversely extending stop disposed proximally of the tip of the burr. The stop can have a generally annular shape.
- percutaneous myocardial revascularization is performed by providing a catheter having an elongate drive shaft.
- the drive shaft has a proximal end and a distal end.
- An abrasive burr is disposed at the distal end.
- the abrasive burr has a distal tip.
- the catheter includes a stop disposed proximate to and proximally of the tip. The tip is advanced to proximate the myocardium. The burr is rotated and advanced into the myocardium.
- Figure 1 is a view of the catheter in accordance with the present invention advanced into the myocardium of the patient's heart;
- Figure 2 shows an embodiment of the catheter in accordance with the present invention wherein drugs are being infused therethrough
- Figure 3 shows an embodiment of the catheter in accordance with the present invention where drugs are being infused therethrough.
- FIG. 1 is a view of a catheter 10 in accordance with the present invention.
- Catheter 10 includes an elongate drive shaft 11 having a proximal end and a distal end.
- An abrasive burr 12 is disposed at the distal end of the drive shaft 11.
- An outer sheath 13 is preferably disposed around drive shaft 11.
- burr 12 has been advanced into a heart wall 14 of a chamber 16, for example, the left ventricle. By rotation and advancement of burr 12 into wall 14, a hole 15 has been formed.
- catheter 10 At the proximal end of catheter 10, an appropriate manifold and motor can be provided for the rotation of drive shaft 11 and to facilitate the other uses of catheter 10 described in more detail below.
- Various biocompatible materials are available to construct catheter 10.
- Tip 15, for example, may be made abrasive by applying a coating of micro fine diamond abrasive to ablate tissue such that the resultant particles are absorbed in the bloodstream to avoid forming emboli.
- Figure 2 is an embodiment of catheter 10 of Figure 1 in which drive shaft 11 and burr 12 define a longitudinally extending lumen 18.
- Lumen 18 extends from the proximal end of catheter 10 to a tip 20 of burr 12.
- contrast media, growth factors or other drugs may be infused through lumen 18.
- Tip 20, as shown, preferably has a generally conical shape.
- Stop 22 preferably does not include an abrasive coating. Stop 22 limits the penetration of burr 12 to form a hole 15 of a predetermined depth.
- Figure 3 is yet another embodiment of catheter 10 of Figure 1 in accordance with the present invention.
- an infusion lumen 19 is defined between drive shaft 11 and outer shaft 13.
- contrast media, growth factors or other drugs may be infused through lumen 19.
- catheter 10 is advanced to a chamber of the patient's heart. Usually this will be the left ventricle.
- a percutaneous route to the left ventricle can be, for example, the aorta.
- tip 12 is rotated and plunged into the myocardium of the patient's heart to form a plurality of holes 15. Contrast media may be infused through catheter 10 to monitor the progress of the PMR procedure. Growth factors or other drugs may also be infused during the procedure.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1059884T DE1059884T1 (en) | 1998-03-05 | 1999-03-05 | PMR UNIT WITH ROTATING DRILL |
EP99909887A EP1059884A1 (en) | 1998-03-05 | 1999-03-05 | Rotating burr pmr device and method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US3572998A | 1998-03-05 | 1998-03-05 | |
US09/035,729 | 1998-03-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999044516A1 true WO1999044516A1 (en) | 1999-09-10 |
Family
ID=21884456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1999/004941 WO1999044516A1 (en) | 1998-03-05 | 1999-03-05 | Rotating burr pmr device and method |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1059884A1 (en) |
DE (1) | DE1059884T1 (en) |
WO (1) | WO1999044516A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001039682A1 (en) * | 1999-12-02 | 2001-06-07 | Baxter International Inc. | Methods and apparatus for delivering medicament to tissue |
US10869689B2 (en) | 2017-05-03 | 2020-12-22 | Medtronic Vascular, Inc. | Tissue-removing catheter |
US11357534B2 (en) | 2018-11-16 | 2022-06-14 | Medtronic Vascular, Inc. | Catheter |
US11690645B2 (en) | 2017-05-03 | 2023-07-04 | Medtronic Vascular, Inc. | Tissue-removing catheter |
US11819236B2 (en) | 2019-05-17 | 2023-11-21 | Medtronic Vascular, Inc. | Tissue-removing catheter |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4526542A (en) * | 1984-02-06 | 1985-07-02 | Robert Kochis | Dental burr and method of preparing a tooth |
US5571151A (en) * | 1994-10-25 | 1996-11-05 | Gregory; Kenton W. | Method for contemporaneous application of laser energy and localized pharmacologic therapy |
WO1996035469A1 (en) * | 1995-05-10 | 1996-11-14 | Cardiogenesis Corporation | System for treating or diagnosing heart tissue |
WO1996039965A1 (en) * | 1995-06-07 | 1996-12-19 | Cardiogenesis Corporation | Surgical channel forming device with penetration limiter |
US5628761A (en) * | 1994-07-08 | 1997-05-13 | Rizik; David G. | Guide wire passage creation device |
-
1999
- 1999-03-05 WO PCT/US1999/004941 patent/WO1999044516A1/en not_active Application Discontinuation
- 1999-03-05 DE DE1059884T patent/DE1059884T1/en active Pending
- 1999-03-05 EP EP99909887A patent/EP1059884A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4526542A (en) * | 1984-02-06 | 1985-07-02 | Robert Kochis | Dental burr and method of preparing a tooth |
US5628761A (en) * | 1994-07-08 | 1997-05-13 | Rizik; David G. | Guide wire passage creation device |
US5571151A (en) * | 1994-10-25 | 1996-11-05 | Gregory; Kenton W. | Method for contemporaneous application of laser energy and localized pharmacologic therapy |
WO1996035469A1 (en) * | 1995-05-10 | 1996-11-14 | Cardiogenesis Corporation | System for treating or diagnosing heart tissue |
WO1996039965A1 (en) * | 1995-06-07 | 1996-12-19 | Cardiogenesis Corporation | Surgical channel forming device with penetration limiter |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001039682A1 (en) * | 1999-12-02 | 2001-06-07 | Baxter International Inc. | Methods and apparatus for delivering medicament to tissue |
US10869689B2 (en) | 2017-05-03 | 2020-12-22 | Medtronic Vascular, Inc. | Tissue-removing catheter |
US10925632B2 (en) | 2017-05-03 | 2021-02-23 | Medtronic Vascular, Inc. | Tissue-removing catheter |
US10987126B2 (en) | 2017-05-03 | 2021-04-27 | Medtronic Vascular, Inc. | Tissue-removing catheter with guidewire isolation liner |
US11051842B2 (en) | 2017-05-03 | 2021-07-06 | Medtronic Vascular, Inc. | Tissue-removing catheter with guidewire isolation liner |
US11690645B2 (en) | 2017-05-03 | 2023-07-04 | Medtronic Vascular, Inc. | Tissue-removing catheter |
US11871958B2 (en) | 2017-05-03 | 2024-01-16 | Medtronic Vascular, Inc. | Tissue-removing catheter with guidewire isolation liner |
US11896260B2 (en) | 2017-05-03 | 2024-02-13 | Medtronic Vascular, Inc. | Tissue-removing catheter |
US11357534B2 (en) | 2018-11-16 | 2022-06-14 | Medtronic Vascular, Inc. | Catheter |
US11819236B2 (en) | 2019-05-17 | 2023-11-21 | Medtronic Vascular, Inc. | Tissue-removing catheter |
Also Published As
Publication number | Publication date |
---|---|
EP1059884A1 (en) | 2000-12-20 |
DE1059884T1 (en) | 2001-07-05 |
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