Artificial heart pump
The human body can be thought of as containing two separate circulations: a right or pulmonary circulation and a left or systemic circulation. These two circuits are intricately connected and interdep... Read More
Inventors: Carol, Mark P.; Carol, David J.;, Assignee: |
Total artificial heart
What is claimed is: 1. A totally implantable artificial heart comprising: (a) a central housing; (b) a linear electric motor enclosed within the central housing, comprising: (i) a stationary stator; (... Read More
Inventors: Panton, Ronald L.; Healey, William V.;, Assignee: Pyxis, Inc. (San Antonio, TX) |
Linear actuator
The above object as well as other objects not specifically enumerated are achieved by an improved structure for a linear actuator in which the rotary motion from a motor is converted to rotary motion ... Read More
Inventors: Newport, Samuel O.; Thompson, Charles H.;, Assignee: Dana Corporation (Toledo, OH) |
Method for alleviating symptoms of certain types of disorders using electromagnetic fields
The present invention is directed towards a therapeutic device, which has common, but by no means exclusive application to alleviating the symptoms of neurological, endocrinal, and auto-immune disorde... Read More
Inventors: Bashford, Grant Ernest; Wessler, Edward Paul Gerard; Whitton, Raymond Macklin;, Assignee: MS Relief Ltd. (Markham, CA) |
Leadless magnetic cardiac pacemaker
We claim: 1. A cardiac pacemaker for controlling heart rate comprising: first function generating means for generating a first electrical signal having a first wave shape and a first frequency; second... Read More
Inventors: Ramon, Ceon; Bardy, Gust H.;, Assignee: |
Phototherapy apparatus
OF THE DRAWINGS The present invention is directed to a phototherapy apparatus which can selectively provide different wavelengths of light for phototherapeutic treatment. The apparatus of the present... Read More
Inventors: McDonough, Robert M.; Hude, Richard;, Assignee: Hill-Rom Services, Inc. (Batesville, IN) |
Electric treatment system
It is an object of the present invention to provide an electric treatment system that is capable of reducing work involved in changing connections and settings by controlling the operation of a medica... Read More
Inventors: Takahashi, Hiroyuki;, Assignee: Olympus Optical Co., Ltd. (JP) |
Clamp assembly and method of use
The invention provides less-invasive devices and methods for clamping and cannulating a hollow and/or tubular body structure. More specifically, the invention provides thoracoscopic methods and device... Read More
Inventors: Donlon, Brian S.; Mueller, Jr., Richard L.; Daniel, S. Christopher; Gifford, III, Hanson S.; Stevens, John H.;, Assignee: Heartport, Inc. (Redwood City, CA) |
Delivery system and method for interstitial radiation therapy
OF THE PREFERRED EMBODIMENT In accordance with an embodiment of the invention, a substantially axially, semi-rigid and longitudinally flexible elongated member made of material, which is bio-absorbab... Read More
Inventors: Terwilliger, Richard A.; Lamoureux, Gary A.;, Assignee: IdeaMatrix, Inc. (Estes Park, CO) |
Deformable conduits and methods for shunting bodily fluid during surgery
It is an object of the present invention to provide methods and devices for temporarily shunting a fluid-carrying vessel or tubular tissue structure in a living creature to provide uninterrupted flow ... Read More
Inventors: Fogarty, Thomas J.; Ryan, Timothy J.;, Assignee: Cardiothoracic Systems, Inc. (Cupertino, CA) |
Bipolar radio-frequency surgical instrument
It is an object of the invention to provide a bipolar radio-frequency surgical instrument of the initially named kind which is suitable in particular for laparoscopic surgery, i.e. which is insertable... Read More
Inventors: Fritzsch, Gernod;, Assignee: Dekna elektro-u. medizinische Apparatebau Gesellschaft mbH (Tuttlingen, DE) |
Depth stop apparatus and method for laser-assisted transmyocardial revascularization and other surgical applications
A surgical device for performing laser-assisted transmyocardial revascularization (TMR), the device particularly adapted for delivery of laser energy via a laser delivery means or manipulation of some... Read More
Inventors: Mueller, Richard L.;, Assignee: Eclipse Surgical Technologies, Inc. (Sunnyvale, CA) |
Percutaneous endomyocardial revascularization
Accordingly, it is a primary object of the present invention to provide a new and improved catheter and associated method for myocardial revascularization of a patient. (As used herein, a patient may ... Read More
Inventors: Abela, George S.; Bowden, Russell W.;, Assignee: CorMedica (Natick, MA) |
Maneuverable electrophysiology catheter for percutaneous or intraoperative ablation of cardiac arrhythmias
The present invention addresses the problems described above by (1) delivering laser light or other ablating energy intramyocardially, and (2) diffusing the ablating energy over a broad area in the my... Read More
Inventors: Motamedi, Massoud; Ware, David L.;, Assignee: Board of Regents, The University of Texas System (Austin, TX) |
Spiral catheter with multiple guide holes
Thus, it is an advantage of the present invention to provide a catheter apparatus and method of use for percutaneous and other intra-vascular procedures, including TMR, or any stimulation procedure, w... Read More
Inventors: Horzewski, Michael; Giba, Jeffrey;, Assignee: Eclipse Surgical Technologies, Inc. (Sunnyvale, CA) |
Percutaneous transmyocardial revascularization marking system
What is claimed is: 1. A method of marking a percutaneous transmyocardial revascularization channel comprising: inserting a catheter into a chamber of a heart of a patient; applying tissue ablative en... Read More
Inventors: Linhares, Stephen J.; Negus, Charles Christopher; Rudko, Robert I.; Woodruff, Eileen A.;, Assignee: PLC Medical Systems, Inc. (Franklin, MA) |
Selective treatment of endocardial/myocardial boundary
Thus, it is an advantage of the present invention to provide an apparatus and method of use for selective myocardial revascularization, which overcomes the limitations of the prior art. It is another ... Read More
Inventors: Mueller, Richard L.;, Assignee: Eclipse Surgical Technologies, Inc. (Sunnyvale, CA) |
Surgical handpiece with self-sealing switch assembly
This invention is related generally to a new and useful electrosurgical tool. The tool of this invention has a tip assembly with an electrode that facilitates the flow of conductive fluid to constantl... Read More
Inventors: Morgan, Roy; Saravia, Heber; Voges, Jens; Prakash, Mani;, Assignee: Stryker Corporation (Kalamazoo, MI) |
Graft anchor
A graft anchor for securing a graft to bone includes an anchor member for placement in bone tissue. The anchor member defines an opening. An inner member is insertably securable into the anchor member... Read More
Inventors: Graf, Ben K.; Ferragamo, Michael C.; Blough, Rebecca A.; Brown, Jr., Charles H.;, Assignee: Smith & Nephew, Inc. (Memphis, TN) |
Selective photodynamic treatment
Phototreatment or photodynamic therapy (PDT) is used to selectively target a desired area of the body for treatment. A photosensitive agent or drug is administered, then after a certain time period a... Read More
Inventors: Peyman, Gholam A.;, Assignee: |
Reciprocating linear motor
OF THE INVENTION Refer now to the drawings and, in particular, to FIG. 1 which illustrates an axially symmetric reciprocating linear motor 10 according to this invention. The motor is formed by a sta... Read More
Inventors: Goldowsky, Michael P.;, Assignee: The United States of America as represented by the Administrator of the (Washington, DC) |
Method for making a multi-laminate stent having superelastic articulated sections
OF THE INVENTION Referring now to the drawings in detail wherein like numerals indicate the same element throughout the views, there is shown in FIGS. 1 and 2 a stent 10 made in accordance with the p... Read More
Inventors: Tomonto, Charles V.;, Assignee: Cordis Corporation (Miami Lakes, FL) |
Magnetic suspension and pointing system
This invention includes two assemblies with each having a separate function. The first assembly is attached to a carrier vehicle and consists of an azimuth gimbal and an elevation gimbal which provide... Read More
Inventors: Anderson, Willard W.; Groom, Nelson J.;, Assignee: The United States of America as represented by the Administrator of the (Washington, DC) |
Permanent magnet flux-biased magnetic actuator with flux feedback
An object of this invention is to avoid the limitations of the prior art by using permanent magnets to supply a reference bias flux to linearize the force characteristic of a magnetic actuator for a s... Read More
Inventors: Groom, Nelson J.;, Assignee: The United States of America as represented by the Administrator of the (Washington, DC) |
Magnetic bearing structure
The present invention resides in an improved electromagnetic bearing structure for supporting a rotatable member in a suspended or levitated position with respect to a stationary member. The bearing s... Read More
Inventors: Meeks, Crawford R.;, Assignee: |
Well pump actuated by natural gas
In accordance with the purposes of the present invention, as embodied and broadly described herein, the present invention is directed to a pneumatic pump for pumping liquids from natural gas wells. Fi... Read More
Inventors: Jordan, Robert A.; Nystrom, William D.;, Assignee: |
Methods for improving damaged retinal cell function
OF THE PRESENTLY PREFERRED EMBODIMENTS In the course of testing for the safety and efficacy of retinal implants in humans blinded by retinitis pigmentosa, an unexpected and surprising observation was... Read More
Inventors: Chow, Alan Y.; Chow, Vincent Y.;, Assignee: Optobionics (Naperville, IL) |
Implantable device with output circuitry for simultaneous stimulation at multiple sites
In view of the above object, there is provided an implantable battery-powered device having two or more output stages which enable stimulation at two or more stimulation sites concurrently, the two or... Read More
Inventors: Weijand, Koen J.; Leinders, Robert;, Assignee: Medtronic, Inc. (Minneapolis, MN) |
Method and apparatus for measuring blood pressure
OF THE PREFERRED EMBODIMENT Referring now to FIG. 1, there is illustrated a functional block diagram of an automatic blood pressure measuring system incorporating objects and features of the present ... Read More
Inventors: Arnold, Jeff; Judell, Neil; Zelin, Michael;, Assignee: Datascope Corporation (Paramus, NJ) |
Disposable cell culture chamber with remote access
OF THE INVENTION The invention is illustrated in connection with the same type of percutaneous access device as that disclosed in Freed U.S. Pat. No. 4,004,298 and Kantrowitz et al U.S. Pat. No. 4,63... Read More
Inventors: Frisch, Eldon E.; Kantrowitz, Adrian; Freed, Paul S.;, Assignee: L. Vad Technology, Inc. (Pontiac, MI) |
Heart Surgery 
