 Rotary pump |
| OF THE INVENTION FIG. 1 depicts the preferred embodiment of the pump of the instant invention. The ... |
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| Catheter having two coaxial lumens |
| The catheter of the present invention includes a generally cylindrical inner tube inserted within a ... |
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| Multilumen catheter |
| OF THE INVENTION Referring now to the drawings, one embodiment of the multilumen catheter ... |
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| Surgical drainage tube system |
| It is therefore an object of the present invention to provide an improved wound drainage system ... |
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| Method for introducing cardioplegia solution into the coronary sinus |
| In its broader aspects, the invention comprises a catheter for supplying liquid to the coronary ... |
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| Catheter system for the isolation of a segment of blood vessel |
| In accordance with one aspect of the present invention, a catheter for isolating a segment of a ... |
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| Device for treating tissues with an electromagnetic field |
| What is claimed is: 1. A method for normalising biological functions of living tissues by action of ... |
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| Flexible microscope slide |
| It is an object of the present invention to provide a microscope slide adapted for supravital ... |
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| Endoscopic instrument for forming an artificial valve |
| The first object of the present invention is to provide the apparatus and method for forming a ... |
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| Intracardiac blood pump |
| What is claimed is: 1. An intracardiac blood pump, comprising: a pump section having a distal end ... |
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Valved self-perfusing catheter guide
| Details |
Inventors: Ginsburg, Robert;
Assignee:
Primary Examiner: Yasko; John D.
Assistant Examiner: Cermak; Adam J.
Attorney, Agent or Firm: Townsend and Townsend
Valved self-perfusing guiding catheter comprises an elongate, flexible catheter body, passageways disposed along at least a portion of the catheter body for permitting perfusion through a central lumen of the catheter body, and one-way valves for preventing passage of injectable agents, such as contrast media, through the passageways. |
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DETAILED DESCRIPTION According to the present invention, apparatus and methods are provided for directionally inserting vascular catheters and other therapeutic modalities within desired vessels.
While the invention is particularly useful when employed in a patient's coronary vasculature, the invention will also find application in other vessels (e.
g, renal arteries, venae cava, thoracic duct, and the like) or luminal structures (e.
g.
, urethra, biliary tree, and the like).
The apparatus of the present invention is a guiding catheter which includes an elongated body having at least one lumen extending therethrough.
Proximate one end of the elongated body, typically (although not necessarily) the distal end, a plurality of valved passageways are provided.
Each valved passageway or perfusion means acts as a one-way valve.
During injection through the inner lumen the valves close so that the injected agent (e.
g.
, contrast media) is not lost to the surrounding vasculature.
When the catheter is not being injected (i.
e.
, passive mode), however, surrounding hydrostatic (blood) pressure opens each valve allowing blood to perfuse through the passageways.
In a method of the present invention, the guiding catheter is percutaneously introduced to the patient's vascular system, typically employing conventional J-wire technique.
The guide is then rotationally and translationally advanced to a desired location.
Upon placement, blood passes through the valved passageways of the catheter, thereby maintaining blood flow past the distal end of the catheter.
A second catheter (or other therapeutic modality) is then inserted into the guiding catheter and advanced to a desired location with the vessel of interest.
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Heart Surgery 
