Source: http://www.google.com/patents/US5843088?ie=ISO-8859-1
Timestamp: 2014-07-25 21:35:58
Document Index: 255051161

Matched Legal Cases: ['art. 11', 'art 1', 'art 2', 'art 2', 'art 1', 'art 2']

Patent US5843088 - Tool and method for installation of a ventricular cannulation device - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign in<nobr>Advanced Patent Search</nobr>PatentsA ventricular cannulation device. An inner part is placed in the cardiac chamber and an outer part is placed outside the cardiac wall. Each of the inner and outer parts is equipped with means for catching onto the cardiac wall. The inner part bears a means for guiding and attaching the outer part thereto....http://www.google.com/patents/US5843088?utm_source=gb-gplus-sharePatent US5843088 - Tool and method for installation of a ventricular cannulation deviceAdvanced Patent SearchPublication numberUS5843088 APublication typeGrantApplication numberUS 08/468,553Publication dateDec 1, 1998Filing dateJun 6, 1995Priority dateDec 23, 1991Fee statusLapsedAlso published asDE69228528D1, DE69228528T2, EP0550330A1, EP0550330B1, US5814005Publication number08468553, 468553, US 5843088 A, US 5843088A, US-A-5843088, US5843088 A, US5843088AInventorsJean-Aubert Barra, Rene PaillotOriginal AssigneeEla Medical Sa, Institute De La Sante Et De La Recherche MedicalExport CitationBiBTeX, EndNote, RefManPatent Citations (9), Referenced by (34), Classifications (16), Legal Events (5) External Links: USPTO, USPTO Assignment, EspacenetTool and method for installation of a ventricular cannulation deviceUS 5843088 AAbstract A ventricular cannulation device. An inner part is placed in the cardiac chamber and an outer part is placed outside the cardiac wall. Each of the inner and outer parts is equipped with means for catching onto the cardiac wall. The inner part bears a means for guiding and attaching the outer part thereto. A tube corresponding to the opening of the cardiac wall serves as a support for an outer tube or a vascular prosthesis. A blood circulatory assistance system is provided using a bio-pump, made from the patient's muscle, and a pulse generator to stimulate the bio-pump under program control, to pump blood from the ventricle. Vascular prosthesis are used to connect the cannulation device and the bio-pump with the aorta for blood flow therethrough.
We claim: 1. A method for installing a cannulation device in an aperture formed in cardiac tissue comprising:(a) providing an inner part having a central opening and an outer perimeter dimension, for placement in the cardiac chamber; (b) providing the inner part with a first means for catching onto the cardiac wall having a normal position for catching tissue and a deformed position in which the first catching means is confined within the perimeter dimension of the inner part; (c) providing an outer part having a central opening, for placement on the cardiac tissue opposite the inner part; (d) providing the outer part with a second means for catching the cardiac tissue; (e) placing a sleeve over the inner part so that the first catching means is in its deformed position confined within the sleeve; (f) inserting the sleeve through the cardiac tissue aperture so that the inner part passes inside the cardiac chamber; (g) removing the sleeve while maintaining the inner part inside the cardiac chamber so that the first catching means returns to its normal position; and (h) urging the inner and outer parts together so that the first catching means catches the cardiac tissue from the inside and the second catching means catches the cardiac tissue from the outside and securing the inner and outer parts together to provide the cannulation device. 2. The method of claim 1 wherein step (b) further comprising providing the first catching means as a plurality of claws having tissue penetrating tips.
10. The method of claim 1 wherein step (h) further comprises:providing a guide means secured to the inner part; mounting the outer part on the guide means for movement therealong towards the inner part; and moving the outer part along the guide means towards the inner part. 11. The method of claim 10 wherein providing a guide means further comprises providing a plurality of rods secured to the inner part and wherein mounting the outer part further comprises providing the outer part with a like plurality of apertures for sliding engagement with the guide rods.
19. An insertion tool for installing a ventricular cannulation device on opposite sides of a cardiac wall comprising:a first lever having a first contacting surface; a second lever having a second contacting surface; a pivot, wherein at least one of the first and second levers is pivotably connected to said pivot, the first and second contacting surfaces being movable in a range of motion between a first distance of separation and a second distance of separation, the second distance being greater than the first distance; and a ring supporting member having a guide ring at one end, the ring supporting member being connected to said pivot and the guide ring being interposed between said first and second contacting surfaces in said range of motion. 20. The tool of claim 15 in which the cannulation device has an inner part and an outer part, a plurality of guide rods connected to the inner part, and a bearing ring secured to the end of the plurality of guide rods, wherein the guide ring further comprises a plurality of apertures for receiving the guide rods so that the first and second contacting surfaces, when separated by said second distance, fit between the bearing ring and the ventricular cannulation device and, when moved from the second distance to the first distance, urge the inner and outer parts together.
BACKGROUND OF THE INVENTION This invention relates to a cardiac cannulation device, its use, and a circulatory assistance system using the cannulation device, a bio-pump, and a stimulation pulse generator, more particularly to a ventricular cannulation device.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a device ensuring communication through the cardiac wall between the cardiac chamber and a vascular prosthesis, with sufficient safety to fulfill the tightness condition. It is another object to provide such a device that can be quickly and easily inserted and secured. It is another object to provide a device and method of installation which does not require extracorporeal blood flow during the procedure.
BRIEF DESCRIPTION OF THE DRAWINGS Further features and advantages of the invention will be apparent from the following detailed description of several preferred embodiments of this invention taken in conjunction with the accompanying drawings, in which like reference characters refer to like parts throughout, and in which:
DETAILED DESCRIPTION OF THE INVENTION Referring to FIGS. 1 and 1b, a ventricular cannulation device in accordance with a preferred embodiment in the present invention is shown. The device comprises an inner part 1, to be placed in the ventricular chamber, and an outer part 2, to remain outside the ventricular wall. Referring to FIG. 7, a ventricular device 50 in accordance with the present invention is installed in the ventricle LV, of which the outer part 2 is outside the heart, is illustrated. Referring to FIG. 3, it is shown how the inner part 1 and the outer part 2 are on opposite sides of the ventricular wall 12.
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