Method of implanting a prosthetic device and suturing member therefor

• US 3,996,623 A
• Filed: 06/30/1975
• Issued: 12/14/1976
• Est. Priority Date: 07/30/1974
• Status: Expired due to Term

• Current Assignee: Robert L. Kaster
• Original Assignee: Robert L. Kaster
• Inventors: Kaster, Robert L.
• Primary Examiner(s): Frinks, Ronald L.
• Application Number:
  US05/591,428
• Time in Patent Office: 533 Days
• Field of Search: 3/1, 3/1.5, 128/334 R, 128/334 C, 128/335
• US Class Current: 623/2.39
• CPC Class Codes: A61F 2/2406 without fixed axis
• CPC Class Codes: A61F 2/2409 Support rings therefor, e.g. for connecting valves to tissue annuloplasty rings A61F2/2442

Abstract

An annular sewing member mounted on the base of a heart valve and attached to heart tissue with sutures. The sewing member has spaced outwardly directed flanges connected with a body forming a central annular outwardly open groove adapted to accommodate heart tissue after the natural heart valve has been removed. The flanges are relatively thin and contain an internal core of cured plastic, as Silastic. The flanges can be fabric without an internal core. A heat shrunk collar or sleeve surrounded with cord retains the suturing member in movable assembled relation with the base of the heart valve to permit angular orientation of the valving member of the valve. Stitches extend through one of the sewing member flanges and the heart tissue attaching the sewing member to the heart tissue. The knots of the stitches are located under the second flange, thereby protecting the knots and minimizing clots. The flange without knots form a smooth surface with a thin endothelium tissue layer. In another form, the stitches extend through both of the flanges to provide a stronger mechanical attachment of the sewing member to the heart tissue.

Claims

1. A method of implanting a heart valve on an annular portion of heart tissue surrounding an opening in the heart formed by the removal of a natural heart valve with a suturing member having a radial outwardly directed first annular flange and a radial outwardly directed second annular flange spaced from the first flange forming an annular groove between said flanges for accommodating the annular portion of the heart tissue comprising:

positioning the valve carrying the suturing member in the opening in the heart at about the midpoint of the annulus of the opening, locating an annular portion of the heart tissue surrounding said opening in the annular groove between said first and second annular flanges, placing stitches in one of said flanges and the annular portion of the heart tissue, and tying said stitches adjacent the inside of the other of said flanges whereby said other flange covers the knots and ends of the tied stitches.

2. The method of claim 1 including:

providing a plurality of stitches circumferentially in said one of said flanges of the suturing member and the annular portion of the heart tissue.

3. The method of claim 1 wherein:

said heart valve is provided with a movable disc and the method further includes rotation of the valve base relative to the suturing member to orient the disc after the suturing member has been stitched to the heart tissue.

4. The method of claim 1 including:

holding the other of said flanges away from the annular portion of the heart tissue during the placing of stitches in one of said flanges and annular portion of heart tissue and tying said stitches.

5. A method of implanting a prosthetic device on an annular portion of tissue surrounding an opening in a body with a suturing member having a radial outwardly directed first annular flange and a radial outwardly directed second annular flange spaced from the first flange forming an annular groove between said flanges for accommodating the annular portion of tissue comprising:

positioning the device carrying the suturing member in the opening in the body at about the midpoint of the annulus of the opening, locating an annular portion of the tissue surrounding the opening in the annular groove between said first and second annular flanges, placing stitches in one of said flanges and the annular portion of the tissue, and tying said stitches adjacent the inside of the other of said flanges whereby said other flange covers the knots and ends of the tied stitches.

6. The method of claim 5 including:

providing a plurality of stitches circumferentially in one of said flanges of the suturing member and the annular portion of the tissue.

7. The method of claim 5 including:

holding the other of said flanges away from the annular portion of the tissue during placing of the stitches in one of said flanges and the annular portion of the tissue and tying said stitches.

8. A suturing member and heart valve adapted to be connected to an annular portion of heart tissue surrounding an opening formed by the removal of a natural heart valve comprising:

a heart valve having a base with an inlet side, an outlet side, an outside wall and an inside wall surrounding a passage connecting the inlet side with the outlet side thereby allowing blood to flow through the base, said outside wall having a radial outwardly directed first annular flange adjacent the outlet side of the base and a radial outwardly directed second annular flange adjacent the inlet side of the base, an annular first groove located between said first and second flanges of the outside wall, valving means cooperating with the base to restrict the flow of blood in one direction through said passage, a suturing member surrounding and mounted on the outside wall of the base, said suturing member having a flexible plastic core, a fabric cover surrounding the core, and annular means surrounding an annular portion of the cover to hold the suturing member on the outside wall of the base, said core and cover having an annular body, a radial outwardly directed first annular flexible flange extending outwardly from the body adjacent the outlet side of the base, said first annular flexible flange having an outer surface extended generally coextensive with the transverse plane of the outlet side of the base, a radial outwardly directed second annular flexible flange spaced from the first flexible flange and extended outwardly from the body adjacent the inlet side of the base, said second annular flexible flange having an outer surface extended generally coextensive with the transverse plane of the inlet side of the base, said first and second annular flexible flanges forming with the body an annular second groove between said first and second annular flexible flanges for accommodating the annular portion of the heart tissue surrounding the opening in the heart to locate the base at about the midpoint of the annulus of the opening, said cover having a connected seam extending around the base of the second groove, said first and second annular flexible flanges each having a radial outward taper and a radial length sufficient to extend adjacent opposite sides of the annular portion of the heart tissue to accommodate sutures for connecting at least one of said flanges to the annular portion of the heart tissue, said body having a radial thickness greater than the thickness of said first and second annular flexible flanges, said annular means holding the suturing member on the outside wall of the base including an annular member holding parts of the suturing member in engagement with the first and second annular flanges of the outside wall and a part of the suturing member in the annular first groove in the outside wall of the base whereby the first flexible flange of the suturing member and the second flexible flange of the suturing member are located between the transverse planes of the outlet side and inlet side of the base.

9. The structure of claim 8 wherein:

the first annular flange and second annular flange of the suturing member have generally the same radial length and transverse thickness.

10. The structure of claim 8 wherein:

said annular member holding parts of the suturing member includes a heat shrunk collar engaging a portion of the cover to hold the suturing member on said outside wall of the base.