SU207339A1 - HEART VALVE PROTESTS - Google Patents

Description

Known holders of prosthetic heart valves, containing a collet chuck and a rod-handle, holding the prosthesis at the time of his stitching to the fibrous ring.

The proposed holder facilitates and accelerates the manual insertion of the prosthesis due to the preliminary stitching of the valve cuff with threads and securing the threads and needles to the holder.

This is achieved by the fact that the axial rod is provided with a washer and a sleeve of elastic material for injection of needles, and on the clamp there is a distribution disc with radial slots for the threads. To adjust the tension and the length of the threads, the clamp and clutch are fastened to the rod with collet clamps.

The drawing shows a holder with a stitched valve cuff (the valve cuff is stitched with only two suture threads).

The prosthetic heart valve holder contains an axial rod 1 with a longitudinal groove 2 and a handle 3, a collet chuck 4. for clamping the prosthetic valve 5, a distribution disc 6, a sleeve 7 and a washer 8 of elastic material, for example rubber, with a collet fixation on the rod 1.

together with the cartridge, and the other, by turning the handle 3, clamp the valve prosthesis.

One needle 10 of the suture thread 11 is injected into the rubber washer 8, another needle 12 of the suture thread is guided through the cuff 13 of the valve 5 and injected into the rubber sleeve 7.

Each thread is placed in a certain groove 14 on the distribution disk. For easy distribution of valve threads

the circumference of the distribution disc is conventionally divided into three segments (by the number of arms on the valve).

Total stitch in this way from 20 to 30 threads, depending on the size of the prosthesis

valve.

Then, by displacing the distributor disc with the faceplate 8 along the rod / tensioning, the suture threads and enclose the distributor disc with the tensioned springs

ring (in the drawing spring ring not shown).

In this form, the holder with the stitched prosthetic heart valve is sterilized by boiling.

Hem proteas. valve with the proposed holder, needle 12, taken from rubber sleeve 7, into fibrous ring tissue 15. Needle 12, passed through fibrous ring, is then punctured into roller 16

Many clamps are required. For each segment of the prosthetic valve take one such roller.

After flashing the annulus, the sutures are tightened by stirring, distributing a disk with a rubber washer 8 along rod 1 and then successively clamping the thread segments, valve 5 is fixed and the holder is removed.

The holder has two types of cartridges for prosthetic mitral and aortic valves.

Subject invention

Claims (2)

1. A prosthetic heart valve holder containing an axial rod with a collet chuck holding a stitched valve, characterized in that, in order to facilitate and accelerate the manual stitching of the prosthesis by pre-stitching the valve cuff with threads and securing the ends of the threads and needles to the holder, the axial rod is provided washer and sleeve of elastic material for vcol needles, and the washer has a distribution disc with radial slots for threads. 2. A holder according to Claim 1, characterized in that, in order to adjust the tension and the length of the threads, the washer with a distribution disc and the sleeve have collet clamps.