Hydrophilic vascular prostheses - Double velour

PRODUCT CHARACTERISTICS

Hydrophilic, self-sealing with patient’s blood vascular prostheses DALLON^® H double velour are knitted from polyester yarn. 

They feature:

·        optimum elasticity

·        stable size of diameter

·        easy anastomosis with surgical sutures

·        do not fray on cut ends (includes different cut angle)

·        high mechanical strength

·        color marking line

·        hydrophilic surface that allows quick preclotting with minimum patient’s blood

Hydrophilic surface of the prosthesis shortens preclotting to a few seconds. All a surgeon has to do is to take a little of patient’s blood in a syringe and pour it over the prosthesis before heparinisation.
“Massaging” and “squeezing” of the prosthesis necessary in normal preclotting are eliminated.
Hydrophilic prostheses self-sealing with patient’s blood   are a new generation of unsealed prostheses.
When compared to prostheses sealed with resorbants such as albumin, gelatin or collagen they feature an advantage of being healed after inclusion into the circulatory system. 
As far as prostheses sealed with media other than blood are concerned absorption is accompanied by resorption – removing a foreign coating from the prosthesis.

STRAIGHT VASCULAR PROSTHESES

BIFURCATED VASCULAR PROSTHESES 011-199

PRECLOTTING OF HYDROPHILIC PROSTHESES

Hydrophilic surface of the prostheses allows preclotting with a small amount of blood within a few seconds – massaging and rubbing-in blood are unnecessary. 

Directions:

·        remove the prosthesis from the container and place it in the sterile, long, flat vessel;

·        take the patient’s blood before heparinization in the syringe in the amount labelled in Table 3;

·        gradually distribute the blood over the prosthesis until its surface is completely impregnated;

·        rotate the prosthesis several times in order to check if it is fully and regularly soaked with the patient’s blood.

Note! 

Do not stain the bottom of the vessel with blood; if there is too much blood immediately move the prosthesis to another sterile vessel;

It is not recommended to use more blood for preclotting than stated in Table 3, as the excess blood accumulates inside the prosthesis producing clots. Preclotting performed according to the directions saves patient’s blood, surgeon’s time and ensures the intraoperational tightness of the prosthesis as well as eliminates incidental local blood leaking through the “hole” in the film out of blood clotted over the surface of the prosthesis appearing during traditional preclotting.

STERILIZATION

Prostheses are sold as sterile. Coloured marker on the packaging inside the box indicates radiative sterilization performed on the material. The marker darkens.

STORAGE

Double velour vascular prostheses should be stored in airy dark rooms in conditions preventing wetting and damaging either mechanical or chemical. It is recommended to store the prostheses in rooms with relative humidity of 65% and temperature of 20°C.

Properties of DALLON^® H vascular graft:

1.             Comparison of the preclotting procedure of Dallon^® vs Dallon^® H grafts

2.             Comparison of the blood demage for Dallon^® and Dallon^® H grafts

Click on the picture above to see the video presentation of DALLON^® H graft (Real Media video)

Surgery using DALLON^® H graft  (Real Media video)

References

1.   M.H. Struszczyk, P. Bednarek,  K. Raczynski, „Synthetic vascular prostheses”, Polim. Med.,  2002, 32:1-2:13-22

2.  A. Milewski, J. Staniszewska-Kus, R. Rutowski, L. Solski, S. Pielka, „Tissue reaction following the implantation of a DALLON H vascular prosthesis in the thoracic aorta defect. Experimental tests” Polim.Med.  2002, 32:1-2:23-40

3.  D. Paluch, M. Szymonowicz, R. Rutowski, A. Milewski, S. Pielka, L. Solski, K. Raczynski, „Intraoperative studies and studies on selected parameters of coagulation and fibrinolysis following implantation of DALLON H prostheses with greater surface wettability”, Polim. Med.,  2002, 32:1-2:65-79

4.  Paluch D., Szymanowicz M., Pielka S., Majda J., „Wpływ materiałów o różnym stopniu zwilżalności na wybrane parametry krzepnięcia”, Polimery w Medycynie, 31, 1-2, 27-32,  (2001)

5.  Głowiński S., „Kierunki badań i rozwoju protez naczyniowych z tworzyw sztucznych”, Polimery w Medycynie, 18, 4, 221-235, (1988),

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