The invention presented here overcomes the limitations of the prior art and provides a catheter introducing system by means of which bleeding can be prevented and wall trauma can be minimized. The innovative device combines a peel-away sheath introducer set with a splittable hemostasis valve and an integrated sealing system.
The new peel-away introducer set is composed of three coaxial arranged peelable cannulae: an access cannula, a pusher and a sealing cannula. The pusher and the sealing cannula are mounted on the access cannula in a movable manner. A collagen cuff is integrated into the sealing cannula in such a way that the collagen can be positioned by the pusher at the puncture site where the collagen acts as a surgical sealant. This system allows an effective sealing of the puncture wound after removal of the access cannula. In addition, the introducer set contains a splittable hemostasis valve to prevent reflux of liquid (e.g. blood) from the punctured vessel during the implantation procedure.
The present invention could be used for procedures where a device has to be introduced into a vessel of the human or animal body. As an example the sheath introducer can be applied to establish a fully implantable and telemetrically controlled blood pressure system comprising an implant with a sensor and a telemetry unit which is connected via micro-cable with the sensor.
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Dipl.-Ing. Alfred Schillert
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