US2004215142A1PendingUtilityA1

Appliance for cannulation of a blood vessel

30
Priority: Dec 23, 2002Filed: Dec 19, 2003Published: Oct 28, 2004
Est. expiryDec 23, 2022(expired)· nominal 20-yr term from priority
Inventors:Georg MatheisHeiko FrerichsAxel SandmannDietmar Klietsch
A61M 1/3666A61M 2025/1095A61M 1/3659A61M 1/3653
30
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

The present invention relates to an appliance for cannulation of a blood vessel with a cannula which, after introduction into the vessel, is in fluidic communication with the vessel. At least one means is also provided to permit a controlled division of the blood into a first subsidiary stream which leaves the vessel through the cannula, and a second subsidiary stream which continues to flow through the vessel.

Claims

exact text as granted — not AI-modified
Therefore, what is claimed, is:  
     
         1 . An appliance for cannulation of a blood vessel with a cannula which, after introduction into the vessel, is in fluidic communication with the vessel, wherein at least one means is provided to permit a controlled division of the blood into a first subsidiary stream which leaves the vessel through the cannula, and a second subsidiary stream which is continued through the vessel.  
     
     
         2 . The appliance of  claim 1 , wherein the subsidiary stream remaining in the vessel can be guided via the means past the cannula.  
     
     
         3 . The appliance of  claim 2 , wherein the means is a balloon which surrounds the cannula and which has a surface with at least one groove-like depression.  
     
     
         4 . The appliance of  claim 3 , wherein the surface with the at least one groove-like depression faces towards the vessel and/or the cannula.  
     
     
         5 . The appliance of  claim 2 , wherein the means is at least one balloon which surrounds the cannula in sections in such a way that at least two ends of the balloon pointing in the circumferential direction are located at a circumferential distance from one another.  
     
     
         6 . The appliance of  claim 5 , wherein two balloons are provided which surround the cannula in sections.  
     
     
         7 . The appliance of  claim 3 , wherein the balloon is dilatable.  
     
     
         8 . The appliance of  claim 4 , wherein the balloon is dilatable.  
     
     
         9 . The appliance of  claim 3 , wherein the balloon is not dilatable.  
     
     
         10 . The appliance of  claim 4 , wherein the balloon is not dilatable.  
     
     
         11 . The appliance of  claim 1 , wherein the subsidiary stream remaining in the vessel can be guided first into the cannula and then out of it via the at least one means.  
     
     
         12 . The appliance of  claim 11 , wherein the means is an outlet in the cannula.  
     
     
         13 . The appliance of  claim 12 , wherein the outlet is an opening in the cannula.  
     
     
         14 . The appliance of  claim 12 , wherein the outlet is a tubular portion on the cannula, which tubular portion is guided in the vessel.  
     
     
         15 . The appliance of  claim 12 , wherein the outlet is a cannula-like portion on the appliance which portion is guided at least partially outside the vessel.  
     
     
         16 . The appliance of  claim 12 , wherein a balloon is additionally provided which is arranged on the cannula between the point of entry of the blood into the cannula and the outlet.  
     
     
         17 . The appliance of  claim 1 , wherein means are additionally provided for measuring at least one of the subsidiary streams.  
     
     
         18 . The appliance of  claim 2 , wherein means are additionally provided for measuring at least one of the subsidiary streams.  
     
     
         19 . The appliance of  claim 10 , wherein means are additionally provided for measuring at least one of the subsidiary streams.  
     
     
         20 . The appliance of  claim 1 , wherein means are additionally provided for Regulating the subsidiary streams.  
     
     
         21 . The appliance of  claim 2 , wherein means are additionally provided for regulating the subsidiary streams.  
     
     
         22 . The appliance of  claim 10 , wherein means are additionally provided for regulating the subsidiary streams.  
     
     
         23 . The appliance of  claim 17 , wherein means are additionally provided for regulating the subsidiary streams.  
     
     
         24 . The appliance of  claim 1 , wherein the cannula has an external diameter of ca. 5 to 30 French, in particular of 13 to 21 French.  
     
     
         25 . The appliance of  claim 1 , wherein it is coated with a biocompatible material.  
     
     
         26 . An appliance for cannulation of a blood vessel with a cannula which, after introduction into the vessel, is in fluidic communication with the vessel, wherein at least one means is provided to permit a controlled division of the blood into a first subsidiary stream which leaves the vessel through the cannula, and a second subsidiary stream which is continued through the vessel, wherein the subsidiary stream remaining in the vessel can be guided via the means past the cannula.  
     
     
         27 . An appliance for cannulation of a blood vessel with a cannula which, after introduction into the vessel, is in fluidic communication with the vessel, wherein at least one means is provided to permit a controlled division of the blood into a first subsidiary stream which leaves the vessel through the cannula, and a second subsidiary stream which is continued through the vessel, wherein the subsidiary stream remaining in the vessel can be guided via the means past the cannula, wherein the means is a balloon which surrounds the cannula and which has a surface with at least one groove-like depression.  
     
     
         28 . An appliance for cannulation of a blood vessel with a cannula which, after introduction into the vessel, is in fluidic communication with the vessel, wherein at least one means is provided to permit a controlled division of the blood into a first subsidiary stream which leaves the vessel through the cannula, and a second subsidiary stream which is continued through the vessel, wherein the subsidiary stream remaining in the vessel can be guided first into the cannula and then out of it via the at least one means.  
     
     
         29 . An appliance for cannulation of a blood vessel with a cannula which, after introduction into the vessel, is in fluidic communication with the vessel, wherein at least one means is provided to permit a controlled division of the blood into a first subsidiary stream which leaves the vessel through the cannula, and a second subsidiary stream which is continued through the vessel, wherein the subsidiary stream remaining in the vessel can be guided first into the cannula and then out of it via the at least one means, wherein the means is an outlet in the cannula.  
     
     
         30 . An appliance for cannulation of a blood vessel with a cannula which, after introduction into the vessel, is in fluidic communication with the vessel, wherein at least one means is provided to permit a controlled division of the blood into a first subsidiary stream which leaves the vessel through the cannula, and a second subsidiary stream which is continued through the vessel, wherein the subsidiary stream remaining in the vessel can be guided first into the cannula and then out of it via the at least one means, wherein the means is an outlet in the cannula, wherein the outlet is a tubular portion on the cannula, which tubular portion is guided in the vessel.  
     
     
         31 . A method for extracorporeal lung assist, comprising the steps of 
 canulating a blood vessel, preferably the femoral artery, with a cannula,    dividing in a controlled manner the blood flowing within said vessel into a first subsidiary stream which leaves the vessel through the cannula, and a second subsidiary stream which is continued through the vessel,    guiding said first subsidiary blood stream through a lung assist device and then back into an ether blood vessel, preferably into the femoral vein.    
     
     
         32 . The method of  claim 31 , wherein said cannula is part of the applicance of  claim 1 .  
     
     
         33 . The method of  claim 31 , wherein said cannula is part of the applicance of  claim 26 .  
     
     
         34 . The method of  claim 31 , wherein said cannula is part of the applicance of  claim 28.

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