# US 2014/0155831 A1 · Peripheral venous catheter having protection against blood spray > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0155831 A1 - Document ID: US20140155831A1 - Status: Published application - Kind: A1 - Application number: 14/232,321 - Filed: 2012-07-16 - Published: 2014-06-05 - Earliest claimed: 2011-07-14 - Inventors: Ruben Caballero Lopez; Antonio Cornejo Bueno; Manuel Luque Gonzalez - Web page: https://patentgrep.com/patent/US20140155831A1 ## CPC - A61M 25/0693: {Flashback chambers} - A61M 39/06: Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof - A61M 2039/0633: {the seal being a passive seal made of a resilient material with or without an opening} - A61M 2039/0653: {Perforated disc} - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## Abstract A peripheral venous catheter comprising a vein indwelling section and a cannula (14), wherein the vein indwelling section includes a connection section and a tube connected to the connection section in a firmly bonded manner, and wherein the cannula is inserted into the vein indwelling section prior to inserting the venous catheter into a vein, and a wall is provided in the connection, which runs substantially perpendicular to the longitudinal extension of the connection section, including a plurality of circular ring-like wall segments, and exhibiting a central passage for the cannula at the middle of the wall, such that the wall segments form a boundary for a chamber provided in the connection section on the side facing the tube, in order to accommodate blood exiting the tube after the cannula has been removed. ## Claims ### Claim 1 A peripheral venous catheter comprising a vein indwelling section and a cannula, wherein the vein indwelling section includes a connection section and a tube connected to the connection section in a firmly bonded manner, and wherein the cannula is inserted into the vein indwelling section prior to inserting the venous catheter into a vein, the connection section is made of silicone or polyurethane, and a wall is provided in the connection section, which runs substantially perpendicular to the longitudinal extension of the connection section, including a plurality of circular ring-like wall segments, and exhibiting a central passage for the cannula at the middle of the wall, such that the wall segments form a boundary for a chamber provided in the connection section on the side facing the tube, in order to accommodate blood exiting the tube after the cannula has been removed, and the wall and the connection section are an integrated unit. ### Claim 2 (depends on 1) The peripheral venous catheter as set forth in claim 1, wherein the wall segments lie flush and tightly aligned to one another at their abutting edges. ### Claim 3 (depends on 1) The peripheral venous catheter as set forth in claim 1, wherein a connecting element is inserted into the connection section, such that the wall segments are directly pushed against by the connecting element and give way toward the inner wall of the connection section in the manner of flaps. ### Claim 4 (depends on 1) The peripheral venous catheter as set forth in claim 1, wherein the connection section exhibits recesses in its interior for accommodating the wall segments, wherein the wall segments give way into the recesses when the connecting element is inserted, such that the connection section exhibits a constant inner diameter over its entire longitudinal extension when a connecting element has been inserted. ### Claim 5 (depends on 1) The peripheral venous catheter as set forth in claim 1, wherein the wall segments are connected to the connection section via film hinges. ### Claim 6 (depends on 1) The peripheral venous catheter as set forth in claim 1, wherein the wall segments are designed such that they do not break when inserting a syringe into the opening of the connection section. ### Claim 7 (depends on 1) The peripheral venous catheter as set forth in claim 1, wherein the wall segments are disposed in the distal third of the connection section. ### Claim 8 (depends on 1) The peripheral venous catheter as set forth in claim 1, wherein the wall segments and the connection section are designed such that the venous catheter can be connected to standard syringes according to the Luer-lock system. ### Claim 9 (depends on 1) The peripheral venous catheter as set forth in claim 1, wherein the wall segments are made of the same material as the connection section. ### Claim 10 (canceled) ### Claim 11 (canceled) ### Claim 12 (depends on 1) The peripheral venous catheter as set forth in claim 1, wherein the wall is glued into the connection section. ### Claim 13 (depends on 1) The peripheral venous catheter as set forth in claim 1, wherein the wall forms an angle of 90° to the inner wall of the connection section, prior to the insertion of a connecting element. ### Claim 14 (depends on 1) The peripheral venous catheter as set forth in claim 1, wherein the wall exhibits a hardness in the range of 0-100 Shore. ### Claim 15 (depends on 1) The peripheral venous catheter as set forth in claim 1, wherein the wall exhibits a thickness in the range of 0.0001-3 mm. ### Claim 16 (depends on 1) The peripheral venous catheter as set forth in claim 1, wherein the wall is welded to the connection section. ### Claim 17 (depends on 1) The peripheral venous catheter as set forth in claim 1, wherein the wall exhibits a hardness in the range of 30-70 Shore. ### Claim 18 (depends on 1) The peripheral venous catheter as set forth in claim 1, wherein the wall exhibits a hardness in the range of 40-60 Shore. ### Claim 19 (depends on 1) The peripheral venous catheter as set forth in claim 1, wherein the wall exhibits a thickness in the range of 0.001-2 mm. ### Claim 20 (depends on 1) The peripheral venous catheter as set forth in claim 1, wherein the wall exhibits a thickness in the range of 0.01-1 mm.