# US 8,771,165 B2 · Ventricular assist device cannula and ventricular assist device including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,771,165 B2 - Document ID: US8771165B2 - Status: Granted - Kind: B2 - Application number: 14/058,358 - Filed: 2013-10-21 - Published: 2014-02-13 - Granted: 2014-07-08 - Earliest claimed: 2010-11-12 - Assignees: Libraheart, Inc.V - Applicants: LibraHeart, Inc.V - Inventors: Sung Wook Choi; Byoung Goo Min - Web page: https://patentgrep.com/patent/US8771165B2 ## CPC - A61M 60/148: in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices - A61M 60/178: drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices - A61M 60/268: the displacement member being flexible, e.g. membranes, diaphragms or bladders - A61M 60/427: the force acting on the blood contacting member being hydraulic or pneumatic - A61M 60/515: Regulation using real-time patient data - A61M 60/531: using blood pressure data, e.g. from blood pressure sensors - A61M 60/538: Regulation using real-time blood pump operational parameter data, e.g. motor current - A61M 60/585: User interfaces - A61M 60/859: Connections therefor - A61M 60/878: Electrical connections within the patient's body - A61M 60/88: Percutaneous cables - A61N 1/0563: {specially adapted for defibrillation or cardioversion} - A61N 1/0573: {chacterised by means penetrating the heart tissue, e.g. helix needle or hook} - A61N 1/3625: {External stimulators} - A61N 1/372: Arrangements in connection with the implantation of stimulators - A61N 1/3987: {characterised by the timing or triggering of the shock} - A61M 2230/04: Heartbeat characteristics, e.g. ECG, blood pressure modulation - A61N 1/36521: {the parameter being derived from measurement of an electrical impedance} - 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)} - A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B) ## Abstract Provided is a ventricular assist device cannula, and more particularly, a ventricular assist device cannula with electrodes. An exemplary embodiment of the present invention provides a ventricular assist device cannula with electrodes, including: a connecting tube connecting an incision of a body tissue and a ventricular assist device so that blood can flow; and electrodes connected with the connecting tube and contacting the incision of the body tissue to transfer an electric signal to the body tissue. The ventricular assist device cannula with electrodes according to the exemplary embodiment of the present invention has effects as follows. First, a bio-signal of a patient wearing the ventricular assist device through the electrode attached to the conduit can be easily measured without a separate electrode implant and an electric stimulus can also be measured. Second, since the electric stimulus can be directly applied to a cardiac muscle, it is possible to improve stability and efficiency of an electric treatment such as a cardiac pacemaking, a ventricular defibrillation, and the like of the patient wearing the ventricular assist device. ## Claims ### Claim 1 A ventricular assist device cannula with electrodes, comprising: a connecting tube adapted to connect an incision of a body tissue and a ventricular assist device to allow blood flow through the connecting tube; and electrodes connected with the connecting tube and adapted to contact the incision of the body tissue and to transfer an electric signal to the body tissue, wherein: each of the electrodes is a conductive sheet wrapped around a surface of the connecting tube. ### Claim 2 A ventricular assist device cannula with electrodes, comprising: a connecting tube adapted to connect an incision of a body tissue and a ventricular assist device to allow blood flow through the connecting tube; and electrodes connected with the connecting tube and adapted to contact the incision of the body tissue and to transfer an electric signal to the body tissue, wherein: each of the electrodes is a hollow electrode which has a hollow space into which the connecting tube is inserted at the inside thereof and is adapted to closely contact the incision of the body tissue. ### Claim 3 (depends on 2) The ventricular assist device cannula with electrodes of claim 2, wherein: a receiving groove adapted to receive the incision of the body tissue is formed at an outer circumference of the hollow electrode. ### Claim 4 A ventricular assist device cannula with electrodes, comprising: a connecting tube adapted to connect an incision of a body tissue and a ventricular assist device to allow blood flow through the connecting tube; and electrodes connected with the connecting tube and adapted to contact the incision of the body tissue and to transfer an electric signal to the body tissue, wherein: each of the electrodes is a connector electrode which has a hollow space where the blood can flow at the inside thereof: and the electrode includes a body part adapted to contact to the incision of the body tissue and to be inserted into the body tissue, and a fixing part extending from the body part and inserted and fixed to the connecting tube. ### Claim 5 (depends on 4) The ventricular assist device cannula with electrodes of claim 4, wherein: a receiving groove adapted to receive the incision of the body tissue is formed at an outer circumference of the body part. ### Claim 6 A ventricular assist device cannula with electrodes, comprising: a connecting tube adapted to connect an incision of a body tissue and a ventricular assist device to allow blood flow through the connecting tube; and electrodes connected with the connecting tube and adapted to contact the incision of the body tissue and to transfer an electric signal to the body tissue, wherein: each of the electrodes has a hollow space where the blood can flow at the inside thereof; and the electrode includes a body part adapted to contact to the incision of the body tissue, and fixing parts extending from the body part to the upstream and the downstream, respectively, and the connecting tube includes: a first connecting tube having one end connected to one of the fixing parts and the other end inserted into the body tissue; and a second connecting tube having one end connected to the other one of the fixing parts and the other end connected to the ventricular assist device. ### Claim 7 (depends on 6) The ventricular assist device cannula with electrodes of claim 6, wherein: a receiving groove adapted to receive the incision of the body tissue is formed at an outer circumference of the body part.