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Topic: Heart-lung machine

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Mechanical Engineering Design, February 2004 -- "Blood Ties," Feature Article The nondisposable hardware portion of the heart lung machine is called the pump console and directly manages this circuit. This heart-lung machine allows the surgeon to carefully stop the heart, while the vital organs continue to receive blood and oxygen. During open-heart surgery, such as a bypass procedure, a machine takes over the function of both heart and lungs. www.memagazine.org /medes04/bloodties/bloodties.html   (2213 words)

The Mechanical Heart celebrates 50 lifesaving years Like classic automobiles, the heart-lung machine has a life of its own, says Larry Stephenson, M.D., professor of cardio-thoracic surgery at Wayne State University School of Medicine and a medical historian.  “Although new technologies continue to be developed to correct heart problems, for the foreseeable future the heart-lung machine is the mainstay for cardiac surgeons.” Their efforts, funded in part by the American Heart Association, revolutionized cardiac surgery when doctors in 1952 used the Dodrill-GMR (General Motors Research) Heart Machine to perform the first “open heart” surgery to save a man’s life. Eliz Greene, age 36, heart survivor and national ambassador for the American Heart Walk, knows the magnitude of such medical advances.  While seven-months pregnant with twins, Greene went into cardiac arrest.  She received CPR and was revived by a defibrillator.  Soon after, doctors performed a caesarean and then emergency heart surgery. www.americanheart.org /presenter.jhtml?identifier=3005888   (454 words)

SNIA S.p.A. - Analysis of Proposed Consent Order A heart-lung machine is the equipment portion of an extracorporeal bypass system, which replaces the function of the heart and lungs during surgery by circulating and providing oxygen to the patient's blood throughout the procedure. Heart-lung machines are life-sustaining medical devices that are essential for any surgery that requires the heart to be stopped, such as surgeries to implant coronary artery bypass grafts, repair or replace heart valves, repair cerebral aneurysms, or transplant livers and hearts. In the event that SNIA fails to divest the heart-lung machine assets, or the acquirer fails to obtain FDA approval and the ability to manufacture and sell heart-lung machines, the Commission may appoint a trustee to divest the COBE heart-lung machine business to a new acquirer. www.ftc.gov /os/1999/05/sniaanal.htm   (1023 words)

Gold Volume He predicted that heart-lung machines would enable the new field of cardiac surgery to develop with less risk than using either hypothermia or cross-circulation. Gibbon took the moderator’s prerogative to add some perspective to the proceedings by reviewing his considerable personal experience leading up to the first successful clinical use of a heart-lung machine for closure of an atrial septal defect. He alluded to patients of his who did not survive open-heart surgery after the one successful case, and even suggested that a heart-lung machine might not be necessary for closure of a simple atrial septal defect. echo.gmu.edu /bionics/Toppapers2.htm   (881 words)

Mass and thermal transfer means for use in heart lung machines dialyzers and other applications - Patent 5830370 The current heart-lung machine consist of 4 to 6 separate components including a pump 25, oxygenator 29, heat exchanger 27, flow meter 31, and dynamic reservoir 23; the components being connected together by plastic tubing 33 through which blood and water flow. For example, heart-lung machines, which utilize oxygenators, are employed during surgery in the USA approximately 300,000 times per year. While the large reserve volume in the open dynamic reservoir is not necessary when the machine is being used for circulatory support in the hospital ward (since there is no danger of sudden blood loss), it is essential in the operating room. www.freepatentsonline.com /5830370.html   (10338 words)

New Stuff and Old Hat On the right are shown two views of a type of heart-lung machine that was in use at GOS in the late 60s. Early in 1969 I joined a team developing heart-lung machines and was based at Great Ormond Street Hospital for Sick Children. With the exception of the tubing sets all parts of the machine were re-useable and this required an obsessive attention to cleanliness and sterility by the technical staff. fp.shawscorner.plus.com /new_stuff.htm   (1327 words)

ScienceDaily: New Heart Bypass Procedure Sidesteps Heart-Lung Machine, Reduces Related Complications Heart-lung machines provoke the release of a riot of inflammatory molecules capable of harming organs throughout the body, including the brain. In the first surgery of its kind at UC Davis Medical Center, Sellers' heart kept beating throughout the procedure, sparing him the ordeal of a heart-lung machine. Although coronary bypass surgery is over 95 percent successful, there remain serious side effects and occasional deaths -- many resulting not from the surgery itself, but from the heart-lung machine. www.sciencedaily.com /releases/2001/07/010727101114.htm   (1255 words)

Boston.com / News / Boston Globe / Health / Science / Heart patients? mental decline baffles doctors Older heart-lung machines were crude, said Dr. Irv Kron, chairman of the department of surgery at the University of Virginia. Page 2 of 2 -- Though it's not clear today that the heart-lung machine is the real culprit in "pump head," many doctors for years assumed it was and focused their prevention efforts on the machine itself. Better yet, some doctors argue, would be to get rid of the pumps and operate on still-beating hearts using special devices, including one invented by Cohn, to stabilize just one part of the heart at a time. www.boston.com /news/globe/health_science/articles/2004/09/21/heart_patients_mental_decline_baffles_doctors?pg=2   (625 words)

The Cleveland Clinic Press Room Heart-lung bypass machines typically have been used to oxygenate and pump a person’s blood during surgeries when the heart must be stopped. While conventional heart-lung bypass machines require multiple pieces of hardware and can fill a large portion of the operating room, the CORx System is comprised of a small single unit that pumps blood, oxygenates it and removes air bubbles. Cleveland Clinic doctors are the first in the nation to use a new heart-lung machine designed to cause less trauma to patients undergoing heart surgery. www.clevelandclinic.org /media/release.asp?Press_Releases_No=312   (417 words)

Oberlin Alumni Magazine Machines like Cross and Kaye's invention allowed surgeons to probe a living heart for extended periods of time by transferring the jobs of respiration and circulation from the patient's lungs and heart to a machine. A third to a half of patients who are put on the heart-lung machine may later exhibit cognitive defects, from memory problems and difficulty concentrating to depression and attention deficiency. Today the Boston heart surgeon plays the bass guitar with his band, Shake, but his celebrity status is a result of his entrepreneurial work in the operating room, not his performances on the stage. www.oberlin.edu /alummag/oamcurrent/oam_winter99/hearts.html   (1293 words)

The Whitaker Foundation: Supporting Research and Education in Biomedical Engineering His first experimental machine used two roller pumps and was designed to replace the heart and lung action of a cat. During an open-heart surgery, such as bypass surgery, the heart-lung machine takes over the functions of the heart and lungs and allows a surgeon to carefully stop the heart while the rest of the patient’s body continues to receive oxygen-rich blood. One of the greatest challenges in beating heart surgery is the difficulty of suturing or sewing on a beating heart. www.whitaker.org /glance/heartlung.html   (1178 words)

Untitled Page This heart-lung machine was never used in an operation on human beings. At the end of the Second World War the Utrecht professor of physiology, Jacob Jongbloed, experimented with the prototype of a heart-lung machine. Jongbloed was convinced that in the foreseeable future people with a heart problem could be helped by implanting an artificial heart. www.museumboerhaave.nl /collectie/e_voorwerpen/hartlongmachine.html   (100 words)

COBE Cardiovascular, Inc/Sorin Biomedica S.p.A. The proposed settlement would preserve competition in the U.S. market for heart-lung machines -- the durable equipment portion of an extracorporeal bypass system that replaces the function of the heart and lungs by circulating and supplying oxygen to a patient's blood during open heart surgery. Although Baxter does not currently manufacture or sell heart-lung machines, it is one of the world's leading healthcare businesses, and it manufactures and sells a wide array of complementary products including single-use, disposable products that along with a heart-lung machine comprise a complete extracorporeal bypass system. Such assistance would include SNIA "contract manufacturing" heart-lung machines for a limited time period to allow Baxter to establish its own manufacturing processes and to obtain its own regulatory approvals to manufacture and sell heart-lung machines. www.ftc.gov /opa/1999/05/cobe-sorin.htm   (816 words)

Heart-lung machine - Wikipedia, the free encyclopedia Heart-lung machines are frequently used in heart surgery because it is difficult or even impossible to operate on the beating heart. HLM are frequently used to assist in the induction of total body hypothermia, a state in which the body can be maintained for several hours without perfusion (blood flow). HLM are also sometimes used to keep babies with birth defects alive, or to aerate bodies with transplantable organs. en.wikipedia.org /wiki/Heart-lung_machine   (354 words)

MedlinePlus Medical Encyclopedia: Heart-and-lung transplant A heart-lung bypass machine takes over the circulating of the blood, and maintains oxygen levels to the body. Heart-and-lung transplant is surgery to replace a diseased heart and lungs with a healthy heart and lungs from a human donor. The patient's heart and lungs are removed, and the donor heart and lungs are stitched into place. www.nlm.nih.gov /medlineplus/ency/article/003004.htm   (518 words)

Healthopedia.com - Heart and Lung Transplant (Heart-Lung Transplant) After the new heart and lungs are connected, the person is taken off the heart-lung bypass machine. A heart and lung transplant is a surgical procedure in which a person's poorly functioning heart and lungs are replaced with those a person who has died and donated their organs. A heart and lung transplant is a serious operation. www.healthopedia.com /heart-and-lung-transplant   (472 words)

heart-lung machine on Encyclopedia.com The machine is used in open-heart surgery when it is necessary to effect a bypass of the circulatory system of the heart and lungs. HEART-LUNG MACHINE [heart-lung machine] device that maintains the circulation of the blood and the oxygen content of the body when connected with the arteriovenous system; it is also called the pump oxygenator. Different heart-lung machine concepts influence platelet and monocyte surface-marker expression during coronary artery surgery.(Cardiac Surgery: Interventions and Predictors: 12:30 PM-2:00 PM) www.encyclopedia.com /html/h1/heartlun.asp   (345 words)

Chillin' Heart-lung machines can be used for another purpose: After snowmobilers fall through the ice, they may arrive at a hospital with a body temperatures in the teens (Celsius). The heart-lung machine also has a cooling system -- more ice -- to cool the entire body a few degrees, also to prevent injury. That, he says, will be "more challenging than usual" because the heart has been enlarged after years of heart disease and the aorta is calcified and brittle due to the patient's kidney failure. whyfiles.org /028heart/heart6.html   (617 words)

heart lung machine Open heart surgery is possible because medical research developed the heart lung machine to bypass the heart and lungs, taking over both the pumping of the blood and its oxygenation. This was achieved by bathing the heart in a solution of precise concentration of various salts and reducing the temperature to below 28 degrees C8. Subsequent experiments by Melrose6 and David Hearse7, using the isolated hearts of rabbits and rats, established optimum concentrations of potassium chloride to stop the heart, and ways of preserving the heart while starved of blood. www.rds-online.org.uk /pages/page.asp?i_ToolbarID=3&i_PageID=124   (646 words)

Read about Cardiac pump at WorldVillage Encyclopedia. Research Cardiac pump and learn about Cardiac pump here! A cardiac pump or cardiac bypass pump or heart-lung machine temporarily takes over the function of breathing and pumping blood for a patient. Cardiac pumps are most often used in heart surgery, so that a patient's heart can be disconnected from the body for longer than the twenty minutes or so it takes a prepared patient to die. This is used primarily for treating heart attack victims. encyclopedia.worldvillage.com /s/b/Heart-lung_machines   (345 words)

02/26/1998 - Pennsylvania Current: Penn and Russian doctors explore a cool surgical procedure Heart surgeons in the West have traditionally opted for the former by using a heart-lung machine, which may cause blood clotting or inflamation. "The temperature of the patient's brain is so low that it actually allows you to stop the heart for a sufficient time -- up to an hour and 30 minutes -- to restore the heart defect, restore the circulation afterwards, and restore the full functioning of the brain," Lomivorotov said. Vladimir Lomivorotov, M.D., the institute's chief cardiothoracic anesthesiologist, explained through a translator, "The procedure is quite different from the conventional approach to providing cardiothoracic surgery" in the rest of the world. www.upenn.edu /pennnews/current/1998/022698/Doctors.html   (558 words)

Saving the Heart Can Sometimes Mean Losing the Memory Experts say there are probably several other contributing factors, including tiny blood clots or bubbles from the heart-lung machine, inadequate blood flow to the brain during surgery and brain inflammation. A new vessel is then stitched, while the heart continues to pump blood to the brain and the rest of the body. Whatever the cause, the syndrome is so pervasive that heart surgeons and cardiologists have coined a term for it: pump head. fig.cox.miami.edu /Faculty/Gaines/bil150/currentevent4.htm   (1667 words)

Bypass surgery: New pathways for blocked arteries - MayoClinic.com During the operation, a heart-lung machine continuously moves oxygen-depleted blood out of your circulation and returns oxygen-rich blood, performing the functions of the heart and lungs. Internal mammary arteries supply the chest wall and are close enough to the heart that they can remain attached to their blood source, with their downstream ends grafted onto the portions of the coronary arteries needing help. Multiple coronary arteries are diseased and the heart's main pump — the left ventricle — is functioning poorly. www.mayoclinic.com /health/coronary-bypass-surgery/HB00022   (1341 words)

Heart-Lung Machine The basic function of the machine is to oxygenate the body's venous supply of blood and then pump it back into the arterial system. Apparatus that provides mechanical circulatory support during open-heart surgery, by passing the heart to facilitate surgery on the organ. The machine also provides intracardiac suction, filtration, and temperature control. medical.webends.com /kw/Heart-Lung+Machine   (107 words)

New and Used Heart and Lung Equipment Salyer PRN Biomedical recently acquired the Century and CPE heart lung machine line and we now offer new and refurbished Century and CPE heart lung machines. We now are able to meet the needs of our clients and others who wanted a one stop source to purchase new, refurbished and used biomedical equipment and find their service and parts needs met as well. We also offer factory quality service that is world class, personal and tailored to your needs. www.salyerbiomedical.com   (200 words)

Medtronic Cardiovascular Surgery - Arrested Heart - Recent News The Heart Lung Machine is the pumping hardware commonly associated with heart bypass surgery and is used in conjunction with sophisticated oxygenation disposables of which Medtronic is a market leader. Medtronic Perfusion Systems has signed an agreement with Jostra Corp. granting Medtronic exclusive US distribution rights of Jostra Corp's Cardiopulmonary Heart Lung machines and related hardware. Physician Information > Cardiovascular Surgery > Arrested Heart Surgery www.medtronic.com /cardsurgery/arrested_heart/jostra_news.html   (187 words)

Evaluation of the Stockert-Sorin S3 heart-Lung Machine The S3 heart-lung machine is a pump of the third generation. The S3 heart-lung machine is an easy to wheel, light-weight pump with a unique desktop design. ontinual improvements of heart-lung machines have been important in the growing demands of patient safety and support during cardiopulmonary bypass. www.perfusion.com /perfusion/articles/reviews/9707-s3pump.html   (890 words)

Heart-lung machine 50th anniversary marked: 5/2 For 27 minutes during the operation, her heart and lung functions were completely maintained by the machine. To celebrate this once revolutionary and still widely used machine, a demonstration of the operation of the heart-lung machine is scheduled from noon until 2 p.m. May 6 marks the 50th anniversary of the first successful use of a heart-lung machine to support a patient during the repair of a heart defect. www.musc.edu /catalyst/archive/2003/co5-2heart.htm   (462 words)

~~~ Lanka Medicals ( Imports ) Pvt Ltd. ~~~ Both Sarns and LMIL are proud to have been associated with the installation and the maintenance of Heart - Lung machines in the Institutions. These machines are now catering to a large number of poor / middle class patients in need of eye care. LMIL is also proud to have been associated with Bausch & Lomb in winning and installing Vitrectomy machines and Phaco Machine in the Government Eye Hospital in Colombo. www.lankamedicalimp.com /lankamedicals/installation.htm   (127 words)

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