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Ultrasonic Cavitation Device
Ultrasonic cavitation device is a surgical device using low frequency ultrasound energy to dissect or fragment tissues with low fiber content. It is basically an ultrasound probe (acoustic vibrator) combined with an aspirator device (suction). It is mainly used for tissues with high water content and low fiber content, like noncirrhotic liver and pancreas. It has advantages of less blood loss, improved visibility and less collateral tissue damage. It is used in number of surgical procedures such as resection of small endocrine pancreatic tumours, partial nephrectomy, salvage splenectomy, head and neck procedures and gynecological tumours. See also *Instruments used in general surgery There are many different surgical specialties, some of which require very specific kinds of surgical instruments to perform. General surgery is a specialty focused on the abdominal contents, as well as the thyroid gland, and diseases involvin ... References {{reflist Surgical instruments ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fibrous Connective Tissue
Connective tissue is one of the four primary types of animal tissue, along with epithelial tissue, muscle tissue, and nervous tissue. It develops from the mesenchyme derived from the mesoderm the middle embryonic germ layer. Connective tissue is found in between other tissues everywhere in the body, including the nervous system. The three meninges, membranes that envelop the brain and spinal cord are composed of connective tissue. Most types of connective tissue consists of three main components: elastic and collagen fibers, ground substance, and cells. Blood, and lymph are classed as specialized fluid connective tissues that do not contain fiber. All are immersed in the body water. The cells of connective tissue include fibroblasts, adipocytes, macrophages, mast cells and leucocytes. The term "connective tissue" (in German, ''Bindegewebe'') was introduced in 1830 by Johannes Peter Müller. The tissue was already recognized as a distinct class in the 18th century. Types Fil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suction (medicine)
In medicine, devices are sometimes necessary to create suction. Suction may be used to clear the airway of blood, saliva, vomit, or other secretions so that a patient may breathe. Suctioning can prevent pulmonary aspiration, which can lead to lung infections. In pulmonary hygiene, suction is used to remove fluids from the airways, to facilitate breathing and prevent growth of microorganisms. Small suction-providing devices are often called aspirators. In surgery suction can be used to remove blood from the area being operated on to allow surgeons to view and work on the area. Suction may also be used to remove blood that has built up within the skull after an intracranial hemorrhage. Suction devices may be mechanical hand pumps or battery or electrically operated mechanisms. In many hospitals and other health facilities, suction is typically provided by suction regulators, connected to a central medical vacuum supply by way of a pipeline system. The plastic, rigid Yankaue ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endocrine Pancreatic Tumor
Neuroendocrine tumors (NETs) are neoplasms that arise from cells of the endocrine (hormonal) and nervous systems. They most commonly occur in the intestine, where they are often called carcinoid tumors, but they are also found in the pancreas, lung, and the rest of the body. Although there are many kinds of NETs, they are treated as a group of tissue because the cells of these neoplasms share common features, such as looking similar, having special secretory granules, and often producing biogenic amines and polypeptide hormones. Classification WHO The World Health Organization (WHO) classification scheme places neuroendocrine tumors into three main categories, which emphasize the tumor grade rather than the anatomical origin: * well-differentiated neuroendocrine tumours, further subdivided into tumors with benign and those with uncertain behavior * well-differentiated (low grade) neuroendocrine carcinomas with low-grade malignant behavior * poorly differentiated (high grade) ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Partial Nephrectomy
A nephrectomy is the surgical removal of a kidney, performed to treat a number of kidney diseases including kidney cancer. It is also done to remove a normal healthy kidney from a living or deceased donor, which is part of a kidney transplant procedure. History The first recorded nephrectomy was performed in 1861 by Erastus B. Wolcott in Wisconsin. The patient had had a large tumor and the operation was initially successful, but the patient died fifteen days later. The first planned nephrectomy was performed by the German surgeon Gustav Simon on August 2, 1869, in Heidelberg. Simon practiced the operation beforehand in animal experiments. He proved that one healthy kidney can be sufficient for urine excretion in humans. Indications There are various indications for this procedure, including renal cell carcinoma, a non-functioning kidney (which may cause high blood pressure) and a congenitally small kidney (in which the kidney is swelling, causing it to press on nerves, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Splenectomy
A splenectomy is the surgical procedure that partially or completely removes the spleen. The spleen is an important organ in regard to immunological function due to its ability to efficiently destroy encapsulated bacteria. Therefore, removal of the spleen runs the risk of overwhelming post-splenectomy infection, a medical emergency and rapidly fatal disease caused by the inability of the body's immune system to properly fight infection following splenectomy or asplenia. Common indications for splenectomy include trauma, tumors, splenomegaly or for hematological disease such as sickle cell anemia or thalassemia. Indications The spleen is an organ located in the abdomen next to the stomach. It is composed of red pulp which filters the blood, removing foreign material, damaged and worn out red blood cells. It also functions as a storage site for iron, red blood cells and platelets. The rest (~25%) of the spleen is known as the white pulp and functions like a large lymph node bein ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Head And Neck Pathology
A head is the part of an organism which usually includes the ears, brain, forehead, cheeks, chin, eyes, nose, and mouth, each of which aid in various sensory functions such as sight, hearing, smell, and taste. Some very simple animals may not have a head, but many bilaterally symmetric forms do, regardless of size. Heads develop in animals by an evolutionary trend known as cephalization. In bilaterally symmetrical animals, nervous tissue concentrate at the anterior region, forming structures responsible for information processing. Through biological evolution, sense organs and feeding structures also concentrate into the anterior region; these collectively form the head. Human head The human head is an anatomical unit that consists of the skull, hyoid bone and cervical vertebrae. The term "skull" collectively denotes the mandible (lower jaw bone) and the cranium (upper portion of the skull that houses the brain). Sculptures of human heads are generally based on a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Instruments Used In General Surgery
There are many different surgical specialties, some of which require very specific kinds of surgical instruments to perform. General surgery is a specialty focused on the abdominal contents, as well as the thyroid gland, and diseases involving skin, breasts, various soft tissues, trauma, peripheral vascular disease, hernias, and endoscopic procedures. This page is dedicated specifically to listing surgical instruments used in general surgery. Instruments can be classified in many ways - but broadly speaking, there are five kinds of instruments. # Cutting and dissecting instruments: #*Scalpels, scissors, and saws are the most traditional #*Elevators can be both cutting and lifting/retracting #*Although the term dissection is broad, energy devices such as diathermy/cautery are often used as more modern alternatives. # Grasping or holding instruments: #*Classically this included forceps and clamps predominantly #*Roughly, forceps can be divided into traumatic (tissue crushin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
