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PubMedDate not supplied

Microsurgery for tubal reconstruction following Falope-Ring sterilization in swine.

Thirteen domestic swine underwent laparotomy and sterilization using the Falope-Ring. The silastic band was applied to the isthmus in 6 swine, and to the isthmic-ampullary junction in 7 swine. Tubal reconstruction was performed using the OPMI-6 Zeiss operating microscope. Pregnancy was observed in 5 (83%) of 6 swine following isthmic-isthmic anastomosis, and in 5 (71%) of 7 swine following isthmic-ampullary anastomosis. Overall, 10 (77%) of 13 swine conceived following tubal anastomosis. An advantage to the placement of the Falope-Ring in the isthmus of the swine oviduct could not be demonstrated by chi-square analysis.

Anastomosis, Surgical↗
PubMedDate not supplied

Teaching microsurgery to gynecologists.

The gynecologist must master microsurgical techniques in the laboratory prior to engaging in clinical microsurgical work. This article describes an introductory microsurgical workshop program that is sponsored by the American Association of Gynecologic Laparoscopists in cooperation with the University of California at Irvine. The program encompasses films and lectures as well as laboratory experience that progresses from inanimate objects to small animals to fresh-frozen human fallopian tubes. The goals, preliminary arrangements, and curriculum of the workshop are explained, and guidelines are offered for optimal workshop experience. The workshop can serve as a model for hospitals or educational institutions planning to create a microsurgical laboratory and for the physician who wishes to establish a small personal laboratory area.

Gynecology↗
PubMedDate not supplied

Experiences in microsurgery in The People's Republic of China.

In 1963, the successful replantation of an upper extremity amputated at the forearm provided the impetus for great interest in this surgical procedure in the People's Republic of China. In the 16 years since that time, much progress has been made, especially after the introduction of microsurgical techniques. Prior to 1973, replantation of digits was performed 443 times under the naked eye, with a digit survival rate of 51%. Since 1973, 92 replantations have been done under the microscope, with a digit survival rate of 91%. Experience is also recorded for free abdominal skin grafts, toe transplants for thumb and finger reconstruction, free dorsalis pedis flaps, free vascularized fibular transplants, free muscle transplants, jejunal transplants for esophageal defects, combined free grafts of the omentum and skin for repair of scalp, cranial, and extremity defects, and extracranial-intracranial blood flow diversion.

China↗
PubMedDate not supplied

Absorbable and nonabsorbable sutures in microsurgery: standardized comparable studies in rats.

In order to study the applicability and value of synthetic absorbable suture materials in microvascular surgery, 8-0 monofilament nonabsorbable polyamide sutures and 8-0 absorbable polyglycolic acid and polyglactin 910 sutures were used in end-to-end anastomoses of the aorta in rats, employing the same microsurgical model for all procedures. Comparable investigations of the anastomotic sites were carded out macroscopically and histologically at various intervals postoperatively. It was found that when placed under unphysiologic strain, microvascular anastomoses sutured with absorbable materials had less mechanical endurance than anastomoses stitched with nonabsorbable suture materials. It was also found, however, that this had no significance in vivo, inasmuch as no vascular ruptures or aneurysms appeared with either the absorbable or nonabsorbable sutures even after long-term observation. The nonabsorbable sutures were fully recognizable up to 150 days, microscopically showing clear evidence of granuloma formation. The absorbable sutures, on the other hand, could hardly be discerned after 50 days, and after 150 days the foreign body and scar reactions had almost completely disappeared. Absorbable suture materials lead to more rapid restitution of the vascular wall than nonabsorbable sutures and consequently appear to be superior.

Absorbable Implants↗
PubMedDate not supplied

Microsurgery of eye vessels.

The results of 20 experiments performed on aortas and femoral arteries of rats and 150 experimental procedures performed on isolated posterior long ciliary arteries of cadaver eyes are presented. The authors draw the conclusion that it is possible in principle to perform surgical intervention on the eye vessels. The selection of microsurgical instruments, needles, and suture materials is discussed, and the ophthalmologic applications of this type of vascular surgery are contemplated.

Animals↗
PubMedDate not supplied

Microsurgery in andrologic urology. I. Refertilization.

Of 30,000 men examined for impaired fertility from 1964 to the present, 900 were diagnosed as having excretory azoospermia. Of this number, 465 underwent surgery. Epididymovasostomy was performed on 316 men. For 11 years, this surgery was done with surgical loupes, and a patency rate of 48% was achieved in those men undergoing bilateral epididymovasostomy. (Only 52% of our patients showed inflammatory obstruction.) In a small series of patients undergoing the procedure under the operating microscope, a patency rate of 75% was achieved. Vasovasostomy was performed in 20 patients with loupes and splints. Patency was obtained in 11 of the 17 that were followed. Ten of 12 patients receiving anastomosis by a technique placing nonabsorbable sutures through the entire wall of the vas became fertile. Nine of 10 patients who were operated on by a double-layer technique under the operating microscope were found to have patent ducts at follow-up. The advances in microsurgical techniques, equipment, and suture materials have considerably improved the changes for refertilization.

Epididymis↗
PubMedDate not supplied

Microsurgery in andrologic urology. II. Alloplastic spermatocele.

Experimental studies in rats and bulls demonstrated the feasibility of using a silicone-Dacron prosthesis as a sperm reservoir in cases of excretory azoospermia. In the study of bulls, 50% of the cows inseminated with spermatozoa aspirated from the alloplastic spermatocele conceived and delivered healthy calves. The clinical results of a series of 14 humans suffering from excretory azoospermia not treatable by other means (e.g., epididymovasostomy or vasovasostomy) also are presented. THe aspirations from these spermatoceles produced motile spermatozoa; however, none of the patients'p spouses conceived after insemination.

Animals↗
PubMed1980

Special eyeglasses for use in microsurgery.

Special eyeglasses, designed to be used with the operating microscope, are described. These eyeglasses, which fit inside the eyecups of the oculars of the microscope, give the wearer a better view through the microscope than do conventional glasses and at the same time enable him to shift his vision to the surgical field or the instrument table without a sacrifice in clarity. Because they permit the wearer to maintain the eyecups of the oculars in the "up" position, the eyeglasses also prevent interference from outside illumination.

Eyeglasses↗
PubMed1983

The hand table for pediatric microsurgery.

The technique using the hand table for positioning of infants for microsurgical procedures of the lower extremity is presented. With this technique, the surgeon and assistant are able to sit directly opposite each other with their arms in stable resting position.

Child↗