The multimodal water jet dissector--a technology for laparoscopic liver surgery.

Unlabelled: In order to avoid laparotomy in patients with superficially and/or anatomically favourably located liver lesions, the feasibility of laparoscopic liver resection using an aqua jet was evaluated in 6 pigs. For this purpose a commercially available water jet dissector was adapted for laparoscopic use and modified to a multifunctional device providing aqua jet, suction and cautery. To improve laparoscopic vision during jet activity a hydrolaparoscope was used.

[Ultra-pressurized hydrodynamics in surgery].

Like the CO2-laser, a H2O-jet stream may produce a selective cutting effect by working at distance. Because of the innovative possibility to add any kind of pharmacological agents to the ejected operating liquid, the new surgical equipment: Aquatom NTS-1000 allows a deep penetration of efficient medicaments directly into pathological areas, such as met in septic cutaneous diseases.

Intravenous spiral support for the prevention of outflow-tract stenosis in av-shunts for hemodialysis?

Intraluminal spiral support of bovine heterografts (Solcograft-P) offers promising mechanical characteristics for av-shunts. Using a tunneling technique the spiral prevents twisting and kinking during subcutaneous placement and allows prolonged and vigorous post-puncture compression for hemostasis without compromising shunt flow. Canine experiments (femoro-femoral loop) suggest that additional insertion of the spiral into the efferent vein for some centimeters can prevent or delay the development of outflow-tract stenosis, the main cause of late shunt failure (0% (0/5) vs.

[Ambulatory therapy of hemorrhoids using cryosurgery].

The treatment of hemorrhoids by cryosurgery is fairly new. Cryogenic hemorrhoidectomy, a painless technique, can be performed on an ambulatory basis without anesthesia or hospitalisation. Using a nitrous oxide cryoprobe operating at -90 degrees C 65 cases (34 women and 31 men) are subjected to the minor treatment of hemorrhoids by cryotherapy.

[Autoimplantation of splenic tissue into the peritoneal cavity of irradiated rats].

A simple technique is described for the autoimplantation of splenic tissue in the peritoneal cavity of rats. The effect of splenic implants on irradiated splenectomised rats was investigated, by following the evolution of the implants both microscopically and macroscopically. The effect on haemopoiesis was also observed.

[Prevention of diabetes in pancreatectomised dogs by autotransplantation of pancreatic tissue in the liver].

In 15 mongrel dogs, a mixture of exocrine and endocrine pancreatic tissue obtained by a simple procedure was implanted into the liver of the same animal through a branch of the portal vein. Five animals with partial pancreatectomy were used for a morphological study. In a second group of ten dogs, 5 delayed and 5 immediate pancreatectomies were performed.