LAPAROSCOPIC TREATMENT OF PEDIATRIC VARICOCELE: A MULTICENTER STUDY OF THE ITALIAN SOCIETY OF VIDEO SURGERY IN INFANCY
摘要:
Purpose: We report preliminary results of a multicenter study of the Italian Society of Video Surgery in Infancy on the laparoscopic treatment of pediatric varicocele.Materials and Methods: A total of 161 children 6 to 16 years old (median age 12.5) underwent laparoscopic treatment of varicocele at 6 pediatric surgery divisions. Varicocele was on the left side in 159 cases (98.7%) and bilateral in 2 (1.3%), Two boys had recurrent left varicocele, All children were treated with laparoscopy, including ligation of the spermatic veins only in 28 (17.3%), and ligation of the testicular veins and artery in 133 (82.7%). In 10 boys (6.2%) an additional procedure was done simultaneously, including closure of an apparently patent peritoneal vaginal duct on the right side in 7 and resection of epiploic adhesions between the intestinal loops and abdominal wall from previous appendectomy in the remaining 3.Results: Average operative time was 30 minutes and hospitalization was about 24 hours. At followup there were 13 minor complications (8%), including left hydrocele in 9 children who underwent the Palomo technique, minor scrotal emphysema in 2 and umbilical granuloma in 2. In our series varicocele recurred in 1 boy (3.5%) who underwent ligation of the spermatic veins only and in 3 (2.2%) treated with the Palomo technique.Conclusions: Our preliminary experience shows that the results of the laparoscopic approach are comparable to those of the open approach. However, the important advantages of laparoscopy over the open approach are its minimal invasiveness and precision of intervention. Moreover, laparoscopy allows treatment of other intra-abdominal pathological conditions using the same anesthesia, as in 10 patients in our series. We believe that ligating the testicular veins and artery is preferable to ligating the testicular veins only, even if the incidence of hydrocele is not negligible after the Palomo procedure.
Processes for preparing functionahzed polymers, related functionalizing compound and preparation thereof
申请人:Bridgestone Corporation
公开号:US10730961B2
公开(公告)日:2020-08-04
Disclosed herein are processes for preparing functionalized polymers, functionalizing compounds useful in the processes and processes for preparing the functionalizing compound. The processes for preparing a functionalized polymer include reaction of a functionalizing compound (prepared from the reaction of an alkoxysilane compound of formula (I) with a polyol of formula (II)) with a reactive conjugated diene monomer-containing polymer, thereby producing a polymer end functionalized with the functionalizing compound. In certain embodiments, the functionalizing compound has a formula according to formula (III), (IV), or (V).
Compounding silica-reinforced rubber with low volatile organic compound (VOC) emission
申请人:Hergenrother L. William
公开号:US20060217473A1
公开(公告)日:2006-09-28
Alkoxy-modified silsesquioxane compounds are described. The alkoxy-modified silsesquioxane compounds contain an alkoxysilane group that participates in an alkoxysilane-silica reaction as a silica dispersing agent in rubber, with the release of zero to about 0.1% by weight of the rubber of volatile organic compounds (VOC), especially alcohol, during compounding and further processing. Further described are methods for making alkoxy-modified silsesquioxanes, methods for making vulcanizable rubber compounds containing alkoxy-modified silsesquioxanes, vulcanizable rubber compounds containing alkoxy-modified silsesquioxanes, and pneumatic tires comprising a component that contains alkoxy-modified silsesquioxanes.
NOVEL CARBAMATE ESTER COMPOUND AND ACRYLIC RUBBER COMPOSITION CONTAINING THE SAME
申请人:UNIMATEC CO., LTD.
公开号:US20220009934A1
公开(公告)日:2022-01-13
A carbamate ester compound represented by the general formula:
Z—OCONH(CH
2
)
n
NHCOO—Z [I]
wherein Z is [i], [ii], or [iii] below, and n is an integer of 2 to 10,
(wherein R
1
and R
2
are each independently a lower alkyl group having 1 to 5 carbon atoms, R
3
is a hydrogen atom or a lower alkyl group having 1 to 5 carbon atoms, and a is 1 or 2). The carbamate ester compound is used as a vulcanizing agent for carboxyl group-containing acrylic rubber and improves the delay of the vulcanization rate by scorch suppression.
Phenylurethane compounds and methods for producing same, asymmetric urea compounds and methods for producing same, barbituric acid derivative, and diazo thermal recording material containing the derivative
申请人:FUJI PHOTO FILM CO., LTD.
公开号:US20020161225A1
公开(公告)日:2002-10-31
Phenylurethane compounds of the following general formula (1); asymmetric urea compounds of the following general formula (10) obtained from the phenylurethane compounds; barbituric acid derivatives of general formula (18) produced from the asymmetric urea compounds, which have specific substituents and are useful in diazo thermal recording materials; and diazo thermal recording materials containing the barbituric acid derivative.
1
Layered product and medical supply comprising the layered product
申请人:——
公开号:US20040241478A1
公开(公告)日:2004-12-02
A laminate comprising at least a surface layer (I) and an adjacent layer (II) thereto, characterized in that the surface layer (I) comprises a cross-linked copolymer formed by cross-linking a copolymer prepared by using as monomers at least one vinyl aromatic compound and at least one conjugated diene compound, and the adjacent layer (II) comprises a hydrogenated copolymer formed by hydrogenating a copolymer prepared by using as monomers at least one vinyl aromatic compound and at least one conjugated diene compound; a multilayer tube comprising the laminate; and a medical device comprising the laminate, and/or the multilayer tube.