摘要:
An instrument for the surgical closure of a trocar puncture through a posterior fascia introduced during a laparoscopic operation comprises a tube (1) with a forward insertion end (2) and a rearward end (3), in whose shell wall (5) opposing window openings (7) are formed, in which terminates at its margins remote from the insertion end (2) of the tube (1) at least one bore (8) extending in the shell wall (5) in the longitudinal direction of the tube (1), hollow needles (10), each disposed in one of the bores (8) and displaceable between a retracted position, in which they clear the particular window opening (7), and an end position, in which they cross the window opening (7), and each having an inner channel (17), wherein each of the inner channels (17) of the hollow needles (10) forms a section of a guide channel for guiding through a suture thread (36), and this guide channel further includes at least one curved connecting section (18), which connects the front ends of the inner channels (17) of two hollow needles (10) when they are in their end positions and crossing opposing window openings (7), which, over its entire longitudinal length, is covered with respect to the outer space encompassing the tube (1) by an openable closure device (23) or is connected via a slot with the outer space encompassing the tube (1), wherein a segment of the suture thread (36) located in the connecting section (18) can be brought out of the connecting section (18) of the guide channel into the outer space through the slot or after opening the closure device (23).
摘要:
Embodiments of the invention relate to a wound covering having a first strip-like element forming a first periphery and a second strip-like element that faces away from the first periphery, runs approximately parallel thereto, forming a second periphery, and is joined to the first strip-like element, there being formed between the first inner periphery of the strip-like element, facing away from the first periphery, and a second inner periphery of the second strip-like element, facing away from the second periphery, a drainage chamber, the depth of which in a depth direction extending at right angles to the periphery ensures a capillary action on bodily fluids received in the drainage chamber, in particular exudates.
摘要:
This invention relates to a reactor unit with a first chamber and a second chamber, wherein the first chamber is formed by the interior of a housing and wherein the second chamber is formed by the interior of a plurality of hollow fibers arranged in the housing. The hollow fibers are arranged in the housing such that their density in at least one region of the first chamber does not exceed 10 fibers/mm2, based on the cross-sectional area of the first chamber. In accordance with another aspect of the invention it is provided that in the reactor unit two casting compounds are arranged, in which a portion of the hollow fibers is embedded and between which another portion of the hollow fibers extends, wherein the length of at least some or all hollow fibers is at least 0.5% greater than the distance of the casting compounds.
摘要翻译:本发明涉及具有第一室和第二室的反应器单元,其中第一室由壳体的内部形成,并且其中第二室由布置在壳体中的多个中空纤维的内部形成。 中空纤维布置在壳体中,使得它们在第一腔室的至少一个区域中的密度基于第一腔室的横截面面积不超过10根纤维/ mm 2。 根据本发明的另一方面,提供了在反应器单元中,布置两个铸造化合物,其中中空纤维的一部分被嵌入,并且在另一部分中空纤维之间延伸,其中至少一些中空纤维的长度 或所有中空纤维比铸造化合物的距离大至少0.5%。
摘要:
The invention relates to a method for producing ethylenically unsaturated aliphatic halogenic hydrocarbons by the thermal cleavage of saturated aliphatic halogenic hydrocarbons. According to said method, an educt gas stream is introduced into a reactor, which comprises at least one supply conduit that opens into said reactor. The supply conduit feeds a heated gas formed from cleavage promoters and radicals into the reactor. The method permits an increase in the yield of the cleavage reaction.
摘要:
Process and apparatus for preparing 1,2-Dichloroethane by direct chlorination If in the reaction of ethylene with chlorine to form 1,2-dichloroethane (EDC) the catalyst components sodium chloride and iron(III) chloride are used in a molar ratio of below 0.5, then the EDC is obtained in sufficiently high purity to allow direct conversion to vinyl chloride. With maintenance of the stated molar ratio the reaction can be carried out very advantageously in terms of equipment and energy consumption, for example by vaporizing some of the EDC in an expansion vessel.
摘要:
A reactor has a reactor unit with a first chamber and a second chamber, with the first chamber being formed by the interior of a housing and the second chamber being formed by the interior of a plurality of hollow fibers arranged in the housing. The hollow fibers are arranged in the housing such that their density in at least one region of the first chamber does not exceed 10 fibers/mm2, based on the cross-sectional area of the first chamber. The reactor unit can include two casting compounds, in which a portion of the hollow fibers are embedded and between which another portion of the hollow fibers extends. The length of at least some or all of the hollow fibers is at least 0.5% greater than the distance of the casting compounds.
摘要翻译:反应器具有具有第一室和第二室的反应器单元,第一室由壳体的内部形成,第二室由布置在壳体中的多个中空纤维的内部形成。 中空纤维布置在壳体中,使得它们在第一室的至少一个区域中的密度基于第一室的横截面面积不超过10个纤维/ mm 2。 反应器单元可以包括两种铸造化合物,其中中空纤维的一部分被嵌入并且中空纤维的另一部分延伸。 至少部分或全部中空纤维的长度比铸塑料的距离大至少0.5%。
摘要:
This invention relates to a container having at least one inlet and/or outlet and containing at least two different solids arranged in layers as well as the use of said container for preparing a dialysate. In particular, a flexible bag is described, having three layers of different solids, where the middle layer consists of a solid which is compatible with the two adjacent layers and thus forms a separating layer between the two other layers. The layers are secured in place during shipping by vacuum packing.
摘要:
The work-up of the gaseous products from the thermal cracking of 1,2-dichloroethane is simplified if the cracking gases are cooled to a temperature range of about 150 to 180° C., only a subsidiary proportion, which comprises all the coke formed, being condensed and fed to a separate work-up.
摘要:
The invention relates to a process for the production of an infusion or dialysis solution containing bicarbonate and having a physiologically tolerable pH. In order to retain a solution with a stable physiologically tolerable pH even after heat treatment for sterilization, according to the invention, at least 2 mmol/L of at least one carboxylic acid ester is introduced into the solution beforehand. The solution is subjected to heat treatment above 100.degree. C., so that the carboxylic acid ester decomposes almost completely into carboxylic acid and alcohol. The invention further relates to a use of the process according to the invention for the production of a solution for peritoneal dialysis and a medicinal infusion or dialysis solution.
摘要:
Embodiments of the invention relate to a wound covering having a first strip-like element forming a first periphery and a second strip-like element that faces away from the first periphery, runs approximately parallel thereto, forming a second periphery, and is joined to the first strip-like element, there being formed between the first inner periphery of the strip-like element, facing away from the first periphery, and a second inner periphery of the second strip-like element, facing away from the second periphery, a drainage chamber, the depth of which in a depth direction extending at right angles to the periphery ensures a capillary action on bodily fluids received in the drainage chamber, in particular exudates.