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Installing and Using the Hybrid Assembly
Published in Fred W. Kear, Hybrid Assemblies and Multichip Modules, 2020
The printed conductors on the thick-film substrate are relatively durable and will permit desoldering and resoldering of components with very little risk of failure. However, good repair procedures should be used to remove and replace components. This includes the use of soldering irons with the correct wattage rating. The soldering iron tip should be kept clean and tinned. Solder should be wicked from the joint before an attempt is made to remove the component. Proper tools should be used to grasp the component as it is detached from the substrate. Needle-nose pliers or forceps are suitable for this task. Force must not be used to remove the component, but rather it should be lifted free after the solder is removed or melted. In some cases, component spacing or other layout constraints may preclude complete removal of solder before the component is lifted. If done with care, this is an acceptable procedure.
Sampling and Collection of Particulate Matter For Analysis
Published in Thomas A. Barber, Control of Particulate Matter Contamination in Healthcare Manufacturing, 1999
The necessary equipment for filtration consists of the following: Filter holder, funnel(s) with 100 mL capacity of polysulfone. glass, or other nonshed-ding material. Complete with flask and rubber stopper. Other sizes may be used when necessary.Vacuum source, capable of 25 in. Hg.Petri dishes or slides.Forceps of stainless steel with unserrated tips.Dispensing pressure vessel.Filtering jet solvent dispenser, 25 mm.Membrane filters, 25 mm or larger diameter, compatible with solvent.Cleaned solvents, filtered to a level not to exceed 10 percent of the requirements for the product being tested.
Handtools
Published in Stephan Konz, Steven Johnson, Work Design, 2018
Patkin (1969) showed how a thumb conoid reduced accidental twisting on a surgeon’s forceps. Tremor was reduced by using the thumb to rotate the tool while the forearm was supported. Pointing with the thumb aided movement precision and, since the thumb can move up and down, it could open the jaws. A thumb conoid is better than a thumb ring since (1) it fits multiple thumb diameters, (2) it has greater bearing surface, and (3) it has a wider range of up-and-down movement (since the thumb tip, not knuckle, moves). Figure 14.14 shows how a bayonet forceps was modified to resist turning in the hand.
Design and fluid flow simulation of modified laparoscopic forceps
Published in Computer Methods in Biomechanics and Biomedical Engineering, 2021
Md. Abdul Raheem Junaidi, Ram Chandra Murthy Kalluri, Y. V. Daseswara Rao, Alla Gopala Krishna Gokhale, Aakrit Patel
Material:The material selected for the proposed design should be suitable for repeated use, non-disposable type, and must resist physical and chemical effects due to body fluids, secretions, and sterilization. The material chosen for all the components of the forceps, except the handle, is stainless steel of the Austenitic 300 series or Martensitic 400 series. Aluminum is not preferred due to its thermal properties, reactivity to body fluids, and poor ductile properties. In general, the 420 series stainless steel is used for surgical cutting tools. Hence, 400 series stainless steel is preferred in surgical equipment due to the addition of molybdenum, which gives anti-corrosion property. For inner tube, Austenitic 316 series steel can be used as it also has 2%–3% molybdenum content, which provides better conductivity. The material used for handle head and handle link is polyether ether ketone (PEEK) as it has better chemical and abrasive resistance. Table 1 lists different parts of the forceps with their material and quantity.
A novel design of compliant forceps with serpentine flexures
Published in Australian Journal of Mechanical Engineering, 2022
Libu George B, R. Bharanidaran
The forceps is instruments, which are used for grasping, holding firmly, or exerting traction upon objects, especially for delicate operations. Forceps are commonly used when the fingers are too large to grasp small objects or when many objects need to be held at the same time while hands are used to perform a task. The term ‘forceps’ normally used in the medical field. Outside the medical field, people usually refer to forceps as tweezers, tongs, pliers, clips, or clamps (Ballweg 2008).