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Articles from 2006 In May

IBM, St. Jude Medical Team Up

Leveraging technology ideas from other industries is a good way to advance medical care, and this system appears to be no exception.

Known for Selling, Kensey Nash Becomes Buyer

ILT makes the Safe-Cross System, which treats chronic total occlusions in coronary and peripheral arteries. Kensey Nash has been named one of MD&DI's 50 Companies to Watch and will be featured in the June 2006 issue.

CDRH Adds MDUFMA Goal for 510(k)s But Not PMAs

Device Solution Considered for Asthma

Typically, however, the article focuses only on the doctors experimenting with the treatment and doesn't even mention the manufacturer of the device -- Asthmatx, Inc. of Mountain View, CA.

CDRH Launches Innovation Initiative

Putting Risk into Perspective

In his Boston Globe piece on last week's Heart Rhythm Society conference, Stephen Heuser reports on discussions about how the risks of implantable heart devices need to be put in perspective. He comes to this conclusion: "The predominant message at the convention is that despite all the gee-whiz marketing, despite all the news coverage, despite all the regulation the government can dream up, doctors and patients can't escape a fundamental truth of medicine: There's no such thing as 100 percent sure." Now if only more members of the mainstream media would get the message.

Pumps & Valves


Pumps & Valves

Inert proportional valve

An inert proportional valve is a solenoid-operated diaphragm isolation unit suited for applications involving corrosive or high-purity fluids. The infinitely variable flow control device features a poppet and seat configured to provide bubble-tight leakage characteristics. Rated to 60 psi, the valve is available with numerous porting and electrical connection options. Materials that make up all surfaces in the flow path are inert and impervious to many aggressive fluids.
South Bend Controls Inc., South Bend, IN

Check valves

A line of check valves comprises a variety of styles and is manufactured in ISO Class 8–certified cleanrooms. Included in the product line is an in-line back-check valve, which features a preloaded, normally closed silicone diaphragm that allows flow in a single direction. One-way pressure-activated antisiphon valves and bidirectional luer-activated designs, including needle-free devices, are also available.
NP Medical Inc., Clinton, MA

Gear pumps

Suited for applications with constraining factors such as low-noise operation, low power consumption, and a leakproof design, gear pumps operate with virtually no mechanical friction. The QDM line of miniature magnetically driven gear pumps feature removable heads and are engineered without drive seals. Measuring from 2 to 3.75 in. in length, the pumps are offered in 6-, 12-, and 24-V-dc brush and brushless motor versions. The pumps’ performance range consists of flows up to 1800 ml/min and pressures to 30 psi.
B&D Pumps Inc., Huntley, IL

Valve actuation

Constructed of hard-coated anodized aluminum, brass, and stainless steel, a family of solenoid valves includes both pipe- and Namur-mounted models. The valve series is designed for actuation applications in which solenoid valves must actuate the movement of larger process valves in order to control the flow of liquids or gases. In addition, the valves have a pressure range of 30 to 150 psi and a temperature range from –40° to 75°C. With lubricated air, the valves can achieve a life of up to 2 million cycles, according to the firm.
Parker Fluid Control Div., New Britain, CT

Kynar check valves

Equipped with a Hastelloy spring and a Kynar housing, compact check valves are suited for use in corrosive environments. The units are offered in a push-in style for 1/4- or 3/8-in.-OD tubing, as well as in a compression-style fitting for 1/8- to 3/8-in.-OD tubing. Both configurations are used for connecting to ports of 1/8, 1/4, and 3/8 in. The valves’ working pressure
ranges up to 50 psi.
Pneuline Manufacturing and Supply Inc., Greeley, CO

Piston pump

Incorporating an epoxy-coated head and valve plates for exterior corrosion protection, a piston pump is used for air-vending applications. The WOB-L piston pump is fabricated from die-cast aluminum and is configured with stainless-steel valves and permanently lubricated bearings. Additional features include oilless and nonlube piston and cylinders that prevent airflow contamination, thermally protected ac motors in a split-capacitor design, and twin fans that cool the motor and cylinder.
Thomas Products Div., Sheboygan, WI

Miniature diaphragm pump

A company claims that its advances in brushless dc motors and elastomeric diaphragm materials benefit fluidic applications. As components miniaturize, some diaphragms experience fatigue or tears as a result of inadequate internal heat dissipation, according to the firm. However, the company asserts that its miniature diaphragm pump operates safely in temperature environments up to 70°C and can withstand high mechanical stresses. Moreover, the unit has a brushless dc motor that accommodates the reciprocating radial load exerted by the pump.
Hargraves Technology, Mooresville, NC

Solenoid valves

Boasting Class I, Division 2, approval for hazardous applications, solenoid valves can be used in dangerous locations and for watertight and dust-tight applications. Capable of accepting ac and dc voltages, the RedHat valves’ 2-W power consumption achieves the same performance as a 17-W solenoid valve, according to the company. The valves are available in 100–240-V ac or dc, 24–99-V ac or dc, or 12–24-V dc ranges.
Asco, Florham Park, NJ

Miniature dispense valve

A miniature dispense valve is suited for situations in which full-size valves may be too large or too heavy. The 702V valve provides uniform, drip-free application of UV-cure adhesives, coatings, and other fluids used in medical device assembly. Furthermore, a seal- and O-ring-free configuration ensures consistent shot volumes. The valve is 60% smaller and 70% lighter than typical dispense valves, according to the company.
EFD Inc., East Providence, RI

Needle-free valves

Needle-free valves reduce the need for caps, cannulae, and add-on components, while protecting healthcare providers. The SmartSite valves have a high flow rate and low priming volume in addition to a straight-through fluid path. Characterized by a latex- and DEHP-free design, the units also feature high chemical resistance and swabbable surfaces. The company uses 3-D modeling techniques and mold-flow analysis when developing valves and other products.
Cardinal Health, Alaris Products, San Diego, CA

Copyright ©2006 Medical Product Manufacturing News

Dual-Drug Stent a Reality

Experts have been saying that they foresee the day when stents are used to elute more than one substance. That day is here.




Adhesive for cover tapes

Purposed for vertical- and lateral-flow diagnostic applications, an adhesive for cover tapes simplifies the process of bonding to fiberglass pads. The GL-166 adhesive does not impede sample flow in most applications and can be used on hard-to-bond surfaces. The product is available in printed or nonprinted, clear or white versions.
G&L Precision Die Cutting, San Jose, CA

Pressure-sensitive tape

A pressure-sensitive adhesive tape provides low-tack adhesion to sensitive skin areas
in order to improve patient comfort. The TM9716 tape is suited for use on neonatal, pediatric, and geriatric patients. Device applications include transdermal delivery systems and ECG and nerve-stimulation electrodes. The tape is built on a 1/16-in. closed-cell 4-lb polyethlene foam carrier and is coated on one side with the company’s MP-591 adhesive.
MACtac, Stow, OH

Gravure-coated adhesives

Gravure-coated adhesives are suited for direct-skin medical applications such as dressings, wound care, surgical drapes, and medical device attachment. A cross-hatch-pattern coating process applies a precise volume of adhesive to substrates in a repetitive pattern and reduces the amount of adhesive on the substrate. The adhesive can cover between 50 and 70% of the substrate, and the application process can coat widths up to 60 in.
Scapa Medical, Windsor, CT

UV adhesives

Solvent-free UV adhesives and compatible UV-light curing equipment are available for use in medical device assembly. Possible applications of the adhesives include the assembly of reservoirs, syringes, respiratory masks, catheters, optics, and surgical instruments. The firm also offers bonding studies for device manufacturers who are contemplating using UV-light-curable adhesives and tests the manufacturer’s components on material samples.
Dymax Corp., Torrington, CT

Flexible UV-curable adhesives

Because it is an aliphatic urethane polymer system, a one-component ultraviolet-curable adhesive will remain clear and not yellow over time. UV 60-7100 provides a quick cure, good bonds, and impact and moisture resistance. The product is suited for device applications requiring clarity, low viscosity, and high elongation.
Epoxies, Etc., Cranston, RI

Adhesive nonwovens

Breathable adhesive nonwovens are certified for skin sensitization, skin irritation, and cytotoxicity in accordance with ISO 10993. The adhesive-coated melt-blown polyurethane nonwovens are suited for dressings designed for areas prone to frequent movement, such as elbows, knees, and ankles. The Inspire line of products is offered with a package of test data that characterize the physical properties of the materials, including adhesion.
InteliCoat Technologies, Wrexham, Clwyd, UK

Copyright ©2006 Medical Product Manufacturing News

Did Bausch & Lomb and FDA Act Fast Enough?