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Constant section or uniform section rings are often interchangeable with stamped rings. They will function in a housing or on a shaft as well a

According to USFDA, a combination product is one composed of any combination of a drug and device; biological product and device; drug and biological product

s or better than their stamped ring replacements. Interchangeability is offered in both internal and external series rings. Internal rings are

; or drug, device, and biological product and fixed dose combination would include two or more combinations of drug.

Examples of combination products may in

designed to fit into a housing and spring up into a groove exerting radial tension outward from the ring center. External rings slide over a sh

lude drug-coated devices, drugs packaged with delivery devices in medical kits, and drugs and devices packaged separately but intended to be used together.

ft and snap into a groove exerting radial tension toward the ring center.

There are many different types of retaining rings. Shown below are a

here is enormous increase in the number of combination products entering the market in the recent years. Combination products have proven advantages but fixe

few ways that we can customize a retaining ring. They are material, shaped wire, and finish or coating.

Standard and Special Materials

Carbo

d dose combinations are still in the process of convincing regulatory authority on their advantages over the single ingredient formulations.

Combination pro

n spring steel (SAE 1060 - 1095) is the standard material used in the manufacture of retaining rings, snap rings and bearing rings. In addition

ucts have become life saving products for the pharmaceutical companies who doesn’t have many innovative molecules in their product pipeline and have been inc

carbon steels SAE 1065 to 1095 are used to manufacture pretempered and hard drawn wire. The hardness is measured using Rockwell testing method

easingly used in the product life cycle management. Even the companies having product patents are trying to extend their product life cycle through the combi

s and ranges from 42 to 53 C scale with tensile strengths from 192,000 P.S.I. to 280,000 P.S.I. These hardnesses and tensiles are achieved by u

nation products and maximize the revenues. But the companies involved in this practice are overlooking that they are burdening the patients both economically

sing the Mar Tempering process when it is necessary to attain maximum reaction, and allow greater working stresses of the ring. We have also ma

and physically. They need to rightly judge the benefits of the combination products and they have to even look at the risks involved when combining the produ

e rings in stainless steel.

Cross Sectional Shapes

Cross sectional shapes are also available in great variety, dependent upon ring function o

ts. Some of the combination products were well accepted by physicians while others suffered. Companies involved in development of combination products are fi

r variable factors in mating components. The most popular sections used are rectangular, square, or round in shape. However, the Massillon plan

ding difficulty in defining their combination products and facing various challenges from selecting a combination to marketing it.

Following aspects would a

t facilities include a complete wire finishing mill that allows great versatility in meeting customer requirements in this area. Shown below ar

dd to the challenges in developing combination products:

Which markets to tap where the combination products can do fairly well?
Which combination prod

some of the many cross sectional profiles we are in a position to supply.

Ring Finish Information

Corrosion inhibition is achieved in a numb

cts are meaningful and rational?
Which therapeutic categories to select?
Which Combinations can address unmet needs of the patients?
Do combin

er of ways, with the standard being an oil base rust preventative for carbon steel rings. Special packaging is provided for parts subject to ex

tions increase the patient compliance?
What would be the developing cost?
How to tackle the risks encountered during combination product developmen

treme conditions that cause corrosion. Please forward direct plating and finish questions to a Ring Masters Engineer or sales representative. S

t?

As combination products don't fit into the traditional categories of drugs, medical devices, or biological products, the USFDA is in the process of devel

condary finish operations are directly affected by ring diameter and gap dimension. The types of finishes we normally apply are zinc plating, c

ping new procedures for reviewing their safety, efficacy and quality.

Professional from academic institutions, pharmaceutical industries, health care indust

hrome, copper and we can parkerize the ring. All of the finish work is down through an outside service.

The test methods for evaluating corros

y and representatives from various regulatory agencies are working out to design the regulatory requirements for manufacture and sale of combination products

ion resistant finishes are used which meet all industry standards. The following shows the methods that allow strict adherence to customer spec

.

As there is an increasing trend of the combination products companies manufacturing such products should be able to tackle the problems involved in the de

fication regarding finish thickness and corrosion resistance:

1. Kocour Acid Dropping Test

2. Microsopic examiniation of cross sections

3. S

elopment. They need to be wiser in analyzing the market trends and the regulatory requirements.

Companies that provide selfless information through particip

alt Spray Test ASTM-B117

If you need help, the engineering and sales staff can help identify the correct replacement part for your application

tion in industry events and feedback to regulatory authorities would be able to face the challenges and will be successful in developing combination products

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Should you just be grateful you have a job, or is it time to move on to something better?

The key function of staff co-ordination in the company's tasks implementation is led by management personnel. These tasks usually evolve such concepts as strategy development, planning, execution and benchmarking. Good managers are to provide the company's business success along with positive human resources relations and interaction.

There is a class of management... equivalent to 2nd lieutenants. I call this class of management 'most-management'. This article looks at the kinds of communication that exist in a job and how these are handled or not handled by most-managers.

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Advice You - If You're In The Market For Retaining Rings or Snap Rings, Read This First

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