Boots – shoes – and leggings – Orthopedic boot or shoe with corrective element
Reexamination Certificate
2001-06-28
2003-11-11
Stashick, Anthony D. (Department: 3728)
Boots, shoes, and leggings
Orthopedic boot or shoe with corrective element
C036S00900A, C036S088000, C036S026000, C036S055000
Reexamination Certificate
active
06643956
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention is generally related to the field of protective footwear and more specifically, is directed to an orthopedic slipper for suffers of diabetes, neuropathy, arthritis, peripheral vascular disease and anyone else desiring safe indoor footwear.
According to current data from the American Diabetes Association, over 16 million people in the United States have diabetes, and about 1,800 new cases are diagnosed of the disease every day. In addition, the National Institute of Diabetes and Digestive and Kidney Diseases have stated that, at least 15% (2.4 million) of all people with diabetes eventually develop foot ulcers. It is believed that this condition leads to an estimated 40,000 surgical amputations every year. It is also estimated that cardiovascular disease contributes an additional 20,000 surgical amputations years.
The World Health Organization (WHO) estimates that over 160 million people, worldwide suffer from some form of diabetes. Diabetics are especially prone to foot ulcers (an open cut or wounds on the feet), that may become seriously infected and possibly necessitate surgical amputation. In diabetics, once foot ulcer develops, they are difficult to treat. In fact, a diabetic patient may not be aware of any foot wounds because of sensory neuropathy, a nervous system disorder that restricts the ability to feel pain, particularly in the feet and legs. By the time such wounds are discovered, foot amputation may be the only solution to prevent fatality.
Poorly controlled diabetes may also lead to cardiovascular disease, a common complication that restricts blood circulation, especially to the lower legs. This means cuts and other foot injuries heal very slowly and become receptive to serious infection which may in turn lead to surgical amputation.
As a result of the two complications described above, estimated 60,000 surgical foot amputations are carried out each year, the cost of such procedures exceed $100 billion annually. Other known effects of foot ulcers and cardiovascular disease are disability, prolonged hospitalization, strokes and in certain cases death.
It is estimated that nearly three quarters of foot amputations could be prevented with proper foot care. Thus, a great deal of expense, medical suffering and anguish could be saved or eliminated altogether if diabetes patients protected themselves from the minor accidents that occur in and out of their homes.
Even though outdoor accidents are prevented by most of the protective shoes in the market today, research has shown that no protective shoes exist for indoor wear. These outdoors special shoes may be capable of preventing injuries to the foot outside the homes, they are not adaptable for indoor wear, and even if adaptable, they are very expensive to the average diabetic. Emphasis is often placed on glamour rather than medical needs and comfort ability of the patients.
There have been a number of attempts in the prior art to address the problems noted above with respect to diabetics and their foot care needs. For example U.S. Pat. No. 5,491,909, which issued in the name of Darby, discloses a shock absorbing medical shoe. However, the shoe is open toed and therefore can not serve to protect the entire foot from accidental injury. There also is no firm medial counter for reducing abnormal pronatory forces. Moreover, the shoe does have a moldable insole and thus, can not conform to the foot that wears it.
U.S. Pat. No. 5,566,479, which issued in the name of Gray et al., is directed to a shoe construction for use by diabetic persons. While an improvement over the Darby design with respect to providing more complete protection for the foot, the shoe disclosed by the Gray patent remains deficient in a number of areas. For example, the shoe is not designed for indoor use and is not designed to conform to the wear's foot.
U.S. Pat. No. 5,545,129, which issued in the name of Snook merely discloses a supportive foot cushion. Thus, it does not cover the entire foot which is required in order to provide complete foot protection.
Accordingly, there exists a need to provide orthopedic footwear which is better suited for diabetics and other suffers of foot conditions than footwear currently known in the art.
SUMMARY OF THE PRESENT INVENTION
Accordingly, it is an objective of the present invention to obviate the above-noted shortcomings and disadvantages of present orthopedic shoes and related devices.
It is a further objective of the present invention to provide an orthopedic slipper which is easy and convenient to use. It is a still further objective of the present invention to provide an orthopedic slipper which is economical to make and simple to use.
It is a further objective of the present invention to provide an orthopedic slipper which is more economical than prior art approaches.
It is a still further objective of the present invention to provide an orthopedic slipper which protects the entire foot from accidental injury.
It is another objective of the present invention to provide an orthopedic slipper which conforms to the wear's foot.
The present invention provides a novel and unobvious slipper for use by people with normal foot anatomy or with mild malady i.e., bunions, hammertoes and other bony prominences. The slipper is fabricated to have a mild rocker bottom sole with mild flexibility, allowing the wearer to roll through the gait cycle. A long firm medial counter, is in place, giving greater support and decreasing pronatory forces.
Other features include a non-penetrable and anti-skid outer sole, lambs wool inner lining along with a body heat moldable insole that contours to the foot. Also, there is a high, firm protective, closed toe box, preventing stubbing or blunt injuries.
Lastly, the slipper is light weight and has firm protective sides. The upper material, outer wall of Applicants' slipper can be made of any durable, breathable, stable, protective material. Inner lining must be made of breathable, non-irritating, protective material, like lambs wool or non-irritating synthetics and or plastizote materials. The expandable gores allow for swelling and easy access for the elderly and the arthritic. There is also a padded full-length upper heel collar for protection of the Achilles tendon and malleolar regions. There are no straps, laces or buckles for easy access into the slipper and this helps to provide even distribution of pressure
Applicants' slipper provides substantial novel and unobvious improvements over the so-called orthopedic shoes and footwear know in the prior art. For example, the primary objective of the medical shoe disclosed in the Darby patent is to provide footwear protection and support following surgery or other injuries to the foot when normal footwear can not be worn. The primary objective of the orthopedic slipper of the present invention is to provide protective, comfortable, custom, indoor, footwear for the diabetic and any other group, at risk for skin ulcers that can lead to limb loss.
The shoe disclosed in the Gray patent is not a slipper and is not designed for indoor use. There is no heat (body) moldable insole which allows the shoe to better conform to the wearer's foot. The purpose of the Gray invention is to provide relief areas in the shoe that have sensors on them to alert the wearer if there is too much pressure. This shoe does not protect the wearer from blunt injuries.
The Snook cushion is clearly not a slipper. It is not intended to cover the entire foot. The cushion does not make a permanent impression of the wearer's foot because of its memory. The orthopedic slipper of Applicants' invention, however, includes a plastizote combination that will be protective to the wearer and give a custom impression of their foot.
In summary each of the above patents are intended to be worn by a person having some form of foot abnormality. The diabetic orthopedic slipper of the present invention can be worn by diabetics with or without neuropathy, arthritis, peripheral vascular disease and the gener
Kibwe Calvin S.
Mawusi Earnest P. S.
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