Hydrogel adhesive for attaching medical device to patient
First Claim
1. In a process for producing a medical device attaching to a patient, the improvement comprising the steps of:
- applying a coating of a precursor composition comprising acrylic acid monomer and an alcoholamine to said medical device; and
polymerizing said precursor composition to produce a hydrogel which is adhesive under both wet and dry conditions.
1 Assignment
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Accused Products
Abstract
A biocompatible hydrogel adhesive which is prepared from a precursor containing acrylic acid and an alcoholamine and is adhesive under both wet and dry conditions. The use of diisopropanolamine provides these unexpected and unique wet tack properties and permits adhesion to wet tissue. Additionally, the use of a polyol which contains hydroxyl groups, such as glycerine, and a diamine, such as 2-methylpentamethylenediamine, is found to provide a hydrogel having wet adhesive properties and longer shelf life. The hydrogel adhesive can be used as an attachment means in conjunction with a biomedical detection or monitoring means. The adhesive may be used to attach a sensor on the skin of an intrautero fetus and to monitor the well being of the fetus during labor and delivery. The hydrogel having wet adhesive properties permits the attachment of a sensor or sensors onto wet tissue. The biocompatible adhesive is used to attach a fetal probe securely to a fetus. The adhesive can be used as an attachment means for a drug delivery or prosthetic device or as an attachment means for fixing a contraceptive device to the wall of the uterus. The attachment means could also be used in the oral cavity to fix a sensor or for oral therapies.
186 Citations
39 Claims
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1. In a process for producing a medical device attaching to a patient, the improvement comprising the steps of:
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applying a coating of a precursor composition comprising acrylic acid monomer and an alcoholamine to said medical device; and polymerizing said precursor composition to produce a hydrogel which is adhesive under both wet and dry conditions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A process for producing a hydrogel adhesive comprising the steps of:
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providing a precursor composition comprising acrylic acid monomer and an alcoholamine; and polymerizing said precursor composition to produce a water-insoluble hydrogel adhesive which is adhesive under both wet and dry conditions. - View Dependent Claims (28, 29)
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30. A process for producing a hydrogel adhesive comprising the steps of:
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providing a precursor composition comprising acrylic acid, diisopropanolamine, water, a photoinitiator, and a crosslinking agent; and polymerizing said precursor composition to produce a hydrogel adhesive which is adhesive under both wet and dry conditions. - View Dependent Claims (31)
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32. A process for producing a hydrogel adhesive comprising the steps of:
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providing a precursor composition comprising up to about 40% water, up to about 30% acrylic acid, 0.3-0.4% photoinitiator, 0.05-0.20% crosslinking agent, and up to about 30% diisopropanolamine; and polymerizing said precursor composition to produce a hydrogel adhesive which is adhesive under both wet and dry conditions. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39)
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Specification