Injection and hemostasis site
First Claim
1. A method of suppressing bleeding at a needle insertion site, comprising the steps of:
- inserting a hollow cannula through a point in skin in a vessel of a patient;
thereafter placing a soft, elastomeric pad on the skin of the patient to cover the point of the skin through which the cannula penetrates into the vessel; and
thereafter removing the cannula while simultaneously compressing the pad toward said point in the skin by a force insufficient to collapse the cannulated vessel, said pad having a hardness of no more than about durometer 50 Shore 00, whereby bleeding is immediately terminated and clotting is promoted by the pad.
2 Assignments
0 Petitions
Accused Products
Abstract
A pad of elastomeric material having a softness of no more than about durometer 50 Shore 00. The pad may carry adhesive and/or a housing for adhering the pad to a surface, either directly or indirectly through an envelope which surrounds the pad and carries the adhesive. Such a pad exhibits hemostatic and leak prevention properties against needle puncture holes in the skin or the wall of a hollow medical device. Particularly, hemostasis may be prevented with low pressure application of the pad to the skin. The pad may be previously applied to the skin of the patient or a wall of a medical device such as tubing or a solution bag, and the needle may then penetrate both the pad and the skin or medical device wall, to make a resealable puncture with leakage reduction and hemostasis when the needle is withdrawn.
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Citations
27 Claims
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1. A method of suppressing bleeding at a needle insertion site, comprising the steps of:
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inserting a hollow cannula through a point in skin in a vessel of a patient; thereafter placing a soft, elastomeric pad on the skin of the patient to cover the point of the skin through which the cannula penetrates into the vessel; and thereafter removing the cannula while simultaneously compressing the pad toward said point in the skin by a force insufficient to collapse the cannulated vessel, said pad having a hardness of no more than about durometer 50 Shore 00, whereby bleeding is immediately terminated and clotting is promoted by the pad. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A flexible, hemostasis pad having a flat non-porous surface immediately terminating bleeding upon application of said flat, non-porous surface to a bleeding vessel at a pressure insufficient to collapse said bleeding vessel, said pad having a rounded, convex outer surface, and a hardness of no more than about durometer 50 Shore 00, wherein a central portion of said pad is at least twice as thick as a peripheral portion of the pad at the edge of the pad.
- 18. A flexible, hemostasis pad having a non-porous surface immediately terminating bleeding upon application of said pad to a bleeding vessel at a pressure insufficient to collapse said bleeding vessel, said pad having a rounded, convex outer surface, and a hardness of no more than about durometer 50 Shore 00, the pad being substantially transparent, wherein a central portion of said pad is at least twice as thick as a peripheral portion of the pad at the edge of the pad.
- 20. A flexible, hemostasis pad having a non-porous surface immediately terminating bleeding upon application of said pad to a bleeding vessel at a pressure insufficient to collapse said bleeding vessel, said pad having a rounded, convex outer surface, and a hardness of no more than about durometer 50 Shore 00, wherein the pad comprises an elastomeric material, and said pad is substantially transparent and has a central portion which is substantially at least twice as thick as a peripheral portion of the pad at the edge of the pad.
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22. A method of suppressing bleeding at a needle insertion site, comprising the steps of:
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inserting a hollow cannula through a point in the skin of a patient to cannulate a vessel; positioning a nonporous surface of a substantially transparent, soft pad against the skin of the patient to cover the point on the skin through which the cannula penetrates, and thereafter removing the cannula, while simultaneously during the removal process pressing said pad against said point and surrounding skin with a force insufficient to collapse the cannulated vessel, said pad being substantially transparent and having a hardness of no more than about durometer 50 Shore 00, whereby bleeding from said point is immediately terminated and clotting is promoted by the pad. - View Dependent Claims (23, 24, 25, 26, 27)
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Specification