INFILTRATION CANNULA
First Claim
1. An infiltration cannula insertable into an adit of a patient for infiltrating fluid into the patient, the infiltration cannula comprising:
- a tubular needle defining a proximal end, the needle comprising a plurality of apertures disposed in a pattern between about 33% to about 100% of the distal end portion, the apertures configured to infiltrate fluid into subcutaneous tissue or muscle of a patient; and
a hub configured to be held by a person infiltrating the fluid into the patient, the hub having a first end and an opposing second end, the first end being attached to the proximal end of the tubular needle, the second end comprising a connector configured to connect to an input source for receiving the fluid to be infiltrated into the subcutaneous tissue of the patient, the fluid lowing from the connector, through the hub, into the cannula, through the plurality of apertures and into the patient.
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Accused Products
Abstract
An infiltration cannula and method of using the infiltration cannula during a tumescent infiltration procedure are disclosed herein. The infiltration cannula may have an outwardly flaring hub which may be wedged into an adit of a patient to minimize leakage of fluid being infiltrated into the patient. Also, the infiltration cannula may be utilized to hydrate a dehydrated patient by a medically untrained person. The infiltration cannula may also be used to deliver an antibiotic/vasoconstrictive drug solution to minimize surgical site infections.
2 Citations
25 Claims
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1. An infiltration cannula insertable into an adit of a patient for infiltrating fluid into the patient, the infiltration cannula comprising:
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a tubular needle defining a proximal end, the needle comprising a plurality of apertures disposed in a pattern between about 33% to about 100% of the distal end portion, the apertures configured to infiltrate fluid into subcutaneous tissue or muscle of a patient; and a hub configured to be held by a person infiltrating the fluid into the patient, the hub having a first end and an opposing second end, the first end being attached to the proximal end of the tubular needle, the second end comprising a connector configured to connect to an input source for receiving the fluid to be infiltrated into the subcutaneous tissue of the patient, the fluid lowing from the connector, through the hub, into the cannula, through the plurality of apertures and into the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 24)
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8. A method of infiltrating fluid into subcutaneous tissue or muscle of a patient, the method comprising:
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a) providing a first cannula having a tubular needle with apertures disposed about a distal 33% to 100% end of the needle; b) inserting the tubular needle into an adit of the patient; c) inserting all of the apertures disposed on the needle into the patient; d) wedging an outwardly flaring hub into the adit for forming a seal between the hub and an inner periphery of the adit to minimize leakage of fluid to be flowed through apertures of the first cannula; e) flowing fluid through the hub, apertures and into the subcutaneous tissue of the patient; f) blocking fluid flow out of the adit between the needle and the skin of the patient due to flow of fluid through proximal apertures disposed on the needle. - View Dependent Claims (9, 10, 11, 12)
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13. A method of minimizing infections at a surgical site, the method comprising the steps of:
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providing a solution containing an antibiotic and a vasoconstrictive drug; inserting a tubular needle having apertures into an adit of the patient such that the tubular needle is adjacent the surgical site to infiltrate the solution at the surgical site; flowing the antibiotic/vasoconstrictive drug solution through the tubular needle and out of the apertures to constrict the blood vessels and delay systemic absorption of the antibiotic for prolonging a length of lime that the antibiotic remains at the surgical site; and performing surgery at the surgical site. - View Dependent Claims (14, 15)
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16. A method of hydrating a dehydrated patient, the method comprising the steps of:
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providing a hydrating solution in a container; inserting a flexible tubular needle connected to the container of hydrating solution into the patient; flowing the hydrating solution through the flexible tubular needle, out of apertures disposed on the flexible tubular needle and into the patient for hydrating the dehydrated patient. - View Dependent Claims (17, 18)
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19. An infiltration cannula insertable into an adit of a patient for infiltrating fluid into the patient, the infiltration cannula comprising:
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a flexible tubular needle defining a hollow center, the needle comprising a plurality of needle apertures disposed in a pattern between about 33% to about 100% of the distal end portion, the needle apertures configured to infiltrate fluid into subcutaneous tissue or muscle of a patient; and a rigid stylet having a plurality of stylet apertures disposed in a pattern between about 33% to about 100% of the distal end portion, the stylet apertures configured to infiltrate fluid into subcutaneous tissue or muscle of a patient, the stylet being sized and configured to be removeably insertable within the hollow center of the tubular needle. - View Dependent Claims (20, 21, 22, 23, 25)
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Specification