Infiltration cannula
First Claim
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1. A method of infiltrating fluid into subcutaneous tissue or muscle of a patient, the method comprising:
- a) providing a first cannula having a tubular needle with apertures disposed about a distal portion of the needle;
b) inserting the tubular needle into a hole formed in a skin of the patient;
c) inserting the apertures disposed on the needle into the patient;
d) wedging an enlarged hub which is larger than the tubular needle and the hole into the hole formed in the skin of the patient for forming a seal between the hub and the hole to minimize leakage of fluid to be flowed through apertures of the needle;
e) flowing fluid through the hub and apertures of the needle and into the subcutaneous tissue or muscle of the patient;
f) blocking fluid flow out of the hole due to flow of fluid through apertures disposed on the needle; and
g) repeating steps of a)-f) with a second cannula by inserting the second cannula into the patient adjacent to the first cannula.
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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.
92 Citations
11 Claims
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1. 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 portion of the needle; b) inserting the tubular needle into a hole formed in a skin of the patient; c) inserting the apertures disposed on the needle into the patient; d) wedging an enlarged hub which is larger than the tubular needle and the hole into the hole formed in the skin of the patient for forming a seal between the hub and the hole to minimize leakage of fluid to be flowed through apertures of the needle; e) flowing fluid through the hub and apertures of the needle and into the subcutaneous tissue or muscle of the patient; f) blocking fluid flow out of the hole due to flow of fluid through apertures disposed on the needle; and g) repeating steps of a)-f) with a second cannula by inserting the second cannula into the patient adjacent to the first cannula. - View Dependent Claims (2)
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3. 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 portion of the needle; b) inserting the tubular needle into a hole formed in a skin of the patient; c) inserting the apertures disposed on the needle into the patient; d) wedging an enlarged hub which is larger than the tubular needle and the hole into the hole formed in the skin of the patient for min a seal between the hub and the hole to minimize leakage of fluid to be flowed through apertures of the needle; e) flowing fluid through the hub and apertures of the needle and into the subcutaneous tissue or muscle of the patient; f) blocking fluid flow out of the hole due to flow of fluid through apertures disposed on the needle; and g) removing the first cannula after performing steps a)-f) with a second cannula.
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4. 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 portion of the needle; b) inserting the tubular needle into a hole formed in a skin of the patient; c) inserting the apertures disposed on the distal portion of the needle into the patient; d) flowing fluid through a hub and apertures of the needle and into the subcutaneous tissue or muscle of the patient; e) blocking fluid flow out of the hole formed in the skin of the patient due to flow of fluid through the apertures disposed on the distal portion of the needle; and f) repeating steps of a)-f) with a second cannula by inserting the second cannula into the patient adjacent to the first cannula at a second site; wherein the steps a)-e) are performed with the second cannula after performing step d) with the first cannula for at least one minute. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11)
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Specification