Infiltration cannula
First Claim
1. An infiltration cannula for delivering a multi liter amount of fluid to a patient during an infiltration procedure, the infiltration cannula comprising:
- a rigid stylet;
a flexible tubular cannula with the rigid stylet disposed within the flexible tubular cannula, the flexible tubular cannula comprising;
a proximal portion;
a distal portion defining a distal end, the distal end being open with a hole, and a tip of the rigid stylet protruding through the hole; and
a plurality of apertures disposed in a pattern about the distal portion, the apertures configured to infiltrate the multi-liter amount of fluid into subcutaneous tissue or muscle of a patient;
a hub configured to be held by a person performing the infiltration procedure, the hub having a first end and an opposing second end, the first end being attached to the proximal portion of the flexible tubular cannula, the second end comprising a connector for receiving the fluid to be infiltrated into the subcutaneous tissue of the patient, the fluid flowing from the connector, through the hub and into the flexible tubular cannula; and
a continuous flow pump connected to the connector of the hub and operative to continuously deliver fluid through the hub and the flexible tubular cannula at least until a large reservoir of fluid is infiltrated into the patient at a desired site of the patient.
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Accused Products
Abstract
An infiltration cannula and method of using the infiltration cannula during an infiltration procedure are disclosed herein. The infiltration cannula has a flexible cannula and a hub. The cannula has a proximal end and a distal end. The cannula also has a plurality of apertures disposed in a pattern about the distal end. The apertures are configured to infiltrate fluid into the subcutaneous or muscle tissue of a patient. The hub is configured to be held by a person performing the infiltration procedure. The hub has a first end and an opposing second end. The first end is attached to the proximal end of the flexible cannula and the second end includes 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 flows from the connector, through the hub and into the cannula.
66 Citations
15 Claims
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1. An infiltration cannula for delivering a multi liter amount of fluid to a patient during an infiltration procedure, the infiltration cannula comprising:
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a rigid stylet;
a flexible tubular cannula with the rigid stylet disposed within the flexible tubular cannula, the flexible tubular cannula comprising;
a proximal portion;
a distal portion defining a distal end, the distal end being open with a hole, and a tip of the rigid stylet protruding through the hole; and
a plurality of apertures disposed in a pattern about the distal portion, the apertures configured to infiltrate the multi-liter amount of fluid into subcutaneous tissue or muscle of a patient;
a hub configured to be held by a person performing the infiltration procedure, the hub having a first end and an opposing second end, the first end being attached to the proximal portion of the flexible tubular cannula, the second end comprising a connector for receiving the fluid to be infiltrated into the subcutaneous tissue of the patient, the fluid flowing from the connector, through the hub and into the flexible tubular cannula; and
a continuous flow pump connected to the connector of the hub and operative to continuously deliver fluid through the hub and the flexible tubular cannula at least until a large reservoir of fluid is infiltrated into the patient at a desired site of the patient. - View Dependent Claims (2, 3, 4, 5, 14, 15)
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6. A method of infiltrating a multi-liter amount of fluid into subcutaneous tissue of a patient, the method comprising:
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a) inserting a rigid stylet within an open ended flexible tubular cannula until a tip of the rigid stylet protrudes from the open end;
b) inserting the flexible tubular cannula with the rigid stylet disposed therewithin through a patient'"'"'s skin and into the subcutaneous tissue of the patient at a desired site;
c) removing the stylet from the flexible tubular cannula; and
d) continuously flowing the fluid through the flexible tubular cannula and into the patient via apertures formed along a distal portion of the flexible tubular cannula at least until a large reservoir of fluid has been infiltrated into the patient at the desired site. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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Specification