Infiltration cannula

• US 8,246,587 B2
• Filed: 03/01/2011
• Issued: 08/21/2012
• Est. Priority Date: 05/21/2003
• Status: Active Grant

• Current Assignee: Jeffrey A. Klein
• Original Assignee: Jeffrey A. Klein
• Inventors: Klein, Jeffrey A.
• Primary Examiner(s): BOUCHELLE, LAURA A
• Application Number:
  US13/037,756
• Publication Number:
  US 20110152837A1
• Time in Patent Office: 539 Days
• Field of Search: 604/35, 604/506, 604/187, 604/239, 604/272, 604/264, 604/542, 604/902, 604/246, 604/93.01
• US Class Current: 604/264
• CPC Class Codes: A61M 25/0068 Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
• CPC Class Codes: A61M 25/007 Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
• CPC Class Codes: A61M 25/01 Introducing, guiding, advancing, emplacing or holding catheters A61M25/10 takes precedence
• CPC Class Codes: A61M 25/06 Body-piercing guide needles or the like
• CPC Class Codes: A61M 37/00 Other apparatus for introducing media into the body for reproduction or fertilisation A61B17/425; apparatus for iontophoresis or cataphoresis A61N1/30; Percutany, i.e. introducing medicines into the body by diffusion through the skin salt baths A61H33/04
• CPC Class Codes: A61M 5/158 Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body

Abstract

An infiltration cannula and method of using the infiltration cannula during an infiltration procedure are disclosed herein. The infiltration cannula includes: a tubular needle and a hub. The tubular needle has a proximal end and a distal end. The tubular needle also has a plurality of apertures disposed in a pattern about the distal end. The apertures are configured to infiltrate fluid into the subcutaneous 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 tubular needle 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 tubular needle.

Claims

1. An infiltration cannula for use in an infiltration procedure, the infiltration cannula comprising:

a tubular needle having a plurality of apertures disposed in a pattern and distributed over a distal 33% or more of the tubular needle, the apertures being configured to infiltrate a multi liter amount of fluid into subcutaneous tissue of a patient, a proximal portion of the tubular needle being devoid of apertures to prevent leakage or the fluid from the needle to outside 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 end of the tubular needle, the second end comprising a connector for receiving the fluid to be infiltrated into the subcutaneous tissue of the patient, the connector being in fluid communication with the hub and the tubular needle; and

a continuous flow liquid pump connectable to the connector of the hub and operative to continuously deliver a multi liter amount of the fluid through the hub and the tubular needle.

2. The infiltration cannula of claim 1 wherein the infiltration pump is a peristaltic pump.

3. The infiltration cannula of claim 1 wherein the infiltration procedure is performed in conjunction with a liposuction procedure.

4. An infiltration cannula for use in an infiltration procedure, the infiltration cannula comprising:

a single tubular needle having a plurality of apertures;

disposed in a pattern and distributed over a distal 33% or more of the tubular needle, each of the plurality of apertures being about equal in size to the other apertures of the plurality of apertures, the apertures being configured to infiltrate a multi liter amount of fluid into subcutaneous tissue of a patient, a proximal portion of the tubular needle being devoid of apertures to prevent leakage of the fluid from the needle to outside 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 end of the tubular needle, the second end comprising a connector for receiving the fluid to be infiltrated into the subcutaneous tissue of the patient, The connector being in fluid communication with the hub and the tubular needle.