High pressure pre-burst for improved fluid delivery

Patent metadata

Field	Value
Publication number	US-10548659-B2
Application number	US-55574609-A
Country	US
Kind code	B2
Filing date	Sep 8, 2009
Priority date	Jan 17, 2006
Publication date	Feb 4, 2020
Grant date	Feb 4, 2020

Abstract

A needle with multiple injection ports is used in connection with a high-pressure injection system to infuse a treatment solution into a treatment area below the dermis of the skin. The needle has multiple tines that extend outwardly from the injection ports while inside the treatment area to disrupt tissue in the treatment area and to create multiple pathways of infusion. The tines are withdrawn and the needle is partially withdrawn, and solution is injected from the needle into the treatment area at high pressure to infuse the tissue within the treatment area. The burst, infusion, and a treatment such as an energy or third solution may be interleaved and repeated multiple times.

First claim

We claim:

1. A device, comprising:
a hollow needle having a lumen and a plurality of injection ports comprising at least a first injection port, port A 1 , a second injection port, port A 2 , and a third injection port, port A 3 ,
wherein each of the plurality of injection ports increase in diameter from the proximal to the distal region of the needle, with said port A 3 having an area greater than an area of said port A 2 and the area of said port A 2 being greater than an area of said port A 1 ,
wherein ΣA 1 ≥A needle , and A needle is the cross-sectional area of the needle and A i is the cross-sectional area of the plurality of injection ports,
a plurality of individual channels within the lumen of the needle, the plurality of individual channels being oriented substantially parallel to a central longitudinal axis of the needle, wherein each of the plurality of injection ports is in fluid communication with one of the plurality of individual channels disposed within the lumen of the needle.

2. The device of claim 1 , wherein the plurality of injection ports are staggered.

3. The device of claim 1 , wherein the plurality of injection ports are linearly disposed along the outer surface of the needle.

4. The device of claim 1 , wherein the needle is flexible.

5. The device of claim 1 , further comprising:
a plurality of elongated elements disposed within the needle and capable of movement from a first retracted configuration within the needle through the plurality of injection ports to a second extended configuration outside the needle, wherein the distal ends of the elongated elements are farther apart from each other in the extended configuration than in the retracted configuration.

6. The device of claim 5 , wherein the plurality of elongated elements, at least one elongated element is an electrode, and wherein the at least one electrode is at least partially electrically insulated.

7. The device of claim 5 wherein at least one of the plurality of elongated elements is one of a cutting element and a harmonic scalpel.

8. A device, comprising:
a hollow needle having a lumen and a plurality of injection ports comprising at least a first injection port, port A 1 , a second injection port, port A 2 , and a third injection port, port A 3 ,
wherein said port A 1 is positioned in a proximal region of the needle, said port A 3 is positioned in a distal region of the needle, said port A 2 is positioned between said port A 1 and said port A 3 , each of the plurality of injection ports extending through an outer surface of the needle and in fluid connection with the lumen, and said port A 3 is the distal-most port that extends through the outer surface of the needle; and
wherein each of the plurality of injection ports increase in diameter from the proximal to the distal region of the needle, with said port A 3 having an area greater than an area of said port A 2 and the area of said port A 2 being greater than an area of said port A 1 ,
wherein ΣA i ≥A needle , and A needle is the cross-sectional area of the needle and A i is the cross-sectional area of the plurality of injection ports;
a compressor system in fluidic connection with the needle and configured to pressurize a fluid to be delivered to a destination via the plurality of injection ports,
wherein a placement and cross-sectional area of the plurality of injection ports relative to the needle enables delivery of a volume of the fluid of between 0.1 mL and 20 mL at a pressure between 1 to 200 pounds per square inch and in a plane parallel to a skin surface, when the needle is inserted percutaneously and parallel to the overall surface of the skin, and
a plurality of individual channels within the lumen of the needle, wherein each of the plurality of injection ports is in fluid communication with a corresponding one of the plurality of channels and wherein the plurality of individual channels are each oriented substantially parallel to a central longitudinal axis of the needle.

9. The device of claim 8 , wherein the plurality of injection ports are linearly disposed along the outer surface of the needle.

10. A device, comprising:
a hollow needle having a lumen and a plurality of injection ports comprising at least a first injection port, port A 1 , a second injection port, port A 2 , and a third injection port, port A 3 ,
wherein said port A 1 is positioned in a proximal region of the needle, said port A 3 is positioned in a distal region of the needle, said port A 2 is positioned between said port A 1 and said port A 3 , each of the plurality of injection ports extending through an outer surface of the needle and in fluid connection with the lumen, and said port A 3 is the distal-most port that extends through the outer surface of the needle; and
wherein each of the plurality of injection ports increase in diameter from the proximal to the distal region of the needle, with said port A 3 having an area greater than an area of said port A 2 and the area of said port A 2 being greater than an area of said port A 1 ,
wherein ΣA 1 ≥A needle , and A needle is the cross-sectional area of the needle and A i is the cross-sectional area of the plurality of injection ports; and
a plurality of individual channels within the lumen of the needle,
wherein each one of the plurality of individual channels is in fluid communication with a corresponding one of the plurality of injection ports, and
wherein each one of the plurality of individual channels is oriented substantially parallel to a central longitudinal axis of the needle.

11. The device of claim 10 , wherein the plurality of injection ports are linearly disposed along the outer surface of the needle.

12. The device of claim 10 , wherein the plurality of individual channels is grouped in an array about the central longitudinal axis of the needle.

13. The device of claim 12 , wherein individual channels of the array that are located closer to the central longitudinal axis of the needle terminate at a more distal location along the needle as compared to those individual channels of the array that are located farther from the central longitudinal axis of the needle.

14. The device of claim 10 , wherein the plurality of injection ports are aligned along the needle to allow a fluid released from said needle to be released at a specified angle relative to the central longitudinal axis of the needle.

15. The device of claim 10 , wherein the needle is flexible.

16. The device of claim 10 , further comprising:
a plurality of elongated elements disposed within the needle and capable of movement from a first retracted configuration within the needle through the plurality of injection ports to a second extended configuration outside the needle, wherein the distal ends of the elongated elements are farther apart from each other in the extended configuration than in the retracted configuration.

Assignees

• Chomas James E
• Deem Mark E
• Gifford Hanson S
• Sutton Douglas S
• Ulthera Inc

Inventors

• Chomas James E
• Deem Mark E
• Gifford Hanson S
• Sutton Douglas S

Classifications

• A61N2005/0661

  ultraviolet · CPC title

• A61H2207/00

  Anti-cellulite devices · CPC title

• A61N1/327

  for enhancing the absorption properties of tissue, e.g. by electroporation · CPC title

• A61B2018/1432

  curved · CPC title

• A61B2218/002

  Irrigation · CPC title