Devices and methods for selectively lysing cells

Patent metadata

Field	Value
Publication number	US-9248317-B2
Application number	US-77193207-A
Country	US
Kind code	B2
Filing date	Jun 29, 2007
Priority date	Dec 2, 2005
Publication date	Feb 2, 2016
Grant date	Feb 2, 2016

Abstract

A device for generating microbubbles in a gas and liquid mixture and injection device, the device comprising: a housing defining a mixing chamber; means for mixing solution contained in the mixing chamber to generate microbubbles in the solution; a needle array removably attached to the housing and in fluid connection with the mixing chamber, the needle array including at least one needle; and a machine readable identifier on the needle array.

First claim

What is claimed is:

1. A device for generating a solution having microbubbles and injecting the solution having microbubbles into a target tissue, said device comprising:
a housing comprising a first and a second mixing chamber interconnected by a pathway;
a liquid reservoir configured to contain a solution, said liquid reservoir in fluidic communication with the first mixing chamber;
wherein the second mixing chamber is in fluidic communication with a gas source comprising a gas,
wherein the mixing chambers are configured to mix the solution and the gas to generate the solution having microbubbles;
a needle array removably attached to the housing and in fluid connection with said mixing chambers to inject the solution having microbubbles into a target tissue;
a machine readable identifier on said needle array; and
an injection control unit for using information stored on the machine readable identifier to adjust injection depth or injection flow rate of the needle array or to prevent deployment of the needle array.

2. The device of claim 1 , wherein said identifier uniquely identifies the needle array.

3. The device of claim 1 , wherein the identifier identifies characteristics of the needle array.

4. A device for generating a solution having microbubbles and injecting the solution having microbubbles into a target tissue, said device comprising:
a housing comprising a first and a second mixing chamber interconnected by a pathway;
a liquid reservoir configured to contain a solution, said liquid reservoir in fluidic communication with the first mixing chamber,
wherein the second mixing chamber is in fluidic communication with a gas source comprising a gas;
wherein the mixing chambers are configured to mix the solution and the gas to generate the solution having microbubbles;
a needle array removably attached to the housing and in fluid connection with said mixing chambers to inject the solution having microbubbles into the target tissue;
a needle deployment mechanism operably connected to said needle array for deploying needles between a retracted and an extended position; and
the needle deployment mechanism configured to inhibit unintended deployment of the needles.

5. The device of claim 4 , wherein said needle deployment mechanism inhibits deployment of the needles if the needles are not authenticated.

6. The device of claim 4 , wherein the needle deployment mechanism comprises a spring mechanism configured to move the needles between the retracted and extended positions.

7. The device of claim 4 , wherein each of the first and second mixing chambers comprises a reciprocating piston, wherein the device further comprises a power source, wherein said power source drives the reciprocating pistons, and wherein the reciprocation of the pistons is configured to cause mixing of the solution and the gas, thereby generating the solution having microbubbles.

8. The device of claim 4 , wherein the gas source comprises ambient environmental gas.

9. The device of claim 4 , wherein the gas source comprises a gas reservoir.

10. The device of claim 4 , further comprising at least one of a fluid metering device and a gas metering device.

11. A device, comprising:
a housing defining a mixing chamber;
means for mixing solution contained in said mixing chamber to generate microbubbles in the solution;
a needle array removably attached to the housing and in fluid connection with said mixing chamber, said needle array including at least one needle, said needle array includes a tissues apposition surface;
said at least one needle includes a distal end, said at least one needle being moveable between a retracted position in which said distal end of the needle is maintained beneath the tissue apposition surface and an extended position in which said distal end of the needle extends beyond said tissue apposition surface;
a machine readable identifier on said needle array; and
means for reading the identifier operably connected to a fluid pressurization mechanism.

12. The device of claim 11 , wherein said fluid pressurization mechanism adjusts the fluid injection pressure in response to information read from the identifier.

Assignees

• Merchant Adnan I
• Deem Mark E
• Ulthera Inc

Inventors

• Merchant Adnan I
• Deem Mark E

Classifications

• A61B2017/22008

  used or promoted · CPC title

• A61N2007/0039

  using microbubbles · CPC title

• A61N2007/0008

  Destruction of fat cells · CPC title

• A61B2017/00747

  Dermatology · CPC title

• A61N1/327

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