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Tissue liquefaction and aspiration

a tissue and aspiration technology, applied in the field of tissue liquefaction and aspiration, can solve the problems of inability to “turn down” or reduce heat, inability to achieve tissue liquefaction at all, and reduced thermal energy level, etc., to achieve minimally invasive, cost-effective surgery, and efficient

Inactive Publication Date: 2012-08-28
ANDREW MARK S +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0011]The present invention discloses a novel energy source which allows for efficient, safe, minimally invasive, and cost-effective surgery for surgical procedures where the goal of the surgery is to remove unwanted tissue from the body, within a surgical tissue field. The present invention also allows for the differentiation of target tissue from non-target tissue. In other words, the surgical tissue field is defined as the actual anatomical landscape with which the surgeon is physically interacting. Surgical tissue fields are comprised of multiple homogeneous tissue groups. Each of these homogeneous tissue groups has its own melting point. With the present invention, the melting point of a particular tissue group or unwanted tissue is determined in order to liquefy the tissue and rid the patient of the same.

Problems solved by technology

The thermal energy in thermal lasers and ultrasound is inherently high, so the heat cannot be “turned down” or reduced.
In microwave, radio frequency, and electrosurgery the level of thermal energy may be reduced but in so doing, liquefaction of tissue is not achieved at all.
As discussed above, however, in an effort to control the level of energy being produced, all of the plaque may not liquefy.
The heat destroys the tissue which is eventually absorbed into the patient's body.
As a result, healthy tissue may be heated and ultimately destroyed.

Method used

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  • Tissue liquefaction and aspiration
  • Tissue liquefaction and aspiration

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example

[0028]Four pieces of tissue were cut from fresh bovine subcutaneous fat surrounded by muscle tissue and blood vessels. Each piece was approximately two inches by two inches by two inches. Each cube of tissue contained about 95% fat tissue and 5% muscle tissue with some obvious blood vessels present. Two cubes were placed in a control group and two cubes were placed in an experimental group. The control group cubes were taken from the refrigerator and placed in a microwave oven for two five-second intervals at a high temperature setting. This was done in order to raise the temperature of the fat tissue to approximately human body temperature. The two cubes were placed in a tray. A water pik (Teledyne Water Pik, model WP-20W) was set at a pressure setting of 5 which equates to 75 psi. The liquid shoots out at 20 pulses per second. The bolus size per pulse was 0.27 ml. Room temperature tap water was poured into the water pik well. The temperature was measured at 80° F. The tip of the w...

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PUM

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Abstract

A method and apparatus are disclosed for liquefying target tissue within a body and aspirating the same while leaving non-target tissue intact. A biocompatible fluid is heated and contacted with target tissue so that the target tissue is melted while non-target tissue remains intact. As the target tissue is being melted it is also aspirated from the body.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation-in-part of U.S. patent application Ser. No. 10 / 408,604, filed Apr. 7, 2003, now U.S. Pat. No. 6,676,629 which is a continuation-in-part of U.S. patent application Ser. No. 09 / 030,792, filed Feb. 26, 1998, now U.S. Pat. No. 6,544,211, which is a continuation-in-part of U.S. application Ser. No. 08 / 823,713, filed Mar. 25, 1997, now U.S. Pat. No. 6,074,358, which is a division of U.S. application Ser. No. 08 / 384,655, filed Feb. 6, 1995, now U.S. Pat. No. 5,616,120.BACKGROUND OF THE INVENTION[0002]The present invention is directed toward a method for liquefying target tissue within a body and more particularly, toward a method of heating a biocompatible fluid and presenting such to target tissue, thereby liquefying the target tissue and aspirating it while leaving non-target tissue intact.[0003]Prior thermal energy sources used in surgery have been “dry-heat” devices. Some examples are: thermal lasers, ultra...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): A61M1/00
CPCA61C17/0208A61B2017/00172A61B2018/00011A61B2018/00035A61B2018/046A61F9/00736A61M2210/0612A61M1/77
Inventor ANDREW, MARK S.ANDREW, MYLINA
Owner ANDREW MARK S