Detector of living tissue strength and electrical resistance and activity

• US 6,847,841 B1
• Filed: 11/24/2000
• Issued: 01/25/2005
• Est. Priority Date: 11/22/1999
• Status: Active Grant

• Current Assignee: Mohamed Khaled Mohamed El Hatw
• Original Assignee: Mohamed Khaled Mohamed El Hatw
• Inventors: El Hatw, Mohamed Khaled-Mohamed
• Primary Examiner(s): Hindenburg, Max F.
• Assistant Examiner(s): SZMAL, BRIAN SCOTT
• Application Number:
  US09/721,610
• Time in Patent Office: 1,523 Days
• Field of Search: 608/547, 600/372, 600/382, 600/384, 600/386, 600/461, 600/476, 600/477, 600/478, 600/300, 600/550, 600/562, 600/373, 600/424, 433/27, 433/32, 433/72, 606/130, 606/170, 606/159, 606/205
• US Class Current: 600/547
• CPC Class Codes: A61B 10/0233 Pointed or sharp biopsy instruments
• CPC Class Codes: A61B 2017/00026 Conductivity or impedance, e.g. of tissue
• CPC Class Codes: A61B 5/05 Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves impedance plethysmography A61B5/0295; measuring movement of the entire body or parts thereof A61B5/11; detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof A61B5/24
• CPC Class Codes: A61B 5/0538 invasively, e.g. using a catheter
• CPC Class Codes: A61B 5/20 for measuring urological functions restricted to the evaluation of the urinary system A61B5/4375 takes precedence
• CPC Class Codes: A61B 5/201 Assessing renal or kidney functions
• CPC Class Codes: A61B 5/24 Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
• CPC Class Codes: A61B 5/4519 Muscles A61B5/389, A61B5/224 take precedence

Abstract

A diagnostic cylindrical probe introduced through the body surfaces to the target tissue to detect the resistance of the tissues to piercing, its electrical activity and its resistance to passage of electrical current to identify the nature of the tissue and predict the nature of its pathology during needle biopsy has a sharp piercing tip attached to its end through a coiled wire to slide over the surface of an inbuilt changeable electrical resistance incorporated in an electrical circuit to detect the mechanical resistance of the tissues to piercing, a sensor at its tip incorporated in a second electrical circuit to detect the electrical impedance of the target tissue and a secondary electrically isolated sensor incorporated with the first sensor in a third electrical circuit to detect the electrical resistance of the tissues to passage of electrical current.

Claims

1. A diagnostic cylindrical probe introduced through the body to detect the mechanical resistance of the tissue to piercing, comprising

a cylindrical probe body

a compressible pointed piercing tip having a base mounted at a distal end of the cylindrical probe body through a coiled wire sliding over the surface of an inbuilt changeable electrical resistance and over a metal blade,

a first wire connecting the metal blade to an electrical source, the first wire passing through the body of the probe;

a second wire connecting the electrical resistance to the electrical source, the second wire passing through the body of the probe;

wherein the electrical source is located outside the probe; and

a monitor comprising an Ammeter or Voltmeter to detect the electrical current intensity or voltage with the ability to add a registering unit using sensitive paper to monitor and record the electrical resistance, wherein the nature of the target tissue is detected by changing the mechanical resistance faced by the tip of the probe during its passage in the target tissues into a change in the electrical resistance.

2. A diagnostic cylindrical probe introduced through the body to detect the electrical resistance of the target tissue comprising

a pointed piercing tip including two electrically isolated electrodes connected to an electrical circuit to detect the electrical resistance of the tissue to passage of an electrical current;

a first wire running inside the body of the probe with one of its terminals at the tip of the probe and the other terminal connected to an electrical source;

the electrical source is located outside the probe;

an Ammeter or Voltmeter to detect the electrical current intensity or voltage with possibility of adding a registering unit on sensitive paper and

a second wire running inside the body of the probe with one end connected to the electrical source & and

the other end is located at the tip of the probe near the end of the said first wire,

wherein the nature of the target tissue is detected by monitoring the electrical resistance exerted by the tissue surrounding the tip.

3. A diagnostic cylindrical probe introduced through the bode to detect the electrical activity of target tissue, comprising

an electrical circuit to detect the electrical activity;

a pointed piercing tip electrically isolated from the probe by a transverse insulator to detect the electrical activity of the target tissue;

a first wire running inside the body of the probe with one of its terminals at the tip of the probe and the other terminal connected to an electrical activity monitor; and

a second wire connecting the electrical activity monitor to the body of the probe, which operates as a neutral isoelectric point;

wherein the nature of the target tissue is detected by monitoring the electrical activity of the tissue surrounding the tip.