|Publication number||US3698394 A|
|Publication date||17 Oct 1972|
|Filing date||14 Jun 1971|
|Priority date||14 Jun 1971|
|Publication number||US 3698394 A, US 3698394A, US-A-3698394, US3698394 A, US3698394A|
|Inventors||Piper William S, Polak Teodor|
|Original Assignee||Polak Teodor, Piper William S|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (5), Referenced by (40), Classifications (7)|
|External Links: USPTO, USPTO Assignment, Espacenet|
154] ELECTRICALLY HEATED HYPODERMIC NEEDLE  Inventors: William S. Piper, 555 Greencraig Road; Teodor Polak, 443 Greencraig Road, both of Los Angeles,
Calif. 90049 221 Filed: June 14, 1971  Appl. No.: 152,549
[ Oct. 17, 1972 1,355,932 10/1920 Walter ..l28/303.l 1,913,595 6/1933 Hyman et a1. ..l28/303.l8 2,516,882 8/1950 Kalom ..l28/303.l8 X 3,301,258 1/1967 Werner et a1 l 28/303.l
Primary Examiner-Channing L. Pace [5 7] ABSTRACT A surgical instrument is provided in the form of a hypodermic needle, the tip of the needle being heated s2 U.S.Cl .Q ..128/303.1, 128/404 by Passing an electric current through a resistance [51 lnt.C1. ..A6lb 17/36, A6ln 3/06 wire Within the needle adjacent its The needle has 581 Field of Search ..128/303.l, 303.18, 404 particular utility for medical p p and is used, r
example, to destroy blood vessels or tissue.  References Cited 7 Claims, 3 Drawing Figures UNITED STATES PATENTS .w .7 r
1,234,570 7/1917 Rink ..128/303.1 ux
fig'ggj gz y aderm/k/Veel/e Jamar/f0 z/ (f4 2 l a: 21:4 ow ear/r 4m? f y/d ,9 i farm/mm? W? W Care 50am? 0/} PATENTEDUCI 17 1972 3.698.394
@ZZZZQZ/ Wa/ewmt/VaeJ/e ammwa:
ELECTRICALLY HEATED HYPODERMIC NEEDLE BACKGROUND OF THE INVENTION A medical need often arises for the destruction of small veins, and this is achieved simply and effectively by the surgical instrument of the invention. In the practice of the invention, a needle is inserted percutaneously into a vein, and electric current is passed through the needle at a rate sufficient to heat its tip. This results in immediate destruction of the vein and subsequent disappearance thereof.
BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a perspective view, on an enlarged scale, of a surgical instrument in the form of a hypodermic needle constructed in accordance with the invention;
FIG. 2 is a side section taken along line 2-2 of FIG. 1; and
FIG. 3 is a side section, like FIG. 2, of a modified embodiment of the invention.
DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENT The surgical instrument illustrated in the FIGS. 1 and 2 of the drawing includes a usual hollow hypodermic needle which may, for example, be a No. 27 needle having a 16 mil outer diameter and a 9 mil inner diameter, the needle being composed, for example, of surgical steel. A wire 12 of low resistance and high electrical conductivity is positioned coaxially within the hypodermic needle 10, the conductor 12 being insulated from the needle by any appropriate electrical insulation designated 14.
The conductor 12 may be composed, for example, of copper wire of 4 mil diameter. The copper wire 12 terminates at a point displaced from the tip of the needle 10. A high resistance wire 16 is positioned within the needle in axial alignment with the conductor 12, the high resistance wire 16 extending from the end of the conductor 12 to a point adjacent the tip of the needle. The high resistance wire 16 may have a diameter, for example, of 3.5 mils, and it may be composed of a nickel chrome alloy.
An appropriate end fitting may be provided at the right hand end of the needle in FIGS. 1 and 2. This fitting may have any appropriate known configuration. The fitting is not shown since it does not have any significance to the present invention.
The resistance element 16 is bonded to the end of the conductor 12 by a silver braze, for example, or by other suitable means serving as an electrical and mechanical connection between the high resistance wire and the conductor 12. The other end of the high resistance wire 16 is bonded to the tip of the needle by, for example, similar means. The electrical and mechanical connection between the high resistance wire 16 and the conductor 12 designated 18, and the electrical and mechanical connection between the other end of the resistance element 16 and the tip of the needle 10 is designated 20.
The insulation 14, as shown, extends around the high resistance wire 16, as well as around the conductor 12, so that both are insulated from the needle 10, except for the connection between the end of the high resistance wire 16 and the needle 10, as designated 20.
The right-hand end of the conductor 12 and of the needle 10 may be connected to an appropriate source of electric power, either direct current or alternating current, and designated 22. Then, when electric power is applied from the source 22, the resulting electric current flows through the conductor 12 and through resistance element 16, and back to the needle 10, causing the resistance element 16 to become heated, thereby o heating the tip of the needle l0.
In the practice of the invention, the hypodermic needle is inserted percutaneously into the vein of the patient, and the tip is internally heated by passing the aforesaid alternating or direct current through the high resistance wire 16 inside the needle. All or part of the needle can be heated depending on the length and place of the wire 16. The power source 22 may be controllable, so as to control the temperature of the heated portion of the needle.
Alternatively, the needle can be constructed as shown in FIG. 3 in which a high resistance wire core 14a extends the length of the needle. The high resistance wire core is coated (by means of electroplating or otherwise) with a low resistance metal 12a, such as copper or silver, except for the portion of the needle where heat is desired. The high resistance wire core 14a can be manufactured with a continuous coating which can be selectively removed prior to assembly in the needle by chemically dissolving it or by abrasion.
As mentioned above, the surgical instrument of the invention has particular utility whenever it is desired to destroy small blood vessels, veins and tissue.
It will also be appreciated that although a particular embodiment of the invention has been shown and described, modifications may be made, and it is intended in the following claims to cover all modifications which come within the scope of the invention.
What is claimed is:
l. A surgical instrument comprising: a hollow hypodermic needle having a pointed tip and composed of electrically conductive material; an elongated electrical conductor extending in coaxial relationship within said needle;'electrically insulating means interposed between said conductor and said needle for insulating said conductor from said needle; an electrical resistance element mounted within said needle; and means electrically connecting said resistance element to said needle and to said conductor, so that electric current passed through said needle and through said conductor passes through said electrical resistance element to heat a portion of said needle.
2. The surgical instrument defined in claim 1, in which said resistance element is in the form of a wire positioned in axial alignment with said conductor adjacent the tip of said needle.
3. The surgical instrument defined in claim 1, in which said needle is composed of surgical steel.
4. The surgical instrument defined in claim 1, in which said elongated electrical conductor comprises a copper wire.
5. The surgical instrument defined in claim 1, in which said electrical resistance element has an elongated configuration and is disposed within said needle in axial alignment with said conductor.
6. The surgical instrument defined in claim- 1, in which said resistance metal is composed of a nickel chrome alloy.
7. The surgical instrument defined in claim 1, in
which said elongated electrical conductor comprises a high resistance wire coated with a low resistance metal except for that portion of the needle where heat is desired. 5
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US1234570 *||31 Jan 1917||24 Jul 1917||Sharp & Smith||Electric cauterizer.|
|US1355932 *||5 Jul 1919||19 Oct 1920||Allen J Walter||Combined sound and heating element|
|US1913595 *||12 Mar 1930||13 Jun 1933||Henry Hyman Charles||Artificial pace maker for the heart|
|US2516882 *||22 Jan 1948||1 Aug 1950||Lawrence Kalom||Electrical probe|
|US3301258 *||3 Oct 1963||31 Jan 1967||Medtronic Inc||Method and apparatus for treating varicose veins|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3875944 *||4 Feb 1974||8 Apr 1975||Philip M Toyama||Heated acupuncture needle and method of using the same|
|US3886944 *||19 Nov 1973||3 Jun 1975||Jamshidi Khosrow||Microcautery device|
|US4142529 *||20 Jun 1977||6 Mar 1979||Bio-Tronics, Inc.||Process and device for the therapeutic treatment of hemorrhoids|
|US4227535 *||2 Apr 1979||14 Oct 1980||Bio-Tronics, Inc.||Proctologic device for the therapeutic treatment of hemorrhoids|
|US4269174 *||6 Aug 1979||26 May 1981||Medical Dynamics, Inc.||Transcutaneous vasectomy apparatus and method|
|US4411266 *||24 Sep 1980||25 Oct 1983||Cosman Eric R||Thermocouple radio frequency lesion electrode|
|US4527560 *||27 Oct 1982||9 Jul 1985||Masreliez Carl J||Medical or dental probe with self-heating tip and methods for making|
|US4672962 *||7 Oct 1985||16 Jun 1987||Cordis Corporation||Plaque softening method|
|US4682596 *||22 May 1984||28 Jul 1987||Cordis Corporation||Electrosurgical catheter and method for vascular applications|
|US4748979 *||13 Apr 1987||7 Jun 1988||Cordis Corporation||Plaque resolving device|
|US4947842 *||13 Feb 1989||14 Aug 1990||Medical Engineering And Development Institute, Inc.||Method and apparatus for treating tissue with first and second modalities|
|US4955883 *||29 Aug 1988||11 Sep 1990||Diversatronics||Glaucoma needle with a thermal heat band|
|US4961422 *||2 May 1988||9 Oct 1990||Marchosky J Alexander||Method and apparatus for volumetric interstitial conductive hyperthermia|
|US4992045 *||28 Oct 1988||12 Feb 1991||Dentsply Research & Development Corp.||Battery powered condenser for root canals|
|US5043560 *||29 Sep 1989||27 Aug 1991||Masreliez C Johan||Temperature control of a heated probe|
|US5170788 *||24 Apr 1991||15 Dec 1992||Vickers Plc||Needle electrode and method of assembly thereof|
|US5197466 *||7 Jan 1992||30 Mar 1993||Med Institute Inc.||Method and apparatus for volumetric interstitial conductive hyperthermia|
|US5979453 *||6 Nov 1996||9 Nov 1999||Femrx, Inc.||Needle myolysis system for uterine fibriods|
|US6283935||30 Sep 1998||4 Sep 2001||Hearten Medical||Ultrasonic device for providing reversible tissue damage to heart muscle|
|US6312426||30 May 1997||6 Nov 2001||Sherwood Services Ag||Method and system for performing plate type radiofrequency ablation|
|US6719770||8 Jun 2001||13 Apr 2004||Tony R. Brown||Ultrasonic device for providing reversible tissue damage to heart muscle|
|US7351199||8 Aug 2003||1 Apr 2008||Smiths Group Plc||Catheters|
|US7384391 *||3 Dec 2004||10 Jun 2008||William A. Cook Australia Pty. Ltd.||Heated ovum pick up needle|
|US7989703||27 Feb 2009||2 Aug 2011||Fort Wayne Metals Research Products Corporation||Alternating core composite wire|
|US8600494||6 Sep 2011||3 Dec 2013||Ionix Medical Inc.||Method and device for treating abnormal tissue growth with electrical therapy|
|US8603097||15 Jan 2013||10 Dec 2013||Insight Surgical Instruments, Llc||Minimally invasive surgical applicator|
|US8801723||5 Nov 2013||12 Aug 2014||Insight Surgical Instruments, Llc||Minimally invasive surgical applicator|
|US20040039247 *||8 Aug 2003||26 Feb 2004||Nash John Edward||Catheters|
|US20050143619 *||3 Dec 2004||30 Jun 2005||William A. Cook Australia Pty. Ltd.||Heated ovum pick up needle|
|US20070163106 *||11 Jan 2007||19 Jul 2007||Excel-Tech Ltd.||Needle having multiple electrodes|
|US20100049031 *||19 Aug 2009||25 Feb 2010||Ionix Medical, Inc.||Non-Thermal Ablation System for Treating BPH and Other Growths|
|US20100049188 *||19 Aug 2009||25 Feb 2010||Ionix Medical, Inc.||Non-Thermal Ablation System for Treating Tissue|
|US20100049192 *||19 Aug 2009||25 Feb 2010||Ionix Medical, Inc.||Catheter for Treating Tissue with Non-Thermal Ablation|
|USRE33925 *||8 Dec 1988||12 May 1992||Cordis Corporation||Electrosurgical catheter aned method for vascular applications|
|EP0102538A1 *||5 Aug 1983||14 Mar 1984||Sterimed Gesellschaft für medizinischen Bedarf mbH||Device for puncture and catheterisation for human or animal bodies|
|EP1393690A2 *||5 Aug 2003||3 Mar 2004||Smiths Group plc||Catheters|
|WO1980002108A1 *||1 Apr 1980||16 Oct 1980||Biotronics Inc||Proctologic device for the therapeutic treatment of hemorrhoids|
|WO1993006784A1 *||1 Oct 1992||15 Apr 1993||Wisap Gmbh||Coagulation probe|
|WO2011117503A1 *||4 Mar 2011||29 Sep 2011||Nova Therma||Device for delivering calories into human or animal tissue, vessel, or cavity|
|WO2012151253A1 *||2 May 2012||8 Nov 2012||Insight Surgical Instruments Llc||Minimally invasive surgical applicator|
|U.S. Classification||606/29, 219/229, 219/233|
|International Classification||A61B18/08, A61B18/04|