|Publication number||US3351063 A|
|Publication date||Nov 7, 1967|
|Filing date||Dec 8, 1964|
|Priority date||Dec 8, 1964|
|Publication number||US 3351063 A, US 3351063A, US-A-3351063, US3351063 A, US3351063A|
|Inventors||Daunt John G, Malaker Stephen F|
|Original Assignee||Daunt John G, Malaker Stephen F|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (5), Referenced by (24), Classifications (6)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Nov. 7, 1967 s, F. MALAKERl-:TAL 3,351,063
v CRYOSUBGICAL PROBE A, I
Filed Deo. 8, 1964 "`\\\\\\\\\\usus|s|s||\\ amm?" I Y l H/ l2 La 2 2,8.
y y E y l 8 cRYoGENlc OUTPUT E 37) 36N 7 :aa/.
6 39/ E x4/'1A QN 35 33f\\ Ele. 4 l
` RS y STEPHEN FNVIKER BY JOHN G. DAUNT ATTORNEY.
3,351,063 y CRYOSURGICAL PROBE Stephen F. Malaker, 330 Short DriveMountainside, NJ.
07092, and John G. Daunt, 4725 Olentangy Blvd., Columbus, Ohio 43214 Filed Dec. 8, 1964, Ser. No. 416,781 2 Claims. (Cl. 12S-303.1)
This invention deals with a probe device operated at very low temperatures. More specifically, it relates to a probe having a surgical tip which may be 'cooled to very low temperatures, and heated instantly, if desired.
Recent lsurgery techniques are now Yincluding the use of a probe subjected to low temperatures for freezing and removing localized growths or tissues. For example, the Kelman Cryostylet, used for ophthalmic surgery, employs a thermoelectrically-cooled stylet', operating on'the theory that warm,.moist tissue, such-as a lens, will adhere firmly to a cold stylet. In 25, 1964, pp. 79-91, there are disclosed various bloodless, nontraumatic operations which may be effected by cryosurgery.
Unfortunately, the probesnow available-for KVsuch use are quite heavy and are not adapted for very low ternperatures which would bek needed for treatment of Meniers disease or Parkinsons disease, for example. Some techniques now even use the cumbersome and dangerous technique of employing liquid nitrogen from an open bottle.
According to the present invention, a cryosurgical probe has been developed which is light and easy to manipulate. Also, it is adapted to be cooled to very low temperatures, such as 40 C. to 50 C., or even 80 C. or 200 C. or even lower, which enables the use of necrosis to relieve Parkinsonian tremor, for example. An important feature of the present invention is the provision for instant heating at the cold tip of the probe, thus making it possible to quickly remove tissue from the tip.L
A further important feature of the present invention is the fact that the probe of the present invention may be readily combined with a cryogenic engine, such as one operating on a modified Stirling cycle, to produce a very light, compact, readily-operated system which is easily transported, quickly started, and is free of operating difiiculties.
The invention will be more readily understood by reference to the accompanying drawings in which a preferred embodiment is described, and in'whichrFIGURE 1 depicts a side view, partly cut away and in Kcross-section, of a cyrosurgical probe of the present invention. A front view thereof is illustrated in FIGURE 2, while'FIGURE 3 presents a cross-sectional front view taken along the plane of line 3 3 in FIGURE 1. FIGURE 4 shows a schervmatic drawing of a cryogenic engine of the modified Stirling cycle type, as adapted to feed cold liquid to the probe of FIGURES 1-3.-The same numerals refer to similar parts in the various figures.
Referring again to the drawing, numeral 5 denotes generally a probe of the present invention, as connected by liquid transfer lines 6 and 7 to a cryogenic output, designated generally and schematically as 8, which output is designed to be lcontrolled by electronic controls, referred to generally and schematically by numeral 9.
Probe 5 comprises a hollow body 10 made of insulated or insulating material which is mechanically stable at low temperatures and is resistant to disinfecting and cleaning materials, such as alcohol, chlorine, and the like. Such a body may be an evacuated glass body 10 having a hollow center 11, or it may be a body of tetrafluoroethylene or other fluoropolymer which withstands exceedingly low temperatures, or any other suitable material. Concen- MedicalWorld News, for Sept 3,351,063 Patented Nov. 7, 1967 Ythe otherwise closed end 16 of body 10. End 15 of Vtube 12 is desirably of high conductivity metal which is separated from body end 16 by a resilient gasket 17. Attached to end 15 of tube 12 (by screw threads or otherwise) is probe end 18, ma-de of copper or some other highlyconductive material. This probe end is preferably provided with a removable and interchangeable highly conductive contact tip 19wl1ich tipA is used to contactthe tissue to be frozen. Tip 19 is interchangeable withy other tips having different shapes or configurations, depending on the type of surgery to be' performed.
The open end 20 of tube 12 is provided with a conventional quick-disconnect coupling 21 which enables coupling or disconnection of tube end 20 with flexible ref frigerant supply tube or line 6. Near itsv closed end 15, tube 12 is provided `with one or more series of radial'holes 22 (FIG. 3).
The rear end of body 10 is provided with a connecting tubular side arm 23 which is also made of the same material as body 10, and within this side arm, in outside sealed relation, is inserted outlet tube 24 having exposed end 25, also provided with a conventional disconnect coupling 26, which latter serves to connect or `disconnect end 25 with flexible refrigerant discharge line or tube 7.
From the foregoing, it can be seen that as the cryogenic output 8 (controlled through electronic controls 9) forces refrigerant liquid through line 6, the refrigerantl enters tube 12 and discharges therefrom through the radial holes 22, while at the same time cooling -down tube end 15, probe end 18 and probe tip 19. In this heat exchange operation, much, if not all, of the liquid refrigerant (such as liquid nitrogen) is vaporzed. The thus-vaporized coolant leaving through holes 22 (as indicated by the arrows), passes through annular space 11 and discharges through arm tube 24 and out through discharge line 7, from which it is fed into the cryogenic output for recooling and condensation.
A supplemental feature shown in FIG. 1, isy an opening 27 in body 10 through which is inserted, into a well of tube end 15, a heating unit, such'as zener diode 28. Electrical leads 29 from this diode are connected to binding posts or other connection means 30 tovwhich an outside source of electricity may be fed through lines 31.
A conventional spring-loaded push button switch 32 may bemounted on body 10 to energize the diode to provide quick heating of probe tip 19 in emergencies, or when it is desired toremove quickly the adhered tip from the diode may be provided with a sensor to measure and control the heat, as
' gen) for the probe, is outlined schematicallyin FIG. 4.
`35 into dome 36,
A cryogenic engine 33, such as one operating in accordance with a modified Stirling cycle (c g., such as that described in U.S. Patent 3,074,244), has its cold head 34 enclosed in a vacuum-insulated compartment 35. Above this compartment is a dome 36 into which is fed the refrigerant discharged from line 7 leading out of probe 5. This line terminates with a one-way absolute pressure Valve 37 within dome 36, through whichvalve the refrigerant vapor is discharged into dome 36. Gas circulator pump 38, within dome 36, picks up and circulates the gaseous refrigerant through coil 3-9 in heat exchange contact with the cold head 34 of the engine, whereupon the liquefied refrigerant passes from the vacuum chamber through solenoid valve 40, and outthrough line 6 and into the probe 5. The system is rela a conductive probe tip designed to be cooled by the tively simple and is not space-consuming, when comtube end which, in turn, is cooled by a refrigerant, pared to other cryogenic systems in use at present. a Zener diode heating means mounted through the Wall We claim: of said body in outside sealing relation therewith 1. A cryosurgical probe, comprising: 5 and into the closed end of said tube immediately a tubular body made of insulating material, and havabove and adjacent to said tip and designed to proing closed ends, vide instantaneous heat to said probe end, and a tube open at one end and penetrating the rearward a switch on said body for energizing said heating means. end of said body in outside sealing relation and 2. A cryosurgical probe according to claim 1 in which passing ,through said body in spaced relation so as lo the heating means comprises a Zener diode and sensor. to leave an annular space therebetween, and having its other end closed within said body, said closed References Clted end being made of highly heat conductive material UNITED STATES PATENTS and penetrating the forward end of Ysaid body in out- 1,652,954 12/1927 Pierce 128 401 sld? Sealinsfelatlon, 15 2,938,130 5/1960 N011 307.885 a serles of radlal holes 1n said tube adjacent said closed 3,007,473 11/1961 Jackson et aL 128 400 end, 3,101,596 8/1963 Rinia et al. 62-6 a hollow arm made of insulating materlal connectmg 3,254,838 6/1966 Chambers 165 27X the rear wall of said body with the said annular space therein and in outside sealing relation, 20 OTHER REFERENCE-S connecting means for connecting a refrigerant feed line I. S. Cooper: Cryogenic Surgery of the Basal Ganglia,
to the open end of said Vtube for vfeeding a refrigerant August 1962, pp. '60G-604, I.A.M.A. 12S-303. therethrough, Journal of the American Geriatrics Society, vol. 9,
connecting means for connecting a discharge refrigerant August 1961 PP- 714-7313 relied P011- Iline to the end of said hollow arm for leading away a 25 refrigerant which had passed through said tube holes RICHARD A' GAUDET P'mw'y Exammer' and Said annular Space, ASSSILl' Examiner.
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|U.S. Classification||606/24, 219/227|
|International Classification||A61B18/02, A61B18/00|