Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3902494 A
Publication typeGrant
Publication dateSep 2, 1975
Filing dateApr 30, 1974
Priority dateMay 15, 1973
Also published asDE2324415B1, DE2324415C2
Publication numberUS 3902494 A, US 3902494A, US-A-3902494, US3902494 A, US3902494A
InventorsRoland Haberlen, Theodor Schwarz
Original AssigneeScheerer
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Suction surgical instrument
US 3902494 A
Abstract
A suction surgical instrument combining the functions of removing liquids and/or tissue from the operation area and of coagulating tissue. A suction shaft of an electrically insulating material and modifications of a coagulating electrode positioned at the suction port prevent traditional clogging of the suction shaft. Insulation and position of the electric lead aid in increasing the stiffness of the suction shaft.
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

nite States atent 1191 Haberlen et a1.

1451 Sept. 2, 1975 1 SUCTION SURGICAL INSTRUMENT [75] Inventors: Roland Haberlen, Tuttlingen;

Theodor Schwarz, Nendingen, Germany [73] Assignee'. Scheerer, Tuttlingen, Germany [22] Filed: Apr. 30, 1974 [21] Appl. No.: 465,583

[30] Foreign Application Priority Data May 15, 1973 Germany 2324415 52 US. Cl. 1213/2751; 128/303.l7; 174/47 51 111M31 ..A61M1/00;A61B17/4O 58 Field of Search 1212/2751, 303.1, 303.13, 1213/30314, 303.17, 303.18, 303.19, 276,

172.1, 407409, 417, DIG. 14; 174/47 [56] References Cited UNITED STATES PATENTS 2,275,167 3/1942 Bierman l28/303.17 2,808,833 10/1957 August l28/303.l7

2,814,296 11/1957 Everett 128/D1G. 4 2,888,928 6/1959 Seiger 128/303.17 3,324,225 6/1967 Thostrup 174/47 3,41 1,507 11/1968 Wingrove 128/407 3,680,544 8/1972 Shinnick 128/172.1 3,685,518 8/1972 Beuerle 6t 31.. 128/303.17

3,825,004 7/1974 Durden 128/275.1 3,828,780 8/1974 Morrison, Jr. 128/275.l

FOREIGN PATENTS OR APPLICATIONS 1,007,960 5/1957 Germany 128/303.l7 1,465,581 11/1965 France.... 128/303118 745,959 11/1932 France 128/409 Primary ExaminerRichard A. Gaudet Assistant ExaminerLee S. Cohen Attorney, Agent, or Firm-Eugene J. Kalil; James M. Rhodes, Jr.

[5 7] ABSTRACT A suction surgical instrument combining the functions of removing liquids and/or tissue from the operation area and of coagulating tissue. A suction shaft of an electrically insulating material and modifications of a coagulating electrode positioned at the suction port prevent traditional clogging of the suction shaft. Insulation and position of the electric lead aid in increasing the stiffness of the suction shaft.

7 Claims, 8 Drawing Figures SUCTION SURGICAL INSTRUMENT BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction surgical instrument for drawing off liquids and/or tissue particles from the operation area, in particular a suction device with a hollow suction shaft having at its free end a suction port and at its other end connection socket for attaching a suction tube.

2. Description of the Prior Art Conventional suction surgical instruments employ tubular suction shafts of metal, preferably of stainless steel or of a nickel-plated or chromiumplated brass. Frequently. the electrical conductivity of the prior art suction shafts serves to connect the suction shaft to a source of high frequency current for the purpose of coagulating the tissue, preferably, the blood vessels in the area of surgery. However, this has the disadvantage that tissue is coagulated not only at the desired spot in the operation area, but that the tissue particles sucked up by the suction shaft coagulate within said shaft, thereby causing the suction shaft to become clogged very quickly.

It is the purpose of the present invention to obviate the aforementioned difficulties by providing a suction surgical instrument with a suction shaft which will not become clogged by the coagulation of tissue particles when the suction device is employed as a coagulating instrument.

SUMMARY The preferred embodiment of the present invention solves this problem inherent in suction surgical instruments of the type referred to in the beginning, by a suction shaft of an electrically insulating material with its suction port provided with a coagulating electrode, said electrode attached to an electric lead that can be connected to a source of high frequency current. This prevents coagulation from ocurring within the hollow portion of the suction shaft, so that the suction shaft cannot become clogged thereby. Should over-heating of the coagulating electrode cause clotted material to settle thereon during the coagulating process, then this material can be removed easily, since the coagulating electrode is located outside the suction shaft. By shaping the electrode correspondingly, it is possible in addition to avoid with certainty clogging of the suction port by the tissue coagulated at the tip of the coagulating electrode. Furthermore. the coagulating electrode located outside of the suction shaft can readily be cleaned at any time, for example, by the operating nurse also during a surgical procedure, e.g., by the use of a correspondingly formed instrument.

The electric lead can be attached to the electrode in any arbitrary manner, c.g., as a trailing, preferably insulated. wire joined to the electrode.

The electric lead of one preferred embodiment of the invention runs in a longitudinal direction to the suction shaft and is preferably insulated. Thereby for one preferred embodiment of the invention, it is possible for the electric lead to have a profile increasing its bending resistance. and to be preferably connected mechanically to the suction shaft, so that the electric lead contributes to increasing the stiffness of the suction shaft, thereby forming a metallic reinforcement for the suction shaft.

In order to insulate the electric lead positioned on the outside adjacent to the suction shaft, an insulating tube may be used to enclose the suction shaft and the electric lead. Thereby, a mechanical connection is established at the same time between the suction shaft and the electric lead.

A further preferred embodiment of the invention has the suction port of the suction shaft constricted by the coagulating electrode. Such constriction may take various forms, e.g., the internal diameter of a ring-shaped electrode is smaller than the internal diameter of the suction shaft, or in the case of a differently shaped electrode, the latter extends a bit beyond the suction port, thereby reducing the diameter of the suction port. Constricting the suction port of a suction shaft in this way, causes only such tissue particles to be drawn off by the shaft, which are smaller than the internal diameter of the suction shaft, so that unobjectionable removal of these particles through the shaft is ensured, and clogging of the suction shaft by particles drawn in that are too large. is avoided with certainty. This procedure to prevent clogging of a suction shaft can also be employed to advantage with conventional surgical suction devices having the entire suction shaft of metal.

The suction shaft of the suction device of the present invention may be any arbitrary material that is electrically insulating. One preferred embodiment employs polytetrafluoroethylene as the electrically insulating material. Tetrafluoroethylene has the advantage that practically no particles adhere to it, so that the problem basic to the invention, namely to prevent clogging of the suction shaft by the tissue particles drawn into it, is solved especially well.

DESCRIPTION OF THE DRAWINGS The description refers to the accompanying drawings, in which like reference characters refer to like parts throughout the several views illustrating examples of the suction surgical instruments of the present invention, and in which:

FIG. I is a partial cross section and partial elevation of a first embodiment;

FIG. 2 is an end-on view of the suction port of the suction surgical instrument of FIG. 1;

FIG. 3 is a cross section along the line III III of FIG. 1;

FIG. 4 is a perspective view of the coagulating electrode of the embodiment shown in FIGS. 1 3;

FIGS. 5 and 6 are illustrations corresponding to FIG. 4 showing two different variations of the coagulating electrode;

FIG. 7 is a view of the suction port ofa suction instrument with a coagulating electrode as illustrated in FIG.

FIG. 8 is a cross section of the suction instrument shown in FIGS. 6 and 7.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring now to the drawings, the invention is described with reference to a surgical instrument for drawing off liquids and/or tissue particles from a surgical operating area, as represented in FIGS. I 4, comprising a suction shaft 10 of tetrafluoroethylene, provided at its free end with suction port II and connected at its other end to handle 12 forming a connection socket I3 to attach a suction tube not illustrated in the drawing, which tube serves to join in conventional fashion suction shaft with a vacuum source, also not illustrated. Handle 12 is provided at its end opposite connection socket 13 with a bore 14 forming a seat for the end of suction shaft 10 opposite suction port 11. Bore 14 extends into a channel 15 connecting the hollow passage of the suction shaft 10 with the hollow passage of connection socket 13. A ventilating opening 16 terminates in channel 15, which opening may be closed with the thumb of the hand holding handle 12, when drawing off liquids and/0r tissue particles from the operation area. Handle 12 consists of a comparatively stiff insulating material, preferably a plastic.

Electric lead 17 butts against suction shaft 10, which lead extends longitudinally the entire length of suction shaft 10 and along a portion of handle 12. This electric lead is a round rod provided in the region in which it butts against suction shaft 10 and handle 12, with a milled groove 18, which is shaped corresponding to the circumference of suction shaft 10 and of handle 12, for the purpose of fitting it thereto.

The remaining part 19 of the rod-shaped electric lead 17 extends away from handle 12 at an angle and is shaped as a plug 24 for the purpose of joining electric lead 17 with a source of high frequency current.

The end of electric lead 17 near suction port 11 is connected, i.e., welded, to a ring-shaped coagulating electrode 21 encompassing suction port 11. As is apparent from FIG. 2, the internal opening of the coagulating electrode 21, which at the same time forms the actual suction port 11, has a somewhat smaller diameter than the internal opening of suction shaft 10. Coagulating electrode 21 consists of a material which is thermally and electrically more conductive than stainless chromium alloy steel, e g., of silver or of an alloy of silver-gold, silver-copper, silver-paladium, silvercadmium, silver-cadmiumoxide, silver-nickel, c0pper beryllium, or something similar, and for the purpose of increasing its heating capacity, it extends a bit along suction shaft 10 as part 22.

For the purpose of insulating electric lead 17 on the outside, which lead extends lengthwise of suction shaft 10, insulating tube 23 is provided, encompassing suction shaft 10 and electric lead 17 and holding the two together mechanically. The portion of electric lead 17 extending partly the length of handle 12 and away from the latter, is provided with additional insulation, so that not insulated is only part 19 of electric lead 17 opposite handle 12 forming connecting plug 24.

The sickle-shaped profile of electric lead 17 of the part butting against suction shaft 10, provides the electric lead with comparative stiffness. Because electric lead 17 and suction shaft 10 are firmly held together mechanically by insulating tube 23, the comparatively soft suction shaft 10 receives the stiffness necessary for its use. Since the internal opening of the circular coagulating electrode 21 is smaller than the internal opening of suction shaft 10, only such tissue particles can get into suction shaft 10 having outer dimensions smaller than the diameter of the suction shaft, so that these tissue particles can easily be drawn off through suction shaft 10 without leading to clogging, which is additionally aided by the property of the polytetrafluoroethylene forming suction shaft 10, to which tissue particles cannot adhere.

Since the coagulating electrode 21 Consists of a material which is thermally and electrically very conductive,

the heat formed during coagulation is quickly dissipated and heating of the coagulating electrode by the coagulating current is avoided, so that said electrode is not overheated and thus tissue particles do not stick to the coagulating electrode, which is aided by the piece 22 increasing the heating capacity of the coagulating electrode 21. Should coagulated tissue nevertheless adhere to the opening of the coagulating electrode 21 and clog said opening, then it can very easily be freed from the outside even during the surgical procedure.

The embodiment of the invention illustrated in FIG. 5 comprises a coagulating electrode 121 which encompass suction port 111 only partly, which may be of advantage for certain types of applications. But even here the coagulating electrode 121 extends beyond suction port 111 to constrict the internal opening of suction shaft 10, in order to prevent tissue particles that might lead to a clogged shaft from becoming sucked in.

The embodiment of the invention illustrated in FIGS. 6 8 shows the coagulating electrode 221 formed merely by a flap extending into suction port 211. For this embodiment, electric lead 217 as well as the extending electrode part 222 welded to the end of electric lead 217, are groove shaped, so that they butt against suction shaft 10 at its inner side, and as a result of the groove-shaped curvature provide a profile of increased stiffness.

One embodiment not illustrated in the drawings has the electric lead shaped as a tube encompassing suction shaft 10, which also achieves the desired increase in stiffness of suction shaft 10. For this embodiment, it is not necessary to provide an insulating tube encompassing the tubular electric lead for the purpose of insulation. It suffices, if the outer surface of the tubular electric lead is provided with an insulating layer.

However, it is also possible to provide the electric lead with any other arbitrary profile, which ensures that the lead has the necessary bending resistance to increase the stiffness of suction shaft 10 to correspond to the respective requirements.

The necessary stiffness of the suction shaft, however, can also be achieved by a corresponding selection of the material, or by shaping of the same, e.g., by molded longitudinal ribs, or something similar, so that one can dispense with the effect of increasing the stiffness achieved through the electric lead and can attach the latter loosely to the coagulating electrode, for example, as an insulated wire.

Although our invention has been illustrated and described with reference to the preferred embodiment thereof, we wish to have it understood that it is in no way limited to the details of such embodiments, but is capable of numerous modifications within the scope of the appended claims.

Having thus fully disclosed our invention, what we claim is:

1. A surgical instrument comprising:

a tubelike suction shaft comprising an electrical insulating material forming a wall which surrounds a suction channel, said suction shaft having at its first end a connection socket for attachment to a source of suction for removing liquids and/or tissue from a surgical operation area, the second shaft end being opened to form a suction port the size of which is co-extensive with the internal opening of said second shaft end, electrode means positioned out of said channel and connected to said shaft wall and extending from the outside across a portion of said suction port and constricting said suction port. and an insulated electric lead for supplying high frequency current operably connected with said electrode means, said electric lead being positioned out of said channel and disposed lengthwise of and connected to said shaft wall.

2. An instrument according to claim 1, wherein said electric lead is formed with means for increasing its bending resistance.

3. A surgical instrument according to claim 1, wherein the insulation for said electric lead is provided by an insulating tube enclosing both said electric lead and suction shaft.

4. A surgical instrument as defined in claim 1, wherein said electric lead comprises a round bar proincrease the heating capacity of said electrode.

ll k I" UNIIEI) sTATEs IA'IEN'I OFFICE CERTIFICATE OF CORRECTION Patent No. 3,902,494 Dated September 2, 1975 Inventor) Roland Haberlen & Theodor Schwarz It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

Change the Assignee from "Scheerer, Tuttlingen, Germany" to --AESCULAPWERKE AG. vormals Jetter & Scheerer,

7200 Tuttlingen, Baden-Wurttemberg, Bundesrepublik Deutschland Change inventor s name "Roland Haberlen" to ---Roland Haberlen Signed and Scaled this tenth Day of February 1976 [SEAL] Attest.

RUTH C. MASON C. MARSHALL DANN Arresting Officer Commissioner ufPalents and Trademarks UNITED STATES PA'IENI OFFICE CERTIFKCATE OF CORRECTION Patent No. 3,902,494 Dated September 2, 1975 Inventor) Roland Haberlen & Theodor Schwarz It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

Change the Assignee from "Scheerer, Tuttlingen, Germany" to -AESCULAPWERKE AG. vormals Jetter & Scheerer,

7200 Tuttlingen, Baden-Wurttemberg, Bundesrepublik Deutschland-- Change inventor s name "Roland 'Haberlen" to -Roland H'aberlen- Signed and Scaled this tenth Day of February 1976 [SEAL] Arrest:

RUTH C. MASON C. MARSHALL DANN Arresting Officer Commissioner uj'latents and Trademarks

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2275167 *Apr 26, 1939Mar 3, 1942Bierman WilliamElectrosurgical instrument
US2808833 *Dec 6, 1952Oct 8, 1957Birtcher CorpGas blanketed clotting instrument
US2814296 *Apr 11, 1955Nov 26, 1957S & R J Everett & Company LtdSurgical needles
US2888928 *Apr 15, 1957Jun 2, 1959Wright Seiger HarryCoagulating surgical instrument
US3324225 *Mar 15, 1966Jun 6, 1967Elek Ska SvetsningsaktiebolageComposite hose unit for supplying a welding gun with a welding wire or wires, shieldig gas, welding current and compressed gas
US3411507 *Apr 1, 1964Nov 19, 1968Medtronic IncMethod of gastrointestinal stimulation with electrical pulses
US3680544 *Sep 9, 1970Aug 1, 1972James P ShinnickTransthoracic cannula-type device for cardiopulmonary resuscitation
US3685518 *Jul 29, 1970Aug 22, 1972Aesculap Werke AgSurgical instrument for high-frequency surgery
US3825004 *Mar 19, 1973Jul 23, 1974Durden Enterprises LtdDisposable electrosurgical cautery
US3828780 *Mar 26, 1973Aug 13, 1974Valleylab IncCombined electrocoagulator-suction instrument
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4074718 *Mar 17, 1976Feb 21, 1978Valleylab, Inc.Electrosurgical instrument
US4202336 *Jan 3, 1978May 13, 1980Erbe Elektromedizin KgCauterizing probes for cryosurgery
US4347842 *Feb 15, 1980Sep 7, 1982Mark BealeDisposable electrical surgical suction tube and instrument
US4492231 *Sep 17, 1982Jan 8, 1985Auth David CNon-sticking electrocautery system and forceps
US4532924 *Apr 30, 1982Aug 6, 1985American Hospital Supply CorporationFor use in the treatment of tissue
US4568332 *Nov 8, 1983Feb 4, 1986Shippert Ronald DMedical instrument for suction lipectomy
US4919129 *Nov 30, 1987Apr 24, 1990Celebration Medical Products, Inc.Extendable electrocautery surgery apparatus and method
US5052999 *Jan 29, 1990Oct 1, 1991Klein Jeffrey ALiposuction method and apparatus
US5133714 *May 6, 1991Jul 28, 1992Kirwan Surgical Products, Inc.Electrosurgical suction coagulator
US5192267 *Mar 28, 1991Mar 9, 1993Nadiv ShapiraVortex smoke remover for electrosurgical devices
US5234428 *Jun 11, 1991Aug 10, 1993Kaufman David IDisposable electrocautery/cutting instrument with integral continuous smoke evacuation
US5256138 *Oct 4, 1990Oct 26, 1993The Birtcher CorporationElectrosurgical handpiece incorporating blade and conductive gas functionality
US5314406 *Oct 9, 1992May 24, 1994Symbiosis CorporationEndoscopic electrosurgical suction-irrigation instrument
US5376089 *Aug 2, 1993Dec 27, 1994Conmed CorporationElectrosurgical instrument
US5441503 *Jan 14, 1994Aug 15, 1995Considine; JohnApparatus for removing tumors from hollow organs of the body
US5449356 *Oct 18, 1991Sep 12, 1995Birtcher Medical Systems, Inc.Multifunctional probe for minimally invasive surgery
US5451222 *Mar 16, 1994Sep 19, 1995Desentech, Inc.Smoke evacuation system
US5460602 *Mar 8, 1993Oct 24, 1995Shapira; NadivSmoke evacuator for smoke generating devices
US5520685 *Aug 4, 1994May 28, 1996Alto Development CorporationThermally-insulated anti-clog tip for electrocautery suction tubes
US5693052 *Sep 1, 1995Dec 2, 1997Megadyne Medical Products, Inc.Comprising thermoconductive inorganic chromium coatings for transferring radio frequency energy; nonsticking at high current density
US5718709 *Jun 6, 1995Feb 17, 1998Considine; JohnApparatus for removing tumours from hollow organs of the body
US5730742 *Jan 11, 1996Mar 24, 1998Alto Development CorporationInclined, flared, thermally-insulated, anti-clog tip for electrocautery suction tubes
US5843080 *Oct 16, 1996Dec 1, 1998Megadyne Medical Products, Inc.Bipolar instrument with multi-coated electrodes
US5944715 *Nov 25, 1996Aug 31, 1999Gyrus Medical LimitedElectrosurgical instrument
US5951548 *Feb 21, 1997Sep 14, 1999Stephen R. DeSistoSelf-evacuating electrocautery device
US6004319 *Jun 20, 1996Dec 21, 1999Gyrus Medical LimitedElectrosurgical instrument
US6013076 *Oct 25, 1996Jan 11, 2000Gyrus Medical LimitedElectrosurgical instrument
US6015406 *Aug 21, 1996Jan 18, 2000Gyrus Medical LimitedElectrosurgical instrument
US6027501 *Jun 20, 1998Feb 22, 2000Gyrus Medical LimitedElectrosurgical instrument
US6056746 *Mar 27, 1998May 2, 2000Gyrus Medical LimitedElectrosurgical instrument
US6090106 *Mar 26, 1998Jul 18, 2000Gyrus Medical LimitedElectrosurgical instrument
US6093186 *Dec 18, 1997Jul 25, 2000Gyrus Medical LimitedElectrosurgical generator and system
US6102885 *Aug 7, 1997Aug 15, 2000Bass; Lawrence S.Device for suction-assisted lipectomy and method of using same
US6146353 *Sep 22, 1998Nov 14, 2000Sherwood Services AgSmoke extraction device
US6149646 *Feb 2, 1999Nov 21, 2000Linvatec CorporationMonopolar tissue ablator
US6174308May 26, 1999Jan 16, 2001Gyrus Medical LimitedElectrosurgical instrument
US6210405Jun 17, 1997Apr 3, 2001Gyrus Medical LimitedUnder water treatment
US6234178May 27, 1999May 22, 2001Gyrus Medical LimitedElectrosurgical instrument
US6261286Oct 16, 1998Jul 17, 2001Gyrus Medical LimitedElectrosurgical generator and system
US6277114Mar 18, 1999Aug 21, 2001Gyrus Medical LimitedElectrode assembly for an electrosurical instrument
US6280415 *Mar 10, 1999Aug 28, 2001W. Dudley JohnsonTissue traction device
US6293942May 2, 1996Sep 25, 2001Gyrus Medical LimitedElectrosurgical generator method
US6306134Oct 16, 1998Oct 23, 2001Gyrus Medical LimitedElectrosurgical generator and system
US6312426May 30, 1997Nov 6, 2001Sherwood Services AgMethod and system for performing plate type radiofrequency ablation
US6358273Apr 9, 1999Mar 19, 2002Oratec Inventions, Inc.Soft tissue heating apparatus with independent, cooperative heating sources
US6364877Oct 16, 1998Apr 2, 2002Gyrus Medical LimitedElectrosurgical generator and system
US6379350Oct 5, 1999Apr 30, 2002Oratec Interventions, Inc.Surgical instrument for ablation and aspiration
US6391028May 16, 2000May 21, 2002Oratec Interventions, Inc.Probe with distally orientated concave curve for arthroscopic surgery
US6416509Mar 26, 1998Jul 9, 2002Gyrus Medical LimitedElectrosurgical generator and system
US6428503Jan 18, 2000Aug 6, 2002Atc Technologies, Inc.Surgical instrument for providing suction and irrigation
US6461357Jun 25, 1999Oct 8, 2002Oratec Interventions, Inc.Electrode for electrosurgical ablation of tissue
US6482202Jan 10, 2001Nov 19, 2002Gyrus Medical LimitedUnder water treatment
US6544248 *Oct 8, 1999Apr 8, 2003Starion Instruments CorporationDevice for suction-assisted lipectomy and method of using same
US6544260Dec 31, 1999Apr 8, 2003Oratec Interventions, Inc.Method for treating tissue in arthroscopic environment using precooling and apparatus for same
US6565561Apr 3, 2000May 20, 2003Cyrus Medical LimitedElectrosurgical instrument
US6645203Jan 2, 2001Nov 11, 2003Oratec Interventions, Inc.Surgical instrument with off-axis electrode
US6695839Feb 8, 2001Feb 24, 2004Oratec Interventions, Inc.Method and apparatus for treatment of disrupted articular cartilage
US6747218Sep 20, 2002Jun 8, 2004Sherwood Services AgElectrosurgical haptic switch including snap dome and printed circuit stepped contact array
US6780180Mar 8, 2000Aug 24, 2004Gyrus Medical LimitedElectrosurgical instrument
US6918903 *Apr 8, 2003Jul 19, 2005Starion Instrument CorporationDevice for suction-assisted lipectomy and method of using same
US6939346Jun 28, 2002Sep 6, 2005Oratec Interventions, Inc.Method and apparatus for controlling a temperature-controlled probe
US6986768Feb 4, 2003Jan 17, 2006Sherwood Services AgElectrosurgical electrode shroud
US6997941Mar 17, 2003Feb 14, 2006Oratec Interventions, Inc.Method and apparatus for treating annular fissures in intervertebral discs
US7060064Jun 24, 2005Jun 13, 2006Sherwood Services AgElectrosurgical electrode shroud
US7156842Oct 6, 2004Jan 2, 2007Sherwood Services AgElectrosurgical pencil with improved controls
US7156844Nov 20, 2003Jan 2, 2007Sherwood Services AgElectrosurgical pencil with improved controls
US7226447Jun 23, 2004Jun 5, 2007Smith & Nephew, Inc.Electrosurgical generator
US7235072Feb 17, 2004Jun 26, 2007Sherwood Services AgMotion detector for controlling electrosurgical output
US7241294Nov 19, 2003Jul 10, 2007Sherwood Services AgPistol grip electrosurgical pencil with manual aspirator/irrigator and methods of using the same
US7244257Nov 5, 2003Jul 17, 2007Sherwood Services AgElectrosurgical pencil having a single button variable control
US7267683Nov 14, 2003Sep 11, 2007Oratec Interventions, Inc.Method for treating intervertebral discs
US7282061Nov 14, 2003Oct 16, 2007Oratec Interventions, Inc.Method of treating intervertebral disc
US7393354Jul 23, 2003Jul 1, 2008Sherwood Services AgElectrosurgical pencil with drag sensing capability
US7400930Nov 14, 2003Jul 15, 2008Oratec Interventions, Inc.Method for treating intervertebral discs
US7462176Jul 18, 2005Dec 9, 2008Starion Instruments CorporationDevice for suction-assisted lipectomy and method of using same
US7500974Jun 28, 2005Mar 10, 2009Covidien AgElectrode with rotatably deployable sheath
US7503917Aug 5, 2005Mar 17, 2009Covidien AgElectrosurgical pencil with improved controls
US7582244Apr 18, 2006Sep 1, 2009Covidien AgElectrosurgical electrode shroud
US7621909Jun 12, 2008Nov 24, 2009Covidien AgElectrosurgical pencil with drag sensing capability
US7647123Oct 31, 2007Jan 12, 2010Oratec Interventions, Inc.Method for treating intervertebral discs
US7655003Jun 22, 2005Feb 2, 2010Smith & Nephew, Inc.Electrosurgical power control
US7766844Apr 21, 2004Aug 3, 2010Smith & Nephew, Inc.Surgical instrument aspiration valve
US7828794Aug 25, 2005Nov 9, 2010Covidien AgHandheld electrosurgical apparatus for controlling operating room equipment
US7879033Jan 24, 2006Feb 1, 2011Covidien AgElectrosurgical pencil with advanced ES controls
US7935109Aug 17, 2006May 3, 2011Ioan CosmescuMultifunctional telescopic monopolar/bipolar surgical device and method thereof
US7955327Jan 8, 2007Jun 7, 2011Covidien AgMotion detector for controlling electrosurgical output
US7959633Dec 18, 2006Jun 14, 2011Covidien AgElectrosurgical pencil with improved controls
US8016824Oct 21, 2009Sep 13, 2011Covidien AgElectrosurgical pencil with drag sensing capability
US8052675Jan 21, 2010Nov 8, 2011Smith & Nephew, Inc.Electrosurgical power control
US8100902Jan 30, 2009Jan 24, 2012Covidien AgElectrode with rotatably deployable sheath
US8128622Jul 9, 2007Mar 6, 2012Covidien AgElectrosurgical pencil having a single button variable control
US8162937Jun 27, 2008Apr 24, 2012Tyco Healthcare Group LpHigh volume fluid seal for electrosurgical handpiece
US8187312Oct 15, 2007May 29, 2012Neurotherm, Inc.Method for treating intervertebral disc
US8226697Oct 15, 2007Jul 24, 2012Neurotherm, Inc.Method for treating intervertebral disc
US8231620Feb 10, 2009Jul 31, 2012Tyco Healthcare Group LpExtension cutting blade
US8235987Nov 21, 2008Aug 7, 2012Tyco Healthcare Group LpThermal penetration and arc length controllable electrosurgical pencil
US8348934Sep 23, 2011Jan 8, 2013Smith & Nephew, Inc.Electrosurgical power control
US8449540Feb 10, 2009May 28, 2013Covidien AgElectrosurgical pencil with improved controls
US8460289Jan 23, 2012Jun 11, 2013Covidien AgElectrode with rotatably deployable sheath
US8506565Aug 23, 2007Aug 13, 2013Covidien LpElectrosurgical device with LED adapter
US8591509Jun 23, 2008Nov 26, 2013Covidien LpElectrosurgical pencil including improved controls
US8597292Feb 27, 2009Dec 3, 2013Covidien LpElectrosurgical pencil including improved controls
US8603082Dec 5, 2012Dec 10, 2013Smith & Nephew, Inc.Electrosurgical power control
US8608666Jul 30, 2010Dec 17, 2013Smith & Nephew, Inc.Surgical instrument aspiration valve
US8632536Jun 23, 2008Jan 21, 2014Covidien LpElectrosurgical pencil including improved controls
US8636733Feb 26, 2009Jan 28, 2014Covidien LpElectrosurgical pencil including improved controls
US8663218Jun 23, 2008Mar 4, 2014Covidien LpElectrosurgical pencil including improved controls
US8663219Jun 23, 2008Mar 4, 2014Covidien LpElectrosurgical pencil including improved controls
US8668688Jul 17, 2012Mar 11, 2014Covidien AgSoft tissue RF transection and resection device
WO1981003271A1 *Oct 28, 1980Nov 26, 1981American Hospital Supply CorpA multipolar electrosurgical device
WO1981003272A1 *May 4, 1981Nov 26, 1981American Hospital Supply CorpA multipolar electrosurgical device
WO1994020031A1 *Mar 8, 1993Sep 15, 1994Nadiv ShapiraVortex smoke remover for smoke generating devices
WO2000053249A1 *Mar 10, 2000Sep 14, 2000W Dudley JohnsonTissue traction device
Classifications
U.S. Classification604/20, 174/47, 606/49, 604/902
International ClassificationA61B18/12, A61B10/02, A61B18/14, A61M1/00
Cooperative ClassificationA61B18/14, Y10S604/902, A61B18/1402
European ClassificationA61B18/14, A61B18/14B