US3902494A - Suction surgical instrument - Google Patents

Suction surgical instrument Download PDF

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Publication number
US3902494A
US3902494A US465583A US46558374A US3902494A US 3902494 A US3902494 A US 3902494A US 465583 A US465583 A US 465583A US 46558374 A US46558374 A US 46558374A US 3902494 A US3902494 A US 3902494A
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United States
Prior art keywords
suction
shaft
electric lead
suction shaft
surgical instrument
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Expired - Lifetime
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US465583A
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English (en)
Inventor
Roland Haberlen
Theodor Schwarz
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SCHEERER
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SCHEERER
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1402—Probes for open surgery
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S604/00—Surgery
    • Y10S604/902—Suction wands

Definitions

  • 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.
  • 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.
  • suction surgical instruments employ tubular suction shafts of metal, preferably of stainless steel or of a nickel-plated or chromiumplated brass.
  • 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.
  • 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.
  • 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.
  • 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.
  • the electrode 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.
  • the electric lead 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.
  • 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.
  • 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.
  • FIGS. I 4 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.
  • suction port 11 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.
  • a ring-shaped coagulating electrode 21 encompassing suction port 11.
  • 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.
  • 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.
  • 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.
  • 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.
  • FIGS. 6 8 shows the coagulating electrode 221 formed merely by a flap extending into suction port 211.
  • 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.
  • the electric lead shaped as a tube encompassing suction shaft 10, which also achieves the desired increase in stiffness of suction shaft 10.
  • the necessary stiffness of the suction shaft 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.
  • 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.
  • a surgical instrument wherein the insulation for said electric lead is provided by an insulating tube enclosing both said electric lead and suction shaft.

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Plasma & Fusion (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Otolaryngology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
  • External Artificial Organs (AREA)
US465583A 1973-05-15 1974-04-30 Suction surgical instrument Expired - Lifetime US3902494A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2324415A DE2324415C2 (de) 1973-05-15 1973-05-15 Chirurgisches Sauginstrument

Publications (1)

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US3902494A true US3902494A (en) 1975-09-02

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US465583A Expired - Lifetime US3902494A (en) 1973-05-15 1974-04-30 Suction surgical instrument

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US (1) US3902494A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS533596B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2324415C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1449081A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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US4347842A (en) * 1980-02-15 1982-09-07 Mark Beale Disposable electrical surgical suction tube and instrument
US4492231A (en) * 1982-09-17 1985-01-08 Auth David C Non-sticking electrocautery system and forceps
USD282403S (en) 1983-08-04 1986-01-28 Aspen Laboratories, Inc. Suction coagulator
US4568332A (en) * 1983-11-08 1986-02-04 Shippert Ronald D Medical instrument for suction lipectomy
USD285004S (en) 1983-08-01 1986-08-05 Shippert Ronald D Surgical suction instrument
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US5133714A (en) * 1991-05-06 1992-07-28 Kirwan Surgical Products, Inc. Electrosurgical suction coagulator
USD330253S (en) 1990-10-04 1992-10-13 Birtcher Medical Systems, Inc. Electrosurgical handpiece
US5192267A (en) * 1989-01-23 1993-03-09 Nadiv Shapira Vortex smoke remover for electrosurgical devices
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Families Citing this family (10)

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JPS5724342Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-11-20 1982-05-26
JPS5330786U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1976-08-23 1978-03-16
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US8388617B2 (en) * 2008-10-01 2013-03-05 Cook Medical Technologies Llc Barrel system for use with an endoscope
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GB1449081A (en) 1976-09-08
JPS533596B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1978-02-08
JPS5042687A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1975-04-17
DE2324415C2 (de) 1975-06-05
DE2324415B1 (de) 1974-10-24

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