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WO1996006573A1 - Dispositif d'electro-succion retractable - Google Patents

Dispositif d'electro-succion retractable Download PDF

Info

Publication number
WO1996006573A1
WO1996006573A1 PCT/US1994/009572 US9409572W WO9606573A1 WO 1996006573 A1 WO1996006573 A1 WO 1996006573A1 US 9409572 W US9409572 W US 9409572W WO 9606573 A1 WO9606573 A1 WO 9606573A1
Authority
WO
WIPO (PCT)
Prior art keywords
tubular member
cautery element
electrocautery device
cautery
tissue
Prior art date
Application number
PCT/US1994/009572
Other languages
English (en)
Inventor
Heshmat Majlessi
Original Assignee
Arthur D. Little Enterprises, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US07/999,693 priority Critical patent/US5360427A/en
Priority claimed from US07/999,693 external-priority patent/US5360427A/en
Application filed by Arthur D. Little Enterprises, Inc. filed Critical Arthur D. Little Enterprises, Inc.
Priority to PCT/US1994/009572 priority patent/WO1996006573A1/fr
Publication of WO1996006573A1 publication Critical patent/WO1996006573A1/fr

Links

Classifications

    • 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
    • A61B18/1482—Probes or electrodes therefor having a long rigid shaft for accessing the inner body transcutaneously in minimal invasive surgery, e.g. laparoscopy
    • 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
    • A61B2018/0091—Handpieces of the surgical instrument or device
    • A61B2018/00916—Handpieces of the surgical instrument or device with means for switching or controlling the main function of the instrument or device
    • A61B2018/00922—Handpieces of the surgical instrument or device with means for switching or controlling the main function of the instrument or device by switching or controlling the treatment energy directly within the hand-piece

Definitions

  • This invention generally relates to medical devices and, more specifically, an electrocautery device used in operative procedures.
  • the first is an electrocautery which is used to cauterize or sear tissue by burning in a surgical field.
  • the second device is a suction tube which is used to suction blood away from the surgical field so that the bleeding can be cauterized.
  • Both the electrocautery as well as the suction tubes are typically introduced into the abdominal cavity through trocars, well known to those skilled in the art, which are sharp-pointed surgical instruments used with a cannula to puncture a body cavity.
  • a prior art device which combines a suction tube and a cautery.
  • the problem with this device is that the cautery tip protrudes beyond the suction tube and remains in such extending position at all times while the remote free end of the device is in the abdominal cavity.
  • Another known device includes a sliding mechanism which permits a surgeon to manually slide the cautery tip to an extended, active position but the cautery tip must be manually retracted. Therefore, if the surgeon forgets to retract cautery tip, this device exhibits the same disadvantages as the first mentioned fixed device.
  • the present invention is intended to eliminate the disadvantages inherent in prior art devices used for laparascopic surgery.
  • an electrocautery device for attachment to a suction pump and an source of electric current comprises a tubular number having two free ends.
  • the device is connectable to the suction pump at one free end while having the other free end dimensioned and configurated to be inserted into the cavity of a human torso into proximity with bleeding vessels or tissue to suction blood in the region of the bleeding vessels or tissue, thereby improving the visibility of the bleeding vessels or tissue requiring cauterization.
  • a cautery element is provided at the other free end which is connectable to the source of electric current for cauterizing the bleeding vessels or tissue.
  • the cautery element is movable between a retracted position within said tubular member. In this manner, the bleeding vessels or tissue are not exposed to said cautery element.
  • cautery element In an extended position of the cautery element, it is used for cauterization.
  • An actuatable means is provided for selectively moving said cautery element from said retracted to said extended positions. In this manner, cauterization can be selectively performed once that cautery element is connected to the source of current upon actuation of said actuatable means to move said cautery element to said extended position.
  • Fig. 1 is a longitudinal cross-sectional view of a retractable electro-suction device in accordance with the present invention, shown in a condition for suctioning blood but not cauterization;
  • Fig. 2 is similar to Fig. 1, but showing the device manually actuated to enable the device to simultaneously cauterize and suction;
  • Fig. 3 is a cross-sectional view of the electro-suction device shown in Fig. 3, taken along line 4-4.
  • the electro-suction device 10 in accordance with the present invention includes a tubular member 12 the proximate free end of 14 of which is connected to a suction pump (not shown) .
  • the remote or distal free end 16 supports a retractable cautery element or electrode 18 which can be selectively retracted or extended.
  • the tubular member 12 is, referring to Fig. 3, preferably provided with a partition wall 12a which extends in the longitudinal direction at least along the distal or remote free end 16 of the tubular member 12.
  • the partition wall 12a forms an elongate channel 12b and a suction channel 12c.
  • the retractable cautery tip or element is slidably mounted for movements within the elongate channel 12b.
  • An actuatable member 24 is provided which includes a manually operable button 26 which is coupled to and cooperates with an elongate link 28 which extends between the button 26 and the retractable cautery element 18.
  • the cautery element 18 is movable between a retracted position within the elongate channel 12b and, therefore, the tubular member 12.
  • the cautery element 18 can be extended by manual depression of the actuatable member 24 by manually depressing the button 26.
  • the actuatable member 24 also includes means for switching the electrical current and disconnecting the cautery element 16 from the source of electric current.
  • biassing means in the form of a leaf spring 30 is utilized for maintaining the button 24 in the upper position as viewed in Figs. 1 and 2, so that the cautery element 16 is normally and automatically retracted so that the electrical contact to the cautery element is normally open when the button 26 is released.
  • the cautery element 16 is extended and simultaneously therewith electric current is applied to the cautery element as a result of the contact between the switch contact 32, 34.
  • the device is intended to be used with trocars which are used in laparascopic surgery, a trocar being partially illustrated in Fig. 1 and identified by the reference numeral 38.
  • the electro-suction device of the present invention is intended to be inserted into the abdominal cavity through or by means of a trocar.
  • the size of the cautery element is not critical. However, it has been found that a cautery element having a dimension in the length direction of the tubular member 12 of approximately 5-6mm is satisfactory. Similarly, a cautery element having a dimension transverse to the length direction of the tubular element 12 of approximately 3mm is suitable for the intended purpose. Specifically referring to Fig. 4, there is illustrated a tubular member of circular cross- section, wherein the tubular member has a diameter which is approximately 5mm. Since trocars are typically of that diameter, the electro-suction device of the present invention needs to be dimensioned so as to be readily receivable into a trocar used in laparascopic surgery.

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Otolaryngology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Plasma & Fusion (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

Un dispositif d'électrocautère (10) se fixant à une pompe de succion et à une source de courant électrique comprend un élément tubulaire (12) dont une extrémité (14) est reliée à la pompe d'aspiration et l'autre extrémité (16) est introduite dans la cavité thoracique d'un être humain. Un élément de cautère rétractable (18) est monté sur l'extrémité (16) introduite dans la cavité du patient et est relié à une source de courant électrique. L'élément de cautère (18) peut être déplacé entre une position rétractée qui l'empêche d'être exposé aux tissus et une position déployée utilisée lors de la cautérisation. Un bouton (26) situé sur l'élément tubulaire (12) sert à déplacer l'élément de cautère (18) d'une position à l'autre lorsqu'on l'enfonce, et établit simultanément la connexion de l'élément de cautère (18) à la source de courant électrique.
PCT/US1994/009572 1992-12-18 1994-08-26 Dispositif d'electro-succion retractable WO1996006573A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US07/999,693 US5360427A (en) 1992-12-18 1992-12-18 Retractable electro-suction device
PCT/US1994/009572 WO1996006573A1 (fr) 1992-12-18 1994-08-26 Dispositif d'electro-succion retractable

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/999,693 US5360427A (en) 1992-12-18 1992-12-18 Retractable electro-suction device
PCT/US1994/009572 WO1996006573A1 (fr) 1992-12-18 1994-08-26 Dispositif d'electro-succion retractable

Publications (1)

Publication Number Publication Date
WO1996006573A1 true WO1996006573A1 (fr) 1996-03-07

Family

ID=26788385

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1994/009572 WO1996006573A1 (fr) 1992-12-18 1994-08-26 Dispositif d'electro-succion retractable

Country Status (1)

Country Link
WO (1) WO1996006573A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4911159A (en) * 1988-11-21 1990-03-27 Johnson Jeffrey W Electrosurgical instrument with electrical contacts between the probe and the probe holder
US4919129A (en) * 1987-11-30 1990-04-24 Celebration Medical Products, Inc. Extendable electrocautery surgery apparatus and method
US5195959A (en) * 1991-05-31 1993-03-23 Paul C. Smith Electrosurgical device with suction and irrigation
US5342357A (en) * 1992-11-13 1994-08-30 American Cardiac Ablation Co., Inc. Fluid cooled electrosurgical cauterization system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4919129A (en) * 1987-11-30 1990-04-24 Celebration Medical Products, Inc. Extendable electrocautery surgery apparatus and method
US4911159A (en) * 1988-11-21 1990-03-27 Johnson Jeffrey W Electrosurgical instrument with electrical contacts between the probe and the probe holder
US5195959A (en) * 1991-05-31 1993-03-23 Paul C. Smith Electrosurgical device with suction and irrigation
US5342357A (en) * 1992-11-13 1994-08-30 American Cardiac Ablation Co., Inc. Fluid cooled electrosurgical cauterization system

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