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Device for coagulation of biological tissues
| Details |
Inventors: Fedorov, Svyatoslav N.; Krutov, Sergei V.; Soloviev, Sergei A.; Alexandrova, Olga G.; Korshunova, Nadezhda K.;
Assignee:
Primary Examiner: Cohen; Lee S.
Assistant Examiner:
Attorney, Agent or Firm: Ladas & Parry
Device for coagulation of biological tissues, preferably the eye cornea has a casing accommodating a hollow rod having one end thereof supporting a heating element secured thereto and facing towards the eye cornea and having the other end thereof operatively connected, by means of a connecting member, with a shaft of an electric motor accommodated in the casing on which a stop for limiting movement of the hollow rod is mounted, the stop being in the form of a hollow fine adjustment screw having a dial gage in the form of a scale provided on the head of the hollow fine adjustment screw and an indicator mark made on the casing. A stop for limiting movement of the heating element is secured to a working end of the casing facing towards the eye cornea, the stop being in the form of a cantilever having a free end thereof supporting a rigid ring secured thereto coaxially with the heating element. The device has a unit for automatically controlling the heating temperature and treatment time having one output thereof connected to a power supply unit having its outputs connected, through the automatic control, unit, to the heating element and electric motor. |
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DETAILED DESCRIPTION OF THE INVENTION A device for coagulation of biological tissues comprises a casing 1 (FIG. 1) made of metal, e. g. DURALUMIN (a high strength aluminum alloy containing 4% copper, 0. 5% magnesium, 0. 25-1% manganese and low percentages of iron and silicon) and featuring a protruding portion 2 having its working butt end 3 facing the object of treatment, i. e. the eye cornea (not shown in FIG. 1). A longitudinal passage 4 having an external outlet 5 at the working butt end 3 is made in the protruding portion 2 of the casing 1. The device is provided with a hollow rod 6 mounted for reciprocation (arrow a-b) in the longitudinal passage 4. A heating element 8 in the form of a rigid loop is secured, by means of a microjack 7, to one end 6' of the hollow rod near the external outlet 5 of the longitudinal passage 4. A working end 9 of the heating element 8 is made in the form of a conical pointed member. The casing 1 accommodates an electric motor 10 having a shaft 11 whose longitudinal axis is parallel to the longitudinal axis of the hollow rod 6 mounted in the longitudinal passage 4 communicating with an interior space 13 of the casing 1 through its internal outlet 12. The butt end 6" of the hollow rod 6 facing the interior space 13 of the casing 1 is operatively connected, by means of a connecting member 14, with the shaft 11 of the electric motor 10. The interior space 13 of the casing 1 is divided onto two compartments by a protrusion 15 made on internal walls of the casing 1 and ensuring, together with a cover 16, stationary installation of the electric motor 10 in the casing 1. The device is also provided with first a stop 17 for limiting the movement of the hollow rod 6, having a dial gage 18, secured to the casing 1 and with a stop for limiting the movement of the heating element 8, which is a cantilever 19 having one end thereof rigidly secured to the working end 3 of the casing 1, the rigid ring 20 being secured to the free end of the cantilever 19 coaxially with the working end 9 of the heating element 8
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