US 1517787 A
Descripción (El texto procesado por OCR puede contener errores)
Dec. 1924; 1,517,787
E. LANGBEIN NASAL AND LARYNGEAL SNARE Filed July 9, 1921 8% d, gg l gmu [A EEJEIN Patented Dec. 2, 1924.
EDWARD LANGBEIN, 013 BROOKLYN, NEW YORK.
NASflL AND LARYNGEAL SNARE.
Application filed July 9, 1921.
To all whom it may concern:
Be it known that Enwnnn LANonniN, citizen of the United States, residing at Ridgewood Avenue, Brooklyn, in the county of Kings and State of New York, has invented certain new and useful improvements in Nasal and Laryngeal Snares, of which the following is a specification.
My invention relates to nasal and laryn geal snares, wherein it is designed for use by a surgeon when it is desired to perform such operations on the nose or in the throat.
The prime object of my invention is to provide an instrument that may be held in a perfectly normal manner, and obtain therefrom the best performance by the proper manipulation of its parts, while it is being held in a steady position. This can only be done when the design is such that the implement may be held not only steady, but at the same time firmly, which is one of the principal requisites when performing an operation. Accordingly it will be seen that the handle of my instrument is capable of being held as steady as possible, yet leaving the index or trigger finger free to act upon the trigger in a normal manner, which does not in any way throw the instrument out of the desired alignment while it is being operated.
With the improved snare a surgeon may perform an operation on the nose or throat with the greatest ease, and with no danger of the snare dropping out of alignment while being operated as is the case with. the snares now on the market.
With these and other objects in view, the improvement consists in the construction, combination and arrangement of the parts, as will be hereinafter more fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended.
The invention as at present preferred will be more clearly understood by reference to the drawing which illustrates merely an example of means for putting my im provement into practice, and wherein: Figure 1 is a side View of my improved snare, and Figure 2 shows the most secure and positive manner in which the instrument may be held and manipulated.
The same reference characters will refer to the same parts on the several figures. Referring now to Figure 1, the rod 3 is at tached to a ratchet extension 4, which ter- Serial No. 483,494.
inmates in a knob 5. The rod 3 and ratchet are housed within a suitable encasement, which for convenience is made in two parts, the front part 6, being of suiiicient diameter to permit the rod 3 and the snare that may be attached to the end within the holes 7 and 8, to be pulled by the ratchet within the tube 6. The snare is adjusted over the parts to be severed and then drawn taut by the hand. Then by operating the trigger as will be presently described, the snare is gradually tightened about the part, and as the operator continues to operate the trigger it not only cuts the parts so surrounded, but by the gradually increasing tension, causes the small veins within those parts to become contracted, and closed, some of which do not have to be acted upon by the surgeon.
The rear part of the encasement or housing 9, about the ratchet on its upper side may be provided with a spring lock 10, having a downwardly extending finger, 11. the operation of which will be explained further on, and a lower ratchet engaging finger 12. From the under side of the housing 9 extends a part 13, to which the handle 14: may be secured, said extension carrying all the coacting parts that co-operate with the ratchet. A lever 15 is hinged at 16, and to its upper end being suitably hinged a pawl 17, the latter is held in operative position by a spring 18. The pawl 17 may be provided with an outwardly extending pin 19 which may extend in the path of the finger 11, so that when it is desired to return the ratchet forward or to its co-operative position, by pressing said spring 10, downwardly the finger 12 is released from contact with the ratchets, and the finger 11, presses down on the stud 19 which in turn causes the pawl 17 to be released from the teeth of the ratchet, and thereby permits the operator to shove the parts back into the position shown in Figure 1.
To the opposite end of the lever 15 may be suitably hinged at 20, a link 21, the latter extending through a slot (not shown) in the extension 13, and at its opposite end 222, it may be secured to the upper end of a suitably designed spring pressed trigger 23, the latter being provided with a trigger finger hold 241-. The trigger may be suitably hinged to the extension 13 by an arm 25, extending within the said extension and held operatively secured by screw 26,
and the spring 27 causes the trigger to as sume its operative position at all times while the rearward movement of the lever 15 is limited by the stop 28.
From the above description it will be seen that my snare has every convenience for holding it not only convenient and secure, but affords every facility for holding it absolutely steadywhile it is being operated. It diilers from other snares in that the ratchet is propelled by means of a spring pressed finger trigger situated anteriorly. With the trigger so located and operated. it allows the operator to grasp the instrument with merely the second, third and fourth fingers and thumb, and yet insure absolute control, and make it possible to operate the ratchet with the index finger, or trigger finger only. Vith reference to the above, Figure 2 will show with what force and effect an operator may hold and operate the device, the parts being designed so as to enable the instrument to be held absolutely steady while performing the operation, as had been noted, and at the same time enable the surgeon to exert all possible pressure on the operating parts to accomplish the desired purpose.
I am aware that snares have been in use for some time but their manner of holding and operation are such as to cause the operator every apprehension till his operation has been completed, on account oi the location and arrangement of the operating parts. My improvement has also the advantage over all instruments of similar construction in that all movement of the distal end of the canula is eliminated; thus atfording the operator precision in executing operations upon delicate and vital structures, as has been noted.
In accordance with the provisions of the Patent Statutes, I have herein described the principal form of my invention which I now consider to represent the best embodiment thereof, but I desire to have it understood that the herein described form is only illustrative and that the invention can be carried out in other ways than that described, but all are intended to come with r in the scope of the claims.
Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:
1. A surgical snare operating device comprising a tubular body part, a snare carrying rod slidable in said body part and having ratchet teeth on its rear end portion, a spring latch mounted, exteriorly on the tubular body partand normally urged against said ratchet teeth to hold the rod from outward movement, a handle rigidly carried by the body part and having a handhold at its lower end adapted to be grasped firmly in the hand for firmly holding the body portion in position of use, a pawl on the body part for engagement with the ratchet teeth to advance the rod rearuuirdly in the body part, and an operating trigger shorter than the handle connected to the pawl and pivoted on the upper end of the handle above the handhold for operation by the index finger of the hand without relaxing the grip upon the handle.
2. A surgical snare operating device comprising a tubular body part, a. snare carry ing rod slidably mounted in the body part and having ratchet teeth upon its inner end, a handle rigidly mounted on the body part and having a handhold at its lower end adapted, to be grasped in the hand for holding the body part in position for use. a pawl pivotally mounted on the inner end oi? the handle in position to engage said ratchet teeth, a trigger pivoted on the upper portion of the handle above'the handheld, a link connecting the trigger to said pawl l'or oscillating the latter to retract said rod in the body part, and a spring latch mounted upon the body part and i'lormallv urged against said ratchet teeth for holding the rod from moving outwardly, said spring latch being disposed exteriorly upon the body part in position for direct compression to release said rod.
In testimony whereof I ailix my signature.