US1722474A - Surgical snare - Google Patents

Description

July 30, 1929'- E. H. LANGBEIN SURGICAL SNARE Filed Feb. 20, 1928 Patented July 30, 192%.

hll'lE STATE EDVJARD I'I. LANGBEIN, OF BROOKLYN, NEW YORK.

SURGICAL SNARE.

Application filed February 26, 1923. Serial No. 255,818.

My invention relates to surgical instruments and to nasel and laryngeal snares n particular. My invention being appliet n this particular instance to the well known snare now used by surgeons generally for such operations on the nose and throat.

One object of my invention is to provide the instrument in use today for such opera tions with my improvement, so as to obtain the very best results from its manipulation. Thereby providing means therein whereby it cannot bind or get stuck at a critical moment while being use l.

Another object of my invention is. to provide a ball bearing for the reciprocating member so as to ai'ford an easy sure movement of the part that will conform exactly to the movement of the operators fingers.

member to move with the greatest case over the outside of the tubular body.

Another object is to provide the ball bearing that will operate on the inside of the tubular member. and have the balls so caged as to insure of their not becoming detached, should the instrument be taken apart for any reason. By simply removing the re taining screw the handle may be detached, and the reciprocating' member with the ball bearing part removed.

With these and other objects in view. my improvement consists in the consgruction combination and arrangement of the parts, as will be hereinafter more fully described, illustrated in the accompanying drawing, and pointed out in the claims hereto appended.

The invention as at present prefci e will be more clearly understood by reference to the drawing which illustrates merely an example of means for putting my improvement into practice and wherein;

Fig. 1, is a face view of a surgical snare with my improvement applied thereto;

Fig. 2, is a sectional view of the snare taken on line 22 of Fig. 1;

Fig. 3, is enlarged sectional view taken on line 33 of Fig. 1;

Fig. 4, is a longitudinal sectional view.

taken on line 1 lof F 1, showing the manner of housing and retaining the balls in position; v

Fig. 5, is a view of toe cage and balls as they appear before being attached to the reciprocating member, and

F 6., is a view of the snare.

Fig. 7, is an enlarged view showing a modified arrangement of my improvedball bearing.

Like reference characters designates like parts throughout the several figures of the all possible. friction or other reasons that may cause the reciprocatingmember to move other than with perfect freedom. My

improvement permits of a positive action with thatforceand' effect as maybe desired or found necessary by the surgeon.

, The snare comprisesa tubular body portion 10, having a reduced hollow extension 11 thereto at one end. The tubular body part has longitudinal slots 12 on opposite. sides for a distance of its length, while the other end of the tubular body portion is provided with a handle 13, comprising a thumb hole 14- and two extensions 15 and 16, the screw 17 secures the same to the tube 1O.v Over the outside ofsaid tubular. part reciprocates a member 18 which may beprovided'with finger openings 19 and 20. The inner face of the reciprocating member 18 is screw threaded for a portion of its length, as shown at 21,'so as to sec-ure'and hold fast a snare carrying base, 22 which in turn holds and retains a plurality of balls 23 in position within the tube 10. The balls are just a little less in diameter than the inner diameter of the tube 10, and thereby prevent any friction between the tube 10 and the reciprocating member 18 and permits perfect freedom of movement of the same. .The snare base 22 on its outer endmay be pro videdwith a boss 2% into which may be socured one end of a snare carrying rod-25, the outer end of which has therein two-eyes26, to which the snare 27 may be connected by means of hooks'28' that may be secured in the perforations 26. As shown the rod ter how it may be held or twisted.

a surgical instrument,

with the snare 27 secured on its outer end is adapted to enter the hollow member 11,

when the reciprocating member approaches the handle 13.

Referring to Fig. 2, it will be seen that the snare carrying base 22 is the full diameter of the inner bore of the reciprocating member 18, and permits the member to reciprocate back and forth freely. lVhile as has been noted the balls 23 just fitting the inner diameter of the tube 10, they move smoothly within the inner face of the tube and allow the reciprocating member 18 to be drawn over the tube 10 with thegreatest freedom, and with every assurance of it not binding at any'point of its travel. It matters not whether the operator exerts more pressure with one finger than the other, the member 18 will under any and all circumstances respond to the pressure and move smoothly in the direction of the pressure, be it forward or backward. When the base 22 engages the end of the slot 12 as shown in Fig. 4:, the snare expands to its full spread as shown in Fig. 1. i

The handle 13, where it receives the tube 10,"is provided with a spacing section 29, which will hold the two legs of the bifurcated tube spaced apart so as to prevent any possible friction to the reciprocatmg member. The screw '17 entering the outer walls 30 of the handle 13, and the spacing section as well as the tube 10, holds these parts securely together, and vice-versa when the screw is removed the parts may be detached for cleaning or other purpose. V \Vith my improvement applied to this snare, it is not necessary to place any agenon the tube 10, as is done now, to assist the reciprocating member to glide over the tube. The ball. hearing within the tube causes the same to move with perfect freedom, and with that positive assurance that the reciprocating part cannot possibly cohere or cies whatsoever, such as grease,

As stated above, the reciprocating ball bearing is shown and described in connection with but it may be applied to any bearing or any instrument where a free reciprocating movement is desired from all friction.

In Fig. 7 it will be seen that another va riation of my invention is provided. In this adaptation the tube 10 is not only slotted as shown at 12 but that said slot is provided with a channel 31 for the ball or balls 23 to operate within. The snare carrying base 22 in this modification is anchored in the wall 32 of the hub of the finger grips, or reciprocating member 18. A much thicker tube is used for this form of my in vention so as to accommodate the channel.

grooves in its edges. While the snare carrying base 22 in this instance is held sestick no matcure in the reciprocating member 18 by any means. For instance by a small rivet, pm

or screw.

The main idea is to provide a bearing for any instrument that will positively eliminate any and all possibility to bind, stick or cohere by any twist or uneven pull of the hand operating the finger grips. The same construction may be adapted to any other.

consider to represent the best embodiment thereof, but I desire to have it understood that the form of bearing is only illustrative as it may be carried out in other arts than that described. While the design of the reciprocating bearing adapted for this particular instrument it can be changed or altered to meet the particular requirement without interferingin any way with the general appearance or operation of the instrument.

hat I claim as new and by Letters Patent is: p

1. A surgical snare comprising a hollow tubular body having one or more guide slots therein, a reciprocating member adapted to slide over said tubular body, a removable desire to protect cage housing a plurality of" balls adapted, to slide within said tubular body, said cage havmg portions extending through the slots and en aging the reciprocating member to hold the reciprocating member steady and limit the forward and backward movement of the same.

2. A surgical snare comprising a hollow tubular body having one or more slots extending a portion of its length, an extension thereon, an operating part movable over said tubular body, a part operatable within said extension, a separating partition extending across the diameter of the movable part, said partition adapted to reciprocate with said operating part within the said slots and house a plurality of balls adapted to ride on the inner surface of the tubular body, and a handle adapted to hold the parts in posit-ion and limit the movement of the reciprocating-part.

3. A surgical snare comprising a hollow tubular body having one or more guide slots therein, a reduced hollow extension secured thereto, an operating member adapted to reciprocate over the tubular body, a rod adapted to operate within said extension, said reciprocating member having means exextension thereon, a reciprocating finger opcrating member on the outside of the tubular body, means operatable therewith for hous ing a ball bearing member w1th1n said body,

said member provided with a snare carrying rod slidable within the hollow extension,

and a handle for holding and limiting the rearward movement of the reciprocating member.

5. A surgical snare operating device comprising a tubular body part having slots on opposite sides thereof, a hollow extension thereon, a member adapted to reciprocate on the outside of the tubular body having a finger operating member, a ball bearing member removably secured to'the innerside of the reciprocating member, said ball bearing member operatable within said tubular body and at the same time adapted to reciprocate within said slots, and a handle for holding the tubular member thereto and limiting the rearward movement of the reciprocating member.

6. A surgical snare operating device comprising a tubular body part having one or more slots therein, a hollow reduced extension thereon, a reciprocating member slid-' able over said tubular body, a ball bearing device adapted to fit and slide in the slot of the tubular part, said ball bearing device having attached thereto a snare carrying rod slidable within said extension, said reciprocating member operatable 0n the out side diameter of the tubular body while the ball bearing device operates within the same, a handle having detachable means for securing it to the tubular body and for limiting the movement of the reciprocating member.

7. A surgical snare operating device comprising a tubular body part having slots on opposite sides thereof, said slots having ways therein for ball bearings, a hollow extension secured to the tubular body part, a member adapted to reciprocate on the outside of the tubular body having finger grips thereon, a ball bearing member secured to the inside of the reciprocating member, said ball bearing member operatable within ways in the slots of the tubular member, and means for limiting the forward and rearwardmovement of the reciprocating member.

8. A surgical snare comprising a hollow tubular body having guide slots therein, a reduced hollow extension applied to the first mentioned tubular body, an operating member adapted to reciprocate over the tubular body, a snare carrying base having a rod extending therefrom, said snare carrying base adapted to operate within the tubu- .lar body while the rod operates within the ably secured together and in alignment with the tubular body, and a handle to assist the operator in operating the reciprocating member and to limit its rearward movement.

9. A surgical snare comprising a hollow tubular body having slots therein extending a portion of its length, a reduced hollow extension thereon, a reciprocating member movable over said tubular body, a snare carrying base made detachably secured to the reciprocating member and having an extension to which the snare is attached, a handle on the base of the tubular body to cooperate with grips on the reciprocating member, whereby, when pressure is applied to the reciprocating member, the snare carrying base, the rod carried therewith, and the snare will be withdrawn from the hollow members. r

10. A surgical snare operating device comprising a tubular body, a slot in each wall of the tubular body extending a portion of its length, a reduced hollow extension, a reciprocating member removable on the tubular body, a detachable snare carrying base having a rod secured thereto provided with means for securing a snare, a handle on the bifurcated end to the tubular body, and a

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