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Publication numberUS2444207 A
Publication typeGrant
Publication dateJun 29, 1948
Filing dateMay 11, 1945
Priority dateMay 11, 1945
Publication numberUS 2444207 A, US 2444207A, US-A-2444207, US2444207 A, US2444207A
InventorsSmith Samuel Brown
Original AssigneeSmith Samuel Brown
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Surgical probing and extracting pliers, electrically controlled
US 2444207 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

June 29, 194:8.` S.


B. SMITH PLIER ELECTRICALLY CONTROLLED Flled May ll, 1945 Patented June 29, 1948 UNITED STATES ifliTlazrITy oFFlcE SURGICAL PROBING AND EXTRACTING PLIERS, ELECTRICALLY CONTROLLED Samuel Brown Smith, `North Hackensack, N. J. Application Mayll, 1945, Serial No. 593,188

1 My present invention, in its broad aspect, has to do with improvements in surgical probing, loeating and extracting pliers with automatically operated `electric means for signalling when an object being probed for, such as a bullet, has Abeen located. To this end, I provide a unique handle means for improved probing tools, wherein an electric lamp and battery are provided which are normally out of circuit; the arrangement of parts being such that the circuit is fully completed only when the metallic object probed for, as for instance, a bullet, is located and firmly grasped by the tools. When the bullet has been grasped, the circuit is completed to the lamp to provide a signal and also to fully illuminate the operation of extraction. Another object of my invention is to provide an improved handle wherein the iinger grip portions have compartments therein; one to receive the light and battery, and the other to receive tools, appliances, and accessories; and wherein the handle elements are fully insulated from each other` and a spring tensioning device is provided which serves both to improve the `operation of my device and fully complete the `circuit to the lamp once the bullet, or other ob.-

ject, has been firmly grasped by the tool jaws.

Other and equally important objects and adu vantages of my invention are (1) to provide a device which can be kept in a highly sanitary condition, and can be readily cleaned and sterilized, (2) to provide a tool and handle which is practical and easily operated, and (3) to simplify, render more sturdy, and improve surgical instrument construction to the end that a more desirable implement is provided.

With the above and other objects in view, my invention resides in the broad inventive concepts characterized for purposes of illustration in the parts and arrangement of parts hereinafter described and illustrated.

In the drawings wherein I have illustrated a preferred form of my invention:

Figure 1 is a side View thereof, partly broken away, and in section to illustrate the several parts.

Figure 2 is an edge view.

Figure 3 is `a section taken on the 1ine3--3 of Figure 1.

Figure 4 is a section through the tool taken on the line 4-4 of Figure 1, and;

Figure 5 is a detail of one element of the tool, both elements being of similar construction.

In the drawings wherein like characters of reference are used to designate like or similar parts throughout the several views:

5 Claims. (Cl. 12S-2.1)

The numeral I 'designates the handle elements which are exteriorly contoured as at 2 to provide finger grips, and each of which has an elongated compartment designated 3 and t, respectively, formed therein. The exterior wall of each compartment is screw threaded to receive thereon an interiorly screwthreaded, knurled cap 5. Compartment 4 is fully closed when the cap 5 is applied and'mayv be used to contain extra parts; tools, and the like. An opening 'I is provided in the compartment 3 opposite the cap 5 for a purpose to appear.

In compartment 3 is a battery Ii, and adjacent the opening 'I of compartment 3 is a lateral opening 8 in which is mounted an insulating eye S to receive a contact stud Ill on the U-spring II attach-ed to handle element 4. Mounted the opening l of compartment 3 Vis a bushing I2* mounting `a light bulb I3 which contacts with battery 5, so that when the toolelements (hereinafter described.) are brought together to rmly grip a metallic object, such as a bullet A, and handle elements 3 and 4 are brought together against the tension of spring II, the `uninsulated part of battery (i is contacted by stud It to com` plete'the circuit whereby current will flow from the exposed portion of the battery case 6, in the upper handle element of Figure l., through the stud III secured to the U-shaped spring I I, which being fastened to the lower handle element I,`will direct the current 'to the same` and then through the upper tool element l5) to the jaw element 24. When a metallic object, such as A, is gripped by the jaw elementsd, forming part of I9,` current will flow from the' upper jaw element 2t, Vthrough the metallicobject A to the lower jaw element 24 and backk through the lower tool element I9 to the upper handle element I, and thenthrough the bushing i2 to the light bulb I3 and back to battery, thereby lighting the bulb I3 whereby its rays are projected through the opening I to serve as a signal and facilitate removal of the object sought. l v

`The handle elements have `crossed Shanks I4 and I5 respectively, which are offset with respect to each other as shown in Figure 3 and pivoted together by the screw I5, with intervening insulating washers Il between adjacent parts of the handle elements, and an insulating bushing I'Ia about the screw, thereby to normally fully insulate the handle elements from each other. The ends of Shanks I4 and I5 are bored as at I8 to receive the tool elements I9. Set screws 2U are provided to hold the tool elements in place.

Ea-ch tool element I9 has a long shank part 20a In describing the operation of my pliers, it is having a contact pin for engaging the battery Ythereby to complete the electric circuit to the bulb when a metallic object is grasped by the tool elements.

3. The invention as described in claim 1, comprising elongated, parallel handles the exterior parts of which are contoured to t the fingers,

vshank portions crossed in advance of the handies and fully insulatedA from each other, a pivoting screw for holding the Shanks together, and a reduced tool engaging portion on each shank.

to be noted that in order to fully complete the circuit to the lamp bulb, not only must contact stud Il] engage the uninsulated part of battery 6, but the jaws 24 of tool elements I9 must grip a metallic object therebetween. Therefore, my pliers are used in probing and exploring for a bullet, or the like, and I have found that upon contact, the lamp will usually flicker as a preparatory signal, and when the bullet, or other metallic object is rmly grasped between the jaws, the circuit is fully completed Vand the bulb I3 energized not only to function as a signal, but

to facilitate manipulation of the pliers to remove the bullet.

While it is believed that the operation and advantages of my invention will be apparent from thev foregoing, it is emphasized that my instrument is compact and sturdy, and practical and efficient for the purposes intended. Interpretation of the scope of my invention should only be conclusive when made in the light of the subjoined claims.

I claim:

' '1; VA surgical implement comprising handle portions formed with elongated compartments therein, means for closing the ends of said compartments, a battery and a light bulb carried in one compartment, and an opening in the end wall of the said one compartment through which the rays of the bulb are projected forwardly of the handles, said handles having pivotedcross Shanks fully insulated from each other, a spring between the handles, an opening in the battery carrying compartment, a Stud on the spring extending through said opening to Contact the battery when the handles are brought together and tool .elements removably attached to the Shanks of the handle elements so that when contact is completed on a metallic object by the tool elements, the circuit is completed to the vlight bulb.

2. A tool. handle, comprising pivoted crossed Shanks fully insulated from each other and having bores in the ends thereof, tool elements in said bores and thumb screws to lock the same therein, said handle elements being formed with cylindrical compartments longitudinally of the handle elements, screwthreaded closures for the compartments, one compartment having an opening directed toward the Shanks, a battery in said latter compartment, a bulb carried in said compartment anddirected toward the `opening therein to illuminate the tool elementsv fixed to the Shanks, and a spring device for the handles 4. The invention as described in claim 1, comprising tool elements in the Shanks, each having an elongated portion and outwardly bent ends, and the free end'of each tool element having an internally serrated or toothed semi-circular gripping jaw.

5. A surgical instrument comprising a pair of handles having the exterior thereof contoured for manual engagement, one of said handles having interiorly thereof a cylindrical compartment, a battery therein, an insulating bushing closing one end of' said compartment, a signal bulb secured in said bushing and contactingan end of said battery, a threaded cap member closing the other end of said compartment, one of Said handles having an aperture through its side wall communicating with said compartment and registering with said battery shanks secured to the ends of said handles, said Shanks overlying andcrossing each other, a pivot member, an insulating annular bushing thereon extending through said Shanks, insulating washers on said annular bushing insulating said Shanks from each other and from said pivot pin, a Substantially U-shaped spring element between said handles tending to separate the same about said pivot pin, means fastening one leg of said spring element to one of said handles, a-stud secured to the free end of the other leg of said-spring element and projecting through, but spaced from the walls of, said aperture and adapted to contact Said battery whereby said U-shaped spring becomes a conductor of current, tool elements secured to said Shanks, and gripping portions forming the terminal ends of said tool elements and adapted to engage and clamp a metallic object whereby an electrical current from the battery through the handles and tool elements will be completed to illuminate said signal bulb.


REFERENCES CITED The following references are of record in the le of this patent:


Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1912185 *Dec 12, 1930May 30, 1933William A FroeckmanElectrical testing apparatus
US1997231 *Sep 6, 1934Apr 9, 1935Nicola C PlutinoPencil flash light magnet
US2176479 *Mar 20, 1937Oct 17, 1939Willis David AApparatus for finding and removing metal particles from human and animal bodies
FR486982A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2982912 *Feb 17, 1958May 2, 1961Allegheny Ludlum SteelTesting apparatus
US3460528 *Apr 20, 1965Aug 12, 1969Carney Henry JApparatus for locating and removing foreign matter from animal tissue
US3487302 *Mar 14, 1966Dec 30, 1969Hale Elgie JMoisture content tester including a probe having a material sampling chamber
US4413870 *Jul 30, 1981Nov 8, 1983Labutski Iii Justyn JPivotable spark plug connector
US5207702 *Aug 14, 1991May 4, 1993Pearl Michael LMethod and apparatus for handling hygroscopic dilators
US6161937 *Dec 26, 1997Dec 19, 2000Rosenstatter; OttoDental handpiece
US20120253364 *Aug 30, 2011Oct 4, 2012Perin James CSurgical Instrument Handle and Grip
U.S. Classification600/550, 340/573.1, 362/804, 439/11, 606/207
International ClassificationA61B17/50
Cooperative ClassificationA61B17/50, Y10S362/804
European ClassificationA61B17/50