US1589923A - Surgical instrument - Google Patents

Description

June 22,1926. 1,589,923

R. W. ARMSTRONG SURGI CAL INSTRUMENT Filed July 30 1924 7 provide a surgical instrument of the above.

- posesfor Patented June 22', 1926.

UNITED STATES 1,589,923 PATENT" OFFICE.

ROBERT W. ARMSTRONG, 'OEVANGOUVER, WASHINGTON.

' sunercu. INSTRUMENT.

Application filed July 30, 1924. Serial No. 729,116.

moval of the tonsils A further object of the invention is to mentioned character, which is "simple in construction, inexpensive, strong and durable andfurthermore-adapted for the purwhich it is designated.

Other objects and advantages of this invention will become apparent during the course of the following description.

. In the'accompanying drawing forming a part of this specification and in which like numerals designate like parts throughout the same:

Figure proved surgical instrument.

Figure 2ris a longitudinal sectional View through the barrel showing the ligator member arranged therein and the pawls cooperatingwith the ratchet teeth of the ligator member, and 1 z Fi ure 3 is-a sectional view taken .approxlm'ately on line 3-3 of Figure 1.

In the drawing wherein for the purpose of illustration is shown the preferred embodiment of my invention, the numeral 1 desi ates the barrel of my improved surgica instrument and the forward end thereof is internally threaded as illustrated at 2 for receiving the rear threaded end of an elongated sleeve 3, the diameter of which is less than the diameter of the barrel. The sleeve 3 is provided with a knurled flange 4 adjacent the rear end thereof for facilitating the attaching of the sleeve in the forupper end bifurcated and pivotally secured on' o posite sides of the rear end of the barre 1 by means of the screws 6. The screws are adapted to extend through suitable openings provided in the upper bifurcated end of the handle 5- and are threaded into suitable threaded openin provided in o posite sides of the barrel 1 1n the manner c early illustrated in Figure 2 of the drawm j v Fxtianding longitudinally throu h the barrel and the sleeve 3 carried by e forward end thereof is thehgatormember designated generally by the numeral 7 The 1 is a, side elevation of my im-.

'ther provided opening 17 which is A handle, desigmajor portion of the-ligator member 7 comprises a substantially square shaped bar 8.

the same being disposed in the barrel 1 and having the rear end thereof extending beyond the rear end of the barrel 1. The substantially square shaped portion 8 has provided in the forward face thereof the ratchet teeth 9 and the purpose thereof will hereinafter be more fully described.

The forward portion of the ber=10 which extends through the sleeved) and the forward end thereof projects beyond the, forward end of the sleeve. The

ligatormemher 7 compnses a reduced cylindrlcal menu-- forward end of the cylindrical portion 10 caved portions such as are illustrated at 11 and also provided in the forward end of the cylindrical portion 10 and extending through the concaved portion' are the openings through one of the openings in the manner illustrated in Figure 1 of the drawing.

An operating lever or handle 14 is pivot-. ally associated with the handle 5 as at 15 and the upper end of the operating lever or handle is enlarged as illustrated at 16 and is furwith a transversely extending also substantially square for the purpose of receiving the rear-end of the substantially square bar 8 forming the rear portion of the ligator member 7. Secured operating handle 14 is the finger 18 which is formed of spring end thereof is provlded with an inwardly disposed pawl 19 which extends through a suitable opening provided in the front face of the enlarged portion 16 of the lever 14 and engages the ratchetlteeth 9 for the purpose of'inoving the ligator member 7 rearwardly through the barrel hereinafter to'be more fully described. For the purpose of releasing the pawl 19 from engagement with the ratchet teeth 9, the spring tinge transversely extending pin 20 which is arranged in a suitable opening provided in the upper portion of the handle 14 and an enlarged head 21 is arranged on the pin. 20

is provided with diametrically opposed con- 12. A. ligature 13 is adapted to extend metal and the upper in the manner r 18 has secured thereto the and extends beyond the rear face of the handle in the manner as clearly illustrated in Figure 3.

For the purpose of preventing the ligator memberfroin moving forwardly within the barrel and sleeve the spring pressed pawl 22 is pivotally supported on the barrel 1 as illustrated at 23 and the inner end of the pawl extends through a suitable opening 2st also provided in the barrel whereby the pawl will engage the ratchet teeth 9.

The operation of my improved surgical instrument maybe briefly stated as follows The parts are arranged as illustrated in Figure 1 of the drawing, with the ligature received in one of the openings 12 provided in the forward erid'of the ligature carrier. The instrument is then grasped and the sleeve 3 is placed in the mouth of the patient in such a manner as to have the ligature disposed around the infected tonsil. The

handle 14 is then actuated so as to cause the pawl 19 to successively engage the ratchet teeth 9 of the rear portion. ofthe ligator member causing the same to move rearwardly through the barrel and drawing the forward portion of the ligator member through the sleeve 3 in a step-by-step arrangement so as to facilitate the easy and ready removal of the infected tonsil. The spring pressed pawl will prevent the ligator member from moving forwardly in thebarrelduring the operation of the surgical instrument and by releasing the spring pressed pawl 22 the ligator member will be permitted to move forwardly in the barrel and the sleeve.

Itwill thus be seen from the foregoing description, that a surgical instrument for removing infected tonsils has been provided which will be very eiiicient and positive in carrying out the purposes for which it is designated and furthermore the parts are-so arrangedas to enable the same to be readily disassembled whenever it becomes necessary.

lVhile I have shown the preferred embodiment of my invention, it is to be understood that various changes in the size, shape and arrangement of parts may be resorted to without departing from the spirit of the invention and the scope of the appended claims.

Having thus described the invention, what I claim is 1. A surgical instrument of the class described comprisin a tubular open ended barrel, a rack bar slidably mounted in said barrel and having its toothed end extending benuisance yond the inner end of the barrel a sleeve I connected to the outer end of said barrel, said bar being provided with a cylindrical rod carried by the outer end and extending through and beyond said sleeve, a ligature carried by theouter end of said rod, a handle having an upper bifurcated end, said barrel being disposed between and pivotally conscribed comprising an open ended tubular barrel, a sleeve threaded into the outer end ofsaid barrel and disposed in alignment with the latter, a cylindrical rod extending slidably through and beyond said sleeve, a ligature on the outer end of said rod, a rack bar slidable in said barrel and connected with said rod, the toothed end of said rack bar, extending beyond the inner end of said Bil barrel, said barrel being formed in one side A with an opening, a spring pressed latch mounted upon the barrel and having engagement with the teeth of said bar, a handle bifurcated at its upper end, said barrel having its inner end disposed between and pivotally connected to the furcations, a lever pivoted between its ends on the intermediate portion of said handle and provided at its top with a head through which the inner end of said bar is slidable, said head being formed at one side with an opening, a resilient finger fixedly mounted upon the upper end of said lever, a tooth carried by said finger and projecting through said opening and cooperable with the teeth of said rack bar, and a pin carried by said lever and engageablewith said finger. for disengaging said tooth, said pin being provided with a finger piece.

In testimony wheereof I aflix my signature,

ROBERT w. ARMSTRONG.

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