US1009065A - Sewing device for surgical operations. - Google Patents

Description

F. HAHN & R. GRAP.

SEWING DEVICE FOR SURGICAL OPERATIONS.

APPLICATION FILED APR.30, 1910.

1,009,065, PatentedN0v.21,1911.

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COLUMBIA PLANOGRAPH CO-,WASHINUTON, D. C-

F. HAHN & R. GRAF.

SEWING DEVICE FOR SURGICAL OPERATIONS. APPLICATION FILED APR.30,1810.

2 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH CO.,WASHINGTDN n c Patented Nov. 21, 1911.

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FLORIAN HAHN AND RUDOLF GRAF, OF NUREMBERG, GERMANY.

SEWING DEVICE FOR SURGICAL OPERATIONS.

Specification of Letters Patent.

Patented Nov. 21, 1911.

Application filed April 30, 1910. Serial No. 558,574.

To all whom it may concern:

Be it known that we, FLoRIAN HAHN and RUDoLr GRAF, of Nuremberg, Bavaria, Germany, have invented an Improvement in or Relating to Sewing Devices for Surgical Operations, of which the following description, in connection with the accompanying drawing, is a specification.

This invention relates to a sewing device for surgical operations, which is particularly suitable for sewing openings produced when surgical operations are performed on the intestines and stomach, and has for its object to make the seam as quickly and as uniformly as possible, and in that way to reduce considerably the time of the operation, in the interests of the recovery of the patient. This is effected by guiding in a positive manner on a longitudinally slotted forceps holding the edges of the wound to be closed, a small sewing machine which is moved by means of hand levers or cranks, in

such manner that by depressing the hand lever or rotating the crank, the machine is automatically advanced to the extent of a stitch. One construction of such a sewing device in which the sewing machine is moved by means of a hand lever, is illustrated in Figures 13 of the accompanying drawing.

Fig. 1 is a front elevation, Fig. 2 a plan and Fig. 3 an end view. Fig. 4 is a front elevation of a modified embodiment of this invention. Fig. 5 is a side elevation of said modification, and Fig. 6 is a detail view thereof.

As will be seen from the drawing, the forceps 1 which for the rest is of the usual construction, is provided at its two jaws 2 3 with longitudinal slots and carries on the upper jaw a bar 4 also provided with a longitudinal slot and engaging with one end over a pin 5 secured to the jaw 3, and near the other end being held by means of a lug 6 and a bolt 7 secured to the jaw 2 and carry ing a thumb nut. This bar 4 is provided throughout the whole of its length with a dove-tailed groove 8 and carries on one of its lateral ledges the teeth 9. In the dovetailed groove 8 of the bar 4 is guided the casing or frame 13 of the sewing machine by means of its foot 10 which also has the shape of a dove-tail, and the said frame is positively moved by means of the wheel 21 meshing with the teeth 9 of the bar 4. The sewing machine itself consists of an arm 11 secured to the casing or frame 13, and an arm 14 pivotally mounted by means of a pin 12 in the casing 13; the said arm 14 tends to remain extended in the upper position by reason of a helical spring 15 and is provided with an extension projecting beyond its pivot point and formed as a toothed segment 16. This toothed segment 16 engages with the toothed wheel 17 mounted in the frame 13 and engaging with the teeth 18 of the needle bar 19. By depressing the lever 14, the needle bar is consequently moved downward, and the needle 20 carried through the longitudinal slots of the guide bar 4 and of the jaws of the forceps, while on the downward pressure acting on the arm 14 ceasing, the said arm will return to the upper position under the action of the helical spring 15, and will raise again the needle bar by means of the toothed gearing 16, 17, 18.

The toothed wheel 17 is twice as wide as the toothed segment 16, and in addition to the latter, is also in engagement with a toothed segment 22 which is rotatably mounted in the frame 13 by means of a pin 23 and is provided with a backward projection 24 to which is pivoted the rod 26 oscillating the shuttle 25. The rod 26 is provided with a longitudinal slot through which projects the pin 27 which engages the shuttle, so that by shifting the pin 27 in the longitudinal slot of the rod 26, the amplitude of oscillation of the shuttle may be modified. In the casing or frame is, moreover, arranged in the usual manner the thread guide eye 28, the loop drawer (tightener) 29, the device 30 for regulating the tension of the upper part of the thread, and the spool holder 31 which, for insuring aseptic work ing, is surrounded with a perforated casing.

In order that the sewing machine should be advanced at each depression of the lever 14 to the extent of a stitch, to the segment 16 is connected a pawl 32 which, during the depression, advances the toothed wheel 21 to the extent of one tooth, but during the raising of the lever springs back over the toothed wheel into the next gap between the teeth, the spring 33 mounted in the frame preventing the wheel 21 from turning back.

To the upper one of the two longitudinally slotted jaws 2, 3 of the forceps 1 of the modification shown in Figs. 4 to 6, is secured the longitudinally slotted bar 4 provided with a dove-tail groove and carrying on its lateral ledge the tooth rack 9 as in the previous construction. In the groove of the said bar is guided, by means of a suitable foot, the frame 36 of the sewing machine which projects downward with an arm 40 beyond the bottom aw 2 of the forcops, and at its free end forms a bearing for the disk 39 secured to the crank handle 41. To the said disk 39 is connected a rod 35 connected to the needle bar, so that by rotating the disk 39 by means of the crank handle 41, the needle is moved up and down in the longitudinal slots of the jaws of the forceps, and a chain stitch is produced in a well known manner by rotating a gripper 44 mounted on the spindle of the crank disk 39.

In order to advance the sewing machine after the formation of each stitch to the length of a stitch, to the crank disk 39 is secured a pin 42 projecting toward the frame and cooperating with a feed wheel 38 mounted on the casing and having the shape of a Geneva wheel, in such manner that for each revolution of the crank disk, the wheel 38 is partially rotated. Moreover to the spindle 37 of the feed wheel 38 is connected a toothed wheel 43 engaging with the toothed rack 9, the rotation of the feed wheel 38 being transmitted to the toothed wheel 43, and in that way the machine frame is intermittently advanced to the length of a stitch.

Having now particularly described and ascertained the nature of our said invention and in what manner the same is to be performed, we declare that what we claim is 1. In combination with a forceps provided with jaws, a frame movably mounted on said forceps, a jaw of the forceps be ing provided with a guiding groove, said frame being provided with a projection extending into said guiding groove, a needle slidably secured in said frame, means for reciprocating the needle with respect to the frame and means for intermittently displacing said frame on said forceps.

2. In combination with a forceps provided with jaws, a frame movably mounted on said forceps, a needle slidable on the frame, a rackbar disposed on a jaw of said forceps, a gear rotatably mounted on said frame and in engagement with said rackbar, means for reciprocating the needle through the forceps and means for actuating said gear.

3. In combination with a forceps, a frame movably mounted on said forceps, a rackbar rlgldly fastened on sald forceps, a gear rotatably secured to said frame, a needle slidably guided in said frame, means for reciprocating said needle through said forceps, and means for actuating said gear while the needle is moving in a certain direction.

4. Incombination with a forceps provided with slotted jaws, a frame movably mounted on said forceps, a rackbar rigidly fastened to one of said jaws, a gear rotatably secured in said frame and in engagement with said rackbar, a needle rod slidably guided in said frame, a needle carried by said rod, a crank disk rotatably mounted in said frame, a connecting rod between said disk and said needle rod and means in 00- action with said disk for intermittently rotating said gear.

5. In combination with aforceps provided with slotted jaws, a frame movably mounted on one of said jaws, a rackbar rigidly secured to one of said jaws, a gear rotatably mounted in said frame and in engagement with said rackbar, a needle rod guided in said frame, a needle carried by said rod, a crank disk mounted in said frame, a connecting rod pivotally secured to said disk and to said rod, a Geneva wheel rotatably mounted in said frame and connected with said gear and means in coaction with said cam disk for intermittently rotating said Geneva wheel.

6. In combination with a forceps provided with slotted jaws, a frame movably mounted on one of said jaws, a rackbar rigidly secured to one of said jaws, a gear rotatably mounted in said frame and in engagement with said rackbar, a needle rod guided in said frame, a needle carried by said rod, a crank disk mounted in said frame, a connecting rod pivotally secured to said disk and said needle rod for reciprocating said needle through the slots in said jaws, a Geneva wheel in operative connection with said gear, and a pin fastened to said disk and adapted to periodically engage said Geneva wheel in every revolution of the disk.

In testimony whereof we afiiX our signatures in presence of two witnesses.

FLORIAN HAHN. RUDOLF GRAF.

"Witnesses Hummer-r FIETI-I, OSCAR BOOK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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