US591403A - Veterinary ecraseur - Google Patents

Description

(No Model.)

P. P. HOPFMANN.

VETERINARY EGRASEUR.

No. 591,403. Patented Oct. 12,1897.

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and useful'Veterinary Ecraseur, of which the severed, is provided, for cooperation with the UNITED STATES PATENT OFFICE.

FERDINAND F. HOFFMANN, OF BROOKVILLE, PENNSYLVANIA,

VETERINARY EC RASEU R.

SPECIFICATION forming part of Letters Patent No. 591 ,403, dated October 12, 1897.

Application filed August 28, 1896.

To all whom it may concern:

Be it known that I, FERDINAND F. Horn- MANN, a citizen of the United States, residing at Brookville, in the county of Jefferson and State of Pennsylvania, have invented a new following is a specification.

This invention relates to surgical instruments for veterinary ovariotomical purposes, and aims to provide an ecraseur which will enable the operation to beperformed expeditiously and with safety to the patient, since hemorrhage is avoided by crushing the artery simultaneously with the cutting.

The instrument will be described at length hereinafter, and its advantages will appear more fully as the nature of the improvement is disclosed and understood.

In the drawings, Figure 1 is a side elevation of an ecraseur constructed in accordance with this invention. Fig. 2 is a view at right angles to Fig. 1, partly in section. Fig. 3 is a detail perspective view of the active end of the sheath. Fig. 4is a detail view of the hook.

Similar numerals of reference indicate corresponding parts in all the figures of the drawmgs.

- A tube 1 forms the body portion of the instrument and terminates at one end in a sheath 2 and is provided at the opposite end with a handle 3. The sheath consists of a guide or keeper having parallel sides 4 and 5, of which the former only is extended to form a flat blade for attachment to the extremity of the tube, the outer side 5 and the end walls of the sheath terminating short of the end'of the tube to form an open space, for a purpose hereinafter explained. The walls 4 and 5 are respectively constructed to form a smooth cutting edge and a roughened or serrated cutting edge. A stem '6 is fitted for longitudinal movement in the tube, and the front end is provided with a hook 8, which is adapted to operate inand extend beyond the sheath, the stem being actuated to draw the hook within the sheath by means of a handle 9, fitted upon a threaded portion 7 of the stem and adapted to bear against thecontiguous rear extremity of the tube. The hook, which is adapted to engage an artery or cord to be Serial No. 6%,196. (No model.)

stem has been operated by the rotation of thehandle 9 to complete the severing operation the handle may be grasped and drawn manually backward in order to expose the hook in the space between the keeper portion of the sheath and the contiguous front end of the tube to prevent particles of tissue carried into the sheath by the hook from interfering with the rextension thereof for subsequent use. It will be understood that with this, as with other devices of the same class, the object is to sever anartery in such a manner as to prevent subsequent hemorrhage, and hence the contiguous smooth and serrated cutting-faces, of which the former serves to sever the artery, while the latter contuses the same at a point contiguous to the cut.

Having thus described the invention, what is claimed as new is-- 1. An ecraseur having an operating-rod terminating at one end in a hook provided with cutting and contusing edges, a guide for said rod terminating at one end in a sheath having cutting and contusing edges to cooperate with those of the hook, said sheath comprising a keeper portion carrying said cutting edges and adapted to receive the hook, and an open-sided portion arranged in rear of the keeper portion and adapted to expose the hook when drawn rearwardly through and beyond the keeper portion, and means for operating the rod, substantially as specified.

2. 'An ecraseur having a tubular body portion in which is fitted a longitudinally-movable operating rod provided with means whereby it may be actuated, said operatingrod terminating at its front end in a hook having opposite smooth and serrated cutting edges, and a sheath carried by the tube forming the body portion, having an inclosed or keeper portion adapted to receive the hook and provided with smooth and serrated edges for cooperation therewitlnaud having one side wall of said keeper portion extended and attached to the tube, the opposite side of the sheath being open to form a space exceeding the hook in length, whereby the hook may be to wholly exposed by drawing the same rear-

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