US1215512A - Trocar. - Google Patents

Description

D. H. FETZER.

TROCAR.

APPLICATION FILED JAN. 4. 1916.

1 ,21 5,5 1 2 Patented Feb. 13, 1917.

WITNESS, IN V EN TOR.

ATTORNE Y.

UNITED STATES PATENT OFFICE.

TROCAR.

Specification of Letters Patent.

Patented Feb. 13, 1917.

Application filed January 4, 1916. Serial No. 70,323.

To all whom it may concern.

Be it known that I, DAVID H. Fn'rznn, a citizen of the United States, and residing in Dormont Borough, in the county of Allegheny and State of Pennsylvania, have invented or discovered new and useful Im; provements in Trocars, of which the following is a specification.

My invention consists in new and useful improvements in trocars or instruments used by embalmers for aspirating the liquids and ases from a dead body and injecting in their place an embalming fluid.

The object I have in view is the production of a trocar which may be connected up with. the necessary bottle to receive the liquids and gases from the body and with a second bottle containing the embalming fluid to be substituted therefor, and may then be introduced into cavity or portion of the body and be used for both aspiration and injection without requiring the removal of the trocar from its place of introduction into the body.

For the accomplishment of this purpose, I provide a trocar which comprises a metal tube whose one end is provided with a removable sharp inserting point and whose other end is bifurcated to provide two branches which are connected, respectively, to a receiving bottle for the body liquids and gases and a second bottle containing a supply of embalming fluid to be injected into the body. A two-way valve is located at the juncture of the two branches with the body of the trocar so that either branch may be connected with the main bore of the trocar or both of said branches may be cut off from said bore and from each other.

In the accompanying drawings, Figure 1 shows in plan my improved trocar connected up with the receiving bottle and the em balming fluid bottle, ready for service; Fig. 2 is a broken horizontal section of the trocar, on enlarged scale, taken along the line II II in Fig. 1; Fig. 3 is a section of the trocar taken along the line HIIII in Fig. 2 illustrating the trocar connected to the embalming fluid bottle for the injecting op eration; Fig. i is a similar view illustrating the trocar connected to the receiving bottle for the aspirating operation, and Fig. 5 is a similar view showing the trocar cut off from both the receiving and embalming fluid bot ties and said bottles cut of]? from each other.

The following is a detailed description of the drawings.

A is the trocar proper, comprising a metal tube having a sharpened end piece 1 attached thereto by threaded engagement, so that when said end piece becomes dull a fresh one may be substituted. The bore 2 of the trocar extends rearwardly and connects with a cylindrical, preferably tapered, valve seat 3 from which lead the two branch tubes 4 and 5. (3 is a valve plug adapted to rotate in seat 3 and provided with a transverse valve port 7 of substantially the contour shown, which, when the valve plug is turned to the proper position, may either connect the bore 2 of the trocar with the branch l, as shown in Fig. 4-; or connect said bore with the branch 5 as shown in Fig. 4;; or may completely seal said bore and said branches from each other, as shown in Fig.

The branch 4t is connected by a rubber tube 8 with a suction pump 9 which is in turn connected by a rubber tube 10 with a receiving bottle B. while a rubber tube 11 connects the branch 5 with a bottle C which holds a supply of embalming fluid. 12 is a forcing bulb introduced in the tube 11 to withdraw the contents of the bottle C and inject the same through the trocar into the dead body.

By preference, as shown in the drawing, the aspirating branch at is a straight con tinuance or extension of the trocar-bore 2. This construction I have found by experiment to be important; for a tortuous passage for the withdrawal of the fluid and. semi-fluid contents of the body, mixed. with lumps of solids, is decidedly objectionable, since deposits collect in the bends of such a tortuous passage, interfering with a free and unobstructed passage therethrough, with the consequence that such passage has not only to be cleaned frequently, but is dihicull to clean.

A. marked and salient advantage is gained 1 semi-solid matter withdrawn from the body, and which cannot be dislodged by the pressure of the embalming fluid in the injecting operation, so that the tro-ear must be disconnected from the body to allow a cleaning wire or ram-rod to be run therethrough to open up the passage. This grave disadvantage and defect are obviated in my invention by the use of a single two-way valve disposed at the junction of the two branches 1%. and 5 with the bore 2 oi? the trocar.

Additionally, the use of two valves, one in each branch 4L and 5, would be objectionable, as more manual operations are required in the use of such a device, as each valve has to be manipulated. With my device, there is but a single valve to manipulate, thus not only simplifying the structure and the cost oi. production thereof, but, also, reducing the number of manual acts required by the op erator in the use thereof.

The method of using my improved trocar is as follows.

The sharpened end piece 1 is inserted into a cavity or other portion of the dead body and the valve 6 is turned into the position shown in Fig. i. The suction pump is now operated to withdraw or aspirate the liq uids and gases from the body into the bottle B. The valve 6 is then turned into the position shown in Fig. 3 and by means of the bulb 12 the embalming fluid from the bottle C is injected into the body. The valve 6 is then turned into the position shown in Fig. 5 and the trocar removed from the body.

The use of my improved trocar is attended by numerous advantages. l Vhen using the ordinary trocar two insertions of the same into the body are required. After the first insertion and the aspirating operation, the trocar is withdrawn and disconnected from the receiving bottle. The e1nbalming fluid bottle is next connected to the trocar and the latter again inserted into the body. It is, of course, highly desirable that the embalmlng fiuld be introduced at 'the same point at which the body liquids and gases are withdrawn, and this is diiiicult where two insertions are required.

VJ hen my improved trocar is used but one insertion is necessary, and the time now consumed and the trouble incurred in withdrawing and reinserting the trocar and in disconnecting it from the receiving bot tle and connecting it with the embalming fluid bottle are saved.

llotwithstanding, the additional advan tages of my trocar, the same is of simple and inexpensive construction and the extra weight is so slight as to be negligible. The instrument takes up no more room in the embalmefis satchel than the trocar now in general use.

All the connections are made directly to the trocar, requiring no additional rubber tubing nor the introduction into the tubes of numerous valves or fittings.

What I desire to claim is:

A trocar comprising a straight tubular body, one end of which is formed for engagementwith a removable puncturing endpiece, and the other end of which is bifurcated to provide two branches, the bore ol one of said branches forming a straight extension of the bore of said body, and a rotatable twoway valve at the junction of said branches with said body, and having a diametric port therethrough, the valve being rotatable to bring said port in alinement with the bore of said body and with the bore of said extension, providing an unobstructed passage through said body, extension, and valve, whereby a straight cleaning-rod may be projected therethrough.

Signed at Pittsburgh, Penna, this 31st day of December, 1915.

DAVID H. FETZER.

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

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