US2156522A - Booster embalming tube - Google Patents

Description

y 1939- A. v. BOWMER 2,156,522

BOOSTER EMBALMING TUBE Filed June 11, 1937 i 1 4 13 l 1211/ .dM/V/V IN V EN TOR.

141%? Vfiomme "a fldumufg A TTORNEYS.

Patented May 2, 1939 UNITED STATES ATENT OFFIQE 4 Claims.

My invention relates to improvements in a booster embalming tube, and it consists of the combinations, constructions and arrangements hereinafter described and claimed.

In the standard embalming tube, a piston is used for aiding the Withdrawal of the blood from the body. This piston is reciprocated in the tube for withdrawing the blood from the vein into the tube. After each suction stroke of the piston, it is necessary to move the piston in the opposite direction and this will cause any air that is trapped in front of the piston, to be forced into the vein and this air will coagulate the blood. The coagulation of the blood interferes with the efiicient draining of the blood from the body.

The principal object of my invention is to provide a booster embalming tube which makes use of a piston that will not only draw the blood from the vein during the suction stroke, but will instantly provide a passage through the piston on the return stroke of the piston. This will prevent any air being trapped in advance of the piston on the return stroke and being forced into the blood. The result is that the blood can not become coagulated because no air is forced into the vein. The mere reciprocation of the piston will cause the parts forming the piston to coact to produce a suction when the piston is moved on its suction stroke, and to instantly open a bypass through the piston when it is moved in the opposite direction.

The parts forming the piston also perform the additional function of removing any coagulated blood from the vein. It frequently happens that portions of the blood in a body are coagulated,

especially where the person has been placed under ether while living. With my improved piston, the forming of a by-pass through the piston on the return stroke will permit the coagulated blood to enter the by-pass. Thereciprocation of the piston will cause it to work the coagulated portion of the blood through the by-pass.

A further object of my invention is to provide a device of the type described in which an auxiliary passage leads from the tube at a point in back of the main discharge passage and this auxiliary passage will permit any fluid trapped in back of the piston on its suction stroke to pass from the tube through the auxiliary passage to the main discharge passage. This will prevent the trapped fluid from exerting sufli'cient force at the rear of the tube for blowing out the packing. The tube may be formed in various shapes and sizes and it is possible to either insert the tube itself into the vein or to attach a rubber hose to the tube and then insert the hose in the vein.

The invention is extremely simple in construction and is durable and efficient for the purpose intended. t5

Other objects and advantages will appear in the following specification, and the novel features of the device will be particularly pointed out in the appended claims.

My invention is illustrated in the accompany- I 0 ing drawing forming a part of this application, in which Figure 1 is a longitudinal section through the device;

Figure 2 isjan enlarged detailed section of the L15 piston and tube; and

Figure 3 is a side elevation of the device.

In carrying out my invention I provide a tube I that is cylindrical in shape and has a rounded end 2 provided with an entrance opening 3. Additional openings 4 are provided in the wall of the tube near the entrance opening 3. The tube has a discharge passage 5 communicating therewith at 6 and an auxiliary passage 1 communicating with the tube at 8 and with the discharge passage 5 at 9. The discharge passage 5 has a flexible hose I0 connected thereto in any manner desired.

The rear end of the tube I is provided with a packing gland indicated generally at II. A piston rod I2 is slidably mounted in the packing gland II and extends into the tube I. The rod I2 has a head I3 at one end and a handle I4 at its other end. An adjustable stop I5 is mounted. on the rod.

The head I3 forms one part of a piston indicated generally at I6. The other part of the piston comprises a sleeve I! that slides in the tube I. The-sleeve I! has a cutting edge I8 that also acts as a seat for receiving a rounded por tion I9 of the head I3 and when the head I3 is seated on the sleeve, as shown in Figure 2, the head will act as a valve for closing the opening or passageway 20 in the sleeve. A stop 2! is mounted on the rod I2 and permits relative movement between the head I3 and the sleeve I'I.

From the foregoing description of the various parts of the device, the operation thereof may be readily understood.

In embalming a body, a vein is out and the tube I is inserted in the vein, while a tube, not shown, is connected to the artery and conveys a fluid by gravity into the artery as the blood is withdrawn from the vein. This fluid will, upon entering the artery, flow through the entire body vISO and will force the fluid from the body into the tube I. In order to aid this flow of blood into the tube I, it is necessary to reciprocate the piston I6.

During the suction stroke of the piston I6, the head I3 will be moved to the left in Figure 1, until it seats in the sleeve I! as shown in Figure 2. The head I3 and sleeve U will now constitute a piston that will create a suction for withdrawing blood from the vein while the rod I2 is moved to the left in Figure 1. After the piston has completed its suction stroke the return stroke is commenced and this return stroke will immediately separate the head I3 from the sleeve I I because the head will be moved by the rod I2 while the sleeve I'I will remain stationary in the tube I. This will cause the rounded portion I9 of the head to be freed from the seat 'I 8 with the result that the passage in the piston will be opened. Further movement of the rod I2 in thedirection to the right in Figure -1 will cause the stop :21 to contact with the sleeve I1 and move the sleeve therewith. It will be seen, however, that the -by-pass 20 through the piston is kept open during the entire return stroke. It will therefore be impossible for the piston to trap any air during the return stroke and to force this air into the blood. The piston will therefore not cause any=coagulation of the blood durin its return stroke.

Upon the next suction stroke. the sleeve I! will again remain stationary in the tube until the head I3 again seats and closes the by-pass 28. Should any coagulated blood be encountered during the reciprocation of the piston, this 'coagulated blood will find its way into the passage- 25 during the movement of the piston to the right in Figure 1 and then a movement of the piston in the opposite direction will cause the head I3 and the sleeve H to gripthe coagulated portion of the blood and to move it along the tube toward the discharge passage 5.

A return movement of the piston will cause the head I3 and the sleeve IT to instantly release their hold on the coagulated portion and again engage with the coagulated portion at a new place when the piston again starts on its next suction stroke. In this waythecoagulated portion of blood is gripped =at successive places and is moved through the :piston and tube and into the discharge passagei.

Should any fluid be trapped in back of the piston during its suction stroke after the piston has passed the opening 6, then this fluid will flow into the auxiliary passage I instead of being forced against the packing gland II. This arrangement protects the packing gland from being blown out. The head I3 may be likened to a valve, that on the so-called pressure stroke of the piston I6, becomes unseated and on the suction stroke, again becomes seated.

The purpose of the booster embalming tube is not only to withdraw blood from the vein, but also to simulate the heart action of the body.

The reciprocation of the :piston I! will give to the blood stream an impulse somewhat the same as that caused by a heartbeat, and this will permit the blood to flow through the veins and into the tube I more readily. The valve head 53 cooperating with the sleeve .I'I not only moves a clot of blood through the passage 20, but has a shearing action on the blood that tends to cut the clot into small parts which will more readily flow through the passage 20 and into the discharge passage 5. The sleeve I1 in moving past the openings 4 also has a shearing action on any blood clots that might be passing through the openings 4. This will prevent the blood clots from clogging the openings 4. The endZ of the tube I .is rounded in order to enter a vein with.- out' puncturing it. The openings 4 permit a greater quantity of blood to enter the tube.

While I have shown only the preferred form of my invention, it should be understood. that various changes or modifications may be made within the scope of the appended claims without departing from the spirit of the invention.

I claim:

1. A booster emblaming tube having an inlet at one end, an outlet pipe spaced from the other end, a packing gland closing the end of the tube disposed close to the outlet pipe, a piston rod slidable in the tube and packing gland, a :piston mounted on the rod and being slidabl-e in the tube, and an auxiliary pipe-leading from thetube at a point adjacent to the packing gland and communicating with the outlet pipe.

-2. A booster embalming tube comprising-a cylindrical member having an entrance opening at one end, a discharge passage communicating with the tube adjacent to the other end, a'piston =rod slidable in the tube, a head secured to the annular edge of the piston when striking the head aiding in breaking up and feeding any blood clot through the member.

3. In a device of the type described, a cylindrical member, a sleeve slidably mounted in the member, a piston rod extending through the sleeve, a head carried by the rod and forming a seal with the sleeve during the suction stroke, and a. stop carried by the rod and engaging with the sleeve to move it on the return stroke and after the head has separated. from the sleeve, said sleeve having-only an edge engageable with the head, whereby a cutting action will take .place between the sleeve edge and head for breaking up r any blood clots.

e. A booster embalming tube comprising a cylindrical member having-an entrance end, a discharge passage communicating with the other end of the member, a piston rod mounted in the member, a sleeve encircling the rod and being slidable in the member, a head mounted on the end of the rod and being movable on the suction stroke to close one end of the sleeve, a stop carried by the rod and engaging with the sleeve on the return stroke and after the sleeve has separated from the head, whereby an unobstructed annular opening is provided between the head and sleeve during the return stroke.

AMOS V. BOWMER.

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