Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1995-01-09
1996-08-27
Green, Randall L.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604140, 604 57, 604 49, A61M 520
Patent
active
055495605
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a method and a device for injecting humans and animals with a pharmaceutical preparation.
Both this method and this device are generally known. Use is made herein of a syringe which is filled with the pharmaceutical preparation in liquid form, whereafter by means of a piston received in the syringe the liquid preparation is injected into the body through a needle pushed through the skin.
This method is used both with humans and with animals.
This method is however beset with the danger that the needle, after being inserted into the body, is contaminated by micro-organisms or viruses present in that body which pass onto the needle of the syringe. When the same needle is used for injecting a following body there is therefore the danger of the following body being contaminated.
While in the case of human applications it is usual to use syringes and needles for once-only use, this does result in cost increases and excessive environmental impact, particularly in the case of prophylactic inoculation on a large scale. This is the case for both human and veterinary applications.
Known from U.S. Pat. No. 4,771,757 is a method wherein the preparation is received in a rigid carrier and wherein the carrier is carried through the skin into the body by means of gas pressure.
In this method only the carrier with the pharmaceutical preparation penetrates into the body for injecting so that no instruments or parts thereof penetrate into and are removed from the body for injecting so that the resulting risk of infection is reduced.
This method moreover results in a great speed, which is particularly important when a large number of humans or animals must be injected.
This known method has the drawback that it is only suitable for injecting animals from a distance. This leads to dangerous situations, since the kinetic energy of a "fired" carrier is so great that it can easily cause serious injury.
Another drawback lies in the fact that the accuracy of the location at which the carrier enters the body is low, so that there is a great chance of the carrier entering the body at a less suitable position. Moreover, the kinetic energy of the carrier when it enters the body is strongly dependent on the distance between body and device. At a great distance there is indeed no longer any guarantee that the position of the carrier is still axial when it enters the body; the risk of injury is therefore great.
The invention therefore provides a method which is characterized in that during carrying of a rigid carrier into the body by means of gas pressure the device with which the carrier is carried into the body is held against the body.
Use is made herein of a device which is provided with a chamber in which a carrier containing the pharmaceutical preparation can be placed, a barrel connecting onto this chamber and means for carrying the carrier by means of gas pressure through the barrel into the body for injecting, characterized by means for blocking the use of the device when it is not pressed against a body.
It is noted here that it is known to introduce pharmaceutical preparations in the form of a carrier into the body, wherein in general these pharmaceutical preparations release their pharmaceutically active substance slowly. In this known method these carriers are arranged surgically in the body, which of course entails high costs. These surgically arranged carriers often leave behind a remnant which must be removed, once again surgically, or which result in the occurrence of abscesses or infections.
The present invention will be elucidated hereinbelow with reference to the annexed figures, in which:
FIG. 1 shows a partly broken away perspective view of a device according to the invention;
FIG. 2 shows a partly broken away detail view of the device depicted in FIG. 1;
FIG. 3 is a detail view broken away in another manner of the device depicted in FIG. 1; and
FIG. 4 is a perspective view of a carrier for use in the method according to the invention.
The device depicted in FIG. 1 is formed by a barr
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Section Ch, Week 8315, Derwent Publications Ltd., Londen, GB; Class B07, AN 83-36278K & S U,A,933 101 (Timoshin), dated Dec. 30, 1977.
Green Randall L.
Van Over Perry E.
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