MXPA98006410A - Auxiliary of inyecc - Google Patents

Abstract

The present invention relates to an injection aid for use for injecting material through the skin of a recipient penis with a needleless injector having an outlet end provided with an outlet orifice, which comprises means for receiving said outlet end and locating means to allow the receiving means to remain in a desired location on the skin during injection, wherein the locating means comprise a generally C-shaped ring adapted to partially surround the penis, free ends of the C-shaped ring being provided with handles for attachment by the fingers of a user

Description

AUXILIARY OF INJECTION This invention refers to an injection aid which is placed on the skin of a subject to be injected without a needle with a medication, in order to improve the precision to place the injector. The injection aid is particularly useful when it is important to put the injection in a very precise place on the skin, such as when injecting the penis to treat erectile dysfunction, or inject keloid scars to reduce them. Needleless injectors are used as an alternative to hypodermic needle syringes to deliver medications through the patient's skin to underlying tissues. Instead of piercing the skin with a hollow needle, a needleless injector employs a high-pressure piston pump to "ignite" a thin stream of liquid medication with enough force to puncture the skin and the remaining medication is injected through the hole well formed.

The technique was first used commercially in the '50s and is particularly pleasing to those who fear needles, called needlefish. More recently, there has been an interest in needleless injection since it eliminates needle picket injury, eliminates cross-contamination and is potentially superior to the injections administered. One application for needleless injectors is the treatment of erectile dysfunction. Not surprisingly, men suffer from a high incidence of fear of needles, since the normal treatment is to inject the medication with a 12 mm long needle directly into the corpus cavernosum. There have been recent attempts to inject with a needleless injector, but the injectors currently require considerable practice available to operate, and the injector placement requirements are critical. Is It is important that the injection does not touch any superficial blood vessel and the force of the mouthpiece on the skin should not be very high, since this could compress the tissues to an undesirable degree and possibly cause the jet of medication * pass through the corpus cavernosum. In the same way, the strength of the mouthpiece on the skin should not be very light or nonexistent, since this could result in waste of what is injected, contusion or rupture of the skin, bruising and poor therapeutic effect. The needleless injectors most currently available are very large, usually 160 mm long by 18 mm diameter and the supply hole in the nozzle is difficult to place with the required precision, since the surrounding structure obscures the injection site. Most injectors are operated by pressing the mouthpiece on the skin and by operating a release button that is usually placed on the end opposite of the injector of the nozzle: at the moment of pressing the release button of the injection invariably there is a jerk reaction of the injector body which can change the position of the nozzle at the time of injection. In addition, no means are provided to ensure that the optimal force of the mouthpiece to the skin is achieved before operating the injector and variable results are obtained.

The inventor of the present invention has the copending applications (v.gr,, PCT / G B94 / 01608) in which many of these problems are avoided by providing that the injector is operated in response to a predetermined force of the nozzle on the skin. However, with some applications such as erectile dysfunction treatment, the injection site is extraordinarily soft and mobile, requiring precise placement and also requires experience and care. * Another application for the nozzle injectors is the treatment of keloid scars, or raised scar tissue. In this case, a number of injections are made over the keloid area and it is important to place them carefully. Again, no devices of the present inventor are known to help improve precise placement. The present invention seeks to improve the needle-free needle placement precision providing a hollow raised protrusion, which preferably is integral with the "C". A small hole arranged concentrically within the protrusion extends through the flat material of the ring. To use the device it is placed on the penis with the small hole in the desired injection site and the handles are pressed together between the thumb and the index finger so that the penis is slightly compressed and the device is prevented from slipping. The protrusion is sized to locate the nozzle of the injector so that the hole in the nozzle touches the skin and the injector is placed inside. of the protrusion and pressed to the penis. The injector is supported by the ring and moderate variations in the pressing force will not cause the penis to be depressed. The injector is then operated to cause injection. In a second preferred embodiment, a location protrusion is provided as previously described, which is surrounded by a flange which can be flexible. The flange has an adhesive on one side by which it can be placed at the injection site and temporarily retained. The adhesive may have a removable backing to protect it during storage. In both preferred embodiments, a small hole is used to center the device at the desired injection site: the acuity of the Vernier's eye is very good and placement within a one-millimeter of the desired injection site is easily achieved. The invention will now be described with reference to the accompanying drawings, in which: Figures 1 a, 1 b, 1 c show a ring-shaped injection aid, Figure b being a projection of figure 1 a, and Figure 1 c being an elongated cross section of the location protrusion with the nozzle of the injector therein; Figure 2 is a cross section of a penis with the ring-shaped injection aid in place; Figure 3 is a general view of the injection aid of the preceding Figures in use; and Figure 4a, 4b, 4c are views of an injection aid with reinforced adhesive. Referring to Figures 1a and 1b, a flexible, resilient "C" 1 ring of flat material with finger handles 8 is provided at each open end. A circular hollow protrusion 2 is mounted on the ring 1 approximately opposite the space of the two handles. In the center of the protrusion 2, there is a hole 3, which extends through the ring 1 and can be about 5 mm in diameter. Figure 1c is a cross section in parts through the hollow protuberance 2, with a needleless injector 4 located therein so that its nozzle 5 touches the skin 7 of the penis. A thin, thin insulating layer 6 can be attached to the inside of the "C" 1 ring for comfort. Figure 2 is a cross section through the penis 9, with the injection aid applied and the injector 4 located within the protrusion 2. A force G is applied by hand to the handles 8 to gently compress the penis and force F on the injector 4 is resisted by the injection aid being supported by the hand holding the handles 8. This is fully illustrated in Figure 3. Figures 4a, 4b and 4c are views of an injection aid 101 for more general use. A hollow protrusion 102 and small hole 102 are integral with a flange 112. The flange 112 may be flexible and there may be radial grooves therein (not shown) to increase flexibility. On the underside of the tab 112 is an adhesive layer 113, which can also be insulated for comfort. The adhesive layer may have a removable protective film 14 as shown in Figure 4c. to use the device, the film 14 is detached from the adhesive, the hole 103 is placed over the desired injection site and the flange 112 is pressed on the skin to temporarily retain the device. The injector is then placed inside the hollow protrusion 102 and the injection is performed as previously described. In all the above examples, the precise details of the hollow protrusion will vary according to the nozzle of the injector and the operating characteristics of the injector.

Claims (3)

1. REVIVAL NAME IS 1. An injection aid for use for injecting material through the skin of a recipient penis with a needleless injector having an outlet end provided with a needle orifice. 5 outlet, which comprises means for receiving said outlet end and locating means for allowing the receiving means to remain in a desired location on the skin during injection, wherein the locating means comprise a ring # generally C-shaped adapted to partially surround the penis, the free ends of the C-shaped ring being provided with handles for engagement by the fingers of a user. An injection aid according to claim 1, wherein the receiving means comprises a protrusion surrounding an orifice providing access to the skin of the recipient. 15 3. An injection aid according to the claim 1 or 2, where the receiving means are integral with the C-shaped ring. RESU MEN An injection aid is provided to be used to inject material through the skin of a receiver at a precisely defined point. The injection aid has a protuberance or the like, which receives the outlet end of the injector. The injection aid remains in the desired location on the skin. In one modality, designed to be used for the purpose of treating erectile dysfunction, this is achieved by a C-shaped ring, and in another modality this is achieved by a flange coated with adhesive.