DE2240694A1 - SYRINGE FOR INTRAVENOESIS OR INTRAMUSCULAR INJECTION - Google Patents

Description

The applicant is:

Rene Derouineau
Moulin de PeIissey '
33170 Gradignan

Λ;

Intravenous or intramuscular injection syringe '

The invention relates to a motorized, portable syringe which is used for intravenous or intramuscular Injection of drugs can be used.

It is known that very powerful drugs are now used in modern practices of therapeutic injection which are injected extremely slowly and undiluted Need to become. These drugs are generally administered in small doses. Current practice sees that Use of fixed, motorized syringes which have the disadvantage that the patient becomes immobile for several hours and in certain cases even constantly is condemned.

It is also a known fact that the patient, for example, under the influence of pain or ·. Pieber

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or when bending arms or legs Move and shift the end of the needle inserted into the muscle, sometimes causing the needle to emerge can; this means a loss of the very expensive and precious drugs and sometimes even leads to extreme dangerous hemorrhages.

The present invention has a motorized » portable syringe to the object, which can be attached to the arm or thigh and thus the patient gives the opportunity to move around and even do one's chores while him over a period of time the injection is given very slowly.

A feature of the invention is that a base is provided on which a battery, one behind the other, is provided Micromotor for feeding a special ampoule and a catheter with a tube for insertion into the vein are arranged.

Another inventive feature is seen in that that the base is provided with two or more slots, through which straps or known under the name "Velcro" Straps for securing the syringe can be passed through.

Another feature of the invention is the provision of an ampoule with a holder which is clamped onto the base can be; This single-use ampoule can be commercially filled with the drug in question supplied with a suitable catheter, the whole thing under vacuum for prophylactic reasons sterilized

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Yet another feature according to the invention is the design of the ampoule piston with a force-fit connection provided element, the center of which is provided with a thread and receives a screw driven by the micromotor. This element has on its outside a longitudinal groove with a surface line, in which a fixed crouch the ampoule holder rests in such a way that, by turning the screw, the plunger moves in a straight line he follows.

Another feature of the invention is that the injection time taking into account the contents of the ampoule by changing either the speed of the micromotor by means of a control resistor or the division of the Drive of the ampoule piston serving screw is controlled.

It is clear that cancer patients, diabetics and other patients in whom because of the strength of the injectable Medication a slow injection is required, yourself with the motorized drive according to the invention, portable syringe and even go about their normal tasks without causing them to become immobile are condemned, which is extremely unpleasant.

Further features and advantages of the present invention are intended and not intended as an example from the following in the restrictive sense of the description and can be seen from the drawing, the schematic representation of an embodiment of a motorized drive equipped, portable syringe shows. In the drawing are »

Fig. 1 - a sectional plan view along the longitudinal axis the syringe;

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FIG. 2 is a side view corresponding to FIG. 1;

Fig. 3 - a sectional view along the axis III-III according to Figure 2; and

4 - a sectional view along the axis IV-IV according to Figure 2.

The base 1 of the syringe has slots 2 and 3 for implementation provided straps, not shown, with which the syringe is attached to the patient's body. One battery 7 is located in a seat 4 »while a micromotor 8 is seated in a bearing arrangement 5, the front The end of an ampoule 9 is fitted into a holder 6. At 10, the seat for the contactor 11 is provided with the associated return spring 12. A knurled button 13, the is screwed onto the body 7 for actuating the contactor 11, is connected to the micromotor 8 through a wire conductor 14 in connection. The center contact 15 of the battery is connected to the other oil of the micromotor 8 by a wire conductor 16 connected.

On the micromotor 8, a knurled knob 17 is provided to the To ensure fitting and engagement of a guide member 18 with the ampoule 9. A knurled ring 19 with eccentric axis is used to fix the micromotor in its bearing arrangement 5 · The drive element 20 of the Piston 21 of the ampoule 9 receives in its center a screw 22 with a semi-flat element 23, which is connected to the guide part 18 of the micromotor 8 comes into engagement. A longitudinal groove 24 is in the drive element 20 for receiving the Cam screw 25 is formed, which sits in the holder 26 of the ampoule 9, this holder by means of the axis is clamped onto the base 1. The spout 28 of the catheter 29 is placed on the end of the ampoule 9. The one from the

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Holder 26, the drive element 20, the ampoule 9 and the The unit formed by the catheter 29 is delivered in a vacuum-sterilized state for prophylactic reasons «,

It is evident that after pushing back the Micromotor 8 to the left causes its deactivation. The empty ampoule 9 is removed and a new ampoule inserted by clamping it with its axis 27 onto the base 1 and inserting it with the end into the fitting 6 will. The micromotor 8 is until the engagement of the guide part 18 with the semi-flat element 23 of the ampoule 9 pushed back to the right, with the in the form of a eccentric ring formed button 19 screwed and the syringe on the patient's body by means of the. Slots 2, 3 through straps (not shown) are attached. To turn on the micromotor 8 of the Syringe for the purpose of injection, the knurled knob 13 is turned inwards.

A protective cover, not shown, is used for the syringe components intended.

It is assumed that the invention is only to be considered as an example in a non-restrictive sense is described and shown and that detailed modifications are possible without departing from the scope of the invention will. For example, a further slot can be provided in the base 1 in order to attach a third strap the syringe on the patient's hip. In addition, the variable resistor can be arranged on the base 1 to change the speed of the micromotor 8 as desired,

Claims: -. 6 -

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Claims (4)

PATENT CLAIMS l./Motor-driven portable intravenous syringe or intramuscular injection of drugs, characterized in that it comprises a syringe, which is driven by a micromotor mounted on a base, the base with slots for Implementation of straps for fastening the syringe to the patient's body is provided. 2. Motorized portable syringe according to claim 1, characterized in that it comprises an in-line Includes battery for supplying the micromotor to drive a screw, which is in a frictional connection with the piston of the syringe connected to the cylindrical element moves, this element being provided with a longitudinal groove is whose surface line is guided by a cam carried by the holder of the syringe so that every turning movement of the screw causes a longitudinal displacement of the plunger of the syringe. 3. Motorized portable syringe according to the claims 1 and 2, characterized in that the actual syringe intended for single use a bracket is arranged, which is clamped onto the oockel can be made for easy insertion and removal of the syringe by simply separating it from the kikroniotor by withdrawing it. 4. Motorized portable syringe according to any one of claims 1, 2 and 3 »characterized in that that the speed of the micromotor depends on the Amount of liquid to be injected and the injection dose can be regulated by means of a rheostat. 309809/0843