DK170742B1 - Electromechanical drive unit for a single-stroke plunger syringe - Google Patents
Electromechanical drive unit for a single-stroke plunger syringe Download PDFInfo
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- DK170742B1 DK170742B1 DK080188A DK80188A DK170742B1 DK 170742 B1 DK170742 B1 DK 170742B1 DK 080188 A DK080188 A DK 080188A DK 80188 A DK80188 A DK 80188A DK 170742 B1 DK170742 B1 DK 170742B1
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- carriage
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- endless screw
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- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims 1
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- 239000003814 drug Substances 0.000 description 7
- 229940079593 drug Drugs 0.000 description 7
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 230000010412 perfusion Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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- 230000002927 anti-mitotic effect Effects 0.000 description 1
- 229940088710 antibiotic agent Drugs 0.000 description 1
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- 210000004207 dermis Anatomy 0.000 description 1
- 206010012601 diabetes mellitus Diseases 0.000 description 1
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- 239000002657 fibrous material Substances 0.000 description 1
- 229940088597 hormone Drugs 0.000 description 1
- 239000005556 hormone Substances 0.000 description 1
- 230000004941 influx Effects 0.000 description 1
- 238000001361 intraarterial administration Methods 0.000 description 1
- 238000010253 intravenous injection Methods 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
- A61M5/1456—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons with a replaceable reservoir comprising a piston rod to be moved into the reservoir, e.g. the piston rod is part of the removable reservoir
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/172—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body electrical or electronic
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- External Artificial Organs (AREA)
Description
DK 170742 B1 iDK 170742 B1 i
Opfindelsen angår et elektromekanisk drivaggregat til en enkeltslagsstempelsprøjte, hvilket drivaggregat er af den art, der er angivet i krav l's indledning.The invention relates to an electromechanical drive assembly for a single stroke piston syringe, which drive assembly is of the kind set forth in the preamble of claim 1.
Styringen af udløbsmængden ved injektioner, hvad enten de er 5 intravenøse, intravaskulære eller subkutane med det eksisterende udstyr til engangsbrug, er vilkårlige selv i hænderne på en trænet operatør. Dette er i endnu højere grad sandt, når der fra samme sprøjte skal afgives flere enhedsvolumener enten fordelt i tid eller fordelt på flere forskellige 10 steder. Hvad enten det er et spørgsmål om en kontinuert eller en diskontinuert mængde, kan styringen kun sikres ved at styre forskydningen af stemplet i sprøjten. Dette er årsagen til, at der er blevet foreslået adskillelige apparater til en indirekte forskydning i reglen ved hjælp af en skrue eller en 15 tandstang, hvis bevægelse styres enten ved direkte aflæsning eller bedre ved en servostyring, og hvad enten denne mekanisme drives direkte af operatøren, som beskrevet i FR Al 2.583.291, eller ved hjælp af en generel og elektrisk servo-mekanisme.The control of the flow rate by injections, whether intravenous, intravascular or subcutaneous with the existing disposable equipment, is arbitrary even in the hands of a trained operator. This is even more true when multiple unit volumes are to be delivered from the same syringe either distributed in time or distributed in several different 10 locations. Whether a continuous or a discontinuous quantity, the control can only be ensured by controlling the displacement of the plunger in the syringe. This is why numerous devices have been proposed for indirect displacement as a rule by means of a screw or a rack, the movement of which is controlled either by direct reading or better by a power steering, and whether this mechanism is operated directly by the operator , as described in FR Al 2,583,291, or by means of a general and electric servo mechanism.
20 Nytten af sådanne apparater er særlig tydelig til såkaldte langvarige medicinske behandlinger, som f.eks. gentagne indgivelser af mediciner, som f.eks. antimitotika, antibiotika, hormoner, hvis man ikke ønsker at mangedoble antallet af injektioner og de deraf følgende punkteringer af huden.The utility of such devices is particularly evident in so-called long-term medical treatments, such as e.g. repeated administration of medications, e.g. antimitotics, antibiotics, hormones if you do not want to multiply the number of injections and the resulting punctures of the skin.
25 Ved den nuværende form for indgivelse af sådanne medikamenter, tyr man ofte til gentagne intravenøse indsprøjtninger.25 In the present form of administration of such drugs, repeated intravenous injections are often resorted to.
Til dette formål oprettes ofte en venøs tilstrømning ved hjælp af tyngdekraften i form af et kateter eller en intra-vaskulær kanyle, som er permanent forbundet til et rør for-30 synet med strømstyrende organer, og hvori der gentagne gange indsprøjtes medicinen eller mediciner i en zone, som kan perforeres og er selvlukkende på stedet. Denne teknik, hvis eneste formål er at forhindre obturation (tilstopning) af kateteret ved koagulering af blodet, har flere ulemper, specielt ved flytning af patienten.To this end, a venous influx is often created by gravity in the form of a catheter or intra-vascular cannula, which is permanently connected to a tube provided with flow control organs and in which the drug or drugs are repeatedly injected into a catheter. zone, which can be perforated and self-closing on site. This technique, whose sole purpose is to prevent the obturation (clogging) of the catheter by coagulation of the blood, has several disadvantages, especially when moving the patient.
2 DK 170742 B12 DK 170742 B1
Opretholdelsen af en konstant trykgradient mellem perfusions-flasken og det vaskulære system er tilfældig - endog umulig, hvilket medfører, at blod strømmer tilbage i røret og frem-5 bringer en utidig koagulering og gør det næsten umuligt at opretholde en tilstrækkelig perfusionsstrømningshastighed.Maintaining a constant pressure gradient between the perfusion flask and the vascular system is accidental - even impossible, causing blood to flow back into the tube and causing premature coagulation and making it nearly impossible to maintain a sufficient perfusion flow rate.
Yderligere er de mængder af opløsning, som er nødvendige for at opretholde kateteret, store, hvilket ikke er uden ulemper som følge af de vandige overbelastninger eller af de opløste 10 stoffer, som er indeholdt i opløsningen (diabetes).Further, the amounts of solution needed to maintain the catheter are large, which is not without disadvantage due to the aqueous overloads or of the dissolved substances contained in the solution (diabetes).
I nærværende opfindelse vælger man at erstatte den trykgenerator, som udgøres af en flaske, der er ophængt i tyngdefeltet med en mængdegenerator, som udgøres af et variabelt rumfang, dvs. en sprøjte. Denne mængdegenerator tillader i 15 modsætning til trykgeneratoren intra-arterielle injektioner og en bedre styring af de subkutane og intradermiske perfusioner, dvs. når som helst det modtryk, som udvikles på injektionsstedet, er højt eller umuligt at kontrollere.In the present invention, one chooses to replace the pressure generator constituted by a bottle suspended in the gravity field with a quantity generator constituted by a variable volume, ie. a syringe. This amount generator, in contrast to the pressure generator, allows intra-arterial injections and better control of the subcutaneous and intradermal perfusions, ie. at any time the back pressure developed at the injection site is high or impossible to control.
Der har været foreslået adskillige automatiske sprøjtedriv-20 apparater, som f.eks. dem der er beskrevet i GB patentskrift 1.595.972, US patentskrift 3.858.581 og US patentskrift 4.435.173. De består af en stempeldrivmekanisme, der er sammensat af en motor, en endeløs skrue, som roterer på lejer, en slæde, der kan frigøres fra den endeløse skrue og 25 tillade en manuel tilbageføring. Den endeløse skrue og slæden er helt eller delvis synlige. Huset omfatter et organ til at fastholde sprøjten ved en fastlåsning. En styring af mængden blev opnået i de første udførelsesformer ved at styre motorens vinkelhastighed.Several automatic syringe drive devices have been proposed, such as e.g. those described in GB patent 1,595,972, US patent 3,858,581 and US patent 4,435,173. They consist of a piston drive mechanism composed of a motor, an endless screw rotating on bearings, a slide that can be released from the endless screw, and allowing a manual return. The endless screw and carriage are fully or partially visible. The housing comprises a means for holding the syringe in a locking position. Controlling the amount was achieved in the first embodiments by controlling the angular speed of the motor.
30 Senere og for at udvide det område af mængder, som det var muligt at opnå, foretrak man en diskontinuert funktion for motoren, idet middelvinkelhastigheden derefter kunne variere 3 DK 170742 B1 fra 1 til 100. Dette resultat blev opnået med en DC-motor, hvis rotation sættes i gang af et ur, og som afsluttes af en knast, som er mekanisk fast forbundet til den endeløse skrue, og som virker direkte på en kontaktor. For så vidt som rela-5 xationsperioderne er korte i forhold til halveringstiden for den indsprøjtede medicin, vil variationerne i systemiske koncentrationer af medicinen kunne negligeres. Den totale varighed for tømningen af sprøjten er en variabel, som afhænger af det nominelle rumfang af sprøjten, den ønskede 10 middelmængde og af koncentrationen af det aktive produkt i den indsprøjtede opløsning.Later, and to extend the range of quantities obtainable, a discontinuous function of the motor was preferred, the mean angular velocity then being able to vary from 1 to 100. This result was obtained with a DC motor, the rotation of which is initiated by a clock and terminated by a cam which is mechanically fixed to the endless screw and acts directly on a contactor. Insofar as the relaxation periods are short relative to the half-life of the injected drug, the variations in systemic concentrations of the drug may be neglected. The total duration of emptying the syringe is a variable which depends on the nominal volume of the syringe, the desired average amount and the concentration of the active product in the injected solution.
Formålet med opfindelsen er at opnå en betydelig kompakthed og miniaturisering af det indledningsvis nævnte, kendte apparat. Dette opnås ved at indrette apparatet som angivet i 15 krav l's kendetegnende del.The object of the invention is to obtain a considerable compactness and miniaturization of the prior art apparatus mentioned earlier. This is achieved by arranging the apparatus as set forth in the characterizing portion of claim 1.
I den nærværende opfindelse har det vist sig, at hele det elektromekaniske system til fremføring af stemplet kunne placeres indvendigt i en styrekappe, som tjener som et afstandsstykke for de to sideflader af et hus, som følgelig er til-20 strækkeligt til at holde sprøjten uden tilføjelse af et særligt holdeorgan. Middelmængden fås ved afgivelse af et fast antal rumfangsenheder eller portioner (boli), som indsprøjtes ved hver periode i en forudbestemt samlet tidslængde, der er valgt således, at den er sammenfaldende med døgnet.In the present invention, it has been found that the entire electromechanical system for conveying the plunger could be positioned internally in a guide sheath which serves as a spacer for the two side faces of a housing which is consequently sufficient to hold the syringe without addition of a special holding means. The average amount is obtained by delivering a fixed number of volume units or portions (boli) injected at each period for a predetermined total length of time selected so as to coincide with the day.
25 Opfindelsen skal i det følgende forklares nærmere ud fra et ikke begrænsende eksempel, der beskriver et sprøjtedrivappa-rat med konstante enhedsvolumener, programmeret efter et ur og især indrettet til forsyning af intravenøse katetere ved ambulant behandling.The invention will now be explained in more detail from a non-limiting example describing a syringe driver with constant unit volumes, programmed according to a clock and particularly adapted for the supply of intravenous catheters by outpatient treatment.
30 Forklaringen sker under henvisning til tegningen, hvor fig. 1 og 2 viser, set under to forskellige vinkler og for fig. 2's vedkommende delvis i snit, et sprøjtedrivaggregat DK 170742 Bl 4 med en kasse udformet som parallelepipedum, fig. 3 et sprøjtedrivaggregat, hvor kassen er forsynet med et pistolgreb, fig. 4 et elektromekanisk drivsystem i et sprøjtedrivaggre-5 gat, og fig. 5 -7 diagrammer vedrørende en elektronisk styreenhed i et sprøjtedrivaggregat.The explanation is made with reference to the drawing, in which fig. 1 and 2 show, taken from two different angles and for fig. 2 partly in section, a syringe drive assembly DK 170742 B1 4 with a box designed as a parallelepipedum; 3 is a syringe drive assembly wherein the box is provided with a pistol grip; FIG. 4 shows an electromechanical drive system in a syringe drive assembly; and FIG. 5 -7 diagrams concerning an electronic controller in a syringe drive assembly.
Apparatet er sammensat af selve sprøjtedrivmekanismen og af en elektronisk programmeringsenhed, som strømforsynes uafhæn-10 gigt af netspændingen. Det i fig. 4 viste sprøjtedrivapparat er sammensat af en gearet motor 2-1, som med fordel kan udgøres af en jævnstrømsmotor 2 med en rotor, der er jernfri, har lille inerti og roterer ved magnetisering med en permanent magnet og med et reduktionsgear 1 med en høj virknings-15 grad og en koaksial udgangsaksel, hvorpå den endeløse skrue 3 er direkte fastgjort med en stiv bøsning. Den gearede motor 2,1 er fastgjort ved enden ved udgangsakslen ved hjælp af et elastisk materiale 4, som tillader den såvel som den endeløse skrue 3 at flyde let indvendig i styrekappen 5 for at 20 afhjælpe de uundgåelige mangler ved aggregatets opretning eller linearitet, idet den endeløse skrue 3 er uden enhver form for understøtning. Den endeløse skrue 3 kan rotere i begge retninger i en gevindskåren slæde 6, der bærer en stempelstang 7 og en magnet 8, der virker på kontaktorer og/eller 25 omskiftere (eng.: inverters) uden for styrekappen 5. Den endeløse skrue 3 bærer endvidere en drejelig magnet 9, som virker på en anden kontaktor 10, der er følsom for magnetismen og er placeret uden for styrekappen 5. Styring af slæden 6 effektueres af selve styrekappen 5, som til dette formål er 30 udformet med en profil som et polyeder, som er kongruent med tværsnittet af slæden 6. Oversiden af styrekappen 5 er forsynet med en fræsning (forsænkning), som stempelstangen 7 kan passere gennem.The apparatus is composed of the syringe drive mechanism itself and of an electronic programming unit which is independently supplied by the mains voltage. The FIG. 4 is a geared motor 2-1 which can advantageously comprise a DC motor 2 with a rotor which is free of iron, has little inertia and rotates by magnetization with a permanent magnet and with a reduction gear 1 with a high power -15 degree and a coaxial output shaft onto which the endless screw 3 is directly secured with a rigid bush. The geared motor 2.1 is secured at the end of the output shaft by an elastic material 4 which allows it as well as the endless screw 3 to flow easily inside the guide sheath 5 to remedy the inevitable shortcomings of the alignment or linearity of the assembly. the endless screw 3 is devoid of any support. The endless screw 3 can rotate in both directions in a threaded carriage 6 carrying a piston rod 7 and a magnet 8 acting on contactors and / or 25 inverters outside the control cap 5. The endless screw 3 carries further, a rotatable magnet 9 acting on another contactor 10 which is sensitive to the magnetism and located outside the control sheath 5. Control of the carriage 6 is effected by the control sheath 5 itself, which for this purpose is formed with a profile as a polyhedron which is congruent with the cross-section of the carriage 6. The top of the guide sheath 5 is provided with a milling (recess) through which the piston rod 7 can pass.
5 DK 170742 B15 DK 170742 B1
Et elastisk tæppe 11 beskytter den endeløse skrue 3 og dens slæde 6, der samarbejder i det næsten tætte ledehylster 5. Tæppet 11 kan med fordel være fremstillet af et vandtæt fibermateriale, f.eks. en tekstilfilt, der er tætnet med en 5 lille plade 13, der er skruet fast imod styrekappen 5. Undersiden af styrekappen 5 udgør en understøtning og en beskyttelse for det elektroniske aggregat 45, som er omtalt i det foregående, og for batteriforsyningen.An elastic blanket 11 protects the endless screw 3 and its carriage 6, which cooperate in the nearly dense guide sleeve 5. The blanket 11 may advantageously be made of a waterproof fibrous material, e.g. a textile blanket sealed with a small plate 13 screwed against the guide sheath 5. The underside of the guide sheath 5 provides a support and protection for the electronic assembly 45 referred to above and for the battery supply.
Huset (fig. 1 og 2) er opbygget omkring styrekappen 5, som 10 udgør en forstærkning af huset.The housing (Figures 1 and 2) is built around the guide sheath 5, which 10 constitutes a reinforcement of the housing.
Dette hus har form som et retvinklet parallelepipedum både indvendig og udvendig. Oversiden dannes direkte af oversiden af styrekappen 5. Bagsiden 26 kan fjernes og er alene om at bære apparatets styringer 14 og visningstavler 15. Dets side-15 flader er forlænget op over styrekappen 5 ved forlængelser i hele husets længde. Passende udformede danner disse forlængelser sprøjteholdergrebet 16, der har et trapezformet tværsnit i den forreste del af apparatet og i midterdelen de stempelbeskyttende sidevægge eller sikkerhedsskærme 17.This housing has the shape of a rectangular parallelepiped both inside and outside. The upper side is formed directly from the upper side of the control sheath 5. The rear side 26 can be removed and is solely for carrying the controls 14 and display boards 15. Its side-15 surfaces are extended upwards over the control sheath 5 by extensions throughout the length of the housing. Appropriately designed, these extensions form the syringe holder grip 16, which has a trapezoidal cross-section in the front portion of the apparatus and in the center portion the piston-protective side walls or safety screens 17.
20 To bånd 18, der ligger parallelt med styrekappen 5 og er skruet fast derpå gennem husets væg, forstærker det hele og forbedrer elasticiteten og soliditeten af sprøjteholdergrebet 16. På denne måde opnås et særligt let og kompakt hus, som kan fremstilles af simple og billige midler, og hvori ind-25 førelsen af den elektromekaniske (fig. 4) og elektroniske enhed og bagpladen 26 er særdeles let og hurtig.Two strips 18, parallel to the guide sheath 5 and screwed thereto through the wall of the housing, reinforce the whole and enhance the elasticity and solidity of the syringe holder grip 16. In this way, a particularly light and compact housing is obtained, which can be made of simple and inexpensive means, and wherein the introduction of the electromechanical (Fig. 4) and electronic unit and the backing plate 26 is extremely easy and fast.
Apparatet, der har form som et retvinkelt parallelepipedum, er på grund af sin simple geometriske form og den fortræffelige beskyttelse af sprøjten 19 ved hjælp af kassens forlæn-30 gelser og af mekanismen ved hjælp af styrekappen 5, særdeles velegnet til ambulant behandling f.eks. således, at apparatet bæres i en lomme i patientens klæder eller fastgøres med en lille sele.The apparatus having the shape of a rectangular parallelepiped is particularly suitable for outpatient treatment due to its simple geometric shape and the excellent protection of the syringe 19 by means of the box extensions and of the mechanism by the control cap 5. . so that the apparatus is carried in a pocket in the patient's clothing or fastened with a small harness.
6 DK 170742 B1 I det følgende beskrives to principielt forskellige logiske metoder, som ikke skal begrænse opfindelsens rækkevidde.6 DK 170742 B1 The following are described in principle two different logical methods which are not intended to limit the scope of the invention.
Sprøjtedrivapparatet med ur, som afgiver boli, nærmere betegnet beregnet til at bevare permeabiliteten af intravaskulære 5 katetre og/eller til indsprøjtning af medikamenter, er i almindelighed indeholdt i et hus udformet som et parallelepipe-dum, se fig. 1 og 2, som allerede er beskrevet.The watchdog dispensing device, which is designed specifically to preserve the permeability of intravascular catheters and / or to inject drugs, is generally contained in a housing designed as a parallel tube, see FIG. 1 and 2 already described.
F.eks. kan den logik, der vælges til denne version, realisere følgende funktioner: bevægelse fremad stempelslag for 10 stempelslag adskilt af hvileperioder, hurtig bevægelse fremad og igangsættelse, hurtig uigenkaldelig tilbagegående bevægelse, styret enten manuelt eller automatisk i tilfælde af ekstraordinær forlængelse af varigheden af den aktive periode.For example. the logic selected for this version can realize the following functions: forward motion stroke for 10 stroke strokes separated by rest periods, fast forward movement and initiation, rapid irrevocable backward movement, controlled either manually or automatically in case of extraordinary extension of the duration of the active period.
15 Disse forskellige funktioner opnås ved henholdsvis, se fig.15 These different functions are obtained by, respectively, see fig.
5 : - for fremadgående bevægelse stempelslag for stempelslag takket være en opladning med konstant strømstyrke af en kondensator, som koblet til en tyristor med anodeport danner en af-20 spænder (eng.: relaxer, -aflader), som iværksætter en rotation af den gearede motor 2,1 ved at starte (tænde) en tyristor. Standsning af motoren opnås ved at slutte en brydekontakt 10, som påvirkes af den drejelige magnet 9 gennem styrekappen 5, idet denne lukning af brydekontakten 10 frem-25 kalder slukning af tyristoren 31 ved en kortslutning, som efterfølges af en åbning, som eliminerer spændingsforsyningen til baserne af de to komplementære transistorer, der er monteret med fælles emittere, hvoraf den ene derved kortslutter motorens 2,1 ankervikling; 30 - for hurtig fremadgående bevægelse og igangsættelse med en manuelt trykknapkontakt 14, som når den påvirkes, f.eks. spændingsforsyner basis af gearmotorens 2,1 styretransistor.5: - for forward movement piston stroke for piston stroke thanks to a constant current charge of a capacitor which, coupled to a thyristor with anode port, forms a detent (relaxer, discharge) which initiates a rotation of the geared engine 2.1 by starting (turning on) a thyristor. Stopping of the motor is accomplished by closing a switch 10, which is actuated by the rotary magnet 9 through the control sheath 5, this closure of the switch 10 causing the shutting off of the thyristor 31 by a short circuit followed by an opening which eliminates the voltage supply to the the bases of the two complementary transistors mounted with common emitters, one of which thereby short-circuits the 2.1 anchor winding of the motor; 30 - for fast forward movement and startup with a manual pushbutton switch 14, which when actuated, e.g. voltage supply base of the 2.1 steering transistor of the gear motor.
7 DK 170742 B17 DK 170742 B1
En variant af denne funktion kan opnås ved en kontakt, som stærkt forøger ladestrømmen til tidsgiverkondensatoren for hovedforsinkelseskredsløbet eller afladningskredsløbet 29; for en returbevægelse med magnetisering af venderelæet 5 enten manuelt 14 eller ved hjælp af et hjælpekredsløb eller afladningskredsløb 30. Strømforsyningen til motoren afledes da delvis over en lydalarm. Afladningstiden for afladningskredsløbet vælges således, at den i tilstrækkeligt omfang overskrider leveringstiden for en bolus eller portion under 10 normalt tryk. Når denne tidsperiode derimod er særlig lang ved at hindre fremføringen af slæden 6, vender dette andet afladningskredsløb eller forsinkelseskredsløb 30 venderelæet via en tyristor. Denne funktion erstatter på samme tid et organ til at detektere en uønsket undertrykkelse af 15 afladningerne eller forsinkelserne og afslutningen af et fremadgående stempelslag. Afslutningen af et tilbagegående stempelslag sikres af en omskifter 20, som påvirkes af magnetfeltet.A variant of this function can be obtained by a switch which greatly increases the charging current to the timing capacitor of the main delay circuit or the discharge circuit 29; for a return movement with magnetization of the turning relay 5 either manually 14 or by means of an auxiliary circuit or discharge circuit 30. The power supply to the motor is then partially diverted over an audible alarm. The discharge time of the discharge circuit is chosen such that it sufficiently exceeds the delivery time of a bolus or portion below normal pressure. On the other hand, when this time period is particularly long by obstructing the advance of the carriage 6, this second discharge circuit or delay circuit 30 reverses the turning relay via a thyristor. This function simultaneously replaces a means for detecting an unwanted suppression of the 15 discharges or delays and the completion of a forward piston stroke. The termination of a reciprocating piston stroke is ensured by a switch 20 which is affected by the magnetic field.
Bestemmelse af den maksimale kraft, som udøves af gearmotoren 20 2, den endeløse skrue 3, slæden 6 og stempelstangen 7 på stemplet 21 i sprøjten 19, fås ved hjælp af en styring af den intensitet (strøm), som gennemløber gearmotoren 2,1. Reguleringen af intensiteten til den maksimale værdi valgt som svarende til et særlig stort tryk sikres tilnærmelsesvis af en 25 ballastmodstand i serie med gearmotoren 2 og afsluttet af en finregulering ved hjælp af en modstand, som begrænser basisstrømmen til den transistor, der er monteret med fælles emitter, og som strømforsyner gearmotoren.Determination of the maximum force exerted by the gear motor 20 2, the endless screw 3, the carriage 6 and the piston rod 7 on the piston 21 of the syringe 19 is obtained by a control of the intensity (current) passing through the gear motor 2.1. The regulation of the intensity to the maximum value selected as corresponding to a particularly high pressure is approximately assured by a ballast resistance in series with the gear motor 2 and completed by a fine control by means of a resistor which limits the base current to the transistor mounted with common emitter. , and which power the gear motor.
I en version, som mere specielt er indrettet til iterative 30 intradermiske injektioner, er kassen udformet med et pistolgreb, se fig. 3, hvori der ligger et batteri. Resten af kassen har den tidligere beskrevne form som et parallelepipe-dum og har især de samme organer til fastholdelse og beskyttelse af sprøjten.In a version more specifically designed for iterative intradermal injections, the box is formed with a pistol grip, see FIG. 3, wherein there is a battery. The remainder of the box has the previously described shape as a parallelepipe and in particular has the same means for holding and protecting the syringe.
8 DK 170742 B18 DK 170742 B1
Med pistolformen anvendes eventuelt en fremadgående drift med stempelslag for stempelslag, eller en hurtig fremadgående bevægelse og en automatisk uigenkaldelig tilbagegående bevægelse, dog uden at være begrænset dertil.The gun shape may optionally use a forward operation with piston stroke for piston stroke, or a fast forward movement and an automatically irrevocable backward movement, however, without being limited thereto.
5 Disse forskellige funktioner opnås henholdsvis, se fig. 6, - stempelslag for stempelslag ved vipning af en vendekontakt som sikrer afladning af en kondensator, der starter eller tænder en tyristor 31, - hurtig fremadgående drift ved direkte strømforsyning af ba-10 serne på de to komplementære transistorer, - tilbagegående bevægelse ved hjælp af en kontakt 22, der påvirkes af magnetismen i magneten 8, der er monteret i fast forbindelse med slæden 6, i en position, der markerer afslutningen af det fremadgående slag, gennem væggen af styrekappen 15 5.5 These different functions are obtained respectively, see fig. 6, - piston stroke for piston stroke by tilting a reversing contact ensuring discharge of a capacitor starting or switching on a thyristor 31, - fast forward operation by direct power supply of the bases of the two complementary transistors, - reciprocating movement by means of a contact 22 affected by the magnetism of the magnet 8, which is fixedly connected to the carriage 6, in a position marking the end of the forward stroke, through the wall of the control sheath 15 5.
Den eneste visning udgøres af en lysdiode 15, der er synlig gennem en transparent knap 24 placeret på forpladen af lede-hylsteret, og som strømforsynes, når tyristoren eller kontakten 10, som påvirkes af den drejelige magnet 9, er ledende.The only display is a LED 15, which is visible through a transparent button 24 located on the front of the guide housing, and which is powered when the thyristor or switch 10, which is actuated by the rotating magnet 9, is conductive.
20 Den permanente udsendelse af lys fra dioden 23 angiver således, at gearmotoren 2 spændingsforsynes, men bremses af en særlig stor reaktion af stemplet 21 i sprøjten 19, som overfører en hindring til strømmen af den deri indeholdte væske.Thus, the permanent emission of light from the diode 23 indicates that the gear motor 2 is energized, but is braked by a particularly large reaction of the plunger 21 in the syringe 19 which impedes a flow to the flow of the liquid contained therein.
25 Den transparente knap 24 kan med fordel bære et gevindskåret blindhul, hvori der drejer en skrue 25 med et riflet cylindrisk hoved, som tjener som stop for at justere indtrængningsdybden af kanylen 23 i patientens dermi. Hovedet af denne skrue 25, der kommer i kontakt med patientens hud, kan 30 være dækket af engangshætter.The transparent button 24 may advantageously carry a threaded blind hole in which a screw 25 is rotated with a serrated cylindrical head, which serves as a stop to adjust the depth of penetration of the cannula 23 into the patient's dermis. The head of this screw 25 which comes into contact with the patient's skin may be covered by disposable caps.
Claims (15)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8608781 | 1986-06-18 | ||
| FR8608781A FR2600258A1 (en) | 1986-06-18 | 1986-06-18 | PUSH-SYRINGE DEVICE FOR AUTOMATIC PARENTERAL INJECTION WITH SERVICING AND PROGRAMMING |
| PCT/FR1987/000226 WO1987007843A1 (en) | 1986-06-18 | 1987-06-17 | Monostroke syringe pusher for automatic parenteral injections with servo-control and programming |
| FR8700226 | 1987-06-17 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK80188D0 DK80188D0 (en) | 1988-02-16 |
| DK80188A DK80188A (en) | 1988-02-16 |
| DK170742B1 true DK170742B1 (en) | 1996-01-08 |
Family
ID=9336440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK080188A DK170742B1 (en) | 1986-06-18 | 1988-02-16 | Electromechanical drive unit for a single-stroke plunger syringe |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0270628B1 (en) |
| JP (1) | JP2627759B2 (en) |
| AU (1) | AU613871B2 (en) |
| DK (1) | DK170742B1 (en) |
| FR (1) | FR2600258A1 (en) |
| WO (1) | WO1987007843A1 (en) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5259732A (en) * | 1992-04-29 | 1993-11-09 | Becton, Dickinson And Company | Syringe pump with syringe barrel position detector |
| WO1996005878A1 (en) * | 1994-08-24 | 1996-02-29 | Eli Lilly Japan Kabushiki Kaisha | Injection apparatus |
| DE10330986B4 (en) * | 2003-07-09 | 2010-01-07 | Tecpharma Licensing Ag | Non-contact scanning with magnetoresistive sensor |
| BRPI0506837A (en) | 2004-01-12 | 2007-06-12 | Iscience Surgical Corp | viscous material injector, and devices and kit for providing micro-quantities of viscous materials |
| GB2414775B (en) | 2004-05-28 | 2008-05-21 | Cilag Ag Int | Releasable coupling and injection device |
| GB2414400B (en) | 2004-05-28 | 2009-01-14 | Cilag Ag Int | Injection device |
| GB2414402B (en) | 2004-05-28 | 2009-04-22 | Cilag Ag Int | Injection device |
| GB2414401B (en) † | 2004-05-28 | 2009-06-17 | Cilag Ag Int | Injection device |
| GB2424836B (en) | 2005-04-06 | 2010-09-22 | Cilag Ag Int | Injection device (bayonet cap removal) |
| GB2425062B (en) | 2005-04-06 | 2010-07-21 | Cilag Ag Int | Injection device |
| EP1759729B1 (en) | 2005-08-30 | 2009-12-23 | Cilag GmbH International | Needle assembly for a prefilled syringe system |
| US20110098656A1 (en) | 2005-09-27 | 2011-04-28 | Burnell Rosie L | Auto-injection device with needle protecting cap having outer and inner sleeves |
| GB2438591B (en) | 2006-06-01 | 2011-07-13 | Cilag Gmbh Int | Injection device |
| AT503419B1 (en) | 2006-06-08 | 2007-10-15 | Hans-Peter Dr Steiner | Dosing device for uterine embryo transfer, has trigger unit supporting rotary motions in both directions of rotation, activating pressure and/or suction movements of syringe piston, and comprising opening for finger that operates unit |
| GB2461085B (en) | 2008-06-19 | 2012-08-29 | Cilag Gmbh Int | Injection device |
| KR101284724B1 (en) * | 2012-01-18 | 2013-07-17 | 강원대학교산학협력단 | Injection device |
| GB2517896B (en) | 2013-06-11 | 2015-07-08 | Cilag Gmbh Int | Injection device |
| GB2515032A (en) | 2013-06-11 | 2014-12-17 | Cilag Gmbh Int | Guide for an injection device |
| GB2515038A (en) | 2013-06-11 | 2014-12-17 | Cilag Gmbh Int | Injection device |
| GB2515039B (en) | 2013-06-11 | 2015-05-27 | Cilag Gmbh Int | Injection Device |
| KR102030230B1 (en) * | 2017-02-08 | 2019-10-08 | 인제대학교 산학협력단 | Syringe handling assist device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3731679A (en) * | 1970-10-19 | 1973-05-08 | Sherwood Medical Ind Inc | Infusion system |
| US3858581A (en) * | 1973-07-02 | 1975-01-07 | Dean Kamen | Medication injection device |
| GB1595972A (en) * | 1977-03-09 | 1981-08-19 | Nat Res Dev | Syringe driving apparatus |
| CA1169323A (en) * | 1980-06-03 | 1984-06-19 | Anthony M. Albisser | Insulin infusion device |
| US4435173A (en) * | 1982-03-05 | 1984-03-06 | Delta Medical Industries | Variable rate syringe pump for insulin delivery |
| IT8453710U1 (en) * | 1984-08-07 | 1986-02-07 | Hospal Dasco Spa | EQUIPMENT FOR ADMINISTERING A LIQUID THROUGH AN INJECTOR. |
-
1986
- 1986-06-18 FR FR8608781A patent/FR2600258A1/en not_active Withdrawn
-
1987
- 1987-06-17 JP JP62503571A patent/JP2627759B2/en not_active Expired - Lifetime
- 1987-06-17 AU AU75153/87A patent/AU613871B2/en not_active Ceased
- 1987-06-17 EP EP19870903889 patent/EP0270628B1/en not_active Expired - Lifetime
- 1987-06-17 WO PCT/FR1987/000226 patent/WO1987007843A1/en not_active Ceased
-
1988
- 1988-02-16 DK DK080188A patent/DK170742B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0270628A1 (en) | 1988-06-15 |
| DK80188D0 (en) | 1988-02-16 |
| EP0270628B1 (en) | 1992-05-13 |
| JPS63503520A (en) | 1988-12-22 |
| WO1987007843A1 (en) | 1987-12-30 |
| AU613871B2 (en) | 1991-08-15 |
| AU7515387A (en) | 1988-01-12 |
| FR2600258A1 (en) | 1987-12-24 |
| DK80188A (en) | 1988-02-16 |
| JP2627759B2 (en) | 1997-07-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B1 | Patent granted (law 1993) | ||
| PBP | Patent lapsed |