EP0701864A2 - Applicateur - Google Patents

Applicateur Download PDF

Info

Publication number: EP0701864A2
Authority: EP; European Patent Office
Prior art keywords: piston; cylinder; applicator; applicator according; head
Prior art date: 1994-09-17
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP95114157A

Other languages

German (de)

English (en)

Other versions

EP0701864B1 (fr

EP0701864A3 (fr

Inventor

Roland Kneer

Christoph Heiland

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Gaplast GmbH

Original Assignee

Gaplast GmbH

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1994-09-17

Filing date

1995-09-09

Publication date

1996-03-20

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25940223&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0701864(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1995-09-09 Application filed by Gaplast GmbH filed Critical Gaplast GmbH

1996-03-20 Publication of EP0701864A2 publication Critical patent/EP0701864A2/fr

1996-12-04 Publication of EP0701864A3 publication Critical patent/EP0701864A3/fr

2001-07-18 Application granted granted Critical

2001-07-18 Publication of EP0701864B1 publication Critical patent/EP0701864B1/fr

2015-09-09 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
- B01L3/0217—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids of the plunger pump type

Definitions

the invention relates to an applicator according to the preamble of claim 1.
Such an applicator can be used, for example, to take a sample from a test tube containing blood in order to subject the blood to a test.
the applicator can also serve as a syringe to administer medication to a patient or to draw blood directly from him.
the above information is only an example of use, to which more could be added.
the object of the present invention is to design an applicator in such a way that it can be operated with one hand.
the invention provides that at least one spring element is arranged between the piston and the cylinder, which pulls the piston back or pushes it back into a rear end position in which the piston only engages with its front end section or piston head in the cylinder.
the plunger is first pressed into the cylinder against spring force, which can be easily accomplished with one hand.
the spring element is tensioned so that it then automatically moves the piston back to a rear end position, at the same time the sample is sucked into the cylinder.
the applicator is not only suitable for receiving and dispensing a liquid, but also a gaseous medium.
the spring element can be a helical spring, for example, which can be arranged between stops or spring seats provided on the cylinder and on the piston.
the at least one spring element can also be a spring arm made of an elastic material, such as a leaf spring or a resilient tab.
the spring element preferably in the form of a leaf spring or flat tab, is attached to the rear end of the piston facing away from the cylinder and to the rear end of the cylinder facing the piston.
This spring element can be a component which is separate from the piston and the cylinder and which, for example, is in recesses in the piston and the cylinder snaps into place or is glued.
the spring element preferably in the form of a flat tab, is integrally formed on the cylinder and the piston. This means that it consists of the same material as these components, with PP and PE in particular being mentioned here.
the spring tab extend beyond the cylinder, i.e. that a short tab also extends from the diametrically opposite side of the cylinder, the function of this short tab being explained below.
a further spring arm is prestressed between the piston and the cylinder, this further spring arm being integrally formed on the side of the piston which is preferably diametrically opposite the former spring arm, that is to say that the two spring arms and the short spring piece or link piece mentioned above are open lie in an axis or in a plane. It is emphasized that the invention is not limited to this.
the further spring arm has a recess at a distance from its free end which is dimensioned such that the head end of the piston can pass through the recess. Following the cut-out, there remains a short piece of tab which protrudes beyond the piston in the fully assembled state of the applicator described below.
the cylinder, the piston and the tab connecting these components and the other molded tabs are manufactured in one piece, preferably by injection molding.
the spring elements or tabs run in a straight line in a common alignment, whereby the piston and the cylinder extend with their axes perpendicular to the longitudinal axis of the plates, in opposite directions.
the applicator is mounted in such a way that the spring arm having the recess is first bent by 180 ° and is guided with the recess over the head end of the piston. Then the other spring arm is also bent by 180 °, the cylinder being pushed onto the piston so that the piston head engages in the cylinder. The two protruding, short spring pieces come into contact with the associated spring arms and support them.
the spring arms as well as the short spring or tab pieces are not manufactured in one piece with the cylinder and the piston, they can consist of a single, separate component which, as mentioned above, snap or, for example, into recesses in the rear sections of the piston and the cylinder can be glued there, for example.
an annular bead or a so-called olive is formed on the outside of the head end of the piston.
a suitable blocking device for example likewise an annular bead or hook projecting inwards, can be provided on the inner wall of the cylinder, the free inner diameter being somewhat smaller than the outer diameter of the piston head in the region of the annular bead or the olive. If the piston head is forced through the blocking device with the application of a certain force, a defined end position is created for the piston, which the piston can no longer exceed automatically.
a further blocking device can be located on the inner wall of the cylinder following the end position of the piston head described above, the diameter of which is also somewhat smaller than the maximum outer diameter of the piston head. It is also proposed with particular advantage that the interior of the cylinder following this second blocking device is somewhat smaller than the outer diameter of the piston in the area of the olive, ring bead or the like, so that the piston is opposite in the entire area following the second blocking device the inner wall of the cylinder is sealed. In the area of the second blocking device, the free diameter of the cylinder is not only reduced in relation to the area of the rear end position, but also in relation to the front area of the cylinder. This training has significant advantages.
the plunger In conventional syringes, the plunger is in the advanced position, as long as the syringe is not being used, in which it is more or less completely pushed into the cylinder. This location is referred to here as the "storage position". Since the piston has a radial oversize due to the required sealing relative to the inner wall of the cylinder, this leads to the cylinder being expanded in this bearing position, that is to say being given an annular bulge.
the plunger When the syringe is used, the plunger is withdrawn to draw in a liquid and then advanced again to deliver the medication to a patient. This takes place against a constant counterforce until the piston reaches the area of the front, bulged bearing position in which the counterforce is suddenly reduced. The result of this is that the piston feed inevitably takes place faster in this area, as a result of which a considerably larger quantity of liquid is suddenly squeezed out. This has the disadvantage, among other things, that it can cause considerable pain.
the ring bulge which limits its automatic backward movement, prevents the piston from reaching the storage position again, and thus limits the so-called dosing position from which the piston is fed to deliver the absorbed liquid.
the liquid is dispensed over the entire piston stroke against a constant resistance force, so that the liquid can be dispensed with a constant amount.
the piston head can be locked in the advanced position in the cylinder.
a locking mechanism can be provided in the advanced end position, which holds the piston until the locking is released, so that the applicator then automatically draws the blood by spring force.
an annular bead can again be formed on the inner wall of the cylinder, which holds the piston until a sufficient force is exerted on the piston by lateral compression of the spring tabs, so that it is withdrawn via the annular bead .
the tip of the cylinder can be made of plastic in some applications, it being preferred that it be integrally formed on the cylinder.
a Luer cone according to DIN 13050 can also be formed on the cylinder, into which, for example, a metal cannula according to DIN 13097 can be inserted.
the design can also be such that a metal cannula is pressed or glued or injection-molded into the front end section of the cylinder.
the size of the spring force can be adjusted to the desired dimension, for example, by selecting a suitable wall thickness of the spring tabs.
the figures show embodiments of an applicator that are particularly suitable for taking blood samples from blood-containing containers. For other applications it may be necessary to make the applicator larger.
Fig. 1 shows a one-piece injection molded part 1 approximately on a scale of 2: 1.
the injection molded part contains a part serving as a piston 2, on which flat tabs are formed on both sides, which serve as spring arms 3 and 4.
the spring arm 3 contains a recess 5 which is dimensioned so that the piston 2 can pass through it.
the spring arm continues behind the recess 5 in an extension piece 6.
the spring arm 4 leads to a part serving as a cylinder 7, on which a cannula or tip 8 is formed.
the spring arm 4 continues on the other side of the cylinder 7 in an extension piece 9.
the spring arms 3, 4 and the extension pieces 6, 9 are part of a straight, flat tab 10, from which the piston 2 and the cylinder 7 extend at right angles.
the closed head 11 of the piston 2 has a flat conical shape that matches the front end portion 12 of the cylinder interior. A liquid located in the cylinder 7 can thus be completely squeezed out.
FIGS. 2A and 2B The assembly of the applicator is shown in FIGS. 2A and 2B. First, the spring arm 3 is pushed over the piston 2, the piston head 11 reaching through the recess 5. Then, in a second assembly step, the piston head 11 is inserted into the cylinder 7, the spring arm 4 now also being bent through 180 °.
annular bead 13 On the upper edge of the inner wall of the cylinder 7 there is an annular bead 13 projecting somewhat radially inward, and an annular bead 14 is also formed on the outside of the piston head 11, which protrudes slightly beyond the subsequent piston wall.
the dimensions are such that the piston head can only pass through its annular bead 14 through the annular bead 13 with the application of a certain force, the annular bead 13 as a blocking device preventing the piston head 11 from the cylinder 7 by the force of the spring arms 3, 4 can leak.
the piston 2 has a small excess in the area of the annular bead 14 compared to the clear interior of the cylinder 7, as a result of which a liquid-tight seal between the piston and the cylinder is created.
FIG. 2C shows a side view of the applicator. The figure shows that the tab 10 has a width that is slightly larger than the outer diameter of the piston and the cylinder.
Fig. 2B shows that the extension pieces 6 and 9 put on the spring arms 4 and 3, whereby the spring arms assume the symmetrical shape shown.
Fig. 3 shows on a scale 1: 1 on the right the applicator of Figures 1 to 2 in the actuated state and on the left in the state in which the piston is in the retracted starting position.
An extension 15 is formed on the cylinder 7 of the second embodiment, into which a stainless steel cannula 16 is inserted, which projects a short piece 17 into the interior of the cylinder 7.
the front end of the piston head 19 contains a recess 18 into which the protruding end 17 of the needle 16 enters in the advanced position of the piston 2, as can also be seen in FIG. 6.
FIG. 8 shows, in an enlarged state, the region of the rear end section of the piston 7 marked by a dashed circle in FIG. 5.
two annular beads 20 and 21 are formed at an axial distance from one another, between which there is an annular trough-like Indentation 22 is located, in which an outer annular bead or olive 23 on piston head 19 engages in the so-called bearing position.
the outside diameter of the piston head in the area of the olive 23 essentially coincides with the inside diameter of the cylinder 7 in the area of the annular indentation 22, so that the cylinder wall is not widened.
the cylinder 7 has a clear diameter which is slightly smaller than the outer diameter of the piston head 19 in the region of the olive 23, so that a liquid-tight seal between the olive 23 and the cylinder inner wall is ensured when the applicator is actuated.
FIG. 9 shows an alternative embodiment of the piston head, which here is provided with an annular groove 24 into which an O-ring 25 is inserted.
10 shows an applicator, which is provided for taking a blood sample, on a scale of 1: 1.

Landscapes

Health & Medical Sciences (AREA)
Clinical Laboratory Science (AREA)
Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
Infusion, Injection, And Reservoir Apparatuses (AREA)
Massaging Devices (AREA)
Orthopedics, Nursing, And Contraception (AREA)
Coating Apparatus (AREA)
Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

EP95114157A 1994-09-17 1995-09-09 Applicateur Expired - Lifetime EP0701864B1 (fr)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
DE4433198		1994-09-17
DE4433198A DE4433198C1 (de)	1994-09-17	1994-09-17	Applikator
US08/528,547 US5658258A (en)	1994-09-17	1995-09-15	One piece disposable applicator

Publications (3)

Publication Number	Publication Date
EP0701864A2 true EP0701864A2 (fr)	1996-03-20
EP0701864A3 EP0701864A3 (fr)	1996-12-04
EP0701864B1 EP0701864B1 (fr)	2001-07-18

Family

ID=25940223

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP95114157A Expired - Lifetime EP0701864B1 (fr)	1994-09-17	1995-09-09	Applicateur

Country Status (5)

Country	Link
US (1)	US5658258A (fr)
EP (1)	EP0701864B1 (fr)
AT (1)	ATE203189T1 (fr)
DE (2)	DE4433198C1 (fr)
ES (1)	ES2161258T3 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2788985A1 (fr) *	1999-01-28	2000-08-04	Dit De Callac Jean Marie Colin	Dispositif de protection en une piece, automatique autobloquant pour seringues en verre ou plastique
USD432647S (en) *	1999-02-25	2000-10-24	Barry Farris	No reflux syringe
AU6583600A (en) *	1999-08-17	2001-03-13	Technology Partnership Plc, The	Sampling/dispensing device with plunger and housing set onto plunger
IL157981A (en)	2003-09-17	2014-01-30	Elcam Medical Agricultural Cooperative Ass Ltd	Auto injector
IL160891A0 (en)	2004-03-16	2004-08-31		Auto-mix needle
US10021958B2 (en)	2013-01-14	2018-07-17	Tenacious Holdings, Inc.	Tool safety strap
EP2968792B1 (fr)	2013-03-11	2019-05-15	Antares Pharma, Inc.	Injecteur de dose avec système à pignon
USD789188S1 (en)	2013-09-09	2017-06-13	Tenacious Holdings, Inc.	Lanyard
USD796836S1 (en)	2013-09-09	2017-09-12	Tenacious Holdings, Inc.	Lanyard
USD741060S1 (en)	2013-09-09	2015-10-20	Tenacious Holdings, Inc.	Lanyard
US20210121188A1 (en)	2018-02-02	2021-04-29	Calyxo, Inc.	Devices and methods for minimally invasive kidney stone removal by combined aspiration and irrigation
EP3826702A4 (fr)	2018-07-24	2022-04-20	Antares Pharma, Inc.	Injecteur
CN119562791A (zh)	2022-03-02	2025-03-04	凯利克斯欧公司	肾结石治疗系统
US20240108412A1 (en)	2022-09-29	2024-04-04	Calyxo, Inc.	Tool guiding device for kidney stone treatment apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR509675A (fr) *	1919-04-23	1920-11-17	Jean Etienne Larche	Aspirateur pour opérations chirurgicales diverses
US4410323A (en) *	1980-06-23	1983-10-18	Milton Hodosh	Predosed disposable syringe
EP0166010A1 (fr) *	1984-06-23	1986-01-02	Giuseppe Merighi	Dispositif de prise instantanée d'un échantillon sanguin pollué par une morsure de serpent
DE3609555A1 (de) *	1986-03-21	1987-09-24	Josef Porner	Blutentnahmespritze
IT1224201B (it) *	1987-10-08	1990-09-26	Tamburini Carlo Costr Art Plas	Dispositivo atto a proteggere l'ago di una siringa per evitare punture accidentale e conseguenti possibili contagi
US5135507A (en) *	1990-05-10	1992-08-04	Habley Medical Technology Corporation	One-piece syringe
DK145792D0 (da) *	1992-12-03	1992-12-03	Dumex Ltd As	Vaeskedispenseringsapparat

1994
- 1994-09-17 DE DE4433198A patent/DE4433198C1/de not_active Expired - Fee Related
1995
- 1995-09-09 ES ES95114157T patent/ES2161258T3/es not_active Expired - Lifetime
- 1995-09-09 DE DE59509419T patent/DE59509419D1/de not_active Expired - Fee Related
- 1995-09-09 EP EP95114157A patent/EP0701864B1/fr not_active Expired - Lifetime
- 1995-09-09 AT AT95114157T patent/ATE203189T1/de not_active IP Right Cessation
- 1995-09-15 US US08/528,547 patent/US5658258A/en not_active Expired - Lifetime

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number	Publication date
ES2161258T3 (es)	2001-12-01
DE59509419D1 (de)	2001-08-23
US5658258A (en)	1997-08-19
ATE203189T1 (de)	2001-08-15
EP0701864B1 (fr)	2001-07-18
DE4433198C1 (de)	1996-06-13
EP0701864A3 (fr)	1996-12-04

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Publication	Publication Date	Title
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DE69728062T2 (de)	2005-02-10	Injektionsspritze mit einer verschiebbaren nadelschutzvorrichtung
DE2719815A1 (de)	1977-11-17	Medizinische spritze
CH623643A5 (fr)	1981-06-15
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DE29900482U1 (de)	2000-08-31	Injektionsgerät
DE202013001350U1 (de)	2014-05-09	Injektionsgerät
EP0701864A2 (fr)	1996-03-20	Applicateur
DE2046398A1 (de)	1971-04-15	Zusammenquetschbare Rohre
EP1974759A1 (fr)	2008-10-01	Injection appareil, specialement insulin-pen
EP1242140B1 (fr)	2006-03-08	Seringue pour implant
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DE3142524C2 (fr)	1989-11-23