WO1998029054A1 - Dosing pistol for use with dental cartridges - Google Patents

Dosing pistol for use with dental cartridges Download PDF

Info

Publication number
WO1998029054A1
WO1998029054A1 PCT/EP1998/000002 EP9800002W WO9829054A1 WO 1998029054 A1 WO1998029054 A1 WO 1998029054A1 EP 9800002 W EP9800002 W EP 9800002W WO 9829054 A1 WO9829054 A1 WO 9829054A1
Authority
WO
WIPO (PCT)
Prior art keywords
ƒ
da
characterized
dosing
gun according
Prior art date
Application number
PCT/EP1998/000002
Other languages
German (de)
French (fr)
Inventor
Adalbert Schmid
Original Assignee
Saremco Ag
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.)
Filing date
Publication date
Priority to DE19700213A priority Critical patent/DE19700213A1/en
Priority to DE19700213.7 priority
Application filed by Saremco Ag filed Critical Saremco Ag
Publication of WO1998029054A1 publication Critical patent/WO1998029054A1/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00Filling or capping teeth
    • A61C5/60Devices specially adapted for pressing or mixing capping or filling materials, e.g. amalgam presses
    • A61C5/62Applicators, e.g. syringes or guns

Abstract

In a dosing pistol for use with dental cartridges, a dental cartridge is held on the dosing device and the material contained in the dental cartridge is dispensed when an actuating lever is actuated. The actuating lever acts over a clamping piece on a driving rod which moves the plunger piston located in the dental cartridge.

Description

Dispensing gun for use with dental cartridges

The invention provides a dispensing gun for use with a dental cartridge, which is preferably used for dental purposes. Such a dispensing gun in conjunction with a dental cartridge is known for example to the subject of DE 42 00 044th In this known dispensing gun essentially a drive rod is present, which forms an apex point penetrates directly as a push rod in a dental cartridge and shifts a displaceably arranged in the dental cartridge plunger to the material contained in the dental cartridge in front of the plunger of a Ausgußspitze out to displace.

A disadvantage of the known dispensing gun that of the

Handle of the dispensing gun aufgeübte pressure is difficult to meter, so that a small variation in the pressure on the lever leads to a relatively large displacement of the push rod, leading to an uncontrolled ejection of material from the Ausgußspitze the dental cartridge.

In addition, the necessary manual force for the displacement of the push rod (drive rod) is relatively large, which results in a clean application of the dental material is no longer ensured.

It is absent in the known dispensing gun at a sensitive dosing and an easy operation.

Incidentally, there is the further disadvantage that, although the

Dental cartridge replaceable held in the dispensing gun

BESTATIGUNGSKOPIE, but that the dispensing gun itself can not be cleaned easily, because for cleaning purposes the entire dispensing gun is subjected to a cleaning process, which springs contained therein other drive elements can be harmful to the.

The invention is therefore the object of developing a dispensing gun of the aforementioned type so that a much more sensitive displacement of the drive rod is ensured and wherein a substantially lower operating force to be used.

To achieve the object, the invention is characterized by the technical teaching of claim 1.

The essential feature here is that the intended operating lever does not act directly on a drive rod, but a clamp is interposed. This clamp is pivoted due to the operation of the operating lever. In a first

Embodiment, it takes the drive rod, during this pivoting movement forward with. The drive rod then acts in turn on a push rod which operates the plunger.

In another embodiment, the drive rod is released and displaced by a compression spring by the pivoting of the clamping piece. This has the advantage that only a very small force to actuate the plunger is required. The drive rod is then moved until the operating lever is released, pivots back the terminal board and so the drive rod is blocked.

In a preferred embodiment of the invention is to

Mounting the dental cartridge has a holding device is present, which consists essentially of a clamping pincer, which clamp assembly comprises one or more pivotable holding pliers, which take hold pliers dental cartridge and hold. The dental cartridge is detachably fixed in this case in a corresponding recess of the clamping pincer and secured in position.

In a further embodiment of the invention, the entire holding apparatus having the above-described clamp assembly for releasably holding the dental cartridge from the rest of the body of the dispensing gun is designed to be removable and detachable. As a connecting element, any arbitrary coupling element may be used here, such as a thread, a Bejonettverschluß, a clamping ring or the like.

The dispensing gun according to the invention is thus distinguished primarily by a sensitive displacement of a drive rod, said drive rod acting on a push rod, which push rod is arranged in the detachably mounted holding device.

The operating lever needs to be operated, because he has to work only 'against the spring action of a spring, which spring defines the clamping or opening position of the clamp with relatively low operating force.

This results in a relatively elongate construction of the dispensing gun, with the advantage that the operating lever can be positioned relative to the rear end of the dosing to the hand which operates the operating lever to bring far away as possible from the mouth of the patient. In this way it is avoided that the hand that operates the operating lever, where it will interfere in the patient's mouth. A further advantage is that is possible by the separation of the holding device for the dental cartridge from the drive body disassembly of the dispensing gun readily. It is, moreover, one modular design. Due to this modular structure contamination of the drive body by the filling material is virtually eliminated. Next, the holding device can be removed without any problems from the driving body and cleaned separately from this. It can be used for receiving and holding various dental cartridges various holding devices with always the same drive body beyond.

In order to achieve a continuous operation of the plunger, the drive rod can be carried out smoothly. but it is also possible, of course, here in certain intervals knobs or the like provided in order to achieve in this way a defined, unvarying essentially displacement of the drive rod.

It is preferable if the clamping member is biased by a spring. This spring is preferably formed as a compression spring and presses upon release of the actuating lever the clamping piece back into its rest position. This results in a position-independent resetting of the operating lever is simultaneously ensured. By any suitable means, for example, acts on the spring, which provides the bias voltage for the clamping piece, the operation force can be adjusted to some extent.

In a development of the operating lever is attached to a lever housing which is fixedly mounted in the drive body. Preferably, the clamping piece is then also added to this lever housing, there is a suitable free space is formed. This design makes installation easier.

Further advantageous features and embodiments of the invention will become apparent from the dependent claims.

The invention object of the present invention is derived not only from the subject of the individual claims, but also from the combination of the individual claims with each other.

All in the documents, including the summary, disclosed details and characteristics, in particular the spatial design shown in the drawings as essential to the invention claimed, as far as they individually or in combination over the prior art are new.

In the following the invention is explained in more detail with reference representing several embodiments drawings. In this connection further inventive features and advantages of the invention will become apparent from the drawings and their description.

Show it:

Figure 1: section of a preferred embodiment of the dispensing gun;

Figure 2 shows a section through the dispensing gun of Figure 1 in direction of arrow II - II in Figure 1;

Figure 3 shows a section through the holding device of Figure 1;

Figure 4: Detail section through the actuating device for the dispensing gun; Detail X in Figure 1; 5 shows a view in accordance with Figure 2 of a second embodiment;

6 shows an enlargement of the right half of Figure 1;

7 shows an enlargement of the left half of Figure 1;

Figures 8 and 9: a side and front view of a Klemmmstücks;

Figure 10 is a laser cutting of an operating lever;

11 shows the operating lever of Figure 10 in the finished state;

12 shows a Schitt by a sleeve;

Figure 13 is a plan view of a lever housing; and

14 shows a section through the lever housing of Fig. 13.

In Figures 1 to 4 show a first embodiment. The dispensing gun 1 consists essentially of a driving body 2, in which a drive rod 6 is formed on the operation of an operation lever 19 in the axial direction slidably, which drive rod 6 acts on a separately formed and located in physical contact with the drive rod push rod 7, which push rod is slidably disposed in a holder. 3 The holding device 3 is hereby detachably and removably attached to the front of the drive body. 2

The holding device 3 has, moreover, also the clamping means 4 for clamping fixture of a dental cartridge 5 which is detachably inserted into the holding device 3 at the front end of the holder. 3 The dental cartridge 5 has a Ausgußspitze at 35 and carries in its interior a plunger, not shown, at its front side the material is included in the dental cartridge. 5 If the plunger is driven in the direction of arrow 26 of the push rod 7, which rests on the back of the plunger, the material on the Ausgußspitze 35 is displaced outwardly.

The driving body 2 of the dispensing gun 1 consists essentially of an elongate, generally cylindrical metal or plastic body, in whose interior is axially displaced, the drive rod is guided. 6

For the displacement drive of the drive rod 6 a compression spring 9 can be used which biases spring-loaded in the direction of arrow 26, the driving rod 6 to be pressed a certain dose spring force on the push rod. 7

However, it can also be omitted, this compression spring 9 and instead can be described later feeding device 8 directly at the back end de-s dosing gun 1 are arranged about in the area, where the pressure spring shown here 9 is arranged.

Thus, the compression spring 9 is not necessary for the solution, but can be used for the drive.

The feed drive 8 consists essentially in accordance with Figure 4 of a clamping piece 10 which is incorporated with a bearing member 14 pivotable with clearance in a bearing opening 15 in the body of the drive body. 2 At this bearing part 14, a clamping bore 11 connects, which is selected to be slightly larger in diameter than the diameter of the cylindrical drive rod 6, said clamping bore forming clamping edges 12,13, which in a specific pivoting position of the clamping piece 10 with the surface of the drive rod wedge. 6

In the embodiment shown in Figure 4 the pivot position, the clamping piece 10 is in the clamping position with the drive rod. 6

For actuation of the clamping piece 10 of the operating lever 19 is provided here which is pivotably mounted on a bearing axis 20th The lever part 22 of the

The operating lever 19 acts in this case a projection 21 on the clamping piece 10, while the longer lever part is provided for actuating by hand. It is thus seen, that a relatively short pivoting path of the lever member 22 is applied over a relatively long actuation path of the actuating lever 19th

At the opposite end of the lever part 10 of the clamping piece sitting on this clamping piece on a corresponding abutment portion 16 one end of a compression spring 17, which compression spring 17 at the other end to a

supported adjusting device 18 (Fig. 1) which is designed as a spindle drive, and with which the spring force of the compression spring 17 is adjustable.

If now the actuating lever is actuated in the direction of arrow 38 19, then 22 pivots the lever part in the direction of arrow 25 to the front and the entire clamping piece 10 is also pivoted in the direction of arrow 25 against the force of the spring 17, thus helping to bring due to the now incipient clamping force on the clamping edges 12,13 the clamping bore 11 with the

Drive rod 6 wedges and this takes along the arrow 26 forward.

Once the force is removed on the operating lever 19 in the direction of arrow 38, the operating lever pivots under the

Action of the compression spring 17 back into the rest position according to Figure 1 and Figure 4, whereby the clamping edges 12,13 come out of engagement with the drive rod. 6

The lever member 22 acts in the other on a projection 23 of the clamping piece 10. This pivots back to the rest position in the direction of arrow 24 back under the action of the compression spring 17th

It is also important according to a further feature of the invention that the entire holding device 3 for releasably holding the dental cartridge 5 is disposed detachably at the front end of the drive body. 2

Here, it is provided that according to Figure 3 the holding device has a rear thread 36 which is screwed into an assigned threaded bore at the front of the drive body. 2 Here is then essential that the push rod 7 comes into physical contact with the front end of the drive rod. 6

Instead of the shown here threaded hole, a bayonet or a clamping ring can be used.

Importantly, only the detachable mounting of the entire holding device 3 to the driving body 2, so that the entire holding device can be removed for cleaning purposes and 3 may be subjected to a separate purification process. In addition, this holder can be easily replaced then at any pollution or becoming unusable without the entire drive body must be replaced with.

The holding device 3 in this case has from one another spaced apart and opposed retaining clamps 27,28, each retaining clamp is of the same design, so that the description of a single backup tong is sufficient. Each tong 27,28 is in this case pivotably mounted in the holding device 3 in a pivot bearing 29 and has hook-shaped front tongs 32, which define a receiving opening 34 to the front.

In this receiving opening 34, the dental cartridge 5 is inserted with its rear flange 33 of larger diameter, so that the flange rests 33 as positively in the receiving opening 34 and 32 of the holding clamps 27,28 on the body of the dental cartridge 5 is about to rest the tongs.

In this closed position or clamping position the tongs 32 are held by a respective spring 31 in the closed position, which spring is supported on one hand on the grip 30 of each tong 27,28 and on the other hand on the holding device 3 itself.

Upon actuation of the drive shaft 6 in the direction of arrow 26 so that the push rod 7 is simultaneously carried along and penetrates with its forward end in the dental cartridge 5 and acts on the back of the plunger there is displaceably arranged.

To release the dental cartridge 5 from the receiving opening 34, the grip pieces 30 of the retaining tongs 27,28 to the

Rotary bearing 29 around pivoted into the recess 37, whereby the receiving opening 34 opens toward the front and the entire dental cartridge 5 can be easily removed.

Instead of the drive described here principle with a rearwardly facing operating lever 19, the operating lever can also be arranged at the rear end of the driving body 2 and facing forward in order to achieve an even more compact construction. Moreover, it is also important that the driving rod 6 carries on its surface no detents or other indentations to allow a sensitive as possible and practical continuously variable displacement, a reduction of the movement of the operating lever 19 to the movement of the drive rod 6 in the ratio of, for example, takes place 20: 1.

In the second Ausführungsfom of Figures 5-14 has a substantially similar construction is shown. The construction itself is shown in Figures 5 - 7, different items in Figures 8 - 14th

The dispensing gun 40 again has a driving body 41 in which a drive rod is received 42nd The drive rod 42 is connected to the push rod. 7

At the front left end of the drive body 41 is provided with a sleeve 43, which causes an eccentricity of the cartridge. 5 Handling is thereby facilitated. This cartridge 5 is accommodated with claws 45 via a clamp member 44th The claws 45 are pivotably about a pivot point 46 and are biased by springs 47th The cartridge 5 is provided with a tip 48th

The dispensing gun 40 further includes an actuation lever 49 which is pivotable in the direction of arrow 50th The operating lever 49 is mounted on a lever housing 51 and acts through a drive rod 52 with a projection 53 on a clamping piece 54. The lug 53 limits the Schenk lever of the operating lever 49 in the direction of arrow 50. In Gegenichtung a limitation takes place by a threaded pin 55, which in the lever housing is screwed 51st

The clamp is loaded by a compression spring 56th to

Return of the actuating lever into the position shown there is provided a compression spring 57 which is pushed through the kelly 52 and presses on the approach 53rd To the rear of the drive body is completed by a cap 58th

Upon pivoting of the actuating lever 49 in

Direction of the arrow 50, the drive rod is moved 52in the direction of arrow 59 and simultaneously tilted slightly. The clamping piece 54 is also moved at the lower end of the kelly 52 via the projection 53, lies clampingly on the drive rod 42 and moves it in the direction of arrow 59. It is discharged material from the cartridge 5 via the tip 48th Preferably, a pivoting of the actuating lever 49 about 1 ° of movement of the drive rod 42 by 1 mm corresponds. The Gesamthube upon actuation is preferably limited to 18 ° or 18 mm.

Upon release of the actuating lever 49 of this is returned via the compression spring 57 in its initial position. This also the clamp 54 is pivoted back again, it can be done, a new hub.

The clamping piece 54 is shown 8 and 9 in Figs.. It has two transverse bores 72, with which it can be attached to the kelly ah 52nd The drive rod 42 passes through a feed opening 73 which is mounted obliquely.

Figures 10 and 11 show the Beätigungshebel 49 in the laser cutting and in the finished form. In the laser cutting are an inner opening 60 and openings 61, cut 62nd Overall, two tabs 63 which are bent upward for the completion form. The openings 61 serve for the storage on the lever housing 51, the openings 62 for the attachment of the drive rod 52. In figure 12 is shown the sleeve 43rd It is inserted into the drive body 41 and fixed. For connection of the clamping member 44 is provided with a thread 64 which is arranged exzentrirsch to the central axis of the drive body 41st

Figures 13 and 14 show the lever housing 51. It has two arms 65 which are attached on the outside rounded and adapted to the inner contour of the drive body 41st In the middle of a free space 66 for receiving the shim 54 is formed. The drive rod 42 (not shown) extends through a hole 67. To accommodate the projection 53 of the drive rod 52 (not shown), a recess 68 is provided. The threaded pin 55 (not shown) is screwed into a threaded bore 69th The operating lever 49 is pivotally supported on cross-bores 70 in the arms 65 by means of suitable pins or axles. For supporting the clamping piece 54, a stopper 71 is provided.

The entire feed mechanism can thus at the

Lever housing to be mounted 51 and then inserted into the drive body 41st

In the first embodiment, the operating lever 19 backwards, away from the tip, in the second forward.

It is possible to total a sensitive dosage of the ejected from the dental cartridge 5 material with how it previously was not known. drawing Legend

1. Dispense 40th Dispensing

2. drive body 41st drive body

3. holder 42nd drive rod

4. clamper 45 43rd shell

5. Dental Cartridge 44th clamping part

6. drive rod 45th claw

7. pushrod 46th pivot point

8. Feed device 47. feather

9. pressure spring 50 48. top

10th 49. Clamp. actuating lever

11th Clamping bore 50. arrow

12th Clamping edge 51. lever housing

13th Clamping edge 52, kelly

14th Bearing part 55 53. Approach

15th Bearing opening 54. Clamp

16th Plant section 55. Set screw

17th Pressure spring 56. spring

18th 57. adjusting spring

19th Actuating lever 58. Cap 60

20th Bearing axis 59. Arrow direction

21st 60. Opening edge

22nd Lever part 61. Opening

23. 62. Opening edge

24. Arrow 65 63. rag

25. Direction of the arrow 64. Threaded

26. Arrow 65. Arm

27. Holding forceps 66th free space

28, holding forceps 67th hole

29. Rotary bearing 70 recess 68

30, handle 69 threaded hole

31, spring 70 transverse hole

32. 71. tong stop

33. flange 72 transverse hole

34. receiving opening 75 73. feed opening

35. Ausgußspitze

36. thread

37. recess

38. arrow

Claims

Patentanspr├╝che
1. A dosing gun for use with dental cartridges held in a dental cartridge with the metering device and by a Betätigen Betätigungshebels contained in the dental cartridge material is discharged, characterized in that the Betätigungshebel (19, 49) daß ü via a Klemmstück (10, 54) on a drive rod (6, 42) acts, a
Displacement of in the dental cartridge (5) received herbeif├╝hrt plunger.
2. A dosing gun according to claim 1, characterized daß, one on the drive rod (6) acting compression spring (9) is present.
3. A dosing gun according to claim 1 or 2, characterized in that daß the drive rod (6, 49) is smooth.
4. A dosing gun according to one of Ansprüche 1-3, characterized in that the Klemmstück (10, 54) by a spring daß
(17, 56) is biased.
5. A dosing gun according to one of Anspr├╝che 1-4, characterized in that da├ƒ a push rod (7) for ├ £ transfer of the movement of the drive rod (6, 42) is provided on the plunger.
6. A dosing device according to any one of Ansprüche 1-5, characterized in that the dental cartridge (5) daß in a holding device (3) in the manner of clamping tongs is received.
7. A dosing gun according to claim 6, characterized in that daß the holding device (3) on Antriebskörper (2, 41) of the metering device (1, 40) is fixed lösbar.
8. A dosing gun according to claim 6 or 7, characterized in that daß the push rod (7) in the holding device (3) is movably received.
9. A dosing gun according to one of Ansprüche 1-8, characterized daß that for moving the Betätigungshebels
is adjustable (19, 49) force required.
10. A dosing gun according to one of Ansprüche 1 - 9, characterized in that the Betätigungshebel daß (49) at a Hebelgehäuse (51) is rotatably mounted, which in the Antriebskörper (41) fixed is added.
11. A dosing gun according to claim 10, characterized in that the Klemmstück (54) daß in a free space (66) of Hebelgehäuses (51) is accommodated.
PCT/EP1998/000002 1997-01-04 1998-01-02 Dosing pistol for use with dental cartridges WO1998029054A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19700213A DE19700213A1 (en) 1997-01-04 1997-01-04 Dispensing gun for use with dental cartridges
DE19700213.7 1997-01-04

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98901334A EP0893974A1 (en) 1997-01-04 1998-01-02 Dosing pistol for use with dental cartridges

Publications (1)

Publication Number Publication Date
WO1998029054A1 true WO1998029054A1 (en) 1998-07-09

Family

ID=7816868

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/000002 WO1998029054A1 (en) 1997-01-04 1998-01-02 Dosing pistol for use with dental cartridges

Country Status (3)

Country Link
EP (1) EP0893974A1 (en)
DE (1) DE19700213A1 (en)
WO (1) WO1998029054A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6319002B1 (en) 2000-08-24 2001-11-20 Gary J. Pond Handheld device for applying dental materials

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19906887C1 (en) 1999-02-19 2000-07-27 Voco Gmbh Mixture and application capsule for substances reacting with one another produces and applies dental preparations ready for use
US6375460B1 (en) 2000-02-17 2002-04-23 Voco Gmbh Capsule for mixing and applying dental cement
JP4137281B2 (en) * 1999-04-28 2008-08-20 株式会社ジーシー Dental viscous material dispensers
DE10001513B4 (en) * 1999-09-09 2007-07-12 Tilse, Rainer, Dr.med.dent. A method of processing and hand-held device for filling a dental filling composition based on synthetic resin into a cavity of a tooth
US7014462B1 (en) 1999-09-09 2006-03-21 Rainer Tilse Method and instrument for introducing a dental synthetic resin into a tooth cavity
JP4503455B2 (en) * 2005-02-08 2010-07-14 株式会社ジーシー Dental viscous material dispensers

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2172059A (en) * 1985-03-08 1986-09-10 Ici Plc Extrusion apparatus
US4693684A (en) * 1986-05-30 1987-09-15 Johnson & Johnson Dental Products Company Ratchet type dispenser for dental materials
DE4200044A1 (en) 1991-01-07 1992-07-09 Centrix Inc Dosed dental cartridge
WO1993016653A1 (en) * 1992-02-21 1993-09-02 DELSAUX, Bernard, Georges, Jules Device for delivering a filling material into a tooth cavity

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4472141A (en) * 1981-10-26 1984-09-18 Dragan William B All purpose dental syringe
DE3533367C1 (en) * 1985-09-19 1987-02-05 Hirdes Ruediger Geraet for stuffing tooth cavities
US4708650A (en) * 1986-02-10 1987-11-24 Johnson & Johnson Dental Products Company Direct delivery system for dental materials

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2172059A (en) * 1985-03-08 1986-09-10 Ici Plc Extrusion apparatus
US4693684A (en) * 1986-05-30 1987-09-15 Johnson & Johnson Dental Products Company Ratchet type dispenser for dental materials
DE4200044A1 (en) 1991-01-07 1992-07-09 Centrix Inc Dosed dental cartridge
WO1993016653A1 (en) * 1992-02-21 1993-09-02 DELSAUX, Bernard, Georges, Jules Device for delivering a filling material into a tooth cavity

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6319002B1 (en) 2000-08-24 2001-11-20 Gary J. Pond Handheld device for applying dental materials

Also Published As

Publication number Publication date
EP0893974A1 (en) 1999-02-03
DE19700213A1 (en) 1998-07-09

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