WO2015104100A1 - Canule de rinçage et procédé de fabrication d'une canule de rinçage - Google Patents

Canule de rinçage et procédé de fabrication d'une canule de rinçage Download PDF

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Publication number
WO2015104100A1
WO2015104100A1 PCT/EP2014/076302 EP2014076302W WO2015104100A1 WO 2015104100 A1 WO2015104100 A1 WO 2015104100A1 EP 2014076302 W EP2014076302 W EP 2014076302W WO 2015104100 A1 WO2015104100 A1 WO 2015104100A1
Authority
WO
WIPO (PCT)
Prior art keywords
thickening
cannula
wall segment
hollow needle
outlet opening
Prior art date
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.)
Ceased
Application number
PCT/EP2014/076302
Other languages
German (de)
English (en)
Inventor
Joachim Fritze
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.)
Transcodent GmbH and Co KG
Original Assignee
Transcodent GmbH and Co KG
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
Application filed by Transcodent GmbH and Co KG filed Critical Transcodent GmbH and Co KG
Priority to DE112014006143.3T priority Critical patent/DE112014006143A5/de
Priority to CH00819/16A priority patent/CH710746B1/de
Publication of WO2015104100A1 publication Critical patent/WO2015104100A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/40—Implements for surgical treatment of the roots or nerves of the teeth; Nerve needles; Methods or instruments for medication of the roots

Definitions

  • Rinsing cannula and method for producing a rinsing cannula The invention relates to a rinsing cannula and to a method for producing a rinsing cannula.
  • Rinse cannulas may be used by dentists, for example, to rinse the root canal of a tooth.
  • impurities may have penetrated into the root canal, which must be removed before the next treatment steps.
  • the dentist puts a liquid into the root canal ⁇ so that the impurities are washed out of the root canal.
  • Conventional cannulas in which the liquid exits through an exit opening at the distal end of the cannula are not commonly used for flushing root canals because the axially exiting jet presents an undesirable burden on the apex of the root canal.
  • a rinsing cannula in the form of a hollow needle, the distal end of which is closed, is known. Near the distal end, one or more lateral openings are formed in the wall of the hollow needle, through which the liquid can emerge in the lateral direction.
  • a mechanical processing ⁇ step is required, such as milling.
  • the machining ⁇ processing step can not be made directly to the closed end of the hollow needle, but there is a distance keeping is ⁇ .
  • the distance between the lateral opening and the distal end of the irrigation cannula makes it difficult to flush the deeper areas of the root canal. There is a risk that impurities may remain there which, in the further course, can lead to complications.
  • the invention has the object of providing an irrigation cannula and a method for producing a rinsing cannula vorzu- filters can be rinsed with those underlying areas of the Thaka ⁇ Nals. Based on the cited prior art, the object is achieved with the features of the independent claims. Advantageous embodiments are specified in the subclaims.
  • a distal section of a hollow needle is processed to remove a part of the Na ⁇ delwand, so that a wall segment forms the distal end of the irrigation cannula.
  • a distal portion of the wall segment above the melting temperature is heated from out ⁇ .
  • a Ver ⁇ thickening is formed, so that the thickening forms the distal end of the irrigation cannula.
  • Thickening is a region of the flushing cannula in which the cross-sectional area is greater than the cross-sectional area of the wall segment.
  • the cross-sectional area is perpendicular from ⁇ directed to an axis extending from an outlet opening of the channel of the hollow needle to the thickening he ⁇ stretches.
  • the thickening may be formed so that they are in a projection onto the outlet opening of the channel is at least 30%, preferably at least 50%, more preferably min ⁇ least covers 100% of the cross-sectional area of the channel.
  • the imaginary projection is performed along the axis of the flushing ⁇ cannula in the plane of the exit opening. If the Verdi ⁇ ckung arranged in this way in extension of the outlet opening of the hollow needle, it also helps to redirect the liquid in the lateral direction.
  • the thickening covers not only the cross-sectional area of the channel but the entire cross-sectional area defined by the hollow needle.
  • the thickening may be shaped such that it has a rounded contour in the distal direction.
  • the thickener may therefore be so decor with dark ⁇ tet that they ment does not project over the outer surface of Wandseg-. Further preferably, the jumps
  • the wall segment which remains after the partial removal of the needle wall is not melted over its entire length.
  • a proximal portion of the wall segment is retained.
  • the proximal section defines the area over which the
  • Liquid can escape to the side of the finished rinsing cannula.
  • a distal portion of the wall segment, ie an adjacent to the distal end from ⁇ section of the wall segment is just melted.
  • the wall of the hollow needle is regularly very thin, so that a longer portion of the wall segment must be melted to obtain a sufficient amount of material for forming the thickening.
  • the wall segment can beispiels- example at least 20% of its length, preferably min ⁇ least 30% of its length, more preferably at least 50% of its length to be melted.
  • the length of the wall segment denotes the distance from the outlet opening of the channel to the distal end of the wall segment. The length refers to the state before Schmel ⁇ zen.
  • the wall segment which remains after the partial removal of the wall, preferably extends in relation to its longitudinal direction parallel to the extension of the channel.
  • the wall segment may extend, for example, over a circumferential angle between 100 ° and 260 °, preferably between 150 ° and 210 °, relative to the circumferential direction.
  • the wall segment should be such that it is sufficiently flexible on the one hand, to also follow a curved course of a root canal, and that on the other hand is sufficiently stiff to be well managed in the root canal ⁇ .
  • the length of the wall segment Zvi ⁇ rule of the outlet opening of the channel and the thickener can vary between 0.5 mm and 7 mm, preferably between 0.5 mm and 4 mm.
  • the hollow needle which forms the starting point of the method according to the invention, comprises a proximal end and a distal end.
  • the hollow needle may extend straight between the proximal end and the distal end.
  • the proximal end can be captured in a recording.
  • On ⁇ exception may be designed so that it enables a connection of irrigation cannula to a reservoir for the rinsing liquid.
  • the hollow needle can be connected to the receptacle before or after one of the method steps according to the invention.
  • the receptacle may include a luer approach or a luer lock approach suitable for connection to a commercially available syringe.
  • the hollow needle may consist of a flexible material, so that the Hohlna ⁇ del can be bent elastically to some extent without the channel closes in the interior.
  • the irrigation cannula can then follow a curved course of a root canal.
  • the hollow needle is preferably made of a metal or a metal alloy.
  • the outer diameter of the hollow needle may for example be between 0.1 mm and 1 mm, preferably between 0.2 mm and 0.6 mm.
  • the length of the flushing cannula in the finished state can be, for example, between 20 mm and 60 mm.
  • the length of the rinsing cannula is the distance from the dista ⁇ len end to the inlet into the receptacle.
  • the invention also relates to a rinsing cannula, which is designed in particular for rinsing a root canal of a tooth.
  • a proximal portion of the irrigation cannula is formed by a hollow needle.
  • a distal end of the rinsing cannula is designed as a thickening.
  • a wall segment forms the un ⁇ indirect connection between the thickening and the hollow needle.
  • a wall segment denotes a portion of the purge ⁇ cannula in which there is no closed wall surface, which encloses an interior space all around.
  • the peripheral surface extends over a circumferential angle of less than 360 °.
  • the circumferential angle is between 100 ° and 260 °, more preferably between 150 ° and 210 °. If the wall segment forms the direct connection between the thickening and the hollow needle, there is between the
  • Wall segment and the thickening no section in which ei ⁇ ne wall surface enclosing an interior space around. This is a difference to a cannula, which is subsequently provided with an opening in the side wall. In a subsequently created opening, there is a channel portion between the opening and the closed distal end, in which the interior is surrounded by a wall surface around it. Assuming an imaginary projection of the thickened portion of the outlet opening of the channel of the hollow needle before, the thickening covers at least 30%, preferably at least 50%, more preferably at least 100% of the cross-section ⁇ area of the outlet opening. In the distal direction, the thickening may have a rounded contour.
  • the thickening may be designed so that it does not protrude from the outer surface of the wall segment. Further preferably, the thickening also does not project with respect to the contour of the hollow needle.
  • the volume of the thickening may correspond to at least 30%, preferably at least 50%, more preferably at least 100%, of the volume of the wall segment.
  • the invention also relates to a flushing device, which comprises a flushing cannula according to the invention and a receptacle.
  • a proximal end of the rinsing cannula is set in the on ⁇ takeover.
  • the receptacle may be provided for connection to ei ⁇ ner according to the invention syringe or other reservoir for a liquid.
  • the receptacle may for this purpose have a luer approach or a luer lock approach.
  • Figure 1 is a side view of a flushing ⁇ cannula according to the invention, the proximal end is enclosed in a receptacle.
  • FIG. 2 shows the rinsing cannula from FIG. 1 in a view from above;
  • FIG. 3 shows a syringe with the flushing cannula from FIG. 1;
  • FIG. 4 shows an enlarged detail of FIG. 2
  • Fig. 5 is an enlarged detail of Fig. 1;
  • Figure 6 is a schematic representation of the invention shown SEN manufacturing process.
  • Fig. 7 shows a distal portion of a rinsing cannula inserted into a root canal of a tooth.
  • FIG. 1 Shown in FIG. 1 is a flushing cannula 14, which extends from a proximal end 15 to a distal end 16.
  • the proximal end 15 of the irrigation cannula 14 is enclosed in egg ⁇ ner recording 17th
  • the receptacle 17 is shown in FIG. 3 to the rinsing cannula 14 to a syringe 18 to ver ⁇ bind.
  • the syringe 18 comprises a receiving space 19 for a liquid. At its the Spülkanüle 14 technicallylie ⁇ ing end of the receiving space 19 is sealed with a piston 20. By pushing in and out of the piston 20, the volume of the receiving space 19 can be reduced or increased.
  • the syringe 18 comprises a delivery tip, which is covered in Fig. 3 of the receptacle 17.
  • the outside of the off ⁇ bring top is formed as a Luer cone.
  • the receptacle 17 of the flushing cannula 14 has on its inside a matching Luer approach, via which the receptacle 17 is connected to the syringe 18.
  • Through the delivery tip of the syringe 18 through ⁇ extends a channel which forms a connection between the receiving space 19 of the syringe 18 and a Ka Nal, which extends inside the flushing cannula 14.
  • the piston 20 is pushed into the syringe 18, the volume of the receiving space 19, and a corresponding amount of liquid is reduced ⁇ de moves through the irrigation cannula 14 into the direction of the distal end of the sixteenth
  • the flushing cannula 14 comprises a proximal section 21, in which the flushing cannula 14 is designed as a hollow needle 25.
  • the channel, which extends inside the hollow needle 25, opens in an outlet opening 22.
  • the distal end 16 of the flushing cannula 14 is formed by a thickening 23.
  • the thickening 23 has approximately spherical shape and is solid from the same material as the hollow needle 25 in the proximal Ab ⁇ section 21 of the cannula. Between the thickening 23 and the outlet opening 22 of the hollow needle 25 extends
  • Wall segment 24 which forms a direct connection between the thickening 23 and the hollow needle 25.
  • the Wandseg ⁇ ment 24 forms an extension of the wall of the hollow needle 25.
  • the wall segment 24 does not extend over a circumferential angle of 360 °, but only over a circumferential angle of 180 ° around the channel.
  • the wall segment 24 merges directly with the verdi ⁇ ck 23.
  • the diameter of the thickening 23 corresponds to the outer diameter of the hollow needle 25.
  • the thickening 23 is exactly in extension of the hollow needle 25, so that the thickening 23 does not project relative to the contour defined by the hollow needle 25 in cross section. In the case of a projection into the plane of the outlet opening 22 covers the thickening 23, the outlet ⁇ opening 22 completely.
  • the rinsing cannula 14 can be introduced into a root canal of a tooth, without injury occurring in the tooth or in the surrounding tissue.
  • the emerging from the outlet opening 22 liquid is deflected in the region of the wall segment 24 to the side.
  • the liquid is prevented from forming a sharp beam in axia ⁇ ler direction.
  • the liquid acts in ers ⁇ ter line on the walls that surround the root canal, currency ⁇ rend the apex of the root canal is not exposed to increased loads.
  • the flushing cannula 14 is made of a metal alloy.
  • the hollow needle 25 can be elastically deformed without the channel in the interior of the hollow needle 25 closes. As FIG. 7 shows, the flushing cannula 14 can follow a curved course of a root canal in a tooth 26.
  • the preparation of the irrigation cannula according to the invention begins with a conventional hollow needle 25 shown in FIG. 6A.
  • a distal section of the hollow needle 25 part of the needle wall is removed, so that a wall segment 24 stops.
  • the proximal end of the wall segment 24 corresponds to the outlet opening 22 of the hollow needle 25.
  • the rinsing cannula 24 according to the invention is in an intermediate state, which is shown in FIG. 6B.
  • the distal end 16 of the irrigation cannula sharp-edged, so that there would be a risk of injury when used in the mouth of the patient.
  • a distal portion of the wall segment 24 is heated above the melting temperature, so that the metal alloy liquefies.
  • the sharp-edged shape is triggered and a thickening 23 with a rounded contour is formed.
  • the liquefied material pulls together by itself to the Verdi ⁇ ckung 23. If necessary, this process can be assisted by properly aligning the flushing cannula 14 with gravity.
  • the wall segment 24 shown in Figure 6B is liquefied more than 50% of its length.
  • the volume of the thickening 23 is consequently greater than the volume of the part of the wall segment 24 remaining in FIG. 6C.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Neurology (AREA)
  • Neurosurgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

L'invention concerne un procédé de fabrication d'une canule de rinçage (14). Pour cela, on façonne un segment distal d'une aiguille creuse (25) en enlevant une partie de la paroi de l'aiguille afin de réaliser un segment de paroi (24) qui forme l'extrémité distale (16) de la canule de rinçage (14). On chauffe un segment distal du segment de paroi (24) au-delà de sa température de fusion. A partir du matériau fondu, on réalise un renflement (23) qui forme l'extrémité distale (16) de la canule de rinçage (14). L'invention concerne en outre une canule de rinçage (14) correspondante. Cette canule de rinçage est adaptée pour rincer les segments profonds d'un canal radiculaire d'une dent (26).
PCT/EP2014/076302 2014-01-09 2014-12-02 Canule de rinçage et procédé de fabrication d'une canule de rinçage Ceased WO2015104100A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112014006143.3T DE112014006143A5 (de) 2014-01-09 2014-12-02 Spülkanüle und Verfahren zum Herstellen einer Spülkanüle
CH00819/16A CH710746B1 (de) 2014-01-09 2014-12-02 Verfahren zum Herstellen einer Spülkanüle, Spülkanüle und Spüleinrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14150563.6 2014-01-09
EP14150563 2014-01-09

Publications (1)

Publication Number Publication Date
WO2015104100A1 true WO2015104100A1 (fr) 2015-07-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/076302 Ceased WO2015104100A1 (fr) 2014-01-09 2014-12-02 Canule de rinçage et procédé de fabrication d'une canule de rinçage

Country Status (3)

Country Link
CH (1) CH710746B1 (fr)
DE (1) DE112014006143A5 (fr)
WO (1) WO2015104100A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110177520A (zh) * 2016-11-18 2019-08-27 亚历山大·卡佩利 用于根管治疗和再治疗的超声波器械
EP3711705A1 (fr) * 2019-03-22 2020-09-23 B&L Biotech, Inc. Procédé d'amélioration de la ductilité d'une aiguille pour dispositifs de traitement de canal radiculaire et procédé de fabrication d'une aiguille pour dispositifs de traitement de canal radiculaire comprenant le procédé d'amélioration de la ductilité d'une aiguille pour dispositifs de traitement de canal radiculaire
WO2023178886A1 (fr) * 2022-03-25 2023-09-28 何旭 Tête d'aiguille de rinçage à refoulement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4276880A (en) * 1978-09-14 1981-07-07 Oscar Malmin Cannula and process
WO1992005816A1 (fr) * 1990-09-28 1992-04-16 Gebrüder Sulzer Aktiengesellschaft Canule pour utilisation medicale et procede pour la fabrication de telles canules
US6494713B1 (en) * 1999-11-08 2002-12-17 Gary J. Pond Nickel titanium dental needle
US20090004621A1 (en) * 2007-06-27 2009-01-01 Nancy Quan Endodontic Irrigation System

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4276880A (en) * 1978-09-14 1981-07-07 Oscar Malmin Cannula and process
WO1992005816A1 (fr) * 1990-09-28 1992-04-16 Gebrüder Sulzer Aktiengesellschaft Canule pour utilisation medicale et procede pour la fabrication de telles canules
US6494713B1 (en) * 1999-11-08 2002-12-17 Gary J. Pond Nickel titanium dental needle
US20090004621A1 (en) * 2007-06-27 2009-01-01 Nancy Quan Endodontic Irrigation System

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110177520A (zh) * 2016-11-18 2019-08-27 亚历山大·卡佩利 用于根管治疗和再治疗的超声波器械
EP3711705A1 (fr) * 2019-03-22 2020-09-23 B&L Biotech, Inc. Procédé d'amélioration de la ductilité d'une aiguille pour dispositifs de traitement de canal radiculaire et procédé de fabrication d'une aiguille pour dispositifs de traitement de canal radiculaire comprenant le procédé d'amélioration de la ductilité d'une aiguille pour dispositifs de traitement de canal radiculaire
US11202688B2 (en) 2019-03-22 2021-12-21 B&L Biotech, Inc. Method of improving ductility of needle for root canal treatment devices and method of manufacturing needle for root canal treatment devices including method of improving ductility of needle for root canal treatment devices
WO2023178886A1 (fr) * 2022-03-25 2023-09-28 何旭 Tête d'aiguille de rinçage à refoulement

Also Published As

Publication number Publication date
CH710746B1 (de) 2018-05-15
DE112014006143A5 (de) 2016-09-22

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