CH621476A5 - Instrument for incision or cutting for surgeons - Google Patents
Instrument for incision or cutting for surgeons Download PDFInfo
- Publication number
- CH621476A5 CH621476A5 CH529778A CH529778A CH621476A5 CH 621476 A5 CH621476 A5 CH 621476A5 CH 529778 A CH529778 A CH 529778A CH 529778 A CH529778 A CH 529778A CH 621476 A5 CH621476 A5 CH 621476A5
- Authority
- CH
- Switzerland
- Prior art keywords
- coating
- point
- steel
- sharp
- instrument
- Prior art date
Links
- 238000000576 coating method Methods 0.000 claims abstract description 23
- 239000011248 coating agent Substances 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims abstract description 7
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 claims abstract description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 10
- 229910052804 chromium Inorganic materials 0.000 claims description 10
- 239000011651 chromium Substances 0.000 claims description 10
- 230000007797 corrosion Effects 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000005336 cracking Methods 0.000 claims description 2
- 238000000151 deposition Methods 0.000 claims description 2
- 230000008021 deposition Effects 0.000 claims description 2
- 238000004544 sputter deposition Methods 0.000 claims description 2
- 238000001356 surgical procedure Methods 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 238000007738 vacuum evaporation Methods 0.000 claims description 2
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/32—Surgical cutting instruments
- A61B17/3209—Incision instruments
- A61B17/3211—Surgical scalpels, knives; Accessories therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/013—Instruments for compensation of ocular refraction ; Instruments for use in cornea removal, for reshaping or performing incisions in the cornea
- A61F9/0133—Knives or scalpels specially adapted therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00107—Coatings on the energy applicator
- A61B2018/00119—Coatings on the energy applicator with metal oxide nitride
Landscapes
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Vascular Medicine (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Physical Vapour Deposition (AREA)
Abstract
This instrument, in particular for ophthalmologists, has a steel rod (1) with a cutting edge (4). A coating (3) of titanium carbide, nitride or carbonitride is partially removed at the cutting tip (2) so as to denude the steel at this part. An oblique angle with the longitudinal axis of the rod and the cutting edge (4) is thus formed. <IMAGE>
Description
**ATTENTION** debut du champ DESC peut contenir fin de CLMS **.
REVENDICATIONS
1. Instrument d'incision ou de coupe pour chirurgiens, notamment pour ophtalmologues, présentant une tige en acier avec une pointe tranchante, caractérisé par un revêtement en carbure, nitrure ou carbonitrure de titane et par le fait qu'il présente une arête tranchante constituée par une coupe oblique par rapport à l'axe longitudinal de la tige mettant à nu l'acier de cette partie.
2. Instrument selon la revendication 1, caractérisé par une couche de chrome entre la surface de l'acier et ledit revêtement.
3. Instrument selon la revendication 1 ou 2, caractérisé par le fait que l'épaisseur du revêtement, le cas échéant la couche de chrome comprise, est de 3 à 10 p.
La présente invention concerne un instrument d'incision ou de coupe pour chirurgiens, notamment pour ophtalmologues, présentant une tige en acier avec une pointe tranchante.
De tels instruments sont connus et utilisés notamment dans l'ophtalmologie. Leur pointe tranchante en acier permet de faire des incisions très précises, notamment pour la chirurgie de l'oeil.
Toutefois, cette pointe a besoin d'être aiguisée souvent et, de plus, elle peut être soumise à des phénomènes de corrosion et d'usure.
Le but de la présente invention est d'améliorer les instruments mentionnés, afin de leur conférer une arête tranchante qui ne nécessite pas un aiguisage trop fréquent et qui n'est pas soumise à des phénomènes de corrosion. De plus, l'invention permet d'obtenir de tels instruments d'un aspect parfait, éventuellement coloré.
Pour atteindre ce but, l'instrument selon l'invention présente les caractères mentionnés dans la revendication 1.
Afin d'améliorer encore la résistance à l'usure, on peut prévoir une couche de chrome entre la surface de l'acier et ledit revêtement.
Normalement, l'épaisseur du revêtement, le cas échéant la couche de chrome comprise, est de 3 à 10 1l, et l'épaisseur de la partie enlevée pour mettre à nu l'acier est de préférence de 10 à lOou.
On peut enlever ladite partie de la pointe par meulage.
Les revêtements en carbure de titane (gris), nitrure de titane (jaune) ou carbonitrure de titane (violet) peuvent être obtenus de n'importe quelle manière connue, par exemple par évaporation sous vide, pulvérisation cathodique, déposition ionique ou réaction chimique en phase gazeuse.
Si l'on dépose d'abord, de manière connue, une couche de chrome de quelques microns d'épaisseur sur la pointe tranchante en acier, et ensuite une couche de carbure, nitrure ou carbonitrure de titane, on obtient une parfaite adhérence du revêtement avec une très bonne résistance à l'usure.
Le dessin annexé montre à titre d'exemple une forme d'exécution de l'invention.
Les fig. 1, 2 et 3 montrent des vues latérales d'instruments selon l'invention.
La fig. 4 montre une coupe, à une échelle plus grande, d'une pointe avec revêtement avant meulage.
La fig. 5 montre une coupe, analogue à celle de la fig. 4, d'une pointe après meulage.
L'instrument représenté par la fig. 1 présente une tige 1, une
pointe 2 partiellement enlevée et une arête tranchante 4.
Dans les fig. 2 et 3, on voit une vue latérale d'instruments
connus, présentant une tige 1 et une pointe tranchante 2 mais sans
arête tranchante. On pourrait transformer ces instruments selon
l'invention.
La fig. 4 montre en coupe, à une échelle nettement plus grande
que nature, une pointe 2 avec un revêtement 3, déposé comme
décrit ci-dessus. L'épaisseur de ce revêtement peut varier de 3 à
10 u Il faut noter ici qu'il n'est pas possible de meuler la pointe
du revêtement pour obtenir une pointe bien aiguisée. Le meulage
pourrait provoquer des craquelures sur la pointe, ce qui rendrait
l'instrument inutilisable.
Le meulage se fait donc comme démontré dans la fig. 5, c'est
à-dire de manière à obtenir une arête tranchante 4 qui forme un
angle oblique.
** ATTENTION ** start of the DESC field may contain end of CLMS **.
CLAIMS
1. An incision or cutting instrument for surgeons, in particular for ophthalmologists, having a steel rod with a sharp point, characterized by a coating of titanium carbide, nitride or carbonitride and by the fact that it has a sharp edge formed by an oblique cut with respect to the longitudinal axis of the rod exposing the steel of this part.
2. Instrument according to claim 1, characterized by a chromium layer between the surface of the steel and said coating.
3. Instrument according to claim 1 or 2, characterized in that the thickness of the coating, if necessary the chromium layer included, is 3 to 10 p.
The present invention relates to an incision or cutting instrument for surgeons, in particular for ophthalmologists, having a steel rod with a sharp point.
Such instruments are known and used in particular in ophthalmology. Their sharp steel point allows very precise incisions to be made, especially for eye surgery.
However, this point needs to be sharpened often and, moreover, it can be subjected to corrosion and wear phenomena.
The object of the present invention is to improve the instruments mentioned, in order to give them a cutting edge which does not require too frequent sharpening and which is not subject to corrosion phenomena. In addition, the invention makes it possible to obtain such instruments with a perfect appearance, possibly colored.
To achieve this object, the instrument according to the invention has the characteristics mentioned in claim 1.
In order to further improve the wear resistance, a layer of chromium can be provided between the surface of the steel and said coating.
Normally, the thickness of the coating, if applicable the chromium layer included, is from 3 to 10 11, and the thickness of the part removed to expose the steel is preferably from 10 to 10.
Said part of the tip can be removed by grinding.
The coatings of titanium carbide (gray), titanium nitride (yellow) or titanium carbonitride (purple) can be obtained in any known manner, for example by vacuum evaporation, sputtering, ion deposition or chemical reaction by gas phase.
If, first, in a known manner, a layer of chromium a few microns thick is deposited on the sharp steel point, and then a layer of titanium carbide, nitride or carbonitride, a perfect adhesion of the coating is obtained. with very good wear resistance.
The accompanying drawing shows by way of example an embodiment of the invention.
Figs. 1, 2 and 3 show side views of instruments according to the invention.
Fig. 4 shows a section, on a larger scale, of a point with coating before grinding.
Fig. 5 shows a section, similar to that of FIG. 4, a point after grinding.
The instrument shown in fig. 1 has a rod 1, a
tip 2 partially removed and a sharp edge 4.
In fig. 2 and 3, we see a side view of instruments
known, having a rod 1 and a sharp point 2 but without
sharp edge. We could transform these instruments according to
the invention.
Fig. 4 shows in section, on a much larger scale
natural, a point 2 with a coating 3, deposited as
described above. The thickness of this coating can vary from 3 to
10 u It should be noted here that it is not possible to grind the point
of the coating to obtain a sharp point. Grinding
could cause cracking on the tip, which would make
unusable instrument.
Grinding is therefore done as shown in fig. 5 is
ie so as to obtain a sharp edge 4 which forms a
oblique angle.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH529778A CH621476A5 (en) | 1978-05-16 | 1978-05-16 | Instrument for incision or cutting for surgeons |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH529778A CH621476A5 (en) | 1978-05-16 | 1978-05-16 | Instrument for incision or cutting for surgeons |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH621476A5 true CH621476A5 (en) | 1981-02-13 |
Family
ID=4291231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH529778A CH621476A5 (en) | 1978-05-16 | 1978-05-16 | Instrument for incision or cutting for surgeons |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH621476A5 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0216538A1 (en) * | 1985-09-06 | 1987-04-01 | MICRA Ltd. | Surgical needle |
| US4981756A (en) * | 1989-03-21 | 1991-01-01 | Vac-Tec Systems, Inc. | Method for coated surgical instruments and tools |
| US5152774A (en) * | 1988-10-17 | 1992-10-06 | Schroeder William A | Surgical instrument having a toughened wearing surface and method of making the same |
| EP0682917A1 (en) * | 1994-04-22 | 1995-11-22 | Institut Straumann Ag | Screw for holding together two bone fragments and surgical equipment for inserting the screw |
| EP1212995A3 (en) * | 2000-12-11 | 2004-02-25 | Optikon 2000 S.p.a. | Emulsification tip for eye surgery |
| EP1634535A1 (en) * | 2004-09-13 | 2006-03-15 | Mani, Inc. | Medical needle and cutting tool |
| WO2011141169A1 (en) | 2010-05-11 | 2011-11-17 | Medacta International S.A. | Substrate for wear-proof orthopaedic joints, of non ferrous metal with a nitride-based coating |
-
1978
- 1978-05-16 CH CH529778A patent/CH621476A5/en not_active IP Right Cessation
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0216538A1 (en) * | 1985-09-06 | 1987-04-01 | MICRA Ltd. | Surgical needle |
| US5152774A (en) * | 1988-10-17 | 1992-10-06 | Schroeder William A | Surgical instrument having a toughened wearing surface and method of making the same |
| US4981756A (en) * | 1989-03-21 | 1991-01-01 | Vac-Tec Systems, Inc. | Method for coated surgical instruments and tools |
| EP0682917A1 (en) * | 1994-04-22 | 1995-11-22 | Institut Straumann Ag | Screw for holding together two bone fragments and surgical equipment for inserting the screw |
| EP1212995A3 (en) * | 2000-12-11 | 2004-02-25 | Optikon 2000 S.p.a. | Emulsification tip for eye surgery |
| US7018389B2 (en) | 2000-12-11 | 2006-03-28 | Optikon 2000 S.P.A. | Emulsificated tip for oculistic surgery, particularly for phacoemulsification of cataract |
| EP1634535A1 (en) * | 2004-09-13 | 2006-03-15 | Mani, Inc. | Medical needle and cutting tool |
| US7662170B2 (en) * | 2004-09-13 | 2010-02-16 | Mani, Inc. | Medical needle and cutting tool |
| WO2011141169A1 (en) | 2010-05-11 | 2011-11-17 | Medacta International S.A. | Substrate for wear-proof orthopaedic joints, of non ferrous metal with a nitride-based coating |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5630826A (en) | Tubular surgical cutting instruments with coating | |
| US5061238A (en) | Surgical cutting instrument with titanium nitride coating on an inner tubular member | |
| CH621476A5 (en) | Instrument for incision or cutting for surgeons | |
| US7963192B2 (en) | Surgical scissors and method for the manufacture of surgical scissors | |
| US5160318A (en) | Surgical cutting instrument with ceramic coating on an inner tubular member | |
| JP6609621B2 (en) | Razor blade coating | |
| US2816552A (en) | Teat bistoury with improved cutter blade adjusting means | |
| CA2403346A1 (en) | Scalpel blade having high sharpness and toughness | |
| DE69119902T2 (en) | RAZOR BLADE TECHNOLOGY | |
| EP0167800A1 (en) | Hard metallic watch case having a wear-resistant coating | |
| JP4949830B2 (en) | Razor blade | |
| JPH119857A (en) | Razor blade and manufacture thereof | |
| DE19735962A1 (en) | Guide bush and method for coating its inner surface with a hard carbon film | |
| FR2673391A1 (en) | Method of manufacturing cutting blades and blades obtained | |
| JPS62181836A (en) | Manufacturing method for cutting edge formed with ultra-hard film | |
| FR2798277A1 (en) | DENTAL REALIZATION TYPE CANALARY INSTRUMENT AND METHODS OF MAKING THE SAME | |
| EP0077226B1 (en) | Handtool for removing material from a workpiece, especially for deburring and chamfering | |
| FR3119308A1 (en) | Screw for osteosynthesis with angular indexing in relation to the screwdriver and with universal compatibility | |
| US20250128336A1 (en) | Coated tool and cutting tool | |
| CH672171A5 (en) | ||
| Tadayyoni et al. | Normal and surface-enhanced Raman investigations of carbon materials | |
| CN117529380A (en) | Coated tools and cutting tools | |
| BE431901A (en) | ||
| JPH0596416A (en) | Ball end mill | |
| JP3133067U (en) | Barber scissors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUE | Assignment |
Owner name: MORIA-DUGAST S.A. |
|
| PL | Patent ceased | ||
| PL | Patent ceased |