WO2012043447A1 - エッジを有する医療用刃物 - Google Patents
エッジを有する医療用刃物 Download PDFInfo
- Publication number
- WO2012043447A1 WO2012043447A1 PCT/JP2011/071832 JP2011071832W WO2012043447A1 WO 2012043447 A1 WO2012043447 A1 WO 2012043447A1 JP 2011071832 W JP2011071832 W JP 2011071832W WO 2012043447 A1 WO2012043447 A1 WO 2012043447A1
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- WO
- WIPO (PCT)
- Prior art keywords
- edge
- component
- trocar
- color
- plane
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
- A61B17/06066—Needles, e.g. needle tip configurations
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3209—Incision instruments
- A61B17/3211—Surgical scalpels, knives; Accessories therefor
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/16—Polishing
- C25F3/22—Polishing of heavy metals
- C25F3/24—Polishing of heavy metals of iron or steel
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00526—Methods of manufacturing
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
- A61F2250/005—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in colour
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- 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
Definitions
- the present invention relates to a medical blade having a sharp edge with improved piercing property when incising a living tissue.
- a knife or trocar that pierces the eyeball and incises the cornea or sclera is used, and a suture needle that pierces and incises the muscle or skin is used to suture the affected area.
- a medical blade including these knives, trocars, or suture needles has a sharp tip, a sharp edge extending from the tip, a plane constituting the edge, and a body portion extending continuously from the plane. .
- the edge and the plane portion have a polygonal cross section such as a triangle, a quadrangle, or a pentagon, and the type of the target medical knife, that is, the knife is a knife, a trocar, or a suture needle.
- the cross-sectional shape is set correspondingly. Regardless of the cross-sectional shape of the medical blade, at least two edges are formed starting from the tip (see, for example, Patent Document 1).
- An object of the present invention is to provide a medical blade having an edge with small piercing resistance.
- the present inventor has made many development experiments. As a result, it has been found that the piercing resistance is reduced by forming a sharp edge. And it confirmed that a sharp edge was realizable by performing the process in the electrolytic polishing process or chemical polishing process performed after a grinding
- the medical blade having an edge according to the present invention has a sharp edge for incising a living tissue, and a plane part constituting the edge, and the color of a part of the plane part along the edge Is different from the color of other plane portions.
- the difference between the color of a part of the plane portion along the edge and the color of the other plane portion is based on the difference in the thickness of the oxide film.
- the medical blade having another edge is made of austenitic stainless steel, has a sharp edge for incising a living tissue, and a flat surface portion constituting the edge, and a part of the flat surface along the edge
- the chrome content of the portion is higher than the chrome content of the other flat portions.
- the medical blade having an edge according to the present invention (hereinafter simply referred to as “blade”) can form a sharp edge to reduce piercing resistance. For this reason, the fatigue of the doctor can be reduced during ophthalmic surgery or surgery, and an accurate incision can be made.
- the fact that a sharp edge is formed can be recognized by confirming the color difference between a part of the plane part and the other plane part along the edge in the plane part constituting the blade, so at least A reliable inspection can be performed at the time of manufacture of a cutter.
- a sharp edge is formed by comparing the chrome content of a part of the plane portion along the edge with the chrome content of the other plane portion. can do.
- the present invention is capable of reducing the puncture resistance and reducing the fatigue of the doctor and performing an accurate operation when piercing through a living tissue during an operation such as a knife, a trocar, or a suture needle with a blade. is there.
- a sharp edge for incising a living tissue is formed by the intersection of two planes. And the one part plane part along an edge is exhibiting the color different from the color of another plane part. This difference in color corresponds to the difference in the thickness of the oxide film, and is due to shortening of the processing time in the electrolytic polishing process or chemical polishing process (electrolytic polishing etc.) performed in the blade manufacturing process. ing.
- the material component is changed in addition to the color difference.
- the blade according to the present invention can be recognized by recognizing a color difference between a part of the planar portions along the edge and other planar portions or by quantitatively analyzing the material components.
- the blade according to the present invention it is possible to make the piercing resistance sufficiently small as compared with the conventionally used blade.
- a metal represented by carbon steel or martensitic stainless steel that can be expected to be hardened by heat treatment, or an austenitic stainless steel that cannot be expected to be hardened by heat treatment is selectively used. It is possible to use it. And it is preferable to comprise the cutter which concerns on this invention by passing through the process of the shape with respect to the target cutter, and a hardening process by the optimal process according to the selected material, respectively.
- the trocar A shown in FIGS. 1 and 2 is a blade for piercing the eyeball and incising the cornea and sclera during ophthalmic surgery.
- SUS302 which is an austenitic stainless steel
- the wire is drawn by cold drawing at a predetermined area reduction ratio, thereby having a structure stretched in a fiber shape and processing. It is formed in a round bar shape with high strength by curing.
- the trocar A is configured in a straight needle shape by pressing the end of the round bar-shaped material processed as described above and then grinding or directly grinding.
- the blade according to the present invention includes a bladed suture needle or knife having an incision function, and any of them can have the same configuration as the trocar A described below. is there.
- the trocar A has a pair of sharp edges by intersecting the two plane portions 2 of the plane portion 2 shown in FIG. 1 and the plane portion (not shown) on the back side of the sheet of FIG. 1 is configured.
- the cross-sectional shape of the portion corresponding to the edge 1 (the cross-sectional shape of the portion where the edge 1 of the trocar A exists) is formed in a rhombus, and the width direction (in FIG. 1)
- a pair of ridges 3 are formed on both sides in the direction of the arrow X) and have no cutting function on both sides in the thickness direction (direction perpendicular to the paper surface of FIG. 1) perpendicular to the width direction. Is formed.
- the back side of the trocar A in FIG. 1 has the same shape as that shown in FIG.
- the edge 1 and the flat portion 2 converge toward the sharp tip 4. That is, the edge 1 and the flat portion 2 are formed to be inclined with the pointed end 4 as a starting point. Therefore, the pair of edges 1 and the pair of peaks 3, the edges 1, and the plane portion 2 constituting the peaks 3 are separated from each other according to their respective inclinations and are connected to the trunk portion 5.
- the trunk portion 5 is formed in a round bar shape having a preset diameter, whereby the trocar A is formed in a straight needle shape.
- a boundary 6 is formed between the plane portion 2 and the trunk portion 5 when the plane portion 2 constituting the edge 1 is separated from the edge 1 and connected to the barrel portion 5. Is done.
- This boundary 6 constitutes an edge having a dull angle due to the intersection of the outer peripheral surface of the plane part 2 and the body part 5.
- a minute flat surface portion 7 is formed on the tip 4 side of the two flat surface portions 2 formed on one side in the thickness direction, and the minute flat surface portion 7 is formed.
- the tip 4 composed of the three surfaces of the two plane portions 2 and the minute plane portion 7 is formed. Therefore, the tip 4 is always one point, and it is possible to improve the positional accuracy when the tissue is first pierced and reduce the piercing resistance.
- a part of the flat part 2 along the edge 1 that is, a flat part 2a (a part of the flat part 2a formed between the one-dot chain line 10 and the edge 1 shown in FIGS. ) Exhibits a color different from the color of the other flat surface portion 2b.
- the alternate long and short dash line 10 indicates the boundary between the plane portion 2a and the other plane portion 2b for convenience. is there.
- the inventors of the present invention have investigated the cause of this color difference, and it has been found that it is caused by the difference in the thickness of the oxide film on the flat surface portion 2a and the flat surface portion 2b. That is, since the oxide film is thin at the plane portion 2a, the color is relatively close to a metal material, and at the plane portion 2b, the color is close to a golden color because the oxide film is thick. In the photograph of FIG. 2, the flat portion 2a has a dark color and the flat portion 2b has a white color. This is due to illumination at the time of photographing.
- the plane portions 2 a having different colors are formed not only on a part of the plane portion 2 along the edge 1 but also on a portion along the boundary 6 and a portion along the peak 3. That is, the flat surface portion 2 a is formed over substantially the entire area around the flat surface 2. However, as a blade, it is possible to sufficiently reduce the piercing resistance if the flat portion 2a having a different color from the other flat portions 2b is formed on a part of the flat portion 2 along the edge 1.
- trocar A is formed by drawing a round bar-shaped material made of austenitic stainless steel having a predetermined strength by cold drawing to a desired length. Thereafter, the end portion on one side of the material is pressed to form a cross section into a rhombus, and the formed portion is ground to form the flat surface portion 2 so that the edge 1 is formed at the portion where the two flat surface portions 2 intersect. Is configured. Further, a peak 3 is formed by a portion where the two flat portions 2 intersect or a pressed surface, and a boundary 6 is formed at a portion where one flat portion 2 and the outer peripheral surface of the trunk portion 5 intersect.
- burrs inevitably adhere to the edge 1 and the peak 3, and the boundary 6 between the flat portion 2 and the trunk portion 5 by grinding the material. Therefore, by reducing at least the burrs adhering to the edge 1, it is possible to remove the burrs by a process such as electrolytic polishing in a short time. Thus, the processing rate during the grinding operation is reduced in order to reduce the attached burrs.
- the reduction of the processing rate can be realized by reducing the load on the material during grinding. For example, if the processing rate in grinding is about 1/10 that in grinding a conventional trocar, the burrs attached to the edge 1 can be made sufficiently small.
- the processing rate is not limited and should be set as appropriate according to the target blade.
- burrs are removed in a short time when performing a polishing process such as electrolytic polishing.
- a polishing process such as electrolytic polishing.
- the processing time in the electrolytic polishing or the like is reduced. It can be shortened.
- the flat portion 2 is not uniformly polished, and the polishing process becomes uneven. That is, there is a difference in the degree of progress of polishing between the flat portion 2a along the edge 1 and the other flat portion 2b.
- the difference in the degree of progress in the flat portion 2 is caused by a difference in the thickness of the oxide film, a difference in material components, and a difference in surface roughness. That is, since the thickness of the material in the flat portion 2a along the edge 1 is thin, electrolytic polishing or the like proceeds quickly, the amount of elution of the iron component increases, the chrome component increases, the oxide film is thin, and the surface Roughness is reduced. On the other hand, in the other plane portion 2b, since the thickness of the material is larger than that of the plane portion 2a, the progress of electrolytic polishing or the like is slower than the plane portion 2a, and the elution amount of the iron component is reduced. The chrome component is reduced, the oxide film is thick, and the surface roughness is increased.
- the plane portion 2a along the edge 1 and the other plane portion 2b have different colors due to the difference in thickness of the oxide film, and the chrome component in the plane portion 2a is the chrome component in the plane portion 2b. More than.
- FIG. 3 is a diagram showing a trocar A according to the present embodiment and a sampling site where a metal component is quantitatively analyzed.
- FIG. 4 is a diagram showing a trocar according to a comparative example and a sampling site where a metal component is quantitatively analyzed. Spectra 1 to 5 are arranged in a plane portion along the edge, and spectra 6 to 10 are arranged in another plane portion.
- the material after the surface grinding is electropolished.
- the electrolytic polishing was performed by immersing the flat portion 2 over the entire length for about 35 seconds and then immersing the length portion corresponding to the edge 1 for about 5 seconds. By this electrolytic polishing treatment, all burrs adhering to the edge 1 were removed. After the electropolishing was completed, spectra 1 to 10 were quantitatively analyzed by X-ray analysis.
- the chromium component was 31.38%, the iron component was 60.08%, and the nickel component was 8.64%. Further, in spectrum 2, the chromium component was 31.45%, the iron component was 59.36%, and the nickel component was 9.19%. Further, in spectrum 3, the chromium component was 31.75%, the iron component was 60.10%, and the nickel component was 8.15%. In spectrum 4, the chromium component was 29.10%, the iron component was 61.33%, and the nickel component was 9.57%. Moreover, in the spectrum 5, the chromium component was 28.035%, the iron component was 63.41%, and the nickel component was 8.56%.
- the chromium component was 26.55%, the iron component was 63.57%, and the nickel component was 9.88%. Further, in the spectrum 7, the chromium component was 26.47%, the iron component was 63.17%, and the nickel component was 10.36%. Further, in the spectrum 8, the chromium component was 28.49%, the iron component was 61.47%, and the nickel component was 10.04%. Moreover, in the spectrum 9, the chromium component was 27.40%, the iron component was 62.32%, and the nickel component was 10.28%. Further, in the spectrum 10, the chromium component was 25.07%, the iron component was 65.16%, and the nickel component was 9.77%.
- the flat portion 2a along the edge 1 has a higher chromium content than the other flat portions 2b (spectrums 6 to 10).
- the elution of the iron component increases and the chrome component increases (31.38%, 31.45%, 31 respectively).
- the four flat portions approach each other, so that a relatively thick edge 1 is formed, so that the elution of the iron component is reduced and the chrome component is reduced. (29.10% and 28.035% respectively).
- the chrome content of spectrum 1 (31.38%) and the chrome content of spectra 6 to 10 (each of which is a portion where thin edge 1 is formed by only two plane portions 2 among plane portions 2a (respectively) , 26.55%, 26.47%, 28.49%, 27.40%, 25.07%), 4.83%, 4.91%, 2.89%, 3.98 respectively. %, 6.31% difference.
- the portion of the flat portion 2a where the thin edge 1 is formed only by the two flat portions 2 has a higher chrome content than the tip portion where the four plane portions are close to each other (positions such as spectra 4 to 5), and the plane portion 2b (especially in the vertical direction from the edge 1). It was possible to conclude that the content of chrome was clearly higher than that in the region separated by 100 ⁇ m or more.
- the planar portion was immersed over the entire length for about 50 seconds at a current density higher than that of the above-described example, and the electrolytic polishing treatment was performed.
- the electrolytic polishing treatment By this electrolytic polishing treatment, all burrs adhering to the edge were removed.
- quantitative analysis was performed in the same manner as in the example.
- the chromium component was 27.70%, the iron component was 62.28%, and the nickel component was 9.02%.
- the chromium component was 27.55%, the iron component was 62.47%, and the nickel component was 8.98%.
- the chromium component was 26.55%, the iron component was 63.13%, and the nickel component was 9.32%.
- the chromium component was 25.86%, the iron component was 62.95%, and the nickel component was 10.19%.
- the chromium component was 25.22%, the iron component was 65.32%, and the nickel component was 9.46%.
- the chromium component was 25.87%, the iron component was 64.42%, and the nickel component was 9.71%. Further, in the spectrum 7, the chromium component was 25.12%, the iron component was 65.00%, and the nickel component was 9.88%. Further, in the spectrum 8, the chromium component was 25.79%, the iron component was 64.53%, and the nickel component was 9.68%. Moreover, in the spectrum 9, the chromium component was 24.99%, the iron component was 65.16%, and the nickel component was 9.85%. Further, in the spectrum 10, the chromium component was 26.26%, the iron component was 63.89%, and the nickel component was 9.85%.
- the electrolytic treatment time is sufficiently long, and uniform electropolishing is performed over the entire flat portion. For this reason, the elution amount of the iron component is also substantially uniform, and the chromium content is also substantially uniform.
- a portion where a thin edge is formed by only two flat portions positions such as spectra 4 to 5 in the comparative example
- the four flat portions are mutually connected. Comparing the chrome content of the approaching tip (positions such as spectra 1 and 2 in the comparative example), the former is 25.86% and 25.22%, the latter is 27.70% and 27.55. Contrary to the present embodiment, the portion where the thin edge is formed only by the two flat portions tends to be slightly less.
- the surface roughness of the flat surface portion 2a along the edge 1 and the other flat surface portion 2b in the trocar A of this example was measured.
- the average value of the surface roughness at the plane portion 2a was Ra 2.38
- the average value at the plane portion 2b was Ra 3.15. This difference can be said to be a significant difference in a medical blade.
- the average puncture resistance value of the trocar A according to this example was 96.6 millinewtons (mN), the maximum puncture resistance value was 107.0 mN, and the minimum puncture resistance value was 78.0 mN.
- the average puncture resistance value was 139.4 mN, the maximum puncture resistance value was 158.3 mN, and the minimum puncture resistance value was 118.3 mN.
- the piercing performance of the trocar A according to the present embodiment is sufficiently improved as compared with the piercing performance of the conventional trocar according to the comparative example.
- the present invention is advantageously used for fine knives, trocars, or bladed suture needles used in ophthalmic and brain surgery.
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Abstract
Description
に関するものである。
1 エッジ
2、2a、2b 平面部
3 峰
4 尖端
5 胴部
6 境界
7 微小平面部
10 一点鎖線(平面部2aと他の平面部2bとの境界)
Claims (3)
- 生体組織を切開するための鋭いエッジと、前記エッジを構成する平面部とを有し、
前記エッジに沿った一部の平面部の色が他の平面部の色と異なることを特徴とするエッジを有する医療用刃物。 - 前記エッジに沿った一部の平面部の色と他の平面部の色との違いが、酸化被膜の厚さの違いに基づくことを特徴とする請求項1に記載したエッジを有する医療用刃物。
- オーステナイト系ステンレス鋼によって構成され、生体組織を切開するための鋭いエッジと、前記エッジを構成する平面部とを有し、
前記エッジに沿った一部の平面部のクローム含有量が他の平面部のクローム含有量よりも多いことを特徴とするエッジを有する医療用刃物。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/876,739 US20130197549A1 (en) | 2010-09-28 | 2011-09-26 | Edged medical cutting tool |
EP11829001.4A EP2623054A4 (en) | 2010-09-28 | 2011-09-26 | Edged medical cutting tool |
JP2012536429A JP5877158B2 (ja) | 2010-09-28 | 2011-09-26 | エッジを有する医療用刃物 |
US14/940,318 US10245060B2 (en) | 2010-09-28 | 2015-11-13 | Edged medical cutting tool |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010217040 | 2010-09-28 | ||
JP2010-217040 | 2010-09-28 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/876,739 A-371-Of-International US20130197549A1 (en) | 2010-09-28 | 2011-09-26 | Edged medical cutting tool |
US14/940,318 Continuation US10245060B2 (en) | 2010-09-28 | 2015-11-13 | Edged medical cutting tool |
Publications (1)
Publication Number | Publication Date |
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WO2012043447A1 true WO2012043447A1 (ja) | 2012-04-05 |
Family
ID=45892893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2011/071832 WO2012043447A1 (ja) | 2010-09-28 | 2011-09-26 | エッジを有する医療用刃物 |
Country Status (4)
Country | Link |
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US (2) | US20130197549A1 (ja) |
EP (1) | EP2623054A4 (ja) |
JP (1) | JP5877158B2 (ja) |
WO (1) | WO2012043447A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016049173A (ja) * | 2014-08-29 | 2016-04-11 | マニー株式会社 | 医療用縫合針 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2807123C (en) * | 2010-07-30 | 2018-10-02 | Mani, Inc. | Medical cutting tool |
WO2019072819A1 (en) * | 2017-10-09 | 2019-04-18 | Safeair Ag | ELECTRODE FOR AN ELECTROSURGICAL PEN AND METHOD FOR PRODUCING AN ELECTRODE |
KR101994306B1 (ko) * | 2017-12-19 | 2019-06-28 | 황세정 | 흉터 복원을 위한 의료용 니들 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002345834A (ja) * | 2001-05-25 | 2002-12-03 | Manii Kk | 医療用刃物 |
JP2006051147A (ja) * | 2004-08-11 | 2006-02-23 | Manii Kk | 医療用刃物 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU503043B2 (en) * | 1974-10-22 | 1979-08-23 | Nippon Steel Corporation | Coloring a stainless steel |
DE3841443C1 (en) * | 1988-12-09 | 1990-01-04 | Singer Spezialnadelfabrik Gmbh, 5102 Wuerselen, De | Surgical needle |
US5263974A (en) * | 1991-01-09 | 1993-11-23 | Matsutani Seisakusho Co., Ltd. | Suture needle and method of and apparatus for grinding material for suture needle |
US5224950A (en) * | 1991-10-02 | 1993-07-06 | Prywes Arnold S | Color calibrated multi-function scalpel blade for intraocular and other surgery and associated methods of use |
US5202013A (en) * | 1991-10-15 | 1993-04-13 | Alcan International Limited | Process for coloring metal surfaces |
JP2684933B2 (ja) | 1992-07-31 | 1997-12-03 | 信越化学工業株式会社 | 架橋性ポリシラン組成物及びそのポリシラン架橋膜 |
US6330750B1 (en) * | 1996-01-11 | 2001-12-18 | Molecular Metallurgy, Inc. | Scapel blade having high sharpness and toughness |
US5958519A (en) * | 1997-09-15 | 1999-09-28 | National Science Council | Method for forming oxide film on III-V substrate |
JP4269299B2 (ja) * | 2000-02-29 | 2009-05-27 | マニー株式会社 | 医療用ナイフ |
JP4143708B2 (ja) * | 2003-06-25 | 2008-09-03 | マニー株式会社 | 医療用ナイフ |
JP4604140B2 (ja) * | 2004-09-13 | 2010-12-22 | マニー株式会社 | 医療用針又は刃物 |
JP2007097604A (ja) * | 2005-09-30 | 2007-04-19 | Manii Kk | 医療用ナイフ |
EP1979015A2 (en) * | 2006-01-31 | 2008-10-15 | Angiotech BioCoatings, Corp. | Lubricious coatings |
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2011
- 2011-09-26 WO PCT/JP2011/071832 patent/WO2012043447A1/ja active Application Filing
- 2011-09-26 JP JP2012536429A patent/JP5877158B2/ja active Active
- 2011-09-26 US US13/876,739 patent/US20130197549A1/en not_active Abandoned
- 2011-09-26 EP EP11829001.4A patent/EP2623054A4/en not_active Ceased
-
2015
- 2015-11-13 US US14/940,318 patent/US10245060B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002345834A (ja) * | 2001-05-25 | 2002-12-03 | Manii Kk | 医療用刃物 |
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JP2016049173A (ja) * | 2014-08-29 | 2016-04-11 | マニー株式会社 | 医療用縫合針 |
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EP2623054A4 (en) | 2017-03-29 |
JP5877158B2 (ja) | 2016-03-02 |
JPWO2012043447A1 (ja) | 2014-02-06 |
EP2623054A1 (en) | 2013-08-07 |
US10245060B2 (en) | 2019-04-02 |
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US20130197549A1 (en) | 2013-08-01 |
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