WO2019146632A1 - Couteau nasal - Google Patents

Couteau nasal Download PDF

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Publication number
WO2019146632A1
WO2019146632A1 PCT/JP2019/002056 JP2019002056W WO2019146632A1 WO 2019146632 A1 WO2019146632 A1 WO 2019146632A1 JP 2019002056 W JP2019002056 W JP 2019002056W WO 2019146632 A1 WO2019146632 A1 WO 2019146632A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
cutting
knife
nasal
cutting edge
Prior art date
Application number
PCT/JP2019/002056
Other languages
English (en)
Japanese (ja)
Inventor
正寿 斎藤
昌人 須田
貴友 斎藤
Original Assignee
マニー株式会社
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 マニー株式会社 filed Critical マニー株式会社
Priority to JP2019567109A priority Critical patent/JPWO2019146632A1/ja
Priority to CN201980009838.8A priority patent/CN111629677A/zh
Publication of WO2019146632A1 publication Critical patent/WO2019146632A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/24—Surgical instruments, devices or methods, e.g. tourniquets for use in the oral cavity, larynx, bronchial passages or nose; Tongue scrapers
    • 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

Definitions

  • the present invention relates to a nasal knife used for nasal surgery.
  • FIG. 3 shows a conventional nasal knife, wherein (a) is a side view, (b) is a front view of a blade portion, and (c) is an enlarged view of a cutting edge section.
  • the nose knife 20 shown in FIGS. 3 (a), 3 (b) and 3 (c) has a shank portion 21 having a circular cross section and a linear shape, and the base end side of the shank portion 21 is nonslip.
  • a handle portion 23 is provided, and a blade portion 22 is provided on the tip end side.
  • the shape of the blade part 22 is a substantially flat plate shape of a substantially triangular shape as shown in FIG.3 (b).
  • the cutting edges 22a and 22a are formed on two sides of the substantially triangular shape, and the apex where the cutting edges 22a and 22a intersect is sharp.
  • such a nasal knife 20 is inserted from the nostril, and an incision, collection and exfoliation of a living tissue, and the like are performed. At this time, the tip of the blade portion 22 is pierced into the mucous membrane, and the mucous membrane is cut while confirming the feel of the cartilage.
  • the tip of the blade portion 22 since the tip of the blade portion 22 is pointed, there is a drawback that the feel when penetrating the mucous membrane and hitting the cartilage is difficult to understand.
  • FIG. 4 is a plan view of a general crescent knife.
  • the crescent knife 30 is a knife in which the blade portion 32 has a substantially flat plate shape, and a substantially U-shaped cutting blade 32a is formed by connecting two parallel straight lines and its tip with a curve at the outer edge of the blade portion 32. is there.
  • Such a crescent knife 30 has an advantage that the touch on the cartilage can be easily understood since the tip is not pointed.
  • the crescent knife 30 for ophthalmology generally has a cutting edge cross-sectional angle of 20 ° or more, and the shape of the cutting edge 32a is substantially U-shaped, it pierces or incises a mucous membrane When the resistance becomes relatively large. Furthermore, there is also a problem that the visibility in the nostrils is not so good due to the shape of the blade 32.
  • the present invention has a low resistance at the time of piercing and incision in surgery of the nasal cavity and is excellent in visibility, and when the tip of the blade is pierced in the mucous membrane
  • the object is to provide a nasal knife that makes it easy to understand the feel when hitting a cartilage.
  • the nose knife of the present invention comprises a first linear cutting blade and a second cutting blade connecting the end portions of the first cutting edge on the tip side. And the width between the first cutting edges is narrowed toward the second cutting edge, and the angle between the first cutting edges is 15 It is characterized in that the angle of the cutting edge section of any of the first cutting edge and the second cutting edge is not less than 11 ° and not more than 17 ° while being not less than 60 ° and not more than 60 °.
  • the second cutting edge has an arc shape with a radius of 0.4 mm or more and 1.8 mm or less.
  • the length of an imaginary line connecting the proximal end sides of the first cutting edge is the blade width, and the blade width is 1.0 mm or more and 3.6 mm or less, or
  • the distance to the tip of the cutting edge of No. 2 may be a blade length, and the blade length may be 2.5 mm or more and 4.0 mm or less.
  • the nasal knife of the present invention when the tip is pierced in the mucous membrane, the effect of touching the cartilage can be easily understood. Moreover, the resistance at the time of penetration and incision is also small, and the effect that visibility is good is also produced.
  • a nose knife of this invention Comprising: (a) is a top view, (b) is an enlarged view of a blade-edge cross section. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which illustrates the usage method of a nose knife, (a) shows a mode that it pierces and (b) shows a mode that it incises. It is a conventional nose knife, and (a) is a side view, (b) is a front view of a blade part, (c) is an enlarged view of a blade edge section. It is a top view of a common crescent knife.
  • FIG. 1 is a nose knife of the present invention, where (a) is a plan view and (b) is an enlarged view of a cutting edge cross section.
  • the nose knife 10 of the present invention is provided with a substantially flat blade portion 12 at the tip of the shank portion 11.
  • two linear first cutting edges 12a, 12a and a second cutting edge 12b connecting the end portions of the first cutting edges 12a, 12a on the tip end side are provided. It is formed.
  • the position where the cutting edge 12a is connected to the shank portion 11 is the base end side of the cutting edge, and the position farthest from the shank portion 11 is the tip end side of the cutting edge.
  • the shank portion 11 has a straight shape straightly connected coaxially to the handle portion from a handle portion (not shown), a straight portion, and a curved portion integrally connected to the tip thereof. There is a shape that consists of The entire length of the shank portion 11 is 70 mm or more. The longer one has the advantage that the blade portion 12 can reach the back of the nasal cavity, but if it is too long, the operability deteriorates. In addition, this length is sufficiently longer than in the past, and it can be used for incision and exfoliation of a site which has not been reached conventionally.
  • the cross-sectional shape of the shank portion 11 is preferably a circle in the range of 1.5 mm to 2.5 mm based on a diameter of 2.0 mm. With such a size, since the cross section is small, interference when both a nasal knife and an endoscope are inserted into the nostril can be reduced. However, if the diameter is too thin, there is a problem in strength, so the minimum diameter is preferably 1.5 mm.
  • the width between the first cutting edges 12a, 12a narrows towards the second cutting edge 12b.
  • the second cutting edge 12b is basically based on a curved shape such as an arc shape, but if the width between the tip sides of the first cutting edges 12a and 12a is narrow, it is regarded as substantially straight. There is also. That is, the appearance of the blade portion 12 is in the shape of a substantially isosceles triangle whose apex is not sharp.
  • Such a substantially isosceles triangular blade 12 shape has the advantage that it is easier to secure visibility than a crescent knife even in surgery at narrow places such as the nasal cavity.
  • the approximate size of the blade portion 12 is fixed. Specifically, assuming a virtual line 12c connecting the proximal end sides of the first cutting edges 12a and 12a to each other, and the length of the virtual line 12c is a blade width W, the blade width W is 1.2. It is desirable to set it as 0 mm or more and 3.6 mm or less. Furthermore, assuming that the distance from the imaginary line 12c to the tip of the second cutting edge 12b is a blade length L, it is preferable that the blade length L be 2.5 mm or more and 4.0 mm or less.
  • the shape of the blade portion is a substantially triangular shape with a sharp tip, the cutting blade can not be made very thin in order to ensure strength.
  • the second cutting edge 12b is not pointed, it is possible to make the cutting edge thinner than conventional.
  • the angle ⁇ of any of the cutting edges of the first cutting edge 12a and the second cutting edge 12b can be 11 ° or more and 17 ° or less. This is thinner than conventional nasal knives or crescent knives for ophthalmology, and therefore has an effect of reducing resistance at the time of piercing the mucous membrane or at the time of incision.
  • FIG. 2 is a view illustrating how to use the nasal knife, in which (a) shows piercing and (b) shows incising.
  • the nose knife 10 is moved in the direction of the respective arrows to perform piercing and incision.
  • the second cutting blade 12b which is the tip of the blade 12 is pierced through the mucous membrane 50.
  • the second cutting edge 12b may have a curved shape that is convex toward the tip direction of the blade portion 12, but desirably, it has an arc shape, and the radius R thereof is 0.4 mm or more and 1.8 mm or less It is good to If the tip of the nose knife 10 has a cutting edge with such a radius of curvature, although it is not as sharp as a conventional nose knife, it is sufficiently pointed as compared to a crescent knife, so the piercing resistance is kept small. And the piercing operation can be done smoothly.
  • the width between the first cutting edges 12a, 12a is formed to be narrower toward the second cutting edge 12b.
  • the angle ⁇ between the first cutting edges 12a and 12a be 15 ° or more and 60 ° or less.
  • the first cutting edges 12a and 12a are not perpendicular to the mucous membrane 50. Since it has a certain angle, resistance at the time of incision can be suppressed. And at this time, if the second cutting edge 12b which is the tip of the blade 12 has an arc shape and the radius R is 0.4 mm or more and 1.8 mm or less as described above, the cartilage 60 has the tip of the blade 12
  • the mucous membrane 50 can be incised smoothly while feeling the feeling that it is hard to bite and hit the cartilage 60.

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • General Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Dentistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Otolaryngology (AREA)
  • Surgical Instruments (AREA)

Abstract

L'invention concerne un couteau nasal grâce auquel une excellente visibilité est obtenue et qui présente une résistance minimale pendant le perçage ou la découpe dans la chirurgie de la cavité nasale ; de plus, la sensation de contact avec le cartilage est facilement perçue lorsqu'une membrane muqueuse est percée par l'extrémité distale d'une partie lame du couteau nasal. Ce couteau nasal (10) comprend : une partie lame en forme de plaque plate (12) pourvue de premières lames de coupe (12a, 12a) comprenant deux formes de ligne droite, et une seconde lame de coupe (12b) pour relier les extrémités distales des premières lames de coupe (12a, 12a) ; la largeur entre les premières lames de coupe diminue progressivement vers la seconde lame de coupe, l'angle entre les premières lames de coupe (12a, 12a) étant de 15° à 60°, et l'angle d'une section transversale de bord de lame de l'une quelconque des premières lames de coupe (12a, 12a) et de la seconde lame de coupe (12b) étant de 11° à 17°.
PCT/JP2019/002056 2018-01-24 2019-01-23 Couteau nasal WO2019146632A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2019567109A JPWO2019146632A1 (ja) 2018-01-24 2019-01-23 鼻用ナイフ
CN201980009838.8A CN111629677A (zh) 2018-01-24 2019-01-23 鼻用手术刀

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018-009697 2018-01-24
JP2018009697 2018-01-24

Publications (1)

Publication Number Publication Date
WO2019146632A1 true WO2019146632A1 (fr) 2019-08-01

Family

ID=67394665

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/002056 WO2019146632A1 (fr) 2018-01-24 2019-01-23 Couteau nasal

Country Status (3)

Country Link
JP (1) JPWO2019146632A1 (fr)
CN (1) CN111629677A (fr)
WO (1) WO2019146632A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200138514A1 (en) * 2018-11-02 2020-05-07 Intuitive Surgical Operations, Inc. Tissue penetrating device tips
EP4197460A4 (fr) * 2020-10-13 2024-01-17 Kai R&D Center Co., Ltd. Bistouri pour incision de sac lacrymal

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114271903A (zh) * 2021-12-29 2022-04-05 阚轩 用于治疗下鼻甲肥大的手术刀

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5258002A (en) * 1992-05-04 1993-11-02 Alcon Surgical, Inc. Dual tapered surgical knife
JP2009061015A (ja) * 2007-09-05 2009-03-26 Kai R & D Center Co Ltd 手術用刃物

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203234801U (zh) * 2013-04-15 2013-10-16 张�林 一种乳腺癌游离皮瓣手术刀
CN204394632U (zh) * 2015-01-13 2015-06-17 无锡市第三人民医院 一种双刃手术刀

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5258002A (en) * 1992-05-04 1993-11-02 Alcon Surgical, Inc. Dual tapered surgical knife
JP2009061015A (ja) * 2007-09-05 2009-03-26 Kai R & D Center Co Ltd 手術用刃物

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200138514A1 (en) * 2018-11-02 2020-05-07 Intuitive Surgical Operations, Inc. Tissue penetrating device tips
EP4197460A4 (fr) * 2020-10-13 2024-01-17 Kai R&D Center Co., Ltd. Bistouri pour incision de sac lacrymal

Also Published As

Publication number Publication date
JPWO2019146632A1 (ja) 2021-01-07
CN111629677A (zh) 2020-09-04

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