JP4510511B2 - A lacrimal stent and lacrimal plug with reinforced collars - Google Patents

A lacrimal stent and lacrimal plug with reinforced collars Download PDF

Info

Publication number
JP4510511B2
JP4510511B2 JP2004148310A JP2004148310A JP4510511B2 JP 4510511 B2 JP4510511 B2 JP 4510511B2 JP 2004148310 A JP2004148310 A JP 2004148310A JP 2004148310 A JP2004148310 A JP 2004148310A JP 4510511 B2 JP4510511 B2 JP 4510511B2
Authority
JP
Japan
Prior art keywords
lacrimal
brim
reinforcing member
plug
shaped reinforcing
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.)
Expired - Fee Related
Application number
JP2004148310A
Other languages
Japanese (ja)
Other versions
JP2005328922A (en
Inventor
克昭 栗橋
Original Assignee
有限会社エム・エル・シー
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 有限会社エム・エル・シー filed Critical 有限会社エム・エル・シー
Priority to JP2004148310A priority Critical patent/JP4510511B2/en
Publication of JP2005328922A publication Critical patent/JP2005328922A/en
Application granted granted Critical
Publication of JP4510511B2 publication Critical patent/JP4510511B2/en
Application status is Expired - Fee Related legal-status Critical
Anticipated expiration legal-status Critical

Links

Images

Description

  The present invention relates to a lacrimal stent and a punctal plug suitable for treatment of lacrimal passage obstruction and dry eye.

  The present inventor is easy to operate for treatment of lacrimal passage obstruction and dry eye, has little pain to the patient, and can be inserted into the lacrimal passage accurately and quickly, and is more effective and less difficult to remove than conventional ones. Research has continued for many years on pleasant lacrimal stents, and the diameter (b) of brim NST shown in FIG. 2 and brim (23) shown in FIGS. 3 and 4 is the diameter (a) of the tip (21). ) Invented smaller punctal plug with thread. The punctal plug of FIG. 4 has a protrusion (91) at the tip (21). Brim NST is already manufactured and sold by Kaneka Medix and used by doctors. For example, US Patent No. US6,383,192B1, Kuriaki Katsuaki, “Dacriology-Clinical Lacrimation-” Medical Katsu Publishing 1998, Kuriaki Kurihashi “Lacrimal Surgery and Dry Eye (Video)” Production: Intermedica Planning: Japan See also Ophthalmologist Association, Sponsor: Banyu Pharmaceutical Co., Ltd., 2003, Japanese Patent Application No. 2003-154328, Japanese Patent Application No. 2003-295664, Japanese Patent Application No. 2003-31886, Japanese Patent Application No. 2003-345589, and Japanese Patent Application No. 2003-348585.

As shown in FIG. 1, lacrimal fluid is secreted from the lacrimal gland (14), moisturizes the surface of the eyeball (17) where the cornea (15) and conjunctiva (16) are present, and then passes through the lacrimal passage to the lower nasal passage (18 ). The lacrimal passage consists of the upper punctum (1), the lower punctum (2), the upper lacrimal tubule vertical part (3), the lower lacrimal tubule vertical part (4), and the boundary between the upper lacrimal tubule vertical part and the horizontal part (5) , The border between the vertical part and the horizontal part of the lower lacrimal canal (6), the horizontal part of the upper lacrimal duct (7), the horizontal part of the lower lacrimal duct (8), the total lacrimal duct (9), the inner total punctum (10), the tears It consists of a sac (11) and a nasolacrimal duct (12). The lower end (13) of the nasolacrimal duct (12) is open to the lower nasal passage (18). The shape of the lumen of the lacrimal tubule horizontal portion (7), (8) is a spindle shape. It is known that negative pressure is generated in the tear canal lumen. For example, Katsuaki Kurihashi: Dacology-Clinical tears-. Medical Samurai Publishing, Tokyo, 1998. reference. Further, as shown in FIG. 5, the brim NST has a cup-shaped thread (93) excellent in tensile strength, heat resistance, fatigue resistance, and radiopacity, and a thick tube (42). A lacrimal stent having a reinforcing member (94) disposed at the tip is disclosed (see Japanese Patent Application No. 2004-13681, Japanese Patent Laid-Open No. 10-33584).
JP 2000-70296 A U.S. Pat. US 6,383,192B1 Japanese Patent Application No. 2003-154328 Japanese Patent Application No. 2003-198779 Special Table 2002-529144 Japanese Patent Application No. 2003-295664 Japanese Patent Application No. 2003-311886 JP 10-33584 A Japanese Patent Application No. 2004-136811 Japanese Patent Laid-Open No. 11-4713 Japanese Patent Application No. 2003-345589 Japanese Patent Application No. 2003-348585 Kuriaki Kuriaki, "Dacriology-Clinical Lacrimation-" Medical Tatsu Publishing 1998 Carter KD et al: Size variation of the lacrimal punctum in adults. Ophthalmic Plast Reconstr Surg 4: 231, 1988 Shikako Suzuki "Study on slit lamp examination for eye disease, 2nd stage, Study on punctum" Clinical Ophthalmology 10: 114 1956 Fayet B, et al: Canalicular stenoses complicating the insertion of lacrimal plugs. Incidence and mechanisms. J Fr Ophthalmol 15: 25-33, 1992 Katsuaki Kurihashi "Lacrimal Surgery and Dry Eye (Video)" Production: Intermedica Planning: Japan Ophthalmologists Association Sponsor: Banyu Pharmaceutical Co., Ltd. 2003 Kuriaki Kurihashi "Eye and Health Series No.22—Special Feature: Diseases of the Lacrimal Path and Lacrimal Gland" Supervision: Sadao Hori Planning and Production: Soshinsha Co., Ltd.

  The problem to be invented is that when the brim NST and the punctal plug 23 shown in FIGS. 2 to 5 are made small, the brim 23 enters the lacrimal passage from the punctum due to its softness. Yes, the collar (23) is not reflected by X-rays.

  As shown in FIGS. 6 to 11, the solution of the present invention is a thin disk excellent in tensile strength, heat resistance, fatigue resistance, and radiopacity in brim NST and brim plug 23. Is to include.

  By including a thin disk-shaped reinforcing member (95) or donut-shaped reinforcing member (96) made of stainless steel or the like inside brim NST and punctum plug flange (23) as shown in FIGS. The collar (23) is reinforced, and even if the collar (23) is made small, it can be prevented from going into the lacrimal passage from the punctum.

  In the embodiment of the present invention, stainless steel, brass, piano wire, etc. excellent in tensile strength, heat resistance, fatigue resistance, and X-ray impermeability in the brim NST and the bristle plug 23 (23). Includes a disk-shaped reinforcing member (95) or donut-shaped reinforcing member (96) made of metal, plastic or the like, the disk-shaped reinforcing member (95) is a thin thread placed in the brim NST meat (93).

  6 and 7, in order to reinforce the brim NST brim (23), the inner brim (23) is thin with excellent tensile strength, heat resistance, fatigue resistance and radiopacity. A disc-shaped reinforcing member (95) is placed and connected to a thin portion (40) of brim NST and a thin thread (93) disposed in the meat of the thicker tube (42). Since the collar (23) includes a radiopaque disk-shaped reinforcing member (95), even if the collar (23) enters the lacrimal passage, the collar (23) The position of can be confirmed.

  In the embodiment shown in FIG. 6, the diameter of the disk-shaped reinforcing member (95) disposed inside the brim NST brim (23) is 0.5 to 5.0 mm, preferably 1.0 to 4.0 mm. Optimally, it is 1.5 to 3.0 mm.

  In the embodiment shown in FIG. 6, the thickness of the disk-shaped reinforcing member (95) disposed inside the brim (23) of the brim NST is 0.01 to 0.20, preferably 0.02 to 0.10 mm. Optimally, it is 0.03 to 0.05 mm. FIG. 7 shows the dimensions of a typical example of the brim NST of the present invention. The disk-shaped reinforcing member (95) has a diameter of 1.6 mm and a thickness of 0.05 mm.

  The cup-shaped reinforcing member (94) made of stainless steel or the like shown in FIGS. 6 and 7 is connected to the thread-shaped reinforcing member (93). Disclosure. See JP-A-10-33584 and Japanese Patent Application No. 2004-136811.

  FIG. 7 shows the dimensions of an optimal example of the brim NST of the present invention.

  In the embodiment shown in FIGS. 8 to 11, in order to reinforce the flange (23) of the punctum plug, the inside of the flange (23) is thin with excellent tensile strength, heat resistance, fatigue resistance, and radiopacity. A donut-shaped reinforcing member (96) is placed. Therefore, even if the collar (23) is made small, it is difficult to enter the lacrimal passage from the punctum, but even if it enters the lacrimal duct, the position of the collar (23) can be confirmed by X-ray.

  In the embodiment shown in FIG. 8, the diameter of the donut-shaped reinforcing member (96) disposed inside the brim plug 23 (23) is 0.3 to 4.0 mm, preferably 0.5 to 2.5 mm. Optimally, it is 0.7 to 2.0 mm.

  In the embodiment shown in FIG. 8, the thickness of the doughnut-shaped reinforcing member (96) disposed inside the brim plug (23) of the punctum plug is 0.01-0.20, preferably 0.02-0. 10 mm, optimally 0.03 to 0.05 mm.

  In the punctum plug shown in FIGS. 9 and 10, a thread-like reinforcing member (93) and a cup-like reinforcing member (94) are arranged in the same manner as the brim NST shown in FIGS.

  In the punctum plug shown in FIG. 10, a protrusion (91) is attached to the tip (21), and a thread-shaped reinforcing member (94) connected to the cup-shaped reinforcing member (94) in the protrusion (91). 93) is arranged.

  As shown in FIG. 11, a donut-shaped reinforcing member (96) may be connected to the cup-shaped reinforcing member (94).

  By disposing the disc-shaped reinforcing member (95) or the donut-shaped reinforcing member (96) inside the brim NST and the punctum plug collar (23), the collar (23) enters the punctum from the punctum. You can prevent going.

Schematic showing the lacrimal passage Schematic showing a conventional brim NST Explanatory drawing which shows the typical example of the conventional punctum plug Sectional view showing punctal plug with threaded protrusion Sectional view of lacrimal passage stent (Brim NST) with a thread-like reinforcing member (93) disposed (A) is a sectional view showing a lacrimal stent of the present invention, (B) is an end view showing one end of the lacrimal stent of the present invention, and (C) is one end of the lacrimal stent of the present invention. End view showing (A) is sectional drawing which shows an example of the dimension of the lacrimal stent of this invention, (B) is an end elevation which shows an example of the dimension of one edge part of the lacrimal stent of this invention, (C) is the present invention. End view showing an example of the dimensions of one end of the lacrimal stent (A) is sectional drawing which shows an example of the typical punctum plug of this invention, (B) is an end elevation which shows one edge part of an example of the typical punctum plug of this invention (A) is sectional drawing which shows the punctal plug of this invention, (B) is an end elevation which shows one edge part of the punctal plug of this invention Sectional drawing which shows a typical example of this invention Sectional drawing which shows a typical example of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Upper punctum 2 Lower punctum 3 Upper lacrimal tubule vertical part 4 Lower lacrimal tubule vertical part 5 Upper lacrimal tubule vertical part and horizontal part boundary 6 Lower lacrimal tubule vertical part and horizontal part boundary 7 Upper lacrimal tubule horizontal part 8 Lacrimal canal horizontal part 9 Total lacrimal duct 10 Internal total punctum 11 Lacrimal sac 12 Nasal lacrimal duct 13 Lower end of nasolacrimal duct 14 Lacrimal gland 15 Cornea 16 Conjunctiva 17 Eyeball surface 18 Lower nasal passage 20 Lacrimal plug 21 Lacrimal plug 21 Tip portion 22 Shaft plug shaft 23 Hook 24 Hole 25 Cavity 31 Thread 40 Thin tube (or rod), thin portion 42 Thick tube 49 Small cut 81 Further narrow portion 91 Protrusion of punctum plug 93 Fibrous reinforcing member 94 Cup-shaped reinforcing member 95 Disc-shaped reinforcing member 96 Donut-shaped reinforcing member a Diameter of tip (21) b Diameter of brim (23)

Claims (2)

  1.   A lacrimal passage characterized by a thin disk-shaped reinforcing member (95) excellent in tensile strength, heat resistance, fatigue resistance, and radiopacity for reinforcing the brim NST collar (23). Stent.
  2.   A punctum plug, characterized in that a thin donut-shaped reinforcing member (96) excellent in tensile strength, heat resistance, fatigue resistance, and radiopacity is disposed inside the brim (23).
JP2004148310A 2004-05-18 2004-05-18 A lacrimal stent and lacrimal plug with reinforced collars Expired - Fee Related JP4510511B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004148310A JP4510511B2 (en) 2004-05-18 2004-05-18 A lacrimal stent and lacrimal plug with reinforced collars

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004148310A JP4510511B2 (en) 2004-05-18 2004-05-18 A lacrimal stent and lacrimal plug with reinforced collars

Publications (2)

Publication Number Publication Date
JP2005328922A JP2005328922A (en) 2005-12-02
JP4510511B2 true JP4510511B2 (en) 2010-07-28

Family

ID=35483950

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004148310A Expired - Fee Related JP4510511B2 (en) 2004-05-18 2004-05-18 A lacrimal stent and lacrimal plug with reinforced collars

Country Status (1)

Country Link
JP (1) JP4510511B2 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050232972A1 (en) 2004-04-15 2005-10-20 Steven Odrich Drug delivery via punctal plug
EP2377569A1 (en) 2004-07-02 2011-10-19 QLT Plug Delivery, Inc. Treatment medium delivery device and methods for delivery of such treatment mediums to the eye using such a delivery device
EP2010096B1 (en) 2006-03-31 2017-07-19 Mati Therapeutics Inc. Nasolacrimal drainage system implants for drug therapy
KR20100050566A (en) 2007-09-07 2010-05-13 큐엘티 플러그 딜리버리, 인코포레이티드 Lacrimal implants and related methods
RU2010136822A (en) 2008-02-18 2012-03-10 Клт Плаг Диливери, Инк. (Us) Lacrimal implants and related ways
WO2009134371A2 (en) 2008-04-30 2009-11-05 Qlt Plug Delivery, Inc. Composite lacrimal insert and related methods
BRPI0912182A2 (en) 2008-05-09 2015-10-06 Qlt Plug Delivery Inc prolonged release distribution of active agents to treat glaucoma and ocular hypertension
CA2752645C (en) 2009-02-23 2017-10-03 Qlt Inc. Lacrimal implants and related methods
CN102573716A (en) * 2009-10-22 2012-07-11 株式会社钟化 Tube device for insertion into lacrimal passage
US9974685B2 (en) 2011-08-29 2018-05-22 Mati Therapeutics Drug delivery system and methods of treating open angle glaucoma and ocular hypertension
EP3290024B1 (en) 2011-08-29 2019-04-17 Mati Therapeutics Inc. Sustained release delivery of active agents to treat glaucoma and ocular hypertension
US20140364790A1 (en) * 2012-01-26 2014-12-11 Kaneka Corporation Lacrimal duct tube
CN104287877B (en) * 2014-11-06 2016-08-17 江西瑞济生物工程技术股份有限公司 The Novel lacrimal recovery support that a kind of degradable biological amniotic membrane is compound

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05505957A (en) * 1990-03-29 1993-09-02
JPH09276318A (en) * 1996-04-08 1997-10-28 M L C:Kk Insertion tool for pipe in lacrimal duct
JPH1033584A (en) * 1996-07-26 1998-02-10 M L C:Kk Lacrimal duct insertion appliance
JPH10309292A (en) * 1997-05-13 1998-11-24 Masao Miyake Artificial lacrimal duct forming tube

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05505957A (en) * 1990-03-29 1993-09-02
JPH09276318A (en) * 1996-04-08 1997-10-28 M L C:Kk Insertion tool for pipe in lacrimal duct
JPH1033584A (en) * 1996-07-26 1998-02-10 M L C:Kk Lacrimal duct insertion appliance
JPH10309292A (en) * 1997-05-13 1998-11-24 Masao Miyake Artificial lacrimal duct forming tube

Also Published As

Publication number Publication date
JP2005328922A (en) 2005-12-02

Similar Documents

Publication Publication Date Title
ES2402013T3 (en) Implant to treat eye disorders
EP1418868B1 (en) Glaucoma stent for glaucoma treatment
AU2009322146B2 (en) Methods and apparatus for delivering ocular implants into the eye
CN1230127C (en) Scleral clip and procedures for using same
AU2009246553B2 (en) Small gauge mechanical tissue cutter/aspirator probe for glaucoma surgery
JP5328788B2 (en) Intraocular implant with hydrogel expansion capability
CN101868202B (en) Ocular implant delivery system
US9271869B2 (en) Intrascleral shunt placement
US7867186B2 (en) Devices and methods for treatment of ocular disorders
ES2320121T3 (en) Uveoescleral drainage device.
US20050271704A1 (en) Injectable glaucoma implants with multiple openings
US20050266047A1 (en) Injectable glaucoma implants with multiple openings
JP2013509245A (en) Ocular treatment device and method
KR101601798B1 (en) A method of treating an ocular pathology by applying high intensity focused ultrasound and device thereof
ES2642584T3 (en) Device to drain fluids and reduce intraocular pressure
Conrad-Hengerer et al. Effect of femtosecond laser fragmentation of the nucleus with different softening grid sizes on effective phaco time in cataract surgery
US8007459B2 (en) Ocular implant with anchoring mechanism and multiple outlets
US20030060752A1 (en) Glaucoma device and methods thereof
US8545430B2 (en) Expandable ocular devices
US6981958B1 (en) Implant with pressure sensor for glaucoma treatment
US6666841B2 (en) Bifurcatable trabecular shunt for glaucoma treatment
JP5880985B2 (en) Lacrimal implant and related methods
ES2551782T3 (en) Device for the treatment of glaucoma
AU2012374034B2 (en) Ocular delivery systems and methods
US7282046B2 (en) Glaucoma treatment method

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20070418

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20070426

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20070427

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20100427

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20100430

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130514

Year of fee payment: 3

LAPS Cancellation because of no payment of annual fees