WO2024083139A1 - Appareil d'excision de trabéculum cornéoscléral - Google Patents

Appareil d'excision de trabéculum cornéoscléral Download PDF

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Publication number
WO2024083139A1
WO2024083139A1 PCT/CN2023/125129 CN2023125129W WO2024083139A1 WO 2024083139 A1 WO2024083139 A1 WO 2024083139A1 CN 2023125129 W CN2023125129 W CN 2023125129W WO 2024083139 A1 WO2024083139 A1 WO 2024083139A1
Authority
WO
WIPO (PCT)
Prior art keywords
shell
trabecular meshwork
fixing seat
outer tube
resection
Prior art date
Application number
PCT/CN2023/125129
Other languages
English (en)
Chinese (zh)
Inventor
孙杰
陈彦良
吴宏流
陈齐欧
张劼
常兆华
郝晓军
Original Assignee
微创视神医疗科技(上海)有限公司
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 微创视神医疗科技(上海)有限公司 filed Critical 微创视神医疗科技(上海)有限公司
Publication of WO2024083139A1 publication Critical patent/WO2024083139A1/fr

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Classifications

    • 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
    • A61F9/00736—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments
    • 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
    • A61F9/00781—Apparatus for modifying intraocular pressure, e.g. for glaucoma treatment

Definitions

  • the present application relates to the technical field of medical devices, and in particular to a trabecular meshwork resection device.
  • Glaucoma is an intraocular disease in which increased intraocular pressure compresses the optic nerve, causing damage to the optic nerve, and thus causing varying degrees of visual field loss. Glaucoma ranks second among blinding eye diseases in the world and is the world's leading irreversible cause of blindness. In my country, it is difficult for glaucoma patients to receive early diagnosis and timely and correct treatment, resulting in a gradual increase in the incidence of glaucoma. And with the aging of the Chinese population, the prevalence of glaucoma is also increasing year by year. The treatment of glaucoma generally chooses to control the patient's intraocular pressure.
  • MIGS minimally invasive glaucoma surgery
  • a trabecular meshwork resection device which can directly form a tiny incision on the trabecular meshwork, reduce the resistance to aqueous humor outflow, thereby reducing intraocular pressure for treatment and avoiding the occurrence of complications and adverse reactions caused by the implantation of drainage implants.
  • a trabecular meshwork resection device comprises a shell and a cutting assembly, wherein the cutting assembly comprises an outer tube and an inner rod; the outer tube is movably arranged on the shell, one end of the outer tube is a resection opening, and the resection opening is located outside the shell; the inner rod is fixedly connected to the shell, the inner rod penetrates into the outer tube, the inner rod has an insertion end, the insertion end passes through the resection opening and is located outside the outer tube, the insertion end is used to penetrate the trabecular meshwork tissue, and the side wall of the insertion end is provided with a resection groove for accommodating the trabecular meshwork tissue; wherein when the outer tube moves toward the insertion end, the insertion end cooperates with the resection opening to resect the trabecular meshwork tissue in the resection groove.
  • the trabecular meshwork resection device also includes a button and a first fixed seat; the outer wall of the shell is provided with an opening, and the button is arranged at the opening; the first fixed seat is movably arranged in the shell, and the first fixed seat is connected to the outer tube, and the first fixed seat can be moved along the axial direction of the inner rod by pressing the button.
  • the trabecular meshwork resection device further comprises an elastic member; the first fixing seat comprises an abutment portion; the elastic member is disposed in the shell and applies a force to the abutment portion in a direction away from the resection opening.
  • the first fixing seat has a first mounting hole and a first limiting block, the first mounting hole is used to mount the outer tube; the inner wall of the shell is provided with a first The first limiting groove cooperates with the first limiting block to limit the moving direction of the first fixing seat.
  • the elastic member is a spring; an extension portion is provided on the abutting portion, and the extension portion extends in a direction close to the cut-out; the first mounting hole is arranged along the axial direction of the extension portion and is connected to the abutting portion; the spring is sleeved on the extension portion, and one end of the spring abuts against the abutting portion.
  • second limit blocks are provided on both sides of the button, and the second limit blocks are located at the bottom of the button, and the second limit blocks abut against the inner wall of the shell through the opening.
  • the trabecular meshwork resection device also includes an abutment member, which has a rotating end and an abutment end; a rotating groove is opened at the bottom of the button, and the rotating end is rotatably arranged in the rotating groove; the abutment end is in contact with the abutment portion; when the button is pressed, the abutment member rotates along the rotating end, so that the abutment end pushes the first fixed seat to move.
  • the abutting portion has an inclined wall, and one end of the button bottom abuts against the inclined wall.
  • the trabecular meshwork resection device further comprises a second fixing seat, the second fixing seat is provided with a second mounting hole along its axial direction, and the second fixing seat is arranged in the shell; one end of the inner rod passes through the outer tube and is arranged in the second mounting hole.
  • a baffle is provided at one end of the second fixing seat, and the baffle is fixed in the shell.
  • the shell includes a first shell and a second shell; the first shell and the second shell are detachably connected, and the first shell and the second shell cooperate to form a accommodating cavity, and the accommodating cavity is used to install the first fixing seat and the second fixing seat.
  • one end of the first shell is provided with a through hole for the outer tube to pass through, and the other end of the first shell has a buckling portion; one end of the second shell is provided with a buckling opening, and the buckling opening is engaged with the buckling portion.
  • a fixing hole is formed on an end surface of one end of the second housing, the buckle opening is close to the fixing hole, the second fixing seat is disposed in the fixing hole, and a side surface of the baffle abuts against the fixing hole.
  • the insertion end penetrates the trabecular meshwork tissue so that the trabecular meshwork tissue is located in the resection groove.
  • the resection port can be coordinated with the resection groove to resect the trabecular meshwork tissue in the resection groove, and the aqueous humor can flow out through the incision, thereby reducing intraocular pressure for treatment and avoiding complications and adverse reactions caused by the implantation of the drainage implant.
  • FIG1 is a perspective view of a trabecular meshwork removal device provided by one embodiment
  • FIG2 is a cross-sectional view of a cutting assembly provided by an embodiment
  • FIG3 is a schematic diagram of using a trabecular meshwork resection device according to an embodiment to remove trabecular meshwork tissue
  • FIG4 is an exploded view of the trabecular meshwork resection device shown in FIG1 ;
  • FIG5 is a perspective view of the button in FIG4 ;
  • FIG6 is a perspective view of the first fixing seat in FIG4 ;
  • FIG7 is a perspective view of the second fixing seat in FIG4;
  • FIG8 is a three-dimensional view of the abutment member in FIG4 ;
  • FIG9 is a perspective view of the first fixing seat in FIG4 cooperating with the button through the abutment member;
  • FIG10 is a perspective view of a button provided in another embodiment
  • FIG11 is a perspective view of a first fixing seat provided in another embodiment
  • FIG12 is a perspective view of the cooperation between the first fixing seat and the button provided in another embodiment
  • FIG13 is a cross-sectional view of the trabecular meshwork removal device shown in FIG1 along its axial direction;
  • the trabecular meshwork removal device includes a housing 1 and a cutting assembly 2 .
  • the cutting assembly 2 includes an inner rod 21 and an outer tube 22 sleeved on the inner rod 21.
  • the outer tube 22 is movably arranged on the housing 1, and specifically, the outer tube 22 can move along the axial direction of the inner rod 21.
  • a cutting opening 221 is opened at one end of the outer tube 22, and the cutting opening 221 is located outside the housing 1, and part of the outer tube 22 is located inside the housing 1.
  • the inner rod 21 is fixedly connected to the shell 1.
  • the inner rod 21 is inserted into the outer tube 22 and is coaxially arranged with the outer tube 22.
  • One end of the inner rod 21 is an insertion end 211, and the insertion end 211 can pass through the resection opening 221 and be located outside the outer tube 22.
  • the insertion end 211 is used to penetrate the trabecular meshwork tissue, and the side wall of the insertion end 211 is provided with a resection groove 212 for accommodating the trabecular meshwork tissue.
  • the insertion end 211 cooperates with the resection opening 221 to resect the trabecular meshwork tissue in the resection groove 212.
  • the excision port 221 has a blade structure, which can ensure that the outer tube 22 can smoothly pass through the cornea and the anterior chamber and excise the trabecular meshwork tissue.
  • the insertion end 211 has a certain taper and has puncture and guide functions, which can ensure that the trabecular meshwork tissue is easily penetrated, and the penetrated trabecular meshwork tissue is located in the resection groove 212.
  • the insertion end 211 is pushed into the eye through the corneal incision 103 , passes through the anterior chamber 105 , and then penetrates the trabecular meshwork tissue 102 , and the penetrated trabecular meshwork tissue 102 is located in the resection groove 212 , and then the outer tube 22 is pushed forward to remove the trabecular meshwork tissue located in the resection groove 212 through the resection opening 221 .
  • aqueous humor circulation channels can be selectively created to allow the aqueous humor to smoothly enter Schlemm's canal through the trabecular meshwork of the anterior chamber, thereby achieving an appropriate intraocular pressure-lowering effect.
  • the operation is highly flexible and the occurrence of complications and adverse reactions caused by the implantation of drainage implants can be avoided.
  • the trabecular meshwork resection device further includes a button 3 and a first fixing seat 5 .
  • the outer wall of the housing 1 is provided with an opening, and the button 3 is movably provided in the opening.
  • the housing 1 has a receiving cavity, and the first fixing seat 5 is movably provided in the receiving cavity in the housing 1.
  • the first fixing seat 5 is fixedly connected to the outer tube 22, and the first fixing seat 5 can be moved along the axial direction of the inner rod 21 by pressing the button 3, thereby driving the outer tube 22 to move.
  • the trabecular meshwork removal device further includes a second fixing seat 6.
  • the second fixing seat 6 is provided with a second mounting hole 602 along its axial direction.
  • the second fixing seat 6 is fixedly arranged in the housing 1 and spaced apart from the first fixing seat 5.
  • One end of the inner rod 21 passes through the outer tube 22 and is arranged in the second mounting hole 602, so that the second fixing seat 6 is connected to the inner rod 21.
  • the other end of the inner rod 21 is the insertion end 211.
  • the second mounting hole 602 is arranged corresponding to the first mounting hole 501 of the first fixing seat 5 , so that the outer tube 22 and the inner rod 21 are coaxially arranged.
  • a baffle 601 is provided at one end of the second fixing seat 6, and the baffle 601 is fixed in the housing 1.
  • the baffle 601 can be snap-fitted in the housing 1, so as to fix the second fixing seat 6.
  • a plurality of second limit blocks 302 are symmetrically provided on both sides of the button 3.
  • the second limit blocks 302 are located at the bottom of the button 3.
  • the second limit blocks 302 can abut against the inner wall of the housing 1 near the opening, thereby preventing the button 3 from falling off from the opening.
  • the tail of the button 3 has a support portion 303.
  • the support portion 303 is in a step shape, and the support portion 303 contacts a side wall of the opening to support the tail of the button 3.
  • the front of the button 3 is a front step 304, and when the button is pressed to the limit position, the front step 304 abuts against the edge of the opening to play a limiting role.
  • the trabecular meshwork removal device further includes an abutment member 4 , wherein the abutment member 4 has a rotation end 401 and an abutment end 402 .
  • a rotation groove 301 is formed at the bottom of the button 3 .
  • the rotation end 401 is rotatably disposed in the rotation groove 301 , and the abutting end 402 contacts the abutting portion 502 of the first fixing seat 5 .
  • the rotating end 401 is a columnar structure to achieve rotation in the rotating groove 301.
  • the abutting end 402 is an arc-shaped surface, and the abutting portion 502 is provided with an arc-shaped groove 504 corresponding to the abutting end 402.
  • the first fixing seat 5 has a first mounting hole 501 and a first limiting block 505.
  • the first mounting hole 501 is used to install the outer tube 22, and the first limiting block 505 can be located on both sides and the lower surface of the first fixing seat 5.
  • a first limiting groove is provided in the accommodating cavity of the shell 1 along the axial direction of the outer tube 22, and the first limiting groove cooperates with the first limiting block 505 to limit the moving direction of the first fixing seat 5.
  • the abutting portion 502 is provided with an extension portion 503, and the extension portion 503 extends toward the direction close to the cut-off opening 221.
  • the first mounting hole 501 is arranged along the axial direction of the extension portion 503.
  • the first mounting hole 501 and the outer tube 22 can be connected by dispensing, injection molding, welding or hot melting.
  • the abutment member 4 may not be used.
  • an inclined wall 506 may be provided on the abutment portion 502, and the front end protrusion 305 at the bottom of the button 3 abuts against the inclined wall 506.
  • the front end of the bottom of the button 3 applies a force to the inclined wall 506 to move the first fixing seat 5.
  • the trabecular meshwork resection device further comprises an elastic member 7.
  • the elastic member 7 is disposed in the accommodating cavity in the housing 1 and applies a force to the abutment portion 502 in a direction away from the resection opening 221.
  • the outer tube 22 can automatically return to the initial position after moving forward for cutting.
  • the elastic member 7 is a spring.
  • the spring is sleeved on the extension portion 503 , and one end of the spring abuts against the abutting portion 502 , while the other end of the spring abuts against the inner wall of the housing 1 .
  • the elastic member 7 and the abutting end 402 are respectively located on both sides of the abutting portion 502, and respectively apply opposite forces to the abutting portion 502. Therefore, when the button 3 is no longer pressed, the spring applies force to the abutting portion 502, so that the first fixing seat 5 moves and the outer tube 22 is reset.
  • the housing 1 includes a first housing 11 and a second housing 12.
  • the first housing 11 and the second housing 12 are detachably connected.
  • the first housing 11 and the second housing 12 cooperate to form a receiving cavity, and the receiving cavity is used to install the first fixing seat 5 and the second fixing seat 6.
  • the first fixing seat 5 is located in the first housing 11, and the second fixing seat 6 is located in the second housing 12.
  • first shell 11 is provided with a through hole to allow the outer tube 22 to pass through, and the other end of the first shell 11 has a buckle portion 111.
  • One end of the second shell 12 is provided with a buckle opening 121. The buckle portion 111 is snapped into the buckle opening 121, thereby realizing a detachable connection between the first shell 11 and the second shell 12.
  • first shell 11 and the second shell 12 may be detachably connected by providing internal and external thread structures that match each other on the first shell 11 and the second shell 12 .
  • connection method between the first housing 11 and the second housing 12 includes but is not limited to a snap-fit connection or a threaded connection.
  • the end surface of the second housing 12 near the buckle opening 121 is provided with a fixing hole, and the second fixing seat 6 is provided in the fixing hole.
  • the second fixing seat 6 and the fixing hole are interference fit, that is, the second fixing seat 6 is inserted into the second housing 12.
  • the side surface abuts against the opening of the fixing hole, and the other side surface of the baffle 601 can abut against the protrusion in the first shell 11 to achieve the fixation of the baffle 601.
  • the trabecular meshwork resection device in the above embodiment has a simple structure. By cutting an opening in the trabecular meshwork tissue, aqueous humor can flow out, thereby reducing intraocular pressure for treatment, avoiding complications and adverse reactions caused by the implantation of drainage implants, and causing little trauma to the patient, which can reduce surgical risks.

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  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

Un appareil d'excision de trabéculum cornéoscléral, comprenant une coque et un ensemble de coupe. L'ensemble de coupe comprend un tube externe et une tige interne ; le tube externe est disposé de façon mobile sur la coque, une extrémité du tube externe est un orifice d'excision, et l'orifice d'excision est situé à l'extérieur de la coque. La tige interne est reliée à la coque ; la tige interne pénètre dans le tube externe ; la tige interne est pourvue d'une extrémité d'insertion ; l'extrémité d'insertion est située à l'extérieur du tube externe et à proximité de l'orifice d'excision ; un évidement d'excision est formé dans la paroi latérale de l'extrémité d'insertion ; l'extrémité d'insertion est mise en correspondance avec l'orifice d'excision ; l'extrémité d'insertion est utilisée pour pénétrer à travers le tissu de trabéculum cornéoscléral ; et lorsque le tube externe se déplace vers l'extrémité d'insertion, l'extrémité d'insertion et l'orifice d'excision coopèrent et peuvent être utilisés pour exciser le tissu de trabéculum cornéoscléral dans l'évidement d'excision.
PCT/CN2023/125129 2022-10-20 2023-10-18 Appareil d'excision de trabéculum cornéoscléral WO2024083139A1 (fr)

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CN202211287245.8A CN115590677A (zh) 2022-10-20 2022-10-20 小梁网切除设备
CN202211287245.8 2022-10-20

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Publication number Priority date Publication date Assignee Title
CN115590677A (zh) * 2022-10-20 2023-01-13 微创视神医疗科技（上海）有限公司（Cn） 小梁网切除设备

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0537116A1 (fr) * 1991-10-11 1993-04-14 Mauro Caponi Instrument chirurgical à double conduit
CN2249069Y (zh) * 1996-02-02 1997-03-12 程进学 巩膜遂道内小梁咬切器
US20090287233A1 (en) * 2008-05-15 2009-11-19 Huculak John C Small Gauge Mechanical Tissue Cutter/Aspirator Probe For Glaucoma Surgery
CN103781445A (zh) * 2011-09-06 2014-05-07 株式会社中京医疗 手术用器具
CN110495931A (zh) * 2019-09-09 2019-11-26 武汉微新坦医疗科技有限公司 一种电动式心腔内心肌切割器
CN113143410A (zh) * 2021-04-16 2021-07-23 上海璟康商贸合伙企业(有限合伙) 一种心脏组织造口装置
CN115590677A (zh) * 2022-10-20 2023-01-13 微创视神医疗科技（上海）有限公司（Cn） 小梁网切除设备

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100577112C (zh) * 2005-01-14 2010-01-06 奥林巴斯医疗株式会社 外科用处置器械
JP4589127B2 (ja) * 2005-01-14 2010-12-01 オリンパスメディカルシステムズ株式会社 外科用処置具
RU2596718C2 (ru) * 2011-02-15 2016-09-10 Смит Энд Нефью, Инк. Устройство для артроскопической резекции
CN206896406U (zh) * 2017-01-11 2018-01-19 温州市人民医院 一种电刀
JP6253840B1 (ja) * 2017-09-07 2017-12-27 株式会社リメディオ 粉粒状物供給装置及び粉粒状物供給装置セット
CN209347167U (zh) * 2018-11-13 2019-09-06 上海节惠生物科技有限公司 一种一次性使用包皮环切缝合器
CN211355843U (zh) * 2019-12-24 2020-08-28 北京纳通医学科技研究院有限公司 一种拆卸工具
CN111658023A (zh) * 2020-07-08 2020-09-15 郑州大学第一附属医院 周向伸缩钳瓣式多功能腔道活检钳装置
CN216535445U (zh) * 2021-11-09 2022-05-17 陕西福音假肢有限责任公司 一种用于幼儿马蹄足跟腱切断手术刀

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0537116A1 (fr) * 1991-10-11 1993-04-14 Mauro Caponi Instrument chirurgical à double conduit
CN2249069Y (zh) * 1996-02-02 1997-03-12 程进学 巩膜遂道内小梁咬切器
US20090287233A1 (en) * 2008-05-15 2009-11-19 Huculak John C Small Gauge Mechanical Tissue Cutter/Aspirator Probe For Glaucoma Surgery
CN103781445A (zh) * 2011-09-06 2014-05-07 株式会社中京医疗 手术用器具
CN110495931A (zh) * 2019-09-09 2019-11-26 武汉微新坦医疗科技有限公司 一种电动式心腔内心肌切割器
CN113143410A (zh) * 2021-04-16 2021-07-23 上海璟康商贸合伙企业(有限合伙) 一种心脏组织造口装置
CN115590677A (zh) * 2022-10-20 2023-01-13 微创视神医疗科技（上海）有限公司（Cn） 小梁网切除设备

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