US20030074008A1 - Cataract instrument - Google Patents
Cataract instrument Download PDFInfo
- Publication number
- US20030074008A1 US20030074008A1 US09/977,471 US97747101A US2003074008A1 US 20030074008 A1 US20030074008 A1 US 20030074008A1 US 97747101 A US97747101 A US 97747101A US 2003074008 A1 US2003074008 A1 US 2003074008A1
- Authority
- US
- United States
- Prior art keywords
- tubular body
- shaft
- loop
- cataract
- resilient member
- 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.)
- Granted
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Classifications
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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
- A61F9/00736—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments
Definitions
- the present is related to a medical instrument, and more particularly to an instrument for removing a cataract in an eye.
- Cataracts are opaque tissue which has grown in a lens of an eye causing a loss of sight.
- a doctor removes the opaque tissue by a bistoury and plants an artificial lens in the patient's eye.
- healthy tissue around the diseased tissue often is removed by the bistoury because the lens has a round profile.
- it is also not easy to completely remove the irregularly-shaped diseased tissue using the conventional bistoury.
- the invention provides a cataract instrument to mitigate and/or obviate the aforementioned problems.
- the main objective of the invention is to provide a cataract instrument with which a doctor can effectively remove opaque tissue in a patient's eye.
- FIG. 1 is an exploded perspective view of a cataract instrument in accordance with the invention
- FIG. 2 is a cross sectional view of the cataract instrument in FIG. 1, and in a retracted mode
- FIG. 3 is a cross sectional view showing that the cataract instrument is in an extended mode.
- a cataract instrument ( 1 ) in accordance with the invention is composed of a tubular body ( 10 ), a shaft ( 20 ), two flexible leaves ( 30 ) and a resilient member ( 40 ).
- the tubular body ( 10 ) has a tapering front end ( 11 ) and an aperture ( 110 ) is defined through the front end ( 11 ).
- An end cover ( 13 ) is provided at a rear end ( 12 ) of the tubular body ( 10 ).
- a pole ( 130 ) is formed at the center of the end cover ( 13 ) for fastening the resilient member ( 40 ).
- Two pairs of openings ( 100 , 102 ) are oppositely defined through an outer periphery of the tubular body ( 10 ).
- the shaft ( 20 ) is received in the tubular body ( 10 ) and has two ring recesses ( 23 , 24 ) defined in an outer periphery thereof and near a front end ( 21 ) thereof.
- Two collars ( 25 ) are respectively secured in the ring recesses ( 23 , 24 ).
- a loop ( 26 ) made of elastic metal such as a stainless alloy steel is provided on the front end ( 21 ) and received in the tubular body ( 10 ).
- Each flexible leaf ( 30 ) has a ring ( 31 ) formed at a front end thereof and a flat portion ( 32 ) formed at a rear end thereof.
- the front ends of the flexible leaves ( 30 ) are respectively inserted into the front openings ( 100 ) and the rings ( 31 ) are fastened between the collars ( 25 ).
- the flat portions ( 32 ) of the flexible leaves ( 30 ) are respectively inserted into the rear openings ( 102 ) and abut an inner wall of the tubular body ( 10 ).
- the resilient member ( 40 ) is secured between a rear end ( 22 ) of the shaft ( 20 ) and the pole ( 130 ) of the end cover ( 30 ).
- the resilient member ( 40 ) is also made of a stainless alloy steel.
- the flexible leaves ( 30 ) are pressed and the loop ( 26 ) is extended out from the tubular body ( 10 ) to grip an opaque tissue that needs to be removed from a patient's eye. Afterward, the flexible leaves ( 30 ) are released to retract the loop ( 26 ) in the tubular body ( 10 ), and the opaque tissue attached is removed.
Abstract
Description
- 1. Field of the Invention
- The present is related to a medical instrument, and more particularly to an instrument for removing a cataract in an eye.
- 2. Description of Related Art
- Cataracts are opaque tissue which has grown in a lens of an eye causing a loss of sight. In an operation for recovering a cataract patient's sight, a doctor removes the opaque tissue by a bistoury and plants an artificial lens in the patient's eye. However, healthy tissue around the diseased tissue often is removed by the bistoury because the lens has a round profile. Furthermore, it is also not easy to completely remove the irregularly-shaped diseased tissue using the conventional bistoury.
- Therefore, the invention provides a cataract instrument to mitigate and/or obviate the aforementioned problems.
- The main objective of the invention is to provide a cataract instrument with which a doctor can effectively remove opaque tissue in a patient's eye.
- Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
- FIG. 1 is an exploded perspective view of a cataract instrument in accordance with the invention;
- FIG. 2 is a cross sectional view of the cataract instrument in FIG. 1, and in a retracted mode; and
- FIG. 3 is a cross sectional view showing that the cataract instrument is in an extended mode.
- Referring to FIGS. 1 and 2, a cataract instrument (1) in accordance with the invention is composed of a tubular body (10), a shaft (20), two flexible leaves (30) and a resilient member (40).
- The tubular body (10) has a tapering front end (11) and an aperture (110) is defined through the front end (11). An end cover (13) is provided at a rear end (12) of the tubular body (10). A pole (130) is formed at the center of the end cover (13) for fastening the resilient member (40). Two pairs of openings (100, 102) are oppositely defined through an outer periphery of the tubular body (10).
- The shaft (20) is received in the tubular body (10) and has two ring recesses (23, 24) defined in an outer periphery thereof and near a front end (21) thereof. Two collars (25) are respectively secured in the ring recesses (23, 24). A loop (26) made of elastic metal such as a stainless alloy steel is provided on the front end (21) and received in the tubular body (10).
- Each flexible leaf (30) has a ring (31) formed at a front end thereof and a flat portion (32) formed at a rear end thereof. The front ends of the flexible leaves (30) are respectively inserted into the front openings (100) and the rings (31) are fastened between the collars (25). The flat portions (32) of the flexible leaves (30) are respectively inserted into the rear openings (102) and abut an inner wall of the tubular body (10).
- The resilient member (40) is secured between a rear end (22) of the shaft (20) and the pole (130) of the end cover (30). The resilient member (40) is also made of a stainless alloy steel.
- Referring to FIG. 3, when the flexible leaves (30) are pressed to move the shaft (20) forward, the loop (26) is deformed and extends out the tubular body (10) through the aperture (26). The resilient member (40) is stretched according to the moving of the shaft (20). Because the loop (26) is made of the elastic metal, the loop (26) will return to the original shape after extending out the tubular body (10).
- When the flexible leaves (30) are released, under the force of the resilient member (40), the shaft (20) is moved backward and the loop (26) is retracted in the tubular body (10).
- In operation, the flexible leaves (30) are pressed and the loop (26) is extended out from the tubular body (10) to grip an opaque tissue that needs to be removed from a patient's eye. Afterward, the flexible leaves (30) are released to retract the loop (26) in the tubular body (10), and the opaque tissue attached is removed.
- It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/977,471 US6554843B1 (en) | 2001-10-15 | 2001-10-15 | Cataract instrument |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/977,471 US6554843B1 (en) | 2001-10-15 | 2001-10-15 | Cataract instrument |
Publications (2)
Publication Number | Publication Date |
---|---|
US20030074008A1 true US20030074008A1 (en) | 2003-04-17 |
US6554843B1 US6554843B1 (en) | 2003-04-29 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US09/977,471 Expired - Lifetime US6554843B1 (en) | 2001-10-15 | 2001-10-15 | Cataract instrument |
Country Status (1)
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US (1) | US6554843B1 (en) |
Cited By (8)
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WO2017161062A3 (en) * | 2016-03-17 | 2017-10-26 | Iantech, Inc. | Devices and methods for cutting lenticular tissue |
US10463535B2 (en) | 2014-09-17 | 2019-11-05 | Carl Zeiss Meditec Cataract Technology Inc. | Devices and methods for the removal of lenticular tissue |
US10478334B2 (en) | 2014-09-17 | 2019-11-19 | Carl Zeiss Meditec Cataract Technology Inc. | Devices and methods for cutting lenticular tissue |
CN110573117A (en) * | 2017-10-06 | 2019-12-13 | 格劳科斯公司 | Systems and methods for delivering multiple ocular implants |
US10932951B2 (en) | 2017-12-14 | 2021-03-02 | Carl Zeiss Meditec Cataract Technology Inc. | Devices and methods for ocular surgery |
US11197780B2 (en) | 2012-03-26 | 2021-12-14 | Glaukos Corporation | System and method for delivering multiple ocular implants |
US11413188B2 (en) | 2016-10-26 | 2022-08-16 | Carl Zeiss Meditec Cataract Technology Inc. | Devices and methods for cutting a lens in an eye |
US11723802B2 (en) | 2016-01-30 | 2023-08-15 | Carl Zeiss Meditec Cataract Technology Inc. | Devices and methods for ocular surgery |
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US7674293B2 (en) * | 2004-04-22 | 2010-03-09 | Facet Solutions, Inc. | Crossbar spinal prosthesis having a modular design and related implantation methods |
US6974478B2 (en) * | 1999-10-22 | 2005-12-13 | Archus Orthopedics, Inc. | Prostheses, systems and methods for replacement of natural facet joints with artificial facet joint surfaces |
US6610091B1 (en) * | 1999-10-22 | 2003-08-26 | Archus Orthopedics Inc. | Facet arthroplasty devices and methods |
US8187303B2 (en) * | 2004-04-22 | 2012-05-29 | Gmedelaware 2 Llc | Anti-rotation fixation element for spinal prostheses |
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US20040230304A1 (en) * | 2003-05-14 | 2004-11-18 | Archus Orthopedics Inc. | Prostheses, tools and methods for replacement of natural facet joints with artifical facet joint surfaces |
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US7074238B2 (en) | 2003-07-08 | 2006-07-11 | Archus Orthopedics, Inc. | Prostheses, tools and methods for replacement of natural facet joints with artificial facet joint surfaces |
US20050131406A1 (en) | 2003-12-15 | 2005-06-16 | Archus Orthopedics, Inc. | Polyaxial adjustment of facet joint prostheses |
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US10485700B1 (en) * | 2019-06-24 | 2019-11-26 | Richard Mackool | Ophthalmic surgical instruments and snares thereof |
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Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US614854A (en) * | 1898-11-29 | Intubator | ||
US4726367A (en) * | 1985-08-19 | 1988-02-23 | Shoemaker David W | Surgical instrument for implanting an intraocular lens |
US5066297A (en) * | 1989-01-23 | 1991-11-19 | Cumming J Stuart | Intraocular lens insertion device |
US5098439A (en) * | 1989-04-12 | 1992-03-24 | Allergan, Inc. | Small incision intraocular lens insertion apparatus |
US5171314A (en) * | 1990-07-24 | 1992-12-15 | Andrew Surgical, Inc. | Surgical snare |
US5219350A (en) * | 1990-10-05 | 1993-06-15 | Emerson Clarence A | Medical instrument |
US5741270A (en) * | 1997-02-28 | 1998-04-21 | Lumend, Inc. | Manual actuator for a catheter system for treating a vascular occlusion |
US6156042A (en) * | 1997-11-17 | 2000-12-05 | Aramant; Robert B. | Retinal tissue implantation instrument |
US5902314A (en) * | 1998-01-22 | 1999-05-11 | Koch; Craig S. | Medical instrument for removing lumen obstructions |
JP3533107B2 (en) * | 1999-04-26 | 2004-05-31 | ペンタックス株式会社 | Endoscope snare |
-
2001
- 2001-10-15 US US09/977,471 patent/US6554843B1/en not_active Expired - Lifetime
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US11944573B2 (en) | 2012-03-26 | 2024-04-02 | Glaukos Corporation | System and method for delivering multiple ocular implants |
US10463535B2 (en) | 2014-09-17 | 2019-11-05 | Carl Zeiss Meditec Cataract Technology Inc. | Devices and methods for the removal of lenticular tissue |
US10463536B2 (en) | 2014-09-17 | 2019-11-05 | Carl Zeiss Meditec Cataract Technology Inc. | Devices and methods for the removal of lenticular tissue |
US11813142B2 (en) | 2014-09-17 | 2023-11-14 | Carl Zeiss Meditec Cataract Technology Inc. | Devices and methods for cutting lenticular tissue |
US10478334B2 (en) | 2014-09-17 | 2019-11-19 | Carl Zeiss Meditec Cataract Technology Inc. | Devices and methods for cutting lenticular tissue |
US11723803B2 (en) | 2014-09-17 | 2023-08-15 | Carl Zeiss Meditec Cataract Technology Inc. | Devices and methods for the removal of lenticular tissue |
US10517758B1 (en) | 2014-09-17 | 2019-12-31 | Carl Zeiss Meditec Cataract Technology Inc. | Devices and methods for the removal of lenticular tissue |
US11723802B2 (en) | 2016-01-30 | 2023-08-15 | Carl Zeiss Meditec Cataract Technology Inc. | Devices and methods for ocular surgery |
RU2739878C2 (en) * | 2016-03-17 | 2020-12-29 | Карл Цайсс Медитек Катаракт Текнолоджи Инк. | Devices and methods for incising crystalline tissue |
WO2017161062A3 (en) * | 2016-03-17 | 2017-10-26 | Iantech, Inc. | Devices and methods for cutting lenticular tissue |
EP3429490A4 (en) * | 2016-03-17 | 2019-11-13 | Carl Zeiss Meditec Cataract Technology Inc. | Devices and methods for cutting lenticular tissue |
CN109195536A (en) * | 2016-03-17 | 2019-01-11 | 伊恩科技公司 | Device and method for cutting lens tissue |
US11413188B2 (en) | 2016-10-26 | 2022-08-16 | Carl Zeiss Meditec Cataract Technology Inc. | Devices and methods for cutting a lens in an eye |
US11376040B2 (en) | 2017-10-06 | 2022-07-05 | Glaukos Corporation | Systems and methods for delivering multiple ocular implants |
CN110573117A (en) * | 2017-10-06 | 2019-12-13 | 格劳科斯公司 | Systems and methods for delivering multiple ocular implants |
US10932951B2 (en) | 2017-12-14 | 2021-03-02 | Carl Zeiss Meditec Cataract Technology Inc. | Devices and methods for ocular surgery |
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AS | Assignment |
Owner name: UNIVERSAL OPTICAL CO., LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:OU, SHU-FONG;REEL/FRAME:012266/0647 Effective date: 20011011 |
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Owner name: UNIVERSAL VISION BIOTECHNOLOGY CO. LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:UNIVERSAL OPTICAL CO. LTD.;REEL/FRAME:015780/0271 Effective date: 20040109 |
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Owner name: UNIVERSAL VISION BIOTECHNOLOGY CO., LTD., CHINA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:UNIVERSAL OPTICAL CO., LTD.;REEL/FRAME:016365/0802 Effective date: 20040109 |
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