US20060241580A1 - Device and methods useable for treatment of glaucoma and other surgical procedures - Google Patents

Device and methods useable for treatment of glaucoma and other surgical procedures Download PDF

Info

Publication number
US20060241580A1
US20060241580A1 US10/560,266 US56026604A US2006241580A1 US 20060241580 A1 US20060241580 A1 US 20060241580A1 US 56026604 A US56026604 A US 56026604A US 2006241580 A1 US2006241580 A1 US 2006241580A1
Authority
US
United States
Prior art keywords
tissue
protector
cutting
device according
device
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.)
Abandoned
Application number
US10/560,266
Inventor
Michael Mittelstein
John Sorensen
Soheila Mirhashemi
James Georg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Neomedix Corp
Original Assignee
Neomedix Corp
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
Priority to US47725803P priority Critical
Application filed by Neomedix Corp filed Critical Neomedix Corp
Priority to PCT/US2004/018483 priority patent/WO2004110260A2/en
Priority to US10/560,266 priority patent/US20060241580A1/en
Assigned to NEOMEDIX CORPORATION reassignment NEOMEDIX CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GERG, JAMES B., MIRHASHEMI, SOHEILA, MITTELSTEIN, MICHAEL, SORENSEN, JOHN T.
Publication of US20060241580A1 publication Critical patent/US20060241580A1/en
Application status is Abandoned legal-status Critical

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F9/00Methods 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
    • A61F9/007Methods or devices for eye surgery
    • A61F9/00781Apparatus for modifying intraocular pressure, e.g. for glaucoma treatment
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14Probes or electrodes therefor
    • A61B18/1402Probes for open surgery
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14Probes or electrodes therefor
    • A61B18/1482Probes or electrodes therefor having a long rigid shaft for accessing the inner body transcutaneously in minimal invasive surgery, e.g. laparoscopy
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00526Methods of manufacturing
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00053Mechanical features of the instrument of device
    • A61B2018/00059Material properties
    • A61B2018/00071Electrical conductivity
    • A61B2018/00083Electrical conductivity low, i.e. electrically insulating
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00571Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00577Ablation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00571Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00601Cutting
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00964Features of probes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14Probes or electrodes therefor
    • A61B2018/1497Electrodes covering only part of the probe circumference
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2218/00Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2218/001Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body having means for irrigation and/or aspiration of substances to and/or from the surgical site
    • A61B2218/002Irrigation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2218/00Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2218/001Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body having means for irrigation and/or aspiration of substances to and/or from the surgical site
    • A61B2218/007Aspiration
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F9/00Methods 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
    • A61F9/007Methods or devices for eye surgery
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F9/00Methods 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
    • A61F9/007Methods or devices for eye surgery
    • A61F9/0079Methods or devices for eye surgery using non-laser electromagnetic radiation, e.g. non-coherent light or microwaves

Abstract

A device and method for cutting or ablating tissue in a human or veterinary patient includes an elongate probe having a distal end, a tissue cutting or ablating apparatus located adjacent within the distal end, and a tissue protector extending from the distal end. The protector generally has a first side and a second side and the tissue cutting or ablating apparatus is located adjacent to the first side thereof. The distal end is structured to be advanceable into tissue or otherwise placed and positioned within the patient's body such that tissue adjacent to the first side of the protector is cut away or ablated by the tissue cutting or ablation apparatus while tissue that is adjacent to the second side of the protector is not substantially damaged by the tissue cutting or ablating apparatus.

Description

    RELATED APPLICATIONS
  • This application claims priority to U.S. Provisional Patent Application No. 60/477,258 filed on Jun. 10, 2003, the entirety of which is expressly incorporated herein by reference.
  • BACKGROUND OF THE INVENTION
  • A. Symptoms and Etiology of Glaucoma
  • The term “glaucoma” refers generally to a group of diseases which cause progressive damage to the optic nerve and resultant optical field defects, vision loss and, in some cases, blindness. Glaucoma is frequently, but not always, accompanied by abnormally high intraocular pressure. Aqueous humor is continually produced by cells of the ciliary body and such aqueous humor fills the anterior chamber of the eye. Excess aqueous humor normally drains from the anterior chamber of the eye, through a structure known as the trabecular meshwork and then out of the eye through a series of drainage tubules. However, in many glaucoma patients, drainage of the aqueous humor through the trabecular meshwork is impaired, thereby causing the pressure of aqueous humor within the anterior chamber to increase.
  • In general, there are four types of glaucoma—primary, secondary, congenital and pigmentary. Primary glaucoma, which is the most common form, can be classified as either open angle or closed angle. Secondary glaucoma (e.g., neovascular glaucoma) occurs as a complication of a variety of other conditions, such as injury, inflammation, vascular disease and diabetes. Congenital glaucoma is elevated eye pressure present at birth due to a developmental defect in the eye's drainage mechanism. Pigmentary glaucoma is a rare form of the disease wherein pigment from the iris clogs the trabecular meshwork, preventing the drainage of aqueous humor from the anterior chamber.
  • Glaucoma is a leading cause of blindness in the United States. The loss of vision in glaucoma patients is typically progressive and may be due, at least in part, to compression of the vasculature of the retina and optic nerve as a result of increased intraocular pressure. It Is generally accepted that reducing intraocular pressure, through the use of drugs and/or surgery, can significantly reduce glaucomatous progression in patients who suffer from normal-tension glaucoma and can virtually halt glaucomatous progression in patients who suffer from primary open-angle glaucoma with elevated intraocular pressures. Furthermore, it is generally acknowledged that lowering intraocular pressure in glaucoma patients can prevent or lessen the irreversible glaucoma-associated destruction of optic nerve fibers and the resultant irreversible vision loss.
  • B. Surgical Treatment of Glaucoma
  • The surgical treatment of glaucoma Is generally aimed at either a) decreasing the amount of aqueous humor produced by the ciliary, body or b) improving drainage of aqueous humor from the anterior chamber of the eye.
  • The procedures aimed at decreasing the production of aqueous humor include cyclocryotherapy, wherein a cryosurgical probe is used to freeze a portion of the ciliary body, thereby destroying cells that produce aqueous humor, and laser cyclophotocoagulation, wherein a laser is used to destroy part of the ciliary body resulting in decreased production of aqueous humor.
  • The procedures intended to improve drainage of aqueous humor from the anterior chamber include trabeculoplasty, trabeculectomy, goniectomy and shunt implantation.
  • In trabeculoplasty, the surgeon uses a laser to create small holes through the trabecular meshwork to increase aqueous humor drainage through the normal drainage channels.
  • In trabeculectomy, the surgeon removes a tiny piece of the wall of the eye, which may include a portion of the trabecular meshwork, thereby creating a new drainage channel which bypasses the trabecular meshwork and the normal drainage channels. Aqueous humor then drains with relative ease through the new drainage channel into a reservoir known as a “bleb” that has been created underneath the conjunctiva. Aqueous humor that drains into the bleb is then absorbed by the body. Trabeculectomy is often used in patients who have been unsuccessfully treated with trabeculoplasty or who suffer from advanced glaucoma where optic nerve damage is progressing and intraocular pressure is significantly elevated.
  • In goniectomy, a tissue cutting or ablating device is inserted into the anterior chamber of the eye and used to remove a full thickness strip of the tissue from the trabecular meshwork overlying Schlemm's canal. In many cases, a strip of about 2 mm to about 10 mm in length and about 50 μm to about 200 μm in width is removed. This creates a permanent opening in the trabecular meshwork through which aqueous humor may drain. The goniectomy procedure and certain prior art instruments useable to perform such procedure are described in U.S. patent application Ser. No. 10/052,473 published as No. 2002/0111608A1 (Baerveldt), the entirety of which is expressly incorporated herein by reference.
  • In shunt implantation procedures, a small drainage tube or shunt is implanted in the eye such that aqueous humor may drain from the anterior chamber, through the shunt and into a surgically created sub-conjunctival pocket or “bleb.” Aqueous humor that drains into the bleb is then absorbed by the patient's body.
  • Trabeculoplasty, trabeculectomy and shunt implantation procedures are sometimes unsuccessful due to scarring of closure of the surgically created channels or holes and/or clogging of the drainage tube. Because it involves removal of a full thickness strip from the trabecular meshwork, the goniectomy procedure is less likely to fail due to scarring or natural closure of the surgically created channel. Although the previously described devices can be used to successfully perform goniectomy procedures, there remains a need in the art for the development of new tissue cutting and ablation instruments that may be used to perform the goniectomy procedure as well as other procedures where it is desired to remove a strip of tissue from the body of a human or veterinary patient.
  • SUMMARY OF THE INVENTION
  • The present invention provides a device for cutting or ablating tissue in a human or veterinary patient. This device generally comprises, consists essentially of, or consists of: a) an elongate probe having a distal end, b) a tissue cutting or ablating apparatus and c) a protector that extends from the probe. The protector generally has a first side and a second side and the tissue cutting or ablating apparatus is located adjacent to the first side of the protector. The distal end of the probe having protector extending therefrom, is structured to be advanceable into tissue or otherwise placed and positioned within the patient's body such that tissue adjacent to the first side of the protector is cut away or ablated by the tissue cutting or ablation apparatus while tissue that is adjacent to the second side of the protector is not substantially damaged by the tissue cutting or ablating apparatus.
  • Additionally, the protector may be formed entirely or partially of an insulating material. For example, the protector may be formed of a core made of an electrically and/or thermally conductive material, for example a conductive metallic material, and may include a non-conductive coating or covering, for example a polymer coating that is electrically and thermally insulating. In some embodiments of the invention, the electrically and thermally insulating material, hereinafter sometimes simply referred to as “coating” may comprise a flexible, pliable material in comparison with the more rigid core.
  • In some embodiments of the invention, the protector is configured not only to provide protection to tissue located adjacent to the second side of the protector, but also may be configured to facilitate positioning and/or advancement of the device within the surgical site. In this particular regard, above-incorporated United States Patent Application No. 2002/0111608A1 (Baerveldt) describes goniectomy devices that have a foot plate sized and configured to be inserted through the trabecular meshwork and into Schlemm's Canal and to, thereafter, advance through Schlemm's Canal as the device is used to remove a portion of the trabecular meshwork. In embodiments of the present invention that are used to remove portions of the trabecular meshwork (i.e., to perform a goniectomy procedure) the protector may be configured, for example shaped and sized, for insertion and advancement through Schlemm's Canal in substantially the same manner as that described in the above-incorporated United States Patent Application No. 2002/0111608A1 (Baerveldt).
  • It is to be appreciated that in embodiments of the device of the present invention that are designed and /or intended for use in tissue cutting or ablating applications other than goniectomy procedures, the protector may be of any other suitable configuration required to perform the desired protection and/or positioning/guidance functions.
  • The tissue cutting or ablating apparatus may comprise any suitable type of apparatus that is operative to cut or ablate tissue, for example a strip of tissue. For example, the cutting and ablating apparatus may comprise a electrosurgical or radiofrequency tissue cutting or ablation apparatus (e.g., monopolar or bipolar configured electrodes), apparatus (e.g., a light guide and/or lens) that emits light energy to cause thermal cutting or ablation of tissue (e.g., pulsed or non-pulsed optical incoherent high intensity light, pulsed or non-pulsed laser light, light that is infrared, visible and/or ultraviolet, etc.), mechanical tissue cutting or ablation apparatus (e.g., knife blade(s), scissor(s), rotating cutter(s), etc.), ultrasonic cutting or ablation apparatus (e.g., an ultrasound transmission member that extends through the device to a location adjacent the first side of the protector and undergoes axial or radial ultrasonic vibration), or any other suitable mechanism.
  • Optionally, the device may further include one or more lumen(s) for providing fluid infusion and/or aspiration to and/or from the surgical site, for example from a remote infusion and/or aspiration source.
  • In some embodiments of the invention, the device is in the form of an elongate probe that is attachable to a surgical handpiece for facilitating manual manipulation of the probe. In some embodiments of the invention, the entire device is structured and intended for one time use, and in other embodiments of the invention, one or more components of the device are autoclavable and reusable. For example, in some embodiments of the invention, the device comprises a disposable catheter probe having a molded distal end including the protector and/or the cutting or ablating apparatus integrally molded or formed in the distal end of the catheter. In other embodiments of the invention, the device includes a elongate probe, made of one or more segments of stainless steel hypotubing, and including a proximal portion that is configured to be received within a conventional surgical handpiece, which may include various functionable switches, conduit ports, electrical connections and the like for enabling manual operation of the various functions of the device to be described elsewhere herein.
  • For example, the present device may be configured and structured to be couplable to 1) a console, for example, a control console, or other separate apparatus having for example, but not limited to an electosurgical signal generator for transmitting energy needed to operate the tissue cutting or ablation apparatus, for example an electosurgical signal generator suitable for providing electrical energy to the cutting or ablating apparatus utilizing incoherent or laser light energy, such as infrared, visible, and/or ultraviolet wave energy, rotating shaft or other mechanical drive, etc., and/or 2) an aspiration source, for example comprising a pump mechanism for aspirating fluid from the surgical site through the optional aspiration lumen (if present) of the device and/or 3) a source of fluid, for example an irrigation source, for infusing or irrigating the surgical site through the optional fluid infusion lumen (if present) of the device. Examples of commercially available surgical consoles that may be suitable for use with the present invention, for example, surgical consoles of which the present devices may be attached or connected to, include but are not limited to the Infinity/Accurus/Legacy Systems, available from Alcon, inc., Fort Worth, Tex., the Millinium System, available from the Bausch & Lomb Corporation, Rochester, N.Y., or the Sovereign System, available from Advanced Medical Optics, Santa Ana, Calif.
  • Further in accordance with the invention, some embodiments of the device may be constructed to cut and remove a strip or pieces of tissue from the patient's body and to permit retrieval of that strip or pieces of tissue to prevent them from causing untoward postsurgical effects within the body or for preservation, biopsy, chemical/biological analysis or other purposes. In embodiments of the device that are equipped with the optional aspiration lumen, the aspiration lumen may be positioned such that a strip or pieces of tissue cut or severed by the tissue cutting or ablation apparatus may be withdrawn from the body through the aspiration lumen.
  • Still further in accordance with the invention, the width or size of the tissue that is cut or ablated from the patient's body, as well as the degree to which adjacent tissues that remain in the body are damaged by thermal energy or other affects of the cutting or ablation process, may be controlled in some embodiments of the device by controlling the amount of power or energy that is delivered to the tissue cutting or ablation apparatus. In this regard, in embodiments where the tissue cutting or ablation apparatus is a monopolar or bipolar electrosurgical apparatus, there will be a high power density zone closest to the electrode(s) wherein thermal cutting or ablation of tissue will occur. This high power density zone may be surrounded by a medium power density zone wherein the thermal energy is great enough to also cut or ablate tissue under some circumstances. The voltage and/or current supplied to the electrode(s) may be adjusted to control the size and extent of the high power density zone and/or the surrounding medium power density zone, thereby providing for cutting or ablation of a strip of tissue of a desired size while avoiding significant or irreparable damage to tissue that is to be protected (e.g., tissue located on the second side of the protector) or other tissue at the margins of or in close proximity to the strip of tissue that has been cut or ablated.
  • Still further in accordance with the invention there are provided methods for performing medical or surgical procedures, including percutaneous surgical procedures, using the devices of the present invention. For example, the present invention provides method for performing a goniectomy procedure, wherein the protector of the device, for example the device of the present invention described elsewhere herein, is inserted through the trabecular meshwork into Schlemm's Canal, and the tissue cutting or ablating apparatus is energized and the device is advanced in a manner that results in cutting or ablation of a portion of the trabecular meshwork. In a general tissue cutting procedure, the protector of the device is inserted to a desired position, the tissue cutting or ablation device is energized and the device is advanced, thereby causing a strip to be cut or ablated from tissue that becomes positioned on the first side of the protector while no substantial damage occurs to tissue located on the second side of the protector.
  • Further in accordance with the invention, some embodiments of the device may be fabricated in part from tubing, such as stainless steel hypotubing (referred to as “tube-fabricated” embodiments. In such tube-fabricated embodiments, the device generally comprises an outer tube and an inner tube, wherein the inner tube extends through the lumen of the outer tube and a distal portion of the inner tube extends out of and beyond the distal end of the outer tube. The protector is formed on the distal end of the inner tube and the tissue cutting or ablation apparatus may be formed on and/or inserted through the inner tube such that it is positioned at a location adjacent to the first side of the protector. Also, the lumens of the inner and/or outer tubes may be used for infusion and/or aspiration of fluid.
  • Still further in accordance with the invention, there is provided a method for manufacturing the tube-fabricated embodiments of the device. Such method generally comprises A) providing an inner tube and an outer tube and inserting the inner tube through the lumen of the outer tube such that a distal portion of the inner tube extends out of and beyond the distal end of the outer tube, B) forming cuts in the distal portion of the inner tube to form at least one leg thereon, C) bending a leg formed in Step B to create a protector having a first side and a second side and D) positioning the tissue cutting or ablation apparatus adjacent to the first side of the protector. Optionally, in some embodiments, the method may further comprise the step of E) applying an insulating material (e.g., a polymer such as polyimide) to the protector. Such insulating material may be applied to the protector by any suitable method, such as by single layer dip coating, multiple layer dip coating, spray coating, painting, electrostatic powder deposition, vapor deposition, advancement of a fabricated insulating cover over the protector, etc.
  • Still further in accordance with the invention, in manufacturing some tube-fabricated embodiments wherein the tissue cutting or ablation apparatus comprises an electrosurgical apparatus, an electrode may be formed by additionally cutting and bending a part of the distal portion of the inner tube to form such electrode. In this regard, Step B of the above-summarized manufacturing method may comprise cutting the distal portion of the inner tube to create first and second legs thereon and, thereafter, Step C of the above-summarized manufacturing method may comprise i) bending the first leg to create a protector having a first side and a second side and ii) bending the second leg to create an electrode adjacent to the first side of the protector. Electrical energy may then be transmitted through the inner tube to the electrode formed on its distal portion. In embodiments where the electrosurgical apparatus is monopolar, only one electrode need be formed adjacent to the first side of the protector and an exposed or capacitively coupled grounding electrode may be attached to the patient's body near the site of the surgery or elsewhere on the body. In embodiments where the electrosurgical apparatus is bipolar, it will be necessary to locate a second electrode adjacent to the first side of the protector. Such second electrode may be so positioned by advancing an electrical conduction member that has an electrode surface on its distal end (e.g., an insulated wire,having the insulation removed from its distal tip) through the lumen of the inner tube to a position where the electrode surface of the electrical conduction member is located adjacent to the first side of the protector and a desired distance from the other electrode. The electrical conduction member/second electrode may be secured in place by adhesive, mechanical constraint or any other suitable affixation means. In this regard, aperture(s) may be formed in one or both of the leg(s) formed in Step B and the electrically conductive member may extend through such aperture(s) such that the aperture(s) will localize, guide the positioning of, hold, stabilize or affix the location of the electrical conducting member/second electrode.
  • Further aspects and elements of the invention will be understood by those of skill in the art upon reading the detailed description of specific examples set forth herebelow.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a perspective view of a system incorporating an electrosurgical goniectomy device of the present invention.
  • FIG. 2 is an enlarged perspective view of section 2 of FIG. 1.
  • FIGS. 3A-3G are step-by-step showings of an example of a method for manufacturing an electrosurgical goniectomy device of the present invention.
  • FIG. 4A is a cross section of a human eye having electrosurgical goniectomy device inserted thereinto.
  • FIG. 4B is an enlarged view of a portion of the human eye showing the angle, Schlemm's Canal and the trabecular meshwork.
  • FIG. 4C is an enlarged view of a distal portion of the device being used to remove trabecular meshwork tissue from an eye during a goniectomy procedure.
  • FIG. 5A is a perspective view of a distal portion of another electrosurgical goniectomy device of the present invention.
  • FIG. 5B is a side view of the distal end of the electrosurgical goniectomy device of FIG. 5A.
  • DETAILED DESCRIPTION
  • Turning now to FIG. 1, a device in accordance with the present invention for cutting and/or ablating tissue, for example, tissue of an eye during a goniectomy procedure, is shown generally at 10. The device 10 generally comprises an elongate handpiece or probe having a distal end having a tissue cutting or ablating apparatus 4 disposed generally within the distal end or distal portion of the probe 3. The tissue cutting or ablating apparatus 4 may be a suitable mechanism designed to cut, ablate, cauterize, sever and/or remove tissue from a target region, for example, from a surgical site. The device 10 may be part of a larger surgical system 11, for example, the device 10 may be structured and adapted to be operatively connectable to a separate apparatus, for example a surgical control console 70 for controlling and powering operation of various functions of the device during a surgical procedure. Examples of surgical consoles that may be suitable include but are not limited to the Infinity/Accurus/Legacy Systems, available from Alcon, Inc., Fort Worth, Tex., the Millinium System, available from the Bausch & Lomb Corporation, Rochester, N.Y., or the Sovereign System, available from Advanced Medical Optics, Santa Ana, Calif.
  • A distal end of a tube-fabricated embodiment of the device 10 is shown in FIG. 2. This particular device 10 is designed to be especially effective for cutting/ablating and sometimes removing tissue, for example portions of the trabecular meshwork during a goniectomy procedure. It should be appreciated that although the following description will generally refer to this specific embodiment, the scope of the present invention is not intended to be limited thereby. For example, the device 10 may be modified as necessary and/or desirable to be effective for use in surgical procedures other than goniectomy procedures and such modified devices are considered to be within the scope of the present invention.
  • The tube-fabricated device 10 generally comprises a probe 3 comprising an outer tube 12 and an inner tube 14 disposed therein and having a distal portion extending or projecting therefrom.
  • As shown in FIG. 2, the inner tube 14 has a smaller outer diameter than an inner diameter of the outer tube 12 such that when inner tube 14 is positioned within the outer tube 12, for example, substantially coaxial therewith, the outer tube 12 inner surface is spaced apart from the inner tube 14 outer surface as shown.
  • More specifically, the outer tube 12 defines a lumen 16 which may serve as an infusion lumen, hereinafter sometime referred to as an irrigation lumen. For example, the outer tube 12 may include an irrigation or infusion port 26 disposed on the distal portion of the outer tube 12 as shown. During a surgical procedure, irrigation fluid, such as a balanced salt solution (BSS) may be passed through lumen 16 and out of port 26 and into the anterior chamber of an eye as needed to maintain a desired intraocular pressure in the eye.
  • The inner tube 14 generally contains or defines the cutting or ablating portion of the device 10, as will be described in greater detail elsewhere herein. The inner tube 14 also defines a lumen 19, preferably having a port adjacent the cutting or ablating apparatus, wherein the lumen 19 may serve as an aspiration lumen during the surgical procedure. Accordingly, an aspiration source may be connected to inner tube lumen 19 to allow cut tissue, excess fluid or other material to be suctioned or removed from the surgical site during the procedure.
  • In embodiments of the device that are designed for cutting or ablating tissue during a goniectomy procedure, the device 10 is preferably sized and configured such that the distal end thereof can be placed within an eye, for example within the anterior chamber of the eye, as far as and including the irrigation port 26. It is noted that irrigation port 26 may alternatively be utilized as an aspiration port in some circumstances, if desirable.
  • It is further contemplated that in some instances it may be helpful to utilize the aspiration lumen 19 as a temporary or even permanent irrigation lumen such that irrigation fluid is passed from the distal opening of the inner tube 14. For example, as the device 10 is initially being inserted into the anterior chamber prior to the cutting or ablation of tissue, it may be helpful to pass irrigation fluid into the anterior chamber of the eye through the inner tube 14 in order to maintain ocular pressure and facilitate further insertion of the distal end of the relatively wider outer tube 12 of the device 10. Once the distal end of the outer tube 12 is in place in the anterior chamber a sufficiently distance such that port 26 is located within the anterior chamber, irrigation of the eye may be moved to the outer tube irrigation port 26. Initial irrigation by means of the inner lumen 19 may also be helpful in causing gentle widening of the insertion site so as to more easily allow insertion of the relatively wider outer tube through the insertion site.
  • Preferably, all components of the device 10 are comprised of surgical grade materials. In addition, with the exception of the cutting or ablating surfaces of the device 10, exposed surfaces of the distal end of the device are preferably formed and/or treated such that they include substantially no sharp portions, burrs or contaminants. For example, in the embodiment shown in FIG. 2, the distal most portion of the outer tube 12 is rounded or frustro-conical in shape, so as to prevent or reduce the occurrence of any substantial damage to tissue upon insertion, operation and removal of the device 10 from the eye.
  • For devices of the invention designed for goniectomy surgical procedures, the outer tube 12 may comprise about 19 gauge to about 20 gauge stainless steel hypotubing, and the inner tube 14 may comprise about 25 gauge stainless steel hypotubing. In addition, preferably for such devices of the invention, the projecting distal portion of the inner tube 14 has a length L of between about 1 mm and about 4 mm, and more preferably about 2.5 mm.
  • The cutting or ablating portion of the device 10 may comprise any suitable mechanism for cutting or ablating tissue. For example, in the specific embodiment shown in FIG. 2, the cutting or ablating apparatus comprises an electrosurgical tissue cutting/ablating apparatus. More specifically, the device 10 includes a bipolar electrode mechanism comprising a first pole or first electrode 22 and a second pole or second electrode 21. In use, one of the first and second electrodes is provided with electrical energy and to operate as an active electrode and the other of the first and second electrodes operates as a return electrode. When such an electrode is powered it generates a zone of high energy in immediate proximity of the electrode, and a zone of relatively lower energy outside of the zone of high energy. This zone of relatively lower energy is a zone of thermal energy that is effective in cutting or ablating ocular tissue, for instance, particularly tissue of the trabecular meshwork. The return electrode may be electrically couplable to the patient's body.
  • It is contemplated that alternative embodiments of the invention may include any other suitable mechanism or apparatus that is operative to cut or ablate tissue, for example a strip of tissue, such as a monopolar electrode mechanism, a radiofrequency tissue cutting or ablation apparatus, apparatus (e.g., a light guide and/or lens) that emits light energy to cause thermal cutting or ablation of tissue (e.g., pulsed or non-pulsed optical incoherent high intensity light, pulsed or non-pulsed laser light, light that is infrared, visible and/or ultraviolet, etc.), mechanical tissue cutting or ablation apparatus (e.g., knife blade(s), scissor(s), rotating cutter(s), etc.), ultrasonic cutting or ablation apparatus (e.g., an ultrasound transmission member that extends through the device to a location adjacent the first side of the protector and undergoes axial or radial ultrasonic vibration) or others.
  • The device 10 further comprises a protector 24 having a first side located adjacent to the cutting or ablating apparatus, and a second side located on a distal-most portion of the device 10. The protector 24 is structured and designed to preventing damage to tissue located near the tissue to be cut. For example, the protector 24 is designed to protect or prevent any substantial damage to surfaces of Schlemm's canal while the device 10 is being utilized to cut portions of the trabecular meshwork during a goniectomy procedure.
  • More particularly, the device 10 may be structured such that the tissue cutting or ablating apparatus (e.g. the electrode mechanism 20,22) is structured to cause thermal cutting or ablating of tissue and the protector 24 is structured to isolate or protect adjacent tissue located adjacent the second side of the protector 24. For example, the protector 24 may be formed partially or entirely of an insulating material. Alternatively or additionally, the protector 24 may be formed of metal and include a coating 30 made of an insulating material, such as a polymer, for example, a polyimide material.
  • Turning back now to FIG. 1, the cutting or ablating device,10 may be used as part of a surgical system 11. The system 11 may comprise or consist of a surgical control console 70 including a high frequency electrosurgical generator module 76 and an aspiration pump module 74. A source of irrigation fluid 72 may also be provided which preferably operates as a gravity feed irrigation line. Control of the console 70 during surgical procedures may be accomplished by use of an aspiration footpedal 78 which controls an aspiration pump 74, and use of an electrosurgical footpedal 80 which controls the electrosurgical generator 76. One or both of the footpedals 78 and 80 may be pressure sensitive such that operating power is controllable by the depth or distance at which the footpedal is pressed or moved by the operator. Furthermore, footpedals 78 and 80 may be combined into a single functional unit. The cutting or ablation device 10 may be provided as a pre-sterilized, single-use disposable probe that is attachable to a standard surgical handpiece. After the cutting and ablation device has been attached to the handpiece, further connections to the electrosurgical generator module 76, the aspiration pump module 74 and the source of irrigation fluid 72, may be implemented as shown. Thus, the cutting or ablation device 10 has irrigation, aspiration, and electrosurgical capabilities, as described herein.
  • A surgical procedure using the device 10 of the present invention may be performed as follows.
  • Method for Performing Goniectomy
  • The device 10 and system 11 are useable to perform a variety of procedures wherein it is desired to form an incision or opening of a desired width or to remove, from a mass of tissue, a strip of tissue of a desired width.
  • FIGS. 4A-4C, show an example of a goniectomy procedure that may be performed to treat glaucoma, using the device 10 and system 11 of the present invention. This goniectomy procedure is an ab interno surgical procedure wherein a sector of the trabecular meshwork TM is removed from the eye of the patient to facilitate drainage of aqueous humor from the anterior chamber AC of the eye through Shlemm's Canal and the associated collector channels CC, thereby relieving elevated intraocular pressure.
  • First, a small incision IN is made in the cornea C at about 3 o'clock in the left eye, or at about 9 o'clock in the right eye. A 1.5 mm slit knife may be used to make this incision IN.
  • The device 10 is attached to the source of irrigation fluid 72 (e.g., balanced salt solution) such that irrigation fluid will flow through lumen 16 of the outer tube 12 and out of outflow aperture 26. The device 10 is then inserted through the incision IN and into the anterior chamber AC (with irrigation flowing). In some cases, during the insertion of the device 10, the source of irrigation fluid 72 may initially connected to the device such that the irrigation fluid will flow through the lumen 19 of the distal portion of inner tube 14. In this manner, irrigation fluid will begin to infuse into the anterior chamber AC as soon as the distal tip of the protruding distal portion of inner tube 14 has entered the anterior chamber AC, rather than being delayed until the larger outer tube 12 and aperture 26 have been advanced through the incision IN and into the anterior chamber. By this alternative approach, irrigation fluid may be caused to flow out of the incision IN as the device 10 is being inserted, thereby spreading or opening the incision. Such spreading or opening of the incision IN may facilitate advancement of the larger diameter outer tube 12 through the incision IN. In cases where this alternative approach is used, the source of infusion fluid 72 will be disconnected from lumen 19 after the device has been inserted into the anterior chamber AC and, thereafter, the infusion fluid source 72 will be reconnected to lumen 16 of outer tube 12 such that infusion fluid will flow out of aperture 26. Negative pressure (e.g., via aspiration pump module 74) may then be applied to lumen 19 of the inner tube 14 so as to aspirate fluid and debris through lumen 19. The vertical height of the infusion fluid source 72 may be adjusted to provide sufficient gravity feed of infusion fluid to make up for the volume of fluid or matter being aspirated from the anterior chamber AC through lumen 19, thereby maintaining the desired pressure of fluid within the anterior chamber AC during the procedure.
  • A lens device (e.g. Ocular Single Mirror Gonio, Model OSMG, Ocular instruments, Bellevue, Wash.) may be positioned on the anterior aspect of the eye to enable the physician to clearly visualize the angle A where the segment of trabecular meshwork TM is to be removed. Under such visualization, the device 10 is advanced until the distal tip of the cutter tube or inner tube 14 is positioned adjacent to the trabecular meshwork TM at the location where the strip is to be removed. Thereafter, the protector is advanced through the trabecular meshwork TM and into Schlemm's Canal SC.
  • The tissue cutting or ablation apparatus, such as bipolar electrodes 21, 22 or 46, 47, is/are then energized and the device 10 is advanced along Schlemm's Canal, thereby causing the cutting or ablation apparatus, such as bipolar electrodes 21 and 22, to cut or ablate a strip of the trabecular meshwork TM to create opening O, as shown in FIG. 4C.
  • in the bipolar embodiments of the device 10 shown in FIGS. 2 or 5A-5B, discharge of electrosurgical energy via the bipolar electrodes 21, 22 or 46, 47 will remove a full thickness strip of tissue from the trabecular meshwork TM without traumatizing the underlying walls of Schlemm's canal and/or the collector channels, as those structures remain protected from the electrosurgical energy by the advancing protector 24 or 52. The insulated protector 24 or 52 serves two primary purposes: 1) the size and shape of the protector 24 or 52 allows its placement in Schlemm's Canal SC to facilitate guiding the device along Schlemm's Canal SC during the cutting of the strip from the trabecular meshwork TM and 2) the protector 24 or 52 protects and shields the underlying walls of Schlemm's Canal SC and the collector channels from trauma during electrosurgical discharge.
  • After a strip of tissue of the desired length (e.g., about 2 mm to about 10 mm) has been removed, the tissue cutting or ablation apparatus, such as bipolar electrodes 21, 22 or 46, 47, is/are then de-energized, the aspiration and possibly infusion are stopped and the device 10 is removed from the eye.
  • Following completion of the surgery, aqueous humor will drain from the anterior chamber AC through the opening O that was created by removal of the strip of tissue from the trabecular meshwork TM.
  • The present invention further provides a method for manufacturing a device such as tube-fabricated device 10 shown in FIG. 2.
  • A method in accordance with the present invention for manufacturing the tube-fabricated device 10 generally comprises the steps of providing outer tube 12 and inner tube 14 made of suitable material, for example hypotubing or other material suitable for use in ophthalmic surgery as described elsewhere herein, and inserting the inner tube within the lumen 16 of the outer tube 12 such that a distal portion of inner tube 14 extends or projects a sufficient distance beyond a distal end of the outer tube 12, as shown.
  • The method further comprises the steps of forming at least one leg on a distal portion of the inner tube 14, for example by beveling the distal end of the inner tube 14 and forming cuts therein and bending the at least one leg to form the protector 24.
  • FIGS. 3A-3G show the steps involved in manufacturing the device 10 shown in FIG. 2, in accordance with one embodiment of the present invention.
  • Turning now to FIGS. 3A and 3A′, the step of forming at least one leg comprises cutting the distal portion of the inner tube 14, for example, having a beveled distal end of about 45 degrees, to form a first leg 24A and a second leg 22A. The legs 22A and 24A may be formed by cutting substantially U-shaped or V-shaped grooves or notches 28 into the beveled distal portion of the inner tube 14 in order to form relatively longer first leg 24A and a relatively shorter second leg 22A. In this embodiment, the second leg 22A includes a narrow distal tip region and a relatively wider flared region proximal thereto.
  • The method may further comprise providing the cutting or ablating apparatus of the device 10 adjacent the first side of the protector 24. More particularly, this step may comprise forming the electrode mechanism from a portion of the inner tube 14, for example, from the second leg 22A. For example., turning now to FIG. 3B, the final position of the second leg 22A is pressed or bent radially inwardly as shown in FIG. 3B such that the distal most tip of the second leg 22A is appropriately positioned to form one pole of the bipolar electrode mechanism. In order to accommodate a second pole of the bipolar electrode mechanism, the method may comprise forming an aperture 19 in the second leg 22A, shown more clearly in FIG. 3B′ and passing a wire or other electrically conductive member 20 (hereinafter “electrode member 20”) therethrough. The aperture 19 is cut to a size and configuration such that it will accommodate the electrode member 20 such as shown in FIG. 2.
  • The step of bending the second leg 22A may be accomplished by using tweezers or other suitable tool for gripping and bending the second leg 22A. The distal tip of the second leg 22A (which will form a pole of the electrode) is positioned such that it is substantially aligned with a central axis of the inner tube 14 in the final manufacturing process.
  • Next, the protector 24 (shown in FIG. 2) may be formed as follows. Second leg 22A is bent slightly radially outwardly, as shown in FIGS. 3C and 3C′. A forming member, for example a pin, wire or other preferably rigid cylindrical member (shown in dashed lines in FIGS. 3C and 3D) is then placed between the first leg 24A and second leg 22A.
  • Referring now to FIGS. 3D and 3D′, the first leg 24A is pressed, bent or otherwise shaped, for example by using substantially constant radial pressure, around the forming member, to form the curved configuration of first leg 24A shown in FIG. 3D.
  • Protector 24, shown in FIGS. 3E and 3E′ may be formed by insulating the bent first leg 24A with insulating coating 30. This step may be accomplished using any suitable means, for example, by dip coating, spray coating, or advancement of a fabricated cover over the first leg 24A. The step of insulating or providing insulation may comprise dipping the first leg 22A in a polymer precursor, for example a liquid polyimide, and allowing the liquid polyimide to cure. In some embodiments of the invention, liquid polyimide is applied to both the inside, or first surface, and the outside, or second surface by using a suitable applicator, for example, a tip of a small diameter wire, for example 0.006″ diameter wire dipped in a liquid polyimide. In any event, care is taken not to coat the distal tip of second leg 22A.
  • Turning now to FIGS. 3F and 3F′, the present invention may comprise the step of forming first electrode 22, (hereinafter sometimes referred to as first pole of bipolar electrode) from distal portion of the inner tube 14. This step may be accomplished by bending second leg 22A radially inwardly, or in some circumstances, allowing second leg 22A to rebound or spring back to its preformed, inwardly bent shape upon removal of the cylindrical forming member (shown in dashed lines in FIGS. 3C and 3D).
  • As shown, in this particular embodiment, upon being bent inwardly, the distal tip of the second leg 22A is positioned such that it is spaced apart from and adjacent the first side (inside surface) of the protector 24 and is substantially aligned with the central axis of the inner tube 14. The distal most tip of the second leg 22A forms the first pole of the bipolar electrode cutting mechanism.
  • Next, electrode member 20 is inserted or passed through aperture 19 as shown in FIG. 3G such that a distal tip of the electrode member 20 will form the second pole of the bipolar electrode. For example, the first pole and the second pole of the bipolar electrode are preferably spaced apart from each other a distance of about 1/20 mm. The electrodes 21 and 22 are operated to create high temperature region spanning/bridging the electrodes 21 and 22, for example by formation of a high energy plasma. More specifically, the method of the invention may further include the step of providing the electrode member 20 by stripping or removing a distal most portion of an insulated electrically conductive wire in order to expose the conductive portion thereof which will form the second pole or second electrode 21 of the bipolar electrode mechanism. In other words, the electrically conductive member 20 may comprise an insulated wire 20′ having insulation 23 stripped or removed from a distal tip thereof as shown in FIG. 2 and FIG. 3G, to expose the electrically conductive tip. Alternatively, the method may comprise providing a non-insulated electrically conductive wire and applying insulation to a proximal portion of the wire while leaving a distal most portion exposed. Such insulation may be applied in a liquid form, for example, the insulation may be applied as liquid polyimide, which is then cured.
  • Once the second electrode 21 is appropriately placed, electrically conductive member 20 is secured in place, for example by securing the electrically conductive member 20 to the inner tube 14 for example, by adhesive or other suitable means.
  • The bipolar electrode and the first side of the protector 24 are spaced apart from each other a distance suitable to receive the tissue to be cut by the device 10. It is noted that preferably, in this embodiment of the invention, the distal-most tip of the electrically conductive member 20 is somewhat proximally located with respect to the distal-most tip of the second leg 22A in order to facilitate operation of the device, for example to substantially prevent or reduce the occurrence of tissue becoming unintentionally trapped or wedged within the device. This feature of the invention is shown most clearly in FIG. 3G.
  • Turning now to FIG. 5A, an alternative distal end 40 of the tube-fabricated embodiment of the invention is shown, including outer tube 42 and inner tube 44 that are similar or substantially identical to outer tube 12 and inner tube 14 described hereinabove with respect to the device 10 shown in FIG. 2.
  • This alternative distal end may operate is substantially the same fashion as the distal end of device 10 shown in FIG. 2. However, the alternative distal end is formed somewhat differently than the distal end shown in FIG. 2.
  • The differences may be more readily appreciated by comparing the distal end shown in FIG. 5B with the distal end shown in FIG. 3G. For example, it can be appreciated that second leg 46 (FIG. 5B) which may form a first pole or first electrode of the electrode mechanism, is not bent radially inwardly like second leg 22 (FIG. 3G). In addition electrically conductive member 45 may be positioned or disposed generally along a central axis of the inner tube 44 rather than outwardly therefrom such as electrically conductive member 20. The electrically conductive member 45 includes second pole or second electrode 47 of the electrode mechanism.
  • As shown, electrically conductive member 45 may be held in place by means of bracket portions 49 formed from portions of second leg 46, as shown. The bracket portions 49 are preferably utilized for facilitating positioning of the electrically conductive member 45 during assembly. Adhesive and/or other means may be provided for securing the electrically conductive member 45 in place.
  • As shown, outer tube 42 may define an irrigation lumen in fluid communication with irrigation port 48. Inner tube 44 may include aspiration/irrigation lumen 50.
  • The invention has been described herein with reference to certain examples and embodiments only. No effort has been made to exhaustively describe all possible examples and embodiments of the invention. Indeed, those of skill in the art will appreciate that various additions, deletions, modifications and other changes may be made to the above-described examples and embodiments, without departing from the intended spirit and scope of the invention as recited in the following claims. It is intended that all such additions, deletions, modifications and other changes be included within the scope of the following claims.

Claims (53)

1. A device for cutting or ablating tissue in a human or veterinary patient, said device comprising:
an elongate probe having a distal end;
a tissue cutting or ablating apparatus; and
a protector that extends from the probe, said protector having a first side and a second side, said protector being positionable such that tissue that is to be cut or ablated is adjacent to the first side of the protector and tissue that is to be protected is adjacent to the second side of the protector, said protector being at least partially formed of an insulating material;
the tissue cutting or ablating apparatus being useable to cut or ablate tissue that is located adjacent to the first side of the protector without causing substantial damage to tissue located adjacent to the second side of the protector.
2. A device according to claim 1 wherein the tissue cutting or ablating apparatus causes thermal cutting or ablation of tissue and wherein the protector is at least partially formed of a thermal insulating material that deters thermal energy from causing substantial damage to tissue located adjacent to the second side of the protector.
3. A device according to claim 1 wherein the tissue cutting or ablating apparatus comprises an electrosurgical apparatus and wherein the protector is at least partially formed of an insulating material that deters conduction of electrical power through the protector.
4. A device according to claim 1 wherein the protector is formed entirely of insulating material.
5. A device according to claim 1 herein the protector is formed of metal that is at least partially covered by an insulating material.
6. A device according to claim 1 wherein the insulating material comprises a at least partial polymer coating.
7. A device according to claim 6 wherein the polymer coating comprises a polyimide coating.
8. A device according to claim 7 wherein the polymer coating is applied to at least a portion of the protector by dipping at least a portion of the protector into a liquid polymer solution which subsequently dries and forms a coating.
9. A device according to claim 1 further comprising an infusion lumen through which fluid can be infused into the patient's body and an aspiration lumen through which fluid can be aspirated out of the patent's body.
10. A device according to claim 1 wherein the tissue cutting or ablating apparatus comprises an electrosurgical tissue cutting or ablating apparatus.
11. A device according to claim 10 wherein the tissue cutting or ablating apparatus comprises a bipolar electrode configuration having first and second electrode surfaces.
12. A device according to claim 10 wherein the tissue cutting or ablating apparatus comprises a monopolar electrode and wherein the device further comprises a return electrode that is electrically couplable to the patient's body.
13. A device according to claim 1 wherein the tissue cutting or ablating apparatus comprises a light emitting apparatus which emits light energy to cut or ablate tissue.
14. A device according to claim 13 wherein the tissue cutting or ablating apparatus emits laser energy.
15. A device according to claim 13 wherein the tissue cutting or ablating apparatus emits light energy that causes thermal destruction of tissue.
16. A device according to claim 13 wherein the tissue cutting or ablating apparatus emits ultraviolet light.
17. A device according to claim 1 wherein the tissue cutting or ablating apparatus comprises an ultrasonic apparatus which uses ultrasound to cut or ablate tissue.
18. A device according to claim 1 wherein the tissue cutting or ablating apparatus comprises a mechanical tissue cutting apparatus.
19. A device according to claim 18 wherein the tissue cutting or ablating apparatus comprises at least one knife blade.
20. A device according to claim 19 wherein the tissue cutting or ablating apparatus comprises at least first and second knife blades located a spaced distance apart to cut a strip of tissue the width of which is substantially equal to the distance between the first and second knife blades.
21. A device according to claim 18 wherein the tissue cutting or ablating apparatus comprises at least one scissor.
22. A device according to claim 21 wherein the tissue cutting or ablating apparatus comprises at least first and second scissors located a spaced distance apart to cut a strip of tissue, the width of which is substantially equal to the distance between the first and second scissors.
23. A device according to claim 18 wherein the tissue cutting or ablating apparatus comprises at least one rotating cutter.
24. A device according to claim 1 wherein the device comprises:
an outer tube that has a lumen and a distal end; and
an inner tube that has a lumen and a distal portion, said inner tube extending through the lumen of the outer tube such that the distal portion of the inner tube extends out of and beyond the distal end of the outer tube;
wherein the protector is located on the portion of the inner tube that extends out of and beyond the distal end of the inner tube.
25. A device according to claim 24 wherein the outer diameter of the inner tube is smaller than the inner diameter of the outer tube such that fluid may flow through the lumen of the outer and wherein at least one aperture is formed in the outer tube to permit fluid to pass into or out of the lumen of the outer tube.
26. A device according to claim 24 wherein a power transmitting member extends through the lumen of the inner tube to deliver energy to the tissue ablating or cutting apparatus.
27. A device according to claim 26 wherein the power transmitting member is an electrically conductive member for delivering electrical energy to the tissue cutting or ablating apparatus.
28. A device according to claim 26 wherein the power transmitting member is a light guide for delivering light energy to the tissue cutting or ablating apparatus.
29. A device according to claim 26 wherein the power transmitting member is an ultrasound transmission member for delivering ultrasonic energy to the tissue cutting or ablating apparatus.
30. A device according to claim 26 wherein the power transmitting member is a mechanical drive member for driving the tissue cutting or ablating apparatus.
31. A device according to claim 26 wherein the power transmitting member is a rotatable drive shaft for rotatably driving the tissue cutting or ablating apparatus.
32. A device according to claim 1 wherein the tissue cutting or ablating apparatus emits energy which causes cutting or ablation of tissue and wherein the intensity and/or configuration of energy emitted by the tissue cutting or ablating apparatus is such that a strip of tissue of substantially predetermined width is cut or ablated.
33. A device according to claim 24 wherein the protector is formed by forming cuts in the distal portion of the inner tube and then bending at least a part of the distal portion of the inner tube to form said protector.
34. A device according to claim 33 wherein the protector is further formed by applying an insulating material to the part of the distal end of the inner tube that is bent to form the protector, thereby forming a protector having an insulating material disposed thereon.
35. A method for manufacturing a device useful for cutting or ablating tissue in a human or veterinary patient, the method comprising:
A) providing an outer tube and an inner tube;
B) positioning the inner tube within the outer tube such that a distal portion of the inner tube extends beyond a distal end of the outer tube;
C) forming a protector on the distal end of the outer tube by
a. cutting at least one notch in the distal end of the inner tube to form at least one leg, and
b. bending the first leg to form a protector having a first side and a second side, and
D) positioning an electrosurgical cutting or ablating apparatus at the distal portion of the inner tube and spaced apart from an adjacent the first side of the protector.
36. A method according to claim 35 wherein the step of positioning an electrosurgical cutting or ablating apparatus comprises forming an electrode member from a portion of the inner tube.
37. A method according to claim 36 wherein the step of forming an electrode includes forming a second leg in the distal portion of the inner tube.
38. A method according to claim 35 wherein the step of bending the first leg comprises the first leg radially inwardly.
39. A method according to claim 35 wherein the step of forming the protector further comprises applying an insulating coating on the first leg.
40. A method according to claim 36 wherein the step of forming an electrode comprises forming a first electrode from a portion of the inner tube and positioning an electrically conductive member including a second electrode spaced apart from and adjacent to the first electrode.
41. A method for cutting or ablating a strip of tissue from a tissue mass, said method comprising the steps of:
A) providing a device which comprises;
i. an elongate probe having a distal end;
ii. a tissue cutting or ablating apparatus; and
iii. a protector that extends from the probe, said protector having a first side and a second side, said protector being positionable such that tissue that is to be cut or ablated is adjacent to the first side of the protector and tissue that is to be protected is adjacent to the second side of the protector, said protector being at least partially formed of an insulating material;
wherein the tissue cutting or ablating apparatus is useable to cut or ablate tissue located adjacent to the first side of the protector without causing substantial damage to tissue located adjacent to the second side of the protector
B) positioning the device within or adjacent to the mass of tissue; and
C) advancing the device such that some of the in a first direction while using the tissue cutting or ablating apparatus to cut or ablate tissue that becomes positioned adjacent to the first side of the protector.
42. A method according to claim 41 wherein the mass of tissue is in vivo.
43. A method according to claim 41 wherein the mass of tissue is in vitro.
44. A method according to claim 1 wherein the mass of tissue is located within the body of a human or animal subject.
45. A method according to claim 44 wherein the strip of tissue is removed for a diagnostic or therapeutic purpose.
46. A method according to claim 45 wherein the subject suffers from glaucoma and wherein the method is carried out to remove a strip of trabecular meshwork from an eye of the subject to facilitate drainage of aqueous humor from the eye, thereby lowering intraocular pressure.
47. A method according to claim 46 wherein Steps B and C comprise:
inserting the device into the anterior chamber of the eye;
advancing the protector through the trabecular meshwork of the eye and into Schlemm's Canal;
advancing the device such that the protector moves through Schlemm's Canal and the cutting or ablation apparatus cuts or ablates trabecular meshwork tissue that becomes positioned adjacent to the first side of the protector.
48. A method according to claim 41 wherein the method is carried out to form an incision in skin, mucous membrane, an organ, a tumor or other anatomical structure.
49. A method according to claim 41 wherein the device provided in step A has at least one lumen formed therein and wherein the method further comprises the step of:
C) removing fluid or matter through a lumen of the device.
50. A method according to claim 49 wherein a lumen of the device is attached to a source of negative pressure to aspirate the tissue or matter through the lumen of the probe.
51. A method according to claim 41 wherein the device has at least two lumens and wherein the method further comprises:
infusing a fluid through one of the lumens; and
aspirating fluid and/or matter through the other of said lumens.
52. The device of claim 1 wherein the cutting or ablating apparatus comprises a plasma generating apparatus which utilizes properties of plasma to cut or ablate tissue.
53. The device of claim 1 wherein the cutting or ablating apparatus emits infrared light.
US10/560,266 2003-06-10 2004-06-10 Device and methods useable for treatment of glaucoma and other surgical procedures Abandoned US20060241580A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US47725803P true 2003-06-10 2003-06-10
PCT/US2004/018483 WO2004110260A2 (en) 2003-06-10 2004-06-10 Device and methods useable for treatment of glaucoma and other surgical procedures
US10/560,266 US20060241580A1 (en) 2003-06-10 2004-06-10 Device and methods useable for treatment of glaucoma and other surgical procedures

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/560,266 US20060241580A1 (en) 2003-06-10 2004-06-10 Device and methods useable for treatment of glaucoma and other surgical procedures
US14/923,302 US10123905B2 (en) 2003-06-10 2015-10-26 Devices useable for treatment of glaucoma and other surgical procedures

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/018483 A-371-Of-International WO2004110260A2 (en) 2003-06-10 2004-06-10 Device and methods useable for treatment of glaucoma and other surgical procedures

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US14/923,302 Division US10123905B2 (en) 2003-06-10 2015-10-26 Devices useable for treatment of glaucoma and other surgical procedures

Publications (1)

Publication Number Publication Date
US20060241580A1 true US20060241580A1 (en) 2006-10-26

Family

ID=33551697

Family Applications (2)

Application Number Title Priority Date Filing Date
US10/560,266 Abandoned US20060241580A1 (en) 2003-06-10 2004-06-10 Device and methods useable for treatment of glaucoma and other surgical procedures
US14/923,302 Active 2025-06-28 US10123905B2 (en) 2003-06-10 2015-10-26 Devices useable for treatment of glaucoma and other surgical procedures

Family Applications After (1)

Application Number Title Priority Date Filing Date
US14/923,302 Active 2025-06-28 US10123905B2 (en) 2003-06-10 2015-10-26 Devices useable for treatment of glaucoma and other surgical procedures

Country Status (7)

Country Link
US (2) US20060241580A1 (en)
EP (1) EP1633236B1 (en)
JP (1) JP4685786B2 (en)
CA (1) CA2528060C (en)
ES (1) ES2420684T3 (en)
MX (1) MXPA05013310A (en)
WO (1) WO2004110260A2 (en)

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070106236A1 (en) * 2003-11-14 2007-05-10 Coroneo Minas T Ocular Pressure Regulation
US20090018540A1 (en) * 2007-07-13 2009-01-15 Eitenmueller Juergen P Medical Instrument For Coagulation Of Tissue
US20090182421A1 (en) * 2007-07-17 2009-07-16 Tom Silvestrini Ocular implant with hydrogel expansion capabilities
US20090287233A1 (en) * 2008-05-15 2009-11-19 Huculak John C Small Gauge Mechanical Tissue Cutter/Aspirator Probe For Glaucoma Surgery
US20100010416A1 (en) * 2006-01-17 2010-01-14 Juan Jr Eugene De Glaucoma treatment device
US20100312252A1 (en) * 2009-06-03 2010-12-09 Guangyao Jia Capsularhexis device with flexible heating element having an angled transitional neck
US8137344B2 (en) 2008-12-10 2012-03-20 Alcon Research, Ltd. Flexible, automated capsulorhexis device
US8157797B2 (en) 2009-01-12 2012-04-17 Alcon Research, Ltd. Capsularhexis device with retractable bipolar electrodes
US8167939B2 (en) 2009-01-28 2012-05-01 Transcend Medical, Inc. Ocular implant with stiffness qualities, methods of implantation and system
US8529492B2 (en) 2009-12-23 2013-09-10 Trascend Medical, Inc. Drug delivery devices and methods
WO2013163034A1 (en) * 2012-04-24 2013-10-31 The Regents Of The University Of Colorado, A Body Corporate Modified dual-blade cutting system
USD707818S1 (en) 2013-03-05 2014-06-24 Alcon Research Ltd. Capsulorhexis handpiece
US20140194916A1 (en) * 2011-09-06 2014-07-10 Chukyo Medical Co., Inc. Surgical instrument
US8814854B2 (en) 2009-06-03 2014-08-26 Alcon Research, Ltd. Capsulotomy repair device and method for capsulotomy repair
US20140379015A1 (en) * 2003-06-10 2014-12-25 Neomedix Corporation Tubular cutter device and methods for cutting and removing strips of tissue from the body of a patient
US20150127037A1 (en) * 2012-06-14 2015-05-07 Sanoculis Ltd. Medical device, assembly and method for creating a channel in soft tissue
US9084662B2 (en) 2006-01-17 2015-07-21 Transcend Medical, Inc. Drug delivery treatment device
USD737438S1 (en) 2014-03-04 2015-08-25 Novartis Ag Capsulorhexis handpiece
US9125720B2 (en) 2008-10-13 2015-09-08 Alcon Research, Ltd. Capsularhexis device with flexible heating element
US9149388B2 (en) 2010-09-29 2015-10-06 Alcon Research, Ltd. Attenuated RF power for automated capsulorhexis
US9155656B2 (en) 2012-04-24 2015-10-13 Transcend Medical, Inc. Delivery system for ocular implant
US9241755B2 (en) 2010-05-11 2016-01-26 Alcon Research, Ltd. Capsule polishing device and method for capsule polishing
EP3021768A1 (en) * 2013-07-19 2016-05-25 Ouroboros Medical, Inc. An anti-clogging device for a vacuum-assisted, tissue removal system
US9480598B2 (en) 2012-09-17 2016-11-01 Novartis Ag Expanding ocular implant devices and methods
US9498278B2 (en) 2010-09-08 2016-11-22 Covidien Lp Asymmetrical electrodes for bipolar vessel sealing
US9554940B2 (en) 2012-03-26 2017-01-31 Glaukos Corporation System and method for delivering multiple ocular implants
US9572963B2 (en) 2001-04-07 2017-02-21 Glaukos Corporation Ocular disorder treatment methods and systems
US9592151B2 (en) 2013-03-15 2017-03-14 Glaukos Corporation Systems and methods for delivering an ocular implant to the suprachoroidal space within an eye
WO2017112893A1 (en) * 2015-12-23 2017-06-29 The Regents Of The University Of Colorado, A Body Corporate An ophthalmic knife and methods of use
US9757279B2 (en) 2012-04-24 2017-09-12 The Regents Of The University Of Colorado, A Body Corporate Intraocular device for dual incisions
US9763829B2 (en) 2012-11-14 2017-09-19 Novartis Ag Flow promoting ocular implant
US9855167B2 (en) 2012-03-20 2018-01-02 Sight Sciences, Inc. Ocular delivery systems and methods
US9962290B2 (en) 2006-11-10 2018-05-08 Glaukos Corporation Uveoscleral shunt and methods for implanting same
US9987163B2 (en) 2013-04-16 2018-06-05 Novartis Ag Device for dispensing intraocular substances
US9993368B2 (en) 2000-04-14 2018-06-12 Glaukos Corporation System and method for treating an ocular disorder
US10085633B2 (en) 2012-04-19 2018-10-02 Novartis Ag Direct visualization system for glaucoma treatment
US10123905B2 (en) 2003-06-10 2018-11-13 Neomedix Devices useable for treatment of glaucoma and other surgical procedures
USD846738S1 (en) 2017-10-27 2019-04-23 Glaukos Corporation Implant delivery apparatus

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5723035B2 (en) 2011-12-03 2015-05-27 ウロボロス メディカル,インコーポレイテッドOuroboros Medical,Inc. Secure the cutting head and cutting systems for rapid ablation of the target tissue
JP5458205B1 (en) * 2013-06-28 2014-04-02 株式会社中京メディカル Surgical instruments
US9895160B2 (en) 2014-04-16 2018-02-20 Gyrus Acmi Inc. Surgical operating apparatus with temperature control

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3294085A (en) * 1963-09-27 1966-12-27 American Cystoscope Makers Inc Endoscope
US3572891A (en) * 1966-09-30 1971-03-30 Amp Inc Termination member for fiber optic members
US4694828A (en) * 1986-04-21 1987-09-22 Eichenbaum Daniel M Laser system for intraocular tissue removal
US5257988A (en) * 1991-07-19 1993-11-02 L'esperance Medical Technologies, Inc. Apparatus for phacoemulsifying cataractous-lens tissue within a protected environment
US5431646A (en) * 1990-05-16 1995-07-11 Sunrise Technologies Optical fiber probe and laser sclerostomy procedure
US5957914A (en) * 1990-06-19 1999-09-28 Surgical Laser Technologies, Inc. Photo optic breakdown probe
US20020111608A1 (en) * 2001-01-18 2002-08-15 George Baerveldt Minimally invasive glaucoma surgical instrument and method

Family Cites Families (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882872A (en) 1970-01-05 1975-05-13 Nicholas G Douvas Method and apparatus for cataract surgery
US3776238A (en) 1971-08-24 1973-12-04 Univ California Ophthalmic instrument
US4011869A (en) 1975-08-01 1977-03-15 David Kopf Instruments Tubular cutting instrument
US4111207A (en) 1976-10-28 1978-09-05 David Kopf Instruments Notched tubular cutting instrument
US4428748A (en) 1980-04-09 1984-01-31 Peyman Gholam A Combined ultrasonic emulsifier and mechanical cutter for surgery
NO147900C (en) 1981-03-12 1983-07-06 Finn Skjaerpe Micro Surgical.
US4577629A (en) 1983-10-28 1986-03-25 Coopervision, Inc. Surgical cutting instrument for ophthalmic surgery
US4559942A (en) 1984-02-29 1985-12-24 William Eisenberg Method utilizing a laser for eye surgery
US4649919A (en) * 1985-01-23 1987-03-17 Precision Surgical Instruments, Inc. Surgical instrument
US4846172A (en) 1987-05-26 1989-07-11 Berlin Michael S Laser-delivery eye-treatment method
US4900300A (en) 1987-07-06 1990-02-13 Lee David A Surgical instrument
JP2832998B2 (en) 1989-04-27 1998-12-09 日本電気株式会社 Nonvolatile mos semiconductor memory device
US5163433A (en) 1989-11-01 1992-11-17 Olympus Optical Co., Ltd. Ultrasound type treatment apparatus
US5222959A (en) 1990-07-17 1993-06-29 Anis Aziz Y Removal of tissue
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
AT168260T (en) 1993-05-07 1998-08-15 Grieshaber & Co Ag to break, crush Ophthalmological surgical device and remove the lens nucleus from the eye of a living creature
US5431671A (en) 1993-05-28 1995-07-11 Nallakrishnan; Ravi Surgical knife with retractable and angularly adjustable blade
US6213997B1 (en) 1993-08-23 2001-04-10 Refractec, Inc. Apparatus for modifications of visual acuity by thermal means
US5569283A (en) 1993-09-03 1996-10-29 United States Surgical Corporation Surgical cutting instrument with guarded blade
US5478338A (en) 1993-09-24 1995-12-26 Reynard; Michael Fiber optic sleeve for surgical instruments
FI934513A (en) 1993-10-13 1995-04-14 Leiras Oy An apparatus of injection of the implant Foer
US5817115A (en) 1995-12-04 1998-10-06 Chiron Vision Corporation Apparatus for resecting corneal tissue
US5865831A (en) 1996-04-17 1999-02-02 Premier Laser Systems, Inc. Laser surgical procedures for treatment of glaucoma
US5755716A (en) * 1996-08-30 1998-05-26 Garito; Jon C. Method for using an electrosurgical electrode for treating glaucoma
AT327287T (en) 1998-02-23 2006-06-15 Mnemoscience Gmbh Shape memory polymer
US6264668B1 (en) 1998-09-16 2001-07-24 Arnold S. Prywes Ophthalmologic instrument for producing a fistula in the sclera
US6241721B1 (en) 1998-10-09 2001-06-05 Colette Cozean Laser surgical procedures for treatment of glaucoma
US6013049A (en) 1998-10-29 2000-01-11 Allergan Sales, Inc. Controlled outflow sleeve
AU776599B2 (en) * 1999-11-24 2004-09-16 Grieshaber & Co. Ag Device for improving the aqueous humour outflow in the eye of a living thing
US7604663B1 (en) 1999-12-30 2009-10-20 St. Jude Medical, Inc. Medical devices with polymer/inorganic substrate composites
US6497712B1 (en) 2000-02-14 2002-12-24 Fred T. Feaster Keratotomy surgery knife
US6638239B1 (en) 2000-04-14 2003-10-28 Glaukos Corporation Apparatus and method for treating glaucoma
US7632303B1 (en) 2000-06-07 2009-12-15 Advanced Cardiovascular Systems, Inc. Variable stiffness medical devices
JP4269300B2 (en) 2000-08-30 2009-05-27 マニー株式会社 Ophthalmic knife
US6428501B1 (en) 2000-09-19 2002-08-06 K2 Limited Partnership U/A/D Surgical instrument sleeve
CA2435809A1 (en) 2001-01-24 2002-08-01 Johnson & Johnson Vision Care, Inc. Shape memory styrene copolymer
WO2003045290A1 (en) 2001-11-21 2003-06-05 Iscience Corporation Ophthalmic microsurgical system
US7041114B2 (en) 2002-05-01 2006-05-09 D.O.T. Dan Ophthalmic Technologies Ltd. Surgical tool and method for extracting tissue from wall of an organ
US7374566B1 (en) 2002-10-10 2008-05-20 Schossau Tom M Surgical knives for large, self-sealing corneal incisions coupled to a universal intraocular lens (IOL) injector
AT439107T (en) 2003-04-16 2009-08-15 Iscience Interventional Corp Microsurgical instruments for ophthalmology
CA2528280C (en) 2003-06-10 2012-12-11 Neomedix Corporation Tubular cutter device for cutting and removing strips of tissue from the body of a patient
US20060241580A1 (en) 2003-06-10 2006-10-26 Neomedix Corporation Device and methods useable for treatment of glaucoma and other surgical procedures
US20040267349A1 (en) 2003-06-27 2004-12-30 Kobi Richter Amorphous metal alloy medical devices
US7488444B2 (en) 2005-03-03 2009-02-10 Icon Medical Corp. Metal alloys for medical devices
WO2007115208A2 (en) 2006-03-30 2007-10-11 The Regents Of The University Of Colorado Shape memory polymer medical devices
US7935131B2 (en) 2006-10-25 2011-05-03 University Of Rochester Shape memory polymers
US20090287233A1 (en) 2008-05-15 2009-11-19 Huculak John C Small Gauge Mechanical Tissue Cutter/Aspirator Probe For Glaucoma Surgery
US8038923B2 (en) 2009-01-20 2011-10-18 GM Global Technology Operations LLC Methods of forming a part using shape memory polymers
EP2475342A1 (en) 2009-09-10 2012-07-18 E-Medix Limited Surgical knife handle and knife
US20110230877A1 (en) 2010-03-16 2011-09-22 Alcon Research, Ltd. Pulsed Electric Field Probe for Glaucoma Surgery
AU2011308629A1 (en) 2010-09-30 2013-05-23 Evonik Corporation Drug delivery blade and methods for delivering a drug depot to a target site
JP6054514B2 (en) 2012-04-24 2016-12-27 ザ リージェンツ オブ ザ ユニバーシティ オブ コロラド,ア ボディー コーポレイトTHE REGENTS OF THE UNIVERSITY OF COLORADO,a body corporate Modified double blade cutting system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3294085A (en) * 1963-09-27 1966-12-27 American Cystoscope Makers Inc Endoscope
US3572891A (en) * 1966-09-30 1971-03-30 Amp Inc Termination member for fiber optic members
US4694828A (en) * 1986-04-21 1987-09-22 Eichenbaum Daniel M Laser system for intraocular tissue removal
US5431646A (en) * 1990-05-16 1995-07-11 Sunrise Technologies Optical fiber probe and laser sclerostomy procedure
US5957914A (en) * 1990-06-19 1999-09-28 Surgical Laser Technologies, Inc. Photo optic breakdown probe
US5257988A (en) * 1991-07-19 1993-11-02 L'esperance Medical Technologies, Inc. Apparatus for phacoemulsifying cataractous-lens tissue within a protected environment
US20020111608A1 (en) * 2001-01-18 2002-08-15 George Baerveldt Minimally invasive glaucoma surgical instrument and method

Cited By (83)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9993368B2 (en) 2000-04-14 2018-06-12 Glaukos Corporation System and method for treating an ocular disorder
US9987472B2 (en) 2001-04-07 2018-06-05 Glaukos Corporation Ocular implant delivery systems
US9572963B2 (en) 2001-04-07 2017-02-21 Glaukos Corporation Ocular disorder treatment methods and systems
US20160220418A1 (en) * 2003-06-10 2016-08-04 Neomedix Corporation Dual blade ophthalmologic surgery device
US9820885B2 (en) * 2003-06-10 2017-11-21 Neomedix Corporation Dual blade ophthalmologic surgery device
US10123905B2 (en) 2003-06-10 2018-11-13 Neomedix Devices useable for treatment of glaucoma and other surgical procedures
US9358155B2 (en) * 2003-06-10 2016-06-07 Neomedix Corporation Dual blade ophthalmologic surgery device
US20140379015A1 (en) * 2003-06-10 2014-12-25 Neomedix Corporation Tubular cutter device and methods for cutting and removing strips of tissue from the body of a patient
US20150297400A1 (en) * 2003-06-10 2015-10-22 Neomedix Corporation Dual blade ophthalmologic surgery device
US9107729B2 (en) * 2003-06-10 2015-08-18 Neomedix Corporation Methods for forming an opening in the trabecular meshwork of the eye of a patient
US8128588B2 (en) 2003-11-14 2012-03-06 Transcend Medical, Inc. Ocular pressure regulation
US8808220B2 (en) 2003-11-14 2014-08-19 Transcend Medical, Inc. Ocular pressure regulation
US8771218B2 (en) 2003-11-14 2014-07-08 Transcend Medical, Inc. Ocular pressure regulation
US20070106236A1 (en) * 2003-11-14 2007-05-10 Coroneo Minas T Ocular Pressure Regulation
US8758289B2 (en) 2003-11-14 2014-06-24 Transcend Medical, Inc. Ocular pressure regulation
US20110087150A1 (en) * 2003-11-14 2011-04-14 Minas Theodore Coroneo Ocular pressure regulation
US8486000B2 (en) 2003-11-14 2013-07-16 Transcend Medical, Inc. Ocular pressure regulation
US10226380B2 (en) 2003-11-14 2019-03-12 Novartis Ag Ocular pressure regulation
US8728021B2 (en) 2003-11-14 2014-05-20 Transcend Medical, Inc. Ocular pressure regulation
US9351873B2 (en) 2003-11-14 2016-05-31 Transcend Medical, Inc. Ocular pressure regulation
US8814819B2 (en) 2006-01-17 2014-08-26 Transcend Medical, Inc. Glaucoma treatment device
US8721656B2 (en) 2006-01-17 2014-05-13 Transcend Medical, Inc. Glaucoma treatment device
US9398977B2 (en) 2006-01-17 2016-07-26 Transcend Medical, Inc. Glaucoma treatment device
US9421130B2 (en) 2006-01-17 2016-08-23 Novartis Ag. Glaucoma treatment device
US9668917B2 (en) 2006-01-17 2017-06-06 Novartis Ag Drug delivery treatment device
US9789000B2 (en) 2006-01-17 2017-10-17 Novartis Ag Glaucoma treatment device
US9084662B2 (en) 2006-01-17 2015-07-21 Transcend Medical, Inc. Drug delivery treatment device
US20100010416A1 (en) * 2006-01-17 2010-01-14 Juan Jr Eugene De Glaucoma treatment device
US8801649B2 (en) 2006-01-17 2014-08-12 Transcend Medical, Inc. Glaucoma treatment device
US20110098629A1 (en) * 2006-01-17 2011-04-28 Juan Jr Eugene De Glaucoma treatment device
US8734378B2 (en) * 2006-01-17 2014-05-27 Transcend Medical, Inc. Glaucoma treatment device
US9962290B2 (en) 2006-11-10 2018-05-08 Glaukos Corporation Uveoscleral shunt and methods for implanting same
US8109929B2 (en) * 2007-07-13 2012-02-07 Karl Storz Gmbh & Co. Kg Medical instrument for coagulation of tissue
US20090018540A1 (en) * 2007-07-13 2009-01-15 Eitenmueller Juergen P Medical Instrument For Coagulation Of Tissue
US8672870B2 (en) 2007-07-17 2014-03-18 Transcend Medical, Inc. Ocular implant with hydrogel expansion capabilities
US20090182421A1 (en) * 2007-07-17 2009-07-16 Tom Silvestrini Ocular implant with hydrogel expansion capabilities
US9585789B2 (en) 2007-07-17 2017-03-07 Novartis Ag Ocular implant with hydrogel expansion capabilities
US20090287233A1 (en) * 2008-05-15 2009-11-19 Huculak John C Small Gauge Mechanical Tissue Cutter/Aspirator Probe For Glaucoma Surgery
US9125720B2 (en) 2008-10-13 2015-09-08 Alcon Research, Ltd. Capsularhexis device with flexible heating element
US8137344B2 (en) 2008-12-10 2012-03-20 Alcon Research, Ltd. Flexible, automated capsulorhexis device
US8157797B2 (en) 2009-01-12 2012-04-17 Alcon Research, Ltd. Capsularhexis device with retractable bipolar electrodes
US8172899B2 (en) 2009-01-28 2012-05-08 Transcend Medical, Inc. Ocular implant with stiffness qualities, methods of implantation and system
US8167939B2 (en) 2009-01-28 2012-05-01 Transcend Medical, Inc. Ocular implant with stiffness qualities, methods of implantation and system
US8377122B2 (en) 2009-01-28 2013-02-19 Transcend Medical, Inc. Ocular implant with stiffness qualities, methods of implantation and system
US8574294B2 (en) 2009-01-28 2013-11-05 Transcend Medical, Inc. Ocular implant with stiffness qualities, methods of implantation and system
US8262726B2 (en) 2009-01-28 2012-09-11 Transcend Medical, Inc. Ocular implant with stiffness qualities, methods of implantation and system
US9763828B2 (en) 2009-01-28 2017-09-19 Novartis Ag Ocular implant with stiffness qualities, methods of implantation and system
US20100312252A1 (en) * 2009-06-03 2010-12-09 Guangyao Jia Capsularhexis device with flexible heating element having an angled transitional neck
US8814854B2 (en) 2009-06-03 2014-08-26 Alcon Research, Ltd. Capsulotomy repair device and method for capsulotomy repair
US9089392B2 (en) 2009-12-23 2015-07-28 Transcend Medical, Inc. Drug delivery devices and methods
US8529492B2 (en) 2009-12-23 2013-09-10 Trascend Medical, Inc. Drug delivery devices and methods
US9549846B2 (en) 2009-12-23 2017-01-24 Novartis Ag Drug delivery devices and methods
US9241755B2 (en) 2010-05-11 2016-01-26 Alcon Research, Ltd. Capsule polishing device and method for capsule polishing
US9498278B2 (en) 2010-09-08 2016-11-22 Covidien Lp Asymmetrical electrodes for bipolar vessel sealing
US9814518B2 (en) 2010-09-08 2017-11-14 Covidien Lp Asymmetrical electrodes for bipolar vessel sealing
US9149388B2 (en) 2010-09-29 2015-10-06 Alcon Research, Ltd. Attenuated RF power for automated capsulorhexis
US9351872B2 (en) 2010-09-29 2016-05-31 Alcon Research, Ltd. Attenuated RF power for automated capsulorhexis
US20140194916A1 (en) * 2011-09-06 2014-07-10 Chukyo Medical Co., Inc. Surgical instrument
US9855167B2 (en) 2012-03-20 2018-01-02 Sight Sciences, Inc. Ocular delivery systems and methods
US10179066B2 (en) 2012-03-20 2019-01-15 Sight Sciences, Inc. Ocular delivery systems and methods
US9895258B2 (en) 2012-03-20 2018-02-20 Sight Sciences, Inc. Ocular delivery systems and methods
US9554940B2 (en) 2012-03-26 2017-01-31 Glaukos Corporation System and method for delivering multiple ocular implants
US10085633B2 (en) 2012-04-19 2018-10-02 Novartis Ag Direct visualization system for glaucoma treatment
US9872799B2 (en) 2012-04-24 2018-01-23 The Regents Of The University Of Colorado, A Body Corporate Intraocular device for dual incisions
US9241832B2 (en) 2012-04-24 2016-01-26 Transcend Medical, Inc. Delivery system for ocular implant
WO2013163034A1 (en) * 2012-04-24 2013-10-31 The Regents Of The University Of Colorado, A Body Corporate Modified dual-blade cutting system
US9757279B2 (en) 2012-04-24 2017-09-12 The Regents Of The University Of Colorado, A Body Corporate Intraocular device for dual incisions
US9907697B2 (en) 2012-04-24 2018-03-06 Novartis Ag Delivery system for ocular implant
US9155656B2 (en) 2012-04-24 2015-10-13 Transcend Medical, Inc. Delivery system for ocular implant
US20150127037A1 (en) * 2012-06-14 2015-05-07 Sanoculis Ltd. Medical device, assembly and method for creating a channel in soft tissue
US9480598B2 (en) 2012-09-17 2016-11-01 Novartis Ag Expanding ocular implant devices and methods
US9763829B2 (en) 2012-11-14 2017-09-19 Novartis Ag Flow promoting ocular implant
USD707818S1 (en) 2013-03-05 2014-06-24 Alcon Research Ltd. Capsulorhexis handpiece
US9592151B2 (en) 2013-03-15 2017-03-14 Glaukos Corporation Systems and methods for delivering an ocular implant to the suprachoroidal space within an eye
US10188551B2 (en) 2013-03-15 2019-01-29 Glaukos Corporation Systems and methods for delivering an ocular implant to the suprachoroidal space within an eye
US9987163B2 (en) 2013-04-16 2018-06-05 Novartis Ag Device for dispensing intraocular substances
EP3021768A1 (en) * 2013-07-19 2016-05-25 Ouroboros Medical, Inc. An anti-clogging device for a vacuum-assisted, tissue removal system
EP3021768A4 (en) * 2013-07-19 2017-03-29 Ouroboros Medical, Inc. An anti-clogging device for a vacuum-assisted, tissue removal system
USD737438S1 (en) 2014-03-04 2015-08-25 Novartis Ag Capsulorhexis handpiece
US10271989B2 (en) 2015-10-30 2019-04-30 Glaukos Corporation System and method for delivering multiple ocular implants
US10213342B2 (en) 2015-12-23 2019-02-26 The Regents Of The University Of Colorado, A Body Corporate Ophthalmic knife and methods of use
WO2017112893A1 (en) * 2015-12-23 2017-06-29 The Regents Of The University Of Colorado, A Body Corporate An ophthalmic knife and methods of use
USD846738S1 (en) 2017-10-27 2019-04-23 Glaukos Corporation Implant delivery apparatus

Also Published As

Publication number Publication date
WO2004110260A3 (en) 2009-04-16
CA2528060C (en) 2012-12-11
ES2420684T3 (en) 2013-08-26
EP1633236A4 (en) 2009-12-30
CA2528060A1 (en) 2004-12-23
US20160106589A1 (en) 2016-04-21
WO2004110260A2 (en) 2004-12-23
US10123905B2 (en) 2018-11-13
JP2007524472A (en) 2007-08-30
MXPA05013310A (en) 2006-05-19
JP4685786B2 (en) 2011-05-18
EP1633236A2 (en) 2006-03-15
EP1633236B1 (en) 2013-04-10

Similar Documents

Publication Publication Date Title
US9597230B2 (en) Devices and methods for glaucoma treatment
JP3985019B2 (en) Glaucoma treatment apparatus and method
US7052494B2 (en) Surgical system and method
JP2574793B2 (en) Needle probe for removing tissue
US8052672B2 (en) Fat removal and nerve protection device and method
US6066138A (en) Medical instrument and method of utilizing same for eye capsulotomy
US4122853A (en) Infrared laser photocautery device
AU716239B2 (en) Liquefaction handpiece
US5085658A (en) Neurosurgical pathological tissue removing device
US5180362A (en) Gonio seton
CN102026600B (en) Ophthalmic surgical device for capsulotomy
US7488303B1 (en) Ocular implant with anchor and multiple openings
US20090043321A1 (en) Apparatus And Method For Surgical Enhancement Of Aqueous Humor Drainage
US6251103B1 (en) Photoablative laser eye-treatment method
US5112328A (en) Method and apparatus for laser surgery
US20130245532A1 (en) Ocular implant system
US20100191103A1 (en) Apparatus and method for surgical bypass of aqueous humor
US6918903B2 (en) Device for suction-assisted lipectomy and method of using same
US4900300A (en) Surgical instrument
US4963142A (en) Apparatus for endolaser microsurgery
US6395002B1 (en) Electrosurgical instrument for ear surgery
US5487725A (en) Pneumatic vitrectomy for retinal attachment
US5571101A (en) Electrosurgical electrode for DCR surgical procedure
US5674226A (en) Method and apparatus for tissue excision and removal by fluid jet
US6139560A (en) Cutting device and method for making controlled surgical incisions

Legal Events

Date Code Title Description
AS Assignment

Owner name: NEOMEDIX CORPORATION, CALIFORNIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MITTELSTEIN, MICHAEL;SORENSEN, JOHN T.;MIRHASHEMI, SOHEILA;AND OTHERS;REEL/FRAME:017604/0630;SIGNING DATES FROM 20060508 TO 20060510