US3693613A - Surgical handpiece and flow control system for use therewith - Google Patents

Surgical handpiece and flow control system for use therewith Download PDF

Info

Publication number
US3693613A
US3693613A US3693613DA US3693613A US 3693613 A US3693613 A US 3693613A US 3693613D A US3693613D A US 3693613DA US 3693613 A US3693613 A US 3693613A
Authority
US
United States
Prior art keywords
flow
source
operative site
negative pressure
treatment fluid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Inventor
Charles Kelman
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.)
Cooper Cos Inc
Original Assignee
Cavitron 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 US9647370A priority Critical
Application filed by Cavitron Corp filed Critical Cavitron Corp
Application granted granted Critical
Publication of US3693613A publication Critical patent/US3693613A/en
Assigned to COOPERVISION, INC., A CORP OF DE reassignment COOPERVISION, INC., A CORP OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: NORTIVAC, INC.
Assigned to NORTIVAC, INC. reassignment NORTIVAC, INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE JULY 29, 1983 Assignors: CAVITRON CORPORATION
Assigned to AIG CAPITAL CORP. reassignment AIG CAPITAL CORP. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: COOPER COMPANIES, INC.
Assigned to IRVING TRUST CO., NEW YORK BANKING CORP. reassignment IRVING TRUST CO., NEW YORK BANKING CORP. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: COOPER COMPANIES, INC., THE
Assigned to UNION BANK reassignment UNION BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: COOPER COMPANIES, INC., THE, A DE. CORP.
Assigned to COOPER COMPANIES, INC., THE reassignment COOPER COMPANIES, INC., THE CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: COOPERVISION, INC.
Assigned to COOPER COMPANIES, INC., THE reassignment COOPER COMPANIES, INC., THE LICENSE (SEE DOCUMENT FOR DETAILS). Assignors: DAIWA BANK, LIMITED, LOS ANGELES AGENCY, THE
Assigned to DAIWA BANK, LIMITED, LOS ANGELES AGENCY, THE, A BANK OF JAPAN reassignment DAIWA BANK, LIMITED, LOS ANGELES AGENCY, THE, A BANK OF JAPAN SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: COOPER COMPANIES, INC., THE
Assigned to UNION BANK, AS COLLATERAL AGENT reassignment UNION BANK, AS COLLATERAL AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: COOPER COMPANIES, INC., THE
Assigned to COOPER COMPANIES, INC., THE reassignment COOPER COMPANIES, INC., THE RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: IRVING TRUST COMPANY
Assigned to UNION BANK reassignment UNION BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: COOPER COMPANIES, INC., THE, A CORP. OF DE
Assigned to COOPER COMPANIES, INC., THE reassignment COOPER COMPANIES, INC., THE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AIG CAPITAL CORP.
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime 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
    • A61F9/00736Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments
    • A61F9/00745Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments using mechanical vibrations, e.g. ultrasonic
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00973Surgical instruments, devices or methods, e.g. tourniquets pedal-operated
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32Surgical cutting instruments
    • A61B17/320068Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B2017/320084Irrigation sleeves
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/008Drainage tubes; Aspiration tips
    • A61M1/0084With gas or fluid supply means, e.g. for supplying rinsing fluids, anticoagulants
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/2496Self-proportioning or correlating systems
    • Y10T137/2559Self-controlled branched flow systems
    • Y10T137/2574Bypass or relief controlled by main line fluid condition
    • Y10T137/2579Flow rate responsive

Abstract

A flow control system is used in conjunction with a surgical handpiece for the removal of unwanted material in a very small enclosed operative site in which it is very critical to maintain a pressure within a certain range, such as in the surgical operation of the removal of a cataract lens from the human eye. The system includes an irrigation subsystem comprising a source of treatment fluid, such as an artificial aqueous solution, at a preselected constant pressure for supplying said fluid to the enclosed operative site via the handpiece. A suspension of the treatment fluid, including any unwanted material, is removed from the operative site by an aspiration subsystem. The aspiration subsystem comprises a pump used to remove the suspension and to overcome the friction and other losses throughout the entire fluid system, a flow transducer for measuring the rate of flow, and a vent valve to reduce the flow in the aspiration subsystem when necessary to assist in maintaining a relatively constant pressure within the operative site. An electronic flow control receives signals from the flow transducer and reacts to certain changes in flow signals by sending a signal to the venting valve.

Description

HU 333 EA OR 3 a 6 9 3 a 6 1 3 I United States Patent [1 1 3,693,613

Kelman [4 1 Sept. 26, 1972 SURGICAL HANDPIECE AND FLOW [57] ABSTRACT gggggg g FOR USE A flow control system is used in conjunction with a surgical handpiece for the removal of unwanted [72] inventor: Charles Kelman, New York, N.Y. material in a very small enclosed operative site in which it is very critical to maintain a pressure within a [73] Asslgnee' ga g Corporation Long Island certain range, such as in the surgical operation of the removal of a cataract lens from the human eye. The [22] Filed: Dec. 9, 1970 system includes an irrigation subsystem comprising a [21 AppL No; 96,473 source of treatment fluid, such as an artificial aqueous solution, at a preselected constant pressure for supplying said fluid to the enclosed operative site via the U-S. Cl A, handpiece. A suspension of the treatment fluid in- 417/30O eluding any unwanted material, is removed from the A615 17/00, 5 11/02 operative site by an aspiration subsystem. The aspira- [58] Field of Search ..l28/24 A, 278, 303, 303.1; on subsystem comprises a pump used to remove the 137/117i417/300 suspension and to overcome the friction and other losses throughout the entire fluid system, a flow trans- [56] Ree'ences cued ducer for measuring the rate of flow, and a vent valve UNITED STATES PATENTS to reduce the flow in the aspiration subsystem when necessary to assist in maintaining a relatively constant 2,355,945 10/1958 Gratlmllllel UX pressure within the operative site. An electronic flow 3,526,219 9/ 1970 Balamuth ..l28/24 A control receives signals from the flow transducer and 3,528,410 9/1970 Banko ..l28/24 A reacts t ertain changes in flow signals by sending a "OCH X signal to the venting va]ve 3,581,760 6/197] West ..l37/l 17 X 3,589,363 6/1971 Banko ..l28/24 A X Primary Examiner-Channing L. Pace Attorney-Philip Sperber 9 Claims, 4 Drawing Figures POWER AND I COOLANT '1 SJPPLY I 1617 H 1 7 I o FICJ I HANDPYECE 55 l 2s 24 I 'TTREZTMENT t J 50 56 FLUID suPPLY,-"-/

P2 I I TREATMEN l FLUID sup Pl l ELECTRONIC FLOW CONTROL *F l l l L 'l J i l l I I i l I l l I l I L l i I \ZO MASTER CONTROL PANEL r 11s A.C.

PMENTEDszrzs I972 sum 1 or 2 l'lllllllllllr El llllllllll f! '4 mm mm M O ll I INVENTOR. Charles Kelman 4 ATTORNY SURGICAL HANDPIECE AND FLOW CONTROL SYSTEM FOR USE THEREWITH BACKGROUND OF THE INVENTION The present invention relates to a flow control system to be used with surgical handpiece, the combination of which is primarily concerned with the removal of tissue from any enclosed or semi-enclosed operative site. This flow control system is particularly of interest and value where it is important that the pressure in the operative site be maintained within relative ly narrow limits and particularly where the total volume of the operative site chamber is very small in relation to the rest of the fluid in the system. Although by no means limited thereto, the present system is of particular advantage when used with an ultrasonic handpiece for the removal of a cataract lens in the human eye.

The usual procedure in e o o taract lens from a human eye often involves a 180 incision allow the surgeon to lift up the cornea and lift out the lens in toto. The flow control system of this invention makes it possible to remove a cataract lens from a human eye by making only a small incision in the eye and inserting the tip of the surgical handpiece therein so that the tip is within the anterior chamber (operative site) of the eye providing access to the lens.

One type of handpiece, (hereinafter to be referred to as the ultrasonic handpiece), includes a source of vibratory motion as well as a passage for treatment fluid to flow into the anterior chamber (operative site) and a passage for the fluid and unwanted material (hereinafter to be referred to as the suspension), to exit from the anterior chamber (operative site). The combined or separate action of the flowing fluid and/or the force of the vibratory motion of the handpiece when in contact with or adjacent to the lens of the eye will cause the lens to break apart and be removed from the eye. One example of such a handpiece is disclosed in the copending application of A. Banko and C. Kelman, Ser. No. 655,790 filed July 25, 1967 entitled Material Removal Apparatus Employing High Frequency-vibration", now U.S. Pat. No. 3 2,3 dated June 29, 1971 and assigned to'the assignee of t is application. Discussion throughout this specification of maintaining a relatively constant pressure is intended to refer only to the pressure caused by the treatment fluid and not to any effect of the acoustic pressure waves caused by the ultrasonic vibrations. The latter effects can be neglected with respect to the flow parameters of interest to the invention disclosed herein.

Another type of handpiece, (hereinafter to be referred to as the irrigation-aspiration handpiece), merely contains two passages for flow into and out of the operative site. lt is usually used during a type of cleaning up" procedure within the enclosed operative site, though may be used as an alternative to the ultrasonic handpiece where the unwanted material is particularly soft and does not require the use of ultrasonics to break it apart.

When the handpiece is inserted into the eye or operative site, and in the case of the eye, the anterior chamber, it is very important that the pressure of the' anterior chamber is maintained within a certain range of values, since otherwise various portions of the eye could be damaged. A collapse of the anterior chamber could result in either the iris, the endothelium layer of the cornea, or the posterior capsule, as well as other parts coming into contact with that portion of the handpiece within the eye which is connected to a source of fluid suction as well as a source of high frequency vibration, either of which could cause damage to one or more of the above-named parts of the eye. This problem of maintaining the proper pressure is a particularly difficult and sensitive one in the case of an operative site wherein the volume of said operative site considerably smaller than the volume of fluid which is necessary for the irrigating and aspirating subsystems connected to the handpiece for maintaining the necessary flow to and from the operative site. In addition, as in the case of a cataract operation, when the lens or portions thereof are drawn towards the surgical handpiece tip within the operative site, there is a possibility of particles which are bigger than the exit passage from the operative site to occlude the fluid line in the tip portion of the handpiece leading to the aspiration subsystem. When this occlusion occurs, there is an increased negative pressure or suction in the fluid line between the operative site and the pump which is assisting in the aspirating of the fluid out of the operative site. When the occlusion is finally removed, whether it be by the mechanical action of the ultrasonic tip or by an increase in the value of the aspirating force at the tip of the handpiece or due to any other reason, the flow control system is designed so there is an extremely rapid equalization of the pressure in the entire system. If there were no such equalization of the pressure, then due to this increased negative pressure or suction in the aspiration line, there would be a tendency for all of the fluid volume of the operative site to be suddenly conducted through the handpiece towards the pump once the occlusion is removed. This is especially true where the volume of the operative site is small relative to the volume of the remainder of the fluid system. This could result in anywhere from a partial to a total collapse of the enclosed operative site resulting in undesirable damage.

Therefore, it is an object of the present invention to provide a flow control system for keeping the pressure within an enclosed or semi-enclosed operative site at a relatively constant level.

Another object of this invention is to provide a flow control system for keeping the pressure within an enclosed or semi-enclosed operative site relatively constant while forcing a fluid through said chamber for the removal of unwanted material from said chamber.

A further object of the invention is to provide a flow control system for keeping the pressure in a small enclosed or semi-enclosed operative site relatively constant while forcing a fluid through said operative site and applying a high frequency mechanical vibratory force to a material within said chamber resulting in the breaking apart and removal of said material.

A still further object of the invention is to provide a flow control system which is sufficiently sensitive to certain changes in flow rates such that prior to any significant collapse of an enclosed site, an adjustment is made on the fluid system to avoid said collapse.

BRIEF DESCRIPTION OF THE DRAWINGS For a fuller understanding of the nature and objects of this invention, reference should be made to the following detailed disclosure taken in connection with the accompanying drawings in which:

FIG. I is a cross-sectional view of an ultrasonic handpiece showing its basic internal construction;

FIG. 2 is a cross-sectional view of an irrigationaspiration handpiece showing its basic internal construction;

FIG. 3 is a pictorial representation of a human eye in enlarged form and illustrating the use of a surgical handpiece in cataract removal; and

FIG. 4 is a schematic diagram of the combination of the ultrasonic handpiece and the flow control system.

DESCRIPTION OF THE EXEMPLARY EMBODIMENTS Referring to FIG. I, the ultr cludes a proximal end 11 and a distal end 2 and hydraulically coupled to a power and coolant supply 15 (FIG. 4) at its proximal end 11 via a coolant fluid inlet tube 16 and a coolant fluid outlet tube 17 and a pair of electrical leads 18. The electrical leads 18 are connected to coil 19 which is wound internally within the ultrasonic handpiece 10. Within said handpiece, there is a vibratory body 20 containing a transducer element 21 at the proximal end 11 of said vibratory body 20. The transducer element which may be either magnetostrictive or electrostrictive type converts the high frequency alternating current generated in the coil 19 into high frequency mechanical vibrations. The transducer element 21 is energized by the coil 19 containing the high frequency electrical signal and the resulting mechanical vibrations are transmitted via a connecting body 22 to an operative tip 23 at the proximal end 12 of the handpiece 10. The high frequency electrical signal is provided by a circuit (not shown) in the power and coolant supply 15. There are many such circuits which are well known in the art and need not be further described here.

Due to the heat generated in the transducer element 21 by the electrical-to-mechanical energy conversion occurring in the ultrasonic handpiece 10, especially if it is of a magneto strictive type, a source of coolant is provided by the power and coolant supply 15, and it is carried to and from the handpiece by the coolant fluid inlet and outlet tubes 16 and 17.

The other major elements of the handpiece 10 which are coupled to the irrigation and aspiration subsystems of the flow control system, respectivel are a fluid inlet channel 24 and a fluihe fluid inl channeg: )onnects with an annular passage 26 wit in t e u trasonic handpiece 10 which surrounds the connecting body 22 and the operative tip 23 and terminates at the very distal end 12 of the handpiece 10.

The fluid outlet channel 25 connects with a bore 27 throuh the center of the con 22 LZ-of the d iece or more details on the operation of such an u r s o v trasomc handpiece reference made to the abovenamed copending patent application.

Referring to FIG. 2, the irrigation-aspiration handpiece 30, having proximal end 31 and a distal end 32 has a fluid inlet channel 34 coupled to the irrigation subsystem of the flow control system. The fluid from the irrigation subsystem flows through an annular space 35 within the handpiece and exits at the distal end 32. The suspension from the operative site flows through a center bore 36 and exits at the fluid outlet channel 37 at the proximal end 31 of the handpiece 30. The fluid outlet channel 37 is coupled to the aspiration subsystem of the flow control system.

While the invention system can be used for the removal of material from any enclosed volume, particularly a volume in which the maintenance of a relatively constant pressure is critical, some of the discus sion in this disclosure will refer to the removal of a cataract lens from the human eye as one particular example. The use of a surgical handpiece as applied to cataract removal is illustrated in FIG. 3. A portion of a simplified cross-section of a human eye is shown to illustrate the manner in which the device is employed.

Referring to FIG. 3, the opaque or cataract lens which is to be removed is designated by the number 40, and is enclosed in a membrane including an outer portion 40a known as the anterior capsule. The iris is designated by the numeral 41 and the major gel-filled portion of the eye, or vitreous, is designated as 42. The cornea, the transparent outer surface of the eye, is shown as 43, and the portion of the eye generally called the anterior chamber is designated as 45. A small incision 46 is made near the edge of the cornea 43 to prop'de access for the distal end 12 of the ultrasonic handpiece 10 or the distal end 32 of the irrigation-aspiration handpiece 30.

Referring to FIG. 4, the dotted lines represent electrical connections and the solid lines represent hydraulic connections. Those components of the flow control system which are hydraulically coupled to the fluid inlet channel 24 of the ultrasonic handpiece 10 are part of the irrigation subsystem and those components which are hydraulically coupled to the fluid outlet channel 25 are part of the aspiration subsystem.

The irrigation subsystem comprises a treatment fluid supply 50 having a pressure I and a treatment fluid supply 55 having a pressure P,, with P being greater than P The treatment fluid is preferably a solution, which is compatible with the tissue being treated. For purposes of cataract removal, an artificial aqueous solution has been found to be satisfactory. The treatment fluid supplies 50 and 55 are connected to the fluid inlet channel 24 of the ultrasonic handpiece 10 by hydraulic tubing 56.

The function of the aspiration subsystem is to remove from the enclosed operative site (in the case of the eye it is the anterior chamber 45, see FIG. the excess treatment fluid and/or any other unwanted material which the surgeon may want to signal removed. The fluid and other unwanted material being removed from the enclosed operative site shall hereinafter be referred to as the suspension. All the components of the aspiration subsystem are interconnected and connected to the fluid outlet channel 25 of the ultrasonic handpiece 10 by hydraulic tubing 58, hereinafter to be referred to as the main suction line.

The aspiration subsystem includes a flow transducer 60, which is the first major component downstream from the handpiece along the main suction line 58. The flow transducer 60 does not impede the flow of the suspension, but it is designed to sense the flow rate and produce a corresponding electrical signal which is transmitted to the electronic flow control 70, which will be discussed in more detail later. The flow trans ducer 60, which is a commercially available product, is an electromagnetic device which produces an electrical signal proportional to the flow velocity of the suspension. The flow transducer 60 is energized by the master control panel 80.

The next major component in the aspiration subsystem downstream from the flow transducer 60 and along the main suction line 58 is the by-pass valve 90. Also connected to the by-pass valve via a tube 99 is a by-pass reservoir 100. The by-pass valve 90 is a double action solenoid such that in one position, to be referred to as its aspiration position, the suspension is allowed to flow unimpeded through the main suction line 58 and there is no flow in tube 99. in the other position of the solenoid, to be referred to as its by-pass position, there is no flow of the suspension while the solution from the by-pass reservoir 100 is allowed to flow.

The next major component in the aspiration subsystem downstream from the by-pass valve 90 and along the main suction line 58 is the pump 110. The pump 1110 is a constant displacement, variable speed, peristaltic pump. The peristaltic feature is to avoid any contact of the pump with the suspension hence minimizing maintenance problems of the pump 110, and the tubing can be easily removed from the pump for the purposes of sterilization. The constant displacement feature is necessary in order to insure accurate sensing of flow by the flow transducer 60, especially due to the exceedingly small fluid volume of the anterior chamber 45 of the eye relative to the fluidic volume of the remaining hydraulic components of the system.

Another component of the aspiration subsystem is the by-pass reservoir 100, coupled to the main suction line 58 via the by-pass valve 90. When the solenoid of the by-pass valve 90 switches to its by-pass position, the flow from the flow transducer 60 ceases, hence the aspiration of the anterior chamber 45 of the eye ceases, and instead there is a flow from the by-pass reservoir 100. The by-pass reservoir 100 is used to insure that fluid fills all portions of the main suction line 58 at all times, so that the hydraulic response time of the system is kept to a minimum. Thus, even though suction at the handpiece 10 may not be desired, from time to time, the continuously running pump 110 is always ready to apply the required suction, wherever necessary.

Another component of the aspiration subsystem is the vent valve 120 which is intermediate of the by-pass valve 90 and the pump 110. The vent valve 120 is a spring loaded, electrically operated solenoid which is normally in a shut position. An electrical signal from the electronic flow control 70 causes the vent valve 120 to open and close to complete a cycle. What determines the existence of such a signal shall be discussed in more detail later. The function of the vent valve 120 is to provide for a pressure equalization between at mospheric pressure and the hydraulic pressure in the main suction line 58, hereinafter to be referred to as venting, hence negating pressure buildup in the aspiration subsystem upon removal of the occlusion. The master control panel selectively enables the vent valve 120. This allows the vent valve 120 to become inoperative so that the system can be started prior to the commencement of an operation. The electronic flow control 70 has a control for adjusting the amount of time the vent valve 120 remains open.

In the operation of the components heretofore described, a suitable footswitch 130, having a foot-actuated control am 135 with a conductive segment 136, is uses, having an off position, three stable on positions and a fourth position to be called the transition position or position T. Position T results only when the control arm 135 moves between two of its stable on" positions.

While nothing is activated in the 05 position, it is important to note that the solenoid of the by-pass valve is in its by-pass position at this time. This would allow sterilized solution from the by-pass reservoir to flow through a portion of the aspiration subsystem, assuming the pump is in operation. The footswitch has no switching function with respect to the pump 1 10.

In footswitch position 1, (hereinafter the irrigation position), since the conductive segment [36b of the control arm bridges the pair of spaced contacts 137, the treatment fluid supply 50 is actuated, such that the treatment fluid at a pressure P, flow to the fluid inlet channel 24. The solenoid of the by-pass valve 90 remains in its by-pass position.

In footswitch position 2, (hereinafter the irrigation and aspiration position), since the conductive segment l36b of the control arm 135 bridges the pair of spaced contacts 138, the treatment fluid supply 55 is actuated such that the treatment fluid at a pressure P, flows to the fluid inlet channel 24. in addition, since the conductive segment 1360 of the control arm 135 bridges the pair of spaced contacts 139, the by-pass valve 90 changes to its aspiration position.

In footswitch position 3, (hereinafter the ultrasonic position), since the conductive segments l36b and 1360 bridge the pair of spaced contacts 141 and 142, it can be seen that the irrigation and aspiration subsystems remain in the same state as when the control arm 135 was in footswitch position 2. However, in addition, since the conductive segment 136a bridges the pair of spaced contacts 143, the circuit (not shown) of the power and coolant supply 15 is coupled to the ultrasonic handpiece l0, assuming the power and coolant supply 15 has already been energized by the master control panel 80. This results in high frequency vibrations of the operative tip 23 of the vibratory body at the proximal end 12 of handpiece l0. Simultaneous to this, a pressurized coolant is caused to flow to the handpiece l0 and back to the power and coolant supply 15 via the coolant inlet an outlet tubes 16 and 17. All the other controls of the power and coolant supply 15 are on the master control panel 80 including the on-off switch, the power level control of the circuit and the pressurizing of the coolant supply.

Position T, (the transition position) of the footswitch 130, occurs whenever the footswitch control arm 135 moves from position 1 to position 2 or vice versa. Dur- 7 ing such movement the conductive segment l36b bridges the pair of spaced contacts 144 which causes actuation of the electronic flow control 70 such that an electrical signal is sent to the vent valve 120 causing a venting of the main suction line 58, hence an equalization of the pressure in the entire aspiration subsystem.

A functional description of the electronic flow control 70 is necessary to tie together the entire system. The electronic flow control 70, which is energized by the master control panel 80, continually receives signals from the flow transducer 60 concerning the flow rate of the suspension and contains circuitry to differentiate these signals such that an electrical signal results whenever certain changes in the flow rate signals occur. The circuitry is designed so that whenever the flow rate falls below a first predetermined value and subsequently increases above a second predetermined value, a pulse is generated and sent to the vent valve 120. This results in the venting of the main suction line 58 causing the momentary elimination of the negative pressure at the bore 28 of the operative tip 23 and substantially reducing the flow of the suspension through the main suction line 58. The circuitry of the electronic flow control 70 is designed so as to account for all of the fluidic parameters of the entire system.

In addition, the circuitry of the electronic flow control 70 is designed so that whenever certain irregular conditions are sensed, such as the passage of air bubbles or lens particles through the flow transducer 60 or an impact against or constriction of one of the hydraulic tubes in the aspiration subsystem, the electronic flow control 70 will send an electrical signal to the vent valve 120.

While FIG. 4 illustrates the use of the flow control system with the ultrasonic handpiece 10, it would be equally applicable with the irrigation-aspiration handpiece 30 except that footswitch position 3 would be inapplicable.

Set-up and Operation of the System Before commencing an actual operation it is necessary to set the pressures P, and P, and the speed of the pump 110 to within the approximate range that will be required for the operation. A rubber type chamber is positioned over the tip and P,, P, and the pump speed are set by observing the effects on the rubber chamber. The desired effects on the rubber chamber are determined empirically by past experience.

Since P, is used when the footswitch is in position 1 and there is no aspiration, it must be set at a value such that it will mantain the enclosed operative site at a relatively constant volume taking into account the pressure drops throughout the irrigation subsystem and the fluid and/or suspension which may flow from the enclosed operative site through the incision leakage around the proximal end of the handpiece.

P, must be at a value higher than P, since it will be used when the footswitch is in position 2 when there is aspiration due to the operation of the pump.

it is also necessary to prime the fluid system prior to start of the operation. During this priming operation, the flow transducer 60 and the electronic flow control 70 will remain de-energized from the master control panel 80. Otherwise, continual venting would make the priming of the system very difficult, if not impossible.

It is also necessary to choose the power level for the circuit in the power and coolant supply 15. The power level determines the amplitude of that portion of the operative tip 23 which comes into contact with the cataract lens. Usually the minimum possible power level to accomplish the task is chosen.

The electronic flow control requires certain internal balances of its electrical components to take into account the ambient factors of the operating room and needs to be energized prior to the commencement of an operation to stabilize it as to temperature, transient signals, etc. Therefore, after the priming of the entire irrigation and aspiration subsystems has been completed, the flow transducer 60 and the electronic flow control 70 are energized. Then while the entire system is operating at its maximum desired flow, as detennined by the various settings discussed above, the electronic flow control 70 is programmed to read such a flow as the maximum flow rate. Then an artificial occlusion is placed along the aspiration subsystem as close to the distal end 12 of the handpiece 10 as possible. The electronic flow control 70 is then programmed to sense this as the minimum flow rate. These minimum and maximum flow rates plus the circuitry of the electronic flow control 70 which has been designed to take into account all the parameters of the system, determine the two predetermined values of flow rate, mentioned above, about which the electronic flow control 70 will react to generate an output signal to send to the vent valve 120. In addition, there is a sensitivity setting on the electronic flow control 70 which regulates the response time of the electronic flow control 70 to signals received form the flow transducer 60.

Most of the controls which are available to the surgeon and which are necessary to understand the inventive aspects of the system have already been described above. Decisions as to when to change one of the settings are in the complete discretion of the surgeon and determined in part by his operating techniques which need not be discussed for purposes of describing the invention.

The main and most serious operating problem which the surgeon must contend with is when a particle occludes the tip 23 such that the suspension is unable to leave the enclosed operative site. Since the pump ll0 continues to operate, the vacuum in the main suction line 58 will tend to increase. The surgeon will become aware of such a condition almost instantaneously and will handle the handpiece and/or ultrasonic controls in such a manner as to break apart the occlusion. At the moment the occlusion clears the tip there would be a tendency for the fluid and/or suspension within the enclosed operative site to rush into the main suction line 58 to fill the vacuum created therein. This imbalance of pressures during the occlusion, between the enclosed operative site and the main suction line 58, is especially critical since the volume of the enclosed operative site is exceedingly small as compared to the volume of the main suction line 58. If the increased flow from the enclosed operative site to the main suction line 58 is allowed to continue for too long a period of time (measured in milliseconds) it is possible that the entire contents of the enclosed operative site, including parts which are not meant to be disturbed, will be forced against the handpiece tip 23 and damaged. In the case of the human eye there is a further risk that the entire anterior chamber 45 would collapse. Any increased flow at the handpiece tip 23 will be immediately sensed at the flow transducer 60, since the average time for an occlusion is very small and there is a column of liquid between the handpiece tip 23 and the flow transducer 60. The flow transducer which is continually sensing the flow, will send a signal to the electronic flow control 70 proportional to he higher rate for flow. Since the electronic flow control 70 has been electronically programmed to react to certain changes in'the flow signals, an output signal will be sent to the vent valve 120 to vent the main suction line 58 to atmosphere and reduce the vacuum in said line. Depending upon whether the condition is corrected after one venting, the signals from the flow transducer 60 may cause the electronic flow control 70 to send another output signal to the vent valve 120. This could be repeated several times until there is an equilibrium in the flow.

it will be apparent from the foregoing, that a novel improved flow control system for the removal of unwanted material from an enclosed operative site in which it is very critical to maintain a pressure within a certain range, has been disclosed. It is also recognized that many variations of the particular system disclosed herein will occur to those skilled in the art, without departing from the spirit of the invention. Accordingly, the invention is to be deemed limited only by the scope of the appended claims.

lclaim:

1. Flow control system for removing a suspension of unwanted material in a treatment fluid from an enclosed operative site comprising,

a source of treatment fluid at a certain pressure for causing said fluid to flow into the enclosed operative site including hydraulic tubing for connecting said treatment fluid source to the enclosed operative site,

a source of negative pressure for withdrawing the suspension from the enclosed operative site including hydraulic tubing for connecting said negative pressure source to the enclosed operative site,

a flow transducer intermediate of and interconnected by the hydraulic tubing between the nega tive pressure source and the enclosed operative site, for sensing the flow of suspension and for generating an electrical signal proportional to said flow,

a vent valve coupled to the hydraulic tubing between said flow transducer and said negative pressure source for venting the flow of the suspension to atmospheric pressure, and

electronic flow control means electrically interconnected to said flow transducer and said vent valve for sending an electrical signal to said vent valve for venting the hydraulic tubing through which said suspension flows upon sensing a predetermined signal.

2. A flow control system in accordance with claim 1, wherein said electronic flow control means senses certain changes in flow rates due to the signals received from the flow transducer and at a certain predetermined value, sends an electrical signal to the vent valve for venting the hydraulic tubing through which said suspension flows.

3. A flow control system in accordance with claim I, further involving a bypass reservoir and a solenoid operated valve located intermediate of and interconnected by the hydraulic tubing between the flow transducer and the negative pressure source, the solenoid operated valve having a first position wherein the suspension only flows from the flow transducer to the negative pressure source, and having a second position wherein fluid only flows from the bypass reservoir to the negative pressure source.

4. A flow control system in accordance with claim 1 wherein the source of treatment fluid includes two separate sources of fluid each of which has a different pressure, and

said flow control system further including switch means having at least two positions, said first switch position coupling only the source of treatment fluid having the lower pressure to the enclosed operative site, said second switch position coupling the source of treatment fluid having the higher pressure and the negative pressure source to the enclosed operative site, with the vent valve receiving an electrical signal to vent the hydraulic tubing between the flow transducer and the negative pressure source whenever the switch means moves between these two positions.

5. Flow control system for removing a suspension of unwanted material in a treatment fluid from a small enclosed operative site comprising,

a first source of treatment fluid at a certain pressure for causing said fluid to flow into the enclosed operative site including hydraulic tubing for connecting said first treatment fluid source to the enclosed operative site,

a second source of treatment fluid at a pressure higher than the first source for causing said fluid to flow into the enclosed operative site including hydraulic tubing for connecting said second treatment fluid source to the enclosed operative site,

a source of negative pressure for withdrawing the suspension from the enclosed operative site including hydraulic tubing for connecting said negative pressure source to the enclosed operative site,

a flow transducer intermediate of and interconnected by the hydraulic tubing between the negative pressure source and the enclosed operative site, for sensing'the flow of the suspension and for generating an electrical signal proportional to said flow,

a vent valve coupled to the hydraulic tubing between said flow transducer and said negative pressure source for venting the flow of the suspension to atmospheric pressure,

electronic flow control means electrically interconnected to said flow transducer and said vent valve for sensing certain changes in flow rates due to the signal received from said flow transducer and, at certain predetermined value, for sending an electrical signal to the vent valve for venting the hydraulic tubing through which said suspension flows, and

a switch means having at least two positions, said first switch position coupling only the first source of treatment fluid to the enclosed operative site, said second switch position coupling the second source of treatment fluid and the negative pressure source to the enclosed operative site, with the vent valve receiving an electrical signal to vent the hydraulic position coupling only the first source of treatment fluid to the enclosed operative site, said second switch position coupling the second source of treatment fluid and the negative pressure source to the enclosed operative site, with the vent valve receiving an electrical signal to vent the hydraulic tubing between the flow transducer and the negatubing between the flow transducer and the negative pressure source whenever the switch means tive pressure source whenever the switch means moves between these two positions. moves between these two positions. 8. The combination as described in claim 7, wherein 6. A flow control system in accordance with claim 5 the flow control system further includes further including a bypass reservoir, and

abypass reservoir, and lo a solenoid operated valve located intermediate of a solenoid operated valve located intermediate of and interconnected by the the hydraulic tubing and interconnected by the hydraulic tubing between the flow transducer and the negative presbetween the flow transducer and the negative pressure source, having a first position wherein the sure source, having a first position wherein the suspension only flows from the flow transducer to suspension only flows from the flow transducer to the negative pressure source, and having a second the negative pressure source, and having a second position wherein the fluid only flows from the position wherein fluid only flows from the bypass bypass reservoir to the negative pressure source. reservoir to the negative pressure source. 9. The combination of a surgical handpiece and a 7. The combination of a surgical handpiece and a flow control system for removing a suspension of unflow control system for removing a suspension of unwanted material in a treatment fluid from an enclosed wanted material in a treatment fluid from an enclosed operative site wherein said surgical handpiece comoperative site wherein said surgical handpiece comprises pr se a fluid inlet channel for treatment fluid to enter the a fluid inlet channel for treatment fluid to enter the enclosed operative site,

enclosed operative site, a fluid outlet channel for the suspension of unwanted a fluid outlet channel for the suspension of unwanted material in the treatment fluid to exit from the enmaterial in the treatment fluid to exit from the enclosed operative site, and closed operative site, and a vibratory body, coupled to a source of high wherein the flow control system comprises frequency electrical energy, for converting said a first source of treatment fluid at a certain pressure l t i al energy t high frequency mechanical for causing said fluid to flow into the enclosed vibrations, and coupled to a source of coolant for operative site, including hydraulic tubing for concooling a portion of said vibratory body, and necting said first treatment fluid source to the enwherein the flow control system comprises, closed operative site, a first source of treatment fluid at a certain pressure second source of treatment fluid at a pressure for causing said fluid to flow into the enclosed higher than the first source for causing said fluid to operative site, including hydraulic tubing for conflow into the enclosed operative site, including necting said first treatment fluid source to the enhydraulic tubing for connecting said second treatclosed operative site, ment fluid source to the enclosed operative site, a second source of treatment fluid at a pressure source of negative pressure for withdrawing the higher than the first source for causing said fluid to suspension from the enclosed operative site inflow into the enclosed operative site, including eluding hydraulic tubing for connecting said negahydraulic tubing for connecting said second treattive pressure source to the enclosed operative site, ment fluid source to the enclosed operative site, flow transducer intermediate of and intercona source of negative pressure for withdrawing the nected by the hydraulic tubing between the nega suspension from the enclosed operative site, intive pressure source and the enclosed operative eluding hydraulic tubing for connecting said negasite, for sensing the flow of the suspension and for tive pressure source to the enclosed operative site, generating an electrical signal proportional to said a flow transducer intermediate of and interconflow, nected by the hydraulic tubing between the negaa vent valve coupled to the hydraulic tubing between tive pressure source and the enclosed operative said flow transducer and said negative pressure site, for sensing the flow of the suspension and for source for venting the flow of the suspension to atgenerating an electrical signal proportional to said mospheric pressure, flow, electronic flow control means electrically intercona vent valve coupled to the hydraulic tubing between nected to said flow transducer and said vent valve said flow transducer and said negative pressure for sensing certain changes in flow rates due to the source for venting the flow of the suspension to atsignal received from said flow transducer and, at a mospheric pressure, certain predetermined value, for sending an elecelectronic flow control means electrically intercontrical signal to the vent valve for venting the nected to said flow transducer and said vent valve hydraulic tubing through which said suspension for sensing certain changes rates flow rtes due to flows, and the signal received from said flow transducer and, aswitch means having at least two positions, said first at a certain predetermined value, for sending an electrical signal to the vent valve for venting the hydraulic tubing through which said suspension flows, and

.a switch means having three positions, said first sure source to the enclosed operative site and energizing the high frequency vibratory body; with the vent valve receiving an electrical signal to vent the hydraulic tubing between the flow transducer and the negative pressure source whenever the switch means moves between the first and second positions.

Claims (9)

1. Flow control system for removing a suspension of unwanted material in a treatment fluid from an enclosed operative site comprising, a source of treatment fluid at a certain pressure for causing said fluid to flow into the enclosed operative site including hydraulic tubing for connecting said treatment fluid source to the enclosed operative site, a source of negative pressure for withdrawing the suspension from the enclosed operative site including hydraulic tubing for connecting said negative pressure source to the enclosed operative site, a flow transducer intermediate of and interconnected by the hydraulic tubing between the negative pressure source and the enclosed operative site, for sensing the flow of suspension and for generating an electrical signal proportional to said flow, a vent valve coupled to the hydraulic tubing between said flow transducer and said negative pressure source for venting the flow of the suspension to atmospheric pressure, and electronic flow control means electrically interconnected to said flow transducer and said vent valve for sending an electrical signal to said vent valve for venting the hydraulic tubing through which said suspension flows upon sensing a predetermined signal.
2. A flow control system in accordance with claim 1, wherein said electronic flow control means senses certain changes in flow rates due to the signals received from the flow transducer and at a certain predetermined value, sends an electrical signal to the vent valve for venting the hydraulic tubing through which said suspension flows.
3. A flow control system in accordance with claim 1, further involving a bypass reservoir and a solenoid operated valve located intermediate of and interconnected by the hydraulic tubing between the flow transducer and the negative pressure source, the solenoid operated valve having a first position wherein the suspension only flows from the flow transducer to the negative pressure source, and having a second position wherein fluid only flows from the bypass reservoir to the negative pressure source.
4. A flow control system in accordance with claim 1 wherein the source of treatment fluid includes two separate sources of fluid each of which has a different pressure, and said flow control system further including switch means having at least two positions, said first switch position coupling only the source of treatment fluid having the lower pressure to the enclosed operative site, said second switch position coupling the source of treatment fluid having the higher pressure and the negative pressure source to the enclosed operative site, with the vent valve receiving an electrical signal to vent the hydraulic tubing between the flow transducer and the negative pressure source whenever the switch means moves between these two positions.
5. Flow control system for removing a suspension of unwanted material in a treatment fluid from a small enclosed operative site comprising, a first source of treatment fluid at a certain pressure for causing said fluid to flow into the enclosed operative site including hydraulic tubing for connecting said first treatment fluid source to the enclosed operative site, a second source of treatment fluid at a pressure higher than the first source for causing said fluid to flow into the enclosed operative site including hydraulic tubing for connecting said second treatment fluid source to the enclosed operative site, a source of negative pressure for withdrawing the suspension from the enclosed operative site including hydraulic tubing for connecting said negative pressure source to the enclosed operative site, a flow transducer intermediate of and interconnected by the hydraulic tubing between the negative pressure source and the enclosed operative site, for sensing the flow of the suspension and for generating an electrical signal proportional to said flow, a vent valve coupled to the hydraulic tubing between said flow transducer and said negative pressure source for venting the flow of the suspension to atmospheric pressure, electronic flow control means electrically interconnected to said flow transducer and said vent valve for sensing certain changes in flow rates due to the signal received from said flow transducer and, at certain predetermined value, for sending an electrical signal to the vent valve for venting the hydraulic tubing through which said suspension flows, and a switch means having at least two positions, said first switch position coupling only the first source of treatment fluid to the enclosed operative site, said second switch position coupling the second source of treatment fluid and the negative pressure source to the enclosed operative site, with the vent valve receiving an electrical signal to vent the hydraulic tubing between the flow transducer and the negative pressure source whenever the switch means moves between these two positions.
6. A flow control system in accordance with claim 5 further including a bypass reservoir, and a solenoid operated valve located intermediate of and interconnected by the hydraulic tubing between the flow transducer and the negative pressure source, having a first position wherein the suspension only flows from the flow transducer to the negative pressure source, and having a second position wherein fluid only flows from the bypass reservoir to the negative pressure source.
7. The combination of a surgical handpiece and a flow control system for removing a suspension of unwanted material in a treatment fluid from an enclosed operative site wherein said surgical handpiece comprises a fluid inlet channel for treaTment fluid to enter the enclosed operative site, a fluid outlet channel for the suspension of unwanted material in the treatment fluid to exit from the enclosed operative site, and wherein the flow control system comprises a first source of treatment fluid at a certain pressure for causing said fluid to flow into the enclosed operative site, including hydraulic tubing for connecting said first treatment fluid source to the enclosed operative site, a second source of treatment fluid at a pressure higher than the first source for causing said fluid to flow into the enclosed operative site, including hydraulic tubing for connecting said second treatment fluid source to the enclosed operative site, a source of negative pressure for withdrawing the suspension from the enclosed operative site including hydraulic tubing for connecting said negative pressure source to the enclosed operative site, a flow transducer intermediate of and interconnected by the hydraulic tubing between the negative pressure source and the enclosed operative site, for sensing the flow of the suspension and for generating an electrical signal proportional to said flow, a vent valve coupled to the hydraulic tubing between said flow transducer and said negative pressure source for venting the flow of the suspension to atmospheric pressure, electronic flow control means electrically interconnected to said flow transducer and said vent valve for sensing certain changes in flow rates due to the signal received from said flow transducer and, at a certain predetermined value, for sending an electrical signal to the vent valve for venting the hydraulic tubing through which said suspension flows, and a switch means having at least two positions, said first position coupling only the first source of treatment fluid to the enclosed operative site, said second switch position coupling the second source of treatment fluid and the negative pressure source to the enclosed operative site, with the vent valve receiving an electrical signal to vent the hydraulic tubing between the flow transducer and the negative pressure source whenever the switch means moves between these two positions.
8. The combination as described in claim 7, wherein the flow control system further includes a bypass reservoir, and a solenoid operated valve located intermediate of and interconnected by the the hydraulic tubing between the flow transducer and the negative pressure source, having a first position wherein the suspension only flows from the flow transducer to the negative pressure source, and having a second position wherein the fluid only flows from the bypass reservoir to the negative pressure source.
9. The combination of a surgical handpiece and a flow control system for removing a suspension of unwanted material in a treatment fluid from an enclosed operative site wherein said surgical handpiece comprises a fluid inlet channel for treatment fluid to enter the enclosed operative site, a fluid outlet channel for the suspension of unwanted material in the treatment fluid to exit from the enclosed operative site, and a vibratory body, coupled to a source of high frequency electrical energy, for converting said electrical energy to high frequency mechanical vibrations, and coupled to a source of coolant for cooling a portion of said vibratory body, and wherein the flow control system comprises, a first source of treatment fluid at a certain pressure for causing said fluid to flow into the enclosed operative site, including hydraulic tubing for connecting said first treatment fluid source to the enclosed operative site, a second source of treatment fluid at a pressure higher than the first source for causing said fluid to flow into the enclosed operative site, including hydraulic tubing for connecting said second treatment fluid source to the enclosed operative site, a source of negative pressure for withdrawing the suspension from the enclosed operativE site, including hydraulic tubing for connecting said negative pressure source to the enclosed operative site, a flow transducer intermediate of and interconnected by the hydraulic tubing between the negative pressure source and the enclosed operative site, for sensing the flow of the suspension and for generating an electrical signal proportional to said flow, a vent valve coupled to the hydraulic tubing between said flow transducer and said negative pressure source for venting the flow of the suspension to atmospheric pressure, electronic flow control means electrically interconnected to said flow transducer and said vent valve for sensing certain changes rates flow rtes due to the signal received from said flow transducer and, at a certain predetermined value, for sending an electrical signal to the vent valve for venting the hydraulic tubing through which said suspension flows, and a switch means having three positions, said first switch position coupling only the source of treatment fluid having the lower pressure to the enclosed operative site, said second switch position coupling the source of treatment fluid having the higher pressure and the negative pressure source to the enclosed operative site, and said third switch position coupling the source of treatment fluid having the higher pressure and the negative pressure source to the enclosed operative site and energizing the high frequency vibratory body; with the vent valve receiving an electrical signal to vent the hydraulic tubing between the flow transducer and the negative pressure source whenever the switch means moves between the first and second positions.
US3693613D 1970-12-09 1970-12-09 Surgical handpiece and flow control system for use therewith Expired - Lifetime US3693613A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US9647370A true 1970-12-09 1970-12-09

Publications (1)

Publication Number Publication Date
US3693613A true US3693613A (en) 1972-09-26

Family

ID=22257489

Family Applications (1)

Application Number Title Priority Date Filing Date
US3693613D Expired - Lifetime US3693613A (en) 1970-12-09 1970-12-09 Surgical handpiece and flow control system for use therewith

Country Status (1)

Country Link
US (1) US3693613A (en)

Cited By (223)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3736938A (en) * 1971-11-15 1973-06-05 Nasa Ophthalmic method and apparatus
US3812855A (en) * 1971-12-15 1974-05-28 Surgical Design Corp System for controlling fluid and suction pressure
US3818913A (en) * 1972-08-30 1974-06-25 M Wallach Surgical apparatus for removal of tissue
US3902495A (en) * 1974-01-28 1975-09-02 Cavitron Corp Flow control system
US3927675A (en) * 1972-11-16 1975-12-23 Reimar Pohlman Device for fragmenting urinary calculus
US3955574A (en) * 1974-12-09 1976-05-11 Rubinstein Morton K Pumping system for catheter suction units
US4056855A (en) * 1976-04-07 1977-11-08 Charles Kelman Intraocular lens and method of implanting same
FR2383649A1 (en) * 1977-03-15 1978-10-13 Fibra Sonics Apparatus and ultrasonic medico-surgical system
US4215476A (en) * 1977-03-25 1980-08-05 Armstrong Alexander S Health services combination irrigator and aspirator
US4223676A (en) * 1977-12-19 1980-09-23 Cavitron Corporation Ultrasonic aspirator
US4332558A (en) * 1980-05-20 1982-06-01 Lustig Leopold P Dental scaling apparatus
DE3247124A1 (en) * 1982-04-13 1983-10-20 Go G Med Inst Im S M Kirova Go A device for destruction and aspiration of the eye tissue
JPS5993414U (en) * 1982-12-09 1984-06-25
US4493694A (en) * 1980-10-17 1985-01-15 Cooper Lasersonics, Inc. Surgical pre-aspirator
US4515583A (en) * 1983-10-17 1985-05-07 Coopervision, Inc. Operative elliptical probe for ultrasonic surgical instrument and method of its use
EP0139753A1 (en) * 1983-04-04 1985-05-08 Sumitomo Bakelite Company Limited Ultrasonic oscillator
US4516398A (en) * 1980-10-08 1985-05-14 Cooper Lasersonics, Inc. Method of use of an ultrasonic surgical pre-aspirator having a orifice by-pass
US4526571A (en) * 1982-10-15 1985-07-02 Cooper Lasersonics, Inc. Curved ultrasonic surgical aspirator
US4530356A (en) * 1983-02-08 1985-07-23 Helfgott Maxwell A Ophthalmic surgical instrument with beveled tip
US4561438A (en) * 1982-03-04 1985-12-31 Richard Wolf Gmbh Piezoelectric transducer with curved shafts
FR2571622A1 (en) * 1984-10-15 1986-04-18 France Chirurgie Instr Ocular micro-inhaler
JPS61179150A (en) * 1984-10-31 1986-08-11 United Sonitsukusu Inc Cell plasma removing apparatus in tissue
US4634419A (en) * 1985-12-13 1987-01-06 Cooper Lasersonics, Inc. Angulated ultrasonic surgical handpieces and method for their production
US4643717A (en) * 1985-09-16 1987-02-17 Site Microsurgical Systems, Inc. Aspiration fitting adaptor
EP0226622A1 (en) * 1985-06-05 1987-07-01 Nestle S.A. Connecting fitting of a fluid flow control system
US4681561A (en) * 1986-01-24 1987-07-21 Coopervision, Inc. Ultrasonic decoupling sleeve
JPS63500850A (en) * 1985-08-28 1988-03-31
US4750902A (en) * 1985-08-28 1988-06-14 Sonomed Technology, Inc. Endoscopic ultrasonic aspirators
US4750488A (en) * 1986-05-19 1988-06-14 Sonomed Technology, Inc. Vibration apparatus preferably for endoscopic ultrasonic aspirator
WO1989003230A1 (en) * 1987-10-14 1989-04-20 The Cooper Companies, Inc. Surgical irrigation and aspiration system
US4825865A (en) * 1987-05-01 1989-05-02 Jerry Zelman Apparatus and method for extracting cataract tissue
US4827911A (en) * 1986-04-02 1989-05-09 Cooper Lasersonics, Inc. Method and apparatus for ultrasonic surgical fragmentation and removal of tissue
US4832685A (en) * 1985-06-05 1989-05-23 Coopervision, Inc. Fluid flow control system and connecting fitting therefor
US4838281A (en) * 1985-02-28 1989-06-13 Alcon Laboratories, Inc. Linear suction control system
US4869715A (en) * 1988-04-21 1989-09-26 Sherburne Fred S Ultrasonic cone and method of construction
US4897079A (en) * 1988-07-22 1990-01-30 Allergan, Inc. Polymeric sleeve for surgical instruments
US4921476A (en) * 1980-10-08 1990-05-01 Cavitron, Inc. Method for preventing clogging of a surgical aspirator
US4922902A (en) * 1986-05-19 1990-05-08 Valleylab, Inc. Method for removing cellular material with endoscopic ultrasonic aspirator
US4931047A (en) * 1987-09-30 1990-06-05 Cavitron, Inc. Method and apparatus for providing enhanced tissue fragmentation and/or hemostasis
US4935005A (en) * 1985-06-05 1990-06-19 Nestle, S.A. Opthalmic fluid flow control system
US4989583A (en) * 1988-10-21 1991-02-05 Nestle S.A. Ultrasonic cutting tip assembly
US5011471A (en) * 1987-12-24 1991-04-30 Sumitomo Bakelite Company Limited Excretions treating apparatus
AU609652B2 (en) * 1988-12-20 1991-05-02 Sherwood Services Ag Improved resonator for surgical handpiece
US5015227A (en) * 1987-09-30 1991-05-14 Valleylab Inc. Apparatus for providing enhanced tissue fragmentation and/or hemostasis
US5057098A (en) * 1987-05-01 1991-10-15 Ophthalmocare, Inc. Apparatus and method for extracting cataract tissue
EP0484050A1 (en) * 1990-10-26 1992-05-06 Alcon Surgical, Inc., System and apparatus for controlling fluid flow to and from a surgical site
US5112300A (en) * 1990-04-03 1992-05-12 Alcon Surgical, Inc. Method and apparatus for controlling ultrasonic fragmentation of body tissue
US5112339A (en) * 1990-06-18 1992-05-12 Ophthalmocare, Inc. Apparatus for extracting cataractous tissue
US5125837A (en) * 1988-01-06 1992-06-30 Dentsply Management Corp. Apparatus and method for therapeutic lavage and scaling of teeth
US5139504A (en) * 1987-05-01 1992-08-18 Ophthalmocare, Inc. Apparatus, system, and method for softening and extracting cataractous tissue
US5157603A (en) * 1986-11-06 1992-10-20 Storz Instrument Company Control system for ophthalmic surgical instruments
US5185002A (en) * 1991-06-28 1993-02-09 Alcon Surgical, Inc. Transducer apparatus having water hammer dampening means
US5188589A (en) * 1991-10-10 1993-02-23 Alcon Surgical, Inc. Textured irrigating sleeve
US5190517A (en) * 1991-06-06 1993-03-02 Valleylab Inc. Electrosurgical and ultrasonic surgical system
US5199943A (en) * 1991-12-12 1993-04-06 Alcon Surgical, Inc. Ultrasonic surgical handpiece
US5255669A (en) * 1989-04-12 1993-10-26 Olympus Optical Co., Ltd. Ultrasonic treatment apparatus
US5261883A (en) * 1990-10-26 1993-11-16 Alcon Surgical, Inc. Portable apparatus for controlling fluid flow to a surgical site
FR2691624A1 (en) * 1992-05-29 1993-12-03 Medicamat Promotion Diffusion Ultrasonic vibrator for curetting of biological tissue - uses three pipes one for irrigation, one for aspiration and other for air input.
US5284484A (en) * 1990-02-06 1994-02-08 Advanced Osseous Technologies, Inc. Apparatus for implantation and extraction of osteal prostheses
EP0596967A1 (en) * 1991-07-31 1994-05-18 Mentor O & O Inc. Controlling operation of handpieces during ophthalmic surgery
US5318570A (en) * 1989-01-31 1994-06-07 Advanced Osseous Technologies, Inc. Ultrasonic tool
US5324297A (en) * 1989-01-31 1994-06-28 Advanced Osseous Technologies, Inc. Ultrasonic tool connector
US5342293A (en) * 1993-06-22 1994-08-30 Allergan, Inc. Variable vacuum/variable flow phacoemulsification method
US5349852A (en) * 1986-03-04 1994-09-27 Deka Products Limited Partnership Pump controller using acoustic spectral analysis
US5360398A (en) * 1992-11-06 1994-11-01 Grieshaber & Co. Ag Schaffhausen Ophthalmological aspiration and irrigation system
US5370602A (en) * 1992-09-04 1994-12-06 American Cyanamid Company Phacoemulsification probe circuit with pulse width Modulating drive
US5382251A (en) * 1989-01-31 1995-01-17 Biomet, Inc. Plug pulling method
US5403276A (en) * 1993-02-16 1995-04-04 Danek Medical, Inc. Apparatus for minimally invasive tissue removal
US5419703A (en) * 1988-02-18 1995-05-30 Dentsply Research & Development Corp. Method of subgingival scaling and lavage
US5429601A (en) * 1992-02-12 1995-07-04 American Cyanamid Company Aspiration control system
US5456686A (en) * 1989-01-31 1995-10-10 Biomet, Inc. Implantation and removal of orthopedic prostheses
US5464389A (en) * 1993-08-10 1995-11-07 Stahl; Norman O. Working tip for fragmenting and aspirating ocular tissue
WO1996024314A1 (en) 1995-02-06 1996-08-15 Mark Andrew Method and apparatus for lenticular liquefaction and aspiration
US5549139A (en) * 1989-10-27 1996-08-27 Storz Instrument Company Pneumatic controls for ophthalmic surgical system
US5560247A (en) * 1992-09-16 1996-10-01 Honda Giken Kogyo Kabushiki Kaisha Exhaust gas sampling device for outboard motor
US5569188A (en) * 1995-04-11 1996-10-29 Mackool; Richard J. Apparatus for controlling fluid flow through a surgical instrument and the temperature of an ultrasonic instrument
US5575310A (en) * 1986-03-04 1996-11-19 Deka Products Limited Partnership Flow control system with volume-measuring system using a resonatable mass
US5624394A (en) * 1994-10-28 1997-04-29 Iolab Corporation Vacuum system and a method of operating a vacuum system
WO1997037700A1 (en) * 1996-04-04 1997-10-16 Allergan Sales, Inc. Method of infusion control during phacoemulsification surgery
US5722945A (en) * 1990-07-17 1998-03-03 Aziz Yehia Anis Removal of tissue
US5730717A (en) * 1994-12-16 1998-03-24 Gelbfish; Gary A. Method and associated device for removing material from body
US5733266A (en) * 1996-07-26 1998-03-31 Gravlee, Jr.; Joseph F. Hypodermic needle
US5788679A (en) * 1996-06-26 1998-08-04 Gravlee, Jr.; Joseph F. Phacoemulsification needle
US5810766A (en) * 1995-02-28 1998-09-22 Chiron Vision Corporation Infusion/aspiration apparatus with removable cassette
US5827292A (en) * 1990-07-17 1998-10-27 Anis; Aziz Yehia Removal of tissue
US5830176A (en) * 1995-12-26 1998-11-03 Mackool; Richard J. Maintenance of pressure within a surgical site during a surgical procedure
US5833643A (en) * 1996-06-07 1998-11-10 Scieran Technologies, Inc. Apparatus for performing ophthalmic procedures
US5910110A (en) * 1995-06-07 1999-06-08 Mentor Ophthalmics, Inc. Controlling pressure in the eye during surgery
US5910139A (en) * 1996-08-29 1999-06-08 Storz Instrument Co. Numeric keypad simulated on touchscreen
US5928218A (en) * 1994-12-16 1999-07-27 Gelbfish; Gary A. Medical material removal method and associated instrumentation
US5941887A (en) * 1996-09-03 1999-08-24 Bausch & Lomb Surgical, Inc. Sleeve for a surgical instrument
WO1999045868A1 (en) * 1998-03-10 1999-09-16 Allergan Sales, Inc. Temperature controler and method for phacoemulsification
US5984904A (en) * 1996-08-22 1999-11-16 Bausch & Lomb Surgical, Inc. Sleeve for a surgical instrument
US5984889A (en) * 1996-02-23 1999-11-16 Allergan Sales, Inc. Apparatus and method for delivering viscoelastic material to an eye
US5997528A (en) * 1996-08-29 1999-12-07 Bausch & Lomb Surgical, Inc. Surgical system providing automatic reconfiguration
US6013048A (en) * 1997-11-07 2000-01-11 Mentor Corporation Ultrasonic assisted liposuction system
US6030212A (en) * 1996-09-27 2000-02-29 Dentsply Research & Development Corp. Stacking reservoir and scaler system
US6055458A (en) * 1997-08-28 2000-04-25 Bausch & Lomb Surgical, Inc. Modes/surgical functions
US6086576A (en) * 1996-08-29 2000-07-11 Bausch & Lomb Surgical, Inc. Automatically switching the termination of a communications bus
US6117126A (en) * 1996-08-29 2000-09-12 Bausch & Lomb Surgical, Inc. Surgical module with independent microprocessor-based communication
US6126668A (en) * 1997-04-25 2000-10-03 Innovative Optics, Inc. Microkeratome
US6159176A (en) * 1997-12-11 2000-12-12 Sonics & Materials Inc. Sheath and support for ultrasonic elongate tip
WO2000074615A2 (en) 1999-06-04 2000-12-14 Alcon Universal Ltd. Phaco-emulsification needle
US6203516B1 (en) 1996-08-29 2001-03-20 Bausch & Lomb Surgical, Inc. Phacoemulsification device and method for using dual loop frequency and power control
US6251113B1 (en) 1996-08-29 2001-06-26 Bausch & Lomb Surgical, Inc. Ophthalmic microsurgical system employing surgical module employing flash EEPROM and reprogrammable modules
US6258111B1 (en) 1997-10-03 2001-07-10 Scieran Technologies, Inc. Apparatus and method for performing ophthalmic procedures
US6283937B1 (en) * 1998-06-30 2001-09-04 Nidek Co. Ltd. Irrigation/aspiration apparatus
US6352519B1 (en) 1990-07-17 2002-03-05 Aziz Yehia Anis Removal of tissue
US6358260B1 (en) 1998-04-20 2002-03-19 Med-Logics, Inc. Automatic corneal shaper with two separate drive mechanisms
US6425905B1 (en) 2000-11-29 2002-07-30 Med-Logics, Inc. Method and apparatus for facilitating removal of a corneal graft
US6428508B1 (en) 2000-02-01 2002-08-06 Enlighten Technologies, Inc. Pulsed vacuum cataract removal system
US20020173695A1 (en) * 2001-05-16 2002-11-21 Mikhail Skliar Physiologically-based control system and method for using the same
US20030047434A1 (en) * 2001-09-07 2003-03-13 Hanson Michael R. Foot switch pedal controller for a surgical instrument
US6544211B1 (en) 1995-02-06 2003-04-08 Mark S. Andrew Tissue liquefaction and aspiration
US6579255B2 (en) * 2001-07-31 2003-06-17 Advanced Medical Optics, Inc. Pressurized flow of fluid into the eye using pump and pressure measurement system
US6599271B1 (en) 1999-04-13 2003-07-29 Syntec, Inc. Ophthalmic flow converter
US6663644B1 (en) 2000-06-02 2003-12-16 Med-Logics, Inc. Cutting blade assembly for a microkeratome
US6676629B2 (en) 1995-02-06 2004-01-13 Mark S. Andrew Tissue liquefaction and aspiration for dental treatment
US6699285B2 (en) 1999-09-24 2004-03-02 Scieran Technologies, Inc. Eye endoplant for the reattachment of a retina
US6702832B2 (en) 1999-07-08 2004-03-09 Med Logics, Inc. Medical device for cutting a cornea that has a vacuum ring with a slitted vacuum opening
US20050209561A1 (en) * 2004-03-22 2005-09-22 Raphael Gordon Method of detecting surgical events
US20050209560A1 (en) * 2004-03-22 2005-09-22 Alcon, Inc. Method of controlling a surgical system based on a rate of change of an operating parameter
US20050228425A1 (en) * 2004-03-22 2005-10-13 Alcon, Inc. Method of controlling a surgical system based on a load on the cutting tip of a handpiece
US20050267504A1 (en) * 2004-03-22 2005-12-01 Alcon, Inc. Method of controlling a surgical system based on irrigation flow
US20050277869A1 (en) * 2004-03-22 2005-12-15 Alcon, Inc. Method of operating an ultrasound handpiece
US20060002982A1 (en) * 2004-06-30 2006-01-05 Bausch & Lomb Incorporated Xanthan gum viscoelastic composition, method of use and package
US20060036180A1 (en) * 2004-08-12 2006-02-16 Mikhail Boukhny Ultrasonic handpiece
US20060041220A1 (en) * 2004-08-12 2006-02-23 Alcon, Inc. Ultrasound handpiece
US7011644B1 (en) 1995-02-06 2006-03-14 Andrew Mark S Tissue liquefaction and aspiration for dental treatment
US20060073184A1 (en) * 2004-09-29 2006-04-06 Bausch & Lomb Inc. Viscoelastic composition, methods of use and packaging device with anti-oxidant
US20060078448A1 (en) * 2004-10-11 2006-04-13 Holden Hugo R Phacoemulsification machine with post-occlusion surge control system and related method
US7044948B2 (en) 2002-12-10 2006-05-16 Sherwood Services Ag Circuit for controlling arc energy from an electrosurgical generator
US20060161101A1 (en) * 2005-01-18 2006-07-20 Alcon, Inc. Surgical system and handpiece
US20060182296A1 (en) * 2005-02-11 2006-08-17 Natan Bauman Ultrasonic ear wax cleaning system
US20060212039A1 (en) * 2005-03-16 2006-09-21 Alcon, Inc. Pumping chamber for a liquefaction handpiece
US20060212037A1 (en) * 2005-03-16 2006-09-21 Alcon, Inc. Pumping chamber for a liquefaction handpiece
US7131860B2 (en) 2003-11-20 2006-11-07 Sherwood Services Ag Connector systems for electrosurgical generator
US7137980B2 (en) 1998-10-23 2006-11-21 Sherwood Services Ag Method and system for controlling output of RF medical generator
US7255694B2 (en) 2002-12-10 2007-08-14 Sherwood Services Ag Variable output crest factor electrosurgical generator
US7300435B2 (en) 2003-11-21 2007-11-27 Sherwood Services Ag Automatic control system for an electrosurgical generator
US7303557B2 (en) 1998-10-23 2007-12-04 Sherwood Services Ag Vessel sealing system
US7311700B2 (en) 2000-11-29 2007-12-25 Med-Logics, Inc. LASIK laminar flow system
US20080071263A1 (en) * 2006-09-19 2008-03-20 Sherwood Services Ag System and method for return electrode monitoring
US7364577B2 (en) 2002-02-11 2008-04-29 Sherwood Services Ag Vessel sealing system
USRE40388E1 (en) 1997-04-09 2008-06-17 Covidien Ag Electrosurgical generator with adaptive power control
US7396336B2 (en) 2003-10-30 2008-07-08 Sherwood Services Ag Switched resonant ultrasonic power amplifier system
US20080172076A1 (en) * 2006-11-01 2008-07-17 Alcon, Inc. Ultrasound apparatus and method of use
US20080281253A1 (en) * 2007-05-10 2008-11-13 Injev Valentine P Method of Operating an Ultrasound Handpiece
US20090032123A1 (en) * 2007-07-31 2009-02-05 Bourne John M Check Valve
US7513896B2 (en) 2006-01-24 2009-04-07 Covidien Ag Dual synchro-resonant electrosurgical apparatus with bi-directional magnetic coupling
US20090118663A1 (en) * 2007-11-05 2009-05-07 Advanced Medical Optics, Inc. Systems and methods for enhanced occlusion removal during ophthalmic surgery
US20090163852A1 (en) * 2007-12-20 2009-06-25 Cull Laurence J Surgical System Having Means for Isolating Vacuum Pump
US20090158812A1 (en) * 2007-12-21 2009-06-25 Ross Peter Jones Air filter for ophthalmic surgical system
WO2009076717A1 (en) * 2007-12-19 2009-06-25 Opto Global Holdings Pty. Ltd. Control flow devices, methods, and systems
US7628786B2 (en) 2004-10-13 2009-12-08 Covidien Ag Universal foot switch contact port
US7648499B2 (en) 2006-03-21 2010-01-19 Covidien Ag System and method for generating radio frequency energy
US7651492B2 (en) 2006-04-24 2010-01-26 Covidien Ag Arc based adaptive control system for an electrosurgical unit
US7651493B2 (en) 2006-03-03 2010-01-26 Covidien Ag System and method for controlling electrosurgical snares
US20100036256A1 (en) * 2008-08-08 2010-02-11 Mikhail Boukhny Offset ultrasonic hand piece
US20100036387A1 (en) * 2004-03-29 2010-02-11 Claudio Bucolo Viscoelastic Composition for Surgical Procedures
WO2010021951A2 (en) 2008-08-18 2010-02-25 The Brigham And Women's Hospital, Inc. Integrated surgical sampling probe
US20100094321A1 (en) * 2008-10-10 2010-04-15 Takayuki Akahoshi Ultrasound Handpiece
US20100094201A1 (en) * 2008-10-13 2010-04-15 Boston Scientific Scimed, Inc. Assisted aspiration catheter system
US7722601B2 (en) 2003-05-01 2010-05-25 Covidien Ag Method and system for programming and controlling an electrosurgical generator system
US7731717B2 (en) 2006-08-08 2010-06-08 Covidien Ag System and method for controlling RF output during tissue sealing
US20100145302A1 (en) * 2008-12-08 2010-06-10 Cull Laurence J Flow control system based on leakage
US7749217B2 (en) 2002-05-06 2010-07-06 Covidien Ag Method and system for optically detecting blood and controlling a generator during electrosurgery
US20100191178A1 (en) * 2009-01-07 2010-07-29 Enlighten Technologies, Inc. Tissue removal devices, systems and methods
US7766905B2 (en) 2004-02-12 2010-08-03 Covidien Ag Method and system for continuity testing of medical electrodes
US7780662B2 (en) 2004-03-02 2010-08-24 Covidien Ag Vessel sealing system using capacitive RF dielectric heating
US7794457B2 (en) 2006-09-28 2010-09-14 Covidien Ag Transformer for RF voltage sensing
WO2010114976A1 (en) * 2009-04-01 2010-10-07 Prosolia, Inc. Method and system for surface sampling
US7834484B2 (en) 2007-07-16 2010-11-16 Tyco Healthcare Group Lp Connection cable and method for activating a voltage-controlled generator
US20100324581A1 (en) * 2006-12-08 2010-12-23 Alcon, Inc. Torsional Ultrasound Hand Piece That Eliminates Chatter
US7901400B2 (en) 1998-10-23 2011-03-08 Covidien Ag Method and system for controlling output of RF medical generator
US20110071415A1 (en) * 2009-03-13 2011-03-24 Atrium Medical Corporation Pleural drainage system and method of use
US7927328B2 (en) 2006-01-24 2011-04-19 Covidien Ag System and method for closed loop monitoring of monopolar electrosurgical apparatus
US7947039B2 (en) 2005-12-12 2011-05-24 Covidien Ag Laparoscopic apparatus for performing electrosurgical procedures
US20110137232A1 (en) * 2009-12-09 2011-06-09 Alcon Research, Ltd. Thermal Management Algorithm For Phacoemulsification System
US7972328B2 (en) 2006-01-24 2011-07-05 Covidien Ag System and method for tissue sealing
US8034049B2 (en) 2006-08-08 2011-10-11 Covidien Ag System and method for measuring initial tissue impedance
US8104956B2 (en) 2003-10-23 2012-01-31 Covidien Ag Thermocouple measurement circuit
US8147485B2 (en) 2006-01-24 2012-04-03 Covidien Ag System and method for tissue sealing
US20120083773A1 (en) * 2010-10-04 2012-04-05 Foster William J Small diameter fragmatome for minimally traumatic retained lens fragments removal
US20120089080A1 (en) * 2009-01-07 2012-04-12 Enlighten Technologies, Inc. Tissue removal devices, systems and methods
US8216220B2 (en) 2007-09-07 2012-07-10 Tyco Healthcare Group Lp System and method for transmission of combined data stream
US8216223B2 (en) 2006-01-24 2012-07-10 Covidien Ag System and method for tissue sealing
US8226639B2 (en) 2008-06-10 2012-07-24 Tyco Healthcare Group Lp System and method for output control of electrosurgical generator
USRE43617E1 (en) 1995-02-06 2012-08-28 Andrew Mark S Tissue liquefaction and aspiration
US8291933B2 (en) 2008-09-25 2012-10-23 Novartis Ag Spring-less check valve for a handpiece
US8414605B2 (en) 2011-07-08 2013-04-09 Alcon Research, Ltd. Vacuum level control of power for phacoemulsification hand piece
US8486061B2 (en) 2009-01-12 2013-07-16 Covidien Lp Imaginary impedance process monitoring and intelligent shut-off
US8512332B2 (en) 2007-09-21 2013-08-20 Covidien Lp Real-time arc control in electrosurgical generators
US8523854B2 (en) 2008-08-28 2013-09-03 Covidien Lp Microwave antenna
US8623040B2 (en) 2009-07-01 2014-01-07 Alcon Research, Ltd. Phacoemulsification hook tip
USD698019S1 (en) 2013-03-05 2014-01-21 Alcon Research, Ltd. Ophthalmic surgical cassette
US8663214B2 (en) 2006-01-24 2014-03-04 Covidien Ag Method and system for controlling an output of a radio-frequency medical generator having an impedance based control algorithm
US20140074013A1 (en) * 2012-09-07 2014-03-13 Bausch & Lomb Incorporated Vibrating Surgical Device for Removal of Vitreous and Other Tissue
US8685016B2 (en) 2006-01-24 2014-04-01 Covidien Ag System and method for tissue sealing
US8734438B2 (en) 2005-10-21 2014-05-27 Covidien Ag Circuit and method for reducing stored energy in an electrosurgical generator
US8753334B2 (en) 2006-05-10 2014-06-17 Covidien Ag System and method for reducing leakage current in an electrosurgical generator
US8777941B2 (en) 2007-05-10 2014-07-15 Covidien Lp Adjustable impedance electrosurgical electrodes
US8784357B2 (en) 2010-09-15 2014-07-22 Alcon Research, Ltd. Phacoemulsification hand piece with two independent transducers
US8808161B2 (en) 2003-10-23 2014-08-19 Covidien Ag Redundant temperature monitoring in electrosurgical systems for safety mitigation
US8852091B2 (en) 2012-04-04 2014-10-07 Alcon Research, Ltd. Devices, systems, and methods for pupil expansion
US8992493B2 (en) 2009-03-13 2015-03-31 Atrium Medical Corporation Chest drainage systems and methods
US9186200B2 (en) 2006-01-24 2015-11-17 Covidien Ag System and method for tissue sealing
US9248221B2 (en) 2014-04-08 2016-02-02 Incuvate, Llc Aspiration monitoring system and method
US9433427B2 (en) 2014-04-08 2016-09-06 Incuvate, Llc Systems and methods for management of thrombosis
US9474564B2 (en) 2005-03-31 2016-10-25 Covidien Ag Method and system for compensating for external impedance of an energy carrying component when controlling an electrosurgical generator
US9545337B2 (en) 2013-03-15 2017-01-17 Novartis Ag Acoustic streaming glaucoma drainage device
US9549850B2 (en) 2013-04-26 2017-01-24 Novartis Ag Partial venting system for occlusion surge mitigation
US9561321B2 (en) 2011-12-08 2017-02-07 Alcon Research, Ltd. Selectively moveable valve elements for aspiration and irrigation circuits
US9636165B2 (en) 2013-07-29 2017-05-02 Covidien Lp Systems and methods for measuring tissue impedance through an electrosurgical cable
US9693896B2 (en) 2013-03-15 2017-07-04 Novartis Ag Systems and methods for ocular surgery
US9750638B2 (en) 2013-03-15 2017-09-05 Novartis Ag Systems and methods for ocular surgery
US9872719B2 (en) 2013-07-24 2018-01-23 Covidien Lp Systems and methods for generating electrosurgical energy using a multistage power converter
US9883877B2 (en) 2014-05-19 2018-02-06 Walk Vascular, Llc Systems and methods for removal of blood and thrombotic material
US9915274B2 (en) 2013-03-15 2018-03-13 Novartis Ag Acoustic pumps and systems
US9962288B2 (en) 2013-03-07 2018-05-08 Novartis Ag Active acoustic streaming in hand piece for occlusion surge mitigation
US9999710B2 (en) 2009-01-07 2018-06-19 Med-Logics, Inc. Tissue removal devices, systems and methods
US10182940B2 (en) 2012-12-11 2019-01-22 Novartis Ag Phacoemulsification hand piece with integrated aspiration and irrigation pump
US10226263B2 (en) 2015-12-23 2019-03-12 Incuvate, Llc Aspiration monitoring system and method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2855945A (en) * 1953-02-07 1958-10-14 Gratzmuller Jean Louis Flow-rate responsive switching-valve for hydraulic circuits
US3526219A (en) * 1967-07-21 1970-09-01 Ultrasonic Systems Method and apparatus for ultrasonically removing tissue from a biological organism
US3528410A (en) * 1968-09-16 1970-09-15 Surgical Design Corp Ultrasonic method for retinal attachment
US3532104A (en) * 1968-01-24 1970-10-06 Kenneth H Hoen Pressure compensated flow control valve system
US3581760A (en) * 1969-02-14 1971-06-01 Benjamin W West Valve
US3589363A (en) * 1967-07-25 1971-06-29 Cavitron Corp Material removal apparatus and method employing high frequency vibrations

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2855945A (en) * 1953-02-07 1958-10-14 Gratzmuller Jean Louis Flow-rate responsive switching-valve for hydraulic circuits
US3526219A (en) * 1967-07-21 1970-09-01 Ultrasonic Systems Method and apparatus for ultrasonically removing tissue from a biological organism
US3589363A (en) * 1967-07-25 1971-06-29 Cavitron Corp Material removal apparatus and method employing high frequency vibrations
US3532104A (en) * 1968-01-24 1970-10-06 Kenneth H Hoen Pressure compensated flow control valve system
US3528410A (en) * 1968-09-16 1970-09-15 Surgical Design Corp Ultrasonic method for retinal attachment
US3581760A (en) * 1969-02-14 1971-06-01 Benjamin W West Valve

Cited By (360)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3736938A (en) * 1971-11-15 1973-06-05 Nasa Ophthalmic method and apparatus
US3812855A (en) * 1971-12-15 1974-05-28 Surgical Design Corp System for controlling fluid and suction pressure
US3818913A (en) * 1972-08-30 1974-06-25 M Wallach Surgical apparatus for removal of tissue
US3927675A (en) * 1972-11-16 1975-12-23 Reimar Pohlman Device for fragmenting urinary calculus
US3902495A (en) * 1974-01-28 1975-09-02 Cavitron Corp Flow control system
US3955574A (en) * 1974-12-09 1976-05-11 Rubinstein Morton K Pumping system for catheter suction units
US4056855A (en) * 1976-04-07 1977-11-08 Charles Kelman Intraocular lens and method of implanting same
FR2383649A1 (en) * 1977-03-15 1978-10-13 Fibra Sonics Apparatus and ultrasonic medico-surgical system
US4180074A (en) * 1977-03-15 1979-12-25 Fibra-Sonics, Inc. Device and method for applying precise irrigation, aspiration, medication, ultrasonic power and dwell time to biotissue for surgery and treatment
US4215476A (en) * 1977-03-25 1980-08-05 Armstrong Alexander S Health services combination irrigator and aspirator
US4223676A (en) * 1977-12-19 1980-09-23 Cavitron Corporation Ultrasonic aspirator
US4332558A (en) * 1980-05-20 1982-06-01 Lustig Leopold P Dental scaling apparatus
US4516398A (en) * 1980-10-08 1985-05-14 Cooper Lasersonics, Inc. Method of use of an ultrasonic surgical pre-aspirator having a orifice by-pass
US4921476A (en) * 1980-10-08 1990-05-01 Cavitron, Inc. Method for preventing clogging of a surgical aspirator
US4493694A (en) * 1980-10-17 1985-01-15 Cooper Lasersonics, Inc. Surgical pre-aspirator
US4561438A (en) * 1982-03-04 1985-12-31 Richard Wolf Gmbh Piezoelectric transducer with curved shafts
DE3247124A1 (en) * 1982-04-13 1983-10-20 Go G Med Inst Im S M Kirova Go A device for destruction and aspiration of the eye tissue
US4526571A (en) * 1982-10-15 1985-07-02 Cooper Lasersonics, Inc. Curved ultrasonic surgical aspirator
JPS6136254Y2 (en) * 1982-12-09 1986-10-21
JPS5993414U (en) * 1982-12-09 1984-06-25
US4530356A (en) * 1983-02-08 1985-07-23 Helfgott Maxwell A Ophthalmic surgical instrument with beveled tip
EP0139753A1 (en) * 1983-04-04 1985-05-08 Sumitomo Bakelite Company Limited Ultrasonic oscillator
EP0139753A4 (en) * 1983-04-04 1986-11-20 Sumitomo Bakelite Co Ultrasonic oscillator.
US4515583A (en) * 1983-10-17 1985-05-07 Coopervision, Inc. Operative elliptical probe for ultrasonic surgical instrument and method of its use
FR2571622A1 (en) * 1984-10-15 1986-04-18 France Chirurgie Instr Ocular micro-inhaler
JPS61179150A (en) * 1984-10-31 1986-08-11 United Sonitsukusu Inc Cell plasma removing apparatus in tissue
US4838281A (en) * 1985-02-28 1989-06-13 Alcon Laboratories, Inc. Linear suction control system
EP0226622A4 (en) * 1985-06-05 1988-08-23 Coopervision Inc Connecting fitting of a fluid flow control system.
EP0494094A2 (en) * 1985-06-05 1992-07-08 Nestle S.A. Fluid flow control system and connecting fitting therefor
US4832685A (en) * 1985-06-05 1989-05-23 Coopervision, Inc. Fluid flow control system and connecting fitting therefor
US4935005A (en) * 1985-06-05 1990-06-19 Nestle, S.A. Opthalmic fluid flow control system
EP0494094A3 (en) * 1985-06-05 1992-10-07 Nestle S.A. Fluid flow control system and connecting fitting therefor
EP0226622A1 (en) * 1985-06-05 1987-07-01 Nestle S.A. Connecting fitting of a fluid flow control system
JPH0562544B2 (en) * 1985-08-28 1993-09-08 Valleylab Inc
US4750902A (en) * 1985-08-28 1988-06-14 Sonomed Technology, Inc. Endoscopic ultrasonic aspirators
JPS63500850A (en) * 1985-08-28 1988-03-31
US5334183A (en) * 1985-08-28 1994-08-02 Valleylab, Inc. Endoscopic electrosurgical apparatus
US4643717A (en) * 1985-09-16 1987-02-17 Site Microsurgical Systems, Inc. Aspiration fitting adaptor
JPS63501845A (en) * 1985-12-13 1988-07-28
JPH0367411B2 (en) * 1985-12-13 1991-10-22 Kuupaa Rezaasonitsukusu Inc
US4634419A (en) * 1985-12-13 1987-01-06 Cooper Lasersonics, Inc. Angulated ultrasonic surgical handpieces and method for their production
WO1987003467A1 (en) * 1985-12-13 1987-06-18 Cooper Lasersonics, Inc. Angulated ultrasonic surgical handpieces
US4681561A (en) * 1986-01-24 1987-07-21 Coopervision, Inc. Ultrasonic decoupling sleeve
US4816017A (en) * 1986-01-24 1989-03-28 Coopervision, Inc. Ultrasonic decoupling sleeve
WO1987004335A1 (en) 1986-01-24 1987-07-30 Coopervision, Inc. Ultrasonic decoupling sleeve
US5533389A (en) * 1986-03-04 1996-07-09 Deka Products Limited Partnership Method and system for measuring volume and controlling flow
US5526844A (en) * 1986-03-04 1996-06-18 Deka Products Limited Partnership Flow conrol system
US5349852A (en) * 1986-03-04 1994-09-27 Deka Products Limited Partnership Pump controller using acoustic spectral analysis
US5575310A (en) * 1986-03-04 1996-11-19 Deka Products Limited Partnership Flow control system with volume-measuring system using a resonatable mass
US4827911A (en) * 1986-04-02 1989-05-09 Cooper Lasersonics, Inc. Method and apparatus for ultrasonic surgical fragmentation and removal of tissue
US4922902A (en) * 1986-05-19 1990-05-08 Valleylab, Inc. Method for removing cellular material with endoscopic ultrasonic aspirator
US4750488A (en) * 1986-05-19 1988-06-14 Sonomed Technology, Inc. Vibration apparatus preferably for endoscopic ultrasonic aspirator
US5157603A (en) * 1986-11-06 1992-10-20 Storz Instrument Company Control system for ophthalmic surgical instruments
US5455766A (en) * 1986-11-06 1995-10-03 Storz Instrument Company Control system for ophthalmic surgical instruments
US5139504A (en) * 1987-05-01 1992-08-18 Ophthalmocare, Inc. Apparatus, system, and method for softening and extracting cataractous tissue
US5057098A (en) * 1987-05-01 1991-10-15 Ophthalmocare, Inc. Apparatus and method for extracting cataract tissue
US4825865A (en) * 1987-05-01 1989-05-02 Jerry Zelman Apparatus and method for extracting cataract tissue
US5015227A (en) * 1987-09-30 1991-05-14 Valleylab Inc. Apparatus for providing enhanced tissue fragmentation and/or hemostasis
US4931047A (en) * 1987-09-30 1990-06-05 Cavitron, Inc. Method and apparatus for providing enhanced tissue fragmentation and/or hemostasis
US4921477A (en) * 1987-10-14 1990-05-01 The Cooper Companies, Inc. Surgical irrigation and aspiration system with dampening device
WO1989003230A1 (en) * 1987-10-14 1989-04-20 The Cooper Companies, Inc. Surgical irrigation and aspiration system
US5011471A (en) * 1987-12-24 1991-04-30 Sumitomo Bakelite Company Limited Excretions treating apparatus
US5125837A (en) * 1988-01-06 1992-06-30 Dentsply Management Corp. Apparatus and method for therapeutic lavage and scaling of teeth
US5419703A (en) * 1988-02-18 1995-05-30 Dentsply Research & Development Corp. Method of subgingival scaling and lavage
US4869715A (en) * 1988-04-21 1989-09-26 Sherburne Fred S Ultrasonic cone and method of construction
US4897079A (en) * 1988-07-22 1990-01-30 Allergan, Inc. Polymeric sleeve for surgical instruments
US4989583A (en) * 1988-10-21 1991-02-05 Nestle S.A. Ultrasonic cutting tip assembly
US5359996A (en) * 1988-10-21 1994-11-01 Nestle, S.A. Ultrasonic cutting tip and assembly
AU609652B2 (en) * 1988-12-20 1991-05-02 Sherwood Services Ag Improved resonator for surgical handpiece
US5382251A (en) * 1989-01-31 1995-01-17 Biomet, Inc. Plug pulling method
US5318570A (en) * 1989-01-31 1994-06-07 Advanced Osseous Technologies, Inc. Ultrasonic tool
US5456686A (en) * 1989-01-31 1995-10-10 Biomet, Inc. Implantation and removal of orthopedic prostheses
US5324297A (en) * 1989-01-31 1994-06-28 Advanced Osseous Technologies, Inc. Ultrasonic tool connector
US5255669A (en) * 1989-04-12 1993-10-26 Olympus Optical Co., Ltd. Ultrasonic treatment apparatus
US5549139A (en) * 1989-10-27 1996-08-27 Storz Instrument Company Pneumatic controls for ophthalmic surgical system
US5857485A (en) * 1989-10-27 1999-01-12 Perkins; James T. Pneumatic controls for ophthalmic surgical system
US5979494A (en) * 1989-10-27 1999-11-09 Bausch & Lomb Surgical, Inc. Pneumatic controls for ophthalmic surgical system
US5284484A (en) * 1990-02-06 1994-02-08 Advanced Osseous Technologies, Inc. Apparatus for implantation and extraction of osteal prostheses
US5112300A (en) * 1990-04-03 1992-05-12 Alcon Surgical, Inc. Method and apparatus for controlling ultrasonic fragmentation of body tissue
US5112339A (en) * 1990-06-18 1992-05-12 Ophthalmocare, Inc. Apparatus for extracting cataractous tissue
US5827292A (en) * 1990-07-17 1998-10-27 Anis; Aziz Yehia Removal of tissue
US5722945A (en) * 1990-07-17 1998-03-03 Aziz Yehia Anis Removal of tissue
US6352519B1 (en) 1990-07-17 2002-03-05 Aziz Yehia Anis Removal of tissue
EP0484050A1 (en) * 1990-10-26 1992-05-06 Alcon Surgical, Inc., System and apparatus for controlling fluid flow to and from a surgical site
US5261883A (en) * 1990-10-26 1993-11-16 Alcon Surgical, Inc. Portable apparatus for controlling fluid flow to a surgical site
AU642778B2 (en) * 1990-10-26 1993-10-28 Alcon Surgical, Inc. System and apparatus for controlling fluid flow to and from a surgical site
US5190517A (en) * 1991-06-06 1993-03-02 Valleylab Inc. Electrosurgical and ultrasonic surgical system
US5185002A (en) * 1991-06-28 1993-02-09 Alcon Surgical, Inc. Transducer apparatus having water hammer dampening means
US5580347A (en) * 1991-07-31 1996-12-03 Mentor Ophthalmics, Inc. Controlling operation of handpieces during ophthalmic surgery
EP0596967A1 (en) * 1991-07-31 1994-05-18 Mentor O & O Inc. Controlling operation of handpieces during ophthalmic surgery
EP0596967A4 (en) * 1991-07-31 1994-10-19 Mentor O & O Inc Controlling operation of handpieces during ophthalmic surgery.
US5188589A (en) * 1991-10-10 1993-02-23 Alcon Surgical, Inc. Textured irrigating sleeve
US5199943A (en) * 1991-12-12 1993-04-06 Alcon Surgical, Inc. Ultrasonic surgical handpiece
US5429601A (en) * 1992-02-12 1995-07-04 American Cyanamid Company Aspiration control system
FR2691624A1 (en) * 1992-05-29 1993-12-03 Medicamat Promotion Diffusion Ultrasonic vibrator for curetting of biological tissue - uses three pipes one for irrigation, one for aspiration and other for air input.
US5370602A (en) * 1992-09-04 1994-12-06 American Cyanamid Company Phacoemulsification probe circuit with pulse width Modulating drive
US5560247A (en) * 1992-09-16 1996-10-01 Honda Giken Kogyo Kabushiki Kaisha Exhaust gas sampling device for outboard motor
US5360398A (en) * 1992-11-06 1994-11-01 Grieshaber & Co. Ag Schaffhausen Ophthalmological aspiration and irrigation system
US5403276A (en) * 1993-02-16 1995-04-04 Danek Medical, Inc. Apparatus for minimally invasive tissue removal
US5342293A (en) * 1993-06-22 1994-08-30 Allergan, Inc. Variable vacuum/variable flow phacoemulsification method
US5464389A (en) * 1993-08-10 1995-11-07 Stahl; Norman O. Working tip for fragmenting and aspirating ocular tissue
US5795328A (en) * 1994-10-28 1998-08-18 Iolab Corporation Vacuum system and a method of operating a vacuum system
US5624394A (en) * 1994-10-28 1997-04-29 Iolab Corporation Vacuum system and a method of operating a vacuum system
US5928218A (en) * 1994-12-16 1999-07-27 Gelbfish; Gary A. Medical material removal method and associated instrumentation
US5730717A (en) * 1994-12-16 1998-03-24 Gelbfish; Gary A. Method and associated device for removing material from body
US7011644B1 (en) 1995-02-06 2006-03-14 Andrew Mark S Tissue liquefaction and aspiration for dental treatment
US6676629B2 (en) 1995-02-06 2004-01-13 Mark S. Andrew Tissue liquefaction and aspiration for dental treatment
USRE43617E1 (en) 1995-02-06 2012-08-28 Andrew Mark S Tissue liquefaction and aspiration
WO1996024314A1 (en) 1995-02-06 1996-08-15 Mark Andrew Method and apparatus for lenticular liquefaction and aspiration
US6074358A (en) * 1995-02-06 2000-06-13 Andrew; Mark S. Method and apparatus for lenticular liquefaction and aspiration
US6544211B1 (en) 1995-02-06 2003-04-08 Mark S. Andrew Tissue liquefaction and aspiration
US5616120A (en) * 1995-02-06 1997-04-01 Andrew; Mark S. Method and apparatus for lenticular liquefaction and aspiration
US5810766A (en) * 1995-02-28 1998-09-22 Chiron Vision Corporation Infusion/aspiration apparatus with removable cassette
US5569188A (en) * 1995-04-11 1996-10-29 Mackool; Richard J. Apparatus for controlling fluid flow through a surgical instrument and the temperature of an ultrasonic instrument
US5910110A (en) * 1995-06-07 1999-06-08 Mentor Ophthalmics, Inc. Controlling pressure in the eye during surgery
US5830176A (en) * 1995-12-26 1998-11-03 Mackool; Richard J. Maintenance of pressure within a surgical site during a surgical procedure
US5984889A (en) * 1996-02-23 1999-11-16 Allergan Sales, Inc. Apparatus and method for delivering viscoelastic material to an eye
US5766146A (en) * 1996-04-04 1998-06-16 Allergan Method of infusion control during phacoemulsification surgery
WO1997037700A1 (en) * 1996-04-04 1997-10-16 Allergan Sales, Inc. Method of infusion control during phacoemulsification surgery
US5833643A (en) * 1996-06-07 1998-11-10 Scieran Technologies, Inc. Apparatus for performing ophthalmic procedures
US5788679A (en) * 1996-06-26 1998-08-04 Gravlee, Jr.; Joseph F. Phacoemulsification needle
US5733266A (en) * 1996-07-26 1998-03-31 Gravlee, Jr.; Joseph F. Hypodermic needle
US5984904A (en) * 1996-08-22 1999-11-16 Bausch & Lomb Surgical, Inc. Sleeve for a surgical instrument
US6251113B1 (en) 1996-08-29 2001-06-26 Bausch & Lomb Surgical, Inc. Ophthalmic microsurgical system employing surgical module employing flash EEPROM and reprogrammable modules
US5910139A (en) * 1996-08-29 1999-06-08 Storz Instrument Co. Numeric keypad simulated on touchscreen
US5997528A (en) * 1996-08-29 1999-12-07 Bausch & Lomb Surgical, Inc. Surgical system providing automatic reconfiguration
US6086576A (en) * 1996-08-29 2000-07-11 Bausch & Lomb Surgical, Inc. Automatically switching the termination of a communications bus
US6106512A (en) * 1996-08-29 2000-08-22 Bausch & Lomb Surgical, Inc. Numeric keypad simulated on touchscreen
US6117126A (en) * 1996-08-29 2000-09-12 Bausch & Lomb Surgical, Inc. Surgical module with independent microprocessor-based communication
US6203516B1 (en) 1996-08-29 2001-03-20 Bausch & Lomb Surgical, Inc. Phacoemulsification device and method for using dual loop frequency and power control
US5941887A (en) * 1996-09-03 1999-08-24 Bausch & Lomb Surgical, Inc. Sleeve for a surgical instrument
US6030212A (en) * 1996-09-27 2000-02-29 Dentsply Research & Development Corp. Stacking reservoir and scaler system
US6293793B1 (en) 1996-09-27 2001-09-25 Dentsply Research & Development Corp. Stackable reservoir and scaler system
USRE40388E1 (en) 1997-04-09 2008-06-17 Covidien Ag Electrosurgical generator with adaptive power control
US6126668A (en) * 1997-04-25 2000-10-03 Innovative Optics, Inc. Microkeratome
US6055458A (en) * 1997-08-28 2000-04-25 Bausch & Lomb Surgical, Inc. Modes/surgical functions
US6258111B1 (en) 1997-10-03 2001-07-10 Scieran Technologies, Inc. Apparatus and method for performing ophthalmic procedures
US6013048A (en) * 1997-11-07 2000-01-11 Mentor Corporation Ultrasonic assisted liposuction system
US6159176A (en) * 1997-12-11 2000-12-12 Sonics & Materials Inc. Sheath and support for ultrasonic elongate tip
US7909792B2 (en) 1998-03-10 2011-03-22 Abbott Medical Optics Inc. Phaco thermal control system
EP1905401A3 (en) * 1998-03-10 2011-04-13 Abbott Medical Optics Inc. Temperature controller and method for phacoemulsification
WO1999045868A1 (en) * 1998-03-10 1999-09-16 Allergan Sales, Inc. Temperature controler and method for phacoemulsification
US6083193A (en) * 1998-03-10 2000-07-04 Allergan Sales, Inc. Thermal mode phaco apparatus and method
US8308676B2 (en) 1998-03-10 2012-11-13 Abbott Medical Optics Inc. Phaco thermal control apparatus and method
US6261297B1 (en) * 1998-03-10 2001-07-17 Allergan Sales, Inc. Thermal mode phaco apparatus and method
US20110166505A1 (en) * 1998-03-10 2011-07-07 Abbott Medical Optics Inc Phaco thermal control apparatus and method
US8764699B2 (en) 1998-03-10 2014-07-01 Abbott Medical Optics Inc. Phaco thermal control apparatus and method
US20110166504A1 (en) * 1998-03-10 2011-07-07 Abbott Medical Optics Inc Phaco thermal control apparatus and method
US20040082902A1 (en) * 1998-03-10 2004-04-29 Kadziauskas Kenneth E. Phaco thermal control apparatus and method
US6358260B1 (en) 1998-04-20 2002-03-19 Med-Logics, Inc. Automatic corneal shaper with two separate drive mechanisms
US6283937B1 (en) * 1998-06-30 2001-09-04 Nidek Co. Ltd. Irrigation/aspiration apparatus
US8105323B2 (en) 1998-10-23 2012-01-31 Covidien Ag Method and system for controlling output of RF medical generator
US7137980B2 (en) 1998-10-23 2006-11-21 Sherwood Services Ag Method and system for controlling output of RF medical generator
US9168089B2 (en) 1998-10-23 2015-10-27 Covidien Ag Method and system for controlling output of RF medical generator
US9113900B2 (en) 1998-10-23 2015-08-25 Covidien Ag Method and system for controlling output of RF medical generator
US7303557B2 (en) 1998-10-23 2007-12-04 Sherwood Services Ag Vessel sealing system
US7901400B2 (en) 1998-10-23 2011-03-08 Covidien Ag Method and system for controlling output of RF medical generator
US8287528B2 (en) 1998-10-23 2012-10-16 Covidien Ag Vessel sealing system
US6599271B1 (en) 1999-04-13 2003-07-29 Syntec, Inc. Ophthalmic flow converter
WO2000074615A2 (en) 1999-06-04 2000-12-14 Alcon Universal Ltd. Phaco-emulsification needle
US6702832B2 (en) 1999-07-08 2004-03-09 Med Logics, Inc. Medical device for cutting a cornea that has a vacuum ring with a slitted vacuum opening
US6699285B2 (en) 1999-09-24 2004-03-02 Scieran Technologies, Inc. Eye endoplant for the reattachment of a retina
US6428508B1 (en) 2000-02-01 2002-08-06 Enlighten Technologies, Inc. Pulsed vacuum cataract removal system
US6663644B1 (en) 2000-06-02 2003-12-16 Med-Logics, Inc. Cutting blade assembly for a microkeratome
US6425905B1 (en) 2000-11-29 2002-07-30 Med-Logics, Inc. Method and apparatus for facilitating removal of a corneal graft
US7311700B2 (en) 2000-11-29 2007-12-25 Med-Logics, Inc. LASIK laminar flow system
US20020173695A1 (en) * 2001-05-16 2002-11-21 Mikhail Skliar Physiologically-based control system and method for using the same
US6579255B2 (en) * 2001-07-31 2003-06-17 Advanced Medical Optics, Inc. Pressurized flow of fluid into the eye using pump and pressure measurement system
US7012203B2 (en) 2001-09-07 2006-03-14 Carl Zeiss Surgical Gmbh Foot switch pedal controller for a surgical instrument
US20030047434A1 (en) * 2001-09-07 2003-03-13 Hanson Michael R. Foot switch pedal controller for a surgical instrument
US7364577B2 (en) 2002-02-11 2008-04-29 Sherwood Services Ag Vessel sealing system
US7749217B2 (en) 2002-05-06 2010-07-06 Covidien Ag Method and system for optically detecting blood and controlling a generator during electrosurgery
US8523855B2 (en) 2002-12-10 2013-09-03 Covidien Ag Circuit for controlling arc energy from an electrosurgical generator
US7255694B2 (en) 2002-12-10 2007-08-14 Sherwood Services Ag Variable output crest factor electrosurgical generator
US7824400B2 (en) 2002-12-10 2010-11-02 Covidien Ag Circuit for controlling arc energy from an electrosurgical generator
US7044948B2 (en) 2002-12-10 2006-05-16 Sherwood Services Ag Circuit for controlling arc energy from an electrosurgical generator
US8080008B2 (en) 2003-05-01 2011-12-20 Covidien Ag Method and system for programming and controlling an electrosurgical generator system
US8303580B2 (en) 2003-05-01 2012-11-06 Covidien Ag Method and system for programming and controlling an electrosurgical generator system
US8012150B2 (en) 2003-05-01 2011-09-06 Covidien Ag Method and system for programming and controlling an electrosurgical generator system
US8267929B2 (en) 2003-05-01 2012-09-18 Covidien Ag Method and system for programming and controlling an electrosurgical generator system
US8298223B2 (en) 2003-05-01 2012-10-30 Covidien Ag Method and system for programming and controlling an electrosurgical generator system
US7722601B2 (en) 2003-05-01 2010-05-25 Covidien Ag Method and system for programming and controlling an electrosurgical generator system
US8104956B2 (en) 2003-10-23 2012-01-31 Covidien Ag Thermocouple measurement circuit
US8647340B2 (en) 2003-10-23 2014-02-11 Covidien Ag Thermocouple measurement system
US8808161B2 (en) 2003-10-23 2014-08-19 Covidien Ag Redundant temperature monitoring in electrosurgical systems for safety mitigation
US8113057B2 (en) 2003-10-30 2012-02-14 Covidien Ag Switched resonant ultrasonic power amplifier system
US9768373B2 (en) 2003-10-30 2017-09-19 Covidien Ag Switched resonant ultrasonic power amplifier system
US8485993B2 (en) 2003-10-30 2013-07-16 Covidien Ag Switched resonant ultrasonic power amplifier system
US8966981B2 (en) 2003-10-30 2015-03-03 Covidien Ag Switched resonant ultrasonic power amplifier system
US8096961B2 (en) 2003-10-30 2012-01-17 Covidien Ag Switched resonant ultrasonic power amplifier system
US7396336B2 (en) 2003-10-30 2008-07-08 Sherwood Services Ag Switched resonant ultrasonic power amplifier system
US7131860B2 (en) 2003-11-20 2006-11-07 Sherwood Services Ag Connector systems for electrosurgical generator
US7766693B2 (en) 2003-11-20 2010-08-03 Covidien Ag Connector systems for electrosurgical generator
US7416437B2 (en) 2003-11-20 2008-08-26 Sherwood Services Ag Connector systems for electrosurgical generator
US7300435B2 (en) 2003-11-21 2007-11-27 Sherwood Services Ag Automatic control system for an electrosurgical generator
US7766905B2 (en) 2004-02-12 2010-08-03 Covidien Ag Method and system for continuity testing of medical electrodes
US7780662B2 (en) 2004-03-02 2010-08-24 Covidien Ag Vessel sealing system using capacitive RF dielectric heating
US20050267504A1 (en) * 2004-03-22 2005-12-01 Alcon, Inc. Method of controlling a surgical system based on irrigation flow
US7645255B2 (en) 2004-03-22 2010-01-12 Alcon, Inc. Method of controlling a surgical system based on irrigation flow
US20050261715A1 (en) * 2004-03-22 2005-11-24 Alcon, Inc. Method of controlling a surgical system based on a load on the cutting tip of a handpiece
US20050277869A1 (en) * 2004-03-22 2005-12-15 Alcon, Inc. Method of operating an ultrasound handpiece
US8048020B2 (en) 2004-03-22 2011-11-01 Alcon, Inc. Method of controlling a surgical system based on irrigation flow
US9282989B2 (en) 2004-03-22 2016-03-15 Novartis Ag Method of controlling a surgical system based on a load on the cutting tip of a handpiece
US20050209560A1 (en) * 2004-03-22 2005-09-22 Alcon, Inc. Method of controlling a surgical system based on a rate of change of an operating parameter
US8172786B2 (en) 2004-03-22 2012-05-08 Alcon Research, Ltd. Method of operating an ultrasound handpiece
US7625388B2 (en) 2004-03-22 2009-12-01 Alcon, Inc. Method of controlling a surgical system based on a load on the cutting tip of a handpiece
US20110015563A1 (en) * 2004-03-22 2011-01-20 Alcon, Inc. Method Of Controlling A Surgical System Based On A Rate Of Change Of An Operating Parameter
US20050209561A1 (en) * 2004-03-22 2005-09-22 Raphael Gordon Method of detecting surgical events
US20050261628A1 (en) * 2004-03-22 2005-11-24 Alcon, Inc. Method of controlling a surgical system based on a rate of change of an operating parameter
US20090306583A1 (en) * 2004-03-22 2009-12-10 Mikhail Boukhny Method of Operating An Ultrasound Handpiece
US20050228425A1 (en) * 2004-03-22 2005-10-13 Alcon, Inc. Method of controlling a surgical system based on a load on the cutting tip of a handpiece
US20100130914A1 (en) * 2004-03-22 2010-05-27 Alcon, Inc. Method Of Controlling A Surgical System Based On Irrigation Flow
US7727193B2 (en) 2004-03-22 2010-06-01 Alcon, Inc. Method of controlling a surgical system based on a rate of change of an operating parameter
US8430838B2 (en) 2004-03-22 2013-04-30 Novartis Ag Method of controlling a surgical system based on irrigation flow
US8974412B2 (en) 2004-03-22 2015-03-10 Novartis Ag Method of controlling a surgical system based on a load on the cutting tip of a handpiece
US7713202B2 (en) 2004-03-22 2010-05-11 Alcon, Inc. Method of controlling a surgical system based on a load on the cutting tip of a handpiece
US7758538B2 (en) 2004-03-22 2010-07-20 Alcon, Inc. Method of controlling a surgical system based on irrigation flow
US7811255B2 (en) 2004-03-22 2010-10-12 Alcon, Inc. Method of controlling a surgical system based on a rate of change of an operating parameter
US7572242B2 (en) 2004-03-22 2009-08-11 Alcon, Inc. Method of operating an ultrasound handpiece
US8403851B2 (en) 2004-03-22 2013-03-26 Novartis Ag Method of controlling a surgical system based on a load on the cutting tip of a handpiece
US8523812B2 (en) 2004-03-22 2013-09-03 Alcon Research, Ltd. Method of controlling a surgical system based on a rate of change of an operating parameter
US8257307B2 (en) 2004-03-22 2012-09-04 Alcon Research, Ltd. Method of controlling a surgical system based on a load on the cutting tip of a handpiece
US20100036387A1 (en) * 2004-03-29 2010-02-11 Claudio Bucolo Viscoelastic Composition for Surgical Procedures
US20060002982A1 (en) * 2004-06-30 2006-01-05 Bausch & Lomb Incorporated Xanthan gum viscoelastic composition, method of use and package
US7645256B2 (en) 2004-08-12 2010-01-12 Alcon, Inc. Ultrasound handpiece
US8771301B2 (en) 2004-08-12 2014-07-08 Alcon Research, Ltd. Ultrasonic handpiece
US20100004585A1 (en) * 2004-08-12 2010-01-07 Mikhail Boukhny Ultrasonic Handpiece
US7651490B2 (en) 2004-08-12 2010-01-26 Alcon, Inc. Ultrasonic handpiece
US8814894B2 (en) 2004-08-12 2014-08-26 Novartis Ag Ultrasound handpiece
US20060036180A1 (en) * 2004-08-12 2006-02-16 Mikhail Boukhny Ultrasonic handpiece
US20060041220A1 (en) * 2004-08-12 2006-02-23 Alcon, Inc. Ultrasound handpiece
US20060073184A1 (en) * 2004-09-29 2006-04-06 Bausch & Lomb Inc. Viscoelastic composition, methods of use and packaging device with anti-oxidant
US20060078448A1 (en) * 2004-10-11 2006-04-13 Holden Hugo R Phacoemulsification machine with post-occlusion surge control system and related method
US7628786B2 (en) 2004-10-13 2009-12-08 Covidien Ag Universal foot switch contact port
US8025660B2 (en) 2004-10-13 2011-09-27 Covidien Ag Universal foot switch contact port
US20060161101A1 (en) * 2005-01-18 2006-07-20 Alcon, Inc. Surgical system and handpiece
US20060182296A1 (en) * 2005-02-11 2006-08-17 Natan Bauman Ultrasonic ear wax cleaning system
US20060212037A1 (en) * 2005-03-16 2006-09-21 Alcon, Inc. Pumping chamber for a liquefaction handpiece
US7758585B2 (en) 2005-03-16 2010-07-20 Alcon, Inc. Pumping chamber for a liquefaction handpiece
US20060212039A1 (en) * 2005-03-16 2006-09-21 Alcon, Inc. Pumping chamber for a liquefaction handpiece
US9474564B2 (en) 2005-03-31 2016-10-25 Covidien Ag Method and system for compensating for external impedance of an energy carrying component when controlling an electrosurgical generator
US8734438B2 (en) 2005-10-21 2014-05-27 Covidien Ag Circuit and method for reducing stored energy in an electrosurgical generator
US9522032B2 (en) 2005-10-21 2016-12-20 Covidien Ag Circuit and method for reducing stored energy in an electrosurgical generator
US8241278B2 (en) 2005-12-12 2012-08-14 Covidien Ag Laparoscopic apparatus for performing electrosurgical procedures
US7947039B2 (en) 2005-12-12 2011-05-24 Covidien Ag Laparoscopic apparatus for performing electrosurgical procedures
US7972328B2 (en) 2006-01-24 2011-07-05 Covidien Ag System and method for tissue sealing
US8475447B2 (en) 2006-01-24 2013-07-02 Covidien Ag System and method for closed loop monitoring of monopolar electrosurgical apparatus
US8216223B2 (en) 2006-01-24 2012-07-10 Covidien Ag System and method for tissue sealing
US9642665B2 (en) 2006-01-24 2017-05-09 Covidien Ag Method and system for controlling an output of a radio-frequency medical generator having an impedance based control algorithm
US8147485B2 (en) 2006-01-24 2012-04-03 Covidien Ag System and method for tissue sealing
US8685016B2 (en) 2006-01-24 2014-04-01 Covidien Ag System and method for tissue sealing
US8267928B2 (en) 2006-01-24 2012-09-18 Covidien Ag System and method for closed loop monitoring of monopolar electrosurgical apparatus
US8202271B2 (en) 2006-01-24 2012-06-19 Covidien Ag Dual synchro-resonant electrosurgical apparatus with bi-directional magnetic coupling
US8187262B2 (en) 2006-01-24 2012-05-29 Covidien Ag Dual synchro-resonant electrosurgical apparatus with bi-directional magnetic coupling
US7927328B2 (en) 2006-01-24 2011-04-19 Covidien Ag System and method for closed loop monitoring of monopolar electrosurgical apparatus
US7513896B2 (en) 2006-01-24 2009-04-07 Covidien Ag Dual synchro-resonant electrosurgical apparatus with bi-directional magnetic coupling
US8663214B2 (en) 2006-01-24 2014-03-04 Covidien Ag Method and system for controlling an output of a radio-frequency medical generator having an impedance based control algorithm
US9186200B2 (en) 2006-01-24 2015-11-17 Covidien Ag System and method for tissue sealing
US7651493B2 (en) 2006-03-03 2010-01-26 Covidien Ag System and method for controlling electrosurgical snares
US7972332B2 (en) 2006-03-03 2011-07-05 Covidien Ag System and method for controlling electrosurgical snares
US7648499B2 (en) 2006-03-21 2010-01-19 Covidien Ag System and method for generating radio frequency energy
US9119624B2 (en) 2006-04-24 2015-09-01 Covidien Ag ARC based adaptive control system for an electrosurgical unit
US7651492B2 (en) 2006-04-24 2010-01-26 Covidien Ag Arc based adaptive control system for an electrosurgical unit
US8556890B2 (en) 2006-04-24 2013-10-15 Covidien Ag Arc based adaptive control system for an electrosurgical unit
US8753334B2 (en) 2006-05-10 2014-06-17 Covidien Ag System and method for reducing leakage current in an electrosurgical generator
US8034049B2 (en) 2006-08-08 2011-10-11 Covidien Ag System and method for measuring initial tissue impedance
US7731717B2 (en) 2006-08-08 2010-06-08 Covidien Ag System and method for controlling RF output during tissue sealing
US20080071263A1 (en) * 2006-09-19 2008-03-20 Sherwood Services Ag System and method for return electrode monitoring
US7637907B2 (en) 2006-09-19 2009-12-29 Covidien Ag System and method for return electrode monitoring
US8231616B2 (en) 2006-09-28 2012-07-31 Covidien Ag Transformer for RF voltage sensing
US7794457B2 (en) 2006-09-28 2010-09-14 Covidien Ag Transformer for RF voltage sensing
US20080172076A1 (en) * 2006-11-01 2008-07-17 Alcon, Inc. Ultrasound apparatus and method of use
US8579929B2 (en) 2006-12-08 2013-11-12 Alcon Research, Ltd. Torsional ultrasound hand piece that eliminates chatter
US20100324581A1 (en) * 2006-12-08 2010-12-23 Alcon, Inc. Torsional Ultrasound Hand Piece That Eliminates Chatter
US20080281253A1 (en) * 2007-05-10 2008-11-13 Injev Valentine P Method of Operating an Ultrasound Handpiece
US8303530B2 (en) 2007-05-10 2012-11-06 Novartis Ag Method of operating an ultrasound handpiece
US8777941B2 (en) 2007-05-10 2014-07-15 Covidien Lp Adjustable impedance electrosurgical electrodes
US7834484B2 (en) 2007-07-16 2010-11-16 Tyco Healthcare Group Lp Connection cable and method for activating a voltage-controlled generator
US7849875B2 (en) 2007-07-31 2010-12-14 Alcon, Inc. Check valve
US20090032123A1 (en) * 2007-07-31 2009-02-05 Bourne John M Check Valve
US8353905B2 (en) 2007-09-07 2013-01-15 Covidien Lp System and method for transmission of combined data stream
US8216220B2 (en) 2007-09-07 2012-07-10 Tyco Healthcare Group Lp System and method for transmission of combined data stream
US8512332B2 (en) 2007-09-21 2013-08-20 Covidien Lp Real-time arc control in electrosurgical generators
US9271790B2 (en) 2007-09-21 2016-03-01 Coviden Lp Real-time arc control in electrosurgical generators
US20090118663A1 (en) * 2007-11-05 2009-05-07 Advanced Medical Optics, Inc. Systems and methods for enhanced occlusion removal during ophthalmic surgery
US9492318B2 (en) * 2007-11-05 2016-11-15 Abbott Medical Optics Inc. Systems and methods for enhanced occlusion removal during ophthalmic surgery
WO2009076717A1 (en) * 2007-12-19 2009-06-25 Opto Global Holdings Pty. Ltd. Control flow devices, methods, and systems
US8579851B2 (en) * 2007-12-20 2013-11-12 Bausch & Lomb Incorporated Surgical system having means for isolating vacuum pump
US20090163852A1 (en) * 2007-12-20 2009-06-25 Cull Laurence J Surgical System Having Means for Isolating Vacuum Pump
JP2011507624A (en) * 2007-12-21 2011-03-10 ボシュ・アンド・ロム・インコーポレイテッドBausch & Lomb Incorporated Air filter for eye surgery system
US8061216B2 (en) 2007-12-21 2011-11-22 Bausch & Lomb Incorporated Aspiration flow mesurement system with flow signal air bubble filter
WO2009085925A1 (en) * 2007-12-21 2009-07-09 Bausch & Lomb Incorporated Air filter for ophthalmic surgical system
CN101902995B (en) 2007-12-21 2012-05-30 博士伦公司 Air filter for ophthalmic surgical system
US20090158812A1 (en) * 2007-12-21 2009-06-25 Ross Peter Jones Air filter for ophthalmic surgical system
KR101460396B1 (en) 2007-12-21 2014-11-10 보오슈 앤드 롬 인코포레이팃드 Air filter for ophthalmic surgical system
US8226639B2 (en) 2008-06-10 2012-07-24 Tyco Healthcare Group Lp System and method for output control of electrosurgical generator
US20100036256A1 (en) * 2008-08-08 2010-02-11 Mikhail Boukhny Offset ultrasonic hand piece
US20110144476A1 (en) * 2008-08-18 2011-06-16 The Brigham And Women's Hospital, Inc. Integrated Surgical Sampling Probe
WO2010021951A2 (en) 2008-08-18 2010-02-25 The Brigham And Women's Hospital, Inc. Integrated surgical sampling probe
US10022186B2 (en) 2008-08-28 2018-07-17 Covidien Lp Microwave antenna with cooled handle
US9707038B2 (en) 2008-08-28 2017-07-18 Covidien Lp Microwave antenna with cooled handle
US8795268B2 (en) 2008-08-28 2014-08-05 Covidien Lp Microwave antenna
US9375280B2 (en) 2008-08-28 2016-06-28 Covidien Lp Microwave antenna with cooling system
US8523854B2 (en) 2008-08-28 2013-09-03 Covidien Lp Microwave antenna
US9113932B1 (en) 2008-08-28 2015-08-25 Covidien Lp Microwave antenna with choke
US9198725B2 (en) 2008-08-28 2015-12-01 Covidien Lp Microwave antenna with choke
US8291933B2 (en) 2008-09-25 2012-10-23 Novartis Ag Spring-less check valve for a handpiece
US20100094321A1 (en) * 2008-10-10 2010-04-15 Takayuki Akahoshi Ultrasound Handpiece
US9510854B2 (en) 2008-10-13 2016-12-06 Boston Scientific Scimed, Inc. Thrombectomy catheter with control box having pressure/vacuum valve for synchronous aspiration and fluid irrigation
US20100094201A1 (en) * 2008-10-13 2010-04-15 Boston Scientific Scimed, Inc. Assisted aspiration catheter system
WO2010045178A1 (en) * 2008-10-13 2010-04-22 Boston Scientific Scimed, Inc. Assisted aspiration catheter system
US20100145302A1 (en) * 2008-12-08 2010-06-10 Cull Laurence J Flow control system based on leakage
CN102245222B (en) 2008-12-08 2014-05-07 博士伦公司 Flow control system based on leakage
WO2010077563A3 (en) * 2008-12-08 2010-09-10 Bausch & Lomb Incorporated Flow control system based on leakage
EP2379126B1 (en) 2008-12-08 2015-04-22 Bausch & Lomb Incorporated Flow control system based on leakage
US8162919B2 (en) 2008-12-08 2012-04-24 Bausch & Lomb Incorporated Flow control system based on leakage
CN102245222A (en) * 2008-12-08 2011-11-16 博士伦公司 Flow control system based on leakage
US20120089080A1 (en) * 2009-01-07 2012-04-12 Enlighten Technologies, Inc. Tissue removal devices, systems and methods
US20100191178A1 (en) * 2009-01-07 2010-07-29 Enlighten Technologies, Inc. Tissue removal devices, systems and methods
US9370611B2 (en) 2009-01-07 2016-06-21 Med-Logics, Inc. Tissue removal devices, systems and methods
US9999710B2 (en) 2009-01-07 2018-06-19 Med-Logics, Inc. Tissue removal devices, systems and methods
US8486061B2 (en) 2009-01-12 2013-07-16 Covidien Lp Imaginary impedance process monitoring and intelligent shut-off
US8992493B2 (en) 2009-03-13 2015-03-31 Atrium Medical Corporation Chest drainage systems and methods
US8882678B2 (en) 2009-03-13 2014-11-11 Atrium Medical Corporation Pleural drainage system and method of use
US9814807B2 (en) 2009-03-13 2017-11-14 Atrium Medical Corporation Chest drainage systems and methods
US9314599B2 (en) 2009-03-13 2016-04-19 Atrium Medical Corporation Pleural drainage system and method of use
US20110071415A1 (en) * 2009-03-13 2011-03-24 Atrium Medical Corporation Pleural drainage system and method of use
WO2010114976A1 (en) * 2009-04-01 2010-10-07 Prosolia, Inc. Method and system for surface sampling
US8324570B2 (en) 2009-04-01 2012-12-04 Prosolia, Inc. Method and system for surface sampling
US9233021B2 (en) 2009-07-01 2016-01-12 Alcon Research, Ltd. Phacoemulsification hook tip
US8623040B2 (en) 2009-07-01 2014-01-07 Alcon Research, Ltd. Phacoemulsification hook tip
US8070711B2 (en) 2009-12-09 2011-12-06 Alcon Research, Ltd. Thermal management algorithm for phacoemulsification system
US20110137232A1 (en) * 2009-12-09 2011-06-09 Alcon Research, Ltd. Thermal Management Algorithm For Phacoemulsification System
WO2011112291A1 (en) * 2010-03-12 2011-09-15 Atrium Medical Corporation Chest drainage systems and methods
US8784357B2 (en) 2010-09-15 2014-07-22 Alcon Research, Ltd. Phacoemulsification hand piece with two independent transducers
US9050171B2 (en) * 2010-10-04 2015-06-09 William J. Foster Small diameter fragmatome for minimally traumatic retained lens fragments removal
US20120083773A1 (en) * 2010-10-04 2012-04-05 Foster William J Small diameter fragmatome for minimally traumatic retained lens fragments removal
US8414605B2 (en) 2011-07-08 2013-04-09 Alcon Research, Ltd. Vacuum level control of power for phacoemulsification hand piece
US9561321B2 (en) 2011-12-08 2017-02-07 Alcon Research, Ltd. Selectively moveable valve elements for aspiration and irrigation circuits
US8852091B2 (en) 2012-04-04 2014-10-07 Alcon Research, Ltd. Devices, systems, and methods for pupil expansion
US20140074013A1 (en) * 2012-09-07 2014-03-13 Bausch & Lomb Incorporated Vibrating Surgical Device for Removal of Vitreous and Other Tissue
US9498377B2 (en) * 2012-09-07 2016-11-22 Bausch & Lomb Incorporated Vibrating surgical device for removal of vitreous and other tissue
US10182940B2 (en) 2012-12-11 2019-01-22 Novartis Ag Phacoemulsification hand piece with integrated aspiration and irrigation pump
USD698019S1 (en) 2013-03-05 2014-01-21 Alcon Research, Ltd. Ophthalmic surgical cassette
US9962288B2 (en) 2013-03-07 2018-05-08 Novartis Ag Active acoustic streaming in hand piece for occlusion surge mitigation
US9915274B2 (en) 2013-03-15 2018-03-13 Novartis Ag Acoustic pumps and systems
US9750638B2 (en) 2013-03-15 2017-09-05 Novartis Ag Systems and methods for ocular surgery
US9693896B2 (en) 2013-03-15 2017-07-04 Novartis Ag Systems and methods for ocular surgery
US9545337B2 (en) 2013-03-15 2017-01-17 Novartis Ag Acoustic streaming glaucoma drainage device
US9549850B2 (en) 2013-04-26 2017-01-24 Novartis Ag Partial venting system for occlusion surge mitigation
US9872719B2 (en) 2013-07-24 2018-01-23 Covidien Lp Systems and methods for generating electrosurgical energy using a multistage power converter
US9636165B2 (en) 2013-07-29 2017-05-02 Covidien Lp Systems and methods for measuring tissue impedance through an electrosurgical cable
US9655670B2 (en) 2013-07-29 2017-05-23 Covidien Lp Systems and methods for measuring tissue impedance through an electrosurgical cable
US9895473B2 (en) 2014-04-08 2018-02-20 Incuvate, Llc Aspiration monitoring system and method
US9913936B2 (en) 2014-04-08 2018-03-13 Incuvate, Llc Systems and methods for management of thrombosis
US9433427B2 (en) 2014-04-08 2016-09-06 Incuvate, Llc Systems and methods for management of thrombosis
US10192230B2 (en) 2014-04-08 2019-01-29 Incuvate, Llc Systems and methods for management of thrombosis
US9248221B2 (en) 2014-04-08 2016-02-02 Incuvate, Llc Aspiration monitoring system and method
US9883877B2 (en) 2014-05-19 2018-02-06 Walk Vascular, Llc Systems and methods for removal of blood and thrombotic material
US10226263B2 (en) 2015-12-23 2019-03-12 Incuvate, Llc Aspiration monitoring system and method

Similar Documents

Publication Publication Date Title
US9545334B2 (en) System and method for modulated surgical procedure irrigation and aspiration
US5674226A (en) Method and apparatus for tissue excision and removal by fluid jet
US6179805B1 (en) Liquefracture handpiece
CA2518775C (en) System and method for pulsed ultrasonic power delivery employing cavitation effects
US6589204B1 (en) Method of operating a liquefracture handpiece
US6261297B1 (en) Thermal mode phaco apparatus and method
US5591127A (en) Phacoemulsification method and apparatus
CA2541845C (en) Control of pulse duty cycle based upon footswitch displacement
ES2327053T3 (en) System for controlling a surgical system based on flow irrigation.
CA2434480C (en) Rapid pulse phaco power for burn free surgery
US6986753B2 (en) Constant ocular pressure active infusion system
EP2191798B1 (en) Systems and methods for power and flow rate control
US3857387A (en) Ultrasonic cataract removal method and apparatus
CN102652005B (en) Thermal management algorithm for phacoemulsification system
CA2353941C (en) Pumping chamber for a liquefracture handpiece
US5830176A (en) Maintenance of pressure within a surgical site during a surgical procedure
CA2269266C (en) A liquefaction handpiece
US4921477A (en) Surgical irrigation and aspiration system with dampening device
US4369785A (en) Surgical fluid flow system
DE60305782T2 (en) surgical aspiration
CA2039636C (en) Method and apparatus for controlling ultrasonic fragmentation of body tissue
JP3803535B2 (en) Liquid vented surgical unit and the cassette
ES2325869T3 (en) Control of a phacoemulsification surgical system by transitioning between modes and pulse burst.
EP1199054A1 (en) Liquefracture handpiece tip
JP5129017B2 (en) Method of operation of the ultrasonic handpiece

Legal Events

Date Code Title Description
AS Assignment

Owner name: COOPERVISION, INC. 2801 ORCHARD PARKWAY, SAN JOSE,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:NORTIVAC, INC.;REEL/FRAME:004246/0205

Effective date: 19840313

Owner name: NORTIVAC, INC.

Free format text: CHANGE OF NAME;ASSIGNOR:CAVITRON CORPORATION;REEL/FRAME:004245/0784

Effective date: 19840227

AS Assignment

Owner name: AIG CAPITAL CORP.

Free format text: SECURITY INTEREST;ASSIGNOR:COOPER COMPANIES, INC.;REEL/FRAME:004932/0329

Effective date: 19881229

Owner name: COOPER COMPANIES, INC., THE

Free format text: CHANGE OF NAME;ASSIGNOR:COOPERVISION, INC.;REEL/FRAME:004932/0379

Effective date: 19870622

Owner name: IRVING TRUST CO., NEW YORK BANKING CORP.

Free format text: SECURITY INTEREST;ASSIGNOR:COOPER COMPANIES, INC., THE;REEL/FRAME:004932/0263

Effective date: 19880815

Owner name: UNION BANK

Free format text: SECURITY INTEREST;ASSIGNOR:COOPER COMPANIES, INC., THE, A DE. CORP.;REEL/FRAME:004932/0295

Effective date: 19880815

Owner name: COOPER COMPANIES, INC., THE,CALIFORNIA

Free format text: CHANGE OF NAME;ASSIGNOR:COOPERVISION, INC.;REEL/FRAME:4932/379

Owner name: COOPER COMPANIES, INC., THE, CALIFORNIA

AS Assignment

Owner name: COOPER COMPANIES, INC., THE

Free format text: LICENSE;ASSIGNOR:DAIWA BANK, LIMITED, LOS ANGELES AGENCY, THE;REEL/FRAME:005023/0532

Effective date: 19890115

Owner name: DAIWA BANK, LIMITED, LOS ANGELES AGENCY, THE, A BA

Free format text: SECURITY INTEREST;ASSIGNOR:COOPER COMPANIES, INC., THE;REEL/FRAME:005023/0501

Effective date: 19881229

AS Assignment

Owner name: UNION BANK, AS COLLATERAL AGENT

Free format text: SECURITY INTEREST;ASSIGNOR:COOPER COMPANIES, INC., THE;REEL/FRAME:005001/0436

Effective date: 19890115

AS Assignment

Owner name: COOPER COMPANIES, INC., THE A CORP. OF DE

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:IRVING TRUST COMPANY;REEL/FRAME:005153/0640

Effective date: 19890202

Owner name: COOPER COMPANIES, INC., THE, CALIFORNIA

Free format text: SECURITY INTEREST;ASSIGNOR:AIG CAPITAL CORP.;REEL/FRAME:005184/0092

Effective date: 19890201

Owner name: UNION BANK

Free format text: SECURITY INTEREST;ASSIGNOR:COOPER COMPANIES, INC., THE, A CORP. OF DE;REEL/FRAME:005224/0559

Effective date: 19890202

Owner name: COOPER COMPANIES, INC., THE,CALIFORNIA

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:IRVING TRUST COMPANY;REEL/FRAME:5153/640