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WO2002024253A2 - Irrigateur chirurgical electrique - Google Patents

Irrigateur chirurgical electrique Download PDF

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Publication number
WO2002024253A2
WO2002024253A2 PCT/US2001/042237 US0142237W WO0224253A2 WO 2002024253 A2 WO2002024253 A2 WO 2002024253A2 US 0142237 W US0142237 W US 0142237W WO 0224253 A2 WO0224253 A2 WO 0224253A2
Authority
WO
WIPO (PCT)
Prior art keywords
pumping unit
motor
irrigation
valve
surgical irrigator
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.)
Ceased
Application number
PCT/US2001/042237
Other languages
English (en)
Other versions
WO2002024253A3 (fr
Inventor
Michael Delk
Augustus Felix
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.)
CR Bard Inc
Original Assignee
CR Bard Inc
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 claimed from US09/668,178 external-priority patent/US6685667B1/en
Application filed by CR Bard Inc filed Critical CR Bard Inc
Priority to EP01973747A priority Critical patent/EP1318846A2/fr
Priority to AU2001293298A priority patent/AU2001293298A1/en
Priority to JP2002528322A priority patent/JP2004509674A/ja
Publication of WO2002024253A2 publication Critical patent/WO2002024253A2/fr
Publication of WO2002024253A3 publication Critical patent/WO2002024253A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M3/00—Medical syringes, e.g. enemata; Irrigators
    • A61M3/02—Enemata; Irrigators
    • A61M3/0233—Enemata; Irrigators characterised by liquid supply means, e.g. from pressurised reservoirs
    • A61M3/0254—Enemata; Irrigators characterised by liquid supply means, e.g. from pressurised reservoirs the liquid being pumped
    • A61M3/0258—Enemata; Irrigators characterised by liquid supply means, e.g. from pressurised reservoirs the liquid being pumped by means of electric pumps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M3/00—Medical syringes, e.g. enemata; Irrigators
    • A61M3/02—Enemata; Irrigators
    • A61M3/0204—Physical characteristics of the irrigation fluid, e.g. conductivity or turbidity
    • A61M3/0208—Physical characteristics of the irrigation fluid, e.g. conductivity or turbidity before use
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M3/00—Medical syringes, e.g. enemata; Irrigators
    • A61M3/02—Enemata; Irrigators
    • A61M3/0204—Physical characteristics of the irrigation fluid, e.g. conductivity or turbidity
    • A61M3/022—Volume; Flow rate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/71—Suction drainage systems
    • A61M1/77—Suction-irrigation systems
    • A61M1/774—Handpieces specially adapted for providing suction as well as irrigation, either simultaneously or independently
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3306—Optical measuring means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/82—Internal energy supply devices
    • A61M2205/8206—Internal energy supply devices battery-operated
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M3/00—Medical syringes, e.g. enemata; Irrigators
    • A61M3/02—Enemata; Irrigators
    • A61M3/0266—Stands, holders or storage means for irrigation devices

Definitions

  • the surgical irrigator illustrated in the '313 patent is battery powered. It includes a small electrical motor which drives an impeller to force water under pressure from an irrigation bag to a handpiece enabling a surgeon to irrigate a surgical site through a wand or probe attached to the handpiece.
  • the handpiece includes suction and irrigation lines which are controlled by trumpet valves. When the surgeon actuates the valve for the irrigation line, an electrical switch in the handpiece is closed which connects the motor to the batteries in the pumping unit, causing the pump to operate.
  • the pump, battery and motor are retained in a housing which is spiked directly into the irrigation bag.
  • the pump outlet is connected by tubing to the handpiece.
  • the tubing is about ten feet long which means that the wire which connects the on/off switch in the handpiece to the batteries and motor in the housing is also ten feet long. Since there must be two wires, the total amount of additional wire required to position the switch in the handpiece is in the order of twenty feet. This length of copper wire results in a number of significant drawbacks as follows:
  • the weight of the copper wire adds to the weight of the tubing and, of course, the overall weight of the irrigator;
  • a more specific object of the invention is to provide a battery powered irrigator in which the switching mechanism for the pump motor is not connected to the motor by a substantial length of wire.
  • battery powered irrigators are not typically used in endoscopic procedures where body cavities are distended, i.e. arthroscopy and hysteroscopy. The reason is that it is necessary to maintain distension throughout the operation. This means that the pump must be on at all times and, very often, the battery life is not sufficient. It would be feasible, however, to use a battery powered irrigator for these procedures so long as the distension can be maintained when the pump is turned off from a lack of flow, for example if the outflow from the knee or the uterus is stopped.
  • the pumping unit includes a spike on its inlet port which is specially constructed so that when the pumping unit is attached to a conventional irrigation bag, the entire weight of the pumping unit is supported by the spike. Because the weight of the unit is considerable, the spike must include special support means such as a rib or it must be increased in diameter so as to create a friction fit which will support the unit. Regardless of which technique is used, the modified spike is relatively difficult to insert into a standard irrigation bag.
  • a pump unit includes an inlet means with a spike which is easy to insert into a standard irrigation bag.
  • an electrically powered irrigation pump includes a pumping unit which is located in the vicinity of an irrigation bag and a handpiece connected by irrigation tubing to the pumping unit.
  • a flow sensing device connected at the output of the pumping unit, includes a float which moves when the surgeon opens the irrigation valve in the handpiece causing liquid to flow from the irrigation bag through the pumping unit.
  • a photosensor detects movement of the float from its initial position. When it does so, it causes the circuit between the electrical source of power and the motor to close which then drives the impeller. When the irrigation valve in the handpiece is closed, the float returns to its initial position. This is detected by the photosensor which then causes the circuit between the power source and motor to open and the pump is turned off.
  • a one-way valve is placed in the input line between the irrigation bag and the pump.
  • the one-way valve permits irrigant to flow into the pump but does not allow liquid to flow back into the irrigation bag when flow through the system stops, for example, by closure of the irrigation valve in the handpiece or by blockage of flow in an arthroscopic or hysteroscopic procedure.
  • cavity distension can be maintained in such procedures when flow is stopped.
  • the pumping unit includes clips which support the weight of the pumping unit on the IV pole or other device which holds the irrigation bag.
  • the pumping unit includes a short flexible hose which is connected at one end to the inlet port of the pumping unit and at the other end to a conventional spike.
  • the spike is coated with a lubricant such as silicone which makes it extremely easy for a nurse or other technician to attach the pumping unit to an irrigation bag.
  • Fig. 1 is a perspective view of an irrigation system in accordance with a preferred embodiment of the invention
  • Fig. 2 is an exploded perspective view of a pumping unit in accordance with the preferred embodiment of the invention.
  • Fig. 3 is a side plan view of the pumping unit
  • Fig. 4 is a side sectional view along the line 4-4 of Fig. 3;
  • Fig. 5 is a top plan view along the line 5-5 of Fig. 3;
  • Fig. 6 is a top plan view along the lines 6-6 of Fig. 3;
  • Fig. 7 is a sectional view along the line 7-7 of Fig. 3;
  • Fig. 8 is a side sectional view of the battery isolator switch
  • Fig. 9 is a top sectional view along the line 9-9 of Fig. 8;
  • Fig. 10 is a sectional view along the line 10-10 of Fig. 9;
  • Fig. 11 is a block diagram showing the control circuitry of the flow sensor according to a preferred embodiment.
  • Fig. 12 shows a further embodiment of the invention in which a one way valve prevents irrigant from flowing into the irrigation bag when the irrigation valve is closed;
  • Fig. 13 is a side sectional view along the line 13-13 of Fig. 12 showing a preferred embodiment of a one-way valve in the closed position;
  • Fig. 13A is a side view partially in section showing the one-way valve in its open position
  • Fig. 14 is a perspective view of the valve body in accordance with a preferred embodiment
  • Fig. 15 is a sectional view along the line 15-15 of Figure 13 A.
  • Figure 16 is a front view partially in section of a flow-sensing device in accordance with a second embodiment of the invention.
  • Figure 17 is a top sectional view along the line 17-17 of Figure 16.
  • Figure 18 is a front sectional view along the line 18-18 of Figure 17. Detailed Description
  • Figure 1 shows the main components of a surgical irrigator in accordance with the preferred embodiment of the invention.
  • the device illustrated provides irrigation and suction and is similar in construction to the irrigator/suction device shown in the '313 patent.
  • a battery powered pumping unit 10 is detachably secured at its inlet to an irrigation bag 12 (e.g. a saline bag) and, at its outlet, to a handpiece 14 which is also connected to a suction line 15.
  • the pumping unit 10 receives irrigation liquid through an inlet port 17 which is attached to the bag 12 by means of a short flexible tube 13 and a spike 18.
  • spike 18 is a commercially available device and is coated with a lubricant such as silicone so that it can be easily spiked, i.e. inserted, into the conventional fitting of the irrigation bag. With this arrangement, the frictional force between the spike and bag is so low that it is unable to support the weight of the pumping unit 10.
  • the pumping unit 10 also includes integrally formed clips 16 which are adapted to engage the IV pole 19 on which the irrigation bag 12 is supported.
  • a medical technician attaches the pumping unit to the IV pole 19 before the spike is inserted into the fitting of the irrigation bag 12.
  • the device is used in conventional fashion.
  • the flexible tubing 13 is required to accommodate a situation in which the pumping unit 10 and bag 12 are not axially aligned, which is typical.
  • Pumping unit 10 includes a pump head 20 which includes the inlet port 17 and an outlet port 23 for directing irrigation liquid from the pump through a flow sensor 24 and flexible irrigation tubing 26 to the handpiece 14.
  • Handpiece 14 directs irrigation liquid to an irrigation site within a patient's body through an elongate wand 28 that may be advanced to the irrigation site through a laparoscopic cannula.
  • Trumpet valves 29 and 31 enable the surgeon to selectively couple the irrigation liquid or suction source, respectively, to the surgical site.
  • the pumping unit 10 is similar to the pumping unit described in U.S. patent No. 5,807,313 and, accordingly, not all details are described herein.
  • the pump head 20 includes a battery case 28 which holds eight batteries 30 arrayed around the periphery of the case.
  • the pumping unit further includes a deck 35 which rotatably supports an impeller 32 within the pump head 20.
  • a motor 34 is attached to the bottom surface of deck 35 by means of screws 36 with its output shaft 38 extending through the deck and into the impeller 32. When the motor is connected to batteries 30, it will drive the impeller to pump irrigation liquid from the inlet port 17 to the outlet port 23.
  • the pumping chamber above deck 35 is sealed from the motor 34 and batteries 30 beneath the deck by a sealing gasket 40 and an O-ring 42 which is seated in a groove within an upstanding collar 44 on the deck 35.
  • the gasket 40 is retained on the collar 44 by means of a seal retainer 46.
  • the batteries 30 are connected to motor 34 by five upper contacts 50 A, B, C, D and E (Fig. 5) and four identical lower contacts 52. As explained in U.S. patent No. 5,807,313, the batteries 30 are connected in series with the motor 34. As shown in Figure 2, each of the lower contacts 52 includes two flat discs 52A which are connected by a V-shaped connecting strip, with each of the discs contacting a lower terminal of one battery. Eight coil springs 54 at the bottom of the battery case apply pressure against the discs 52A of the bottom contacts 52 so that the lower contacts 52 and batteries 30 are spring biased against the upper contacts 50A, B, C, D and E.
  • the upper contacts 50C, D and E connect positive and negative terminals of adjacent batteries together, but the contacts 50A and 50B are only connected to one battery terminal each.
  • Contacts 50A and 50B are mounted on a printed circuit board (PCB) 53 which is described below.
  • Contacts 50A and 50B are connected by circuit traces (not shown) on PCB 53 to the upper ends of two wires 56 which are soldered to terminals on the PCB. The other ends of the wires 56 are soldered to the motor terminals (not numbered).
  • the batteries are held in place within battery case 28 by means of a series of projections 58 and 60 which extend upwardly from the floor of the case. The projections 58 each contact two adjacent batteries while the projections 60 are in contact with only a single battery.
  • a battery isolator switch 62 is provided to open the circuit between the batteries and motor prior to use, i.e. during transit and storage.
  • the battery isolator switch 62 includes a collar 64,which frictionally retains one of the batteries 30, and a cam 66 on the upper surface of collar 64.
  • the collar 64 includes an upper plate 65 which has a central opening through which the positive terminal 30A of the retained battery 30 extends so that it can make electrical contact with the associated contact 50C when the isolator switch is "on".
  • Cam 66 rides in a circular track (not numbered) within the undersurface of the deck 35.
  • the collar 64 and its retained battery 30 are rotatable by turning a radially extending actuator arm 68 (see Fig. 6).
  • An upward projection 72 diametrically opposed to the cam 66 stabilizes collar 64 during rotation.
  • the groove within the undersurface of deck 35 includes a cam follower depression 74.
  • the switch is "off,” i.e. during transit and storage prior to use, with the collar 64 rotated to the "off position, the cam 66 does not sit within the groove 74 and the terminal 30A of the battery 30 retained by collar 64 is pushed out of engagement with the upper contact 50C (Fig. 10).
  • cam 66 moves into the depression 74 and the coil spring 54 pushes the battery 30 into electrical contact with contact 50C.
  • the motor can then be started as described below by the flow sensor when the irrigation valve is opened.
  • the actuator arm 68 is rotated to lift the cam 66 from depression 74, pushing the battery terminal 30A away from the contact 50C.
  • the flow sensor 24 (Figs. 2 and 4-7) comprises a top shroud 76 and a bottom shroud 78 which include mating surfaces that can be sealed in conventional fashion.
  • the top shroud 76 serves as an elbow and its upper end is sealed to outlet port 23 of the pump.
  • the two shrouds 76 and 78 together serve as a housing for the actual detector which includes a bottom sleeve 80 and a top sleeve 82.
  • the upper portion of sleeve 80 is enlarged so that it can receive the top sleeve 82.
  • Each sleeve 80, 82 includes a flat so that the angular positions of the two sleeves is fixed relative to each other.
  • Sleeve 80 includes a lower cross bar 80A and sleeve 82 includes a lower cross bar 82A so that when the sleeves are assembled, the cross bars 82A and 80A serve as upper and lower stops, respectively, for a float or ball 84.
  • the ball 84 is shown in phantom in both its up and down positions. When the sleeves are assembled with the flats in engagement, the cross bars 80A and 82A are parallel to each other.
  • the irrigation tubing 26 is filled with irrigating liquid
  • the ball 84 will float within the cage formed by the sleeves with its upper movement limited by the cross bar 82A.
  • liquid flow starts under the influence of gravity which drives the ball 84 downwardly into engagement with the lower cross bar 80A. It is this movement of the ball which is detected and used to start the motor.
  • a photodetector comprising an infrared (TR) light emitting diode (LED) 86 and phototransistor 88 are retained within a cradle 90 which is mounted on the printed circuit board 53.
  • the PCB is secured to the bottom of the deck 35 by screws 93 (Fig. 2).
  • Deck 35 includes flanges 94 which support the printed circuit board 53 and the cradle 90.
  • the printed circuit board 53 contains the circuitry for actuating the light source, sensing the movement of the ball, and closing the circuit to the motor 34 as explained below with reference to Fig. 11. Since the movement of the ball is sensed optically, the material of sleeve 80 must be transparent to the optical energy which, in the preferred embodiment, is infrared.
  • the ball is opaque to the optical energy and, as shown in Fig. 7, when it floats, i.e., when it is in the 'up' position, it blocks the passage of light from TR LED 86 to the phototransistor 88. When the ball moves under the influence of gravity to the down position, the optical path between LED 86 and phototransistor 88 is open.
  • Fig. 11 illustrates in block diagram form one embodiment of the circuitry for driving the infrared LED 86, for sensing the down position of the ball 84, and for driving the motor 34.
  • Voltages and frequencies referred to below are for purposes of explanation only. Obviously, many different optical sensing devices can be used to sense movement of the ball.
  • a voltage regulator 100 which produces a regulated voltage of 5.1 volts, for example.
  • the voltage output from voltage regulator 100 is connected to a clock generator 102 which produces on its output a 4.5 Khz square wave.
  • the output of the clock generator 102 is fed to an TR LED driver 104 which produces the pulses which drive the infrared LED 86.
  • Driver 104 is powered by the 12 volt battery supply.
  • the TR sensor 88 receives a pulsed optical signal from LED 86 which is coupled to an IR receiver/amplifier 106.
  • Amplifier 106 is also powered by the 5.1 volt output from regulator 100.
  • the output from amplifier 106 and clock generator 102 are fed to a synchronous integrating detector 108 which compares the data signal from the phototransistor 88 with the clock signal and produces an output when they are similar for a predetermined time duration.
  • a static data signal will not cause a data output from detector 108 but a valid output will be generated even if random noise appears on the signal from the phototransistor 88.
  • the detector 108 compares alternating phases of the clock signal and the data signal and produces an output only (a) when both signals are high, and (b) when both signals are low.
  • the detector also introduces a time delay so that the motor is turned on a predetermined time after the irrigation valve 29 is opened (e.g. 10 ms), and the motor is turned off a predetermined time after the valve is closed (e.g. 15 ms).
  • the detector output is coupled to a pump motor driver which starts (or stops) the motor.
  • the operation of the system is as follows. After the pumping unit 10 has been secured to the TV pole and the spike 18 inserted into the irrigation bag 12, the tubing 26 to the handpiece is mostly filled with air. The flow sensor ball 84 is in the down position and the battery isolating switch 62 is off.
  • the irrigation valve 29 is pressed, opening the valve and permitting irrigation liquid to flow from the irrigation bag 12 through tubing 26 and handpiece 14 by gravity.
  • the irrigation valve 29 is released closing the valve.
  • the sensor ball 84 then floats to the up position and the battery isolator switch 62 can be turned on.
  • the motor 34 will remain off because the ball 84 is in the up position.
  • the system is primed and ready for operation.
  • the irrigation valve 29 is depressed, liquid flows causing the ball 84 to move to the down position to turn on the motor as described.
  • the system can also be primed by using the pump. To do this, the irrigation valve 29 is opened and the switch 62 turned on. Because the ball is in the down position, the motor 34 will turn on and fill the fluid path. When the fluid path is filled with liquid, closing the irrigation valve will cause the flow sensor ball 84 to float to the up position.
  • irrigant can flow from the pump through the spike 18 into the irrigation bag 12 when the irrigation valve 29 is closed. This can lead to a slight delay between the time the irrigation valve 29 is depressed and the time the powered irrigant stream reaches the surgical site.
  • Figures 12-15 illustrate a valve construction which can be employed in a preferred embodiment of the invention to maintain pressure within the pumping system above atmospheric pressure when the irrigation valve 29 is closed or when the flow of irrigant is stopped for any reason.
  • valve 112 prevents liquid to flow from irrigation bag 12 to pumping unit 10 but does not permit backflow of the irrigant when the pump is turned off.
  • irrigation valve 29 is released (i.e. the valve is closed)
  • the liquid within the pump system (between one-way valve 112 and irrigation valve 29) is maintained at a pressure above the pressure in the irrigation system caused by the liquid head.
  • irrigation valve 29 is depressed, the release of the store energy moves the float 84 rapidly causing the pump to start operation almost immediately.
  • Another benefit of the one-way valve 112 is to prevent air bubbles within the system from affecting operation. Without the valve, as the pressure in the system tends to equilibrate when the irrigation valve 29 is released, air bubbles within the system will float upwardly toward the irrigation bag. As these bubbles pass the IR sensor 86, 88 (Fig. 7), they can unintentionally activate the motor. This is undesirable for a number of reasons. First, the surgeon expects the motor to turn off when the irrigation valve is not depressed. Secondly, the needless operation of the pump causes noise and can lead to overheating of the motor and unnecessary depletion of battery life. With one-way valve 112 in the inlet line 13, when irrigation valve 29 is released, any air bubbles in the system are locked within the pressurized system; therefore, they are not subject to movement which would cause the motor to turn on.
  • the construction of a preferred one-way valve 121 is shown in Figures 13-15.
  • the valve includes an exterior cylindrical housing 120 which is attached to the spike 18 at its upper end and to the inlet tube 13 at its lower end.
  • a cylindrical internal seat 122 is fixed in the upper portion of housing 120 and includes a conical surface 124 which flares outwardly at its bottom and serves as a seat for a valve body 126.
  • Valve body 126 as shown in Figure 14, includes a generally cylindrical base 128 which is flared at its lower end so that a sealing O-ring 130 can be held on the base.
  • a cross piece 132 extends upwardly from base 128 and includes two outwardly extending retaining lips 134. As shown in Figure 15, the width of the cross piece 132 is less than the diameter of the spike conduit 136.
  • a coil spring 138 is compressed between the under surfaces of the retaining lips 134 and the upper surface of an internal rim 140 from which the conical seating surface 124 extends. Spring 138 urges the valve body 126 toward the spike 18 which biases O-ring 130 against the seating surface 124 to close the valve.
  • valve body 126 When the irrigation valve 29 is closed, the valve body 126 is in the position shown in Figure 13, i.e. valve 112 is closed. When the surgeon depresses valve 29, water starts to flow through spike 18 and conduit 136 due to gravity. The force applied by the water against the valve body 126 is greater than the retaining force applied by spring 138, causing the valve body to move downwardly to the position shown in Figure 13 A in which the irrigant flows past the O-ring 130 to the inlet tube 13. When irrigation valve 29 is released (i.e. closed), spring 138 returns the valve body to the position shown in Figure 13 which closes the valve and prevents liquid from flowing upwardly through spike 18 into irrigation bag 12. This places the liquid in the pumping system under pressure. As a result, the motor is turned on almost immediately after valve 29 is depressed and the presence of air bubbles does not affect system operation.
  • the pump can be used for endoscopic procedures where body cavities are distended (e.g. arthroscopy and hysteroscopy) because backflow of irrigant is prevented by the one-way valve when outflow from the cavity is stopped. This keeps the pressure in the system above the pressure due to the liquid head to maintain distension.
  • body cavities e.g. arthroscopy and hysteroscopy
  • the optical beam is blocked when the ball is floating and unblocked when flow starts.
  • the device may work in the opposite fashion, i.e. by blocking the optical path when flow starts (i.e. the ball is down).
  • the basic principles of the invention do not depend on the type of photo detection employed.
  • FIGs 16-18 illustrate a flow-sensing device in accordance with a second embodiment of the invention.
  • the bottom and top sleeves 80 and 82 of the first embodiment (Fig. 7) are replaced by a tubular member 150 and a lower sleeve 152 which retains the pump outlet tube 26.
  • Tubular member 150 includes an enlarged diameter section or chamber 152 in which an opaque float/shutter 154 can move in response to liquid flow.
  • the shutter 154 includes four fins 156 and an upper dome 158. The upper dome occludes the flow channel through tubular member 150 when the shutter is in its uppermost position as shown in phantom lines.
  • the finned construction permits liquid flow when the shutter is driven to its lowermost position in which it abuts the upper end of sleeve 152.
  • Tubular member 150 may be made of polycarbonate or any other material transparent to optical energy which, in this embodiment, is also infrared.
  • the infrared transmitter and receiver may be the same as illustrated in Figures 5-7. h this embodiment, however, when shutter 154 floats in its uppermost position, i.e. when no liquid is flowing through tubular member 150, the infrared beam passes from the transmitter through the transparent member 150 to the infrared receiver.
  • handpiece valve 29 is depressed and flow starts, the shutter is pushed downwardly to the position shown in solid lines in Figure 18 where it interrupts the infrared light beam. The interruption of the beam is sensed by the circuit in the printed circuit board (see Figs. 2 and 5) which then closes the energizing circuit to the motor.
  • a surgical irrigator is used in conjunction with a handpiece of the type customarily used for laparoscopic surgery.
  • the invention is also useful in other types of endoscopic procedures such as arthroscopy and hysteroscopy.
  • handpiece is intended to encompass handpieces of the type use for laparoscopic surgery as well as cannulas of the type used in arthroscopic and hysteroscopic surgery.
  • irrigation valve is intended to include any device which starts and stops liquid flow to a surgical site.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Hematology (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Endoscopes (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne un irrigateur chirurgical composé d'une unité de pompage reliée une pièce à main par l'intermédiaire d'une tubulure d'irrigation allongée. L'unité de pompage comporte une turbine et un moteur à pile destiné à entraîner la turbine. La pièce à main comporte une valve d'irrigation ouvrant la valve en position enfoncée, et permettant au liquide d'irrigation de circuler jusqu'à la zone chirurgicale. Un appareil de détection de flux est disposé à la sortie de l'unité de pompage. Lorsque la valve d'irrigation est ouverte, le liquide traversant le dispositif de détection de flux sous l'effet de la gravité amène un flotteur à se déplacer avec le liquide. Une source lumineuse émet un faisceau lumineux interrompu par le mouvement du flotteur. Ledit faisceau est détecté par un photodétecteur produisant un signal destiné à mettre le moteur en marche de manière à actionner la pompe. Un commutateur d'isolation de pile sert à interrompre le circuit entre les piles et le moteur de manière que le système ne puisse être mis en marche durant le transport ou le stockage. Une valve antireflux connectée entre la source de liquide d'irrigation et la pompe maintien le liquide contenu dans l'irrigateur à une pression supérieure à la pression atmosphérique lorsque la valve est fermée. L'unité de pompage comporte une admission connectée à une extrémité d'un tube flexible court, l'autre extrémité de celui-ci étant connectée à un perforateur standard destiné à connecter l'unité de pompage à une poche d'irrigation. L'unité de pompage comporte également des attaches fixant l'unité de pompage sur une potence pour intraveineuse ou similaire. Le perforateur est revêtu de silicone de manière à réaliser une connexion simple entre l'unité de pompage et la poche d'irrigation.
PCT/US2001/042237 2000-09-22 2001-09-20 Irrigateur chirurgical electrique Ceased WO2002024253A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP01973747A EP1318846A2 (fr) 2000-09-22 2001-09-20 Irrigateur chirurgical electrique
AU2001293298A AU2001293298A1 (en) 2000-09-22 2001-09-20 Electrically powered surgical irrigator
JP2002528322A JP2004509674A (ja) 2000-09-22 2001-09-20 外科用電動洗浄器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/668,178 US6685667B1 (en) 2000-01-11 2000-09-22 Electrically powered surgical irrigator
US09/668,178 2000-09-22

Publications (2)

Publication Number Publication Date
WO2002024253A2 true WO2002024253A2 (fr) 2002-03-28
WO2002024253A3 WO2002024253A3 (fr) 2003-03-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/042237 Ceased WO2002024253A2 (fr) 2000-09-22 2001-09-20 Irrigateur chirurgical electrique

Country Status (4)

Country Link
EP (1) EP1318846A2 (fr)
JP (1) JP2004509674A (fr)
AU (1) AU2001293298A1 (fr)
WO (1) WO2002024253A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014082003A1 (fr) * 2012-11-26 2014-05-30 Kci Licensing, Inc. Pompe et système de stockage de solution combinés pour utilisation avec un système de traitement à pression réduite

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5484402A (en) 1993-12-30 1996-01-16 Stryker Corporation Surgical suction irrigator
US5807313A (en) 1996-07-19 1998-09-15 C. R. Bard, Inc. Battery powered surgical irrigator

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4669453A (en) * 1982-12-01 1987-06-02 Snyder Laboratories, Inc. Lavage system
US4604089A (en) * 1983-08-15 1986-08-05 Codman & Shurtleff, Inc. Pressure regulated irrigation system for arthroscopy
US5464391A (en) * 1994-03-03 1995-11-07 Northgate Technologies Inc. Irrigation system for a surgical site
US5876378A (en) * 1996-09-20 1999-03-02 Mbadugha; Joseph O. Apparatus and method for injecting liquids into patients
US6176847B1 (en) * 1999-05-14 2001-01-23 Circon Corporation Surgical irrigation system incorporating flow sensor device
US6685667B1 (en) * 2000-01-11 2004-02-03 C. R. Bard, Inc. Electrically powered surgical irrigator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5484402A (en) 1993-12-30 1996-01-16 Stryker Corporation Surgical suction irrigator
US5807313A (en) 1996-07-19 1998-09-15 C. R. Bard, Inc. Battery powered surgical irrigator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014082003A1 (fr) * 2012-11-26 2014-05-30 Kci Licensing, Inc. Pompe et système de stockage de solution combinés pour utilisation avec un système de traitement à pression réduite
AU2013347852B2 (en) * 2012-11-26 2017-12-14 Solventum Intellectual Properties Company Combined solution pump and storage system for use with a reduced-pressure treatment system
US10232155B2 (en) 2012-11-26 2019-03-19 Kci Licensing, Inc. Combined solution pump and storage system for use with a reduced-pressure treatment system
CN109701095A (zh) * 2012-11-26 2019-05-03 凯希特许有限公司 用于与减压治疗系统一起使用的组合溶液泵和储存系统
EP3566730A1 (fr) * 2012-11-26 2019-11-13 KCI Licensing, Inc. Pompe de solution combinée et système de stockage pour une utilisation avec un système de traitement à pression réduite

Also Published As

Publication number Publication date
EP1318846A2 (fr) 2003-06-18
AU2001293298A1 (en) 2002-04-02
WO2002024253A3 (fr) 2003-03-06
JP2004509674A (ja) 2004-04-02

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