CN104055623B - Phacoemulsification handpiece with integral type suction pump - Google Patents

Abstract

A kind of ophthalmic surgical hand piece, including: the driver coupled with horn, described horn couples with pin；Suction pump integral part of with described head, described suction pump is arranged near described pin；And the removable cartridge engaged with described suction pump；Wherein said removable cartridge includes a part for aspiration line.

Description

Phacoemulsification handpiece with integral type suction pump

The application is entitled " with the phacoemulsification handpiece of integral type suction pump ", international Shen Please day be December in 2010 3 days, international application no be PCT/US2010/058931, country The divisional application of the application for a patent for invention of Application No. 201080061345.8.

Technical field

The present invention relates to phacoemulsification surgery, relate more particularly to preferably regulate in cataract The device of pressure experienced in intra-operative eyes.

Background technology

Human eye for dividing by light being transmitted through the clear outer being referred to as cornea, and by Focus an image to provide on retina vision in crystalline lens.The quality of focusedimage depends on Many factors, including the size and shape of eyes and cornea and lenticular transparency.Then When age or disease cause crystalline lens to become the most transparent, vision is likely to be due to be transmitted to view The light of film weakens and is deteriorated.This defect lenticular of eyes is medically known as cataract. Acceptable treatment for this situation is surgical lens removal, and uses artificial intraocular lens (IOL) crystalline lens function is replaced.

In the U.S., major part cataractous lens is by being referred to as the operation side of Phacoemulsification Method is extractd.It is suitable for the typical surgical head of phacoemulsification program by ultrasound-driven crystalline lens breast Change head, by perfusion cannula around attached hollow cutting needle and electronic console form. Nose assembly is attached to control station by cable and flexible conduit.By cable, control station changes The watt level of subsidiary cutting needle it is delivered to by head.Flexible conduit is by one's hands for perfusion fluid supply Art position, and attract the suction fluid from eyes by nose assembly.

Typical case head in operation part be attached to one group of piezoquartz be centered about, in Empty resonance bar or horn.Crystal supply drives horn and appended during phacoemulsification The required supersonic vibration that cutting needle even needs, and by control station control.Crystal/horn group Part is suspended in hollow body or the housing of head by flexible mount.Crosshead body terminates at In the reduction diameter portion of the far-end of main body or precentrum.Typically, precentrum has external screw thread To receive the hollow perfusion cannula of the most of length around cutting needle.Similarly, horn chamber Far-end at it has female thread to receive the external screw thread of cutting tip.Perfusion cannula also has stubborn Receive the tapped chamber on the external screw thread of precentrum.Cutting needle is adjusted so that its tip Only protrude past the open end scheduled volume of perfusion cannula.

During phacoemulsification program, eye is passed through in the tip of cutting needle and the end of perfusion cannula Little otch in the outside organization of eyeball inserts in the leading portion of eyes.Surgeon makes the point of cutting needle End and the lens contact of eyes so that vibrating tip segmentation crystalline lens.The fragment finally produced It is sucked by the inner chamber of cutting needle together with being supplied to the primer solution of eyes during this program Outside eyes, and enter waste canister.

During whole program, perfusion fluid is pumped in eyes, by perfusion cannula with cut Cut between pin and cut near its end at the tip of perfusion cannula and/or from perfusion cannula The one or more apertures become or opening enter in eyes.This perfusion fluid it is critical that, Reason is that it prevents withering of excision eyes during the crystalline lens of emulsifying.Perfusion fluid is also protected Eye protection tissue avoids the heat generated by the vibration of ultrasonic cut pin.Additionally, irrigate fluid suspended warp The lenticular fragment of emulsifying aspirates for from eyes.

Common phenomenon during phacoemulsification program occurs during carrying out comfortable whole operative procedure Change flow rate.Change flow rate causes the change from the perfusion fluid path of perfusion fluid source to eyes Change the pressure loss, therefore cause the change of pressure (also referred to as intraocular pressure or IOP) in anterior chamber Change.Higher flow rate causes the bigger pressure loss and lower IOP.When IOP reduces, Working place in eyes reduces.

Another FAQs during phacoemulsification procedure is from the obstruction or stifled of aspiration needle Plug.When perfusion fluid and being sucked by hollow cutting needle through the tissue of emulsifying is left in eyes During portion, blocking may be become in the tip of pin more than the fragment of tissue of the diameter in the chamber of pin. When most advanced and sophisticated blocked time, vacuum pressure is formed in tip.Finally produce when blocking is removed Eyes in anterior chamber in pressure drop be referred to as blocking after surge.After this blocking, surge is in some feelings Relatively great amount of fluid and tissue can be caused under condition to be too fast sucked into outside eyes, may Cause eyes to wither and/or cause phacocyst to tear.

The various technology such as making aspiration line ventilate are designed to reduce this surge.But, Need nonetheless remain for the Phacoemulsification device improved, it reduces surge and in whole change after blocking Stable IOP is kept during flow regime.

Summary of the invention

In an embodiment of the principle according to the present invention, the present invention relates to a kind of external coat machine Head, comprising: be connected to the driver of horn, described horn is connected to pin；With described Head all-in-one-piece suction pump, described suction pump is placed close to described pin；And it is positioned at described The rigidity aspiration line of the segment length between suction pump and described pin.

In another embodiment in accordance with the principles of the invention, the present invention relates to a kind of external coat Head, comprising: be connected to the driver of horn, described horn is connected to pin；With institute Stating head all-in-one-piece suction pump, described suction pump positions near described pin；Take out described in being connected to The disposable section of sucking pump；And the segment length between described suction pump and described pin Rigidity aspiration line.

It is to be understood that general introduction above and detailed below are merely exemplary and explanatory, And aim to provide being explained further of the present invention as claimed in claim.Below describe and The enforcement of the present invention illustrates and proposes advantages of the present invention and purpose.

Accompanying drawing explanation

The accompanying drawing of the part comprising in this specification and constituting this description shows this Bright some embodiments and together with the description for explaining the principle of the present invention.

Fig. 1 is the diagram of the parts in the fluid path of phacoemulsification systems, and this system includes The head with integral type suction pump of the principle according to the present invention.

Fig. 2 is the phacoemulsification handpiece in accordance with the principles of the present invention with integral type suction pump Structure chart.

Fig. 3 is the phacoemulsification handpiece in accordance with the principles of the present invention with integral type suction pump Structure chart.

Fig. 4 is the phacoemulsification handpiece in accordance with the principles of the present invention with integral type suction pump The side view of a part.

Fig. 5 is the phacoemulsification handpiece in accordance with the principles of the present invention with integral type suction pump The cross-sectional view of a part.

Fig. 6 is and the phacoemulsification handpiece in accordance with the principles of the present invention with integral type suction pump The side view of the removable cartridge being used together.

Fig. 7 is the phacoemulsification machine with integral type suction pump with the principle according to the present invention The perspective view of the removable cartridge that head is used together.

Detailed description of the invention

The most in detail with reference to the exemplary embodiment of the present invention, described reality shown in the drawings Execute the example of example.Whenever possible, identical reference is for representing identical in all figures Or similar part.

Fig. 1 is the diagram of the parts in the fluid path of phacoemulsification systems, and this system includes The head with integral type suction pump of the principle according to the present invention.Fig. 1 depicts cataract hands The fluid path by eyes 145 during art.Parts include irrigation source 120, optionally fill Injection pressure force transducer 130, optional pouring valve 135, fill up line 140, head 150, take out Suction pipe line 155, optional suction pressure sensor 160, optional breather valve 165, pump 170, Container 175 and drainage bag 180.Fill up line 140 will irrigate fluid during cataract operation It is supplied to eyes 145.Fill up line 155 during cataract operation from eyes remove fluid and Crystalline lens through emulsifying.

When irrigating fluid and leaving irrigation source 120, it is moved through fill up line 140 and enters Enter eyes 145.The perfusion fluid in fill up line 140 measured by injection pressure sensor 130 Pressure.Optional pouring valve 135 is also provided for the ON/OFF of perfusion and controls.Injection pressure passes Sensor 130 is realized by any one of multiple commercially available fluid pressure sensor.

Head 150 is arranged relative to eyes 145 during phacoemulsification program.Head 150 There is hollow needle (in Fig. 2 and 3 270), described hollow needle in eyes supersonic vibration with broken Bad diseased lens.Sleeve pipe around pin location provides the perfusion fluid from fill up line 140. Perfusion fluid is through the space the outside and the inner side of sleeve pipe of pin.Fluid and lens particles It is sucked by hollow needle.In like fashion, the inner passage of hollow needle is fluidly coupled to suction Pipeline 155.Pump 170 attracts the suction fluid from eyes 145.Optional swabbing pressure passes Sensor 160 measures the pressure in aspiration line.Optional breather valve may be used for ventilation by pump 170 The vacuum produced.Suction fluid through container 175 and enters drainage bag 180.

Fig. 2 is the phacoemulsification handpiece with integral type suction pump of the principle according to the present invention Structure chart.In fig. 2, head 150 include motor 210, axle 220, removable cartridge 230, Optional suction pressure sensor 160, driver 250, horn 260, pin 270 and suction Pipeline 280.Motor 210 makes axle 220 rotate.When pump is in operation, removable cartridge 230 is protected Hold and abut against axle 220.Suction pressure sensor 160 is positioned at removable cartridge 230 and eyes 145 Between.

In fig. 2, pump 170 includes motor 210, axle 220 and in removable cartridge 230 Flexible conduit.In one embodiment of the invention, axle 220 has and is pressed against removable cartridge 230 In flexible conduit on helical structure.In like fashion, horse is used in spiral or vortex suction pump Reach the flexible conduit in 210, axle 220 and removable cartridge 230 to realize.This is in figures 4 and 5 More clearly it is shown and described.Although pump 170 is described as helical type pump, it is possible to use Other type of pump.

Aspiration line 280 is fluidly coupled to removable cartridge 230.Aspiration line also extends through Or around driver 250, horn 260 and pin 270.Cavity fluid ground in pin 270 couples To aspiration line 280.As it has been described above, fluid and the lens particles inner chamber quilt by pin 270 Suction.Suction pump 170 attracts fluid and lens particles by the inner chamber of pin 270.

Driver 250 typically produces the ultrasonic drivers of the supersonic vibration in horn 260. Horn 260 is typically connected to a nugget genus of driver 250 and pin 270.With the party Formula, driver 250 vibration produced is passed to horn 260 and pin 270.Pin 270 It is placed in eyes and vibrates to split cataractous lens.

Suction pressure sensor 160 measures the swabbing pressure in aspiration line 280.Although display For between removable cartridge 230 and driver 250, but suction pressure sensor can position Any position between pump 170 and eyes 145.Suction pressure sensor 160 can be by many Known to kind, any one of pressure sensor apparatus realizes.

Fig. 3 is the phacoemulsification handpiece with integral type suction pump of the principle according to the present invention Structure chart.The example of Fig. 3 has the element of Fig. 2 plus optional breather valve 165.When can In the presence of the breather valve 165 of choosing, it is for providing the ventilation path of suction pump 170.With the party Formula, when breather valve 165 is opened, pump 170 can such as be vented to air.Such as institute in Fig. 3 Showing, aspiration line 280 has two paths: a path passes removable cartridge 230, and Another path is around removable cartridge 230.This second path (it is around removable cartridge 230) and The breather valve 165 of association can also cover in removable cartridge 230.When breather valve 165 is beaten When opening, pump 170 suction or the vacuum that produce are vented in air reduce owing to it is in.

Figure 4 and 5 are the crystalline lens breast in accordance with the principles of the present invention with integral type suction pump respectively Change side view and the cross-sectional view of a part for head.Figure 4 and 5 more clearly illustrate removable Unload the details of an example of cylinder 230 and pump 170.In an example shown, removable cartridge 230 Including the 405, first pipe joint 420 of aspiration line joint, tubing retainer 440 and lever 430.These parts are integrated in framework, as shown in the figure.Removable cartridge 230 can be from machine The remainder of head is disassembled.

In the example of the removable cartridge shown in Figure 4 and 5, aspiration line joint 405 can be attached Link the suction channel being connected to surgical console.In like fashion, aspiration line joint 405 leans on Closely it is connected to the end of the head of surgical console.Pipe extends to from aspiration line joint 405 One pipe joint 420.This pipe is a part for the aspiration line 280 shown in Fig. 2 and 3.

Tubing retainer 440 remains in the flexible pipe between axle 220 and tubing retainer 440 (not shown).Flexible conduit is pressed against on tubing retainer 440 by axle 220.When axle 220 revolves When turning, fluid pumping (is therefore realized spiral shell by flexible conduit by the spiral type projection on axle 220 Rotating or vortex pump).Tubing retainer 440 is by being suitable for keeping the rigid material of flexible conduit Manufacture.It is connected to the first pipe joint 420 one terminal fluid of flexible conduit, and scratches It is connected to second pipe joint 425 another terminal fluid of property pipeline.In like fashion, scratch Property pipeline is a part for aspiration line 280.

Lever 430 for being fixed to the remainder of head by removable cartridge 230.Although display For lever, but other mechanism may be used for being fixed to removable cartridge the remainder of head.

Motor 210 is connected to axle 220 and for making axle 220 rotate.Motor 210 can be controlled With control axle 220 motion, following more clearly as described in.Motor 210 typically direct current Motor, but any kind of motor or the driver of rotary shaft 220 can be suitable for.

In the example shown in Figure 4 and 5, adapter 450 will be kept by tubing retainer 440 Flexible conduit be connected to head joint 415.Adapter connector 410 is directly or via another Individual part is connected with each other with head joint 415.In like fashion, aspiration path passes head joint 415, adapter connector 410, adapter 450, second pipe joint 425, kept by pipeline Flexible conduit, the first pipe joint 420 and the aspiration line joint 405 that device 440 keeps.Even Connect device 450 and be connected to the end of axle 220.In like fashion, adapter 450, axle 220 and horse (together with keeping the frameworks of these parts) is attached to driver 250 (it is connected to become to reach 210 Width bar 260 and pin 270).

Suction tube (that is, between second pipe joint 425 and pin 270) between pump and eyes The length of line is the least (about a few inches).It addition, the suction of this length between pump and eyes Pipeline can be inflexibility (that is, it can be rigidity).Have between pump 170 and eyes The inflexibility pipeline of little length eliminate the surge associated with prior art systems.

In operation, motor 210 rotary shaft 220.Controller (not shown) controls motor 210 Operation.In like fashion, axle 220 can rotate any desired to produce with any desired speed Vacuum.Furthermore, it is necessary to time, axle 220 can be stopped or rotate in the opposite direction.With this Mode, can control motor 210 with rotary shaft 220 in either direction.When, upon rotating, axle 220 attract fluids by flexible pipe and to be used for pumping fluid and pass through aspiration line.

In another example, axle 220 can move toward and away from tubing retainer 440. In like fashion, the space between tubing retainer 440 and axle 220 can change so that flexible pipe Road can be clamped between axle 220 and tubing retainer 440 to varying degrees.In other words, Axle 220 can clamp the flexible conduit kept by tubing retainer 440 the most tightly not to be permitted to produce Permitted the pump action of leakage.Alternatively, when axle 220 moves away from tubing retainer 440, Flexible conduit is the most held, therefore causes leakage and less vacuum or pumping force.Can With control changeably axle 220 relative to tubing retainer 440 position with regulation pass through flexible pipe The leakage in road, and regulate again the vacuum produced by pump.

In (shown in Fig. 3) another example, axle 220 is relative to tubing retainer 440 Position can be fixing, and breather valve 165 may be used for produce leakage, this leakage adjust The vacuum that joint is produced by pump.In like fashion, breather valve 165 can be controlled changeably to control to deposit The vacuum capacity (by controlling the leakage rate by breather valve 165) being in aspiration line.

The control of aspiration vacuum can be based on the reading from suction pressure sensor 160.Suction Pressure transducer 160 is between pump and eyes.In like fashion, suction pressure sensor 160 Exactly read the pressure state in the aspiration line of eyes.Such reading can be used In accurately controlling the aspiration vacuum being fed to eyes.

Fig. 6 and 7 be respectively with the principle according to the present invention there is the crystalline of integral type suction pump The side view of the removable cartridge that body emulsifying machine head is used together and perspective view.Example at Fig. 6 and 7 In son, removable cartridge includes that the 405, first pipe joint 420 of aspiration line joint, pipeline keep Device 440, lever 330 and opening 605.Opening 605 is connected with each other with second pipe joint 425, As shown in Figure 5.One section of flexible conduit is between the first pipe joint 420 and opening 605. The removable cartridge 230 of Fig. 6 and 7 can be that can re-use or disposable.At an example In, removable cartridge can re-use, and flexible conduit is disposable.In another example, Removable cartridge is all disposable with flexible conduit.

The design of the present invention allows suction pump 170 very close to eyes 145.Suction pump 170 can be made With distance between eyes 145 is the least, about a few inches.By suction pump 170 near eyes 145 place the aspiration line of the shortest length of permission between pump 170 and eyes 145.And, The aspiration line of this length between pump 170 and eyes 145 can be rigidity (such as, It can be manufactured by rustless steel).This of aspiration line between composition pump 170 and eyes 145 is long Spend short non-flexible material and eliminate any surge effect associated with conventional phacoemulsification systems Should.

In conventional phacoemulsification systems, suction pump is positioned in control station.Scratching of long length Property pipeline (six feet or more than) is between suction pump and eyes.The flexibility of this long length Pipeline has the biggest flexibility, and it can respond the change of vacuum pressure and stretch.This flexibility is led Cause surge, as discussed previously.By suction pump is included in head (and make it very close to Eyes are placed) and there is the inflexibility pipeline of the shortest length between suction pump and eyes, this A little surges can be eliminated, and therefore causes safer and more effective operation.

In sum, it will be appreciated that the invention provides a kind of adding for phacoemulsification surgery Pressure infusion system.The invention provides a kind of perfusion pressure zone dress being precisely controlled fluid pressure Put.Herein by example, the present invention is described, and those of ordinary skill in the art is permissible Carry out various amendment.

Those skilled in the art is by considering description and the reality of the present invention disclosed herein Execute and will be apparent to other embodiments of the invention.Description and example should be regarded as merely Exemplary, the true scope and spirit of the invention is determined by the claims that follow.

Claims (12)

1. an ophthalmic surgical hand piece, including:

The driver coupled with horn, described horn couples with pin；

Suction pump integral part of with described head, described suction pump is arranged near described pin；Institute State suction pump to include:

Flexible conduit；

Motor；And

The axle coupled with described revolution, described axle includes for being pressed against described flexibility Helical structure on pipeline, described helical structure is positioned at the outside of described flexible conduit.

2. head as claimed in claim 1, also includes removable cartridge, wherein said detachably Cylinder includes:

For keeping the pipe keeper of described flexible conduit；And

For described removable cartridge being fixed to the bar of described suction pump.

3. head as claimed in claim 1, also include being positioned at described pin and described suction pump it Between the aspiration line of one section of rigidity.

4. head as claimed in claim 1, also include being positioned at described suction pump and described pin it Between suction pressure sensor.

5. head as claimed in claim 1, also includes that be arranged in parallel with described suction pump leads to Air valve, described breather valve is variably controlled, thus controls changeably to be produced by described suction pump Vacuum.

6. head as claimed in claim 2, wherein said axle can be toward and away from described removable Unload cylinder motion so that described axle determines by described suction pump relative to the position of described removable cartridge The vacuum pressure value produced.

7. an ophthalmic surgical hand piece, including:

The driver coupled with horn, described horn couples with pin；

Suction pump integral part of with described head, described suction pump is arranged near described pin, institute State suction pump to include:

Motor；And

The axle coupled with described revolution, described axle includes helical structure；And

Removable cartridge, described removable cartridge includes:

Pipe keeper；And

The one section of flexible conduit kept by described pipe keeper, this section of flexible conduit is positioned at institute State between axle and described pipe keeper；

Wherein said helical structure is used for being pressed against this section of flexible conduit, and wherein said spiral shell Rotation structure is positioned at the outside of described flexible conduit.

8. head as claimed in claim 7, wherein said removable cartridge also includes for by institute State removable cartridge and be fixed to the bar of described suction pump.

9. head as claimed in claim 7, also includes being positioned at described pin and described flexible conduit Between the aspiration line of one section of rigidity.

10. head as claimed in claim 7, also include being positioned at described suction pump and described pin it Between suction pressure sensor.

11. heads as claimed in claim 7, also include that be arranged in parallel with described suction pump leads to Air valve, described breather valve is variably controlled, thus controls changeably to be produced by described suction pump Vacuum.

12. heads as claimed in claim 7, wherein said axle can be protected toward and away from described pipe Gripping member is moved so that described axle determines by described suction pump relative to the position of described pipe keeper The vacuum pressure value produced.