CN105250071B - The device of the mobile weight compensating suspension of focusing objective len for laser system - Google Patents
The device of the mobile weight compensating suspension of focusing objective len for laser system Download PDFInfo
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- CN105250071B CN105250071B CN201510544460.5A CN201510544460A CN105250071B CN 105250071 B CN105250071 B CN 105250071B CN 201510544460 A CN201510544460 A CN 201510544460A CN 105250071 B CN105250071 B CN 105250071B
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- 239000000725 suspension Substances 0.000 title claims abstract description 15
- 230000003287 optical effect Effects 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 230000033001 locomotion Effects 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 5
- 230000001143 conditioned effect Effects 0.000 claims description 3
- 230000005465 channeling Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 230000005484 gravity Effects 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 description 9
- 238000010276 construction Methods 0.000 description 7
- 210000004087 cornea Anatomy 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 206010033670 Panic reaction Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 238000002430 laser surgery Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- Microscoopes, Condenser (AREA)
Abstract
Device of the one kind for the mobile weight compensating suspension of the focusing objective len (12) of laser system (10), including：Force generating apparatus, the force generating apparatus are used to generate the reaction force components (G) for the gravity for offsetting the focusing objective len (12)；The reaction force components (G) are transmitted on the focusing objective len (12) and allow the up/down compensation campaign of the focusing objective len by transmission device, the transmission device；Guide device, the guide device is for can movably guide the focusing objective len, so that the optical axial (O) of the focusing objective len at least keeps it in the orientation in space and preferably keeps the optical axial (O) of the focusing objective len in the position in space during the up/down compensation campaign of the focusing objective len (12).
Description
The application is entitled " device of the mobile weight compensating suspension of the focusing objective len for laser system ", state
The border applying date is that March 3, international application no PCT/EP2010/001319, national application number in 2010 are
201080065117.8 application for a patent for invention divisional application.
Technical field
The present invention relates to the mobile weight compensating suspensions of the focusing objective len of laser system.The laser system preferably carries
For pulsed laser radiation, which is focused onto the desired locations that radiation will act on by focusing objective len.
Background technology
In the treatment for being related to living tissue and organize the occasion being in direct contact between laser system, the energy of focusing objective len
Mobile weight compensating suspension is not only but is especially expected to.For example, being performed an operation to human eye with laser surgery
In the case of, when this frequent occurrence when other tissues of cornea or eyes manufacture notch using ultra-short pulse laser radiation
It is in direct contact.In this case, it is in direct contact to be intended to be precisely located relative to laser system in the direction of radiation propagation and wait for
Treated eyes.In general, suitable interface unit (interface unit) (patient fittings' device) is connected focusing objective len
Before, and realize the physical connection of eyes and laser system.Interface unit, which usually has, is coupled to being used for for focusing objective len
The retainer of contact element, contact element will be accessed eyes and by the material that laser radiation energy penetrates are made.For example, connecing
Tactile element can be the planar underside (plane underside) for flattening cornea.
Focusing objective len in laser system is usually poly-lens system, and sizable weight may be placed on balance.
For this focusing objective len, several kilograms are not rare.Obviously, in ocular surgical, whole weight of focusing objective len must
It must cannot rest on just treated eyes.Therefore, it is provided for the weight compensating suspension of focusing objective len.For example, this
In the case of weight compensating scheme, the power that focusing objective len is still applied on eyes is reduced to several newton (for example, 1 to 2N).This
So that if patient lifts his or her head in spite of oneself suddenly, for example, in panic reaction, it can be leniently and to eyes
Offset up focusing objective len with not injuring.
The example of the weight compensating suspension of focusing objective len is provided in US5336215.There, the weight of object lens is by spring system
Compensation, object lens by spring system and relative to frame it is mobile suspension in the frame.
Invention content
The object of the present invention is to provide the reliable and smart of a weight compensating for the focusing objective len in laser system
True function scheme.
According to the present invention, the mobile weight compensating suspension of the focusing objective len of laser system is provided for this purpose,
Including：
Force generating apparatus, the force generating apparatus are used to generate the reaction force components for the weight for offsetting the focusing objective len；
The reaction force components are transmitted on the focusing objective len and described in allowing by transmission device, the transmission device
The up/down compensation campaign of focusing objective len；With
Guide device, the guide device is for can movably guide the focusing objective len, so that in the focusing objective len
In the case of up/down compensation campaign, the optical axial of the focusing objective len at least keeps it in the orientation in space and preferred
Ground keeps it in the position in space.
In the case of the up/down compensation campaign of the object lens, pass through conglomeration described in the guide means guide
Mirror prevents the undesirable inclination of the optical axial of the object lens." up/down compensation campaign " is herein understood to institute
State the movement of focusing objective len upward or downward relative to the laser system.Therefore, no matter the compensation campaign of the object lens, described
Optical axial keeps specific direction, such as the optical axial for just treated human eye for just treated object.Herein
It is noted that the present invention can be used for the laser system of any application purpose in principle, particularly can be used in any material
The laser system to work on (including dead substance), and never it is limited to ophthalmic applications purpose.
The force generating apparatus may include counterweight (counterweight), and the quality of the counterweight is for generating at least partly
The reaction force components, particularly whole reaction force components.The counterweight can be made of single weighted, or
Alternatively, it is made of multiple (at least two) individual wt pts, such as multiple individual wt pts can be can change
Quantity or/and it can change the mode of position relative to each other and be used, the individual wt pts can be also combined into individually
Total weight, and individually taken out from the total weight.By this variation of the counterweight, it is particular enable to weight compensating essence
True ground taring (taring).
Moreover, in the present invention, should not exclude to generate the part reaction force components by least one elastic element.
The shortcomings that due to usually with the associated effective force of elastic element depending on distance (elasticity depends on the deformation state of elastic element),
The force generating apparatus preferably generates the reaction force components not only by elastic element.However, by one or more
It is also imaginabale that elastic element is combined with counterweight, such as the purpose for the desired power-of execution apart from dependence.
The transmission device is preferably the form of rocking bar, and the reaction force components act on the side of rocking bar, described poly-
The weight of focus objective lens acts on the other side of rocking bar.Functionally, the rocking bar can be with lever scale (weighing
Beam it) compares.
For example, the rocking bar is formed by least one body of rod, a lever arm of at least one body of rod is connected to institute
Focusing objective len is stated, and another lever arm of at least one body of rod is connected to the force generating apparatus.Understand, two
Or more this body of rod can be adjacent to, be provided parallelly and at a certain distance to form the rocking bar.The power generates
Point of force application of the device on the body of rod can be conditioned along the body of rod, and then torque of the adjustment effect on the body of rod.
Generally, it is preferred to the pivot center of at least one point of force application of the force generating apparatus on the rocking bar and the rocking bar away from
From can be conditioned.
The side (i.e. on a lever arm) of the rocking bar is applied to generate at least partly described reaction force components
The use of counterweight has in the required movement travel of whole operation of the focusing objective len makes generated reaction force divide
Measure the constant advantage of maximum possible.It is expressly moved relative to the rocking bar by the center of gravity of the counterweight, the power-of draft hitch
Distance feature curve can clearly be set.This makes it possible to taring, even if having impartible counterweight.On the other hand, if
The force generating apparatus includes at least one elastic element, in addition to typical spring-like power-distance feature of elastic element, suspension
The power of device-distance feature curve can be set, since the point of force application of elastic element can be moved along the bar or along the rocking bar
It is dynamic.
The focusing objective len is preferably supported on the rocking bar so that its can be centered around at a certain distance from it is parallel
It is rotated relative to the rocking bar in the rotation axis that the pivot center of the rocking bar extends.For the optical axial of the object lens
The stability of spatial position, it is proposed that focusing objective len is supported on the rocking bar with the distance that the pivot center away from the rocking bar can change
On.If the rocking bar is inclined by, the focusing objective len can be moved simultaneously, it is meant that be changed and the rocking bar axis
Distance.In this way, the object lens can along straight line rather than moved up and down along circular path, i.e., the object lens are kept
Its lateral position (laterally meaning at a right angle with the object lens axis) relative to the object lens to work.
The rolling bearing of the rocking bar is preferably low friction form, and can for example pass through plastic sliding bearing or the axis of rolling
It holds and is performed.Low friction is dreamboat, is to avoid the frictional force of covering (overlaid) to distort the suspension as far as possible
Effective power-distance feature of device.
In a preferred embodiment, the focusing objective len is supported on the support surface construction of the rocking bar
(arrangement) on, so that it can move freely.Particularly, the support surface construction can be that the object lens is made to be relaxed
Ground is placed on the form on the rocking bar.For example, support surface construction can by the rocking bar at least one body of rod extremely
A few longitudinal fluting is formed, the object lens can be used suitable supporting pin or other support constructions and be inserted into it is described at least
In one groove.For example, the groove can open upwards or/and it can be relative to the vertical of the related lever arm that the object lens are firmly grasped
It is opened to range to front or rear so that the support construction of the object lens can be inserted into the groove from above or below.
Understand, for example, support surface construction is alternatively one or more closed (enclosed)
The structural form of slot hole, the object lens engage each slot hole by suitable supporting projections.It is further appreciated that, according to modification, institute
Stating support surface construction can be formed on the object lens, be used to support the suitable support knot structurally in the support surface
Structure can be formed on the rocking bar.
Under any circumstance, support of the object lens on the rocking bar preferably not only makes the rotation in the rocking bar
Object lens described in motion process can be rotated relative to the rocking bar, and make the rotation axis of the object lens and the rocking bar
The distance between axis can radially change (diametrically opposite in rocking bar axis).
The guide device is preferably straight with the channeling direction parallel with the optical axial of the focusing objective len
Line guides form.The guide device preferably has to be prevented in the case of the up/down compensation campaign of the focusing objective len
The guide structure of the movement of the crosscutting optical axial of focusing objective len.This is useful for stablizing the object lens in the position in space
's.
For example, the sliding block that the guide device may include linear bearing and is guided in it.The sliding block can be fixed
On the focusing objective len.The linear bearing may also include at least one guiding groove.The sliding block may also include at least one
Guide protrusion, at least one guide protrusion is fitted to be with the guiding groove so that sliding block movement in the horizontal direction
The mode being avoided by works.In this way, make it possible the focusing objective len in the guiding of vertical direction, the conglomeration
The optical axial of mirror can keep its alignment and position in the case of its compensation campaign relative to initial position.In order to
This purpose, the guiding groove can be formed with undercutting (undercut), and the guide protrusion is engaged in undercutting.
According to another viewpoint, the present invention provides a kind of laser system, including：
Lasing source, preferably pulsed laser radiation；
Focusing objective len, for making the laser emission focus, the focusing objective len has optical axial；
Interface unit, the interface unit are disposed on the radiation outlet side of the focusing objective len, and preferably by energy
It is discretely connected to the focusing objective len, the interface unit has the contact element penetrated for the laser radiation energy, institute
Contact element is stated to be placed on the object that the laser emission will be used to work on it.
Draft hitch, in particular the above-mentioned type, the draft hitch are the mobile weight compensating of the focusing objective len
Suspension, the device have containing there are two the rocking bar of rocker arm, and the rocking bar is supported on housing member so that the rocking bar energy
Rocking bar axis around the laser system is rotated, the focusing objective len be supported on one in the rocker arm so that
The focusing objective len can be rotated around the rotation axis for being parallel to the rocking bar axis relative to the rocking bar, for generating compensation
The counterweight of the reaction force components of at least most of weight of the focusing objective len is attached in another rocker arm, the anti-work
The firmly at least most of weight of focusing objective len described in component compensation, described device also have for along the focusing objective len
The optical axial guides the guiding system of the focusing objective len in which can move linearly.
Description of the drawings
Below based on attached drawing, the present invention is further explained.
Fig. 1 schematically and show not to scale at all for the cornea of human eye or other tissue parts manufacture cut
The embodiment of the laser system of mouth.
Specific implementation mode
Laser system is marked as 10 as a whole, only shows the " deferent segment (output of laser system in the accompanying drawings
Stage) ", i.e., the patient fittings' device for substantially only showing focusing objective len 12 and being arranged on the radiation outlet side of focusing objective len 12
13.Focusing objective len 12 can be hung by weight compensating and movably by draft hitch 14.If mentioned here, " weight is mended
Repay ", mean the weight of at least overwhelming majority of compensation object lens 12.The especially small residual fraction of object lens weight can remain as
It does not compensate, such as the weight that the order of magnitude is several newton.Focusing objective len 12 will be by swashing in a manner of not shown in more detail
What photosystem 10 provided focuses on the focal position waited in removed ocular tissue without burnt laser irradiation ray beam.For example, being made
Laser emission has in pulse width and low infra-red range within the scope of femtosecond (for example, in about 1000nm and greatly
Between about 1110nm) or ultraviolet range in and the wavelength preferably on about 300nm.
In the embodiment shown in fig. 1, draft hitch 14 has the force generating apparatus containing counterweight 16, the force generating apparatus
Generate the weight component being perpendicularly oriented toIt is intended to the weight that should compensate focusing objective len 12 at least partly with counterweight.Suspension
Device 14 further includes the transmission device of 18 form of rocking bar, and the right hand end of rocking bar 18 in Fig. 1 can be separately connected to counterweight 16,
And another, the left-hand end of rocking bar 18 in Fig. 1 have the bearing block 20 for can discretely couple with focusing objective len 12.Counterweight 16
It can be moved along the suitable lever arm of rocking bar, so that the effective point of force application K of counterweight can be changed, to effective reaction
Torque can be changed.
Rocking bar 18 is carried by bearing 22 so that rocking bar 18 can be centered around object lens 12 position and counterweight 16 position it
Between a distance at rotational axis x rotation.Bearing 22 is via one or more on the support section 23 schematically indicated
21 supporting crank 18 of connection cheek, support section 23 itself can be arranged to static relative to other components of laser system 10
Or it can move.
For example, rocking bar 18 can be with square round (oblong), particularly substantially straight bar (lever rod) 19, bar
19 one end are coupled to object lens 12, and the other end is coupled to counterweight 16.Expressly, two this bars 19 are provided in parallel with each other
In the both sides (that is, in direction of observation of Fig. 1, in the back and front of object lens 12) of object lens 12.However, only one bar will into
It is mentioned in the description of one step, but following explanations is applied similarly to two bars.
In the example shown, above mentioned bearing block 20 bar 19 it is lateral made of groove 24 (being indicated by dotted line)
It is formed, groove 24 open more than on side, i.e., is upwards and to the left in figure.Slot bottom (floor) 24a of the groove 24 is formed
The support surface of trunnion 26, trunnion 26 are laterally away from object lens 12 and stretch into groove.Focusing objective len 12 passes through its trunnion
26 loosely rest on bar 19.If rocking bar 18 is rotated, not only object lens 12 are rotated around axle journal axis relative to rocking bar 18,
And trunnion 26 is moved in bearing block 20.With the movement, trunnion 26 and the radial distance of rotational axis x change.
No matter object lens 12 are moved upwardly or downwardly, this makes it possible to that Liar axes O is kept in the position and direction in space not changed
Become.So that trunnion 26 moves in bearing block 20 in the case where not having friction as far as possible, such as trunnion 26 can be held
The ring 28 on sliding or rolling bearing is carried, ring 28 can roll on the slot bottom 24a of groove 24.
Draft hitch 14 further includes the guiding system for the guided focused object lens of vertical linearity 12.And it is moved in bearing block 20
The possibility of dynamic trunnion 26 generates the object lens axes O when object lens 12 move and is guided in the precondition of the constant position in space
System ensures that object lens axes O is not actually inclined by or is moved transversely (to axes O).
In an illustrated embodiment, guiding system includes relative to 12 fixed linear bearing 30 of focusing objective len and being guided
On linear bearing 30 and the sliding block 32 that is fixed on focusing objective len 12.Linear bearing 30 is provided with guiding groove 34, guiding
Slot 34 is the form of undercutting and the guide protrusion 36 of engagement slide 32.In the embodiment shown in fig. 1, guide protrusion 36 is transversal
Face is T shapes, and two T side arms 36a of guide protrusion 36 are so that water of the focusing objective len 12 far from linear bearing 30 (in Fig. 1 to the right)
The mode that flat (transverse direction) movement is prevented from engages undercutting guiding groove 34.In addition, T side arms 36a and the engagement of undercutting guiding groove 34 are true
Focusing objective len 12 is protected not tilt.Focusing objective len 12 is guided always device and is maintained at specific direction.
Guide protrusion 36 and the engagement of guiding groove 34 provide sufficient vertical play, to ensure focusing objective len 12 in Vertical Square
To necessary movement travel.
If focusing objective len 12 is placed to (not shown) on eyes to be treated, conglomeration with its patient fittings' device 13
Mirror 12 can vertically upward be deviated by counter-pressure small caused by eyes.The compensation campaign of focusing objective len 12 is come
It says, trunnion 26 is moved by rolling (or being replaced by sliding) along the slot bottom 24a of groove 24, and rocking bar 18 surrounds rocking bar axis
X is rotated clockwise, while object lens 12 are rotated around the axis of trunnion 26 relative to rocking bar 18.In contrast, assume in imagination
In the case of, if focusing objective len 12 is rigidly connected to rocking bar 18, the movement upward or downward of focusing objective len 12 will cause
Oblique optical axes O.However, in an illustrated embodiment, due to mobile support of the object lens 12 on rocking bar 18, and due to
Object lens 12 are guided by the straight line of linear bearing 30, and this inclination is excluded.
Claims (7)
1. a kind of device of the mobile weight compensating suspension of focusing objective len for laser system, including：
Force generating apparatus, the force generating apparatus are used to generate the reaction force components for the weight for offsetting the focusing objective len；
Transmission device, the transmission device be rocking bar form, the rocking bar can be centered around the focusing objective len position and
Pivot center rotation between the position of the force generating apparatus, the focusing objective len is loosely rested on described by trunnion
On rocking bar, one end of the rocking bar can be separately connected to the force generating apparatus, and the other end of the rocking bar, which has, is used for energy
The bearing block discretely coupled with the focusing objective len, the bearing block the rocking bar it is lateral made of groove formed, institute
The slot bottom for stating groove forms the support surface of the trunnion, and the trunnion is laterally away from the focusing objective len and stretches into described
In groove, the trunnion can be moved by rolling or sliding along the slot bottom of the groove, to keep the conglomeration
The reaction force components are transmitted on the focusing objective len and described in allowing by the orientation of the optical axial of mirror, the transmission device
The up/down compensation campaign of focusing objective len；With
Guide device, the guide device for can movably guide the focusing objective len so that the focusing objective len it is upward/
In the case of downward compensation campaign, the orientation of the optical axial of the focusing objective len is kept.
2. the apparatus according to claim 1, wherein the force generating apparatus includes counterweight, the quality of the counterweight is for generating
At least partly described reaction force components.
3. the apparatus according to claim 1, wherein at least one force effect of the force generating apparatus on the rocking bar
Point can be conditioned at a distance from the pivot center of the rocking bar.
4. the apparatus according to claim 1, wherein the focusing objective len is supported on the rocking bar, so that the focusing
Object lens can be centered around the rotation axis for being parallel to the pivot center of the rocking bar and extending at a distance relative to the rocking bar
Rotation.
5. device according to claim 4, wherein the focusing objective len can be become with the pivot center away from the rocking bar
The distance of change is supported on the rocking bar.
6. the apparatus according to claim 1, having relative to described wherein the guide device is rectilinear guide form
The parallel channeling direction of the optical axial of focusing objective len.
7. device according to claim 6, wherein the guide device has guide structure, the guide structure is described
The movement of the crosscutting optical axial of the focusing objective len is prevented in the case of the up/down compensation campaign of focusing objective len.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510544460.5A CN105250071B (en) | 2010-03-03 | 2010-03-03 | The device of the mobile weight compensating suspension of focusing objective len for laser system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201080065117.8A CN102834755B (en) | 2010-03-03 | 2010-03-03 | For the device of the mobile weight compensating suspension of the focusing objective len of laser system |
| CN201510544460.5A CN105250071B (en) | 2010-03-03 | 2010-03-03 | The device of the mobile weight compensating suspension of focusing objective len for laser system |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080065117.8A Division CN102834755B (en) | 2010-03-03 | 2010-03-03 | For the device of the mobile weight compensating suspension of the focusing objective len of laser system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105250071A CN105250071A (en) | 2016-01-20 |
| CN105250071B true CN105250071B (en) | 2018-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510544460.5A Active CN105250071B (en) | 2010-03-03 | 2010-03-03 | The device of the mobile weight compensating suspension of focusing objective len for laser system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12329685B2 (en) | 2021-06-30 | 2025-06-17 | Amo Development, Llc | Counterbalance mechanism in ophthalmic laser system employing a variable beam balance to provide a variable net load |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4896015A (en) * | 1988-07-29 | 1990-01-23 | Refractive Laser Research & Development Program, Ltd. | Laser delivery system |
| US5336215A (en) * | 1993-01-22 | 1994-08-09 | Intelligent Surgical Lasers | Eye stabilizing mechanism for use in ophthalmic laser surgery |
| DE102005001249A1 (en) * | 2005-01-11 | 2006-07-20 | Carl Zeiss Meditec Ag | Safety mechanism for a laser treatment device |
| WO2008098381A1 (en) * | 2007-02-14 | 2008-08-21 | Ziemer Holding Ag | Ophthalmological device for resolving eye tissue |
-
2010
- 2010-03-03 CN CN201510544460.5A patent/CN105250071B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12329685B2 (en) | 2021-06-30 | 2025-06-17 | Amo Development, Llc | Counterbalance mechanism in ophthalmic laser system employing a variable beam balance to provide a variable net load |
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| CN105250071A (en) | 2016-01-20 |
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Effective date of registration: 20200417 Address after: Fribourg Patentee after: ALCON, Inc. Address before: Erlangen Patentee before: WAVELIGHT GmbH |