CN117281684A - Eyeball adsorption device and eyeball adsorption system - Google Patents
Eyeball adsorption device and eyeball adsorption system Download PDFInfo
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- CN117281684A CN117281684A CN202311578041.4A CN202311578041A CN117281684A CN 117281684 A CN117281684 A CN 117281684A CN 202311578041 A CN202311578041 A CN 202311578041A CN 117281684 A CN117281684 A CN 117281684A
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- 210000005252 bulbus oculi Anatomy 0.000 title claims abstract description 257
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 25
- 239000012530 fluid Substances 0.000 claims abstract description 67
- 210000001508 eye Anatomy 0.000 claims description 8
- 230000001419 dependent effect Effects 0.000 claims description 3
- 210000004087 cornea Anatomy 0.000 description 44
- 238000007493 shaping process Methods 0.000 description 17
- 230000006378 damage Effects 0.000 description 16
- 238000000034 method Methods 0.000 description 12
- 230000002829 reductive effect Effects 0.000 description 11
- 238000004132 cross linking Methods 0.000 description 10
- 208000014674 injury Diseases 0.000 description 10
- 208000027418 Wounds and injury Diseases 0.000 description 9
- 238000012544 monitoring process Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- 238000000465 moulding Methods 0.000 description 7
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- 201000009310 astigmatism Diseases 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000004410 intraocular pressure Effects 0.000 description 2
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- 238000009530 blood pressure measurement Methods 0.000 description 1
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- 238000004049 embossing Methods 0.000 description 1
- 231100000040 eye damage Toxicity 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009957 hemming Methods 0.000 description 1
- 201000006318 hyperopia Diseases 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/10—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges for stereotaxic surgery, e.g. frame-based stereotaxis
- A61B90/14—Fixators for body parts, e.g. skull clamps; Constructional details of fixators, e.g. pins
- A61B90/17—Fixators for body parts, e.g. skull clamps; Constructional details of fixators, e.g. pins for soft tissue, e.g. breast-holding devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F2009/0035—Devices for immobilising a patient's head with respect to the instrument
- A61F2009/0043—Devices for immobilising a patient's head with respect to the instrument by supporting the instrument on the patient's head, e.g. head bands
- A61F2009/0052—Devices for immobilising a patient's head with respect to the instrument by supporting the instrument on the patient's head, e.g. head bands the instrument being supported on the patient's eye
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Ophthalmology & Optometry (AREA)
- Neurosurgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Oral & Maxillofacial Surgery (AREA)
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- Vascular Medicine (AREA)
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- External Artificial Organs (AREA)
Abstract
The invention relates to the technical field of medical equipment, in particular to an eyeball adsorption device and an eyeball adsorption system, which can reliably adsorb an eyeball to keep the eyeball relatively stable, wherein the eyeball adsorption device comprises: an outer barrel having a lower opening and including an annular lower rim at a lower end for contact with an eyeball; an inner core body extending axially within the outer cylinder body and including a concave bottom surface for eyeball suction at a lower end; a flow inlet communicated with a flow inlet cavity formed between the inner wall of the outer cylinder and the outer surface of the inner core; an outflow port communicated with the concave bottom surface via an outflow channel in the inner core body, wherein the outflow channel starts from the concave bottom surface; the fluid entering the inflow cavity from the inflow opening is pumped out from the outflow opening through the outflow channel, so that eyeballs are close to the concave bottom surface.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an eyeball adsorption device and an eyeball adsorption system.
Background
Cornea crosslinking techniques can be used for shaping the cornea to treat refractive problems such as myopia, hyperopia, or reduced astigmatism and irregular astigmatism by altering the cornea morphology, and to create a multifocal cornea morphology that imparts a high spherical aberration or multifocal to the cornea for the purpose of treating presbyopia.
However, the prior art has limited control over the corneal crosslinking process, and it is difficult to precisely control the corneal crosslinking process, and thus it is difficult to precisely control the morphology modeling after corneal crosslinking.
In one control scheme, precise control of the corneal morphology can be achieved by embossing the cornea. But this requires a shaped mold to closely conform to the cornea under pressure. If the mold is used to press against the cornea, a positive pressure is required to be applied to the ocular sphere, which may cause an increase in intraocular pressure. Due to the long time of cornea shaping, prolonged ocular hypertension may adversely affect the patient's optic nerve.
In another control scheme, a contact lens may be used, on which an array of ultraviolet light sources is mounted, in proximity to the cornea. The degree of crosslinking is controlled by controlling the intensity of the light to alter the morphology of the cornea. However, this method requires that the relative position between the contact lens and the cornea be kept unchanged, so that the relative position of the contact lens is not changed when the eyeball rotates, and the shaping position is offset, and the precision is reduced. However, this also requires a certain force between the contact lens and the cornea (or eyeball) that keeps the relative position of the two constant.
Disclosure of Invention
The embodiment of the invention provides an eyeball adsorbing device and an eyeball adsorbing system, which can reliably adsorb an eyeball so as to keep the eyeball relatively stable.
According to an embodiment of one aspect of the present invention, there is provided an eyeball adsorbing device including:
an outer barrel having a lower opening and including an annular lower rim at a lower end for contact with an eyeball;
an inner core body extending axially within the outer cylinder body and including a concave bottom surface for eyeball suction at a lower end;
a flow inlet communicated with a flow inlet cavity formed between the inner wall of the outer cylinder and the outer surface of the inner core;
an outflow port communicated with the concave bottom surface via an outflow channel in the inner core body, wherein the outflow channel starts from the concave bottom surface;
the fluid entering the inflow cavity from the inflow opening is pumped out from the outflow opening through the outflow channel, so that eyeballs are close to the concave bottom surface.
Preferably, in any of the embodiments,
the inflow port is arranged on the side wall of the outer cylinder body.
Preferably, in any of the embodiments,
the outflow port is positioned at the upper end of the outer cylinder body.
Preferably, in any of the embodiments,
the concave bottom surface is provided with a bottom surface pressure sensor.
Preferably, in any of the embodiments,
the concave bottom surface is provided with a radial slot extending from the center to the edge of the concave bottom surface.
Preferably, in any of the embodiments,
the annular lower edge has a radially inwardly tapered shape.
Preferably, in any of the embodiments,
the annular lower edge is lower than the lowest end of the concave bottom surface.
According to an embodiment of another aspect of the present invention, there is provided an eyeball adsorbing system including:
an eyeball adsorbing device as described above;
a flow conveyor connected to the flow inlet;
an aspirator connected to the outflow port;
when the aspirator works, at least part of the fluid input into the inflow cavity from the inflow port by the fluid delivery device is pumped out from the outflow port through the outflow channel.
Preferably, in any embodiment, further comprising:
an eye support system, comprising: and the eyeball is supported towards the eyeball adsorption device, and the inflation height of the supporting airbag along the axial direction is dependent on the inflation degree in the supporting airbag.
Preferably, in any of the embodiments,
the eyeball support system includes: and the air supply device is communicated with the supporting air bag.
According to the eyeball adsorbing device and the eyeball adsorbing system provided by the embodiments of the invention, the eyeball can be reliably adsorbed so as to keep the eyeball relatively stable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following discussion will discuss the embodiments or the drawings required in the description of the prior art, and it is obvious that the technical solutions described in connection with the drawings are only some embodiments of the present invention, and that other embodiments and drawings thereof can be obtained according to the embodiments shown in the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of an eyeball adsorbing device according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of an eyeball adsorbing system according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings, wherein it is apparent that the embodiments described are only some, but not all embodiments of the present invention. All other embodiments, which can be made by a person of ordinary skill in the art without the need for inventive faculty, are within the scope of the invention, based on the embodiments described in the present invention.
The embodiment of the invention provides an eyeball adsorbing device and an eyeball adsorbing system, which can reliably adsorb an eyeball so as to keep the eyeball relatively stable.
According to an embodiment of one aspect of the present invention, there is provided an eyeball adsorbing device including:
an outer barrel having a lower opening and including an annular lower rim at a lower end for contacting the cornea;
an inner core body extending axially within the outer cylinder body and including a concave bottom surface for eyeball suction at a lower end;
a flow inlet communicated with a flow inlet cavity formed between the inner wall of the outer cylinder and the outer surface of the inner core;
an outflow port communicated with the concave bottom surface through an outflow channel in the inner core body;
wherein fluid entering the inflow cavity from the inflow port is pumped away from the outflow port via the outflow channel, so that a cornea is proximate toward the concave bottom surface.
In this way, when the eyeball adsorbing device is used, the lower opening of the outer cylinder body faces the upper surface of an eyeball to be adsorbed, the annular lower edge of the outer cylinder body is in contact with the eyeball, the concave bottom surface of the inner cylinder body is aligned with the eyeball but is not in contact with the eyeball, a certain gap (which can be called an attraction gap) is formed between the eyeball adsorbing device and the eyeball, an inflow cavity formed between the inner wall of the outer cylinder body and the outer surface of the inner cylinder body is communicated with the gap, an outflow channel starting from the concave bottom surface is also communicated with the gap, so that an internal circulation cavity communicated with each other can be formed between the eyeball adsorbing device and the eyeball together, and the whole internal circulation cavity (comprising the inflow cavity, the outflow channel and the attraction gap between the eyeball adsorbing device and the eyeball) can be filled with fluid input into the inflow cavity from the inflow opening. When fluid is sucked from the outflow port, the fluid in the inner circulation cavity is sucked from the concave bottom surface through the outflow channel, so that negative pressure is formed at the suction gap between the concave bottom surface and the eyeball to suck the eyeball towards the concave bottom surface to be close, and a proper adsorption force is formed between the eyeball and the concave bottom surface of the eyeball adsorption device, so that the relative position between the eyeball and the eyeball adsorption device is ensured to be unchanged, and the eyeball can be correspondingly treated.
As can be seen from the above, the eyeball adsorbing device can generate an adsorbing force to ensure that the relative position between the eyeball and the eyeball adsorbing device remains unchanged, so as to avoid the influence of the change of the relative position caused by the rotation of the eyeball on the therapeutic effect. It should be emphasized that a thin fluid layer may be present between the concave bottom surface of the eyeball adsorbing means and the eyeball, on the one hand, the relative position between the eyeball and the concave bottom surface is kept stable by forming a negative pressure adsorbing force between the concave bottom surface and the eyeball by the sucking operation, and on the other hand, the eyeball is contacted with the thin fluid layer (without directly contacting the eyeball with the concave bottom surface) by the flexibility (elasticity), so that the risk of injury possibly caused by the direct contact of the eyeball with the concave bottom surface can be avoided or reduced.
Therefore, the eyeball adsorbing device provided by the embodiment of the invention can reliably adsorb the eyeball so that the eyeball is kept relatively stable, thereby being beneficial to the treatment operation of the eyeball.
The ocular suction device may be used in different ophthalmic medical applications, for example, in corneal shaping (e.g., corneal cross-linking shaping), or scleral cross-linking, etc.
Embodiments of the present invention will be described below mainly by way of example of shaping the cornea, but it should be understood that the eyeball adsorbing device according to each embodiment of the present invention may be used for applications other than shaping the cornea, which are all within the scope of the present invention.
Alternatively, in any of the embodiments, the ocular suction device may be used for corneal shaping (e.g., corneal cross-linking shaping).
In this way, when the eyeball adsorbing device is used, the lower opening of the outer cylinder body faces the cornea of an eyeball to be adsorbed, the annular lower edge of the outer cylinder body is in contact with the cornea, the concave bottom surface of the inner cylinder body is aligned with the cornea but is not in contact with the cornea, a certain gap (which can be called an attraction gap) is formed between the eyeball adsorbing device and the cornea, an inflow cavity formed between the inner wall of the outer cylinder body and the outer surface of the inner cylinder body is communicated with the gap, an outflow channel starting from the concave bottom surface is also communicated with the gap, so that an internal circulation cavity communicated with each other can be formed between the eyeball adsorbing device and the cornea together, and the whole internal circulation cavity (comprising the inflow cavity, the outflow channel and the attraction gap between the eyeball adsorbing device and the cornea) can be filled with fluid input into the inflow cavity from the inflow opening. When fluid is sucked from the outflow port, the fluid in the internal circulation chamber is sucked from the concave bottom surface via the outflow passage, so that negative pressure is formed at the suction gap between the concave bottom surface and the cornea to suction the cornea toward the concave bottom surface, thereby forming appropriate suction force and shaping force between the cornea and the concave bottom surface of the shaping mold (i.e., the eyeball suction device), whereby it is possible to ensure that the relative position between the cornea and the shaping mold (i.e., the eyeball suction device) remains unchanged, and the cornea can be shaped (e.g., cross-linked shaped) in accordance with a predetermined shape defined by the mold.
As can be seen from the above, by the eyeball adsorbing device, on one hand, the adsorbing force can be generated to ensure that the relative position between the cornea and the molding die is kept unchanged, so as to avoid the influence on the treatment effect caused by the reduction of the molding precision due to the change of the relative position caused by the rotation of the eyeball, thereby maintaining the molding force on the cornea to ensure the cornea molding effect, and on the other hand, the proper small molding acting force can be formed by the negative pressure suction between the cornea and the molding die, and no large positive pressure is required to be applied to the eyeball from the die as in the prior art, thereby reducing the risk of the rise of the intraocular pressure due to the high pressure on the premise of ensuring the sufficient molding acting force.
Optionally, in any embodiment, the eyeball adsorbing device is used for scleral crosslinking.
Preferably, in any embodiment, the inlet is provided on a side wall of the outer cylinder. Therefore, the position of the inlet can be conveniently selected in a larger range of the side wall of the outer cylinder body according to actual conditions, so that the actual operation is facilitated.
Alternatively, in either embodiment, the inlet port may be provided at the upper/top end of the outer barrel.
Optionally, in any embodiment, the inlet is aligned with an upper end of the inlet chamber. In this case, the inlet is approximately flush with the upper end of the inflow cavity, so that the eyeball adsorbing device is convenient to manufacture and mold.
Optionally, in any embodiment, the inlet is higher than the upper end of the inlet chamber. In case the inlet is higher than the upper end of the inlet chamber, the risk of reverse backflow of fluid, in particular liquid, in the inlet chamber can be reduced based on the action of gravity.
Alternatively, in any embodiment, the inlet port may be lower than the upper end of the inlet chamber.
Optionally, in any embodiment, the inlet communicates with the inlet chamber via an inlet passage.
Optionally, in any embodiment, the inlet channel extends obliquely downward in a radially inward direction. In this way, the inlet is higher than the upper end of the inlet cavity, and the risk of reverse backflow of fluid (particularly liquid) in the inlet cavity can be reduced based on the action of gravity.
Preferably, in any embodiment, the outflow port is located at the upper end of the outer barrel.
Alternatively, in either embodiment, the outflow opening may be provided on the side wall of the outer cylinder.
Optionally, in any embodiment, the inlet is provided on an inlet boss protruding from an outer surface of the outer barrel. In this way, it may be convenient to connect the fluid transport to the inlet port using a suitable connector as required.
Optionally, in any embodiment, the flow conveyor is connected to the inlet by a flow tee.
Optionally, in any embodiment, the outflow port is provided on an outflow protrusion protruding from an outer surface of the outer cylinder. In this way, it is possible to facilitate the connection of the aspirator to the outflow opening using a suitable joint as desired.
Optionally, in any embodiment, the aspirator is connected to the outflow port by an outflow tee.
Optionally, in any embodiment, the outflow channel starts at a center of the concave bottom surface. Thus, fluid entering the inlet chamber from the inlet port is drawn from the outlet port through the outlet channel from the center of the concave floor.
Preferably, in any embodiment, the concave bottom surface is provided with a radial slot extending from the center to the edge of the concave bottom surface. In this way, the fluid circulation in the inner circulation cavity can be effectively ensured, the risk of fluid blockage (for example, when the eyeball is attracted and attached to the concave bottom surface by negative pressure, the eyeball tissue can be blocked from circulation due to local deformation or expansion) is reduced, so that the fluid can still flow through the radial groove, and the fluid can be pumped away from the concave bottom surface through the outflow channel to maintain the negative pressure attraction force between the eyeball and the concave bottom surface. It will be appreciated that the depth of the radial grooves should be moderate, on the one hand, not too shallow to exacerbate the risk of flow obstruction, and on the other hand, too deep to exacerbate the risk of eye damage due to localized overstresses.
Alternatively, in any embodiment, the radial slots have a depth of 0.05-0.35mm, such as 0.1-0.2mm. In this way, too deep radial grooves can be avoided from leaving marks on the eyeball (e.g., cornea) during the treatment of the eyeball (e.g., during the shaping of the cornea) to affect the treatment or cause damage to the eyeball.
Alternatively, in any embodiment, the radial slot has a width of 0.1-0.3mm, such as 0.15-0.20mm. In this way, too wide a radial groove can be avoided from leaving marks on the eyeball (e.g., cornea) during the treatment of the eyeball (e.g., during the shaping of the cornea) to affect the treatment or cause damage to the eyeball.
Optionally, in any embodiment, the slot edge of the radial slot has a rounded hemming structure. In this way, excessive pressure at the edge of the notch of the radial groove can be avoided to cause marks on the eyeball (such as cornea) during the eyeball treatment process (such as cornea shaping process) to influence the treatment effect or cause eyeball damage.
Optionally, in any embodiment, an annular groove intersecting the radial groove is provided on the concave bottom surface. In this way, the annular grooves and the radial grooves mutually intersect to form a flow path network, so that the fluid circulation in the internal circulation cavity can be further ensured, and the risk of flow blockage is reduced.
Optionally, in any embodiment, the annular groove comprises a plurality of annular grooves arranged in concentric circles.
Optionally, in any embodiment, the concave bottom surface is at least partially provided with an elastic layer.
Preferably, in any embodiment, a floor pressure sensor is disposed on the concave floor. In this way, the pressure exerted on the concave bottom surface from the eyeball can be monitored, and the suction force at the outflow opening can be adjusted according to the requirement, so that the moderate suction force is maintained between the eyeball and the concave bottom surface, and the suction force is large enough to ensure that the concave bottom surface reliably sucks the eyeball to keep the relative position of the eyeball unchanged, and small enough to avoid the risk of injury caused by the eyeball directly contacting the concave bottom surface as much as possible.
For example, under normal conditions, the surface of the eyeball is substantially uniformly pressed toward the concave bottom surface by the suction force of the negative pressure, and the pressure applied to the concave bottom surface by the portions of the eyeball through the thin fluid layer is substantially uniform or substantially within the normal range, but once a portion of the eyeball is deformed abnormally by the suction force of the negative pressure and is attached to the concave bottom surface to form direct contact, the pressure applied to the portion of the concave bottom surface in direct contact will be different from the pressure applied to the portion of the concave bottom surface through the thin fluid layer in the normal condition before. Such pressure changes (or pressure anomalies) may be fed back to the controller under the monitoring of the bottom pressure sensor, whereby it is known that the suction applied at the outflow opening may be excessive, and the controller may adjust accordingly (e.g. reduce the suction) to avoid the risk of injury by direct contact of the eyeball with the concave bottom surface.
For example, it will be appreciated that during normal negative pressure aspiration operations, fluid is continually flowing from the inlet port and is aspirated from the outflow channel through the aspiration gap between the concave bottom surface and the eyeball, whereby a portion of the aspiration force is used to keep the fluid flowing, and thus the force of the eyeball on the concave bottom surface via the thin layer of fluid is relatively small; when the eyeball is attached to the concave bottom surface under the action of the negative pressure adsorption force to form direct contact, the force directly acting on the concave bottom surface is increased.
Optionally, in any embodiment, a plurality of floor pressure sensors are provided on the concave floor. This allows for a more comprehensive monitoring of the pressure exerted on the concave bottom surface from the eyeball.
Alternatively, in any embodiment, the concave bottom surface (or base curve) is spherically curved.
Alternatively, in any embodiment, the radius of curvature of the concave bottom surface (or base curve) may be 7.0-9.0mm, such as 7.8-8.4mm. It should be noted here that 7.8mm is the common radius of curvature of the cornea for the human eye, and 8.4mm is the common radius of curvature of the base curve for the OK mirror.
Preferably, in any embodiment, the annular lower edge has a radially inwardly tapered shape. When the annular lower edge is in contact with the eyeball, the shape of the eyeball contact portion can be consistent as much as possible, so that the suction gap between the eyeball suction device and the eyeball can be kept sealed as much as possible, and the negative pressure suction between the concave bottom surface and the eyeball is ensured during the fluid suction operation.
Optionally, in any embodiment, the annular lower rim has a radially inwardly tapering curvature. It will be appreciated that the outer contour of the annular lower rim may be curved instead of straight, so that when the annular lower rim is in contact with the eyeball, it is possible to conform as closely as possible to the contour of the eyeball contact portion, so that the suction gap between the eyeball suction means and the eyeball can be kept as sealed as possible, thereby ensuring that the fluid suction operation creates a negative pressure suction between the concave bottom surface and the eyeball.
Optionally, in any embodiment, the annular lower edge has a rounded edge. In this way, the shape of the eyeball can be better adapted, so that the suction gap between the eyeball adsorbing device and the eyeball can be kept sealed as much as possible, thereby ensuring that the fluid sucking operation forms negative pressure suction between the concave bottom surface and the eyeball, and further reducing the possible damage of contact force to the eyeball.
Optionally, in any embodiment, the annular lower rim has an elastic layer. In this way, on the one hand, the shape of the eyeball can be better adapted, so that the suction gap between the eyeball suction device and the eyeball can be kept as sealed as possible, thereby ensuring that the fluid suction operation forms negative pressure suction between the concave bottom surface and the eyeball, and on the other hand, the possible damage of contact force to the eyeball can be reduced.
Optionally, in any embodiment, a sealant layer is provided on the surface of the annular lower rim. In this way, the seal is assisted when the annular lower edge is in contact with the eyeball.
Optionally, in any embodiment, the sealant layer employs an ultrasonic couplant as the sealant.
Preferably, in any embodiment, the annular lower edge is lower than the lowermost end of the concave floor. In this case, on the one hand, when the annular lower edge is in contact with the eyeball, it is ensured that a sufficient gap is maintained between the eyeball and the concave bottom surface of the inner core body to protect the eyeball from accidental injury, and on the other hand, the concave bottom surface of the inner core body is protected from accidental damage. It should be noted that the difference in height between the annular lower edge and the lowermost end of the concave bottom surface is also not preferably excessive, and if the difference in height is excessive, it may cause an increase in the deformation distance of the center portion of the eyeball, and thus may require a greater force or a longer time to handle (e.g., cornea shaping).
Alternatively, in either embodiment, the annular lower edge may be 0-1mm lower than the lowermost end of the concave floor, for example 0.1-0.3mm lower.
Optionally, in any embodiment, the fluid input into the inflow cavity comprises a liquid, or a gas-liquid mixture.
Optionally, in any embodiment, the fluid input to the inflow cavity comprises oxygen. Thus, oxygen supplementation can be performed as needed.
Optionally, in any embodiment, the fluid input to the inflow chamber comprises a perfluorocarbon solution.
Optionally, in any embodiment, at least a portion of the outer housing is transparent. This allows a more intuitive monitoring of the level of fluid, in particular liquid, within the ocular adsorption device.
Optionally, in any embodiment, the eyeball adsorbing device is used for cornea crosslinking shaping.
Fig. 1 is a schematic structural view of an eyeball adsorbing device according to an embodiment of the present invention.
In the embodiment shown in fig. 1, an eyeball adsorbing device is visible, which comprises:
an outer cylinder 100 having a lower opening and including an annular lower rim 111 at a lower end for contact with an eyeball;
a core body 300 extending in an axial direction (shown as a vertical direction in the drawing) within the outer cylinder and including a concave bottom surface 333 for eyeball suction at a lower end;
a flow inlet 550 communicating with a flow inlet chamber 600 formed between an inner wall of the outer cylinder and an outer surface of the inner core;
an outflow port 770 communicating with the concave bottom surface via an outflow channel 330 in the core body;
wherein the fluid entering the inflow cavity 600 from the inflow opening 550 is pumped away from the outflow opening 770 via the outflow channel 330 (the lower end of which is on the concave bottom surface 333), so that the eyeball 900 is close to the concave bottom surface 333.
According to an embodiment of another aspect of the present invention, there is provided an eyeball adsorbing system including:
the eyeball adsorbing device as described in any of the previous embodiments;
a flow conveyor connected to the flow inlet;
an aspirator connected to the outflow port;
when the aspirator works, at least part of the fluid input into the inflow cavity from the inflow port by the fluid delivery device is pumped out from the outflow port through the outflow channel.
Therefore, when the eyeball adsorbing device is used, the lower opening of the outer cylinder body faces the upper surface of an eyeball to be adsorbed, the annular lower edge of the outer cylinder body is in contact with the eyeball, the concave bottom surface of the inner cylinder body is aligned with the eyeball but is not in contact with the eyeball, a certain gap (which can be called as an attraction gap) is formed between the eyeball adsorbing device and the eyeball, an inflow cavity formed between the inner wall of the outer cylinder body and the outer surface of the inner cylinder body is communicated with the gap, and an outflow channel starting from the concave bottom surface is also communicated with the gap, so that an internal communication cavity which is mutually communicated is formed between the eyeball adsorbing device and the eyeball.
The fluid input into the inflow cavity from the inflow port through the fluid delivery device can fill the whole internal circulation cavity (comprising the inflow cavity, the outflow channel and the suction gap between the eyeball adsorbing device and the eyeball). When fluid is sucked from the outflow port by the aspirator, the fluid in the inner circulation chamber is sucked from the concave bottom surface through the outflow channel, so that negative pressure is formed at the suction gap between the concave bottom surface and the eyeball to attract the eyeball towards the concave bottom surface, so that proper adsorption force is formed between the eyeball and the concave bottom surface, thereby ensuring that the relative position between the eyeball and the eyeball adsorption device is kept unchanged, and accordingly, the eyeball can be treated, for example, the cornea can be shaped (e.g. crosslinked) according to a preset shape defined by a die.
As can be seen from the above, the eyeball adsorbing device can generate an adsorbing force to ensure that the relative position between the eyeball and the eyeball adsorbing device remains unchanged, so as to avoid the influence of the change of the relative position caused by the rotation of the eyeball on the therapeutic effect. It should be emphasized that a thin fluid layer may be present between the concave bottom surface of the eyeball adsorbing means and the eyeball, on the one hand, the relative position between the eyeball and the concave bottom surface is kept stable by forming a negative pressure adsorbing force between the concave bottom surface and the eyeball by the sucking operation, and on the other hand, the eyeball is contacted with the thin fluid layer (without directly contacting the eyeball with the concave bottom surface) by the flexibility (elasticity), so that the risk of injury possibly caused by the direct contact of the eyeball with the concave bottom surface can be avoided or reduced.
Therefore, the eyeball adsorption system provided by the embodiment of the invention can reliably adsorb the eyeball so that the eyeball is kept relatively stable, and is beneficial to the treatment operation of the eyeball.
Preferably, in any embodiment, further comprising:
an eye support system, comprising: and the eyeball is supported towards the eyeball adsorption device, and the inflation height of the supporting airbag along the axial direction is dependent on the inflation degree in the supporting airbag.
In this way, suitable support for the eyeball may be provided as needed to assist in the suction of the eyeball by the eyeball suction device. In addition, the inflation height of the support airbag can be adjusted by changing the inflation degree of the support airbag, when the inflation degree is increased, the support airbag is inflated in the axial direction to provide a larger upward supporting force for the eyeball (or the eyeball can be moved toward the concave bottom surface (upward) of the eyeball suction device to be close to the concave bottom surface), whereas when the inflation degree is decreased, the support airbag is contracted in the axial direction to provide a smaller upward supporting force for the eyeball (or the eyeball can be moved away from the concave bottom surface (downward) of the eyeball suction device to be away from the concave bottom surface). Therefore, the eyeball adsorbing device can be effectively assisted to adsorb the eyeball at a proper position or height by the supporting air bag with proper inflation degree so as to be beneficial to eyeball treatment.
Preferably, in any embodiment, the eye support system comprises: and the air supply device is communicated with the supporting air bag. Thus, the air pressure in the supporting air bag can be adjusted by the air supply device to adjust the supporting of the supporting air bag to the eyeball.
Optionally, in any embodiment, the eye support system comprises: communicating to a barometer within the support cell. In this way, the air pressure in the support balloon can be monitored by the barometer and the support of the eyeball by the support balloon can be adjusted as needed.
Optionally, in any embodiment, the aspirator includes a suction pressure sensor.
Optionally, in any embodiment, the flow conveyor comprises a flow meter. In this way, a suitable input flow can be provided depending on the actual situation, for example on the suction force of the negative pressure at the suction gap, or on the suction situation of the aspirator.
Optionally, in any embodiment, the fluid transport comprises a check valve. In this way, reverse backflow of the fluid fed from the inlet port into the main body mechanism due to unbalance of the input and output of the negative pressure suction device or fluctuation of the suction operation or the like can be avoided.
Optionally, in any embodiment, the flow conveyor is provided with a filter structure at the outlet. In this way, the fluid can be filtered and purified by the filtering structure before being delivered to the eyeball adsorbing device, so that the risk of cornea damage caused by impurities in the fluid is reduced.
Optionally, in any embodiment, the eyeball adsorbing system includes: a control unit connected (e.g., wired or wireless) to the aforementioned bottom pressure sensor. In this way, the control unit can determine whether an operational adjustment, such as a reduction in suction force, is required based on the pressure detection result of the bottom surface pressure sensor. For example, when at least two of the plurality of floor pressure sensors detect the presence of a pressure abnormality (e.g., abnormal increase) in the concave floor, it may be determined that the attachment (direct contact) of the eyeball to the concave floor is serious, on the one hand, the risk of fluid blockage may be increased, and on the other hand, the risk of injury to the eyeball may be generated, in which case the operation may be adjusted, for example, by controlling the aspirator by the control unit to appropriately reduce the suction force.
Alternatively, in any of the embodiments, the control unit may also be connected (e.g. wired or wireless) to the aforementioned air supply means (for supplying air to the support airbag). In this way, the control unit can determine whether adjustment of the support airbag is required according to the pressure detection result of the bottom surface pressure sensor.
For example, when at least two of the plurality of bottom surface pressure sensors detect that there is a pressure abnormality (e.g., abnormal increase) in the concave bottom surface, it may be determined that the attachment (direct contact) of the eyeball to the concave bottom surface is serious, on the one hand, the risk of fluid blockage may be increased, and on the other hand, the risk of injury to the eyeball may be generated, in which case the operation may be adjusted, for example, by controlling the air supply device by the control unit to decrease the degree of inflation of the support airbag so as to decrease the support force of the support airbag to the eyeball.
Optionally, in either embodiment, the control unit may also be connected (e.g., wired or wireless) to the aforementioned barometer (for monitoring the air pressure within the support cell). Thus, after the air supply device supplies air to the supporting air bag, the control unit can judge whether the adsorption state of the concave bottom surface to the eyeball is normal or not according to the pressure detection result of the barometer, or can adjust the supporting air bag when needed.
For example, when the barometer detects the abnormal increase of the air pressure in the supporting air bag, the pressure of the eyeball on the supporting air bag is increased, and accordingly, the concave bottom of the eyeball adsorbing device has insufficient negative pressure adsorption force on the eyeball, so that the gravity of the eyeball is more pressed down on the supporting air bag. In this case, the operation may be adjusted accordingly, for example, by controlling the air supply device by the control unit to increase the degree of inflation of the support airbag to increase the support force of the support airbag to the eyeball to make up for the shortage of the negative pressure suction force of the concave bottom surface, and then by controlling the aspirator by the control unit to increase the suction force to increase the negative pressure suction force of the concave bottom surface.
Optionally, in any embodiment, the method may further include: and a storage device which is communicated with a space or cavity (such as the suction gap) enclosed between the concave bottom surface and the eyeball through a first valve and is communicated with the inside of the supporting air bag through a second valve, wherein the control unit is respectively connected (such as wired connection or wireless connection) with the first valve and the second valve so as to control the opening and closing of the first valve and the second valve, and meanwhile, the control unit is also connected with the bottom surface pressure sensor and the barometer.
For example, when at least two of the plurality of bottom surface pressure sensors detect the presence of a pressure abnormality (e.g., abnormal increase) in the concave bottom surface, it may be determined that the attachment (direct contact) of the eyeball to the concave bottom surface is serious. The control unit then opens the first valve and the pressure in the suction gap (with the presence of gas or liquid or a mixture of gas and liquid) is partly transferred to the reserve for backup, so that the pressure in the suction gap can be reduced to a reasonable range acceptable to the eye, at which point the control unit can close the first valve.
Optionally, in one embodiment, the first valve is a one-way valve. In this way, only excess pressure from within the suction gap is allowed to transfer into the reservoir, while reverse transfer is inhibited.
For another example, when the barometer detects that the air pressure in the supporting air bag is abnormally increased, the pressure of the eyeball on the supporting air bag is increased, and accordingly, the concave bottom of the eyeball adsorbing device has insufficient negative pressure adsorption force on the eyeball, so that the eyeball gravity is pressed down on the supporting air bag more. At this time, the control unit controls the second valve to be opened, the reserve pressure stored in the reserve device can be provided to the supporting air bag, the control unit can control the inflation degree of the supporting air bag, the supporting force of the supporting air bag to the eyeball is increased to make up for the defect of the negative pressure adsorption force of the concave bottom surface, and at this time, the control unit can close the second valve.
Optionally, in one embodiment, the second valve is a one-way valve. In this way, only the back-up pressure from the reserve is allowed to be supplied to the support balloon, while the reverse transfer is prohibited.
Optionally, in one embodiment, the reservoir is separated from the support balloon by an elastic sealing membrane. In this way, it is ensured that only the reserve pressure is provided to the support airbag when required, without the fluid in the reserve flowing into the support airbag.
Optionally, in one embodiment, the space within the reservoir comprises a fluid chamber and a gas chamber separated by an elastic separation membrane, the fluid chamber being in communication with the suction gap through the first valve, the gas chamber being in communication with the support balloon through the second valve.
Optionally, in one embodiment, further comprising: a pressure pump connected to the reservoir. In this way, a suitable pressure (which may include positive or negative pressure) is applied to the reservoir as needed by the pressure pump to ensure unidirectional transfer, transfer or application of pressure.
Optionally, in one embodiment, a floor flow meter is disposed on the concave floor. In this way, the fluid flow (flow velocity) in the cavity (such as the suction gap) between the eyeball and the concave bottom surface can be monitored, and the control unit in communication with the bottom surface flowmeter can adjust the suction force at the outflow port according to the requirement, so that the moderate suction force is maintained between the eyeball and the concave bottom surface, and the suction force is large enough to ensure that the concave bottom surface reliably adsorbs the eyeball to keep the relative position unchanged, and small enough to avoid the risk of injury caused by the eyeball directly contacting the concave bottom surface.
For example, under normal conditions, the surface of the eyeball is substantially uniformly pressed toward the concave bottom surface by the suction force of the negative pressure, and the eyeball is sucked to the concave bottom surface by the thin fluid layer. However, once a portion of the eyeball is deformed abnormally by the suction force of the negative pressure to be attached to the concave bottom surface to form direct contact, the flow of the fluid may be blocked or even blocked, and the flow rate (flow velocity) measured by the bottom surface flow meter will be different from the normal value in the case of the normal flow of the fluid. Under the monitoring of the bottom surface flowmeter, the change (or abnormality, such as abnormality or decrease) of the flow rate (or the flow rate) can be fed back to the controller, so that the controller can adjust (for example, reduce the suction force) according to the fact that the suction force applied to the outflow port may be excessive, so as to avoid the risk of injury caused by the eyeball directly contacting the concave bottom surface.
Optionally, in any embodiment, a plurality of floor flow meters are provided on the concave floor. This allows a more comprehensive monitoring of the flow rate (flow velocity) of the fluid in the cavity between the eyeball and the concave bottom surface, such as the suction gap.
Optionally, in any embodiment, the floor flowmeter is disposed on a surface of the slotless portion of the concave floor.
Optionally, in any embodiment, the floor flow meter is disposed within a radial slot of the concave floor. It will be appreciated herein that if fluid flow obstruction or blockage occurs in the ungrooved portion of the concave base of the eyeball, the fluid may also be maintained through the radial grooves to ensure suction negative pressure operation, however, if fluid flow obstruction or blockage also occurs in the radial grooves, this is indicated as more serious, and adjustments are urgently needed.
Optionally, in any embodiment, the floor flow meter is disposed within a radial slot of the concave floor and flush with an inner wall of the radial slot.
Alternatively, in either embodiment, the floor flow meter is disposed at the junction of the radial groove with the concave floor central bore (i.e., the start of the outflow channel, e.g., the central bore of the concave floor).
Optionally, in any embodiment, the floor flowmeter is disposed at a junction of the radial slot and the concave floor edge.
Optionally, in any embodiment, a plurality of floor flow meters are arranged along the radial slot.
It should be appreciated that suitable types of floor flow meters may be used as desired, such as orifice plate flow meters, electromagnetic flow meters, turbine flow meters, venturi flow meters, positive displacement flow meters, elliptical gear flow meters, rotameters, vortex shedding flow meters, roots flow meters, dual rotameters, target flow meters, ultrasonic flow meters, nozzle flow meters, coriolis mass flow meters, and the like, as known in the art.
Alternatively, in either embodiment, the functions of the floor flow meter and the floor pressure sensor may be mutually interchangeable or complementary (e.g., the control unit may simultaneously obtain monitored parameters from the floor pressure sensor and the floor flow meter for more comprehensive and accurate determination and take effective countermeasures). Accordingly, the control unit may determine whether the negative suction force in the cavity (e.g., the suction gap) between the eyeball and the concave bottom surface is excessively large (or excessively small) based on at least one of the flow rate (flow velocity) measurement value from the bottom surface flow meter and the pressure measurement value from the bottom surface pressure sensor, so as to take countermeasures in time, such as adjusting the magnitude of the suction force. It can be seen that the foregoing description of the pressure monitoring with respect to the bottom surface pressure sensor may be equally or similarly applied to the flow rate (flow velocity) monitoring with respect to the bottom surface flowmeter, both of which may be used to determine whether the negative pressure suction force in the cavity (e.g., the suction gap) between the eyeball and the concave bottom surface is abnormal, and thus will not be repeated herein.
Optionally, in any embodiment, the eyeball adsorbing system includes: a holding system for holding the outer housing in place.
Optionally, in any embodiment, the retention system comprises: a clip for holding the outer housing in place.
Optionally, in any embodiment, the retention system comprises: elastic buffer recovery structure. Therefore, when the eyeball accidentally moves, the elastic buffer recovery structure can be utilized to enable the eyeball adsorbing device to elastically move along with the movement of the eyeball, so that on one hand, the risk of injury to the eyeball caused by excessive force application for keeping the eyeball stable can be avoided, and on the other hand, the eyeball adsorbing device can recover to an initial reference position after the eyeball elastically moves along with the eyeball so as to be beneficial to treatment of the eyeball.
Fig. 2 is a schematic structural view of an eyeball adsorbing system according to an embodiment of the present invention.
In the embodiment shown in fig. 2, an eyeball adsorbing system is seen, which comprises:
an eyeball adsorbing device as described above;
a flow conveyor 500 connected to the inlet 550;
an aspirator 700 connected to the outflow 770;
wherein, when the aspirator is in operation, at least a portion of the fluid input into the inflow cavity from the inflow port by the fluid mover is aspirated from the outflow port via the outflow channel (as may be indicated by the upward arrow in fig. 2).
In the embodiment of fig. 2, the fluid mover 500 may be connected to the inlet 550 by a joint (e.g., a three-way joint); the aspirator 700 can be connected to the outflow 770 via a fitting (e.g., a three-way fitting).
Therefore, the eyeball adsorbing device and the eyeball adsorbing system provided by the embodiments of the invention can reliably adsorb the eyeball so that the eyeball is kept relatively stable.
It is noted that relational terms such as first and second, and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the statement "comprises one" does not exclude that an additional identical element is present in a process, method, article or apparatus that comprises the element.
In the description herein, it should be noted that "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless otherwise specifically indicated and defined; can be mechanical connection, electrical connection, magnetic connection, or communication connection; the two components can be directly connected or indirectly connected through an intermediate medium, or can be communicated inside the two components, or can be connected wirelessly or in a wired way. The specific meaning of the terms herein may be understood by those of ordinary skill in the art as the case may be.
In the description of elements herein, a plurality of juxtaposed features connected by "and/or" is meant to encompass one or more (or one or more) of these juxtaposed features. For example, the meaning of "a first element and/or a second element" is: one or more of the first element and the second element, i.e., only the first element, or only the second element, or both the first element and the second element (both present).
The various embodiments provided in this invention may be combined with each other as desired, e.g., features of any two, three or more embodiments may be combined with each other to form new embodiments of the invention, which are also within the scope of the invention unless stated otherwise or contradicted by skill.
The foregoing description of the exemplary embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any modifications, equivalents, and variations which fall within the spirit and scope of the invention are intended to be included in the scope of the invention.
Claims (10)
1. An eyeball adsorbing device, characterized by comprising:
an outer barrel having a lower opening and including an annular lower rim at a lower end for contact with an eyeball;
an inner core body extending axially within the outer cylinder body and including a concave bottom surface for eyeball suction at a lower end;
a flow inlet communicated with a flow inlet cavity formed between the inner wall of the outer cylinder and the outer surface of the inner core;
an outflow port communicated with the concave bottom surface via an outflow channel in the inner core body, wherein the outflow channel starts from the concave bottom surface;
the fluid entering the inflow cavity from the inflow opening is pumped out from the outflow opening through the outflow channel, so that eyeballs are close to the concave bottom surface.
2. The eyeball adsorbing device as set forth in claim 1, wherein,
the inflow port is arranged on the side wall of the outer cylinder body.
3. The eyeball adsorbing device as set forth in claim 1, wherein,
the outflow port is positioned at the upper end of the outer cylinder body.
4. The eyeball adsorbing device as set forth in claim 1, wherein,
the concave bottom surface is provided with a bottom surface pressure sensor.
5. The eyeball adsorbing device as set forth in claim 1, wherein,
the concave bottom surface is provided with a radial slot extending from the center to the edge of the concave bottom surface.
6. The eyeball adsorbing device as set forth in claim 1, wherein,
the annular lower edge has a radially inwardly tapered shape.
7. The eyeball adsorbing device as set forth in claim 1, wherein,
the annular lower edge is lower than the lowest end of the concave bottom surface.
8. An eyeball adsorption system, comprising:
the eyeball adsorbing device as set forth in any one of claims 1 to 7;
a flow conveyor connected to the flow inlet;
an aspirator connected to the outflow port;
when the aspirator works, at least part of the fluid input into the inflow cavity from the inflow port by the fluid delivery device is pumped out from the outflow port through the outflow channel.
9. An eye suction system as set forth in claim 8, further comprising:
an eye support system, comprising: and the eyeball is supported towards the eyeball adsorption device, and the inflation height of the supporting airbag along the axial direction is dependent on the inflation degree in the supporting airbag.
10. The eye-catching system as claimed in claim 9, wherein,
the eyeball support system includes: and the air supply device is communicated with the supporting air bag.
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| CN202311578041.4A CN117281684B (en) | 2023-11-24 | 2023-11-24 | Eyeball adsorption device and eyeball adsorption system |
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