CN114028072A - Cataract superfulsation device convenient to use - Google Patents
Cataract superfulsation device convenient to use Download PDFInfo
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- CN114028072A CN114028072A CN202111414581.XA CN202111414581A CN114028072A CN 114028072 A CN114028072 A CN 114028072A CN 202111414581 A CN202111414581 A CN 202111414581A CN 114028072 A CN114028072 A CN 114028072A
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- 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
- A61F9/007—Methods or devices for eye surgery
- A61F9/00736—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments
- A61F9/00745—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments using mechanical vibrations, e.g. ultrasonic
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Abstract
The present invention relates to the field of medical devices. Aims to provide a convenient cataract superfulsion device, which comprises an operator, a collector and a negative pressure aspirator; the suction interface of the operator is connected with one end of a pumping and exhausting pipeline, and the other end of the pumping and exhausting pipeline extends into the collector and extends to the lower part of the collector; the negative pressure aspirator is connected with one end of an air suction pipeline, and the other end of the air suction pipeline extends into the upper part of the collector; the collector is provided with an atmosphere introducing mechanism, the atmosphere introducing mechanism comprises a guide sleeve arranged at the top of the collector, and the lower end of the guide sleeve extends into the collector. The invention can avoid the problem that the adsorption pressure exceeds the safety threshold value caused by blockage, can effectively improve the phenomenon of sudden change of the adsorption pressure, and greatly improves the operation convenience and safety of the cataract ultrasonic emulsification.
Description
Technical Field
The invention relates to the field of medical equipment, in particular to a convenient cataract lactation device.
Background
The phacoemulsification is a widely used and accepted surgical method for treating cataract at present, a phacoemulsification needle is inserted into a small incision of a cornea or sclera of an eye to ultrasonically crush turbid crystalline lens nuclei and cortex, the crushed crystalline lens is sucked out by an aspiration and perfusion system, the anterior chamber is kept full, and then an artificial lens is implanted to ensure that a patient can see light. In this procedure, the hypercalactia of cataracts is essentially achieved by emulsifying the clouded lens and extracting it. In the operation process, the whole set of adopted equipment usually comprises an operator (namely an ultrasonic emulsification handle), wherein an ultrasonic emulsification needle head at the front end of the operator has the ultrasonic emulsification function and is also provided with a pumping and discharging channel and a perfusion channel, the pumping and discharging channel is sequentially communicated with a collector and a negative pressure aspirator through pipelines, and the perfusion is communicated with a perfusion liquid storage tank through a pipeline.
It is known that during the process of phacoemulsification, the phaco emulsion is sucked away through the manipulator and the tubing, but many times during the emulsification process, some incompletely emulsified substances such as lumps, fragments and the like will be blocked in the tubing and slowly advance when passing through the pumping tubing, which may cause the pumping tubing to be completely or partially blocked. With the continuous operation of the vacuum extractor and the blockage of the pumping line, the vacuum extractor creates an increasingly large negative pressure environment (i.e., pressure difference) in the collector, and if the blockage suddenly leaves the pumping line, the excessive adsorption force is generated due to the large pressure difference, which has a great influence on the safety of the operation.
In order to solve the above problems, some technical solutions for stabilizing the negative pressure environment in the collector by introducing the external atmosphere appear in the prior art, such as patent numbers: 201810578508.8, the general idea is to provide a sliding component, which can construct an air supply path for connecting the negative pressure suction device with the outside atmosphere; when the pumping and exhausting pipeline is blocked (namely, when the pressure in the collector is too low), the sliding part is driven by the external atmospheric pressure to communicate the air supplementing passage, and the air in the collector can be supplemented by the external atmosphere so as to keep the negative pressure not to exceed the safety threshold. When the pumping and discharging pipeline is unblocked, the pumping and discharging pipeline can reset under the pushing of the spring part so as to close the air replenishing channel. The scheme avoids the dangerous situation caused by the fact that the negative pressure exceeds the safety threshold to a certain extent. However, it also presents certain problems: because reset block adopts the spring, and the rebound speed of spring is too fast again, under the condition that the pump drainage pipeline switches on suddenly, the spring can promote sliding part fast action to transfer suction to manipulator department from the suction to external atmosphere suddenly, this just makes the syringe needle suction end pressure sudden change of manipulator, and the sudden increase of this kind of pressure, though the size does not exceed safe threshold value, but the actual meeting that nevertheless causes interference and influence to the operation, especially under the unpredictable condition of pressure sudden change node after blockking up, even probably induce the doctor to produce the maloperation, cause medical accident.
Disclosure of Invention
The invention aims to provide a convenient cataract superfluing device which can avoid the sudden change of adsorption pressure.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows: a cataract superfulsion device convenient to use comprises an operator, a collector and a negative pressure aspirator; the suction interface of the operator is connected with one end of a pumping and exhausting pipeline, and the other end of the pumping and exhausting pipeline extends into the collector and extends to the lower part of the collector; the negative pressure aspirator is connected with one end of an air suction pipeline, and the other end of the air suction pipeline extends into the upper part of the collector;
the collector is provided with an atmosphere introducing mechanism, the atmosphere introducing mechanism comprises a guide sleeve arranged at the top of the collector, and the lower end of the guide sleeve extends into the collector; an air inlet blind pipe which is matched with the guide sleeve is arranged in the guide sleeve in a penetrating way, the upper end of the air inlet blind pipe is provided with an opening, the lower end of the air inlet blind pipe is closed, the side wall of the lower part of the air inlet blind pipe is provided with an air passing hole, and the peripheral surface of the upper end of the air inlet blind pipe is provided with a connecting disc; the atmosphere introducing mechanism further comprises a position control assembly for controlling the position of the air inlet blind pipe;
the position control assembly is arranged between the connecting disc and the top surface of the collector and comprises a hollow driving box, damping liquid is filled in the driving box, and a buoyancy reset piston is further arranged in the driving box; the buoyancy reset piston and the driving box form vertical sliding fit, the upper surface of the buoyancy reset piston is fixedly connected with the lower end of the connecting rod, and the upper end of the connecting rod penetrates through a guide pipe arranged at the top of the driving box and is fixedly connected with the connecting disc; the buoyancy reset piston is provided with a first through hole with a large size and a second through hole with a small size, and a one-way valve which is communicated in a one-way mode from bottom to top is arranged in the first through hole;
when the pressure difference between the interior of the collector and the outside atmosphere is lower than a safety threshold value, the collector is driven by the buoyancy of the damping liquid, and the buoyancy reset piston can move to the top of the driving box, so that the air passing hole of the air inlet blind pipe is positioned in the guide sleeve; when the pressure difference between the interior of the collector and the outside atmosphere is higher than a safety threshold value, the atmospheric pressure can overcome the buoyancy of the damping liquid to drive the air inlet blind pipe to move downwards, so that the air passing hole of the air inlet blind pipe is exposed from the lower end of the guide sleeve.
Preferably, the inner surface of the top of the collector is further provided with an air path guide cylinder, the air path guide cylinder is wrapped outside the guide sleeve and the air inlet blind pipe, the lower end of the air path guide cylinder is provided with a vertical extension pipe, the upper end of the extension pipe is communicated with the inside of the air path guide cylinder, and the lower end of the extension pipe extends to a position flush with the pumping and discharging pipeline.
Preferably, the upper end of the guide sleeve extends out of the collector, and a section beyond the collector forms a guide extension.
Preferably, sealing rubber rings are arranged between the guide sleeve and the air inlet blind pipe and between the connecting rod and the guide pipe.
Preferably, the position control assemblies comprise a plurality of groups, and the position control assemblies are uniformly distributed around the air inlet blind pipe in an annular shape; the drive box is in a hollow cylindrical shape, and the buoyancy reset piston is in a disc shape.
Preferably, the position control assemblies are arranged in one group, the driving boxes are in a hollow circular ring shape, and the driving boxes are coaxially arranged outside the air inlet blind pipe; the buoyancy reset piston is in a ring shape.
Preferably, the drive box is provided with a liquid exchange port and an emptying port, and the liquid exchange port and the emptying port are both provided with valves.
Preferably, the air inlet blind pipe, the connecting disc and the connecting rod are all made of low-density plastics.
Preferably, the buoyancy reset piston comprises a piston body made of low-density foam and a rubber sealing membrane arranged on the side edge of the piston body and used for contacting with the inner wall of the driving box; the first through hole and the second through hole are arranged on the piston body.
The beneficial effects of the invention are concentrated and expressed as follows: can avoid because the problem that the adsorption pressure that blocks up and cause surpasss the safe threshold value, can effectually improve the phenomenon of adsorption pressure sudden change simultaneously, have very big promotion cataract ultrasonic emulsification's executing art convenience and security.
Specifically, in the use process of the invention, under the normal use condition (namely under the condition that the pumping and discharging pipeline is unblocked), the negative pressure suction path comprises an operator, the pumping and discharging pipeline, a collector, an air suction pipeline and a negative pressure suction device; when certain blockage occurs to the pumping and discharging pipeline, the negative pressure suction device continuously works, along with the reduction of the pressure in the collector, the pressure difference between the negative pressure suction device and the outside atmosphere is increased, the outside atmosphere overcomes the buoyancy of damping liquid to push the air inlet blind pipe, the connecting disc, the connecting rod and the buoyancy reset piston to integrally move downwards, in the moving-downwards process, the air passing hole in the air inlet blind pipe is exposed out of the guide sleeve, the outside atmosphere can enter the collector through the air passing hole, the introduction to the outside atmosphere is realized, namely, part of the path of negative pressure suction is adjusted into the air inlet blind pipe, the air passing hole, the collector, the air suction pipeline and the negative pressure suction device, so that the situation that the negative pressure environment constructed in the collector exceeds a safety threshold value under the situation that certain blockage occurs to the pumping and discharging pipeline is prevented. Meanwhile, due to the existence of the large-size first through hole and the arrangement of the one-way valve inside the first through hole, the damping liquid can flow through the buoyancy reset piston quickly in the downward movement process, the interference on the movement of the buoyancy reset piston is avoided, and the pressure limiting reaction speed is high.
When the blocking materials in the pumping and discharging pipeline flow through the pumping and discharging pipeline, after the pumping and discharging pipeline is completely communicated, the negative pressure suction path corresponding to the pumping and discharging pipeline is completely recovered, the air inlet blind pipe, the connecting disc, the connecting rod and the buoyancy reset piston integrally move upwards under the driving of the buoyancy of the damping liquid, and in the process of moving upwards, the air passing hole in the air inlet blind pipe enters the inside of the guide sleeve again to realize sealing, so that the path introduced by the external atmosphere is cut off, and the normal work of the equipment is kept. Meanwhile, due to the existence of the small-sized second through hole and the limitation of the one-way valve arranged in the first through hole, the damping liquid can only slowly flow through the second through hole in the upward moving process of the buoyancy reset piston, so that the air inlet blind pipe can reset, the air inlet blind pipe cannot reset too fast, but reset relatively slowly and stably, the problem of sudden change of pressure of the adsorption end of the manipulator caused by too fast resetting is solved, and the operation stability of a doctor is improved.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is an enlarged view of section A of FIG. 1 under one embodiment;
FIG. 3 is a schematic diagram of the construction of the buoyancy return piston of the embodiment shown in FIG. 2;
FIG. 4 is an enlarged view of portion A of FIG. 1 in another embodiment;
FIG. 5 is a schematic diagram of the construction of the buoyancy return piston of the embodiment shown in FIG. 4.
Detailed Description
As shown in figures 1-5, a convenient cataract superfatting device comprises an operator 1, a collector 2 and a negative pressure aspirator 3. The manipulator 1 is the same as the traditional manipulator and comprises an ultrasonic emulsification needle head which can be used for injecting cleaning liquid into eyes and pumping and discharging emulsified liquid, a suction interface of the manipulator 1 is connected with one end of a pumping and discharging pipeline 4, and the other end of the pumping and discharging pipeline 4 extends into the collector 2 and extends to the lower part of the collector 2. The negative pressure aspirator 3 can be selected as a negative pressure pump, the suction end of the negative pressure aspirator 3 is connected with one end of an air suction pipeline 5, and the other end of the air suction pipeline 5 extends into the upper part of the collector 2. The general working principle is the same as that of the existing device, the manipulator 1 is used for carrying out ultrasonic emulsification on the crystalline lens, and the cleaning liquid is poured and cleaned while the cleaning liquid and the emulsified liquid are pumped and discharged so as to keep the pressure balance of the anterior chamber and the posterior chamber.
The biggest difference between the present invention and the conventional cutting device is that the collector 2 is provided with an atmosphere introducing mechanism 6, and as shown in fig. 2, the atmosphere introducing mechanism 6 includes a guide sleeve 7 disposed at the top of the collector 2, and the lower end of the guide sleeve 7 extends into the collector 2. The air inlet blind pipe 8 is arranged in the guide sleeve 7 in a penetrating mode in a matched mode, the upper end of the air inlet blind pipe 8 is provided with an opening, the lower end of the air inlet blind pipe 8 is sealed, the side wall of the lower portion of the air inlet blind pipe 8 is provided with an air passing hole 9, the air passing hole 9 can be selected from a vertically extending strip-shaped through hole, or the air passing hole 9 is formed by a plurality of densely distributed hole groups. The air passing hole 9 is communicated or closed by controlling the position of the air passing hole 9 relative to the guide sleeve 7, and the air passing hole 9 is communicated when extending out of the guide sleeve 7; the air inlet blind pipe is closed when the guide sleeve 7 retracts, and a sealing rubber ring is arranged between the guide sleeve 7 and the air inlet blind pipe 8 in order to ensure the air tightness when the air inlet blind pipe 8 retracts. The structure of the sealing ring is simple, and is not indicated by reference numerals in the figures, and a person skilled in the art can adapt the sealing ring by combining the existing sealing ring.
In order to increase the stability of the movement of the intake blind 8 in the guide sleeve 7, the upper end of the guide sleeve 7 extends outside the collector 2 and beyond a section of the collector 2, as shown in fig. 2, forms a guide extension 20. The circumferential surface of the upper end of the air inlet blind pipe 8 is provided with a connecting disc 10, and the atmosphere introducing mechanism 6 further comprises a position control assembly for controlling the position of the air inlet blind pipe 8.
The invention abandons the traditional mode of position control through elastic components such as springs, rubber bands, elastic sheets and the like, and adopts a buoyancy reset mode to control the position. The dynamics of this kind of mode restoring force is more stable (equals the buoyancy that receives all the time), and buoyancy under the displacement circumstances that establishes, remains unchanged all the time, very is convenient for carry out progress control. As shown in fig. 2, the position control assembly is disposed between the connecting disc 10 and the top surface of the collector 2, and includes a hollow driving box 11, the driving box 11 is filled with damping fluid 12, and a buoyancy restoring piston 13 is further disposed in the driving box 11.
The driving boxes 11 of the present invention have a plurality of specific shapes, and the number of the driving boxes can be flexibly set, for example, as shown in fig. 2 and 3, the position control assemblies include a plurality of groups, and the plurality of groups of position control assemblies are uniformly distributed around the air inlet blind pipe 8 in a ring shape. The drive pod 11 is hollow cylindrical and the buoyant return piston 13 is disc shaped as shown in figure 3. As shown in fig. 4 and 5, the position control assemblies may be arranged in one group, the driving box 11 is in a hollow circular ring shape, the driving box 11 is coaxially arranged outside the air inlet blind pipe 8, and the buoyancy restoring piston 13 is in a circular ring shape. Of course, other shapes than those described above are possible to achieve the same effect.
The buoyancy reset piston 13 and the driving box 11 form a sliding fit along the vertical direction, the upper surface of the buoyancy reset piston 13 is fixedly connected with the lower end of the connecting rod 14, and the upper end of the connecting rod 14 penetrates through a guide pipe 15 arranged at the top of the driving box 11 and is fixedly connected with the connecting disc 10. In order to ensure the sealing performance to the interior of the driving box 11, a sealing rubber ring is arranged between the connecting rod 14 and the guide tube 15.
Because the lifting speed of the buoyancy reset piston 13 is directly related to the change trend of the adsorption force, in order to control the speed of the buoyancy reset piston 13 in the lifting motion process, a large-size first through hole 16 and a small-size second through hole 17 are arranged on the buoyancy reset piston 13, and a one-way valve which is communicated in a one-way mode from bottom to top is arranged in the first through hole 16. As shown in fig. 3 and 5, the buoyancy restoring piston 13 according to the present invention generally includes a piston body 21 made of low-density foam and a rubber packing film 22 provided at the side of the piston body 21 for contacting the inner wall of the driving case 11. The first through hole 16 and the second through hole 17 are provided on the piston body 21. Considering the mobility of the buoyancy restoring piston 13, which is the other components such as the inlet manifold 8 driven by buoyancy, these moving components are also preferably made of lightweight materials, i.e. the inlet manifold 8, the connecting plate 10 and the connecting rod 14 are all made of low-density plastics.
When the pressure difference between the interior of the collector 2 and the outside atmosphere is lower than the safety threshold, the structure is as shown in fig. 2, the buoyancy reset piston 13 can move to the top of the driving box 11 under the buoyancy driving of the damping fluid 12, so that the air passing hole 9 of the air inlet blind pipe 8 is positioned in the guide sleeve 7. When the pressure difference between the interior of the collector 2 and the outside atmosphere is higher than a safety threshold, the atmospheric pressure can overcome the buoyancy of the damping liquid 12 to drive the air inlet blind pipe 8 to move downwards, so that the air passing hole 9 of the air inlet blind pipe 8 is exposed from the lower end of the guide sleeve 7.
In the use process of the invention, under the normal use condition (namely the condition that the pumping and discharging pipeline 4 is unblocked), the negative pressure suction path comprises an operator 1, the pumping and discharging pipeline 4, a collector 2, an air suction pipeline 5 and a negative pressure suction device 3; when the pumping and discharging pipeline 4 is blocked to a certain extent, the negative pressure suction device 3 works continuously, the pressure difference between the negative pressure suction device and the outside atmosphere is increased along with the pressure reduction in the collector 2, the outside atmosphere overcomes the buoyancy of the damping liquid 12 to push the air inlet blind pipe 8, the connecting disc 10, the connecting rod 14 and the buoyancy reset piston 13 to move downwards integrally, in the process of moving downwards, the air passing hole 9 in the air inlet blind pipe 8 exposes the guide sleeve 7, the outside atmosphere can enter the collector 2 through the air passing hole 9, and the introduction to the outside atmosphere is realized, namely, part of the path of negative pressure suction is adjusted to the air inlet blind pipe 8, the air passing hole 9, the collector 2, the air suction pipeline 5 and the negative pressure suction device 3, so that the situation that the negative pressure environment constructed in the collector 2 exceeds the safety threshold value under the condition that the pumping and discharging pipeline 4 is blocked to a certain extent is prevented. Meanwhile, due to the existence of the large-size first through hole 16 and the arrangement of the one-way valve inside, the damping liquid 12 can flow through quickly in the downward movement process of the buoyancy reset piston 13, so that the interference on the movement of the buoyancy reset piston 13 is avoided, and the pressure limiting reaction speed is high.
When the blocking object in the pumping pipeline 4 flows through the pumping pipeline 4, and the pumping pipeline 4 is completely conducted, the negative pressure suction path corresponding to the pumping pipeline 4 is completely recovered, the air inlet blind pipe 8, the connecting disc 10, the connecting rod 14 and the buoyancy reset piston 13 integrally move upwards under the driving of the buoyancy of the damping liquid 12, and in the process of moving upwards, the air passing hole 9 in the air inlet blind pipe 8 enters the guide sleeve 7 again to realize sealing, so that the path introduced by the external atmosphere is cut off, and the normal work of the equipment is kept. Meanwhile, due to the existence of the small-sized second through hole 17 and the limitation of the one-way valve arranged in the first through hole 16, in the process that the buoyancy reset piston 13 moves upwards, the damping liquid 12 only can slowly flow through the second through hole 17, so that the air inlet blind pipe 8 can reset, and can not reset too fast, but can reset slowly and stably, the problem of sudden change of pressure at the adsorption end of the manipulator 1 caused by too fast resetting is solved, and the stability of operation of a doctor is improved.
On the basis, in order to further improve the stability of the invention, a communication node of an atmosphere introducing mechanism for introducing outside atmosphere and a negative pressure area inside the collector 2 can be arranged at a position close to the pumping and discharging pipeline 5, as shown in fig. 1, an air path guide cylinder 18 is further arranged on the inner surface of the top of the collector 2, the air path guide cylinder 18 is covered outside the guide sleeve 7 and the air inlet blind pipe 8, a vertical extension pipe 19 is arranged at the lower end of the air path guide cylinder 18, the upper end of the extension pipe 19 is communicated with the inside of the air path guide cylinder 18, and the lower end of the extension pipe extends to a position flush with the pumping and discharging pipeline 4.
In addition, as the buoyancy of the buoyancy reset piston 13 is completely influenced by the liquid discharge amount of the buoyancy reset piston to the damping liquid 12 in the driving box 11, in order to further improve the adaptability of the invention and adapt to different negative pressure threshold ranges, the driving box 11 is provided with a liquid exchange port and an exhaust port, and the liquid exchange port and the exhaust port are both provided with valves. The damping liquid 12 with different densities can be replaced through the liquid changing port to construct different buoyancy for the buoyancy reset piston 13, air entering in the liquid changing process can be discharged through the emptying port, and the damping liquid 12 can be conveniently injected.
Claims (9)
1. A cataract superfulsion device convenient to use comprises an operator (1), a collector (2) and a negative pressure aspirator (3); the suction interface of the operator (1) is connected with one end of a pumping and discharging pipeline (4), and the other end of the pumping and discharging pipeline (4) extends into the collector (2) and extends to the lower part of the collector (2); the negative pressure aspirator (3) is connected with one end of an air suction pipeline (5), and the other end of the air suction pipeline (5) extends into the upper part of the collector (2);
the method is characterized in that: an atmosphere introducing mechanism (6) is arranged on the collector (2), the atmosphere introducing mechanism (6) comprises a guide sleeve (7) arranged at the top of the collector (2), and the lower end of the guide sleeve (7) extends into the collector (2); an air inlet blind pipe (8) matched with the guide sleeve (7) penetrates through the guide sleeve, the upper end of the air inlet blind pipe (8) is provided with an opening, the lower end of the air inlet blind pipe is closed, the side wall of the lower part of the air inlet blind pipe (8) is provided with an air passing hole (9), and the peripheral surface of the upper end of the air inlet blind pipe (8) is provided with a connecting disc (10); the atmosphere introducing mechanism (6) further comprises a position control assembly for controlling the position of the air inlet blind pipe (8);
the position control assembly is arranged between the connecting disc (10) and the top surface of the collector (2), the position control assembly comprises a hollow driving box (11), the driving box (11) is filled with damping liquid (12), and a buoyancy reset piston (13) is further arranged in the driving box (11); the buoyancy reset piston (13) and the driving box (11) form vertical sliding fit, the upper surface of the buoyancy reset piston (13) is fixedly connected with the lower end of a connecting rod (14), and the upper end of the connecting rod (14) penetrates through a guide pipe (15) arranged at the top of the driving box (11) and is fixedly connected with the connecting disc (10); the buoyancy reset piston (13) is provided with a first through hole (16) with a large size and a second through hole (17) with a small size, and the first through hole (16) is internally provided with a one-way valve which is communicated in a one-way from bottom to top;
when the pressure difference between the interior of the collector (2) and the outside atmosphere is lower than a safety threshold value, the collector is driven by the buoyancy of the damping liquid (12), and the buoyancy reset piston (13) can move to the top of the driving box (11) so that the air passing hole (9) of the air inlet blind pipe (8) is positioned in the guide sleeve (7); when the pressure difference between the interior of the collector (2) and the outside atmosphere is higher than a safety threshold value, the atmospheric pressure can overcome the buoyancy of the damping liquid (12) to drive the air inlet blind pipe (8) to move downwards, so that the air passing hole (9) of the air inlet blind pipe (8) is exposed from the lower end of the guide sleeve (7).
2. The convenient-to-use cataract lactogenesis device according to claim 1, wherein: the internal surface at collector (2) top still is provided with gas circuit guide tube (18), gas circuit guide tube (18) cladding is outside uide bushing (7) and air inlet blind pipe (8), and the lower extreme of gas circuit guide tube (18) is provided with vertical extension pipe (19), the upper end and the inside intercommunication of gas circuit guide tube (18) of extension pipe (19), the lower extreme extends to the position that is high with pump drainage pipeline (4).
3. The convenient-to-use cataract lactogenesis device according to claim 1, wherein: the upper end of the guide sleeve (7) extends out of the collector (2), and a section of the guide sleeve exceeding the collector (2) forms a guide extension part (20).
4. The convenient-to-use cataract lactogenesis device according to claim 3, wherein: and sealing rubber rings are arranged between the guide sleeve (7) and the air inlet blind pipe (8) and between the connecting rod (14) and the guide pipe (15).
5. The convenient-to-use cataract lactogenesis device according to claim 4, wherein: the position control assemblies comprise a plurality of groups, and the position control assemblies are uniformly distributed around the air inlet blind pipe (8) in an annular shape; the drive box (11) is in a hollow cylindrical shape, and the buoyancy reset piston (13) is in a disc shape.
6. The convenient-to-use cataract lactogenesis device according to claim 4, wherein: the position control assemblies are arranged in a group, the driving box (11) is in a hollow circular ring shape, and the driving box (11) is coaxially arranged outside the air inlet blind pipe (8); the buoyancy reset piston (13) is in a ring shape.
7. The easy-to-use cataract lactogenesis device according to claim 5 or 6, wherein: the drive box (11) is provided with a liquid exchange port and an emptying port, and valves are arranged at the liquid exchange port and the emptying port.
8. The convenient-to-use cataract lactogenesis device according to claim 7, wherein: the air inlet blind pipe (8), the connecting disc (10) and the connecting rod (14) are all made of low-density plastics.
9. The convenient-to-use cataract lactogenesis device according to claim 8, wherein: the buoyancy reset piston (13) comprises a piston body (21) made of low-density foam and a rubber sealing membrane (22) which is arranged on the side edge of the piston body (21) and is used for being in contact with the inner wall of the driving box (11); the first through hole (16) and the second through hole (17) are provided on the piston body (21).
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| CN202111414581.XA CN114028072B (en) | 2021-11-25 | 2021-11-25 | Cataract superemulsion device convenient to use |
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