SU1660696A1 - Device for aspirating the intraocular contents - Google Patents

Abstract

This invention relates to a medical ophthalmic technique. The purpose of the invention is to increase the safety of aspiration and increase speed. The device contains a working tip 1 connected to a drainage tube 2, a collector 3, a control tank 4 connected by an elastic tube 5 to the atmosphere, a suction line 6 and a discharge line 7, a pneumatic booster 8 with a slide valve 9, conjugated with a block contact 10, vacuum pump 11, pneumatically connected by suction and discharge lines 6 and 7 with pneumatic booster 8 and collector 3, flow interrupter 12 connected between drain tube 2 and collector 3. The device uses a spool system to provide safe and inertial control aspiration. 1 il.

Description

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The invention relates to medical technology can be used in the field of ophthalmology.

The purpose of the invention is to increase the safety of aspiration and increase speed.

The drawing shows a block diagram of the device.

The device contains a working tip 1 connected to a drainage tube 2, a collector 3, a control tank 4 connected by an elastic tube 5 to the atmosphere, a suction line b and a discharge line 7, a pneumatic booster 8 with a slide valve 9, conjugated with a block contact 10 and connected suction and discharge lines 6 and 7 with a vacuum pump 11, a flow interrupter 12 connected between a drainage pipe 2 and a collector 3, a pneumatically connected outlet through a pneumatic amplifier 8 with a vacuum pump 11.

The device works as follows.

When the spool 9 is in the middle position, the air from the atmosphere through the suction line 6 through the pneumatic booster 8 forcing through the suction line 7 to the atmosphere. At the same time, the collector 3 is connected to the atmosphere through the connecting tubes and the pneumatic booster 8. The flow interrupter 12 is disconnected by the auxiliary contact 10 and the working tip 1 is disconnected from the other blocks.

The working tip 1 is inserted inside the eye. The surgeon, holding the end of the elastic tube 5 in his mouth, creates a negative pressure through his lungs, which spreads 0 control capacitance

4. By the action of the differential pressure, the spool 9 is moved to the right. When this is turned on, the flow interrupter 12 connects the working tip 1 to the collector 3. As the spool 9 overlaps the connection with the atmosphere, the intraocular medium is sucked in by the working tip 1 and through the flow interrupter 12 through the communication line enters the collector 3. Air from the collector 3 pumped through the communication line through the pneumatic booster 8 through the suction line 6 to the pump 11 and injected through the injection line 7 through the pneumatic booster 8 to the atmosphere, thereby creating a negative pressure in the working tip 1 ratsi intraocular contents in the book 3.

To maintain the required negative pressure at tip 1, the surgeon must press the tube with his teeth

5, In this case, the spool 9 is held in a certain position.

If necessary, the surgeon can release the negative pressure in the working tip 1 to atmospheric. For this, the surgeon informs the tube 5 with the atmosphere, after which the spring-loaded spool 9 moves to the middle position, at which the working tip 1 goes from the collector 3.

If the surgeon considers it necessary to create a reverse current of the aspirated intraocular environment, he creates an increased pressure in the oral cavity, which is transmitted through the elastic tube 5 to the control tank 4. Under the pressure of a positive

the pressure in the control tank 4, the spool 9 is moved to the left. Since the valve 9 at the same time blocked the connection of the injection line 7 with the atmosphere, the air is sucked by the pump 11 from the line 6 through the pneumatic amplifier 8 and is injected into the collector 3, and then through the flow interrupter 12, through the drainage tube 2 into the working tip 1, There is excessive pressure and, therefore, carried out a reverse current of the intraocular medium into the working tip 1.

The stroke of the spool 9 is proportional to the volume of air pumped or sucked by the surgeon into the control tank 4. As the spool 9 starts to close or open the communication lines during movement, the forced or sucked air passing through the vacuum pump 11 having a wider The range of parameters (positive or negative pressure, air flow) compared with the capabilities of a person, is throttled through the spool 9 of the pneumatic booster 8 in proportion to the stroke of the spool 9.

Thus, the pressure created

in the controlled container 4 without significant stress on the physical forces of the surgeon, the pneumatic amplifier 8 causes a proportional change in pressure created by the vacuum pump 11. A positive or negative pressure of the required size is provided with a considerable speed, which allows for more aspiration aspiration.

Claims (1)

Invention Formula A device for aspiration of intraocular contents, including a working tip with a drainage tube, a collector, a control tank, an elastic tube connected to the atmosphere, suction and discharge lines, characterized in that, in order to improve the safety of aspiration and speed, it is complementary A pneumatic amplifier with a gold current, connected between the drainage pipe by a nickname, coupled with the control capacitor and collector, the output of a pneumatic connection and a block contact, and a vacuum pump were introduced. connected through a pneumatic amplifier with a vacuum on the connected suction lines and a suction pump, the block contact is sequentially connected airgun tani. 5-interrupter with control input of flow interrupter.