JP2608424B2 - Surgical device with reflux function - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surgical apparatus with a reflux function which is optimal for use in ophthalmic surgery requiring removal of dirty vitreous bodies.

BACKGROUND OF THE INVENTION An ophthalmic surgical device is disclosed in U.S. Pat. No. 4,395,258.

This device is configured by inserting a vitreous body, which is an object to be aspirated, from a suction port at the tip of a cutter that is inserted into an eyeball to cut off the vitreous body, into a housing that is depressurized by a vacuum pump unit, and a pipe. It sucks through a passage.

[Problems to be Solved by the Invention] In ophthalmic surgery using this device, the vitreous body to be resected is carefully removed, but sometimes the detached retina is aspirated or resected at once. In some cases, fibers that cannot be absorbed may be sucked.

In this case, it is necessary to reverse the object to be sucked in order to return the retina or the like which has been about to be sucked.

However, this type of conventional apparatus does not have a function of backflowing the suctioned object, and in this case, immediately stops suction and ladders a part of the pipe from the cutter to the storage section with a finger. The object to be sucked was backflowed. Therefore, the operation cannot be performed as efficiently as desired.

[Object of the Invention] The present invention has been made to solve the above problems, and has as its object to provide a surgical operation device with a backflow function capable of backflow of an object to be suctioned.

[Summary of the Invention] The gist of the present invention is as set forth in Claim 1.

[Means for Solving the Problems] The present invention relates to a surgical operation with a backflow function having a function of backflowing an aspirated object in order to discharge the aspirated object when the aspirated object not to be aspirated is sucked. Device.

 Please refer to FIG.

The suction port 30 is for sucking the suction object 34.
The storage section 40 stores the sucked object 34. The vacuum pump unit 42 reduces the pressure inside the storage unit 40. The second passage 50 branches off from the first passage 8, and the pressurizing section 43 is connected to the second passage 50.

Then, at the time of suction, the housing portion 40 is depressurized by the vacuum pump section 42, the suction object 34 is suctioned from the suction port 30, and at the time of backflow, the suction target suctioned by the pressurizing section 43 into the first passage 8 or the second passage 50. The object 34 is configured to flow backward to the eyeball 13 side.

[Operation] During the operation, the object to be aspirated 34 can be appropriately returned to the eyeball 13 side without squeezing by hand as needed.

Embodiment 1 FIG. 1 shows a preferred embodiment of a surgical apparatus with a reflux function according to the present invention. The surgical apparatus 1 with a reflux function of the present invention is provided in a vitreous surgery apparatus as an example.

In vitreous surgery, for example, a turbid portion of the gel-like vitreous body 14 between the lens a and the retina b (hereinafter referred to as an aspirated object 34) is removed by suction and replaced with a transparent liquid. This allows light to pass through the crystalline lens a and reach the retina b, thereby achieving visual acuity recovery.

The vitreous surgery device includes a surgical device 1 with a reflux function, a cutter drive unit 2, a light source unit 3 and a perfusion bolt 4, a cutter 5 with a suction function, a light guide 6, and a perfusion flag 7.

The cutter 5 has an insertion portion 5a. The insertion portion 5a is inserted into the eyeball 13 through the sclera 15 of the eyeball 13. A suction port 30 is provided at the tip of the insertion section 5a. The cutter 5 can cut off the suction object 34 entering the suction port 30. The cut object to be suctioned 34 can be sucked into the surgical device 1 with the backflow function through the insertion portion 5a and the first passage 8.

The compressed air tube 9 is connected to the cutter drive unit 2. The compressed air is sent to the cutter 5 via the tube 9, and the cutter 5 is operated by the compressed air to cut off the suctioned object 34. The light source unit 3 can send light to the light guide 6 via the optical fiber 11. The tip of the light guide 6 is the eyeball 13
Is inserted inside. And the light guide 6 is the suction port
It can shine light around 30.

The perfusion bolt 4 contains a perfusion liquid. The perfusate is supplied to the eyeball 13 via the perfusion tube 12 and the perfusion flag 7.
Can be sent inside. This perfusate is intended to replenish the inside of the eyeball 13 and recover intraocular pressure after excision and aspiration of the object 34 to be aspirated.

Next, the surgical apparatus 1 with a reflux function will be described in detail with reference to FIG.

The surgical apparatus 1 with a reflux function includes a suction port 30 and an object to be suctioned 34.
, A first passage 8, a vacuum pump unit 42, a pressurizing unit 43, and a second passage 50.

The storage section 40 is a bolt-shaped container that can be opened and closed.
The first passage 8 has a pipe shape and connects the accommodating portion 40 and the cutter 5. A valve 41 is provided on the way. The vacuum pump section 42 is connected to the accommodation section 4 via a vacuum line 42a.
Connected to 0.

The pressurizing section 43 is constituted by a compression pump 44. The second passage 50 has a valve 45, a regulator 46, and a valve 47. The valve 41 and the valves 45 and 47 are electrically connected to a control unit 48. The control unit 48 can control the valve 41 and the valves 45 and 47 by operating the foot switch 49. Valves 45, 47, regulator 46 and compression pump 4
4 are arranged in series along the second passage 50. The regulator 46 can adjust the amount of compressed air supplied from the compression pump 44.

The second passage 50 branches off from the first passage 8. The valve 41 is, for example, an electromagnetic valve type, and is located closer to the housing portion 40 than the branch position.

As shown in FIG. 3, the pipe 51 of the valve 45 is connected to the second passage.
It branches off in the middle of 50. The valve body 45 is a valve body 45a,
45b.

Further, the valve 47 has a solenoid 45c, a valve body 45d, and an arm 45e. The valve body 45d is attached to the arm 45e.

 The vitreous surgery will be described with reference to FIGS. 2 and 3.

[Initial state] When the power is turned on, the vacuum pump section 42 and the compression pump 44 operate. At the same time the valve 41 closes and the housing 40
Is in a vacuum state.

The valves 45 and 47 are also closed. That is, referring to FIG. 3, the solenoid 45c is operated in the valve 47 to move the valve body 45d in the direction of the arrow ON to close the second passage 50. In the valve 45, the valve body 45a is closed, and the valve body 45b is opened. Thus the compression pump 44
Is prevented from going to the first passage 8.

[Suction operation] When the foot switch 49 is pressed, the control unit 48 operates the valve 41 to open the valve 41 and suction starts. Then, the suction object 34 is suctioned from the suction hole 30 of the cutter 5 and stored in the storage section 40 through the first passage 8.

When the foot switch 49 is released, the valve 41 closes and the suction stops.

At this time, the valves 45 and 47 remain in the initial state.

[Reflux operation] By the way, during the operation, when the detached retina or the like is aspirated or the fiber which cannot be removed at a time is aspirated, the object to be aspirated enters the first passage 8 and the second passage 50. Clog. In this case, it is necessary to reverse the suction target 34 during suction.

When a reverse flow switch of the foot switch 49 shown in FIG. 2 is turned ON, the valve 41 closes and the valves 47 and 45 open simultaneously. In other words, referring to FIG. 3, the valve body 45d of the valve 47 moves in the direction of the arrow OFF in FIG. Then, the valve body 45b of the valve 45 closes and the valve body 45a opens.

Then, the suctioned objects clogged in the first passage 8 and the second passage 50 are returned to the eyeball 13 side via the cutter 5 by the compressed air.

While the backflow switch on the foot switch 49 is pressed and turned on, the backflow compressed air is sent. However, for the safety of the eyeball 13, the operation of sending compressed air is automatically turned off after a certain period of time while the backflow switch on the foot switch 49 is pressed and turned on, and the valve body 45d of the valve 47 is turned off. It closes in the arrow ON direction and stops before the compressed air enters the eyeball 13. When the backflow operation is stopped, the valve body 45d of the valve 47 is closed, and the valve body 45b of the valve 45 is opened to return to a state of opening to the atmosphere.

By the way, if the power is suddenly cut off during the backflow operation, the valve 47 is turned off and the valve body 45d remains open, but the valve body 45a of the valve 45 is closed,
It is safe because the compressed air is prevented from going to the eyeball 13 from the first passage 8. In this case, the valve 47 may be closed and the valve 45a may be opened. In any case, if at least one of the valves 45 and 47 in the second passage 50 is closed when the power supply is suddenly cut off, the compressed air does not flow to the eyeball 13 side and safety can be ensured.

4 to 6 show a modified embodiment. In each of the embodiments, the object to be aspirated is back-flowed using a perfusate instead of compressed air.

In the embodiment shown in FIG.
It is connected by a passage 108, and a valve 141 is provided in the middle of the passage 108, and a second passage 150 is branched. A valve 180 is provided in the middle of the second passage 150. A vacuum pump section 142 is connected to the housing section 140.

One end of a tube 190 is connected to the second passage 150, and the other end of the tube 190 is connected to the perfusion bolt 1 via a tube 191a.
It leads to 91. The distal end side of the tube 192 branched from the tube 190 is inserted into the eyeball 13. Tubes 190, 191a, and 192 are perfusion channels for perfusate 194. The flexible tube 190 and the squeeze roller 195 are
Make up three.

The perfusion liquid 194 of the perfusion bolt 191 is squeezed by rollers 195.
Is sent to the second passage 150 by the rotation of. At this time, valve 1
41 is closed and valve 180 is open.
From 05, it can be made to flow back into the eyeball 13. The use of this perfusate eliminates the need for compressed air and makes the safety extremely high.

In the embodiment of FIG. 5, the first passage 208 has a valve 241. A vacuum pump 242 is connected to the housing section 240.

The branched second passage 250 includes valves 280 and 281 and a tube 290.
To the perfusion bolt 291. Tube292
Is guided into the eyeball 13. The second passage 250 is swollen between the valves 280 and 281. The part 299 is pushed by the operation of the rod of the solenoid 298 due to the wind-like shape. Solenoid 298 and reservoir 299
Is a pressurizing section.

Open the valve 281 with the perfusate 194 in the perfusion bolt 291,
The valve 280 is closed and put into the reservoir 299. Then, the valve 281 is closed, the valve 280 is opened and the valve 241 is also closed, and the reservoir 299 is pushed by the rod of the solenoid 298, so that the perfusate 194 is sent, and the suctioned object is removed from the cutter 205 by the eyeball 13.
Backflow to the side.

In the embodiment of FIG.
And the piston 370 allows the perfusate 194 to flow through the second passage 35.
From 0, the suction object is sent to the first passage 308 and flows backward from the cutter 305 to the eyeball 13 side. During this backflow, the valve
380 is open and valve 341 is closed.

[Effects of the Invention] As described above, an object to be suctioned can be easily back-flowed as needed during an operation, and the operation can be performed safely and efficiently.

[Brief description of the drawings]

FIG. 1 is a view showing a vitreous surgery apparatus provided with a surgical apparatus with a reflux function of the present invention, FIG. 2 is a view showing an embodiment of the surgical apparatus with a reflux function of the present invention, and FIG. FIGS. 4 to 6 show a first passage and a second passage, and FIGS. 4 to 6 show other embodiments. DESCRIPTION OF SYMBOLS 1 ... Surgical apparatus with regurgitation function 2 ... First passage 13 ... Eyeball 30 ... Suction port 34 ... Suction object 40 ... Accommodation section 42 ... Vacuum pump section 43 ... Pressure section

Claims (4)

(57) [Claims] A suction port for taking in an object to be sucked; a storage section for storing an object to be sucked sucked from the suction port; and a storage section for receiving the object to be suctioned from the suction port. A first passage leading to the first passage, a vacuum pump unit for reducing the pressure in the housing, and a pressurizing unit connected to a second passage branched from the first passage. The object to be sucked is suctioned from the suction port portion after being depressurized, and the object to be sucked sucked into the first passage or the second passage by the pressurizing portion is caused to flow backward in the backward flow. Surgical device with regurgitation function. 2. The first passage has a first valve on a side of the housing portion from a position where the second passage branches, and the second passage has a second valve. The first valve is opened during suction. 2. The surgical device with a regurgitation function according to claim 1, wherein the second valve is closed, and the first valve is closed and the second valve is opened upon regurgitation. apparatus. 3. The pressurizing section is constituted by a compression pump for supplying compressed air, and the second passage is provided with the compressed air of the compression pump at the pressurizing section side of the second valve. The first state to be supplied to the second passage and the second state to be released to the atmosphere
And a third valve for selecting a state, wherein when the operation is stopped, the second valve is closed, and the third valve is configured to be in the second state. A surgical device with a reflux function according to claim 1. 4. The apparatus for surgery is used in eye surgery, wherein the object to be aspirated is the contents of the eyeball and has a perfusion part for injecting a perfusate to replace the eyeball. 2. The apparatus according to claim 1, wherein the part receives a part of the perfusate from the perfusion part, pressurizes the part, supplies the part to the second passage, and reverses the object to be sucked. The surgical device with a reflux function according to the above.