JP2014008362A - Liquid discharger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid discharger capable of easily and surely discharging a liquid stored in a palpebral fissure to the outside of the palpebral fissure.SOLUTION: A liquid discharger 100 comprises: a tip part 11 that is bent downward to a conjunctiva part L at a position located at a prescribed distance from an eyelid edge part N and in a palpebral fissure K; an intermediate part 12 that exists with a clearance d1 at an upper part of the eyelid edge part N; and a rear part 13 that is bent downward to an eyelid part M at a position located distant from the eyelid edge part N and outside the palpebral fissure K. The tip part 11, the intermediate part 12 and the rear part 13 integrally form an arc shape. The liquid discharger is installed in the form of crossing the eyelid edge part N from the conjunctiva part L in the palpebral fissure K to the eyelid part M outside the palpebral fissure K. Accordingly, in a section from the tip part 11 to the intermediate part 12, a serial liquid discharge passage R1 consisting of the clearances d1 and d2 is formed between the conjunctiva part L and the eyelid part M. Therefore, the liquid discharger can easily and surely discharge the liquid stored in the palpebral fissure K, while passing the liquid through the liquid discharge passage R1, to the outside of the palpebral fissure.

Description

  The present invention relates to a drainage device for discharging a liquid that accumulates in a fissure and interferes with the operation during ophthalmic surgery such as cataract.

  In general, at the time of cataract surgery or other ophthalmic surgery, a liquid applied from the syringe to the surface of the eyeball to maintain the transparency of the cornea or a large amount of liquid is supplied from the surgical machine into the fissure. If the liquid supplied into the fissure is stored in the fissure here, the visibility of the operator will be reduced, causing intraoperative complications, or bacteria may be mixed in the stored liquid and postoperative bacterial May cause endophthalmitis. In particular, in the case of a person whose eyeball is in a deep position (back), the above-described liquid storage is likely to occur.

  As a method for preventing the accumulation of liquid in the above-described crack, a method in which liquid is soaked in gauze or sponge and discharged has been used. However, this method has a very weak drainage capacity and cannot cope with a modern operation such as an ultrasonic cataract operation in which a large amount of liquid is supplied.

  At present, the most commonly used method of draining is to provide a hole or groove in the arm part of the center of the eyelid device that opens the eyelids during the operation, and the hole in the arm part and the electric pump Are connected by a tube, and the liquid stored in the fissure is sucked by the suction force of the pump to be discharged. However, even with this method, the eyelids are thick and the eyelids are narrow, or the eyes, such as the back eyes, are liable to store liquids, so that sufficient drainage ability cannot be exhibited. In addition, the pump drive power is required, the sound when sucking the liquid is loud, and the conjunctiva part that has been relaxed by the elderly easily gets stuck in the absorption hole of the pump and prevents liquid absorption or causes pain. It was also a weak point.

  In order to cope with the above-mentioned problem, in recent years, the liquid stored in the fissure is discharged by disposing it at the outer eye corner (eye corner) or the eyelid edge in the vicinity thereof without using a pump. A container is known (see, for example, Patent Documents 1 and 2 below). In each of the drainage devices of Patent Documents 1 and 2, the liquid moves and drains by a capillary phenomenon or the like in a space formed between the main body and the eyelid portion.

  Specifically, the drainage device of Patent Document 1 includes a main body that is placed at a predetermined interval from a placement surface on the eyelid portion in the vicinity of the outer eye corner. The main body has a flat sheet-like structure, and is generally trapezoidal in the developed state and is formed of a waterproof material. In addition, the main body is provided with a protruding portion that protrudes inwardly at the rupture edge, and the protruding portion is provided with a hanging portion that hangs down toward the conjunctival portion near the outer eye corner. Then, the liquid in the fissure is attached to the back surface of the protruding portion, the liquid is drawn out into the gap between the main body and the placement surface, and the liquid is passed through the gap between the main body and the placement surface on the eyelid portion. Discharge to the outside.

  The drainage device of Patent Document 2 has a hook-like structure in which the tip of the main body (body portion) is formed in a spatula shape, and the hook portion is installed by inserting it into the blepharoconjunctival sac or drape of the outer eye corner. . Then, the liquid is allowed to reach the surface of the tail part of the main body through the gap between the eyelid edge side surface and the eyelid edge or drape in the abdomen of the main body, and the liquid is discharged.

Japanese Patent No. 4572378 Patent 48066731

  However, the conventional ejectors have the following problems.

  All conventional drainers are installed by hooking a hanging part or a hook part at the tip of the main body to the lid edge of the outer eye corner. However, since the thickness and shape of the eyelid, the depth of the eyeball, etc. vary from person to person, the size of the gap between the drainage device and the eyelid changes depending on the person, so the drainage effect is very weak. Or there may be no effect, and there is a problem that it is easily influenced by individual differences in the thickness and shape of the eyelid, the depth of the eyeball, and the like. In addition, it may be installed without hanging the hanging part or hook part, but especially when the eyelid part is thick or the eyeball is deep, the protrusion and hook part are far away from the conjunctiva part. It becomes difficult to attach, and it becomes difficult to draw the liquid between the main body and the eyelid part. Therefore, in this case as well, there arises a problem that it is easily influenced by individual differences in the thickness and shape of the eyelid, the depth of the eyeball, and the like.

  In addition, since all conventional drainage devices are installed on the lid edge at the corner of the outer eye, the surgical instrument touches the drainage device and is operated by the surgeon sitting beside the patient. It became difficult to do and was an obstacle to surgery. In particular, the drainage device of Patent Document 1 has a plate-like structure, the overall shape in the unfolded state is substantially trapezoidal, and the width is relatively wide, so that the operation of the surgical instrument is likely to be hindered.

  Further, since all of the conventional drainage devices are structured to be hooked on the eyelid edge of the outer eye corner, there is a problem that the eyelid edge is easily damaged. In particular, in the case of the drainage device of Patent Document 2, since the hook portion made of metal or the like is inserted into the blepharoconjunctival sac of the outer eye corner portion, there is a risk of causing pain to the patient.

  In addition, in the case of the drainage device of Patent Document 1, simply hooking a short thin hook portion on the eyelid portion may come off during the operation, and the body must be folded to match the shape of each patient's eye. In other words, there is a problem that a complicated operation is required.

  In addition, in the case of the drainage device of Patent Document 2, when the amount of liquid in the fissure increases, the drainage device itself may dam the liquid at the lid edge of the outer eye corner. It was.

  Furthermore, all of the conventional drainers have a problem that the size of the gap between the main body and the eyelid or conjunctiva cannot be changed during the operation. For this reason, it was difficult to cope with the amount of liquid supplied into the fissure and subconjunctival edema during surgery (a phenomenon in which liquid supplied from a surgical machine etc. entered the conjunctiva from the incision wound). . In fact, in both drainage devices of Patent Documents 1 and 2, it was easy to store liquid in the eyelid when the anterior capsulotomy with low liquid supply or when the supply volume of liquid was very high by raising the perfusion bottle . Further, when subconjunctival edema occurred, the drainage path was blocked by the rise of the conjunctival surface, and the drainage effect could hardly be exhibited.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a drainage device that can easily and reliably discharge the liquid stored in the crack outside the crack.

  In order to achieve the above object, the drainage device according to the present invention relates to a device for discharging the liquid stored in the fissure during ophthalmic surgery to the outside of the fissure. The drainage device according to the present invention is present with a predetermined gap above the eyelid edge and a tip part bent downward toward the conjunctival part in the fissure separated from the eyelid edge by a predetermined distance. An intermediate portion and a rear portion that is bent downward toward the eyelid portion outside the fissure separated by a predetermined distance, and is formed in an arch shape throughout the tip portion, the intermediate portion, and the rear portion, and the conjunctival portion in the fissure It is installed in the aspect which straddles the eyelid edge part from the eyelid part outside the fissure.

  According to this, the arch-shaped drainage device is installed in such a manner as to straddle the eyelid edge from the conjunctival portion in the fissure to the eyelid portion outside the fissure, so that the conjunctiva or eyelid extends from the tip portion to the intermediate portion. A series of drainage passages having a predetermined gap is formed between the two portions. For this reason, the liquid stored in the crack can be easily and reliably discharged out of the crack while passing through the drainage passage.

  Moreover, it is preferable that a front-end | tip part and an intermediate part consist of a water absorbing material. According to this, since the 2nd drainage channel which absorbs and discharges the liquid to the inside of a tip part and an intermediate part is formed, the 2nd drainage channel was also stored in the crack together with this 2nd drainage channel Liquid can be discharged out of the crack more easily and reliably. Also, when the amount of liquid supplied into the fissure or when subconjunctival edema occurs during surgery, the tip or middle part moves up and down due to the flexibility of the absorbent member. be able to.

  Moreover, it is preferable to form in the aspect which becomes thin as it goes to a front-end | tip part from an intermediate part. According to this, the liquid in the crack can easily enter the drainage path from the vicinity of the tip, and the liquid in the crack can be efficiently discharged. Further, since the space where the drainage device is present at the surgical site is also reduced, it becomes easier for the operator to operate the surgical instrument. Furthermore, since the contact area between the distal end portion and the conjunctival portion in the fissure is reduced, the burden on the conjunctival portion can be reduced.

  Moreover, it is preferable that the front-end | tip part is formed in the aspect branched into multiple. According to this, the liquid in the fissure can be adsorbed from a plurality of locations, and the liquid can be passed through the drainage path formed by the gap between the tip and rear portions and the conjunctiva portion and the eyelid portion. can do. Moreover, when it consists of a water absorptive material, a liquid can be discharged | emitted more effectively.

  Moreover, it is preferable that the lower surface of the intermediate part is provided with a protruding member for supporting the intermediate part. According to this, since the protruding member supports the intermediate portion by contacting the eyelid portion or the drape, it becomes easy to maintain the drainage path between the intermediate portion and the eyelid portion.

  Further, it is preferable that a plate-like or sheet-like support auxiliary member extending toward the front end is provided at the lower end of the rear part. According to this, since the contact area of this drainage device and the eyelid part or drape becomes large, this drainage device can be installed stably.

  Moreover, it is preferable that a protrusion member for supporting the intermediate portion is provided on the upper surface of the support auxiliary member. According to this, since the projection member supports the intermediate portion by contacting the lower surface of the intermediate portion, it is easy to maintain the drainage path between the intermediate portion and the eyelid portion.

  Further, it is preferable that the upper surfaces of the rear part and the intermediate part are coated with a plate-like or sheet-like hard frame member. According to this, since the shape is fixed from the rear part to the intermediate part, deformation of the rear part and the intermediate part can be prevented, and the drainage path between the intermediate part and the eyelid part can be easily maintained.

  Moreover, it is preferable that the rear part is provided with a support member made of a hard material for supporting the intermediate part and the front part of the rear part on the rear side. According to this, since the support member made of a hard material supports the intermediate part and the front part of the rear part, it becomes easy to maintain a drainage path between the intermediate part and the eyelid part.

  Moreover, it is preferable that the rear part is formed with a liquid circulation hole penetrating in the length direction of the drainage device. According to this, since a part of the liquid that has passed through the drainage path between the intermediate part and the eyelid part passes through the rear liquid circulation hole, the liquid can be smoothly discharged out of the fissure.

  Moreover, it is preferable that the notch part is formed in the lower surface of the connection part of an intermediate part and a rear part along the direction which cross | intersects the length direction of a drainage device. According to this, since the distal end portion and the intermediate portion have a hinge structure that moves up and down through the notch portion, the distal end portion and the intermediate portion move in the vertical direction in accordance with the shape of the eyeball or eyelid portion. Can do. Further, the tip portion and the intermediate portion can be moved in the vertical direction according to the amount of liquid supplied into the crack. In addition, even when subconjunctival edema occurs during surgery, the tip and intermediate portions can move upward in response to the rise of the conjunctival surface.

  According to the present invention, the arch-shaped drainage device is installed in such a manner as to straddle the eyelid edge from the conjunctival portion in the fissure to the eyelid portion outside the fissure, so that the conjunctiva portion and the eyelid are stretched from the tip portion to the rear portion. A series of drainage passages having a predetermined gap is formed between the two portions. For this reason, the liquid stored in the crack can be easily and reliably discharged out of the crack while passing through the drainage passage.

  Moreover, since it arrange | positions straddling an eyelid edge part, it is not influenced by the individual difference in the thickness and shape of a person's eyelid part, the depth of an eyeball, etc., and a drainage effect can always be maintained. Therefore, even when the eyeball is deep, the drainage can be reliably discharged.

  In addition, as long as the tip part is a conjunctival part separated from the eyelid edge by a predetermined distance and the rear part is an eyelid part separated from the eyelid edge by a predetermined distance, for example, it may be installed anywhere such as the lower eyelid part. Even for an operator who sits beside the patient and performs an operation, the surgical instrument does not touch the drainage device, and the surgical instrument can be easily operated.

  Moreover, since it is not the structure hooked on the eyelid edge part of an external eye corner part, the eyelid edge part is not damaged, and the burden of an operation can be reduced with respect to a patient.

  In addition, it is necessary to install the tip part in the conjunctiva part separated from the eyelid edge by a predetermined distance and the rear part to be installed in the eyelid part separated from the eyelid edge by a predetermined distance. Surgery can be started promptly without the need for complicated work such as.

  In addition, because it is placed across the lid edge, the drainage device itself does not block the liquid at the lid edge, and the amount of liquid supplied into the fissure or subconjunctiva during surgery When edema occurs, it can be dealt with reliably, and smooth ophthalmic surgery can be realized.

It is a perspective view which shows the drainage device which concerns on 1st Embodiment. It is (a) top view and (b) side view which show the installation state of the drainage device of FIG. It is a side view which shows the use condition of the drainage device of FIG. It is a side view which shows the installation state of the modification in the drainage device of FIG. It is a side view which shows the installation state of the modification in the drainage device of FIG. It is a top view which shows the installation state of the modification in the drainage device of FIG. It is (a) side view and (b) bottom view which show the drainage device which concerns on 2nd Embodiment. It is the side view and its bottom view which show the installation state of the modification in the drainage device of FIG. FIG. 8A is a side view showing an installation state of a modification of the drainage device of FIG. 7, and FIG. 8B is a perspective view showing a rear portion of the drainage device. It is a side view which shows the installation state of the drainage device which concerns on 3rd Embodiment. It is a perspective view which shows the drainage device which concerns on 4th Embodiment.

<First Embodiment>
A first embodiment of a drainage device according to the present invention will be described with reference to FIGS.

[Configuration of the present drainer 100]
As shown in FIG. 1, the drainage device 100 according to the present embodiment includes a front end portion 11 located on the front side, an intermediate portion 12 located behind the front end portion 11, and a rear side of the intermediate portion 12. The rear portion 13 is positioned, and the front end portion 11, the intermediate portion 12 and the rear portion 13 are connected in series in the length direction to constitute one drainage device. In FIG. 1, the boundary portion between the tip portion 11, the intermediate portion 12, and the rear portion 13 is shown by a one-dot chain line, but this is a virtual line for convenience of explanation.

  Specifically, the distal end portion 11 is formed in a manner that it bends downward toward the front side, and the rear end portion is integrally continuous with the front end portion of the intermediate portion 12. The intermediate portion 12 extends substantially horizontally from the front end portion toward the rear end portion, and the rear end portion is integrally continuous with the front end portion of the rear portion 13. Further, the rear portion 13 is formed so as to bend downward toward the rear side, and the tip portion 11, the intermediate portion 12, and the rear portion 13 are formed in an arch shape.

  Further, in the drainage device 100, the lower surfaces of the tip portion 11, the intermediate portion 12, and the rear portion 13 are continuous from the front side to the rear side, whereby the drainage device 100 forms a series of lower surfaces 10a. ing. Further, the top surface and the left and right side surfaces of the drainage device 100 also have a series of top surfaces 10b formed by the top surfaces of the tip portion 11, the intermediate portion 12 and the rear portion 13, and the tip portion 11 and the intermediate portion 12 as well. A series of side surfaces 10c is formed by the rear portion 13 continuing from the respective side surfaces. For this reason, when the drainage device 100 is installed at the corner of the outer eye as will be described later, a first drainage channel R1 for discharging the liquid in the tear K is formed below the lower surface 10a. Can do.

  Further, the drainage device 100 is formed so as to become narrower from the intermediate portion 12 toward the distal end portion 11, and is formed into a tapered and slender shape as a whole.

  In addition, the drainage device 100 is provided with an adhesive material on the rear end surface 13a of the rear portion 13, and the rear drain surface 13a is adhered to the eyelid portion M or the drape pasted on the eyelid portion M, thereby discharging the main drainage. The container 100 can be installed stably.

  Further, in the drainage device 100, the front end portion 11, the intermediate portion 12, and the rear portion 13 are made of a material having high water absorption, typically sponge. Any material can be used as a material of the drainage device 100 as long as it exhibits high wettability and water absorption, and can be formed into the shape of the drainage device 100 described above. Examples of the raw material include sponge-like formations (continuous porous bodies of various resins) formed by continuous foaming, and fiber formations such as paper and nonwoven fabric. A general-purpose melanin sponge is preferable as a general material, but cellulose sponge and polyvinyl alcohol sponge are already used for medical purposes and exhibit high water absorption. Since the drainage device 100 is made of a water-absorbing material, the second drainage that absorbs the liquid in the crack K from the tip portion 11 and discharges it from the intermediate portion 12 and the rear portion 13 as will be described later. The liquid path R2 can be formed.

[Installation method of the drainer 100]
Next, an installation method of the drainer 100 will be described with reference to FIG. In the following description, as shown in FIG. 2A, the eyelid part M of the patient is equipped with an eyelider Z that opens the upper and lower eyelid margins N. Moreover, although the drape is generally stuck on the eyelid part M, illustration of drape is abbreviate | omitted.

  As shown in FIG. 2, the drainage device 100 is installed with the distal end portion 11 placed on the conjunctival portion L in the rupture K and the rear portion 13 placed on the drape of the eyelid portion M outside the rupture K. To do. Specifically, the distal end portion 11 is bent on the surface of the conjunctival portion L by bending toward the conjunctival portion L in the fissure K at a predetermined distance x from the lid edge N so as to leave a gap d1. The rear part 13 is bent downward toward the eyelid part M outside the fissure K at a predetermined distance from the eyelid edge N, and is placed on the drape on the eyelid part M, and the intermediate part 12 is the eyelid edge N and a state in which a gap d2 is opened above the eyelid part M. By doing so, the drainage device 100 formed in an arch shape extends across the lid edge N while leaving gaps d1 and d2 between the conjunctival portion L and the lid portion M from the front end portion 11 to the rear portion 13. Will be installed.

  When the drainage device 100 is installed, the distal end portion 11 is a conjunctival portion L with a predetermined distance x from the eyelid edge N, and the rear portion 13 is an eyelid portion M with a predetermined distance from the eyelid edge N. It can be installed anywhere. For this reason, for example, if it is installed from the lower conjunctival part L to the lower eyelid part M, which hardly interferes with the operation of the surgical instrument, the surgical instrument can be used by the surgical drainer 100 even for an operator who sits beside the patient and performs an operation. This makes it easier to operate the surgical instrument. However, it is preferable to install the distal end portion 11 in the conjunctival portion L between the lid edge N and the cornea O, regardless of which direction the drainage device 100 is installed.

  In addition, it is possible to install the distal end portion 11 at a position close to the lid edge N (a distance that is in contact with the lid edge N). However, when the gap d1 is reduced, the liquid flows into the gap d2. Since the drainage effect may be somewhat reduced due to hindrance to the eyelid, the eyelid margin is secured by ensuring a gap d1 in a mode in which the predetermined distance x from the distal end portion 11 to the lid margin N is 2 to 6 mm. It is preferable to avoid installation at a position close to the portion N.

[Drainage mechanism of the drainer 100]
Next, the drainage mechanism of the drainer 100 will be described with reference to FIG.

  During ophthalmic surgery, the drainage device 100 is installed as described above, and liquid is supplied into the rupture K from a syringe, a surgical machine, or the like. Then, as shown in FIG. 3, a series of first drainage channels R <b> 1 including gaps d <b> 1 and d <b> 2 are formed between the conjunctival portion L and the eyelid portion M over the distal end portion 11, the intermediate portion 12, and the rear portion 13. . That is, the liquid that accumulates in the crack K or overflows from the crack K to the outside of the crack K is a gap d1 between the lower surface 10a of the drainage device 100 (the lower surface of the tip portion 11) and the conjunctiva L, and Capillary phenomenon generated by the gap d2 between the lower surface 10a of the drainage device 100 (the lower surface of the intermediate portion 12) and the drape on the eyelid edge N and the eyelid portion M, the Coanda effect, the self weight of the liquid and the tip portion 11 and Due to the fall of the liquid caused by the height difference of the rear portion 13, the lower surface 10a (mainly entering from the lower surface of the distal end portion 11 installed on the conjunctival portion L separated from the eyelid edge N by a predetermined distance x. A first drain consisting of gaps d1 and d2 formed in series between the conjunctival portion L, the lid edge N, and the drape on the lid M, which may be included in the side surface of the tip portion 11). It flows down from the rear part 13 through the liquid passage R1, and is discharged out of the crack K. It is.

  Further, since the drainage device 100 is made of a material having good water absorption, in addition to the first drainage path R1, the liquid is sucked into the interior from the front end portion 11, and the rear portion 13 is interposed via the intermediate portion 12. A second drainage path R2 is formed to discharge from the liquid, and the liquid stored in the crack K is discharged together with the second drainage path R2. Moreover, since the second drainage path R2 is formed, when the amount of liquid supplied into the rupture K during the operation is small (when the anterior capsulotomy or intraocular lens is inserted), When the fluid is discharged through the second drainage channel R2 and the amount of liquid is large (during phacoemulsification and cortical suction), it is drained mainly through the first drainage channel R1, so that Effective drainage can be performed in a situation.

  Thus, the arch-shaped drainage device 100 is installed in such a manner as to straddle the lid edge N from the conjunctival portion L in the rupture K to the eyelid M outside the rupture K. A series of first drainage paths R <b> 1 including gaps d <b> 1 and d <b> 2 are formed between the conjunctiva L and the drape on the eyelid M over the part 12 and the rear part 13. For this reason, the liquid stored in the crack K can be easily and reliably discharged out of the crack K while passing through the first drainage channel R1. Moreover, the liquid stored in the crack K can be easily and reliably discharged out of the crack K together with the second drainage channel R2.

[Effects of the present invention]
Since the drainage device 100 is arranged as described above, the drainage effect can always be maintained without being affected by individual differences in the thickness and shape of the human eyelid M, the depth of the eyeball, and the like. it can. Therefore, for example, even when the eyeball is at a deep position, the drainage can be reliably discharged.

  Moreover, since it is not the structure hooked on the eyelid marginal part N, the eyelid marginal part N is not damaged and the burden of surgery can be reduced with respect to a patient.

  In addition, it is only necessary to install the distal end portion 11 in the conjunctival portion L separated from the lid edge N by a predetermined distance x and the rear portion 13 in the eyelid portion M separated from the lid edge N by a predetermined distance. The operation can be started promptly without the need for complicated work such as folding something during installation.

  In addition, since the liquid drainage device 100 itself does not dam the liquid at the eyelid marginal portion N, the liquid supply amount into the rupture K is slightly increased. Even when subconjunctival edema occurs during surgery, it is possible to reliably cope with it, and smooth ophthalmic surgery can be realized.

  In addition, since the present drainage device 100 uses a sponge that exhibits the highest water absorption among all the materials, the width of the drainage device 100 is reduced so as not to hinder the operation of the surgical instrument. Even if it is narrowly formed, the drainage capacity can be highly dependent. Furthermore, since the amount of liquid held in the gaps d1 and d2 between the eyelid part M and the lower surface 10a of the present drainer 100 is also maximized, high drainage capability can be exhibited.

  In addition, since the thickness of the intermediate portion 12 decreases toward the tip portion 11, the liquid in the crack K easily enters the first drainage path R1 from the vicinity of the tip portion 11, and the liquid in the crack K Can be discharged efficiently. Further, since the space where the drainage device 100 is present at the surgical site is also reduced, it becomes easier for the operator to operate the surgical instrument. Furthermore, since the contact area between the distal end portion 11 and the conjunctival portion L in the crack K is reduced, the burden on the conjunctival portion L can be reduced.

  Further, the above-described drainage device 100 has the following capabilities: the lower surface 10a (the tip 11 and the intermediate portion) of the present drainage device 100 for maximizing the liquid adsorption and water absorption of the material, the capillary phenomenon and the Coanda effect. It depends on the size and shape of the gaps d1 and d2 between the lower surface of the part 12 and the conjunctival part L or the eyelid part M (drape). As for the size of the gap d1, it is preferable that the predetermined distance x between the distal end portion 11 and the lid edge N is 2 to 6 mm as described above. On the other hand, the size of the gap d2 (height in the vertical direction) is set to about 2 to 10 mm when the lower surface 10a of the drainage device 100 is a plane as in the present embodiment during ultrasonic cataract surgery. When the amount of liquid supplied into the rupture K during surgery is small (narrow at the time of anterior capsule incision or insertion of an intraocular lens, the larger the amount of liquid, the gap d2 The gap d2 is more independent of the size of the gap d2 as the material of the drainage device 100 is more water-absorbing (even if it is slightly smaller or larger). It is known that the smaller the water absorption, the more limited the size of the gap d2 (the effect is lost if it is too small or too large.) A method for maintaining the gap d2 at an appropriate size is as follows. There are several possibilities, and this method will be described later as a modification. And the.

  In addition, although this embodiment demonstrated the case where this drainage device 100 was comprised with the water absorbing material, it may not be a water absorbing material.

  Moreover, although the case where it formed in the aspect which becomes thin as it goes to the front-end | tip part 11 from the intermediate part 12 was demonstrated, it does not need to be formed in the aspect which becomes thin.

  Moreover, although the case where the adhesive material was provided in the back end surface 13a of the rear part 13 was demonstrated, the adhesive material does not need to be provided.

  Next, a modified example of the drainage device according to the present embodiment will be described with reference to FIGS. Only the configuration different from the above embodiment will be described, and the description of the same configuration will be omitted and the same reference numeral will be given.

(Modification 1-1)
As shown in FIG. 4A, the drainage device 101 according to this modification has a plate-like (or sheet-like) support auxiliary member 14 extending toward the front end portion 11 at the lower end portion of the rear portion 13. Is provided. The supporting auxiliary member 14 is provided with an adhesive material on the lower surface, and since the contact area between the drainage device 101 and the eyelid part M or the drape on the eyelid part M is increased, the drainage device 101 is stabilized. Can be installed.

  Moreover, the support auxiliary member 14 can enhance the drainage capacity by applying a coating having a leaking property or by using a material having good water absorption. Moreover, you may comprise with hard materials, such as a plastic, and this makes the drainage device 101 easy to handle.

(Modification 1-2)
As shown in FIG. 4B, the drainage device 102 according to this modification is provided with a hook portion 15 that is hooked to the lid edge N at the tip of the support auxiliary member 14. By hooking the hook portion 15, the support auxiliary portion 14 is fixed, so that the entire drainage device 102 can be stably supported. Further, when the predetermined distance x between the hook portion 15 and the distal end portion 11 is set to 2 to 6 mm, the gap d1 between the distal end portion 11 and the eyelid edge portion N is maintained at an appropriate size. It is possible to stably discharge the effective liquid while fixing the whole.

(Modification 1-3)
As shown in FIG. 4 (c), the drainage device 103 according to this modification is provided with a protruding member 16 for supporting the intermediate portion 12 on the upper surface of the support auxiliary member 14. Since the protruding member 16 contacts the lower surface of the intermediate portion 12 to support the intermediate portion 12, it becomes easy to maintain a drainage path between the intermediate portion 12 (lower surface 10a) and the eyelid portion M (drape). That is, since the height from the drape on the eyelid part M to the intermediate part 12 is maintained at an appropriate size, it is possible to stably discharge the liquid effectively.

(Modification 1-4)
As shown in FIG. 5A, the drainage device 104 according to this modification is provided with a thin and flexible extension member 17 at the distal end portion 11. By inserting the extension member 17 below the lid edge N, the distal end portion 11 and thus the drainage device 104 can be fixed.

(Modification 1-5)
As shown in FIG. 5 (b), the drainage device 105 according to the present modification is a plate-shaped (or sheet-shaped) water-absorbing support assist that extends toward the front end portion 11 at the rear end portion of the rear portion 23. A member 14 is provided, and the tip thereof is connected to the tip portion 11.

(Modification 1-6)
As shown in FIG. 5C, the drainage device 106 according to this modification is covered with a plate-like (or sheet-like) hard frame member 18 from the rear portion 13 to the upper surface of the intermediate portion 12. The hard frame member 18 is, for example, plastic, and when the drainage device 106 is made of a soft material such as sponge, the shape is fixed from the rear portion 13 to the intermediate portion 12, so that the rear portion 13 and the intermediate portion 12 Deformation can be prevented, and a drainage path between the intermediate portion 12 and the eyelid portion M can be easily maintained.

(Modification 1-7)
In this modified example, as shown in FIG. 6, the drainage device 100 is provided in the eyelid opening device Z ′ by the connecting member Y. Specifically, the rear portion 13 of the drainage device 100 is fixed so as to be inserted into the connecting member Y, and the drainage device 100 is fixed at a predetermined position by fixing the eyelid device Z ′ to the eyelid portion M of the patient. It can be installed easily and reliably.

<Second Embodiment>
Next, a second embodiment of the drainage device according to the present invention will be described with reference to FIG. In the following, only the configuration different from the above embodiment will be described, and the description of the same configuration will be omitted and the same reference numeral will be given.

  As shown in FIG. 7, the drainage device 200 according to the present embodiment includes a support member 33 b made of a hard material for the rear portion 33 to support the intermediate portion 12 and the rear front portion 33 a on the rear side. Specifically, the rear portion 33 includes a rear front portion 33a that is continuous with the rear end portion of the intermediate portion 12, and a support member 33b that is provided so as to bend downward from the rear front portion 33a. In addition, since the support member 33b made of a hard material supports the intermediate portion 12 and the rear front portion 33a, it is easy to maintain the first drainage path R1 (gap d1, d2) between the intermediate portion 12 and the eyelid portion M. Become.

  Next, a modified example of the drainage device according to the present embodiment will be described with reference to FIGS. 8 and 9.

(Modification 2-1)
As shown in FIG. 8A, in the drainage device 201 according to this modification, the rear portion 43 has two support members 43b juxtaposed in the width direction. In addition, a projecting member 19 for supporting the intermediate portion 12 is provided on the lower surface of the intermediate portion 12. Accordingly, a part of the liquid flowing through the first drainage path R1 (gap d1, d2) passes between the support members 43b, so that the liquid can be smoothly discharged out of the crack K.

(Modification 2-2)
As shown in FIG. 8B, the drainage device 202 according to the present modification includes a support member 53b having a rear portion 53 formed in a convex shape at the front center. Further, on the lower surface of the intermediate portion 12, there is provided a protruding member 19 ′ that extends in the length direction of the drainage device 202 and connects the rear end portion to the convex portion of the support member 53b. As a result, the liquid in the first drainage path R1 whose flow path is branched by the protruding member 19 ′ can be smoothly discharged to the rear side of the drainage device 202.

(Modification 2-3)
As shown in FIG. 9, in the drainage device 203 according to this modification, the rear portion 63 includes a rear front portion 63a and a support member 63b having a separate structure. The support member 63b includes an upper support portion 631 that is formed in a U-shape so as to sandwich the intermediate portion 12 and the rear front portion 63a, an intermediate support portion 632 that extends downward from the upper support portion 631, and an intermediate support And a sheet-like (or plate-like) lower support portion 633 extending from the lower end portion of the portion 632 toward the distal end portion 11 of the drainage device 203. Further, in the rear portion 63, a liquid circulation hole 632 a that penetrates in the length direction of the drainage device 203 is formed in the middle support portion 632. Thereby, a part of the liquid flowing through the first drainage path R1 (gap d1, d2) passes through the liquid circulation hole 632a of the rear portion 63, so that the liquid can be smoothly discharged out of the crack K.

<Third Embodiment>
Next, a third embodiment of the drainage device according to the present invention will be described with reference to FIG. In the following description, only the configuration different from the above embodiments will be described, and the description of the same configuration will be omitted and the same reference numeral will be given.

  As shown in FIG. 10, the drainage device 300 according to the present embodiment has a notch portion 20 on the lower surface of the connecting portion between the intermediate portion 12 and the rear portion 13 along a direction orthogonal to the length direction of the drainage device 300. A hinge structure is formed in which the distal end portion 11 and the intermediate portion 12 move up and down via the notch portion 20. Therefore, even if the height of the adhesion point between the distal end portion 11 and the conjunctival portion L varies depending on individual differences such as the thickness and shape of the eyelid portion M and the depth of the eyeball due to this hinge structure, The distal end portion 11 and the intermediate portion 12 can move in the vertical direction according to the thickness, shape, depth of the eyeball, and the like.

  In addition, as shown in FIG. 10 (a), the liquid supplied from the surgical machine or the like during the operation enters the conjunctiva from the incision wound and causes subconjunctival edema, and the surface of the conjunctival portion L ′ rises. In addition, the tip portion 11 and the intermediate portion 12 can move upward in response to a rise in the surface of the conjunctival portion L ′.

  Also, as shown in FIG. 10 (b), when the amount of liquid supplied by the operation is small (at the time of anterior capsulotomy or when an intraocular lens is inserted) or when the amount is large (super When the sonic cataract surgery device is used to emulsify the nucleus and suck the cortex), as described in the first embodiment, when the liquid supply amount is small, the drainage device 300 The smaller the size of the gaps d1 and d2 between the lower surface 10a and the drape on the conjunctival portion L or the eyelid portion M, the better the drainage effect, and the larger the amount of liquid supply, the larger the size of the gap d1. The drainage effect is better. For this reason, the tip 11 and the intermediate part 12 move up and down in accordance with the amount of liquid supplied into the crack K by the hinge structure provided with the notch 20 in the drainage device 300. This can be dealt with by changing the size of the gaps d1 and d2 (see FIG. 10A). For this reason, even if the supply amount of the liquid supplied into the crack K is small or large, the liquid can be effectively drained.

  As described above, due to the hinge structure formed by the notch portion 20 configured in the drainage device 300, the distance between the distal end portion 11 and the intermediate portion 12 and the conjunctival portion L ′ and the eyelid portion M can be reduced depending on the amount of liquid supplied. The amount of drainage is changed and the drainage amount is adjusted, and effective drainage is possible even if the supply amount of the liquid is small or very large. Further, even if some subconjunctival edema is caused, it is possible to prevent the drainage path from being blocked due to the rise of the tip 11 as the surface of the conjunctival portion L rises.

  In any of the embodiments described above, the distal end portion 11 is not limited to those illustrated in FIGS. 1 to 10 and may have other various shapes. For example, as shown in FIG. 11, the drainage device 400 may be formed in such a manner that the tip portion 21 branches into two (or three or more). As a result, the liquid in the rupture K is adsorbed from a plurality of locations, and passes through the drainage path formed by the gaps d1 and d2 between the distal end portion 21, the intermediate portion 12 and the rear portion 13, and the conjunctival portion L and the eyelid portion M. Therefore, the liquid can be effectively discharged. Further, the intermediate portion 12 is not limited to that illustrated in FIGS. 1 to 11 and may have other various shapes.

  Moreover, although the case where the liquid circulation hole 632a was formed in the rear part 63 of the drainage device 203 was demonstrated, the liquid circulation hole may be formed in the rear part of another drainage device.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to the thing of embodiment shown in figure. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

DESCRIPTION OF SYMBOLS 100 ... Drainage device 11 ... Tip part 12 ... Middle part 13 ... Rear part K ... Rupture L ... Conjunctiva part M ... Eyelid part N ... Eyelid margin

Claims (11)

A drainage device that drains liquid that accumulates in the fissure during ophthalmic surgery to the outside of the fissure,
A tip that bends downward toward the conjunctival portion in the fissure separated from the eyelid margin by a predetermined distance;
An intermediate portion that exists with a predetermined gap above the lid edge;
A rear part that bends downward toward the eyelid part outside the fissure separated from the eyelid edge by a predetermined distance;
A drainage device that is formed in an arch shape throughout the tip, middle, and rear, and is installed in a manner that straddles the lid margin from the conjunctival portion in the fissure to the eyelid portion outside the fissure.   The drainage device according to claim 1, wherein the tip portion and the intermediate portion are made of a water-absorbing material.   The drainage device according to claim 1 or 2, wherein the drainage device is formed so as to become narrower from the intermediate portion toward the tip portion.   The drainage device according to any one of claims 1 to 3, wherein the tip portion is formed in a manner of branching into a plurality of portions.   The drainage device according to any one of claims 1 to 4, wherein a projecting member for supporting the intermediate portion is provided on a lower surface of the intermediate portion.   The drainage device according to any one of claims 1 to 5, wherein a plate-like or sheet-like support auxiliary member extending toward the tip end portion is provided at a lower end portion of the rear portion.   The drainage device according to claim 6, wherein a protrusion member for supporting the intermediate portion is provided on the upper surface of the support auxiliary member.   The drainage device according to any one of claims 1 to 7, wherein upper surfaces of the rear portion and the intermediate portion are covered with a plate-like or sheet-like hard frame member.   The drainage device according to any one of claims 1 to 8, wherein the rear portion includes a support member made of a hard material for supporting the intermediate portion and the front of the rear portion on the rear side.   The drainage device according to any one of claims 1 to 9, wherein the rear portion is formed with a liquid circulation hole penetrating in a length direction of the drainage device.   The drainage device according to any one of claims 1 to 10, wherein a notch portion is formed in a lower surface of a connection portion between the intermediate portion and the rear portion along a direction intersecting with a length direction of the drainage device.