KR101945992B1

KR101945992B1 - Phacoemulsification infusion sleeve

Info

Publication number: KR101945992B1
Application number: KR1020170010681A
Authority: KR
Inventors: 김명준; 문찬희; 최재순; 권지훈
Original assignee: 재단법인 아산사회복지재단; 울산대학교 산학협력단
Priority date: 2017-01-23
Filing date: 2017-01-23
Publication date: 2019-02-08
Also published as: KR20180086797A; WO2018135825A1

Abstract

One embodiment of the present invention is directed to an ultrasonic emulsion suction needle for use in an ultrasonic emulsion suction needle, comprising: a main body having a distal end and a distal end; And a discharge part formed on an outer surface of the distal end and discharging the perfusion liquid in all 360 degrees with respect to a central axis passing through the main body part and the enlarged section.

Description

{PHACOEMULSIFICATION INFUSION SLEEVE}

The present invention relates to a perfusion sleeve for ultrasonic emulsion suction.

Ultrasonic emulsification is a method of emulsifying a cloudy lens using ultrasound energy during cataract surgery and removing it from the inside of the eye by aspiration. All of the recent cataract surgeries are mostly performed by ultrasound emulsification except in some cases.

At the time of surgery, a 2.2mm to 2.75mm nodule is usually inserted, and the palate tip of the ultrasonic emulsifier handpiece is inserted into the eye. The puck tip consists of a central shaft and a sleeve surrounding the shaft. There is a space between the shaft and the sleeve. At the end of the sleeve, there is a discharge port, and the perfusion of the equilibrium salt solution injected from the outside is performed to maintain the forward part of the eye during the operation. The shaft vibrates rapidly to generate ultrasound energy and at the same time serves as a suction port to suck up the emulsified lens. Currently commonly used pallet tip sleeves have two circular outlets horizontally opposed to the end, through which a balanced salt solution is perfused. In the case of such a sleeve, the perfusion liquid flowing into the eye has a certain direction. In some cases, it acts as a force that interferes with the entrance of the lens fragment into the suction port of the shaft. In case of direct injection into the endothelial cells of the eye, Weighted side effects. In addition, a large amount of solution passes through a discharge port having a relatively small area, so that the inflow liquid flows at a high flow rate, and then forms a vortex after colliding with various structures inside the eye. This vortex also acts as a major force that interferes with the entry of the lens piece into the suction port of the shaft, thereby hindering efficient removal of the lens.

The present invention provides a perfusion sleeve for ultrasonic emulsification and aspiration for reducing directionality and flow velocity and vorticity of perfusion fluid flow.

In one embodiment of the present invention, the discharge portion may include a spiral hole formed along the circumferential direction of the distal end portion.

In one embodiment of the present invention, the discharge unit may further include a plurality of support means for connecting the spiral holes at a predetermined interval.

In one embodiment of the present invention, the plurality of support means may be arranged to be offset from each other with respect to the central axis direction.

In an embodiment of the present invention, the pitch of the helical holes may become larger toward the tip end.

In one embodiment of the present invention, the discharge portion may include a plurality of discharge holes formed on the outer surface of the distal portion so as to be spaced along the longitudinal direction of the distal portion.

In one embodiment of the present invention, the outer surface of the distal end may be formed with at least two discharge holes arranged in each of at least two straight lines crossing each other at the central axis and passing through the outer surface of the distal end.

In one embodiment of the present invention, the discharge holes may become larger toward the distal end.

Other aspects, features, and advantages will become apparent from the following drawings, claims, and detailed description of the invention.

The perfusion sleeve for ultrasonic emulsification and aspiration according to the present invention can minimize the specific directionality of the perfusion fluid by discharging the perfusion fluid through the discharge part formed at the distal end in all directions 360 degrees. Accordingly, the perfusion sleeve for ultrasonic emulsification and aspiration according to the present invention can reduce the vortex of the flow of the perfusion solution during surgery and minimize damage to the endothelial cells. In addition, the perfusion sleeve for ultrasonic emulsification and aspiration according to the present invention can increase the area through which the perfusion liquid is discharged, thereby reducing the flow rate while supplying a predetermined amount of perfusion liquid required for the lens during surgery.

1 is a perspective view schematically illustrating a perfusion sleeve for ultrasonic emulsification and aspiration according to an embodiment of the present invention.
2 is a perspective view schematically showing a perfusion sleeve for ultrasonic emulsification and aspiration according to another embodiment.
FIG. 3 is a cross-sectional view illustrating a state in which a packet tip for ultrasonic emulsification and aspiration is inserted into the sleeve of FIG. 1;
4 is a perspective view schematically showing a perfusion sleeve for ultrasonic emulsification and aspiration according to another embodiment of the present invention.
Figures 5 and 6 are cross-sectional and perspective views illustrating other embodiments of the sleeve of Figure 4;

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention and methods of achieving them will be apparent with reference to the embodiments described in detail below with reference to the drawings. However, the present invention is not limited to the embodiments described below, but may be implemented in various forms.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like or corresponding components throughout the drawings, and a duplicate description thereof will be omitted .

In the following embodiments, the terms first, second, and the like are used for the purpose of distinguishing one element from another element, not the limitative meaning.

In the following examples, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.

In the following embodiments, terms such as inclusive or possessive are intended to mean that a feature, or element, described in the specification is present, and does not preclude the possibility that one or more other features or elements may be added.

In the following embodiments, when a part of a film, an area, a component or the like is on or on another part, not only the case where the part is directly on the other part but also another film, area, And the like.

In the drawings, components may be exaggerated or reduced in size for convenience of explanation. For example, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of explanation, and thus the present invention is not necessarily limited to those shown in the drawings.

If certain embodiments are otherwise feasible, the particular process sequence may be performed differently from the sequence described. For example, two processes that are described in succession may be performed substantially concurrently, and may be performed in the reverse order of the order described.

In the following embodiments, when a film, an area, a component, or the like is referred to as being connected, not only the case where the film, the region, and the components are directly connected but also the case where other films, regions, And indirectly connected. For example, in the present specification, when a film, an area, a component, and the like are electrically connected, not only a case where a film, an area, a component, etc. are directly electrically connected but also another film, And indirectly connected electrically.

Hereinafter, a perfusion sleeve 100 for ultrasonic emulsion suction aspiration will be described with reference to the drawings.

FIG. 1 is a perspective view schematically showing a perfusion sleeve 100 for ultrasonic emulsification and aspiration according to an embodiment of the present invention. FIG. 2 is a perspective view schematically showing a perfusion sleeve 100 for an ultrasonic emulsification / to be. FIG. 3 is a cross-sectional view of the sleeve 100 of FIG. 1 in which a packet tip for ultrasonic emulsification and aspiration is inserted.

1 to 3, the perfusion sleeve 100 for ultrasonic emulsification and aspiration according to an embodiment of the present invention may include a main body 110, an enlarged section 120, and a discharge section 115.

Here, the ultrasonic emulsifying and suctioning needle connected to a handpiece (not shown) driven by ultrasonic waves may include a phaco tip 10 and a sleeve 100. The ultrasonic emulsion suction cap 10 includes a needle hub 13 which is engageable with an ultrasonic emulsion suction handpiece and a needle shaft 14 which is connected to the needle hub 13 and is provided with a guide hole S1 have. The ultrasonic emulsion suction cap 10 can suck and remove the crystalline body decomposed by ultrasonic energy through the guide hole S1.

The main body 110 of the sleeve 100 surrounds a portion of the shaft 14 of the needle for ultrasonic emulsification and aspiration and may have a distal end 111 and a distal end 113. A through hole 117 may be formed at one end of the distal end 111 so that a portion of the needle shaft 14 for ultrasonic emulsification and suction inserted into the distal end 113 may be exposed. At this time, a flow tube S2 is formed between the packet tip 10 and the sleeve 100, and a perfusion liquid supplied from a handpiece (not shown) can be supplied to the eye through the flow tube S2.

The enlarged section 120 may extend from the distal end 113 and surround the hub 13 of the needle for ultrasonic emulsification and aspiration. The enlarged section 120 may be seated in a handpiece (not shown) for ultrasonic emulsion suction for use during surgery. The enlarged section 120 has a diameter larger than the diameter of the main body 110 and connected to the main body 110 through the inclined portion 130 between the enlarged section 120 and the main body 110, (Not shown).

The discharge part 115 is formed on the outer surface of the distal end 111 of the body part 110 and extends in the 360 degree forward direction with respect to the central axis A1 passing through the body part 110 and the enlarged section 120, . In other words, the perfusion liquid provided in the flow tube S2 formed between the packet tip 10 and the sleeve 100 described above can be discharged through the discharge portion 115 to the eye outside the sleeve 100 during surgery.

The conventional sleeve generally discharges the perfusion liquid to the outside through two holes formed opposite to the distal end of the main body. In the case where the perfusion liquid is discharged through two holes, the perfusion liquid must be discharged in a certain direction by the direction of the force to be discharged forward through the flow tube S2 and the position where the holes are formed. The perfusion liquid having a certain directionality is reflected by the inner wall of the lens to form a vortex. This vortex affects the emulsified cataract tissue and prevents the cataract tissue from being inhaled directly by the needle shaft 14. In addition, a necessary amount of perfusion liquid must be supplied through the hole in the lens during surgery. If the lens is discharged to the outside through the two holes, the water pressure discharged to the outside may increase, and the endothelial cells may be damaged.

Hereinafter, the discharge unit 115 capable of discharging the perfusion liquid 360 degrees in all directions will be described in detail to solve the above-described problems.

1 and 2, the discharge portion 115 may include a spiral hole S formed along the circumferential direction of the distal end portion 111. In addition, The spiral holes S may be formed in the distal end portion 111 with a constant pitch. In addition, as shown in the figure, the spiral hole S may extend to a part of the front end portion 113. However, in the drawing, the helical hole S is somewhat exaggerated in order to explain the helical hole S, and the helical hole S may be formed corresponding to the region to be inserted into the lens. Since the helical hole S is formed along the circumferential direction of the distal end portion 111, the perfusion liquid can be discharged 360 degrees in all directions with respect to the central axis A1. Further, since the spiral holes are arranged so as to overlap with the longitudinal direction of the distal end portion 111, the area through which the perfusion liquid is discharged increases, and when the perfusion liquid at the same flow rate is discharged, the pressure or speed of the perfusion liquid can be reduced. In another embodiment, the pitch of the spiral holes S may become larger toward the tip end 113 side. Although not shown, the pressure or velocity of the perfusion liquid discharged toward the distal end portion 113 can be changed by increasing the pitch of the helical holes S toward the distal end portion 113. This change can effectively reduce vortices.

2, the discharge unit 115 may further include a plurality of support means 119 connecting the spiral holes S at predetermined intervals. The plurality of support means 119 may be arranged at regular intervals or at irregular intervals. At this time, the plurality of support means 119 are arranged so as to be offset from each other with respect to the direction of the center axis A1, thereby stably supporting the spiral hole S and allowing the perfusion liquid to be discharged 360 degrees in all directions .

FIG. 4 is a perspective view schematically showing a perfusion sleeve 200 for ultrasonic emulsion suction according to another embodiment of the present invention, and FIGS. 5 and 6 are a sectional view and a perspective view showing another embodiment of the sleeve of FIG.

4, the perfusion sleeve 200 for ultrasonic emulsification and aspiration according to another embodiment may include a main body 210, an enlarged section 220, and a discharge section 215. The sleeve 200 according to another embodiment of the present invention is the same as that of the first embodiment except for the shape of the discharging part 215, so that a duplicate description will be omitted.

The discharge unit 215 according to another embodiment may include a plurality of discharge holes H formed on the outer surface of the distal end portion 211 so as to be spaced along the longitudinal direction of the distal end portion 211. [ As shown in the figure, the plurality of discharge holes (H) may be arranged in a net shape along the longitudinal direction and the circumferential direction of the distal end portion (211). More specifically, at least two discharge holes H are formed on the outer surface of the distal end portion 211, which are arranged in each of at least two straight lines L1 and L2 passing through the outer surface of the distal end portion 211, . The plurality of discharge holes H include a plurality of hole groups M1, M2 and M3 arranged on the same circumference and the hole groups M1, M2 and M3 are arranged along the longitudinal direction of the distal end portion 211 . A plurality of discharge holes H are arranged in a net shape on the outer surface of the distal end portion 211 to discharge the perfusion liquid 360 degrees in the forward direction with respect to the central axis A1.

Referring to FIG. 5, the discharge holes H included in the discharge unit 215 may gradually increase in size toward the tip 213. In other words, the first hole group M1, the second hole group M2 and the third hole group M3 in which a plurality of discharge holes H are arranged on the same circumference are sequentially transferred from the distal end portion 211 to the tip end portion 213, the size of the discharge hole H belonging to the third hole group M3 may be larger than the discharge hole H belonging to the first hole group M1. Accordingly, the discharge unit 215 can change the pressure or the velocity of the perfusion liquid discharged toward the distal end 213, and vortex can be effectively reduced.

6, the discharge unit 215 of another embodiment may include a plurality of hole groups M1, M2, and M3 having a plurality of discharge holes H disposed on the same circumference, The discharge holes H belonging to each of the groups M1, M2 and M3 may be arranged to be offset from each other with respect to the longitudinal direction of the distal end portion 211. [ The discharging unit 215 of another embodiment can reduce the directionality of the perfusion liquid discharged through the discharge holes H arranged to be staggered from each other and effectively reduce the occurrence of vortex.

In the figure, only three hole groups out of the plurality of hole groups described above are shown, and the present invention is not limited thereto. The discharge portion 215 according to another embodiment of the present invention may include three or more hole groups in the distal portion 211. [ At this time, the size of the discharge hole H belonging to the hole group can be reduced as the number of the hole group disposed at the distal end portion 211 increases. However, since the number of the discharge holes H increases, the area through which the perfusion liquid is discharged can be increased. Thus, the flow velocity of the perfusion liquid discharged to the discharge portion 215 can be reduced.

As described above, the perfusion sleeve for ultrasonic emulsification and aspiration according to the present invention can minimize the specific directionality of the perfusion liquid by discharging the perfusion liquid through the discharge part formed at the distal end in all directions at 360 degrees. Accordingly, the perfusion sleeve for ultrasonic emulsification and aspiration according to the present invention can reduce the vortex of the flow of the perfusion solution during surgery and minimize damage to the endothelial cells. In addition, the perfusion sleeve for ultrasonic emulsification and aspiration according to the present invention can increase the area through which the perfusion liquid is discharged, thereby reducing the flow rate while supplying a predetermined amount of perfusion liquid required for the lens during surgery.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the exemplary embodiments, and that various changes and modifications may be made therein without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10: Pattership
13: Needle hub
14: Shaft
100: Sleeve
110:
111:
113:
115:
117: Through hole
119: a plurality of support means
120: Magnification section
130:

Claims

A main body portion surrounding a portion of the shaft of the needle for emulsification and suction of the ultrasonic wave and having a distal end and a distal end;
An enlarged section extending from the distal end portion and surrounding the hub of the needle for ultrasonic emulsification and aspiration; And
And a discharge part formed on an outer surface of the distal end of the main body part and discharging the perfusion liquid in all 360 degrees with respect to a central axis passing through the main body part and the enlarged section,
Wherein the discharge portion includes a spiral hole formed along the circumferential direction of the distal end portion.

delete

The method according to claim 1,
Wherein the discharge portion further comprises a plurality of support means for connecting the spiral holes at a predetermined interval.

The method of claim 3,
Wherein the plurality of support means are disposed to be offset from each other with respect to the central axis direction.

The method according to claim 1,
And the pitch of the helical holes increases toward the distal end portion.

The method according to claim 1,
Wherein the discharge portion includes a plurality of discharge holes formed on an outer surface of the distal portion so as to be spaced along the longitudinal direction of the distal portion.

The method according to claim 1,
At least two discharge holes are formed on the outer surface of the distal end portion, the discharge holes being arranged at each of at least two straight lines crossing each other at the central axis and passing through the outer surface of the distal end portion.

8. The method of claim 7,
Wherein the discharge holes are larger in size toward the distal end portion.

The method according to claim 1,
Wherein the helical hole is formed so as to partially overlap the longitudinal direction of the distal end portion.

The perfusion sleeve for ultrasonic emulsification aspiration as claimed in claim 1, wherein the discharge portion comprises a plurality of discharge holes arranged in a net shape on an outer surface of the distal end portion.

The method according to claim 1,
Wherein the discharge portion includes a plurality of hole groups disposed on the outer surface of the distal end portion and having a plurality of discharge holes arranged on the same circumference,
And the discharge holes included in each of the plurality of hole groups are arranged to be offset from each other with respect to the longitudinal direction of the distal end portion.