CN214909118U

CN214909118U - Direction-changeable cataract nucleus-splitting hook

Info

Publication number: CN214909118U
Application number: CN202120431993.3U
Authority: CN
Inventors: 梁仁隆; 谭仁静; 古爱平
Original assignee: Guangdong No 2 Peoples Hospital
Current assignee: Guangdong No 2 Peoples Hospital
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-11-30
Anticipated expiration: 2031-02-26

Abstract

The application provides a changeable cataract nucleus-splitting hook of direction relates to medical apparatus technical field. The cataract nucleus-splitting hook with variable direction comprises: casing, split nuclear pole, driving medium and drive division. The nucleus splitting rod is in transmission connection with the driving part through a transmission piece, and the transmission piece is located inside the casing. The shell comprises a first opening and a second opening, the nucleus splitting rod penetrates through the first opening, and the driving portion penetrates through the second opening. When the force is applied to the driving part, the driving part can change the relative position between the nucleus splitting rod and the casing through the transmission piece. The cataract nucleus splitting hook with the variable direction drives the transmission piece through the driving part, so that the position of the nucleus splitting rod at the first opening is changed, the angle between the nucleus splitting rod and the casing is changed, and the requirement of nucleus splitting is met. The whole process does not need to adjust the lens nucleus block, and the existing problems are effectively solved. And simple structure, easy to use, it is faster to learn, does benefit to practical application.

Description

Direction-changeable cataract nucleus-splitting hook

Technical Field

The application relates to the technical field of medical instruments, in particular to a direction-variable cataract nucleus-cleaving hook.

Background

Phacoemulsification is an improved extracapsular cataract extraction technique in which the cataract is emulsified by ultrasonic vibration through an incision having a chord length of about 3mm or less and the emulsified cataract tissue is aspirated from the anterior chamber by an irrigation aspiration system to achieve the purpose of cataract extraction. Because of short surgical incision, small damage to cornea and quick recovery of postoperative vision, the traditional Chinese medicine composition is a mainstream surgical mode for treating cataract in domestic large and medium-sized ophthalmology.

In the operation, after an operation incision is made, viscoelastic is injected to fully fill the anterior chamber of the eye, the anterior capsule is cut, the nucleus is pre-split (hard lens nucleus is frequently carried out), water separation and water stratification are carried out, ultrasonic emulsification of the lens nucleus is carried out by an ultrasonic emulsification needle head, cortex suction and rear capsule polishing are carried out by filling a suction probe, finally, viscoelastic is removed, the incision is closed, and the ultrasonic emulsification cataract suction operation is completed.

The nucleus pre-cleavage means that after the anterior capsule membrane is cut, the lens nucleus is cleaved in advance by using capsulorhexis forceps (or a self-made capsulotomy needle) and a cataract nucleus-cleaving hook, and then the ultrasonic emulsification operation is performed, so that the use of ultrasonic energy in the operation is reduced.

In the pre-nucleus-splitting operation, firstly, a right hand holds a capsulorhexis forceps (or a self-made capsulotomy needle) to enter the anterior chamber of the eye from an upper main incision and reach the periphery of the nucleus above the crystalline lens nucleus, meanwhile, a left hand holds a cataract nucleus-splitting hook to enter the anterior chamber of the eye from a side incision (upper left) and reach the equator part below the crystalline lens nucleus, and two hands simultaneously exert force to the center of the nucleus to split the lower part of the crystalline lens nucleus by opposite impact force. Then, the capsulorhexis forceps reach the periphery of the right nucleus of the lens nucleus, the nucleus splitting hook reaches the equator part of the left side of the lens nucleus, and the two hands exert force to the center of the nucleus simultaneously to split the left side of the lens nucleus by opposite impact force. Similarly, the right side of the lens nucleus can be cleaved. Because the capsulorhexis forceps (or the self-made capsulotomy needle) and the nucleus splitting hook enter the anterior chamber of the eye from the upper part or the left upper part to perform the nucleus pre-splitting operation, the upper part of the lens nucleus becomes a blind area. It is necessary to rotate the nucleus piece in the proper direction (e.g., down, left or right) to split the original nucleus with the same opposing force and finally to split the nucleus into 4 pieces of almost the same size.

The scleroma is often accompanied by problems of fragility of the zonules of the lens, dislocation of the lens, etc. Rotation of the lens nucleus mass can exacerbate the above situation and should be avoided. And the upper part of the lens nucleus can not be pre-split due to the fact that the lens nucleus block can not be rotated, the pre-split nucleus is insufficient (incomplete), more ultrasonic energy is needed to be used during ultrasonic emulsification, and then the risk of damaging corneal endothelium and an operation incision is increased, and even postoperative vision is influenced. There is currently no effective solution for this situation.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a changeable cataract nucleus splitting hook of direction, it can improve the problem that present nucleus splitting hook can not fully split the nucleus.

The embodiment of the application is realized as follows:

embodiments of the present application provide a changeable direction cataract nucleus cleaving hook, including: the core splitting device comprises a shell, a core splitting rod, a transmission piece and a driving part;

the nucleus splitting rod is in transmission connection with the driving part through the transmission piece, and the transmission piece is positioned inside the casing;

the shell comprises a first opening and a second opening, the nucleus splitting rod penetrates through the first opening, and the driving part penetrates through the second opening;

when force is applied to the driving part, the driving part can change the relative position between the core splitting rod and the casing through the transmission piece.

By changing the relative position between the nucleus splitting rod and the shell, the nucleus splitting rod can be adjusted to a position suitable for nucleus splitting, nucleus splitting operation can be carried out on the nucleus splitting rod without rotating the lens nucleus block, and damage is avoided.

In addition, the cataract nucleus splitting hook with the changeable direction provided by the embodiment of the application can also have the following additional technical characteristics:

in an alternative embodiment of the present application, the transmission member is a connecting rod, the driving portion is a push rod, a portion of the push rod passes through the second opening and is hinged to one end of the connecting rod, and a portion of the nucleus splitting rod passes through the first opening and is hinged to the other end of the connecting rod.

The matching of the push rod and the connecting rod is simple and reliable, the angle of the nucleus splitting rod can be directly adjusted, the simple operation is beneficial to the operator to adjust according to the requirement, and the using effect is good.

In an optional embodiment of the present application, the first opening is located at the front end of the casing, the second opening is located in the middle of the casing, the push rod is pulled backwards, the hook head of the core splitting rod rotates backwards, the push rod is pushed forwards, and the hook head of the core splitting rod rotates forwards.

The arrangement position of the second opening enables the push rod to be located in the finger control range of an operator, the push rod is convenient to pull or push, the movement direction of the nucleus splitting rod is enabled to be consistent with the movement direction of the push rod, the use habit is met, and the operation is facilitated.

In an optional embodiment of the present application, an included angle is formed between the core splitting bar and the connecting bar, and when the push bar is pushed forward, the included angle ranges from 130 ° to 150 °; when the push rod is pulled backwards, the included angle ranges from 30 degrees to 50 degrees.

Reasonable included angle range control can not only meet the adjustment requirement, but also avoid the injury to the eyes due to excessive adjustment.

In an alternative embodiment of the present application, the opening direction of the first opening is the same as the opening direction of the second opening.

In an alternative embodiment of the application, the casing has a link passage therein, and the link is in the link passage, and the link has two degrees of freedom in the front and rear directions.

Through the degree of freedom of the control connecting rod, the connecting rod can not move in other directions, and therefore the nucleus splitting rod can be prevented from shaking.

In an alternative embodiment of the present application, the outer surface of the driving portion is provided with anti-slip threads.

In an optional embodiment of the present application, the casing is divided into a handle section and an outer rod section, the driving portion is disposed on the handle section, the core splitting rod is disposed on the outer rod section, one end of the handle section is connected with one end of the outer rod section, and the transmission member is accommodated by the handle section and the outer rod section at the same time.

In an alternative embodiment of the present application, the outer shaft segment has a diameter smaller than the diameter of the handle segment.

The diameter of the outer rod section is small, so that the sight of an operator can be prevented from being blocked.

In an optional embodiment of the present application, the direction-variable cataract nucleus-cleaving hook further includes a flexible protective cover, the flexible protective cover is connected to the nucleus-cleaving rod and the casing, and the flexible protective cover covers and blocks the first opening.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic view of a variably oriented cataract nucleus cleaving hook provided in an embodiment of the present application in a first state;

FIG. 2 is a schematic view of the first opening of FIG. 1;

FIG. 3 is a schematic view of the second opening of FIG. 1;

FIG. 4 is a schematic view of a variably oriented nuclear cleaving hook of a cataract provided in an embodiment of the present application in a second configuration;

FIG. 5 is a schematic view of the first opening of FIG. 4;

fig. 6 is a schematic view of the second opening in fig. 4.

Icon: 100-direction changeable cataract nucleus-splitting hook; 10-a casing; 11-a first opening; 12-a second opening; 13-a handle section; 15-outer pole section; 20-splitting a nucleus rod; 21-hook head; 30-a transmission member; 40-a drive section.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the product conventionally places when used, and are only used for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Examples

Referring to fig. 1 and 4, an embodiment of the present application provides a cataract nucleus-cleaving hook 100 with a variable direction, which includes: the shell 10, the core splitting rod 20, the transmission piece 30 and the driving part 40;

the core-splitting bar 20 is drivingly connected to the drive portion 40 via a drive member 30, the drive member 30 being located within the shell 10.

Referring to fig. 2, 3, 5 and 6, the casing 10 includes a first opening 11 and a second opening 12, the core splitting bar 20 is disposed through the first opening 11, and the driving portion 40 is disposed through the second opening 12;

when a force is applied to the driving part 40, the driving part 40 can change the relative position between the core splitting bar 20 and the shell 10 through the transmission member 30.

Wherein, fig. 1 shows the relative position between the nucleus cleaving bar 20 and the shell 10 when the direction-changeable cataract nucleus cleaving hook 100 is in the first state, and at this time, referring to fig. 2 and fig. 3, the driving part 40 is in the front position of the second opening 12, and the nucleus cleaving bar 20 is in the front position of the first opening 11; fig. 4 shows the relative position of the nucleus cleaving bar 20 and the housing 10 when the orientation changeable cataract nucleus cleaving hook 100 is in the second state, wherein, referring to fig. 5 and 6, the driving portion 40 is in the rear position of the second opening 12 and the nucleus cleaving bar 20 is in the rear position of the first opening 11. Generally, the forward direction is forward and the backward direction is reverse.

Wherein, the surface of drive portion 40 is equipped with anti-skidding line, avoids skidding and injure patient's eye in the operation process.

In brief, by changing the relative position between the nucleus splitting rod 20 and the shell 10, the nucleus splitting rod 20 can be adjusted to a position suitable for nucleus splitting, and nucleus splitting operation can be performed on the nucleus splitting rod without rotating the nucleus lens block, so that damage is avoided.

Specifically, in the present embodiment, the transmission member 30 is a connecting rod, the driving portion 40 is a push rod, a portion of the push rod passes through the second opening 12 and is hinged to one end of the connecting rod, and a portion of the core splitting rod 20 passes through the first opening 11 and is hinged to the other end of the connecting rod. The matching of the push rod and the connecting rod is simple and reliable, the angle of the nucleus splitting rod 20 can be directly adjusted, the simple operation is beneficial to the operator to adjust according to the requirement, and the using effect is good.

Further, the first opening 11 of the present embodiment is located at the front end of the jacket 10, the second opening 12 is located at the middle portion of the jacket 10, and the opening direction of the first opening 11 is the same as the opening direction of the second opening 12. The push rod is pulled backwards, the hook head 21 of the nucleus splitting rod 20 rotates backwards, the push rod is pushed forwards, and the hook head 21 of the nucleus splitting rod 20 rotates forwards.

The second opening 12 is disposed in a position such that the push rod is within the finger control range of an operator, so as to facilitate pulling or pushing the push rod, and the movement direction of the nucleus splitting rod 20 is consistent with the movement direction of the push rod, thereby conforming to the use habit and facilitating the operation. And the grooves are arranged in the same direction, so that the production and the assembly are convenient. Of course, the cataract nucleus splitting hook 100 with different opening directions and variable directions can be customized according to the operation habit of an operator, so as to better perform nucleus splitting operation.

Optionally, the present embodiment further comprises a flexible shield, which is connected to both the core cleaving rod 20 and the sheath 10, and which covers and blocks the first opening 11. That is, the outer edge of the flexible boot is connected to the housing 10 and the inner edge is connected to the split core bar 20, but does not interfere with the movement of the split core bar 20. Thus, the problem of operation safety caused by the internal communication between the anterior chamber of the eye and the direction-variable cataract nucleus-splitting hook in the operation can be avoided. Such as risk of infection causing surgery, the introduction of intraocular material into the nucleus cleaving hook affecting the driving member, etc.

Specifically, an included angle is formed between the nucleus splitting rod 20 and the connecting rod, and when the push rod is pushed forwards, the included angle ranges from 130 degrees to 150 degrees; when the push rod is pulled backwards, the included angle ranges from 30 degrees to 50 degrees. Reasonable included angle range control can not only meet the adjustment requirement, but also avoid the injury to the eyes due to excessive adjustment.

The casing 10 of this embodiment has a link passage therein, and the link is located in the link passage and has two degrees of freedom in the front and rear directions. By controlling the degree of freedom of the connecting rod, the connecting rod cannot move in other directions, so that the nucleus splitting rod 20 can be prevented from shaking.

Further, the casing 10 is divided into a handle section 13 and an outer rod section 15, the driving part 40 is arranged on the handle section 13, the core splitting rod 20 is arranged on the outer rod section 15, one end of the handle section 13 is connected with one end of the outer rod section 15, and the transmission piece 30 is simultaneously accommodated by the handle section 13 and the outer rod section 15. Wherein the diameter of the outer shaft section 15 is smaller than the diameter of the handle section 13. The outer pole section 15 has a small diameter to avoid obscuring the operator's view.

During adjustment, the push rod is pushed forwards, the middle position of the push rod abuts against the handle section 13, one end of the push rod drives one end of the connecting rod to slide backwards in the connecting rod channel, so that one end of the nucleus splitting rod 20 is pulled to slide backwards, one part of the nucleus splitting rod 20 is abutted against by the outer rod section 15, the hook head 21 of the nucleus splitting rod 20 rotates relative to the outer rod section 15, and the included angle between the whole nucleus splitting rod 20 and the connecting rod is changed. Similarly, when the push rod is pulled backwards, the nucleus splitting rod 20 can be adjusted.

It will be appreciated that the present application simply employs a connecting rod as the drive member 30, with the corresponding channel matching the profile of the connecting rod. When the transmission member 30 is in other shapes or a combination of different components, the corresponding channel needs to be adjusted correspondingly to reduce the shaking of the transmission member 30 in the up-down, left-right directions.

Of course, the width direction of the first opening 11 also needs to limit the nucleus splitting bar 20, so as to ensure that the nucleus splitting bar 20 only rotates and does not shake left and right.

The principle of the embodiment is as follows:

when in use, the nucleus cleaving rod 20 is firstly kept in the positive direction, namely the push rod is pushed forwards, and the push rod is pressed to be fixed, at the moment, the included angle between the nucleus cleaving rod 20 and the connecting rod is 130-150 degrees, and the pre-cleaving of the lower part, the left side and the right side of the lens nucleus can be conventionally carried out. Then, the push rod is pulled backwards, the nucleus splitting rod 20 moves backwards along with the push rod (because the direction-variable cataract nucleus splitting hook 100 adjusts the position of the hook head 21 in the anterior chamber of the eye, the hook head 21 is prevented from touching the peripheral tissues such as corneal endothelium and the like), and the included angle between the nucleus splitting rod 20 and the connecting rod is 30-50 degrees; the cataract nucleus splitting hook 100 with the changeable rotating direction enables the hook head 21 to be positioned at the equator part above the crystalline lens, the capsulorhexis forceps reach the periphery of the nucleus below the crystalline lens nucleus, and the two hands exert force to the center of the nucleus simultaneously to split the upper part of the crystalline lens nucleus by opposite impact force, so that nucleus pre-splitting is completed.

It can be seen that the whole process avoids the rotation of the lens nucleus block, avoids the damage of lens zonules and even the dislocation of the lens and other problems, and does not need to use more ultrasonic energy during the ultrasonic emulsification, thereby reducing the risk of damage to the corneal endothelium and the surgical incision.

In summary, the direction-changeable cataract nucleus-splitting hook 100 of the present application drives the transmission member 30 through the driving part 40, so that the position of the nucleus-splitting rod 20 at the first opening 11 is changed, and the angle between the nucleus-splitting rod 20 and the casing 10 is changed to meet the requirement of nucleus-splitting. The whole process does not need to adjust the lens nucleus block, and the existing problems are effectively solved. And simple structure, easy to use, it is faster to learn, does benefit to practical application.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A variably oriented nucleus-cleaving hook for cataracts, comprising: the core splitting device comprises a shell, a core splitting rod, a transmission piece and a driving part;

2. The variably oriented cataract nucleus-cleaving hook of claim 1, wherein the transmission member is a link, the driving portion is a push rod, a portion of the push rod passes through the second opening and is hinged to one end of the link, and a portion of the nucleus-cleaving rod passes through the first opening and is hinged to the other end of the link.

3. The variably oriented cataract nucleus-cleaving hook of claim 2, wherein the first opening is at a front end of the housing and the second opening is at a middle portion of the housing, and wherein pulling the push rod backward causes the hook head of the nucleus-cleaving rod to rotate backward, pushing the push rod forward, and causing the hook head of the nucleus-cleaving rod to rotate forward.

4. The variably oriented cataract nucleus-splitting hook of claim 3, wherein an included angle is formed between the nucleus-splitting rod and the connecting rod, and when the push rod is pushed forward, the included angle ranges from 130 degrees to 150 degrees; when the push rod is pulled backwards, the included angle ranges from 30 degrees to 50 degrees.

5. The variably oriented cataract nucleus cleaving hook of any of claims 1-3, wherein the first opening is oriented in the same direction as the second opening.

6. The variable orientation cataract nucleus cleaving hook of claim 2, wherein the housing has a link channel therein, the link being disposed in the link channel, the link having two degrees of freedom in an anterior-posterior direction.

7. The variably oriented cataract nucleus-cleaving hook of claim 1, wherein an outer surface of the driving portion is provided with anti-slip threads.

8. The variably oriented split nucleus hook of claim 1, wherein the housing comprises a handle segment and an outer rod segment, the driving portion is disposed on the handle segment, the split nucleus rod is disposed on the outer rod segment, one end of the handle segment is connected to one end of the outer rod segment, and the driving member is received by both the handle segment and the outer rod segment.

9. The variable orientation cataract nucleus-splitting hook of claim 8, wherein the outer shaft segment has a diameter smaller than a diameter of the handle segment.

10. The variable orientation cataract nucleus splitting hook of claim 1, further comprising a flexible shield, wherein the flexible shield is connected to the nucleus splitting rod and the housing, and wherein the flexible shield covers and blocks the first opening.