CN214967598U - Position adjusting hook - Google Patents

Abstract

The application relates to the technical field of medical instruments, in particular to a positioning hook. The positioning hook includes: a hook handle and a handle. One end of the hook handle is connected with the handle and can be enclosed into a sealed cavity with the handle, the other end of the hook handle is a hook head, the hook head is provided with a film structure, and the handle is provided with a pressing part. The hook handle has a contracting state and a swelling state, and the film structure does not interfere with the hook head in the contracting state; when the pressing part is pressed, the film structure is expanded, and the hook handle is switched from the contraction state to the expansion state. The positioning hook is matched with the handle through the hook handle to form a sealing cavity, the pressing part is matched with the thin film structure, the intraocular lens loop can be screwed into the designated position and pushed away from the intraocular lens loop, the intraocular lens loop is unfolded after reaching the designated position, the intraocular lens loop is prevented from being taken out when the positioning hook is withdrawn, and the patient is prevented from being injured. The operation is simple, the learning and use can be realized quickly, the learning curve is low, and the practicability is high.

Description

Position adjusting hook

Technical Field

The application relates to the technical field of medical instruments, in particular to a positioning hook.

Background

Intraocular lenses are currently the most effective method for refractive correction in aphakic eyes, replacing the original lens optically and anatomically, and allowing rapid recovery of vision after implantation. The posterior chamber type artificial lens is usually implanted clinically, and has the characteristics of in-situ implantation and less complication.

In the operation, injecting viscoelastic agent into the anterior chamber of the eye, enabling a syringe with an intraocular lens to enter the anterior chamber through an upper tunnel incision, sending the front loop and the optical part of the intraocular lens into a specified position (in the capsular bag/behind the iris), pushing out the syringe, clockwise screwing the rear loop of the intraocular lens into the specified position (in the capsular bag/behind the iris) by a positioning hook, adjusting the position of the intraocular lens to enable the intraocular lens to be centered and fixed, removing the viscoelastic agent, closing the incision and completing the intraocular lens implantation operation.

The T-shaped positioning hook is pressed against the joint of the artificial lens loop and the optical part to rotate and position through the included angle formed by the front protruding part and the lower protruding part of the hook head. Because the artificial lens has the functions of pressing the artificial lens backwards and downwards and preventing the artificial lens from slipping, the artificial lens is convenient to implant, and the artificial lens is a mainstream surgical instrument for the current artificial lens implantation.

Sometimes, the anterior loop and the optic of the intraocular lens fail to be delivered to a designated location (capsular bag/posterior of iris) due to the small pupil (i.e., the foramen at the center of the iris) of the patient, lack of fit during surgery, small opening of the anterior capsule, non-continuous annular capsulorhexis, rupture of the posterior capsule, etc., when all of the anterior loop, optic, and posterior loop are in front of the designated location (typically, anterior chamber). Since the anterior chamber is smaller than the designated location (capsular bag/posterior iris), the posterior chamber intraocular lens located in the anterior chamber is in compression. When the hook head of the T-shaped positioning hook props against the joint of the intraocular lens loop and the optical part and is screwed into a specified position (at the moment, the intraocular lens loop is also in a serious compression state), when the positioning hook is withdrawn, the joint of the intraocular lens loop and the optical part is often withdrawn, so that the intraocular lens loop is difficult to screw in, often needs to try many times, the surgical risk of bleeding and accidental damage of surrounding tissues is greatly increased, and the discomfort of a patient is gradually enhanced.

There is currently no simple and effective solution.

SUMMERY OF THE UTILITY MODEL

The application aims to provide a positioning hook which can solve the problem that the artificial lens loop is not smoothly installed to cause damage.

The embodiment of the application is realized as follows:

an embodiment of the present application provides a positioning hook, includes: a hook handle and a handle;

one end of the hook handle is connected with the handle and can form a sealed cavity together with the handle, the other end of the hook handle is a hook head, the hook head is provided with a thin film structure, and the handle is provided with a pressing part;

the hook handle has a contracting state and a swelling state, and the film structure does not interfere with the hook head in the contracting state; and when the pressing part is pressed, the film structure is expanded, and the hook handle is switched from the bunching state to the expanding state.

The shape of the film structure can be changed by pressing the pressing part, so that the whole state of the hook handle is changed from being contracted to being expanded, then the position of the joint of the intraocular lens loop and the optical part can be adjusted in a small range, the position of the intraocular lens loop is changed along with the change of the position of the intraocular lens loop, and finally the intraocular lens loop is installed at a specified position (in a capsular bag/behind an iris) and then is unfolded without repeatedly moving the positioning hook integrally, and the problem of damage is solved.

In addition, the positioning hook provided by the embodiment of the application can also have the following additional technical characteristics:

in an alternative embodiment of the present application, the hook head includes a first protrusion and a second protrusion, an included angle is formed between the first protrusion and the second protrusion, and the film structure is disposed at a position where the first protrusion and the second protrusion are sandwiched.

The first protruding part and the second protruding part can be used for adjusting the joint of the artificial lens loop and the optical part, so that the joint is screwed into a specified position, and the thin film structure can push the joint of the artificial lens loop and the optical part away from the hook head at the position between the two protruding parts.

In an alternative embodiment of the present application, a junction of the first and second projecting portions, a distal end of the first projecting portion, and a distal end of the second projecting portion form a triangular region, and in the bulged state, the bulged portion of the film structure projects from the triangular region.

In an alternative embodiment of the present application, the included angle between the first projection and the second projection is α, 80 ° ≦ α ≦ 100 °.

In an alternative embodiment of the present application, the first protrusion has a length L1, 0.3mm L1 mm 1 mm.

In an alternative embodiment of the present application, the second protrusion has a length L2, 0.3mm L2 mm 1 mm.

In an alternative embodiment of the present application, the shank is removably connected to the handle, and the chamber in the shank is in communication with the chamber in the handle.

The hook handle and the handle are detachably connected, so that the hook handle and the handle can be conveniently cleaned and disinfected, and can be conveniently replaced when one of the hook handle and the handle is damaged, thereby reducing waste and ensuring the cleaning effect.

In an alternative embodiment of the application, the shank comprises a first section and a second section, one end of the first section forming the hook head, the other end of the first section being connected to one end of the second section, the other end of the second section being connected to the handle, the first section and the second section having an angle β between them, 130 ° β 150 °.

In an alternative embodiment of the present application, the first and second pole segments each have an outer diameter no greater than 2 mm.

In an optional embodiment of the application, the handle is cylindrical, and the outer wall of the handle is provided with anti-skid grains.

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 positioning hook provided in an embodiment of the present application;

FIG. 2 is a schematic view of the positioning hook of FIG. 1 with the shank in a contracted state;

FIG. 3 is a schematic view of the positioning hook of FIG. 1 with the shank of the hook in a raised condition;

FIG. 4 is a schematic view of the hook head from a perspective of direction A;

FIG. 5 is a schematic view of the hook head from a perspective of direction B;

fig. 6 is a partially enlarged view of a portion C of fig. 2.

Icon: 10-a hook handle; 11-hook head; 112-a first projection; 114-a second projection; 13-a first pole segment; 15-a second pole segment; 30-a handle; 31-a pressing part; 33-anti-skid lines; 50-thin film structure.

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 "front side", "back side", and the like indicate orientations or positional relationships based on 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 being referred to 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, an embodiment of the present application provides a positioning hook, including: a hook shank 10 and a handle 30;

one end of the hook handle 10 is connected with the handle 30 and can form a sealed chamber with the handle 30, the other end of the hook handle 10 is a hook head 11, the hook head 11 is provided with a thin film structure 50 (shown in fig. 2 and 3), and the handle 30 is provided with a pressing part 31;

the hook shank 10 has a bunched state in which the film structure 50 does not interfere with the hook head 11 and a bulged state; when the pressing portion 31 is pressed, the film structure 50 is swollen, and the hook handle 10 is switched from the bound state to the swollen state.

The handle 30 is cylindrical, and the outer wall of the handle 30 is provided with anti-slip threads 33, so that the handle is convenient to hold and operate and is prevented from slipping. Note that, for the convenience of viewing the structure, only the antiskid line 33 is shown in fig. 1, and other figures are not shown but do not necessarily indicate that this is not necessary.

In brief, by pressing the pressing portion 31, the shape of the film structure 50 can be changed, so that the whole state of the hook handle 10 is changed from the closed state to the expanded state, then the position of the joint of the intraocular lens loop and the optical portion can be adjusted within a small range, the position of the intraocular lens loop changes accordingly, finally the intraocular lens loop is unfolded after being installed at a specified position (capsular bag/behind iris), and the problem of injury is solved without repeatedly moving the positioning hook as a whole.

Specifically, referring to fig. 2, fig. 4 and fig. 5, the hook head 11 includes a first protrusion 112 and a second protrusion 114, an included angle is formed between the first protrusion 112 and the second protrusion 114, and the film structure 50 is disposed at a position where the first protrusion 112 and the second protrusion 114 are sandwiched. The first and second projections 112, 114 can be used to adjust the junction of the IOL with the optic so that it is screwed into place, and the membrane structure 50 can push the junction of the IOL with the optic away from the hook 11 at a location between the two projections.

As can be seen from fig. 6, a triangular region H is formed at the junction of the first protrusion 112 and the second protrusion 114, the end of the first protrusion 112, and the end of the second protrusion 114, and in combination with fig. 3, in the swelling state, the swelling portion of the film structure 50 protrudes from the triangular region H.

In the embodiment, the included angle between the first protrusion 112 and the second protrusion 114 is α, and α is greater than or equal to 80 ° and less than or equal to 100 °. The length of the first convex part 112 is L1, L1 is more than or equal to 0.3mm and less than or equal to 1 mm. The length of the second convex part 114 is L2, L2 is more than or equal to 0.3mm and less than or equal to 1 mm. The size of first protrusion 112 and second protrusion 114 can reduce the influence on the eye and prevent injury, and the included angle design of the first protrusion and second protrusion facilitates the rotation of the junction of the intraocular lens loop and the optical portion to adjust to a specified position. And prevent damage to the eyes during this process. Meanwhile, the film structure 50 can be guaranteed to be normally bulged, and the two bulges are prevented from blocking the extension of the film structure 50.

Alternatively, in addition to the preferred angle and size settings described above, in other embodiments, larger or smaller angles may be designed and sizes may be designed to be smaller or larger to meet specific surgical needs. For example, when the eye condition of a patient is special and the surgery can be completed better by a special angle and size, the corresponding positioning hook can be customized.

Optionally, the hook shaft 10 of this embodiment is removably connected to the handle 30, and the chamber in the hook shaft 10 is in communication with the chamber in the handle 30. The hook handle 10 and the handle 30 are detachably connected, so that the hook handle 10 and the handle 30 can be cleaned and disinfected conveniently, and can be replaced conveniently when one of the hook handle and the handle is damaged, waste is reduced, and the cleaning effect is guaranteed.

In the embodiment, the hook handle 10 comprises a first rod section 13 and a second rod section 15, one end of the first rod section 13 forms the hook head 11, the other end of the first rod section 13 is connected with one end of the second rod section 15, the other end of the second rod section 15 is connected with the handle 30, and an included angle β is formed between the first rod section 13 and the second rod section 15, wherein β is not less than 130 degrees and not more than 150 degrees.

Further, the first and second pole segments 13, 15 do not have an outside diameter greater than 2 mm.

The position of adjustment gib head 11 when the contained angle design of first pole section 13 and second pole section 15 is conveniently operated avoids straight structure to shelter from the sight, and the design of its external diameter is the size of the control gib head 11 of being convenient for on the one hand, and on the other hand also can reduce the blockking to the art person sight to a certain extent, can also reduce the quality to a certain extent, makes things convenient for the art person to perform the operation.

The principle of the embodiment is as follows:

the hook handle 10 and the handle 30 are both hollow tubular structures, and the hook handle 10 and the handle 30 can be assembled when in use, and it is noted that the film structure 50 needs to be kept in a state of being contracted before assembly, the pressing part 31 is pressed after the assembly is completed, whether the film structure 50 is swelled or not is observed, and if the film structure is swelled, the airtightness between the hook handle 10 and the handle 30 is good, and the hook handle can be used normally. This is because the hook handle 10 and the handle 30 are communicated with each other, and the pressing portion 31 presses the air inside, so that the air is pressed to the position of the film structure 50, and the film structure 50 is easily deformed by a force, so that the film structure can be pushed by the air and is swelled toward the outside.

It is understood that, taking the perspective shown in fig. 2 as an example, the position of the pressing portion 31 may be arranged on the front surface of the handle 30, or may be arranged on the back surface of the handle 30. When the pressing part 31 is on the front side, the dominant hand is convenient for a right-handed operator to use, and when the pressing part 31 is on the back side, the dominant hand is convenient for a left-handed operator to use. The user can select the positioning hook convenient to use according to the self condition.

When the intraocular lens is used in an operation, the first protruding part 112 and the second protruding part 114 abut against the joint of the intraocular lens loop and the optical part together, after an operator screws the joint to a designated position, the thumb presses the pressing part 31 to swell the thin film structure 50, and when the thin film structure 50 swells, the joint of the intraocular lens loop and the optical part can be pushed away and separated from the first protruding part 112 and the second protruding part 114.

Because the membrane structure 50 is pushed by air, the action is relatively gentle, and the membrane structure 50 has certain elasticity, the patient can be further prevented from being injured.

The compressed state of the IOL is then rapidly deployed at the desired location to complete the procedure.

After the positioning hook is separated from the connecting part (the intraocular lens loop and the optical part), the intraocular lens loop reaches a designated position (in the capsular bag/behind the iris) and then is unfolded, so when the positioning hook is withdrawn, the intraocular lens loop is not influenced, repeated screwing in is not needed, surrounding tissues are prevented from being injured, risks are reduced, and discomfort of a patient is reduced.

Through practice, the positioning hook can simplify the screwing-in of the intraocular lens loop and the optical part and the reaching of the intraocular designated position, can not withdraw along with the withdrawal of the positioning hook, and is particularly suitable for the difficult surgical conditions of small pupils (namely the round hole in the center of the iris), unmatched surgical operation, small opening of the anterior capsule, discontinuous annular capsulorhexis, rupture of the posterior capsule membrane and the like.

To sum up, the positioning hook of this application encloses into sealed cavity through hook handle 10 and handle 30 cooperation to pressing under 31 and the cooperation of film structure 50 of portion, can with intraocular lens tong income assigned position and pushing away from intraocular lens tong, taking out intraocular lens tong when avoiding withdrawing out the positioning hook, prevent that the patient is injured. The operation is simple, the learning and use can be realized quickly, the learning curve is low, and the practicability is high.

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 (10)

1. A positioning hook, comprising: a hook handle and a handle;

one end of the hook handle is connected with the handle and can form a sealed cavity together with the handle, the other end of the hook handle is a hook head, the hook head is provided with a thin film structure, and the handle is provided with a pressing part;

the hook handle has a contracting state and a swelling state, and the film structure does not interfere with the hook head in the contracting state; and when the pressing part is pressed, the film structure is expanded, and the hook handle is switched from the bunching state to the expanding state.

2. The positioning hook of claim 1, wherein said hook head includes a first protrusion and a second protrusion, said first protrusion and said second protrusion having an included angle therebetween, said film structure being disposed at a location where said first protrusion and said second protrusion are sandwiched.

3. The positioning hook of claim 2, wherein the junction of the first projection and the second projection, the distal end of the first projection, and the distal end of the second projection form a triangular region from which the raised portion of the film structure extends in the raised state.

4. The positioning hook according to claim 2 or 3, wherein the angle between the first and second projections is α, 80 ° ≦ α ≦ 100 °.

5. The positioning hook of claim 4, wherein the first protrusion has a length of L1, 0.3mm L1 mm 1 mm.

6. The positioning hook of claim 4, wherein the second protrusion has a length of L2, 0.3mm L2 mm 1 mm.

7. The positioning hook of claim 1, wherein said shank is removably connected to said handle, and wherein a chamber in said shank is in communication with a chamber in said handle.

8. The positioning hook of claim 1, wherein said shank comprises a first section and a second section, one end of said first section forming said hook head, the other end of said first section being connected to one end of said second section, the other end of said second section being connected to said handle, said first section and said second section having an included angle β, 130 ° β 150 °.

9. The alignment hook of claim 8 wherein the first and second segments each have an outer diameter no greater than 2 mm.

10. The positioning hook according to claim 1, wherein the handle is cylindrical and the outer wall of the handle is provided with anti-slip threads.

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