CN209770658U - Incision dilator for operation and operation kit - Google Patents

Abstract

an incision dilator for operation and an operation kit belong to the field of medical instruments. The dilator includes a receptacle and an insert. Wherein the receptacle has a cavity defined by an inner wall and capable of storing fluid directed out of the cutout. The insert body is formed by extending from a first end to a second end. The insert is configured to be inserted into the incision from the second end to expand the incision in a manner that partially or fully enters the incision. The insert is connected with the container by a first end. And the inner wall of the container extends to the surface of the insert body to be connected, so that the fluid guided out from the incision can be transferred to the cavity through the surface of the insert body. The dilator has simple structure and can be well inosculated with the corneal side incision, thereby achieving the effect of expanding the side incision under the condition of not damaging the cornea.

Description

Incision dilator for operation and operation kit

Technical Field

The application relates to the field of medical equipment, in particular to an incision dilator for operation and an operation kit.

Background

In cataract surgery, the peripheral iris can be deviated from the main incision and bad accommodation can be caused by factors such as insufficient sealing of the main incision, excessive stimulation of the iris in the surgery, loss of tension of the iris due to iris lesion, shallow anterior chamber, and increase of intraocular pressure due to external force or self reasons of a patient. Therefore, after implanting the intraocular lens, how to close the main incision becomes the key to the completion of the surgery. The iris which is dislocated by reposition becomes the precondition of sealing the main incision.

Currently, it is common to clinically dilate the anterior chamber with viscoelastic and then reduce the iris with an iris restorer or irrigation needle. In fact, almost all of the excessive viscoelastic injected through the main incision (or the side incision) flows back from the main incision (the side incision is small and is kept relatively closed under the pressure of the anterior chamber of the eye), so that the peripheral iris is driven to further escape from the main incision, vicious circle is caused, the iris is difficult to reset, and the difficulty of the operation is greatly increased.

Therefore, there is a need for an apparatus that reduces backflow of viscoelastic agents.

The information disclosed in this background section is only for enhancement of understanding of the general background of the application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

based on the shortcomings of the prior art, the present application provides a surgical incision expander and surgical kit to partially or fully improve, and even solve, the problem of viscoelastic backflow in cataract surgery.

The application is realized as follows:

In a first aspect of the present application, an example is provided of a surgical incision dilator.

The dilator includes:

A receptacle having a cavity defined by an inner wall and capable of storing fluid directed out of the cutout;

An insert extending from a first end to a second end and configured to conform to the incision, the insert having a fluid passageway defined by an inner surface, an outer surface opposite the inner surface, the insert configured to expand the incision by insertion into the incision from the second end partially or fully into the incision;

The insert is connected to the receptacle at a first end and the inner wall extends to contact an inner surface of the insert to enable fluid from the incision to be transferred to the cavity via the fluid passageway of the insert.

Conventional cataract surgery requires the making of 2 incisions, namely a main incision (primary operation: capsulorhexis, phacoemulsification to remove clouded matter, implantation of an intraocular lens, etc.) and a side incision (secondary operation). In cataract surgery, it is often important that the side incision remain airtight, such as to maintain stable anterior chamber space. In special cases (such as when the iris is separated from the main incision) and the iris needs to be restored, a tool special for expanding the side incision (enabling viscoelastic agents to enter from the main incision and then to be discharged from the expanded side incision) is designed by utilizing the potential expansibility of the side incision, so that the purpose of restoring the iris (or necessary tissues in the eye) is achieved (on one hand, the backflow of the viscoelastic agents and perfusion fluid from the main incision is reduced, and on the other hand, the flow direction of the viscoelastic agents can drive the separated iris to return to the eyeball).

That is, the side incision is expanded and spread by the insertion body of the expander, so that the side incision and the main incision form a communicating structure through which fluid (e.g., viscoelastic in the example) can pass. That is, the viscoelastic agent can pass through the main incision and then flow out of the side incision. While viscoelastic agents can cause the iris to be carried along and hold the eyeball during flow. Thus, the receptacle of the dilator may also be used to receive viscoelastic entering from the main incision and exiting from the side incision.

In combination with the first aspect, in some alternative examples of the first possible implementation of the first aspect of the present application, the cross-section of the insert body between the first end and the second end is oval.

The surface of the insertion body is formed in an elliptical shape so that it can have relatively good conformity with the incision.

In combination with the first possible implementation manner of the first aspect, in some alternative examples of the second possible implementation manner of the first aspect of the present application, the length of the major semi-axis of the ellipse is twice the length of the minor semi-axis.

The adjustment of the oval shape can be achieved by adjusting the size of the oval, i.e. the relative size between its minor and major axes, so that it can have a better fit with the incision.

In combination with the first aspect or the first and second possible implementation manners of the first aspect, in some alternative examples of the third possible implementation manner of the first aspect of the present application, the second end forms a slope facilitating insertion into the incision.

The second end of the insert is beveled to allow for easier insertion of the insert into the incision.

With reference to the third possible implementation manner of the first aspect, in some optional examples of the fourth possible implementation manner of the first aspect of the present application, the included angle between the inclined surface and the outer surface is 45 to 60 degrees.

The ease of insertion of the insert may be further improved by appropriate selection of the angle of inclination of the ramp.

In combination with the third possible implementation manner of the first aspect, in some optional examples of the fifth possible implementation manner of the first aspect of the present application, the slope is configured at the second end in a manner that the slope is inclined and convex from the first end to the second end.

the inclined surface is arranged in an inclined and convex manner so as to be able to contact the incision with a smaller contact area, thereby making it easier to insert the insertion body.

In combination with the first aspect, in some optional examples of the sixth possible implementation manner of the first aspect of the present application, the number of the insert bodies is at least two, and an included angle of 90 degrees is formed between two adjacent insert bodies.

The insert bodies have a predetermined length from a first end to a second end, and the respective insert bodies have the same or different predetermined lengths.

The insert bodies are arranged in a plurality of modes, the insert bodies can be selected to be used according to needs, and meanwhile, in order to avoid mutual interference between the insert bodies, space can be reserved for operation due to the spaced arrangement between the adjacent insert bodies.

With reference to the first aspect, in some optional examples of the seventh possible implementation of the first aspect of the present application, the receptacle is hemispherical; alternatively, the cavity is hemispherical.

The receptacle is constructed in a spherically curved configuration to reduce false contact with the notch during operation.

In combination with the first aspect, in some alternative examples of the eighth possible implementation of the first aspect of the present application, the receptacle and the insert are both made of an alloy.

The alloy material can give consideration to durability (difficult corrosion or corrosion) and portability to a certain extent, and improves the use convenience and reusability of the dilator.

In a second aspect of the present application, a surgical kit is provided in an example.

the operation kit comprises a container and the incision dilator for operation. Wherein the dilator is removably enclosed within the container.

The operation kit provides a storage container for the incision dilator for operation, and can solve the problems of storage and placement of the incision dilator.

In the above implementation, the dilator provided by the embodiment of the present application has a fluid collecting or leading-out portion (receiver) and a side-incision expanding portion (insertion body). The two are mutually matched, the fluid flowing from the main incision and then flowing from the side incision is released through the expansion side incision, and the iris is carried back to the eyeball through the flow of the fluid.

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 structural view of a dilator according to an embodiment of the present disclosure from a first perspective;

FIG. 2 is a schematic structural view of a second perspective of the dilator provided by embodiments of the present application;

FIG. 3 is a schematic structural view from a third perspective of a dilator provided in embodiments of the present application (only one insert is shown);

Fig. 4 is a schematic structural view of a fourth perspective of the dilator provided by an embodiment of the present application (only one insert is shown).

Icon: 100-a dilator; 101-a receptacle; 1012-outer wall; 1013-an inner wall; 1011-cavity; 102-an insert; 1021-an outer surface; 1022-a fluid channel; 1023-inner surface; 201-a first end; 202-a second end; 203-inclined plane.

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.

In cataract surgery, incisions (including main and side incisions) are required in the eye and are treated accordingly. However, it is a difficult problem how to receive the iris after the operation. The main incision needs to be closed after the operation. This sealing process may involve the use of viscoelastic agents. However, the amount of viscoelastic agent used is not well controlled, thereby creating an excess of viscoelastic agent. Excess viscoelastic will leak (run) from the main incision-taking into account the adhesive properties of the viscoelastic-and thereby carry the iris out.

therefore, in the case of using the viscoelastic agent to hold the iris, how to ensure that the viscoelastic agent flows out normally and does not take out the iris if the excessive viscoelastic agent exists is a problem to be solved. Therefore, the inventors chose to utilize side cuts to channel the viscoelastic. Typically, the side incision is smaller relative to the main incision, and therefore, an expander is designed for more smooth viscoelastic outflow for non-invasively expanding the potentially closed side incision (facilitating viscoelastic outflow) to reduce or even avoid viscoelastic outflow (reflux) from the main incision, and correspondingly to avoid iris failure by the exiting viscoelastic being carried out of the main incision.

In the present example, a surgical incision dilator 100 is presented. The dilator 100 can be used to dilate a side incision while also being able to collect or direct/drain fluid (e.g., liquid) flowing from within the side incision. It should be noted that although described above in the context of cataract surgery, the exemplary dilator 100 does not limit the lateral incision dilation necessary for other procedures on the eye. The expanding device is used for expanding incisions and wounds in various places such as human body parts, animal bodies and tissues.

The exemplary surgical incision dilator 100 is comprised primarily of a two-part member. One of them is a part for the operator to hold and pinch, i.e., the receptacle 101. Meanwhile, the container 101 also has a storage function capable of temporarily storing a fluid such as a liquid. For surgical procedures, the aforementioned fluid may be blood, interstitial fluid, or the like. The second is for insertion into the side cut so that the side cut is squeezed and enlarged to expose more channels for fluid to escape, i.e., the insert 102.

The cooperation between the receptacle 101 and the insert 102 ensures that the accumulated fluid is discharged smoothly, but the iris is not carried out by the fluid flowing back to the main incision.

the exemplary dilator 100 will be described in more detail below in conjunction with the accompanying drawings.

Please refer to fig. 1 to 4.

the dilator 100 comprises a housing 101 and an insert 102.

Further, a container may be provided as necessary. Such an assembly may be presented in the form of a surgical kit. In other words, an example can also provide a surgical kit including a container, surgical incision dilator 100.

As the name implies, a container is a member used to contain other objects. For a surgical kit, a container is used to house the dilator 100, and obviously to enable use of the dilator 100, the dilator 100 is removably enclosed within the container. This often means that the container has an enclosing wall and a space defined by the enclosing wall. Further, the wall has a gap (through which the dilator 100 can pass) and a cover that can close the gap.

The cover body and the surrounding wall can be connected through a hinge, and the cover body and the surrounding wall can rotate mutually through the hinge. Alternatively, the wall and the cover are snap-fitted. Namely, the cover body and the surrounding wall can be mutually separated or mutually buckled.

To facilitate placement of the stent, the container has a slot therein that is the same or similar in shape to the stent 100. The dilator 100 can be inserted and stably retained in the groove. The dilator 100 may be removed from the slot, if necessary. Analogous to injection molding production, a male mold (male part) and a female mold (female part) are often involved; the groove may be considered a female die and the expander may be considered a male die.

The dilator 100 will be described in more detail below.

the receptacle 101 is a structural entity. It has a cavity 1011 defined by an inner wall 1013 and capable of storing or draining/diverting fluid exiting the side incision.

Generally, the overall general shape of the receptacle 101 may be arbitrarily selected, such as a rectangular parallelepiped, a cube, an ellipsoid, a sphere, or other profiled structure, etc. Of course, given the non-invasiveness of the eye and the cost of fabrication (including time cost), its shape is often desired to be a regular shape that is simpler and easier to fabricate. In addition, the design of the container 101 should also take into consideration its operability, i.e., whether it is easy for an operator to hold.

In the example, the receptacle 101 is alternatively chosen to be hemispherical (and of course spherical). Accordingly, the cavity 1011 (for storing fluid) in the receptacle 101 may also be hemispherical. The size (radius) of the spherical shaped receptacle 101 may also be selected as desired, for example 0.5 mm. Due to its cavity 1011, the receptacle 101 is substantially a shell, which may have a wall thickness of, for example, 0.1 mm.

The container 101 is also required to be particularly safe as a medical instrument. For example, since the container 101 is not easily corroded by body tissue fluid or the like, has good compatibility with skin, and has good durability (is easy to reuse), the container is made of an alloy. The material for forming the container 101 may be, for example, various medical metals such as titanium alloy or nonmetal (having appropriate hardness or toughness).

In addition, the housing 101 may be provided with a notch/opening in order to facilitate the introduction of the guided out, e.g. interstitial fluid, in the housing 101. The receptacle 101 shown in fig. 1 is not provided with a notch, which is shown in the configuration of fig. 2. The stent shown in fig. 2 differs from the stent shown in fig. 1 in whether or not a notch is provided. Fig. 2 is a schematic configuration diagram of the spreader with a notch as viewed from above, which is different from the container 101 in fig. 1. The opening may be as shown in the solution of fig. 2. The opening may be selectively opened on the opposite surface of the hemispherical case (the receptacle 101) to the two insertion bodies. In the case of an adjustment of the number and size of the insertion bodies, the position and size of the openings can also be adjusted accordingly.

The insert 102 generally extends from a first end 201 to a second end 202. Thus, the insert 102 may be generally rod-shaped or bar-shaped in external appearance. The insertion body 102 has appropriate strength (structural stability) so that it can maintain its shape when pressed by the side incision during insertion into the side incision, thereby allowing the side incision to be spread open.

Obviously, the structural stability provided by the insert 102 may be different for different side cuts (which may provide different compression forces) (and correspondingly, different requirements may be placed on the material). For example, for side cuts that provide greater compression, the insert 102 may be made of a hard metal material; for side incisions that provide relatively little squeezing, the insert 102 may be made of a soft material, such as medical grade silicone, rubber, plastic, etc.

In the illustrated example, the inserts 102 are made of an alloy. The material for the insertion body 102 may be the same as or different from the material for the container 101. The specific material selection of the two materials can be freely selected according to the design requirements, and the material selection is not specifically limited in the application. However, the same or similar materials are generally selected for the receptacle 101 and the insert 102 for ease of manufacture and connection.

In addition, the supporting force that the insertion body 102 can provide (to prop open the side incision during insertion of the side incision) is not only influenced by the material but also limited by the structure. Further, the insert 102 may be optionally manufactured with an oval configuration. That is, the cross-section of the insert 102 between the first end 201 and the second end 202 is oval. Alternatively, the outer profile of the cross-section of the insert 102 (i.e., the area of contact with the side cut) is elliptical. The oval shape may impart a smoother surface to the insert 102 (further, the surface of the insert 102 may also be smoothed, such as by grinding), while also being more easily conformable to the side incision.

Because the dilator 100 can direct fluid out of the side incision-and primarily through the insert 102-the insert 102 has a hole to serve as a flow path for the fluid. In the illustrated example, the insert 102 is provided with a fluid channel 1022. In other words, the insert 102 is a hollow structure and defines the fluid passage 1022 through the inner surface 1023. In other words, the fluid channel is through the insert 102 and is arranged from the first end 201 to the second end 202. The insert 102 also has an outer surface 1021 opposite the inner surface corresponding to the inner surface defining the fluid passageway. As such, in such an example, the insert 102 may also be a housing, which may be referred to as an elliptical cylindrical structure.

It should be understood that the insert 102 has an oval configuration, and that the configuration of the fluid passageway may be selected. Such as cylindrical, rectangular, conical, etc., as may be desired. In the example, the cross-section of both the outer surface 1021 and the inner surface 1023 of the insert 102 is elliptical.

As previously mentioned, the insert 102 is inserted into the side incision, in an example, the insert 102 expands the side incision with the second end 202 inserted into the side incision to partially or fully enter the side incision. Therefore, the insertion body 102 is connected to the housing 101 at the first end 201. Since the liquid in the side incision is directed out through the fluid passage 1022 of the insert 102 and the receptacle 101 is used to receive the liquid, the inner wall 1013 of the receptacle 101 defining the cavity 1011 extends into abutment with the inner surface 1023 of the insert 102 (defining the fluid passage 1022; it being understood that the outer wall 1012 of the receptacle 101 is interconnected with the outer surface 1021 of the insert 102) to enable the fluid directed out of the side incision to be transferred to the cavity 1011 via the fluid passage 1022 of the insert 102.

The insert 102 is desirably provided in a rectilinear configuration, i.e., extending linearly from the first end 201 to the second end 202. The external shape of the insertion body 102 is clarified by the following description in consideration of the general side cut shape. The cross-sectional shape of the insert 102, the oval shape, has a major axis AR twice as long as a minor axis AR (the oval shape has an ellipse index of about 3.23 and a circumference of about 3 mm). That is, the insert 102 is flat in any cross-section, or it may be referred to as a transverse oval. Alternatively, the elliptical perimeter of the first end 201 of the insert 102 may be made 3 mm; correspondingly, the major axis is 0.62mm and the minor axis is 0.31 mm. Likewise, the elliptical perimeter of the second end 202 of the insert 102 may be made 2 mm; correspondingly, the major axis is 0.42mm and the minor axis is 0.21 mm.

Further, the second end 202 of the insert body 102 may form a bevel 203 that facilitates insertion side cutting. By providing the bevel 203, the second end 202 has a relatively flatter structure (the thickness of the insert 102 may be tapered) that is easier to insert into the side incision, such that the process of extending the insert 102 into the side incision and expanding the side incision is gradual (the side incision width increases gradually). That is, the side incision is gradually dilated, rather than being sharply dilated. Clearly, snapping open a side incision can cause hazards such as tearing, which is desirable to avoid.

Further, similar to the design concept of the bevel 203, the insert 102 may also be tapered, i.e. gradually changing from the first end 201 to the second end 202, in the example, gradually decreasing from the first end 201 to the second end 202. As previously mentioned, the first end 201 has a major axis of 0.62mm (minor axis 0.31mm) and the second end 202 has a major axis of 0.42mm (minor axis 0.21 mm). This also allows for a gradual distraction of the contralateral incision. This is mentioned as the gradual decrease from the first end 201 to the second end 202 primarily refers to the elliptical cross-section of the outer contour/outer surface 1021 of the insert body 102. Thus, the elliptical cross-section of the inner surface/contour of the insert 102 may be constant throughout its length, but may of course be gradual (increasing or decreasing). In the example, the elliptical cross-section of the inner surface of the insert body 102 is decreasing simultaneously with the elliptical cross-section of the outer surface 1021, i.e. the fluid passage decreases gradually from the first end 201 to the second end 202 of the insert body 102.

optionally, the included angle B between the inclined surface 203 and the outer surface 1021 is 45-60 degrees, or 50-55 degrees. Of course, the angle may have other options and is not limited to the above angle. However, in practice, the above-described angles represent a desirable use effect, and are also balanced in terms of ease of fabrication of the insert 102. Further, the inclined surface 203 may also be configured at the second end 202 in a manner of being inclined and protruding from the first end 201 to the second end 202, corresponding to the configuration of the inclined surface 203.

Given the different sizes of side incisions, the dilator 100 may need to be configured accordingly to accommodate the need. In an example, this requirement can be met by adjusting the size of the insert 102. This may be accomplished by providing a plurality of inserts 102, and the size of each insert 102 is correspondingly configured to accommodate a correspondingly sized side cut. In the example, the difference in depth of the side cuts is mainly considered, and therefore the length of the insert 102 may be different, for example 1.00mm or 1.50 mm. That is, the inserts 102 have a predetermined length from the first end 201 to the second end 202, and each of the inserts 102 has the same or different predetermined length.

The insert body can be designed in a plurality of embodiments with different lengths, but also can be provided with different widths (area of the end face oval) according to requirements.

The dimensions of the dilator 100 with a single insert 102 are described above, but it is also possible to provide a plurality of inserts 102, e.g. two, three, four, in a single dilator 100, as desired, and arranged as desired. Of course, the number of the insertion bodies 102 may be appropriately selected and adjusted according to the size of the housing 101 and the size of the insertion bodies 102. In an example, there are at least two inserts 102, and an included angle a shown in fig. 2 is formed between two adjacent inserts 102 by 90 degrees; the insertion bodies 102 are arranged at intervals, so that space can be reserved, and the operation is convenient.

Based on the above structural design, the surgical incision dilator in the example has at least the following advantages:

1. The side incision is expanded to increase the discharge of the viscoelastic agent from the side incision and reduce the backflow of the viscoelastic agent from the main incision. The difficulty of returning and receiving the iris is reduced, and the main cut is simplified.

2. The alloy design is used, and the alloy can be repeatedly sterilized and utilized; the alloy has light weight and is not easy to separate after being inserted into the corneal side incision (the fixity is good);

3. Simple structure, novel design, reasonable.

4. The whole insertion section is designed in a transverse oval shape, the fit degree with the side incision of the cornea is high, and the side incision is hardly damaged;

5. The multi-head design of the insertion section of the dilator meets the requirements of side incisions with different sizes.

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 surgical incision dilator, the dilator comprising:

A receptacle having a cavity defined by an inner wall and capable of storing fluid directed out of the cutout;

An insert extending from a first end to a second end and conforming to the incision, the insert having a fluid passageway defined by an inner surface, an outer surface opposite the inner surface, the insert configured to be inserted into the incision from the second end to expand the incision in part or in whole to enter the incision;

The insert is connected to the receptacle at the first end and the inner wall extends to contact an inner surface of the insert to enable fluid from the incision to be transferred to the cavity via the fluid passageway of the insert.

2. the surgical incision dilator of claim 1, wherein the cross-section of the insert body between the first end and the second end is oval.

3. A surgical incision dilator as claimed in claim 2, wherein the major semi-axis of the ellipse is twice as long as the minor semi-axis.

4. A surgical incision dilator as claimed in any one of claims 1 to 3 in which the second end is beveled to facilitate insertion into the incision.

5. the surgical incision dilator of claim 4, wherein an angle between the inclined surface and the outer surface is 45-60 degrees.

6. The surgical incision expander of claim 4, wherein the bevel is configured at the second end in a manner that slopes and bulges from the first end to the second end.

7. The surgical incision dilator of claim 1, wherein the number of the insertion bodies is at least two, and an included angle of 90 degrees is formed between two adjacent insertion bodies;

The insert bodies have a preset length from the first end to the second end, and each insert body has the same or different preset length.

8. The surgical incision expander of claim 1, wherein the receptacle is hemispherical; alternatively, the cavity is hemispherical.

9. The surgical incision expander of claim 1, wherein the receptacle and the insert are made of an alloy.

10. A surgical kit comprising a container, a surgical incision dilator as in any one of claims 1-9, the dilator removably enclosed within the container.