CN211633872U - Syringe capable of being accurately positioned - Google Patents

Abstract

The application discloses syringe that can pinpoint includes: a cylinder (1); a plunger (2) movably disposed within the barrel (1); at least two distance-determining markings (3) arranged on the barrel (1) or the plunger (2) for assisting an operator in determining a target position. The application provides a but syringe of pinpointing fixes a position target location through the mark assistant operator that two distances are confirmed to make the syringe needle of connection on the syringe can pierce from target location accurately, reduce the emergence probability that the drift position deviation caused the damage.

Description

Syringe capable of being accurately positioned

Technical Field

The application relates to the technical field of medical instruments, in particular to an injector capable of being accurately positioned.

Background

With the continuous and deep understanding of the pathogenesis of eye diseases by clinicians and the development of drug research, the intravitreal cavity injection for treating the eye fundus diseases shows good curative effect in recent years, so that some diseases without a definite treatment method can be effectively controlled.

Vitreous cavity injection is a common operation in ophthalmology, after eye preparation is completed, standard eye disinfection is carried out in an operating room according to an internal eye operation (such as cataract operation), surface anesthetic is spotted, then required medicine is injected into the vitreous body of an eye at a position 3-4mm away from the edge of a corneal membrane, and local higher medicine concentration is kept, so that the effect of treating diseases is realized.

The disease range suitable for intravitreal injection comprises: (1) intraocular neovascularization diseases, including choroidal neovascularization due to various causes, such as age-related macular degeneration, high myopia macular degeneration, mesosmosis, and the like; retinal neovascularization such as retinal neovascularization or microangiopathy caused by diabetic retinopathy, vein occlusion, periretinal phlebitis, Coats' disease, and the like; diseases such as neovascular glaucoma; (2) macular edema caused by various reasons, such as diabetic macular edema, macular edema caused by various diseases after cataract surgery or uveitis, and the like; (3) various intraocular infections, such as bacterial, fungal and viral infections.

However, when the ophthalmologist carries out the vitreous cavity injection treatment at present, the doctor is often required to judge the position 3-4mm behind the corneal limbus by experience and insert the needle, and once the needle insertion position deviates, the following complications may occur: firstly, traumatic cataract can be caused when the needle is inserted in front; second, the posterior approach may injure the retina and cause retinal and choroidal detachment. Both of these complications are very serious, require surgical treatment, and seriously affect the vision and quality of life of the patient.

Therefore, how to accurately position the needle insertion position is a technical problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model aims to provide an injector which can be accurately positioned; the application provides a but syringe of pinpointing fixes a position target location through the mark assistant operator that two distances are confirmed to make the syringe needle of connection on the syringe can pierce from target location accurately, reduce the emergence probability that the drift position deviation caused the damage.

The utility model provides a technical scheme as follows:

an accurately positionable syringe comprising:

a barrel;

a plunger movably disposed within the barrel;

at least two distance determining markings disposed on the barrel or the plunger for assisting an operator in determining a target position.

Preferably, three marks are provided, which are a first mark, a second mark and a third mark respectively, wherein the first mark is used for indicating a reference point, the second mark is used for indicating the shortest distance between the target position and the reference point, and the third mark is used for indicating the longest distance between the target position and the reference point.

Preferably, the distance between the first mark and the second mark is 3mm, and the distance between the first mark and the third mark is 4 mm.

Preferably, a fourth mark is further provided, the fourth mark being located between the second mark and the third mark for indicating an optimal distance of the target position from the reference point.

Preferably, the mark is a colored coating or any one or combination of several of bulges or depressions on the surface of the barrel or the plunger.

Preferably, the plunger comprises a sliding part movably arranged in the barrel, and a rod connected with the sliding part, wherein one end of the rod far away from the barrel is provided with a plane which is expanded outwards, and the marks are arranged on the plane.

Preferably, the marks are all arranged on a connecting line of a central point of the plane and any point of the plane edge, and one of the marks is positioned on the plane edge.

Preferably, the injector is embodied as a vitreous cavity injector.

To the problem that prior art exists, this application provides a syringe that can pinpoint, the mark assistant operator who confirms through two distances fixes a position the target location to make the syringe needle of connection on the syringe can pierce from the target location accurately, reduce the emergence probability that the drift position deviation caused the damage.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural view of an injector in embodiment 1 of the present invention;

FIG. 2 is a schematic sectional view of an injector in example 1 of the present invention;

fig. 3 is a schematic view of the plane 221 of the injector in embodiment 1 of the present invention;

fig. 4 is a schematic view of the plane 221 of the injector in embodiment 2 of the present invention;

reference numerals: 1-a cylinder body; 2-a plunger; 21-a sliding part; 22-a rod; 221-plane; 3-labeling; 31-a first marker; 32-a second marker; 33-a third marker; 34-fourth marker.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, 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 only a part of the embodiments of the present application, and not all of the embodiments. 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 will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, the meaning of a plurality of or a plurality of is two or more unless specifically limited otherwise.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the practical limit conditions of the present application, so that the modifications of the structures, the changes of the ratio relationships, or the adjustment of the sizes, do not have the technical essence, and the modifications, the changes of the ratio relationships, or the adjustment of the sizes, are all within the scope of the technical contents disclosed in the present application without affecting the efficacy and the achievable purpose of the present application.

The embodiments of the present application are written in a progressive manner.

As shown in fig. 1 to 4, an embodiment of the present invention provides an injector capable of being accurately positioned, including:

a cylinder body 1;

a plunger 2 movably disposed within the barrel 1;

at least two distance determining markings 3 provided on the barrel 1 or the plunger 2 for assisting an operator in determining a target position.

To the problem that prior art exists, this application provides a syringe that can pinpoint, and 3 supplementary operators that confirm through two distances fix a position the target location to make the syringe needle of connection on the syringe pierce from the target location accurately, reduce the emergence probability that the drift position deviation caused the damage.

When the injector provided by the application is used, an operator enables one mark 3 to coincide with a reference point (for example, when a vitreous cavity is injected, the reference point is the edge of a cornea), because the distance between the two marks 3 is predetermined, the position of the other mark 3 which is not coincident with the reference point is a target position, and the operator enables the needle head to coincide with or approach the position of the mark 3 as much as possible and then inserts the needle, so that accurate positioning can be realized.

The syringe provided by the application can be a syringe with an integrated needle and can also be a syringe with a detachable needle.

Preferably, three marks 3 are provided, namely a first mark 31, a second mark 32 and a third mark 33, wherein the first mark 31 is used for indicating a reference point, the second mark 32 is used for indicating the shortest distance between the target position and the reference point, and the third mark 33 is used for indicating the longest distance between the target position and the reference point.

More preferably three marks are provided, wherein a first mark 31 is used to indicate a reference point, the first mark 31 being coincident with the reference point in use; the second mark 32 and the third mark 33 are used for indicating the closest distance and the farthest distance from the target position to the reference point, respectively, and indicate to the operator that the operator should insert the needle between the second mark 32 and the third mark 33, but not smaller than the distance between the first mark 31 and the second mark 32, or larger than the distance between the first mark 31 and the third mark 33.

Preferably, the distance between the first mark 31 and the second mark 32 is 3mm, and the distance between the first mark 31 and the third mark 33 is 4 mm.

When injecting in vitreous cavity, 3-4mm needle insertion behind the corneal limbus is needed, therefore, the distance between the first mark 31 and the second mark 32 is set to be 3mm, the distance between the first mark 31 and the third mark 33 is set to be 4mm, after the first mark 31 is overlapped with the corneal limbus, the distance between the second mark 32 and the third mark 33 is the distance of 3-4mm behind the corneal limbus, which is convenient for operators to refer and operate.

In this application, set up quantity, the distance of mark, set up according to the required distance range of injection operation, rather than set up a plurality of scales like the ruler, can avoid the scale too much to hinder operator's sight, also can avoid because the operator counts the problem emergence of wrong interval quantity (like each millimeter interval of ruler) and lead to the position deviation of inserting a needle.

Preferably, a fourth mark 34 is further provided, the fourth mark 34 being located between the second mark 32 and the third mark 33 for indicating an optimal distance of the target position from the reference point.

The injector provided by the application can be used for setting an additional distance according to the requirements of other operations besides setting a mark according to 3-4mm behind the corneal limbus; when the distance between the second mark 32 and the third mark 33 is relatively long, a fourth mark 34 may be additionally arranged between the second mark 32 and the third mark 33 to indicate the optimal distance between the target position and the reference point, so that the operator can perform the operation to insert the needle as close to the fourth mark 34 as possible.

In the present application, when three marks 3, four marks 3, or more are provided, the marks are provided on the same straight line, and the second mark 32 is located between the first mark 31 and the third mark 33; the fourth mark 34 is located between the second mark 32 and the third mark 33. The marks 3 are arranged in a straight line so that when the first mark 31 and the reference point coincide, the second mark 32, the third mark 33 or the third mark 34 are located at different positions in the same direction from the reference point, rather than at different divergent distances in different directions, for easier reference by the operator. When the direction of the line does not correspond to the desired direction, the operator rotates the injector to adjust the orientation of each mark 3 on the line.

Preferably, the mark 3 is a colored coating, or any one or a combination of several of protrusions or recesses on the surface of the barrel 1 or the plunger 2.

In this application, the mark 3 may be a colored coating, or a protrusion, or a recess, or a coating is provided in the recess, or a coating is provided on the protrusion, so that an operator can easily see the mark 3 for positioning. The respective marks 3 may be uniformly provided as a coating having a color, or may be uniformly provided as a protrusion; it is also possible to arrange some of the marks 3 in one pattern and some of the marks 3 in another pattern. For example, when four marks 3 are provided, the first mark 31, the second mark 32, and the third mark 33 are provided as protrusions, and the fourth mark 34 is provided with a black coating for distinction and for easy identification and reference by an operator.

The markings 3 are preferably provided as protrusions or recesses which, while marking the position, do not obstruct the operator's view, since the syringes are usually made of transparent glass or plastic.

Preferably, the plunger 2 comprises a sliding part 21 movably arranged in the cylinder 1, and a rod 22 connected with the sliding part 21, one end of the rod 22 far away from the cylinder 1 is provided with a plane 221 which is flared outwards, and the marks 3 are all arranged on the plane 221.

In the present application, it is preferable that all the marks 3 are disposed on the plane 221 at the end of the rod 22, when the injector is used, the operator makes the injector perpendicular to the operation surface (e.g., the approximate plane where the eyeball is located), and then the operator observes from directly above the injector, and at this time, the sight line of the operator and the axis of the rod 22 are located on the same straight line, and the plane 221 is parallel to the operation surface, so that the marks 3 disposed on the plane 221 can accurately indicate the positions of different distances of the operation surface, thereby improving the operation accuracy of the operator.

Preferably, the marks 3 are all disposed on a connecting line between a center point of the plane 221 and any point of the edge of the plane 221, and one of the marks 3 is located at the edge of the plane 221.

All the marks 3 are arranged on a straight line, and the straight line is a connecting line of the central point of the plane 221 and any point of the edge of the plane 221, (when the plane 221 is circular, the connecting line of the edge of the plane 221 and the center of the circle), and one of the marks 3 is arranged on the edge of the plane 221, and is generally taken as a point which is coincident with the reference point. For example, when the first mark 31, the second mark 32, and the third mark 33 are provided, the mark 3 provided at the edge of the plane 221 is generally the first mark 31, and the second mark 32 and the third mark 33 are provided on a line connecting the center point of the plane 221 and the first mark 31. More preferably, the width of the flat surface 221 (the diameter of the flat surface 221 when it is circular) is the distance between the first mark 31 and the third mark 33, so that the width of the flat surface 221 can indicate the farthest distance for the operator to recognize, and the material used for the flat surface 221 can be saved. The step of locating one of the marks 3 at the edge of the plane 221 means that the mark 3 is located as close to the edge of the plane 221 as possible, but when the mark 3 is set to be convex or concave, the position is indicated by using the peak of the convex or the lowest point of the concave, and a slight distance still exists between the mark and the edge of the plane 221, and at this time, the reference point cannot be directly indicated by the edge of the plane 221; when the mark 3 is provided as a colored coating, it may coincide with the edge of the plane 221, indicating a reference point.

Preferably, the injector is embodied as a vitreous cavity injector.

The application provides an injector, specifically be the vitreous chamber injector that ophthalmology field is commonly used, can assist the operation that ophthalmologist carries out vitreous chamber injection treatment, simple and convenient easy-to-use reduces the complication of operation.

EXAMPLE 1 vitreous chamber Syringe

An accurately positionable vitreous cavity syringe comprising:

a cylinder body 1;

a plunger 2 movably disposed within the barrel 1;

the plunger 2 comprises a sliding part 21 movably arranged in the barrel 1 and a rod 22 connected with the sliding part 21, one end of the rod 22 far away from the barrel 1 is provided with a plane 221 which is expanded outwards, and three marks 3 are arranged on the plane 221 and are used for assisting an operator in determining a target position.

The three marks 3 are respectively a first mark 31, a second mark 32 and a third mark 33, the first mark 31 is used for indicating a reference point, the second mark 32 is used for indicating the shortest distance between the target position and the reference point, and the third mark 33 is used for indicating the longest distance between the target position and the reference point. Three of the marks 3 are protrusions located on the plane 221. The first mark 31 is located at the edge of the plane 221, the apex of the protrusion is at a slight distance from the edge of the plane 221, and the second mark 32 and the third mark 33 are located on the line connecting the first mark 31 and the center of the plane 221.

The first mark 31 is spaced from the second mark 32 by 3mm (distance denoted by distance a in fig. 3), and the first mark 31 is spaced from the third mark 33 by 4mm (distance denoted by distance b in fig. 3).

Example 2

An accurately positionable syringe comprising:

a cylinder body 1;

a plunger 2 movably disposed within the barrel 1;

the plunger 2 comprises a sliding part 21 movably arranged in the barrel 1 and a rod 22 connected with the sliding part 21, one end of the rod 22 far away from the barrel 1 is provided with a plane 221 which is expanded outwards, and three marks 3 are arranged on the plane 221 and are used for assisting an operator in determining a target position.

The four marks 3 are respectively a first mark 31, a second mark 32, a third mark 33 and a fourth mark 34, the first mark 31 is used for indicating a reference point, the second mark 32 is used for indicating the shortest distance between the target position and the reference point, the third mark 33 is used for indicating the longest distance between the target position and the reference point, and the fourth mark 34 is located between the second mark 32 and the third mark 33 and is used for indicating the optimal distance between the target position and the reference point.

The first mark 31, the second mark 32, and the third mark 33 are all protrusions located on the plane 221. The fourth mark 34 is a coating on the plane 221. The first mark 31 is located at the edge of the plane 221, the vertex of the protrusion is at a slight distance from the edge of the plane 221, and the second mark 32, the third mark 33 and the fourth mark 34 are located on the connecting line of the first mark 31 and the center of the plane 221.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. An accurately positionable syringe, comprising:

a cylinder (1);

a plunger (2) movably disposed within the barrel (1);

at least two distance-determining markings (3) arranged on the barrel (1) or the plunger (2) for assisting an operator in determining a target position.

2. Syringe according to claim 1, characterized in that three said marks (3) are provided, respectively a first mark (31), a second mark (32), a third mark (33), said first mark (31) being intended to indicate a reference point, said second mark (32) being intended to indicate the shortest distance of the target position from the reference point, said third mark (33) being intended to indicate the longest distance of the target position from the reference point.

3. Syringe according to claim 2, characterized in that the first mark (31) is at a distance of 3mm from the second mark (32) and the first mark (31) is at a distance of 4mm from the third mark (33).

4. Syringe according to claim 2, characterised in that a fourth marker (34) is provided, the fourth marker (34) being located between the second marker (32) and the third marker (33) for indicating the optimal distance of the target position from the reference point.

5. Syringe according to any one of claims 1 to 4, characterized in that the markings (3) are embodied as a coloured coating or as any one or a combination of several projections or recesses on the surface of the barrel (1) or plunger (2).

6. Syringe according to claim 5, characterized in that the plunger (2) comprises a sliding portion (21) which is movably arranged inside the barrel (1), and a rod (22) which is connected to the sliding portion (21), the end of the rod (22) remote from the barrel (1) being provided with a flared plane (221), the markings (3) being provided all on said plane (221).

7. Syringe according to claim 6, characterized in that said marks (3) are all arranged on the line connecting the central point of said plane (221) with any of the points of the edge of said plane (221), and in that one of said marks (3) is located at the edge of said plane (221).

8. Syringe according to any one of claims 1 to 4, characterized in that the syringe is in particular a vitreous cavity syringe.

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