CN218870639U - Positioning device for vitreous cavity injection - Google Patents

Abstract

The utility model relates to a positioner for vitreous chamber injection, positioner includes location angle gauge and aseptic cotton swab, the location angle gauge at its first end with aseptic cotton swab connects each other in order to form as one piece, and with the second end that the first end is relative is provided with a plurality of location pointed ends, a plurality of location pointed ends include the benchmark pointed end that aims at being put in the corneal limbus department of eye and apart from the most advanced distance tip of benchmark predetermined distance. By using such a positioning device, the operation time and the risk of infection of the instrument can be effectively reduced, while also allowing a more accurate determination of the location of the puncture point during the operation.

Description

Positioning device for vitreous cavity injection

Technical Field

The utility model relates to the field of medical equipment, specifically relate to the operating device of ophthalmology vitreous cavity injection, especially relate to a positioner for vitreous cavity injection.

Background

The eyeball consists of two parts, one part is the eyeball wall, and the other part is the content of the eye. The eyeball wall is divided into an outer membrane, a middle membrane and an inner membrane, wherein the outer membrane comprises a cornea and a sclera, the cornea occupies the front 1/6 of the outer membrane, the sclera occupies the rear 5/6 of the outer membrane, the middle membrane is a grape membrane and consists of an iris, a ciliary body and a choroid, and the inner membrane is a retina; the contents of the eye generally consist of crystals and vitreous.

The vitreous cavity injection in the ophthalmic surgery is a treatment technique in which a drug needs to be injected into the vitreous cavity through a vitreous access for various reasons, and is an important effective treatment means for various fundus diseases. In performing a vitreous cavity injection, after the initial disinfection step of the eye is completed, it is often necessary to determine the puncture point of the injection needle on the sclera by means of a positioning device (e.g., a protractor or angle square) to penetrate the sclera at a specific location and inject the drug into the vitreous cavity.

In a vitreous cavity injection procedure, accurately locating the position of the needle puncture point is an important step in the procedure. At present, an iron angle square or an angle gauge is generally adopted clinically, a doctor or an operator can position a puncture point at a position away from a corneal limbus by adjusting the scale of the angle square, and the puncture point is pressed by replacing a sterile cotton swab after the injection needle is used for administration, so that the medicine is prevented from flowing backwards. However, the angle gauge cannot be accurately positioned due to the fact that the angle gauge needs to be repeatedly sterilized and reused along with the sterilizing bag after being used for a long time, and potential cross infection risks exist. In addition, since the angle gauge and the aseptic cotton swab are two separate devices, an operator needs to put the angle gauge on the operating panel after using the angle gauge, then take the injection needle and the cotton swab, administer medicine with one hand, hold the cotton swab with the other hand, and press the injection position after pulling the needle, which brings great inconvenience to the injection work of the vitreous cavity.

SUMMERY OF THE UTILITY MODEL

The present invention has been made in view of such background, and it is an object of the present invention to provide a novel positioning device for vitreous cavity injection, which allows one or more of the above problems and/or other drawbacks of the prior art to be overcome.

The utility model provides a positioner for vitreous cavity injection, positioner is including location angle gauge and aseptic cotton swab, location angle gauge at its first end with aseptic cotton swab is connected each other in order to form one, and with the second end that the first end is relative is provided with a plurality of location pointed ends, a plurality of location pointed ends are including aiming at the benchmark pointed end that is put in the corneal limbus department of eye and apart from the most advanced predetermined distance's of benchmark distance is pointed end.

Advantageously, the positioning device is a single-use device.

Advantageously, the positioning angle gauge is provided with a first distance tip at a first predetermined distance from the reference tip and a second distance tip at a second predetermined distance from the reference tip, wherein the second predetermined distance is greater than the first predetermined distance.

Advantageously, said first predetermined distance is 3.5mm and said second predetermined distance is 4mm.

Advantageously, said first predetermined distance is 3mm and said second predetermined distance is 3.5mm.

Advantageously, the plurality of locating points are arranged in a linear array on the second end of the locating angle gauge.

Advantageously, the cross-section of the feeler gauge decreases progressively from the first end to the second end until an end edge with the plurality of feeler tips, which project outwards from the end edge, is finally formed at the second end.

Advantageously, the locating angle gauge is provided at the first end with a cavity for receiving one end of the sterile swab and an annular flange surrounding the cavity.

Advantageously, the positioning angle gauge is made of a plastic material.

Advantageously, one end of the sterile swab is fixed in the chamber so that it extends coaxially with the positioning angle gauge or obliquely with respect to the latter.

Adopt according to the utility model discloses a positioner for can realize one of following technological effect at least: the positioning and pressing functions are embodied on the same component, so that the operation of repeatedly taking instruments from the operation panel is reduced; because it is used only once, the risk of potential cross-infection is avoided; the positioning accuracy of the puncture point of the injection needle is improved; and improves the convenience of the vitreous cavity injection operation.

Drawings

The above and other features and advantages of the present invention will become more readily understood from the following description with reference to the accompanying drawings, in which:

figure 1 shows a schematic perspective view of a positioning device for intravitreal injection according to an embodiment of the invention;

fig. 2 shows a schematic front view of a positioning device for intravitreal injection according to an embodiment of the invention, wherein a partial enlarged view of part a is also shown; and

fig. 3 shows a schematic top view of a positioning device for intravitreal injection according to an embodiment of the invention.

All the figures are purely diagrammatic and not drawn to scale, and moreover they show only those parts which are necessary in order to elucidate the invention, other parts being omitted or merely mentioned. That is, the present invention may include other components in addition to those shown in the drawings.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention to those skilled in the art. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following aspects, features, embodiments and advantages are merely illustrative and should not be considered elements or limitations of the claims except where explicitly recited in a claim.

Terms such as "first," "second," and the like, are used hereinafter to describe elements of the present application and are used only to distinguish one element from another, and are not used to limit the nature, sequence, order, or number of such elements. In addition, it is to be noted that in the present description, identical and/or functionally identical technical features are provided with the same or similar reference signs.

As known to those skilled in the art, when performing a vitreous cavity drug injection procedure, the following procedure is typically performed: -fixing the patient's eye position; opening the intravitreal injection sterile pack, applying a disposable sterile patch, applying an eye speculum, and fixing the eye using forceps or an eye holder; -marking the puncture point of the injection needle with an angle gauge; -the injection needle is inclined and then vertically and slowly penetrated into the sclera, the needle point is penetrated into the eyeball center to a depth of at least 6mm, the injection is injected for administration, and the injection needle is slowly withdrawn after the administration; -pressing the injection site with a sterile cotton swab to prevent drug reflux. In particular, when the angle gauge is used to determine the puncture point of the injection needle, it is necessary to select angle gauges of different specifications depending on the type of eye. For example, according to the relevant regulations in the quality control Standard for vitreous Chamber Injectation of retinopathy in China, the puncture point should be 3.5mm to 4.0mm from the limbus for phakic eyes, and 3.0mm to 3.5mm from the limbus for aphakic or intraocular lens eyes and hypermetropia eyes.

In order to solve the disadvantages and deficiencies of the prior art, the present invention provides a novel positioning device for intravitreal injection, which is shown in fig. 1. The positioning device 1 comprises a positioning angle gauge 2 and a sterile cotton swab 3, the positioning angle gauge 2 being connected to each other at a first end 2a thereof and to said sterile cotton swab 3 so as to form a single piece, and being provided with a plurality of positioning tips 4 at a second end 2b opposite to said first end 2 a.

As shown in fig. 2, in order to facilitate the physician to determine the puncture position of the injection needle more conveniently when performing the operation, the plurality of positioning tips 4 comprises a reference tip 4a intended to be placed at the corneal limbus of the human eye and a distancing tip at a predetermined distance from the reference tip. Preferably, the spacer tip may comprise two spacer tips.

For example, for the case of a phakic eye, a first distancing tip 4b and a second distancing tip 4c may be included, respectively 3.5mm and 4mm from the reference tip. With this arrangement, the practitioner can select a suitable location (e.g., approximately 3.8mm from the limbus) between the first spaced tip 4b and the second spaced tip 4c as the puncture location when determining and marking the puncture site. For the case of aphakic or phakic, hyperopic eyes, a first distancing tip 4b and a second distancing tip 4c, 3mm and 3.5mm from the reference tip, respectively, may be included. Similarly, the practitioner can select a suitable location (e.g., approximately 3.3mm from the limbus) between the first and second spaced tips as the puncture location. By providing two distancing tips at different distances from the reference tip, the risk of a deviation of the puncture site position or the like due to operational randomness or error of the physician in case of using a single distancing tip is well avoided.

With continued reference to fig. 2, and in particular to the enlarged detail view of portion a in fig. 2, the reference tip 4a, the first distance tip 4b and the second distance tip 4c formed at the second end 2b of the positioning angle gauge 2 are preferably arranged in a linear arrangement on the end edge 5 of said second end 2b of said positioning angle gauge 2. The cross-section of the angle gauge 2 decreases or thins from the first end 2a to the second end 2b until the end edge 5 with the plurality of positioning tips 4 (see fig. 2 and 3) is finally formed at the second end 2b, from which end edge 5 the reference tip and the distance tips, respectively, project outwards, preferably in the longitudinal direction of the angle gauge 2.

Furthermore, the positioning angle gauge 2 is provided at the first end 2a with a cavity 6 for receiving one end of the sterile swab and an annular flange 7 surrounding the cavity (see fig. 2). A sterile cotton swab 3 may be fixed (e.g. press-fitted) within the cavity to remain in one piece with the locating angle gauge 2. The sterile swab 3 may extend coaxially with the positioning angle gauge 2, so that the other end of the sterile swab 3 coated with cotton faces in a direction away from the first end 2a of the positioning angle gauge 2. Alternatively, the sterile cotton swab 3 may also extend obliquely with respect to the positioning angle gauge 2, for example forming an obtuse angle therebetween.

Different with the iron angle gauge that often adopts among the prior art, according to the utility model discloses a location angle gauge adopts plastic materials to constitute, and constructs into disposable device (can abandon promptly after accomplishing the operation) with aseptic cotton swab, and this makes both saved the sterile operating procedure of diagonal square or angle gauge, can also avoid effectively that the apparatus that leads to because of used repeatedly is ageing and potential cross infection's risk.

Before vitreous chamber medicine injection begins, need to adopt and according to the utility model discloses the positioner confirms and mark point of puncture, the handheld integration subassembly that includes location angle gauge and aseptic cotton swab of operating personnel this moment, another handheld syringe needle, so can realize accomplishing the affirmation and the mark back to the point of puncture in operation process, need not to place the angle gauge and trade the cotton swab, but directly by the operator on one hand with this integration subassembly rotation 180 degrees, with aseptic cotton swab one end towards the affected eye, and the injection point is pressed to this aseptic cotton swab of usefulness after another hand injection is dosed, thereby effectively prevent medicine reflux and effective hemostasis. Obviously, this procedure is more efficient than the previous procedure in reducing the operating time and the risk of infection of the apparatus.

It should be noted that the above-described embodiments should be regarded as merely exemplary, and the present invention is not limited to these embodiments. Upon consideration of the present specification, those skilled in the art can make various changes and modifications without departing from the scope or spirit of the present invention. The true scope of the invention is defined by the following claims and their equivalents.

Claims (10)

1. A positioning device (1) for vitreous cavity injections, characterized in that said positioning device (1) comprises a positioning angle gauge (2) and a sterile cotton swab (3), said positioning angle gauge being connected to each other at a first end (2 a) thereof and to said sterile cotton swab (3) so as to be formed in a single piece, and being provided, at a second end (2 b) opposite to said first end (2 a), with a plurality of positioning tips (4) comprising a reference tip (4 a) intended to be placed at the corneal limbus of the eye and distancing tips at a predetermined distance from said reference tip.

2. The positioning device (1) according to claim 1, characterized in that the positioning device (1) is a single-use device.

3. The positioning device (1) according to claim 2, characterized in that the positioning angle gauge (2) is provided with a first distance tip (4 b) at a first predetermined distance from the reference tip (4 a) and a second distance tip (4 c) at a second predetermined distance from the reference tip (4 a), wherein the second predetermined distance is greater than the first predetermined distance.

4. A positioning device (1) according to claim 3, wherein said first predetermined distance is 3.5mm and said second predetermined distance is 4mm.

5. A positioning device (1) according to claim 3, wherein said first predetermined distance is 3mm and said second predetermined distance is 3.5mm.

6. The positioning device (1) according to any one of claims 1 to 5, characterized in that said plurality of positioning tips (4) are arranged in a linear arrangement on said second end (2 b) of said positioning angle gauge (2).

7. The positioning device (1) according to any one of claims 1 to 5, characterized in that the cross section of the positioning angle gauge (2) decreases gradually from the first end (2 a) to the second end (2 b) until an end edge (5) with the plurality of positioning tips (4) is finally formed at the second end, which protrude outwards from the end edge (5).

8. The positioning device (1) according to any one of claims 1 to 5, wherein the positioning angle gauge (2) is provided at the first end with a chamber (6) for receiving one end of the sterile swab (3) and an annular flange (7) surrounding the chamber.

9. The positioning device (1) according to any one of claims 1 to 5, characterized in that the positioning angle gauge (2) is made of a plastic material.

10. The positioning device (1) according to claim 8, characterized in that one end of the sterile cotton swab (3) is fixed in the chamber (6) so that the sterile cotton swab (3) extends coaxially with the positioning angle gauge (2) or obliquely with respect to the positioning angle gauge (2).

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