CN215994480U

CN215994480U - Positioner for vitreous cavity injection

Info

Publication number: CN215994480U
Application number: CN202121279523.6U
Authority: CN
Inventors: 周黎纹; 徐梁
Original assignee: QINGPU BRANCH OF ZHONGSHAN HOSPITAL FUDAN UNIVERSITY
Current assignee: QINGPU BRANCH OF ZHONGSHAN HOSPITAL FUDAN UNIVERSITY
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2022-03-11
Anticipated expiration: 2031-06-08

Abstract

The utility model relates to a positioner for vitreous cavity injection, which is characterized by comprising a connecting ring, a connecting rod and an insertion guide ring, wherein the connecting ring is used for embedding one foot of surgical forceps; the injector is inserted along the needle insertion guide ring for injection; the connecting ring is fixedly connected with the needle inserting guide ring through a connecting rod; the distance between the central point of the connecting ring and the central point of the needle insertion guide ring is 3.5-4mm, and the central point of the connecting ring and the central point of the needle insertion guide ring are positioned on the same straight line. The utility model has the advantages that: the operation is simple, the measurement link is avoided, the operation time is reduced, the injection risk is reduced, and the safety of the treatment by applying the vitreous cavity injection technology is improved.

Description

Positioner for vitreous cavity injection

Technical Field

The utility model relates to a positioner for vitreous cavity injection, which is used for treating eye diseases and belongs to the technical field of medical instruments.

Background

Vitreous cavity injection is one of important treatment methods for ophthalmic diseases, and compared with other administration routes, the vitreous cavity injection has the advantages that the vitreous cavity injection is not limited by blood-eye barriers, the drug action is strong in pertinence, and higher drug concentration can be achieved in the vitreous cavity in a short time, so that the treatment effect is enhanced, the systemic toxic reaction is reduced, and the disease development is better controlled. At present, the technology is widely used for treating diseases such as macular edema, retinal neovascularization, endophthalmitis and the like. In operation, with reference to fig. 1, it should be noted that the injection site should be 3.5-4mm behind the limbus A, which is the pars plana, and has the characteristics of few blood vessels and no important tissue, so the injection risk is low. During injection, the physician holds the bulbar conjunctiva with a pair of forceps and pulls the eyeball to expose the injection site, the assistant measures a 3.5-4mm point from the corneal limbus with a ruler, and the physician advances the needle from the point toward the center of the vitreous body with the other hand holding the syringe. If the needle inserting position is wrong during operation, complications such as cataract, retinal detachment, intraocular hemorrhage and the like can be caused.

Because the treatment process needs the participation of an assistant, the success rate of the treatment depends on the cooperation of the measurement of the assistant and the needle insertion of a doctor, and certain difficulty exists, thus preventing the popularization of the treatment method. Therefore, a special tool is needed to enable the doctor to operate independently, and the success rate of treatment is improved.

Disclosure of Invention

It is an object of the present invention to provide a tool that enables a physician to independently perform a vitreous cavity injection.

In order to achieve the above object, the present invention provides a positioner for vitreous cavity injection, which is characterized by comprising a connecting ring for inserting one leg of surgical forceps, a connecting rod and an insertion needle guide ring; the injector is inserted along the needle insertion guide ring for injection; the connecting ring is fixedly connected with the needle inserting guide ring through a connecting rod; the distance between the central point of the connecting ring and the central point of the needle insertion guide ring is 3.5-4mm, and the central point of the connecting ring and the central point of the needle insertion guide ring are positioned on the same straight line.

Preferably, the attachment ring has a rectangular hollow slot for insertion of one of the legs of the surgical forceps.

Preferably, the needle insertion guide ring is a circular ring body, and the inner diameter of the circular ring body is the same as the outer diameter of the injection syringe.

Preferably, the distance between the center point of the hollow groove of the connecting ring and the center point of the torus is 3.5-4mm, and the center point of the hollow groove and the center point of the torus are located on the same straight line.

The utility model has the advantages that: the operation is simple, the measurement link is avoided, the operation time is reduced, the injection risk is reduced, and the safety of the treatment by applying the vitreous cavity injection technology is improved.

Drawings

FIG. 1 is a schematic view of an eyeball;

FIG. 2 is a schematic view of the construction of the surgical forceps;

FIG. 3 is a top view of a schematic of a positioner for use in a vitreous cavity injection;

FIG. 4 is a front view of a schematic of a positioner for use in a vitreous cavity injection.

Detailed Description

The utility model will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.

As shown in fig. 3 and 4, the positioner for vitreous cavity injection disclosed by the utility model comprises a connecting ring 5, a connecting rod 4 and an insertion needle guide ring 3. The connecting ring 5 is fixedly connected with the needle inserting guide ring 3 through the connecting rod 4. The connection ring 5 has a rectangular hollow groove into which one leg 2 of a general conventional surgical forceps 1 as shown in fig. 2 is inserted. The distance between the center point of the hollow groove of the connecting ring 5 and the center of the needle inserting guide ring 3 is 3.5-4 mm. The needle inserting guide ring 3 is a circular ring body, and the inner diameter of the circular ring body is the same as the outer diameter of the injection needle cylinder. The needle point of the injection needle is consistent with the center of the injection needle cylinder. The center point of the hollow groove of the connecting ring 5 and the center of the needle inserting guide ring 3 are positioned on the same straight line. The positioner for vitreous cavity injection provided by the utility model is made of high polymer materials through injection molding and is disposable.

When the locator provided by the utility model is used for injecting into the vitreous cavity of an eyeball, an operator inserts the hollow groove of the connecting ring 5 into one foot 2 of the surgical forceps 1, presses one foot 2 of the surgical forceps 1 on the corneal limbus A shown in figure 1 with one hand, and injects the injector along the needle insertion guide ring 3 with the other hand, so that the injection part is ensured to be 3.5-4mm away from the corneal limbus, and the needle cylinder is positioned in the needle insertion guide ring 3, thereby ensuring the needle insertion direction and avoiding complications such as cataract, retinal detachment, intraocular hemorrhage and the like possibly caused by errors of the needle insertion point and the needle insertion direction.

Claims

1. A locator for vitreous cavity injection, characterized by that, include the connecting ring, tie rod and needle insertion guide ring used for imbedding a foot of the surgical forceps; the injector is inserted along the needle insertion guide ring for injection; the connecting ring is fixedly connected with the needle inserting guide ring through a connecting rod; the distance between the central point of the connecting ring and the central point of the needle insertion guide ring is 3.5-4mm, and the central point of the connecting ring and the central point of the needle insertion guide ring are positioned on the same straight line.

2. A positioner for use in intravitreal injection according to claim 1, wherein the coupling ring has a rectangular hollow slot for receiving one of the legs of the surgical forceps.

3. The positioner for vitreous cavity injection according to claim 2, wherein the needle insertion guide ring is a circular ring having an inner diameter identical to an outer diameter of the syringe barrel.

4. The positioner for vitreous cavity injection according to claim 3, wherein the distance between the center point of the hollow groove of the connection ring and the center point of the torus is 3.5 to 4mm, and the center point of the hollow groove and the center point of the torus are located on the same straight line.