CN219439689U - Anterior segment perfusion tube - Google Patents

Abstract

The utility model discloses a perfusion tube for anterior ocular segment, which relates to the field of medical equipment and comprises a hose and a tube head, wherein the hose is fixedly connected with the tube head, the tube head comprises a tube body with the same diameter as the hose, a needle head is fixedly connected below the tube body, a protruding part capable of being clamped at a cornea side incision is arranged on the needle head, a needle hole is arranged at the tail end of the needle head, the opening of the needle hole is an inclined plane, and the needle hole can be inserted into the cornea side incision in an auxiliary manner. The utility model is applied to anterior segment perfusion, and when in use, the needle head can be inserted into the cornea side incision of the anterior segment to perform anterior segment continuous perfusion.

Description

Anterior segment perfusion tube

Technical Field

The utility model relates to medical equipment, in particular to an anterior ocular segment perfusion tube.

Background

The intraocular perfusion tube is a connecting pipeline for conveying perfusion fluid into the eyeball and maintaining the intraocular pressure to be stable. The current clinical intraocular perfusion tube consists of a straight tube with a metal head connected with a silica gel hose, wherein the diameter of the metal tube is 19G to 27G, and 23G and 25G are more commonly used. Are commonly used in closed glass cutting systems.

Due to the special anatomical structure of the eyeball, the ciliary body flat part of 3.5-4 mm after passing through the cornel sclera edge enters the eye when the intraocular perfusion tube is used in the vitreous body cutting operation process, and the area enters the eye to avoid damaging crystalline lens and retina tissues. In some ocular trauma disorders, corneal haze, lens haze, retinal detachment, and choroidal detachment often occur in combination.

The utility model discloses (bulletin) a anterior ocular segment perfusion device with the number of (CN 201698633U), which solves the problem that the physiological state of intraocular metabolism can be highly simulated, and medicines can be easily added into the device to simulate diseases and the influence of medicines, so that the real-time detection of intraocular pressure and other technical indexes is possible. The device is easy to prepare, stable in performance and high in repeatability, and the obtained data has high research value. However, the device acts on the ex-vivo eyeball, and various structures designed for the device are designed for the ex-vivo eyeball, which results in that the device is not suitable for the living eyeball.

Currently, posterior segment perfusion tubes, but not anterior segment perfusion tubes, are used in surgery to maintain anterior segment space and intraocular pressure. If an posterior segment perfusion tube specially designed for posterior segment surgery is to be used as an anterior segment perfusion tube, there are several problems as follows: (1) the needle hole of the existing posterior segment perfusion tube is horizontal, and the insertion of the side incision is difficult; (2) the needle is a smooth, streamlined shaft that is difficult to catch on the corneal side incision. (3) The existing back section perfusion tube needle is slightly long, and the risk of damaging crystals exists under the condition that the pupil is larger than 4 mm. Therefore, the application is improved on the basis of the existing posterior segment perfusion tube, and the anterior segment perfusion tube is invented.

Disclosure of Invention

The utility model aims to provide an anterior ocular segment perfusion tube with a needle hole as an inclined plane, which can be clamped on a cornea side incision and is not easy to damage crystals.

The main idea of the technical scheme adopted by the utility model is as follows: the existing posterior perfusion tube is improved and then used as an anterior perfusion tube, and the main improvement points are that (1) the needle hole opening at the tail end of the needle head is changed from horizontal to smooth inclined plane, and the edge of the needle hole is smooth and round and blunt so as not to hurt the intraocular tissue; (2) the needle head is expanded at a certain position, so that the needle head can be conveniently clamped at the cornea side incision, and the needle head is not fallen off in the operation process. (3) The existing needle of the rear section perfusion tube is shortened by about 1/5, so that the needle is not easy to damage the crystal.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

an anterior ocular segment perfusion tube, characterized by: the infusion device comprises a transfer head connected with an infusion device, wherein a hose is fixedly connected to the transfer head, and a tube head is fixedly connected to the hose;

the pipe head comprises a pipe body with the same diameter as the hose, a needle head is fixedly connected below the pipe body, and a needle hole with an opening being an inclined plane is formed at the tail end of the needle head.

Further, a clamping block is arranged at the position of the needle close to the pipe body.

Further, the clamping block is two semicircular cavities protruding from the needle head.

Further, the middle rotary head is made of plastic, the hose is made of silica gel, and the tube head is made of metal.

Further, the length of the needle is 4/5 of the length of the existing back-section perfusion tube needle.

The beneficial effects of the utility model are as follows: compared with the prior art, the utility model has the advantages that,

(1) the needle hole at the tail end of the needle head used in the application is inclined and is a smooth and round inclined surface, so that the intraocular tissues (including cornea, iris and crystal) cannot be damaged.

(2) The position that this application syringe needle is close to the pipe shaft is equipped with can block the notched fixture block in cornea side, can block better in cornea side incision, can not make this perfusion tube drop at operation in-process.

(3) The length of the existing posterior segment perfusion tube needle head is shortened by about 1/5 as the length of the anterior segment perfusion tube needle head, so that the anterior segment perfusion tube needle head is not easy to damage crystals.

Drawings

FIG. 1 is a schematic diagram of the present utility model.

FIG. 2 is a schematic view of a tube head according to the present utility model.

Fig. 3 is an enlarged view of the portion a of the present utility model.

Fig. 4 is a pinhole schematic of the present utility model.

Wherein: 1. the pipe head, 2, the needle, 3, the hose, 4, the fixture block, 5, the pipe shaft, 6, the pinhole, 7, the well swivel.

Detailed Description

In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution of the present utility model is further described below with reference to the accompanying drawings and examples.

Referring to fig. 1-4, the application discloses an anterior ocular segment perfusion tube, which comprises a plastic transfer head 7 connected with an infusion apparatus, wherein the transfer head 7 is used for transferring liquid in the infusion apparatus into a silica gel hose 3 for conversion, the hose 3 is connected with the transfer head 7 in a nested manner, and a tube head 1 is connected with the hose 3 in a nested manner;

the tube head 1 is made of metal, the tube head 1 comprises a tube body 5 with the same diameter as that of a hose, the diameter of the tube body 5 is 25G, a needle head 2 is fixedly connected below the tube body 5, in view of the narrow anterior chamber space, the shape of the needle head 2 is an elliptic cylinder shape, the length of the needle head 2 is 2-2.5mm, the length of the needle head is 4/5 of the length of the existing posterior node perfusion tube needle head, crystals can be prevented from being damaged under the condition that the pupil is relatively large, the diameter of the needle head 2 is the diameter of the existing 25G posterior node perfusion tube needle head, the tail end of the needle head 2 is provided with a needle hole 6 with an opening being an inclined plane, the inclined angle of the inclined plane is 30 degrees, the needle hole is not as sharp as a common injector needle hole, but is a needle hole with smooth and round edges, and the needle hole 6 can not hurt eye tissues when the needle head 2 is inserted into a cornea side incision.

The needle head 2 is provided with a clamping block 4 which can be clamped at the incision on the cornea side near the tube body 5, the clamping block 4 is two semicircular cavities protruding on the needle head 2, the diameter of each semicircular cavity is 0.2mm, and the clamping block 4 is used for enabling the needle head 2 to be clamped at the incision on the cornea side, so that the needle head 2 cannot fall off in the operation process, and unnecessary trouble is caused to medical staff.

Examples

When the anterior ocular segment perfusion tube is used for anterior ocular segment perfusion, the transfer head 7 is connected with the infusion apparatus firstly, then the switch of the infusion apparatus is opened, so that the lactic acid ringer solution in the infusion apparatus flows through the hose 3 and the tube head 1, after the infusion is finished, the needle head 2 on the tube head 1 is inserted into the cornea side incision cut by the puncture knife, the clamping block 4 on the needle head 2 is clamped on the cornea side incision, and the needle hole 6 at the tail end of the needle head 2 is a smooth and unshaped inclined plane, so that the damage to the iris and the crystalline lens in the eye can not be caused after the needle head 2 is inserted into the cornea side incision.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (2)

1. An anterior ocular segment perfusion tube, characterized by: the infusion device comprises a transfer head (7) connected with an infusion device, wherein a hose (3) is connected to the transfer head (7), and a tube head (1) is connected to the hose (3);

the pipe head (1) comprises a pipe body (5) with the same diameter as the hose, a needle head (2) acting on the anterior ocular segment is connected below the pipe body (5), and a needle hole (6) with an opening being an inclined plane is formed at the tail end of the needle head (2);

a clamping block (4) is arranged at the position of the needle head (2) close to the pipe body (5);

the clamping block (4) is two semicircular cavities protruding from the needle head (2);

the length of the needle head (2) is 4/5 of the length of the existing back section perfusion tube needle head.

2. An anterior ocular segment perfusion tube as claimed in claim 1, wherein: the transfer head (7) is made of plastic, the hose (3) is made of silica gel, and the pipe head (1) is made of metal.