CN216985375U

CN216985375U - Ophthalmic silicone oil takes out and uses syringe

Info

Publication number: CN216985375U
Application number: CN202122709328.9U
Authority: CN
Inventors: 林英; 蔡晨希
Original assignee: Zhongshan Ophthalmic Center
Current assignee: Zhongshan Ophthalmic Center
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-07-19
Anticipated expiration: 2031-11-05

Abstract

The utility model relates to the technical field of ophthalmic surgical instruments, in particular to an injector for taking out ophthalmic silicone oil, which comprises a needle cylinder, a piston rod, a piston and a clamping plate, wherein a suction pipe connecting part is arranged at one end of the needle cylinder, a handle flange is arranged at the other end of the needle cylinder, the clamping plate is rotatably connected to the upper end of the handle flange, the piston is arranged in the needle cylinder, the end part of the piston rod is connected with the piston, a plurality of clamping grooves are formed in the piston rod at axial intervals, and a doctor rotates the clamping plate to insert the clamping plate into the clamping grooves after driving the piston rod to move to a specified distance, so that the piston rod is fixed, the position between the piston and the needle cylinder is kept fixed, and after silicone oil is sucked, the clamping plate is rotated again to be separated from the clamping grooves, so that the silicone oil in the needle cylinder can be discharged; therefore, the ophthalmic silicone oil taking-out injector can complete pumping operation by only one person, and has the advantages of simple operation and low labor intensity.

Description

Ophthalmic silicone oil takes out and uses syringe

Technical Field

The utility model relates to the technical field of ophthalmic surgical instruments, in particular to an injector for taking out ophthalmic silicone oil.

Background

Since Paul Cibis in 1962 firstly injects silicone oil as a vitreous substitute into eyes to treat serious proliferative vitreoretinopathy patients who do not want to be cured in conventional operations, the silicone oil is widely applied to the treatment of complex vitreous body and retinopathy, so that the success rate of operations of vitreoretinopathy, giant fissure retinal detachment, traumatic vitreoretinopathy, proliferative diabetic retinopathy and other complex retinal detachment is greatly improved, but the silicone oil can cause more complications such as glaucoma, cataract, keratopathy and the like, and therefore the silicone oil needs to be taken out at proper time after the retinal detachment is reset and the fissure is closed.

At present, a syringe and vessel forceps are needed in the silicone oil extraction operation, a main doctor uses a piston rod of the syringe to drive a piston in the syringe to move, negative pressure is formed in a needle cylinder of the syringe, then an assistant holds the vessel forceps to clamp the piston rod so that the position between the piston and the needle cylinder is kept fixed, stable negative pressure is formed in the needle cylinder, and therefore silicone oil is sucked out.

However, at least two persons are needed for cooperation operation of suction of the syringe and fixation of the vascular clamp, the requirement on operation cooperation of the main knife and the assistant is high, and the assistant is required to clamp the piston rod of the syringe all the time in the silicone oil suction process, so that the labor intensity is high.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: when the ophthalmic silicone oil is taken out, at least two persons are needed for matching operation of suction of the needle cylinder and fixation of the vascular forceps, the requirement on operation matching of the main knife and the assistant is high, the assistant is required to clamp the piston rod of the syringe all the time in the silicone oil suction process, and the labor intensity is high.

In order to solve the technical problem, the utility model provides an injector for taking out ophthalmic silicone oil, which comprises a needle cylinder, a piston rod, a piston and a clamping plate, wherein a straw connecting part is arranged at one end of the needle cylinder, a handle flange is arranged at the other end of the needle cylinder, the clamping plate is rotatably connected to the upper end of the handle flange, the piston is arranged in the needle cylinder, the end part of the piston rod is connected with the piston, a clamping groove is axially arranged on the piston rod, and the clamping plate can be inserted into the clamping groove or can be separated from the clamping groove by rotating the clamping plate.

Preferably, the clamping grooves are arranged at intervals along the axial direction of the piston rod.

As a preferred scheme, the clamping plate is a circular plate, the lower end of the clamping plate is fixedly connected with a rotating shaft, and the rotating shaft and the clamping plate are eccentrically arranged;

the handle flange is provided with a mounting hole matched with the rotating shaft.

Preferably, the upper end of the clamping plate is provided with a protruding part, and when the clamping plate is inserted into the clamping groove, the protruding part is located between the rotating shaft and the piston rod.

Preferably, the convex part is a cylinder.

Preferably, the end of the rotating shaft passes through the mounting hole and is in threaded connection with an end cap.

Preferably, the first end of the piston rod is connected to the piston, and the second end of the piston rod is provided with an annular flange.

As a preferred scheme, the needle cylinder, the piston rod and the clamping plate are all made of PP materials.

Compared with the prior art, the utility model has the beneficial effects that: the upper end of the handle flange is rotatably connected with a clamping plate, a plurality of clamping grooves are formed in the piston rod at intervals in the axial direction, after a doctor drives the piston to move to a specified distance by using the piston rod, the clamping plate can be inserted into the clamping grooves by rotating the clamping plate, so that the piston rod is fixed, the position between the piston and the needle cylinder is kept fixed, and after the silicone oil is completely sucked, the clamping plate is rotated again to be separated from the clamping grooves, so that the silicone oil in the needle cylinder is discharged; therefore, the ophthalmic silicone oil taking-out injector can complete pumping operation by only one person, and has the advantages of simple operation and low labor intensity.

Drawings

FIG. 1 is a sectional view of an ophthalmic silicone oil removing syringe;

FIG. 2 is an isometric view of an ophthalmic silicone oil removal syringe;

in the figure, 1, a syringe; 11. a straw connecting part; 12. a handle flange; 2. a piston rod; 21. a card slot; 22. an annular flange; 3. clamping a plate; 31. a rotating shaft; 32. a boss portion; 33. an end cap; 4. a piston; 5. a sleeve.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model, but are not intended to limit the scope of the utility model.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.

As shown in fig. 1 and 2, the ophthalmic silicone oil extracting syringe of the present invention includes a needle cylinder 1, a piston rod 2, a piston 4, and a clamping plate 3, wherein one end of the needle cylinder 1 is provided with a straw connecting portion 11, the other end of the needle cylinder 1 is provided with a handle flange 12, the clamping plate 3 is rotatably connected to the upper end of the handle flange 12, the piston is disposed in the needle cylinder, the end of the piston rod is connected to the piston, a plurality of clamping grooves 21 are axially spaced on the piston rod 2, and the clamping plate 3 can be inserted into the clamping grooves 21 by rotating the clamping plate 3, or the clamping plate 3 can be removed from the clamping grooves 21.

During the use, be connected to the sleeve pipe 5 of operation incision position with straw connecting portion 11, the doctor of main knife uses piston rod 2 to drive piston 4 and moves to the assigned distance after, rotates cardboard 3 and can make cardboard 3 insert in draw-in groove 21 to fixed piston rod 2 makes the position keep fixed between piston 4 and the cylinder 1, and after the silicon oil suction finished, rotates cardboard 3 once more, makes cardboard 3 deviate from draw-in groove 21, can follow the silicon oil and discharge in the syringe. Therefore, the ophthalmic silicone oil taking-out syringe of the embodiment can complete the pumping operation by only one person, and has the advantages of simple operation and low labor intensity.

A plurality of clamping grooves 21 are arranged at intervals along the axial direction of the piston rod 2, the clamping plate 3 is a circular plate, the lower end of the clamping plate 3 is fixedly connected with a rotating shaft 31, and the rotating shaft 31 and the clamping plate 3 are eccentrically arranged; the handle flange 12 is provided with a mounting hole matching with the rotation shaft 31. Because pivot 31 and cardboard 3 eccentric arrangement, revolve pivot 31 and rotate cardboard 3 and can make cardboard 3 insert or deviate from draw-in groove 21 with the far away side of pivot 31 distance, convenient to use more.

In this embodiment, the upper end of the clamping plate 3 is provided with a protruding portion 32, and when the clamping plate 3 is inserted into the slot, the protruding portion 32 is located between the rotating shaft 31 and the piston rod 2. The doctor rotates the clamping plate 3 through the convex part 32, and the operation is more convenient. Specifically, the boss 32 is a cylinder. The clamping plate 3 is convenient to process and manufacture, and the manufacturing cost is reduced.

Further, in order to prevent the rotating shaft 31 from being removed from the mounting hole of the handle flange 12, an external thread is provided at the end of the rotating shaft 31, and the end of the rotating shaft 31 passes through the mounting hole and is threadedly connected to the end cap 33.

In this embodiment, a first end of the piston rod 2 is connected to the piston 4, and a second end of the piston rod 2 is provided with an annular flange 22. The needle cylinder 1, the piston rod 2 and the clamping plate 3 are all made of PP materials.

In this embodiment, the syringe 1 has a size of 10ml, four slots 21 are provided, and the four slots 21 are provided at positions corresponding to positions of the piston 4 of 4ml, 6ml, 8ml and 10ml, respectively.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an ophthalmology silicone oil takes out and uses syringe which characterized in that, includes cylinder (1), piston rod (2), piston (4), cardboard (3), the one end of cylinder (1) is equipped with straw connecting portion (11), the other end of cylinder (1) is equipped with handle flange (12), cardboard (3) rotate to be connected the upper end of handle flange (12), piston (4) set up in cylinder (1), the end connection of piston rod (2) piston (4), the axial interval of piston rod (2) is equipped with draw-in groove (21), rotates cardboard (3) can make cardboard (3) insert draw-in groove (21), or make cardboard (3) follow deviate from in draw-in groove (21).

2. Ophthalmic silicone oil extracting syringe according to claim 1, wherein the plurality of the engaging grooves (21) are provided at intervals in the axial direction of the piston rod (2).

3. The ophthalmic silicone oil taking-out syringe according to claim 1, wherein the clamping plate (3) is a circular plate, a rotating shaft (31) is fixedly connected to the lower end of the clamping plate (3), and the rotating shaft (31) and the clamping plate (3) are eccentrically arranged;

the handle flange (12) is provided with a mounting hole matched with the rotating shaft (31).

4. The ophthalmic silicone oil extracting syringe according to claim 3, wherein the upper end of the clamping plate (3) is provided with a protrusion (32), and when the clamping plate (3) is inserted into the clamping groove (21), the protrusion (32) is located between the rotating shaft (31) and the piston rod (2).

5. Ophthalmic silicone oil extraction syringe according to claim 4, characterized in that the boss (32) is a cylinder.

6. Ophthalmic silicone oil extraction syringe according to claim 3, characterized in that the end of the rotating shaft (31) passes through the mounting hole and is screwed with an end cap (33).

7. Ophthalmic silicone oil extraction syringe according to claim 1, characterized in that the first end of the piston rod (2) is connected to the piston (4) and the second end of the piston rod (2) is provided with an annular flange (22).

8. The ophthalmic silicone oil extracting syringe according to claim 1, wherein the syringe (1), the piston rod (2), and the chuck plate (3) are made of PP material.