CN209422231U - A capsule separation needle - Google Patents

Abstract

The utility model relates to the field of medical instrument technology, especially a kind of pouch Separated pin, including the first syringe, second syringe, liquid-dividing head, injection head, second syringe covers inside the first syringe, the first syringe bottom center is fixed with needle tubing, piston is equipped in second syringe, piston rod is fixedly connected on the piston, pintle is cased on the output end of second syringe bottom, the pintle is fixedly connected with needle stalk, needle stalk end is movably installed with liquid-dividing head, in the needle stalk insertion needle tubing, liquid storage chamber is equipped with inside the liquid-dividing head, the liquid-dividing head bottom, which is inclined outwardly, is equipped with injection head, infusion road is equipped in the liquid-dividing head, the infusion road being connected with liquid storage chamber is equipped with inside the injection head, first syringe, second syringe, the end of piston rod is respectively equipped with the first push plate, second push plate, Third push plate.The utility model has structure simple, can inject viscoelastic agent, the fast advantage of diffusion velocity after injection to different directions.

Description

A capsule separation needle

technical field

The utility model relates to the technical field of medical instruments, in particular to a pouch separation needle.

Background technique

The viscoelastic agent is a colorless transparent gel-like solution composed of high-purity sodium hyaluronate and physiological buffer balance salt. Its main function is for clinicians to use it as a surgical pad for ophthalmic microsurgery, to temporarily support the surgical space, to protect the tissue from mechanical damage by surgical instruments, and to facilitate the smooth implementation of surgery. It is mainly applicable to intraocular lens implantation and removal, intracapsular and extracapsular cataract extraction, phacoemulsification, glaucoma surgery and ophthalmic surgery.

Since Ridley, a famous British ophthalmologist, found a suitable intraocular lens material and implanted the first hard intraocular lens in 1949, five generations of intraocular lenses have come out. The fourth-generation posterior chamber intraocular lens can be implanted in the capsular bag, and the pupil can be dilated after operation, which is convenient for fundus inspection. The fifth-generation foldable intraocular lens can be implanted through a small incision, has little contact damage with the corneal endothelium, is light in weight, and can restore stable vision in a short period of time after surgery. It has always been the dream of ophthalmologists to manufacture the intraocular lens that is closest to the physiological state and has the adjustment function. At present, multifocal intraocular lenses, adjustable intraocular lenses, and Toric intraocular lenses that can correct astigmatism have been developed.

Before IOL implantation, viscoelastic agent needs to be injected into the capsule to fill the anterior chamber and deepen the capsular bag of the lens, so as to provide a good view for intraocular tissue manipulation and IOL implantation. The existing needles for injecting viscoelastic have uneven injection, and the diffusion speed of viscoelastic after injection is slow, which slows down the operation speed.

Utility model content

The purpose of the utility model is to solve the disadvantage of uneven injection in the prior art, and propose a capsule separation needle.

In order to achieve the above object, the utility model adopts the following technical solutions:

A pouch separation needle is designed, which includes a first syringe, a second syringe, a liquid dispenser, and an injection head. The second syringe is set inside the first syringe, and the center of the bottom of the first syringe is fixed. There is a needle tube, the second syringe is provided with a piston, the piston is fixedly connected with a piston rod, the output end of the bottom of the second syringe is covered with a needle plug, and the needle plug is fixedly connected with a needle stem. A dispensing head is movably installed at the end of the needle stem, and the needle stem is inserted into the needle tube. A liquid storage cavity is arranged inside the liquid dispensing head, and several injection heads are installed on the bottom of the liquid dispensing head inclined to the outside. An infusion channel connected with the liquid storage cavity is arranged inside.

Preferably, the injection head is an elastic material injection head, and the number of the injection heads is at least two.

Preferably, a first push plate, a second push plate, and a third push plate are respectively provided at the end of the first syringe, the second syringe, and the piston rod.

Preferably, both the needle tube and the end of the injection head are treated in an arc shape.

Preferably, a ventilation hole is provided at the lower part of the first syringe body close to the needle tube.

The utility model proposes a pouch separation needle, which has the beneficial effects that: by setting the second syringe sleeved on the first syringe, the push plate can be used to push the second syringe to move toward the first syringe; The arc-shaped needle tube and the end of the injection head can prevent the needle tube and the end of the injection head from injuring the patient's eye tissue; by setting the needle stem inserted in the needle tube, the needle stem can follow the second needle barrel when the second needle cylinder moves to the first needle cylinder. The needle barrel moves in the needle tube; by setting the elastic material injection head obliquely installed on the liquid dispenser, the viscoelastic can be injected in different directions when injecting.

Description of drawings

Fig. 1 is the schematic diagram when the injection head of a kind of pouch separation needle proposed by the utility model is retracted;

Fig. 2 is a schematic diagram when the injection head of a bag separation needle proposed by the utility model is pushed out;

Fig. 3 is a schematic diagram of a dispensing head and an injection head of a pouch separation needle proposed by the utility model.

In the figure: piston rod 1, second syringe 2, first syringe 3, piston 4, needle plug 5, needle stem 6, needle tube 7, liquid dispenser 8, liquid storage cavity 81, injection head 9, infusion channel 91 , Push pedal 10, first push pedal 101, second push pedal 102, third push pedal 103.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example.

Referring to Figures 1-3, a pouch separation needle is designed, including a first syringe 3, a second syringe 2, a liquid dispensing head 8, and an injection head 9. The second syringe 2 is set inside the first syringe 3, The center of the bottom of the first syringe 3 is fixed with a needle tube 7, the second syringe 2 is provided with a piston 4, the piston 4 is fixedly connected with the piston rod 1, the first syringe 3, the second syringe 2, and the piston rod 1 The ends are respectively provided with a first push plate 101 , a second push plate 102 and a third push plate 103 , and the push plate 10 is used to push the second syringe 2 and the piston 4 connected to the piston rod 1 to move.

The needle plug 5 is sheathed on the output end of the bottom of the second syringe 2, the needle plug 5 is fixedly connected with the needle stem 6, and the end of the needle stem 6 is movably installed with a liquid dispenser 8, the needle stem 6 is inserted into the needle tube 7, and the inside of the liquid dispenser 8 There is a liquid storage chamber 81, and several injection heads 9 are installed on the bottom of the liquid dispensing head 8 inclined to the outside. The inclined installation can make the injection heads 9 inject in different directions. Road 91, the injection head 9 is an injection head of elastic material, and the elastic material can make the injection head 9 close to the middle when it is located in the needle tube 7, the number of injection heads 9 is at least two, and the ends of the needle tube 7 and the injection head 9 are all treated in an arc shape , the arc-shaped treatment can prevent the needle tube 7 and the end of the injection head 9 from injuring the patient's eye tissue, and the lower part of the cylinder body of the first syringe 3 is provided with a vent hole near the needle tube 7, which is used to discharge the first syringe when the second syringe 2 moves. 3 The air inside is exhausted.

When the utility model is in use, after the lens implantation operation is performed, after the needle tube 7 is inserted into the capsule, the second needle cylinder 2 is pushed to move slowly toward the first needle cylinder 3 through the second push plate 102, thereby driving the second needle cylinder 2. The needle stem 6 at the bottom is slowly pushed out along the needle tube 7, and the injection head 9 is an injection head made of elastic material, which is gathered toward the middle when it is inside the needle tube 7. When the injection head 9 is slowly pushed out from the needle tube 7, it is installed obliquely on the liquid dispenser The injection head 9 slowly expands around. After the expansion is completed, the third push plate 103 pushes the piston 4 connected to the piston rod 1 to move towards the needle tube 7. Inject in different directions in the sac. After the injection is completed, use the second push plate 102 to move the second syringe 2 to the initial position, retract the injection head 9, and then pull the needle tube 7 out of the sac.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Any equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (5)

1. a sac bag separation needle, comprising a first syringe (3), a second syringe (2), a liquid dispenser (8), an injection head (9), it is characterized in that the second syringe ( 2) Set inside the first syringe (3), the needle tube (7) is fixed in the center of the bottom of the first syringe (3), and the second syringe (2) is provided with a piston (4), so The piston (4) is fixedly connected with a piston rod (1), and the output end of the bottom of the second syringe (2) is covered with a needle plug (5), and the needle plug (5) is fixedly connected with a needle stem (6 ), the end of the needle barrel (6) is movably equipped with a liquid dispenser (8), the needle barrel (6) is inserted into the needle tube (7), and the inside of the liquid dispenser (8) is provided with a liquid storage cavity (81 ), the bottom of the dispensing head (8) is equipped with a number of injection heads (9) inclined outwards, and the inside of the injection head (9) is provided with an infusion channel (91) communicating with the liquid storage chamber (81). 2 . The capsule separation needle according to claim 1 , characterized in that, the injection head ( 9 ) is an elastic material injection head, and the number of the injection heads ( 9 ) is at least two. 3 . 3. A pouch separation needle according to claim 1, characterized in that, the ends of the first syringe (3), the second syringe (2), and the piston rod (1) are respectively provided with a second A push pedal (101), a second push pedal (102), and a third push pedal (103). 4. A capsule separation needle according to claim 1, characterized in that the ends of the needle tube (7) and the injection head (9) are all treated in an arc shape. 5 . The pouch separation needle according to claim 1 , characterized in that, a ventilation hole is provided at the lower part of the cylinder body of the first syringe ( 3 ) close to the needle tube ( 7 ). 6 .