CN111529196B - Intraocular double-cavity injector with adjustable injection flow - Google Patents
Intraocular double-cavity injector with adjustable injection flow Download PDFInfo
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- CN111529196B CN111529196B CN202010571154.1A CN202010571154A CN111529196B CN 111529196 B CN111529196 B CN 111529196B CN 202010571154 A CN202010571154 A CN 202010571154A CN 111529196 B CN111529196 B CN 111529196B
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- injector
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- intraocular
- injection
- tube body
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- 238000002347 injection Methods 0.000 title claims abstract description 99
- 239000007924 injection Substances 0.000 title claims abstract description 99
- 239000007788 liquid Substances 0.000 claims abstract description 66
- 230000001105 regulatory effect Effects 0.000 claims abstract description 9
- 239000013013 elastic material Substances 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims description 5
- 231100000252 nontoxic Toxicity 0.000 claims description 3
- 230000003000 nontoxic effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000005452 bending Methods 0.000 claims 1
- 239000003814 drug Substances 0.000 abstract description 52
- 229940079593 drug Drugs 0.000 abstract description 30
- 238000001356 surgical procedure Methods 0.000 abstract description 7
- 230000001954 sterilising effect Effects 0.000 abstract description 2
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 2
- 210000005252 bulbus oculi Anatomy 0.000 description 25
- 210000003128 head Anatomy 0.000 description 20
- 238000000034 method Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000001508 eye Anatomy 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 210000004127 vitreous body Anatomy 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/0008—Introducing ophthalmic products into the ocular cavity or retaining products therein
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/0008—Introducing ophthalmic products into the ocular cavity or retaining products therein
- A61F9/0017—Introducing ophthalmic products into the ocular cavity or retaining products therein implantable in, or in contact with, the eye, e.g. ocular inserts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/0008—Introducing ophthalmic products into the ocular cavity or retaining products therein
- A61F9/0026—Ophthalmic product dispenser attachments to facilitate positioning near the eye
Landscapes
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention provides an intraocular double-cavity injector with adjustable injection flow, which comprises an injector tube body with a connector at the head and a needle seat with a needle, wherein the needle seat is detachably connected with the connector, and two mutually independent injection cavities with equal volume are arranged in the injector tube body; the heads of the two injection cavities are provided with liquid channels which are Y-shaped and are converged at the joint, and the liquid channels are provided with flow regulating devices; the tail part of the syringe tube body is provided with an inflating piston which is connected with the wave cutting machine. The intraocular double-cavity injector with adjustable injection flow has the advantages of simple and compact design structure, lower cost, easiness in sterilization, repeated use, cost saving, suitability for smaller ophthalmic operation space and convenience in use; the intraocular double-cavity injector with adjustable injection flow can simultaneously inject two liquid medicines with different injection amounts according to the demands of ophthalmic patients, and is worthy of application and popularization in ophthalmic surgery.
Description
Technical Field
The invention relates to the technical field of ophthalmic medical equipment, in particular to an intraocular double-cavity injector with adjustable injection flow.
Background
At present, most of syringes used at home and abroad are single-chamber syringes, which are only suitable for injecting one liquid medicine, but in ophthalmic surgery, two liquid medicines are required to be injected into eyeballs at the same time and mixed to become one medicine, and the mixed medicine acts in the eyeballs to treat ophthalmic diseases, so that the existing single-chamber syringes cannot be completed.
In the prior art, a three-way pipe is commonly used clinically to complete a treatment mode of injecting two medicaments simultaneously, but because the operation space of the ophthalmic operation is small, the operation is inconvenient, medical staff is inconvenient to control the injection pressure of an injector, and the three-way pipe has a limit in application in the ophthalmic operation; there are also some doctors that use two single syringe combinations to achieve simultaneous injection of two drugs, but in the course of surgery, pistons of two syringes need to be pushed simultaneously, the operation is inconvenient, and there are problems in that two liquid drugs cannot be injected in equal amounts due to inconsistent pushing pressures.
Disclosure of Invention
The invention provides an intraocular dual-cavity injector with adjustable injection flow, which solves the problem that a single-cavity injector in the prior art cannot simultaneously inject two liquid medicines into an eyeball.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The intraocular double-cavity injector with adjustable injection flow comprises an injector tube body with a connector at the head and a needle seat with a needle, wherein the needle seat is detachably connected with the connector, and two mutually independent injection cavities with equal volume are arranged in the injector tube body; the heads of the two injection cavities are provided with liquid channels which are converged at the joint in a Y shape;
the tail ends of the two injection cavities are respectively provided with a pushing piston with the cross section identical to that of the injection cavity, the center of the pushing piston is provided with a channel penetrating the pushing pistons, and a switching valve capable of being opened and closed is arranged in the channel;
The tail part of the syringe tube body is provided with an inflatable piston, and the inflatable piston comprises a round rubber plug matched with the diameter of the inner wall of the syringe tube body and an inflatable tube connected to the round rubber plug; the inflation tube is used for communicating the vitreous body cutting machine;
The two injection cavities contain different liquid medicines, the liquid medicines in the two injection cavities flow out of the two liquid channels respectively, the flowing liquid medicines are converged at the joint position of the syringe tube body in a Y shape, the problem that the existing syringe cannot meet the injection of the two liquid medicines is solved, the requirement that the two liquid medicines are injected into the eyeball at the same time and mixed to form a medicine in ophthalmic surgery is met, and the mixed medicine plays a role in the eyeball is met;
The inflation piston simultaneously inflates the two injection cavities in the injector tube body, the thrust force acts on the pushing piston, the pushing pressure of the pushing piston received by the two injection cavities is consistent, and the equal injection of the two liquid medicines in the two injection cavities is ensured.
Further, in order to prevent the inflation piston from pressurizing the inside of the syringe body too much and too fast during the injection process of the syringe, the circular rubber plug on the inflation piston is separated from the tail end of the syringe body; the outer wall of the tail part of the syringe body is provided with a clamping head; a clamping ring matched with the clamping head is arranged on the outer wall of the circular rubber plug; after the circular rubber plug is plugged into the tail part of the syringe body, the clamping head is connected with the clamping ring in a clamping way.
Further, in order to prevent the mixed liquid medicine at the joint from flowing back into the injection cavity through the liquid channels and avoid polluting the liquid medicine in the injection cavity, one-way valves are arranged in the two liquid channels.
Further, in order to facilitate filling of the liquid medicine in the injection cavity and prevent the liquid medicine in the two injection cavities from leaking from the tail ends of the injection cavities to cause mutual mixing of the liquid medicine; the pushing pistons are guaranteed to be guided accurately, guide rods are arranged at the centers of the two pistons, and a channel at the center of each piston penetrates through the guide rods and the pistons; cover plates with through holes at the center points are arranged at the tail parts of the two injection cavities, and the cover plates are detachably connected with the injection cavities; the guide rod is arranged in the through hole and can slide along the length direction of the through hole.
Preferably, in order to reduce the injection of air in the eyes by the injection cavity caused by the inclination of the injection cavity, the heads of the two injection cavities are in a truncated cone shape with small front and large back, and scale marks are arranged on the inner walls of the two injection cavities.
Further, in order to enable the injector to inject two liquid medicines with different proportions at the same time, a flow regulating device is arranged in the liquid channels of the two injection cavities, and the flow regulating device comprises a connecting rod, a handle and a ball valve with the same valve core diameter as the liquid channel; one end of the connecting rod passes through the syringe tube body to be connected with the valve core of the ball valve, and the other end of the connecting rod is positioned outside the syringe tube body and fixedly connected with the handle; the rotary handle can drive the valve core of the ball valve to rotate. The flow regulating device can change the diameter of the fluid circulation of the two liquid channels, so as to control the injection proportion of the injector for injecting two different liquid medicines.
Further, in order to prevent medical staff from being pricked by a needle head when using the syringe, a needle head seat is provided with a needle head sleeve, the length of the needle head sleeve is longer than that of the needle head, the needle head sleeve is of a thin-wall cylindrical structure, the tail part of the needle head sleeve is fixedly connected with the needle head seat, and the head part of the needle head sleeve is provided with an opening and the edge of the needle head sleeve is outwards bent in an arc shape; the needle sleeve is made of transparent elastic materials, when medical staff performs ophthalmic surgery, the needle is penetrated into the eyeball, the needle sleeve contacts the surface of the eyeball, the wall of the needle sleeve is compressed, and the head of the needle sleeve is everted, so that the strong inadaptation to the eyeball of a patient is avoided.
Further, in order to facilitate the judgment of the needle insertion depth by medical staff, the outer wall of the needle is provided with a bump, and the distance between the bump and the tip of the needle is 3.5mm.
Further, in order to fix the eyeball in the injection process of the injector, the injector further comprises a hemispherical shell-shaped eyeball fixer, wherein the eyeball fixer is provided with a small hole for the needle and the convex block to pass through, and the eyeball fixer is made of nontoxic transparent elastic materials.
Further, in order to facilitate the medical staff to hold the injector, a hand-held baffle is arranged at the position close to the head of the injector tube body, and the hand-held baffle is provided with radian matched with fingers.
The beneficial effects of the invention are as follows: the intraocular double-cavity injector with adjustable injection flow has the advantages of simple design structure, low cost, easy sterilization, repeated use, cost saving, compact structure, suitability for smaller ophthalmic operation space and very convenient use; the intraocular double-cavity injector with adjustable injection flow can simultaneously inject two liquid medicines with different injection amounts according to the demands of ophthalmic patients, thereby meeting the operation demands of the ophthalmic patients and being worthy of application and popularization in ophthalmic operations.
Drawings
Fig. 1 is a schematic diagram of an intraocular dual chamber injector with adjustable injection flow.
Fig. 2 is an enlarged schematic view of the structure of the check valve.
Fig. 3 is a schematic view of the rear view of the syringe body.
Fig. 4 is a schematic elevational view of an inflatable piston.
Fig. 5 is an enlarged schematic view of the push piston.
1, A syringe tube body; 2. a joint; 3. a needle; 4. needle seat; 5. an injection cavity; 6. a liquid channel; 7. an inflatable piston; 71. a circular rubber plug; 72. an inflation tube; 8. a chuck; 9. a clasp; 10. a one-way valve; 11. a cover plate; 12. a switch valve; 13. a flow rate adjusting device; 131. a ball valve; 132. a connecting rod; 133. a handle; 14. a needle cannula; 15. a bump; 16. an eyeball fixer; 17. a hand-held baffle; 18. pushing the piston; 19. a guide rod.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and all the inventions which make use of the inventive concept are protected by the spirit and scope of the present invention as defined and defined in the appended claims to those skilled in the art.
As shown in fig. 1 to 5, the intraocular dual-chamber injector with adjustable injection flow provided by the invention comprises an injector tube body 1 with a joint 2 at the head and a needle seat 4 with a needle 3, wherein the needle seat 4 is detachably connected with the joint 2.
The needle seat 4 is provided with a needle sleeve 14, the length of the needle sleeve 14 is larger than that of the needle 3, the needle sleeve 14 is of a thin-wall tubular structure, the tail part of the needle sleeve 14 is fixedly connected with the needle seat 4, the head part of the needle sleeve 14 is an opening, and the edge part of the needle sleeve 14 is in an outwards bent arc shape; the material of the needle sleeve 14 is transparent elastic material, when medical staff performs ophthalmic surgery, after the needle 3 pierces the eyeball, the needle sleeve 14 contacts the surface of the eyeball, the wall of the needle sleeve 14 is compressed, the head of the needle sleeve 14 is turned outwards, the eyeball of a patient cannot be strongly inadapted, and the needle sleeve 14 prevents the medical staff from being pricked by the needle when using the syringe.
The bump 15 is arranged on the outer wall of the needle, the distance between the bump 15 and the tip of the needle 3 is 3.5mm, and the judgment of the insertion depth of the needle 3 is convenient for medical staff.
The injector also comprises a hemispherical shell-shaped eyeball fixer 16, wherein the eyeball fixer 16 is provided with a small hole for a needle head and a lug 15 to pass through, and the eyeball fixer 16 is made of nontoxic transparent elastic material; a hand-held baffle 17 is arranged near the head of the injector tube body 1, and the hand-held baffle 17 is provided with radian matched with fingers; the eyeball is fixed in the injection process of the injector, and medical staff can conveniently hold the injector.
Two injection cavities 5 which are mutually and independently equal in volume are arranged in the injector tube body 1; the heads of the two injection cavities 5 are provided with liquid channels 6, and the two liquid channels 6 are converged at the joint 2 in a Y shape; the two injection cavities 5 contain different kinds of liquid medicines, the liquid medicines in the two injection cavities 5 flow out from the two liquid channels 6 respectively, the flowing liquid medicines are converged at the joint 2 of the syringe tube body 1 in a Y shape, the problem that the existing syringe cannot meet the injection of the two liquid medicines is solved, the requirement that the two liquid medicines are injected into the eyeball simultaneously and mixed to form a medicine in the ophthalmic surgery is met, and the mixed medicine plays a role in the eyeball is met.
The tail ends of the two injection cavities 5 are provided with pushing pistons 18 with the cross section identical to that of the injection cavities 5, the center of each pushing piston 18 is provided with a channel penetrating the pushing pistons, and the channels are internally provided with a switching valve 12 capable of being opened and closed; the switch valve 12 is opened when the liquid medicine is injected into the two injection cavities 5, and the switch valve 12 is closed when the piston 18 is pushed to start pushing medicine after the injection of the liquid medicine is completed; the switch valve 12 is arranged to facilitate filling of the liquid medicines in the injection cavity 5 and prevent the liquid medicines in the two injection cavities 5 from leaking from the tail ends of the injection cavities 5 to cause mutual mixing of the liquid medicines; the on-off valve 12 is closed to avoid that air enters the two injection chambers 5 during injection of the medicament by the syringe, resulting in mixing of the air and also the liquid medicament with each other.
The two liquid channels 6 are respectively provided with a one-way valve 10, so that the mixed liquid medicine at the joint 2 is prevented from flowing back into the injection cavity 5 through the liquid channels 6, and the pollution of the liquid medicine in the injection cavity 5 is avoided.
The centers of the two pistons 18 are provided with guide rods 19, and a channel at the center of each piston penetrates through the guide rods 19 and the pistons 18; cover plates 11 with through holes at the center points are arranged at the tail parts of the two injection cavities 5, and the cover plates 11 are detachably connected with the injection cavities 5; the guide rod 19 is disposed in the through hole, and the guide rod 19 can slide along the length direction of the through hole.
The tail part of the syringe tube body 1 is provided with an inflating piston 7, and the inflating piston 7 comprises a circular rubber plug 71 matched with the diameter of the inner wall of the syringe tube body 1 and an inflating tube 72 connected to the circular rubber plug 71; the air inflation tube 72 is used for communicating with the vitreous cutting machine; the inflation piston 7 simultaneously inflates the two injection cavities 5 in the injector tube body 1, the pushing piston 18 pushes the liquid medicines in the two injection cavities 5 simultaneously under the inflation effect of the inflation tube 72 on the section between the pushing piston 18 and the circular rubber plug 71, the pushing pressure born by the two injection cavities 5 is consistent, and the equal injection of the two liquid medicines in the two injection cavities 5 is ensured. After the injection of the liquid medicine in the injection cavity 5 is completed, the air-filled piston 7 sucks air, so that the air pressure of the pushing piston 18 and the end section of the cover plate 11 in the injection cavity 5 is smaller than the standard air pressure, and the pushing piston 18 returns to the initial position.
A flow regulating device 13 is arranged in the liquid channel 6 of the two injection cavities 5, and the flow regulating device 13 comprises a connecting rod 132, a handle 133 and a ball valve 131 with the same valve core diameter as the liquid channel 6; one end of the connecting rod 132 passes through the syringe tube 1 to be connected with the valve core of the ball valve 131, and the other end of the connecting rod is positioned outside the syringe tube 1 and fixedly connected with the handle 133; the rotary handle 133 can drive the valve core of the ball valve 131 to rotate. The flow regulating device 13 can change the diameter of the fluid circulation of the two liquid channels 6, so as to control the injection proportion of the injector for injecting two different liquid medicines.
The outer wall of the tail part of the syringe tube body 1 is provided with a clamping head 8; the outer wall of the circular rubber plug 71 is provided with a clamping ring 9 matched with the clamping head 8; after the circular rubber plug 71 is plugged into the tail of the syringe body 1, the clamping head 8 is in clamping connection with the clamping ring 9; the pneumatic piston 7 is prevented from pressurizing the inside of the syringe tube 1 too much and too fast, so that the round rubber plug 71 on the pneumatic piston 7 is separated from the tail end of the syringe tube 1.
The using method of the intraocular double-cavity injector with adjustable injection flow comprises the following steps:
the first step, plug the joint 2 of the head of the syringe tube 1;
A second step of changing the fluid flow diameters of the two liquid channels 6 by adjusting the flow adjusting device 13 according to the flow ratio of the two injected liquid medicines;
thirdly, two different liquid medicines are respectively injected into the two injection cavities 5 through the switch valve 12 at the tail part of the injection cavity 5, after the liquid medicines are filled, the switch valve 12 at the tail end of the injection cavity 5 is closed, the injector tube body 1 is inclined, and the superfluous overflowed liquid medicines at the tail end of the injection cavity 5 are poured;
Fourthly, sealing the round rubber plug 71 on the inflating piston 7 on the tail end of the syringe tube body 1, and connecting the inflating tube 72 on the inflating piston 7 with a glass body cutting machine, wherein the glass body cutting machine supplies air for the inflating tube 72;
fifthly, opening a joint 2 at the head of the syringe tube 1;
Step six, screwing the joint 2 at the head of the syringe tube 1 and the needle seat 4 with the needle;
Seventh, the eyeball holder 16 is used to hold the eyeball of the patient;
Eighth step, opening and setting the pushing pressure of the vitreous cutting machine; the pushing pressure drives the pushing piston 18, and the pushing piston 18 injects the liquid medicine in the injection cavity 5;
and ninth, medical staff use the injector to finish the operation of injecting different liquid medicines into eyeballs of patients.
Claims (9)
1. The intraocular double-cavity injector with adjustable injection flow comprises an injector tube body (1) with a joint (2) at the head and a needle seat (4) with a needle head (3), wherein the needle seat (4) is detachably connected with the joint (2), and the intraocular double-cavity injector is characterized in that two mutually independent injection cavities (5) with equal volumes are arranged in the injector tube body (1); the heads of the two injection cavities (5) are provided with liquid channels (6), and the two liquid channels (6) are converged at the joint in a Y shape; a flow regulating device (13) is arranged in the liquid channel (6) of the two injection cavities (5);
The tail ends of the two injection cavities (5) are provided with pushing pistons (18) with the cross section identical to that of the injection cavities (5), the center of each pushing piston (18) is provided with a channel penetrating through the pushing pistons, and the channels are internally provided with a switching valve (12) capable of being opened and closed;
the tail part of the syringe tube body (1) is provided with an inflating piston (7), and the inflating piston (7) comprises a circular rubber plug (71) matched with the diameter of the inner wall of the syringe tube body (1) and an inflating tube (72) connected to the circular rubber plug (71); the inflation tube (72) is used for communicating with a vitreous cutting machine;
the centers of the two pushing pistons (18) are provided with guide rods (19), and a channel at the center of each piston penetrates through the guide rods (19) and the pushing pistons (18);
Cover plates (11) with through holes at the center points are arranged at the tail parts of the two injection cavities (5), and the cover plates (11) are detachably connected with the injection cavities (5);
The guide rod (19) is arranged in the through hole and can slide along the length direction of the through hole.
2. The intraocular dual-cavity injector with adjustable injection flow according to claim 1, characterized in that a clamping head (8) is arranged on the outer wall of the tail part of the injector tube body (1); a clamping ring (9) matched with the clamping head (8) is arranged on the outer wall of the circular rubber plug (71); after the circular rubber plug (71) is plugged into the tail part of the syringe body (1), the clamping head (8) is connected with the clamping ring (9) in a clamping way.
3. The intraocular dual chamber injector with adjustable injection flow according to claim 1, characterized in that one non return valve (10) is provided in both liquid channels (6).
4. The intraocular dual-chamber injector with adjustable injection flow according to claim 1, wherein the heads of the two injection chambers (5) are in the shape of a truncated cone with a small front and a large rear, and the inner walls of the two injection chambers (5) are provided with scale marks.
5. The intraocular dual chamber injector with adjustable injection flow according to claim 1, characterized in that the flow regulating device (13) comprises a connecting rod (132), a handle (133) and a ball valve (131) with the same spool diameter as the liquid channel (6); one end of the connecting rod (132) penetrates through the syringe tube body (1) to be connected with the valve core of the ball valve (131), and the other end of the connecting rod is positioned outside the syringe tube body (1) and fixedly connected with the handle (133); the rotary handle (133) can drive the valve core of the ball valve (131) to rotate.
6. The intraocular dual-cavity injector with adjustable injection flow according to claim 1, characterized in that a needle sleeve (14) is arranged on the needle seat (4), the length of the needle sleeve (14) is larger than that of the needle (3), the needle sleeve (14) is of a thin-wall tubular structure, the tail part of the needle sleeve (14) is fixedly connected with the needle seat (4), the head part of the needle sleeve (14) is open, and the edge part of the needle sleeve is in an outwards bending arc shape; the material of the needle cannula (14) is a transparent elastic material.
7. The intraocular dual chamber injector with adjustable injection flow according to claim 6, characterized in that the outer wall of the needle (3) is provided with a projection (15), the projection (15) being 3.5mm from the tip of the needle (3).
8. The intraocular dual chamber injector with adjustable injection flow according to claim 7, further comprising a hemispherical shell-shaped eye holder (16), wherein the eye holder (16) is provided with a small hole for the needle and the bump to pass through, and the eye holder (16) is made of nontoxic transparent elastic material.
9. The intraocular dual-chamber injector with adjustable injection flow according to claim 1, characterized in that a hand-held baffle (17) is arranged near the head of the injector tube body (1), and the hand-held baffle (17) is provided with an arc matched with fingers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010571154.1A CN111529196B (en) | 2020-06-22 | 2020-06-22 | Intraocular double-cavity injector with adjustable injection flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010571154.1A CN111529196B (en) | 2020-06-22 | 2020-06-22 | Intraocular double-cavity injector with adjustable injection flow |
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| Publication Number | Publication Date |
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| CN111529196A CN111529196A (en) | 2020-08-14 |
| CN111529196B true CN111529196B (en) | 2024-07-19 |
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| CN113274294B (en) * | 2021-05-25 | 2022-07-05 | 四川大学华西医院 | Gastrointestinal digestive juice and nutrient solution mixed input connector |
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| CN110538363A (en) * | 2019-09-27 | 2019-12-06 | 四川大学华西医院 | diluted injection type rescue syringe |
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| US20040064102A1 (en) * | 2002-09-30 | 2004-04-01 | Akira Yamada | Double-barrel syringe for ophthalmic surgeries |
| CN201612906U (en) * | 2010-03-16 | 2010-10-27 | 赵云 | One-tube two-liquid syringe |
| US20190105197A1 (en) * | 2017-10-05 | 2019-04-11 | Novartis Ag | Devices and methods for injection beneath eye tissue |
| KR102107578B1 (en) * | 2018-05-02 | 2020-05-07 | 주식회사 피테크 | Constant velocity infusion device for painless syringe and painless sylinge having the same |
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| KR20190105558A (en) * | 2019-09-06 | 2019-09-17 | 이미행 | Injector for animal |
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| CN201572390U (en) * | 2009-12-28 | 2010-09-08 | 中国人民解放军南京军区杭州疗养院海勤疗养区 | Rotary multi-cavity injector |
| CN110538363A (en) * | 2019-09-27 | 2019-12-06 | 四川大学华西医院 | diluted injection type rescue syringe |
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