A retinal syringe

Abstract

The present invention discloses a retinal syringe comprising a housing; a telescopic sleeve that is telescopically mounted on the housing; a positioning assembly for defining the telescopic sleeve's telescopic position; a linkage plate that is telescopically mounted within the housing; and a syringe body that is detachably mounted on the linkage plate. The linkage plate is capable of partially moving the syringe body out of the telescopic sleeve and, in conjunction with the telescopic sleeve, expelling medication from the syringe body. This arrangement allows the syringe body to be inserted into the eye to an appropriate depth, and the medication in the syringe body can be stably injected into the eye.

Description

Technical Field

[0001] The present invention relates to the technical field of syringes, in particular to a retinal syringe. Background Art

[0002] Retinal degenerative diseases are the main cause of irreversible blinding eye diseases, which mainly include age-related macular degeneration, retinitis pigmentosa, Stargardt disease, etc.; as a medical treatment for retinal diseases, it is usually necessary to inject symptomatic drugs into the retina for treatment. In the existing technology, when performing intraocular injection surgery, the doctor needs to manually insert the needle into the appropriate position of the retina and administer the medicine. The above method requires extremely high surgical standards of the doctor. The doctor can only rely on accumulated experience to perform eye injections. Not only is it difficult to control the depth of the needle inserted into the eye, but the process of injecting the medicine into the eye is also quite laborious, resulting in a low success rate of eye injections. Therefore, how to design a syringe that can accurately control the depth of needle insertion and stably inject the medicine is a technical problem that we need to solve. Summary of the Invention

[0003] In view of the shortcomings of the above technologies, the present invention provides a retinal syringe.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A retinal syringe comprises: a shell having a cavity formed therein and an inlet connected to the cavity; a telescopic sleeve telescopically arranged on the shell; a positioning assembly for limiting the telescopic position of the telescopic sleeve; a linkage plate telescopically arranged in the cavity; and a syringe body detachably arranged on the linkage plate, wherein a medicine is stored; wherein the linkage plate is capable of moving part of the syringe body out of the telescopic sleeve and can cooperate with the telescopic sleeve to press out the medicine in the syringe body.

[0006] Preferably, a limiting groove is provided on the syringe body, and an arm is provided on the linkage plate; the arm can be inserted into the limiting groove to limit the syringe body along the length direction of the shell.

[0007] Preferably, the retinal injector also includes a transmission assembly for driving a linkage plate; the transmission assembly includes a roller rotatably arranged in the housing; a steel belt that can be wound on the roller; and a power transmission structure for releasing or retracting the steel belt on the roller; wherein the linkage plate is fixed to one end of the steel belt.

[0008] Preferably, the power transmission structure includes a steel belt drive roller rotatably arranged in the outer shell, and a number of toggle protrusions are evenly arranged on the outer circumference of which; a worm gear is coaxially arranged with the steel belt drive roller and rotates synchronously; and a telescopic drive motor fixed on the outer shell, and a worm connected to the worm gear is arranged on its output shaft; wherein, a number of toggle holes are evenly opened on the steel belt; when the steel belt drive roller rotates, the toggle protrusions can be inserted into the number of toggle holes one by one to link the steel belt to be released or retracted from the roller.

[0009] Preferably, the syringe body includes a linked outer sleeve with a cavity formed therein; a piston fixed in the cavity; and a syringe telescopically arranged in the cavity, in which the medicine is stored; wherein the end of the syringe is provided with a hollow boss for mounting a needle; and the piston is inserted into the syringe.

[0010] Preferably, the limiting groove is arranged on the linkage sleeve; a sleeve end cover is detachably fixed to one end of the linkage sleeve, and the piston is arranged on the sleeve end cover through a piston rod; wherein the piston rod and the sleeve end cover are integrally formed as a whole.

[0011] Preferably, a sheath for protecting the needle is slidably configured on the linkage jacket; a first hook groove is configured on the linkage jacket, and a first hook block that can abut against the end of the first hook groove is configured on the sheath to prevent the linkage jacket from falling out of the sheath; wherein, a hollow cone is formed at one end of the sheath, which can enable the needle to protrude from the sheath and can confine the syringe within the sheath.

[0012] Preferably, the telescopic sleeve is provided with a second hook groove, and the housing is provided with a second hook block capable of abutting against the end of the second hook groove.

[0013] Preferably, the sheath can be inserted into the telescopic sleeve; wherein, the sheath is provided with a third hook groove, and the telescopic sleeve is provided with a third hook block capable of abutting against the end of the third hook groove.

[0014] Preferably, the positioning assembly includes a telescopic driver fixedly arranged on the housing, on which a telescopic shaft is provided; and a positioning block connected to the end of the telescopic shaft; wherein, the telescopic sleeve is provided with a plurality of positioning recesses, and the positioning block can be inserted into any positioning recess.

[0015] Compared with the prior art, the present invention has the following advantages: the retinal syringe provided by the present invention can gradually insert the needle on the syringe body into the eye under the telescopic action of the linkage plate, and can control the depth of the needle insertion into the eye under the joint action of the telescopic sleeve and the positioning assembly. When the syringe body reaches the appropriate depth of insertion into the eye, the linkage plate can continue to push the syringe body; in this way, the medicine in the syringe body can be stably injected into the eye. The present application has a high degree of automation and can completely replace the doctor's manual operation. It can not only accurately control the depth of the needle insertion into the eye, but also ensure the stability of the medicine injection process, thereby greatly improving the success rate of eye injections. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of the retinal injector in the present invention in standby mode;

[0017] Figure 2 This is a schematic diagram of the structure of the retinal injector in the injection state of the present invention;

[0018] Figure 3 Schematic diagram of the internal structure of the retinal syringe of the present invention;

[0019] Figure 4 It is a structural schematic diagram of the transmission assembly in the present invention;

[0020] Figure 5 Schematic diagram of the connection between the syringe body and the linkage plate in the present invention;

[0021] Figure 6 Schematic diagram of the exploded structure of the syringe body in the present invention;

[0022] Figure 7 It is a structural schematic diagram of the positioning component in the present invention. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0024] like Figure 1 — Figure 7 As shown, the present invention provides a retinal injector, comprising:

[0025] A housing 1 having a cavity (not shown) formed therein, and an inlet 100 communicating with the cavity is disposed on the housing 1;

[0026] a telescopic sleeve 11, which is telescopically arranged on the housing 1;

[0027] A positioning assembly 9 for limiting the telescopic position of the telescopic sleeve 11;

[0028] a linkage plate 55 , which is telescopically disposed in the cavity; and

[0029] A syringe body 7 detachably disposed on the linkage plate 55 , wherein medicine is stored;

[0030] The linkage plate 55 can move a portion of the syringe body 7 out of the telescopic sleeve 11 , and can cooperate with the telescopic sleeve 11 to press out the medicine in the syringe body 7 .

[0031] It is understood that the syringe body 7 can be mounted on the linkage plate 55 through the inlet 100 ; under the action of the transmission assembly 5 , the linkage plate 55 can move the syringe body 7 out of the telescopic sleeve 11 ;

[0032] Among them, the telescopic sleeve 11 can limit the head position of the syringe body 7 so as to move synchronously with the syringe body 7. When the syringe body 7 reaches the appropriate depth of insertion into the eye, the positioning assembly 9 can fix the position of the telescopic sleeve 11; thereafter, the linkage plate 55 continues to extend forward to cooperate with the telescopic sleeve 11 to squeeze the syringe body 7 until the medicine is discharged.

[0033] Furthermore, the housing 1 is composed of an upper housing and a lower housing that are detachably connected; a fixed sleeve 10 is disposed on the housing 1 , and the telescopic sleeve 11 is telescopically disposed in the fixed sleeve 10 .

[0034] In the present application, a limiting groove 711 is provided on the syringe body 7, and an arm 551 is provided on the linkage plate 55; the arm 551 can be inserted into the limiting groove 711 to limit the syringe body 7 along the length direction of the shell 1.

[0035] As an embodiment of the present invention, the transmission assembly 5 includes

[0036] Rotating the roller 54 disposed in the housing 1;

[0037] A steel strip 56 capable of being wound on the winding roller 54; and

[0038] a power transmission structure for paying out or retrieving the steel strip 56 on the winding roller 54;

[0039] The linkage plate 55 is fixed to one end of the steel belt 56 .

[0040] Specifically, the power transmission structure includes

[0041] A steel belt driving roller 53 is rotatably provided in the housing 1, and a plurality of driving protrusions 531 are evenly arranged on the periphery thereof;

[0042] a worm gear 52 coaxially arranged with the steel belt drive roller 53 and rotating synchronously; and

[0043] The telescopic drive motor 50 is fixed to the housing 1, and the output shaft thereof is provided with a worm 51 which is in transmission connection with the worm gear 52;

[0044] Among them, a number of shifting holes 560 are evenly opened on the steel belt 56; when the steel belt driving roller 53 rotates, the shifting protrusions 531 can be inserted into the plurality of shifting holes 560 one by one to link the steel belt 56 to be released or retracted from the winding roller 54.

[0045] As an embodiment of the present invention, the syringe body 7 includes

[0046] The linkage outer sleeve 71 has a cavity 712 formed therein;

[0047] A piston 72 fixed in the cavity 712; and

[0048] a syringe 74 telescopically disposed in the cavity 712 , wherein the medicine is stored;

[0049] The end of the syringe 74 is provided with a hollow boss 741 for mounting the needle 75 ; the piston 72 is inserted into the syringe 74 so that when the syringe 74 is retracted into the linkage sleeve 71 , the piston 72 can discharge the medicine.

[0050] Specifically, the limiting groove 711 is configured on the linkage sleeve 71 .

[0051] Furthermore, a jacket end cover 721 is detachably fixed to one end of the linkage jacket 71, and the piston 72 is arranged on the jacket end cover 721 through a piston rod (not shown in the figure); wherein the piston rod and the jacket end cover 721 are integrally formed as a whole.

[0052] As an embodiment of the present invention, a sheath 73 for protecting the needle 75 is slidably disposed on the linkage housing 71;

[0053] A sheath return spring (not shown) is connected between the sheath 73 and the linkage outer sleeve 71. The sheath return spring allows the sheath 73 and the linkage outer sleeve 71 to have a movement tendency to separate from each other, thereby protecting the needle 75 to the greatest extent.

[0054] The linkage sleeve 71 is provided with a first hooking groove 713 , and the sheath 73 is provided with a first hook block 731 capable of abutting against an end of the first hooking groove 713 to prevent the linkage sleeve 71 from falling out of the sheath 73 ;

[0055] A hollow frustum 732 is formed at one end of the sheath 73 , which enables the needle 75 to protrude from the sheath 73 and confines the syringe 74 within the sheath 73 .

[0056] Furthermore, the telescopic sleeve 11 is provided with a second hook groove 110, and the housing 1 is provided with a second hook block 101 capable of abutting against the end of the second hook groove 110 to limit the extension amount of the telescopic sleeve 11 in the housing 1; wherein, the second hook block 101 is molded on the fixed sleeve 10.

[0057] In a specific application scenario, a sleeve return spring (not shown) is connected between the telescopic sleeve 11 and the housing 1 , and the sleeve return spring enables the telescopic sleeve 11 to have a movement tendency of retracting into the housing 1 .

[0058] Furthermore, the sheath 73 can be inserted into the telescopic sleeve 11 .

[0059] Specifically, the sheath 73 is provided with a third hook groove 730 , and the telescopic sleeve 11 is provided with a third hook block 111 capable of abutting against the end of the third hook groove 730 to limit the extension amount of the sheath 73 in the telescopic sleeve 11 .

[0060] In this application, the positioning component 9 includes

[0061] a telescopic actuator 90 fixedly disposed on the housing 1 and having a telescopic shaft (not shown); and

[0062] A positioning block 91 connected to the end of the telescopic shaft;

[0063] The telescopic sleeve 11 is provided with a plurality of positioning recesses 112 , and the positioning block 91 can be inserted into any of the positioning recesses 112 to fix the extended position of the telescopic sleeve 11 in the housing 1 .

[0064] Specifically, the telescopic driver 90 can be a driver such as a cylinder, an electric push rod, a cam structure driven by a motor, etc.; the positioning recess 112 can be a rectangular recess, a circular recess, etc.; all are not limited in this application.

[0065] To sum up, in the process of using the present application for retinal injection, the syringe body 7 storing the medicine needs to be fixed on the linkage plate 55; subsequently, the relevant three-dimensional mobile device or multi-degree-of-freedom robotic arm is used to move the present application to an appropriate position above the patient's eye, and then the position of the above-mentioned shell 1 is fixed.

[0066] Next, the telescopic drive motor 50 is operated to continuously slide the syringe body 7 outward from the housing 1 ; the sliding process sequence is as follows:

[0067] The entire syringe body 7 slides forward until the third hook block 111 abuts against the end of the third hook groove 730;

[0068] The linkage outer sleeve 71 slides in the sheath 73 until the syringe 74 abuts against the hollow cone 732; at this time, the needle 75 is maximally protruded from the hollow cone 732;

[0069] The syringe body 7 and the telescopic sleeve 11 , which are fixed in relative position, slide forward together to allow the needle 75 to be inserted into the eye.

[0070] The position of the needle tip inserted into the eye is monitored by relevant electronic equipment (such as an optical coherence tomography scanner); when the needle tip reaches the position of the retina to be injected, the telescopic drive motor 50 is stopped and the telescopic drive 90 is operated, so that the positioning block 91 is inserted into a positioning recess 112 to fix the telescopic sleeve 11.

[0071] The telescopic drive motor 50 is started again to cause the piston 72 and the syringe 74 to move relative to each other, that is, by pressing the piston 72 into the syringe 74, the medicine in the syringe 74 is discharged into the retina.

[0072] When the retinal injection is completed, the telescopic drive motor 50 is started in reverse to pull the needle out of the eye until the syringe body 7 is reset to the cavity; during this process, under the action of the sleeve reset spring, the telescopic sleeve 11 can be reset and retracted into the shell 1, and under the action of the sheath reset spring, the linked outer sleeve 71 is ejected out of the sheath 73 until the first hook block 731 abuts against the end of the first hook groove 713.

[0073] Finally, the syringe body 7 is removed through the inlet 100 and is further processed.

[0074] In other embodiments of the present application, the syringe can also be used in injection processes at other locations of the eye, and is not limited to injections at the retinal site.

[0075] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A retinal syringe, characterized in that include: A housing (1) having a cavity formed therein, and an inlet (100) communicating with the cavity is provided on the housing (1); a telescopic sleeve (11) which is telescopically arranged on the housing (1); A positioning assembly (9) for defining the telescopic position of the telescopic sleeve (11); a linkage plate (55) which is telescopically arranged in the cavity; and a syringe body (7) detachably arranged on the linkage plate (55), wherein medicine is stored; The linkage plate (55) is capable of moving a portion of the syringe body (7) out of the telescopic sleeve (11), and is capable of cooperating with the telescopic sleeve (11) to press out the medicine in the syringe body (7); It also includes a transmission assembly (5) for driving the linkage plate (55); the transmission assembly (5) includes: Rotating a roller (54) disposed in the housing (1); a steel strip (56) capable of being wound on the winding roller (54); and a power transmission structure for releasing or retrieving the steel strip (56) on the winding roller (54); Wherein, the linkage plate (55) is fixed to one end of the steel belt (56); The syringe body (7) comprises: A linked outer sleeve (71) having a cavity (712) formed therein; a piston (72) fixed in the cavity (712); and a syringe (74) telescopically arranged in the cavity (712), wherein the medicine is stored; The end of the syringe (74) is provided with a hollow boss (741) for mounting a needle (75); the piston (72) is inserted into the syringe (74); A sheath (73) for protecting the needle (75) is slidably disposed on the linkage outer sleeve (71); The linked outer sleeve (71) is provided with a first hook groove (713), and the protective sleeve (73) is provided with a first hook block (731) capable of abutting against the end of the first hook groove (713) to prevent the linked outer sleeve (71) from falling out of the protective sleeve (73); One end of the sheath (73) is formed with a hollow cone (732), which enables the needle (75) to protrude from the sheath (73) and confines the syringe (74) within the sheath (73); The sheath (73) can be inserted into the telescopic sleeve (11); The sheath (73) is provided with a third hook groove (730), and the telescopic sleeve (11) is provided with a third hook block (111) capable of abutting against the end of the third hook groove (730).

2. The retinal injector according to claim 1, wherein The syringe body (7) is provided with a limiting groove (711), and the linkage plate (55) is provided with an arm (551); The arm (551) can be inserted into the limiting groove (711) to limit the syringe body (7) along the length direction of the shell (1).

3. The retinal injector according to claim 1, wherein The power transmission structure includes A steel belt driving roller (53) is rotatably arranged in the housing (1), and a plurality of driving protrusions (531) are evenly arranged on the outer circumference of the steel belt driving roller; a worm gear (52) coaxially arranged with the steel belt drive roller (53) and rotating synchronously; and A telescopic drive motor (50) fixed to the housing (1), wherein the output shaft of the telescopic drive motor (50) is provided with a worm (51) in transmission connection with the worm wheel (52); A plurality of shifting holes (560) are evenly formed on the steel belt (56); when the steel belt driving roller (53) rotates, the shifting protrusions (531) can be inserted into the plurality of shifting holes (560) one by one, thereby driving the steel belt (56) to be released or retracted from the winding roller (54).

4. The retinal injector according to claim 2, wherein The limiting groove (711) is configured on the linkage outer sleeve (71); A jacket end cap (721) is detachably fixed to one end of the linkage jacket (71), and the piston (72) is arranged on the jacket end cap (721) via a piston rod; Wherein, the piston rod and the outer sleeve end cover (721) are integrally formed as a whole.

5. The retinal injector according to claim 1, wherein The telescopic sleeve (11) is provided with a second hook groove (110), and the housing (1) is provided with a second hook block (101) capable of abutting against the end of the second hook groove (110).

6. The retinal injector according to claim 1, wherein The positioning component (9) includes a telescopic driver (90) fixedly arranged on the housing (1) and provided with a telescopic shaft; and A positioning block (91) connected to the end of the telescopic shaft; The telescopic sleeve (11) is provided with a plurality of positioning recesses (112), and the positioning block (91) can be inserted into any one of the positioning recesses (112).

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