Eye drug delivery system

Abstract

The embodiment of the invention relates to an eye drug delivery system which comprises a needle cylinder, a push-pull device, a needle body and an eyelid expanding device, the needle cylinder comprises a needle cylinder body, a first position indication mark and a plurality of damping rings, and the first position indication mark is located at the bottom end of the needle cylinder body; the damping rings are sequentially mounted on the inner wall of the needle cylinder body; the push-pull device comprises a piston and a push-pull assembly, the piston is located on the inner side of the needle cylinder body, and resistance is generated when the piston passes through the damping ring; the push-pull assembly is connected with the top end of the piston; the needle body comprises a needle body main body and a needle cylinder connecting part, and the needle body main body is provided with a second scale line and a pair of medicine outlet holes which are symmetrically arranged; the needle cylinder connecting part is connected with the needle cylinder and is provided with a second position indicating mark, and the second position indicating mark corresponds to the first position indicating mark; the eyelid expanding and supporting device is arranged on the outer side of the liquid medicine containing part in a sleeving mode.

Description

Technical Field

[0001] The present invention relates to the technical field of ophthalmic surgical instruments, and in particular, to an ophthalmic drug delivery system. Background Art

[0002] Ophthalmic surgery is a very delicate operation. The long and short needles used during the operation are important tools for doctors to perform micro-operations. However, for different ophthalmic diseases, the injection depths required are different. The problems that may exist with long and short needles in ophthalmic surgery mainly include the following aspects: Precision problem: Ophthalmic surgery requires extremely high precision. If the length, thickness, and sharpness of the needle are not suitable, it may lead to inaccurate surgical operations and affect the surgical effect. Operability problem: For different injection depths, it is necessary to switch between long and short needles back and forth, which prolongs the operation time and increases the complexity of the operation. Safety problem: During the replacement of long and short needles, the risk of infection is increased.

[0003] Therefore, in view of the above problems, medical device R & D personnel and ophthalmologists will continuously research and improve the design of needles for surgical drug injection to meet the high requirements of ophthalmic surgery. Summary of the Invention

[0004] The purpose of the present invention is to address the deficiencies existing in the prior art by providing an ophthalmic drug delivery system, which improves the accuracy of drug delivery and solves the problems of complexity and susceptibility to infection in ophthalmic surgery operations.

[0005] To achieve the above object, the present invention provides an ophthalmic drug delivery system, which includes:

[0006] A syringe barrel, which is a hollow tube and includes:

[0007] A syringe barrel body for accommodating a liquid medicine, having a liquid medicine accommodating portion and a needle body connecting portion; the liquid medicine accommodating portion has a first scale line for marking the injection amount of the liquid medicine; the needle body connecting portion communicates with the liquid medicine accommodating portion, and the inner diameter of the needle body connecting portion is smaller than the inner diameter of the liquid medicine accommodating portion;

[0008] A first position indicating mark located at the bottom end of the liquid medicine accommodating portion;

[0009] A plurality of damping rings sequentially installed on the inner wall of the liquid medicine accommodating portion and matching with the first scale line for generating damping;

[0010] A push-pull device, which includes:

[0011] A piston located inside the liquid medicine accommodating portion, the diameter of the piston matching the inner diameter of the liquid medicine accommodating portion, and the piston generating resistance when passing through the damping rings;

[0012] A push-pull assembly, connected to the top end of the piston, for pulling and pushing the piston in the liquid medicine containing part;

[0013] A needle body, which is a hollow tube and is used to deliver the liquid medicine to the part of the eye to be medicated. The needle body includes:

[0014] A needle body main body, which has a second scale line and a pair of medicine outlet holes symmetrically arranged. The second scale line is used to mark the depth of the needle body inserted into the part of the eye to be medicated, and the pair of medicine outlet holes are used for administering medicine;

[0015] A syringe connecting part, which is connected to the syringe through a needle body connecting part and has a second position indication mark. The second position indication mark is perpendicular to the horizontal connection line of the pair of medicine outlet holes along the axial line of the needle body main body and is used to indicate the position of the medicine outlet holes. The second position indication mark corresponds to the first position indication mark;

[0016] An eyelid stretching device, which is sleeved outside the liquid medicine containing part and is used for turning up and fixing the eyelid;

[0017] When sucking the liquid medicine, screw the syringe connecting part into the needle body connecting part so that the second position indication mark is aligned with the first position indication mark, insert the needle body main body into the liquid medicine, and pull the push-pull assembly. The piston moves from the bottom end to the top end along the liquid medicine containing part, so that the air pressure in the liquid medicine containing part is less than the external atmospheric pressure, and further the liquid medicine is sucked into the syringe;

[0018] When injecting the liquid medicine, turn up and fix the eyelid through the eyelid stretching device, insert the needle body main body into the part of the eye to be medicated. When the value indicated by the second scale line is equal to the preset depth, rotate the syringe so that the medicine outlet holes are aligned with the medicine administration points of the part of the eye to be medicated, and push the push-pull assembly. The piston moves from the top end to the bottom end along the liquid medicine containing part, so that the air pressure in the liquid medicine containing part is greater than the external atmospheric pressure, and thus the liquid medicine reaches the part of the eye to be medicated through the medicine outlet holes. When the number of damping times generated by the damping ring is equal to the preset injection volume, stop administering medicine.

[0019] Preferably, the eyelid stretching device includes:

[0020] A bracket, which has a through hole for the syringe to pass through;

[0021] An eyelid turning-up part, which is integrally connected to the bottom end of the bracket and is used to fit the contour of the eyelid and turn up and fix the eyelid.

[0022] Preferably, the eye drug delivery system further includes:

[0023] A clamping member, which includes a syringe sleeve and a needle body sleeve integrally connected; the syringe sleeve is sleeved outside the syringe body; the needle body sleeve is sleeved outside the syringe connection part.

[0024] Preferably, the eye drug delivery system further includes:

[0025] A cotton ball, sleeved on the needle body. The cotton ball has a tearable sticker and an extraction line. The tearable sticker is used to fix the cotton ball at the eye part to be administered with the drug; the extraction line is used to extract the cotton ball from the eye part to be administered with the drug.

[0026] Preferably, the eye drug delivery system further includes:

[0027] An eyeball protection device for protecting the eyeball, including:

[0028] A headgear assembly, including a headgear and a semi-circular clamping ring; the headgear is sleeved on the head, and the semi-circular clamping ring is clamped to the forehead;

[0029] An adjustable connecting band, fixed to the semi-circular clamping ring;

[0030] An eye mask, connected to the adjustable connecting band and covering the periphery of the eyeball.

[0031] More preferably, the eyeball protection device further includes:

[0032] An eye mask fixing member, located on the front of the headgear, for fixing the eye mask.

[0033] Even more preferably, the eye mask fixing member is implemented in any one of the ways of a clip, a magic tape, a snap fastener, and a magnetic attraction.

[0034] Preferably, the needle connection part has a first connection structure, and the syringe connection part has a second connection structure; the syringe and the needle are detachably connected through the first connection structure and the second connection structure.

[0035] Preferably, the first position indication mark is a protrusion or a notch; the second position indication mark is a protrusion or a notch.

[0036] Preferably, the push-pull assembly includes: a piston rod and a pressing member; the piston rod is fixed to the top end of the piston; the pressing member is fixed to the top end of the piston rod.

[0037] An eye drug delivery system provided by an embodiment of the present invention facilitates the measurement of the liquid medicine injection unit during the operation by arranging a damping ring on the inner wall of the syringe body, improves the accuracy of the liquid medicine injection, eliminates the need for visual observation of the scale line, and shortens the operation time to a certain extent; the second position indication mark corresponds to the first position indication mark, facilitating the observation of the position of the medicine outlet hole during the operation. The second scale line can mark the depth of the needle body inserted into the eye part to be administered, so that the depth of the needle body inserted into the eye part to be administered can be accurately measured according to actual needs, avoiding the problems of inconvenient operation and easy infection caused by frequent replacement of a long needle and a short needle due to different injection depths, and greatly shortening the operation time. A pair of medicine outlet holes are used for drug administration, which can improve the accuracy of the injection point. Moreover, as an auxiliary component for eye liquid medicine injection, the eye expansion device can turn up and fix the eyelid, solving the problems of inconvenient manual operation and easy infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 FIG. is a schematic structural diagram of an eye drug delivery system provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0040] The technical solutions of the present invention will be further described in detail below through the drawings and embodiments.

[0041] The eye drug delivery system provided by the embodiment of the present invention overcomes the problems of operation complexity and safety caused by frequent replacement of long and short needles during the operation, and realizes accurate injection of liquid medicine.

[0042] Figure 1 FIG. is a structural diagram of the eye drug delivery system provided by the embodiment of the present invention. The following will be described Figure 1 the technical solutions of the present invention by specific embodiments.

[0043] An eye drug delivery system provided by an embodiment of the present invention may specifically include: a syringe 1, a push-pull device 2, a needle body 3, and an eyelid expansion device 4.

[0044] The syringe 1 has a hollow tubular structure and is mainly used to accommodate the liquid medicine. Specifically, it may include a syringe body 11, a first position indication mark 12, and a plurality of damping rings 13.

[0045] Among them, the syringe body 11 is the main space for containing the liquid medicine, and has a liquid medicine containing part 111 and a needle body connecting part 112. The liquid medicine containing part 111 has a first scale line 1110, and the first scale line 1110 is used to mark the injection amount of the liquid medicine. The needle body connecting part 112 communicates with the liquid medicine containing part 111, and the inner diameter of the needle body connecting part 112 is smaller than the inner diameter of the liquid medicine containing part 111. The needle body connecting part 112 has a first connection structure (not shown in the figure), and the first connection structure can be realized by using a thread or a buckle. In an alternative solution, the syringe body 11 further includes a limiting member 113. The limiting member 113 is arranged at the top end of the syringe body 11 to facilitate the clamping of the syringe 1 during the operation process.

[0046] The first position indicating mark 12 can be specifically realized by using a protrusion or a notch, and is located at the bottom end of the liquid medicine containing part 111.

[0047] A plurality of damping rings 13 are sequentially installed on the inner wall of the liquid medicine containing part 111 and are matched with the first scale line 1110. The plurality of damping rings 13 can be specifically realized by using protrusions on the inner wall of the syringe body 11, or can be realized by installing separate circular rings on the inner wall of the syringe body 11. The present application does not make specific limitations on this. The damping rings 13 are mainly used to generate damping. During the operation process, one-time damping is generated, indicating the injection of a unit measurement. In this way, it is convenient to measure the liquid medicine injection unit during the operation process, improves the accuracy of the liquid medicine injection, and does not require visual observation of the scale line, and to a certain extent shortens the operation time.

[0048] The pushing and pulling device 2 is a power component for sucking and injecting the liquid medicine, and specifically may include: a piston (not shown in the figure) and a pushing and pulling assembly 21. The piston is located inside the liquid medicine containing part 111, and the diameter of the piston matches the inner diameter of the liquid medicine containing part 111. When the piston passes through the damping rings 13, resistance is generated. The pushing and pulling assembly 21 is connected to the top end of the piston and is used for pulling and pushing the piston in the liquid medicine containing part 111. In an alternative solution, the pushing and pulling assembly 21 may include: a piston rod 211 and a pressing member 212. The piston rod 211 is fixed to the top end of the piston. The pressing member 212 is fixed to the top end of the piston rod 211 to facilitate the pushing during the operation.

[0049] The shape of the needle body 3 is a hollow tube, which is mainly used to deliver the liquid medicine to the eye part to be medicated. Specifically, the needle body 3 may include: a needle body main body 31 and a syringe connection part 32. Among them, the needle body main body 31 has a second scale line 311 and a pair of medicine outlet holes 312 symmetrically arranged (only one of them is shown in the figure, and the other is on the opposite side). The second scale line 311 can mark the depth of the needle body 3 extending into the eye part to be medicated, so that the depth of the needle body extending in can be accurately measured according to actual needs, avoiding the problems of inconvenient operation and easy infection caused by frequently replacing a long needle and a short needle due to different injection depths, and greatly shortening the operation time. The pair of medicine outlet holes 312 are used for administering medicine, which can improve the accuracy of injection.

[0050] The syringe connection part 32 is a key part for connecting the syringe 1 and the needle body 3. It has a second position indication mark 321. The second position indication mark 321 is perpendicular to the horizontal connection line of the pair of medicine outlet holes 312 along the axial line of the needle body main body 31, that is, the second position indication mark 321 can indicate the position of the medicine outlet holes 312, and the second position indication mark 321 corresponds to the first position indication mark 12, which is convenient for observing the position of the medicine outlet holes 312 during the operation. The second position indication mark 321 can also be a protrusion or a notch.

[0051] In a specific example, the syringe connection part 32 has a second connection structure (not shown in the figure). The second connection structure can specifically adopt a thread or a buckle, and it only needs to match the first connection structure. For example, if the first connection structure is a thread, then the second connection structure is also a thread, which is convenient for the syringe 1 and the needle body 3 to be detachably connected through the first connection structure and the second connection structure.

[0052] The eyelid stretching device 4 is an auxiliary component for eye liquid medicine injection. It is sleeved on the outside of the liquid medicine accommodating part 111 and is used for turning up and fixing the eyelid. In a specific example, the eyelid stretching device 4 may include: a bracket 41 and an eyelid turning-up part 42. The bracket 41 has a through hole, and the setting of the through hole facilitates the eyelid stretching device 4 to be sleeved on the outside of the syringe body 11, but does not limit the movement of the syringe 1. The eyelid turning-up part 42 is integrally connected to the bottom end of the bracket 41 and is used to fit the eyelid contour and turn up and fix the eyelid, which is convenient for the liquid medicine injection operation.

[0053] In an alternative solution, to avoid the relative rotation between the needle body 3 and the syringe 1 due to the clamping force of the muscle during the rotation of the syringe, therefore, it is necessary to improve the stability of the connection between the needle body 3 and the syringe 1. The eye drug delivery system further includes: a clamping member (not shown in the figure). The clamping member may specifically include a syringe sleeve and a needle body sleeve integrally connected. The syringe sleeve is sleeved on the outside of the syringe body 11; the needle body sleeve is sleeved on the outside of the syringe connection part 32.

[0054] In an alternative embodiment, the ocular drug delivery system further comprises: a cotton ball 5. The cotton ball 5 is sleeved on the needle body 31 and will not be pulled out with the needle body when the needle body 3 is withdrawn from the ocular site to be administered, serving to continue cleaning the ocular site to be administered. The cotton ball 5 has a tearable sticker (not shown in the figure) and a extraction line (not shown in the figure). The tearable sticker is used to fix the cotton ball 5 at the ocular site to be administered. The extraction line is used to extract the cotton ball from the ocular site to be administered.

[0055] In an alternative embodiment, for the convenience of protecting the exposed eyeball, the ocular drug delivery system further comprises: an eyeball protection device (not shown in the figure). Specifically, it may include: a headgear assembly, an adjustable connecting band and an eye mask. Among them, the headgear assembly specifically includes a headgear and a semi-circular clamping ring. The headgear is sleeved on the head, and the semi-circular clamping ring is snap-connected to the forehead. The adjustable connecting band is fixed to the semi-circular clamping ring. The eye mask is connected to the adjustable connecting band and covers the periphery of the eyeball. It can be understood that the eye mask is pre-connected outside the eyeball, mainly to prevent the exposed eyeball from being infected. Therefore, an opening is provided in the middle of the eye mask for the eyelid stretching device 4 to extend into.

[0056] In a preferred embodiment, the eyeball protection device further comprises: an eye mask fixing member (not shown in the figure), which can be specifically implemented in any one of the ways of a clip, a magic tape, a snap fastener, or a magnetic attraction. The eye mask fixing member is located on the front of the headgear and is used to fix the eye mask before use.

[0057] The components of an ocular drug delivery system provided by the embodiments of the present invention and the connection relationships between the various components are introduced above. Next, the usage method of the ocular drug delivery system will be briefly introduced.

[0058] When sucking the liquid medicine, screw the syringe connection part 32 into the needle body connection part 112 so that the second position indication mark 321 is aligned with the first position indication mark 12, and insert the needle body 31 into the liquid medicine. Pull the push-pull assembly 21, and the piston moves from the bottom end to the top end along the liquid medicine accommodating part 111, so that the air pressure in the liquid medicine accommodating part 111 is less than the external atmospheric pressure, and thus the liquid medicine is sucked into the syringe 1.

[0059] When injecting the liquid medicine, cover the eyeball protection device on the eyeball to be injected, insert the eyelid stretching device 4 into the eye mask, turn up and fix the eyelid, cooperate with the eye ultrasonic detection device, insert the needle body 31 into the part of the eye to be administered with medicine. When the value indicated by the second scale line 311 is equal to the preset depth, rotate the syringe 1 so that the medicine outlet hole 312 is aligned with the administration point of the part of the eye to be administered with medicine, push the push-pull assembly 21, and the piston moves from the top to the bottom along the liquid medicine accommodating part 111, so that the air pressure in the liquid medicine accommodating part 111 is greater than the external atmospheric pressure, so that the liquid medicine reaches the part of the eye to be administered with medicine through the medicine outlet hole 312. When the number of damping times generated by the damping ring 13 is equal to the preset injection volume, stop administering the medicine, and leave the cotton ball 5 at the part of the eye to be administered with medicine. When it needs to be removed, just pull the extraction line.

[0060] An eye drug delivery system provided by an embodiment of the present invention is provided. By arranging a damping ring on the inner wall of the syringe body, it is convenient to measure the liquid medicine injection unit during the operation process, improves the accuracy of liquid medicine injection, and there is no need to observe the scale line with the naked eye, which shortens the operation time to a certain extent; the second position indication mark corresponds to the first position indication mark, which is convenient to observe the position of the medicine outlet hole during the operation process. The second scale line can mark the depth of the needle body inserted into the part of the eye to be administered with medicine, so that the depth of the needle body inserted into the part of the eye to be administered with medicine can be accurately measured according to actual needs, avoiding the problems of inconvenient operation and easy infection caused by frequently replacing a long needle and a short needle due to different injection depths, and greatly shortening the operation time. A pair of medicine outlet holes are used for administering medicine, which can improve the accuracy of the injection point. Moreover, the eye stretching device, as an auxiliary component for eye liquid medicine injection, can turn up and fix the eyelid, solving the problems of inconvenient manual operation and easy infection.

[0061] The specific embodiments described above further elaborate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An ocular drug delivery system, characterized in that, The described ocular drug delivery system includes: A syringe, which is a hollow tube and includes: A syringe body for accommodating the liquid medicine, having a liquid medicine accommodating part and a needle body connecting part; the liquid medicine accommodating part has a first scale line for marking the injection amount of the liquid medicine; the needle body connecting part is in communication with the liquid medicine accommodating part, and the inner diameter of the needle body connecting part is smaller than that of the liquid medicine accommodating part; A first position indicating mark located at the bottom end of the liquid medicine accommodating part; A plurality of damping rings sequentially installed on the inner wall of the liquid medicine accommodating part, matching with the first scale line, for generating damping; A pushing and pulling device, including: A piston located inside the liquid medicine accommodating part, the diameter of the piston matching the inner diameter of the liquid medicine accommodating part, and the piston generating resistance when passing through the damping rings; A pushing and pulling assembly connected to the top end of the piston for pulling and pushing the piston in the liquid medicine accommodating part; A needle, which is a hollow tube for delivering the liquid medicine to the ocular part to be administered, and the needle includes: A needle body having a second scale line and a pair of medicine outlet holes symmetrically arranged, the second scale line for marking the depth of the needle body extending into the ocular part to be administered, and the pair of medicine outlet holes for administering the medicine; A needle barrel connecting part connected to the syringe through the needle body connecting part, having a second position indicating mark, the second position indicating mark being perpendicular to the horizontal connection line of the pair of medicine outlet holes along the axial line of the needle body for indicating the position of the medicine outlet holes, and the second position indicating mark corresponding to the first position indicating mark; An eyelid stretching device sleeved outside the liquid medicine accommodating part for turning up and fixing the eyelids; When sucking the liquid medicine, screw the needle barrel connecting part into the needle body connecting part so that the second position indicating mark is aligned with the first position indicating mark, and insert the needle body into the liquid medicine. Pull the pushing and pulling assembly, and the piston moves from the bottom end to the top end along the liquid medicine accommodating part, so that the air pressure in the liquid medicine accommodating part is less than the external atmospheric pressure, and then the liquid medicine is sucked into the syringe; When injecting the liquid medicine, turn up and fix the eyelids through the eyelid stretching device, insert the needle body into the ocular part to be administered. When the value indicated by the second scale line is equal to the preset depth, rotate the syringe so that the medicine outlet holes are aligned with the administration points of the ocular part to be administered, and push the pushing and pulling assembly. The piston moves from the top end to the bottom end along the liquid medicine accommodating part, so that the air pressure in the liquid medicine accommodating part is greater than the external atmospheric pressure, and then the liquid medicine reaches the ocular part to be administered through the medicine outlet holes. When the number of times of damping generated by the damping rings is equal to the preset injection amount, stop administering the medicine.

2. The ocular drug delivery system according to claim 1, characterized in that, The eyelid stretching device includes: A bracket having a through hole for the syringe to pass through; An eyelid turning-up member integrally connected to the bottom end of the bracket for fitting the contour of the eyelid and turning up and fixing the eyelid.

3. The ocular drug delivery system according to claim 1, characterized in that, The ocular drug delivery system further includes: A clamping member, which includes a syringe sleeve and a needle body sleeve integrally connected; the syringe sleeve is sleeved outside the syringe body; the needle body sleeve is sleeved outside the needle barrel connecting part.

4. The ocular drug delivery system according to claim 1, wherein, The ocular drug delivery system further comprises: a cotton ball sleeved on the needle body, the cotton ball having a tearable sticker and a extraction line, the tearable sticker being used for fixing the cotton ball at the eye part to be administered with the drug; the extraction line being used for withdrawing the cotton ball from the eye part to be administered with the drug.

5. The ocular drug delivery system according to claim 1, wherein, The ocular drug delivery system further comprises: an eyeball protection device for protecting the eyeball, comprising: a headgear assembly including a headgear and a semi-circular clamping ring; the headgear is sleeved on the head, and the semi-circular clamping ring is clamped to the forehead; an adjustable connecting band fixed to the semi-circular clamping ring; an eye mask connected to the adjustable connecting band and covering the periphery of the eyeball.

6. The ocular drug delivery system according to claim 5, characterized in that, The eyeball protection device further comprises: an eye mask fixing member located on the front surface of the headgear for fixing the eye mask.

7. The ocular drug delivery system according to claim 6, wherein The eye mask fixing member is implemented in any one of the ways of a clip, a magic tape, a snap fastener, and a magnetic attraction.

8. The ocular drug delivery system according to claim 1, wherein The needle body connecting portion has a first connection structure, and the syringe connecting portion has a second connection structure; the syringe and the needle body are detachably connected through the first connection structure and the second connection structure.

9. The ocular drug delivery system according to claim 1, characterized in that, The first position indicating mark is a protrusion or a notch; the second position indicating mark is a protrusion or a notch.

10. The ocular drug delivery system according to claim 1, wherein The pushing and pulling assembly includes: a piston rod and an abutting member; the piston rod is fixed to the top end of the piston; the abutting member is fixed to the top end of the piston rod.

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