Eyeball surface flushing unit and flusher
By designing an elliptical or waist-shaped needle tube and a blunt end face, the problems of uneven water flow and needle injury in ophthalmic surgery are solved, achieving uniform flushing of a larger area and safe eye flushing effects.
Patent Information
- Application Number
- CN202421712874.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-07-18
AI Technical Summary
In the prior art, the small needle flushing needle used in ophthalmic surgery results in a thin and uneven water flow, which easily forms islands and affects the clarity of the visual field. In addition, the sharp needle design may damage the eyeball.
A flushing unit for the surface of the eyeball is designed, which adopts an elliptical or waist-shaped needle tube with a blunt end structure, combined with a trumpet-shaped flushing part, to ensure a coarser water flow and a larger flushing surface, reduce the impact force of the water flow, and avoid splashing and injury.
It achieves uniform flushing over a larger area, reduces water splashing on the panretinal mirror, improves the clarity of the surgical field of view, and avoids needle damage to the eyeball, ensuring smooth operation.
Smart Images
Figure CN223404126U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of medical devices, and more particularly to a flushing unit and a flushing device for the surface of an eyeball. Background Art
[0002] The human eye's cornea and conjunctiva are covered with a 7-10μm thick tear film, which has two main functions: to keep the eye moist and to improve the eye's refractive system, allowing external light to focus more clearly on the retina. Under normal circumstances, the human eye blinks 10-15 times per minute, evenly distributing the tear film across the cornea and conjunctiva. However, during intraocular microsurgery, a lid speculum is used to pull the upper and lower eyelids apart, preventing blinking. Tears evaporate quickly, drying out the cornea, severely impacting the eye's refractive system, resulting in an unclear field of vision and difficulty performing delicate procedures. Therefore, the surgical assistant uses a medical syringe to draw a certain amount of saline or phosphate-buffered saline solution, attaches a needle, and frequently applies water to the eye's surface to ensure a clear field of vision for the surgeon.
[0003] In current clinical practice, the commonly used needle is an ophthalmic irrigation needle used for intraocular procedures. Its diameter is very small, the water flow is very thin, and the irrigation area is small. Water is unevenly distributed on the corneal surface, easily forming islands and still blurring the visual field. Sometimes, to obtain more water flow, the surgical assistant increases the syringe pressure. When the water flows onto the corneal surface, it easily splashes, even onto the panretinal lens (an essential auxiliary device during surgery) located approximately 2-4 cm above the cornea, seriously affecting the surgical operation. In addition, surgical assistants sometimes choose a thicker needle to obtain more water flow, such as the needle that comes with a 10ml syringe. However, this needle has a sharp bevel design and is very likely to cause damage to the eyeball. Utility Model Content
[0004] The present invention aims to overcome at least one defect (shortcoming) of the above-mentioned prior art and provides a flushing unit and a flushing device for the surface of the eyeball, which are used to reduce the impact force of flushing water and prevent water from splashing.
[0005] One purpose of the present utility model is to provide a flushing unit for the surface of the eyeball, comprising a needle seat and a hollow needle tube, wherein the needle tube comprises a flushing end and a connecting end, wherein the connecting end is connected to the needle seat, and the end face of the flushing end of the needle tube is elliptical or oval, and the major axis of the end face of the flushing end is 1.4 to 3 mm, and the minor axis is 1.0 to 2 mm.
[0006] In this technical solution, the end face of the needle tube flushing end is larger than that of a traditional needle tube. Compared to the traditional thin water flow, the needle tube water flow of this solution is thicker and the flushing surface is larger. It can achieve a better flushing effect without increasing the flushing water pressure. The reduced impact force of the water can avoid splashing onto the panretinal lens due to excessive impact force of the water flow, forming water droplets, so that the surgeon's field of vision is not affected and the smooth progress of the operation is guaranteed. In addition, combined with the oval or round cross-section setting, the water flow is flattened, which is more convenient for flushing corners than circular areas.
[0007] Furthermore, the end of the flushing end of the needle tube is blunt.
[0008] In the present technical solution, the end surface of the flushing end is a flat surface rather than an inclined surface, so that the end is blunt and flat, thereby preventing the sharp needle from causing damage to the cleaning part and improving the safety of the needle tube.
[0009] Furthermore, the cross section of the needle tube is the same as the end surface of the flushing end.
[0010] In this technical solution, the cross section of the needle tube is consistent with the size and shape of the end face, that is, the diameter of the needle tube is consistent from the connecting end to the flushing end.
[0011] Furthermore, the flushing end of the needle tube is provided with a trumpet-shaped flushing portion, and the flushing opening of the flushing portion is elliptical or oval.
[0012] In this technical solution, the flushing water flows out from the needle tube through the flushing port of the flushing part.
[0013] Furthermore, the length of the flushing portion is 1 / 8 to 1 / 3 of the total length of the needle tube.
[0014] In this technical solution, the needle tube portion connected to the flushing portion can maintain a circular cross-section, which is convenient for matching with the syringe connected to the needle tube and has better applicability.
[0015] Furthermore, the length of the needle tube is 3 to 5 cm.
[0016] In this technical solution, if the length of the flushing needle is too long, it will increase the difficulty of aligning the needle with the cleaning area. If it is too short, it will be inconvenient for medical staff to operate. Therefore, the appropriate needle length facilitates the doctor's flushing operation and makes it easier for medical staff to align the needle with the area to be cleaned.
[0017] Furthermore, the needle tube is made of rigid material.
[0018] In this technical solution, the needle tube is made of a rigid material that is not easily bent, and it is convenient to align the flushing end of the needle tube with the part to be cleaned during flushing. The rigid material is preferably stainless steel.
[0019] Another object of the present invention is to provide an ocular surface flusher, comprising a syringe and any one of the above ocular surface flushing units, wherein the syringe is detachably connected to the needle seat.
[0020] In this technical solution, the interior of the syringe is used to contain cleaning water, and the syringe is connected to the needle tube through the needle seat.
[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: the end face size of the needle tube flushing end is larger than that of the traditional needle tube. Compared with the traditional thin water flow, the needle tube water flow of this solution is thicker, the flushing surface is larger, it is not easy to form an island, and there is no need to increase the flushing water pressure to achieve a better flushing effect. The impact force of the water is reduced to avoid splashing onto the full retina lens due to the excessive impact force of the water flow, forming water droplets, so that the operator's field of vision will not be affected, ensuring the smooth progress of the operation. In addition, combined with the elliptical or waist-round cross-sectional setting, the water flow is flattened, and it is more convenient to flush the corners than the circular ones. Furthermore, the present invention avoids the sharp needle tip from causing damage to the cleaning part by the blunt and flat setting of the end face of the flushing end, thereby improving the safety of the needle tube. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic structural diagram of the flushing unit of Example 1.
[0023] Figure 2 Schematic diagram of the elliptical end surface of the flushing end of Example 1.
[0024] Figure 3 Schematic diagram of the oval-shaped end surface of the flushing end of Example 1.
[0025] Figure 4 This is a schematic structural diagram of the flushing unit of Example 2.
[0026] Figure 5 This is a flushing schematic diagram of the flusher of Example 3.
[0027] Reference numerals: needle tube 100 , connecting end 110 , flushing end 120 , flushing portion 121 , needle seat 200 , syringe 300 , panretinal endoscope 400 . DETAILED DESCRIPTION
[0028] The drawings in this utility model are for illustrative purposes only and are not to be construed as limiting the scope of this utility model. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent the actual dimensions of the products. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.
[0029] Example 1
[0030] Combine Figures 1 to 3This embodiment provides an ocular surface flushing unit, comprising a needle hub 200 and a hollow needle tube 100. The needle tube 100 comprises a flushing end 120 and a connecting end 110, wherein the connecting end 110 is connected to the needle hub 200. The needle tube 100 has an elliptical or oval cross-section, with a major axis of 1.4 to 3 mm and a minor axis of 1.0 to 2 mm. For example, the major axis of the cross-section is 1.4 mm, 1.8 mm, 2.0 mm, 2.5 mm, 2.8 mm, or 3 mm, and the minor axis is 1.0 mm, 1.2 mm, 1.4 mm, 1.6 mm, 1.8 mm, or 2 mm.
[0031] In this embodiment, the cross section of the needle tube 100 is the same as the end face of the flushing end 120. The cross section of the needle tube 100 is consistent with the size and shape of the end face, that is, the diameter of the needle tube 100 is consistent from the connecting end to the flushing end.
[0032] The end face of the flushing end of the needle tube 100 is larger than that of conventional needle tubes. Compared to conventional thin streams, the water flow of this solution is thicker, covering a larger flushing area, and achieving a better flushing effect without increasing the flushing water pressure. The reduced impact force of the water can prevent splashing onto the panretinal lens due to excessive water flow, forming water droplets, thereby ensuring that the surgeon's field of vision is not affected and ensuring the smooth progress of the operation. In addition, the oval or round cross-section design flattens the water flow, making it easier to flush corners than a round cross-section.
[0033] Furthermore, the end of the flushing end 120 of the needle tube 100 is blunt.
[0034] The end surface of the flushing end 120 is a flat surface rather than an inclined surface, so that the end is flat and avoids the sharp needle from causing damage to the cleaning area.
[0035] Furthermore, the length of the needle tube 100 is 3 to 5 cm. The material of the needle tube 100 is a rigid material.
[0036] In this technical solution, if the flushing needle 100 is too long, it will increase the difficulty of aligning the needle 100 with the area to be cleaned. If it is too short, it will be inconvenient for the surgical assistant to operate. Therefore, the appropriate length of the needle 100 facilitates the doctor's flushing operation and makes it easier for the surgical assistant to align the needle tip with the area to be cleaned. The needle 100 is made of a rigid material that does not bend easily, making it easier to align the flushing end 120 of the needle 100 with the area to be cleaned during flushing. Such rigid materials include but are not limited to stainless steel.
[0037] Example 2
[0038] like Figure 4As shown, this embodiment provides an ocular surface flushing unit, comprising a needle hub 200 and a hollow needle tube 100. The needle tube 100 comprises a flushing end 120 and a connecting end 110, wherein the connecting end 110 is connected to the needle hub 200. The cross-section of the needle tube 100 is elliptical or oval, with a major axis of 1.4 to 3 mm and a minor axis of 1.0 to 2 mm. For example, the major axis of the cross-section is 1.4 mm, 1.8 mm, 2.0 mm, 2.5 mm, 2.8 mm, or 3 mm, and the minor axis is 1.0 mm, 1.2 mm, 1.4 mm, 1.6 mm, 1.8 mm, or 2 mm.
[0039] In this embodiment, the flushing end 120 of the needle tube 100 is provided with a trumpet-shaped flushing portion 121, and the flushing opening of the flushing portion is oval or oval. The length of the flushing portion 121 is 1 / 8 to 1 / 3 of the total length of the needle tube. For example, the length of the flushing portion 121 is 1 / 8, 1 / 7, 1 / 6, 1 / 5, or 1 / 3 of the total length of the needle tube. This arrangement allows the portion of the needle tube 100 connected to the flushing portion 121 to maintain a circular cross-section, making it easier to match the syringe connected to the needle tube 100 and improving its applicability.
[0040] The end face of the flushing end of the needle tube 100 is larger than that of conventional needle tubes. Compared to conventional thin streams, the present needle tube 100 has a thicker water flow, covering a larger flushing area. This allows for a better flushing effect without increasing the flushing water pressure. The reduced impact force of the water prevents splashing onto the retinal lens and causing edema due to excessive water flow, thus ensuring smooth operation without affecting the surgeon's field of view. Furthermore, the oval or round cross-section flattens the water flow, making it easier to flush corners than a circular cross-section.
[0041] Furthermore, the end of the flushing end 120 of the needle tube 100 is blunt.
[0042] The end surface of the flushing end 120 is a flat surface rather than an inclined surface, so that the end is flat and avoids the sharp needle from causing damage to the cleaning area.
[0043] Furthermore, the length of the needle tube 100 is 3 to 5 cm. The material of the needle tube 100 is a rigid material.
[0044] In this technical solution, if the flushing needle 100 is too long, it will increase the difficulty of aligning the needle 100 with the area to be cleaned. If it is too short, it will be inconvenient for the surgical assistant to operate. Therefore, the appropriate length of the needle 100 facilitates the doctor's flushing operation and makes it easier for the surgical assistant to align the needle tip with the area to be cleaned. The needle 100 is made of a rigid material that does not bend easily, making it easier to align the flushing end 120 of the needle 100 with the area to be cleaned during flushing. Such rigid materials include but are not limited to stainless steel.
[0045] Example 3
[0046] like Figure 5 As shown, this embodiment provides an ocular surface irrigator, comprising a syringe and the ocular surface irrigating unit provided in Example 1 or Example 2, wherein the syringe 300 is detachably connected to the needle holder 200. The interior of the syringe 300 is used to hold rinsing water, and the syringe 300 is connected to the needle tube 100 through the needle holder 200. The needle tube 100 of this solution has a thicker water flow and a larger irrigating surface, achieving a better irrigating effect without increasing the irrigating water pressure. The reduced impact force of the water can prevent splashing onto the panretinal scope 400 due to excessive water flow, thereby ensuring that the surgeon's field of view is not affected and the smooth progress of the operation is ensured.
[0047] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the technical solution of the present invention, and are not intended to limit the specific implementation methods of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of the present invention shall be included within the scope of protection of the claims of the present invention.
Claims
1. A flushing unit for the surface of an eyeball, comprising a needle holder and a hollow needle tube, wherein the needle tube comprises a flushing end and a connecting end, wherein the connecting end is connected to the needle holder, characterized in that: The end surface of the flushing end of the needle tube is elliptical or oval, and the major axis of the end surface of the flushing end is 1.4 to 3 mm, and the minor axis is 1.0 to 2 mm.
2. The eyeball surface flushing unit according to claim 1, characterized in that: The end of the flushing end of the needle tube is blunt.
3. An eyeball surface flushing unit according to any one of claims 1 or 2, characterized in that: The cross section of the needle tube is the same as the end surface of the flushing end.
4. The eyeball surface flushing unit according to any one of claims 1 or 2, characterized in that: The flushing end of the needle tube is provided with a trumpet-shaped flushing portion, and the flushing opening of the flushing portion is elliptical or oval.
5. The eyeball surface flushing unit according to claim 4, characterized in that: The length of the flushing portion is 1 / 8 to 1 / 3 of the total length of the needle tube.
6. The eyeball surface flushing unit according to any one of claims 1 or 2, characterized in that: The length of the needle tube is 3 to 5 cm.
7. The eyeball surface flushing unit according to any one of claims 1 or 2, characterized in that: The needle tube is made of rigid material.
8. An eye surface irrigator, characterized in that: The invention comprises a syringe and the eyeball surface flushing unit according to any one of claims 1 to 7, wherein the syringe and the needle seat are detachably connected.