Scale-visible arc-shaped lacrimal passage flushing needle

Abstract

The utility model relates to the technical field of lacrimal passage flushing tools, in particular to an arc-shaped lacrimal passage flushing needle with visible scales, which comprises an injection needle cylinder, an insertion tube is fixedly mounted at a liquid outlet end of the injection needle cylinder, and a plurality of limiting insertion plates which are annularly arranged at equal intervals are fixedly mounted on a tube body at the rear end of the insertion tube. A fixing connector is arranged on the inserting pipe, a conical end is arranged at the front end of the fixing connector, an inserting hole is formed in the fixing connector, a fluid channel is formed in the conical end, the inserting pipe is matched with the inserting hole in an inserting mode, a plurality of inserting grooves are formed in the hole wall of the rear end of the inserting hole, and the limiting inserting plate is matched with the inserting grooves in an inserting mode. A straight needle head is fixedly installed at the front end of the conical end, an arc-shaped needle head is fixedly installed at the front end of the straight needle head, and scale marks arranged along the path of the arc-shaped needle head are arranged on the surface of the arc-shaped needle head. The lacrimal passage catheter is convenient to install, conforms to physiological bending of the lacrimal passage, and is provided with visual scales.

Description

Technical Field

[0001] This utility model relates to the technical field of lacrimal duct irrigation tools, specifically to an arc-shaped lacrimal duct irrigation needle with visible scale. Background Technology

[0002] Lacrimal duct irrigation is a commonly used examination and treatment method in ophthalmology. It is mainly used to diagnose diseases such as lacrimal duct obstruction and stenosis, as well as to treat conditions such as dacryocystitis. During lacrimal duct irrigation, a syringe is generally used to inject medication. The irrigation needle at the tip of the syringe is inserted into the lacrimal duct to an appropriate depth, and then the medication is injected to irrigate. The irrigation medication can flow out from the nasal cavity or oral cavity. If the irrigation fluid flows out smoothly from the nasal cavity or oral cavity, it indicates that the lacrimal duct is patent; if there is resistance or reflux, it suggests that there may be obstruction or stenosis of the lacrimal duct.

[0003] However, existing lacrimal duct irrigation needles have some problems in practical applications. First, most traditional lacrimal duct irrigation needles have a straight needle structure, which does not conform to the physiological curvature of the human lacrimal duct. During irrigation, the straight needle is difficult to enter the lacrimal duct smoothly, which not only increases the patient's pain but may also cause lacrimal duct damage and affect the treatment effect. Second, existing irrigation needles lack clear and accurate scale markings, making it difficult for medical staff to accurately control the depth of the irrigation needle entering the lacrimal duct. This can easily lead to problems such as lacrimal duct perforation or incomplete irrigation due to excessive or insufficient needle insertion. In view of this, we propose a curved lacrimal duct irrigation needle with visible scale markings. Utility Model Content

[0004] The purpose of this invention is to provide a graduated, arc-shaped lacrimal duct irrigation needle to address the deficiencies mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A graduated, arc-shaped lacrimal duct irrigation needle includes an injection syringe. A connector is fixedly installed at the outlet end of the injection syringe. Multiple circumferentially spaced limiting plates are fixedly installed on the rear end of the connector. A fixing connector is provided on the connector, with a tapered end at its front end. An insertion hole is provided within the fixing connector, and a fluid channel is provided within the tapered end. The connector and the insertion hole are interlocked. Multiple insertion grooves are provided on the rear wall of the insertion hole, and the limiting plates are interlocked with the insertion grooves. A straight needle is fixedly installed at the front end of the tapered end, and an arc-shaped needle is fixedly installed at the front end of the straight needle. Graduation lines are provided on the surface of the arc-shaped needle along its path.

[0007] Preferably, the number of limiting plates is equal to the number of insertion slots, and the size of the limiting plates is adapted to the size of the insertion slots.

[0008] Preferably, the cross-section of the arc-shaped needle is arc-shaped, the arc-shaped needle is arranged in a semi-spiral ring, and the end of the arc-shaped needle is not on the same plane as the straight needle.

[0009] Preferably, a sealing gasket is fixedly installed on the front end wall of the insertion hole, and the insertion tube and the sealing gasket are interference-fitted.

[0010] Preferably, the liquid outlet end of the arc-shaped needle is provided with multiple overflow holes that communicate with the outside.

[0011] Preferably, a gripping support is fixedly installed at the rear end of the injection syringe, a connecting rod is slidably connected inside the injection syringe, a piston is fixedly installed at the front end of the connecting rod, the piston is located inside the injection syringe and slidably connected to the injection syringe, and a push plate is fixedly installed at the rear end of the connecting rod.

[0012] Preferably, the cross-section of the connecting rod is cross-shaped, and the size of the connecting rod is adapted to the size of the injection syringe.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, by setting a plug tube at the liquid outlet end of the injection syringe and a matching plug hole on the fixed connector, combined with the connection design of the limiting plug plate and the plug groove, prevents the fixed connector from rotating, and realizes a quick and stable connection between the injection syringe and the fixed connector. During operation, simply align the plug tube with the plug hole and insert it to complete the installation, achieving the effect of convenient assembly and improved ease of use.

[0015] 2. This utility model adapts to the physiological curvature of the lacrimal duct by setting the front end of the straight needle to an arc-shaped needle and setting scale lines on the surface of the arc-shaped needle. Medical staff can accurately control the needle insertion depth according to the scale lines. Multiple overflow holes enable the irrigation fluid to be sprayed evenly, thereby improving the accuracy of lacrimal duct irrigation and reducing patient pain.

[0016] 3. This utility model uses a semi-spiral arc-shaped needle design to further conform to the lacrimal duct direction, while ensuring that the straight needle does not obstruct the view of the end of the arc-shaped needle, making it easier for medical staff to observe the specific position of the end of the arc-shaped needle, and making it easier for the end of the arc-shaped needle to be inserted into the lacrimal duct. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0019] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is a front view of the straight needle and the curved needle of this utility model;

[0021] Figure 5 This is a cross-sectional view of the fixed connector and the tapered end of this utility model;

[0022] The meanings of the labels in the diagram are as follows:

[0023] 1. Syringe; 10. Holder; 11. Piston; 12. Connecting rod; 13. Injection tray; 14. Connecting tube; 141. Limiting plate;

[0024] 2. Fixed connector; 20. Insertion hole; 21. Insertion groove; 22. Sealing gasket; 23. Tapered end; 24. Fluid channel; 25. Straight needle; 26. Curved needle; 261. Scale line; 262. Overflow hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-5This utility model provides a technical solution: a graduated, arc-shaped lacrimal duct irrigation needle, including an injection syringe 1. A connector 14 is fixedly installed at the outlet end of the injection syringe 1. Multiple circumferentially arranged limiting plates 141 are fixedly installed on the rear end of the connector 14. A fixing connector 2 is provided on the connector 14. A tapered end 23 is provided at the front end of the fixing connector 2. An insertion hole 20 is provided inside the fixing connector 2. A fluid channel 24 is provided inside the tapered end 23. The connector 14 and the insertion hole 20 are inserted into each other. Multiple insertion grooves 21 are provided on the rear end wall of the insertion hole 20. The limiting plates 141 are inserted into the grooves 21. The number of insertion slots 1 and 21 is equal, and the size of the limiting plate 141 is adapted to the size of the insertion slot 21, realizing a quick and stable connection between the syringe 1 and the fixed connector 2. This connection method is easy to install and has strong stability, avoiding accidental separation of the two during the flushing process. At the same time, after the limiting plate 141 is inserted into the insertion slot 21, it can prevent the fixed connector 2 from rotating, ensuring stability. A sealing gasket 22 is fixedly installed on the front end hole wall of the insertion hole 20. The insertion tube 14 and the sealing gasket 22 are interference-fitted, which effectively prevents the flushing fluid from leaking. At the same time, it can increase the friction, so that the fixed connector 2 and the insertion tube 14 will not separate from each other, ensuring the smooth progress of the flushing work.

[0027] In this embodiment, a straight needle 25 is fixedly installed at the front end of the tapered end 23, and an arc-shaped needle 26 is fixedly installed at the front end of the straight needle 25. The arc-shaped needle 26 has an arc-shaped cross-section and is arranged in a semi-spiral ring shape, so that the shape of the arc-shaped needle 26 is adapted to the physiological curvature of the human lacrimal duct, which greatly reduces the difficulty of needle insertion, reduces damage to the lacrimal duct, and alleviates patient pain. At the same time, the end of the arc-shaped needle 26 and the straight needle 25 are not on the same plane, so that when looking directly at the straight needle 25 and the arc-shaped needle 26, the straight needle 25 will not obstruct the line of sight to the end of the arc-shaped needle 26. The shielding on the top ensures that medical staff can more easily observe the end of the curved needle 26 and insert it into the lacrimal duct. The surface of the curved needle 26 is provided with scale lines 261 along the path of the curved needle 26. The scale lines 261 range from 10mm to 15mm and are set from the front end of the curved needle 26 to the rear, which makes it convenient for medical staff to accurately control the needle depth and avoid complications caused by improper needle insertion. The liquid outlet end of the curved needle 26 is provided with multiple overflow holes 262 that are connected to the outside, which can make the irrigation fluid sprayed evenly and stably into the lacrimal duct, improving the irrigation effect.

[0028] Specifically, a grip support 10 is fixedly installed at the rear end of the syringe 1, making it more comfortable and stable for medical staff to hold during operation; a connecting rod 12 is slidably connected inside the syringe 1, and a piston 11 is fixedly installed at the front end of the connecting rod 12. The piston 11 is located inside the syringe 1 and slidably connected to the syringe 1; a push plate 13 is fixedly installed at the rear end of the connecting rod 12. When medical staff push the push plate 13, the connecting rod 12 drives the piston 11 to slide smoothly, accurately controlling the amount and flow rate of the flushing fluid; the cross section of the connecting rod 12 is cross-shaped, and the size of the connecting rod 12 is adapted to the size of the syringe 1, ensuring the smoothness of the operation process, reducing the difficulty of work for medical staff, and improving flushing efficiency.

[0029] When using the graduated and visible arc-shaped lacrimal duct irrigation needle of this utility model, first draw an appropriate amount of irrigation fluid into the syringe 1, then insert the insertion tube 14 into the insertion hole 20 of the fixed connector 2, so that the limiting plate 141 and the insertion groove 21 are locked in one by one, ensuring that the front end of the insertion tube 14 is inserted into the sealing gasket 22, thereby achieving a stable connection between the syringe 1 and the fixed connector 2.

[0030] Subsequently, the patient is guided to assume a suitable position, and the eyes are routinely disinfected. The medical staff holds the syringe 1, using the grip 10 for a stable grip, and aligns the curved needle 26 with the lacrimal duct. Referring to the scale line 261 on its surface, the needle is slowly inserted into the lacrimal duct. Specifically, according to the reading on the scale line 261, the needle is inserted 1-2 mm into the lower lacrimal punctum, and then turned horizontally to enter the lacrimal canaliculus 3-5 mm towards the nasal side. Because the semi-spiral design of the curved needle 26 conforms to the physiological curvature of the lacrimal duct, and the straight needle 25 does not obstruct the view at its end, the needle insertion operation is smoother. Then, the injection plate 13 is pushed, and the connecting rod 12 drives the piston 11 to slide inside the syringe 1, controlling the irrigation fluid to flow through the fluid channel 24 and the straight needle 25, and spraying out from the overflow hole 262 of the curved needle 26. At the same time, the backflow of the irrigation fluid is observed to judge the condition of the lacrimal duct.

[0031] After rinsing, slowly pull out the curved needle 26 to clean the patient's eyes.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A graduated, arc-shaped lacrimal duct irrigation needle, comprising an injection syringe (1), characterized in that: The syringe (1) has a connector (14) fixedly installed at its outlet end. Multiple circumferentially spaced limiting plates (141) are fixedly installed on the rear end of the connector (14). A fixing connector (2) is provided on the connector (14). A tapered end (23) is provided at the front end of the fixing connector (2). A insertion hole (20) is provided inside the fixing connector (2). A fluid channel (24) is provided inside the tapered end (23). The connector (14) is connected to the... The insertion holes (20) are connected to each other. The rear end of the insertion hole (20) is provided with a plurality of insertion grooves (21). The limiting plate (141) is connected to the insertion grooves (21). The front end of the tapered end (23) is fixedly installed with a straight needle (25). The front end of the straight needle (25) is fixedly installed with an arc-shaped needle (26). The surface of the arc-shaped needle (26) is provided with scale lines (261) arranged along the path of the arc-shaped needle (26).

2. The graduated, arc-shaped lacrimal duct irrigation needle according to claim 1, characterized in that: The number of the limiting inserts (141) and the number of the insertion slots (21) are equal, and the size of the limiting inserts (141) is adapted to the size of the insertion slots (21).

3. The graduated, curved lacrimal duct irrigation needle according to claim 1, characterized in that: The cross-section of the arc-shaped needle (26) is arc-shaped, and the arc-shaped needle (26) is arranged in a semi-spiral ring shape. The end of the arc-shaped needle (26) is not on the same plane as the straight needle (25).

4. The graduated, curved lacrimal duct irrigation needle according to claim 1, characterized in that: A sealing gasket (22) is fixedly installed on the front end wall of the insertion hole (20), and the insertion tube (14) and the sealing gasket (22) are interference-fitted.

5. The graduated, curved lacrimal duct irrigation needle according to claim 1, characterized in that: The arc-shaped needle (26) has multiple overflow holes (262) on its liquid outlet end.

6. The graduated, arc-shaped lacrimal duct irrigation needle according to claim 1, characterized in that: A gripping support (10) is fixedly installed at the rear end of the injection syringe (1). A connecting rod (12) is slidably connected inside the injection syringe (1). A piston (11) is fixedly installed at the front end of the connecting rod (12). The piston (11) is located inside the injection syringe (1) and is slidably connected to the injection syringe (1). A push plate (13) is fixedly installed at the rear end of the connecting rod (12).

7. The graduated, curved lacrimal duct irrigation needle according to claim 6, characterized in that: The cross section of the connecting rod (12) is cross-shaped, and the size of the connecting rod (12) is adapted to the size of the injection syringe (1).

Images