Lacrimal passage flusher for ophthalmology department

Abstract

The utility model provides a lacrimal passage flusher for the ophthalmology department. The lacrimal passage flusher for the ophthalmology department solves the problems that an existing lacrimal passage flusher for the ophthalmology department is inconvenient to operate and long in flushing time. The lacrimal passage flusher for the ophthalmology department comprises an injector, a flushing pipe connected with the injector and an expansion head arranged at the liquid outlet end of the flushing pipe, the expansion head is of a conical structure, the conical top of the expansion head is a smooth arc-shaped blunt end, the outer surface of the expansion head is in smooth transition with the outer surface of the flushing pipe, and a liquid guide structure communicated with the flushing pipe is arranged on the expansion head. After the expansion head expands the lacrimal punctum, flushing fluid in the injector can enter the lacrimal passage through the flushing pipe and the liquid guide structure. Due to the fact that the liquid guide structure is arranged on the expansion head, after the expansion head expands the lacrimal punctum, flushing liquid can be injected into the lacrimal passage without retreating the expansion head, and the cleaning efficiency is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology and relates to an ophthalmic lacrimal duct irrigation device. Background Technology

[0002] Lacrimal duct irrigation is a procedure that involves injecting irrigation fluid or other medications into the lacrimal duct to clear any blockages. It is a routine method for diagnosing and treating lacrimal duct diseases. Most existing lacrimal duct irrigators are syringe-type devices. However, some patients have narrow lacrimal puncta and require the use of a lacrimal duct dilator to expand the punctum before inserting the needle.

[0003] To address this, a Chinese patent discloses a disposable lacrimal duct irrigation device [application publication number CN108578058A]. In use, medical personnel insert a punctal dilator and a cannula-type irrigation needle into the lacrimal canaliculus through the punctum. The insertion depth is determined by the scale lines on the cannula-type irrigation needle. The punctal dilator expands the lacrimal canaliculus. After dilation, the needle core is moved to the right into the right retraction chamber via an operating button. The punctal dilator is positioned to the left of the sealing ring to prevent irrigation fluid from entering the right retraction chamber through the sealing ring during irrigation. During irrigation, the medical personnel hold the syringe and push the push handle along the strip-shaped groove. The push rod moves the piston, causing the irrigation fluid in the syringe to sequentially flow through the outlet and inlet holes into the left irrigation chamber of the cannula-type irrigation needle, and then into the lacrimal canaliculus. Irrigation is then performed. After irrigation, the cannula-type irrigation needle is removed.

[0004] Because the needle core occupies the internal space of the irrigation needle, the irrigation fluid cannot be injected into the lacrimal duct in time after the lacrimal punctum is dilated, resulting in a long irrigation time for the entire lacrimal duct. Before irrigation, the needle core needs to be moved to the right retraction chamber. During the movement, the mucosa in the lacrimal duct will be pulled into the irrigation needle by the lacrimal punctum dilator, causing damage to the lacrimal duct mucosa. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing an ophthalmic lacrimal duct irrigator that can promptly inject irrigation fluid into the lacrimal duct after dilating the lacrimal punctum.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] An ophthalmic lacrimal duct irrigator includes a syringe, an irrigation tube connected to the syringe, and an expansion head located at the outlet end of the irrigation tube. The expansion head has a conical structure with a smooth, blunt, arc-shaped tip. The outer surface of the expansion head smoothly transitions to the outer surface of the irrigation tube. The expansion head is provided with a fluid guiding structure that communicates with the irrigation tube. When the expansion head dilates the lacrimal punctum, the irrigation fluid in the syringe can enter the lacrimal duct through the irrigation tube and the fluid guiding structure.

[0008] Because of the fluid guiding structure on the dilator head, the irrigation fluid can be injected into the lacrimal duct without retracting the dilator head after dilating the lacrimal punctum, which greatly improves the cleaning efficiency.

[0009] In the above-mentioned ophthalmic lacrimal duct irrigation device, the fluid guiding structure includes several first fluid guiding grooves that pass through the dilator head. The length of the first fluid guiding groove is less than the length of the dilator head, and the first fluid guiding groove extends from one end of the dilator head near the irrigation tube to the arc-shaped blunt end.

[0010] Since the length of the first drainage groove is less than the length of the dilator, the first drainage groove does not damage the structure of the arc-shaped blunt tip, making it easier for the arc-shaped blunt tip to enter the lacrimal punctum. After the dilator expands the lacrimal punctum, the irrigation fluid in the syringe enters the lacrimal duct through the irrigation tube and the first drainage groove.

[0011] In the aforementioned ophthalmic lacrimal duct irrigation device, the intersection of the side of the first drainage groove and the outer surface of the dilator head is rounded to reduce sharpness and prevent cuts to the lacrimal duct.

[0012] In the aforementioned ophthalmic lacrimal duct irrigation device, several of the first fluid guide grooves are arranged in a ring array along the midline of the dilator head.

[0013] In the above-mentioned ophthalmic lacrimal duct irrigator, the end of the dilator away from the curved blunt end has a connecting part that connects to the irrigation tube. The connecting part extends into the irrigation tube and is threaded / laser-welded / adheded to the irrigation tube. The connecting part is provided with a communication structure for connecting the first fluid guide groove and the irrigation tube.

[0014] The connecting part extends into and is fixedly connected to the irrigation tube to prevent iatrogenic injury caused by the dilator head detaching. A connecting structure is provided on the connecting part, allowing the irrigation fluid to enter the first drainage groove and then into the lacrimal duct.

[0015] In the above-mentioned ophthalmic lacrimal duct irrigation device, the connecting structure includes a plurality of second liquid guiding channels provided through the connecting portion. The second liquid guiding channels extend along the length direction of the connecting portion. The plurality of second liquid guiding channels are provided in one-to-one correspondence with the first liquid guiding channel, and the second liquid guiding channels and the first liquid guiding channels opposite to them are connected.

[0016] In the aforementioned ophthalmic lacrimal duct irrigator, the irrigation tube is a flexible tube.

[0017] In the above-mentioned ophthalmic lacrimal duct irrigator, the syringe is provided with an inner connector, and the irrigating tube is provided with an outer connector at one end near the syringe, and the outer connector is sleeved on the inner connector.

[0018] Compared with existing technologies, this ophthalmic lacrimal duct irrigator has the following advantages:

[0019] Because a first fluid guide groove is provided on the dilator head and a second fluid guide groove is provided on the connecting part, and the first fluid guide groove and the second fluid guide groove are connected, the flushing fluid can be delivered while ensuring the function of the dilator head. After the dilator head dilates the lacrimal punctum, the flushing fluid can be injected into the lacrimal duct without retracting the dilator head, which greatly improves the cleaning efficiency. The dilator head has a reasonable structural design, is easy to process, and is easy to assemble with the flushing tube. The entire flushing device has fewer parts, low cost, and is easy to operate and learn. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the flushing tube and the expansion head being assembled.

[0021] Figure 2 This is a schematic diagram of the assembly of an ophthalmic lacrimal duct irrigation device.

[0022] Figure 3 This is a schematic diagram of the expansion head.

[0023] Figure 4 This is another structural diagram of the expansion head.

[0024] In the diagram, 1 is the syringe; 11 is the inner connector; 2 is the flushing tube; 21 is the outer connector; 3 is the dilator; 30 is the curved blunt tip; 31 is the first liquid guide groove; 32 is the rounded corner; 33 is the connecting part; and 34 is the second liquid guide groove. Detailed Implementation

[0025] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0026] like Figure 2 The ophthalmic lacrimal duct irrigator shown includes a syringe 1, an irrigation tube 2 connected to the syringe 1, and an expansion head 3 located at the outlet end of the irrigation tube 2. The irrigation tube 2 is a medical soft tube. The syringe 1 is provided with an inner connector 11, and the irrigation tube 2 is provided with an outer connector 21 at one end near the syringe 1. The outer connector 21 is sleeved on the inner connector 11, which facilitates quick connection during use.

[0027] like Figure 1 , Figure 3 and Figure 4 As shown, the expansion head 3 has a conical structure and its cone apex is a smooth, arc-shaped blunt tip 30, as... Figure 1 and Figure 2 As shown, the outer surface of the dilator head 3 smoothly transitions to the outer surface of the irrigation tube 2. The dilator head 3 is equipped with a fluid guiding structure that communicates with the irrigation tube 2. After the dilator head 3 dilates the lacrimal punctum, the irrigation fluid in the syringe 1 can enter the lacrimal duct through the irrigation tube 2 and the fluid guiding structure. After the dilator head 3 dilates the lacrimal punctum, the irrigation fluid can be injected into the lacrimal duct without retracting the dilator head 3, greatly improving cleaning efficiency.

[0028] like Figure 3 and Figure 4 As shown, the liquid guiding structure includes several first liquid guiding grooves 31 that are disposed through the expansion head 3. The several first liquid guiding grooves 31 are arranged in a ring array along the center line of the expansion head 3. The length of the first liquid guiding grooves 31 is less than the length of the expansion head 3. The first liquid guiding grooves 31 extend from one end of the expansion head 3 near the flushing pipe 2 to the arc-shaped blunt head 30.

[0029] Since the length of the first fluid guide groove 31 is less than the length of the dilator head 3, the first fluid guide groove 31 does not damage the structure of the arc-shaped blunt tip 30, making it convenient for the arc-shaped blunt tip 30 to enter the lacrimal punctum. After the dilator head 3 dilates the lacrimal punctum, the rinsing fluid in the syringe 1 enters the lacrimal duct through the rinsing tube 2 and the first fluid guide groove 31.

[0030] like Figure 3 and Figure 4 As shown, the intersection of the side of the first fluid guide groove 31 and the outer surface of the dilator head 3 is provided with a rounded corner 32 to reduce sharpness and avoid cutting the tear duct.

[0031] like Figure 3 and Figure 4 As shown, the end of the expansion head 3 away from the arc-shaped blunt head 30 has a connecting part 33 that is connected to the flushing pipe 2. The connecting part 33 extends into the flushing pipe 2 and is laser welded to the flushing pipe 2. The connecting part 33 is provided with a communication structure for connecting the first liquid guide groove 31 and the flushing pipe 2.

[0032] The connecting part 33 extends into the irrigation tube 2 and is fixedly connected to it to prevent iatrogenic injury caused by the dilator head 3 falling off. A communication structure is provided on the connecting part 33, so that the irrigation fluid can enter the first fluid guide groove 31 through the connecting structure and then enter the lacrimal duct.

[0033] like Figure 3 and Figure 4 As shown, the connecting structure includes a plurality of second liquid guiding grooves 34 provided through the connecting portion 33. The second liquid guiding grooves 34 extend along the length direction of the connecting portion 33. The plurality of second liquid guiding grooves 34 are provided in one-to-one correspondence with the first liquid guiding grooves 31, and the second liquid guiding grooves 34 and the first liquid guiding grooves 31 opposite to them are connected.

[0034] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An ophthalmic lacrimal system flusher, characterized in that, The injection device (1), the flushing tube (2) connected with the injection device (1) and the expansion head (3) provided at the liquid outlet end of the flushing tube (2), the expansion head (3) is in a conical structure and the top of the cone is a smooth arc blunt head (30), the outer surface of the expansion head (3) is smoothly connected with the outer surface of the flushing tube (2), the expansion head (3) is provided with a liquid guide structure in communication with the flushing tube (2), and the flushing liquid in the injection device (1) can enter the tear duct through the flushing tube (2) and the liquid guide structure after the expansion head (3) expands the punctum.

2. The ophthalmic lacrimal system flusher of claim 1, wherein, The liquid guide structure includes a plurality of first liquid guide grooves (31) provided through the expansion head (3), the length of the first liquid guide groove (31) is less than the length of the expansion head (3), and the first liquid guide groove (31) extends from the end of the expansion head (3) close to the flushing tube (2) to the arc blunt head (30).

3. The ophthalmic lacrimal system flusher of claim 2, wherein, The intersection of the side surface of the first liquid guide groove (31) and the outer surface of the expansion head (3) is provided with a rounded corner (32).

4. An ocular punctum flusher according to claim 2 or 3, wherein, A plurality of first liquid guide grooves (31) are arranged in a ring shape along the center line of the expansion head (3).

5. The ophthalmic lacrimal system flusher of claim 2, wherein, The end of the expansion head (3) away from the arc blunt head (30) has a connecting part (33) connected with the flushing tube (2), the connecting part (33) extends into the flushing tube (2) and is threadedly connected / laser welded / medical glued to the flushing tube (2), and the connecting part (33) is provided with a communication structure for communicating the first liquid guide groove (31) and the flushing tube (2).

6. The ophthalmic lacrimal system flusher of claim 5, wherein, The communication structure includes a plurality of second liquid guide grooves (34) provided through the connecting part (33), the second liquid guide groove (34) extends along the length direction of the connecting part (33), a plurality of second liquid guide grooves (34) are provided one by one corresponding to the first liquid guide groove (31), and the second liquid guide groove (34) and the first liquid guide groove (31) opposite to it are in communication.

7. The ophthalmic lacrimal system flusher of claim 1, wherein, The flushing tube (2) is a flexible tube.

8. The ophthalmic lacrimal system flusher of claim 1, wherein, The injection device (1) is provided with an inner connector (11), and the end of the flushing tube (2) close to the injection device (1) is provided with an outer connector (21), and the outer connector (21) is sleeved on the inner connector (11).

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