Integrated lacrimal passage flushing needle

Abstract

The utility model discloses an integrated lacrimal passage flushing needle, belongs to the technical field of medical instruments, and aims to solve the problems that in the prior art, as a lacrimal passage flushing needle head and a lacrimal punctum expansion tube are two independent instruments, an operator needs to replace the instruments when flushing the lacrimal passage, and the operation is greatly disturbed. The flushing needle comprises a needle body, multiple sets of flushing holes are formed in the side, close to a needle head, of the needle body, a liquid channel for flushing liquid to flow is formed in the needle body, and the multiple sets of flushing holes are communicated with the liquid channel. The lacrimal punctum expansion tube is movably connected with the needle body, and a lacrimal punctum expansion head is arranged at the far end of the lacrimal punctum expansion tube; the needle body and the lacrimal punctum expansion tube are fixed in the handheld part through the sliding adjusting assembly and the fixing assembly respectively. The integrated lacrimal passage flushing needle is simple in structure, convenient to install, controllable in cost and capable of effectively improving comfort of a patient during lacrimal passage flushing.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an integrated lacrimal duct flushing needle. Background Art

[0002] Tear duct irrigation is an operation technique that injects liquid into the tear duct to clear blockages in different parts of the tear duct. Tear duct irrigation is a routine diagnostic and treatment method in ophthalmology, suitable for the preoperative treatment of all ophthalmic surgery patients and the diagnosis and treatment of patients with tear duct diseases. Tear duct irrigation requires the use of a special tear duct irrigation device to enter the lacrimal canaliculus through the lacrimal punctum, and use normal saline or drugs to flush the tear duct.

[0003] At present, the commonly used tear duct flushing tool is a conventional syringe with a tear duct flushing needle. When performing tear duct flushing, the operator needs to use the thumb to pull the inner side of the lower eyelid downward to expose the lower lacrimal punctum, insert the tear duct flushing needle vertically into the lacrimal punctum 1mm, then turn it horizontally, run along the lower lacrimal canaliculus inside the eyelid for about 5mm, and inject the flushing agent, usually normal saline.

[0004] When the patient's lacrimal puncta is small, a lacrimal punctum dilator is also needed to dilate the lacrimal puncta. Since the eye operation requires extremely high precision, the operator should reduce the disturbance of the external environment to the operation during the operation, such as changing the instrument; therefore, there is an urgent need for a tear duct flushing needle with an injection needle body and a lacrimal punctum dilator tube integrated to meet the needs of lacrimal punctum dilation and injection at the same time. Utility Model Content

[0005] The utility model aims to provide an integrated lacrimal duct flushing needle to solve the problem in the prior art that the lacrimal duct flushing needle and the lacrimal punctum dilation tube are two independent instruments, which causes the operator to need to replace the instruments when performing the lacrimal duct flushing operation, causing great disturbance to the operation.

[0006] The technical solution of the utility model to solve the above technical problems is as follows:

[0007] An integrated lacrimal duct flushing needle comprises:

[0008] The needle body has a proximal end and a distal end relative to each other. A needle head is formed at the distal end of the needle body. A plurality of flushing holes are arranged on one side of the needle body close to the needle head. A liquid channel for flushing liquid circulation is formed in the needle body. The plurality of flushing holes are respectively connected to the liquid channel. A liquid injection tube is connected at the proximal end of the needle body. The liquid injection tube is used to connect a syringe.

[0009] The lacrimal punctum dilation tube is movably connected to the needle body, and the lacrimal punctum dilation tube also has a relative proximal end and a distal end, and a lacrimal punctum dilation head is arranged at the distal end of the lacrimal punctum dilation tube;

[0010] A hand-held part is provided with a sliding adjustment component and a fixing component; the needle body and the lacrimal punctum dilation tube are fixed in the hand-held part through the sliding adjustment component and the fixing component respectively.

[0011] The flushing liquid can be injected into the needle body through the injection tube by means of a syringe. The flushing liquid flows out from the flushing hole at the distal end of the needle body after passing through the liquid channel in the needle body, thereby flushing the lacrimal duct. The lacrimal punctum dilation tube can be used to dilate the lacrimal punctum of patients with smaller lacrimal puncta before flushing, thereby facilitating the needle head to enter the lacrimal canaliculus from the lacrimal punctum. The provision of a hand-held portion facilitates operation on the one hand, and on the other hand, the position of the needle body can be controlled by a sliding adjustment component in the hand-held portion, so that the needle body extends out of the distal end of the lacrimal punctum dilation tube or is recovered in the lacrimal punctum dilation tube.

[0012] Optionally or preferably, the fixing assembly includes fixing block 1 and fixing block 2; a thread is provided at the proximal end of the lacrimal punctum dilation tube; fixing block 1 is fixedly connected to the inner wall of the handheld part; fixing block 2 is threadedly connected to the proximal end of the lacrimal punctum dilation tube.

[0013] By arranging threads on the lacrimal punctum dilation tube and the second fixing block, the lacrimal punctum dilation tube is threadedly connected to the hand-held part, which facilitates the installation of the lacrimal punctum dilation tube. When performing lacrimal duct flushing operations on different patients, there is no need to replace the hand-held part. You only need to unscrew the lacrimal punctum dilation tube and pull out the needle body.

[0014] Optionally or preferably, the sliding adjustment component includes a plug-in portion and a pressing portion; the plug-in portion is provided with a through hole for the needle body to pass through, and the inner wall of the through hole is a silicone layer; the proximal end of the needle body passes through the plug-in portion and is connected to the injection tube.

[0015] By providing the silicone layer, a more secure plug-in relationship can be formed between the needle body and the plug-in portion, and during assembly and disassembly, only plugging and unplugging are required, which is convenient for operation.

[0016] Optionally or preferably, the pressing portion includes a pressing plate connected to the plug-in portion and a button and a buckle respectively connected to the pressing plate;

[0017] The hand-held portion is provided with a slide groove for the button to slide along the axial direction of the hand-held portion and a plurality of clamping grooves, and the clamping grooves are used to fix the buckle and form a clamping relationship with the buckle.

[0018] Optionally or preferably, an anti-slip layer is provided on the upper end surface of the button.

[0019] Optionally or preferably, the punctum dilator tip is spherical, elliptical or gradually expanding.

[0020] Optionally or preferably, it is characterized in that the needle body is integrally connected to the lacrimal punctum dilation tube.

[0021] The utility model has the following beneficial effects:

[0022] (1) The needle body and the lacrimal punctum dilation tube are integrated so that the operator can complete the lacrimal duct flushing work for patients with small lacrimal puncta without changing the instrument during the lacrimal duct flushing operation, thereby reducing the disturbance to the operation caused by changing the instrument;

[0023] (2) By providing a sliding adjustment component and a fixing component, the needle body and the lacrimal punctum dilation tube are easy to disassemble and assemble, so that the operator only needs to replace the needle body and the lacrimal punctum dilation tube when performing lacrimal duct flushing operations on different patients;

[0024] (3) The hand-held portion is provided to facilitate operation. On the other hand, the position of the needle can be controlled by a sliding adjustment component in the hand-held portion, so that the needle extends out of the distal end of the punctum dilation tube or is retracted into the punctum dilation tube. The operator can select the extension distance of the needle compared to the punctum dilation tube according to actual operation needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of the integrated lacrimal duct flushing needle of the utility model;

[0026] Figure 2 for Figure 1 A partial enlarged schematic diagram of the middle A part;

[0027] Figure 3 for Figure 1 A partial enlarged schematic diagram of part B in the middle.

[0028] In the figure: 10, needle body; 11, needle head; 12, flushing hole; 13, liquid channel; 14, injection tube; 20, lacrimal punctum dilation tube; 21, lacrimal punctum dilation head; 30, hand-held part; 31, sliding adjustment component; 32, fixing component; 33, fixing block 1; 34, fixing block 2; 35, plug-in part; 36, pressing part; 37, pressure plate; 38, button; 39, buckle; 310, card slot. DETAILED DESCRIPTION

[0029] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0030] Example:

[0031] See also Figures 1 to 3 An integrated lacrimal duct flushing needle comprises an integrated needle body 10 and a lacrimal punctum dilation tube 20, wherein the lacrimal punctum dilation tube 20 is sleeved on the outside of the needle body 10, and the length of the lacrimal punctum dilation tube 20 should be shorter than that of the needle body 10; and also comprises a hand-held part 30, wherein the needle body 10 and the lacrimal punctum dilation tube 20 are fixed in the hand-held part 30 by a sliding adjustment component 31 and a fixing component 32 respectively.

[0032] In actual work, the needle body 10 and the lacrimal punctum dilation tube 20 are packaged in a sterile and sealed manner, and the operator only needs to replace the needle body 10 and the lacrimal punctum dilation tube 20 when performing lacrimal duct flushing operations on different patients.

[0033] In this embodiment, the needle body 10 has a relative proximal end and a distal end. The proximal end and the distal end here are relative to the operator and are easy to understand. In actual work, the operator holds the handheld part 30 in his hand. At this time, for the operator, the end of the needle body 10 closer to the operator is the proximal end, and conversely, the end of the needle body 10 farther from the operator is the distal end.

[0034] Furthermore, a needle head 11 is formed at the distal end of the needle body 10, and a plurality of flushing holes 12 are provided on one side of the needle body 10 close to the needle head 11. A liquid channel 13 for circulating flushing liquid is formed inside the needle body 10, and the plurality of flushing holes 12 are respectively connected to the liquid channel 13; a liquid injection tube 14 is connected at the proximal end of the needle body 10, and the liquid injection tube 14 is used to connect a syringe.

[0035] In actual work, the operator injects the flushing liquid into the injection tube 14 through a syringe, and then the flushing liquid reaches the needle head 11 and the flushing hole 12 through the liquid channel 13; in this embodiment, the purpose of providing multiple flushing holes 12 on the side wall at the distal end of the needle body 11 is to avoid blockage of the needle head 11.

[0036] In this embodiment, the needle body 10 is movably connected to the hand-held part 30 through a sliding adjustment component 31. The purpose of the sliding setting is to control the position of the needle body 10 relative to the lacrimal punctum dilation tube 20, so that the needle body 10 extends out of the distal end of the lacrimal punctum dilation tube 20 or is retracted into the lacrimal punctum dilation tube 20; when the needle body 10 extends out of the distal end of the lacrimal punctum dilation tube 20, it is a lacrimal duct flushing process; when the needle body 10 is retracted into the lacrimal punctum dilation tube 20, it is a lacrimal punctum dilation process.

[0037] Specifically, the sliding adjustment component 31 includes an inserting portion 35 and a pressing portion 36 ; the inserting portion 35 is provided with a through hole for the needle body 10 to pass through, and the proximal end of the needle body 10 passes through the inserting portion 35 and is connected to the injection tube 14 .

[0038] In this embodiment, in order to increase the friction between the needle body 10 and the plug-in portion 35 , the inner wall of the through hole is a silicone layer.

[0039] The pressing portion 36 includes a pressing plate 37 connected to the plug-in portion 35 and a button 38 and a buckle 39 respectively connected to the pressing plate 37. The pressing plate 37 tilts upward in the absence of external force. In the actual production process, the plug-in portion 35, the pressing plate 37, the button 38 and the buckle 39 can be integrally formed.

[0040] Furthermore, the hand-held portion 30 is provided with a slide groove for the button 38 to slide along its axial direction and a plurality of clamping grooves 310 , wherein the clamping grooves 310 are used to fix the above-mentioned buckle 39 and form a clamping relationship with the buckle 39 .

[0041] It can be understood that when there is no external force on the pressing part 36, the buckle 39 can be stuck in one of the slots 310. When the needle body 10 needs to be slidably adjusted, the operator can press the button 38 downward and slide it. When a suitable sliding distance is selected (i.e., the relative distance between the distal end of the needle body 10 and the lacrimal punctum dilation tube 20), the button 38 is released to allow the buckle 39 to be stuck in the corresponding slot 310 to complete the fixation.

[0042] In this embodiment, the lacrimal punctum dilation tube 20 also has a proximal end and a distal end similar to the needle body 10, and a lacrimal punctum dilation head 21 is provided at the distal end of the lacrimal punctum dilation tube 20; in this embodiment, the lacrimal punctum dilation head 21 is elliptical. The lacrimal punctum dilation tube 20 is fixed in the handheld part 30 by a fixing assembly 32; wherein the fixing assembly 32 includes a fixing block 1 33 and a fixing block 2 34; a thread is provided at the proximal end of the lacrimal punctum dilation tube 20, the fixing block 1 33 is fixedly connected to the inner wall of the handheld part 30, and the fixing block 2 34 is threadedly connected to the proximal end of the lacrimal punctum dilation tube 20.

[0043] During the actual installation process, the operator takes out the needle body 10 and the lacrimal punctum dilation tube 20 from the sterile package, first inserts the longer needle body 10 through the plug-in portion 35, and connects its proximal end with the injection tube 14; then screws the shorter lacrimal punctum dilation tube 20 onto the fixing block 2 34 to complete the installation.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated lacrimal duct flushing needle, characterized in that: include: A needle body (10), wherein the needle body (10) has a proximal end and a distal end opposite to each other, a needle head (11) is formed at the distal end of the needle body (10), a plurality of flushing holes (12) are arranged on a side of the needle body (10) close to the needle head (11), a liquid channel (13) for circulating flushing liquid is formed in the needle body (10), and the plurality of flushing holes (12) are respectively connected to the liquid channel (13); a liquid injection tube (14) is connected at the proximal end of the needle body (10), and the liquid injection tube (14) is used to connect a syringe; A lacrimal punctum dilation tube (20), wherein the lacrimal punctum dilation tube (20) is movably connected to the needle body (10), and the lacrimal punctum dilation tube (20) also has a proximal end and a distal end relative to each other, and a lacrimal punctum dilation head (21) is provided at the distal end of the lacrimal punctum dilation tube (20); A handheld part (30) is provided with a sliding adjustment component (31) and a fixing component (32) respectively; the needle body (10) and the lacrimal punctum dilation tube (20) are fixed in the handheld part (30) via the sliding adjustment component (31) and the fixing component (32) respectively.

2. The integrated lacrimal duct flushing needle according to claim 1, characterized in that: The fixing assembly (32) comprises a fixing block 1 (33) and a fixing block 2 (34); a thread is provided at the proximal end of the lacrimal punctum dilation tube (20); the fixing block 1 (33) is fixedly connected to the inner wall of the handheld part (30); and the fixing block 2 (34) is threadedly connected to the proximal end of the lacrimal punctum dilation tube (20).

3. The integrated lacrimal duct flushing needle according to claim 2, characterized in that: The sliding adjustment component (31) comprises an inserting portion (35) and a pressing portion (36); the inserting portion (35) is provided with a through hole for the needle body (10) to pass through, and the inner wall of the through hole is a silicone layer; the proximal end of the needle body (10) passes through the inserting portion (35) and is connected to the injection tube (14).

4. The integrated lacrimal duct flushing needle according to claim 3, characterized in that: The pressing portion (36) comprises a pressing plate (37) connected to the plug-in portion (35), and a button (38) and a buckle (39) respectively connected to the pressing plate (37); The handheld portion (30) is respectively provided with a slide groove for the button (38) to slide axially along the handheld portion (30) and a plurality of clamping grooves (310), wherein the clamping grooves (310) are used to fix the buckle (39) and form a clamping relationship with the buckle (39).

5. The integrated lacrimal duct flushing needle according to claim 4, characterized in that: The upper end surface of the button (38) is provided with an anti-slip layer.

6. The integrated lacrimal duct flushing needle according to claim 1, characterized in that: The lacrimal punctum expansion head (21) is spherical, elliptical or gradually expanding.

7. The integrated lacrimal duct flushing needle according to claim 1, characterized in that: The needle body (10) and the lacrimal punctum dilation tube (20) are connected in an integral manner.

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