Novel lacrimal passage flushing needle head with expansion function

Abstract

The utility model relates to the technical field of lacrimal passage irrigation, and discloses a novel lacrimal passage irrigation needle head with an expansion function, which comprises a needle head main body and a needle main body, the needle main body is arranged at the end part of the needle head main body, an expansion cylinder is arranged at the end part of the needle main body, and the expansion cylinder is matched with the needle main body for use. The expansion cylinder is clamped at the end of the needle body, the first clamping block is clamped with the first clamping groove, clamped in the second clamping groove and then clamped in the third clamping groove, the expansion cylinder extrudes the first limiting ball during clamping, gas in the first limiting ball is pushed to the second limiting ball, the second limiting ball is clamped with the second clamping groove in a sliding mode, and the expansion cylinder is clamped in the third clamping groove. The expansion cylinder is aligned to the punctum of a patient, the punctum is expanded, the expansion cylinder is tightly combined with the needle body, and it is ensured that the expansion cylinder can be stable and does not move when inserted into the punctum. The replacement of the first dilation cylinder and the second dilation cylinder is beneficial to the adaptation of the punctum of different patients.

Description

Technical Field

[0001] This utility model relates to the field of lacrimal duct irrigation technology, specifically a novel lacrimal duct irrigation needle with dilation function. Background Technology

[0002] A lacrimal duct irrigation needle is a medical tool specifically designed for rinsing the lacrimal duct system, commonly used in ophthalmology or otolaryngology. Its primary function is to clear obstructions by rinsing the lacrimal duct, treating problems such as dacryocystitis, lacrimal duct stenosis, or blockage. Lacrimal duct irrigation needles are typically made of high-quality stainless steel, possessing excellent corrosion resistance and biocompatibility, ensuring no harm to the patient during use. The shape and size of this needle are designed perfectly for the lacrimal duct structure; it is usually thin and long, with a very sharp and precise tip for easy insertion into the lacrimal punctum. The needle tip may sometimes have a bevel or rounded edge to reduce tissue damage. A syringe or infusion tubing is usually attached to the end of the needle for injecting the irrigation solution, such as saline or an antibiotic-containing liquid, to clean and disinfect the lacrimal duct system. When using a lacrimal duct irrigation needle, the doctor or nurse will very carefully insert the needle into the patient's lacrimal punctum and then slowly inject the irrigation solution while observing the lacrimal duct's reaction and the drainage of fluid. The entire process usually requires a high degree of precision and patience to ensure effective irrigation and avoid damaging the lacrimal duct tissue.

[0003] Currently, when patients' tear drainage is obstructed, tears tend to accumulate on the surface of the eye, causing tearing, eye discomfort, and even lacrimal duct inflammation. During treatment, smaller lacrimal puncta may make it difficult for the lacrimal duct irrigation needle to smoothly flush the fluid into the lacrimal duct. Therefore, this does not meet the existing needs, and we have proposed a new type of lacrimal duct irrigation needle with dilation function. Utility Model Content

[0004] This invention provides a novel lacrimal duct irrigation needle with an expansion function, which has the beneficial effect of adapting to different lacrimal puncta of different patients. It solves the problem mentioned in the background art that when patients' tear drainage is obstructed, tear fluid is prone to accumulate on the surface of the eye, causing tearing, which may cause eye discomfort or even lacrimal duct inflammation. During treatment, smaller lacrimal puncta may make it difficult for the lacrimal duct irrigation needle to flush the fluid into the lacrimal duct smoothly.

[0005] This utility model provides the following technical solution: a novel lacrimal duct irrigation needle with dilation function, comprising a needle body and a needle body, wherein the needle body is installed at the end of the needle body, and an dilation cylinder is installed at the end of the needle body, the dilation cylinder being used in conjunction with the needle body.

[0006] As an alternative solution for the novel lacrimal duct irrigation needle with expansion function described in this utility model, wherein: the needle body is connected to a first engaging block on each side, the inner wall of the expansion cylinder is provided with a first engaging groove, and the first engaging block is slidably engaged with the first engaging groove.

[0007] As an optional solution for the novel lacrimal duct irrigation needle with expansion function described in this utility model, the first engaging groove is configured as a rectangular groove, the first engaging block is configured as a rectangular block, and the inner wall of the expansion cylinder is also provided with a second engaging groove, which is configured as a rectangular annular groove.

[0008] As an optional solution for the novel lacrimal duct irrigation needle with expansion function described in this utility model, the inner wall of the expansion cylinder is further provided with a third engaging groove, the third engaging groove is configured as a rectangular groove, and the first engaging groove, the second engaging groove and the third engaging groove are connected.

[0009] As an alternative solution for the novel lacrimal duct irrigation needle with expansion function described in this utility model, wherein: the first locking groove, the second locking groove and the third locking groove are respectively rotatably connected to the inside of the first locking groove, and a plurality of second rolling balls are connected to the side of the first locking block, and the first rolling balls and the second rolling balls are rotatably engaged.

[0010] As an alternative solution to the novel lacrimal duct irrigation needle with expansion function described in this utility model, wherein: a first water flow cavity is provided inside the needle body, and a water flow hole is provided on the side of the expansion cylinder, and the first water flow cavity and the water flow hole are connected.

[0011] As an optional solution for the novel lacrimal duct irrigation needle with expansion function described in this utility model, the needle body is provided with a first limiting ball and a second limiting ball on its side, the needle body has an air cavity inside, one end of the air cavity is connected to the side of the first limiting ball, the other end of the air cavity is connected to the side of the second limiting ball, the expansion cylinder has a locking groove body on its side, and the second limiting ball is slidably locked with the locking groove body.

[0012] As an alternative solution to the novel lacrimal duct irrigation needle with expansion function described in this utility model, the expansion cylinder includes a first expansion cylinder and a second expansion cylinder, which are used in conjunction with the needle body.

[0013] This utility model has the following beneficial effects:

[0014] 1. This novel lacrimal duct irrigation needle with expansion function, through the setting of the expansion tube, is locked at the end of the needle body. The first locking block locks with the first locking groove, locks with the inside of the second locking groove, and locks with the inside of the third locking groove. At the same time as locking, the expansion tube squeezes the first limiting ball, pushing the gas inside the first limiting ball to the second limiting ball. The second limiting ball slides and locks with the locking groove body, aligning the expansion tube with the patient's lacrimal punctum and expanding the lacrimal punctum. The expansion tube is tightly combined with the needle body through the multiple locking structure (first locking block, first locking groove, second locking groove, and third locking groove) to ensure that the expansion tube can be stably fixed and not shifted when inserted into the lacrimal punctum. The interchangeability of the first and second dilators facilitates adaptation to different patients' lacrimal puncta. This design prevents the dilator from accidentally sliding or detaching during the operation, ensuring the safety and success rate of the surgery. It also solves the problem that when patients' tear drainage is obstructed, tears can easily accumulate on the surface of the eye, causing tearing, eye discomfort, or even lacrimal duct inflammation. During treatment, smaller lacrimal puncta may make it difficult for the lacrimal duct irrigation needle to smoothly flush the fluid into the lacrimal duct.

[0015] 2. This novel lacrimal duct irrigation needle with dilation function utilizes a first ball bearing design. The first engaging block engages with the first engaging groove, then with the second engaging groove, and finally with the third engaging groove. Simultaneously, the first and second balls cooperate, significantly improving the smoothness and stability of the dilation tube's engagement. The rolling friction of the balls is lower than sliding friction, reducing operational resistance and making the dilation tube move more smoothly during engagement. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0018] Figure 3 This is a schematic diagram of the first expansion cylinder structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the expansion cylinder structure of this utility model.

[0020] Figure 5 This utility model Figure 2 A magnified structural diagram at point A.

[0021] Figure 6 This utility model Figure 5 A magnified structural diagram at point B.

[0022] Figure 7 This is a schematic diagram of the first expansion cylinder structure of this utility model.

[0023] Figure 8 This is a schematic diagram of the second expansion cylinder structure of this utility model.

[0024] In the diagram: 110, needle body; 120, needle body; 121, first locking block; 122, first locking groove; 123, second locking groove; 124, third locking groove; 131, first ball bearing; 132, second ball bearing; 133, first water flow cavity; 134, water flow hole; 140, first limiting ball; 141, second limiting ball; 150, expansion cylinder; 152, first expansion cylinder; 153, second expansion cylinder; 200, air cavity; 300, locking groove body. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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] Example 1: This example aims to address the issue of tear accumulation on the eye surface when tear drainage is obstructed, causing tearing, eye discomfort, and even lacrimal duct inflammation. During treatment, smaller lacrimal puncta may present challenges in successfully flushing fluid into the lacrimal duct using the lacrimal duct irrigation needle. Please refer to [link to relevant documentation]. Figure 1-8 A novel lacrimal duct irrigation needle with dilation function includes a needle body 110 and a needle body 120. The needle body 120 is installed at the end of the needle body 110, and a dilator 150 is installed at the end of the needle body 120. The dilator 150 is used in conjunction with the needle body 120.

[0027] The needle body 120 has first engaging blocks 121 connected to both sides. The inner wall of the expansion cylinder 150 has a first engaging groove 122, and the first engaging blocks 121 and the first engaging groove 122 are slidably engaged. The first engaging groove 122 is a rectangular groove, and the first engaging block 121 is a rectangular block. The inner wall of the expansion cylinder 150 also has a second engaging groove 123, which is a rectangular annular groove.

[0028] The inner wall of the expansion cylinder 150 is also provided with a third engaging groove 124, which is a rectangular groove. The first engaging groove 122, the second engaging groove 123, and the third engaging groove 124 are connected. The first engaging groove 122, the second engaging groove 123, and the third engaging groove 124 are respectively rotatably connected to the inside of the first engaging groove 122, the second engaging groove 123, and the third engaging groove 124. Several second engaging balls 132 are connected to the side of the first engaging block 121, and the first engaging balls 131 and the second engaging balls 132 are rotatably engaged.

[0029] The needle body 120 has a first water flow cavity 133 inside, and the expansion cylinder 150 has a water flow hole 134 on its side. The first water flow cavity 133 and the water flow hole 134 are connected. The expansion cylinder 150 includes a first expansion cylinder 152 and a second expansion cylinder 153. The first expansion cylinder 152, the second expansion cylinder 153 and the needle body 120 are used together. The diameter of the first expansion cylinder 152 is set to be larger than the diameter of the second expansion cylinder 153.

[0030] In this embodiment: the expansion cylinder 150 is engaged with the end of the needle body 120 by setting the expansion cylinder 150. The first engaging block 121 engages with the first engaging groove 122, engages inside the second engaging groove 123, and then engages inside the third engaging groove 124. At the same time as engagement, the expansion cylinder 150 squeezes the first limiting ball 140, pushing the gas inside the first limiting ball 140 towards the second limiting ball 141. The second limiting ball 141 engages with the engaging groove body 300 by sliding. The expansion cylinder 150 is aligned with the patient's lacrimal punctum to enlarge the lacrimal punctum. The expansion cylinder 150 is tightly combined with the needle body 120 through the multi-engagement structure of the first engaging block 121, the first engaging groove 122, the second engaging groove 123, and the third engaging groove 124, ensuring that the expansion cylinder 150 can be stably inserted into the lacrimal punctum without displacement. The interchangeability of the first dilator tube 152 and the second dilator tube 153 facilitates the adaptation of different patients' lacrimal puncta. This design avoids the dilator tube 150 from accidentally sliding or detaching during the operation, ensuring the safety and success rate of the surgery. It also solves the problem that when the patient's tear drainage is obstructed, tears may accumulate on the surface of the eye, causing tearing, eye discomfort, or even lacrimal duct inflammation. During treatment, smaller lacrimal puncta may make it difficult for the lacrimal duct irrigation needle to flush the liquid into the lacrimal duct smoothly.

[0031] Example 2 aims to improve upon Example 1 by addressing the issue of uneven sliding. For details, please refer to Example 1. Figure 1-8 The needle body 120 is provided with a first limiting ball 140 and a second limiting ball 141 on its side. An air cavity 200 is provided inside the needle body 120. One end of the air cavity 200 is connected to the side of the first limiting ball 140, and the other end of the air cavity 200 is connected to the side of the second limiting ball 141. An engagement groove body 300 is provided on the side of the expansion cylinder 150. The second limiting ball 141 is slidably engaged with the engagement groove body 300.

[0032] In this embodiment: With the first ball bearing 131, the first engaging block 121 engages with the first engaging groove 122, engages inside the second engaging groove 123, and then engages inside the third engaging groove 124. Simultaneously, the first ball bearing 131 and the second ball bearing 132 cooperate. The cooperation between the first ball bearing 131 and the second ball bearing 132 significantly improves the smoothness and stability of the engagement of the expansion cylinder 150. The rolling friction of the balls is less than the sliding friction, which reduces operating resistance, making the engagement of the expansion cylinder 150 smoother.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A new type of lacrimal passage flushing needle with expansion function, comprising a needle body (110) and a needle body (120), the needle body (120) is installed at the end of the needle body (110), characterized in that: An expansion tube (150) is installed at the end of the needle body (120), and the expansion tube (150) is used in conjunction with the needle body (120); The needle body (120) is connected to two sides by a first engaging block (121), and the inner wall of the expansion cylinder (150) is provided with a first engaging groove (122). The first engaging block (121) and the first engaging groove (122) are slidably engaged. The first engaging groove (122) is configured as a rectangular groove, the first engaging block (121) is configured as a rectangular block, and the inner wall of the expansion cylinder (150) is also provided with a second engaging groove (123), which is configured as a rectangular annular groove; The inner wall of the expansion cylinder (150) is also provided with a third engaging groove (124), which is a rectangular groove. The first engaging groove (122), the second engaging groove (123) and the third engaging groove (124) are connected.

2. The new type of lacrimal passage flushing needle head with expansion function according to claim 1, characterized in that: The first engagement groove (122), the second engagement groove (123) and the third engagement groove (124) are respectively rotatably connected to the first ball (131), and a number of second balls (132) are connected to the side of the first engagement block (121). The first ball (131) and the second ball (132) are rotatably engaged.

3. The new type of lacrimal passage flushing needle head with expansion function according to claim 1, characterized in that: The needle body (120) has a first water flow cavity (133) inside, and the expansion cylinder (150) has a water flow hole (134) on its side. The first water flow cavity (133) and the water flow hole (134) are connected.

4. The new type of lacrimal passage flushing needle head with expansion function according to claim 2, characterized in that: The needle body (120) is provided with a first limiting ball (140) and a second limiting ball (141) on its side. An air cavity (200) is provided inside the needle body (120). One end of the air cavity (200) is connected to the side of the first limiting ball (140), and the other end of the air cavity (200) is connected to the side of the second limiting ball (141). The expansion cylinder (150) is provided with a locking groove body (300) on its side. The second limiting ball (141) is slidably locked with the locking groove body (300).

5. The new type of dilating lacrimal irrigation needle according to claim 1, characterized in that: The expansion tube (150) includes a first expansion tube (152) and a second expansion tube (153), which are used in conjunction with the needle body (120).

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