Intraocular suture guide needle and assembly

Abstract

To provide an intraocular suture guide needle and assembly which provide good stability in thread fixation, reduce the risk of thread coming off, and cause little damage to tissue. [Solution] The intraocular suture guide needle includes a main body 1 and a handle 2, with the handle fixedly connected to the main body. The handle has a thread introduction hole 3 at its tip (the end away from the main body), and a hot melt window 4 in the handle. The hot melt window is connected to the thread introduction hole and is used when the electrocoagulation structure enters the thread introduction hole. The assembly includes an intraocular suture guide needle, and thread is introduced through the thread introduction hole and fixed by thermal welding using the electrocoagulation structure through the hot melt window, improving the stability of thread fixation and reducing the risk of thread detachment. Furthermore, the relative shape of the two threads reduces damage to tissue, resulting in excellent postoperative safety and minimal invasiveness.

Description

[Technical Field]

[0001] The present invention relates to the field of ophthalmic surgical instruments, and more particularly to intraocular suture guide needles and assemblies. [Background technology]

[0002] In recent years, with the increasing demand for ocular use and the aging population, the incidence of eye diseases has also increased year by year. In ophthalmic surgery, intraocular suture is an important step in treating diseases such as artificial crystal dislocation and iris damage.

[0003] Although conventional suture needles can meet the needs of different threads, their fastening methods are inferior. Conventional embroidery needle-type suture needles use an open needle-hole thread insertion method, which makes it easy for the thread to come loose during surgery, increasing the risk of surgery. Furthermore, when using relatively thick threads, the two threads become too thick, causing relatively severe damage to the tissue through which they pass. Some conventional suture needles are fastened using a crimping method (e.g., by pressing the needle tail to tighten the thread), but they may loosen after long-term use, and the requirements for the thread diameter are relatively high. Summary of the Invention [Problem to be solved by the invention]

[0004] In view of this, the object of the present invention is to provide an intraocular suture guide needle and assembly that provides stable suture fixation, reduces the number of threads that come off, and the relative two-strand configuration causes less damage to tissue. [Means for solving the problem]

[0005] The present invention provides an intraocular suture guide needle, which includes a body and a handle, the handle being fixedly connected to the body and having a thread guide hole at the end of the handle away from the body, and a hot melt window in the handle, which is connected to the thread guide hole and allows an electrocoagulation structure to enter the thread guide hole.

[0006] In one embodiment, the gripping portion includes a transition segment and a gripping segment, the gripping segment being connected to the body portion via the transition segment, and the cross sections of the transition segment and the gripping segment both have rounded rectangular shapes.

[0007] In one embodiment, the guide needle formed after the main body is connected to the gripping portion has an overall arc shape, and the arc angle of the entire guide needle is 90° to 135°.

[0008] In one embodiment, the hotmelt window has a trapezoidal shape, and the bottom of the hotmelt window approaches the body portion.

[0009] In one embodiment, the body portion contracts smoothly and transitionally from the end closest to the grip portion to the end away from the grip portion such that the end of the body portion away from the grip portion is needle-like.

[0010] The present invention further provides an intraocular suture guide needle assembly, which includes the intraocular suture guide needle according to any one of claims 1 to 5, and further includes an electrocoagulation structure and a thread, one end of the thread protruding into the thread introduction hole, and the electrocoagulation structure is used to protrude into the thread introduction hole through the hot melt window so as to fix the thread in the thread introduction hole by thermal welding. [Effects of the Invention]

[0011] The intraocular suture guide needle and assembly of the present invention has a thread introduction hole for thread entry. The electrocoagulation structure, which enters through a hot melt window, allows the thread to be thermally welded and fixed within the thread introduction hole, providing stable thread fixation and reducing the risk of the thread coming off. The relative two-strand configuration also reduces damage to tissue. [Brief explanation of the drawings]

[0012] In order to more clearly explain the technical solutions of the embodiments of the present invention, the following briefly introduces the accompanying drawings that need to be used in the embodiments. It should be understood that the following accompanying drawings only illustrate some embodiments of the present invention, and should not be considered as limiting the scope. Those skilled in the art can also obtain other related accompanying drawings based on these accompanying drawings without any creative efforts. [Figure 1] 1 is a schematic diagram of the structure of an intraocular suture guide needle according to a first embodiment of the present invention; [Figure 2] 1 is a schematic cross-sectional view of a gripping portion of an intraocular suture guide needle according to a first embodiment of the present invention; [Figure 3] 1 is a schematic diagram of the arc angle of the intraocular suture guide needle according to the first embodiment of the present invention; [Figure 4] 1 is a structural schematic diagram of an intraocular suture guide needle assembly according to a second embodiment of the present invention; [Figure 5] 1 is a schematic assembly diagram of an intraocular suture guide needle assembly according to the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0013] The following describes in detail specific embodiments of the present invention in combination with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, and do not represent all of the embodiments. Based on the description of the present invention, all other embodiments obtained by those skilled in the art without any creative effort are all within the scope of protection of the present invention.

[0014] In the description of the present invention, the terms "install," "mount," "connect," etc. should be understood in a broad sense unless otherwise expressly specified or limited. For example, they may refer to a fixed connection, a detachable connection, or an integral connection. They may be directly connected or indirectly connected via an intermediate medium. Those skilled in the art will be able to understand the specific meaning of the above terms according to the specific circumstances.

[0015] The directions or positional relationships indicated by the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," etc. are those shown in the accompanying drawings or are those generally disposed when the invented product is in use. These are for ease and simplicity of description only. They do not indicate or suggest that the indicated devices or elements must have a particular orientation or be constructed or operated in a particular orientation, and therefore should not be construed as limitations on the present invention.

[0016] The terms "comprise," "include," or any other variation thereof are also intended to cover an inclusive "include," which may include not only the listed elements but also other elements not expressly listed.

[0017] Example 1 Referring to Figure 1, the intraocular suture guide needle of this embodiment includes a main body 1 and a handle 2, the handle 2 is fixedly connected to the main body 1, and a thread introduction hole 3 is opened at the end of the handle 2 away from the main body 1, and a hot melt window 4 is further opened in the handle 2, and the hot melt window 4 is connected to the thread introduction hole 3 and is used to insert an electrocoagulation structure 6 into the thread introduction hole 3.

[0018] As can be seen, the size of the handle 2 gradually decreases from the end away from the main body 1 toward the needle tip of the main body 1. When performing suturing, one of the threads 5, ranging from 4-0 to 10-0, can be selected according to actual needs. The thread 5 can be polypropylene. After the thread 5 is passed through the thread introduction hole 3, the electrocoagulation structure 6 enters the thread introduction hole 3 through the hot melt window 4 and comes into contact with the thread 5. The thread 5 is then thermally bonded to the thread introduction hole 3, and the thermally bonded thread 5 expands to form a nodule, thereby securing it to the thread introduction hole 3. The electrocoagulation structure 6 can be an electrocoagulation pen, which is commonly found in hospitals. The inner wall of the thread introduction hole 3 can be silver-plated to improve the thermal conductivity of the inner wall surface of the thread introduction hole 3, thereby achieving excellent thermal bonding of the thread 5. When suturing, first, the gripping part 2 is grasped by the needle clamp, and then the main body part 1 penetrates the tissue that needs to be sutured. After the main body part 1 has penetrated partially, the needle clamp grasps the part that the main body part 1 will penetrate, so that the gripping part 2 and thread 5 also penetrate the tissue that needs to be sutured. Finally, the needle is moved back and forth to achieve suturing of the tissue. Both the main body part 1 and the gripping part 2 can be made of medical 316L stainless steel bar material, with a tensile strength of 520 MPa or more.

[0019] Referring to Figures 1 and 2, in some embodiments, the gripping portion 2 includes a transition segment 201 and a gripping segment 202, the gripping segment 202 is connected to the main body portion 1 via the transition segment 201, and the cross sections of the transition segment 201 and the gripping segment 202 are both rounded rectangular.

[0020] As can be seen, the transition segment 201 and the gripping segment 202 may be an integral structure, and the transition segment 201 is used to provide a gradation from the main body 1 to the gripping segment 202, which is a gradation transition of mechanical properties, and can eliminate stress concentration caused by a sudden change in cross section and reduce pushing resistance. The gripping segment 202 can be rounded rectangular to facilitate and stabilize gripping, and the rounded rectangular shape can have two parallel flat surfaces and two other symmetrical surfaces that are arc surfaces.

[0021] Referring to Figure 3, in some embodiments, the guide needle formed after the main body portion 1 and the grip portion 2 are connected has an overall arc shape, and the arc angle α of the entire guide needle is 90° to 135°.

[0022] As we know, ophthalmic suturing procedures (such as corneal transplants, cataract repair, and eyelid repair) are always performed within a narrow anatomical space. A 90°-135° radian needle can better adapt to the curvature of the eyeball, helping doctors more stably control the depth and spacing of the sutures on the ocular tissue, reducing the collision between the instrument and the tissue, reducing the traction on the fragile ocular tissue, and lowering the risk of postoperative inflammation or scarring.

[0023] Referring to FIG. 1, in some embodiments, the hot melt window 4 has a trapezoidal shape, and the lower base of the hot melt window 4 approaches the main body 1 .

[0024] As can be seen, the trapezoid includes two parallel sides, a base and a lower base, and the length of the upper base is smaller than that of the lower base. When pulled during the suturing operation, the nodule moves closer to the upper base, which can effectively reduce the risk of the thread 5 coming off the hot melt window 4.

[0025] Referring to FIG. 1, in some embodiments, the main body 1 contracts smoothly and transitionally from the end closest to the gripping portion 2 to the end farther from the gripping portion 1, so that the end of the main body 1 farther from the gripping portion 2 has a needle-like shape.

[0026] As can be seen, the main body 1 smoothly and gradually shrinks from the end approaching the handle 2 to the end away from the handle 2, i.e., the size smoothly decreases, and the needle tip of the main body 1 is designed to be an O-shaped needle tip, which effectively reduces tissue damage and enables gentle puncture of fine tissue, ensuring puncture efficiency while also ensuring puncture safety.

[0027] Example 2 4 and 5, this embodiment provides an intraocular suture guide needle assembly, which includes the above-mentioned intraocular suture guide needle, and further includes an electrocoagulation structure 6 and a thread 5, one end of the thread 5 protruding into the thread introduction hole 3, and the electrocoagulation structure 6 protruding into the thread introduction hole 3 through the hot melt window 4 so as to heat-seal and fix the thread 5 in the thread introduction hole 3.

[0028] As can be understood, the thread 5 can be selected according to the needs of the suture tissue, the thread introduction hole 3 can be shaped to fit the thread, the thread introduction hole 3 can be cylindrical, and the electrocoagulation structure 6 can adopt an electrocoagulation pen. For the combined use of the electrocoagulation pen and the thread 5, please refer to the description in Example 1.

[0029] From the above description, it can be seen that the intraocular suture guide needle and assembly of the present invention is used to introduce a thread by providing a thread introduction hole 3, and the hot melt window 4 is inserted into the electrocoagulation structure 6, and the thread 5 is thermally fused and fixed within the thread introduction hole 3, which provides good fixation stability for the thread 5, reduces the risk of the thread coming off, and the relative shape of the two threads causes less damage to tissue.

[0030] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto, and any modifications or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present invention shall be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be governed by the appended claims.

Claims

1. An intraocular suture guide needle comprising: a main body portion; and a grip portion, the grip portion being fixedly connected to the main body portion; a thread introduction hole being opened at an end of the grip portion away from the main body portion; a hot melt window being further opened in the grip portion; the hot melt window being in communication with the thread introduction hole; and an electrocoagulation structure being used to enter the thread introduction hole.

2. The intraocular suture guide needle according to claim 1, characterized in that the gripping portion includes a transition segment and a gripping segment, the gripping segment is connected to the main body portion via the transition segment, and the cross sections of the transition segment and the gripping segment both have rounded rectangular shapes.

3. The intraocular suture guide needle according to claim 1, characterized in that the guide needle formed after the main body portion is connected to the grip portion has an overall arc shape, and the arc angle of the entire guide needle is 90° to 135°.

4. The intraocular suture guide needle according to claim 1, wherein the hot melt window has a trapezoidal shape, and a bottom of the hot melt window is close to the main body portion.

5. 2. The intraocular suture guide needle according to claim 1, wherein the main body portion contracts smoothly and transitionally from the end closest to the grip portion toward the end remote from the grip portion so that the end remote from the grip portion has a needle tip shape.

6. 6. An intraocular suture guide needle assembly, comprising the intraocular suture guide needle according to claim 1, further comprising an electrocoagulation structure and a thread, one end of the thread protruding into the thread introduction hole, and the electrocoagulation structure being used to protrude into the thread introduction hole through the hot melt window so as to fix the thread by thermal welding within the thread introduction hole.

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