Meniscus guide suturing device

Abstract

The invention provides a meniscus guiding suturing device, and belongs to the field of surgical instruments. The guider comprises a handle and a guide pipe fixed at the front end of the handle, and the tail end of the handle is provided with a channel communicated with the guide pipe; and the front end part of the guide needle is provided with a line carrying hole through which a suture line can pass, and the guide needle has the size that the line carrying hole can be exposed after passing through the channel and the guide tube at the same time. The device integrates the advantages of an existing stitching instrument, not only has the advantage of one-needle and one-thread stitching of a lumbar puncture needle and a bevel needle head, but also has the advantage of convenience in operation of instruments used by a Fast-Fix 360 meniscus stitching system and other total internal stitching technologies, and is low in price and capable of being reused after being disinfected.

Description

Technical Field

[0001] The present disclosure relates to the technical field of surgical instruments, and in particular to a meniscus guiding suturing device. Background Art

[0002] Meniscal repair is a common surgical procedure for meniscal tears, aiming to restore meniscal structure and function, reduce pain, and slow joint degeneration. During meniscal surgery, the healable portion of the meniscus (red and white zones) should be repaired as much as possible, while preserving excess meniscal tissue. Based on the suturing direction, these techniques can be categorized as inside-out, outside-in, and all-inside. The inside-out technique allows for vertical or horizontal mattress suturing of the meniscus under direct arthroscopic visualization and is considered the "gold standard" for meniscal repair by many surgeons. However, to avoid vascular and nerve damage, the inside-out technique requires an additional posterior incision and subcutaneous tissue dissection, increasing trauma and operative time. Furthermore, a trained assistant is required for suture removal and knotting. The outside-in technique eliminates the need for a posterior incision, but significantly limits operative space when suturing the posterior third of the meniscus, making vertical mattress suturing more challenging. The first two techniques do not require special complex instruments, only simple instruments such as MMⅡ suture devices are needed. However, there is no guiding auxiliary equipment during the operation, the operation is difficult, and the operation time is long. The all-inside suturing technology is an advanced method used in arthroscopic minimally invasive surgery to repair the meniscus or reconstruct ligaments (such as the anterior cruciate ligament). Its core feature is that all operations are completed within the joint, without the need for additional auxiliary incisions, which significantly reduces surgical trauma and the risk of complications. The main disadvantage of the all-inside suturing technology is that it is not very economical. Suturing instruments (such as the FAST-FIX 360 meniscus repair system) are disposable medical consumables, costing about 5,000 yuan per needle, which is expensive and increases the burden on patients. Summary of the Invention

[0003] The main purpose of the present disclosure is to provide a meniscus guide suturing device to solve or partially solve the technical problems mentioned in the background art. To this end, the present disclosure provides the following technical solutions:

[0004] A meniscus guiding suturing device, comprising:

[0005] The guide comprises a handle and a guide tube fixed to the front end of the handle, wherein the rear end of the handle is provided with a passage communicating with the guide tube;

[0006] The guide needle has a thread hole at its front end for passing the suture thread, and has a size that allows the thread hole to be exposed after passing through the channel and the guide tube at the same time.

[0007] In one or more embodiments, the front end portion of the guide tube is bent and has an angle of 5°-30° with the axis of the guide tube. Preferably, the angle between the bent portion of the front end portion of the guide tube and the axis is 30°.

[0008] In one or more embodiments, the channel is in the shape of a stepped hole, which includes a first part located at the front end of the handle and with a hole diameter equal to the outer diameter of the guide tube, and a second part located at other parts of the handle and with a hole diameter equal to the inner diameter of the guide tube; the tail end of the guide tube is fixedly inserted into the first part of the channel.

[0009] In one or more embodiments, the handle is 8 cm long; the portion of the guide tube exposed at the front end of the handle is 20 cm long, has an outer diameter of 3 mm, and an inner diameter of 2 mm; and the guide needle is 30 cm long and has a diameter of 1.5 mm.

[0010] In one or more embodiments, the wire hole is 1 cm away from the front end of the guide needle and has a hole diameter of 1 mm.

[0011] In one or more embodiments, the front end of the guide tube is an oblique opening; the front end of the guide needle is a pointed end.

[0012] In one or more embodiments, the guide tube and the guide needle are made of alloy material, for example, stainless steel or titanium alloy. The handle is made of wood.

[0013] The present disclosure can achieve at least the following beneficial effects:

[0014] Since single stitch is still the most effective meniscus suturing method, outside-in or inside-out meniscus suturing methods are currently commonly used in clinical practice. The meniscus guide suturing device provided by the present invention greatly simplifies the difficulty of outside-in or inside-out suturing, is conducive to operation under a narrow knee arthroscopy, shortens the operation and hospitalization time, reduces surgical complications, and reduces the economic burden on patients and medical insurance, which is in line with the development direction of minimally invasive and precise surgery. Moreover, the device has a simple structure, is inexpensive to manufacture, and can be reused after disinfection, greatly reducing the cost of use and the burden on patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] One or more embodiments of the present disclosure will now be described, by way of example only, with reference to the accompanying drawings, in which:

[0016] Figure 1 This is a structural schematic diagram of the guide and guide needle in a separated state according to an embodiment of the present disclosure;

[0017] Figure 2 This is a structural diagram of the guide and guide needle assembly state according to an embodiment of the present disclosure;

[0018] Figure 3 for Figure 2 A partial enlarged view of area A in the middle;

[0019] Figure 4 2 is a cross-sectional view of a handle according to an embodiment of the present disclosure.

[0020] The numbers in the figure are: 100, guide; 110, handle; 111, channel; 120, guide tube; 200, guide needle; 210, wire hole. DETAILED DESCRIPTION

[0021] The present disclosure will be described in detail below with reference to the exemplary embodiments shown in the accompanying drawings. However, it should be understood that the present disclosure can be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. These embodiments are provided herein to make the disclosure more complete and to fully convey the concepts of the present disclosure to those skilled in the art.

[0022] In the description of the present disclosure, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present disclosure.

[0023] like Figure 1-3 As shown, the meniscus guide suturing device of the embodiment of the present disclosure includes a guide 100 and a guide needle 200. The guide 100 includes a handle 110 and a guide tube 120 fixed to the front end of the handle 110. The rear end of the handle 110 is provided with a channel 111 connected to the guide tube 120. The front end of the guide needle 200 is provided with a thread hole 210 through which the suture thread can pass, and has a size that can simultaneously pass through the channel 111 and the guide tube 120 to expose the thread hole 210. The front end of the guide tube 120 is an oblique opening; the front end of the guide needle 200 is a pointed tip.

[0024] Regarding the size of the device, the present disclosure provides a specific embodiment. The front end of the guide tube 120 is curved and forms an angle of 5°-30° with the axis of the guide tube 120, preferably 30°; the tilted front end facilitates adjustment of the entry and exit of the guide needle 200. The handle 110 is 8 cm long; the portion of the guide tube 120 exposed at the front end of the handle 110 is 20 cm long, with an outer diameter of 3 mm and an inner diameter of 2 mm; the guide needle 200 is 30 cm long and has a diameter of 1.5 mm. The wire hole 210 is 1 cm from the front end of the guide needle 200 and has a hole diameter of 1 mm.

[0025] Instructions for use: Used under arthroscopy, the guide needle 200 passes through the guide 100 from the tail end of the handle 110, and the suture thread (such as No. 2 Aixibang suture) is passed through the thread hole 210 of the guide needle 200. The inclination angle of the front end of the guide tube 120 is used to adjust the direction of needle insertion and withdrawal to complete outside-in or inside-out suturing. A small incision is made on the outside of the skin, and the suture knot is tied outside the joint capsule.

[0026] The above structure overcomes the time-consuming and labor-intensive operation problems of using a lumbar puncture needle and a bevel needle for outside-in or inside-out suturing, which have no handle and distal guide. At the same time, a 1mm thread-passing hole is designed about 1 cm away from the tip of the guide needle. After puncture and thread passing, the suture can be directly tied, eliminating the thread-changing step and greatly saving operation time.

[0027] Regarding the material of the device, the guide tube 120 and the guide needle 200 should be made of alloy materials. Obviously, the alloy material used should have the characteristics of corrosion resistance and safety for the human body. Referring to other surgical instruments, the guide tube 120 and the guide needle 200 can be made of stainless steel or titanium alloy. The stainless steel includes 316L austenitic stainless steel, 420 martensitic stainless steel, 1Cr18Ni9Ti / 12Cr18Ni9Ti, etc.; stainless steel also has the advantages of high temperature resistance, easy surface polishing, and reduced bacterial adhesion. The titanium alloy can be selected from Ti-6Al-4V titanium alloy, etc. This type of material is lightweight (40% lighter than stainless steel), can reduce doctor's hand fatigue, and has excellent biocompatibility, is non-toxic to long-term contact with tissues, and is safe for the human body. The material of the handle 110 should be wood; wood is easy to process, light and inexpensive. The wood material refers to a material containing wood fiber, which may include natural wood materials (such as hardwoods such as oak and sandalwood, softwoods such as pine and birch, and bamboo can also be considered as natural wood materials), and may also include artificial wood materials (such as modified wood with antibacterial properties); the handle 110 may also contain other materials, for example, the channel 111 uses the same alloy material as the guide tube 120 and the guide needle 200.

[0028] In this way, the entire device can be sterilized and reused repeatedly, greatly reducing the cost of use and the economic burden on patients. The meniscus guided suturing device also combines the advantages of existing suturing devices, with the advantages of lumbar puncture and bevel needle one-stitch suturing, as well as the advantages of easy operation of instruments used in full-internal suturing technologies such as the Fast-Fix 360 meniscus suturing system. It is also inexpensive and can be reused after sterilization.

[0029] In a specific embodiment, reference Figure 4 The present disclosure also provides a connection method for the handle 110 and the guide tube 120. The channel 111 is in the shape of a stepped hole, comprising a first portion (i.e., a large-diameter portion) located at the front end of the handle 110 and having an aperture equal to the outer diameter of the guide tube 120, and a second portion (i.e., a small-diameter portion) located elsewhere on the handle 110 and having an aperture equal to the inner diameter of the guide tube 120. The tail end of the guide needle 200 is fixedly inserted into the first portion of the channel 111. This connection method ensures a stable connection between the guide tube 120 and the handle 110, while also ensuring a smooth transition between the channel 111 and the guide tube 120, facilitating the smooth guidance of the guide needle 200.

[0030] It should be understood that all the above embodiments are illustrative rather than restrictive, and various modifications or variations made by those skilled in the art to the specific embodiments described above based on the concept of the present disclosure should be within the scope of protection of the present disclosure.

Claims

1. A meniscus guide suturing device, characterized in that: include: The guide (100) comprises a handle (110) and a guide tube (120) fixed to the front end of the handle (110), wherein the rear end of the handle (110) is provided with a channel (111) communicating with the guide tube (120); The guide needle (200) has a thread hole (210) at its front end for passing a suture thread, and has a size that allows the thread hole (210) to be exposed after passing through the channel (111) and the guide tube (120) at the same time.

2. The meniscus guiding suturing device according to claim 1, characterized in that: The front end portion of the guide tube (120) is bent and has an angle of 5°-30° with the axis of the guide tube (120).

3. The meniscus guiding suturing device according to claim 2, characterized in that: The angle between the curved portion of the front end of the guide tube (120) and the axis is 30°.

4. The meniscus guiding suturing device according to claim 1, characterized in that: The channel (111) is in the shape of a stepped hole, comprising a first portion located at the front end of the handle (110) and having a hole diameter equal to the outer diameter of the guide tube (120), and a second portion located at other portions of the handle (110) and having a hole diameter equal to the inner diameter of the guide tube (120); the tail end of the guide tube (120) is fixedly inserted into the first portion of the channel (111).

5. The meniscus guiding suturing device according to claim 1, characterized in that: The handle (110) is 8 cm long; the portion of the guide tube (120) exposed at the front end of the handle (110) is 20 cm long, has an outer diameter of 3 mm, and an inner diameter of 2 mm; the guide needle (200) is 30 cm long and has a diameter of 1.5 mm.

6. The meniscus guiding suturing device according to claim 1, characterized in that: The wire hole (210) is 1 cm away from the front end of the guide needle (200) and has a hole diameter of 1 mm.

7. The meniscus guiding suturing device according to claim 1, characterized in that: The front end of the guide tube (120) is an oblique opening; the front end of the guide needle (200) is a pointed end.

8. The meniscus guiding suturing device according to claim 1, characterized in that: The guide tube (120) and the guide needle (200) are made of alloy material.

9. The meniscus guiding suturing device according to claim 1, characterized in that: The guide tube (120) and the guide needle (200) are made of stainless steel or titanium alloy.

10. The meniscus guiding suturing device according to claim 1, characterized in that: The handle (110) is made of wood.

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