Fiber ring suturing device

Abstract

The invention relates to the technical field of medical instruments, and discloses a fiber ring suturing device which comprises a suture, a suturing needle and a pushing rod which are used in cooperation, the pushing rod comprises a rod body and a pushing piece, the rod body is located in the suturing needle, a sliding groove is formed in one side of the rod body in the length direction, and a first notch is formed in the bottom of the rod body; the first notch is used for clamping a T-shaped thread knot of a suture and pushing the T-shaped thread knot to the needle point of the suture needle; the pushing part is connected to the sliding groove in a sliding mode, and after the T-shaped thread knot is pushed to the needle point of the suture needle, the pushing part slides towards the needle point of the suture needle along the sliding groove and pushes the suture line above the T-shaped thread knot to move towards the needle point, so that the T-shaped thread knot is pushed out of the opening in the needle point of the suture needle. By arranging the rod body and the pushing piece, the suture cannot be accumulated in the suture needle, the T-shaped suture knot can completely stretch out of the opening of the needle point of the suture needle to enter the fiber ring, and the success rate of suture of the fiber ring is increased.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, and in particular to a fiber ring suturing device. Background Art

[0002] At present, the fiber ring suture device and its related technologies in spinal endoscopy have emerged and been applied in the past three years. In the past, after the protruding nucleus pulposus was removed by transforaminal endoscopic lumbar disc herniation, there would be a hole in the fiber ring. Later, the remaining normal nucleus pulposus tissue may protrude through the fiber ring hole again and compress the spinal nerves, causing patients to have related neurological symptoms. In order to solve this problem, the fiber ring suture technology under spinal endoscopy came into being. By suturing the fiber ring hole under the endoscopic field of view during the operation, the fiber ring hole is closed and the possibility of nucleus pulposus protruding from the hole again in the later stage is reduced. The application of the fiber ring suture device under spinal endoscopy makes it possible to repair the intervertebral disc under minimally invasive technology and prevent the recurrence of lumbar herniation with minimally invasive surgery.

[0003] Existing fiber ring suturing devices usually include: a curved needle and a straight needle. When suturing the fiber ring, the curved needle is first inserted into one side of the fiber ring, and then the knob is turned to insert the straight needle from the other side, and then the suture is sent from the curved needle into the needle hole of the straight needle, and then the straight needle is pushed out, the suturer is pulled out, the suture is knotted, and the suture is cut short to complete the suturing. Although this fiber ring suturer can complete the suturing of the fiber ring, it can only suture fiber ring ruptures of a specific size, and the suture is prone to failure when entering the needle hole of the straight needle from the curved needle during operation, and multiple operations may be required to complete the suturing.

[0004] Some fiber ring suturing devices also include two suture needles, two sutures with T-shaped knots placed in the two suture needles respectively, and a pushing rod for pushing the sutures out. The suture needle is a hollow structure with an opening at the needle tip of the suture needle. The needle tip of the suture needle is arc-shaped to make it easier for the suture needle to enter the fiber ring. When suturing the fiber ring, first insert a suture needle into one side of the fiber ring, push the suture into the fiber ring with the pushing rod, pull out the suture needle, insert another suture needle into the other end of the fiber ring, push the suture into the fiber ring with the pushing rod, pull out the suture needle, and then use a knot pusher to tie the two sutures, cut the suture to complete the suturing. The above-mentioned fiber ring suturing device makes the suturing of the fiber ring simpler and easier to complete the suturing in one time. However, the sutures used for suturing the annulus fibrosus are made of bioabsorbable materials, such as medical polyketides or other bioabsorbable materials, to ensure that they will not be rejected during the healing process and that no additional suture removal surgery is required. Such sutures are usually relatively soft, and because the tip of the suture needle has an arc, when the push rod pushes the suture out, the push rod will not extend out of the suture needle into the fibrous annulus, and the push rod can only reach the tip of the suture needle. Therefore, the suture may accumulate in the suture needle or the T-shaped knot may not be completely pushed out of the opening of the suture needle tip. When the suture needle is pulled out, the suture may be pulled out along with the suture needle, causing suture failure and requiring re-suture. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a fiber ring suturing device, which can prevent the suture from piling up in the suturing needle and improve the success rate of the fiber ring suturing.

[0006] The present invention provides a fiber ring suturing device, comprising a suture and a suture needle, and also comprising: a pushing rod used in conjunction with the suture and the suture needle, the pushing rod comprising: a rod body and a pushing member, the rod body is located in the suture needle, a sliding groove is provided on one side of the rod body along the length direction, a first notch is provided at the bottom of the rod body, the first notch is used to clamp the T-shaped knot of the suture and push it to the needle tip of the suture needle; the pushing member is slidably connected to the sliding groove, when the T-shaped knot is pushed to the needle tip of the suture needle, the pushing member slides along the sliding groove toward the needle tip of the suture needle, and the pushing member pushes the suture above the T-shaped knot to move toward the needle tip, so as to push the T-shaped knot out of the opening at the needle tip of the suture needle.

[0007] Optionally, the pushing member includes a pushing block and a pushing rod, one end of the pushing block is slidably connected to the slide groove, the other end of the pushing block is provided with a second notch (3100), one end of the pushing rod is connected to the pushing block, and the other end of the pushing rod extends out of the rod body.

[0008] Optionally, the first notch of the pushing block is arranged in an inclined direction.

[0009] Optionally, the included angle between the pushing block and the rod body is 30°.

[0010] Optionally, the push rod further includes a limit block, which is 5 cm-8 cm away from the bottom of the rod body, and is used to limit the initial position of the push block.

[0011] Optionally, the first notch and the second notch (3100) are both rounded corners.

[0012] Optionally, the length of the push rod is greater than the length of the rod body: 3cm-5cm.

[0013] Optionally, the horizontal bar on the T-shaped knot of the suture is provided with blunt wavy serrations.

[0014] Optionally, the inner diameter of the suture needle is 0.5 mm, and the diameter of the rod is 0.3 mm-0.4 mm.

[0015] Optionally, the length of the suture needle is 30 cm, and the length of the rod is 33 cm-35 cm.

[0016] The technical solution provided by the embodiment of the present invention has the following advantages compared with the prior art:

[0017] A fiber ring suturing device provided by an embodiment of the present invention includes: a suture, a suture needle and a push rod for use together, the push rod includes a rod body and a pusher, and a first notch is set at the bottom of the rod body, so that the T-shaped knot of the suture can be stuck, and when the rod body is pushed toward the suture needle, the suture can be driven downward until the rod body reaches the needle tip of the suture needle, at which time the T-shaped knot of the suture is driven to the needle tip of the suture needle, and then the pusher slides along the slide groove toward the needle tip of the suture needle, pushing the suture above the T-shaped knot to move toward the needle tip, so as to completely push the T-shaped knot out of the opening at the needle tip of the suture needle. By setting the rod body and the pusher, the suture will not be accumulated in the suture needle, and the T-shaped knot can be completely extended out of the opening of the needle tip of the suture needle into the fiber ring, thereby improving the success rate of fiber ring suturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a suture in a fiber ring suture device provided in an embodiment of the present invention;

[0019] Figure 2 A cross-sectional view of a suture needle in a fiber ring suture device provided by an embodiment of the present invention;

[0020] Figure 3 A front view of a push rod in a fiber annulus suturing device provided by an embodiment of the present invention;

[0021] Figure 4 It is a front view of another embodiment of the pusher;

[0022] Figure 5 A side view of a push rod in a fiber ring suturing device provided by an embodiment of the present invention;

[0023] Figure 6 A schematic diagram of the structure of a fiber ring suturing device provided by an embodiment of the present invention during use;

[0024] Figure 7 for Figure 6 A schematic diagram of the enlarged local structure of the A area in the middle;

[0025] Figure 8 for Figure 6 Schematic diagram of the enlarged local structure of area B in the middle.

[0026] Description of reference numerals:

[0027] 1. Suture; 10. T-knot; 100. Blunt wavy sawtooth; 2. Suture needle; 3. Push rod; 30. Rod body; 300. First notch; 301. Slide groove; 31. Push member; 3100. Second notch; 310. Push block; 312. Push rod; 313. Threaded rod; 314. Threaded sleeve; 32. Limit block. DETAILED DESCRIPTION

[0028] A specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation.

[0029] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the technical solutions of the present invention 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 cannot be understood as a limitation on the present invention.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] In addition, in the description of the present invention, "plurality" means two or more than two. The terms "first" and "second" are used for descriptive purposes only and should not be understood as suggesting or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the feature.

[0032] The present invention is described below by several specific embodiments. In order to keep the following description of the embodiments of the present invention clear and concise, the detailed description of known functions and known components may be omitted. When any component of the embodiments of the present invention appears in more than one accompanying drawings, the component may be represented by the same reference numeral in each of the accompanying drawings.

[0033] Reference Figures 1 to 8 , Figure 1 A schematic diagram of the structure of a suture in a fiber ring suture device provided by an embodiment of the present invention, Figure 2 A cross-sectional view of a suture needle in a fiber ring suture device provided by an embodiment of the present invention, Figure 3 A front view of a push rod in a fiber ring suturing device provided by an embodiment of the present invention, Figure 4 This is a front view of another embodiment of the pusher. Figure 5 A side view of a push rod in a fiber ring suturing device provided by an embodiment of the present invention, Figure 6 A schematic diagram of the structure of a fiber ring suture device provided by an embodiment of the present invention during use, Figure 7 for Figure 6 A schematic diagram of the enlarged local structure of the A area in the middle. Figure 8 for Figure 6 A schematic diagram of the enlarged local structure of area B in the middle. Figures 1 to 6 As shown, an embodiment of the present invention provides a fiber ring suturing device, including a suture 1 and a suture needle 2, one end of the suture 1 is a T-shaped knot 10, the suture needle 2 is a hollow structure, and the bottom of the suture needle 2 has an opening, and also includes: a pushing rod 3 used in conjunction with the suture 1 and the suture needle 2, the pushing rod 3 includes: a rod body 30 and a pushing member 31, the rod body 30 is located in the suture needle 2, one side of the rod body 30 is provided with a slide groove 301 along the length direction, and the bottom of the rod body 30 has a first notch 300, the first notch 300 is used to clamp the T-shaped knot 10 of the suture 1 and push it to the needle tip of the suture needle 2, the pushing member 31 is slidably connected to the slide groove 301, when the T-shaped knot 10 is pushed to the needle tip of the suture needle 2, the pushing member 31 slides along the slide groove 301 toward the needle tip of the suture needle 2, and the pushing member 31 pushes the suture 1 above the T-shaped knot 10 to move toward the needle tip, so as to push the T-shaped knot 10 out of the opening at the needle tip of the suture needle 2.

[0034] By setting a first notch 300 at the bottom of the rod body 30, the T-shaped knot 10 of the suture 1 can be stuck, and when the rod body 30 is pushed toward the suture needle 2, the suture 1 can be driven downward until the rod body 30 reaches the needle tip of the suture needle 2. At this time, the T-shaped knot 10 of the suture 1 is driven to the needle tip of the suture needle 2, and then the pusher 31 slides along the slide groove 301 toward the needle tip of the suture needle 2, pushing the suture 1 above the T-shaped knot 10 to move toward the needle tip, so as to completely push the T-shaped knot 10 out of the opening at the needle tip of the suture needle 2. By setting the rod body 30 and the pusher 31, the suture 1 will not be accumulated in the suture needle 2, and the T-shaped knot 10 can completely extend out of the opening of the needle tip of the suture needle 2 to enter the fiber ring, thereby improving the success rate of fiber ring suture.

[0035] When the fiber ring needs to be sutured, the T-shaped knot 10 of the suture 1 is placed at the first notch 300, and the first notch 300 is used to clamp it, and the pusher 31 abuts against the suture 1 above the T-shaped knot 10, and the suture 1 and the push rod 3 are both located in the suture needle 2. After the suture needle 2 pierces the fiber ring, the rod body 30 is pushed inward, and when it cannot be pushed, that is, it has reached the needle tip of the suture needle 2, the pusher 31 is slid downward along the slide groove 301, so that the T-shaped knot 10 is completely extended out of the suture needle 2 and enters the fiber ring. During the downward movement of the pusher 3, the first notch 300 clamps the T-shaped knot 10 downward, so that the suture 1 will not accumulate in the suture needle 2, and the suture needle 2 can be smoothly pushed out, and the pusher 31 abuts against the suture 1 above the T-shaped knot 10, and the pusher 31 moves along the slide groove 301, so that the T-shaped knot 10 is completely extended out of the opening of the needle tip of the suture needle 2 and enters the fiber ring, thereby improving the success rate of the fiber ring suture.

[0036] Refer again Figure 3 The pushing member 31 includes a pushing block 310 and a pushing rod 312. One end of the pushing block 310 is slidably connected to the slide groove 301, and the other end of the pushing block 310 is provided with a second notch 3100. One end of the pushing rod 312 is connected to the pushing block 310, and the other end of the pushing rod 312 extends out of the rod body 30.

[0037] By pushing the push rod 312 downward, the push block 310 slides downward along the slide groove 301. The pushing process is simple, so that the suture 1 will not be accumulated at the suture needle 2, and the T-shaped knot 10 of the suture 1 can be completely extended out of the opening at the needle tip of the suture needle 2 and smoothly enter the fiber ring, thereby improving the success rate of suturing.

[0038] Refer again Figure 4The pusher 31 may also be a screw nut assembly, one end of the threaded rod 313 of the screw nut assembly is rotatably connected to the side wall of the slide groove 301 close to the first notch 300, the other end of the threaded rod 313 extends out of the top of the rod body 30, the threaded sleeve 314 in the screw nut assembly is slidably connected to the slide groove 301, and the pusher block 310 is connected to the threaded sleeve 314. The screw nut assembly makes the movement of the pusher block 310 more stable, so that the suture 1 can enter the fiber ring more stably, suture the fiber ring rupture, and further improve the success rate of fiber ring suture.

[0039] The included angle between the push block 310 and the rod body 30 is 30°. Because the notch of the push block 310 is larger than the diameter of the suture 1, the suture 1 will not be pulled upward when it is taken out. If the included angle between the push block 310 and the threaded sleeve 314 is too large, the suture 1 can be pulled out. The push block 310 may weaken the effect of the suture 1, affecting the suture 1 from entering the fiber ring. The included angle between the push block 310 and the rod body 30 is 30°, which further improves the success rate of fiber ring suture.

[0040] Referring again to 3, the push rod 3 also includes a limit block 32, and the limit block 32 is 5cm-8cm away from the bottom of the rod body 30. The limit block 32 limits the distance between the push block 310 and the bottom of the rod body 30. If the push block 310 is too far away from the bottom of the rod body 30, it will be too far away from the bottom of the suture 1 when used. If the distance between the push block 310 and the bottom of the suture 1 is too far, the suture 1 may be bent, affecting the suturing of the fiber ring. The limit block 32 is 5cm-8cm away from the bottom of the rod body 30, which avoids this situation and further improves the success rate of the fiber ring suturing.

[0041] Refer again Figure 3 The first notch 300 and the second notch 3100 are both rounded. The rounded corners make it easier to move the push rod 3 out of the annulus fibrosus, reducing the possibility that the suture 1 is stuck at the first notch 300 and the second notch 3100, and the possibility that the push rod 3 affects the suture 1, further improving the success rate of the annulus fibrosus suturing.

[0042] The length of the push rod 312 is greater than the length of the rod body 30: 3cm-5cm. If the push rod 312 extends out of the rod body 30 too long, it will cause material waste. If the push rod 312 extends out of the rod body 30 too short, it will affect the movement of the push rod 312, thereby affecting the suture 1 from entering the annulus fibrosus. The length of the push rod 312 extending out of the rod body 30 is 3cm-5cm, which further improves the success rate of the annulus fibrosus suturing.

[0043] The horizontal bar on the T-shaped knot 10 of the suture 1 is provided with blunt wave serrations 100. The blunt wave serrations 100 increase the stability and fixation of the knot in the intervertebral disc, prevent the suture 1 from coming out of the intervertebral disc tissue during the suturing and knotting process, and further improve the success rate of the annulus fibrosus suture.

[0044] The inner diameter of the suture needle 2 is 0.5 mm, and the diameter of the rod body 30 is 0.3 mm-0.4 mm. The rod body 30 enables the suture 1 to smoothly enter the annulus fibrosus, reduces the possibility of the suture 1 accumulating inside the suture needle 2, and further improves the success rate of the annulus fibrosus suturing.

[0045] The length of the suture needle 2 is 30 cm, and the length of the rod 30 is 33 cm-35 cm. The rod 30 can reach the bottom of the suture needle 2, and the rod 30 extends out of the suture needle 2, which is convenient for taking out the rod 30 and further improving the success rate of the fiber ring suture.

[0046] The suturing needle 2 may be a hollow Kirschner wire, which is relatively hard, so that the suturing device can also be used for suturing close to the fibrous ring of the spinal bone.

[0047] The above disclosures are only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A fiber ring suturing device, comprising a suture (1) and a suture needle (2), characterized in that: Also includes: A push rod (3) used in conjunction with the suture (1) and the suture needle (2), the push rod (3) comprising: A rod body (30) is located inside the suture needle (2), a slide groove (301) is provided on one side of the rod body (30) along the length direction, and a first notch (300) is provided at the bottom of the rod body (30), wherein the first notch (300) is used to clamp the T-shaped knot (10) of the suture (1) and push it to the needle tip of the suture needle (2); The pushing member (31) is slidably connected to the slide groove (301). When the T-shaped thread knot (10) is pushed to the needle tip of the suture needle (2), the pushing member (31) slides along the slide groove (301) toward the needle tip of the suture needle (2). The pushing member (31) pushes the suture (1) above the T-shaped thread knot (10) to move toward the needle tip, so as to push the T-shaped thread knot (10) out of the opening at the needle tip of the suture needle (2).

2. The fiber ring suture device according to claim 1, characterized in that: The pushing member (31) comprises a pushing block (310) and a pushing rod (312); one end of the pushing block (310) is slidably connected to the sliding groove (301); the other end of the pushing block (310) is provided with a second notch (3100); one end of the pushing rod (312) is connected to the pushing block (310); the other end of the pushing rod (312) extends out of the rod body (30).

3. The fiber annulus suture device according to claim 2, characterized in that: The first notch (300) of the pushing block (310) is arranged in an inclined direction.

4. The fiber ring suture device according to claim 2, characterized in that: The included angle between the pushing block (310) and the rod body (30) is 30°.

5. The fiber ring suture device according to claim 1, characterized in that: The propulsion rod (3) further comprises a limit block (32), the limit block (32) being 5 cm to 8 cm away from the bottom of the rod body (30), and the limit block (32) being used to limit the initial position of the push block (310).

6. The fiber ring suture device according to claim 2, characterized in that: The first notch (300) and the second notch (3100) are both rounded corners.

7. The fiber ring suture device according to claim 2, characterized in that: The length of the push rod (312) is greater than the length of the rod body (30): 3 cm to 5 cm.

8. The fiber annulus suture device according to claim 1, characterized in that: Blunt wavy saw teeth (100) are arranged on the horizontal bar on the T-shaped knot (10) of the suture (1).

9. The fiber ring suture device according to claim 1, characterized in that: The inner diameter of the suture needle (2) is 0.5 mm, and the diameter of the rod body (30) is 0.3 mm-0.4 mm.

10. The fiber annulus suture device according to claim 1, characterized in that: The length of the suture needle (2) is 30 cm, and the length of the rod (30) is 33 cm-35 cm.

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