Ligament suture knotless non-absorbable barbed suture and vaginal procedure mechanical claw assembly

Abstract

The utility model provides a kind of ligament suture knotting-free non-absorbable barbed suture and mechanical claw assembly for vaginal operation, it is related to medical instrument field.The utility model provides the ligament suture knotting-free non-absorbable barbed suture, including suture, the head end of suture is equipped with suture needle, the outside of suture is equipped with anti-cut layer;Anti-cut layer is equipped with barbed array, and barbed array includes a plurality of barbed sequentially arranged along suture, and each barbed is tilted outward along the direction of suture head end to tail end;The tail end of suture is equipped with snap ring for clamping barbed.The present application avoids the operation of knotting in the suture process of vaginal operation, is applicable to the situation that knotting operation is difficult under single-hole laparoscope, can be realized in vaginal operation to avoid knotting mode and suture vagina on presacral longitudinal ligament.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a knot-free, non-absorbable barbed suture for ligament sutures and a mechanical claw assembly for vaginal surgery. Background Technology

[0002] When performing sacral fixation and presacral suture via single-port laparoscopy through the vaginal natural orifice, knot tying is indeed very difficult, especially when using a narrow extraperitoneal passage. To reduce the difficulty of the procedure and better promote this technique, developing a knot-free, non-absorbable surgical suture is particularly important. Single-port laparoscopic surgery (LESS) and transvaginal endoscopic surgery (NOTES) represent important directions in minimally invasive surgery, offering advantages such as minimal trauma, rapid recovery, and good cosmetic results. However, these surgical techniques also face many challenges, especially the difficulty of suturing. Because all instruments enter through a single incision, the operating space is limited, instruments are prone to interference, and the field of vision is restricted, making traditional knot tying extremely difficult.

[0003] In summary, there is a need for a knot-free, non-absorbable barbed suture for ligament suturing to allow for the vagina to be sutured to the sacroiliac ligament without knotting during vaginal surgery. Utility Model Content

[0004] To address the difficulty of tying knots in vaginal surgery, this invention provides a knot-free, non-absorbable barbed suture for ligament suturing and a mechanical gripper assembly for vaginal surgery, enabling the vagina to be sutured to the anterior longitudinal ligament of the sacrum without knotting during vaginal surgery.

[0005] The ligament suture provided by this utility model is a knot-free, non-absorbable barbed suture, comprising a suture thread with a suture needle at the head end and an anti-cutting layer covering the outside of the suture thread; the anti-cutting layer has a barb array, which includes multiple barbs arranged sequentially along the suture thread, each barb curving outward from the head end to the tail end of the suture thread; the tail end of the suture thread has a retaining ring for holding the barbs, the retaining ring including a retaining ring base and multiple elastic tips on the retaining ring base, the elastic tips being arranged sequentially along the circumference of the retaining ring, and the elastic tips gradually closing away from the retaining ring base without sealing the opening.

[0006] In one feasible embodiment, the upturn angle α between the barbs and the anti-cutting layer is 30~60°.

[0007] In one feasible implementation, it includes multiple sets of barb arrays, which are uniformly arranged circumferentially along the anti-cutting layer.

[0008] In one feasible embodiment, the number of barbs in the barb array is 40 to 60, and the spacing between the barbs in the barb array is 10 to 20 mm.

[0009] In one feasible embodiment, four sets of barb arrays are included, namely a first barb array, a second barb array, a third barb array, and a fourth barb array. The spacing between the barbs in the first, second, third, and fourth barb arrays is the same. The first barb in the first barb array is flush with the first barb in the third barb array, and the first barb in the second and fourth barb arrays is flush with the first barb. The first barb in the second barb array lags behind the first barb in the first barb array by 15-30 mm along the direction from the beginning to the end of the cut-resistant layer.

[0010] In one feasible embodiment, the suture needle is an arc-shaped suture needle with an arc angle of 30~60°.

[0011] In one possible implementation, the free end of the barb is rounded.

[0012] In one possible implementation, the barbs are annular barbs.

[0013] In one feasible embodiment, the retaining ring is adjusted such that the retaining ring includes a retaining ring base and a pawl disposed on the inner wall of the retaining ring base, the pawl being swayable radially along the retaining ring base, and the pawl having a barb groove that matches the barb.

[0014] This utility model also provides a mechanical claw assembly for vaginal surgery, including the aforementioned non-absorbable barbed suture for ligament suturing without knotting, and two independently controllable mechanical claws, one of which is used to hold the suture needle and the other is used to hold the retaining ring.

[0015] The non-absorbable barbed suture for ligament suturing and the mechanical gripper assembly for vaginal surgery provided by this utility model have the following beneficial effects:

[0016] This invention avoids the knotting operation during vaginal surgery and is suitable for situations where knotting is difficult under single-port laparoscopy. It enables the vagina to be sutured to the anterior longitudinal ligament of the sacrum in vaginal surgery without knotting, thus promoting the development and application of single-port laparoscopic technology. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the barbed suture provided in Embodiment 1 of this utility model.

[0018] Figure 2This is a schematic diagram of the retaining ring in the barbed suture provided in Embodiment 1 of this utility model.

[0019] Figure 3 This is a cross-sectional view of the barbed suture provided in Embodiment 1 of this utility model.

[0020] Figure 4 This is a diagram showing the state of the barbed suture after knotting, as provided in Embodiment 1 of this utility model.

[0021] Figure 5 This is a schematic diagram of the overall structure of the barbed suture provided in Embodiment 2 of this utility model.

[0022] Figure 6 This is a schematic diagram of the retaining ring in the barbed suture provided in Embodiment 2 of this utility model.

[0023] Figure 7 This is a cross-sectional view of the barbed suture provided in Embodiment 2 of this utility model.

[0024] Figure 8 This is a diagram showing the state of the barbed suture after knotting, as provided in Embodiment 2 of this utility model.

[0025] Figure Labels

[0026] 1 suture

[0027] 2 suture needles

[0028] Cut-resistant layer 3

[0029] 4 barbs

[0030] Fixed end 41

[0031] Free end 42

[0032] Ring 5

[0033] Snap ring base 51

[0034] Plain end 51.1

[0035] Elastic cusp 52

[0036] 52.1 retractable end

[0037] 53 thorn claws

[0038] Barbed groove 53.1 Detailed Implementation

[0039] 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 skilled in the art without creative effort are within the scope of protection of the present utility model. In the description of the present utility model, it should be noted that the terms "left side", "right side", "upper side", "lower side", "above", "below", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0042] This utility model embodiment provides a knotless, non-absorbable barbed suture for ligament suturing, combined with... Figure 1 and Figure 3 It includes a suture 1, with a suture needle 2 at its tip, and a cut-resistant layer 3 covering the outside of the suture 1. The cut-resistant layer 3 is typically composed of multiple strands of cut-resistant rope woven around the outside of the suture 1. Figure 1 and Figure 3 The anti-cutting layer 3 is provided with a barb array, which includes multiple barbs 4 arranged sequentially along the suture line 1. Each barb 4 curves outward from the head to the tail end of the suture line 1. "Curved outward" means curving away from the suture line 1. (See reference...) Figure 1For ease of description below, the two ends of the barb 4 are defined as a fixed end 41 and a free end 42, respectively. The fixed end 41 is the end connected to the anti-cut layer 3, and the free end 42 is the end that curves outward. Under normal circumstances, each barb 4 should maintain an appropriate spacing. Taking the extension direction of the suture 1 as an example, the fixed end 41 of the next barb 4 should not be ahead of the free end 42 of the previous barb 4 to ensure that each barb 4 can maintain its independence. See further... Figure 2 The suture 1 has a retaining ring 5 at its end for securing the barb 4. For illustration, the suture 1 is a non-absorbable single-strand suture, and the materials of the cut-resistant layer 3, barb 4, and retaining ring 5 are also non-absorbable, such as primine.

[0043] The ligament suture provided in this embodiment of the invention, which is knot-free and non-absorbable barbed, combines with... Figure 2 and Figure 3 The retaining ring 5 includes a retaining ring base 51 and a plurality of elastic pointed petals 52 disposed on the retaining ring base 51. The elastic pointed petals 52 are arranged sequentially along the circumference of the retaining ring 5. The elastic pointed petals 52 gradually converge away from the retaining ring base 51 but do not close completely. The retaining ring base 51 and the elastic pointed petals 52 are usually integrally formed. For ease of description below, the two ends of the retaining ring 5 are defined as a converged end 52.1 and a flat end 51.1, respectively. The converged end 52.1 is the end with the elastic pointed petals 52, and the flat end 51.1 is the end with the retaining ring base 51.1. The diameter of the converged end 52.1 is usually equal to or slightly smaller than the diameter of the anti-cutting layer 3 to ensure that the converged end 52.1 can clamp the anti-cutting layer 3, while the diameter of the flat end 51.1 is usually larger than the diameter of the anti-cutting layer 3 plus the straight-line distance between the barb 4 and the anti-cutting layer 3 to ensure that the anti-cutting layer 3 and the barb 4 can smoothly enter the retaining ring 5. When using this utility model to fix the suture 1, it can be combined with Figure 3 and Figure 4The retaining ring 5 is passed through the suture needle 2, and then through each barb 4 in sequence. During the process of the retaining ring 5 passing through the barbs 4, the flat end 51.1 of the retaining ring 5 passes through the barbs 4 first, and then the closing end 52.1 passes through the barbs 4. During the process of the closing end 52.1 passing through the barbs 4, the elastic tip 52 will touch the barbs 4. The barbs 4 will resist the elastic tip 52 and make it bend so that the closing end 52.1 can pass through the barbs 4. After the closing end 52.1 passes through the barbs 4, the elastic rebound force of the elastic tip 52 will make the elastic tip 52 return to its initial state, that is, keep the closing end 52.1 in the closed state, thus clamping the anti-cut layer 3. After the retaining ring 5 tightens the suture 1, the retaining ring 5 can be released directly to complete the fixation. When the closing end 52.1 of the retaining ring 5 wants to exit the suture 1 in the opposite direction, the barbs 4 will jam the closing end 52.1 to prevent it from passing through. This invention avoids the knotting operation during vaginal surgery and is suitable for situations where knotting is difficult under single-port laparoscopy. It enables the vagina to be sutured to the anterior longitudinal ligament of the sacrum in vaginal surgery without knotting, thus promoting the development and application of single-port laparoscopic technology.

[0044] The ligament suture provided in this embodiment of the invention, which is knot-free and non-absorbable barbed, combines with... Figure 5 and Figure 6 The retaining ring 5 includes a retaining ring base 51 and a pawl 53 disposed on the inner wall of the retaining ring base 51. The pawl 53 can swing radially along the retaining ring base 51, and the pawl 53 has a barb groove 53.1 that matches the barb 4. The principle by which the pawl 53 engages with the barb 4 is similar to that of a nylon cable tie. Simply put, it combines... Figure 7 and Figure 8 When the retaining ring 5 moves from the beginning to the end of the suture line 1, the barb 4 acts like an uphill slope. Although the barb groove 53.1 in the pawl 53 continuously engages the barb 4, subsequent movements of the barb 4 will push the pawl 53 upwards, disengaging the engaged barb 4. This mechanism allows the retaining ring 5 to move from the beginning to the end of the suture line 1. However, the reverse is not true. When the retaining ring 5 wants to withdraw from the end of the suture needle 2 towards the beginning, the barb 4 can no longer continuously push the pawl 53 upwards as it did when the retaining ring 5 entered. Therefore, the barb groove 53.1 in the pawl 53 can only engage the barb 4 and cannot move. On the other hand, when the retaining ring 5 moves towards the beginning of the suture line 1, it will also be blocked by the free end 42 of the barb 4. Therefore, the method of setting the pawl 53 on the inner wall of the retaining ring base 51 can also achieve knot-free suture line 1. In a specific embodiment, see [reference]. Figure 5 The barb 4 is an annular barb 4, which can wrap around the surface of the anti-cut layer 3. Generally, the annular barb 4 is a solid barb 4.

[0045] The ligament suture provided in this embodiment of the invention, which is knot-free and non-absorbable barbed, combines with... Figure 1 and Figure 4 The system includes multiple sets of barb arrays, which are uniformly arranged circumferentially along the anti-cutting layer 3. The number of barb arrays is 4 to 6, preferably 4. In one specific embodiment, it includes four sets of barb arrays: a first barb array, a second barb array, a third barb array, and a fourth barb array. The spacing between the barbs 4 in the first, second, third, and fourth barb arrays is the same. The first barb 4 in the first barb array is flush with the first barb 4 in the third barb array, and the first barb 4 in the second and fourth barb arrays is flush with the first barb 4 in the fourth barb array. The first barb 4 in the second barb array lags behind the first barb 4 in the first barb array by 15 to 30 mm, preferably 15 mm, along the direction from the head to the tail of the anti-cutting layer 3.

[0046] In the ligament suture knot-free non-absorbable barbed suture provided in this embodiment of the utility model, the upturned angle α between the barb 4 and the anti-cutting layer 3 is 30~60°, preferably 30°.

[0047] In the ligament suture knot-free non-absorbable barbed suture provided in this embodiment of the utility model, the number of barbs 4 in the barb array is 40 to 60, preferably 40, and the spacing between the barbs 4 in the barb array is 10 to 20 mm, preferably 15 mm.

[0048] In the ligament suture knot-free non-absorbable barbed suture provided in this embodiment of the utility model, the suture needle 2 is an arc-shaped suture needle 2, and the arc of the suture needle 2 is 30~60°, preferably 30°.

[0049] In the ligament suture knot-free non-absorbable barbed suture provided in this embodiment of the utility model, the free end 42 of the barb 4 is rounded with a radius of 1~3mm, preferably 1mm.

[0050] Example 2

[0051] A mechanical gripper assembly for vaginal surgery includes a non-absorbable barbed suture for ligament suturing as described in Embodiment 1, and two independently controllable mechanical grippers, one gripper for holding a suture needle 2 and the other gripper for holding a retaining ring 5. In vaginal surgery, the surgeon can use the mechanical grippers to suture the vagina to the anterior longitudinal ligament of the sacrum via the non-absorbable barbed suture for ligament suturing.

[0052] 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 substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A knot-free, non-absorbable barbed suture for ligament sutures, characterized in that: It includes a suture (1), the head end of which is provided with a suture needle (2), and the outside of the suture (1) is covered with a cut-resistant layer (3). The anti-cutting layer (3) is provided with a barb array, which includes multiple barbs (4) arranged sequentially along the suture line (1), and each barb (4) is raised outward from the head end to the tail end of the suture line (1); The suture (1) has a retaining ring (5) at the end for locking the barb (4).

2. The non-absorbable barbed suture for ligament sutures according to claim 1, characterized in that: The retaining ring (5) includes a retaining ring base (51) and a plurality of elastic tips (52) disposed on the retaining ring base (51). The elastic tips (52) are arranged sequentially along the circumference of the retaining ring (5). The elastic tips (52) gradually converge but do not close in the direction away from the retaining ring base (51).

3. The non-absorbable barbed suture for ligament sutures according to claim 1, characterized in that: The retaining ring (5) includes a retaining ring base (51) and a pawl (53) provided on the inner wall of the retaining ring base (51). The pawl (53) can swing radially along the retaining ring base (51). The pawl (53) is provided with a barb groove (53.1) that matches the barb (4).

4. The non-absorbable barbed suture for ligament sutures according to claim 2, characterized in that: It includes multiple sets of barb arrays, which are uniformly arranged along the circumference of the anti-cutting layer (3).

5. The non-absorbable barbed suture for ligament sutures according to claim 4, characterized in that: It includes four sets of barb arrays, namely the first barb array, the second barb array, the third barb array and the fourth barb array. The spacing between the barbs (4) in the first barb array, the second barb array, the third barb array and the fourth barb array is the same. The first barb (4) in the first barb array is flush with the first barb (4) in the third barb array. The first barb (4) in the second barb array is flush with the first barb (4) in the fourth barb array. The first barb (4) in the second barb array lags behind the first barb (4) in the first barb array by 15~30mm along the direction from the head end to the tail end of the anti-cut layer (3).

6. The non-absorbable barbed suture for ligament sutures according to claim 3, characterized in that: The barb (4) is an annular barb (4), and the inner wall of the retaining ring base (51) is provided with a plurality of pawls (53) arranged circumferentially along the inner wall of the retaining ring base (51).

7. The non-absorbable barbed suture for ligament sutures according to claim 2 or 3, characterized in that: The number of barbs (4) in the barb array is 40 to 60, the spacing between the barbs (4) in the barb array is 10 to 20 mm; and / or, the angle α between the barb (4) and the anti-cutting layer (3) is 30 to 60°.

8. The non-absorbable barbed suture for ligament sutures according to claim 1, characterized in that: The suture (1), the anti-cut layer (3), the barbs (4), and the retaining ring (5) are all made of non-absorbable material.

9. The non-knotted, non-absorbable barbed suture for ligament suture according to claim 1, characterized in that: The suture needle (2) is an arc-shaped suture needle (2) with an arc of 30~60°; and / or, the free end (42) of the barb (4) is rounded.

10. A mechanical gripper assembly for vaginal surgery, comprising the non-absorbable barbed suture for ligament suturing as described in any one of claims 1 to 9, characterized in that: It also includes two independently controllable mechanical grippers, one of which is used to hold the suture needle (2) and the other is used to hold the clasp (5).

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