Medical suture locking device

Abstract

This utility model discloses a medical suture locking device and its usage method, aiming to solve problems such as complex suturing operations, uneven tension, and difficulty in synchronous adjustment of multiple sutures in existing technologies. The device consists of a clamping shell, clamping latches, a locking mechanism, a spring-loaded mechanism, and medical sutures. Through a socket-type connection and a sliding rail groove structure, it achieves precise suture fixation and tension control. The spring-loaded mechanism design ensures that the clamping latches automatically spring back to the closed state, facilitating rapid suture adjustment; the locking mechanism, in conjunction with the limiting groove structure, effectively prevents latch displacement and suture loosening. The device is compatible with various suture specifications, and the optimized tooth shape enhances the fixing force. Compared with traditional technologies, this utility model is simple to operate, has stable performance, significantly improves surgical efficiency and safety, and is particularly suitable for high-precision surgeries such as valve repair, providing an ideal solution for surgical procedures.

Description

Technical Field

[0001] This application relates to the field of medical devices, and in particular to a medical suture locking device. Background Technology

[0002] Sutures play a crucial role in surgery, being widely used in a variety of procedures, from soft tissue repair and organ suturing to prosthesis implantation. In all surgical fields, suture tension control is a key step in ensuring surgical success. Proper tension effectively keeps incisions closed, prevents bleeding, and promotes tissue healing. However, suture tension control has always been a technical challenge in surgery, particularly in cardiac surgery.

[0003] Sutures are used frequently in cardiac surgery, especially during complex procedures such as vascular closure, heart valve repair, or prosthesis implantation. Due to the unique properties of cardiac tissue and the complexity of the surgical site, suture tension control requires extreme precision. It is necessary to avoid over-tensioning that could cause tissue damage, while also preventing insufficient tension that would result in unstable suture fixation. Furthermore, cardiac surgery often requires the manipulation of multiple sutures, requiring surgeons to coordinate the tension at multiple suture points simultaneously. This makes traditional manual manipulation methods more difficult and carries a higher risk.

[0004] However, the difficulty of suture tensioning is not limited to cardiac surgery. In general surgery, suture tension is also a challenging task. For example, in wound repair, abdominal surgery, plastic surgery, and intestinal anastomosis, maintaining appropriate suture tension is crucial. Overly loose sutures can lead to wound dehiscence, infection, or poor healing, while overly tight sutures can cause tissue necrosis, ischemia, and even serious complications. Therefore, accurately and consistently controlling suture tension is a pressing technical challenge in all surgical procedures.

[0005] Currently, most surgical procedures rely on manual manipulation by surgeons or the use of hemostatic forceps for tensioning. While this traditional method is widely used, its limitations are significant. First, manual tensioning demands a high level of surgical skill and is easily affected by factors such as the operating environment and surgeon fatigue, leading to uneven tension. Second, coordinating the tension of multiple sutures becomes extremely challenging when manipulating them simultaneously. Simultaneous tensioning of multiple sutures not only increases the complexity of the surgery but also raises the risk of errors. Furthermore, existing methods often fail to achieve uniform tension distribution, which may affect the stability and safety of the procedure and increase the risk of postoperative complications.

[0006] Therefore, improving suture tension control through technological means, especially achieving automated and precise tension control, has become a pressing technical challenge in the field of surgery. Solving this problem is of particular importance for cardiac surgery, as it not only relates to the precision of surgical procedures but also has a profound impact on patients' postoperative recovery and long-term prognosis. Utility Model Content

[0007] This application discloses a medical suture locking device designed to address several problems existing in the prior art, including the strict requirements of suturing techniques, inconsistent tension, and difficulties in simultaneous operation of multiple sutures. With the continuous advancement of surgical techniques, higher demands are placed on suture fixation and management. However, existing suture fixation methods still have many shortcomings, affecting the stability and effectiveness of the surgical procedure. Therefore, designing a more efficient and reliable fixation device and method is not only significant for improving the precision and efficiency of surgical operations but also crucial for ensuring surgical safety and improving clinical treatment outcomes.

[0008] This application addresses the problems in the prior art and provides a medical suture locking device, including a clamping shell, a clamping buckle, a locking mechanism, a spring-back mechanism, and a medical suture.

[0009] The clamping housing is connected to the clamping latch in a socket-type manner. The clamping latch is inserted into the clamping housing and can move linearly. It cooperates with the clamping housing to achieve the clamping of medical sutures.

[0010] The locking mechanism and the clamping housing are connected by a slide rail slot structure. The locking mechanism is engaged in the track slot of the clamping housing, and the locking mechanism is symmetrically hinged to both sides of the clamping housing.

[0011] The locking mechanism is hinged to one side of the clamping housing;

[0012] The spring-back mechanism is installed between the clamping housing and the clamping latch to ensure that the clamping latch can automatically spring back to the closed and locked state after the tension force is applied.

[0013] The medical suture is sleeved between the clamping shell and the clamping buckle, and a clamping connection is used to fix the medical suture.

[0014] In some embodiments, the clamping housing includes a receiving slot, a first clamping hole, a guide groove, a slide rail groove, an end slot, and anti-dislodgement teeth;

[0015] The socket is located at the middle of the front surface of the clamping housing in the width direction, and the socket is a blind hole structure;

[0016] The first clamping hole is a through hole, located in the middle of the upper and lower surfaces of the clamping shell in the thickness direction;

[0017] The guide groove is located on both sides of the slot opening, and has an arc-shaped groove structure with limiting ends at both ends;

[0018] The slide rail groove is located at the end of the upper and lower surfaces of the clamping housing in the thickness direction near the front surface in the width direction, and is a blind groove with both ends limited;

[0019] The end slot is located at the end of the left and right surfaces of the clamping housing in the length direction, close to the front surface in the width direction, and is a blind hole structure;

[0020] The first anti-detachment tooth is located on the entire front surface of the clamping housing in the width direction, and has a symmetrical structure, or

[0021] It has a unidirectional tooth structure.

[0022] In some embodiments, the clamping latch includes a pressing end, a receiving end, a second clamping hole, a guide post, a limiting post, and a connecting rib;

[0023] The pressing end is located at one end of the clamping latch;

[0024] The socket end is an extension of the pressing end, and the cross-sectional dimensions of the socket end are smaller than those of the pressing end;

[0025] The second clamping hole is located at the middle position of the upper and lower surfaces in the thickness direction of the socket end;

[0026] The guide posts are located on the left and right sides of the socket end in the width direction and are symmetrically distributed.

[0027] The limiting post is an extension of the guide post, and the cross-sectional dimension of the guide post is smaller than that of the limiting post;

[0028] The connecting rib is the connection point between the socket end and the limiting post.

[0029] In some embodiments, the locking mechanism includes a locking end, a limiting groove, a slide rail locking head, an end locking head, and a second anti-disengagement tooth;

[0030] The snap-fit ​​end is located on the upper and lower surfaces in the thickness direction of the locking mechanism;

[0031] The limiting groove is located at the middle position in the thickness direction of the locking mechanism, and its length direction is open on the side near the socket end.

[0032] The slide rail latch is located at the end of the upper and lower surfaces of the locking mechanism in the thickness direction, near the front surface in the width direction, and has a left-right symmetrical structure;

[0033] The end cap is located at the end of the left surface of the locking mechanism in the length direction, near the front surface in the width direction;

[0034] The second anti-detachment tooth is located on the front surface of the locking mechanism in the width direction, excluding the slide rail head and the end head, and has a left-right symmetrical structure.

[0035] In some embodiments, the rebound mechanism is a spring, a leaf spring, or a rubber band;

[0036] The springback mechanism is sleeved on the limiting post and placed in the guide groove.

[0037] In some embodiments, the tooth structure of the first anti-detachment tooth and the second anti-detachment tooth is a set of serrated teeth.

[0038] The tooth profiles of the first anti-detachment tooth and the second anti-detachment tooth correspond to the first tooth profile and the second tooth profile.

[0039] In some embodiments, the first clamping hole and the second clamping hole are circular, rectangular, wavy, or triangular in shape to accommodate the needs of different sutures.

[0040] In some embodiments, the inner holes of both the first clamping hole and the second clamping hole are provided with teeth of different shapes, and the tooth design includes trapezoidal, rectangular, arc-shaped, and triangular shapes; or

[0041] The inner hole has a granular protrusion structure, which is evenly distributed on the inner hole of the first clamping hole and the second clamping hole. The protrusion has a conical structure, including a cone shape, a tetrahedral cone shape and a polyhedral cone shape.

[0042] In some embodiments, the total number of clamping holes is any one of 3, 5, 7 or 9, the first clamping hole and the second clamping hole are alternately distributed, and the number of layers of the first clamping hole of the clamping housing and the second clamping hole of the clamping buckle is one more layer to improve the clamping force.

[0043] In some embodiments, the number of single layers of the first clamping hole and the second clamping hole is 1 to 10;

[0044] The first clamping hole and the second clamping hole are arranged in a circumferential array; or

[0045] The first clamping hole and the second clamping hole are arranged in 1 to 4 rows in a symmetrical manner.

[0046] In some embodiments, the pressing end is a sloping structure, and the slope angle A1 between the sloping side and the first straight side in the width direction is 5~30°.

[0047] In some embodiments, the snap-fit ​​end is a sloping structure, and the slope angle A2 between the sloping side and the first straight side in the width direction is 5.5~30°;

[0048] The angle of A2 is 0.5 to 5 degrees larger than the angle of A1.

[0049] In some embodiments, all locations are rounded to prevent secondary damage to internal tissues during the procedure.

[0050] In some embodiments, the angle between the first tooth profile and the first side of the second tooth profile and the horizontal line is 85° to 125°.

[0051] The first tooth profile and the first side of the second tooth profile are straight sides or / and

[0052] The first tooth profile and the first side of the second tooth profile are wavy edges;

[0053] The radii of the wavy arcs on the first and second tooth profiles are the same or / and

[0054] The radii of the wavy arcs on the first side of the first tooth profile and the second tooth profile are not the same.

[0055] The tips of the first tooth and the second tooth have no rounded corners or / and

[0056] The first tooth and the second tooth have a rounded corner radius R1 of 0.1~1mm at their tips;

[0057] The radius R2 of each segment of the wavy arc of the first tooth and the second tooth is between 0.1 and 1 mm.

[0058] The device performs the suture fixation operation, and the specific steps include:

[0059] Pressing the clamping latch aligns the first clamping hole and the second clamping hole, switching the suture fixing device to the open state for replacing or adjusting the medical suture.

[0060] The medical suture is passed through the corresponding first clamping hole and second clamping hole, and placed inside the clamping assembly;

[0061] When the clamping latch is released, the spring force provided by the spring mechanism causes the clamping latch to return to its original position. By moving the relative position of the clamping latch and the clamping housing, the medical suture is locked and fixed, and the suture fixing device switches to the closed and locked state.

[0062] Adjust the relative position and tension of the multiple medical sutures to ensure that the position of the medical sutures is reasonable;

[0063] Once the position of the medical suture is fixed, the locking mechanism is pushed from the outside in, causing the limiting groove to engage with the socket end, thereby restricting the movement of the clamping lock and thus firmly fixing the relative position of the suture.

[0064] Compared with existing technologies, the utility model medical suture locking device has at least the following advantages:

[0065] This invention significantly improves upon the shortcomings of existing technologies through an innovatively designed medical suture locking device. The device incorporates a suture tension control mechanism, greatly enhancing suturing accuracy, simplifying operation, and reducing surgical risks for patients. Before locking, it supports cyclical closing and opening states, allowing for multiple adjustments of suture tension, ensuring stable performance and convenient operation. Simultaneously, it shortens surgical time, improving efficiency and clinical outcomes.

[0066] Operators can tighten or loosen sutures simply by pressing the clamping buckle, greatly simplifying the operation process, reducing complexity, and improving surgical efficiency and stability.

[0067] Furthermore, through the coordinated design of the locking mechanism and the limiting groove, the device prevents the latch from shifting after fixation, further enhancing fixation safety and avoiding suture loosening caused by improper operation or external interference. This design significantly improves surgical efficiency and reduces operational difficulty and risk. This invention has significant application value in surgery, especially in valve repair surgery, providing an ideal solution for efficient and safe surgical procedures. Attached Figure Description

[0068] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0069] Figure 1 This is a three-dimensional structural diagram of a medical suture locking device according to an embodiment of this application, wherein the medical suture locking device is in a normal closed locking state.

[0070] Figure 2 This is a three-dimensional structural diagram of the medical suture locking device according to an embodiment of this application, wherein the medical suture locking device is in a normal closed locking state and the clamping latch is in an active state.

[0071] Figure 3This is a schematic diagram of the middle cross-section of the medical suture locking device according to an embodiment of this application, wherein the medical suture locking device is in a normal closed locking state and the clamping buckle is in an active state.

[0072] Figure 4 for Figure 3 A cross-sectional view of the medical suture locking device in the direction of the eye's BB (bulbar suture).

[0073] Figure 5 This is a three-dimensional structural diagram of the clamping housing of the medical suture locking device according to an embodiment of this application.

[0074] Figure 6 This is a three-dimensional structural diagram of the clamping lock of the medical suture locking device according to an embodiment of this application.

[0075] Figure 7 This is a three-dimensional structural diagram of the locking mechanism of the medical suture locking device according to an embodiment of this application.

[0076] Figure 8 This is a cross-sectional schematic diagram of the clamping housing of the medical suture locking device according to an embodiment of this application.

[0077] Figures 9a to 9d These are different hole shapes of the first and second clamping holes in the medical suture locking device according to an embodiment of this application.

[0078] Figures 10a to 10c This is a schematic diagram of the structure of different granular protrusions in the first and second clamping holes of the medical suture locking device according to an embodiment of this application.

[0079] Figures 11a to 11d This is a schematic cross-sectional view of different tooth shapes in the first and second clamping holes of the medical suture locking device according to an embodiment of this application.

[0080] Figures 12a to 12f This is a schematic diagram of the single-layer hole distribution of the first and second clamping holes of the medical suture locking device according to an embodiment of this application.

[0081] Figures 13a to 13d This is a schematic diagram of the layered arrangement of different numbers of the first and second clamping holes in the medical suture locking device according to an embodiment of this application.

[0082] Figures 14a to 14d This is a schematic diagram showing different forms of the first and second tooth shapes of the medical suture locking device according to an embodiment of this application.

[0083] Figure 15 This is a schematic diagram showing the suture being locked in its normal closed and locked state, according to an embodiment of this application.

[0084] Figure 16 This is a schematic diagram of the medical suture locking device used in the mitral valve chordae repair surgery procedure according to an embodiment of this application. Detailed Implementation

[0085] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0086] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0087] In the description of this application, it should be understood that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application.

[0088] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0089] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0090] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0091] like Figures 1 to 5 As shown, this utility model provides a medical suture locking device, including a clamping shell 1, a clamping lock 2, a locking mechanism 3, a spring-back mechanism 4, and a medical suture 5;

[0092] The clamping housing 1 and the clamping latch 2 are connected by a socket. The clamping latch 2 is inserted into the clamping housing 1 and can move linearly. It cooperates with the clamping housing 1 to clamp the medical suture 5.

[0093] The locking mechanism 3 and the clamping housing 1 are connected by a slide rail slot structure. The locking mechanism 3 is engaged in the track slot of the clamping housing 1. The locking mechanism 3 is symmetrically hinged on both sides of the clamping housing 1, or

[0094] Locking mechanism 3 is hinged to one side of clamping housing 1;

[0095] The spring-back mechanism 4 is installed between the clamping housing 1 and the clamping latch 2 to ensure that the clamping latch 2 can automatically spring back to the closed and locked state after the tension is applied;

[0096] The medical suture 5 is fitted between the clamping shell 1 and the clamping lock 2, and is fixed by a clamping connection.

[0097] like Figure 1 As shown, the medical suture locking device is in a normal closed and locked state, including a clamping shell 1 for fixing the various components, a clamping latch 2 for providing clamping force to the surgical suture 5, a locking mechanism 3 for locking the relative position of the clamping latch 2 and the clamping shell 1, and a springback mechanism 4 for ensuring that the clamping part springs back and clamps tightly. The surgical suture 5 is sleeved in the clamping assembly, and the surgical suture 5 is locked and fixed by moving the relative position of the clamping latch 2 and the clamping shell 1.

[0098] In some embodiments of the locking device for surgical sutures, the overall length of the device for fixing the suture in the closed and locked state is 8 to 30 mm.

[0099] In some embodiments, the locking device for surgical sutures has an overall width of 6 to 30 mm in the closed and locked state.

[0100] In some embodiments of the locking device for surgical sutures, the overall thickness of the device in the closed and locked state is 4 to 10 mm.

[0101] Please see Figures 1 to 4 Under normal conditions, the spring mechanism 4 keeps the device for fixing the suture thread in a closed and locked state by the force acting on the clamping buckle 2.

[0102] Once the position of the surgical suture 5 is fixed, the locking mechanism 3 is pushed inward in the width direction to restrict the movement of the clamping latch 2 (by...). Figure 2 or Figure 3 State transition to Figure 1 (in the state of the surgical suture 5), thereby firmly fixing the relative position of the surgical suture 5.

[0103] Figure 5 and Figure 8 As further shown, the clamping housing 1 includes a receiving slot 11, a first clamping hole 12, a guide groove 13, a slide rail groove 14, an end slot 15, and a first anti-disengagement tooth 16;

[0104] The socket 11 is located at the middle position of the front surface of the clamping housing 1 in the width direction, and the socket 11 is a blind hole structure;

[0105] The first clamping hole 12 is a through hole, located in the middle of the upper and lower surfaces of the clamping housing 1 in the thickness direction;

[0106] The guide groove 13 is located on both sides of the socket 11, and has an arc-shaped groove structure with limiting ends at both ends;

[0107] The slide rail groove 14 is located at the end of the upper and lower surfaces of the clamping housing 1 in the thickness direction, close to the front surface in the width direction, and is a blind groove with both ends limited;

[0108] The end slot 15 is located at the end of the left and right surfaces of the clamping housing 1 in the length direction, close to the front surface in the width direction, and is a blind hole structure;

[0109] The first anti-detachment tooth 16 is located on the entire front surface of the clamping housing 1 in the width direction, and has a symmetrical structure, or

[0110] It has a unidirectional tooth structure.

[0111] The clamping shell 1 is the basic structure of this utility model. Its design aims to provide the necessary stability and support. The shape of the clamping shell is optimized so that it can be comfortably gripped during operation, while ensuring that the clamping shell is not easily deformed when tension is applied, thus maintaining good structural strength.

[0112] Figure 6As further shown, the clamping latch 2 includes a pressing end 21, a receiving end 22, a second clamping hole 23, a guide post 24, a limiting post 25, and a connecting rib 26;

[0113] The pressing end 21 is located at one end of the clamping latch 2;

[0114] The socket end 22 is an extension of the pressing end 21, and the cross-sectional dimensions of the socket end 22 are smaller than those of the pressing end 21;

[0115] The second clamping hole 23 is located at the middle position of the upper and lower surfaces in the thickness direction of the socket end 22;

[0116] The guide posts 24 are located on the left and right sides of the socket end 22 in the width direction, and are symmetrically distributed.

[0117] The limiting post 25 is an extension of the guide post 24, and the cross-sectional dimensions of the guide post 24 are smaller than those of the limiting post 2.

[0118] The connecting rib 26 is the connection point between the socket end 22 and the limiting post 25.

[0119] The socket end 22 of the clamping latch 2 can be directly inserted into the clamping housing 1 and move linearly through the guide groove 13 and guide post 24. This linear motion design not only reduces movement resistance but also achieves higher clamping accuracy.

[0120] The diameters of the first clamping hole 12 and the second clamping hole 23 are 0.2~5mm to accommodate surgical sutures 5 of different diameters;

[0121] After pressing the pressing end 21 of the clamping lock 2, the device for fixing the suture line is in the normal open state.

[0122] Figure 7 As further shown, the locking mechanism 3 includes a locking end 31, a limiting groove 32, a slide rail locking head 33, an end locking head 34, and a second anti-disengagement tooth 35;

[0123] The snap-fit ​​end 31 is located on the upper and lower surfaces of the locking mechanism 3 in the thickness direction;

[0124] The limiting groove 32 is located in the middle of the thickness direction of the locking mechanism 3, and its length direction is open on the side near the socket end 22.

[0125] The slide rail head 33 is located at the end of the upper and lower surfaces of the locking mechanism 3 in the thickness direction, close to the front surface in the width direction, and has a left-right symmetrical structure.

[0126] The end cap 34 is located at the end of the left surface of the locking mechanism 3 in the length direction, near the front surface in the width direction;

[0127] The second anti-detachment tooth 35 is located on the front surface of the locking mechanism 3 in the width direction, at the position of the slide rail clip 33 and the end clip 34, and has a left-right symmetrical structure.

[0128] The pressing end 21 has a sloping structure, and the slope angle A1 between the sloping side and the first straight side in the width direction is 5~30°;

[0129] The connector 31 is a sloping structure, and the slope angle A2 between the sloping side and the first straight side in the width direction is 5.5~30°.

[0130] The angle of A2 is 0.5 to 5 degrees larger than the angle of A1.

[0131] The rebound mechanism 4 can be a spring, leaf spring, or rubber band;

[0132] The spring mechanism 4 enables the automatic springback and closed locking state of the clamping lock 2. After the clamping lock 2 has been tensioned, the spring mechanism 4 can quickly restore its original shape, ensuring that the clamping lock 2 automatically springs back, avoiding operational fatigue caused by prolonged pressure. The symmetrical distribution design of the spring mechanism 4 effectively improves the clamping effect of the clamping part, ensuring stable performance during multiple operations.

[0133] The spring-back mechanism 4 is mounted on the limit post 25 and placed in the guide groove 13.

[0134] Figures 9a to 9d Further illustrations show different hole shapes for the first clamping hole 12 and the second clamping hole 23. The shapes of the first clamping hole 12 and the second clamping hole 23 are diverse, including various forms such as circles, rectangles, arc waves, or triangles.

[0135] The diverse hole designs provide higher clamping precision, improve clamping stability and effectiveness, thereby reducing the risk of suture slippage or loosening and ensuring that the suture position remains fixed throughout the surgical procedure.

[0136] Figures 11a to 11d The different toothed cross-sectional structures of the first clamping hole 12 and the second clamping hole 23 are further shown. The inner holes of both the first clamping hole 12 and the second clamping hole 23 are provided with grooves or protrusions of different shapes of teeth, and the tooth designs include trapezoidal, rectangular, arc-shaped, and triangular shapes; or

[0137] Figures 10a to 10c The structure of different granular protrusions in the first clamping hole 12 and the second clamping hole 23 is further shown. The inner hole of the first clamping hole 12 and the second clamping hole 23 is a granular protrusion structure, which is evenly distributed on the inner hole of the first clamping hole 12 and the second clamping hole 23. The protrusions are conical structures, including conical, tetrahedral, and polyhedral.

[0138] The tapered protrusions provide more uniform friction, preventing the suture 5 from slipping and coming loose during clamping. The protrusion design helps to reduce wear on the suture surface while ensuring clamping force, making it particularly suitable for stable clamping during long-term operation.

[0139] Figures 12a to 12f The single-layer hole distribution structure of the first clamping hole 12 and the second clamping hole 23 is further shown, and the number of the first clamping hole 12 and the second clamping hole 23 in a single layer is 1 to 10.

[0140] The first clamping hole 12 and the second clamping hole 23 are arranged in a circular array; or

[0141] The first clamping hole 12 and the second clamping hole 23 are arranged in 1 to 4 rows in a symmetrical manner. This layout can effectively balance the pressure distribution and further improve the clamping effect.

[0142] Figures 13a to 13d The diagram further illustrates a layered arrangement structure with different numbers of first clamping holes 12 and second clamping holes 23. The total number of clamping holes is any one of 3, 5, 7 or 9. The first clamping holes 12 and second clamping holes 23 are alternately distributed, and the number of first clamping holes 12 is one more than the number of second clamping holes 23. This design allows for the selection of an appropriate number of clamping holes in different surgical scenarios. This design makes the clamping force more uniform and has higher adaptability. In different surgical scenarios, an appropriate number of clamping holes can be selected according to actual needs to ensure the stability and accuracy of clamping.

[0143] Through these multi-layered and multi-shaped clamping hole designs, this utility model can adapt to different types and specifications of surgical sutures and provide precise clamping force according to surgical needs, thereby improving the reliability of suture fixation, reducing suture loosening or displacement during surgery, and ensuring the safety and precision of the surgery.

[0144] To ensure the safety of the surgery, all corners are rounded. This design effectively avoids secondary damage to internal tissues during the procedure. The edges of the clamping locks are specially treated to reduce friction and damage to surrounding tissues, further improving the safety of the surgery.

[0145] Figures 14a to 14d As further shown, the angle between the first side of the first tooth profile 161 and the second tooth profile 351 and the horizontal line is 85° to 125°.

[0146] The first tooth profile 161 and the second tooth profile 351 have a straight edge on the first side or / and

[0147] The first tooth profile 161 and the second tooth profile 351 have a wavy first side;

[0148] The radii of the wavy arcs on the first side of the first tooth profile 161 and the second tooth profile 351 are the same or / and

[0149] The radii of the wavy arcs on the first side of the first tooth profile 161 and the second tooth profile 351 are not the same.

[0150] The tips of the first tooth profile 161 and the second tooth profile 351 have no rounded corners or / and

[0151] The first tooth profile 161 and the second tooth profile 351 have a rounded corner radius R1 of 0.1~1mm at their tips;

[0152] The radius R2 of the wavy arc of each segment of the first tooth profile 161 and the second tooth profile 351 is between 0.1 and 1 mm.

[0153] The locking device for surgical sutures has two main operating states: a normal closed locking state and an open state.

[0154] Please see Figure 15 In the normal closed-locked state, the clamping latch 2 is in the locked position, effectively securing the surgical suture 5. In this state, the user does not need to apply additional force, and the device can automatically maintain the clamping state, ensuring that the surgical suture 5 does not loosen or slip during the entire surgical procedure. The design of the normal closed-locked state takes into account the frequency of operation and pressure changes in surgery, ensuring stability even under extreme conditions.

[0155] In the open state, when it is necessary to replace or adjust the surgical suture 5, the user can switch the clamping latch 2 to the open state. In this state, the clamping latch 2 can be easily removed from the clamping shell to replace the surgical suture 5. The open state design simplifies the suture replacement process, reduces the workload of doctors, and improves the efficiency of surgery.

[0156] The specific steps for using the medical suture locking device include:

[0157] Pressing the clamping lock 2 aligns the first clamping hole 12 and the second clamping hole 23, switching the suture fixing device to the open state for replacement or adjustment of the medical suture 5.

[0158] The medical suture 5 is passed through the corresponding first clamping hole 12 and second clamping hole 23 and placed inside the clamping assembly;

[0159] Release the clamping lock 2, and the spring force provided by the spring mechanism 4 causes the clamping lock 2 to return to its original position. By moving the relative position of the clamping lock 2 and the clamping housing 1, the medical suture 5 is locked and fixed, and the device for fixing the suture is switched to the closed and locked state.

[0160] Adjust the relative position and tension of the multiple medical sutures 5 to ensure that the position of the medical sutures 5 is reasonable;

[0161] Once the position of the medical suture 5 is fixed, the locking mechanism 3 is pushed from the outside to the inside, causing the limiting groove 32 to engage with the socket end 22, thereby restricting the movement of the clamping lock 2 and thus firmly fixing the relative position of the suture.

[0162] Methods for securing medical sutures in some embodiments include transapical mitral chordae repair surgery in cardiac surgery, such as... Figure 16 As shown.

[0163] The overall length of the selected suture fixing device in the closed and locked state is 8~20mm;

[0164] The overall width of the selected suture fixing device in the closed and locked state is 6~18mm;

[0165] The overall thickness of the selected suture fixing device in the closed and locked state is 4~8mm;

[0166] Preferably, the overall length, width, and thickness of the selected suture fixing device in the closed and locked state are shown in Table 1.

[0167] Table 1. Dimensions of devices used for fixing sutures in transapical mitral valve chordae repair surgery.

[0168]

[0169] The number of the first clamping holes is 1 to 10.

[0170] Preferably, the number of first clamping holes is 1.

[0171] The first clamping hole is arranged in a single-row array on the clamping shell.

[0172] The diameters of the first and second clamping holes are 0.2~5mm to accommodate sutures of different diameters.

[0173] The preferred diameters of the first and second clamping holes are 1 mm;

[0174] Furthermore, preferably, the diameter of the first clamping hole and the second clamping hole is 2mm;

[0175] Furthermore, preferably, the diameter of the first clamping hole and the second clamping hole is 3mm.

[0176] The shapes of the first and second clamping holes are diverse, including circular, rectangular, arc-shaped, wavy, or triangular forms, among others.

[0177] Preferably, the first clamping hole and the second clamping hole are circular in shape;

[0178] Furthermore, preferably, the first clamping hole and the second clamping hole are shaped like a circular arc wave.

[0179] The inner holes of both the first and second clamping holes are provided with grooves or protrusions of different shapes of teeth, and the tooth designs include trapezoidal, rectangular, arc-shaped, and triangular.

[0180] Preferably, the inner hole teeth of the first clamping hole and the second clamping hole are trapezoidal;

[0181] Furthermore, preferably, the inner tooth shape of the first clamping hole and the second clamping hole is triangular.

[0182] The total number of clamping holes can be any one of 3, 5, 7, or 9.

[0183] Preferably, the number of layers of the first clamping hole is 2, and the number of layers of the second clamping hole is 1;

[0184] Furthermore, preferably, the number of layers in the first clamping hole is 3, and the number of layers in the second clamping hole is 2;

[0185] Furthermore, preferably, the number of layers of the first clamping hole is 4, and the number of layers of the second clamping hole is 3;

[0186] Furthermore, preferably, the number of layers of the first clamping hole is 5, and the number of layers of the second clamping hole is 4.

[0187] The pressing end has a sloping structure, and the slope angle A1 between the sloping side and the first straight side in the width direction is 5~30°; the snap-fit ​​end has a sloping structure, and the slope angle A2 between the sloping side and the first straight side in the width direction is 5.5~30°; the angle of A2 is 0.5~5° larger than the angle of A1, and the preferred angles of A1 and A2 are shown in Table 2.

[0188] Table 2 Preferred angles A1 and A2

[0189]

[0190] The angle between the first side of the first tooth profile 161 and the second tooth profile 351 and the horizontal line is between 85° and 125°.

[0191] Preferably, the angle between the first side of the first tooth profile 161 and the second tooth profile 351 and the horizontal line is 90°;

[0192] Furthermore, preferably, the angle between the first side of the first tooth profile 161 and the second tooth profile 351 and the horizontal line is 110°;

[0193] Furthermore, preferably, the angle between the first side of the first tooth profile 161 and the second tooth profile 351 and the horizontal line is 120°.

[0194] The first tooth profile 161 and the second tooth profile 351 have straight sides on their first side.

[0195] The first tooth profile 161 and the second tooth profile 351 have rounded corner radii R1 ranging from 0.1 to 1 mm.

[0196] Preferably, the first tooth profile 161 and the second tooth profile 351 have a rounded corner radius R1 of 0.5 mm at their tips.

[0197] The elastic mechanism can be one or a combination of several of the following: spring, leaf spring, or rubber band.

[0198] Preferably, the elastic mechanism is a spring.

[0199] In transapical mitral chordae repair surgery in cardiac surgery, the device is used for suture fixation, and the specific steps include:

[0200] The patient underwent echocardiography to confirm the extent of mitral chordae injury and valvular function.

[0201] Identify broken key chains;

[0202] Press the clamping latch to align the first clamping hole and the second clamping hole, and switch the device for fixing the suture to the open state;

[0203] The sutures that replace the mitral valve chordae are passed through all the first and second clamping holes and placed inside the clamping assembly;

[0204] Release the clamping latch, and the relative position of the clamping latch and the clamping shell moves to lock and fix the suture, and the device for fixing the suture switches to the closed and locked state;

[0205] Press and hold the buckle, and adjust the relative position and tension of the sutures to ensure that the surgical requirements are met;

[0206] Once the position of the medical suture is fixed, push the locking mechanism from the outside in to make the limiting groove engage with the socket end, thereby restricting the movement of the clamping buckle and thus firmly fixing the relative position of the suture.

[0207] Surgical suturing techniques were used to further fix the sutures to ensure that the repaired tendon could withstand the physiological load of the heart.

[0208] Methods for securing medical sutures in some embodiments include transapical mitral valve margin-to-margin repair combined with chordae tendineae reconstruction in cardiac surgery.

[0209] The overall length of the selected suture fixing device in the closed and locked state is 10~30mm;

[0210] The overall width of the selected suture fixing device in the closed and locked state is 10~30mm;

[0211] The overall thickness of the selected suture fixing device in the closed and locked state is 4~10mm;

[0212] Preferably, the overall length, width, and thickness of the selected suture fixing device in the closed and locked state are shown in Table 3.

[0213] Table 3 Dimensions of devices used for fixing sutures in transapical mitral valve chordae repair surgery

[0214]

[0215] The number of the first clamping holes is 1 to 10.

[0216] Preferably, the number of first clamping holes is 1.

[0217] The first clamping hole is arranged in a single-row array on the clamping shell.

[0218] The diameters of the first and second clamping holes are 0.2~5mm to accommodate sutures of different diameters.

[0219] The preferred diameters of the first and second clamping holes are 1 mm;

[0220] Furthermore, preferably, the diameter of the first clamping hole and the second clamping hole is 2mm;

[0221] Furthermore, preferably, the diameter of the first clamping hole and the second clamping hole is 3mm.

[0222] The shapes of the first and second clamping holes are diverse, including circular, rectangular, arc-shaped, wavy, or triangular forms, among others.

[0223] Preferably, the first clamping hole and the second clamping hole are circular in shape;

[0224] Furthermore, preferably, the first clamping hole and the second clamping hole are shaped like a circular arc wave.

[0225] The inner holes of both the first and second clamping holes are provided with grooves or protrusions of different shapes of teeth, and the tooth designs include trapezoidal, rectangular, arc-shaped, and triangular.

[0226] Preferably, the inner hole teeth of the first clamping hole and the second clamping hole are trapezoidal;

[0227] Furthermore, preferably, the inner tooth shape of the first clamping hole and the second clamping hole is triangular.

[0228] The total number of clamping holes can be any one of 3, 5, 7, or 9.

[0229] Preferably, the number of layers of the first clamping hole is 2, and the number of layers of the second clamping hole is 1;

[0230] Furthermore, preferably, the number of layers in the first clamping hole is 3, and the number of layers in the second clamping hole is 2;

[0231] Furthermore, preferably, the number of layers of the first clamping hole is 4, and the number of layers of the second clamping hole is 3;

[0232] Furthermore, preferably, the number of layers of the first clamping hole is 5, and the number of layers of the second clamping hole is 4.

[0233] The pressing end has a sloping structure, and the slope angle A1 between the sloping side and the first straight side in the width direction is 5~30°; the snap-fit ​​end has a sloping structure, and the slope angle A2 between the sloping side and the first straight side in the width direction is 5.5~30°; the angle of A2 is 0.5~5° larger than the angle of A1, and the preferred angles of A1 and A2 are shown in Table 4.

[0234] Table 4 Preferred angles A1 and A2

[0235]

[0236] The first tooth profile 161 and the second tooth profile 351 have a wavy first side;

[0237] The radii of the wavy arcs on the first side of the first tooth profile 161 and the second tooth profile 351 are the same.

[0238] Preferably, the radius R2 of each segment of the wavy arc of the first tooth profile 161 and the second tooth profile 351 is 0.5 mm.

[0239] The first tooth profile 161 and the second tooth profile 351 have rounded corner radii R1 ranging from 0.1 to 1 mm.

[0240] Preferably, the first tooth profile 161 and the second tooth profile 351 have a rounded corner radius R1 of 0.5 mm at their tips.

[0241] An elastic mechanism is one or a combination of several of the following: spring, leaf spring, or rubber band.

[0242] Preferably, the elastic mechanism is a spring.

[0243] In transapical mitral valve margin-to-margin suture surgery in cardiac surgery, the device is used to fix the suture, and the specific steps include:

[0244] Perform echocardiographic evaluation to determine the specific location and extent of valvular free edge damage or contralateral regurgitation;

[0245] Sutures are inserted at appropriate locations on the anterior and posterior leaflets of the mitral valve, and the sutures are tightened and knotted at the leaflet apex.

[0246] A second echocardiographic assessment was performed to determine the extent and location of residual regurgitation, and an appropriate number of sutures were implanted.

[0247] Pressing the clamping latch aligns the first clamping hole and the second clamping hole, switching the device for fixing the suture to the open state;

[0248] Each suture is individually passed through the corresponding first clamping hole and second clamping hole, and placed inside the clamping assembly;

[0249] Release the clamping latch, and the relative position of the clamping latch and the clamping shell moves to lock and fix the suture, and the device for fixing the suture switches to the closed and locked state;

[0250] Thread multiple sutures through different clamping holes to ensure that the sutures are accurately placed on the valve edge;

[0251] Once the position of the medical suture is fixed, push the locking mechanism from the outside in to make the limiting groove engage with the socket end, thereby restricting the movement of the clamping buckle and thus firmly fixing the relative position of the suture.

[0252] Surgical suturing techniques were used to further fix the sutures to ensure that the repaired tendon could withstand the physiological load of the heart.

[0253] Those skilled in the art will understand that, in the methods described in the specific embodiments, the order in which the steps are written does not imply a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of each step should be determined by its function and possible internal logic.

[0254] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0255] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and not to limit them; although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this application or equivalent substitutions can be made to some technical features, all of which should be covered within the scope of the technical solutions claimed in this application.

Claims

1. A medical suture lock device, characterized by, It includes a clamping shell (1), a clamping latch (2), a locking mechanism (3), and a spring-back mechanism (4); The clamping shell (1) is connected to the clamping latch (2) in a socket-type manner. The clamping latch (2) is inserted into the clamping shell (1) and can move linearly. It cooperates with the clamping shell (1) to achieve clamping of the medical suture (5). The locking mechanism (3) and the clamping housing (1) are connected by a slide rail slot structure. The locking mechanism (3) is engaged in the track slot of the clamping housing (1). The locking mechanism (3) is symmetrically hinged on both sides of the clamping housing (1), or The locking mechanism (3) is hinged to one side of the clamping housing (1); The spring-back mechanism (4) is installed between the clamping housing (1) and the clamping latch (2) to ensure that the clamping latch (2) can automatically spring back to the closed and locked state after the tension force is applied; The medical suture (5) is sleeved between the clamping shell (1) and the clamping buckle (2) and is fixed by a clamping connection.

2. The apparatus of claim 1, wherein, The clamping housing (1) includes a receiving slot (11), a first clamping hole (12), a guide groove (13), a slide rail groove (14), an end slot (15), and a first anti-disengagement tooth (16). The socket (11) is located at the middle position of the front surface of the clamping housing (1) in the width direction, and the socket (11) is a blind hole structure; The first clamping hole (12) is a through hole, located in the middle of the upper and lower surfaces of the clamping shell (1) in the thickness direction; The guide groove (13) is located on both sides of the socket (11), and is an arc-shaped groove structure with limiting ends at both ends; The slide rail groove (14) is located at the end of the upper and lower surfaces of the clamping housing (1) in the thickness direction, close to the front surface in the width direction, and is a blind groove with both ends limited; The end slot (15) is located at the end of the left and right surfaces in the length direction of the clamping shell (1) near the front surface in the width direction, and is a blind hole structure; The first anti-detachment tooth (16) is located on the entire front surface of the clamping housing (1) in the width direction, and has a left-right symmetrical structure, or It has a unidirectional tooth structure.

3. The apparatus of claim 2, wherein, The clamping latch (2) includes a pressing end (21), a receiving end (22), a second clamping hole (23), a guide post (24), a limiting post (25), and a connecting rib (26). The pressing end (21) is located at one end of the clamping latch (2); The socket end (22) is an extension of the pressing end (21), and the cross-sectional dimensions of the socket end (22) are smaller than those of the pressing end (21). The second clamping hole (23) is located at the middle position of the upper and lower surfaces in the thickness direction of the socket end (22); The guide posts (24) are located on the left and right sides of the socket end (22) in the width direction and are symmetrically distributed; The limiting post (25) is an extension of the guide post (24), and the cross-sectional dimensions of the guide post (24) are smaller than those of the limiting post (25). The connecting rib (26) is the connection part between the socket end (22) and the limiting post (25).

4. The apparatus of claim 3, wherein, The locking mechanism (3) includes a snap-fit ​​end (31), a limiting groove (32), a slide rail snap head (33), an end snap head (34), and a second anti-disengagement tooth (35); The snap-fit ​​end (31) is located on the upper and lower surfaces of the locking mechanism (3) in the thickness direction; The limiting groove (32) is located in the middle of the thickness direction of the locking mechanism (3), and its length direction is open on the side near the socket end (22); The slide rail head (33) is located at the end of the upper and lower surfaces in the thickness direction of the locking mechanism (3) near the front surface in the width direction, and has a left-right symmetrical structure; The end cap (34) is located at the end of the left surface of the locking mechanism (3) in the length direction near the front surface in the width direction; The second anti-detachment tooth (35) is located on the front surface of the locking mechanism (3) in the width direction, excluding the slide rail head (33) and the end head (34), and has a left-right symmetrical structure.

5. The apparatus of claim 3, wherein, The rebound mechanism (4) is a spring, leaf spring or rubber band; The springback mechanism (4) is sleeved on the limiting post (25) and placed in the guide groove (13).

6. The apparatus of claim 4, wherein, The first anti-detachment tooth (16) and the second anti-detachment tooth (35) have a tooth structure consisting of a set of serrated teeth. The tooth profiles of the first anti-detachment tooth (16) and the second anti-detachment tooth (35) correspond to the first tooth profile (161) and the second tooth profile (351).

7. The apparatus of claim 3, wherein, The first clamping hole (12) and the second clamping hole (23) are circular, rectangular, wavy, or triangular in shape to accommodate the needs of different sutures.

8. The apparatus of claim 3, wherein, The inner holes of the first clamping hole (12) and the second clamping hole (23) are both provided with teeth of different shapes, and the tooth designs include trapezoidal, rectangular, arc-shaped, and triangular; or The inner hole is a granular protrusion structure, which is evenly distributed on the inner hole of the first clamping hole (12) and the second clamping hole (23). The protrusion is a conical structure, including a cone, a tetrahedral cone and a polyhedral cone.

9. The apparatus according to claim 3, characterized in that, The total number of layers of the first clamping hole (12) and the second clamping hole (23) is any one of 3, 5, 7 or 9. The first clamping hole (12) and the second clamping hole (23) are distributed alternately, and the first clamping hole (12) of the clamping shell (1) has one more layer than the second clamping hole (23) of the clamping latch (2) to improve the clamping force.

10. The apparatus according to claim 3, characterized in that, The number of single layers of the first clamping hole (12) and the second clamping hole (23) is 1 to 10; The first clamping hole (12) and the second clamping hole (23) are arranged in a circumferential array; or The first clamping hole (12) and the second clamping hole (23) are arranged in a symmetrical pattern of 1 to 4 rows.

11. The apparatus according to claim 3, characterized in that, The pressing end (21) is a sloping structure, and the slope angle A1 between the sloping side and the first straight side in the width direction is 5~30°.

12. The apparatus according to claim 4, characterized in that, The snap-fit ​​end (31) is a sloping structure, and the slope angle A2 between the sloping side and the first straight side in the width direction is 5.5~30°; The angle of A2 is 0.5 to 5 degrees larger than the angle of A1.

13. The apparatus according to any one of claims 1 to 5, characterized in that, All areas are rounded to prevent secondary damage to internal tissues during the procedure.

14. The apparatus according to claim 6, characterized in that, The angle between the first side of the first tooth profile (161) and the second tooth profile (351) and the horizontal line is 85~125°; The first tooth profile (161) and the second tooth profile (351) have a straight edge on their first side or / and The first side of the first tooth profile (161) and the second tooth profile (351) is a wavy side; The first tooth profile (161) and the second tooth profile (351) have the same or / and the same wavy arc radius for each segment of the first side wavy edge. The radii of the wavy arcs of the first side of the first tooth (161) and the second tooth (351) are not the same; The tips of the first tooth (161) and the second tooth (351) have no rounded corners or / and The first tooth (161) and the second tooth (351) have a rounded corner radius R1 of 0.1~1mm at their tips; The radius R2 of the wavy arc of each segment of the first tooth profile (161) and the second tooth profile (351) is between 0.1 and 1 mm.

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