Meniscal suture device and meniscal suture system

Abstract

The application provides a kind of meniscus suture device and meniscus suture system, the meniscus suture device includes puncture needle, middle tube, inner core, middle tube driving part and inner core driving part;Puncture needle is hollow along its own axial through formation one inner cavity;Inner core is movably threaded in middle tube, middle tube is movably threaded in the inner cavity of puncture needle;Middle tube is connected with middle tube driving part, inner core is connected with inner core driving part, inner core driving part is configured to reciprocate between first position and second position;During the first time that inner core driving part moves from first position to second position, drive inner core to push first suture nail out of the inner cavity of puncture needle, and drive middle tube driving part to move to third position;Middle tube driving part drives middle tube to push second suture nail to pre-release position;During the second time that inner core driving part moves from first position to second position, drive middle tube driving part to move to fourth position;Middle tube driving part drives middle tube to push second suture nail out of the inner cavity of puncture needle.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a meniscus suture device and a meniscus suture system. Background Technology

[0002] The meniscus functions to maintain joint stability, bear weight, and absorb shock. Daily life and sports activities often lead to meniscus injuries, resulting in damage or abnormalities in the meniscus's shape and structure. This can lead to loss of meniscus function, abnormal joint stress distribution, and joint instability. Not only is the protective function of the articular cartilage weakened, but it can also shear and wear down the cartilage. Partially torn menisci can cause joint clicking and locking symptoms, affecting the quality of daily life. Currently, meniscus repair surgery is the most ideal surgical method for treating meniscus injuries; however, existing meniscus repair devices are complex in structure, expensive, and inconvenient to operate.

[0003] In particular, existing meniscus suture devices tend to push both suture staples out during the first firing, and there is also a possibility that the second suture staple may become stuck and fail to be pushed out during the second firing. If these situations occur, they will seriously affect the surgical process, significantly increasing the surgical time and risks. Summary of the Invention

[0004] The purpose of this invention is to provide a meniscus suture device and a meniscus suture system to solve the problems of existing meniscus suture devices being prone to accidental push-in of suture staples or getting stuck when pushing suture staples.

[0005] To solve the above-mentioned technical problems, the present invention provides a meniscus suture device, which includes: a puncture needle, a central tube, an inner core, a central tube driving part, and an inner core driving part; the puncture needle is hollow along its own axis to form an inner cavity;

[0006] The inner core is movably inserted through the middle tube, and the middle tube is movably inserted through the inner cavity of the puncture needle; the middle tube is connected to the middle tube drive part, the inner core is connected to the inner core drive part, and the inner core drive part is configured to reciprocate between a first position and a second position.

[0007] During the initial movement of the inner core drive unit from the first position to the second position, the inner core is driven to push the first suture pin out of the inner cavity of the puncture needle, and the middle tube drive unit is moved to the third position; the middle tube drive unit drives the middle tube to push the second suture pin to the pre-release position;

[0008] As the inner core drive unit moves from the first position to the second position again, it drives the middle tube drive unit to move to the fourth position; the middle tube drive unit drives the middle tube to push the second suture staple out of the inner cavity of the puncture needle.

[0009] Optionally, the meniscus suture device includes a unidirectional drive assembly;

[0010] The unidirectional drive assembly is configured to drive the middle tube drive unit to move as the inner core drive unit moves from the first position to the second position; and to allow relative movement between the inner core drive unit and the middle tube drive unit as the inner core drive unit moves from the second position to the first position; so that when the inner core drive unit drives the middle tube drive unit to move during the first and second movements from the first position to the second position, the position of the middle tube drive unit relative to the inner core drive unit changes in the direction toward the second position.

[0011] Optionally, the unidirectional drive assembly includes an elastic clip, a pushing part, and a resisting part; the elastic clip is disposed on one of the inner core drive part and the middle tube drive part, and the pushing part and the resisting part are disposed on the other of the inner core drive part and the middle tube drive part; wherein the resisting part includes a first resisting surface and a second resisting surface;

[0012] During the initial movement of the inner core drive unit from the first position to the second position, the elastic card abuts against the first abutting surface and drives the middle tube drive unit to move to the third position;

[0013] During the initial movement of the inner core drive unit from the second position to the first position, the elastic card separates from the first abutment surface, and the pushing unit is used to push the elastic card so that the elastic card passes over the second abutment surface;

[0014] During the process of the inner core driving part moving from the first position to the second position again, the elastic card abuts against the second abutting surface and drives the middle tube driving part to move to the fourth position.

[0015] Optionally, the first abutting surface and the second abutting surface are arranged at intervals along the movement direction of the inner core driving part, and the elastic card is arranged at an angle to the movement direction of the inner core driving part when it is not pushed by the pushing part, and the elastic card forms an acute angle with one of the inner core driving part and the middle tube driving part in which it is disposed.

[0016] Optionally, the meniscus suture device has an initial state. When the meniscus suture device is in the initial state, the inner core drive part is located in the first position, the distal end of the middle tube is retracted relative to the distal end of the puncture needle, and an accommodating space is formed between the distal end of the middle tube and the distal end of the puncture needle. The accommodating space is used to accommodate the first suture staple and the second suture staple, wherein the first suture staple is located on the distal side of the second suture staple.

[0017] Optionally, when the meniscus suturer is in the initial state, the distal end of the inner core extends relative to the distal end of the central tube, and the inner core passes through the second suture pin.

[0018] Optionally, the puncture needle includes a curved section, and when the meniscus suturer is in the initial state, the first suture staple is located inside the curved section.

[0019] Optionally, during the initial movement of the inner core drive portion from the first position to the second position, the inner core is used to push the proximal end of the first suture staple to push the first suture staple out of the distal end of the puncture needle;

[0020] During the process of the inner core drive unit moving from the first position to the second position again, the central tube is used to push the proximal end of the second suture staple to push the second suture staple out of the distal end of the puncture needle.

[0021] Optionally, the meniscus suture device includes a potential energy element connected to the inner core drive portion. The potential energy element is used to apply a potential force to the inner core drive portion in a direction toward the first position, so that the inner core drive portion is in the first position when not subjected to external force.

[0022] To address the aforementioned technical problems, the present invention also provides a meniscus suture system, which includes the meniscus suturer as described above, and further includes a first suture staple and a second suture staple; wherein both the first suture staple and the second suture staple are tubular.

[0023] Optionally, the meniscus suture system further includes a suture having a head end and a tail end, the first suture pin being fixedly connected to the suture, and the tail end being movably passed through the second suture pin and the first suture pin in sequence to form a closed loop; when the tail end is pulled, the inner diameter of the loop decreases so that the first suture pin and the second suture pin move closer to each other.

[0024] Optionally, when the two ends of the suture are pulled back, the first or second suture staple shrinks and deforms.

[0025] Optionally, the outer diameter of the tube of the first suture staple and / or the second suture staple is 0.55mm to 0.95mm, and the length is 10mm to 16mm.

[0026] In summary, in the meniscus suture device and meniscus suturing system provided by the present invention, the meniscus suture device includes a puncture needle, a central tube, an inner core, a central tube drive unit, and an inner core drive unit; the puncture needle is hollowly penetrating along its own axial direction to form an inner cavity; the inner core is movably inserted through the central tube, and the central tube is movably inserted through the inner cavity of the puncture needle; the central tube is connected to the central tube drive unit, the inner core is connected to the inner core drive unit, and the inner core drive unit is configured to reciprocate between a first position and a second position; During the initial movement of the inner core drive unit from the first position to the second position, the inner core is driven to push the first suture pin out of the inner cavity of the puncture needle, and the middle tube drive unit is moved to the third position; the middle tube drive unit drives the middle tube to push the second suture pin to the pre-release position; during the subsequent movement of the inner core drive unit from the first position to the second position, the middle tube drive unit is moved to the fourth position; the middle tube drive unit drives the middle tube to push the second suture pin out of the inner cavity of the puncture needle.

[0027] With this configuration, the inner core drive unit initially moves from the first position to the second position, pushing out the first suture pin through the inner core. Then, the inner core drive unit moves back from the first position to the second position, pushing out the second suture pin through the central tube. Because different pushing components (inner core and central tube) are used to push the first and second suture pins respectively, it ensures that one suture pin is accurately and reliably pushed out with each activation, and both suture pins are pushed out through two activations. This solves the problem of existing meniscus suturing devices easily causing suture pin mis-pushing or suture pin jamming during pushing. Attached Figure Description

[0028] Those skilled in the art will understand that the accompanying drawings are provided to better understand the invention and do not constitute any limitation on the scope of the invention. Wherein:

[0029] Figure 1 This is a schematic diagram of a meniscus suture device according to an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of a distal portion of the meniscus suture device according to an embodiment of the present invention;

[0031] Figure 3 This is a schematic axial cross-sectional view of the distal end of the meniscus suture device according to an embodiment of the present invention;

[0032] Figure 4a This is a schematic diagram of a puncture needle according to an embodiment of the present invention, wherein the puncture needle includes a curved portion, and the curved portion is in a positive curved shape;

[0033] Figure 4b This is a schematic diagram of a puncture needle according to an embodiment of the present invention, wherein the puncture needle is straight.

[0034] Figure 4c This is a schematic diagram of a puncture needle according to an embodiment of the present invention, wherein the puncture needle includes a curved portion, and the curved portion is in a reverse curved shape;

[0035] Figure 5 This is an axial cross-sectional schematic diagram of the meniscus suture device according to an embodiment of the present invention, wherein the meniscus suture device is in an initial state;

[0036] Figure 6 yes Figure 5 Enlarged schematic diagram of part A;

[0037] Figure 7 This is an axial cross-sectional schematic diagram of the meniscus suture device according to an embodiment of the present invention, wherein the inner core drive part has completed the first activation and returned to the first position;

[0038] Figure 8 This is an axial cross-sectional schematic diagram of the meniscus suture device according to an embodiment of the present invention, wherein the inner core drive part has completed the second activation and is in the second position;

[0039] Figure 9a This is a schematic diagram of the central tube drive unit according to an embodiment of the present invention;

[0040] Figure 9b This is an axial cross-sectional schematic diagram of a unidirectional drive component according to an embodiment of the present invention, wherein the elastic clip abuts against the first abutting surface;

[0041] Figure 9c This is an axial cross-sectional schematic diagram of a unidirectional drive component according to an embodiment of the present invention, wherein the elastic clip abuts against the second abutting surface;

[0042] Figure 10 This is a schematic diagram of the first suture staple being pushed out of the puncture needle after the first activation of the meniscus suture device according to an embodiment of the present invention;

[0043] Figure 11 This is a schematic diagram of the second suture staple being pushed out of the puncture needle after the second activation of the meniscus suture device according to an embodiment of the present invention;

[0044] Figure 12 This is a schematic diagram of an application scenario of the meniscus suturing system according to an embodiment of the present invention, wherein the meniscus suturer has completed the second activation and pushed the second suture staple out of the puncture needle;

[0045] Figure 13 This is a schematic diagram of an application scenario of the meniscus suture system according to an embodiment of the present invention, wherein the meniscus suture device has been removed and the state of the suture wrapping without knotting is shown.

[0046] Figure 14 This is a schematic diagram of an application scenario of the meniscus suture system according to an embodiment of the present invention, wherein the suture has been tightened and the excess portion has been cut off;

[0047] Figures 15-23 This is a schematic diagram illustrating several examples of the connection relationship between the suture, the first suture staple, and the second suture staple according to embodiments of the present invention.

[0048] In the attached image:

[0049] 100-Puncture needle; 110-Bent section; 120-Side groove; 200-Middle tube; 300-Inner core; 400-Middle tube drive part; 500-Inner core drive part; 510-Push button; 520-Inner core connector; 530-Groove; 610-First suture staple; 620-Second suture staple; 630-Suture; 631-Head end; 632-Tail end; 633-Loop loop; 634-Knotless structure; 700-Handle; 710-Depth limiting component; 711-Depth limiting push button; 712-Depth limiting sleeve; 800-One-way drive component; 810-Elastic clip; 820-Push part; 830-Abutting part; 831-First abutting surface; 832-Second abutting surface; 900-Potential energy element. Detailed Implementation

[0050] To make the objectives, advantages, and features of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and are not drawn to scale, and are only used to facilitate and clarify the explanation of the embodiments of this invention. Furthermore, the structures shown in the drawings are often part of the actual structures. In particular, different figures may emphasize different aspects and may sometimes use different scales.

[0051] As used herein, the singular forms “a,” “an,” and “the” include plural objects; the term “or” is generally used to mean “and / or”; the term “a number” is generally used to mean “at least one”; and the term “at least two” is generally used to mean “two or more”. Furthermore, the terms “first,” “second,” and “third” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as “first,” “second,” or “third” may explicitly or implicitly include one or at least two of that feature; “one end” and “the other end,” and “proximal” and “distal” generally refer to two corresponding parts, which include not only the endpoints. The terms “proximal” and “distal” are defined herein with respect to a meniscus suture device having an end for insertion into the body and a control end extending outside the body. The term "proximal" refers to the position of the element closer to the manipulator's protruding end, while the term "distal" refers to the position of the element closer to the end of the meniscus suture inserted into the body. Optionally, in manual or hand-operated applications, the terms "proximal" and "distal" are defined herein relative to the operator, such as a surgeon or clinician. The term "proximal" refers to the position of the element closer to the operator, and the term "distal" refers to the position of the element further away from the operator. Furthermore, as used in this invention, terms such as "mounted," "connected," "attached," and "set" of one element on another should be interpreted broadly, generally indicating only a connection, coupling, engagement, or transmission relationship between the two elements, which can be direct or indirect through an intermediate element. It should not be construed as indicating or implying a spatial positional relationship between the two elements, i.e., one element can be located inside, outside, above, below, or to one side of the other element, unless otherwise explicitly stated. Those skilled in the art will understand the specific meaning of the above terms in this invention according to the specific circumstances. Furthermore, directional terms such as above, below, up, down, upward, downward, left, right, etc., are used relative to exemplary embodiments as they are shown in the figures, with upward or up direction pointing towards the top of the corresponding figure, and downward or down direction pointing towards the bottom of the corresponding figure.

[0052] The purpose of this invention is to provide a meniscus suture device and a meniscus suture system to solve the problems of existing meniscus suture devices easily causing accidental push-in of suture staples or jamming during suture staple push-in. The following description refers to the accompanying drawings.

[0053] Please refer to Figures 1 to 8This invention provides a meniscus suture device, comprising: a puncture needle 100, a central tube 200, an inner core 300, a central tube drive part 400, and an inner core drive part 500; the puncture needle 100 is hollowly penetrating along its own axial direction to form an inner cavity; the inner core 300 is movably inserted through the central tube 200, and the central tube 200 is movably inserted through the inner cavity of the puncture needle 100; the central tube 200 is connected to the central tube drive part 400, and the inner core 300 is connected to the inner core drive part 500, the inner core drive part 500 being configured in a first position (see...). Figure 5 As shown in B) and the second position (see Figure 8 As shown in C), the inner core drive unit 500 moves back and forth between the first and second positions. During the initial movement of the inner core drive unit 500 from the first position to the second position, it drives the inner core 300 to push the first suture staple 610 out of the inner cavity of the puncture needle 100, and drives the middle tube drive unit 400 to move to the third position (see Figure C). Figure 7 (as shown); the central tube drive unit 400 drives the central tube 200 to push the second suture staple 620 to the pre-release position; as the inner core drive unit 500 moves from the first position to the second position again, it drives the central tube drive unit 400 to move to the fourth position (see...). Figure 8 (As shown); the central tube drive unit 500 drives the central tube 200 to push the second suture nail 620 out of the inner cavity of the puncture needle 100.

[0054] With this configuration, the inner core drive unit 500 initially moves from the first position to the second position, pushing out the first suture 610 via the inner core 300. Then, the inner core drive unit 500 moves back from the first position to the second position, pushing out the second suture 620 via the central tube 200. Because different pushing components (inner core 300 and central tube 200) are used to push out the first suture 610 and the second suture 620 respectively, it ensures that one suture is accurately and reliably pushed out with each activation, and both sutures are pushed out through two activations. This solves the problem of existing meniscus suturing devices easily causing suture mis-pushing or suture jamming during pushing.

[0055] Understandably, the puncture needle 100 has an axially penetrating inner cavity, and the outer diameter of the central tube 200 is slightly smaller than the inner diameter of the inner cavity of the puncture needle 100, allowing the central tube 200 to be movably inserted into the inner cavity of the puncture needle 100. Similarly, the central tube 200 is hollow and penetrating along its own axial direction, and the outer diameter of the inner core 300 is slightly smaller than the inner diameter of the central tube 200, allowing the inner core 300 to be movably inserted into the central tube 200. Preferably, the puncture needle 100 has a certain degree of rigidity, and its distal end is sharp, enabling it to puncture the target object, such as a patient's meniscus. In some embodiments, the puncture needle 100 may be straight; in other embodiments, the puncture needle 100 may have a certain degree of curvature or arc, in which case its axis is also correspondingly curved or arc-shaped. The central tube 200 and the inner core 300 can be bent radially, so that when moving within the inner cavity through which the puncture needle 100 penetrates, they bend along with the curvature of the puncture needle 100, and their axes also bend accordingly. Since the axes of the puncture needle 100, the middle tube 200 and the inner core 300 may be bent or have an arc, regardless of whether the axes of the puncture needle 100, the middle tube 200 and the inner core 300 are straight or bent, the extension direction of the axes of the three at the proximal end coincides with the axis of the handle 700.

[0056] In one example, for ease of operation, the meniscus suture device also includes a handle 700, and components such as a puncture needle 100, a central tube 200, an inner core 300, a central tube drive unit 400, and an inner core drive unit 500 are all mounted on the handle 700. Preferably, the puncture needle 100, central tube 200, and inner core 300 are arranged coaxially, with the proximal extension direction of their axes coinciding with the axis of the handle 700. The inner core drive unit 500 includes a push button 510 and an inner core connector 520 connected together. The push button 510 extends through the housing of the handle 700 for operator operation. The inner core connector 520 is fixedly connected to the inner core 300. Thus, by pushing the push button 510, the operator can move the inner core 300 via the inner core connector 520.

[0057] For further details, please refer to... Figures 5 to 8 The line connecting the first position and the second position is oriented along the axial direction of the handle 700, wherein the first position is located on the side near the proximal end of the handle 700. Figures 5 to 8 The right side of the handle 700), the second position is located on the side near the far end of the handle 700. Figures 5 to 8 (Left side of the middle). That is to say, the inner core drive unit 500 is in the first position (see left side of the middle). Figure 5 As shown in B) to the second position (see Figure 8 The movement in the direction shown in C) is a movement towards the distal end relative to the handle 700, for example, by pushing the push button 510 towards the distal end. Conversely, the movement of the inner core drive unit 500 from the second position to the first position is a movement towards the proximal end relative to the handle 700.

[0058] Please refer to Figure 2 and Figure 3 The first suture 610 and the second suture 620 are both tubular. The meniscus suturer has an initial state. When the meniscus suturer is in the initial state, the inner core drive part 500 is located in the first position, and the distal end of the middle tube 200 is recessed relative to the distal end of the puncture needle 100. A receiving space is formed between the distal end of the middle tube 200 and the distal end of the puncture needle 100. The receiving space is used to receive the first suture 610 and the second suture 620, wherein the first suture 610 is located on the distal side of the second suture 620. Figure 2 and Figure 3 In the first suture 610, the first suture pin 610 is located to the left of the second suture pin 620. Furthermore, when the meniscus suture device is in the initial state, the distal end of the inner core 300 extends relative to the distal end of the central tube 200, and the inner core 300 passes through the second suture pin 620.

[0059] Please refer to Figure 3 and Figure 10 The first activation occurs when the inner core drive unit 500 moves from the first position to the second position. During this first activation, the inner core 300 pushes the proximal end of the first suture 610 to push the first suture 610 out of the distal end of the puncture needle 100. During the first activation, the inner core drive unit 500 drives the inner core 300 to move distally, at least a portion of the distal end of the inner core 300 abuts against the proximal end of the first suture 610, thereby pushing the first suture 610 out of the distal end of the puncture needle 100, thus achieving the implantation of the first suture 610.

[0060] like Figure 3 , Figure 4a and Figure 4c As shown, in some embodiments, the puncture needle 100 includes a curved section 110, and when the meniscus suture device is in the initial state, the first suture 610 is located inside the curved section 110. With this configuration, as the inner core 300 moves distally, it first moves in a straight line, thereby abutting against the proximal end of the first suture 610 housed in the curved section 110. It should be noted that the proximal end of the first suture 610 is not limited to including the proximal end face of the tubular first suture 610, but can also be understood as including a portion of the first suture 610 located proximally. As the inner core 300 moves distally, it can penetrate the first suture 610 and abut and compress against the inner wall of the first suture 610, thereby expelling the first suture 610 from the puncture needle 100. Figure 4bAs shown, in some embodiments, the puncture needle 100 may be straight and may not include the curved section 110. In this case, the outer diameter of the inner core 300 may be slightly larger than the inner diameter of the first suture 610, so that the inner core 300 can push the first suture 610 out of the puncture needle 100 by pushing against the proximal end face of the first suture 610. Figures 4a to 4c The different shapes of the puncture needle 100 shown can be selected according to different surgical needs.

[0061] Please refer to Figure 11 and in conjunction with references Figure 3 The inner core drive unit 500 moves from the first position to the second position again, which is called the second activation. During the second activation, the central tube 200 is used to push the proximal end of the second suture 620 to push the second suture 620 out of the distal end of the puncture needle 100. The inner diameter of the second suture 620 is slightly larger than the outer diameter of the inner core 300, so that the second suture 620 can move axially along the inner core 300. The inner diameter of the central tube 200 is not larger than the outer diameter of the second suture 620, so that when the central tube 200 moves distally, it can push the second suture 620 and push the second suture 620 out of the puncture needle 100.

[0062] Understandably, the inner core drive unit 500 will also move further away during the second excitation process. However, at this time, the inner core 300 does not contribute to the pushing of the second suture 620; the second suture 620 is pushed by the central tube 200. Thus, during the two excitation processes, the first suture 610 is pushed by the inner core 300, and the second suture 620 is pushed by the central tube 200. The two are independent of each other, ensuring that one suture is accurately and reliably pushed out with each excitation, and that both sutures are pushed out through two excitations.

[0063] To facilitate operation and simplify the operation logic, this embodiment of the invention utilizes the same inner core driving part 500 to achieve two excitations by moving from the first position to the second position twice, instead of independently setting two different driving parts to drive the two suture staples separately. This can effectively avoid misoperation, has a foolproof effect, and can avoid problems such as jamming caused by driving the second suture staple 620 located at the proximal end first.

[0064] To prevent the inner core drive unit 500 from driving the middle tube drive unit 400 and pushing the second suture staple 620 out of the puncture needle 100 during the first activation process, in this embodiment, the meniscus suture device includes a one-way drive assembly 800. The one-way drive assembly 800 is configured to drive the middle tube drive unit 400 to move during the movement of the inner core drive unit 500 from the first position to the second position; and to allow relative movement between the inner core drive unit 500 and the middle tube drive unit 400 during the movement of the inner core drive unit 500 from the second position to the first position. This ensures that when the inner core drive unit 500 drives the middle tube drive unit 400 to move during the first and second movements from the first position to the second position, the position of the middle tube drive unit 400 relative to the inner core drive unit 500 changes towards the second position.

[0065] To simplify, the unidirectional drive assembly 800 only performs unidirectional transmission. During the movement of the inner core drive section 500 from the first position to the second position (i.e., during the movement towards the distal end), the unidirectional drive assembly 800 can transmit power, thus driving the middle tube drive section 400 to move towards the distal end. However, during the movement of the inner core drive section 500 from the second position to the first position (i.e., during the movement towards the proximal end), the unidirectional drive assembly 800 does not transmit power (or the transmission is not 1:1), thus the middle tube drive section 400 is not driven to move towards the proximal end (or the movement towards the proximal end is less than the movement of the inner core drive section 500 towards the proximal end). In this way, during the movement of the inner core drive section 500 from the second position to the first position, the relative positional relationship between the inner core drive section 500 and the middle tube drive section 400 is effectively changed. Figure 5 and Figure 7 As shown, after the inner core drive unit 500 completes its first activation and returns to the first position, the middle tube drive unit 400 is pushed to the distal end of the inner core drive unit 500 by the action of the unidirectional drive assembly 800. That is, the middle tube drive unit 400 is moved to a position closer to the second position relative to the inner core drive unit 500.

[0066] With this configuration, during the first activation, the inner core 300 pushes out the first suture 610. Simultaneously, the inner core drive unit 500 drives the middle tube drive unit 400 to move distally. The middle tube drive unit 400 drives the middle tube 200 to push the second suture 620 distally to the pre-release position. Thus, during the second activation, the middle tube drive unit 400 can drive the middle tube 200 to push the second suture 620 out of the puncture needle 100. That is, the pushing stroke of the second suture 620 is segmented. During the first activation, the second suture 620 is pushed distally by the middle tube 200 for a certain distance, bringing it close to the distal opening of the puncture needle 100 and reaching the pre-release position. Thus, during the second activation, the second suture 620 is pushed directly out from the distal opening of the puncture needle 100 by the middle tube 200, reducing or avoiding idle strokes and ensuring that the second suture 620 is not pushed out of the puncture needle 100 during the first activation, thus preventing accidental release.

[0067] Please refer to Figures 5 to 9c In an alternative example, the unidirectional drive assembly 800 includes a resilient clip 810, a pushing portion 820, and a retaining portion 830; the resilient clip 810 is disposed on one of the inner core drive portion 500 and the middle tube drive portion 400, and the pushing portion 820 and the retaining portion 830 are disposed on the other of the inner core drive portion 500 and the middle tube drive portion 400; wherein the retaining portion 830 includes a first retaining surface 831 and a second retaining surface 832; during the initial movement of the inner core drive portion 500 from the first position to the second position, the resilient clip 810 and the... The first abutment surface 831 abuts against the inner core drive unit 400, which then moves the inner core drive unit 500 to the third position. During the initial movement of the inner core drive unit 500 from the second position to the first position, the elastic card 810 separates from the first abutment surface 831, and the pushing unit 820 pushes the elastic card 810 so that the elastic card 810 passes over the second abutment surface 832. During the subsequent movement of the inner core drive unit 500 from the first position to the second position, the elastic card 810 abuts against the second abutment surface 832, which then moves the inner core drive unit 400 to the fourth position.

[0068] like Figures 5 to 9cAs shown, the elastic card 810 is disposed on the central tube drive portion 400, and the pushing portion 820 and the abutting portion 830 are disposed on the inner core drive portion 500. The first abutting surface 831 and the second abutting surface 832 are arranged at intervals along the movement direction of the inner core drive portion 500. Optionally, the first abutting surface 831 and the second abutting surface 832 are arranged at intervals along the axial direction of the handle 700, with the first abutting surface 831 located relatively closer to the first position and the second abutting surface 832 located relatively further away from the first position, that is, the first abutting surface 831 is located on the proximal side of the second abutting surface 832. In one embodiment, the inner core drive portion 500 has a groove 530 formed radially along the handle 700, the groove 530 extending away from the central tube drive portion 400 ( Figures 5 to 8 The groove 530 is recessed (facing upwards), with the first abutment surface 831 located on the proximal sidewall of the groove 530. The pushing part 820 is located at the distal end of the groove 530 and moves towards the central tube driving part 400. Figures 5 to 8 The middle part (facing downwards) protrudes. The second abutment surface 832 is disposed on the distal end surface of the inner core drive portion 500. In another embodiment, as... Figure 9b and Figure 9c As shown, the inner core drive section 500 has a toothed inner wall, and the first abutment surface 831 and the second abutment surface 832 are respectively disposed on the toothed inner wall of the inner core drive section 500.

[0069] like Figure 5 and Figure 9b As shown, when the meniscus suture device is in its initial state, the elastic clip 810 abuts against the first abutment surface 831. During the first activation process, the inner core drive unit 500 moves distally ( Figure 5 and Figure 9b The first abutment surface 831 moves to the left, pressing against the elastic clip 810 and moving towards the far end, thereby driving the middle tube drive unit 400 to move towards the far end as well. Until the inner core drive unit 500 reaches the second position, the middle tube drive unit 400 is driven to move to the third position.

[0070] Then, the inner core drive unit 500 moves from the second position to the first position. During this process, the elastic card 810 separates from the first abutment surface 831, and the pushing unit 820 presses the elastic card 810 towards the central tube drive unit 400. At this time, the movement of the inner core drive unit 500 no longer drives the central tube drive unit 400 to move, or the inner core drive unit 500 slightly drives the central tube drive unit 400 to move a small amount towards the proximal end through the friction between the pushing unit 820 and the elastic card 810. After the pushing unit 820 passes the elastic card 810, the inner core drive unit 500 can separate from the central tube drive unit 400.

[0071] Thus, the inner core drive unit 500 is first activated and returns to the first position, causing the middle tube drive unit 400 to... Figure 5 The position was moved to the far end Figure 7 The position of the central tube drive unit 400 relative to the inner core drive unit 500 also changed from Figure 9b The state was changed to Figure 9c The second suture staple 620 is simultaneously pushed to the pre-excitation position, as shown in the image. Figure 10 As shown.

[0072] from Figure 7 and Figure 9c The state begins, and during the second excitation process, the inner core drive unit 500 moves towards the distal end ( Figure 7 Moving to the left (center), since the central tube drive unit 400 has been moved to the distal end of the inner core drive unit 500, it moves distally along with the elastic clip 810 via the second abutment surface 832, thereby driving the central tube drive unit 400 to move distally as well. Until the inner core drive unit 500 reaches the second position, the central tube drive unit 400 is moved to the fourth position, as... Figure 8 As shown. During this process, the second suture staple 620 is simultaneously pushed out of the puncture needle 100, as... Figure 11 As shown.

[0073] Preferably, the elastic card 810 is arranged at an angle to the movement direction of the inner core drive unit 500 when not pushed by the pusher 820, and the elastic card 810 forms an acute angle with one of the inner core drive unit 500 and the middle tube drive unit 400 to which it is disposed. Figures 5 to 9c In the example shown, the elastic card 810 is disposed on the central tube drive unit 400, and the elastic card 810 and the central tube drive unit 400 form an acute angle, so that the push unit 820 can press down the elastic card 810 with less resistance.

[0074] The above Figures 5 to 9c In the illustrated example, the elastic card 810 is disposed on the central tube drive section 400, and the pushing section 820 and the abutting section 830 are disposed on the inner core drive section 500. It is understood that in other embodiments, the elastic card 810 may be disposed on the inner core drive section 500, while the pushing section 820 and the abutting section 830 may be disposed on the central tube drive section 400. In this case, the first abutting surface 831 is located on the distal side of the second abutting surface 832, achieving a similar effect. This embodiment will not repeat the description.

[0075] in addition, Figures 5 to 9c The example shown is merely one example of a one-way drive assembly 800 and not a limitation thereof. In other embodiments, the one-way drive assembly 800 may also include components commonly used in the art, such as ratchet teeth or magnetic attractants, so that the one-way drive assembly 800 can achieve similar effects. This embodiment will not elaborate further.

[0076] Please continue to refer to this. Figures 5 to 8 Optionally, the meniscus suture device includes a potential energy element 900 connected to the inner core drive unit 500. The potential energy element 900 applies a potential force to the inner core drive unit 500 in the direction of the first position, so that the inner core drive unit 500 is in the first position when not subjected to external force. Preferably, one end of the potential energy element 900 is connected to the handle 700, and the other end is connected to the inner core drive unit 500. Based on the configuration of the potential energy element 900, it can store potential energy during the process of pushing the push button 510 to move distally. After the inner core drive unit 500 is pushed to the second position, it is not necessary to push the inner core drive unit 500 back to the first position. Instead, the potential energy element 900 releases its stored potential energy, thereby pulling the inner core drive unit 500 back to the first position. This facilitates the reliable return of the inner core drive unit 500 to the first position and also makes operation easier. Potential energy component 900 may include elastic potential energy components or magnetic potential energy components, such as springs or magnetic potential energy components that can attract each other. Its specific structure can be understood by referring to existing technologies.

[0077] Optional, such as Figure 10 and Figure 11 As shown, the puncture needle 100 has a radially opening side groove 120 that penetrates the side wall of the puncture needle 100 and extends axially along the puncture needle 100. During assembly, the first suture 610 and the second suture 620 can be inserted into the puncture needle 100 from the distal end, and the side groove 120 allows the suture 630 (see description below) to pass through. Furthermore, the side groove 120 facilitates adjustment of the position of the central tube 200.

[0078] Optional, please refer to Figure 5 The meniscus suture device also includes a depth limiting component 710, which includes a depth limiting push button 711 and a depth limiting sleeve 712. The depth limiting push button 711 is movably disposed on the handle 700, while the depth limiting sleeve 712 is fixed on the handle 700. The depth limiting push button 711 is used to adjust the extension length of the puncture needle 100 relative to the depth limiting sleeve 712, thereby adjusting the puncture depth of the puncture needle 100.

[0079] Based on the meniscus suture device described above, embodiments of the present invention also provide a meniscus suturing system, which includes the meniscus suture device described above, and further includes a first suture staple 610 and a second suture staple 620; wherein both the first suture staple 610 and the second suture staple 620 are tubular. Preferably, the meniscus suturing system is manufactured with both the first suture staple 610 and the second suture staple 620 pre-assembled within the puncture needle 100 to reduce or prevent dislodgement during transportation, storage, and surgical preparation.

[0080] For further details, please refer to... Figures 12 to 23 The meniscus suture system further includes a suture 630, which is connected to a first suture staple 610 and a second suture staple 620. Preferably, in some embodiments, the suture 630 has a head end 631 and a tail end 632. The first suture staple 610 is fixedly connected to the suture 630, and the tail end 632 can movably pass through the second suture staple 610 and the first suture staple 620 in sequence to form a closed loop 633. It is understood that the second suture staple 620 passes through the loop 633 and can move on the loop 633. By pulling the tail end 632, the inner diameter of the loop 633 can be reduced, bringing the first suture staple 610 and the second suture staple 620 closer together, thereby achieving suture fixation of the target tissue.

[0081] Optionally, the materials of the first suture 610, the second suture 620, and the suture 630 are medical polymer materials, specifically absorbable materials such as polyglycolic acid (PGA), polylactic acid (PLA), polydioxanone (PDO), and polyglycolic acid lactate (PGLA). They can also be non-absorbable materials such as polypropylene, polyethylene (including ultra-high molecular weight polyethylene), nylon 6, nylon 66, polyester, polytetrafluoroethylene (PTFE), and polyvinylidene fluoride (PVDF). Optionally, the first suture 610 and the second suture 620 can be formed by winding or weaving filaments similar to or the same as the suture 630. Optionally, the first suture 610 and the second suture 620 are woven from multiple strands of monofilaments or composite filaments. Optionally, the outer diameter of the tube of the first suture 610 and / or the second suture 620 is 0.55 mm to 0.95 mm, and the length is 10 mm to 16 mm. Since the first suture 610 and the second suture 620 are structures formed by winding or weaving wire, they are relatively soft and easily deformable, and can better fit the meniscus, resulting in less trauma to the human body.

[0082] Furthermore, the suture 630 is preferably a mesh-like braid, which, in cross-section, can be round, flat, or a combination of round and flat yarns. The suture 630 can be formed by single-strand or multi-strand braiding. The combination of single and multi-strand sutures, and round and flat yarns, provides sufficient gaps for human tissue to ingrow into the formed implant structure. Figure 12 As shown, when the two ends of the suture 630 are pulled, the first suture staple 610 or the second suture staple 620 can contract to form a "U" shape or an "Ω" shape, thereby getting stuck on the target tissue.

[0083] The following is combined Figures 12 to 14 The steps for using the meniscus suture system provided in this embodiment are illustrated in an exemplary manner.

[0084] After selecting the implantation site for the first suture staple 610, the puncture needle 100 is inserted, and the push button 510 is pushed distally to its maximum travel position. The inner core drive unit 500 moves from the first position to the second position, completing the first activation, and the first suture staple 610 is pushed out of the puncture needle 100. At this time, the suture 630 can be pulled back, causing the first suture staple 610 to retract and lock onto the target tissue.

[0085] Release the push button 510, and the inner core drive unit 500 returns to the first position. Withdraw the puncture needle 100, insert the puncture needle 100 into the implantation site of the second suture 620, and push the push button 510 distally again to its travel limit. The inner core drive unit 500 moves from the first position to the second position, completing the second activation, and the second suture 620 is ejected from the puncture needle 100. The current state is as follows: Figure 12 As shown. Then, pull the suture 630 to cause the second staple 620 to contract and lock onto the target tissue, as shown. Figure 13 As shown.

[0086] like Figure 12 and Figure 13 As shown, after the first or second stimulation is completed, pulling the suture 630 can tighten the first suture staple 610, thereby embedding the head end 631 of the suture 630 into the target tissue.

[0087] like Figure 13 As shown, and in conjunction with reference Figures 15 to 23 After the second stimulation is completed, pulling the suture 630 tightens the second staple 620, allowing the end 632 of the suture 630 to form a knotless structure 634. The steps for forming the knotless structure 634 include: wrapping the end 632 of the suture 630 several times around the loop 633 and then wrapping it in the opposite direction once. This forms a knot when the end 632 of the suture 630 is tightened, and the knot is embedded in the target tissue during the tightening process. Finally, the excess suture 630 is cut off, resulting in the final implantation state on the meniscus as shown. Figure 14 As shown.

[0088] In summary, in the meniscus suture device and meniscus suturing system provided by the present invention, the meniscus suture device includes a puncture needle, a central tube, an inner core, a central tube drive unit, and an inner core drive unit; the puncture needle is hollowly penetrating along its own axial direction to form an inner cavity; the inner core is movably inserted through the central tube, and the central tube is movably inserted through the inner cavity of the puncture needle; the central tube is connected to the central tube drive unit, the inner core is connected to the inner core drive unit, and the inner core drive unit is configured to reciprocate between a first position and a second position; During the initial movement of the inner core drive unit from the first position to the second position, the inner core pushes the first suture pin out of the lumen of the puncture needle, and moves the middle tube drive unit to the third position. The middle tube drive unit then drives the middle tube to push the second suture pin to the pre-release position. During the subsequent movement of the inner core drive unit from the first position to the second position, the middle tube drive unit moves to the fourth position. The middle tube drive unit then drives the middle tube to push the second suture pin out of the lumen of the puncture needle. With this configuration, when the inner core drive unit first moves from the first position to the second position, it can push out the first suture pin through the inner core. Similarly, when the inner core drive unit moves from the first position to the second position again, it can push out the second suture pin through the middle tube. Because different pushing components (inner core and middle tube) are used to push the first and second suture pins respectively, it ensures that one suture pin is accurately and reliably pushed out with each stimulation, and both suture pins are pushed out through two stimulations. This solves the problem of existing meniscus suturing devices easily causing suture pin mis-pushing or suture pin jamming during pushing.

[0089] It should be noted that the above embodiments can be combined with each other. The above description is only a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the present invention.

Claims

1. A meniscus suture device, characterized in that, include: The puncture needle comprises a central tube, an inner core, a central tube drive unit, and an inner core drive unit; the puncture needle is hollowly perforated along its own axial direction to form an inner cavity. The inner core is movably inserted through the middle tube, and the middle tube is movably inserted through the inner cavity of the puncture needle; the middle tube is connected to the middle tube drive part, the inner core is connected to the inner core drive part, and the inner core drive part is configured to reciprocate between a first position and a second position. During the initial movement of the inner core drive unit from the first position to the second position, the inner core is driven to push the first suture pin out of the inner cavity of the puncture needle, and the middle tube drive unit is moved to the third position; the middle tube drive unit drives the middle tube to push the second suture pin to the pre-release position; As the inner core drive unit moves from the first position to the second position again, it drives the middle tube drive unit to move to the fourth position; the middle tube drive unit drives the middle tube to push the second suture staple out of the inner cavity of the puncture needle.

2. The meniscus suture device according to claim 1, characterized in that, The meniscus suture device includes a unidirectional drive assembly; The unidirectional drive assembly is configured to drive the middle tube drive unit to move as the inner core drive unit moves from the first position to the second position; and to allow relative movement between the inner core drive unit and the middle tube drive unit as the inner core drive unit moves from the second position to the first position; so that when the inner core drive unit drives the middle tube drive unit to move during the first and second movements from the first position to the second position, the position of the middle tube drive unit relative to the inner core drive unit changes in the direction toward the second position.

3. The meniscus suture device according to claim 2, characterized in that, The unidirectional drive assembly includes an elastic clip, a pushing part, and a resisting part; the elastic clip is disposed on one of the inner core drive part and the middle tube drive part, and the pushing part and the resisting part are disposed on the other of the inner core drive part and the middle tube drive part; wherein the resisting part includes a first resisting surface and a second resisting surface; During the initial movement of the inner core drive unit from the first position to the second position, the elastic card abuts against the first abutting surface and drives the middle tube drive unit to move to the third position; During the initial movement of the inner core drive unit from the second position to the first position, the elastic card separates from the first abutment surface, and the pushing unit is used to push the elastic card so that the elastic card passes over the second abutment surface; During the process of the inner core driving part moving from the first position to the second position again, the elastic card abuts against the second abutting surface and drives the middle tube driving part to move to the fourth position.

4. The meniscus suture device according to claim 3, characterized in that, The first abutting surface and the second abutting surface are arranged at intervals along the movement direction of the inner core driving part. When the elastic card is not pushed by the pushing part, it is arranged at an angle to the movement direction of the inner core driving part, and the elastic card forms an acute angle with one of the inner core driving part and the middle tube driving part in which it is disposed.

5. The meniscus suture device according to claim 1, characterized in that, The meniscus suture device has an initial state. When the meniscus suture device is in the initial state, the inner core drive part is located in the first position, the distal end of the middle tube is retracted relative to the distal end of the puncture needle, and an accommodating space is formed between the distal end of the middle tube and the distal end of the puncture needle. The accommodating space is used to accommodate the first suture staple and the second suture staple, wherein the first suture staple is located on the distal side of the second suture staple.

6. The meniscus suture device according to claim 5, characterized in that, When the meniscus suture device is in the initial state, the distal end of the inner core extends relative to the distal end of the central tube, and the inner core passes through the second suture staple.

7. The meniscus suture device according to claim 5, characterized in that, The puncture needle includes a curved section, and when the meniscus suture device is in the initial state, the first suture staple is located inside the curved section.

8. The meniscus suture device according to claim 1, characterized in that, During the initial movement of the inner core drive unit from the first position to the second position, the inner core is used to push the proximal end of the first suture staple to push the first suture staple out of the distal end of the puncture needle; During the process of the inner core drive unit moving from the first position to the second position again, the central tube is used to push the proximal end of the second suture staple to push the second suture staple out of the distal end of the puncture needle.

9. The meniscus suture device according to claim 1, characterized in that, The meniscus suture device includes a potential energy element connected to an inner core drive unit. The potential energy element is used to apply a potential force to the inner core drive unit in a direction toward the first position, so that the inner core drive unit is in the first position when not subjected to external force.

10. A meniscus suture system, characterized in that, The meniscus stapler includes any one of claims 1 to 9, and further includes a first staple and a second staple; wherein both the first staple and the second staple are tubular.

11. The meniscus suture system according to claim 10, characterized in that, The meniscus suture system also includes a suture having a head end and a tail end, a first suture pin being fixedly connected to the suture, and the tail end being movably passed through the second suture pin and the first suture pin in sequence to form a closed loop; when the tail end is pulled, the inner diameter of the loop decreases so that the first suture pin and the second suture pin move closer to each other.

12. The meniscus suture system according to claim 11, characterized in that, When the two ends of the suture are pulled, the first or second suture staple shrinks and deforms.

13. The meniscus suture system according to claim 10, characterized in that, The outer diameter of the tube of the first suture staple and / or the second suture staple is 0.55mm to 0.95mm, and the length is 10mm to 16mm.

Images