Tendon cross knitting stitching instrument

Abstract

The utility model provides a tendon cross knitting stitching instrument which comprises a clamping head, a sliding rod and a forceps handle, and the clamping head is used for fixing and clamping the broken end of a tendon and is also used for stitching; the sliding rod is used for enabling the clamping heads to be always in a parallel and aligned state in the clamping process, and stable contact of the clamping heads and reliable alignment of needle walking holes in the two sides are guaranteed. The clamp handles are provided with rebounding devices and lock catches, the rebounding devices are used for automatic rebounding after the clamp handles are pressed, and the lock catches are used for locking the clamping state. According to the utility model, an element with a guiding function and an element with a fixing and clamping function are separately designed, so that the device is not only suitable for clinically fixing, clamping and suturing tendons, but also suitable for fixing, clamping and suturing animal type large tendons, and is simple in structure, simple to operate and standard and efficient in suturing.

Description

Technical Field

[0001] The utility model belongs to the field of suture surgical instruments, and more particularly to a tendon cross-weaving suture device. Background Art

[0002] A tendon is a dense connective tissue composed of a parallel arrangement of collagen fibers, which serves as a bridge to connect muscles and bones. Tendon rupture is a common injury in the emergency department and orthopedics department, and most of them are open injuries. It is reported that there are nearly 470,000 cases of hand tendon injuries and about 250,000 cases of Achilles tendon rupture in China every year. Tendon injuries often force professional athletes to end their sports careers, seriously affecting people's normal life and also causing a huge economic and medical burden to society. When performing tendon suture surgery, first, the soft tissues around the wound are separated to expose the tendon stumps. Second, the redundant tissues at the stumps are trimmed, and professional instruments are used to fix the two tendon stumps. Finally, the suture operation is performed. However, the current suture methods for treating Achilles tendon injuries in clinical practice are mechanically insufficient, and postoperative long-term plaster fixation and limb immobilization are often required. The long-term plaster fixation and limb immobilization inevitably lead to adhesion healing of the tendon, seriously affecting the patient's later functional recovery. In addition, most of the suture instruments currently used in clinical practice are simple surgical auxiliary instruments, and the suture effect depends mostly on the operator's experience. For the same suture method, the suture effects vary greatly. The main deficiencies of the current clinical suture technology are non-standard suture and poor mechanics, which are difficult to meet the needs of the patient's early postoperative rehabilitation and the doctor's requirements for efficient and standard treatment of the ruptured Achilles tendon.

[0003] The two grippers of most tendon suture devices are connected by a rotating shaft. After the grippers clamp the tendon stumps, there is an angle between the two grippers and they are not aligned parallel. The grippers only have the function of clamping and fixing, so the needle passing holes are not directly set on the grippers. Instead, a cavity is sleeved outside the grippers, and centrally symmetric needle passing holes and / or symmetric needle passing holes are set on the cavity wall. This cavity accommodates the tendon stumps clamped and fixed by the grippers and performs suture needle passing. Such a setting results in a relatively complex structure of the tendon suture device and relatively inconvenient operation for suture needle passing. In addition, most tendon suture devices integrate the elements with guiding functions and the elements with fixing and clamping functions, which are suitable for clinical tendon suture, but not suitable for the fixing, clamping and suture of large animal tendons.

[0004] Therefore, there is an urgent need for a tendon cross-weaving suture device to solve the above problems. Summary of the Utility Model

[0005] The utility model provides a tendon cross-weaving suture device, which includes a clamping head, a sliding rod and a pair of pliers handles. The clamping head is used for both fixing and clamping the tendon stump and guiding the suture needle for stitching; the sliding rod is used to keep the clamping head in a parallel and aligned state during the clamping process, ensuring stable contact of the clamping head and reliable alignment of the needle guiding holes on both sides; the pliers handles are provided with a spring-back device and a lock. The spring-back device is used for automatic spring-back after the pliers handles are pressed, and the lock is used for locking the clamped state. In the utility model, components with guiding functions are designed separately from components with fixed clamping functions, which is not only applicable to the fixation, clamping and suture of tendons in clinical practice, but also applicable to the fixation, clamping and suture of large animal tendons. Moreover, the structure is simple, the operation is simple, and the suture is standardized and efficient.

[0006] A tendon cross-weaving suture device, characterized in that it includes a clamping head and a sliding rod. The clamping head is used for both fixing and clamping the tendon stump and guiding the suture needle for stitching; the sliding rod is used to keep the clamping head in a parallel and aligned state during the clamping process, ensuring stable contact of the clamping head and reliable alignment of the needle guiding holes on both sides.

[0007] When using this tendon cross-weaving suture device, hold the device by hand, gradually move the clamping head closer to one side of the tendon stump until it reaches the ideal position, then firmly hold the pliers handles. The sliding ends of the two sliding rods slide along the inner chute of the connecting rod towards the clamping head end, and the two sliding rods gradually move closer while remaining parallel and aligned, driving the two clamping heads to also gradually move closer while remaining parallel and aligned. During the approaching process, the needle guiding holes on the two clamping heads always remain in a parallel and aligned state until the cone thorns on the clamping heads penetrate into the tendon tissue, and one side of the tendon stump is clamped and fixed. Rotate the lock to select and lock to the most suitable serrated notch according to the clamping degree to maintain the clamped state, and then perform suture through the needle guiding holes. After the suture is completed, rotate the lock to release the clamped state, and the pliers handles automatically spring back. The two clamping heads gradually move away while remaining parallel and aligned, and their cone thorns gradually disengage from the tendon tissue; use the same method to clamp and fix the other side of the tendon stump and complete the suture, and finally tie and bundle the suture threads at both ends.

[0008] Further, the sliding rod includes a first sliding rod and a second sliding rod, the clamping head includes a first clamping head and a second clamping head, and the first clamping head and the second clamping head are symmetrically arranged.

[0009] Further, the first clamping head and the second clamping head are also provided with symmetric needle guiding holes.

[0010] In some ways, the needle passage holes on both sides of the first clamping head and the second clamping head are distributed on the wiring channels. There are multiple wiring channels, and one or more needle passage holes are provided on each wiring channel. The wiring channels on both sides of the first clamping head and the second clamping head are arranged in central symmetry. Generally, the suture needle relies on the needle passage holes on the wiring channels to pass through the tendon cross-section for suturing. Different suture methods need to be matched with different wiring channels and needle passage holes. Different suture methods include continuous loop suture method, continuous overedge suture method, Bunnel suture method, etc. For example, when using the continuous loop suture method and guiding the suture needle through the needle guide hole, the suture needle enters from the needle passage hole on one side and exits from the needle guide hole of the wiring channel on the opposite side, and these two steps are repeated continuously, so as to achieve the purpose of suturing the broken tendon. Generally, there are two broken tendons, and the suture needle is used to suture the broken parts of the two tendons to make the broken parts in a closed state, so that the muscles can be produced and connected together in the later stage. Most of the suture instruments used clinically are simple surgical auxiliary instruments, and the suture effect depends more on the experience of the operator. However, using the present utility model can standardize the suture, so that the suture technique no longer depends on the experience of the operator.

[0011] Further, it further includes a connecting rod. The connecting rod includes a first connecting rod and a second connecting rod. The first connecting rod and the second connecting rod are both provided with sliding grooves; the first sliding rod slides in the sliding groove of the second connecting rod, and the second sliding rod slides in the sliding groove of the first connecting rod; when the first sliding rod and the second sliding rod slide simultaneously towards the end close to the clamping head, the first connecting rod and the second connecting rod gradually move parallel and close to each other, and the first clamping head and the second clamping head gradually move parallel and abut against each other. Furthermore, the needle passage holes of the first clamping head and the second clamping head always remain in an aligned state.

[0012] In some ways, the two connecting rods are of equal length, the two sliding rods are of equal length. The sliding rod includes a sliding end and a fixed end. The sliding end slides in the sliding groove, and the fixed end is connected to the connecting rod. The fixed end of the first sliding rod is connected to the first connecting rod through a fixing pin, and the fixed end of the second sliding rod is connected to the second connecting rod through a fixing pin. The first sliding rod and the second sliding rod can rotate along with the fixing pin; the first connecting rod is connected to the first clamping head, and the second connecting rod is connected to the second clamping head. Therefore, when the connecting rod moves parallel, it will drive the corresponding connected clamping head to move parallel.

[0013] Further, the first sliding rod and the second sliding rod are cross-connected through a connecting pin, and a notch is provided at the cross-shaped connection.

[0014] In some ways, each of the first sliding rod and the second sliding rod is provided with a notch. The notch limits the rotation angle after the sliding rods cross and align, so that the sliding rods can clamp the tendon after rotating within the effective range.

[0015] Specifically, when the sliding ends of the first sliding rod and the second sliding rod slide along the sliding grooves of the second connecting rod and the first connecting rod respectively towards the clamping head end at the same time, the first sliding rod rotates clockwise with the connecting pin, and the second sliding rod rotates counterclockwise with the connecting pin. The first connecting rod and the second connecting rod gradually become parallel and approach each other. The first connecting rod and the second connecting rod drive the first clamping head, the second clamping head and their conical spikes to gradually become parallel and approach each other. During the approaching process, the needle-passing holes of the first clamping head and the second clamping head always remain parallel and aligned; conversely, when the sliding ends of the first sliding rod and the second sliding rod slide along the sliding grooves of the second connecting rod and the first connecting rod respectively towards the end away from the clamping head at the same time, the first sliding rod rotates counterclockwise with the connecting pin, and the second sliding rod rotates clockwise with the connecting pin. The first connecting rod and the second connecting rod gradually become parallel and move away from each other. The first connecting rod and the second connecting rod drive the first clamping head, the second clamping head and their conical spikes to gradually become parallel and move away from each other. During the moving-away process, the needle-passing holes of the first clamping head and the second clamping head still remain parallel and aligned.

[0016] In some ways, although there are various ways of needle-passing suture, the needle-passing routes of different suture methods are fixed. During the clamping process, the needle-passing holes on both sides always remain parallel and aligned, so that the tendon needle-passing suture process is not only standardized but also efficient and fast.

[0017] Further, it also includes a pair of pliers handles and a lock. The pair of pliers handles includes a first pliers handle and a second pliers handle. The lock is used to lock the clamping state and is connected to the first pliers handle through a rotating shaft.

[0018] In some ways, the first sliding rod is connected to the first pliers handle, and the second sliding rod is connected to the second pliers handle. That is to say, when the sliding rod slides in the sliding groove, and the first connecting rod and the second connecting rod become parallel and approach or move away from each other, and the first clamping head and the second clamping head become parallel and approach or move away from each other, the first pliers handle and the second pliers handle also gradually approach in a way of parallel alignment movement.

[0019] The connection between the sliding rod and the pliers handle is equivalent to extending the first sliding rod and the second sliding rod and setting the pliers handle, which actually extends the distance of the power arm. In fact, the present utility model is a lever. The cross-shaped connection of the first sliding rod and the second sliding rod is the fulcrum. Extending the sliding rod and setting the pliers handle actually extends the distance from the force application point to the fulcrum, that is, extends the power arm, and the perpendicular distance from the force application point to the fulcrum is much greater than the perpendicular distance from the resistance point to the fulcrum, that is, the power arm is greater than the resistance arm. It is labor-saving to use and is beneficial to the clamping and fixing of large animal tendons. Therefore, separating the design of the sliding rod with a guiding function from the clamping head and the connecting rod with a fixed clamping function like the present utility model is not only applicable to the fixation, clamping and suture of tendons in clinical practice, but also applicable to the fixation, clamping and suture of large animal tendons.

[0020] Further, the lock also includes a serrated opening, and the second pliers handle is also provided with a card for fixing the serrated opening.

[0021] In some ways, the card is an inclined plane and is arranged in the groove of the second pliers handle. When the clamping head is not in the clamping state, the lock can rotate through the rotating shaft to make the lock in the unlocked state; when the clamping head is in the clamping state, the lock rotates through the rotating shaft and can be selectively locked to the most suitable sawtooth notch according to the clamping degree. The sawtooth notches are designed with a unidirectional and consistent inclined structure and are evenly distributed, which are used for the unidirectional locking of the clamping head in the clamping state to achieve the effect of being unable to be loosened reversely.

[0022] Furthermore, elastic pieces are arranged on both the first pliers handle and the second pliers handle for automatic rebounding after the pliers handle is pressed; an inserting piece is arranged on the elastic piece of the first pliers handle, and a groove is arranged on the elastic piece of the second pliers handle, and the inserting piece is inserted into the groove.

[0023] In some ways, one end of the elastic piece of the first pliers handle is fixed to the inner side of the first pliers handle, and the other end is provided with an inserting piece, and an arc-shaped protrusion is further arranged at the front end of the inserting piece; one end of the elastic piece of the second pliers handle is fixed to the inner side of the second pliers handle, and the other end is provided with a groove; the inserting piece of one elastic piece is inserted into the groove of the other elastic piece. Due to the arc-shaped protrusion arranged at the front end of the inserting piece, the inserting piece can be stuck in the groove. In this way, when the first handle and the second handle are pressed forcefully, the two elastic pieces will receive forces in the opposite direction of the pressing force. Therefore, when one handle and the second handle are released, the handles will automatically rebound under the elastic force of the two elastic pieces.

[0024] Furthermore, symmetrically and evenly distributed conical thorns are arranged on the inner sides of the first clamping head and the second clamping head, and the tips of the conical thorns are circular cross-sections, and the cross-section is perpendicular to the central axis of the conical thorns.

[0025] In some ways, when suturing the two broken ends of a tendon, the tendon is prone to retraction, resulting in difficulties in the suturing process. Moreover, there are important blood vessels and nerves near the tendon. If the position of the clamped tendon broken end is incorrect, it may damage the blood vessels and nerves, causing secondary harm to the patient. Through the design of the clamping head and the symmetrically and evenly distributed conical thorns on its inner side, the smooth surface of the tendon suture broken end can be quickly and accurately clamped, and further stable and reliable pulling of the tendon can be realized.

[0026] Furthermore, an uneven curved surface is also arranged on the surface of the pliers handle for anti-slip.

[0027] Therefore, the present utility model designs an available instrument that can standardize the suture method, is easy to operate, and can efficiently suture tendons. The device has strong suture mechanics and can meet the early rehabilitation needs of patients, solving the problems of tendon re-rupture and adhesion caused by long-term immobilization. The guiding suture of the device can standardize the suture, making the suture effect independent of the operator's experience, and enabling the operator to efficiently and standardly suture the ruptured tendon during the operation. The utility model has greatly promoted the progress of clinical tendon suture technology, improved the treatment efficiency of doctors for ruptured tendons and patient satisfaction, and meets the development needs of social large health. It is a tendon suture device with unique functions.

[0028] The present utility model has the following beneficial effects:

[0029] (1) The clamping head is provided with taper spikes and needle holes, which are used for both fixing and clamping the tendon stump and for needle threading and suturing;

[0030] (2) The sliding rod slides in the connecting rod chute, which is used to keep the clamping head always in a parallel and aligned state during the clamping process, ensuring the stable contact of the clamping head and the reliable alignment of the needle holes on both sides;

[0031] (3) The pliers handle is provided with a spring-back device and a lock. The spring-back device is used for automatic spring-back after the pliers handle is pressed, and the lock is used for locking the clamping state;

[0032] (4) The sliding rod with a guiding function and the clamping head and connecting rod with a fixed clamping function are separately designed, which is not only applicable to the fixation, clamping and suture of tendons in clinical practice, but also applicable to the fixation, clamping and suture of large animal tendons. Moreover, the structure is simple, the operation is simple, and the suture is efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is the overall structural schematic diagram of the tendon cross-weaving suture device in Embodiment 1;

[0034] Figure 2 is the schematic diagram of the clamping head of the tendon cross-weaving suture device in Embodiment 1 Figure 1 ;

[0035] Figure 3 is the schematic diagram of the clamping head of the tendon cross-weaving suture device in Embodiment 1 Figure 2 ;

[0036] Figure 4 is the schematic diagram of the clamping head of the tendon cross-weaving suture device in Embodiment 1 Figure 3 ;

[0037] Figure 5 is the schematic diagram of the clamping head of the tendon cross-weaving suture device in Embodiment 1 Figure 4 ;

[0038] Figure 6The first suture needle running route of the tendon cross-weaving suture device in Embodiment 1;

[0039] Figure 7 The second suture needle running route of the tendon cross-weaving suture device in Embodiment 1;

[0040] Figure 8 Schematic diagram of the connecting rod and sliding rod structure of the tendon cross-weaving suture device in Embodiment 1 Figure 1 ;

[0041] Figure 9 Schematic diagram of the connecting rod and sliding rod structure of the tendon cross-weaving suture device in Embodiment 1 Figure 2 ;

[0042] Figure 10 Schematic diagram of the connecting rod and sliding rod structure of the tendon cross-weaving suture device in Embodiment 1 Figure 3 ;

[0043] Figure 11 Schematic diagram of the forceps handle structure of the tendon cross-weaving suture device in Embodiment 1;

[0044] Figure 12 Schematic diagram of the buckle structure of the tendon cross-weaving suture device in Embodiment 1 Figure 1 ;

[0045] Figure 13 Schematic diagram of the buckle structure of the tendon cross-weaving suture device in Embodiment 1 Figure 2 ;

[0046] Figure 14 Schematic diagram of the card and groove structure of the tendon cross-weaving suture device in Embodiment 1;

[0047] Figure 15 Schematic diagram of the elastic piece structure of the tendon cross-weaving suture device in Embodiment 1 Figure 1 ;

[0048] Figure 16 Schematic diagram of the elastic piece structure of the tendon cross-weaving suture device in Embodiment 1 Figure 2 ;

[0049] Figure 17 Schematic diagram of the elastic piece structure of the tendon cross-weaving suture device in Embodiment 1 Figure 3 ;

[0050] Figure 18 Schematic diagram of the elastic piece structure of the tendon cross-weaving suture device in Embodiment 1 Figure 4 . Detailed implementation manners

[0051] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the following embodiments are intended to facilitate the understanding of the present utility model and do not impose any limitations on it.

[0052] Example 1, Tendon Cross - Weaving Suture Device

[0053] As Figure 1 shown, a tendon cross - weaving suture device includes a clamping head 1, a connecting rod 2, and a sliding rod 3. The clamping head 1 is used to both fix and clamp the tendon stump and for needle - passing suture. The connecting rod 2 and the sliding rod 3 are used to keep the clamping head in a parallel and aligned state during the clamping process, ensuring stable contact of the clamping head and reliable alignment of the needle - passing holes on both sides.

[0054] As Figures 2 to 5 shown, the clamping head 1 includes a first clamping head 4 and a second clamping head 5, which are symmetrically arranged. On the inner sides of the first clamping head 4 and the second clamping head 5, symmetrically and evenly distributed taper thorns 6 are provided. The tip 7 of the taper thorn 6 is a circular section, and the section is perpendicular to the center line of the taper thorn. When suturing the two stumps of the tendon, the tendon is prone to retraction, resulting in difficulties in the suturing process. Moreover, there are important blood vessels and nerves near the tendon. If the position of the clamped tendon stump is incorrect, it may damage the blood vessels and nerves, causing secondary harm to the patient. Through the design of the symmetrically and evenly distributed taper thorns 6 on the inner sides of the first clamping head 4 and the second clamping head 5, the smooth - surfaced tendon suture stump can be quickly and accurately clamped, further realizing stable and reliable pulling of the tendon. The first clamping head 4 is provided with a first needle - passing hole 8, and the second clamping head 5 is provided with a second needle - passing hole 9. The first needle - passing hole 8 is arranged on a first wiring channel 10, and the second needle - passing hole 9 is arranged on a second wiring channel 11. A plurality of first wiring channels 10 and second wiring channels 11 are arranged in parallel, and the number of needle - passing holes on each wiring channel is two or more. The first wiring channel 10 and the second wiring channel 11 are centrosymmetrically arranged. The clamping head 1 can make the clamping of the tendon more convenient and flexible, providing key technical means for the fixation, clamping, and suturing of tendon ruptures at different parts in clinical applications.

[0055] As Figures 4 to 7 shown, each needle - passing hole of each wiring channel of the first wiring channel 10 and the second wiring channel 11 has a corresponding number. Taking the circular suture method as an example in this embodiment, both ends of the suture line used are provided with suture needles, including a first suture needle 39 and a second suture needle 40. The first suture needle enters from A0, passes through the tendon cross - section and comes out from the other side B0 (the solid line represents the needle - passing route of the suture line on the same side, and this suture line is visible on the surface. The dotted line represents the needle - passing route of the suture line through the tendon cross - section, and this suture line is not visible), then enters from B1, passes through the tendon cross - section and comes out from the other side B2. Further, it enters from C2 and comes out from C1, enters from A3 and comes out from A4, enters from C4 and comes out from C3, enters from B5 and comes out from B6, enters from C6 and comes out from C5, enters from A7 and comes out from A8. At this time, the first suture needle 32 returns to the same side as the starting position ( Figure 6); The second suture needle 33 enters from A1, exits from A2, enters from C1, exits from C2, enters from B3, exits from B4, enters from C3, exits from C4, enters from A5, exits from A6, enters from C5, exits from C6, enters from B7, exits from B8 Figure 7 ) After all the threading of the first suture needle 39 and the second suture needle 40 is completed, the first suture needle 39 and the second suture needle 40 are respectively located on both sides of the tendon rupture end. Use the same threading method to operate on the other end of the tendon rupture, and finally ligate and tie the two ends of the thread.

[0056] As Figures 8 to 10 shown, the connecting rod 2 includes a first connecting rod 12 and a second connecting rod 13. A chute 14 is provided inside the first connecting rod 12, and a chute 15 is provided inside the second connecting rod 13; the sliding rod 3 includes a first sliding rod 16 and a second sliding rod 17; the sliding end 18 of the first sliding rod 16 slides in the chute 15 of the second connecting rod 13, and the sliding end 19 of the second sliding rod 17 slides in the chute 14 of the first connecting rod 12. The other end of the first sliding rod 16 is connected to the first connecting rod 12 through a fixing pin 20, and the other end of the second sliding rod 17 is connected to the second connecting rod 13 through a fixing pin 21. The first sliding rod 16 and the second sliding rod 17 can rotate along with the fixing pins 20 and 21; the first connecting rod 12 is connected to the first clamping head 4, and the second connecting rod 13 is connected to the second clamping head 5; the first sliding rod 16 and the second sliding rod 17 are cross-connected through a connecting pin 23. The first sliding rod 16 is provided with a notch 24, and the second sliding rod 17 is provided with a notch 25. The notches 24 and 25 limit the alignment and rotation angle after the first sliding rod 16 and the second sliding rod 17 cross, so that the first sliding rod 16 and the second sliding rod 17 can clamp the tendon after rotating within the effective range; the first connecting rod 12 is connected to the first clamping head 4, and the second connecting rod 13 is connected to the second clamping head 5. Specifically, the operation process of the sliding rod and the connecting rod is as follows: when the sliding end 18 of the first sliding rod 16 slides along the chute 15 of the second connecting rod 13 towards the clamping head 1, and the sliding end 19 of the second sliding rod 17 slides along the chute 14 of the first connecting rod 12 towards the clamping head 1, the first sliding rod 16 rotates clockwise along with the connecting pin 23, and the second sliding rod 17 rotates counterclockwise along with the connecting pin 23. The first connecting rod 12 and the second connecting rod 13 gradually become parallel and approach each other. The first connecting rod 12 and the second connecting rod 13 drive the first clamping head 4, the second clamping head 5 and the conical spike 6 to gradually become parallel and approach each other. During the parallel approach process, the first needle hole 8 and the second needle hole 9 always remain parallel and aligned. Only when the needle holes on both sides always remain parallel and aligned can the tendon needle threading and suturing process be not only standardized but also efficient and fast.

[0057] As Figures 11 to 14As shown in the figure, the sliding rod 3 further includes pliers handles. The first sliding rod 16 is connected to the first pliers handle 26, and the second sliding rod 17 is connected to the second pliers handle 27. Therefore, when the sliding rod slides in the chute, the first connecting rod 12 and the second connecting rod 13 are parallel and aligned to approach or move away from each other. When driving the first clamping head 4 and the second clamping head 5 to be parallel and aligned to approach or move away from each other, the first pliers handle 26 and the second pliers handle 27 also gradually approach each other in a manner of parallel alignment and movement. The connection between the sliding rod and the pliers handle is equivalent to extending the first sliding rod and the second sliding rod and setting pliers handles, actually extending the distance of the power arm. In fact, the present utility model is a lever, with the cross-shaped connection of the first sliding rod and the second sliding rod as the fulcrum. Extending the sliding rod and setting pliers handles actually extends the distance from the force application point to the fulcrum, that is, extends the power arm, and the perpendicular distance from the force application point to the fulcrum is much greater than the perpendicular distance from the resistance point to the fulcrum, that is, the power arm is greater than the resistance arm, making it labor-saving to use and beneficial for the clamping and fixing of large animal tendons. Therefore, separating the design of the sliding rod with a guiding function from the clamping head and the connecting rod with a fixed clamping function like this is not only applicable to the fixing, clamping and suturing of tendons in clinical practice, but also applicable to the fixing, clamping and suturing of large animal tendons. The first pliers handle 26 is connected to the lock 29 through a rotating shaft 28. The lock 29 is used to lock the clamping state. The lock 29 is provided with a serrated opening 32. The serrated opening 32 is a unidirectional and uniformly inclined structural design, used for the one-way locking of the clamping head in the clamping state, achieving the effect of non-reversible loosening; the second pliers handle 27 is provided with a groove 30, and a card 31 is arranged in the groove 30. The card 31 is an inclined plane, used to fix the serrated opening 32. When the clamping head 1 is not in the clamping state, the lock 29 can rotate through the rotating shaft 28 to make the lock 29 in the unlocked state; when the clamping head 1 is in the clamping state, the lock 29 rotates through the rotating shaft 28 and can be locked to the most suitable serrated opening 32 according to the degree of clamping. The surfaces of the first pliers handle 26 and the second pliers handle 27 are also provided with uneven curved surfaces 38 for anti-slip.

[0058] As Figures 15 to 18 shown in the figure, the first pliers handle 26 is provided with a spring piece 33, and the second pliers handle 27 is provided with a spring piece 34, used to achieve automatic rebound after the pliers handle is pressed; one end of the spring piece 33 is fixed to the inner side of the first pliers handle 26, and the other end is provided with an inserting piece 35. The front end of the inserting piece 35 is also provided with an arc-shaped protrusion 36; one end of the spring piece 34 is fixed to the inner side of the second pliers handle 27, and the other end is provided with a groove 37; the inserting piece 35 is inserted into the groove 37, and through the arc-shaped protrusion 36, the inserting piece 35 can be stuck in the groove 37. In this way, when pressing the first handle 26 and the second handle 27 with force, the spring pieces 33 and 34 will be subjected to forces in the opposite direction of the pressing force. Therefore, when releasing the first handle 26 and the second handle 27, the first handle 26 and the second handle 27 will automatically rebound under the elastic force of the spring pieces 33 and 34.

[0059] Generally speaking, when using this tendon cross-weaving suture device, hold the device by hand, gradually move the clamping head closer to one side of the tendon stump, move it to the ideal position, grip the forceps handle tightly, and the sliding ends of the two sliding rods slide along the chute inside the connecting rod towards the clamping head end. The two sliding rods gradually move closer and align parallel to each other, driving the two clamping heads to also gradually move closer and align parallel to each other. During the approaching process, the needle holes on the two clamping heads always maintain a parallel alignment state until the conical spines on the clamping heads are inserted into the tendon tissue, and one side of the tendon stump is clamped and fixed. The rotary lock is rotated to select and lock to the most suitable serrated notch according to the clamping degree to maintain the clamping state. Needle suture is carried out through the needle holes. After the suture is completed, the rotary lock releases the clamping state, and the forceps handle automatically rebounds. The two clamping heads gradually move away parallel to each other, and their conical spines gradually disengage from the tendon tissue. Use the same method to clamp and fix the other side of the tendon stump and complete the needle suture. Finally, tie and bind the suture threads at both ends.

[0060] Therefore, the present utility model designs a usable instrument that can standardize the suture method, is simple to operate, and can efficiently suture tendons. The suture mechanics of this device is strong and can meet the early rehabilitation needs of patients, solving the problems of tendon re-rupture and adhesion caused by long-term immobilization. The guiding suture of the device can standardize the suture, making the suture effect independent of the operator's experience, and enabling the operator to efficiently and standardly suture the ruptured tendon during the operation. This utility model has greatly promoted the progress of clinical tendon suture technology, improved the treatment efficiency of doctors for ruptured tendons and patient satisfaction, and meets the development needs of social large health. It is a tendon suture device with unique functions.

[0061] Although the present utility model is disclosed as above, the present utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the scope defined by the claims.

Claims

1. A tendon cross-weaving suture device, characterized in that It includes a clamping head, a sliding rod and a connecting rod. The clamping head is used for both fixing and clamping the tendon stump and for needle threading and suturing. The sliding rod and the connecting rod are used to keep the clamping head in a parallel and aligned state during the clamping process, ensuring stable contact of the clamping head and reliable alignment of the needle threading holes on both sides.

2. The tendon cross-weaving suture device according to claim 1, wherein The sliding rod includes a first sliding rod and a second sliding rod. The clamping head includes a first clamping head and a second clamping head, and the first clamping head and the second clamping head are symmetrically arranged.

3. The tendon cross-weaving suture device according to claim 2, characterized in that, The first clamping head and the second clamping head are also provided with symmetric needle threading holes.

4. The tendon cross-weaving suture device according to claim 3, characterized in that, The connecting rod includes a first connecting rod and a second connecting rod. Both the first connecting rod and the second connecting rod are provided with sliding grooves. The first sliding rod slides in the sliding groove of the second connecting rod, and the second sliding rod slides in the sliding groove of the first connecting rod. When the first sliding rod and the second sliding rod slide simultaneously towards the end close to the clamping head, the first connecting rod and the second connecting rod gradually become parallel and aligned and approach each other, and the first clamping head and the second clamping head gradually become parallel and aligned and abut against each other. Furthermore, the needle threading holes of the first clamping head and the second clamping head always remain in an aligned state.

5. The tendon cross-weaving suture device according to claim 4, wherein, The first sliding rod and the second sliding rod are cross-connected by a connecting pin, and a notch is provided at the cross-connection.

6. The tendon cross-weaving suture device according to claim 5, characterized in that, It also includes a pair of pliers handles and a lock. The pliers handles include a first pliers handle and a second pliers handle. The lock is used to lock the clamping state and is connected to the first pliers handle through a rotating shaft.

7. The tendon cross-weaving suture device according to claim 6, wherein Both the first pliers handle and the second pliers handle are provided with elastic pieces for automatic rebound after the pliers handle is pressed. The elastic piece of the first pliers handle is provided with an inserting piece, and the elastic piece of the second pliers handle is provided with a groove, and the inserting piece is inserted into the groove.

8. The tendon cross-weaving suture device according to claim 7, characterized in that, The lock also includes a serrated opening, and the second pliers handle is also provided with a card for fixing the serrated opening.

9. The tendon cross-weaving suture device according to claim 8, wherein, On the inner sides of the first clamping head and the second clamping head, symmetrically and evenly distributed conical thorns are provided. The tip of the conical thorn is a circular section, and the section is perpendicular to the center line of the conical thorn.

10. The tendon cross-weaving suture device according to claim 9, wherein, The surface of the pliers handle is also provided with an uneven curved surface for anti-slip.

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