An electric dura continuous suture device

Abstract

The utility model provides an electric dura mater continuous suture device, which comprises a driving shell, a needle feeding device, a thread hooking device and a clamping push plate are arranged on the side of the driving shell, a driving motor and a storage battery are arranged in the driving shell, a driving end of the driving motor is fixedly installed with a driving gear, the inside of the needle feeding device is provided with a first transmission rod, one end of the first transmission rod is engaged with the driving gear through a first driven gear, the other end of the first transmission rod is connected with a connecting rod, the connecting rod is connected with the upper end of a suture needle, a limiting post is movably connected in a guide groove on the surface of the suture needle, the inside of the thread hooking device is provided with a second transmission rod, the second transmission rod is engaged with the driving gear through a second driven gear, the second transmission rod is connected with a thread hooking hook through a connecting rod mechanism, and the thread hooking device is respectively installed with the thread hooking hook and a pushing device. The utility model overcomes the defects of the prior art, realizes the automation and convenience of dura mater suturing in neurosurgery, shortens the operation time and reduces the operation requirements of the operator.

Description

Technical Field

[0001] This invention relates to consumer goods, and more particularly to medical devices, specifically to an electric continuous dura mater suture device. Background Technology

[0002] The dura mater is a tough, membranous structure covering the outermost layer of brain tissue, providing fundamental mechanical protection. Its integrity prevents cerebrospinal fluid leakage and reduces the risk of intracranial infections, epilepsy, and other complications. For neurosurgery, dural incision is essential for accessing the brain; therefore, meticulous suturing and repair of the dura mater at the end of surgery is crucial to prevent postoperative complications such as cerebrospinal fluid leakage, subcutaneous effusion, intracranial infection, and epilepsy. Currently, dural suturing is performed manually using needles and sutures.

[0003] Currently, there is a type of sutureless dura mater available on the market that directly covers the dural defect area, achieving a similar effect to dural repair. However, compared to sutures, the adhesive connection of sutureless dura mater is less effective, resulting in poor postoperative dural connection, increased cerebrospinal fluid leakage, and a higher rate of related complications. Furthermore, since sutureless dura mater relies on the long-term absorption and degradation of the autologous dura mater for repair, it is also more prone to dural calcification. Therefore, the use of sutureless dura mater remains uncertain in its effectiveness; while it saves time and effort, its poor dural repair results limit its widespread clinical application.

[0004] Therefore, under current technological conditions, suture suturing of the dura mater remains the preferred and most widely used method of meningeal repair. Because dura mater suturing requires the use of fine needles and sutures, and necessitates a relatively dense arrangement of stitches, it often takes a considerable amount of time, especially for dura mater suturing procedures performed under minimally invasive neurosurgical techniques.

[0005] Among the published patents, there are manual suturing devices for dura mater suturing, such as a continuous dura mater suturing device with application number CN202110386904.2. This device includes a suture head, which comprises a needle insertion device, a clamping device, and a suture hooking device. The clamping device is composed of a clamping plate. It also includes an operator, which includes a needle insertion switch and a clamping switch. A connecting cylinder is provided between the suture head and the operator. A second handle is connected to the suture hooking device via a first transmission mechanism, and one end of the clamping switch is connected to the clamping device via a second transmission mechanism. However, all of the above suturing devices require manual operation by clinicians; there are no electrically powered continuous suturing devices. Therefore, the operation time is long, and the skill requirements for the surgeon are high. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an electric continuous dura mater suture device that overcomes the deficiencies of existing technologies. It is rationally designed and automates and facilitates dura mater suturing in neurosurgery, shortens surgical time, and reduces the operational requirements for surgeons.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An electric continuous dura mater suture device includes a drive housing, a needle insertion device and a suture hooking device are fixedly connected to the side of the drive housing, a clamping push plate is provided between the needle insertion device and the suture hooking device, an adjustment groove is provided on the side of the drive housing, the clamping push plate passes through the adjustment groove and is fixedly connected to an adjustment block, a strip groove is provided on the front surface of the drive housing, and the adjustment block passes through the strip groove and moves axially along the strip groove.

[0009] A drive motor and a battery are fixedly installed inside the drive housing. The output terminal of the battery is connected to the input terminal of the drive motor through a control switch. The control switch is located on the outer surface of the drive housing. A drive gear is fixedly installed on the drive end of the drive motor.

[0010] The needle insertion device is internally rotatably connected to a first transmission rod. One end of the first transmission rod is fixedly connected to a first driven gear, which meshes with a driving gear. The other end of the first transmission rod is connected to one end of a connecting rod via a rotating shaft. The rotating shaft is located off-center from the axis of the first transmission rod. The other end of the connecting rod is connected to the upper end of the suture needle via the rotating shaft. A limiting post is provided on the surface of the suture needle. A guide groove is provided on the inner wall of the needle insertion device, and the limiting post is movably connected in the guide groove.

[0011] The hooking device is internally connected to a second transmission rod, one end of which is fixedly connected to a second driven gear that meshes with a driving gear. The other end of the second transmission rod is connected to one end of a linkage mechanism via a rotating shaft. The hooking device contains a hook and a pushing device, which are fixedly connected to the hook via a connecting rod. The other end of the linkage mechanism is connected to the hook via a rotating shaft. The rotating shafts are respectively installed on the end face of the second transmission rod off-center and on the surface of the hook off-center. The hook is rotatably connected to the inner wall of the hooking device via a rotating shaft.

[0012] Preferably, a spring is fixedly connected between the clamping push plate and the needle insertion device, and the spring is located inside the drive housing.

[0013] Preferably, an indicator light is fixedly mounted on the surface of the drive housing, and the indicator light is electrically connected to the battery via a control switch.

[0014] This invention provides an electric continuous dura mater suture device. It has the following advantages: By controlling the operation of the drive motor, the engagement of the driving gear with the first driven gear and the second driven gear drives the first and second transmission rods to rotate. The connecting rod at the end of the first transmission rod then drives the suture needle to move up and down, completing continuous needle insertion. Furthermore, the connecting rod mechanism at the other end of the second transmission rod drives the suture hook to rotate, allowing it to hook the thread after needle insertion and form a continuous suture with the next stitch. Therefore, it can quickly, continuously, and conveniently achieve the surgical goal of tight dura mater suturing, greatly reducing the operation time and lowering the requirements for surgical operation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this invention or the prior art, the accompanying drawings used in the description of the prior art will be briefly introduced below.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the connection between the drive motor and the first and second transmission rods in this invention;

[0018] Figure 3 This is a schematic diagram of the needle-feeding device, the thread-hooking device, and the pushing device in this invention;

[0019] Explanation of the labels in the diagram:

[0020] 1. Drive housing; 2. Needle insertion device; 3. Thread hooking device; 4. Clamping push plate; 5. Adjusting block; 6. Strip groove; 7. Drive motor; 8. Battery; 9. Control switch; 10. Drive gear; 11. First transmission rod; 12. First driven gear; 13. Connecting rod; 14. Sewing needle; 15. Limiting post; 16. Second transmission rod; 17. Second driven gear; 18. Thread hook; 19. Pushing device; 20. Indicator light; 21. Linkage mechanism. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0022] Example 1, as Figure 1-3As shown, an electric continuous dura mater suture device includes a drive housing 1. A needle insertion device 2 and a suture hooking device 3 are fixedly connected to the side of the drive housing 1. A clamping push plate 4 is provided between the needle insertion device 2 and the suture hooking device 3. An adjustment groove is provided on the side of the drive housing 1. The clamping push plate 4 passes through the adjustment groove and is fixedly connected to an adjustment block 5. A strip groove 6 is provided on the front surface of the drive housing 1. The adjustment block 5 passes through the strip groove 6 and moves up and down along the strip groove 6.

[0023] A drive motor 7 and a battery 8 are fixedly installed inside the drive housing 1. The output end of the battery 8 is connected to the input end of the drive motor 7 through a control switch 9. The control switch 9 is located on the outer surface of the drive housing 1. A drive gear 10 is fixedly installed on the drive end of the drive motor 7.

[0024] The needle insertion device 2 is internally connected to a first transmission rod 11 via a bearing. One end of the first transmission rod 11 is fixedly connected to a first driven gear 12, which meshes with the driving gear 10. The other end of the first transmission rod 11 is connected to one end of a connecting rod 13 via a rotating shaft. The rotating shaft is located at a position off-center from the axis of the first transmission rod 11. The other end of the connecting rod 13 is connected to the upper end of a suture needle 14 via a rotating shaft. A limiting post 15 is provided on the surface of the suture needle 14. A guide groove is provided on the inner wall of the needle insertion device 2. The limiting post 15 is movably connected in the guide groove, which limits the suture needle 14 to move in a straight line up and down.

[0025] The hooking device 3 has a second transmission rod 16 rotatably connected to it via a bearing. One end of the second transmission rod 16 is fixedly connected to a second driven gear 17, which meshes with the driving gear 10. The other end of the second transmission rod 16 is connected to one end of a linkage mechanism 21 via a rotating shaft. The hooking device 3 contains a hook 18 and a pushing device 19. The other end of the linkage mechanism 21 is connected to the hook 18 via a rotating shaft. The two rotating shafts are respectively installed at positions off-center on the end face of the second transmission rod 16 and off-center on the surface of the hook 18. Specifically, in this embodiment, the linkage mechanism 21 includes a first link and a second link. The first and second connecting rods are connected end-to-end via a pivot to form a V-shaped linkage transmission mechanism. The ends of the first and second connecting rods, which are far apart from each other, are respectively connected to the second transmission rod 16 and the hook 18 via pivots. The hook 18 is rotatably connected to the inner wall of the hooking device 3 via a pivot. When the second transmission rod 16 rotates, the linkage mechanism 21 formed by the first and second connecting rods can drive the hook 18 to swing around the pivot in a certain arc. The lower surface of the pushing device 19 is fixedly connected to the outer surface of the hook 18 via a connecting rod. Therefore, when the hook 18 swings around the pivot, it can also drive the pushing device 19 to swing. The hooking action principle of the hook 18 and the pushing action principle of the pushing device 19 both adopt known solutions in the prior art, specifically the same technical solution described in application number CN202110386904.2; patent title: A Continuous Dura mater Suturing Device. Those skilled in the art are already familiar with this, and it will not be elaborated further here.

[0026] Working principle:

[0027] By controlling the operation of the drive motor 7, the active gear 10 meshes with the first driven gear 12 and the second driven gear 17, thereby driving the first transmission rod 11 and the second transmission rod 16 to rotate. Through the transmission action of the connecting rod 13 at the end of the first transmission rod 11, the suture needle 14 can move up and down to complete continuous needle insertion. Additionally, the connecting rod mechanism 21 at the other end of the second transmission rod 16 drives the hook 18 to rotate, allowing it to hook the thread after needle insertion and form a continuous suture with the next stitch. Simultaneously, the pushing device 19 pushes the clamped meninges 15 one stitch length after needle withdrawal. In this embodiment, the hooking action principle of the hook 18 and the pushing action principle of the pushing device 19 both adopt known solutions in the prior art, specifically the same technical solution described in application number CN202110386904.2; patent title: A Continuous Suturing Device for Dura Mastriae. Those skilled in the art will understand this, and it will not be described again here.

[0028] In use, the sutures required for suturing are first inserted into the eye of the suture needle 14. Then, the two meninges to be sutured are lifted, and the adjusting block 5 is pushed so that the two meninges are positioned between the clamping push plate 4 and the hook device 3. The clamping action of the clamping push plate 4 can then hold the two meninges in place. After the meninges to be sutured are fixed, the control switch 9 is pressed to start the drive motor 7. The drive motor 7 drives the drive gear 10 to rotate, which in turn drives the first transmission rod 11 and the second transmission rod 16 to rotate. When the first transmission rod 11 rotates, it can drive the suture needle 14 to move up and down in a straight line through the transmission action of the connecting rod 13, causing the suture thread passing through the suture needle 14 to pierce through the meninges. At the same time, the rotation of the second transmission rod 16 is transmitted to the hook 18 and the pushing device 19 through the connecting rod mechanism 21 to make them swing once in one suturing cycle.

[0029] Within one suturing cycle, the suturing device completes one suture. The specific process is as follows: The suture needle 14 first moves downwards with the suture thread, piercing through the meninges. Then, the hook 18 rotates to the left to catch the suture thread. Next, the suture needle 14 moves upwards, but the suture thread is caught by the needle, thus forming a loop below the meninges to be sutured. Simultaneously, the lower pushing device 19 moves to the right, pushing the meninges forward. At this point, the loop is still caught by the hook 18, but the previous puncture site has been pushed to the right by one stitch length. At the start of the next suturing cycle, the suture needle 14 moves downwards again, this time passing through the meninges and the loop formed by the previous suture, forming a new loop. The loops formed in the two suturing cycles are locked together, forming a continuous suture. After suturing, two suture ends are left at the beginning and end for tying to form a secure suture.

[0030] The suture device 3 in this invention draws inspiration from the principles of existing handheld sewing machines and applies them to dural suturing, providing a suture structure for continuously suturing two layers of the dura mater. However, this type of sewing machine suture structure is miniaturized into a small suture head. The drive motor 7 that drives the suture head and its transmission structure are original structures suitable for surgical operations. Its greatest advantage is that it can electrically drive the suture head, saving manual operation. The biggest difference from other patents related to dural suturing is that the suture head in this patent has continuous suturing capability. Combined with motor activation, it can quickly and continuously complete a tight suture of the dura mater.

[0031] In Example 2, as a further preferred embodiment of Example 1, a spring is fixedly connected between the clamping push plate 4 and the needle insertion device 2, and the spring is located inside the drive housing 1. Therefore, when clamping the two meninges, the adjusting block 5 can be pushed first to compress the spring, separating the clamping push plate 4 from the hook device 3. Then, the two meninges are positioned between the clamping push plate 4 and the hook device 3. The adjusting block 5 is then released, allowing the spring's elasticity to clamp the clamping push plate 4 and the hook device 3 together, thus clamping the two meninges.

[0032] In Example 3, as a further preferred embodiment of Example 1, an indicator light 20 is fixedly mounted on the surface of the drive housing 1. The indicator light 20 is electrically connected to the battery 8 via a control switch 9. When the drive motor 7 starts, the indicator light 20 illuminates, thereby alerting the operator.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electric continuous dura mater suture device, characterized in that: The device includes a drive housing (1), on which a needle insertion device (2) and a hooking device (3) are fixedly connected. A clamping push plate (4) is provided between the needle insertion device (2) and the hooking device (3). An adjustment groove is provided on the side of the drive housing (1). The clamping push plate (4) passes through the adjustment groove and is fixedly connected to an adjustment block (5). A strip groove (6) is provided on the front surface of the drive housing (1). The adjustment block (5) passes through the strip groove (6) and moves axially along the strip groove (6). A drive motor (7) and a battery (8) are fixedly installed inside the drive housing (1). The output end of the battery (8) is connected to the input end of the drive motor (7) via a control switch (9). The control switch (9) is located on the outer surface of the drive housing (1). A drive gear (10) is fixedly installed on the drive end of the drive motor (7). A first transmission rod (11) is rotatably connected inside the needle insertion device (2). A first driven gear (12) is fixedly connected to one end of the first transmission rod (11). A driven gear (12) meshes with a driving gear (10). The end face of the other end of the first transmission rod (11) is connected to one end of a connecting rod (13) via a rotating shaft. The rotating shaft is located at a position off-center from the axis of the end face of the first transmission rod (11). The other end of the connecting rod (13) is connected to the upper end of a suture needle (14) via a rotating shaft. A limiting post (15) is provided on the surface of the suture needle (14). A guide groove is provided on the inner wall of the needle insertion device (2). The limiting post (15) is movably connected in the guide groove. The hooking device (3) is rotatably connected to a second transmission rod (16). One end of the second transmission rod (16) is fixedly connected to a second driven gear (17), which meshes with the driving gear (10). The other end of the second transmission rod (16) is connected to one end of a linkage mechanism (21) via a rotating shaft. The hooking device (3) is equipped with a hook (18) and a pushing device (19). The pushing device (19) is fixedly connected to the hook (18) via a connecting rod. The other end of the linkage mechanism (21) is connected to the hook (18) via a rotating shaft. The rotating shafts are respectively installed at positions off-axis on the end face of the second transmission rod (16) and off-axis on the surface of the hook (18). The hook (18) is rotatably connected to the inner wall of the hooking device (3) via a rotating shaft.

2. The electric continuous dura mater suture device according to claim 1, characterized in that: A spring is fixedly connected between the clamping push plate (4) and the needle insertion device (2), and the spring is located inside the drive housing (1).

3. The electric continuous dura mater suture device according to claim 1, characterized in that: An indicator light (20) is fixedly installed on the surface of the drive housing (1), and the indicator light (20) is electrically connected to the battery (8) through a control switch (9).

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