An intracranial deep tissue suturing and ligating instrument

Abstract

The application discloses a deep intracranial tissue suturing and ligature instrument, which can realize suturing and ligature of deep human tissues (especially intracranial surgery). The instrument can realize suturing and ligature of deep tissues in minimally invasive treatment in clinical surgery, and can solve the problems of small operation space, difficult suturing and easy damage to surrounding tissues in traditional surgery. The operation includes two parts of suturing and steering, and the suturing operation is completed by two interchangeable needle holding levers. A universal joint device held by the rear lever can be adjusted in direction according to different requirements, and is used for coping with various complex situations.

Description

Technical Field

[0001] This invention belongs to the field of medical devices, specifically relating to a device that can perform suturing and ligation operations in deep intracranial tissues. Background Technology

[0002] In intracranial surgery, especially during transnasal resection of sellar region tumors, suturing is sometimes necessary. However, intracranial surgery demands precision, and the available surgical space is limited. For example, in a transnasal approach, instruments such as neuroendoscopy need to be inserted into the cranium through the nasal cavity, leaving limited space within the nasal cavity. The limited space for manipulating deep tissues and the limited angle adjustment of instruments result in suboptimal suturing effects with existing instruments. For instance, patent CN210408500U discloses a deep tissue suture device comprising a hollow needle, an inner core, and a suture guide. The hollow needle has a hollow cavity, and the inner core is removably positioned within it. After the hollow needle pierces the tissue on one side of the wound, the inner core is withdrawn from the cavity to create a suture channel. The suture guide is configured to deliver suture thread through the suture channel. The device includes a sheath, a suture rod, a handle, and a suture end. The suture rod is located inside the sheath, with one end connected to the handle. The suture end is a spindle-shaped structure located at the end of the suture rod furthest from the handle, allowing it to move in and out of the sheath under the pushing and pulling action of the suture rod. However, this deep tissue suturer requires two steps to complete the suturing, which is inefficient, as it can only suture one stitch at a time. When the wound is long, multiple sets of equipment are needed to repeat the operation to achieve a single suture. In addition, forceps and other tools are required for assistance during the suturing process, making it unsuitable for deep intracranial tissues.

[0003] Patent CN113274077A also discloses a deep tissue suture device, including a metal buckle and a needle holder that can slide relative to the metal buckle. Suture needles are provided on both sides of the bottom of the needle holder, and the tail ends of the two suture needles are connected by sutures. However, this deep tissue suture device requires manual control, and the entire device is relatively large. During operation, the metal buckle needs to be held and stabilized with the palm of the hand, and then the needle holder needs to be hooked with the fingers. This feature limits the area in which it can work, and it is obviously not suitable for suturing deep intracranial tissues. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide an instrument capable of performing suturing and ligation operations in deep intracranial tissues. This instrument is small in size, capable of entering deep, narrow tissues and flexibly adjusting its direction. Furthermore, it can complete the suturing operation in one continuous motion, dividing the suturing process into multiple units. After each stitch is completed, the device position can be adjusted to continue suturing the next stitch, making it convenient and efficient, and enabling post-suture ligation. This invention can not only semi-automatically complete suturing of deep intracranial tissues but is also applicable to other deep tissues, thus having a wide range of applications.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0006] Embodiments of the present invention provide an intracranial deep tissue suturing and ligation device, including a suturing mechanism for suturing and a steering mechanism for controlling the direction of the suturing system; the suturing mechanism includes a first drive suture wheel, a second drive suture wheel, a suture wheel, a suture needle, a first suture needle post, a second suture needle post, a first guide cylinder, and a second guide cylinder. The suture wheel is connected to the first drive suture wheel, the first drive suture wheel controls the rotation of the first guide groove, and the second drive suture wheel controls the rotation of the second guide groove; the bottom of the first suture needle post is located in the first guide groove, and the head extends out of the arc-shaped groove on the first guide cylinder; the bottom of the second suture needle post is located in the second guide groove, and the head extends out of the arc-shaped groove on the second guide cylinder; the heads of the first and second suture needle posts are provided with holes for the suture needle to pass through, and electromagnetic components are provided inside the first and second suture needles, controlling the suture needle by controlling whether the electromagnetic components are energized.

[0007] As a further technical solution, the steering mechanism includes a conduit, a steering gear, and a steering joint. The head of the conduit is fixedly connected to the steering gear, the steering gear is connected to the steering joint housing via a central shaft, and the central shaft is connected to the steering joint via a thread. Two opposing electromagnetic drive modules are fixed inside the steering joint housing. The electromagnetic drive modules drive the positioning block to move, thereby controlling the position of the steering gear. The steering line passes through the conduit and is connected to the steering joint housing. The steering of the suture mechanism can be achieved through the two drive lines of the conduit and the electromagnetic drive block.

[0008] As a further technical solution, the electromagnetic drive module and the locking block are connected by a spring and a guide shaft.

[0009] As a further technical solution, two drive lines in different directions are wound around the first drive sheave. The drive lines pass through the conduit and the steering wheel located on the inner wall of the first guide cylinder and then turn and are wound around the first drive sheave.

[0010] As a further technical solution, two drive lines in different directions are wound around the second drive line wheel. The drive lines pass through the conduit and the steering wheel located on the inner wall of the second guide cylinder and then turn and are wound around the second drive line wheel.

[0011] As a further technical solution, the head of the second guide cylinder is arc-shaped.

[0012] As a further technical solution, the suture needle is an arc-shaped needle.

[0013] As a further technical solution, the axes of the first drive thread wheel, the second drive thread wheel, the stitching thread wheel, the first guide cylinder, and the second guide cylinder are on the same straight line.

[0014] As a further technical solution, the stitching wheel is threadedly connected to the first drive wheel, and the first drive wheel is threadedly connected to the first guide groove.

[0015] As a further technical solution, the second drive wheel is threadedly connected to the second guide groove.

[0016] The beneficial effects of the above embodiments of the present invention are as follows:

[0017] 1. This invention designs a surgical suturing and ligation device for deep human tissues. The device controls the transfer of the suture needle and the operation of the steering system through a drive line, so that the power system is far away from the suturing and steering system, compressing the space volume of the working part of the device, meeting the use requirements of narrow space in minimally invasive surgery, thereby realizing the suturing and ligation of deep human tissues in minimally invasive surgery.

[0018] 2. The steering system is controlled by the drive line and uses an electromagnetic control locking block in combination with gears to fix the position. The three work together to ensure stable operation of the device, which can not only ensure precise control of the steering angle, but also ensure that the angle does not change after steering. Ultimately, the suture needle column moves on the arc trajectory of the guide sleeve to achieve precise tissue suturing.

[0019] 3. The device's rotation and suturing process are both motor-controlled, enabling automated operation. After completing one round of suturing, manual control can be used to begin the next round. The suturing process is broken down into multiple suturing units, and the suturing length can be controlled by adjusting the number of these units. After suturing, the sutures containing the attached tissue are sutured again to complete the ligation procedure.

[0020] 4. The device has a simple structure, is easy to install and disassemble, is convenient to operate, and has high safety. It can not only complete the suturing of deep intracranial tissues, but is also applicable to the suturing of other deep tissues, and has a wide range of applications. It can be sterilized and supplied for use in surgery. Attached Figure Description

[0021] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the main structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the main structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the steering joint housing of the present invention;

[0027] The diagram exaggerates the spacing or dimensions between parts to show their positions; the diagram is for illustrative purposes only.

[0028] 1. Guide tube; 2. Steering gear; 3. Central shaft; 4. Suture wheel; 5. First drive suture wheel; 6. First suture needle post; 7. Suture needle; 8. Second guide groove; 9. Second drive suture wheel; 10. Arc-shaped protective shell; 11. Second guide sleeve; 12. Second suture needle post; 13. First guide sleeve; 14. Steering joint shell; 15. Electromagnetic drive block; 16. Locking block; 17. Steering cable fixing hole; 18. Drive cable through hole; 19. First guide groove; Detailed Implementation

[0029] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0030] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0031] For ease of description, the words "up," "down," "left," and "right" appearing in this invention only indicate that they are consistent with the up, down, left, and right directions of the accompanying drawings themselves, and do not limit the structure. They are merely for the purpose of facilitating the description of this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] Terminology Explanation: The terms "installation," "connection," "linking," and "fixing" in this invention should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction relationship between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, the present invention proposes a deep intracranial tissue suturing and ligation device.

[0034] In a typical embodiment of the present invention, such as Figure 1 As shown,

[0035] To achieve deep tissue suturing and ligation, this invention provides a novel suturing and ligation device, primarily possessing the following functions: 1. The device is small in size, enabling it to enter deep, narrow tissues and flexibly adjust its direction; 2. The device can complete the suturing operation in one pass; 3. The device can perform ligation after suturing. To achieve the above functions, this invention adopts the following technical solution:

[0036] This invention discloses a device for suturing and ligating deep tissues in the human body. The device is placed into the deep tissue to be sutured, and the movement of the suture needle guide post is controlled by a flexible drive line, thereby controlling the suture needle to suture the tissue.

[0037] The device specifically includes a suturing system for performing suturing and a steering system for controlling the direction of the suturing system; wherein the steering system includes a conduit 1, a steering gear 2 and a steering joint, the conduit 1 and the steering gear 2 are fixedly connected by welding, the steering gear 2 and the steering joint housing 14 are connected by a central shaft 3, and the central shaft 3 and the steering joint are connected by threads;

[0038] An electromagnetic drive module 15 is fixed inside the steering joint housing 14. The electromagnetic drive module 15 can drive the locking block 16 to move up and down, thereby controlling the position of the steering gear 2. Two steering line fixing holes 17 are provided on the left side of the steering joint housing 14. Two drive lines through the conduit are connected to the fixing holes 17 respectively. Controlling the two steering lines can control the rotation angle of the sewing mechanism. The locking block 16 and the electromagnetic drive module 15 are connected by an elastic element. When the rotation reaches the set position, the electromagnetic drive module 15 is de-energized, and the locking block 16 is locked on the gear teeth of the steering gear 2 under the action of the spring, and the sewing mechanism stops rotating. When the sewing mechanism needs to rotate, the electromagnetic drive module 15 is energized, attracting the locking block 16, and the sewing mechanism rotates.

[0039] The suturing mechanism includes a first drive thread wheel 5, a second drive thread wheel 9, a first guide groove 19, a second guide groove 8, a first guide sleeve 13, a second guide sleeve 11, a suturing thread wheel 4, an arc-shaped protective shell 10, and a suturing needle 7, which can be further divided into a first drive module and a second drive module.

[0040] The first suture needle post 6 and the second suture needle post 12 mentioned above are cylindrical structures. Each of the first suture needle post 6 and the second suture needle post 12 has a circular hole at its upper part. An electromagnet is installed in the circular hole. By controlling whether the electromagnet is energized or not, the suture needle 7 can be controlled to be attracted to or disconnected from the first suture needle post 6 and the second suture needle post 12. The head of the suture needle 7 passes through the second suture needle post 12, and the tail is located inside the first suture needle post 6.

[0041] The lower parts of the first suture needle column 6 and the second suture needle column 12 are both square slider structures. The square slider at the bottom of the first suture needle column 6 cooperates with the guide groove 19; the second suture needle column 12 cooperates with the guide groove 8; an arc groove is provided on the outer wall of the guide sleeve 11 and an arc groove is provided on the outer wall of the guide sleeve 13. The head of the first suture needle column 6 passes through the arc groove on the guide sleeve 13 and the head is exposed outside the guide sleeve 13, and can slide back and forth along the arc groove on the guide sleeve 13.

[0042] The head of the second suture needle column 12 passes through the arc groove on the guide sleeve 11, and the head is exposed outside the guide sleeve 11, and can slide back and forth along the arc groove on the guide sleeve 11.

[0043] The suture wheel 4 is connected to the first drive suture wheel 5, the first drive suture wheel 5 is connected to the first guide groove 19, and the second guide groove 8 is connected to the second drive suture wheel 9 via studs. The first drive suture wheel 5 controls the rotation of the first guide groove 19, and the second drive suture wheel 9 controls the rotation of the second guide groove 8. The two guide grooves can rotate independently, thereby allowing the first suture needle post 6 and the second suture needle post 12 to rotate independently.

[0044] The aforementioned stitching wheel 4, first drive wheel 5, first guide groove 19, second guide groove 8, and second drive wheel 9 are located on the same straight line;

[0045] Furthermore, first and second flexible drive lines are wound on the first drive spool 5; third and fourth flexible drive lines are wound on the second drive spool 9. The first flexible drive line on the first drive spool 5 passes through the conduit 1, turns after passing the guide wheel located on the first guide sleeve, and then winds around the first drive spool, controlling the first drive spool 5 to rotate clockwise. The second flexible drive line passes through the conduit 1, turns after passing the other guide wheel located on the first guide sleeve, and then winds around the first drive spool, controlling the first drive spool 5 to rotate counterclockwise. Thus, the first drive spool 5 drives the first guide groove 19 to rotate clockwise or counterclockwise.

[0046] Similarly, the third flexible drive line on the second drive spool 9 passes through the conduit 1, is turned by a guide wheel located on the second guide sleeve, and then winds around the second drive spool 9, controlling the second drive spool 9 to rotate clockwise.

[0047] The fourth flexible drive line passes through the conduit 1, turns after passing another guide wheel located on the second guide sleeve, and winds around the second drive line wheel 9, controlling the second drive line wheel 9 to rotate counterclockwise; the second drive line wheel 9 drives the second guide groove 8 to rotate.

[0048] The rotation of the drive thread wheel can be controlled by controlling the winding direction of the drive thread, which in turn drives the guide groove 8 and guide groove 19 to rotate, thereby causing the suture needle column 6 and suture needle column 12 to move on the arc trajectory of the guide sleeve; finally, an arc protective shell 10 is attached to the right side of the second guide sleeve 11 to prevent the device from scratching the tissue during operation.

[0049] A suture thread is wound on the suture wheel 4, and the tail of the suture needle 7 is connected to the suture thread on the suture wheel 4. The suture needle 7 is an arc-shaped needle.

[0050] Furthermore, the aforementioned sutures and drive lines can be controlled manually or by a motor. If controlled by a motor, automated control can be achieved. After completing one round of suturing, manual control can initiate the next round, breaking the suturing process down into multiple suturing units. The suture length can be controlled by adjusting the number of suturing units. After suturing, the sutures containing the attached tissue are sutured again to complete the ligation operation.

[0051] The procedure for ligating and suturing deep tissues is as follows;

[0052] 1. Keep catheter 1 and the suture system parallel, and deliver the suture system to the designated position through the nasal cavity.

[0053] 2. Adjust the direction of the steering gear 2 according to the required suturing angle so that the needle tip of the suture needle 7 is perpendicular to the tissue to be sutured.

[0054] 3. Control the position of the suture system through the catheter to bring it close to the tissue, manipulate the drive line catheter 1 so that the first suture needle column 6 and the suture needle 7 pass through the tissue through the first guide sleeve 13, at which point the suture needle is in the state of penetrating the tissue.

[0055] 4. After the suture needle 7 passes through the tissue, the electromagnetic component of the second suture needle column 12 is energized to attract the suture needle 7, and the electromagnetic component of the first suture needle column 6 is de-energized and electromagnetically separated from the suture needle.

[0056] 5. The second suture needle column 12, along with the suture needle 7, continues to move forward through the second guide sleeve 11 until the suture needle 7 has completely passed through the tissue and the first round of suturing is completed.

[0057] 6. Adjust the position of the suture system through the catheter to make it leave the tissue. The second suture needle column 12 rotates in the opposite direction and returns to the initial position. At this time, the needle tail of the suture needle returns to the position of the upper round hole of the first suture needle column 6. The electromagnetic component is energized to attract the suture needle 7. Then the electromagnetic component of the second suture needle column 12 is de-energized and electromagnetically separates from the suture needle 7. The first suture needle column rotates in the opposite direction and returns to the initial working position.

[0058] 7. Then continue to adjust the position of the suture system so that it is close to the tissue that needs to be sutured next, and repeat steps 3-6 to complete the next round of suturing.

[0059] 8. After completing a sufficient number of sutures according to the tissue suturing requirements, adjust the angle of the drive suture tube 1 and the steering gear 2 so that the needle tip is perpendicular to the suture line completed in the previous round.

[0060] 9. Repeat steps 3-6 above, hooking the needle onto the suture thread completed in the previous round, and complete the required number of ligations. Tighten the suture thread, and the suturing and ligation operation is now complete.

[0061] Finally, it should be noted that relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0062] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for suturing and ligating deep intracranial tissues, characterized in that, The system includes a suturing mechanism for achieving suturing and a steering mechanism for controlling the direction of the suturing system. The suturing mechanism comprises a first drive spool, a second drive spool, a suturing thread spool, a suturing needle, a first suturing needle post, a second suturing needle post, a first guide cylinder, and a second guide cylinder. The suturing thread spool is connected to the first drive spool, which controls the rotation of the first guide groove, and the second drive spool controls the rotation of the second guide groove. The bottom of the first suturing needle post is located within the first guide groove, and its head extends from an arc-shaped groove on the first guide cylinder. The bottom of the second suturing needle post is located within the second guide groove, and its head extends from an arc-shaped groove on the second guide cylinder. Holes for the suturing needle to pass through are provided at the heads of the first and second suturing needle posts, and electromagnetic components are installed within the first and second suturing needle posts. The connection and disconnection of the suturing needle from the suturing needle post are controlled by controlling whether the electromagnetic components are energized.

2. The intracranial deep tissue suturing and ligation instrument as described in claim 1, characterized in that, The steering mechanism includes a conduit, a steering gear, and a steering joint. The head of the conduit is fixedly connected to the steering gear, and the steering gear is connected to the steering joint housing via a central shaft. Inside the steering joint housing, there are two opposing electromagnetic drive modules. Each of the two electromagnetic drive modules drives a corresponding locking block to move, thereby controlling the position of the steering gear. Two steering lines pass through the conduit and are connected to the steering joint housing.

3. The intracranial deep tissue suturing and ligation instrument as described in claim 2, characterized in that, The electromagnetic drive module and the locking block are connected by a spring and a guide shaft.

4. The intracranial deep tissue suturing and ligation instrument as described in claim 2, characterized in that, Two drive lines in different directions are wound around the first drive spool. The drive lines pass through the conduit and the steering wheel located on the inner wall of the first guide cylinder and then turn and are wound around the first drive spool.

5. The intracranial deep tissue suturing and ligation instrument as described in claim 2, characterized in that, Two drive lines in different directions are wound around the second drive sheave. The drive lines pass through the conduit and the steering wheel located on the inner wall of the second guide cylinder and then turn and are wound around the second drive sheave.

6. The intracranial deep tissue suturing and ligation instrument as described in claim 1, characterized in that, The head of the second guide tube is arc-shaped.

7. The intracranial deep tissue suturing and ligation instrument as described in claim 1, characterized in that, The suture needle is an arc-shaped needle.

8. The intracranial deep tissue suturing and ligation instrument as described in claim 1, characterized in that, The axes of the first drive thread wheel, the second drive thread wheel, the stitching thread wheel, the first guide cylinder, and the second guide cylinder are on the same straight line.

9. The intracranial deep tissue suturing and ligation instrument as described in claim 1, characterized in that, The stitching wheel is threadedly connected to the first drive wheel, and the first drive wheel is threadedly connected to the first guide groove.

10. The intracranial deep tissue suturing and ligation instrument as described in claim 1, characterized in that, The second drive wheel is threadedly connected to the second guide groove.

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