Universal suturing device suitable for dura mater and dura mater

Abstract

The invention discloses a universal suturing device suitable for dura mater and dura mater, and belongs to the technical field of medical instruments, the universal suturing device comprises a cylinder, an arc-shaped groove is formed in the front end in the cylinder, a suturing needle is inserted in the arc-shaped groove, a mounting groove is formed in the cylinder, a driving mechanism is arranged in the mounting groove, and the suturing needle is connected with the driving mechanism; and the driving mechanism is connected with a clamping mechanism. According to the universal suturing device suitable for the dura mater and the dura mater, the suturing requirements of two kinds of elastic tissues with different thicknesses can be met at the same time, and the applicability is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a universal suturing device suitable for dura mater and pia mater. BACKGROUND

[0002] With the development of minimally invasive technology, endoscopic surgery has been widely used in the field of spinal surgery, skull base surgery and other fields due to its advantages of small trauma, clear vision, fast postoperative recovery and the like. Dura mater and pia mater are important protective structures of the central nervous system, which wrap the spinal cord and brain tissue respectively. The tissue characteristics of dura mater and pia mater are different: the dura mater is located in the intracranial cavity, has a relatively thick texture and low elasticity, and has a higher requirement for suturing strength; the pia mater is located in the spinal canal, has a relatively thin texture and is rich in elastic fibers, and needs to avoid excessive traction to cause secondary injury during suturing. The existing endoscopic suturing devices are mostly designed for single tissue, lack of universality, and need to replace different instruments according to the surgical site in the clinic, which not only prolongs the operation time, but also increases the risk of interference to the surrounding neural tissue during the instrument switching process. SUMMARY

[0003] The purpose of the present application is to provide a universal suturing device suitable for dura mater and pia mater, which can simultaneously meet the suturing requirements of two different thickness and elasticity tissues, and has strong applicability.

[0004] To achieve the above-mentioned purpose, the present application provides a universal suturing device suitable for dura mater and pia mater, which comprises a barrel, an arc-shaped groove is formed in the front end of the barrel, a suturing needle is inserted into the arc-shaped groove, an installation groove is formed in the barrel, a driving mechanism is arranged in the installation groove, the suturing needle is connected with the driving mechanism, and a clamping mechanism is connected with the driving mechanism.

[0005] Preferably, the driving mechanism comprises a guide rail arranged in the installation groove, a rack is inserted into the guide rail, a gear is engaged with the bottom surface of the rack, a rotating shaft is connected with the side wall of the gear, the rotating shaft penetrates through the side wall of the installation groove, the clamping mechanism is connected with the rotating shaft, a rotating disc is connected with the rotating shaft, a connecting shaft is connected with the side wall of the rotating disc, a first connecting rod is sleeved on the connecting shaft, a positioning assembly is arranged at the other end of the first connecting rod, and the suturing needle is connected with the positioning assembly.

[0006] Preferably, the positioning assembly comprises a limiting cylinder arranged on the first connecting rod, a limiting block is inserted into the limiting cylinder, a plug rod is connected with one side of the limiting block, and the plug rod penetrates through the first connecting rod and is inserted into the inside of the suturing needle.

[0007] Preferably, a limiting groove is formed in the side wall of the barrel, the other end of the limiting cylinder penetrates through the limiting groove and slides along the limiting groove.

[0008] Preferably, a positioning screw is inserted into the other side of the limiting block, and the other end of the positioning screw penetrates through the limiting cylinder.

[0009] Preferably, a first spring is sleeved on the positioning screw, one end of the first spring is connected to the side wall of the limiting block, and the other end of the first spring is connected to the inner wall of the limiting cylinder.

[0010] Preferably, a connecting plate is connected to one end of the rack, an operating handle is connected to the bottom end of the connecting plate, a groove is opened on the bottom surface of the cylinder, and the bottom end of the operating handle passes through the groove.

[0011] Preferably, a second spring is connected to the side wall of the connecting plate, and the other end of the second spring is in contact with the inner wall of the mounting groove.

[0012] Preferably, the clamping mechanism includes a second connecting rod, a connecting screw is inserted into the side wall of one end of the second connecting rod, the connecting screw passes through the second connecting rod and is inserted into the inside of the rotating shaft, and a clamping block is connected to the other end of the second connecting rod.

[0013] Preferably, it also includes a handle located at the rear end of the cylinder, and the handle is covered with an anti-slip sleeve.

[0014] Therefore, the present invention employs the above-mentioned universal suturing device applicable to the dura mater and the meninges, which can simultaneously meet the suturing requirements of two tissues with different thicknesses and elasticities.

[0015] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is a front view (a) of the universal suturing device for spinal dura mater and dura mater in this invention. Figure 2 This is a schematic diagram of the specific structure of the drive mechanism in this invention; Figure 3 This is an enlarged view of point A in this invention; Figure 4 This is a front view (II) of the universal suturing device for spinal dura mater and dura mater in this invention.

[0017] Figure Labels 1. Cylinder body; 2. Arc groove; 3. Sewing needle; 4. Mounting groove; 5. Guide rail; 6. Rack; 7. Gear; 8. Rotating shaft; 9. Turntable; 10. Connecting shaft; 11. First connecting rod; 12. Limiting cylinder; 13. Limiting block; 14. Insert rod; 15. Limiting groove; 16. Positioning screw; 17. First spring; 18. Connecting plate; 19. Operating handle; 20. Slide groove; 21. Second spring; 22. Second connecting rod; 23. Connecting screw; 24. Clamping block; 25. Grip; 26. Anti-slip sleeve. Detailed Implementation

[0018] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] Example 1 like Figure 1 , Figure 2 As shown, a universal suturing device suitable for the dura mater and dura mater includes a cylindrical body 1, a suture needle 3, and a driving mechanism. An arc-shaped groove 2 is provided at the front end of the inner cavity of the cylindrical body 1. The suture needle 3 is inserted into the inner cavity of the arc-shaped groove 2 and slides along the arc-shaped groove 2. An installation groove 4 is provided inside the inner cavity of the cylindrical body 1. The front end of the installation groove 4 is connected to the arc-shaped groove 2. The driving mechanism is located inside the installation groove 4. The suture needle 3 is connected to the driving mechanism.

[0021] The drive mechanism includes a guide rail 5, a rack 6, a gear 7, a turntable 9, a first connecting rod 11, and a positioning component. The guide rail 5 and the cylinder 1 are integrally formed. The rack 6 is inserted into the guide rail 5 and slides along the guide rail 5. The bottom surface of the rack 6 meshes with the gear 7. A rotating shaft 8 is welded to the side wall of the gear 7. The other end of the rotating shaft 8 passes through the side wall of the mounting groove 4. A turntable 9 is sleeved on the rotating shaft 8 and welded to the rotating shaft 8. A connecting shaft 10 is welded to the side wall of the turntable 9. One end of the first connecting rod 11 is sleeved on the connecting shaft 10 and rotates around the connecting shaft 10. A positioning component is provided at the other end of the first connecting rod 11. The suture needle 3 is connected to the positioning component.

[0022] like Figure 3As shown, the positioning assembly includes a limiting cylinder 12, a limiting block 13, and an insert rod 14. The limiting cylinder 12 is welded to the side wall of the first connecting rod 11. The limiting block 13 is inserted into the inside of the limiting cylinder 12 and slides along the inside of the limiting cylinder 12. The insert rod 14 is welded to one side of the limiting block 13. A through hole is opened on the side wall of the first connecting rod 11, and an insertion hole is opened on the side wall of the suture needle 3. The insert rod 14 passes through the through hole of the first connecting rod 11 and is inserted into the insertion hole of the suture needle 3. A limiting groove 15 is opened on the side wall of the cylinder 1. The limiting groove 15 is connected to the inside of the mounting groove 4. The other end of the limiting cylinder 12 passes through the limiting groove 15 and slides along the limiting groove 15.

[0023] The positioning assembly also includes a positioning screw 16 and a first spring 17. The limiting block 13 has a rotating groove inside. One end of the positioning screw 16 is welded with a rotating shaft, which is inserted into the rotating groove and rotatably connected to it. The end of the limiting cylinder 12 away from the first connecting rod 11 has a threaded hole that matches the positioning screw 16. The other end of the positioning screw 16 passes through the threaded hole and is threadedly connected to it. The positioning screw 16 is fitted with a first spring 17. One end of the first spring 17 is welded to the side wall of the limiting block 13, and the other end is welded to the inner wall of the limiting cylinder 12.

[0024] A connecting plate 18 is welded to the other end of the rack 6. The connecting plate 18 slides along the mounting groove 4. An operating handle 19 is welded to the bottom end of the connecting plate 18. A sliding groove 20 is opened on the bottom surface of the cylinder 1. The sliding groove 20 is connected to the interior of the mounting groove 4. The bottom end of the operating handle 19 passes through the sliding groove 20 and slides along the sliding groove 20. A second spring 21 is welded to the side wall of the connecting plate 18. The other end of the second spring 21 is in contact with the inner wall of the mounting groove 4.

[0025] A universal suturing device suitable for spinal dura mater and dura mater further includes a handle 25 and an anti-slip sleeve 26. The handle 25 is integrally formed with the cylinder 1, and the anti-slip sleeve 26 is fitted onto the handle 25. Preferably, the anti-slip sleeve 26 is made of rubber and has anti-slip texture.

[0026] When used for dural sutures, the working principle of this device is as follows: First, the suture needle 3 is fixed by the positioning component. Then, the positioning screw 16 is rotated, which pushes the limiting block 13 to slide along the limiting cylinder 12 through the rotating shaft, so that the insertion rod 14 passes through the hole of the first connecting rod 11 and is inserted into the insertion hole of the suture needle 3. The first spring 17 is simultaneously subjected to force and deforms to assist in the limiting, thus completing the stable positioning of the suture needle 3. During operation, the doctor holds the handle 25 with a rubber anti-slip sleeve 26 to increase the grip friction and prevent slippage during operation. The operating handle 19 on the bottom of the cylinder 1 is turned to drive the connecting plate 18 and the rack. 6 slides along guide rail 5, rack 6 meshes with gear 7 to make rotating shaft 8 rotate, which in turn drives turntable 9 to rotate. Turntable 9 drives first connecting rod 11 to rotate around connecting shaft 10 through connecting shaft 10, causing positioning component to drive suture needle 3 to slide along arc groove 2 at the front end of cylinder 1, realizing precise suturing of dura mater. After suturing, release operating handle 19, second spring 21 on side wall of connecting plate 18 resets, driving rack 6, gear 7, turntable 9 and first connecting rod 11 back to their original positions, completing one suturing cycle.

[0027] Example 2 A clamping mechanism is added based on Embodiment 1, and the clamping mechanism is connected to the rotating shaft 8.

[0028] like Figure 4 As shown, the clamping mechanism includes a second connecting rod 22, a connecting screw 23, and a clamping block 24. One end of the side wall of the second connecting rod 22 has a threaded hole that matches the connecting screw 23. The connecting screw 23 is inserted into the threaded hole of the second connecting rod 22. The connecting screw 23 is threadedly connected to the threaded hole of the second connecting rod 22. The side wall of the rotating shaft 8 has a threaded hole that matches the connecting screw 23. The connecting screw 23 passes through the threaded hole on the second connecting rod 22 and is inserted into the threaded hole of the rotating shaft 8. The part of the connecting screw 23 that passes through the second connecting rod 22 is threadedly connected to the threaded hole of the rotating shaft 8. The clamping block 24 is integrally formed with the second connecting rod 22.

[0029] When used for dural suturing, the device works as follows: First, complete the installation of the suture needle 3 fixing and clamping mechanism. Rotate the positioning screw 16 to push the limiting block 13 to slide along the limiting cylinder 12, so that the insertion rod 14 passes through the first connecting rod 11 and is inserted into the insertion hole of the suture needle 3. The first spring 17 deforms to assist in the limiting. At the same time, the second connecting rod 22 is threaded to the rotating shaft 8 through the connecting screw 23, and the clamping mechanism with clamping block 24 is installed. During operation, hold the handle 25 with rubber anti-slip sleeve 26 and turn the operating handle 19 to drive the connecting plate 18 and the rack 6 to slide along the guide rail 5. The rack 6 meshes with the gear 7 to make the rotating shaft 8 rotate. The rotating shaft 8 synchronously drives the turntable 9 to rotate and the clamping mechanism to move. The turntable 9 drives the first connecting rod 11 to rotate through the connecting shaft 10, thereby causing the positioning component to drive the suture needle 3 to slide along the arc groove 2 to realize the dura mater suturing. The clamping mechanism helps to stabilize the suturing site. After suturing, release the handle, and the second spring 21 resets and drives all components to return to their positions, completing one suturing cycle.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A universal suturing device suitable for the dura mater and meninges, characterized in that: The device includes a cylindrical body, an arc-shaped groove is provided at the front end of the inner side of the cylindrical body, a suture needle is inserted into the arc-shaped groove, an installation groove is provided inside the cylindrical body, a drive mechanism is provided inside the installation groove, the suture needle is connected to the drive mechanism, and a clamping mechanism is connected to the drive mechanism.

2. The universal suturing device for spinal dura mater and dura mater according to claim 1, characterized in that: The driving mechanism includes a guide rail disposed inside the mounting groove, a rack inserted on the guide rail, a gear meshing on the bottom surface of the rack, a rotating shaft connected to the side wall of the gear, the rotating shaft passing through the side wall of the mounting groove, a clamping mechanism connected to the rotating shaft, a turntable connected to the rotating shaft, a connecting shaft connected to the side wall of the turntable, a first connecting rod sleeved on the connecting shaft, a positioning component disposed at the other end of the first connecting rod, and the suture needle connected to the positioning component.

3. A universal suturing device for spinal dura mater and dura mater according to claim 2, characterized in that: The positioning component includes a limiting cylinder disposed on the first connecting rod, a limiting block inserted inside the limiting cylinder, and an insert rod connected to one side of the limiting block. The insert rod passes through the first connecting rod and is inserted into the suture needle.

4. A universal suturing device for spinal dura mater and dura mater according to claim 3, characterized in that: The side wall of the cylinder is provided with a limiting groove, and the other end of the limiting cylinder passes through the limiting groove and slides along the limiting groove.

5. A universal suturing device for spinal dura mater and dura mater according to claim 3, characterized in that: A positioning screw is inserted on the other side of the limiting block, and the other end of the positioning screw passes through the limiting cylinder.

6. A universal suturing device for spinal dura mater and dura mater according to claim 5, characterized in that: A first spring is sleeved on the positioning screw. One end of the first spring is connected to the side wall of the limiting block, and the other end of the first spring is connected to the inner wall of the limiting cylinder.

7. A universal suturing device for spinal dura mater and dura mater according to claim 2, characterized in that: One end of the rack is connected to a connecting plate, and the bottom end of the connecting plate is connected to an operating handle. A sliding groove is provided on the bottom surface of the cylinder, and the bottom end of the operating handle passes through the sliding groove.

8. A universal suturing device for spinal dura mater and dura mater according to claim 7, characterized in that: A second spring is connected to the side wall of the connecting plate, and the other end of the second spring is in contact with the inner wall of the mounting groove.

9. A universal suturing device for spinal dura mater and dura mater according to claim 2, characterized in that: The clamping mechanism includes a second connecting rod, a connecting screw is inserted into the side wall of one end of the second connecting rod, the connecting screw passes through the second connecting rod and is inserted into the inside of the rotating shaft, and a clamping block is connected to the other end of the second connecting rod.

10. A universal suturing device for spinal dura mater and dura mater according to claim 1, characterized in that: It also includes a handle located at the rear end of the cylinder, and the handle is covered with an anti-slip sleeve.

Images