Endoscope transnasal skull base dura mater stitching instrument

Abstract

The invention discloses an endoscope transnasal skull base dura mater stitching instrument, and relates to the field of medical instruments, the endoscope transnasal skull base dura mater stitching instrument comprises a stitching instrument main body, an end protection shell, a locking mechanism, an auxiliary mechanism, a connecting rope assembly and a trachea assembly, the locking mechanism comprises a locking sleeve arranged in a first position hole in a sliding mode, and the locking sleeve is of a cylindrical structure with one end open; an elastic body is fixedly arranged on the inner wall of the opening end of the locking sleeve, when the needle sleeve extends into the first position hole, the locking sleeve is controlled to move in the first position hole, and when the elastic body on the locking sleeve is clamped into the annular clamping groove in the outer ring of the needle sleeve, the needle sleeve is fixed to the locking sleeve. According to the invention, the purposes of pulling up the dura mater to facilitate suturing, position adjustment, knotting and degradation during suturing are simultaneously realized, and the defect that a knotting mechanism, a suturing mechanism and an endoscope mechanism cannot be simultaneously placed on a narrow skull base in the prior art is overcome.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, in particular to an endoscopic transnasal skull base dura mater suturing device. Background Art

[0002] Considering that the dura mater (dura mater) is attached to the base of the skull and is not easy to peel off, suturing is difficult. Conventional fascia suture devices cannot be used to suture the dura mater at the base of the skull. In addition, the space at the base of the skull is small, making it difficult to place knotting mechanisms, suturing mechanisms, endoscope mechanisms, etc. at the same time. Therefore, the operation is difficult and the operating space is small.

[0003] Therefore, it is necessary to propose an endoscopic transnasal skull base dura mater suture device to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide an endoscopic transnasal skull base dura mater suturing device, which can simultaneously pull up the dura mater for convenient suturing, suturing, adjusting the position during suturing, tying knots, and degradation, and has a large operating space.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an endoscopic transnasal skull base dura mater suturing device, comprising:

[0006] A stapler body, the stapler body serving as a main body support, wherein one end surface of the stapler body is provided with a first position hole and a second position hole;

[0007] An end protection shell is provided at one end of the stapler body and is used to set the suturing mechanism and the first driving mechanism;

[0008] The suturing mechanism includes a suturing needle and a needle sleeve. The suturing needle is a curved needle-like structure. The needle sleeve is detachably mounted on the horizontal section of the suturing needle. The first driving mechanism drives the suturing needle and the needle sleeve to reciprocate within a range of degrees. During the reciprocating rotation, the suturing operation is performed.

[0009] The locking mechanism includes a locking sleeve slidably disposed in the first position hole. The locking sleeve is a cylindrical structure with one end open. An elastic body is fixedly disposed on the inner wall of the open end of the locking sleeve. When the needle sleeve is inserted into the first position hole, the locking sleeve is controlled to move in the first position hole. When the elastic body on the locking sleeve is engaged with the annular groove on the outer ring of the needle sleeve, the needle sleeve is fixed on the locking sleeve. After the suture needle is reset, the suture needle and the needle sleeve are separated.

[0010] The auxiliary mechanism includes a protective tube slidably disposed in the second position hole, a dura mater holder slidably disposed inside the protective tube, the dura mater holder having a spiral structure, and an end plate fixedly disposed at one end of the dura mater holder, the end plate being slidably disposed in the protective tube;

[0011] The connecting rope assembly includes a first connecting rope, a second connecting rope, and a third connecting rope. The first connecting rope movably passes through the suture device body and is fixedly connected to the locking sleeve. The second connecting rope movably passes through the protective tube and is fixedly connected to the end plate. The third connecting rope movably passes through the suture device body and is fixedly connected to the protective tube. When the first connecting rope, the second connecting rope, and the third connecting rope are pulled, the locking sleeve, the dura mater holder, and the protective tube are respectively controlled to slide.

[0012] The trachea assembly includes a first trachea and a second trachea, the first trachea is connected to the interior of the first position hole, and the second trachea is connected to the interior of the protective tube. When air is ventilated into the first position hole and the protective tube respectively through the first trachea and the second trachea, the locking sleeve and the dura mater puller slide in opposite directions.

[0013] Preferably, the needle sleeve, suture, dura mater holder and end plate are made of any one of polylactic acid, polylactic acid-glycolic acid copolymer, polyhydroxyalkanoate, polycaprolactone and collagen.

[0014] Preferably, a second driving mechanism is provided inside the stapler body: a second motor, a second driving shaft is fixedly connected to the rotating shaft of the second motor, the second driving shaft is fixedly connected to the end protective shell, and the first position hole and the second position hole are distributed on a circumference around the second driving shaft.

[0015] Preferably, a control assembly is provided at one end of the stapler body away from the end protective shell, and the control assembly includes a wristband and a pull rod. The pull rod is slidably arranged in the stapler body and is used to pull the connecting rope assembly. The wristband is fixedly connected to one end of the pull rod that extends through to the outside of the stapler body.

[0016] Preferably, a wire groove is provided at the outer ring of the needle sleeve, a second perforation is provided on the locking sleeve, and a first perforation is provided at the bottom of the stapler body. The suture thread used for suturing passes through the first perforation and the second perforation in sequence and is engaged in the wire groove.

[0017] Preferably, a first elastic block is provided at the outer ring of the suture needle, and a first slot is provided on the inner wall of the needle sleeve. The first elastic block is engaged in the first slot to achieve relative fixation of the suture needle and the needle sleeve.

[0018] Preferably, the first driving mechanism includes a first motor fixedly connected to the inner wall of the end protective shell, the first driving shaft is fixedly connected to the rotating shaft of the first motor, the external fixed sleeve of the first driving shaft is provided with a fixed connecting sleeve, and a connecting rod is fixedly provided at the outer ring of the fixed connecting sleeve, and the connecting rod is connected between the end away from the fixed connecting sleeve and the suture needle.

[0019] Preferably, a first limiting ring is fixedly provided on the inner wall of the opening of the protective tube, a second limiting ring is also provided on the opening position of the second position hole passing through the end face of the suture device body, and a third limiting ring is fixedly provided on the outer ring of the end of the protective tube away from the dura mater holder.

[0020] Preferably, the dura mater puller has plasticity.

[0021] Preferably, the ends of the suture needle and the needle sleeve are both pointed.

[0022] Technical effects and advantages of the present invention:

[0023] 1. The present invention simultaneously achieves the purpose of pulling up the dura mater to facilitate suturing, suturing, adjusting the position during suturing, knotting, and degradation, solving the defect of the prior art that it is impossible to place the knotting mechanism, suturing mechanism, and endoscope mechanism at the same time in the narrow skull base;

[0024] 2. The present invention completes the transnasal skull base dura mater suture surgery, and while waiting for the dura mater to repair, the dura mater puller, end plate, needle sleeve, and suture thread will naturally degrade and do not need to be removed again;

[0025] 3. The protective tube of the present invention can also prevent the phenomenon of directly extending the dura mater puller from damaging the arachnoid membrane and other structural tissues;

[0026] 4. The dura mater puller of the present invention is engaged with the dura mater and drives the dura mater to be pulled up, making it easier for the suturing mechanism to sew the dura mater. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of the endoscopic transnasal skull base dura mater suture device of the present invention.

[0028] Figure 2 It is a structural schematic diagram of the suturing mechanism of the present invention when it rotates downward.

[0029] Figure 3 It is a structural schematic diagram of the suturing mechanism of the present invention when it rotates upward.

[0030] Figure 4 For the present invention Figure 2 A magnified schematic diagram of the structure in the middle.

[0031] Figure 5 For the present invention Figure 2 A magnified schematic diagram of the structure at point B in the middle.

[0032] Figure 6 It is a schematic diagram of the auxiliary mechanism structure of the present invention.

[0033] Figure 7 It is an enlarged schematic diagram of the auxiliary mechanism structure of the present invention.

[0034] Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the structure at point C in the middle.

[0035] Figure 9 It is a side view of the endoscopic transnasal skull base dura mater suture device of the present invention.

[0036] Figure 10 It is a schematic structural diagram of the protective tube of the present invention when it is extended.

[0037] Figure 11 This is a schematic structural diagram of the dura mater puller of the present invention when extended.

[0038] Figure 12 This is a schematic structural diagram of the dura mater holder of the present invention being inserted onto the dura mater.

[0039] Figure 13 It is a schematic structural diagram of the dura mater puller of the present invention when pulling the dura mater.

[0040] Figure 14 It is a schematic structural diagram of the dura mater of the present invention after suturing and before closing.

[0041] Figure: 1, stapler body; 2, end protective shell; 3, locking mechanism; 4, suturing mechanism; 5, second motor; 6, control assembly; 7, connecting rope assembly; 8, tracheal assembly; 9, first motor; 10, first drive shaft; 11, fixed connecting sleeve; 12, connecting rod; 13, first perforation; 14, suture line; 15, first position hole; 16, auxiliary mechanism; 17, second position hole; 18, protective tube; 19, dura mater puller; 20 , end plate; 21, first limiting ring; 22, second limiting ring; 23, third limiting ring; 24, dura mater; 31, locking sleeve; 32, second perforation; 33, elastomer; 41, suture needle; 42, needle sleeve; 43, wire groove; 44, annular slot; 45, first slot; 46, first elastic block; 51, second drive shaft; 61, wristband; 62, pull rod; 71, first connecting rope; 72, second connecting rope; 73, third connecting rope. DETAILED DESCRIPTION

[0042] The present invention provides Figures 1-14 The endoscopic transnasal skull base dural suture device shown can realize dural suture surgery in the narrow space of the skull base.

[0043] refer to Figures 1 to 5As shown in the figure, the present invention includes a stapler body 1, which serves as a main body support. An end protective shell 2 is provided at one end of the stapler body 1. A suturing mechanism 4 and a first driving mechanism for driving the suturing mechanism 4 to perform surgical suturing are installed in the end protective shell 2. The first driving mechanism includes a first motor 9, which is fixedly mounted on the inner wall of the end protective shell 2. A first driving shaft 10 is fixedly connected to the rotating shaft of the first motor 9. A fixed connecting sleeve 11 is provided on the outer ring of the fixed connecting sleeve 11. A connecting rod 12 is connected to the outer ring of the fixed connecting sleeve 11. The stapler body 1 is provided with a first position hole 15 and a second position hole 17 on one side of the end protective shell 2.

[0044] Among them, the suturing mechanism 4 includes a suturing needle 41 and a needle sleeve 42. The suturing needle 41 is a curved needle-shaped structure. One end of the suturing needle 41 is fixedly connected to the end of the connecting rod 12, and the other end of the suturing needle 41 is a horizontal section. The needle sleeve 42 is detachably mounted on the horizontal section. When the first motor 9 is started, the suturing needle 41 is driven to rotate along the axis of the first drive shaft 10.

[0045] When performing a suturing operation, it is necessary to first insert the suture thread 14 along the outer surface of the stapler body 1 and movably pass it into the first position hole 15. The side of the first position hole 15 is provided with a first through-hole 13 for the suture thread 14 to movably pass through. The suture thread 14 extends from the end of the stapler body 1 and is then fixed on the thread groove 43 at the outer circle of the needle sleeve 42 to achieve the connection between the suture thread 14 and the needle sleeve 42.

[0046] When suturing the dura mater 24, first extend the suture device body 1 from the nasal cavity position into the skull base, then adjust the position of the suture device body 1 to the appropriate area, start the first motor 9, and the first motor 9 drives the suture needle 41 and the needle sleeve 42 to reciprocate along the axis of the first drive shaft 10 to make a 90° rotational motion. When the needle sleeve 42 rotates downward, it passes through the dura mater 24, so that the suture thread 14 also passes through the dura mater 24. At this time, the needle sleeve 42 moves to the first position hole 15, temporarily separates the needle sleeve 42 from the suture needle 41, and the needle sleeve 42 stays in the first position hole 15. After the suture needle 41 is reset, the position of the suture device body 1 is adjusted again, and then the first motor 9 is started again to reconnect the suture needle 41 with the needle sleeve 42, thereby driving the suture thread 14 to continue to pass through the dura mater 24. This is repeated to achieve the suturing operation.

[0047] The mechanism for controlling the separation of the suture needle 41 and the needle sleeve 42 in the present invention includes a connecting rope assembly 7 and an trachea assembly 8. The connecting rope assembly 7 includes a first connecting rope 71, and the trachea assembly 8 includes a first trachea 81. A locking mechanism 3 is provided in the first position hole 15. The locking mechanism 3 includes a locking sleeve 31. The locking sleeve 31 is slidably arranged in the first position hole 15. The locking sleeve 31 is a cylindrical structure with one end open. An elastic body 33 is fixedly provided on the inner wall of the open end of the locking sleeve 31. When the needle sleeve 42 extends into the first position hole 15, the locking sleeve 31 can be controlled to move in the first position hole 15. An annular groove 44 is provided at the outer ring of the needle sleeve 42. When the elastic body 33 on the locking sleeve 31 is engaged with the annular groove 44, the needle sleeve 42 is fixed. At this time, when the suture needle 41 is reset by the first motor 9, the suture needle 41 and the needle sleeve 42 can be separated.

[0048] The first connecting rope 71 is fixedly connected to the end of the locking sleeve 31 away from the needle sleeve 42, and the first air tube 81 is communicated with the end of the first position hole 15 away from the suture needle 41. When air is inflated into the first position hole 15 through the first air tube 81, the locking sleeve 31 can be moved and sleeved on the outer ring of the needle sleeve 42. When the first connecting rope 71 is pulled, the locking sleeve 31 can be moved in the opposite direction to achieve the separation between the locking sleeve 31 and the needle sleeve 42; before the locking sleeve 31 and the needle sleeve 42 are separated, the suture needle 41 can be engaged with the inside of the needle sleeve 42, thereby achieving the purpose of reconnecting the suture needle 41 and the needle sleeve 42.

[0049] It should be noted that the ends of the suture needle 41 and the needle sleeve 42 are both pointed, which facilitates suturing through the dura mater 24. A first elastic block 46 is fixedly provided on the outer surface of the suture needle 41, and a first slot 45 is provided on the inner wall of the needle sleeve 42. When the suture needle 41 is inserted into the needle sleeve 42, the first elastic block 46 elastically deforms and engages in the first slot 45, thereby completing the purpose of connecting the suture needle 41 and the needle sleeve 42.

[0050] refer to Figures 1 to 14As shown in FIG, an auxiliary mechanism 16 is provided in the second position hole 17, the auxiliary mechanism 16 includes a protective tube 18, an end plate 20 is provided in the protective tube 18, and a dura mater puller 19 is connected to the end plate 20. The connecting rope assembly 7 also includes a second connecting rope 72 and a third connecting rope 73. The trachea assembly 8 also includes a second trachea 82. The second trachea 82 is communicated with the interior of the protective tube 18. When the interior of the protective tube 18 is inflated through the second trachea 82, the end plate 20 can slide in the protective tube 18. Thereby, the dura mater puller 19 is extended, the second connecting rope 72 moves through the protective tube 18 and is fixedly connected to the end plate 20, and the third connecting rope 73 is fixedly connected to the end of the protective tube 18 away from the dura mater puller 19. When the second connecting rope 72 is pulled, the end plate 20 can move in the direction away from the dura mater puller 19, so that the dura mater puller 19 is retracted into the protective tube 18. When the third connecting rope 73 is pulled, the protective tube 18 can be retracted into the second position hole 17.

[0051] Considering that the dura mater (cerebral dura mater) is attached to the base of the skull and is not easy to peel off, it is difficult to sew it. The dura mater at the base of the skull cannot be sutured using conventional fascia suture devices. The provision of the protective tube 18 in the present invention solves this defect well. Before suturing the dura mater, the protective tube 18 is first extended from the second position hole 17. When it is extended to the appropriate position, the dura mater puller 19 is extended and passed through the dura mater 24, and then the protective tube 18 is retracted into the second position hole 17 for a distance. Due to the spiral structure on the dura mater puller 19, the dura mater puller 19 will be engaged with the dura mater 24 and drive the dura mater 24 to be pulled up, which facilitates the suturing mechanism 4 to sew the dura mater 24. The function of the protective tube 18 can also avoid the phenomenon that the dura mater puller 19 is directly extended to easily damage structural tissues such as the arachnoid membrane.

[0052] It should be noted that a second limiting ring 22 is also provided at the opening position of the second position hole 17 that passes through the end face of the suture device body 1, and a third limiting ring 23 is fixedly provided at the outer ring of the end of the protective tube 18 away from the dura mater puller 19. The setting of the third limiting ring 23 prevents the protective tube 18 from falling out of the second position hole 17; a first limiting ring 21 is fixedly provided on the inner wall of the opening of the protective tube 18. The setting of the first limiting ring 21 can prevent the end plate 20 from falling out of the protective tube 18.

[0053] It is worth mentioning that a second driving mechanism is also provided inside the stapler body 1: a second motor 5, and a second driving shaft 51 is fixedly connected to the rotating shaft of the second motor 5. The second driving shaft 51 is fixedly connected to the end protective shell 2. When the second motor 5 is started, the end protective shell 2 can be driven to rotate along the axis of the second driving shaft 51. The first position hole 15 and the second position hole 17 are distributed on the circumference around the second driving shaft 51.

[0054] In the present invention, the dura mater holder 19, the end plate 20, and the needle sleeve 42 are all made of materials that can be degraded by the human body, such as polylactic acid, polylactic acid-glycolic acid copolymer, polyhydroxyalkanoate, polycaprolactone, and collagen.

[0055] At the end of the suturing operation, the second motor 5 is first started to adjust the position of the suturing mechanism 4 to correspond to the second position hole 17, and then the needle sleeve 42 is extended into the dura mater holder 19. At this time, the dura mater holder 19 is compressed by the needle sleeve 42. The dura mater holder 19 has a certain plasticity and is not easily deformed when compressed. Therefore, the suture thread 14 connected to the needle sleeve 42 can be pressed and fixed to the dura mater holder 19, and then the needle sleeve 42 is reset, and the second connecting rope 72 is pulled so that the second connecting rope 72 is torn off and separated from the end plate 20, and then the dura mater holder 19 and the end plate 20 can be detached from the protective tube 18.

[0056] The suture 14 is then manually pulled to tighten and contract the wound on the dura mater 24. The dura mater puller 19 acts as a knot to block one end of the suture 14. The needle sleeve 42 is then reset and connected to the first position hole 15. The suture needle 41 is separated from the needle sleeve 42. The first connecting rope 71 is used to pull the locking sleeve 31. The locking sleeve 31 is provided with a second perforation 32 for the suture 14 to pass through. When the locking sleeve 31 is pulled, the locking sleeve 31 moves toward the first position hole 15. The suture 14 is then cut off by the shearing effect between the second perforation 32 and the first perforation 13. After the suture 14 is cut off, the needle sleeve 42 detaches from the first position hole 15 and is restricted to the other end of the suture 14, acting as a knot. The transnasal skull base dural suture surgery is then completed. Waiting for the dura mater to be repaired, the dura mater puller 19, the end plate 20, the needle sleeve 42, and the suture 14 are naturally degraded and do not need to be removed again.

[0057] The present invention simultaneously achieves the purpose of pulling up the dura mater to facilitate suturing, suturing, adjusting the position during suturing, knotting, and degradation, is more practical, and solves the defect in the prior art that a knotting mechanism, a suturing mechanism, and an endoscope mechanism cannot be placed simultaneously on a narrow skull base.

[0058] The present invention also provides a control component 6, which includes a wristband 61 and a pull rod 62. The pull rod 62 is slidably arranged at one end of the stapler body 1 away from the end protective shell 2 and serves to pull the connecting rope component 7. The wristband 61 is fixed on the pull rod 62 for easy manual operation, and the trachea component 8 is connected to an external inflation mechanism, such as an air pump, an air bag, etc., and manual or electric methods can be selected according to actual needs, which will not be elaborated here.

Claims

1. Endoscopic transnasal skull base dura mater suture device, characterized by: include: A stapler body (1), the stapler body (1) serving as a main body support, one end surface of the stapler body (1) being provided with a first position hole (15) and a second position hole (17); An end protection shell (2) is arranged at one end of the stapler body (1) and is used to arrange a suturing mechanism (4) and a first driving mechanism; The suturing mechanism (4) comprises a suturing needle (41) and a needle sleeve (42), the suturing needle (41) is a curved needle-shaped structure, the needle sleeve (42) is detachably sleeved on a horizontal section of the suturing needle (41), and the first driving mechanism drives the suturing needle (41) and the needle sleeve (42) to rotate back and forth within a range of 90 degrees, and a suturing operation is performed during the reciprocating rotation; The locking mechanism (3) includes a locking sleeve (31) slidably arranged in the first position hole (15), the locking sleeve (31) is a cylindrical structure with one end open, and an elastic body (33) is fixedly arranged on the inner wall of the open end of the locking sleeve (31). When the needle sleeve (42) extends into the first position hole (15), the locking sleeve (31) is controlled to move in the first position hole (15). When the elastic body (33) on the locking sleeve (31) is engaged with the annular groove (44) at the outer ring of the needle sleeve (42), the needle sleeve (42) is fixed on the locking sleeve (31). After the suture needle (41) is reset, the suture needle (41) and the needle sleeve (42) are separated. An auxiliary mechanism (16), the auxiliary mechanism (16) includes a protective tube (18) slidably arranged in the second position hole (17), a dura mater (19) slidably arranged inside the protective tube (18), the dura mater (19) is a spiral structure, and an end plate (20) is fixedly arranged at one end of the dura mater (19), and the end plate (20) is slidably arranged in the protective tube (18); A connecting rope assembly (7), the connecting rope assembly (7) includes a first connecting rope (71), a second connecting rope (72) and a third connecting rope (73), the first connecting rope (71) movably passes through the suture device body (1) and is fixedly connected to the locking sleeve (31), the second connecting rope (72) movably passes through the protective tube (18) and is fixedly connected to the end plate (20), and the third connecting rope (73) movably passes through the suture device body (1) and is fixedly connected to the protective tube (18), and when the first connecting rope (71), the second connecting rope (72) and the third connecting rope (73) are pulled, the locking sleeve (31), the dura mater puller (19) and the protective tube (18) are respectively controlled to slide; A trachea assembly (8) includes a first trachea (81) and a second trachea (82), wherein the first trachea (81) is connected to the interior of a first position hole (15), and the second trachea (82) is connected to the interior of a protective tube (18). When air is ventilated into the first position hole (15) and the protective tube (18) through the first trachea (81) and the second trachea (82), respectively, the locking sleeve (31) and the dura mater holder (19) slide in opposite directions.

2. The endoscopic transnasal skull base dura mater suture device according to claim 1, characterized in that: The needle sleeve (42), suture (14), dura mater holder (19) and end plate (20) are made of any one of polylactic acid, polylactic acid-glycolic acid copolymer, polyhydroxyalkanoate, polycaprolactone and collagen.

3. The endoscopic transnasal skull base dura mater suture device according to claim 1, characterized in that: A second driving mechanism is provided inside the stapler body (1): a second motor (5), a second driving shaft (51) is fixedly connected to the rotating shaft of the second motor (5), the second driving shaft (51) is fixedly connected to the end protective shell (2), and the first position hole (15) and the second position hole (17) are distributed on a circumference around the second driving shaft (51).

4. The endoscopic transnasal skull base dura mater suture device according to claim 1, characterized in that: A control assembly (6) is provided at one end of the suture device body (1) away from the end protection shell (2), and the control assembly (6) includes a wristband (61) and a pull rod (62). The pull rod (62) is slidably arranged in the suture device body (1) and is used to pull the connecting rope assembly (7). The wristband (61) is fixedly connected to one end of the pull rod (62) extending through the outside of the suture device body (1).

5. The endoscopic transnasal skull base dura mater suture device according to claim 1, characterized in that: The outer ring of the needle sleeve (42) is provided with a thread groove (43), the locking sleeve (31) is provided with a second through hole (32), and the bottom of the suturing device body (1) is provided with a first through hole (13). The suture thread (14) used for suturing is moved through the first through hole (13) and the second through hole (32) in sequence and is engaged in the thread groove (43).

6. The endoscopic transnasal skull base dura mater suture device according to claim 1, characterized in that: A first elastic block (46) is provided at the outer ring of the suture needle (41), and a first slot (45) is provided on the inner wall of the needle sleeve (42). The first elastic block (46) is engaged in the first slot (45) to achieve relative fixation of the suture needle (41) and the needle sleeve (42).

7. The endoscopic transnasal skull base dura mater suture device according to claim 1, characterized in that: The first driving mechanism comprises a first motor (9) fixedly connected to the inner wall of the end protection shell (2); a first driving shaft (10) is fixedly connected to the rotating shaft of the first motor (9); a fixed connecting sleeve (11) is fixedly provided on the outer fixed sleeve of the first driving shaft (10); a connecting rod (12) is fixedly provided at the outer ring of the fixed connecting sleeve (11); and an end of the connecting rod (12) away from the fixed connecting sleeve (11) is connected to the suture needle (41).

8. The endoscopic transnasal skull base dura mater suture device according to claim 1, characterized in that: A first limiting ring (21) is fixedly provided on the inner wall of the opening of the protective tube (18), a second limiting ring (22) is also provided at the opening position of the second position hole (17) penetrating the end face of the suturing device body (1), and a third limiting ring (23) is fixedly provided on the outer ring of the end of the protective tube (18) away from the dura mater holder (19).

9. The endoscopic transnasal skull base dura mater suture device according to claim 1, characterized in that: The dura mater puller (19) has plasticity.

10. The endoscopic transnasal skull base dura mater suture device according to claim 1, characterized in that: The ends of the suturing needle (41) and the needle sleeve (42) are both pointed.

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