Collet assembly of an anastomosis device and dura mater anastomosis device

Abstract

The present application relates to a kind of anastomat chuck assembly and its dura mater anastomat, comprising first clamp part and the second clamp part of rotation connection with first clamp part, first clamp part is provided with the guide portion for making nail bend deformation;Second clamp part includes nailer and driving piece, nailer is rotatably connected with driving piece, and driving piece is rotatably connected with first clamp part;Driving piece can rotate relative to first clamp part under external force driving to make second clamp part close to first clamp part, and after the front end of second clamp part at least it is abutted with first clamp part, driving piece pushes nail from nailer to guide portion.It is realized to the soft tissue by driving driving piece movement to be clamped and the collaborative work of anastomosis, easy to operate, and simple structure, facilitate miniaturization, can be applied to dura mater anastomat, realize the dura mater closure of minimally invasive surgical procedure such as transnasal sphenoid approach, microchannel approach, reduce the surgical difficulty of dura mater closure in clinic, improve surgical efficiency.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more specifically, to a clamp assembly of an anastomosis device and its dura mater anastomosis device. Background Technology

[0002] Skull base surgery and micro-channel approaches are highly technical and important procedures in neurosurgery, primarily used for the treatment of pituitary tumor resection, craniocerebral trauma repair, and subdural tumor resection. During the procedure, the dura mater serves as a crucial physiological barrier separating the intracranial and extracranial spaces; its integrity directly impacts postoperative cerebrospinal fluid leakage, the control of intracranial infection risk, and the patient's overall recovery. Therefore, meticulous and reliable closure of any intraoperatively damaged dura mater is a core step in ensuring surgical success and improving patient prognosis.

[0003] Currently, the mainstream method for closing the dura mater in clinical practice is the traditional needle and suture technique. However, this technique still has significant limitations and shortcomings in practical application, mainly in the following aspects:

[0004] The procedure is complex and carries a high risk of trauma: Suture suturing requires pre-drilling holes in the skull to provide the necessary space for the suturing operation. During the procedure, repeated lifting and alignment of the dura mater edges are necessary, making the process cumbersome and time-consuming, significantly extending the surgical time and resulting in low suturing efficiency. Furthermore, this method is highly dependent on the surgeon's skill level; during suturing, there is a high risk of traction or puncture injury to the fragile dura mater and adjacent nerves, blood vessels, and other important structures, increasing the risk of intraoperative damage and postoperative complications.

[0005] Limited applicability: Existing needle and suture suturing methods are mainly suitable for dura mater closure in external access situations such as craniotomy. However, for intracranial surgeries with natural cavities such as the mouth and nose or endoscopic assistance, the narrow operating space, limited field of view, and difficulty in instrument entry and exit make it difficult for traditional suturing techniques to achieve effective dura mater closure, thus limiting their application in minimally invasive procedures. Summary of the Invention

[0006] To overcome the above-mentioned technical problems, the present invention provides a clamp assembly of an anastomosis device and its dura mater anastomosis device. By simplifying the structure, it achieves miniaturization, thereby enabling it to be used for dura mater closure in minimally invasive surgical procedures such as transsphenoidal approach and microchannel approach. Moreover, it is easy to operate and reduces the difficulty of performing dura mater closure at anatomical locations such as the skull base in clinical practice.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a clamping assembly of a fitting device, including a first clamping part and a second clamping part rotatably connected to the first clamping part, wherein the second clamping part rotates relative to the first clamping part to switch the state of the clamping assembly to a clamping state or an open state.

[0008] The first clamping part is provided with a guide part for bending and deforming the nail;

[0009] The second clamp includes a nailer and a nailing component, the nailer being rotatably connected to the nailing component, and the nailing component being rotatably connected to the first clamp.

[0010] The nailing component can rotate relative to the first clamp under external force, thereby causing the second clamp to move closer to the first clamp. After the second clamp, at least its front end, abuts against the first clamp, the nailing component pushes the nail from the nailer toward the guide.

[0011] In the above technical solution, when the clamp assembly is in the open state, when the nailing component is driven by an external force, the nailer and the nailing component as a whole rotate towards the direction of the first clamp; when the second clamp, at least its front end, abuts against the first clamp, the state of the clamp assembly switches from the open state to the clamped state; when the clamp assembly is in the clamped state, the nailing component is driven to continue moving, the nailing component rotates towards the direction of the first clamp, and pushes the nail from the nailer towards the guide portion. This invention only requires driving the nailing component to first rotate towards the first clamp together with the nailer; after the nailer is restricted by the first clamp, the nailing component continues to rotate towards the first clamp to push out the nail. The entire process uses only one power component, the nailing component, greatly simplifying the structure of the clamp assembly.

[0012] Furthermore, the nailer is provided with a nail-receiving cavity, the top wall of which has a placement groove, and the nail-driving component has a nail-driving part that at least partially passes through the placement groove to the top of the nail-receiving cavity. By accommodating the nail-driving part in the placement groove, the nail can also directly contact the inner top surface of the nail-receiving cavity to achieve stable nail placement. When the nail-driving component pushes out the nail, the nail-driving part extends from the placement groove with the rotation of the nail-driving component, abuts against the nail, and pushes the nail out of the nail-receiving cavity.

[0013] Furthermore, the nailing component has a rotating end and a pushing end at both ends. The rotating end is rotatably connected to the first clamp via a first rotating shaft, and the pushing end is rotatably connected to the nailer via a second rotating shaft. The nailing component is also equipped with a driving part, preferably located between the first and second rotating shafts. Under external force, the nailing component always rotates towards the first clamp with the first rotating shaft as its rotation point. During this process, the nailing component first drives the nailer to move closer to the first clamp. After at least the front end of the nailer abuts against the first clamp, the nailing component pushes the nail from the nailer towards the guide portion of the first clamp.

[0014] Furthermore, a reset element is installed on the second rotating shaft. This reset element is used to restore the clamping assembly from a clamped state to an open state after the external force is stopped. Preferably, the reset element is connected between the stapler and the nailing component. More preferably, the reset element is a torsion spring. When the nailing component rotates relative to the stapler (actually, the stapler rotates relative to the nailing component), the torsion spring is compressed and stores torque. When the nailing component resets, the spring force pushes the stapler to follow the nailing component back to its original position.

[0015] Furthermore, the stapler includes a connector and a staple cartridge detachably connected to the connector; the connector is rotatably connected to the nailing component; the staple receiving cavity is located within the staple cartridge. The stapler consists of a connector and a staple cartridge, with the connector rotatably connected to the nailing component, facilitating the removal and replacement of the staple cartridge for quick staple changing.

[0016] Furthermore, the nail cartridge is equipped with a nail-pressing mechanism for pressing the nails firmly into the nail-receiving cavity; the nail cartridge has a sliding cavity, and the nail-pressing mechanism is located within the sliding cavity. The nail-pressing mechanism slides within the sliding cavity and presses the nails firmly into the nail-receiving cavity, ensuring that the nails are stably stored in the nail cartridge.

[0017] Furthermore, the nail-pressing mechanism includes a nail seat, a nail-pressing member, and an elastic member; the nail seat and the nail-pressing member are slidably connected to the sliding cavity; the nail-pressing member is slidably connected to the nail seat and one end abuts against the nail seat; the other end of the nail-pressing member abuts against the elastic member. The elastic member pushes the nail-pressing member to press the nail into the nail-receiving cavity, preventing the nail from coming out of the nail cartridge.

[0018] Furthermore, the nail-pressing mechanism also includes a fastener; the nail holder is provided with a first through groove extending along the sliding direction of the nail holder and clearance portions provided on both sides; the nail-pressing component includes a nail-pressing part and support portions connected to both sides of the nail-pressing part, the nail-pressing part being provided with a second through groove; the nail-pressing part is located within the first through groove, and the support portions are located within the sliding cavity; the elastic element is cylindrical; the fastener passes through the first through groove and the second through groove and connects to the nail cartridge; the elastic element is fitted onto the fastener. The fastener allows adjustment of the preload of the elastic element, and the fastener can be tightened or loosened according to the width of the nail to achieve pressing of different nails. In addition, it can prevent the elastic force of the elastic element from pressing the nail too high, making it difficult for the nail-driving component to push the nail out.

[0019] Furthermore, the first clamping part is provided with a bent portion that bends its front end toward the second clamping part. The bent portion extends toward the stapler, causing the stapler to rotate relative to the nailing element when it moves along the bent portion, and the nailing element itself also rotates relative to the stapler, thus enabling the nailing element to eject the nail more quickly.

[0020] The present invention also provides a dura mater anastomosis device, comprising a clamping arm, a connecting rod, a driving member, a fixing member, and the aforementioned clamping head assembly. The clamping arm is fixedly connected between the fixing member and a first clamping portion. The driving member is rotatably connected to the fixing member. The connecting rod is connected between the driving member and a nailing member, and the driving member is used to drive the connecting rod to move distally, thereby causing the nailing member to rotate. Preferably, the connecting rod is rotatably connected to the nailing member via a third rotating shaft. Preferably, the third rotating shaft is located on the driving portion of the nailing member. In a direction perpendicular to the clamping arm, the third rotating shaft is located between the first rotating shaft and the second rotating shaft.

[0021] In the above technical solution, the nail is placed in the nail inserter. After the distal end of the connecting rod and clamping arm reaches the dura mater from the nasopharynx, the driving component located at the proximal end is operated to make the connecting rod move relative to the clamping arm. The connecting rod is connected to the driving part of the nail inserter. During the movement of the connecting rod, the connecting rod applies force to the driving part as the power source of the nail inserter, realizing the switching from the open state to the clamping state, and finally causing the nail in the nail inserter to be gradually pushed out and shaped by the nail inserter, thus completing the closure of the dura mater.

[0022] Furthermore, the driving member is rotatably connected to the fixing member; the connecting rod is rotatably connected to the end of the driving member; the connecting rod is parallel to the clamping arm; preferably, the fixing member is a fixed handle, and the driving member is a movable handle. By holding and pressing the driving member, the driving member rotates around the rotatable connection with the fixing member, causing the end of the driving member to swing towards the distal or proximal end, thereby driving the connecting rod to move towards the distal or proximal end.

[0023] Compared with the prior art, the beneficial effects of the present invention are: the stapler can rotate in two stages. The first stage of rotation causes the second clamp to abut against the first clamp and clamp the biological tissue. The second stage of rotation causes the stapler to push the staples in the stapler towards the first clamp. By applying an external force to a drive unit, the stapler can undergo the above two stages of movement, achieving coordinated clamping and anastomosis of soft tissue. This reduces the number of structures involved in the clamp assembly, simplifies the connection relationship, and allows for a smaller size. It can be used for dura mater closure in minimally invasive surgeries such as transsphenoidal approach and microchannel approach, and is easy to operate, reducing the difficulty of performing skull base dura mater closure in clinical practice.

[0024] When closing the dura mater using an anastomosis device, only the proximal drive component needs to be operated, eliminating the need for other operations on the anastomosis device and improving the efficiency of dura mater closure. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the clamp assembly of a matching device according to the present invention;

[0026] Figure 2 This is an exploded view of the nailing component and nailer of the present invention;

[0027] Figure 3 This is an exploded view of the nail box of the present invention;

[0028] Figure 4 This is a schematic diagram of the chuck assembly of the anastomosis device of the present invention in the released state;

[0029] Figure 5 This is a schematic diagram of the clamping state of the clamping assembly of the anastomosis device according to the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of a dura mater anastomosis device according to the present invention;

[0031] Figure 7 This is an exploded schematic diagram of a dura mater anastomosis device according to the present invention.

[0032] In the picture:

[0033] 100-First clamping part; 110-Guide part; 120-Bending part; 200-Second clamping part; 300-Nail holder; 310-Nail receiving cavity; 311-Placement slot; 320-Connector; 321-Slot; 330-Nail cartridge; 331-Sliding cavity; 332-Limiting protrusion; 340-Torsion spring mounting hole; 400-Nail driving component; 410-Nail driving part; 420-First rotating shaft; 430-Second rotating shaft Shaft; 440-Drive unit; 500-Reset component; 600-Pressing mechanism; 610-Press seat; 611-First through slot; 612-Clearing part; 620-Pressing component; 621-Pressing part; 622-Support part; 623-Second through slot; 630-Elastic component; 640-Fastener; 700-Clamping arm; 800-Connecting rod; 900-Drive unit; 1000-Fixing component; 11-Press. Detailed Implementation

[0034] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0035] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0036] The technical solution of the present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0037] Example 1

[0038] like Figure 1-5 The following is an embodiment 1 of a clamping assembly of a stapler, including a first clamping part 100 and a second clamping part 200 rotatably connected to the first clamping part 100. The second clamping part 200 rotates relative to the first clamping part 100 to switch the state of the clamping assembly to a clamping state or an open state.

[0039] The first clamping part 100 is provided with a guide part 110 for bending and deforming the nail;

[0040] The second clamping part 200 includes a nailer 300 and a nailing component 400, the nailer 300 and the nailing component 400 are rotatably connected, and the nailing component 400 is rotatably connected to the first clamping part 100.

[0041] Under external force, the nailing component 400 can rotate relative to the first clamp 100, thereby causing the second clamp 200 to move closer to the first clamp 100. After the second clamp 200, at least its front end, abuts against the first clamp 100, the nailing component 400 pushes the nail from the nailer 300 toward the guide portion 110.

[0042] In this embodiment, the stapler 300 is provided with a staple receiving cavity 310, and the top wall of the staple receiving cavity 310 is provided with a placement groove 311. The two ends of the stapler 400 are a rotating end and a pusher end, respectively. The stapler 400 is provided with a staple driving part 410 at least partially passing through the placement groove 311 to the top of the staple receiving cavity 310 at the pusher end. The rotating end is rotatably connected to the first clamping part 100 through a first rotating shaft 420, and the pusher end is rotatably connected to the stapler 300 through a second rotating shaft 430. The stapler 400 is provided with a driving part 440, which is located between the first rotating shaft 420 and the second rotating shaft 430.

[0043] The nail-driving component 400 always rotates around the first pivot 420. Driven by an external force, the nail-driving component 400 first moves the nail-attaching device 300 towards the first clamping part 100. After at least its front end of the nail-attaching device 300 abuts against the first clamping part, the nail-driving component 400 continues to rotate towards the first clamping part 100, and the nail-driving part 410 rotates from the placement slot 311 towards the first clamping part 100, thereby pushing out the nail. After at least its front end of the nail-attaching device 300 abuts against the first clamping part, the nail-attaching device 300 rotates relative to the nail-driving component 400 around the second pivot 430. The nail can be placed stably by placing the nail in the slot 311 to accommodate the nail-driving part 410, and the nail can also directly contact the inner top surface of the nail-receiving cavity 310. When the nail-driving part 400 pushes out the nail, the nail-driving part 410 extends out from the receiving part with the rotation of the nail-driving part 400 to abut against the nail and push the nail to gradually detach from the nail-receiving cavity 310.

[0044] Specifically, there are two placement slots 311, located on both sides of the inner top surface of the nail receiving cavity 310. There are also two nailing parts 410, located in the two placement slots 311 respectively. The two nailing parts 410 can apply force to both sides of the nail at the same time, so that the force is balanced during the nail being pushed out.

[0045] In this embodiment, the first clamping part 100 is provided with a clearance groove for the nailing part 400 to pass through.

[0046] In this embodiment, a reset member 500 is installed on the second rotating shaft 430. The reset member 500 is used to restore the clamping assembly from the clamped state to the open state. The reset member 500 is connected between the stapler 300 and the nailing member 400, and the reset member 500 is a torsion spring. The nailing member 400 rotates relative to the stapler 300, which is actually the stapler 300 rotating relative to the nailing member 400. When the stapler 300 rotates relative to the nailing member 400, it compresses the torsion spring. When the nailing member 400 resets, the elastic force of the torsion spring pushes the stapler 300 to reset along with the nailing member 400. Specifically, the stapler 300 is provided with a torsion spring mounting hole 340. One torsion arm of the torsion spring is connected to the torsion spring mounting hole 340, and the other torsion arm is located outside the stapler 300 and abuts against the outer surface of the stapler 300. When the nailing component 400 and the nailer 300 move relative to each other, a force is applied to the torsion spring, causing the torsion spring to deform. When the nailing component 400 returns to its original position, the force of the torsion spring will push the nailer 300 to automatically return to its original position when the nailer 300 separates from the first clamp 100.

[0047] Furthermore, the first clamping portion 100 is provided with a bending portion 120 that bends its front end toward the second clamping portion 200. The bending portion 120 extends toward the stapler 300, causing the stapler 300 to rotate relative to the nailing member 400 when it moves along the bending portion 120, and the nailing member 400 itself also rotates relative to the stapler 300, thus enabling the nailing member 400 to eject the nail more quickly.

[0048] The working principle of this embodiment is as follows: A nail is placed in the nail receiving cavity 310. When the clamp assembly is in the open state, a driving force is applied to the driving part 440, causing the driving part 440 to drive the nailing component to rotate around the first rotating shaft 420, and the nailer 300 and the nailing component 400 as a whole rotate in the direction of the first clamping part 100; when the second clamping part 200, at least its front end, abuts against the first clamping part 100, the state of the clamp assembly changes from the open state to the clamping state, at which time the soft tissue is clamped; when the clamp assembly is in the open state... In the clamping state, the drive unit 440 continues to move under the action of the drive wheel, the nailing member 400 rotates in the direction of the first clamping part 100, and at the same time the nailer 300 rotates relative to the nailing member 400 along the bending part 120. The nailing member 400 and the nailer 300 move relative to each other. The nailing part 410 of the nailing member 400, located in the receiving part, pushes the nail out from the nailer 300, and is bent and shaped by the guide part 110 on the first clamping part 100 to achieve the closure of the dura mater. In the entire process described above, only one external force needs to be applied to the drive unit 440, and only the nailing member 400 is the power component. The nailing member 400 and the nailer 300 can rotate together towards the second clamping part 200. After the nailer 300 is restricted by the second clamping part 200, the nailing member 400 continues to rotate and pushes out and shapes the nail through the relative movement of the nailer 300.

[0049] The beneficial effects of this embodiment are as follows: The stapler 400 can rotate in two stages. The first stage of rotation causes the second clamping part 200 to abut against and clamp the biological tissue with the first clamping part 100. The second stage of rotation is a continued rotation relative to the first clamping part 100. At the same time, the stapler 300 rotates around the stapler 400, allowing the stapler 400 to push out the staples inside the stapler 300. By applying an external force to a drive unit 440, the stapler 400 can undergo the above two stages of movement, achieving coordinated operation of clamping and anastomosis of soft tissue. This reduces the number of structures involved in the clamp assembly, simplifies the connection relationship, and allows for a smaller size. It can be used for dura mater closure via the transsphenoidal approach, and the operation is simple, reducing the difficulty of performing skull base dura mater closure in clinical practice.

[0050] Example 2

[0051] A second embodiment of a clamp assembly for an anastomosis device differs from embodiment 1 in that:

[0052] The stapler 300 includes a connector 320 and a staple cartridge 330 detachably connected to the connector 320; the connector 320 is rotatably connected to the staple driver 400; the staple receiving cavity 310 is located inside the staple cartridge 330. The stapler 300 consists of a connector 320 and a staple cartridge 330. The connector 320 is rotatably connected to the staple driver 400, which facilitates the removal and replacement of the staple cartridge 330 for quick staple replacement.

[0053] The nail magazine 330 is provided with a sliding cavity 331, and a nail clamping mechanism 600 for pressing nails into the nail receiving cavity 310 is installed inside the nail magazine 330. The nail clamping mechanism 600 is located within the sliding cavity 331. The nail clamping mechanism 600 includes a nail seat 610, a nail clamping member 620, and an elastic member 630; the nail seat 610 and the nail clamping member 620 are slidably connected to the sliding cavity 331; the nail clamping member 620 is slidably connected to the nail seat 610 and one end abuts against the nail seat 610; the other end of the nail clamping member 620 abuts against the elastic member 630. The elastic member 630 pushes the nail clamping member 620 to press the nail into the nail receiving cavity 310, preventing the nail from coming out of the nail magazine 330.

[0054] The nail clamping mechanism 600 of this embodiment may further include a fastener 640; the nail holder 610 is provided with a first through groove 611 extending along the sliding direction of the nail holder 610 and clearance portions 612 provided on both sides; the nail clamping member 620 includes a nail clamping part 621 and a support part 622 connected to both sides of the nail clamping part 621, the nail clamping part 621 is provided with a second through groove 623; the nail clamping part 621 is located in the first through groove 611, and the support part 622 is located in the sliding cavity 331; the elastic member 630 is cylindrical and may be a spring; the fastener 640 passes through the first through groove 611 and the second through groove 623 and is connected to the nail box 330; the elastic member 630 is fitted onto the fastener 640. The fastener 640 can adjust the preload of the elastic member 630, and the fastener 640 can be tightened or loosened according to the width of the nail to achieve clamping of different nails. In addition, it can prevent the elastic element 630 from having too much spring force to clamp the nail, making it difficult for the nail-driving element 400 to push the nail out.

[0055] In this embodiment, the connector 320 and the nail cartridge 330 are detachably slidably connected via a dovetail groove and a dovetail block. When the nail cartridge 330 abuts against the bent portion 120, the direction of force is perpendicular or nearly perpendicular to the sliding direction between the nail cartridge 330 and the connector 320. Therefore, the nail cartridge 330 can drive the connector 320 to rotate without disengaging. When the nail cartridge 330 needs to be replaced, it can be quickly replaced by sliding it out. The surface of the nail cartridge 330 is provided with a limiting protrusion 332, and the connector 320 is provided with a slot 321 that engages with the limiting protrusion 332. After the limiting protrusion 332 and the slot 321 are engaged, they restrict the installation position of the connector 320 and the nail cartridge 330.

[0056] The remaining working principles and effects of this embodiment are the same as those of Embodiment 1.

[0057] Example 3

[0058] like Figure 6-7The illustration shows an embodiment of a dura mater anastomosis device, comprising a clamping arm 700, a connecting rod 800, a driving member 900, a fixing member 1000, and a clamping head assembly as described in Embodiments 1 and 2. The clamping arm 700 is fixedly connected between the fixing member 1000 and the first clamping portion 100. The driving member 900 is rotatably connected to the fixing member 1000. The connecting rod 800 is connected between the driving member 900 and the nailing member 400, and the driving member 900 is used to drive the connecting rod 800 to move distally, thereby causing the nailing member 400 to rotate. Preferably, the connecting rod 800 is rotatably connected to the nailing member 400 via a third rotating shaft, the third rotating shaft being located on the driving portion 440 of the nailing member 400. Preferably, in a direction perpendicular to the clamping arm 700, the third rotating shaft is located between the first rotating shaft 420 and the second rotating shaft 430.

[0059] The driving component 900 is rotatably connected to the fixed component 1000 via a fourth rotating shaft 910; the connecting rod 800 is rotatably connected to the end of the driving component 900; the connecting rod 800 is parallel to the clamping arm 700; preferably, the fixed component 1000 is a fixed handle, and the driving component 900 is a movable handle. By holding and pressing the driving component 900, the driving component 900 rotates around the rotatable connection with the fixed component 1000, causing the end of the driving component 900 to swing to the distal or proximal end, thereby driving the connecting rod 800 to move to the distal or proximal end.

[0060] The working principle of this embodiment is as follows: A nail is placed in the nail holder 300. After the distal ends of the connecting rod 800 and the clamping arm 700 reach the dura mater via the transsphenoidal route, the driving member 900 located at the proximal end is operated to move the connecting rod 800 relative to the clamping arm 700. The connecting rod 800 is connected to the driving part 440 of the nail-driving member 400. During the movement of the connecting rod 800, the connecting rod 800 applies force to the driving part 440 as the power source of the nail-driving member 400, realizing the switching from the open state to the clamping state, and finally causing the nail in the nail holder 300 to be gradually pushed out and shaped by the nail-driving member 400, thus completing the closure process of the dura mater.

[0061] The beneficial effects of this embodiment are as follows: When closing the dura mater using the anastomosis device, only the proximal drive unit 900 needs to be operated, eliminating the need for other operations on the anastomosis device, thus improving the efficiency of dura mater closure. The nail-driving unit 400 pushes out the nail by rotation. The nail-driving unit 400 does not require a large torque or a long stroke, allowing for a smaller diameter of the connecting rod 800 and a smaller volume of the second clamping part 200, making it easier to insert into the skull base via the mouth or nose, and providing ample operating space.

[0062] Other technical features, working principles, and effects of this embodiment are the same as those of Embodiment 1 or Embodiment 2.

[0063] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A clamp assembly for a matching device, characterized in that, It includes a first clamping part (100) and a second clamping part (200) rotatably connected to the first clamping part (100). The second clamping part (200) rotates relative to the first clamping part (100) to switch the state of the clamping assembly to a clamping state or an open state. The first clamping part (100) is provided with a guide part (110) for bending and deforming the nail. The second clamp (200) includes a nailer (300) and a nailing element (400), the nailer (300) being rotatably connected to the nailing element (400), and the nailing element (400) being rotatably connected to the first clamp (100); The two ends of the nailing component (400) are a rotating end and a nail-pushing end, respectively. The rotating end is rotatably connected to the first clamp (100) through a first rotating shaft (420), and the nail-pushing end is rotatably connected to the nailer (300) through a second rotating shaft (430). The nailing component (400) is provided with a driving part (440), which is located between the first rotating shaft (420) and the second rotating shaft (430). The nailing component (400) always rotates around the first pivot (420). Under the drive of external force, the nailing component (400) first drives the nailer (300) to move together toward the first clamp (100). When the nailer (300) at least its front end abuts against the first clamp (100), the nailing component (400) continues to rotate toward the first clamp (100) and pushes the nail from the nailer (300) toward the guide (110).

2. The clamp assembly of the anastomosis device according to claim 1, characterized in that, The nailer (300) is provided with a nail-receiving cavity (310), and the top wall of the nail-receiving cavity (310) is provided with a placement groove (311). The nailing component (400) is provided with a nailing part (410) that passes through the placement groove (311) to the top of the nail-receiving cavity (310).

3. The clamp assembly of the anastomosis device according to claim 1, characterized in that, A reset member (500) is installed on the second rotating shaft (430), the reset member (500) being used to restore the chuck assembly from the clamped state to the open state.

4. The clamp assembly of the anastomosis device according to claim 3, characterized in that, The reset member (500) is connected between the nailer (300) and the nailing member (400).

5. The clamp assembly of the anastomosis device according to claim 3, characterized in that, The reset element (500) is a torsion spring.

6. The clamp assembly of the anastomosis device according to claim 2, characterized in that, The nailer (300) includes a connector (320) and a nail cartridge (330) detachably connected to the connector (320); the connector (320) is rotatably connected to the nailing component (400); the nail receiving cavity (310) is located inside the nail cartridge (330).

7. The clamp assembly of the anastomosis device according to claim 6, characterized in that, The nail cartridge (330) is equipped with a nail pressing mechanism (600) for pressing nails into the nail receiving cavity (310); the nail cartridge (330) is provided with a sliding cavity (331), and the nail pressing mechanism (600) is located in the sliding cavity (331).

8. The clamp assembly of the anastomosis device according to claim 7, characterized in that, The nail pressing mechanism (600) includes a nail seat (610), a nail pressing member (620), and an elastic member (630); the nail seat (610) and the nail pressing member (620) are slidably connected to the sliding cavity (331); the nail pressing member (620) is slidably connected to the nail seat (610) and one end abuts against the nail seat (610); the other end of the nail pressing member (620) abuts against the elastic member (630).

9. The clamp assembly of the anastomosis device according to any one of claims 1-8, characterized in that, The first clamp (100) is provided with a bent portion (120) that bends its front end toward the second clamp (200).

10. A dura mater anastomosis device, characterized in that, The device includes a clamping arm (700), a connecting rod (800), a driving member (900), a fixing member (1000), and a clamping assembly as described in any one of claims 1-9. The clamping arm (700) is fixedly connected between the fixing member (1000) and the first clamping part (100). The driving member (900) is rotatably connected to the fixing member (1000). The connecting rod (800) is connected between the driving member (900) and the nailing member (400). The driving member (900) is used to drive the connecting rod (800) to move to the distal end, thereby causing the nailing member (400) to rotate.

11. The dura mater anastomosis device according to claim 10, characterized in that, The connecting rod (800) is rotatably connected to the nailing component (400) via a third pivot.

12. The dura mater anastomosis device according to claim 10, characterized in that, The driving member (900) is rotatably connected to the fixing member (1000); the connecting rod (800) is rotatably connected to the end of the driving member (900); the connecting rod (800) is parallel to the clamping arm (700).

13. The dura mater anastomosis device according to claim 12, characterized in that, The fixing component (1000) is a fixed handle, and the driving component (900) is a movable handle.

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