A nailing device for a screwless nailing rod system and a method of use thereof

Abstract

The present invention discloses a nailing device for a screwless nail rod system and a method for using the nailing device. The nailing device includes a movable mechanism that is detachably connected to a ball stud to be inserted into a body and a nail seat; the movable mechanism includes a core rod extending in a first direction; a limiting mechanism includes a first limiting mechanism and a second limiting mechanism. The first limiting mechanism is provided on both sides of the core rod in a second direction and is relatively fixedly connected to the core rod; the second limiting mechanism is provided on both sides of the core rod in a third direction, one end of which is pivotally connected to the core rod for relative movement and the other end of which is detachably connected to the nail seat; the second limiting mechanism has a track running through the second direction, the first limiting mechanism is provided with a first connecting rod that passes through the track and connects to the first limiting mechanism disposed opposite thereto; the first limiting mechanism drives the first connecting rod to move between a first position and a second position in the track, thereby changing the opening angle of the second limiting mechanism. The present invention can quickly and stably fix the ball stud on a cone.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and more particularly to a nailing device for a screwless nail rod system and a method of using the same. Background Art

[0002] Traditional posterior nail-rod fixing structures have the problem of small screw plugs and difficulty in installation. Furthermore, the screw seat is large, which interferes with and damages soft tissues and requires a long recovery period. Therefore, a more stable, smaller, and less prone to interference and damage posterior nail-rod fixing structure is needed. To address this issue, the prior art proposes a new posterior nail-rod fixing structure. By combining the nail seat with the U-shaped retaining rod slot, the ball-head nail can swing flexibly over a wide range of angles. When tightening, it is directly pressed into the groove of the U-shaped retaining rod without the need to tighten the screw plug.

[0003] However, it is difficult to install such ball-head nails, and there is an urgent need for a nailing device to quickly and effectively implant such ball-head nails into the tissue of the cone. Summary of the Invention

[0004] The present application is proposed based on the above-mentioned requirements of the prior art. The technical problem to be solved by the present application is to provide a nailing device for a screwless nail rod system and a method of use to quickly and stably fix the ball nail on the cone.

[0005] In order to solve the above problems, this application is implemented by adopting the following technical solutions:

[0006] A nailing device for a screwless nail rod system is provided, comprising: a moving mechanism, which is detachably connected to a ball-head nail and a nail seat to be inserted into a body; the moving mechanism includes a core rod, which extends along a first direction; the ball-head nail is connected to the nail seat; a limiting mechanism, comprising a first limiting mechanism and a second limiting mechanism, the first limiting mechanism being arranged on both sides of the core rod in the second direction, the first limiting mechanism being relatively fixedly connected to the core rod to follow the movement of the core rod; the second limiting mechanism being arranged on both sides of the core rod in the third direction, one end of the second limiting mechanism being pivotally connected to the core rod for relative movement, and the other end being detachably connected to the nail seat detachable connection; the second limiting mechanism has a track running through the second direction, and the first limiting mechanism is provided with a first connecting rod, which passes through the track and is connected to the first limiting mechanism arranged relatively; the first limiting mechanism drives the first connecting rod to move between the first position and the second position in the track to drive the second limiting mechanism to move closer to or away from the direction of the core rod, changing the opening angle of the second limiting mechanism; when the first limiting mechanism is in the first position, the second limiting mechanism is at the maximum opening angle; when the first limiting mechanism is in the second position, the second limiting mechanism is at the minimum opening angle, and the core rod is relatively fixed to the ball head nail and the nail seat.

[0007] The first limiting mechanism, connected to the nail base, limits relative movement of the ball stud, nail base, and core rod in the second direction, allowing for quick positioning of the second limiting mechanism. The second limiting mechanism, connected to the nail base, limits relative movement of the ball stud, nail base, and core rod in the third direction. The first and second limiting mechanisms work together to achieve relative fixation of the ball stud, nail base, and core rod. This fixing method is simple to operate, saves time and effort, and allows for quick and stable fixing of the ball stud to the cone.

[0008] Optionally, the moving mechanism includes a fixed sleeve and a rotating member; one end of the fixed sleeve is fixedly connected to the second limiting mechanism, and the other end is threadedly connected to the rotating member; the core rod passes through the fixed sleeve and is fixedly connected to the rotating member.

[0009] With this arrangement, when the rotating member rotates along the thread, the fixed sleeve and the rotating member produce relative displacement, thereby driving the core rod to move. The rotation drives the core rod to move linearly, making the core rod move smoothly and convenient for user operation.

[0010] Optionally, a mating groove is provided on the core rod; the first limiting mechanism includes a first protrusion, which extends from the inner wall of the mating groove in a direction away from the bottom of the mating groove; one end portion of the second limiting mechanism is located in the mating groove, and when the core rod moves, the mating groove is driven to move, so that the second limiting mechanism and the mating groove produce relative displacement.

[0011] With this arrangement, when the core rod moves, the first connecting rod of the first limiting mechanism applies a thrust toward or away from the mating groove to the inner wall of the track, pushing the second limiting mechanism to move toward or away from the mating groove, and controlling the opening angle of the first limiting mechanism to adapt to different nail seats.

[0012] Optionally, the first limiting mechanism includes a second protrusion, which is provided at the end of the core rod connected to the nail seat, and the two second protrusions are symmetrically arranged in the second direction; the nail seat has a first matching piece, and the second protrusion is adapted to the first matching piece.

[0013] With this arrangement, the second protrusion and the first matching piece can be quickly aligned, thereby increasing the nailing speed.

[0014] Optionally, the second limiting mechanism includes a first plate and a bending portion, the first plate is arranged above the mating groove, has the same extension direction as the mating groove, and is at least partially located in the mating groove; the bending portion is arranged at the end of the first plate close to the nail seat, the bending portion has a protrusion, and the protrusion is arranged toward the direction of the nail seat; the nail seat has a second mating piece, and the protrusion is adapted to the second mating piece.

[0015] With this arrangement, the bent portion and the first plate form a concave area, which provides space for the second limiting mechanism to move, thereby preventing obstruction of the connection between the second limiting mechanism and the nail seat. As the core rod moves, the area of ​​the side of the first plate adjacent to the mating groove that enters the mating groove gradually increases, ensuring smooth movement of the second limiting mechanism.

[0016] Optionally, the track has an extension component in a direction away from the mating groove and an extension component opposite to the extension direction of the core rod; the track includes a first track and a second track, the first track is arranged close to the mating groove, the second track is arranged away from the mating groove, the first track is connected to the second track, and the connection position is arranged at an angle.

[0017] With this arrangement, when the first connecting rod moves on the first track and the second track respectively, it plays a role in fine-tuning the opening angle of the second limiting mechanism. When the first connecting rod transitions from the first track to the second track, the opening angle of the second limiting mechanism can be quickly adjusted.

[0018] Optionally, the fixed sleeve includes a middle sleeve, the middle sleeve has a first through space for the core rod to pass through, and both ends of the core rod are exposed outside the middle sleeve; the middle sleeve has a second gap running through the third direction at one end close to the nail seat, and the second gap is opposite to the matching groove; the second limiting mechanism is partially inserted in the second gap and the matching groove; the second limiting mechanism is provided with a second connecting rod, the second connecting rod passes through the second limiting mechanism, and is fixedly connected to the middle sleeve.

[0019] With this arrangement, by providing the middle sleeve, on the one hand, the stability of the second limiting mechanism during movement is enhanced; on the other hand, when the second limiting mechanism is in the second position, the second limiting mechanism is prevented from being exposed outside the fixed sleeve, thereby reducing the contact area of ​​the soft tissue in front of the vertebral body and avoiding scratching of the human soft tissue as much as possible.

[0020] Optionally, the outer wall of the middle sleeve is provided with a third protrusion, the third protrusion is provided with a third track extending along the first direction, and the third track passes through the inner and outer walls of the middle sleeve; the core rod is provided with a second opening and a third connecting rod, the second opening is arranged opposite to the third track, the third connecting rod passes through the third track and the second opening, and is fixedly connected to the core rod at the second opening.

[0021] When the core rod moves, it drives the third connecting rod to move in the third track, and by limiting the moving distance of the third connecting rod, the purpose of limiting the moving distance of the core rod is achieved.

[0022] Optionally, the rotating member has a through hole passing through in a first direction, and the end of the middle sleeve away from the limiting mechanism is in the through hole and is threadedly connected to the rotating member; the inner wall of the through hole is protrudingly provided with a first blocking member and a second blocking member surrounding the core rod, the first blocking member is connected to the middle sleeve, and the second blocking member is fitted with the core rod; there is a recessed space between the first blocking member and the second blocking member; a second blocking ring is provided on the core rod, the second blocking ring is adapted to the recessed space, and the second blocking ring is installed in the recessed space.

[0023] With this arrangement, the rotating member and the core rod are stably fixed relative to each other.

[0024] Provided is a method for using a nail driver for a screwless nail rod system. Using the nail driver for a screwless nail rod system comprises: controlling a core rod to drive a first limiting mechanism to move in the direction of a first position, so that a second limiting mechanism is opened; connecting the core rod to a ball nail, and connecting the first limiting mechanism to a nail seat; controlling the core rod to drive the first limiting mechanism to move in the direction of a second position, until the second limiting mechanism is connected to the nail seat, thereby achieving relative fixation of the core rod, the ball nail, and the nail seat; and rotating the core rod to insert the ball nail into a cone.

[0025] Compared to existing technologies, the present invention provides a nailing device and method for a screwless nailing system. Through the cooperation of a first and second limiting mechanisms, the ball stud, nail holder, and core rod are relatively fixed. This fixing method is simple to operate, saves time and effort, and can quickly and stably secure the ball stud to the cone. The rotating member and fixing sleeve allow the core rod to move and rotate stably, improving stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this specification. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0027] Figure 1 This is a schematic diagram of the connection between a nail driver, a ball stud, and a nail seat for a screwless nail rod system provided by this embodiment;

[0028] Figure 2 1 is a structural schematic diagram of a nailing device for a screwless nail rod system provided by this embodiment;

[0029] Figure 3 is a cross-sectional view of a nailing device for a screwless nail rod system provided by this embodiment;

[0030] Figure 4 is a first stereoscopic view of a ball stud provided by this embodiment;

[0031] Figure 5 is a second stereoscopic view of a ball stud provided in this embodiment;

[0032] Figures 6-11 This is a partial structural diagram of a nailing device for a screwless nail rod system provided by this embodiment;

[0033] Figure 12 1 is a structural schematic diagram of a second limiting mechanism of a nailing device for a screwless nail rod system provided by this embodiment;

[0034] Figure 13 The figure is a schematic structural diagram of a rotating part in a nailing device for a screwless nail rod system provided by this embodiment. Description of the drawings:

[0036] 1-Ball stud; 2-Nail seat; 210-First mating piece; 220-Second mating piece; 3-Core rod; 300-Screwdriver head; 310-Rod; 311-Pin; 4-Matching groove; 5-First limiting mechanism; 500-First protrusion; 510-Second protrusion; 6-First connecting rod; 7-First opening; 8-Second limiting mechanism; 800-First plate; 810-Bend; 9-Rail; 900-First rail; 910-Second rail; 10-First gap; 110- Middle sleeve; 111-outer sleeve; 12-second slit; 13-first through-hole; 14-second through-hole; 15-second connecting rod; 16-third protrusion; 17-third track; 18-second opening; 19-third connecting rod; 20-protrusion; 21-first retaining ring; 22-fourth protrusion; 23-first retaining ring; 24-rotating member; 25-through-hole; 26-annular groove; 27-second retaining ring; 28-second retaining ring; 29-third retaining ring; 30-third retaining ring; 31-second thread. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0038] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the term "connected" should be understood in a broad sense. For example, it can mean a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0039] The terms "top," "bottom," "above," "below," and "on" used throughout the description refer to relative positions of components of a device, such as the relative positions of top and bottom substrates within a device. It will be understood that devices are multifunctional regardless of their orientation in space.

[0040] To facilitate understanding of the embodiments of the present application, further explanation will be given below with reference to specific embodiments in conjunction with the accompanying drawings. The embodiments do not constitute a limitation of the present invention.

[0041] This embodiment provides a nailing device for a screwless nail rod system, such as Figure 1-Figure 3 As shown, the nailing device includes:

[0042] The moving mechanism is detachably connected to the ball stud 1 and the nail seat 2 to be inserted into the body, and controls the ball stud 1 to move into the cone. The ball stud 1 is used to fix the cone during the posterior nail rod fixation surgery. Figure 4 and Figure 5 As shown, the proximal end of the ball stud 1 is a pointed end for easy insertion; the surface near the proximal end of the ball stud 1 is provided with threads to enhance the fixing force. The distal end of the ball stud 1 is a sphere. The proximal end is the end close to the cone, and the distal end is the end away from the cone. The nail seat 2 is connected to the ball stud 1 and has a accommodating space that runs through the first direction. The distal end of the ball stud 1 is arranged in the accommodating space, and the remaining part is exposed outside the accommodating space; the ball stud 1 cooperates with the nail seat 2 so that the ball stud 1 can swing freely within a certain angle range to adapt to the physiological curvature and movement of the spine.

[0043] The moving mechanism includes a core rod 3 , which extends along a first direction and can be fixed relative to the ball stud 1 and the stud seat 2 .

[0044] like Figure 6 and Figure 7As shown, the core rod 3 includes a screwdriver head 300 and a rod portion 310. One end of the screwdriver head 300 is connected to the ball stud 1, and the other end is connected to the rod portion 310. Specifically, the distal end of the ball stud 1 is provided with a first groove, which is adapted to one end of the screwdriver head 300. The end of the rod portion 310, closer to the screwdriver head 300, is provided with a second groove, and the other end of the screwdriver head 300 is adapted to and inserted into the second groove. During use, the end of the screwdriver head 300 adapted to the first groove enters the receiving space and is inserted into the first groove, allowing the movable mechanism to drive the ball stud 1 to rotate. With this arrangement, different ball studs 1 can be connected to different core rods 3 simply by replacing the screwdriver head 300. In addition, the middle portion of the screwdriver bit 300 protrudes from the end portion of the screwdriver bit 300 connected to the rod portion 310, and the protruding portion contacts the end surface of the rod portion 310 to prevent the screwdriver bit 300 from moving in the extension direction of the rod portion 310. In this embodiment, the screwdriver bit 300 and the rod portion 310 can also be fixedly connected by a pin 311.

[0045] The rod 310 is provided with a matching groove 4 at the end close to the screwdriver head 300 . The matching groove 4 extends along a first direction. Two matching grooves 4 are symmetrically arranged on both sides of the rod 310 in a third direction. Preferably, the third direction is perpendicular to the first direction.

[0046] The core rod 3 is provided with a limiting mechanism, which cooperates with the matching groove 4 to achieve relative fixation of the ball stud 1 and the stud seat 2.

[0047] The limiting mechanism includes a first limiting mechanism 5 and a second limiting mechanism 8 .

[0048] The first limiting mechanism 5 is provided on both sides of the core rod 3 in the second direction, and is relatively fixedly connected to the core rod 3 so as to move along with the core rod 3 .

[0049] like Figure 8 and Figure 9 As shown, the first limiting mechanism 5 includes a first protrusion 500, which extends along the inner wall of the mating groove 4 in a direction away from the bottom of the mating groove 4. The two first protrusions 500 are symmetrically arranged on both sides of the mating groove 4 in the second direction. The first limiting mechanism 5 is provided with a first connecting rod 6, and the two ends of the first connecting rod 6 are connected to the oppositely arranged first protrusions 500. Exemplarily, the first protrusion 500 has a first opening 7 that runs through the second direction. The first opening 7 is adapted to the first connecting rod 6. The two ends of the first connecting rod 6 pass through the first openings 7 of the two first protrusions 500 and are fixedly connected by laser welding.

[0050] The first limiting mechanism 5 includes a second protrusion 510 extending from the end face of the rod 310 connected to the screwdriver bit 300 in a direction opposite to the extension direction of the rod 310. The two second protrusions 510 are symmetrically arranged in the second direction, forming a groove-shaped space with the end face of the core rod 3. The nail holder 2 has a first mating piece 210 that matches the second protrusion 510. During the connection between the nail holder 2 and the first limiting mechanism 5, the second protrusion 510 is placed within the first mating piece 210 to determine the connection position between the second limiting mechanism 8 and the nail holder 2. In this embodiment, the first mating piece 210 is groove-shaped.

[0051] Preferably, the second protrusion 510 is provided with both ends in the second direction protruding from the first protrusion 500, and the second protrusion 510 and the first protrusion 500 are connected by an inclined surface. This arrangement facilitates the operator to align the second protrusion 510 with the first mating member 210 more quickly.

[0052] The second limiting mechanism 8 is provided on both sides of the core rod 3 in the third direction, one end of which is pivotally connected to the core rod 3 for relative movement, and the other end of which is detachably connected to the nail seat 2 .

[0053] The length of the second limiting mechanism 8 in the second direction is adapted to the length of the matching groove 4 in the second direction. The end of the second limiting mechanism 8 away from the screwdriver head 300 is at least partially located in the matching groove 4, and the end close to the screwdriver head 300 is detachably connected to the nail seat 2.

[0054] like Figure 7 As shown, the second limiting mechanism 8 includes a first plate 800 and a bent portion 810. The first plate 800 is disposed above the mating slot 4, extending in the same direction as the mating slot 4 and at least partially within the mating slot 4. The bent portion 810 is disposed at the end of the first plate 800 near the screwdriver bit 300, forming a concave area with the first plate 800. This concave area provides space for the second limiting mechanism 8 to move, thereby preventing obstruction of the connection between the second limiting mechanism 8 and the nail base 2. The bent portion 810 includes a protrusion, which is disposed toward the nail base 2 and mates with the second mating member 220 on the nail base 2. Preferably, the second mating member 220 is slot-shaped, with its opening facing away from the nail base 2. When the second limiting mechanism 8 is connected to the nail base 2, the protrusion is seated within the second mating member 220 on the nail base 2, securing the core rod 3 relative to the ball stud 1 and the nail base 2. As the core rod 3 moves, the area of ​​the side of the first plate 800 close to the matching groove 4 entering the matching groove 4 gradually increases, thereby improving stability during the movement.

[0055] The second limiting mechanism 8 has a track 9 that runs through the second direction. The track 9 is at least partially located in the first gap 10 between the two first protrusions 500, and the first connecting rod 6 passes through the track 9 and can move in the track 9. The track 9 has an extension component in the direction away from the matching groove 4 and an extension component opposite to the extension direction of the core rod 3. During the movement of the first limiting mechanism 5 toward the direction close to the ball stud 1, the first connecting rod 6 of the first limiting mechanism 5 provides a thrust in the direction of the matching groove 4 on the inner wall of the track 9, pushing the second limiting mechanism 8 to move in the direction of the matching groove 4, thereby controlling the opening angle of the first limiting mechanism 5. Similarly, during the movement of the first limiting mechanism 5 toward the direction away from the ball stud 1, the first connecting rod 6 of the first limiting mechanism 5 applies a thrust in the direction away from the matching groove 4 on the inner wall of the track 9, pushing the second limiting mechanism 8 to move in the direction away from the matching groove 4.

[0056] like Figure 12 As shown, the track 9 is provided with a first position and a second position. When the core rod 3 moves, the first limiting mechanism 5 is driven to move between the first and second positions in the track 9, controlling the second limiting mechanism 8 to move closer to or further away from the core rod 3, thereby changing the opening angle of the second limiting mechanism 8. When the first limiting mechanism 5 is in the first position, the second limiting mechanism 8 is at its maximum opening angle, the bent portion 810 is outside the nail seat 2, and the area of ​​the first plate 800 covered by the mating groove 4 is minimal throughout the entire process. When the first limiting mechanism 5 is in the second position, the second limiting mechanism 8 is at its minimum opening angle, the first limiting mechanism 5 is connected to the first mating member 210, the second limiting mechanism 8 is connected to the second mating member 220, and the core rod 3 is relatively fixed to the ball stud 1 and the nail seat 2. Specifically, the protrusion is inserted into the second mating member 220 on the nail seat 2, and the side of the first plate 800 adjacent to the mating groove 4 is completely located within the mating groove 4.

[0057] Furthermore, the track 9 includes a first track 900 and a second track 910, wherein the first track 900 is arranged close to the matching groove 4, and the second track 910 is arranged away from the matching groove 4, the first track 900 is connected to the second track 910, and the connection position is arranged at an angle. Preferably, the first track 900 is parallel to the second track 910, and is parallel to the side of the first plate 800 close to the matching groove 4. When the first connecting rod 6 moves on the first track 900 and the second track 910 respectively, it plays a role in fine-tuning the opening angle of the second limiting mechanism 8. When the first connecting rod 6 transitions from the first track 900 to the second track 910, the opening angle of the second limiting mechanism 8 can be quickly adjusted. By being arranged in parallel, the opening angle of the second limiting mechanism 8 can be evenly changed.

[0058] The moving mechanism includes a fixed sleeve and a rotating member 24 . One end of the fixed sleeve is fixedly connected to the second limiting mechanism 8 , and the other end is threadedly connected to the rotating member 24 . The core rod 3 passes through the fixed sleeve and is fixedly connected to the rotating member 24 .

[0059] like Figure 9 and Figure 10 As shown, the fixed sleeve includes a middle sleeve 110 having a first through-space for the core rod 3 to pass through, with both ends of the core rod 3 exposed outside the middle sleeve 110. The middle sleeve 110 is fixedly connected to the end of the second limiting mechanism 8 away from the screwdriver bit 300. For example, the end of the middle sleeve 110 near the screwdriver bit 300 has a second slit 12 extending in a third direction. The second limiting mechanism 8 is inserted between the first slit 10 and the second slit 12, at least partially covering the first plate 800. The middle sleeve 110 has first through-holes 13 on either side of the second slit 12, and the second limiting mechanism 8 has a second through-hole 14, the first through-hole 13 and the second through-hole 14 being arranged opposite each other. A second connecting rod 15 passes through the first through-hole 13 and the second through-hole 14. The second connecting rod 15 is fixed relative to the middle sleeve 110 by laser welding or other means, thereby achieving a fixed connection between the middle sleeve 110 and the end of the second limiting mechanism 8 away from the screwdriver bit 300. When the first limiting mechanism 5 is located at the second position, the first plate 800 located in the first gap 10 and the second gap 12 is completely covered.

[0060] The outer wall of the middle sleeve 110 is provided with a third protrusion 16, which is provided with a third track 17 extending in a first direction. The third track 17 passes through the inner and outer walls of the middle sleeve 110. The core rod 3 is provided with a second opening 18 and a third connecting rod 19. The second opening 18 is arranged opposite the third track 17. The third connecting rod 19 is adapted to fit within the second opening 18, passes through the third track 17 and the second opening 18, and is fixedly connected to the core rod 3 at the second opening 18. When the core rod 3 moves, it drives the third connecting rod 19 to move within the third track 17. By limiting the movement distance of the third connecting rod 19, the movement distance of the core rod 3 is limited.

[0061] like Figure 4As shown, the fixed sleeve includes an outer sleeve 111, which has a second through-space. The middle sleeve 110 passes through the second through-space, and both ends of the core rod 3 are exposed outside the outer sleeve 111. The outer sleeve 111 is relatively fixed to the middle sleeve 110. For example, the outer wall of the middle sleeve 110 is provided with a protrusion 20, which is connected to the inner wall of the second through-space near the limiting mechanism. A first retaining ring 21 is provided at the end of the second through-space away from the limiting mechanism. The inner wall of the outer sleeve 111 is provided with a fourth protrusion 22. The fourth protrusion 22 is adapted to the recessed space formed by the third protrusion 16 and the first retaining ring 21 to limit the relative position of the middle sleeve 110 and the outer sleeve 111. Furthermore, a first retaining ring 23 is provided in the second through-space, and the first retaining ring 23 is located on the side of the first retaining ring 21 away from the limiting mechanism.

[0062] like Figure 13 As shown, the rotating member 24 has a through hole extending in a first direction. The end of the middle sleeve 110, away from the limiting mechanism, is located within the through hole and is threadedly connected to the rotating member 24. Specifically, a first thread is provided on the inner surface of the through hole, and a second thread 31 is provided on the outer surface of the middle sleeve 110. The first thread 31 is adapted to mate with the second thread 31. When the rotating member 24 rotates, the rotating member 24 and the middle sleeve 110 generate relative displacement.

[0063] The rotating member 24 is provided with an annular groove, and the end of the outer sleeve 111 away from the limiting mechanism is inserted into the annular groove. When the rotating member 24 rotates, the rotating member 24 moves relative to the outer sleeve 111.

[0064] The core rod 3 extends through the through hole and is fixedly connected to the rotating member 24. For example, the inner wall of the through hole has an annular groove. The core rod 3 is provided with a second retaining ring 17, which fits within the annular groove. When the rotating member 24 and the middle sleeve 110 are relatively displaced, the movement of the annular groove drives the movement of the second retaining ring 17, causing the core rod 3 to follow the movement of the second retaining ring 17.

[0065] Furthermore, if Figure 11 As shown, a second retaining ring 28 is provided inside the second retaining ring 17 , and the second retaining ring 28 is squeezed by the second retaining ring 17 and the core rod 3 , thereby preventing the second blocking member and the core rod 3 from relative displacement and improving the stability of the connection between the rotating member 24 and the core rod 3 .

[0066] Furthermore, a third retaining ring 29 is provided on the core rod 3. The third retaining ring 29 is located on the side away from the middle sleeve 110, and the outer wall of the third retaining ring 29 is in contact with the inner wall of the through hole. The annular groove-shaped space protrudes away from the outer wall of the middle sleeve 110, and the protruding portion of the outer wall is adapted to the groove-shaped space formed between the second retaining ring 17 and the third retaining ring 29 to increase the firmness of the connection between the rotating member 24 and the core rod 3 and improve the stability of the nailer. A third retaining ring 30 is provided inside the third retaining ring 29, and the third retaining ring 30 is squeezed by the third retaining ring 29 and the core rod 3. Through the cooperation of the second retaining ring 17 and the third retaining ring 30, the rotating member 24 and the core rod 3 are more stably fixed relative to each other.

[0067] In another embodiment, a method for using a nail driver for a screwless nail rod system is provided, including using the nail driver for a screwless nail rod system, including: controlling the core rod 3 to drive the first limiting mechanism 5 to move in the direction of the first position, so that the second limiting mechanism 8 opens; connecting the core rod 3 to the ball nail 1, and the first limiting mechanism 5 to the nail seat 2; controlling the core rod 3 to drive the first limiting mechanism 5 to move in the direction of the second position until the second limiting mechanism 8 is connected to the nail seat 2, so that the core rod 3 is relatively fixed with the ball nail 1 and the nail seat 2; rotating the core rod 3 to insert the ball nail 1 into the cone.

[0068] Specifically, the rotating part 24 is rotated in the opposite direction of the limiting mechanism, driving the core rod 3 and the first limiting mechanism 5 on the core rod 3 to move in the direction of the first position, thereby opening the second limiting mechanism 8; aligning the screwdriver head 300 of the core rod 3 with the first groove and installing it to connect the ball head nail 1 and the core rod 3; aligning the second protrusion 510 of the first limiting mechanism 5 with the first matching piece 210 of the nail seat 2 and installing it in the first matching piece 210 to connect the nail seat 2 and the core rod 3; controlling the rotating part 24 to rotate in the direction of the limiting mechanism, driving the core rod 3, the first limiting mechanism 5, the nail seat 2 and the ball head nail 1 to move in the direction of the second position, thereby closing the second limiting mechanism 8 and connecting with the second matching piece 220 on the nail seat 2 to achieve relative fixation of the ball head nail 1, the nail seat 2 and the nailer; rotating the core rod 3 to drive the ball head nail 1 to rotate and be placed in the cone.

[0069] This embodiment provides a nailing device and method for a screwless nailing system. The first and second limiting mechanisms cooperate to achieve relative fixation between the ball stud, the stud holder, and the core rod. This method is simple to operate, saves time and effort, and enables the ball stud to be quickly and stably secured to the cone. The rotating member and the fixing sleeve allow the core rod to move and rotate stably, improving stability.

[0070] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of this application. It should be understood that the above description is only the specific implementation methods of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application should be included in the scope of protection of this application.

Claims

1. A nailing device for a screwless nailing rod system, characterized in that: include: A moving mechanism is detachably connected to the ball stud and the stud seat to be delivered into the body; the moving mechanism includes a core rod, and the core rod extends along a first direction; The ball stud is connected to the stud seat; The limiting mechanism includes a first limiting mechanism and a second limiting mechanism, wherein the first limiting mechanism is provided on both sides of the core rod in the second direction, and is relatively fixedly connected to the core rod so as to follow the movement of the core rod; the second limiting mechanism is provided on both sides of the core rod in the third direction, and one end of the second limiting mechanism is pivotally connected to the core rod for relative movement, and the other end is detachably connected to the nail seat; The second limiting mechanism has a track running through the second direction, and the first limiting mechanism is provided with a first connecting rod, which passes through the track and is connected to the first limiting mechanism arranged oppositely; the first limiting mechanism drives the first connecting rod to move between a first position and a second position in the track to drive the second limiting mechanism to move closer to or away from the direction where the core rod is located, thereby changing the opening angle of the second limiting mechanism; when the first limiting mechanism is in the first position, the second limiting mechanism is at a maximum opening angle; when the first limiting mechanism is in the second position, the second limiting mechanism is at a minimum opening angle, and the core rod is relatively fixed to the ball stud and the stud seat; The core rod is provided with a matching groove; The first limiting mechanism includes a first protrusion, which extends from the inner wall of the matching groove in a direction away from the bottom of the matching groove; One end portion of the second limiting mechanism is located in the matching groove. When the core rod moves, the matching groove is driven to move, so that the second limiting mechanism and the matching groove generate relative displacement.

2. A nailing device for a screwless nail bar system according to claim 1, characterized in that: The moving mechanism includes a fixed sleeve and a rotating member; One end of the fixed sleeve is fixedly connected to the second limiting mechanism, and the other end is threadedly connected to the rotating member; the core rod passes through the fixed sleeve and is fixedly connected to the rotating member.

3. The nailing device for a screwless nail bar system according to claim 1, characterized in that: The first limiting mechanism includes a second protrusion, the second protrusion is provided at the end of the core rod connected to the nail seat, and the two second protrusions are symmetrically arranged in the second direction; The nail seat has a first matching piece, and the second protrusion is adapted to the first matching piece.

4. The nailing device for a screwless nail bar system according to claim 1, characterized in that: The second limiting mechanism includes a first plate and a bent portion, wherein the first plate is arranged above the matching groove, extending in the same direction as the matching groove, and at least partially located in the matching groove; The bending portion is arranged at the end of the first plate close to the nail seat, and the bending portion has a protrusion, and the protrusion is arranged toward the nail seat; The nail seat has a second matching piece, and the protrusion is matched with the second matching piece.

5. The nailing device for a screwless nail bar system according to claim 1, characterized in that: The track has an extension component in a direction away from the matching groove and an extension component opposite to the extension direction of the core rod; the track includes a first track and a second track, the first track is arranged close to the matching groove, and the second track is arranged away from the matching groove. The first track is connected to the second track, and the connection position is arranged at an angle.

6. The nailing device for a screwless nail bar system according to claim 2, characterized in that: The fixing sleeve includes a middle sleeve, the middle sleeve has a first through space for the core rod to pass through, and both ends of the core rod are exposed outside the middle sleeve; The middle sleeve has a second slit extending through the third direction at one end close to the nail seat, and the second slit is opposite to the matching groove; the second limiting mechanism is partially inserted into the second slit and the matching groove; The second limiting mechanism is provided with a second connecting rod, which passes through the second limiting mechanism and is fixedly connected to the middle sleeve.

7. A nailing device for a screwless nail bar system according to claim 6, characterized in that: The outer wall of the middle sleeve is provided with a third protrusion, and the third protrusion is provided with a third track extending along the first direction, and the third track passes through the inner and outer walls of the middle sleeve; The core rod is provided with a second opening and a third connecting rod. The second opening is arranged opposite to the third track. The third connecting rod passes through the third track and the second opening and is fixedly connected to the core rod at the second opening.

8. The nailing device for a screwless nail bar system according to claim 6, characterized in that: The rotating member has a through hole extending along a first direction, and one end of the middle sleeve away from the limiting mechanism is located in the through hole and is threadedly connected to the rotating member; The inner wall of the through hole is protrudingly provided with a first stopper and a second stopper surrounding the core rod, the first stopper is connected to the middle sleeve, and the second stopper is in contact with the core rod; there is a recessed space between the first stopper and the second stopper; a second stop ring is provided on the core rod, the second stop ring is adapted to the recessed space, and the second stop ring is installed in the recessed space.

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