Anchors and anchor implant systems

Abstract

The application discloses an anchor implant device and an anchor implant system, and relates to the technical field of medical devices. The anchor implant device comprises a holding main body, a pre-perforated shaft, a loading sleeve and an anchor pushing assembly; the pre-perforated shaft comprises a shaft rod and a perforated tip end arranged at the distal end of the shaft rod; the loading sleeve is sleeved outside the shaft rod, and the loading sleeve is provided with a loading groove extending along the axial direction and penetrating through the distal end, and the loading groove is used for accommodating a plurality of anchors which are sequentially sleeved on the shaft rod. The anchor pushing assembly is movably arranged on the holding main body and connected with the pre-perforated shaft, so as to drive the anchors to move to the distal end. Wherein, the distal end of the loading groove is configured to be switched between a first state of radial contraction and a second state of radial expansion; before the anchor implantation, the distal end of the loading groove is in the first state; and the distal end of the loading groove is in the second state, so that the anchors can be continuously fed and implanted.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an anchor implantation device and an anchor implantation system. Background Technology

[0002] Rotator cuff avulsion is the most common shoulder joint injury in clinical practice. Arthroscopic treatment using a combined approach of "suture anchor fixation + mesh implant reinforcement" has become an important method to improve the long-term efficacy of rotator cuff repair. The mesh typically requires multiple bone anchors to fix it to the bone surface to provide mechanical support, induce tissue regeneration, and reduce suture tension.

[0003] Currently, the commonly used bone anchors for patch fixation are U-shaped, and their implantation requires the coordinated operation of multiple instruments, including a guide, a trestle cone, and a dedicated inserter. Specifically, the guide is first inserted through the patch and pressed against the bone surface for positioning. Then, the trestle cone is inserted along the guide to create a path on the bone surface. After removing the trestle cone, the dedicated inserter is inserted to implant a single anchor. A single surgery typically requires the implantation of 3 to 5 bone anchors. This multi-instrument, multi-step process needs to be repeated multiple times, making it cumbersome and increasing the risk of operational errors. This significantly prolongs the surgical time and increases the anesthesia risk for the patient. Furthermore, existing guides often have a pointed tooth structure at the tip. This tooth structure needs to penetrate the patch to facilitate anchor implantation, which can cause significant puncture damage to the patch, compromising its integrity and mechanical properties. Simultaneously, the manipulation of the guide's pointed tooth structure and the trestle cone leaves large imprints on the bone surface, causing unnecessary bone tissue damage. The dual damage to both the patch and bone tissue affects postoperative healing and reduces the patch's auxiliary fixation strength, negatively impacting the long-term stability of rotator cuff repair. Furthermore, the existing method of using the inserter with the U-shaped bone anchor is unreliable. The metal tip of the inserter cannot completely penetrate the anchor body, only forming asymmetrical support locally. This leads to a deviation between the force application point and the anchor's force axis, easily generating eccentric loads and stress concentrations within the anchor during implantation. This significantly increases the risk of anchor bending or breakage. Anchor breakage not only leads to fixation failure but may also cause anchor fragments to remain in the bone or joint cavity, triggering foreign body reactions, inflammation, and even secondary injuries. Simultaneously, the additional procedure of removing the broken anchor prolongs the operation time, increases patient trauma and complication risks, and seriously affects the overall safety and prognosis of the surgery. Summary of the Invention

[0004] The purpose of this invention is to provide an anchor implantation device and an anchor implantation system, so as to simplify surgical procedures, reduce damage to patches and bone tissue, reduce the risk of anchor bending and breakage, and improve surgical safety and prognosis.

[0005] To achieve this objective, the present invention adopts the following technical solution: An anchor implantation device, comprising: Holding body; A pre-drilled shaft includes a shaft and a drilled tip located at the distal end of the shaft; A loading sleeve is fitted over the shaft. The loading sleeve has a loading groove that extends axially and passes through the distal end. The loading groove is used to accommodate a plurality of anchors that are sequentially fitted over the shaft. An anchor push assembly is movably disposed on the holding body and connected to the pre-drilled shaft to drive the anchor to move distally; The distal end of the loading groove is configured to switch between a first state of radial contraction and a second state of radial expansion; before the anchor is implanted, the distal end of the loading groove is in the first state; when the distal end of the loading groove is in the second state, the anchor can be continuously fed and implanted.

[0006] As an optional embodiment of the anchor implantation device, a control sleeve is also included. The control sleeve is axially movable and fitted outside the loading sleeve. The outer wall of the distal end of the loading sleeve is provided with an outer conical surface, and the inner wall of the distal end of the control sleeve is provided with an inner conical surface. When the control sleeve moves to the distal end, the inner conical surface presses against the outer conical surface, forcing the distal end of the loading groove to radially contract to the first state.

[0007] As an optional embodiment of the anchor implantation device, it also includes an adjustment knob, which is rotatably connected to the gripping body, and the proximal end of the control sleeve is threadedly engaged with the adjustment knob; rotating the adjustment knob drives the control sleeve to move axially.

[0008] As an optional embodiment of the anchor implantation device, the distal end of the loading groove is provided with a clamping groove, which clamps the tail end of the anchor to be implanted in the first state. The loading groove is also provided with a blocking platform located on the proximal side of the clamping groove; when the tail end of the anchor passes through the blocking platform, the distal end of the loading groove is radially opened to the second state.

[0009] As an alternative to the anchor implantation device, the blocking platform is an inclined boss that gradually protrudes from the inner wall of the loading groove toward the center of the loading sleeve.

[0010] As an optional embodiment of the anchor implantation device, the anchor propulsion assembly includes an operating part, a slider, and a propulsion sleeve. The propulsion sleeve is slidably fitted onto the shaft and located within the loading sleeve, and the distal end of the propulsion sleeve is used to push against the anchor. The slider is slidably disposed on the gripping body, the proximal end of the propulsion bushing is fixed to the slider, and the operating part is connected to the slider and extends at least partially out of the gripping body.

[0011] As an optional embodiment of the anchor implantation device, the gripping body is provided with an installation plane, and the slider and the operating part are located on the inner and outer sides of the installation plane, respectively; The inner wall of the mounting plane is provided with a plurality of slots arranged at intervals along the axial direction, and the slider is provided with a locking protrusion, which engages with the slots to lock the slider. The number of slots is the same as the number of anchors that the loading slot can accommodate.

[0012] As an alternative to the anchor implantation device, the anchor advancement assembly further includes an elastic element that provides the slider with an elastic force to engage the latching protrusion into the slot. Pressing the operating part can overcome the elastic force, causing the card protrusion to disengage from the card slot.

[0013] As an optional embodiment of the anchor implantation device, the holding body is provided with an installation hole, which includes a large-diameter hole and a small-diameter hole, the inner diameter of the large-diameter hole being larger than the inner diameter of the small-diameter hole; the proximal end of the loading sleeve is fixed in the large-diameter hole, and the pusher sleeve passes through the small-diameter hole and enters the loading sleeve; The small-diameter hole has a pin hole in its wall, and the proximal end of the propulsion bushing has an axially extending and radially penetrating relief groove. The pin passes through the relief groove and the pre-drilled shaft and is fixed in the pin hole to axially fix the pre-drilled shaft to the gripping body and allow the propulsion bushing to slide axially.

[0014] As an optional embodiment of the anchor implantation device, the outer wall of the mounting surface is provided with scale markings to indicate the sequence number of the anchor to be implanted.

[0015] An anchor implantation system includes an anchor and an anchor implantation device as described in any of the above embodiments; the anchor has a through cavity, and a plurality of the anchors are connected in series on the shaft through the through cavity and accommodated in the loading groove.

[0016] As an optional embodiment of the anchor implantation system, the anchor includes a nail body and a retaining body disposed at the tail end of the nail body, wherein the outer diameter of the retaining body is larger than the outer diameter of the nail body, so as to compress the patch after implantation; the nail body includes a plurality of inverted cones connected in sequence.

[0017] As an optional solution for the anchor implantation system, the holding body can be in the form of a horizontal beam, a cross structure, a Y-shaped structure, a cylinder, a steering wheel body, or an L-shaped structure.

[0018] As an alternative to the anchor implantation system, the cross-sections of the through cavity and the inverted cone are circular, polygonal, or a combination of straight lines and arcs.

[0019] As an alternative to the anchor implantation system, the anchor also includes wing structures at both ends of the retainer, the wing structures being used to pass through the patch and insert into the bone.

[0020] The beneficial effects of this invention are: The anchor implantation device and system provided by this invention, by coaxially setting a pre-drilled shaft within a loading sleeve, allows multiple anchors to be serially mounted on the shaft and accommodated in the loading groove. This ensures that the central axes of the multiple anchors, the loading sleeve, and the opening tip are coaxial, providing a stable positioning basis for continuous and precise implantation. The opening tip of the pre-drilled shaft can directly pre-drill holes in the bone surface, eliminating the need for additional guide cones and guides, significantly reducing the number of supporting tools and simplifying the surgical procedure. Simultaneously, by pre-forming guide holes in the bone tissue using the opening tip, the axial resistance and lateral stress during anchor implantation are significantly reduced, avoiding compression and splitting of the bone surface and excessive cutting, minimizing the extent of cancellous bone damage, promoting postoperative bone healing and long-term osseointegration of the anchors, and fundamentally eliminating the risk of anchor breakage due to stress concentration. In addition, the distal end of the loading groove is in a radially contracted first state before the anchor is implanted to prevent it from falling off, and in a radially open second state during continuous anchor feeding to allow the anchor to pass through. By switching between the first and second states, the force on the anchor is uniform and the feed is continuous during the delivery and implantation process, which further reduces the possibility of bending and breakage, and effectively improves the efficiency of the operation while ensuring the safety of the operation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the anchor implantation system provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the anchor provided in an embodiment of the present invention; Figure 3 This is an exploded view of the anchor implantation system provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of a portion of the structure of the hidden control sleeve and the gripping body of the anchor implantation system provided in an embodiment of the present invention; Figure 5 This is a cross-sectional view of the anchor implantation system provided in an embodiment of the present invention; Figure 6 This is a front view of the loading sleeve provided in an embodiment of the present invention; Figure 7 This is a cross-sectional schematic diagram of the loading sleeve provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the pre-drilled shaft provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the propulsion bushing provided in an embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of the first handle shell provided in an embodiment of the present invention; Figure 11 This is a schematic diagram of the process of implanting anchors using the anchor implantation system provided in this embodiment of the invention.

[0022] In the picture: 100. Anchor pin; 101. Pin body; 102. Holding body; 103. Through cavity; 1. Grip body; 11. First handle shell; 12. Second handle shell; 13. Mounting plane; 131. Slot; 14. Mounting hole; 141. Large diameter hole; 1411. Limiting protrusion; 142. Small diameter hole; 1421. Pin hole; 15. Scale markings; 2. Pre-drilled shaft; 21. Shaft rod; 22. Drilled tip; 23. Connecting rod; 231. Fixing hole; 3. Loading sleeve; 31. Loading groove; 311. Clamping groove; 312. Blocking platform; 313. Cavity; 32. Outer conical surface; 33. Limiting groove; 4. Anchor bolt propulsion assembly; 41. Operating part; 42. Slider; 421. Locking protrusion; 43. Propulsion bushing; 431. Clearance groove; 44. Elastic element; 45. Connecting block; 5. Control sleeve; 51. Inner conical surface; 52. Threaded section; 6. Adjustment knob; 61. Adjustment end; 62. Connection end; 63. Through hole. Detailed Implementation

[0023] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0025] Unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0026] Unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] Arthroscopic rotator cuff repair is the gold standard for treating full-thickness rotator cuff tears. Suture anchors, as the core consumable for tendon-bone interface fixation, directly determine the initial stability and long-term healing effect of the repair surgery. In recent years, to improve the long-term efficacy of rotator cuff repair, a combined approach of "suture anchor basic fixation + mesh implant reinforcement" has been gradually adopted clinically. The mesh implant plays the following roles during surgery: First, it provides structural reinforcement and mechanical support, covering the torn or weak area of ​​the tendon, enhancing the tensile strength of the repair site, distributing tendon tension, and reducing the risk of tearing at the suture site; at the same time, it reduces stress concentration at the tendon-bone interface, significantly reducing the postoperative re-tear rate. Second, it promotes biological induction and tissue regeneration. The porous scaffold structure of the mesh provides a three-dimensional microenvironment for cell migration and proliferation, inducing host cell ingrowth; the directionally arranged fibrous structure guides the orderly growth of new tendon-like tissue. Clinical data shows that the average postoperative tendon thickness can increase by approximately 2 mm, effectively improving the quality of repair. Third, it reduces suture tension and optimizes healing conditions. The patch can bridge the tendon defect area, avoiding high-tension sutures caused by forcibly pulling the tendon tissue together, reducing postoperative pain, and creating a low-tension, high-blood-supply healing environment for the tendon-bone interface, promoting tendon-bone healing and accelerating the patient's recovery process. Fourth, it assists in fixation and stabilization. In conjunction with the absorbable tendon anchors and polyetheretherketone (PEEK) bone anchors included in the kit, reliable fixation of the patch to the tendon and bone tissue can be achieved during surgery, ensuring the overall stability of the repaired structure.

[0029] Existing patch fixation anchors are U-shaped, requiring specialized instruments such as guides and augers for implantation. This results in cumbersome surgical procedures, high instrument dependence, and the need for 3-5 anchors in rotator cuff repair surgery. The repetitive steps involved with multiple anchors increase the risk of errors, significantly extending surgical time and raising surgical and anesthesia risks for the patient. The guide's tip has a serrated structure that must penetrate the patch implant to facilitate U-shaped anchor insertion. This process causes significant puncture damage to the patch surface, compromising its integrity and mechanical properties. Furthermore, the manipulation of the guide's serrated teeth and augers creates large implantation marks on the bone surface, causing unnecessary bone tissue damage. Damage to the patch and bone tissue not only affects postoperative healing but also reduces the patch's auxiliary fixation strength, negatively impacting the long-term stability of rotator cuff repair. Moreover, existing anchor insertion devices only form asymmetrical support in the local area of ​​the anchor, which can cause a deviation between the force application point of the anchor insertion device and the force axis of the anchor. During the insertion process, eccentric loads and stress concentrations are easily generated inside the anchor, which greatly increases the risk of the anchor bending or breaking.

[0030] To solve the above technical problems, such as Figure 1 As shown, this embodiment provides an anchor implantation system, including an anchor 100 and an anchor implantation device; multiple anchors 100 are connected in series in the anchor implantation device. The anchor implantation device can implant the anchor 100 into the bone while pre-drilling holes in the bone surface. After implanting one anchor 100, it can be used for the next pre-drilling and anchor 100 implantation operation without removing it from the joint cavity. It is suitable for bone surface fixation of patch implants in arthroscopic rotator cuff tear repair surgery, which can significantly reduce the operation time and reduce the surgical risk and the patient's anesthesia risk.

[0031] In one embodiment, such as Figure 2 As shown, the anchor 100 includes a nail body 101 and a retaining body 102 located at the tail end of the nail body 101. The outer diameter of the retaining body 102 is larger than the outer diameter of the nail body 101 to compress the patch after implantation and prevent the patch from moving on the bone surface. The nail body 101 includes a plurality of inverted cones connected in sequence. The inverted cone structure increases the circumferential pull-out resistance of the anchor 100 within the bone. During implantation, the anchor 100 is inserted into the bone through the patch. After implantation, the retainer 102 presses against the surface of the patch, pressing the patch tightly against the bone surface. After implantation into the bone tissue, the anchor 101 restricts the patch from sliding, shifting, or lifting on the bone surface. The anchor 101 forms an interference fit or mechanical engagement with the bone hole wall. The radial compression of the inverted cone surface by the bone tissue forms a reliable axial pull-out resistance, effectively preventing the anchor 100 from loosening from the bone. This achieves a stable connection between the patch and the bone tissue, providing continuous and reliable mechanical support for soft tissue repair.

[0032] The specific shape of the pressing body 102 can be various, such as a straight beam, a cross structure, a Y-shaped structure, a cylinder, a steering wheel shape, or an L-shaped structure; it is only necessary to ensure that the outer diameter of the pressing body 102 is greater than the outer diameter of the nail body 101 so as to be able to press the patch tightly.

[0033] In this embodiment, the holding body 102 is a horizontal beam, and the anchor 100 has a through cavity 103. The through cavity 103 passes through the horizontal beam and the nail body 101, so that the anchor implantation device applies a thrust to the anchor 100 through the through cavity 103, ensuring coaxiality, thereby avoiding eccentric load and stress concentration of the anchor 100 during implantation, and reducing the risk of bending or breaking of the nail body 101.

[0034] The shape of the through cavity 103 is adapted to the shape of the insertion component of the anchor implantation device. The cross-sectional area of ​​the inverted cone gradually decreases from the end connected to the retainer 102 to the end away from the retainer 102. During the implantation of the nail body 101, it has a self-tapping function. After the nail body 101 is implanted into the bone tissue, the nail body 101 is press-fitted with the bone hole wall. The radial compression of the inverted cone surface by the bone tissue forms a reliable axial pull-out resistance.

[0035] The cross-sections of the through cavity 103 and the inverted cone are circular, polygonal, or a combination of straight lines and arcs. For example, they can be circular, triangular, quadrilateral, pentagonal, hexagonal, or other polygonal shapes, or shapes where one pair of sides is a straight line and the other pair of sides is an arc. In this embodiment, the cross-sections of both the through cavity 103 and the inverted cone are circular.

[0036] In one embodiment, the anchor 100 further includes side wing structures at both ends of the retainer 102, which are used to pass through the patch and insert into the bone. The two side wing structures are integrally formed with the retainer 102 and extend vertically downward from the ends of the retainer 102. Simultaneously, the bottom end of the side wing structure is configured as a tapered tip structure, which has a smooth transition and is burr-free, significantly reducing puncture resistance. This facilitates the side wing structures passing through the patch, entering the bone, and fixing it, resulting in a more secure patch fixation. The vertically extending integrated lateral wing structure is more rigid and less prone to bending and deformation under stress, effectively avoiding the displacement and loosening problems that are common with traditional single-point fixation. The conical tip structure significantly reduces the difficulty of surgical puncture and improves the convenience of implantation, while avoiding tearing or damage to the patch during puncture and ensuring the integrity of the patch structure. Through the symmetrical intraosseous inlay and positioning of the two lateral wings, combined with the surface pressure fixation of the retainer 102, the displacement, curling and slippage of the patch are restricted in all directions, greatly improving the overall firmness and stability of the patch fixation, effectively ensuring the repair surgery effect and reducing the risk of postoperative patch loosening and failure.

[0037] like Figures 3-10As shown, this embodiment also provides an anchor implantation device applied to the aforementioned anchor implantation system. The anchor implantation device includes a holding body 1, a pre-drilled shaft 2, a loading sleeve 3, and an anchor propulsion assembly 4. The pre-drilled shaft 2 includes a shaft 21 and an opening tip 22 located at the distal end of the shaft 21. The loading sleeve 3 is sleeved outside the shaft 21 and has a loading groove 31 extending axially and penetrating the distal end. The loading groove 31 is used to accommodate multiple anchors 100 sequentially sleeved on the shaft 21. The multiple anchors 100 are connected in series on the shaft 21 through a through cavity 103 and accommodated within the loading groove 31. The anchor propulsion assembly 4 is movably disposed on the holding body 1 and connected to the pre-drilled shaft 2 to drive the anchors 100 to move distally. The distal end of the loading groove 31 is configured to switch between a first state of radial contraction and a second state of radial opening; before the anchor 100 is implanted, the distal end of the loading groove 31 is in the first state; the distal end of the loading groove 31 is in the second state, which enables the anchor 100 to be continuously fed and implanted.

[0038] It should be noted that in this embodiment, the proximal end is the end closer to the operator, and the distal end is the end farther away from the operator.

[0039] By coaxially setting a pre-drilled shaft 2 within the loading sleeve 3, multiple anchors 100 are connected in series and sleeved on the shaft 21 and accommodated in the loading groove 31. This ensures that the multiple anchors 100 are coaxial with the central axis of the loading sleeve 3 and the opening tip 22, providing a stable positioning basis for continuous and precise implantation. The opening tip 22 of the pre-drilled shaft 2 can directly pre-drill holes in the bone surface, eliminating the need for additional guide cones and guides, significantly reducing the number of supporting tools and simplifying the surgical procedure. At the same time, by pre-forming guide holes in the bone tissue using the opening tip 22, the axial resistance and lateral stress during anchor 100 implantation are significantly reduced, avoiding compression and splitting of the bone surface and excessive cutting, reducing the extent of cancellous bone damage, which is beneficial for postoperative bone healing and long-term osseointegration of the anchors 100, and fundamentally eliminating the risk of anchor 100 breakage due to stress concentration. In addition, the distal end of the loading groove 31 is in a first state of radial contraction before the anchor 100 is implanted to prevent it from falling off, and in a second state of radial opening when the anchor 100 is continuously fed to allow the anchor 100 to pass through. By switching between the first and second states, the anchor 100 is ensured to be subjected to uniform force and continuous feeding during delivery and implantation, further reducing the possibility of bending and breakage, and effectively improving surgical efficiency while ensuring surgical safety.

[0040] Specifically, the gripping body 1 includes a first handle shell 11 and a second handle shell 12 that are fastened together. The body is cylindrical in shape, which facilitates stable gripping and precise operation by the operator. The proximal end of the gripping body 1 is closed, and the distal end is provided with a perforation. The cavity formed inside provides installation space and movement space for the assembly and sliding of the anchor push assembly 4.

[0041] In one embodiment, the anchor push assembly 4 includes an operating part 41, a slider 42, and a push sleeve 43. The push sleeve 43 is slidably sleeved on the shaft 21 and located inside the loading sleeve 3. The distal end of the push sleeve 43 is used to push the anchor 100. The slider 42 is slidably disposed on the holding body 1. The proximal end of the push sleeve 43 is fixed to the slider 42. The operating part 41 is connected to the slider 42 and extends at least partially out of the holding body 1 for manual operation by the operator.

[0042] Before the anchor 100 is implanted, the closed end of the holding body 1 is struck with a bone hammer, causing the opening tip 22 of the pre-drilled shaft 2 to puncture the patch and bone tissue, completing the bone surface pretreatment. Simultaneously, the anchor 100 located at the implantation site is implanted into the bone. After the previous anchor 100 is implanted, the next anchor 100 is advanced to the implantation site using the anchor advancement component 4, thus achieving continuous implantation of the anchors 100.

[0043] Specifically, both the slider 42 and the pusher sleeve 43 are located within the cavity of the grip body 1. The grip body 1 has a long, narrow groove, and the operating part 41 is a push knob located on the outside of the grip body 1. The push knob is connected to the slider 42 inside the cavity via a connecting block 45. Pushing the push knob causes the connecting block 45 to move the slider 42 along the extension direction of the long, narrow groove, and the pusher sleeve 43 pushes against the anchor 100, thereby causing the anchor 100 to move step by step. The lower surface of the push knob is a horizontal contact surface, and the upper surface is an arc-shaped surface that is high at both ends and low in the middle. The arc-shaped surface is integrally formed with raised ridges and other structures to increase anti-slip protrusions, which can effectively increase the contact friction between the fingers and the push knob, prevent slippage and failure of force application during operation, and improve the accuracy and convenience of manual operation.

[0044] Furthermore, the gripping body 1 is provided with a mounting surface 13, and the slider 42 and the operating part 41 are respectively located on the inner and outer sides of the mounting surface 13. The inner wall of the mounting surface 13 is provided with a plurality of slots 131 arranged axially at intervals, and the slider 42 is provided with a locking protrusion 421, which engages with the slots 131 to lock the slider 42. The number of slots 131 is the same as the number of anchors 100 that the loading groove 31 can accommodate. After each anchor 100 is inserted, by pressing the push knob, the locking protrusion 421 and the slot 131 engaged with it are disengaged. Then, the push knob is pushed to the distal end, which drives the slider 42 and the push shaft sleeve 43 to move the next anchor 100, so that the next anchor 100 moves to the position to be inserted. At this time, the locking protrusion 421 and the corresponding next slot 131 engage, thereby locking the position of the anchor 100.

[0045] Specifically, a vertical cut surface is machined on one side of the cylindrical gripping body 1 to form an mounting plane 13. The slider 42 is a rectangular block, and a latching protrusion 421 is provided on the side of the rectangular block near the inner wall of the mounting surface. When the latching protrusion 421 is engaged in the latching groove 131, the side of the rectangular block fits against the inner wall of the mounting surface.

[0046] In one embodiment, the outer wall of the mounting plane 13 is provided with scale markings 15 to indicate the sequence number of the anchor 100 to be implanted. The scale markings 15 are scale lines spaced apart along the extension direction of the mounting plane 13. Each scale line is labeled 1, 2, 3, 4… on one side, and the spacing between the scale lines represents the distance the pusher moves when one anchor 100 is advanced. The spacing between the scale lines precisely matches the single-step advancement distance of the pusher, and each scale line corresponds to an anchor 100 to be implanted, providing a direct and accurate indication of the sequence number of the anchor 100 to be implanted. This solves the problems of unclear position status and easy counting errors during continuous implantation of multiple anchors 100. During the procedure, the operator can use the scale markings 15 to determine the remaining number of anchors 100, the current implantation progress, and the pushing position in real time, eliminating the need to repeatedly check the status of the anchors 100 inside the instrument, significantly improving the operational efficiency and convenience of continuous implantation operations. At the same time, it assists operators in accurately controlling the pushing displacement, avoiding deviations such as over-pushing or under-pushing, and further improving the consistency and implantation accuracy of the 100-step anchor feeding.

[0047] In one embodiment, the anchor push assembly 4 further includes an elastic element 44, which provides the slider 42 with an elastic force to engage the locking protrusion 421 into the locking groove 131; the pressing operation part 41 can overcome the elastic force and disengage the locking protrusion 421 from the locking groove 131. Through the adaptive reset function of the elastic element 44, the linkage effect of "press to unlock, release to lock" is achieved, greatly improving the convenience of operation and reliable locking. Specifically, the elastic element 44 is an elastic plate, which is placed below the side of the rectangular block away from the mounting plane 13, and its middle part abuts against the side of the rectangular block. Of the two ends of the elastic plate, one end is fixedly connected to the inner wall of the gripping body 1, and the other end is a free end that can adaptively deform.

[0048] In one embodiment, the gripping body 1 is provided with a mounting hole 14, which includes a large-diameter hole 141 and a small-diameter hole 142. The inner diameter of the large-diameter hole 141 is larger than the inner diameter of the small-diameter hole 142. The proximal end of the loading sleeve 3 is fixed in the large-diameter hole 141, and the push bush 43 passes through the small-diameter hole 142 and enters the loading sleeve 3. The hole wall of the small-diameter hole 142 is provided with a pin hole 1421, and the proximal end of the push bush 43 is provided with an axially extending and radially penetrating relief groove 431. The pin passes through the relief groove 431 and is fixed in the pin hole 1421 to fix the pre-drilled shaft 2 axially to the gripping body 1, and allows the push bush 43 to slide axially. By using the stepped mounting hole 14 in the gripping body 1 and providing the relief groove 431 on the push bush 43 for the pin to pass through, the axial fixation of the pre-drilled shaft 2 and the sliding relief movement of the push bush 43 are achieved.

[0049] Specifically, mounting blocks are arranged opposite each other inside the first handle housing 11 and the second handle housing 12. The opposite sidewalls of the two mounting blocks are provided with connecting grooves consisting of a large-diameter groove and a small-diameter groove. Each of the two connecting grooves is provided with a pin hole 1421. After the first handle housing 11 and the second handle housing 12 are fastened together, the two connecting grooves are joined to form the mounting hole 14. The pre-drilled shaft 2 also includes a connecting rod 23 located at the end of the shaft 21 away from the hole tip 22. The diameter of the connecting rod 23 is larger than the diameter of the shaft 21. The diameter of the shaft 21 is adapted to the inner diameter of the through cavity of the anchor 100. The connecting rod 23 is provided with a fixing hole 231 perpendicular to its axis. After the pin passes through the clearance groove 431 and the fixing hole 231, both ends are fixedly connected to the two pin holes 1421 respectively. The near-end outer wall of the loading sleeve 3 is provided with a limiting groove 33, and a limiting protrusion 1411 is provided in the large-diameter groove. During installation, the pre-drilled shaft 2 can be first fitted into the push shaft sleeve 43, and then the push shaft sleeve 43 can be placed in the connecting groove in the first handle housing 11. Then, one end of the pin is fixed by passing through the relief groove 431, the fixing hole 231 and the pin hole 1421 in the connecting groove. Then, the loading sleeve 3 is fitted onto the outside of the push shaft sleeve 43, and the proximal end of the loading sleeve 3 is placed in the large diameter groove of the connecting groove. After the second handle housing 12 is fastened to the first handle housing 11, the proximal end face of the loading sleeve 3 abuts against the stepped surface of the mounting hole 14. The limiting groove 33 and the two limiting protrusions 1411 are engaged to fix the loading sleeve 3 to the gripping body 1. The combination of the loading sleeve 3, the push shaft sleeve 43 and the pre-drilled shaft 2 extends out of the gripping body 1 through the through hole.

[0050] In one embodiment, the anchor insertion device further includes a control sleeve 5, which is axially movable and fitted onto the outside of the loading sleeve 3. The outer wall of the distal end of the loading sleeve 3 is provided with an outer conical surface 32, and the inner wall of the distal end of the control sleeve 5 is provided with an inner conical surface 51. When the control sleeve 5 moves distally, the inner conical surface 51 presses against the outer conical surface 32, forcing the distal end of the loading groove 31 to radially contract to a first state. Before inserting the anchor 100, the control sleeve 5 is pushed forward, and the inner conical surface 51 of the control sleeve 5 presses against the outer conical surface 32 of the loading rod, causing the through end of the loading groove 31 of the loading rod to radially contract, thereby gripping the anchor 100 and achieving reliable clamping of the anchor 100, effectively preventing the anchor 100 from falling off due to gravity, vibration, or operational shaking.

[0051] Specifically, the loading groove 31 of the loading sleeve 3 extends through its proximal end, forming an opening and closing groove that can be opened and closed along the proximal end of the loading sleeve 3. This allows the anchor 100 to be pushed out from the loading groove 31. The width of the loading groove 31 is slightly larger than the width of the horizontal beam of the anchor 100, enabling the series storage of multiple anchors 100. The through end of the loading groove 31 is the implantation position of the anchor 100; the anchor 100 moved to the implantation position is the anchor 100 to be implanted.

[0052] In one embodiment, the anchor implantation device further includes an adjustment knob 6, which is rotatably connected to the gripping body 1. The proximal end of the control sleeve 5 is threadedly engaged with the adjustment knob 6. Rotating the adjustment knob 6 drives the control sleeve 5 to move axially. The threaded transmission adjustment method provides high adjustment accuracy and stepless adjustment. In addition, the threaded transmission has a self-locking function, which can lock the position after adjustment.

[0053] Specifically, the adjustment knob 6 has a through hole 63 at its center, which serves as the through hole for the gripping body 1. The inner wall of the through hole is machined with internal threads. The outer wall of the control sleeve 5 near its proximal end has a threaded section 52. The external thread of the threaded section 52 engages with the internal thread of the through hole, enabling a detachable connection between the control sleeve 5 and the adjustment knob 6. During the procedure, rotating the adjustment knob 6 in either the forward or reverse direction precisely drives the control sleeve 5 to move axially forward or backward. The adjustment knob 6 includes an adjustment end 61 and a connecting end 62 connected to each other. The connecting end 62 is located inside the gripping body 1 and is configured as a rotating sleeve structure, engaging with a rotating hole within the gripping body 1 to allow the adjustment knob 6 to rotate relative to the gripping body 1. The outer peripheral wall of the adjustment end 61 has a concave-convex structure to increase the friction when the operator rotates the adjustment knob 6.

[0054] In other embodiments, the control sleeve 5 and the gripping body 1 may adopt a plug-in sliding fit structure. Specifically, the distal end of the gripping body 1 is provided with a plug groove arranged along the axial direction, and the proximal end of the control sleeve 5 is provided with a insert that plugs into the plug groove. Through the limiting plug-in fit between the insert and the plug groove, the control sleeve 5 can move along the axial direction of the plug groove.

[0055] In one embodiment, the far end of the loading groove 31 is provided with a clamping groove 311. In the first state, the clamping groove 311 clamps the tail end of the anchor 100 to be implanted. The loading groove 31 is also provided with a blocking platform 312 located on the proximal side of the clamping groove 311. When the tail end of the anchor 100 passes through the blocking platform 312, the far end of the loading groove 31 is radially opened to the second state.

[0056] Specifically, the clamping groove 311 clamps the horizontal beam of the anchor 100, and the position of the clamping groove 311 is the implantation position. The distal end of the loading groove 31 is also provided with a cavity 313 that matches the outer periphery of the nail body 101 to guide the nail body 101 of the anchor 100 through. The loading groove 31's adaptive opening and closing is achieved through the cooperation of the blocking platform 312 and the clamping groove 311, ensuring stable clamping and positioning of the anchor 100 while it is waiting, preventing the anchor 100 from loosening, dislodging, or shifting during continuous nail feeding. The anchor 100 passively opens and releases during movement, eliminating the need for an additional opening and closing control structure, resulting in a simple structure. The cavity 313 provides guidance for the feeding of the anchor 100, ensuring coaxiality during the pushing and implantation process of the anchor 100, significantly reducing the risk of jamming and shifting.

[0057] Furthermore, the blocking platform 312 is an inclined boss that gradually protrudes from the inner wall of the loading groove 31 toward the center of the loading sleeve 3. The inclined boss causes the horizontal beam to slide along the slope of the inclined boss. While the horizontal beam moves axially, it gradually squeezes the two side walls of the loading groove 31 outward, causing the far end of the loading groove 31 to elastically open radially.

[0058] like Figure 11 As shown, the method of using the anchor implantation system provided in this embodiment is as follows: Figure 11 As shown in Figure a, multiple anchor bolts 100 are pre-connected and sleeved on the shaft 21 of the pre-drilled shaft 2, and loaded into the loading groove 31 of the loading sleeve 3. The contour of the loading groove 31 is adapted to the shape of the anchor bolts 100, which can limit the radial movement and circumferential rotation of the anchor bolts 100 within the loading groove 31. At the same time, it ensures that the central axis of all anchor bolts 100 is coaxial with the axis of the loading sleeve 3 and the pre-drilled shaft 2, providing a stable positioning basis for subsequent continuous feeding and precise implantation.

[0059] Before implantation, by rotating the adjusting knob 6 in the forward direction, the inner conical surface 51 of the control sleeve 5 presses against the outer conical surface 32 of the loading sleeve 3, causing the loading groove 31 to contract radially, thereby gripping the anchor 100 and effectively preventing the anchor 100 from falling off during implantation due to gravity, vibration, or operational shaking. Figure 11 As shown in Figure b, the pre-drilled tip 22 of the pre-drilled shaft 2 is exposed outside the foremost anchor 100. During the implantation operation, the closed end of the holding body 1 is struck by a bone hammer, and the pre-drilled tip 22 first contacts the bone tissue, forming a guide hole on the bone surface through the pre-drilled tip 22, reducing the resistance during anchor 100 implantation. Subsequently, under the action of axial thrust, the nail body 101 of the anchor 100 self-tapping into the bone tissue along the guide hole, completing the fixation of the patch to the bone tissue. The pre-drilling operation reduces the surgical resistance of anchor 100 implantation and reduces the risk of nail body 101 breakage and bone splitting, improving the safety and efficiency of the operation.

[0060] like Figure 11 As shown in Figure c, after the previous anchor 100 is implanted, the anchor implantation device is pulled out vertically so that the opening tip 22 is away from the patch; it is not necessary to remove it from the joint cavity. Figure 11 As shown in Figure d, rotate the adjusting knob 6 in the opposite direction to move the control sleeve 5 closer to the proximal end until the next anchor 100 is visible. Figure 11 As shown in Figure e, pressing the push button unlocks slider 42, and pushing the push button further to the second scale mark position moves the next anchor 100 to the implantation site. Figure 11 As shown in Figure f, rotating the adjusting knob 6 in the forward direction moves the loading sleeve 3 to the distal end, causing the compression loading sleeve 3 to clamp the horizontal beam of the anchor 100 at the implantation site. Figure 11 As shown in g, the above steps are then repeated to implant the next anchor 100. This process is repeated until all anchors 100 are implanted, at which point the anchor implantation device is removed from the joint cavity.

[0061] The anchor implantation system provided in this embodiment enables the loading and continuous feeding of multiple anchors 100, supporting the continuous implantation of multiple anchors 100 in a single operation within confined spaces such as the joint cavity, eliminating the need for repeated instrument withdrawal for anchor 100 loading. This reduces the number of times instruments enter and exit the joint cavity, minimizes surgical interference with the joint cavity, effectively shortens the operation time, and reduces the patient's anesthesia and surgical exposure time. Furthermore, this anchor implantation system integrates pre-drilling, anchor 100 delivery, and implantation locking functions into one unit. During the operation, there is no need to rely on the distribution and sequential operation of multiple tools, fundamentally eliminating the risk of surgical errors caused by incorrect instrument replacement sequence or omission of operational steps. This reduces reliance on the surgeon's experience and improves the standardization and reliability of the surgical procedure.

[0062] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. An anchor implantation device, characterized in that, include: Holding body (1); The pre-drilled shaft (2) includes a shaft (21) and a drilled tip (22) located at the distal end of the shaft (21); A loading sleeve (3) is sleeved on the outside of the shaft (21). The loading sleeve (3) is provided with a loading groove (31) extending axially and penetrating the far end. The loading groove (31) is used to accommodate a plurality of anchors (100) that are sequentially sleeved on the shaft (21). An anchor push assembly (4) is movably disposed on the holding body (1) and connected to the pre-drilled shaft (2) to drive the anchor (100) to move to the distal end; The distal end of the loading groove (31) is configured to switch between a first state of radial contraction and a second state of radial opening; before the anchor (100) is implanted, the distal end of the loading groove (31) is in the first state; the distal end of the loading groove (31) is in the second state, which enables the anchor (100) to be continuously fed and implanted.

2. The anchor implantation device according to claim 1, characterized in that, It also includes a control sleeve (5), which is axially movable and sleeved outside the loading sleeve (3). The outer wall of the far end of the loading sleeve (3) is provided with an outer conical surface (32), and the inner wall of the far end of the control sleeve (5) is provided with an inner conical surface (51). When the control sleeve (5) moves to the far end, the inner conical surface (51) squeezes the outer conical surface (32), forcing the far end of the loading groove (31) to radially contract to the first state.

3. The anchor implantation device according to claim 2, characterized in that, It also includes an adjustment knob (6), which is rotatably connected to the grip body (1), and the proximal end of the control sleeve (5) is threadedly engaged with the adjustment knob (6); rotating the adjustment knob (6) drives the control sleeve (5) to move axially.

4. The anchor implantation device according to claim 1, characterized in that, The far end of the loading groove (31) is provided with a clamping groove (311). In the first state, the clamping groove (311) clamps the tail end of the anchor (100) to be implanted. The loading groove (31) is also provided with a blocking platform (312) located on the near end side of the clamping groove (311); when the tail end of the anchor (100) passes through the blocking platform (312), the far end of the loading groove (31) is radially opened to the second state.

5. The anchor implantation device according to claim 4, characterized in that, The blocking platform (312) is an inclined boss that gradually protrudes from the inner wall of the loading groove (31) toward the center of the loading sleeve (3).

6. The anchor implantation device according to claim 1, characterized in that, The anchor push assembly (4) includes an operating part (41), a slider (42) and a push bushing (43). The push bushing (43) is slidably sleeved on the shaft (21) and located inside the loading sleeve (3). The distal end of the push bushing (43) is used to push the anchor (100). The slider (42) is slidably disposed on the gripping body (1), the proximal end of the propulsion bushing (43) is fixed to the slider (42), and the operating part (41) is connected to the slider (42) and extends at least partially out of the gripping body (1).

7. The anchor implantation device according to claim 6, characterized in that, The gripping body (1) is provided with a mounting surface (13), and the slider (42) and the operating part (41) are respectively located on the inner and outer sides of the mounting surface (13); The inner wall of the mounting plane (13) is provided with a plurality of slots (131) arranged at intervals along the axial direction, and the slider (42) is provided with a protrusion (421). The protrusion (421) engages with the slot (131) to lock the slider (42). The number of slots (131) is the same as the number of anchors (100) that the loading slot (31) can accommodate.

8. The anchor implantation device according to claim 7, characterized in that, The anchor push assembly (4) further includes an elastic element (44), which provides the slider (42) with an elastic force to engage the locking protrusion (421) with the locking groove (131); Pressing the operating part (41) can overcome the elastic force and cause the latch (421) to disengage from the latch (131).

9. The anchor implantation device according to claim 6, characterized in that, The gripping body (1) is provided with a mounting hole (14), which includes a large-diameter hole (141) and a small-diameter hole (142). The inner diameter of the large-diameter hole (141) is larger than the inner diameter of the small-diameter hole (142). The proximal end of the loading sleeve (3) is fixed in the large-diameter hole (141), and the push shaft sleeve (43) passes through the small-diameter hole (142) and enters the loading sleeve (3). The small-diameter hole (142) has a pin hole (1421) on its wall. The proximal end of the propulsion bushing (43) has an axially extending and radially penetrating relief groove (431). The pin passes through the relief groove (431) and the pre-drilled shaft (2) is fixed in the pin hole (1421) to axially fix the pre-drilled shaft (2) to the gripping body (1) and allow the propulsion bushing (43) to slide axially.

10. The anchor implantation device according to claim 7, characterized in that, The outer wall of the mounting plane (13) is provided with scale markings (15) to indicate the serial number of the anchor (100) to be implanted.

11. An anchor implantation system, characterized in that, Includes an anchor (100) and an anchor implantation device as described in any one of claims 1-10; the anchor (100) has a through cavity (103), and a plurality of the anchors (100) are connected in series on the shaft (21) through the through cavity (103) and accommodated in the loading groove (31).

12. The anchor implantation system according to claim 11, characterized in that, The anchor (100) includes a nail body (101) and a retaining body (102) disposed at the tail end of the nail body (101). The outer diameter of the retaining body (102) is larger than the outer diameter of the nail body (101) so as to compress the patch after implantation. The nail body (101) includes a plurality of inverted cones connected in sequence.

13. The anchor implantation system according to claim 12, characterized in that, The pressure-holding body (102) is in the form of a horizontal beam, a cross structure, a Y-shaped structure, a cylinder, a steering wheel body, or an L-shaped structure.

14. The anchor implantation system according to claim 12, characterized in that, The cross-sections of the through cavity (103) and the inverted cone are circular, polygonal, or a combination of straight lines and arcs.

15. The anchor implantation system according to claim 12, characterized in that, The anchor (100) also includes side wing structures at both ends of the pressure holder (102), which are used to pass through the patch and insert into the bone.

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