Microfracture device

Abstract

The application provides a micro-fracture device, and relates to the technical field of medical devices.The micro-fracture device comprises a holding part, a taper rod, a taper tip and a hitting part; the holding part is arranged on the taper rod, and the taper tip is arranged at the end of the taper rod; the hitting part is arranged on the taper rod, and the axis of the hitting part is parallel to the axis of the taper tip.The technical effect of reducing side adverse cutting force is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a micro-fracture device. BACKGROUND

[0002] Micro-fracture is a kind of bone marrow stimulation technology. By making holes to make the bone marrow cavity communicate with the joint cavity, the mesenchymal stem cells in the bone marrow blood fill the defect gap, and differentiate into cartilage-like tissue in the defect under the low oxygen environment in the joint cavity to repair the damaged cartilage defect. The surgical method is to make holes in the subchondral bone of the joint cartilage defect by using the sharp cone of the micro-fracture device, so that the marrow cavity communicates with the joint, and the bone marrow blood is drawn out. In order to ensure the effect of the operation, when the sharp cone of the micro-fracture device makes holes in the subchondral bone, the sharp cone needs to be perpendicular to the cartilage, and the sharp cone needs to avoid causing damage to the cartilage outside the hole, and the sharp cone cannot slip, otherwise it will cause damage to a large area of cartilage.

[0003] The cone tip of the large-angle sharp cone can be perpendicular to the bone surface, but the striking force line is not consistent with the direction of the cone tip long axis, and there is a large longitudinal shear force (lateral adverse shear force) when striking the cone handle, which causes the cone tip to slip longitudinally along the cone rod, and the hole side wall is damaged into a "waterfall shape", "sieve shape", or even "hole-hole communication", and the larger the angle, the greater the adverse longitudinal shear force.

[0004] Therefore, it is an important technical problem for those skilled in the art to provide a micro-fracture device that reduces lateral adverse shear force. SUMMARY

[0005] The purpose of the present application is to provide a micro-fracture device to alleviate the technical problem of large lateral adverse shear force in the prior art.

[0006] In a first aspect, the embodiments of the present application provide a micro-fracture device, which comprises a holding part, a cone rod, a cone tip and a striking part.

[0007] The holding part is arranged on the cone rod, and the cone tip is arranged at the end of the cone rod.

[0008] The striking part is arranged on the cone rod, and the axis of the striking part is parallel to the axis of the cone tip.

[0009] In combination with the first aspect, the embodiments of the present application provide a possible implementation manner of the first aspect, wherein the cone rod is provided with a mounting seat for mounting the striking part, and the mounting seat is detachably connected with the striking part.

[0010] In combination with the first aspect, the embodiments of the present application provide a possible implementation manner of the first aspect, wherein the striking part adopts a striking rod, and the striking rod is provided with a striking seat at the end away from the mounting seat.

[0011] With reference to the first aspect, in a possible implementation of the first aspect, the hitting rod is sleeved with a sliding hammer.

[0012] With reference to the first aspect, in a possible implementation of the first aspect, the taper rod comprises a connecting rod and a rotating rod, one end of the rotating rod is rotatably connected with the connecting rod, the other end is connected with the taper tip, and the hitting piece is arranged on the connecting rod.

[0013] With reference to the first aspect, in a possible implementation of the first aspect, one end of the connecting rod is provided with a mounting hole, a clamping plate is inserted in the mounting hole, and an elastic reset piece is sleeved on the clamping plate.

[0014] A limiting convex ring is arranged in the mounting hole, one end of the elastic reset piece abuts against the bottom of the clamping plate, and the other end abuts against the bottom of the limiting convex ring.

[0015] One end of the taper tip is provided with a connecting convex block, and the top of the clamping plate is provided with a connecting groove matched with the connecting convex block.

[0016] With reference to the first aspect, in a possible implementation of the first aspect, the elastic reset piece is a spring.

[0017] With reference to the first aspect, in a possible implementation of the first aspect, the outer side of the end of the connecting rod provided with the mounting hole is provided with an angle mark.

[0018] With reference to the first aspect, in a possible implementation of the first aspect, the rotating rod is inserted in the connecting rod, the connecting rod and the rotating rod are both provided with a fixing hole, and a fixing pin is inserted in the fixing hole.

[0019] The axis of the fixing hole is perpendicular to the axis of the connecting rod.

[0020] With reference to the first aspect, in a possible implementation of the first aspect, the axis of the hitting piece coincides with the axis of the taper tip, and the taper rod is in the shape of n.

[0021] Beneficial effects:

[0022] The application provides a micro-fracture instrument, which comprises a holding part, a taper rod, a taper tip and a hitting piece.

[0023] Specifically, in the micro-fracture operation, the medical staff makes a micro-trauma on the joint of the patient, and then sends the conical tip to the joint, so that the conical tip is located in the subchondral bone of the articular cartilage defect. Then the striker is struck by the striking instrument. Since the axis of the striking piece is parallel to the axis of the conical tip, the stress on the conical tip can be parallel to the axis of the conical tip when the striking piece is struck, so as to reduce or even eliminate the adverse lateral shear force, reduce or even avoid the conical tip slipping, and reduce or even avoid the damage to the side wall of the bone hole. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0025] Figure 1 The schematic diagram of the first embodiment of the micro-fracture instrument provided by the embodiment of the present application;

[0026] Figure 2 The schematic diagram of the second embodiment of the micro-fracture instrument provided by the embodiment of the present application;

[0027] Figure 3 The schematic diagram of the third embodiment of the micro-fracture instrument provided by the embodiment of the present application;

[0028] Figure 4 The schematic diagram of the fourth embodiment of the micro-fracture instrument provided by the embodiment of the present application;

[0029] Figure 5 The schematic diagram of the fifth embodiment of the micro-fracture instrument provided by the embodiment of the present application;

[0030] Figure 6 The schematic diagram of the sixth embodiment of the micro-fracture instrument provided by the embodiment of the present application;

[0031] Figure 7 The schematic diagram of the seventh embodiment of the micro-fracture instrument provided by the embodiment of the present application;

[0032] Figure 8 The schematic diagram of the eighth embodiment of the micro-fracture instrument provided by the embodiment of the present application;

[0033] Figure 9 The schematic diagram of the ninth embodiment of the micro-fracture instrument provided by the embodiment of the present application;

[0034] Figure 10The tenth embodiment of the micro-fracture apparatus provided by the present application is shown in the figure;

[0035] Figure 11 The eleventh embodiment of the micro-fracture apparatus provided by the present application is shown in the figure;

[0036] Figure 12 The first embodiment of the micro-fracture apparatus provided by the present application is shown in the figure, in which the cone rod adopts a connecting rod and a rotating rod;

[0037] Figure 13 The second embodiment of the micro-fracture apparatus provided by the present application is shown in the figure, in which the cone rod adopts a connecting rod and a rotating rod;

[0038] Figure 14 The figure shows the clamping plate and the connecting protrusion of the cone rod of the micro-fracture apparatus provided by the present application;

[0039] Figure 15 The first embodiment of the micro-fracture apparatus provided by the present application is shown in the figure, in which the cone rod adopts a connecting rod and a rotating rod;

[0040] Figure 16 The second embodiment of the micro-fracture apparatus provided by the present application is shown in the figure, in which the cone rod adopts a connecting rod and a rotating rod;

[0041] Figure 17 The third embodiment of the micro-fracture apparatus provided by the present application is shown in the figure, in which the cone rod adopts a connecting rod and a rotating rod;

[0042] Figure 18 The fourth embodiment of the micro-fracture apparatus provided by the present application is shown in the figure, in which the cone rod adopts a connecting rod and a rotating rod.

[0043] Figure:

[0044] 100 - holding part;

[0045] 200 - cone rod; 210 - mounting seat; 230 - connecting rod; 220 - rotating rod; 240 - clamping plate; 241 - connecting groove; 250 - elastic reset member; 260 - limiting protruding ring; 270 - fixing pin;

[0046] 300 - cone tip; 310 - connecting protrusion;

[0047] 400 - hitting part; 410 - hitting seat; 420 - sliding hammer;

[0048] 500 - bone surface. DETAILED DESCRIPTION

[0049] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0050] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0051] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0052] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0053] The present application will be described in further detail below through specific embodiments and in conjunction with the drawings.

[0054] Reference is made to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 ,Figure 14 , Figure 15 , Figure 16 , Figure 17 and Figure 18 As shown, this embodiment provides a microfracture device, including a gripping part 100, a cone rod 200, a cone tip 300, and a striking element 400; the gripping part 100 is disposed on the cone rod 200, and the cone tip 300 is disposed at the end of the cone rod 200; the striking element 400 is disposed on the cone rod 200, and the axis of the striking element 400 is parallel to the axis of the cone tip 300.

[0055] Specifically, during microfracture surgery, medical personnel make a small incision at the patient's joint and then deliver the cone tip 300 to the joint, positioning it in the subchondral bone at the site of the articular cartilage defect. A striking device is then used to strike the striking component 400. Because the axis of the striking component 400 is parallel to the axis of the cone tip 300, the force applied to the cone tip 300 during the striking process is parallel to its axis, thereby reducing or even eliminating adverse lateral shear forces, reducing or even preventing slippage of the cone tip 300, and reducing or even preventing damage to the sidewalls of the bone hole.

[0056] It should be noted that the axes of the cone tip 300 and the striking component 400 are parallel, and medical personnel can set up multiple sets of microfracture instruments with different angles of the cone tip 300 according to actual needs.

[0057] See Figure 6 As shown, in an optional embodiment, the cone rod 200 is provided with a mounting base 210 for mounting the striking element 400, and the mounting base 210 is detachably connected to the striking element 400.

[0058] See Figure 1 - Figure 5 As shown, the striking component 400 is a striking rod, and a striking seat 410 is provided at the end of the striking rod away from the mounting base 210. Providing a striking seat 410 at the end of the striking rod can reduce damage to the striking rod from striking instruments (such as hammers) and improve its service life.

[0059] Specifically, the mounting base 210 allows the striking component 400 to be detachably mounted on the cone rod 200, which is assembled during use and disassembled after use for easy operation and retrieval by medical personnel.

[0060] It should be noted that when using the microfracture device provided in this embodiment, medical personnel need to hold the grip part 100 with their hands to maintain the stability of the microfracture device. Furthermore, without affecting operation, the striking part 400 should be kept as close as possible to the cone tip 300.

[0061] See Figure 3 - Figure 6As shown, in addition, because the position of the hammer or the like striking instrument on the striking seat 410 is different, and the force direction is not coincident with the axis of the taper rod 200, the taper rod 200 will appear left and right rotation instability at the moment of striking, the holding part 100 is set to a flat structure, or the holding part 100 is set to a T-shaped handle, so that the medical staff can more simply control the taper rod 200, and avoid the left and right rotation of the taper rod 200.

[0062] As shown, Figure 5 As shown, in addition, the taper rod 200 is made of a high-strength steel material with high deformation resistance, so as to avoid deformation of the taper rod 200 after multiple uses. Moreover, the strength of the taper rod 200 can be improved by increasing or gradually increasing the outer diameter of the taper rod 200.

[0063] As shown, Figure 6 and Figure 10 As shown, in an optional embodiment of the present embodiment, a sliding hammer 420 is sleeved on the striking rod. By providing the sliding hammer 420 on the striking rod, it can be ensured that the striking force direction falls on the axis of the taper rod 200, thereby eliminating the left and right rotation of the taper rod 200. At the same time, by providing the sliding hammer 420, when the hammer or the like striking instrument cannot be used in a narrow space, the medical staff can still easily perform the striking work.

[0064] As shown, Figure 12 and Figure 13 As shown, in an optional embodiment of the present embodiment, the taper rod 200 includes a connecting rod 230 and a rotating rod 220, one end of the rotating rod 220 is rotatably connected with the connecting rod 230, the other end is connected with the taper tip 300, and the striking member 400 is arranged on the connecting rod 230.

[0065] Specifically, by setting the taper rod 200 as a connecting rod and a rotating rod 220, the taper tip 300 can rotate, and the rotation angle can be set to 180 degrees, that is, it can rotate forward to backward, or rotate left to right. By such a setting, both the axis of the taper tip 300 and the axis of the striking member 400 can be parallel, and the direction of the taper tip 300 can be changed, thereby improving the applicability of the micro-fracture instrument. In an optional embodiment of the present embodiment, one end of the connecting rod 230 is provided with a mounting hole, a clamping plate 240 is inserted in the mounting hole, and an elastic reset member 250 is sleeved on the clamping plate 240; a limiting convex ring 260 is arranged in the mounting hole, one end of the elastic reset member 250 abuts against the bottom of the clamping plate 240, and the other end abuts against the bottom of the limiting convex ring 260; one end of the taper tip 300 is provided with a connecting protrusion 310, and the top of the clamping plate 240 is provided with a connecting groove 241 matched with the connecting protrusion 310.

[0066] The hitting member 400 is arranged on the connecting rod 230, so that the joint of the connecting rod 230 and the rotating rod 220 is at the front end of the hitting member 400, thereby not affecting the position of the hitting member 400 when adjusting the orientation angle of the cone tip 300.

[0067] The elastic reset member 250 is a spring. A cover plate is arranged on the connecting rod 230, and the elastic reset member 250 is arranged in the mounting hole by opening the cover plate.

[0068] Referring to Figure 13 and Figure 14 , specifically, in use, the medical staff pulls the cone tip 300 upward, so that the cone tip 300 drives the clamping plate 240 to protrude from the mounting hole. At this time, the top of the clamping plate 240 is no longer constrained by the inner wall of the mounting hole, and the top of the clamping plate 240 will loosen. At this time, the medical staff can rotate the cone tip 300, then loosen the cone tip 300, and the clamping plate 240 will return to the mounting hole under the action of the elastic reset member 250, and the clamping plate 240 will re-clamp the cone tip 300.

[0069] A positioning hole is arranged in the inner wall of the clamping plate 240, and a positioning convex ball is arranged at the bottom of the cone tip 300, so that the medical staff can conveniently adjust the direction of the cone tip 300.

[0070] An angle mark can be arranged outside the one end of the connecting rod 230 where the mounting hole is arranged. The medical staff can check whether the rotation angle of the cone tip 300 meets the requirements through the angle mark.

[0071] Referring to Figure 12 , in an optional solution of the embodiment, the rotating rod 220 is inserted into the connecting rod 230, and fixing holes are arranged on the connecting rod 230 and the rotating rod 220, and a fixing pin 270 is inserted into the fixing holes; the axis of the fixing hole is perpendicular to the axis of the connecting rod 230.

[0072] Specifically, after the rotating rod 220 is inserted into the connecting rod 230, the fixing pin 270 is inserted into the fixing hole, so as to fix the rotating rod 220 and the connecting rod 230. The two ends of the fixing pin 270 can be threadedly connected with nuts. In addition, when it is necessary to adjust the direction of the cone tip 300, the fixing pin 270 is taken out, the rotating rod 220 is rotated, and then the fixing pin 270 is inserted again.

[0073] Referring to Figure 7 , Figure 11 , Figure 17 and 18 , in an optional solution of the embodiment, the axis of the hitting member 400 coincides with the axis of the cone tip 300, and the cone rod 200 is in the shape of n.

[0074] Specifically, the joint space of knee joint, ankle joint and the like is mostly narrow and deep slit, and in addition, there is the limitation of small incision of minimally invasive surgery, so that the cartilage cone with angle below 45 cannot achieve that the cone tip 300 is perpendicular to the bone surface 500. By setting the cone rod 200 into n type or similar n type, the cone tip 300 can be extended into the narrow and deep slit, so that the cone tip 300 is perpendicular to the bone surface 500, and the axis of the striking piece 400 and the cone tip 300 coincides, eliminating the side adverse shear force.

[0075] When the cone rod 200 is set into n type or similar n type, reinforcing rods can be arranged between the cone rods 200 to ensure the strength of the cone rod 200.

[0076] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A microfracture device, comprising: The utility model relates to a cone hammer, which comprises a holding part (100), a cone rod (200), a cone tip (300) and a hitting piece (400). The holding part (100) is arranged on the cone rod (200), and the cone tip (300) is arranged at the end of the cone rod (200). The hitting piece (400) is arranged on the cone rod (200), and the axis of the hitting piece (400) is parallel to the axis of the cone tip (300). The cone rod (200) comprises a connecting rod (230) and a rotating rod (220), one end of the rotating rod (220) is rotatably connected with the connecting rod (230), the other end is connected with the cone tip (300), and the hitting piece (400) is arranged on the connecting rod (230). One end of the connecting rod (230) is provided with a mounting hole, a clamping plate (240) is inserted in the mounting hole, an elastic reset member (250) is sleeved on the clamping plate (240), a limiting convex ring (260) is arranged in the mounting hole, one end of the elastic reset member (250) abuts against the bottom of the clamping plate (240), the other end abuts against the bottom of the limiting convex ring (260), one end of the cone tip (300) is provided with a connecting convex block (310), and the top of the clamping plate (240) is provided with a connecting groove (241) matched with the connecting convex block (310). The cone rod (200) is provided with a mounting seat (210) for mounting the hitting piece (400), and the mounting seat (210) is detachably connected with the hitting piece (400). The hitting piece (400) is a hitting rod, and the hitting rod is provided with a hitting seat (410) at the end away from the mounting seat (210).

2. The microfracture device of claim 1, wherein, A slide hammer (420) is sleeved on the hitting rod.

3. The microfracture device of claim 2, wherein, The elastic reset member (250) is a spring.

4. The microfracture device of claim 1, wherein, The outer side of the end of the connecting rod (230) provided with the mounting hole is provided with an angle mark.

5. The microfracture device of claim 1, wherein, The rotating rod (220) is inserted in the connecting rod (230), and the connecting rod (230) and the rotating rod (220) are both provided with a fixing hole, and a fixing pin (270) is inserted in the fixing hole.

6. The microfracture device of claim 1, wherein, The axis of the fixing hole is perpendicular to the axis of the connecting rod (230). The axis of the hitting piece (400) coincides with the axis of the cone tip (300), and the cone rod (200) is in the shape of n.

7. The microfracture device of any of claims 1-6, wherein, ​

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