Bone nail implanting device

Abstract

The utility model discloses a bone nail implanting device which comprises an implanting device and a bone nail, the implanting device comprises an h-shaped main frame and an adjusting frame, the main frame comprises a long-strip-shaped main frame and an L-shaped auxiliary frame, a guide mechanism is arranged in the main frame, one end of the main frame is a handheld end, the other end of the main frame is an open end and accommodates the bone nail, and the adjusting frame is arranged on the main frame. The guide mechanism pushes the bone nail to move along the axial direction of the main frame; one end of the auxiliary support is fixedly connected with the main frame, a fixing plate is arranged at the other end of the auxiliary support, a sliding rod is vertically arranged on the fixing plate, a sliding block is arranged on the sliding rod in a sleeved mode, a pressing piece close to the open end is arranged on the sliding block, a first groove is formed in the sliding block, one end of the adjusting frame is movably arranged in the first groove, and the other end of the adjusting frame is movably arranged in the second groove. The other end of the adjusting frame is an operation end, and the middle of the adjusting frame is hinged to the middle of the main frame. According to the bone nail implanting device, drilling and implanting can be combined together, and bone nail implanting is more convenient.

Description

Technical Field

[0001] The utility model belongs to the field of medical devices, and particularly relates to a bone nail implanting device. Background Art

[0002] The portal nails used in the department of sports medicine are commonly used in the reconstruction of anterior and posterior cruciate ligaments to reinforce the implanted tendon, and also used as bone nails for fixing fractures. At present, the method of implanting portal nails is mainly to use drilling tools (such as bone drills, Kirschner wires or opening cones, etc.) to drill bone tunnels, use clamping tools to clamp the portal nails, and then align the portal nails with the two drilled bone tunnels and directly drive them in with a hammer. This method has many disadvantages. For example, when implanting by knocking on harder bone, it needs to be knocked repeatedly, which is time-consuming and laborious, and is prone to cause deformation or even flying out of the portal nails; the implanted portal nails lack an anti-displacement structure and there is a risk of displacement after implantation; positioning drilling and implantation require the cooperation of multiple tools, and a large incision is needed for observation and operation, which is not conducive to performing minimally invasive surgery and also increases the operation difficulty and operation time of the surgery.

[0003] Therefore, it is an urgent problem for those skilled in the art to provide a bone nail implanting device that can combine drilling and implantation and is easy to operate. Summary of the Utility Model

[0004] The utility model provides a bone nail implanting device, which can combine drilling and implantation, and makes the implantation of bone nails and the fixation of fractures more convenient, with simple and rapid operation.

[0005] To solve the above technical problems, the technical solution provided by the utility model is as follows:

[0006] A bone nail implanting device includes a bone nail and an implantor. The implantor includes an H-shaped main frame and an adjusting frame. The main frame includes a long-strip main frame and an L-shaped sub-bracket. A guiding mechanism is arranged inside the main frame. One end of the main frame is a handheld end, and the other end is an open end for accommodating the bone nail. The guiding mechanism pushes the bone nail to move along the axial direction of the main frame. One end of the sub-bracket is fixedly connected to the main frame, and the other end is provided with a fixing plate. A sliding rod is vertically arranged on the fixing plate. A sliding block is sleeved on the sliding rod. A pressing piece close to the open end is arranged on the sliding block. A first groove is arranged on the sliding block. One end of the adjusting frame is movably arranged in the first groove, and the other end is an operating end. The middle part of the adjusting frame is hinged to the middle part of the main frame. By adjusting the adjusting frame, the sliding block can be driven to slide along the sliding rod, and the pressing piece can be driven to press the bone nail located at the outermost side of the open end to move towards the fixing plate. Two through holes are arranged on the sliding block, and the central axis of the through holes is parallel to the central axis of the sliding rod.

[0007] Further, the bone nail includes a connecting portion in the middle and two nail columns fixedly connected to both ends of the connecting portion.

[0008] Further, the main frame has a receiving groove. One end of the receiving groove is close to the handheld end, and the other end is the open end. The guiding mechanism and the bone nail are matched and arranged in the receiving groove. The guiding mechanism includes a first spring and a moving block. One end of the first spring is fixedly connected to one end of the moving block, and the other end is fixedly connected to the handheld end. The other end of the moving block abuts against the bone nail.

[0009] Further, a push rod is sleeved inside the first spring and the handheld end. One end of the push rod is fixedly connected to the moving block, and the other end extends outside the handheld end and is provided with a handle.

[0010] Further, the sliding block has a top surface, a bottom surface and a side surface. The bottom surface is arranged opposite to the fixed plate. The top surface is parallel to the bottom surface. The side surface is opposite to the main frame. The first groove for receiving the end portion of the main frame is formed in the side surface. The first groove penetrates through the top surface and the bottom surface. A connecting plate is arranged on the top surface. Through holes are symmetrically arranged at both ends of the connecting plate. The middle portion of the connecting plate is perpendicularly and fixedly connected to the pressing piece, and the pressing piece is located between the two through holes.

[0011] Further, two second grooves are symmetrically arranged on both sides of the side surface. A cross beam is arranged in the second groove. The cross beam is perpendicular to the sliding rod. The end portion of the adjusting frame is provided with a third groove extending axially. The cross beam is matched in the third groove and can slide relatively in the third groove.

[0012] Further, two fourth grooves are arranged on the fixed plate. The two fourth grooves are respectively coaxially arranged opposite to the two through holes.

[0013] Further, an ultrasonic device is arranged inside the auxiliary bracket. The ultrasonic device includes an ultrasonic head, and the ultrasonic head is arranged in the fourth groove.

[0014] Further, a second spring is further included. One end of the second spring is fixedly connected to the auxiliary bracket, and the other end is fixedly connected to the operating end.

[0015] The bone nail is made of an absorbable polymer material.

[0016] Advantages of the present utility model: The present utility model provides a bone nail implantation device, which integrates drilling and bone nail implantation, avoiding the inconvenience of operation and excessive wound area caused by multiple surgical tools. The implantation operation of the bone nail is simple, labor-saving and efficient, without the need for forceful knocking, thus avoiding the deformation or flying out of the bone nail during implantation; after implantation, the ultrasonic system at the bottom of the implantator can reshape the head of the nail column of the bone nail into a disc shape or other shapes, avoiding the failure caused by the bone nail slipping out of the bone tunnel; the bone nail implantation device of the present utility model can perform minimally invasive surgery, reducing the surgical trauma to the patient. Description of the Drawings

[0017] Figure 1 It is the overall structure diagram of the bone nail implantation device of the present utility model;

[0018] Figure 2 It is the structure diagram of the bone nail of the present utility model;

[0019] Figure 3 It is the structure diagram of the initial state of the implantator of the present utility model;

[0020] Figure 4 It is the structure diagram of the implantator when implanting the bone nail of the present utility model;

[0021] Figure 5 It is the structure diagram of the sliding block of the present utility model.

[0022] Reference numerals include:

[0023] 100 - main frame, 200 - adjusting frame, 300 - fixing plate

[0024] 400 - sliding block, 500 - guiding mechanism, 600 - bone nail

[0025] 110 - main frame, 120 - sub-bracket, 111 - hand-held end

[0026] 112 - receiving groove, 220 - second spring, 210 - operating end

[0027] 310 - sliding rod, 320 - fourth groove, 410 - first groove

[0028] 420 - second groove, 430 - cross beam, 440 - pressing piece

[0029] 450 - through hole, 460 - penetrating hole, 470 - connecting plate

[0030] 510 - first spring, 520 - moving block, 530 - pushing rod

[0031] 540 - handle, 610 - connecting part, 620 - nail column

[0032] 400a - Top surface 400b - Bottom surface 400c - Side surface

[0033] 230 - Switch Detailed implementation manner

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0036] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0038] Such as Figure 1The bone nail implanting device of the present utility model is shown as follows. It mainly includes an H-shaped main frame 100 and an adjusting frame 200. The middle parts of the main frame 100 and the adjusting frame 200 are hinged together, and the two can rotate relative to the hinge point. The H-shaped main frame 100 includes a long strip-shaped main frame 110 and an L-shaped sub-bracket 120. One end of the main frame 110 is a hand-held end 111, and the other end has a receiving groove 112. A guiding mechanism 500 is arranged in the receiving groove 112. The end of the receiving groove 112 away from the hand-held end 111 is an open end. The area near the open end of the receiving groove 112 is used to receive the bone nail 600 to be implanted, and the bone nail 600 abuts against the guiding mechanism 500. The guiding mechanism 500 can drive the bone nail 600 to slide in the receiving groove 112 along the direction from the hand-held end 111 to the open end. The bone nail 600 in this application is a door-shaped nail, and its structure is as Figure 2 shown. The bone nail 600 includes a middle connecting part 610 and two nail columns 620 at both ends of the connecting part. The two nail columns 620 can be implanted on both sides of the fracture line to fix the fracture site. The bone nail 600 is made of an absorbable polymer material and can be degraded and absorbed after bone healing without secondary removal. One end of the L-shaped sub-bracket 120 is fixedly connected to the middle part of the main frame 110, and the other end is provided with a fixing plate 300. Two sliding rods 310 are symmetrically arranged on both sides of the fixing plate 300. The sliding rods 310 are perpendicular to the fixing plate 300. A sliding block 400 is sleeved on the sliding rods 310, and the sliding block 400 can slide along the axis of the sliding rods 310. A pressing piece 440 close to the open end is arranged on the sliding block 400. As Figure 4 shown, the sliding block 400 includes a top surface 400a and a bottom surface 400b that are parallel to each other and a side surface 400c opposite to the main frame 110. The bottom surface 400b faces the fixing plate 300. Two second grooves 420 are symmetrically arranged on both sides of the side surface 400c. As Figure 3 shown, the adjusting frame 200 is of a Y-shaped structure. One end is an operating end 210, which is arranged close to the hand-held end 111. The two branch structures at the other end are respectively located in the corresponding second grooves 420. By adjusting the operating end 210, the adjusting frame 200 rotates around the hinge point with the main frame 110, and the end of the adjusting frame 200 moves in the second groove 420, thereby driving the sliding block 400 to slide along the sliding rod 310. During the process of the sliding block 400 sliding down from the top, the pressing piece 440 will press the outermost bone nail 600 at the open end to move downward along the sliding rod 310, break away from the receiving groove 112, and be implanted into the corresponding bone tunnel.

[0039] As Figure 1 、 Figure 3 and Figure 4As shown in the figure, the guiding mechanism 500 includes a first spring 510 and a moving block 520 disposed in the receiving groove 112. One end of the first spring 510 is fixedly connected to the handheld end 111, and the other end is fixedly connected to one end of the moving block 520. The other end of the moving block 520 abuts against the bone nail 600. The first spring 510 is in a tensioned state and always provides a thrust to the moving block 520 to push the bone nail 600 outwards, thus completing the implantation of the bone nails 600 one by one. A push rod 530 is further sleeved inside the first spring 510 and the handheld end 111. The push rod 530 extends to the outside of the handheld end 111 and is provided with a handle 540. By pulling the handle 540 outwards, the moving block 520 is driven to move towards the handheld end 111, leaving enough space for installing the bone nails 600.

[0040] As Figure 5 Shown in the figure is the specific structural diagram of the sliding block 400. A first groove 410 for receiving the end of the main frame 110 is formed at the side surface 400c of the sliding block 400. The first groove 410 penetrates through the top surface 400a and the bottom surface 400b. Second grooves 420 are located on both sides of the first groove 410. A connecting plate 470 is provided at the connection between the first groove 410 and the top surface 400a. The connecting plate 470 is perpendicularly and fixedly connected to the pressing piece 440, and two through holes 450 are symmetrically provided on both sides of the connecting plate 470. The through holes 450 are located on both sides of the pressing piece 440. The through holes 450 are provided for cooperating with drilling tools (such as bone drills, Kirschner wires, or opening cones, etc.) for drilling. In this application, the width of the pressing piece 440 is smaller than the width of the connecting portion 610 of the bone nail 600, and the center distance between the two through holes 450 is the same as the width of the connecting portion 610. Therefore, the bone tunnel drilled through the through holes 450 can be position-matched with the nail post 620 of the implanted bone nail 600. A through hole 460 is further provided on the sliding block 400 for matching with the sliding rod 310. A cross beam 430 is provided in the second groove 420. The cross beam 430 is perpendicularly disposed with respect to the sliding rod 310 and is used for matching with the adjusting rod 200.

[0041] As Figure 3 and Figure 4 As shown in the figure, a third groove 240 extending along its axial direction is provided at the end of the adjusting frame 200. The cross beam 430 is matched in the third groove 240. When the adjusting frame 200 rotates around the hinge point, the cross beam 430 slides relatively in the third groove 240. A second spring 220 is provided between the adjusting frame 200 and the sub-bracket 120. The second spring 220 is in a stretched state, such that in the initial state, the operating end 210 is in a position far from the handheld end 111, and the sliding block 400 is kept at the upper end of the sliding rod 310.

[0042] As Figure 3 and Figure 4As shown, the fixing plate 300 has two fourth grooves 320, and the two fourth grooves 320 are respectively coaxially arranged with respect to the two through holes 450. An ultrasonic device is arranged in the auxiliary bracket 120, and the ultrasonic device includes an ultrasonic head, which is arranged in the fourth groove 320, and the switch 230 of the ultrasonic device is arranged outside the operating end 210. After the bone screw 600 is implanted in the bone tunnel, the front end of the nail column 620 of the bone screw 600 is located in the fourth groove 320, and the ultrasonic head is used to ultrasonically melt and reshape it into a disc shape or other shapes with a diameter larger than the diameter of the bone tunnel, which can effectively prevent the bone screw 600 from falling out after implantation.

[0043] The utility model also provides a method for using the bone screw implantation device, which specifically comprises the following steps:

[0044] Step 1: confirm the position of the part to be fixed (fracture part), the fracture line and the drilling point, place the fracture line between the fixing plate 300 and the sliding block 400, make the fracture line between the two through holes 450, and make sure that the through hole 450 is aligned with the drilling point, and the drilling tool passes through the through hole 450 to drill a hole at the part to be fixed (fracture part) to obtain a bone tunnel; at this time, the bone screw 600 implanter is in the initial state, and the sliding block 400 is located at the upper end of the sliding rod 310, as shown in FIG. Figure 3 shown.

[0045] Step 2: Hold and press the operating end 210 to drive the sliding block 400 to move toward the part to be fixed (fracture part), and the pressing piece 440 moves downward to press the outermost bone screw 600 to move into the bone tunnel. At this time, the operating end 210 is close to the handheld end 111, and the sliding block 400 is located in the middle of the sliding rod 310. The implanted bone screw 600 is continuously pressurized until it is implanted into the bone tunnel. Figure 4 shown.

[0046] Step 3: Press the switch 230 on the operating end 210 to turn on the ultrasonic device, so that the ultrasonic head ultrasonically melts and reshapes the bone nail 600 (i.e., the head of the nail column 620) located in the fourth groove 320 into a shape that is difficult to escape from the bone tunnel;

[0047] Step 4, release the operating end 210, and the second spring 220 in the stretched state drives the operating end 210 to rotate around the hinge point back to the initial position, and at the same time drives the sliding block 400 to reset back to the initial position, move the bone screw implantation device, and repeat the above operation to implant the next bone screw 600 until the fracture fixation is completed.

[0048] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, many changes can be made in the specific implementation methods and application scopes based on the ideas of the present invention. As long as these changes do not deviate from the concept of the present invention, they all belong to the protection scope of the present invention.

Claims

1. A bone nail implantation device, comprising an implanter and a bone nail (600), characterized in that, The implantor includes an H-shaped main frame (100) and an adjustment frame (200). The main frame (100) includes a long strip-shaped main frame (110) and an L-shaped sub-bracket (120). A guiding mechanism (500) is arranged inside the main frame (110). One end of the main frame (110) is a handheld end (111), and the other end is an open end for accommodating a bone nail (600). The guiding mechanism (500) pushes the bone nail (600) to move axially along the main frame (110). One end of the sub-bracket (120) is fixedly connected to the main frame (110), and a fixing plate (300) is arranged at the other end. A sliding rod (310) is vertically arranged on the fixing plate (300). A sliding block (400) is sleeved on the sliding rod (310). A pressing piece (440) close to the open end is arranged on the sliding block (400). A first groove (410) is arranged on the sliding block (400). One end of the adjustment frame (200) is movably arranged in the first groove (410), and the other end is an operating end (210). The middle part of the adjustment frame (200) is hinged to the middle part of the main frame (110). By adjusting the adjustment frame (200), the sliding block (400) can be driven to slide along the sliding rod (310), and the pressing piece (440) is driven to press the bone nail (600) located at the outermost side of the open end to move towards the fixing plate (300). Two through holes (450) are arranged on the sliding block (400), and the central axis of the through hole (450) is parallel to the central axis of the sliding rod (310).

2. The bone nail implantation device according to claim 1, characterized in that, The bone nail (600) includes a middle connecting part (610) and two nail columns (620) fixedly connected to both ends of the connecting part (610).

3. The bone nail implantation device according to claim 2, characterized in that, The main frame (110) has a receiving groove (112). One end of the receiving groove (112) is close to the handheld end (111), and the other end is the open end. The guiding mechanism (500) and the bone nail (600) are matched and arranged in the receiving groove (112). The guiding mechanism (500) includes a first spring (510) and a moving block (520). One end of the first spring (510) is fixedly connected to one end of the moving block (520), and the other end is fixedly connected to the handheld end (111). The other end of the moving block (520) abuts against the bone nail (600).

4. The bone nail implantation device according to claim 3, wherein, A push rod (530) is sleeved inside the first spring (510) and the handheld end (111). One end of the push rod (530) is fixedly connected to the moving block (520), and the other end extends outside the handheld end (111) and is provided with a handle (540).

5. The bone nail implanting device according to claim 4, characterized in that, The sliding block (400) has a top surface (400a), a bottom surface (400b) and a side surface (400c). The bottom surface (400b) is disposed opposite to the fixing plate (300). The top surface (400a) is parallel to the bottom surface (400b). The side surface (400c) faces the main frame (110). The first groove (410) for receiving the end of the main frame (110) is formed in the side surface (400c). The first groove (410) penetrates through the top surface (400a) and the bottom surface (400b). A connecting plate (470) is disposed on the top surface (400a). Through holes (450) are symmetrically disposed at both ends of the connecting plate (470). The middle of the connecting plate (470) is perpendicularly and fixedly connected to the pressing piece (440), and the pressing piece (440) is located between the two through holes (450).

6. The bone nail implantation device according to claim 5, characterized in that, Two second grooves (420) are symmetrically disposed on both sides of the side surface (400c). A cross beam (430) is disposed in the second groove (420). The cross beam (430) is perpendicular to the sliding rod (310). An axially extending third groove (240) is formed at the end of the adjusting frame (200). The cross beam (430) is fitted in the third groove (240) and can slide relatively in the third groove (240).

7. The bone nail implanting device according to claim 6, characterized in that, Two fourth grooves (320) are disposed on the fixing plate (300). The two fourth grooves (320) are respectively coaxially opposite to the two through holes (450).

8. The bone nail implanting device according to claim 7, wherein An ultrasonic device is disposed in the auxiliary bracket (120). The ultrasonic device includes an ultrasonic head. The ultrasonic head is disposed in the fourth groove (320).

9. The bone nail implantation device according to claim 8, wherein, A second spring (220) is further included. One end of the second spring (220) is fixedly connected to the auxiliary bracket (120), and the other end is fixedly connected to the operating end (210).

10. The bone nail implantation device according to claim 2, wherein, The bone nail (600) is made of an absorbable polymer material.

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