Navigation device for implanting and locking intramedullary nail

Abstract

The utility model discloses a navigation device for implanting and locking an intramedullary nail, which relates to the technical field of surgical instruments and comprises a holder with one end used for being connected with the intramedullary nail provided with a far-end lock hole and the other end connected with an intramedullary nail tracer through a support; the support is connected with the far-end lockhole guider through the abduction adjusting assembly, the anterior arch adjusting assembly and the axial adjusting assembly in sequence, and the far-end lockhole guider is further connected with a far-end lockhole tracer; the navigation device can help a doctor to intuitively observe the real-time position of the main nail of the intramedullary nail in the long marrow cavity of the human body and the position of a far-end lockhole in an operation, so that the intramedullary nail can be conveniently implanted into an ideal position, and the operation efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of surgical instruments, and more specifically, relates to a navigation device for intramedullary nail implantation and nail locking. Background Art

[0002] In traditional intramedullary nail surgery, the position of the main nail of the intramedullary nail implanted in the long bone marrow cavity needs to be determined by repeated X-rays, which will delay the efficiency of the operation and cause radiation damage to the patient. In addition, since the main nail of the intramedullary nail is not completely matched with the long bone marrow cavity of the human body, the intramedullary nail will be deformed after implantation compared with before implantation, and the amount of deformation is uncertain. Therefore, it is difficult to use traditional surgical tools to locate the distal locking hole of the intramedullary nail after implantation. Utility Model Content

[0003] The purpose of the utility model is to address the deficiencies in the prior art and provide a navigation device for intramedullary nail implantation and nail locking, which can help doctors visually observe the real-time position of the main nail of the intramedullary nail in the long bone marrow cavity of the human body and the position of the distal locking hole during surgery, making it easier to implant the intramedullary nail into an ideal position and improving surgical efficiency.

[0004] In order to achieve the above-mentioned object, the utility model provides a navigation device for intramedullary nail implantation and nail locking, comprising:

[0005] A holder, one end of which is used to connect to the intramedullary nail, the intramedullary nail is provided with a distal locking hole, and the other end of the holder is connected to the intramedullary nail tracer through a bracket;

[0006] The distal keyhole guide is connected to the distal keyhole guide through an abduction adjustment component, a front arch adjustment component and an axial adjustment component in sequence, and the distal keyhole guide is also connected to a distal keyhole tracer.

[0007] Optionally, a first plane is provided at one end of the bracket, the first plane is fitted with the end of the holder, and is connected with the bracket knob;

[0008] A second plane is provided at the other end of the bracket, and the second plane fits with the end of the abduction adjustment component and is connected with the abduction knob;

[0009] The first plane and the second plane are perpendicular to each other.

[0010] Optionally, the abduction adjustment assembly includes an abduction adjustment frame, one end of the abduction adjustment frame is in contact with the second plane, the other end of the abduction adjustment frame is movably connected to the front bow adjustment assembly, and the middle part of the abduction adjustment frame is rotationally connected to the middle part of the front bow adjustment assembly.

[0011] Optionally, the front bow adjustment assembly comprises:

[0012] A front bow adjustment frame, the middle portion of which is rotatably connected to the middle portion of the abduction adjustment frame via a front bow adjustment shaft;

[0013] A sliding block is sleeved on the outer periphery of the other end of the abduction adjustment frame, and a front bow adjustment knob is passed through the sliding block. The front bow adjustment knob is screwed to the abduction adjustment frame, and the front bow adjustment knob is fixedly connected to the sliding block through a through pin;

[0014] The swing block is sleeved on the outer circumference of the front bow adjustment frame, and the swing block is fixed on the sliding block by a locking screw.

[0015] Optionally, the axial adjustment assembly comprises:

[0016] A cavity, one end of which is connected to one end of the front bow adjustment frame, and the other end of the cavity is threaded with an axial adjustment knob, and the end of the axial adjustment knob extends to the interior of the cavity;

[0017] A slider is slidably arranged in the cavity, and an end of the slider is clamped with an end of the axial adjustment knob.

[0018] Optionally, a slot is provided at the end of the slider, a bearing matched with the axial adjustment knob is provided in the slot, a guide rail is provided in the cavity along the length direction, and the guide rail is slidably matched with the slider.

[0019] Optionally, the slider has a connecting shaft passing through it along the width direction of the cavity, and the two ends of the connecting shaft are respectively connected to the distal keyhole guide and the distal keyhole tracer, the distal keyhole guide is arranged along the axial direction of the connecting shaft, and the distal keyhole tracer is arranged along the radial direction of the connecting shaft.

[0020] Optionally, the distal keyhole tracer is rotatably disposed on the connecting shaft.

[0021] Optionally, the bracket and the abduction adjustment assembly are detachably connected.

[0022] Optionally, the holder is U-shaped, a hand-grip portion is provided in the middle of the holder, and two ends of the holder are respectively connected to the intramedullary nail and the bracket.

[0023] The utility model provides a navigation device for intramedullary nail implantation and nail locking, and its beneficial effect is that: the navigation device establishes an association between the distal locking hole and the intramedullary nail tracer, so that the spatial position of the distal locking hole can be located with the help of the intramedullary nail tracer, and the spatial position of the distal locking hole guide can be located with the help of the distal locking hole tracer, and finally the axis of the distal locking hole guide is aligned with the axis of the distal shrinkage hole of the intramedullary nail, thereby facilitating the drilling and nail locking of the distal end of the long bone.

[0024] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0026] Figure 1 A schematic structural diagram of a navigation device for intramedullary nail implantation and nail locking according to an embodiment of the utility model is shown.

[0027] Figure 2 A schematic diagram of the adjustment direction of a navigation device for intramedullary nail implantation and nail locking according to an embodiment of the utility model is shown.

[0028] Figure 3 A schematic structural diagram of a front bow adjustment assembly according to an embodiment of the utility model is shown.

[0029] Figure 4 An internal cross-sectional view of a front bow adjustment assembly according to an embodiment of the present invention is shown.

[0030] Figure 5 The structure diagram of the axial adjustment assembly according to an embodiment of the utility model is shown. Figure 1 .

[0031] Figure 6 The structure diagram of the axial adjustment assembly according to an embodiment of the utility model is shown. Figure 2 .

[0032] Figure 7 The figure shows the position of an intramedullary nail before implantation into a long medullary cavity according to an embodiment of the utility model.

[0033] Figure 8 The figure shows the position of the intramedullary nail after implantation into the long medullary cavity according to one embodiment of the utility model.

[0034] Fig. 9The schematic diagram shows the structure of a navigation device for intramedullary nail implantation and nail locking according to an embodiment of the utility model, which is located in a long medullary cavity.

[0035] Description of reference numerals:

[0036] 1. Holder; 2. Intramedullary nail; 3. Distal keyhole; 4. Bracket; 5. Intramedullary nail tracer; 6. Distal keyhole guide; 7. Guide rail; 8. Distal keyhole tracer; 9. Bracket knob; 10. Abduction knob; 11. Abduction adjustment frame; 12. Anterior bow adjustment frame; 13. Anterior bow adjustment shaft; 14. Sliding block; 15. Anterior bow adjustment knob; 16. Through pin; 17. Swinging block; 18. Locking screw; 19. Cavity; 20. Axial adjustment knob; 21. Sliding block; 22. Slot. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0038] The utility model provides a navigation device for intramedullary nail implantation and nail locking, comprising:

[0039] A holder, one end of which is connected to an intramedullary nail, a distal locking hole is provided on the intramedullary nail, and the other end of the holder is connected to an intramedullary nail tracer through a bracket;

[0040] The distal keyhole guide is connected to the bracket through the abduction adjustment component, the front bow adjustment component and the axial adjustment component in sequence, and the distal keyhole guide is also connected to the distal keyhole tracer.

[0041] Specifically, the navigation device connects the intramedullary nail and the intramedullary nail tracer through a holder, so that the intramedullary nail can be spatially positioned through the intramedullary nail tracer. In addition, a distal locking hole is provided on the intramedullary nail, and then the intramedullary nail tracer is associated with the distal locking hole, so that the distal locking hole in the long bone can be positioned; a distal locking hole guide is also provided on the end of the holder connected to the intramedullary nail tracer, and the distal locking hole guide is spatially positioned through the distal locking hole tracer. Under the adjustment of the three adjustment components, the distal locking hole guide and the distal locking hole are finally aligned, which is convenient for drilling and locking operations at the distal end of the long bone.

[0042] Optionally, a first plane is provided at one end of the bracket, the first plane is fitted with the end of the holder, and is connected with the bracket knob;

[0043] The other end of the bracket is provided with a second plane, which fits with the end of the abduction adjustment assembly and is connected with the abduction knob;

[0044] The first plane and the second plane are perpendicular to each other.

[0045] Specifically, a bracket is provided between the holder and the multiple adjustment components for connection, and an intramedullary nail tracer is also connected to the bracket. Since the relative positions of the holder and the intramedullary nail are fixed, and the intramedullary nail tracer is fixedly connected to the holder, the intramedullary nail can be spatially positioned with the help of the intramedullary nail tracer. After the position of the distal locking hole in the intramedullary nail is determined, the spatial positioning of the distal locking hole can be achieved. An abduction adjustment component is also connected to the bracket. When the distal locking hole guide needs to be aligned with the distal locking hole, the distal locking hole guide can be moved closer to or away from the intramedullary nail through the abduction adjustment component, thereby adjusting the spatial position of the distal locking hole and optimizing the adjustment steps.

[0046] Optionally, the abduction adjustment assembly includes an abduction adjustment frame, one end of the abduction adjustment frame is in contact with the second plane, the other end of the abduction adjustment frame is movably connected to the front bow adjustment assembly, and the middle part of the abduction adjustment frame is rotationally connected to the middle part of the front bow adjustment assembly.

[0047] Specifically, the abduction adjustment component connects the bracket and the anterior arch adjustment frame in series through the abduction adjustment frame. The end of the abduction adjustment frame controls the fixing strength with the bracket through the abduction knob. When the abduction knob is loosened counterclockwise, the abduction adjustment frame can rotate relative to the bracket around the axis of the abduction knob. When the abduction knob is tightened clockwise, the abduction adjustment frame and the bracket and the fixedly connected intramedullary nail are relatively fixed, which facilitates the adjustment of the spatial position of the distal keyhole guide through other adjustment components.

[0048] Optionally, the front bow adjustment assembly includes:

[0049] The middle part of the front bow adjustment frame is rotatably connected to the middle part of the abduction adjustment frame through the front bow adjustment shaft;

[0050] A sliding block is sleeved on the outer periphery of the other end of the abduction adjustment frame, a front bow adjustment knob is passed through the sliding block, the front bow adjustment knob is screwed to the abduction adjustment frame, and the front bow adjustment knob is fixedly connected to the sliding block through a through pin;

[0051] The swing block is sleeved on the outer periphery of the front bow adjustment frame, and the swing block is fixed on the sliding block through a locking screw.

[0052] Specifically, the middle part of the front bow adjustment frame is connected to the abduction adjustment frame through the front bow adjustment shaft, so that the front bow adjustment frame can rotate around the axis of the front bow adjustment shaft; a sliding block and a front bow adjustment knob are arranged at the end of the abduction adjustment frame, the front bow adjustment knob passes through the sliding block and is screwed on the abduction adjustment frame, and the front bow adjustment knob is fixed to the sliding block through a through pin, so that when the front bow adjustment knob is screwed, the sliding block can realize lifting and lowering movement relative to the abduction adjustment frame. In addition, the sliding block is connected to the swing block through a locking screw, the swing block is arranged on the outer periphery of the front bow adjustment frame, and the swing block is arranged in the area between the front bow adjustment shaft and the axial adjustment component. When the sliding block moves relative to the abduction adjustment frame, the sliding block can drive the swing block to move synchronously, and cooperate with the rotation connection of the front bow adjustment shaft to realize the rotation of the front bow adjustment frame around the axial direction of the front bow adjustment shaft, and finally realize the rotation of the distal lock hole guide.

[0053] Optionally, the axial adjustment assembly comprises:

[0054] A cavity, one end of which is connected to one end of the front bow adjustment frame, and the other end of the cavity is threaded with an axial adjustment knob, and the end of the axial adjustment knob extends to the interior of the cavity;

[0055] The slider is slidably arranged in the cavity, and the end of the slider is clamped with the end of the axial adjustment knob.

[0056] Specifically, the cavity in the axial adjustment assembly is arranged at one end of the front bow adjustment frame away from the bracket, and an axial adjustment knob and a slider are arranged on the cavity. In addition to being mutually engaged with the end of the axial adjustment knob, the slider is also connected to the distal lock hole guide. When the distal lock hole guide needs to be moved along the length direction of the bracket, the abduction adjustment assembly and the front bow adjustment assembly are locked, and then the axial adjustment knob is turned to realize the movement of the slider in the cavity, thereby changing the adjustment of the distal lock hole guide.

[0057] Optionally, a slot is provided at the end of the slider, a bearing cooperating with the axial adjustment knob is provided in the slot, a guide rail is provided in the cavity along the length direction, and the guide rail is slidably matched with the slider.

[0058] Specifically, a slot is provided at the end of the slider near the axial adjustment knob, and a bearing is provided in the slot, and the threaded end of the axial adjustment knob is inserted into the bearing, so that the axial adjustment knob only has a threaded connection with the side wall of the cavity during the screwing process, and the axial adjustment knob applies a thrust or pull force to the slider; in addition, a guide rail is provided between the side wall of the cavity and the fitting surface of the slider to ensure that the moving direction of the slider and the orientation of the distal lock hole guide are stable.

[0059] Optionally, the slider has a connecting shaft passing through it along the width direction of the cavity, and the two ends of the connecting shaft are respectively connected to a distal keyhole guide and a distal keyhole tracer, the distal keyhole guide is arranged along the axial direction of the connecting shaft, and the distal keyhole tracer is arranged along the radial direction of the connecting shaft.

[0060] Optionally, the distal keyhole tracer is rotatably disposed on the connecting shaft.

[0061] Specifically, the distal keyhole guide and the distal keyhole tracer are both connected to the slider through a connecting shaft. When the optical positioning tracking device cannot identify the spatial position of the distal keyhole guide, the angle of the distal keyhole tracer can be rotated to facilitate the reception of tracking signals; the distal keyhole guide is set on the axis of the connecting shaft, so that after determining the position of the distal keyhole tracer, the position of the distal keyhole guide can be accurately determined to ensure that the distal keyhole guide is aligned with the distal keyhole.

[0062] Optionally, the bracket and the abduction adjustment assembly are detachably connected.

[0063] Specifically, the navigation device can also separate the abduction adjustment component, the anterior arch adjustment component and the axial adjustment component from the bracket, so that it is more convenient and flexible to use when only the position of the intramedullary nail in the long bone needs to be determined.

[0064] Optionally, the holder is U-shaped, a hand-grip portion is provided in the middle of the holder, and two ends of the holder are respectively connected to the intramedullary nail and the bracket.

[0065] Specifically, the holder is provided with a hand-held portion in the middle of the U-shape, so that the intramedullary nail can be controlled with one hand, and the other hand can adjust the abduction adjustment component, the anterior arch adjustment component and the axial adjustment component in sequence to align the distal locking hole guide with the distal locking hole.

[0066] Example

[0067] like Figures 1 to 9 As shown, the utility model provides a navigation device for intramedullary nail implantation and nail locking, comprising:

[0068] A holder 1, one end of which is connected to an intramedullary nail 2, a distal locking hole 3 is provided on the intramedullary nail 2, and the other end of the holder 1 is connected to an intramedullary nail tracer 5 through a bracket 4;

[0069] The distal keyhole guide 6 and the bracket 4 are connected to the distal keyhole guide 7 through an abduction adjustment component, a front bow adjustment component and an axial adjustment component in sequence, and the distal keyhole guide 7 is also connected to a distal keyhole tracer 8.

[0070] In this embodiment, a first plane is provided at one end of the bracket 4, and the first plane fits with the end of the holder 1 and is connected with the bracket knob 9;

[0071] The other end of the bracket 4 is provided with a second plane, which fits with the end of the abduction adjustment assembly and is connected with the abduction knob 10;

[0072] The first plane and the second plane are perpendicular to each other.

[0073] In this embodiment, the abduction adjustment assembly includes an abduction adjustment frame 11, one end of the abduction adjustment frame 11 is in contact with the second plane, the other end of the abduction adjustment frame 11 is movably connected to the front bow adjustment assembly, and the middle part of the abduction adjustment frame 11 is rotatably connected to the middle part of the front bow adjustment assembly.

[0074] In this embodiment, the front bow adjustment assembly includes:

[0075] The front bow adjustment frame 12, the middle part of which is rotatably connected to the middle part of the abduction adjustment frame 11 through the front bow adjustment shaft 13;

[0076] A sliding block 14 is sleeved on the outer periphery of the other end of the abduction adjustment frame 11, and a front bow adjustment knob 15 is passed through the sliding block 14. The front bow adjustment knob 15 is screwed to the abduction adjustment frame 11, and the front bow adjustment knob 15 is fixedly connected to the sliding block 14 through a through pin 16;

[0077] The swing block 17 is sleeved on the outer circumference of the front bow adjustment frame 12 , and the swing block 17 is fixed on the sliding block 14 by a locking screw 18 .

[0078] In this embodiment, the axial adjustment assembly includes:

[0079] The cavity 19 has one end connected to one end of the front bow adjustment frame 12, and the other end of the cavity 19 is screwed with an axial adjustment knob 20, and the end of the axial adjustment knob 20 extends to the interior of the cavity 19;

[0080] The slider 21 is disposed in the cavity 19 , and an end of the slider 21 is engaged with an end of the axial adjustment knob 20 .

[0081] In this embodiment, a slot 22 is provided at the end of the slider 21 , a bearing cooperating with the axial adjustment knob 20 is provided in the slot 22 , and a guide rail 7 is provided in the cavity 19 along the length direction, and the guide rail 7 is slidably matched with the slider 21 .

[0082] In this embodiment, the slider 21 has a connecting shaft passing through it along the width direction of the cavity 19, and the two ends of the connecting shaft are respectively connected to the distal keyhole guide 6 and the distal keyhole tracer 8. The distal keyhole guide 6 is arranged along the axial direction of the connecting shaft, and the distal keyhole tracer 8 is arranged along the radial direction of the connecting shaft.

[0083] In this embodiment, the distal keyhole tracer 8 is rotatably disposed on the connecting shaft.

[0084] In this embodiment, the support 4 and the abduction adjustment assembly are detachably connected.

[0085] In this embodiment, the holder 1 is U-shaped, a hand-grip portion is provided in the middle of the holder 1, and two ends of the holder are connected to the intramedullary nail 2 and the bracket 4 respectively.

[0086] In summary, when the navigation device is implanted in a long medullary cavity, the insertion position and depth of the intramedullary nail 2 are controlled by the holder 1, and the spatial position of the intramedullary nail 2 and the distal locking hole 3 are confirmed with the help of the intramedullary nail tracer 5. At the same time, the spatial position of the distal locking hole guide 6 is adjusted by rotating the abduction knob 10, the anterior arch adjustment knob 15 and the axial adjustment knob 20, and the spatial position of the distal locking hole guide 6 is confirmed with the help of the distal locking hole tracer 8. After confirming that the intramedullary nail 2 has reached the ideal position, the distal locking hole 3 is aligned with the distal locking hole guide 6, and finally drilling and locking the nail are performed.

[0087] The various embodiments of the utility model have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A navigation device for intramedullary nail implantation and nail locking, characterized in that: include: A holder, one end of which is used to connect to the intramedullary nail, the intramedullary nail is provided with a distal locking hole, and the other end of the holder is connected to the intramedullary nail tracer through a bracket; The distal keyhole guide is connected to the distal keyhole guide through an abduction adjustment component, a front arch adjustment component and an axial adjustment component in sequence, and the distal keyhole guide is also connected to a distal keyhole tracer.

2. The navigation device for intramedullary nail implantation and nail locking according to claim 1, characterized in that: A first plane is provided at one end of the bracket, the first plane is fitted with the end of the holder and connected with the bracket knob; A second plane is provided at the other end of the bracket, and the second plane fits with the end of the abduction adjustment component and is connected with the abduction knob; The first plane and the second plane are perpendicular to each other.

3. The navigation device for intramedullary nail implantation and nail locking according to claim 2, characterized in that: The abduction adjustment assembly includes an abduction adjustment frame, one end of the abduction adjustment frame is in contact with the second plane, the other end of the abduction adjustment frame is movably connected to the front bow adjustment assembly, and the middle part of the abduction adjustment frame is rotationally connected to the middle part of the front bow adjustment assembly.

4. The navigation device for intramedullary nail implantation and nail locking according to claim 3, characterized in that: The front bow adjustment assembly comprises: A front bow adjustment frame, the middle portion of which is rotatably connected to the middle portion of the abduction adjustment frame via a front bow adjustment shaft; A sliding block is sleeved on the outer periphery of the other end of the abduction adjustment frame, and a front bow adjustment knob is passed through the sliding block. The front bow adjustment knob is screwed to the abduction adjustment frame, and the front bow adjustment knob is fixedly connected to the sliding block through a through pin; The swing block is sleeved on the outer circumference of the front bow adjustment frame, and the swing block is fixed on the sliding block by a locking screw.

5. The navigation device for intramedullary nail implantation and nail locking according to claim 4, characterized in that: The axial adjustment assembly comprises: A cavity, one end of which is connected to one end of the front bow adjustment frame, and the other end of the cavity is threaded with an axial adjustment knob, and the end of the axial adjustment knob extends to the interior of the cavity; A slider is slidably arranged in the cavity, and an end of the slider is clamped with an end of the axial adjustment knob.

6. The navigation device for intramedullary nail implantation and nail locking according to claim 5, characterized in that: A slot is provided at the end of the slider, a bearing matched with the axial adjustment knob is arranged in the slot, a guide rail is arranged in the cavity along the length direction, and the guide rail is slidably matched with the slider.

7. The navigation device for intramedullary nail implantation and nail locking according to claim 5, characterized in that: The slider has a connecting shaft passing through it along the width direction of the cavity, and the two ends of the connecting shaft are respectively connected to the distal keyhole guide and the distal keyhole tracer, the distal keyhole guide is arranged along the axial direction of the connecting shaft, and the distal keyhole tracer is arranged along the radial direction of the connecting shaft.

8. The navigation device for intramedullary nail implantation and nail locking according to claim 7, characterized in that: The distal keyhole tracer is rotatably arranged on the connecting shaft.

9. The navigation device for intramedullary nail implantation and nail locking according to claim 1, characterized in that: The bracket and the abduction adjustment component are detachably connected.

10. The navigation device for intramedullary nail implantation and nail locking according to claim 1, characterized in that: The holder is U-shaped, a hand-holding portion is arranged in the middle of the holder, and two ends of the holder are respectively connected to the intramedullary nail and the bracket.

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