Femoral neck fracture nail plate system imbedding guider
By designing an angle-adjustable femoral neck fracture nail plate system insertion guide, the problem of guide angle fixation is solved, precise insertion of the guide pin and effective fixation of the fracture are achieved, and surgical efficiency and safety are improved.
Patent Information
- Application Number
- CN202511047127.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-29
- Publication Date
- 2025-09-12
AI Technical Summary
In existing femoral neck fracture surgeries, the guide hole angle of the guide is fixed and cannot be adjusted according to the anatomical characteristics of patients of different age groups, resulting in the inability to accurately insert the hollow screw, affecting the fracture reduction and fixation effect.
A femoral neck fracture nail plate system insertion guide was designed, which includes a guide body, a hollow sleeve, a knob, an auxiliary block and an adjustment component. The angle of the hollow sleeve is adjusted by the adjustment component to achieve precise placement of the guide pin. The guide pin is also equipped with a limit assembly and a pressure device to fix the steel plate.
It improves the fracture reduction and fixation effect, reduces the number of fluoroscopy times, shortens the operation time, protects the health of doctors and patients, and achieves effective temporary fixation and pressurization effects of the guide needle.
Smart Images
Figure CN120616744A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of medical devices, and in particular to a femoral neck fracture nail plate system insertion guide. Background Art
[0002] Femoral neck fractures are common lower limb fractures. With the aging population in recent years, the incidence has been increasing year by year. Because conservative treatments often result in complications from bed rest and a high rate of femoral head necrosis, surgical treatment is currently the most common option, significantly improving patient outcomes.
[0003] Patients under 65 years old with femoral neck fractures usually use three hollow screws for internal fixation. The specific surgical method is to first insert a parallel guide wire under fluoroscopy after reducing the patient's femoral neck fracture, and then use a hollow screw to guide the guide wire. Therefore, the insertion position and insertion angle of the guide wire are the key to the successful insertion of the hollow screw. Currently, a guide is used clinically to guide the insertion of the guide wire. The commonly used guide has only a sleeve with a fixed inner diameter and a fixed neck-shaft angle. From infancy to adulthood, the femoral neck-shaft angle of normal people gradually decreases with age. The angle of the guide hole of this guide is fixed and cannot be adjusted according to the anatomical characteristics of patients of different age groups. As a result, the hollow screw cannot be placed in a more accurate position, which in turn affects the reduction of the fracture and the maintenance of effective fixation. Summary of the Invention
[0004] In order to improve fracture reduction and maintain effective fixation, the present application provides a femoral neck fracture nail plate system insertion guide.
[0005] The present application provides a femoral neck fracture nail plate system insertion guide using the following technical solutions: The guide body is provided with a tension screw hole and an anti-rotation screw hole, the bottom end of the guide body is provided with a first transverse locking nail hole and a second transverse locking nail hole, the right end of the guide body is provided with a groove for accommodating a target steel plate, and a limiting assembly for fixing the target steel plate is installed on the guide body, a support ring is installed at the top of the guide body, the auxiliary block is fixedly installed at the top of the guide body, an oblong hole is vertically opened at the right end of the auxiliary block, the hollow sleeve is slidably installed inside the oblong hole and the support ring, the adjusting assembly is installed between the support ring and the auxiliary block, the tuning assembly is used to adjust the up and down floating of the hollow sleeve, the knob is installed on the auxiliary block, and the knob is used to fix the hollow sleeve.
[0006] Optionally, the tension screw hole and the anti-rotation screw hole intersect each other inside the guide body, and the projection of the tension screw hole on the vertical plane and the projection of the anti-rotation screw hole on the vertical plane have an angle of 5°.
[0007] Optionally, the front and rear ends of the guide body are provided with limit grooves, and the bottom of the limit groove is provided with a limit hole connected to the groove. The limit components are provided in two groups, one group of limit components corresponds to the first limit groove, and each group of limit components includes a limit spring, a limit plate and a limit block. The limit plate is located in the limit groove, one end of the limit spring is fixedly connected to the bottom of the limit groove, and the other end is fixedly connected to the limit plate. The limit block is located in the limit hole, and the limit block is fixedly connected to the limit plate.
[0008] Optionally, adjustment grooves are provided at the top and bottom of the inner wall of the support ring, and balls are installed in the adjustment grooves.
[0009] Optionally, the adjustment assembly includes an adjustment rod, an adjustment ring, an ear plate and a rotating rod. Two adjustment rods are provided, and the two adjustment rods are placed obliquely and parallel between the support ring and the auxiliary block. Adjustment holes are provided on both adjustment rods. The adjustment ring is sleeved on the hollow sleeve, the ear plate is fixedly installed at the bottom end of the adjustment ring, and the rotating rod is rotatably installed in the two adjustment holes and is rotatably connected to the ear plate.
[0010] Optionally, a rubber pad layer is laid on the hole wall of the adjustment hole.
[0011] Optionally, a rotating handle is fixedly mounted on the rotating rod.
[0012] Optionally, digital markings are engraved on the hollow sleeve, and the digital markings include a 3mm marking, a 5mm marking and a 10mm marking.
[0013] In summary, this application includes at least one of the following beneficial technical effects: 1. The angle of the hollow sleeve is adjusted by adjusting the assembly, thereby adjusting the angle of the guide pin insertion. After surgery, a 6.5mm compression hollow nail is inserted through the hollow sleeve to improve fracture reduction and maintain effective fixation. 2. The device is easy and quick to operate, reduces the number of fluoroscopy sessions, protects the health of doctors and patients, and shortens surgical time; 3. During surgery, the broken ends are easy to separate again after the compression device of the CCS system is removed. The guide needle can be passed deeper through the hollow sleeve to achieve effective temporary fixation and maintain the compression effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a structural schematic diagram of a femoral neck fracture nail plate system insertion guide in an embodiment of the present application.
[0015] Figure 2 yes Figure 1 Enlarged view of point A in the middle.
[0016] Figure 3 It is a front view of an adjustment component of a femoral neck fracture nail plate system insertion guide in an embodiment of the present application.
[0017] Figure 4 It is a partial schematic diagram of an adjustment component of a femoral neck fracture nail plate system insertion guide in an embodiment of the present application.
[0018] Figure 5 This is a cross-sectional view of a guide for inserting a nail plate system for a femoral neck fracture according to an embodiment of the present application.
[0019] Figure 6 yes Figure 5 Enlarged view of point B in the middle.
[0020] Explanation of the accompanying drawings: 1. Guide body; 11. Groove; 12. Limiting groove; 13. Limiting hole; 14. Tension screw hole; 15. Anti-rotation screw hole; 16. First transverse locking nail hole; 17. Second transverse locking nail hole; 2. Hollow sleeve; 3. Knob; 4. Auxiliary block; 41. Oblong hole; 5. Adjustment assembly; 51. Adjustment rod; 511. Adjustment hole; 52. Adjustment ring; 53. Ear plate; 54. Rotating rod; 541. Rotating handle; 6. Support ring; 61. Adjustment groove; 62. Ball; 7. Limiting assembly; 71. Limiting plate; 72. Limiting spring; 73. Limiting block; 8. Digital identification. DETAILED DESCRIPTION
[0021] The following is combined with Figure 1-6 This application is described in further detail.
[0022] An embodiment of the present application discloses a femoral neck fracture nail plate system insertion guide.
[0023] Reference Figures 1 to 6 A femoral neck fracture nail plate system insertion guide includes a guide body 1, a hollow sleeve 2, a knob 3, an auxiliary block 4 and an adjustment component 5.
[0024] Among them, a groove 11 is provided at the left end of the guide body 1, and the groove 11 is used to accommodate the target steel plate. The left end of the guide body 1 is bent with a bending angle of 130°. A limiting groove 12 is provided at the front and rear ends of the left side of the guide body 1, and a limiting hole 13 connected to the groove 11 is provided at the bottom of the limiting groove 12; a limiting assembly 7 for fixing the target steel plate is installed on the guide body 1, and the limiting assembly 7 is provided with two groups, and the two limiting assemblies 7 correspond to the two limiting grooves 12 respectively. A group of limiting assemblies 7 includes a limiting plate 71, a limiting spring 72 and a limiting block 73. The limiting plate 71 is located in the corresponding limiting groove 12, and one end of the limiting spring 72 is fixedly connected to the bottom of the corresponding limiting groove 12, and the other end is fixedly connected to the corresponding limiting plate 71. The limiting block 73 is placed in the corresponding limiting hole 13, and the limiting block 73 is fixedly connected to the corresponding limiting plate 71. It should be noted that the target steel plate in this application is a CCS system (Compound Compression System) fixed plate.
[0025] When the target steel plate needs to be installed, the staff slides the target steel plate into the groove 11 of the guide body 1. The target steel plate will apply pressure to the limit block 73, causing the two limit blocks 73 to move in opposite directions. The two limit blocks 73 respectively drive the two movable limit plates 71 to move in opposite directions. The limit plate 71 stretches the limit spring 72. When the slot (not shown) on the target steel plate corresponds to the limit hole 13 on the guide body 1, the limit spring 72 is reset, and the two limit springs 72 respectively drive the limit plates 71 to move in opposite directions. The two limit plates 71 respectively drive the two limit blocks 73 to be inserted into the corresponding slots, thereby completing the installation of the target steel plate.
[0026] When the target steel plate needs to be removed, the staff slides the target steel plate toward the outside of the groove 11 of the guide body 1. The target steel plate will apply pressure to the limit block 73, causing the two limit blocks 73 to move in opposite directions. The two limit blocks 73 respectively drive the two movable limit plates 71 to move in opposite directions. The limit plates 71 stretch the limit springs 72. After the target steel plate slides out of the groove 11, the limit springs 72 are reset. The two limit springs 72 respectively drive the limit plates 71 to move in opposite directions. The two limit plates 71 respectively drive the two limit blocks 73 to reset, and the removal of the target steel plate is completed.
[0027] The right end of the guide body 1 is provided with a lag screw hole 14 and an anti-rotation screw hole 15. The lag screw hole 14 is located above the anti-rotation screw hole 15. The lag screw hole 14 and the anti-rotation screw hole 15 intersect each other within the guide body 1. The vertical projection of the lag screw hole 14 and the vertical projection of the anti-rotation screw hole 15 form a 5° angle to facilitate the alignment of the lag screw and anti-rotation screw angles required by the CCS system. It should be noted that the lag screw hole 14 is horizontally oriented.
[0028] A first transverse locking nail hole 16 and a second transverse locking nail hole 17 are formed at the bottom end of the guide body 1 . The first transverse locking nail hole 16 and the second transverse locking nail hole 17 are adapted to the two transverse locking nail holes on the target steel plate.
[0029] A support ring 6 is fixedly mounted on the top of the guide body 1, and an auxiliary block 4 is fixedly mounted on the top of the guide body 1. An oblong hole 41 is vertically opened on the right end of the auxiliary block 4. The hollow sleeve 2 is slidably mounted within the support ring 6 and the oblong hole 41. The inner core diameter of the hollow sleeve 2 is 3mm, and the inner diameter of the oblong hole 41 is larger than the outer diameter of the hollow sleeve 2, so that the hollow sleeve 2 can move up and down in the vertical direction. It should be noted that the hollow sleeve 2 has a floating angle of ±5° in the vertical direction to facilitate the insertion of guide needles at different angles.
[0030] Since the support ring 6 will exert a resistance on the hollow sleeve 2 when the hollow sleeve 2 moves in the vertical direction, an adjustment groove 61 is provided at the top and bottom ends of the support ring 6, and a ball 62 is installed in the adjustment groove 61 for rolling. When the staff adjusts the hollow sleeve 2, the spherical surface of the ball 62 facilitates the up and down tilting of the hollow sleeve 2, which can reduce the resistance of the hollow sleeve 2 and extend the service life of the hollow sleeve 2.
[0031] The adjustment assembly 5 is installed between the support ring 6 and the auxiliary block 4. The adjustment assembly 5 is used to fine-tune the vertical buoyancy of the hollow sleeve 2. The adjustment assembly 5 includes an adjustment rod 51, an adjustment ring 52, an ear plate 53, and a rotating rod 54. Two adjustment rods 51 are provided. The two adjustment rods 51 are placed obliquely and parallel between the support ring 6 and the auxiliary block 4. The adjustment rods 51 are each provided with an adjustment hole 511. The adjustment ring 52 is looped around the hollow sleeve 2. The ear plate 53 is fixedly installed at the bottom end of the adjustment ring 52. The rotating rod 54 is rotatably installed in the two adjustment holes 511 and is rotatably connected to the ear plate 53.
[0032] When the hollow sleeve 2 needs to float upward, the staff moves the rotating rod 54 to the upper right, causing the rotating rod 54 to rotate in the adjustment hole 511 and move to the upper right. The rotating rod 54 will drive the adjusting ring 52 to move to the upper right. The adjusting ring 52 slides on the hollow sleeve 2 and drives the right half of the hollow sleeve 2 to float upward.
[0033] When the hollow sleeve 2 needs to float downward, the staff moves the rotating rod 54 to the lower left, causing the rotating rod 54 to rotate in the adjustment hole 511 and move to the lower left. The rotating rod 54 will drive the adjusting ring 52 to move to the lower left. The adjusting ring 52 slides on the hollow sleeve 2 and drives the right half of the hollow sleeve 2 to float downward.
[0034] The knob 3 is mounted on the rear end of the auxiliary block 4. When the angle of the hollow sleeve 2 is determined, the knob 3 is screwed so that the knob 3 abuts against the hollow sleeve 2, thereby fixing the hollow sleeve 2.
[0035] A rubber pad is laid on the wall of the adjustment hole 511. The rubber pad can enhance the friction of the rotating rod 54. When no staff rotates it, the rotating rod 54 will not move.
[0036] A rotating handle is fixedly mounted on the rotating rod 54 , and the rotating handle facilitates the staff to rotate the rotating rod 54 .
[0037] The hollow sleeve 2 is engraved with digital markings 8, which include a 3mm marking, a 5mm marking and a 10mm marking.
[0038] It is also important to note that after the operation, a 6.5 mm compression hollow screw is driven into the femoral neck through the hollow sleeve 2. The compression hollow screw can further fix the patient's fracture end.
[0039] A method for using a femoral neck fracture nail plate system insertion guide, comprising: Step 1: The patient lies supine on the operating table and a support is used to elevate the patient's limbs to facilitate anteroposterior and lateral fluoroscopy of the patient's fracture site; Step 2: Closed reduction is performed under C-arm surgery. A guide wire is inserted into the upper part of the femoral neck as an anti-rotation wire, and a 6-cm lateral skin incision is made 2 to 3 cm from the central axis of the femoral neck. Step 3: Put the hollow sleeve 2 on the guide needle and adjust the angle between the hollow sleeve 2 and the guide body 1 through the adjustment component 5. After the angle is determined, fix the hollow sleeve 2 with the knob 3; Step 4: Insert the lag screw guide pin into the patient's femoral neck through the lag screw hole 14 and remove the guide body 1; Step 5: Use the lag screw guide pin length and the depth gauge to determine the remaining lag screw length, and then determine the lag screw guide pin depth of the lag screw guide pin inserted into the patient's femoral neck, that is, lag screw guide pin depth = lag screw guide pin length - remaining lag screw length; Step 6: Determine the length of the lag screw and the length of the anti-rotation screw. The lag screw length = the depth of the lag screw guide wire - the pressure distance. The anti-rotation screw length = the lag screw length. Step 7: Clamp the target steel plate into the groove 11 of the guide body 1 through the limiting assembly 7; Step 8: Turn the knob 3 in the reverse direction to adjust the head end of the hollow sleeve 2 forward to the head end of the target steel plate, and then turn the knob 3 in the forward direction to fix the hollow sleeve 2. It should be noted that during the adjustment of the hollow sleeve 2, the adjustment component 5 is not adjusted; Step 9: Remove the lag screw guide wire, install the lag screw on the target plate, and use a hollow step drill to drive the lag screw into the patient's femoral neck; Step 10: Turn the knob 3 in the reverse direction to adjust the hollow sleeve 2 backward to the number mark 8 on the hollow sleeve 2 according to the pressurized distance, and then turn the knob 3 in the forward direction to fix the hollow sleeve 2; Step 11: Pressurize and fix the steel plate forward according to the pressurization distance; Step 12: Use a hollow step drill to drive the anti-rotation screw into the patient's femoral neck through the anti-rotation screw hole 15 on the guide body 1; Step 13: Turn the knob 3 in the reverse direction and adjust the hollow sleeve 2 backward until the hollow sleeve 2 no longer blocks the first transverse locking nail hole 16 and the second transverse locking nail hole 17, and remove the anti-rotation guide pin; Step 14: Drive the first transverse locking nail through the first transverse locking nail hole 16 and the second transverse locking nail through the second transverse locking nail hole 17; Step 15: Drive the pressurized hollow screw through the hollow sleeve 2; Step 16: Remove the guide body 1 from the target steel plate and place the tail cap on the target steel plate.
[0040] The implementation principle of the guide for inserting a nail plate system for a femoral neck fracture in an embodiment of the present application is as follows: the angle of the hollow sleeve 2 and the guide body 1 is adjusted through the adjustment component 5 according to the anti-rotation guide pin pre-injected into the femoral neck of the patient, and then the target steel plate is installed in the groove 11 of the guide body 1 through the limiting component 7, and then the tension screw is driven into the patient's body through the tension screw hole 14, the anti-rotation screw is driven into the patient's body through the anti-rotation screw hole 15, the first transverse locking nail is driven into the patient's body through the first transverse locking nail hole 16, the second transverse locking nail is driven into the patient's body through the second transverse locking nail hole 17, and a pressurized hollow screw is driven into the patient's body through the hollow sleeve 2, and finally the guide body 1 is removed from the target steel plate, thereby achieving the effect of improving the reduction of the fracture and maintaining effective fixation.
[0041] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. A femoral neck fracture nail plate system insertion guide, characterized by: The invention comprises a guide body (1), a hollow sleeve (2), a knob (3), an auxiliary block (4) and an adjustment assembly (5); a tension screw hole (14) and an anti-rotation screw hole (15) are provided at the right end of the guide body (1); a first transverse locking nail hole (16) and a second transverse locking nail hole (17) are provided at the bottom end of the guide body (1); a groove (11) for accommodating a target steel plate is provided at the right end of the guide body (1); a limit assembly (7) for fixing the target steel plate is installed on the guide body (1); and the guide body ( 1) A support ring (6) is installed at the top, the auxiliary block (4) is fixedly installed at the top of the guide body (1), an oblong hole (41) is vertically opened at the right end of the auxiliary block (4), the hollow sleeve (2) is slidably installed inside the oblong hole (41) and the support ring (6), the adjustment component (5) is installed between the support ring (6) and the auxiliary block (4), the adjustment component is used to adjust the vertical float of the hollow sleeve (2), the knob (3) is installed on the auxiliary block (4), and the knob (3) is used to fix the hollow sleeve (2).
2. The femoral neck fracture nail plate system insertion guide according to claim 1, characterized in that: The tension screw hole (14) and the anti-rotation screw hole (15) intersect each other inside the guide body (1), and the projection of the tension screw hole (14) on the vertical plane and the projection of the anti-rotation screw hole (15) on the vertical plane have an angle of 5°.
3. The femoral neck fracture nail plate system insertion guide according to claim 1, characterized in that: The front and rear ends of the guide body (1) are both provided with a limiting groove (12), and the bottom of the limiting groove (12) is provided with a limiting hole (13) connected to the groove (11). The limiting assembly (7) is provided with two groups, one group of the limiting assembly (7) corresponds to the first limiting groove (12), and each group of the limiting assembly (7) includes a limiting spring (72), a limiting plate (71) and a limiting block (73). The limiting plate (71) is located in the limiting groove (12), one end of the limiting spring (72) is fixedly connected to the bottom of the limiting groove (12), and the other end is fixedly connected to the limiting plate (71), the limiting block (73) is located in the limiting hole (13), and the limiting block (73) is fixedly connected to the limiting plate (71).
4. The femoral neck fracture nail plate system insertion guide according to claim 1, characterized in that: The top end and the bottom end of the inner wall of the support ring (6) are both provided with adjustment grooves (61), and balls (62) are installed in the adjustment grooves (61).
5. The femoral neck fracture nail plate system insertion guide according to claim 1, characterized in that: The adjustment assembly (5) comprises an adjustment rod (51), an adjustment ring (52), an ear plate (53) and a rotating rod (54). Two adjustment rods (51) are provided. The two adjustment rods (51) are placed obliquely and parallel between the support ring (6) and the auxiliary block (4). An adjustment hole (511) is provided on each of the two adjustment rods (51). The adjustment ring (52) is sleeved on the hollow sleeve (2). The ear plate (53) is fixedly mounted on the bottom end of the adjustment ring (52). The rotating rod (54) is rotatably mounted in the two adjustment holes (511) and is rotatably connected to the ear plate (53).
6. The femoral neck fracture nail plate system insertion guide according to claim 5, characterized in that: A rubber cushion layer is laid on the hole wall of the adjustment hole (511).
7. The femoral neck fracture nail plate system insertion guide according to claim 5, characterized in that: A rotating handle is fixedly mounted on the rotating rod (54).
8. The femoral neck fracture nail plate system insertion guide according to claim 1, characterized in that: The hollow sleeve (2) is engraved with digital markings (8), and the digital markings (8) include a 3mm marking, a 5mm marking, and a 10mm marking.