Medical rapid reduction internal fixation system for proximal humerus fracture
By designing a medical proximal humeral fracture rapid reduction internal fixation system including main body stent, support and servo motor, the problem of difficult to accurately correct the angle of humeral head and fixation instability in the prior art is solved, and efficient, precise reduction and stable fixation of the proximal humeral end is achieved.
Patent Information
- Application Number
- CN202510140015.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-08
- Publication Date
- 2025-04-22
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the prior art, when dealing with severely comminuted proximal humeral fractures, it is difficult to accurately correct the internal and external valvular and rotation of the humeral head, temporary fixation is unstable, affecting the surgical field of view, and it is easy to increase the risk of internal fixation of the humeral head loosening when it is poor.
A medical rapid reduction internal fixation system for proximal humeral fractures is designed, including the main stent, distal humeral support, proximal humeral support and solid humeral clamping stabilizer. The rotating bracket is driven by the servo motor to rotate, and the humeral solid clamping stabilizer at the end of the screw is driven to adjust the angle of the humerus, and the rotation of the connecting column is controlled by a small servo motor to accurately adjust the angle and position of the proximal humerus.
Accurate reduction and fixation of the proximal humerus is achieved, the stability of the humerus is improved, the problem of temporary fixation affecting the surgical field of view is avoided, and the risk of loose internal fixation of the humerus head caused by poor reduction is reduced.
Smart Images
Figure CN119856969A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of humeral fracture fixation instruments, and in particular to a medical rapid reduction and internal fixation system for proximal humeral fractures. Background Art
[0002] Among the fixation methods for proximal humeral fractures, the two most commonly used methods are plate fixation and intramedullary nail fixation. Both fixation methods require reduction first to align the fracture. Temporary fixation is required after reduction. After temporary fixation, X-ray fluoroscopy is required to confirm whether the reduction is good. If the reduction is not good, re-reduction and temporary fixation are required. For severely comminuted proximal humeral fractures, the valgus and rotation of the humeral head cannot be accurately corrected; temporary fixation affects the surgical field of view and the fixation is unstable; excessive adjustments when the reduction is poor can easily increase the risk of loosening of the humeral head fixation. Summary of the invention
[0003] In view of the above background technology, it is proposed that for severely comminuted proximal humeral fractures, the valgus and rotation of the humeral head cannot be accurately corrected; temporary fixation affects the surgical field of view and the fixation is unstable; excessive adjustments when reduction is poor can easily increase the risk of loosening of the humeral head internal fixation. Therefore, a technical solution content of a medical proximal humeral fracture rapid reduction internal fixation system is provided.
[0004] It comprises a main body support, wherein a distal humeral support is arranged at the front bottom of the main body support, a middle section stabilizing rod is arranged at the front middle section of the main body support, a proximal humeral support is arranged at the front top area of the main body support, and a humeral solid clamping stabilizer is arranged at the end of the distal humeral support, the proximal humeral support and the middle section stabilizing rod facing the humerus; The distal humerus support member includes a rotating bracket, a rotating shaft fixed at the upper and lower ends of the rotating bracket, and a screw rod penetrating the rotating bracket, the bottom end of the rotating bracket is provided with a locking bolt penetrating the main bracket, a limiting rod is sleeved on the outer ring of the rotating shaft at the top, the end of the limiting rod away from the rotating shaft at the top penetrates the rotating bracket, the top of the locking bolt is fixedly connected with a servo motor, the output shaft of the servo motor is connected to the bottom end of the rotating shaft at the bottom through a coupling; the proximal humerus support member includes a fixing rod penetrating the rotating bracket, an arc-shaped rod fixed at the front end of the fixing rod, and a sliding rod slidably arranged in the arc-shaped rod, the top of the sliding rod is provided with a small servo motor, the bottom end of the sliding rod is connected with a rotating column, and a connecting column is penetrated by one end of the rotating column facing the humerus; Specific description: After the locking bolt and the limit rod are fixed in the internal through hole of the main support, the servo motor drives the rotating support to rotate, thereby driving the humerus solid clamping stabilizer at the end of the screw to adjust the angle of the distal end of the humerus. At the same time, the humerus solid clamping stabilizer at the end of the screw can also adjust the angle of the humerus slightly. After the humerus solid clamping stabilizer at the end of the proximal humerus support clamps the proximal end of the humerus, the sliding rod is controlled to slide inside the arc rod, and the small servo motor controls the rotation of the connecting column to change the angle and position of the proximal humerus.
[0005] The humerus solid clamping stabilizer includes a U-shaped shell, two gears arranged in the inner cavity of the U-shaped shell in a mirror-symmetrical rotation, and two clamping arms arranged in the inner cavity of the U-shaped shell in a mirror-symmetrical rotation. A pulling arm is hinged on the outer ring surface of the gear, and the end of the pulling arm away from the gear is hinged to the outer side wall of the clamping arm. A driving motor is installed at the bottom of the U-shaped shell, and the output shaft of the driving motor is fixedly connected to the bottom end of the gear on the right side through a coupling. An electric-controlled servo motor is installed on the side of the U-shaped shell away from the clamping arm.
[0006] Specific description: The proximal humerus support and the humerus solid clamping stabilizer at the proximal humerus support are located at the proximal humerus exposed during surgery, the middle section stabilizer and the humerus solid clamping stabilizer at the middle section stabilizer are located at the middle section of the humerus, and the distal humerus support and the humerus solid clamping stabilizer at the distal humerus support are located at the distal end of the humerus. After the electric servo motor is controlled to drive the overall rotation angle of the humerus solid clamping stabilizer, the humerus is located in the gap between the clamping arms, the gears are controlled to rotate by the driving motor, and the meshing relationship between the gears is used to drive the traction arms to move closer or farther from each other, so that the traction arms pull the clamping arms closer or farther from each other, and then the clamping arms approaching each other clamp the outer surface of the humerus, thereby fixing each section of the humerus.
[0007] In the above-mentioned technical solution of the rapid reduction internal fixation system for medical proximal humeral fractures, preferably: a plurality of through holes arranged at equal distances are opened inside the main support, the end of the limit rod and the locking bolt away from the rotating support passes through the through hole, one end of the middle stabilizing rod passes through the through hole, and the end of the fixing rod away from the arc rod passes through the through hole.
[0008] In the above-mentioned technical solution of the rapid reduction and internal fixation system for medical proximal humeral fractures, preferably: the middle section stabilizing rod includes a cylinder with a screw thread and a nut sleeved on the screw thread section of the cylinder, the cylinder is located in the interior of the front side of the main body support and is penetrated by a support column, and the end of the support column is fixedly connected to the side wall of the U-shaped shell of the middle section.
[0009] In the above-mentioned technical solution of the rapid reduction and internal fixation system for medical proximal humeral fractures, preferably: a plurality of circular holes for the screw rods to pass through are opened at medium distances inside the rotating bracket, the end of the locking bolt away from the servo motor passes through the through hole inside the main bracket, and a bolt is screwed on the section of the servo motor located on the rear side of the main bracket.
[0010] In the technical solution of the above-mentioned medical rapid reduction internal fixation system for proximal humeral fractures, preferably: nuts are screwed on the sections of the screw located outside the rotating bracket, and the sides of the nuts close to each other are in close contact with the outer side wall of the rotating bracket.
[0011] In the technical solution of the above-mentioned medical rapid reduction internal fixation system for proximal humeral fractures, preferably: a through hole is opened inside the limiting rod for the top shaft to pass through, and a bearing that is later adapted to the shaft is installed inside the through hole.
[0012] In the above-mentioned technical solution of the rapid reduction and internal fixation system for medical proximal humeral fractures, preferably: a sliding groove is opened inside the arc rod for the sliding rod to slide along the arc, and a clamping block is fixed on the outer surface of the small servo motor, and the side wall of the clamping block contacts the outer surface of the arc rod, so as to limit the rotation of the small servo motor and the rotation of the outer casing accordingly.
[0013] In the above-mentioned technical solution of the rapid reduction and internal fixation system for medical proximal humeral fractures, preferably: a fastening nut is screwed on the section of the sliding rod located below the arc rod, a through hole is provided inside the rotating column for the connecting column to pass through, and a nut is provided on the section of the connecting column located outside the through hole.
[0014] In the technical solution of the medical rapid reduction and internal fixation system for proximal humeral fractures, preferably: a base is fixedly connected to the bottom surface of the U-shaped shell, and an opening is provided inside the base for embedding the drive motor.
[0015] In the technical solution of the medical rapid reduction and internal fixation system for proximal humeral fractures, preferably: the gears are meshed with each other, and the sides of the clamping arms that are close to each other are in contact with the outer surface of the humerus.
[0016] It can be seen from the above technical solution that the present invention provides a medical rapid reduction and internal fixation system for proximal humeral fractures. Compared with the prior art, the present invention has the following beneficial effects: In the technical solution of the present invention, a main frame is provided, and a group of support members are respectively provided at the proximal end, distal end and middle section of the main frame, wherein the proximal humerus support member can allow the proximal humerus to be fixed to be adjusted inward and outward rotation and rotation under precise control, and the distal humerus support member can also help the distal humerus to perform precise control of rotation and forward and backward position movement. At the same time, the contact position between the support member and the humerus is clamped by an electrically controlled clamp, which not only improves the fixation stability of the humerus, but also does not affect the surgical field of view during temporary fixation. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces and describes the drawings required for use in the embodiments of the present invention or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0018] Figure 1 It is a schematic diagram of the overall structure of the humeral fracture reduction and fixation mechanism; Figure 2 is a schematic diagram of a distal humeral support; Figure 3 It is a schematic diagram of the proximal humeral support; Figure 4 Schematic diagram of a humeral solid clamp stabilizer.
[0019] Attached Figure 1 - Attachment Figure 4 The corresponding relationship of the parts is as follows: 1. Main support; 2. Distal humeral support; 21. Rotating support; 22. Locking bolt; 23. Servo motor; 24. Screw; 25. Nut; 26. Rotating shaft; 27. Limit rod; 3. Proximal humeral support; 31. Fixed rod; 32. Arc rod; 33. Rotating column; 34. Connecting column; 35. Small servo motor; 36. Sliding rod; 37. Fastening nut; 4. Humerus solid clamping stabilizer; 41. U-shaped shell; 42. Electric servo motor; 43. Base; 44. Driving motor; 45. Gear; 46. Pulling arm; 47. Clamping arm; 5. Middle section stabilizing rod. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0021] In order to more clearly explain and illustrate the technical solution and implementation of the present invention, preferred specific embodiments for implementing the technical solution of the present invention are introduced below.
[0022] Embodiment: A preferred technical solution of a medical rapid reduction and internal fixation system for proximal humeral fractures: Refer to the instruction manual Figure 1 As shown: it includes a main frame 1, a humeral distal support member 2 is arranged at the front bottom position of the main frame 1, a middle section stabilizing rod 5 is arranged at the front middle section of the main frame 1, a humeral proximal support member 3 is arranged at the front top area of the main frame 1, and a humeral solid clamping stabilizer 4 is arranged on the distal humeral support member 2, the proximal humeral support member 3 and the middle section stabilizing rod 5 at one end facing the humerus; Refer to the instruction manual Figure 2 As shown: the humeral distal support 2 includes a rotating bracket 21, a rotating shaft 26 fixed at the upper and lower ends of the rotating bracket 21, and a screw 24 penetrating the rotating bracket 21. The bottom end of the rotating bracket 21 is provided with a locking bolt 22 penetrating the main bracket 1. A limiting rod 27 is sleeved on the outer ring of the top rotating shaft 26. The end of the limiting rod 27 away from the top rotating shaft 26 penetrates the rotating bracket 21. A servo motor 23 is fixedly connected to the top of the locking bolt 22. The output shaft of the servo motor 23 is connected to the bottom end of the bottom rotating shaft 26 through a coupling. Refer to the instruction manual Figure 3 As shown: the humeral proximal support member 3 includes a fixed rod 31 penetrating the rotating bracket 21, an arc rod 32 fixed to the front end of the fixed rod 31, and a slide rod 36 slidably arranged inside the arc rod 32, a small servo motor 35 is arranged on the top of the slide rod 36, and a rotating column 33 is connected to the bottom end of the slide rod 36, and a connecting column 34 is penetrated at one end of the rotating column 33 facing the humerus; Refer to the instruction manual Figure 4 As shown: the humeral solid clamping stabilizer 4 includes a U-shaped shell 41, two gears 45 arranged in the inner cavity of the U-shaped shell 41 in a mirror-symmetrical rotation, and two clamping arms 47 arranged in the inner cavity of the U-shaped shell 41 in a mirror-symmetrical rotation. A pulling arm 46 is hinged on the outer ring surface of the gear 45, and the end of the pulling arm 46 away from the gear 45 is hinged to the outer side wall of the clamping arm 47. A driving motor 44 is installed at the bottom of the U-shaped shell 41, and the output shaft of the driving motor 44 is fixedly connected to the bottom end of the right gear 45 through a coupling, and an electric-controlled servo motor 42 is installed on the side of the U-shaped shell 41 away from the clamping arm 47.
[0023] Refer to the instruction manual Figure 1As shown: a plurality of through holes arranged at equal distances are opened inside the main support 1, the limiting rod 27 and the end of the locking bolt 22 away from the rotating support 21 pass through the through hole, one end of the middle section stabilizing rod 5 passes through the through hole, and the end of the fixing rod 31 away from the arc rod 32 passes through the through hole. The middle section stabilizing rod 5 includes a cylinder with a threaded section and a nut sleeved on the threaded section of the cylinder. The cylinder is located at the front side of the main support 1 and penetrates a support column, and the end of the support column is fixedly connected to the side wall of the middle section U-shaped shell 41.
[0024] Refer to the instruction manual Figure 2 As shown: several round holes for the screw rod 24 to pass through are opened at a medium distance inside the rotating bracket 21, the end of the locking bolt 22 away from the servo motor 23 passes through the through hole inside the main bracket 1, and the servo motor 23 is screwed with a bolt on the section located on the rear side of the main bracket 1. Nuts 25 are screwed on the sections of the screw rod 24 located outside the rotating bracket 21, and the side of the nuts 25 close to each other is in close contact with the outer side wall of the rotating bracket 21. A through hole for the top rotating shaft 26 to pass through is opened inside the limiting rod 27, and a bearing that will later match the rotating shaft 26 is installed inside the through hole.
[0025] Refer to the instruction manual Figure 3 As shown: the arc rod 32 is provided with a slide groove for the slide rod 36 to slide along the arc, and a block is fixed on the outer surface of the small servo motor 35. The side wall of the block contacts the outer surface of the arc rod 32, which is used to limit the rotation of the small servo motor 35 and the housing rotates accordingly. A fastening nut 37 is screwed on the section of the slide rod 36 located below the arc rod 32, and a through hole is provided inside the rotating column 33 for the connecting column 34 to pass through, and a nut is provided on the section of the connecting column 34 located outside the through hole. A base 43 is fixedly connected to the bottom surface of the U-shaped housing 41, and an opening is provided inside the base 43 for the drive motor 44 to be embedded. The gears 45 are meshed with each other, and the side of the clamping arms 47 that are close to each other contacts the outer surface of the humerus.
[0026] According to the above-mentioned preferred technical solution, the workflow of the technical solution is described as follows: Before the humeral reduction and fixation, the humeral distal support 2, the humeral proximal support 3 and the middle stabilizer 5 are immersed and disinfected for 10 to 15 minutes in a disinfectant solution, especially the humeral solid clamp stabilizer 4. The humeral solid clamp stabilizer 4 can be disinfected by steam boiling for 20 to 30 minutes and immersed in a disinfectant solution for 10 to 15 minutes. Then, the humeral distal support 2, the humeral proximal support 3, the middle stabilizer 5 and the humeral solid clamp stabilizer 4 are rinsed with distilled water for 10 to 20 minutes.
[0027] Afterwards, the proximal humerus support 3 and the humerus solid clamping stabilizer 4 at the position of the proximal humerus support 3 are located at the proximal humerus exposed during the operation, the middle section stabilizer 5 and the humerus solid clamping stabilizer 4 at the position of the middle section stabilizer 5 are located at the middle section of the humerus, and the distal humerus support 2 and the humerus solid clamping stabilizer 4 at the position of the distal humerus support 2 are located at the distal end of the humerus. After the electric servo motor 42 is controlled to drive the humerus solid clamping stabilizer 4 to rotate as a whole, the humerus is located in the gap between the clamping arms 47, the gears 45 are controlled to rotate by the driving motor 44, and the meshing relationship between the gears 45 is used to drive the pulling arms 46 to move closer or farther from each other, so that the pulling arms 46 pull the clamping arms 47 closer or farther from each other, and then the clamping arms 47 approaching each other clamp the outer surface of the humerus, thereby fixing each section of the humerus.
[0028] After the locking bolt 22 and the limiting rod 27 are fixed in the internal through hole of the main support 1, the servo motor 23 drives the rotating support 21 to rotate, thereby driving the humeral solid clamping stabilizer 4 at the end of the screw 24 to adjust the angle of the distal end of the humerus, and at the same time, the humeral solid clamping stabilizer 4 at the end of the screw 24 can also adjust the angle of the humerus slightly. After the humeral solid clamping stabilizer 4 at the end of the humeral proximal support 3 clamps the proximal end of the humerus, the sliding rod 36 is controlled to slide inside the arc rod 32, and the small servo motor 35 controls the rotation of the connecting column 34 to change the angle and position of the proximal end of the humerus.
[0029] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone should be aware that any structural changes made under the inspiration of the present invention, and any technical solutions that are the same or similar to the present invention, fall within the protection scope of the present invention. Finally, it should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the restrictive conditions that can be implemented in this application, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects that can be produced by this application and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in this application.
Claims
1. A medical rapid reduction and internal fixation system for proximal humeral fractures, comprising a main support (1), characterized in that: A humeral distal support member (2) is arranged at the front bottom of the main support (1), a middle section stabilizing rod (5) is arranged at the front middle section of the main support (1), a humeral proximal support member (3) is arranged at the front top area of the main support (1), and a humeral solid clamping stabilizer (4) is arranged on the ends of the humeral distal support member (2), the humeral proximal support member (3) and the middle section stabilizing rod (5) facing the humerus; The humeral distal support member (2) comprises a rotating bracket (21), a rotating shaft (26) fixed at the upper and lower ends of the rotating bracket (21), and a screw (24) penetrating the interior of the rotating bracket (21); a locking bolt (22) penetrating the main bracket (1) is arranged at the bottom end of the rotating bracket (21); a limiting rod (27) is sleeved on the outer ring of the rotating shaft (26) at the top; an end of the limiting rod (27) away from the rotating shaft (26) at the top penetrates the rotating bracket (21); a servo motor (23) is fixedly connected to the top of the locking bolt (22); an output shaft of the servo motor (23) is connected to the bottom end of the rotating shaft (26) at the bottom through a coupling; The humeral proximal support member (3) comprises a fixed rod (31) penetrating the rotating bracket (21), an arc-shaped rod (32) fixed to the front end of the fixed rod (31), and a sliding rod (36) slidably arranged inside the arc-shaped rod (32), a small servo motor (35) being arranged on the top of the sliding rod (36), a rotating column (33) being connected to the bottom end of the sliding rod (36), and a connecting column (34) penetrating one end of the rotating column (33) facing the humerus; The humeral solid clamping stabilizer (4) comprises a U-shaped shell (41), two gears (45) arranged in the inner cavity of the U-shaped shell (41) in a mirror-symmetrical manner, and two clamping arms (47) arranged in the inner cavity of the U-shaped shell (41) in a mirror-symmetrical manner, wherein a pulling arm (46) is hingedly connected to the outer ring surface of the gear (45), and the end of the pulling arm (46) away from the gear (45) is hingedly connected to the outer side wall of the clamping arm (47), a driving motor (44) is installed at the bottom of the U-shaped shell (41), and the output shaft of the driving motor (44) is fixedly connected to the bottom end of the gear (45) on the right side through a coupling, and an electric control servo motor (42) is installed on the side of the U-shaped shell (41) away from the clamping arm (47).
2. A medical rapid reduction and internal fixation system for proximal humeral fractures according to claim 1, characterized in that: The main support (1) is provided with a plurality of through holes arranged at equal distances therefrom; the limiting rod (27) and the locking bolt (22) have one end away from the rotating support (21) passing through the through hole; one end of the middle stabilizing rod (5) passing through the through hole; and one end of the fixing rod (31) away from the arc rod (32) passing through the through hole.
3. The rapid reduction and internal fixation system for medical proximal humeral fracture according to claim 1, characterized in that: The middle section stabilizing rod (5) comprises a cylinder with a threaded section and a nut sleeved on the threaded section of the cylinder. The cylinder is located in the front side of the main support (1) and is penetrated by a support column. The end of the support column is fixedly connected to the side wall of the U-shaped shell (41) of the middle section.
4. The rapid reduction and internal fixation system for medical proximal humeral fracture according to claim 1, characterized in that: The rotating bracket (21) has a plurality of circular holes for the screw rod (24) to pass through at a medium distance inside, the end of the locking bolt (22) away from the servo motor (23) passes through the through hole inside the main bracket (1), and the servo motor (23) is screwed with a bolt on the section located at the rear side of the main bracket (1).
5. The medical rapid reduction and internal fixation system for proximal humeral fracture according to claim 1, characterized in that: Nuts (25) are screwed onto the sections of the screw rod (24) located outside the rotating bracket (21), and the sides of the nuts (25) that are close to each other are in close contact with the outer side wall of the rotating bracket (21).
6. The medical rapid reduction and internal fixation system for proximal humeral fracture according to claim 1, characterized in that: A through hole is provided inside the limiting rod (27) for the top rotating shaft (26) to pass through, and a bearing that will later match the rotating shaft (26) is installed inside the through hole.
7. A medical rapid reduction and internal fixation system for proximal humeral fractures according to claim 1, characterized in that: A sliding groove is provided inside the arc-shaped rod (32) for the sliding rod (36) to slide along the arc, and a clamping block is fixed on the outer surface of the small servo motor (35). The side wall of the clamping block contacts the outer surface of the arc-shaped rod (32) and is used to limit the rotation of the small servo motor (35) so that the outer shell rotates accordingly.
8. The medical rapid reduction and internal fixation system for proximal humeral fracture according to claim 1, characterized in that: A fastening nut (37) is screwed on the section of the sliding rod (36) located below the arc rod (32), a through hole for the connecting rod (34) to pass through is provided inside the rotating column (33), and a nut is provided on the section of the connecting column (34) located outside the through hole.
9. The medical rapid reduction and internal fixation system for proximal humeral fracture according to claim 1, characterized in that: A base (43) is fixedly connected to the bottom surface of the U-shaped housing (41), and an opening for embedding a drive motor (44) is provided inside the base (43).
10. The medical rapid reduction and internal fixation system for proximal humeral fracture according to claim 1, characterized in that: The gears (45) mesh with each other, and the sides of the clamping arms (47) that are close to each other are in contact with the outer surface of the humerus.