Combined rod clamp type orthopaedic external fixation support pelvic system

Abstract

The invention discloses a combined rod clamp type orthopedics department external fixation support pelvic system which comprises a supporting mechanism, a mapping mechanism, a clamping module, an inserting mechanism and a side wall clamping mechanism, the supporting mechanism comprises a supporting rod, the appearance of the supporting rod is trapezoidal, and the opening position of the bottom of the supporting rod corresponds to the lying waist position of a patient; the inner side of the bevel edge of the supporting rod is placed on the two sides of the lumbar vertebra of the patient in a lifting and clamping mode, an extension sleeve matched with the waistline size of the patient is arranged in the middle of the supporting rod, the extension sleeve telescopically controls the supporting rod and is attached to the waistline of the patient, and a mapping mechanism is arranged in the middle of the extension sleeve and projects and maps a lumbar vertebra CT image through a projection lens. The adopted extension sleeve and the supporting rod are placed on the specific pelvis position, based on the front-back extension of the corresponding meshing sleeve and the rod body of the Z-axis positioning rod, one end of the corresponding meshing sleeve is pushed to correspondingly stretch out and draw back, and the front-back pushing displacement on the position of the Z-axis positioning rod in the later period is completed.

Description

Technical Field

[0001] This invention relates to the field of medical technology, specifically to a combined rod-clamp type orthopedic external fixation pelvic system. Background Technology

[0002] Orthopedics is a branch of medicine that focuses on the diagnosis and treatment of diseases and injuries of the bones, joints, muscles, ligaments, and related neurovascular systems, covering trauma, degenerative diseases, congenital malformations, and sports injuries. Treatment requires a combination of conservative therapies, surgical interventions, and rehabilitation training, with an emphasis on functional recovery and improved quality of life.

[0003] Among the retrieved patent applications, the Chinese patent with patent number "202221464632.X" discloses a relatively mature technology entitled "A Pelvic Fixation and Correction Belt Structure." It describes that "This utility model relates to a pelvic fixation and correction belt structure, belonging to the technical field of human pelvic protection devices, including a pelvic belt with adhesive lint fixation belt I, a pelvic fixation belt II on the side of the pelvic belt with adhesive lint fixation belt I, and a Velcro closure II on the inner end of the pelvic fixation belt II that is movably attached to the outer end of the pelvic belt with adhesive lint fixation belt I." The pelvic belt with adhesive lint fixation strap I and pelvic fixation strap II are provided with a pull strap limiting buckle II and a pull strap limiting buckle III. Fixing straps are provided between the pelvic belt with adhesive lint fixation strap I and the pull strap limiting buckle II, and between the pelvic fixation strap II and the pull strap limiting buckle III. A length adjustment strap II is provided between the pelvic belt with adhesive lint fixation strap I and the fixing straps, passing sequentially through the pull strap limiting buckle III and the pull strap limiting buckle II and extending to the middle of the outer side of the pelvic belt with adhesive lint fixation strap I. This design features simple structure, convenient length adjustment, and high comfort. It solves the problems of poor versatility and low structural strength in length adjustment.

[0004] In addition, the listed patent documents have the following drawbacks: Currently, most commonly used pelvic external fixators in clinical practice adopt a one-piece or simple assembly structure, mainly made of stainless steel. Their structures are relatively simple, with limited adjustability and mechanical adaptability. Common pelvic external fixators are often concentrated in the anterior superior iliac spine or posterior iliac region, but they often cannot simultaneously achieve multi-directional mechanical control (such as compression and traction), and lack good lightweight and biocompatibility combinations. Their fixed structure prevents flexible combinations based on the patient's pelvic shape and fracture type. The limited material and weight result in poor patient comfort, limited mechanical adjustment capabilities, difficulty in achieving precise compression and traction, and restricted fixation point selection, making multi-planar stable fixation difficult. Summary of the Invention

[0005] The purpose of this invention is to provide a combined rod-clamp type orthopedic external fixation pelvic system to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a combined rod-clamp type orthopedic external fixation pelvic system, comprising a support mechanism, a mapping mechanism, a clamping module, a plugging mechanism, and a side wall clamping mechanism. The support mechanism includes a support rod, which is trapezoidal in shape with an open bottom. The position of the bottom opening of the support rod corresponds to the position of the patient's lumbar region when lying flat. The inner side of the inclined edge of the support rod supports and clamps the patient's lumbar spine on both sides. An extension sleeve adapted to the patient's lumbar circumference is sleeved in the middle of the top crossbeam of the support rod. The extension sleeve controls the two inclined edges of the support rod to fit against the patient's lumbar circumference. A mapping mechanism is provided in the middle of the extension sleeve. The mapping mechanism projects and maps the patient's lumbar spine CT images through a projection lens; The mapping mechanism includes a limiting sleeve installed in the middle of the extension sleeve, a transverse support rod installed on the outer peripheral surface of the limiting sleeve, and fastening screws inserted through the surface of the transverse support rod; It also includes a clamping module, which extends and is placed on the top of the patient's lumbar spine, and the position of the insertion mechanism is adjusted by loosening the Z-axis positioning rod; The Z-axis positioning rod is provided in two parts, which are respectively clamped in parallel on the top two sides of the support rod. The axial direction of the Z-axis positioning rod is perpendicular to the axial direction of the support rod. The connection between the two Z-axis positioning rods and the support rod is also provided with a telescopic buckle, which is tightened by the Z-axis positioning rod to adjust the position of the support rod; The insertion mechanism has two rods, which are respectively fixed to the side walls of the two Z-axis positioning rods. The insertion mechanism is suspended by the two Z-axis positioning rods and corresponds to the position of the skin at the top of the patient's lumbar spine. The insertion mechanism includes bone nails set on both sides of the Z-axis positioning rods. The two bone nails extend down through the clamps and abut into the pelvic bone of the patient lying flat. The side wall clamping mechanism is symmetrically arranged on the two inclined sides of the support rod. The contact end between the side wall clamping mechanism and the support rod is provided with a limiting sleeve. The limiting sleeve adjusts the tightness of the connection between the support rod and the side wall clamping mechanism through a damping nut.

[0007] As a preferred embodiment of the present invention: an L-shaped bracket is fixedly installed in the middle of the transverse support rod, and toughening strips are respectively provided on the surface edge of the L-shaped bracket. A projector mounting plate is provided at the end of the L-shaped bracket rod. A projector is mounted on the surface of the projector mounting plate by an adapter screw. The projector includes a housing, and a projection lens is provided at the bottom of the housing facing the patient. A lens is provided at the bottom center of the projection lens. The position of the projected image of the projection lens corresponds to the position of the lumbar spine of the patient lying flat on the operating table.

[0008] As a preferred embodiment of the present invention: a projection tube is provided on the top of the projector, the image transmission area of ​​the projection tube corresponds to the terminal position used for identification and positioning, the image of the projector is matched with the electronic position of the patient's three-dimensional pelvis through a set positioning point, an imaging lens is provided on the top of the projection lens, a conical cover is provided on the outside of the imaging lens, a positioning point capture module is provided in the middle of the conical cover, the positioning point capture module locates and captures the point between the bone screw and the projected image, triggering the positioning point to change color, the top of the conical cover is the projection end, and a Micro-OLED screen is provided, the image display end of the Micro-OLED screen is electrically connected to an external three-dimensional model reading unit via an HDMI cable.

[0009] As a preferred embodiment of the present invention: one end of the projection tube is connected to an external terminal electrical signal via a wire, and the mapping end of the lens is matched with the size of the projection onto the patient's pelvis; The projector is equipped with a point-triggered color-changing unit. The projector matches the position of the mirror image projected by the lens, and the auxiliary clamping module positions the pelvis, clamps the designated point of the pelvis, and avoids arteries.

[0010] As a preferred embodiment of the present invention: the clamping module includes two Z-axis positioning rods slidably disposed on both sides of the top of the support rod, and the two Z-axis positioning rods are provided with engaging sleeves on the sides of the rods. The engaging sleeves are provided with limiting components on the sides of the sides of the engaging sleeves, and the limiting components are provided with conical sleeves in the middle. The upper and lower ends of the conical sleeves are engaged by positioning knobs.

[0011] As a preferred embodiment of the present invention: a sleeve rod is sleeved in the middle of the limiting component, and a bolt hole is opened on the side of the limiting component. A bolt is inserted through the bolt hole, and one end of the bolt is fixed to the sleeve rod. The bottom of the sleeve rod has a slide rail, the bottom of the slide rail is equipped with a limit slider, and the bottom of the limit slider is equipped with an extension component. The extension assembly has two members, and a sliding sleeve rod is slidably sleeved on the surface of the two extension assemblies. An extension rod is connected between the two sliding sleeve rods, and an adjustment rod is sleeved in the middle of the extension rod.

[0012] As a preferred embodiment of the present invention: a limiter is provided at the connection between the bone nail and the sliding sleeve, a limit knob is installed on the surface of the limiter, a limit clamp is installed on the side wall of the limiter, the limit clamp is clamped to the middle of the bone nail, a laser mounting collar is provided at the top of the bone nail, and a laser locator is connected to the side wall of the laser mounting collar through a connecting crossbar.

[0013] As a preferred embodiment of the present invention: the side wall clamping mechanism includes a limiting sleeve installed on the side wall of the support rod, a damping nut is provided on the side of the limiting sleeve, a pelvic limiting nail is provided on the side of the damping nut, a concave support frame is sleeved in the middle of the pelvic limiting nail, and a laser emitter body is provided on the top of the concave support frame. The laser emitter body has a laser emitting head installed on its side wall, and the two support rods are also symmetrically provided with side recognition mechanisms at their bent tube positions.

[0014] As a preferred embodiment of the present invention: the side recognition mechanism includes: an access base installed at the bending position of the support rod, a wireless transceiver probe provided on the back of the access base, one end of the wireless transceiver probe being connected to a wireless transceiver sensor on the projector, a telescopic tube being connected to the side wall of the access base, a plurality of telescopic grooves being opened on the outer wall of the telescopic tube, and a projection pad being installed at the opening of the telescopic tube.

[0015] As a preferred embodiment of the present invention: the side wall of the projection pad is provided with a projection pad, a spring tube is connected to the middle position of the projection pad, a data transmission line is provided inside the opening of the spring tube, and one end of the data transmission line is electrically connected to the 3D model projection terminal.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1) By using an extension sleeve and support rod placed at a specific pelvic position, based on the corresponding engagement sleeve and the extension of the Z-axis positioning rod, one end of the engagement sleeve is pushed to extend and retract accordingly, further completing the subsequent position change of the Z-axis positioning rod, so that the bone screw is fixed in the designated pelvic position, reducing the time for multiple comparisons and adjustments, improving the intraoperative positioning efficiency. The engagement sleeve restricts the actual position of the conical sleeve, and the rod structure of the sleeve rod restricts the corresponding position, improving the flexibility of the extension position of the corresponding adjustment rod. 2) The hinge between the support rod and the corresponding adjustment base extends and changes the insertion direction of the pelvic limiting screw onto the side of the pelvis. The laser emitter and adjustment head further adjust the subsequent insertion direction of the pelvic limiting screw. The laser beam can determine the specific position of the screw in the pelvis based on the positioning point, avoiding multiple adjustments. The screw is made of carbon fiber, which is lightweight and high-strength, and has graduations on the surface for easy length adjustment. The clamping module consists of an aluminum alloy body and stainless steel fasteners for connecting the support rod and the bone screw. Made of stainless steel, it is divided into anterior superior iliac spine screws and posterior ring screws, with threads on the surface to enhance anchoring force. The adjustment mechanism is located inside the clamping module. A knob is used to move the support rod axially, thereby achieving pressure or traction. After the bone screw is implanted in the anterior superior iliac spine and posterior ring positions of the pelvis, it is connected to the support rod through the clamping module. Multiple support rods can be combined laterally or longitudinally through the clamping module to form a stable triangular or polygonal structure. The adjustment mechanism uses threaded transmission to extend and retract the support rod, thereby applying pressure or traction to the fracture ends. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the front structure of the present invention; Figure 2 This is a schematic diagram of the rear structure of the present invention; Figure 3 This is a schematic diagram of the clamping module structure of the present invention; Figure 4 This is a schematic diagram of the support rod structure of the present invention; Figure 5 This is a schematic diagram of the side recognition mechanism structure of the present invention; Figure 6 This is a schematic diagram of the L-shaped support structure of the present invention; Figure 7 This is a schematic diagram of the insertion mechanism of the present invention; Figure 8 This is a schematic diagram of the projection tube structure of the present invention; Figure 9 This is a schematic diagram of the bolt structure of the present invention; Figure 10 This is a schematic diagram of the conical cover structure of the present invention; Figure 11 This is a schematic diagram of the adjusting rod structure of the present invention.

[0018] In the diagram: 1. Support mechanism; 11. Support rod; 12. Extension sleeve; 2. Mapping mechanism; 21. Limiting sleeve; 22. Horizontal support rod; 23. Fastening screw; 24. L-shaped bracket; 25. Toughening strip; 26. Projector mounting plate; 27. Projector; 28. Projection lens; 281. Imaging lens; 282. Conical cover; 283. Positioning point capture module; 284. Micro-OLED screen; 285. HDMI cable; 29. ​​Lens; 291. Projection tubing; 3. Clamping module; 31. Z-axis positioning rod; 32. Engaging sleeve; 33. Limiting assembly; 34. Conical sleeve; 35. Positioning knob; 36. Sleeve rod; 361. Bolt; 37. Extension assembly; 371. Slide rail; 372. Limiting slider; 38. Sliding sleeve rod; 39. Extension rod; 391. Adjusting rod; 4. Insertion mechanism; 41. Bone nail; 42. Limiting clamp; 43. Laser mounting collar; 44. Connecting crossbar; 45. Laser positioner; 46. Limiting knob; 47. Limiter; 5. Side wall clamping mechanism; 51. Limiting sleeve; 52. Damping nut; 53. Pelvic limiting pin; 54. Concave support frame; 55. Laser emitter head; 56. Laser emitter body; 6. Side recognition mechanism; 61. Access base; 62. Wireless transceiver probe; 63. Telescopic tube; 64. Telescopic cavity; 65. Projection pad; 66. Projection display pad; 67. Bourdon tube; 68. Data transmission line. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-11 The present invention provides a technical solution: a combined rod-clamp type orthopedic external fixation pelvic support system, including a support mechanism 1, a mapping mechanism 2, a clamping module 3, a plugging mechanism 4 and a side wall clamping mechanism 5. The support mechanism 1 includes a support rod 11, which is trapezoidal in shape with an open bottom. The position of the bottom opening of the support rod 11 corresponds to the position of the patient's lumbar region when lying flat. The inner side of the inclined side of the support rod 11 supports and clamps the patient's lumbar spine on both sides. An extension sleeve 12 adapted to the patient's waist size is sleeved in the middle of the top crossbeam of the support rod 11. The extension sleeve 12 controls the two inclined sides of the support rod 11 to fit against the patient's waist. The mapping mechanism 2 is provided in the middle of the extension sleeve 12. The mapping mechanism 2 projects and maps the patient's lumbar spine CT images through the projection lens 28; The mapping mechanism 2 includes a limiting sleeve 21 installed in the middle of the extension sleeve 12. A transverse support rod 22 is installed on the outer peripheral surface of the limiting sleeve 21, and fastening screws 23 are inserted through the surface of the transverse support rod 22. It also includes a clamping module 3, which extends and is placed on the top of the patient's lumbar spine. The position of the insertion mechanism 4 is adjusted by loosening the Z-axis positioning rod 31. Two Z-axis positioning rods 31 are provided. The two Z-axis positioning rods 31 are respectively parallel and snapped into the top two sides of the support rod 11. The axial direction of the Z-axis positioning rods 31 is perpendicular to the axial direction of the support rod 11. The connection between the two Z-axis positioning rods 31 and the support rod 11 is also provided with a telescopic buckle. The buckle is tightened by the Z-axis positioning rods 31 to adjust the position of the support rod 11. The insertion mechanism 4 has two rods, which are fixed to the side walls of the two Z-axis positioning rods 31 respectively. The insertion mechanism 4 is suspended by the two Z-axis positioning rods 31 and corresponds to the position of the skin on the top of the patient's lumbar spine. The insertion mechanism 4 includes bone nails 41 set on both sides of the Z-axis positioning rods 31. The two bone nails 41 extend downward through the clamps and abut into the pelvic bone of the patient lying flat. The side wall clamping mechanism 5 is symmetrically arranged on the two inclined sides of the support rod 11. The contact end between the side wall clamping mechanism 5 and the support rod 11 is provided with a limiting sleeve 51. The limiting sleeve 51 adjusts the tightness of the connection between the support rod 11 and the side wall clamping mechanism 5 through the damping nut 52.

[0021] In this embodiment: an L-shaped bracket 24 is fixedly installed in the middle of the transverse support rod 22. The surface edge of the L-shaped bracket 24 is provided with toughening strips 25. The end of the L-shaped bracket 24 is provided with a projector mounting plate 26. A projector 27 is mounted on the surface of the projector mounting plate 26 by an adapter screw. The projector 27 includes a housing. The bottom of the housing is provided with a projection lens 28 facing the patient. A lens 29 is provided in the middle of the bottom end of the projection lens 28. The position of the projected image of the projection lens 28 corresponds to the position of the lumbar spine of the patient lying flat on the operating table.

[0022] The projector 27 and projection lens 28 are used to project and magnify the image on the Micro-OLED screen 284 and display it on the surface of the spine when the patient is lying flat.

[0023] In this embodiment: a projection tube 291 is provided on the top of the projector 27. The image transmission area of ​​the projection tube 291 corresponds to the terminal position used for identification and positioning. The image of the projector 27 is matched with the electronic position of the patient's three-dimensional scanned pelvis through the set positioning point. An imaging lens 281 is provided on the top of the projection lens 28. A conical cover 282 is provided on the outside of the imaging lens 281. A positioning point capture module 283 is provided in the middle of the conical cover 282. The positioning point capture module 283 positions and captures the point between the bone screw 41 and the projected image, triggering the positioning point to change color. The top of the conical cover 282 is the projection end, which is provided with a Micro-OLED screen 284. The image display end of the Micro-OLED screen 284 is electrically connected to the external three-dimensional model reading unit via an HDMI cable 285.

[0024] The lens 29 and one end of the projection tube 291 are used to realize the feedback connection for 3D model display, while the real-time model display is connected to the computer computing terminal via HDMI cable.

[0025] In this embodiment: one end of the projection tube 291 is connected to an external terminal electrical signal via a wire, and the mapping end of the lens 29 is matched with the size of the projection onto the patient's pelvis; The projector 27 is equipped with a point-triggered color-changing unit. The projector 27 matches the position of the mirror positioning point projected by the lens 29. The auxiliary clamping module 3 positions the pelvis, clamps the designated point of the pelvis, and avoids arteries.

[0026] The combination of lens 29 and clamping module 3 can cause the image to be squeezed after it is lowered, resulting in a color change.

[0027] In this embodiment: the clamping module 3 includes two Z-axis positioning rods 31 that are slidably disposed on both sides of the top of the support rod 11. The two Z-axis positioning rods 31 are provided with engagement sleeves 32 on the sides of their rods. The engagement sleeves 32 are provided with limit components 33 on their sides. The limit components 33 are provided with a conical sleeve 34 in the middle. The upper and lower ends of the conical sleeve 34 are engaged by positioning knobs 35.

[0028] The engaging sleeve 32 and the limiting component 33 cooperate with each other, and the conical sleeve 34 and the positioning knob 35 cooperate with each other to limit the Z-axis positioning rod 31.

[0029] In this embodiment: a sleeve rod 36 is sleeved in the middle of the limiting component 33, and a bolt hole is opened on the side of the limiting component 33. A bolt 361 is installed inside the bolt hole and passes through it. One end of the bolt 361 is fixed to the sleeve rod 36. The bottom of the sleeve rod 36 has a slide rail 371, the bottom of the slide rail 371 is equipped with a limit slider 372, and the bottom of the limit slider 372 is equipped with an extension component 37. The extension component 37 has two members, and the surfaces of the two extension components 37 are slidably sleeved with sliding sleeve rods 38. An extension rod 39 is connected between the two sliding sleeve rods 38, and an adjustment rod 391 is sleeved in the middle of the extension rod 39.

[0030] The adjustable rod 391 extends forward and backward, and the sleeve rod 36 extends to expand, making it easy to adapt the bracket to the patient's waist size.

[0031] In this embodiment: a limiter 47 is provided at the connection between the bone nail 41 and the sliding sleeve 38. A limiter knob 46 is installed on the surface of the limiter 47. A limiter clamp 42 is installed on the side wall of the limiter 47. The limiter clamp 42 is clamped to the middle of the bone nail 41. A laser mounting collar 43 is provided at the top of the bone nail 41. A laser locator 45 is connected to the side wall of the laser mounting collar 43 through a connecting crossbar 44.

[0032] The limiter 47 and the laser locator 45 work together to reserve a positioning point for the bone nail 41 to be inserted into the specific pelvic position, ensuring that the insertion path positioning point is more accurate.

[0033] In this embodiment, the side wall clamping mechanism 5 includes a limiting sleeve 51 installed on the side wall of the support rod 11. A damping nut 52 is provided on the side of the limiting sleeve 51. A pelvic limiting nail 53 is provided on the side of the damping nut 52. A concave support frame 54 is sleeved in the middle of the pelvic limiting nail 53. A laser emitter body 56 is provided on the top of the concave support frame 54. A laser emitting head 55 is installed on the side wall of the laser emitter body 56, and a side recognition mechanism 6 is symmetrically provided at the bending tube position of the two support rods 11.

[0034] A concave support frame 54 and a laser emitter 55 are used for information feedback, and finally, the concave support frame 54 is used to perform sensing and analysis.

[0035] In this embodiment: the side recognition mechanism 6 includes: an access base 61 installed at the bent position of the support rod 11, a wireless transceiver probe 62 provided on the back of the access base 61, one end of the wireless transceiver probe 62 being connected to the wireless transceiver sensor on the projector 27, a telescopic tube 63 being connected to the side wall of the access base 61, a plurality of telescopic grooves 64 being opened on the outer wall of the telescopic tube 63, and a projection pad 65 being installed at the opening of the telescopic tube 63.

[0036] The pelvic limiting nail 53 and the support rod 11 are used in combination, and the distance between them is adjusted to expand the front and back positions of the intervals.

[0037] In this embodiment: the side wall of the projection pad 65 is provided with a projection pad 66, and a spring tube 67 is connected to the middle position of the projection pad 65. A data transmission line 68 is provided inside the opening of the spring tube 67, and one end of the data transmission line 68 is electrically connected to the 3D model projection terminal.

[0038] The data transmission line 68 is inserted and bound inside the spring tube 67, and the image information is then displayed based on the function of the line.

[0039] Example 1 The specific usage of the combined rod-clamp type orthopedic external fixation pelvic support system is described in the following steps: First step: Adjust the patient's pelvis during the operation; At this point, the doctor places the support rod 11 on the surface of the operating table. The patient lies supine on the operating table, either face up or face down. Based on the length of the patient's hip bones, the doctor extends the support rod 11 using the surface of the extension sleeve 12, adjusting the spacing between the inclined sides of adjacent support rods 11 to the appropriate position. The doctor then uses the engaging sleeve 32 to extend and retract directly. By loosening the positioning knob 35, and based on the linear displacement of one end of the limiting component 33, the extension structure of the adjusting rod 391 is changed, achieving Z-axis extension of the pelvic dimensions. This utilizes a modular, lightweight, and flexibly adjustable pressure and traction system. The pelvic external fixation system uses multiple positioning screws. The doctor then transmits the 3D model to the projector 27 via the machine. The CT image is projected using one end of the projection lens 28. One end of the projection tube 291 is connected, and the image is projected using the lens 29. The image is displayed at one end of the projection tube 291 and the lens 29. The L-shaped bracket 24 supports the hinge and limits the fixation. The fastening screw 23 and the horizontal strut 22 limit the fixation. Based on the projection tube 291, the 3D model data is projected onto the position of the patient's pelvis through the corresponding data connection signal, and the information is directly fed back to the specific projection image point. Step 2: Avoid other core neural pathways by using the three-dimensional positioning points; At this point, the doctor extends the extension component 37 back and forth, adjusts its tightness according to the specific positioning knob 35, and completes the subsequent extension of the rod of the adjustment rod 391 back and forth. Based on the extension of the rod of the adjustment rod 391, it is injected into the designated location, and the corresponding sleeve rod 36 is used to achieve back and forth lifting and lowering. The positioning insertion is achieved based on the projected image. At this time, the projected image points will change color to remind the doctor that the two bone screws 41 have been positioned in place. Based on the symmetrical illumination of the laser locator 45, the unified laser detection of the corresponding equipment was further completed. Step 3: 41, serving as a bone screw on the inner side of the pelvis; At this point, the doctor can achieve axial movement of the support rod 11 by turning a knob, thereby realizing the function of applying pressure or traction. The modular rod clamp structure allows for multi-directional modular assembly, and the built-in adjustment mechanism enables precise pressure and traction functions; it is suitable for a dual-plane fixation structure for the anterior superior iliac spine and the posterior pelvic ring. Step 4: Locating the lateral pelvis; At this point, the doctor, based on the hinge of the limiting sleeve 51, changes the hinge of the pelvic limiting nail 53. At this time, one end of the laser emitter body 56 is hinged. By using the corresponding concave support frame 54 to achieve detection and sensing, the doctor only needs to turn on the projection pad 66 and one end of the data transmission line 68 to project the image onto the side of the pelvis again. The image highlighted by the projection pad 65 and the projection pad 66 allows the doctor to locate the position to be cut. Finally, the located point is combined with the precise 3D image of the human pelvis from the three-dimensional precision scan. This makes the adjustment of the pelvic limiting nail 53 more accurate. Based on the information obtained from the projection image feedback, the doctor can accurately determine where to insert the needle. In addition, the projection detection structure on both sides can be replaced with a detector with scanning detection function. Doctors wearing VR glasses can accurately insert the pelvic limiting nail 53 and bone nail 41 into specific positions through the small area of ​​the pelvis, avoiding intraoperative risks and avoiding important meridians or blood vessels.

[0040] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A combined rod-clamp type orthopedic external fixation pelvic system, comprising a support mechanism (1), a mapping mechanism (2), a clamping module (3), a plugging mechanism (4), and a sidewall clamping mechanism (5), characterized in that, The support mechanism (1) includes a support rod (11), which is a trapezoid with an open bottom. The position of the bottom opening of the support rod (11) corresponds to the position of the patient's lumbar region when lying flat. The inner side of the inclined side of the support rod (11) is supported and clamped on both sides of the patient's lumbar spine. An extension sleeve (12) adapted to the patient's waist size is sleeved in the middle of the top crossbeam of the support rod (11). The extension sleeve (12) controls the extension and retraction of the two inclined sides of the support rod (11) to fit against the patient's waist. A mapping mechanism (2) is provided in the middle of the extension sleeve (12). The mapping mechanism (2) projects and maps the patient's lumbar spine CT image through the projection lens (28); The mapping mechanism (2) includes a limiting sleeve (21) installed in the middle of the extension sleeve (12), and a transverse support rod (22) is installed on the outer peripheral surface of the limiting sleeve (21), and fastening screws (23) are inserted through the surface of the transverse support rod (22). It also includes a clamping module (3), which extends and is placed on the top of the patient's lumbar spine. The position of the insertion mechanism (4) is adjusted by loosening the Z-axis positioning rod (31). The Z-axis positioning rod (31) is provided in two parts. The two Z-axis positioning rods (31) are respectively clamped in parallel on the top two sides of the support rod (11). The axial direction of the Z-axis positioning rod (31) is perpendicular to the axial direction of the support rod (11). The connection between the two Z-axis positioning rods (31) and the support rod (11) is also provided with a telescopic buckle, which is tightened by the Z-axis positioning rods (31) to adjust the position of the support rod (11); The insertion mechanism (4) has two rods, which are respectively fixed to the side walls of the two Z-axis positioning rods (31). The insertion mechanism (4) is suspended by the two Z-axis positioning rods (31) and corresponds to the position of the skin on the back of the patient's lumbar spine. The insertion mechanism (4) includes bone nails (41) set on both sides of the Z-axis positioning rods (31). The two bone nails (41) extend down through the clamps and abut into the pelvic bone of the patient lying flat. The side wall clamping mechanism (5) is symmetrically arranged on the two inclined sides of the support rod (11). The contact end of the side wall clamping mechanism (5) and the support rod (11) is provided with a limiting sleeve (51). The limiting sleeve (51) adjusts the tightness of the connection between the support rod (11) and the side wall clamping mechanism (5) through the damping nut (52).

2. The combined rod-clamp type orthopedic external fixation pelvic system according to claim 1, characterized in that: An L-shaped bracket (24) is fixedly installed in the middle of the transverse support rod (22). The surface edge of the L-shaped bracket (24) is provided with toughening strips (25). The end of the L-shaped bracket (24) is provided with a projector mounting plate (26). A projector (27) is mounted on the surface of the projector mounting plate (26) by an adapter screw. The projector (27) includes a housing. The bottom of the housing is provided with a projection lens (28) facing the patient. A lens (29) is provided in the middle of the bottom end of the projection lens (28). The position of the projected image of the projection lens (28) corresponds to the position of the lumbar spine of the patient lying flat on the operating table.

3. The combined rod-clamp type orthopedic external fixation pelvic system according to claim 2, characterized in that: The top of the projector (27) is provided with a projection tube (291). The image transmission area of ​​the projection tube (291) corresponds to the terminal position used for identification and positioning. The image of the projector (27) is matched with the electronic position of the patient's three-dimensional scanned pelvis through the set positioning point. The top of the projection lens (28) is provided with an imaging lens (281). The outside of the imaging lens (281) is provided with a cone-shaped cover (282). The middle of the cone-shaped cover (282) is provided with a positioning point capture module (283). The positioning point capture module (283) positions and captures the point between the bone screw (41) and the projected image, triggering the positioning point to change color. The top of the cone-shaped cover (282) is the projection end, and a Micro-OLED screen (284) is provided. The image display end of the Micro-OLED screen (284) is electrically connected to the external three-dimensional model reading unit via an HDMI cable (285).

4. The combined rod-clamp type orthopedic external fixation pelvic system according to claim 3, characterized in that: One end of the projection tube (291) is connected to an external terminal electrical signal via a wire, and the mapping end of the lens (29) is matched with the size of the projection onto the patient's pelvis. The projector (27) is equipped with a point-triggered color-changing unit. The projector (27) matches the position of the mirror positioning point projected by the lens (29). The auxiliary clamping module (3) positions the pelvis, clamps the designated point of the pelvis, and avoids arteries.

5. The combined rod-clamp type orthopedic external fixation pelvic system according to claim 1, characterized in that: The clamping module (3) includes two Z-axis positioning rods (31) that are slidably disposed on the two sides of the top of the support rod (11). The two Z-axis positioning rods (31) are provided with engagement sleeves (32) on the sides of the rods. The engagement sleeves (32) are provided with limit components (33) on the sides. The limit components (33) are provided with a conical sleeve (34) in the middle. The upper and lower ends of the conical sleeve (34) are engaged by positioning knobs (35).

6. The combined rod-clamp type orthopedic external fixation pelvic system according to claim 5, characterized in that: The limiting component (33) is fitted with a sleeve rod (36) in the middle. The limiting component (33) has a bolt hole on its side. A bolt (361) is installed inside the bolt hole and passes through it. One end of the bolt (361) is fixed to the sleeve rod (36). The bottom of the sleeve (36) has a slide rail (371), the bottom of the slide rail (371) is equipped with a limit slider (372), and the bottom of the limit slider (372) is equipped with an extension component (37). The extension component (37) has two members, and a sliding sleeve rod (38) is slidably sleeved on the surface of the two extension components (37). An extension rod (39) is connected between the two sliding sleeve rods (38), and an adjustment rod (391) is sleeved in the middle of the extension rod (39).

7. A combined rod-clamp type orthopedic external fixation pelvic system according to claim 6, characterized in that: A limiter (47) is provided at the connection between the bone nail (41) and the sliding sleeve (38). A limit knob (46) is installed on the surface of the limiter (47). A limit clamp (42) is installed on the side wall of the limiter (47). The limit clamp (42) is clamped to the middle of the bone nail (41). A laser mounting collar (43) is provided at the top of the bone nail (41). A laser locator (45) is connected to the side wall of the laser mounting collar (43) through a connecting crossbar (44).

8. The combined rod-clamp type orthopedic external fixation pelvic system according to claim 1, characterized in that: The sidewall clamping mechanism (5) includes a limiting sleeve (51) installed on the sidewall of the support rod (11). A damping nut (52) is provided on the side of the limiting sleeve (51). A pelvic limiting nail (53) is provided on the side of the damping nut (52). A concave support frame (54) is sleeved in the middle of the pelvic limiting nail (53). A laser emitter body (56) is provided on the top of the concave support frame (54). The laser emitter body (56) is equipped with a laser emitter head (55) on its side wall, and the two support rods (11) are also symmetrically provided with side recognition mechanisms (6) at the bending tube positions.

9. A combined rod-clamp type orthopedic external fixation pelvic system according to claim 8, characterized in that: The side recognition mechanism (6) includes: an access base (61) installed at the bending position of the support rod (11), a wireless transceiver probe (62) is provided on the back of the access base (61), one end of the wireless transceiver probe (62) is connected to the wireless transceiver sensor on the projector (27), a telescopic tube (63) is connected to the side wall of the access base (61), a plurality of telescopic grooves (64) are opened on the outer wall of the telescopic tube (63), and a projection pad (65) is installed at the opening of the telescopic tube (63).

10. A combined rod-clamp type orthopedic external fixation pelvic system according to claim 9, characterized in that: The side wall of the projection pad (65) is provided with a projection pad (66), and there is a spring tube (67) in the middle of the projection pad (65). A data transmission line (68) is provided in the opening of the spring tube (67), and one end of the data transmission line (68) is electrically connected to the 3D model projection terminal.

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