CN108095811B - Long bone fracture restoring force testing arrangement - Google Patents
Long bone fracture restoring force testing arrangement Download PDFInfo
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- CN108095811B CN108095811B CN201810062235.1A CN201810062235A CN108095811B CN 108095811 B CN108095811 B CN 108095811B CN 201810062235 A CN201810062235 A CN 201810062235A CN 108095811 B CN108095811 B CN 108095811B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
- A61B17/66—Alignment, compression or distraction mechanisms
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
- A61B2090/064—Measuring instruments not otherwise provided for for measuring force, pressure or mechanical tension
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Abstract
The invention relates to a device for testing the resetting force of long bone fracture, belonging to the technical field of medical instruments. The invention relates to a resetting force measuring device which comprises a clamping mechanism, a transverse resetting mechanism, a T-shaped connecting mechanism, a traction resetting mechanism and a lifting mechanism. The clamping mechanism is fixed above the transverse resetting mechanism through a connecting plate, the transverse resetting mechanism is connected with the traction resetting mechanism through a T-shaped connecting mechanism, and the traction resetting mechanism is installed above the hoisting mechanism. The reset force measuring device can realize transverse reset, longitudinal traction and vertical lifting movement, and has the characteristics of detachability, easy disinfection, simple structure, intellectualization and the like.
Description
Technical Field
The invention relates to a long bone fracture resetting force testing device which comprises a clamping mechanism, a transverse resetting mechanism, a T-shaped connecting mechanism, a traction resetting mechanism and a lifting mechanism. Through the coordinated motion of the clamping mechanism, the transverse resetting mechanism, the traction resetting mechanism, the lifting mechanism and the like, the far-end traction, transverse and up-and-down motion of the long bone fracture can be well realized. The invention has simple and compact design structure, detachable contact part and intelligentized mechanism movement, is suitable for preoperative resetting force test of fracture patients and resetting of fracture parts, and can improve the measuring precision of the resetting force and the working efficiency of doctors.
Background
Along with the increase of modern fracture accidents, the workload of a doctor for fracture reduction of a patient is increased sharply, during fracture reduction, the doctor needs to measure the axial reduction force of a fracture section at first, then the fracture reduction is completed by means of a reduction robot, the reduction robot at present basically adopts a parallel mechanism, so that the reduction robot has the defects of insufficient displacement and the like during the axial dislocation of reduction, an intelligent and easily-disinfected measuring device does not exist when the axial reduction force is measured in domestic hospitals at present, and a plurality of existing devices need to be manually regulated by the doctor.
Disclosure of Invention
The invention aims to design a long bone fracture resetting force testing device aiming at the defects of the prior art, and the device has the characteristics of simple and compact design structure, detachable contact part, intelligentized mechanism motion and the like.
The technical scheme adopted by the invention is as follows:
a long bone fracture resetting force testing device comprises a clamping mechanism (I), a transverse resetting mechanism (II), a T-shaped connecting mechanism (III), a traction resetting mechanism (IV) and a lifting mechanism (V). The connecting plate (1) of the clamping mechanism (I) is fixed above the transverse resetting mechanism (II) through screw connection, the transverse resetting mechanism (II) is connected with the traction resetting mechanism (IV) through a T-shaped connecting mechanism (III), and the traction resetting mechanism (IV) is installed above the lifting mechanism (V) through screw connection. The fracture reduction device is characterized in that a clamping mechanism (I) is adjusted to a proper height through a lifting mechanism (V), then a lower limb is clamped and fixed through the clamping mechanism (I), the lower limb is pulled under the action of a traction reduction mechanism (IV), the traction direction reset force is tested through a tension sensor on a connecting mechanism (III), fracture transverse reduction is completed through a transverse reduction mechanism (II), and then fracture vertical direction reduction is completed through the lifting mechanism (V).
The clamping structure (I) comprises clamping fixing parts (6 and 7) on two sides of a thigh, a leg contact bottom plate (8), a connecting plate (1), a servo motor (5), a screw rod (39) and a foot fixing part (64). The thigh two-side clamping fixing pieces (6 and 7) are synchronously driven by a lead screw (39) controlled by two small servo motors (5), the clamping fixing pieces (6 and 7) comprise two clamping frames (7) and four same rectangular blocks (6), each rectangular block (6) is connected with the clamping frame (7) through 2 screws, and patch type force sensors are attached to the rectangular blocks (6); two lead screws (39) rotate through 4L-shaped connecting plates (2) below the connecting plate (1), each lead screw (39) which is installed in parallel is provided with two lead screw sliding blocks (3) in a rotating mode, two ends of the lower side of each clamping frame (7) are fixed on the two lead screw sliding blocks (3) through screws respectively, two servo motors (5) are connected to the two lead screws (39) respectively, a thigh can be clamped through clamping fixing pieces (6 and 7) by the clamping mechanism (I), and clamping force can be monitored and adjusted in real time through a patch type force sensor.
The foot fixing piece (64) comprises h-shaped connecting pieces (11), screw rods (17), foot connecting pieces (9, 10) and 6 fixing nuts, the foot connecting pieces (9, 10) comprise foot connecting plates (9) and foot fixing rings (10), one ends of the foot fixing rings (10) are connected with one sides of the foot connecting plates (9) through hinges, the other ends of the foot fixing rings (10) are fixed with the other sides of the foot connecting plates (9) through screws, the screw rods (17) are placed in long grooves in the front ends of the connecting plates (1), the screw rods (17) are fixed on two sides of the long grooves through large nuts (13, 14), the h-shaped connecting pieces (11) are fixed at two ends of the screw rods (17) through small nuts (12, 15, 16 and 18), the h-shaped connecting pieces (11) are connected with the foot connecting plates (9) through screws, the foot fixing piece (64) can adjust the screw rods (17) located in the long grooves in the front ends of the connecting plates (1) to proper positions, then the foot fixing ring (10) is opened to place the feet of the patient into the foot connecting plate (9), and the other end of the foot fixing ring (10) is connected with the foot connecting plate (9) through a screw, so that the feet are fixed.
Horizontal canceling release mechanical system (II) includes linear guide (63), two linear push rods (22, 23), slider (24) and guide rail base (37), linear guide (63) are connected on guide rail base (37) through 3 screws, slider (24) through 4 screws with one connecting plate (1) in fixture (I) is connected, two linear push rods (22, 23) base ends are connected with guide rail base (37) through two screws respectively, and parallel arrangement's linear push rods (22, 23) push rod end is connected with slider (24) through the screw, horizontal canceling release mechanical system (II) accessible two linear push rods (22, 23) promote slider (24) and slide on linear guide (63), and slider (24) drive fixture (I) lateral shifting, realize suffering from the horizontal restoration of limb.
T type coupling mechanism (III) include two T type connecting pieces (19, 21), connecting piece (20), connecting piece (61) and force sensor (62), a guide rail base (37) in horizontal canceling release mechanical system (II) links to each other with connecting piece (20) through two T type connecting pieces (19, 21), force sensor (62) and connecting piece (61), connecting piece (20) through two screws with draw in canceling release mechanical system (IV) a lead screw nut (36) and link to each other, T type coupling mechanism (III) are used for connecting horizontal canceling release mechanical system (II) and draw canceling release mechanical system (IV) to can test the restoring force through force sensor (62).
The traction reduction mechanism (IV) comprises: the lifting mechanism comprises a lead screw (38), a lead screw nut (36), two bearing seats (25, 35), a motor connecting plate (46) and a servo motor (26), wherein the lead screw nut (36) is rotatably matched on the lead screw (38), the lead screw (38) is installed on one lifting frame (27) in the lifting mechanism (V) through the two bearing seats (25, 35), the servo motor (26) is installed on the motor connecting plate (46) through a screw, the servo motor (26) is connected with the lead screw (38), the motor connecting plate (46) is connected with the side face of one lifting frame (27) in the lifting mechanism (V) through two small-sized supporting frames (47, 48), and the traction resetting mechanism (IV) can drive the lead screw nut (38) through the servo motor (26) so as to drive the lead screw nut (36) to move back and forth and realize that an affected limb moves along a traction direction.
The lifting mechanism (V) comprises a lifting frame (27), a base (30), a connecting plate (33), a screw rod sliding block (34), a screw rod (60), a screw rod driving part and four same upright posts (29), wherein the screw rod sliding block (34) is connected with the lifting frame (27) through 6 screws, the screw rod (60) is rotationally matched with one screw rod sliding block (34), the 4 same upright posts (29) are symmetrically arranged on the base (30), the screw rod driving part comprises a servo motor (28), gears (51, 58), axial sleeves (50, 59), axial sleeves (52, 57), a shaft (49), bearings (53, 56) and a bottom cover (32), the servo motor (28) penetrates through 6 holes in the connecting plate (33) through the 6 screws to be connected with the base (30), and the gear (51) and the gear (58) are respectively arranged on the shaft (49) and the screw rod (60), and two gears are mutually meshed, the gear (51) forms axial positioning through the axial sleeve (50) and the axial sleeve (52), the gear (58) forms axial positioning through the axial sleeve (59) and the axial sleeve (57), the end cover (32) is installed on the bottom surface of the base (30) through screws, and the lifting frame (27) can be adjusted up and down according to the height of the affected limb before the resetting force test of the lifting mechanism (V), so that the clamping mechanism (I) is adjusted to a reasonable height, and the fracture vertical direction resetting can be completed in the resetting force test process.
Compared with the prior art, the invention has the following obvious and prominent substantive characteristics and remarkable advantages:
firstly, the invention can not only test the resetting force, but also complete the resetting of the fracture part, and replace the doctor to complete the resetting of the preoperative part.
The invention enables the resetting force testing device to be more intelligent, and can realize automatic lifting, automatic leg clamping, automatic traction and transverse resetting according to the height of the sickbed.
The resetting force testing device is easier to disinfect, and the leg clamping part of the device can be disassembled and disinfected before testing.
Drawings
Fig. 1 is a general structural schematic diagram of a long bone fracture resetting force testing device of the invention.
Fig. 2 is a schematic view of a clamping mechanism of the long bone fracture resetting force testing device.
Fig. 3 is a schematic view of a foot fixing structure of a clamping mechanism of the long bone fracture resetting force testing device of the invention.
Fig. 4 is a schematic diagram of a screw structure in a foot mechanism of the long bone fracture resetting force testing device of the invention.
Fig. 5 is a schematic diagram of a transverse reduction mechanism of the long bone fracture reduction force testing device.
Fig. 6 is a schematic diagram of a T-shaped connecting mechanism of a long bone fracture resetting force testing device.
Fig. 7 is a general schematic diagram of a traction mechanism and a lifting mechanism of the long bone fracture resetting force testing device.
Fig. 8 is a schematic structural view of parallel sliding rails of the long bone fracture resetting force testing device of the invention.
Fig. 9 is a schematic structural diagram of a connecting plate and a supporting frame of a traction drive motor of the long bone fracture resetting force testing device.
Fig. 10 is a schematic structural diagram of a lifting mechanism driving part of the long bone fracture resetting force testing device.
Fig. 11 is a schematic structural diagram of a bottom cover of the long bone fracture resetting force testing device of the invention.
Detailed Description
The invention is further described with reference to the following examples and drawings in the specification:
example 1:
referring to fig. 1, the long bone fracture resetting force testing device comprises a clamping mechanism (I), a transverse resetting mechanism (II), a T-shaped connecting mechanism (III), a traction resetting mechanism (IV) and a lifting mechanism (V). The method is characterized in that: the clamping mechanism (I) is connected with a sliding block (24) in the transverse resetting mechanism (II) through a connecting plate (1), the transverse resetting mechanism is connected with a screw rod sliding block (36) in the traction resetting mechanism (IV) through a T-shaped connecting mechanism (III), and the traction resetting mechanism (IV) is installed on a lifting frame (27) in the lifting mechanism (V) through bearing seats (25 and 35).
Example 2:
referring to fig. 2, the present embodiment is substantially the same as embodiment 1, and is characterized in that: the clamping structure (I) comprises clamping fixing parts (6 and 7) on two sides of a thigh, a leg contact bottom plate (8), a connecting plate (1), a servo motor (5), a screw rod (39) and a foot fixing part (64). The thigh two-side clamping fixing pieces (6 and 7) are synchronously driven by a lead screw (39) controlled by two small servo motors (5), the clamping fixing pieces (6 and 7) comprise two clamping frames (7) and four same rectangular blocks (6), each rectangular block (6) is connected with the clamping frame (7) through 2 screws, and patch type force sensors are attached to the rectangular blocks (6); two lead screws (39) rotate through 4L-shaped connecting plates (2) below the connecting plate (1), two lead screw sliders (3) are respectively rotatably matched on each lead screw (39) which is arranged in parallel, two ends of the lower edge of each clamping frame (7) are respectively fixed on the two lead screw sliders (3) through screws, two servo motors (5) are respectively connected on the two lead screws (39), threads with opposite rotation directions are distributed on the two lead screws (39), the two lead screws (39) are synchronously driven to rotate through the two servo motors (5), two clamping frames (7) which are connected with the lead screw sliders (3) on the lead screws are driven to move in opposite directions, when a rectangular block (6) on the clamping frame (7) contacts with a leg part, a patch type force sensor can detect clamping force and output the clamping force to a display, and an operator can adjust the rotation direction and the opening and closing of the two servo motors (5) according to the clamping force, when the servo motor (5) is adjusted to reverse, the two clamping frames (7) move in opposite directions, the clamping force is reduced, and when the motor is switched off, the clamping frames (7) remain stationary.
Example 3:
referring to fig. 3, this embodiment is substantially the same as embodiment 1, and is characterized in that: the foot fixing piece (64) comprises h-shaped connecting pieces (11), screw rods (17), foot connecting pieces (9, 10) and 6 fixing nuts, the foot connecting pieces (9, 10) comprise foot connecting plates (9) and foot fixing rings (10), one ends of the foot fixing rings (10) are connected with one sides of the foot connecting plates (9) through hinges, the other ends of the foot fixing rings (10) are fixed with the other sides of the foot connecting plates (9) through screws, the screw rods (17) are placed in long grooves in the front ends of the connecting plates (1), the screw rods (17) are fixed on two sides of the long grooves through large nuts (13, 14), the two h-shaped connecting pieces (11) are fixed at two ends of the screw rods (17) through small nuts (12, 15, 16 and 18), the h-shaped connecting pieces (11) are connected with the foot connecting plates (9) through screws, and the foot fixing piece can adjust the screw rods (17) in the front ends of the connecting plates (1) to proper positions back and forth, then the foot fixing ring (10) is opened to place the feet of the patient into the foot connecting plate (9), and the other end of the foot fixing ring (10) is connected with the foot connecting plate (9) through a screw, so that the feet are fixed.
Example 4:
referring to fig. 5, the present embodiment is substantially the same as embodiment 1, and is characterized in that: the transverse resetting mechanism (II) comprises a linear guide rail (63), two linear push rods (22, 23), a sliding block (24) and a guide rail base (37), the linear guide rail (63) is connected to the guide rail base (37) through 3 screws, the guide rail base (37) is installed on two parallel guide rails (40, 45) (as shown in figure 11), the sliding block (24) is connected with one connecting plate (1) in the clamping mechanism (I) through 4 screws, the base ends of the two linear push rods (22, 23) are respectively connected with the guide rail base (37) through two screws, the push rod ends of the parallel-installed linear push rods (22, 23) are connected with the sliding block (24) through screws, the transverse resetting mechanism (II) can push the sliding block (24) to slide on the linear guide rail (63) through the two linear push rods (22, 23), and the sliding block (24) drives the clamping mechanism (I) to transversely move, realize the lateral reduction of the affected limb.
Example 5:
referring to fig. 6, the present embodiment is substantially the same as embodiment 1, and is characterized in that: t type coupling mechanism (III) includes two T type connecting pieces (19, 21), connecting piece (20), connecting piece (61) and force sensor (62), a guide rail base (37) in horizontal canceling release mechanical system (II) links to each other with connecting piece (20) through two T type connecting pieces (19, 21), force sensor (62) and connecting piece (61), connecting piece (20) through two screws with draw in canceling release mechanical system (IV) a screw nut (36) and link to each other, T type coupling mechanism (III) are used for connecting horizontal canceling release mechanical system (II) and draw canceling release mechanical system (IV) to can test the restoring force through force sensor (62).
Example 6:
referring to fig. 7, the present embodiment is substantially the same as embodiment 1, and is characterized in that: the traction reduction mechanism (IV) comprises: the lifting mechanism comprises a lead screw (38), a lead screw nut (36), two bearing seats (25, 35), a motor connecting plate (46) and a servo motor (26), wherein the lead screw nut (36) is rotatably matched on the lead screw (38), the lead screw (38) is installed on one lifting frame (27) in the lifting mechanism (V) through the two bearing seats (25, 35), the servo motor (26) is installed on the motor connecting plate (46) through a screw, the servo motor (26) is connected with the lead screw (38), the motor connecting plate (46) is fixed on the side face of one lifting frame (27) in the lifting mechanism (V) through two small-sized supporting frames (47, 48) (shown in figure 9), the lead screw (38) is driven by the motor (26), and the lead screw nut (36) moves back and forth under the driving of the lead screw (38), so that a transverse resetting mechanism (II) is driven by a T-shaped connecting mechanism (III) to move on parallel sliding rails (40, 35, 45) Upward movement to realize traction movement; hoisting mechanism (V) is including lifting frame (27), base (30), connecting plate (33), lead screw slider (34), lead screw (60), lead screw drive part and four the same stand (29), lead screw slider (34) link to each other with lifting frame (27) through 6 screws, 4 the same stand (29) are installed on base (30), 4 drums and 4 stand (29) of lifting frame (27) cooperate, lifting frame (27) can slide from top to bottom along 4 stand (29) under lead screw slider (34) drive, hoisting mechanism (V) can be according to the height of suffering from limb adjustment fixture (I) and can accomplish the vertical direction of fracture and reset.
Example 7:
referring to fig. 8, the present embodiment is substantially the same as embodiment 1, and is characterized in that: the parallel slide rail mechanism comprises parallel slide rails (40, 45) and 4 supports (41, 42, 43 and 44), a guide rail base (37) can slide on the parallel slide rails (40 and 45), the parallel slide rails (40 and 45) are fixed with a lifting frame (27) through the 4 same supports (41, 42, 43 and 44), and two ends of the slide rails (40 and 45) are connected with the supports (41, 42, 43 and 44) through screws.
Example 8:
referring to fig. 10, this embodiment is substantially the same as embodiment 1, and is characterized in that: the screw rod driving part of the lifting mechanism (V) comprises a servo motor (28), gears (51, 58), axial sleeves (50, 59), axial sleeves (52, 57), bearings (53, 56), a shaft (49), bearing end covers (54, 55) and a bottom cover (32), wherein the servo motor (28) penetrates through 6 holes in a connecting plate (33) through 6 screws to be connected with a base (30), the gears (51) and the gears (58) are respectively installed on the shaft (49) and a screw rod (60), the axial sleeves (50, 59) are used for axially positioning the gears (52, 57), one ends of the axial sleeves (50, 59) are in contact with the lower bottom surface of the base (30), the other ends of the axial sleeves (52, 57) are in end surface contact with the gears (52, 57), one ends of the axial sleeves (52, 57) are in end surface contact with the gears (51, 58), the other ends of the axial sleeves are in end surface contact with the inner side of the bottom surface of the, 56) Is arranged in a through hole on the bottom surface of the end cover (32), and the bearing end covers (54, 55) are arranged on the bottom cover (32) through screws and axially position the bearings (53, 56).
When the device is used, firstly, the motor (28) is started, the lifting mechanism is adjusted according to the height of the leg of a patient, and the leg of the clamping mechanism (I) is contacted with the thigh through the leg contact bottom plate (8); secondly, adjusting the position of a screw rod (17) in an elongated slot at the front end of a connecting plate (1), then screwing large nuts (13, 14) to clamp two side faces of the elongated slot, fixing two ends of the screw rod (17) with an h-shaped connecting piece (11) through small nuts (12, 18, 15, 16), placing the foot of a patient into a foot connecting plate (10) after the position of a foot fixing piece is adjusted, connecting a foot fixing ring (9) and the foot connecting plate (10) through screws, starting two motors (5) to synchronously drive two lead screws (39) to drive clamping frames (7) at two sides to move oppositely, measuring clamping force in real time by a patch type force sensor on a rectangular block (6) when the thigh is clamped by the rectangular block (6) on the clamping frame (7), reasonably adjusting the position of the clamping frame (7) according to the size of the clamping force, and avoiding damage to the thigh caused by overlarge clamping; finally, a motor (26) is started, a lead screw nut (36) drives a transverse resetting mechanism (II) to move on parallel sliding rails (40 and 45) along the traction direction through a T-shaped connecting piece (III), a clamping mechanism (I) is fixed on the transverse resetting mechanism (II) through screws, therefore, the clamping mechanism (I) can stretch the far end of the leg fracture along the traction direction to realize the resetting of the leg traction direction, at the moment, a tension sensor (62) in the T-shaped mechanism (III) can measure the traction tension in real time, the measured traction tension is the traction direction resetting force, after the far end of the leg is pulled and stretched, two linear push rods (22 and 23) in the transverse resetting mechanism (II) are started, the two linear push rods (22 and 23) push a sliding block (24) to move along a linear guide rail (63), the sliding block (24) is connected with the clamping mechanism (I) through screws, and therefore, thighs can also move transversely along with the sliding block (24, and then the thigh is transversely reset, after the transverse reset is finished, the motor (28) is started again, and the fracture reset of the leg part in the vertical direction is realized through the up-and-down lifting motion.
Claims (4)
1. The utility model provides a long bone fracture restoring force testing arrangement, it comprises fixture (I), horizontal canceling release mechanical system (II), T type coupling mechanism (III), traction reduction mechanism (IV) and hoisting mechanism (V), its characterized in that: a connecting plate (1) in the clamping mechanism (I) is fixed above a transverse resetting mechanism (II) through a screw, the transverse resetting mechanism (II) is connected with a traction resetting mechanism (IV) through a T-shaped connecting mechanism (III), and the traction resetting mechanism (IV) is installed above a lifting mechanism (V) through a screw; firstly, adjusting a clamping mechanism (I) to a proper height through a lifting mechanism (V), then clamping and fixing a lower limb through the clamping mechanism (I), drawing the lower limb under the action of a drawing and resetting mechanism (IV), testing a resetting force in the drawing direction through a tension sensor on a connecting mechanism (III), then completing the transverse resetting of the fracture through a transverse resetting mechanism (II), and then completing the resetting in the vertical direction of the fracture through the lifting mechanism (V); the T-shaped connecting mechanism (III) comprises two T-shaped connecting pieces (19 and 21), a connecting piece (20), a connecting piece (61) and a tension sensor (62), one guide rail base (37) in the transverse resetting mechanism (II) is connected with the connecting piece (20) through the two T-shaped connecting pieces (19 and 21), the tension sensor (62) and the connecting piece (61), and the connecting piece (20) is connected with one lead screw nut (36) in the traction resetting mechanism (IV) through two screws;
the transverse resetting mechanism (II) comprises a linear guide rail (63), two linear push rods (22, 23), a sliding block (24) and a guide rail base (37), the linear guide rail (63) is fixed on the guide rail base (37) through 3 screws, the sliding block (24) is connected with one connecting plate (1) in the clamping mechanism (I) through 4 screws, the base ends of the two linear push rods (22, 23) are respectively connected with the guide rail base (37) through two screws, and the push rod ends of the parallel linear push rods (22, 23) are connected with the sliding block (24) through screws;
the traction reduction mechanism (IV) comprises: lead screw (38), lead screw nut (36), two bearing frames (25, 35), motor connecting plate (46) and servo motor (26), lead screw nut (36) are joined in marriage soon on lead screw (38), lead screw (38) are installed through two bearing frames (25, 35) the higher authority of a hoisting frame (27) in hoisting mechanism (V), servo motor (26) are installed on motor connecting plate (46) through the screw, and servo motor (26) link to each other with lead screw (38), motor connecting plate (46) through two small-size support frames (47, 48) with the side of a hoisting frame (27) in hoisting mechanism (V) is connected.
2. The long bone fracture restoring force testing device according to claim 1, characterized in that: the clamping structure (I) comprises clamping fixing parts (6, 7) at two sides of a thigh, a leg contact bottom plate (8), a connecting plate (1), a servo motor (5), a screw rod (39) and a foot fixing part (64); the thigh two-side clamping fixing pieces (6 and 7) are synchronously driven by a lead screw (39) controlled by two small servo motors (5), the clamping fixing pieces (6 and 7) comprise two clamping frames (7) and four same rectangular blocks (6), each rectangular block (6) is connected with the clamping frame (7) through 2 screws, and patch type force sensors are attached to the rectangular blocks (6); two lead screws (39) rotate through 4L-shaped connecting plates (2) below the connecting plate (1), each lead screw (39) which is installed in parallel is provided with two lead screw sliding blocks (3) in a rotating mode, two ends of the lower edge of each clamping frame (7) are fixed on the two lead screw sliding blocks (3) through screws respectively, and two servo motors (5) are connected to the two lead screws (39) respectively.
3. The long bone fracture restoring force testing device according to claim 2, characterized in that: the foot fixing piece (64) comprises h-shaped connecting pieces (11), screw rods (17), foot connecting pieces (9, 10) and 6 fixing nuts, the foot connecting pieces (9, 10) comprise foot connecting plates (9) and foot fixing rings (10), the screw rods (17) are placed in long grooves in the front ends of the connecting plates (1), the screw rods (17) are fixed on two sides of the long grooves through large nuts (13, 14), the two h-shaped connecting pieces (11) are fixed at two ends of the screw rods (17) through small nuts (12, 15, 16, 18), and the h-shaped connecting pieces (11) are connected with the foot connecting plates (9, 10) through screws.
4. The long bone fracture reduction force testing device according to claim 1, wherein: the lifting mechanism (V) comprises a lifting frame (27), a base (30), a connecting plate (33), a lead screw sliding block (34), a lead screw (60), a lead screw driving part and 4 identical upright posts (29), wherein the lead screw sliding block (34) is connected with the lifting frame (27) through 6 screws, the lead screw (60) is screwed with one lead screw sliding block (34), the 4 identical upright posts (29) are symmetrically arranged on the base (30), the lead screw driving part comprises a servo motor (28), gears (51, 58), axial sleeves (50, 59), axial sleeves (52, 57), bearings (53, 56), a shaft (49), bearing end covers (54, 55) and a bottom cover (32), the servo motor (28) penetrates through 6 holes in the connecting plate (33) through the 6 screws to be connected with the base (30), and the gears (51) and the gears (58) are respectively arranged on the shaft (49) and the lead screw (60), and the gear (51) and the gear (58) are meshed with each other, the gear (51) is axially positioned through the axial sleeve (50) and the axial sleeve (52), the gear (58) is axially positioned through the axial sleeve (59) and the axial sleeve (57), and the end cover (32) is installed on the bottom surface of the base (30) through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810062235.1A CN108095811B (en) | 2018-01-23 | 2018-01-23 | Long bone fracture restoring force testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810062235.1A CN108095811B (en) | 2018-01-23 | 2018-01-23 | Long bone fracture restoring force testing arrangement |
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| CN108095811B true CN108095811B (en) | 2020-10-16 |
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| US10874469B2 (en) * | 2017-05-22 | 2020-12-29 | Tsinghua University | Remotely operated orthopedic surgical robot system for fracture reduction with visual-servo control method |
| CN110680484B (en) * | 2019-10-28 | 2023-03-17 | 上海大学 | Clamping mechanism for robot-assisted lower limb fracture reduction operation |
| CN112043384B (en) * | 2020-07-29 | 2023-07-18 | 上海大学 | External force prediction system of fracture reduction robot |
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| CN105726127A (en) * | 2016-01-28 | 2016-07-06 | 东南大学 | Automatic traction and rotating reset device for leg fracture |
| CN208741225U (en) * | 2017-11-30 | 2019-04-16 | 浙江中医药大学 | A kind of portable fractured leg traction restorer |
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| CN2039962U (en) * | 1988-09-27 | 1989-06-28 | 上海市伤骨科研究所 | Electric fracture reposition tractor |
| FR2681236A1 (en) * | 1991-09-13 | 1993-03-19 | Lacaffiniere Jean Yves De | Independent surgical traction device for centromedullary osteosynthesis of the tibia |
| JPH07132335A (en) * | 1993-11-10 | 1995-05-23 | Satsuki Seisakusho:Kk | Device for continuously delivering long body |
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