Electric lock needle pressurizer and pelvis fixing device

Abstract

The utility model relates to an electric lock pin pressurizer which comprises a gear set shell, a driven gear and a driving gear which are meshed with each other are arranged in the gear set shell, the driving gear is detachably connected with an output shaft of a driving motor, and an inner threaded sleeve is fixedly arranged in the middle of the driven gear; a through hole is formed in the middle of the propelling screw rod along the axis, and the propelling screw rod is in threaded connection with the interior of the internal thread sleeve; the second lock head is fixedly arranged at the front end of the propelling screw rod and is used for locking the bone needle; the locking nut is located between the gear set shell and the second lock head and connected to the propelling screw in a threaded mode. The operation burden of a doctor is reduced, and the precision and success rate of an operation are improved; and the driving motor adopts quick-release connection, so that the use is convenient and flexible. The utility model further relates to a pelvis fixing device. The pelvis fixing device comprises a pelvis fixator, an electric lock needle pressurizer and a ball head lock needle adjuster, wherein the electric lock needle pressurizer and the ball head lock needle adjuster are arranged on the pelvis fixator. The operation is simple and convenient, the operation time is shortened, and the operation safety and reliability are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the orthopedics operation technical field, concretely relates to a kind of electric lock needle pressurizer and pelvic fixation device. BACKGROUND

[0002] Pelvis is an important part of human skeleton, and important organs and important blood vessels and nerves that dominate lower limbs are in pelvis. Traffic accidents and other personal injury accidents occur frequently in daily life, and the number of patients with pelvic and acetabular fracture multiple injuries and complex injuries is increasing year by year. Human pelvic fracture is a serious injury. Pelvic fracture often combines pelvic organ, blood vessel, nerve and other injuries. If not treated in time, it will pose a serious risk to the patient's life. The traditional treatment method is to cut open the fracture site. Although this method can directly observe the injury area, it requires a large incision and extensive soft tissue dissection for pelvic surgical approach, which may cause damage to important blood vessels and nerves and increase the risk of incision infection. It also produces a large amount of bleeding during treatment, which may seriously endanger the patient's life and health. Closed reduction of pelvic fracture has the advantages of small incision, reduced risk of infection, reduced damage to blood vessels and nerves in the surgical area, and faster recovery.

[0003] The current lock needle pressurizer is manually adjusted to the position of the bone needle, and the doctor's operation burden is high. Errors may occur during the adjustment process, and the operation precision is low. In addition, the lock needle adjuster also plays an important role. After the bone needle is adjusted to the appropriate position, the lock needle adjuster can fix the bone needle to prevent displacement during subsequent operations, ensuring the stability and safety of the fracture site during the entire treatment process. To this end, the utility model provides an electric lock needle pressurizer, which can electrically adjust the bone needle to pull and drag forward and backward, unlock and reset the bone, reduce the doctor's operation burden, and improve the operation precision and success rate. The drive motor is connected in a quick-release manner, which is convenient and flexible to use. In addition, the utility model also relates to a pelvic fixation device, which is easy to operate and shortens the operation time. The electric lock needle pressurizer is combined with the ball head lock needle adjuster to pull and fix the position in multiple directions, improving the safety and reliability of the operation. SUMMARY

[0004] The utility model solves the technical problem of providing an electric lock needle pressurizer, which can electrically adjust the bone needle to pull and drag forward and backward, unlock and reset the bone, reduce the doctor's operation burden, and improve the operation precision and success rate. The drive motor is connected in a quick-release manner, which is convenient and flexible to use. The utility model also provides a pelvic fixation device, which is easy to operate and shortens the operation time. The electric lock needle pressurizer is combined with the ball head lock needle adjuster to pull and fix the position in multiple directions, improving the safety and reliability of the operation.

[0005] To solve the above problems, the utility model adopts the technical scheme that:

[0006] An electric lock needle pressurizer, comprising:

[0007] A gear set shell is internally provided with a driven gear and a driving gear that are mutually meshed, the driving gear is detachably connected with the output shaft of a driving motor, and an internally threaded sleeve is fixedly arranged in the middle of the driven gear;

[0008] A push screw rod is arranged with a through hole in the middle along the axis and is screwed into the internally threaded sleeve;

[0009] A second lock head is fixedly arranged at the front end of the push screw rod, the second lock head is internally provided with a fourth through hole corresponding to the through hole, a fourth screw hole is arranged on the side wall of the second lock head and is in communication with the fourth through hole, and a second jacking bolt is screwed into the fourth screw hole;

[0010] A locking nut is arranged between the gear set shell and the second lock head and is screwed onto the push screw rod;

[0011] A support is fixedly arranged at the bottom of the gear set shell, and a support rod is fixedly arranged on the support.

[0012] As an embodiment of the utility model, a shroud is arranged at the rear end of the push screw rod, the shroud is fixedly arranged with the gear set shell, a third through hole corresponding to the bone needle is arranged at the rear end of the shroud, a motor shell is arranged outside the driving motor, and the shroud and the motor shell are connected together through a movable clamp.

[0013] As an embodiment of the utility model, an externally threaded sleeve is fixedly arranged on one side of the gear set shell, the shroud and the motor shell are in a cylindrical shape, and an internally threaded hole that is matched with the externally threaded sleeve is arranged at the front end of the shroud.

[0014] As an embodiment of the utility model, a cylindrical driving block is fixedly arranged in the middle of the rear end of the driving gear, a hexagonal driving hole is arranged at the outer end of the driving block, and a hexagonal motor conversion head that is matched with the driving hole is fixedly arranged at the end of the output shaft of the driving motor.

[0015] As an embodiment of the utility model, the movable clamp includes the first jaw and the second jaw which are symmetrically arranged, fifth arc-shaped grooves and seventh arc-shaped grooves are respectively arranged on the lower parts of the first jaw and the second jaw, sixth arc-shaped grooves and eighth arc-shaped grooves are respectively arranged on the upper parts of the first jaw and the second jaw, a first countersunk hole in a circular shape is arranged on the middle part of the outer wall of the first jaw, a second countersunk hole in a hexagonal shape is arranged on the middle part of the side wall of the second jaw, and the utility model further includes a connecting bolt in a hexagonal prism shape, the connecting bolt is sequentially threaded through the second countersunk hole and the first countersunk hole and is screwed together with the knob, and a threaded hole matched with the connecting bolt is formed in the knob.

[0016] As an embodiment of the utility model, the gear set shell includes a front shell and a rear shell which are buckled together, first mounting holes and second mounting holes corresponding to the internal thread sleeve are respectively arranged on the upper parts of the front shell and the rear shell, a support column corresponding to the driven gear shaft hole is arranged on the lower part of the front shell, and a third mounting hole corresponding to the driving block is arranged on the lower part of the rear shell.

[0017] First gear sleeves and second gear sleeves are respectively sleeved on the outer parts of the front end and the rear end of the internal thread sleeve, a third gear sleeve is sleeved on the outer part of the driving block, a fourth gear sleeve is inserted in the middle part of the front end of the driving gear, and the inner diameter of the fourth gear sleeve is matched with the outer diameter of the support column.

[0018] As an embodiment of the utility model, the inner diameter of the shield is in a cylindrical shape, a cylindrical support block matched with the inner diameter of the shield is fixedly arranged on the rear end of the propelling screw, or a cuboid guide groove is arranged on the inner part of the shield along the axial direction, and a cuboid guide block matched with the guide groove is fixedly arranged on the rear end of the propelling screw.

[0019] A pelvis fixing device based on the electric lock pin pressurizer comprises a pelvis fixer, an electric lock pin pressurizer and a ball head lock pin adjuster arranged on the pelvis fixer, the ball head lock pin adjuster comprises a clamping piece, an adjusting block connected with the clamping piece and a first lock head connected with the adjusting block through a ball head rod, the ball head rod comprises a ball head clamped in the adjusting block and a connecting rod fixedly arranged on the ball head, and the connecting rod is fixedly connected with the first lock head; a through lock hole is arranged on the first lock head, a first screw hole communicating with the lock hole is arranged on the first lock head, a first jacking bolt is arranged in the first screw hole, and a handle is arranged on the outer end of the first jacking bolt.

[0020] As an embodiment of the utility model, the adjusting block is in a cylindrical shape, a through third screw hole is formed in the middle part of the adjusting block along the axial direction, a stop ring with an inner diameter smaller than the diameter of the ball head is arranged at the top edge of the third screw hole, a first threaded column is screwed in the third screw hole, a spherical groove matched with the contour of the ball head is arranged on the upper end surface of the first threaded column, and the lower end of the first threaded column is connected with the clamping piece.

[0021] The clamping piece comprises an upper clamping block and a lower clamping block, first and second through holes are respectively arranged in the upper clamping block and the lower clamping block, a second threaded column is coaxially arranged at the lower end of the first threaded column, and a nut is screwed at the lower end of the second threaded column after the lower end of the second threaded column is passed through the first and second through holes; and the bottom surface of the upper clamping block and the top surface of the lower clamping block are provided with corresponding arc-shaped grooves.

[0022] As an embodiment of the utility model, the pelvis fixer comprises two support frames and a plurality of fixing rods arranged between the two support frames through fixing joints, the support frame is composed of an outer ring support frame, an inner ring support frame and a connecting rod connected between the outer ring support frame and the inner ring support frame, the support rod of the electric locking needle presser is fixedly arranged on the fixing rod through the fixing joint, and the ball head locking needle adjuster is fixedly arranged on the fixing rod through the clamping piece.

[0023] The beneficial effects produced by the above technical scheme are as follows:

[0024] The electric locking needle presser can drive the propelling screw to move forward and backward, thereby driving the bone needle locked on the second lock head to move forward and backward for traction, can electrically adjust the position of the bone needle, realizes the unlocking and resetting of the bone, reduces the operation burden of the doctor and improves the precision and success rate of the operation; wherein the driving motor adopts quick release type connection, the motor shell and the shield are connected together through the movable clamp, after the bone needle is fixed, the driving motor and the motor conversion head can be removed, and the use is convenient and flexible.

[0025] The utility model discloses a kind of pelvis fixing devices, which is composed of pelvis fixer, electric locking needle presser and ball head locking needle adjuster, and it is easy to operate, shorten the operation time, electric locking needle presser and ball head locking needle adjuster can be combined to traction and position fixing in multiple directions, improve the safety and reliability of operation. The ball head locking needle adjuster is composed of first jacking bolt, first lock head, adjusting block, ball head rod, threaded column and clamping piece, and it is simple and light in structure, easy to produce and assemble, the ball head locking needle adjuster is fixed on the pelvis fixer by clamping piece, and the bone needle can be locked by rotating handle, which is easy to operate. Ball head can rotate and incline freely within a certain range, and the bone needle can be adjusted direction flexibly in three-dimensional space by rotating adjusting block to lock ball head, and it is especially suitable for fracture of complex structure such as pelvis. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the structure schematic view of electric locking needle presser in the utility model.

[0027] Figure 2 It is another angle structure schematic view of electric locking needle presser in the utility model.

[0028] Figure 3 Is the structure schematic diagram of the electric lock needle pressurizer after the motor shell and the shield are removed in the utility model.

[0029] Figure 4 Is the structure schematic diagram of the electric lock needle pressurizer in the advancing screw rod, gear set shell, locking nut and support.

[0030] Figure 5 Is the structure schematic diagram of the electric lock needle pressurizer in the gear set shell, second lock head and support.

[0031] Figure 6 Is the structure schematic diagram of the electric lock needle pressurizer in the advancing screw rod, gear set shell and locking nut.

[0032] Figure 7 Is the structure schematic diagram in the advancing screw rod and gear set shell in the electric lock needle pressurizer.

[0033] Figure 8 Is another angle structure schematic diagram in the advancing screw rod and gear set shell in the electric lock needle pressurizer.

[0034] Figure 9 Is the structure schematic diagram in the gear set shell in the electric lock needle pressurizer.

[0035] Figure 10 Is another angle structure schematic diagram in the gear set shell in the electric lock needle pressurizer.

[0036] Figure 11 Is the structure schematic diagram of the movable clamp jaw in the electric lock needle pressurizer.

[0037] Figure 12 Is another angle structure schematic diagram of the movable clamp jaw in the electric lock needle pressurizer.

[0038] Figure 13 Is the structure schematic diagram of the connecting bolt and knob in the electric lock needle pressurizer.

[0039] Figure 14 Is the structure schematic diagram of the front shell in the electric lock needle pressurizer.

[0040] Figure 15 Is another angle structure schematic diagram of the front shell in the electric lock needle pressurizer.

[0041] Figure 16 Is the structure schematic diagram of the rear shell in the electric lock needle pressurizer.

[0042] Figure 17 is the structure diagram of the shroud in the electric lock needle pressurizer.

[0043] Figure 18 is another structure diagram in the electric lock needle pressurizer.

[0044] Figure 19 is another structure diagram of the shroud in the electric lock needle pressurizer.

[0045] Figure 20 is the structure diagram of the pelvis fixing device.

[0046] Figure 21 is the structure diagram of the ball head lock needle adjuster.

[0047] Figure 22 is the main view structure diagram of the ball head lock needle adjuster.

[0048] Figure 23 is the exploded structure diagram of the ball head lock needle adjuster.

[0049] Figure 24 is the structure diagram of the adjusting block in the ball head lock needle adjuster.

[0050] Figure 25 is another angle structure diagram of the adjusting block in the ball head lock needle adjuster.

[0051] Figure 26 is the structure diagram of the ball head rod in the ball head lock needle adjuster.

[0052] Figure 27 is the structure diagram of the threaded column in the ball head lock needle adjuster.

[0053] Figure 28 is another angle structure diagram of the threaded column in the ball head lock needle adjuster.

[0054] Figure 29 is the structure diagram of the clamping piece in the ball head lock needle adjuster.

[0055] Figure 30 is another angle structure diagram of the clamping piece in the ball head lock needle adjuster.

[0056] Figure 31 is the structure diagram of the upper clamping block in the ball head lock needle adjuster.

[0057] Figure 32 is the structure diagram of the lower clamping block in the ball head lock needle adjuster.

[0058] Figure 33 Figure 1 is a schematic view of the structure of the conical washer in the ball head lock pin adjuster of the present application.

[0059] Figure 34 Figure 4 is a schematic view of the structure of the driving motor and motor conversion head in the electric lock pin presser of the present application.

[0060] Figure 35 Figure 5 is an exploded schematic view of the driving motor and motor conversion head in the electric lock pin presser of the present application.

[0061] 1 handle, 2 first tightening bolt, 3 first lock head, 4 first screw hole, 401 second screw hole, 5 lock hole, 6 adjusting block, 7 third screw hole, 8 stop ring, 9 cutting plane, 10 ball head, 11 connecting rod, 12 first threaded column, 13 groove, 14 clamping block, 15 second threaded column, 16 upper clamping block, 17 clamping groove, 18 first via hole, 19 first arc-shaped groove, 20 second arc-shaped groove, 21 insertion block, 22 lower clamping block, 23 second via hole, 24 third arc-shaped groove, 25 fourth arc-shaped groove, 26 insertion slot, 27 conical hole, 28 nut, 29 conical washer, 30 bone needle, 31 fixed rod;

[0062] 32 motor housing, 33 shroud, 3301 third via hole, 3302 guide groove, 34 movable clamp, 3401 first clamping jaw, 3402 first countersunk hole, 3403 knob, 3404 fifth arc-shaped groove, 3405 sixth arc-shaped groove, 3406 second clamping jaw, 3407 second countersunk hole, 3408 seventh arc-shaped groove, 3409 eighth arc-shaped groove, 3410 connecting bolt, 35 driving motor, 3501 output shaft, 36 wire, 37 advancing screw, 3701 support block, 3702 through hole, 3703 guide block, 38 internally threaded sleeve, 39 driven gear, 40 driving gear, 4001 driving block, 4002 driving hole, 41 motor conversion head, 4101 fifth screw hole, 42 insertion hole, 43 first gear sleeve, 44 second gear sleeve, 45 third gear sleeve, 46 fourth gear sleeve, 47 gear set housing, 4701 front shell, 4702 first mounting hole, 4703 protruding ring, 4704 support column, 4705 rear shell, 4706 second mounting hole, 4707 third mounting hole, 48 externally threaded sleeve, 49 locking nut, 50 second lock head, 5001 fourth screw hole, 51 fourth via hole, 52 second tightening bolt, 53 support, 54 support rod, 55 outer ring support, 56 inner ring support, 57 fixed joint, 58 manual presser, 59 adapter. DETAILED DESCRIPTION

[0063] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be described clearly and completely below in connection with specific embodiments.

[0064] As Figures 1-6 The utility model provides an electric lock needle pressurizer which comprises:

[0065] A gear set housing 47 is internally provided with a driven gear 39 and a driving gear 40 which are in mesh with each other, the driving gear 40 is detachably connected with the output shaft of a driving motor 35, and an internally threaded sleeve 38 is fixedly arranged in the middle of the driven gear 39;

[0066] A push screw 37 is arranged in the internally threaded sleeve 38 in a threaded manner, and a through hole 3702 is arranged in the middle of the push screw 37 along an axis;

[0067] A second lock head 50 is fixedly arranged at the front end of the push screw 37, a fourth through hole 51 corresponding to the through hole 3702 is arranged in the second lock head 50, a fourth screw hole 5001 is arranged in the side wall of the second lock head 50 and communicates with the fourth through hole 51, a second jacking bolt 52 is screwed in the fourth screw hole 5001, and a handle 1 is arranged on the second jacking bolt 52;

[0068] A locking nut 49 is arranged between the gear set housing 47 and the second lock head 50 and is screwed on the push screw 37; after the driving motor 35 completes the pressurization of the bone needle 30, the locking nut 49 is screwed on the gear set housing 47, so that the loosening of the push screw 37 can be prevented.

[0069] A support 53 is fixedly arranged at the bottom of the gear set housing 47, and a support rod 54 is fixedly arranged on the support 53; the support 53 is in a U shape and is composed of two vertical parts and an arc-shaped part, is detachably arranged at the bottom of the gear set housing 47 through bolts, and the support rod 54 is vertically arranged at the bottom of the support 53 and is arranged along the radial direction of the radius of the arc-shaped part.

[0070] The electric lock needle pressurizer provided by the utility model is characterized in that the bone needle 30 is arranged in the through hole 3702 and the fourth through hole 51 of the push screw 37 and can be locked through the second jacking bolt 52; the driving motor 35 and the gear assembly in the gear set housing 47 can drive the push screw 37 to move forward and backward, so that the bone needle 30 locked on the second lock head 50 is driven to move forward and backward and controlled traction is realized, the position of the bone needle 30 can be electrically adjusted, the unlocking and resetting of the bone are realized, the operation burden of doctors is reduced, and the precision and success rate of surgery are improved; the driving motor 35 is connected in a quick-release mode, the motor housing 32 and the shield 33 are connected together through the movable clamp 34, after the bone needle 30 is fixed, the driving motor 35 and the motor conversion head 41 can be detached, the utility model is convenient and flexible to use, and the driving motors 35 of different pressurizers can be used in combination.

[0071] In this embodiment, the propeller screw 37 rear end is externally provided with a shield 33, and the shield 33 is fixed with the gear set housing 47, the shield 33 rear end is provided with a third through hole 3301 corresponding to the bone needle 30; the driving motor 35 is a planetary reduction motor, and the external motor housing 32 is provided with the driving motor 35, the wire 36 is connected with the driving motor 35 through the motor housing 32, and the shield 33 and the motor housing 32 are connected together through the movable clamp 34.

[0072] As shown in the figure, Figure 3 The gear set housing 47 is fixed with an external thread sleeve 48 on one side of the shield 33, the shield 33 and the motor housing 32 are cylindrical, and the shield 33 front end is provided with an internal thread matched with the external thread sleeve 48. The external thread sleeve 48 is connected to the gear set housing 47 through the flange.

[0073] As shown in the figure, Figure 10 , Figure 34 and Figure 35 The driving block 4001 is fixed at the rear end of the driving gear 40, and the driving hole 4002 is provided at the outer end of the driving block 4001, the output shaft 3501 of the driving motor 35 is fixed with the motor conversion head 41 matched with the driving hole 4002, so that the output shaft 3501 of the driving motor 35 can drive the driving block 4001 to rotate, and the motor conversion head 41 is convenient to separate. Specifically, the one end of the motor conversion head 41 is provided with the insertion hole 42, the end of the output shaft 3501 of the driving motor 35 and the insertion hole 42 are both large arc shape composed of major arc and chord, the fifth screw hole 4101 is provided on the side of the motor conversion head 41, and the motor conversion head 41 is fastened on the output shaft 3501 through the screw.

[0074] As shown in the figure, Figures 11-13 The movable clamp 34 includes the first clamping jaw 3401 and the second clamping jaw 3406 arranged symmetrically, the fifth arc-shaped groove 3404 and the seventh arc-shaped groove 3408 are arranged on the lower part of the first clamping jaw 3401 and the second clamping jaw 3406 respectively, the sixth arc-shaped groove 3405 and the eighth arc-shaped groove 3409 are arranged on the upper part of the first clamping jaw 3401 and the second clamping jaw 3406 respectively; the first countersunk hole 3402 is arranged on the middle part of the outer wall of the first clamping jaw 3401, the second countersunk hole 3407 is arranged on the middle part of the side wall of the second clamping jaw 3406, and the connecting bolt 3410 with hexagonal prism tail end is further included, the connecting bolt 3410 passes through the second countersunk hole 3407 and the first countersunk hole 3402 in turn and is screwed together with the knob 3403, and the screw hole matched with the connecting bolt 3410 is arranged on the knob 3403.

[0075] As shown in the figure, Figures 14-16As shown, the gear set housing 47 comprises a front shell 4701 and a rear shell 4705 that are buckled together and bolted together, the front shell 4701 and the rear shell 4705 are respectively provided with a first mounting hole 4702 and a second mounting hole 4706 corresponding to the internally threaded sleeve 38, the lower part of the front shell 4701 is provided with a support column 4704 corresponding to the middle shaft hole of the driven gear 39, and the lower part of the rear shell 4705 is provided with a third mounting hole 4707 corresponding to the driving block 4001;

[0076] The first gear sleeve 43 and the second gear sleeve 44 are respectively sleeved on the front end and the rear end of the internally threaded sleeve 38, the third gear sleeve 45 is sleeved on the outside of the driving block 4001, the first gear sleeve 43 is matched with the first mounting hole 4702, the second gear sleeve 44 is matched with the second mounting hole 4706, the third gear sleeve 45 is matched with the third mounting hole 4707, and the fourth gear sleeve 46 is inserted into the front end middle shaft hole of the driving gear 40, and the inner diameter of the fourth gear sleeve 46 is matched with the outer diameter of the support column 4704;

[0077] The first mounting hole 4702 is provided with a protruding ring 4703 outside, and the operation space is increased by arranging the protruding ring 4703, so that the operator can conveniently rotate by hand when locking the advancing screw 37 by the lock nut 49.

[0078] As shown in Figure 3 and Figure 17 The inner diameter of the shroud 33 is cylindrical, the rear end of the advancing screw 37 is fixedly provided with a cylindrical support block 3701 matched with the inner diameter of the shroud 33, the support block 3701 cooperates with the inner wall of the shroud 33 to prevent the advancing screw from shaking in the shroud 33, and since the bone needle 30 is fixed on the bone and the advancing screw 37 is fixed with the bone needle 30, the advancing screw 37 will not rotate when the internally threaded sleeve 38 drives the advancing screw 37 to move forward and backward. As a further optimization, as shown in Figure 18 and Figure 19 In order to prevent the advancing screw 37 from rotating, a cuboid guide groove 3302 is arranged in the shroud 33 along the axial direction, the rear end of the advancing screw 37 is fixedly provided with a cuboid guide block 3703 matched with the guide groove 3302, and the guide block 3703 can slide along the length direction of the guide groove 3302. In addition, corresponding rounded corners are arranged at the side wall corners of the guide block 3703 and the guide groove 3302. The middle parts of the support block 3701 and the guide block 3703 are respectively provided with through holes 3702 corresponding to the through hole 3702.

[0079] As shown in Figure 20The illustrated one is based on the above-mentioned electric lock needle pressurizer pelvic fixation device, which comprises a pelvic fixation device and an electric lock needle pressurizer and a ball head lock needle adjuster arranged on the pelvic fixation device; the pelvic fixation device comprises two support frames and a plurality of fixing rods 31 arranged between the two support frames through a fixing joint 57, the support frame is composed of an outer ring support 55 and an inner ring support 56 and a connecting rod connected between the outer ring support 55 and the inner ring support 56, the support rod 54 of the electric lock needle pressurizer is fixedly arranged on the fixing rod 31 through the fixing joint 57, and the ball head lock needle adjuster is fixedly arranged on the fixing rod 31 through the clamping piece. The bottom of the support frame is provided with a matching device 59, which can fix the support frame on the hospital bed. The pelvic fixation device is easy to operate, which shortens the operation time, and the combination of the electric lock needle pressurizer and the ball head lock needle adjuster can be used for traction and position fixing in multiple directions, which improves the safety and reliability of the operation. The specific structure of the pelvic fixation device can refer to the existing patent with the authorized announcement number CN212592368U applied by the applicant before, which has described the pelvic fixation device, the fixing joint 57 and the matching device 59 in detail, and the manual pressurizer 58 is used for pressurizing the bone needle 30 at that time.

[0080] As shown in Figures 21-23 The ball head lock needle adjuster comprises a clamping piece, an adjusting block 6 connected with the clamping piece and a first lock head 3 connected with the adjusting block 6 through a ball head rod, the ball head rod comprises a ball head 10 clamped in the adjusting block 6 and a connecting rod 11 fixedly arranged on the ball head 10, and the connecting rod 11 is fixedly connected with the first lock head 3; the first lock head 3 is provided with a through lock hole 5, the first lock head 3 is provided with a first screw hole 4 in communication with the lock hole 5, the first screw hole 4 is provided with a first tightening bolt 2, and the first tightening bolt 2 is provided with a handle 1 at the outer end, after the bone needle 30 is inserted into the lock hole 5, the bone needle 30 can be locked by rotating the handle 1.

[0081] The ball head lock needle adjuster is composed of the first tightening bolt 2, the first lock head 3, the adjusting block 6, the ball head rod, the threaded column (the first threaded column 12 and the second threaded column 15) and the clamping piece, which has simple and light structure, is convenient for production and assembly, the ball head lock needle adjuster is fixed on the pelvic fixation device through the clamping piece, the bone needle 30 can be locked by rotating the handle 1, and the operation is simple. The ball head 10 can rotate and tilt freely within a certain range, and the ball head 10 is locked by rotating the adjusting block 6, so that the bone needle 30 can be flexibly adjusted in the three-dimensional space, and it is especially suitable for fractures of complex structures such as pelvis.

[0082] As shown in Figures 24-28 In this embodiment, the adjusting block 6 is cylindrical, a through third screw hole 7 is formed in the middle part along the axial direction, and a stop ring 8 with an inner diameter smaller than the diameter of the ball head 10 is arranged at the top edge of the third screw hole 7;

[0083] The third screw hole 7 is screwed with a first threaded post 12. The upper end face of the first threaded post 12 is provided with a spherical groove 13 that matches the contour of the ball head 10. The lower end of the first threaded post 12 is connected to the clamping member.

[0084] like Figures 29-32 As shown, the clamping member includes an upper clamping block 16 and a lower clamping block 22. The upper clamping block 16 and the lower clamping block 22 are respectively provided with corresponding first through holes 18 and second through holes 23. The lower end of the first threaded post 12 is coaxially fixed with a second threaded post 15. The lower end of the second threaded post 15 passes through the first through hole 18 and the second through hole 23 and is screwed with a nut 28. The bottom surface of the upper clamping block 16 and the top surface of the lower clamping block 22 are provided with corresponding arc-shaped grooves.

[0085] As a further optimization, such as Figure 30 and Figure 32 As shown, the bottom surface of the upper clamping block 16 is fixed with an insert 21, and the top surface of the lower clamping block 22 is provided with a slot 26 corresponding to the insert 21. By providing the insert 21 and the slot 26, relative rotation between the upper clamping block 16 and the lower clamping block 22 can be prevented.

[0086] like Figure 28 and Figure 31 As shown, a locking block 14 is provided between the first threaded post 12 and the second threaded post 15, and a locking groove 17 corresponding to the locking block 14 is provided on the top of the upper clamping block 16. By providing the locking block 14 and the locking groove 17, relative rotation between the threaded post and the upper clamping block 16 can be prevented. In this embodiment, both the locking block 14 and the locking groove 17 are large arc shapes composed of a large arc and a chord.

[0087] like Figure 22 As shown, the upper clamping block 16 has a first arc-shaped groove 19 and a second arc-shaped groove 20 with different diameters at its bottom edge, and the lower clamping block 22 has a third arc-shaped groove 24 corresponding to the first arc-shaped groove 19 and a fourth arc-shaped groove 25 corresponding to the second arc-shaped groove 20 at its top edge. By providing two sets of arc-shaped grooves of different sizes, the clamping component can be fixed to the fixing rods 31 of different thicknesses in the pelvic fixator.

[0088] like Figure 30 and Figure 33 As shown, the bottom of the second through hole 23 is a tapered hole 27 with a smaller inner diameter and a larger outer diameter, and a tapered gasket 29 is provided inside the tapered hole 27. By providing the tapered gasket 29, the clamping component can be secured more firmly.

[0089] The first lock head 3 is horizontally arranged in a cylindrical shape, the lock hole 5 is arranged along the axis of the first lock head 3, the first screw hole 4 is arranged at the top along the radial direction of the first lock head 3, the second screw hole 401 is arranged at the bottom of the first lock head 3 along the radial direction of the first lock head 3, the connecting rod 11 is arranged along the radial direction of the ball head 10, the outer part of the connecting rod 11 is provided with external threads, and the connecting rod 11 is screwed into the second screw hole 401. The first screw hole 4 and the second screw hole 401 are coaxially arranged. The second screw hole 401 can be in communication with the lock hole 5 or not, or the second screw hole 401 is not provided with threads, and the connecting rod 11 can be directly fixed by welding after being inserted.

[0090] The adjusting block 6 is vertically arranged in a cylindrical shape, and the side surface is symmetrically provided with a cutting plane 9, so as to facilitate the rotation of the adjusting block 6 and the locking of the position of the ball head 10. The clamping piece is in a whole cylindrical shape, and the upper clamping block 16 and the lower clamping block 22 are both in a cylindrical shape.

[0091] Although the utility model has been described in detail with reference to the foregoing embodiments, the skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. An electrically powered lock pin pressurizer characterized by, It includes: Gear set housing (47), which is provided with a driven gear (39) and a driving gear (40) inside, the driving gear (40) is detachably connected with the output shaft of the driving motor (35), the driven gear (39) is provided with a threaded sleeve (38) in the middle; The advancing screw (37) is provided with a through hole (3702) in the middle along the axis, which is screwed in the threaded sleeve (38); The second lock head (50) is fixed on the front end of the advancing screw (37), the second lock head (50) is provided with a fourth through hole (51) corresponding to the through hole (3702) inside, the second lock head (50) is provided with a fourth screw hole (5001) on the side wall, which is communicated with the fourth through hole (51), the fourth screw hole (5001) is screwed with the second tightening bolt (52); Locking nut (49), which is located between the gear set housing (47) and the second lock head (50), is screwed on the advancing screw (37); Support (53), which is fixed on the bottom of the gear set housing (47), is provided with a support rod (54).

2. An electrically powered lock needle pressurizer according to claim 1, characterized in that: The rear end of the advancing screw (37) is provided with a shroud (33), and the shroud (33) is fixed with the gear set housing (47), the rear end of the shroud (33) is provided with a third through hole (3301) corresponding to the bone needle (30); the driving motor (35) is provided with a motor housing (32) outside, the shroud (33) and the motor housing (32) are connected together through the movable clamp (34).

3. An electrically powered lock needle pressurizer according to claim 2, characterized in that: The gear set housing (47) is provided with an external threaded sleeve (48) on one side of the shroud (33), the shroud (33) and the motor housing (32) are cylindrical, the shroud (33) is provided with an internal thread at the front end, which is matched with the external threaded sleeve (48).

4. An electrically powered lock needle pressurizer according to claim 3, characterized in that: The rear end of the driving gear (40) is provided with a cylindrical driving block (4001) in the middle, and the outer end of the driving block (4001) is provided with a hexagonal driving hole (4002), the output shaft (3501) of the driving motor (35) is provided with a hexagonal motor conversion head (41) at the end, which is matched with the driving hole (4002).

5. An electrically powered lock needle pressurizer according to claim 4, characterized in that: The movable clamp (34) comprises symmetrically arranged first and second clamping jaws (3401 and 3406), fifth and seventh arc-shaped grooves (3404 and 3408) are arranged on lower parts of the first and second clamping jaws (3401 and 3406) respectively, and sixth and eighth arc-shaped grooves (3405 and 3409) are arranged on upper parts of the first and second clamping jaws (3401 and 3406) respectively; a first countersunk hole (3402) in a circular shape is arranged in a middle part of an outer wall of the first clamping jaw (3401), a second countersunk hole (3407) in a hexagonal shape is arranged in a middle part of a side wall of the second clamping jaw (3406), and a connecting bolt (3410) in a hexagonal prism shape is further arranged, the connecting bolt (3410) passes through the second countersunk hole (3407) and the first countersunk hole (3402) in sequence and is screwed together with a knob (3403), and a threaded hole matched with the connecting bolt (3410) is formed in the knob (3403).

6. The electrically powered lock needle pressurizer of claim 1, wherein: The gear set housing (47) comprises a front shell (4701) and a rear shell (4705) that are buckled together, first and second installation holes (4702 and 4706) corresponding to the internally-threaded sleeve (38) are arranged on upper parts of the front shell (4701) and the rear shell (4705) respectively, a support column (4704) corresponding to an axle hole of the driven gear (39) is arranged on a lower part of the front shell (4701), and a third installation hole (4707) corresponding to the driving block (4001) is arranged on a lower part of the rear shell (4705). First and second gear sleeves (43 and 44) are respectively arranged on outer parts of front and rear ends of the internally-threaded sleeve (38), a third gear sleeve (45) is arranged on an outer part of the driving block (4001), a fourth gear sleeve (46) is arranged in a middle part of a front end of the driving gear (40), and an inner diameter of the fourth gear sleeve (46) is matched with an outer diameter of the support column (4704).

7. An electrically powered lock needle pressuriser according to any one of claims 2 to 5, wherein: The shroud (33) is in a cylindrical shape in an inner diameter, a cylindrical support block (3701) matched with the inner diameter of the shroud (33) is arranged on a rear end of the propelling screw (37), or a guide groove (3302) in a cubic shape is arranged on an inner part of the shroud (33) along an axial direction, and a cubic guide block (3703) matched with the guide groove (3302) is arranged on a rear end of the propelling screw (37).

8. A pelvis fixation device based on the powered lock pin press of any of claims 1-7, characterized by: The utility model relates to a pelvic fixation device, which comprises a pelvic fixation device and an electric locking pin presser and a ball head locking pin adjuster arranged on the pelvic fixation device, the ball head locking pin adjuster comprises a clamping piece, an adjusting block (6) connected with the clamping piece and a first lock head (3) connected with the adjusting block (6) through a ball head rod, the ball head rod comprises a ball head (10) clamped in the adjusting block (6) and a connecting rod (11) fixed on the ball head (10), and the connecting rod (11) is fixedly connected with the first lock head (3); a through lock hole (5) is arranged on the first lock head (3), a first screw hole (4) in communication with the lock hole (5) is arranged on the first lock head (3), a first jacking bolt (2) is arranged in the first screw hole (4), and a handle (1) is arranged at the outer end of the first jacking bolt (2).

9. A pelvic fixation device according to claim 8, wherein: The adjusting block (6) is cylindrical, a through third screw hole (7) is formed in the middle of the adjusting block (6) along the axial direction, a stop ring (8) with an inner diameter smaller than the diameter of the ball head (10) is arranged at the top edge of the third screw hole (7), a first threaded column (12) is screwed in the third screw hole (7), a spherical groove (13) matched with the contour of the ball head (10) is arranged on the upper end surface of the first threaded column (12), and the lower end of the first threaded column (12) is connected with the clamping piece; The clamping piece comprises an upper clamping block (16) and a lower clamping block (22), the upper clamping block (16) and the lower clamping block (22) are respectively provided with corresponding first through holes (18) and second through holes (23) in the middle portions, a second threaded column (15) is coaxially fixedly arranged at the lower end of the first threaded column (12), a nut (28) is screwed on the second threaded column (15) after the lower end of the second threaded column (15) passes through the first through hole (18) and the second through hole (23), and the bottom surface of the upper clamping block (16) and the top surface of the lower clamping block (22) are provided with corresponding arc-shaped grooves.

10. A pelvic fixation device according to either of claims 8 or 9, wherein: The pelvic fixation device comprises two support frames and a plurality of fixing rods (31) arranged between the two support frames through fixing joints (57), the support frame is composed of an outer ring support (55), an inner ring support (56) and a connecting rod connected between the outer ring support (55) and the inner ring support (56), the support rod (54) of the electric locking pin presser is fixedly arranged on the fixing rod (31) through the fixing joint (57), and the ball head locking pin adjuster is fixedly arranged on the fixing rod (31) through the clamping piece.

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