Electric lock needle pressurizer and pelvis fixing device

Abstract

The invention 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 invention further relates to a pelvis fixing device. The pelvis fixing device comprises the pelvis fixator, the electric lock needle pressurizer and the 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 invention relates to the technical field of orthopedic surgery, and in particular to an electric locking needle pressurizer and a pelvic fixing device. Background Art

[0002] The pelvis is an important part of the human skeleton. The pelvis contains important organs and important blood vessels and nerves that control the lower limbs. With the development of industries such as construction and transportation, traffic accidents and other personal injury accidents occur frequently in daily life. Among them, the number of patients with multiple injuries and complex injuries of pelvic and acetabular fractures increases year by year. Human pelvic fractures are a serious trauma. Pelvic fractures are often accompanied by injuries to pelvic organs, blood vessels, nerves, etc. If not treated in time, it will cause serious danger to the patient's life. The current traditional treatment method is to reduce the fracture site by incision. Although this method can directly observe the injured area, since the pelvic surgical approach requires a large incision and extensive soft tissue stripping, it will cause the risk of damage to important blood vessels and nerves and increase the risk of incision infection. At the same time, a large amount of bleeding will occur during the treatment process, which will seriously endanger the patient's life and health in severe cases. Closed reduction of pelvic fractures has the advantages of small incisions, reduced infection risks, reduced damage to blood vessels and nerves in the surgical area, and fast recovery.

[0003] The current locking needle pressurizer is a manual adjustment device for the position of the bone needle, which places a high operating burden on the doctor, is prone to errors during the adjustment process, and has low surgical accuracy. In addition, the locking needle adjuster also plays an important role. When the bone needle is adjusted to a suitable position, the locking needle adjuster can fix the bone needle to prevent displacement during subsequent operations, thereby ensuring the stability and safety of the fracture site during the entire treatment process. In this regard, the present invention provides an electric locking needle pressurizer that can electrically adjust the bone needle to push and pull it back and forth to unlock and reposition the bone, reduce the doctor's operating burden, and improve the accuracy and success rate of the operation; the drive motor adopts a quick-release connection, which is convenient and flexible to use. In addition, the present invention also relates to a pelvic fixation device, which is easy to operate and shortens the operation time. The electric locking needle pressurizer is combined with a ball head locking needle adjuster, which can be pulled and fixed in position in multiple directions, thereby improving the safety and reliability of the operation. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an electric locking needle pressurizer, which can electrically adjust the bone needle to push and pull forward and backward to achieve bone unlocking and resetting, reduce the doctor's operating burden, and improve the accuracy and success rate of the operation; the driving motor adopts a quick-release connection, which is convenient and flexible to use. The present invention also provides a pelvic fixation device, which is easy to operate and shortens the operation time. The electric locking needle pressurizer is combined with a ball head locking needle adjuster, which can be pulled and fixed in position in multiple directions, improving the safety and reliability of the operation.

[0005] To solve the above problems, the technical solution adopted by the present invention is: An electric lock needle pressurizer, comprising: A gear set housing, wherein a driven gear and a driving gear meshing with each other are arranged inside, the driving gear is detachably connected to the output shaft of the driving motor, and an internal threaded sleeve is fixed in the middle of the driven gear; A propulsion screw, wherein a through hole is provided in the middle thereof along the axis and is threadedly connected in the internal thread sleeve; A second locking head is fixedly mounted at the front end of the advancing screw rod, a fourth through hole corresponding to the through hole is formed inside the second locking head, a fourth screw hole connected to the fourth through hole is formed on the side wall of the second locking head, and a second tightening bolt is screwed into the fourth screw hole; A locking nut, which is located between the gear set housing and the second locking head and is threadedly connected to the advancing screw; The support is fixedly arranged at the bottom of the gear set housing, and a support rod is fixedly arranged on the support.

[0006] As an embodiment of the present invention, a shield is arranged outside the rear end of the advancement screw, and the shield is fixed together with the gear set housing, and a third through hole corresponding to the bone needle is opened at the rear end of the shield; a motor housing is arranged outside the driving motor, and the shield and the motor housing are connected together by a movable clamp.

[0007] As an embodiment of the present invention, the gear set housing is provided with an external threaded sleeve on one side where the shield is provided, the shield and the motor housing are cylindrical, and the front end of the shield is provided with an internal thread matched with the external threaded sleeve.

[0008] As an embodiment of the present invention, a cylindrical driving block is fixedly provided in the middle of the rear end of the driving gear, and a hexagonal driving hole is provided at the outer end of the driving block, and a hexagonal motor conversion head matching the driving hole is fixedly provided at the end of the output shaft of the driving motor.

[0009] As an embodiment of the present invention, the movable clamp includes a first jaw and a second jaw which are symmetrically arranged, and the lower parts of the first jaw and the second jaw are respectively provided with a fifth arc groove and a seventh arc groove, and the upper parts of the first jaw and the second jaw are respectively provided with a sixth arc groove and an eighth arc groove; a circular first countersunk hole is provided in the middle of the outer wall of the first jaw, and a hexagonal second countersunk hole is provided in the middle of the side wall of the second jaw, and also includes a connecting bolt with a hexagonal prism at the tail end, and the connecting bolt passes through the second countersunk hole and the first countersunk hole in sequence and is screwed together with the knob, and the knob is provided with a threaded hole compatible with the connecting bolt.

[0010] As an embodiment of the present invention, the gear set housing includes a front housing and a rear housing that are buckled together, the upper portions of the front housing and the rear housing are respectively provided with a first mounting hole and a second mounting hole corresponding to the internal threaded sleeve, the lower portion of the front housing is provided with a support column corresponding to the shaft hole of the driven gear, and the lower portion of the rear housing is provided with a third mounting hole corresponding to the driving block; The front and rear ends of the internal threaded sleeve are respectively sleeved with a first gear sleeve and a second gear sleeve, the driving block is sleeved with a third gear sleeve, and the middle of the front end of the active gear is inserted with a fourth gear sleeve, and the inner diameter of the fourth gear sleeve is adapted to the outer diameter of the support column.

[0011] As an embodiment of the present invention, the inner diameter of the shield is cylindrical, and the rear end of the push screw is fixedly provided with a cylindrical support block that is compatible with the inner diameter of the shield, or a cubic guide groove is arranged axially inside the shield, and the rear end of the push screw is fixedly provided with a cubic guide block that is compatible with the guide groove.

[0012] A pelvic fixation device based on the above-mentioned electric locking needle pressurizer comprises a pelvic fixation device and an electric locking needle pressurizer and a ball head locking needle adjuster arranged on the pelvic fixation device, the ball head locking needle adjuster comprises a clamping member, an adjusting block connected to the clamping member and a first locking head connected to 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 fixed on the ball head, the connecting rod is fixedly connected to the first locking head; a through locking hole is arranged on the first locking head, a first screw hole connected to the locking hole is arranged on the first locking head, a first tightening bolt is arranged in the first screw hole, and a handle is arranged at the outer end of the first tightening bolt.

[0013] As an embodiment of the present invention, the adjustment block is cylindrical, and a third screw hole is provided in the middle thereof along the axial direction, and a retaining ring with an inner diameter smaller than the diameter of the ball head is provided at the top edge of the third screw hole; a first threaded column is threaded in the third screw hole, and a spherical groove matching the contour of the ball head is provided on the upper end surface of the first threaded column, and the lower end of the first threaded column is connected to the clamping member; The clamping member includes an upper clamping block and a lower clamping block, and corresponding first through holes and second through holes are respectively arranged in the middle of the upper clamping block and the lower clamping block. A second threaded column is coaxially fixed to the lower end of the first threaded column, and a nut is screwed on the lower end of the second threaded column after passing through the first through hole and the second through hole; corresponding arc grooves are arranged on the bottom surface of the upper clamping block and the top surface of the lower clamping block.

[0014] As an embodiment of the present invention, the pelvic fixer includes two support frames and a plurality of fixed rods arranged between the two support frames through fixed joints, the support frame is composed of an outer ring bracket, an inner ring bracket and a connecting rod connected between the outer ring bracket and the inner ring bracket, the support rod of the electric lock needle pressurizer is fixed on the fixed rod through a fixed joint, and the ball head lock needle adjuster is fixed on the fixed rod through a clamp.

[0015] The beneficial effects of adopting the above technical solution are: The electric locking needle pressurizer provided by the present invention can drive the advancement screw to move forward and backward through the driving motor and the gear assembly in the gear group housing, thereby driving the bone needle locked on the second locking head to move forward and backward for traction, and can electrically adjust the position of the bone needle to achieve unlocking and resetting of the bone, thereby reducing the doctor's operating burden and improving the accuracy and success rate of the operation; wherein the driving motor adopts a quick-release connection, the motor housing and the shield are connected together by a movable clip, and after the bone needle is fixed, the driving motor and the motor conversion head can be removed, which is convenient and flexible to use.

[0016] The present invention also provides a pelvic fixation device, which is composed of a pelvic fixator, an electric locking needle pressurizer and a ball head locking needle regulator. It is easy to operate and shortens the operation time. The electric locking needle pressurizer is combined with the ball head locking needle regulator to perform traction and position fixation in multiple directions, thereby improving the safety and reliability of the operation. The ball head locking needle regulator is composed of a first tightening bolt, a first locking head, an adjustment block, a ball head rod, a threaded column and a clamping piece. It has a simple and lightweight structure, is easy to produce and assemble, and the ball head locking needle regulator is fixed to the pelvic fixator by the clamping piece. The bone needle can be locked by rotating the handle, which is easy to operate. The ball head can rotate and tilt freely within a certain range, and the ball head can be locked by rotating the adjustment block, so that the bone needle can flexibly adjust its direction in three-dimensional space, which is particularly suitable for fractures of complex structures such as the pelvis. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the electric lock needle pressurizer in the present invention.

[0018] Figure 2 It is a schematic structural diagram of the electric lock needle pressurizer from another angle in the present invention.

[0019] Figure 3 It is a schematic diagram of the structure of the electric lock needle pressurizer in the present invention after removing the motor housing and the protective cover.

[0020] Figure 4 It is a structural schematic diagram of the advancing screw, the gear set housing, the locking nut and the support in the electric locking needle pressurizer of the present invention.

[0021] Figure 5It is a structural schematic diagram of the gear set housing, the second lock head and the support in the electric lock needle pressurizer of the present invention.

[0022] Figure 6 It is a structural schematic diagram of the advancing screw, the gear set housing and the locking nut in the electric locking needle pressurizer of the present invention.

[0023] Figure 7 It is a schematic diagram of the structure inside the outer shell of the propulsion screw and the gear set in the electric lock needle pressurizer of the present invention.

[0024] Figure 8 It is another angle structural schematic diagram of the propulsion screw and the gear set housing in the electric lock needle pressurizer of the present invention.

[0025] Fig. 9 It is a schematic diagram of the structure inside the housing of the gear set in the electric lock needle pressurizer of the present invention.

[0026] Fig.10 It is a schematic structural diagram from another angle of the interior of the gear set housing in the electric lock needle pressurizer of the present invention.

[0027] Fig.11 It is a structural schematic diagram of the movable clamping claw in the electric locking needle pressurizer of the present invention.

[0028] Fig.12 It is a schematic diagram of the structure of the movable clamp in the electric lock needle pressurizer of the present invention from another angle.

[0029] Fig.13 It is a structural schematic diagram of the connecting bolt and the knob in the electric lock needle pressurizer of the present invention.

[0030] Fig.14 It is a structural schematic diagram of the front shell of the electric lock needle pressurizer of the present invention.

[0031] Fig.15 It is a schematic structural diagram of the front shell of the electric lock needle pressurizer of the present invention from another angle.

[0032] Fig.16 It is a structural schematic diagram of the rear shell of the electric lock needle pressurizer of the present invention.

[0033] Fig.17 It is a structural schematic diagram of the protective cover in the electric lock needle pressurizer of the present invention.

[0034] Fig.18 It is another structural schematic diagram of the propulsion screw and the gear set housing in the electric lock needle pressurizer of the present invention.

[0035] Fig.19 It is another structural schematic diagram of the protective cover in the electric lock needle pressurizer of the present invention.

[0036] Fig. 20It is a schematic structural diagram of the pelvic fixing device of the present invention.

[0037] Fig.21 It is a structural schematic diagram of the ball head lock needle adjuster in the present invention.

[0038] Fig. 22 It is a schematic diagram of the main structure of the ball head lock needle adjuster in the present invention.

[0039] Fig.23 It is a schematic diagram of the exploded structure of the ball head lock needle adjuster in the present invention.

[0040] Fig.24 It is a structural schematic diagram of the adjusting block in the ball head lock needle adjuster of the present invention.

[0041] Fig.25 It is another angle structural schematic diagram of the adjustment block in the ball head lock needle adjuster of the present invention.

[0042] Fig.26 It is a structural schematic diagram of a ball head rod in a ball head locking needle adjuster of the present invention.

[0043] Fig. 27 It is a structural schematic diagram of a threaded column in a ball head lock needle adjuster of the present invention.

[0044] Fig.28 It is a schematic diagram of the structure of the threaded column in the ball head lock needle adjuster of the present invention at another angle.

[0045] Fig.29 It is a schematic structural diagram of a clamping member in a ball head lock needle adjuster of the present invention.

[0046] Fig.30 It is a schematic diagram of the structure of the clamping member in the ball head lock needle adjuster of the present invention from another angle.

[0047] Fig.31 It is a schematic structural diagram of an upper clamping block in a ball head lock needle adjuster of the present invention.

[0048] Fig.32 It is a structural schematic diagram of the lower clamping block in the ball head lock needle adjuster of the present invention.

[0049] Fig.33 It is a structural schematic diagram of a conical gasket in the ball head lock needle adjuster of the present invention.

[0050] Fig.34 It is a schematic structural diagram of the driving motor and the motor conversion head in the electric lock needle pressurizer of the present invention.

[0051] Fig.35 It is a schematic diagram of the exploded structure of the driving motor and the motor converter in the electric lock needle pressurizer of the present invention.

[0052] Wherein: 1 handle, 2 first tightening bolt, 3 first locking head, 4 first screw hole, 401 second screw hole, 5 locking hole, 6 adjusting block, 7 third screw hole, 8 retaining 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 through hole, 19 first arc groove, 20 second arc groove, 21 inserting block, 22 lower clamping block, 23 second through hole, 24 third arc groove, 25 fourth arc groove, 26 slot, 27 tapered hole, 28 nut, 29 tapered gasket, 30 bone needle, 31 fixing rod; 32 motor housing, 33 shield, 3301 third through hole, 3302 guide groove, 34 movable clip, 3401 first clamping jaw, 3402 first countersunk hole, 3403 knob, 3404 fifth arc groove, 3405 sixth arc groove, 3406 second clamping jaw, 3407 second countersunk hole, 3408 seventh arc groove, 3409 eighth arc 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 internal thread sleeve, 39 driven gear, 40 driving gear, 4001 driving block, 4002 driving Moving hole, 41 motor conversion head, 4101 fifth screw hole, 42 jack, 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 external threaded sleeve, 49 locking nut, 50 second locking head, 5001 fourth screw hole, 51 fourth through hole, 52 second tightening bolt, 53 support, 54 support rod, 55 outer ring bracket, 56 inner ring bracket, 57 fixing section, 58 manual pressurizer, 59 coupler. DETAILED DESCRIPTION

[0053] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention is clearly and completely described below in conjunction with specific embodiments.

[0054] like Figure 1-Figure 6 An electric lock needle pressurizer is shown, comprising: The gear set housing 47 has a driven gear 39 and a driving gear 40 meshing with each other disposed therein. The driving gear 40 is detachably connected to the output shaft of the driving motor 35. An internal threaded sleeve 38 is fixedly disposed in the middle of the driven gear 39. The advancing screw 37 has a through hole 3702 disposed in the middle thereof along the axis, and is threadedly connected in the internal thread sleeve 38; The second lock head 50 is fixedly mounted on the front end of the advancing screw rod 37. A fourth through hole 51 corresponding to the through hole 3702 is formed inside the second lock head 50. A fourth screw hole 5001 connected to the fourth through hole 51 is formed on the side wall of the second lock head 50. A second jacking bolt 52 is screwed into the fourth screw hole 5001. A handle 1 is provided on the second jacking bolt 52. The locking nut 49 is located between the gear set housing 47 and the second locking head 50, and is threaded onto the advancement screw 37; when the driving motor 35 completes pressurizing the bone needle 30, the locking nut 49 is tightened onto the gear set housing 47 to prevent the advancement screw 37 from loosening.

[0055] The support 53 is fixed to the bottom of the gear set housing 47, and a support rod 54 is fixed to the support 53; the support 53 is U-shaped, consisting of two vertical parts and an arc-shaped part, and is detachably installed on the bottom of the gear set housing 47 by bolts, and the support rod 54 is vertically fixed to the bottom of the support 53 and is arranged along the radial direction of the arc-shaped part.

[0056] The electric locking needle pressurizer provided by the present invention has a bone needle 30 disposed in the through hole 3702 of the advancing screw 37 and the fourth through hole 51, and the bone needle 30 can be locked by the second tightening bolt 52; the advancing screw 37 can be driven to move forward and backward by the driving motor 35 and the gear assembly in the gear assembly housing 47, thereby driving the bone needle 30 locked on the second locking head 50 to move forward and backward to achieve controllable traction, and the position of the bone needle 30 can be electrically adjusted to achieve the unlocking and resetting of the bone, thereby reducing the operating burden of the doctor and improving the accuracy and success rate of the operation. The driving motor 35 is connected by a quick-release type, and the motor housing 32 and the shield 33 are connected together by a movable clip 34. After the bone needle 30 is fixed, the driving motor 35 and the motor conversion head 41 can be removed, which is convenient and flexible to use, and the driving motor 35 can be used in combination with different pressurizers.

[0057] In this embodiment, a shield 33 is provided on the outside of the rear end of the advancement screw 37, and the shield 33 is fixed together with the gear set housing 47. A third through hole 3301 corresponding to the bone needle 30 is opened at the rear end of the shield 33; the driving motor 35 is a planetary reduction motor, and a motor housing 32 is provided on the outside thereof. The wire 36 passes through the motor housing 32 and is connected to the driving motor 35. The shield 33 and the motor housing 32 are connected together by a movable clamp 34.

[0058] like Figure 3 As shown, the gear set housing 47 is provided with an external threaded sleeve 48 on one side where the shield 33 is provided, the shield 33 and the motor housing 32 are cylindrical, and the front end of the shield 33 is provided with an internal thread that matches the external threaded sleeve 48. The external threaded sleeve 48 is connected to the gear set housing 47 through a flange.

[0059] like Fig.10 , Fig.34 and Fig.35 As shown, a cylindrical driving block 4001 is fixedly provided at the middle of the rear end of the driving gear 40, and a hexagonal driving hole 4002 is provided at the outer end of the driving block 4001, and a hexagonal motor conversion head 41 that matches the driving hole 4002 is fixedly provided at the end of the output shaft 3501 of the driving motor 35, so that the output shaft 3501 of the driving motor 35 can drive the driving block 4001 to rotate and is easy to separate. Specifically, a plug hole 42 is provided at the middle of one end of the motor conversion head 41, and the end of the output shaft 3501 of the driving motor 35 and the plug hole 42 are both large bow shapes composed of major arcs and chords, and a fifth screw hole 4101 perpendicular to the plane of the plug hole 42 is provided on the side of the motor conversion head 41, and the motor conversion head 41 is fastened to the output shaft 3501 by screws.

[0060] like Figure 11-13 As shown, the movable clamp 34 includes a first clamping jaw 3401 and a second clamping jaw 3406 which are symmetrically arranged, and the lower part of the first clamping jaw 3401 and the second clamping jaw 3406 are respectively provided with a fifth arc groove 3404 and a seventh arc groove 3408, and the upper part of the first clamping jaw 3401 and the second clamping jaw 3406 are respectively provided with a sixth arc groove 3405 and an eighth arc groove 3409; a circular first countersunk hole 3402 is provided in the middle of the outer wall of the first clamping jaw 3401, and a hexagonal second countersunk hole 3407 is provided in the middle of the side wall of the second clamping jaw 3406, and also includes a connecting bolt 3401 with a hexagonal prism at the tail end, and the connecting bolt 3401 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 knob 3403 is provided with a threaded hole compatible with the connecting bolt 3401.

[0061] like Figure 14-16 As shown, the gear set housing 47 includes a front housing 4701 and a rear housing 4705 that are buckled together and connected together by bolts, and the upper portions of the front housing 4701 and the rear housing 4705 are respectively provided with a first mounting hole 4702 and a second mounting hole 4706 corresponding to the internal threaded sleeve 38, and the lower portion of the front housing 4701 is provided with a support column 4704 corresponding to the middle shaft hole of the driven gear 39, and the lower portion of the rear housing 4705 is provided with a third mounting hole 4707 corresponding to the driving block 4001; The front and rear ends of the internal threaded sleeve 38 are respectively sleeved with a first gear sleeve 43 and a second gear sleeve 44, the driving block 4001 is sleeved with a third gear sleeve 45, 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, and the third gear sleeve 45 is matched with the third mounting hole 4707. A fourth gear sleeve 46 is inserted into the shaft hole in the middle of the front end 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; A protruding ring 4703 is disposed outside the first mounting hole 4702. The protruding ring 4703 increases the operating space, and when the advancing screw 37 is locked by the locking nut 49, it is convenient for the operator to rotate it by hand.

[0062] like Figure 3 and Fig.17 As shown, the inner diameter of the shield 33 is cylindrical, and the rear end of the push screw 37 is fixed with a cylindrical support block 3701 that matches the inner diameter of the shield 33. The support block 3701 cooperates with the inner wall of the shield 33 to prevent the push screw from shaking in the shield 33. Since the bone needle 30 is fixed on the bone and the push screw 37 is fixed together with the bone needle 30, when the internal thread sleeve 38 drives the push screw 37 to move forward and backward, the push screw 37 will not rotate. As a further optimization, Fig.18 and Fig.19 As shown, in order to prevent the propulsion screw 37 from rotating, a cubic guide groove 3302 is provided inside the shield 33 along the axial direction, and a cubic guide block 3703 adapted to the guide groove 3302 is fixedly provided at the rear end of the propulsion screw 37, and the guide block 3703 can slide along the length direction of the guide groove 3302. In addition, the guide block 3703 and the guide groove 3302 are also provided with corresponding rounded corners at the side walls. The support block 3701 and the guide block 3703 are both provided with through holes corresponding to the through holes 3702 in the middle.

[0063] like Fig. 20A pelvic fixation device based on the above-mentioned electric locking needle pressurizer is shown, which includes a pelvic fixation device and an electric locking needle pressurizer and a ball-head locking needle regulator arranged on the pelvic fixation device; the pelvic fixation device includes two support frames and a plurality of fixed rods 31 arranged between the two support frames through a fixed 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 locking needle pressurizer is fixed on the fixed rod 31 through a fixed joint 57, and the ball-head locking needle regulator is fixed on the fixed rod 31 through a clamp. A coupling 59 is provided at the bottom of the support frame, which can fix the support frame on the bed. The pelvic fixation device is easy to operate and shortens the operation time. The electric locking needle pressurizer is combined with the ball-head locking needle regulator to perform traction and position fixation in multiple directions, thereby improving the safety and reliability of the operation. The specific structure of the pelvic fixator can refer to the existing patent with authorization announcement number CN212592368U previously applied by the applicant, which describes the pelvic fixator, fixation section 57 and coupling device 59 in detail. At that time, a manual pressurizer 58 was used to pressurize the bone needle 30.

[0064] like Figure 21-23 As shown, the ball head lock needle adjuster includes a clamping member, an adjustment block 6 connected to the clamping member and a first lock head 3 connected to the adjustment block 6 through a ball head rod, the ball head rod includes a ball head 10 clamped in the adjustment block 6 and a connecting rod 11 fixed on the ball head 10, and the connecting rod 11 is fixedly connected to the first lock head 3; a through lock hole 5 is provided on the first lock head 3, a first screw hole 4 connected to the lock hole 5 is provided on the first lock head 3, a first tightening bolt 2 is provided in the first screw hole 4, and a handle 1 is provided at the outer end of the first tightening bolt 2. After the bone needle 30 is inserted into the lock hole 5, the bone needle 30 can be locked by rotating the handle 1.

[0065] The ball head locking needle adjuster is composed of a first jacking bolt 2, a first locking head 3, an adjusting block 6, a ball head rod, a threaded column (a first threaded column 12 and a second threaded column 15) and a clamping piece. The structure is simple and light, easy to produce and easy to assemble. The ball head locking needle adjuster is fixed to the pelvic fixer by the clamping piece, and the bone needle 30 can be locked by rotating the handle 1, which is easy to operate. The ball head 10 can rotate and tilt freely within a certain range, and the ball head 10 can be locked by rotating the adjusting block 6, so that the bone needle 30 can flexibly adjust its direction in three-dimensional space, which is particularly suitable for fractures of complex structures such as the pelvis.

[0066] like Figure 24-28 As shown, in this embodiment, the adjustment block 6 is cylindrical, and a third screw hole 7 is formed in the middle thereof along the axial direction, and a retaining ring 8 having an inner diameter smaller than that of the ball head 10 is provided at the top edge of the third screw hole 7; A first threaded column 12 is threadedly connected in the third threaded hole 7 . A spherical groove 13 matching the contour of the ball head 10 is provided on the upper end surface of the first threaded column 12 . The lower end of the first threaded column 12 is connected to a clamping member.

[0067] like Figure 29-Figure 32 As shown, the clamping member includes an upper clamping block 16 and a lower clamping block 22, and corresponding first through holes 18 and second through holes 23 are respectively provided in the middle of the upper clamping block 16 and the lower clamping block 22, a second threaded column 15 is coaxially fixed to the lower end of the first threaded column 12, and a nut 28 is screwed on the lower end of the second threaded column 15 after passing through the first through hole 18 and the second through hole 23; corresponding arc grooves are provided on the bottom surface of the upper clamping block 16 and the top surface of the lower clamping block 22.

[0068] As a further optimization, Fig.30 and Fig.32 As shown, the bottom surface of the upper clamping block 16 is fixed with an inserting block 21, and the top surface of the lower clamping block 22 is provided with a slot 26 corresponding to the inserting block 21. By providing the inserting block 21 and the slot 26, the upper clamping block 16 and the lower clamping block 22 can be prevented from rotating relative to each other.

[0069] like Fig.28 and Fig.31 As shown, a clamping block 14 is provided between the first threaded column 12 and the second threaded column 15, and a clamping groove 17 corresponding to the clamping block 14 is provided on the top of the upper clamping block 16. The clamping block 14 and the clamping groove 17 can prevent the threaded column and the upper clamping block 16 from rotating relative to each other. In this embodiment, the clamping block 14 and the clamping groove 17 are both large arcs composed of major arcs and chords.

[0070] like Fig. 22 As shown, the bottom edge of the upper clamping block 16 is provided with a first arc groove 19 and a second arc groove 20 of different diameters, and the top edge of the lower clamping block 22 is provided with a third arc groove 24 corresponding to the first arc groove 19 and a fourth arc groove 25 corresponding to the second arc groove 20. By providing two groups of arc grooves of different sizes, the clamping member can be fixed on the fixing rods 31 of different thicknesses in the pelvic fixer.

[0071] like Fig.30 and Fig.33 As shown, the bottom of the second through hole 23 is a tapered hole 27 that is smaller inside and larger outside, and a tapered gasket 29 is arranged in the tapered hole 27. By arranging the tapered gasket 29, the clamping piece can be fastened more firmly.

[0072] The first lock head 3 is in a horizontal cylindrical shape, the lock hole 5 is arranged along its axis, the first screw hole 4 is arranged at the top along the radial direction of the first lock head 3, the bottom of the first lock head 3 is provided with a second screw hole 401 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 connecting rod 11 is provided with an external thread on the outside, 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 arranged coaxially. The second screw hole 401 can be connected or not connected with the lock hole 5, or the second screw hole 401 is not provided with a thread, and the connecting rod 11 can be inserted and fixed directly by welding.

[0073] The adjusting block 6 is a vertically arranged cylindrical shape, and its side surface is symmetrically provided with cutting planes 9, which facilitates the rotation of the adjusting block 6 and locks the position of the ball head 10. The clamping member is cylindrical in shape as a whole, wherein the upper clamping block 16 and the lower clamping block 22 are both cylindrical.

[0074] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electric lock needle pressurizer, characterized in that: It includes: A gear unit housing (47) is provided with a driven gear (39) and a driving gear (40) meshing with each other inside, the driving gear (40) is detachably connected to the output shaft of the driving motor (35), and an internal threaded sleeve (38) is fixedly provided at the middle of the driven gear (39); A propulsion screw (37), wherein a through hole (3702) is provided in the middle thereof along the axis and is threadedly connected in the internal thread sleeve (38); A second locking head (50) is fixedly mounted on the front end of the advancing screw rod (37); a fourth through hole (51) corresponding to the through hole (3702) is formed inside the second locking head (50); a fourth screw hole (5001) connected to the fourth through hole (51) is formed on the side wall of the second locking head (50); a second tightening bolt (52) is screwed into the fourth screw hole (5001); A locking nut (49), which is located between the gear unit housing (47) and the second locking head (50) and is threadedly connected to the advancing screw (37); A support (53) is fixedly mounted on the bottom of the gear unit housing (47), and a support rod (54) is fixedly mounted on the support (53).

2. The electric lock needle pressurizer according to claim 1, characterized in that: A shield (33) is disposed outside the rear end of the advancement screw (37), and the shield (33) is fixed together with the gear group housing (47), and a third through hole (3301) corresponding to the bone needle (30) is opened at the rear end of the shield (33); a motor housing (32) is disposed outside the driving motor (35), and the shield (33) and the motor housing (32) are connected together by a movable clamp (34).

3. The electric lock needle pressurizer according to claim 2, characterized in that: The gear unit housing (47) is provided with an external thread sleeve (48) on one side where the shield (33) is provided. The shield (33) and the motor housing (32) are cylindrical. The front end of the shield (33) is provided with an internal thread matching the external thread sleeve (48).

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

5. The electric lock needle pressurizer according to claim 4, characterized in that: The movable clamp (34) comprises a first clamping jaw (3401) and a second clamping jaw (3406) which are symmetrically arranged, wherein the lower parts of the first clamping jaw (3401) and the second clamping jaw (3406) are respectively provided with a fifth arc-shaped groove (3404) and a seventh arc-shaped groove (3408), and the upper parts of the first clamping jaw (3401) and the second clamping jaw (3406) are respectively provided with a sixth arc-shaped groove (3405) and an eighth arc-shaped groove (3409); the middle part of the outer wall of the first clamping jaw (3401) A circular first countersunk hole (3402) is provided, a hexagonal second countersunk hole (3407) is provided in the middle of the side wall of the second clamping jaw (3406), and also includes a connecting bolt (3401) with a hexagonal prism-shaped tail end, the connecting bolt (3401) passes through the second countersunk hole (3407) and the first countersunk hole (3402) in sequence and is screwed together with the knob (3403), and the knob (3403) is provided with a threaded hole that is compatible with the connecting bolt (3401).

6. The electric lock needle pressurizer according to claim 1, characterized in that: The gear set housing (47) comprises a front housing (4701) and a rear housing (4705) which are buckled together; the upper parts of the front housing (4701) and the rear housing (4705) are respectively provided with a first mounting hole (4702) and a second mounting hole (4706) corresponding to the internal threaded sleeve (38); the lower part of the front housing (4701) is provided with a support column (4704) corresponding to the shaft hole of the driven gear (39); and the lower part of the rear housing (4705) is provided with a third mounting hole (4707) corresponding to the driving block (4001); The front and rear ends of the internally threaded sleeve (38) are respectively sleeved with a first gear sleeve (43) and a second gear sleeve (44); the driving block (4001) is sleeved with a third gear sleeve (45); and a fourth gear sleeve (46) is inserted into the middle of the front end of the driving gear (40); the inner diameter of the fourth gear sleeve (46) is matched with the outer diameter of the support column (4704).

7. An electric lock needle pressurizer according to any one of claims 1 to 6, characterized in that: The inner diameter of the shield (33) is cylindrical, and a columnar support block (3701) matching the inner diameter of the shield (33) is fixedly provided at the rear end of the advancement screw (37), or a cubic guide groove (3302) is provided inside the shield (33) along the axial direction, and a cubic guide block (3703) matching the guide groove (3302) is fixedly provided at the rear end of the advancement screw (37).

8. A pelvic fixation device based on the electric locking needle pressurizer according to any one of claims 1 to 7, characterized in that: The invention comprises a pelvic fixator, an electric locking needle pressurizer and a ball head locking needle adjuster arranged on the pelvic fixator, wherein the ball head locking needle adjuster comprises a clamping member, an adjusting block (6) connected to the clamping member, and a first locking head (3) connected to the adjusting block (6) via a ball head rod, wherein 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), wherein the connecting rod (11) is fixedly connected to the first locking head (3); a through locking hole (5) is arranged on the first locking head (3), a first screw hole (4) connected to the locking hole (5) is arranged on the first locking head (3), a first tightening bolt (2) is arranged in the first screw hole (4), and a handle (1) is arranged at the outer end of the first tightening bolt (2).

9. A pelvic fixation device according to claim 8, characterized in that: The adjusting block (6) is cylindrical, and a third screw hole 7 is formed in the middle thereof along the axial direction, and a retaining ring (8) having an inner diameter smaller than the diameter of the ball head (10) is provided at the top edge of the third screw hole 7; a first threaded column (12) is threadedly connected in the third screw hole 7, and a spherical groove (13) matching the contour of the ball head (10) is provided on the upper end surface of the first threaded column (12), and the lower end of the first threaded column (12) is connected to a clamping member; The clamping member 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); the lower end of the first threaded column (12) is coaxially fixed with a second threaded column (15); the lower end of the second threaded column (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 grooves.

10. A pelvic fixation device according to claim 8 or 9, characterized in that: The pelvic fixator comprises two support frames and a plurality of fixing rods (31) arranged between the two support frames via fixing joints (57); the support frame comprises 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 needle pressurizer is fixed to the fixing rod (31) via the fixing joint (57); and the ball head locking needle adjuster is fixed to the fixing rod (31) via a clamp.

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