Tibia osteotomy fixing device

Abstract

The utility model discloses a tibia osteotomy fixing device, which particularly relates to the technical field of medical instruments and comprises a connecting rod and an adjusting component arranged on the outer wall of the connecting rod. Through the arrangement of the clamping block assemblies, when tibia osteotomy is carried out on a patient through the fixing device, in order to prevent the situation that the patient moves disorderly during treatment, the accuracy of the tibia osteotomy cutting position is reduced, and the treatment effect on the patient is affected, the upper clamping block assembly and the lower clamping block assembly are opened by pressing a torsional spring, and the shank part of the patient is put into the clamping block assemblies; the proper osteotomy operation angle and position are determined by adjusting the upper rod and the lower rod, and after the position is determined, the clamping block is locked for preliminary fixation; the rubber pad on the inner side of the clamping block is adjusted by adjusting the knob screw rod of the clamping block, so that the clamping block is more attached to the leg of the patient, the near end of the tibia does not need to be punched in the operation process and then is fixed through a screw or a positioning pin, damage to the tibia of the patient is reduced, and the patient can recover faster after the operation.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and in particular relates to a tibial osteotomy fixation device. Background Art

[0002] Tibial osteotomy is used for the surgical treatment of osteoarthritis, and is often used for patients with knee osteoarthritis. When performing tibial osteotomy on patients with knee osteoarthritis, a fixation device is needed to fix the knee joint of the patient with knee osteoarthritis.

[0003] In addition, the existing tibial osteotomy surgical instrument assembly includes a tibial osteotomy guide, a tibial osteotomy guide base, a tibial osteotomy guide handle, a distal telescopic rod and an ankle joint fixing clamp. The current tibial osteotomy assembly is fixed in position by the ankle joint fixing clamp, the tibial cutting guide adjusts the tibial cutting position, and then screws are inserted to connect and fix the tibia and the tibial cutting guide. Otherwise, the instrument will swing left and right during the tibial osteotomy process, resulting in surgical failure. During this process, the proximal tibia needs to be drilled, causing proximal tibia damage. During osteotomy, the vibration generated by the osteotomy may still cause the screws to loosen, resulting in loose fixation and deviation of the osteotomy. The front and back wrapping fixation of the upper and lower ends of the patient's calf is not strong, and the tibial cutting guide is not highly adjustable in the up and down and left and right positions when treating different patients. Utility Model Content

[0004] The purpose of the utility model is to provide a tibial osteotomy fixation device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The cam is an adjustable speed screwdriver, and the adjustable speed screwdriver is abutted against the bottom of the cam, wherein the adjusting member is affixed to the upper and lower surfaces of the cam.

[0007] Preferably, the outer wall of the upper rod is fixedly connected to a connecting base, the inner side wall of the connecting base is slidably connected to a sliding block, a limiting groove is provided at the connecting portion of the inner side wall of the connecting base and the sliding block, the inner side wall of the connecting base is slidably connected to a connecting pulley located on one side of the sliding block, the inner wall of the connecting pulley is threadedly connected to a control bolt slidably connected to the outer wall of the connecting base, a pulley groove is provided at the connecting portion of the inner side wall of the connecting base and the connecting pulley, the inner wall of the connecting base is telescopically connected to a telescopic rod, the inner wall of the sliding block is telescopically connected to a lifting rod, the outer wall of the sliding block is threadedly connected to a positioning bolt slidably connected to the outer wall of the lifting rod, a positioning groove is provided at the connecting portion of the outer wall of the lifting rod and the positioning bolt, and a tibial osteotomy guide is provided on the top of the lifting rod.

[0008] Preferably, the lower rod forms a telescopic structure with the upper rod through an adjusting bolt and a clamping slot, and the clamping slot is opened in the surface of the lower rod in an "I" shape.

[0009] Preferably, the first clamping block and the second clamping block are arranged front-to-back symmetrically, with one set each at the top and the bottom.

[0010] Preferably, the rubber pad forms a telescopic structure through the knob screw and the second clamping block, the outer wall profile of the rubber pad is in an arc shape, and the rubber pad is elastic.

[0011] Preferably, the control bolt forms a sliding structure by connecting the pulley and the pulley groove and the limiting groove.

[0012] Preferably, an adjustment groove is provided at a connection position between the outer wall of the sliding block and the control bolt.

[0013] Preferably, the lifting rod forms a lifting structure with the slider through a positioning bolt and a positioning groove, the positioning groove is formed in an "I" shape on the surface of the lifting rod, and a connecting groove is formed at the connecting portion between the inner wall of the slider and the lifting rod.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] (1) The utility model provides a clamping block assembly on the outer wall of the connecting rod. When the patient's tibial osteotomy is performed through the fixing device, in order to prevent the patient from moving around during treatment, thereby reducing the accuracy of the tibial osteotomy cutting position and affecting the treatment effect on the patient, the upper and lower clamping block assemblies are first opened by pressing the torsion spring, and the patient's calf is placed in. The appropriate osteotomy angle and position are determined by adjusting the upper rod and the lower rod. After the position is confirmed, the clamping block is locked for preliminary fixation. The knob screw of the clamping block is then adjusted to adjust the rubber pad on the inner side of the clamping block, so that the clamping block fits the patient's leg better, making it unnecessary to drill holes in the proximal end of the tibia during the operation. The clamping block is then fixed by screws or positioning pins, thereby reducing damage to the patient's tibia and enabling the patient to recover faster after the operation.

[0016] (2) The utility model provides a lifting rod on the outer wall of the connecting base. When the patient's tibial osteotomy is performed through the fixing device, in order to improve the adjustment effect of the up and down and left and right positions of the tibial osteotomy guide and meet the treatment needs of different patients' knee joint positions, when the tibial osteotomy guide needs to be adjusted left and right, the connecting pulley is first slid along the inner wall of the pulley groove to drive the control bolt to slide along the inner wall of the limit groove, and the control bolt is rotated to make the control bolt slide into the inner wall of the slider to play a role in locking and fixing the left and right positions of the slider, and the positioning bolt is rotated to make the lifting rod slide along the inner wall of the slider, and the positioning bolt is rotated again to make the positioning bolt slide into the inner wall of the positioning groove to play a role in locking and fixing the height of the lifting rod, so as to achieve the effect of conveniently adjusting the up and down and left and right positions of the tibial osteotomy guide, thereby adjusting the osteotomy angle and amount, and making the surgical position more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the fixing device;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure when the upper rod and the lower rod are connected and coordinated;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure when the first clamping block and the second clamping block are connected and matched;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure when the control bolts and the connection base are connected;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the connection pulley and the pulley groove;

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure under the connection and cooperation of the positioning bolt and the positioning groove.

[0023] In the figure: 1. connecting rod; 11. adjusting assembly; 111. upper rod; 112. lower rod; 113. adjusting bolt; 114. slot; 2. clamping block assembly; 21. first clamping block; 22. second clamping block; 23. rubber pad; 24. knob screw; 3. torsion spring; 4. connecting base; 41. control bolt; 42. connecting pulley; 43. pulley groove; 44. limiting groove; 5. telescopic rod; 51. sliding block; 52. lifting rod; 53. positioning bolt; 54. positioning groove; 6. tibial osteotomy guide. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1:

[0026] See also Figure 1-Figure 3 As shown, a tibial osteotomy fixation device comprises a connecting rod 1 and an adjusting assembly 11 arranged on the outer wall of the connecting rod 1, the adjusting assembly 11 comprises an upper rod 111 and a lower rod 112 telescopically connected to the inner wall of the upper rod 111, the outer wall of the upper rod 111 is threadedly connected with an adjusting bolt 113 slidably connected to the outer wall of the lower rod 112, a slot 114 is provided at the connection position between the outer wall of the lower rod 112 and the adjusting bolt 113, the outer wall of the connecting rod 1 is provided with a clamping block assembly 2, the clamping block assembly 2 comprises a first clamping block 21 rotatably connected to the outer wall of the lower rod 112, and a second clamping block 22 rotatably connected to the outer wall of the lower rod 112 and located on one side of the first clamping block 21, the inner side wall of the second clamping block 22 is telescopically connected with a rubber pad 23, and the outer wall of the second clamping block 22 is threadedly connected with a knob screw 24 rotatably connected to the outer wall of the rubber pad 23 A torsion spring 3 is provided at the connection portion between the first clamping block 21 and the lower rod 112. When the patient undergoes tibial osteotomy through the fixing device, in order to prevent the patient from moving around during treatment, reduce the accuracy of the tibial osteotomy cutting position, and affect the treatment effect on the patient, first, the upper and lower clamping block assemblies 2 are opened by pressing the torsion spring 3, and the patient's calf part is placed in, and the appropriate osteotomy surgical angle and position are determined by adjusting the upper rod 111 and the lower rod 112. After confirming the position, the clamping block is locked for preliminary fixation; then the knob screw 24 of the clamping block is adjusted to adjust the rubber pad 23 on the inner side of the clamping block, so that the clamping block fits the patient's leg more closely, so that there is no need to drill the proximal end of the tibia during the operation, and then it is fixed by screws or positioning pins, which reduces the damage to the patient's tibia, thereby enabling the patient to recover faster after surgery.

[0027] Specifically, the lower rod 112 forms a telescopic structure with the upper rod 111 through the adjusting bolt 113 and the slot 114. The slot 114 is opened in the shape of an "I" on the surface of the lower rod 112, which is conducive to the sliding of the adjusting bolt 113 along the inner wall of the slot 114, thereby driving the telescopic movement between the lower rod 112 and the upper rod 111, thereby driving the effective adjustment of the spacing between the clamping block assembly 2.

[0028] Specifically, the first clamping block 21 and the second clamping block 22 are symmetrically arranged front and back, and there is one group each in the upper and lower parts, which is beneficial to effectively fix the upper and lower parts of the patient's knee.

[0029] Specifically, the rubber pad 23 forms a telescopic structure between the knob screw 24 and the second clamping block 22. The outer wall contour of the rubber pad 23 is arc-shaped, and the rubber pad 23 is elastic, which is conducive to the rotation of the knob screw 24, driving the rubber pad 23 to perform telescopic movement along the inner wall of the second clamping block 22, thereby playing a role in adjusting the clamping of the legs of different patients.

[0030] Embodiment 2:

[0031] refer to Figure 1-Figure 6As shown, the outer wall of the upper rod 111 is fixedly connected to the connecting base 4, the inner wall of the connecting base 4 is slidably connected to the slider 51, the connecting portion of the inner wall of the connecting base 4 and the slider 51 is provided with a limiting groove 44, the inner wall of the connecting base 4 is slidably connected to the connecting pulley 42 located on one side of the slider 51, the inner wall of the connecting pulley 42 is threadedly connected to the control bolt 41 slidably connected to the outer wall of the connecting base 4, the connecting portion of the inner wall of the connecting base 4 and the connecting pulley 42 is provided with a pulley groove 43, the inner wall of the connecting base 4 is telescopically connected to the telescopic rod 5, the inner wall of the slider 51 is telescopically connected to the lifting rod 52, the outer wall of the slider 51 is threadedly connected to the positioning bolt 53 slidably connected to the outer wall of the lifting rod 52, the outer wall of the lifting rod 52 and the positioning bolt 53 The connecting portion is provided with a positioning groove 54, and the top of the lifting rod 52 is provided with a tibial osteotomy guide 6. When the patient undergoes tibial osteotomy, in order to improve the adjustment effect of the up-down and left-right positions of the tibial osteotomy guide 6 and meet the treatment needs of the knee joint positions of different patients, when the tibial osteotomy guide 6 needs to be adjusted left-right, the connecting pulley 42 is firstly connected to slide along the inner wall of the pulley groove 43 to drive the control bolt 41 to slide along the inner wall of the limiting groove 44, and the control bolt 41 is rotated so that the control bolt 41 slides into the inner wall of the slider 51, thereby playing a role in locking and fixing the left-right position of the slider 51, and the positioning bolt 53 is rotated so that the lifting rod 52 slides along the inner wall of the slider 51, and the positioning bolt 53 is rotated again so that the positioning bolt 53 slides into the inner wall of the positioning groove 54, thereby playing a role in locking and fixing the height of the lifting rod 52, thereby achieving the effect of conveniently adjusting the up-down and left-right positions of the tibial osteotomy guide 6, thereby adjusting the osteotomy angle and amount, and making the surgical position more accurate.

[0032] Specifically, the control bolt 41 forms a sliding structure between the connecting pulley 42 and the pulley groove 43 and the limiting groove 44, which is conducive to the connecting pulley 42 sliding along the inner wall of the pulley groove 43, driving the control bolt 41 to slide along the inner wall of the limiting groove 44, thereby playing a role in adjusting and fixing the horizontal position of the slider 51.

[0033] Specifically, an adjustment groove is provided at the connection portion between the outer wall of the sliding block 51 and the control bolt 41 , which is conducive to conveniently adjusting the height of the lifting rod 52 through the opening of the adjustment groove.

[0034] Specifically, the lifting rod 52 forms a lifting structure with the slider 51 through the positioning bolt 53 and the positioning groove 54. The positioning groove 54 is arranged in the shape of an "I" on the surface of the lifting rod 52. A connecting groove is arranged at the connecting part between the inner wall of the slider 51 and the lifting rod 52, which is conducive to the positioning bolt 53 sliding along the inner wall of the positioning groove 54, driving the lifting rod 52 to slide along the inner wall of the slider 51, so as to achieve the effect of conveniently adjusting the up, down, left and right positions of the tibial osteotomy guide 6, thereby adjusting the osteotomy angle and amount, and making the surgical position more accurate.

[0035] Working principle: First, when the patient's tibial osteotomy is performed through the fixing device, in order to prevent the patient from moving around during treatment, reduce the accuracy of the tibial osteotomy cutting position, and affect the treatment effect on the patient, first press the torsion spring 3 to open the upper and lower clamping block assemblies 2, put the patient's calf part in, and determine the appropriate osteotomy surgical angle and position by adjusting the upper rod 111 and the lower rod 112. After confirming the position, lock the clamping block for preliminary fixation; then adjust the knob screw 24 of the clamping block to adjust the rubber pad 23 on the inside of the clamping block, so that the clamping block fits the patient's leg better, achieving the final firm fixation effect, so that there is no need to drill the proximal tibia during the operation, and then fix it with screws or positioning pins, reducing damage to the patient's tibia, thereby enabling the patient to recover faster after surgery.

[0036] Finally, when the patient's tibial osteotomy is performed through the fixing device, in order to improve the adjustment effect of the up-down and left-right positions of the tibial osteotomy guide 6 and meet the treatment needs of different patients' knee joint positions, when the tibial osteotomy guide 6 needs to be adjusted left-right, the connecting pulley 42 is firstly connected to slide along the inner wall of the pulley groove 43 to drive the control bolt 41 to slide along the inner wall of the limiting groove 44, and the control bolt 41 is rotated so that the control bolt 41 slides into the inner wall of the slider 51, thereby playing a role in locking and fixing the left-right position of the slider 51, and the positioning bolt 53 is rotated so that the lifting rod 52 slides along the inner wall of the slider 51, and the positioning bolt 53 is rotated again so that the positioning bolt 53 slides into the inner wall of the positioning groove 54, thereby playing a role in locking and fixing the height of the lifting rod 52, thereby achieving the effect of conveniently adjusting the up-down and left-right positions of the tibial osteotomy guide 6, thereby adjusting the osteotomy angle and amount, and making the surgical position more accurate.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tibial osteotomy fixation device, characterized in that: include: A connecting rod (1) and an adjusting assembly (11) arranged on the outer wall of the connecting rod (1), the adjusting assembly (11) comprising an upper rod (111) and a lower rod (112) telescopically connected to the inner wall of the upper rod (111), the outer wall of the upper rod (111) being threadedly connected to an adjusting bolt (113) slidably connected to the outer wall of the lower rod (112), a slot (114) being provided at a connection portion between the outer wall of the lower rod (112) and the adjusting bolt (113), the outer wall of the connecting rod (1) being provided with a clamping block assembly (2), the clamping block assembly (2) being provided with a clamping block assembly (2) The clamping block assembly (2) comprises a first clamping block (21) rotatably connected to the outer wall of the lower rod (112), and a second clamping block (22) rotatably connected to the outer wall of the lower rod (112) and located on one side of the first clamping block (21); the inner wall of the second clamping block (22) is telescopically connected to a rubber pad (23); the outer wall of the second clamping block (22) is threadedly connected to a knob screw (24) rotatably connected to the outer wall of the rubber pad (23); and a torsion spring (3) is provided at the connection portion between the first clamping block (21) and the lower rod (112).

2. A tibial osteotomy fixation device according to claim 1, characterized in that: The outer wall of the upper rod (111) is fixedly connected to a connecting base (4), the inner wall of the connecting base (4) is slidably connected to a slider (51), a limiting groove (44) is provided at a connection portion between the inner wall of the connecting base (4) and the slider (51), the inner wall of the connecting base (4) is slidably connected to a connecting pulley (42) located on one side of the slider (51), the inner wall of the connecting pulley (42) is threadedly connected to a control bolt (41) slidably connected to the outer wall of the connecting base (4), the inner wall of the connecting base (4) is threadedly connected to a control bolt (41) slidably connected to the outer wall of the connecting base (4), A pulley groove (43) is provided at the connection position between the side wall and the connecting pulley (42); a telescopic rod (5) is telescopically connected to the inner wall of the connecting base (4); a lifting rod (52) is telescopically connected to the inner wall of the sliding block (51); a positioning bolt (53) slidably connected to the outer wall of the lifting rod (52) is threadedly connected to the outer wall of the lifting rod (52); a positioning groove (54) is provided at the connection position between the outer wall of the lifting rod (52) and the positioning bolt (53); and a tibial osteotomy guide (6) is provided at the top of the lifting rod (52).

3. A tibial osteotomy fixation device according to claim 1, characterized in that: The lower rod (112) forms a telescopic structure with the upper rod (111) through an adjusting bolt (113) and a clamping groove (114); the clamping groove (114) is formed in a straight line shape on the surface of the lower rod (112).

4. The tibial osteotomy fixation device according to claim 1, characterized in that: The first clamping block (21) and the second clamping block (22) are arranged symmetrically in front and back, with one set each at the top and the bottom.

5. The tibial osteotomy fixation device according to claim 1, characterized in that: The rubber pad (23) forms a telescopic structure with the second clamping block (22) through the knob screw (24); the outer wall profile of the rubber pad (23) is in an arc shape, and the rubber pad (23) is elastic.

6. A tibial osteotomy fixation device according to claim 2, characterized in that: The control bolt (41) forms a sliding structure by connecting the pulley (42) and the pulley groove (43) with the limiting groove (44).

7. A tibial osteotomy fixation device according to claim 2, characterized in that: An adjustment groove is provided at a connection position between the outer wall of the sliding block (51) and the control bolt (41).

8. The tibial osteotomy fixation device according to claim 2, characterized in that: The lifting rod (52) forms a lifting structure with the slider (51) through a positioning bolt (53) and a positioning groove (54); the positioning groove (54) is formed in a straight line shape on the surface of the lifting rod (52); and a connecting groove is formed at the connection position between the inner wall of the slider (51) and the lifting rod (52).

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