CN113693674A - Fixing support - Google Patents

Abstract

The application provides a fixed bolster, fixed bolster includes fixed module and adjusting module. The fixing module comprises a first bone pin and a fixing seat, the first bone pin is connected with the fixing seat, and the first bone pin is used for being fixed with a tibialis body. The adjusting module comprises a second spicule and an adjusting mechanism, the second spicule is connected with the adjusting mechanism, and the second spicule is used for being fixed with the tibial plateau; the adjusting mechanism is movably connected with the fixed seat so as to drive the tibial platform to move relative to the tibial body through the second bone pin, thereby adjusting the relative position of the tibial platform and the tibial body. When the fixed support is used for adjusting the tibial platform, the operation is convenient and reliable, the correction and the positioning of the tibial platform are synchronously carried out, the relative position of the tibial platform and the tibial body is accurate, the tibial platform is not easy to shift, the operation efficiency is high, the treatment effect is good, and the operation success rate is high.

Description

Fixing support

Technical Field

The invention relates to the field of medical equipment, in particular to a fixing support.

Background

Knee osteoarthritis is often accompanied by knee varus deformity, and load stress distribution change in joints is generated, so that imbalance of load of medial and lateral condyles is caused, the progress of the knee osteoarthritis is accelerated, and the symptoms are gradually increased. The clinical surgical treatment scheme comprises total knee joint replacement, unicondylar replacement, fibula osteotomy, high tibial osteotomy and the like. The joint replacement realizes the treatment of the gonitis by excising diseased bone tissues and related soft tissues and implanting a prosthesis, sacrifices the cruciate ligaments and the inherent soft tissue tension, loses the inherent kinematics and proprioception, but is commonly used for old people and has very poor applicability to middle-aged and young sick people. Fibula osteotomy usually causes the shortness of lower limbs, instability of the upper tibiofibular joint, easy damage to common peroneal nerve and other complications, and has less clinical application. The high-position osteotomy of the tibial body reserves the original bone tissue, ligament, soft tissue and the like of a human body, and transfers the lower limb force line from the inner compartment of the knee joint which is subjected to inflammation and abrasion to the relatively normal outer compartment by cutting the bone at the near end of the tibial body, thereby obviously achieving the purpose of relieving the arthritis. It is often used for early and middle stage knee osteoarthritis, and for posterior or avoidance of knee replacement. Tibial body high osteotomies are divided into lateral closed wedge osteotomies and medial open wedge osteotomies. The lower limbs are shortened after the lateral closed wedge-shaped osteotomy, the correction degree is limited, fibula osteotomy is needed, and the like, so that the clinical application is less. The lower limb force line can be corrected more accurately by matching the inner side open wedge-shaped osteotomy with the inner fixation, the correction angle is relatively large, but the osteotomy end has long healing time, the bone needs to be implanted due to the overlarge bone gap, the non-healing rate is high, the requirement on an operator is large, and the clinical effect is greatly influenced by the technology.

The inventor researches and discovers that the existing knee joint osteoarthritis treatment instrument has the following defects:

the knee joint positioning effect and the treatment effect are poor.

Disclosure of Invention

The invention aims to provide a fixing bracket which can improve the accuracy of tibial plateau positioning, and has good tibial plateau correction effect and good knee joint treatment effect.

The embodiment of the invention is realized by the following steps:

the present invention provides a fixing bracket, comprising:

the fixing module comprises a first bone pin and a fixed seat, the first bone pin is connected with the fixed seat, and the first bone pin is used for being fixed with a tibialis body; the adjusting module comprises a second spicule and an adjusting mechanism, the second spicule is connected with the adjusting mechanism, and the second spicule is used for being fixed with the tibial plateau; the adjusting mechanism is movably connected with the fixed seat so as to drive the tibial platform to move relative to the tibial body through the second bone pin, thereby adjusting the relative position of the tibial platform and the tibial body.

In an optional embodiment, the fixing module further includes a rotating base and a first locking member, the rotating base is connected with the fixing base through the first locking member, the first locking member has a first unlocking state and a first locking state which are switched with each other, and when the first locking member is in the first unlocking state, the rotating base can rotate around a first axis relative to the fixing base; when the locking mechanism is in the first locking state, the rotating seat and the fixed seat are relatively fixed.

In an optional embodiment, the fixing module further comprises an adjusting ball head and a second locking piece, the adjusting ball head is connected with the rotating seat through the second locking piece, and the second locking piece has a second unlocking state and a second locking state which are switched with each other; when the adjusting ball head is in a second unlocking state, the adjusting ball head can rotate relative to the rotating seat; when the adjusting ball head is in a second locking state, the adjusting ball head and the rotating seat are relatively fixed; the first spicule is connected with the adjusting ball head.

In an optional implementation mode, the adjusting ball head comprises a locking spherical shell and a threaded rod, the locking spherical shell comprises a plurality of spherical petals, the spherical petals are connected with one end of the threaded rod and are arranged at intervals in the circumferential direction of the threaded rod, and the spherical petals jointly define a clamping space; the threaded rod is provided with a through hole communicated with the clamping space; the first spicule penetrates through the through hole and the clamping space simultaneously;

the second locking piece comprises a connecting spherical shell and a nut which are connected, the second locking piece is sleeved outside the threaded rod, and the nut is in threaded fit with the threaded rod;

the rotating seat is provided with a first spherical positioning hole and a second spherical positioning hole which are communicated, and the locking spherical shell and the connecting spherical shell are respectively arranged in the first spherical positioning hole and the second spherical positioning hole.

In an optional embodiment, the adjusting mechanism comprises a sliding seat, a first rotating head, a second rotating head and a third rotating head, and the sliding seat is slidably connected with the fixed seat along a preset direction; the first rotating head is rotatably matched with the sliding seat around a second axis; the second rotary head is rotatably matched with the first rotary head around a third axis; the third rotary head is rotatably engaged with the second rotary head about a fourth axis; the second spicule is connected with the third rotating head;

wherein any two of the second axis, the third axis and the fourth axis have an included angle.

In an alternative embodiment, the sliding seat and the fixed seat are slidably connected through a dovetail structure or a T-shaped structure.

In an alternative embodiment, the first rotating head is rotatably connected with the sliding seat through a first rotating shaft; the second rotating head is provided with first rotating holes and second rotating holes which are arranged at intervals, a second rotating shaft is inserted in the first rotating holes, and the second rotating head is rotatably connected with the first rotating head through the second rotating shaft; and a third rotating shaft is inserted in the second rotating hole, and the third rotating head and the second rotating head are rotatably connected through the third rotating shaft.

In an alternative embodiment, the second rotating head includes a first connector and a second connector, and the first rotating hole is provided on the first connector; the second rotating hole is formed in the second connecting head; the peripheral surface of the second connector is provided with worm gear teeth; the third rotating head is rotatably connected with a worm, the worm is meshed with the gear teeth of the worm, and the worm and the third rotating head are relatively fixed in the axial extension direction of the worm.

In an alternative embodiment, the third rotating head comprises a third connector rotatably engaged with the second rotating head and a fixing clip slidably engaged with the third connector, the second bone pin being provided on the fixing clip.

In an alternative embodiment, the third rotary head further includes a driving screw, the driving screw is rotatably engaged with the third connector, and the driving screw and the third connector are relatively fixed in the axial extension direction of the driving screw; the driving screw is in threaded connection with the fixing clamp and used for driving the fixing clamp to slide relative to the third connector.

The embodiment of the invention has the beneficial effects that:

in conclusion, the fixed bolster that this embodiment provided, including fixed module and adjusting module, fixed module includes continuous first spicule and fixing base, and adjusting module includes continuous second spicule and adjustment mechanism. When the fixing seat is used, the first bone needle is firstly placed into the tibialis body, and the fixing seat and the tibialis body are relatively fixed. Then, implanting a second bone pin into the tibial platform, so that the tibial platform, the tibial body, the fixing module and the adjusting module form an integral system, operating the adjusting mechanism to enable the adjusting mechanism to drive the second bone pin to move, and driving the tibial platform to move relative to the tibial body through the second bone pin, so as to adjust the relative position of the tibial platform relative to the tibial body, and finally enabling the tibial platform to be in a substantially horizontal state, namely a normal state. After the position adjustment of tibial plateau is completed, the structural form of the adjusting mechanism keeps fixed, the relative position of the adjusting mechanism and the fixing seat keeps unchanged, the system formed by the fixing support, the tibial plateau and the tibial body is in a stable state, in other words, after the position adjustment of the tibial plateau relative to the tibial body is completed, the fixation of the relative positions of the tibial plateau and the tibial body is realized, the position adjustment and the fixation of the tibial plateau are synchronously performed, the synchronous completion is realized, compared with the prior art, the adjustment of the position of the tibial plateau is performed firstly, then the fixation of the position of the tibial plateau is performed by using an instrument, the operation is more reasonable, the position of the tibial plateau is more accurate, the displacement is difficult, and the treatment effect is good.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural view of a fixing bracket according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a fixing module according to an embodiment of the present invention;

FIG. 3 is an exploded view of a fixing module according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a positioning head according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an adjusting ball head according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a conditioning module according to an embodiment of the present invention;

FIG. 7 is an exploded view of a conditioning module according to an embodiment of the present invention;

FIG. 8 is a schematic structural view of a mounting head according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a first spin head according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a second spin head according to an embodiment of the present invention;

fig. 11 is a schematic structural view of a third spin head according to an embodiment of the present invention;

fig. 12 is a schematic view of an application of the fixation bracket to adjust the tibial plateau of an embodiment of the present invention (only the second spicule of the fixation bracket is shown).

Icon:

001-shin bone; 002-tibial plateau; 100-a fixed module; 110-a first spicule; 120-a fixed seat; 121-a slide; 122-a limit groove; 123-a first fixing hole; 124-second fixing hole; 130-a rotating base; 131-an arc-shaped plate; 132-mounting a flat plate; 133-strip shaped fixing holes; 134-positioning head; 1341-a first spherically shaped locating hole; 1342-a second spherically shaped locating hole; 140-adjusting ball head; 141-locking spherical shell; 1411-spherical petals; 1412-a first clamping space; 142-a threaded rod; 150 — a first locking member; 160-a second locking member; 161-connecting the spherical shell; 162-a nut; 200-a regulation module; 210-a second spicule; 220-an adjustment mechanism; 221-a sliding seat; 2211-a glide slot; 222-a mounting head; 2221-body; 2222-third locking piece; 2223-a compact; 2224-rotation slot; 223-a first rotary head; 2231-a mount; 22311-a bottom plate; 22312-a first side panel; 22313-a second side panel; 22314-locking plate; 22315-locking grooves; 2232-a first rotating shaft; 2233-a second rotating shaft; 2234-an annular groove; 224-a second rotator head; 2241-a first connector; 2242-a second connector; 2243-a first rotation aperture; 2244-a second rotation hole; 2245-worm gear teeth; 225-a third rotary head; 2251-a third connector; 22511-guide projection; 22512-guide groove; 2252-a retaining clip; 22521-a substrate; 22522-locking plate; 22523-fifth locking element; 22524-connecting tab; 22525-a second clamping space; 2253-worm; 2254-adjusting screw; 2255-third axis of rotation.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

At present, when treating knee osteoarthritis, the relative positions of the tibial platform 002 and the tibial body 001 are adjusted by using the correction frame, the positions of the tibial platform 002 and the tibial body 001 are kept fixed by using the correction frame after the adjustment, and then spicules fixed on the spicule clamp are respectively placed and fixed on the tibial body 001 and the tibial platform 002 to complete the positioning. Thus, the operation is complicated and the operation efficiency is low; in addition, the bone needle is arranged in the tibial platform 002 and then is arranged in the tibial body 001 and the tibial platform 002 after the position of the tibial platform 002 is adjusted, so that the position offset of the tibial platform 002 and the tibial body 001 is easily caused, the risk of operation failure is increased, and the operation treatment is not facilitated.

Referring to fig. 1 to 11, in view of this, a designer designs a fixing bracket, which is convenient and reliable to operate, performs correction and positioning synchronously, has an accurate relative position between the tibial platform 002 and the tibial body 001, is not easy to shift, and has high operation efficiency, good treatment effect and high operation success rate.

Referring to fig. 1, in the present embodiment, the fixing bracket includes a fixing module 100 and an adjusting module 200. The fixing module 100 includes a first bone pin 110 and a fixing base 120, the first bone pin 110 is connected to the fixing base 120, and the first bone pin 110 is used for fixing with the tibialis body 001. The adjustment module 200 comprises a second spicule 210 and an adjustment mechanism 220, the second spicule 210 is connected with the adjustment mechanism 220, and the second spicule 210 is used for being fixed with the tibial platform 002; the adjusting mechanism 220 is movably connected to the fixing base 120 to drive the tibial platform 002 to move relative to the tibial body 001 through the second bone pin 210, so as to adjust the relative position between the tibial platform 002 and the tibial body 001.

The fixing bracket provided by the embodiment comprises a fixing module 100 and an adjusting module 200, wherein the fixing module 100 comprises a first spicule 110 and a fixing seat 120 which are connected, and the adjusting module 200 comprises a second spicule 210 and an adjusting mechanism 220 which are connected. When the fixing seat is used, the first bone needle 110 is firstly placed into the tibial body 001, so that the fixing seat 120 and the tibial body 001 are fixed relatively. Then, the second bone pin 210 is implanted into the tibial platform 002, so that the tibial platform 002, the tibial body 001, the fixing module 100 and the adjusting module 200 form a system, the adjusting mechanism 220 is operated to make the adjusting mechanism 220 drive the second bone pin 210 to move, the tibial platform 002 is driven by the second bone pin 210 to move relative to the tibial body 001, so as to adjust the relative position of the tibial platform 002 relative to the tibial body 001, and finally the tibial platform 002 is in a substantially horizontal state, that is, in a normal state. After the position adjustment of tibial platform 002 is completed, the structural form of adjusting mechanism 220 is kept fixed, the relative position between adjusting mechanism 220 and fixing base 120 is kept unchanged, the fixing support, the system formed by tibial platform 002 and tibial body 001 is in a stable state, in other words, after the position adjustment of tibial platform 002 relative to tibial body 001 is completed, the fixation of the relative positions of tibial platform 002 and tibial body 001 is also realized, the position adjustment and the fixation of tibial platform 002 are synchronously performed, the synchronous completion is performed, compared with the prior art, the position adjustment of tibial platform 002 is performed, then the instrument is utilized to fix the position of tibial platform 002, the operation is more reasonable, the position of tibial platform 002 is more accurate, the displacement is difficult, and the treatment effect is good.

Referring to fig. 2-5, in the present embodiment, the fixing module 100 further includes a rotating base 130, an adjusting ball 140, a first locking member 150, and a second locking member 160. The rotating base 130 is connected to the fixed base 120 through the first locking member 150, and the rotating base 130 can rotate around the first axis relative to the fixed base 120. The adjusting ball 140 is connected to the rotary base 130 through a second locking member 160, and the adjusting ball 140 and the rotary base 130 form a spherical hinge, so that the adjusting ball 140 can freely rotate in a conical range relative to the rotary base 130.

Referring to fig. 3, optionally, the fixing base 120 is a substantially square block, the fixing base 120 has a first side surface and a second side surface that are opposite to each other, the first side surface is provided with a sliding portion 121, and the sliding portion 121 may be a dovetail structure or a "T" shaped structure. The sliding portion 121 extends in the extending direction of the first axis. The second side surface is provided with a limiting groove 122 and a first fixing hole 123, the bottom wall of the limiting groove 122 is an arc-shaped wall, and the bottom wall of the limiting groove 122 is provided with a second fixing hole 124. The first fixing holes 123 and the second fixing holes 124 are circular holes, and the number of the first fixing holes 123 and the second fixing holes 124 is set as required, for example, in the embodiment, the number of the first fixing holes 123 is four, four first fixing holes 123 are equally divided into two groups, each group includes two first fixing holes 123, and the two groups of first fixing holes 123 are respectively located on two sides of the limiting groove 122 in the width direction; one positioning piece is screwed in each first fixing hole 123; the number of the second fixing holes 124 is two.

Referring to fig. 3 and 4, optionally, the rotating base 130 includes an arc plate 131 and a mounting plate 132 connected to each other, and two strip-shaped fixing holes 133 are formed in the arc plate 131. Two positioning heads 134 are disposed on the mounting plate 132, each positioning head 134 is provided with a first spherical positioning hole 1341 and a second spherical positioning hole 1342, which are connected to each other, each of the first spherical positioning hole 1341 and the second spherical positioning hole 1342 is a hemispherical hole, and a hemispherical orifice of the first spherical positioning hole 1341 deviates from a hemispherical orifice of the second spherical positioning hole 1342, that is, the hemispherical orifices of the first spherical positioning hole 1341 and the second spherical positioning hole 1342 are respectively located on two opposite side surfaces of the positioning head 134. During the assembly, the arc 131 of roating seat 130 imbeds in the spacing groove 122, and the intrados of arc 131 is laminated with the tank bottom wall of spacing groove 122, and two bar fixed orificess 133 communicate with two second fixed orificess 124 respectively, and every bar fixed orifices 133 extends along the circumference of tank bottom wall. The first locking members 150 are bolts, one first locking member 150 penetrates through each of the strip-shaped fixing holes 133, and the first locking member 150 is screwed in the corresponding second fixing hole 124. The first locking member 150 has a first unlocking state and a first locking state which are switched with each other, and in the first unlocking state, the rotating base 130 can rotate around the first axis relative to the fixed base 120, and in the process, the first locking member 150 can slide relative to the strip-shaped fixing hole 133 in the extending direction of the strip-shaped fixing hole 133; when the rotating base 130 and the fixing base 120 are in the first locking state, the rotating base 130 and the fixing base 120 are relatively fixed, at this time, the first locking member 150 is screwed in the second fixing hole 124, the first locking member 150 presses the arc-shaped plate 131 in the limiting groove 122, and the arc-shaped plate 131 and the limiting groove 122 are relatively fixed by using friction force.

Optionally, each positioning head 134 is configured to be connected to one adjusting ball head 140, that is, two adjusting ball heads 140 may be configured on the rotating base 130, and the two adjusting ball heads 140 are respectively connected to the two positioning heads 134. Each adjustment ball 140 can be connected to a first bone pin 110. In the present embodiment, an example of the adjustment knob 140 and the positioning knob 134 are described.

Referring to fig. 5, the adjusting ball head 140 includes a locking spherical shell 141 and a threaded rod 142, the locking spherical shell 141 includes a plurality of spherical petals 1411, the plurality of spherical petals 1411 are connected to one end of the threaded rod 142 and are uniformly arranged at intervals in the circumferential direction of the threaded rod 142, and the plurality of spherical petals 1411 together define a clamping space; threaded rod 142 is provided with the through-hole with the centre gripping space intercommunication, and the through-hole is cylindrical hole, and through-hole, threaded rod 142 and the coaxial setting of centre gripping space. It should be understood that the locking spherical shell 141 and the threaded rod 142 may be integrally formed. The adjusting ball head 140 is connected with the positioning head 134 through a second locking member 160, and the second locking member 160 has a second unlocking state and a second locking state which are switched with each other; in a second unlocked state, the adjustment knob 140 can rotate relative to the positioning knob 134 within the tapered region; in the second locked position, the adjustment knob 140 is fixed relative to the positioning knob 134.

Alternatively, the second locking member 160 includes a coupling spherical shell 161 and a nut 162 coupled together, the coupling spherical shell 161 being a hemispherical shell, and the nut 162 being fixed to one end of a circular opening of the hemispherical shell.

In this embodiment, the first bone pin 110 is assembled to the positioning head 134 of the rotary base 130 through the adjustment ball head 140. Specifically, the end of the threaded rod 142 of the adjusting ball 140 is inserted into the first spherical positioning hole 1341 and extends out of the second spherical positioning hole 1342, so that the locking ball 141 of the adjusting ball 140 can be located in the first spherical positioning hole 1341, and the locking ball 141 will not disengage from the first spherical positioning hole 1341 and enter the second spherical positioning hole 1342. Then, the second locking member 160 is sleeved outside the threaded rod 142, the connecting spherical shell 161 of the second locking member 160 is inserted into the second spherical positioning hole 1342, and the nut 162 of the second locking member 160 is screwed on the threaded rod 142. Finally, the first bone pin 110 is simultaneously inserted into the through hole of the threaded rod 142 and the first clamping space 1412 of the locking spherical shell 141. When the nut 162 is screwed, the clamping force of the nut 162 and the locking spherical shell 141 for clamping the positioning head 134 can be adjusted, when the angle of the first spicule 110 relative to the positioning head 134 needs to be adjusted, the nut 162 is unscrewed, the nut 162 and the locking spherical shell 141 are not clamped on the positioning head 134, that is, the distance between the plurality of spherical petals 1411 is large, and the plurality of spherical petals are not folded together, at this time, the locking spherical shell 141 and the connecting spherical shell 161 can rotate in the conical area relative to the positioning head 134, so that the first spicule 110 is driven to move, and the angle of the first spicule 110 is adjusted. After the angle adjustment of the first spicule 110 is completed, the nut 162 is screwed, the plurality of spherical petals 1411 are pulled into the first spherical positioning hole 1341, and the plurality of spherical petals 1411 clasp the first spicule 110, so as to lock the first spicule 110 and the locking spherical shell 141, at this time, the position of the first spicule 110 relative to the positioning head 134 is fixed, that is, the position of the first spicule 110 relative to the rotating base 130 is fixed.

It will be appreciated that the first spicule 110 is also able to slide relative to the threaded rod 142 when the nut 162 is in the unscrewed state, thereby adjusting the position of the first spicule 110 relative to the rotating seat 130 in the direction of its axial extension.

It should be understood that the present embodiment provides two first bone pins 110 on the rotary base 130, and both first bone fractures are used for implanting into the tibial body 001, so that the position of the fixed base 120 relative to the tibial body 001 is more stable. Moreover, each first spicule 110 is independently configured through the adjusting ball head 140, each first spicule 110 can be independently adjusted, the two parts are not affected with each other, and the adjusting device is convenient to adjust, use and wide in application range.

Referring to fig. 6-11, in the present embodiment, optionally, the adjusting mechanism 220 includes a sliding seat 221, a mounting head 222, a first rotating head 223, a second rotating head 224 and a third rotating head 225, wherein the sliding seat 221 is slidably connected to the fixing seat 120 along a predetermined direction; the mounting head 222 is fixed on the sliding seat 221, and the first rotating head 223 is rotatably matched with the mounting head 222 around a second axis; the second swivel 224 is rotatably engaged with the first swivel 223 about a third axis; the third rotor head 225 is rotatably engaged with the second rotor head 224 about a fourth axis; the second bone needle 210 is connected with the third rotator head 225. Any two of the second axis, the third axis and the fourth axis have an included angle, and the included angle is an acute angle or an obtuse angle. In this embodiment, the second axis coincides with the first axis, and the second axis, the third axis, and the fourth axis are mutually perpendicular in pairs.

Optionally, the sliding seat 221 is a bar-shaped rod, a sliding groove 2211 is disposed on the sliding seat 221, the sliding groove 2211 is a dovetail groove or a "T" shaped groove, and the sliding groove 2211 is used for sliding fit with the sliding portion 121 on the fixing seat 120. It should be understood that the shape structure of the sliding slot 2211 can be matched with the shape structure of the sliding part 121, for example, the sliding slot 2211 and the sliding part 121 are dovetail structures or "T" structures matched with each other, and the sliding process is smooth and reliable. Moreover, the end of the positioning element screwed into the first fixing hole 123 can be abutted against the sliding seat 221, so that the positioning element can lock the sliding seat 221 and the fixing seat 120 by rotating the positioning element, or the sliding seat 221 and the fixing seat 120 can slide relatively.

Referring to fig. 8, optionally, the mounting head 222 includes a body 2221, a third locking member 2222 and a pressing block 2223, and the body 2221 and the sliding seat 221 are fixedly connected by screws. The body 2221 is provided with a rotating groove 2224, the pressing block 2223 is arranged in the rotating groove 2224, and the pressing block 2223 has a convex portion for abutting against the first rotating head 223; the third locking member 2222 is threadedly engaged with the body 2221, and the third locking member 2222 can be abutted against the pressing block 2223, and drives the protrusion of the pressing block 2223 to slide relative to the rotating groove 2224.

Referring to fig. 9, optionally, the first rotating head 223 includes a mounting seat 2231, a first rotating shaft 2232 and a second rotating shaft 2233, wherein the first rotating shaft 2232 is connected to the mounting seat 2231, and the second rotating shaft 2233 is connected to the mounting seat 2231. The first rotating shaft 2232 is perpendicular to the second rotating shaft 2233. First pivot 2232 is provided with annular groove 2234, and first pivot 2232 pegs graft in the mounting groove on body 2221, and the protruding portion joint on compact heap 2223 is in annular groove 2234, avoids first pivot 2232 to deviate from the notch of rotating groove 2224. The pressing block 2223 can be moved by screwing the third locking member 2222, so that the convex portion of the pressing block 2223 is pressed against the groove wall of the annular groove 2234, thereby fixing the first rotating shaft 2232 and the body 2221 so that the first rotating shaft 2232 and the body 2221 cannot rotate. When the angle of the first rotating head 223 with respect to the mounting head 222 needs to be adjusted, the third locking member 2222 is loosened, and the locking of the first rotating shaft 2232 by the pressing block 2223 is released.

Further, the mounting seat 2231 includes a bottom plate 22311, a first side plate 22312, a second side plate 22313, and a locking plate 22314, where the first side plate 22312 and the second side plate 22313 are both fixedly connected to and disposed opposite to the bottom plate 22311, the first rotating shaft 2232 is fixed at a middle position of the bottom plate 22311, and the first rotating shaft 2232 and the first side plate 22312 are located on two opposite plate surfaces of the bottom plate 22311. The second rotating shaft 2233 extends through both the first side panel 22312 and the second side panel 22313. The first side plate 22312 is provided with a locking groove 22315, the locking plate 22314 is embedded in the locking groove 22315, and the locking plate 22314 is relatively fixed with the first side plate 22312 in the circumferential direction of the second rotating shaft 2233, for example, the locking plate 22314 and the locking groove 22315 are rectangular. The locking plate 22314 can move relative to the locking slot 22315 along the axial extension of the second rotational shaft 2233, so that the first side plate 22312 can move closer to or farther away from the second side plate 22313. The locking plate 22314 is provided with a threaded hole. The second rotating shaft 2233 is screwed with the screw hole of the locking plate 22314, and the second rotating shaft 2233 and the second side plate 22313 are fixed relatively in the axial extension direction of the second rotating shaft 2233. When the second rotating shaft 2233 is rotated, the locking plate 22314 can move relative to the second rotating shaft 2233 along the axial extension direction of the second rotating shaft 2233, so as to drive the first side plate 22312 to move relative to the second side plate 22313, and the second rotating head 224 located between the first side plate 22312 and the second side plate 22313 can be clamped.

Referring to fig. 10, in the present embodiment, the second rotating head 224 includes a first connector 2241 and a second connector 2242 connected to each other, and the first connector 2241 is provided with a first rotating hole 2243; the second connector 2242 is provided with a second rotating hole 2244, and the axes of the first rotating hole 2243 and the second rotating hole 2244 are vertical and are mutually independent; worm gear teeth 2245 are arranged on the outer peripheral surface of the second connector 2242; the first connector 2241 is sleeved outside the second rotating shaft 2233, and the second connector 2242 can rotate around the axis of the second rotating shaft 2233 relative to the first rotating head 223.

Referring to fig. 11, further, the third rotating head 225 includes a third connector 2251, a fixing clip 2252, a worm 2253 and an adjusting screw 2254, the fixing clip 2252 is slidably engaged with the third connector 2251, and the second bone pin 210 is disposed on the fixing clip 2252. A worm 2253 is rotatably connected to the third connecting head 2251, and the worm 2253 is fixed relative to the third connecting head 2251 in the direction of the axis of the worm 2253. The third connector 2251 is rotatably connected to the second connector 2242 via a third shaft 2255. During assembly, the third rotating shaft 2255 penetrates through the third connector 2251 and the second rotating hole 2244 of the second connector 2242. The worm 2253 engages with worm teeth 2245 on the second connector 2242. In this way, by rotating the worm 2253, the worm 2253 can be rotated together with the third connection head 2251 relative to the worm wheel, i.e. a rotation of the third connection head 2251 relative to the second connection head 2242 about the axis of the third rotation shaft 2255 is achieved. The worm wheel and worm 2253 has a self-locking function, is not easy to rotate freely, and has a good positioning effect.

Obviously, in order to improve the structural stability of the third connector 2251 and the second connector 2242, when the relative angle between the two is not required to be adjusted, the relative positions of the two are more stable, and the second connector 2242 and the third connector 2251 can be connected by the fourth locking member. The fourth locking member may be a unitary structure with the third rotation shaft 2255, i.e., the third rotation shaft 2255 may be provided as a screw or bolt having a smooth shaft.

Further, a guide protrusion 22511 is provided on the third connector 2251, and a guide groove 22512 is provided on the guide protrusion 22511. The adjusting screw 2254 is rotatably connected to the third connecting head 2251 and is fixed relative to the axis of the adjusting screw 2254. A portion of the adjustment screw 2254 is located in the guide groove 22512.

Alternatively, the fixing clip 2252 includes a base plate 22521, a locking plate 22522, and a fifth locking piece 22523, wherein the base plate 22521 is provided with a connection protrusion 22524, and the connection protrusion 22524 is provided with a threaded hole; the base plate 22521 is slidably fitted with the guide protrusion 22511, and the connection protrusion 22524 is inserted into the guide groove 22512 and slidably fitted with the guide groove 22512. A threaded hole on the connection boss 22524 is threadedly engaged with the adjustment screw 2254. By rotating the adjusting screw 2254, the connecting protrusion 22524 can be driven to slide along the extending direction of the guiding groove 22512, so as to drive the fixing seat 120 to slide relative to the third connecting head 2251. The base 22521 and the lock plate 22522 are connected by a fifth lock 22523. Both the base plate 22521 and the locking plate 22522 together define a second clamping space 22525, the second clamping space 22525 being used for clamping the second bone pin 210. The fifth locking member 22523 is capable of adjusting the clamping force of the base plate 22521 and the locking plate 22522 so that the second bone pin 210 is relatively fixed with respect to the base plate 22521 and the locking plate 22522 or the second bone pin 210 is movable with respect to the second clamping space 22525.

It should be appreciated that the fifth lock 22523 may be a bolt or screw.

Further, in the present embodiment, the number of the locking plates 22522 is two, and the two locking plates 22522 are connected to the base plate 22521 via the fifth locking pieces 22523, respectively. Each of the locking plate 22522 and the base plate 22521 defines a second clamping space 22525. Thus, the fixing base 120 can be assembled with two second spicules 210, and the two second spicules 210 are independent and do not interfere with each other.

Furthermore, the axes of the two second spicules 210 are located in the same plane, that is, the axes of the two second spicules 210 define a plane, and the two second spicules 210 are simultaneously connected with the tibial platform 002, so that the structural stability of the tibial platform 002 and the tibial body 001 is improved, the position of the tibial platform 002 can be conveniently adjusted, and the rehabilitation of the patient is facilitated.

Referring to fig. 1 and 12, in an initial state of the fixing bracket provided in this embodiment, the first locking member 150, the second locking member 160, the positioning member, the third locking member 2222, the fourth locking member, and the fifth locking member 22523 are all in an unlocked state, the first bone pin 110 is first inserted into the threaded rod 142, and the first bone pin 110 is implanted into the tibial body 001; while the second bone pin 210 is inserted into the second clamping space 22525. Then, the position of the first bone pin 110 is adjusted, that is, the angle between the first bone pin 110 and the rotating plate is adjusted, and the angle between the rotating plate and the fixing plate is adjusted, after the adjustment is completed, the first bone pin 110 is locked by the first locking member 150 and the second locking member 160, so that the position of the first bone pin 110 relative to the fixing base 120 is fixed. Then, the sliding seat 221 is operated to slide relative to the fixed seat 120, so as to drive the second bone pin 210 to rise or fall, and thus the second bone pin 210 drives the tibial platform 002 to rise or fall relative to the tibial body 001. Then, the positioning member is locked, so that the sliding seat 221 is kept fixed relative to the fixed seat 120. The first rotary head 223, the second rotary head 224 and the third rotary head 225 are adjusted again, during the rotation, the second bone pin 210 drives the tibial platform 002 to rotate in different planes relative to the tibial body 001, and the second bone pin 210 can drive the fixing clip 2252 to adaptively slide relative to the third connector 2251, so as to finally adjust the second bone pin 210 to a position substantially in a horizontal state, and finally lock the third locking element 2222, the fourth locking element and the fifth locking element 22523, so as to fix the position of the second bone pin 210. So, the adjustment of tibial platform 002 for the position of shin bone body 001 has been realized through the adjustment to the relative position of first spicule 110 and second spicule 210, and when the position adjustment of tibial platform 002 and shin bone body 001 was accomplished, utilize first spicule 110 and second spicule 210 to realize tibial platform 002 and shin bone body 001 relative position's fixed, the regulation and the fixed synchronization of tibial platform 002 go on, the simple operation is reliable, be difficult for shifting behind tibial platform 002's the position adjustment, position accuracy is high, the treatment is effectual, the operation success rate is high.

It should be appreciated that the first rotary head 223, the second rotary head 224 and the third rotary head 225 cooperate to adjust the tibial platform 002 over a wide range, so as to adapt to different degrees of varus and valgus deformity of the knee joint, and the application range is wide.

In this embodiment, it should be noted that each locking member may be provided with a gasket.

In other embodiments, the end of each locking member may be provided with a hexagonal socket for facilitating the insertion and engagement with a tool such as a wrench for facilitating the rotation of the locking member.

In other embodiments, the first bone pin 110 and the second bone pin 210 are provided with polygonal surfaces for snap-fitting with the screwing tool, for example, the cross-sectional outer contour of the portion of the first bone pin 110 and the second bone pin 210 for snap-fitting with the screwing tool is triangular.

The fixing bracket provided by the embodiment is used for correcting and positioning the tibial platform 002 and the tibial body 001, can finish fixing the relative positions of the tibial platform 002 and the tibial body 001 when the position correction of the tibial platform 002 relative to the tibial body 001 is finished, and is convenient and reliable to operate; when the tibial platform 002 and the tibial body 001 are locked, external force is not easy to generate between the tibial platform 002 and the tibial body 001, the tibial platform 002 and the tibial body 001 are not easy to shift, the relative positions of the tibial platform 002 and the tibial body 001 are accurate and firm, the rehabilitation of a patient is facilitated, and the success rate of the operation is high.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A fixing bracket, comprising:

the fixing module (100) comprises a first bone pin (110) and a fixed seat (120), the first bone pin (110) is connected with the fixed seat (120), and the first bone pin (110) is used for being fixed with a tibialis body (001); the adjustment module (200) comprises a second bone pin (210) and an adjustment mechanism (220), the second bone pin (210) is connected with the adjustment mechanism (220), and the second bone pin (210) is used for being fixed with a tibial plateau (002); the adjusting mechanism (220) is movably connected with the fixed seat (120) so as to drive the tibial platform (002) to move relative to the tibial body (001) through the second bone pin (210), thereby adjusting the relative position of the tibial platform (002) and the tibial body (001).

2. The securing bracket according to claim 1, wherein:

the fixing module (100) further comprises a rotating base (130) and a first locking member (150), the rotating base (130) is connected with the fixing base (120) through the first locking member (150), the first locking member (150) has a first unlocking state and a first locking state which are mutually switched, and when the first unlocking state is achieved, the rotating base (130) can rotate around a first axis relative to the fixing base (120); when the locking mechanism is in the first locking state, the rotating seat (130) and the fixed seat (120) are relatively fixed.

3. The securing bracket of claim 2, wherein:

the fixing module (100) further comprises an adjusting ball head (140) and a second locking piece (160), wherein the adjusting ball head (140) is connected with the rotating base (130) through the second locking piece (160), and the second locking piece (160) has a second unlocking state and a second locking state which are mutually switched; when the adjusting ball head (140) is in the second unlocking state, the adjusting ball head can rotate relative to the rotating base (130); when in the second locking state, the adjusting ball head (140) and the rotating seat (130) are relatively fixed; the first spicule (110) is connected with the adjusting ball head (140).

4. The securing bracket according to claim 3, wherein:

the adjusting ball head (140) comprises a locking ball shell (141) and a threaded rod (142), the locking ball shell (141) comprises a plurality of spherical petals (1411), the spherical petals (1411) are connected with one end of the threaded rod (142) and are arranged at intervals in the circumferential direction of the threaded rod (142), and the spherical petals (1411) define a clamping space together; the threaded rod (142) is provided with a through hole communicated with the clamping space; the first spicule (110) is simultaneously arranged in the through hole and the clamping space in a penetrating way;

the second locking piece (160) comprises a connecting spherical shell (161) and a nut (162) which are connected, the second locking piece (160) is sleeved outside the threaded rod (142), and the nut (162) is in threaded fit with the threaded rod (142);

the rotating seat (130) is provided with a first spherical positioning hole (1341) and a second spherical positioning hole (1342) which are communicated with each other, and the locking spherical shell (141) and the connecting spherical shell (161) are respectively arranged in the first spherical positioning hole (1341) and the second spherical positioning hole (1342).

5. The fixation bracket of any one of claims 1-4, wherein:

the adjusting mechanism (220) comprises a sliding seat (221), a first rotating head (223), a second rotating head (224) and a third rotating head (225), wherein the sliding seat (221) is slidably connected with the fixed seat (120) along a preset direction; the first rotating head (223) is rotatably engaged with the sliding seat (221) about a second axis; -said second rotary head (224) is rotatably engaged with said first rotary head (223) about a third axis; -said third rotary head (225) is rotatably coupled with said second rotary head (224) about a fourth axis; the second bone pin (210) is connected with the third rotator head (225);

wherein any two of the second axis, the third axis, and the fourth axis have an included angle.

6. The securing bracket according to claim 5, wherein:

the sliding seat (221) and the fixed seat (120) are connected in a sliding mode through a dovetail structure or a T-shaped structure.

7. The securing bracket according to claim 5, wherein:

the first rotating head (223) is rotatably connected with the sliding seat (221) through a first rotating shaft (2232); the second rotating head (224) is provided with first rotating holes (2243) and second rotating holes (2244) which are arranged at intervals, a second rotating shaft (2233) is inserted into the first rotating holes (2243), and the second rotating head (224) is rotatably connected with the first rotating head (223) through the second rotating shaft (2233); a third rotation shaft (2255) is inserted into the second rotation hole (2244), and the third rotation head (225) and the second rotation head (224) are rotatably connected by the third rotation shaft (2255).

8. The securing bracket according to claim 7, wherein:

the second rotating head (224) comprises a first connector (2241) and a second connector (2242), and the first rotating hole (2243) is formed in the first connector (2241); the second rotating hole (2244) is formed in the second connector (2242); worm gear teeth (2245) are arranged on the outer peripheral surface of the second connector (2242); a worm (2253) is rotatably connected to the third rotary head (225), the worm (2253) meshes with the worm gear teeth (2245), and the worm (2253) and the third rotary head (225) are relatively fixed in the direction of the axis extension of the worm (2253).

9. The securing bracket according to claim 5, wherein:

the third rotating head (225) comprises a third connector (2251) and a retaining clip (2252), the third connector (2251) is rotatably engaged with the second rotating head (224), the retaining clip (2252) is slidably engaged with the third connector (2251), and the second bone pin (210) is disposed on the retaining clip (2252).

10. The securing bracket according to claim 9, wherein:

the third rotating head (225) further comprises a driving screw, the driving screw is rotatably matched with the third connector (2251), and the driving screw and the third connector (2251) are relatively fixed in the axial extension direction of the driving screw; the driving screw is in threaded connection with the fixing clamp (2252) and is used for driving the fixing clamp (2252) to slide relative to the third connector (2251).

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