阅读说明：本技术 一种膝关节环棒微动支架 (Knee joint ring rod micro-motion support ) 是由 张韦 贾粤青 于 2018-08-19 设计创作，主要内容包括：本发明公开了一种膝关节环棒微动支架,其特征在于其包括两个环棒微动支架和一个膝关节头,环棒微动支架分别位于膝关节头两侧,环棒微动支架包括双球碳纤维微动钉夹、双球碳纤维加压延长钉夹,位于双球碳纤维微动钉夹与双球碳纤维加压延长钉夹之间的Φ12mm碳棒、位于双球碳纤维微动钉夹与双球碳纤维加压延长钉夹之间的Φ8mm不锈钢螺杆、Φ12mm碳棒两端分别设有微动钉夹碳棒固定球和加压延长钉夹碳棒固定球,Φ8mm不锈钢螺杆两端分别设有微动钉夹螺杆固定球和加压延长钉夹螺杆固定球,采用双杆双球结构其锁紧后的支架稳定、抗扭转,双球锁紧更平衡、锁紧力更大。(The invention discloses a knee joint ring rod micro-motion bracket which is characterized by comprising two ring rod micro-motion brackets and a knee joint head, wherein the ring rod micro-motion brackets are respectively positioned at two sides of the knee joint head, each ring rod micro-motion bracket comprises a double-ball carbon fiber micro-motion nail clamp, a double-ball carbon fiber pressurizing and extending nail clamp, a carbon rod with the diameter of 12mm positioned between the double-ball carbon fiber micro-motion nail clamp and the double-ball carbon fiber pressurizing and extending nail clamp, and a stainless steel screw with the diameter of 8mm positioned between the double-ball carbon fiber micro-motion nail clamp and the double-ball carbon fiber pressurizing and extending nail clamp, the two ends of a phi 12mm carbon rod are respectively provided with a micro-motion nail-clamping carbon rod fixing ball and a pressurizing and extending nail-clamping carbon rod fixing ball, the two ends of a phi 8mm stainless steel screw rod are respectively provided with a micro-motion nail-clamping screw rod fixing ball and a pressurizing and extending nail-clamping screw rod fixing ball, a support is stable and anti-torsion after the support is locked by adopting a double-rod double-ball structure, double-ball locking is more balanced, and locking force is larger.)

1. A knee joint ring rod micro-motion bracket is characterized by comprising two ring rod micro-motion brackets (1) and a knee joint head (2), wherein the ring rod micro-motion brackets (1) are respectively positioned at two sides of the knee joint head (2), the ring rod micro-motion brackets (1) comprise a double-ball carbon fiber micro-motion nail clamp (11) and a double-ball carbon fiber pressurizing and extending nail clamp (12), a phi 12mm carbon rod (13) positioned between the double-ball carbon fiber micro-motion nail clamp (11) and the double-ball carbon fiber pressurizing and extending nail clamp (12), a phi 8mm stainless steel screw rod (14) positioned between the double-ball carbon fiber micro-motion nail clamp (11) and the double-ball carbon fiber pressurizing and extending nail clamp (12), and a micro-motion nail clamp carbon rod fixing ball (113) and a pressurizing and extending nail clamp carbon rod fixing ball (123) are respectively arranged at two ends of the phi 12mm stainless steel screw rod (14), and a micro-motion nail clamp screw rod fixing ball (114) and a pressurizing and extending nail clamp screw rod fixing ball (125) are respectively, the micro-motion nail clamp carbon rod fixing ball (113) and the micro-motion nail clamp screw rod fixing ball (114) are positioned in a ball head accommodating cavity (121) of the double-ball carbon fiber micro-motion nail clamp (11), the micro-motion nail clamp carbon rod fixing ball (113) is provided with a locking bolt hole (1141), the locking purpose can be achieved by pressurizing through a locking bolt, the locking bolt is loosened, the ball head can move in a 35-degree motion space within 360 degrees, a plurality of nail placing holes are respectively formed in the double-ball carbon fiber micro-motion nail clamp (11) and the double-ball carbon fiber pressurizing and extending nail clamp (12), nails can be placed on two sides of the double-ball micro-motion carbon fiber nail clamp (11) and the double-ball carbon fiber pressurizing and extending nail clamp (12) in a random and crossed mode, a bracket locked by adopting a double-rod double-ball structure is stable and is anti-torsion, double-ball locking is more balanced, locking force is larger, an included angle between the nail clamping nail direction and, the supporting force is increased, the double-ball carbon fiber micro-motion nail clamp (11) and the double-ball carbon fiber pressurizing and extending nail clamp (12) can be placed on one side or two sides of the guide rod according to the actual wound surface condition, so that the later nursing is convenient, the pressurizing and extending carbon rod fixing ball (123) and the pressurizing and extending screw rod fixing ball (125) are positioned in the ball head accommodating cavity (121) of the double-ball carbon fiber pressurizing and extending nail clamp (12), the knee joint head (2) comprises a spherical double-shaft eccentric wheel locking system (21) and knee joint connectors (22) which are positioned at two sides of the spherical double-shaft eccentric wheel locking system (21) and are respectively connected with the ring rod micro-motion bracket (1), one end of the knee joint connector (22) is connected with the spherical double-shaft eccentric wheel locking system (21) through an eccentric wheel shaft (224), and the other end of the knee joint connector is connected with the ring rod micro-motion support (1) through a knee joint connector carbon rod fixing ball (222) and a knee joint connector screw rod fixing ball (223).

2. A knee joint ring rod micromotion support (1) according to claim 1, characterized in that: the pressurizing extension nail clamp screw fixing ball (125) is provided with an adjusting hand wheel (126).

3. A knee joint ring rod micromotion support (1) according to claim 1, characterized in that: the pressurizing extension nail clamp carbon rod fixing ball (123) is also provided with a bone screw clamp (124).

4. A knee joint ring rod micromotion support (1) according to claim 1, characterized in that: the micro-motion nail clamp screw fixing ball (114) is provided with a spring (1141), a spring pressing sleeve (1142) and a fixed locking jack (1143).

5. A knee joint ring rod micromotion support (1) according to claim 1, characterized in that: the double-ball carbon fiber pressurizing and extending nail clamp (12) achieves the purpose of moving horizontally on a stainless steel screw (14) with the diameter of 8mm by adjusting an adjusting hand wheel (126) on a fixing ball (125) of a pressurizing and extending nail clamp screw.

6. A knee joint ring rod micromotion support (1) according to claim 1, characterized in that: the spherical double-shaft eccentric wheel locking system (21) comprises a spherical eccentric wheel (211), an eccentric wheel shaft hole (212) and a locking hole (213).

7. A knee joint ring rod micromotion support (1) according to claim 1, characterized in that: a fixing ball containing cavity (221) for containing a micro-motion nail-clamping carbon rod fixing ball (222) and a pressurizing extension nail-clamping screw rod fixing ball (223), an eccentric wheel shaft fixing hole (225) and an eccentric wheel shaft fixing pin (226) are arranged in the knee joint connector (22).

8. A knee joint ring rod micromotion support (1) according to claim 1, characterized in that: the double-ball carbon fiber micro-motion nail clamp (11) and the double-ball carbon fiber pressurizing and extending nail clamp (12) adopt a secondary injection molding process to realize the processing of two ball head accommodating cavities (121).

Technical Field

The invention relates to a knee joint ring rod micro-motion bracket, belonging to the technical field of external fixed brackets in medical instruments.

Background

At present, for fixation after fracture reduction, external fixation modes such as splints and plaster braces are usually adopted, or steel plate intramedullary nail internal fixation modes are adopted, dislocation is easy to occur in the moving of the external fixation modes, functional exercise cannot be performed, the wound injury of the internal fixation mode is large, and wound infection is easy to occur.

One of the existing common methods for treating limb fracture or deformity is to incise contracture ligaments of joints by adopting an operation method, and the treatment method can bring huge pain to patients; the other type is that the external fixator on the existing market is adopted to fix and shape the fracture part, the pain of the patient is small, the treatment effect is obvious, but the adjusting process of the existing external fixing support is too complex, the data adjusted by each part needs to be calculated by the aid of a computer, and the external fixing support is not suitable for all requirements of rehabilitation of each joint, particularly the fracture rehabilitation or deformity correction of the positions of knee joints and the like.

Disclosure of Invention

The invention aims to solve the technical problem that the prior art is not enough, and provides a knee joint ring rod micro-motion support which is characterized by comprising two ring rod micro-motion supports and a knee joint head, wherein the ring rod micro-motion supports are respectively positioned at two sides of the knee joint head, each ring rod micro-motion support comprises a double-ball carbon fiber micro-motion nail clamp and a double-ball carbon fiber pressurizing and extending nail clamp, a phi 12mm carbon rod positioned between the double-ball carbon fiber micro-motion nail clamp and the double-ball carbon fiber pressurizing and extending nail clamp, a phi 8mm stainless steel screw positioned between the double-ball carbon fiber micro-motion nail clamp and the double-ball carbon fiber pressurizing and extending nail clamp, and a micro-motion nail clamp carbon rod fixing ball and a pressurizing and extending nail clamp carbon rod fixing ball are respectively arranged at two ends of the phi 12mm carbon rod, and a micro-motion nail clamp screw fixing ball and a pressurizing and extending nail clamp screw fixing ball are respectively arranged at two ends of the phi 8mm stainless steel screw, and the micro-motion nail clamp carbon rod fixing ball and the The micro-motion nail clamp carbon rod fixing ball is provided with a locking bolt hole, the aim of locking is achieved by pressurizing through the locking bolt, the locking bolt is loosened, 35-degree moving space can be carried out in 360 degrees by the ball head, a plurality of nail placing holes are formed in the double-ball carbon fiber micro-motion nail clamp and the double-ball carbon fiber pressurizing and extending nail clamp respectively, nails can be placed on two sides of the double-ball carbon fiber micro-motion nail clamp and the double-ball carbon fiber pressurizing and extending nail clamp in an optional crossing mode, a bracket which is locked by the double-rod double-ball structure is stable and resistant to torsion, double-ball locking is more balanced and locking force is larger, the nail clamping nail direction and a guide mark form a 90-degree included angle, a lever effect is achieved when the nail clamping nail In the cavity, the knee joint head comprises a spherical double-shaft eccentric wheel locking system and knee joint connectors which are positioned on two sides of the spherical double-shaft eccentric wheel locking system and are respectively connected with the ring rod micro-motion support, one end of each knee joint connector is connected with the spherical double-shaft eccentric wheel locking system through an eccentric wheel shaft, and the other end of each knee joint connector is connected with the ring rod micro-motion support through a knee joint connector carbon rod fixing ball and a knee joint connector screw rod fixing ball.

The pressurizing extension nail clamp carbon rod fixing ball is also provided with a bone screw clamp.

The pressurizing extension nail clamp screw fixing ball is provided with an adjusting hand wheel.

The micro-motion nail clamping screw fixing ball is provided with a spring, a spring pressing sleeve and a fixing locking jack.

The double-ball carbon fiber pressurizing and extending nail clamp achieves the purpose of moving on a stainless steel screw rod with the diameter of 8mm in a horizontal mode by adjusting an adjusting hand wheel on a fixing ball of a pressurizing and extending nail clamp screw rod.

The spherical double-shaft eccentric wheel locking system comprises a spherical eccentric wheel, an eccentric wheel shaft hole and a locking hole.

The knee joint connector is internally provided with a fixing ball containing cavity, an eccentric wheel shaft fixing hole and an eccentric wheel shaft fixing pin, wherein the fixing ball containing cavity is used for containing a micro-motion nail clamp carbon rod fixing ball and a pressurizing extension nail clamp screw fixing ball.

The double-ball carbon fiber micro-motion nail clamp and the double-ball carbon fiber pressurizing and extending nail clamp adopt a secondary injection molding process to realize the processing of two ball head accommodating cavities.

The invention has the beneficial effects that:

1. the single head of the knee joint ring rod micro-motion bracket can rotate 35 degrees within the range of 360 degrees, the pressurizing extension ring can be adjusted randomly within the range of the guide rod and the bolt, compared with the similar micro-motion bracket, the flexibility is higher, double rods and double balls are adopted for locking, and the firmness after locking is higher;

2. the annular nail holder and the double rods form a 90-degree included angle, the nail holder plays a lever role when being stressed up and down, the nail holder can be placed on one side or two sides of the guide rod when the supporting force is increased, the nail holder can be conveniently placed on one side or two sides of the guide rod according to the requirements of the wound surface operation, after the nail is placed, the double rods can leave the wound surface, and the double rods are convenient to operate no matter in the early stage operation or the later stage nursing;

3. the double-ball carbon fiber micro-motion nail clamp and the double-ball carbon fiber pressurizing and extending nail clamp are uniformly provided with nail placing holes, nails can be placed at will through the nail placing holes, and the knee joint heads can also be placed flexibly; when the human knee joint rotates, the generated front and back angles and the length change generated during bending can meet the requirements of the bracket.

4. The paint joint head can be placed between the upper and lower 2cm and the left and right 2cm of the center of the human body joint axis. The paint joint connector connected with the micro-motion bracket is internally provided with two balls which are respectively connected with an upper carbon fiber guide rod phi 12, a lower carbon fiber guide rod phi 12 and a stainless steel screw rod phi 8, and the balance between a paint joint head and a human body joint surface can be adjusted after the two balls are connected. The spherical eccentric wheel in the spherical, double-shaft and eccentric wheel locking system can adjust the errors of angle and length caused by inaccurate placement of the bracket joint head when the human joint is bent, and the placement requirement is reduced. The operation time is shortened by the operation.

5. The double-spherical-ring locking joint head adopts a secondary injection molding process, is the first time in the industry of external fixed supports, greatly saves space, and is firmer in locking and larger in rotating angle.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a ring rod micro-motion bracket;

FIG. 3 is a schematic view of a double-ball carbon fiber micro-motion staple clamp;

FIG. 4 is a schematic view of a spherical dual-axis eccentric locking system;

FIG. 5 is a schematic view of a knee joint connector;

fig. 6 is a schematic view of a bone screw clip.

In fig. 1-6: 1-a ring rod micro-motion bracket; 2-knee joint head; 11-double-ball carbon fiber micro-motion nail clamp; 112-113-micro-motion nail clamping carbon rod fixing balls, 114-micro-motion nail clamping screw rod fixing balls, 1141-locking bolt holes, 1142-spring pressing sleeves; 1143 fixing the locking jack; 12-double-ball carbon fiber pressurizing and extending nail clamps; 121-ball head accommodating cavity, 122-body locking bolt; 123-pressurizing the extension nail to clamp the carbon rod fixing ball; 124-bone screw cartridge; 125-pressurizing the extended nail clamp screw fixing ball; 22-knee joint connector; 221-knee joint connector fixation ball receiving cavity; 222-knee joint carbon rod fixing ball; 223-knee joint screw fixing ball; 224-knee joint connector locking bolt, 225-eccentric axle fixing hole, 226-eccentric axle fixing pin; 30-bone screw clip; 201-nail cartridge; 302-bone screw.

Detailed Description

In order that the objects, aspects and advantages of the invention will become more apparent, the invention will be described by way of example only, and in connection with the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1 to 6, a knee joint ring rod micro-motion support is characterized by comprising two ring rod micro-motion supports 1 and a knee joint head 2, wherein the ring rod micro-motion supports 1 are respectively positioned at two sides of the knee joint head 2, the ring rod micro-motion supports 1 comprise a double-ball carbon fiber micro-motion nail clamp 11, a double-ball carbon fiber pressurizing and extending nail clamp 12, a phi 12mm carbon rod 13 positioned between the double-ball carbon fiber micro-motion nail clamp 11 and the double-ball carbon fiber pressurizing and extending nail clamp 12, a phi 8mm stainless steel screw 14 positioned between the double-ball carbon fiber micro-motion nail clamp 11 and the double-ball carbon fiber pressurizing and extending nail clamp 12, and a micro-motion nail clamp carbon rod fixing ball 113 and a pressurizing and extending nail clamp carbon rod fixing ball 123 are respectively arranged at two ends of the phi 8mm stainless steel screw 14, and a micro-motion nail clamp screw fixing ball 114 and a pressurizing and extending nail clamp screw fixing ball 125 are respectively arranged at two ends of the phi 8mm stainless steel screw 14, and the micro-motion nail clamp carbon rod fixing ball 113 and the micro- In the accommodating cavity 121, a locking bolt hole 1141 is arranged on the micro-motion nail clamp carbon rod fixing ball 113, the locking purpose can be achieved by pressurizing through a locking bolt, the locking bolt is loosened, the ball head can move within 35 degrees within 360 degrees, a plurality of nail placing holes are respectively arranged on the double-ball carbon fiber micro-motion nail clamp 11 and the double-ball carbon fiber pressurizing and extending nail clamp 12, nails can be placed on two sides of the double-ball carbon fiber micro-motion nail clamp 11 and the double-ball carbon fiber pressurizing and extending nail clamp 12 in an arbitrary crossing manner, a bracket is stable and anti-torsion after being locked by adopting a double-rod double-ball structure, double-ball locking is more balanced and locking force is larger, the nail clamping nail direction and a guide mark form an included angle of 90 degrees, a lever effect is achieved when the upper part and the lower part are stressed, the supporting force is increased, the double-ball carbon fiber micro-motion nail clamp 11 and the double-ball carbon fiber pressurizing and extending nail clamp 12 can, the pressurizing and extending carbon rod fixing ball 123 and the pressurizing and extending screw rod fixing ball 125 are located in the ball head accommodating cavity 121 of the double-ball carbon fiber pressurizing and extending nail clamp 12, the knee joint head 2 comprises a spherical double-shaft eccentric wheel locking system 21 and knee joint connectors 22 which are located on two sides of the spherical double-shaft eccentric wheel locking system 21 and are respectively connected with the ring rod micro-motion support 1, one end of each knee joint connector 22 is connected with the spherical double-shaft eccentric wheel locking system 21 through an eccentric wheel shaft 224, and the other end of each knee joint connector is connected with the ring rod micro-motion support 1 through a knee joint connector carbon rod fixing ball 223 and a knee joint connector screw rod fixing ball 224.

Further, the carbon rod fixing ball 123 for the pressurizing extension screw clamp is further provided with a bone screw clamp 124.

Further, the pressurizing extension nail clamp screw fixing ball 125 is provided with an adjusting handwheel 126.

Further, the micro-motion nail clamp screw fixing ball 114 is provided with a spring 1141, a spring pressing sleeve 1142 and a fixing and locking insertion hole 1143.

Further, the double-ball carbon fiber pressurizing and extending nail clamp 12 achieves the purpose of moving on the stainless steel screw 14 with the diameter of 8mm by adjusting the adjusting hand wheel 126 on the screw fixing ball 125 of the pressurizing and extending nail clamp.

Further, the spherical double-shaft eccentric locking system 21 comprises a spherical eccentric 211, an eccentric shaft hole 212 and a locking hole 213.

Further, a fixing ball accommodating cavity 221 for accommodating the micro-motion carbon rod fixing ball 113 and the pressurizing and extending nail clamping screw fixing ball 125, an eccentric wheel shaft fixing hole 225 and an eccentric wheel shaft fixing pin 226 are arranged in the knee joint connector 22.

Further, the double-ball carbon fiber micro-motion nail clamp 11 and the double-ball carbon fiber pressurizing and extending nail clamp 12 realize the processing of the two ball head accommodating cavities 121 by adopting a secondary injection molding process.

When the bracket is used, the two ring rod micromotion brackets 1 of the bracket are respectively fixed on the tibia and the femur by placing bone screws, and the knee joint head 2 is positioned at the knee joint. The locking purpose is achieved by pressurizing through a locking bolt, the locking bolt is loosened, 35-degree movement can be carried out by a ball head within 360 degrees, a plurality of nail placing holes are formed in the double-ball carbon fiber micro-motion nail clamp 11 and the double-ball carbon fiber pressurizing extension nail clamp 12 respectively, the bone screw nail clamps can be fixed in the nail placing holes, nails can be placed on two sides of the annular nail clamp in an optional crossing mode, a locked bracket is stable and anti-torsion by adopting a double-rod double-ball structure, double-ball locking is more balanced, locking force is larger, the direction of the nail clamping nail and a guide mark form a 90-degree included angle, a lever effect is achieved when the nail clamping nail clamps are stressed up and down, supporting force is increased, the front angle and the rear angle of the double-shaft connection adjustable joint are rotated, the length change of the eccentric wheel adjustable joint is required when the joint. According to the actual wound surface condition, the double-ball carbon fiber micro-motion nail clamp 11 and the double-ball carbon fiber pressurizing and extending nail clamp 12 can be placed on one side or two sides of the guide rod, so that the later-stage nursing is facilitated.

It should be understood that the above-mentioned embodiments are only illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes or modifications made according to the spirit of the main technical scheme of the invention are covered in the protection scope of the invention.