CN104323834B - A postoperative bone corrector - Google Patents

Abstract

The invention relates to a postoperative bone corrector, which comprises a fixed frame, an adjusting component, a connecting rod component and a fixed joint component, wherein the fixed frame is provided with a connecting rod hole; the fixed joint components are arranged in the fixed frame in a linear array mode through the connecting rod components, and the fixed joint components are connected with the fixed frame through the adjusting components; the fixing joint component comprises a plurality of fixing joints which are arranged in a circular annular array by taking the center of the fixing frame as the center, and each fixing joint comprises a body center top frame, a body bone surface fixer and a supporter; the adjusting assembly is used for adjusting the rod A assembly and the rod B assembly, the fixing frame, the adjusting assembly and the fixing section are matched, under the condition of ensuring minimally invasive, the skeleton can be fixed and corrected, the wound surface of a human body is small because only four fixing cables are used on one surface, and meanwhile, the fixing section made of elastic materials can ensure the comfort level during fixing.

Description

A postoperative bone corrector

technical field

The invention relates to a postoperative bone corrector, which relates to a fixator for the postoperative bone sole by cooperating with a cable and a fixation joint.

Background technique

In the process of orthopedic treatment such as fractures, various brackets are often used to penetrate the skin surface after surgery, and the bones are fixed to correct and restore them. After recovery, the brackets are removed through trauma surgery. The whole process requires multiple procedures. This operation will cause relatively large trauma to the human muscle and epidermis, and the postoperative recovery period will be relatively long. At the same time, the traditional bracket will cause relatively large compression and trauma to the bone;

In this regard, on the market now, many orthopedic fixators that can reduce the degree of trauma during surgery and reduce the number of operations to a certain extent, and can accelerate healing at the same time, such as the invention of ZL201120537796.6, which proposes a method for The steel wire wrapped around the bone part, this kind of steel wire reduces the damage to the bone and reduces the chance of bone ischemia and necrosis by setting a protective sheath of absorbable material on the surface of the steel wire. After the bone recovers, the skin and muscle trauma caused by the steel wire removal operation is still very large, and it takes a long time to recover;

Another example is the invention patent of ZL201420132756.7 titled a patella external fixator, which also proposes a minimally invasive bone external fixator. This structure is more similar to the commonly used steel nail-fixed structure. The main purpose is to achieve multi-directional bone fixation. At the same time, the trauma caused by the thin steel nails to the human body is relatively small, which can avoid the injury and infection caused by the second removal operation to the human body. However, in its technical plan, the steel nails The main support function, in order to ensure a certain support performance (ie, bending strength), the steel nail itself cannot be made as thin as acupuncture needles, so the reduction of the degree of trauma to the human epidermis and muscles by the steel nail is still relatively limited. Moreover, due to its volume and special biological properties, if the steel nail itself is made of titanium alloy and other materials, the processing difficulty and cost are relatively high. If it is made of some polymers with better biological properties, its strength cannot be guaranteed. At the same time, the main support of the invention is an annular metal plate, which will block the limbs to be operated during installation, making installation more difficult, and accurate installation under X-rays cannot be realized;

Therefore, in summary, there are still many deficiencies in the external bone fixation devices in the prior art, for example: trauma caused by installation, secondary removal surgery trauma, cost cannot be reduced, and installation is difficult.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the technical problems of large trauma and complicated fixation operation in the prior art, and provide an orthopedic fixation bracket with less trauma to the installer and less or even no need for secondary surgery.

The technical solution adopted by the present invention to solve its technical problems is:

A postoperative bone corrector, comprising a fixed frame, an adjustment assembly, a connecting rod assembly and a fixation joint assembly;

The fixed section assembly is arranged in a linear array in the fixed frame through the connecting rod assembly, and the fixed section assembly is connected to the fixed frame through an adjustment assembly;

The fixed frame is ring-shaped, and the fixed section assembly includes several fixed sections arranged in a circular array at the center of the fixed frame. The fixed section includes a body center top frame and a supporter, and the supporter includes an arc-shaped unfolded surface. A hollow groove perpendicular to the longitudinal axis of the unfolded surface is provided on both sides of the arc-shaped unfolded surface, a fixed rod is arranged in the hollowed groove, a fixed block is arranged on the fixed rod, and a fixed block is arranged between the fixed blocks. fixed cable;

The middle part of the support is provided with a column, and the column is provided with a body-centered top frame, and the body-centered top frame includes an arc-shaped support surface coaxial with the unfolded surface of the support;

A support frame for fixing the spine is enclosed between the fixed cables between the fixed blocks and the arc-shaped support surface;

The connecting rod assembly includes several connecting rods corresponding to the fixed joints, and a mounting hole parallel to the axis of the arc-shaped support surface is provided in the column of the supporter, and all the fixed frames are located between the fixed joints on the same straight line Connected together by connecting rods installed in the mounting holes;

The adjustment assembly includes an adjustment rod A assembly and an adjustment rod B assembly. The adjustment rod A assembly includes an adjustment screw A fixed on the back of the arc-shaped development surface of the support. One end of the adjustment screw A is connected to the arc-shaped development surface of the support. The back is rotated and connected, and the other end of the adjusting screw A is threaded with the fixed frame;

The adjusting rod B assembly includes several adjusting screw rods B arranged between the fixed joints, and one end of the adjusting screw rod B is rotatably connected with a pressing block with a semicircular cross section, and the pressing block is connected with two adjacent fixed joints. The arc-shaped unfolded surface of the joint is in contact with the back, and the other end of the adjusting screw B is threadedly connected with the fixed frame.

As a further innovation of the present invention, the body center top frame is made of elastic material.

As a further innovation of the present invention, the fixing block includes a fixing hole for fixing the cable, and a locking screw A is provided on the side wall of the fixing hole.

As a further innovation of the present invention, the fixing block includes a sliding hole for socketing with the fixing frame, and a locking screw B is provided on the side wall of the sliding hole.

As a further innovation of the present invention, the fixing cable includes a tension wire, and the material of the tension wire is biocompatible.

As a further innovation of the present invention, the tension wire is made of aliphatic polyester.

As a further innovation of the present invention, a strengthened metal cable is provided in the middle of the tension wire, and the material of the strengthened metal cable is biocompatible.

As a further innovation of the present invention, the reinforced metal cable is made of titanium alloy.

As a further innovation of the present invention, the connecting rod is made of aluminum alloy.

The beneficial effects of the present invention are:

1. The present invention adopts the cooperation of the fixed frame, the adjustment component and the fixed section, and can fix and correct the bones under the condition of ensuring minimal invasiveness. Because only four fixed cables are used on one side, it is less traumatic to the human body. Small, at the same time, the fixed joint made of elastic material can not only ensure the comfort of the fixation, but also provide a certain margin for the expansion caused by muscle contraction and relaxation, because the low elasticity of the arc-shaped support surface can not only ensure the fixation of the bone, but also It can also prevent the excessive compression of the tension wire on the surface of the bone, resulting in osteonecrosis; the compression block of the present invention can adjust the elasticity of the arc-shaped expansion surface of each fixation segment;

At the same time, the present invention can also be used for postoperative fixation of fractures, and the fixation frame can also provide good protection performance, and the installation operation of the present invention is relatively simple.

2. The tension wire of the present invention is fixed by clamping. This structure can improve the convenience of installation, and at the same time, the tension wire can also be installed with a higher pre-tightening force.

3. The fixed block and the fixed frame of the present invention are fixed by sliding, and the position between the fixed blocks can be adjusted more conveniently, so that the fixed position of the tension wire can be adjusted conveniently according to the specific bone condition, which greatly increases the pan usability.

4. The tension thread made of biocompatible aliphatic polyester material, because of its low bio-repellency, can stay in the body after recovery, which can reduce the trauma of the second removal operation. If the bone If the degree of damage itself is not large, it is not necessary to perform a second removal operation.

1. In the tightening cable of the present invention, a strengthening cable made of titanium alloy is also added to prevent the tensioning wire from breaking due to excessive tension. After recovery, the strengthening cable of titanium alloy can be directly pulled out, and some There will not be too much rejection problem if it stays in the body.

. The connecting rod of the present invention is made of aluminum alloy with strong plasticity, which can be adjusted accordingly according to the specific point of the patient's spine shape, so as to improve the applicability of the present invention.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the schematic diagram of using state 1 of the present invention;

Fig. 2 is the schematic diagram of using state 2 of the present invention;

Fig. 3 is the sectional schematic diagram of this fixing section;

Fig. 4 is a transverse sectional view of a fixed block;

In the figure: 1. Fixed block; 2. Adjusting screw A; 3. Adjusting adjusting screw B; 4. Compression block; Center top frame; 10, fixed cable; 11, skeleton; 12, fixed frame;

1-1, fixing hole; 1-2, sliding hole.

detailed description

The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

Example 1

Specifically as shown in Figure 1, Figure 3 and Figure 4, this product mainly includes a fixed frame, an adjustment component, a connecting rod component and a fixed joint component;

A postoperative bone 11 corrector, comprising a fixed frame 12, an adjustment assembly, a connecting rod 8 assembly and a fixation joint assembly;

The fixed section assembly is arranged in a linear array in the fixed frame 12 through the connecting rod 8 assembly, and the fixed section assembly and the fixed frame 12 are connected through an adjustment assembly;

The fixation frame 12 is ring-shaped, and the fixation segment assembly includes several fixation segments arranged in a circular array at the center of the fixation frame 12. The fixation segment includes a body center top frame 9, a bone surface fixer in the body, and a supporter. The supporter includes an arc-shaped expansion On the surface, a hollow groove perpendicular to the longitudinal axis of the unfolded surface is provided on both sides of the arc-shaped unfolded surface. A fixed rod 6 is arranged in the hollowed groove, and a fixed block 1 is arranged on the fixed rod 6. Between the fixed block 1 A fixed cable 10 is arranged between them;

The middle part of the supporter is provided with a column 7, and the column 7 is provided with a body center top frame 9, and the body center top frame 9 includes an arc-shaped support surface coaxial with the unfolded surface of the supporter;

A support frame for fixing the spine is formed between the fixed cables 10 between the fixed blocks 1 and the arc-shaped support surface;

The connecting rod 8 assembly includes several connecting rods 8 corresponding to the fixed joints. A mounting hole parallel to the axis of the arc-shaped support surface is provided in the column 7 of the support. The fixed joints on the same linear array are installed in the mounting holes The connecting rods 8 are connected together;

Adjusting components Adjusting rod A assembly and adjusting rod B assembly, the adjusting rod A assembly includes an adjusting screw A2 fixed on the back of the arc-shaped development surface 5 of the supporter, and one end of the adjustment screw A2 is rotationally connected with the back of the arc-shaped expansion surface 5 of the supporter. The other end of the screw rod A2 is threadedly connected with the fixed frame 12;

The adjusting rod B assembly includes a number of adjusting screw rods B3 arranged between the fixed sections, and one end of the adjusting screw rod B3 is rotatably connected with a compression block 4 with a semicircular cross section, and the compression block 4 is connected to two adjacent fixed sections. The arc-shaped unfolding surface 5 is in contact with the back, and the other end of the adjusting screw B3 is threadedly connected with the fixed frame 12;

Wherein the fixed block 1 includes a sliding hole 1-2 for connecting the fixed block 1 to the fixed rod 62, a locking screw B is arranged on the inner wall of the sliding hole 1-2, and the fixed block 1 is also provided with A fixing hole 1-1 for passing through the fixing cable 103, and a locking screw A for fixing the fixing cable 103 is also provided on the side wall of the fixing hole 1-1;

Wherein the fixed cable 10 comprises a tension wire made of a biocompatible aliphatic polyester material, and in the middle of the tension wire, a reinforced metal wire made of a titanium alloy that is also a biocompatible material is arranged;

The tension thread made of biocompatible aliphatic polyester material, because of its low bio-repellency, can stay in the body after recovery, which can reduce the degree of trauma of the second removal operation. If the bone 11 itself If the degree of damage is not large, the second demolition operation may not be performed;

The reinforced cable made of titanium alloy is used to prevent the tension wire from breaking due to excessive tension. After recovery, the reinforced cable made of titanium alloy can be pulled out directly, and part of it remains in the body without too much rejection. ;

When used for bone correction, as shown in Figure 1, the fixed section assembly is first connected and installed on the human arm through the connecting rod assembly, and then the octagonal fixed frame 12 is sleeved on the fixed section assembly, each fixed section assembly It includes 4 fixed sections. After the fixed frame 12 is inserted into the fixed section assembly, the adjustment screw A is pressed against the back of the fixed section, and the adjustment screw B is pressed between the two adjacent fixed sections through the pressing block, and at the same time Through the fixed cable, a fixed cable is fixed between the two fixed blocks on each fixed section, through the cooperation of the fixed cable and the center top frame, the bone 11 is fixed in a single direction on the relative plane, and then the adjustment screw is rotated A and the adjustment screw B can change the tension force of each fixation joint assembly on the bone in various directions, thereby realizing the adjustment of the bone.

Example 2

As shown in Figure 4, the present invention can also be used to fix arms and legs in an emergency state;

Mainly as shown in Fig. 1, Fig. 2 and Fig. 3, a postoperative bone 11 corrector includes a fixed frame 12, an adjustment component, a connecting rod 8 component and a fixed joint component;

The fixed section assembly is arranged in a linear array in the fixed frame 12 through the connecting rod 8 assembly, and the fixed section assembly and the fixed frame 12 are connected through an adjustment assembly;

The fixation frame 12 is ring-shaped, and the fixation segment assembly includes several fixation segments arranged in a circular array at the center of the fixation frame 12. The fixation segment includes a body center top frame 9, a bone surface fixer in the body, and a supporter. The supporter includes an arc-shaped expansion On the surface, a hollow groove perpendicular to the longitudinal axis of the unfolded surface is provided on both sides of the arc-shaped unfolded surface. A fixed rod 6 is arranged in the hollowed groove, and a fixed block 1 is arranged on the fixed rod 6. Between the fixed block 1 A fixed cable 10 is arranged between them;

The middle part of the supporter is provided with a column 7, and the column 7 is provided with a body center top frame 9, and the body center top frame 9 includes an arc-shaped support surface coaxial with the unfolded surface of the supporter;

A support frame for fixing the spine is formed between the fixed cables 10 between the fixed blocks 1 and the arc-shaped support surface;

The connecting rod 8 assembly includes several connecting rods 8 corresponding to the fixed joints. A mounting hole parallel to the axis of the arc-shaped support surface is provided in the column 7 of the support. The fixed joints on the same linear array are installed in the mounting holes The connecting rods 8 are connected together;

Adjusting components Adjusting rod A assembly and adjusting rod B assembly, the adjusting rod A assembly includes an adjusting screw A2 fixed on the back of the arc-shaped development surface 5 of the supporter, and one end of the adjustment screw A2 is rotationally connected with the back of the arc-shaped expansion surface 5 of the supporter. The other end of the screw rod A2 is threadedly connected with the fixed frame 12;

The adjusting rod B assembly includes a number of adjusting screw rods B3 arranged between the fixed sections, and one end of the adjusting screw rod B3 is rotatably connected with a compression block 4 with a semicircular cross section, and the compression block 4 is connected to two adjacent fixed sections. The arc-shaped unfolding surface 5 is in contact with the back, and the other end of the adjusting screw B3 is threadedly connected with the fixed frame 12;

Wherein the fixed block 1 includes a sliding hole 1-2 for connecting the fixed block 1 to the fixed rod 62, a locking screw B is arranged on the inner wall of the sliding hole 1-2, and the fixed block 1 is also provided with A fixing hole 1-1 for passing through the fixing cable 103, and a locking screw A for fixing the fixing cable 103 is also provided on the side wall of the fixing hole 1-1;

Wherein the fixed cable 10 comprises a tension wire made of a biocompatible aliphatic polyester material, and in the middle of the tension wire, a reinforced metal wire made of a titanium alloy that is also a biocompatible material is arranged;

The tension thread made of biocompatible aliphatic polyester material, because of its low bio-repellency, can stay in the body after recovery, which can reduce the degree of trauma of the second removal operation. If the bone 11 itself If the degree of damage is not large, the second demolition operation may not be performed;

The reinforced cable made of titanium alloy is used to prevent the tension wire from breaking due to excessive tension. After recovery, the reinforced cable made of titanium alloy can be pulled out directly, and part of it remains in the body without too much rejection. ;

When used for bone fixation, as shown in Figure 2, the fixed section assembly is first connected and installed on the human arm through the connecting rod assembly, and then the octagonal fixed frame 12 is sleeved on the fixed section assembly, each fixed section assembly It includes 4 fixed sections. After the fixed frame 12 is inserted into the fixed section assembly, the adjustment screw A is pressed against the back of the fixed section, and the adjustment screw B is pressed between the two adjacent fixed sections through the pressing block, and at the same time Through the fixed cables, the fixed cables on the fixed blocks on each fixed street are cross-connected as shown in Figure 2 to form several fixed frames for fixing the bones. Through the cooperation of the fixed cables and the center top frame, two-way fixation , and then rotate the adjusting screw A and adjusting screw B to change the compressive force of each fixation joint assembly on the bone in all directions, thereby realizing the adjustment of the bone shape. During the recovery process, it can also be adjusted according to the specific bone recovery condition , real-time correction of the bone shape by rotating the adjusting screw A and adjusting screw B;

Inspired by the above-mentioned ideal embodiment according to the present invention, through the above-mentioned description content, relevant workers can make various changes and modifications within the scope of not departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, but must be determined according to the scope of the claims.

Claims (9)

1. A postoperative bone corrector is characterized in that: it comprises a fixed frame, an adjustment assembly, a connecting rod assembly and a fixed joint assembly; The fixed section assembly is arranged in a linear array in the fixed frame through the connecting rod assembly, and the fixed section assembly is connected to the fixed frame through an adjustment assembly; The fixed frame is ring-shaped, and the fixed section assembly includes several fixed sections arranged in a circular array at the center of the fixed frame. The fixed section includes a body center top frame and a supporter, and the supporter includes an arc-shaped unfolded surface. A hollow groove perpendicular to the longitudinal axis of the unfolded surface is provided on both sides of the arc-shaped unfolded surface, a fixed rod is arranged in the hollowed groove, a fixed block is arranged on the fixed rod, and a fixed block is arranged between the fixed blocks. fixed cable; The middle part of the support is provided with a column, and the column is provided with a body-centered top frame, and the body-centered top frame includes an arc-shaped support surface coaxial with the unfolded surface of the support; A support frame for fixing the spine is enclosed between the fixed cables between the fixed blocks and the arc-shaped support surface; The connecting rod assembly includes several connecting rods corresponding to the fixed joints, and a mounting hole parallel to the axis of the arc-shaped support surface is provided in the column of the supporter, and all the fixed frames are located between the fixed joints on the same straight line Connected together by connecting rods installed in the mounting holes; The adjustment assembly includes an adjustment rod A assembly and an adjustment rod B assembly. The adjustment rod A assembly includes an adjustment screw A fixed on the back of the arc-shaped development surface of the support. One end of the adjustment screw A is connected to the arc-shaped development surface of the support. The back is rotated and connected, and the other end of the adjusting screw A is threaded with the fixed frame; The adjusting rod B assembly includes several adjusting screw rods B arranged between the fixed joints, and one end of the adjusting screw rod B is rotatably connected with a pressing block with a semicircular cross section, and the pressing block is connected with two adjacent fixed joints. The arc-shaped unfolded surface of the joint is in contact with the back, and the other end of the adjusting screw B is threadedly connected with the fixed frame. 2. A postoperative bone corrector according to claim 1, wherein the body center top frame is made of elastic material. 3. A postoperative bone corrector as claimed in claim 1, characterized in that: said fixing block includes a fixing hole for fixing cables, and locking screws are arranged on the side wall of said fixing hole a. 4. A postoperative bone corrector as claimed in claim 1, characterized in that: said fixing block comprises a sliding hole for socketing with the fixing frame, the side wall of said sliding hole is provided with a locking screw B. 5 . The postoperative bone correction device according to claim 1 , characterized in that: the fixing cable includes a tension wire, and the material of the tension wire is biocompatible. 6 . 6. A postoperative bone corrector according to claim 5, characterized in that: said tension wire is made of aliphatic polyester. 7. The postoperative bone corrector according to claim 5, wherein a reinforced metal cable is arranged in the middle of the tension wire, and the material of the reinforced metal cable is biocompatible. 8. A postoperative bone corrector according to claim 7, characterized in that: said reinforced metal cable is made of titanium alloy. 9. A postoperative bone corrector according to claim 1, characterized in that: said connecting rod is made of aluminum alloy.