阅读说明：本技术 一种长干骨锁定钢板牵伸外固定器及使用方法 (Long-dry-bone locking steel plate stretching external fixator and use method thereof ) 是由 王伟 于 2020-11-27 设计创作，主要内容包括：本发明公开了一种长干骨锁定钢板牵伸外固定器及使用方法,外固定器包括内环槽钢板、外牵伸支架、夹针牵伸座、牵伸杆和骨针,所述内环槽钢板固定连接在长干骨上,位于体内,所述外牵伸支架通过连接杆连接在内环槽钢板上,位于体外,所述夹针牵伸座设在外牵伸支架上,并沿其长度方向滑移运动,所述牵伸杆平行于外牵伸支架设置,其两端分别连接在外牵伸支架和夹针牵伸座上,所述骨针设在夹针牵伸座上。本发明的夹针牵伸座可以双向连接在外牵伸支架上,实现双向滑移,应用范围广；通过调整调节栓使牵伸杆带动夹针牵伸座向外运动,进而以固定速度牵伸骨块向远端滑移,控制简单稳定,手术成功效率高。(The invention discloses a drafted external fixator of a long dry bone locking steel plate and a use method thereof. The needle clamping drafting seat can be connected to the outer drafting frame in two directions, so that two-way sliding is realized, and the application range is wide; the adjusting bolt is adjusted to enable the traction rod to drive the needle clamping traction seat to move outwards, so that the bone blocks are drawn at a fixed speed to slide towards the far end, the control is simple and stable, and the operation success efficiency is high.)

1. A drafted external fixator for a long dry bone locking steel plate is characterized by comprising an inner annular groove steel plate (1), an outer drafted support (2), a needle clamping drafted seat (3), a drafted rod (4) and spicules (5), wherein the inner annular groove steel plate (1) is fixedly connected to a long dry bone and is positioned in a body, the outer drafted support (2) is connected to the inner annular groove steel plate (1) through a connecting rod (6) and is positioned in the body, the needle clamping drafted seat (3) is arranged on the outer drafted support (2) and slides along the length direction of the outer drafted support, the drafted rod (4) is arranged in parallel to the outer drafted support (2), two ends of the rod are respectively connected to the outer drafted support (2) and the needle clamping drafted seat (3), and the spicules (5) are;

an annular groove (11) which is communicated up and down is formed in the middle of the inner annular groove steel plate (1), and the annular groove (11) is located below the needle clamping drafting seat (3); the upper end part of the spicule (5) is fixed on the spicule drawing seat (3), and the lower end part of the spicule passes through the annular groove (11) to be connected with the bone block.

2. The long-stem locking steel plate stretching external fixator of claim 1, wherein: the drafting rod (4) comprises a rod body (41) and fixed supports (42), wherein the fixed supports (42) are arranged at two ends of the rod body (41) and are respectively fixedly connected with the outer drafting bracket (2) and the needle clamping drafting seat (3); the outer end of the traction rod (4) is provided with an adjusting bolt (43), and the adjusting bolt (43) is arranged on the rod body (41) and is in contact with the fixed support (42).

3. The long-stem locking steel plate stretching external fixator of claim 1, wherein: a strip-shaped groove which is through up and down is formed in the middle of the outer drafting support (2), and the needle clamping drafting seat (3) is positioned in the strip-shaped groove; the side is equipped with the spout on the left and right sides in bar groove, be equipped with the slider on the side about pressing from both sides needle draft seat (3), the slider is located the spout.

4. The long-bone-locking steel-plate extension external fixator of claim 3, wherein: the strip-shaped groove is arranged along the length direction of the outer drafting support (2) and is parallel to the outer drafting support (2), and the sliding groove and the sliding block are arranged in parallel to the strip-shaped groove.

5. The long-stem locking steel plate stretching external fixator of claim 2, wherein: the end part of the outer drafting support (2) is provided with a connecting support (21), the top surface of the connecting support (21) is provided with a first connecting hole, the two ends of the top surface of the needle clamping drafting seat (3) are provided with a second connecting hole, and the fixing supports (42) at the two ends of the rod body (41) are respectively fixedly connected in the first connecting hole and the second connecting hole.

6. The long-stem locking steel plate stretching external fixator of claim 1, wherein: the inner annular groove steel plate (1) is fixedly connected to the long skeleton through a locking screw (7), a limiting section is arranged in the middle of the locking screw (7), and the limiting section is located below the inner annular groove steel plate (1).

7. The long-stem locking steel plate stretching external fixator of claim 1, wherein: the needle clamping drafting seat (3) is provided with vertically through mounting holes at intervals, and the upper end of the spicule (5) is arranged in the mounting holes; the side surface of the needle clamping drafting seat (3) is provided with a locking hole corresponding to the mounting hole, a locking bolt is arranged in the locking hole, and the inner end of the locking bolt is in contact with the spicule (5).

8. The long-stem locking steel plate stretching external fixator of claim 1, wherein: the inner ring groove steel plate (1) and the outer drafting bracket (2) are both provided with connecting holes, and two ends of the connecting rod (6) are respectively arranged in the connecting holes.

9. The use method of the long-stem bone locking steel plate stretching external fixator according to any one of claims 1-8 is characterized by comprising the following steps:

s1, implanting an inner ring groove steel plate (1): fixing an inner annular groove steel plate (1) on a long dry bone by using a locking screw (7), wherein an annular groove (11) is positioned in the middle of the long dry bone, then cutting off bone blocks at an infected section, and suturing a wound after flushing;

s2, installing the outer drafting frame (2): cutting the skin at the connecting hole on the inner ring groove steel plate (1), fixing the inner end of the connecting rod (6) on the inner ring groove steel plate (1), and fixing the outer drafting bracket (2) pre-provided with the needle clamping drafting seat (3) at the top end of the connecting rod (6) to complete the installation of the outer drafting bracket (2);

s3, installing spicules (5): two spicules (5) penetrate through mounting holes in the spicule clamping traction seat (3), the inner ends of the spicules (5) are fixedly connected with a fixed bone block to be slipped, then the spicules (5) are fixed, and then the fixed bone block is transversely cut into a slipped bone block;

s4, installing a traction rod (4): the traction rod (4) is preset to the length corresponding to the osteotomy, and then the fixed support (42) at the end part of the traction rod is fixedly connected with the outer traction bracket (2) and the needle clamping traction seat (3) to complete the installation;

s5, prestress draft: after the drafting rod (4) is installed, adjusting a regulating bolt (43) at the outer end of the drafting rod (4) to shorten the length of the drafting rod and drive the needle clamping drafting seat (3) to move outwards;

s6, conveyance adjustment: adjusting the adjusting bolt (43) to enable the traction rod (4) to drive the needle clamping traction seat (3) to move, and further to draw the sliding bone block to slide towards the far end at a fixed speed until the sliding bone block slides to the far end position and is healed with the far end section end bone;

s7, removing the outer drafting frame (2): after the bone blocks are healed, the external traction bracket (2) is firstly removed, and the inner ring groove steel plate (1) is continuously kept until the bone blocks are calcified and strong.

Technical Field

The invention relates to the technical field of medical tools, in particular to a long-stem bone locking steel plate stretching external fixator and a use method thereof.

Background

The external fixing bracket is used for treating bone defects and osteomyelitis starting from the last 60 years, and through the continuous development of half a century, the external fixing bracket becomes an ideal and effective treatment scheme for treating various orthopedic diseases, the clinical yield of more than 10 years is more than 90%, the external fixing bracket is known as an important milestone in the orthopedic development history of the twentieth century, the external fixing bracket can remarkably relieve or eliminate symptoms of osteonecrosis, comminuted fracture dislocation, irreplaceable persons, pain and movement disorder osteoarthropathy, stiff or difficult-to-move rheumatoid arthritis and the like, the joint movement range can be improved to a certain extent, and the appearance of deformed limbs can be obviously improved. The external fixing bracket also has good effects on diseases such as osteomyelitis, bone defect, limb shortening, orthopedic reduction and the like, but has higher requirements on application. The traditional treatment of osteomyelitis still achieves the purpose of treatment by sliding the bone blocks through the external fixing support, but the existing external fixing support has the defects that the infection is easy to occur in the treatment process, the traction rate cannot be effectively controlled, the sliding direction is difficult to control, the bidirectional sliding cannot be realized, and the difficulty in learning of doctors is high. The invention provides a long-stem locking steel plate stretching external fixator and a using method thereof, which solve the problems.

Disclosure of Invention

The invention provides a long dry bone locking steel plate stretching external fixator and a use method thereof, which have the advantages of few exposed parts, small influence, convenience in installation and low learning difficulty.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a drafted external fixator for a long dry bone locking steel plate comprises an inner ring groove steel plate, an outer drafted support, a needle clamping drafted seat, a drafted rod and a spicule, wherein the inner ring groove steel plate is fixedly connected to a long dry bone and located in a body, the outer drafted support is connected to the inner ring groove steel plate through a connecting rod and located in the body, the needle clamping drafted seat is arranged on the outer drafted support and slides along the length direction of the needle clamping drafted seat, the drafted rod is arranged in parallel with the outer drafted support, two ends of the drafted rod are respectively connected to the outer drafted support and the needle clamping drafted;

the middle part of the inner ring groove steel plate is provided with an annular groove which is communicated up and down, and the annular groove is positioned below the needle clamping drafting seat; the upper end part of the spicule is fixed on the spicule drafting seat, and the lower end part of the spicule penetrates through the annular groove to be connected with the bone block.

Furthermore, the drafting rod comprises a rod body and fixed supports, wherein the fixed supports are arranged at two ends of the rod body and are respectively and fixedly connected with the outer drafting bracket and the needle clamping drafting seat; the outer end of the traction rod is provided with an adjusting bolt which is arranged on the rod body and is contacted with the fixed support.

Furthermore, a strip-shaped groove which is through up and down is formed in the middle of the outer drafting bracket, and the needle clamping drafting seat is positioned in the strip-shaped groove; the side is equipped with the spout on the left and right sides in bar groove, be equipped with the slider on the side about pressing from both sides the needle draft seat, the slider is located the spout.

Further, the strip-shaped groove is arranged along the length direction of the outer drafting support and is parallel to the outer drafting support, and the sliding groove and the sliding block are arranged in parallel to the strip-shaped groove.

Furthermore, the end part of the outer drafting frame is provided with a connecting support, the top surface of the connecting support is provided with a first connecting hole, the two ends of the top surface of the needle clamping drafting frame are provided with a second connecting hole, and the fixing supports at the two ends of the rod body are respectively and fixedly connected in the first connecting hole and the second connecting hole.

Furthermore, the inner ring groove steel plate is fixedly connected to the long skeleton through a locking screw, a limiting section is arranged in the middle of the locking screw, and the limiting section is located below the inner ring groove steel plate.

Furthermore, the needle clamping drafting seat is provided with vertically through mounting holes at intervals, and the upper end part of the spicule is arranged in the mounting holes; the side surface of the needle clamping drawing seat is provided with a locking hole corresponding to the mounting hole, a locking bolt is arranged in the locking hole, and the inner end of the locking bolt is in contact with the spicule.

Furthermore, the inner ring groove steel plate and the outer drafting frame are both provided with connecting holes, and two ends of the connecting rod are respectively arranged in the connecting holes.

The use method of the long-stem bone locking steel plate stretching external fixator comprises the following steps:

s1, implanting an inner ring groove steel plate: fixing an inner annular groove steel plate on the long dry bone by using a locking screw, wherein the annular groove is positioned in the middle of the long dry bone, cutting off bone blocks at an infected section, and suturing a wound after flushing;

s2, installing an outer drafting frame: cutting the skin at the connecting hole on the inner ring groove steel plate, fixing the inner end of the connecting rod on the inner ring groove steel plate, and fixing the outer drafting bracket pre-provided with the needle clamping drafting seat at the top end of the connecting rod to finish the installation of the outer drafting bracket;

s3, installing bone pins: two spicules penetrate through a mounting hole on the spicule drawing seat, the inner ends of the spicules are fixedly connected with a fixed bone block to be slipped, then the spicules are fixed, and then the fixed bone block is transversely cut into a slipping bone block;

s4, installing a traction rod: presetting the length of the drafting rod to be corresponding to the length of the osteotomy, and then fixedly connecting the fixed support at the end part of the drafting rod with the outer drafting bracket and the needle clamping drafting seat to finish the installation;

s5, prestress draft: after the drafting rod is installed, adjusting a regulating bolt at the outer end of the drafting rod to shorten the length of the drafting rod and drive the needle clamping drafting seat to move outwards;

s6, conveyance adjustment: adjusting the adjusting bolt to enable the traction rod to drive the clamping needle traction seat to move, and further drawing the bone blocks to slide towards the far end at a fixed speed until the bone blocks slide to the far end position and are healed with the bones at the far end section;

s7, removing the outer drafting frame: after the bone blocks are healed, the external traction bracket is firstly removed, and the inner ring groove steel plate is continuously kept until the bone blocks are calcified and hard.

The invention has the following beneficial effects:

the needle clamping drafting seat can be connected to the outer drafting frame in two directions, so that two-way sliding is realized, and the application range is wide; the adjusting bolt is adjusted to enable the traction rod to drive the needle clamping traction seat to move outwards, so that the bone blocks are drawn at a fixed speed to slide towards the far end, the control is simple and stable, and the successful efficiency of the operation is high; the exposed part is small, so that the inconvenience of the patient in life is greatly reduced, the size of the wound is small, and the infection risk is reduced; the fixing effect with long dry bones and bone blocks is good, the influence on the blood circulation of the bone blocks is small, and the operation effect is good; the installation mode is simple, and the study curve is short, and it is low to master the first hand degree of difficulty, can effectively reduce the study cost, promotes the application efficiency.

Drawings

FIG. 1 is a schematic view of the present invention in use;

FIG. 2 is a side view of the present invention in use;

FIG. 3 is a schematic view of the overall structure of the present invention;

FIG. 4 is a front side view of an inner race plate of the present invention;

FIG. 5 is a rear side view of the inner race plate of the present invention;

FIG. 6 is a schematic view of the structure of the external drafting frame of the present invention;

FIG. 7 is a schematic view of the locking screw of the present invention;

fig. 8 is a side view of the locking screw of the present invention.

Reference numerals: 1-inner ring groove steel plate, 11-ring groove, 2-outer drafting bracket, 21-connecting support, 3-needle clamping drafting seat, 4-drafting rod, 41-rod body, 42-fixed support, 43-adjusting bolt, 5-spicule, 6-connecting rod and 7-locking screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the specification, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

As shown in fig. 1, 2 and 3, an external fixator for locking a long dry bone by steel plate traction comprises an inner annular groove steel plate 1, an outer traction support 2, a needle clamping traction seat 3, a traction rod 4 and spicules 5, wherein the inner annular groove steel plate 1 is fixedly connected to the long dry bone and is located in the body, the outer traction support 2 is connected to the inner annular groove steel plate 1 through a connecting rod 6 and is located outside the body, the needle clamping traction seat 3 is arranged on the outer traction support 2 and slides along the length direction of the outer traction support, the traction rod 4 is parallel to the outer traction support 2, two ends of the traction rod are respectively connected to the outer traction support 2 and the needle clamping traction seat 3, and the spicules 5 are arranged on the needle clamping traction seat 3.

As shown in fig. 4 and 5, an annular groove 11 which is through from top to bottom is formed in the middle of the inner annular groove steel plate 1, and the annular groove 11 is located below the needle clamping drafting base 3; the upper end of the spicule 5 is fixed on the spicule drawing seat 3, and the lower end of the spicule passes through the annular groove 11 to be connected with the bone block. The annular groove 11 is used for yielding the bone needle 5 and can limit the running track of the bone needle 5.

As shown in fig. 1, the principle of use of the present invention is as follows: inner ring groove steel sheet 1 passes through locking screw 7 fixed connection on long dry bone, is located internally, and outer draft support 2 passes through connecting rod 6 to be connected on inner ring groove steel sheet 1, is located extracorporeally, and the bone piece is together fixed on pressing from both sides needle draft seat 3 along with spicule 5, presss from both sides needle draft seat 3 swing joint on outer draft support 2 to be connected with draft pole 4. When the external drafting rod 4 moves through the adjusting bolt 43, the needle clamping drafting seat 3 is driven to move along the external drafting bracket 2 outside the body, the spicules 5 are driven to move together, and then the bone blocks positioned at the inner ends of the spicules 5 are driven to move slowly, so that the growth of bones is realized, and the operation requirement is met.

As shown in fig. 3, in the embodiment of the present invention, both ends of the inner circular steel plate 1 are fixed to both ends of the long bone through 3-5 locking screws 7, then the outer stretching bracket 2 is fixed to the inner circular steel plate 1 through two connecting rods 6 at both ends thereof, two spicules 5 are arranged on the needle clamping stretching seat 3, and the distance between the two spicules 5 is as large as possible according to the length of the sliding bone.

As shown in fig. 3 and 6, further, the draft rod 4 includes a rod body 41 and fixed supports 42, the fixed supports 42 are disposed at two ends of the rod body 41 and are respectively fixedly connected to the outer draft support 2 and the needle clamping draft base 3; the outer end of the traction rod 4 is provided with an adjusting bolt 43, and the adjusting bolt 43 is arranged on the rod body 41 and is in contact with the fixed support 42.

Under the condition that the fixed support 42 is fixed and indefinite, the rotation of the adjusting bolt 43 forces the rod 41 and the fixed support 42 to move relatively, so as to realize the movement of the rod 41 and further drive the needle clamping drafting base 3 to move.

Preferably, the adjusting bolt 43 is a hexagon bolt, and the adjusting bolt 43 rotates one circle and moves 1mm axially.

As shown in fig. 6, further, a strip-shaped groove which is through from top to bottom is formed in the middle of the outer drafting frame 2, and the needle clamping drafting base 3 is located in the strip-shaped groove; the side is equipped with the spout on the left and right sides in bar groove, be equipped with the slider on the side about pressing from both sides needle draft seat 3, the slider is located the spout. The setting of bar groove, spout and slider is used for guaranteeing that clamp needle draft seat 3 slides according to the movement track of design, and skew about the disappearance reaches from top to bottom, effectively guarantees bone piece draft effect.

Further, the bar groove sets up along 2 length direction of outer draft support to be parallel with outer draft support 2, spout and slider are on a parallel with the bar groove setting.

As shown in fig. 6, further, a connecting support 21 is disposed at an end of the outer drafting frame 2, a first connecting hole is disposed on a top surface of the connecting support 21, a second connecting hole is disposed at two ends of a top surface of the needle clamping drafting frame 3, and the fixing supports 42 at two ends of the rod 41 are respectively and fixedly connected to the first connecting hole and the second connecting hole.

Preferably, the two connecting supports 21 are respectively arranged at two ends of the outer drafting frame 2, and the outer end of the rod body 41 is connected to different connecting supports 21 to realize forward or reverse sliding.

As shown in fig. 7 and 8, further, the inner circular groove steel plate 1 is fixedly connected to the long shaft bone through a locking screw 7, and a limiting section is arranged in the middle of the locking screw 7 and is located below the inner circular groove steel plate 1. And a limiting section is arranged for ensuring that the inner annular groove steel plate 1 keeps a corresponding distance from the long bone.

As shown in fig. 2 and 6, the needle clamping drafting base 3 is further provided with vertically through mounting holes at intervals, and the upper end portions of the spicules 5 are arranged in the mounting holes; the side surface of the needle clamping drafting seat 3 is provided with a locking hole corresponding to the mounting hole, a locking bolt is arranged in the locking hole, and the inner end of the locking bolt is in contact with the spicule 5. After the inner end of the bone needle 5 is connected with the bone block, the outer end of the bone needle is fixed by a locking bolt arranged on the side surface of the needle clamping drafting seat 3, and then the bone needle moves together with the needle clamping drafting seat 3, so that the cut bone block is driven to move.

Furthermore, the inner ring groove steel plate 1 and the outer drafting frame 2 are both provided with connecting holes, and two ends of the connecting rod 6 are respectively arranged in the connecting holes.

Further, threaded holes are formed in the front end portion and the rear end portion of the inner ring groove steel plate 1 at intervals and used for placing locking screws 7, the installation position can be better met, and the installation stability and firmness of the inner ring groove steel plate 1 are guaranteed.

A use method of a long-stem bone locking steel plate stretching external fixator comprises the following steps when bone blocks slide in the positive direction:

s1, implanting the steel plate 1: fixing two ends of the inner ring groove steel plate 1 on the long dry bone by using locking screws 7, ensuring that the ring groove 11 is positioned at the middle position of the long dry bone, conveniently cutting infected bone blocks and stretching the bone blocks, then cutting the infected bone blocks, and suturing a wound after flushing;

s2, mounting the outer draft frame 2: cutting the skin at the connecting hole on the inner ring groove steel plate 1, fixing the inner end of the connecting rod 6 on the inner ring groove steel plate 1, and fixing the outer drafting bracket 2 pre-provided with the needle clamping drafting seat 3 at the top end of the connecting rod 6 to finish the installation of the outer drafting bracket 2;

when the external drafting frame 2 is installed, the distance between the external drafting frame 2 and the skin is ensured to be within the range of 10 +/-3 mm, and the external drafting frame is close to the skin as much as possible on the basis of not pressing the skin;

s3, installing the spicules 5: two spicules 5 are pre-installed in the installation holes on the spicule clamping traction seat 3, the inner ends of the spicules 5 are fixedly connected with a fixed bone block to be slipped and then fixed, and then a transverse osteotomy is performed at a position 2cm below a metaphysis tibial tubercle, so that the fixed bone block becomes a slipped bone block and a free state;

s4, installing the traction rod 4: presetting the length of the drafting rod 4 corresponding to the osteotomy, and then fixedly connecting the fixed support 42 at the end part with the outer drafting bracket 2 and the needle clamping drafting seat 3 to finish the installation;

s5, prestress draft: after the drafting rod 4 is installed, the adjusting bolt 43 at the outer end of the drafting rod 4 is adjusted to shorten the length of the drafting rod and drive the needle clamping drafting base 3 to move outwards;

s6, conveyance adjustment: adjusting the adjusting bolt 43 to enable the traction rod 4 to drive the needle clamping traction seat 3 to move, and further to draw the sliding bone block to slide towards the far end at a fixed speed until the sliding bone block slowly slides to the far end position to be healed with the far end section bone;

when in transportation and adjustment, the adjusting bolt 43 is rotated for one circle every day to drive the bone block to slide to the far end at the speed of 1 mm/day, and the speed is controlled and adjusted according to the condition of the new callus until the bone block slides to the far end position and is healed with the bone at the far end section;

s7, removing the outer drafting frame 2: after the bone blocks are healed, the external traction bracket 2 is firstly removed, and the inner ring groove steel plate 1 is continuously kept until the bone blocks are calcified and strong.

When the reverse sliding is performed by using the above-mentioned method, the operation method is the same as above, except that in step S3, the osteotomy position is at the distal metaphysis; in step S4, the fixed support 42 at the outer end of the draft bar 4 is connected to the other connecting support 21 on the outer draft frame 2.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.