TWI542318B - Multi - axial jaw angle retractor - Google Patents

Description

Multi-axial lower corner tractor

The invention relates to a lower corner angle tractor, in particular to a multi-axial lower angle angle tractor, which utilizes the design of the ball joint to make the tractor reach the adjustment multi-axial direction, and drives the movement and the stretching action of the bone through the rotating flexible member. Stimulate bone regeneration.

Common clinical problems such as falls, sports injuries caused by external impact, or traffic accidents, treatment needs, such as tumor resection, repair of the appearance of the patient and other factors that cause the lower jaw bone defects, because the lower jaw bone is not only an important role in the face, but also It affects pronunciation and bite integrity. However, due to the special shape of the mandible, each side has a corner structure with a large turning angle. If the lower corner structure is defective, in order to achieve aesthetic requirements, the difficulty in reconstruction may be improved.

At present, the reconstruction methods of the upper and lower humeral defects can be divided into two types. One is to use the autologous bone to perform the skin reconstruction operation. This method is commonly used to cut the shape and size of the lower jaw bone by cutting the patient's own humerus and using surgical methods. The patient's defect is fixed with bone nails or bone plates. However, the humerus is an important bone that connects the calf muscles. It bears 1/6 of the body weight. Therefore, cutting the tibia may cause difficulty in walking and has aesthetic concerns. Traction osteogenesis is used to promote the new reaction of the bone and surrounding tissues by the tension adjustment of the tractor, in addition to increasing the length of the bone and promoting the formation of surrounding soft tissue, because it does not need to use other parts of the autologous bone for transplantation. Therefore, the surgical invasion range is small and clinically less complications occur, and it has been widely used in clinical treatment.

With the improvement of the tractor in recent years, it can be roughly divided into two types of intraoral and extraoral traction devices according to the use mode; the traction process of the intraoral traction device is completed in the mouth, although the traction effect can be achieved without affecting the appearance of the face. However, the surgical placement of the tractor is affected by the intraoral space, which makes the clinician more cumbersome to use; in contrast, the external traction device may leave scars on the face after surgery, but because the operation process is less than the mouth The influence of internal space can improve the degree of skeletal deformity compared with the intraoral traction device, and the shape of the posterior tibia is also better. Therefore, the extraoral traction device is gradually being widely used in clinical practice.

Referring to FIG. 10, a conventional external retractor is provided with a screw 50 at each end of a joint joint 52, and an upper assembly 501 and a lower assembly 502 are respectively disposed on each of the screws 50. The positioning position of the lower jaw bone pin is determined by the guiding device, and then the relative angles of the two screws of the external tractor are adjusted to a specific angle, and then the upper component 501 and the lower component of each screw 50 are respectively 502 is connected by a plurality of plugs and locked into the lower jaw bone. By the pitch of each screw 50, the number of rotations has reached the required length of daily bone growth, and the length of the bone is extended and the surrounding soft tissue regeneration is stimulated. In the reconstruction of the patient's occlusion and pronunciation function, the rotation of the screw 50 is used to drive the relative movement between the bones, so that the new bone and surrounding soft tissue continue to produce inflammation and regeneration reaction, thereby promoting the growth of the osteoblast to achieve defect repair. However, although the conventional retractor can regenerate the bone via the traction function and achieve two-dimensional plane adjustment, the joint joint 52 that is engaged can only provide adjustment of a single plane direction, and only through the screw 50 as an adjustment, causing the mandible. The angle and direction are limited when healing.

Therefore, in view of the above problems, how to develop an innovative structure that is more ideal and practical, the consumers are eagerly awaiting, and the relevant industry must work hard to develop breakthroughs. Goals and directions.

The present invention is a multi-axial downturn angle tractor, comprising: a support portion, one end of the support portion is disposed on a screwing portion, the screw portion is disposed on a first fixing portion, and the other end of the supporting portion is fixed a ball joint, the ball joint is disposed at one end of a latching portion through a second fixing portion, and the first fixing portion and the second fixing portion are respectively provided with a plurality of holes; a flexible member, the flexible member is sleeved The two ends of the flexible member abut against the rotating portion and the twisting portion respectively on the outer peripheral edge of the supporting portion and the locking portion; a pressing rod, one end of the pressing rod is disposed on the locking portion relative to the locking portion The other end of the support portion is affixed to the ball joint, the other end of the pressing rod is disposed at the twisting portion, and a plurality of latches are respectively disposed on the first fixing portion and the second fixing portion. Hole.

A cover body is disposed on the two sides of the cover body, and two groove grooves are respectively disposed on the top surface of the cover body. The two ends of the cover body are respectively disposed on the first fixing portion and the second fixing portion. Each of the pins is disposed in each of the slots of the cover body and respectively penetrates the holes of the first fixing portion and the second fixing portion.

Wherein, one end of the pressing rod is a thread, and the other end is a multi-faceted column-shaped abutting portion, and the abutting portion is disposed through the rotating portion.

Wherein, the surface of the outer surface of the card abutting portion is respectively provided with a concave portion at a symmetrical position, and each of the concave portions is slightly lower than a flat surface of the outer ring surface of the engaging portion.

The plurality of screws are screwed to the first fixing portion and the second fixing portion to fix the pins.

Through the invention, the lower jaw bone defect surface can be adjusted according to different ones, and the multi-axial angle unique to the ball joint is used to three-dimensionally adjust and pull the rail of the lower jaw bone and the lower jaw corner. Traces can effectively improve the problem of incomplete bone healing after surgery, reducing the risk of requiring a second surgery or a defect in the defect.

Next, a preferred embodiment will be described, and the present invention will be further described in conjunction with the drawings and the drawings, so that the reviewing committee can have a more detailed understanding of the creation and enable those skilled in the art to implement it. . The following is a description of the preferred embodiments, and is not intended to limit the scope of the invention, and the invention is intended to be in the scope of the invention.

〔this invention〕

10‧‧‧Tractor body

12‧‧‧ Cover

121‧‧‧Baffle

122‧‧‧ Groove

141‧‧‧First Fixed Department

1411‧‧‧ Hole

142‧‧‧Second fixed department

1421‧‧‧ hole

15‧‧‧Rotation

16‧‧‧Torque

17‧‧‧Support

171‧‧‧Ball joints

18‧‧‧Flexible components

20‧‧‧ latch

21‧‧‧Cards

22‧‧‧ Pressure bar

221‧‧‧ thread

222‧‧‧Responsible Department

25‧‧‧ recess

26‧‧‧ screws

40‧‧‧ Lower jaw bone

[Use]

50‧‧‧ screw

501‧‧‧Upper components

502‧‧‧lower components

52‧‧‧ joint joint

Figure 1 is a perspective view of the cover body of the present invention

Figure 2 is a perspective view of the unmounted cover of the present invention

Figure 3 is a perspective exploded view of the present invention

Figure 4 is a schematic cross-sectional view of the present invention

Figure 5 is a schematic cross-sectional view showing the traction effect of the rotary compression flexible member of the present invention.

Figure 6 is a multi-axial schematic view of the ball joint adjustment of the present invention.

Figure 7 is a schematic diagram of the humeral defect

Figure 8 is a schematic view of the tibia of the present invention installed in the defect

Figure 9 is a schematic diagram of the bone regeneration of the tibia in the defect of the present invention.

Figure 10 is a schematic diagram of the habit

Referring to FIGS. 1-9, the present invention is a multi-axial downturn angle tractor, comprising: a support portion 17, one end of the support portion 17 is disposed on a screw portion 15, the screw portion The first fixing portion 141 is disposed on a first fixing portion 141. The other end of the supporting portion 17 is fixed with a ball joint 171. The ball joint 171 is disposed at one end of a locking portion 21 through a second fixing portion 142. The first fixing portion 141 and the second fixing portion 142 are respectively provided with a plurality of holes 1411, 1421; a flexible member 18, the flexible member 18 is sleeved on the outer periphery of the supporting portion 17 and the engaging portion 21, and the flexible member 18 The end is respectively abutted against the screwing portion 15 and the twisting portion 16; a pressing rod 22, and one end of the pressing rod 22 is disposed on the card abutting portion 21 to mortgage the ball joint 171 with respect to the other end of the supporting portion 17 The other end of the pressure-applying rod 22 is disposed in the twisting portion 16 and the plurality of latches 20, and the plugs 20 are respectively disposed in the holes 1411 and 1421 of the first fixing portion 141 and the second fixing portion 142. .

A cover 12 is disposed on each of the two sides of the cover 12, and two slots 22 are respectively disposed on the top surface of the cover 12. The two ends of the cover 12 are respectively disposed on the first fixing portion 141. And the second fixing portion 142, the groove 122 is formed into a bending angle, and the suitable bending angle can be selected according to the user's requirements. In addition, the cover body can avoid the rotation of each of the pins 20 during the pulling process.

The pressing rod 22 has a thread 221 at one end and a multi-sided column-shaped resisting portion 222 at the other end. The abutting portion 222 is disposed through the rotating portion 16 .

Referring to FIG. 3 and FIG. 7-9, when the user is injured in the tibia 40, the first fixing portion 141 and the second fixing portion 142 in the tractor body 10 are respectively disposed at the injured portion of the mandible 40. The two sides of the first fixing portion 141 pass through the holes 1411 and the second fixing portion 142 of the first fixing portion 141. Each of the holes 1421 is further disposed on the lower tibia 40, and then the plugs 20 are secured by a plurality of screws 26 to prevent their positions. Move the slide.

In order to stimulate bone regeneration, the tensioning portion 16 is adjusted to perform the stretching action and the position of the first fixing portion 141 is not changed. When the knob portion 16 is rotated clockwise, the flexible member 18 and the screwing portion 15 are driven. When the idling is performed, the second fixing portion 142 moves along the trajectory of the flexible member 18 toward the first fixing portion 141. If the growth of the mandible 40 and the angle of the lower tibia 40 are deviated from the expected, the ball can be adjusted. The position and angle of the joint 171 are used to correct the bone growth position, and the traction trajectory of the tractor body 10 is adjusted by a multi-axial angle. After the position adjustment is determined, the pressure-applying rod 22 is tightened to tighten the ball joint 171. The ball joint is fixed without rotation; if the pressure bar 22 is loosened, the rotation angle of the ball joint can be adjusted.

In the above, the mandible 40 is grown by the bone regeneration, and the flexible member 18 is bent as a stroke element, and the flexible member 18 is rotated to drive the second fixing portion 142 toward the first fixing portion. Move in direction.

Wherein, the flexible member 18 is a main stroke element for pulling the movement of the lower tibia 40. If the structural strength of the flexible member 18 is higher, the ability to promote the movement of the lower tibia 40 is stronger; and The flexible member 18 can be driven in conjunction with changes in the different angles of the ball joint 171.

Wherein, the outer surface of the card abutting portion 21 is respectively provided with a concave portion 25 at a symmetrical position, and each of the concave portions 25 is a flat surface slightly lower than the outer ring surface of the engaging portion 21; when the tractor body 10 is required to be fixed at an angle At the same time, the take-up wrench is clamped and fixed in the recessed portion 25, and the other device capable of rotating the resisting portion 222 is rotated to rotate the resisting portion 222 to perform the angle fixing function of the tractor body 10 (not shown). .

When the tractor body 10 needs to be stretched, the twisting portion 16 is rotated to perform the stretching action of the tractor body 10 (see FIGS. 8-9).

Therefore, in contrast to the conventional retractor, the present invention utilizes the multi-axial angle unique to the ball joint 171 to three-dimensionally adjust and pull the trajectory of the mandible 40 to reconstruct the humeral 40 defect in response to different clinical angles and curvatures. The risk of secondary surgery, incomplete coverage of the defect, or incomplete healing of the bone is required. Furthermore, the present invention not only adjusts the angle conveniently but also more effectively rebuilds the function of the mandible 40 of the patient, and can improve the willingness of the clinician to use Convenience can also improve the effectiveness of surgery and further improve medical quality for the benefit of patients.

It is to be noted that the above-described embodiments are merely illustrative of the principles of the invention and its advantages, and are not intended to limit the scope of the invention. Modifications and variations of the embodiments can be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention should be as described in the appended claims.

10‧‧‧Tractor body

141‧‧‧First Fixed Department

142‧‧‧Second fixed department

16‧‧‧Torque

18‧‧‧Flexible components

20‧‧‧ latch

222‧‧‧Responsible Department

Claims (5)

A multi-axial lower angle angle tractor includes a support portion, one end of the support portion is disposed on a screwing portion, the screw portion is disposed on a first fixing portion, and a ball joint is fixed at the other end of the support portion. The ball joint is disposed at one end of a card abutting portion through a second fixing portion, and the first fixing portion and the second fixing portion are respectively provided with a plurality of holes; a flexible member, the flexible member is sleeved on the support And the outer periphery of the card abutting portion, the two ends of the flexible member respectively abut against the screwing portion and a twisting portion; a pressing rod, one end of the pressing rod is disposed on the supporting portion relative to the supporting portion The other end of the other end of the hole is secured to the ball joint, and the other end of the pressing rod is disposed at the twisting portion; and the plurality of latches are respectively disposed through the holes of the first fixing portion and the second fixing portion. The multi-axial lower corner yoke retractor according to claim 1, wherein a cover body is respectively provided with a baffle on each side of the cover body, and two grooves are respectively disposed on the top surface of the cover body, and the cover is respectively provided. The two ends of the body are respectively disposed on the first fixing portion and the second fixing portion, and each of the pins is disposed in each of the slots of the cover body and respectively penetrates the first fixing portion and the second fixing portion Hole. The multi-axial downturn angle tractor according to claim 1, wherein the pressure rod has a thread at one end and a multi-sided column-shaped abutting portion at the other end, the abutting portion is disposed in the Rotating part. The multi-axial downturn angle retractor of claim 1, wherein the outer surface of the abutting portion is respectively provided with a concave portion at a symmetrical position, and each of the concave portions is slightly lower than the outer ring surface of the engaging portion. Flat surface. The multi-axial downturn angle tractor according to claim 1, wherein the first solid The fixed portion and the second fixing portion are screwed with a plurality of screws to fix the latches.