TWI645832B - Knee surgery stretcher - Google Patents

Abstract

A mandibular surgery tensioning adjuster is provided with a base and a connecting base. A linear guide structure is formed between the base and the connecting base so that the two can move linearly relative to each other. A hook plate is protruded from each side, and the two hook plates are close to each other. An adjustment bolt is rotatably combined on the front side of the base, and the screw of the adjustment bolt is threaded through the front side of the connection seat. Insert the two hook plates that are close together into the mandibular bone cut in a vertical or horizontal direction, then turn the adjusting bolt according to the needs of the operation, use the two hook plates to open the incision of the mandible bone, and fix the distance of the incision of the mandible bone. Based on this distance, the position of the mandible can be further fine-tuned, which can improve the convenience and accuracy of orthognathic surgery.

Description

Mandibular surgery tension adjuster

The invention relates to an instrument for assisting the operation, in particular to a mandibular surgery tensioning adjuster.

When the existing orthognathic surgery is performed, after cutting the mandible, the broken bone after resection is recombined to the required position, and the modification of the mandible is completed. During orthognathic surgery, in order to ensure that the incisional mandible can be reorganized, the traditional method is to manually move the incisional mandible visually and adjust the incisional mandible to the desired position.

However, due to existing methods of orthopedic surgery to adjust the position of the mandible, the mandible is adjusted by visual inspection and manual methods. The lack of auxiliary equipment temporarily fixes the distance of the incision of the mandible, and this is used as the basis for fine-tuning the position of the mandible. Therefore, it is easy to have errors when moving the position of the mandible during surgery, which reduces the convenience and accuracy of the surgical operation.

Because the existing orthognathic surgery lacks an instrument for temporarily fixing the position of the mandible and finely adjusting the distance of the incision of the mandible, the convenience and accuracy of orthognathic surgery are reduced. For this reason, the present invention fixes the distance of the incision of the mandible by means of adjustable stretching width, thereby achieving the effect of assisting orthognathic surgery and improving the convenience and accuracy of the surgery.

In order to achieve the above object, the present invention provides a mandibular surgery tensioning adjustor. The structure includes a base, a connecting base located behind the base, and an adjusting bolt coupled between the base and the connecting base. Wherein: the base is provided with a base bottom block, a first hook plate is protruded inwardly from the inner surface of the base bottom block, and a rotary shaft seat is arranged on the outside of the base bottom block, penetrating in front and rear of the rotary shaft base A rotating shaft hole; the connecting base is provided with a connecting base bottom block, and a linear guiding structure is formed between the connecting base bottom block and the base bottom block. Through the linear guiding structure, the connecting base is moved forward and backward relative to the base. It moves linearly in the direction, and a second hook plate is protruded inwardly from the inner surface of the bottom block of the connection base. The second hook plate and the first hook plate are closed together, and a shaft hole seat is provided on the outside of the bottom block of the connection base. A screw hole is penetrated in front and rear of the shaft hole seat, and the screw hole is located directly behind the shaft hole; and the adjusting bolt is provided with a neck portion, and the neck portion is rotatably passed through the shaft hole, A screw extends rearward and coaxially at the rear end, and the screw is screwed The connecting base screw hole.

Further, the present invention corresponds to the positions on opposite sides of the rotation shaft hole, and two rotation pin holes are penetrated in the rotation shaft seat, and the extending directions of the two rotation holes are parallel; a ring-shaped positioning is recessed in the middle of the outer peripheral surface of the neck portion. A groove is inserted and fixed in each of the two pin holes, and the middle of the two pins passes through opposite sides of the positioning groove respectively.

Furthermore, the linear guide structure according to the present invention includes a linear slider and a linear track. The linear slider is a long rod body extending rearward from the rear surface of the base block. The linear track is along the front-rear direction. The perforation formed in the bottom block of the connecting seat passes through the contour of the linear track and the contour shape of the linear slider. The linear slider is inserted in the linear track in a slidable manner.

Preferably, in the present invention, a ruler scale shape extending backward from the front end of the linear slider is provided on the outside of the linear slider, and the up and down position of the ruler scale shape is higher than the up and down position of the screw.

Furthermore, the linear guide structure according to the present invention includes two linear sliders and two linear rails. The two linear sliders are long rod bodies that extend rearward from the upper and lower positions behind the base block respectively. The two linear rails are The bottom of the connecting seat is formed through the front and back directions, and the contour of each linear track matches the contour shape of the corresponding linear sliders. The two linear sliders are inserted in the two linear tracks in a slidable manner.

Preferably, in the present invention, a ruler scale shape extending backward from the front end of the linear slider is provided on the outer side of the upper linear slider, and the up and down position of the ruler scale shape is higher than the up and down position of the screw.

Furthermore, the present invention is provided with a head at the front end of the neck, and a fitting shape is formed on the head, and an adjustment turn is provided in cooperation with the head, and the adjustment turn is provided with a handle. There is a swivel rod, a universal joint is provided in the middle of the swivel rod, and a free end of the swivel rod is provided with a fitting piece which is fitted with the fitting shape.

Preferably, the fitting shape according to the present invention is a hexagonal hole formed in front of the head, and the fitting piece is a hexagonal column body matched with the polygonal hole.

The invention is a device for assisting orthognathic surgery. After the orthognathic incision is performed during orthognathic surgery, the first hook plate and the second hook plate of the invention are inserted into the incision of the mandible in a vertical or horizontal direction. So that the front of the first hook plate and the back of the second hook plate abut on the front and back surfaces of the incision of the mandible, and then the adjustment bolt is rotated with a tool, and the connection seat screwed on the screw guides through the straight line The structured rectilinear guide is retracted relative to the base, so that the distance between the first hook plate and the second hook plate is opened, the distance of the incision of the mandible is extended, and the position of the incisive mandible is fixed.

The effect of the present invention is that, due to the small volume when the first hook plate and the second hook plate are brought together, the first hook plate and the second hook plate can be opened by the rotation of the adjustment bolt after being placed in the incision of the mandible. Open the position of the cut mandible and support it. After the position of the jawbone is fixed, if you still need to adjust the width of the incision of the jawbone slightly, you can turn the adjustment knob to the original position. Make fine adjustments based on the spreading distance, which can improve the convenience and accuracy of the operation. After the operation is completed, the first hook plate and the second hook plate can be directly taken out of the incision of the mandible to remove the present invention, and no trace is left after the operation.

10‧‧‧ base

11‧‧‧ base block

12‧‧‧The first hook plate

121‧‧‧first support surface

13‧‧‧Spindle

131‧‧‧ shaft hole

132‧‧‧ bolt hole

133‧‧‧ Bolt

14‧‧‧Linear slider

141‧‧‧ Ruler scale shape

20‧‧‧Connector

21‧‧‧Connecting to the bottom block

22‧‧‧Second hook plate

221‧‧‧Second support surface

23‧‧‧shaft hole seat

231‧‧‧Thread hole

24‧‧‧Straight orbit

30‧‧‧Adjustment bolt

31‧‧‧ neck

311‧‧‧ positioning groove

32‧‧‧Screw

33‧‧‧Head

331‧‧‧ fit shape

40‧‧‧adjust turn

41‧‧‧handle

42‧‧‧Rod

421‧‧‧Universal joint

43‧‧‧ Fittings

A‧‧‧Linear Guiding Structure

FIG. 1 is a perspective view of a first preferred embodiment of the present invention.

Fig. 2 is an exploded view of the first preferred embodiment of the present invention.

Fig. 3 is a sectional view of a first preferred embodiment of the present invention.

FIG. 4 is a schematic diagram of a first preferred embodiment of the present invention for directly inserting a mandible cut.

FIG. 5 is a schematic diagram of a first preferred embodiment of the present invention for laterally inserting a mandibular cut.

FIG. 6 is a schematic diagram of the implementation of the first preferred embodiment of the present invention.

FIG. 7 is a perspective view of a second preferred embodiment of the present invention.

FIG. 8 is an exploded view of a second preferred embodiment of the present invention.

In order to understand the technical features and practical effects of the present invention in detail, and can be implemented in accordance with the contents of the description, the preferred embodiment shown in the drawings is further described in detail as follows.

Please refer to the first preferred embodiment of the present invention shown in FIG. 1 to FIG. 3 and FIG. 6. The present invention provides a mandibular surgical tension adjuster. The structure includes a base 10 and a rear portion of the base 10. A connecting base 20, an adjusting bolt 30 coupled between the base 10 and the connecting base 20, and an adjusting handle 40 matching the adjusting bolt 30, wherein: the base 10 is provided with a base bottom block 11, The base bottom block 11 is a rectangular block body. A first hook plate 12 is protruded inwardly at the rear edge of the inner surface of the base bottom block 11. The rectangular piece body extending in the direction, the inner end edge of the first hook plate 12 is a free end, the back of the first hook plate 12 is aligned with the back of the base bottom block 11, and is formed on the front of the first hook plate 12. A first supporting surface 121, preferably, the first supporting surface 121 is perpendicular to the inner surface of the base bottom block 11, and a rotating shaft seat 13 is protruded outwardly from the outside of the base bottom block 11. The shaft base 13 penetrates a shaft hole 131 in the front and back, corresponding to the positions on opposite sides of the shaft hole 131. For example, in the preferred embodiment, it corresponds to the inside and outside positions around the shaft hole 131. Two bolts are inserted in the shaft base 13 The holes 132 and the two pin holes 132 extend in parallel directions. The middle of the two pin holes 132 passes through the two sides around the pin holes 132 respectively. A straight slider 14 is formed by extending rearwardly from the rear surface of the base bottom block 11. The slider 14 is a rectangular long rod body extending in the front-rear direction. The upper edge of the linear slider 14 is higher than the upper position of the shaft seat 13. An upper edge of the linear slider 14 is provided by the linear slider. 14 The ruler scale shape 141 extending backward at the front end, the ruler scale shape 14 1 is a scale in millimeters.

The connecting base 20 is provided with a connecting base bottom block 21, which is a rectangular block body. A second hook plate 22 is protruded inward at the front edge of the inner surface of the connecting base bottom block 21. The two hook plates 22 are rectangular pieces extending in the up-and-down direction. The front of the second hook plate 22 is aligned with the front of the bottom block 21 of the connection base. A second support surface 221 is formed on the rear of the second hook plate 22. Preferably, the second supporting surface 221 is perpendicular to the inner surface of the bottom block 21 of the connection base, the second hook plate 22 and the first hook plate 12 are brought back and forth together, the connection base block 21 and the base bottom block 11 is back and forth together; a shaft hole seat 23 is protruded outwardly from the outside of the bottom block 21 of the connection seat, and a screw hole 231 is penetrated in the shaft hole seat 23 in front and rear according to the position of the shaft hole 131, and the screw hole 231 is located at Right behind the rotating shaft hole 131.

The linear slider 14 that cooperates with the base 10 runs through a linear track 24 in the middle of the connecting base block 21. The linear track 24 is a perforation with a contour around the contour of the linear slider 14. The base 10 The linear slider 14 is inserted into the linear rail 24 of the connecting base 20 in a slidable manner. The linear rail 24 cooperates with the linear slider 14 to form a linear guide structure A. The linear guide structure A makes the connection. The seat 20 moves linearly in the front-rear direction with respect to the base 10.

The adjusting bolt 30 is provided with a neck portion 31 which is a round rod body and is rotatably passed through the rotation shaft hole 131 of the base 10. A middle portion of the outer peripheral surface of the neck portion 31 is recessed and provided with a neck portion 31. The positioning grooves 311 pass through and fix a bolt 133 in the two bolt holes 132 respectively, and the middle of the two bolts 133 pass through the inside and the outside of the positioning groove 311, respectively, and the two bolts 133 are respectively pressed against the opposite sides of the positioning groove 311. The adjusting bolt 30 can only be rotated relative to the base 10 and cannot be moved forward and backward. A screw 32 extends coaxially from the rear end of the neck 31 to the rear. Please refer to FIG. 1. The upper and lower positions of the screw 32 are lower than the ruler. The upper and lower positions of the gauge scale shape 141, the screw 32 is threaded through the screw hole 231 of the connecting base 20, a head 33 is provided at the front end of the neck 31, and a fitting shape 331 is formed in the head 33. The fitting shape 331 of the preferred embodiment is a hexagonal hole formed in front of the head 33.

Referring to FIG. 6, the adjusting handle 40 is provided with a handle 41, a handle 42 is extended on the handle 41, and a universal joint 421 is provided in the middle of the handle 42 to cooperate with the fitting of the adjusting bolt 30. The fitting shape 331 is provided with a fitting piece 43 at the free end of the rotating rod 42. The fitting piece 43 is a hexagonal cylinder as in the preferred embodiment, so it can be inserted into the fitting shape 331 of the adjusting bolt 30. When the user rotates the handle 41, the adjusting bolt 30 can be rotated by the fitting member 43 after the rotation of the rotating lever 42 and the direction of the universal joint 421 are changed.

When the first preferred embodiment of the present invention is used, please refer to FIG. 4 and FIG. 5. Since the first hook plate 12 and the second hook plate 22 of the present invention are closed together, the width is narrow. After the jaw surgery is performed, the first hook plate 12 and the second hook plate 22 of the present invention can be inserted into the incision of the mandible from the bottom to the top or from the outside to the inside according to the user's choice. The first support surface 121 and the second support surface 221 abut against the front and back surfaces of the incision of the mandible, respectively. Next, referring to FIG. 6, the user inserts the fitting piece 43 of the adjusting handle 40 into the fitting shape 331 of the adjusting bolt 30, and drives the adjusting bolt 30 to rotate by rotating the adjusting handle 40. When the adjusting bolt 30 rotates, the connecting seat 20 screwed on the screw 32 will be opposed through the linear guide of the linear guide structure A. The base 10 is retracted. At this time, the first supporting surface 121 of the first hook plate 12 and the second supporting surface 221 of the second hook plate 22 will open the opposite sides of the jawbone incision and maintain a certain width.

After the setting of the present invention is completed, if the user still needs to finely adjust the width of the incision of the mandible and the position of the mandible, as long as the adjustment handle 40 is rotated again, a fine distance can be obtained based on the aforementioned spreading distance. The adjustment makes the operation more accurate and fast, which can improve the convenience and accuracy of the operation. When the inner edges of the first hook plate 12 and the second hook plate 22 are free ends after the operation is completed, the first hook plate 12 and the second hook plate 22 can be directly pulled out from the incision of the mandible. That is, the present invention can be taken off to complete the operation of the present invention to assist orthognathic surgery during surgery.

When the present invention is applied in a surgical procedure, when the base 10 and the connection base 20 are separated, the user can clearly observe the ruler scale shape 141 between the base 10 and the connection base 20 from the outside, and can Read the minimum distance between the first hook plate 12 and the second hook plate 22 to the smallest unit of millimeters, so that the user can not only adjust by the eye side, but can further use the ruler scale shape 141 The displayed data adjusts the position of the severed mandible, making the operation more evidence-based and reliable, corresponding to the planned distance before the operation. Furthermore, as shown in FIG. 3, since the two latch pins 133 are symmetrically positioned against the positioning groove 311 in the present invention, when the adjustment bolt 30 is surgically rotated, the reaction force restricting the adjustment bolt 30 from moving forward and backward is symmetrical. Therefore, the adjusting bolt 30 can be turned in a smoother manner to finely and accurately adjust the distance between the first hook plate 12 and the second hook plate 22 that is open and supports the mandible.

In the linear guide structure A of the present invention, in addition to forming the linear slider 14 on the base bottom block 11 and forming the linear rail 24 on the connecting base bottom block 21, the linear slider 14 may also be formed. And the positions formed by the linear track 24 are interchanged. The linear slider 14 is extended forward in front of the connecting base block 21, and the linear slider 14 is penetrated through the linear track formed in the base bottom block 11 back and forth. 24, so that the linear guiding structure A provided in this form can still achieve the linear guiding effect of linearly moving the connecting base 20 relative to the base 10.

In addition to the foregoing first preferred embodiment of the present invention, the linear guide structure A formed between the base base block 11 and the connection base base block 21 includes a linear slider 14 and a linear slider 14 that cooperates with the linear slider 14. In addition to the linear track 24, as shown in the second preferred embodiment of the present invention shown in FIGS. 7 to 8, the linear guide structure A may be a structure including two linear sliders 14 and two linear tracks 24.

In the second preferred embodiment, linear sliders 14 are formed at the upper and lower positions behind the base block 11 to extend rearwardly, and each linear slider 14 is a rectangular long rod body extending in the front-rear direction. The position of the upper edge of the linear slider 14 is higher than the position of the upper side of the rotating shaft seat 13. A ruler scale shape 141 extending rearward from the front end of the linear slider 14 is provided on the upper edge of the outer side of the linear slider 14 on the upper side. The ruler scale shape 141 is a scale in millimeters.

Cooperating with the two linear sliders 14, the linear rails 24 penetrate back and forth on the upper and lower sides of the connecting base block 21 respectively, and each linear rail 24 is a groove whose contour contour matches the contour of the contour of each linear slider 14. The two linear sliders 14 extending rearward from the base bottom block 11 are inserted in the two linear rails 24 formed on the connecting base block 21 in a slidable manner, and are formed by the two linear rails 24 and the two linear sliders 14. A linear guiding structure A is used to make the connecting seat 20 move linearly relative to the base 10 through the linear guiding structure A. In the above second preferred embodiment, the rest of the structure, the way of using the structure, and the effect that can be achieved are the same as those described in the first preferred embodiment, so the present invention will not repeat them here.

The above description is only the preferred embodiments of the present invention, and is not intended to limit the scope of the rights claimed by the present invention. Any other equivalent changes or modifications made without departing from the spirit disclosed by the present invention should be included in the present invention. Within the scope of patent application.

Claims (4)

A mandibular surgery tensioning adjuster includes a base, a connecting base located behind the base, and an adjusting bolt combined between the base and the connecting base, wherein the base is provided with a base bottom A block, a first hook plate is protruded inwardly from the inner surface of the base block, a shaft seat is provided on the outside of the base block, and a shaft hole is penetrated in front and rear of the shaft seat; the connection seat is provided with a connection A seat bottom block that forms a linear guide structure between the connecting seat bottom block and the base base block. Through the linear guide structure, the connecting seat moves linearly in the front-rear direction with respect to the base. A second hook plate is protruded inward from the inner surface of the second hook plate. The second hook plate and the first hook plate are closed together. A shaft hole seat is provided outside the bottom block of the connection seat, and a screw hole is penetrated in front and rear of the shaft hole seat. The screw hole is located directly behind the shaft hole; the adjusting bolt is provided with a neck portion, and the neck portion is rotatably passed through the shaft hole, and a screw extends coaxially rearward at the rear end of the neck portion, and the screw Screwed into a screw hole of the connecting base; and the linear guide The manufacturing process includes a linear slider and a linear track. The linear slider is a long rod body extending rearwardly from the rear surface of the base block. The linear track penetrates the base block formed in the connecting seat along the front-rear direction. Perforation, the contour of the linear track is consistent with the contour shape of the linear slider, and the linear slider is inserted into the linear track in a slidable manner. For example, the mandibular surgery tension adjuster of claim 1, wherein a scale scale shape extending backward from the front end of the linear slider is provided on the outside of the linear slider, and the upper and lower positions of the scale scale shape are higher than the screw. Up and down position. For example, the mandibular surgery stretch adjuster of claim 1 or 2, wherein a head is provided at the front end of the neck, and a fitting shape is formed on the head, and an adjustment knob is provided in cooperation with the head, and the adjustment knob The handle is provided with a handle, a rotating rod is extended on the handle, a universal joint is provided in the middle of the rotating rod, and a free fitting end is provided with a fitting piece that fits with the fitting shape. According to claim 3, the mandibular surgery stretch adjuster, wherein the fitting shape is a hexagonal hole formed in front of the head, and the fitting piece is a hexagonal column body matched with the polygonal hole.