A three-hollow-screw implantation guide device for femoral neck fracture surgery
By designing a variety of circular hole arrays and scale guide plates in femoral neck fracture surgery, combined with the "inverted triangle" or "positive triangle" implantation method, the problem of inaccurate positioning of three hollow nails was solved, achieving rapid and accurate The implantation reduces the risk of X-ray exposure and fracture recurrence, protects the health of patients and doctors.
Patent Information
- Application Number
- CN201911178852.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-11-27
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2039-11-27
AI Technical Summary
The intraoperative positioning of the three hollow nails during the femoral neck fracture surgery was inaccurate, resulting in the loss of bone mass within the femoral neck, increasing the non-healing and necrosis rate, and increasing the X-ray exposure of both doctors and patients, which harms health.
A surgical guide device for femoral neck fracture is designed, including a guide plate. By setting a variety of circular hole arrays and scales on the guide plate, combined with the "inverted triangle" or "positive triangle" hollow nail implantation method, it uses in vitro Accurate positioning, three hollow screws are implanted quickly and accurately.
The number of implantation times and X-ray exposure of hollow nail guide needles is reduced, the accuracy and efficiency of implantation is improved, the risks of fracture non-healing and femoral head necrosis are reduced, and the health of doctors and patients are protected.
Smart Images
Figure CN110693601B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of medical devices and relates to an implantation guide, in particular to a three-hollow-screw implantation guide device for femoral neck fracture surgery. Background Art
[0002] Femoral neck fractures often occur in middle-aged and elderly people. With the development of society, the number of femoral neck fractures in young and middle-aged people caused by traffic injuries, falls from heights and other reasons has increased year by year. The non-union rate and femoral head necrosis rate of femoral neck fractures are as high as more than 60%, which is a major problem in clinical treatment.
[0003] For young and middle-aged patients with femoral neck fractures under 60 years old or elderly patients with good bone quality, three hollow screw fixation is still the preferred treatment option. However, due to inaccurate intraoperative positioning, it is often necessary to repeatedly implant hollow screw guides and fluoroscopy, resulting in bone loss in the femoral neck, thereby aggravating the rate of nonunion of fractures and femoral head necrosis; at the same time, it increases the X-ray exposure time of doctors and patients, damaging the health of both doctors and patients.
[0004] Therefore, in the three-nail fixation of femoral neck fracture, there is an urgent need for a precise implantation guide that can ensure rapid and accurate implantation of the three hollow nails with a minimum number of hollow nail guide pin insertions and a minimum amount of X-ray exposure. Summary of the invention
[0005] The purpose of the present invention is to provide a three hollow nail implantation guide device for femoral neck fracture surgery. The three hollow nail implantation guide device for femoral neck fracture surgery is to solve the technical problem of inaccurate intraoperative positioning of the three hollow nails in femoral neck fracture surgery in the prior art.
[0006] The three hollow nail implantation guide device for femoral neck fracture surgery of the present invention includes a guide plate, the length of the guide plate is 7 cm, the width is 6 cm, and the thickness is 5 mm. A first central circular hole is arranged in the center of the guide plate, and the diameter of the first central circular hole is 4 mm. A rhombus circular hole array is arranged on the right side of the first central circular hole. Any side of the rhombus circular hole array is composed of three circular holes arranged, and the distance between the centers of any two adjacent circular holes is 6 mm. The center of the rhombus circular hole array includes a second central circular hole, and the distance between the center of the rightmost circular hole of the rhombus circular hole array and the right side of the guide plate is 1.2 cm. The line between the center of the second central circular hole and the center of the first central circular hole is located on the horizontal center line of the guide plate, and an inverted trapezoidal circular hole array is arranged in the upper left corner direction of the first central circular hole, and a A trapezoidal circular hole array is arranged, and the inverted trapezoidal circular hole array is composed of four circular holes, three circular holes and two circular holes arranged horizontally from top to bottom, wherein the distance between the centers of any two adjacent circular holes is 6mm, wherein the distance between the center of the leftmost circular hole and the left side and upper side of the guide plate is 1.2cm, wherein the diameter of any one of the circular holes is 4mm, and the trapezoidal circular hole array is composed of two circular holes, three circular holes and four circular holes arranged horizontally from top to bottom, wherein the distance between the centers of any two adjacent circular holes is 6mm, wherein the distance between the center of the leftmost circular hole and the left side and lower side of the guide plate is 1.2cm, and the line connecting the center of the central circular hole of the inverted trapezoidal circular hole array and the center of the trapezoidal circular hole array is parallel to the left side of the guide plate, wherein the diameter of any one of the circular holes is 4mm, and a scale is provided on at least one side of the guide plate.
[0007] Furthermore, an auxiliary circular hole is provided at the midpoint of a line connecting the center of the central circular hole of the inverted trapezoidal circular hole array and the center of the central circular hole of the trapezoidal circular hole array.
[0008] Furthermore, the guide plate is curved in an arc shape with an arc of 170 to 180 degrees.
[0009] Furthermore, the guide plate is provided with scales on the sides in the length direction and the width direction.
[0010] Furthermore, the distance between the center of the leftmost circular hole of the inverted trapezoidal circular hole array and the center of the leftmost circular hole of the trapezoidal circular hole array is 36 mm.
[0011] Furthermore, the vertical distance between the center of the rightmost circular hole in the diamond circular hole array and the center of the leftmost circular hole in the inverted trapezoidal circular hole array and the center of the leftmost circular hole in the trapezoidal circular hole array is 46 mm.
[0012] Furthermore, the hollow screws each pass through any hole in the rhombus circular hole array, any hole in the inverted trapezoidal circular hole array, and any hole in the trapezoidal circular hole array.
[0013] The present invention cooperates with the "inverted triangle" hollow screw implantation method for clinical treatment of femoral neck fractures, and three circular hole arrays are respectively arranged with the front upper part, the rear upper part and the middle lower part of the femoral neck as the center. The three circular hole arrays can be accurately positioned from the outside of the body, and three hollow screws can be implanted quickly and accurately using the three circular hole arrays. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 The present invention is a schematic structural diagram of a guide plate in a guide device for implanting three hollow nails in a femoral neck fracture operation.
[0015] Figure 2 The present invention is a schematic structural diagram of a hollow screw in a guide device for implanting three hollow screws for femoral neck fracture surgery.
[0016] Figure 3 This is a schematic diagram of the "inverted triangle" hollow nail implantation method for the clinical treatment of femoral neck fractures.
[0017] Figure 4 It is a schematic diagram of the operation of the "inverted triangle" hollow nail implantation method for clinically treating femoral neck fracture using the guide of the present invention.
[0018] Figure 5 This is a schematic diagram of the "right triangle" hollow nail implantation method for the clinical treatment of femoral neck fractures.
[0019] Figure 6 It is a schematic diagram of the operation of the "right triangle" hollow nail implantation method for clinically treating femoral neck fracture using the guide of the present invention. DETAILED DESCRIPTION
[0020] like Figure 1As shown, the three hollow nail implantation guide device for femoral neck fracture surgery of the present invention is a guide plate 1, the length of the guide plate 1 is 7cm, the width is 6cm, and the thickness is 5mm. A first central circular hole 3 is arranged in the center of the guide plate 1, and the diameter of the first central circular hole 3 is 4mm. A rhombus circular hole array 4 is arranged on the right side of the first central circular hole 3, and any side of the rhombus circular hole array 4 is composed of three circular holes arranged, and the distance between the centers of any two adjacent circular holes is 6mm. The center of the rhombus circular hole array 4 includes a second central circular hole 5, and the distance between the center of the rightmost circular hole 6 of the rhombus circular hole array 4 and the right side of the guide plate 1 is 1.2cm. The line between the center of the second central circular hole 5 and the center of the first central circular hole 3 is located on the horizontal center line of the guide plate 1, and an inverted trapezoidal circular hole array 7 is arranged in the upper left corner of the first central circular hole 3. A trapezoidal circular hole array 8 is arranged in the lower left corner, and the inverted trapezoidal circular hole array 7 is composed of four circular holes, three circular holes and two circular holes arranged horizontally from top to bottom, wherein the distance between the centers of any two adjacent circular holes is 6mm, wherein the distance between the center of the leftmost circular hole 9 and the left side and upper side of the guide plate 1 is 1.2cm, and the diameter of any one of the circular holes is 4mm. The trapezoidal circular hole array 8 is composed of two circular holes, three circular holes and four circular holes arranged horizontally from top to bottom, wherein the distance between the centers of any two adjacent circular holes is 6mm, wherein the distance between the center of the leftmost circular hole 10 and the left side and lower side of the guide plate 1 is 1.2cm, and the line connecting the center of the central circular hole of the inverted trapezoidal circular hole array 7 and the center of the trapezoidal circular hole array 8 is parallel to the left side of the guide plate 1, wherein the diameter of any one of the circular holes is 4mm, and a scale is provided on at least one side of the guide plate 1.
[0021] Furthermore, an auxiliary circular hole 11 is provided at the midpoint of a line connecting the center of the central circular hole of the inverted trapezoidal circular hole array 7 and the center of the central circular hole of the trapezoidal circular hole array 8 .
[0022] Furthermore, the guide plate 1 is curved in an arc shape, and the arc angle is 170 to 180 degrees.
[0023] Furthermore, the guide plate 1 is provided with scales on the sides in the length direction and the width direction.
[0024] Furthermore, the distance between the center of the leftmost circular hole of the inverted trapezoidal circular hole array 7 and the center of the leftmost circular hole of the trapezoidal circular hole array 8 is 36 mm.
[0025] Furthermore, the vertical distance between the center of the rightmost circular hole 6 in the diamond circular hole array 4 and the center of the leftmost circular hole in the inverted trapezoidal circular hole array 7 and the center of the leftmost circular hole in the trapezoidal circular hole array 8 is 46 mm.
[0026] Furthermore, the hollow screws each pass through any hole in the rhombus circular hole array 4 , any hole in the inverted trapezoidal circular hole array 7 , and any hole in the trapezoidal circular hole array 8 .
[0027] like Figure 3 , Figure 4 As shown, when the present invention is used, the "inverted triangle" hollow nail implantation method for clinical treatment of femoral neck fracture, that is, the hollow nails are implanted in the front upper part, the back upper part and the middle lower part of the femoral neck respectively. First, the results measured on the X-ray film before the operation (such as the distance from the intersection of the line connecting the apex of the femoral trochanter to the lower edge of the femoral neck and the femoral midline, which is approximately the distance from the left side of the guide plate 1 to the central circular hole of the diamond-shaped circular hole array 4) are obtained. After disinfection and draping during the operation, according to the data measured before the operation, the first hollow nail guide needle is implanted in the trapezoidal circular hole array 8 after preliminary positioning, and then the position of the guide plate 1 is adjusted according to the position of the guide needle by perspective. After the position of the guide plate 1 is adjusted, the second hollow nail guide needle is implanted in the central circular hole 3 of the guide plate 1, and the guide plate 1 can be fixed to the skin surface. Then the third and fourth hollow nail guide needles are implanted in the inverted trapezoidal circular hole array 7 and the diamond-shaped circular hole array 4 respectively. Then the position of the first guide needle is adjusted to the appropriate circular hole position of the trapezoidal circular hole array 8. Finally, three hollow screws 2 are implanted in the three hollow nail guide pin positions in the central holes of the trapezoidal circular hole array 8, the inverted trapezoidal circular hole array 7 and the rhombus circular hole array 4.
[0028] like Figure 5 , Figure 6 As shown, in addition, the "right triangle" hollow nail implantation method for clinical treatment of femoral neck fracture is also applicable to the present invention, that is, the hollow nails are implanted in the upper middle, lower front and lower back of the femoral neck respectively. At this time, the guide needs to be rotated 180° on the skin surface, and the inverted trapezoidal circular hole array 7 becomes a trapezoidal circular hole array 7, and the trapezoidal circular hole array 8 becomes an inverted trapezoidal circular hole array 8. First, the results measured on the X-ray film before the operation (such as the distance from the apex of the femoral trochanter to the intersection of the line connecting the upper edge of the femoral neck and the femoral midline, which is approximately the distance from the left side of the guide plate 1 to the central circular hole of the diamond circular hole array 4), after disinfection and draping during the operation, according to the preoperative measurement data, the first hollow nail guide needle is implanted in the trapezoidal circular hole array 7 after preliminary positioning, and then the perspective is performed, and the position of the guide plate 1 is adjusted according to the position of the guide needle. After the position of the guide plate 1 is adjusted, the second hollow nail guide needle is implanted in the central circular hole 3 of the guide plate 1, and the guide plate 1 can be fixed to the skin surface. Then, the third and fourth hollow screw guide needles are implanted in the inverted trapezoidal circular hole array 8 and the diamond circular hole array 4 respectively, and then the first hollow screw guide needle is adjusted to the appropriate circular hole position of the trapezoidal circular hole array 7. Finally, three hollow screws 2 are implanted according to the positions of the three hollow screw guide needles in the inverted trapezoidal circular hole array 8, the trapezoidal circular hole array 7 and the diamond circular hole array 4.
Claims
1. A three-hollow-screw implantation guide device for femoral neck fracture surgery, comprising a guide plate, characterized in that: The guide plate has a length of 7 cm, a width of 6 cm, and a thickness of 5 mm. A first central circular hole is arranged in the center of the guide plate, and the diameter of the first central circular hole is 4 mm. A diamond-shaped circular hole array is arranged on the right side of the first central circular hole. Any side of the diamond-shaped circular hole array is composed of three circular holes arranged, and the distance between the centers of any two adjacent circular holes is 6 mm. The center of the diamond-shaped circular hole array includes a second central circular hole. The distance between the center of the rightmost circular hole of the diamond-shaped circular hole array and the right side of the guide plate is 1.2 cm. The line connecting the center of the second central circular hole and the center of the first central circular hole is located on the horizontal center line of the guide plate. An inverted trapezoidal circular hole array is arranged in the upper left corner of the first central circular hole, and a trapezoidal circular hole array is arranged in the lower left corner of the first central circular hole. The inverted trapezoidal circular hole array is arranged in the lower left corner of the first central circular hole. The hole array is composed of four circular holes, three circular holes and two circular holes arranged horizontally from top to bottom, wherein the distance between the centers of any two adjacent circular holes is 6 mm, wherein the distance between the center of the leftmost circular hole and the left side and upper side of the guide plate is 1.2 cm, and the diameter of any one of the circular holes is 4 mm. The trapezoidal circular hole array is composed of two circular holes, three circular holes and four circular holes arranged horizontally from top to bottom, wherein the distance between the centers of any two adjacent circular holes is 6 mm, wherein the distance between the center of the leftmost circular hole and the left side and lower side of the guide plate is 1.2 cm, and the line connecting the center of the central circular hole of the inverted trapezoidal circular hole array and the center of the trapezoidal circular hole array is parallel to the left side of the guide plate, wherein the diameter of any one of the circular holes is 4 mm, and a scale is provided on at least one side of the guide plate.
2. The three-hollow-screw implantation guide device for femoral neck fracture surgery according to claim 1, characterized in that: An auxiliary circular hole is arranged at the midpoint of a line connecting the center of the central circular hole of the inverted trapezoidal circular hole array and the center of the central circular hole of the trapezoidal circular hole array.
3. The three-hollow-screw implantation guide device for femoral neck fracture surgery according to claim 1, characterized in that: The guide plate is curved in an arc shape with an arc angle of 170 to 180 degrees.
4. The three-hollow-screw implantation guide device for femoral neck fracture surgery according to claim 1, characterized in that: The guide plate is provided with scales on the sides in the length direction and the width direction.
5. The three-hollow-screw implantation guide device for femoral neck fracture surgery according to claim 1, characterized in that: The distance between the center of the leftmost circular hole of the inverted trapezoidal circular hole array and the center of the leftmost circular hole of the trapezoidal circular hole array is 36 mm.
6. The three-hollow-screw implantation guide device for femoral neck fracture surgery according to claim 1, characterized in that: The vertical distance from the center of the rightmost circular hole in the diamond circular hole array to the center of the leftmost circular hole in the inverted trapezoidal circular hole array and the center of the leftmost circular hole in the trapezoidal circular hole array is 46 mm.
7. The three-hollow-screw implantation guide device for femoral neck fracture surgery according to claim 1, characterized in that: The three hollow screws respectively pass through any hole in the diamond-shaped circular hole array, any hole in the inverted trapezoidal circular hole array and any hole in the trapezoidal circular hole array.
Citation Information
Patent Citations
Three-hollow-screw implantation guiding device for femoral neck fracture operation
CN211962172U