CN111529039A - Femoral neck fracture support screw guider - Google Patents
Femoral neck fracture support screw guider Download PDFInfo
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- CN111529039A CN111529039A CN202010388233.9A CN202010388233A CN111529039A CN 111529039 A CN111529039 A CN 111529039A CN 202010388233 A CN202010388233 A CN 202010388233A CN 111529039 A CN111529039 A CN 111529039A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/90—Guides therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
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Abstract
The invention discloses a femoral neck fracture supporting screw guider which comprises two guider main bodies which are bilaterally symmetrical, wherein each guider main body comprises a holding body, a guiding handle and a femoral anti-skidding contact plate, a guide pin inlet is formed in the holding body, a guide pin outlet is formed in the femoral anti-skidding contact plate, a guide pin channel is formed in the guiding handle, the guide pin inlet, the guide pin channel and the guide pin outlet are linearly communicated, the femoral anti-skidding contact plate has an included angle of 30 degrees relative to the guiding handle on a coronal plane, and the femoral anti-skidding contact plate has an angle of 15 degrees relative to the guiding handle on a sagittal plane. The femoral neck fracture support screw guider can ensure that the guide pin and the femoral shaft are not easy to slide, can accurately control the direction of the guide pin to ensure that the guide pin is smoothly inserted, reduces the needle inserting times, effectively shortens the operation time and the learning curve of an operator, and avoids femoral shaft fracture caused by loosening, failure and even repeated needle insertion after the guide pin is inserted; the X-ray fluoroscopy times in the operation are reduced, thereby reducing the iatrogenic radiation injury.
Description
Technical Field
The invention relates to the field of medical supplies, in particular to a femoral neck fracture support screw guider.
Background
The femoral neck part has special blood circulation and anatomy, and once fracture occurs, nonunion or femoral head necrosis easily occurs. The old patients can choose femoral head replacement, but particularly the femoral neck fracture in young and strong years is fixed to be the first choice. Therefore, the internal fixation treatment mode of femoral neck fracture is always the key and difficult problem of trauma orthopedics.
In the current scheme of fixing the fracture of the neck of femur, most experts in the past adopt 3 hollow nails a to fix the fracture of the neck of femur in a way that the shape of an inverted Chinese character 'pin' is parallel to the direction of the neck of femur. However, this solution has the disadvantage of insufficient biomechanical strength, especially the tendency to cause failure of internal fixation after underground activities (see fig. 1). Many patients are easy to have nonunion and even femoral head necrosis, and need to carry out secondary operation internal fixation and revision. In severe cases, the joint replacement in later period is needed, which causes huge economic and social burden to families and society. There are other internal fixation methods like dynamic hip screws or abduction osteotomies of the hip joint, but none are widely accepted.
Aiming at the defects of the traditional hollow nail fixing technique, in recent years, experts adopt an F-shaped hollow nail internal fixing scheme aiming at femoral neck fracture, and perform clinical application and perfect biomechanical detection of a large sample. However, the most critical step of this fixing scheme is to drive a supporting screw b under the lesser trochanter of femur, which is difficult to insert by conventional insertion methods (the insertion direction of the guide pin requires large inclined included angles between the right and lateral photographs, the femoral shaft and the femoral neck). The existing guide pin guider is directly adopted, the guide pin (namely the supporting screw b) is easy to slide with the femoral shaft, the direction of the guide pin (the supporting screw b) is difficult to be accurately controlled, and the guide pin can be placed for a plurality of times under X-ray perspective to reach a satisfactory position (as shown in figures 2 and 3). Therefore, the main difficulty in fixing femoral neck fractures by using "F" type screws is:
1. the operation difficulty is high, the operation time is prolonged, and the operator has long learning curve;
2. increased radiation exposure for the operating surgeon and patient;
3. repeated needle placement at the proximal end of the femoral shaft can damage the femoral cortex at the needle insertion position, so that the hollow nail is loosened and fails after being finally inserted, and fracture of the femoral shaft can be caused in severe cases.
To this end, a new femoral neck fracture support screw guide was designed to ameliorate the aforementioned disadvantages.
Disclosure of Invention
In order to solve the problems, the invention provides a femoral neck fracture support screw guider, wherein a guide pin and a femoral shaft are not easy to slide, the direction of the guide pin can be accurately controlled, the guide pin can be smoothly and accurately inserted, the number of times of inserting the guide pin is reduced, the operation time and the learning curve of an operator are effectively shortened, and the defect that the outer cortex of the femur generates mechanical weak points due to multiple times of inserting the guide pin so as to cause looseness, failure and even femoral shaft fracture after the guide pin is inserted is avoided; the X-ray fluoroscopy times in the operation are reduced, thereby reducing the iatrogenic radiation injury.
In order to achieve the purpose, the invention provides a femoral neck fracture supporting screw guider which comprises two guider main bodies which are bilaterally symmetrical, wherein each guider main body comprises a holding body, a guiding handle and a femoral anti-sliding contact plate, the holding body is provided with a guiding needle inlet, the femoral anti-sliding contact plate is provided with a guiding needle outlet, a guiding needle channel is arranged in the guiding handle, the guiding needle inlet, the guiding needle channel and the guiding needle outlet are communicated in a straight line, the femoral anti-sliding contact plate has an included angle of 30 degrees relative to the guiding handle on a coronal plane, and the femoral anti-sliding contact plate has an angle of 15 degrees relative to the guiding handle on a sagittal plane.
As a further improvement of the invention, the contact surface of the femur anti-skid contact plate is provided with a plurality of pointed protrusions, and the pointed protrusions are distributed around the guide pin outlet. The friction force between the femur anti-skid contact plate and the lateral cortex of the femur can be increased, and the femur anti-skid contact plate is prevented from sliding on the surface of the femoral shaft.
As a further improvement of the invention, the femur anti-skid contact plate is provided with a plurality of fixing holes for temporarily fixing the femur anti-skid contact plate and the surface of the femur by thin kirschner wires. The femur anti-slip contact plate and the surface of the femur are temporarily fixed by the thin kirschner wire, so that the femur anti-slip contact plate can be prevented from sliding on the surface of the femur shaft in an auxiliary manner.
As a further improvement of the invention, the guide pin outlets and the sharp-tooth protrusions distributed around the guide pin outlets are distributed in a rectangular array, and the fixing holes are distributed on three sides of the rectangular array and are alternately distributed with the sharp-tooth protrusions on the three sides. Can improve the anti-skid effect and is beneficial to the guide pin to be put in quickly and accurately.
As a further improvement of the invention, the guide pin outlet is located at the center line position of the rectangular array, the fixing holes are distributed at two sides of the center line of the rectangular array, and the number of the fixing holes at the two sides is not equal. The temporary fixing effect can be improved.
As a further improvement of the invention, the fixing holes at two sides of the central line are arranged from near to far relative to the guide pin outlet, and the fixing hole closest to the guide pin outlet in the fixing holes with a larger number and the fixing hole farthest from the guide pin outlet in the fixing holes with a smaller number are symmetrical along the central line. The temporary fixing effect can be improved.
As a further improvement of the present invention, the rectangular array has three columns and five rows, and the guide pin outlets are located in the middle column and occupy two of the middle rows; the number of the fixing holes is five, three fixing holes are positioned on one side of the central line, and the other two fixing holes are positioned on the other side of the central line. The anti-slip effect and the temporary fixing effect can be improved.
As a further improvement of the invention, the femur anti-skid contact plate is an arc-shaped plate which is adaptive to the shape of the femur, the sharp-tooth protrusions are positioned on the concave arc surface of the arc-shaped plate, and the guide handle is connected with one end of the arc-shaped plate and the convex arc surface of the arc-shaped plate. The arc design is more consistent with the shape of the femur, and the dislocation is less prone to displacement when the needle is placed.
As a further improvement of the invention, the distance between the guide pin outlet and one end of the arc-shaped plate connected with the guide handle is smaller than the distance between the guide pin outlet and the other opposite end of the arc-shaped plate, and the guide pin outlet is 2cm away from the other opposite end of the arc-shaped plate, and five fixing holes are distributed towards the other opposite end of the arc-shaped plate. When the upper end edge of the femur anti-skid contact plate is positioned on the lower edge plane of the femur lesser trochanter, the guide pin placing position is just positioned 4-5cm away from the lower edge of the highest point of the outer side of the greater trochanter, and the guide pin placing position is easier to master.
As a further improvement of the invention, the femur anti-skid contact plate has a length of 3.5cm, a width of 2.5cm, a thickness of 0.35cm, a radian diameter of 3.5cm, a base diameter of the sharp-tooth protrusion of 0.2cm, and a diameter of the fixing hole of 1.6 mm; the holding body is a rounded cuboid with the length of 10cm, the height of 3.5cm and the width of 4cm, and the guide pin inlet is positioned at one corner position in the height direction of the holding body; the guide handle is a cylindrical handle with the length of 13cm and the outer diameter of 1.0cm, the diameter of the guide pin channel is 0.25cm, the lower end of the guide handle is connected with the top surface of the round-angle cuboid, a reinforcing rib is arranged at the joint, the upper end of the guide handle is connected with the lower end edge and the convex arc surface of the femur anti-skid contact plate, a reinforcing rib is also arranged at the joint, and the other opposite end of the femur anti-skid contact plate is the upper end edge of the femur anti-skid contact plate; the guide pin inlet and the guide pin outlet are both of an elliptical structure. The size of the femur anti-skid contact plate is designed to be matched with the femoral shaft conveniently; the size of the holding body is designed to be convenient for holding and operating by one hand; the size of the guide handle and the elliptical design of the guide pin inlet and the guide pin outlet are convenient for the smooth insertion of the guide pin; the design of the reinforcing ribs increases the strength.
Compared with the prior art, the femoral neck fracture support screw guider has the following beneficial effects:
(1) the internal fixation treatment for femoral neck fracture is simple and convenient to operate, has superior performance, can enable the guide pin to be smoothly and accurately implanted, reduces the times of needle implantation compared with the implantation under simple fluoroscopy, and effectively shortens the operation time and the learning curve of an operator; the X-ray fluoroscopy times in the operation are reduced, so that the iatrogenic radiation injury is reduced; avoiding the mechanical weak point of the lateral cortex of the femur caused by the multiple insertion of the guide pin, and further causing the loosening and the invalidation of the guide pin after the insertion and even the fracture of the femoral shaft.
(2) The most key large-angle supporting screw (namely, the maximum-angle guide pin) at the bottom in the F-shaped screw technology can be quickly, minimally invasively and accurately placed. The auxiliary device can achieve the best angle (150 degrees between the right position and the femoral shaft and 15 degrees between the lateral position and the femoral neck) after the support screw is placed, thereby achieving the best biomechanical fixing effect.
The invention will become more apparent from the following description when taken in conjunction with the accompanying drawings, which illustrate embodiments of the invention.
Drawings
FIG. 1 is a schematic view of 3 hollow nails after fracture failure of femoral neck fixation in a direction parallel to the femoral neck in a reversed Chinese character 'pin' manner.
FIG. 2 is a schematic view of an "F" type hollow nail used for the successful internal fixation of the femoral neck in an orthostatic X-ray.
FIG. 3 is a schematic side X-ray view of the successful internal fixation of the femoral neck by the "F" type cannulated nail.
Fig. 4 is a perspective view of two guide bodies.
Fig. 5 is a perspective view of one of the guide bodies.
Fig. 6 is a left side view of the guide body shown in fig. 5.
Fig. 7 is a front view of the guide body shown in fig. 5.
Figure 8 is a cross-sectional view of the guide body of figure 7 at position a-a.
Fig. 9 is a rear view of the guide body of fig. 5.
Fig. 10 is a top view of the guide body of fig. 5.
Fig. 11 is a view showing a state of use of the femoral neck fracture support screw guide.
FIG. 12 is a schematic diagram of an X-piece at the positive position after the insertion of the guide pin shown in FIG. 11.
FIG. 13 is a schematic diagram of a guide pin placing back position X sheet shown in FIG. 11, wherein A denotes the front, P denotes the back, and the hollow pin guide pin placing direction is from the front to the back.
Description of the background art reference numerals: hollow nail a and support screw b.
The invention is illustrated by the reference numerals: the femoral bone anti-skid device comprises a holding body 1, a guide pin inlet 11, a guide handle 2, a guide pin channel 21, a first reinforcing rib 22, a femoral bone anti-skid contact plate 3, a second reinforcing rib 31, a guide pin outlet 32, a sharp tooth protrusion 33, a fixing hole 34, a small rotor 100a, a large rotor 100b, a femoral shaft 100c, a femoral neck 100d and a hollow nail guide pin 200.
Detailed Description
Embodiments of the present invention will now be described with reference to the drawings, wherein like element numerals represent like elements.
Referring to fig. 4 to 13, the femoral neck fracture support screw guide includes two guide bodies which are bilaterally symmetrical, are made of resin or stainless steel, and can be selected according to the left or right leg of the fracture. Each of the guide bodies includes a grip body 1, a guide shank 2, and a femoral anti-slip contact plate 3 integrally connected.
The holding body 1 is a round-corner cuboid with the length of 10cm, the height of 3.5cm and the width of 4 cm. The holding body 1 is provided with a guide pin inlet 11, and the guide pin inlet 11 is positioned at one corner position in the height direction of the holding body 1. The guide pin inlet 11 is an elliptical structure.
The guide handle 2 is a cylindrical handle with the length of 13cm and the outer diameter of 1.0cm, a guide needle channel 21 is arranged in the guide handle 2, and the diameter of the guide needle channel 21 is 0.25 cm. The lower extreme of direction handle 2 is connected and has strengthening rib 22 at the junction with the top surface of fillet cuboid, increases the intensity of junction for direction handle 2 is stably connected with the holding body 1.
The femur anti-skid contact plate 3 is an arc-shaped plate which is matched with the shape of a femur, has the length of 3.5cm, the width of 2.5cm, the thickness of 0.35cm and the radian diameter of 3.5cm, and can be jointed with the outer side of the near end of the femoral shaft 100 c. The lower end edge of the femur anti-skid contact plate 3 and the convex arc surface of the femur anti-skid contact plate 3 are connected with the upper end of the guide handle 2, and a reinforcing rib II 31 is arranged at the joint, so that the strength of the joint is increased, and the guide handle 2 is stably connected with the femur anti-skid contact plate 3. The concave arc surface of the femur anti-skid contact plate 3 is provided with a guide pin outlet 32, the guide pin outlet 32 is of an oval structure, the long axis direction of the oval guide pin outlet 32 is consistent with the length direction of the femur anti-skid contact plate 3, and the guide pin inlet 11, the guide pin channel 21 and the guide pin outlet 32 are communicated linearly. The distance between the guide pin outlet 32 and the lower end edge of the femur anti-skid contact plate 3 is smaller than the distance between the guide pin outlet 32 and the upper end edge of the femur anti-skid contact plate 3, and the distance between the guide pin outlet 32 and the upper end edge of the femur anti-skid contact plate 3 is 2cm, when the upper end edge of the femur anti-skid contact plate 3 is located on the plane of the lower edge of the femur lesser trochanter 100a, the insertion position of the guide pin extending from the guide pin outlet 32 at the femur is just located at the position 4-5cm away from the lower edge of the highest point of the outer side of the greater trochanter. The angle of the femur anti-skid contact plate 3 on the coronal plane is 30 degrees relative to the guide handle 2, and is closer to the angle of the femur neck load bearing trabecula (the coronal plane is a section obtained by longitudinally cutting the human body into the front part and the rear part along the long axis of the human body from the left and right directions, the vertical plane is a coronal plane as shown in fig. 5.) the femoral sliding contact plate 3 is angled at 15 deg. relative to the guide shaft 2 in the sagittal plane, so that the angle between the guide pin outlet 32 and the central axis of the length direction of the femur anti-skid contact plate 3 is also 15 degrees, can ensure that the guide pin (namely the supporting screw) is arranged from the front lower part of the femur to the back upper part of the femoral head, the tip of the guide pin is close to the cortical bone at the back of the femoral neck and is positioned in the back lower quadrant of the femoral head (the sagittal plane is a dissection plane which divides the human body into a left plane and a right plane, the plane parallel to the plane is also the sagittal plane, and the plane vertical to the guide handle in the front and back direction in figure 6 is the sagittal plane).
The concave arc surface of the femur anti-skid contact plate 3 is a contact surface, and the contact surface is provided with a plurality of sharp-tooth bulges 33, so that the friction force between the femur anti-skid contact plate 3 and the outer cortex of the femur can be increased, and the femur anti-skid contact plate 3 is prevented from sliding on the surface of the femur shaft 100. The base diameter of the tine projections 33, i.e. the diameter of the position where the tine projections 33 meet the femoral anti-slip contact plate 3, is 0.2 cm. The pointed protrusions 33 are distributed around the guide pin outlets 32 and are distributed in a rectangular array with the guide pin outlets 32, so that the friction force of the contact positions of the pointed protrusions 33 and the lateral cortex of the femur is more uniform, and the sliding of the femur anti-sliding contact plate 3 on the surface of the femoral shaft 100 is effectively avoided. The guide pin outlets 32 are located at the center line position of a rectangular array having three columns and five rows, the guide pin outlets 32 being located in the middle column and occupying the lower two rows of the middle row.
The femur anti-skid contact plate 3 is provided with a plurality of fixing holes 34 for temporarily fixing the femur anti-skid contact plate 3 and the surface of the femur by thin kirschner wires. The fixing holes 34 are distributed on three sides of the rectangular array and are alternately distributed with the sharp-tooth bulges 33 on the three sides, so that the femur anti-skid contact plate is temporarily fixed from the three sides, the anti-skid effect is improved, and the guide pin is conveniently and accurately placed. The fixing holes 34 are distributed on two sides of the center line of the rectangular array, and the number of the fixing holes 34 on the two sides is not equal. The fixing holes 34 on both sides of the central line are distributed from the proximal to the distal direction toward the upper end edge of the femoral anti-skid contact plate 3 with respect to the guide pin outlet 32, and the fixing hole 34 closest to the guide pin outlet 32 among the larger number of fixing holes 34 and the fixing hole 34 farthest from the guide pin outlet 32 among the smaller number of fixing holes 34 are symmetrical along the central line. Specifically, the number of the fixing holes 34 is five, three fixing holes 34 are located on one side of the center line, the other two fixing holes 34 are located on the other side of the center line, and the fixing hole 34 close to the needle guide outlet 32 of the two fixing holes 34 corresponds to the upper end of the needle guide outlet 32.
The using method comprises the following steps: the femur anti-skid contact plate 3 of the guider main body is arranged on the surface of the proximal lateral cortex of the femur, the sharp-tooth protrusions 33 are in close contact with the lateral cortex of the femur, the upper edge of the femur anti-skid contact plate 3 is flush with the lower edge of the lesser trochanter 100a under fluoroscopy, a thin Kirschner wire is firstly fixed to the femur by penetrating through the fixing hole 34 to temporarily fix the femur anti-skid contact plate 3 to the surface of the femur, and then the hollow nail guide pin 200 (namely, the support screw with the lowest large angle) is placed into the hollow nail guide pin through the guide pin channel 21 by using an electric drill, so that the hollow nail guide pin can be placed. Because the thighbone anti-skidding contact plate 3 has 30 contained angles relative to the guide handle 2 on the coronal plane, the thighbone anti-skidding contact plate 3 has 15 degrees relative to the guide handle 2 on the sagittal plane, and the guide pin inlet 11, the guide pin channel 21 and the guide pin outlet 32 are communicated in a straight line, so that the hollow nail guide pin 200 can be quickly, accurately and smoothly placed into the femoral shaft 100c and the thighbone neck 100d through the guide pin inlet 11, the guide pin channel 21 and the guide pin outlet 32, the operation is simple and convenient, the performance is superior, and the application effect is prominent: compared with the simple perspective implantation, the method reduces the times of needle implantation, effectively shortens the operation time and effectively shortens the learning curve of the operator; secondly, the X-ray fluoroscopy times in the operation are reduced, so that the iatrogenic radiation injury is reduced; avoids the fracture caused by the weak point of mechanics caused by the multiple insertion of the guide pin into the lateral cortex of the femur. By applying the guider to the currently recognized optimal internal fixation mode of femoral neck fracture, namely an F-shaped hollow nail insertion treatment scheme, the optimal angle (the included angle between the righting position and the femoral shaft 100c is 150 degrees (as shown in figure 12) and the included angle between the lateral position and the femoral neck 100d is 15 degrees (as shown in figure 13)) of the hollow nail guide pin 200 after insertion can be achieved, so that the optimal biomechanical fixation effect is achieved.
The present invention has been described in connection with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, and is intended to cover various modifications, equivalent combinations, which are made in accordance with the spirit of the present invention.
Claims (10)
1. The utility model provides a femoral neck fracture support screw director which characterized in that: including bilateral symmetry's two director main parts, each the director main part is including holding the body, direction handle and thighbone anti-skidding contact plate, has the guide pin entry on holding the body, has the guide pin export on the thighbone anti-skidding contact plate, has the guide pin passageway in the direction handle, and guide pin entry, guide pin passageway and guide pin export straight line link up, thighbone anti-skidding contact plate has 30 contained angles for the direction handle on the coronal plane, and thighbone anti-skidding contact plate has 15 angles for the direction handle on the sagittal plane.
2. A femoral neck fracture support screw guide as in claim 1, wherein: the contact surface of the femur anti-skid contact plate is provided with a plurality of sharp-tooth bulges, and the sharp-tooth bulges are distributed around the guide pin outlet.
3. A femoral neck fracture support screw guide as in claim 2, wherein: the femur anti-skid contact plate is provided with a plurality of fixing holes for temporarily fixing the femur anti-skid contact plate and the surface of the femur by thin kirschner wires.
4. A femoral neck fracture support screw guide as in claim 3, wherein: the guide pin outlet and the sharp-tooth protrusions distributed around the guide pin outlet are distributed in a rectangular array, and the fixing holes are distributed on three sides of the rectangular array and are alternately distributed with the sharp-tooth protrusions on the three sides.
5. A femoral neck fracture support screw guide as in claim 4, wherein: the guide pin outlet is positioned at the center line of the rectangular array, the fixing holes are distributed on two sides of the center line of the rectangular array, and the number of the fixing holes on the two sides is not equal.
6. A femoral neck fracture support screw guide as in claim 5, wherein: the fixing holes positioned at two sides of the central line are arranged from near to far relative to the guide pin outlet, and the fixing hole closest to the guide pin outlet in the fixing holes with a large number and the fixing hole farthest from the guide pin outlet in the fixing holes with a small number are symmetrical along the central line.
7. A femoral neck fracture support screw guide as in claim 6, wherein: the rectangular array is provided with three rows and five columns, and the guide pin outlets are positioned in the middle row and occupy two of the middle rows; the number of the fixing holes is five, three fixing holes are positioned on one side of the central line, and the other two fixing holes are positioned on the other side of the central line.
8. A femoral neck fracture support screw guide as in claim 7, wherein: the femur anti-slip contact plate is an arc-shaped plate which is matched with the shape of femur, the sharp tooth bulges are positioned on the concave arc surface of the arc-shaped plate, and the guide handle is connected with one end of the arc-shaped plate and the convex arc surface of the arc-shaped plate.
9. A femoral neck fracture support screw guide as in claim 8, wherein: the distance between the guide pin outlet and one end of the arc-shaped plate connected with the guide handle is smaller than the distance between the guide pin outlet and the other opposite end of the arc-shaped plate, in addition, the distance between the guide pin outlet and the other opposite end of the arc-shaped plate is 2cm, and five fixing holes are distributed towards the other opposite end of the arc-shaped plate.
10. A femoral neck fracture support screw guide as in claim 9, wherein: the length of the femur anti-skid contact plate is 3.5cm, the width is 2.5cm, the thickness is 0.35cm, the radian diameter is 3.5cm, the diameter of the base of the sharp tooth protrusion is 0.2cm, and the diameter of the fixing hole is 1.6 mm; the holding body is a rounded cuboid with the length of 10cm, the height of 3.5cm and the width of 4cm, and the guide pin inlet is positioned at one corner position in the height direction of the holding body; the guide handle is a cylindrical handle with the length of 13cm and the outer diameter of 1.0cm, the diameter of the guide pin channel is 0.25cm, the lower end of the guide handle is connected with the top surface of the round-angle cuboid, a reinforcing rib is arranged at the joint, the upper end of the guide handle is connected with the lower end edge and the convex arc surface of the femur anti-skid contact plate, a reinforcing rib is also arranged at the joint, and the other opposite end of the femur anti-skid contact plate is the upper end edge of the femur anti-skid contact plate; the guide pin inlet and the guide pin outlet are both of an elliptical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010388233.9A CN111529039A (en) | 2020-05-09 | 2020-05-09 | Femoral neck fracture support screw guider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010388233.9A CN111529039A (en) | 2020-05-09 | 2020-05-09 | Femoral neck fracture support screw guider |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111529039A true CN111529039A (en) | 2020-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010388233.9A Pending CN111529039A (en) | 2020-05-09 | 2020-05-09 | Femoral neck fracture support screw guider |
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| CN (1) | CN111529039A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114869442A (en) * | 2022-04-24 | 2022-08-09 | 中南大学湘雅医院 | Screw guide for femoral neck fracture open reduction and use method thereof |
-
2020
- 2020-05-09 CN CN202010388233.9A patent/CN111529039A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114869442A (en) * | 2022-04-24 | 2022-08-09 | 中南大学湘雅医院 | Screw guide for femoral neck fracture open reduction and use method thereof |
| CN114869442B (en) * | 2022-04-24 | 2024-04-26 | 中南大学湘雅医院 | Screw guide for open reduction of femoral neck fracture and method of use thereof |
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