CN210408583U - 3D prints screw of thighbone neck fracture hollow nail internal fixation and puts into baffle - Google Patents
3D prints screw of thighbone neck fracture hollow nail internal fixation and puts into baffle Download PDFInfo
- Publication number
- CN210408583U CN210408583U CN201920762219.3U CN201920762219U CN210408583U CN 210408583 U CN210408583 U CN 210408583U CN 201920762219 U CN201920762219 U CN 201920762219U CN 210408583 U CN210408583 U CN 210408583U
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- Prior art keywords
- femoral neck
- baffle
- screw
- guide plate
- nail
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 210000001694 thigh bone Anatomy 0.000 title claims description 14
- 208000020089 femoral neck fracture Diseases 0.000 claims abstract description 44
- 230000007246 mechanism Effects 0.000 claims abstract description 36
- 239000007787 solid Substances 0.000 claims abstract description 16
- 210000002436 femur neck Anatomy 0.000 claims abstract description 15
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- 238000010030 laminating Methods 0.000 claims abstract description 5
- 238000003466 welding Methods 0.000 claims abstract description 3
- 208000010392 Bone Fractures Diseases 0.000 claims description 27
- 206010017076 Fracture Diseases 0.000 claims description 27
- 238000010146 3D printing Methods 0.000 claims description 13
- 238000013461 design Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 208000001132 Osteoporosis Diseases 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000003414 extremity Anatomy 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 206010014080 Ecchymosis Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000004013 groin Anatomy 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 210000004394 hip joint Anatomy 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
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- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
The utility model discloses a 3D prints baffle is put into to screw of hollow nail internal fixation of femoral neck fracture, including baffle and baffle fixing device, the baffle passes through 3D and prints the preparation, with the laminating of femoral neck fracture end to have and put the nail hole, the baffle is fixed in femoral neck fracture through baffle fixing device centre gripping and puts the nail end, baffle fixing device includes two semi-circular solid fixed rings, and semi-circular solid fixed ring has the stiff end and the bolt fastening of screw to be in femoral neck periphery through both ends area, and the welding of one of them semi-circular solid fixed ring outside arc top has the internal thread to link up the seat, and the internal thread links up the seat and goes up the meshing connection lead screw, installs lock nut on the lead screw, and two at least angle adjustment mechanism are connected to the upper end of lead screw. The accurate placement of the screw in the hollow nail internal fixation for femoral neck fracture is facilitated; the structure design is reasonable, the internal fixation of the hollow nail for femoral neck fracture is accurate, and the hollow nail is suitable for being popularized and used in medical institutions.
Description
Technical Field
The utility model relates to an orthopedics screw puts into technical field, and specific femoral neck fracture hollow nail internal fixation's that relates to a 3D prints screw puts into baffle.
Background
A femoral neck fracture refers to a more detailed fracture from the lower part of the femoral head to the tuberosity, and is a common fracture. Generally, the patient is caused by falling, and when the patient falls, the affected limb is twisted, and violence is transmitted to the neck of the femur to cause fracture. Also seen in old osteoporosis, the trabecular bone of the femoral neck is weak, and the fracture of the trabecular bone caused by slight external force can be caused. After the fracture of the neck of femur, the affected limb presents with deformity of shortening, adduction, external rotation, and flexion, and the inguinal ligament or the tuberosity part has lumps and ecchymosis. The physical examination shows local tenderness, obvious tenderness at the midpoint of the groin, positive tapping pain along the longitudinal axis and aggravated pain of the hip joint caused by passive movement. The hollow nail internal fixation is suitable for various fresh femoral neck fractures, old femoral neck fractures and patients without serious osteoporosis of femoral head neck. The surgical instrument has reasonable design. The three hollow nails are parallel and screwed in a triangle shape through the accurate positioning of the guider, the stress of the fracture surface is uniform and consistent, and the fracture healing is facilitated. When 3 hollow nails are screwed, the fracture surface can obtain enough pressurization and stability. When the fracture end absorbs after operation to generate a gap, the thread-free part of the nail can slide outwards to eliminate the gap and keep the fracture end in contact.
In the hollow nail internal fixation of femoral neck fracture, the hollow screw is put into the operation to be successful or not, so the guide positioning of the hollow screw is the key of the hollow nail internal fixation of femoral neck fracture, the hollow screw in the prior art is lack of a special positioning and auxiliary device, the traditional method is to put more hollow screws or add steel plates, the existing positioner is only a pure guide plate, but the guide plate can only be arranged at the fracture end, if the fixation and the fracture end are required to be fixed, the screw needs to be driven in advance to realize, and a plurality of inconveniences exist in the actual use; meanwhile, when the guide plate is used for positioning, the position of the guide plate is easy to relatively move, so that the hollow screw is not accurately placed.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model provides a 3D printed screw-inserting guide plate for the internal fixation of the hollow nail for femoral neck fracture, which comprises an auxiliary device and a guide plate, and is beneficial to the accurate insertion of the screw for the internal fixation of the hollow nail for femoral neck fracture; the structure design is reasonable, the internal fixation of the hollow nail for femoral neck fracture is accurate, and the hollow nail is suitable for being popularized and used in medical institutions.
In order to realize the technical purpose, the technical effect is achieved, the utility model discloses a realize through following technical scheme:
the utility model provides a 3D prints baffle is put into to femoral neck fracture hollow nail internal fixation's screw, includes baffle and baffle fixing device, the baffle prints the preparation through 3D, puts the laminating of nail end with femoral neck fracture to have and put the nail hole, the baffle is fixed in femoral neck fracture through baffle fixing device centre gripping and puts the nail end, baffle fixing device includes two semi-circular solid fixed rings, and semi-circular solid fixed ring has the stiff end and the bolt fastening of screw to be in femoral neck periphery through both ends, and one of them semi-circular solid fixed ring outside arc top welding has the internal thread to link up the seat, and the internal thread links up the seat and goes up the meshing connecting screw, installs lock nut on the lead screw, and two at least angle adjustment mechanism are connected to the upper end of lead screw, and end.
Furthermore, the guide plate is manufactured by 3D printing after parameters of the fracture end of the femoral neck are obtained and the guide plate is placed in a nailing path.
Furthermore, the upper end of the screw rod is provided with adjusting rods which are connected through an angle adjusting mechanism, and a locking bolt is arranged in the center of the angle adjusting mechanism to lock the angles of the adjusting rods arranged on the two sides of the angle adjusting mechanism;
the adjusting range of the angle adjusting mechanism is 0-180 degrees.
Furthermore, the angle adjusting mechanism is a disc which can rotate relatively and is connected through a locking bolt, and lines are arranged on the mutual contact surfaces of the discs.
Furthermore, a clamping device is installed at the rear end of the angle adjusting mechanism, and the clamping device can adjust and lock the upper end or the lower end of the clamping guide plate and fix the clamping guide plate on the periphery of the femoral neck.
Furthermore, the width of the semicircular fixing ring is 2-4cm, a guide ring groove with the length of 4-6cm is installed on the semicircular fixing ring with the internal thread connecting seat, and the radian of the guide ring groove is half of that of the semicircular fixing ring.
Furthermore, a screw rod in meshed connection is installed on the internal thread connecting seat on the semicircular fixing ring, and a locking nut is installed at the end of the screw rod to lock and adjust the relative angle after the screw rod rotates.
The utility model discloses a theory of operation does: when the hollow nail internal fixation of femoral neck fracture is used for nail placement, a guide plate is manufactured by 3D printing according to parameters of a femoral neck fracture end and a nail placement approach, the 3D printing technology belongs to the prior art, fracture information is obtained through imaging, and the specification and parameters of the guide plate are preset according to a generated treatment scheme, so that 3D printing is performed; the guide plate is not easy to fix in the nail placing process, and the guide plate is placed at the nail placing end through the guide plate fixing device; the specific working principle is as follows: the two semicircular fixing rings are fixed on the femoral neck, then the guide plate is clamped by the clamping device through the axial angle and the angle adjusting mechanism of the adjusting screw rod and is arranged outside the nail placing end of the femoral neck fracture internal fixation, then the angle adjusting mechanism and the screw rod are locked, and the guide plate is fixed and then is placed with nails through the assistance of the guide plate fixing device.
The utility model has the advantages that: the utility model discloses 3D printing's thighbone neck fracture hollow nail internal fixation art's screw puts into baffle, including baffle and baffle fixing device, the baffle is through 3D printing preparation, laminates with the nail end outside of putting of thighbone neck fracture internal fixation art to have and put the nail hole, and the baffle is fixed in thighbone neck fracture nail end of putting through baffle fixing device centre gripping, through fixing two semi-circular solid fixed rings on the thighbone neck, later through adjusting lead screw's axial angle and angle adjustment mechanism, through the nail end outside of putting of clamping device centre gripping baffle in thighbone neck fracture internal fixation art, later lock angle adjustment mechanism and lead screw, fix the baffle through the assistance of baffle fixing device and put the nail after; firstly, a guide plate is manufactured by 3D printing according to parameters of a femoral neck fracture end and a nail-placing path, and the guide plate has higher accuracy; secondly, in the nail placing process, the guide plate is fixed at the nail placing end through the auxiliary action of the guide plate fixing device, so that the nail can be placed accurately; finally, the guide plate fixing device can be removed after 1 or 2 hollow screws are placed in the guide plate fixing device, and the guide plate fixing device can be repeatedly used; the structure design is reasonable, the internal fixation of the hollow nail for femoral neck fracture is accurate, and the hollow nail is suitable for being popularized and used in medical institutions.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of a screw insertion guide plate for a 3D-printed internal fixation of a hollow nail for fracture of femoral neck according to an embodiment of the present invention;
FIG. 2 is a schematic plane structure view of a screw placement guide plate for 3D printing hollow nail internal fixation for femoral neck fracture according to an embodiment of the present invention;
fig. 3 is a schematic structural view of the semicircular fixing ring according to the embodiment of the present invention;
fig. 4 is a schematic structural diagram of the semicircular fixing ring, the screw rod, the locking nut and the angle adjustment according to the embodiment of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1-guide plate, 2-guide plate fixing device, 3-semicircular fixing ring, 301-fixing end, 302-bolt, 303-screw hole, 304-guide ring groove, 4-internal thread joint seat, 5-screw rod, 501-adjusting rod, 6-locking nut, 7-angle adjusting mechanism and 8-clamping device.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Examples
As shown in fig. 1-4
The utility model provides a 3D prints baffle is put into to screw of hollow nail internal fixation of femoral neck fracture, includes baffle 1 and baffle fixing device 2, baffle 1 prints the preparation through 3D, puts the laminating of nail end with femoral neck fracture to have and put the nail hole, baffle 1 is fixed in femoral neck fracture through 2 centre grippings of baffle fixing device and puts the nail end, baffle fixing device 2 includes two semi-circular solid fixed rings 3, and semi-circular solid fixed ring 3 is fixed in femoral neck periphery through stiff end 301 and the bolt 302 of both ends area screw 303, and 3 outside arc tops of one of them semi-circular solid fixed ring weld have internal thread to link up seat 4, and internal thread links up seat 4 and goes up meshing connection lead screw 5, installs lock nut 6 on the lead screw 5, and two at least angle adjusting mechanism 7 are connected to the upper end of lead screw 5, 8 centre gripping baffle 1 of terminal installation clamping device.
The guide plate 1 is manufactured by 3D printing after parameters of the fracture end of the femoral neck are obtained and a nailing path is placed.
The upper end of the screw rod 5 is provided with adjusting rods 501, the adjusting rods 501 are connected through an angle adjusting mechanism 7, and a locking bolt is arranged in the center of the angle adjusting mechanism 7 to lock the angles of the adjusting rods 501 arranged on two sides of the angle adjusting mechanism 7;
the adjusting range of the angle adjusting mechanism 7 is 0-180 degrees.
The angle adjusting mechanism 7 is a disc which can rotate relatively and is connected through a locking bolt, and lines are arranged on the mutual contact surfaces of the discs.
The rear end of the angle adjusting mechanism 7 is provided with a clamping device 8, and the clamping device 8 can adjust and lock the upper end or the lower end of the clamping guide plate 1 and fix the upper end or the lower end on the periphery of the femoral neck.
The width of the semicircular fixing ring 3 is 2-4cm, a guide ring groove 304 with the length of 4-6cm is arranged on the semicircular fixing ring 3 with the internal thread connecting seat 4, and the radian of the guide ring groove 304 is half of that of the semicircular fixing ring 3.
And a screw rod 5 in meshed connection is arranged on an internal thread connecting seat 4 on the semicircular fixing ring 3, and a locking nut 6 is arranged at the end of the screw rod 5 to lock and adjust the relative angle after the screw rod 5 rotates.
The specific application of this embodiment is:
when the nail is placed in the femoral neck fracture hollow nail internal fixation operation, a guide plate is printed and manufactured in a 3D mode according to femoral neck fracture end parameters and a nail placing way, operation parameter modeling is obtained, and an operation is designed to be a common mode in modern medicine, the operation entering way and the nail placing information can be obtained more accurately by designing a three-dimensional operation model, then the guide plate for making the nail is manufactured by printing and manufacturing the guide plate in a 3D mode, accurate positioning can be carried out to a great extent, and the method is one of the common modes in modern medicine;
however, when the nail is placed in the femoral neck fracture hollow nail internal fixation surgery, the guide plate 1 is not easy to fix in the nail placing process, and the guide plate 1 is placed at the nail placing end through the guide plate fixing device 2; the specific working principle is as follows: the two semicircular fixing rings 3 are fixed on the femoral neck, then the guide plate 1 is clamped by the clamping device 8 and placed on the outer side of a nail placing end of the femoral neck fracture internal fixation through the axial angle of the adjusting screw rod 5 and the angle adjusting mechanism 7, then the angle adjusting mechanism 7 and the screw rod 5 are locked, and the guide plate 1 is fixed and then nailed through the guide plate fixing device 2;
the angle and the position of the nail placing hole in the guide plate 1 are determined by a designed fixing scheme and then are realized by a 3D printing technology, and the shape of the guide plate 1 and the specific structure of the nail placing hole are designed according to clinical practical conditions.
The specific operation mode and principle are as follows:
the utility model discloses 3D prints the screw of thighbone neck fracture hollow nail internal fixation art and puts the baffle, including baffle 1 and baffle fixing device 2, baffle 1 prints the preparation through 3D, and with the nail end laminating of thighbone neck fracture internal fixation art, and have the nail hole of putting, baffle 1 is fixed in thighbone neck fracture nail end of putting through baffle fixing device 2 centre gripping, through fixing two semi-circular solid fixed rings 3 on the thighbone neck, preoperatively, after the operator has made corresponding baffle 1, can fix two semi-circular solid fixed rings 3 in the periphery of thighbone neck fracture nail end downside, after fixing semi-circular solid fixed ring 3, lock by bolt 302 and stabilize it fixedly, the guide ring groove 304 cover of installation plays the effect of auxiliary fixation in thighbone neck periphery simultaneously;
then, the guide plate 1 is clamped by a clamping device 8 and placed on the outer side of the femoral neck fracture end through an axial angle and angle adjusting mechanism 7 of an adjusting screw rod 5, then the angle adjusting mechanism 7 and the screw rod 5 are locked, and the guide plate is fixed by a fixing device of the guide plate 1 and then nailed;
namely, the screw rod 5 can axially rotate in the internal thread joint seat 4, and the relative position of the screw rod 6 can be locked by a locking nut; the upper end of the screw rod 5 is provided with an adjusting rod 501, the adjusting rods 501 are connected through an angle adjusting mechanism 7, a locking bolt is arranged in the center of the angle adjusting mechanism 7 to lock the angle of the adjusting rods 501 arranged on two sides of the angle adjusting mechanism 7, under the action of the two angle adjusting mechanisms 7, a clamping device 8 arranged at the tail end clamps the upper end or the lower end of the guide plate 1 and can be stably arranged at the femoral neck fracture nail placing end, and then the angle adjusting mechanism 7 and the screw rod 5 are locked to stably arrange the guide plate 1 at the femoral neck fracture nail placing end for nail placing operation;
the utility model discloses the screw embedding guide plate for the 3D printing hollow nail internal fixation of femoral neck fracture, which is manufactured by 3D printing according to the parameters of the femoral neck fracture end and the embedding path, and has higher accuracy; secondly, in the nail placing process, the guide plate is fixed at the nail placing end through the auxiliary action of the guide plate fixing device, so that the nail can be placed accurately; finally, the guide plate fixing device can be removed after 1 or 2 hollow screws are placed in the guide plate fixing device, and the guide plate fixing device can be repeatedly used; the structure design is reasonable, the internal fixation of the hollow nail for femoral neck fracture is accurate, and the hollow nail is suitable for being popularized and used in medical institutions.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. The utility model provides a baffle is put into to screw of thighbone neck fracture hollow nail internal fixation art that 3D printed, its characterized in that: including baffle and baffle fixing device, the baffle passes through 3D and prints the preparation, puts the laminating of nail end with femoral neck fracture to have and put the nail hole, the baffle is fixed in femoral neck fracture through baffle fixing device centre gripping and puts the nail end, baffle fixing device includes two semi-circular solid fixed rings, and semi-circular solid fixed ring has the stiff end and the bolt fastening of screw through both ends area to be in femoral neck periphery, and the welding of one of them semi-circular solid fixed ring outside arc top has the internal thread to link up the seat, and the internal thread links up the seat and goes up the meshing and connect the lead screw, installs lock nut on the lead screw, and two at least angle adjustment mechanism are connected to the upper end of lead.
2. The screw placement guide plate for 3D-printed femoral neck fracture cannulated nail internal fixation of claim 1, wherein: the guide plate is manufactured by 3D printing after parameters of the fracture end of the femoral neck are obtained and the guide plate is placed in a nailing path.
3. The screw placement guide plate for 3D-printed femoral neck fracture cannulated nail internal fixation of claim 1, wherein: the upper end of the screw rod is provided with adjusting rods which are connected through an angle adjusting mechanism, and a locking bolt is arranged in the center of the angle adjusting mechanism to lock the angles of the adjusting rods arranged on the two sides of the angle adjusting mechanism;
the adjusting range of the angle adjusting mechanism is 0-180 degrees.
4. The screw placement guide plate for 3D-printed femoral neck fracture cannulated nail internal fixation of claim 1, wherein: the angle adjusting mechanism is a disc which can rotate relatively and is connected through a locking bolt, and lines are arranged on the mutual contact surfaces of the discs.
5. The screw placement guide plate for 3D-printed femoral neck fracture cannulated nail internal fixation of claim 1, wherein: the rear end of the angle adjusting mechanism is provided with a clamping device, and the clamping device can adjust and lock the upper end or the lower end of the clamping guide plate and fix the upper end or the lower end of the clamping guide plate on the periphery of the femoral neck.
6. The screw placement guide plate for 3D-printed femoral neck fracture cannulated nail internal fixation of claim 1, wherein: the width of the semicircular fixing ring is 2-4cm, a guide ring groove with the length of 4-6cm is installed on the semicircular fixing ring with the internal thread connecting seat, and the radian of the guide ring groove is half of that of the semicircular fixing ring.
7. The screw placement guide plate for 3D-printed femoral neck fracture cannulated nail internal fixation of claim 1, wherein: and a screw rod in meshed connection is arranged on the internal thread connecting seat on the semicircular fixing ring, and a locking nut is arranged at the end of the screw rod to lock and adjust the relative angle after the screw rod rotates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920762219.3U CN210408583U (en) | 2019-05-25 | 2019-05-25 | 3D prints screw of thighbone neck fracture hollow nail internal fixation and puts into baffle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920762219.3U CN210408583U (en) | 2019-05-25 | 2019-05-25 | 3D prints screw of thighbone neck fracture hollow nail internal fixation and puts into baffle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210408583U true CN210408583U (en) | 2020-04-28 |
Family
ID=70372682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920762219.3U Expired - Fee Related CN210408583U (en) | 2019-05-25 | 2019-05-25 | 3D prints screw of thighbone neck fracture hollow nail internal fixation and puts into baffle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210408583U (en) |
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2019
- 2019-05-25 CN CN201920762219.3U patent/CN210408583U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200428 |