CN220655655U - Assembled intramedullary nail plate system for treating proximal femur fracture - Google Patents

Abstract

The utility model discloses a combined intramedullary nail plate system for treating proximal femur fracture, which comprises a main nail, a head nail, a supporting nail, a locking nail and a locking nail plate system, wherein the main nail is divided into a proximal end part, a supporting part and a distal end part, the head nail consists of a goose head nail, a pressurizing threaded sleeve and a locking tail cap, the supporting nail passes through a pore canal of the supporting part to prop against the position under a small tuberosity to play the role of supporting an inner wall, the locking nail is implanted into a pore canal of a distal locking part from the locking pore canal of an outer locking plate to be locked on the inner cortex of femur, the outer locking plate is attached to the outer side of femur and is locked with the head nail, the supporting nail and the locking nail into a whole through screw threads of the tail nail and locking empty threads, and screw holes are reserved at the proximal end of the locking nail, so that screws can be driven in order to fix the cortex of the outer femur fracture. The utility model has reasonable structure, adopts the principle of lever stabilization under the proximal outer triangle, and forms a splint system with the outer steel plate, thereby increasing the stability and reducing the symptoms of postoperative fracture collapse, hip varus, head and neck cutting and the like.

Description

Assembled intramedullary nail plate system for treating proximal femur fracture

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a combined intramedullary nail plate system for treating proximal femur fracture.

Background

With the aging of population in China, the number of patients with proximal femur fracture is increased year by year, the fracture is called the last fracture, the operation is performed as early as possible, and the early-stage activities of getting out of bed can effectively prevent complications of the aged patients caused by long-term bedridden fracture, so that the superiority of intramedullary nail fixation is more and more obvious. Thus, the intramedullary nail is closely related to the orthopedic treatment effect.

Along with the wide use of the intramedullary nail, the defects of the intramedullary nail are also highlighted gradually, and the most frequently occurring defects are incomplete inner and outer side walls, irrecoverability and poor fixing effect, and serious complications such as hip inversion, head and neck cutting, intramedullary nail fracture and the like occur.

The intramedullary nail is implanted into a plurality of intramedullary nails with thicker diameter after the marrow expansion to increase the stability when the proximal femur fracture, but the marrow expansion damages the blood circulation of the endosteal, which is the common disease of the current marrow expansion intramedullary nail

Therefore, there is a need to design a fixation system for treating proximal femur fractures that solves the technical problems of the prior art.

Disclosure of Invention

The present utility model is directed to a modular intramedullary nail plate system for treating proximal femur fractures, which solves the problems set forth in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a subassembly formula intramedullary nail board system for proximal femur fracture, it includes main nail, head nail, supporting nail, locking nail and locking plate, main nail divide into proximal end portion, supporting part, distal end portion, the head nail comprises gooseneck, pressurization screw sleeve pipe, locking tail cap, the supporting nail supports under the small tuberosity through the pore of supporting part, play the effect of supporting the inner wall, the locking nail implants the pore lock of distal end locking part on the inside cortex of femur from the locking pore of outside locking plate, outside locking plate is attached to the femur outside, lock with head nail, supporting nail and locking nail through the screw thread of nail tail screw and locking hole and become an organic whole, form the complete system of upper triangle lower lever, its proximal end leaves the screw hole, can drive into the screw, in order to fix the cortex of femoral outside fracture, and increase the holding power to the fracture, and can effectively prevent the femoral head rotation, increase the anti-rotation ability of head nail;

the utility model is used for the treatment of proximal femur fracture, its is rational in infrastructure, and the head nail comprises gooseneck nail, pressurization screw sleeve pipe, locking tail cap, and the gooseneck nail top is the sphere body type structure, can effectually evenly distributed compressive stress on the top surface, reducible head and neck cutting's risk. And the intramedullary blood circulation is protected without expanding marrow during implantation. The intramedullary nail forms a splinting system with the outer steel plate, thereby increasing stability. The head nails can be locked on the outer steel plate system to form a lever system taking the main nails as fulcrums, so that the occurrence rate of hip varus can be effectively reduced, the occurrence rate of main nail fracture caused by the concentration of inner compressive stress can be reduced, the outer side wall of the reconstruction damage can be established by the outer nail locking plate system, the holding force on fracture can be increased by placing longer screws, the rotation of the femoral head can be effectively prevented, and the anti-rotation capacity of the head nails can be increased; is convenient for early recovery of patients

Preferably, the pore passage of the head nail at the proximal end part of the main nail is in an elliptical shape, which is beneficial to adjusting the front dip angle.

Preferably, the tail end of the main nail is provided with a ring-shaped groove and an outer sector-shaped notch, can be connected with the outer nail locking plate system into a whole, and can allow the forward inclination of the locking plate system to be finely adjusted.

Preferably, the outside locking plate system is lockable with the threads of the locking hole by means of respective tail threads.

Preferably, the head nail consists of a goose head nail and a pressurizing threaded sleeve, the top end of the goose head nail is of a sphere structure, two side wings and the lower part of the goose head nail are provided with spiral grooves, the middle section of the goose head nail is provided with threads, and the tail part of the goose head nail is provided with a screw hole.

Preferably, the pressurizing threaded sleeve of the head nail is internally provided with threads which are matched with the threads of the middle section of the goose head nail, the outer surface of the proximal end is provided with threads, the diameter of the threads is 2mm larger than that of the goose head nail, the tail end is an external hexagon, and the tail end of the head nail is flush with the tail part of the goose head nail after pressurization is finished.

Preferably, the screw holes at the tail of the goose head nails can be placed with special locking screws to fix the goose head nails on the outside locking nail plate system.

Preferably, the screw threads of the support nail and the locking nail are divided into three parts, the inner part is fixed on the inner cortex of the small tuberosity to play a role in supporting the inner cortex of the proximal end, the outer part is fixed on the outer cortex, and the tail screw threads are fixed on the locking nail plate system.

Preferably, two rows of screw holes are reserved at the proximal end of the outer locking plate system, and the split outer cortex can be fixed by screws or the long nails can be arranged to strengthen fracture fixation.

Preferably, the implantation is performed without reaming to preserve intramedullary blood.

Preferably, the intramedullary nail forms a splinting system with the outer steel plate, increasing the stability of the fracture.

Preferably, the proximal end of the lateral locking plate system is provided with an implantation hole of a sighting device, and the sighting device can be implanted outside the femur together with the intramedullary system through a minimally invasive incision, and can also be implanted at a later stage.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model is mainly used for treating proximal femur fracture, the structure is reasonable, the head nail consists of a goose head nail, a pressurizing threaded sleeve and a locking tail cap, the top end of the goose head nail is in a sphere structure, two side wings and the lower part of the goose head nail are provided with spiral grooves, the middle section is provided with threads, the tail part of the goose head nail is provided with screw holes, the sphere structure can effectively uniformly distribute compressive stress on the top surface, the risk of head and neck cutting can be reduced, the pressurizing threaded sleeve of the head nail is internally provided with threads which are matched with the threads of the middle section of the goose head nail, the outer surface of the proximal end is provided with threads, the diameter of the threads is 2mm larger than that of the goose head nail, the tail end is an external hexagon, the tail end of the head nail is flush with the tail part of the goose head nail after pressurization is completed, the head nail can be locked on an external steel plate system by the locking tail cap to form a lever system which takes the main nail as a fulcrum, the occurrence rate of hip varus can be effectively reduced, the main nail fracture incidence caused by the concentration of the inner compressive stress can be reduced, the supporting nail passes through the pore canal of the supporting part to prop under the small tuberosity, the function of supporting the inner wall is played, the locking nail is locked on the inner cortex of the femur from the pore canal of the locking pore canal of the outer locking plate, the outer locking plate is attached to the outer side of the femur, the locking nail, the supporting nail and the locking nail are locked into a whole through the screw threads of the screw tail threads and the locking hole, a complete system of an upper triangle lower lever is formed, two rows of screw holes are reserved at the proximal end of the locking nail plate, screws can be driven in, so that the cortex of the fracture of the outer side of the femur is fixed, the holding force on the fracture is increased, the rotation of the femoral head can be effectively prevented, the rotation resistance of the head nail is increased, and the intramedullary nail and the outer steel plate form a splint system, so that the stability is increased, and the early recovery of a patient is facilitated.

Drawings

FIG. 1 is a schematic view of a modular intramedullary nail plate system for proximal femoral fractures according to the present utility model;

FIG. 2 is a schematic view of the construction of a goose head of the present utility model;

FIG. 3 is a schematic view of the structure of the stud pressurization threaded sleeve of the present utility model;

FIG. 4 is a schematic view of the locking tail cap of the head and lock plate system of the present utility model;

FIG. 5 is a schematic view of the support pin and locking pin of the present utility model;

FIG. 6 is a schematic view of the outboard lock plate system of the present utility model;

fig. 7 is a schematic view of a staple according to the present utility model.

In the figure: 11. a main nail; 111. a main nail tail; 112 proximal end portion; 113. a support portion; 114. a distal portion; 12. a support pin 13, a pressurized threaded sleeve; 14. a goose head nail; 15 a staple plate system; 16. a locking hole 17 at the proximal end of the locking plate and a head nail fixing hole; 18 locking nails; 19. locking nails on the locking nail plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-7, an embodiment of the present utility model is provided:

the utility model relates to a structural schematic diagram of a combined intramedullary nail plate system for proximal femur fracture, as shown in fig. 1, which comprises a main nail 11, a goose head nail 14 and a pressurizing threaded sleeve 13 of the head nail, wherein the main nail 11 consists of a proximal end part 112, a supporting part 113 and a distal end part 114, and the goose head nail 14 and the pressurizing threaded sleeve 13 of the head nail penetrate through a head nail pore canal positioned at the proximal end part; the head and tail parts of the head and the tail locking cap 17 special for the locking nail plate system 15 are locked together, the main nail tail part 111 and the locking nail plate system 15 are also locked together, thus a complete system of an upper triangle lower lever is formed, the locking nail 19 on the locking nail plate is placed into the femur neck through the locking hole 16 at the proximal end of the locking nail plate and locked on the locking nail plate system 15 so as to fix the cortex of the fracture at the outer side of the femur, increase the holding force on the fracture, effectively prevent the rotation of the femur head and increase the rotation resistance of the head nail, the supporting nail 18 passes through the pore canal of the supporting part to prop under the small tuberosity to play the role of supporting the inner wall, the pore canal of the locking part of the distal end implanted in the locking pore canal of the locking nail at the outer side is locked on the inner cortex of the femur, and the locking nail at the outer side is attached to the outer side of the femur.

The openings through which the staples of the proximal portion 112 of the main staple pass in some embodiments of the present utility model are generally oval in shape, which is advantageous for adjusting the rake angle.

In some embodiments, the main pin tail end 111 has annular grooves and outside scallops that can be integrally connected to the outside lock plate system 15 and allow fine tuning of the forward tilt of the lock plate system.

In some embodiments of the present utility model, the outboard lock plate system 15 may be locked into place with the threads of the locking aperture by the threads of each tail.

In some embodiments of the present utility model, the stud consists of a goose stud 14 and a pressing threaded sleeve 13, the top 141 of the goose stud is in a sphere structure, two flanks and the lower part are provided with spiral grooves, the middle section 142 is provided with threads, and the tail part is provided with a screw hole 143.

In some embodiments of the utility model, the pressure threaded sleeve 13 of the stud has threads 132 matching the middle thread 142 of the stud, threads 131 on the outside of the proximal end and 2mm larger than the diameter of the stud, and the tail end 133 is a hexagon and is flush with the tail of the stud 14 after the pressure is applied.

In some embodiments of the present utility model, the screw holes 143 in the tail of the goose head may be placed with special locking screws 17 to secure the goose head to the outside locking plate system 15.

In some embodiments of the present utility model, the threads of the support pin and locking pin 18 are divided into three parts, with the inner part 181 being secured to the inner cortex on the tuberosity, serving as a support for the proximal inner cortex, the outer part 182 being secured to the outer cortex, and the tail threads 183 being secured to the locking pin plate system.

In some embodiments of the present utility model, two rows of screw holes 16 are left at the proximal end of the lateral locking plate system 15, and the split lateral cortex can be fixed by screws or spikes can be inserted to strengthen the fracture fixation.

In some embodiments of the present utility model, the proximal end of the lateral locking plate system is provided with a sight insertion hole 151, which can be inserted into the outer side of the femur through a minimally invasive incision together with the intramedullary system, or can be inserted later.

The utility model relates to a combined intramedullary nail plate system for proximal femur fracture, which consists of a goose head nail 14, a pressurizing threaded sleeve 13 and a locking tail cap 17, wherein the top end of the goose head nail is of a sphere structure 141, two side wings and a spiral groove are arranged below the two side wings, a thread 142 is arranged in the middle section, and a screw hole 143 is arranged at the tail part. Ball

The body-type structure 141 can effectively uniformly distribute compressive stress on the top surface, and can reduce the risk of head and neck cutting. The pressurizing threaded sleeve 13 of the stud is internally provided with threads 132 which are matched with the threads 142 of the middle section of the stud, the outer surface of the proximal end is provided with threads 131, the diameter of the threads is 2mm larger than that of the stud, the tail end is provided with an external hexagon 133, and the threads are flush with the tail of the stud after the pressurizing is completed. The head nails can be locked on the outer steel plate system 15 by the locking tail caps 17 to form a lever system taking the main nails 11 as fulcrums, so that the occurrence rate of hip varus can be effectively reduced, the occurrence rate of main nails breakage caused by the concentration of inner compressive stress can be reduced, the supporting nails 12 penetrate through the pore canal of the supporting parts to prop under the small tuberosity to play a role of supporting the inner wall, and the locking nails 18 are locked on the pore canal of the far-end locking part from the locking pore canal of the outer locking plate

On the inner cortex of femur, an outer locking plate is attached to the outer side of femur and passes through the tail 111 of the main nail 11, the goose head nail 13 of the head nail, the supporting nail 12 and the locking nail 18

The screw thread at the tail of the nail and the thread of the locking hole are locked into a whole to form a complete system of an upper triangle and a lower lever, and two rows of screw holes 16 are reserved at the proximal end of the nail locking plate and can be driven into screws 19 so as to fix the cortex of the fracture at the outer side of the femur, increase the holding force on the fracture, effectively prevent the rotation of the femoral head and increase the anti-rotation capacity of the head nail. Is convenient for early recovery of patients.

Compared with the prior art, the assembled intramedullary nail plate system for proximal femur fracture provided by the utility model has a reasonable structure, and the head nails consist of the goose head nails, the pressurizing threaded sleeve and the locking tail cap, and the top ends of the goose head nails are of a sphere-shaped structure, so that compressive stress can be effectively and uniformly distributed on the top surface, and the risk of head and neck cutting can be reduced. The head nails can be locked on the outer steel plate system to form a lever system taking the main nails as fulcrums, so that the occurrence rate of hip varus can be effectively reduced, the occurrence rate of main nail fracture caused by the concentration of inner compressive stress can be reduced, the outer side wall of the reconstruction damage can be established by the outer nail locking plate system, the holding force on fracture can be increased by placing longer screws, the rotation of the femoral head can be effectively prevented, and the anti-rotation capacity of the head nails can be increased; is convenient for early recovery of patients.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (10)

1. A modular intramedullary nail plate system for treating proximal femoral fractures, comprising:

the device comprises a main nail, a head nail, a supporting nail, a locking nail and a locking nail plate system, wherein the main nail is divided into a proximal end part, a supporting part and a distal end part, the head nail consists of a goose head nail, a pressurizing threaded sleeve and a locking tail cap, and the supporting nail passes through a pore canal of the supporting part to prop against the lower part of a small tuberosity so as to play a role of supporting the inner wall;

the locking nail is locked on the cortex of the inner side of the femur from the hole of the locking hole of the outer side locking plate, the outer side locking plate is attached to the outer side of the femur, the locking nail, the head nail, the supporting nail and the locking nail are locked into a whole through the screw threads of the screw tail threads and the locking hole, the screw hole is reserved at the proximal end of the locking nail, and the screw is driven in to fix the cortex of the fracture of the outer side of the femur.

2. A modular intramedullary nail plate system for treating proximal femoral fractures according to claim 1, wherein: the hole through which the head nail passes at the proximal end part of the main nail is shaped like an ellipse so as to adjust the forward inclination angle.

3. A modular intramedullary nail plate system for treating proximal femoral fractures according to claim 1, wherein: the tail end of the main nail is provided with a ring-shaped groove and an outer sector-shaped notch which are connected with the outer locking nail plate system into a whole.

4. A modular intramedullary nail plate system for treating proximal femoral fractures according to claim 1, wherein: the outside locking nail plate system can be locked with the threads of the locking hole into a whole through the tail threads.

5. A modular intramedullary nail plate system for treating proximal femoral fractures according to claim 1, wherein: the head nail consists of a goose head nail and a pressurizing threaded sleeve, the top end of the goose head nail is of a sphere structure, two side wings and the lower part of the goose head nail are provided with spiral grooves, the middle section of the goose head nail is provided with threads, and the tail part of the goose head nail is provided with a screw hole.

6. A modular intramedullary nail plate system for treating proximal femoral fractures according to claim 1, wherein: the pressurizing threaded sleeve of the head nail is internally provided with threads which are matched with the threads in the middle section of the goose head nail, the outside of the near end is provided with threads, the diameter of the threads is 2mm larger than that of the goose head nail, the tail end is an external hexagon, and the tail end of the head nail is flush with the tail of the goose head nail after pressurization is finished.

7. A modular intramedullary nail plate system for treating proximal femoral fractures according to claim 1, wherein: the screw holes at the tail parts of the goose head nails are placed with special locking screws to fix the goose head nails on the outside locking nail plate system.

8. A modular intramedullary nail plate system for treating proximal femoral fractures according to claim 1, wherein: the screw thread of the support nail and the locking nail is divided into three parts, the inner part is fixed on the inner cortex of the small tuberosity to play a supporting role on the inner cortex of the near end, the outer part is fixed on the outer cortex, and the tail part screw thread is fixed on the locking nail plate system.

9. A modular intramedullary nail plate system for treating proximal femoral fractures according to claim 1, wherein: two rows of screw holes are reserved at the proximal end of the outer lock screw plate system, split outer cortex can be fixed by screws, long nails can be placed into the outer lock screw plate system for fracture fixation, and the intramedullary nails and the outer steel plate form a splint system.

10. A modular intramedullary nail plate system for treating proximal femoral fractures according to claim 1, wherein: the proximal end of the outer locking nail plate system is provided with an implantation hole of a sighting device, and the sighting device and the intramedullary system are together implanted outside the femur through a minimally invasive incision.