CN218106019U - Sleeve assembly for fixing proximal femoral fracture - Google Patents
Sleeve assembly for fixing proximal femoral fracture Download PDFInfo
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- CN218106019U CN218106019U CN202221199220.8U CN202221199220U CN218106019U CN 218106019 U CN218106019 U CN 218106019U CN 202221199220 U CN202221199220 U CN 202221199220U CN 218106019 U CN218106019 U CN 218106019U
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Abstract
The utility model belongs to the technical field of medical instrument, a fixed suit subassembly of usefulness of thighbone near-end fracture is disclosed, including locating component and fixed subassembly, locating component includes the location baffle, the handle grips, pilot pin and locating plug, the location baffle is equipped with the through-hole, connector and location interface, location interface sets up for the slope, fixed subassembly includes the coaptation board, locking screw and lag screw, the coaptation board is equipped with a plurality of locking screw holes and lag screw hole, the quantity and the position of locking screw hole are corresponding with the quantity and the position of through-hole, lag screw hole's bottom surface is equipped with the sleeve, the sleeve sets up for the slope, telescopic quantity, position and gradient and location interface's quantity, position and gradient are corresponding, location interface's internal diameter is greater than telescopic external diameter, be certain angle between locking screw and the lag screw, can realize that the screw is accurate to be put into, ensure that the coaptation board is installed correctly, coaptation board overall system has stronger stability structure, possess anti revolve and anti function of collapsing.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, in particular to suit subassembly of fixed usefulness of thighbone near-end fracture.
Background
At present, the operation method aiming at the proximal femur fracture and the internal fixing mode thereof are various clinically. The main mode is to obtain good proximal femur reduction effect and reliable biomechanical property by various internal fixing devices and technologies, wherein the common internal fixing systems mainly comprise PFNA type intramedullary nails, gamma type intramedullary nails, DHS bone fracture plates, proximal femur bone fracture plates and hollow bone screws. Except that old patients mostly adopt an intramedullary nail system to perform proximal femoral fracture reduction and fixation, most middle-aged and young patients still need to adopt a mode of fixing 3 hollow compression screws to perform surgical treatment, and the mode has the problems of poor screw anti-rotation performance, insufficient fracture fixation stability, low anti-collapse capability, pull screw separation after operation, high post-operation fracture rate and the like.
Therefore, some researchers have tried to treat the proximal fracture of the non-displaced femur of young people by using the locking bone plate, and although the locking bone plate and the screw system have better biomechanical properties compared with the original hollow bone screw, the bone plate has the problem of position deviation during installation, and the locking bone plate and the screw system still have the problems of poor anti-rotation performance, insufficient fracture stability, low anti-collapse capability, pull screw falling out after operation, too high post-operation broken screw (plate) rate, low bone surface attaching degree of the bone plate and a patient, difficult determination of the nail setting angle in the operation and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the above-mentioned prior art at least. Therefore, the utility model provides a suit subassembly of fixed usefulness of thighbone near-end fracture can accurately install the coaptation board in suitable position, and whole coaptation board have strong stability structure, possess anti rotatory and anti function of collapsing that turns over.
The utility model provides a suit subassembly of fixed usefulness of thighbone near-end fracture, include:
the positioning assembly comprises a positioning guide plate, a holding handle, a positioning needle and a positioning plug, the positioning guide plate is provided with a plurality of through holes, a connecting port and a positioning interface which protrude outwards are arranged on the surface of the positioning guide plate, the positioning interface is obliquely arranged and is communicated with the bottom surface of the positioning guide plate, the holding handle is connected with the connecting port, the positioning plug is connected with the positioning interface, the positioning plug is provided with a needle hole, and the positioning needle penetrates through the needle hole;
a fixing component, fixed component includes coaptation board, locking screw and lag screw, the coaptation board is equipped with a plurality of locking screw hole and lag screw hole, locking screw hole's quantity and position with the quantity and the position of through-hole are corresponding, lag screw hole's bottom surface is equipped with the sleeve, the sleeve sets up for the slope, telescopic quantity, position and gradient with the quantity, the position and the gradient of location interface are corresponding, the internal diameter of location interface is greater than telescopic external diameter, locking screw runs through locking screw hole, lag screw runs through lag screw hole with the sleeve, locking screw with be certain angle between the lag screw.
As a further improvement of the above technical solution, the number of the locking screws is 4, the number of the lag screws is 2, the locking screws and the lag screws are triangular in the coronal direction, and the locking screws and the lag screws are divergent in the horizontal direction.
As a further improvement of the technical scheme, the connecting port is internally provided with internal threads, the holding handle is provided with external threads, and the holding handle is in threaded connection with the connecting port.
As a further improvement of the above technical solution, the grip handle includes a grip, a connection sleeve and a connection rod, the grip is fixedly connected with the outer wall of the connection sleeve, a fixture block is arranged at the bottom end of the connection sleeve, a clamping groove matched with the fixture block is arranged in the connection port, the connection rod is movably arranged inside the connection sleeve, a knob is arranged at the top of the connection rod, the knob is located outside the connection sleeve, and an external thread matched with an internal thread in the connection port is arranged at the bottom of the connection rod.
As a further improvement of the above technical scheme, the positioning plug is provided with an external thread, the positioning interface is provided with an internal thread matched with the external thread of the positioning plug, and the positioning plug is in threaded connection with the positioning interface.
As a further improvement of the technical scheme, the positioning guide plate is provided with a first anatomical curved surface, and the bone fracture plate is provided with a second anatomical curved surface.
As a further improvement of the technical scheme, the side surface of the bone fracture plate is provided with symmetrical cable holes.
As a further improvement of the technical scheme, the positioning guide plate and the bone fracture plate are the same in size.
As a further improvement of the above solution, the locking screw is provided with a first locking thread, a first bone thread and a first self-tapping edge.
As a further improvement of the above technical solution, the lag screw is provided with a second locking thread, a second bone thread, and a second self-tapping edge.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model provides a suit subassembly of fixed usefulness of thighbone near-end fracture, the connector connection of handle and location baffle, arrange the location baffle in the thighbone near-end through the handle of gripping, adopt the pilot pin to run through and insert location in the thighbone behind the pinhole of pilot pin, take off the pilot pin, follow-up accessible core bit drills the thighbone along pilot pin and location interface, and drill along the through-hole, make the thighbone have corresponding blind hole, take off the pilot pin, behind the location baffle, because the quantity and the position of the locking screw hole of coaptation board correspond with the quantity and the position of the through-hole on the location baffle, the quantity of the sleeve of coaptation board, position and gradient and the quantity of the location interface on the location baffle, position and gradient correspond, the sleeve of coaptation board can insert in the blind hole that drills along the location interface, the locking screw hole corresponds with the blind hole that drills along the through-hole simultaneously, can realize locking screw and accurate implantation of pulling force screw, ensure the correct installation of coaptation board; simultaneously, be certain angle between locking screw and the lag screw, the cooperation sleeve strengthens structural stability, and is more firm to the fixed of fracture, and fixed subassembly possesses anti rotatory function, and whole system has stronger stable structure, possesses anti soon and anti function of collapsing.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art, without inventive effort, can also derive other designs and figures from them.
FIG. 1 is a schematic view of the positioning assembly of the present invention;
fig. 2 is a schematic structural view of the fixing assembly of the present invention;
FIG. 3 is a schematic structural view of the positioning guide plate of the present invention;
fig. 4 is a schematic structural view of the positioning plug of the present invention;
FIG. 5 is a schematic structural view of the grip of the present invention;
FIG. 6 is an enlarged schematic view of a portion A of FIG. 5;
fig. 7 is a schematic structural view of the fixing component of the present invention in the coronal direction;
fig. 8 is a schematic structural view of the fixing assembly of the present invention in the horizontal plane direction;
fig. 9 is a schematic structural view of the bone fracture plate of the present invention;
fig. 10 is a schematic structural view of the locking screw of the present invention;
fig. 11 is a schematic structural view of the lag screw of the present invention;
FIG. 12 is a schematic view of the positioning assembly of the present invention connected to a femur;
fig. 13 is a schematic structural view of the positioning assembly of the present invention cooperating with the femur;
fig. 14 is a schematic structural view of the fixing member of the present invention connected to the femur.
In the figure, 100-positioning guide, 110-through hole, 120-connecting port, 121-clamping groove, 130-positioning interface, 200-holding handle, 210-grip, 220-connecting sleeve, 221-clamping block, 230-connecting rod, 231-knob, 300-positioning pin, 400-positioning plug, 410-pin hole, 500-bone plate, 510-locking screw hole, 520-tension screw hole, 530-sleeve, 540-cable hole, 600-locking screw, 610 first locking thread, 620-first bone thread, 630-first self-tapping edge, 700-tension screw, 710-second locking thread, 720-second bone thread, 730-second self-tapping edge.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. The preferred embodiment of the present invention is shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that people can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but it cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated by referring to the orientation description, such as upper, lower, front, rear, left, right, top, bottom, horizontal plane, coronal plane, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, and the above, below, exceeding, etc. are understood as excluding the number, and the above, below, inside, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, the terms such as setting, installing, connecting, and several should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the terms in the present invention by combining the specific contents of the technical solutions.
Referring to fig. 1 to 4, a kit for fixing proximal femur fracture according to an embodiment of the present invention includes:
the positioning assembly comprises a positioning guide plate 100, a holding handle 200, a positioning needle 300 and a positioning plug 400, the positioning guide plate 100 is provided with a plurality of through holes 110, the surface of the positioning guide plate 100 is provided with a connecting port 120 and a positioning interface 130 which protrude outwards, the positioning interface 130 is arranged in an inclined manner, the positioning interface 130 is communicated with the bottom surface of the positioning guide plate 100, the holding handle 200 is connected with the connecting port 120, the positioning plug 400 is connected with the positioning interface 130, the positioning plug 400 is provided with a needle hole 410, and the positioning needle 300 penetrates through the needle hole 410;
the fixing assembly comprises a bone plate 500, locking screws 600 and tension screws 700, wherein the bone plate 500 is provided with a plurality of locking screw 600 holes 510 and tension screw 700 holes 520, the number and the positions of the locking screw 600 holes 510 correspond to those of the through holes 110, the bottom surfaces of the tension screw 700 holes 520 are provided with sleeves 530, the sleeves 530 are obliquely arranged, the number, the positions and the inclination of the sleeves 530 correspond to those of the positioning interfaces 130, the inner diameter of the positioning interfaces 130 is larger than the outer diameter of the sleeves 530, the locking screws 600 penetrate through the locking screw 600 holes 510, the tension screws 700 penetrate through the tension screw 700 holes 520 and the sleeves 530, and a certain angle is formed between the locking screws 600 and the tension screws 700.
In some embodiments of the present invention, the number of the locking screws 600 is 4, the number of the tension screws 700 is 2, the locking screws 600 and the tension screws 700 are triangular in the coronal direction, and the locking screws 600 and the tension screws 700 are divergent in the horizontal direction. As shown in fig. 7 and 8, a plurality of locking screws 600 and lag screws 700 are arranged at a certain angle, and by adopting the structural design, surrounding bones can be better held, so that the whole system has a stronger stable structure and has anti-rotation and anti-collapse functions.
In some embodiments of the present invention, an internal thread is disposed in the connection port 120, an external thread is disposed on the handle 200, and the handle 200 is threadedly connected to the connection port 120.
In some embodiments of the present invention, the handle 200 includes a handle 210, a connection sleeve 220 and a connection rod 230, the handle 210 is fixedly connected to the outer wall of the connection sleeve 220, the bottom end of the connection sleeve 220 is provided with a fixture block 221, a clamping groove 121 matched with the fixture block 221 is provided in the connection port 120, the connection rod 230 is movably disposed in the connection sleeve 220, the top of the connection rod 230 is provided with a knob 231, the knob 231 is located outside the connection sleeve 220, and the bottom of the connection rod 230 is provided with an external thread matched with the internal thread in the connection port 120. As shown in fig. 3, 5 and 6, when the handle 200 is connected to the positioning guide 100, the connection sleeve 220 is inserted into the connection port 120 through the handle 210, the fixture block 221 is inserted into the slot 121 for positioning through rotation, and the connection rod 230 is screwed into the connection port 120 through the knob 231 for fixing, so that the connection between the handle 200 and the positioning guide 100 can be completed quickly and accurately.
The utility model discloses an in some embodiments, location stopper 400 is equipped with the external screw thread, location interface 130 be equipped with location stopper 400 external screw thread complex internal thread, location stopper 400 and location interface 130 threaded connection. Through threaded connection, the positioning plug 400 is convenient to detach and mount in the operation process.
In some embodiments of the present invention, the positioning guide 100 is provided with a first anatomic curved surface and the bone plate 500 is provided with a second anatomic curved surface. As shown in fig. 3 and 9, the anatomical curved surface is designed to have a higher degree of conformity with the bone surface.
In some embodiments of the present invention, the bone plate 500 is provided with symmetrical cable holes 540 in the sides. As shown in fig. 9, the side of the bone plate 500 is provided with symmetrical cable holes 540 to form a dual fixing mode with screws, so as to reduce the fixing notches, improve the fixing reliability, enlarge the fixing range and stabilize the fixing.
In some embodiments of the present invention, the positioning guide 100 and the bone plate 500 are the same size. The locking screw 600 holes 510 of the bone plate 500 correspond to the through holes 110 of the positioning guide plate 100 and the sleeves 530 on the bone plate 500 correspond to the positioning interfaces 130 of the positioning plates, i.e. the distance between the through holes 110 on the positioning guide plate 100 is the same as the distance between the locking screw 600 holes 510 on the bone plate 500; the distance between the through holes 110 in the positioning guide 100 and the positioning interface 130 is the same as the distance between the holes 510 of the locking screw 600 and the sleeve 530 in the bone plate 500.
In some embodiments of the present invention, the locking screw 600 is provided with a first locking thread 610, a first bone thread 620 and a first self-tapping edge 630, and the lag screw 700 is provided with a second locking thread 710, a second bone thread 720 and a second self-tapping edge 730. As shown in fig. 10, 11 and 2, the bone screw thread can better increase the holding force between the screw and the cortical bone around the screw channel and prevent the screw from loosening; the bridging effect of the locking system formed by locking the locking screw 600 and the lag screw 700 on the bone plate 500 on the fracture is better than the traditional hollow compression screw pressurizing effect on the fracture healing, under the bridging principle, the locking screw 600, the lag screw 700 and the bone plate 500 can be taken as a whole, the moment between the screw and the bone plate 500 is transferred, and the longitudinal stress can be directly transmitted to the two ends of the fracture through the screw neck; the bridging effect changes the reduction of the fracture from direct to indirect reduction, from strong to stable fixation, and the force against pull-out is greater because of its greater gripping area in the bone, as compared to the compression effect. The self-tapping cutting edge is designed, so that the frictional resistance is reduced during screwing in, and the femur can be screwed in more quickly and more easily.
Adopt the utility model discloses when the suit subassembly of fixed usefulness of thighbone near-end fracture is operated:
s01, determining a surgical part and making a surgical scheme according to related image data of X-rays, CT, MRI and the like before a patient operation, and customizing and processing a bone fracture plate 500 and a positioning guide plate 100 for the patient by adopting a 3D printing mode before the operation according to the image data and an operation plan;
s02, during operation, incision and exposure are carried out according to an operation plan;
s03, selecting a positioning plug 400 with a proper specification according to the size of the selected positioning needle 300, and installing the positioning plug 400 on the positioning interface 130;
s04, positioning by using the fixture block 221 on the connecting sleeve 220 and the fixture groove 121 in the connecting port 120, screwing the knob 231, and assembling the holding handle 200 and the positioning guide plate 100;
s05, as shown in fig. 12, the positioning guide plate 100 is placed on the outer side of the proximal end of the femur through the holding handle 200, the positioning pin 300 is placed along the pin hole 410 of the positioning plug 400, and perspective confirmation is performed;
s06, as shown in FIG. 13, the positioning plug 400 is taken down, blind holes are drilled at the proximal end of the femur through a hollow drill along the positioning pin 300 and the positioning interface 130, the diameter of the hollow drill is smaller than the inner diameter of the positioning interface 130, the diameter of the hollow drill is slightly larger than the outer diameter of the sleeve 530 of the bone plate 500, and meanwhile, the blind holes are drilled at the proximal end of the femur through the through holes 110 through a common drill;
s07, the positioning assembly, the cannulated drill bit, etc. are removed, the bone plate 500 is placed along the blind hole, as shown in fig. 14, and the locking screw 600 and lag screw 700 are placed with conventional stapling tools (drill guides, drill bits, taps, drivers, etc.) to complete the installation.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like 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.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A kit for fixation of a proximal femoral fracture, comprising:
the positioning assembly comprises a positioning guide plate, a holding handle, a positioning needle and a positioning plug, the positioning guide plate is provided with a plurality of through holes, a connecting port and a positioning interface which protrude outwards are arranged on the surface of the positioning guide plate, the positioning interface is obliquely arranged and is communicated with the bottom surface of the positioning guide plate, the holding handle is connected with the connecting port, the positioning plug is connected with the positioning interface, the positioning plug is provided with a needle hole, and the positioning needle penetrates through the needle hole;
a fixing component, fixed component includes coaptation board, locking screw and lag screw, the coaptation board is equipped with a plurality of locking screw hole and lag screw hole, locking screw hole's quantity and position with the quantity and the position of through-hole are corresponding, lag screw hole's bottom surface is equipped with the sleeve, the sleeve sets up for the slope, telescopic quantity, position and gradient with the quantity, the position and the gradient of location interface are corresponding, the internal diameter of location interface is greater than telescopic external diameter, locking screw runs through locking screw hole, lag screw runs through lag screw hole with the sleeve, locking screw with be certain angle between the lag screw.
2. The kit for fixing a proximal femoral fracture according to claim 1, wherein the number of the locking screws is 4, the number of the lag screws is 2, the locking screws and the lag screws are triangular in a coronal direction, and the locking screws and the lag screws are divergent in a horizontal direction.
3. The kit for fixing a proximal femoral fracture according to claim 1, wherein the connection port has an internal thread, the grip is provided with an external thread, and the grip is threadedly connected to the connection port.
4. The kit assembly for fixing proximal femoral fracture according to claim 3, wherein the grip comprises a grip, a connecting sleeve and a connecting rod, the grip is fixedly connected with the outer wall of the connecting sleeve, a clamping block is arranged at the bottom end of the connecting sleeve, a clamping groove matched with the clamping block is arranged in the connecting port, the connecting rod is movably arranged in the connecting sleeve, a knob is arranged at the top of the connecting rod and positioned outside the connecting sleeve, and an external thread matched with the internal thread in the connecting port is arranged at the bottom of the connecting rod.
5. The kit for fixing proximal femoral fractures according to claim 1, wherein the locating plug is provided with external threads, the locating interface is provided with internal threads matched with the external threads of the locating plug, and the locating plug is in threaded connection with the locating interface.
6. The kit for fixing a proximal femoral fracture according to claim 1, wherein the positioning guide has a first anatomically curved surface and the bone plate has a second anatomically curved surface.
7. The kit for fixing proximal femoral fractures according to claim 1, wherein the bone plate is provided with symmetrical cable holes in the lateral surface.
8. The kit for fixation of a proximal femoral fracture of claim 1, wherein the positioning guide and the bone plate are the same size.
9. The kit for proximal femoral fracture fixation of claim 1, wherein the locking screw is provided with a first locking thread, a first bone thread and a first self-tapping edge.
10. The kit for proximal femoral fracture fixation of claim 1, wherein the lag screw is provided with a second locking thread, a second bone thread, and a second self-tapping edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221199220.8U CN218106019U (en) | 2022-05-18 | 2022-05-18 | Sleeve assembly for fixing proximal femoral fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221199220.8U CN218106019U (en) | 2022-05-18 | 2022-05-18 | Sleeve assembly for fixing proximal femoral fracture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218106019U true CN218106019U (en) | 2022-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221199220.8U Active CN218106019U (en) | 2022-05-18 | 2022-05-18 | Sleeve assembly for fixing proximal femoral fracture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218106019U (en) |
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2022
- 2022-05-18 CN CN202221199220.8U patent/CN218106019U/en active Active
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