CN112472262A - Single-rod four-nail external fixing frame for fracture - Google Patents
Single-rod four-nail external fixing frame for fracture Download PDFInfo
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- CN112472262A CN112472262A CN202011459661.2A CN202011459661A CN112472262A CN 112472262 A CN112472262 A CN 112472262A CN 202011459661 A CN202011459661 A CN 202011459661A CN 112472262 A CN112472262 A CN 112472262A
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- 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
- A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
- A61B17/66—Alignment, compression or distraction mechanisms
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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 single-rod four-nail fracture external fixing frame which comprises two head end fixing structures and corresponding fixing nails. At least two end multi-dimensional fasteners and corresponding fastening nails. The outer sides of the two fixing nails at the head end are respectively fixed at the head end of the connecting rod through the head end fixing structures, and the outer sides of the fixing nails at the tail end are respectively fixed at the tail end of the connecting rod through the tail end multidimensional fixing pieces. The invention has simple structure, can reduce the traumatism of the patient caused by the operation as much as possible, can reduce the volume and the weight of the external support of the patient in the rehabilitation period, improves the mobility flexibility of the patient in the rehabilitation period, reduces the oppressibility of the external support to the fracture part, and is beneficial to the recovery.
Description
Technical Field
The invention belongs to the technical field of fracture positioning frames, and particularly relates to an external fixing frame for positioning and fixing fractures only through a single connecting rod and four nails.
Background
The fixing mode to the fracture has steel plate fixation, outer frame fixation and intramedullary nail fixation, and the steel plate internal fixation has easy operation, short learning cycle, but the nail plate integrated configuration that adopts at present has the problem to be: the wound is large, the accidental injury probability is high, infection and non-healing, delayed healing, nail and plate breaking occur occasionally, the postoperative scar is large, the beauty is affected, and the minimally invasive principle is not met. The mount that uses at treatment fracture has a lot of varieties, but all there is the structure complicacy, constitute the many shortcoming of part, the fixed staple of squeezing into to the fracture both sides vertical of adopting of current outrigger, then constitute the mount through a plurality of universal joints and connecting rod interconnect, because the universal joint need have horizontal rotation and lock die and vertical rotation and lock dead regulation relation, universal wheel is bulky, whole outer frame is bulky, carry inconveniently after the patient of fracture installs and uses, the clothes can't be worn and changed at the fracture position, influence the outer activity of wading, it is easy and simple to handle to await developing, convenient to carry and the fracture fixation outrigger who is accepted by the patient easily. The fixed fracture fixed mode that is commonly used of outrigger, the staple is squeezed into to the fracture both sides vertical to the fixed many adoption of current outrigger, then constitute the mount through a plurality of universal joints and connecting rod interconnect, because the universal joint need have horizontal rotation and lock die with vertical rotation and lock dead regulation relation, universal wheel is bulky great, whole outer frame is bulky bigger, carry after the fracture patient installs and uses inconveniently, the clothes can't be worn at the fracture position, the influence is involved in external activities, it is easy and simple to handle to wait to develop a urgent need, convenient to carry and the fixed outrigger of fracture easily accepted by the patient.
Femoral shaft fractures and distal femoral fractures are common fractures in clinical practice. Surgical treatment is the preferred treatment method, and reduction butt joint and fixation are firstly carried out on two ends of a fracture part before intramedullary nail fixation and bone plate fixation are carried out. Traction is an important means for reducing femoral fracture and recovering the length of lower limbs. At present, a tractor used for the reduction of lower limb fracture patients in each hospital mainly comprises a traction rope and a pulley, one end of the traction rope is connected with a bracket at the fracture part, and the other end of the traction rope bypasses the pulley to suspend weights, and traction force is controlled by increasing the number of the weights or changing the weight of the weights manually. The patient lies in the sickbed and can move and bounce, so that the traction force is changed, and once the traction force is changed, the weight of the weight is adjusted. For the existing manual control method, the frequent replacement of the weights is very inconvenient, which not only increases the burden on the nursing staff in the hospital, but also brings trouble to the reduction of the fracture patient. On the other hand, because the one end of haulage rope is connected the fracture position distal end, and needs the traction dynamics great, leads to the fracture distal end to be followed the haulage rope direction only, and fracture distal end and near-end have crisscross and twist reverse the condition usually after the fracture, belongs to the rigidity through the mode of drawing the fracture distal end among the prior art and pulls, is difficult for rotating and swing the fracture to can't reach the best effect that resets.
The fixed fracture fixed mode that is commonly used of outrigger, the staple is squeezed into to the fracture both sides vertical to the fixed many adoption of current outrigger, then constitute the mount through a plurality of universal joints and connecting rod interconnect, because the universal joint need have horizontal rotation and lock die with vertical rotation and lock dead regulation relation, universal wheel is bulky great, whole outer frame is bulky bigger, carry after the fracture patient installs and uses inconveniently, the clothes can't be worn at the fracture position, the influence is involved in external activities, it is easy and simple to handle to wait to develop a urgent need, convenient to carry and the fixed outrigger of fracture easily accepted by the patient.
The external fracture fixation frame mounting component with the publication number of CN 109009372A has a simple structure, can enable a patient to carry fewer external fixation frames, but has a complex operation process, needs more matched structural parts and has higher realization difficulty.
Disclosure of Invention
Aiming at various defects existing in the existing fracture fixation mode, the invention provides the single-rod four-nail fracture external fixation frame with simplified structure and better practicability, so as to achieve the purposes of minimally invasive and greatly simplified structure, facilitate the flexible action of the patient in the recovery period and reduce the medical cost.
The technical scheme for solving the technical problem is that the single-rod four-nail fracture external fixing frame is adopted and comprises two head end fixing structures and corresponding fixing nails (for example, two head end fixing pieces and two head end fixing nails). At least two distal multidimensional mounts and corresponding fixation nails (e.g., two distal multidimensional mounts and two distal fixation nails). The outer sides of the two fixing nails at the head end are respectively fixed at the head end of the connecting rod through the head end fixing structures, and the outer sides of the fixing nails at the tail end are respectively fixed at the tail end of the connecting rod through the tail end multidimensional fixing pieces.
The lower end of the rod body of the fixing nail is a self-tapping thread section which is screwed into a bone, and the upper section of the rod body of the fixing nail is provided with a thread section.
The multi-dimensional fixing piece comprises a main body, a tail end multi-dimensional fixing piece and a tail end multi-dimensional fixing piece, wherein a connecting rod through hole is formed in one side of the main body of the tail end multi-dimensional fixing piece and used for installing a connecting rod, a locking seam is formed in one side of the connecting rod through hole and used for locking the connecting rod, and a penetrating flat nail hole is formed in a position perpendicular to the; the thread section of the fixing nail is positioned at two sides of the flat through-nail hole and is respectively provided with a nut for pressing and locking the seam.
The mode of the head end fixed knot structure who adopts has the multiple, and what one of them head end fixed knot structure adopted is the head end mounting, and there is the connecting rod perforation that runs through to be used for installing the connecting rod main part one side of head end mounting, has the locking seam to be used for locking the connecting rod in connecting rod perforation one side, and the perpendicular to connecting rod perforation has the flat hole of through-going nail to be used for installing the staple, and the screw thread section of staple is located flat hole both sides of through-going nail and installs the lock nut respectively and be used for compressing tightly the locking seam.
The other head end fixing structure is characterized in that at least two through holes which penetrate through the head end of the connecting rod are formed in the head end of the connecting rod, and after the two fixing nails at the head end penetrate through the corresponding through holes respectively, the two fixing nails at the head end are fixed on the upper side and the lower side of each through hole through a locking nut respectively.
The other head end fixing structure adopts a head end multidimensional fixing piece a, one side of the main body of the head end multidimensional fixing piece a is provided with a connecting rod through hole for installing a connecting rod, one side of the connecting rod through hole is provided with a locking seam for locking the connecting rod, and a penetrating through flat through hole is arranged perpendicular to the connecting rod through hole for installing a fixing nail; the thread section of the fixing nail is positioned at two sides of the flat through-nail hole and is respectively provided with a nut for pressing and locking the seam.
The connecting rod is a straight connecting rod or a curved arc is arranged in the middle of the straight connecting rod.
The connecting rod through hole of the fixing piece is internally provided with convex-concave grains along the axial direction, or the outer side of the connecting rod is provided with convex-concave grains for improving the locking degree between the fixing piece and the connecting rod.
The invention has the following beneficial effects: 1. the invention has simple structure, can reduce the traumatism of the patient caused by the operation as much as possible, can reduce the volume and the weight of the external support of the patient in the rehabilitation period, improves the mobility flexibility of the patient in the rehabilitation period, reduces the oppressibility of the external support to the fracture part, and is beneficial to the recovery.
2. The invention has simple positioning operation, can complete the operation only by simple training and learning, simplifies the operation workload and reduces the operation cost.
3. The invention has simple and practical structure and low manufacturing cost, and reduces the medical cost. Fewer structural components provide convenience for sterilization and maintenance processes. Not only is the installation easy, but also the removal is easy.
Drawings
FIG. 1 is a schematic view of the state of use of embodiment 1 of the present invention.
Fig. 2 is a perspective view of the head end fixture of fig. 1.
Fig. 3 is a perspective view of the multi-dimensional distal anchor of fig. 1.
Fig. 4 is a front view of the holder of embodiment 1.
FIG. 5 is a top view and simplified diagram of the fixing frame of embodiment 1.
Fig. 6 is one of the side views of the holder of embodiment 1.
Fig. 7 is a second side view of the holder of embodiment 1.
Fig. 8 is a schematic view of a use state of embodiment 2 of the present invention.
Fig. 9 is a front view of the holder of fig. 8.
Fig. 10 is a schematic view of a using state of the fixing frame according to embodiment 3 of the present invention.
Fig. 11 is a schematic view of a using state of the fixing frame according to embodiment 4 of the present invention.
Fig. 12 is a top view and simplified diagram of a fixing frame according to an embodiment 5 of the present invention.
FIG. 13 is a schematic view comparing the installation location of various types of staples and links.
Fig. 14 is a schematic view of the assembly process of the staple.
Fig. 15 is a schematic view of the assembly process of the different angular position fixing nail.
Reference numbers in the figures: the connecting rod comprises a connecting rod 1, fixing nails 2, self-tapping screw sections 21, screw thread sections 22, head end fixing pieces 3, connecting rod through holes 31, locking seams 32, through-nail circular holes 33, locking nuts 4, tail end multi-dimensional fixing pieces 5, connecting rod through holes 51, locking seams 52, through-nail flat holes 53, anti-skidding teeth 54, gaskets 6, a plane 7 and through holes 8.
Detailed Description
Example 1: a single-rod four-nail external fixing frame with a relative regulation at the head end and an absolute regulation at the tail end is shown in figure 1 and comprises two head end fixing pieces 3, two head end fixing nails 2, two tail end multidimensional fixing pieces 5, two tail end fixing nails 2 and a straight connecting rod 1.
The outer sides of the two fixing nails at the head end are respectively fixed at the head end of the connecting rod through the head end fixing piece 3, and the outer sides of the fixing nails at the tail end are respectively fixed at the tail end of the connecting rod through the tail end multidimensional fixing piece 5.
As can be seen from the figure, the lower end of the rod body of each fixing nail 2 is a self-tapping thread section 21 for screwing into the bone, and the upper section is provided with a thread section 22 for installing a lock nut.
As shown in fig. 2, a through connecting rod through hole 31 is formed in one side of the main body of the head end fixing member 3 for installing a connecting rod, a locking slit 32 is formed in one side of the connecting rod through hole 31 for locking the connecting rod, a through nail hole 33 is formed in the side perpendicular to the connecting rod through hole 31 for installing a fixing nail, and a nut is respectively installed on two sides of the through nail hole 33 of the fixing nail in the threaded section 22 for pressing the locking slit 32.
As shown in fig. 3, a connecting rod through hole 51 is formed in one side of the body of the end multi-dimensional fixing member 5 for installing a connecting rod, a locking slit 52 is formed in one side of the connecting rod through hole 51 for locking the connecting rod, and a penetrating flat nail hole 53 is formed perpendicular to the connecting rod through hole 51 for installing a fixing nail; the threaded section 22 of the fixing nail is provided with a nut at two sides of the nail penetrating round hole 53 for pressing the locking seam 52.
As can be seen from fig. 3, the outer surface of the fixing piece at both ends of the flat through-nail hole 53 is provided with anti-slip teeth 54, the inner surface of the spacer 6 at both ends of the flat through-nail hole 53 is also provided with anti-slip teeth, the anti-slip teeth of the spacer are matched and embedded with the anti-slip teeth 54 of the fixing piece, and the corresponding locking nuts sleeved on the fixing nails are respectively pressed on the outer sides of the spacers at both sides of the flat through-nail hole 53.
As can be seen from fig. 1 and 2, there are several adjustment relationships between the two first fixing elements 3 and the staple and the connecting rod 1, namely: adjust along connecting rod axial translation, rotate along the connecting rod and adjust along staple lift, nevertheless with the fixed back of 3 upper and lower lock nuts of mounting, lock seam 32 is compressed tightly to upper and lower lock nut, leads to the mounting 3 card to be fixed in the connecting rod outside, and staple and connecting rod are dead by the lock this moment. In order to improve the locking degree of the fixing member and the connecting rod, convex and concave grains along the axial direction can be arranged in the connecting rod through hole 31 of the fixing member, or convex and concave grains are arranged on the outer side of the connecting rod, so that after the fixing member is locked, the absolute locking relation between the fixing member and the connecting rod is achieved.
As can be seen from fig. 1 and 3, there are several adjustment relationships between the two end fixing pieces 5 and the staple and the connecting rod 1, namely: the adjusting device can be adjusted by axially translating along the connecting rod, rotating along the connecting rod and lifting along the fixing nail. Meanwhile, the multidimensional fixing piece 5 is provided with a flat nail penetrating hole 53, so that the fixing nail can move left and right relative to the fixing piece 5.
When the external fixator of the embodiment is used, the external fixator is not assembled and then used, but four fixing nails are firstly fixed, each two fixing nails are respectively fixed at two ends of a fracture in a group, and then the connecting rod 1 is fixed through the head end fixing piece 3 and the tail end multi-dimensional fixing piece 5, as shown in fig. 14, the assembling sequence is composed of (1) → (2) → (3) → (4). Specifically, the nail A and the nail B shown in fig. 4 are firstly fixed at the proximal end of the fracture, the nail A and the nail B are required to be parallel, and then the nail C and the nail D are fixed at the distal end of the fracture, the nail C and the nail D are required to be parallel. Because A nail and B nail are close and be fixed in same bone section, guarantee very easily that A nail and B nail are parallel, likewise, C nail and D nail are close and be fixed in same bone section, guarantee very easily that C nail and D nail are parallel.
After the nail A and the nail B are driven, the head end fixing piece 3 and the connecting rod can be installed, and then the nail C and the nail D are respectively driven into a bone section which is positioned at one side of the connecting rod and is far away from the fracture according to the direction of the connecting rod extending to the far end. A, B, C, D four nails may also be driven simultaneously.
The relationship between the C nail and the D nail and the a nail and the B nail is not required to be strictly parallel or on the same straight line, but the relationship can be controlled to be as close to the same straight line as possible (positioning without using instruments and allowing a small deviation) during manual operation, so that A, B, C, D four nails can realize nailing operation quickly.
In this embodiment, the a and B staples have only three dimensional adjustments, namely: adjust along connecting rod axial translation, rotate along the connecting rod and adjust, along staple lift adjustment, fix the back to A nail and B nail and connecting rod 1 through head end mounting 3, rethread terminal multidimension mounting 5 is fixed to C nail and D nail and connecting rod 1 respectively. As can be seen from fig. 1, the distal multidimensional fixing member 5 has four dimensional adjustment amounts, namely: the fixing device is adjusted in an axial translation mode along the connecting rod, adjusted in a rotation mode along the connecting rod, adjusted in a lifting mode along the fixing nail and capable of moving left and right relative to the fixing piece 5. As long as the distal fixing nails are located within the adjustment range of the distal multidimensional fixing member 5, the two distal fixing nails can be adjusted and fixed by the distal multidimensional fixing member 5.
Therefore, the external fixing frame can implant two fixing nails aiming at two ends of the fracture respectively, and can reset and fix the fracture part through one connecting rod and four connecting pieces, compared with the structure of a plurality of connecting rods and a plurality of universal joints which are frequently used in the existing external fixing frame for the fracture, the external fixing frame has the advantages that the structure is very simplified, the operation process is simple, and compared with the installation assembly of the external fixing frame for the fracture with the publication number of CN 109009372A, the external fixing frame for the fracture also simplifies the operation difficulty and the number of application components on the basis of the simplification of the structure.
Based on the above structural features and application features, the present embodiment also has at least the structural relationship of the various pin locations mating connections as shown in fig. 5. As shown in fig. 5, it is an ideal situation that A, B, C, D four nails are aligned, and the head end fixing member 3 and the tail end multi-dimensional fixing member 4 are installed and fixed respectively. As shown in fig. 5, at this time, the connecting line of the nail a and the nail B is not coincident with or parallel to the connecting line of the nail C and the nail D, that is, the extension lines are intersected, after the head end of the connecting rod 1 is fixed by the head end fixing piece 3, the distances between the tail end of the connecting rod 1 and the nail C and the nail D are different, at this time, the connecting rod can be respectively fixed with the nail C and the nail D by adjusting the angular positions of the two tail end multidimensional connecting pieces, and finally, the same connecting rod and four fixing nails are fixed into a whole. As shown in fig. 5, when the deviation degree of the C nail and the D nail at the tail end is large, the C nail and the D nail can be fixed by adjusting the direction of the multidimensional connecting block 5 at the tail end, so that the nails are fixedly connected with the same connecting rod. As shown in the fourth step of fig. 5, the connecting line of the nail a and the nail B is parallel or approximately parallel to the connecting line of the nail C and the nail D, but the circumferential distance is far, the nail C and the nail D can be fixed by adjusting the direction of the multidimensional connecting block 5 at the tail end, and the nails are fixedly connected with the same connecting rod.
On the basis of embodiment 1, after the upper and lower locking nuts of the fixing member 3 are fixed, the upper and lower locking nuts press the locking seam 32, so that the fixing member 3 is clamped outside the connecting rod, and at the moment, the fixing nail and the connecting rod are locked. In order to improve the locking degree of the fixing member and the connecting rod, convex and concave grains along the axial direction can be arranged in the connecting rod through hole 31 of the fixing member, or convex and concave grains are arranged on the outer side of the connecting rod, so that after the fixing member is locked, the absolute locking relation between the fixing member and the connecting rod is achieved.
Example 2: a single-rod four-nail fracture external fixing frame with fixed head ends and adjustable tail ends structurally comprises two head end fixing structures, two head end fixing nails 2, two tail end multidimensional fixing pieces 5 and two fixing nails 2, and is shown in figures 8 and 9.
As can be seen from the figure, the head end fixing structure is that at least two through holes are formed in the head end of the connecting rod in a penetrating mode, and after the two fixing nails at the head end penetrate through the corresponding through holes respectively, the fixing nails are fixed on the upper side and the lower side of each through hole through locking nuts respectively. The lower end of the rod body of the four fixing nails 2 is provided with a self-tapping thread section 21 which is screwed into the bone, and the upper section is provided with a thread section 22.
The outer sides of the fixing nails at the tail end are respectively fixed at the tail end of the connecting rod through a tail end multidimensional fixing piece 5. Specifically, a connecting rod through hole 51 is formed in one side of the body of the tail end multi-dimensional fixing piece 5 and used for installing a connecting rod, a locking slit 52 is formed in one side of the connecting rod through hole 51 and used for locking the connecting rod, and a penetrating flat nail hole 53 is formed in the position perpendicular to the connecting rod through hole 51 and used for installing a fixing nail. The threaded section 22 of the fixing nail is provided with a nut at two sides of the nail penetrating round hole 53 for pressing the locking seam 52.
This embodiment achieves a similar function to embodiment 1, although in this embodiment the two fixing structures at the head end have a limited degree of adjustment, i.e. only adjustment along the pins. The two distal multidimensional fixing members 5 provide a sufficient multidimensional adjustment function and degree so that the present embodiment also enables a fixed connection to be made to various distributions of four fixation nails as shown in fig. 5.
Example 3: in the embodiment 1, the connecting rod in the embodiment has a curved arc 9 in the middle of the straight connecting rod. As shown in FIG. 10, the condition that the A nail and the B nail are parallel and the C nail and the D nail are parallel is still satisfied, but the A nail and the B nail on the two sides are simultaneously inclined outwards, and the C nail and the D nail are simultaneously inclined outwards, so that the A, B, C, D four nails cannot be fixed into a whole only by adopting a straight connecting rod. But the included angle alpha of the connecting rod through hole extension line of the nail A, the connecting rod through hole extension line of the nail B and the connecting rod through hole extension line of the nail C, the nail D can be easily determined, so that the A, B, C, D four nails can be fixed into a whole by only bending the straight connecting rod to the arc of the included angle alpha by means of an angle bending tool. Further, the same structural performance as in example 1 was achieved.
Example 4: in the embodiment 1, the connecting rod in the embodiment has a curved arc 9 in the middle of the straight connecting rod. As shown in FIG. 11, the parallel of the A nail and the B nail and the parallel of the C nail and the D nail are still satisfied, but the A nail and the B nail on both sides are simultaneously inclined inwards, and the C nail and the D nail are simultaneously inclined inwards, so that the A, B, C, D four nails cannot be fixed into a whole by only adopting the straight connecting rod. But the included angle beta of the connecting rod through hole extension line of the nail A, the connecting rod through hole extension line of the nail B and the connecting rod through hole extension line of the nail C, the nail D can be easily determined, so that the A, B, C, D four nails can be fixed into a whole by bending the straight connecting rod to the arc of the included angle beta only by means of an angle bending tool. Further, the same structural performance as in example 1 was achieved.
Example 5: a single-rod four-nail external fixing frame with adjustable head end and tail end is disclosed, as shown in figure 12, and comprises two head end multi-dimensional fixing pieces and two fixing nails 2, two tail end multi-dimensional fixing pieces 5 and two fixing nails 2, wherein the head end multi-dimensional fixing pieces and the tail end multi-dimensional fixing pieces 5 can be identical and adopt the structural form as shown in figure 3. The lower end of the rod body of the four fixing nails 2 is provided with a self-tapping thread section 21 which is screwed into the bone, and the upper section is provided with a thread section 22.
The multi-dimensional fixed part of head end and the multi-dimensional fixed part of end 5, there is the connecting rod perforation 51 on its main part one side for installing the connecting rod, and there is locking seam 52 on one side of connecting rod perforation 51 for locking the connecting rod, perpendicular to connecting rod perforation 51 there is flat hole of through-going nail 53 for installing the staple. The threaded section 22 of the fixing nail is provided with a nut at two sides of the nail penetrating round hole 53 for pressing the locking seam 52.
Thus, the head and tail multidimensional mounts 5 have four dimensional adjustments, respectively, namely: the fixing device is axially translated along the connecting rod, rotated along the connecting rod, lifted along the fixing nail and moved left and right relative to the fixing piece. As long as the head-end fixing nails are located in the adjusting range of the head-end multi-dimensional fixing piece, the two head-end fixing nails can be adjusted and fixed through the head-end multi-dimensional fixing piece, and similarly, as long as the tail-end fixing nails are located in the adjusting range of the tail-end multi-dimensional fixing piece 5, the two tail-end fixing nails can be adjusted and fixed through the tail-end multi-dimensional fixing piece 5.
The present embodiment at least includes the structural features and application features of the external fixing frame in embodiment 1 through the above external fixing frame. This example also has at least the structural relationship of the various pin site mating connections shown in fig. 13. As shown in fig. 13, it is an ideal state that A, B, C, D four nails are aligned, and the head end fixing member 3 and the tail end multi-dimensional fixing member 4 are installed and fixed respectively. As shown in fig. 13, at this time, the connecting line of the nail a and the nail B is not coincident with or parallel to the connecting line of the nail C and the nail D, that is, the extension lines are intersected, after the head end of the connecting rod 1 is fixed by the head end fixing piece 3, the distances between the tail end of the connecting rod 1 and the nail C and the nail D are different, at this time, the connecting rod can be respectively fixed with the nail C and the nail D by adjusting the angular positions of the two tail end multidimensional connecting pieces, and finally, the same connecting rod and four fixing nails are fixed into a whole. As shown in fig. 13, the connecting line of the nail a and the nail B is parallel or approximately parallel to the connecting line of the nail C and the nail D, and the nail C and the nail D can be fixed by adjusting the direction of the head multidimensional fixing piece and/or the tail multidimensional connecting block 5, so that the nails are fixedly connected with the same connecting rod. As shown in the fourth step in fig. 13, when the deviation degree of the C nail and the D nail at the tail ends is large, the C nail and the D nail can be fixed by adjusting the direction of the tail end multidimensional connecting block 5, so that the nails are fixedly connected with the same connecting rod. If the connecting line of the nail A and the nail B is parallel or approximately parallel to the connecting line of the nail C and the nail D, but the circumferential distance is far, the nail C and the nail D can be fixed by adjusting the direction of the multidimensional connecting block 5 at the tail end, so that each nail is fixedly connected with the same connecting rod.
On the basis of embodiment 1, after the upper and lower locking nuts of the multidimensional connecting block are fixed, the upper and lower locking nuts press the locking seam 52, so that the multidimensional connecting block is clamped and fixed on the outer side of the connecting rod, and at the moment, the fixing nail and the connecting rod are locked. To improve the locking of the fixing member to the connecting rod, a convex-concave pattern may be provided in the connecting rod through hole 51 of the fixing member in the axial direction, or a convex-concave pattern may be provided on the outer side of the connecting rod, so that after the fixing member is locked, an absolute locking relationship is achieved between the fixing member and the connecting rod.
Example 6: the above embodiments describe the case of parallel A and B nails and parallel C and D nails, however, in practice, A, B, C, D has four nails in the plane OA、OB、OC、ODFour planes are respectively vertical to the axis of the connecting rod as long as O is satisfiedA∥OBAnd O isA∥OBThe function of positioning and fixing the fracture part by four nails and one connecting rod as described in example 1 can be realized. Since the multi-dimensional connecting block has the connecting rod through hole 51 and can be adjusted by rotating along the connecting rod as shown in FIG. 7, and the multi-dimensional connecting block can be lifted and adjusted in distance and distance relative to the fixing nail, O shown in FIG. 12 is satisfiedA∥OBAnd O isA∥OBThe external fixing frame of the invention can realize the transverse fixing of the single connecting rod for various nailing situations as shown in figure 15.
Claims (6)
1. The single-rod four-nail external fixation frame for fracture is characterized by comprising two head end fixing structures, corresponding fixing nails (2), at least two tail end multi-dimensional fixing pieces (5) and corresponding fixing nails (2), wherein the outer sides of the two fixing nails at the head end are used for fixing the head ends of connecting rods respectively through the head end fixing structures, and the outer sides of the fixing nails at the tail end are used for fixing the tail ends of the connecting rods respectively through the tail end multi-dimensional fixing pieces (5); the lower end of the rod body of the fixing nail (2) is provided with a self-tapping screw section (21) which is screwed into a bone, and the upper section of the rod body is provided with a screw thread section (22); a connecting rod through hole (51) is formed in one side of the main body of the tail end multi-dimensional fixing piece (5) and used for installing a connecting rod, a locking seam (52) is formed in one side of the connecting rod through hole (51) and used for locking the connecting rod, and a penetrating nail flat hole (53) is formed in a position perpendicular to the connecting rod through hole (51) and used for installing a fixing nail; the thread section (22) of the fixing nail is positioned at two sides of the nail penetrating flat hole (53) and is respectively provided with a nut for pressing and locking the seam (52).
2. The external single-rod four-nail fracture fixation frame according to claim 1, wherein the head end fixation structure adopts a head end fixation piece (3), one side of the main body of the head end fixation piece (3) is provided with a through connecting rod through hole (31) for installing a connecting rod, one side of the connecting rod through hole (31) is provided with a locking seam (32) for locking the connecting rod, a through nail through hole (33) which is vertical to the connecting rod through hole (31) is provided for installing a fixation nail, and the thread section (22) of the fixation nail is positioned at two sides of the through nail through hole (33) and is respectively provided with a locking nut for pressing the locking seam (32).
3. The external single-rod four-nail fracture fixation frame according to claim 1, wherein the first end fixation structure is formed by at least two through holes at the first end of the connecting rod, and after the two fixation nails at the first end are respectively passed through the corresponding through holes, the fixation nails are fixed by nuts respectively positioned at the upper and lower sides of each through hole.
4. The external single-rod four-nail fracture fixation frame according to claim 1, wherein the head-end fixation structure adopts a head-end multi-dimensional fixation piece, a connecting rod through hole (51) is formed in one side of the main body of the head-end multi-dimensional fixation piece and used for installing a connecting rod, a locking seam (52) is formed in one side of the connecting rod through hole (51) and used for locking the connecting rod, and a penetrating nail flat hole (53) is formed in the position perpendicular to the connecting rod through hole (51) and used for installing a fixation nail; the thread section (22) of the fixing nail is positioned at two sides of the nail penetrating flat hole (53) and is respectively provided with a nut for pressing and locking the seam (52).
5. The external single-rod four-nail fracture fixation frame according to claim 1, wherein said connecting rod is a straight connecting rod or has a curved arc in the middle of the straight connecting rod.
6. The external single-rod four-nail fracture fixation frame according to claim 1, wherein convex-concave lines are provided in the through holes of the connecting rods of the fixation members along the axial direction, or convex-concave lines are provided outside the connecting rods for improving the locking degree between the fixation members and the connecting rods.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011459661.2A CN112472262A (en) | 2020-12-11 | 2020-12-11 | Single-rod four-nail external fixing frame for fracture |
| PCT/CN2021/128023 WO2022121556A1 (en) | 2020-12-11 | 2021-11-02 | Single-rod four-nail external fixator for fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011459661.2A CN112472262A (en) | 2020-12-11 | 2020-12-11 | Single-rod four-nail external fixing frame for fracture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112472262A true CN112472262A (en) | 2021-03-12 |
Family
ID=74916754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011459661.2A Pending CN112472262A (en) | 2020-12-11 | 2020-12-11 | Single-rod four-nail external fixing frame for fracture |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112472262A (en) |
| WO (1) | WO2022121556A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113288381A (en) * | 2021-05-31 | 2021-08-24 | 河北省胸科医院 | Combined external fixing frame for fracture and using method thereof |
| CN113288382A (en) * | 2021-06-18 | 2021-08-24 | 中国人民解放军联勤保障部队第九〇九医院 | Minimally invasive universal repositor for long bone fracture |
| WO2022121556A1 (en) * | 2020-12-11 | 2022-06-16 | 陈聚伍 | Single-rod four-nail external fixator for fracture |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB567715A (en) * | 1943-05-18 | 1945-02-28 | Roger Anderson | Fracture splints |
| US4483334A (en) * | 1983-04-11 | 1984-11-20 | Murray William M | External fixation device |
| CN2126055U (en) * | 1992-06-11 | 1992-12-30 | 王东来 | Mini-size external fixer |
| FR2787697B1 (en) * | 1998-12-29 | 2001-06-15 | France Etat | MONOLATERAL ORTHOPEDIC EXTERNAL FIXATION DEVICE FOR BONE FRACTURE IMMOBILIZATION |
| CN2643848Y (en) * | 2003-06-13 | 2004-09-29 | 罗伟初 | Single-side external bone fixing device |
| US9427259B2 (en) * | 2014-10-01 | 2016-08-30 | Foot Innovations, Llc | Anatomic external fixation system |
| CN105147375B (en) * | 2015-06-18 | 2017-10-24 | 张平 | Pelvic fracture closed reduction combination tool |
| CN105877824A (en) * | 2016-04-01 | 2016-08-24 | 北京良之介医疗科技有限公司 | Micro lock external fixing device for treating hand or foot bone fracture |
| CN109009372B (en) * | 2018-08-20 | 2023-07-25 | 陈聚伍 | External fixing frame installation component for fracture |
| CN112472262A (en) * | 2020-12-11 | 2021-03-12 | 陈聚伍 | Single-rod four-nail external fixing frame for fracture |
| CN215018733U (en) * | 2020-12-11 | 2021-12-07 | 陈聚伍 | Single-rod four-nail external fixing frame for fracture |
-
2020
- 2020-12-11 CN CN202011459661.2A patent/CN112472262A/en active Pending
-
2021
- 2021-11-02 WO PCT/CN2021/128023 patent/WO2022121556A1/en active Application Filing
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022121556A1 (en) * | 2020-12-11 | 2022-06-16 | 陈聚伍 | Single-rod four-nail external fixator for fracture |
| CN113288381A (en) * | 2021-05-31 | 2021-08-24 | 河北省胸科医院 | Combined external fixing frame for fracture and using method thereof |
| CN113288382A (en) * | 2021-06-18 | 2021-08-24 | 中国人民解放军联勤保障部队第九〇九医院 | Minimally invasive universal repositor for long bone fracture |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022121556A1 (en) | 2022-06-16 |
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