CN211325513U - Internal fixing screw device for orthopedics department - Google Patents

Abstract

The utility model discloses an internal fixation screw device for orthopedics department, which comprises a bone nail, wherein the bone nail comprises a bone nail head part, a bone nail middle part and a bone nail lower part, the periphery of the bone nail lower part is provided with a thread in a left-handed direction, the center of the bone nail is provided with an axial bone nail through hole, the internal fixation screw device also comprises a fixed gasket, the center of the fixed gasket is provided with a bone nail limiting stepped hole for the bone nail middle part and the bone nail lower part to pass through and limiting the bone nail head part, and the fixed gasket is also provided with a fixed hole for a Kirschner wire to pass through; the utility model discloses the bone nail of well levogyration direction is used with the fixed bolster cooperation to pass the fixed orifices on the fixed bolster with the ke shi needle and fix the target location, realized the dual fixed of bone nail and ke shi needle, the other end at the position of fracture adopts conventional dextrorotation bone nail, the position both ends of fracture are levogyration and dextrorotation bone nail respectively like this, because two bone nails are revolved to consequently can not take place the displacement phenomenon on the contrary, the supplementary fixed of ke shi needle in addition, it is very firm, be favorable to the skeleton fast, grow the healing steadily.

Description

Internal fixing screw device for orthopedics department

Technical Field

The utility model relates to an orthopedics fixing device technical field especially relates to a fracture back orthopedics internal fixation screw device.

Background

The kirschner wire is a commonly used internal fixation material for orthopedics, the original specification of the kirschner wire is generally fixed at about twenty centimeters, the diameters of the kirschner wire and the kirschner wire are different in several specifications between 0.5 and 4 millimeters, the kirschner wire is used for fixing short fractures or avulsion fractures and other fractures with low stress, and is also commonly used for fixing temporary fracture blocks in orthopedic operations.

Bone nails are non-active surgical metal implants for osteosynthesis, consisting of cortical (full and half-threaded) and cancellous (full and half-threaded) bone nails, used to stabilize new fractures, revision surgeries, arthrodesis, and to reconstruct the ossicles of the foot, ankle and toe, for both adult and pediatric patients. The bone nail is usually used for fixing internal fracture or dislocation, and when the bone nail is used, the bone nail is directly screwed into two different bone blocks or internal implants such as a fixed bone plate and the like to realize the fixation of bones and promote the healing of an affected part. The general set screw thread direction is the dextrorotation on clinical treatment, if the both ends at fracture position use two dextrorotation set screws, often leads to fracture end to appear the displacement phenomenon, influences treatment, not only is unfavorable for skeleton fast, the healing of growing steadily, can cause the secondary damage in affected part moreover very likely, has seriously influenced patient's wound healing.

Disclosure of Invention

The utility model aims to solve the technical problem that an orthopedics internal fixation screw device which can avoid bone screw displacement slippage and is firm in fixation is provided.

In order to solve the technical problem, the technical scheme of the utility model is that: bone internal fixation screw device, including the bone nail, the bone nail includes bone nail head, bone nail middle part and bone nail lower part, bone nail lower part periphery is provided with the screw thread of levogyration direction, bone nail center department is provided with axial bone nail through-hole, still includes the retaining washer, the center of retaining washer is provided with the confession the bone nail middle part with the bone nail lower part passes and right the bone nail head carries out spacing shoulder hole of spacing bone nail, still be provided with the fixed orifices that supplies ke shi needle to pass on the retaining washer.

According to the preferable technical scheme, the bone nail limiting stepped hole penetrates through the upper surface and the lower surface of the fixing gasket, and comprises a bone nail head limiting hole located in the upper portion of the fixing gasket and a bone nail middle accommodating hole located in the lower portion of the fixing gasket.

According to the preferable technical scheme, the bone nail head limiting hole is a taper hole matched with the shape of the bone nail head, and the bone nail middle accommodating hole is a round hole through which the middle part of the bone nail and the lower part of the bone nail can pass.

As the preferred technical scheme, the axial bone nail through hole is a stepped hole which comprises a hexagonal hole and a small circular hole which are communicated up and down, the hexagonal hole penetrates through the head of the bone nail, and the small circular hole penetrates through the middle part and the lower part of the bone nail.

Preferably, the fixing pad is a circular pad.

Preferably, at least one fixing hole is formed in the fixing plate.

By adopting the technical scheme, the orthopedic internal fixation screw device comprises a bone nail, wherein the bone nail comprises a bone nail head, a bone nail middle part and a bone nail lower part, threads in the left-handed direction are arranged on the periphery of the bone nail lower part, an axial bone nail through hole is formed in the center of the bone nail, the orthopedic internal fixation screw device also comprises a fixing gasket, a bone nail limiting stepped hole for allowing the bone nail middle part and the bone nail lower part to penetrate and limiting the bone nail head is formed in the center of the fixing gasket, and a fixing hole for allowing a Kirschner wire to penetrate is formed in the fixing gasket; the utility model has the advantages that: the utility model discloses well levogyration direction the bone nail with the fixed gasket cooperation is used, makes the bone nail passes through fixed gasket the spacing shoulder hole fastening of bone nail is in the one end at the fracture position that needs to be fixed, then will fixed gasket round the bone nail is rotatory, makes the fixed orifices rotates needs the fixed position of ke shi needle will the ke shi needle passes the fixed orifices is fixed to the target location, has realized the bone nail with the dual fixed of ke shi needle adopts conventional dextrorotation bone nail at the other end at fracture position, and the both ends at fracture position are levogyration and dextrorotation respectively like this the bone nail, because two consequently can not take place the displacement phenomenon to the opposite bone nail soon, and in addition the supplementary fixed of ke shi needle, consequently fixed very firm is favorable to the bone to grow the healing fast, steadily.

Drawings

The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:

FIG. 1 is a schematic cross-sectional structural view of an embodiment of the present invention;

FIG. 2 is a schematic view of the main structure of a left-handed bone screw according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of a fixing pad according to an embodiment of the present invention.

Fig. 4 is a second schematic perspective view of a fixing pad according to an embodiment of the present invention.

In the figure: 1-a bone screw head; 2-middle part of bone nail; 3-the lower part of the bone nail; 4-fixing holes; 5-Kirschner wire; 6-fixing a gasket; 7-bone nail head limiting hole; 8-bone nail middle accommodating hole; 9-hexagonal holes; 10-small round hole.

Detailed Description

The invention is further explained below with reference to the drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

As shown in fig. 1 to 3, the orthopedic internal fixation screw device comprises a bone nail, the bone nail comprises a bone nail head 1, a bone nail middle part 2 and a bone nail lower part 3, the periphery of the bone nail lower part 3 is provided with a left-handed thread, an axial bone nail through hole is arranged at the center of the bone nail, the orthopedic internal fixation screw device further comprises a fixation gasket 6, a bone nail limiting stepped hole for the bone nail middle part 2 and the bone nail lower part to pass through and limit the bone nail head 1 is arranged at the center of the fixation gasket 6, and a fixation hole 4 for the kirschner wire 5 to pass through is also arranged on the fixation gasket 6; in the utility model, the bone nail in the left-handed direction is matched with the fixing gasket 6 to be used, so that the middle part 2 of the bone nail and the lower part 3 of the bone nail pass through the bone nail limit stepped hole, the head part 1 of the bone nail is limited in the fixing gasket 6 by the bone nail limit stepped hole, the middle part 2 of the bone nail and the lower part 3 of the bone nail are fastened at one end of the fracture part needing to be fixed, then the fixing gasket 6 rotates around the bone nail, so that the fixing hole 4 rotates to the part needing to be fixed by the kirschner wire 5, the kirschner wire 5 passes through the fixing hole 4 to be fixed to the target position, thereby realizing the double fixation of the bone nail and the kirschner wire 5, the other end of the fracture part adopts the conventional right-handed bone nail, thus the two ends of the fracture part are respectively left-handed and right-handed bone nail, and the displacement phenomenon can not occur because the two screw directions are opposite, and the auxiliary fixation of the kirschner wire 5 is also carried out, so that the fixation is very firm, and the rapid and stable growth and healing of the bone are facilitated.

The number of the fixing holes 4 may be one or more, and may be set according to actual conditions, as shown in fig. 4, when there are three fixing holes 4, only one kirschner wire 5 may be fixed when there is one fixing hole 4, and when there are a plurality of fixing holes 4, a plurality of kirschner wires 5 may be fixed at a plurality of positions, and the number and positions of the fixing holes 4 are not limited, and the fixing holes 4 may be randomly arranged on the fixing pad 6 or uniformly distributed on the fixing pad 6.

As shown in fig. 3, the bone screw limiting stepped hole penetrates through the upper and lower surfaces of the fixing pad 6, and includes a bone screw head limiting hole 7 located at the upper part of the fixing pad 6 and a bone screw middle accommodating hole 8 located at the lower part of the fixing pad 6. Spacing hole 7 in bone nail head is used for with fixed head is fixed and spacing, makes bone nail head 1 neither protrusion the upper surface of fixed shim 6 can hold again in the spacing hole 7 in bone nail head, bone nail middle part accommodation hole 8 is for letting bone nail middle part 2 with bone nail lower part 3 passes, and holds the upper segment in bone nail middle part 2 with bone nail head 1 links up the department.

As shown in fig. 3, the bone screw head limiting hole 7 is a taper hole adapted to the shape of the bone screw head 1, and the bone screw middle accommodating hole 8 is a circular hole for the bone screw middle 2 and the bone screw lower portion 3 to pass through. Because bone nail head 1 is the toper mostly, consequently will spacing hole 7 in bone nail head designs into the taper hole be convenient for with the better cooperation of bone nail head 1, the size of taper hole is greater than the size of bone nail head 1 certainly works as also can suitable adjustment when fixed head is other shapes the shape and the size of spacing hole 7 in bone nail head, the diameter of round hole is greater than bone nail middle part 2 with the external diameter of bone nail lower part is for the convenience bone nail middle part 2 with the bone nail lower part passes.

As shown in fig. 2, the axial bone screw through hole is a stepped hole, the stepped hole comprises a hexagonal hole 9 and a small circular hole 10 which are communicated up and down, the hexagonal hole 9 penetrates through the head part 1 of the bone screw, and the small circular hole 10 penetrates through the middle part 2 and the lower part 3 of the bone screw. The hexagonal hole 9 facilitates the cooperation with a fastening power device, facilitating the positioning when the bone screw is installed, the hexagonal hole 9 and the small circular hole 10 extending through the bone screw for facilitating the delivery of drugs or reinforcement material into the bone, the reinforcement material being any robust bone cement or bone graft or any other similar material.

As shown in fig. 3, the fixing pad 6 is a circular pad. The fixed shim 6 is circular, has no sharp corner, has reduced the secondary injury to the patient, in addition circular shim with the material of bone nail 1 is unanimous, can be metal material such as stainless steel, titanium alloy, but also with biodegradable absorbable material that polyglycolic acid (0SM) and polylactic acid (0KM) made. Fixed shim 6 can also be the bar gasket, fixed shim 6 adopts the bar, and the material can follow the circular shape fixed shim 6 is unanimous, and the convenient processing of bar gasket, the fillet is also carried out in the periphery of bar gasket, does not have sharp-pointed corner, has avoided the secondary injury to the patient.

The inner diameter of the fixing hole 4 is larger than the diameter of the Kirschner wire 5. The kirschner wire 5 can pass through the fixing hole 4 and then be fixed to a corresponding fracture part, the redundant part is reduced after the sufficient depth is reached, the end part is bent to avoid secondary damage to the skin, the kirschner wire 5 plays a role of auxiliary fixing, and the kirschner wire 5 is generally used for fixing short fracture, tear-off fracture and other low-stress fracture fixing and is also commonly used for fixing temporary fracture blocks in orthopedic operations. Due to wide application, the maximum diameter of the kirschner wire 5 is gradually increased to 4 mm, and the external fixing locking nail is matched to fix emergent large fractures such as pelvic fracture, calcaneal fracture and the like.

The utility model discloses a cooperation right-handed the one end at the fracture position that bone nail 1 used adopts the levogyration bone nail 1 fixes, adopts the right-handed at the other end at the fracture position bone nail 1 fixes, and both ends can pass through respectively fixed gasket 6 is supplementary fixed ke shi needle 5, consequently fixed very stable can not appear the displacement phenomenon, is favorable to the skeleton to grow the healing fast, steadily.

The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. Orthopedics internal fixation screw device, including the bone nail, its characterized in that: the bone nail includes bone nail head, bone nail middle part and bone nail lower part, bone nail lower part periphery is provided with the screw thread of levogyration direction, bone nail center department is provided with axial bone nail through-hole, still includes fixing gasket, fixing gasket's center is provided with the confession bone nail middle part with the bone nail lower part passes and is right bone nail head carries out spacing shoulder hole of spacing bone nail, still be provided with the fixed orifices that supplies ke shi needle to pass on the fixing gasket.

2. The orthopedic internal fixation screw device of claim 1, wherein: the spacing shoulder hole of bone nail runs through the upper and lower surface of retaining pad, the spacing shoulder hole of bone nail is including being located the spacing hole of bone nail head on retaining pad upper portion still including being located the bone nail middle part accommodation hole of retaining pad lower part.

3. The orthopedic internal fixation screw device of claim 2, wherein: the bone nail head limiting hole is a taper hole matched with the shape of the bone nail head, and the bone nail middle accommodating hole is a round hole for the middle part and the lower part of the bone nail to pass through.

4. The orthopedic internal fixation screw device of claim 1, wherein: the axial bone nail through hole is a stepped hole, the stepped hole comprises a hexagonal hole and a small circular hole which are communicated from top to bottom, the hexagonal hole penetrates through the head of the bone nail, and the small circular hole penetrates through the middle of the bone nail and the lower part of the bone nail.

5. The orthopedic internal fixation screw device of any of claims 1 to 4, wherein: the fixed gasket is a circular gasket.

6. The orthopedic internal fixation screw device of any of claims 1 to 4, wherein: at least one fixing hole is formed.

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