CN211796803U - Standard gamma femoral intramedullary nail - Google Patents
Standard gamma femoral intramedullary nail Download PDFInfo
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- CN211796803U CN211796803U CN201921808008.5U CN201921808008U CN211796803U CN 211796803 U CN211796803 U CN 211796803U CN 201921808008 U CN201921808008 U CN 201921808008U CN 211796803 U CN211796803 U CN 211796803U
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Abstract
The utility model discloses a standard gamma femoral intramedullary nail, which comprises a nail body and a lag screw, the needle body comprises a rod body and an anti-drop tail part, the rod body is arc-shaped, the front end of the rod body is provided with a front end locking hole, and the front end locking hole is provided with a plurality of groups, the tail end of the rod body is provided with an anti-falling tail part, the anti-falling tail part and the rod body are of an integrally formed structure, the needle body is internally provided with a through cavity, the needle body is positioned on the anti-falling tail part and is provided with an inclined inserting hole, the lag screw penetrates through the inclined inserting hole, the utility model arranges the inclined inserting hole on the anti-falling tail part of the needle body and inserts the lag screw into the inclined inserting hole to insert the lag screw into the femoral head, the needle body can be further fixed, the tail end of the needle body is prevented from moving upwards, and when fracture occurs between the femoral head and the greater trochanter, the fracture can be treated by fixing the needle body through the lag screw.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to a standard gamma femoral intramedullary nail.
Background
Intramedullary nails belong to orthopedic internal fixation instruments in medical instruments. The near end of the intramedullary nail rod is provided with a near end locking screw hole, and the surface of the intramedullary nail rod is provided with a pressure reducing plane. More than one strip-shaped decompression plane is arranged on the surface of the intramedullary nail rod, and the decompression plane can extend from the proximal end of the intramedullary nail rod to the distal end of the intramedullary nail rod. The proximal end of the intramedullary nail rod is provided with a locking screw rod positioning screw hole and a connecting sleeve positioning groove. When treating femoral fracture, a gamma intramedullary nail is generally adopted, and the existing gamma intramedullary nail generally comprises: a main nail, a lag screw and two horizontal locking screws.
The existing lag screw usually adopts a bolt with a grain on a single surface, the lag screw is an integral piece, and when the lag screw is screwed into a femur, the state of the lag screw can not be adjusted, which is not beneficial to the actual requirement of the fracture operation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a standard form gamma femoral intramedullary nail to solve among the above-mentioned background art current lag screw of femoral intramedullary nail and adopt the bolt that the single surface is equipped with the line usually, lag screw is an integral piece, and lag screw is when nailing into the thighbone, and lag screw's state can not be adjusted, is unfavorable for the problem of the actual demand of fracture operation.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a standard type gamma thighbone intramedullary nail, includes needle body and lag screw, the needle body includes the body of rod and anticreep afterbody, the body of rod is the arc, the front end of the body of rod is equipped with front end locking hole to and front end locking hole is equipped with the multiunit, the tail end of the body of rod is equipped with the anticreep afterbody, anticreep afterbody and the body of rod are the integrated into one piece structure, the intra-needle is equipped with logical chamber, the needle body is located the anticreep afterbody and has seted up oblique mortise hole, lag screw runs through oblique mortise hole.
Preferably, lag screw mainly comprises the fixed cover of lag screw, lag screw bolt, outer tube and lag screw sealing cap, the lag screw bolt cover is in the outer tube, and lag screw bolt activity sets up in the outer tube, one side that the outer tube is located the lag screw bolt is equipped with the fixed cover of lag screw, the fixed cover outer wall of lag screw is equipped with the screw thread line, the fixed cover of lag screw and outer tube inner wall threaded connection, be equipped with the lag screw overcoat in the fixed cover of lag screw, lag screw overcoat and lag screw bolt swing joint, the tail end at the lag screw bolt is connected to the lag screw sealing cap.
Preferably, the outer wall of the tail end of the tension screw outer sleeve is provided with a spiral half groove, the tail end of the tension screw bolt is provided with a spiral convex half ring matched with the spiral half groove, and the spiral convex half ring is arranged in the spiral half groove after the tension screw outer sleeve rotates clockwise.
Preferably, the tension screw outer sleeve is in threaded connection with the tension screw fixing sleeve.
Preferably, the rod body is provided with a lengthened needle rod and a standard needle rod, the length of the lengthened needle rod is larger than that of the standard needle rod, the length of the lengthened needle rod is 15-20 cm, and the length of the standard needle rod is 10-11 cm.
Preferably, the tail end of the standard needle rod is provided with a spiral groove in a winding mode, and the front end locking hole of the standard needle rod is located behind the spiral groove.
The utility model provides a standard type gamma femoral intramedullary nail possesses following beneficial effect:
(1) the utility model discloses a set up oblique mortise hole on the anticreep afterbody of needle body to alternate lag screw in oblique mortise hole, insert the femoral head with lag screw, can further fix the needle body, help preventing that the needle body tail end from shifting up, and when taking place the fracture between femoral head and the greater trochanter, usable lag screw fixes, reaches the purpose of treatment fracture.
(2) The tension screw bolt at the tail end of the tension screw sealing cap is movably arranged in the outer sleeve, the tail end of the tension screw bolt is connected with the tension screw outer sleeve through the spiral half groove and the spiral convex half ring, when the tension screw sealing cap is used, the tension screw outer sleeve is rotated clockwise, the spiral convex half ring can be screwed into the spiral half groove, the tension screw sealing cap is fixed and cannot be rotated, and the tension screw sealing cap can move by rotating the tension screw outer sleeve anticlockwise.
(3) The utility model discloses a set up the helicla flute at the extension needle bar front end of needle body, utilize the stress of helicla flute dispersibility extension needle bar, when using, prevent that extension needle bar atress from concentrating, the emergence fracture.
Drawings
FIG. 1 is a schematic view of the overall structure of the intramedullary nail of the present invention;
FIG. 2 is a schematic view of the needle body structure of the present invention;
FIG. 3 is a schematic view of the cross-sectional structure of the needle body of the present invention;
FIG. 4 is a schematic structural view of the lag screw of the present invention;
FIG. 5 is a schematic view of the tail end structure of the lag screw housing of the present invention;
FIG. 6 is a schematic view of the structure of the tail end of the lag screw bolt of the present invention;
fig. 7 is a schematic view of the structure of the needle body with the spiral groove of the present invention.
In the figure: 1. a lag screw fixing sleeve; 2. a lag screw outer sleeve; 3. a spiral half groove; 4. a spiral convex semi-ring; 5. a lag screw bolt; 6. an outer sleeve; 7. a lag screw sealing cap; 8. a helical pattern; 9. a lag screw; 10. lengthening the needle bar; 10-1, a standard needle bar; 11. a cavity is communicated; 12. a slanted latch hole; 13. an anti-drop tail part; 14. a front end locking hole; 15. a helical groove; 16. a needle body.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example 1
As shown in fig. 1-6, the utility model provides a technical solution: the utility model provides a standard type gamma femoral intramedullary nail, includes needle body 16 and lag screw 9, needle body 16 includes extension needle bar 10 and anticreep afterbody 13, extension needle bar 10 be the arc, the front end of extension needle bar 10 is equipped with front end locking hole 14 to and front end locking hole 14 is equipped with the multiunit, the tail end of extension needle bar 10 is equipped with anticreep afterbody 13, anticreep afterbody 13 and extension needle bar 10 are the integrated into one piece structure, be equipped with logical chamber 11 in the needle body 16, needle body 16 is located anticreep afterbody 13 and has seted up oblique mortise hole 12, lag screw 9 runs through oblique mortise hole 12.
Preferably, lag screw 9 mainly comprises the fixed cover of lag screw 1, lag screw bolt 5, outer tube 6 and lag screw sealing cap 7, 5 covers of lag screw bolt are in outer tube 6, and 5 activities of lag screw bolt set up in outer tube 6, one side that outer tube 6 is located lag screw bolt 5 is equipped with the fixed cover of lag screw 1, the fixed cover of lag screw 1 outer wall is equipped with the screw line, the fixed cover of lag screw 1 and 6 inner wall threaded connection of outer tube, be equipped with lag screw overcoat 2 in the fixed cover of lag screw 1, lag screw overcoat 2 and lag screw bolt 5 swing joint, lag screw sealing cap 7 is connected at the tail end of lag screw bolt 5.
Preferably, the outer wall of the tail end of the tension screw outer sleeve 2 is provided with a spiral half groove 3, the tail end of the tension screw bolt 5 is provided with a spiral convex half ring 4 matched with the spiral half groove 3, and the spiral convex half ring 4 is arranged in the spiral half groove 3 after the tension screw outer sleeve 2 rotates clockwise.
Preferably, the tension screw outer sleeve 2 is in threaded connection with the tension screw fixing sleeve 1.
The length of the lengthened needle rod 10 is 15-20 cm.
It is to be noted that, the standard gamma femur intramedullary nail,
when the femoral head and the femoral neck are fractured or fractured, the lengthened needle rod 10 of the needle body 16 is inserted into the femoral body from the greater trochanter, then the transverse locking nail is nailed into the femoral body from the side surface of the greater trochanter, so that the transverse locking nail penetrates through the greater trochanter and then penetrates through the tail end locking hole 3, then the lag screw 9 is nailed into the lateral surface of the greater trochanter, so that the lag screw 9 is inserted into the inclined insertion locking hole 7 of the anti-falling tail part 13, then the femoral neck and the femoral head are penetrated, the positions of the femoral head and the femoral neck are corrected by the lag screw 9, then the other group of transverse locking nails are nailed into the front end locking holes 14 of the lengthened needle rod 10, and the front ends of the lengthened needle rod 10 and the femoral body are fixed by the groups of the front end locking holes 14; when the lag screw 9 is screwed in, because the lag screw sealing cap 7 is connected on the lag screw bolt 5, then the lag screw bolt 5 is movably arranged in the outer sleeve 6, the other end thread of the outer sleeve 6 is screwed into the lag screw fixing sleeve 1, wherein a spiral half-groove 3 and a spiral convex half-ring 4 which are matched are arranged between the lag screw outer sleeve 2 in the lag screw fixing sleeve 1 and the top end of the lag screw bolt 5, when in use, the lag screw outer sleeve 2 is rotated clockwise, the spiral convex half-ring 4 at the bottom end of the lag screw outer sleeve 2 is screwed into the spiral half-groove 3 at the top end of the lag screw bolt 5, the lag screw bolt 5 and the screw outer sleeve 2 are fixed, so the lag screw bolt 5 can not move in the outer sleeve 6, the lag screw sealing cap 7 at the tail end of the lag screw bolt 5 is fixed, the lag screw outer sleeve 2 can not rotate anticlockwise, the spiral convex semi-ring 4 at the bottom end of the lag screw outer sleeve 2 can be separated from the spiral semi-groove 3 at the top end of the lag screw bolt 5, so that the lag screw bolt 5 can freely move in the outer sleeve 6, and the lag screw sealing cap 7 can movably rotate.
When a femoral shaft is fractured or fractured, the lengthened needle rod 10 of the needle body 16 is inserted into the femoral shaft from the greater trochanter, then a transverse locking nail is nailed from the side surface of the femoral shaft, the transverse locking nail penetrates through the femoral shaft and then penetrates through a front end locking hole 14 of the lengthened needle rod 10, wherein 2 groups of the front end locking hole 14 and the transverse locking nail are arranged, then the transverse locking nail is nailed from the side surface of the greater trochanter when the femoral shaft is positioned at the greater trochanter, the transverse locking nail penetrates through the greater trochanter and then penetrates through a tail end locking hole 3, and two ends of the lengthened needle rod 10 and the femoral shaft are fixed by utilizing a plurality of groups of the transverse locking nails without using a lag screw 9;
example 2
As shown in fig. 7, the utility model provides a technical solution: a standard gamma femoral intramedullary nail comprises a needle body 16 and a lag screw 9, wherein the needle body 16 comprises a standard needle rod 10-1 and an anti-falling tail part 13, the standard needle rod 10-1 is arc-shaped, a front locking hole 14 is formed in the front end of the standard needle rod 10-1, multiple groups of front locking holes 14 are formed in the front locking hole, the anti-falling tail part 13 is formed in the tail end of the standard needle rod 10-1, the anti-falling tail part 13 and the standard needle rod 10-1 are of an integrally formed structure, a through cavity 11 is formed in the needle body 16, an inclined insertion locking hole 12 is formed in the anti-falling tail part 13 of the needle body 16, and the lag screw 9 penetrates through the inclined insertion hole 12.
Preferably, lag screw 9 mainly comprises the fixed cover of lag screw 1, lag screw bolt 5, outer tube 6 and lag screw sealing cap 7, 5 covers of lag screw bolt are in outer tube 6, and 5 activities of lag screw bolt set up in outer tube 6, one side that outer tube 6 is located lag screw bolt 5 is equipped with the fixed cover of lag screw 1, the fixed cover of lag screw 1 outer wall is equipped with the screw line, the fixed cover of lag screw 1 and 6 inner wall threaded connection of outer tube, be equipped with lag screw overcoat 2 in the fixed cover of lag screw 1, lag screw overcoat 2 and lag screw bolt 5 swing joint, lag screw sealing cap 7 is connected at the tail end of lag screw bolt 5.
Preferably, the outer wall of the tail end of the tension screw outer sleeve 2 is provided with a spiral half groove 3, the tail end of the tension screw bolt 5 is provided with a spiral convex half ring 4 matched with the spiral half groove 3, and the spiral convex half ring 4 is arranged in the spiral half groove 3 after the tension screw outer sleeve 2 rotates clockwise.
Preferably, the tension screw outer sleeve 2 is in threaded connection with the tension screw fixing sleeve 1
Preferably, the length of the standard needle bar 10-1 is 10-11 cm.
Preferably, the tail end of the standard needle rod 10-1 is provided with a spiral groove 15, the spiral groove 15 is arranged in a winding manner, and the front end locking hole 14 of the standard needle rod 10-1 is located behind the spiral groove 15, namely the front end locking hole 14 is close to the anti-falling tail 13.
It should be noted that, the method of using the intramedullary nail with the standard needle rod 10-1 is substantially the same as the method of using the intramedullary nail with the elongated needle rod 10 in embodiment 1, and when the difference is that the spiral groove 15 is formed on the surface of the tail end of the standard needle rod 10-1, and the spiral groove 15 of the standard needle rod 10-1 is disposed at the front end of the front locking hole 14, in practical use, the spiral groove 15 is utilized to disperse the stress of the standard needle rod 10-1, so that when in use, the elongated needle rod 10 is prevented from being excessively stressed, the elongated needle rod 10 is broken, and the standard needle rod 10-1 is prevented from rotating in the femoral shaft, and in addition, the intramedullary nail with the standard needle rod 10-1 is suitable for the situation of the fracture position of the femoral shaft when being used for femoral shaft fracture or bone fracture.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A standard type gamma femoral intramedullary nail comprises a nail body (16) and a lag screw (9), and is characterized in that: needle body (16) are including the body of rod and anticreep afterbody (13), the body of rod be the arc, the front end of the body of rod is equipped with front end locking hole (14) to and front end locking hole (14) are equipped with the multiunit, the tail end of the body of rod is equipped with anticreep afterbody (13), anticreep afterbody (13) and the body of rod are the integrated into one piece structure, be equipped with logical chamber (11) in needle body (16), inclined plug-in hole (12) have been seted up on needle body (16) are located anticreep afterbody (13), inclined plug-in hole (12) are run through in lag screw (9).
2. The standard gamma intramedullary nail of claim 1, wherein: the lag screw (9) mainly comprises a lag screw fixing sleeve (1), a lag screw bolt (5), an outer sleeve (6) and a lag screw sealing cap (7), the lag screw bolt (5) is sleeved in the outer sleeve (6), and the lag screw bolt (5) is movably arranged in the outer sleeve (6), one side of the outer sleeve (6) positioned at the lag screw bolt (5) is provided with a lag screw fixing sleeve (1), the outer wall of the lag screw fixing sleeve (1) is provided with thread grains, the lag screw fixing sleeve (1) is in threaded connection with the inner wall of the outer sleeve (6), a lag screw outer sleeve (2) is arranged in the lag screw fixing sleeve (1), the lag screw outer sleeve (2) is movably connected with a lag screw bolt (5), the lag screw sealing cap (7) is connected to the tail end of the lag screw bolt (5).
3. The standard gamma intramedullary nail of claim 2, wherein: the outer wall of the tail end of the tension screw outer sleeve (2) is provided with a spiral half groove (3), the tail end of the tension screw bolt (5) is provided with a spiral convex semi-ring (4) matched with the spiral half groove (3), and the spiral convex semi-ring (4) is arranged in the spiral half groove (3) after the tension screw outer sleeve (2) rotates clockwise.
4. The standard gamma intramedullary nail of claim 2, wherein: the lag screw outer sleeve (2) is in threaded connection with the lag screw fixing sleeve (1).
5. The standard gamma intramedullary nail of claim 1, wherein: the rod body is provided with a lengthened needle rod (10) and a standard needle rod (10-1), the length of the lengthened needle rod (10) is larger than that of the standard needle rod (10-1), the length of the lengthened needle rod (10) is 15-20 cm, and the length of the standard needle rod (10-1) is 10-11 cm.
6. The standard gamma intramedullary nail of claim 5, wherein: the tail end of the standard needle rod (10-1) is provided with a spiral groove (15), the spiral groove (15) is arranged in a winding mode, and the front end locking hole (14) of the standard needle rod (10-1) is located behind the spiral groove (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921808008.5U CN211796803U (en) | 2019-10-25 | 2019-10-25 | Standard gamma femoral intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921808008.5U CN211796803U (en) | 2019-10-25 | 2019-10-25 | Standard gamma femoral intramedullary nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211796803U true CN211796803U (en) | 2020-10-30 |
Family
ID=73146740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921808008.5U Active CN211796803U (en) | 2019-10-25 | 2019-10-25 | Standard gamma femoral intramedullary nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211796803U (en) |
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2019
- 2019-10-25 CN CN201921808008.5U patent/CN211796803U/en active Active
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