CN214805273U - Detachable femoral neck power anti-rotation cross nail structure - Google Patents
Detachable femoral neck power anti-rotation cross nail structure Download PDFInfo
- Publication number
- CN214805273U CN214805273U CN202120668696.0U CN202120668696U CN214805273U CN 214805273 U CN214805273 U CN 214805273U CN 202120668696 U CN202120668696 U CN 202120668696U CN 214805273 U CN214805273 U CN 214805273U
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- China
- Prior art keywords
- guide pin
- rotation
- positioning hole
- lower edge
- curved plate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 210000002436 femur neck Anatomy 0.000 title claims abstract description 22
- 230000006378 damage Effects 0.000 description 10
- 210000000527 greater trochanter Anatomy 0.000 description 5
- 210000000845 cartilage Anatomy 0.000 description 4
- 210000003041 ligament Anatomy 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 238000002513 implantation Methods 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 208000020089 femoral neck fracture Diseases 0.000 description 1
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Abstract
The utility model provides a detachable femoral neck power anti-rotation cross nail structure, detachable femoral neck power anti-rotation cross nail structure includes baffle body, registration arm and sleeve, limit structure, and the baffle body comprises first curved plate and second curved plate, and has seted up the locating hole on the baffle body, and the locating hole divide into anti guide pin locating hole of revolving, central guide pin locating hole and lower edge locating hole, and fixed mounting has the same three registration arm of external diameter on the baffle body, and all overlap on the three registration arm and be equipped with sliding connection's sleeve, and three registration arm includes anti guide pin registration arm, central guide pin registration arm and lower edge registration arm, and limit structure installs on the baffle body, the utility model provides a detachable femoral neck power anti-rotation cross nail structure has the advantage that can reduce the risk of operation.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially, relate to a detachable femoral neck power anti-rotation cross nail structure.
Background
Femoral neck fracture is common to old patients and accounts for 3.6% of total fracture, in order to fix the femoral neck bone during an operation, the novel technique of bone setting in hospitals at present is a femoral neck dynamic rotation-resistant cross nail System (FNS), the unique nail-in-nail design of the femoral neck dynamic rotation-resistant cross nail System can be used for minimally invasive implantation and stable rotation resistance, the phenomena of screw cutting, nail withdrawing and the like are rarely caused, before the nail is implanted and fixed, the implantation of the nail is simulated on one side of the femoral head and the greater trochanter, the angle of the implanted nail is roughly estimated, the operation is carried out, the simulated implantation of the nail greatly damages cartilage tissues and ligaments on the side of the femoral head and the greater trochanter, the damage recovery is slow, and the walking is possibly influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a detachable femoral neck power anti-rotation cross nail structure which can reduce the risk of the operation.
The utility model provides a detachable femoral neck power anti-rotation cross nail structure, include: the guide plate comprises a guide plate body, positioning pipes, sleeves and a limiting structure, wherein the three positioning pipes with the same outer diameter are fixedly arranged on the guide plate body, the three positioning pipes are sleeved with the sleeves in sliding connection, and each positioning pipe comprises an anti-rotation guide pin positioning pipe, a central guide pin positioning pipe and a lower edge positioning pipe; the limiting structure is installed on the guide plate body.
Preferably, the guide plate body is composed of a first curved plate and a second curved plate.
Preferably, limit structure includes first stop collar, first T-block, second T-block and third stop collar, first stop collar and first T-block fixed mounting are on first curved plate, second T-block and third stop collar fixed mounting are on the second curved plate, first stop collar and second T-block are located the anti top of revolving the guide pin registration pipe, and the internal diameter of first stop collar is the same with the diameter of second T-block, first T-block and third stop collar are located between central guide pin registration pipe and the lower edge registration pipe, and the diameter of first T-block is the same with the internal diameter of third stop collar.
Preferably, the guide plate body is provided with a positioning hole, the positioning hole is located at the junction of the first curved plate and the second curved plate, the positioning hole is divided into an anti-rotation guide pin positioning hole, a central guide pin positioning hole and a lower edge positioning hole, and the anti-rotation guide pin positioning hole, the central guide pin positioning hole and the lower edge positioning hole correspond to the anti-rotation guide pin positioning tube, the central guide pin positioning tube and the lower edge positioning tube respectively.
Preferably, the internal diameters of the anti-rotation guide pin positioning hole, the central guide pin positioning hole and the lower edge positioning hole are different, and the internal diameters of the anti-rotation guide pin positioning hole, the central guide pin positioning hole and the lower edge positioning hole are respectively the same as the internal diameters of the anti-rotation guide pin positioning tube, the central guide pin positioning tube and the lower edge positioning tube.
Preferably, threaded holes are formed in all the three positioning pipes, through holes are formed in all the three sleeves, threaded locking rods are inserted into the through holes, the threaded locking rods penetrate through the through holes and are inserted into the threaded holes, and the threaded locking rods are in threaded connection with the threaded holes.
Compared with the prior art, the utility model provides a detachable femoral neck power anti-rotation cross nail structure has following beneficial effect:
the utility model provides a detachable femoral neck power anti-rotation cross nail structure, when in use, a second T-shaped block is inserted in a first limit sleeve, the first T-shaped block is inserted in three limit sleeves, the trouble caused by dislocation of a first curved plate and a second curved plate is avoided, then, after a sleeve is sleeved on a positioning pipe, a thread locking rod is inserted into a through hole and screwed into a thread hole, the first curved plate and the second curved plate are fixed together, the first curved plate and the second curved plate are prevented from scattering, the image of a perspective instrument is watched, after the position of a guide plate body is determined, a guide pin is respectively inserted into the positioning pipe and passes through the positioning hole by using a tool, the guide pin is inserted into different parts of the guide plate, the work of roughly estimating the angle of the nail is not needed, the angle of the nail is enabled to be more accurate, the injury of the simulation nail to cartilage tissues and ligaments on the side surfaces of a femoral head and a greater trochanter is avoided, reduce the slow condition of patient's damage recovery, increased the successful probability of operation, after the operation, screw thread locking lever is twisted out, takes off the sleeve, takes off first curved plate and second curved plate to both sides, bumps the screw when avoiding the whole take off of baffle body, causes the secondary injury to the patient.
Drawings
Fig. 1 is a schematic structural view of a preferred embodiment of a detachable dynamic rotation-resistant cross-nail structure for a femoral neck according to the present invention;
FIG. 2 is a left side view of the structure of FIG. 1;
FIG. 3 is a schematic right-view structural diagram of FIG. 1;
FIG. 4 is a schematic bottom view of the structure of FIG. 1;
fig. 5 is a schematic view of the disassembled structure shown in fig. 1.
Reference numbers in the figures: 1. a guide plate body; 11. a first curved plate; 12. a second curved plate; 2. a positioning tube; 21. an anti-rotation guide pin positioning tube; 22. a central guide pin positioning tube; 23. a lower edge positioning tube; 3. a sleeve; 4. a limiting structure; 41. a first stop collar; 42. a first T-block; 43. a second T-block; 42. a third stop collar; 5. positioning holes; 51. positioning holes for anti-rotation guide pins; 52. a central guide pin positioning hole; 53. a lower edge positioning hole; 6. a threaded hole; 7. a through hole; 8. a threaded locking rod.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and embodiments.
Please refer to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5 in combination, wherein fig. 1 is a schematic structural view illustrating a preferred embodiment of a detachable dynamic rotation-resistant cross nail structure for a femoral neck according to the present invention; FIG. 2 is a left side view of the structure of FIG. 1; FIG. 3 is a schematic right-view structural diagram of FIG. 1; FIG. 4 is a schematic bottom view of the structure of FIG. 1; fig. 5 is a schematic view of the disassembled structure shown in fig. 1. The method comprises the following steps: the guide plate comprises a guide plate body 1, a positioning pipe 2, a sleeve 3 and a limiting structure 4.
In a specific implementation process, as shown in fig. 1, three positioning tubes 2 with the same outer diameter are fixedly mounted on a guide plate body 1, sleeves 3 in sliding connection are sleeved on the three positioning tubes 2, the guide plate body 1 is composed of a first curved plate 11 and a second curved plate 12, and the three positioning tubes 2 comprise an anti-rotation guide pin positioning tube 21, a central guide pin positioning tube 22 and a lower edge positioning tube 23; the limiting structure 4 is arranged on the guide plate body 1.
It should be noted that: each positioning tube 2 is divided into two parts, one part is arranged on the first curved plate 11, the other part is arranged on the second curved plate 12, and the positioning tube can be detached along with the guide plate body 1 after the sleeve 3 is taken down.
Referring to fig. 1, 2, 3 and 5, the position limiting structure 4 includes a first position limiting sleeve 41, a first t-shaped block 42, a second t-shaped block 43 and a third position limiting sleeve 44, the first position limiting sleeve 41 and the first t-shaped block 42 are fixedly mounted on the first curved plate 11, the second t-shaped block 43 and the third position limiting sleeve 44 are fixedly mounted on the second curved plate 12, the first position limiting sleeve 41 and the second t-shaped block 43 are located above the anti-rotation guide pin positioning tube 21, the inner diameter of the first position limiting sleeve 41 is the same as the diameter of the second t-shaped block 43, the first t-shaped block 42 and the third position limiting sleeve 44 are located between the central guide pin positioning tube 22 and the lower edge positioning tube 23, and the diameter of the first t-shaped block 42 is the same as the inner diameter of the third position limiting sleeve 44.
It should be noted that: when in use, the second T-shaped block 43 is inserted into the first limiting sleeve 41, and the first T-shaped block 42 is inserted into the third limiting sleeve 44, so that the trouble caused by the dislocation of the first curved plate 11 and the second curved plate 12 is avoided.
Referring to fig. 1, 2 and 5, threaded holes 6 are formed in all three positioning pipes 2, through holes 7 are formed in all three sleeves 3, threaded locking rods 8 are inserted into the through holes 7, the threaded locking rods 8 penetrate through the through holes 7 and are inserted into the threaded holes 6, and the threaded locking rods 8 are in threaded connection with the threaded holes 6. After the sleeve 3 is sleeved on the positioning tube 2, the threaded locking rod 8 is inserted into the through hole 7, the threaded locking rod 8 is screwed into the threaded hole, and the first curved plate 11 and the second curved plate 12 are fixed together, so that the first curved plate 11 and the second curved plate 12 are prevented from being scattered.
Referring to fig. 4 and 5, a positioning hole 5 is formed on the guide plate body 1, the positioning hole 5 is located at the junction of the first curved plate 11 and the second curved plate 12, the positioning hole 5 is divided into a rotation-resistant guide pin positioning hole 51, a central guide pin positioning hole 52 and a lower edge positioning hole 53, the rotation-resistant guide pin positioning hole 51, the central guide pin positioning hole 52 and the lower edge positioning hole 53 correspond to the rotation-resistant guide pin positioning tube 21, the central guide pin positioning tube 22 and the lower edge positioning tube 23, the inner diameters of the rotation-resistant guide pin positioning hole 51, the central guide pin positioning hole 52 and the lower edge positioning hole 53 are different, and the inner diameters of the rotation-resistant guide pin positioning hole 51, the central guide pin positioning hole 52 and the lower edge positioning hole 53 are the same as the inner diameters of the rotation-resistant guide pin positioning tube 21, the central guide pin positioning tube 22 and the lower edge positioning tube 23.
It should be noted that: during the use, look at the image of perspective appearance, confirm the position of baffle body 1 after, use the instrument with the guide pin inject respectively in the registration arm 2 and pass locating hole 5, insert and establish the different positions of bone, need not carry out the work of roughly estimating the angle of going into the nail, make the angle of going into the nail more accurate, the injury of nail to the cartilage tissue and the ligament of femoral head and greater trochanter side has been avoided simulating to go into, reduce the condition that the patient harms and resumes slowly, the probability of having increased the successful operation, after the operation, screw thread locking lever 8 is twisted out, take off sleeve 3, take off first curved plate 11 and second curved plate 12 to both sides, touch the screw when avoiding baffle body 1 whole taking off, cause the secondary damage to the patient.
The utility model provides a detachable femoral neck power anti-rotation cross nail structure's theory of operation as follows:
when in use, the second T-shaped block 43 is inserted into the first limiting sleeve 41, the first T-shaped block 42 is inserted into the third limiting sleeve 44, the trouble caused by the dislocation of the first curved plate 11 and the second curved plate 12 is avoided, then, after the sleeve 3 is sleeved on the positioning tube 2, the threaded locking rod 8 is inserted into the through hole 7, the threaded locking rod 8 is screwed into the threaded hole, the first curved plate 11 and the second curved plate 12 are fixed together, the first curved plate 11 and the second curved plate 12 are prevented from being scattered, the image of a perspective instrument is watched, after the position of the guide plate body 1 is determined, a guide pin is respectively inserted into the positioning tube 2 and passes through the positioning hole 5 by using a tool, the work of roughly estimating the angle of the nail is not needed, the angle of the nail is more accurate, the damage of the simulation nail to cartilage tissues and ligaments on the side surfaces of a femoral head and a greater trochanter is avoided, reduce the slow condition of patient's damage recovery, increased the successful probability of operation, after the operation, screw thread locking lever 8 is twisted out, takes off sleeve 3, takes off first curved plate 11 and second curved plate 12 to both sides, bumps the screw when avoiding 1 whole takedowns of baffle body, causes the secondary damage to the patient.
The above is only the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention can be used in other related technical fields, directly or indirectly, or in the same way as the present invention.
Claims (6)
1. The utility model provides a detachable femoral neck power anti-rotation cross nail structure which characterized in that includes:
the guide plate comprises a guide plate body (1), wherein three positioning tubes (2) with the same outer diameter are fixedly arranged on the guide plate body (1), sleeves (3) in sliding connection are sleeved on the three positioning tubes (2), and the three positioning tubes (2) comprise anti-rotation guide pin positioning tubes (21), a central guide pin positioning tube (22) and a lower edge positioning tube (23);
and the limiting structure (4) is arranged on the guide plate body (1).
2. The removable femoral neck dynamic anti-rotation cross pin structure according to claim 1, wherein the guide plate body (1) is composed of a first curved plate (11) and a second curved plate (12).
3. The removable femoral neck dynamic anti-rotation cross pin structure of claim 1, the limiting structure (4) comprises a first limiting sleeve (41), a first T-shaped block (42), a second T-shaped block (43) and a third limiting sleeve (44), the first limiting sleeve (41) and the first T-shaped block (42) are fixedly arranged on the first curved plate (11), the second T-shaped block (43) and the third limiting sleeve (44) are fixedly arranged on the second curved plate (12), the first stop collar (41) and the second T-shaped block (43) are positioned above the anti-rotation guide pin positioning tube (21), and the inner diameter of the first stop collar (41) is the same as the diameter of the second T-shaped block (43), the first T-shaped block (42) and the third limit sleeve (44) are positioned between the central guide pin positioning tube (22) and the lower edge positioning tube (23), and the diameter of the first T-shaped block (42) is the same as the inner diameter of the third limiting sleeve (44).
4. The detachable dynamic rotation-resistant cross nail structure for the femoral neck according to claim 1, wherein the guide plate body (1) is provided with a positioning hole (5), the positioning hole (5) is located at the junction of the first curved plate (11) and the second curved plate (12), the positioning hole (5) is divided into a rotation-resistant guide pin positioning hole (51), a central guide pin positioning hole (52) and a lower edge positioning hole (53), and the rotation-resistant guide pin positioning hole (51), the central guide pin positioning hole (52) and the lower edge positioning hole (53) correspond to the rotation-resistant guide pin positioning tube (21), the central guide pin positioning tube (22) and the lower edge positioning tube (23), respectively.
5. The detachable dynamic rotation-resistant cross nail structure for the femoral neck according to claim 4, wherein the rotation-resistant guide pin positioning hole (51), the central guide pin positioning hole (52) and the lower edge positioning hole (53) have different inner diameters, and the rotation-resistant guide pin positioning hole (51), the central guide pin positioning hole (52) and the lower edge positioning hole (53) have the same inner diameters as the rotation-resistant guide pin positioning tube (21), the central guide pin positioning tube (22) and the lower edge positioning tube (23), respectively.
6. The detachable dynamic rotation-resistant cross nail structure for the femoral neck according to claim 1, wherein three positioning tubes (2) are provided with threaded holes (6), three sleeves (3) are provided with through holes (7), threaded locking rods (8) are inserted into the through holes (7), the threaded locking rods (8) penetrate through the through holes (7) and are inserted into the threaded holes (6), and the threaded locking rods (8) are in threaded connection with the threaded holes (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120668696.0U CN214805273U (en) | 2021-04-01 | 2021-04-01 | Detachable femoral neck power anti-rotation cross nail structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120668696.0U CN214805273U (en) | 2021-04-01 | 2021-04-01 | Detachable femoral neck power anti-rotation cross nail structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214805273U true CN214805273U (en) | 2021-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120668696.0U Expired - Fee Related CN214805273U (en) | 2021-04-01 | 2021-04-01 | Detachable femoral neck power anti-rotation cross nail structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214805273U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114271920A (en) * | 2022-01-05 | 2022-04-05 | 张家港市第一人民医院 | Preparation method of 3D printing combined guide plate suitable for femoral neck system |
-
2021
- 2021-04-01 CN CN202120668696.0U patent/CN214805273U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114271920A (en) * | 2022-01-05 | 2022-04-05 | 张家港市第一人民医院 | Preparation method of 3D printing combined guide plate suitable for femoral neck system |
| CN114271920B (en) * | 2022-01-05 | 2023-09-19 | 张家港市第一人民医院 | Preparation method of 3D printing combined guide plate suitable for femoral neck system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211123 |
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| CF01 | Termination of patent right due to non-payment of annual fee |