CN204468248U - Percutaneous lock screw - Google Patents
Percutaneous lock screw Download PDFInfo
- Publication number
- CN204468248U CN204468248U CN201520081337.XU CN201520081337U CN204468248U CN 204468248 U CN204468248 U CN 204468248U CN 201520081337 U CN201520081337 U CN 201520081337U CN 204468248 U CN204468248 U CN 204468248U
- Authority
- CN
- China
- Prior art keywords
- screw
- latch
- shank
- percutaneous
- screw head
- Prior art date
- 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
Links
Landscapes
- Prostheses (AREA)
Abstract
The utility model discloses a kind of percutaneous lock screw, comprise screw head 1, shank of screw portion 3 and the latch-up structure between screw head 1 and shank of screw portion 32, described latch-up structure 2 is provided with the screw thread closed with the corresponding threaded holes on steel plate.In order to reduce the damage to epiphysis, described screw head 1 is smooth threadless polished rod.Percutaneous lock screw described in the utility model, screw head 1 does not have screw thread, even if enter intraarticular or epiphysis, can not cause Continuous Damage, screw can take out screw at any time after callus grows up in addition, does not need anesthesia and operation, reduces the secondary injury to human body.
Description
Technical field
This utility model relates to a kind of percutaneous lock screw, belongs to technical field of medical instruments.
Background technology
Along with the increase of motor vehicles, the wound that vehicle accident causes also gets more and more.Fracture is common damage, and its treatment principle is reset, fixing and rehabilitation.After reaching better clinical healing and rehabilitation, do not affect suffering limb function, the therapeutic modality of generally acknowledging in the world is at present with the fixing fracture of operative reduction as far as possible.Conventional operation fixing means comprises the use implants such as intramedullary pin, steel plate or external fixer.The difference of method does not also mean which kind of therapeutic modality is best, but for certain type for the treatment of fracture most suitable because violence causes wound to there is randomness, the degree of grinding of fracture and position are different.Orthopedist is always exploring better therapeutic modality, constantly improves medical apparatus and instruments to obtain best expection.
When being positioned at the metaphysis of long bone when fracturing even fracture line involves articular surface, bone wound surgeon is all very vigilant.The first, nearly joint or involve the fracture in joint must anatomical reduction fixedly securing, otherwise the function of joint of postoperative rehabilitation can be affected.The second, because this kind of fracture is not suitable for intramedullary nail treatment, trans-articular extenal fixation can cause the reasons such as function of joint forfeiture, and the general steel plate that adopts treats (skin soft tissue conditions permit).
But there is following defect in current metaphysis locking steel plate: if the lock screw of 1 pole near articulation is all squeezed into according to the locking direction of steel plate, so screw very likely enters joint.This situation can hinder early postoperation exercise of joint function.Perhaps last union of fracture, patient but occurs that the situations such as ankylosis affect quality of life.2, for the minor of skeleton undeveloped mature, threaded screw very easily damages epiphysial cartilage, causes epiphysis to close in advance, causes both limbs to grow Asymmetry deformity etc.So surgical doctor is forced to select shorter lock screw or not in accordance with steel plate locking direction drivescrew, even abandon at this hole pinning more.It is insecure that these situations all can increase fracture fixation, the risk that steel plate or screw unbalanced stress and occurring ruptures, and consequence is serious.3, in addition because traditional lock screw all imbeds human body, when being taken out, needing the method by operation, people being known from experience and causes secondary injury.
Summary of the invention
For the defect of prior art, this utility model provides a kind of percutaneous lock screw, can reduce the damage to epiphysis, and easily take out, and reduces screw and enters the impact caused in joint.
In order to solve the technical problem, the technical solution adopted in the utility model is: a kind of percutaneous lock screw, comprise screw head, be positioned at the latch-up structure of screw head tail end, latch-up structure is provided with the screw thread closed with the corresponding threaded holes on steel plate, also comprise and conveniently take out screw and the shank of screw portion that arranges, shank of screw portion is connected to the tail end of latch-up structure, and described screw head is to reduce the smooth threadless polished rod to epiphyseal injury.
Further, described shank of screw portion is Intradermal part near latch-up structure place, and be the outer part of skin away from latch-up structure place, the afterbody of the outer part of skin is prismatic.
Further, described latch-up structure is the structure that its bottom surface of round platform that two bottom surface diameters are identical is docking together, and one of them round platform is connected with screw head, and side is provided with screw thread, and another round platform is connected with shank of screw portion.
Further, the maximum gauge of latch-up structure is all greater than the diameter in screw head and shank of screw portion.
According to the difference of fracture site, length and the diameter in screw head, shank of screw portion are also different, and the size of latch-up structure is corresponding with the screwed hole on steel plate.
The beneficial effects of the utility model: 1, screw head does not have screw thread, even if enter intraarticular or epiphysis, can not cause Continuous Damage.2, screw can take out screw at any time after callus grows up to, and does not need anesthesia and operation.3, take out early and enter the screw of joint or epiphysis, carry out suffering limb and not bear a heavy burden functional exercise, by bad for joint motion etc. may drop to minimum.4, the latch-up structure of screw is with the screw thread pressing locking steel plate design, can play locking action.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the E-E profile of figure;
In figure: 1, screw head, 2, latch-up structure, 3, shank of screw portion, 4, prismatic.
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiment this utility model be described further and limit.
As shown in Figure 1, a kind of percutaneous lock screw, comprises screw head 1, shank of screw portion 3 and the latch-up structure between screw head 1 and shank of screw portion 32, and described latch-up structure 2 is provided with the screw thread closed with the corresponding threaded holes on steel plate.In order to reduce the damage to epiphysis, described screw head 1 is smooth threadless polished rod.
Described shank of screw portion 3 is Intradermal part near latch-up structure 2 place, and be the outer part of skin away from latch-up structure 2 place, the afterbody of the outer part of skin is prismatic 4, in the present embodiment, is triangular prism.By the outer part of the skin of thread rod part 3, can directly percutaneous lock screw be taken out, without the need to passing through operation or anesthesia.
In the present embodiment, described latch-up structure 2 is the structure that its bottom surface of round platform that two bottom surface diameters are identical is docking together, and one of them round platform is connected with screw head 1, and side is provided with screw thread, and another round platform is connected with shank of screw portion 3.The maximum gauge of latch-up structure 2 is all greater than the diameter in screw head 1 and shank of screw portion 3.
According to the difference of fracture site, length and the diameter in screw head 1, shank of screw portion 3 are also different, and the size of latch-up structure 2 is corresponding with the screwed hole on steel plate.
According to the difference being suitable for fracture site, described percutaneous lock screw is divided into distal humerus type, proximal humerus type, distal radius type, distal femur type, proximal tibia type and distal tibial type, the length L in the diameter R1 of the screw head of its correspondence, the diameter R2 in shank of screw portion and shank of screw portion is respectively:
When lock screw as external steel plate, the length in shank of screw portion all can be set to 2cm.To screw is all imbedded Intradermal, screw can be designed to remove shank of screw portion 3 and prismatic 4, only retains the threaded portion of screw head 1 and latch-up structure 2, and at tail end design normal screws cutter bayonet socket.
It should be noted last that, above detailed description of the invention is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail this utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (4)
1. a percutaneous lock screw, comprise screw head (1), be positioned at the latch-up structure (2) of screw head (1) tail end, latch-up structure (2) is provided with the screw thread closed with the corresponding threaded holes on steel plate, it is characterized in that: also comprise and conveniently take out screw and the shank of screw portion (3) that arranges, shank of screw portion (3) is connected to the tail end of latch-up structure (2), and described screw head (1) is the smooth threadless polished rod that can reduce epiphyseal injury.
2. percutaneous lock screw according to claim 1, is characterized in that: described shank of screw portion (3) is Intradermal part near latch-up structure (2) place, and be the outer part of skin away from latch-up structure (2) place, the afterbody of the outer part of skin is prismatic (4).
3. percutaneous lock screw according to claim 1 and 2, it is characterized in that: described latch-up structure (2) is the structure that its bottom surface of round platform that two bottom surface diameters are identical is docking together, one of them round platform is connected with screw head (1), its side is provided with the screw thread closed with the corresponding threaded holes on steel plate, and another round platform is connected with shank of screw portion (3).
4. percutaneous lock screw according to claim 3, is characterized in that: the maximum gauge of described latch-up structure (2) is all greater than the diameter of screw head (1) and shank of screw portion (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520081337.XU CN204468248U (en) | 2015-02-05 | 2015-02-05 | Percutaneous lock screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520081337.XU CN204468248U (en) | 2015-02-05 | 2015-02-05 | Percutaneous lock screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204468248U true CN204468248U (en) | 2015-07-15 |
Family
ID=53623988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520081337.XU Expired - Fee Related CN204468248U (en) | 2015-02-05 | 2015-02-05 | Percutaneous lock screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204468248U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104546107A (en) * | 2015-02-05 | 2015-04-29 | 刘立峰 | Percutaneous locking screw |
-
2015
- 2015-02-05 CN CN201520081337.XU patent/CN204468248U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104546107A (en) * | 2015-02-05 | 2015-04-29 | 刘立峰 | Percutaneous locking screw |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20170107460A (en) | System and method for distraction | |
| CN204931821U (en) | Bridge joint internal fixation system outside proximal tibia | |
| CN105520777A (en) | Bone plate implanted from front inner side of distal femur | |
| CN202179588U (en) | Intramedullary nail for tibia | |
| CN203425021U (en) | Tubular drawing pressurizing connection rod control device and external fixator | |
| CN209220462U (en) | A kind of near end of thighbone Medullary fixation device | |
| CN200998302Y (en) | Limited dynamic pressurization hip screw device | |
| CN204468248U (en) | Percutaneous lock screw | |
| CN205411287U (en) | Self tapping type marrow internal fixation device suitable for long bone fracture | |
| CN205144700U (en) | Can effectively promote marrow internal fixation device of union | |
| CN103417280A (en) | Tubular traction pressurization connecting rod control device and outer-bone fixing device | |
| CN205107861U (en) | Thighbone rear internal fixation coaptation board | |
| CN201005773Y (en) | Femoral bone tuberosity locking hook board internal fixation system | |
| CN211409306U (en) | Bone handling device for tibial or femoral or humeral bone shortening, bone defects | |
| CN203815554U (en) | Distal tibia external fixation device | |
| CN105125266A (en) | Self-tapping intramedullary fixation device suitable for long bone fractures | |
| CN203953781U (en) | A kind of diaplasis device for femoral fracture | |
| CN104546107A (en) | Percutaneous locking screw | |
| CN208640865U (en) | Fractured near end of thighbone Medullary fixation device | |
| CN205924145U (en) | Inboard hone lamella of implanting before distal femoral | |
| CN205107981U (en) | Artifical hip joint prosthesis handle of fracture around treatment false body | |
| CN212213860U (en) | External aiming and positioning device for distal locking nail of intramedullary nail in orthopedics department | |
| CN208710038U (en) | A kind of power osteotomy screw suitable for different osteotomy angles | |
| CN108210047A (en) | Fractured near end of thighbone Medullary fixation device | |
| CN214318118U (en) | Fracture fixing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20200205 |