CN203042419U - Anti-slipping hollow bone screw and matched screw driver - Google Patents
Anti-slipping hollow bone screw and matched screw driver Download PDFInfo
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- CN203042419U CN203042419U CN 201320058172 CN201320058172U CN203042419U CN 203042419 U CN203042419 U CN 203042419U CN 201320058172 CN201320058172 CN 201320058172 CN 201320058172 U CN201320058172 U CN 201320058172U CN 203042419 U CN203042419 U CN 203042419U
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- screw
- bone screw
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- recess
- union joint
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Abstract
The utility model relates to an anti-slipping hollow bone screw and a matched screw driver. The anti-slipping hollow bone screw comprises a screw rod and a screw cap, wherein the screw cap is provided with a groove, a concave mouth is formed in the middle portion of the groove downwardly and penetrates through the groove, and the concave mouth extends into the screw rod. The matched screw driver comprises a handle, a connecting rod and a tool bit, wherein the handle is arranged at one end of the connecting rod, the tool bit is arranged at the other end of the connecting rod, the tool bit comprises connectors and a connecting arm, the connectors are of a structure matched with the groove, and the connecting arm is of a structure matched with the concave mouth. The groove is formed in the screw cap, the concave mouth is formed in the middle portion of the groove downwardly and extends into the screw rod, the concave mouth is matched with the structure of the connecting arm of the matched screw driver, and a bone screw can be taken out easily. The anti-slipping hollow bone screw and the matched screw driver solve the problem that the bone screw is easy to slip and can not be taken out easily when the bone screw is screwed out.
Description
Technical field
This utility model relates to technical field of medical instruments, especially relates to a kind of anti-stripped thread hollow bone screw and screwdriver kit.
Background technology
Hollow bone screw technique for fixing is little, easy and simple to handle because of its damage, extensively applies to treat intertrochanteric fracture, ankle fracture etc.But because this type of bone screw mostly is Metal Substrate, should not be detained in the body for a long time, need second operation to take out more.Internal fixation screw clevis branch " one " font commonly used, " ten " font, interior hexagon and quincunx etc., these bone screw are that driver bit skids in screw cap screwing out at need common cause, and cause the reason of skidding have several down some: 1) wearing and tearing of screw clevis have just appearred when screwing in bone screw; 2) in the symphysis process, screw was combined closely with osseous tissue after several months even several years, so that taking out required torque before enlarges markedly, but the nut groove becomes more preceding smooth relatively through wearing and tearing and the tissue fluid corrosion of operation for the first time, often gets in the tack operation process and very easily takes out difficulty because tail medicated cap stripped thread, dropout cause screw; 3) operator's misoperation fails to make screwdriver to rotate at the bone screw axle, deviates from phenomenon to bone screw when screwing out, and makes the wearing and tearing of screw clevis, causes skidding.
If use special instrument such as vice, needle-nose pliers etc. to get nail by force, often get the nail difficulty because the jaw hold causes inadequately, and need to enlarge operating field more, increase the weight of soft tissue injury, increase and infect probability.If getting nail by force very easily causes the head of a nail to break, even broken nail may.Bone surgery position multiposition is darker, soft tissues such as the muscle of enriching, blood vessel, nerve are arranged on every side, exposed space is very limited, if broken nail is not added processing, local aseptic inflammation and deep infection take place very easily when causing in various degree psychological shade to patient, broken nail causes severe complications such as nervus vasculairs damage.If use the method for key reaming that bone screw is taken out, certainly will destroy key integrity, not only prolong operating time greatly, increase the patient suffering, and cause very easily that iatrogenic bone is damaged, fracture etc.Along with the development of Wicresoft's theory in the orthopaedics field, for reaching the purpose of disturbing the therapeutic effect that reaches best with the invasion and attack of minimum and minimum physiology, be necessary screw clevis and the screwdriver of the simple shape used in the existing bone surgery are improved.
How existing bone screw only carries out improvement design to screw tail end clevis if being improved one's methods, only increased the contact surface of screw tail end clevis, moment of torsion does not suitably disperse, especially application point still is confined near the screw tail end clevis, situations such as tail end clevis fracture degeneration very easily occur because of excessive torque under the screw tail end clevis, this kind improvement can not thoroughly solve existing simple property hollow screw design defect.
Summary of the invention
Based on this, being necessary provides a kind of anti-stripped thread hollow bone screw and screwdriver kit at the problem of above-mentioned background technology existence, and skidding easily when screwing out with the solution bone screw is difficult for the problem of taking-up.
For achieving the above object, the utility model discloses a kind of anti-stripped thread hollow bone screw, it comprises shank of screw and screw cap, and described screw cap offers groove, runs through offering recess in the middle part of the described groove downwards, and described recess extends in the described shank of screw.
Among embodiment, described recess extends to apart from 2 ~ 4mm place, described shank of screw tip therein.
Among embodiment, described groove is regular hexagon, square, " ten " font or the quincunx structure of hexagonal therein.
Among embodiment, described recess is regular hexagon or square structure therein.
For achieving the above object, the utility model discloses a kind of screwdriver kit, it comprises handle, connecting rod and cutter head, described handle is arranged on described connecting rod one end, described cutter head is arranged on the described connecting rod other end, and described cutter head comprises union joint and linking arm, and described linking arm is arranged on described union joint middle part, described union joint is the structure that coincide with groove, and described linking arm is the structure that matches with recess.
For achieving the above object, the utility model discloses a kind of anti-stripped thread hollow bone screw, it comprises shank of screw and screw cap, the inboard offers groove on the described screw cap, described screw cap outer ring is the gear-like structure, run through offering recess in the middle part of the described groove downwards, described recess extends in the described shank of screw.
Among embodiment, described recess extends to apart from 2 ~ 4mm place, described shank of screw tip therein.
Among embodiment, described groove is regular hexagon, square, " ten " font or " one " glyph construction therein.
For achieving the above object, the utility model discloses a kind of screwdriver kit, it comprises handle, connecting rod and cutter head, described handle is arranged on described connecting rod one end, described cutter head is arranged on the described connecting rod other end, and described cutter head comprises outer union joint and interior union joint, encloses the formation grooving between described outer union joint and the interior union joint, the outer loop-shaped of described cover groove shape and screw cap matches, and described interior union joint is the structure that coincide with groove.
Among embodiment, described cutter head also comprises linking arm therein, described linking arm be arranged on described in the union joint middle part, the structure of described linking arm for matching with recess.
In sum, the anti-stripped thread hollow bone screw of this utility model and screwdriver kit are by offering groove at screw cap, and in the middle part of groove, offer the recess that extends in the shank of screw downwards, the linking arm structure that cooperates screwdriver kit, can easily take out bone screw, solve bone screw and when screwing out, skidded easily and be difficult for the problem of taking out.
Description of drawings
Fig. 1 is the structural representation of the anti-stripped thread hollow bone screw of this utility model.
Fig. 2 is the profile of the anti-stripped thread hollow bone screw of this utility model shown in Figure 1.
Fig. 3 is the structural representation of this utility model screwdriver kit.
Fig. 4 is the structural representation of anti-another embodiment of stripped thread hollow bone screw of this utility model.
Fig. 5 is the structural representation of another embodiment of this utility model screwdriver kit.
The specific embodiment
For further understanding feature of the present utility model, technological means and the specific purposes that reach, function, below in conjunction with accompanying drawing and the specific embodiment this utility model is described in further detail.
Embodiment one
As shown in Figure 1 to Figure 3, the anti-stripped thread hollow bone screw of this utility model comprises shank of screw 10a and screw cap 20a, described shank of screw 10a tip has tapping screw thread, described screw cap 20a offers regular hexagon groove 21a, run through offering regular hexagon recess 11a in the middle part of the described groove 21a downwards, described recess 11a extends to apart from 2 ~ 4mm place, described shank of screw 10a tip.
This utility model screwdriver kit comprises handle 30a, connecting rod 40a and cutter head 50a, described handle 30a is arranged on described connecting rod 40a one end, described cutter head 50a is arranged on the described connecting rod 40a other end, described cutter head 50a comprises integrated union joint 51a and linking arm 52a, described linking arm 52a is arranged on described union joint 51a middle part, described union joint 51a is the regular hexagon structure that coincide with groove 21a, described linking arm 52a is the regular hexagon structure that matches with recess 11a, and described linking arm 52a length and recess 11a extend into the length coupling in the shank of screw 10a.
When this utility model uses, the bone screw of said structure is inserted in the human body, inserted in the bone screw by cutter head 50a, the rotation screwdriver kit can be controlled the bone screw approach axis.Can use the normal screws cutter when taking out bone screw, also can use the screwdriver kit with the bone screw structure matching, the normal screws cutter is got bone screw generation stripped thread, screw cap 20a breaks or broken nail if use, and uses screwdriver kit instead and is inserted into the inner rotary handle 30a of bone screw in the recess 11a and can easily takes out bone screw.
Embodiment two
As shown in Figure 4 and Figure 5, the anti-stripped thread hollow bone screw of this utility model comprises shank of screw 10b and screw cap 20b, described shank of screw 10b tip has tapping screw thread, described screw cap 20b goes up the inboard and offers regular hexagon groove 21b, described screw cap 20b outer ring is the gear-like structure, described screw cap 20b outer ring is arranged at intervals with seven teeth groove 22b, runs through offering regular hexagon recess 11b in the middle part of the described groove 21b downwards, and described recess 11b extends to apart from 2 ~ 4mm place, described shank of screw 10b tip.
This utility model screwdriver kit comprises handle 30b, connecting rod 40b and cutter head 50b, described handle 30b is arranged on described connecting rod 40b one end, described cutter head 50b is arranged on the described connecting rod 40b other end, described cutter head 50b comprises outer union joint 53b, interior union joint 51b and linking arm 52b, enclose between described outer union joint 53b and the interior union joint 51b and form grooving 54b, the outer loop-shaped of described grooving 54b shape and screw cap 20b matches, described linking arm 52b is arranged on described interior union joint 51b middle part, union joint 51b is the regular hexagon structure that coincide with groove 21b in described, described linking arm 52b is the regular hexagon structure that matches with recess 11b, and described linking arm 52b length and recess 11b extend into the length coupling in the shank of screw 10b.
When this utility model uses, the bone screw of said structure is inserted in the human body, insert in the bone screw by cutter head 50b when taking out screw, make that grooving 54b and screw cap 20b outer ring are chimeric, interior union joint 51b and groove 21b are chimeric, linking arm 52b and recess 11b are chimeric simultaneously, and rotary handle 30b can easily take out bone screw.
Embodiment three
Anti-stripped thread hollow bone screw in the anti-stripped thread hollow bone screw that the 3rd embodiment of the present utility model provides, itself and first embodiment is basic identical, and difference is: described groove shapes is square.
Embodiment four
Anti-stripped thread hollow bone screw in the anti-stripped thread hollow bone screw that the 4th embodiment of the present utility model provides, itself and first embodiment is basic identical, and difference is: described groove shapes is " ten " font.
Embodiment five
Anti-stripped thread hollow bone screw in the anti-stripped thread hollow bone screw that the 5th embodiment of the present utility model provides, itself and first embodiment is basic identical, and difference is: described groove shapes is that hexagonal is quincunx, and described recess shape is square.
Embodiment six
Anti-stripped thread hollow bone screw in the anti-stripped thread hollow bone screw that the 6th embodiment of the present utility model provides, itself and second embodiment is basic identical, and difference is: described groove shapes is " ten " font.
Embodiment seven
Anti-stripped thread hollow bone screw in the anti-stripped thread hollow bone screw that the 7th embodiment of the present utility model provides, itself and second embodiment is basic identical, and difference is: described groove shapes is " one " font.
Embodiment eight
The anti-stripped thread hollow bone screw that the 8th embodiment of the present utility model provides, anti-stripped thread hollow bone screw among itself and second embodiment is basic identical, difference is: described groove shapes is " ten " font, described screw cap outer ring is the gear-like structure, and described screw cap outer ring is arranged at intervals with nine teeth groove.
Embodiment nine
The anti-stripped thread hollow bone screw that the 9th embodiment of the present utility model provides, anti-stripped thread hollow bone screw among itself and second embodiment is basic identical, difference is: described groove shapes is " ten " font, described screw cap outer ring is the gear-like structure, and described screw cap outer ring is arranged at intervals with five teeth groove.
In sum, the anti-stripped thread hollow bone screw of this utility model and screwdriver kit are by offering groove at screw cap, and in the middle part of groove, offer the recess that extends in the shank of screw downwards, the linking arm structure that cooperates screwdriver kit, can easily take out bone screw, solve bone screw and when screwing out, skidded easily and be difficult for the problem of taking out.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to this utility model scope.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from this utility model design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with claims.
Claims (10)
1. anti-stripped thread hollow bone screw, it is characterized in that: comprise shank of screw (10a) and screw cap (20a), described screw cap (20a) offers groove (21a), run through offering recess (11a) in the middle part of the described groove (21a) downwards, described recess (11a) extends in the described shank of screw (10a).
2. anti-stripped thread hollow bone screw according to claim 1 is characterized in that: described recess (11a) extends to apart from the most advanced and sophisticated 2 ~ 4mm of described shank of screw (10a) place.
3. anti-stripped thread hollow bone screw according to claim 1 is characterized in that: described groove (21a) is regular hexagon, square, " ten " font or the quincunx structure of hexagonal.
4. anti-stripped thread hollow bone screw according to claim 1 is characterized in that: described recess (11a) is regular hexagon or square structure.
5. screwdriver kit that is used for the described anti-stripped thread hollow bone screw of claim 1 ~ 4, it is characterized in that: comprise handle (30a), connecting rod (40a) and cutter head (50a), described handle (30a) is arranged on described connecting rod (40a) end, described cutter head (50a) is arranged on described connecting rod (40a) other end, described cutter head (50a) comprises union joint (51a) and linking arm (52a), described linking arm (52a) is arranged on described union joint (51a) middle part, described union joint (51a) is the structure identical with groove (21a), and described linking arm (52a) is the structure that matches with recess (11a).
6. anti-stripped thread hollow bone screw, it is characterized in that: comprise shank of screw (10b) and screw cap (20b), described screw cap (20b) is gone up the inboard and is offered groove (21b), described screw cap (20b) outer ring is the gear-like structure, run through offering recess (11b) in the middle part of the described groove (21b) downwards, described recess (11b) extends in the described shank of screw (10b).
7. anti-stripped thread hollow bone screw according to claim 6 is characterized in that: described recess (11b) extends to apart from the most advanced and sophisticated 2 ~ 4mm of described shank of screw (10b) place.
8. anti-stripped thread hollow bone screw according to claim 6 is characterized in that: described groove (21b) is regular hexagon, square, " ten " font or " one " glyph construction.
9. screwdriver kit that is used for the described anti-stripped thread hollow bone screw of claim 6 ~ 8, it is characterized in that: comprise handle (30b), connecting rod (40b) and cutter head (50b), described handle (30b) is arranged on described connecting rod (40b) end, described cutter head (50b) is arranged on described connecting rod (40b) other end, described cutter head (50b) comprises outer union joint (53b) and interior union joint (51b), enclose between described outer union joint (53b) and the interior union joint (51b) and form grooving (54b), described grooving (54b) shape and the outer loop-shaped of screw cap (20b) match, and described interior union joint (51b) is the structure identical with groove (21b).
10. screwdriver kit according to claim 9, it is characterized in that: described cutter head (50b) also comprises linking arm (52b), described linking arm (52b) is arranged on described interior union joint (51b) middle part, and described linking arm (52b) is the structure that matches with recess (11b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320058172 CN203042419U (en) | 2013-02-01 | 2013-02-01 | Anti-slipping hollow bone screw and matched screw driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320058172 CN203042419U (en) | 2013-02-01 | 2013-02-01 | Anti-slipping hollow bone screw and matched screw driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203042419U true CN203042419U (en) | 2013-07-10 |
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ID=48725427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320058172 Expired - Fee Related CN203042419U (en) | 2013-02-01 | 2013-02-01 | Anti-slipping hollow bone screw and matched screw driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203042419U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110200692A (en) * | 2018-12-27 | 2019-09-06 | 丽水市人民医院 | A kind of orthopaedics broken nail device for fetching nail |
| CN110236662A (en) * | 2018-12-27 | 2019-09-17 | 丽水市人民医院 | A kind of reduction of the fracture device and its application method |
| WO2023079176A3 (en) * | 2021-11-08 | 2023-06-15 | Medos International Sarl | Bone screw inserters |
-
2013
- 2013-02-01 CN CN 201320058172 patent/CN203042419U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110200692A (en) * | 2018-12-27 | 2019-09-06 | 丽水市人民医院 | A kind of orthopaedics broken nail device for fetching nail |
| CN110236662A (en) * | 2018-12-27 | 2019-09-17 | 丽水市人民医院 | A kind of reduction of the fracture device and its application method |
| CN110200692B (en) * | 2018-12-27 | 2022-06-28 | 丽水市人民医院 | Broken nail taking device for orthopedics |
| CN110236662B (en) * | 2018-12-27 | 2022-07-15 | 丽水市人民医院 | Fracture restorer |
| WO2023079176A3 (en) * | 2021-11-08 | 2023-06-15 | Medos International Sarl | Bone screw inserters |
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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: 20130710 Termination date: 20180201 |