CN203328797U - Device for pulling out bone plate screws - Google Patents
Device for pulling out bone plate screws Download PDFInfo
- Publication number
- CN203328797U CN203328797U CN2013203178473U CN201320317847U CN203328797U CN 203328797 U CN203328797 U CN 203328797U CN 2013203178473 U CN2013203178473 U CN 2013203178473U CN 201320317847 U CN201320317847 U CN 201320317847U CN 203328797 U CN203328797 U CN 203328797U
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- China
- Prior art keywords
- blade plate
- locating piece
- plate screw
- locating
- hole
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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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Abstract
The utility model discloses a device for pulling out bone plate screws. The device for pulling out the bone plate screws comprises a locating block (1), a locating handle (2) and a nail puller (3). A groove (11) is formed in the bottom of the locating block (1). A locating hole (12) and two drill holes (13 and 14) are formed in the locating block (1). The distance between the center of the locating hole (12) and the midpoint of the connecting line of the centers of the two drill holes (13 and 14) is matched with the distance between the centers of two holes in the bone plate (4). The lower end of the locating handle (2) is matched with the locating hole (12). The head of a rotary rod (31) of the nail puller (3) is provided with two symmetrical claws (32 and 33). The relative positions of the two claws (32 and 33) correspond to the relative positions of the two drill holes (13 and 14). On the condition of no bone destruction, the device for pulling out the bone plate screws can be used for helping a doctor to rapidly pull out the bone plate screws which are hard to pull out through a conventional method and a conventional tool. The device for pulling out the bone plate screws is low in manufacturing cost.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, particularly a kind of blade plate screw withdrawing device.
Background technology
Blade plate and blade plate screw (the blade plate screw is that blade plate is fixed on to the screw on bone) are fixedly the most frequently used modes of shaft fracture for the treatment of at present, in clinical middle extensive application.But while being expert at removal surgery, often run into some screws and be difficult to the problem of taking out, especially pressurized bone plate or retain the blade plate screw of overlong time in body, in turning process, driver bit usually skids off from the blade plate screw grooves, and the wearing and tearing groove, makes the blade plate screw grooves lose efficacy, can't rotate the blade plate screw, make the patient feel simply helpless in this type of operation, even can cause operative failure, cause the generation of refracture.At this moment, the bone surgery doctor tends to seek help from medical engineering persons, take the mode of boring, cutting a hole or again on screw, sawing out groove, try every possible means screw is taken out, although sometimes also can solve subproblem, the easy osseous tissue to patient causes larger infringement, has increased the risk of operation.And, while using the normal screws cutter to get the blade plate screw, owing to existing, the screwdriver arm of force is short, little (because the small and weak the place ahead of revolving only of spinning force, tetres participates in), fatiguability and rotating shaft shakiness during operation, cause screwdriver can not with the screw cap of blade plate screw on groove closely chimeric, if with the screw cap of vice clamping blade plate screw often again as easy as rolling off a log screw cap wearing and tearing and the blade plate screw of blade plate screw of causing fracture.In addition, at present clinical also trepan commonly used, the bone drill method such as get into the cave is got nail, effort, time-consuming not only, and easily backbone structure intensity being caused damage, and cause operating time long, hemorrhage many and refracture occurs.
Summary of the invention
The purpose of this utility model is to overcome the above-mentioned deficiency of prior art and a kind of blade plate screw withdrawing device is provided, and it can be in the situation that do not destroy sclerotin and well help the doctor to take out by conventional means and instrument (being mainly screwdriver and pliers) to be difficult to the blade plate screw taken out; Get the blade plate screw speed by it fast, can reduce patient hemorrhage, save operating time; Its cost of manufacture is low, can use Reusability.
The technical solution of the utility model is: a kind of blade plate screw withdrawing device, and it comprises locating piece, position fixing handle and nail-fetching device; The bottom of locating piece is provided with the groove adapted with blade plate; Locating piece is provided with a locating hole and two borings, locating hole and two borings are through to the bottom groove of locating piece above locating piece, and the distance of the mid point of the line at the center of the center of locating hole and two borings is complementary with the distance at two Ge Kong centers on blade plate; The position fixing handle lower end is latch, and the locating hole of latch shape of cross section and locating piece and the cross section of the screw hole on blade plate adapt; Nail-fetching device comprises swing arm, and the swing arm head is provided with symmetrical two and stings tooth, and two to sting the relative position of tooth corresponding with the relative position of two borings on locating piece.
The further technical scheme of this utility model is: the hole cross sectional shape of the locating hole of described locating piece adapts with size and hole cross sectional shape and size on blade plate.
This utility model further technical scheme is: the distance of the mid point of the line at the center of the center of the locating hole of described locating piece and two borings is complementary with the distance at adjacent two Ge Kong centers on blade plate.
This utility model further technical scheme is: the cross section, hole of described locating hole is oval shape.
This utility model also further technical scheme is: described position fixing handle upper end is provided with the handle of being convenient to handgrip.
The further technical scheme of this utility model is: the swing arm head of described nail-fetching device is connected with a boosting-rod.
This utility model compared with prior art has following features:
1. accurate positioning, rapidly and efficiently.Can complete accurately two borings on locating piece location to target blade plate screw by the locating hole on locating piece and bottom groove, make and easily open two breach on target blade plate screw, nail-fetching device can take off the blade plate screw with two breach that are complementary with it easily, this utility model makes the corresponding blade plate screw of taking-up that the doctor can be rapidly and efficiently, also can avoid the generation of fortuitous event, can well help the doctor to take out the blade plate screw that is difficult to taking-up by conventional means in the situation that do not destroy sclerotin.
2. reasonable in design, with low cost.This utility model is reasonable in design, and its three ingredients can be good at cooperatively interacting, and gets the nail process very smooth and easy.And whole apparatus cost is cheap, cost of manufacture is greatly about 400 yuan of left and right, and can prolonged and repeatedly use after sterilization, and use cost is very cheap.
3. simple and efficient to handle, be easy to promote.The whole operation of this utility model is advantages of simple very, and general specialist or medical professionals personnel only need just can grasp relevant service routine and skill about 3 minutes, and skilled taking-up target nail that can be very fast, therefore in each hospital, good application value is arranged.
Below in conjunction with the drawings and specific embodiments, detailed construction of the present utility model is further described.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
The left view that Fig. 2 is Fig. 1;
The right view that Fig. 3 is Fig. 1;
The upward view that Fig. 4 is Fig. 1;
The top view that Fig. 5 is Fig. 1;
The A-A cutaway view that Fig. 6 is Fig. 3;
The perspective view that Fig. 7 is a kind of visual angle of this utility model;
The perspective view that Fig. 8 is the another kind of visual angle of this utility model;
The structural representation that Fig. 9 is locating piece of the present utility model;
The upward view that Figure 10 is Fig. 9;
The left view that Figure 11 is Fig. 9;
The perspective view at a kind of visual angle that Figure 12 is locating piece of the present utility model;
The perspective view at the another kind of visual angle that Figure 13 is locating piece of the present utility model;
The structural representation of Figure 14 nail-fetching device of the present utility model;
The left view that Figure 15 is Figure 14;
The upward view that Figure 16 is Figure 14;
The top view that Figure 17 is Figure 14;
The perspective view at a kind of visual angle that Figure 18 is nail-fetching device of the present utility model;
The perspective view at the another kind of visual angle that Figure 19 is nail-fetching device of the present utility model;
The structural representation that Figure 20 is position fixing handle of the present utility model;
The upward view that Figure 21 is Figure 20;
The perspective view that Figure 22 is position fixing handle of the present utility model;
Figure 23 is that Figure 22 is along the partial enlarged drawing in B line scope;
Figure 24 for getting out the structural representation of two blade plate screws after breach behind this utility model location;
The top view that Figure 25 is Figure 24;
The upward view that Figure 26 is Figure 24;
Figure 27 for getting out the perspective view at a kind of visual angle of two blade plate screws after breach behind this utility model location;
Figure 28 for getting out the perspective view at the another kind of visual angle of two blade plate screws after breach behind this utility model location;
Figure 29 is that Fig. 6 is along the partial enlarged drawing in C line scope.
The specific embodiment
Embodiment 1
As shown in Fig. 1-8: a kind of blade plate screw withdrawing device, it comprises locating piece 1, position fixing handle 2 and nail-fetching device 3, as shown in Fig. 9-13, the piece of stainless steel that locating piece 1 is 24mm*15mm*8mm, it is 3.5mm that the bottom of locating piece 1 is provided with the dark arc groove 11(bosom for 3.5mm adapted with blade plate 4, dual-side is 3mm), block blade plate 4 with groove 11 during location, make accurately location and stable of locating piece 1, in order to can on the screw cap of target blade plate screw 5, get out breach (51,52), locating piece 1 is provided with a locating hole 12 and two borings (13, 14), locating hole 12 and two borings (13, 14) above locating piece 1, be through to the bottom groove 11 of locating piece 1, hole cross sectional shape and size adapt (basically identical) on the hole cross sectional shape of locating hole 12 and size and blade plate 4, locating hole 12 center and two borings (13, the distance of the mid point of the line at center 14) (can be also non-conterminous two holes with adjacent two holes on blade plate 4, can several holes, interval in the middle of that is to say, increased the motility of getting nail, this belongs to equivalent technologies and replaces, belong to design of the present utility model) the distance at center be complementary (unanimously, also substantially equal), the cross section, hole that can find out locating hole 12 from Fig. 9-10 is oval shape, be convenient to position fixing handle 2 and insert rear positioning stablity, diameter is 4mm, two borings (13, 14) diameter is 3.4mm, first 13 centre distance locating hole 12 center 8.6mm that hole, second boring 14 centre distance locating hole 12 center 15.4mm, when locating piece 1 is accurately positioned on blade plate 4, the drill bit (the length of the bit is 12mm) of 3mm that can be by stainless steel is respectively through two borings (13, 14) target blade plate screw 5(is needed to the blade plate screw 5 taken out, namely be difficult to the blade plate screw 5 taken out by conventional method) screw cap on get out breach (51, 52) (as shown in Figure 24-28).
As shown in Figure 20-23, the latch 21 that position fixing handle 2 lower ends are long 16mm, the locating hole 12(of its shape of cross section (as shown in Fig. 1-2 3) and locating piece 1 is as shown in Fig. 9-10) and blade plate 4 on screw hole 41(as shown in Fig. 4-6) cross section adapt, in order to can locating piece 1 be fastened on blade plate 4 by it, be that it in use can be through in the screw hole 41 on the rear insertion blade plate 4 of locating hole 12 of locating piece 1, make locating piece 1 and blade plate 4 relative positions fix, thereby make two borings (13, 14) the nut dual-side of stable alignment target blade plate screw 5, be convenient to get out breach at the nut dual-side of target blade plate screw 5, position fixing handle 2 upper ends are provided with the handle 22 of being convenient to handgrip.
As shown in Figure 14-19, nail-fetching device 3 comprises swing arm 31, long 60mm, swing arm 31 heads are provided with symmetrical two and sting tooth (32, 33), sting tooth (32 for two, 33) two borings (13 on relative position and locating piece 1, 14) relative position adapt (also corresponding), like this can be with guaranteeing to sting tooth (32 for two in use, 33) just in time can be stuck in by two on locating piece 1 borings (13, 14) location and get out two breach (51 on the screw cap of blade plate screw 5, 52) adapt, sting tooth (32 by two, 33) be stuck in two breach (51 that get out on the screw cap of blade plate screw 5, 52) in, oppositely (direction of back-outing) firmly rotates nail-fetching device back-out blade plate screw 5, swing arm 31 heads are connected with a boosting-rod 34, and facilitate the doctor to operate, alleviate the labour.
During clinical use, a blade plate screw 5 on blade plate screw 5 sides of at first difficulty being taken out takes out, just left a hole on blade plate 4, then localizer 1 is fixed on blade plate 4 by its groove 11, again the locating hole 12 on locating piece 1 is alignd with the hole of staying on blade plate 4, finally the latch 21 of position fixing handle 2 is run through to the aperture on locating hole 12 and blade plate 4, add the help of the groove 11 of localizer 1, can make locating piece 1 locate accurately on blade plate 4, two other boring (13 on localizer 1 simultaneously, 14) both sides of target screw have also been aimed at accurately, by two on localizer 1 borings (13, 14), successively from two, hole (13 with the drill bit of 3.4mm, 14) in, pass, lateral symmetry at the screw cap of blade plate screw 5 gets out two breach (51, 52), take out position fixing handle 2, exit localizer 1, by stinging in two breach (51,52) on the screw cap that tooth (32,33) correspondence is stuck in blade plate screw 5 (as shown in figure 29) of two projections of nail-fetching device 3 front ends, the boosting-rod 34 of both hands rotation nail-fetching device 3, oppositely (produce the direction of blade plate screw 5) and rotate, slowly blade plate screw 5 is taken out, as run into, there are a plurality of blade plate screws 5 to be difficult to take out simultaneously, as long as there is a blade plate screw 5 to take out by conventional method, just can using the blade plate screw 5 of this taking-up as starting point (locating hole of the latch 21 of position fixing handle 2 lower ends when using utility model for the first time), repeat above operation by this utility model and take out successively other any one blade plate screw 5, certainly, if continuous a plurality of blade plate screw 5 is difficult to take out, the distance at the mid point of the line at the center of two borings (13,14) that also can Design Orientation device 1 and locating hole 12 center is plurality of specifications, as long as have a blade plate screw 5 to take out by conventional method so that have on blade plate 4, just can take out by this utility model of choosing different size other any one blade plate screw 5.
clinical trial
?the applicant uses this utility model to complete 20 examples and gets 5 tests of blade plate screw (in the situation that General Anesthesia Undergoing is liquor-saturated, the test that has adopted this utility model to carry out while having occurred being difficult to take out blade plate screw 5 by conventional tool and method), man's 15 examples, female's 5 examples, patient age 14-56 year, upper limb compression steel plate (blade plate 4) 12 examples wherein, lower limb compression steel plate (blade plate 4) 8 examples, be and use conventional means and apparatus (screwdriver and pliers) to be difficult to the situation that blade plate screw 5 is taken out, the groove of the screw cap of 40 blade plate screws 5 is twisted cunning altogether, be difficult to take out, after using this utility model, all can take out smoothly, and getting the nail time all is less than 5 minutes, in art, without blade plate screw 5, fracture and the phenomenon such as refracture occurs, abnormal without inflammatory exudation and infection of incisional wound etc.
This utility model is not limited to above-mentioned concrete structure and size, so long as have within blade plate screw withdrawing device with the basic identical structure of localizer 1 of the present utility model (comprise various equivalent technologies replace) just drops on protection domain of the present utility model.
Claims (10)
1. a blade plate screw withdrawing device, it is characterized in that: it comprises locating piece (1), position fixing handle (2) and nail-fetching device (3); The bottom of locating piece (1) is provided with the groove (11) adapted with blade plate (4); Locating piece (1) is provided with a locating hole (12) and two borings (13,14), locating hole (12) and two borings (13,14) are through to the bottom groove (11) of locating piece (1) above locating piece (1), and the distance at the distance upper two Ge Kong centers of same blade plate (4) of the mid point of the line at the center of the center of locating hole (12) and two borings (13,14) is complementary; Position fixing handle (2) lower end is latch (21), and the locating hole (12) of latch (21) shape of cross section and locating piece (1) and the cross section of the screw hole (41) on blade plate (4) adapt; Nail-fetching device (3) comprises swing arm (31), swing arm (31) head is provided with symmetrical two and stings tooth (32,33), and two to sting the relative position of tooth (32,33) corresponding with the relative position of two borings (13,14) on locating piece (1).
2. blade plate screw withdrawing device according to claim 1 is characterized in that: the hole cross sectional shape of the locating hole (12) of described locating piece (1) adapts with size and hole cross sectional shape and size on blade plate (4).
3. blade plate screw withdrawing device according to claim 1 and 2 is characterized in that: the distance at the distance upper adjacent two Ge Kong centers of same blade plate (4) of the mid point of the line at the center of the center of described locating hole (12) and two borings (13,14) is complementary.
4. blade plate screw withdrawing device according to claim 1 and 2, it is characterized in that: described position fixing handle (2) upper end is provided with the handle (22) of being convenient to handgrip.
5. blade plate screw withdrawing device according to claim 3, it is characterized in that: described position fixing handle (2) upper end is provided with the handle (22) of being convenient to handgrip.
6. blade plate screw withdrawing device according to claim 1 and 2, it is characterized in that: swing arm (31) head of described nail-fetching device (3) is connected with a boosting-rod (34).
7. blade plate screw withdrawing device according to claim 3, it is characterized in that: swing arm (31) head of described nail-fetching device (3) is connected with a boosting-rod (34).
8. blade plate screw withdrawing device according to claim 4, it is characterized in that: swing arm (31) head of described nail-fetching device (3) is connected with a boosting-rod (34).
9. blade plate screw withdrawing device according to claim 5, it is characterized in that: swing arm (31) head of described nail-fetching device (3) is connected with a boosting-rod (34).
10. blade plate screw withdrawing device according to claim 1 and 2, it is characterized in that: the cross section, hole of the locating hole (12) of described locating piece (1) is oval shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203178473U CN203328797U (en) | 2013-06-04 | 2013-06-04 | Device for pulling out bone plate screws |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203178473U CN203328797U (en) | 2013-06-04 | 2013-06-04 | Device for pulling out bone plate screws |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203328797U true CN203328797U (en) | 2013-12-11 |
Family
ID=49697505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203178473U Expired - Fee Related CN203328797U (en) | 2013-06-04 | 2013-06-04 | Device for pulling out bone plate screws |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203328797U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108338827A (en) * | 2018-03-15 | 2018-07-31 | 无锡圣诺亚科技有限公司 | Easily take out screw device |
-
2013
- 2013-06-04 CN CN2013203178473U patent/CN203328797U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108338827A (en) * | 2018-03-15 | 2018-07-31 | 无锡圣诺亚科技有限公司 | Easily take out screw device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131211 Termination date: 20140604 |