CN206566009U - Synthetism component - Google Patents

Abstract

The utility model discloses a kind of synthetism component, including：Lag screw, the lag screw includes screw head and the first screw body extended from the screw head；The through hole through the fixture can be tilted by being provided with fixture, the fixture, and the aperture of the through hole is less than the cross-sectional diameter of the screw head, and more than or equal to the cross-sectional diameter of first screw body.The utility model proposes a kind of synthetism component, uniform pressurization can be realized, it is to avoid pressure is excessively concentrated, the foreign body sensation in implantation human body is small, and stability is high, reduces the disturbance degree to patient's weight-bearing activities；It can also be implanted into by Minimally Invasive Surgery, risk is small, it is convenient and swift and operation technique is simple.

Description

Synthetism component

Technical field

The utility model is related to technical field of medical instruments, more particularly, to a kind of synthetism component suitable for mesopodium.

Background technology

Foot can be injured because of a variety of external force, especially mesopodium, and wound, crush injury or the motion that such as traffic accident is caused are damaged Wound, causes fracture, deformity, can not bear a heavy burden, surgical intervention is needed mostly to recover function.

To avoid displaced or deformity, it will usually be implanted into bone plate or lag screw in fracture.Bone plate can be by Shape according to bone is accurately moulding, and through hole is provided with bone plate.It is implanted into after bone plate, plate fixation is existed using screw On bone, the tension force that screw is produced makes bone plate produce stress to bone face, and the frictional force between bone plate and bone face can be steady Determine fixation bone fracture plate, still, there is operation risk greatly, scar is obvious, it will be apparent that foreign body sensation, post-operative recovery time is long, and need The defects such as secondary taking-up.

Pressurization between sclerite can be completed by lag screw.Lag screw substantially can any angulation, so as to vertical It is fixed in fracture line；But, lag screw has hollow-core construction, is individually pressurizeed using lag screw it cannot be guaranteed that stable Property, it can influence bear a heavy burden in fixed effect, and postoperative long period.

Accordingly, it would be desirable to a kind of synthetism component, to solve the above problems.

Utility model content

In view of this, the purpose of this utility model is to propose a kind of synthetism component, can realize uniform pressurization, it is to avoid pressure Power is excessively concentrated, and the foreign body sensation in implantation human body is small, and stability is high, reduces the disturbance degree to patient's weight-bearing activities；It can also lead to Minimally Invasive Surgery implantation is crossed, risk is small, it is convenient and swift and operation technique is simple.

A kind of synthetism component provided based on above-mentioned purpose the utility model, including：

Lag screw, the lag screw includes screw head and the first screw sheet extended from the screw head Body；

The through hole through the fixture can be tilted by being provided with fixture, the fixture, the aperture of the through hole Less than the cross-sectional diameter of the screw head, and more than or equal to the cross-sectional diameter of first screw body.

Preferably, the fixture includes the second screw body and the company extended from the head of second screw body Socket part, the through hole is arranged on the connecting portion, and the through hole runs through the connecting portion, the bearing of trend of the through hole and institute The bearing of trend for stating the second screw body intersects.

Preferably, the longitudinal section of the connecting portion includes horizontal sides, the first arc in, the second arc and first side, described The top and bottom of first side respectively with first arc while top and top during second arc be connected, described first Arc while bottom and bottom during second arc be connected to the two ends of the horizontal sides, the first arc side and described Protruded to the same side on two arc sides.

Preferably, the through hole from first arc while to second arc successively include straight hole section, tapered hole section and Gradually wealthy hole section, minimum-value aperture of the aperture more than the tapered hole section of the straight hole section, and be less than the maximum of the gradually wealthy hole section Aperture.

Preferably, the lag screw also includes：Access Division, the two ends of the Access Division respectively with the screw head and First screw body is fixed with one heart.

Preferably, the cross-sectional diameter of the Access Division is more than the cross-sectional diameter of first screw body and less than institute The cross-sectional diameter of screw head is stated, the cross-sectional diameter of the Access Division is equal to the described of the tapered hole section of the through hole Minimum-value aperture.

Preferably, the Access Division is in gradually-reducing shape from the screw head to first screw body, the through hole The aperture of the straight hole section is less than the maximum cross section diameter of the Access Division, and minimum transversal more than the Access Division Face diameter.

Preferably, the lag screw is internally provided with the first hollow structure, and first hollow structure is along described The bearing of trend of lag screw runs through the lag screw.

Preferably, second screw body of the fixture is internally provided with the second hollow structure, described second Bearing of trend of the hollow structure along second screw body runs through second screw body.

Furthermore it is preferred that the first afterbody of first screw body is in six side's shapes, the second of second screw body Afterbody is in six side's shapes.

From the above it can be seen that the synthetism component that the utility model is provided, compared with prior art, with following excellent Point：First, being fixed on by fixture on the bone of health, lag screw, which is connected on fixture and is fixed on, needs what is pressurizeed In bone piece, to realize uniform pressurization between bone piece, it is to avoid pressure is excessively concentrated, and ensure the physiological angle of bone piece, make sclerite Between can combine closely, confrontation sclerite between slight shift, preferably realize that the fixation of mesopodium and the healing of fracture are repaiied It is multiple；Second, the foreign body sensation of synthetism component is small, stability is high, reduces the disturbance degree to patient's weight-bearing activities；Can also be by minimally invasive Operation implantation, risk is small, convenient and swift and operation technique is simple.Third, lag screw passes through Access Division and fixture energy Enough fixed angle connections rotate connection within the specific limits, to be adapted to different use scopes.Moreover, connecting portion takes sky Between it is small, foreign body sensation can be reduced.

Brief description of the drawings

By the way that embodiment is described below in conjunction with the accompanying drawings, features described above of the present utility model and technological merit will Become more fully apparent and be readily appreciated that.

Fig. 1 is the schematic diagram of the synthetism component used in first embodiment of the present utility model.

Fig. 2 is the longitudinal profile schematic diagram of the fixture of the synthetism component shown in Fig. 1.

Fig. 3 is the longitudinal profile schematic diagram of the lag screw of the synthetism component shown in Fig. 1.

Fig. 4 is the longitudinal profile schematic diagram of the synthetism component shown in Fig. 1.

Fig. 5 is the use state schematic diagram of the synthetism component shown in Fig. 1.

Fig. 6 illustrates for the longitudinal profile of the lag screw of the synthetism component used in second embodiment of the present utility model Figure.

Fig. 7 is the longitudinal profile schematic diagram for the synthetism component for including the lag screw shown in Fig. 6.

Wherein reference：

1：Lag screw； 11：Screw head； 12：First screw body；

13：Access Division； 14：First hollow structure； 15：First afterbody；

2：Fixture； 21：Second screw body； 22：Connecting portion；

23：Straight hole section； 24：Tapered hole section； 25：Gradually wealthy hole section；

26：Second hollow structure； 27：Second afterbody.

Embodiment

For the purpose of this utility model, technical scheme and advantage is more clearly understood, below in conjunction with specific embodiment, and Referring to the drawings, the utility model is further described.Wherein identical parts are presented with like reference characters.Need Illustrate, word "front", "rear", "left", "right", the "up" and "down" used in describing below refers to the side in accompanying drawing To.The word " interior " used and " outer " are referred respectively to towards or away from the direction of particular elements geometric center.

Fig. 1 is the schematic diagram of the synthetism component used in first embodiment of the present utility model.Fig. 2 is connecing shown in Fig. 1 The longitudinal profile schematic diagram of the fixture of bone component.Fig. 3 is the longitudinal profile signal of the lag screw of the synthetism component shown in Fig. 1 Figure.Fig. 4 is the longitudinal profile schematic diagram of the synthetism component shown in Fig. 1.Fig. 5 is that the use state of the synthetism component shown in Fig. 1 is shown It is intended to.As shown in Figures 1 to 5, synthetism component includes：Lag screw 1 and fixture 2.

Lag screw 1 includes the screw body 12 of screw head 11 and first, and the first screw sheet is extended from screw head 11 Body 12.

Through hole (such as straight hole section 23, the tapered hole section 24 and gradually wealthy through fixture 2 can be tilted by being provided with fixture 2 Hole section 25), the aperture of through hole is less than the cross-sectional diameter of screw head 11, and transversal more than or equal to the first screw body 12 Face diameter.

Fixture 2 is used for the bone for being fixed on health, and the first screw body 12 of lag screw 1 is fixed on through through hole In the bone piece for needing pressurization, screw head 11 is engaging in the top of through hole, and lag screw 1 can pressurize to bone piece, and ensure bone Physiological angle between block.The foreign body sensation of synthetism component is small, and stability is high, reduces the disturbance degree to patient's weight-bearing activities；Can also Enough it is implanted into by Minimally Invasive Surgery, risk is small, it is convenient and swift and operation technique is simple.

Preferably, fixture 2 includes the second screw body 21 and connecting portion 22, extends from the head of the second screw body 21 Go out connecting portion 22, through hole is arranged on connecting portion 22, through hole runs through connecting portion 22, the bearing of trend of through hole and the second screw body 21 bearing of trend intersects.The compact of second screw body 21, convenient to be fixed in bone, wound face is small, foreign body sensation It is small；Connecting portion 22 is used to provide positioning action and connection function, and through hole is tilted on connecting portion 22 to be run through so that the He of fixture 2 Angle is formed between lag screw 1, so that both can be fixed in the bone piece of diverse location, the second screw body 21 can increase Plus the stability of lag screw 1.

In the present embodiment, the afterbody of the first screw body 12 is tapered, and the afterbody of the second screw body 21 is tapered, cone The afterbody of shape provides higher penetration power, so that the first screw body 12 and the second screw body 21 can be rapidly secured to bone piece On.

Preferably, the longitudinal section of connecting portion 22 includes horizontal sides (not identifying), the first arc in (not identifying), the second arc (not identifying) and first side (not identifying), the top and bottom of first side respectively with the first arc while top and during the second arc Top connection, the first arc while bottom and bottom during the second arc be connected to the two ends of horizontal sides, the first arc side and the Protruded to the same side on two arc sides.Horizontal sides are used to be connected with the head of the second screw body 21, the first arc while and use during the second arc In setting through hole, first side is used for the height for adjusting connecting portion.Relative to existing screw head, the occupancy of connecting portion 22 is empty Between it is smaller, the screw head 11 of lag screw 1 can more be fitted with plane where first side so that the protuberance after combination Divide less, to reduce the foreign body sensation of synthetism component.

Preferably, through hole includes straight hole section 23, tapered hole section 24 and gradually wealthy hole section successively from the first arc while to the second arc 25, the aperture of straight hole section 23 is more than the minimum-value aperture of tapered hole section 24, and the aperture of straight hole section 23 is less than gradually that wealthy hole section 25 is most Large aperture.By setting different hole sections in through hole, to provide different apertures, so as to various sizes of lag screw 1 Match, increase the scope of application of fixture 1.

In the present embodiment, the aperture of straight hole section 23 is equal to the maximum diameter of hole of tapered hole section 24, and the aperture of straight hole section 23 Slightly larger than the minimum-value aperture of tapered hole section 24；Gradually the minimum-value aperture of wealthy hole section 25 is equal to the minimum-value aperture of tapered hole section 24, gradually wealthy The maximum diameter of hole of hole section 25 is approximately equal to 1.1~1.3 times of the aperture of straight hole section 23.

Preferably, lag screw also includes：Access Division 13, the two ends of Access Division 13 respectively with the spiral shell of screw head 11 and first Follow closely body 12 to fix with one heart, the cross-sectional diameter of Access Division 13 is more than the cross-sectional diameter of the first screw body 12.Screw head 11 are located at the outside of through hole, and the first screw body 12 runs through through hole, and Access Division 13 is located in through hole.By adjusting Access Division 13 Shape and size, can fix the fixed angle of lag screw 12 or change the fixed angle of lag screw, to increase synthetism The scope of application of component.

Preferably, Access Division 13 from the screw body of screw head 11 to the first 12 be in gradually-reducing shape, the straight hole section 23 of through hole Aperture is less than the maximum cross section diameter of Access Division 13, and the aperture of the straight hole section 23 of through hole is more than the minimum transversal of Access Division 13 Face diameter.When Access Division 13 is rotated in the straight hole section 23 of through hole, the first screw body 12 can be around tapered hole section 24 most Small-bore is rotated, and gradually wealthy hole section 25 is that the first screw body 12 provides rotation space, so as to the offer for lag screw 12 more Many setting angles.

In the present embodiment, the circular in cross-section of Access Division 13, the cross-sectional diameter of Access Division 13 is more than the first screw The cross-sectional diameter of the cross-sectional diameter of body 12, simultaneously greater than screw head 11, the minimum-value aperture of tapered hole section 24 is more than the The cross-sectional diameter of one screw body 12.When the first screw body 12 runs through through hole, Access Division 13 is located in straight hole section 23, spiral shell Nail head 11 is located at the outside of straight hole section 23, and when Access Division 13 is rotated in straight hole section 23, the first screw body 12 is tapered There is mobile space in hole section 24 and gradually wealthy hole section 25, so the first screw body 12 can be around the minimum-value aperture of tapered hole section 24 Rotate, the angular range of moving is at 0~26 °.

Preferably, lag screw 1 is internally provided with the first hollow structure 14, and the first hollow structure 14 is along lag screw 1 bearing of trend runs through lag screw 14, and the first hollow structure 14 is used for the effect for providing drainage and decompression, so as to pulling force Screw 1 coordinates with bone piece.In the present embodiment, cylindrical hollow structure, the first screw body 12 are provided with screw head 11 On be provided with cylindrical hollow structure, Access Division 13 and be provided with cylindrical hollow structure, three is communicated as one to form first Hollow structure 14, and set around the axis of lag screw 1.

Preferably, the second screw body 21 of fixture 2 is internally provided with the second hollow structure 26, the second hollow structure 26 run through the second screw body 21 along the bearing of trend of the second screw body 21, and the second hollow structure 21 is used to provide drainage work With the effect with decompression, so that the second screw body 21 and bone piece coordinate.In the present embodiment, the inside of the second screw body 21 The second hollow structure 26 around the axis of the second screw body 21 is provided with, the second hollow structure 26 is connected with through hole.

Furthermore it is preferred that the first afterbody 15 of the first screw body 12 is in six side's shapes, the second tail of the second screw body 21 Portion 27 be in six side's shapes, six side's shapes be cross section close to regular hexagon, six side's shapes, which can be realized, to be accurately positioned, be difficult skid, so as to Uniform pressurization, stable drive plus-pressure.

Fig. 6 illustrates for the longitudinal profile of the lag screw of the synthetism component used in second embodiment of the present utility model Figure.Fig. 7 is the longitudinal profile schematic diagram for the synthetism component for including the lag screw shown in Fig. 6.As shown in Figure 6 and Figure 7, synthetism group Part includes：Lag screw 1 and fixture 2.The synthetism component used in first embodiment shown in Fig. 1 to Fig. 5 and Fig. 6 to Fig. 7 The main distinction of the synthetism component used in shown second embodiment is：Access Division 13.

Preferably, the cross-sectional diameter of Access Division 13 is more than the cross-sectional diameter of the first screw body 12 and less than head of screw The cross-sectional diameter in portion 11, the cross-sectional diameter of Access Division 13 is equal to the minimum-value aperture of the tapered hole section 24 of through hole.Access Division 13 Enter in through hole, screw head 11 is located at outside through hole, the cross-sectional diameter of Access Division 13 and the minimum aperture of tapered hole section 24 Footpath is equal, and tapered hole section 24 limits the original place in through hole of Access Division 13 and rotated so that the peace that the only one of which of lag screw 12 is fixed Angle is filled, to provide higher stability.

The use process of synthetism component is described further below.

First, lag screw is selected according to fracture line line style, if fracture line lines are simply clear, can selects to have admittedly Determine the lag screw (as shown in Figure 6) of setting angle, if fracture line lines are relative complex, can select within the specific limits The lag screw (as shown in Figure 4) enough rotated.

Secondly, the through hole by lag screw on fixture, adjusts the setting angle of lag screw.

Finally, the second screw body of fixture is fixed on the bone of health, connecting portion is exposed in vitro, by pulling force First screw body of screw is fixed in the bone piece for needing to pressurize, and screw head exposes in vitro.

From the description above with practice understand, the utility model provide synthetism component, compared with prior art, with Lower advantage：First, being fixed on by fixture on the bone of health, lag screw, which is connected on fixture and is fixed on needs, to be added In the bone piece of pressure, to realize uniform pressurization between bone piece, it is to avoid pressure is excessively concentrated, and ensure the physiological angle of bone piece, make bone It can be combined closely between folded block, the slight shift between confrontation sclerite preferably realizes the fixation of mesopodium and being cured for fracture Close and repair；Second, the foreign body sensation of synthetism component is small, stability is high, reduces the disturbance degree to patient's weight-bearing activities；It can also pass through Minimally Invasive Surgery is implanted into, and risk is small, convenient and swift and operation technique is simple.Third, lag screw passes through Access Division and fixation Part can fixed angle connection or within the specific limits rotate connection, to be adapted to different use scopes.Moreover, connecting portion is accounted for It is small with space, foreign body sensation can be reduced.

Those of ordinary skills in the art should understand that：The foregoing is only specific embodiment of the utility model and , it is not limited to the utility model, all any modifications within purport of the present utility model, made, equivalent substitution, changes Enter, should be included within protection domain of the present utility model.

Claims (10)

1. a kind of synthetism component, it is characterised in that including：

Lag screw, the lag screw includes screw head and the first screw body extended from the screw head；

The through hole through the fixture can be tilted by being provided with fixture, the fixture, and the aperture of the through hole is less than The cross-sectional diameter of the screw head, and more than or equal to the cross-sectional diameter of first screw body.

2. synthetism component according to claim 1, it is characterised in that

The fixture includes the second screw body and the connecting portion extended from the head of second screw body, described logical Hole is arranged on the connecting portion, and the through hole runs through the connecting portion, the bearing of trend of the through hole and second screw The bearing of trend of body intersects.

3. synthetism component according to claim 2, it is characterised in that

The longitudinal section of the connecting portion includes horizontal sides, the first arc in, the second arc and first side, the top of the first side End and bottom respectively with first arc while top and top during second arc be connected, the bottom on the first arc side with The bottom on the second arc side is connected to the two ends of the horizontal sides, first arc while and during second arc to same Protrude side.

4. synthetism component according to claim 3, it is characterised in that

The through hole includes straight hole section, tapered hole section and gradually wealthy hole section, institute successively from first arc while to second arc The aperture for stating straight hole section is more than the minimum-value aperture of the tapered hole section, and less than the maximum diameter of hole of the gradually wealthy hole section.

5. synthetism component according to claim 4, it is characterised in that

The lag screw also includes：Access Division, the two ends of the Access Division respectively with the screw head and first spiral shell Nail body is fixed with one heart, and the cross-sectional diameter of the Access Division is more than the cross-sectional diameter of first screw body.

6. synthetism component according to claim 5, it is characterised in that

The cross-sectional diameter of the Access Division is more than the cross-sectional diameter of first screw body and less than the screw head Cross-sectional diameter, the cross-sectional diameter of the Access Division is equal to the minimum-value aperture of the tapered hole section of the through hole.

7. synthetism component according to claim 5, it is characterised in that

The Access Division is in gradually-reducing shape from the screw head to first screw body, the straight hole section of the through hole The aperture is less than the maximum cross section diameter of the Access Division, and more than the minimum cross sectional diameter of the Access Division.

8. the synthetism component according to any one of claim 1 to 7, it is characterised in that

The lag screw is internally provided with the first hollow structure, the first hollow structure prolonging along the lag screw Direction is stretched through the lag screw.

9. the synthetism component according to any one of claim 2 to 7, it is characterised in that

Second screw body of the fixture is internally provided with the second hollow structure, second hollow structure along The bearing of trend of second screw body runs through second screw body.

10. the synthetism component according to any one of claim 2 to 7, it is characterised in that

First afterbody of first screw body is in six side's shapes, and the second afterbody of second screw body is in six side's shapes.