CN204562347U - Locking bone plate - Google Patents

Abstract

The utility model proposes a kind of locking bone plate, comprise the hone lamella body with upper surface and lower surface, hone lamella body is provided with the through hole being communicated with described upper surface and lower surface, also comprise the insert be made up of absorbable material be embedded in described through hole, described insert is provided with the through described upper surface of hone lamella body and the screwed hole of lower surface.This utility model locking bone plate, utilize absorbable material as insert, be stitched together, after a period of time with hone lamella body, insert can be absorbed by the body, thus can take out the screw coordinated with insert easily, be easy to dismounting, and, because insert is absorbable material, it has certain toughness, can produce microstimulation to fracture line, promotes union of fracture.

Description

Locking bone plate

Technical field

This utility model relates to a kind of locking bone plate.

Background technology

Locking bone plate is widely used in bone surgery treatment.Locking bone plate generally comprises the hone lamella body of a long strip-board shape, and hone lamella body is provided with screwed hole, and screwed hole is used for and screw fit.In use, be screwed in screwed hole with screw, the front end of screw is combined with the bone of human body through after hone lamella body, thus locking bone plate and bone compact siro spinning technology is got up.Existing locking bone plate not easily makes screw exit from screwed hole when dismantling, and is thus difficult to dismounting.

Disclosed in described background technology part, above-mentioned information is only for strengthening the understanding to background of the present utility model, and therefore it can comprise the information do not formed prior art known to persons of ordinary skill in the art.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of locking bone plate being easy to dismantle.

Additional aspect of the present utility model and advantage will partly be set forth in the following description, and partly will become obvious from description, or can the acquistion by practice of the present utility model.

According to an aspect of the present utility model, a kind of locking bone plate, comprise the hone lamella body with upper surface and lower surface, hone lamella body is provided with the through hole being communicated with described upper surface and lower surface, also comprise the insert be made up of absorbable material be embedded in described through hole, described insert is provided with the through described upper surface of hone lamella body and the screwed hole of lower surface.

According to an embodiment of the present utility model, between described insert and described hone lamella body, be provided with the holding section be combineding with each other to prevent described insert from rotating.

According to an embodiment of the present utility model, the holding section on described hone lamella body is at least one groove be communicated with described through hole be arranged on a wherein surface of hone lamella body, and the holding section in described insert is be inserted into the fixture block in described groove.

According to an embodiment of the present utility model, described fixture block evagination is in the lateral wall of described insert.

According to an embodiment of the present utility model, described locking bone plate be provided with restriction insert threadingly hole axial direction slide positioner.

According to an embodiment of the present utility model, described positioner comprises the annular groove be arranged on described through-hole side wall and the land coordinated with described annular groove being arranged on described insert outer wall.

According to an embodiment of the present utility model, insert is provided with the through slot of the outer wall being extended to insert by described screwed hole.

According to an embodiment of the present utility model, described positioner is the ball-and-socket groove be arranged on through-hole side wall, and the outer wall of described insert is the ball-and-socket type suitable with described ball-and-socket groove.

According to an embodiment of the present utility model, described hone lamella body is titanium alloy sheet or Titanium board.

According to an embodiment of the present utility model, described insert is High molecular weight polyethylene insert or magnesium alloy insert.

As shown from the above technical solution, advantage of the present utility model and good effect are:

This utility model locking bone plate, utilize absorbable material as insert, be stitched together, after certain hour with hone lamella body, insert can be absorbed by the body, thus can take out the screw coordinated with insert easily, be easy to dismounting, and, because insert is absorbable material, it has certain toughness, can produce microstimulation to fracture line, promotes union of fracture.

Accompanying drawing explanation

Describe its example embodiment in detail by referring to accompanying drawing, above-mentioned and further feature of the present utility model and advantage will become more obvious.

Fig. 1 is the schematic diagram of the locking bone plate of this utility model one embodiment;

Fig. 2 is the cross-sectional schematic of A-A line in Fig. 1;

Fig. 3 is the partial schematic sectional view of B-B line in Fig. 1;

Fig. 4 is the structural representation of the insert of this utility model one embodiment;

Fig. 5 is the structural representation of the hone lamella body of this utility model one embodiment

The schematic diagram of the locking bone plate of another embodiment of Fig. 6 this utility model;

Fig. 7 is the cross-sectional schematic of C-C line in Fig. 6;

Fig. 8 is the partial schematic sectional view of D-D line in Fig. 6;

Fig. 9 is the insert schematic diagram of another embodiment of this utility model;

Figure 10 is that Fig. 9 is from schematic diagram during another angle views;

Figure 11 is the schematic diagram of another embodiment of this utility model.

In figure: 1, hone lamella body; 11, through hole; 12, groove; 13, annular groove; 2, insert; 21, screwed hole; 22, fixture block; 23, land; 24, through slot.

Detailed description of the invention

More fully example embodiment is described referring now to accompanying drawing.But example embodiment can be implemented in a variety of forms, and should not be understood to be limited to embodiment set forth herein; On the contrary, these embodiments are provided to make this utility model comprehensively with complete, and the design of example embodiment will be conveyed to those skilled in the art all sidedly.Reference numeral identical in figure represents same or similar structure, thus will omit their detailed description.

As shown in Figures 1 to 5, present embodiment discloses a kind of locking bone plate, for being fixed the skeleton of fracture in bone surgery.This locking bone plate comprises hone lamella body 1 and insert 2.Hone lamella body 1 has upper surface and lower surface, and hone lamella body 1 is provided with the through hole 11 being communicated with its upper surface and lower surface, and insert 2 is embedded within through hole 11.Insert 2 is made up of absorbable material, and insert 2 is provided with the screwed hole 21 of through hone lamella body 1.Through hole 11 is not limited to manhole, and also can be the irregularly-shaped hole of other form, locking screw thread bore portion be wherein set to the form of Absorbable rod insert; As shown in Figure 11, in another embodiment of this utility model, through hole 11 is elongated hole.

Screwed hole 21 can be combined with screw.When using this locking bone plate, screwing in screwed hole 21 with screw, then making the front end of screw screw in pending skeleton, by screw, human skeleton and this locking bone plate being fixed together.The quantity of insert 2 can be set to different quantity as required.

The holding section be combined with each other is provided with between insert 2 and hone lamella body 1.By arranging holding section, make when screw is screwed in skeleton, insert 2 can not rotate relative to hone lamella body 1, thus improves the reliability of this locking bone plate.

See Fig. 3 to Fig. 5, in the present embodiment, the holding section on hone lamella body 1 is at least one groove 12 be communicated with through hole 11 be arranged on one of them surface of hone lamella body 1, and the holding section in insert 2 is the fixture block 22 be inserted in groove 12.In the present embodiment, the quantity of groove 12 is two, and these two grooves 12 are arranged symmetrically in the both sides of through hole 11, and the quantity of fixture block 22 is similarly two, and each fixture block 22 engages with a groove 12 respectively.In other embodiments of this utility model, the quantity of groove 12 can be set to three or more, and the quantity of fixture block 22 can be equal with groove 12, also the quantity of groove 12 can be less than, such as, groove 12 can be set to three, and fixture block 22 is only set to one.

From Fig. 3 and Fig. 4, in the present embodiment, fixture block 22 evagination is in the lateral wall of insert 2.Can simplify the structure of insert 2 thus, the body shape of insert 2 is cylindrical.But, the form of fixture block 22 not as limit, such as, within the transverse cross-sectional area that also can be recessed in insert 2.

In the present embodiment, hone lamella body 1 can be titanium alloy sheet or Titanium board, but in other embodiments of the present utility model, hone lamella body 1 also can adopt other metal materials or even nonmetallic materials, such as, adopt corrosion resistant plate or carbon fiber board etc.As long as the structural strength of material therefor meets the requirements.Insert 2 can be High molecular weight polyethylene insert or magnesium alloy insert, and other degradation materials also can be adopted to make, as polylactic acid etc.

In use, insert 2 can little by little be absorbed by the body locking bone plate of the present utility model in degraded, making the gap between insert 2 and screw can become large gradually, can take out screw easily when dismantling.And due to insert 2 are absorbable materials, therefore insert 2 has certain toughness, and it can produce microstimulation to fracture line, promote union of fracture.

See Fig. 6 to Figure 10, Figure 6 shows that the schematic diagram of another embodiment of this utility model.In present embodiment, locking bone plate is provided with the positioner that restriction insert 2 is slided along screwed hole 21 axial direction.Utilize positioner, the construction features between hone lamella body 1 and insert 2 can be utilized to position insert 2.

The positioner of present embodiment comprises the annular groove 13 be arranged on through hole 11 sidewall and the land 23 coordinated with annular groove 13 being arranged on insert 2 outer wall.Land 23 is fastened among annular groove 13, can limit the motion of insert 2.Insert 2, under positioner and holding section combined effect, can be securely fixed on hone lamella body 1.

The mode that the land 23 of insert 2 is fitted into annular groove 13 is not limit, such as, through hole 11 can be set to counter sink, a baffle ring is screwed again in through hole 11, baffle ring and through hole 11 enclose annular groove 13, when loading insert 2, first unload lower baffle ring, after loading insert 2, baffle ring is reinstalled in through hole 11.As shown in Fig. 7, Fig. 9 and Figure 10, in order to accelerate the installation rate of insert 2, the annular groove 13 in the present embodiment is the domains directly processed in through hole 11, and in insert 2, be provided with a through slot 24.Through slot 24 extends to the outer wall of insert 2 by screwed hole 21.

By arranging through slot 24, then there is certain toughness due to insert 2, making insert 2 be compressed and be out of shape.Therefore, when installing insert 2, can first with the two ends of hands extruding through slot 24, the diameter of insert 2 is diminished, then insert 2 is filled in through hole 11, when land 23 enters into annular groove 13, insert 2 is automatically springed open by the state of compression, and land 23 is fastened among annular groove 13 completely.Therefore, by offering through slot 24 in insert 2, the structure of hone lamella body 1 can be simplified, and the installation process of insert 2 can be simplified.

In addition, positioner also can be the ball-and-socket groove be arranged on through hole 11 sidewall, and the outer wall of insert 2 is the ball-and-socket type suitable with this ball-and-socket groove.Insert 2 is combined in through hole 11 by complete hold, also can reach the object positioned insert 2.

Below illustrative embodiments of the present utility model is illustrate and described particularly.Should be appreciated that, this utility model is not limited to disclosed embodiment, and on the contrary, this utility model intention contains and is included in various amendment in the spirit and scope of claims and equivalent arrangements.

Claims (10)

1. a locking bone plate, comprise the hone lamella body with upper surface and lower surface, hone lamella body is provided with the through hole being communicated with described upper surface and lower surface, it is characterized in that, also comprise the insert be made up of absorbable material be embedded in described through hole, described insert is provided with the through described upper surface of hone lamella body and the screwed hole of lower surface.

2. locking bone plate according to claim 1, is characterized in that: be provided with the holding section be combineding with each other to prevent described insert from rotating between described insert and described hone lamella body.

3. locking bone plate according to claim 2, it is characterized in that: the holding section on described hone lamella body is at least one groove be communicated with described through hole be arranged on a wherein surface of hone lamella body, and the holding section in described insert is be inserted into the fixture block in described groove.

4. locking bone plate according to claim 3, is characterized in that: described fixture block evagination is in the lateral wall of described insert.

5. according to the arbitrary described locking bone plate of Claims 1-4, it is characterized in that: described locking bone plate is provided with the restriction insert threadingly positioner that slides of hole axial direction.

6. locking bone plate according to claim 5, is characterized in that: described positioner comprises the annular groove be arranged on described through-hole side wall and the land coordinated with described annular groove being arranged on described insert outer wall.

7. locking bone plate according to claim 6, is characterized in that: insert is provided with the through slot of the outer wall being extended to insert by described screwed hole.

8. locking bone plate according to claim 5, is characterized in that: described positioner is the ball-and-socket groove be arranged on through-hole side wall, and the outer wall of described insert is the ball-and-socket type suitable with described ball-and-socket groove.

9. locking bone plate according to claim 1, is characterized in that: described hone lamella body is titanium alloy sheet or Titanium board.

10. locking bone plate according to claim 1, is characterized in that: described insert is High molecular weight polyethylene insert or magnesium alloy insert.