CN211094636U - Screwdriver matched with tool for absorbable polylactic acid bone nail - Google Patents

Abstract

The utility model relates to a can absorb polylactic acid bone nail accessory tool bottle opener belongs to the technical field of medical instrument, and it includes the body of rod, the fixed slot has been seted up to the tip of the body of rod, and the fixed slot includes spacing face and stationary plane, the axis of the body of rod of spacing face perpendicular to, and the stationary plane begins from two relative edges of spacing face, extends to the tip of the body of rod, and the stationary plane sets up two, spacing face and stationary plane respectively with the terminal surface and two side looks adaptations of head, the utility model discloses have the difficult effect that produces the damage of polylactic acid bone nail.

Description

Screwdriver matched with tool for absorbable polylactic acid bone nail

Technical Field

The utility model belongs to the technical field of the technique of medical instrument and specifically relates to a can absorb polylactic acid bone nail supporting tool bottle opener is related to.

Background

At present, polylactic acid bone nails are made of materials which are non-toxic, harmless and absorbable in human bodies, have mechanical strength similar to human bones, do not form stress shielding effect, do not need secondary operation after operation, and reduce the pain of patients.

As shown in fig. 1, the existing polylactic acid bone nail comprises a nail body, wherein a head is fixedly connected to one end of the nail body, the end surface of the head, far away from the nail body, is perpendicular to the axis of the nail body, two opposite side surfaces of the head are parallel to each other, and the end surface of the head, far away from the nail body, is perpendicular to the head.

The above prior art solutions have the following drawbacks: when the cross groove type screw of the common screw is adopted to rotationally fix the polylactic acid bone nail, the head of the polylactic acid bone nail is easy to damage due to the fact that the mechanical strength of the polylactic acid bone nail is far from that of the traditional metal screw.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a polylactic acid bone nail accessory tool bottle opener of absorbable of difficult production damage of polylactic acid bone nail.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a can absorb polylactic acid bone nail kit bottle opener, includes the body of rod, the fixed slot has been seted up to the tip of the body of rod, and the fixed slot includes spacing face and stationary plane, the axis of the spacing face perpendicular to body of rod, and the stationary plane begins from two relative edges of spacing face to the tip of the body of rod, and the stationary plane sets up two, spacing face and stationary plane respectively with the terminal surface and two side looks adaptations of head.

Through adopting above-mentioned technical scheme, the tip with the body of rod is just to the direction removal of polylactic acid bone nail head, the head blocks gradually in the fixed slot, and simultaneously, the side and the stationary plane butt of head, terminal surface and the stationary plane butt up to the head, then rotate the body of rod, the stationary plane drives the head and rotates together, wholly rotate polylactic acid bone nail from the head outside, and for the rotatory fixed mode of cross cell type screw, the setting of fixed slot, the area of contact of the body of rod with the head has been increased, the power that receives in the unit area of messenger's head reduces, thereby the difficult production of head of polylactic acid bone nail damages.

The utility model discloses further set up to: the limiting surface is fixedly connected with a fixing column, and a groove matched with the fixing column is formed in the end face, far away from the nail body, of the head.

Through adopting above-mentioned technical scheme, the in-process in the fixed slot is blocked into gradually with the head of polylactic acid bone nail, simultaneously with the fixed column insert the recess, the recess plays limiting displacement to the fixed column, makes can not produce relative movement between fixed column and the head to the head of polylactic acid bone nail and the body of rod between skid have been avoided appearing.

The utility model discloses further set up to: along the direction of keeping away from spacing face, the diameter of fixed column reduces gradually.

Through adopting above-mentioned technical scheme, make the fixed column be the shape of cone, the shape of the recess that corresponds also is the shape of cone, and the tip area that spacing face was kept away from to the fixed column is less, and the opening of recess is great, makes the fixed column transaction get into in the recess, then by the slope inner wall guide of recess and in the accurate recess that gets into, so the shape setting of fixed column makes the reference column change insert in the recess.

The utility model discloses further set up to: the axis of the fixing column coincides with the axis of the rod body, and the axis of the groove coincides with the axis of the nail body.

Through adopting above-mentioned technical scheme, when the fixed column inserted in the recess, the axis of the body of rod and the axis coincidence of head have further avoided the head to produce the damage.

The utility model discloses further set up to: a chamfer surface is arranged between the fixed surface and the end surface of the rod body.

Through adopting above-mentioned technical scheme, the opening grow that sets up of chamfer face made the fixed slot, and when the body of rod moved to the direction of head, the head can easily fall into the chamfer face, then by the chamfer face guide, until two relative sides of head and stationary plane butt, the setting up of chamfer face makes the fixed slot card go into the outside of head comparatively convenient.

The utility model discloses further set up to: the included angle between the chamfer surface and the fixed surface is thirty to sixty degrees.

By adopting the technical scheme, when the angle between the chamfer surface and the fixing surface is smaller, the opening of the fixing groove is smaller, the fixing groove is not easy to align and completely align with the head, so that the head is not easy to clamp in, when the included angle between the chamfer surface and the fixing surface is larger, the inclination degree of the chamfer surface is smaller after the head is abutted against the chamfer surface, so that the guide effect of the chamfer surface is poorer, and the fixing groove can be clamped in the outer side of the head only by further aligning the fixing groove with the head; the included angle between the chamfer surface and the fixing surface is thirty to sixty degrees, so that the chamfer surface has a certain large inclination degree, and the opening of the fixing groove is large, so that the fixing groove is convenient to clamp into the outside of the head.

The utility model discloses further set up to: the rod body is far away from the end fixedly connected with handle of fixed slot.

Through adopting above-mentioned technical scheme, when rotating the body of rod, rotate the handle, the handle rotates and drives the body of rod and rotate, and the handle has increased the length that can exert the turning force to the body of rod, makes and to rotate polylactic acid bone nail in can following the distance far away to polylactic acid bone nail.

The utility model discloses further set up to: the handle is kept away from the tip fixedly connected with dwang of the body of rod, the axis of axis perpendicular to handle's of dwang axis, and the handle is connected in the middle part position of dwang.

Through adopting above-mentioned technical scheme, dwang and handle form T shape structure, rotate the dwang, make the dwang rotate around the axis of handle, and the dwang rotates and drives the handle rotation, and for direct rotation handle, the force application is changeed in the rotation that sets up messenger's handle of dwang, rotates the handle more laborsaving and convenient.

To sum up, the utility model discloses a beneficial technological effect does:

1. the fixing groove is arranged, so that the contact area between the rod body and the head is increased, the force applied to the head in unit area is reduced, and the head of the polylactic acid bone nail is not easy to damage;

2. the head part of the polylactic acid bone nail slips from the rod body by arranging the fixing column;

3. through setting up the dwang, make the rotation of handle change the application of force, rotate the handle more laborsaving and convenient.

Drawings

FIG. 1 is a schematic structural view of a polylactic acid bone nail;

fig. 2 is a schematic structural diagram of the present invention;

fig. 3 is a schematic view of the structure of the utility model in use.

In the figure, 1, a rod body; 11. fixing grooves; 111. a limiting surface; 112. a fixed surface; 2. fixing a column; 21. chamfering; 3. a handle; 31. rotating the rod; 4. a nail body; 41. a head portion; 42. and (4) a groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 2, for the screwdriver which is a kit for absorbable polylactic acid bone nails disclosed by the present invention, comprising a rod body 1, wherein the end of the rod body 1 is provided with a fixing groove 11, the fixing groove 11 comprises a limiting surface 111 and a fixing surface 112, the limiting surface 111 is perpendicular to the axis of the rod body 1, the fixing surface 112 extends from two opposite edges of the limiting surface 111 to the end of the rod body 1, two fixing surfaces 112 are provided, the polylactic acid bone nail comprises a nail body 4, one end of the nail body 4 is fixedly connected with a head 41, the head 41 is fixedly connected with one end of the nail body 4, the end surface of the head 41 far away from the nail body 4 is vertical to the axis of the nail body 4, two opposite side surfaces of the head 41 are parallel to each other and are vertical to the end surface of the head 41 far away from the nail body 4, when the head 41 is fitted into the fixing groove 11, the stopper surface 111 abuts against an end surface of the head 41, and the fixing surface 112 abuts against two side surfaces of the head 41 facing each other. With the outside of fixed slot 11 card to head 41, the body 1 of dwang 31, the body of rod 1 drives stationary plane 112 and rotates together, and stationary plane 112 drives two sides that head 41 is relative and rotates, has increased the area of contact of the body of rod 1 with head 41, makes the power that receives in the unit area of head 41 reduce to the difficult production of head 41 of polylactic acid bone nail damages.

Referring to fig. 2 and 3, the limiting surface 111 is fixedly connected with a fixing column 2, the diameter of the fixing column 2 is gradually reduced along the direction far away from the limiting surface 111, a groove 42 matched with the fixing column 2 is formed in the end surface of the head 41 far away from the nail body 4, namely, the diameter of the groove 42 is gradually reduced from the end surface of the head 41 to the direction close to the center of the head 41, the axis of the fixing column 2 is overlapped with the axis of the rod body 1, the axis of the groove 42 is overlapped with the axis of the nail body 4, so that the area of the end part of the fixing column 2 is smaller, the opening area of the groove 42 is larger, the end part of the fixing column 2 is easier to enter the groove 42, the overlapping of the fixing column 2 and the axis of the rod body 1 and the overlapping of the groove 42; a chamfer surface 21 is arranged between the fixing surface 112 and the end surface of the rod body 1, and the included angle between the chamfer surface 21 and the fixing surface 112 is thirty to sixty degrees.

Referring to fig. 2 and 3, the tip fixedly connected with handle 3 of fixed slot 11 is kept away from to the body of rod 1, the axis of handle 3 and the axis coincidence of the body of rod 1, the diameter of handle 3 is less than the diameter of the body of rod 1, and the arc is excessive between the circumference face of the body of rod 1 to the circumference face of handle 3, thereby when the junction of the body of rod 1 and handle 3 receives the power, power can be at the excessive position evenly distributed of arc, stress concentration has been avoided, make the connection between the body of rod 1 and the handle 3 strengthened, the tip fixedly connected with dwang 31 of the body of rod 1 is kept away from to handle 3, the axis of dwang 31 perpendicular to handle 3's axis, and handle 3 connects the middle part position in dwang 31. The rotating rod 31 and the handle 3 form a T-shaped structure, so that the rotating rod 31 can be conveniently applied with force when rotating.

The implementation principle of the embodiment is as follows: the fixing groove 11 is opposite to the head 41 of the polylactic acid bone nail, then the rod body 1 is moved towards the direction close to the head 41 until the fixing groove 11 contacts the outside of the head 41, the chamfer surface 21 contacts the edge position of the head 41, the rod body 1 is continuously moved, the rod body 1 is guided by the chamfer surface 21 and is gradually clamped on the outer wall of the fixing groove 11, meanwhile, the fixing column 2 is clamped in the groove 42, the groove 42 limits the fixing column 2, the fixing column 2 cannot move relative to the groove 42, the body 1 and the nail body 4 are prevented from slipping relatively, the rotating rod 31 body 1 is provided, the body 1 drives the fixing surface 112 to rotate together, the fixing surface 112 drives two opposite side surfaces of the head 41 to rotate, the fixing surface 112 increases the contact area between the head 41 and the body 1, the force received in the unit area of the head 41 is reduced, and therefore the head 41 of the polylactic acid bone nail is not easy to damage.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. The utility model provides a polylactic acid bone nail kit bottle opener can absorb, includes the body of rod (1), its characterized in that: fixed slot (11) have been seted up to the tip of the body of rod (1), and fixed slot (11) are including spacing face (111) and stationary plane (112), the axis of the body of rod (1) of spacing face (111) perpendicular to, and stationary plane (112) begin from two relative edges of spacing face (111), extend to the tip of the body of rod (1), and stationary plane (112) set up two, spacing face (111) and stationary plane (112) respectively with the terminal surface and two side looks adaptations of head (41).

2. The absorbable polylactic acid bone screw kit driver as claimed in claim 1, wherein: spacing face (111) fixedly connected with fixed column (2), head (41) keep away from the terminal surface of nail body (4) and offer recess (42) with fixed column (2) looks adaptation.

3. The absorbable polylactic acid bone screw kit driver as claimed in claim 2, wherein: the diameter of the fixing column (2) is gradually reduced along the direction far away from the limiting surface (111).

4. The absorbable polylactic acid bone screw kit driver as claimed in claim 2, wherein: the axis of the fixed column (2) coincides with the axis of the rod body (1), and the axis of the groove (42) coincides with the axis of the nail body (4).

5. The absorbable polylactic acid bone screw kit driver as claimed in claim 1, wherein: a chamfer surface (21) is arranged between the fixing surface (112) and the end surface of the rod body (1).

6. The absorbable polylactic acid bone screw kit driver as claimed in claim 5, wherein: the included angle between the chamfer surface (21) and the fixing surface (112) is thirty to sixty degrees.

7. The absorbable polylactic acid bone screw kit driver as claimed in claim 1, wherein: the end part of the rod body (1) far away from the fixing groove (11) is fixedly connected with a handle (3).

8. The absorbable polylactic acid bone screw kit driver as claimed in claim 7, wherein: the tip fixedly connected with dwang (31) of the body of rod (1) is kept away from in handle (3), the axis of dwang (31) perpendicular to the axis of handle (3), and handle (3) are connected in the middle part position of dwang (31).

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