CN210582675U

CN210582675U - Sternum fixing device

Info

Publication number: CN210582675U
Application number: CN201921016784.1U
Authority: CN
Inventors: 王平凡; 李晓召; 李峰; 何发明; 崔聪
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-05-22
Anticipated expiration: 2029-07-02

Abstract

The utility model discloses a breastbone fixing device, which comprises a fixing wire, a pair of breastbone fixing external members and a pair of breastbone fixing external members, wherein the fixing wire is a steel wire or a titanium alloy wire, the breastbone fixing external members are symmetrically arranged, the breastbone fixing external members comprise fixing rings for penetrating the fixing wire, the fixing rings are connected with gaskets, and the gaskets are curved surfaces matched with breastbones; the fixing ring and the shim are both made of steel or memory alloy, and the fixing wire penetrates through the fixing ring of each sternum fixing sleeve. The utility model discloses utilize the gasket to reduce the pressure that the breastbone received because of the ligature by a wide margin, prevent that the breastbone from receiving the too big fracture of pressure, avoid the fixed silk embedding breastbone, can not appear not hard up after guaranteeing the ligature, provide the condition for the normal healing of breastbone.

Description

Sternum fixing device

Technical Field

The utility model relates to a medical appliance.

Background

Most heart, pericardium and partial mediastinum surgeries at home and abroad are performed by adopting the median path of the chest, namely, the surgeries are performed after the sternum is split longitudinally. When the operation is finished, the left and right sternums are closed and fixed again by generally adopting a steel wire or titanium alloy wire bundling mode, and the sternum is bundled together by winding a steel wire at the fracture part of the sternum. This sternal fixation method has the following disadvantages:

if the ligature is loose, the sternum is not easy to heal. If the ligature is tight, the steel wire or titanium alloy wire is easy to cut the sternum. The contact area between the steel wire or the titanium alloy wire and the sternum is small, and the pressure intensity at the contact position is large; when a patient coughs or the like, the lungs expand to enable the two sternums to be subjected to larger mutual separation force, and the pressure at the contact part of the steel wire or the titanium alloy wire and the sternum is multiplied, so that the steel wire or the titanium alloy wire can cut the sternum more easily.

After the steel wire or the titanium alloy wire cuts the sternum, the steel wire is easy to loosen along the cutting seam, and negative effects are brought to the normal healing of the sternum.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sternum fixing device prevents to appear not hard up phenomenon after the sternum ligature, provides the condition for the normal healing of sternum.

In order to achieve the above purpose, the sternum fixing device of the present invention comprises a fixing wire, the fixing wire is a steel wire or a titanium alloy wire, and further comprises a pair of sternum fixing kits symmetrically arranged, the sternum fixing kits comprise fixing rings for penetrating the fixing wire, the fixing rings are connected with gaskets, and the gaskets are curved surfaces matched with the sternum; the fixing ring and the shim are both made of steel or memory alloy, and the fixing wire penetrates through the fixing ring of each sternum fixing sleeve.

The surfaces of the gaskets, which are matched with the sternum, are provided with 3-5 anti-slip edges at intervals, tissue protection grooves are defined by the adjacent anti-slip edges and the gaskets, and the anti-slip edges are made of elastic materials.

A plurality of bubbles are uniformly distributed in the anti-slip ribs.

The side surface that anti-skidding arris and gasket meet is the bottom surface of anti-skidding arris, and the side surface that anti-skidding arris and sternum meet is the top surface of anti-skidding arris, and the bottom surface of anti-skidding arris is wider than its top surface, and the cross-section of anti-skidding arris is isosceles trapezoid.

The gasket is equipped with the guide way that is used for the fixed silk of location with the one side surface that solid fixed ring meets.

The four corners of the gasket are both arc chamfer structures.

The utility model discloses have following advantage:

the utility model discloses utilize the gasket to reduce the pressure that the breastbone received because of the ligature by a wide margin, prevent that the breastbone from receiving the too big fracture of pressure, avoid the fixed silk embedding breastbone, can not appear not hard up after guaranteeing the ligature, provide the condition for the normal healing of breastbone.

The force of the compression joint of the anti-slip arris and the sternum is larger, so that the friction force between the sternum fixing device and the sternum is increased, and the sliding after binding is prevented. A tissue protection groove is formed between the adjacent anti-slip edges and the gaskets in a surrounding manner, so that human tissues attached to the surface of the sternum in the tissue protection groove can be protected, and the part of the human tissues is prevented from being necrotic due to blood loss under pressure. The anti-slip arris has elasticity, and can not fracture the sternum and be embedded into the sternum.

The air bubbles are uniformly distributed in the anti-slip arris, so that the elasticity and the deformability of the anti-slip arris can be improved, and the anti-slip arris and the sternum are more stably pressed together. Because the anti-slip ribs have elasticity, when a patient coughs, after the sternum is subjected to force expanding towards two sides, the anti-slip ribs can absorb a large part of impact force through further compression deformation, so that the stress of the fixing wire is reduced, and the fixing wire is prevented from being loosened by impact. After the patient coughs, the antiskid arris is restored to the original shape under the action of the elasticity of the antiskid arris, and the pressing force on the sternum is always kept.

The bottom surface of the antiskid ridge is wider than the top surface of the antiskid ridge, and the force bearing point of the antiskid ridge after being flattened does not exceed the bottom surface of the antiskid ridge, so that the flattened part of the antiskid ridge after being flattened is prevented from exceeding the bottom surface of the antiskid ridge and losing the pressing force.

When being convenient for fix the breastbone, the setting of guide way inlays the fixed silk in the guide way, prevents that the fixed silk from sliding on the gasket surface, improves the ligature quality, and the fixed silk slides on the gasket surface and reduces ligature efficiency when preventing the ligature. The four corners department of gasket is circular arc chamfer structure, can prevent sharp-pointed edges and corners damage the human body.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of a gasket construction;

FIG. 3 is a schematic rear view of the gasket;

fig. 4 is a cross-sectional view of the non-slip rib.

Detailed Description

In order to clearly express the structure of the present invention, the components in fig. 1 are not drawn strictly in actual proportion, if the fixing ring in fig. 1 is drawn in actual proportion, the fixing ring 2, the fixing wire 1 and the gasket 3 would be crowded, and therefore the proportion of the fixing ring 2 in fig. 1 is enlarged to more clearly express the structure between the components.

As shown in fig. 1 to 4, the sternum fixing device of the present invention comprises a fixing wire 1, the fixing wire 1 is a steel wire or a titanium alloy wire, and further comprises a pair of sternum fixing kits symmetrically arranged, the sternum fixing kit comprises a fixing ring 2 for passing the fixing wire 1, the fixing ring 2 is fixedly connected with a gasket 3, the gasket 3 is a curved surface matching with the sternum (only schematically shown in the figure, in practice, the gasket 3 can be made into a plurality of types with different curvatures); the fixing ring 2 and the shim 3 are both made of steel or memory alloy, and the fixing wire 1 passes through the fixing ring 2 of each sternum fixing suite. The gasket 3 has a length of 8 mm + -0.5 mm and a width of 3-4 mm inclusive.

The surface of the gasket 3 matched with the sternum is provided with 3-5 anti-slip ribs 4 at intervals, a tissue protection groove 5 is enclosed between the adjacent anti-slip ribs 4 and the gasket 3, and the anti-slip ribs 4 are made of elastic materials (such as medical plastics).

The anti-slip edge 4 has larger force for pressing with the sternum, thereby increasing the friction force between the sternum fixing device and the sternum and preventing the sternum from sliding after being banded. The tissue protection groove 5 is defined between the adjacent anti-slip ribs 4 and the gasket 3, so that the human tissue attached to the surface of the sternum in the tissue protection groove 5 can be protected, and the part of the human tissue is prevented from being necrotic due to blood loss under pressure. The anti-slip ribs 4 have elasticity and cannot crack the sternum and be embedded into the sternum.

A plurality of air bubbles 6 are uniformly distributed in the anti-slip ribs 4. The air bubbles in the non-slip ribs 4 are foamed during the production. The foamed plastic is prepared by the conventional technology (such as various foamed plastics) and the details are not described.

The air bubbles 6 are uniformly distributed in the anti-slip ribs 4, so that the elasticity and the deformability of the anti-slip ribs 4 can be improved, and the anti-slip ribs 4 and the sternum are more stably pressed together. Because the anti-slip ribs 4 have elasticity, when a patient coughs, after the sternum is subjected to a force expanding towards two sides, the anti-slip ribs 4 can absorb a large part of the impact force through further compression deformation, so that the stress of the fixing wire 1 is reduced, and the fixing wire 1 is prevented from being loosened by the impact. After the patient coughs, the antiskid ribs 4 are restored to the original shape under the action of the elasticity of the antiskid ribs, and the pressing force on the sternum is always kept.

The side surface that anti-skidding arris 4 and gasket 3 meet is the bottom surface of anti-skidding arris 4, and the side surface that anti-skidding arris 4 and sternum meet is the top surface of anti-skidding arris 4, and the bottom surface of anti-skidding arris 4 is wider than its top surface, and the cross-section of anti-skidding arris 4 is isosceles trapezoid.

The bottom surface of the antiskid ridge 4 is wider than the top surface of the antiskid ridge 4, and the force bearing point of the antiskid ridge 4 after being flattened does not exceed the bottom surface of the antiskid ridge 4, so that the flattened part of the antiskid ridge 4 after being flattened is prevented from exceeding the bottom surface of the antiskid ridge 4 and losing the pressing force.

And a guide groove 7 for positioning the fixing wire 1 is arranged on the surface of one side, connected with the fixing ring 2, of the gasket 3. When being convenient for fixed breastbone of setting up of guide way 7, inlay fixed silk 1 in guide way 7, prevent that fixed silk 1 from sliding on 3 surfaces of gasket, improving the ligature quality, fixed silk 1 slides on 3 surfaces of gasket and reduces ligature efficiency when preventing the ligature.

The four corners department of gasket is circular arc chamfer structure, can prevent sharp-pointed edges and corners damage the human body.

When in use, a plurality of sets of breastbone fixing devices are used according to the length of the breastbone, each set of breastbone fixing device is bound at a fixed point of the breastbone, and a plurality of sets of breastbone fixing devices are bound at intervals along the length direction of the breastbone.

During the ligature, make fixed silk 1 drive the utility model provides a one set of solid fixed ring 2 and gasket 3 pass the breastbone, then taut wire rope makes two sets of breastbone fixation external member's gasket 3 all sticiss on the breastbone, then tightens fixed silk 1, can accomplish the ligature action. The utility model discloses utilize 3 great reductions in gasket the breastbone because of the pressure that the ligature received, prevent that the breastbone from receiving the too big fracture of pressure, avoid the fixed silk 1 to imbed the breastbone, can not appear not hard up after guaranteeing the ligature.

The above embodiments are only used for illustrating but not limiting the technical solutions of the present invention, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the present invention may be modified or substituted with equivalents without departing from the spirit and scope of the invention, which should be construed as being limited only by the claims.

Claims

1. Sternum fixing device, including the fixed wire, the fixed wire is steel wire or titanium alloy silk, its characterized in that: the breastbone fixing device also comprises a pair of breastbone fixing external members which are symmetrically arranged, each breastbone fixing external member comprises a fixing ring for penetrating a fixing wire, each fixing ring is connected with a gasket, and each gasket is a curved surface matched with a breastbone; the fixing ring and the shim are both made of steel or memory alloy, and the fixing wire penetrates through the fixing ring of each sternum fixing sleeve.

2. The sternal fixation device of claim 1, where: the surfaces of the gaskets, which are matched with the sternum, are provided with 3-5 anti-slip edges at intervals, tissue protection grooves are defined by the adjacent anti-slip edges and the gaskets, and the anti-slip edges are made of elastic materials.

3. The sternal fixation device of claim 2, where: a plurality of bubbles are uniformly distributed in the anti-slip ribs.

4. The sternal fixation device of claim 2, where: the side surface that anti-skidding arris and gasket meet is the bottom surface of anti-skidding arris, and the side surface that anti-skidding arris and sternum meet is the top surface of anti-skidding arris, and the bottom surface of anti-skidding arris is wider than its top surface, and the cross-section of anti-skidding arris is isosceles trapezoid.

5. The sternal fixation device of any one of claims 1 to 4, where: the gasket is equipped with the guide way that is used for the fixed silk of location with the one side surface that solid fixed ring meets.

6. The sternal fixation device of any one of claims 1 to 4, where: the four corners of the gasket are both arc chamfer structures.