CN216702622U - Deformable memory alloy orthopedic fixation device - Google Patents

Abstract

The utility model discloses a deformable memory alloy orthopedic fixation device which comprises a handle and hook parts, wherein a plurality of hook parts are arranged at the upper end of the handle, and the hook parts are integrally formed by memory alloy materials. And (5) problems are solved. The technical effects achieved are as follows: the deformable memory alloy orthopedic fixing device can be used for positioning the outer side of the femur by using a Kirschner wire, expanding the hole, inserting the tension hook, pulling back the tension hook after the tension hook is changed back to the original shape, and fixing the tail end by using the tail cap, so that the fracture block is firmly fixed.

Description

Deformable memory alloy orthopedic fixation device

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a deformable memory alloy orthopedic fixation device.

Background

In the bone surgery, for the fracture of a specific part and the bone blocks separated from the inner side, the existing method is a mode which is not processed, or a simple large incision is made, after soft tissues are stripped, the bone blocks are pulled back and fixed by screws, and the mode has great damage to patients.

SUMMERY OF THE UTILITY MODEL

Therefore, the present invention provides a deformable memory alloy orthopedic fixation device to solve the above problems in the prior art.

In order to achieve the above purpose, the utility model provides the following technical scheme:

according to a first aspect of the utility model, the deformable memory alloy orthopedic fixing device comprises a handle and a hook part, wherein a plurality of hook parts are arranged at the upper end of the handle, and the hook parts are integrally formed by memory alloy materials.

Further, the hook part is of an arc-shaped bent structure.

Further, the curved shapes of the plurality of hook portions are identical.

Further, still include the external screw thread section, the handle deviates from the one end of crook portion is provided with the external screw thread section.

Further, the bone reamer also comprises a sleeve, wherein the sleeve is used for being inserted into the bone tissue after reaming, and the pulling hook is convenient to insert.

Further, the sleeve is of a plurality of telescopic tubular structures.

Further, the cross section of the handle is the same in diameter from one end of the hook portion toward one end of the external thread section.

Further, the cross-section of the handle is circular.

Further, still include the barb, the crooked inboard of crook portion is provided with the barb.

Further, the barb is a plurality of.

Further, still include the tail cap, the tail cap is provided with the internal thread, the lateral surface of tail cap is regular hexahedron, is used for fixing.

The utility model has the following advantages: the deformable memory alloy orthopedic fixing device can be used for positioning the outer side of the femur by using a Kirschner wire, expanding the hole, inserting the tension hook, pulling back the tension hook after the tension hook is changed back to the original shape, and fixing the tail end by using the tail cap, so that the fracture block is firmly fixed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.

FIG. 1 is a developed structural view of a deformable memory alloy orthopedic fixation device according to some embodiments of the present invention.

FIG. 2 is a schematic diagram of a deformable memory alloy orthopedic fixation device according to some embodiments of the present invention in a contracted configuration.

FIG. 3 is a structural diagram of a deformable memory alloy orthopedic fixation device with barbs according to some embodiments of the present invention.

FIG. 4 is a block diagram of a deformable memory alloy orthopedic fixation device with a sleeve according to some embodiments of the present invention.

Fig. 5 is a structural view of a tail cap of a deformable memory alloy orthopedic fixation device according to some embodiments of the present invention.

In the figure: 1. the handle 2, the hook part 3, the external thread section 4, the barb 5, the sleeve 6 and the tail cap.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the utility model will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the utility model and that it is not intended to limit the utility model to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 4, in an embodiment of the first aspect of the present invention, a deformable memory alloy orthopedic fixation device includes a handle 1 and a hook portion 2, wherein a plurality of hook portions 2 are provided at an upper end of the handle 1, and the hook portions 2 are integrally formed of a memory alloy material.

In the above-described embodiment, the hook portion 2 is in a bent state at room temperature and human body temperature, for example, between 36 ℃ and 37 ℃, and the hook portion 2 is in a straight state as shown in fig. 2 at a temperature of 0 ℃ or lower.

The technical effects achieved by the above embodiment are as follows: through the deformable memory alloy orthopedics fixing device of this embodiment, can fix a position with ke shi needle outside the thighbone, then enlarge the hole, insert the pulling force hook, after the pulling force hook changed back original appearance, draw it back, the tail end is fixed with the hood, has just realized firmly fixing the fracture piece.

Alternatively, as shown in fig. 1 to 4, in some embodiments, the hook portion 2 has an arc-shaped bent structure.

In the above-mentioned alternative embodiment, it should be noted that the specific arc shape of the hook part 2 is set according to actual requirements.

The beneficial effects of the above alternative embodiment are: through setting up crotch portion 2 into arc bending structure, it is convenient to use fixed bone piece, and stability is high.

Alternatively, as shown in fig. 1 to 4, in some embodiments, the curved shapes of the plurality of hook portions 2 are identical.

In the above alternative embodiment, it should be noted that, in addition, the curved shapes of the plurality of hook portions 2 may be different according to actual settings.

The beneficial effects of the above alternative embodiment are: by setting the plurality of hook portions 2 to have the same curved shape, the stress of each hook portion 2 is more uniform in the use process.

Optionally, as shown in fig. 1 to 4, in some embodiments, the handle further includes an external thread section 3, and an end of the handle 1 facing away from the curved hook 2 is provided with the external thread section 3.

In the above alternative embodiment, it should be noted that the external thread section 3 is a coarse thread or a fine thread.

The beneficial effects of the above alternative embodiment are: through setting up external screw thread section 3, realized auxiliary assembly's quick dismantlement and installation.

Optionally, as shown in fig. 1 to 4, in some embodiments, the bone reamer further comprises a sleeve 5, wherein the sleeve 5 is used for inserting into the bone tissue after reaming, a tension hook is convenient to insert, the sleeve 5 is internally unthreaded and is similar to a principle that a tunnel is used for passing, and the fixation of the tail end on the outer side of the cortical bone is completed by a nut.

Alternatively, as shown in fig. 1-4, in some embodiments, the cannula 5 is a plurality of telescoping tubular structures.

In the above-mentioned alternative embodiment, it should be noted that the sleeve 5 is a structure formed by connecting a plurality of circular tubes in sequence.

The beneficial effects of the above alternative embodiment are: the sleeve 5 is set to be of a telescopic tubular structure, so that the use requirements of different scenes are met.

Alternatively, as shown in fig. 1 to 4, in some embodiments, the cross-section of the handle 1 is the same diameter from one end of the hook portion 2 towards one end of the external thread section 3.

In the above alternative embodiment, it should be noted that the handle 1 may also be a constant section column.

The beneficial effects of the above alternative embodiment are: the cost is significantly reduced by the shape of the handle 1.

Alternatively, as shown in fig. 1-4, in some embodiments, the handle 1 is circular in cross-section.

In the above alternative embodiments, it should be noted that the handle 1 may have other shapes.

Optionally, as shown in fig. 1 to 4, in some embodiments, a barb 4 is further included, and the bent inner side of the hook portion 2 is provided with the barb 4.

In the above alternative embodiments, it should be noted that the barbs 4 have a triangular tip configuration, or alternatively, an arcuate tip configuration.

The beneficial effects of the above alternative embodiment are: by providing the barbs 4, the fixing effect is significantly enhanced.

Alternatively, as shown in fig. 1 to 4, in some embodiments, the barbs 4 are plural.

In the above alternative embodiment, it should be noted that the number of barbs 4 is set according to the requirement.

The beneficial effects of the above alternative embodiment are: different stress requirements are met by arranging different numbers of barbs 4.

Optionally, as shown in fig. 5, the tail cap 6 is further included, the tail cap 6 is provided with an internal thread, and an outer side surface of the tail cap 6 is a regular hexahedron for fixing.

Although the utility model has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.

In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship may be made without substantial changes in the technical content.

Claims (9)

1. The deformable memory alloy orthopedic fixing device is characterized by comprising a handle (1) and hook parts (2), wherein a plurality of hook parts (2) are arranged at the upper end of the handle (1), and the hook parts (2) are integrally formed by memory alloy materials; still include external screw thread section (3), handle (1) deviates from the one end of hook portion (2) is provided with external screw thread section (3).

2. A deformable memory alloy orthopaedic fixation device according to claim 1, wherein the curved hook portion (2) is of curved configuration.

3. A deformable memory alloy orthopaedic fixation device according to claim 2, characterized in that the curved shape of said curved hook portions (2) is identical.

4. A deformable memory alloy orthopaedic fixation device according to claim 1, further comprising a cannula (5), the cannula (5) being intended to be inserted into the reamed bone tissue.

5. A deformable memory alloy orthopaedic fixation device according to claim 4, characterized in that said sleeve (5) is a plurality of telescopic tubular structures.

6. A deformable memory alloy orthopaedic fixation device according to claim 1, characterized in that the cross section of the handle (1) is of the same diameter from one end of the hook (2) towards one end of the external threaded section (3).

7. A deformable memory alloy orthopaedic fixation device according to claim 6, wherein the cross-section of the handle (1) is circular.

8. A deformable memory alloy orthopaedic fixation device according to claim 1, characterized in that it further comprises barbs (4), the curved inner side of the hook portion (2) being provided with said barbs (4).

9. A deformable memory alloy orthopaedic fixation device according to claim 8, further comprising a tail cap (6), the tail cap (6) being provided with an internal thread, the external side of the tail cap (6) being a regular hexahedron.

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