CN216417303U

CN216417303U - Novel intramedullary fixation structure

Info

Publication number: CN216417303U
Application number: CN202120828266.0U
Authority: CN
Inventors: 梁成; 鲁晓波; 刘晋珲; 阳运康; 段可; 卓乃强; 葛建华; 叶俊武
Original assignee: Affiliated Hospital of Southwest Medical University
Current assignee: Affiliated Hospital of Southwest Medical University
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2022-05-03
Anticipated expiration: 2031-04-21

Abstract

The utility model discloses a novel intramedullary fixing structure, which is an intramedullary nail, an elastic intramedullary nail or a Kirschner wire with a novel tip; the novel tip shape is divided into a forward tilting type, a vertical type and a backward tilting type, and the proper tip shape, the tip bending angle and the diameter of the novel intramedullary fixing device are selected according to the bending angle of the tubular medullary cavity and the size of the medullary cavity respectively; novel intramedullary fixation device tail end is bent with corresponding instrument of bending, utilizes to compress tightly the bone nail and compresses tightly the tail end after the gasket will be bent and compress tightly and fix on tubulose bone surface, and the simple and easy fixed simple operation of tail end is simple and convenient practical.

Description

Novel intramedullary fixation structure

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a novel intramedullary fixing structure for tubular bone fracture.

Background

For tubular bone fracture caused by external force injury such as violent impact, the adoption of the internal fixing mode of the nail locking plate, the straight plate and other steel plates has the defects of large operation incision, long wound recovery time, higher operation cost and the like; in order to overcome the defects, a minimally invasive intramedullary implantation fixing mode is developed to repair the fracture. The novel intramedullary fixing device has the advantages of small incision, short wound recovery time, simple and convenient operation, simple implantation and disassembly of the implant, simple use tools and low operation cost. The implant and the operation technique thereof have important significance for improving the clinical curative effect aiming at the minimally invasive repair of the tubular bone fracture.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel intramedullary fixation structure for solving the technical problems.

The technical scheme adopted by the utility model is as follows: the novel intramedullary fixing structure comprises a novel intramedullary fixing device, a compression gasket and a compression bone nail; the novel intramedullary fixation device comprises but is not limited to intramedullary nails, elastic intramedullary nails, Kirschner wires and the like; the compression gasket can be attached to the shape of the bone surface, the contactable part is round and smooth, the nail head of the compression bone nail part sinks into the compression gasket, the whole nail head is round and smooth, and the smooth and round part is in contact with tissues such as muscle, skin and the like of a human body to prevent irritation; the novel intramedullary fixing device is implanted by using a surgical tool according to the shape of the medullary cavity to connect and fix the fracture block, the tail end of the fracture block is bent by using a bending tool, and the novel intramedullary fixing device is matched with a compression gasket and a compression bone nail to be fixed on the surface of a bone, so that the novel intramedullary fixing device is prevented from moving out of the medullary cavity and the like.

Furthermore, the novel intramedullary fixing device is divided into three types according to functions and the shape of the tip, namely a forward-tilting novel intramedullary fixing device, a vertical novel intramedullary fixing device and a backward-tilting novel intramedullary fixing device.

Furthermore, the forerake type novel intramedullary fixing device and the retroversion type novel intramedullary fixing device are provided with a tip and a blunt tail; the transverse size of the tip of the forerake type novel intramedullary fixing device and the retroversion type novel intramedullary fixing device is smaller than the transverse size of the blunt tail of the forerake type novel intramedullary fixing device and the retroversion type novel intramedullary fixing device, and the three sizes are connected in a smooth transition mode, so that the novel intramedullary fixing device and the retroversion type intramedullary fixing device are guaranteed to have enough holding force after being implanted into a medullary cavity; the apex of the forerake type novel intramedullary fixing device inclines forwards, the inclination angle ranges from minus 80 degrees to 80 degrees, and the inclination angle is 30 degrees in the example of the figure; the tip of the retroversion type novel intramedullary fixing device is retroverted, the inclination angle ranges from minus 80 degrees to 80 degrees, and the inclination angle is 30 degrees in the example of the figure; the transverse size of the vertical tip of the novel vertical intramedullary fixing device is smaller than the diameter size of the novel intramedullary fixing device body, the sizes of the vertical tip and the novel intramedullary fixing device body are changed in a step shape, the transverse sizes are in smooth transition connection, the vertical tip has no inclination angle, and the purpose is to ensure that the novel intramedullary fixing device has enough holding force after being implanted into a medullary cavity; the novel intramedullary fixing device is round and smooth in whole and has no sharp acute angle.

Furthermore, the vertical novel intramedullary fixing device is provided with a vertical tip; the three novel intramedullary fixing devices are provided with a curved neck, a novel intramedullary fixing device body, a tail end and a tip positioning mark; the bent neck is smooth and has a certain angle, and the bent neck angle is matched according to the angulation of the medullary cavity of the tubular bone and the curve of the medullary cavity; the diameter of the novel intramedullary fixing device body is matched according to the inner diameter of the tubular marrow cavity; the tip positioning mark is used for determining the direction of the tip of the novel intramedullary fixing device, so that the position and the direction of the tip of the novel intramedullary fixing device can be conveniently adjusted, and the intramedullary bending of the novel intramedullary fixing device is facilitated.

Further, the bending angle of the three novel intramedullary fixation devices is different according to the use of the tubular bone, and the angle range is as follows: 135 to 180 °; the diameter of the three novel intramedullary fixing devices is different according to the used tubular bone, and the diameter range is as follows: 0.8mm to 10 mm; when the diameter is larger, the novel intramedullary fixing device body is hollow.

The utility model has the beneficial effects that: under the minimal access incision, stable restoration of tubular bone fracture is carried out to bend the tail end, stabilize fixedly with compressing tightly the gasket and compressing tightly the bone nail, it is fixed reliable, tail end fixed dimension is petite mellow and full, the simple operation, the implantation of implant and the flow of taking out are simple convenient, do benefit to the dismantlement.

Drawings

Fig. 1 is a schematic view of three novel intramedullary fixation devices of the present invention.

Fig. 2 is a schematic view of the angle of the bending neck and the body diameter of the novel intramedullary fixation device of the present invention.

Fig. 3 is a side view characteristic schematic diagram of three novel intramedullary fixation devices of the present invention.

Fig. 4 is a front view characteristic diagram of three novel intramedullary fixation devices of the present invention.

Fig. 5 is a schematic view of the clavicle fracture repair of the novel intramedullary fixation device of the present invention.

Labeled as: A. a novel intramedullary fixation device; B. compressing the gasket; C. compressing the bone nail; D. a clavicle; a1, top; a2, blunt tail; a3, bending neck; a4, a novel intramedullary fixation device body; a5, tail end; a6, vertical tip; a7, a tip positioning mark; I. a forward-leaning novel intramedullary fixation device; II. A vertical novel intramedullary fixation device; III, a retroversion type novel intramedullary fixing device.

Detailed Description

In the description of the present invention, it should be noted that the terms "front", "upper", "lower", "left", "right", "vertical", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model is further described below with reference to the accompanying drawings.

Examples

As shown in fig. 1, 2, 3, 4 and 5, this example provides a novel intramedullary fixation device repair of a clavicle fracture and a tail end simple fixation thereof. The novel intramedullary fixation structure comprises: the novel intramedullary fixing device A, the pressure regulating tight gasket B and the compression bone nail C; novel intramedullary fixation device a contains the characteristic: an apex A1, a blunt tail A2, a curved neck A3, a novel intramedullary bone nail device body A4, a tail end A5, a vertical apex A6 and an apex positioning mark A7; the novel intramedullary fixation device A is divided into: the intramedullary nail comprises a forward-tilting novel intramedullary fixing device I, a vertical novel intramedullary fixing device II and a backward-tilting novel intramedullary fixing device III.

In an example, a physician obtains fracture typing and fracture location information from patient CT data and selects a new intramedullary fixation device of appropriate length, diameter and characteristic dimensions. A doctor determines the access position of the novel intramedullary fixing device, opens a minimally invasive incision and opens a hole at the position corresponding to the clavicle by using an opener; inserting the novel intramedullary fixing device to adjust the position and the angle of the tip according to the tip positioning mark and controlling the novel intramedullary fixing device to bend in a medullary cavity; when the tip of the novel intramedullary fixing device reaches the cancellous bone part at the other end of the sclerotin, stopping insertion; and bending the tail end, and suturing the wound to finish the repair operation by using the compression bone nail to compress the novel intramedullary fixing device at the position of the clavicle entrance by using the compression bone nail. After the clavicle fracture is completely healed, cutting the old incision, unscrewing the compression bone nail, taking down the compression gasket, and finally taking out the novel intramedullary fixation device; the wound was sutured.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Novel intramedullary fixed knot constructs, its characterized in that: comprises a novel intramedullary fixing device (A), a compression gasket (B) and a compression bone nail (C); novel intramedullary fixation devices (a) include, but are not limited to, intramedullary nails, k-wires; the pressing gasket (B) is attached to the shape of the bone surface, the contactable part is round and smooth, part of the nail head of the pressing bone nail (C) sinks into the pressing gasket, and the whole nail head is round and smooth; the novel intramedullary fixing device (A) is connected with and fixes a fracture block according to the shape of a medullary cavity, the tail end (A5) is bent through a bending tool, and a compression gasket (B) and a compression bone nail (C) are matched to be fixed on the surface of a bone.

2. The novel intramedullary fixation structure of claim 1, wherein: the novel intramedullary fixing device (A) is divided into three types according to functions and the shape of a tip, namely a forward-inclined novel intramedullary fixing device (I), a vertical novel intramedullary fixing device (II) and a backward-inclined novel intramedullary fixing device (III).

3. The novel intramedullary fixation structure of claim 2, wherein: the anteverted novel intramedullary fixing device (I) and the retroverted novel intramedullary fixing device (III) are provided with a tip (A1) and a blunt tail (A2); the vertical novel intramedullary fixing device (II) is provided with a vertical tip (A6); the three novel intramedullary fixation devices all comprise a curved neck (A3), a novel intramedullary fixation device body (A4), a tail end (A5) and a tip positioning mark (A7).

4. The novel intramedullary fixation structure of claim 2, wherein: the three novel intramedullary fixation devices (A) have a bending angle theta in accordance with the difference of the used tubular bones, and the angle ranges are as follows: 135 to 180 °; the diameter D of the three novel intramedullary fixing device bodies (A4) has the diameter range according to different tubular bones: 0.8mm to 10 mm; when the diameter is larger than 3mm, the novel intramedullary fixing device body (A4) is hollow.

5. The novel intramedullary fixation structure of claim 2, wherein: the transverse size of the apex (A1) of the anteverted novel intramedullary fixing device (I) and the retroverted novel intramedullary fixing device (III) is smaller than that of the blunt tail (A2), and the transverse size of the apex (A1) of the anteverted novel intramedullary fixing device and the retroverted novel intramedullary fixing device are both smaller than the diameter size of the blunt tail (A4), and the three sizes are connected in a smooth transition mode.

6. The novel intramedullary fixation structure of claim 2, wherein: the apex (A1) of the forward-inclined novel intramedullary fixing device (I) inclines forwards at an inclination angle ranging from-80 degrees to 80 degrees, and the apex (A1) of the backward-inclined novel intramedullary fixing device (III) inclines forwards at an inclination angle ranging from-80 degrees to 80 degrees; the transverse size of a vertical tip (A6) of the novel vertical intramedullary fixing device (II) is smaller than the diameter size of a novel intramedullary fixing device body (A4), the sizes of the vertical tip and the novel intramedullary fixing device body are changed in a step shape, the transverse sizes are in smooth transition connection, and the vertical tip (A6) has no inclination angle; the novel intramedullary fixing device (A) is round and smooth as a whole and has no sharp acute angle.