WO2023082988A1

WO2023082988A1 - Easy mounting-type iliac wing filling block

Info

Publication number: WO2023082988A1
Application number: PCT/CN2022/127214
Authority: WO
Inventors: 杨庆诚; 程冬冬; 荀世界; 许奎雪
Original assignee: 北京市春立正达医疗器械股份有限公司
Priority date: 2021-11-10
Filing date: 2022-10-25
Publication date: 2023-05-19
Also published as: CN114028034A

Abstract

An easy mounting-type iliac wing filling block, comprising: a filling block body (1) and a knocking rod (2) adaptively connected to the filling block body (1). A knocking area (3) is provided on the filling block body (1), and at least one first knocking groove (4) is formed in the knocking area (3); one end of the knocking rod (2) is provided with an insertion column (21) which is in insertion fit with the first knocking groove (4). The filling block has the advantages that a structural design of the knocking area (3) and the knocking groove (4) in the knocking area (3) works in conjunction with a structural design of the knocking rod (2), so that normal bone ingrowth and soft tissue crawling are not affected while a bone trabecula structure (5) on the surface of the filling block body (1) is protected.

Description

An easy-to-install iliac wing filler block

Cross References to Related Applications

This application claims the benefit of Chinese Application No. 2021113247178 filed on November 10, 2021. Said application number 2021113247178 is hereby incorporated by reference in its entirety.

technical field

The invention relates to the technical field of medical prosthesis, in particular to an easy-to-install iliac wing filling block.

Background technique

The body of the ilium is thick, forming the upper 2/5 of the acetabulum, and the wing of the ilium is a broad bone plate above the body, and the middle part is thinner. Its upper edge is hypertrophic and called the iliac crest. The front end of the iliac crest is the anterior superior iliac spine, 5-7cm behind the anterior superior iliac spine, and the junction of the anterior and middle 1/3 of the iliac crest protrudes outward, which is called the iliac tubercle. Both the anterior superior iliac spine and the iliac tubercle are important bony sign. Because the bone quality of the ilium is cancellous bone, and the bone mass is relatively large, part of the ilium is often taken as a material for human bone transplantation in clinical medical operations. , Tumor, nonunion, bone trauma, etc.;

Although the existing iliac wing prosthesis needs to be knocked into during installation, the surface has a bone trabecular network structure, which cannot bear too much force. Stability in the later stage; in addition, the spherical screw that enters the nail channel when driving is a hollow screw, which will reduce the strength of the screw, which is easy to break and difficult to screw in.

Contents of the invention

The present invention provides an easy-to-install iliac wing filling block, with the purpose of overcoming at least one of the above-mentioned technical defects, so as to prevent the iliac wing filling block from being deformed due to knocking during installation, and at the same time improve the stability of prosthesis implantation.

In order to realize the foregoing invention object, the present invention provides following technical scheme:

An easy-to-install ilium wing filling block, comprising: a filling block body and a knocking rod fitted and connected to the filling block main body, a knocking area is provided on the filling block body, and a knocking area is arranged on the knocking area There is at least one No. 1 knocking groove inside; one end of the knocking rod is provided with an insertion column that fits into the No. 1 knocking groove;

Wherein, the filling block body is a solid structure.

Preferably, the No. 1 knocking groove is cylindrical with a diameter of 3-5mm, and the concave depth of the No. 1 knocking groove is 3-5mm;

Wherein, the diameter and length of the insertion post are adapted to the No. 1 knocking groove.

Preferably, the knocking rod further includes a connecting column and a force transmission column provided with convoluted grooves at equal intervals along its length direction, the insertion column, the connection column, and the force transmission column are connected in sequence;

Wherein, the length and diameter of the insertion column, the connection column, and the force transmission column increase sequentially, and the longitudinal section of the force transmission column is an isosceles trapezoid.

Preferably, at least one screw channel and a screw adapted to the screw channel are opened in the filler block body, the insertion end of the screw has three cutting edges, and the screw cap is provided with an opening upward, and No. 2 knocking groove to fit the insertion post.

Preferably, the three cutting edges equally divide the insertion end of the screw, that is, the opening angle of each cutting edge is 120°.

Preferably, at least one ilium wing filling clip is provided on the front and rear sides of the filler block body.

Preferably, the part of the filling block body outside the percussion area is provided with a bone trabecular structure.

An easy-to-install iliac wing filling block of the present invention has the advantages of:

1. The structural design of the knocking area and the knocking groove in the knocking area in the structure of the utility model, combined with the structural design of the knocking rod, can protect the trabecular bone structure on the surface of the filling block body without affecting the normal Bone ingrowth and soft tissue crawling;

2. The specific structural design of the screw inserted into the nail channel of the filling block body, such as the design of three sharp cutting edges at the insertion end, makes the structure of the utility model need not be screwed in when it is fixed after implantation, and the screw as a whole is a solid body To enhance the strength of the screw, you can also use the knocking rod to align with the No. 2 knocking groove on the nut and knock into the screw;

3. The surface of the screw is sprayed with Ti+HA, which is a bioactive material, which is convenient for bone ingrowth, not only increases the stability of the screw, but also greatly increases the fixation effect to make the prosthesis stable and firm;

4. The body of the filling block and the screws are driven in with a percussion rod, which greatly reduces the operation time and the patient's blood loss, and the exposure time of the surgical incision is short, which reduces the infection rate and enables the recovery of the patient to recover better.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification to explain the present invention together, but not to limit the present invention. In the attached picture:

Fig. 1 is a structural schematic diagram of an easy-to-install iliac wing filling block of the present invention;

Fig. 2 is a partially cut-away structural schematic diagram of an easy-to-install ilium wing filling block of the present invention when it is not connected with a percussion rod;

Fig. 3 is a schematic structural view of the filling block body of the present invention;

Fig. 4 is the structural representation of knocking bar;

Fig. 5 is the structural representation of screw;

in:

Filling block body 1, nail channel 11, percussion rod 2, insertion column 21, connecting column 22, swivel groove 23, force transmission column 24;

Percussion area 3, No. 1 percussion groove 4, trabecular bone structure 5, screw 6, cutting edge 61, nail cap 62, No. 2 percussion groove 63, iliac wing filling clip 7.

Detailed ways

The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

It should be noted that when a component is referred to as being “fixed on” or “disposed on” another component, it may be directly or indirectly located on the other component. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. The indicated orientation or position is based on the orientation or position shown in the drawings, and is only for convenience of description, and should not be construed as a limitation on the technical solution. The terms "first", "second", "one number" and "number two" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of technical features. "Plurality" means two or more, unless otherwise clearly and specifically defined.

In order to improve the stability of the prosthesis after implantation and avoid damage to the trabecular structure of the prosthesis, the present invention provides an easy-to-install iliac wing filler block as shown in Figures 1-4, which mainly includes: The filling block body 1 and the knocking rod 2 fit and connected with the filling block body 1, the filling block body 1 is provided with a knocking area 3, and at least one number one is arranged in the knocking area 3 Hitting the groove 4; one end of the knocking rod 2 is provided with an insertion column 21 that is plugged and adapted to the No. 1 knocking groove 4; wherein, the filler block body 1 is a solid structure, so that the During the process, the filling block body 1 has a good bearing capacity, and the prosthesis can be easily implanted after knocking, so that the prosthesis is also very stable after implantation. Further, the part of the filling block body 1 outside the percussion area 3 is provided with a trabecular bone structure 5, so that the trabecular bone structure 5 is not affected when percussion is driven in, and at the same time it is convenient to drive in.

Specifically, in the embodiment, in order to facilitate driving into the utility model, the No. 1 knocking groove 4 is cylindrical, and its diameter is 3-5mm, and the concave depth of the No. 1 knocking groove 4 3-5mm; wherein, the diameter and length of the insertion post 21 are adapted to the No. 1 knocking groove 4 .

In a specific embodiment, in order to improve the holding strength when knocking, as shown in Figure 4, the knocking stick 2 also includes a connecting column 22, a force transmission column with swirl grooves 23 equidistant along its length direction. 24, the insertion column 21, the connecting column 22, and the force transmission column 24 are sequentially connected; wherein, the length and diameter of the insertion column 21, the connection column 22, and the force transmission column 24 increase sequentially Large, the longitudinal section of the force transmission column 24 is an isosceles trapezoid, so that the force transmission is concentrated during the knocking process, which is convenient for fast driving without slipping and displacement.

In a specific embodiment, in order to shorten the operation time, reduce the amount of bleeding, make the surgical incision exposure time short, and reduce the infection rate, at least one nail channel 11 is opened in the filler block body 1 and is adapted to the nail channel 11 The screw 6, the insertion end of the screw 6 has three cutting edges 61 (as shown in Figure 5), the cap 62 of the screw 6 is provided with a No. Tap the groove 63. In a specific implementation process, the screw 6 is a solid screw 6 . Specifically, three cutting edges 61 divide the insertion end of the screw 6 equally, that is, the opening angle of each cutting edge 61 is 120°; so that the insertion end of the screw 6 is a sharp point, It is convenient to tap into the bone, so as to quickly realize the fixation of the prosthesis after implantation.

In order to promote bone ingrowth and increase the stability of the screw 6 in the later stage, thereby increasing the stability of the iliac wing prosthesis, the surface of the screw 6 is sprayed with active material Ti+HA.

In a specific embodiment, at least one ilium wing filling clip 7 is provided on the front and back sides of the filler body 1 to increase the stability of the prosthesis in the bone. Specifically, the sizes of the several iliac wing filling clips 7 are equal or unequal, and further, an iliac wing filling clip is provided on one of the two sides of the prosthesis after the structure of the present invention is implanted. 7. And because this prosthesis will be applicable to different patients, so the fitting property of iliac crest wing filling clamp 7 is not very good, causes inconvenient installation in the book, so iliac crest wing filling clamp 7 can be through tool in operation Cutting it off makes the prosthesis more convenient to fit with the bone, increases the fit, facilitates the later bone ingrowth, and greatly increases the stability of the prosthesis in the later stage.

The structures that are not described in detail in the present invention are available by conventional means in the technical field, and thus will not be described in detail.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

An easy-to-install ilium wing filler, characterized in that it includes a filler body (1) and a knocking rod (2) that is fitted and connected to the filler body (1), and the filler body ( 1) is provided with a knocking area (3), and at least one No. 1 knocking groove (4) is provided in the knocking area (3); one end of the knocking rod (2) is provided with the The No. 1 percussion groove (4) is plugged into a suitable insertion post (21);

Wherein, the filling block body (1) is a solid structure.
An easy-to-install ilium wing filling block according to claim 1, characterized in that: the No. 1 percussion groove (4) is cylindrical, and its diameter is 3-5mm, and the No. 1 percussion The concave depth of the groove (4) is 3-5mm;

Wherein, the diameter and length of the insertion post (21) are adapted to the No. 1 knocking groove (4).
An easy-to-install ilium wing filling block according to claim 1, characterized in that: the percussion rod (2) also includes a connecting column (22), and a swivel groove ( 23) the force transmission column (24), the insertion column (21), the connecting column (22), and the force transmission column (24) are connected in sequence;

Wherein, the length and diameter of the insertion column (21), the connection column (22), and the force transmission column (24) increase sequentially, and the longitudinal section of the force transmission column (24) is isosceles trapezoidal.
An easy-to-install iliac wing filler block according to claim 1, characterized in that: at least one screw channel (11) is opened in the filler block body (1) and adapted to the screw channel (11) screw (6), the insertion end of the screw (6) has three cutting edges (61), and the cap of the screw (6) is provided with an opening that is upward and adapted to the insertion column (21). No. 2 knocks the groove (63).
An easy-to-install iliac wing filling block according to claim 1, characterized in that: three cutting edges (61) equally divide the insertion end of the screw (6), that is, each of the cutting edges The opening angle of (61) is 120 °.
The easy-to-install iliac wing filling block according to claim 1, characterized in that: at least one ilium wing filling clip (7) is provided on the front and rear sides of the filling block body (1).
An easy-to-install iliac wing filling block according to any one of claims 1-6, characterized in that: the part of the filling block body (1) outside the percussion area (3) is provided with bone Trabecular structure (5).