CN219000740U

CN219000740U - Phalangeal prosthesis structure

Info

Publication number: CN219000740U
Application number: CN202223448183.2U
Authority: CN
Inventors: 杨子易
Original assignee: Beijing AK Medical Co Ltd
Current assignee: Beijing AK Medical Co Ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-05-12
Anticipated expiration: 2032-12-20

Abstract

The present utility model provides a phalangeal prosthesis structure comprising: a phalangeal prosthesis; the implantation terrace is arranged at the head of the phalangeal prosthesis, and a preset acute angle is formed between the axis of the implantation terrace and the axis of the phalangeal prosthesis. The technical scheme of the application effectively solves the problem that the phalangeal prosthesis structure in the related technology does not accord with the physiological structure of a human body, so that the use function of the finger is limited.

Description

Phalangeal prosthesis structure

Technical Field

The utility model relates to the field of medical instruments, in particular to a phalangeal prosthesis structure.

Background

The application publication number CN211911898U of Chinese patent application provides a PEEK material 3D prints phalangeal prosthesis model, including phalangeal prosthesis bottom, phalangeal prosthesis trunk and phalangeal prosthesis head, the middle part of phalangeal prosthesis bottom is equipped with the prosthetic handle, and the prosthetic handle runs through phalangeal prosthesis bottom to extend to the inside of phalangeal prosthesis trunk, be equipped with two apertures that are used for fixed distal ligament on the phalangeal prosthesis head, the aperture transversely runs through phalangeal prosthesis head, and the joint of phalangeal prosthesis head is smooth circular-arc. Wherein, the finger bone prosthesis head is connected with the autologous finger bone of the human body near end, and the prosthesis handle is connected with the autologous finger bone of the human body far end.

Because the axis of the prosthesis handle in the related art is coincident with the axis of the bottom of the phalangeal prosthesis, the phalangeal prosthesis does not conform to the physiological structure of a human body, so that the finger use function of the human body after the phalangeal replacement operation is limited.

Disclosure of Invention

The utility model mainly aims to provide a phalangeal prosthesis structure to solve the problem that the phalangeal prosthesis structure in the related technology does not accord with the physiological structure of a human body, so that the use function of fingers is limited.

In order to achieve the above object, the present utility model provides a phalangeal prosthesis structure comprising: a phalangeal prosthesis; the implantation terrace is arranged at the head of the phalangeal prosthesis, and a preset acute angle is formed between the axis of the implantation terrace and the axis of the phalangeal prosthesis.

Further, the implant abutment is an integrally formed piece with the phalangeal prosthesis.

Further, the predetermined acute angle is between 25 degrees and 30 degrees.

Further, a connecting hole is arranged at the bottom of the phalangeal prosthesis, and a fastener is arranged in the connecting hole in a penetrating way.

Further, the number of the connecting holes and the fasteners is two, the axes of the two connecting holes are arranged at an angle, and each connecting hole penetrates through the bottom surface of the bottom of the phalangeal prosthesis from the side surface of the bottom of the phalangeal prosthesis.

Further, the head of the phalangeal prosthesis is provided with a first porous structural layer.

Further, the pore size of the first porous structure layer is between 600 micrometers and 1000 micrometers, the wire diameter of the first porous structure layer is between 350 micrometers and 750 micrometers, and the porosity of the first porous structure layer is between 50% and 80%.

Further, the bottom of the phalangeal prosthesis is provided with a second porous structural layer.

Further, the pore size of the second porous structure layer is between 600 microns and 1000 microns, and the porosity of the second porous structure layer is between 50% and 80%.

Further, the implant mesa comprises a quadrangular mesa.

By applying the technical scheme of the utility model, the phalangeal prosthesis structure comprises: phalangeal prostheses and implant prisms. The implantation terrace is arranged at the head of the phalangeal prosthesis. The phalangeal prosthesis can be connected with an autologous phalangeal bone at the proximal end of a human body, and the implantation prismatic table can be inserted into the autologous phalangeal bone at the distal end of the human body. The axis of the implantation terrace and the axis of the phalangeal prosthesis form a preset acute angle. Therefore, because a preset acute angle exists between the axis of the implantation terrace and the axis of the phalangeal prosthesis, the implantation terrace and the phalangeal prosthesis can accord with the physiological structure of a human body, and the problem that the use function of fingers of the human body is limited after the phalangeal replacement operation is avoided. Because the axis of the implanted terrace is not coincident with the axis of the phalangeal prosthesis, the problem that the axis of the prosthesis handle in the related technology is coincident with the axis of the phalangeal prosthesis bottom, so that the phalangeal prosthesis structure is not in line with the physiological structure of a human body and the use function of the finger is limited is avoided. Therefore, the technical scheme effectively solves the problem that the finger bone prosthesis structure in the related technology does not accord with the physiological structure of a human body, so that the finger using function is limited.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 shows a schematic perspective view of an embodiment of a phalangeal prosthesis structure according to the utility model at a first view angle;

FIG. 2 illustrates a schematic perspective view of a second view of the embodiment of the phalangeal prosthesis structure of FIG. 1;

FIG. 3 shows a schematic side view of an embodiment of the phalangeal prosthesis structure of FIG. 1;

fig. 4 shows a schematic top view of an embodiment of the phalangeal prosthesis structure of fig. 1.

Wherein the above figures include the following reference numerals:

10. a phalangeal prosthesis; 11. a connection hole; 12. a first porous structural layer; 13. a second porous structural layer;

20. implanting a terrace; 21. a quadrangular frustum pyramid;

A. an acute angle is preset.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

As shown in fig. 1 to 4, the phalangeal prosthesis structure of the present embodiment includes: phalangeal prosthesis 10 and implant prism table 20. An implant abutment 20 is disposed on the head of the phalangeal prosthesis 10. The axis of the implant terrace 20 is at a predetermined acute angle a with respect to the axis of the phalangeal prosthesis 10.

By applying the technical scheme of the embodiment, the phalangeal prosthesis structure comprises: phalangeal prosthesis 10 and implant prism table 20. An implant abutment 20 is disposed on the head of the phalangeal prosthesis 10. The phalangeal prosthesis 10 is capable of being connected to an autologous phalangeal bone at the proximal end of the human body, and the implant abutment 20 is capable of being inserted into the autologous phalangeal bone at the distal end of the human body. The axis of the implant terrace 20 is at a predetermined acute angle a with respect to the axis of the phalangeal prosthesis 10. In this way, the preset acute angle A exists between the axis of the implantation terrace 20 and the axis of the phalangeal prosthesis 10, so that the implantation terrace 20 and the phalangeal prosthesis 10 can conform to the physiological structure of a human body, and the problem of limited finger use function of the human body after the phalangeal replacement operation is avoided. Because the axis of the implanted terrace 20 is not coincident with the axis of the phalangeal prosthesis 10, the problem that the axis of the prosthesis handle in the related art is coincident with the axis of the bottom of the phalangeal prosthesis 10, so that the phalangeal prosthesis structure is not in line with the physiological structure of a human body and the using function of the finger is limited is avoided. Therefore, the technical scheme of the embodiment effectively solves the problem that the finger bone prosthesis structure in the related technology does not accord with the physiological structure of a human body, so that the finger using function is limited.

As shown in fig. 1 to 4, the implantation rib stand 20 and the phalangeal prosthesis 10 are integrally formed as one part, so that the implantation rib stand 20 and the phalangeal prosthesis 10 are more stable and reliable, and the structural strength of the phalangeal prosthesis structure is increased, so that the phalangeal prosthesis structure is more stable and reliable in use.

In this embodiment, the implantation prism table 20 and the phalangeal prosthesis 10 are preferably integrally formed by 3D printing technology to shorten the processing time, and the implantation prism table 20 and the phalangeal prosthesis 10 are preferably made of titanium alloy with verified biocompatibility. The head of the phalangeal prosthesis 10 is connected with the autologous phalangeal bone of the distal end of the human body, and the bottom of the phalangeal prosthesis 10 is connected with the autologous phalangeal bone of the proximal end of the human body. The phalangeal prosthesis 10 is preferably a middle phalangeal prosthesis or a proximal phalangeal prosthesis of a finger.

As shown in fig. 1 to 4, the design is performed according to the form of the human body's own phalanges, and the preset acute angle a is between 25 degrees and 30 degrees, so that the phalanges prosthesis structure conforms to the physiological structure of the human body's finger.

As shown in fig. 1 to 4, the phalangeal prosthesis 10 is provided at the bottom with a coupling hole 11, and a fastener is inserted into the coupling hole 11. In this way, the fastener can be inserted through the coupling hole 11 formed at the bottom of the phalangeal prosthesis 10 to be coupled with the body's proximal autogenous phalanx, so that the phalangeal prosthesis structure can be fixedly coupled with the body's autogenous phalanx.

In this embodiment, the fastener is preferably a screw having a diameter of 1.5 mm, and the attachment hole 11 is preferably a screw hole having a diameter of 1.5 mm. In order to further improve the tightness of the connection between the bottom of the phalangeal prosthesis 10 and the proximal autogenous phalangeal bone of the human body, the proximal autogenous phalangeal bone of the human body may be osteotomy so that the plane of the proximal autogenous phalangeal bone of the human body after osteotomy can be in parallel contact with the bottom of the phalangeal prosthesis 10 to improve the degree of fit.

As shown in fig. 1 to 4, the number of the connecting holes 11 and the fasteners is two, so that the connection between the phalangeal prosthesis structure and the autologous phalanges at the proximal end of the human body is more stable and reliable. The axes of the two connecting holes 11 are arranged at an angle, and each connecting hole 11 penetrates the bottom surface of the phalangeal prosthesis 10 from the side surface of the bottom of the phalangeal prosthesis 10. Such an arrangement facilitates the insertion of the fastener from the side of the bottom of the phalangeal prosthesis 10, facilitating the threading of the fastener into the attachment aperture 11.

As shown in fig. 1 to 4, the head of the phalangeal prosthesis 10 is provided with a first porous structural layer 12. The first porous structure layer 12 is disposed such that when the autologous phalanges at the distal end of the human body grow, the first porous structure layer 12 can be grown into, so that the connection between the head of the phalangeal prosthesis 10 and the autologous phalanges at the distal end of the human body is more reliable and stable, and the stability and reliability of the phalangeal prosthesis structure in use are further improved.

As shown in fig. 1 to 4, in order to facilitate the growth of autologous phalanges at the distal end of the human body, the first porous structure layer 12 can be grown into the first porous structure layer 12 without affecting the structural strength of the phalangeal prosthesis structure, the pore size of the first porous structure layer 12 is between 600 micrometers and 1000 micrometers, the wire diameter of the first porous structure layer 12 is between 350 micrometers and 750 micrometers, and the porosity of the first porous structure layer 12 is between 50% and 80%.

As shown in fig. 1 to 4, the bottom of the phalangeal prosthesis 10 is provided with a second porous structure layer 13. The second porous structure layer 13 is disposed such that when the autologous phalanges at the proximal end of the human body grow, the phalanges can grow into the second porous structure layer 13, so that the connection between the bottom of the phalanges prosthesis 10 and the autologous phalanges at the proximal end of the human body is more reliable and stable, and the stability and reliability of the phalanges prosthesis structure in use are further improved.

As shown in fig. 1 to 4, in order to facilitate the growth of autologous phalanges at the proximal end of the human body, the second porous structure layer 13 can be grown into the body without affecting the structural strength of the phalangeal prosthesis structure, the pore size of the second porous structure layer 13 is between 600 micrometers and 1000 micrometers, and the porosity of the second porous structure layer 13 is between 50% and 80%.

As shown in fig. 1-4, the implant pyramid 20 includes a pyramid 21. The implanted terrace with edges 20 inserts in the autologous phalanges of human distal end, owing to the setting of terrace with edges 21 for the terrace with edges 21 in the autologous phalanges of inserting human distal end can not produce relative rotation with the autologous phalanges of human distal end, in order to avoid producing relative rotation between implanted terrace with edges 20 and the autologous phalanges of human distal end, so that the phalangeal prosthesis structure is more stable when using.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A phalangeal prosthesis structure comprising:

a phalangeal prosthesis;

the implantation prismatic table (20) is arranged at the head of the phalangeal prosthesis (10), and a preset acute angle (A) is formed between the axis of the implantation prismatic table (20) and the axis of the phalangeal prosthesis (10).

2. The phalangeal prosthesis structure according to claim 1, characterized in that the implantation plateau (20) is one piece integrally formed with the phalangeal prosthesis (10).

3. The phalangeal prosthesis structure according to claim 1, characterized in that the preset acute angle (a) is between 25 and 30 degrees.

4. The phalangeal prosthesis structure according to claim 1, characterized in that the phalangeal prosthesis (10) is provided with a connecting hole (11) on the bottom, the fastener being threaded into the connecting hole (11).

5. The phalangeal prosthesis structure according to claim 4, characterized in that the number of the connecting holes (11) and the fasteners is two, the axes of the two connecting holes (11) are arranged at an angle, and each connecting hole (11) penetrates the bottom surface of the phalangeal prosthesis (10) from the side surface of the bottom of the phalangeal prosthesis (10).

6. The phalangeal prosthesis structure according to claim 1, characterized in that the head of the phalangeal prosthesis (10) is provided with a first porous structure layer (12).

7. The phalangeal prosthesis structure according to claim 6, characterized in that the pore size of the first porous structure layer (12) is between 600 and 1000 microns, the wire diameter of the first porous structure layer (12) is between 350 and 750 microns, the porosity of the first porous structure layer (12) is between 50 and 80%.

8. The phalangeal prosthesis structure according to claim 1, characterized in that the bottom of the phalangeal prosthesis (10) is provided with a second porous structure layer (13).

9. The phalangeal prosthesis structure according to claim 8, characterized in that the pore size of the second porous structure layer (13) is between 600 and 1000 microns, the porosity of the second porous structure layer (13) is between 50 and 80%.

10. The phalangeal prosthesis structure according to claim 1, characterized in that the implantation plateau (20) comprises a quadrangular plateau (21).