CN219354284U

CN219354284U - Radius prosthesis assembly

Info

Publication number: CN219354284U
Application number: CN202320292072.2U
Authority: CN
Inventors: 黄有军; 孙延东
Original assignee: Suzhou Weichuang Touched Funeng Medical Technology Co ltd
Current assignee: Suzhou Weichuang Touched Funeng Medical Technology Co ltd
Priority date: 2023-02-23
Filing date: 2023-02-23
Publication date: 2023-07-18
Anticipated expiration: 2033-02-23

Abstract

The present utility model provides a radius prosthesis assembly comprising: a head component and a handle component; the head piece having a concave surface disposed along a first axis, the concave surface for fitting a first target object; the handle component has a second axis and is configured to be disposed on a second target object along a direction of the second axis, the first axis being parallel to the second axis; wherein the head part is movably connected with the handle part relative to the handle part on a transverse plane perpendicular to the second axis to adjust the distance between the first axis and the second axis. So configured, the head member is movable relative to the handle member in a lateral plane perpendicular to the second axis, enabling a better biomimetic design and a better adaptation to the first target object and the second target object.

Description

Radius prosthesis assembly

Technical Field

The utility model relates to the field of medical equipment, in particular to a radius prosthesis component

Background

The elbow joint is one of the complex joints of the human body, and the humeral and the ulnar joints and the radioulnar joints cooperate to complete elbow joint movement. As a common adult elbow joint injury, the radius small-head fracture accounts for about 30% of all elbow joint fractures. For the treatment of severe comminuted fracture of the small radius head, no satisfactory prognosis effect can be obtained, whether by internal fixation of the steel plate or by radial resection. Thus, prosthetic replacement is the best option to maintain elbow joint stability after radius head resection. The research shows that most of the radius head concave surface is elliptical, the annular joint surface is also an irregular free curved surface, and the center of the curved surface and the axis of the radius neck have eccentric distances, so that the movement of the upper ulnar joint during normal forearm rotation is similar to a cam movement track. There is a difference in eccentricity from individual to individual.

Currently, the radial prostheses in the market are divided into two types, one type is a non-eccentric prosthesis and the other type is a fixed-eccentricity prosthesis. Wherein, the non-eccentric prosthesis adopts non-bionic design, and the movement track of the radius head prosthesis is different from the movement track of the normal radius head; fixed eccentricity prostheses do not match all patients well due to differences in individual eccentricities.

Disclosure of Invention

The utility model aims to provide a radius prosthesis component which solves the problems that the existing radius prosthesis has a difference with the normal radius head movement track and cannot be matched with all patients.

To achieve the above object, the present utility model provides a radius prosthesis assembly comprising: a head component and a handle component;

the head piece having a concave surface disposed along a first axis, the concave surface for fitting a first target object; the handle component has a second axis and is configured to be disposed at a second target object along a direction of the second axis;

wherein the head member is movably connected with the handle member relative to the handle member to adjust the spacing of the first axis from the second axis.

Optionally, the head part is movable relative to the handle part in a transverse plane perpendicular to the second axis.

Optionally, the first axis is parallel to the second axis.

Optionally, the handle part comprises a connector, the head part comprises a connecting hole matched with the connector, the connector has a third axis, the third axis is parallel to the second axis, and the axis of the connecting hole is parallel to the first axis; the head part is sleeved on the connecting body through the connecting hole and is rotatable relative to the connecting body around the third axis so as to adjust the distance between the first axis and the second axis.

Optionally, the connector is in a cylinder shape or a truncated cone shape.

Optionally, the handle part includes a connecting body, the head part has a connecting groove, the connecting groove is opened along the direction perpendicular to the first axis, the connecting body is movably arranged in the connecting groove along the extending direction of the connecting groove, so as to adjust the distance between the first axis and the second axis.

Optionally, the connector has a first connecting portion protruding in a direction perpendicular to the first axis, the connecting groove has a second connecting portion recessed in a direction perpendicular to the first axis, and the first connecting portion is engaged with the second connecting portion to limit radial displacement and circumferential displacement between the head part and the handle part.

Optionally, the radial prosthesis assembly further comprises a locking member, the connector and the head part have a through hole opened in an axial direction perpendicular to the first connector, and the through hole is used for the locking member to pass through so as to limit axial displacement between the head part and the handle part.

Optionally, the handle component comprises a handle body extending along the second axis.

Optionally, the handle part further comprises a connection table and a connection body, and the connection body is connected with the handle body through the connection table.

In summary, in the radial prosthesis assembly provided by the present utility model, it includes: a head component and a handle component; the head piece having a concave surface disposed along a first axis, the concave surface for fitting a first target object; the handle component has a second axis and is configured to be disposed on a second target object along a direction of the second axis, the first axis being parallel to the second axis; wherein the head part is movably connected with the handle part relative to the handle part on a transverse plane perpendicular to the second axis to adjust the distance between the first axis and the second axis.

So configured, the head component is movable relative to the handle component on a transverse plane perpendicular to the second axis, and compared with the existing eccentric-free radial prosthesis and fixed eccentric radial prosthesis, the radial prosthesis provided by the utility model can match eccentricities between different first target objects and second target objects to provide a better bionic design, is free from variation from a normal radial movement track, and further improves the practicability of the radial prosthesis.

Drawings

FIG. 1 is a schematic view of a radial prosthesis assembly according to an embodiment of the present utility model;

FIG. 2 is a schematic illustration of a handle assembly according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a head unit according to an embodiment of the present utility model;

FIG. 4 is a cross-sectional view of a head unit according to an embodiment of the present utility model;

FIG. 5 is a schematic view of another radial prosthesis assembly provided in accordance with an embodiment of the present utility model;

FIG. 6 is a side view of another radial prosthesis assembly provided in accordance with an embodiment of the present utility model;

FIG. 7 is a schematic view of another handle component provided in accordance with an embodiment of the present utility model;

FIG. 8 is a side view of another handle component provided in accordance with an embodiment of the present utility model;

FIG. 9 is a top view of another handle component provided by an embodiment of the present utility model;

FIG. 10 is a schematic view of another head unit provided in accordance with an embodiment of the present utility model;

FIG. 11 is a bottom view of another head component provided in accordance with an embodiment of the present utility model;

fig. 12 is a schematic view of a connector according to an embodiment of the present utility model.

Wherein, the explanation of each reference sign is as follows:

1-a head part; 2-a handle part; 3-a first axis; 4-a second axis; 5-a third axis; 6-fourth axis; 7-locking member; 11-connecting holes; 12-concave; 13-connecting grooves; a 21-linker; 22-handle body; 23-connecting the tables; 131-a second connection; 211-a first connection; 212-vias.

Detailed Description

The utility model will be described in further detail with reference to the drawings and the specific embodiments thereof in order to make the objects, advantages and features of the utility model more apparent. It should be noted that the drawings are in a very simplified form and are not drawn to scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model. Furthermore, the structures shown in the drawings are often part of actual structures. In particular, the drawings are shown with different emphasis instead being placed upon illustrating the various embodiments.

As used in this specification, the singular forms "a," "an," and "the" include plural referents, the term "or" is generally used in the sense of comprising "and/or" and the term "several" is generally used in the sense of comprising "at least one," the term "at least two" is generally used in the sense of comprising "two or more," and the term "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance or number of technical features indicated. Thus, a feature defining "first," "second," "third," or "third" may explicitly or implicitly include one or at least two such features, with "one end" and "another end" and "proximal end" and "distal end" generally referring to the respective two portions, including not only the endpoints, but also the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, e.g., as being either a fixed connection, a removable connection, or as being integral therewith; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. Furthermore, as used in this specification, an element disposed on another element generally only means that there is a connection, coupling, cooperation or transmission between the two elements, and the connection, coupling, cooperation or transmission between the two elements may be direct or indirect through intermediate elements, and should not be construed as indicating or implying any spatial positional relationship between the two elements, i.e., an element may be in any orientation, such as inside, outside, above, below or on one side of the other element unless the context clearly indicates otherwise. The terms "upper", "lower", "top" and "bottom" are generally relative positional relationships arranged in the direction of gravity; the term "vertical, vertical direction" generally refers to a direction along the force of gravity that is generally perpendicular to the ground, and "horizontal, horizontal direction" generally refers to a direction parallel to the ground; the specific meaning of the above terms in this specification will be understood by those of ordinary skill in the art in view of the specific circumstances.

The following description refers to the accompanying drawings.

The present utility model provides a radius prosthesis assembly comprising: a head part 1 and a handle part 2; the head part 1 has a concave surface 12 arranged along the first axis 3, the concave surface 12 being adapted to the first target object; the handle part 2 has a second axis 4 and is intended to be arranged in the direction of the second axis 4 to a second target object, the first axis 3 being parallel to the second axis 4; wherein the head part 1 is movably connected with the handle part 2 relative to the handle part 2 on a transverse plane perpendicular to the second axis 4 for adjusting the distance of the first axis 3 from the second axis 4. As a preferred embodiment, the first axis 3 is spaced from the second axis 4 by no more than 5mm. The first target object and the second target object may be a radius head of a human body, and the application is treatment, but the application is not limited to the radius head of the human body, and may be an object without vital signs such as a radius head model, and the application may be exercise, calibration, test, and the like. In the example shown in fig. 1 and 5, the distance L1 between the first axis 3 and the second axis 4 is 0 to 5mm, the radius of curvature of the concave surface 12 is 10 to 40mm, and the depth thereof in the direction of the first axis 3 is 0.5 to 3mm; the first axis 3 and the second axis 4 are both straight and are disposed along the axial direction of the head part 1 and the handle part 2 (up and down direction in fig. 1 and 5), respectively, however, in other embodiments, the first axis 3 and the second axis 4 may be disposed along the radial direction or other directions of the head part 1 and the handle part 2, respectively, or the first axis 3 and the second axis 4 may be folded sections, and the distance L1 between the first axis 3 and the second axis 4 may be other reasonable values, which may be configured by those skilled in the art according to practical situations, which is not limited to this disclosure. So configured, the head part 1 is movable relative to the handle part 2 on a lateral plane perpendicular to the second axis 4, and compared with the eccentric-free radial prosthesis and the fixed eccentric radial prosthesis in the prior art, the radial prosthesis assembly provided in this embodiment can adjust the eccentricities of the head part 1 and the handle part 2 in real time according to the difference of the eccentricities between the first target object and the second target object, so as to provide a more accurate bionic design, fully restore the movement track of the radius, and satisfy different requirements.

Referring to fig. 2 to 4, the handle part 2 comprises a connecting body 21, the head part 1 comprises a connecting hole 11 adapted to the connecting body 21, the connecting body 21 has a third axis 5, the third axis 5 is parallel to the second axis 4, and the axis of the connecting hole 11 is parallel to the first axis 3; the head part 1 is sleeved on the connecting body 21 through the connecting hole 11, and the head part 1 can rotate relative to the connecting body 21 around the third axis 5 so as to adjust the distance between the first axis 3 and the second axis 4. The axis of the connection hole 11 is the fourth axis 6, and preferably, the distance L3 between the first axis 3 and the fourth axis 6 is 0 to 2.5mm. In use, the head part 1 is sleeved on the connecting body 21 through the connecting hole 11 and further connected with the handle part 2, when the distance between the head part 1 and the handle part 2 needs to be adjusted, the head part 1 is rotated around the third axis 5 so as to adjust the distance between the first axis 3 and the second axis 4, however, in other embodiments, the distance between the first axis 3 and the second axis 4 can be adjusted in other ways, the distance L3 between the first axis 3 and the fourth axis 6 can be other reasonable values, and a person skilled in the art can configure the distance according to practical situations, which is not limited by the utility model.

As an alternative embodiment, the second axis 4 is spaced from the third axis 5 by no more than 2.5mm. In the example shown in fig. 2, the distance L2 between the second axis 4 and the third axis 5 is 0 to 2.5mm. In other alternative embodiments, the distance between the second axis 4 and the third axis 5 may be other reasonable values, and those skilled in the art may configure the distance L2 between the second axis 4 and the third axis 5 according to the size and the eccentricity of the bone joint, which is not limited by the present utility model.

In some alternative embodiments, the connector 21 is in the shape of a cylinder or a truncated cone. In the example shown in fig. 2 to 4, the connecting body 21 has a truncated cone shape, which tapers in the direction approaching the head part 1. Of course, in alternative embodiments, the connecting body 21 may also taper away from the head part 1, or be a member of a different shape, such as a prism, a prismatic table, etc., which may be configured by those skilled in the art according to the actual circumstances.

Referring to fig. 5 to 12, the handle part 2 includes a connecting body 21, the head part 1 has a connecting groove 13, the connecting groove 13 is opened along a direction perpendicular to the first axis 3, and the connecting body 21 is movably disposed in the connecting groove 13 along an extending direction of the connecting groove 13 so as to adjust a distance between the first axis 3 and the second axis 4. In the example shown in fig. 11, one end of the connecting groove 13 is opened in the radial direction of the head member 1, and the connecting body 21 is penetrated in the connecting groove 13 in the radial direction of the head member 1 and movable in the connecting groove 13 to adjust the distance between the first axis 3 and the second axis 4. In alternative embodiments, the connecting groove 13 may be located in the middle of the head part 1 or provided in sections on the head part 1, the connecting body 21 being selectively connected to the connecting groove 13 as desired.

Further, the connecting body 21 has a first connecting portion 211 protruding outwardly in a direction perpendicular to the first axis 3, the connecting groove 13 has a second connecting portion 131 recessed inwardly in a direction perpendicular to the first axis 3, and the first connecting portion 211 is engaged with the second connecting portion 131 to limit radial displacement and circumferential displacement between the head member 1 and the handle member 2. It should be noted that, in the examples shown in fig. 7 and 11, the connecting body 21 is a cuboid, the connecting body 21 has two first connecting surfaces, the two first connecting surfaces are disposed opposite to each other, the first connecting portions 211 are uniformly disposed on the two first connecting surfaces, correspondingly, the connecting grooves 13 are uniformly distributed with the second connecting portions 131 on the surfaces corresponding to the first connecting surfaces, the first connecting portions 211 are engaged with the second connecting portions 131 to limit the radial displacement and the circumferential displacement between the head part 1 and the handle part 2, and of course, in other alternative examples, the connecting body 21 may also be connected with the connecting grooves 13 through a magnetic attraction device or other members having the same function, which may be configured by those skilled in the art according to practical situations.

Referring to fig. 11 to 12, the radial prosthesis assembly further comprises a locking member 7, the connecting body 21 and the head member 1 have a through hole 212 formed along an axial direction perpendicular to the first connecting portion 211, and the through hole 212 is used for the locking member 7 to pass through so as to limit the axial displacement between the head member 1 and the handle member 2. As an alternative embodiment, in the example shown in fig. 11 and 12, the locking element 7 is a cylindrical bolt with threads, the through hole 212 is formed on the second connecting surface perpendicular to the first connecting surface and the head part 1 corresponding to the first connecting surface, the through hole 212 is provided with threads matching with the locking element 7, the locking element 7 is penetrated in the through hole 212 and used for limiting the axial displacement between the head part 1 and the handle part 2, and in other embodiments, the locking element 7 can also be a component with magnetism, and the utility model is not limited to this.

Referring to fig. 2 and 7, the handle member 2 includes a handle 22, the handle 22 extending along the second axis 4. In the example shown in fig. 2 and 7, the shank 22 is a cylinder with a taper angle, which narrows gradually in a direction away from the connecting body 21, and the taper angle ranges from 0 ° to 5 °, which improves the safety of the radial prosthesis assembly; at the same time, the surface of the shank 22 has a coating or frosted layer that extends the useful life of the radial prosthesis assembly.

Further, the handle part 2 further comprises a connection table 23 and a connection body 21, wherein the connection body 21 is connected with the handle body 22 through the connection table 23. In the example shown in fig. 2 and 7, the connecting stage 23 is a cylinder with a diameter of 14mm to 20mm and a thickness in the direction of the first axis 3 of not more than 6mm. In other alternative embodiments, the connection stage 23 may be a truncated cone, a sphere, or other shaped member, which may be configured by those skilled in the art according to the actual situation.

In summary, in a radial prosthesis assembly provided by an embodiment of the present utility model, it includes: a head component and a handle component; the head piece having a concave surface disposed along a first axis, the concave surface for fitting a first target object; the handle component has a second axis and is configured to be disposed on a second target object along a direction of the second axis, the first axis being parallel to the second axis; wherein the head part is movably connected with the handle part relative to the handle part on a transverse plane perpendicular to the second axis to adjust the distance between the first axis and the second axis.

The above description is only illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.

Claims

1. A radial prosthesis assembly, comprising: a head component and a handle component;

2. The radius prosthesis assembly of claim 1, wherein the head component is movable relative to the stem component in a lateral plane perpendicular to the second axis.

3. The radial prosthesis assembly of claim 1, wherein the first axis is parallel to the second axis.

4. The radius prosthesis assembly of claim 1, wherein the stem component comprises a connector, the head component comprising a connection bore adapted to the connector, the connector having a third axis, the third axis being disposed parallel to the second axis, the connection bore axis being parallel to the first axis; the head part is connected to the connector through the connecting hole, and the head part is rotatable relative to the connector around the third axis to adjust the distance between the first axis and the second axis.

5. The radius prosthesis assembly of claim 4, wherein the connector is cylindrical or frustoconical.

6. The radial prosthesis assembly of claim 1, wherein the handle member comprises a connector, the head member having a connecting slot, the connecting slot opening in a direction perpendicular to the first axis, the connector being movably disposed in the connecting slot along an extension of the connecting slot to adjust a spacing of the first axis from the second axis.

7. The radial prosthesis assembly of claim 6, wherein the connector has a first connector portion that is convex in a direction perpendicular to the first axis, and the connector slot has a second connector portion that is concave in a direction perpendicular to the first axis, the first connector portion and the second connector portion snap together to limit radial and circumferential displacement between the head component and the handle component.

8. The radial prosthesis assembly of claim 7, further comprising a locking element, wherein the connector and the head component have a throughbore opening in an axial direction perpendicular to the first connector, the throughbore for the locking element to pass through to limit axial displacement between the head component and the handle component.

9. The radius prosthesis assembly of claim 1, wherein the handle component comprises a handle body extending along the second axis.

10. The radius prosthesis assembly of claim 9, wherein the handle assembly further comprises a connection block and a connector, the connector being coupled to the handle body via the connection block.