CN213958383U

CN213958383U - Hip joint teaching aid

Info

Publication number: CN213958383U
Application number: CN202022697113.5U
Authority: CN
Inventors: 李书纲
Original assignee: Beijing Hehua Ruibo Technology Co ltd; Beijing And Huaruibo Medical Technology Co ltd
Current assignee: Beijing And Huaruibo Medical Technology Co ltd; Beijing Horibo Technology Co.,Ltd.
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-08-13
Anticipated expiration: 2030-11-19

Abstract

The utility model provides a hip joint teaching aid belongs to skeleton model teaching aid technical field. Wherein, hip joint teaching aid includes: the base and at least one femoral head connecting assembly, wherein, be provided with at least one depressed part on the base, femoral head connecting assembly's first end is provided with the bulge, the bulge sets up correspondingly in the depressed part, femoral head connecting assembly's second end is provided with the holding portion, the holding portion is used for being connected with the femoral head is movable. The utility model provides a be provided with the depressed part on hip joint teaching aid's the base, femoral head coupling assembling's first end is provided with the bulge, before both are fixed, the bulge can be in the depressed part free rotation, and then adjusts the angle of femoral head coupling assembling second end holding portion, is convenient for simulate the acetabulum that has different anteverters and abduction angle. Furthermore, the second end of the femoral head connection assembly is provided with a receptacle through which a movable connection with the femoral head is achieved.

Description

Hip joint teaching aid

Technical Field

The utility model belongs to the technical field of skeleton model teaching aid, concretely relates to hip joint teaching aid.

Background

In the field of orthopedics, joint skeleton models, animal bones or human bones are often required for teaching and experiments to demonstrate or simulate operations. For example, in a study involving knee replacement surgery, it is often necessary to simulate the knee joint in the surgical scene, to connect the femur and tibia to each other in a movable connection, and to tie one end of the femoral head to a fixed frame, and not to fasten it, but to maintain a certain mobility of the femoral head to simulate the mobility of the hip joint. However, the femur and tibia may be plastic models, animal bones, and human bones, and vary in size and shape. Therefore, the prior art cannot simulate the relationship between the actual femur and the acetabulum, and cannot adjust the angle according to the actual condition to simulate the acetabulum with different anteversion angles and abduction angles, so that a new hip joint teaching aid needs to be developed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving at least one of the technical problems existing in the prior art and provides a hip joint teaching aid.

The utility model provides a hip joint teaching aid, include:

the base is provided with at least one sunken part;

the first end of the femoral head connecting assembly is provided with a protruding part which is arranged in the corresponding recess, and the second end of the femoral head connecting assembly is provided with a containing part which is used for being movably connected with a femoral head.

Optionally, one side of the accommodating part, which faces away from the protruding part, is provided with a concave groove.

Optionally, the accommodating part adopts a ball socket.

Optionally, the femoral head connection assembly further comprises at least one first spacing coupler disposed on the receptacle.

Optionally, one side of the protruding portion facing the recessed portion is an arc surface.

Optionally, the protrusion is a ball socket.

Optionally, the recessed portion is a spherical recessed portion, and the size of the spherical recessed portion matches with the size of the arc surface.

Optionally, the protruding portion is provided with at least one mounting through hole.

Optionally, the number of the concave parts is two, and the two concave parts are symmetrically distributed on the base; and the number of the first and second groups,

the number of the femoral head connecting components is two, and each femoral head connecting component corresponds to one recess.

Optionally, the base is further provided with at least one fixing through hole.

The utility model provides a be provided with the depressed part on hip joint teaching aid's the base, femoral head coupling assembling's first end is provided with the bulge, and before fixing the bulge in the depressed part, the bulge can be in the depressed part free rotation to angle between femoral head coupling assembling and the second end holding portion is so that the simulation of being convenient for has the acetabulum of different antevertexes and abduction angle. In addition, the second end of the femoral head connecting component is provided with the accommodating part, and the accommodating part is movably connected with the femoral head, so that the structure and the action of the hip joint can be conveniently simulated.

Drawings

Fig. 1 is a schematic structural view of a hip joint teaching aid according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a base in a hip joint teaching aid according to another embodiment of the present invention;

fig. 3 is a schematic structural view of a femoral head connecting assembly in a hip joint teaching aid according to another embodiment of the present invention;

fig. 4 is a schematic structural view of a femoral head connecting assembly in a hip joint teaching aid according to another embodiment of the present invention;

fig. 5 is a schematic view of an application structure of a hip joint teaching aid according to another embodiment of the present invention.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Unless otherwise specifically stated, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the present invention belongs. As used in this application, the terms "comprises" or "comprising," or the like, do not specify the presence of stated shapes, numbers, steps, acts, operations, elements, components, and/or groups thereof, nor do they preclude the presence or addition of one or more other different shapes, numbers, steps, acts, operations, elements, components, and/or groups thereof. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number and order of the indicated features.

In some descriptions of the present invention, unless expressly stated or limited otherwise, the terms "mounted," "connected," or "fixed" and the like are not intended to be limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect through an intermediate medium, communication between two elements, or interaction between two elements. Also, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate an orientation or positional relationship based on that shown in the drawings, and are used only to indicate a relative positional relationship, which may also be changed accordingly when the absolute position of the object being described is changed.

As shown in fig. 1 to 4, the present invention provides a hip joint teaching aid 100, including: the base 110 and the at least one femoral head connecting assembly 120, wherein the base 110 is provided with at least one recess 111, a first end of the femoral head connecting assembly 120 is provided with a protrusion arranged in the corresponding recess 111, and a second end of the femoral head connecting assembly 120 is provided with a receptacle for movable connection with a femoral head.

For example, as shown in fig. 1 to 4, in the present embodiment, a recess 111 is provided on the base 110, and correspondingly, a protrusion 121 is provided at the first end of the femoral head connecting assembly 120, before the protrusion 121 is fixed in the recess 111, the protrusion 121 can rotate freely in the recess 111, and the accommodating portion 122 at the second end of the femoral head connecting assembly of the present embodiment can be adjusted to a proper angle according to actual needs. That is to say, through the bulge free rotation in the depressed part, adjust the portion of accomodating to preset angle earlier, later, with bulge and this depressed part fixed connection again, like this, be convenient for simulate the acetabular bone that has different anteversion angles and abduction angle. The position of the receptacle 122 at the second end of the femoral head connection assembly 120 relative to the base 110 remains unchanged, and as shown in fig. 5, the receptacle 122 is movably coupled to the femoral head 210 of the femoral mold 200.

It should be noted that, in this embodiment, the number of the femoral head connecting assemblies is not specifically limited, and the number may be set according to actual needs, for example, one femoral head connecting assembly is disposed on one side of the base, or two femoral head connecting assemblies are respectively disposed on two sides of the base, and are used for simulating femoral heads connecting two femurs of the left and right femurs of the human body.

Specifically, in order to simulate the human skeleton, the base of the present embodiment is shaped like a pelvis to simulate the pelvis of a human lying posture, and as shown in fig. 1 and 2, the base 110 includes a bottom surface, a top surface, and side surfaces respectively connecting the bottom surface and the top surface, the side surfaces are inclined from the top surface to the bottom surface, and the recess 111 is disposed on the side surfaces so that the direction of the pair of openings of the recess is substantially inclined upward and outward. Furthermore, two recesses 111 are symmetrically disposed on the base 110, and accordingly, the hip joint teaching aid 100 of this example includes two femoral head connecting components 120, and each femoral head connecting component 120 corresponds to one recess 111. That is, the first femoral head connection assembly is disposed in the first recess and the second femoral head connection assembly is disposed in the second recess, and the first and second femoral head connection assemblies are for connecting femoral heads of the left and right femurs, respectively.

In the present embodiment, the shape of the receiving portion is not particularly limited, and the receiving portion can receive the femoral head and form a movable connection with the femoral head, for example, a concave groove is provided on a side of the receiving portion away from the protrusion, and the femoral head is received in the concave groove to form a movable connection.

Specifically, in this embodiment, in order to simulate the acetabulum, as shown in fig. 1 to 4, in some embodiments, the receptacle 122 of the second end of the femoral head connecting assembly is a ball socket, such that the ball socket 122 forms a movable connection with the femoral head 210 (see fig. 5). It will be appreciated that since the socket has a socket interior cavity, corresponding to a recessed slot, for receiving a portion of the femoral head, the femoral head is movable within the socket.

Further, to constrain the femoral head within a range of motion, in other embodiments, as shown in fig. 1-4, the femoral head connection assembly 120 further comprises at least one first spacing link 124, the at least one first spacing link 124 being disposed on a peripheral wall of the socket 122. That is, in some embodiments, only one first spacing link may be provided, or two or more first spacing links may be provided, and the two or more first spacing links are equally spaced along the peripheral wall of the socket. As shown in fig. 5, the first spacing connector 124 is used to cooperate with the femoral head 210 or the second spacing connector 230 on the femoral head 210 to limit the movable range of the femoral head in the ball socket, and the femoral head keeps a ball-joint state with the ball socket when moving, which is closer to the actual relationship between the femur and the acetabulum.

It should be noted that, in the present embodiment, the type, shape and number of the first limit connectors are not particularly limited, and for example, as shown in fig. 1 to 4, the first limit connectors 124 may be engaging lugs, and the engaging lugs are rectangular ring bodies, and the ring bodies are provided with central holes. Accordingly, as shown in fig. 5, the second spacing coupler 230 may be a coupling hole, for example, a second spacing coupler 230 (coupling hole) may be provided at the femoral neck 220 or other portion coupled to the femoral head 210, and the femoral head may be spaced by a binding member inserted through the coupling lug and the coupling hole. Alternatively, in other embodiments, the first spacing connector may also be a hook. Of course, it is obvious to those skilled in the art that other types of first limit connectors may be provided as long as the structure for attaching the rope belt is available.

It should be further noted that, the shape of the protruding portion is not specifically limited in this embodiment, and the protruding portion is only required to be correspondingly disposed in the recessed portion, and the protruding portion can freely rotate in the recessed portion before the protruding portion and the recessed portion are fixed, and of course, in order to better cooperate with the recessed portion to rotate, the protruding portion of this embodiment may be disposed in a curved surface structure on a side facing the recessed portion.

Specifically, in order to facilitate the adjustment of the angle of the femoral head connecting component in the base, in some embodiments, as shown in fig. 2 and 4, the protrusion 121 is a ball socket, such that the ball socket 121 is disposed in the recess 111, the recess 111 is a spherical recess, and one side of the ball socket 121 facing the recess is an arc 121a, i.e., the ball socket corresponds to a seat body having an arc bottom surface, and the arc 121a and the spherical recess can rotate concentrically to adjust the angular orientation of the ball socket.

Further, the size of the spherical recess 111 in this embodiment is matched with the size of the arc 121a, for example, in some embodiments, when the spherical recess and the arc are both circular, the diameters of the spherical recess and the arc may be equal. Therefore, the angle between the femoral head connecting component and the base can be adjusted at will by spherical contact between the femoral head connecting component and the base, and acetabulum with different anteversion angles and abduction angles can be simulated conveniently.

It should be understood that before the femoral head connecting component is fixedly connected with the concave part of the base, the cambered surface of the socket seat and the concave part of the base can freely slide on the premise of keeping concentricity so as to adjust the socket to a proper angular orientation, and in the adjusting process, the position of the center of the socket relative to the base is not changed, but the opening direction of the socket is changed, so that the opening direction of the socket can be adjusted according to actual requirements.

Alternatively, as shown in fig. 1 to 4, at least one mounting through hole 125 is provided on the socket 121 to fix the socket 121 in the recess 111 by a mounting member inserted into the mounting through hole 125 after the ball 122 is adjusted to a predetermined angle. That is, when the ball is adjusted to the proper angle, the ball can be mounted in the spherical recess of the base by the mounting member.

It should be noted that the fixing manner between the ball socket and the recess is not particularly limited, and in some embodiments, the mounting through hole may be provided as described above, and the mounting through hole is fixed by an installation component (for example, a self-tapping screw or other fastener) penetrating through the mounting through hole, and it should be understood that the mounting through hole is provided along the thickness direction of the ball socket. In other embodiments, the locking device can be locked and fixed through a locking slot, and for those skilled in the art, the locking device can be specifically configured according to actual needs. Of course, the femoral head connection assembly can also be detached from the base for subsequent use after a corresponding operation is performed.

Further, as shown in fig. 1-4, in other embodiments, the femoral head connection assembly 120 further includes a support connector 123, the support connector 123 being positioned between the protrusion 121 and the receptacle 122. That is, the femoral head connection assembly 120 includes a protrusion (e.g., a ball socket) 121, a receptacle (e.g., a ball socket) 122, and a bracing link 123 by which the protrusion and receptacle are respectively connected.

Based on above-mentioned structure, when using the hip joint teaching aid of this example, can adjust the opening direction of ball socket according to actual need earlier, adjust the back, use self-tapping screw with the fastening of ball socket seat in the sphere depressed part. Then, the femoral head part of the femoral model, the animal bone or the human bone is put into the ball socket, the femoral neck or other parts are provided with connecting holes, and then binding pieces (such as ropes or binding bands) are passed through the connecting holes and then are bound on the connecting lugs of the ball socket. Therefore, the limit capacity of the rope or the binding belt is limited, the femoral head can still move in the ball socket but cannot fall out, and the femoral head still keeps a ball-hinged state with the ball socket when moving, so that the relationship between the actual femur and the acetabulum is closer. Of course, the rope or the binding band can be wound on the femoral neck or the femoral shaft, and the other two ends of the rope or the binding band are connected to the connecting lugs of the ball sockets and can also play a role like ligaments.

The hip joint teaching aid of the embodiment can enable bones or models with different sizes to be simply connected into a ball socket to form a ball socket joint, and is simple and practical in structure.

It should be noted that, in order to facilitate performing the corresponding experiment operation, the base of the present embodiment may also be fixed on an operation platform (e.g., a test bench), for example, as shown in fig. 1 and fig. 2, in some embodiments, the base 110 is further provided with at least one fixing through hole 112, so as to fix the base 110 on the operation platform by a fixing member penetrating through the fixing through hole 112.

It should be further noted that, in this embodiment, the number, shape and arrangement position of the fixing through holes are not specifically limited, the fixing through holes may be arranged along the length direction of the base, or along the width direction of the base, and the fixing through holes may be arranged in a circular shape, or in an oval shape, or in a quadrilateral shape, or the like, and may be specifically arranged according to actual needs.

Illustratively, as shown in fig. 1 and 2, the bottom surface of the base 110 is symmetrically provided with two circular fixing through holes 112 along the length direction thereof, and the bottom surface of the base 110 is provided with one oval fixing through hole 112 along the width direction thereof, and it is also possible to provide one oval fixing through hole 112 at a middle position of two recesses 111 on the side surface of the base 110 to fix the base on the test bed by fixing members (e.g., rope bands) inserted through the fixing through holes.

The utility model provides a hip joint teaching aid, for prior art, the utility model provides a hip joint teaching aid includes base and femoral head coupling assembling, wherein for the sphere contact between base and the femoral head coupling assembling, angle between the two can be adjusted wantonly, the simulation of being convenient for has the acetabulum of different anteverters and abduction angle. And, the utility model discloses a femoral head coupling assembling's second end still is provided with the ball socket of being connected with the femoral head is movable, nevertheless can not fall out through first spacing connecting piece makes the femoral head in the activity of ball socket, and still keep the ball joint state with this femoral head coupling assembling during the femoral head activity, more be close to the relation of actual thighbone and acetabular bone, not equidimension type's skeleton or model can all be connected to formation ball socket joint in the ball socket portably, simple structure is practical, can simulate real human femoral head home range, this has important meaning to teaching and experimentation.

It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims

1. A hip teaching aid, comprising:

the base is provided with at least one sunken part;

2. A hip teaching aid as claimed in claim 1, wherein the receptacle is provided with a recess on the side facing away from the projection.

3. A hip teaching aid as claimed in claim 2, wherein the receptacles are sockets.

4. A hip teaching aid as claimed in claim 3, wherein the femoral head connection assembly further comprises at least one first limit connector provided on the receptacle.

5. A hip teaching aid as claimed in any of claims 1 to 4, wherein the side of the projection facing the recess is curved.

6. A hip teaching aid as claimed in claim 5, wherein the projections are ball sockets.

7. The hip teaching aid of claim 6, wherein the recess is a spherical recess having a size matching the size of the arc.

8. A hip teaching aid as claimed in any of claims 1 to 4, wherein the projection is provided with at least one mounting through-hole.

9. The hip joint teaching aid according to any one of claims 1 to 4, wherein the number of the depressions is two, and the two depressions are symmetrically distributed on the base; and the number of the first and second groups,

10. A hip joint teaching aid as claimed in any of claims 1 to 4, wherein the base is further provided with at least one fixing through hole.