CN214104761U

CN214104761U - Umbrella-shaped structure ball head

Info

Publication number: CN214104761U
Application number: CN202022145408.1U
Authority: CN
Inventors: 张颖涛
Original assignee: Beijing Zhong An Tai Hua Science & Technology Co ltd
Current assignee: Beijing Zhong An Tai Hua Science & Technology Co ltd
Priority date: 2020-09-26
Filing date: 2020-09-26
Publication date: 2021-09-03
Anticipated expiration: 2030-09-26

Abstract

The utility model relates to an umbrella-shaped structure ball head, which comprises a segment-shaped ball head body, wherein the bottom surface of the ball head body is a ball end surface, the center of the ball end surface is provided with an insertion hole, the ball head body is divided into a ball shell, a filling part and an insertion column, the insertion hole is arranged on the end surface of the insertion column, the insertion column is arranged in the ball shell in a penetrating way, and the filling part is filled between the insertion column and the ball shell; the hollow-out groove has been seted up on the packing portion, and the packing portion includes the filling block, and the filling block simultaneously with spherical shell inside wall and insert post lateral surface fixed connection. The artificial hip joint has the advantages that the burden of soft tissues and other bones of a patient is reduced, and the patient is not prone to feel uncomfortable due to the fact that the ball head body is too heavy when the artificial hip joint is used.

Description

Umbrella-shaped structure ball head

Technical Field

The application relates to the field of artificial joints, in particular to an umbrella-shaped structure ball head.

Background

The artificial hip joint consists of an acetabulum and a femoral ball head, and normal movement of the human hip joint is realized through the rotation of the ball head in the acetabulum. When the hip joint of a person suffers from pathological changes, such as chondropathy or fracture of a femoral neck stem, and the hip joint cannot normally function, the hip joint needs to be visualized, namely, an artificial hip joint is placed through an orthopedic surgery, which is the most common surgical treatment method at present.

The existing ball head comprises a ball body, and a small part of the ball body is cut off to form a segment shape. An insertion hole for inserting the bone handle is arranged at the center of the end surface of the ball body. The material of the ball body is usually cobalt chromium molybdenum or ceramic material, and the density of the material per se is much higher than that of the bone.

In view of the above-mentioned related art, the inventor believes that the current product will increase the burden on the soft tissue and the rest of the bone of the patient during clinical use, and further cause the patient to feel discomfort when using the artificial hip joint.

SUMMERY OF THE UTILITY MODEL

In order to improve the phenomenon that a patient feels uncomfortable when an artificial hip joint is used, the application provides the umbrella-shaped structure ball head.

The application provides an umbrella structure bulb adopts following technical scheme:

an umbrella-shaped structure ball head comprises a segment-shaped ball head body, wherein the bottom surface of the ball head body is a ball end surface, an insertion hole is formed in the center of the ball end surface, the ball head body is divided into a ball shell, a filling part and an insertion column, the insertion hole is formed in the end surface of the insertion column, the insertion column penetrates through the ball shell, and the filling part is filled between the insertion column and the ball shell; the hollow-out groove has been seted up on the packing portion, and the packing portion includes the filling block, and the filling block simultaneously with spherical shell inside wall and insert post lateral surface fixed connection.

Through adopting above-mentioned technical scheme, seted up the fretwork groove on the filling portion of bulb body, effectively alleviateed the weight of bulb body. And the shape of the spherical shell in the ball head body is not changed, so that the spherical shell can still be stably embedded into the mortar cup and can not freely rotate in the mortar cup. The shape of the insertion column in the ball head body is not changed, so that the bone handle can be normally inserted into the insertion hole. The packing part is by the fretwork back, and remaining part is the filling block, and the filling block can couple together spherical shell inside wall with insert the post, inserts the difficult unsettled phenomenon that appears of post, can support the spherical shell. The burden of the soft tissue and other bones of the patient is reduced, and the patient is not easy to feel uncomfortable due to the overweight of the ball head body when using the artificial hip joint.

Optionally, one end of the insertion column is fixedly connected with the inner side surface of the spherical shell.

Through adopting above-mentioned technical scheme, insert post and spherical shell fixed connection, can make insert post and spherical shell structure more stable.

Optionally, the filling part includes at least two filling blocks, the filling blocks are circumferentially arranged along the outer side surface of the insertion column, and the distance between two adjacent filling blocks is equal.

Through adopting above-mentioned technical scheme, the filling block is provided with a plurality ofly, and the equidistant setting of filling block, and stress conduction dispersion and even. The size of the gap between the filling parts is equal, the elastic modulus of the whole ball head body is reduced, deformation can occur more easily when the ball head body is pressed, and the phenomenon of damage caused by stress accumulation is not easy to occur. The material consumption of the ball head body is reduced, and meanwhile, the good strength can be still kept.

Optionally, the length of the side of the cross section of the filling block adjacent to the spherical shell is greater than the length of the side of the cross section of the filling block adjacent to the insertion column.

Through adopting above-mentioned technical scheme, the one end area that makes the obturator be connected with the spherical shell is greater than the area of the other end, under the even prerequisite of assurance stress conduction dispersion, further reduction the size of obturator, and then lightened the weight of bulb body, further reduced the burden of patient's own soft tissue and all the other bones, make the patient be difficult for feeling uncomfortable because bulb body weight is overweight when using this artificial hip joint.

Optionally, the distance between two adjacent filling blocks is larger than the side edge of the cross section of the filling block adjacent to the insertion column.

By adopting the technical scheme, the distance between two adjacent filling blocks is larger, the weight of the ball head body is further reduced, and the burden of soft tissues and other bones of a patient is reduced.

Optionally, the length of the insertion column is greater than the distance between a point of the ball head body far away from the ball end face and the ball end face.

Through adopting above-mentioned technical scheme, the one end that makes the post of inserting is located the outside of bulb body, has increased the length of inserting the post, makes the bone handle when penetrating the insert hole, and bone handle and bulb body coupling are more stable, and whole bulb body structure is more firm.

Optionally, the two ends of the insertion hole have different sizes, and one end of the insertion hole close to the interior of the spherical shell is smaller than one end of the insertion hole far away from the interior of the spherical shell.

Through adopting above-mentioned technical scheme, the biggest one end in insert hole is located the spherical shell outside, and when the installation bone handle, the bone handle tip of chooseing for use just is provided with the pyramis that equals with the patchhole size, can be convenient wear to establish in the insert hole with the bone handle to when fixed and patchhole inside wall laminating, the bone handle is fixed and is locked, is difficult for appearing not hard up phenomenon.

Optionally, the edge of one end of the insertion hole far away from the interior of the spherical shell is provided with a chamfer.

Through adopting above-mentioned technical scheme, be provided with the chamfer at the biggest end department of patchhole, can make people wear to establish the stem of bone in the patchhole more easily, the installation is swift and convenient.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the burden of the soft tissue and other bones of the patient is reduced, so that the patient is not easy to feel uncomfortable due to the overweight of the ball head body when using the artificial hip joint;

2. the elastic modulus of the ball head body is reduced, stress conduction of the ball head body is more uniformly dispersed, the structure is stable, and the ball head is not easy to damage.

Drawings

Fig. 1 is a schematic structural diagram of the present embodiment.

Fig. 2 is a cross-sectional view of the ball head body.

Description of reference numerals: 1. a ball head body; 11. a ball end face; 2. a spherical shell; 3. inserting the post; 31. an insertion hole; 4. a filling section; 41. hollowing out the grooves; 42. and filling the blocks.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses umbrella structure bulb. Referring to fig. 1, the umbrella-shaped structure ball head comprises a ball head body 1, and the ball head body 1 is in a segment shape. The plane in the ball head body 1 is a ball end surface 11, and the distance between one end of the ball head body 1 far away from the ball end surface 11 and the ball end surface 11 is greater than the radius of the ball head body 1. The ball head body 1 is divided into a ball shell 2, an insertion column 3 and a filling part 4, and the ball shell 2, the insertion column 3 and the filling part 4 are integrally formed.

Referring to fig. 1 and 2, the insertion column 3 is cylindrical, the length of the insertion column 3 is greater than the distance between one end of the ball head body 1 far away from the ball end face 11 and the ball end face 11, and the axis of the insertion column 3 is perpendicular to the ball end face 11. One end of the inserting column 3 is arranged in the spherical shell 2 in a penetrating way and is connected with the inner side surface of the spherical shell 2. An insertion hole 31 is formed in the end face of the other end of the insertion column 3, and the diameter of one end of the insertion hole 31 located inside the spherical shell 2 is smaller than that of one end located outside the spherical shell 2. A chamfer is provided at the edge of the insertion hole 31 at the end outside the spherical shell 2. The biggest one end of patchhole 31 is located the spherical shell 2 outside, can be convenient wear to establish the stem in patchhole 31 to when fixed and patchhole 31 inside wall laminating, the stem is fixed and locking, difficult appearance not hard up phenomenon.

Referring to fig. 1, three hollow grooves 41 are formed in the spherical end surface 11 of the filling portion 4, the cross section of each hollow groove 41 is in a sector shape, an outer arc in the cross section of each hollow groove 41 coincides with the inner side surface of the spherical shell 2, and an inner arc in the sector shape coincides with the outer side surface of the insertion column 3. The hollow grooves 41 are circumferentially arranged along the outer side surface of the insertion column 3, and the distance between every two adjacent hollow grooves 41 is equal. The filling part 4 located between two adjacent hollow-out grooves 41 is a filling block 42. The cross section of the filling block 42 is also in a sector ring shape, and the length of an inner arc in the cross section of the filling block 42 is smaller than that of an inner arc in the cross section of the hollow groove 41. Because the filler blocks 42 are equally spaced, stress conduction is distributed and uniform. The size of the gap between the filling parts 4 is equal, so that the elastic modulus of the whole ball head body 1 is reduced, the deformation can be more easily caused when the ball head is pressed, and the phenomenon of damage caused by stress accumulation is not easy to occur. The material consumption of the ball head body 1 is reduced, and meanwhile, the good strength can be still kept.

The implementation principle of the umbrella-shaped structure ball head in the embodiment of the application is as follows: the hollow groove 41 is formed in the filling part 4 of the ball head body 1, so that the weight of the ball head body 1 is effectively reduced. The shape of the spherical shell 2 in the ball head body 1 is not changed, so that the spherical shell can be stably embedded into the mortar cup and can not freely rotate in the mortar cup. The shape of the insertion post 3 in the ball head body 1 is not changed, so that the stem can be normally inserted into the insertion hole 31. After filling portion 4 is fretwork, remaining part is filling block 42, and filling block 42 can couple together spherical shell 2 inside wall with insert post 3, inserts the difficult unsettled phenomenon that appears of post 3, can support spherical shell 2. The burden of the soft tissue and other bones of the patient is reduced, and the patient is not easy to feel uncomfortable due to the overweight of the ball head body 1 when using the artificial hip joint.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an umbelliform structure bulb, includes bulb body (1) of spherical segment form, and the bottom surface of bulb body (1) is ball end face (11), and ball end face (11) center department has seted up patchhole (31), its characterized in that: the ball head body (1) is divided into a ball shell (2), a filling part (4) and an insertion column (3), an insertion hole (31) is formed in the end face of the insertion column (3), the insertion column (3) penetrates through the ball shell (2), and the filling part (4) is filled between the insertion column (3) and the ball shell (2); the hollow groove (41) is formed in the filling part (4), the filling part (4) comprises a filling block (42), and the filling block (42) is fixedly connected with the inner side wall of the spherical shell (2) and the outer side surface of the insertion column (3) at the same time.

2. An umbrella-structured ball head as claimed in claim 1, wherein: one end of the insertion column (3) is fixedly connected with the inner side surface of the spherical shell (2).

3. An umbrella-structured ball head as claimed in claim 1, wherein: the filling part (4) comprises at least two filling blocks (42), the filling blocks (42) are circumferentially arranged along the outer side surface of the insertion column (3), and the distance between every two adjacent filling blocks (42) is equal.

4. An umbrella-structured ball head as claimed in claim 3, wherein: the length of the side edge of the cross section of the filling block (42) adjacent to the spherical shell (2) is greater than that of the side edge of the cross section of the filling block (42) adjacent to the insertion column (3).

5. An umbrella-structured ball head as claimed in claim 4, wherein: the distance between two adjacent filling blocks (42) is larger than the side edge of the cross section of the filling block (42) adjacent to the insertion column (3).

6. An umbrella-structured ball head as claimed in claim 1, wherein: the length of the insertion column (3) is larger than the distance between one point of the ball head body (1) far away from the ball end face (11) and the ball end face (11).

7. An umbrella-structured ball head as claimed in claim 1, wherein: the sizes of the two ends of the insertion hole (31) are different, and one end, close to the interior of the spherical shell (2), in the insertion hole (31) is smaller than one end, far away from the interior of the spherical shell (2), of the insertion hole (31).

8. An umbrella-structured ball head as claimed in claim 7, wherein: the edge of one end of the insertion hole (31) far away from the interior of the spherical shell (2) is provided with a chamfer.