CN215019749U

CN215019749U - Artificial joint

Info

Publication number: CN215019749U
Application number: CN202120496781.3U
Authority: CN
Inventors: 温旋威
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-09
Filing date: 2021-03-09
Publication date: 2021-12-07
Anticipated expiration: 2031-03-09

Abstract

The utility model discloses an artificial joint; belongs to the technical field of medical treatment and bionics; the technical key point of the ball joint comprises a ball head body and a ball sleeve body which is rotationally connected with the ball head body, wherein the ball head body consists of a spherical joint head and a first connecting joint arranged at one end of the spherical joint head; the ball sleeve body consists of a connecting sleeve and a second connector, wherein one end of the connecting sleeve is provided with a spherical groove, and the inner diameter of the spherical groove is matched with the diameter of the spherical joint head; the opening section of the spherical groove is positioned on the small circular section of the spherical groove at one side far away from the second connector; a plurality of arc-shaped abdicating notches are arranged at intervals along the circumferential direction at the opening end of the connecting sleeve, and the arc surfaces of the arc-shaped abdicating notches are in smooth transition with the end surface of the opening of the connecting sleeve; the first connector is wrapped in the connecting sleeve through the spherical joint head and is hinged with the second connector; the utility model aims at providing a simple structure, flexibility and motion stability are higher, can satisfy different joint needs and carry out emulation artificial joint.

Description

Artificial joint

Technical Field

The present invention relates to a joint, and more particularly, to an artificial joint.

Background

The artificial joint has wide application, and can be applied to the replacement of human joints and equipment with a plurality of highly flexible and complex mechanisms. In the medical field and the robot field, artificial joints are generally used for simulating or replacing human joint motions, but human joints are divided into a plurality of types and have different functions, the existing artificial joints cannot meet the requirements, and most of the existing artificial joints are purely connected by rigid parts, so that the artificial joints have more parts and complex structures, are low in flexibility and motion stability, and cannot well simulate the normal joint motions of human bodies.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to the not enough of above-mentioned prior art, provide a simple structure, flexibility and motion stability are higher, can satisfy different joint needs and carry out the artificial joint that emulation was imitated.

The technical scheme of the utility model is realized like this: an artificial joint comprises a ball head body and a ball sleeve body which is rotationally connected with the ball head body, wherein the ball head body consists of a spherical joint head and a first connecting joint arranged at one end of the spherical joint head; the ball sleeve body consists of a connecting sleeve and a second connector, wherein one end of the connecting sleeve is provided with a spherical groove, and the inner diameter of the spherical groove is matched with the diameter of the spherical joint head; the opening section of the spherical groove is positioned on the small circular section of the spherical groove at the side far away from the second connector; a plurality of arc-shaped abdicating notches matched with the first connecting joint are arranged at intervals along the circumferential direction at the opening end of the connecting sleeve, and the arc surfaces of the arc-shaped abdicating notches are in smooth transition with the end surface of the opening of the connecting sleeve; the first connector is wrapped in the connecting sleeve through the spherical joint head and is hinged with the second connector.

In the artificial joint, the spherical joint head and the first connecting joint are integrally formed.

In the artificial joint, the ball sleeve body consists of a left sleeve body and a right sleeve body which are divided into halves along the central line of the ball sleeve body; the connecting sleeve positioned on the upper part of the left sleeve body and the second connecting head positioned on the lower part of the left sleeve body are of an integrally formed structure, and the connecting sleeve positioned on the upper part of the right sleeve body and the second connecting head positioned on the lower part of the right sleeve body are of an integrally formed structure.

In the artificial joint, the arc abdicating notch is matched with the opening end of the connecting sleeve to form a rotating area of the first connecting sleeve, wherein one side of the arc abdicating notch with the maximum depth is the front side of the rotating direction; the range of the matching rotation angle of the spherical joint head and the spherical groove under the limitation of the first connector is 90-200 degrees at the front side and the rear side and 60-110 degrees at the left side and the right side.

In the above artificial joint, the range of the fitting rotation angle between the spherical joint head and the spherical groove under the limitation of the first connector is 180 degrees along the front and back sides and 60 degrees to 100 degrees along the left and right sides.

In the artificial joint, the range of the matching rotation angle between the spherical joint head and the spherical groove under the limitation of the first connector is 90-110 degrees on the front side and the rear side, and 75-95 degrees on the left side and the right side.

In the above artificial joint, the range of the fitting rotation angle between the spherical joint head and the spherical groove under the limitation of the first connector is 100 degrees on the front and rear sides and 125 degrees on the left and right sides, and 90 to 110 degrees on the left and right sides.

By adopting the structure, the spherical joint head and the spherical groove can be matched and wrapped in the connecting sleeve by arranging the opening section of the spherical groove on the small circular section of the spherical groove on one side, away from the second connector, of the spherical groove, so that the spherical joint head is effectively prevented from being separated from the spherical groove when rotating; through set up the arc breach of stepping down at the adapter sleeve open end, can prescribe a limit to the rotation range of first connector when spherical joint head drives first connector and rotates, accurate simulation human normal joint motion when guaranteeing first connector rotation flexibility.

Drawings

The present invention will be described in further detail with reference to the following examples, which are not intended to limit the invention.

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a partial cross-sectional view of FIG. 1;

fig. 3 is another schematic structural diagram of the present invention;

FIG. 4 is a partial cross-sectional view of FIG. 3;

fig. 5 is another schematic structural diagram of the present invention;

FIG. 6 is a partial cross-sectional view of FIG. 5;

fig. 7 is a schematic view of the usage state of the present invention.

In the figure: 1. a ball head body; 1a, a spherical joint head; 1b, a first connector; 2. a ball sleeve body; 2a, a spherical groove; 2b, connecting sleeves; 2c, a second connector; 2d, arc abdicating gaps; 3. a left sleeve body; 4. the right sleeve body.

Detailed Description

Referring to fig. 1 to 6, the artificial joint of the present invention includes a ball head body 1 and a ball sleeve body 2 rotatably connected to the ball head body 1, wherein the ball head body 1 is composed of a spherical joint head 1a and a first connector 1b disposed at one end of the spherical joint head 1 a; the ball sleeve body 2 consists of a connecting sleeve 2b and a second connector 2c, wherein one end of the connecting sleeve is provided with a spherical groove 2a, and the inner diameter of the spherical groove 2a is matched with the diameter of the spherical joint head 1 a; the opening section of the spherical groove 2a is positioned on the small circular section of the spherical groove 2a far away from the second connector 2 c; a plurality of arc-shaped abdicating notches 2d matched with the first connecting head 1b are arranged at intervals along the circumferential direction at the opening end of the connecting sleeve 2b, and the arc surfaces of the arc-shaped abdicating notches 2d are in smooth transition with the opening end surface of the connecting sleeve 2 b; the first connector 1b is wrapped in the connecting sleeve 2b through the spherical joint head 1a and is hinged with the second connector 2 c; the opening section of the spherical groove 2a is arranged on the small circular section of the spherical groove 2a far away from the second connector 2c, so that the spherical joint head 1a and the spherical groove 2a can be matched and wrapped in the connecting sleeve 2b, and the spherical joint head 1a is effectively prevented from being separated from the spherical groove 2a when rotating; through set up the arc notch 2d of stepping down at adapter sleeve 2b open end, can prescribe a limit to first connector 1 b's rotation scope when spherical joint head 1a drives first connector 1b and rotates, accurate simulation human normal joint motion when guaranteeing first connector 1b rotation flexibility.

Preferably, the spherical joint head 1a and the first connecting head 1b are an integrally formed integral structure; the joint strength of the spherical joint head 1a and the first joint head 1b can be effectively improved, and the service life of the artificial joint is prolonged.

Further, the ball sleeve body 2 consists of a left sleeve body 3 and a right sleeve body 4 which are half-separated along the central line thereof; the connecting sleeve 2b positioned on the upper part of the left sleeve body 3 and the second connecting head 2c positioned on the lower part of the left sleeve body 3 are of an integrally formed structure, and the connecting sleeve 2b positioned on the upper part of the right sleeve body 4 and the second connecting head 2c positioned on the lower part of the right sleeve body 4 are of an integrally formed structure; through half the ball cover body 2 divide into left cover body 3 and right cover body 4, can guarantee the motion stability of the ball cover body 2 and convenient when working strength carry out dismouting change and maintenance to the ball cover body 2.

In this embodiment, the left sleeve body 3 and the right sleeve body 4 are detachably connected by bolts; can conveniently carry out the dismouting to the ball cover body 2, conveniently change and maintain it.

Preferably, the arc abdicating notch 2d is matched with the opening end of the connecting sleeve 2b to form a rotating area of the first connecting joint 1b, wherein one side of the arc abdicating notch 2d positioned at the maximum depth is the front side of the rotating direction; the range of the matching rotation angle of the spherical joint head 1a and the spherical groove 2a under the limit of the first connector 1b is 90-200 degrees at the front side and the rear side, and 60-110 degrees at the left side and the right side; the arc-shaped abdicating notch 2d with different depths can limit the rotation angle of the spherical joint head 1a in the spherical groove 2a, and the actual motion conditions of different joints of the human body can be accurately simulated.

Further, the matching rotation angle range of the spherical joint head 1a and the spherical groove 2a under the limit of the first connecting head 1b is 180 DEG and 200 DEG on the front and back sides and 60 DEG to 100 DEG on the left and right sides; the corresponding flexion (namely the front side) and the back extension (namely the back side) of the wrist joint of the human body are respectively 90 degrees under the condition of straightening, and the maximum range of the left and right sides bending is 50 degrees; the corresponding palm joints of the index finger, the middle finger, the ring finger and the little finger of the human body have the flexion limit of 90-110 degrees and the dorsi flexion of about 90 degrees; the index finger takes the right hand as reference, the left side bending range is 30-35 degrees, the right side bending range is 50-55 degrees, the left side bending range of the middle finger is 30-35 degrees, the right side bending range is 45-50 degrees, the left side bending range of the ring finger is 30-35 degrees, the right side bending range is 30-40 degrees, the left side bending range of the little finger is 40-50 degrees, and the right side bending range is 40-50 degrees.

Preferably, the range of the matching rotation angle of the spherical joint head 1a and the spherical groove 2a under the limit of the first connector 1b is 90-110 degrees on the front and back sides and 75-95 degrees on the left and right sides; the corresponding human thumb has a flexion range of 30-40 degrees, a back extension range of 60-70 degrees, a left side bending range of 55-65 degrees and a right side bending range of 20-30 degrees.

Further, the matching rotation angle range of the spherical joint head 1a and the spherical groove 2a under the limit of the first connecting head 1b is 100 DEG and 125 DEG on the front and back sides, and 90 DEG to 110 DEG on the left and right sides; the corresponding human ankle joint takes the right foot as reference, the back bending range is 35-45 degrees, and the left and right sides of the human ankle joint can respectively move 15-25 degrees at the back bending limit position; the bending range is 65-80 degrees, and the left side and the right side of the bending limit position can respectively move 15-25 degrees; the left-hand bending range is 40-50 deg. and the right-hand bending range is 50-60 deg. in the rest position. The flexion range of each limit position is 40-50 degrees, and the back extension range is 30-40 degrees.

Preferably, a power guiding structure connected with the outer side wall of the first connecting head 1b and used for guiding the first connecting head 1b to rotate is arranged on the periphery side of the connecting sleeve 2 b.

The above embodiment is the preferred embodiment of the present invention, which is only used to facilitate the explanation of the present invention, it is not right to the present invention, which makes the restriction on any form, and any person who knows commonly in the technical field can use the present invention to make the equivalent embodiment of local change or modification without departing from the technical features of the present invention.

Claims

1. An artificial joint comprises a ball head body (1) and a ball sleeve body (2) rotationally connected with the ball head body (1), and is characterized in that the ball head body (1) consists of a spherical joint head (1a) and a first connecting joint (1b) arranged at one end of the spherical joint head (1 a); the ball sleeve body (2) consists of a connecting sleeve (2b) and a second connecting head (2c), wherein one end of the connecting sleeve is provided with a spherical groove (2a), and the inner diameter of the spherical groove (2a) is matched with the diameter of the spherical joint head (1 a);

the opening section of the spherical groove (2a) is positioned on the small circular section of one side of the spherical groove (2a) far away from the second connector (2 c); a plurality of arc-shaped abdicating notches (2d) matched with the first connecting joint (1b) are arranged at intervals along the circumferential direction at the opening end of the connecting sleeve (2b), and the arc surfaces of the arc-shaped abdicating notches (2d) are in smooth transition with the opening end surface of the connecting sleeve (2 b); the first connector (1b) is wrapped in the connecting sleeve (2b) through the spherical joint head (1a) and hinged with the second connector (2 c).

2. An artificial joint according to claim 1, wherein the spherical joint head (1a) and the first joint head (1b) are of one-piece integral construction.

3. An artificial joint according to claim 1, characterized in that the ball covering (2) consists of a left covering (3) and a right covering (4) divided in half along their central axis; the connecting sleeve (2b) positioned on the upper part of the left sleeve body (3) and the second connecting head (2c) positioned on the lower part of the left sleeve body (3) are of an integrally formed structure, and the connecting sleeve (2b) positioned on the upper part of the right sleeve body (4) and the second connecting head (2c) positioned on the lower part of the right sleeve body (4) are of an integrally formed structure.

4. The artificial joint according to claim 1, wherein the arc-shaped abdicating notch (2d) and the opening end of the connecting sleeve (2b) cooperate to form a rotating area of the first connecting sleeve (1b), wherein one side of the arc-shaped abdicating notch (2d) at the maximum depth is the front side in the rotating direction; the matched rotation angle range of the spherical joint head (1a) and the spherical groove (2a) under the limit of the first connecting head (1b) is 90-200 degrees at the front and back sides and 60-110 degrees at the left and right sides.

5. An artificial joint according to claim 4, wherein the spherical joint head (1a) and the spherical groove (2a) are engaged in a rotation angle range of 180 ° on the front and rear sides and 60-100 ° on the left and right sides, respectively, at the limit of the first joint (1 b).

6. An artificial joint according to claim 4, wherein the spherical joint head (1a) is adapted to rotate with the spherical groove (2a) in the range of 90-110 ° on the anterior and posterior sides and 75-95 ° on the left and right sides, respectively, at the limit of the first joint (1 b).

7. An artificial joint according to claim 4, wherein the spherical joint head (1a) and the spherical groove (2a) are engaged in a rotation angle range of 100 ° on the front and rear sides and 90-110 ° on the left and right sides, respectively, under the limit of the first joint (1 b).