阅读说明：本技术 一种保留髋关节的关节外人工关节结构 (Keep hip joint's extraarticular artificial joint structure ) 是由 王昶 王江田 于 2020-05-19 设计创作，主要内容包括：本发明涉及医疗卫生关节外科技术领域,公开了一种保留髋关节的关节外人工关节结构,包括股骨髓内钉,股骨髓内钉中部安装股骨颈空心螺旋螺钉,股骨髓内钉远端安装锁定螺钉,所述股骨髓内钉顶端安装多关节固定连杆,多关节固定连杆顶端安装U型卡扣和两枚骨盆固定螺钉。本发明,保留了原有人体自身的关节,解决了人工髋关节置换切除原有自身的关节带来的不良后果；可以大大减少病变髋关节的负重,有利于原有髋关节病变的恢复。(The invention relates to the technical field of medical and sanitary joint surgery, and discloses an artificial joint structure outside a joint for retaining a hip joint. The invention keeps the original joint of the human body and solves the adverse effect caused by artificial hip joint replacement and excision of the original joint; can greatly reduce the load of the hip joint with pathological changes and is beneficial to the recovery of the pathological changes of the original hip joint.)

1. The utility model provides a remain hip joint's outer artificial joint structure of joint, includes femoral intramedullary nail (1), its characterized in that, femoral intramedullary nail (1) mid-mounting femoral neck hollow spiral screw (2), femoral intramedullary nail (1) distal end installation locking screw (3), fixed connecting rod of many joints (4) are installed at femoral intramedullary nail (1) top, fixed connecting rod of many joints (4) top installation U type buckle (5), two pelvis fixing screw (6) of fixed connecting rod of many joints (4) upper end installation.

2. An extra-articular joint prosthesis structure preserving the hip joint according to claim 1, characterized in that the pelvic fixation screw (6) has a diameter of 5 mm.

3. The extra-articular artificial joint structure preserving the hip joint according to claim 1, characterized in that the multi-articular fixed link (4) has a length of 50mm and a diameter of 8 mm.

4. The structure of an extra-articular artificial joint for preserving the hip joint according to claim 1 or 3, characterized in that the U-shaped clasp (5) has a length of 30mm, a width of 25mm and a thickness of 10 mm.

Technical Field

The invention relates to the technical field of medical and sanitary joint surgery, in particular to an extra-joint artificial joint structure for retaining hip joints.

Background

The artificial total hip replacement is a joint replacement treatment technology gradually developed in recent times, can improve and relieve late hip joint pain, and can improve the life quality of patients. The artificial hip joint replacement is made of metal, high molecular polyethylene, ceramic and other materials, and is implanted into human body to replace diseased hip joint and to reach the aim of relieving joint pain and restoring joint function.

The artificial total hip joint replacement operation cuts the hip joint of a human body, the artificial total hip joint (made of materials such as metal, high polymer polyethylene, ceramic and the like) is implanted after the human body joint is taken out, the artificial total hip joint has the service life, the risk of joint replacement operation again cannot be avoided, and the operation risks such as postoperative infection, prosthesis loosening and the like exist.

Disclosure of Invention

The present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide an extra-articular artificial joint structure that retains a hip joint.

In order to achieve the purpose, the invention provides the following technical scheme:

an artificial joint structure outside a joint for keeping a hip joint comprises a femoral intramedullary nail, wherein a femoral neck hollow spiral screw is arranged in the middle of the femoral intramedullary nail, a locking screw is arranged at the far end of the femoral intramedullary nail, a multi-joint fixing connecting rod is arranged at the top end of the femoral intramedullary nail, and a U-shaped buckle is arranged at the top end of the multi-joint fixing connecting rod.

As a further scheme of the invention: two pelvis fixing screws are arranged at the upper end of the multi-joint fixing connecting rod.

As a further scheme of the invention: the diameter of the pelvis fixing screw is 5 mm.

As a further scheme of the invention: the multi-joint fixing connecting rod is 50mm long and 8mm in diameter.

As a still further scheme of the invention: the U-shaped buckle is 30mm long, 25mm wide and 10mm thick.

Compared with the prior art, the invention has the beneficial effects that:

1. the original joint of the human body is reserved, the adverse effect caused by cutting the original joint is solved, for example, the artificial hip joint has the service life, and the risk of secondary operation is avoided. The artificial hip joint replacement has the operation risks of postoperative infection, prosthesis loosening and the like, and reduces the re-revision risk of the artificial hip joint after the operation;

2. can greatly reduce the load of the hip joint with pathological changes and is beneficial to the recovery of the pathological changes of the original hip joint. For example: (1) if the patient suffers from femoral head necrosis, the collapse of the femoral head can be prevented by reducing the load of the hip. (2) If the femoral head necrosis patient with the collapsed femoral head is detected, the weight is reduced, and the hollow screw implanted into the femoral neck can be used for implanting bone to the collapsed part, so that the appearance of the femoral head can be recovered. (3) If the fracture of the neck of femur is combined, the load of the hip joint is reduced, the fracture of the neck of femur is easy to heal, and the displacement of the fracture of the neck of femur can be prevented. (4) If the patient with severe osteoarthritis is in need, the pain symptom of the patient can be obviously improved by reducing the load of the hip joint, the service life of the hip joint is prolonged, and the artificial total hip joint replacement operation is avoided. The functions of the hip joint are kept to the maximum extent.

Drawings

Fig. 1 is a cross-sectional structural view of an extra-articular artificial joint structure that preserves a hip joint.

Fig. 2 is a structural diagram of an extra-articular artificial joint structure for preserving a hip joint.

Fig. 3 is a final structural view of an extra-articular artificial joint structure with a hip joint remaining installed inside a human body.

Fig. 4-7 are schematic views of the process structure of the installation of the artificial joint structure outside the joint for keeping the hip joint in the human body.

In the figure: 1-femoral intramedullary nail, 2-femoral neck hollow spiral screw, 3-locking screw, 4-multi-joint fixing connecting rod, 5-U-shaped buckle and 6-pelvis fixing screw.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1-3, in the embodiment of the invention, an artificial joint structure outside a joint for retaining a hip joint comprises an intramedullary nail 1, wherein the diameter of the intramedullary nail 1 is 9mm, the length of the intramedullary nail is 200mm, a femoral neck hollow spiral screw 2 is arranged in the middle of the intramedullary nail 1, the length of the femoral neck hollow spiral screw 2 is 90mm, a locking screw 3 is arranged at the far end of the intramedullary nail 1, the diameter of the locking screw 3 is 4.5mm, the length of the locking screw is 3.6mm, a multi-joint fixing connecting rod 4 is arranged at the top end of the intramedullary nail 1, the length of the multi-joint fixing connecting rod 4 is 50mm, the diameter of the multi-joint fixing connecting rod is 8mm, two pelvis fixing screws 6 are arranged at the upper end of the multi-joint fixing connecting rod 4, the diameter of the pelvis fixing screw 6 is 5mm, a U-shaped buckle 5 is arranged at the.

After the epidural anesthesia is successful, the patient lies on the lower limb traction bed and is spread with a conventional disinfection towel. The hip joint and the proximal femur are positively and laterally seen through the C-shaped arm X-ray machine. Making an incision of about 12cm long from the tip of the greater trochanter to the anterior superior iliac spine, cutting the skin, subcutaneous fascia, deep fascia, and iliotibial band layer by layer, and separating muscle blunt to expose pear-shaped fossa. The positioning needle is positioned at the entrance of the femoral intramedullary nail under the perspective of the C-arm X-ray machine, the opening is opened, the guide needle is inserted, the front side perspective guide needle is positioned in the medullary cavity, the medullary is expanded by the guiding needle, and the main nail of the femoral intramedullary nail with the diameter of 9X 200mm is inserted into the medullary cavity by the guiding needle (as shown in figure 4).

Installing a guider, making a notch with the length of about 1.5cm at the near end of the outer side of the thigh, inserting a working sleeve, drilling 1 guide pin along the sleeve, keeping a proper front inclination angle, enabling the position of the front side perspective guide pin in the femoral neck to be good, knocking in a femoral neck hollow spiral screw (with the diameter of 6 mm) with the length of 90mm to a position 5mm below the cortex of the femoral head, and screwing a tail cap of the screw and fixing the screw on a main nail. The distal end of the main nail is screwed into 1 locking screw (diameter 4.5mm, length 3.6 mm) (as shown in figure 5).

Above the acetabulum, pelvic fixation screws (5 mm in diameter) of appropriate length are screwed along the suprapubic support. A pelvis fixing screw (with the diameter of 5 mm) with proper length is screwed into the proximal end along the ilium, and a U-shaped buckle on the ilium is installed, and the U-shaped buckle can further increase the weight-bearing stabilizing function.

Referring to fig. 6, the two pelvis fixing screws are fixed on the main nail in the femoral bone marrow by installing a multi-joint fixing connecting rod. The multi-joint fixing connecting rod can ensure the normal moving range of the hip joint and provide load bearing support force at the same time.

Referring to fig. 7, the wound is irrigated, the hose is placed for drainage, the incision is sutured layer by layer, and the disinfection bandaging operation is finished.

The invention keeps the original joint of the human body, solves the adverse effect caused by cutting the original joint, for example, the artificial hip joint has the service life, and avoids the risk of re-operation. The artificial hip joint replacement has the operation risks of postoperative infection, prosthesis loosening and the like, and reduces the re-revision risk of the artificial hip joint after the operation.

The invention can greatly reduce the load of the hip joint with pathological changes and is beneficial to the recovery of the pathological changes of the original hip joint. For example: (1) if the patient suffers from femoral head necrosis, the collapse of the femoral head can be prevented by reducing the load of the hip. (2) If the femoral head necrosis patient with the collapsed femoral head is detected, the weight is reduced, and the hollow screw implanted into the femoral neck can be used for implanting bone to the collapsed part, so that the appearance of the femoral head can be recovered. (3) If the fracture of the neck of femur is combined, the load of the hip joint is reduced, the fracture of the neck of femur is easy to heal, and the displacement of the fracture of the neck of femur can be prevented. (4) If the patient with severe osteoarthritis is in need, the pain symptom of the patient can be obviously improved by reducing the load of the hip joint, the service life of the hip joint is prolonged, and the artificial total hip joint replacement operation is avoided. The functions of the hip joint are kept to the maximum extent.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.