CN215018742U

CN215018742U - Hip joint external fixator for treating ischemic necrosis of femoral head of child

Info

Publication number: CN215018742U
Application number: CN202121224006.9U
Authority: CN
Inventors: 罗军忠; 韩久卉; 李亚洲; 李鹏飞; 柳岩; 刘玉昌; 苏云山; 曹进超; 王宣; 李守家
Original assignee: Hengshui Zengli Medical Equipment Co ltd
Current assignee: Hengshui Zengli Medical Equipment Co ltd
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2021-12-07
Anticipated expiration: 2031-06-02

Abstract

The utility model discloses a hip joint external fixator for treating children femoral head ischemic necrosis, which comprises a main body rod, a first auxiliary rod, a front needle clamp A, a front needle clamp B, a universal component, a rotating component, a second auxiliary rod, an installation rod, an adjustment component, a rear needle clamp A and a rear needle clamp B, wherein the first auxiliary rod is hinged on the rod body of the main body rod; the first auxiliary rod is symmetrically provided with a front needle head clamp A and a front needle head clamp B; the main body rod is connected and matched with the universal assembly; the universal assembly is connected and matched with the rotating assembly. The utility model discloses during the implementation, can pull out the hip joint, keep the hip joint to bend and stretch the activity not influenced and have good fixed and stability to effectual containing through increasing the femoral head promotes remodeling of femoral head, appears ossifying to patient's femoral head, has good adjunctie therapy effect.

Description

Hip joint external fixator for treating ischemic necrosis of femoral head of child

Technical Field

The utility model relates to a hip joint external fixator, in particular to a hip joint external fixator for treating children femoral head ischemic necrosis.

Background

Ischemic necrosis of femoral head of children, also known as Legg-Calve-Perthes disease (LCPD), is treated differently in different age groups. Children under 6 years of age are often treated conservatively, but patients 6 years of age or older with more than 50% femoral head involvement are treated surgically better than non-surgically. Proximal femoral osteotomy and pelvic osteotomy have been used for patients with over 50% of LCPD affected femoral heads, and have achieved good clinical effects, and the aim is to promote remodeling of femoral heads by increasing femoral head accommodation. However, the treatment of the advanced femoral head necrosis is poor after the healing process no matter what treatment the patient receives. Hip distraction has proven valuable in some cases of LCPD that are not good after healing. Therefore, it is necessary to develop an external fixator which is easy to operate, can retract the hip joint and keep the hip joint flexion and extension activities unaffected and can be stably fixed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide a hip joint external fixator for treating children femoral head ischemic necrosis, which is simple in operation, can draw out a hip joint and keep the hip joint flexion and extension movement unaffected and can be fixed stably.

In order to achieve the above object, the utility model adopts the following technical scheme: a hip joint external fixator for treating ischemic necrosis of femoral head of children comprises a main body rod, a first auxiliary rod, a front needle head clamp A, a front needle head clamp B, a universal assembly, a rotating assembly, a second auxiliary rod, an installation rod, an adjusting assembly, a rear needle head clamp A and a rear needle head clamp B, wherein the first auxiliary rod is hinged on a rod body of the main body rod; the first auxiliary rod is symmetrically provided with a front needle head clamp A and a front needle head clamp B; the main body rod is connected and matched with the universal assembly; the universal assembly is connected and matched with the rotating assembly; the second auxiliary rod is connected and matched with the rotating component; the adjusting component is connected and matched with the second auxiliary rod and the rotating component and is used for adjusting the matching position between the second auxiliary rod and the rotating component; the mounting rod is connected and matched with the second auxiliary rod; the rear needle head clamp A and the rear needle head clamp B are arranged on the mounting rod.

Furthermore, the universal assembly comprises an eccentric sleeve, a ball seat and a universal ball rod, wherein the eccentric sleeve is connected and matched with the ball seat; the universal ball rod is inserted into the ball seat to be matched with the ball seat; the front end of the main body rod is inserted into the eccentric sleeve to be matched with the eccentric sleeve; a ball head groove is arranged in the ball seat; the universal ball rod comprises a rod part and a universal ball head, wherein the universal ball head is clamped into the ball head groove to be matched with the ball head groove, so that the universal ball rod is connected and matched with the ball seat; the rod part of the universal head ball rod is connected and matched with the rotating component.

Furthermore, the rotating assembly comprises a hemisphere assembly A and a hemisphere assembly B, and the hemisphere assembly B is hinged with the hemisphere assembly A; the hemisphere component A and the hemisphere component B respectively comprise a rod body and a hemisphere, and the hemisphere component A and the hemisphere on the hemisphere component B are in alignment fit to form a hinged fit relation; the second auxiliary rod is connected and matched with the hemisphere component B; the second auxiliary rod is provided with a slot, the rod body of the hemispherical component B is inserted into the slot of the second auxiliary rod to be matched with the second auxiliary rod, the second auxiliary rod is provided with a locking nut inserted into the slot, and the locking nut can be used for jacking and locking the rod body in the hemispherical component B to fix the position relation between the rod body and the second auxiliary rod.

Furthermore, the adjusting assembly comprises an adjusting frame A arranged on the hemispherical assembly B, an adjusting frame B arranged on the second auxiliary rod and an adjusting rod connected with the two adjusting frames, and the adjusting rod is matched with the adjusting frame A and the adjusting frame B through threads.

The utility model discloses during the implementation, needle head clamp A in the front, preceding needle head clamp B, back needle head clamp A, back needle head clamp B are gone up to install Schanz nail, ke shi needle and staple as required, after the user installation is used, through the adjustment subassembly, can pull out the hip joint, keep the hip joint to bend and stretch the activity not influenced and have good fixed and stability to effectual increase femoral head through contains, promote remodeling of femoral head, ossification appears in patient's femoral head, good adjunctie therapy effect has.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the specification and together with the description, serve to explain the principles of the specification.

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

Detailed Description

Various exemplary embodiments of the present specification will now be described in detail with reference to the accompanying drawings.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "left", "right", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Example (b):

as shown in fig. 1, the utility model comprises a main body rod 1, a first auxiliary rod 2, a front needle clip A3, a front needle clip B4, a universal component 5, a rotating component 6, a second auxiliary rod 7, a mounting rod 8, an adjusting component 9, a rear needle clip a10 and a rear needle clip B11, wherein the first auxiliary rod 2 is hinged on the rod body of the main body rod 1; the first auxiliary rod 2 is symmetrically provided with a front needle clip A3 and a front needle clip B4; the main body rod 1 is connected and matched with the universal component 5; the universal assembly 5 is connected and matched with the rotating assembly 6; the second auxiliary rod 7 is connected and matched with the rotating component 7; the adjusting component 9 is connected and matched with the second auxiliary rod 2 and the rotating component 6 and is used for adjusting the matching position between the second auxiliary rod 2 and the rotating component 6; the mounting rod 8 is connected and matched with the second auxiliary rod 2; a rear needle clip a10 and a rear needle clip B11 are mounted on the mounting bar 8.

The universal assembly 5 comprises an eccentric sleeve 12, a ball seat 13 and a universal ball rod 14, wherein the eccentric sleeve 12 is connected and matched with the ball seat 13; the universal club 14 is inserted into the ball seat 13 to match with the ball seat; the front end of the main body rod 1 is inserted into the eccentric sleeve 12 to be matched with the eccentric sleeve; a ball head groove is arranged in the ball seat 13; the universal ball rod 14 comprises a rod part and a universal ball head, wherein the universal ball head is clamped into the ball head groove to be matched with the ball head groove, so that the universal ball rod 14 is connected and matched with the ball seat 13; the shaft part of the universal ball arm 14 is connected and matched with the rotating component 6.

The rotating assembly 6 comprises a hemisphere assembly A15, a hemisphere assembly B16, a hemisphere assembly B16 is hinged and matched with the hemisphere assembly A15; the hemisphere assembly A15 and the hemisphere assembly B16 both comprise a rod body and a hemisphere, and the hemisphere assembly A15 is in contraposition fit with the hemisphere on the hemisphere assembly B16 to form a hinged fit relation; the second auxiliary rod 7 is connected and matched with the hemisphere component B16; the second auxiliary rod 7 is provided with a slot, the rod body of the hemisphere component B16 is inserted into the slot of the second auxiliary rod 7 to be matched with the slot, the second auxiliary rod 7 is provided with a locking nut 17 inserted into the slot, and the locking nut 17 can be used for pressing and locking the rod body in the hemisphere component B16 to fix the position relation of the two.

The adjusting assembly 9 comprises an adjusting frame A18 arranged on a hemisphere assembly B16, an adjusting frame B19 arranged on the second auxiliary rod 7 and an adjusting rod 20 connecting the two adjusting frames, wherein the adjusting rod 20 is matched with the adjusting frame A18 and the adjusting frame B19 through threads.

The foregoing description of the embodiments of the present specification has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the application is defined by the appended claims.

Claims

1. A hip joint external fixator for treating ischemic necrosis of femoral head of children is characterized in that: the device comprises a main body rod, a first auxiliary rod, a front needle head clamp A, a front needle head clamp B, a universal assembly, a rotating assembly, a second auxiliary rod, an installation rod, an adjustment assembly, a rear needle head clamp A and a rear needle head clamp B, wherein the first auxiliary rod is hinged on a rod body of the main body rod; the first auxiliary rod is symmetrically provided with a front needle head clamp A and a front needle head clamp B; the main body rod is connected and matched with the universal assembly; the universal assembly is connected and matched with the rotating assembly; the second auxiliary rod is connected and matched with the rotating component; the adjusting component is connected and matched with the second auxiliary rod and the rotating component and is used for adjusting the matching position between the second auxiliary rod and the rotating component; the mounting rod is connected and matched with the second auxiliary rod; the rear needle head clamp A and the rear needle head clamp B are arranged on the mounting rod.

2. The external hip joint fixator for treating ischemic necrosis of femoral head in children as claimed in claim 1, wherein: the universal assembly comprises an eccentric sleeve, a ball seat and a universal ball rod, and the eccentric sleeve is connected and matched with the ball seat; the universal ball rod is inserted into the ball seat to be matched with the ball seat; the front end of the main body rod is inserted into the eccentric sleeve to be matched with the eccentric sleeve; a ball head groove is arranged in the ball seat; the universal ball rod comprises a rod part and a universal ball head, wherein the universal ball head is clamped into the ball head groove to be matched with the ball head groove, so that the universal ball rod is connected and matched with the ball seat; the rod part of the universal ball rod is connected and matched with the rotating component; the rotating assembly comprises a hemisphere assembly A and a hemisphere assembly B, and the hemisphere assembly B is hinged with the hemisphere assembly A; the hemisphere component A and the hemisphere component B both comprise rod bodies and hemispheres, and the sphere component A and the hemispheres on the hemisphere component B are in alignment fit to form a hinged fit relation; the second auxiliary rod is connected and matched with the hemisphere component B; the second auxiliary rod is provided with a slot, the rod body of the hemispherical component B is inserted into the slot of the second auxiliary rod to be matched with the slot, and the second auxiliary rod is provided with a locking nut inserted into the slot, and the locking nut can be used for jacking and locking the rod body in the hemispherical component B to fix the position relation of the rod body and the slot; the adjusting component comprises an adjusting frame A arranged on the hemisphere component B, an adjusting frame B arranged on the second auxiliary rod and an adjusting rod connected with the two adjusting frames, and the adjusting rod is matched with the adjusting frame A and the adjusting frame B through threads.