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Femoral neck fracture hollow nail screw rotary disc positioning device

A technology for femoral neck fracture and positioning device, which is used in stereotaxic surgical instruments, fixators, medical science and other directions, can solve problems such as surgical failure, and achieve the effects of shortening operation time, reducing blood loss, and fast and accurate operation.

Pending Publication Date: 2019-01-18
陈聚伍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the various problems existing in the hollow nail fixation operation of the existing femoral neck fracture and the status quo that is likely to lead to operation failure. Fast, accurate and stable positioning of the guide wire and flexible application to various surgical environments

Method used

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  • Femoral neck fracture hollow nail screw rotary disc positioning device
  • Femoral neck fracture hollow nail screw rotary disc positioning device
  • Femoral neck fracture hollow nail screw rotary disc positioning device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Embodiment 1: The first kind of cannulated nail rotary disk positioning device for femoral neck fracture, see figure 1 , figure 2 with Figure 4 As shown, the device is mainly composed of a rotation adjustment mechanism, a lateral movement adjustment mechanism, a longitudinal movement adjustment mechanism, a universal joint positioning mechanism, and a fixing mechanism.

[0057] Among them, the rotation adjustment mechanism refers to Figure 5-Figure 9 shown. The base 1 is a support component connected with the fixing mechanism. The fixing mechanism can be a support frame and a fixing rod as shown in the figure. The support frame is used to fix and lock with the side bracket of the operating table. The fixing rod can be fixed with clamps or other locking parts. There are various fixing methods, which are unknown. stated. In this embodiment, the underside of the base 1 is connected with a composite seat, such as figure 1 , the composite seat is parallel to the bas...

Embodiment 2

[0065] Embodiment 2: the second kind of cannulated nail rotary disk positioning device for femoral neck fracture, see Figure 15 , the device includes a rotation adjustment mechanism, a lateral movement adjustment mechanism, a longitudinal movement adjustment mechanism and a rotation positioning mechanism.

[0066] The universal joint positioning mechanism that this embodiment adopts is the same as Embodiment 1, as Figure 4 with Figure 13 As shown, the universal joint positioning mechanism includes a fixed collar 47 , a movable collar 48 and an inner ball 49 . Wherein, the inner surface of the fixed ring 47 and the movable ring 48 is a spherical surface, and after the two are combined and fixed, they are matched and fitted on the outside of the inner sphere 49, and the center of the inner sphere 49 is provided with a central positioning hole 50 for installing the center of the femoral neck. The guide tube is provided with an edge guide insertion hole 51 around the central ...

Embodiment 3

[0070] Embodiment 3: The third hollow nail turntable positioning device for femoral neck fractures includes a rotation adjustment mechanism, a lateral movement adjustment mechanism, a longitudinal movement adjustment mechanism and a rotation positioning mechanism.

[0071] In this embodiment, a rotation positioning mechanism is used to replace the universal joint positioning mechanism in Embodiment 1, and an approximate adjustment function is realized, such as Figure 16 The rotation positioning mechanism in the middle includes a swivel body 61 and a fork-shaped bracket 63, wherein the center of the swivel body 61 is provided with a central guide tube for installing the femoral neck, and an edge guide socket 51 is provided around the center positioning hole 50 for aligning the femoral neck. Guide pin positioning.

[0072] Rotating shafts 62 are symmetrically fixed on both sides of the rotating body 61, fork-shaped brackets 63 and shaft holes are respectively provided at the en...

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Abstract

The invention discloses a femoral neck fracture hollow nail screw rotary disc positioning device, which comprises a rotation adjusting mechanism, a transverse displacement adjusting mechanism, a longitudinal displacement adjusting mechanism and a universal joint positioning mechanism. The rotary disc positioning device comprises a rotary adjusting mechanism, a transverse displacement adjusting mechanism, a longitudinal displacement adjusting mechanism and a universal joint positioning mechanism. The invention adopts the femoral neck guide pin as the fixed axis, and determines the installationposition of the hollow nail through the rotation of the rotary positioner. The hollow nail can be rotationally adjusted and positioned in parallel with the guide pin of the femoral neck at all times.Thus, the purpose of fast and accurate parallel positioning of the hollow pin can be achieved. Compared with the prior art, the invention realizes the simplification of the structure and the simplicity of the operation under the condition of complete functions, has wide use range, and is more conducive to the popularization and application.

Description

technical field [0001] The invention belongs to the field of femoral neck fracture positioning instruments, in particular to a femoral neck fracture hollow nail turntable type positioning device. Background technique [0002] At present, human society is aging, and fractures of femoral neck and femoral trochanter are common and frequently-occurring diseases of the elderly. When a femoral neck fracture or an intertrochanteric fracture is fixed with a screw and a nail-plate system, the femoral neck guide pin must be inserted first, and the guide pin is mainly used to control the neck-shaft angle and anteversion angle. At present, there are accurate and simple aiming devices for the control of the neck-shaft angle of the guide pins, but the control of the anteversion angle is still based on empirical judgment; in addition, when femoral neck fractures are fixed with hollow screws, the positions of the three guide pins need to be adjusted. It has been adjusted many times during ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B90/11A61B17/90
CPCA61B17/88A61B90/11A61B2017/564A61B17/90
Inventor 陈聚伍
Owner 陈聚伍
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