Unlock instant, AI-driven research and patent intelligence for your innovation.

Guiding device for screw setting of minimally invasive plate osteosynthesis

A guiding device and osteosynthesis technology, applied in the field of medical surgical instruments, can solve the problems affecting the stability of the bone-internal fixation structure, the lack of channels, and the screws are easy to slip out of the screwdriver, so as to achieve good tissue blunt separation and avoid screw slippage output, improve work efficiency

Active Publication Date: 2018-11-06
李莉
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the actual operation process, due to the influence of factors such as tendon tissue tension and muscle fascia tissue resistance, locking screws are misplaced in the sliding pressure hole in the combination hole of the LCP plate from time to time, which affects the stability of the bone-internal fixation structure. sex, and even lead to failure of internal fixation, affecting the results of fracture treatment
In the traditional percutaneous locking screw insertion process, the locking sleeve is first used to find the locking hole for the steel plate, and then an electric drill is used to drill a hole in the cortical bone through the locking sleeve, and then the locking sleeve needs to be repassed through the fascia and musculature to find the hole. Locking hole, readjust the relationship between the locking screw and the locking hole; due to the lack of channels in this method, the screw is easy to slip out of the screwdriver during the screw insertion process, prolonging the screw insertion time and increasing the pain of the patient

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Guiding device for screw setting of minimally invasive plate osteosynthesis
  • Guiding device for screw setting of minimally invasive plate osteosynthesis
  • Guiding device for screw setting of minimally invasive plate osteosynthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] like Figure 1 to Figure 3 As shown, a minimally invasive plate osteosynthesis screw placement guide device is suitable for upper limb bone fixation (3.5mm size), including titanium alloy bone plate 1, outer sleeve 2, locking sleeve 3, and fixation sleeve 4 The bone plate 1 is provided with several combination holes, which are special-shaped holes formed by overlapping a fixing hole 11 and a locking hole 12, and the locking hole 12 is provided with an internal thread 13. The inside of the fixing hole 11 is a smooth curved surface 14 . The fixing hole 11 and the locking hole 12 are provided with rounded corners 15 adjacent to the upper and lower surfaces of the bone plate 1 .

[0027] The cross-sectional shape of the inner surface of the outer sleeve 2 corresponds to the shape of the combination hole. The locking sleeve 3 is cylindrical and includes a cylinder body 32 and a bolt head 33 located at the tail end of the cylinder body 32 . The front end of cylinder 32 is ...

Embodiment 2

[0036] like Figure 1 to Figure 3 As shown, a minimally invasive plate osteosynthesis nail placement guide device is suitable for bone fixation of lower limbs (5.0mm size), including titanium alloy bone plate 1, outer sleeve 2, locking sleeve 3, and fixing sleeve 4 The bone plate 1 is provided with several combination holes, which are special-shaped holes formed by overlapping a fixing hole 11 and a locking hole 12, and the locking hole 12 is provided with an internal thread 13. The inside of the fixing hole 11 is a smooth curved surface 14 . The fixing hole 11 and the locking hole 12 are provided with rounded corners 15 adjacent to the upper and lower surfaces of the bone plate 1 .

[0037] The cross-sectional shape of the inner surface of the outer sleeve 2 corresponds to the shape of the combination hole. The locking sleeve 3 is cylindrical and includes a cylinder body 32 and a bolt head 33 located at the tail end of the cylinder body 32 . The front end of cylinder 32 is...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The device comprises a guiding device for screw setting of a minimally invasive plate osteosynthesis, which comprises a bone plate, an outer sleeve, a hollow locking sleeve and a fixing sleeve, wherein a plurality of combined holes are arranged on the bone plate; and the cross-sectional shape of the inner surface of the outer sleeve corresponds to the combined holes. The fixing sleeve and the locking sleeve respectively correspond to the fixing hole and the locking hole in the arbitrary combined holes when the fixing sleeve and the locking sleeve are combined and contained in the outer sleevetogether. By using the method, the accuracy of the percutaneous screw setting can be increased, the working efficiency is improved, the error of the locking screw being arranged in a sliding pressurizing hole is avoided, and meanwhile, a screw setting working channel is established, and the screw setting process is optimized. Through the thread matching of the locking hole, the situation that thelocking screw is misplaced into the fixing hole is avoided. The outer sleeve of a guider can also serve as a working channel when the screw is screwed in, and the screw is prevented from sliding out.

Description

technical field [0001] The invention relates to the field of medical and surgical instruments, in particular to a minimally invasive plate osteosynthesis nail placement guide device. Background technique [0002] In minimally invasive plate osteosynthesis, it is necessary to percutaneously insert a locking screw that locks the compression plate, so as to minimize the surgical incision and reduce the damage to the soft tissue during the surgical operation. At present, only a few plates (such as the distal lateral LISS plate / LCP plate or proximal tibial lateral LISS plate / LCP plate) are equipped with standard sights, through which the screws can be placed accurately. The LCP plates in other parts lack standard collimators, and it is difficult to perform percutaneous nail placement with minimally invasive plate fixation. [0003] In the actual operation process, due to the influence of factors such as tendon tissue tension and muscle fascia tissue resistance, locking screws ar...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/90
CPCA61B17/88A61B17/90
Inventor 李颖杨俊生
Owner 李莉