Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Direct suspension and fixing device for soft material tissue implant

A technology of tissue grafts and fixation devices, applied in the direction of muscles, ligaments, etc., can solve problems such as ligament loosening, bone tunnel enlargement, and joint instability, and achieve the effect of convenient operation, simple structure, and avoiding the wiper effect

Active Publication Date: 2018-11-20
SHANGHAI LIGETAI BIOTECH CO LTD
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the coil length of the suspension fixation device is fixed, the femoral tunnel will also produce a cavity with a length of about 6mm, and the graft will have a pendulum effect and a bungee effect, which will cause a series of problems, such as enlarged bone tunnel, hindering the bone tunnel and grafting material healing, ligament loosening, joint instability, etc.
In short, the existing suspension fixation method of the femoral end has many disadvantages, such as the graft does not fully contact the bone tunnel, which is not conducive to the healing of the graft and the bone tunnel, and affects the treatment effect; there will be a pendulum effect and a bungee effect, resulting in a series of question

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
  • Direct suspension and fixing device for soft material tissue implant
  • Direct suspension and fixing device for soft material tissue implant
  • Direct suspension and fixing device for soft material tissue implant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0062] like image 3 Shown, the knee joint has tissue grafts that can be implanted in cruciate ligament (ACL) reconstruction and repair surgery, eg patellar tendon graft, hamstring tendon graft. Take a graft, measure the length, fold it into 4 strands, and place it on the pretensioner. After a certain tensile force, pass the transplanted tendon through the suspension line 2, and suture the two ends of the 4 strands of tendon with medical sutures. About 8cm, diameter 8-9mm.

[0063] A tibial tunnel is then drilled into the tibia at a predetermined angle and distance to place the tibial graft; a femoral tunnel is also drilled at a predetermined angle and distance to place the femoral graft. The femoral tunnel was made the same diameter to accommodate thicker tendon grafts.

[0064] Connect the traction wire 31 and the turning wire 32 to the threader and pull it out from bottom to top through the outer opening of the tibial tunnel-the inner opening of the tibial tunnel-the inne...

Embodiment approach 2

[0066] The patient is positioned supine and anesthetized. First, a longitudinal incision about 2 cm long is made downward from the place 4 cm below the tibial plateau and 2 cm inside the tibial tuberosity of the affected knee to expose the insertion point of the semitendinosus and gracilis of the foot of the goosefoot, and cut off the periosteum together. After freeing part of the semitendinosus and gracilis muscle insertions, the tendon was cut off with a tendon stripper and trimmed into a tendon bundle with a length of 14-18 cm. The attached muscle and excess fascia on the tendon were removed, and the transplanted tendon was inserted into the graft. Inside the object suspension thread 2, weave it with tendon suture and fold it into 4 strands, pre-tension and stretch for 5 minutes, and set aside.

[0067] Create a bone tunnel. The tibial insertion point of the reconstructed tendon is at the midpoint of the line between the anterior medial bundle and the posterolateral bundle...

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 invention provides a direct suspension and fixing device for a soft material tissue implant. The device comprises a fixing piece, a suspension line, and a guiding line, wherein threading holes areformed in the fixing piece; and the suspension line and the guiding line penetrate the corresponding threading holes and are connected with the fixing piece. The device provided by the invention hasthe advantages that the whole femoral tunnel can be fully filled with the implant, so that the implant and the bone tunnel can be healed as quickly as possible.

Description

[0001] This application is a divisional application of the following original application: [0002] --The filing date of the original application: May 12, 2017 [0003] --Application number of the original application: 201710338642.6 [0004] --Invention-creation name of the original application: soft material tissue graft direct suspension fixation device technical field [0005] The invention relates to a medical device, in particular to a soft material tissue graft direct suspension and fixation device. Background technique [0006] The anterior cruciate ligament is a soft tissue ligament used to flexibly connect the tibia and femur in the human knee joint, and play a role in maintaining joint stability and coordinating joint movement. The self-repair ability of the anterior cruciate ligament is poor, and early reconstruction under arthroscopy is the main treatment. The current grafts include autografts, allografts and artificial ligament grafts. During reconstruction...

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): A61F2/08
CPCA61F2/0811A61F2002/0817A61F2002/0858A61F2002/0882
Inventor 霍红亚
Owner SHANGHAI LIGETAI BIOTECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com