18-month results of double-flanged 5-0 polypropylene suture transscleral bag fixation in subluxated cataracts

Canabrava, Sérgio; Rodrigues, Gustavo; Halabi, Natan Namem; Rezende, Ana Clara; Cardoso, Mayara

doi:10.5935/0004-2749.20230022

Cited by 3 publications

(2 citation statements)

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“…All patients had undergone the conventional double-flanged technique with CTS, 4-flanged technique with nonfoldable IOL, or 4-flanged technique with foldable IOL that has been elaborated in previous reports. 8,9,13 The following provides a brief summary of the techniques used:…”

Section: Methodsmentioning

confidence: 99%

Double-flanged polypropylene technique: 5-year results

Canabrava

Carvalho

2023

J Cataract Refract Surg

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Section: Methodsmentioning

confidence: 99%

Double-flanged polypropylene technique: 5-year results

Canabrava

Carvalho

2023

J Cataract Refract Surg

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“…However, a grasp assisted prominent conic shape of the PMMA haptic according to intuitive thinking offers easier slip of the flange into the scleral tunnel and a good seal immediately after burial of the flange into the scleral tunnel. While mid-term flange stability, reported in the literature [ 13 ], results also from the fibrotic sclera response. Further studies are needed to assess the sealing properties of differently shaped flanges.…”

Section: Discussionmentioning

confidence: 99%

Dislocation force of scleral flange-fixated intraocular lens haptics

Stunf Pukl,

Kronschläger,

Ruiss

et al. 2024

BMC Ophthalmol

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Purpose To measure the dislocation forces in relation to haptic material, flange size and needle used. Setting Hanusch Hospital, Vienna, Austria. Design Laboratory Investigation. Methods, main outcome measures 30 G (gauge) thin wall and 27 G standard needles were used for a 2 mm tangential scleral tunnel in combination with different PVDF (polyvinylidene fluoride) and PMMA (polymethylmethacrylate haptics). Flanges were created by heating 1 mm of the haptic end, non-forceps assisted in PVDF and forceps assisted in PMMA haptics. The dislocation force was measured in non-preserved cadaver sclera using a tensiometer device. Results PVDF flanges achieved were of a mushroom-like shape and PMMA flanges were of a conic shape. For 30 G needle tunnels the dislocation forces for PVDF and PMMA haptic flanges were 1.58 ± 0.68 N (n = 10) and 0.70 ± 0.14 N (n = 9) (p = 0.003) respectively. For 27 G needle tunnels the dislocation forces for PVDF and PMMA haptic flanges were 0.31 ± 0.35 N (n = 3) and 0.0 N (n = 4), respectively. The flange size correlated with the occurring dislocation force in experiments with 30 G needle tunnels (r = 0.92), when flanges were bigger than 384 micrometres. Conclusions The highest dislocation forces were found for PVDF haptic flanges and their characteristic mushroom-like shape for 30 G thin wall needle scleral tunnels. Forceps assisted flange creation in PMMA haptics did not compensate the disadvantage of PMMA haptics with their characteristic conic shape flange.

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Drug-Eluting Sutures by Hot-Melt Extrusion: Current Trends and Future Potentials

Khalid,

Billa

2023

Materials

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Surgical site infections (SSIs) may result from surgical procedures requiring a secondary administration of drugs at site or systemically in treating the infection. Drug-eluting sutures containing antimicrobial agents symbolise a latent strategy that precludes a secondary drug administration. It also offers the possibility of delivering a myriad of therapeutic agents to a localised wound site to effect analgesia, anti-inflammation, or the deployment of proteins useful for wound healing. Further, the use of biodegradable drug-eluting sutures eliminates the need for implanting foreign material into the wound, which needs to be removed after healing. In this review, we expound on recent trends in the manufacture of drug-eluting sutures with a focus on the hot-melt extrusion (HME) technique. HME provides a solvent-free, continuous one-step manufacturing conduit for drug-eluting sutures, hence, there is no drying step, which can be detrimental to the drug or suture threads and, thus, environmentally friendly. There is the possibility of combining the technology with additive manufacturing platforms to generate personalised drug-loaded implantable devices through prototyping and scalability. The review also highlights key material requirements for fabricating drug-eluting sutures by HME, as well as quality attributes. Finally, a preview of emerging drug-eluting sutures and advocacy for harmonisation of quality assurance by regulatory authorities that permits quality evaluation of novelty sutures is presented.

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18-month results of double-flanged 5-0 polypropylene suture transscleral bag fixation in subluxated cataracts

Cited by 3 publications

References 0 publications

Double-flanged polypropylene technique: 5-year results

Double-flanged polypropylene technique: 5-year results

Dislocation force of scleral flange-fixated intraocular lens haptics

Drug-Eluting Sutures by Hot-Melt Extrusion: Current Trends and Future Potentials

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