DORC ASSOCIATE 6000 PDF

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Nearly two decades on, it was suggested that a dual port vitreous cutter system might allow surgeons to perform bulk vitrectomy more efficiently [ 5 ]. In vitro tests demonstrate that a more predictable and consistent flow of vitreous around the instrument probe is associare using a TDC vitrectome compared with a regular vitrectome system. However, the design of new dprc dual-opening vitreous cutters effectively overcomes these initial limitations by providing for consistent flow irrespective of the cut rate used during vitrectomy surgery.

Time and flow data were analyzed using linear least squares regression analyses and two-tailed -tests. Table 2 tabulates the mean duration of core vitrectomy procedures for each surgical intervention group assessed. A principal goal in PPV is to minimize vitreous traction by removing only the target ocular tissue, without inadvertently drawing unwanted tissue into the vitrectomy probe port or creating distant traction that might cause iatrogenic retinal tears or other complications.

References made in article may indicate usage of medical equipment or drugs at dosages, for periods of time, and in combination not included in the current associats information. To receive news and publication updates for Journal of Ophthalmology, enter your email address in the box below. Introduction The general principle of pars plana vitrectomy PPV surgery is to ensure complete vitreous removal with no residual vitreous left following the procedure.

Faster operating times offer the potential of reduced costs as well quicker postoperative rehabilitation [ 14 ]. View at Google Scholar F. Popular: Eckardt End-Gripping Forceps We evaluated overall vitrectomy cutting time in seconds required to remove core vitreous in 80 patients diagnosed with macular pucker as part of a comparative evaluation of flow and operating duration using a TDC vitrectome and former standard single-cut vitrectome design gauge and gauge systems, DORC during core vitrectomy procedures.

The second cutting movement is realized through cooperation of the distal cutting edge of the inner part with the proximal cutting edge of the outer part. A prospective single-centre clinical study evaluated duration of core vitrectomy in 80 patients with macular pucker undergoing gauge or gauge vitrectomy using either a TDC vitrectome at 16, cuts per minute cpm or standard single-cut vitrectome, combined with a Valve Timing intelligence VTi pump system EVA, DORC International.

The general principle of pars plana vitrectomy PPV surgery is to ensure complete vitreous removal with no residual vitreous left following the procedure. Associate Dual from Dutch Ophthalmic, USA — Product Description and Details The principal advantages of this novel guillotine sleeve design included a doubling of cut rate, increased flow, and potentially decreased retinal traction or force exerted by the probe. Performance of the new generation gauge corc gauge TDC vitrectomes was analyzed relative to the current generation or standard gauge and gauge cutter.

Developments in vitrectomy probe technology have accelerated in recent years, designed to improve intraoperative surgical control and allow quick core vitrectomy bulk vitreous removal and tractionless controlled vitreous shaving. Vitrectomy surgery using a TDC vitrectome resulted in faster core vitrectomy, a finding that was consistent across both gauge and gauge instrumentation surgery groups.

The degree of retinal traction created by vitrectomy cutters is influenced by the effect of time of aspiration, distance from the retina, and cutting rate.

A first cutting movement occurs by cooperation of the distal end of the inner part with the distal cutting edge of the outer part. This necessitates higher infusion and aspiration pressures to remove vitreous when using smaller-gauge vitrectomes. Fluidic stability and control during vitrectomy is essential. Company Information Contact the company for additional information, availability, or pricing: The idea involved inclusion of an opening in the internal guillotine pipe dor inner vitrectome sleeve.

Early gauge vitrectomy systems were marked by reduced fluid flow and longer vitrectomy duration compared with gauge systems [ 9 ].

In the author in cooperation with DORC International developed a newer vitrectome design, introducing a modified vitreous cutter technology called two-dimensional cutting TDC vitrectome system, launched in conjunction with the EVA ophthalmic surgical platform, a new aspiration system designed to provide both flow and vacuum control mode vitrectomy for enhanced intraoperative fluidics stability. There is undoubtedly a surgical learning curve involved in mastering the technique of using small-gauge vitrectomy instruments, typically involving the first 20 or so cases.

Owing to the increased cutting and snipping capacity, the surgical intervention can be shortened and, moreover, the traction exerted on the ocular tissue drawn associat during the aspiration phase decreases while the suction flow increases.

Indexed in Science Citation Index Expanded. The inner tube has been designed with a rectangular aperture for increased and continuous flow functionality. The axial position of the distal cutting edge of the inner part as a function of the circumferential direction initially proceeds towards the proximal end and then back to the distal end again. When the classic gauge vitrectome was connected to the Associate system, aspiration asspciate rate decreased from 1.

To evaluate comparative aspiration flow performance and also assoicate operating time efficiency using a double-cutting open port vitreous cutting system incorporated in a two-dimensional cutting TDC, DORC International vitrectome design versus standard vitreous cutter. At-a-Glance Dual system, phaco and vitrectomy Twin pump system, peristaltic and venturi Programmable dual linear footswitch.

Max Vaccum Not specified. Associate Patients with a diagnosis at baseline of glaucoma, asteroid hyalosis, acute or chronic dorrc, or trauma were excluded. Aspiration flow rates remained constant independent of TDC vitrectome cut rate, while flow rates decreased linearly at higher cutter speeds using a classic single-blade vitrectome. Future follow-up studies might usefully evaluate postoperative visual, anatomic, and safety outcomes.

During a cycle in which the inner part performs a back-and-forth movement in the outer part, a cutting movement occurs twice. Most Related.

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Initially, these tests were performed with water. The general principle of pars plana vitrectomy PPV surgery is to ensure complete vitreous removal with no residual vitreous left following the procedure. Max Cut Speed cpm. However, the design of new generation dual-opening vitreous cutters effectively overcomes these initial limitations by providing for consistent flow irrespective of the cut rate used during vitrectomy surgery. Introduction The general principle of pars plana vitrectomy PPV surgery is to ensure complete vitreous removal with no residual vitreous left following the procedure. Time associatw of core vitrectomy duration was made by a secondary person without a need to change standard vitrectomy procedures of PPV for epiretinal membrane removal. When the vacuum level was constant, the weight reduction of the fluid in the cup was measured and the aspiration flow calculated by dividing the weight reduction by the time elapsed.

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DORC ASSOCIATE 6000 PDF

Nearly two decades on, it was suggested that a dual port vitreous cutter system might allow surgeons to perform bulk vitrectomy more efficiently [ 5 ]. In vitro tests demonstrate that a more predictable and consistent flow of vitreous around the instrument probe is associare using a TDC vitrectome compared with a regular vitrectome system. However, the design of new dprc dual-opening vitreous cutters effectively overcomes these initial limitations by providing for consistent flow irrespective of the cut rate used during vitrectomy surgery. Time and flow data were analyzed using linear least squares regression analyses and two-tailed -tests. Table 2 tabulates the mean duration of core vitrectomy procedures for each surgical intervention group assessed. A principal goal in PPV is to minimize vitreous traction by removing only the target ocular tissue, without inadvertently drawing unwanted tissue into the vitrectomy probe port or creating distant traction that might cause iatrogenic retinal tears or other complications.

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