Background
Currently, common solid or flexible dilators or braided stents are used to secure and dilate entrances into body cavities (pleural and abdominal), necrotic and infected cavities in the retroperitoneum or into hollow organs through the body surface. The disadvantage of such procedures is the possibility of damaging surrounding tissues and the risk of deformation of the created channel due to the thick subcutaneous layer and muscle during the insertion of the dilator. With braided stents supplemented with dilation balloons, it is very problematic to achieve an uniformly dilated channel and to remove the braided stent due to possible tissue ingrowth and adhesion of the stent to the surroundings. The disadvantage of braided stents is also their high price.
Descricption of the Invention
The aim of the invention is to dilate narrow channels that arise after the standard insertion of thin drains into a cavity, hollow organ, or pathological area. The insertion is often done under ultrasound or X-ray control. The newly developed dilatation system is designed to allow the expansion of the channel through which the thin drain is inserted. The uniqueness of the new system lies in the designed dilator set that allows a larger diameter dilator to be inserted into a smaller diameter dilator. This procedure is repeated until a desired width of the channel is achieved. Thus, the channel gradually and gently expands and eventually allows the insertion of thicker drain. The new method of dilation reduces damage to surrounding tissues that might be caused by dilation. The depth of the inserted dilator is determined by a fixation device (fixation ring), which can be used to safely set the depth of the dilated channel.
Advantages and Potential Application
The invention is primarily intended for the insertion of thicker drains in patients with infectious and necrotic deposits in the abdominal cavity, retroperitoneum, or chest cavity. However, it is also suitable for dilating entrances to hollow organs (trachea, stomach, uterus, urinary system). It can also be used during laparoscopic procedures.
Technology is owned by University Hospital Hradec Králové. Czech patent application filed (priority date 7. 12. 2022). 3D printed set of dilators were tested in vivo in pig model, where all the expected benefits were confirmed by the clinician. The development was supported by the Technology Agency of the Czech Republic within the programme for applied research, experimental development and InnovationGAMA 2 –Project TP01010034 – Centre for Transfer of Biomedical Technologies – PoC2. Now we are searching for commercial partner that would bring our device to the market.
University Hospital Hradec Králové is now one of the largest medical facilities not only in Eastern Bohemia but also throughout the Czech Republic. It is a state-of-the-art facility spanning a wide range of medical fields and serves as a catchment center for approximately 1,000,000 inhabitants from all over the Czech Republic.
More than 41,000 patients are hospitalized every year at the hospital’s 39 workplaces, which include 24 departments and over 1370 beds, with approximately 715,000 outpatients treated annually. The most complex surgical procedures are performed and modern diagnostic and treatment technologies are used. This makes University Hospital Hradec Králové comparable with similar hospitals in Europe.
University Hospital is an important research and educational institution closely connected with the Faculty of Medicine in Hradec Králové.
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