Abstract
BackgroundNew surgical techniques are developed to enable a quicker, easier and safer surgery with reduced risk of complications and shortened time needed for recovery. A resorbable device, a self-locking loop, was designed for surgical ligation. The objective of this pilot study was to investigate the feasibility of ligating the spermatic cord with the device, its biocompatibility and long-term resorption in dogs.ResultsThe device was made of a block co-polymer (glycolide and trimethylene carbonate), manufactured by injection moulding and consisted of a flexible band running through a case with a locking mechanism. Ten devices were tested for ligation of the spermatic cords in five dogs admitted for routine neutering. The dogs were monitored by physical examination and ultrasonography of the site of ligation, area of spermatic cord and medial iliac lymph nodes regularly until no hyperechoic remnants of the device or acoustic shadowing or local tissue reactions were observed. Haemostasis of the spermatic cords was achieved with the devices. On ultrasonography the devices were seen as hyperechoic structures for 2 months after neutering causing acoustic shadowing for 1 month. The dogs were monitored for 3 – 5 months after surgery. Gradual decrease in echogenicity and final disappearance of the hyperechoic structures suggested resorption. Macroscopic and histological post mortem examinations were performed in one dog at 3 months after surgery. Post mortem examination showed a tissue reaction of a suture granuloma that was restricted in extent at site of the device.ConclusionsThe results of this pilot study suggest biocompatibility and indicate that ligation of the spermatic cord is feasible with the device.
Highlights
New surgical techniques are developed to enable a quicker, easier and safer surgery with reduced risk of complications and shortened time needed for recovery
To maintain the surgical advantages of traditional cable ties and avoid the problems associated to the nonresorbable material, a new resorbable self-locking device was developed to ligate blood vessels
Attention focussed on the potential use of a block co-polymer of glycolide and trimethylene carbonate (GA and TMC), equivalent to a commonly used suture [17]
Summary
New surgical techniques are developed to enable a quicker, easier and safer surgery with reduced risk of complications and shortened time needed for recovery. A resorbable device, a self-locking loop, was designed for surgical ligation. The use of cable ties (tie-raps) enables a quicker and easier ligation procedure [1,2,3,4,5]. They should not be left in situ as the non-resorbable. To maintain the surgical advantages of traditional cable ties and avoid the problems associated to the nonresorbable material, a new resorbable self-locking device was developed to ligate blood vessels. The possible use of the device for neutering of male dogs was suggested, where the appropriate ligation of the spermatic cord is important to prevent haemorrhage [22]
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