Device for occlusion of patent ductus arteriosus

 

(57) Abstract:

Usage: in cardiac surgery. The inventive frame element 1 is connected to the locking arc 4 working cores 2 and 3 are executed in parallel and mounted opposite each other at a distance of 0.5 - 0.7 mm, while the entire device is made of titanium nickelide. 1 Il.

The invention relates to medicine and can be used in surgery for operations on patent ductus arteriosus.

Currently, for occlusion of patent ductus arteriosus (PDA) is most often used ligation of the vessel two ligatures in pulmonary and arterial ends.

It is also known a device for mechanical mnogotonazhnogo seam used for occlusion of the PDA in the form of direct shear metal staples.

However, when using it disrupted the integrity of the vascular wall, as well as the need arises wide selection RFP from the surrounding tissue in the area of passage of the main vascular and nerve trunks, which increases the operating injury.

The purpose of the invention decrease the morbidity of the operation by increasing the reliability of the fastening device on the vessel.

The device is used as follows.

Dissecting the medial pleura, reveal the scope of the RFP. Under the rear wall of the duct, make two point tunnel at the aortic and pulmonary ends of the duct. The device is cooled to 0aboutWith ice-cold saline solution. Additional rods 3 hand movement away at an angle of 45-60abouton the main rod 2. This angle is sufficient to make additional cores 3 through pre-made tunnels under the cap. The pick up device so that the frame element 1 coincide in length with the cap and located between the aorta and pulmonary artery. By warming temperatures OK the element 1 move towards additional rods 3, until the establishment of the distance between terminals 0,5-0,7 mm Locking arc 4 covers the tangent edge of the occluded duct, completing the fixation device.

Execution frame element, respectively, the length of the PDA provides reliable fixation of the device in longitudinal section on an open arterial duct between the aorta and pulmonary artery. The main terminals are equipped with locking arc, thus avoiding lateral displacement of the device, perpendicular to the longitudinal cross-section of the RFP. The introduction of an additional unit of rods, arranged parallel to the main, allows you to override the cap without damaging the integrity of the vascular wall. The distance between the primary and secondary rods, 0.5-0.7 mm, corresponds to twice the wall thickness of the cap and prevents the device "razmozzhit" the wall of the duct. Additional rods not supplied with the frame element, and to summarize them under the rear wall of the RFP does not require a wide selection of the latest from the surrounding tissue, which significantly reduces the invasiveness of the surgery. The device of the alloy on the basis of nickelide titanium with a transition temperature close to the temperature of the human body, i.e., cloud effort and without special tools, that simplifies the operation and reduces the trauma.

The invention compared with the known structures used for occlusion of the PDA increases the reliability of the fastening device on the vessel, which significantly reduces operating injury. The simple design makes the surgery and the surgeon.

DEVICE FOR occlusion of patent ductus arteriosus containing frame element and located in parallel planes working parts in the form of two pairs installed in parallel planes primary and secondary terminals, and each pair is connected to a frame element of the locking arc placed at the end of the main rod, characterized in that, to reduce the morbidity by increasing the reliability of the fastening device on the vessel, the frame element is made with a length under Preimenuj vessel, and the primary and secondary cores are made parallel and mounted opposite each other at a distance of 0.5 - 0.7 mm, and the frame element, fixing the arc and the working parts are made of titanium nickelide with a transition temperature close to the temperature of the human body.

 

Same patents:
The invention relates to methods of surgical treatment of heart diseases

The invention relates to medicine, namely to vascular neurosurgery, and can be used in the treatment of occlusive lesions of the vertebral artery

The invention relates to medicine, namely to endovascular surgery and can be used for artificial embolization pathological afferent vascular malformations, particularly in neurosurgery

The invention relates to medical engineering, in particular to devices for the treatment of paranasal sinuses in otolaryngology

The invention relates to the field of cold metal forming, in particular to methods of cold plastic deformation, and can find application in the manufacture of cutting and crimping tools in medical tool industry

The invention relates to medicine, more specifically to the surgery
The invention relates to surgery

Hepatology // 2019142
The invention relates to medicine, in particular for liver surgery, and can be used to provide temporary hemostasis

The invention relates to medical equipment, namely, devices for isolating damaged sections of the human body from external influences with hemostatic effect

FIELD: medical engineering.

SUBSTANCE: device has elongated body having operation end engageable with ligature loop, lateral slit for ligature to exit and movable rod, mounted in the device body, having operation end for holding the ligature. The elongated body has special purpose design to match endosurgical port or trocar lumen. The rod is spring-loaded and has nonworking end projecting from the device body as handle. The rod operation end is hook arranged in front of the lateral slit for ligature to exit and making displacement at a distance minimum equal to distance from operation body end to end face of slit for ligature to exit, oriented towards the handle.

EFFECT: improved tissue and organ engagement conditions; simplified maintenance procedure; accelerated operation process.

3 cl, 2 dwg

FIELD: medicine.

SUBSTANCE: method involves applying surgical intervention and antitumor therapy. After having removed a part or the whole lung, mediastinum is opened by cutting out horseshoe-shaped or rectangular flap of mediastinal pleura and carrying out lymphodissection. Then, hemostatic sponge is placed in mediastinum. The sponge is impregnated with antitumor chemotherapeutical preparations in intraoperative mode. Pleura is sutured above the sponge. Another hemostatic sponge impregnated with cytostatic preparations in intraoperative mode is attached to visceral pleura of interlobular sulcus.

EFFECT: prolonged chemotherapeutical preparations delivery to malignant neoplasm foci or subclinical metastases.

FIELD: medical engineering.

SUBSTANCE: device has two branches with rack and pinion and lips. The lips are curved in a plane and have longitudinal cuts on the ends. Ligature placed in grooves on branch edges is introduced into the cuts. The ligature is introduced into the cuts to enable one to catch tissue under the instrument when being applied. Ligature ends are arranged in a way allowing their release from the grooves for being tightened.

EFFECT: avoided slipping off when applying and tightening ligature; producing high quality hemostasis.

3 dwg

FIELD: medicine.

SUBSTANCE: method involves applying tampon having injector drains between its layers near bleeding focus and napkin possessing enhanced absorbing properties. The tampon is surrounded with biologically inactive polyethylene envelope.

EFFECT: increased local hemostatic effect; reduced abdominal cavity response; improved draining properties.

1 dwg

FIELD: medical engineering.

SUBSTANCE: device has 150 cm long rubber double-lumen tube, hemostatic balloon placed 3.0-3.5 cm from the beginning of the rubber tube, holes in anterior and posterior portion of the hemostatic balloon and metal olive placed at the probe end. Marks are available on the probe at 45, 70 and 80 cm from its beginning.

EFFECT: no special equipment required for setting the device; available features for determining probe position; enabled X-ray control.

1 dwg

FIELD: medicine, cardio-vascular surgery.

SUBSTANCE: one should introduce three trocars into patient's thorax, perform videoendosurgical isolation of anterior, superior and inferior ductal walls followed by squeezing the duct with clips. After isolating anterior, superior and inferior ductal walls one should measure external diameter of its narrowest part and match a clip in accordance with the ratio of clips' sizes to external diameter of a vessel. At this ratio, external diameter of the vessel of 3.0 mm corresponds to clips of 5.0 mm and 6.0 mm in closed state, in case of external diameter of vessels being 3.5 mm, 4.0 mm and 5.0 mm one should match clips of 8.7 mm and 9.0 mm length, and at vessels' diameter being 5.5 mm and 6.0 mm it is necessary to take clips of 12.0 mm length. To perform clipping one should substitute instrumental trocar for that for clip-applicator in the desired point. As a result, it is possible to decrease traumaticity of operative interference, decrease cases of intraoperational hemorrhages and lesion of recurring-laryngeal nerve, save residual circulation or renew it along opened arterial duct.

EFFECT: higher efficiency.

1 cl, 1 ex, 1 tbl

FIELD: medicine, surgery, oncology.

SUBSTANCE: one should ligate patient's superior pulmonary vein, suture superior lobar bronchus, mobilize left pulmonary artery near pericardium and inferior lobar artery in interlobar fissure, perform patient's total heparinization, temporarily clip the mobilized section, dissect that of left pulmonary artery and remove it together with the superior lobe. Integrity of left pulmonary should be restored with a coniform prosthesis and "end-to-end" anastomosis. Then clips should be removed to restore circulation. The method enables to save patient's inferior pulmonary lobe.

EFFECT: higher efficiency of superior lobectomy.

1 dwg

FIELD: medicine, surgery, oncology.

SUBSTANCE: one should ligate superior pulmonary vein, suture superior lobar bronchus, mobilize and temporarily clip left-hand pulmonary artery near pericardium and the section of inferior lobar artery in interlobar fissure and remove together with mobilized superior pulmonary lobe. Integrity should be restored with a fragment cut out of pericardium in the form of a truncated pyramid, its length being equal to that of resected arterial part, its bottom being equal to the length of circumference of resected arterial part, the top is equal to circumference length of resected arterial part. This fragment should be rolled up into conical tube, its free sides should be sutured with atraumatic suture. One should anastomose the conical transplant with resected parts by "end-to-end" technique. The method enables to keep inferior lobe of left-hand lung.

EFFECT: higher convenience during operation.

2 dwg

FIELD: medicine, surgery, oncology.

SUBSTANCE: one should ligate segmental arterial trunks, carry out patient's heparinization, tighten pulmonary vein beforehand, temporarily clip left pulmonary artery near pericardium and inferior lobar artery. Moreover, one should ligate proximal departments of segmental arterial trunks only coming towards the superior lobe. The method enables to completely stop arterial circulation.

EFFECT: higher efficiency.

1 dwg

FIELD: medicine, oncology, surgery.

SUBSTANCE: one should tighten superior pulmonary vein, suture super lobar bronchus, isolate left pulmonary artery near pericardium and artery of inferior lobe. After preliminary total heparinization one should clip the vessels isolated. Superior pulmonary lobe should be removed with the tumor and part of left pulmonary artery not far from clipping line. Then one should resect the part of the great subcutaneous vein, anastomose a venous transplant with remained part of left pulmonary artery and that of inferior lobe by "end-to-end" technique. Clips should be removed to restore circulation. The method enables to save inferior lobe of patient's left lung.

EFFECT: higher efficiency.

1 dwg

Up!