In order to realize the guide wire tele-manipulation in intervention operation, a method for guide wire motion detection with laser mouse sensor is proposed and experiments are carried out. On that basis, a guide wire tele-manipulation system which consists of guide wire detection appliance, guide wire manipulation appliance, and master slave type software is designed. Experiments are conducted on the system and acquired needed data, so that relationships between operating time and the distance from guide wire tip to destination and the angle are analyzed. The results validate the feasibility of the system and provide good foundation for future research.
Catheterization ; instrumentation ; methods ; Embolization, Therapeutic ; instrumentation ; Equipment Design ; Lasers

OBJECTIVETo study the efficiency of electrocardiogram (ECG) monitor for positioning the catheter tip in the placement of peripherally inserted central catheter (PICC) in neonates.

METHODSA total of 160 neonates who were admitted to the neonatal intensive care unit (NICU) from January 2015 to December 2017 and underwent the PICC placement via the veins of upper extremity were enrolled. They were randomly divided into an observation group and a control group, with 80 neonates in each group. The neonates in the control group were given body surface measurement and postoperative X-ray localization, while those in the observation group were given body surface measurement, ECG localization, and postoperative X-ray localization. The two groups were compared in terms of general information, one-time success rate of PICC placement, and time spent on PICC placement.

RESULTSThere were no significant differences between the two groups in sex composition, gestational age, age in days at the time of PICC placement, disease type, and site of puncture (P>0.05). Compared with the control group, the observation group had a significantly higher one-time success rate of PICC placement (95% vs 79%; P<0.05) and a significantly shorter time spent on PICC placement (P<0.05). Localization under an ECG monitor during PICC placement had a sensitivity of 97% and a specificity of 100%.

CONCLUSIONSDuring the PICC placement in neonates, the use of ECG monitor to determine the position of catheter tip can improve the one-time success rate of placement and reduce the time spent on placement.

Catheterization, Central Venous ; instrumentation ; Catheterization, Peripheral ; methods ; Catheters, Indwelling ; Electrocardiography ; instrumentation ; Female ; Humans ; Infant, Newborn ; Male

This paper gathered the problem in the Sterile Urethral Catheter(Catheterization bag)'s packaging and marking, analyzed the harmfulness and gave the improvement suggestion.
Disposable Equipment ; Product Packaging ; methods ; Urinary Catheterization ; instrumentation ; Urinary Catheters

Catheterization ; instrumentation ; methods ; Endoscopy ; Humans ; Paranasal Sinuses ; Sinusitis ; therapy

Anesthesiology ; methods ; Catheterization ; Equipment Failure ; Humans ; Infusions, Intravenous ; instrumentation ; Injections, Spinal ; instrumentation ; Needles ; Plastics

PURPOSE: Effective myocardial reperfusion after primary PCI for an AMI in lesions with a thrombus is limited by distal embolization and the slow/no reflow phenomenon. We evaluated the efficacy of a thrombus reduction technique using an export aspiration catheter for thrombosuction during primary PCI. MATERIALS AND METHODS: We analyzed 62 patients with AMIs who underwent primary PCI and had a thrombi burden during thrombosuction using an EAC (EAC group; n=31) or without thrombosuction (control group; n=31). RESULTS: Thrombosuction with an EAC was performed safely in all the patients in EAC group without any complications. After the PCI, restoration to a TIMI flow grade 3 was significantly more frequent in the EAC group (26/31 vs. 20/31, p < 0.05). However, the TIMI perfusion grade did not differ between the two groups. Further, the corrected TIMI frame counts were lower in the EAC group (23.9 ± 15.1 vs. 34.8 ± 22.5, p < 0.05). Although there was no statistical significance, a greater incidence of distal embolization was observed in the control group (16.1%, 5/31) as compared to the EAC group (0/31) (p= 0.056). However, the incidence of major adverse cardiac events at 1 and 6 months did not differ between the two groups. CONCLUSION: For AMIs, thrombosuction with an EAC before or during PCI is a safe and potentially effective method for restoration of the coronary flow.
Treatment Outcome ; Suction/instrumentation/methods ; Myocardial Infarction/*therapy ; Middle Aged ; Male ; Humans ; Coronary Disease/epidemiology ; Catheterization/instrumentation/methods ; Angioplasty, Transluminal, Percutaneous Coronary/*instrumentation/*methods ; Aged

OBJECTIVETo compare the clinical outcomes of open surgical peritoneal dialysis catheter (PDC) insertion with guide wire and the outcomes of PDC insertion without guide wire.

METHODSData of the patients receiving open surgical Tenkchoff straight catheter insertion in our department from January 2005 to January 2011 were retrospectively analyzed. The 117 patients in whom PDC insertion was conducted with the guidance of guide wire were enrolled into group A, and the 121 cases receiving PDC insertion without guide wire were enrolled into group B. The incidences of post-operative complications (catheter obstruction, catheter displacement, bloody dialysate, and dialysate leakage), catheter survival, and patient survival rates were compared between the 2 groups.

RESULTSThe baseline characteristics (gender, age, body mass index, prothrombin time, activated partial thromboplastin time, platelet count, serum creatinine, follow-up time, primary diseases, and outcomes) of the 2 groups were comparable (all P>0.05). In post-operative complications, only the incidence of early bloody dialysate showed significant difference, being 16.2% in group A and 7.4% in group B (P=0.04). Catheter and patient survival rates were not significantly different between the two groups. Overweight patients showed a higher incidence of catheter obstruction compared with normal weight patients [16.0% (4/25) vs.3.3% (7/213), P=0.02], but no differences in post-operative complications were found among overweight patients between the 2 groups.

CONCLUSIONSOpen surgical Tenkchoff straight catheter insertion without guide wire does not lead to higher risk of post-operative complications and catheter removal. It may be an alternative option when guide wire is not available.

Adult ; Aged ; Catheterization ; adverse effects ; instrumentation ; methods ; Female ; Humans ; Male ; Middle Aged ; Peritoneal Dialysis ; instrumentation ; mortality ; Postoperative Complications ; etiology

BACKGROUNDThe transradial approach is regarded as a useful vascular site for coronary procedures. The aim of this study was to test whether 4Fr catheters assisted by ACIST variable rate injector system can produce comparable angiographic quality and reduce the risk of radial artery injury compared to hand manifold 6 Fr catheters.

METHODSA total of 1816 patients were studied consecutively, among whom 856 patients received coronary angiography by 4 Fr catheters (4Fr group) and 960 patients by 6 Fr catheters (6Fr group). Angiographic and procedural characteristics were observed and recorded. The luminal inner radial arterial diameter before and after the procedure were collected.

RESULTSThe baseline clinical characteristics were similar in both groups. There were no significant differences in procedure time, radiation dose and quality scores in both groups (P > 0.05), but more contrast media was delivered in the 6Fr group (P < 0.001). The mean radial arterial diameter six months after the procedure in the 6Fr group reduced significantly compared to that measured one day prior to the procedure (P < 0.001).

CONCLUSIONSCoronary angiography using the 4Fr catheters with Acist power injection system can achieve an acceptable diagnostic quality while at the same time minimizing radial artery injury and contrast media consumption.

Aged ; Cardiac Catheterization ; instrumentation ; Coronary Angiography ; instrumentation ; methods ; Female ; Humans ; Male ; Middle Aged ; Radial Artery ; diagnostic imaging ; Ultrasonography

We report our experience in 13 patients who underwent transcatheter closure of Fontan fenestration with the Cook(R) detachable coils. These patients underwent the extracardiac type Fontan operation with a short conduit fenestration (n=7) or lateral tunnel type with a punch-hole fenestration (n=6). Fenestration closure was done at the mean age of 5.1+/-2.4 yr, average of 32 months after the Fontan operation. We used one to three coils depending on the fenestration type, size, and residual shunt. Aortic oxygen saturations increased by an average of 5.4 (2-9)% and mean pressures in the Fontan circuit increased by an average of 2.1 (0-6) mmHg. During fol-low-up (median of 23 months), five patients (4 in extracardiac, 1 in lateral tunnel) had complete occlusion of the fenestration on echocardiography. There was no immediate or late complication. Transcatheter closure of fenestration in Fontan operation using the Cook(R) detachable coil is a safe and feasible technique. However, the coil was ineffective for closure of a punch-hole fenestration in the lateral tunnel type operation. In the conduit type fenestration, some modification of fenestration method instead of a short conduit for coil closure or use of new device is necessary to increase complete closure rate.
*Prostheses and Implants ; Male ; Humans ; *Heart Catheterization ; Fontan Procedure/instrumentation/*methods ; Female ; Child, Preschool ; Child

AIMTo introduce a new device and catheter to be determining cardiac output through cor sinistrum with thermodilution.

METHODSOwn control was introduced in eight dogs. A pulmonary thermodilution catheter was used through the cor dextrum of the dogs; The new-design catheter was used through artery, and there were two situs to fix:its ahead in left atrium and the ahead near to aortic root. Determine cardiac output (CO) under four circumstances: controlled respiration, apnoea, in controlled hypotension, after controlled hypotension.

RESULTSThere was no significant difference among the parameters (CO and cardiac index) of all circumstances. The CO determined by the pulmonary thermodilution catheter and those by the new-design catheter in two situs were positive correlation, and the gamma were 0.986, 0.989; likewise, the cardiac index (CI) was positive correlation, and the gamma were 0.983, 0.985. The CO and CI by the new-design catheter between two situs were positive, and the gamma were 0.992, 0.988.

CONCLUSIONThe parameters by the new-design catheter and those by the pulmonary thermodilution catheter were concordant. In comparison with the pulmonary thermodilution catheter, the new-design catheter had simple device and could be easily operated.

Animals ; Cardiac Output ; physiology ; Catheterization, Swan-Ganz ; instrumentation ; Dogs ; Thermodilution ; methods