Foreign Bodies ; surgery ; Humans ; Oropharynx ; Punctures ; methods ; Ultrasonography

PURPOSE: The purpose of this study was to compare the effect of recirculation rate according to cannulation direction and interval among hemodialysis patients with arteriovenous fistula (AVF).METHOD: The research used repeated measures design. This study was conducted among thirty patients who received hemodialysis three times a week for longer than a year through AVF at the I University hospital. Three different types of interventions were administered to the participants each week for three weeks. Needles were placed at a different distance and in a different direction each week: 7 cm apart from each other in antegrade direction during the first week, 5 cm apart in retrograde direction in the following week, and 7 cm apart in retrograde direction in the third week.RESULTS: No significant differences in the recirculation rate were found due to any of the three tested methods (p = 1.00).CONCLUSION: This finding suggests that, if the patients have well-functioned AVF, we can choose an appropriate intervention from among the three methods in consideration of the patient's diverse needs.
Arteriovenous Fistula ; Catheterization ; Humans ; Methods ; Needles ; Punctures ; Renal Dialysis

Deep venipuncture catheterization is a routine and basic operation in the treatment of critically ill patients, and it is the most effective way to quickly correct the shock. Clinical B-ultrasound guided deep vein catheters can improve the success rate of puncture, but in the process of operation, the short axis needs to be replaced by the long axis. In the replacement process, the stability of the novice is insufficient, the positioning is difficult, and the operation time is too long. If only short axis puncture is used, it is impossible to know whether the current position of the puncture needle, and the puncture may be too deep and stray into the artery. The accuracy of the 45 degree angle of the injection point requires a very experienced operator. In view of the above shortcomings, doctors in the department of critical care medicine of Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine designed a B-ultrasound puncture equipment, which has obtained the National Invention Patent of China (ZL 2016 1 0571557.X). The device is composed of B-ultrasound probe fixing frame, sliding scale plate, simulation slide rule, puncture needle, sliding device. By sliding device the angle of the pinhole channel, it is conducive to the accurate positioning of the puncture target, optimizing the operation procedure, improving the puncture speed and accuracy, effectively reducing the occurrence of puncture complications, ensuring patient safety, reducing unnecessary waste of human and material resources. It can reduce the workload of medical staff and is worthy of clinical practice.
Humans ; Catheterization, Central Venous/methods* ; Ultrasonography, Interventional/methods* ; Ultrasonography ; Punctures/methods* ; Needles

Soft tissue is one kind of elastic tissue which includes the blood vessel and nerve, and brachytherapy is a radioactive and non-invasive way for the treatment of cancer in which soft tissue is always deformed. Aiming at this soft tissue-induced-problem, the present authors have made a research on the trajectory planning in operation. The 3D artificial potential field of organ is set up by the function definition of cancer attracting force and blood vessel repulsion force, the dynamic finite element model is also built for the important displacement parameters of deformation node in needle invasion process. Moreover, the minimum potential direction in each node, and the static and dynamic trajectory planning are investigated. Finally, the experimental simulation shows the validation and correctness of the above-mentioned method.
Brachytherapy ; methods ; Computer Simulation ; Connective Tissue ; physiology ; Elasticity ; Hardness ; Humans ; Needles ; Punctures ; methods

Revascularizations of 14 occlusive arterial diseases in the lower extremities with the Transluminal Endarterectomy Catheter was done successfully. The causes of occlusions were atherosclerosis in 9 cases and cardiogenic thromboembolism in 5 cases. The site of lesions were at the common femoral artery in 1 case, the superficial femoral artery in 6 cases and the popliteal artery in 7 cases. The length of the lesion were below 5cm(n=3), 5-10cm(n=2), 11-20cm(n=6) and 21-30cm(n=3). Complications were distal embolism(n=1) and hematoma at the puncture site(n=1). No symptoms recurred in any cases during 2 months -15 months followup. Endarterectomy with Transluminal Endarterectomy Catheter was found to be an effective method for revasculizations of occlusive arterial disease in the lower extremity, especially in long segmental occlusion.
Atherosclerosis ; Catheters ; Endarterectomy* ; Femoral Artery ; Follow-Up Studies ; Hematoma ; Lower Extremity* ; Methods ; Popliteal Artery ; Punctures ; Thromboembolism

From March 1987 to July 1989, six patients (five dadults and one child) with lung abscess (size, 5-13cm in diameter) were treated with percutaneous aspiration and drainage. In each case, the puncture was made where the wall of the abscess was in contact with the pleural surface. An 8 to 10 Fr catheter was inserted for drainage. Five of 6 had a dramatic clinical response within 24 hours of the drainage. Percutaneous drainage was successful with complete abscess resolution in four and partial resolution in one patient. No response was seen in the rest one. The duration of drainage ranged from 7 to 18 days (average, 15.5days) in successful cases. One case of the failure in drainage was due to persistent aspiration of the neurologically impaired patient. In one patient, the abscess resolved after drainage but recurred after inadvertent removal of the catheter 7 days after insertion. In two patients, concurrent pleural empyema was resolved completely by the drainage. Computed tomography provided anatomic details necessary for choosing the puncture site and avoiding a puncture of the lung parenchyma. Percutaneous catheter drainage is a safe and effective method for treating patients with lung abscess.
Abscess ; Catheters* ; Drainage* ; Empyema, Pleural ; Humans ; Lung Abscess* ; Lung* ; Methods ; Punctures

OBJECTIVETo evaluate a new puncture needle with multiple holes (National Invention Patent of China: ZL 2010202466554) in testicular sperm extraction for infertile males.

METHODSThis study included 215 azoospermia patients, who underwent testicular sperm extraction with a new puncture needle with multiple holes (group A, n = 133), by open biopsy (group B, n = 37), or with a fine needle (group C, n = 45).

RESULTSThe first-time success rate was 100% in group A, 19% in B and 100% in C. The average operation time was obviously shorter in group A ([3 +/- 1] min) than in B ([15 +/- 3] min) and C ([7 +/- 2] min). The rate of postoperative complications was 3.0% in group A, significantly lower than in B (21.6%) and C (11.1%).

CONCLUSIONThe new puncture needle with multiple holes, with its advantages of accuracy, high first-time success rate, minimal invasiveness and low rate of complications, deserves to be generally applied in testicular sperm extraction.

Adult ; Biopsy ; instrumentation ; methods ; Humans ; Infertility, Male ; therapy ; Male ; Needles ; Punctures ; Sperm Retrieval ; Testis ; Young Adult

The characteristics of Japanese collateral puncture are expounded from history evolution and technical feature. The position of pricking blood and blood-letting volume for the three Japanese collateral puncture, Japanese collateral puncture at Jing-well points, at fine collaterals and at the skin are emphatically discussed and briefly compared with Chinese pricking blood therapy, so as to better develop the collateral puncture therapy.
Acupuncture Points ; Humans ; Japan ; Medicine, East Asian Traditional ; Meridians ; Phlebotomy ; methods ; Punctures

OBJECTIVE: To evaluate the safety and efficacy of the coil-protected technique for liquid embolization in neurovascular malformations. MATERIALS AND METHODS: Twenty-two patients who underwent coil-protected liquid embolization for symptomatic cranial (n = 13) and spinal (n = 9) arteriovenous fistula (AVF) or arteriovenous malformations (AVMs) were identified. A total of 36 target feeder vessels were embolized with N-butyl cyanoacrylate and/or Onyx (Medtronic). This technique was used to promote delivery of a sufficient amount of liquid embolic agent into the target shunt or nidus in cases where tortuous feeding arteries preclude a microcatheter wedging techniqu and/or to prevent reflux of the liquid embolic agent in cases with a short safety margin. The procedure was considered technically successful if the target lesion was sufficiently filled with liquid embolic agent without unintentional reflux. Angiographic and clinical outcomes were retrospectively evaluated. RESULTS: Technical success was achieved for all 36 target feeders. Post-embolization angiographies revealed complete occlusion in 16 patients and near-complete and partial occlusion in three patients each. There were no treatment-related complications. Of the six patients who showed near-complete or partial occlusion, five received additional treatments: two received stereotactic radiosurgery for cerebral AVM, two underwent surgical removal of cerebral AVM, and one underwent additional embolization by direct puncture for a mandibular AVM. Finally, all patients showed complete (n = 19) or near-complete (n = 3) occlusion of the target AVF or AVM on follow-up angiographies. The presenting neurological symptoms improved completely in 15 patients (68.2%) and partially in seven patients (31.8%). CONCLUSION: The coil-protected technique is a safe and effective method for liquid embolization, especially in patients with various neurovascular shunts or malformations who could not be successfully treated with conventional techniques.
Angiography ; Arteries ; Arteriovenous Fistula ; Arteriovenous Malformations ; Cyanoacrylates ; Follow-Up Studies ; Humans ; Methods ; Punctures ; Radiosurgery ; Retrospective Studies

Equipment Design ; Humans ; Needles ; standards ; Paracentesis ; instrumentation ; methods ; Pleural Effusion ; therapy ; Pneumothorax ; therapy ; Punctures ; instrumentation ; methods ; Treatment Outcome