In this paper, one kind of suction apparatus is introduced, which could use manual, foot control and control combination. The design mentality, realization method, installation constitution and application method are also described. It is suitable to the nonmotile source condition and transportation situation, adapting easily to environment, and getting into favour with the medical staff and field first-aid personnel.
Equipment Design ; Suction ; instrumentation

A generally realized phenomenon in the suction experiment of cells is that if the aspiration pressure is larger than a certain threshold, cell flows continuously into the pipette. The point of the threshold aspiration pressure at which the cell can still be held in a stable equilibrium is called the critical point of aspiration. Here we represent a theoretical analysis of the equilibrium behavior and stability of cell by liquid drop model. In the method of analysis, the areal change due to a small movement deltaL of the portion of the membrane in pipette is given to the first approximation. The threshold pressure and the critical point are shown as simple formulas of the model parameters and inner relative radius of pipette. The results derived from formulas are consistent with rigorous ones by numerical computation in the approximate range.
Cells ; Models, Theoretical ; Pressure ; Suction ; instrumentation

Structure, working principle, use method and clinical application of a central suction bottle is proposed. It boasts such features as simply produced and easily used. The workload of nurses can be reduced by using disposable attract bags, Also cross-infection can be effectively controlled. It is worth to be widely use in clinical application.
Disposable Equipment ; Equipment Design ; Suction ; instrumentation ; methods

According to the actual requirements of pediatric intensive care, a suction detection system of pediatric oral secretions integrated with monitoring function is designed. The system has the function of adjustable intermittent attraction. The duration and proportion of intermittent attraction can be adjusted according to the individualized needs of pediatric intensive care. The suction head of pacifier can reduce the mechanical damage to pediatric oral mucosa as much as possible. Meanwhile, the system can detect and monitor the real-time biochemical indexes of the collected oral secretions, which can be used to help the judgement of aspiration and quantitatively evaluate the microcirculation dysfunction.
Bodily Secretions ; Child ; Humans ; Mouth ; Suction/instrumentation*

OBJECTIVETo investigate the traditional VSD from one-way improvement to two-way suction drainage, meet the needs of clinical treatment, and prevent bung tube.

METHODSOne-way multi-side hole drainage tube of the traditional VSD was modified for bi-directional multi-side hole drainage, seaweed salt hydration alcohol polyethylene foam, Semipermeable membrane paste of Polyurethane and acrylic remains the same with that of the traditional VSD.

RESULTSThe applications of bi-directional multi-side hole drainage pipe can reduce the rate of plugging, rinse the complex and infection wound, create a physiological moist healing environment, and promote wound healing.

CONCLUSIONSThe improved VSD can reduce the failure rate and increase the therapeutic effect.

Drainage ; instrumentation ; methods ; Equipment Design ; Suction ; instrumentation ; methods ; Vacuum

The classification messages of non-powered suction apparatus device (NPSAD) intended for negative pressure wound therapy by CFDA have been analysis and generalized. A set of classification regular patterns of NPSAD have been generalized from its intended use, composition, mechanism, contact area and resorbable characteristic. It is helpful to draw a more consistent classification in NPSAD.
Humans ; Negative-Pressure Wound Therapy ; classification ; Suction ; instrumentation

According to the clinical requirements of cardiopulmonary bypass surgery, this paper established a simulation system for cardiac surgery which consists of venous reservoir, variable balance chamber, blood suction bag, ventricle suction bag, resistance valves, pressure gauges and tubings. Using the proposed system, perfusionists can mimic the implementation of pre-established surgery strategy, predict various abnormal conditions in the operation, and accordingly take the urgent actions so as to improve the success rate of surgery and to ensure the safety of patients.
Cardiac Surgical Procedures ; instrumentation ; Cardiopulmonary Bypass ; instrumentation ; Catheters, Indwelling ; Heart ; Humans ; Suction

Coronary disease is one of the highest mortality diseases in the world,and interventional therapy has been the best treatment choice for its low risks,high efficiency,less wound and rapid recovery after the operation.Thrombus aspiration catheter is one of the most important equipment in the interventional therapy instrument of coronary disease.This paper is based on the demand of clinical and market,designed and manufactured aspirated catheter for the treatment of coronary thrombosis.Through the performance comparison of the material,confirmed the main material quality of thrombus aspiration catheter and its organization.We also made the appraisement for the function of the material and the main performance of the thrombus aspiration catheter.The experiment turned out that our catheter performance is stable and also with highly reliable,which is absolutely fit for the using requirements of the clinical.
Catheters ; Coronary Angiography ; Coronary Thrombosis ; therapy ; Humans ; Suction ; Thrombectomy ; instrumentation ; Treatment Outcome

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

BACKGROUNDLaparoscopic surgery is advantageous for minimal invasiveness and rapid postoperative recovery. Since the use of laparoscopic hepatectomy in liver resection in the 1990s, it has been performed in a few institutions worldwide. Lack of efficient and safe techniques for liver transaction is the major obstacle preventing from its further development. We developed a new technique for laparoscopic hepatectomy by curettage and aspiration in 1998. In this paper we analyze the clinical outcomes of this technique after 7 years of practice.

METHODSAltogether 59 consecutive patients underwent laparoscopic hepatectomy by curettage and aspiration from August 1998 to January 2005 at our institution. These patients included 33 males and 26 females, with a mean age of 47 years. For liver transection laparoscopic Peng's multifunctional operative dissector (LPMOD) was used. Lesions included malignant liver tumors in 19 patients, benign liver tumors in 17, intrahepatic calculus in 18, and other liver lesions in 5. Procedures included local resections in 30 patients, left lateral segmentectomy in 28, and right hemihepatectomy in 1.

RESULTSLaparoscopic operation was completed in 57 patients. Two patients (3.4%) had the operation converted to laparotomy. The mean operating time was 143 minutes and the mean intraoperative blood loss was 456 ml. The mean length of postoperative hospital stay was 7 days. Complications occurred in 2 patients (3.4%), and there was no perioperative death.

CONCLUSIONLaparoscopic hepatectomy by curettage and aspiration is efficient and safe for liver resection.

Adult ; Aged ; Curettage ; methods ; Female ; Hepatectomy ; adverse effects ; instrumentation ; methods ; Humans ; Laparoscopy ; methods ; Length of Stay ; Male ; Middle Aged ; Suction