CN105595982A

CN105595982A - Water-filling pressure device for saphenous vein bypass graft (SVBG) leakage detection

Info

Publication number: CN105595982A
Application number: CN201610064396.5A
Authority: CN
Inventors: 柴守栋; 顾承雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-01-27
Filing date: 2016-01-27
Publication date: 2016-05-25

Abstract

The invention discloses a water-filling pressure device for saphenous vein bypass graft (SVBG) leakage detection, belonging to the technical field of medical equipment. The water-filling pressure device mainly comprises a needle tubing, connecting pipes, a pressure gauge, a tee joint, a valve switch and a needle head, and is characterized in that the needle tubing, the pressure gauge, the needle head and the tee joint are fixedly connected by the connecting pipes; the valve switch is arranged on the tee joint; the rear of the needle head is in an olive shape; a groove is formed at the front end of the needle head. After the water-filling pressure device for SVBG leakage detection is used, the pressure is visually displayed in the water-filling process of vein detection, and the numerical value change of push injection pressure can be observed, so that the waste caused by human error of SVBG can be avoided, and the application success rate of the SVBG is greatly improved; the water-filling pressure device is time-saving and labor-saving, is capable of reducing cost and saving raw materials, and has the advantages of being simple in structure, convenient to use, and the like.

Description

Vascular grafts leak detection water-filling pressure apparatus

Technical field

The invention belongs to technical field of medical instruments, specifically a kind of vascular grafts leak detection water-filling pressure apparatus.

Background technology

In cardiac operation, off pump coronary artery bypass is carried out comparatively generally at present, is the common method of surgical intervention coronary heart disease. In coronary artery bypass grafting, often the vascular grafts of application has the blood vessels such as arteria thoracica interna, great saphenous vein, radial artery, right gastroepiploic artery, and wherein great saphenous vein is the vascular grafts being widely used. Great saphenous vein traveling is in medial leg, comparatively show simple and easy in obtaining and the enough surgery application of length, but the vascular grafts that off pump coronary artery bypass uses has higher restenosis rate, has had a strong impact on its late result. The coronary artery bypass grafting vascular grafts occlusion rate of postoperative 1 year reaches 15%～30%, narrow or inaccessible blocking of the postoperative great saphenous vein bridge that has 50% left and right for 10 years. Research causes the reason of vascular grafts ISR, and the ISR of prevention Vein Bridge improves long-term patency rate and becomes a difficult problem urgently to be resolved hurrily at present. There are some researches show that excessive water filling dynamics (being greater than 140mmHg) can cause vein blood vessel overdistension to cause the damage of endangium, and inner film injury can cause endo cell to come off exposing subintimal collagen and smooth muscle cell, stimulate the inflammatory reaction of inner membrance and the release of various inflammatory factors, finally cause that vascellum endometrial hyperplasia tube wall thickens, luminal stenosis, be developed to entirely shutting of vascular grafts. The subject matter existing is: in operation, carry out in the free acquisition process of great saphenous vein, because the needs short period separates, during the free vein blood vessel of operation, to cut off ligation venous tributary blood vessel, in operation, needing to carry out heparin saline injects in vein tube chamber to judge that vein collateral blood vessels or vascular wall have ne-leakage, need to carry out ligation or stitching for the vascular wall or the side shoot that have seepage, to ensure can not leak blood after this vessel bridges is for bridging. But in the time carrying out in venous blood tube chamber that water-filling judges seepage, often be difficult to grasp the dynamics of fetching water, and different surgeon's dynamics is widely different, sometimes caused the damage of vein blood vessel inner membrance, can not be used for operation, also to again obtain vein blood vessel, so not only waste a large amount of manpower, material resources and financial resources, also improve the cost of operation.

Summary of the invention

In order to overcome the problem of above-mentioned existence, the invention provides a kind of vascular grafts leak detection water-filling pressure apparatus, it is simple in structure, easy to use, laborsaving saving time, has reduced operation cost, can demonstrate intuitively the pressure while carrying out water-filling to vein blood vessel, be convenient to observe the variation numerical value of injecting pressure, avoided the waste of vascular grafts human error completely, greatly improved the power that is applied to of vascular grafts.

Technical scheme of the present invention is achieved in that it mainly comprises: needle tubing, tube connector, Pressure gauge, threeway, valve switch, syringe needle, it is characterized in that: needle tubing, Pressure gauge, syringe needle are fixedly connected with by tube connector with threeway, on threeway, be provided with valve switch, syringe needle rear portion is olive-shaped, and its syringe needle front end is provided with groove.

The invention has the beneficial effects as follows: (1), in the time carrying out injecting fluid pressurization detection vascular grafts, according to the numerical value of pressure monitoring instrument demonstration, can adjust the size of thrust at any time; (2) accurately control full pressure size, avoid Overexertion to inject and cause vein blood vessel seriously to be expanded, arterial intima and vascular wall inner structure; (3) control vascular grafts and be subject to the pressure of liquid when full, alleviate its endangium cellular damage degree, be conducive to weaken the hyperplasia of endo cell, improve the quality of vascular grafts, improve long-term patency rate; (4) prevent that overexertion hemangiectasis blindly from causing the damage of endangium; (5) be provided with groove at the head end of syringe needle, its effect is when vein blood vessel is placed on syringe needle, is convenient to silk thread ligation and prevents from coming off. Pressure when the present invention can demonstrate vein blood vessel detection water-filling intuitively, the variation numerical value of pressure is injected in observation, avoid vascular grafts human operational error's waste completely, greatly improve the power that is applied to of vascular grafts, its laborsaving saving time, reduces costs, and saves raw material, and there is the advantages such as simple in structure, easy to use.

Brief description of the drawings

Below in conjunction with accompanying drawing, the present invention is described in further detail.

Fig. 1 is structural representation of the present invention.

In figure: 1. needle tubing, 2. tube connector, 3. Pressure gauge, 4. threeway, 5. valve switch, 6. syringe needle.

Detailed description of the invention

As shown in the figure, the present invention mainly adopts the accessory processing and fabricatings such as needle tubing 1, Pressure gauge 3, threeway 4 and stainless steel tube, needle tubing 1, Pressure gauge 3, syringe needle 6 are fixedly connected with by tube connector 2 screw threads with threeway 4, on threeway 4, be provided with valve switch 5, syringe needle 6 rear portions are olive-shaped, and its syringe needle 6 front ends are provided with groove. Needle tubing 1, Pressure gauge 3, threeway 4 can have been bought on market, in the time choosing Pressure gauge 3, require to have timing alarm function, syringe needle 6 adopts stainless steel tube to pass through specific purpose tool processing and fabricating, at two grooves of syringe needle 6 front end processing, interval 0.5cm between groove, its syringe needle 6 rear portion processing are olive-shaped; Threeway 4 requires to be provided with valve switch 5; Tube connector 2 adopts stainless steel tube processing and fabricating, uses specific purpose tool to carry out mantle fiber at tube connector 2 two ends, then, is connected with threeway 4, needle tubing 1, Pressure gauge 3 and syringe needle 6.

Using method: (1) first arrives 140mmHg surely by Pressure gauge automatic alarm program, then, extracts heparin-saline with injection needle 1, and olive syringe needle 6 is penetrated in vein blood vessel and fixed with silk thread; (2) use the slow pressurization of injection needle 1 to inject heparin saline and make vein blood vessel full, detect vascular wall and have or not leakage and ooze out. If find seepage, sew up or titanium folder carries out closure; (3) carrying out the salt solution pressure size that operator's close observation pressure monitoring instrument shows while injecting, can show according to Pressure gauge 3 dynamics of numerical value adjustment hand push note, maintain pressure below 140mmHg, in the time that water-filling pressure reaches 140mmHg, Pressure gauge automatic alarm, now stops pressurization immediately; (4) on vascular grafts, there is seepage part carry out ligation or sew up and process as observed in pressure process, then, then be forced into 140mmHg and examine vascular grafts and have or not fluid seepage. Attention will strictly be controlled hydraulic pressure and be no more than 140mmHg.

Claims

1. vascular grafts leak detection water-filling pressure apparatus, it mainly comprises: needle tubing, tube connector, pressureTable, threeway, valve switch, syringe needle, is characterized in that: needle tubing, Pressure gauge, syringe needle and threeway are by connectingAdapter is fixedly connected with, and is provided with valve switch on threeway, and syringe needle rear portion is olive-shaped, its syringe needle front endBe provided with groove.