CN104622533A - Pressure indicative venous filling cuff - Google Patents

Abstract

The invention discloses a pressure-indicating blood-expelling venous filling cuff, which mainly includes a base cloth, a control valve, an inflatable ball, a pressure indicator, and a plurality of strip-shaped airbags arranged on the base cloth; each strip-shaped airbag is equipped with There are joints connected to the inner space of the corresponding bar-shaped air bag, and each joint is respectively connected to multiple air outlets of the control valve through flexible pipes; the inflatable ball and the pressure indicator are connected to the air inlet of the control valve through a three-way pipe, and the inside of the control valve There is a rotating disc that realizes the switching of the air inlet and outlet positions through rotation. The invention can respectively inflate the strip airbags successively through the control valve, and is equipped with a pressure indicator to monitor the internal air pressure to prevent the air pressure in the airbag from being too high or too low. The station design of the rotating disk is simple and convenient, which ensures one-way ventilation and also has a high degree of sealing. There is also a deflation valve at the joint of the strip airbag. After the operation, the cuff can be deflated and folded for storage.

Description

Pressure indicating venous inflation cuff

technical field

The invention relates to the field of medical supplies, in particular to a pressure-indicating hemorrhage type venous filling cuff.

Background technique

In daily clinical medical work, venipuncture is widely used. Usually, a rubber tourniquet is used to tighten the patient's distal limbs to prevent venous return, so that the venous blood vessels are filled and exposed, making it easier for medical staff to find punctured veins. However, in clinical work, it is difficult to control the pressure of the tourniquet so that it is in an appropriate range. Too much pressure can block the blood supply from the artery to the distal limb, and too small pressure cannot effectively block the venous return. filling. Due to differences in patient constitution, such as obesity, insufficient effective circulating blood volume, etc., it is often difficult to find a punctured vein or the vein is not filled well. After repeated attempts, the puncture often fails, which not only causes more damage to the patient And pain, increase the workload of medical staff, and make it difficult to continue treatment.

Contents of the invention

Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides an indicating vein filling cuff that is successively inflated and pressurized from the proximal end to the distal end to expel blood, so as to realize effective filling of the distal vein and facilitate puncture.

Technical solution: In order to achieve the above purpose, a pressure-indicating blood-expelling venous filling cuff of the present invention includes: a base cloth, a control valve, an inflatable ball, a pressure indicator, and more than two strip-shaped airbags arranged in the base cloth, And the tear strip provided on the base cloth; the control valve includes a housing, an air inlet, a plurality of air outlets arranged on the housing, and a rotating disk embedded in the housing to realize the switching of the air inlet and outlet stations by rotation , the rotating disk is provided with a through pipeline, the rotating disk realizes connecting the air inlet and a certain air outlet on different air inlet stations, and closes the air inlet and all air outlets on the closed station; each of the Each strip-shaped airbag is provided with a joint connected to the inner space of the corresponding strip-shaped airbag, and each joint is connected to the corresponding air outlet of the control valve through a flexible pipe; the inflatable ball and the pressure indicator are connected to the air inlet of the control valve through a three-way pipe. mouth.

The present invention facilitates the control of the pressure of the strip-shaped airbags through the pressure indicator, so that the air pressure of each strip-shaped airbag is greater than the venous pressure and less than the arterial diastolic pressure (suitable air pressure), ensuring that the venous return can be blocked without affecting the flow of the arteries to the distal limbs. Blood supply forces the distal extremity veins to fill. Then fill the strip-shaped air bag from the proximal end to the distal end to an appropriate air pressure to drive the blood in the vein to return to the distal end. Under a certain pressure, the amount of tissue fluid flowing back into the vein also increases, making it easier to fill the distal vein of the limb, which is conducive to the successful realization of venipuncture. . In order to control the air pressure of each strip-shaped airbag, the present invention makes each strip-shaped airbag be filled successively by adjusting the control valve to different stations.

The pressure indicator is a semi-closed container with an opening at one end and a tee pipe at the other end. The pressure indicator is provided with an indicating rod that expands and contracts with changes in internal air pressure. When an inflatable ball is used to inflate the bar-shaped air bag, the internal air pressure increases, and the length of the indicating rod protruding from the opening changes accordingly with the change of the internal air pressure.

Further, the pressure indicator is provided with a movable valve, a spring and a spring seat, and the movable valve is movable in the pressure indicator, and divides the space in the pressure indicator into a closed cavity and an open cavity, and the closed cavity The cavity communicates with the three-way pipe, the spring is arranged between the spring seat and the movable flap and is located in the open cavity, the rear end of the indicator rod is connected with the movable flap, and the front end corresponds to the opening of the pressure indicator.

Marking scales are arranged on the indicating rod. The scale from the front end of the pressure indicator is marked from small to large. On the scale, the area where the pressure is less than the venous pressure is painted white, indicating that the pressure is too low. On the scale, the area that is greater than the venous pressure but less than the arterial diastolic pressure is painted green. , indicating that the pressure is appropriate, and the scale is painted red in the area greater than the arterial diastolic pressure, indicating that the pressure is too high.

Considering the comprehensive cost and actual clinical needs, preferably, there are 2 to 4 strip-shaped airbags.

As a preferred solution of the present invention, the rotating disk is provided with a first air outlet, a second air outlet and an air inlet; and hoses are respectively connected to the first air outlet and the second air outlet; the rotary disk communicates with the air inlet and the first air outlet when the first air intake station is in position; it communicates with the air inlet when in the second air intake station and a second air outlet.

The first air outlet and the second air outlet are arranged in a direction of 180° relative to the control valve, and the air inlet is arranged at an angle of 90° between the first air outlet and the second air outlet; the direction of the pipe opening of the rotating disk at 90°. Based on this technical solution, except for the first air intake station and the second air inlet station, the remaining positions of the rotating disk are all closed stations. It is convenient for medical staff to operate.

The joint is provided with an air release valve. In order to facilitate the operation of medical staff, the air in the strip airbag can be removed by opening the air release valve.

Beneficial effects: the pressure-indicating blood-expelling venous filling cuff of the present invention aims at the deficiencies of the prior art, and provides a concept of filling the airbags step by step and controlling the air pressure of the airbags to realize effective filling of the exposed veins, and specifically discloses the concept of realizing this Operational cuff. The invention can respectively inflate the bar-shaped airbags through the regulating valve, and is equipped with a pressure indicator to monitor the internal air pressure to prevent damage. There is also a deflation valve at the joint of the shaped airbag to facilitate the deflation and folding of the cuff for storage after the operation is completed.

Description of drawings

Fig. 1 is a tiling schematic diagram of the present invention;

Fig. 2 is a structural representation of the present invention;

Fig. 3 is a schematic diagram of the state of the first air intake station of the rotary disk in the embodiment;

Fig. 4 is a schematic diagram of the state of the second air intake station of the rotary disk in the embodiment;

Fig. 5 is a schematic diagram of the state of the rotary disk sealing station of the embodiment;

Fig. 6 is a structural schematic diagram of the pressure indicator of the present invention;

Fig. 7 is a structural schematic diagram of the movable valve and the indicating rod in the pressure indicator;

Fig. 8 is the structural representation of outlet valve of the present invention;

Fig. 9 is a schematic diagram of the state of the air outlet valve of the present invention when it is deflated.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

Example 1

As shown in Figure 1 and Figure 2, a pressure-indicating hemorrhage-type venous filling cuff includes a base cloth 1, a control valve 2, an inflatable ball 3, a pressure indicator 4, and a first bar-shaped cuff arranged in parallel in the base cloth 1. Airbag 51, the second strip-shaped airbag 61, communicate with the first joint 52 of the first strip-shaped airbag 51, communicate with the second joint 62 of the second strip-shaped airbag 61, and the tear strip 7 located on the base cloth 1; control The valve 2 includes a housing 21, an air inlet 22, a first air outlet 23, and a second air outlet 24 arranged on the housing 21, and a rotating disk embedded in the housing 21 to realize the switching of the air inlet and outlet stations through rotation. 25. The inflatable ball 3 and the pressure indicator 4 are connected to the air inlet 22 of the control valve 2 through the three-way pipe 8, the first air outlet 23 is connected to the first joint 52 through the first hose 53, the second air outlet 24 is connected to the The second joint 62 is connected by a second hose 63 , and a through pipe 26 is horizontally provided in the rotating disk 25 , and switching between different working positions is realized by rotating the rotating disk 25 .

As shown in Fig. 2, Fig. 3, Fig. 4, and Fig. 5, the first air outlet 23 and the second air outlet 24 are arranged in a direction of 180° relative to the control valve 2, and the air inlet 22 is connected to the first air outlet 23 and the second air outlet. The air outlets 24 are arranged at an angle of 90°; the opening direction of the pipeline 26 of the rotating disk 25 is 90°. When the rotary disk 25 was at the first air intake station A as shown in Figure 3, the pipeline 26 of the rotary disk 25 communicated with the air inlet 22 and the first air outlet 23, filling the first strip air bag 51; when the rotary disk 25. When the second air intake station B as shown in FIG. During the closed station C shown in FIG. 5 , the air inlet 22 is different from any one of the air outlets 23 and 24 to realize the sealing effect and prevent the gas of the strip airbag from overflowing backwards.

Further in conjunction with Fig. 6 and Fig. 7, the pressure indicator 4 is a semi-closed revolving container with one end open and the other end connected to the tee pipe. The pressure indicator 4 is provided with a movable valve 41, a spring 42, a spring seat 43 and The indicator rod 44 and the movable valve 41 are movable in the pressure indicator 4, and the space in the pressure indicator 4 is divided into a closed chamber and an open chamber. 41 undergoes lateral displacement; the spring 42 is located between the spring seat 43 and the movable valve 41 and is located in the open cavity, the rear end of the indicator rod 44 is connected to the movable valve 41, and the front end corresponds to the opening 46 of the pressure indicator 4 . When extruding the inflatable ball 3 to inflate the bar-shaped air bag, the inner air pressure of the bar-shaped air bag increases, and the indicating rod 44 stretches out the length of the opening with the variation of the inner air pressure and becomes longer gradually. The indicator rod 44 is provided with a marked scale 45 . The inward scale from the open end of the pressure indicator 4 is successively from small to large, and the inward scale front end is painted with white area 451, green area 452 and red area 453, respectively indicating that the pressure is too low, suitable or too high. Along with the change of air pressure, the color of the scale scale that indicating rod 45 is displayed at the outlet is different, and it plays corresponding prompting and warning function.

In order to realize the filling of the strip-shaped airbag step by step, the present invention first wraps the cuff around the patient's forearm near the elbow, and sticks and fixes it through the tear strip 7 . Then by adjusting the control valve 2 to different stations, first adjust the control valve 2 to the first air intake station A, and use the air bag to fill the first strip-shaped airbag 51 to a suitable air pressure. The first strip-shaped airbag 51 is generally located at the bottom of the forearm Proximal end; then adjust the rotary disk 25 to the second air intake station B, and then fill the second strip airbag 61 to a suitable air pressure, the second strip airbag 61 is located at the far-center end of the first strip airbag 51, And the inflation air pressure is the same as that of the first strip airbag 51. At this moment, the system of the rotating disk 25 and the first strip airbag 51 is not connected and closed, thereby ensuring that only the second strip airbag 61 is filled. At this time, the venous vessels of the patient's forearm are easy to be filled and exposed under the action of sequentially compressing and driving blood, which is convenient for venipuncture. After the operation is completed, open the first joint 52 and the second joint 62 to get rid of the air in the bar-shaped airbag.

The present invention has no specific requirements on the structure of the deflation valve, and any deflation valve that realizes sealing and deflation functions can be used. As shown in Figures 8 and 9, the deflation valve and the joint used in this embodiment form a three-way structure together. Taking the second joint 62 as an example, the first outlet 621 of the three-way structure and the second strip airbag 61 connection, the second outlet 622 is connected with the second hose 63, the third outlet 623 is screwed with a sealing cap 620, and the side wall of the third outlet of the deflation valve is provided with an exhaust port 624, when the sealing cap 620 is tightened to At the limit position, the sealing cap 620 covers the air outlet 624 to seal; when the sealing cap 620 is unscrewed, the exhaust port 624 is opened for exhaust operation.

Example 2

This embodiment is basically the same as Embodiment 1, the difference is that there are three bar-shaped airbags, and three groups of joints, three hoses, three deflation valves, and one air inlet and three pipes corresponding to the rotating disk. There are three air outlets and uniquely correspond to three air inlet stations.

Example 3

This embodiment is basically the same as Embodiment 1, the difference is that there are four strip-shaped airbags, and correspondingly four sets of joints, four hoses, four deflation valves, and one air inlet for the pipe of the rotating disc and four air outlets and uniquely correspond to four air intake stations.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also possible. It should be regarded as the protection scope of the present invention.

Claims (8)

1. A pressure indication blood-expelling type venous filling cuff is characterized in that comprising: base cloth, control valve, inflatable ball, pressure indicator, be located at two or more strip airbags in the base cloth, and be located at base cloth The upper tear strip; the control valve includes a housing, an air inlet, a plurality of air outlets arranged on the housing, and a rotating disk embedded in the housing to realize the switching of the air inlet and outlet stations through rotation. The rotating disk There is a through pipe inside, and the rotary disk realizes the connection between the air inlet and a certain air outlet at different air inlet stations, and closes the air inlet and all air outlets at the closed station; each of the strip airbags is There are joints connected to the inner space of the corresponding bar-shaped air bag, and each joint is respectively connected to the corresponding air outlet of the control valve through a hose; the inflatable ball and the pressure indicator are connected to the air inlet of the control valve through a three-way pipe. 2. A pressure-indicating blood-expelling venous filling cuff according to claim 1, characterized in that: the pressure indicator is a semi-closed container with one end open and the other end connected to a three-way pipe, and the pressure indicator is set There is an indicator rod that expands and contracts with changes in internal air pressure. 3. A pressure-indicating blood-expelling venous filling cuff according to claim 2, characterized in that: the pressure indicator is provided with a movable valve, a spring and a spring seat, and the movable valve is inside the pressure indicator It is movable and divides the space in the pressure indicator into a closed cavity and an open cavity. The closed cavity communicates with the three-way pipe. The spring is arranged between the spring seat and the movable flap and is located in the open cavity. The end is connected with the movable valve, and the front end corresponds to the opening of the pressure indicator. 4 . The pressure-indicating blood-expelling venous filling cuff according to claim 1 , characterized in that: the indicating rod is provided with marking scales. 5 . The pressure-indicating blood-expelling venous filling cuff according to claim 1 , wherein there are 2 to 4 strip-shaped airbags. 6 . 6. A pressure-indicating blood-expelling venous filling cuff according to claim 1 or 5, characterized in that: the rotating disk is provided with a first air outlet, a second air outlet and an air inlet; The shaped airbag includes a first strip-shaped airbag and a second strip-shaped airbag, which are respectively connected to the first air outlet and the second air outlet through their corresponding joints and flexible pipes; The air inlet and the first air outlet; the air inlet and the second air outlet are connected at the second air intake station. 7. A pressure-indicating blood-expelling venous filling cuff according to claim 6, characterized in that: the first air outlet and the second air outlet are arranged in a direction of 180° relative to the control valve, and the air inlet is located at The angle between the first air outlet and the second air outlet is set at 90°; the opening direction of the pipe of the rotating disk is at 90°. 8. A pressure-indicating blood-expelling venous filling cuff according to claim 1, characterized in that: the joint is provided with an air release valve.