CN103622831B - Nasogastric tube feeds quantitative infusion device - Google Patents

Abstract

The quantitative infusion device for nasogastric tube feeding includes a syringe with a piston rod and an infusion device. The syringe is placed in the fixed groove of the infusion device, and the push rod of the infusion device is provided with a quantitative control device. The side of the handle facing the trigger is provided with a quantitative adjustment device consisting of an "L"-shaped limit hook and a limit rod, or a quantitative adjustment device composed of a wedge-shaped slider, a threaded rod, and a nut. A simplified structure can be obtained by increasing the scale of the above-mentioned push rod and canceling the quantitative adjustment device. The invention is simple in structure, easy to use, realizes quantitative infusion, and is especially suitable for gastrointestinal tube feeding of home or self-made homogenate, which can not only play a role of filtration, avoid tube blockage, but also reduce link pollution and avoid increasing the chance of intestinal infection ;The end is connected with the outer tube by a handle to prevent the interface from being separated during operation, which is clean, economical and convenient.

Description

Nasogastric tube feeding quantitative infusion device

technical field

The invention relates to a medical auxiliary device, in particular to a quantitative infusion device for nasogastric tube feeding.

Background technique

Nasogastric tube feeding has been widely used clinically, and can be slowly instilled through a nasal feeding pump or a nasogastric tube. Nasal feeding pump can be selected in the hospital, but for patients who are fed by gastrointestinal tube at home, it is specially purchased, and the cost is too high; while enteral nutrition pump tube dripping is acceptable for finished nutritional preparations in bottles or bags, but for self-made nutritional preparations. Liquid food or nutritional preparations that need to be dissolved in powder, due to uneven mixing or large particles, are likely to block the enteral nutrition pump tube, and need to use a syringe to inject into the gastrointestinal tube.

The syringe currently used clinically is a syringe for intravenous drug preparation. Since this syringe does not have a filter device, medical staff or family members will filter the self-made homogenate with gauze or a fine colander, which leads to complicated operations and cumbersome procedures. The chance of contamination is increased, which can easily cause gastrointestinal infection; the needle plug is push-pull, and it will be very laborious for the injection volume of more than 100 ml. Therefore, there is an urgent need for a gastrointestinal tube feeding infusion device that is easy to operate and capable of quantitative control.

Contents of the invention

The object of the present invention is to provide a quantitative infusion device for nasogastric tube feeding to make up for the deficiencies in the prior art.

A quantitative infusion device for nasogastric tube feeding, comprising a syringe with a piston rod, and an infusion device. The infusion device has a semi-cylindrical fixing groove, and a front-end push piece is arranged in the fixing groove and the end of the fixing groove is provided with a handle with a trigger, the push rod moves forward by buckling the trigger, and the trigger can automatically reset after being buckled, and the feature is that the syringe is placed in the In the fixing groove of the injection device, and the said push rod is provided with quantitative control device, said quantitative control device includes a ring-shaped structure nested on the push rod, and the side of the ring-shaped structure is set There are fastening bolts; the side of the handle facing the trigger is provided with a quantitative adjustment device, which includes an "L"-shaped limit hook arranged at the edge of one side of the handle facing the trigger, and a position between the handle and the trigger. One end of the limit rod is movably connected to the inside of the handle, and the limit rod rides on the "L" shaped limit hook through rotation.

Above-mentioned push rod is provided with scale.

The side of the front end of the syringe is provided with a funnel-shaped feed port, and the top of the feed port is provided with a press-and-open type feed port cover.

A one-way valve is arranged in the above-mentioned feeding port.

The joint at the top of the syringe is a conical structure, and the outer surface of the conical structure is provided with a plurality of annular anti-off protrusions along the radial direction.

The capacity of the aforementioned syringe was set at 100 ml.

The infusion device is also provided with an arc-shaped detachment device that slides along the fixing groove.

A tether is also provided on the above-mentioned detachment preventer.

Or replace the quantitative adjustment device between the handle and the trigger with the following structure, the quantitative adjustment device includes a wedge-shaped slider arranged on the side of the handle facing the trigger, and a nut with a threaded rod arranged at the bottom of the handle, and the One end of the threaded rod is connected to the bottom of the wedge-shaped slider, and by rotating the threaded rod, the wedge-shaped slider slides on the side of the handle facing the trigger.

A scale is provided on the outer surface of the handle, and the scale is parallel to the threaded rod.

After simplifying the above structure, the following scheme is obtained:

A quantitative infusion device for nasogastric tube feeding, comprising a syringe with a piston rod, and an infusion device. The infusion device includes a semi-cylindrical fixing groove, and a push piece at the front end is arranged in the fixing groove. Push rod, and the end of the fixing groove is provided with a handle with a trigger, the push rod moves forward by buckling the trigger, and the trigger has an automatic reset function after buckling, it is characterized in that the syringe is placed in the input In the fixing groove of the injection device, and the said push rod is provided with quantitative control device, said quantitative control device includes a ring-shaped structure nested on the push rod, and the side of the ring-shaped structure is set There are fastening bolts; and the push rod is provided with a scale.

The invention is simple in structure, easy to use, realizes quantitative infusion, and is especially suitable for gastrointestinal tube feeding of home or self-made homogenate, which can not only play the role of filtration, avoid tube blockage, but also reduce link pollution and avoid increasing the chance of intestinal infection ;The end is connected with the outer tube by a handle to prevent the interface from being separated during operation, which is clean, economical and convenient.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the invention.

Fig. 2 is a schematic diagram of the three-dimensional structure of the invention.

Fig. 3 is a three-dimensional schematic diagram of the inventive syringe.

Figure 4 is a side view of the inventive infusion device.

Fig. 5 is a structural schematic diagram of the inventive limiting rod.

Fig. 6 is a structural schematic diagram of the inventive "L"-shaped limit hook.

Fig. 7 is a schematic diagram of the cooperation structure of the invented "L" shape limit hook and limit rod.

Fig. 8 is a structural schematic view of the inventive quantitative adjustment device when a wedge-shaped slider is used.

Among them, the syringe 1, the piston rod 2, the infusion device 3, the fixing groove 4, the push piece 5, the push rod 6, the trigger 7, the handle 8, the ring-shaped structure 9, the fastening bolt 10, and the "L" shape limit Hook 11, limit rod 12, feeding port 13, joint 14, anti-off device 15, tether 16, up and down rotating shaft 17, left and right rotating shaft 18, wedge-shaped slide block 19, threaded rod 20, nut 21.

detailed description

As shown in Figures 1 to 6, the quantitative infusion device for nasogastric tube feeding of the present invention includes a syringe 1 with a piston rod 2, and an infusion device 3, the infusion device 3 adopts the structure of a glue gun, It includes a semi-cylindrical fixing groove 4, which is provided with a push rod 6 with a push piece 5 at the front end, and a handle 8 with a trigger 7 is provided at the end of the fixing groove 4, and the push rod 6 is locked by buckling The trigger 7 moves forward, and the trigger 7 has the function of using the spring to automatically reset after being engaged. The syringe 1 is placed in the fixing groove 4 of the infusion device 3, and the push rod 6 is provided with Quantitative control device, said quantitative control device includes a ring-shaped structure 9 sleeved on the push rod 6 for sliding to a desired position on the push rod 6, and the side of the ring-shaped structure 9 A fastening bolt 10 is provided for locking the annular structure 9 at the above position, which can prevent the push rod 6 from continuing to move forward; the side of the handle 8 facing the trigger 7 is also provided with quantitative adjustment device, the quantitative adjustment device utilizes the open structure of the side of the handle 8 facing the trigger 7 in the existing infusion device 3, and its structure includes setting a plurality of "L"-shaped positioning on one edge of the side of the handle 8 facing the trigger 7 Hook 11, and a limit rod 12 between the handle 8 and the trigger 7, one end of the limit rod 12 is movably connected inside the handle 8, and can be connected by a universal joint; when in use, the limit rod 12 is placed on the Different "L"-shaped positioning hooks 11 use the limit rod 12 to block the buckling of the trigger 7, so that the injection volume is less than the maximum injection volume, thereby adjusting the single injection volume. Since the trigger 7 has a reset function, the trigger can be continuously buckled 7. The same amount can be injected continuously; the number of "L"-shaped positioning hooks 11 can be used as the number of gears, and it is not difficult to obtain the buckling position of the trigger 7 corresponding to various injection amounts through experiments during production. And set corresponding " L " shape positioning hook 11 on this position.

As shown in Figures 6 and 7, the above-mentioned limit rod 12 can also be designed as a structure with two right-angled corners. 8. On the upper and lower rotating shafts 17 inside, when in use, as shown in Figure 7, first the required gear of the limit rod 12 is set through the upper and lower rotating shafts 17, and then the limit rod 12 is flipped over the "L" shaped positioning through the left and right rotating shafts 18. Hook 11 on.

The above-mentioned push rod 6 is provided with a scale, which can convert the length of the push rod 6 into the injected volume, which can play a role in adjusting the total injection volume. No matter which gear the above-mentioned limit rod 12 is in, when the push rod 7 moves When reaching the scale defined by the quantitative control device, the total injection volume will be the capacity corresponding to the scale.

As shown in FIGS. 1-3 , a funnel-shaped feeding port 13 is provided on the side of the front end of the above-mentioned syringe 1 , and the top of the feeding port 13 is provided with a pop-open type feeding port cover, so as to facilitate feeding the syringe 1 .

A one-way valve is arranged in the above-mentioned feed port 3, so that the feed will not overflow from the feed port 13 during injection.

As shown in FIG. 1 , the joint 13 at the top of the above-mentioned syringe 1 is a conical structure, and the outer surface of the conical structure is provided with a plurality of ring-shaped detachment prevention protrusions along the radial direction. When using, draw the inner tube of the syringe to the feeding port, filter the prepared homogenate into the syringe, close the feeding port, open the nasogastric tube joint protection device, connect the tapered interface 13, push down the joint protection device, and put it on the stomach Put it on the tube and it's ready to use.

The capacity of the above-mentioned syringe 1 is set to 100 milliliters.

As shown in Figures 1, 2, and 4, the above-mentioned infusion device 3 is also provided with an arc-shaped detachment preventer 15 that slides along the fixing groove 4. After the syringe 1 is loaded into the fixation groove 4, the detachment preventer slides To the top of the syringe 1 to prevent the syringe from falling off. The above-mentioned detachment preventer 15 is also provided with a tether 16, which is used to tie parts such as joint caps.

Alternatively, the above-mentioned quantitative adjustment device between the handle 8 and the trigger 7 is replaced by the following structure, thereby obtaining the second embodiment of the present invention.

As shown in Figure 8, the quantitative adjustment device includes a wedge-shaped slider 19 arranged on the side of the handle 8 facing the trigger 7, and a nut 21 provided at the bottom of the handle 8 with a threaded rod 20, and one end of the threaded rod 20 is Connected to the bottom of the wedge-shaped slider 19, by turning the threaded rod 20, the wedge-shaped slider 19 slides on the side of the handle 8 facing the trigger 7, and when the slider slides to different positions, the degree of engagement of the trigger 7 can be controlled, thereby Adjust the single injection amount, because the trigger 7 has a reset function, the continuous buckling of the trigger 7 can continuously inject the same amount.

There is a scale on the outer surface of the above-mentioned handle, and the scale is parallel to the threaded rod 20. Since the threaded rod has the characteristics of continuous advancement, it can realize continuous adjustment between "0~maximum single injection volume". Play a real fine-tuning effect. The total injection volume is adjusted by the quantitative control device, and the single injection volume is adjusted by the quantitative adjustment device.

Its advantage is also that it can adapt to syringes of different capacities and different diameters, and the position on the handle scale of the required single injection amount can be calculated through the continuous scale value on the handle 8; through the continuous scale value on the push rod 6 It is also possible to calculate the position on the scale of the push rod corresponding to the total injection amount once.

In fact, after simplifying the above structure, the third embodiment shown in the following scheme is obtained:

A quantitative infusion device for nasogastric tube feeding, comprising a syringe 1 with a piston rod 2, and an infusion device 3, the infusion device 3 includes a semi-cylindrical fixed groove 4, and the fixed groove 4 is provided with There is a push rod 6 with a push piece 5 at the front end, and a handle 8 with a trigger 7 is provided at the end of the fixing groove 4. The push rod 6 moves forward by buckling the trigger 7, and the trigger 7 has a Automatic reset function, characterized in that the syringe 1 is placed in the fixed groove 4 of the infusion device 3, and the quantitative control device is provided on the push rod 6, and the quantitative control device includes a set on the push rod 6 on the ring-shaped structure 9, and the side of the ring-shaped structure 9 is provided with fastening bolts 10; the above-mentioned push rod 6 is provided with a scale.

That is, the position on the scale of the push rod corresponding to the single injection amount can be calculated through the continuous scale value on the push rod 6, and then the ring-shaped structure 9 is released to the next position, and so on until the required total injection amount is injected. injection volume.

Claims (7)

1. Nasogastric tube feeding quantitative infusion device, comprising a syringe (1) with a piston rod (2), and an infusion set (3), the infusion set (3) has a semi-cylindrical fixed groove (4), the fixing groove (4) is provided with a push rod (6) with a push piece (5) at the front end, and the end of the fixing groove (4) is provided with a handle (8) with a trigger (7), so The said push rod (6) moves forward by buckling the trigger (7), and the trigger (7) can automatically reset after being buckled, and it is characterized in that the said syringe (1) is placed on the infusion set (3) In the fixing groove (4), and the said push rod (6) is provided with a quantitative control device, said quantitative control device comprises a circular structure (9) sleeved on the push rod (6), And the side of this annular structure (9) is provided with fastening bolt (10); The side of described handle (8) facing trigger (7) is provided with quantitative adjustment device, and this quantitative adjustment device includes being arranged on handle (8) ) towards the "L" shaped limit hook (11) at the edge of one side of the trigger (7), and the limit lever (12) between the handle (8) and the trigger (7), the limit lever (12) One end is movably connected inside the handle (8), and the stop bar (12) rides on the described "L" shaped stop hook (11) through rotation; Above-mentioned push rod (6) is provided with scale; The joint (14) at the top of the syringe (1) is a conical structure, and the outer surface of the conical structure is provided with a plurality of ring-shaped anti-off protrusions along the radial direction. 2. The quantitative infusion device for nasogastric tube feeding as claimed in claim 1, characterized in that the side of the front end of the above-mentioned syringe (1) is provided with a funnel-shaped feeding port (13), and the top of the feeding port (13) is provided with Press the pop-open spout cover. 3. The quantitative infusion device for nasogastric tube feeding according to claim 2, characterized in that a one-way valve is arranged in the feeding port (13). 4. The quantitative infusion device for nasogastric tube feeding according to claim 1, characterized in that the infusion device (3) is further provided with an arc-shaped detachment preventer (15) sliding along the fixing groove (4). 5. The quantitative infusion device for nasogastric tube feeding according to claim 4, characterized in that a tether (16) is also provided on the above-mentioned detachment preventer (15). 6. The quantitative infusion device for nasogastric tube feeding as claimed in claim 1, characterized in that the quantitative adjustment device between the handle (8) and the trigger (7) is replaced by the following structure, the quantitative adjustment device includes setting The wedge-shaped slide block (19) on one side of the handle (8) towards the trigger (7), and a nut (21) that is provided with a threaded rod (20) at the bottom of the handle (8), and the threaded rod (20) ) one end is connected to the bottom of the wedge-shaped slider (19), by turning the threaded rod (20), the wedge-shaped slider (19) slides on the side of the handle (8) towards the trigger (7). 7. The quantitative infusion device for nasogastric tube feeding according to claim 6, characterized in that a scale is provided on the outer surface of the handle, and the scale is parallel to the threaded rod (20).