CN110801552B - Auxiliary tooling for conveniently adjusting the length of an extension tube - Google Patents

Abstract

The present invention discloses an auxiliary tooling for facilitating adjustment of the length of an extension tube in the field of clinical medical technology, comprising a base, an auxiliary roller is arranged on the right side of the connection between the top inner wall of the mounting frame and the adjusting screw rod, the other end of the extension tube passes through the bottom of the pressure roller and the top of the auxiliary roller and extends to the right end of the mounting frame, and the right end of the extension tube extends to the right outer wall of the mounting frame and is connected with an indwelling needle, a backflow prevention component is arranged on the left end of the connection between the extension tube and the indwelling needle, and an active clip is slidably sleeved on the left end of the connection between the extension tube and the anti-backflow component, when the tube needs to be sealed after the liquid is infused, the screw rod is rotated to make the connecting plate drive the upper pressure roller to squeeze the extension tube, and when the upper pressure roller continues to squeeze the extension tube, the extension tube can be sealed to prevent the sealing liquid or the residual medicine in the indwelling needle from entering the extension tube, thereby preventing the weakening of the sealing effect or the deterioration of the medicine.

Description

Auxiliary tooling for conveniently adjusting the length of an extension tube

Technical Field

The invention relates to the technical field of clinical medicine, in particular to an auxiliary tooling for facilitating the adjustment of the length of an extension tube.

Background technique

Extension tubes are a type of medical equipment that is widely used in clinical practice, especially pump-type extension tubes. When patients need to use drugs at a lower speed, they often choose pump-type extension tubes, one end of which is connected to a syringe and the other end is connected to an indwelling needle. Under the action of a push pump, the drug can be accurately injected at the required speed. However, in actual use, it was found that pump-type extension tubes have many disadvantages: due to the fixed length, patients cannot move drastically, and even the most basic turning over in bed is restricted, which brings inconvenience to patients; when the infusion at one end of the same indwelling needle is completed and the drug at the other end needs to be continuously injected at a low speed, in order to prevent the indwelling needle from being blocked, the nurse needs to seal the tube from the end where the infusion is completed. Since there is no device to prevent liquid backflow installed on the pump-type extension tube, the nurse can only manually fold the extension tube to temporarily prevent backflow, and then manually release it after the tube is sealed. However, in actual operation, the nurse cannot manually fold the extension tube. If the nurse fails to fold the tube completely or forgets to fold it back, the sealing liquid and the residual drugs in the indwelling needle will flow back into the extension tube, causing the sealing tube to be ineffective and mixing different drugs; because the pump-type extension tube is used, the drug injection speed is slow and the pressure is low, and blood is easy to flow back into the extension tube, causing blood coagulation and blocking the tube; during the infusion process, the patient urinates a lot and often needs to go to the toilet, but there is no switch on the extension tube like the one on the infusion set, and the nurse is urgently needed to help suspend the infusion. Due to the busy work of the nurse, the patient cannot serve the patient in time, resulting in a tense relationship between the nurse and the patient, and also increasing the workload of the nurse. To this end, we propose an auxiliary tooling that is convenient for both patients and nursing staff to adjust the length of the extension tube.

Summary of the invention

1. Technical issues to be resolved

The purpose of the present invention is to provide an auxiliary tooling for facilitating the adjustment of the length of an extension tube, so as to solve the problems raised in the above-mentioned background technology.

(II) Technical solution

To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an auxiliary tooling for facilitating adjustment of the length of an extension tube, comprising a base, a main sleeve is arranged on the left side of the top outer wall of the base, a sub-sleeve rod is movably inserted on the top of the main sleeve, a tightening knob is arranged on the top of the left outer wall of the main sleeve, a support plate is arranged on the top of the sub-sleeve rod, a pump syringe is arranged on the top of the support plate, an extension tube is arranged on the bottom of the pump syringe, a fixing ring matching with the extension tube is arranged on the top of the right outer wall of the main sleeve, a mounting bracket is arranged on the right side of the top outer wall of the base, an adjusting screw is arranged on the central thread of the top outer wall of the mounting bracket, and the bottom of the adjusting screw extends A lifting plate is connected to the inner cavity of the mounting frame through a bearing, a pressure roller is provided at the bottom of the lifting plate, and benchmark rods are provided on the left and right sides of the connection between the top outer wall of the lifting plate and the adjusting screw rod, the top of the benchmark rod extends to the top outer wall of the mounting frame, and an auxiliary roller is provided on the right side of the connection between the top inner wall of the mounting frame and the adjusting screw rod, the other end of the extension tube passes through the bottom of the pressure roller and the top of the auxiliary roller and extends to the right end of the mounting frame, and the right end of the extension tube extends to the right outer wall of the mounting frame and is connected to a retention needle, the left end of the extension tube where the retention needle is connected is provided with an anti-backflow assembly, and the left end of the extension tube where the anti-backflow assembly is connected is slidably sleeved with an active clip.

Furthermore, the movable clip includes a shell body which is slidably sleeved on the outer wall of the extension tube, the inner walls on the left and right sides of the shell body are provided with grooves, and movable plates are slidably connected in the two groups of grooves, the center of the top outer wall of the movable plate is connected with a screw rod through a bearing, the top of the screw rod extends to the top outer wall of the shell body and is provided with a handle, limit rods are provided on the left and right sides of the top outer wall of the movable plate, the top of the limit rods extends to the top outer wall of the shell body, connecting plates are provided on the front and back sides of the bottom outer wall of the movable plate, an upper pressure roller is connected between the two groups of connecting plates through bearings, the bottom of the front and back inner walls of the shell body are connected with a lower pressure roller through bearings, and the upper pressure roller and the lower pressure roller are respectively located at the top and bottom of the extension tube.

Furthermore, the anti-backflow assembly includes a sealing block fixedly mounted on the outer wall of the extension tube, the top and bottom inner walls of the sealing block are both provided with grooves, two groups of light springs are provided on the inner walls on opposite sides of the grooves, an anti-backflow block is slidably connected in the grooves, opposite ends of the two groups of light springs are fixedly connected to the anti-backflow block, and opposite ends of the two groups of anti-backflow blocks extend to the inner cavity of the extension tube.

Furthermore, a wear-resistant rubber layer is provided at the connection between the shell and the extension tube.

Furthermore, the cross section of the backflow prevention block is trapezoidal, and the left and right sides of the backflow prevention block are an inclined surface and a vertical surface respectively.

Furthermore, the pressure roller and the auxiliary roller are both rubber rollers, and the outer walls of the pressure roller and the auxiliary roller are both provided with an annular groove matching with the extension tube.

Furthermore, the front end surface of the marking rod is provided with scale lines, and the standard scale of the scale lines is equal to the pitch of the adjusting screw rod.

(III) Beneficial effects

1. The length of the right end of the extension tube can be changed during use and adjusted freely, so that the patient can lie down and move comfortably, improving comfort;

2. When the tube needs to be sealed after the infusion, the sealing liquid can be injected into the sealing liquid inlet through the injection tube. If there is no medical staff, the extension tube can be sealed by squeezing the extension tube through the upper pressure roller to prevent the residual medicine in the indwelling needle from entering the extension tube (because the sealing liquid inlet and the extension tube are connected) and causing the sealing effect to weaken or the medicine to deteriorate;

3. When the infusion stops, the patient can get out of bed and move around easily without asking the nurse to plug the indwelling needle, which greatly reduces the workload of the nurse.

BRIEF DESCRIPTION OF THE DRAWINGS

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

FIG2 is a schematic diagram of the connection between the extension tube and the movable clip of the present invention;

FIG3 is a schematic diagram of the connection between the extension tube and the housing of the present invention;

FIG. 4 is a schematic diagram showing the connection between the extension tube and the sealing block of the present invention.

In the figure: 1. base; 2. main sleeve; 3. sub-sleeve rod; 4. tightening knob; 5. support plate; 6. syringe for pump; 7. extension tube; 8. fixing ring; 9. mounting frame; 10. adjusting screw; 11. lifting plate; 12. pressure roller; 13. benchmark; 14. auxiliary roller; 15. anti-backflow assembly; 16. movable clip; 17. indwelling needle; 18. anti-backflow block; 19. shell; 20. lower pressure roller; 21. movable plate; 22. screw; 23. limit rod; 24. connecting plate; 25. upper pressure roller; 26. sealing block; 27. slot; 28. light spring.

Detailed ways

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

The present invention provides a technical solution: an auxiliary tooling for facilitating adjustment of the length of an extension tube, which has the advantages of being convenient for adjusting the length of the extension tube and preventing backflow, and refers to Figures 1-2, comprising a base 1, a main sleeve 2 is arranged on the left side of the top outer wall of the base 1, a sub-sleeve rod 3 is movably plugged on the top of the main sleeve 2, a tightening knob 4 is arranged on the top of the left outer wall of the main sleeve 2, a support plate 5 is arranged on the top of the sub-sleeve rod 3, and a pump syringe 6 is arranged on the top of the support plate 5. When the pump syringe 6 is supplied with liquid, the sub-sleeve rod 3 can be loosened by rotating the tightening knob 4 , and then lower the pump syringe 6 to a height that is convenient for the nurse to operate. An extension tube 7 is provided at the bottom of the pump syringe 6. A fixing ring 8 matching the extension tube 7 is provided at the top of the right outer wall of the main sleeve 2. The function of the fixing ring 8 is to fix the left end of the extension tube 7 to the outer wall of the main sleeve 2 to prevent the pressure roller 12 from rising and falling and causing the pump syringe 6 to separate from the extension tube 7. A mounting frame 9 is provided on the right side of the top outer wall of the base 1. An adjusting screw 10 is provided with a central thread on the top outer wall of the mounting frame 9. The bottom of the adjusting screw 10 extends to the inner cavity of the mounting frame 9 and passes through the bearing A lifting plate 11 is connected, a pressure roller 12 is provided at the bottom of the lifting plate 11, and a reference rod 13 is provided on both sides of the connection between the top outer wall of the lifting plate 11 and the adjusting screw rod 10. The top of the reference rod 13 extends to the top outer wall of the mounting frame 9, and an auxiliary roller 14 is provided on the right side of the connection between the top inner wall of the mounting frame 9 and the adjusting screw rod 10. When it is necessary to adjust the length of the extension tube 7, the adjusting screw rod 10 is rotated to drive the lifting plate 11 and the pressure roller 12 to move up and down, and change the length of the extension tube 7 pressed down by it, thereby changing the right end of the extension tube 7 and the human body. The length of the connection is adapted to the patient's activities, so as to avoid being pulled off due to being very restricted when the patient turns over or moves greatly, thereby improving comfort and facilitating the nurse to operate the extension tube 7. The other end of the extension tube 7 passes through the bottom of the pressure roller 12 and the top of the auxiliary roller 14 and extends to the right end of the mounting frame 9, and the right end of the extension tube 7 extends to the right outer wall of the mounting frame 9 and is connected with an indwelling needle 17. The left end of the connection between the extension tube 7 and the indwelling needle 17 is provided with an anti-reflux component 15, and the left end of the connection between the extension tube 7 and the anti-reflux component 15 is slidably sleeved with an active clip 16;

Please refer to FIG. 3 , the movable clip 16 includes a shell 19 slidably sleeved on the outer wall of the extension tube 7, the inner walls on both sides of the shell 19 are provided with grooves, and a movable plate 21 is slidably connected in the two groups of grooves, the center of the top outer wall of the movable plate 21 is connected with a screw rod 22 through a bearing, the top of the screw rod 22 extends to the top outer wall of the shell 19 and is provided with a handle, the left and right sides of the top outer wall of the movable plate 21 are provided with limit rods 23, the top of the limit rod 23 extends to the top outer wall of the shell 19, the front and rear sides of the bottom outer wall of the movable plate 21 are provided with connecting plates 24, and an upper pressure roller 25 is connected between the two groups of connecting plates 24 through a bearing. The bottom of the inner wall of the front and rear sides of the housing 19 is connected with a lower pressing roller 20 through a bearing, and the upper pressing roller 25 and the lower pressing roller 20 are respectively located at the top and bottom of the extension tube 7. When the liquid needs to be sealed after the infusion, the screw rod 22 is rotated to make the connecting plate 24 drive the upper pressing roller 25 to squeeze the extension tube 7. When the upper pressing roller 25 continues to squeeze the extension tube 7, the extension tube 7 can be sealed to prevent the sealing liquid or the residual medicine in the indwelling needle 17 from entering from the extension tube 7 (because the sealing liquid inlet of the indwelling needle 17 is connected to the extension tube 7). After the sealing liquid enters the extension tube 7, it will cause the deterioration of the medicine, such as turbidity, discoloration, etc., causing waste of medicine;

Please refer to FIG. 4 , the backflow prevention assembly 15 includes a sealing block 26 fixedly arranged on the outer wall of the extension tube 7, the inner wall of the top and bottom of the sealing block 26 are both provided with slots 27, and the inner wall of the opposite side of the two sets of slots 27 is provided with a light spring 28, and the anti-backflow block 18 is slidably connected in the slot 27, and the opposite ends of the two sets of light springs 28 are fixedly connected to the anti-backflow block 18, and the opposite ends of the two sets of anti-backflow blocks 18 extend to the inner cavity of the extension tube 7. When the right side exceeds a certain pressure, the two sets of anti-backflow blocks 18 open and release the light spring 28. The medicine enters the blood vessel through the gap between the two groups of anti-backflow blocks 18. When the pressure drops, that is, the infusion stops, when the pressure on the right side, that is, the upstream pressure decreases, the light spring 28 resets to close the two groups of anti-backflow blocks 18, so that the blood will not flow back into the extension tube through the two groups of anti-backflow blocks 18 (once the blood flows back into the extension tube 7, it will be blocked at the least, mixed into the syringe at the worst, or even flow out of the body, causing heavy bleeding and threatening the patient's life). It is more convenient for the patient to get out of bed and move around without asking the nurse to jam the indwelling needle, which reduces the workload of the nurse;

Please refer to FIG3 , a wear-resistant rubber layer is provided at the connection between the housing 19 and the extension tube 7. When the movable clip 16 is not used, the movable clip 16 can slide on the outer wall of the extension tube 7, and the upper pressure roller 25 and the lower pressure roller 20 generated are close to the outer wall of the extension tube 7, which can reduce the wear of the housing 19 on the extension tube 7 when sliding left and right;

Please refer to FIG. 4 . The cross section of the backflow prevention block 18 is trapezoidal. The left and right sides of the backflow prevention block 18 are inclined and vertical surfaces respectively. The pressure upstream (the liquid flow direction is downstream) is relatively large. The inclined surface can increase the contact area between the liquid surface and the backflow prevention block 18, making it easier to push open and allow the liquid to pass through.

Please refer to FIG. 1 , the pressure roller 12 and the auxiliary roller 14 are both rubber rollers, and the outer walls of the pressure roller 12 and the auxiliary roller 14 are both provided with an annular groove that matches the extension tube 7, and the extension tube 7 will slide in the annular groove to prevent it from sliding left and right and increasing wear;

Please refer to FIG. 1 , the front end surface of the reference rod 13 is provided with scale lines, and the standard scale of the scale lines is equal to the pitch of the adjusting screw 10 , and the adjusting screw 10 is rotated according to the scale lines, and the length of the extension tube 7 can be adjusted accurately.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. An auxiliary tooling for facilitating adjustment of the length of an extension tube, comprising a base (1), characterized in that: a main sleeve (2) is arranged on the left side of the top outer wall of the base (1), a sub-sleeve rod (3) is movably inserted on the top of the main sleeve (2), a tightening knob (4) is arranged on the top of the left outer wall of the main sleeve (2), a support plate (5) is arranged on the top of the sub-sleeve rod (3), a pump syringe (6) is arranged on the top of the support plate (5), an extension tube (7) is arranged on the bottom of the pump syringe (6), a fixing ring (8) matched with the extension tube (7) is arranged on the top of the right outer wall of the main sleeve (2), a mounting frame (9) is arranged on the right side of the top outer wall of the base (1), an adjusting screw rod (10) is arranged on the center thread of the top outer wall of the mounting frame (9), the bottom of the adjusting screw rod (10) extends to the inner cavity of the mounting frame (9) and is connected to a lifting device through a bearing. A plate (11), a pressure roller (12) is provided at the bottom of the lifting plate (11), a reference rod (13) is provided on both sides of the connection between the top outer wall of the lifting plate (11) and the adjusting screw rod (10), the top of the reference rod (13) extends to the top outer wall of the mounting frame (9), an auxiliary roller (14) is provided on the right side of the connection between the top inner wall of the mounting frame (9) and the adjusting screw rod (10), the other end of the extension tube (7) passes through the bottom of the pressure roller (12) and the top of the auxiliary roller (14) and extends to the right end of the mounting frame (9), and the right end of the extension tube (7) extends to the right outer wall of the mounting frame (9) and is connected to a retention needle (17), the left end of the connection between the extension tube (7) and the retention needle (17) is provided with an anti-backflow component (15), and the left end of the connection between the extension tube (7) and the anti-backflow component (15) is slidably sleeved with a movable clip (16); The movable clip (16) comprises a shell (19) which is slidably sleeved on the outer wall of the extension tube (7). The inner walls on the left and right sides of the shell (19) are both provided with grooves, and movable plates (21) are slidably connected in the two groups of grooves. A screw rod (22) is connected to the center of the top outer wall of the movable plate (21) via a bearing. The top of the screw rod (22) extends to the top outer wall of the shell (19) and is provided with a handle. Limit rods (23) are provided on the left and right sides of the top outer wall of the movable plate (21). The top of the limit rod (23) extends to the top outer wall of the shell (19). Connecting plates (24) are provided on the front and rear sides of the bottom outer wall of the movable plate (21). An upper pressure roller (25) is connected between the two groups of the connecting plates (24) via bearings. The bottom of the inner walls on the front and rear sides of the shell (19) are connected to a lower pressure roller (20) via bearings. The upper pressure roller (25) and the lower pressure roller (20) are respectively located at the top and bottom of the extension tube (7); The backflow prevention assembly (15) comprises a sealing block (26) fixedly arranged on the outer wall of the extension tube (7); the inner walls of the top and bottom of the sealing block (26) are both provided with slots (27); two groups of light springs (28) are provided on the inner walls on opposite sides of the slots (27); the backflow prevention block (18) is slidably connected in the slots (27); opposite ends of the two groups of light springs (28) are fixedly connected to the backflow prevention block (18); and opposite ends of the two groups of backflow prevention blocks (18) extend to the inner cavity of the extension tube (7). 2. An auxiliary tool for adjusting the length of an extension tube according to claim 1, characterized in that a wear-resistant rubber layer is provided at the connection between the shell (19) and the extension tube (7). 3. An auxiliary tooling for facilitating adjustment of the length of the extension tube according to claim 1, characterized in that: the cross-section of the anti-backflow block (18) is trapezoidal, and the left and right sides of the anti-backflow block (18) are inclined surfaces and vertical surfaces respectively. 4. An auxiliary tooling for facilitating adjustment of the length of the extension tube according to claim 1, characterized in that: the pressure roller (12) and the auxiliary roller (14) are both rubber rollers, and the outer walls of the pressure roller (12) and the auxiliary roller (14) are both provided with an annular groove matching the extension tube (7). 5. The auxiliary tooling for facilitating the adjustment of the extension tube length according to claim 1, characterized in that: the front end surface of the marking rod (13) is provided with scale lines, and the standard scale of the scale lines is equal to the pitch of the adjusting screw rod (10).