Contrast agent injection regulation and control device

Abstract

The invention discloses a contrast agent injection regulation and control device, and relates to the technical field of contrast agent injection.The contrast agent injection regulation and control device comprises an injection pipe, one end of the injection pipe is fixedly connected with a limiting plate, a piston is slidably installed in the injection pipe, a drawing rod is installed on one side of the piston, and one end of the drawing rod is fixedly connected with a pushing piece; a limiting ring is fixedly connected to the outer portion of the drawing rod, first limiting grooves are symmetrically formed in the outer portion of the injection pipe, and an adjusting mechanism is arranged on the outer portion of the injection pipe. The position of the positioning mechanism can be changed by moving the adjusting mechanism, the scale strip is arranged outside the injection tube, the adjusting mechanism can be conveniently moved to a proper position, and when a contrast agent is sucked, due to the cooperation of the positioning mechanism and the limiting ring, the drawing rod can only move to a designated position, so that the amount of the sucked contrast agent is guaranteed, and the contrast agent suction efficiency is improved. The situation that the subsequent radiography effect is affected after too much or too little inhalation is injected into the body of a patient is avoided, and adjustment can be conveniently conducted according to the condition of the patient.

Description

Technical Field

[0001] The present invention relates to the technical field of contrast agent injection, and particularly to a contrast agent injection control device. Background Art

[0002] A contrast agent is a chemical product injected (or taken) into human tissues or organs to enhance the imaging observation effect. The density of these products is higher or lower than that of the surrounding tissues, and the formed contrast is used to display images with certain instruments, such as iodine preparations and barium sulfate commonly used in X-ray observation. When injecting the contrast agent into a patient, an injection control device is required.

[0003] However, the existing contrast agent injection devices are not convenient to control the injection volume during use, which easily leads to too much or too little injection of the contrast agent and affects the imaging effect. Moreover, after the needle is used, a protective cover needs to be sleeved, but the protective cover is easy to fall off, resulting in the exposure of the needle. The exposed needle is easy to prick medical staff and cleaning staff.

[0004] Based on this, a contrast agent injection control device is now provided, which can eliminate the drawbacks of the existing devices. Summary of the Invention

[0005] The purpose of the present invention is to provide a contrast agent injection control device to solve the problems of inconvenient control of the contrast agent injection volume and easy detachment of the needle protective cover in the background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A contrast agent injection control device includes an injection tube. One end of the injection tube is fixedly connected with a limiting plate. A piston is slidably installed inside the injection tube. One side of the piston is provided with a draw rod. One end of the draw rod is fixedly connected with a pushing member. A limiting ring is fixedly connected to the outside of the draw rod. First limiting grooves are symmetrically formed on the outside of the injection tube. An adjusting mechanism is provided on the outside of the injection tube, and a positioning mechanism is provided on the top of the adjusting mechanism.

[0008] Based on the above technical solutions, the present invention also provides the following optional technical solutions:

[0009] In an optional solution: The adjusting mechanism includes a sliding sleeve. The sliding sleeve is slidably installed on the outside of the injection tube through the first limiting groove. A knob is threadedly connected to the bottom of the sliding sleeve. Mounting members are symmetrically and fixedly connected to the top of the sliding sleeve.

[0010] In an alternative solution: The positioning mechanism includes two first gears and two second gears. The first gears and the second gears are rotatably installed on the top of the mounting member, and the first gears and the second gears are meshed with each other. A rotating member is fixedly installed on the outside of the second gear. A clamping member is fixedly connected to the bottom of the rotating member, and the clamping member is adapted to the drawing rod. A rack is meshed between the two first gears.

[0011] In an alternative solution: A chute is provided on one side of the pushing member. One end of the rack penetrates through the limiting plate and is slidably installed with the pushing member through the chute. A third spring is installed on the top of the rack, and the third spring is located inside the chute.

[0012] In an alternative solution: The other end of the injection tube is fixedly connected to a connecting tube. A clamping tube is slidably installed on the outside of the connecting tube. A second limiting groove adapted to the connecting tube is provided on the inner wall of the clamping tube. A positioning groove is provided on the top of the clamping tube.

[0013] In an alternative solution: A first clamping mechanism is provided inside the connecting tube.

[0014] In an alternative solution: Mounting grooves are provided on both the top and the top of the connecting tube. The first clamping mechanism includes positioning beads installed inside the mounting grooves. A first spring is provided on one side of the positioning beads, and the first spring is located inside the mounting grooves. The positioning beads are adapted to the positioning grooves.

[0015] In an alternative solution: A protective sleeve is sleeved on the outside of the clamping tube. One end of the clamping tube is fixedly connected to a needle, and the needle is located inside the protective sleeve.

[0016] In an alternative solution: Second clamping mechanisms are provided on both the top and the bottom of the protective sleeve.

[0017] In an alternative solution: The second clamping mechanism includes a mounting sleeve. The mounting sleeve is fixedly installed on the top and the bottom of the protective sleeve. A positioning rod is slidably installed inside the mounting sleeve. A fixing ring is fixedly connected to the outside of the positioning rod. A second spring is sleeved on the outside of the positioning rod and on one side of the fixing ring. The positioning rod is adapted to the positioning groove.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. The present invention can change the position of the positioning mechanism through the moving adjustment mechanism. A scale bar is provided on the outside of the injection tube, which is convenient for moving the adjustment mechanism to a suitable position. When inhaling the contrast agent, due to the cooperation between the positioning mechanism and the limit ring, the drawing rod can only move to a specified position, thereby ensuring the amount of inhaled contrast agent, avoiding excessive or insufficient inhalation and affecting the subsequent imaging effect after injection into the patient, facilitating adjustment according to the patient's condition, and improving the practicability.

[0020] 2. The present invention fixes the protective sleeve and the clamping tube through the second clamping mechanism, avoiding the protective sleeve falling off and exposing the needle tip when the needle is not in use. When using the needle, the fixation between the protective sleeve and the clamping tube is released, facilitating the removal of the protective sleeve and exposing the needle tip, improving the safety of use. Brief Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the side view structure of the present invention.

[0023] Figure 3 It is a schematic diagram of the structure of the adjustment mechanism of the present invention.

[0024] Figure 4 It is a schematic diagram of the structure of the positioning mechanism of the present invention.

[0025] Figure 5 It is a schematic diagram of the installation structure of the limit ring of the present invention.

[0026] Figure 6 It is a schematic diagram of the structure of the positioning groove opening of the present invention.

[0027] Figure 7 It is a schematic diagram of the installation structure of the protective sleeve of the present invention.

[0028] Figure 8 For the present invention Figure 7 The enlarged schematic diagram of part A.

[0029] Figure 9 It is a schematic diagram of the structure of the first clamping mechanism of the present invention.

[0030] Figure 10 It is a schematic diagram of the structure of the second clamping mechanism of the present invention.

[0031] Figure 11 It is a schematic diagram of the installation structure of the third spring of the present invention.

[0032] Annotation of reference numerals: 1, injection tube; 2, limiting plate; 3, piston; 4, pull rod; 5, pushing member; 6, limiting ring; 7, first limiting groove; 8, adjusting mechanism; 801, sliding sleeve; 802, knob; 803, mounting member; 9, positioning mechanism; 901, first gear; 902, second gear; 903, rotating member; 904, clamping member; 905, rack; 10, connecting tube; 11, first engaging mechanism; 1101, mounting groove; 1102, positioning bead; 1103, first spring; 12, engaging tube; 13, second limiting groove; 14, positioning groove; 15, protective sleeve; 16, second engaging mechanism; 1601, mounting sleeve; 1602, positioning rod; 1603, fixing ring; 1604, second spring; 17, sliding groove; 18, third spring. Detailed implementation mode

[0033] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0034] In one embodiment, as Figures 1 - 11 shown, a contrast agent injection control device includes an injection tube 1, one end of the injection tube 1 is fixedly connected with a limiting plate 2, a piston 3 is slidably installed inside the injection tube 1, a pull rod 4 is installed on one side of the piston 3, one end of the pull rod 4 is fixedly connected with a pushing member 5, a limiting ring 6 is fixedly connected to the outside of the pull rod 4, first limiting grooves 7 are symmetrically formed on the outside of the injection tube 1, an adjusting mechanism 8 is arranged on the outside of the injection tube 1, and a positioning mechanism 9 is arranged on the top of the adjusting mechanism 8.

[0035] In this embodiment, by moving the adjusting mechanism 8, the position of the positioning mechanism 9 can be changed. A scale bar is arranged on the outside of the injection tube 1 to facilitate moving the adjusting mechanism 8 to a suitable position. Hold the pushing member 5 and pull the pull rod 4 outwards. When the piston 3 moves outwards, suction is generated at the connecting tube 10, and the contrast agent is inhaled into the inside of the injection tube 1. Due to the cooperation between the positioning mechanism 9 and the limiting ring 6, the pull rod 4 can only move to a specified position, so as to ensure the amount of inhaled contrast agent, avoid inhaling too much or too little and affecting the subsequent contrast effect after injecting into the patient, and facilitate adjustment according to the patient's condition, improving the practicability.

[0036] In one embodiment, as Figure 1 and Figure 3As shown, the adjusting mechanism 8 includes a sliding sleeve 801. The sliding sleeve 801 is slidably mounted outside the injection tube 1 through a first limiting groove 7. A knob 802 is threadedly connected to the bottom of the sliding sleeve 801. Symmetrically fixed to the top of the sliding sleeve 801 are mounting members 803. When it is necessary to adjust the position of the sliding sleeve 801, loosen the knob 802. At this time, the sliding sleeve 801 can slide outside the injection tube 1. There are scales on the outside of the injection tube 1. Move the sliding sleeve 801 to the appropriate scale position and lock the knob 802, which is convenient for adjustment according to the actual situation of the patient.

[0037] In one embodiment, as Figure 4 、 Figure 5 and Figure 11 shown, the positioning mechanism 9 includes two first gears 901 and two second gears 902. The first gears 901 and the second gears 902 are rotatably mounted on the top of the mounting member 803, and the first gears 901 and the second gears 902 are meshed with each other. A rotating member 903 is fixedly installed on the outside of the second gear 902. A clamping member 904 is fixedly connected to the bottom of the rotating member 903, and the clamping member 904 is adapted to the pull rod 4. A rack 905 is meshed between the two first gears 901. A sliding groove 17 is formed on one side of the pushing member 5. One end of the rack 905 penetrates through the limiting plate 2 and is slidably mounted with the pushing member 5 through the sliding groove 17. A third spring 18 is installed on the top of the rack 905, and the third spring 18 is located inside the sliding groove 17. When the sliding sleeve 801 moves, it is necessary to lift the rack 905 upward. At this time, the third spring 18 is compressed, and the meshing between the rack 905 and the first gear 901 is released. The friction between the second gear 902 and the mounting member 803 is relatively large, and it will not move without external force. After the sliding sleeve 801 is adjusted, loosen the rack 905. Due to the reset action of the third spring 18, the rack 905 moves upward and meshes with the first gear 901. When it is necessary to suck the contrast agent into the injection tube 1, hold the pushing member 5 and pull out the piston 3 through the pull rod 4, and suck the contrast agent into the injection tube 1 through the connecting tube 10. During the movement of the pushing member 5, the rack 905 is driven to move. The movement of the rack 905 drives the first gear 901 to rotate. The rotation of the first gear 901 drives the second gear 902 to rotate. The rotation of the second gear 902 causes the two rotating members 903 to rotate, and the two racks 905 move closer to clamp the pull rod 4. The cooperation between the rack 905 and the limiting ring 6 makes the pull rod 4 unable to move further. The amount of contrast agent sucked into the injection tube 1 is fixed, which is convenient for use.

[0038] In one embodiment, as Figure 6 and Figure 7As shown, the other end of the injection tube 1 is fixedly connected to a connecting tube 10. A clamping tube 12 is slidably mounted on the outside of the connecting tube 10. A second limiting groove 13 adapted to the connecting tube 10 is formed in the inner wall of the clamping tube 12. A positioning groove 14 is formed in the top of the clamping tube 12. The second limiting groove 13 facilitates the positioning and sliding of the clamping tube 12 and the connecting tube 10, so as to ensure that the positioning bead 1102 can enter the inside of the positioning groove 14.

[0039] In one embodiment, as Figure 8 and Figure 9 shown, a first clamping mechanism 11 is provided inside the connecting tube 10. Mounting grooves 1101 are formed in both the top and the bottom of the connecting tube 10. The first clamping mechanism 11 includes positioning beads 1102 mounted inside the mounting grooves 1101. A first spring 1103 is provided on one side of the positioning bead 1102, and the first spring 1103 is located inside the mounting groove 1101. The positioning bead 1102 is adapted to the positioning groove 14. When the clamping tube 12 is moved outward relative to the connecting tube 10, since the positioning bead 1102 is circular, the positioning bead 1102 moves into the inside of the mounting groove 1101, and the first spring 1103 is compressed. When the positioning groove 14 is aligned with the positioning bead 1102, due to the resetting action of the first spring 1103, the positioning bead 1102 enters the inside of the positioning groove 14. The stiffness coefficient of the first spring 1103 is greater than that of the second spring 1604, so that the resetting force of the first spring 1103 is greater than the downward pressure of the second spring 1604, and the positioning bead 1102 pushes out the positioning rod 1602, so that the fixing of the protective sleeve 15 and the clamping tube 12 is released, facilitating the removal of the protective sleeve 15.

[0040] In one embodiment, as Figure 6 and Figure 7 shown, a protective sleeve 15 is sleeved on the outside of the clamping tube 12. One end of the clamping tube 12 is fixedly connected to a needle head, and the needle head is located inside the protective sleeve 15. The protective sleeve 15 effectively protects the clamping tube 12 and at the same time ensures that the clamping tube 12 will not be contaminated, improving the safety of use.

[0041] In one embodiment, as Figure 8 and Figure 10As shown in the figure, second engaging mechanisms 16 are provided at both the top and bottom of the protective sleeve 15. The second engaging mechanism 16 includes a mounting sleeve 1601 which is fixedly installed at the top and bottom of the protective sleeve 15. A positioning rod 1602 is slidably installed inside the mounting sleeve 1601. A fixing ring 1603 is fixedly connected to the outer portion of the positioning rod 1602. A second spring 1604 is sleeved on the outer portion of the positioning rod 1602 and on one side of the fixing ring 1603. The positioning rod 1602 is adapted to the positioning groove 14. Since the engaging tube 12 is provided with a chamfer, when the protective sleeve 15 is sleeved on the outer portion of the engaging tube 12, due to the chamfer, the positioning rod 1602 enters the inside of the mounting sleeve 1601, and the second spring 1604 is compressed. When the positioning rod 1602 is aligned with the positioning groove 14, due to the reset of the second spring 1604, the positioning rod 1602 is inserted into the inside of the positioning groove 14, thereby fixing the protective sleeve 15 and the engaging tube 12, avoiding the situation that the engaging tube 12 is exposed due to the protective sleeve 15 falling off during transportation or picking and placing. Since the engaging tube 12 is relatively sharp, being exposed is likely to cause contamination and injury to people, thus improving safety.

[0042] The working principle of the present invention is as follows: When it is necessary to adjust the position of the sliding sleeve 801 according to the actual situation of the patient, loosen the knob 802. At this time, the sliding sleeve 801 can slide on the outer portion of the injection tube 1, lift the rack 905 upward. At this time, the third spring 18 is compressed, and the engagement between the rack 905 and the first gear 901 is released. And the frictional force between the second gear 902 and the mounting member 803 is relatively large, and it will not move without external force. The outer portion of the injection tube 1 is provided with scales. Move the sliding sleeve 801 to a suitable scale position and lock the knob 802. Then loosen the rack 905. Due to the reset of the third spring 18, the rack 905 moves upward and engages with the first gear 901.

[0043] When installing the engaging tube 12, move the engaging tube 12 outward on the connecting tube 10. Since the positioning bead 1102 is circular, the positioning bead 1102 moves into the inside of the mounting groove 1101, and the first spring 1103 is compressed. When the positioning groove 14 is aligned with the positioning bead 1102, due to the reset of the first spring 1103, the positioning bead 1102 enters the inside of the positioning groove 14. And the spring constant of the first spring 1103 is greater than that of the second spring 1604, so that the reset force of the first spring 1103 is greater than the downward pressure of the second spring 1604. The positioning bead 1102 pushes out the positioning rod 1602, releasing the fixation between the protective sleeve 15 and the engaging tube 12, facilitating the removal of the protective sleeve 15 and exposing the needle tip.

[0044] Insert the needle into the contrast agent storage bottle. It is necessary to suck the contrast agent into the interior of the syringe tube 1. Hold the pusher 5 and pull out the piston 3 through the pull rod 4. Suck the contrast agent into the interior of the syringe tube 1 through the connecting tube 10. During the movement of the pusher 5, the rack 905 is driven to move. The movement of the rack 905 drives the first gear 901 to rotate. The rotation of the first gear 901 drives the second gear 902 to rotate. The rotation of the second gear 902 causes the two rotating members 903 to rotate. The two racks 905 move closer to clamp the pull rod 4. The cooperation between the rack 905 and the limit ring 6 makes the pull rod 4 unable to move further. The amount of contrast agent sucked into the interior of the syringe tube 1 is fixed, and then the contrast agent is injected into the patient's body.

[0045] Pull out the engagement tube 12 from the outside of the connecting tube 10. Since the engagement tube 12 is provided with a chamfer, when the protective sleeve 15 is sleeved on the outside of the engagement tube 12, the chamfer positioning rod 1602 enters the interior of the mounting sleeve 1601, and the second spring 1604 is compressed. When the positioning rod 1602 aligns with the positioning groove 14, the second spring 1604 resets to insert the positioning rod 1602 into the interior of the positioning groove 14, thereby fixing the protective sleeve 15 and the engagement tube 12, and preventing the protective sleeve 15 from falling off and the needle from being exposed to injure medical staff and cleaning staff.

[0046] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A contrast agent injection control device, comprising an injection tube (1), characterized in that: One end of the injection tube (1) is fixedly connected to a limit plate (2), a piston (3) is slidably mounted inside the injection tube (1), a pull rod (4) is mounted on one side of the piston (3), one end of the pull rod (4) is fixedly connected to a pusher (5), the outside of the pull rod (4) is fixedly connected to a limit ring (6), a first limit groove (7) is symmetrically provided on the outside of the injection tube (1), an adjustment mechanism (8) is provided on the outside of the injection tube (1), and a positioning mechanism (9) is provided on the top of the adjustment mechanism (8).

2. A contrast agent injection control device according to claim 1, characterized in that: The adjustment mechanism (8) comprises a sliding sleeve (801), wherein the sliding sleeve (801) is slidably mounted on the outside of the injection tube (1) via a first limiting groove (7), a knob (802) is threadedly connected to the bottom of the sliding sleeve (801), and a mounting piece (803) is symmetrically fixedly connected to the top of the sliding sleeve (801).

3. A contrast agent injection control device according to claim 2, characterized in that: The positioning mechanism (9) includes two first gears (901) and two second gears (902), wherein the first gears (901) and the second gears (902) are rotatably mounted on the top of the mounting member (803), and the first gears (901) and the second gears (902) are meshingly connected, a rotating member (903) is fixedly mounted on the outside of the second gear (902), a clamping member (904) is fixedly connected to the bottom of the rotating member (903), and the clamping member (904) is adapted to fit the pull rod (4), and a rack (905) is meshingly connected between the two first gears (901).

4. A contrast agent injection control device according to claim 3, characterized in that: A slide groove (17) is provided on one side of the pushing member (5); one end of the rack (905) passes through the limiting plate (2) and is slidably mounted with the pushing member (5) through the slide groove (17); a third spring (18) is mounted on the top of the rack (905), and the third spring (18) is located inside the slide groove (17).

5. A contrast agent injection control device according to claim 1, characterized in that: The other end of the injection tube (1) is fixedly connected to a connecting tube (10), a locking tube (12) is slidably mounted on the outside of the connecting tube (10), a second limiting groove (13) matching the connecting tube (10) is provided on the inner wall of the locking tube (12), and a positioning groove (14) is provided on the top of the locking tube (12).

6. A contrast agent injection control device according to claim 5, characterized in that: A first locking mechanism (11) is provided inside the connecting pipe (10).

7. A contrast agent injection control device according to claim 6, characterized in that: The top and the bottom of the connecting tube (10) are both provided with mounting grooves (1101), the first engaging mechanism (11) comprises a positioning bead (1102) installed inside the mounting groove (1101), a first spring (1103) is provided on one side of the positioning bead (1102), and the first spring (1103) is located inside the mounting groove (1101), and the positioning bead (1102) is adapted to the positioning groove (14).

8. A contrast agent injection control device according to claim 5, characterized in that: The outer sleeve of the locking tube (12) is provided with a protective sleeve (15), one end of the locking tube (12) is fixedly connected to a needle, and the needle is located inside the protective sleeve (15).

9. A contrast agent injection control device according to claim 8, characterized in that: The top and bottom of the protective cover (15) are both provided with a second locking mechanism (16).

10. A contrast agent injection control device according to claim 9, characterized in that: The second locking mechanism (16) comprises a mounting sleeve (1601), wherein the mounting sleeve (1601) is fixedly mounted on the top and bottom of the protective sleeve (15), a positioning rod (1602) is slidably mounted inside the mounting sleeve (1601), a fixing ring (1603) is fixedly connected to the outside of the positioning rod (1602), a second spring (1604) is sleeved on the outside of the positioning rod (1602) and located on one side of the fixing ring (1603), and the positioning rod (1602) is adapted to fit the positioning groove (14).

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