Injection pump for balloon catheter spraying machine

Abstract

The utility model relates to the technical field of spraying machines, in particular to an injection pump for a balloon catheter spraying machine, which comprises a rack, a driving motor is mounted on the right side of the rack, a driving rod is arranged on the rack, a driving frame is mounted on the driving rod in a sliding manner, and a clamping device for clamping a medicament tube is arranged on the rack; in the process that the driving grooved wheel rotates in the driving frame, the driving grooved wheel is meshed with a thread on the driving rod to rotate, so that the driving frame is driven to advance, the driving frame advances to drive a push rod part of a medicament tube to push a medicament to enter the spraying machine, and the spraying machine sprays the medicament into a balloon catheter through an internal atomizing nozzle; therefore, automatic quantitative medicine spraying of the balloon catheter is achieved, the situation that too much or too little medicine spraying of the balloon catheter affects use of the balloon catheter is avoided, the quality of the balloon catheter is improved, the qualified rate of the balloon catheter is increased, and the success rate of an operation on a coronary intervention patient is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of spraying machines, in particular to an injection pump for a balloon catheter spraying machine. Background Art

[0002] The balloon catheter drug spraying machine is a device for preparing drug coatings for balloon catheters. It uses spraying technology to accurately control the amount of drug applied and the uniformity of the spray coating. This equipment can be used for drug coating of various drug balloon catheters such as coronary balloons and peripheral balloons. The balloon catheter drugs sprayed by the sprayer use a syringe pump for quantitative drug spraying. Too little drug sprayed on each balloon catheter will affect the effect of coronary intervention surgery, and too much drug spraying will easily cause an immune response in the human body.

[0003] At present, when spraying drug coating on balloon catheters, workers set the appropriate time to spray the drug based on experience. There is a difference between the sprayed drug and the actual needs of the interventional surgery, resulting in unqualified product quality. When the existing spray machine sprays the drug, the motor moves to push the injection pump forward continuously, thereby spraying the drug on the balloon catheter. Workers determine the spraying time based on experience, and the spraying effect is poor. The injection pump needs to be optimized in design. Utility Model Content

[0004] The utility model aims to provide an injection pump for a balloon catheter sprayer, which can control the injection pump to quantitatively advance the amount of drug spraying step by step during the spraying process of the sprayer, thereby ensuring that the drug sprayed on each balloon catheter is the amount required for the actual operation of the balloon catheter, thereby ensuring the quality of the balloon catheter.

[0005] The utility model adopts the following technical scheme: the injection pump for a balloon catheter sprayer comprises a frame, a driving motor is installed on the right side of the frame, a driving rod is arranged on the frame, a driving frame is slidably installed on the driving rod, a clamping device for clamping a medicine tube is arranged on the frame, the left end of the driving frame can clamp the push rod end of the medicine tank, a driving groove wheel is rotatably installed inside the driving frame, the axis of the driving groove wheel is threadedly connected to the driving rod, and the driving motor drives the driving groove wheel to rotate through a transmission device.

[0006] A further solution of the utility model is that the transmission device includes a first gear rotatably mounted on a driving frame, the first gear is slidingly connected to the output shaft of a driving motor, a second gear is rotatably mounted inside the driving frame, the second gear is meshingly connected to the first gear, an eccentric shaft is provided on the second gear, and the eccentric shaft can be engaged with a hollow groove on the driving sheave during rotation.

[0007] A further solution of the utility model is that the output shaft of the driving motor is a long rod provided with a protrusion and passes through the center hole of the first gear, and the center hole of the first gear is a special-shaped hole.

[0008] A further solution of the utility model is that the clamping device includes a medicine tube placement slot arranged on the left side of the frame, and a fixing plate is arranged on the frame, and the fixing plate is connected to the frame by fixing bolts.

[0009] A further solution of the utility model is that a clamping plate is installed on the driving frame, and a clamping groove is provided on the clamping plate. The clamping groove fits with the middle part of the push rod of the medicine tube, and the clamping groove is clamped with the pushing part at the right end of the push rod.

[0010] A further solution of the utility model is that a guide rod is arranged on the frame, and the guide rod passes through a hole of the driving frame.

[0011] Beneficial effects of the utility model:

[0012] During the rotation of the driving groove wheel inside the driving frame, it engages and rotates with the thread on the driving rod, thereby driving the driving frame forward. The forward movement of the driving frame drives the push rod part of the medicine tube to push the medicine into the sprayer. The sprayer sprays the medicine into the balloon catheter through the internal atomizing nozzle, thereby realizing automatic quantitative drug spraying of the balloon catheter, avoiding excessive or insufficient drug spraying on the balloon catheter affecting the use of the balloon catheter, improving the quality and pass rate of the balloon catheter, and thus improving the success rate of coronary intervention surgery for patients; the guide rod prevents the driving frame from idling around the driving rod during the rotation of the driving groove wheel driven by the driving motor, thereby improving the smoothness of the sliding of the driving frame and preventing the driving frame from contacting the output shaft of the driving motor during the sliding process, thereby affecting the driving effect of the driving motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the overall structure diagram of the utility model;

[0014] Figure 2 This is the second structural diagram of the utility model;

[0015] Figure 3 This is a cross-sectional structural diagram of the drive frame of the utility model;

[0016] Figure 4 This is the exploded structural diagram of the drive frame of the utility model.

[0017] Figure numerals: 1, frame; 11, driving motor; 12, driving rod; 13, medicine tube placement slot; 14, fixing plate; 15, fixing bolt; 16, clamping plate; 17, guide rod; 2, driving frame; 21, driving groove wheel; 22, first gear; 23, second gear; 231, eccentric shaft. DETAILED DESCRIPTION

[0018] The present invention is described in detail below with reference to the accompanying drawings and embodiments:

[0019] Reference Figure 1-4 The utility model discloses a syringe pump for a balloon catheter spraying machine, comprising: a frame 1, a driving motor 11 is installed on the right side of the frame 1, a driving rod 12 is arranged on the frame 1, a driving frame 2 is slidably installed on the driving rod 12, a clamping device for clamping a medicine tube is arranged on the frame 1, the left end of the driving frame 2 can clamp the end of the push rod of the medicine tank, a driving groove wheel 21 is rotatably installed inside the driving frame 2, the axis of the driving groove wheel 21 is threadedly connected with the driving rod 12, and the driving motor 11 drives the driving groove wheel 21 to rotate through the transmission device. It should be noted that the driving motor 11 is a special servo motor that rotates a set number of circles after each start;

[0020] When spraying drugs on the balloon catheter, the balloon catheter is fixedly installed on the spray machine, and after the medicine tube is installed on the frame 1, the medicine tube is clamped and fixed by the clamping device, and the driving motor 11 drives the driving groove wheel 21 to rotate through the transmission device. During the rotation of the driving groove wheel 21 inside the driving frame 2, it engages and rotates with the thread on the driving rod 12, thereby driving the driving frame 2 forward. The forward movement of the driving frame 2 drives the push rod part of the medicine tube to push the medicine into the spray machine, and the spray machine sprays the medicine into the balloon catheter through the internal atomizing nozzle, thereby realizing automatic quantitative drug spraying of the balloon catheter, avoiding excessive or insufficient drug spraying on the balloon catheter affecting the use of the balloon catheter, improving the quality and qualification rate of the balloon catheter, and thus improving the success rate of coronary intervention surgery for patients.

[0021] The transmission device includes a first gear 22 rotatably mounted on the drive frame 2, the first gear 22 is slidably connected to the output shaft of the drive motor 11, and the output end of the drive motor 11 rotates to drive the first gear 22 to rotate. Since the first gear 22 is rotatably mounted on the drive frame 2, the drive frame 2 synchronously drives the first gear 22 to slide on the output shaft of the drive motor 11 during the sliding process along the axial direction of the drive rod 12. It should be noted that the output shaft of the drive motor 11 is a long rod provided with a protrusion and passes through the center hole of the first gear 22. The center hole of the first gear 22 is a special-shaped hole. The drive motor 11 can directly drive the first gear 22 to rotate through the protrusion during the process of driving the output shaft to rotate, so that the first gear 22 can slide on the output shaft of the drive motor 11 when the drive motor 11 drives the first gear 22 to rotate. A second gear 23 is rotatably mounted inside the drive frame 2, the second gear 23 is meshed with the first gear 22, and an eccentric shaft 231 is provided on the second gear 23. The eccentric shaft 231 can be engaged with the hollow groove on the drive sheave 21 during the rotation process.

[0022] The driving motor 11 drives the first gear 22 to rotate a set number of circles, and the first gear 22 drives the second gear 23 to rotate. The second gear 23 rotates and drives the driving groove wheel 21 to rotate a certain angle through the eccentric shaft 231. After the driving groove wheel 21 rotates a set angle, it is threadedly connected with the driving rod 12 to drive the driving frame 2 to slide a set distance to the left along the axial direction of the driving rod 12. The driving frame 2 slides along the axial direction of the driving rod 12. At the same time, when the driving motor 11 drives the first gear 22 to rotate, the driving frame 2 drives the first gear 22 to slide along the output shaft of the driving motor 11. The driving frame 2 slides to the left for a certain distance to drive the push rod of the medicine tube to push a certain amount. The agent enters the atomizing nozzle of the sprayer and is atomized before being sprayed toward the balloon catheter, thereby ensuring that the agent on the balloon catheter is the set amount of agent, avoiding the effect of too much or insufficient agent on the balloon catheter on the qualified rate of the balloon catheter. It should be particularly noted that the second gear 23 is meshed with the drive groove wheel 21 through the eccentric shaft 231, driving the drive groove wheel 21 to rotate, and in the process of disengagement of the eccentric shaft 231 from the drive groove wheel 21, the incomplete circular protrusion on the second gear 23 fits with the arc on the drive groove wheel 21, forming an interlocking fixation for the drive groove wheel 21, avoiding the drive groove wheel 21 from being deflected by external force during the process of disengagement from the eccentric shaft 231.

[0023] The clamping device includes a medicine tube placement slot 13 arranged on the left side of the frame 1, a fixing plate 14 is arranged on the frame 1, and the fixing plate 14 is connected to the frame 1 through a fixing bolt 15, so as to ensure that the tube portion of the medicine tube is clamped, and a clamping plate 16 is installed on the driving frame 2, and a clamping groove is arranged on the clamping plate 16, and the clamping groove is in contact with the middle part of the push rod of the medicine tube, and the clamping groove is clamped with the push part of the right end of the push rod, so that the driving frame 2 drives the push rod of the medicine tube to slide during the sliding process;

[0024] There is also a second embodiment of the clamping device, in which a fixed block is provided on the left side of the frame 1, and the fixed block is located on the upper and lower sides of the pipe portion of the medicine tube. The fixed block is connected to the frame 1 through a spring, and the spring is always in a compressed state, so that the fixed block is always in close fit with the pipe portion of the medicine tube, thereby ensuring the clamping effect of the medicine tube.

[0025] A guide rod 17 is provided on the frame 1, and the guide rod 17 passes through the hole of the driving frame 2. The guide rod 17 prevents the driving frame 2 from idling around the driving rod 12 during the rotation of the driving groove wheel 21 driven by the driving motor 11, thereby improving the smoothness of the sliding of the driving frame 2 and preventing the driving frame 2 from contacting the output shaft of the driving motor 11 during the sliding process, thereby affecting the driving effect of the driving motor 11.

[0026] It should be noted that a limit switch is provided on the left side of the driving rod 12. When the sliding frame 12 moves to contact the limit switch 12, the driving motor 11 stops moving, and the sprayer stops spraying the medicine and prompts to replace the medicine tube.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] The above description is only for illustrating the present invention, and it should be understood that the present invention is not limited to the above embodiments, and various variations that conform to the concept of the present invention are within the protection scope of the present invention.

Claims

1. A syringe pump for a balloon catheter spraying machine, comprising a frame (1), a drive motor (11) being mounted on the right side of the frame (1), characterized in that: The frame (1) is provided with a driving rod (12), and a driving frame (2) is slidably mounted on the driving rod (12). The frame (1) is provided with a clamping device for clamping a medicine tube. The left end of the driving frame (2) can clamp the end of a push rod of a medicine tank. A driving groove wheel (21) is rotatably mounted inside the driving frame (2). The axis of the driving groove wheel (21) is threadedly connected to the driving rod (12). The driving motor (11) drives the driving groove wheel (21) to rotate through a transmission device.

2. The syringe pump for a balloon catheter spraying machine according to claim 1, characterized in that: The transmission device comprises a first gear (22) rotatably mounted on a driving frame (2), the first gear (22) being slidably connected to an output shaft of a driving motor (11), a second gear (23) being rotatably mounted inside the driving frame (2), the second gear (23) being meshingly connected to the first gear (22), an eccentric shaft (231) being arranged on the second gear (23), and the eccentric shaft (231) being able to engage with a hollow groove on a driving sheave (21) during rotation.

3. The syringe pump for a balloon catheter spraying machine according to claim 2, characterized in that: The output shaft of the driving motor (11) is a long rod provided with a protrusion and passes through the center hole of the first gear (22); the center hole of the first gear (22) is a special-shaped hole.

4. The syringe pump for a balloon catheter spraying machine according to claim 1, characterized in that: The clamping device comprises a medicine tube placement slot (13) arranged on the left side of the frame (1); a fixing plate (14) is arranged on the frame (1); and the fixing plate (14) is connected to the frame (1) via fixing bolts (15).

5. The syringe pump for a balloon catheter spraying machine according to claim 4, characterized in that: A clamping sheet (16) is mounted on the driving frame (2), and a clamping slot is provided on the clamping sheet (16). The clamping slot fits in the middle part of the push rod of the medicine tube, and the clamping slot is clamped with the pushing part at the right end of the push rod.

6. The syringe pump for a balloon catheter spraying machine according to claim 1, characterized in that: The frame (1) is provided with a guide rod (17), and the guide rod (17) passes through a hole in the driving frame (2).

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