A medical infusion pipeline bubble detection device

Abstract

The invention discloses a medical infusion pipeline air bubble detection device, belonging to the technical field of infusion pipeline air bubble detection devices, which includes a bottom plate and a pressing plate hinged to one side of the bottom plate. Two groups of positioning plates are slidably assembled on the bottom plate. Through grooves are formed on both sides of the pressing plate. Ridge bars are slidably arranged in the through grooves, and a cross plate is fixedly arranged between the two ridge bars. The cross plate can slide along the height direction of the pressing plate relative to the pressing plate. A notch is formed on the top end face of the positioning plate; through the arranged limiting plate, when the infusion pipeline deforms to a certain extent, the clamping block can pop out and insert into the clamping groove, thereby locking the positioning plate and the pressing plate, and preventing the bottom plate and the pressing plate from approaching each other continuously. In actual operation, the device can be quickly clamped outside infusion pipelines of different sizes, and there is no need to observe the deformation amount of the infusion pipeline manually, avoiding the situation that the infusion pipeline is over-clamped or not clamped in place, and the overall operation is more convenient and safe.

Description

Technical Field

[0001] The present invention relates to the technical field of bubble detection devices for infusion tubes, and particularly to a bubble detection device for medical infusion pipelines. Background Art

[0002] During the clinical application of an infusion pipeline to treat patients, it is necessary to accurately and effectively detect the bubbles in the infusion pipeline to ensure the safety of patients. Currently, the mainstream bubble detection methods for infusion pumps and infusion sets on the market are all ultrasonic detection methods, and the structures are all in the form of clamping or supporting the infusion pipeline on both sides to ensure the ultrasonic conduction path.

[0003] Chinese invention patent CN102335476B discloses a bubble detection device, which solves the installation reliability problem of most infusion pipelines with different materials and sizes in the ultrasonic conduction path, making the ultrasonic bubble detection method more reliable and easy to use.

[0004] The above device clamps the ultrasonic sensor on both sides of the infusion tube by means of a spring provided. However, when dealing with infusion tubes of different sizes, it is obvious that there are problems with fixing by the spring. When the diameter of the infusion tube is large, the spring provided will excessively squeeze the infusion tube. On the contrary, the device cannot be stably clamped on the infusion tube. To sum up, the above device still has room for improvement.

[0005] Therefore, it is necessary to provide a bubble detection device for medical infusion pipelines to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a bubble detection device for medical infusion pipelines to solve the problem that in the existing device, the ultrasonic sensor is clamped on both sides of the infusion tube by means of a spring provided, but when dealing with infusion tubes of different sizes, it is obvious that there are problems with fixing by the spring. When the diameter of the infusion tube is large, the spring provided will excessively squeeze the infusion tube. On the contrary, the device cannot be stably clamped on the infusion tube, as mentioned in the above background art.

[0007] Based on the above idea, the present invention provides the following technical solution: A bubble detection device for medical infusion pipelines, including a bottom plate and a pressing plate hinged to one side of the bottom plate. Two sets of positioning plates are slidably assembled on the bottom plate. Through grooves are provided on both sides of the pressing plate. A convex strip is slidably arranged in the through groove, and a cross plate is fixedly arranged between the two convex strips. The cross plate can slide along the height direction of the pressing plate relative to the pressing plate. A notch is provided on the top end face of the positioning plate. When the pressing plate rotates relative to the bottom plate to a state parallel to the bottom plate, the top end of the positioning plate is inserted into the through groove, and the convex strip at the bottom of the cross plate can be inserted into the notch.

[0008] The part of the positioning plate near the top can be locked in the through groove through the clamping component, and a limiting plate is elastically installed on the inner side surface of the positioning plate. The convex strip is matched with the top part of the positioning plate through the extrusion component. When the cross plate moves relative to the pressing plate, the extrusion component between the convex strip and the positioning plate can promote the bottom plate and the pressing plate to gradually approach. When the deformed infusion tube presses the limiting plate, the part of the positioning plate near the top can be locked in the through groove through the clamping component.

[0009] As a further solution of the present invention: the clamping component includes clamping blocks elastically arranged on both side surfaces of the positioning plate. The clamping blocks are arranged opposite to the above-mentioned notch. An inserting block is arranged below the clamping block, and the inserting block is elastically matched with the positioning plate. A inserting groove matched with the inserting block is arranged on the bottom surface of the clamping block. A pulling rope is fixedly arranged between the side surface of the limiting plate and the inserting block. A plurality of clamping grooves matched with the clamping blocks are arranged on both inner side walls of the through groove.

[0010] As a further solution of the present invention: the extrusion component includes a top block elastically matched with the positioning plate. The top block is located at the inner wall of the notch. Push plates are hinged on both side surfaces of the convex strip. The hinged position of the push plate and the convex strip is between the top surface of the push plate and the side surface of the convex strip. Inclined extrusion surfaces are arranged on both the upper and lower sides of the top block close to the convex strip. During the process of the convex strip being inserted into the notch, the top block can extrude the push plate to deflect it upward. When the top block passes over the push plate, the push plate can deflect to a horizontal state.

[0011] As a further solution of the present invention: a rotating shaft is arranged at the bottom plate. Two sections of external threads with opposite helix directions are arranged on the outer side surface of the rotating shaft. The rotating shaft passes through the positioning plate and is in threaded connection with the positioning plate. A coil spring is arranged between the rotating shaft and the bottom plate.

[0012] As a further solution of the present invention: a groove slidably matched with the top block is arranged at the inner wall of the notch. A spring is fixedly arranged between the inner end surface of the groove and the top block. A strip-shaped limiting groove is arranged at the top wall of the groove. A limiting block elastically matched with the limiting groove is elastically installed on the top surface of the top block.

[0013] As a further solution of the present invention: a magnetic block is slidably arranged between the two extrusion surfaces of the top block. A traction rope is fixedly arranged between the magnetic block and the limiting block. A magnet matched with the magnetic block is fixedly embedded at the bottom surface of the push plate. When the cross plate drives the convex strip to move downward and contacts the extrusion surface above the top block, the push plate can deflect, so that the magnet on the push plate is aligned with the magnetic block on the top block. The opposite sides of the magnet and the magnetic block have different magnetic poles.

[0014] As a further solution of the present invention: an insertion strip is fixedly arranged at the end surface of the clamping block close to the top block, and the end surface of the insertion strip close to the top block is of an open structure. Protrusions are integrally formed at the top and bottom of the insertion strip, corresponding to the opening. The entire insertion strip structure is made of plastic material. A slot is formed at the end surface of the top block close to the insertion strip, and pressing blocks are integrally formed on the top surface and the bottom surface inside the slot.

[0015] As a further solution of the present invention: one end of the rotating shaft passes through the bottom plate, a stepped hole matching the rotating shaft is formed on the bottom plate, the coil spring is located outside the rotating shaft, and the two ends of the coil spring are respectively connected to the outer wall of the rotating shaft and the inner wall of the stepped hole.

[0016] As a further solution of the present invention: a plug rod is slidably arranged at the bottom plate, and a jack matching the plug rod is formed on the outer peripheral wall of the rotating shaft.

[0017] As a further solution of the present invention: a fixing plate is fixedly arranged at the bottom surface of the pressing plate, and a plug plate is elastically arranged at the top surface of the bottom plate. The plug plate is hinged to the fixing plate.

[0018] Compared with the prior art, the beneficial effect of the present invention is that: through the arranged limiting plate, when the infusion tube is deformed to a certain extent, the clamping block can pop out and be inserted into the clamping slot, so as to lock the positioning plate and the pressing plate, and prevent the bottom plate and the pressing plate from approaching each other continuously. In actual operation, the device can be quickly clamped outside infusion tubes of different sizes, and there is no need to observe the deformation amount of the infusion tube manually, avoiding the situation that the infusion tube is over-clamped or not clamped in place, and the overall operation is more convenient and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the drawings and embodiments.

[0020] Figure 1 is the schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is the three-dimensional structure diagram of the present invention;

[0022] Figure 3 is the schematic diagram of the through groove and the transverse groove structure of the present invention;

[0023] Figure 4 is the present invention Figure 3 of the enlarged structure diagram at A;

[0024] Figure 5 is the matching schematic diagram of the convex strip and the positioning plate of the present invention;

[0025] Figure 6 is the present invention Figure 5 of the enlarged structure diagram at B;

[0026] Figure 7 It is a schematic diagram of the cooperation between the knob and the vertical shaft of the present invention;

[0027] Figure 8 It is a schematic diagram of the plug rod structure of the present invention;

[0028] Figure 9 It is a schematic diagram of the structure of the limiting plate and the positioning plate of the present invention;

[0029] Figure 10 It is a schematic diagram of the connection structure between the bottom plate and the pressing plate of the present invention.

[0030] Figure 11 It is a schematic diagram of the positioning plate located between the bottom plate and the pressing plate of the present invention;

[0031] Figure 12 It is a schematic diagram of the cooperation between the push plate and the top block of the present invention;

[0032] Figure 13 It is a schematic diagram of the position of the cross plate and the convex strip located in the pressing plate of the present invention.

[0033] In the figure: 1. Bottom plate; 101. Plug board; 2. Rotating shaft; 3. Knob; 301. Positioning block; 4. Pressing plate; 401. Fixed plate; 402. Through groove; 4021. Card slot; 403. Cross groove; 5. Infusion tube; 6. Hanging rope; 7. Cross plate; 8. Vertical shaft; 801. Positioning groove; 9. Convex strip; 10. Pulling rope; 11. Positioning plate; 12. Limiting plate; 13. Block; 14. Diversion hole; 15. Insert bar; 1501. Convex block; 16. Limiting groove; 17. Limiting block; 18. Top block; 1801. Extrusion surface; 1802. Pressing block; 19. Magnet; 20. Traction rope; 21. Push plate; 22. Plug-in block; 23. Plug rod; 24. Torsion spring; 25. Notch; 26. Ultrasonic transmitting probe. Detailed implementation manners

[0034] As Figures 1 - 13 shown, a medical infusion pipeline air bubble detection device includes a bottom plate 1 and a pressing plate 4 arranged on one side of the bottom plate 1. The bottom plate 1 and the pressing plate 4 are hinged to each other. As Figure 1 shown, a ultrasonic transmitting probe 26 is installed on the side of the bottom plate 1 close to the pressing plate 4, and a corresponding ultrasonic receiving probe is installed on the surface of the pressing plate 4 close to the bottom plate 1. Through this mechanism, the air bubbles in the infusion tube 5 can be detected. Of course, this is only one way to detect air bubbles. Since the structure for detecting air bubbles is a mature technical means, the working principle thereof will not be elaborated herein.

[0035] Refer to Figures 1 - 2As shown, two groups of positioning plates 11 are slidably assembled on the bottom plate 1. During specific installation, the infusion tube 5 is placed between the bottom plate 1 and the pressing plate 4 and between the two groups of positioning plates 11. When the two groups of positioning plates 11 move to a state where they are in contact with the infusion tube 5, the sliding stops. Refer to Figures 3 - 6 As shown, through slots 402 are provided on both sides of the pressing plate 4. The through slots 402 are arranged along the height direction of the pressing plate 4. A convex strip 9 is slidably arranged in the through slots 402, and a cross plate 7 is fixedly arranged between the two convex strips 9. The cross plate 7 can slide along the height direction relative to the pressing plate 4. A notch 25 is provided on the top end face of the positioning plate 11. When the pressing plate 4 rotates relative to the bottom plate 1 to a state parallel to the bottom plate 1, the top end of the positioning plate 11 is inserted into the through slot 402, and the convex strip 9 at the bottom of the cross plate 7 can be inserted into the notch 25. During actual operation, the part of the positioning plate 11 near the top end can be locked in the through slot 402 through a clamping component, and a limiting plate 12 is elastically installed on the inner side surface of the positioning plate 11. The convex strip 9 cooperates with the top part of the positioning plate 11 through an extrusion component. When the cross plate 7 moves relative to the pressing plate 4, the extrusion component between the convex strip 9 and the positioning plate 11 can cause the bottom plate 1 and the pressing plate 4 to gradually approach. Through the cooperation of the bottom plate 1 and the pressing plate 4, the infusion tube 5 can be squeezed, so that the whole device is clamped outside the infusion tube 5. When the deformed infusion tube 5 squeezes the limiting plate 12, the part of the positioning plate 11 near the top end can be locked in the through slot 402 through the clamping component. After that, as the cross plate 7 continues to move upward, the convex strip 9 will be disengaged from the positioning plate 11, so that the distance between the bottom plate 1 and the pressing plate 4 remains stable, which is beneficial to stably clamping the bottom plate 1 and the pressing plate 4 outside the infusion tube 5. Of course, during specific operation, a hanging rope 6 can be fixed on the bottom plate 1. After the whole device is clamped outside the infusion tube 5, the hanging rope 6 can be hung on an infusion stand to reduce the load on the infusion tube 5.

[0036] The above clamping component includes clamping blocks 13 arranged on both side surfaces of the positioning plate 11. The clamping blocks 13 are elastically matched with the positioning plate 11, and the clamping blocks 13 are arranged opposite to the above-mentioned notch 25. A plugging block 22 is arranged below the clamping block 13. The plugging block 22 is elastically matched with the positioning plate 11, and a plugging slot matched with the plugging block 22 is provided on the bottom surface of the clamping block 13. In the initial state, the top end of the plugging block 22 is inserted into the plugging slot to lock the clamping block 13.

[0037] Furthermore, a pulling rope 10 is fixedly arranged between the side surface of the limiting plate 12 and the plugging block 22. The pulling rope 10 passes through the positioning plate 11 and is slidably matched with the positioning plate 11. When the infusion tube 5 is squeezed and deformed, the deformed infusion tube 5 will squeeze the limiting plate 12, so that the limiting plate 12 pulls the plugging block 22 through the pulling rope 10.

[0038] A plurality of card slots 4021 that cooperate with the card blocks 13 are provided on both inner side walls of the through slot 402, and the card slots 4021 are strip-shaped.

[0039] The extrusion assembly includes a top block 18 that elastically cooperates with the positioning plate 11. The top block 18 is located at the inner wall of the slot opening 25. Push plates 21 are hinged to both side surfaces of the rib 9, and the hinged positions of the push plates 21 and the rib 9 are between the top surface of the push plates 21 and the side surface of the rib 9. With this structure, in the initial state, the push plates 21 can only deflect upward relative to the rib 9. Refer to Figure 6 As shown, inclined extrusion surfaces 1801 are provided on both the upper and lower sides of one end of the top block 18 close to the rib 9. During the process of the rib 9 being inserted into the slot opening 25, the top block 18 will squeeze the push plates 21 to deflect them upward. When the top block 18 passes over the push plates 21, the push plates 21 can deflect to a horizontal state. Specifically, when the pressing plate 4 rotates relative to the bottom plate 1 to a state parallel to the bottom plate 1, the top end face of the positioning plate 11 contacts the bottom surface of the cross plate 7, and the push plates 21 can be located below the top block 18.

[0040] In order to drive the cross plate 7 to move relative to the pressing plate 4, a knob 3 is rotatably installed on the side of the pressing plate 4 away from the bottom plate 1. Refer to Figures 1 - 5 As shown, a vertical shaft 8 is connected to the top end face of the cross plate 7. The vertical shaft 8 is rotationally matched with the cross plate 7, and the vertical shaft 8 cannot move along the height direction of the cross plate 7 relative to the cross plate 7. The vertical shaft 8 passes through the pressing plate 4 and is in threaded cooperation with the pressing plate 4, and the top end of the vertical shaft 8 extends to the knob 3. Specifically, a positioning groove 801 is provided on the outer peripheral surface of the vertical shaft 8 near the top end, and a circular hole is provided on the bottom end face of the knob 3. A positioning block 301 that is slidably matched with the positioning groove 801 is fixedly provided on the inner wall of the circular hole.

[0041] Refer to Figure 1 、 Figure 8 As shown, in order to drive the positioning plate 11 to move, a rotating shaft 2 is provided at the bottom plate 1. Combining Figure 1 As shown, a sliding groove is provided on the surface of the bottom plate 1 close to the pressing plate 4. The cross-section of the part of the positioning plate 11 close to the bottom end and the cross-section of the sliding groove are both set to be T-shaped, so that the two positioning plates 11 on the same side can be slidably matched with the bottom plate 1. The above-mentioned rotating shaft 2 is located in the sliding groove and is rotationally matched with the bottom plate 1. Two sections of external threads with opposite helix directions are provided on the outer side surface of the rotating shaft 2. The rotating shaft 2 passes through the positioning plate 11 and is in threaded connection with the positioning plate 11, so that the two positioning plates 11 can be driven to approach or move away from each other during the rotation of the rotating shaft 2. A coil spring 24 is provided between the rotating shaft 2 and the bottom plate 1 to promote the rotation of the rotating shaft 2.

[0042] In actual use, the infusion tube 5 is placed between the bottom plate 1 and the pressing plate 4 and between the two sets of positioning plates 11, and the pressing plate 4 is rotated to make it parallel to the bottom plate 1. During this process, the top portion of the positioning plate 11 is inserted into the through groove 402, and the convex strip 9 can be inserted into the notch 25 at the top of the positioning plate 11. According to the above analysis, when the top surface of the positioning plate 11 contacts the cross plate 7, the top block 18 can pass over the push plate 21, so that the push plate 21 is in a horizontal state and is placed below the top block 18. The coil spring 24 drives the shaft 2 to rotate. During the rotation of the shaft 2, the two positioning plates 11 in the slide groove can be driven to gradually move closer to the infusion tube 5. When the limit plate 12 on the inner side of the positioning plate 11 contacts the infusion tube 5, the infusion tube 5 blocks the positioning plate 11 to prevent the positioning plate 11 from moving further. At this time, the knob 3 is turned to synchronously drive the vertical shaft 8 to rotate. Since the vertical shaft 8 is threadedly matched with the pressing plate 4, the vertical shaft 8 can drive the horizontal plate 7 to move outward relative to the pressing plate 4 during the rotation of the vertical shaft 8, and the horizontal plate 7 In the process of driving the convex strip 9 to move, the positioning plate 11 can be pulled by the cooperation between the push plate 21 and the top block 18, so that the bottom plate 1 and the pressure plate 4 gradually move closer. In this process, the infusion tube 5 is squeezed and deformed, and the deformed infusion tube 5 can compress the limit plate 12 into the positioning plate 11. The limit plate 12 can pull the pull rope 10 during the movement relative to the positioning plate 11. The pull rope 10 can pull the top of the plug-in block 22 out of the plug-in slot, so that the card block 13 can pop out. When the card block 13 is in the strip-shaped card slot 4 021 are aligned, the card block 13 can pop out and be inserted into the card slot 4021, so that the positioning plate 11 and the pressure plate 4 are locked with each other. At this time, in the process of turning the knob 3 to drive the cross plate 7 and the convex strip 9 to move upward, the push plate 21 will squeeze the top block 18, so that the top block 18 shrinks into the positioning plate 11. When the push plate 21 passes over the top block 18, the convex strip 9 and the positioning plate 11 are disengaged, so that the distance between the bottom plate 1 and the pressure plate 4 remains stable. At this point, the entire device can be clamped on the outside of the infusion tube 5.

[0043] To summarize, this device uses the limit plate 12 to set up, so when the infusion tube 5 undergoes a certain degree of deformation, the card block 13 can pop out and be inserted into the card slot 4021, thereby locking the positioning plate 11 and the pressure plate 4 to prevent the bottom plate 1 and the pressure plate 4 from continuing to get closer. In actual operation, the device can quickly clamp on the outside of infusion tubes 5 of different sizes, and there is no need to manually observe the deformation of the infusion tube 5, thereby avoiding the infusion tube 5 from being over-clamped or under-clamped, and the overall operation is more convenient and safe.

[0044] As a further expansion of the above solution, in this solution, a groove that slidably cooperates with the top block 18 is provided on the inner wall of the notch 25. A spring is fixedly arranged between the inner end face of the groove and the top block 18. A strip-shaped limiting groove 16 is provided on the top wall of the groove, and a limiting block 17 that cooperates with the limiting groove 16 is elastically installed on the top surface of the top block 18;

[0045] As Figure 6 shown, the horizontal plane is between the two pressing surfaces 1801 on the top block 18, and a magnetic block 19 is slidably arranged on the horizontal plane between the two pressing surfaces 1801. A traction rope 20 is fixedly arranged between the magnetic block 19 and the limiting block 17. The traction rope 20 passes through the top block 18 and slidably cooperates with the top block 18. A magnet that cooperates with the magnetic block 19 can be fixedly embedded on the bottom surface of the push plate 21. Referring to Figure 12 shown, when the cross plate 7 drives the convex strip 9 to move downward and contact the upper pressing surface 1801 of the top block 18, the push plate 21 can deflect, so that the magnet on the push plate 21 is aligned with the magnetic block 19 on the top block 18, and the opposite sides of the magnet and the magnetic block 19 have different magnetic poles;

[0046] Referring to Figure 6 shown, an insertion strip 15 is fixedly arranged at the end face of the clamping block 13 close to the top block 18. The end face of the insertion strip 15 close to the top block 18 is an open structure. Convex blocks 1501 are integrally formed at the top and bottom of the insertion strip 15, and the convex blocks 1501 correspond to the opening. The entire structure of the insertion strip 15 is made of plastic material. A slot is provided at the end face of the top block 18 close to the insertion strip 15, and pressing blocks 1802 are integrally formed at the top and bottom surfaces inside the slot;

[0047] In actual use, during the process of the push plate 21 cooperating with the extrusion surface 1801 to drive the top block 18 to move upward, the top block 18 can slide into the groove, and the limiting block 17 on the top block 18 can pop out and insert into the limiting groove 16. As the top block 18 moves into the groove, one end of the insertion strip 15 can insert into the slot, and the pressing block 1802 on the inner wall of the slot can pass over the convex block 1501. When the push plate 21 passes over the top block 18, the top block 18 can pop out again. However, when the limiting block 17 contacts the end face of the limiting groove 16, the top block 18 stops moving. At this time, the pressing block 1802 is located on the side of the convex block 1501 close to the clamping block 13. When it is necessary to remove the whole device from the infusion tube 5, the knob 3 can be rotated reversely to drive the cross plate 7 and the convex strip 9 to move inward relative to the pressing plate 4. As the convex strip 9 moves downward, the push plate 21 can cooperate with the extrusion surface 1801 above the top block 18, causing the push plate 21 to deflect and finally deflect to a state substantially parallel to the magnet 19. The attractive force between the magnet 19 and the magnet on the push plate 21 can pull the traction rope 20. Through the traction rope 20, one end of the limiting block 17 can be moved out of the limiting groove 16, so that the top block 18 can pop out further. When the push plate 21 moves downward and gradually passes over the top block 18, the top block 18 can pop out and drive the clamping block 13 to contract into the positioning plate 11 through the cooperation of the slot and the insertion strip 15, so that the clamping block 13 can move out of the clamping slot 4021, which is beneficial to the pressing plate 4 to deflect outward relative to the bottom plate 1 and reset, so that the whole device can be removed from the infusion tube 5.

[0048] In summary, through this structure, when the knob 3 is rotated reversely, the bottom plate 1 and the pressing plate 4 can be quickly removed from the infusion tube 5, and the overall operation is relatively convenient.

[0049] A diversion hole 14 communicating with the groove can be opened on the positioning plate 11, and the top block 18 and the groove can be sealed and matched. Through this structure, when the push plate 21 passes downward over the top block 18, the top block 18 can slowly pop out, so that sufficient time can be reserved to remove the bottom plate 1 and the pressing plate 4 from the infusion tube 5.

[0050] Refer to Figure 1 、 Figure 8As shown, one end of the rotating shaft 2 passes through the bottom plate 1, and the part where the rotating shaft 2 is connected to the bottom plate 1 is a smooth rod structure. A stepped hole matching the rotating shaft 2 is provided on the bottom plate 1. The above-mentioned torsion spring 24 is located outside the rotating shaft 2, and both ends of the torsion spring 24 are respectively connected to the outer wall of the rotating shaft 2 and the inner wall of the stepped hole. In addition, a plug rod 23 is slidably arranged at the bottom plate 1. A jack matching the plug rod 23 is provided on the outer peripheral wall of the rotating shaft 2. During actual use, when the plug rod 23 is pulled out so that one end of it is disengaged from the jack, the rotating shaft 2 can be driven to rotate by the torsion spring 24. When the positioning plate 11 contacts the infusion tube 5, the torsion spring 24 can be prevented from continuing to unwind by the blocking of the infusion tube 5 on the positioning plate 11.

[0051] Combined with Figure 2 、 Figure 10 As shown, a fixing plate 401 is fixedly arranged on the bottom surface of the pressing plate 4, and a plug plate 101 is elastically arranged on the top surface of the bottom plate 1. The plug plate 101 and the fixing plate 401 are hinged to each other to realize the rotational cooperation between the bottom plate 1 and the pressing plate 4. Specifically, a strip-shaped groove for slidingly matching the plug plate 101 is provided on the bottom plate 1, and a limiting spring is fixedly arranged between the inner bottom surface of the strip-shaped groove and the plug plate 101.

[0052] Referring to Figure 3 As shown, a transverse groove 403 is provided between the two through grooves 402 on the pressing plate 4, and the transverse groove 403 is communicated with the through grooves 402. The above-mentioned transverse plate 7 is slidably arranged in the transverse groove 403.

[0053] Referring to Figure 6 As shown, a notch is provided on the side wall of the convex strip 9 close to the push plate 21, and the notch is located above the push plate 21. An arc-shaped spring is fixedly arranged between the inner end surface of the notch and the push plate 21.

[0054] A first installation groove for sliding the magnetic block 19 is provided on the top block 18 between the two extrusion surfaces 1801, and a rectangular groove for slidingly matching the limiting block 17 is provided on the top block 18. A first spring is fixedly arranged between the inner end surface of the rectangular groove and the limiting block 17.

[0055] A receiving groove for slidingly matching the clamping block 13 is provided on the positioning plate 11. The above-mentioned inserting strip 15 passes through the positioning plate 11 and is slidably matched with it. A return spring is fixedly arranged between the inner end surface of the receiving groove and the clamping block 13.

[0056] A second installation groove for sliding the inserting block 22 is provided on the inner bottom surface of the receiving groove. A second spring is fixedly arranged between the inner end surface of the second installation groove and the inserting block 22.

[0057] Referring to Figure 9 As shown, a limiting groove 16 for slidingly matching the limiting plate 12 is provided on the positioning plate 11. A pressing spring is fixedly arranged between the inner end surface of the limiting groove 16 and the limiting plate 12.

Claims

1. A medical infusion pipeline air bubble detection device, comprising a bottom plate and a pressing plate hinged to one side of the bottom plate. Two groups of positioning plates are slidably assembled on the bottom plate. Through grooves are formed on both sides of the pressing plate. A convex strip is slidably arranged in the through groove, and a transverse plate is fixedly arranged between the two convex strips. The transverse plate can slide along the height direction of the pressing plate relative to the pressing plate, and is characterized in that: A notch is formed on the top end face of the positioning plate. When the pressing plate rotates relative to the bottom plate to a state parallel to the bottom plate, the top end of the positioning plate is inserted into the through groove, and the convex strip at the bottom of the cross plate can be inserted into the notch. The part of the positioning plate near the top end can be locked in the through groove through a clamping component, and a limiting plate is elastically installed on the inner side surface of the positioning plate. The convex strip cooperates with the top part of the positioning plate through a pressing component. When the cross plate moves relative to the pressing plate, the pressing component between the convex strip and the positioning plate can cause the bottom plate and the pressing plate to gradually approach. When the deformed infusion tube presses the limiting plate, the part of the positioning plate near the top end can be locked in the through groove through the clamping component. The clamping component includes clamping blocks elastically arranged on both side surfaces of the positioning plate. The clamping blocks are arranged opposite to the notch. An insertion block is arranged below the clamping block, and the insertion block is elastically matched with the positioning plate. A insertion groove matched with the insertion block is formed on the bottom surface of the clamping block. A pull rope is fixedly arranged between the side surface of the limiting plate and the insertion block. A plurality of clamping grooves matched with the clamping blocks are formed on both inner side walls of the through groove. The pressing component includes a top block elastically matched with the positioning plate. The top block is located at the inner wall of the notch. Push plates are hinged on both side surfaces of the convex strip. The hinged position of the push plate and the convex strip is between the top surface of the push plate and the side surface of the convex strip. Inclined pressing surfaces are arranged on both the upper and lower sides of the top block close to the convex strip. During the process of the convex strip being inserted into the notch, the top block can press the push plate to deflect upward. When the top block passes over the push plate, the push plate can deflect to a horizontal state. A rotating shaft is arranged on the bottom plate. Two sections of external threads with opposite helix directions are arranged on the outer side surface of the rotating shaft. The rotating shaft passes through the positioning plate and is in threaded connection with the positioning plate, so that the two positioning plates can be driven to approach or separate from each other during the rotation of the rotating shaft. A torsion spring is arranged between the rotating shaft and the bottom plate. A groove slidably matched with the top block is formed on the inner wall of the notch. A spring is fixedly arranged between the inner end face of the groove and the top block. A strip-shaped limiting groove is formed on the top wall of the groove. A limiting block matched with the limiting groove is elastically installed on the top surface of the top block.

2. The bubble detection device for a medical infusion pipeline according to claim 1, wherein: A magnetic block is slidably arranged between the two pressing surfaces of the top block. A traction rope is fixedly arranged between the magnetic block and the limiting block. A magnet matched with the magnetic block is fixedly embedded on the bottom surface of the push plate. When the cross plate drives the convex strip to move downward and contact with the upper pressing surface of the top block, the push plate can deflect, so that the magnet on the push plate is aligned with the magnetic block on the top block. The opposite surfaces of the magnet and the magnetic block have different magnetic poles.

3. The bubble detection device for a medical infusion pipeline according to claim 1, wherein: An insertion strip is fixedly arranged on the end face of the clamping block close to the top block. The end face of the insertion strip close to the top block is of an open structure. Convex blocks are integrally formed on both the top and bottom of the insertion strip, and the convex blocks correspond to the opening. The whole insertion strip structure is made of plastic. A slot is formed on the end face of the top block close to the insertion strip. Pressing blocks are integrally formed on both the top and bottom inner surfaces of the slot.

4. The bubble detection device for a medical infusion pipeline according to claim 1, wherein: One end of the rotating shaft passes through the bottom plate. A stepped hole matched with the rotating shaft is formed on the bottom plate. The torsion spring is located outside the rotating shaft, and both ends of the torsion spring are respectively connected with the outer wall of the rotating shaft and the inner wall of the stepped hole.

5. The bubble detection device for a medical infusion pipeline according to claim 1, wherein: A plug rod is slidably arranged at the bottom plate, and a jack matching the plug rod is formed in the outer peripheral wall of the rotating shaft.

6. The bubble detection device for a medical infusion pipeline according to claim 1, wherein: A fixing plate is fixedly arranged on the bottom surface of the pressing plate, and a plug board is elastically arranged on the top surface of the bottom plate. The plug board is hinged to the fixing plate.

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