A tube sealing apparatus

Abstract

The application discloses a flushing and sealing pipe device in the technical field of medical auxiliary devices, which comprises a liquid supply component, a driving pump and a hose. The liquid supply component is installed on the pump shell of the driving pump, which improves the integration of the flushing and sealing pipe device and makes the flushing and sealing pipe device convenient to store or carry. The two ends of the hose are respectively connected with the liquid supply component and the intravenous catheter, and the middle part of the hose is arranged in the interior of the pump shell, so that the hose does not need to be disconnected with the intravenous catheter for multiple times for sucking liquid, the number of interface exposure is significantly reduced, and the risk of intravenous catheter pollution is significantly reduced. The rotary pump head in the interior of the pump shell extrudes the hose, so that the liquid in the liquid supply component flows to the intravenous catheter to flush and seal the pipe. The steps of sucking, disinfecting, exhausting, bolus injection and the like are omitted, the flushing and sealing pipe operation is more convenient and fast, the artificial operation time is reduced, and the threshold of the flushing and sealing pipe operation is lowered.

Description

Technical Field

[0001] This invention belongs to the field of medical auxiliary device technology, specifically relating to a tube-filling and sealing device. Background Technology

[0002] In clinical practice, intravenous catheters are commonly used to deliver medications. During infusion, drug reactions or blood reflux into the catheter can cause drug deposits or thrombi to form and block the catheter. To ensure successful intravenous infusion, a flushing and sealing procedure is necessary. This involves flushing and sealing the catheter. Flushing involves injecting fluid into the catheter to remove residual medication, blood, or secretions, ensuring the catheter lumen remains patent. Sealing, on the other hand, involves injecting a certain amount of fluid into the catheter after the infusion has stopped and clamping the catheter clamp. This creates a fluid seal within the catheter, preventing blood reflux into the catheter.

[0003] Current flushing and sealing procedures require frequent use of syringes to aspirate fluid and inject it into the intravenous catheter. This process necessitates sterilizing the catheter connector, performing syringe aspiration, air removal, and dosage verification. Furthermore, repeatedly disconnecting the existing infusion tubing from the catheter and then reconnecting the syringe increases the time the catheter interface is exposed to air, raising the risk of contamination. Therefore, performing routine flushing or sealing procedures demands a high level of skill from the operator. Generally, only specially trained healthcare personnel can correctly use syringes for flushing or sealing. Additionally, because routine syringe flushing and sealing makes it difficult to control the pressure and technique, even for trained personnel, human factors still play a significant role. All patients must undergo flushing and sealing under the supervision of healthcare professionals; the frequent procedures place considerable workload on medical staff and cause significant inconvenience to patients. Summary of the Invention

[0004] To achieve the above objectives, the present invention discloses a tube sealing device, comprising:

[0005] The liquid supply unit is configured to store liquid for flushing the sealing tube;

[0006] A drive pump includes a pump housing and a rotary pump head, wherein the liquid supply component is mounted on the pump housing, and the rotary pump head is rotatably disposed within the inner cavity of the pump housing; and

[0007] A flexible tube, one end of which is connected to the fluid supply component, and the other end of which is used to connect to a venous catheter connected to a human blood vessel; the middle part of the flexible tube is inserted into the inner cavity, and the rotary pump head is used to squeeze the flexible tube when rotating, so that the liquid in the fluid supply component flows to the venous catheter for flushing and sealing.

[0008] As an optional implementation, the pump housing also has an opening communicating with the inner cavity and the outside. The sealing tube device also includes a cap, which is movably connected to the pump housing and disposed at the opening. The hose passes through the inner cavity along the outer periphery of the rotary pump head, and at least a portion of the hose is located between the rotary pump head and the cap. The portion of the hose located between the rotary pump head and the cap is a compression section.

[0009] When the cap moves away from the opening, the squeezed section of the hose is exposed from the opening;

[0010] When the cap covers the opening, the rotary pump head and the cap together squeeze the squeezed section of the hose.

[0011] As an optional implementation, the drive pump further includes a control element, a portion of which is disposed outside the pump housing, and another portion of which passes through the pump housing and is connected to the rotary pump head to maintain circumferential fixation with the rotary pump head.

[0012] As an optional implementation, the control component includes a knob and a ratchet, the knob being connected to the ratchet, the pump housing having a positioning groove, and the ratchet being disposed within the positioning groove, so that the ratchet can only rotate unidirectionally relative to the pump housing in a preset direction.

[0013] As an optional implementation, the ratchet has at least two arc-shaped retaining strips on its outer periphery, and one end of the arc-shaped retaining strip near the inner wall of the positioning groove has a barb; the inner wall of the positioning groove has multiple evenly spaced steps, and the barb abuts against the steps, so that the ratchet rotates unidirectionally relative to the pump housing in a preset direction.

[0014] As an optional implementation, the flushing and sealing device further includes a hydraulic detection mechanism; the hydraulic detection mechanism includes an interconnected outer shell and a first connector, one end of the first connector is connected to the hose, and the other end is used to connect to the venous catheter, the port of the outer shell is connected to the first connector, and the outer wall of the outer shell is provided with a plurality of first scale values ​​along the length direction of the outer shell, the first scale values ​​are used to indicate the hydraulic pressure value in the hose, and / or the first scale values ​​are used to indicate the liquid volume value in the outer shell.

[0015] As an optional implementation, the outer shell is transparent, and a first piston is provided inside the outer shell on the side near the opening of the tube. A first elastic member is provided between the first piston and the bottom wall of the outer shell, and the first elastic member is used to abut against the bottom wall of the outer shell and the first piston respectively.

[0016] As an optional implementation, an elastic diaphragm is provided inside the housing on the side near the opening of the tube. When liquid in the hose enters the housing, the liquid causes the elastic diaphragm to gradually expand.

[0017] As an optional implementation, the outer casing is provided with a window, and the outer wall of the outer casing is provided with the first scale value along the length direction of the window; a second piston is provided inside the outer casing near the pipe opening, and a second elastic element is provided between the second piston and the bottom wall of the outer casing; a moving rod is provided on the side of the second piston away from the pipe opening, and the side of the moving rod away from the second piston rod is slidably connected to the window, and an indicator protrusion is provided at the end of the moving rod near the window, the indicator protrusion being used to indicate the corresponding first scale value.

[0018] As an optional implementation, the sealing tube device further includes a strap, the two ends of which are respectively connected to opposite sides of the pump housing.

[0019] As an optional implementation, the flushing and sealing device further includes a liquid dispensing mechanism, which includes a second connector, a third connector, and a fourth connector; the second connector is used to connect to an external liquid source, the third connector is used to connect to the tubing, and the fourth connector is used to connect to the intravenous catheter; the liquid dispensing mechanism is configured to control the opening and closing of the liquid delivery path between the second connector and the fourth connector or between the third connector and the fourth connector.

[0020] As an optional implementation, the third connector is provided with an anti-reverse valve, which is configured to allow the liquid in the hose to flow unidirectionally into the venous catheter when the hydraulic pressure in the third connector reaches a preset value.

[0021] As an optional implementation, the liquid dispensing mechanism includes a three-way valve, which is connected to the second connector, the third connector, and the fourth connector; the three-way valve is equipped with a switch, which, when rotated, connects the second connector to the fourth connector or the third connector to the fourth connector.

[0022] As an optional implementation, the liquid dispensing mechanism includes a branch pipe, which includes a main pipe and a branch pipe; the two ends of the main pipe are respectively connected to the second connector and the fourth connector, one end of the branch pipe is connected to the third connector, and the other end is connected to the main pipe; the branch pipe is provided with a first pipe clamp, and the main pipe is provided with a second pipe clamp on the side near the second connector.

[0023] As an optional implementation, the liquid supply component is provided with a silicone valve on the side near the hose, and the hose is provided with a fifth connector corresponding to the silicone valve. The fifth connector is screwed onto the liquid supply component, so that a portion of the fifth connector passes through the silicone valve to connect the liquid supply component and the hose.

[0024] As an optional implementation, the liquid supply component is a liquid storage pipe, the pump housing is provided with a fixed compartment for placing the liquid storage pipe, and the side of the fixed compartment is provided with an openable side cover.

[0025] As an optional implementation, a third piston is provided inside the liquid storage tube. When the liquid in the liquid storage tube flows to the hose, the third piston moves toward the hose under the action of atmospheric pressure.

[0026] As an optional implementation, the end face of the liquid storage tube away from the flexible tube is provided with a bacterial-proof and breathable membrane; the bacterial-proof and breathable membrane is configured to be breathable and block pathogens.

[0027] As an optional implementation, the liquid supply component is a liquid storage bag, which is connected to the hose; the pump housing is provided with a receiving cavity for placing the liquid storage bag.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] (1) The two ends of the hose are connected to the fluid supply component and the intravenous catheter, respectively, and the middle part passes through the inside of the pump housing. It is not necessary to disconnect from the intravenous catheter multiple times for fluid aspiration, which significantly reduces the number of times the interface is exposed and significantly reduces the risk of intravenous catheter contamination.

[0030] (2) The drive pump continuously squeezes the tubing by rotating the pump head, automatically pushing the fluid into the intravenous catheter, eliminating the need for air release and injection. This makes the flushing and sealing operation simpler and faster, reducing manual operation time.

[0031] (3) The liquid supply component is installed in the pump casing. This improves the integration of the flushing and sealing equipment, making it easier to store or carry. Users can complete the flushing and sealing process simply by installing the liquid supply component and starting the pump, eliminating the need for suction and disinfection steps and lowering the barrier to entry for flushing and sealing operations. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1This is a structural diagram of the drive pump, liquid storage tube, and intravenous catheter of the present invention;

[0034] Figure 2 This is an exploded view of the drive pump and hose of the present invention;

[0035] Figure 3 This is an exploded view of the drive pump of the present invention;

[0036] Figure 4 This is an assembly diagram of the hose and drive pump of the present invention;

[0037] Figure 5 This is an exploded view of the control component of the present invention;

[0038] Figure 6 This is a cross-sectional view of the control component and pump housing of the present invention;

[0039] Figure 7 This is an exploded view of the rotary pump head of the present invention;

[0040] Figure 8 This is a cross-sectional view of the control component and the rotary pump head of the present invention;

[0041] Figure 9 This is a structural diagram of the hydraulic detection mechanism of the present invention;

[0042] Figure 10 This is a first structural diagram of the outer casing of the present invention;

[0043] Figure 11 This is a cross-sectional view of the first embodiment of the housing of the present invention;

[0044] Figure 12 This is a cross-sectional view of a second embodiment of the housing of the present invention;

[0045] Figure 13 This is a second structural diagram of the outer casing of the present invention;

[0046] Figure 14 This is a cross-sectional view of a third embodiment of the housing of the present invention;

[0047] Figure 15 This is a structural diagram of the assembly strap of the stamping and sealing pipe equipment of the present invention;

[0048] Figure 16 This is a first assembly drawing of the drive pump, hose and liquid dispensing mechanism of the present invention;

[0049] Figure 17 This is a second assembly diagram of the drive pump, hose, and liquid dispensing mechanism of the present invention;

[0050] Figure 18 This is a cross-sectional view of the drive pump, hose, and liquid dispensing mechanism of the present invention;

[0051] Figure 19 yes Figure 18 Enlarged view of point A in the middle;

[0052] Figure 20 This is an exploded view of the liquid storage tube and the drive pump of the first structure of the present invention.

[0053] Figure 21 This is a cross-sectional view of the liquid storage tube of the present invention;

[0054] Figure 22 This is a cross-sectional view of the liquid storage tube and the fifth connector of the present invention;

[0055] Figure 23 This is a structural diagram of the drive pump, liquid storage tube, and intravenous catheter of the second structure of the present invention;

[0056] Figure 24 This is an exploded view of the drive pump of the second structure of the present invention;

[0057] Figure 25 This is an exploded view of the drive pump and liquid storage bag of the second structure of the present invention;

[0058] Figure 26 This is a cross-sectional view of the liquid storage bag of the present invention;

[0059] Figure 27 This is a thumbnail view of the drive pump of the present invention from the front view.

[0060] Figure 28 This is an assembly structure diagram of the drive pump and the liquid storage bag in the third structure of the present invention;

[0061] Figure 29 This is a cross-sectional view of the drive pump and the liquid storage bag of the third structure of the present invention.

[0062] Explanation of key figure labels:

[0063] 1. Drive pump;

[0064] 11. Pump casing;

[0065] 111. First housing; 1111. Fixing compartment; 1112. Limiting protrusion; 1113. Side cover; 1114. Ear hole; 1115. Watch strap;

[0066] 112. Second shell; 1121. Snap ring; 1122. Positioning recess;

[0067] 113. Third housing component; 1131. Receiving cavity;

[0068] 114. Positioning groove; 1141. Step;

[0069] 115. Opening;

[0070] 118. Dial; 1181. Second scale mark; 1182. Rotation arrow;

[0071] 12. Control components;

[0072] 121. Knob; 132. Indicator arrow;

[0073] 122. Ratchet; 1221. Arc-shaped locking strip; 1222. Barbed part; 1223. Reinforcing rib;

[0074] 123. Snap pin; 1231. Buckle;

[0075] 13. Cap;

[0076] 14. Internal cavity;

[0077] 15. Rotary pump head;

[0078] 151. First turntable; 152. Second turntable; 1521. Card slot; 1522. Card section;

[0079] 153. Roller;

[0080] 16. Semi-circular shell; 17. Pick;

[0081] 2. Liquid supply components;

[0082] 21. Liquid storage tube; 211. Third piston; 212. Antibacterial and breathable membrane; 213. Silicone valve;

[0083] 22. Liquid storage bag;

[0084] 3. Hose; 31. Extrusion section; 32. Fifth connector;

[0085] 4. Intravenous catheter;

[0086] 5. Hydraulic testing mechanism;

[0087] 51. Outer shell; 511. Nozzle; 512. First scale value; 513. Second protrusion; 514. Window;

[0088] 52. First connector; 521. Protruding ring; 522. Annular protruding ridge;

[0089] 53. First piston; 531. First protrusion;

[0090] 54. First elastic element;

[0091] 55. Elastic diaphragm;

[0092] 56. Second piston; 561. Second elastic element;

[0093] 57. Moving lever; 571. Indicator protrusion;

[0094] 6. Liquid dispensing mechanism;

[0095] 61. Second connector;

[0096] 62. Third connector; 621. Anti-reverse valve;

[0097] 63. Fourth connector;

[0098] 64. Three-way valve; 641. Switch;

[0099] 65. Branch pipe; 651. Main pipe; 6511. Second pipe clamp;

[0100] 652, branch pipe; 6521, first pipe clamp;

[0101] D. Preset direction. Detailed Implementation

[0102] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0103] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated device, element, or component to include a specific orientation, or to be constructed and operated in a specific orientation.

[0104] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0105] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0106] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0107] The technical solution of the present invention will be further described below with reference to the embodiments and accompanying drawings.

[0108] Please see Figure 1 As shown, this application embodiment provides a tube flushing and sealing device, including a liquid supply component 2, a drive pump 1, and a hose 3. The liquid supply component 2 is configured to store liquid for tube flushing and sealing. The drive pump 1 includes a pump housing 11 and a rotary pump head 15, which is rotatably disposed in the inner cavity 14 of the pump housing 11. The liquid supply component 2 is mounted on the pump housing 11. This improves the integration of the tube flushing and sealing device, making the tube flushing and sealing device easier to store or carry. Users can complete the tube flushing and sealing by simply installing the liquid supply component 2 and starting the pump, eliminating the steps of suction and disinfection, and lowering the threshold for tube flushing and sealing operations.

[0109] One end of the tubing 3 is connected to the fluid supply component 2, and the other end of the tubing 3 is used to connect to the venous catheter 4, which is connected to a human blood vessel. This eliminates the need for repeated disconnection from the venous catheter 4 for fluid aspiration, significantly reducing the number of times the interface is exposed and significantly lowering the risk of contamination of the venous catheter 4.

[0110] The middle part of the tubing 3 passes through the inner cavity 14. The rotating pump head 15 is used to squeeze the tubing 3 when rotating, causing the liquid in the fluid supply component 2 to flow to the intravenous catheter 4 for flushing and sealing. The drive pump 1 continuously squeezes the tubing 3 by rotating the pump head 15, automatically pushing the liquid to the intravenous catheter 4, eliminating the need for air venting and injection. This makes the flushing and sealing operation simpler and faster, reducing manual operation time.

[0111] Please see Figures 2 to 4 As shown, in some embodiments, the pump housing 11 also has an opening 115 communicating with the inner cavity 14 and the outside. The sealing device also includes a cap 13, which is movably connected to the pump housing 11 and located at the opening 115. The hose 3 passes through the inner cavity 14 along the outer periphery of the rotary pump head 15, and at least a portion of the hose 3 is located between the rotary pump head 15 and the cap 13. The portion of the hose 3 located between the rotary pump head 15 and the cap 13 is a compression section 31. When the cap 13 moves away from the opening 115, the compression section 31 of the hose 3 is exposed from the opening 115; when the cap 13 covers the opening 115, the rotary pump head 15 and the cap 13 jointly compress the compression section 31 of the hose 3.

[0112] The tubing 3 continuously delivers liquid from the supply component 2 to the intravenous catheter 4 through the compression deformation of the compression section 31. During sterilization, transportation, and storage after packaging, the compression section 31 is prone to creep and permanent deformation under the continuous compression of the rotating pump head 15. This can lead to problems such as reduced or unstable flow rate of the drive pump 1, or liquid leakage.

[0113] When the sealing equipment is in an unopened package or when the drive pump 1 is not in operation, the cap 13 can be opened to expose the compression section 31 through the opening 115 from the inner cavity 14 to the external space of the pump housing 11. This releases localized stress on the compression section 31 or the hose 3, preventing creep or permanent deformation of the hose 3. When the drive pump 1 needs to operate, the cap 13 is closed, allowing the drive pump 1 and the cap 13 to jointly compress the compression section 31 for liquid delivery. This effectively increases the service life of the hose 3 and prevents premature deformation and failure.

[0114] The compression section 31 of hose 3 is the area with the greatest overall deformation and is also the part that ages fastest due to fatigue. By opening the cap 13, the compression section 31 can be visually inspected for signs of fatigue such as expansion, cracks, and excessively deep indentations. A new hose 3 can be replaced before it becomes severely aged, ensuring flow stability during the flushing process.

[0115] Please see Figures 5 to 8 As shown, in some embodiments, the drive pump 1 further includes a control member 12, a portion of which is disposed outside the pump housing 11, and another portion passes through the pump housing 11 and is connected to the rotary pump head 15 to maintain circumferential fixation with the rotary pump head 15.

[0116] The exposed portion of the control element 12 can be a knob 121 or an extension of the motor drive shaft. When the control element is a knob 121, the user can perform tube flushing operations in environments with power outages, limited power, or electromagnetic interference. In electric mode, the rotational speed of the drive shaft can be preset, and the liquid can be delivered at a fixed time, quantity, and constant pressure to achieve the technical effect of constant pressure tube flushing. This also reduces manual intervention and hand fatigue, improves accuracy and repeatability, and is suitable for long-term or frequent tube flushing.

[0117] Please see Figures 5 to 6 As shown, in some embodiments, the control element 12 includes a knob 121 and a ratchet 122. The knob 121 includes a locking pin 123, which passes through the pump housing 11 and engages with the rotation center of the ratchet 122. The pump housing 11 is provided with a positioning groove 114, and the ratchet 122 is disposed in the positioning groove 114, so that the ratchet 122 can only rotate unidirectionally relative to the pump housing 11 along a preset direction D.

[0118] During catheter sealing or flushing, if the control element 12 is released or incorrectly reversed, causing the rotating pump head 15 to reverse, blood will flow back into the venous catheter 4, forming a thrombus and blocking the venous catheter 4. The ratchet 122 acts as an anti-reverse mechanism, allowing the control element 12 to rotate only in the preset direction D. If the control element 12 rotates in the opposite direction, it will be blocked by the resistance of the ratchet 122, thus preventing the rotating pump head 15 from rotating back and ensuring that no harm is caused to the patient due to reverse operation during catheter sealing.

[0119] The ratchet 122 structure typically provides a distinct "click" feel in the direction of rotation, allowing the operator to clearly perceive each effective squeezing action. This tactile feedback helps in counting strokes, such as delivering a certain volume of fluid per revolution, facilitating a rough estimate of the fluid dose entering the intravenous catheter 4 during flushing and sealing.

[0120] Please see Figures 5 to 6 As shown, in some embodiments, the ratchet 122 has at least two arc-shaped retaining strips 1221 on its outer periphery, and one end of the arc-shaped retaining strip 1221 near the inner wall of the positioning groove 114 has a barb portion 1222. The inner wall of the positioning groove 114 has a plurality of evenly spaced steps 1141, and the barb portion 1222 abuts against the steps 1141, so that the ratchet 122 rotates unidirectionally relative to the pump housing 11 along a preset direction D.

[0121] The inclined surface of the barb fits snugly against the vertical surface of step 1141, creating significant resistance when the operator applies an opposing force. This ensures the operator can only operate the drive pump 1 in the preset direction D.

[0122] During the rotation of the ratchet 122, wear occurs on the contact surface between the barb 1222 and the step 1141, which can easily cause a clearance and lead to a small range of reverse rotation of the ratchet 122. The elastic deformation of the arc-shaped locking strip 1221 itself enhances the contact strength between the barb 1222 and the step 1141, allowing the ratchet 122 to still rotate stably in the preset direction D under certain wear conditions.

[0123] In some embodiments, the curved strip 1221 is provided with a reinforcing rib 1223 at the part with the greatest curvature.

[0124] During the rotation of the ratchet 122, the stress is concentrated at the part with the greatest curvature on the arc-shaped retaining strip 1221, making it prone to fracture failure. The reinforcing rib 1223 greatly enhances the structural rigidity of the arc-shaped retaining strip 1221, reducing the risk of fracture. This enables the arc-shaped retaining strip 1221 to resist long-term, cyclical deformation. This ensures that even after long-term use, the engagement between the barb 1222 and the step 1141 remains tight and precise, maintaining the reliability of the ratchet 122's anti-reverse function.

[0125] Please see Figure 7 As shown, in some embodiments, the rotary pump head 15 includes a first turntable 151 and a second turntable 152. At least two rollers 153 are rotatably connected between the first turntable 151 and the second turntable 152. The rollers 153 are configured to roll and contact the hose 3, squeezing the hose 3 to allow the fluid within the hose 3 to flow into the intravenous catheter 4. A slot 1521 is provided at the rotation center of the second turntable 152, and a locking part 1522 is provided within the slot 1521. A buckle 1231 is provided at the end of a locking post 123, which penetrates the first turntable 151. The buckle 1231 engages with the locking part 1522, thus circumferentially fixing the rotary pump head 15 to the knob 121.

[0126] The rotation of knob 121 is restricted to unidirectional movement by ratchet 122. The rotation of knob 121 is forcibly and synchronously transmitted to rotary pump head 15 through the rigid connection of latch 123 and buckle 1231. Therefore, the rotation of rotary pump head 15 is also forcibly and synchronously restricted to the same preset direction D.

[0127] Please see Figures 9 to 14 As shown, in some embodiments, the flushing and sealing device further includes a hydraulic detection mechanism 5; the hydraulic detection mechanism 5 includes an interconnected housing 51 and a first connector 52, one end of the first connector 52 is connected to the hose 3, and the other end is used to connect to the intravenous catheter 4, the port 511 of the housing 51 is connected to the first connector 52, and the outer wall of the housing 51 is provided with a plurality of first scale values ​​512 along the length direction of the housing 51, the first scale values ​​512 are used to indicate the hydraulic pressure value in the hose 3, and / or the first scale values ​​512 are used to indicate the liquid volume value in the housing 51.

[0128] The user can visually observe the changes in liquid pressure output by the drive pump 1 and the volume of liquid inside the casing 51 using the first scale value 512 on the outer casing 51. During the sealing operation, quickly assessing the hydraulic pressure difference between the intravenous catheter 4 and the blood vessel is crucial. The user observes the changes in hydraulic pressure within the intravenous catheter 4 using the first scale value 512 to determine the effectiveness of flushing and sealing. If the hydraulic pressure value displayed by the hydraulic detection mechanism 5 is too low, it indicates that sealing needs to continue to maintain a positive pressure state within the intravenous catheter 4 relative to the blood vessel; if the hydraulic pressure value displayed by the hydraulic detection mechanism 5 remains high for a prolonged period, it indicates a good sealing effect, and there is no need to worry about blood flowing back into the intravenous catheter 4.

[0129] If problems such as blockage of the intravenous catheter 4 or partial bend in the infusion tubing occur, continuing to start the drive pump 1 will cause a sharp increase in pressure within the tubing. The operator can observe the casing 51 and, if an abnormal pressure spike is detected that far exceeds the range required for normal flushing or sealing, immediately stop the operation, eliminate the cause of the blockage, and quickly resume normal flushing and sealing procedures.

[0130] In some embodiments, the hydraulic detection mechanism 5 is a commonly used pressure gauge, through which the pressure value of the liquid output from the hose 3 can be directly read.

[0131] Please see Figure 9 As shown, in some embodiments, the first connector 52 is provided with an annular protrusion 522 at one end of the hose 3. When the first connector 52 is press-fitted with the inner wall of the hose 3 through the annular protrusion 522, the hydraulic detection mechanism 5 can be quickly snapped into place and connected to the hose 3.

[0132] The annular ridge 522 is inclined towards the outside of the hose 3. When the annular ridge 522 is inserted into the hose 3, its inclined surface guides and reduces resistance, ensuring that the annular ridge 522 smoothly enters the hose. At this time, when the inclined annular ridge 522 contacts the inner wall of the hose 3, it generates radial compression, forming a tight interference fit. This effectively fills the tiny gap between the inner wall of the hose 3 and the first connector 52, avoiding the risk of liquid leakage and improving the sealing reliability of the hydraulic detection mechanism 5.

[0133] The interference fit between the annular protrusion 522 and the inner wall of the hose 3 is in an elastic compression state. When pulling it out, it is necessary to overcome the frictional force between the annular protrusion 522 and the inner wall of the hose 3, as well as the recovery force of the compression deformation. Therefore, a large external force is required to separate them. This significantly reduces the probability of the first connector 52 falling off due to accidental pulling, ensuring the long-term stability of the connection between the hydraulic detection mechanism 5 and the hose 3, and avoiding detection interruptions or liquid leakage accidents caused by falling off.

[0134] Please see Figures 10 to 12 As shown, in some embodiments, a first structure of the housing 51 is illustrated. In the first embodiment of the housing 51, the housing 51 is transparent, and a first piston 53 is provided inside the housing 51 on the side near the opening 511. A first elastic member 54 is provided between the first piston 53 and the bottom wall of the housing 51, and the first elastic member 54 is used to abut against the bottom wall of the housing 51 and the first piston 53 respectively.

[0135] The initial position is when the first piston 53 is near the opening 511, at which point the first elastic element 54 is in its natural state. When the tubing 3 delivers fluid to the intravenous catheter 4, the fluid enters the housing 51, and hydraulic pressure acts on the side of the first piston 53 near the opening 511, pushing the first piston 53 away from the opening 511. The movement of the first piston 53 compresses the first elastic element 54 until the reaction force generated by the first elastic element 54 is balanced with the fluid pressure transmitted from the tubing 3. The first scale value 512 corresponding to the position of the first piston 53 directly reflects the pressure of the fluid output from the tubing 3.

[0136] In some embodiments, the first piston 53 has a first protrusion 531 on the side away from the nozzle 511, and the bottom wall of the transparent bottle has a second protrusion 513 coaxial with the first protrusion 531. The first elastic member 54 is a spring, and the two ends of the spring are respectively sleeved on the first protrusion 531 and the second protrusion 513, so that the first elastic member 54 can stably maintain a coaxial state with the first piston 53.

[0137] Under vibration or assembly error, the first elastic element 54 may deflect or rub against the wall inside the housing 51, causing the central axis of the first elastic element 54 to not coincide with the central axis of the first piston 53. This results in the first piston 53 being subjected to excessive pressure locally, increasing the resistance to movement and making it less smooth, thus affecting the sensitivity of the hydraulic detection mechanism 5.

[0138] The first protrusion 531 and the second protrusion 513 provide a perfect, concentric guide track for the first elastic element 54. Regardless of minute errors during assembly, the first elastic element 54 will always tend to remain centered within the central hole formed by the two protrusions. This ensures that the thrust of the first elastic element 54 on the first piston 53 always passes through the axis of the first piston 53, preventing harmful lateral forces and fundamentally eliminating the risk of the first piston 53 "rubbing against the wall" and jamming, thus guaranteeing the smooth and reliable movement of the first piston 53 over a long period.

[0139] Please see Figure 12 As shown, a second embodiment of the housing is illustrated. An elastic diaphragm 55 is provided inside the transparent housing 51 on the side near the opening 511. When the liquid in the hose 3 enters the fluoroscopic tube, the liquid causes the elastic diaphragm 55 to gradually expand.

[0140] Initially, the elastic diaphragm 55 is in a naturally contracted state, closely adhering to or near the inner wall of the opening 511 of the outer casing 51. When the tubing 3 delivers fluid to the intravenous catheter 4, the fluid enters the elastic diaphragm 55 inside the outer casing 51, and the hydraulic pressure causes the elastic diaphragm 55 to expand. The degree of expansion of the diaphragm corresponds to the first scale value 512, which can intuitively reflect the hydraulic pressure value inside the tubing 3 and the fluid volume value inside the outer casing 51.

[0141] When using the tube sealing equipment to operate the tube sealing, a certain amount of elastic potential energy can be stored through the first elastic element 54 or elastic diaphragm 55 in the hydraulic detection mechanism 5 to continuously apply pressure to the liquid in the tubing 3, so that the liquid in the venous catheter 4 can be in a positive pressure state relative to the venous blood for a longer period of time, thereby prolonging the sealing effect.

[0142] Please see Figures 13 to 14As shown, in some embodiments, a second structural diagram of the housing 51 is illustrated. In a third embodiment of the housing 51, the housing 51 is provided with a window 514, and the outer wall of the housing 51 is provided with a first scale value 512 along the length direction of the window 514; a second piston 56 is provided inside the housing 51 near the pipe opening 511, and a second elastic member 561 is provided between the second piston 56 and the bottom wall of the housing 51; a moving rod 57 is provided on the side of the second piston 56 away from the pipe opening 511, and the side of the moving rod 57 away from the second piston 56 is slidably connected to the window 514, and an indicator protrusion 571 is provided at the end of the moving rod 57 near the window 514, the indicator protrusion 571 being used to indicate the corresponding first scale value 512.

[0143] A window 514 is provided on the outer wall of the outer casing 51. One end of the moving rod 57 is slidably connected to the window 514, and an indicator protrusion 571 is provided at the end. The movement of the second piston 56 is directly transmitted to the window 514 through the moving rod 57. The indicator protrusion 571 accurately points to the first scale value 512. When reading, the line of sight is vertically aligned with the window 514 and the scale value, which greatly improves visibility and intuitiveness.

[0144] The movable rod 57 is slidably connected to the window 514. The inner wall of the window 514 forms a physical limit on the movable rod 57 to prevent the movable rod 57 from shifting under vibration or impact, ensuring that the indicating protrusion 571 always moves in the straight line direction of the first scale value 512, avoiding reading deviation caused by the shaking of the rod, and improving measurement consistency.

[0145] In some embodiments, the first connector 52 is provided with a protruding ring portion 521, and the inner sidewall of the pump housing 11 is provided with a retaining ring 1121 and a positioning recess 1122 respectively corresponding to the hose 3 and the protruding ring portion 521. The retaining ring 1121 is configured to allow the hose 3 to enter the pump housing 11 in a direction tangential to the outer periphery of the rotating pump head 15, and the positioning recess 1122 is used to fix the relative position of the hydraulic detection mechanism 5 and the pump housing 11.

[0146] The hose 3 must enter the inner cavity 14 in a direction tangential to the outer periphery of the rotary pump head 15 in order to be smoothly and effectively squeezed by the rotary pump head 15. If the hose 3 swings arbitrarily in the inner cavity 14, it will cause the hose 3 to bend, become blocked, or be squeezed unevenly at the pump head inlet. This will result in unstable flow or, in severe cases, damage to the hose 3 or the rotary pump head 15.

[0147] A retaining ring 1121 is located at the point where the hose 3 enters the inner cavity 14. The retaining ring 1121 limits the angle at which the hose 3 enters the inner cavity 14, so that the rotating pump head 15 can effectively squeeze the hose 3 and prevent the hose 3 from folding in the inner cavity 14. This maintains a stable relative position between the hose 3 and the pump housing 11 and prevents the hose 3 from coming out of the pump housing 11.

[0148] The hydraulic detection mechanism 5 is assembled onto the pump housing 11 by the cooperation of the recessed part and the convex ring part 521, which helps to improve the overall integration of the sealing pipe equipment. This also ensures the stability of the connection between the hydraulic detection mechanism 5 and the hose 3.

[0149] Please see Figure 15 As shown, in some embodiments, the flushing tube device also includes a strap 1115, the two ends of which are respectively connected to opposite sides of the pump housing 11.

[0150] The pump housing 11 has ear holes 1114 on opposite sides, and the two ends of the strap 1115 are respectively attached to the ear holes 1114 on both sides of the pump housing 11. Patients can wear the entire flushing device on their wrists through the strap 1115, improving the ease of use. With the strap 1115 in place, the patient's fluid supply component 2 and drive pump 1 are fixed to the body, eliminating concerns about the device or intravenous catheter 4 falling off. The strap 1115 secures the device to the body, conforming to ergonomics and ensuring patient comfort during the flushing process.

[0151] Please see Figures 16 to 19 As shown, in some embodiments, the flushing and sealing device further includes a liquid dispensing mechanism 6, which includes a second connector 61, a third connector 62, and a fourth connector 63; the second connector 61 is used to connect to an external liquid source, the third connector 62 is used to connect to a hose 3, and the fourth connector 63 is used to connect to a venous catheter 4; the liquid dispensing mechanism 6 is configured to control the opening and closing of the liquid delivery path between the second connector 61 and the fourth connector 63 or between the third connector 62 and the fourth connector 63.

[0152] Traditional intravenous infusion procedures require disconnecting the flushing and sealing equipment, replacing the infusion stand and bag, and then re-sterilizing and reconnecting. This process is cumbersome and carries a risk of infection. When an external fluid source is needed,

[0153] An external fluid source is directly connected to the second connector 61, and then the dispensing mechanism 6 connects the second connector 61 and the fourth connector 63, allowing the external fluid to flow directly from the external fluid source to the intravenous catheter 4. If intermittent infusion is required and a flushing / sealing operation is needed, the dispensing mechanism 6 is operated to close the second connector 61 and the fourth connector 63, while the third connector 62 connects to the fourth connector 63. This allows for seamless switching between routine intravenous infusion therapy and flushing / sealing operations without any additional physical tubing insertion or replacement, reducing the risk of tubing contamination. Integrating two different operational purposes onto the same device significantly improves equipment utilization and work efficiency.

[0154] Please see Figures 18 to 19As shown, in some embodiments, the third connector 62 is provided with an anti-reverse valve 621, which is configured to allow the liquid in the hose 3 to flow unidirectionally into the venous catheter 4 when the hydraulic pressure in the third connector 62 reaches a preset value.

[0155] Ideally, during catheter sealing, a positive pressure higher than the venous blood pressure should be established in the venous catheter 4 to prevent blood backflow. During the initial operation phase, the drive pump 1 may have difficulty establishing a positive pressure relative to the venous blood pressure within the venous catheter 4, and slight blood backflow may still occur.

[0156] The preset pressure value of the anti-backflow valve 621 can be set to an ideal and safe positive pressure value for sealing the catheter. When the pumped fluid reaches this pressure, the valve automatically opens and remains open, ensuring that the fluid enters the intravenous catheter 4 at this set pressure. This prevents blood backflow from occurring when the hydraulic pressure is insufficient, connecting the tubing 3 and the intravenous catheter 4. During the sealing operation, the operator does not need to worry about whether the hydraulic pressure in the tubing 3 has reached the preset value; they only need to start the sealing program, and the sealing equipment will automatically release the sealing fluid at the appropriate time, ensuring the consistency and reliability of the sealing quality.

[0157] Please see Figure 16 As shown, in some embodiments, the liquid dispensing mechanism 6 includes a three-way valve 64, which is connected to a second connector 61, a third connector 62, and a fourth connector 63. The three-way valve 64 is equipped with a switch 641, which, when rotated, connects the second connector 61 to the fourth connector 63 or the third connector 62 to the fourth connector 63.

[0158] When external liquid needs to be input, rotary switch 641 connects the flow channels of the second connector 61 and the fourth connector 63, while disconnecting the third connector 62; when independent flushing and sealing operation is required, rotary switch 641 connects the flow channels of the third connector 62 and the fourth connector 63, while disconnecting the second connector 61.

[0159] During the control of fluid flow, the three-way valve 64 ensures the independence of different fluid paths. When the fluid path between the third connector 62 and the fourth connector 63 is connected, the fluid path between the external fluid source and the intravenous catheter 4 is blocked, and vice versa. This independence prevents the mixing of two different fluid sources, thus preventing problems such as changes in efficacy and adverse reactions caused by fluid mixing, and ensuring the safety and effectiveness of fluid delivery.

[0160] Please see Figure 17As shown, in some embodiments, the liquid dispensing mechanism 6 includes a branch pipe 65, which includes a main pipe 651 and a branch pipe 652. The two ends of the main pipe 651 are respectively connected to the second connector 61 and the fourth connector 63. One end of the branch pipe 652 is connected to the third connector 62, and the other end is connected to the main pipe 651. A first pipe clamp 6521 is provided on the branch pipe 652, and a second pipe clamp 6511 is provided on the side of the main pipe 651 near the second connector 61.

[0161] The main tube 651 forms the infusion channel for fluid from an external fluid source to the intravenous catheter 4; the branch tube 652 forms the infusion channel from the supply component 2 to the intravenous catheter 4. When the first clamp 6521 is open and the second clamp 6511 is closed, fluid for flushing the catheter flows from the supply component 2 into the intravenous catheter 4; when the first clamp 6521 is closed and the second clamp 6511 is open, external fluid enters the intravenous catheter 4 through the main tube 651. The drive pump 1, external fluid source, and intravenous catheter 4 can be integrated at low cost through the branch tube 65, the first clamp 6521, and the second clamp 6511, meeting the requirements for components needed to perform flushing and sealing operations or basic intravenous infusion.

[0162] Please see Figures 20 to 22 As shown, in some embodiments, the liquid supply component 2 is provided with a silicone valve 213 on the side near the hose 3, and the hose 3 is provided with a fifth connector 32 corresponding to the silicone valve 213. The fifth connector 32 is screwed to the liquid supply component 2, so that part of the fifth connector 32 passes through the silicone valve 213 to connect the liquid supply component 2 and the hose 3.

[0163] When the liquid supply component 2 is not connected to the hose 3, the silicone valve 213 can seal the liquid supply component 2 from the outside, preventing external impurities from contaminating the liquid inside the liquid supply component 2. When it is necessary to connect the liquid supply component 2 and the hose 3, part of the fifth connector 32 passes directly through the silicone valve 213, connecting the liquid supply component 2 and the hose 3, thus achieving needle-free connection between the liquid supply component 2 and the hose 3.

[0164] When connected, the needleless liquid supply component 2 and the hose 3 can block the intrusion of external microorganisms. When disconnected, they automatically seal to prevent internal liquid from overflowing or external contaminants from entering the liquid supply component 2.

[0165] Please see Figure 20 As shown, in some embodiments, the liquid supply component 2 is a liquid storage pipe 21, and the pump housing 11 of the first structure of the drive pump 1 is provided with a fixed chamber 1111. The fixed chamber 1111 is used to place the liquid storage pipe 21, and the side of the fixed chamber 1111 is provided with an openable side cover 1113.

[0166] The fixed compartment 1111 provides a precise installation position for the liquid storage tube 21. The operator only needs to place the liquid storage tube 21 into the fixed compartment 1111 to accurately connect the liquid storage tube 21 and the hose 3, which greatly simplifies the installation process and shortens the time for replacing the liquid storage tube 21.

[0167] Shaking during transportation or use may cause the unsecured liquid storage tube 21 to shift or even detach from the hose 3, resulting in leakage and equipment downtime. The liquid storage tube 21 is placed in the fixing chamber 1111, which firmly locks the liquid storage tube 21 in a predetermined position, ensuring the stability of the connection between the liquid storage tube 21 and the hose 3, so as to ensure that the liquid supply component 2 can continuously and stably deliver the liquid for flushing the tube.

[0168] In some embodiments, the fixed chamber 1111 is provided with a limiting protrusion 1112 on the end face of the liquid storage tube 21 away from the hose 3. The limiting protrusion 1112 can limit the axial position of the liquid storage tube 21 relative to the fixed chamber 1111.

[0169] For the reservoir tube 21 to be successfully connected to the hose 3, it needs to be precisely positioned axially relative to the end of the fixed chamber 1111. If the position of the reservoir tube 21 within the fixed chamber 1111 is inconsistent each time—sometimes inserted too deeply, sometimes too shallow—the connection between the reservoir tube 21 and the hose 3 will be either too loose or too tight. If it is too loose, gaps will appear at the interface, leading to leakage; if it is too tight, it will be difficult to smoothly assemble the reservoir tube 21 into the position of the fixed chamber 1111. The limiting protrusion 1112 provides a constant reference point for the reservoir tube 21. Each time the reservoir tube 21 is replaced, it can be automatically and repeatedly pushed to the same depth and position relative to the fixed chamber 1111. This achieves perfect alignment in a "blind insertion" state, ensuring a secure and airtight connection, and eliminating leakage or installation failures caused by improper installation.

[0170] Please see Figure 21 As shown, in some embodiments, a third piston 211 is provided inside the liquid storage tube 21. When the liquid in the liquid storage tube 21 flows to the hose 3, the third piston 211 moves toward the hose 3 under the action of atmospheric pressure.

[0171] When the fifth connector 32 is connected to the hose 3, and the drive unit continuously delivers the liquid in the hose 3 to the intravenous catheter 4, the pressure in the reservoir 21 is lower than the external atmospheric pressure. Under the action of the pressure difference, the third piston 211 continuously approaches the fifth connector 32. When the liquid in the reservoir 21 is emptied, the third piston 211 will move to the foremost position, closely adhering to the fifth connector 32.

[0172] In some embodiments, the end face of the reservoir tube 21 away from the hose 3 is provided with a sterile and breathable membrane 212; the sterile and breathable membrane 212 is configured to be breathable and block pathogens.

[0173] When the drive pump 1 squeezes the hose 3 to draw liquid from the storage tube 21, the liquid level in the storage tube 21 drops, and the internal air pressure decreases. Outside air enters the storage tube 21 through the sterile and breathable membrane 212 to replenish the air pressure, preventing poor liquid delivery or pump idling caused by negative pressure. Pressure balance ensures that the outflow rate of liquid in the storage tube 21 matches the pumping rate, maintaining a stable flow output and preventing sudden changes in flow rate due to pressure fluctuations.

[0174] The liquid in the reservoir 21 must be strictly sterile; otherwise, it may cause infection of the intravenous catheter 4 or systemic inflammation. The antibacterial properties of the sterile and breathable membrane 212 can effectively intercept airborne bacteria and pathogens carried by dust, preventing bacteria and debris from entering the reservoir 21 with the air and contaminating the liquid.

[0175] Please see Figures 23 to 26 As shown, in some embodiments, in the drive pump 1 of the second structure, the liquid supply component 2 is a liquid storage bag 22, which is connected to the hose 3. The pump housing 11 is provided with a receiving cavity 1131 for placing the liquid storage bag 22.

[0176] The reservoir bag 22 is used to contain and supply liquid, and the receiving cavity 1131 is used to fix the reservoir bag 22, ensuring that the reservoir bag 22 can be reliably connected to the tubing 3. As the liquid in the reservoir bag 22 continuously enters the intravenous catheter 4 through the tubing 3, atmospheric pressure gradually flattens the reservoir bag 22.

[0177] The liquid storage bag 22, as a disposable consumable, is low in cost, has a good sealing effect, and can be used to ensure that the liquid in the flushing tube is in a relatively sterile environment. Integrating the placement of the liquid storage bag 22 into the pump housing 11 enhances the overall integrity of the device and makes its appearance cleaner. Simultaneously, the receiving cavity 1131 protects the liquid storage bag 22, preventing accidental puncture and leakage.

[0178] Please see Figures 23 to 24 As shown, in some embodiments, the pump housing 11 includes a first housing 111, a second housing 112, and a third housing 113. The first housing 111 and the second housing 112 cooperate to form an inner cavity 14, and the control member 12 is disposed on the first housing 111. The second housing 112 and the third housing 113 cooperate to form a receiving cavity 1131. The liquid storage bag 22 is provided with a sixth connector 221, which connects the liquid storage bag 22 to the hose 3.

[0179] The pump housing 11 is modularly structured by the first housing 111, the second housing 112, and the third housing 113, thereby reducing the manufacturing cost of the pump housing 11. When a part of the pump housing 11 is damaged due to an impact, only the corresponding module housing needs to be replaced, instead of replacing the entire pump housing 11, which greatly reduces the maintenance cost of the drive pump 1.

[0180] Please see Figure 27 As shown, in some embodiments, the pump housing 11 has a dial 118 corresponding to the position of the knob 121. The dial 118 encloses the ratchet 122 in the positioning groove 114. Furthermore, the dial 118 also has a second scale value 1181 and a rotation arrow 1182. Multiple second scale values ​​1181 are distributed around the dial 118. The knob 121 has an indicator arrow 132 that indicates the second scale value 1181. The rotation angle of the knob 121 is displayed by the interaction between the indicator arrow 132 and the second scale value 1181. The rotation arrow 1182 indicates the normal operating direction of the knob 121.

[0181] The dial 118 completely encloses the precision ratchet 122 and positioning groove 114 in a clean, independent chamber. This effectively prevents contaminants such as dust, hair, and liquid splashes from entering, avoiding functional failure caused by foreign objects jamming the ratchet 122. At the same time, it also prevents the user from directly moving the ratchet 122 with their fingers, preventing abnormal wear and damage and ensuring the long-term reliability of the anti-reverse mechanism.

[0182] Please see Figures 28 to 29 As shown, in some embodiments, the third structure driving the pump 1 includes a semi-circular shell 16 and a lever 17. One end of the tubing 3 is connected to a solution bag via a first connector 52, and the other end passes through the semi-circular shell to connect to the intravenous catheter 4. A rotary pump head 15 is located inside the semi-circular shell 16. A portion of the lever 17 is inserted into the interior of the semi-circular shell 16 and circumferentially fixed to the rotary pump head 15. The other portion of the lever 17 is located outside the semi-circular shell 16 for manual rotation. The rotary pump head 15 and the inner wall of the semi-circular shell 16 together compress the compression section 31 of the tubing 3, causing the fluid in the tubing 3 to flow into the intravenous catheter 4.

[0183] The semi-circular shell 16 has a C-shaped semi-enclosed structure, which can match the rotation trajectory of the rotary pump head 15 and provide a clamping space for the tubing 3. The operator holds the exposed part of the lever 17 and rotates it, causing the rotary pump head 15 to rotate inside the semi-circular shell 16. The rotating pump head and the inner wall of the semi-circular shell 16 squeeze the tubing 3 compression section 31 that passes through it, thereby pushing the liquid from the solution bag to the intravenous catheter 4.

[0184] By simplifying the structure of the drive pump 1, the cost of manufacturing the sealing equipment is reduced. Due to the open structure of the semi-circular shell 16, the third-structure drive pump 1 has no narrow gaps or hidden corners, facilitating equipment disinfection and cleaning.

[0185] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention.

Claims

1. A pipe-sealing device, characterized in that, include: The liquid supply unit is configured to store liquid for flushing the sealing tube; A drive pump includes a pump housing and a rotary pump head, wherein the liquid supply component is mounted on the pump housing, and the rotary pump head is rotatably disposed within the inner cavity of the pump housing; and A flexible tube, one end of which is connected to the fluid supply component, and the other end of which is used to connect to a venous catheter connected to a human blood vessel; the middle part of the flexible tube is inserted into the inner cavity, and the rotary pump head is used to squeeze the flexible tube when rotating, so that the liquid in the fluid supply component flows to the venous catheter to flush and seal the tube; The pump casing also has an opening connecting the inner cavity to the outside. The sealing tube device also includes a cover, which is movably connected to the pump casing and located at the opening. The hose passes through the inner cavity along the outer periphery of the rotary pump head, and at least a portion of the hose is located between the rotary pump head and the cover. The portion of the hose located between the rotary pump head and the cover is a compression section. When the cap moves away from the opening, the squeezed section of the hose is exposed from the opening; When the cap covers the opening, the rotary pump head and the cap together squeeze the squeezed section of the hose; The drive pump also includes a control component, a portion of which is located outside the pump housing, and another portion passes through the pump housing and is connected to the rotary pump head to maintain circumferential fixation with the rotary pump head.

2. The tube sealing equipment according to claim 1, characterized in that, The control component includes a knob and a ratchet. The knob is connected to the ratchet. The pump housing is provided with a positioning groove, and the ratchet is located in the positioning groove so that the ratchet can only rotate unidirectionally relative to the pump housing in a preset direction.

3. The tube sealing equipment according to claim 2, characterized in that, The ratchet has at least two arc-shaped retaining strips on its outer periphery, and one end of the arc-shaped retaining strip near the inner wall of the positioning groove has a barb. The inner wall of the positioning groove has multiple evenly spaced steps, and the barb abuts against the steps, so that the ratchet rotates unidirectionally relative to the pump housing in a preset direction.

4. The tube sealing equipment according to claim 1, characterized in that, The described flushing and sealing equipment also includes a hydraulic detection mechanism; the hydraulic detection mechanism includes an interconnected outer shell and a first connector, one end of the first connector is connected to the hose, and the other end is used to connect to the intravenous catheter, the port of the outer shell is connected to the first connector, and the outer wall of the outer shell is provided with a plurality of first scale values ​​along the length direction of the outer shell, the first scale values ​​are used to indicate the hydraulic pressure value in the hose, and / or the first scale values ​​are used to indicate the liquid volume value in the outer shell.

5. The tube sealing equipment according to claim 4, characterized in that, The outer shell is transparent, and a first piston is provided inside the outer shell near the opening. A first elastic element is provided between the first piston and the bottom wall of the outer shell, and the first elastic element is used to abut against the bottom wall of the outer shell and the first piston respectively.

6. The tube sealing equipment according to claim 4, characterized in that, An elastic diaphragm is provided inside the outer casing on the side near the opening of the tube. When liquid in the hose enters the outer casing, the liquid causes the elastic diaphragm to gradually expand.

7. The tube sealing equipment according to claim 4, characterized in that, The outer casing has a window, and the outer wall of the outer casing has a first scale value along the length of the window; a second piston is provided inside the outer casing near the opening, and a second elastic element is provided between the second piston and the bottom wall of the outer casing; a moving rod is provided on the side of the second piston away from the opening, and the side of the moving rod away from the second piston rod is slidably connected to the window, and an indicator protrusion is provided at the end of the moving rod near the window, the indicator protrusion being used to indicate the corresponding first scale value.

8. The tube sealing equipment according to claim 1, characterized in that, The sealing tube device also includes a watch strap, the two ends of which are respectively connected to opposite sides of the pump casing.

9. The tube sealing equipment according to claim 1, characterized in that, The flushing and sealing device further includes a liquid dispensing mechanism, which includes a second connector, a third connector, and a fourth connector; the second connector is used to connect to an external liquid source, the third connector is used to connect to the tubing, and the fourth connector is used to connect to the intravenous catheter; the liquid dispensing mechanism is configured to control the opening and closing of the liquid delivery path between the second connector and the fourth connector or between the third connector and the fourth connector.

10. The tube sealing equipment according to claim 9, characterized in that, The third connector is equipped with an anti-reverse valve, which is configured to allow the liquid in the hose to flow unidirectionally into the venous catheter when the hydraulic pressure in the third connector reaches a preset value.

11. The tube sealing equipment according to claim 9, characterized in that, The liquid dispensing mechanism includes a three-way valve, which is connected to the second connector, the third connector, and the fourth connector. The three-way valve is equipped with a switch, which, when rotated, connects the second connector to the fourth connector or the third connector to the fourth connector.

12. The tube sealing equipment according to claim 9, characterized in that, The liquid dispensing mechanism includes a branch pipe, which includes a main pipe and a branch pipe. The two ends of the main pipe are respectively connected to the second connector and the fourth connector. One end of the branch pipe is connected to the third connector, and the other end is connected to the main pipe. A first pipe clamp is provided on the branch pipe, and a second pipe clamp is provided on the side of the main pipe near the second connector.

13. The tube sealing equipment according to claim 1, characterized in that, The liquid supply component is provided with a silicone valve on the side near the hose, and the hose is provided with a fifth connector corresponding to the silicone valve. The fifth connector is screwed onto the liquid supply component, so that part of the fifth connector passes through the silicone valve to connect the liquid supply component and the hose.

14. The tube sealing equipment according to any one of claims 1-13, characterized in that, The liquid supply component is a liquid storage pipe, and the pump casing is provided with a fixed compartment for placing the liquid storage pipe. The side of the fixed compartment is provided with an openable side cover.

15. The tube sealing equipment according to claim 14, characterized in that, The liquid storage tube is equipped with a third piston. When the liquid in the liquid storage tube flows to the hose, the third piston moves toward the hose under the action of atmospheric pressure.

16. The tube sealing equipment according to claim 15, characterized in that, The end face of the liquid storage tube away from the flexible tube is provided with a bacterial-proof and breathable membrane; the bacterial-proof and breathable membrane is configured to be breathable and block pathogens.

17. The tube sealing equipment according to any one of claims 1-13, characterized in that, The liquid supply component is a liquid storage bag, which is connected to the hose; the pump housing is provided with a receiving cavity for placing the liquid storage bag.

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