Tube flushing and sealing device for multi-cavity catheter
By designing a multi-cavity catheter flushing device, the synchronous operation of multiple syringes is achieved using the clamping boss and threaded rod structure, the synchronization and standardization of the multi-cavity catheter flushing and sealing operation in the prior art is solved, and the operation difficulty and risk of medical staff is reduced.
Patent Information
- Application Number
- CN202510571293.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-06
- Publication Date
- 2025-07-25
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The lack of suitable auxiliary equipment in the prior art has caused medical staff to fail to achieve synchronous action and accurate pulsed impulse technology when flushing and sealing the multi-cavity catheter, which increases the difficulty and risk of operation.
A multi-cavity catheter punching device is designed to realize the synchronous loading and operation of multiple syringes by clamping the boss and threaded rod structure, and combine the hand drive assembly and the ratchet ratchet mechanism to ensure the synchronous punching and sealing operation of each chamber.
It reduces the operating burden of medical staff, realizes the synchronous flushing and sealing of multi-cavity catheters, prevents blood recovery problems, and ensures the standard implementation of pulse flushing and sealing technology.
Smart Images
Figure CN120361387A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of medical devices, and in particular relates to a punching and sealing tube device for a multi-lumen catheter. Background Art
[0002] Central venous catheterization refers to the insertion of a catheter directly through the skin into the subclavian vein, external jugular vein, internal jugular vein, femoral vein, etc., and along the blood vessel to the vena cava. Central venous catheterization is a commonly used treatment method in intensive care units. Currently, commonly used venous catheterization techniques in clinical practice include PICC catheterization, CVC catheterization, etc. A multi-lumen catheter refers to a catheter with multiple lumens. Flushing and sealing a multi-lumen catheter refers to the operation of flushing and sealing a multi-lumen catheter. The purpose is to maintain the patency of the catheter and prevent complications such as blockage, infection and phlebitis. Flushing refers to the use of flushing fluid to flush the residual drugs in the catheter into the blood vessels to reduce incompatibility between drugs and prevent chemical phlebitis caused by drug stimulation of local blood vessels. The effect achieved is: sufficient flushing can remove residues such as drug solution and blood attached to the inner wall of the catheter, reduce rough spots on the inner wall of the catheter and microthrombosis, thereby reducing the risk of catheter blockage. Sealing refers to the use of sealing fluid to seal the indwelling catheter of the indwelling needle after the infusion is completed to maintain the patency of the venous access, prolong the retention time of the indwelling needle, and reduce the stimulation of the drug solution to the blood vessels and surrounding tissues. The effect achieved is: effective sealing can prevent blood from flowing back to the tip, thereby reducing the risk of blockage.
[0003] Flushing and sealing tubes requires high operating skills from medical staff. Specifically, pulsed flushing and sealing technology is usually used in the operation, that is, a "push and stop" method, to generate turbulence in the catheter, which promotes the removal of residual blood and liquid medicine on the inner wall of the catheter. For multi-lumen catheters, since flushing and sealing one of the catheters can easily cause blood return problems in other catheters, which in turn leads to lumen blockage, it is usually necessary to perform flushing and sealing operations on each lumen of the multi-lumen catheter at the same time. However, due to the lack of suitable auxiliary equipment, medical staff can only perform the aforementioned operations based on their own skills, that is, operate multiple syringes at the same time, which has the following problems: first, it is impossible to effectively operate each syringe to produce synchronous action; second, due to limited hand strength (using the thumb or palm to push the syringe piston), the aforementioned pulsed flushing technology cannot be accurately implemented.
[0004] In summary, it is necessary to develop and design auxiliary equipment for flushing and sealing multi-lumen catheters as needed to reduce the operating burden of medical staff and support the effective implementation of standardized flushing and sealing operations. Summary of the invention
[0005] The object of the present invention is to provide a tube sealing device for a multi-lumen catheter, which reduces the operation burden of medical personnel and supports the effective implementation of standardized tube sealing operations.
[0006] The technical solution adopted by the present invention is as follows: A flushing and sealing device for a multi-lumen catheter, comprising a base. At the front part of the top of the base, there are a plurality of clamping bosses. Between adjacent clamping bosses, a loading groove for accommodating a syringe is formed. At the rear part of the top of the base, a threaded rod is installed by a first shaft seat. It also includes a push plate with a threaded hole in the middle, the threaded rod is located in the threaded hole, and it further includes a hand-driven component for applying a driving force to the threaded rod; the hand-driven component includes a driving large gear with a driving small gear at the center, and it also includes a pressing arm that provides a reset elastic force by a torsion spring. Below the front part of the pressing arm, there is a driving arm with teeth on the inner side and the teeth are engaged with the driving small gear for transmission. It also includes a turntable whose middle part is combined with the end of the threaded rod. On the rear vertical surface of the turntable, there is a groove and ratchet teeth are provided on the groove wall. At the center of the groove, there is a ratchet wheel that cooperates with the ratchet teeth. At the center of the ratchet wheel, there is a transmission gear that meshes with the driving large gear.
[0007] Preferably, the driving small gear and the driving large gear have gear shafts and the gear shafts are installed on a group of second shaft seats; the rear part of the pressing arm has a pressing arm rotating shaft and the pressing arm rotating shaft is installed on a group of third shaft seats. On the side part of the rear part of the pressing arm, there is a clamping groove and the upper part of the torsion spring is embedded in the clamping groove. The lower part of the torsion spring is bent outward and inserted into the jack on the third shaft seat.
[0008] Preferably, at the inner center of the turntable, there is a shaft hole with a key groove, and the end of the threaded rod is inserted into the shaft hole and is connected by a key.
[0009] Preferably, a reset wheel is also installed at the end of the threaded rod. By turning the reset wheel to drive the threaded rod to rotate in the reverse direction, the push plate is retracted to the initial position.
[0010] Preferably, anti-slip convex lines are provided on the top of the pressing arm.
[0011] Preferably, guide rods are installed on both sides of the threaded rod by guide rod support seats. Guide holes are also provided at both ends of the push plate and the guide rods are located in the guide holes.
[0012] Preferably, it further includes a cover that is buckled and installed at the rear part of the top of the base. A connecting component is provided between the cover and the base. A first window and a second window are provided on the cover. The pressing arm of the hand-driven component is located in the first window, and the reset wheel is located in the second window.
[0013] Preferably, the connecting component includes an insertion pipe sleeve provided on the base and an insertion column provided at the corresponding position on the cover. When installing the cover on the base, the insertion column is inserted and connected in the corresponding insertion sleeve.
[0014] Preferably, the front end of the loading groove is a tapered opening and the taper of the tapered opening is the same as the taper of the front end of the syringe. When the syringe is loaded into the loading groove, its front end interface is exposed and the finger plate at the rear abuts against the rear vertical surface of the clamping boss.
[0015] Preferably, the base and each clamping boss are of an integrally injection-molded structure, and the first shaft seat located at the front part and the two guide rod supports located at the front part are integrally injection-molded at the rear part of the clamping boss.
[0016] The advantages and positive effects of the present invention are as follows:
[0017] The present invention provides a multi-lumen catheter flushing and sealing device, which is specifically used for the auxiliary use of medical staff to perform flushing and sealing operations on multi-lumen catheters. By forming a plurality of loading slots for placing a plurality of syringes between a plurality of clamping bosses, the simultaneous loading of a plurality of syringes is realized. The clamping loading method improves the operation convenience of installing and removing the syringes. The syringes can be installed and removed without complicated operations, which can reduce the operation burden.
[0018] The flushing and sealing device of the present invention uses a threaded rod and a hand-driven assembly to displace the push plate, and then synchronously operates a plurality of syringes. Therefore, it can ensure the synchronism of the flushing and sealing operations on each lumen of the multi-lumen catheter, and effectively prevent the blood return problem caused by the asynchronous flushing and sealing operations of each lumen. In the present invention, the hand-driven assembly is used to rotate and drive the threaded rod, and then drive the push plate to displace. The hand-pushing and rotating assembly converts the repeated downward pressing action of the operator into the rotating driving action on the threaded rod, achieving two effects: First, the operator can fully utilize the strength of the arm by pressing with the palm. Compared with the existing method that completely uses the strength of the hand, it is easier for the operator to apply force, so as to ensure that each syringe can be pushed simultaneously. Second, after each pressing action of the operator is released, the hand-driven assembly resets under the action of its torsion spring, constituting a flushing and sealing operation. Therefore, the flushing and sealing device of the present invention can ensure the effective implementation of the pulsatile flushing and sealing technique, that is, the standard operation mode of "pushing once and stopping once", and reduce the skill requirements for the operator. Brief Description of the Drawings
[0019] Figure 1 is a top view structural schematic diagram of the present invention;
[0020] Figure 2 is a top view structural schematic diagram of the present invention, with the cover removed;
[0021] Figure 3 is Figure 1 the front view structural schematic diagram of the hand-driven assembly in
[0022] Figure 4 is Figure 1 the three-dimensional structural schematic diagram of the hand-driven assembly in
[0023] In the figure:
[0024] 1. Base; 2. Clamping cover; 3. Syringe; 4. Clamping boss; 5. Loading groove; 6. Manual drive assembly; 6-1. Driving large gear; 6-2. Gear shaft; 6-3. Turntable; 6-4. Transmission gear; 6-5. Torsion spring; 6-6. Pressing arm rotating shaft; 6-7. Card slot; 6-8. Pressing arm; 6-9. Anti-slip convex pattern; 6-10. Tooth part; 6-11. Driving arm; 6-12. Ratchet tooth; 6-13. Ratchet wheel; 6-14. Driving small gear; 7. First window; 8. Connection assembly; 9. Reset wheel; 10. Second window; 11. Push plate; 12. Guide rod; 13. Guide rod support seat; 14. Second shaft seat; 15. First shaft seat; 16. Threaded rod; 17. Third shaft seat. Detailed implementation manner
[0025] To further understand the content, features and effects of the present invention, the following embodiments are given for detailed description.
[0026] Please refer to Figure 1 and Figure 2 , the flushing and sealing tube device of the multi-lumen catheter of the present invention includes a base 1. At the front part of the top of the base 1, a plurality of clamping bosses 4 are provided. Between adjacent clamping bosses 4, a loading groove 5 for accommodating a syringe 3 is formed. The syringe 3 is placed and installed in the loading groove 5, and after the flushing and sealing tube operation is completed, the syringe 3 is taken out from the loading groove 5. As shown in the figure, in this embodiment, four clamping bosses 4 are provided, and correspondingly, the number of loading grooves 5 is three. Therefore, three syringes 3 can be installed at the same time, which can basically meet the daily requirements of the flushing and sealing tube operation. However, it can be imagined that more loading grooves 5 can be provided and configured according to actual needs.
[0027] Generally, the syringe 3 used in the flushing and sealing tube operation is a 10 mL standard syringe. Therefore, in this embodiment, the size of the loading groove 5 is consistent with the size of the 10 mL standard syringe. In this embodiment, the front end of the loading groove 5 is a tapered opening and the taper of the tapered opening is the same as the taper of the front end of the syringe 3. When the syringe 3 is loaded into the loading groove 5, its front end interface is exposed, and the rear finger plate abuts against the rear vertical surface of the clamping boss 4. After the flushing and sealing tube operation is completed, the syringe 3 is lifted upward to disengage from the loading groove 5 and then can be taken off. During use, the outer cylinder of the syringe 3 is installed in the loading groove 5 and is fixed and positioned at the same time. Since the tapered part at the front end of the syringe 3 abuts against the tapered opening of the loading groove 5 and the finger plate abuts against the rear vertical surface of the clamping boss 4, during the flushing and sealing tube operation, the outer cylinder of the syringe 3 does not shift, and its piston is pushed to move. The exposed front end interface of the syringe 3 is used to connect the infusion tube, and a needle is provided at the front end of the infusion tube, and the needle is inserted and connected to the multi-lumen catheter.
[0028] At the rear part of the top of the base 1, a threaded rod 16 is installed by a first shaft seat 15. It further includes a push plate 11 with a threaded hole in the middle. The threaded rod 16 is located in the threaded hole. It also includes a manual drive assembly 6 that applies a driving force to the threaded rod 16. The manual drive assembly 6 is operated by an operator. When the threaded rod 16 rotates forward, the push plate 11 moves forward, pushing the piston of the syringe 3 more into the interior of the outer cylinder, and the flush solution is squeezed into the multi-lumen catheter. When the threaded rod 16 is rotated reversely, the push plate 11 moves backward to leave the rear end of the piston of the syringe 3.
[0029] In this embodiment, guide rods 12 are installed on both sides of the threaded rod 16 by guide rod supports 13. Guide holes are also provided at both ends of the push plate 11 and the guide rods 12 are located in the guide holes. The function of setting two guide rods 12 is to improve the stability when the push plate 11 moves forward and backward.
[0030] In this embodiment, the base 1 and each clamping boss 4 are of an integrally injection-molded structure. The first shaft seat 15 at the front and the two guide rod supports 13 at the front are integrally injection-molded at the rear of the clamping boss 4, which can improve the compactness of the overall structure and the overall structural strength to a certain extent.
[0031] Please refer to Figure 3 and Figure 4 , it can be seen that:
[0032] The manual drive assembly 6 includes a driving large gear 6-1 with a driving small gear 6-14 in the center, and the two are combined as one and thus rotate synchronously. It also includes a pressure arm 6-8 that uses a torsion spring 6-5 to provide a reset elastic force. A driving arm 6-11 with a tooth part 6-10 on the inner side is provided below the front part of the pressure arm 6-8, and the tooth part 6-10 meshes with the driving small gear 6-14 for transmission. In this embodiment, anti-slip ridges 6-9 are provided on the top of the pressure arm 6-8, which are used to generate a certain anti-slip function when the palm of the operator contacts the pressure arm 6-8. When the pressure arm 6-8 is pressed downward, the driving arm 6-11 moves downward, and the tooth part 6-10 drives the driving small gear 6-14 to rotate, and the driving large gear 6-1 rotates synchronously. When the pressure arm 6-8 is released, under the elastic force of the torsion spring 6-5, the pressure arm 6-8 rebounds upward, the tooth part 6-10 drives the driving small gear 6-14 to rotate reversely, and the driving large gear 6-1 rotates synchronously in the reverse direction. When reaching the high position, the tooth part 6-10 is separated from the driving small gear 6-14. When the pressure arm 6-8 is pressed again, the tooth part 6-10 is combined with the driving small gear 6-14 again and drives it to rotate.
[0033] In this embodiment, the driving pinion gear 6-14 and the driving large gear 6-1 have a gear shaft 6-2, and the gear shaft 6-2 is installed on a set of second shaft seats 14; the rear part of the pressing arm 6-8 has a pressing arm rotating shaft 6-6, and the pressing arm rotating shaft 6-6 is installed on a set of third shaft seats 17. A clamping groove 6-7 is provided on the side of the rear part of the pressing arm 6-8, and the upper part of the torsion spring 6-5 is embedded in the clamping groove 6-7. The lower part of the torsion spring 6-5 is bent outward and inserted into the jack on the third shaft seat 17. The collar in the middle of the torsion spring 6-5 is sleeved on the pressing arm rotating shaft 6-6. When pressing down the pressing arm 6-8, the torsion spring 6-5 further contracts and stores energy. When releasing the pressing arm 6-8, the torsion spring 6-5 resets under its own elastic force, and the pressing arm 6-8 lifts and resets.
[0034] It also includes a turntable 6-3 whose middle part is combined with the end of the threaded rod 16. A groove is provided on the rear vertical surface of the turntable 6-3, and ratchet teeth 6-12 are provided on the groove wall. A ratchet wheel 6-13 that cooperates with the ratchet teeth 6-12 is provided at the center of the groove. A transmission gear 6-4 that meshes with the driving large gear 6-1 is provided at the center of the ratchet wheel 6-13. The ratchet teeth 6-12 and the ratchet wheel 6-13 form a ratchet and pawl mechanism, enabling the driving arm 6-11 and its tooth part 6-10 to only produce a unidirectional driving effect on the threaded rod 16. As Figure 3 shown in, when the pressing arm 6-8 forces the driving arm 6-11 to move downward, the tooth part 6-10 drives the driving large gear 6-1 to rotate clockwise through the driving pinion gear 6-14, and the transmission gear 6-4 drives the ratchet wheel 6-13 to rotate counterclockwise in the groove. The elastic piece at the outer end of the ratchet wheel 6-13 is combined with the ratchet teeth 6-12, so that the turntable 6-3 can be driven to rotate counterclockwise, and correspondingly the threaded rod 16 rotates counterclockwise. When releasing the pressing arm 6-8, under the elastic force of the torsion spring 6-5, the pressing arm 6-8 and the driving arm 6-11 lift and reset upward. The tooth part 6-10 will drive the driving pinion gear 6-14 and the driving large gear 6-1 to rotate counterclockwise, and the transmission gear 6-4 drives the ratchet wheel 6-13 to rotate clockwise in the groove. At this time, the elastic piece at the outer end of the ratchet wheel 6-13 cannot be combined with the ratchet teeth 6-12, so the ratchet wheel 6-13 idles in the groove, and the turntable 6-3 and the threaded rod 16 remain in the current state.
[0035] In this embodiment, a shaft hole with a keyway is provided at the inner center of the turntable 6-3, and the end of the threaded rod 16 is inserted into the shaft hole and is connected by a key.
[0036] In this embodiment, a reset wheel 9 is also installed at the end of the threaded rod 16. By turning the reset wheel 9, the threaded rod 16 is driven to rotate in the opposite direction, and the push plate 11 can be returned to the initial position. The purpose of setting the reset wheel 9 is to improve the convenience of resetting the push plate 11. After completing the sealing operation, the push plate 11 needs to be reset. At this time, the threaded rod 16 can be manually driven to rotate in the opposite direction through the reset wheel 9, the turntable 6-3 rotates in the opposite direction, and the ratchet mechanism drives the driving gear 6-1 and the driving pinion 6-14 to rotate in the opposite direction through the transmission gear 6-4. Since the tooth portion 6-10 is separated from the driving pinion 6-14 in the released state, the reverse rotation of the driving gear 6-1 and the driving pinion 6-14 will not be restricted by the driving arm 6-11 and its tooth portion 6-10.
[0037] In this embodiment, it also includes a buckle cover 2 that is buckled and installed at the top rear of the base 1, a connecting component 8 is provided between the buckle cover 2 and the base 1, a first window 7 and a second window 10 are provided on the buckle cover 2, the pressure arm 6-8 of the hand-driven component 6 is located in the first window 7, and the reset wheel 9 is located in the second window 10. The buckle cover 2 is provided to seal the structure at the rear of the punching and sealing tube device (including the threaded rod 16, the left and right guide rods 12, the hand-driven component 6 and the reset wheel 9) inside, so that the operator's hand can be effectively prevented from entering the action mechanism to cause operational hazards, and foreign matter can be prevented from entering the action mechanism to cause jamming, and the neatness of the overall appearance can be improved by packaging the rear of the device. The piston of the syringe 3 is located in the space below the buckle cover 2, and the outer barrel of the syringe 3 is exposed to the outside, so that it is convenient to observe the amount of punching and sealing liquid in the syringe 3 during the operation of punching and sealing the tube.
[0038] In this embodiment, the connecting component 8 includes a plug-in sleeve arranged on the base 1 and a plug-in column arranged at a corresponding position on the buckle cover 2. When the buckle cover 2 is installed on the base 1, the plug-in column is plugged into the corresponding plug-in sleeve. When removing the buckle cover 2, it only needs to be lifted upward to separate the plug-in column from the plug-in sleeve below.
[0039] How to operate:
[0040] In the initial state, the push plate 11 returns to the initial position; the sealing liquid is extracted from multiple syringes 3, and the amount of sealing liquid should be kept consistent. Of course, the syringes 3 pre-filled with sealing liquid currently available on the market can also be selected; each syringe 3 is placed in each loading slot 5, and the outer tube of the syringe 3 should be fully lowered to the bottom of the loading slot 5, and then the outer tube of each syringe 3 is pushed laterally until the conical front end of the syringe 3 abuts against the conical mouth of the loading slot 5, the finger plate at the rear end of the outer tube abuts against the rear elevation of the clamping boss 4, and the rear end of each piston abuts against the front elevation of the push plate 11, completing the loading operation of each syringe 3, and covering the buckle cover 2; then the needles at the ends of the infusion tubes connected to each syringe 3 are respectively inserted into the lumens of the multi-lumen catheter;
[0041] The operator presses the palm of his hand on the pressing arm 6-8 of the hand-driven assembly 6, and presses the pressing arm 6-8 downward by exerting force on the arm to make it tilt downward until it reaches the low position (at this time, the surface of the pressing arm 6-8 is basically flush with the surface of the buckle cover 2 and cannot be further lowered). During this process, the driving arm 6-11 drives the threaded rod 16 to rotate a certain angle and the push plate 11 to move forward a certain distance through the transmission mechanism, and the sealing liquid in each syringe 3 is synchronously squeezed into each lumen of the multi-lumen catheter, and then the pressing arm 6-8 is released. Under the action of the reset elastic force of the torsion spring 6-5, the pressing arm 6-8 and the driving arm 6-11 are lifted up. When reaching the high position, the tooth portion 6-10 is disengaged from the driving pinion 6-14, and a squeezing operation is completed; the aforementioned operation is then repeated multiple times to realize multiple infusions of the sealing liquid into each lumen of the multi-lumen catheter, and realize the pulse-type sealing tube, that is, the standard operation mode of "one push and one stop";
[0042] After completing the tube sealing operation, operate the reset wheel 9 to drive the threaded rod 16 to rotate in the opposite direction, the push plate 11 moves backward to reset, open the buckle cover 2, and lift each syringe 3 upward to separate its outer tube from the loading slot 5, thereby completing the disassembly of each syringe 3.
Claims
1. An irrigation and sealing device for a multi-lumen catheter, characterized in that: It includes a base (1). At the front part of the top of the base (1), there are multiple clamping bosses (4). Between adjacent clamping bosses (4), a loading groove (5) for accommodating a syringe (3) is formed. At the rear part of the top of the base (1), a threaded rod (16) is installed by a first shaft seat (15). It also includes a push plate (11) with a threaded hole in the middle. The threaded rod (16) is located in the threaded hole. It further includes a hand-driven assembly (6) that applies a driving force to the threaded rod (16); the hand-driven assembly (6) includes a driving large gear (6-1) with a driving small gear (6-14) at the center, and also includes a pressing arm (6-8) that provides a reset elastic force by a torsion spring (6-5). Below the front part of the pressing arm (6-8), there is a driving arm (6-11) with teeth (6-10) on the inner side, and the teeth (6-10) are in meshing transmission with the driving small gear (6-14). It also includes a turntable (6-3) whose middle part is combined with the end of the threaded rod (16). On the rear vertical surface of the turntable (6-3), there is a groove and ratchet teeth (6-12) are provided on the groove wall. At the center of the groove, there is a ratchet wheel (6-13) that cooperates with the ratchet teeth (6-12). At the center of the ratchet wheel (6-13), there is a transmission gear (6-4) that meshes with the driving large gear (6-1).
2. The flushing and sealing device for the multi-lumen catheter according to claim 1, characterized in that: The driving small gear (6-14) and the driving large gear (6-1) have a gear shaft (6-2) and the gear shaft (6-2) is installed on a group of second shaft seats (14); the rear part of the pressing arm (6-8) has a pressing arm rotating shaft (6-6) and the pressing arm rotating shaft (6-6) is installed on a group of third shaft seats (17). At the side part of the rear part of the pressing arm (6-8), there is a clamping groove (6-7) and the upper part of the torsion spring (6-5) is embedded in the clamping groove (6-7). The lower part of the torsion spring (6-5) is bent outward and inserted into the jack on the third shaft seat (17).
3. The flushing and sealing device for the multi-lumen catheter according to claim 2, characterized in that: at At the inner center of the turntable (6-3), there is a shaft hole with a keyway. The end of the threaded rod (16) is inserted into the shaft hole and is connected by a key.
4. The flushing and sealing device for the multi-lumen catheter according to claim 3, characterized in that: A reset wheel (9) is also installed at the end of the threaded rod (16). By turning the reset wheel (9) to drive the threaded rod (16) to rotate in the reverse direction, the push plate (11) is retracted to the initial position.
5. The flushing and sealing device for the multi-lumen catheter according to claim 4, characterized in that: Anti-slip ridges (6-9) are provided on the top of the pressing arm (6-8).
6. The flushing and sealing device for the multi-lumen catheter according to claim 5, characterized in that: at On both sides of the threaded rod (16), a guide rod (12) is installed by a guide rod support seat (13). At both ends of the push plate (11), there are also guide holes and the guide rod (12) is located in the guide holes.
7. The flushing and sealing device for the multi-lumen catheter according to claim 6, characterized in that: It also includes a cover (2) that is buckled and installed at the rear part of the top of the base (1). A connecting component (8) is provided between the cover (2) and the base (1). A first window (7) and a second window (10) are provided on the cover (2). The pressing arm (6-8) of the hand-driven assembly (6) is located in the first window (7), and the reset wheel (9) is located in the second window (10).
8. The flushing and sealing device for the multi-lumen catheter according to claim 7, characterized in that: The connecting component (8) includes an insertion pipe sleeve provided on the base (1) and an insertion column provided at the corresponding position on the cover (2). When installing the cover (2) on the base (1), the insertion column is inserted and connected in the corresponding insertion sleeve.
9. The flushing and sealing device for the multi-lumen catheter according to claim 8, characterized in that: The front end of the loading groove (5) is a conical opening, and the taper of the conical opening is the same as that of the front end of the syringe (3). When the syringe (3) is loaded into the loading groove (5), its front end interface is exposed, and the finger plate at the rear abuts against the rear vertical surface of the clamping boss (4).
10. The flushing and sealing device for the multi-lumen catheter according to claim 8, characterized in that: The base (1) and each clamping boss (4) are integrally injection-molded structures. The first shaft seat (15) located at the front and the two guide rod support seats (13) located at the front are integrally injection-molded at the rear of the clamping boss (4).