An injection device for protective embolic agent in blood vessel cavity

Abstract

The present invention relates to the field of medical technology, and discloses an injection device for a protective embolic agent through a blood vessel cavity, comprising a first injection syringe and a second injection syringe, wherein the first injection syringe and the second injection syringe are externally detachably connected to a three-way joint, the interior of the three-way joint is fixedly connected to a connecting ring, the exterior of the connecting ring is detachably connected to a locking ring, the interior of the locking ring is threadedly connected to a connector first, the interior of the connector first is slidably connected to a connector first, the interior of the connector first is detachably connected to a connector second, and the interior of the connecting ring is slidably connected to multiple push rods. In the present invention, the difficulty of maintenance is reduced, and the elastic card plate, sealing ring, and connecting tube in the receiving groove cooperate with each other to form an excellent sealing barrier, effectively preventing leakage of the embolic agent, reducing irritation and adverse reactions to human tissue, and further improving the safety and reliability of treatment.

Description

Technical Field

[0001] The present invention relates to the field of medical technology, in particular to an injection device for a protective embolic agent within a blood vessel cavity. Background Art

[0002] Embolization, also known as embolic therapy, is the controlled injection of plugs into the blood vessels supplying the diseased organ through an arterial or intravenous catheter to cause occlusion and interruption of blood supply in order to control bleeding, treat tumors and vascular lesions, and eliminate the function of the diseased organ. Embolization is an important technique in interventional therapy and one of the three major techniques in interventional radiology, and has become an integral part of daily work.

[0003] Some existing intravascular protective embolic agent injection devices are mostly relatively simple in structure. Generally, a single injection syringe is connected to an injection line, and the piston is manually pushed to inject the embolic agent. However, this device has many shortcomings. On the one hand, the design of a single injection syringe leads to a limited storage capacity. In some treatment scenarios that require a large amount of embolic agent, frequent replacement of syringes is not only a waste of time, but also easily introduces air due to improper operation, affecting the injection effect of the embolic agent. On the other hand, during the injection process, the lack of effective sealing and precise pushing structure makes the embolic agent easy to leak, and it is difficult to ensure the accuracy of the injection dose, which may lead to poor treatment effect and even cause some medical risks. Therefore, in response to the above problems, an intravascular protective embolic agent injection device is proposed to solve the above problems. Summary of the Invention

[0004] The object of the present invention is to provide an injection device for a protective embolic agent through the vascular cavity to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides an injection device for a protective embolic agent through a vascular cavity, comprising an injection syringe 1 and an injection syringe 2, wherein the outside of the injection syringe 1 and the injection syringe 2 are detachably connected to a three-way joint, the inside of the three-way joint is fixedly connected to a connecting ring, the outside of the connecting ring is detachably connected to a locking ring, the inside of the locking ring is threadedly connected to a connector 1, the inside of the connector 1 is slidably connected to a connector 1, the inside of the connector 1 is detachably connected to a connector 2, the inside of the connecting ring is slidably connected to a plurality of push rods, one end of each of the push rods is fixedly connected to a sealing The cam is fixedly connected to the sealing ring on the outside of the push rod, and a push plate is fixedly connected to the side of the push rod away from the sealing ring. The middle part of the sealing ring is fixedly connected to the supporting cross bar. A sealing assembly is provided on the outside of the connector one, and an anti-falling assembly is provided on the inside of the connector one. The sealing assembly includes a connector two, the internal thread of the connector two is connected to the outside of the connector one, and an accommodating groove is provided inside the connector two. The inner wall of the accommodating groove is slidably connected to an elastic card plate, and the outside of the elastic card plate is slidably connected to a sealing ring, and the external thread of the connector one is connected to a sealing cover;

[0006] Preferably, the anti-falling component includes a flexible collar, the outer portion of which is fixedly connected to the outer portion of the second connector, a groove is provided inside the first connector, and the outer portion of the flexible collar contacts the inner wall of the groove;

[0007] Preferably, a connecting tube is detachably connected to the inner wall of the receiving groove, the outer portion of the connecting tube is slidably connected to the inner wall of the elastic clamping plate, and the outer portion of the sealing ring contacts the inner wall of the receiving groove;

[0008] Preferably, a plurality of receiving grooves are formed on the outside of the connecting ring, the outside of the push rod is slidably connected to the inner wall of the receiving groove, and the outside of the push plate is slidably connected to the inner wall of the receiving groove;

[0009] Preferably, the exterior of the sealing block contacts the exterior of the locking ring, and the exterior of the sealing ring contacts the exterior of the first connector;

[0010] Preferably, the exterior of the second connector contacts the inner wall of the connecting pipe, and the exterior of the second connector is fixedly connected to the connecting pipe;

[0011] Preferably, an anti-slip strip is fixedly connected to the outside of the locking ring, and the outside of the sealing ring is in contact with the inner wall of the locking ring.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. In the present invention, the coordinated operation of the first and second injection syringes can efficiently store protective embolic agents within the vascular cavity. When the piston is pushed, the embolic agent flows smoothly into the three-way connector and converges there. At the same time, the push rod in the connecting ring slides flexibly, driving the sealing ring and the sealing block to fit tightly together, effectively preventing leakage of the embolic agent. The locking ring and the connecting ring are detachably connected, which greatly facilitates the assembly and disassembly process of the device and reduces the difficulty of maintenance. In the sealing assembly, the second connector is tightly threaded with the first connector, and the elastic card, sealing ring and connecting tube in the receiving groove cooperate with each other to form an excellent sealing barrier, effectively preventing leakage of the embolic agent.

[0014] 2. In the present invention, the flexible collar in the anti-dropout assembly is cleverly engaged with the slot to firmly prevent the second connector from falling off, thereby achieving a stable device structure, good sealing, and convenient operation, greatly reducing the risk of embolic agent leakage, and comprehensively ensuring safety in use. The volume scales of the first and second injection syringes are clear, allowing doctors to intuitively and accurately control the injection volume of the embolic agent, avoiding the impact of improper dosage on the treatment effect, reducing irritation and adverse reactions to human tissues, and further improving the safety and reliability of treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 It is a side view schematic diagram of the overall structure of the present invention;

[0017] Figure 3 This is a structural diagram of a connector according to the present invention;

[0018] Figure 4 Schematic diagram of the structure of the connecting ring of the present invention;

[0019] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0020] Figure 6 for Figure 3 Enlarged view of point B in the middle;

[0021] Figure 7 This is a schematic diagram of the disassembly of the three-way connector and its internal structure of the present invention;

[0022] Figure 8 This is a schematic diagram of the disassembly of the connector 1 and its internal structure according to the present invention;

[0023] Figure 9 Schematic diagram of the sealing ring structure of the present invention.

[0024] Legend:

[0025] 1. Syringe 1; 2. Syringe 2; 3. T-joint; 4. Connecting ring; 5. Locking ring; 6. Connector 1; 7. Connector 1; 8. Connector 2; 9. Push rod; 10. Sealing ring; 11. Sealing block; 12. Push plate; 13. Support cross bar; 14. Receiving slot; 15. Connector 2; 16. Receiving slot; 17. Elastic clamping plate; 18. Sealing ring; 19. Connecting tube; 20. Sealing cover; 21. Anti-slip strip; 22. Connecting tube; 23. Flexible clamping ring; 24. Clamping slot. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Reference Figures 1 to 3 The present invention provides an embodiment of an injection device for a protective embolic agent within a vascular cavity, comprising an injection syringe 1 for storing the protective embolic agent within the vascular cavity. By pushing its piston, power is provided for the injection of the embolic agent, so that the embolic agent can flow out and enter subsequent connecting components and an injection syringe 2 2, which is also used to store the protective embolic agent within the vascular cavity. Similar to the function of the injection syringe 1, the embolic agent is pushed to a three-way connector 3 by pushing the piston. The outside of the injection syringe 1 and the injection syringe 2 2 are detachably connected with a three-way connector 3, which serves as a connecting hub and provides three connection ports to realize the connection between the injection syringe 1 and the injection syringe 2 and subsequent components, so that the embolic agent can flow between the components.

[0028] The interior of the three-way joint 3 is fixedly connected with a connecting ring 4, which plays a transition connection role inside the three-way joint 3, provides sliding space for the push rod 9, and provides basic support for the installation and connection of other components. The outside of the connecting ring 4 is detachably connected with a locking ring 5 for fastening the internal connector, and cooperates with the connecting ring 4 to achieve a detachable connection. The connector 6 and other components are fixed by rotating and tightening. At the same time, it cooperates with the sealing ring 10 and the sealing block 11 to enhance the sealing of the device. The internal thread of the locking ring 5 is connected to the connector 6, which is a key connecting component in the embolic agent flow path. The interior is used to accommodate and slide the connector 7, and the exterior is used to connect the sealing component. At the same time, the internal slot 24 cooperates with the anti-fall-off component to prevent the connector 8 from falling off.

[0029] The internal sliding connection of connector 16 is connected to connector 17, which slides inside connector 16 to achieve a detachable connection with connector 28, playing a transit transition role, ensuring that the embolic agent flows smoothly from connector 16 into connector 28. The internal detachable connection of connector 17 is connected to connector 28, which serves as the key outlet component for the embolic agent outflow device to enter the blood vessel cavity. It is connected to connector 17 and the embolic agent is injected into the blood vessel cavity through the connecting tube 22 connected to its outside. The internal sliding connection of connecting ring 4 is connected to multiple push rods 9, which slide inside connecting ring 4 to drive the sealing ring 10 and the sealing block 11 to move, thereby realizing the sealing function of the device when working.

[0030] During cleaning, the sealing ring 10 can be pushed out of the locking ring 5 for easy cleaning. One end of the multiple push rods 9 is fixedly connected to the sealing ring 10, which contacts the inner wall of the locking ring 5 and the outside of the connector 6 to form a sealing structure to prevent the embolic agent from leaking from the connection between the connecting ring 4 and the locking ring 5 and the connector 6. At the same time, the supporting cross bar 13 in the middle enhances its structural strength. The outside of the sealing ring 10 contacts the inner wall of the locking ring 5, and the outside of the sealing ring 10 contacts the outside of the connector 6. The outside of the push rod 9 is fixedly connected to a sealing block 11, which contacts the outside of the locking ring 5, further preventing the embolic agent from leaking from the connection gap between the connecting ring 4 and the locking ring 5, and helping to enhance the sealing performance of the device.

[0031] Reference Figures 4 to 7 The outside of the sealing block 11 is in contact with the outside of the locking ring 5. The push rod 9 is fixedly connected to the side away from the sealing ring 10 with a push plate 12, which provides the operator with a fulcrum for operating the push rod 9, making it easy to push the push rod 9 to achieve operations such as the entry and exit of the sealing ring 10, and sliding in the receiving groove 14 to ensure movement stability. The middle part of the sealing ring 10 is fixedly connected to the supporting cross bar 13, which is fixed in the middle part of the sealing ring 10, enhancing the structural strength and stability of the sealing ring 10, preventing it from deformation or damage when subjected to force, and ensuring the normal performance of the sealing function.

[0032] A plurality of receiving grooves 14 are provided on the outside of the connecting ring 4, which are provided on the outside of the connecting ring 4 to provide sliding tracks for the push rod 9 and the push plate 12 to ensure their flexible and stable movement, reduce sliding friction and prevent wear of components. The outside of the push rod 9 is slidably connected to the inner wall of the receiving groove 14, and the outside of the push plate 12 is slidably connected to the inner wall of the receiving groove 14. A sealing assembly is provided on the outside of the connecting piece 6, and the sealing assembly includes a connecting piece 2 15, which is threadedly connected to the connecting piece 6, and the internal receiving groove 16 is used to install sealing assembly components such as an elastic card plate 17, a sealing ring 18 and a connecting tube 19 to achieve the fixation and sealing functions of these components.

[0033] The internal thread of connector 2 15 is connected to the outside of connector 1 6, and a receiving groove 16 is provided inside connector 2 15, which is provided inside connector 2 15 to provide installation space for elastic card plate 17, sealing ring 18 and connecting tube 19, to ensure that each component is tightly and reasonably installed and to enhance the sealing effect. The inner wall of the receiving groove 16 is slidably connected with the elastic card plate 17, which slides on the inner wall of the receiving groove 16 and positions and fixes the connecting tube 19 through its own elastic deformation, and cooperates with the sealing ring 18 to further enhance the sealing effect. The outside of the elastic card plate 17 is slidably connected with the sealing ring 18, which slides on the outside of the elastic card plate 17 and contacts the inner wall of the receiving groove 16 to form a sealing barrier, thereby preventing the embolic agent from leaking from the connection between connector 2 15 and connector 1 6 and enhancing the sealing performance.

[0034] The inner wall of the accommodating groove 16 is detachably connected with a connecting tube 19, which is detachably connected on the inner wall of the accommodating groove 16 to connect the joint 2 8 and the connecting piece 2 15, providing a circulation channel for the embolic agent, and is positioned and fixed by the elastic clamping plate 17 to ensure stability. The outside of the joint 2 8 is in contact with the inner wall of the connecting tube 19, and the outside of the connecting tube 19 is slidably connected to the inner wall of the elastic clamping plate 17. The outside of the sealing ring 18 is in contact with the inner wall of the accommodating groove 16, and the external thread of the connecting piece 1 6 is connected with a sealing cover 20, which is threadedly connected to the connecting piece 2 15, further enhancing the sealing performance of the sealing assembly, preventing external impurities from entering, and protecting the internal elastic clamping plate 17, the sealing ring 18 and the connecting tube 19 and other components.

[0035] Reference Figures 8 and 9 The outside of the connector 8 is fixedly connected with a connecting tube 22, which is fixed to the outside of the connector 8 and serves as the final channel for the embolic agent to flow out of the device and into the blood vessel cavity. It has good flexibility and biocompatibility, ensuring that the embolic agent is smoothly injected into the blood vessel cavity. The outside of the locking ring 5 is fixedly connected with an anti-slip strip 21, which is fixed to the outside of the locking ring 5 to increase the friction between the operator's hand and the locking ring 5, making it easier to rotate the locking ring 5 for installation or removal operations and prevent slipping.

[0036] An anti-falling component is provided inside the connector 6, and the anti-falling component includes a flexible clamping ring 23, which is fixed on the outside of the connector 2 8. When the connector 2 8 is pushed into the interior of the connector 1 6, it enters the clamping groove 24 and engages with the inner wall to achieve secondary fixation of the connector 2 8 to prevent it from falling off during the injection process. The outside of the flexible clamping ring 23 is fixedly connected to the outside of the connector 2 8, and a clamping groove 24 is provided inside the connector 1 6. It is opened inside the connector 1 6 and cooperates with the flexible clamping ring 23 to provide a clamping space for the flexible clamping ring 23 to prevent the connector 2 8 from loosening or falling off, ensuring that the device is safe and stable to use. The outside of the flexible clamping ring 23 is in contact with the inner wall of the clamping groove 24.

[0037] Working principle: Connect syringe 1 and syringe 2 to the three-way joint 3 detachably, ensure the connection is firm, load the embolic agent into syringe 1 and syringe 2 respectively, push the pistons of syringe 1 and syringe 2 to allow the embolic agent to enter the three-way joint 3, connect joint 2 8 to the inside of joint 1 7, check whether the connection between joint 1 7 and joint 2 8 is normal, confirm that the push rod 9 slides smoothly inside the connecting ring 4, and that all parts are firmly connected. At the same time, pay attention to the middle of the sealing ring 10. The fixedly connected supporting cross bar 13 ensures that it is not damaged. When the embolic agent flows in the three-way joint 3, it passes through the joint 1 7, the joint 2 8, and finally is injected into the blood vessel cavity through the connecting tube 22 connected to the joint 2 8. The push rod 9 slides in the receiving groove 14. The sealing ring 10 and the sealing block 11 connected thereto can ensure the sealing between the connecting ring 4 and the locking ring 5. When cleaning, the locking ring 5 is unscrewed, and then the push rod 9 is pushed by the push plate 12. At this time, the sealing ring 10 slides out of the interior of the locking ring 5 under the push of the push rod 9, which is convenient for cleaning.

[0038] When connector 2 8 is pushed into the interior of connector 1 6 , the flexible clamping ring 23 on the outside will enter the inner wall of the card groove 24 and engage with it. Then connector 2 15 will be screwed to the outside of connector 1 6 , and then the sealing ring 18 will be placed into the inner wall of the accommodating groove 16 , and then the elastic card plate 17 will be placed into the inner wall of the sealing ring 18 , and then the connecting tube 19 will be placed into the interior of the elastic card plate 17 , and finally the sealing cover 20 will be screwed to the outside of connector 2 15 , thereby fixing connector 2 8 again, wherein the flexible clamping ring 23 and the card groove 24 can fix connector 2 8 for a second time to prevent it from falling off, and then the medicine will be injected through the connecting tube 22 .

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0040] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An injection device for a protective embolic agent in a blood vessel cavity, comprising a first injection syringe (1) and a second injection syringe (2), characterized in that: The injection syringe 1 (1) and the injection syringe 2 (2) are detachably connected to a three-way joint (3) on the outside, the three-way joint (3) is fixedly connected to a connecting ring (4) on the inside, the connecting ring (4) is detachably connected to a locking ring (5) on the outside, the locking ring (5) is internally threadedly connected to a connector 1 (6), the connector 1 (6) is internally slidably connected to a connector 1 (7), the connector 1 (7) is internally detachably connected to a connector 2 (8), the connecting ring (4) is internally slidably connected to a plurality of push rods (9), one end of the plurality of push rods (9) is fixedly connected to a sealing ring (10), the outside of the push rod (9) is fixedly connected to a sealing block (11), the side of the push rod (9) away from the sealing ring (10) is fixedly connected to a push plate (12), the sealing The middle part of the ring (10) is fixedly connected to the supporting cross bar (13), the outside of the connector 1 (6) is provided with a sealing component, the inside of the connector 1 (6) is provided with an anti-falling component, the sealing component includes a connector 2 (15), the inside of the connector 2 (15) is connected to the outside of the connector 1 (6) by threaded connection, the inside of the connector 2 (15) is provided with a receiving groove (16), the inner wall of the receiving groove (16) is slidably connected to an elastic clamping plate (17), the outside of the elastic clamping plate (17) is slidably connected to a sealing ring (18), the outside of the connector 1 (6) is threadedly connected to a sealing cover (20), the outside of the sealing block (11) is in contact with the outside of the locking ring (5), and the outside of the sealing ring (10) is in contact with the outside of the connector 1 (6); The anti-fall-off assembly comprises a flexible clamping ring (23), the exterior of the flexible clamping ring (23) is fixedly connected to the exterior of the second connector (8), a clamping groove (24) is provided inside the first connector (6), and the exterior of the flexible clamping ring (23) contacts the inner wall of the clamping groove (24).

2. The device for injecting a protective embolic agent into a blood vessel cavity according to claim 1, characterized in that: The inner wall of the receiving groove (16) is detachably connected to a connecting tube (19), the outer portion of the connecting tube (19) is slidably connected to the inner wall of the elastic clamping plate (17), and the outer portion of the sealing ring (18) is in contact with the inner wall of the receiving groove (16).

3. The device for injecting a protective embolic agent into a blood vessel cavity according to claim 2, characterized in that: The connecting ring (4) is provided with a plurality of receiving grooves (14) on the outside, the push rod (9) is slidably connected to the inner wall of the receiving groove (14) on the outside, and the push plate (12) is slidably connected to the inner wall of the receiving groove (14) on the outside.

4. The device for injecting a protective embolic agent into a blood vessel cavity according to claim 3, characterized in that: The exterior of the second connector (8) contacts the inner wall of the connecting pipe (19), and the exterior of the second connector (8) is fixedly connected to the connecting pipe (22).

5. The device for injecting a protective embolic agent into a blood vessel cavity according to claim 4, characterized in that: The outside of the locking ring (5) is fixedly connected to an anti-slip strip (21), and the outside of the sealing ring (10) is in contact with the inner wall of the locking ring (5).

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