Transvascular intracavity protective embolic agent injection device

Abstract

The invention relates to the technical field of medical treatment, and discloses a transvascular intracavity protective embolism agent injection device which comprises a first injection needle cylinder and a second injection needle cylinder, a three-way connector is detachably connected to the outer portion of the first injection needle cylinder and the outer portion of the second injection needle cylinder, and a connecting ring is fixedly connected to the interior of the three-way connector. A locking ring is detachably connected to the exterior of the connecting ring, a first connecting piece is in threaded connection with the interior of the locking ring, a first connector is slidably connected to the interior of the first connecting piece, a second connector is detachably connected to the interior of the first connector, and a plurality of push rods are slidably connected to the interior of the connecting ring. According to the invention, the maintenance difficulty is reduced, the elastic clamping plate, the sealing ring and the connecting pipe in the accommodating groove are mutually matched to form an excellent sealing barrier, the leakage of an embolic agent is effectively avoided, the stimulation and adverse reaction to human tissues are reduced, and the safety and reliability of treatment are further improved.

Description

Technical Field

[0001] The present invention relates to the field of medical technology, and particularly to an injection device for an intravascular protective embolizing agent. Background Art

[0002] Embolization, also known as embolization therapy, is to inject embolic materials into the supply vessels of the diseased organ through a catheter in the artery or vein in a controlled manner, so that it occludes, interrupts blood supply, in order to achieve the purpose of controlling bleeding, treating tumors and vascular diseases, and eliminating the function of the diseased organ. Embolization is an important technique in interventional therapy, and is also one of the three major techniques in interventional radiology, and has become the main part of daily work.

[0003] Most of the existing intravascular protective embolizing agent injection devices are relatively simple in structure. Generally, a single syringe is connected to an injection pipeline, and the piston is manually pushed to inject the embolizing agent. However, such a device has many deficiencies. On the one hand, the design of a single syringe results in limited storage capacity. In some treatment scenarios that require a large amount of embolizing agent, frequently replacing the syringe not only wastes time, but also easily introduces air due to improper operation, affecting the injection effect of the embolizing agent. On the other hand, during the injection process, there is a lack of effective sealing and precise pushing structure, making the embolizing agent prone to leakage and it is difficult to ensure the accuracy of the injection dose, which may lead to poor treatment effects and even cause some medical risks. Therefore, in view of the above problems, an injection device for an intravascular protective embolizing agent is proposed to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide an injection device for an intravascular protective embolizing agent to solve the problems raised in the above background art.

[0005] To achieve the above object, the present invention provides an injection device for an intravascular protective embolizing agent, which includes a first injection syringe and a second injection syringe. A three-way joint is detachably connected to the outside of the first injection syringe and the second injection syringe. An adapter ring is fixedly connected inside the three-way joint. A locking ring is detachably connected to the outside of the adapter ring. A first connecting member is threadedly connected inside the locking ring. A first joint is slidably connected inside the first connecting member. A second joint is detachably connected inside the first joint. A plurality of push rods are slidably connected inside the adapter ring. A sealing ring is fixedly connected to one end of the plurality of push rods. A sealing plug block is fixedly connected to the outside of the push rod. A push plate is fixedly connected to the side of the push rod away from the sealing ring. The middle of the sealing ring is fixedly connected to a support cross bar. A sealing assembly is arranged outside the first connecting member. An anti-detachment assembly is arranged inside the first connecting member. The sealing assembly includes a second connecting member, which is threadedly connected to the outside of the first connecting member. A receiving groove is opened inside the second connecting member. An elastic clamping plate is slidably connected to the inner wall of the receiving groove. A sealing ring is slidably connected to the outside of the elastic clamping plate. A sealing cover is threadedly connected to the outside of the first connecting member; Preferably, the anti-detachment assembly includes a flexible clamping ring, which is fixedly connected to the outside of the second joint. A clamping groove is opened inside the first connecting member. The outside of the flexible clamping ring is in contact with the inner wall of the clamping groove; Preferably, an adapter pipe is detachably connected to the inner wall of the receiving groove. The outside of the adapter pipe is slidably connected to the inner wall of the elastic clamping plate. The outside of the sealing ring is in contact with the inner wall of the receiving groove; Preferably, a plurality of receiving grooves are opened on the outside of the adapter ring. The outside of the push rod is slidably connected to the inner wall of the receiving groove. The outside of the push plate is slidably connected to the inner wall of the receiving groove; Preferably, the outside of the sealing plug block is in contact with the outside of the locking ring. The outside of the sealing ring is in contact with the outside of the first connecting member; Preferably, the outside of the second joint is in contact with the inner wall of the adapter pipe. A connecting pipe is fixedly connected to the outside of the second joint; Preferably, an anti-slip strip is fixedly connected to the outside of the locking ring. The outside of the sealing ring is in contact with the inner wall of the locking ring.

[0006] Compared with the prior art, the beneficial effects of the present invention are: 1. In the present invention, through the coordinated operation of syringe barrel one and syringe barrel two, it is possible to efficiently store the intravascular protective embolizing agent. When the piston is pushed, the embolizing agent smoothly flows into the tee joint, where it converges. At the same time, the push rod in the connecting ring slides flexibly, driving the sealing ring to closely fit with the sealing plug, effectively preventing the leakage of the embolizing agent. The locking ring and the connecting ring are detachably connected, which greatly facilitates the assembly and disassembly process of the device, reduces the maintenance difficulty. In the sealing assembly, the second connecting piece is tightly threadedly connected to the first connecting piece, and the elastic clamping plate, the sealing ring and the connecting pipe in the accommodating groove cooperate with each other to form an excellent sealing barrier, effectively preventing the leakage of the embolizing agent.

[0007] 2. In the present invention, the flexible snap ring in the anti-detachment assembly is ingeniously engaged with the card slot, firmly preventing the second joint from falling off, achieving the effects of a stable device structure, good sealing performance and convenient operation, greatly reducing the risk of embolizing agent leakage, and comprehensively ensuring the use safety. The capacity scales of syringe barrel one and syringe barrel two are clear, and doctors can intuitively and accurately control the injection amount of the embolizing agent, avoiding the influence on the treatment effect due to improper dosage, reducing the irritation and adverse reactions to human tissues, and further improving the safety and reliability of the treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a side view schematic diagram of the overall structure of the present invention; Figure 3 is a schematic diagram of the structure of joint one of the present invention; Figure 4 is a schematic diagram of the structure of the connecting ring of the present invention; Figure 5 is Figure 4 the enlarged view at A in Figure 6 is Figure 3 the enlarged view at B in Figure 7 is a disassembled schematic diagram of the tee joint and its internal structure of the present invention; Figure 8 is a disassembled schematic diagram of the first connecting piece and its internal structure of the present invention; Figure 9 is a schematic diagram of the structure of the sealing ring of the present invention.

[0009] LEGEND DESCRIPTION: 1. Syringe 1; 2. Syringe 2; 3. Three-way joint; 4. Connecting ring; 5. Locking ring; 6. Connector 1; 7. Joint 1; 8. Joint 2; 9. Push rod; 10. Sealing ring; 11. Sealing plug; 12. Push plate; 13. Support cross bar; 14. Storage groove; 15. Connector 2; 16. Accommodation groove; 17. Elastic clamping plate; 18. Sealing ring; 19. Connecting pipe; 20. Sealing cover; 21. Anti-slip strip; 22. Connecting tube; 23. Flexible clamping ring; 24. Card slot. Detailed implementation manner

[0010] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0011] Refer to Figures 1 to 3 , an embodiment provided by the present invention: An injection device for an intravascularly protective embolic agent includes a syringe 1, which is used to store the intravascularly protective embolic agent. By pushing its piston, it provides power for the injection of the embolic agent, so that the embolic agent can flow out and enter the subsequent connecting components and syringe 2, which is also used to store the intravascularly protective embolic agent and has a similar function to syringe 1. By pushing the piston, the embolic agent is pushed to the three-way joint 3. The three-way joint 3 is detachably connected to the outside of syringe 1 and syringe 2. As a connection hub, it provides three connection ports to realize the connection between syringe 1, syringe 2 and the subsequent components, so that the embolic agent can flow between the components.

[0012] A connecting ring 4 is fixedly connected inside the three-way joint 3, which plays a role of transition and connection inside the three-way joint 3, provides a sliding space for the push rod 9, and at the same time provides a 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, which is used to fasten the internal connecting parts, cooperates with the connecting ring 4 to realize detachable connection, and fixes components such as the connector 1 by rotating and tightening. At the same time, it cooperates with the sealing ring 10 and the sealing plug 11 to enhance the sealing performance of the device. The connector 1 is threadedly connected inside the locking ring 5. It is a key connecting component in the flow path of the embolic agent. It is used to accommodate and slide the joint 1 inside, and is used to connect the sealing component outside. At the same time, the card slot 24 inside it cooperates with the anti-detachment component to prevent the joint 2 from falling off.

[0013] The connector 16 is internally slidably connected with a connector 17, which slides inside the connector 16 to achieve a detachable connection with a connector 28, playing a transit transition role to ensure that the embolic agent flows smoothly from the connector 16 into the connector 28. The connector 17 is internally detachably connected with a connector 28, which serves as a key outlet component for the embolic agent to flow out of the device into the blood vessel cavity. It is connected to the connector 17 and the embolic agent is injected into the blood vessel cavity through the connecting tube 22 connected to its outside. The connecting ring 4 is internally slidably connected with a plurality of push rods 9, which slide inside the connecting ring 4 to drive the sealing ring 10 and the sealing block 11 to move, thereby achieving the sealing function of the device when working.

[0014] During cleaning, the sealing ring 10 can be pushed to slide out of the locking ring 5 for easy cleaning. One end of the multiple push rods 9 is fixedly connected with 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 with 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 assisting in enhancing the sealing of the device.

[0015] 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 plate 12 is fixedly connected to the side of the push rod 9 away from the sealing ring 10, providing the operator with a fulcrum for operating the push rod 9, facilitating the pushing of the push rod 9 to achieve operations such as the entry and exit of the sealing ring 10, and sliding in the storage 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, thereby enhancing the structural strength and stability of the sealing ring 10, preventing it from being deformed or damaged when subjected to force, and ensuring the normal performance of the sealing function.

[0016] A plurality of receiving grooves 14 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 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. The sealing assembly includes a connecting piece 2 15, which is threadedly connected to the connecting piece 6. The receiving groove 16 inside the connecting piece 15 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 fixing and sealing functions of these components.

[0017] The internal thread of the second connector 15 is connected to the external thread of the first connector 6. An accommodation groove 16 is provided inside the second connector 15, which is opened inside the second connector 15 to provide an installation space for the elastic clamping plate 17, the sealing ring 18, and the connecting pipe 19, ensuring the tight and reasonable installation of each component, enhancing the sealing effect. The inner wall of the accommodation groove 16 is slidably connected with an elastic clamping plate 17, which slides on the inner wall of the accommodation groove 16 and positions and fixes the connecting pipe 19 through its own elastic deformation, and cooperates with the sealing ring 18 to further enhance the sealing effect. The outer part of the elastic clamping plate 17 is slidably connected with a sealing ring 18, which slides on the outer part of the elastic clamping plate 17 and contacts the inner wall of the accommodation groove 16 to form a sealing barrier, preventing the embolic agent from leaking from the connection part between the second connector 15 and the first connector 6, and enhancing the sealing performance.

[0018] The inner wall of the accommodation groove 16 is detachably connected with a connecting pipe 19, which is detachably connected to the inner wall of the accommodation groove 16, the second connection joint 8, and the second connector 15, providing a flow channel for the embolic agent. It is positioned and fixed by the elastic clamping plate 17 to ensure stability. The outer part of the joint 8 contacts the inner wall of the connecting pipe 19, the outer part of the connecting pipe 19 is slidably connected to the inner wall of the elastic clamping plate 17, the outer part of the sealing ring 18 contacts the inner wall of the accommodation groove 16, and the outer part of the first connector 6 is threadedly connected with a sealing cap 20, which is threadedly connected to the second connector 15, further enhancing the sealing performance of the sealing assembly, preventing external impurities from entering, and protecting internal components such as the elastic clamping plate 17, the sealing ring 18, and the connecting pipe 19.

[0019] Refer to Figures 8 to 9 , the outer part of the joint 8 is fixedly connected with a connecting pipe 22, which is fixed to the outer part of the joint 8 and serves as the final channel for the embolic agent to flow out of the device and into the blood vessel lumen. It has good flexibility and biocompatibility, ensuring the smooth injection of the embolic agent into the blood vessel lumen. The outer part of the locking ring 5 is fixedly connected with an anti-slip strip 21, which is fixed to the outer part of the locking ring 5, increasing the friction between the operator's hand and the locking ring 5, facilitating the rotation of the locking ring 5 for installation or disassembly operations, and preventing slipping.

[0020] An anti-detachment component is provided inside the first connector 6. The anti-detachment component includes a flexible clamping ring 23, which is fixed to the outer part of the joint 8. When the joint 8 is pushed into the inside of the first connector 6, it enters the card slot 24 and engages with the inner wall, realizing the secondary fixation of the joint 8 and preventing it from detaching during the injection process. The outer part of the flexible clamping ring 23 is fixedly connected to the outer part of the joint 8. A card slot 24 is provided inside the first connector 6, which is opened inside the first connector 6 and cooperates with the flexible clamping ring 23 to provide a clamping space for the flexible clamping ring 23, preventing the joint 8 from loosening or detaching, and ensuring the safe and stable use of the device. The outer part of the flexible clamping ring 23 contacts the inner wall of the card slot 24.

[0021] Working principle: The syringe 1 and the syringe 2 are respectively detachably connected to the three-way joint 3 to ensure a firm connection. The embolization agent is respectively loaded into the syringe 1 and the syringe 2. By pushing the pistons of the syringe 1 and the syringe 2, the embolization agent enters the interior of the three-way joint 3. Connect the joint 2 8 to the interior of the joint 1 7, and check whether the connection between the joint 1 7 and the joint 2 8 is normal. Confirm that the push rod 9 slides smoothly inside the connecting ring 4 and all components are firmly connected. At the same time, pay attention to the support cross bar 13 fixedly connected to the middle of the sealing ring 10 to ensure that it is not damaged. When the embolization agent flows in the three-way joint 3, it passes through the joint 1 7 and 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, and the connected sealing ring 10 and sealing plug 11 can ensure the sealing between the connecting ring 4 and the locking ring 5. When cleaning, unscrew the locking ring 5, and then push the push rod 9 through the push plate 12. At this time, under the push of the push rod 9, the sealing ring 10 slides out of the interior of the locking ring 5, which is convenient for cleaning.

[0022] When the joint 2 8 is pushed into the interior of the connecting member 1 6, the flexible retaining ring 23 on the outside will enter the inner wall of the card slot 24 and engage with it. Then, screw the connecting member 2 15 tightly on the outside of the connecting member 1 6. Then, place the sealing ring 18 on the inner wall of the receiving groove 16, and then place the elastic clamping plate 17 on the inner wall of the sealing ring 18. Then, place the connecting pipe 19 into the elastic clamping plate 17, and finally screw the sealing cover 20 tightly on the outside of the connecting member 2 15. In this way, the joint 2 8 can be fixed again. The flexible retaining ring 23 and the card slot 24 can perform secondary fixation on the joint 2 8 to prevent it from falling off. Then, the medicine will be injected through the connecting tube 22.

[0023] It should be noted that in this article, relational terms such as first and second are only used 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 term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0024] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection device for an intravascular protective embolizing agent, comprising a first injection syringe (1) and a second injection syringe (2), characterized in that: The outer part of the injection syringe one (1) and the injection syringe two (2) is detachably connected with a three-way joint (3). An adapter ring (4) is fixedly connected inside the three-way joint (3). A locking ring (5) is detachably connected to the outer part of the adapter ring (4). A connecting piece one (6) is threadedly connected inside the locking ring (5). A joint one (7) is slidably connected inside the connecting piece one (6). A joint two (8) is detachably connected inside the joint one (7). A plurality of push rods (9) are slidably connected inside the adapter ring (4). One end of each of the plurality of push rods (9) is fixedly connected with a sealing ring (10). A sealing plug block (11) is fixedly connected to the outer part of the push rod (9). A push plate (12) is fixedly connected to the side of the push rod (9) away from the sealing ring (10). The middle part of the sealing ring (10) is fixedly connected to the support cross bar (13). A sealing assembly is arranged on the outer part of the connecting piece one (6). An anti-detachment assembly is arranged inside the connecting piece one (6). The sealing assembly includes a connecting piece two (15). The connecting piece two (15) is threadedly connected to the outer part of the connecting piece one (6). A receiving groove (16) is formed inside the connecting piece two (15). An elastic clamping plate (17) is slidably connected to the inner wall of the receiving groove (16). A sealing ring (18) is slidably connected to the outer part of the elastic clamping plate (17). A sealing cover (20) is threadedly connected to the outer part of the connecting piece one (6).

2. The injection device for an intravascular protective embolizing agent according to claim 1, characterized in that: The anti-detachment assembly includes a flexible clamping ring (23). The outer part of the flexible clamping ring (23) is fixedly connected to the outer part of the joint two (8). A clamping groove (24) is formed inside the connecting piece one (6). The outer part of the flexible clamping ring (23) is in contact with the inner wall of the clamping groove (24).

3. The injection device for a transvascular luminal protective embolization agent according to claim 2, characterized in that: An adapter pipe (19) is detachably connected to the inner wall of the receiving groove (16). The outer part of the adapter pipe (19) is slidably connected to the inner wall of the elastic clamping plate (17). The outer part of the sealing ring (18) is in contact with the inner wall of the receiving groove (16).

4. An injection device for an intravascular protective embolizing agent according to claim 1, characterized in that: A plurality of receiving grooves (14) are formed on the outer part of the adapter ring (4). The outer part of the push rod (9) is slidably connected to the inner wall of the receiving groove (14). The outer part of the push plate (12) is slidably connected to the inner wall of the receiving groove (14).

5. The injection device for an intravascular protective embolizing agent according to claim 1, characterized in that: The outer part of the sealing plug block (11) is in contact with the outer part of the locking ring (5). The outer part of the sealing ring (10) is in contact with the outer part of the connecting piece one (6).

6. The injection device for an intravascular protective embolizing agent according to claim 4, characterized in that: The outer part of the joint two (8) is in contact with the inner wall of the adapter pipe (19). A connecting pipe (22) is fixedly connected to the outer part of the joint two (8).

7. An injection device for a transvascular intraluminal protective embolizing agent according to claim 1, characterized in that: An anti-slip strip (21) is fixedly connected to the outer part of the locking ring (5). The outer part of the sealing ring (10) is in contact with the inner wall of the locking ring (5).

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