External catheter assembly for an implantable venous infusion port

Abstract

The application relates to the technical field of medical treatment and discloses an external catheter assembly for an implantable venous infusion port, which comprises an infusion port, an infusion device connected with the infusion port, a distribution protection assembly connected with an end of the infusion device far from the infusion port, an external catheter I arranged at the other end of the infusion port far from the infusion device and communicated with the infusion port, an external catheter II arranged at the other end of the external catheter I far from the infusion port and communicated with the external catheter I, and a flying wing fixing assembly, an identification fixing assembly and the distribution protection assembly arranged in sequence from left to right between the external catheter I and the external catheter II. The external catheter assembly for the implantable venous infusion port can expand the flying wing plate to 0 DEG, and medical adhesive tape or other fixing devices are used to paste or fix the flying wing plate on the skin of a patient, so that displacement of the external catheter I can be avoided; when the infusion device and the external catheter I are taken, the flying wing plate can be rotated to 90 DEG, so that one end of the infusion device is convenient for medical staff to take.

Description

Technical Field

[0001] This invention relates to the field of medical technology, specifically to an external catheter assembly for implantable venous access ports. Background Technology

[0002] A special treatment method often used in major surgeries and critical care is called an implantable port-a-cath system. Depending on the implantation site, ports-a-caths can be divided into chest wall ports and arm ports. The main implantation methods are percutaneous venous puncture and transvascular intervention. Port-a-caths are primarily used for intravenous infusion of high-concentration chemotherapy drugs, parenteral nutrition, blood transfusions, and blood sample collection. The main procedure involves inserting a deep vein catheter into a specific deep vein, internal jugular vein, or subclavian vein, allowing for relatively long-term placement. Because of its ease of long-term placement, it is suitable for patients requiring long-term care. For patients undergoing intravenous infusion therapy, implantable port-a-cath systems can reduce the number of peripheral venous punctures, lower the risk of complications such as phlebitis, and improve patients' quality of life. Simultaneously, they can tolerate the infusion of hypertonic and irritating drugs, avoiding damage to peripheral blood vessels. Furthermore, in the treatment of critically ill patients, where rapid and reliable intravenous access is needed for large-volume fluid resuscitation, blood transfusions, and the infusion of vasoactive drugs, implantable port-a-cath systems can provide large-diameter, high-flow access, ensuring the smooth progress of treatment. For patients in shock, timely and rapid replenishment of blood volume via a deep vein catheter is one of the key measures to save lives.

[0003] Existing implantable venous port systems, while capable of shunting external catheters, lack an external catheter fixation component. When connecting the external catheter to the port, the end that is attached to the skin is prone to displacement, affecting its normal use. Furthermore, there is no corresponding shunt tube limiting structure, which can cause the shunt tube to bend during use, and in severe cases, prevent infusion. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an external catheter assembly for implantable venous access ports, which can effectively solve the problems in the prior art.

[0005] The technical solution adopted in this invention is: an external catheter assembly for an implantable venous infusion port, including an infusion port and an infusion set connected to the infusion port, a dispensing protection assembly connected to the end of the infusion set away from the infusion port, an external catheter one connected to the other end of the infusion port away from the infusion set, an external catheter two connected to the other end of the external catheter one away from the infusion port, and the two communicating with each other, and a wing fixation assembly, an identification fixation assembly and a dispensing protection assembly arranged sequentially from left to right between the external catheter one and the external catheter two;

[0006] The flying wing fixing assembly includes a fixing sleeve 1. The fixing sleeve 1 has a limiting groove 1 adapted to the external conduit 1 at one end away from the center line. Connecting rods are fixedly installed on both sides of the fixing sleeve 1 away from the external conduit 1. The flying wing plate is rotatably installed on the fixing sleeve 1 through the connecting rods.

[0007] The marking fixing component includes a fixing sleeve two, on one end of the fixing sleeve two away from the center line a marking plate is fixedly installed and on the other end away from the marking plate a connecting plate is fixedly installed, and the end of the connecting plate away from the marking plate is snapped into a splitting plate.

[0008] The distribution protection component includes a lower housing, a limiting frame, and an upper housing. The lower housing and the upper housing have the same structure. A transparent frame is provided at the other end of the upper housing away from the lower housing. A socket is fixedly installed at the end of the lower housing near the upper housing. A fixing rod is fixedly installed at the end of the upper housing near the lower housing. The socket and the fixing rod are plug-in installed.

[0009] The fixing sleeve 2 is provided with a limiting groove 2 through one side of the external conduit 2 to the external conduit 1, and the two ends away from the center line of the limiting groove 2 are fixedly installed with anti-slip sleeve 2 that is compatible with the external conduit 1.

[0010] A male buckle is fixedly installed at one end of the connecting plate near the splitting plate, and a female buckle is fixedly installed at one end of the splitting plate near the connecting plate. The female buckle and the male buckle are connected by a snap-fit.

[0011] A Y-shaped distribution groove is provided on the outer edge of the limiting frame. The two ends of the limiting frame away from the center line are fixedly installed with card blocks. A card seat is fixedly installed on the end of the lower shell near the card block. A card slot is provided on the end of the card seat near the card block. The card slot is adapted to the card block. The end of the card seat near the card block adopts a bevel design.

[0012] The socket has a positioning groove 1 and a positioning groove 2 along its inner edge. The end of the fixing rod near the socket is fixedly installed with a plug rod, a plug block, a limiting block and a fixing rod in sequence. The limiting block is compatible with the positioning groove 1 and the plug block is compatible with the positioning groove 2.

[0013] Limiting plates are fixedly installed at both ends of the infusion set away from the center line of the external catheter. A connecting block with a triangular cross-section is fixedly installed at the other end of the infusion set away from the limiting plate. A limiting plate adapted to the external catheter is fixedly installed on one side of the connecting block.

[0014] Through the above technical solution, the design of the second anti-slip sleeve allows the anti-slip sleeve to be inserted into both ends of the second fixing sleeve after the marking and fixing component has been moved to the appropriate position. This increases the contact area with the external catheter and prevents the marking and fixing component from moving at one point on the external catheter. After the marking and fixing component is connected, one side of the connecting plate can be clipped onto the collar of the medical staff or patient, depending on the actual fixing position. Then, the female buckle of the split plate is inserted into the male buckle, thus achieving the connection between the two. The cooperation between the male and female buckles facilitates quick disassembly and fixes the output end to prevent it from falling off and affecting normal use. The design of the distribution slot allows the distribution tube to be placed in it according to the actual situation, which can play a limiting role. Furthermore, when using different distribution tubes, the design of the locking block and slot facilitates quick replacement of the limiting frame, making it convenient to... The quick-change design enhances its practicality. Through the cooperation of the limiting block and positioning groove one, and the insert block and positioning groove two, when installing the upper and lower housings, the insert rod, insert block, limiting block, and fixing rod can be inserted into the socket. Then, the limiting block and positioning groove one abut against each other, and the insert block and positioning groove two abut against each other, allowing for quick installation of the upper and lower housings. When installing the distribution tube, it can be installed inside, providing protection for the internal distribution tube. When connecting the infusion set to the external tubing one, align the limiting plate two on the connecting block with the external tubing one, allowing the external tubing one to snap into the limiting plate two. Simultaneously, the limiting plate one can limit and fix the infusion set, accurately connecting it to the external tubing one, ensuring a tight connection and preventing liquid leakage. The triangular structure of the connecting block enhances the stability of the connection, preventing the infusion set and external tubing one from easily separating during use.

[0015] Preferably, the fixed sleeve has multiple equally spaced mounting slots at one end near the limiting groove, and the fixed sleeve has an anti-slip sleeve adapted to the external conduit fixedly mounted through the mounting slots.

[0016] With the above technical solution, when installing the flying wing fixing component, the anti-slip sleeve is embedded in the mounting groove of the fixing sleeve, and then the external guide tube is placed in the limiting groove. The anti-slip sleeve can increase the friction between the anti-slip sleeve and the external guide tube, preventing the flying wing fixing component from sliding on the external guide tube, thereby improving the stability of the flying wing fixing component and preventing the flying wing fixing component from shifting at one point on the external guide tube, thus affecting its normal use.

[0017] Preferably, the wing plate has a rotation range of 0° to 90°, and the upper and lower ends of the wing plate are provided with multiple anti-slip patterns that are evenly distributed and have a "strip-shaped" cross-section. The wing plate and the connecting rod are provided with two identical patterns that are symmetrically distributed about the center line of the fixing sleeve.

[0018] With the above technical solution, when fixing the catheter, the wing plate is rotated and unfolded to 0° around the connecting rod. Using the anti-slip texture on the wing plate, medical tape or other fixing devices are used to stick or fix the wing plate to the patient's skin, which can prevent the external catheter from shifting. When picking up the infusion set and the external catheter, the wing plate can be rotated to 90° around the connecting rod, which makes it easier for medical staff to pick up one end of the infusion set, which can improve its versatility in use and make it easy to adjust according to different working conditions.

[0019] Preferably, the outer side of the distribution protection component is provided with a plurality of connecting sleeves II, which are adapted to the external conduit I and the external conduit II. The outer edges of the lower shell and the upper shell are provided with fixing grooves, which are adapted to the connecting sleeves II.

[0020] Through the above technical solution, the design of the second connecting sleeve allows it to be snapped into the fixing groove. This not only protects the connection end between the first external conduit and the distribution protection component, but also serves as a positioning function, preventing the first external conduit from shifting and causing wear, which would affect normal use.

[0021] Preferably, the infusion port is fixedly installed with a connector and silicone at one end near the infusion set, and a connector is fixedly installed at one end of the infusion set near the infusion port. An injection needle adapted to the silicone is inserted through one side of the connector. A puncture needle adapted to the infusion port is provided on one side of the infusion set. A tube lock is provided at the end of the infusion port away from the connector, and an implantable catheter is provided at the end of the infusion port near the tube lock.

[0022] With the above technical solution, when connecting the infusion port to the infusion set, the syringe on the connection port is inserted into the silicone to make the connection port fit tightly. During puncture, the puncture needle is used to perform the puncture operation through the infusion port.

[0023] Compared with the prior art, the present invention provides an external catheter assembly for implantable venous access ports, which has the following advantages:

[0024] This external catheter assembly for implantable venous access ports features a wing-shaped fixation component. During installation, the anti-slip sleeve is embedded into the mounting groove of the fixation sleeve, improving the stability of the wing-shaped fixation component and preventing displacement at the external catheter. Furthermore, the wing plate can be rotated around the connecting rod to 0° and then attached or fixed to the patient's skin using medical tape or other securing devices, preventing displacement of the external catheter. When handling the infusion set and external catheter, the wing plate can be rotated around the connecting rod to 90°, facilitating the handling of one end of the infusion set by medical personnel. This design enhances the versatility of its use and allows for adjustments based on different work conditions.

[0025] This external catheter assembly for implantable venous access ports can be positioned to lock one side of the connecting plate onto the collar of the patient or healthcare worker. The location can be selected based on the actual fixation position. Then, the female buckle of the disassembly plate is inserted into the male buckle, thus achieving the connection between the two. The cooperation between the male and female buckles facilitates quick disassembly and fixes the output end to prevent it from falling off and affecting normal use. It not only provides secondary positioning for the catheter but also facilitates the observation of identification information by medical staff.

[0026] This external catheter assembly for implantable venous access ports allows for quick installation of the upper and lower housings by abutting the limiting block and positioning groove one, and the insertion block and positioning groove two. When installing the distribution tube, it can be installed inside, which can help protect the internal distribution tube. The distribution groove design allows the distribution tube to be placed in it according to the actual situation, which can also limit its position. Furthermore, when using different distribution tubes, the design of the locking block and the locking groove allows for quick replacement of the limiting frame, which can facilitate quick replacement, thereby improving its practicality and preventing bending. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0028] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0029] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 ;

[0030] Figure 4 This is a schematic diagram of the three-dimensional structure of the infusion port of the present invention;

[0031] Figure 5 This is a schematic diagram of the disassembled structure of the infusion port of the present invention;

[0032] Figure 6 This is a schematic diagram of the installation structure of the limiting plate and the connection port of the present invention;

[0033] Figure 7 This is a schematic diagram of the installation structure of external conduit one and external conduit two of the present invention;

[0034] Figure 8 This is a schematic diagram of the disassembled structure of the flying wing fixing component of the present invention. Figure 1 ;

[0035] Figure 9 This is a schematic diagram of the disassembled structure of the flying wing fixing component of the present invention. Figure 2 ;

[0036] Figure 10This is a schematic diagram of the disassembled structure of the fixed component of the present invention. Figure 1 ;

[0037] Figure 11 This is a schematic diagram of the disassembled structure of the fixed component of the present invention. Figure 2 ;

[0038] Figure 12 This is a schematic diagram of the installation structure of the external conduit and the distribution protection component of the present invention.

[0039] Figure 13 Schematic diagram of the disassembled structure of the protection component of this invention Figure 1 ;

[0040] Figure 14 Schematic diagram of the disassembled structure of the protection component of this invention Figure 2 ;

[0041] Figure 15 This is a schematic diagram of the cross-sectional structure of the protective component allocated in this invention;

[0042] Figure 16 This is a schematic diagram of the disassembled structure of the socket and connecting rod of the present invention.

[0043] The components include: 1. Infusion port; 2. Connecting port; 3. Silicone; 4. Tube lock; 5. Implantable catheter; 6. Infusion set; 7. Limiting plate one; 8. External catheter one; 9. Connecting block; 10. Limiting plate two; 11. Wing fixing assembly; 1101. Fixing sleeve one; 1102. Limiting groove one; 1103. Mounting groove one; 1104. Anti-slip sleeve one; 1105. Connecting rod; 1106. Wing plate; 1107. Anti-slip texture; 13. Marking fixing assembly; 1301. Fixing sleeve two; 1302. Limiting groove two; 1303. Anti-slip sleeve two; 1304. Marking plate; 1305. Connecting plate; 13 06. Male buckle; 1307. Split plate; 1308. Female buckle; 14. Connecting sleeve two; 15. Distribution protection component; 1501. Lower housing; 1502. Fixing groove; 1503. Limiting frame; 1504. Distribution groove; 1505. Locking block; 1506. Locking seat; 1507. Locking slot; 1508. Socket; 1509. Positioning groove one; 1510. Positioning groove two; 1511. Insert rod; 1512. Inserting block; 1513. Limiting block; 1514. Fixing rod; 1515. Upper housing; 1516. Transparent frame; 16. External conduit two; 17. Connecting port; 18. Injection needle. Detailed Implementation

[0044] 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.

[0045] Example 1: As Figure 1-16 As shown, the external catheter assembly for an implantable venous port provided by the present invention includes an infusion port 1 and an infusion set 6 connected to the infusion port 1. The infusion set 6 is connected to a dispensing protection assembly 15 at one end away from the infusion port 1. An external catheter 1-8 is provided at the other end of the infusion port 1 away from the infusion set 6 and communicates with it. An external catheter 2-16 is provided at the other end of the external catheter 1-8 away from the infusion port 1 and the two are interconnected. A wing fixation assembly 11, an identification fixation assembly 13 and a dispensing protection assembly 15 are arranged sequentially from left to right between the external catheter 1-8 and the external catheter 2-16.

[0046] The flying wing fixing assembly 11 includes a fixing sleeve 1101. The fixing sleeve 1101 has a limiting groove 1102 adapted to the external conduit 8 at one end away from the center line. Connecting rods 1105 are fixedly installed on both sides of the fixing sleeve 1101 away from the external conduit 8. The flying wing plate 1106 is rotatably installed on the fixing sleeve 1101 through the connecting rods 1105.

[0047] The marking fixing component 13 includes a fixing sleeve 1301. A marking plate 1304 is fixedly installed at one end of the fixing sleeve 1301 away from the center line, and a connecting plate 1305 is fixedly installed at the other end of the fixing sleeve 1301 away from the marking plate 1304. A splitting plate 1307 is snapped onto one end of the connecting plate 1305 away from the marking plate 1304.

[0048] The distribution protection component 15 includes a lower housing 1501, a limiting frame 1503, and an upper housing 1515. The lower housing 1501 and the upper housing 1515 have the same structure. A transparent frame 1516 is provided at the other end of the upper housing 1515 away from the lower housing 1501. A socket 1508 is fixedly installed at the end of the lower housing 1501 near the upper housing 1515. A fixing rod 1514 is fixedly installed at the end of the upper housing 1515 near the lower housing 1501. The socket 1508 and the fixing rod 1514 are plug-in installed.

[0049] Specifically, the fixed sleeve 1101 has multiple equally spaced mounting slots 1103 at one end near the limiting groove 1102. The fixed sleeve 1101 is fixedly installed with an anti-slip sleeve 1104 that is compatible with the external conduit 8 through the mounting slots 1103. The advantage is that when installing the flying wing fixing assembly 11, the anti-slip sleeve 1104 is embedded in the mounting slots 1103 of the fixed sleeve 1101, and then the external conduit 8 is placed in the limiting groove 1102. The anti-slip sleeve 1104 can increase the friction between the flying wing fixing assembly 11 and the external conduit 8, preventing the flying wing fixing assembly 11 from sliding on the external conduit 8, thereby improving the stability of the flying wing fixing assembly 11 and preventing the flying wing fixing assembly 11 from shifting at the external conduit 8, thus affecting its normal use.

[0050] Specifically, the wing plate 1106 has a rotation range of 0° to 90°. Multiple anti-slip patterns 1107, evenly spaced and with a "strip-shaped" cross-section, are provided at both the upper and lower ends of the wing plate 1106. The wing plate 1106 and the connecting rod 1105 have two identical patterns, symmetrically distributed about the center line of the fixing sleeve 1101. The advantage is that when fixing the catheter, the wing plate 1106 can be rotated around the connecting rod 1105 to 0°, and the anti-slip patterns 1107 on the wing plate 1106 can be used to attach or fix the wing plate 1106 to the patient's skin using medical tape or other fixing devices, preventing displacement of the external catheter 8. When handling the infusion set 6 and the external catheter 8, the wing plate 1106 can be rotated around the connecting rod 1105 to 90°, making it easier for medical personnel to handle one end of the infusion set 6. This increases its versatility in use and allows for adjustments based on different working conditions.

[0051] Specifically, the fixing sleeve 2 1301 extends from the external conduit 2 16 to one side of the external conduit 1 8, through which a limiting groove 2 1302 is opened. At both ends away from the center line of the limiting groove 2 1302, anti-slip sleeves 2 1303 adapted to the external conduit 1 8 are fixedly installed. The advantage is that, through the design of the anti-slip sleeves 2 1303, when the marking fixing component 13 moves to the appropriate position, the anti-slip sleeves 2 1303 can be inserted into both ends of the fixing sleeve 2 1301, thereby increasing the contact area with the external conduit 1 8 and preventing the marking fixing component 13 from moving at the external conduit 1 8.

[0052] Example 2: Figure 2-16 As shown, this is an improvement on the previous embodiment.

[0053] Specifically, a male buckle 1306 is fixedly installed on one end of the connecting plate 1305 near the splitting plate 1307, and a female buckle 1308 is fixedly installed on the other end of the splitting plate 1307 near the connecting plate 1305. The female buckle 1308 and the male buckle 1306 are connected by a snap-fit. The advantage is that after the identification fixing component 13 is connected, one side of the connecting plate 1305 can be snapped onto the collar of the doctor or patient. The actual fixing position can be selected according to the actual fixing position. Then, the female buckle 1308 of the splitting plate 1307 is snapped into the male buckle 1306, and the connection between the two can be realized. The cooperation between the male buckle 1306 and the female buckle 1308 can facilitate quick disassembly and fix the output end to prevent it from falling off and affecting normal use.

[0054] Specifically, a Y-shaped distribution groove 1504 is provided on the outer edge of the limiting frame 1503. Locking blocks 1505 are fixedly installed at both ends of the limiting frame 1503 away from the center line. A locking seat 1506 is fixedly installed at the end of the lower housing 1501 near the locking block 1505. A locking groove 1507 is provided at the end of the locking seat 1506 near the locking block 1505. The locking groove 1507 is compatible with the locking block 1505. The end of the locking seat 1506 near the locking block 1505 adopts a bevel design. The advantage is that, through the design of the distribution groove 1504, the distribution tube can be placed in it according to the actual situation, which can play a limiting role. Furthermore, when using different distribution tubes, the design of the locking block 1505 and the locking groove 1507 facilitates quick replacement of the limiting frame 1503, thereby improving its practicality.

[0055] Specifically, the inner edge of the socket 1508 is provided with a positioning groove 1509 and a positioning groove 1510. A plug rod 1511, a plug block 1512, a limiting block 1513, and the fixing rod 1514 are sequentially fixedly installed at one end of the fixing rod 1514 near the socket 1508. The limiting block 1513 is compatible with the positioning groove 1509, and the plug block 1512 is compatible with the positioning groove 1510. The advantage is that the limiting block 1513 and the positioning groove 1509, as well as the plug block 1512 and the positioning groove 1510, provide a secure connection. With proper coordination, when installing the upper housing 1515 and the lower housing 1501, the insert rod 1511, insert block 1512, limit block 1513 and fixing rod 1514 can be inserted into the socket 1508. Then, the limit block 1513 abuts against the first positioning groove 1509, and the insert block 1512 abuts against the second positioning groove 1510. This allows for the rapid installation of the upper housing 1515 and the lower housing 1501. When installing the distribution pipe, it can be installed inside the pipe to protect it.

[0056] Example 3: Figure 2-16 As shown, this is an improvement on the previous embodiment.

[0057] Specifically, limiting plates 7 are fixedly installed at both ends of the infusion set 6 away from the center line of the external catheter 8. A connecting block 9 with a triangular cross-section is fixedly installed at the other end of the infusion set 6 away from the limiting plate 7. A limiting plate 2 10 adapted to the external catheter 8 is fixedly installed on one side of the connecting block 9. The advantage is that when connecting the infusion set 6 and the external catheter 8, the limiting plate 2 10 on the connecting block 9 is aligned with the external catheter 8, so that the external catheter 8 is inserted into the limiting plate 2 10. At the same time, the limiting plate 7 can limit and fix the infusion set 6, accurately connecting the infusion set 6 and the external catheter 8, ensuring the tightness of the connection and preventing liquid leakage. The triangular connecting block 9 can enhance the stability of the connection, so that the infusion set 6 and the external catheter 8 will not easily separate during use.

[0058] Specifically, the outer side of the distribution protection component 15 is provided with multiple connecting sleeves 14. The connecting sleeves 14 are adapted to the external conduit 8 and the external conduit 16. The lower housing 1501 and the upper housing 1515 are both provided with fixing grooves 1502. The fixing grooves 1502 are adapted to the connecting sleeves 14. The advantage is that, through the design of the connecting sleeves 14, the connecting sleeves 14 can be inserted into the fixing grooves 1502, which can not only protect the connection end between the external conduit 8 and the distribution protection component 15, but also play a positioning role, so as to prevent the external conduit 8 from being displaced, thus causing wear and affecting normal use.

[0059] Specifically, the infusion port 1 is fixedly installed with a connector 2 and silicone 3 at one end near the infusion set 6. The infusion set 6 is fixedly installed with a connector 17 at one end near the infusion port 1. An injection needle 18 adapted to the silicone 3 is inserted through one side of the connector 17. A puncture needle 19 adapted to the infusion port 1 is provided on one side of the infusion set 6. A tube lock 4 is provided at the end of the infusion port 1 away from the connector 2. An implantable catheter 5 is provided at the end of the infusion port 1 near the tube lock 4. The advantage is that when connecting the infusion port 1 and the infusion set 6, the injection needle 18 on the connector 17 is aligned with the silicone 3 and inserted, so that the connector 2 and the connector 17 fit tightly. During puncture, the puncture needle 19 is used to perform the puncture operation through the infusion port 1.

[0060] Working principle: During use, when installing the wing fixing assembly 11, the anti-slip sleeve 1104 is embedded into the mounting groove 1103 of the fixing sleeve 1101, and then the external conduit 8 is placed in the limiting groove 1102. The anti-slip sleeve 1104 increases the friction between the wing fixing assembly 11 and the external conduit 8, preventing the wing fixing assembly 11 from sliding on the external conduit 8, thereby improving the stability of the wing fixing assembly 11 and preventing displacement of the wing fixing assembly 11 at the external conduit 8, which would affect its normal use. When fixing the conduit, the wing plate 1106 is rotated and unfolded to 0° around the connecting rod 1105. Using the anti-slip texture 1107 on the wing plate 1106, medical tape or other fixing devices are used to stick or fix the wing plate 1106. Fixed to the patient's skin, the external catheter 8 can be prevented from shifting. When handling the infusion set 6 and the external catheter 8, the wing plate 1106 can be rotated 90° around the connecting rod 1105, making it easier for medical staff to handle one end of the infusion set 6. This increases its versatility and allows for adjustments based on different work situations. The anti-slip sleeve 1303 design allows the anti-slip sleeve 1303 to be inserted into both ends of the fixing sleeve 1301 after the marking and fixing component 13 has been moved to the appropriate position, increasing the contact area with the external catheter 8 and preventing the marking and fixing component 13 from moving at the external catheter 8. After the marking and fixing component 13 is connected, one side of the connecting plate 1305 can be secured to the collar of the medical staff or patient. The location can be selected according to the actual fixing position. Then, the female buckle 1308 of the split plate 1307 is inserted into the male buckle 1306, thus realizing the connection between the two. The cooperation between the male buckle 1306 and the female buckle 1308 facilitates quick disassembly and fixes the output end to prevent it from falling off and affecting normal use. The design of the distribution slot 1504 allows the distribution tube to be placed in it according to the actual situation, which can play a limiting role. When using different distribution tubes, the design of the locking block 1505 and the locking slot 1507 facilitates quick replacement of the limiting frame 1503, which can be done quickly and improves its practicality. The limiting block 1513, the positioning slot one 1509, the insertion block 1512, and the positioning slot two are all used to achieve this. With the cooperation of 1510, when installing the upper housing 1515 and the lower housing 1501, the insert rod 1511, insert block 1512, limiting block 1513, and fixing rod 1514 can be inserted into the socket 1508. Subsequently, the limiting block 1513 abuts against the positioning groove 1509, and the insert block 1512 abuts against the positioning groove 1510, thus enabling the rapid installation of the upper housing 1515 and the lower housing 1501. When installing the distribution tube, it can be installed inside, which can facilitate the protection of the internal distribution tube. When connecting the infusion set 6 to the external catheter 8, the limiting plate 10 on the connecting block 9 is aligned with the external catheter 8, so that the external catheter 8 is inserted into the limiting plate 10. At the same time, the limiting plate 7 can limit and fix the infusion set 6.The system accurately connects the infusion set 6 to the external catheter 8, ensuring a tight connection and preventing liquid leakage. The triangular connecting block 9 enhances the stability of the connection, preventing the infusion set 6 from easily separating from the external catheter 8 during use. The connecting sleeve 14 is designed to be inserted into the fixing groove 1502, protecting the connection end between the external catheter 8 and the dispensing protection component 15, and also providing positioning to prevent displacement of the external catheter 8, which could cause wear and affect normal use. When connecting the infusion port 1 to the infusion set 6, the injection needle 18 on the connecting port 17 is aligned with the silicone 3 and inserted, ensuring a tight fit between the connecting port 2 and the connecting port 17. During puncture, the puncture needle 19 is used to perform the puncture operation through the infusion port 1.

[0061] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An external catheter assembly for an implantable venous infusion port, comprising an infusion port (1) and an infusion set (6) connected to the infusion port (1), wherein the infusion set (6) is connected to a dispensing protection assembly (15) at the end away from the infusion port (1), characterized in that: The infusion port (1) is provided with an external conduit 1 (8) connected to the infusion set (6) at the other end. The external conduit 1 (8) is provided with an external conduit 2 (16) at the other end, and the two are interconnected. From left to right, the external conduit 1 (8) and the external conduit 2 (16) are provided with a wing fixing assembly (11), an identification fixing assembly (13) and a dispensing protection assembly (15). The flying wing fixing assembly (11) includes a fixing sleeve (1101), and a limiting groove (1102) adapted to the external conduit (8) is provided at one end of the fixing sleeve (1101) away from the center line. Connecting rods (1105) are fixedly installed on both sides of the fixing sleeve (1101) away from the external conduit (8). The flying wing plate (1106) is rotatably installed on the fixing sleeve (1101) through the connecting rods (1105). The marking fixing component (13) includes a fixing sleeve (1301), on one end of the fixing sleeve (1301) away from the center line, a marking plate (1304) is fixedly installed, and on the other end away from the marking plate (1304), a connecting plate (1305) is fixedly installed, and on the other end of the connecting plate (1305) away from the marking plate (1304), a splitting plate (1307) is snapped into place. The distribution protection component (15) includes a lower housing (1501), a limiting frame (1503), and an upper housing (1515). The lower housing (1501) and the upper housing (1515) have the same structure. A transparent frame (1516) is provided at the other end of the upper housing (1515) away from the lower housing (1501). A socket (1508) is fixedly installed at the end of the lower housing (1501) near the upper housing (1515). A fixing rod (1514) is fixedly installed at the end of the upper housing (1515) near the lower housing (1501). The socket (1508) and the fixing rod (1514) are plug-in installed. The fixed sleeve 2 (1301) extends from one side of the external conduit 2 (16) to the external conduit 1 (8) and has a limiting groove 2 (1302) through it. At both ends away from the center line of the limiting groove 2 (1302), anti-slip sleeve 2 (1303) adapted to the external conduit 1 (8) is fixedly installed. A male buckle (1306) is fixedly installed on one end of the connecting plate (1305) near the splitting plate (1307), and a female buckle (1308) is fixedly installed on one end of the splitting plate (1307) near the connecting plate (1305). The female buckle (1308) and the male buckle (1306) are connected by snap-fit. A Y-shaped distribution groove (1504) is opened at the outer edge of the limiting frame (1503). The two ends of the limiting frame (1503) away from the center line are fixedly installed with a card block (1505). A card seat (1506) is fixedly installed at the end of the lower shell (1501) near the card block (1505). A card groove (1507) is opened at the end of the card seat (1506) near the card block (1505). The card groove (1507) is adapted to the card block (1505). The end of the card seat (1506) near the card block (1505) is designed with a bevel. The socket (1508) has a positioning groove 1 (1509) and a positioning groove 2 (1510) on its inner edge. The fixing rod (1514) is fixedly installed with a plug rod (1511), a plug block (1512), a limiting block (1513) and a fixing rod (1514) in sequence at one end near the socket (1508). The limiting block (1513) is adapted to the positioning groove 1 (1509), and the plug block (1512) is adapted to the positioning groove 2 (1510). Limiting plates 1 (7) are fixedly installed at both ends of the infusion set (6) away from the center line of the external catheter 1 (8). A connecting block (9) with a "triangular" cross-section is fixedly installed at the other end of the infusion set (6) away from the limiting plate 1 (7). A limiting plate 2 (10) adapted to the external catheter 1 (8) is fixedly installed on one side of the connecting block (9).

2. The external catheter assembly for an implantable venous port according to claim 1, characterized in that: The fixed sleeve (1101) has multiple equally spaced mounting slots (1103) at one end near the limiting groove (1102). The fixed sleeve (1101) has an anti-slip sleeve (1104) that is compatible with the external conduit (8) fixedly installed through the mounting slots (1103).

3. The external catheter assembly for an implantable venous port according to claim 1, characterized in that: The wing plate (1106) has a rotation range of 0° to 90°. The upper and lower ends of the wing plate (1106) are provided with multiple anti-slip patterns (1107) that are evenly distributed and have a "long strip" cross-section. The wing plate (1106) and the connecting rod (1105) are provided with two identical patterns that are symmetrically distributed about the center line of the fixing sleeve (1101).

4. The external catheter assembly for an implantable venous port according to claim 1, characterized in that: The distribution protection component (15) is provided with a plurality of connecting sleeves (14) on the outside. The connecting sleeves (14) are adapted to the external conduit (8) and the external conduit (16). The lower shell (1501) and the upper shell (1515) are provided with fixing grooves (1502) at their outer edges. The fixing grooves (1502) are adapted to the connecting sleeves (14).

5. The external catheter assembly for an implantable venous port according to claim 1, characterized in that: The infusion port (1) is fixedly installed with a connector (2) and silicone (3) at one end near the infusion set (6). The infusion set (6) is fixedly installed with a connector (17) at one end near the infusion port (1). An injection needle (18) adapted to the silicone (3) is inserted through one side of the connector (17). A puncture needle (19) adapted to the infusion port (1) is provided on one side of the infusion set (6). A tube lock (4) is provided at one end of the infusion port (1) away from the connector (2). An implantable catheter (5) is provided at one end of the infusion port (1) near the tube lock (4).

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