Vascular intervention drug delivery device

Abstract

The utility model discloses a vascular intervention dosing device which comprises a catheter seat. The catheter is arranged at the top end of the catheter seat and penetrates through the inner hollow structure of the catheter seat; the puncture needle is arranged in the hollow catheter, the top end of the puncture needle protrudes out of the catheter, the needle base is installed at the top end of the puncture needle, and the needle base and the outer portion of the catheter base are mutually clamped; the system further comprises; and the extension arm is arranged on the outer wall of the catheter seat in an inclined structure. The utility model discloses a vascular intervention drug delivery device. The fixing mechanism is arranged, so that the extension tube which is not fixed by an adhesive tape can be stored, when the whole device is not used, the redundant extension tube can be stored, the normal hand operation of a patient is not influenced, and the situation that a catheter falls off due to contact between the extension tube and an external object is avoided; meanwhile, when administration is needed, the device can be easily pulled out of the interior of the fixing tube, normal administration work is carried out, and the device is more practical and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field related to vascular interventional treatment, in particular to a vascular interventional drug delivery device. Background Art

[0002] A drug delivery device for vascular intervention is a medical auxiliary device that delivers the drugs required for injection into the patient's blood vessels during treatment. Specifically, it generally consists of a puncture needle and a catheter. The puncture needle punctures the patient's skin, thereby driving the catheter inside the entire drug delivery device to move into the patient's blood vessels. After that, the puncture needle is pulled out, and the catheter and the catheter seat are fixed with external tape. The drug can then be delivered to the patient's blood vessels through the catheter to perform treatment on the patient.

[0003] In order to facilitate subsequent medical personnel to carry out drug administration, the drug administration devices currently on the market generally only fix the top part of the extension tube to the catheter seat with tape when fixing the extension tube. In order to facilitate subsequent medical personnel to take the extension tube and then inject the drug at the top of the extension tube, most areas of the extension tube are generally not in a fixed state. Therefore, when the entire device is not administering medicine, the long extension tube that is not fixed often affects the patient's hand work and may also come into contact with foreign objects, causing the catheter to separate from the patient's drug administration site, affecting the normal progress of subsequent drug administration. Utility Model Content

[0004] The purpose of the present utility model is to provide a vascular interventional drug delivery device to solve the problem raised in the above background technology that the drug delivery devices currently on the market generally only fix the top end of the extension tube to the catheter seat with tape when fixing the extension tube in order to facilitate subsequent medical personnel to perform drug delivery work. In order to facilitate subsequent medical personnel to take the extension tube and then perform drug injection work at the top end of the extension tube, most areas of the extension tube are generally not in a fixed state. Therefore, when the entire device is not delivering drugs, the longer extension tube that is not fixed often affects the patient's hand work and also comes into contact with foreign objects, causing the catheter to separate from the patient's drug delivery site, affecting the normal progress of subsequent drug delivery work.

[0005] To achieve the above-mentioned purpose, the present utility model provides the following technical solutions: a vascular interventional drug delivery device, comprising a catheter seat;

[0006] The catheter is disposed at the top end of the catheter adapter and penetrates the inner hollow structure of the catheter adapter; the puncture needle is disposed inside the hollow catheter and its top end protrudes outside the catheter, and is used to puncture the patient's skin;

[0007] A needle hub, which is mounted on the top of the puncture needle and engages with the outer portion of the catheter hub;

[0008] Also includes;

[0009] An extension arm is arranged on the outer wall of the catheter seat in an inclined structure, and an extension tube is provided at the top of the extension arm to connect with the infusion connector. The top of the infusion connector is clamped with an end cap, and the outside of the extension tube is also provided with a flow stop clamp and a fixing mechanism;

[0010] The flow-stop clamp is arranged on the outside of the extension tube at a position biased towards the extension arm, and the fixing mechanism is used to store the excess extension tube that is not fixed, so that when medication is not needed, the excess extension tube will not affect the patient's normal hand work, and the catheter will not be separated from the inside of the patient's blood vessel.

[0011] Preferably, the catheter seat is configured as a combined structure of a truncated cone and a cylindrical shape, the top end of the truncated cone and the catheter penetrate each other, and two protruding fixing rings are symmetrically provided on the outside of the cylindrical structure.

[0012] Preferably, the fixing mechanism includes a fixing tube, a friction block and a through groove. The fixing tube is arranged in a hollow cylindrical structure, and a friction block made of rubber is arranged on the top thereof for fixing the fixing tube in a suitable position on the extension tube.

[0013] Preferably, the friction block is arranged at a fan-shaped equal angle on the top of one side of the fixed tube, and the inner side thereof contacts and presses against the outer wall of the extension tube.

[0014] Preferably, a through groove is further provided in the middle of the outer wall of the fixing tube, and the through groove and the internal hollow structure of the fixing tube penetrate each other.

[0015] Preferably, the bottom of the inner wall of the fixed tube is also provided with limiting protrusions distributed at equal angles, and the limiting protrusions are also made of rubber material, which are used to limit the extension tube received in the fixed tube to prevent the extension tube from resetting and detaching from the fixed tube.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the vascular intervention drug delivery device;

[0017] 1. A fixing mechanism is provided to store the extension tube that is not fixed with tape, ensuring that when the entire device is not in use, the excess extension tube can be stored to ensure that it does not affect the patient's normal hand operation and does not come into contact with foreign objects, causing the catheter to fall off. At the same time, when medication is needed, it can be easily pulled out from the inside of the fixed tube to carry out normal medication work, which is more practical and convenient;

[0018] 2. Two fixing rings are provided on the outside of the catheter seat. Therefore, when the medical staff fixes the catheter seat with external tape, the tape in the middle of the two fixing rings is not in a state of adhesion with the outside of the catheter seat. Therefore, after the drug administration is completed, when the device needs to be disassembled, the tape in the middle of the two fixing rings can be directly cut with an external knife, and then the port of the tape can be easily found and the tape can be torn and disassembled, thereby avoiding the problem that the ports on both sides of the tape are tightly attached to the patient's skin and difficult to tear and disassemble normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the top view of the structure of the utility model;

[0021] Figure 3 This is a partial enlarged structural diagram of the connection between the extension tube and the fixing mechanism of the utility model;

[0022] Figure 4 This is a schematic diagram of a partially enlarged structure of the connection between the catheter seat and the extension arm of the utility model;

[0023] Figure 5 This is a half-section structural diagram of the connection between the extension tube and the fixing mechanism of the utility model;

[0024] Figure 6 This is a schematic diagram of a partially enlarged structure of the interior of the extension tube of the utility model.

[0025] In the figure: 1. catheter seat; 11. fixing ring; 2. catheter; 3. puncture needle; 4. extension arm; 5. needle seat; 6. flow stop clamp; 7. extension tube; 8. infusion connector; 9. end cap; 10. fixing mechanism; 101. fixing tube; 102. friction block; 103. through groove; 104. limiting protrusion. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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] See also Figure 1-6 , the utility model provides a technical solution: a vascular intervention drug delivery device, comprising a catheter seat 1;

[0028] The catheter 2 is disposed at the top of the catheter adapter 1 and penetrates the inner hollow structure of the catheter adapter 1;

[0029] The puncture needle 3 is arranged inside the hollow catheter 2, with its top end protruding from the outside of the catheter 2, and is used to puncture the patient's skin;

[0030] The needle hub 5 is mounted on the top of the puncture needle 3 and engages with the outer portion of the catheter hub 1;

[0031] Also includes;

[0032] An extension arm 4 is provided on the outer wall of the catheter hub 1 in an inclined structure, and an extension tube 7 is provided at the top of the extension arm 4 and connected to the infusion connector 8. The top of the infusion connector 8 is engaged with an end cap 9. The outside of the extension tube 7 is also provided with a flow stop clamp 6 and a fixing mechanism 10;

[0033] The flow-stop clamp 6 is provided on the outside of the extension tube 7, biased toward the extension arm 4. The fixing mechanism 10 is used to store any excess extension tube 7 that is not fixed properly. This ensures that when medication is not needed, the excess extension tube 7 does not interfere with the patient's normal hand work and prevents the catheter 2 from being separated from the patient's blood vessel.

[0034] The present application provides a vascular interventional drug delivery device with a fixing mechanism 10. Specifically, when using it, the operator first needs to take the needle seat 5 to drive the entire catheter seat 1, catheter 2 and the puncture needle 3 inside the catheter 2 to the patient's puncture position, and then control the puncture needle 3 to tilt 30 degrees with the patient's skin, and insert the puncture needle 3 into the patient's blood vessel. When blood returns to the inside of the puncture needle 3, the puncture needle 3 is tilted downward again so that it is tilted 15 degrees with the patient's skin, and the puncture needle 3 is controlled again to drive it downward. The catheter 2 reaches the patient's blood vessel. When the entire catheter 2 is completely inside the patient's blood vessel, the needle seat 5 is separated from the catheter seat 1 from the outside, so that the needle seat 5 drives the puncture needle 3 to be completely pulled out. After that, the catheter seat 1 and its external extension arm 4 and extension tube 7 are fixed with external tape. Finally, the end cap 9 is pulled off the top of the infusion connector 8. After the infusion connector 8 is disinfected, the injection head of the external injection device can be engaged with the infusion connector 8, thereby achieving the infusion medication work;

[0035] When the patient's infusion and medication work is completed and it is necessary to wait for a period of time before taking the medicine again, the excess extension tube 7 can be stored inside the fixing mechanism 10. In this way, the excess extension tube 7 and the infusion connector 8 will not fall near the patient's arm, affecting the patient's normal hand work. At the same time, there will be no serious contact between foreign objects and the excess extension tube 7, which will cause the subsequent catheter 2 to detach.

[0036] As a further preferred embodiment of the present invention, according to Figure 1-4 As shown, the catheter seat 1 is configured as a combined structure of a truncated cone and a cylinder, the top of the truncated cone and the catheter 2 penetrate each other, and two protruding fixing rings 11 are symmetrically provided on the outside of the cylindrical structure;

[0037] Specifically, the setting of the two fixing rings 11 allows the entire drug delivery device to be fixed with tape after it enters the patient's blood vessel. In order to facilitate subsequent disassembly, the port can be quickly found and torn off. It is only necessary to use external props to cut the tape between the two fixing rings 11, so that medical staff can quickly find the port of the tape at the cut position to remove the tape. The operation is very convenient, and there will be no problem of close contact between the tape and the catheter seat 1 and the patient's skin, which will make it inconvenient to find the port later.

[0038] Among them, the fixing mechanism 10 includes a fixing tube 101, a friction block 102 and a through groove 103. The fixing tube 101 is arranged in a hollow cylindrical structure, and a friction block 102 made of rubber is arranged on its top to fix the fixing tube 101 in a suitable position on the extension tube 7.

[0039] The friction block 102 is arranged at a fan-shaped top end on one side of the fixed tube 101 at equal angles, and the inner side of the friction block 102 contacts and presses against the outer wall of the extension tube 7 .

[0040] A through groove 103 is further provided in the middle of the outer wall of the fixing tube 101 , and the through groove 103 penetrates the inner hollow structure of the fixing tube 101 .

[0041] The inner wall bottom of the fixed tube 101 is also provided with limit bumps 104 distributed at equal angles. The limit bumps 104 are also made of rubber and are used to limit the extension tube 7 received in the fixed tube 101 to prevent the extension tube 7 from being reset and detached from the fixed tube 101.

[0042] Specifically, when the extension tube 7 needs to be stored in the fixed tube 101, the operator only needs to forcefully squeeze the extension tube 7 into the fixed tube 101, so that the extension tube 7 is compressed and folded inside the fixed tube 101. At the same time, the limiting protrusions 104 evenly distributed inside the fixed tube 101 can fix the position of the compressed and folded extension tube 7, thereby achieving the effect of storing the extension tube 7 inside the fixed tube 101.

[0043] In the present application, the diameter of the fixed tube 101 is greater than twice that of the extension tube 7. Therefore, when the extension tube 7 is squeezed inside the fixed tube 101, it will first be folded. When folded to a certain extent, it will protrude to the outside of the through groove 103 to complete the storage work. The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0044] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vascular intervention drug delivery device, comprising: Catheter seat (1); A catheter (2) is arranged at the top end of the catheter seat (1) and penetrates the inner hollow structure of the catheter seat (1); A puncture needle (3) is arranged inside the hollow catheter (2), with its top end protruding from the outside of the catheter (2), and is used to puncture the patient's skin; A needle seat (5) is mounted on the top end of the puncture needle (3) and is engaged with the outside of the catheter seat (1); Its characteristics are: Also includes; An extension arm (4) is arranged on the outer wall of the catheter seat (1) in an inclined structure, and an extension tube (7) is provided at the top end of the extension arm (4) and is connected to an infusion connector (8), an end cap (9) is engaged at the top end of the infusion connector (8), and a flow stop clamp (6) and a fixing mechanism (10) are also provided on the outside of the extension tube (7); The flow-stop clamp (6) is arranged on the outside of the extension tube (7) at a position biased toward the extension arm (4), and the fixing mechanism (10) is used to store the excess extension tube (7) that is not fixed, so that when medication is not needed, the excess extension tube (7) will not affect the patient's normal hand work, and the catheter (2) will not be separated from the inside of the patient's blood vessel.

2. The vascular intervention drug delivery device according to claim 1, characterized in that: The catheter seat (1) is configured as a combined structure of a truncated cone and a cylindrical shape, the top end of the truncated cone and the catheter (2) interpenetrate each other, and two protruding fixing rings (11) are symmetrically provided on the outside of the cylindrical structure.

3. The vascular intervention drug delivery device according to claim 1, characterized in that: The fixing mechanism (10) comprises a fixing tube (101), a friction block (102) and a through groove (103); the fixing tube (101) is arranged in a hollow cylindrical structure, and a friction block (102) made of rubber is arranged at the top thereof, for fixing the fixing tube (101) at a suitable position on the extension tube (7).

4. The vascular intervention drug delivery device according to claim 3, characterized in that: The friction block (102) is arranged at a fan-shaped equal angle on the top of one side of the fixed tube (101), and its inner side is in contact and squeezed with the outer wall of the extension tube (7).

5. The vascular intervention drug delivery device according to claim 3, characterized in that: A through groove (103) is also provided in the middle of the outer wall of the fixed tube (101), and the through groove (103) penetrates the internal hollow structure of the fixed tube (101).

6. The vascular intervention drug delivery device according to claim 1, characterized in that: The bottom of the inner wall of the fixed tube (101) is also provided with limiting protrusions (104) distributed at equal angles. The limiting protrusions (104) are also made of rubber and are used to limit the extension tube (7) received in the fixed tube (101) to prevent the extension tube (7) from resetting and detaching from the fixed tube (101).

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