Assembly for preventing infusion port conduit from falling off and moving

Abstract

The utility model discloses a component for preventing infusion port conduit from falling off and moving, which comprises an injection seat, a conduit and a connecting accessory, an injection cavity is arranged inside the injection seat, a silica gel diaphragm is arranged above the injection cavity, an infusion nozzle is arranged outside the injection seat to be communicated with the internal injection cavity, and the connecting accessory is connected with the injection cavity. The tail end of the catheter sequentially comprises a connecting part, a bending part and a positioning balloon, a limiting block is arranged on the infusion nozzle, the connecting accessory is arranged on the infusion nozzle in a sleeving mode, the connecting accessory is embedded with the limiting block in size at the position corresponding to the limiting block, the connecting part is arranged on the outer sides of the infusion nozzle and the connecting accessory in a sleeving mode, and the positioning balloon is arranged on the connecting part. And the connecting part is connected with the infusion nozzle and the connecting accessory in an embedded manner. A reliable connecting structure is additionally arranged at the joint of the tail end of the catheter and the injection seat, the catheter can be effectively prevented from falling off, meanwhile, the positioning balloon is arranged on the catheter, and in case that the catheter falls off, the catheter cannot flow away everywhere.

Description

Technical Field

[0001] The utility model relates to the technical field related to infusion ports, in particular to a component for preventing an infusion port catheter from falling off and wandering. Background Art

[0002] The infusion port is a closed infusion device that is completely implanted in the human body. It includes a catheter part with the tip located in the superior vena cava and an injection seat buried under the skin, which can be used for drug infusion. The tail end of the catheter of the infusion port is connected to the injection seat, but because the two are not an integrated structure, there have been clinical accidents where the tail end of the catheter is separated from the injection seat. The detached catheter will be squeezed by gravity and the patient's activities, causing the catheter to slip under the skin into the large blood vessels, or even into the heart, resulting in difficulty in removing the catheter, thrombosis, etc., and even life-threatening in severe cases (there have been clinical cases where the wandering catheter has pierced the pericardium). Utility Model Content

[0003] The utility model aims to provide a component for preventing an infusion port catheter from falling off and wandering, so as to solve the problem in the above background technology that the tail end of the catheter is separated from the injection seat, and the catheter after falling off may wander in the blood vessel and even cause blockage.

[0004] The utility model is implemented by the following technical scheme: a component for preventing an infusion port catheter from falling off and wandering, comprising an injection seat, a catheter and a connecting auxiliary part, an injection cavity is arranged inside the injection seat, a silicone diaphragm is arranged above the injection cavity, an infusion nozzle is arranged outside the injection seat to communicate with the internal injection cavity, the tail end of the catheter comprises three parts in sequence: a connecting part, a bending part and a positioning balloon, a limiting block is arranged on the infusion nozzle, the connecting auxiliary part is sleeved on the infusion nozzle, and the connecting auxiliary part is fitted with the limiting block at the corresponding position of the limiting block, the connecting part is sleeved on the outside of the infusion nozzle and the connecting auxiliary part, and the connecting part is fitted and connected with the infusion nozzle and the connecting auxiliary part.

[0005] As a further solution of the utility model: the limit block is in the shape of a truncated cone, and the diameter of the end face of the limit block facing the injection seat is smaller than the diameter of the end face facing the catheter.

[0006] As a further solution of the utility model: the overall shape of the connecting auxiliary part is a stepped frustum, and the side of the connecting auxiliary part with a smaller diameter is sleeved on the infusion nozzle, and the other side with a larger diameter is sleeved on the limit block, and at the same time, the inner surface of the connecting auxiliary part is tightly fitted with the infusion nozzle and the limit block.

[0007] As a further solution of the utility model: the portion inside the connecting part connected to the infusion nozzle and the connecting auxiliary piece is in the shape of a stepped groove, and the portion connected to the infusion nozzle has the smallest diameter.

[0008] As a further solution of the utility model: the tail end of the catheter is fitted with the outer side surface of the injection seat.

[0009] As a further solution of the utility model: the infusion nozzle and the injection seat are an integrated structure.

[0010] As a further solution of the utility model: the bending portion is arranged in a corrugated shape.

[0011] As a further solution of the utility model: the connecting part and the connecting auxiliary parts are made of elastic silicone material.

[0012] The utility model has the advantages that a reliable connection structure is added to the connection between the tail end of the catheter and the injection seat, which can effectively prevent the catheter from falling off. At the same time, a positioning balloon is arranged on the catheter, so that in case the catheter falls off, it will not flow everywhere. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0016] Figure 3 It is a partial structural schematic diagram of the utility model.

[0017] In the figure, 1. injection seat; 11. injection cavity; 111. silicone diaphragm; 12. infusion nozzle; 121. limit block; 2. catheter; 21. connecting part; 22. bending part; 23. positioning balloon; 3. connecting accessories. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 3In an embodiment of the utility model, a component for preventing an infusion port catheter from falling off and wandering comprises an injection seat 1, a catheter 2 and a connecting auxiliary component 3. An injection cavity 11 is arranged inside the injection seat 1, and a silicone diaphragm 111 is arranged above the injection cavity 11. An infusion nozzle 12 is arranged outside the injection seat 1 to communicate with the internal injection cavity 11. The tail end of the catheter 2 comprises three parts, a connecting portion 21, a bending portion 22 and a positioning balloon 23 in sequence. A limiting block 121 is arranged on the infusion nozzle 12. The connecting auxiliary component 3 is sleeved on the infusion nozzle 12, and the connecting auxiliary component 3 is fitted with the limiting block 121 at a corresponding position of the limiting block 121. The connecting portion 21 is sleeved on the outside of the infusion nozzle 12 and the connecting auxiliary component 3, and the connecting portion 21 is fitted with the infusion nozzle 12 and the connecting auxiliary component 3.

[0020] When the utility model is used, the injection seat 1 is implanted subcutaneously, and the tail end connection part 21, the bending part 22 and the positioning balloon 23 of the catheter 2 are also implanted subcutaneously. The head end of the catheter 2 is guided by a guide wire, passes through the subcutaneous tissue and muscles, and pierces the large blood vessels, and the head end is free in the large blood vessels. Since the diameter of the positioning balloon 23 is larger than that of the catheter 2, even if the catheter 2 is separated from the injection seat 1, it can prevent the catheter from entering the blood vessel from the subcutaneous tissue and muscles. The positioning balloon 23 is stuck outside the blood vessel, which can fix the catheter 2 and prevent the catheter 2 from sliding into the blood vessel completely, so as to avoid serious consequences such as difficulty in removal, thrombosis, and even puncturing the pericardium.

[0021] The stopper 121 is in the shape of a truncated cone, and the diameter of the end face of the stopper 121 facing the injection seat 1 is smaller than the diameter of the end face facing the catheter 2. The overall shape of the connecting auxiliary 3 is in the shape of a stepped truncated cone, and the side of the connecting auxiliary 3 with a smaller diameter is sleeved on the infusion nozzle 12, and the other side with a larger diameter is sleeved on the stopper 121, and the inner surface of the connecting auxiliary 3 is tightly fitted with the infusion nozzle 12 and the stopper 121. The part of the connecting portion 21 that is connected to the infusion nozzle 12 and the connecting auxiliary 3 is in the shape of a stepped groove, and the part connected to the infusion nozzle 12 has the smallest diameter.

[0022] The connecting part 21 and the connecting auxiliary part 3 are made of elastic silicone material. Since the catheter 2 is soft, it cannot directly penetrate the tissue and pierce the large blood vessels. It needs to be guided by a guide wire. The guide wire is strung on the catheter 2 (at this time, the catheter 2 and the injection seat 1 are separated). The guide wire guides the catheter 2 to pass through the subcutaneous tissue and muscle and pierce the large blood vessels. Then the guide wire is pulled out and the catheter 2 is assembled with the injection seat 1. The traditional connection method between the injection seat 1 and the catheter 2 is not reliable enough, and there is a risk of accidental detachment of the catheter 2. During assembly, the present application uses the elasticity of the connecting part 21 and the connecting auxiliary part 3. During installation, the connecting auxiliary part 3 is first opened and put on the infusion nozzle 12, and then the connecting part 21 is installed.

[0023] The connecting auxiliary part 3 is sandwiched between the infusion nozzle 12 and the connecting part 21, and because the connecting auxiliary part 3 is in the shape of a stepped truncated cone, it not only allows the infusion nozzle 12 to be tightly connected to the connecting part 21, but also allows the connecting part 21 to move toward the direction of the catheter 2 even if there is tension between the catheter 2 and the injection seat 1 (the tension on the catheter 2 comes from the pulling caused by human body movement, blood flow and gravity), but because the diameter inside the connecting part 21 is gradually reduced, the corresponding connecting auxiliary part 3 and the infusion nozzle 12 that are engaged with the connecting part 21 are gradually increased in diameter. Therefore, the more they are pulled, the tighter the connection between the connecting part 21 and the infusion nozzle 12 will be, because the more they are pulled, the larger part of the outer diameter of the infusion nozzle 12 will squeeze toward the part where the inner diameter of the connecting part 21 is gradually reduced, causing the two to become more and more tightly stuck. This design can effectively prevent the catheter 2 from falling off. In addition, the tail end of the catheter 2 fits with the outer side of the injection seat 1, and the tail end of the catheter 2 is stuck by the surface of the injection seat 1, which can prevent the catheter 2 from moving toward the injection seat 1.

[0024] The infusion nozzle 12 and the injection seat 1 are an integrated structure, and the bending portion 22 is arranged in a corrugated shape. The catheter 2 will swing with human activities, blood flow and gravity, while the injection seat 1 is fixed, which will cause the catheter 2 to be repeatedly bent at the connection with the injection seat 1. This is also one of the reasons why the ordinary infusion port catheter will be detached, because the ordinary infusion port catheter will cause the connection between the catheter and the injection seat to become loose if the number of bending times is too many. The bending portion 22 of the utility model is arranged to meet the requirement that the catheter 2 can be bent repeatedly. When the catheter 2 is bent or folded, the corrugated bending portion 22 can change its own shape as the catheter 2 bends, so that the connection portion 21 that is actually connected to the injection seat 1 will not be affected, thereby avoiding the catheter 2 from falling off due to long-term bending.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A component for preventing an infusion port catheter from falling off and wandering, comprising an injection seat (1), a catheter (2) and a connecting auxiliary component (3), characterized in that: An injection cavity (11) is arranged inside the injection seat (1), and a silicone diaphragm (111) is arranged above the injection cavity (11). An infusion nozzle (12) is arranged outside the injection seat (1) to communicate with the internal injection cavity (11). The tail end of the catheter (2) comprises three parts, namely a connecting portion (21), a bending portion (22) and a positioning balloon (23). A limiting block (121) is arranged on the infusion nozzle (12). The connecting auxiliary component (3) is sleeved on the infusion nozzle (12), and the connecting auxiliary component (3) is fitted with the limiting block (121) at a position corresponding to the limiting block (121). The connecting portion (21) is sleeved on the outside of the infusion nozzle (12) and the connecting auxiliary component (3), and the connecting portion (21) is fitted with the infusion nozzle (12) and the connecting auxiliary component (3).

2. The component for preventing the infusion port catheter from falling off and wandering according to claim 1, characterized in that: The limiting block (121) is in the shape of a truncated cone, and the diameter of the end surface of the limiting block (121) facing the injection seat (1) is smaller than the diameter of the end surface facing the catheter (2).

3. The component for preventing the infusion port catheter from falling off and wandering according to claim 1, characterized in that: The overall shape of the connecting auxiliary component (3) is a stepped frustum, and the side of the connecting auxiliary component (3) with a smaller diameter is sleeved on the infusion nozzle (12), while the other side with a larger diameter is sleeved on the limit block (121), and the inner surface of the connecting auxiliary component (3) is tightly fitted to the infusion nozzle (12) and the limit block (121).

4. The component for preventing the infusion port catheter from falling off and wandering according to claim 3, characterized in that: The portion of the connecting part (21) that is connected to the infusion nozzle (12) and the connecting auxiliary component (3) is in the shape of a stepped groove, and the portion that is connected to the infusion nozzle (12) has the smallest diameter.

5. The component for preventing the infusion port catheter from falling off and wandering according to claim 4, characterized in that: The tail end of the catheter (2) is in contact with the outer side surface of the injection seat (1).

6. The component for preventing the infusion port catheter from falling off and wandering according to claim 1, characterized in that: The infusion nozzle (12) and the injection seat (1) are an integrated structure.

7. The component for preventing the infusion port catheter from falling off and wandering according to claim 1, characterized in that: The bent portion (22) is configured in a corrugated shape.

8. The component for preventing an infusion port catheter from falling off and wandering according to claim 1, characterized in that: The connecting portion (21) and the connecting auxiliary component (3) are made of elastic silicone material.

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