High-strength bending-resistant PICC (Peripherally Inserted Central Catheter)

Abstract

The utility model discloses a high-strength bending-resistant PICC (Peripherally Inserted Central Catheter) and belongs to the technical field of medical instruments. A high-strength bending-resistant PICC catheter comprises a catheter body, a plurality of connecting mechanisms are arranged on the catheter body, each connecting mechanism comprises a bandage connected with the catheter body, an inserting rod and an inserting seat, the inserting rod and the inserting seat are arranged at the two ends of the bandage, an inserting assembly is arranged on the inserting rod, a plurality of inserting holes matched with the inserting assembly are formed in the inserting seat, and the inserting seat is connected with the inserting seat. A connecting part connected with the tube body is arranged on the bandage; the insertion rod and the insertion seat are connected through the insertion assembly, so that the tube body is stably bound on the arm, the tube body is effectively prevented from being separated, the fixing effect is good, a positioning adhesive tape does not need to be pasted on the skin of a patient, skin allergy of the patient can be effectively avoided, and discomfort of the patient can also be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a high-strength anti-bending PICC catheter. Background Art

[0002] PICC is a "peripherally inserted central venous catheter". The tip of the catheter is located in the central vein, providing convenience for patients' medium- and long-term intravenous infusion treatment. PICC is a slender and soft intravenous infusion catheter made of silicone or polyurethane. Its good tissue compatibility allows patients to carry it without discomfort. It can be retained for 7 days to a year and needs to be maintained once a week during the retention period. PICC can not only reduce the pain caused by repeated venous punctures, but more importantly, it can avoid the damage to peripheral veins and local tissue stimulation caused by irritating drugs such as chemotherapy drugs and intravenous high-nutrient solutions, and increase patients' confidence in treating diseases.

[0003] In the prior art, a Chinese patent with application number CN202123046725.9 discloses a PICC catheter, which connects the first rope body and the second rope body at one end away from the connecting sleeve through a connecting mechanism, but it only clamps and fixes the insertion rod by an elastic sheet without locking it, resulting in poor fixing effect. The connecting tube is easily separated from the insertion rod, causing the catheter to detach. Utility Model Content

[0004] The utility model aims to solve the problems existing in the prior art and proposes a high-strength anti-bending PICC catheter.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A high-strength, anti-bending PICC catheter comprises a tube body, on which a plurality of connecting mechanisms are arranged, each of which comprises a binding band connected to the tube body and a plug rod and a socket arranged at both ends of the binding band, the plug rod is provided with a plug assembly, the socket is provided with a plurality of jacks matched with the plug assembly, and the binding band is provided with a connecting portion connected to the tube body.

[0007] Preferably, the plug-in assembly includes a movable groove formed on the plug rod, a positioning rod is slidably connected in the movable groove, a first elastic element is arranged between the positioning rod and the inner wall of the movable groove, an extrusion slope that is movably opposed to the socket is formed at one end of the positioning rod away from the first elastic element, and the positioning rod is movably connected in the socket.

[0008] Preferably, the end of the insertion rod away from the binding band is an insertion end, and the end surface of the insertion end is configured as a conical arc surface.

[0009] Preferably, a locking rod is slidably connected in the socket, a locking hole matching the locking rod is opened on the positioning rod, one end of the locking rod away from the positioning rod passes through the socket and is connected to a limiting plate, a second elastic element is sleeved on the outer side of the locking rod, and both ends of the second elastic element are respectively connected to the socket and the limiting plate.

[0010] Preferably, the connecting portion comprises a mounting plate fixed on the binding strap, the mounting plate is provided with an elastic arc-shaped clamping plate, and a toggle plate is provided at one end of the arc-shaped clamping plate away from the mounting plate.

[0011] Preferably, the inner diameter of the arc-shaped clamping plate is smaller than the diameter of the tube body, and the inner side wall of the arc-shaped clamping plate is provided with a plurality of limit strips that movably abut against the outer side wall of the tube body.

[0012] Preferably, the tube body is made of a highly tear-resistant silicone tube.

[0013] Compared with the prior art, the utility model provides a high-strength anti-bending PICC catheter, which has the following beneficial effects:

[0014] 1. The high-strength, anti-bending PICC catheter connects the plug rod and the socket through a plug-in assembly, so that the tube body is stably tied to the arm, effectively preventing the tube body from detaching, with a good fixing effect, preventing the PICC catheter from shifting during use.

[0015] 2. This high-strength, anti-bending PICC catheter can effectively prevent skin allergies and discomfort in patients by using a strap instead of a positioning tape to fix the tube on the arm.

[0016] 3. The high-strength anti-bending PICC catheter has a locking rod on the socket to limit the positioning rod, thereby avoiding accidental touching of the positioning rod, which would cause the arm binding with the bandage to fail, and improving the fixing effect of the tube body.

[0017] 4. The high-strength, anti-bending PICC catheter has a limit bar set inside the arc-shaped card plate to abut against the tube body, so that the tube body is squeezed by the limit bar to form an annular groove, which effectively prevents the tube body from slipping off the arc-shaped card plate and further improves the fixing effect of the tube body.

[0018] 5. The high-strength and anti-bending PICC catheter adopts a high-tear-resistant silicone tube in the tube body to improve the strength and tear resistance of silicone rubber. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 It is a structural schematic diagram of the connection mechanism of the utility model;

[0021] Figure 3It is a cross-sectional structural diagram of the plug rod and the socket of the utility model;

[0022] Figure 4 For the utility model Figure 3 A partial enlarged structural diagram of the middle part;

[0023] Figure 5 It is a structural schematic diagram of the connecting part of the utility model.

[0024] In the figure: 1. tube body; 2. binding strap; 3. insertion rod; 301. movable groove; 302. positioning rod; 3021. extrusion slope; 3022. locking hole; 303. conical arc surface; 304. first elastic element; 4. socket; 401. plug hole; 402. locking rod; 403. limit plate; 404. second elastic element; 5. connecting part; 501. mounting plate; 502. arc clamping plate; 5021. limit strip; 503. toggle plate. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "sleeved / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two components; for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example: Refer to Figure 1 and Figure 2A high-strength and anti-bending PICC catheter comprises a tube body 1, on which a plurality of connecting mechanisms are arranged, each of which comprises a bandage 2 connected to the tube body 1 and an insertion rod 3 and a socket 4 arranged at both ends of the bandage 2, the insertion rod 3 is provided with a plug assembly, the socket 4 is provided with a plurality of jacks 401 matched with the plug assembly, and the bandage 2 is provided with a connecting portion 5 connected to the tube body 1.

[0029] Specifically, the connecting part 5 is used to connect the tube body 1 and the connecting mechanism. After the medical staff successfully punctures the patient, the bandage 2 is used to bind and wrap the patient's arm, and then the insertion rod 3 and the socket 4 at both ends of the bandage 2 are connected. The insertion rod 3 and the socket 4 are connected through the plug-in assembly, so that the tube body 1 is stably bound to the arm, which effectively prevents the tube body 1 from detaching and has a good fixing effect. By using the bandage 2 instead of the positioning tape to fix the tube body 1 on the arm, the patient's skin allergies can be effectively avoided, and the patient can also be prevented from feeling uncomfortable.

[0030] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 As a preferred technical solution of the utility model, the plug-in assembly includes a movable groove 301 opened on the plug rod 3, a positioning rod 302 is slidably connected in the movable groove 301, a first elastic element 304 is arranged between the positioning rod 302 and the inner wall of the movable groove 301, and an extrusion slope 3021 that is movably opposed to the socket 4 is opened at one end of the positioning rod 302 away from the first elastic element 304, and the positioning rod 302 is movably connected in the socket 401.

[0031] Specifically, when the plug-in assembly is working, the insertion rod 3 is inserted into the socket 4. When the insertion rod 3 is inserted into the socket 4, the extrusion inclined surface 3021 is subjected to force, and the positioning rod 302 shrinks into the movable groove 301, according to the thickness of the patient's arm, until the insertion rod 3 can no longer go deeper into the socket 4. At this time, the strap 2 fits the patient's arm, and the positioning rod 302 on the insertion rod 3 is aligned and matched with the socket 401. The positioning rod 302 enters the socket 401 under the elastic force of the first elastic element 304, completing the connection and locking of the insertion rod 3 and the socket 4, so that the tube body 1 is stably bound to the arm, effectively preventing the tube body 1 from detaching, and the fixing effect is good; when it is necessary to release the connection between the insertion rod 3 and the socket 4, the positioning rod 302 is pressed down to move the positioning rod 302 downward from the socket 401, and the restriction of the positioning rod 302 on the movement of the insertion rod 3 and the socket 4 is released.

[0032] Reference Figure 2 and Figure 3 As a preferred technical solution of the present invention, the end of the insertion rod 3 away from the binding belt 2 is an insertion end, and the end face of the insertion end is set as a conical arc surface 303.

[0033] Specifically, the end surface of the insertion end of the plug rod 3 is set as a conical arc surface 303, so that the diameter of the insertion end is much smaller than the insertion opening of the socket 4, which facilitates the rapid insertion of the plug rod 3 and the socket 4 and improves the installation speed of the plug rod 3 and the socket 4.

[0034] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 As a preferred technical solution of the utility model, a locking rod 402 is slidably connected in the socket 4, and a locking hole 3022 matching the locking rod 402 is opened on the positioning rod 302. The end of the locking rod 402 away from the positioning rod 302 passes through the socket 4 and is connected to the limiting plate 403. A second elastic element 404 is sleeved on the outside of the locking rod 402, and the two ends of the second elastic element 404 are respectively connected to the socket 4 and the limiting plate 403.

[0035] Specifically, before the plug assembly works, that is, before the plug rod 3 is connected to the socket 4, the limit plate 403 is pulled to drive the locking rod 402 to slide to the outside of the socket 4 to avoid affecting the subsequent insertion of the plug rod 3 into the socket 4. Then, the plug rod 3 is pushed into the socket 4. During this process, the extrusion slope 3021 of the positioning rod 302 is forced to avoid the inner wall of the socket 4 until the strap 2 fits with the arm and the plug rod 3 cannot continue to be inserted into the socket 4. At this time, the positioning rod 302 on the plug rod 3 is in the first elastic element 3 04 is inserted into the socket 401 aligned therewith, the insertion rod 3 and the socket 4 are initially locked, and then the limiting plate 403 is released, so that the locking rod 402 is reset under the elastic pull of the second elastic element 404, and the end of the locking rod 402 away from the limiting plate 403 is inserted into the locking hole 3022 of the positioning rod 302, to avoid accidental contact with the positioning rod 302, causing the positioning rod 302 to detach from the socket 401, making the strap 2 ineffective in binding the arm, thereby improving the fixing and anti-falling effect of the tube body 1.

[0036] Reference Figure 1 , Figure 2 and Figure 5 As a preferred technical solution of the utility model, the connecting part 5 includes a mounting plate 501 fixed on the strap 2, and an elastic arc-shaped clamping plate 502 is arranged on the mounting plate 501, and a toggle plate 503 is arranged at one end of the arc-shaped clamping plate 502 away from the mounting plate 501.

[0037] Specifically, when the connecting mechanism is connected to the tube body 1, the arc-shaped clamping plate 502 is twisted around the end connected to the mounting plate 501 by toggling the toggle plate 503, and the opening between the arc-shaped clamping plate 502 and the mounting plate 501 becomes larger, thereby facilitating the placement of the tube body 1 between the mounting plate 501 and the arc-shaped clamping plate 502, thereby achieving the connection between the tube body 1 and the connecting mechanism.

[0038] Reference Figure 1 , Figure 2 and Figure 5 As a preferred technical solution of the present invention, the inner diameter of the arc-shaped clamping plate 502 is smaller than the diameter of the tube body 1 , and the inner wall of the arc-shaped clamping plate 502 is provided with a plurality of limit strips 5021 that are movably opposed to the outer wall of the tube body 1 .

[0039] Specifically, by making the inner diameter of the arc-shaped clamping plate 502 smaller than the diameter of the tube body 1, the arc-shaped clamping plate 502 is convenient for effectively clamping and positioning the tube body 1, and a plurality of limiting strips 5021 are arranged on the inner side of the arc-shaped clamping plate 502, so that an annular groove is formed on the outer wall of the tube body 1 after being squeezed by the limiting strips 5021, thereby effectively preventing the tube body 1 from slipping off the arc-shaped clamping plate 502, thereby further improving the fixing effect of the tube body 1.

[0040] Reference Figure 1 As a preferred technical solution of the present utility model, the tube body 1 adopts a high tear-resistant silicone tube.

[0041] Specifically, high-tear-resistant silicone is made by gradually adding fumed silica and other auxiliary materials to raw rubber. Compared with the precipitated silica used in ordinary mixed silicone rubber, fumed silica has higher fineness and better strength during mixing and molding. The strength and tear resistance of the tube body are better.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-strength, anti-bending PICC catheter, comprising a tube body (1), characterized in that: The tube body (1) is provided with a plurality of groups of connection mechanisms, each group of the connection mechanisms comprises a binding strap (2) connected to the tube body (1) and an insertion rod (3) and a socket (4) arranged at both ends of the binding strap (2); the insertion rod (3) is provided with a plug-in assembly, the socket (4) is provided with a plurality of jacks (401) matched with the plug-in assembly, and the binding strap (2) is provided with a connection portion (5) connected to the tube body (1).

2. A high-strength anti-bending PICC catheter according to claim 1, characterized in that: The plug-in assembly comprises a movable groove (301) formed on the plug rod (3), a positioning rod (302) being slidably connected in the movable groove (301), a first elastic element (304) being arranged between the positioning rod (302) and the inner wall of the movable groove (301), an extrusion inclined surface (3021) being arranged at one end of the positioning rod (302) away from the first elastic element (304) and being movably opposed to the socket (4), and the positioning rod (302) being movably connected in the plug hole (401).

3. A high-strength anti-bending PICC catheter according to claim 2, characterized in that: The end of the insertion rod (3) away from the binding belt (2) is an insertion end, and the end surface of the insertion end is configured as a conical arc surface (303).

4. A high-strength anti-bending PICC catheter according to claim 2, characterized in that: A locking rod (402) is slidably connected inside the socket (4); a locking hole (3022) matching the locking rod (402) is provided on the positioning rod (302); one end of the locking rod (402) away from the positioning rod (302) passes through the socket (4) and is connected to the limiting plate (403); a second elastic element (404) is sleeved on the outer side of the locking rod (402); two ends of the second elastic element (404) are respectively connected to the socket (4) and the limiting plate (403).

5. A high-strength anti-bending PICC catheter according to claim 4, characterized in that: The connecting portion (5) comprises a mounting plate (501) fixed on the binding belt (2), the mounting plate (501) being provided with an elastic arc-shaped clamping plate (502), and a toggle plate (503) being provided at one end of the arc-shaped clamping plate (502) away from the mounting plate (501).

6. A high-strength anti-bending PICC catheter according to claim 5, characterized in that: The inner diameter of the arc-shaped clamping plate (502) is smaller than the diameter of the tube body (1), and the inner side wall of the arc-shaped clamping plate (502) is provided with a plurality of limit strips (5021) that movably abut against the outer side wall of the tube body (1).

7. A high-strength anti-bending PICC catheter according to claim 6, characterized in that: The tube body (1) is made of a highly tear-resistant silicone tube.

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