A chest wall segment axillary vein implanted PICC catheter fixator

Abstract

The present application belongs to the technical field of PICC catheter fixing, and particularly relates to a thoracic wall segment axillary vein implanted PICC catheter fixing device, which comprises a catheter stabilizing assembly, a dressing rolling and sticking assembly, a triangular frame, a pre-tension pulling assembly, a puncture catheter and a closed upper cover. The catheter stabilizing assembly is annularly and uniformly arranged in the interior of the triangular frame. The dressing rolling and sticking assembly is arranged in the interior of the triangular frame. The pre-tension pulling assembly is arranged at the bottom of the triangular frame. The closed upper cover is arranged at the top of the triangular frame. The puncture catheter is arranged in the catheter stabilizing assembly. The present application aims to solve the problems of unstable fixing, easy displacement of the catheter and inconvenience in replacing the dressing in the prior art.

Description

Technical Field

[0001] This invention belongs to the field of PICC catheter fixation technology, specifically referring to a PICC catheter fixation device that allows insertion of a PICC catheter via the axillary vein in the chest wall segment. Background Technology

[0002] Peripherally inserted central catheter (PICC) placement via the axillary vein through the chest wall is an important venous access technique that has developed in recent years, especially suitable for patients with poor peripheral venous access. However, the clinical application of this technique faces the following challenges: Fixation difficulties: The skin in the chest wall and axillary region has a large degree of mobility and complex curvature, making it difficult for traditional fixation devices to fit stably; Catheter displacement: Respiratory movements and upper limb activities cause skin displacement, directly pulling on the catheter; Infection risk: Frequent dressing changes require moving the catheter, increasing the chance of irritation and infection at the puncture site.

[0003] Therefore, there is an urgent need for a fixation device specifically designed for PICC catheters inserted through the axillary vein in the chest wall segment to solve the aforementioned technical problems. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, the present invention provides a PICC catheter fixation device for insertion through the axillary vein in the chest wall segment, which aims to solve the problems of unstable fixation, easy displacement of the catheter, and inconvenience of changing dressings in the prior art.

[0005] The technical solution adopted by this invention is as follows: This invention proposes a PICC catheter fixation device for transthoracic axillary vein insertion, including a catheter stabilization component, a dressing roll-on component, a triangular frame, a pretension traction component, a puncture catheter, and a sealing cap. The catheter stabilization component is evenly distributed in a ring inside the triangular frame, the dressing roll-on component is located inside the triangular frame, the pretension traction component is located at the bottom of the triangular frame, the sealing cap is located at the top of the triangular frame, and the puncture catheter is located in the catheter stabilization component.

[0006] Furthermore, the catheter stabilization assembly includes a stabilizing cannula, a stabilizing rope, and a pre-tensioning spring. The puncture catheter is disposed in the stabilizing cannula, and the stabilizing rope is evenly distributed in a ring around the stabilizing cannula. The pre-tensioning spring is disposed between the inner wall of the triangular frame and the stabilizing rope, and the stabilizing cannula is located in the middle of the triangular frame.

[0007] By using the pre-tensioning spring for buffering and energy absorption, the movement of the puncture catheter relative to the skin can be reduced when the triangular frame deforms due to skin traction, thereby achieving the technical objective of increasing the stability of the puncture catheter.

[0008] Furthermore, the dressing roll assembly includes a roll support and a roll cylinder. The roll support is fixed to a triangular frame and has a horizontal groove and a vertical groove. The roll cylinder has a roller portion, which can rotate and slide in the horizontal groove and the vertical groove.

[0009] Preferably, the roller has a notch in the middle, the dressing is wound on the roller, and the two ends of the roller have beveled portions that match the triangular frame.

[0010] During the dressing application process, the notch prevents the roller from squeezing the puncture catheter, thus avoiding catheter displacement caused by the dressing application.

[0011] During the process of tearing off the dressing, the guide of the transverse groove ensures that the direction of the pulling force is close to parallel to the skin, thereby avoiding significant lifting or deformation of the skin and reducing the difficulty of tearing off the dressing.

[0012] The roller can only be inserted into the longitudinal groove when the notch is in contact with the triangular frame. This ensures that the roller is inserted into the longitudinal groove at approximately the correct angle, and that there is still a certain amount of clearance between the notch and the triangular frame.

[0013] Furthermore, the pre-tensioning assembly includes a silicone foot pad and a foam plug, which are located at the bottom of the triangular frame. The silicone foot pad is located at the corner of the triangular frame, and the foam plug is located at the edge of the triangular frame.

[0014] Preferably, the silicone foot pad has a bias extension, which is located on one side close to the inside of the triangular frame.

[0015] When the human body is active, the skin is stretched. At this time, the bias extension is offset outward. The deformation compensation of the silicone foot pad can reduce the deformation of the triangular frame, thereby further improving the stability of the catheter stabilization component.

[0016] As a further preferred embodiment of the present invention, the silicone foot pads and foam plugs are fixed to human skin with medical adhesive.

[0017] Furthermore, the puncture catheter consists of a puncture section and a connector section. After the puncture section is inserted into the human body, the puncture point between the puncture section and the skin is covered by a dressing. The connector section is located in a stabilizing cannula.

[0018] Furthermore, the closed top cover can be opened and is located above the triangular frame.

[0019] The triangular frame is made of elastic material, and a positioning pin is provided between the closed top cover and the triangular frame.

[0020] The beneficial effects achieved by the present invention using the above structure are as follows: (1) By using the buffer and energy absorption of the pre-tightening spring, the movement of the puncture catheter relative to the skin can be reduced when the triangular frame is deformed due to skin traction, thereby achieving the technical objective of increasing the stability of the puncture catheter.

[0021] (2) During the application of the dressing, the notch can prevent the roller from squeezing the puncture catheter, thus avoiding catheter displacement caused by the application of the dressing.

[0022] (3) During the process of tearing the dressing, the guide of the transverse groove can make the direction of the pulling force close to the skin, thereby avoiding large-scale lifting or deformation of the skin and reducing the difficulty of tearing the dressing.

[0023] (4) The roller can only be placed into the longitudinal groove when the notch is in contact with the triangular frame, so as to ensure that the angle of the roller when it is placed into the longitudinal groove is roughly correct, and there is still a certain gap between the notch and the triangular frame.

[0024] (5) When the human body is active, the skin will be stretched. At this time, the bias extension will shift outward. The deformation compensation of the silicone foot pad can reduce the deformation of the triangular frame, thereby further improving the stability of the catheter stabilization component. Attached Figure Description

[0025] Figure 1 This is a perspective view of a PICC catheter fixation device inserted through the axillary vein in the chest wall segment according to the present invention; Figure 2 This is a front view of a PICC catheter fixation device inserted through the axillary vein in the chest wall, as proposed in this invention. Figure 3 for Figure 2 A cross-sectional view along section line AA; Figure 4 for Figure 2 A cross-sectional view along the cutting line BB; Figure 5 This is an exploded structural diagram of a PICC catheter fixation device inserted through the axillary vein in the chest wall segment, as proposed in this invention. Figure 6 for Figure 3 A magnified view of a section at point I; Figure 7 for Figure 4 Enlarged view of a section at point II; Figure 8 for Figure 5 A magnified view of a section at point III.

[0026] Among them, 1. Catheter stabilizing assembly, 2. Dressing roll assembly, 3. Triangular frame, 4. Pre-tension traction assembly, 5. Puncture catheter, 6. Sealing cap, 11. Stabilizing sleeve, 12. Stabilizing rope, 13. Pre-tightening spring, 21. Roll support, 22. Roll cylinder, 41. Silicone foot pad, 42. Foam plug, 51. Puncture section, 52. Connector section, 211. Horizontal groove section, 212. Longitudinal groove section, 221. Roller section, 222. Notch section, 223. Bevel section, 411. Offset extension section.

[0027] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0029] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] like Figures 1-8 As shown, the present invention proposes a PICC catheter fixation device for transthoracic axillary vein insertion, comprising a catheter stabilization assembly 1, a dressing roll assembly 2, a triangular frame 3, a pretension traction assembly 4, a puncture catheter 5, and a sealing cap 6. The catheter stabilization assembly 1 is evenly distributed in a ring inside the triangular frame 3, the dressing roll assembly 2 is located inside the triangular frame 3, the pretension traction assembly 4 is located at the bottom of the triangular frame 3, the sealing cap 6 is located at the top of the triangular frame 3, and the puncture catheter 5 is located in the catheter stabilization assembly 1.

[0031] The catheter stabilization assembly 1 includes a stabilizing sleeve 11, a stabilizing rope 12, and a pre-tightening spring 13. The puncture catheter 5 is disposed in the stabilizing sleeve 11. The stabilizing rope 12 is evenly distributed around the stabilizing sleeve 11 in a ring. The pre-tightening spring 13 is disposed between the inner wall of the triangular frame 3 and the stabilizing rope 12. The stabilizing sleeve 11 is located in the middle of the triangular frame 3.

[0032] By using the pre-tension spring 13 for buffering and energy absorption, the movement of the puncture catheter 5 relative to the skin can be reduced when the triangular frame 3 is deformed due to skin traction, thereby achieving the technical objective of increasing the stability of the puncture catheter 5.

[0033] The dressing roll assembly 2 includes a roll support 21 and a roll cylinder 22. The roll support 21 is fixed to the triangular frame 3. The roll support 21 is provided with a horizontal groove 211 and a vertical groove 212. The roll cylinder 22 is provided with a roller 221. The roller 221 can rotate and slide in the horizontal groove 211 and the vertical groove 212.

[0034] The roller 22 has a notch 222 in the middle, and the dressing is wound on the roller 22. The roller 221 has oblique cuts 223 at both ends that match the triangular frame 3.

[0035] During the dressing application process, the notch 222 prevents the roller 22 from squeezing the puncture catheter 5, thereby preventing catheter displacement caused by the dressing application.

[0036] During the process of tearing off the dressing, the guide of the transverse groove 211 makes the direction of the pulling force nearly parallel to the skin, thereby avoiding large-scale lifting or deformation of the skin and reducing the difficulty of tearing off the dressing.

[0037] The roller 22 can only be inserted into the longitudinal groove 212 when the notch 222 is in contact with the triangular frame 3, thus ensuring that the angle of the roller 22 when inserted into the longitudinal groove 212 is approximately correct, and that there is still a certain gap between the notch 222 and the triangular frame 3.

[0038] The pretensioning assembly 4 includes a silicone foot pad 41 and a foam plug 42. The silicone foot pad 41 and the foam plug 42 are located at the bottom of the triangular frame 3. The silicone foot pad 41 is located at the corner of the triangular frame 3, and the foam plug 42 is located at the edge of the triangular frame 3.

[0039] The silicone foot pad 41 is provided with a bias extension 411, which is located on one side close to the inside of the triangular frame 3.

[0040] When the human body is active, the skin is stretched. At this time, the bias extension 411 is offset to the outside. The deformation compensation of the silicone foot pad 41 can reduce the deformation of the triangular frame 3, thereby further improving the stability of the conduit stabilizing component 1.

[0041] The silicone foot pads 41 and foam plugs 42 are fixed to human skin with medical adhesive.

[0042] The puncture catheter 5 consists of a puncture section 51 and a connector section 52. After the puncture section 51 is inserted into the human body, the puncture point of the puncture section 51 and the skin is covered by a dressing. The connector section 52 is located in the stabilizing cannula 11.

[0043] The closed top cover 6 can be opened and is located above the triangular frame 3.

[0044] The triangular frame 3 is made of elastic material, and a positioning pin is provided between the closed top cover 6 and the triangular frame 3.

[0045] In practical use, the user first needs to insert the puncture part 51 through the skin into the corresponding blood vessel. The tip of the puncture part 51 and the connector part 52 remain outside the skin. Then, the silicone foot pad 41 and foam plug 42 are attached to the skin surface of the human body using medical adhesive. The attachment position has the following requirements: the tip of the triangular frame 3 is roughly horizontal and facing outward, and the connector part 52 is located at the center of the triangular frame 3.

[0046] When applying the dressing (the base of the dressing is a transparent sticker with elasticity), the dressing is first rolled around the outside of the roller 22, and then the roller 22 is placed into the longitudinal groove 212. Due to the limiting of the oblique cut 223, the roller 22 can only enter the longitudinal groove 212 at the correct angle; otherwise, it will interfere with the triangular frame 3. When the roller 221 reaches the bottom of the longitudinal groove 212, one end of the dressing will stick to the skin surface. Then, the roller 221 will be pushed to slide in the transverse groove 211 by the fork tool. During this process, the roller tube 22 will gradually roll and unfold the dressing and stick it to the skin. When the roller 22 rolls to the position of the puncture catheter 5, the notch 222 can avoid squeezing the puncture catheter 5.

[0047] After the dressing is applied, close and seal the top cover 6.

[0048] Since the connector 52 is placed in the stabilizing sleeve 11, when the human body moves, the skin will pull the triangular frame 3 through the pre-tension traction component 4. At this time, the offset extension 411 will shift towards the outside of the triangular frame 3 through its own deformation, thereby avoiding the skin traction from acting directly on the triangular frame 3, which helps to reduce the displacement of the puncture catheter 5.

[0049] When one side of the triangular frame 3 deforms, the stability of the stabilizing sleeve 11 is greatly improved because the other two sides pull on it. If the deformation directions of the sides of the triangular frame 3 are different, the pulling effect on the stabilizing sleeve 11 may cancel each other out.

[0050] When the dressing needs to be changed, simply open the closed top cover 6 and then use the fork tool to push the roller part 221 to slide to the longitudinal groove part 212. During this process, the dressing and sticker will be horizontally pulled and torn off until it leaves the location of the puncture catheter 5. Then remove the roller part 221 from the longitudinal groove part 212 to completely remove the dressing, and then replace it with a new dressing.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A device for fixing a PICC catheter inserted via the axillary vein through the chest wall, characterized in that: The device includes a catheter stabilizing assembly (1), a dressing roll assembly (2), a triangular frame (3), a pretension traction assembly (4), a puncture catheter (5), and a sealing cap (6). The catheter stabilizing assembly (1) is evenly distributed in a ring inside the triangular frame (3). The dressing roll assembly (2) is located inside the triangular frame (3). The pretension traction assembly (4) is located at the bottom of the triangular frame (3). The sealing cap (6) is located at the top of the triangular frame (3). The puncture catheter (5) is located in the catheter stabilizing assembly (1). The dressing roll assembly (2) includes a roll support (21) and a roll cylinder (22). The roll support (21) is fixed to a triangular frame (3). The roll support (21) is provided with a transverse groove (211) and a longitudinal groove (212). The roll cylinder (22) is provided with a roller (221). The roller (221) can rotate and slide in the transverse groove (211) and the longitudinal groove (212). The roller tube (22) has a notch (222) in the middle position, and the dressing is wound on the roller tube (22). The roller part (221) has oblique cuts (223) at both ends that match the triangular frame (3).

2. The PICC catheter fixation device for transthoracic axillary vein insertion according to claim 1, characterized in that: The catheter stabilization assembly (1) includes a stabilizing sleeve (11), a stabilizing rope (12), and a pre-tightening spring (13). The puncture catheter (5) is located in the stabilizing sleeve (11). The stabilizing rope (12) is evenly distributed around the stabilizing sleeve (11). The pre-tightening spring (13) is located between the inner wall of the triangular frame (3) and the stabilizing rope (12). The stabilizing sleeve (11) is located in the middle of the triangular frame (3).

3. A PICC catheter fixation device for transthoracic axillary vein insertion according to claim 2, characterized in that: The pretensioning assembly (4) includes a silicone foot pad (41) and a foam plug (42). The silicone foot pad (41) and the foam plug (42) are located at the bottom of the triangular frame (3). The silicone foot pad (41) is located at the corner of the triangular frame (3), and the foam plug (42) is located at the edge of the triangular frame (3).

4. A PICC catheter fixation device for transthoracic axillary vein insertion according to claim 3, characterized in that: The silicone foot pad (41) is provided with a bias extension (411), which is located on one side close to the inside of the triangular frame (3).

5. A PICC catheter fixation device for transthoracic axillary vein insertion according to claim 4, characterized in that: The silicone foot pads (41) and foam plugs (42) are fixed to human skin with medical adhesive.

6. A PICC catheter fixation device for transthoracic axillary vein insertion according to claim 5, characterized in that: The puncture catheter (5) consists of a puncture part (51) and a connector part (52). After the puncture part (51) is inserted into the human body, the puncture point of the puncture part (51) and the skin are covered by a dressing. The connector part (52) is located in the stabilizing cannula (11).

7. A PICC catheter fixation device for transthoracic axillary vein insertion according to claim 6, characterized in that: The closed top cover (6) can be opened and is located above the triangular frame (3).

8. A PICC catheter fixation device for transthoracic axillary vein insertion according to claim 7, characterized in that: The triangular frame (3) is made of elastic material, and a positioning pin is provided between the closed top cover (6) and the triangular frame (3).

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