Liquid storage cavity for infusion port and infusion port

Abstract

The liquid storage cavity comprises a liquid storage cavity body, the liquid storage cavity body comprises a circular cavity bottom arranged at the bottom of the liquid storage cavity body and a circle of side wall vertically arranged along the periphery of the cavity bottom, a hemispherical groove is formed in the cavity bottom, and the concave face of the groove is arranged on the inner surface of the cavity bottom. The convex face of the groove is arranged on the outer surface of the cavity bottom, the maximum height difference between the cavity bottom and the top opening of the liquid storage cavity is located at the vertex of the groove, a plurality of reinforcing rib grooves are formed in the groove in the circumferential direction of the groove at equal angles, reinforcing ribs and the cavity bottom are integrally formed, and a developing pattern is further arranged on the cavity bottom. The pattern of the developing pattern on the inner surface of the cavity bottom and the pattern on the outer surface of the cavity bottom are mirrored. According to the liquid storage cavity for the infusion port, the structural strength is improved, a puncture needle is prevented from puncturing the infusion port, meanwhile, whether the infusion port is overturned or not is conveniently determined, the puncture position is accurately positioned, and the safety performance of the infusion port is improved.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a liquid storage cavity for an infusion port and an infusion port. Background Art

[0002] An infusion port is a fully implanted infusion drug delivery system that is buried in the human body, also known as an implantable drug delivery device. The system includes a central venous catheter, with a device called an injection seat connected to the end of the catheter. The entire device is completely buried in the body; it has the characteristics of long retention time and few complications.

[0003] The liquid storage cavity in the infusion port is used to store liquid medicine. The puncture needle enters the liquid storage cavity after passing through the rubber injection seat at the top of the liquid storage cavity, and injects liquid medicine into the liquid storage cavity. In the prior art, the liquid storage cavity of most infusion ports is integrally formed with the port seat, such as the utility model patent with the authorization announcement number CN218391783U, which is convenient for simplifying the structure and ensuring the sealing performance of the liquid storage cavity. However, after long-term use, the liquid storage cavity is easily pierced by the puncture needle, which affects the service life and safety of use; some split liquid storage cavities are fixed in the port seat by glue bonding or ultrasonic welding, but the sealing performance at the bonding / welding gap is poor. Some integrally processed liquid storage cavities, such as the utility model patent with the authorization announcement number CN219271762U, use an integrally formed titanium alloy liquid storage cavity, which can ensure the sealing performance of the liquid storage cavity while ensuring the strength of the liquid storage cavity, avoiding puncture by the puncture needle, thereby ensuring the safety of the infusion port. However, the bottoms of the above-mentioned various types of liquid storage cavities are all flat, and the compressive strength of the central area where the puncture needle has a higher probability of puncture is inconsistent with that of other areas at the bottom of the infusion port. In addition, in the prior art, the infusion port is usually positioned with the help of imaging equipment, but the accuracy of puncture positioning needs to be further improved. For example, the infusion port is prone to flip over during long-term use. When the infusion port is flipped over, normal puncture cannot be performed. Therefore, it is necessary to add a structure that can determine the front and back sides of the infusion port. Utility Model Content

[0004] Therefore, in order to solve the above problems, the utility model provides a liquid storage chamber for an infusion port and an infusion port.

[0005] The utility model is realized through the following technical solutions:

[0006] A liquid storage cavity for an infusion port comprises a circular cavity bottom arranged at the bottom thereof and a circle of side walls arranged vertically along the outer circumference of the cavity bottom, a liquid outlet is arranged on the side wall, and the top of the liquid storage cavity is open, a hemispherical groove is arranged in the middle of the cavity bottom of the liquid storage cavity, and is coaxial with the liquid storage cavity, the concave surface of the groove is arranged on the inner surface of the cavity bottom, and the convex surface of the groove is arranged on the outer surface of the cavity bottom, the maximum height difference between the cavity bottom and the top opening of the liquid storage cavity is located at the vertex of the groove, a plurality of reinforcing ribs are arranged on the groove at equal angles along its circumference, each reinforcing rib extends outward from the groove along the radial direction of the groove, the reinforcing rib comprises a concave surface and a convex surface, the concave surface of the reinforcing rib is arranged on the inner surface of the cavity bottom, and the convex surface of the reinforcing rib is arranged on the outer surface of the cavity bottom, the groove, the reinforcing rib and the cavity bottom are integrally formed, and a developing pattern is also arranged on the cavity bottom, and the pattern of the developing pattern on the inner surface of the cavity bottom and the pattern on the outer surface of the cavity bottom are mirror images.

[0007] Preferably, the developing pattern is a hollow developing hole arranged on the cavity bottom, and the hollow developing hole is arranged at the interval between the reinforcing ribs.

[0008] Preferably, four reinforcing ribs are arranged on the periphery of the groove, and the angle between two adjacent reinforcing ribs is 90°.

[0009] Preferably, the developing pattern includes hollow "C" and "T" patterns, and the two patterns are diagonally arranged on the periphery of the groove.

[0010] Preferably, a groove eave is provided at the top of the side wall along its opening, and the groove eave extends along the outer circumference of the opening.

[0011] Preferably, a transition section is provided between the side wall and the bottom of the liquid storage chamber, the transition section is arc-shaped, and the transition section smoothly transitions to the side wall and the bottom of the chamber respectively.

[0012] Preferably, the reinforcing rib comprises a connecting section arranged in the groove and an extending section extending to the outer circumference of the groove, and one end of the extending section close to the groove is a semi-cylindrical surface, and the other end is a 1 / 4 spherical surface.

[0013] Preferably, the liquid storage chamber is a titanium alloy liquid storage chamber or a non-magnetic stainless steel liquid storage chamber.

[0014] Preferably, the structures on the liquid storage chamber are integrally formed.

[0015] An infusion port includes the fluid storage cavity for the infusion port as described above.

[0016] The beneficial effects of the technical solution of the utility model are mainly reflected in:

[0017] 1. The liquid storage cavity is integrally formed to ensure the sealing performance of the liquid storage cavity. The liquid storage cavity is made of titanium alloy or non-magnetic stainless steel. A developing structure is arranged at the bottom of the liquid storage cavity. The developing pattern on the inner surface of the cavity bottom and the pattern on the outer surface of the cavity bottom are mirror images, which is convenient for determining the positive and negative positions of the infusion port, thereby judging whether the infusion port is flipped, accurately locating the puncture position, and avoiding puncture failure.

[0018] 2. A hemispherical groove and reinforcing ribs are coaxially arranged in the middle of the bottom of the liquid storage cavity, and the concave surfaces of the groove and the reinforcing ribs are arranged on the inner surface of the bottom of the cavity, which can increase the puncture height in the middle of the liquid storage cavity. On the basis of this structure, the height of the product can be further reduced, and the comfort of the patient using the product can be improved. At the same time, the convex surfaces of the groove and the reinforcing ribs are arranged at the bottom of the liquid storage cavity to increase the structural strength of the bottom of the liquid storage cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a stereoscopic view of a fluid reservoir for an infusion port in a first-person perspective;

[0020] Figure 2 yes Figure 1 A magnified view of part A;

[0021] Figure 3 is a stereoscopic view of the fluid reservoir for the infusion port at a second viewing angle;

[0022] Figure 4 is a top view of a fluid reservoir for an infusion port;

[0023] Figure 5 is a cross-sectional view of a fluid reservoir for an infusion port;

[0024] Figure 6 It is a schematic diagram of the development status of the infusion port in the anteroposterior implantation state and the flipped state;

[0025] Figure 7 It is a cross-sectional view after the liquid storage chamber, the connecting pipe and the port seat are integrally formed. DETAILED DESCRIPTION

[0026] In order to make the purpose, advantages and features of the utility model more clearly and in detail, the following preferred embodiments are illustrated and explained through non-limiting descriptions. This embodiment is only a typical example of the application of the technical solution of the utility model. Any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection required by the utility model.

[0027] At the same time, it is stated that in the description of the scheme, it should be noted that the directions or positional relationships indicated by the terms "center", "up", "down", "left", "right", "front", "back", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0028] In addition, the terms "first" and "second" in this solution are only used for descriptive purposes and cannot be understood as indicating or implying the order of importance, or implicitly indicating the number of technical features shown. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In this utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] The utility model discloses a liquid storage cavity for an infusion port, such as Figure 1 As shown, it includes a circular cavity bottom 1 arranged at the bottom thereof and a circle of side walls 2 arranged vertically along the outer circumference of the cavity bottom 1, the side walls 2 are provided with a liquid outlet 3, and the top of the liquid storage cavity is open, wherein the liquid storage cavity can be installed in the port seat 10 of the infusion port by gluing or welding, as shown in FIG. Figure 7 As shown, in a preferred embodiment, the liquid storage chamber and the end portion of the connecting tube 9 connected to the liquid storage chamber are integrally injection molded with the port seat 10 through a positioning isolation insert overmolding process, thereby improving the firmness and sealing performance of the connection between the liquid storage chamber, the connecting tube 9 and the port seat 10, and an injection seat is also installed at the top opening of the liquid storage chamber to facilitate the insertion of the puncture needle.

[0030] like Figure 1 , Figure 3 , Figure 5 As shown, a hemispherical groove 4 is arranged in the middle of the cavity bottom 1 of the liquid storage cavity, and the groove 4 is coaxial with the liquid storage cavity. The concave surface of the groove 4 is arranged on the inner surface of the cavity bottom 1, and the convex surface of the groove 4 is arranged on the outer surface of the cavity bottom 1. The maximum height difference between the cavity bottom 1 and the top opening of the liquid storage cavity is located at the vertex of the groove 4. On the one hand, the groove 4 is used to cooperate with the imaging equipment to accurately locate the puncture position, and the puncture needle is preferentially aligned with the position of the groove 4 during puncture. On the other hand, a avoidance height is provided at the position of the groove 4 to provide a buffer height when the puncture needle punctures.

[0031] like Figure 1As shown, the groove 4 is provided with a plurality of reinforcing ribs 5 at equal angles along its circumference to further enhance the structural strength of the cavity bottom 1. Each reinforcing rib 5 extends outward from the groove 4 along the radial direction of the groove 4. The reinforcing rib 5 includes a concave surface and a convex surface. The concave surface of the reinforcing rib 5 is provided on the inner surface of the cavity bottom 1, and the convex surface of the reinforcing rib 5 is provided on the outer surface of the cavity bottom 1. Figure 2 As shown, in a preferred embodiment, the reinforcing rib 5 includes a connecting section 501 arranged in the groove 4 and an extension section 502 extending to the outer periphery of the groove 4, and the extension section 502 is a semi-cylindrical surface at one end close to the groove 4 and a 1 / 4 spherical surface at the other end, and the radius of the spherical surface is the same as the diameter of the cylindrical surface.

[0032] The groove 4, the reinforcing rib 5 and the cavity bottom 1 are integrally formed. In a preferred embodiment, in order to facilitate development and ensure the rigidity and wear resistance of the liquid storage cavity, the liquid storage cavity is a titanium alloy liquid storage cavity or a stainless steel liquid storage cavity. Preferably, a liquid storage cavity made of titanium alloy or non-magnetic stainless steel that meets the requirements for human implantation is used, which is perfectly compatible with magnetic resonance imaging (MRI) imaging examinations. At the same time, in order to ensure the sealing performance of the liquid storage cavity, the various structures on the liquid storage cavity are integrally formed, and the groove 4 and the reinforcing rib 5 are integrally stamped.

[0033] like Figure 1-Figure 4 As shown, in some embodiments, a developing structure 6 is also provided on the cavity bottom 1, such as Figure 6 As shown, the pattern of the developing structure 6 on the inner surface of the cavity bottom 1 and the pattern on the outer surface of the cavity bottom 1 are mirror images, so whether the infusion port is flipped can be quickly judged by the position of the developing structure 6. In a preferred embodiment, the developing structure 6 is a hollow developing hole arranged on the cavity bottom 1, and the hollow developing hole is arranged at the interval between the reinforcing ribs 5, such as Figure 7 As shown, since the liquid storage cavity and the port seat 10 are injection molded as one body, the sealing performance of the liquid storage cavity can be ensured to prevent the liquid from flowing out of the hollow developing structure 6.

[0034] like Figure 1-Figure 4 As shown, in one embodiment, four reinforcing ribs 5 are arranged on the periphery of the groove 4, and the angle between two adjacent reinforcing ribs 5 is 90°. The developing structure 6 includes hollow "C" and "T" patterns, and the two patterns are arranged diagonally on the periphery of the groove 4.

[0035] like Figure 4 , Figure 5 As shown, in some embodiments, a circle of groove eaves 8 is provided along the opening of the top of the side wall 2, and the groove eaves 8 extend along the outer periphery of the opening. The groove eaves 8 can improve the bonding strength and stability of the liquid storage cavity embedded in the port seat 10.

[0036] like Figure 1 , Figure 3 , Figure 4 , Figure 5 As shown, in some embodiments, a transition section 7 is provided between the side wall 2 of the liquid storage chamber and the chamber bottom 1. The transition section 7 is arc-shaped and smoothly transitions between the transition section 7 and the side wall 2 and the chamber bottom 1, respectively.

[0037] The utility model also discloses an infusion port, comprising the above-mentioned liquid storage cavity for the infusion port.

[0038] There are many implementation methods of the utility model, and all technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of the utility model.

Claims

1. A liquid storage cavity for an infusion port, comprising a circular cavity bottom arranged at the bottom thereof and a circle of side walls arranged vertically along the outer circumference of the cavity bottom, wherein the side walls are provided with a liquid outlet, and the top of the liquid storage cavity is open, characterized in that: A hemispherical groove is arranged in the middle of the bottom of the liquid storage cavity and is coaxial with the liquid storage cavity. The concave surface of the groove is arranged on the inner surface of the bottom of the cavity, and the convex surface of the groove is arranged on the outer surface of the bottom of the cavity. The maximum height difference between the bottom of the cavity and the top opening of the liquid storage cavity is located at the vertex of the groove. A plurality of reinforcing ribs are arranged at equal angles along the circumference of the groove, and each reinforcing rib extends outward from the inside of the groove along the radial direction of the groove. The reinforcing rib includes a concave surface and a convex surface. The concave surface of the reinforcing rib is arranged on the inner surface of the bottom of the cavity, and the convex surface of the reinforcing rib is arranged on the outer surface of the bottom of the cavity. The groove, the reinforcing rib and the bottom of the cavity are integrally formed. A developing pattern is also arranged on the bottom of the cavity, and the pattern of the developing pattern on the inner surface of the bottom of the cavity and the pattern on the outer surface of the bottom of the cavity are mirror images.

2. The liquid storage chamber for an infusion port according to claim 1, characterized in that: The developing pattern is a hollow developing hole arranged on the cavity bottom, and the hollow developing hole is arranged at the interval between the reinforcing ribs.

3. The liquid storage chamber for an infusion port according to claim 2, characterized in that: Four reinforcing ribs are arranged on the outer periphery of the groove, and the angle between two adjacent reinforcing ribs is 90°.

4. The liquid storage chamber for an infusion port according to claim 3, characterized in that: The developing pattern includes hollow "C" and "T" patterns, and the two patterns are diagonally arranged on the outer periphery of the groove.

5. The liquid storage chamber for an infusion port according to claim 1, characterized in that: The top of the side wall is provided with a groove flange along the opening thereof, and the groove flange extends along the outer periphery of the opening.

6. The liquid storage chamber for an infusion port according to claim 1, characterized in that: A transition section is also provided between the side wall and the bottom of the liquid storage cavity. The transition section is arc-shaped and smoothly transitions between the side wall and the bottom of the cavity.

7. The liquid storage chamber for an infusion port according to claim 1, characterized in that: The reinforcing rib comprises a connecting section arranged in the groove and an extending section extending to the outer circumference of the groove. One end of the extending section close to the groove is a semi-cylindrical surface, and the other end is a 1 / 4 spherical surface.

8. The liquid storage chamber for an infusion port according to claim 1, characterized in that: The liquid storage chamber is a titanium alloy liquid storage chamber or a non-magnetic stainless steel liquid storage chamber.

9. The liquid storage chamber for an infusion port according to claim 1, characterized in that: The structures on the liquid storage cavity are integrally formed.

10. An infusion port, characterized in that: It comprises a liquid storage chamber for an infusion port as described in any one of claims 1-9.

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