TPE precise filtering infusion apparatus

Abstract

The utility model discloses a TPE (thermoplastic elastomer) precise filtering infusion apparatus, which comprises a bottle stopper puncture outfit, a drip chamber, an injection part, a liquid medicine filter and an intravenous infusion needle which are sequentially connected together through an infusion hose, a flow regulator is further sleeved on the infusion hose between the drip chamber and the injection part, the liquid medicine filter consists of an outer cylinder and a filter membrane inner cylinder, and the filter membrane inner cylinder is connected with the infusion hose. The top end of the outer cylinder is open, the bottom end of the outer cylinder is closed, the top end of the filter membrane inner cylinder is closed, the bottom end of the filter membrane inner cylinder is open and is fixed with the closed bottom end of the outer cylinder, the outer cylinder is sleeved outside the filter membrane inner cylinder, and a filter cavity is formed between the outer cylinder and the filter membrane inner cylinder. According to the liquid medicine filter, liquid medicine enters the filter cavity from the top end of the outer barrel, then permeates into the filter cavity through the filter membrane inner barrel and finally flows out of the bottom end of the filter membrane inner barrel, direct impact of the liquid medicine on a filter membrane of the filter membrane inner barrel is reduced, and therefore the filter membrane inner barrel is kept to have a better filter effect, and the liquid medicine is filtered more sufficiently.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a TPE precision filtering infusion set. Background Art

[0002] The TPE precision filter infusion set is a medical device used for clinical intravenous infusion. It is characterized by the use of polyolefin thermoplastic elastomer (TPE) material and is equipped with a precision liquid medicine filter, which can effectively filter out particles in the liquid medicine to ensure the safety of the patient's infusion.

[0003] During use, the existing disposable infusion set's filter cannot fully filter the solution, and the filtration efficiency is slow, resulting in the solution being mixed with particles that have not been completely melted and mixed, posing a certain risk to the patient.

[0004] To this end, we propose a TPE precision filtration infusion set to solve the above problems. Utility Model Content

[0005] The purpose of the present invention is to provide a TPE precision filtering infusion set to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A TPE precision filtering infusion set comprises a bottle stopper puncture device, a dripping funnel, an injection piece, a drug liquid filter and an intravenous infusion needle connected in sequence through an infusion hose. A flow regulator is also sleeved on the infusion hose between the dripping funnel and the injection piece. The drug liquid filter consists of an outer tube and a filter membrane inner tube. The top end of the outer tube is open and the bottom end is closed. The top end of the filter membrane inner tube is closed and the bottom end is open and fixed to the closed bottom end of the outer tube. The outer tube is sleeved on the outside of the filter membrane inner tube, and a filter cavity is formed between the outer tube and the filter membrane inner tube. A strap is also installed on the infusion hose between the drug liquid filter and the intravenous infusion needle.

[0008] In a further embodiment, a conical guide head is provided at the top of the filter membrane inner cylinder.

[0009] In a further embodiment, the cross-section of the filter membrane inner tube is a petal-shaped structure with uneven contours.

[0010] In a further embodiment, a round hair sticker is connected to the lower surface of one end of the strap, and a burr sticker is connected to the upper surface of the other end of the strap.

[0011] In a further embodiment, a non-slip pad is connected to the lower surface of the end of the strap close to the bristle sticker.

[0012] In a further embodiment, the bandage is movably connected to the infusion hose via a sliding sleeve, the sliding sleeve is sleeved outside the infusion hose, and a buckle is connected to the outer wall of the sliding sleeve, and the bandage passes through the interior of the buckle.

[0013] In a further embodiment, a flange protruding from the outer surface of the strap is provided on the strap near the bristle sticker, and the size of the flange is larger than the size of the hole of the buckle.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model provides a liquid medicine filter composed of an outer cylinder and a filter membrane inner cylinder, so that the liquid medicine enters the filter cavity from the top of the outer cylinder, then penetrates into the interior through the filter membrane inner cylinder, and finally flows out from the bottom end of the filter membrane inner cylinder, which is beneficial to reduce the direct impact of the liquid medicine on the filter membrane of the filter membrane inner cylinder, thereby maintaining a better filtering effect of the filter membrane inner cylinder, making the liquid medicine filtration more sufficient, and the liquid medicine can simultaneously penetrate and filter inward along the outer circumferential surface of the filter membrane inner cylinder, so that the filtration efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the outer cylinder of the liquid medicine filter of the utility model after partial section;

[0018] Figure 3 This is a schematic diagram of the structure of the cutaway outer cylinder and the filter membrane inner cylinder of the utility model;

[0019] Figure 4 This is a schematic diagram of the installation structure of the binding strap and the sliding sleeve of the utility model.

[0020] In the figure: 1. Infusion hose; 2. Bottle stopper puncture device; 3. Drip chamber; 4. Flow regulator; 5. Injection piece; 6. Liquid filter; 61. Outer cylinder; 62. Inner cylinder of filter membrane; 63. Filter cavity; 64. Diversion head; 7. Intravenous infusion needle; 8. Bandage; 81. Round hair sticker; 82. Barbed hair sticker; 83. Anti-slip pad; 84. Flange; 9. Sleeve; 91. Buckle. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0023] 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.

[0024] See also Figure 1-3 A TPE precision filtration infusion set includes a bottle stopper puncture device 2, a dripping funnel 3, an injection piece 5, a liquid medicine filter 6 and an intravenous infusion needle 7 connected in sequence through an infusion hose 1. A flow regulator 4 is also sleeved on the infusion hose 1 between the dripping funnel 3 and the injection piece 5. The liquid medicine filter 6 consists of an outer tube 61 and a filter membrane inner tube 62. The outer tube 61 and the filter membrane inner tube 62 are both cylindrical structures with hollow interiors. The top of the outer tube 61 is open and connected to the infusion hose 1 as the liquid inlet end. The bottom end of the outer tube 61 is closed and the top end of the filter membrane inner tube 62 is closed. The end is closed, and a gap is left between the top of the outer tube 61 and the filter membrane inner tube 62 for solution flow. The bottom end of the filter membrane inner tube 62 is open and fixed to the closed bottom end of the outer tube 61, and is connected to the infusion hose 1 as the liquid outlet end. The outer tube 61 is sleeved on the outside of the filter membrane inner tube 62, and a filter cavity 63 is formed between the outer tube 61 and the filter membrane inner tube 62, so that the medicinal solution first enters the filter cavity 63 from the top of the outer tube 61, then penetrates into the interior through the filter membrane inner tube 62, and finally flows out from the bottom end of the filter membrane inner tube 62. The filter membrane inner tube 62 adopts a nuclear pore filter membrane, which has a good filtering effect on the solution.

[0025] See also Figure 2-3 In order to further improve the filtering effect of the solution, a conical guide head 64 is provided at the top of the filter membrane inner cylinder 62, so that when the solution enters the liquid filter 6, it first impacts the guide head 64, and then spreads out along the inclined surface of the guide head 64 and flows downward into the filter cavity 63, which can effectively avoid direct impact on the surface of the filter membrane inner cylinder 62, thereby maintaining the stable filtering effect of the filter membrane inner cylinder 62. At the same time, the cross-section of the filter membrane inner cylinder 62 is a concave and convex petal-shaped structure, which is conducive to increasing the filtering surface area of the filter membrane, thereby improving the filtering effect.

[0026] See also Figure 4 Considering that after the addition of the liquid medicine filter 6, the weight of the end of the infusion hose 1 close to the intravenous infusion needle 7 increases, it is easy to pull the intravenous infusion needle 7, which is not conducive to the patient's hand movement during infusion. Therefore, a strap 8 is also installed on the infusion hose 1 between the liquid medicine filter 6 and the intravenous infusion needle 7 to facilitate tying the infusion hose 1 between the liquid medicine filter 6 and the intravenous infusion needle 7 to the patient's arm, thereby reducing the situation where the infusion hose 1 shakes and pulls the intravenous infusion needle 7.

[0027] See also Figure 4 In order to facilitate the use of the strap 8, a round wool sticker 81 is connected to the lower surface of one end of the strap 8, and a bristle sticker 82 is connected to the upper surface of the other end of the strap 8, so that the strap 8 can be tied by utilizing the adhesion between the round wool sticker 81 and the bristle sticker 82. At the same time, according to needs, the length of the round wool sticker 81 can be set longer to facilitate the adjustment of the tightness of the binding.

[0028] See also Figure 4 Furthermore, in order to prevent the strap 8 from slipping, a non-slip pad 83 is connected to the lower surface of one end of the strap 8 close to the bristle sticker 82. The non-slip pad 83 is made of silicone material, thereby increasing the friction when in contact with the patient's arm.

[0029] See also Figure 4 In order to facilitate the installation between the strap 8 and the infusion hose 1, the strap 8 is movably connected to the infusion hose 1 through a sliding sleeve 9. The sliding sleeve 9 is sleeved on the outside of the infusion hose 1. The sliding sleeve 9 has a three-quarter cylindrical structure, which is convenient for buckling on the outside of the infusion hose 1 and can be moved and adjusted along the length direction of the infusion hose 1. The outer wall of the sliding sleeve 9 is connected with a buckle 91, and the strap 8 passes through the inside of the buckle 91, thereby facilitating the connection of the strap 8.

[0030] See also Figure 4Furthermore, in order to prevent the strap 8 from falling out of the buckle 91 when the strap 8 is pulled, a flange 84 protruding from the outer surface of the strap 8 is provided near the bristle sticker 82 on the strap 8. The size of the flange 84 is larger than the perforation size of the buckle 91, so that when the user pulls the end of the round bristle sticker 81, the end of the bristle sticker 82 will not fall out of the buckle 91 due to the obstruction of the flange 84.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0032] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A TPE precision filtration infusion set, comprising a bottle stopper puncture device (2), a dripping funnel (3), an injection piece (5), a liquid medicine filter (6), and an intravenous infusion needle (7) connected in sequence through an infusion hose (1), wherein a flow regulator (4) is further sleeved on the infusion hose (1) between the dripping funnel (3) and the injection piece (5), and characterized in that: The liquid medicine filter (6) is composed of an outer tube (61) and a filter membrane inner tube (62). The top end of the outer tube (61) is open and the bottom end is closed. The top end of the filter membrane inner tube (62) is closed and the bottom end is open and fixed to the closed bottom end of the outer tube (61). The outer tube (61) is sleeved outside the filter membrane inner tube (62), and a filter cavity (63) is formed between the outer tube (61) and the filter membrane inner tube (62). A binding band (8) is also installed on the infusion hose (1) between the liquid medicine filter (6) and the intravenous infusion needle (7).

2. A TPE precision filtration infusion set according to claim 1, characterized in that: A conical flow guide head (64) is provided at the top end of the filter membrane inner cylinder (62).

3. The TPE precision filtration infusion set according to claim 1, characterized in that: The cross section of the filter membrane inner cylinder (62) is a petal-shaped structure with uneven contours.

4. The TPE precision filtration infusion set according to claim 1, characterized in that: The lower surface of one end of the binding strap (8) is connected to a round hair sticker (81), and the upper surface of the other end of the binding strap (8) is connected to a bristle sticker (82).

5. The TPE precision filtration infusion set according to claim 4, characterized in that: The lower surface of one end of the binding strap (8) close to the bristle sticker (82) is connected to an anti-slip pad (83).

6. The TPE precision filtration infusion set according to claim 1, characterized in that: The binding band (8) is movably connected to the infusion hose (1) via a sliding sleeve (9), the sliding sleeve (9) is sleeved on the outside of the infusion hose (1), and the outer wall of the sliding sleeve (9) is connected to a buckle (91), and the binding band (8) passes through the inside of the buckle (91).

7. The TPE precision filtration infusion set according to claim 6, characterized in that: A flange (84) protruding from the outer surface of the binding strap (8) is provided on the binding strap (8) at a position close to the bristle sticker (82), and the size of the flange (84) is larger than the size of the hole of the buckle (91).

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