Catheter tip separating and collecting device

Abstract

The utility model relates to a catheter tip separating and collecting device which is used for separating and collecting tips of catheters. The catheter tip separating and collecting device comprises a collecting body and a separating body detachably connected with the collecting body. The separation main body is through along the axial direction and can be communicated with the collection cavity of the collection main body; a cap assembly for sealing an opening is arranged at the opening of the collection main body; a pair of shearing assemblies for separating the tip of the catheter is arranged on the separating main body; each shearing assembly comprises a blade which is telescopically arranged on the separation body in the horizontal direction, and at least part of the blade is located in a cavity defined by the separation body all the time; the end, located outside the separation body, of the blade is connected with a push plate, and a spring is connected between the push plate and the outer wall of the separation body. Compared with the prior art, the utility model realizes the whole process operation of cutting, separating, collecting and storing the tip of the catheter, and has the advantages of safety, high efficiency, low cost and the like.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a catheter tip separation and collection device. Background Technology

[0002] Central venous catheters (CVCs) and peripherally inserted central venous catheters (PICCs) are commonly used venous access methods in clinical practice. Catheter-related bloodstream infection (CRBSI) is a common complication of central venous catheters. It refers to bacteremia or fungemia in patients with intravascular catheters or within 48 hours after removal of intravascular catheters, accompanied by infection manifestations such as fever, chills, or hypotension, with other identifiable sources of infection besides the intravascular catheter.

[0003] When a patient with a central venous catheter develops a catheter-related bloodstream infection, the catheter must first be removed, and the catheter tip collected as a specimen for bacterial culture to determine the cause of the infection, allowing for targeted medication. Current catheter tip separation procedures involve placing the tip into a sterile specimen collector using sterile scissors. This process requires sterilization of the scissors, is cumbersome, and often requires two healthcare professionals. Furthermore, using disposable sterile blades increases the risk of sharps injuries to healthcare workers, raising occupational exposure risks and potentially leading to secondary contamination, thus increasing labor costs.

[0004] Therefore, there is an urgent need to develop a new type of disposable catheter tip separation device that can safely, quickly, and conveniently separate catheter tips for subsequent testing and culture. Utility Model Content

[0005] The purpose of this invention is to provide a catheter tip separation and collection device for safe, fast, and convenient separation and collection of catheter tips.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A catheter tip separation and collection device is provided for separating and collecting the tip of a catheter. The catheter tip separation and collection device includes a collection body and a separation body detachably connected to the collection body. The separation body extends axially and communicates with the collection cavity of the collection body.

[0008] The opening of the collection body is provided with a cap assembly for sealing the opening;

[0009] The separation body is provided with a pair of shearing assemblies for separating the catheter tip; each shearing assembly includes a blade that is retractably mounted on the separation body in the horizontal direction, and at least part of the blade is always located within the cavity formed by the separation body; the end of the blade located outside the separation body is connected to a push plate, and a spring is connected between the push plate and the outer wall of the separation body.

[0010] Furthermore, the collection body includes a collection section and a threaded section integrally connected to the collection section, and a collection cavity for collecting the catheter tip is formed within the collection section.

[0011] Furthermore, the inner wall of the separating body is provided with an internal thread that mates with the threaded section.

[0012] Furthermore, the cap assembly includes a connecting ring, a flexible strip, and a cap.

[0013] Furthermore, the connecting ring is fitted at the connection between the collecting section and the threaded section of the collecting body.

[0014] Furthermore, the flexible strip is connected to the connecting ring.

[0015] Furthermore, the cap is disposed at the end of the flexible strip, and the cap is provided with an internal thread that mates with the threaded section.

[0016] Furthermore, the separating body includes a positioning part and a connecting part integrally connected to the positioning part, and the connecting part is threadedly connected to the collecting body.

[0017] Furthermore, the positioning part is a trumpet-shaped variable diameter design that is wider at the top and narrower at the bottom, while the connecting part is a constant diameter design, and the positioning part and the connecting part transition naturally.

[0018] Furthermore, the connecting part is provided with a blade sliding groove for horizontal movement of the blade.

[0019] Furthermore, all the blades are equipped with sharp crescent-shaped cutting edges.

[0020] Furthermore, the shearing assembly on the separating body is divided into a first shearing assembly and a second shearing assembly.

[0021] Furthermore, the first shearing component and the second shearing component are arranged symmetrically about the center line of the separation body in the circumferential direction.

[0022] Furthermore, the blades of the first and second shearing components are staggered vertically when shearing the conduit.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) The catheter tip separation and collection device of this utility model is designed with a detachable and interconnected collection body and a separation body, so that the cut catheter tip can fall directly into the collection cavity of the collection body without secondary transfer; the catheter tip can be quickly cut by a pair of shearing components on the separation body; and finally, after the separation body is removed, it is sealed and preserved by the quick closing of the cap assembly, thus realizing the whole process operation of the catheter tip from cutting and separation to collection to final sealing and preservation.

[0025] (2) The catheter tip separation and collection device of this utility model overcomes the defects of insufficient sealing, cumbersome operation and poor adaptability in the prior art through the design of threaded connection positioning, integrated cap and modular expansion, and can realize safe, efficient and low-cost standardized catheter tip separation and preservation.

[0026] (3) The catheter tip separation and collection device of this utility model can effectively ensure that the separated catheter tip is sealed and preserved in a sterile environment through the design of the cap assembly, thus avoiding sample contamination; the blade is always partially located in the cavity of the separation body, which can greatly reduce the risk of the operator accidentally touching the blade and meets the medical device safety standards.

[0027] (4) The catheter tip separation and collection device of this utility model is ergonomically designed. By pressing the push plate, the blades are driven to move closer to each other for cutting. No complicated tools or extra steps are required. Medical staff can complete the cutting and collection actions with one hand. After the cutting is completed and the push plate is released, the spring can retract the blades to the initial position, which greatly simplifies the operation process and saves operation time.

[0028] (5) The catheter tip separation and collection device of this utility model is for single use, and the collected catheter tip can be sent directly for testing. In addition, the size of the separation body, the collection body and the shearing component can be adjusted to adapt to different medical scenarios such as pediatric / adult catheters and rigid / soft catheters. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the catheter tip separation and collection device of this utility model.

[0030] Figure 2 This is a schematic diagram of the catheter tip separation and collection device of this utility model after the catheter is inserted.

[0031] Figure 3 This is a cross-sectional view of the shearing component in Embodiment 2 of this utility model.

[0032] Figure 4 This is a schematic diagram of the structure of the collecting body in Embodiment 2 of this utility model.

[0033] Figure 5This is a schematic diagram of the cap assembly in Embodiment 2 of this utility model.

[0034] Figure 6 This is a schematic diagram of the structure of the separation body in Embodiment 3 of this utility model.

[0035] Figure 7 This is a schematic diagram of the blade structure in Embodiment 4 of this utility model.

[0036] Figure 8 This is a schematic diagram of the structure of the two shearing components in Embodiment 4 of this utility model.

[0037] Figure 9 This is a cross-sectional view of the two shearing components overlapping in Embodiment 4 of this utility model.

[0038] Explanation of markings in the diagram:

[0039] 1-Catheter;

[0040] 2-Collection body, 21-Collection section, 22-Threaded section;

[0041] 3-Separation body, 31-Positioning part, 32-Connecting part, 33-Blade sliding groove;

[0042] 4-Cap assembly, 41-Connecting ring, 42-Flexible strip, 43-Cap;

[0043] 5-Shearing assembly, 51-Blade, 52-Push plate, 53-Spring, 5a-First shearing assembly, 5b-Second shearing assembly. Detailed Implementation

[0044] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0045] In this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0046] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0047] Example 1:

[0048] This embodiment provides a catheter tip separation and collection device for separating and collecting the tip of catheter 1.

[0049] like Figure 1-2 As shown, the catheter tip separation and collection device of this embodiment includes a collection body 2 and a separation body 3 detachably connected to the collection body 2. The separation body 3 is axially continuous and can communicate with the collection cavity of the collection body 2, ensuring that the tip of the catheter 1 can fall directly into the collection cavity of the collection body 2 by gravity after cutting, without the need for secondary transfer, thus reducing the probability of contamination.

[0050] In this embodiment, the collection body 2 is provided with a cap assembly 4 for sealing the opening, which can effectively ensure that the tip of the catheter 1 after separation is sealed and preserved in a sterile environment, reducing sample contamination.

[0051] In this embodiment, the separation body 3 is equipped with a pair of shearing assemblies 5 for separating the tip of the catheter 1. Each shearing assembly 5 includes a blade 51 that is horizontally retractable on the separation body 3. At least a portion of the blade 51 is always located within the cavity formed by the separation body 3, reducing the risk of the operator accidentally touching the blade. A push plate 52 is connected to the end of the blade 51 located outside the separation body 3. A spring 53 is connected between the push plate 52 and the outer wall of the separation body 3. The cooperation between the push plate 52 and the spring 53 controls the cutting force and facilitates resetting.

[0052] The catheter tip separation and collection device of this embodiment, by setting up a detachable and interconnected collection body 2 and a separation body 3, allows the cut catheter tip 1 to fall directly into the collection cavity of the collection body 2 without secondary transfer; the catheter tip 1 can be quickly cut by a pair of shearing components 5 on the separation body 3; finally, after the separation body 3 is removed, it is sealed and preserved by the quick closing of the cap component 4, thus realizing the whole process operation of the catheter tip 1 from cutting and separation to collection to final sealing and preservation.

[0053] Example 2:

[0054] This embodiment provides a catheter tip separation and collection device for separating and collecting the tip of catheter 1.

[0055] The difference from Embodiment 1 is that, in order to achieve the cooperation of the collecting body 2, the separating body 3, and the cap assembly 4, as follows: Figure 3-5 As shown, the collection body 2 in this embodiment includes a collection section 21 and a threaded section 22 integrally connected to the collection section 21. A collection cavity for collecting the tip of the catheter 1 is formed within the collection section 21. The collection section 21 can refer to a medical urine test tube, and is made of transparent material and pre-sterilized.

[0056] The separating body 3 in this embodiment includes a positioning part 31 and a connecting part 32 integrally connected to the positioning part 31. The inner wall of the connecting part 32 of the separating body 3 is provided with an internal thread that mates with the threaded section 22, so that the connecting part 32 is threadedly connected to the collecting body 2.

[0057] The cap assembly 4 in this embodiment includes a connecting ring 41, a flexible strip 42, and a cap 43. The connecting ring 41 is sleeved at the connection between the collecting section 21 and the threaded section 22 of the collecting body 2. Specifically, a protruding ring can be provided on the collecting section 21, so that the connecting ring 41 is sleeved on the collecting section 21 and limited by the protruding ring, allowing the connecting ring 41 to rotate freely around the collecting body 2 to cooperate with the rotation of the cap 43. The flexible strip 42 is connected to the connecting ring 41, and the cap 43 is disposed at the end of the flexible strip 42. The cap 43 has an internal thread that mates with the threaded section 22, so that the collecting body 2 can be detachably separated from the separating body 3 after collecting the tip of the conduit 1, and sealed and preserved by the cap 43.

[0058] This embodiment overcomes the shortcomings of existing technologies, such as insufficient sealing, cumbersome operation, and poor adaptability, through threaded connection positioning, integrated cap design, and modular expansion. It can achieve safe, efficient, and low-cost standardized catheter tip separation and preservation.

[0059] Example 3:

[0060] This embodiment provides a catheter tip separation and collection device for separating and collecting the tip of catheter 1.

[0061] The difference from Example 1 is that, as Figure 6 As shown, in this embodiment, the positioning part 31 is a trumpet-shaped variable-diameter design, wider at the top and narrower at the bottom, while the connecting part 32 is a constant-diameter design, with a natural transition between the positioning part 31 and the connecting part 32. The opening of the positioning part 31 is set in a trumpet-shaped variable-diameter configuration, such as a gradual transition from an inlet diameter of 12mm to 8mm at the bottom, which facilitates accurate positioning and rapid insertion of the guide tube 1 and reduces contamination. Since the connecting part 32 is a constant-diameter annular design, a blade sliding groove 33 is provided on the connecting part 32 to facilitate the horizontal movement of the blade 51 for cutting.

[0062] Example 4:

[0063] This embodiment provides a catheter tip separation and collection device for separating and collecting the tip of catheter 1.

[0064] The difference from Example 1 is that, as Figure 7 As shown, the blades 51 in this embodiment are all equipped with sharp crescent-shaped cutting edges that facilitate cutting the conduit 1. The arc-shaped tip of the crescent-shaped cutting edge forms a local high-stress zone when it contacts the conduit, reducing the cutting initiation force and making it suitable for elastic conduit materials such as silicone or polyurethane.

[0065] In this embodiment, as Figure 8-9 As shown, the shearing assembly 5 on the separating body 3 can be divided into a first shearing assembly 5a and a second shearing assembly 5b. The first shearing assembly 5a and the second shearing assembly 5b are symmetrically arranged about the center line of the separating body 3 in the circumferential direction. During cutting, the bidirectional force cancels out the lateral torque, which can effectively prevent the guide tube from rotating and deviating. The blades 51 of the first shearing assembly 5a and the second shearing assembly 5b are staggered vertically when cutting the guide tube 1, similar to scissors, to perform progressive layered cutting.

[0066] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A catheter tip detachment and collection device for detaching and collecting the tip of a catheter (1), characterized in that, The catheter tip separation and collection device comprises a collection main body (2) and a separation main body (3) detachably connected with the collection main body (2); the separation main body (3) is axially through and can communicate with a collection cavity of the collection main body (2); An opening of the collection main body (2) is provided with a cap assembly (4) for sealing the opening; The separation main body (3) is provided with a pair of shearing assemblies (5) for separating the catheter (1) tip; each shearing assembly (5) comprises a blade (51) telescopically arranged on the separation main body (3) in the horizontal direction, at least part of the blade (51) is always located in a cavity enclosed by the separation main body (3); an end of the blade (51) located outside the separation main body (3) is connected with a push plate (52), and a spring (53) is connected between the push plate (52) and the outer wall of the separation main body (3).

2. The catheter tip separation and collection device of claim 1, wherein, The collection main body (2) comprises a collection section (21) and a threaded section (22) integrally connected with the collection section (21), and a collection cavity for collecting the catheter (1) tip is formed in the collection section (21).

3. The catheter tip separation and collection device of claim 2, wherein, An inner wall of the separation main body (3) is correspondingly provided with an inner thread matched with the threaded section (22).

4. The catheter tip separation and collection device of claim 2, wherein, The cap assembly (4) comprises a connecting ring (41), a flexible strip (42) and a cap (43); The connecting ring (41) is sleeved at the connection between the collection section (21) and the threaded section (22) of the collection main body (2); the flexible strip (42) is connected with the connecting ring (41); the cap (43) is arranged at an end of the flexible strip (42), and the cap (43) is provided with an inner thread matched with the threaded section (22).

5. The catheter tip separation and collection device of claim 1, wherein, The separation main body (3) comprises a positioning portion (31) and a connecting portion (32) integrally connected with the positioning portion (31), and the connecting portion (32) is threadedly connected with the collection main body (2).

6. A catheter tip separation and collection device according to claim 5, wherein, The positioning portion (31) is designed in a trumpet-shaped variable diameter with the upper part being wide and the lower part being narrow, and the connecting portion (32) is designed in a constant diameter, and the positioning portion (31) and the connecting portion (32) are naturally transitioned.

7. The catheter tip separation and collection device of claim 5, wherein, A blade sliding groove (33) for horizontal movement of the blade (51) is formed on the connecting portion (32).

8. The catheter tip separation and collection device of claim 1, wherein, Each blade (51) is provided with a sharp crescent-shaped blade edge.

9. The catheter tip separation and collection device of claim 1, wherein, The shearing assemblies (5) on the separation main body (3) are divided into a first shearing assembly (5a) and a second shearing assembly (5b); The first shearing assembly (5a) and the second shearing assembly (5b) are symmetrically arranged about the center line of the separation main body (3) in the ring direction of the separation main body (3).

10. The catheter tip separation and collection device of claim 9, wherein, The blades (51) of the first shearing assembly (5a) and the second shearing assembly (5b) are arranged in an up-down staggered manner when shearing the catheter (1).

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