Remaining needle isolation plug separation blade limiting structure

Abstract

The utility model discloses a retaining needle isolation plug separation blade limiting structure, which belongs to the technical field of medical products and comprises a catheter seat, a branch tube and an isolation plug, the catheter seat is fixedly connected with the branch tube and communicated with the branch tube, the isolation plug is arranged in the catheter seat, two socket grooves are formed in the circumferential surface of the catheter seat, and the socket grooves are communicated with the branch tube. The two socket grooves are symmetrically distributed and are communicated with the conduit seat, an opening latch baffle plate is detachably connected in the conduit seat, the opening latch baffle plate is positioned on one side of the isolation plug and corresponds to the two socket grooves, and an extrusion opening is formed in the opening latch baffle plate; according to the utility model, the whole limiting structure can respectively adopt various different structures to be matched to limit the isolation plug, so that the isolation plug can be stabilized in the catheter seat, the sealing effect and the normal use of the remaining needle are effectively prevented from being influenced by the isolation plug which is opened, and the risks of pollution and liquid leakage of the remaining needle are avoided; and the safety threat is caused to a patient using the remaining needle.

Description

Technical Field

[0001] The utility model relates to the technical field of medical products, and more specifically to a retaining plate limiting structure for an isolation plug of an indwelling needle. Background Art

[0002] An indwelling needle, also known as a peripheral venous indwelling needle, intravenous indwelling needle or cannula needle, is an infusion tool. Its core components include a stainless steel puncture guide needle core (hereinafter referred to as the metal needle core) and a soft catheter that can be retained in the blood vessel. When in use, the catheter and the metal needle core are punctured into the blood vessel together. When the catheter has completely entered the blood vessel, the metal needle core is withdrawn, leaving only the soft catheter in the patient's blood vessel for infusion therapy.

[0003] At present, the metal needle core in the indwelling needle passes through the isolation plug and enters the soft catheter. After the metal needle core is pulled out, the isolation plug rebounds by itself, thereby ensuring the sealing and isolation effect of the indwelling needle. The existing isolation plug is fixed in the indwelling needle catheter seat by dispensing glue. First, a through hole needs to be opened on the indwelling needle catheter seat, and then glue is dispensed into the through hole. After the glue solidifies, the isolation plug and the indwelling needle catheter seat are fixed. However, when medical staff perform high-pressure injection through the indwelling needle, the isolation plug is easily stretched due to the high pressure during high-pressure injection, resulting in debonding or even breaking between the isolation plug and the glue solidified by dispensing glue, which will affect the sealing effect and normal use of the indwelling needle, making the indwelling needle prone to contamination and leakage, posing a safety hazard to patients using indwelling needles. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a retaining needle isolation plug baffle limiting structure, aiming to solve the problem in the prior art that when medical staff perform high-pressure injection through an indwelling needle, the isolation plug is easily stretched open due to the high pressure during high-pressure injection, resulting in debonding or even breakage between the isolation plug and the glue solidified by dispensing, thereby affecting the sealing effect and normal use of the indwelling needle, making the indwelling needle prone to contamination and leakage, and posing a safety hazard to patients using the indwelling needle.

[0006] 2. Technical solution

[0007] In order to solve the above problems, the utility model adopts the following technical solutions:

[0008] The indwelling needle isolation plug baffle limiting structure comprises a catheter seat, a branch tube and an isolation plug, wherein the catheter seat is fixedly connected to the branch tube, and the catheter seat and the branch tube are communicated with each other, the isolation plug is arranged in the catheter seat, and two socket grooves are cut on the circumferential surface of the catheter seat, and the two socket grooves are symmetrically distributed and communicated with the catheter seat, an open latch baffle is detachably connected in the catheter seat, and the open latch baffle is located on one side of the isolation plug corresponding to the two socket grooves, and an extrusion port is provided on the open latch baffle.

[0009] As a preferred solution of the utility model, a baffle groove is cut on the circumferential inner wall of the catheter seat, and an annular latch baffle is detachably connected in the baffle groove, and the annular latch baffle corresponds to one end of the isolation plug.

[0010] As a preferred solution of the utility model, the circumferential inner wall of the catheter seat is fixedly connected to a limiting convex rib, and a limiting tooth baffle is detachably connected inside the catheter seat, and the limiting tooth baffle is located at one end of the isolation plug corresponding to the limiting convex rib.

[0011] As a preferred solution of the present invention, the catheter seat and the branch pipe are made of an integrated transparent material.

[0012] 3. Beneficial effects

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] (1) In this solution, the open latch block and the socket groove cooperate to block the isolation plug, the annular latch block and the block groove cooperate to block the isolation plug, the limiting latch block and the limiting rib cooperate to block the isolation plug, and the entire limiting structure fixes the isolation plug through different latch blocks and limiting components. A variety of different structures can be used to limit the isolation plug, so that the isolation plug can be stabilized in the catheter seat, effectively preventing the isolation plug from being stretched to affect the sealing effect and normal use of the indwelling needle, avoiding the risk of contamination and leakage of the indwelling needle, and posing a safety threat to patients using the indwelling needle.

[0015] (2) In this solution, various types of latching teeth baffles increase friction through the latching teeth on the outer surface, which can improve the stability after installation and ensure its own stability, thereby improving the stability of the isolation plug in the catheter seat and effectively reducing the risk of the isolation plug being stretched open. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of Embodiment 1 of the present utility model;

[0017] Figure 2 This is an exploded view of Example 1 of the utility model;

[0018] Figure 3It is a cross-sectional view of Example 1 of the utility model;

[0019] Figure 4 It is a side view of embodiment 1 of the utility model;

[0020] Figure 5 It is a cross-sectional view of the catheter seat in Example 1 of the utility model;

[0021] Figure 6 This is an exploded view of Example 2 of the utility model;

[0022] Figure 7 It is a cross-sectional view of Example 2 of the utility model;

[0023] Figure 8 It is a side view of embodiment 2 of the utility model;

[0024] Fig. 9 It is a cross-sectional view of the catheter seat in Example 2 of the utility model;

[0025] Fig.10 This is a front view of Embodiment 3 of the present utility model;

[0026] Fig.11 It is a cross-sectional view of Embodiment 3 of the present utility model;

[0027] Fig.12 It is a side view of embodiment 3 of the utility model;

[0028] Fig.13 It is a cross-sectional view of the catheter seat in Example 3 of the present utility model.

[0029] Description of the numbers in the figure:

[0030] 1. catheter seat; 2. branch pipe; 3. isolation plug; 4a. socket slot; 4b. baffle slot; 4c. limiting convex rib; 5a. opening latch baffle; 51a. extrusion port; 5b. annular latch baffle; 5c. limiting latch baffle. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] 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.

[0033] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] Embodiment 1:

[0035] See also Figure 1-5 The indwelling needle isolation plug baffle limiting structure includes a catheter seat 1, a branch pipe 2 and an isolation plug 3. The catheter seat 1 is fixedly connected to the branch pipe 2, and the catheter seat 1 and the branch pipe 2 are connected. The isolation plug 3 is arranged in the catheter seat 1. Two socket grooves 4a are cut on the circumferential surface of the catheter seat 1, and the two socket grooves 4a are symmetrically distributed and connected to the catheter seat 1. An open card tooth baffle 5a is detachably connected in the catheter seat 1, and the open card tooth baffle 5a is located on one side of the isolation plug 3 and corresponds to the two socket grooves 4a. An extrusion port 51a is opened on the open card tooth baffle 5a.

[0036] In this embodiment, the open-grip blocking piece 5a can be squeezed and shrunk through the extrusion port 51a, and is placed into the catheter seat 1 through the two 4 to correspond to the isolation plug 3. After entering the catheter seat 1, the open-grip blocking piece 5a rebounds through its own elasticity, so that the surface of the blocking piece contacts the inner wall of the catheter seat 1, thereby being clamped in the catheter seat 1 to restrict the isolation plug 3, so that the isolation plug 3 remains stable, and the indwelling needle is prevented from stretching the isolation plug 3 during high-pressure injection;

[0037] Among them, when high-pressure injection is required through the indwelling needle, the pressure generated during the injection will squeeze the isolation plug 3. Through the engagement of the opening latch baffle 5a and the socket groove 4a, the opening latch baffle 5a is stably installed in the catheter seat 1 to block the isolation plug 3, preventing the isolation plug 3 from moving and affecting the sealing of the catheter seat 1.

[0038] Embodiment 2:

[0039] See also Figure 6-9 The indwelling needle isolation plug baffle limiting structure includes a catheter seat 1, a branch pipe 2 and an isolation plug 3. The catheter seat 1 is fixedly connected to the branch pipe 2, and the catheter seat 1 and the branch pipe 2 are connected. The isolation plug 3 is arranged in the catheter seat 1. The circumferential inner wall of the catheter seat 1 is opened with a baffle groove 4b, and an annular tooth baffle 5b is detachably connected in the baffle groove 4b, and the annular tooth baffle 5b corresponds to one end of the isolation plug 3.

[0040] In this embodiment, the annular latching tooth baffle 5b is latched in the catheter seat 1 through the baffle groove 4b, and the latching teeth of the annular latching tooth baffle 5b are in contact with the inner wall of the baffle groove 4b to keep fixed, and the baffle groove 4b restricts the annular latching tooth baffle 5b, so that the isolation plug 3 is stabilized in the catheter seat 1, thereby preventing the isolation plug 3 from being stretched open during high-pressure injection of the indwelling needle;

[0041] Among them, when high-pressure injection is required through an indwelling needle, the pressure generated during the injection will squeeze the isolation plug 3. Through the contact and engagement between the annular latching tooth baffle 5b and the inner wall of the baffle groove 4b, the annular latching tooth baffle 5b is stabilized in the baffle groove 4b to block the isolation plug 3, preventing the isolation plug 3 from moving and affecting the sealing of the catheter seat 1.

[0042] Embodiment 3:

[0043] See also Figure 10-13 The indwelling needle isolation plug baffle limiting structure includes a catheter seat 1, a branch tube 2 and an isolation plug 3. The catheter seat 1 is fixedly connected to the branch tube 2, and the catheter seat 1 and the branch tube 2 are connected. The isolation plug 3 is arranged in the catheter seat 1. The circumferential inner wall of the catheter seat 1 is fixedly connected to a limiting convex rib 4c. The catheter seat 1 is detachably connected to a limiting tooth baffle 5c, and the limiting tooth baffle 5c is located at one end of the isolation plug 3 corresponding to the limiting convex rib 4c.

[0044] In this embodiment, the limiting latch tooth baffle 5c is installed in the catheter seat 1, and the friction is increased by the contact between the latch teeth and the inner wall of the catheter seat 1 to maintain stability. The limiting convex rib 4c limits the limiting latch tooth baffle 5c, so that the limiting latch tooth baffle 5c can stably block and limit the isolation plug 3, so that the isolation plug 3 is stabilized in the catheter seat 1, thereby preventing the isolation plug 3 from being stretched open during high-pressure injection of the indwelling needle;

[0045] Among them, when high-pressure injection is required through the indwelling needle, the pressure generated during the injection will squeeze the isolation plug 3. Through the limitation of the limiting rib 4c on the limiting tooth baffle 5c, the limiting tooth baffle 5c can be stably clamped in the catheter seat 1 to block the isolation plug 3, preventing the isolation plug 3 from moving and affecting the sealing of the catheter seat 1.

[0046] Specifically, the catheter seat 1 and the branch pipe 2 are made of an integrated transparent material.

[0047] In this embodiment, the catheter seat 1 and the branch tube 2 are made of transparent material to facilitate medical staff to observe the internal state of the indwelling needle during work and prevent operational errors.

[0048] In any of the above embodiments, it should be noted that: the soft catheter is fixedly connected to the catheter seat 1, the branch pipe 2 is used to connect the joint hose, the isolation plug 3 is installed in the catheter seat 1, the metal needle core penetrates the isolation plug 3 and enters the soft catheter, and after the metal needle core is pulled out, the isolation plug 3 rebounds to ensure the sealing of the catheter seat 1.

[0049] 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 substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and improved concept of the present invention, which should be included in the protection scope of the present invention.

Claims

1. An indwelling needle isolation plug baffle limiting structure, comprising a catheter seat (1), a branch tube (2) and an isolation plug (3), characterized in that: The catheter seat (1) and the branch pipe (2) are fixedly connected, and the catheter seat (1) and the branch pipe (2) are connected. The isolation plug (3) is arranged in the catheter seat (1). Two socket grooves (4a) are cut on the circumferential surface of the catheter seat (1), and the two socket grooves (4a) are symmetrically distributed and connected to the catheter seat (1). An open tooth baffle (5a) is detachably connected in the catheter seat (1), and the open tooth baffle (5a) is located on one side of the isolation plug (3) corresponding to the two socket grooves (4a), and an extrusion port (51a) is provided on the open tooth baffle (5a).

2. The retaining plate limiting structure of the indwelling needle isolation plug according to claim 1 is characterized in that: A baffle groove (4b) is bored on the circumferential inner wall of the catheter seat (1), an annular latching baffle (5b) is detachably connected in the baffle groove (4b), and the annular latching baffle (5b) corresponds to one end of the isolation plug (3).

3. The retaining plate limiting structure of the indwelling needle isolation plug according to claim 1 is characterized in that: The circumferential inner wall of the catheter seat (1) is fixedly connected to a limiting convex rib (4c), and a limiting latching tooth baffle (5c) is detachably connected inside the catheter seat (1), and the limiting latching tooth baffle (5c) is located at one end of the isolation plug (3) corresponding to the limiting convex rib (4c).

4. The retaining plate limiting structure of the indwelling needle isolation plug according to any one of claims 1 to 3, characterized in that: The catheter seat (1) and the branch pipe (2) are made of an integrated transparent material.

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