Disposable arteriovenous indwelling needle

Abstract

The utility model provides a disposable arteriovenous indwelling needle, relates to the technical field of indwelling needles, and aims to solve the problem that when an existing indwelling needle is used, an extended hose capable of saving 10 cm is usually arranged at the outer end, so that the invasive blood pressure monitoring accuracy is influenced. The mounting assembly comprises a main body and an isolation plug, and the interior of the main body is hollow; and the isolation plug is mounted at the upper end in the main body. During use, the bottom of the positive-pressure infusion head is inserted into the side pipe, the positive-pressure infusion head is in contact with the top ring, the side block slides along the fixing groove, after the side block moves to the bottom side of the fixing groove, the positive-pressure infusion head is rotated by 90 degrees, the side block is clamped to the tail end of the fixing groove, and therefore the top ring can abut against and fix the positive-pressure infusion head in the side pipe; therefore, the positive pressure infusion head can be mounted without an extended hose.

Description

Technical Field

[0001] The utility model belongs to the technical field of indwelling needles, and more specifically relates to a disposable arteriovenous indwelling needle. Background Art

[0002] An intravenous catheter, also known as an intravenous cannula, has core components including a soft catheter / cannula that can be placed in a blood vessel, and a stainless steel puncture guide needle core. When in use, the catheter and the needle core are inserted into the blood vessel together. After the catheter has completely entered the blood vessel, the needle core is withdrawn, leaving only the soft catheter in the blood vessel for infusion therapy. Based on existing technology, it has been found that existing intravenous catheters have some shortcomings. First, each model of intravenous catheter can only correspond to one infusion hose, and cannot be adapted to children or adults at the same time, which results in poor practicality of the intravenous catheter; secondly, when the intravenous needle is in use, an extension hose of about 10 cm is usually set at the outer end, which will affect the accuracy of invasive blood pressure monitoring. Utility Model Content

[0003] In response to the above-mentioned technical problems, the present invention relates to a disposable arteriovenous catheter to solve some shortcomings of existing venous catheters. First, each model of catheter can only correspond to one infusion hose and cannot be adapted to children or adults at the same time, which leads to poor practicality of the catheter; secondly, when the catheter is in use, an extension hose of about 10 cm is usually provided at the outer end, which affects the accuracy of invasive blood pressure monitoring.

[0004] In a first aspect of the present disclosure, a disposable arteriovenous indwelling needle is provided, which is achieved by the following specific technical means:

[0005] Disposable arteriovenous catheter, including:

[0006] Installation assembly; the installation assembly includes a main body and an isolation plug, the interior of the main body is hollow; the isolation plug is installed at the upper end of the interior of the main body; the installation assembly is provided with an external assembly, the positive pressure infusion head of the external assembly is inserted into the side tube at the outer end of the main body, and the end of the positive pressure infusion head is against the top ring in the side tube, and the side block at the outer end of the positive pressure infusion head slides in conjunction with the fixed groove in the side tube.

[0007] According to some solutions of the present invention, the installation assembly includes: a side tube, a top ring and a fixing groove; the side tube is opened at the external side end of the main body, and the side tube is connected to the interior of the main body; the top ring is slidably installed at the interface of the side tube through an elastic member, and the top ring is fixed to the end of the elastic member; the fixing groove is opened on both sides of the inner wall of the side tube interface.

[0008] According to some solutions of the present invention, the installation assembly includes: a flip member and a stopper; the flip member is rotatably installed on both sides of the bottom of the main body; and the stopper is provided at the outer end of the flip member.

[0009] According to some schemes of the present invention, the installation assembly includes: a steel needle and a needle holding handle; the steel needle is inserted into the interior of the main body, and the steel needle extends from the bottom of the main body through the isolation plug, and the steel needle passes through two sets of flip parts; the needle holding handle is fixedly installed on the top of the steel needle, and the needle holding handle is inserted into the upper end of the main body.

[0010] According to some schemes of the present utility model, the installation assembly includes: a soft catheter, a needle cap and a locking ring; the soft catheter is installed at the bottom of the main body, and the soft catheter is connected to the interior of the main body, the soft catheter is clamped by two groups of flip parts, and the soft catheter is penetrated by a steel needle; the needle cap is inserted into the bottom of the two groups of flip parts, and the needle cap covers the outer ends of the soft catheter and the steel needle; the locking ring is slidably installed on the outer bottom side of the main body through an elastic member, and the locking ring is sleeved on the outer ends of the two groups of flip parts, and the bottom of the locking ring contacts the stopper at the outer end of the flip part.

[0011] According to some solutions of the present invention, the external component includes: a positive pressure infusion head and side blocks; the positive pressure infusion head has a cylindrical structure; the side blocks are fixedly installed at both ends of the bottom side of the positive pressure infusion head.

[0012] According to some solutions of the present invention, the external components include: fixed needle wings and a positive pressure valve; the fixed needle wings are symmetrically arranged on both sides of the outside of the positive pressure infusion head; and the positive pressure valve is assembled at the end of the positive pressure infusion head.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. In this device, an installation mechanism is provided. Two sets of flip parts are rotatably installed at the bottom of the main body, and a locking ring is slidably installed at the lower end of the main body through an elastic member. When in use, the locking ring is pulled to the upper end, and then the two sets of flip parts are turned over, and a soft catheter of appropriate caliber is placed at the bottom of the main body. Then, the flip part is rotated to clamp the soft catheter, and the locking ring is moved downward to clamp the flip part. In this way, the appropriate soft catheter can be replaced according to the needs of use, so that the device can be adapted to children or adults.

[0015] 2. In this device, an installation mechanism and an external component are provided. A side tube is provided at the outer end of the main body, and a top ring is slidably installed inside the side tube through an elastic member. When in use, the bottom of the positive pressure infusion head is inserted into the side tube, the positive pressure infusion head is brought into contact with the top ring, and the side block is slid along the fixed groove. When the side block moves to the bottom side of the fixed groove, the positive pressure infusion head is rotated ninety degrees so that the side block is engaged with the end of the fixed groove. In this way, the top ring can tighten and fix the positive pressure infusion head in the side tube, thereby eliminating the need for an extension hose to complete the installation of the positive pressure infusion head. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Through the following drawings, those skilled in the art will have a better understanding of the present disclosure and will be able to more clearly reflect the advantages of the present disclosure. The drawings described here are only for illustrative purposes of selected embodiments, not all possible implementation methods and are not intended to limit the scope of the present disclosure.

[0017] In the attached figure:

[0018] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0019] Figure 2 It is a schematic diagram of the exploded structure of the present utility model.

[0020] Figure 3 It is a schematic diagram of the bottom cross-sectional structure of the utility model.

[0021] Figure 4 It is a schematic diagram of the internal structure of the utility model.

[0022] Figure 5 It is a schematic diagram of the internal structure of the side end of the utility model.

[0023] Figure 6 It is a schematic diagram of the connection structure of the installation component and the external component of the utility model.

[0024] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:

[0025] 1. Install components;

[0026] 101. Main body; 1011. Isolation plug;

[0027] 102, side tube; 1021, top ring; 1022, fixing groove;

[0028] 103. Flipping member; 1031. Stopper;

[0029] 104, steel needle; 1041, needle handle;

[0030] 105. Soft catheter; 106. Needle cap; 107. Locking ring;

[0031] 2. External components;

[0032] 201, positive pressure infusion head; 2011, lateral mass;

[0033] 202. Fixed needle wing; 203. Positive pressure valve. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example 1: As shown in the attached Figure 1 To the attached Figure 6 As shown:

[0036] The utility model provides a disposable arteriovenous indwelling needle, comprising: a mounting assembly 1; the mounting assembly 1 comprises a main body 101 and an isolation plug 1011, the interior of the main body 101 is hollow; the isolation plug 1011 is installed at the upper end of the interior of the main body 101; an external assembly 2 is provided on the mounting assembly 1, a positive pressure infusion head 201 of the external assembly 2 is inserted into the side tube 102 at the outer end of the main body 101, and the end of the positive pressure infusion head 201 abuts against the top ring 1021 in the side tube 102, and the side block 2011 at the outer end of the positive pressure infusion head 201 is slidably matched with the fixing groove 1022 in the side tube 102.

[0037] As the second embodiment of the present application, based on the first embodiment, Figures 3 to 6As shown, the installation component 1 includes: a side tube 102, a top ring 1021 and a fixing groove 1022; the side tube 102 is opened at the outer side end of the main body 101, and the side tube 102 is connected to the interior of the main body 101; the top ring 1021 is slidably installed at the interface of the side tube 102 through an elastic member, and the top ring 1021 is fixed to the end of the elastic member; the fixing groove 1022 is opened on both sides of the inner wall of the interface of the side tube 102; a flip member 103 and a stopper 1031; the flip member 103 is rotatably installed on both sides of the bottom of the main body 101; the stopper 1031 is provided at the outer end of the flip member 103; a steel needle 104 and a needle holding handle 1041; the steel needle 104 is inserted into the interior of the main body 101, and the steel needle 104 extends from the bottom of the main body 101 through the isolation plug 1011, and the steel needle 104 passes through the two sets of flip members 103; the needle holding handle 1041 is fixedly installed on the top of the steel needle 104, and the needle holding handle 1041 is plugged into the upper end of the main body 101; soft catheter 105, needle cap 106 and locking ring 107; the soft catheter 105 is installed at the bottom of the main body 101, and the soft catheter 105 is connected to the interior of the main body 101, the soft catheter 105 is clamped by two sets of flip parts 103, and the soft catheter 105 is penetrated by the steel needle 104; the needle cap 106 is plugged into the bottom of the two sets of flip parts 103, and the needle cap 106 covers the outer ends of the soft catheter 105 and the steel needle 104; the locking ring 107 is slidably installed on the outer bottom side of the main body 101 through an elastic member, and the locking ring 107 is sleeved on the outer ends of the two sets of flip parts 103, and the bottom of the locking ring 107 is in contact with the stop block 1031 at the outer end of the flip part 103.

[0038] The present application provides a side tube 102, which can be used to install a positive pressure infusion head 201 at the outer end of the main body 101 through the side tube 102; provides a top ring 1021, which can be used to press the top ring 1021 against the positive pressure infusion head 201, so that the side block 2011 can be pressed against the fixing groove 1022; provides an L-shaped fixing groove 1022, which can be used to fix the positive pressure infusion head 201 to the side tube 102 by sliding the side block 2011 to the end of the fixing groove 1022; provides a flip piece 103, which can be used to clamp and fix the soft catheter 105 by splicing two sets of flip pieces 103; provides a spherical stopper 1031, which can be used to lock the locking ring 107 on the flip piece 103. The outer end is limited by sliding; a steel needle 104 is provided, and the patient's vein can be punctured with the help of the steel needle 104; a needle holding handle 1041 is provided, and the steel needle 104 can be taken by the needle holding handle 1041; a soft catheter 105 is provided, and the soft catheter 105 can be used for infusion by retaining it in the patient's body; a needle cap 106 is provided, and the needle cap 106 is put on the outer end of the soft catheter 105 to protect it; a circular locking ring 107 is provided, and the two groups of flip parts 103 can be limited by sliding the locking ring 107 to the outer ends of the two groups of flip parts 103, thereby preventing them from flipping at the bottom of the main body 101.

[0039] As the third embodiment of the present application, based on the first embodiment, Figure 4 and 6 As shown, the external component 2 includes: a positive pressure infusion head 201 and a side block 2011; the positive pressure infusion head 201 is a cylindrical structure; the side block 2011 is fixedly installed at both ends of the bottom side of the positive pressure infusion head 201; fixed needle wings 202 and a positive pressure valve 203; the fixed needle wings 202 are symmetrically arranged on both sides of the outside of the positive pressure infusion head 201; the positive pressure valve 203 is assembled at the end of the positive pressure infusion head 201.

[0040] A positive pressure infusion head 201 is provided, through which infusion can be carried out into the interior of the main body 101; a side block 2011 is provided, and the positive pressure infusion head 201 can be fixed on the main body 101 by sliding the side block 2011 to the end of the fixing groove 1022; a plate-shaped fixed needle wing 202 is provided, and the external component 2 can be fixed by the fixed needle wing 202; a positive pressure valve 203 is provided, and the closing of the positive pressure infusion head 201 can be controlled by the positive pressure valve 203.

[0041] The specific usage and function of this embodiment are as follows:

[0042] In the present utility model, Figure 1-6 As shown, two sets of flip parts 103 are rotated and installed at the bottom of the main body 101, and the flip parts 103 are turned outward. Then, the soft catheter 105 is installed to the bottom of the main body 101, and the soft catheter 105 is clamped by rotating the flip parts 103. After clamping the soft catheter 105, the locking ring 107 at the bottom of the main body 101 is slid downward so that the locking ring 107 fixes the two sets of flip parts 103, and the steel needle 104 passes through the isolation plug 1011, extends from the lower end of the main body 101, and extends from the soft catheter 105. A side tube 102 is set at one end of the main body 101, and the bottom side of the positive pressure infusion head 201 is inserted into the interior of the side tube 102. After inserting to the deepest point, the positive pressure infusion head 201 is rotated 90°, and the top ring 1021 pushes the positive pressure infusion head 201 to tighten the side block 2011 in the fixing groove 1022. After assembly, venous puncture can be performed through this device.

[0043] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the embodiments to the precise form disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of the embodiments.

[0044] Even though particular combinations of features are recited in the claims or disclosed in the specification, these combinations are not intended to limit the disclosure of the various embodiments. In fact, many of these features can be combined in ways not specifically recited in the claims and / or disclosed in the specification. Although each dependent claim listed below may directly depend on only one claim, the disclosure of the various embodiments includes each dependent claim in combination with every other claim in the claim set.

Claims

1. Disposable arteriovenous catheter, including: The mounting assembly (1) comprises a main body (101) and an isolation plug (1011), wherein the interior of the main body (101) is hollow; the isolation plug (1011) is mounted at the upper end of the interior of the main body (101); the mounting assembly (1) is characterized in that an external assembly (2) is provided on the mounting assembly (1), the positive pressure infusion head (201) of the external assembly (2) is plugged into the side tube (102) at the outer end of the main body (101), and the end of the positive pressure infusion head (201) is against the top ring (1021) in the side tube (102), and the side block (2011) at the outer end of the positive pressure infusion head (201) is slidably matched with the fixing groove (1022) in the side tube (102).

2. The disposable arteriovenous indwelling needle according to claim 1, characterized in that: The mounting assembly (1) comprises: a side tube (102), a top ring (1021) and a fixing groove (1022); the side tube (102) is provided at the outer side end of the main body (101), and the side tube (102) is communicated with the interior of the main body (101); the top ring (1021) is slidably mounted at the interface of the side tube (102) via an elastic member, and the top ring (1021) is fixed to the end of the elastic member; the fixing groove (1022) is provided on both sides of the inner wall of the interface of the side tube (102).

3. The disposable arteriovenous indwelling needle according to claim 1, characterized in that: The mounting assembly (1) comprises: a flip member (103) and a stopper (1031); the flip member (103) is rotatably mounted on both sides of the bottom of the main body (101); and the stopper (1031) is provided at the outer end of the flip member (103).

4. The disposable arteriovenous indwelling needle according to claim 3, characterized in that: The mounting assembly (1) comprises: a steel needle (104) and a needle holding handle (1041); the steel needle (104) is inserted into the interior of the main body (101), and the steel needle (104) passes through the isolation plug (1011) and extends from the bottom of the main body (101), and the steel needle (104) passes through the two sets of flip parts (103); the needle holding handle (1041) is fixedly installed on the top of the steel needle (104), and the needle holding handle (1041) is plugged into the upper end of the main body (101).

5. The disposable arteriovenous indwelling needle according to claim 4, characterized in that: The mounting assembly (1) comprises: a soft catheter (105), a needle cap (106) and a locking ring (107); the soft catheter (105) is mounted on the bottom of the main body (101), and the soft catheter (105) is connected to the interior of the main body (101), the soft catheter (105) is clamped by two groups of flip members (103), and the soft catheter (105) is penetrated by the steel needle (104); the needle cap (106) is plugged into the bottom of the two groups of flip members (103), and the needle cap (106) covers the outer ends of the soft catheter (105) and the steel needle (104); the locking ring (107) is slidably mounted on the outer bottom side of the main body (101) through an elastic member, and the locking ring (107) is sleeved on the outer ends of the two groups of flip members (103), and the bottom of the locking ring (107) contacts the stopper (1031) at the outer end of the flip member (103).

6. The disposable arteriovenous indwelling needle according to claim 1, characterized in that: The external component (2) comprises: a positive pressure infusion head (201) and side blocks (2011); the positive pressure infusion head (201) is a cylindrical structure; and the side blocks (2011) are fixedly mounted on both ends of the bottom side of the positive pressure infusion head (201).

7. The disposable arteriovenous indwelling needle according to claim 6, characterized in that: The external component (2) comprises: a fixed needle wing (202) and a positive pressure valve (203); the fixed needle wing (202) is symmetrically arranged on both sides of the outside of the positive pressure infusion head (201); and the positive pressure valve (203) is assembled at the end of the positive pressure infusion head (201).

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