Straight indwelling needle capable of preventing blood dripping

Abstract

The utility model relates to the technical field of medical instruments, in particular to an anti-blood-dripping straight indwelling needle which comprises an indwelling catheter, a needle seat is fixed to the bottom of the indwelling catheter, fins are fixed to the two sides of the needle seat, a needle core is inserted into the indwelling catheter and the needle seat, and a detachable flow stopping assembly is installed at the position, located on the outer side of the needle core, in the needle seat. The interiors of the flow stopping assemblies are mutually extruded for stopping blood flow; the flow stopping assembly comprises a shell connected to the inner side of the needle base in a sleeving mode. The upper portion and the lower portion of the inner side of the shell are each provided with an elastic piece, and the ends of the elastic pieces extrude each other. When indwelling succeeds, after the needle core is withdrawn, blood flows into the needle base, a closed state is formed through mutual extrusion in the flow stopping assembly, the blood does not flow any more, the flow stopping effect is achieved, only the mutual extrusion structure is adopted, the structure is simple, the production cost is low, and application and popularization are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a straight indwelling needle that prevents blood from dripping. 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 a metal needle core) and a soft catheter that can be indwelled in a blood vessel. When in use, the catheter and the metal needle core are punctured into the blood vessel together. When the catheter is completely in the blood vessel, the metal needle core is withdrawn, and only the soft catheter is indwelled in the patient's blood vessel for infusion therapy.

[0003] When the indwelling is successful, the needle core needs to be withdrawn, and blood is particularly likely to flow out during the withdrawal. The existing technology uses an overly complex flow-stopping structure, which increases the cost of use. Utility Model Content

[0004] In view of the above or existing technologies that when indwelling is successful, the needle core needs to be withdrawn, and blood is particularly likely to flow out during withdrawal, and the existing technology uses an overly complex flow-stopping structure, which increases the cost of use, the present utility model is proposed.

[0005] Therefore, the purpose of the utility model is to provide a straight indwelling needle that prevents blood from dripping.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a straight indwelling needle that prevents blood dripping, comprising an indwelling catheter, a needle seat is fixed to the bottom of the indwelling catheter, wings are fixed on both sides of the needle seat, a needle core is inserted in the indwelling catheter and the needle seat, and a detachable flow-stopping component is installed in the needle seat at the outer side of the needle core, and the interior of the flow-stopping component is squeezed against each other to stop the flow of blood.

[0007] As a preferred solution of the utility model of the straight blood-drip-proof indwelling needle, the flow-stopping assembly includes a shell sleeved on the inner side of the needle seat, and the upper and lower parts of the inner side of the shell are provided with elastic sheets whose ends are pressed against each other.

[0008] As a preferred solution of the blood-drip-proof straight indwelling needle of the utility model, the elastic sheets form a cone shape, and the end of the elastic sheet is close to the position of the indwelling catheter.

[0009] As a preferred solution of the blood-drip-proof straight indwelling needle of the utility model, the flow-stopping component further comprises an elastic stopper arranged in the middle of the inner side of the shell, and the elastic stoppers are arranged in pairs and staggeredly distributed.

[0010] As a preferred solution of the blood-drip-proof straight indwelling needle of the utility model, the elastic block is in the shape of a water drop, the paired elastic blocks are inclined upward, and the vertical lines where the ends of the paired elastic blocks are located coincide with each other.

[0011] As a preferred solution of the utility model of the straight blood-drip-proof indwelling needle, the tip of the elastic stopper faces upward.

[0012] The beneficial effects of the blood-dripping anti-straight indwelling needle of the utility model are as follows: when the indwelling is successful, after the needle core is withdrawn, the blood flows into the needle seat, and a closed state is formed by the mutual squeezing inside the flow-stopping component, so that the blood no longer flows, thereby achieving the effect of stopping the flow. It is just a structure of mutual squeezing, the structure is simple, the production cost is low, and it is conducive to popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 The figure is a schematic diagram of the structure of a straight indwelling needle that prevents blood dripping.

[0015] Figure 2 The present invention is a cross-sectional view of a blood-drip-proof straight indwelling needle seat.

[0016] Figure 3 It is a structural schematic diagram of a blood-dripping-proof straight indwelling needle flow-stopping component.

[0017] Label:

[0018] Indwelling catheter 100 , needle seat 200 , wing 300 , needle core 400 , flow stop assembly 500 , housing 501 , elastic sheet 502 , elastic stop block 503 . DETAILED DESCRIPTION

[0019] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0022] Reference Figure 1-3 This embodiment provides a blood-drip-proof straight indwelling needle, including an indwelling catheter 100, a needle seat 200 is fixed at the bottom of the indwelling catheter 100, wings 300 are fixed on both sides of the needle seat 200, a needle core 400 is inserted into the indwelling catheter 100 and the needle seat 200, the needle core 400 is made of stainless steel, and a detachable flow-stopping component 500 is installed at the outer side of the needle core 400 in the needle seat 200, and the inside of the flow-stopping component 500 is squeezed against each other to stop the flow of blood.

[0023] During use, when indwelling is successful, the left hand presses the blood vessel above the indwelling catheter 100, and the right hand withdraws the needle core 400, and the blood will flow from the indwelling catheter 100 into the needle seat 200, and a closed state is formed through the mutual squeezing inside the flow-stopping component 500, so that the blood no longer flows, achieving the effect of stopping the flow.

[0024] Furthermore, the flow-stop assembly 500 includes a shell 501 sleeved on the inner side of the needle seat 200 , and the upper and lower parts of the inner side of the shell 501 are both provided with elastic sheets 502 whose ends are pressed against each other, and the elastic sheets 502 are made of medical materials.

[0025] During use, when the needle core 400 is withdrawn, the elastic sheets 502 are elastically restored to a mutually squeezed state, forming a closure, thereby stopping the blood flow.

[0026] Furthermore, the elastic sheets 502 form a cone shape, and the end of the elastic sheet 502 is close to the position of the indwelling catheter 100, so that the needle core 400 can be easily inserted during installation, and when blood flows, the tip increases the strength to resist blood flow.

[0027] Furthermore, the flow stop assembly 500 also includes an elastic stopper 503 arranged in the middle of the inner side of the outer shell 501, the elastic stopper 503 is made of medical material, and the elastic stopper 503 is arranged in pairs and staggered; the elastic stopper 503 has a teardrop shape, and the paired elastic stoppers 503 are all inclined upward, and the vertical lines where the ends of the paired elastic stoppers 503 coincide; the tip of the elastic stopper 503 is facing upward.

[0028] During use, when blood passes through the elastic sheet 502, it is blocked by the elastic stoppers 503 that are staggered in pairs, thereby further achieving the effect of stopping the blood flow.

[0029] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0030] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0031] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0032] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A blood-drip-proof straight indwelling needle, characterized in that: The invention comprises an indwelling catheter (100), a needle seat (200) being fixed at the bottom of the indwelling catheter (100), wings (300) being fixed on both sides of the needle seat (200), a needle core (400) being inserted into the indwelling catheter (100) and the needle seat (200), a detachable flow-stopping component (500) being installed in the needle seat (200) at a position outside the needle core (400), and the inside of the flow-stopping component (500) is mutually squeezed to stop the flow of blood; The flow-stop assembly (500) comprises a shell (501) sleeved on the inner side of the needle seat (200), and the upper and lower parts of the inner side of the shell (501) are both provided with elastic sheets (502) whose ends are pressed against each other.

2. The anti-drip blood straight indwelling needle according to claim 1, characterized in that: The elastic sheets (502) form a cone shape, and the end of the elastic sheet (502) is close to the position of the indwelling catheter (100).

3. The anti-drip blood straight indwelling needle according to claim 1, characterized in that: The flow-stop assembly (500) further comprises an elastic stopper (503) arranged in the middle of the inner side of the housing (501); the elastic stoppers (503) are arranged in pairs and are staggered.

4. The anti-drip blood straight indwelling needle according to claim 3, characterized in that: The elastic stoppers (503) are in the shape of a water drop, and the paired elastic stoppers (503) are both inclined upwards, with the vertical lines where the ends of the paired elastic stoppers (503) are located coincident.

5. The anti-drip blood straight indwelling needle according to claim 4, characterized in that: The tip of the elastic stopper (503) faces upward.

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