CN216495306U

CN216495306U - Safety blood taking needle

Info

Publication number: CN216495306U
Application number: CN202122831521.XU
Authority: CN
Inventors: 李梦荧; 廖兴
Original assignee: Zhejiang Hospital
Current assignee: Zhejiang Hospital
Priority date: 2021-11-18
Filing date: 2021-11-18
Publication date: 2022-05-13
Anticipated expiration: 2031-11-18

Abstract

The utility model discloses a safety blood taking needle which comprises a blood taking needle head, a hose, a connector and a blood taking tube, wherein one end of the hose is connected with the blood taking needle head, the other end of the hose is connected with the connector, the connector is arranged on the blood taking tube, the connector comprises a body, an inner channel is arranged in the middle of the body, a locking head used for fastening the hose and the inner channel is arranged at one end of the body, a bottle inserting needle used for being inserted into the blood taking tube is arranged at the other end of the body, and an exhaust valve used for exhausting air is arranged on the body. The blood sampling valve is reasonable in design and simple in structure, sealing performance is improved, internal air is reduced, the influence of air on blood sampling is reduced, use safety performance is improved, and use requirements can be met.

Description

Safety blood taking needle

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a safety blood taking needle.

Background

Blood lancets are known as devices for taking arterial and venous blood samples. Vacuum blood sampling is a basic method for conventional blood test at present, and the accuracy of blood sampling quantity directly influences clinical test results; the maintenance of the vacuum degree in the blood collection tube is a main reason for determining the accuracy of the blood collection amount. The medical appliance industry focuses on the research on the vacuum degree maintenance of products, improves the materials, the process and the like, and still cannot effectively solve the problem of vacuum degree loss of blood taking needles.

Although a blood taking needle is disclosed in the publication No. CN211300006U, the blood taking needle comprises a bottle insertion needle joint, one side of the bottle insertion needle joint is communicated with an exhaust pipe, a breathable water-stop filter element and a one-way valve are sequentially arranged in the exhaust pipe along the direction from the inner side to the outer side of the bottle insertion needle joint, and the one-way valve is in one-way conduction along the direction from the inner side to the outer side of the bottle insertion needle joint. During blood sampling, insert the blood vessel with the blood sampling syringe needle, insert the bottle needle in the heparin tube, blood can discharge the remaining gas of blood sampling needle hose and bottle needle joint inside to the external world through ventilative stagnant water filter core and check valve before getting into the heparin tube, external gas can not get into inside hose and bottle needle joint and the heparin tube, and simultaneously, ventilative stagnant water filter core can guarantee that blood does not leak outward, this kind uses ventilative stagnant water filter core and check valve combination, the one-way exhaust and the liquid sealing function of product have been realized, the vacuum loss of blood sampling needle has effectively been reduced, the precision of gathering the blood volume has been improved, important contribution has been made for the authenticity of clinical examination result. This kind of bottle inserting needle connects including the interior cone joint and the outer cone joint of mutually supporting, can guarantee to connect sealing performance through the mode of cone joint cooperation, nevertheless can still exist between the interconnect and seal not good, can lead to gaseous entering inside like this to no matter how the product exhausts and all exist inside and have gas, thereby make the security can not obtain the guarantee, consequently, how avoid the influence of air to blood sampling, is the technical problem that technical staff in the field need solve at present.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides the safety blood taking needle which is reasonable in design, simple in structure, more beneficial to improving the sealing performance and reducing the internal air, thereby being beneficial to reducing the influence of the air on blood taking, improving the use safety performance and more meeting the use requirements.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a safe type blood taking needle, includes blood taking needle head, hose, joint and heparin tube, hose one end is connected with the blood taking needle head, the hose other end is connected with the joint, the joint sets up on the heparin tube, the joint includes the body, be provided with the inner channel in the middle of the body, one of body serve be provided with be used for with the hose with the locking head that the inner channel fastens mutually, be provided with on the other end of body and be used for pegging graft the bottle needle of inserting of heparin tube, be provided with on the body and be used for carminative discharge valve.

Preferably, one end of the body is provided with a screw groove, and the locking head is installed on the screw groove.

Preferably, discharge valve is including setting up the check valve body of body one side, the last top cover that is provided with of check valve body, be provided with the top cap on the top cover.

Preferably, the top cover is connected with the top sleeve through a hinge.

Preferably, a breathable water-stopping filter element is arranged inside the top sleeve, and the breathable water-stopping filter element is a medical overflow-stopping filter element.

Preferably, still including setting up outer visor on the body, outer visor with insert the bottle needle and be the coaxial axle center setting, outer visor can be used to the cover in the upper end of heparin tube.

The utility model has the beneficial effects that:

one end of the hose is connected with the blood sampling needle, the other end of the hose is connected with the connector, and the connector is arranged on the blood sampling tube.

Secondly, the connector comprises a body, an inner channel is arranged in the middle of the body, a locking head used for fastening the hose with the inner channel is arranged at one end of the body, and a bottle inserting needle used for being inserted into a blood sampling tube is arranged at the other end of the body.

Thirdly, the exhaust valve for exhausting is arranged on the body, so that internal gas can be exhausted, internal air can be reduced, the influence of air on blood sampling can be reduced, the use safety performance can be improved, and the use requirement can be met.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of a joint structure according to the present invention.

In the figure: 1, a blood sampling needle head; 2, a hose; 3, connecting the joint; 4, blood collection tubes; 31, a body; 32, an inner channel; 33, a locking head; 34, inserting a bottle needle; 35, an exhaust valve; 36, an outer protective cover; 311, a screw groove; 351, a check valve body; 352, a top sleeve; 353, a top cover; 354, a ventilating water-stopping filter element.

Detailed Description

In the description of the present invention, it should be noted that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present invention, it should be noted that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the utility model and not to limit the scope of the utility model. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Referring to fig. 1 and 2, as shown in the figures, a safety blood taking needle comprises a blood taking needle 1, a hose 2, a connector 3 and a blood taking tube 4, wherein one end of the hose 2 is connected with the blood taking needle 1, the other end of the hose 2 is connected with the connector 3, the connector 3 is arranged on the blood taking tube 4, the connector 3 comprises a body 31, an inner channel 32 is arranged in the middle of the body 31, one end of the body 31 is provided with a locking head 33 used for fastening the hose 2 and the inner channel 32, the other end of the body 31 is provided with a bottle inserting needle 34 used for being inserted into the blood taking tube 4, and the body 31 is provided with an exhaust valve 35 used for exhausting air.

Further, as shown in fig. 2, one end of the body 31 is provided with a screw groove 311, a locking head 33 is installed on the screw groove 311, and the locking head 33 is completely and tightly fastened on the screw groove 311, so that there is no excessive gap between the hose 2 and the inner channel 32 of the connector 3, thereby preventing air residue caused by improper operation, and the exhaust valve 35 on the body 31 can exhaust air, when there is air in the blood lancet, the air can be exhausted from the blood lancet by opening the exhaust valve 35, thereby preventing air from entering the blood lancet to form air embolism.

Further, as shown in fig. 2, the exhaust valve 35 includes a one-way valve 351 disposed on one side of the body 31, a top sleeve 352 is disposed on the one-way valve 351, and a top cover 353 is disposed on the top sleeve 352, which is beneficial to protecting the valve 351, and only the top cover 353 needs to be opened when in use. Further, the top sleeve 352 and the one-way valve body 351 can be integrally formed, which is more beneficial to improving the sealing performance and reducing the installation of components. The top cover 353 is movably connected with the top sleeve 352, and particularly, the top cover 353 is connected with the top sleeve 352 through a hinge, so that the top cover 353 is convenient to open and close. It is further to be noted that, the top cover 352 is internally provided with the air-permeable water-stop filter element 354, which facilitates the installation of the air-permeable water-stop filter element 354, reduces the difficulty of installation, and is more beneficial to reducing the production cost, the air-permeable water-stop filter element 354 can be specifically a medical overflow-stop filter element, and is characterized in that the air-permeable water-stop filter element is air-permeable and water-closed, the filter element can be formed by embedding a high molecular elastomer into a porous structure of a PE filter element through a sintering process and sintering, the high molecular elastomer is an expanding agent which expands when meeting water, and blocks liquid and gas in a positive pressure state, but in a negative pressure state, the expanding agent can leave a gap for gas to enable gas to reversely enter, the air-permeable water-stop filter element 354 is combined with the blood sampling tube 4, the blood sampling tube 4 has a negative pressure effect, after the air-permeable water-stop filter element 354 contacts blood, the high molecular elastomer expands and blocks rapidly, and the blood cannot leak through the air-permeable water-stop filter element 354, however, if negative pressure is applied, the air-permeable water-stopping filter element 354 cannot prevent external air from entering the hose 2, the connector 3 and the blood collection tube 4 even if it is blocked, so that the air-permeable water-stopping filter element 354 can be used together with the one-way valve 351 to achieve the function of stopping liquid and not introducing air.

Further, as shown in fig. 2, the blood collection tube further includes an outer protection cover 36 disposed on the body 31, the outer protection cover 36 and the vial insertion needle 34 are coaxially disposed, and the outer protection cover 36 can be used to be sleeved on the upper end portion of the blood collection tube 4, so as to reduce the entrance of external contamination between the vial insertion needle 34 and the blood collection tube 4, and further to ensure the safety and reliability of use. Wherein outer visor 36 passes through threaded connection with body 31, and this kind of mode is favorable to the installation and the dismantlement of body 31 and outer visor 36, can satisfy the user demand more.

The working principle of the utility model is as follows: during the blood sampling, with blood sampling syringe needle 1 insert the blood vessel, will connect 3 to insert in heparin tube 4, can discharge the external world through discharge valve 35 with hose 2 and the inside residual gas of joint 3 before blood gets into heparin tube 4, the blood sampling in-process because discharge valve 35's one-way conduction function for external gas can not get into inside hose 2 and joint 3 and heparin tube 4.

It should be noted that, although the above embodiments have been described herein, the utility model is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed in the content of the present specification and the attached drawings, which are included in the scope of the present patent.

Claims

1. The utility model provides a safe type blood taking needle, includes blood taking needle (1), hose (2), joint (3) and heparin tube (4), hose (2) one end is connected with blood taking needle (1), hose (2) other end is connected with joint (3), joint (3) set up on heparin tube (4), its characterized in that: connect (3) including body (31), be provided with interior passageway (32) in the middle of body (31), one of body (31) is served and is provided with and be used for with hose (2) with locking head (33) that interior passageway (32) fastened mutually, be provided with on the other end of body (31) and be used for pegging graft and be in the bottle inserting needle (34) of heparin tube (4), be provided with on body (31) and be used for carminative discharge valve (35).

2. A safety lancet according to claim 1, wherein: one end of the body (31) is provided with a screw groove (311), and the locking head (33) is installed on the screw groove (311).

3. A safety lancet according to claim 2, wherein: the exhaust valve (35) comprises a one-way valve body (351) arranged on one side of the body (31), a top sleeve (352) is arranged on the one-way valve body (351), and a top cover (353) is arranged on the top sleeve (352).

4. A safety lancet according to claim 3, wherein: the top cover (353) is connected with the top sleeve (352) through a hinge.

5. A safety lancet according to claim 3, wherein: the top sleeve (352) is internally provided with a breathable water-stop filter element (354), and the breathable water-stop filter element (354) is a medical overflow-stop filter element.

6. A safety lancet according to claim 1 or 2 or 3 or 4 or 5, wherein: still including setting up outer visor (36) on body (31), outer visor (36) with insert bottle needle (34) are the coaxial axle center setting, outer visor (36) can be used to the cover the upper end of heparin tube (4).