Blood collector suitable for needleless infusion connector

Abstract

The utility model relates to the technical field of medical instruments, and provides a hemostix suitable for a needleless infusion connector, comprising: a delivery tube, one end of which is provided with a connector, the connector is provided with a connecting hole, and the inner side wall of the delivery tube is provided with a first bolting thread; the needle head body comprises a needle seat and a needle tube which are connected in sequence, a first inserting column communicated with the needle tube is arranged on the needle seat, the first inserting column is used for being connected with the connector in an inserting mode, a second bolting thread is arranged on the outer side wall of the first inserting column, and the first bolting thread is matched with the second bolting thread so that the first inserting column can be connected to the connector in a threaded mode; the vacuum blood collector is detachably connected to the other end of the conveying pipe; a sealing rubber ring is arranged in the connecting hole, a through hole is formed in the sealing rubber ring, the first inserting column is connected with the through hole in a matched mode, and a one-way conduction piece is arranged in the through hole and is in one-way conduction towards the vacuum blood collector. The connector and the needle head body are sealed through the sealing rubber ring and are connected in a threaded mode, and leakage can be effectively prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a blood collector suitable for a needle-free infusion connector. BACKGROUND

[0002] A blood collection needle is a tool widely used in the medical field, mainly used for collecting blood samples. A common blood collection needle is usually composed of a needle, a vacuum blood collector and a delivery tube. The needle is detachably connected to one end of the delivery tube. In use, the needle is first inserted into the delivery tube, and the needle is connected to the vacuum blood collector. Then the needle is inserted into the patient's blood vessel, and the blood flows into the vacuum blood collector through the needle. The needle tip of the blood collection needle is usually very sharp, which can quickly and accurately pierce the skin and blood vessels, reducing the pain and discomfort of the patient.

[0003] This blood collection needle has simple structure, low production cost and simple operation, but requires certain skills and experience to ensure accurate insertion into the blood vessel. However, due to cost constraints, the structure of the common blood collection needle is too simple. In use, the connection between the needle and the vacuum blood collector (between the delivery tube and the needle) is prone to looseness and leakage, affecting the efficiency of blood collection by medical staff.

[0004] Therefore, the above-mentioned technical defects need to be changed. CONTENT OF THE INVENTION

[0005] In view of the above-mentioned deficiencies of the prior art, the purpose of the present application is to provide a blood collector suitable for a needle-free infusion connector, which can prevent the connection between the delivery tube and the needle body from being too tight and avoid leakage affecting the efficiency of blood collection by medical staff.

[0006] The technical solution adopted by the present application to solve the technical problem is as follows: a blood collector suitable for a needle-free infusion connector, comprising:

[0007] a delivery tube, one end of the delivery tube is provided with a connector, the connector is provided with a connecting hole, and a first threaded hole is arranged on the inner side wall of the connecting hole;

[0008] a needle body, the needle body comprises a needle seat and a needle tube connected in sequence, the needle seat is provided with a first plug-in column in communication with the needle tube, the first plug-in column is used for plug-in connection with the connector, a second threaded hole is arranged on the outer side wall of the first plug-in column, and the first threaded hole and the second threaded hole are matched to enable the first plug-in column to be screwed on the connector;

[0009] and a vacuum blood collector, the vacuum blood collector is detachably connected to the other end of the delivery tube;

[0010] The connecting hole is provided with a sealing rubber ring, the sealing rubber ring is provided with a through hole, the first inserting column is matched and connected with the through hole, and the one-way conducting piece is arranged in the through hole and conducts in one direction towards the vacuum blood collector.

[0011] In a possible implementation, steps are arranged at two ends of the connecting hole, and the two ends of the sealing rubber ring abut against the two steps.

[0012] In a possible implementation, a disposable protective film is arranged at one end of the connecting hole close to the first threaded bolt, and the disposable protective film is used for plugging the connecting hole.

[0013] In a possible implementation, a protective tube is arranged on the needle tube and detachably connected to the needle tube.

[0014] In a possible implementation, a container upper cover is detachably connected to one end of the vacuum blood collector connected to the delivery tube, a one-way valve is arranged on the container upper cover, and the one-way valve conducts in one direction towards the inside of the vacuum blood collector.

[0015] In a possible implementation, a second inserting column is arranged at one end of the delivery tube connected to the vacuum blood collector, the second inserting column is used for inserting the one-way valve, and the second inserting column is provided with a circular arc end away from the delivery tube.

[0016] In a possible implementation, the one-way valve is a silica gel valve.

[0017] In a possible implementation, the first inserting column is integrally formed with the needle seat, and the needle seat is provided with a needle wing.

[0018] In a possible implementation, the vacuum blood collector is of a transparent material structure.

[0019] Compared with the prior art, the blood collector suitable for the needleless infusion connector is provided, the connecting head and the needle body are sealed by the sealing rubber ring, and are connected in a threaded mode, so that leakage can be effectively prevented. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0021] Figure 1 is a whole structure schematic view of the blood collector suitable for the needleless infusion connector provided by the present embodiment;

[0022] Figure 2It is an overall structure explosion schematic diagram of a blood collector suitable for a needle-free infusion connector provided by the embodiment;

[0023] Figure 3 It is a sectional view of a connecting head suitable for a needle-free infusion connector provided by the embodiment.

[0024] In the figure: 1, delivery pipe; 11, connecting head; 111, connecting hole; 0111, sealing rubber ring; 0112, through hole; 0113, step; 112, first threaded bolt; 12, second insertion column; 121, protective sleeve; 2, needle body; 21, needle seat; 211, first insertion column; 212, second threaded bolt; 22, needle tube; 23, protective tube; 24, needle wing; 3, vacuum blood collector; 31, container upper cover; 311, one-way valve. DETAILED DESCRIPTION

[0025] The embodiments of the present application are described in detail below with reference to the accompanying drawings. The embodiments described below are exemplary only, and are used only for explaining the present application, and cannot be understood as limiting the present application.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0027] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] Furthermore, the technical features involved in the different embodiments of the present invention described above can be combined with each other as long as they do not conflict with each other.

[0029] This utility model provides, for example Figure 1 , Figure 2 The diagram shows a blood collection device suitable for needleless infusion connectors, used to collect venous and arterial blood samples from patients. Its main structure includes: a delivery tube 1, a needle body 2, and a vacuum blood collection device 3. One end of the delivery tube 1 is equipped with a connector 11, which has a connection hole 111. The inner wall of the connection hole 111 has a first threaded connection 112. The needle body 2 includes a needle seat 21 and a needle tube 22 connected in sequence. The needle tube 22 is used to insert into the patient's blood vessel, and blood flows through the needle tube 22 into the delivery tube 1, and then into the vacuum blood collection tube. Because the vacuum blood collection tube is a vacuum, when the needle body 2, delivery tube 1, and vacuum blood collection device 3 are connected, blood can be drawn into the vacuum blood collection tube. The needle seat 21 is provided with a first insertion post 211 that communicates with the needle tube 22. The first insertion post 211 is integrally formed with the needle seat 21, meaning that the first insertion post 211 and the needle seat 21 are made of the same material. This prevents the first insertion post 211 from accidentally injuring medical personnel. The first plug post 211 is used to plug into the connector 11. A second bolting thread 212 is provided on the outer wall of the first plug post 211. The first bolting thread 112 and the second bolting thread 212 are matched so that the first plug post 211 is screwed onto the connector 11. The vacuum blood collection device 3 is detachably connected to the other end of the delivery tube 1. A sealing ring 0111 is provided in the connection hole 111. The sealing ring 0111 has a through hole 0112. The first plug post 211 is matched and connected to the through hole 0112. A one-way guide is provided in the through hole 0112. The one-way guide leads to the vacuum blood collection device 3 in one direction.

[0030] It is understood that the specific functions of the unidirectional conductor in this embodiment are those that can be obtained by those skilled in the art based on the prior art, and the structure and working principle of the unidirectional conductor will not be described in detail here.

[0031] It should be noted that a typical blood collection needle usually consists of a needle tip, a vacuum blood collection device 3, and a delivery tube 1, with the needle tip detachably connected to one end of the delivery tube 1. This type of blood collection needle has a simple structure, low production cost, and is easy to operate, but requires certain skills and experience to ensure accurate insertion into the blood vessel. However, due to cost constraints, the structure of current ordinary blood collection needles is too simple. During use, the connection between the needle tip and the vacuum blood collection device 3 (between the delivery tube 1 and the needle tip) is prone to loosening and leakage, leading to difficulties in the blood collection process. This, in turn, affects the efficiency of blood collection operations for medical personnel.

[0032] The connecting head 11 is sealed from the needle head body 2 through a sealing rubber ring 0111, and is connected through a screwing mode, so that leakage can be effectively prevented.

[0033] Further, as shown in Figure 2 、 Figure 3 , both ends of the connecting hole 111 are provided with steps 0113, and both ends of the sealing rubber ring 0111 abut against the two steps 0113. The steps 0113 are used for abutting against the sealing rubber ring 0111 to prevent the sealing rubber ring 0111 from loosening and falling out. The sealing rubber ring 0111 is matched and connected with the connecting hole 111 to achieve a good sealing effect.

[0034] Further, one end of the connecting hole 111 close to the first threaded bolt 112 is provided with a disposable protective film, and the disposable protective film is used for plugging the connecting hole 111. When the delivery pipe 1 needs to be used, the disposable protective film needs to be torn off, and then the needle head body 2 can be connected into the connecting hole 111 on the delivery pipe 1. Therefore, the disposable protective film can prevent external pollution sources from entering the inside of the delivery pipe 1, and can play a role in protecting the delivery pipe 1. At the same time, it can also distinguish whether the delivery pipe 1 has been used or not. Avoiding the delivery pipe 1 being used twice.

[0035] Further, as shown in Figure 1 、 Figure 2 , the needle tube 22 is sleeved with a protective tube 23, and the protective tube 23 is detachably connected on the needle tube 22. The protective tube 23 is sleeved on the needle tube 22, which can prevent the needle tube 22 from hurting medical staff before use. At the same time, it also avoids external pollutants from polluting the needle tube 22. At the same time, it can also protect the sharp part of the needle tube 22.

[0036] Further, as shown in Figure 1 、 Figure 2 , the end of the vacuum blood collector 3 connected with the delivery pipe 1 is detachably connected with a container upper cover 31, and the container upper cover 31 is provided with a one-way valve 311, and the one-way valve 311 is unidirectionally communicated to the inside of the vacuum blood collector 3. The one-way valve 311 can keep the inside of the vacuum blood collector in a vacuum state. At the same time, it can avoid the blood collected by the vacuum blood collector 3 from leaking out. When blood testing is carried out, the blood sample can be poured out by directly opening the container upper cover 31.

[0037] Further, as shown in Figure 2 , the end of the delivery pipe 1 connected with the vacuum blood collector 3 is provided with a second plug-in column 12, and the second plug-in column 12 is used for plugging the one-way valve 311, and the end of the second plug-in column 12 away from the delivery pipe 1 is a circular arc end. The second plug-in column 12 is matched with the flow guide hole of the one-way valve 311, and the circular arc end can avoid hurting medical staff.

[0038] Further, a protective sleeve 121 is detachably connected to the second plug-in post 12 on the factory package.

[0039] Further, the one-way valve 311 is a silica gel valve.

[0040] Further, as shown in Figure 1 , Figure 2 The first plug-in post 211 is integrally formed with the needle seat 21, and the needle seat 21 is provided with a needle wing 24.

[0041] Further, the vacuum blood collector 3 is of a transparent material structure.

[0042] In summary, the present application provides a blood collector suitable for a needle-free infusion connector.

[0043] Obviously, the above embodiments are only examples for clearly illustrating, rather than limiting the embodiments. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A blood collection device suitable for needle-free infusion connectors, characterized in that, include: A conveying pipe, one end of which is provided with a connector, the connector having a connection hole, and the inner sidewall of the connection hole being provided with a first bolt thread; The needle body includes a needle hub and a needle tube connected in sequence. The needle hub is provided with a first plug post that communicates with the needle tube. The first plug post is used to plug into the connector. The outer side wall of the first plug post is provided with a second bolt thread. The first bolt thread and the second bolt thread are matched so that the first plug post is screwed onto the connector. And a vacuum blood collection device, which is detachably connected to the other end of the delivery tube; The connection hole is provided with a sealing ring, the sealing ring has a through hole, the first plug post is matched and connected with the through hole, and a one-way guide is provided in the through hole, the one-way guide is directed to the vacuum blood collection device.

2. The lancing device suitable for use with a needleless infusion set according to claim 1, wherein, Both ends of the connecting hole are provided with steps, and both ends of the sealing ring abut against the two steps.

3. The lancing device suitable for use with a needleless infusion set of claim 1, wherein, A disposable protective film is provided at one end of the connection hole near the first bolt thread, and the disposable protective film is used to seal the connection hole.

4. The lancing device suitable for use with a needleless infusion set of claim 1, wherein, The needle tube is fitted with a protective tube, which is detachably connected to the needle tube.

5. The lancing device suitable for use with a needleless infusion set of claim 1, wherein, The vacuum blood collection device is detachably connected to a container cover at one end of the delivery tube. The container cover is equipped with a one-way valve that allows one-way flow into the vacuum blood collection device.

6. A lancing device suitable for use with a needleless infusion set according to claim 5, wherein, The delivery pipe is provided with a second plug at one end connected to the vacuum blood collection device. The second plug is used to insert the one-way valve. The end of the second plug away from the delivery pipe is an arc end.

7. A lancing device suitable for use with a needleless infusion set according to claim 6, wherein, The one-way valve is a silicone valve.

8. The lancing device suitable for use with a needleless infusion set of claim 1, wherein, The first insertion post is integrally formed with the needle seat, and the needle seat is provided with needle wings.

9. The lancing device suitable for use with a needleless infusion set of claim 1, wherein, The vacuum blood collection device is made of a transparent material.

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