CN218684400U

CN218684400U - Connector structure for blood sampling device

Info

Publication number: CN218684400U
Application number: CN202220107461.9U
Authority: CN
Inventors: 闫影影
Original assignee: Guangzhou Women and Childrens Medical Center
Current assignee: Guangzhou Women and Childrens Medical Center
Priority date: 2022-01-14
Filing date: 2022-01-14
Publication date: 2023-03-24
Anticipated expiration: 2032-01-14

Abstract

The utility model is used in the field of medical apparatus, in particular to a connector structure for a blood sampling device, which comprises a connector and a connector, wherein the connector is used for matching with an interface of an open type vein indwelling needle; and the tube plug puncture needle is communicated with the connector and is used for inserting the vacuum blood collection tube. When blood is required to be collected, the connector is directly assembled into the interface of the open type venous indwelling needle to be connected, and then the tube plug puncture needle is inserted into the vacuum blood collection tube.

Description

Connector structure for blood sampling device

Technical Field

The utility model is used for the medical instrument field especially relates to a connector structure that blood sampling device used.

Background

At present, part of new patients need transfusion treatment and blood sample collection inspection, and the new pediatric patients are particularly outstanding; critical patients need to repeatedly collect blood samples for examination to understand the changes of the disease conditions. In order to reduce puncture times as much as possible, relieve pain of patients, protect blood vessels of patients, reduce hospital infection and nursing complications and improve working efficiency and quality, the following technologies and methods are adopted in clinical nursing for the patients according to the existing medical materials: 1. respectively operating infusion and blood sampling: this increases the puncture times, not only brings pain to the patient, but also is not beneficial to blood vessel protection, and also increases the probability of hospital infection; 2. taking a blood specimen by connecting a disposable venous blood taking needle from a heparin cap of an indwelling needle: in the method, the length of the indwelling needle and the blood taking needle rubber thread is 34.5cm, so that the catheter is too long, the pressure is insufficient during blood drawing, the speed and the amount of returned blood are influenced by different degrees, blood backflow is not smooth to cause unsuccessful blood drawing or insufficient blood volume, damage to red blood cells is easily caused, the accuracy of an inspection result is influenced, and particularly, the error of an electrolyte inspection result is more obvious; 3. taking a blood sample by connecting a syringe from a heparin cap of an indwelling needle: the method has uncontrollable blood drawing pressure, and when blood drawing is not smooth and blood backflow is not smooth, repeated force is applied to draw the piston of the injector back and forth, which causes overlarge negative pressure in the injector and causes damage to red blood cells. Meanwhile, foam or air is easily mixed in the pumped blood, and the foam part of the blood is easily coagulated in the syringe after long-time pumping. Secondly, the method for injecting blood into the test tube is inappropriate, and the blood needs to be injected slowly along the tube wall directly after the injector nipple and the vacuum blood sampling plug are taken down, so that although the injection pressure is reduced, red blood cells can be damaged mechanically to cause hemolysis, the blood specimen is polluted by open operation, the accuracy of the test result is influenced, and the occupational exposure risk is increased; 4. taking off the heparin cap and the vacuum blood sampling tube cap, and directly reserving a blood sample: this procedure results in inadequate or inaccurate blood volume retention due to the lack of moderate pressure, and blood is easily contaminated, affecting the test results, while occupational exposure risks are increased due to the open retention needles and vacuum blood collection tubes.

Application number is CN 201620247373.3's a vein indwelling vacuum blood sampling mechanism, including keeping somewhere the mechanism, it is connected with vacuum blood sampling needle body to keep somewhere the mechanism, vacuum blood sampling needle body mainly comprises vacuum tube syringe needle, connecting pipe and communicating pipe, the vacuum tube syringe needle is fixed as overall structure with the connecting pipe, the communicating pipe setting is inside the connecting pipe and communicate with the vacuum tube syringe needle, the inner wall of connecting pipe is provided with the screw thread, the screw thread of connecting pipe can close fixedly soon with keeping somewhere the mechanism, the connecting pipe setting is at the vacuum tube syringe needle and is kept somewhere between the mechanism, it is connected with the heparin cap to keep somewhere the mechanism, the opening that keeps somewhere the mechanism can be sealed to the heparin cap. The mechanism has simple design, low cost, convenient and safe use, is skillfully combined with the existing closed vein remaining needle, can effectively solve the outstanding problem that the blood sample is collected in clinical care and the vein of a patient needs to be punctured repeatedly, and ensures the inspection quality. The blood sampling mechanism cannot directly butt against an indwelling needle, then blood is sampled through the indwelling needle, a rubber thread and a connector are added on the basis of the indwelling needle, blood is sampled through the connector, more parts are connected to the indwelling needle, and the blood sampling mechanism is not convenient for a patient, so that the blood sampling mechanism cannot adapt to the indwelling needle which is singly reserved in a blood vessel.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a connector structure that blood sampling device used, can keep somewhere the needle from the open and take blood, can not lead to blood to leak the pollution outward, and stop to adopt the syringe to draw blood, can not take place the hemolysis.

The utility model provides a technical scheme that its technical problem adopted is: a connector structure for blood sampling device comprises

The connector is used for matching with an interface of the open type venous indwelling needle;

and the tube plug puncture needle is communicated with the connector and is used for inserting the vacuum blood collection tube.

The technical scheme at least has the following advantages or beneficial effects: the needle head of the open type venous indwelling needle is buried in a venous blood vessel, the interface of the open type venous indwelling needle is communicated with the needle head, when blood sampling is needed, the connector is directly assembled into the interface of the open type venous indwelling needle to be connected, then the tube plug puncture needle is inserted into the vacuum blood sampling tube, and the vacuum blood sampling tube is of a vacuum structure, so that blood can be pumped out of the open type venous indwelling needle into the vacuum blood sampling tube under negative pressure, therefore, the traditional blood sampling mode that the interface of the open type venous indwelling needle is directly opened to drop the blood into the blood sampling tube is avoided, the blood is completely pumped inside the connector structure for the blood sampling device, external leakage is avoided, the blood is not polluted, in addition, the blood pumping through an injector is also avoided, and hemolysis is prevented.

Further as the utility model discloses technical scheme's improvement, the connector with the stopcock pjncture needle passes through the pipeline intercommunication.

Further conduct the utility model discloses technical scheme's improvement, the pipeline is hose construction.

Further conduct the utility model discloses technical scheme's improvement, the connector includes main part and cooperation end, the cooperation end is fixed in the main part, the cooperation end is used for stretching into the interface that open vein kept somewhere the needle and closely cooperates with the interface inner wall that open vein kept somewhere the needle.

Further conduct the utility model discloses technical scheme's improvement, the diameter of main part is greater than the diameter of cooperation end.

Further conduct the utility model discloses technical scheme's improvement, the outer wall of cooperation end is equipped with the seal cover.

Further conduct the utility model discloses technical scheme's improvement, the interface buckle of cooperation end and open vein indwelling needle is connected.

Further conduct the utility model discloses technical scheme's improvement, the outer wall of cooperation end is equipped with the lug, and open vein detains the interface inner wall of needle and is equipped with the draw-in groove, the lug can imbed chucking after the draw-in groove rotates.

Further as the utility model discloses technical scheme's improvement, the interface threaded connection of needle is kept somewhere to cooperation end and open vein.

Further conduct the utility model discloses technical scheme's improvement, the outer wall of cooperation end is equipped with the external screw thread, and open vein detains the interface inner wall of needle and is equipped with the internal thread, the external screw thread can with interior screw-thread fit.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural view of the middle vacuum blood collection tube of the present invention.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the present invention, if there is a description of directions (up, down, left, right, front and back), it is only for convenience of description of the technical solution of the present invention, and it is not intended to indicate or imply that the technical features indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the utility model, the meaning of "several" is one or more, the meaning of "a plurality of" is more than two, "greater than", "less than", "exceed" and so on are understood as not including the number; "above", "below", "within" and the like are understood to include the present numbers. In the description of the present invention, if there is any description of "first" and "second" only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the present invention, unless otherwise explicitly defined, the terms "set", "install", "connect", and the like are to be understood in a broad sense, and for example, may be directly connected or may be indirectly connected through an intermediate medium; can be fixedly connected, can be detachably connected and can be integrally formed; may be mechanically connected, may be electrically connected or may be capable of communicating with each other; either internal to the two elements or in an interactive relationship of the two elements. The technical skill in the art can reasonably determine the specific meaning of the above words in the present invention by combining the specific contents of the technical solution.

The open type indwelling needle is an indwelling needle which needs to press a blood vessel by hands after a needle core of the indwelling needle is withdrawn so as to prevent blood from overflowing from the tail end of the needle.

In clinical practice, blood is collected from an open indwelling needle generally in a mode of directly dropping blood into a venous blood collection tube or in a mode of extracting blood by using a syringe, but when blood is directly dropped into a venous blood collection tube, blood is easily leaked and polluted, and when blood is extracted by using a syringe, blood is difficult to extract and hemolysis is easily caused.

In order to solve the above technical problem, the utility model provides a connector structure that blood sampling device used, refer to fig. 1, 2, the connector structure that blood sampling device used includes connector 1 and stopcock pjncture needle 2.

The connector 1 is used for being matched with an interface of an open type venous indwelling needle, the tube plug puncture needle 2 is communicated with the connector 1, and the tube plug puncture needle 2 is used for being inserted into a vacuum blood collection tube 4.

The needle head of the open type venous indwelling needle is buried in a venous blood vessel, the interface of the open type venous indwelling needle is communicated with the needle head, when blood sampling is needed, the connector 1 is directly assembled into the interface of the open type venous indwelling needle to be connected, then the tube plug puncture needle 2 is inserted into the vacuum blood sampling tube 4, because the vacuum blood sampling tube 4 is of a vacuum structure, blood can be drawn out of the open type venous indwelling needle under negative pressure and then flows into the vacuum blood sampling tube 4, therefore, the traditional blood sampling mode that the interface of the open type venous indwelling needle is directly opened to drop the blood into the blood sampling tube is avoided, the blood is completely drawn inside the connector structure for the blood sampling device, no external leakage occurs, therefore, the blood cannot be polluted, in addition, the blood drawing through the injector is also stopped, and hemolysis is prevented.

The structure of connector 1 is the structure of the interface that can the open vein of adaptation indwelling needle, and connector 1 includes main part 101 and cooperation end 100, and cooperation end 100 is fixed on main part 101, and cooperation end 100 is used for stretching into the interface of open vein indwelling needle and closely cooperates with the interface inner wall of open vein indwelling needle.

The interface of open vein detaining needle is cylindrical tubular structure, and cooperation end 100 is cylindric structure, and the inside passageway that link up both ends that is equipped with of cooperation end 100, the one end of main part 101 communicates with each other with the inside of cooperation end 100, and the other end of main part 101 passes through pipeline 3 and stopcock pjncture needle 2 intercommunication.

The matching end head 100 can extend into the interface of the open type venous indwelling needle, the diameter of the matching end head 100 is smaller than that of the main body 101, and after the matching end head 100 is assembled into the interface of the open type venous indwelling needle, the end face of the main body 101 can abut against the end face of the interface of the open type venous indwelling needle.

Blood flowing out of the hub of the open venous indwelling needle passes through the coupling tip 100 and the body 101 and then flows through the tube 3 to flow out of the stopple puncture needle 2 into the evacuated blood collection tube 4.

Furthermore, the pipe 3 connecting the plug puncture needle 2 with the connector 1 is of a hose structure, so that the connector structure for the whole blood sampling device is more flexible to use, and the positions of the connector 1 and the plug puncture needle 2 can be adjusted according to the requirements of users.

The stopple puncture needle 2 has the same structure as a puncture needle used for a conventional blood collection needle.

In order to ensure that the outer wall of the matching end head 100 is tightly matched with the inner wall of the interface of the open type venous indwelling needle, and prevent blood from seeping out between the outer wall of the matching end head 100 and the inner wall of the interface of the open type venous indwelling needle, in some embodiments, a sealing sleeve is sleeved on the outer wall of the matching end head 100, and is specific, the sealing sleeve is of an elastic silica gel sleeve structure and is wrapped on the outer wall of the matching end head 100, after the matching end head 100 stretches into the interface of the open type venous indwelling needle, the sealing sleeve can seal the outer wall of the matching end head 100 and the inner wall of the interface of the open type venous indwelling needle, so that blood is prevented from flowing out between the outer wall of the matching end head 100 and the inner wall of the interface of the open type venous indwelling needle.

In some embodiments, the mating end 100 is snap-fit connected to the interface of the open type venous indwelling needle, so that the connector 1 and the interface of the open type venous indwelling needle are connected by the snap-fit connection, so that the connection is firmer and the connection is not easy to separate.

Specifically, the relative both sides of the outer wall of cooperation end 100 are equipped with the lug respectively, be equipped with the draw-in groove on the relative inner wall of interface of open vein indwelling needle respectively, the draw-in groove is for including first cell body and second cell body, first cell body and second cell body intercommunication, the one end of first cell body extends to the edge of the interface of open vein indwelling needle along the axial of the interface of open vein indwelling needle, the other end axial of first cell body extends to inside the interface of open vein indwelling needle, the second cell body communicates with the inside one end of interface that first cell body extends to open vein indwelling needle, the second cell body extends the certain distance along the circumference of the interface of open vein indwelling needle, so the draw-in groove is the L type structure inside the interface of open vein indwelling needle.

The lug is the rectangular block structure, in the assembling process, during the lug imbeds first cell body earlier, then push into the interface with cooperation end 100, the lug also can slide in first cell body simultaneously, when the lug slides the junction of first cell body and second cell body, rotate connector 1, make the lug side direction enter into the card in the second cell body and go into, thereby make cooperation end 100 fasten the interface of cooperating the needle of keeping somewhere to open vein, make the two firm in connection, then can take a blood sample in inserting vacuum test tube 4 with stopcock pjncture needle 2.

In other embodiments, mating tip 100 is threadably connected to an interface of an open vein indwelling needle.

Specifically, the outer wall of the fitting end 100 is provided with an external thread, and the inner wall of the interface of the open type venous indwelling needle is provided with an internal thread, and the external thread can be matched with the internal thread.

In the assembling process, the matching end head 100 of the connector 1 is screwed into the interface of the open type venous indwelling needle, so that the connector 1 is in threaded connection with the interface of the open type venous indwelling needle, the end face of the main body 101 is screwed to be in contact with the interface end face of the open type venous indwelling needle, and then the tube plug puncture needle 2 is inserted into the vacuum blood collection tube 4 to collect blood.

Of course, the present invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims

1. The utility model provides a connector structure that blood sampling device used which characterized in that: comprises that

The connector is used for being matched with the interface of the open type venous indwelling needle and comprises a main body and a matching end head, the matching end head is fixed on the main body, and the matching end head is used for extending into the interface of the open type venous indwelling needle and is tightly matched with the inner wall of the interface of the open type venous indwelling needle;

the tube plug puncture needle is communicated with the connector, the tube plug puncture needle is used for inserting a vacuum blood collection tube, the connector is communicated with the tube plug puncture needle through a pipeline, and the pipeline is of a hose structure.

2. The connector structure for a blood collecting device according to claim 1, wherein: the diameter of the body is greater than the diameter of the mating end.

3. The connector structure for a blood collecting device according to claim 1, wherein: and a sealing sleeve is arranged on the outer wall of the matching end.

4. The connector structure for a blood collecting device according to claim 1, wherein: the matching end is connected with the interface buckle of the open type venous indwelling needle.

5. The connector structure for a blood collecting device according to claim 1, wherein: the outer wall of cooperation end is equipped with the lug, and open vein detains the interface inner wall of needle and is equipped with the draw-in groove, the lug can imbed the chucking after the draw-in groove rotates.

6. The connector structure for a blood collecting device according to claim 1, wherein: the matching end is in threaded connection with an interface of the open type venous indwelling needle.

7. The connector structure for a blood collecting device according to claim 6, wherein: the outer wall of cooperation end is equipped with the external screw thread, and open vein detains the interface inner wall of needle and is equipped with the internal thread, the external screw thread can with the interior screw-thread fit.