CN204683619U - A kind of two-head blood-taking needle - Google Patents

Abstract

The utility model discloses a kind of two-head blood-taking needle, comprise syringe needle and needle handle, be arranged with needle guard outside syringe needle, the afterbody of needle handle is connected with the first end of a tee T; Second end of tee T is connected with first one end of taking a blood sample plastic flexible pipe, and the other end of the first blood sampling plastic flexible pipe is connected with the first needle stand, the first needle stand is provided with the first puncture needle tubing, is arranged with the first needle tube sheath outside the first puncture needle tubing; 3rd end of tee T is connected with second one end of taking a blood sample plastic flexible pipe, the other end of the second blood sampling plastic flexible pipe is removably connected by the cylinder portion that can insert for injection tube head with the second needle stand, second needle stand is provided with the second puncture needle tubing, outside the second puncture needle tubing, is arranged with the second needle tube sheath.This utility model can need according to practical situation and change blood drawing amount and blood drawing speed.

Description

A double-ended blood collection needle

technical field

The utility model relates to the field of medical equipment, in particular to a double-ended blood collection needle.

Background technique

Existing lancet structure as shown in accompanying drawing 1, mainly comprises lancet needle 1, needle handle 2, plastic hose 3, needle holder 4, puncture needle tube 5 and puncture needle protective cover 6 to form. During daily use, the needle 1 is connected to the venous blood vessel of the subject to be drawn, and then the needle tube 5 of the puncture needle is connected to the vacuum blood collection tube, so that the blood of the subject to be drawn can be drawn into the vacuum blood collection tube.

But at present, the negative pressure blood sucking speed of a single vacuum blood collection tube is constant, and the blood pumping volume is also constant, and the blood pumping volume and the blood pumping speed cannot be changed according to the needs of the actual situation.

Utility model content

The purpose of this utility model is to provide a double-ended blood collection needle for the above-mentioned shortcomings and defects of the existing blood collection needle, which can change the blood drawing volume and blood drawing speed according to the needs of the actual situation, and can solve the above problems.

The technical problem solved by the utility model can be realized by adopting the following technical solutions:

A double-ended blood collection needle, comprising a needle and a needle handle, the needle jacket is provided with a needle sheath, characterized in that,

The tail of the needle handle is connected to the first end of a three-way pipe;

The second end of the three-way pipe is connected to one end of the first blood collection plastic hose, and the other end of the first blood collection plastic hose is connected to the first needle seat, and the first needle seat is provided with a first puncture A needle tube, the first needle tube sheath is provided on the first puncture needle tube jacket;

The third end of the three-way pipe is connected to one end of the second plastic hose for blood collection, and the other end of the plastic hose for blood collection is connected to the second needle seat through a cylinder part into which the head of the syringe can be inserted. Detachably connected, the second needle seat is provided with a second puncture needle tube, and the second puncture needle tube outer is provided with a second needle tube sheath.

In a preferred embodiment of the present invention, the cylindrical portion is provided with external threads, and the inner wall of the second needle seat is provided with internal threads that cooperate with the external threads of the cylindrical portion.

In a preferred embodiment of the present invention, the inner wall of the cylinder is in the form of a tapered inner wall whose inner diameter gradually increases along the advancing direction of the drawn blood flow.

In a preferred embodiment of the present invention, a one-way valve core is arranged in the second end and the third end of the three-way pipe respectively.

In a preferred embodiment of the present utility model, a first cut-off clip is provided on the first blood collection plastic hose, and a second cut-off clip is provided on the second blood collection plastic hose.

In a preferred embodiment of the present invention, the first and second needle sheaths are made of memory rubber.

In a preferred embodiment of the present invention, an adhesive strip is provided on the needle handle.

Due to the adoption of the above technical scheme, the utility model can change the amount of blood drawn and the speed of blood drawn according to the needs of the actual situation. When a single tube of blood needs to be extracted, only one of the needle tube sheaths needs to be inserted into the vacuum blood collection tube; When it is necessary to extract double-tube blood, insert the two needle tube sheaths into a vacuum blood collection tube respectively; The syringe can be used to draw blood from the cylinder part.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic structural view of a blood collection needle in the prior art.

Fig. 2 is a schematic structural view of an embodiment of the utility model.

Fig. 3 is an enlarged view of the I place of Fig. 2 .

Detailed ways

In order to make the technical means realized by the utility model, creation features, purpose and effect easy to be understood, the utility model is further elaborated below.

Referring to a double-ended blood collection needle shown in FIG. 2 , it includes a needle 100 and a needle handle 200 . The needle 100 is covered with a hard needle sheath 110 to prevent stab wounds. In order to fix the needle handle 200 on the body of the blood sample conveniently, adhesive strips 210 can be arranged at the bottom of the soft wings on both sides of the needle handle 200, and the tail of the needle handle 200 is connected to the first end 310 of the three-way pipe 300 .

The second end 320 of the three-way pipe 300 is connected to one end of the first blood collection plastic hose 400a, and the other end of the first blood collection plastic hose 400a is connected to the first needle base 410a, and the first needle base 410a is provided with a first puncture needle. The needle tube 420a, the first puncture needle tube 420a is covered with a first needle tube sheath 430a.

The third end 330 of the three-way pipe 300 is connected to one end of the second blood collection plastic hose 400b, and the other end of the second blood collection plastic hose 400b is connected to the second needle seat 410b through a cylinder part 440 that can be inserted into the syringe head Detachably connected, the second needle base 410b is provided with a second puncture needle tube 420b, and the second puncture needle tube 420b is covered with a second needle tube sheath 430b. As shown in FIG. 3 , preferably, the barrel portion 440 in this embodiment is provided with an external thread 441 , and the inner wall of the second needle seat 410 b is provided with an internal thread 411 b matching the external thread 441 of the barrel portion 440 . In order to ensure the tightness of the connection between the syringe head and the cylinder part 440 , the inner wall of the cylinder part 440 is a tapered inner wall 442 whose inner diameter gradually increases along the advancing direction of the drawn blood flow.

In order to prevent blood from flowing back into the venous blood from the outside, the second end 320 and the third end 330 of the three-way tube 300 are respectively provided with one-way valve cores 321 and 331 which can communicate from the venous blood to the outside.

In order to facilitate the operation of medical personnel, a first stop clip 401a is provided on the first blood collection plastic hose 400a, and a second stop clip 401b is provided on the second blood collection plastic hose 400b.

The first and second needle tube sheaths 430a and 430b in this embodiment are made of memory rubber. When in use, the medical personnel only need to insert the first and second puncture needle tubes 420a and 420b into the vacuum blood collection tube. The two puncture needles 420a, 420b will pierce through the first and second needle sheaths 430a, 430b and enter the vacuum blood collection tube without removing the first and second needle sheaths 430a, 430b, and when the first and second When the puncture needle tubes 420a and 420b are pulled out, the first and second needle tube sheaths 430a and 430b are automatically reset and restored to cover the first and second puncture needle tubes 420a and 420b.

The utility model can change the amount of blood drawn and the speed of blood drawn according to the needs of the actual situation. When a single tube of blood needs to be extracted, only one of the needle tube sheaths needs to be inserted into the vacuum blood collection tube; The two needle tube sheaths can be inserted into a vacuum blood collection tube respectively; when blood needs to be drawn at a faster speed, the second needle holder 410b and the second puncture needle tube 420b are removed, and the head of the syringe is inserted into the cylinder part 440 to use Syringe to draw blood.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (7)

1. a two-head blood-taking needle, comprises syringe needle and needle handle, is arranged with needle guard, it is characterized in that outside described syringe needle,

The afterbody of described needle handle is connected with the first end of a tee T;

Second end of described tee T is connected with first one end of taking a blood sample plastic flexible pipe, the other end of described first blood sampling plastic flexible pipe is connected with the first needle stand, described first needle stand is provided with the first puncture needle tubing, outside described first puncture needle tubing, is arranged with the first needle tube sheath;

3rd end of described tee T is connected with second one end of taking a blood sample plastic flexible pipe, the other end of described second blood sampling plastic flexible pipe is removably connected by the cylinder portion that can insert for injection tube head with the second needle stand, described second needle stand is provided with the second puncture needle tubing, outside described second puncture needle tubing, is arranged with the second needle tube sheath.

2. a kind of two-head blood-taking needle as claimed in claim 1, is characterized in that, described cylinder portion is provided with external screw thread, and described second needle stand inwall is provided with the female thread coordinated with the external screw thread in described cylinder portion.

3. a kind of two-head blood-taking needle as claimed in claim 2, is characterized in that, the inwall in described cylinder portion becomes large conical inboard wall gradually in along blood drawing blood flow direction of advance internal diameter.

4. a kind of two-head blood-taking needle as claimed in claim 1, is characterized in that, is respectively arranged with a nonreturn valve core in the second end of described tee T and the 3rd end.

5. a kind of two-head blood-taking needle as claimed in claim 1, is characterized in that, described first blood sampling plastic flexible pipe arranges the first closing clip, and described second blood sampling plastic flexible pipe arranges the second closing clip.

6. a kind of two-head blood-taking needle as claimed in claim 1, is characterized in that, first, second needle tube sheath described is made up of memory rubber.

7. a kind of two-head blood-taking needle as claimed in claim 1, is characterized in that, described needle handle is provided with adhesive strip.