CN115444414A - Blood taking needle and use method thereof - Google Patents

Abstract

The invention is used in the field of medical apparatus and instruments, in particular to a blood taking needle and a use method of the blood taking needle, wherein the blood taking needle comprises an indwelling tube, an indwelling end and a pipeline, and the pipeline is communicated with the indwelling end; the puncture needle is provided with a needle head, a needle seat and a needle seat plug, wherein the needle head is arranged on the needle seat and is arranged in a pipeline in a penetrating way, a blood return cavity is arranged on the needle seat, the blood return cavity forms an opening on one side of the needle seat, the needle seat plug is assembled in the opening, and the inside of the blood return cavity is vacuum. The puncture needle and the indwelling tube puncture the blood vessel of the patient, blood enters the blood return cavity through the needle head, the puncture needle is pulled out, the pipeline is kept in the blood vessel, the needle seat plug is pulled out, blood is extracted for detection, the puncture needle does not need to be abandoned, but is utilized for blood sampling, the cost is saved, and the blood sampling is convenient. The blood taking needle using method is characterized in that a puncture needle and an indwelling tube are punctured into a blood vessel; the blood flows to the blood returning cavity through the needle; the puncture needle is pulled out to cause the pipeline to be remained in the blood vessel; the needle head protective sleeve is sleeved on the needle head, and the needle head is penetrated into the rubber plug; and (4) pulling out the needle base plug and detecting blood.

Description

Blood taking needle and use method thereof

Technical Field

The invention belongs to the field of medical instruments, and particularly relates to a blood taking needle and a use method thereof.

Background

The blood taking needle is kept somewhere to current artery is usually with the pjncture needle with keep somewhere the pipe and together puncture into patient's blood vessel, then take out the pjncture needle, keep somewhere the pipe and then put into the blood vessel, when needs blood sampling, directly dock the syringe to the exposure of keeping somewhere the pipe on the end, then through syringe extraction blood, the pjncture needle that this kind of artery was kept somewhere in the blood taking needle often only plays the effect of puncture, will abandon after the puncture is accomplished, still need the syringe to gather in the time of blood sampling moreover, lead to medical device abandonment more, it is comparatively loaded down with trivial details to use.

Disclosure of Invention

In order to solve at least one of the above technical problems, the present invention provides a lancet and a method for using the lancet, and adopts the following technical solutions.

In a first aspect, the present invention provides a lancet comprising

An indwelling tube having an indwelling tip and a conduit in communication with the indwelling tip;

the pjncture needle, the pjncture needle has syringe needle, needle file and needle file stopper, the syringe needle installation on the needle file, the syringe needle is worn to establish in the pipeline, be equipped with back blood chamber on the needle file, it is in to return blood chamber one side of needle file forms uncovered, the assembly of needle file stopper is in uncovered.

The blood taking needle provided by the embodiment of the invention at least has the following beneficial effects: in the use, with the puncture needle of cover together with keep somewhere in the pipe puncture patient's blood vessel, blood in the blood vessel can enter into back the blood chamber through the syringe needle, then press the end of keeping somewhere of pipe, extract the puncture needle, make the pipeline of keeping somewhere on the pipe stay in the blood vessel, will keep somewhere the pipe through the adhesive tape and fix, take the puncture needle to the blood detection machine next door, extract the needle file stopper, make the detection head on the blood detection machine stretch into and draw blood in the back blood chamber and detect, the puncture needle of blood taking needle need not directly abandon after the puncture, but utilize and get up and take a blood sample, thereby effectively save the cost, and also need not to dock the syringe and take a blood sample, also can accomplish the blood sampling when putting into the blood vessel with keeping somewhere the pipe, so the blood sampling is more convenient.

According to other embodiments of the present invention, a lancet further includes a needle protecting case longer than the needle, the needle protecting case being sleeved outside the needle and connected to the needle holder.

According to the lancet of other embodiments of the present invention, a rubber plug is provided inside the needle protecting sleeve.

According to other embodiments of the blood taking needle, the needle seat is provided with a pushing block.

According to another embodiment of the lancet, wings are provided at both sides of the indwelling tube.

According to the blood taking needle of other embodiments of the invention, the indwelling tip is provided with a assembling groove, and a pipe clamp is installed in the assembling groove and used for clamping a pipeline in the indwelling pipe.

According to other embodiments of the present invention, the tube clamp includes a base and a movable plate, one side of the movable plate is elastically connected to the base, the other side of the movable plate is detachably connected to the base, and a clamping block is disposed on the inner side of the movable plate.

According to the blood taking needle of other embodiments of the invention, the tube clamp further comprises a side plate, a through hole is arranged on the side plate, and a pipeline in the indwelling tube penetrates through the through hole.

In a second aspect, the present invention provides a method of using a lancet, comprising the steps of:

the puncture needle and the indwelling tube which are sleeved together are punctured into the blood vessel together;

the blood in the blood vessel flows to the blood returning cavity through the needle;

the puncture needle is pulled out to cause the pipeline of the indwelling tube to be indwelling in the blood vessel;

sleeving a needle head protective sleeve on the needle head, and enabling the needle head to penetrate into the rubber plug;

taking the needle head protective sleeve and the puncture needle to a blood detector;

the needle seat plug is pulled out, and then the opening of the needle seat is aligned to the blood drawing tube of the blood detection machine, so that the blood is drawn.

The use method of the blood taking needle provided by the embodiment of the invention at least has the following beneficial effects: the effectual pjncture needle that will utilize at the blood sampling in-process, need not just directly abandon after the puncture, can save the cost, also need not use the syringe in addition, it is also very convenient to use, after the pjncture needle of adopting blood inserts the plug in the syringe needle protective sheath in addition, the syringe needle can be protected to the syringe needle protective sheath, the tip of syringe needle can be shutoff to the plug, effective isolated air prevents that blood from dropping from the syringe needle tip, the syringe needle protective sheath can protect the syringe needle accidental injury medical staff.

According to the use method of the lancet according to other embodiments of the present invention, the tube clamp is clamped after the puncture needle is withdrawn.

Drawings

The invention will be further described with reference to the accompanying drawings in which:

FIG. 1 is a schematic block diagram of one embodiment of the present invention;

FIG. 2 is a schematic view of the embodiment of FIG. 1 with the needle shield and hub plug removed;

FIG. 3 is a schematic view of a needle inserted through a needle shield in one embodiment of the present invention;

FIG. 4 is a schematic structural view of the indwelling tube of the embodiment of FIG. 1;

FIG. 5 is a schematic view of the structure of the needle of the embodiment of FIG. 1;

FIG. 6 is a schematic view of the needle shield of the embodiment of FIG. 1;

FIG. 7 is a schematic view of the structure of the needle hub plug in the embodiment of FIG. 1;

FIG. 8 is a schematic view of the structure of an indwelling tube according to another embodiment of the present invention;

FIG. 9 is a schematic view of the construction of the conduit clamp of the embodiment of FIG. 8;

fig. 10 is a side cross-sectional view of the embodiment shown in fig. 8.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the present invention, if directions (up, down, left, right, front, and rear) are described, it is only for convenience of describing the technical solution of the present invention, and it is not intended or implied that the technical features referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, it is not to be construed as limiting the present invention.

In the invention, the meaning of "a plurality of" is one or more, the meaning of "a plurality of" is more than two, and the meaning of "more than", "less than", "more than" and the like is understood to not include the number; the terms "above", "below", "within" and the like are understood to include the instant numbers. In the description of the present invention, if there is 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 specifically limited, the terms "disposed," "mounted," "connected," and the like are to be understood in a broad sense, and for example, may be directly connected or indirectly connected through an intermediate; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be mechanically connected, may be electrically connected or may be capable of communicating with each other; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above-mentioned words in the present invention can be reasonably determined by those skilled in the art in combination with the detailed contents of the technical solutions.

The blood taking needle is kept somewhere to current artery is usually with the pjncture needle with keep somewhere the pipe together puncture into patient's blood vessel, then take out the pjncture needle, it then puts into the blood vessel to keep somewhere the pipe, when needs blood sampling, directly dock the syringe to the tip that exposes of keeping somewhere the pipe, then draw blood through the syringe, the pjncture needle in this kind of blood taking needle is kept somewhere to the artery often only plays the effect of puncture, will abandon after the puncture, still need the syringe to gather in the time of blood sampling moreover, it is more to lead to medical device abandonment, it is comparatively loaded down with trivial details to use.

In order to solve the above technical problems, the present invention provides a lancet.

Referring to fig. 1 to 10, the blood collection needle includes an indwelling tube 100 and a puncture needle 200, the indwelling tube 100 has an indwelling end 110 and a tube 120, the tube 120 is communicated with the indwelling end 110, the puncture needle 200 has a needle 210, a needle hub 220 and a needle hub plug 230, the needle 210 is mounted on the needle hub 220, the needle 210 is inserted into the tube 120, a blood return chamber is provided on the needle hub 220, the blood return chamber forms an opening 221 at one side of the needle hub 220, and the needle hub plug 230 is fitted in the opening 221.

In the use, puncture needle 200 and indwelling tube 100 that will overlap together puncture the patient blood vessel in, blood in the blood vessel can enter into the blood return chamber through syringe needle 210, then hold indwelling end 110 of indwelling tube 100, extract puncture needle 200, make pipeline 120 on the indwelling tube 100 stay in the blood vessel, fix indwelling tube 100 through the adhesive tape, take puncture needle 200 to the blood detection machine next door, extract needle file stopper 230, make the detection head on the blood detection machine stretch into and draw blood in the blood return chamber and detect, puncture needle 200 of blood taking needle directly abandons after not needing the puncture, but utilize and take a blood sample, thereby effectively save the cost, and also need not to dock the syringe and take a blood, also can accomplish the blood sample when placing indwelling tube 100 into the blood vessel, so the blood sampling is more convenient.

Referring to fig. 10, the indwelling tip 110 of the indwelling tube 100 is a rigid plastic tubular structure, the front end of the indwelling tip 110 is closed and has an opening 111 at the rear end, the tube 120 of the indwelling tube 100 includes a thick tube 121 disposed inside the indwelling tip 110 and a thin tube 122 disposed at one end of the indwelling tip 110, the thick tube 121 is fixed inside the indwelling tip 110, one end of the thick tube 121 is communicated with the opening at the rear end of the indwelling tip 110, the other end of the thick tube 121 extends to the closed end of the indwelling tip 110 and is fixed, the thin tube 122 is mounted at the closed end of the indwelling tip 110, one end of the thin tube 122 extends into the closed end of the indwelling tip 110 and is communicated with the thick tube 121, the needle head 210 of the puncture needle 200 is inserted into the communicated thick tube 121 and thin tube 122, the thin tube 122 is inserted into the blood vessel after the puncture needle 200 is inserted into the blood vessel, the thin tube 122 is inserted into the blood vessel after the puncture needle 200 is withdrawn, and the blood sampling tube 100 is completed.

After the thin flexible tube 122 of the indwelling tube 100 is placed in a blood vessel, it is generally necessary to fix the indwelling tip 110, and in some embodiments, the indwelling tube 100 is provided with wings 112 on both sides, and the wings 112 are fixed to the skin by an adhesive tape to fix the indwelling tube 100.

The shape of the wing plate 112 may be a semicircle or other polygonal structure, and the specific shape is not limited.

In order to facilitate the pushing force exerted on the indwelling tube 100 by the practitioner during needle delivery, in some embodiments, the indwelling tip 110 is provided with a pushing block 113.

Specifically, the pushing block 113 is a plastic block structure protruding above the indwelling tip 110, and the medical staff can push the pushing block 113 with the index finger in the needle feeding process to exert a good pushing force, so that the puncture needle 200 and the indwelling tube 100 can be conveniently pushed into the blood vessel.

When indwelling tube 100 is placed in a blood vessel and blood is rushed out of indwelling tube 100 due to the high pressure in the blood vessel after removing puncture needle 200, in order to prevent the rushing of blood, referring to fig. 8, 9 and 10, in some embodiments, indwelling tube 100 has a mounting groove in indwelling tip 110, in which tube clamp 300 is mounted, and tube clamp 300 is used to clamp tube 120 in indwelling tube 100.

Specifically, the tube clamp 300 is installed in the assembly groove, the tube clamp 300 is used to clamp the thick hose 121 in the indwelling tube 100, and the tube clamp 300 is clamped immediately after the puncture needle 200 is withdrawn, so that the tube clamp 300 blocks the thick hose 121 in the indwelling tube 100, preventing the ejection of blood.

In some embodiments, the pipe clamp 300 includes a base 310 and a movable plate 320, one side of the movable plate 320 is elastically connected to the base 310, the other side of the movable plate 320 is detachably connected to the base 310, and a clamping block 321 is disposed inside the movable plate 320.

Specifically, the pipe clamp 300 is made of a plastic material, the base 310 is of a U-shaped structure, the movable plate 320 is of a plate-shaped structure, the movable plate 320 is installed on the open side of the base 310, one end of the movable plate 320 is connected with the arc-shaped plate 322 on one side of the base 310, the movable plate 320 can elastically move relative to the base 310, the other end of the movable plate 320 is connected with the base 310 in a buckling mode, the clamping blocks 321 arranged on the inner side of the movable plate 320 are of a triangular structure, edges of the clamping blocks 321 face the inside of the base 310, when the thick hose 121 needs to be clamped and blocked, the movable plate 320 is pressed, the movable plate 320 descends, the thick hose 121 is clamped and clamped in the assembling groove through the clamping blocks 321, and then the movable plate 320 is connected with the base 310 in the buckling mode, so that the thick hose 121 can be clamped and blocked, and blood can be prevented from being splashed out.

In order to ensure that the pipe clamp 300 is firmly installed in the assembly groove, in some embodiments, the pipe clamp 300 further includes a side plate 330, a through hole 331 is formed on the side plate 330, and the pipe 120 in the indwelling pipe 100 is inserted into the through hole 331.

Specifically, the side plate 330 is disposed on one side of the tube clamp 300, the side plate 330 is of a triangular plate structure, the bottom edge of the side plate 330 is connected with the bottom plate of the base 310, the side plate 330 is provided with a through hole 331, and the thick hose 121 is inserted into the through hole, so that the tube clamp 300 mounted in the assembly groove can be firmly sleeved on the thick hose 121, when the tube 120 needs to be blocked, only the movable plate 320 on the tube clamp 300 needs to be pressed, and when blood is needed to be drawn, the movable plate 320 is opened.

In order to facilitate the medical staff to press the movable plate 320, in some embodiments, the movable plate 320 is provided with a pressing block 323, so that the medical staff can press the movable plate 320 down to be connected with the base 310 in a buckling manner through the pressing block 323.

Needle file 220 is plastic construction, and the inside blood return chamber that can hold blood that is equipped with of needle file 220 returns the blood chamber, returns the blood chamber and forms uncovered 221 in one side of needle file 220, and syringe needle 210 is fixed at the opposite side of needle file 220 and is communicated with each other with returning the blood chamber, and needle file stopper 230 assembles in the uncovered 221 of needle file 220, and after blood in the blood vessel entered into the blood return chamber, extract pjncture needle 200, pulls out needle file stopper 230 and can take the detection with the blood in the blood return chamber.

In the present invention, since the needle 210 of the puncture needle 200 is longer than the thin tube 122 of the indwelling tube 100, the end of the needle 210 is exposed to the outside of the thin tube 122 after the puncture needle 200 is inserted into the indwelling tube 100.

In some embodiments, the volume of the flashback chamber is one milliliter.

In order to prevent arterial blood coagulation and facilitate blood and gas analysis, heparin liquid is arranged in the blood returning cavity.

In some embodiments, the lancet further comprises a needle shield 400, the needle shield 400 being longer than the needle 210, the needle shield 400 being mounted externally of the needle 210 and connected to the hub 220.

When a medical staff holds the puncture needle 200 with blood to be detected by the blood detector, the needle 210 is exposed, which is easy to accidentally injure the medical staff, and the blood in the blood returning cavity of the needle base 220 can also drip from the end of the needle 210 to cause pollution.

Specifically, plug 410 is the silica gel material, plug 410 is established in the bottom of syringe needle protective sheath 400, the concrete shape of syringe needle protective sheath 400 is not specifically injectd, as long as can play protection syringe needle 210 can, after pjncture needle 200 extracts, can stretch into syringe needle protective sheath 400 with pjncture needle 200's syringe needle 210, make during plug 410 is pierced to the tip of syringe needle 210, plug 410 can form the shutoff to the tip of syringe needle 210, isolated air, prevent blood dripping, syringe needle protective sheath 400 protects syringe needle 210, prevent that syringe needle 210 from accidentally injuring the staff.

The invention also provides a use method of the blood taking needle, which comprises the following steps:

the puncture needle 200 and the indwelling tube 100 which are sleeved together are inserted into the blood vessel together;

blood in the blood vessel flows through needle 210 to the flashback chamber;

withdrawing the puncture needle 200 to cause the tube 120 of the indwelling tube 100 to be indwelling in the blood vessel;

sleeving the needle protecting sleeve 400 on the needle 210 and allowing the needle 210 to penetrate into the rubber plug 410;

taking the needle head protective sleeve 400 and the puncture needle 200 to a blood detection machine;

the hub plug 230 is withdrawn and the open mouth 221 of the hub 220 is aligned with the blood withdrawal tube of the blood test machine so that it withdraws blood.

Like this blood sampling in-process is effectual utilizes pjncture needle 200, need not just directly abandon after the puncture, can save the cost, and also need not use the syringe, it is also very convenient to use, in addition, after the pjncture needle 200 of gathering blood inserts the plug 410 in the syringe needle protective sheath 400, syringe needle 210 can be protected to syringe needle protective sheath 400, the tip of syringe needle 210 can be blocked to plug 410, effective isolated air, prevent blood from dropping from syringe needle 210 tip, syringe needle 210 can be protected to syringe needle protective sheath 400, prevent that syringe needle 210 from accidentally injuring medical staff.

In some embodiments, clamping tube clip 300 after withdrawal of needle 200 prevents a violent expulsion of blood from catheter 100.

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 (10)

1. A blood collection needle, characterized in that: comprises that

An indwelling tube having an indwelling tip and a conduit in communication with the indwelling tip;

the puncture needle, the puncture needle has syringe needle, needle file and needle file stopper, the syringe needle installation on the needle file, the syringe needle is worn to establish in the pipeline, be equipped with back blood chamber on the needle file, it is in to return blood chamber one side of needle file forms uncovered, the assembly of needle file stopper is in uncovered.

2. The lancet of claim 1, wherein: the blood taking needle further comprises a needle head protective sleeve, the needle head protective sleeve is longer than the needle head, and the needle head protective sleeve is sleeved outside the needle head and connected with the needle seat.

3. The blood collection needle according to claim 1, wherein: the inside of syringe needle protective sheath is equipped with the plug.

4. The blood collection needle according to claim 1, wherein: the needle base is provided with a pushing block.

5. The lancet of claim 1, wherein: wing plates are arranged on two sides of the indwelling pipe.

6. The blood collection needle according to claim 1, wherein: the indwelling end is provided with an assembling groove, a pipe clamp is arranged in the assembling groove, and the pipe clamp is used for clamping a pipeline in the indwelling pipe.

7. The lancet of claim 6, wherein: the pipe clamp comprises a base and a movable plate, one side of the movable plate is elastically connected with the base, the other side of the movable plate is detachably connected with the base, and a clamping block is arranged on the inner side of the movable plate.

8. The blood collection needle according to claim 7, wherein: the pipe clamp further comprises a side plate, a through hole is formed in the side plate, and a pipeline in the indwelling pipe penetrates through the through hole.

9. A use method of a blood taking needle is characterized by comprising the following steps:

the puncture needle and the indwelling tube which are sleeved together are punctured into the blood vessel together;

the blood in the blood vessel flows to the blood returning cavity through the needle;

the puncture needle is pulled out to cause the pipeline of the indwelling tube to be indwelling in the blood vessel;

sleeving a needle head protective sleeve on the needle head, and enabling the needle head to penetrate into the rubber plug;

taking the needle head protective sleeve and the puncture needle to a blood detector;

the needle seat plug is pulled out, and then the opening of the needle seat is aligned to the blood drawing tube of the blood detection machine, so that the blood is drawn.

10. The method of using a lancet according to claim 9, wherein: after the puncture needle is pulled out, the pipe clamp is clamped.

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