CN213219798U - Special blood taking needle for hemodialysis - Google Patents

Abstract

The utility model provides a special blood taking needle for hemodialysis, which belongs to the technical field of hemodialysis. The special blood taking needle for hemodialysis comprises a hemodialysis needle assembly and a blood taking needle assembly. The hemodialysis needle assembly includes a first tube and a second tube, and the lancet assembly includes a tube connector, a third tube and a test tube needle. Along draw-in groove slip first pipeline, first pipeline is compressed, blood ends in the first pipeline, screw off the second pipeline from hemodialysis appearance, and cup joint the coupling on the second pipeline, along draw-in groove reverse slip first pipeline, blood circulation in the first pipeline, insert the vacuum test tube with test tube needle tip, make patient's blood sample by the suction in the vacuum test tube through the negative pressure, extract the vacuum test tube, connect back original position with the second pipeline, directly connect the second pipeline that the blood taking needle subassembly passed through the blood through the coupling on, need not carry out extra puncture to the patient, the number of times of pricking has been reduced, patient's misery has been reduced.

Description

Special blood taking needle for hemodialysis

Technical Field

The utility model relates to a hemodialysis field particularly, relates to a special blood taking needle of hemodialysis.

Background

Hemodialysis is one of the kidney replacement treatment modes of patients with acute and chronic renal failure. The blood is drained to the outside of the body, and in a dialyzer consisting of a plurality of hollow fibers, the blood and electrolyte solution (dialysate) with similar body concentration are arranged inside and outside one hollow fiber, and the substance exchange is carried out by the principles of dispersion, ultrafiltration, adsorption and convection, thereby removing the metabolic waste in the body, maintaining the balance of electrolyte and acid and alkali, simultaneously removing excessive water in the body, and the whole process of the purified blood is called hemodialysis.

Maintenance hemodialysis patients require frequent blood sampling tests. The blood taking needle assembly is mainly used for collecting blood samples of patients in hemodialysis, providing physiological indexes for doctors and providing scientific basis for adopting specific treatment schemes.

The inventors have found that, when hemodialysis is performed on a patient with renal failure, blood needs to be drawn from the patient's body by the needle of the hemodialysis needle assembly and drained to the outside of the body, and when blood is drawn, blood needs to be drawn from the patient's body by the needle of the lancet assembly, and thus, it is necessary to puncture the patient several times, which causes the blood vessel of the patient to be damaged for a long period of time, and pain to the patient is increased.

SUMMERY OF THE UTILITY MODEL

In order to make up for the defects, the utility model provides a special blood taking needle for hemodialysis, aiming at improving the problems mentioned in the background technology.

The utility model discloses a realize like this:

the utility model provides a special blood taking needle for hemodialysis, which comprises a blood penetrating needle component and a blood taking needle component.

The hemodialysis needle assembly comprises a first pipeline, a second pipeline and a speed regulation pipe clamp, wherein one end of the second pipeline is communicated with the first pipeline, an external thread is arranged at the other end of the second pipeline, the first pipeline penetrates through the speed regulation pipe clamp in a sliding mode, the speed regulation pipe clamp comprises a pipe clamp main body, a clamping groove is formed between the pipe clamp main bodies, and the first pipeline can be arranged along the clamping groove in a sliding mode.

The blood taking needle assembly comprises a pipe joint, a third pipeline and a test tube needle, wherein an inner thread matched with an outer thread of the second pipeline is arranged in the pipe joint, the third pipeline passes through the pipe joint communicated with the second pipeline, and the test tube needle is communicated with the third pipeline and is far away from one end of the pipe joint.

In an embodiment of the present invention, a first holding portion is disposed between the first pipe and the second pipe.

In an embodiment of the present invention, the width from one end of the slot to the other end gradually increases or gradually decreases.

In an embodiment of the present invention, the pipe joint includes a pipe joint main body and an inner union, the pipe joint main body is screwed to the second pipe, the inner union is disposed inside the pipe joint main body, the inner union can be inserted into the second pipe, and the inner union is communicated with the third pipe.

In an embodiment of the present invention, the joint body of the pipe joint and the joint of the inner joint pipe are provided with a sealing gasket, and the sealing gasket is sleeved on the inner joint pipe.

In an embodiment of the present invention, a second hand-held portion is disposed between the pipe joint main body and the third pipe.

In an embodiment of the present invention, the first handheld portion and the second handheld portion are provided with a non-slip mat or printed with non-slip stripes, and the non-slip mat is a rubber pad.

The utility model discloses an in one embodiment, the test tube needle includes test tube needle file and test tube needle body, test tube needle hub connection in the third pipeline, test tube needle body communicate in the third pipeline, test tube needle body fixed connection in test tube needle file.

In an embodiment of the present invention, the tube clamp main body and the edge of the test tube needle seat have been provided with a circular arc chamfer.

The utility model discloses an in one embodiment, the external screw thread has been seted up to test tube needle file tip, test tube needle file one end threaded connection has the test tube needle sheath, the test tube needle sheath slide cup joint in the test tube needle body.

The utility model has the advantages that: the utility model discloses a special blood taking needle of hemodialysis that above-mentioned design obtained, during the use, along the first pipeline of the direction slip that the draw-in groove width reduces, first pipeline is compressed, the blood velocity of flow reduces until stopping in the first pipeline, screw off the second pipeline from hemodialysis appearance, and cup joint the coupling on the second pipeline, along the first pipeline of draw-in groove reverse slip, blood circulation in the first pipeline, insert test tube needle tip in the vacuum test tube that has prepared in advance, make patient's blood sample by the suction vacuum test tube through the negative pressure, extract the vacuum test tube, connect back original position with the second pipeline, directly connect the blood taking needle subassembly to the second pipeline of hemodialysis needle subassembly through the coupling, need not carry out extra puncture to the patient, the number of times of pricking has been reduced, patient's misery has been reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural view of a special blood taking needle for hemodialysis provided by an embodiment of the present invention;

FIG. 2 is a schematic structural view of a hemodialysis needle assembly provided by an embodiment of the present invention;

fig. 3 is a schematic structural view of a speed regulation pipe clamp provided by an embodiment of the present invention;

FIG. 4 is a schematic structural view of a blood collection needle assembly according to an embodiment of the present invention;

fig. 5 is a schematic view of a pipe joint structure according to an embodiment of the present invention;

fig. 6 is a schematic cross-sectional view of a pipe joint according to an embodiment of the present invention;

FIG. 7 is a schematic view of a test tube needle without a test tube needle sheath according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a test tube needle with a test tube needle sheath according to an embodiment of the present invention.

In the figure: 100-a hemodialysis needle assembly; 110-a first conduit; 120-a second conduit; 130-a first hand-held; 140-speed regulating pipe clamp; 141-a pipe clamp body; 142-a card slot; 200-a lancet assembly; 210-a pipe joint; 211-a pipe joint body; 212-inner nipple; 213-a gasket; 220-a third conduit; 230-a test tube needle; 231-test tube needle seat; 232-test tube needle body; 233-test tube needle sheath; 240-second hand-held portion.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but 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 should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. 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 limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

Referring to fig. 1, the present invention provides a special blood taking needle for hemodialysis, which comprises a blood needle assembly 100 and a blood needle assembly 200, wherein the needle of one end of the blood needle assembly 100 is inserted into the body of a patient, the other end of the blood needle assembly 100 is connected to the blood needle assembly 200, and the blood needle assembly 200 is used for drawing the blood of the patient, so that a doctor can conveniently detect various physiological indexes in the blood, and provide a scientific basis for the next treatment scheme.

Referring to fig. 2 and 3, the hemodialysis needle assembly 100 includes a first tube 110, a second tube 120 and a speed regulation tube clamp 140, specifically, the first tube 110 is a rubber hose, the second tube 120 is a plastic tube, one end of the second tube 120 is communicated with the first tube 110, the other end of the second tube 120 is provided with an external thread, a first holding portion 130 is disposed between the first tube 110 and the second tube 120, the first holding portion 130 is convenient for medical personnel to hold, and reduces the touching of the end of the second tube 120, the first tube 110 slides through the speed regulation tube clamp 140, the speed regulation tube clamp 140 is used for regulating the flow rate of blood in the first tube 110, the speed regulation tube clamp 140 includes a clamp main body 141, the clamp main body 141 is a plastic clamp integrally formed by a mold, a clamping groove 142 is disposed between the clamp main bodies 141, the width from one end to the other end of the clamping groove 142 gradually increases or gradually decreases, the first tube 110 slides along the direction in which the width of the clamping groove 142, the first tube 110 is compressed, the flow rate of blood in the first tube 110 decreases until it stops, and the flow rate of blood in the first tube 110 increases by sliding the first tube 110 in the opposite direction.

Referring to fig. 4 to 8, the lancet assembly 200 includes a tube connector 210, a third tube 220 and a test tube needle 230, wherein an inner thread adapted to an outer thread of the second tube 120 is formed in the tube connector 210, when the arrangement is specific, the tube connector 210 includes a tube connector body 211 and an inner tube 212, the tube connector body 211 is screwed to the second tube 120, the inner tube 212 is arranged inside the tube connector body 211, the inner tube 212 can be inserted into the second tube 120 to reduce the possibility of leakage, the inner tube 212 is communicated with the third tube 220, optionally, a sealing gasket 213 is arranged at a connection position of the tube connector body 211 and the inner tube 212, the sealing gasket 213 is sleeved on the inner tube 212, the sealing gasket 213 can increase the water tightness of the connection position and reduce the possibility of leakage, the third tube 220 is communicated with the second tube 120 through the tube connector 210, and the third tube 220 is a rubber hose.

In this application, the test tube needle 230 is communicated with one end of the third pipeline 220 far away from the tube joint 210, the test tube needle 230 is used for extracting blood of a patient, it should be noted that the test tube needle 230 includes a test tube needle holder 231 and a test tube needle body 232, the test tube needle holder 231 is connected to the third pipeline 220, the test tube needle holder 231 is a handheld part, the test tube needle body 232 is communicated with the third pipeline 220, the test tube needle body 232 is fixedly connected to the test tube needle holder 231, the test tube needle body 232 is provided with a rubber cap, the test tube needle body 232 with the rubber cap is inserted into a prepared vacuum blood collection tube, a blood sample of the patient is sucked into the vacuum blood collection tube by negative pressure, the edges of the tube clamp main body 141 and the test tube needle holder 231 are provided with arc chamfers to make the edges smoother, the end of the test tube needle holder 231 is provided with an external thread, one end of the test tube needle holder 231 is in threaded connection with a test tube needle, test tube needle sheath 233 is used for protecting test tube needle body 232, reduces test tube needle body 232 and receives the possibility of polluting, is provided with the handheld portion 240 of second between coupling main part 211 and the third pipeline 220, and the handheld portion 240 of second is convenient handheld, is provided with the slipmat on first handheld portion 130 and the handheld portion 240 of second or the printing has anti-skidding stripe, and the slipmat is the rubber pad, and the slipmat can increase frictional force, is difficult for the landing when making handheld.

Specifically, the working principle of the special blood taking needle for hemodialysis is as follows: when the blood collection needle assembly is used, the first pipeline 110 is slid along the width reducing direction of the clamping groove 142, the first pipeline 110 is compressed, the flow rate of blood in the first pipeline 110 is reduced until the blood flow stops, the second pipeline 120 is unscrewed from the hemodialysis instrument, the pipe joint 210 is sleeved on the second pipeline 120, the first pipeline 110 is slid along the clamping groove 142 in the reverse direction, the blood in the first pipeline 110 flows, the test tube needle sheath 233 is rotated, the test tube needle sheath 233 is pulled out, the test tube needle body 232 with the rubber cap is inserted into a prepared vacuum blood collection tube, a blood sample of a patient is sucked into the vacuum blood collection tube through negative pressure, the vacuum blood collection tube is pulled out, the first pipeline 110 is closed, the second pipeline 120 is connected to the original position, the blood collection needle assembly 200 is directly connected to the second pipeline 120 of the hemodialysis needle assembly 100 through the pipe joint 210, no extra puncture is needed for the patient, and the number of needle puncture is reduced, the pain of the patient is reduced.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A special blood taking needle for hemodialysis is characterized by comprising

The hemodialysis needle assembly (100) comprises a first pipeline (110), a second pipeline (120) and a speed regulation pipe clamp (140), one end of the second pipeline (120) is communicated with the first pipeline (110), the other end of the second pipeline (120) is provided with an external thread, the first pipeline (110) penetrates through the speed regulation pipe clamp (140) in a sliding mode, the speed regulation pipe clamp (140) comprises a pipe clamp main body (141), a clamping groove (142) is formed between the pipe clamp main bodies (141), and the first pipeline (110) can slide along the clamping groove (142);

the blood collection needle assembly (200), the blood collection needle assembly (200) includes a pipe joint (210), a third pipeline (220) and a test tube needle (230), an internal thread matched with the external thread of the second pipeline (120) is arranged in the pipe joint (210), the third pipeline (220) is communicated with the second pipeline (120) through the pipe joint (210), and the test tube needle (230) is communicated with one end, far away from the pipe joint (210), of the third pipeline (220).

2. The blood collection needle for hemodialysis of claim 1, wherein a first hand-held portion (130) is provided between the first tube (110) and the second tube (120).

3. The special blood collection needle for hemodialysis of claim 1, wherein the width of the catching groove (142) gradually increases or gradually decreases from one end to the other end.

4. The blood collection needle for hemodialysis of claim 2, wherein the tube adapter (210) comprises a tube adapter body (211) and an inner tube (212), the tube adapter body (211) is screwed to the second tube (120), the inner tube (212) is disposed inside the tube adapter body (211), the inner tube (212) can be inserted into the second tube (120), and the inner tube (212) is communicated with the third tube (220).

5. The blood collection needle for hemodialysis of claim 4, wherein a sealing gasket (213) is provided at a connection between the tube connector body (211) and the inner tube (212), and the sealing gasket (213) is fitted to the inner tube (212).

6. The blood collection needle for hemodialysis of claim 4, wherein a second hand-held portion (240) is provided between the tube joint body (211) and the third tube (220).

7. The blood collection needle for hemodialysis of claim 6, wherein the first hand-held part (130) and the second hand-held part (240) are provided with anti-slip pads or printed with anti-slip stripes, and the anti-slip pads are rubber pads.

8. The blood collection needle for hemodialysis of claim 1, wherein the test tube needle (230) comprises a test tube needle holder (231) and a test tube needle body (232), the test tube needle holder (231) is connected to the third conduit (220), the test tube needle body (232) is connected to the third conduit (220), and the test tube needle body (232) is fixedly connected to the test tube needle holder (231).

9. The special blood collection needle for hemodialysis of claim 8, wherein the edges of the tube clamp main body (141) and the tube needle holder (231) are chamfered with a circular arc.

10. The special blood taking needle for hemodialysis of claim 8, wherein an external thread is formed at the end of the test tube needle holder (231), a test tube needle sheath (233) is connected to one end of the test tube needle holder (231) in a threaded manner, and the test tube needle sheath (233) is slidably sleeved on the test tube needle body (232).

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