CN213217038U - Adjustable blood taking needle - Google Patents

Abstract

The utility model discloses an adjustable blood taking needle, which comprises a top pressing structure, a blood taking needle body, a supporting plate and an outer shell, wherein the top pressing structure comprises a top plate and two elastic clamping plates, and the bottom of each elastic clamping plate is provided with a clamping jaw; the blood taking needle body is positioned between the two elastic clamping plates and comprises a spring, a base and a blood taking needle; the outer shell is sleeved outside the support plate and the blood taking needle main body, and a through hole for the blood taking needle to pass through is formed in the bottom of the outer shell; the bottom of the supporting plate is abutted against the inner bottom surface of the outer shell, and the supporting plate is provided with two inclined edges for supporting the clamping jaws of the elastic clamping plate; a limiting hole is formed in the side wall, close to the bottom, of the outer shell, and a limiting baffle used for limiting the descending height of the blood taking needle is detachably connected in the limiting hole. The utility model discloses an adjustable blood taking needle can carry out the adjustment of the degree of depth of penetration to the painful sensitivity of patient and the characteristics of patient's finger tip skin stratum corneum thickness to reduce the painful sense of patient.

Description

Adjustable blood taking needle

Technical Field

The utility model relates to the field of medical equipment, more particularly, the utility model relates to an adjustable blood taking needle.

Background

At present, the clinical application of the disposable blood taking needle is mainly to obtain a blood sample by puncturing the capillary vessel at the tail end of a finger. The main principle of the blood sampling device is to rapidly prick a needle to sample blood by utilizing the expansion characteristic of a spring, and because the speed is extremely high and the needle head is extremely thin, a blood-sampled person is slightly painful or painless. At present, the blood taking needle is widely applied to patients of all ages, and obvious pain and discomfort are still reflected when the disposable blood taking needle is used for infants and patients sensitive to pain.

Disclosure of Invention

For solving current disposable blood sampling to infant and painful sensitive patient and react obvious pain and uncomfortable problem of feeling at the blood sampling in-process, the utility model discloses creatively provide an adjustable blood taking needle, can indicate end skin cuticle thin and thick characteristics to the patient, carry out the adjustment of the degree of depth of puncture to reduce the painful sense of patient.

In order to achieve the technical purpose, the utility model discloses an adjustable blood taking needle, which comprises a top pressing structure, a blood taking needle body, a supporting plate and an outer shell, wherein the top pressing structure comprises a top plate and two elastic clamping plates, the top of each elastic clamping plate is fixedly connected with the top plate, the two elastic clamping plates are symmetrically arranged at the position close to the outer edge of the top plate, and the bottom of each elastic clamping plate is provided with a clamping jaw; the blood taking needle body is positioned between the two elastic clamping plates and comprises a spring, a base and a blood taking needle, the top of the spring is connected with the top plate, the bottom of the spring is connected with the top of the base, the bottom of the base is connected with the blood taking needle, and the base is clamped between the jaws of the two elastic clamping plates; the outer shell is sleeved outside the supporting plate and the blood taking needle body, and a through hole for the blood taking needle to pass through is formed in the bottom of the outer shell; the bottom of the supporting plate is abutted against the inner bottom surface of the outer shell, and the supporting plate is provided with two inclined edges for supporting the clamping jaws of the elastic clamping plate; the two elastic clamping plates of the top pressing structure are respectively provided with a first bulge, the outer shell is provided with a second bulge matched with the first bulge, and the second bulge is positioned above the first bulge; the lateral wall of the outer shell body close to the bottom is provided with a limiting hole, and a limiting baffle used for limiting the descending height of the blood taking needle is detachably connected in the limiting hole.

Further, the base of the blood taking needle body is of a cross structure.

Further, the thickness of the base is smaller than that of the elastic clamping plate.

Furthermore, a rectangular plate is arranged below the bevel edge of the supporting plate, and a supporting plate perpendicular to the surface of the supporting plate is arranged on the rectangular plate.

Furthermore, the relation between the distance d1 from the limiting hole to the bottom of the outer shell and the length d2 of the blood taking needle is that d1/d2 is more than or equal to 0.3 and less than or equal to 0.7.

Further, the relation between the distance d1 from the limiting hole to the bottom of the outer shell and the length d2 of the blood taking needle is d1/d2 equal to 0.5.

Further, the distance d1 between the limiting hole and the bottom of the outer shell is 0.5 cm.

Furthermore, a plurality of limiting holes with different heights are formed in the side wall, close to the bottom, of the outer shell.

Further, a sealing film is arranged at the through hole of the outer shell.

The utility model has the advantages that:

(1) the utility model provides an adjustable blood taking needle is owing to set up the limit baffle who is used for restricting the blood taking needle descending height to this limit baffle can self-adaptation adjustment height, makes the blood taking needle can carry out the adjustment of the depth of penetration, thereby reduces the painful sense of patient.

(2) The utility model provides an adjustable blood taking needle makes limit baffle prevent the blood taking needle main part to fall down completely through pressing limit baffle button, simple structure, the operation of being convenient for.

(3) The utility model provides an adjustable blood taking needle just can accomplish the blood sampling function through pressing the top and pressing the structure, and the blood sampling is convenient.

(4) The utility model provides an adjustable blood taking needle is relatively clean in making the closed space owing to set up the seal membrane, has guaranteed that the blood taking needle avoids unnecessary to pollute before the blood sampling.

Drawings

FIG. 1 is a schematic view of an adjustable lancet with a spring in a compressed state.

Fig. 2 is a schematic structural view of a limit baffle of an adjustable blood taking needle in a vacant state.

FIG. 3 is a schematic view of a pressing state of a limit baffle of the adjustable blood lancet.

FIG. 4 is a schematic structural view of an adjustable blood taking needle with a plurality of limiting holes.

In the figure, 1, a top pressing structure; 2. a lancet body; 3. a support plate; 4. an outer housing; 5. A limit baffle; 11. a top plate; 12. an elastic splint; 21. a spring; 22. a base; 23. a blood collection needle; 31. a bevel edge; 32. a support plate; 41. a second protrusion; 42. a limiting hole; 43. a through hole; 44. A sealing film; 121. a first protrusion; 122. a claw is provided.

Detailed Description

The adjustable blood taking needle provided by the invention is explained and explained in detail below with reference to the attached drawings of the specification.

As shown in fig. 1, 2 and 3, the present embodiment specifically discloses an adjustable lancet, which includes a top pressing structure (1), a lancet body (2), a support plate (3) and an outer case (4).

The top pressing structure (1) comprises a top plate (11) and two elastic clamping plates (12), the top of the elastic clamping plates (12) is fixedly connected with the top plate (11), the two elastic clamping plates (12) are symmetrically arranged at the position, close to the outer edge, of the top plate (11), the bottom of each elastic clamping plate (12) is a clamping jaw (122), the top plate (11) is rectangular, the two elastic clamping plates (12) and the top plate (11) are integrally formed, the width of each elastic clamping plate (12) is smaller than that of the top plate (11), and the clamping jaws (122) bend towards the center direction of the adjustable blood taking needle.

The blood taking needle body (2) is positioned between the two elastic clamping plates (12), and the blood taking needle body (2) comprises a spring (21), a base (22) and a blood taking needle (23). The top of the spring (21) is connected with the top plate (11), the bottom of the spring (21) is connected with the top of the base (22), the bottom of the base (22) is connected with the blood taking needle (23), and the base (22) is clamped between the clamping jaws (122) of the two elastic clamping plates (12). The base (22) of the blood taking needle body (2) is of a cross structure, the diameter of the base (22) in the horizontal direction is basically the same as the distance between the two elastic clamping plates (12), and the two ends of the base (22) in the horizontal direction can be clamped between clamping claws (122) of the two elastic clamping plates (12), so that the spring (21) is in a compressed state. The top of the spring (21) can be fixedly connected with the top plate (11) or detachably connected through a clamping structure, and the bottom of the spring (21) can be fixedly connected with the top of the base (22) or detachably connected through the clamping structure. And the thickness of the base (22) is smaller than that of the elastic clamping plate (12).

The bottom of the support plate (3) is abutted against the inner bottom surface of the outer shell (4), the top of the support plate (3) is close to the top plate (11), and the support plate (3) is provided with two inclined edges (31) used for supporting the clamping jaws (122) of the elastic clamping plate (12). The hypotenuse below of backup pad (3) is the rectangular plate, is provided with extension board (32) of perpendicular to backup pad (3) face on the rectangular plate to extension board (32) are located the edge of rectangular plate towards shell body (4) direction, and its effect is that support this backup pad (3) and stabilize in shell body (4). Because the thickness of the base (22) is smaller than that of the elastic clamping plate (12) and the clamping jaws (122) of the elastic clamping plate (12) can be supported on the inclined edges (31) of the supporting plate (3), after the clamping jaws (122) release the blood taking needle body (2), the blood taking needle body (2) can freely stretch and retract along the supporting plate (3) for blood taking.

The outer shell (4) is sleeved outside the support plate (3) and the blood taking needle main body (2), and a through hole (43) for the blood taking needle (23) to penetrate through is formed in the bottom of the outer shell (4). The top pressing structure comprises a top pressing structure body (1), wherein two elastic clamping plates (12) of the top pressing structure body (1) are respectively provided with a first bulge (121), the outer shell body (4) is provided with a second bulge (41) matched with the first bulge (121), the second bulge (41) is located above the first bulge (121), and the outer shell body (4) and the top pressing structure body (1) form a closed space through the matching of the two bulges.

A limiting hole (42) is formed in the side wall, close to the bottom, of the outer shell (4), and a limiting baffle (5) used for limiting the descending height of the blood taking needle (23) is detachably connected into the limiting hole (42). The limiting baffle (5) has two working modes, namely an idle mode and a pressing mode.

As shown in fig. 2, the limit baffle (5) of the adjustable blood taking needle is in an idle mode, the top pressing structure (1) is pressed, the blood taking needle body (2) is released by the clamping jaw (122), the blood taking needle (23) completely falls under the action of the spring (21), the needle head of the blood taking needle (23) completely penetrates through the through hole (43) for blood taking, and the limit baffle (5) does not prevent the blood taking needle body (2) from falling.

As shown in fig. 3, the limit baffle (5) of the adjustable blood taking needle is in a pressing mode, the top pressing structure (1) is pressed, the blood taking needle body (2) is released by the clamping jaw (122), the blood taking needle (23) falls under the action of the spring (21), and in the falling process of the blood taking needle (23), the upper surface of the limit baffle (5) is in contact with the lower surface of the base (22) to prevent the blood taking needle body (2) from completely falling, so that the blood taking needle can be used for adjusting the puncture depth, and the pain of a patient is reduced.

The position of the limiting hole (42) is related to the length of the blood taking needle (23), the distance from the limiting hole (42) to the bottom of the outer shell (4) is d1, the length of the blood taking needle (23) is d2, and the relation between d1 and d2 is that d1/d2 is more than or equal to 0.3 and less than or equal to 0.7, so that the blood taking needle can be ensured to puncture skin, and the pain of a patient can be reduced. And preferably, the relation between the distance d1 from the limiting hole (42) to the bottom of the outer shell (4) and the length d2 of the blood taking needle (23) is d1/d2 equal to 0.5. Since the length of the blood collection needle (23) is generally 1cm, it is preferable that the distance d1 from the stopper hole (42) to the bottom of the outer case (4) is 0.5 cm.

A sealing film (44) can be arranged at the through hole (43) of the outer shell (4), so that the outer shell (4) and the top pressing structure (1) form a closed space, the inside of the space is relatively clean, and the blood taking needle is prevented from being unnecessarily polluted before blood taking. Before blood sampling, the sealing film (44) is poked to be broken, and blood sampling is carried out after cleaning.

The working principle of the adjustable blood taking needle is to quickly prick and take blood by utilizing the expansion characteristic of the spring. When the top pressing structure (1) is pressed downwards, the clamping jaws (122) slide on the inclined edge (31) of the supporting plate (3), the distance between the two clamping jaws (122) is increased, the clamping jaws (122) are spread, and the blood taking needle (23) is rapidly knocked downwards under the elastic force of the spring (21) to complete the blood taking function. In operation, a blood collector evaluates the thickness characteristic of the cuticle of the finger tip skin of the blood-sampled person to select the puncture depth, and when shallow puncture is required to be selected, a limit baffle (5) button capable of adjusting the side surface of the blood collection needle is pressed down, so that the limit baffle (5) stretches into the outer shell (4) to play a role in preventing the puncture depth of the blood collection needle (23). When shallow puncture does not need to be selected, the button of the limit baffle (5) does not need to be pressed down, and the top pressing structure (1) is directly pressed to finish blood sampling.

The adjustable blood taking needle is disposable, and after each blood taking, the adjustable blood taking needle is directly discarded.

Fig. 4 is a second embodiment of the present invention, which mainly comprises a plurality of spacing holes (42) with different heights disposed on the sidewall of the bottom of the outer housing (4) of the adjustable blood taking needle in the first embodiment, and a spacing baffle (5) can be used for spacing through any spacing hole (42), so that the blood taking needle (23) has different lengths when passing through the through hole (43), and the spacing baffle (5) can be used for self-adapting height adjustment to adapt to patients with different sensitivities.

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", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

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; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, references to the description of the term "the present embodiment," "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, and simple improvements made in the spirit of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides an adjustable blood taking needle, includes that top presses down structure (1), blood taking needle main part (2), backup pad (3) and shell body (4), its characterized in that:

the top pressing structure (1) comprises a top plate (11) and two elastic clamping plates (12), the tops of the elastic clamping plates (12) are fixedly connected with the top plate (11), the two elastic clamping plates (12) are symmetrically arranged at the position, close to the outer edge of the top plate (11), and clamping jaws (122) are arranged at the bottoms of the elastic clamping plates (12);

the blood taking needle body (2) is positioned between the two elastic clamping plates (12), the blood taking needle body (2) comprises a spring (21), a base (22) and a blood taking needle (23), the top of the spring (21) is connected with the top plate (11), the bottom of the spring (21) is connected with the top of the base (22), the bottom of the base (22) is connected with the blood taking needle (23), and the base (22) is clamped between clamping jaws (122) of the two elastic clamping plates (12);

the outer shell (4) is sleeved outside the support plate (3) and the blood taking needle body (2), and a through hole (43) for the blood taking needle (23) to pass through is formed in the bottom of the outer shell (4);

the bottom of the support plate (3) abuts against the inner bottom surface of the outer shell (4), and the support plate (3) is provided with two inclined edges (31) for supporting the clamping jaws (122) of the elastic clamping plate (12);

the two elastic clamping plates (12) of the top pressing structure (1) are respectively provided with a first bulge (121), the outer shell (4) is provided with a second bulge (41) matched with the first bulge (121), and the second bulge (41) is positioned above the first bulge (121);

the blood taking needle is characterized in that a limiting hole (42) is formed in the side wall, close to the bottom, of the outer shell (4), and a limiting baffle (5) used for limiting the descending height of the blood taking needle (23) is detachably connected to the limiting hole (42).

2. The adjustable blood lancet of claim 1,

the base (22) of the blood taking needle body (2) is of a cross structure.

3. The adjustable blood lancet of claim 1,

the thickness of the base (22) is smaller than that of the elastic clamping plate (12).

4. The adjustable blood lancet of claim 1,

the lower part of the bevel edge of the supporting plate (3) is a rectangular plate, and a supporting plate (32) perpendicular to the surface of the supporting plate (3) is arranged on the rectangular plate.

5. The adjustable blood lancet of claim 1,

the distance d1 from the limiting hole (42) to the bottom of the outer shell (4) and the length d2 of the blood taking needle (23) are in a relation of 0.3-0.3, d1/d2 and 0.7.

6. The adjustable blood lancet of claim 5,

the distance d1 between the limiting hole (42) and the bottom of the outer shell (4) and the length d2 of the blood taking needle (23) have the relation that d1/d2 is 0.5.

7. An adjustable blood lancet according to any one of claims 1, 5 or 6,

the distance d1 from the limiting hole (42) to the bottom of the outer shell (4) is 0.5 cm.

8. The adjustable blood lancet of claim 1,

the side wall of the outer shell (4) close to the bottom is provided with a plurality of limiting holes (42) with different heights.

9. The adjustable blood lancet of claim 1,

a sealing film (44) is arranged at the through hole (43) of the outer shell (4).

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