CN209932767U - Hemostix and blood sampling needle - Google Patents

Abstract

The utility model provides a hemostix and blood sampling needle utensil, wherein the hemostix includes: the protective sleeve comprises a sleeve body and an accommodating cavity formed in the sleeve body, wherein a first lock catch is arranged at the first end of the sleeve body; the first end of the puncture needle seat is provided with an elastic part, and after the elastic part is extruded into the accommodating cavity, a second lock catch on the elastic part is matched with a first lock catch on the sleeve body to form a lock catch structure. The locking structure can limit the puncture needle base to move in the axial direction and the circumferential direction relative to the protective sleeve, the structure is simple, the assembly is convenient, and due to the locking structure, when the connecting seat of the blood taking needle is taken down, the puncture needle base cannot be carried out of the protective sleeve, so that the safety is higher.

Description

Hemostix and blood sampling needle

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to hemostix and blood sampling needle utensil.

Background

Venous blood sampling in clinical treatment is a widely used detection method, and ensuring the operation safety in the blood sampling process is an indispensable important condition for blood sampling.

When present clinical blood sampling, the needle file of puncture heparin tube is mostly fixed with mobile spiral buckle fixedly with telescopic cooperation, and these two kinds of modes are all for reaching the purpose of reuse hemostix, nevertheless all have technical defect: when the blood sampling needle seat is unscrewed, the two blood sampling devices have the hidden trouble that the needle seat of the puncture blood sampling tube is jointly withdrawn from the sleeve, and the risk that the needle head punctures the human body outside the sleeve is increased.

Chinese patent document CN203898321U discloses a disposable blood sampling device, which comprises a needle seat and a sleeve of a puncture blood sampling tube with a steel needle and a steel needle sheath, wherein the steel needle and the steel needle sheath are located inside the sleeve, two symmetrical axial stop concave steps are arranged on two sides of the middle part of the needle seat, two symmetrical anti-rotation planes are arranged downwards along the axial stop concave step direction, two symmetrical axial anti-disengagement buckles are arranged on the arc surfaces at two ends of the anti-rotation plane, and an axial limit step, an anti-rotation groove and an axial anti-disengagement arc surface which are respectively matched with the axial stop concave step, the anti-rotation plane and the axial anti-disengagement buckle are arranged on the axial direction of the root of the thread inside the sleeve. According to the patent document, the axial stop concave step and the axial stop buckle on the needle seat are respectively matched with the axial limiting step and the axial stop cambered surface on the sleeve, so that the needle seat and the sleeve can be guaranteed to be fixed in the axial direction, and the stop rotary plane on the needle seat is matched with the stop rotary groove on the sleeve, so that relative rotation between the needle seat and the sleeve can be prevented. Because the relative motion of needle file and sleeve in axial and circumference needs the cooperation of axial locking indent step and the spacing step of axial respectively, axial stop takes off the cooperation of buckle and axial stop-taking off cambered surface, stop the cooperation of revolving the plane and stopping the groove soon and can realize, lead to this hemostix's structure complicacy, inconvenient assembly.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the defect that the hemostix structure is complicated among the prior art, inconvenient assembly to a hemostix and blood sampling needle utensil of simple structure, convenient assembling are provided.

In order to solve the technical problem, the utility model provides a hemostix and blood sampling needle, wherein the hemostix includes:

the protective sleeve comprises a sleeve body and an accommodating cavity formed in the sleeve body, wherein a first lock catch is arranged at the first end of the sleeve body;

the first end of the puncture needle seat is provided with an elastic part, and after the elastic part is extruded into the accommodating cavity, a second lock catch on the elastic part is matched with a first lock catch on the sleeve body to form a lock catch structure.

The first end of the sleeve body is provided with a guide structure for guiding the elastic part to enter the accommodating cavity.

The guide structure is a sliding groove extending along the axial direction.

The first lock catch is a hole-shaped structure arranged on the sliding groove, and the second lock catch is a convex block arranged on the elastic part and matched with the hole-shaped structure.

The elastic part comprises a cylindrical stepped structure and an ear-shaped structure extending outwards from two sides of the cylindrical stepped structure along the radial direction, and the lug is arranged on the ear-shaped structure.

The width of the ear-shaped structure is matched with the width of the sliding groove.

The second end of the puncture needle base is provided with a thread groove.

The top of the first end of the puncture needle base is provided with a connecting structure suitable for being connected with the puncture needle protective sleeve.

The top of the first end of the puncture needle base is provided with a conical boss, and the top end of the puncture needle protective sleeve is clamped between the conical boss and the elastic part.

The utility model provides a pair of blood sampling needle, which comprises a hemostix.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a pair of hemostix, the elastic part of the first end of pjncture needle file gets into the holding intracavity of protective sheath through the extrusion, and the second hasp on the elastic part cooperatees with the first hasp on the cover body of protective sheath and forms the hasp structure, and the hasp structure can restrict pjncture needle file simultaneously for the protective sheath at the motion of axial and circumference, simple structure, convenient assembling, because the setting of hasp structure, when the connecting seat of blood taking needle is taken off, pjncture needle file can not be taken out the protective sheath by even, and is safer.

2. The utility model provides a pair of hemostix, the first end of cover body is equipped with the guide elasticity portion gets into the guide structure in holding chamber makes things convenient for the assembly of pjncture needle file and protective sheath.

3. The utility model provides a pair of hemostix, first hasp is for setting up poroid structure on the spout, the second hasp is for setting up in the elasticity portion with poroid structure matched with lug, simple structure, convenient processing.

4. The utility model provides a pair of hemostix, elasticity portion includes cylinder echelonment structure, and by the ear structure of radial outside extension in the both sides of cylinder echelonment structure, the lug sets up ear structure is last, sets up the intensity that can guarantee the structure like this, has saved the material to a certain extent again.

5. The utility model provides a pair of hemostix, the width of ear-shaped structure with the width phase-match of spout can prevent that the elasticity portion from influencing assembly efficiency at holding intracavity back and forth rotation when assembling.

6. The utility model provides a pair of hemostix, the second end of pjncture needle file is equipped with the thread groove, is connected with other structures when conveniently taking a blood sample.

7. The utility model provides a pair of hemostix, the top of the first end of pjncture needle file is equipped with circular cone boss, the top card of pjncture needle protective sheath is gone into circular cone boss with between the elastic component, can prevent that the pjncture needle protective sheath from dropping from the pjncture needle outward.

8. The utility model provides a pair of blood sampling needle utensil, including the hemostix, this blood sampling needle simple structure is more convenient when the assembly, and when taking off the blood sampling needle file, the pjncture needle file can not be taken over the protective sheath, and is safer.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a blood collection device provided in embodiment 1 of the present invention;

FIG. 2 is a half-sectional view of the blood collection set of FIG. 1;

FIG. 3 is a schematic structural view of a protective cover of the blood collection set shown in FIG. 1;

FIG. 4 is a schematic structural view of a needle holder of the blood collector shown in FIG. 1;

fig. 5 is a schematic structural view of a blood sampling needle provided in embodiment 2 of the present invention.

Description of reference numerals:

1-protective sleeve; 2-puncture needle seat; 3, puncturing needle;

4-puncture needle protective sleeve; 5-a connecting seat; 6-a hose;

7-a clamp; 8-blood taking needle seat; 9-a blood taking needle protecting sleeve;

11-pore structure; 21-a bump; 22-ear structures;

23-thread groove.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", 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 simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

Fig. 1-4 show a blood sampling device in a specific embodiment, which comprises a protective sleeve 1 and a puncture needle hub 2.

Protective sheath 1 including the cover body and formed in this internal holding chamber of cover, the first end of cover body is equipped with the spout as guide structure's the axial extension of edge, be equipped with on the spout as the porous structure 11 of first hasp, the first end of pjncture needle file 2 have including cylindric stair structure and by the both sides of cylinder stair-like structure are along the elastic part of the ear structure 22 of radial outside extension, be equipped with on the ear structure 22 as the second hasp with porous structure 11 matched with lug 21, the elastic part is through the extrusion ear structure 22 gets into behind the holding chamber, second hasp on the elastic part with first hasp cooperation on the cover body forms the hasp structure. In this embodiment, the width of the ear-shaped structure 22 matches the width of the sliding slot, so as to avoid the elastic part rotating back and forth in the accommodating cavity during assembly to affect the assembly efficiency. The top of the first end of pjncture needle file 2 is equipped with circular cone boss, the top card of pjncture needle protective sheath 4 is gone into circular cone boss with between the elastic component, can prevent that pjncture needle protective sheath 4 from dropping from the pjncture needle outward, the second end of pjncture needle file 2 is equipped with the thread groove 23 of conveniently being connected with connecting seat 5.

During the use, install pjncture needle 3 and pjncture needle protective sheath 4 on pjncture needle file 2, the top card of pjncture needle protective sheath 4 is gone into conical boss with between the elastic component, the pjncture needle file 2 that will install pjncture needle 3 and pjncture needle protective sheath 4 is followed the first end of cover body is packed into in the holding chamber, get into completely at pjncture needle 3 behind the holding chamber, the extrusion ear structure 22, and make ear structure 22 is followed the spout gets into in the holding chamber, lug 21 on the ear structure 22 is reacing on the spout during the position of poroid structure 11, lug 21 card is gone into among the poroid structure 11, the assembly is accomplished. The puncture needle base 2 can be limited to move in the axial direction and the circumferential direction relative to the protective sleeve 1 only by arranging the pair of the first lock catch and the second lock catch which are matched with each other, so that the structure is simple, the assembly is convenient, the puncture needle base 2 cannot be brought out of the protective sleeve when the blood taking needle is taken down due to the arrangement of the lock catch structure, and the safety is higher.

In the above embodiment, the cylindrical stepped structure may be replaced by a cylindrical structure, and lug structures 22 are extended radially outwards on both sides of the cylindrical structure.

The sliding groove can be replaced by other guiding structures which can guide the elastic part into the accommodating cavity.

Example 2

Fig. 5 shows a specific embodiment of a blood collection needle device, which includes the blood collection device of embodiment 1, a connection seat 5 connected with the puncture needle seat 2 through a thread, one end of a hose 6 connected to the connection seat 5, the other end connected to a blood collection needle seat 8 with a blood collection needle, a blood collection needle protection sleeve 9 sleeved outside the blood collection needle, and a clamp 7 mounted on the hose 6.

When taking a blood sample, take off blood taking needle protective sheath 9, insert the blood taking needle in human vein, insert the heparin tube in the protective sheath, the needle point of pjncture needle pierces through pjncture needle protective sheath 4 and heparin tube plug and gets into the heparin tube inner chamber, utilize the intraductal negative pressure of taking a blood sample to lead to the heparin tube in with blood, when the blood sampling finishes or needs to change the heparin tube, extract the heparin tube, pjncture needle protective sheath 4 is automatic flexible, the cladding steel needle, can prevent the blood outflow, when taking a blood sample and finishing taking off connecting seat 5 from pjncture needle file 2, pjncture needle file 2 can not taken out, the operation is safer.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (10)

1. A blood sampler, comprising:

the protective sleeve (1) comprises a sleeve body and an accommodating cavity formed in the sleeve body, wherein a first lock catch is arranged at the first end of the sleeve body;

the puncture needle base (2), the first end of puncture needle base (2) has the elasticity portion, the elasticity portion gets into through the extrusion behind the holding chamber, second hasp on the elasticity portion with cover first hasp cooperation on the body forms the hasp structure.

2. A lancing device according to claim 1, wherein the first end of the sleeve body is provided with a guide formation for guiding the resilient portion into the receiving cavity.

3. A lancing device according to claim 2, wherein the guide formation is an axially extending runner.

4. A lancing device according to claim 3, wherein the first catch is a hole (11) provided in the slot and the second catch is a projection (21) provided on the resilient portion which engages with the hole (11).

5. A lancing device according to claim 4, wherein the resilient portion comprises a cylindrical step formation and lug formations (22) extending radially outwardly from either side of the cylindrical step formation, the lugs (21) being provided on the lug formations (22).

6. A lancing device according to claim 5, wherein the lug formation (22) has a width which matches the width of the slot.

7. A lancing device according to claim 1, wherein the second end of the lancet holder (2) is provided with a threaded groove (23).

8. A lancing device according to claim 1, wherein the first end of the lancet holder (2) is provided at the top with a coupling arrangement adapted to engage with a lancet sheath (4).

9. A blood collector as claimed in claim 8, wherein the top of the first end of the puncture needle hub (2) is provided with a conical boss, and the top end of the puncture needle protective sleeve (4) is clamped between the conical boss and the elastic part.

10. A lancet device comprising a device as claimed in any one of claims 1 to 9.

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