CN216135889U - Peripheral blood collector - Google Patents

Abstract

A peripheral blood collector comprises an inner tube (1), an outer tube (2) and a cover (3), wherein the inner tube (1) is bullet-shaped, the diameter of the bottom of the inner tube is gradually reduced after anticoagulant is sprayed, the diameter of the outer tube (2) is larger than that of the inner tube (1), the bottom of the outer tube (2) is a plane or a hemispherical surface, and a circular connecting part (5) extends radially outside the tube opening of the inner tube (1) and is connected with the outer tube (2) at the tube opening; the lower surface of the cover (3) is provided with a cylindrical sealing part (4), and the sealing part (4) is inserted and connected with the nozzle of the inner pipe (1) in a matching way, so that the cover (3) can open and seal and cover the nozzle of the inner pipe (1). The utility model adopts a double-layer structure with a bullet-shaped smaller inner tube and a larger outer tube, has the advantages of small dead space, convenient bar code label pasting and preservation, capability of meeting the automatic detection requirements of an assembly line and the like, and is more suitable for collecting conventional peripheral blood.

Description

Peripheral blood collector

Technical Field

The utility model belongs to the field of medical instruments, and particularly relates to a peripheral blood collector.

Background

At present, there are a plurality of devices for clinically collecting peripheral blood, but the devices are not ideal:

some hospitals directly collect blood in centrifugal tubes, so that samples of different patients are not convenient to distinguish, and are easy to disorder; if distinguish with the form of current vacuum test tube the same adoption of pasting bar code label sticker, because centrifuging tube diameter, height all are less, then inconvenient pasting, and paste back bar code and produce fold, unevenness very easily, lead to unable scanning, also be convenient for simultaneously place on current test-tube rack, be unfavorable for seeking and preserve. In clinical practice, a cannula method has been tried, blood is collected in a centrifuge tube, the centrifuge tube is inserted into a plastic test tube, and a bar code is attached to the outside of the plastic test tube, so that the bar code is conveniently attached, the bar code is also conveniently scanned and inserted into a test tube rack, and the storage is facilitated. However, the centrifuge tubes are easy to fall off from the plastic test tubes, so that the centrifuge tubes are missed and correspond to each other.

At present, the vacuum blood collection tube for clinically collecting venous blood can be pasted with a bar code which is perfect, flat and beneficial to scanning and is also beneficial to storing samples. However, the dead space is too large, and thus, more peripheral blood must be collected. Peripheral blood is difficult to collect, and the amount of collected blood is limited. After blood collection, the mixing needs to be reversed several times to avoid blood coagulation, and more blood remains on the cover and the tube wall. Resulting in collection of more blood than is conventionally collected and not enough for detection. Therefore, the existing vacuum blood collection tube is not suitable for collecting the conventional peripheral blood.

In conclusion, the problems of too large dead space, inconvenience in bar code pasting, inconvenience in storage and pursuit and the like of equipment for collecting peripheral blood in clinic are urgently needed to be solved.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides a novel peripheral blood collector which comprises an inner tube, an outer tube and a cover, wherein the inner tube is bullet-shaped with the diameter of the bottom gradually reduced, the diameter of the outer tube is larger than that of the inner tube, the bottom of the outer tube is a plane or a hemispherical surface, and the outer side of the orifice of the inner tube is radially extended and provided with a circular connecting part and is connected with the outer tube at the orifice; the lower surface of the cover is provided with a cylindrical sealing part which is inserted and matched with the nozzle of the inner pipe, so that the cover can open and seal the nozzle of the inner pipe.

In a further embodiment, the connecting portion is a circular plate, has an outer diameter not smaller than an inner diameter of the outer tube, and is fixedly connected with or integrally formed with the outer tube at the tube opening.

In another embodiment, the outer edge of the connecting part extends downwards to form an annular edge, and the inner diameter of the annular edge is slightly larger than the outer diameter of the outer pipe; the outer wall of the outer pipe orifice is provided with a first external thread, and the inner wall of the annular edge is provided with a first internal thread matched with the annular edge, so that the inner pipe is detachably connected with the outer cylinder through the first internal thread and the first external thread.

In another embodiment, the outer edge of the connecting portion extends downwards to form an annular edge, the outer wall of the outer tube close to the tube opening is provided with a protruding annular baffle, and the inner wall of the annular edge is provided with an annular clamping groove, the position and the width of the annular clamping groove correspond to those of the annular baffle, so that the annular baffle is clamped in the annular clamping groove.

In another embodiment, the sealing part of the cap is a cylinder with elasticity, and the outer diameter of the sealing part is slightly larger than the inner diameter of the inner tube; the sealing part is inserted into the orifice of the inner pipe and is sealed with the orifice by using the elasticity in the circumferential direction.

Furthermore, the outer edge of the cover is fixedly connected or integrally formed with a bendable connecting belt, and the other end of the connecting belt is fixedly connected or integrally formed with the outer wall of the outer tube or the connecting part.

Further, the upper surface of the lid has a radially projecting flap at least on the side remote from the connecting band.

In a preferred embodiment, the diameter of the upper surface of the cover is larger than the outer diameter of the outer pipe, a through hole is formed in the axis position of the cover and penetrates through the sealing part, the through hole comprises a first through hole part close to the upper surface of the cover and a second through hole part which is the rest part below the first through hole part, the diameter of the first through hole part is larger than that of the second through hole part, and an annular step is formed between the first through hole part and the second through hole part; a penetrable inner core is fixedly arranged in the first part of the through hole, the diameter of the cross section of the inner core is the same as the inner diameter of the first part of the through hole, the height of the inner core is not more than the height of the first part of the through hole, the bottom edge of the inner core is abutted against the step, and the outer side wall of the inner core is fixedly connected with the inner wall of the first part of the through hole; the outer wall of the sealing part is provided with a second external thread which is vertical to the axis, and the inner wall of the pipe orifice of the inner pipe is provided with a second internal thread which is matched with the inner wall in the same direction.

Preferably, the outer tube has a tube wall thickness greater than the tube wall thickness of the inner tube.

Preferably, the outer diameter of the outer tube is 13mm or 16mm, and the height is not less than 75 mm.

Compared with the prior art, the novel peripheral blood collector disclosed by the utility model adopts a double-layer structure with the bullet-shaped smaller inner tube and the larger outer tube, and has the advantages of small dead space, convenience in sticking a bar code label and convenience in storage. In addition, the cover is connected to the inner part of the nozzle of the inner tube in an inserting mode or a threaded mode through the sealing part in a plug mode, blood can flow to the bottom of the tube after being inverted and mixed evenly, and the phenomenon that the blood is adhered to the inner wall of the test tube, the outer thread of the nozzle and the inner wall of the cover in a large amount like an existing vacuum blood collection tube is avoided, so that the required blood collection amount is reduced, and the cover is more suitable for collecting conventional peripheral blood. The through hole inner core of the novel peripheral blood collector can be punctured by an instrument sampling needle without opening a cover, and can be used for automatic blood sampling and detection of the instrument. Simultaneously, because above-mentioned structure adopts this novel tip blood collector to collect the blood sample, and the blood volume can alleviate by blood sampling person (patient) misery less, alleviates blood sampling person (doctor) intensity of labour, does benefit to discernment, scanning, can reduce the mistake, conveniently seeks, does benefit to the saving, reduces personnel and infects the probability, reduces environmental pollution, simple structure, and it is swift, convenient, practical, safety to use. The novel peripheral blood collector can also be used for automatic on-machine detection or assembly line.

Drawings

Fig. 1 is a schematic cross-sectional view of an embodiment of the present invention.

Fig. 2 is a schematic perspective view of another embodiment of the present invention.

Fig. 3 is a schematic perspective view of another embodiment of the present invention.

Fig. 4 is a schematic cross-sectional structure of another embodiment of the present invention.

The labels in the figures illustrate:

1: an inner tube; 2: an outer tube; 3: a cover; 4: a sealing part; 5: a connecting portion; 6: an annular rim; 7: a first internal thread; 8: a first external thread; 9: an annular neck; 10: an annular baffle; 11: a connecting belt; 12: a baffle plate; 13: a through-hole first portion; 14: a through hole second portion; 15: an inner core; 16: a second external thread; 17: a second internal thread; 18: a bar code label.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

Please refer to fig. 1. The utility model discloses a novel peripheral blood collector, which comprises an inner tube 1, an outer tube 2 and a cover 3. The inner tube 1 is bullet-shaped with a diameter of the bottom portion sprayed with anticoagulant and is substantially smaller in inner diameter and length than the outer tube 2. The pipe diameter of outer tube 2 is greater than inner tube 1, and the bottom of outer tube 2 is the plane or hemisphere face, and 1 mouth of pipe outside radial extension of inner tube is provided with annular connecting portion 5 and is connected in mouth of pipe department with outer tube 2. The lower surface of the cover 3 has a cylindrical sealing portion 4 which is fittingly inserted or screwed into the nozzle of the inner tube 1 so that the cover 3 can open and seal the nozzle of the inner tube 1. For the convenience of practical clinical operation, the outer tube 2 can be a vacuum blood collection tube in the prior art, so that on one hand, the label such as bar code label 18 is convenient to be pasted on the outer side of the vacuum blood collection tube, and on the other hand, because the inner volume of the inner tube 1 is obviously smaller than that of the outer tube 2, the dead volume in the inner tube 1 is small, and the detection can be carried out by using a smaller amount of blood samples.

More specifically, the connecting portion 5 is a circular plate integrally formed with the inner tube 1, has an outer diameter equal to that of the outer tube 2, and is fixed to the outer tube 2 along the upper edge of the tube opening. Or the outer diameter of the annular plate-shaped connecting part 5 is equal to the inner diameter of the outer pipe 2 and is fixedly connected with the inner wall of the pipe orifice of the outer pipe 2. Here, the annular connecting portion 5 and the outer pipe opening may be bonded or integrally formed.

Preferably, the inner tube 1 is detachably connected to the outer tube 2. In a specific embodiment, as shown in fig. 2, the outer edge of the connecting portion 5 extends downward to form an annular edge 6, and the inner diameter of the annular edge is slightly larger than the outer diameter of the outer tube 2; the outer wall of the opening of the outer pipe 2 is provided with a first external thread 8, and the inner wall of the annular edge 6 is provided with a first internal thread 7 matched with the first external thread, so that the inner pipe 1 and the outer pipe 2 are fixed through threaded connection.

In another embodiment, as shown in fig. 3, an annular edge 6 extends downward from the outer edge of the connecting portion 5, a protruding annular baffle 10 is provided on the outer wall of the outer tube 2 near the nozzle, and an annular locking groove 9 corresponding to the annular baffle 10 in position and width is provided on the inner wall of the annular edge 6, so that the inner tube 1 and the outer tube 2 are fixed in a snap-fit manner.

It will be appreciated that existing blood collection tubes, such as commonly used vacuum blood collection tubes, are substantially identical in construction to the outer tube 2 shown in figure 2, i.e. having external threads on the outer wall at the mouthpiece and an annular baffle below the external threads. Therefore, to above-mentioned two kinds of inner tubes 1 and the detachable scheme of outer tube 2, can regard as outer tube 2 with current vacuum blood collection tube, remove its original tube cap, install inner tube 1 on it through the mode of screw thread or buckle, use more nimble and low in production cost like this. The pipe diameter specification of present commonly used vacuum test tube is unified to 13mm or 16mm two kinds, and the external screw thread on it is also specific specification with the shape, size, the position etc. of ring baffle 10, consequently can be with the size design of inner tube 1 connecting portion 5 with present vacuum test tube size phase-match, set up first internal thread 7 or ring groove 9's size and position to be unanimous with the vacuum test tube. Thus, the present invention can be used as an outer tube 2 using an existing vacuum blood collection tube. Therefore, the device can be matched with the existing vacuum blood sampling tube for loading and automatic detection, and can also be applied to production lines.

The cover 3 may be generally divided into an upper half and a lower half, the lower half of which protrudes downward from the lower surface of the cover 3 to form a sealing portion 4. The sealing part 4 is inserted or screwed in the inner part of the nozzle of the inner pipe 1 to form a seal. The sealing part 4 is arranged inside the inner tube opening instead of outside, so that the blood in the inner tube opening can be ensured to flow to the bottom of the tube after being reversely mixed, the sealing part is not the same as the prior art, more samples are adhered to the outer tube opening and the inner wall of the cover, the required blood sampling amount is reduced, the pain of a blood-sampled person (patient) is relieved, the labor intensity of the blood-sampled person (doctor) is relieved, the sealing part is easier to be accepted by both the doctor and the patient, disputes are reduced, harmony is promoted, and the sealing part is more suitable for collecting conventional peripheral blood.

Specifically, in one embodiment, the sealing portion 4 is an elastic cylindrical shape, the outer diameter of the sealing portion is slightly larger than the inner diameter of the inner tube 1, after the sealing portion is inserted into the orifice of the inner tube 1, the sealing portion 4 is elastically compressed, and the circumferential elasticity is utilized to push against the inner wall of the orifice around, so that the sealing connection with the orifice is formed. As a modification, as shown in fig. 1 and 2, the sealing part 4 may be configured as a cylinder with rubber as a sealing inner core, so that while the nozzle is sealed, a sharp instrument such as a needle tip may penetrate from the cover 3 and penetrate through the hollow part of the sealing part 4 directly into the inner tube for sampling.

In a further embodiment, as shown in fig. 2, a bendable connecting band 11 is fixedly connected or integrally formed on one side of the outer surface of the upper half of the cover 3, and the other end of the connecting band 11 is fixedly connected or integrally formed with the outer wall of the connecting portion 5. It will be understood that the manner of connecting the cap 3 to the test tube is described here by way of example only and is not limited thereto. Connect lid 3 and the arbitrary part of test tube together, avoid lid 3 to drop and cause the pollution.

It is further preferred that the upper surface of the lid 3, as shown in figures 1 and 2, has a radially projecting flap 12 on the side remote from the connecting strip 11. After closing, the edge of the flap 12 protrudes beyond the edge of the outer tube 2, so that in use the flap 12 can be moved to facilitate opening of the lid 3. In a further embodiment, there are flaps 12 in all directions, forming a ring around the lid 3; the concrete mode of conveniently pulling the cover can be realized.

In another preferred embodiment, referring to fig. 3 and 4, the diameter of the upper half part of the cover 3 is greater than or equal to the outer diameter of the outer tube 2, i.e. the sampling tube orifice is completely covered; a through hole is arranged at the axle center of the cover 3 and penetrates through the sealing part 4. The through hole comprises a first through hole part 13 close to the upper surface of the cover 3 and a second through hole part 14 which is in the shape of a cylinder and is arranged below the first through hole part 13, the diameter of the first through hole part 13 is larger than that of the second through hole part 14, and an annular step is formed between the first through hole part and the second through hole part 14; a pierceable inner core 15 is fixedly arranged in the first part 13 of the through hole; the inner core 15 may be made of, for example, medical rubber, latex, etc., and has the same shape and cross-sectional size as the shape and inner size of the first portion 13 of the through hole, and the height is not greater than the height of the first portion 13 of the through hole, so that the outer sidewall of the inner core 15 is fixedly connected with the inner wall of the first portion 13 of the through hole. The bottom edge of the inner core 15 is abutted to the step, and the step is utilized to ensure that the inner core 15 cannot slide down into the test tube, so that the use safety is guaranteed. The outer wall of the sealing part 4 is provided with a second external thread 16 vertical to the axis, and the inner wall of the orifice of the inner pipe 1 is provided with a second internal thread 17 matched with the second external thread in the same direction. This enables the cap 3 to be screwed into the orifice of the inner tube 1 like a bolt to form a seal.

It is further preferred that, as shown in fig. 3, the outer side wall of the upper half of the lid 3 is provided with a plurality of vertical ribs for preventing slipping and facilitating screwing and unscrewing of the lid 3.

The collector tube body of the utility model can be directly placed on the conventional blood analyzer, and the sample suction tube on the analyzer can automatically suck and automatically detect through the inner core 15 when the sample suction tube punctures, so that the automation degree can be improved, the labor is saved, the labor intensity is reduced, and the speed is increased. The cover opening procedure can be omitted, the pollution is avoided, and the time and the labor are saved. In the puncturing process, the annular step can further prevent the inner core 15 from moving downwards on the basis of edge gluing fixation, so that puncturing is more convenient, and the situation that the inner core 15 enters the through hole second part 14 and then falls into the inner tube 1 to pollute a blood sample cannot occur.

Preferably, the outer diameter of the outer tube 2 is 13mm or 16mm, and the height is not less than 75 mm. The optimal size is suitable for sticking the bar code label 18, the bar code label is easy to stick and flatten, the scanner is easy to scan and identify, the existing automatic labeling machine can be used for automatically sticking the bar code label 18 by a machine, the labor is saved, the speed is improved, the automation degree is improved, and the accuracy is improved; meanwhile, the size is convenient to place in the existing test tube rack for storage.

Preferably, the inner tube 1 has a wall thickness consistent with that of the existing conventional blood collection tube, and the outer tube 2 has a wall thickness greater than that of the inner tube 1. Can directly pass through the laser marking bar code with current laser marking machine on the outer wall of thick outer tube 2 like this, save paper and glue, environmental protection more, and can guarantee that information is errorless, avoid making thoughtlessly, it is more accurate to improve the safety in utilization. It will be appreciated that the outer tube 2 is relatively thick and is not easily penetrated by the laser, and the inner tube 1 therein ensures a perfect seal without causing leakage of the blood sample. It should be understood that the present invention has been described herein only by way of example, and it will be obvious to those skilled in the art that equivalent substitutions or changes may be made in accordance with the technical solution of the present invention and its inventive concept, for example, different ways of connecting portions 5 may be used with different ways of caps 3, different sizes of inner tubes 1 may be used with different sizes of vacuum blood collection tubes in the prior art, and all such changes or substitutions shall fall within the scope of the appended claims.

Claims (10)

1. A peripheral blood collector, comprising: the anticoagulant-free anti-freezing device comprises an inner tube (1), an outer tube (2) and a cover (3), wherein the inner tube (1) is bullet-shaped, the diameter of the bottom of the inner tube is gradually reduced after anticoagulant is sprayed, the diameter of the outer tube (2) is larger than that of the inner tube (1), the bottom of the outer tube (2) is a plane or a hemispherical surface, and a circular connecting part (5) extends radially outside the tube opening of the inner tube (1) and is connected with the outer tube (2) at the tube opening; the lower surface of the cover (3) is provided with a cylindrical sealing part (4), and the sealing part (4) is inserted and connected with the nozzle of the inner pipe (1) in a matching way, so that the cover (3) can open and seal and cover the nozzle of the inner pipe (1).

2. The peripheral blood collector of claim 1, wherein: the connecting part (5) is in a shape of a circular ring plate, the outer diameter of the connecting part is not smaller than the inner diameter of the outer pipe (2), and the connecting part and the outer pipe (2) are fixedly connected at the position of a pipe orifice or integrally formed.

3. The peripheral blood collector of claim 1, wherein: the outer edge of the connecting part (5) extends downwards to form an annular edge (6), and the inner diameter of the annular edge is slightly larger than the outer diameter of the outer pipe (2); the outer wall of the pipe opening of the outer pipe (2) is provided with a first external thread (8), the inner wall of the annular edge (6) is provided with a first internal thread (7) matched with the annular edge, and therefore the inner pipe (1) is detachably connected with the outer pipe (2) in a threaded mode through the first internal thread (7) and the first external thread (8).

4. The peripheral blood collector of claim 1, wherein: the outer edge of the connecting portion (5) extends downwards to form an annular edge (6), a protruding annular baffle (10) is arranged on the outer wall, close to the pipe orifice, of the outer pipe (2), and an annular clamping groove (9) is arranged on the inner wall of the annular edge (6), wherein the position and the width of the annular clamping groove correspond to those of the annular baffle (10), so that the annular baffle (10) is clamped in the annular clamping groove (9).

5. A peripheral blood collector as claimed in any one of claims 1 to 4, wherein: the sealing part (4) of the cover (3) is elastic cylindrical, and the outer diameter of the sealing part is slightly larger than the inner diameter of the inner tube (1); the sealing part (4) is inserted into the pipe orifice of the inner pipe (1) and is sealed with the pipe orifice by using circumferential elasticity.

6. The peripheral blood collector of claim 5, wherein: the outer edge of the cover (3) is fixedly connected or integrally formed with a bendable connecting belt (11), and the other end of the connecting belt (11) is fixedly connected or integrally formed with the outer tube (2) or the outer wall of the connecting part (5).

7. The peripheral blood collector of claim 6, wherein: the upper surface of the cover (3) is provided with a blocking piece (12) protruding in the radial direction at least at one side far away from the connecting belt (11).

8. A peripheral blood collector as claimed in any one of claims 1 to 4, wherein: the diameter of the upper surface of the cover (3) is larger than the outer diameter of the outer pipe (2), a through hole is formed in the axis position of the cover (3), the through hole penetrates through the sealing part (4), the through hole comprises a first through hole part (13) close to the upper surface of the cover (3) and a second through hole part (14) which is the rest below the through hole part, the diameter of the first through hole part (13) is larger than that of the second through hole part (14), and an annular step is formed between the first through hole part and the second through hole part;

a penetrable inner core (15) is fixedly arranged in the through hole first part (13), the cross-sectional diameter of the inner core (15) is the same as the inner diameter of the through hole first part (13), the height of the inner core is not more than the height of the through hole first part (13), the bottom edge of the inner core (15) is abutted to the step, and the outer side wall of the inner core is fixedly connected with the inner wall of the through hole first part (13).

9. A peripheral blood collector as claimed in any one of claims 1 to 4, wherein: the pipe wall thickness of the outer pipe (2) is larger than that of the inner pipe (1).

10. A peripheral blood collector as claimed in any one of claims 1 to 4, wherein: the outer diameter of the outer pipe (2) is 13mm or 16mm, and the height is not less than 75 mm.

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