CN108577862B

CN108577862B - Blood sampling device and blood sampling instrument adopting same

Info

Publication number: CN108577862B
Application number: CN201810052333.7A
Authority: CN
Inventors: 张恒; 吴东凯
Original assignee: Xiangya Hospital of Central South University
Current assignee: Guangdong Gaohang Intellectual Property Operation Co ltd; Rizhao Jinhui Technology Information Consulting Co ltd
Priority date: 2017-12-15
Filing date: 2018-01-19
Publication date: 2020-07-31
Anticipated expiration: 2038-01-19
Also published as: CN108577862A

Abstract

The invention discloses a blood collecting device, which comprises a blood collecting needle, a hose and an air exhaust joint; the air pumping and blood discharging joint comprises a blood discharging channel, an air pumping channel, a blind shaft hole transversely penetrating the blood discharging channel and the air pumping channel and an air vent communicated with the blind shaft hole, wherein a blood inlet of the blood discharging channel is connected with a hose, a blood discharging needle is arranged at a blood outlet, one end of the air pumping channel is provided with the air pumping needle, the other end of the air pumping channel is provided with the air pumping hole, and a rotating shaft valve axially limited is arranged at the blind shaft hole; the rotating shaft part is in sealing fit with the blind shaft hole at the initial position and blocks the blood discharging channel and the air pumping channel; when in a blood discharge position, the first passage is communicated with the blood inlet and the blood outlet, and the second passage is communicated with the air pumping needle and the air pumping port; when the drip-proof position is reached, the blood discharging needle and the air hole are communicated, and the air suction needle and the air suction opening are communicated. Therefore, the problem of blood dripping in the blood sampling process is thoroughly solved, and each detector can take down the blood sampling needle after the blood sampling is finished and can not drip blood. In addition, a full-automatic blood collecting instrument comprising the blood collecting instrument is also provided.

Description

Blood sampling device and blood sampling instrument adopting same

Technical Field

The application relates to the field of medical equipment, in particular to a blood sampling device mainly used for blood collection in health physical examination. The blood collecting device is mainly used for blood collection in health physical examination, and can be used for blood collection required in detection or assay of various diseases.

In addition, the application also relates to a full-automatic blood sampling instrument using the blood sampling instrument.

Background

Along with the development of economy and the improvement of living standard, people pay more and more strong attention to body health, and for example, health physical examination is more and more popular. Venous blood collection is an essential important item in health physical examination, and various blood collecting devices, blood collectors and other equipment are developed successively. For example, chinese patent application publication No. CN 104783811 a discloses an automatic stopper and a blood sampling device including the same, and discloses a three-way blood sampling needle which has a clamping member for clamping a hose to block blood, so as to prevent blood from dripping.

However, in practice, the inventors of the present applicant found that there are the following technical problems: in the up-and-down movement process of the automatic plug pricking device, the blood in the blood discharging needle of the three-way joint is difficult to be prevented from overflowing and dropping due to vibration and other reasons.

Therefore, providing a blood sampling device with better effect of preventing blood from dripping, so that the blood sampling process is safer and more reliable is an important technical problem which needs to be solved urgently by technical personnel in the field.

Disclosure of Invention

The invention aims to provide a blood sampling device, which can conveniently perform blood sampling operation, has simple structure and does not drop blood during use. It is a further object of the present invention to provide a fully automatic lancing device including the above lancing device.

In a first aspect, a blood collecting device is provided, which comprises a blood collecting needle, a hose and an air and blood exhausting joint which are connected in sequence; wherein,

the blood joint is arranged in drawing gas including arranging blood passageway and air exhaust passage, transversely run through arrange the blood passageway with air exhaust passage's cylindric blind shaft hole and with the communicating bleeder vent of this blind shaft hole, arrange blood passageway advance the blood mouth with the hose links to each other, the hemorrhage mouth is equipped with arranges the blood needle, air exhaust passage one end be equipped with arrange the parallel air exhaust needle of blood needle, the other end and be equipped with the extraction opening, blind shaft hole department is equipped with the rotation axis valve that the axial is injectd.

Preferably, the rotary shaft valve comprises a rotary shaft part and a protruding knob head, the rotary shaft part is in sealing fit with the blind shaft hole and blocks the blood discharge channel and the air suction channel when the rotary shaft part is at an initial position, and a first passage for communicating the blood inlet with the blood outlet when the blood discharge position is established, a second passage for communicating the air suction needle with the air suction port when the blood discharge position is established, a third passage for communicating the blood discharge needle with the air vent when the drip-proof position is established, and a fourth passage for communicating the air suction needle with the air suction port when the drip-proof position is established are arranged on the rotary shaft part.

Preferably, the air holes are stepped holes, and filter cotton is arranged at the larger part of the mouth part.

Preferably, the air exhaust port, the blood discharge needle and the air exhaust needle are located in the same plane, the air exhaust port is perpendicular to the air exhaust needle, the rotating shaft portion of the rotating shaft valve, the blood discharge needle and the air exhaust needle are located in the same plane, and the rotating shaft portion of the rotating shaft valve is perpendicular to the air exhaust needle.

Preferably, the first passage is a first cylindrical hole vertically penetrating the rotation shaft portion, the second passage is a second cylindrical hole vertically penetrating the rotation shaft portion, the third passage is a third cylindrical hole vertically penetrating the rotation shaft portion, and the fourth passage is a fourth cylindrical hole vertically penetrating the rotation shaft portion.

Preferably, the second cylindrical hole and the fourth cylindrical hole are located on the same cross section, an included angle between the second cylindrical hole and the fourth cylindrical hole is 60 degrees, and the second cylindrical hole and the fourth cylindrical hole are intersected.

Preferably, two third passages on the air and blood pumping connectors are symmetrically arranged relative to the rotation center of the rotating shaft part.

Preferably, an annular groove portion is arranged at the opening portion of the blind shaft hole, and a convex ring portion which is matched with the annular groove and has a smooth edge is arranged on the rotating shaft portion.

Preferably, the air-pumping and blood-discharging joint is provided with a positioning table for mounting the air-pumping and blood-discharging joint on the blood sampling instrument, and the positioning table is provided with a limiting groove for limiting.

In a second aspect, there is also provided a fully automatic lancing device including the lancing device of any one of the above.

The advantageous effects of some of the inventions in the present application are roughly as follows.

1. The related blood sampling device comprises a blood sampling needle, a hose and an air exhaust joint which are connected in sequence; the air pumping and blood discharging joint comprises a blood discharging channel, an air pumping channel, a cylindrical blind shaft hole transversely penetrating through the blood discharging channel and the air pumping channel, and an air vent communicated with the blind shaft hole, wherein a blood inlet of the blood discharging channel is connected with the hose, a blood discharging needle is arranged at a blood outlet, one end of the air pumping channel is provided with the air pumping needle parallel to the blood discharging needle, the other end of the air pumping channel is provided with the air pumping hole, a rotating shaft valve limited in the axial direction is arranged at the blind shaft hole, and the rotating shaft valve comprises a rotating shaft part and a protruding knob head; when the rotating shaft part is at the initial position, the rotating shaft part is in sealing fit with the blind shaft hole and blocks the blood discharge channel and the air suction channel; when in the blood discharging position, a first passage arranged on the rotating shaft part is communicated with the blood inlet and the blood outlet, and a second passage is communicated with the air pumping needle and the air pumping hole; when the drip-proof position is adopted, the third passage is communicated with the blood discharging needle and the air holes, and the fourth passage is communicated with the air pumping needle and the air pumping hole. Therefore, before the test tube plug of the blood collection tube is pulled out, the blood discharge needle is already in a state without blood, and the blood discharge channel is also blocked by the rotary shaft valve, so that no blood leakage exists before the blood discharge needle is inserted into the test tube plug of the blood collection tube, the test tube plug is pulled out, and the test tube plug of the next blood collection tube is inserted, the problem of blood leakage in the blood collection process is thoroughly solved, and each detector finishes blood collection, takes down the blood collection needle and does not have blood dripping after the blood collection needle.

2. The air holes of the related blood sampling device are stepped holes, and the part with a larger opening part is provided with filter cotton, so that the possible pollution caused by the outside can be effectively prevented. In addition, two third pipelines on the air-pumping blood-discharging joint are symmetrically arranged relative to the rotation center of the rotating shaft part; the symmetry sets up and makes rotatory control more convenient, rotates 180 degrees and can realize the operation of full flow.

The objects, features and aspects of the invention described above can be applied jointly or separately in any combination. Not all objects or features may be required to be combined in each claim.

Drawings

In order to illustrate the embodiments of the claimed invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of some of the inventions, and that other drawings can be obtained by those skilled in the art without inventive effort.

FIG. 1 is a perspective view of an alternative embodiment of a blood collection set provided herein.

Fig. 2 is a schematic cross-sectional view of fig. 1.

FIG. 3 is a schematic cross-sectional view of the removal rotary shaft valve of FIG. 2 with the aspiration needle and the bleed needle.

Fig. 4 is a schematic perspective view of an alternate embodiment of the rotary shaft valve of fig. 1-3.

Fig. 5 is a side view of fig. 4 at an angle.

Detailed Description

In order that those skilled in the art will better understand the technical solutions involved in the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and specific examples. It should be noted that, in a non-conflicting manner, the embodiments and the specific features described in the embodiments in the present application may be combined in any suitable manner; in order to avoid unnecessary repetition, various possible combinations are not described in the present application, and should be considered as disclosed in the present application as long as they do not depart from the gist of the invention.

In a specific embodiment, and as shown in FIGS. 1 and 2, a blood collection device is provided that includes a blood collection needle 10 and a flexible tube 20, a suction and discharge fitting 30, connected in series.

Referring to fig. 1 to 4, the suction and blood-discharge connector 30 includes a blood discharge passage 31 and a suction passage 32, a cylindrical blind shaft hole 33 transversely penetrating the blood discharge passage 31 and the suction passage 32, and a ventilation hole 34 communicating with the blind shaft hole 33, wherein a blood inlet of the blood discharge passage 31 is connected to the hose 20, a blood discharge needle 35 is disposed at a blood outlet of the blood discharge passage 31, a suction needle 36 parallel to the blood discharge needle 35 is disposed at one end of the suction passage 32, a suction opening 37 is disposed at the other end, and a rotating shaft valve 38 axially limited is disposed at the blind shaft hole 33.

As shown in fig. 1 and 2, and fig. 4 and 5, the rotary shaft valve 38 includes a rotary shaft portion 381 and a protruding knob head 382, the rotary shaft portion 381 is sealingly fitted to the blind shaft hole 33 and blocks the blood discharge passage 31 and the air suction passage 32 when the rotary shaft portion 381 is at an initial position, the rotary shaft portion 381 is provided with a first passage 383 for communicating the blood inlet and the blood outlet of the blood discharge passage 31 when at a blood discharge position, a second passage 384 for communicating the air suction needle 36 and the air suction port 37 when at a blood discharge position, a third passage 385 for communicating the blood discharge needle 35 and the air vent 34 when at a drip-proof position, and a fourth passage 386 for communicating the air suction needle 36 and the air suction port 37 when at a drip-proof position.

In a preferred embodiment, referring to fig. 1 and 2 in combination with fig. 4 and 5, the knob head 382 of the rotary shaft valve 38 is in-line, and when in-line is in the vertical direction, the initial position is defined as the initial position, from which the rotary shaft valve 38 is rotated clockwise 60 degrees to define the blood drainage position, and when rotated 60 degrees further to define the drip-proof position, the rotary shaft valve 38 is rotated 60 degrees further to define the closed position. The horizontal line is in a vertical state in the closed position, and the difference between the horizontal line and the horizontal line in the initial position is 180 degrees. In addition, the knob head 382 may also be in the form of various other conventional knobs, and the above-described linear structure is a convenient and simple structure. In addition, regarding the interval of the rotation angle, the above preferred embodiment using the interval of 60 degrees is only an easy way to operate, and for example, the initial position may be rotated by 50 degrees to the blood discharging position, then rotated by 50 degrees to the drip-proof position, and then rotated by 80 degrees to the closed position, or any other suitable combination of angles may be used.

In a preferred embodiment, as shown in fig. 1 and 3, the air hole 34 is a step hole, and a filter cotton is provided at a larger portion of the mouth, and the filter cotton can be replaced by a small filter to prevent external contaminants from entering the blood collection tube during air suction.

In a preferred embodiment, as shown in fig. 1 to 5, the air suction port 37 is located in the same plane as the blood discharging needle 35 and the air suction needle 36, the air suction port 37 is perpendicular to the air suction needle 36, the rotating shaft portion 381 is located in the same plane as the blood discharging needle 35 and the air suction needle 36, and the rotating shaft portion 381 is perpendicular to the air suction needle 36.

In a preferred embodiment, as shown in fig. 2, 4 and 5, the first passage 383 is a first cylindrical hole passing vertically through the rotation shaft 381, the second passage 384 is a second cylindrical hole passing vertically through the rotation shaft 381, the third passage 385 is a third cylindrical hole passing vertically through the rotation shaft 381, and the fourth passage 386 is a fourth cylindrical hole passing vertically through the rotation shaft 381.

In a preferred embodiment, as shown in fig. 4 and 5, the second cylindrical hole and the fourth cylindrical hole are located on the same cross section and intersect, that is, the second passage 384 and the fourth passage 386 are located on the same cross section and intersect, an included angle between the second cylindrical hole and the fourth cylindrical hole is 60 degrees, and the second cylindrical hole and the fourth cylindrical hole intersect. In addition, the specific value of the included angle can be adjusted according to the specific angle of the rotary shaft valve 38 for switching the working position, which is generally determined by the angle of the blood discharging position rotating to the drip-proof position.

In a preferred embodiment, as shown in FIGS. 4 and 5, the third passageways 385 of the evacuation adapter 30 are symmetrically disposed about the rotational center of the shaft portion 381. By this arrangement, the rotary shaft valve 38 is rotated 180 degrees, i.e., a cycle is formed. In this way, control of the rotation of the knob head 382 may be facilitated.

In a preferred embodiment, as shown in fig. 2 to 4, the blind shaft hole 33 has an annular groove 331 at the mouth thereof, and the rotating shaft portion 381 has a convex ring portion 387 with a smooth edge in cooperation with the annular groove 331. This is a relatively simple structure for axially restricting the rotary shaft valve 38, and the axial position of the rotary shaft valve 38 may be restricted by a nut or other fastening member, or may be restricted in the axial direction by other various suitable means.

In a preferred embodiment, as shown in fig. 1, the suction and blood discharge connector 30 is provided with a positioning table 39 for mounting the suction and blood discharge connector on the blood sampling instrument, and the positioning table 39 is provided with a limiting groove 391 for limiting.

In addition, a full-automatic blood sampling instrument is further provided, and the full-automatic blood sampling instrument comprises the blood sampling instrument provided by any one of the embodiments.

The above description of the function or effect of each invention is intended to mean that it has the function or effect, and that it may have other functions or effects, and therefore should not be construed as unduly limiting the function or effect.

The lancet provided by the claimed invention and the fully automatic blood collecting device using the same are described in detail above. The principles and embodiments of the claimed invention have been described herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the claimed invention. It should be noted that while the best modes for carrying out the claimed invention have been described in detail, those familiar with the art to which this invention relates will recognize various alternative designs and embodiments for practicing the claimed invention within the scope of the appended claims.

Claims

1. A blood sampling device, which comprises a blood sampling needle, a hose and an air exhaust and blood discharge joint which are connected in sequence,

the air pumping and blood discharging joint comprises a blood discharging channel, an air pumping channel, a cylindrical blind shaft hole transversely penetrating through the blood discharging channel and the air pumping channel, and an air vent communicated with the blind shaft hole, wherein a blood inlet of the blood discharging channel is connected with the hose, a blood discharging needle is arranged at a blood outlet, one end of the air pumping channel is provided with the air pumping needle parallel to the blood discharging needle, the other end of the air pumping channel is provided with the air pumping hole, and a rotating shaft valve axially limited is arranged at the blind shaft hole;

the swivel spindle valve includes pivot portion and the knob head that stretches out, pivot portion with blind shaft hole leakproofness cooperation is blocked when this pivot portion is in initial position arrange the blood passageway with air exhaust channel, be equipped with in the pivot portion when arranging the blood position intercommunication advance the blood mouth with the first passageway of hemorrhage mouth, communicate when arranging the blood position the needle of bleeding with the second passageway of extraction opening, communicate when antidrip position the needle of bleeding with the third passageway of bleeder vent and communicate when antidrip position the needle of bleeding with the fourth passageway of extraction opening.

2. The lancing device according to claim 1, wherein the vent hole is a stepped hole and a filter cotton is provided at a larger portion of the mouth.

3. The lancing device according to claim 1, wherein the aspiration port is in the same plane as the blood removal needle and the aspiration needle, the aspiration port is perpendicular to the aspiration needle, the shaft of the rotary shaft valve is in the same plane as the blood removal needle and the aspiration needle, and the shaft of the rotary shaft valve is perpendicular to the aspiration needle.

4. The lancing device of claim 1, wherein the first passageway is a first cylindrical hole extending vertically through the shaft portion, the second passageway is a second cylindrical hole extending vertically through the shaft portion, the third passageway is a third cylindrical hole extending vertically through the shaft portion, and the fourth passageway is a fourth cylindrical hole extending vertically through the shaft portion.

5. The lancing device of claim 4, wherein the second cylindrical bore and the fourth cylindrical bore are located on the same cross section, the angle between the second cylindrical bore and the fourth cylindrical bore is 60 degrees, and the second cylindrical bore and the fourth cylindrical bore intersect.

6. The lancing device according to claim 1, wherein two third passages are provided symmetrically with respect to the rotational center of the shaft portion.

7. The lancing device according to claim 1, wherein the blind shaft hole has an annular groove at the mouth thereof, and the shaft portion has a convex ring portion with a smooth edge for engaging with the annular groove.

8. The lancing device according to claim 1, wherein the air exhaust connector is provided with a positioning table for mounting the lancing device thereon, and the positioning table is provided with a limit groove for limiting.

9. A fully automatic lancing device comprising a lancing device, wherein the lancing device is according to any one of claims 1 to 8.