CN220876768U - Metering blood sampling device and sample collection instrument - Google Patents
Metering blood sampling device and sample collection instrument Download PDFInfo
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- CN220876768U CN220876768U CN202322141677.4U CN202322141677U CN220876768U CN 220876768 U CN220876768 U CN 220876768U CN 202322141677 U CN202322141677 U CN 202322141677U CN 220876768 U CN220876768 U CN 220876768U
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- 238000010241 blood sampling Methods 0.000 title claims abstract description 30
- 239000008280 blood Substances 0.000 claims abstract description 148
- 210000004369 blood Anatomy 0.000 claims abstract description 148
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000000605 extraction Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000000642 iatrogenic effect Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 210000003462 vein Anatomy 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000003394 haemopoietic effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000023597 hemostasis Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
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- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The utility model discloses a metering blood sampling device and a sample collection instrument, wherein the metering blood sampling device comprises: negative pressure blood sample bottle; a blood taking needle; the metering tube is provided with an exhaust valve and comprises a first connecting tube and a second connecting tube which are oppositely arranged at two ends, the first connecting tube is detachably and closely connected with the negative pressure blood sample bottle, and the second connecting tube is detachably and closely connected with the blood taking needle; the first locking piece is sleeved on the first connecting pipe; and the second locking piece is sleeved on the second connecting pipe. According to the utility model, the metering tube is arranged between the negative pressure blood sample bottle and the blood taking needle, the exhaust valve is arranged on the metering tube, the first locking piece and the second locking piece are arranged at two ends of the metering tube, and when blood taking is carried out, the state of the first locking piece and the state of the second locking piece can be changed, so that a blood sample is firstly collected into the metering tube and then is collected into the negative pressure blood sample bottle, and thus, relatively accurate sample quantity is repeatedly obtained, and the condition of insufficient or excessive blood extraction quantity is avoided.
Description
Technical Field
The utility model relates to the technical field of sample collection, in particular to a metering blood sampling device and a sample collection instrument.
Background
When obtaining blood sample, select venous blood vessel to take a blood sample generally, its reason is that the vein is located the body surface, is convenient for observe with naked eyes, and venous pressure is less, and the laborsaving and be convenient for puncture of drawing blood, and the easy hemostasis after the puncture is accomplished is to infant's infant, obtains the painful degree of blood sample reducible infant through the vein, is convenient for observe infant at blood sampling in-process.
In the prior art, the blood sampling of the infant is realized by matching a blood taking needle (refer to CN 103976748A) with a negative pressure blood sample bottle (refer to CN 103315751A), the problem in the prior art is that because the negative pressure degree is uncontrollable, medical staff is difficult to control the measurement of the blood sample in the negative pressure blood sample bottle, the blood volume of the infant is limited for the infant with low age and weight, the hematopoietic ability is weak, secondary blood drawing is required when the blood sample is insufficient, the infant is painful, and the risk of iatrogenic blood loss of the infant is caused when the blood sample is excessive.
Accordingly, the prior art is still in need of improvement and development.
Disclosure of utility model
In order to solve the problems that in the prior art, when a child with low age and low weight is subjected to blood collection, the negative pressure degree of a negative pressure blood sample bottle is uncontrollable, medical staff is difficult to control the blood collection amount, secondary blood collection is needed when the blood sample collection amount is insufficient, and iatrogenic blood loss of the child is extremely easy to cause when the blood sample collection amount is excessive, the utility model provides a metering blood collection device and a sample collection instrument.
The utility model is realized by the following technical scheme:
A metering blood collection device, wherein the metering blood collection device comprises:
Negative pressure blood sample bottle;
A blood taking needle;
The metering tube is provided with an exhaust valve, the metering tube comprises a first connecting tube and a second connecting tube which are oppositely arranged at two ends, the first connecting tube is detachably and closely connected with the negative pressure blood sample bottle, and the second connecting tube is detachably and closely connected with the blood taking needle;
The first locking piece is sleeved on the first connecting pipe;
the second locking piece is sleeved on the second connecting pipe.
The metering blood sampling device is characterized in that the exhaust valve is a one-way exhaust valve, the exhaust valve is fixedly and penetratingly arranged on one side of the metering tube, a first valve and a second valve are oppositely arranged in the exhaust valve, and the first valve and the second valve are arranged in a mirror image mode along a preset radian and are mutually abutted;
the first valve and the second valve are elastic valves.
The metering blood sampling device is characterized in that the first locking piece is sleeved on the first connecting pipe at a position close to the metering pipe, and the second locking piece is sleeved on the second connecting pipe at a position close to the metering pipe;
The first locking piece and the second locking piece are identical in structure.
The metering blood sampling device, wherein the first locking piece comprises:
The center of the mounting piece is provided with a pipe hole along the thickness direction; a mounting hole is formed in the mounting piece in a penetrating manner along the length direction, and the mounting hole is formed in a penetrating manner with the pipe hole;
The adjusting piece is arranged in the mounting hole in a sliding mode, a yielding hole is formed in the position, corresponding to the pipe hole, of the adjusting piece, a clamping tenon is arranged on one side in the yielding hole, and the clamping tenon is used for changing the shapes of the first connecting pipe and the second connecting pipe.
The metering blood sampling device is characterized in that a first clamping groove and a second clamping groove are formed in one side of the inside of the mounting hole, and the first clamping groove and the second clamping groove are arranged along the direction perpendicular to the penetrating direction of the mounting hole;
One side on the regulating piece is provided with the tenon, the tenon is along perpendicular the direction setting that the mounting hole link up, the tenon with first draw-in groove with the adaptation of second draw-in groove, the tenon is used for limiting the regulating piece is in the position in the mounting.
The metering blood sampling device is characterized in that the first clamping groove and the second clamping groove are arranged at intervals of a preset distance, and the preset distance is larger than or equal to the diameter size of the pipe hole;
The shape of the section of the clamping tenon is isosceles triangle, and the vertex of the section of the clamping tenon is positioned at the center position corresponding to the height direction of the mounting hole.
The metering blood sampling device is characterized in that limiting plates are respectively arranged on two sides of the adjusting piece, and the shape of each limiting plate is matched with the section shape of the mounting piece;
an anti-slip layer is arranged on one side, away from the mounting piece, of the limiting plate;
The limiting plate is used for driving the adjusting piece to directionally slide in the mounting piece.
The metering blood sampling device is characterized in that the negative pressure blood sample bottle is a transparent bottle body, and the metering tube is a transparent metering tube;
The metering tube is provided with a marking part which is used for marking the volume of the blood sample in the metering tube.
The metering blood sampling device comprises a blood sampling needle, a first connecting pipe and a second connecting pipe, wherein the blood sampling needle comprises a connecting cap, a connecting piece is arranged on the second connecting pipe, and the connecting cap is detachably and closely connected with the connecting piece;
One end of the first connecting pipe, which is far away from the metering tube, is connected with the negative pressure blood sample bottle in a plugging manner.
A sample collection device, wherein the sample collection device comprises a metering blood collection set according to any one of the preceding claims.
The utility model has the beneficial effects that: according to the utility model, the metering tube is arranged between the negative pressure blood sample bottle and the blood taking needle, the exhaust valve is arranged on the metering tube, the first locking piece and the second locking piece are arranged at two ends of the metering tube, and when blood taking is carried out, the state of the first locking piece and the state of the second locking piece can be changed, so that a blood sample is firstly collected into the metering tube and then is collected into the negative pressure blood sample bottle, and thus, relatively accurate sample quantity is repeatedly obtained, and the condition of insufficient or excessive blood extraction quantity is avoided.
Drawings
FIG. 1 is a schematic view of the metering blood collection device of the present utility model;
FIG. 2 is an enlarged view of the structure of the A node of the metering blood collecting device of the present utility model in FIG. 1;
FIG. 3 is a cross-sectional view of the closure clip of the present utility model in a locked state;
FIG. 4 is a cross-sectional view of the closure clip of the present utility model in an open state;
fig. 5 is a schematic perspective view of a closure clip of the present utility model.
In fig. 1 to 5: 100. negative pressure blood sample bottle; 200. a blood taking needle; 210. a connecting cap; 300. metering tube; 310. a first connection pipe; 320. a second connection pipe; 321. a connecting piece; 330. an exhaust valve; 331. a first valve; 332. a second valve; 340. a marking part; 400. a first locking member; 410. a mounting member; 411. a first clamping groove; 412. a second clamping groove; 413. pipe holes; 414. a mounting hole; 420. an adjusting member; 421. a relief hole; 422. a clamping tenon; 423. a tenon; 424. a limiting plate; 425. an anti-slip layer; 500. and a second locking member.
Detailed Description
In order to make the objects, technical solutions and effects of the present utility model clearer and more specific, the present utility model will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are involved in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
In the prior art, the blood sampling of the infant is realized by matching a blood taking needle (refer to CN 103976748A) with a negative pressure blood sample bottle (refer to CN 103315751A), the problem in the prior art is that because the negative pressure degree is uncontrollable, medical staff is difficult to control the measurement of the blood sample in the negative pressure blood sample bottle, the blood volume of the infant is limited for the infant with low age and weight, the hematopoietic ability is weak, secondary blood drawing is required when the blood sample is insufficient, the infant is painful, and the risk of iatrogenic blood loss of the infant is caused when the blood sample is excessive.
Based on the above-described problems in the prior art, the present utility model provides a metering blood sampling device, as shown in fig. 1, comprising: negative pressure blood sample bottle 100; a lancet 200; the metering tube 300, is provided with the exhaust valve 330 on the metering tube 300, the metering tube 300 includes the first connecting tube 310 and the second connecting tube 320 which are relatively set up at both ends, the first connecting tube 310 is detachably connected with the negative pressure blood sample bottle 100 in a sealing way, the second connecting tube 320 is detachably connected with the blood taking needle 200 in a sealing way; the first locking piece 400 is sleeved on the first connecting pipe 310; the second locking member 500 is sleeved on the second connection pipe 320.
According to the utility model, the metering tube 300 is arranged between the negative pressure blood sample bottle 100 and the blood taking needle 200, the exhaust valve 330 is arranged on the metering tube 300, the first locking piece 400 and the second locking piece 500 are arranged at two ends of the metering tube 300, and when blood taking is carried out, a blood sample can be collected into the metering tube 300 firstly and then into the negative pressure blood sample bottle 100 by changing the states of the first locking piece 400 and the second locking piece 500, so that relatively accurate sample quantity is repeatedly obtained, and the condition that the blood extraction quantity is insufficient or excessive is avoided.
In the above-described embodiment, as shown in fig. 1, the body of the metering blood sampling device of the present utility model is composed of a negative pressure blood sample bottle 100, a lancet 200 and a metering tube 300, wherein the negative pressure blood sample bottle 100 is a negative pressure blood sample bottle 100 of the prior art, a certain degree of negative pressure is preset inside after the product leaves the factory, and the lancet 200 is similar to the lancet 200 of the prior art, except that the end connected thereto is modified to achieve a tight connection with the metering tube 300. The metering tube 300 is provided with a first connection tube 310 and a second connection tube 320 at opposite ends thereof, wherein the first connection tube 310 is used for connecting the negative pressure blood sample bottle 100, and can be closely connected with the negative pressure blood sample bottle 100, and the second connection tube 320 is used for connecting the blood taking needle 200, and can be closely connected with the blood taking needle 200, so that the negative pressure blood sample bottle 100, the blood taking needle 200 and the metering tube 300 form a whole for obtaining a blood sample.
Further, in order to collect and meter the blood sample in the metering tube 300 during the blood sampling process, and finally collect the blood sample in the negative pressure blood sample bottle 100, in this embodiment, the first connecting tube 310 is further provided with a first locking member 400, the second connecting tube 320 is provided with a second locking member 500, and the first locking member 400 and the second locking member 500 have two states of opening and closing, so as to realize the opening or closing of the first connecting tube 310 and the second connecting tube 320, in addition, in order to realize the function of sucking blood in the metering tube 300, an exhaust valve 330 is further provided on the metering tube 300, and a negative pressure can be formed through the elastic cooperation of the exhaust valve 330 and the metering tube 300, so that the blood sampling needle 200 has the function of sucking the blood sample.
In practical use, the medical staff can close the first locking piece 400 and the second locking piece 500 first and press the metering tube 300, the negative pressure inside the metering tube 300 is caused under the exhaust action of the exhaust valve 330, after the medical staff connects the blood taking needle 200 with the vein of the infant, the second locking piece 500 is opened, the blood sample is sucked into the metering tube 300 for metering under the negative pressure action of the metering tube 300, the second locking piece 500 is closed, after the medical staff reads the volume of the blood sample, the first locking piece 400 is opened, at this time, the blood sample can be collected into the negative pressure blood sample bottle 100 under the negative pressure action of the negative pressure blood sample bottle 100, and meanwhile, the metering tube 300 is made to form negative pressure.
In the above embodiment, the negative pressure blood sample bottle 100 is a transparent bottle body, the metering tube 300 is a transparent metering tube 300, so as to facilitate the medical staff to observe the sucked blood sample volume, thereby visually inspecting the sample volume, in order to make the metering of the metering tube 300 accurate, the metering tube 300 is further provided with the identification part 340, the identification part 340 is specifically composed of a plurality of scale marks, and the metering tube 300 capacity corresponding to the scale marks is identified, thereby realizing the effect of measuring the blood sample volume inside the metering tube 300, it should be noted that in this embodiment, the metering tube 300 should be made of a material with better elastic recovery performance, such as silica gel, rubber, synthetic plastic, etc., during the sucking and measuring process of the blood sample, the metering tube 300 will generate a certain degree of deformation due to the negative pressure in the metering tube 300, thus affecting the accuracy of the measurement of the volume of the blood sample, in this embodiment, the technician can reasonably distribute the material thickness of the metering tube 300 itself, for example, set the material volume of the lower end (the end corresponding to the first connecting tube 310) of the metering tube 300 thicker to have better elastic recovery performance, set the material volume of the upper end (the end corresponding to the second connecting tube 320) of the metering tube 300 thinner to have relatively weak elastic recovery performance, recover the pressure inside the metering tube 300 after the sucking of the blood sample, and recover the lower end of the metering tube 300 to the preset shape first, so that the detection of the volume of the sample is not excessively affected even if there is negative pressure in the metering tube 300, the measurement accuracy error caused by the deformation of the lower end of the measuring tube 300 is negligible.
In another embodiment of the present utility model, as shown in fig. 1 and 2, the exhaust valve 330 is specifically configured as a one-way exhaust valve 330, that is, only has a function of exhausting air from the metering tube 300, in this embodiment, the exhaust valve 330 is fixedly disposed on one side of the metering tube 300 and is disposed through the metering tube 300, the first valve 331 and the second valve 332 are disposed inside the exhaust valve 330, the first valve 331 and the second valve 332 are elastic valves, and are made of elastic materials, the first valve 331 and the second valve 332 are disposed along a predetermined arc, and the first valve 331 and the second valve 332 are abutted against each other in a negative pressure and normal pressure state, so that an effect of sealing the metering tube 300 can be achieved, when a medical staff squeezes the metering tube 300, gas in the metering tube 300 is exhausted from a position between the first valve 331 and the second valve 332, so that the first valve 331 and the second valve 332 are separated, and after the squeezing is finished, the first valve 331 and the second valve 332 are elastically restored to an abutting state, thereby maintaining a negative pressure state in the metering tube 300.
Further, to ensure the accuracy of the metering tube 300 in recording the volume of the blood sample, as shown in fig. 1, in this embodiment, the first locking member 400 is further sleeved on the first connecting tube 310 at a position close to the metering tube 300, and the second locking member 500 is sleeved on the second connecting tube 320 at a position close to the metering tube 300, so as to avoid inaccurate metering caused by excessive volume of the blood sample entering the first connecting tube 310, in this embodiment, the effect of sealing the two ends of the metering tube 300 can be achieved through the first locking member 400 and the second locking member 500, so as to correspond to the effect of adjusting during different operation processes, and the specific adjusting process is described in detail below.
In one embodiment of the present utility model, as shown in fig. 3, 4 and 5, the first locking member 400 and the second locking member 500 have the same structure, and in the following examples, only the structure of the first locking member 400 will be described in detail, and a person skilled in the art can refer to the structure of the first locking member 400 to provide the second locking member 500.
Specifically, the first locking member 400 includes a mounting member 410 and an adjusting member 420, wherein a tube hole 413 is provided at the center of the mounting member 410 in the thickness direction, and the tube hole 413 is used for being combined with the first connecting tube 310, so that the first locking member 400 is sleeved outside the first connecting tube 310; a mounting hole 414 is formed in the mounting member 410 so as to penetrate the mounting hole 414 and the pipe hole 413 in the longitudinal direction, and the mounting hole 414 is used for being combined with the adjusting member 420, so that the adjusting member 420 can slide in the mounting hole 414, and the opening and closing of the first connecting pipe 310 can be adjusted through the limiting function of the adjusting member 420.
The adjusting member 420 is slidably disposed in the mounting hole 414, as shown in fig. 5, a yielding hole 421 is disposed at a position on the adjusting member 420 corresponding to the pipe hole 413, a latch 422 is disposed at one side in the yielding hole 421, and by changing a relative position of the adjusting member 420 in the mounting member 410, a shape of the first connecting pipe 310 can be changed through the latch 422, as shown in fig. 3 and fig. 4, and further, the first connecting pipe 310 can be controlled to be opened or closed, which is worth noting that fig. 3 and fig. 4 are only used for illustrating an adjusting principle of the mounting member 410 and the adjusting member 420 on the first connecting pipe 310, and in actual setting, a person skilled in the art can adjust a position and a size set by the functional component, so as to achieve a better operation effect.
Further, in order to fix the mounting member 410 and the adjusting member 420 at different functional positions, as shown in fig. 3 and 4, in this embodiment, a first slot 411 and a second slot 412 are further provided on one side of the mounting hole 414 in the mounting member 410, the first slot 411 and the second slot 412 are disposed along a direction penetrating the vertical mounting hole 414, correspondingly, a tenon 423 is provided on one side of the adjusting member 420, the tenon 423 is disposed along a direction penetrating the vertical mounting hole 414, the tenon 423 is adapted to the first slot 411 and the second slot 412, and the position of the adjusting member 420 in the mounting member 410 can be limited by the tenon 423.
In this embodiment, as shown in fig. 3, when the tongue 423 on the adjusting member 420 is correspondingly engaged with the second slot 412 on the mounting member 410, the tongue 422 on one side of the relief hole 421 on the adjusting member 420 is abutted against the first connecting tube 310 and deforms the first connecting tube 310, the inside of the deformed first connecting tube 310 is blocked, so as to achieve the effect of closing the first connecting tube 310, correspondingly, as shown in fig. 4, when the tongue 423 on the adjusting member 420 is correspondingly engaged with the first slot 411 on the mounting member 410, the relief hole 421 on the adjusting member 420 corresponds to the relief hole 421 on the mounting member 410, and the first connecting tube 310 is in a free state, i.e. in an open state.
In actual setting, as shown in fig. 3 and 4, the first clamping groove 411 and the second clamping groove 412 are arranged at a predetermined distance, and the predetermined distance is greater than or equal to the diameter size of the pipe hole 413, in the open state of the first locking member 400, the clamping tenon 422 on one side of the abdicating hole 421 on the adjusting member 420 is in a non-stressed abutting state or a slightly stressed abutting state with the outer side of the first connecting pipe 310, so that the normal use of the first connecting pipe 310 is not affected, and in the closed state of the first locking member 400, the clamping tenon 422 on one side of the abdicating hole 421 on the adjusting member 420 forms a closure on the pipe hole 413, and meanwhile, the shape of the first connecting pipe 310 is changed to be closed.
In the above embodiment, as shown in fig. 3, the cross-sectional shape of the latch 422 is isosceles triangle, and the vertex of the cross-section of the latch 422 is located on the center line of the height direction of the corresponding mounting hole 414, which has the advantage that the latch 422 can be conveniently formed to apply force to the first connection pipe 310, thereby facilitating the change of the shape of the first connection pipe 310 and ensuring the effectiveness of the device.
In another embodiment of the present utility model, as shown in fig. 5, limiting plates 424 are further disposed on two sides of the adjusting member 420, the shape of the limiting plates 424 is adapted to the cross-sectional shape of the mounting member 410, in practical use, a medical staff can change the relative position between the adjusting member 420 and the mounting member 410 by pushing the limiting plates 424, in practical setting, an anti-slip layer 425 is disposed on a side of the limiting plates 424 away from the mounting member 410, and the anti-slip layer 425 can facilitate the single-hand operation of the medical staff, thereby ensuring the fixation of the force application point and preventing slipping.
In this embodiment, the position of the adjusting member 420 in the mounting member 410 is asymmetric, that is, the exposed dimension of the adjusting member 420 with respect to the mounting member 410 is different in the opened and locked states, so as to facilitate the medical staff to distinguish the opened and locked states of the first locking member 400, thereby facilitating the rapid operation in the process of obtaining the blood sample.
In another embodiment of the present utility model, as shown in fig. 1, in order to connect the lancet 200 with the metering tube 300, in this embodiment, a connection cap 210 is further provided at one end of the lancet 200, a connection member 321 is provided on the second connection tube 320, and the connection cap 210 and the connection member 321 are detachably and closely connected, specifically, may be provided by screwing, sleeving, and the like, which is not limited to this embodiment.
Based on the above embodiments, the actual usage process of the metering blood sampling device of the present utility model is as follows:
First, as shown in fig. 1, a medical staff connects the negative pressure blood sample bottle 100, the lancet 200, and the metering tube 300, respectively, and puts the first locking member 400 and the second locking member 500 in a closed state with respect to the first connection tube 310 and the second connection tube 320, presses the metering tube 300, and causes the metering tube 300 to form a negative pressure by the exhaust valve 330.
The blood taking needle 200 is used for puncturing the infant, the metering tube 300 is placed in a vertical state, the second locking piece 500 is opened to enable the blood sample to enter the metering tube 300, after the blood sample reaches a certain amount on the identification part 340, the second locking piece 500 is closed, and the blood sample amount is recorded; the first locking member 400 is opened to allow the recorded blood sample volume to enter the negative pressure blood sample bottle 100 to complete the obtaining of a quantitative blood sample.
When the blood sample volume obtained in a single time is insufficient, the metering tube 300 can reform the negative pressure after the blood sample enters the negative pressure blood sample bottle 100, at this time, the first locking member 400 can be closed, and the second locking member 500 can be opened again to continue to draw the blood sample, thereby realizing the effect of precisely controlling the blood drawing volume.
Based on the above embodiments, the present utility model also provides a sample collection apparatus including the metering blood collection device of any one of the above embodiments, the metering blood collection device comprising: negative pressure blood sample bottle; a blood taking needle; the metering tube is provided with an exhaust valve and comprises a first connecting tube and a second connecting tube which are oppositely arranged at two ends, the first connecting tube is detachably and closely connected with the negative pressure blood sample bottle, and the second connecting tube is detachably and closely connected with the blood taking needle; the first locking piece is sleeved on the first connecting pipe; and the second locking piece is sleeved on the second connecting pipe. According to the utility model, the metering tube is arranged between the negative pressure blood sample bottle and the blood taking needle, the exhaust valve is arranged on the metering tube, the first locking piece and the second locking piece are arranged at two ends of the metering tube, and when blood taking is carried out, the state of the first locking piece and the state of the second locking piece can be changed, so that a blood sample is firstly collected into the metering tube and then is collected into the negative pressure blood sample bottle, and thus, relatively accurate sample quantity is repeatedly obtained, and the condition of insufficient or excessive blood extraction quantity is avoided.
In summary, the present utility model provides a metering blood sampling device and a sample collection apparatus, wherein the metering blood sampling device includes: negative pressure blood sample bottle; a blood taking needle; the metering tube is provided with an exhaust valve and comprises a first connecting tube and a second connecting tube which are oppositely arranged at two ends, the first connecting tube is detachably and closely connected with the negative pressure blood sample bottle, and the second connecting tube is detachably and closely connected with the blood taking needle; the first locking piece is sleeved on the first connecting pipe; and the second locking piece is sleeved on the second connecting pipe. According to the utility model, the metering tube is arranged between the negative pressure blood sample bottle and the blood taking needle, the exhaust valve is arranged on the metering tube, the first locking piece and the second locking piece are arranged at two ends of the metering tube, and when blood taking is carried out, the state of the first locking piece and the state of the second locking piece can be changed, so that a blood sample is firstly collected into the metering tube and then is collected into the negative pressure blood sample bottle, and thus, relatively accurate sample quantity is repeatedly obtained, and the condition of insufficient or excessive blood extraction quantity is avoided.
It is to be understood that the utility model is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.
Claims (10)
1. A metering blood collection device, the metering blood collection device comprising:
Negative pressure blood sample bottle;
A blood taking needle;
The metering tube is provided with an exhaust valve, the metering tube comprises a first connecting tube and a second connecting tube which are oppositely arranged at two ends, the first connecting tube is detachably and closely connected with the negative pressure blood sample bottle, and the second connecting tube is detachably and closely connected with the blood taking needle;
The first locking piece is sleeved on the first connecting pipe;
the second locking piece is sleeved on the second connecting pipe.
2. The metering blood sampling device according to claim 1, wherein the exhaust valve is a one-way exhaust valve, the exhaust valve is fixedly and penetratingly arranged on one side of the metering tube, a first valve and a second valve are oppositely arranged in the exhaust valve, and the first valve and the second valve are arranged in a mirror image mode along a preset radian and are mutually abutted;
the first valve and the second valve are elastic valves.
3. The metering blood collecting device according to claim 1, wherein the first locking member is sleeved on the first connecting tube at a position close to the metering tube, and the second locking member is sleeved on the second connecting tube at a position close to the metering tube;
The first locking piece and the second locking piece are identical in structure.
4. A metering blood drawing device according to claim 3 wherein the first locking member comprises:
The center of the mounting piece is provided with a pipe hole along the thickness direction; a mounting hole is formed in the mounting piece in a penetrating manner along the length direction, and the mounting hole is formed in a penetrating manner with the pipe hole;
The adjusting piece is arranged in the mounting hole in a sliding mode, a yielding hole is formed in the position, corresponding to the pipe hole, of the adjusting piece, a clamping tenon is arranged on one side in the yielding hole, and the clamping tenon is used for changing the shapes of the first connecting pipe and the second connecting pipe.
5. The metering blood collecting device according to claim 4, wherein a first clamping groove and a second clamping groove are formed in one side of the inside of the mounting hole, and the first clamping groove and the second clamping groove are arranged along a direction perpendicular to the penetrating direction of the mounting hole;
One side on the regulating piece is provided with the tenon, the tenon is along perpendicular the direction setting that the mounting hole link up, the tenon with first draw-in groove with the adaptation of second draw-in groove, the tenon is used for limiting the regulating piece is in the position in the mounting.
6. The metering blood drawing device of claim 5, wherein the first and second clamping grooves are disposed at a predetermined distance from each other, the predetermined distance being greater than or equal to a diameter dimension of the tube aperture;
The shape of the section of the clamping tenon is isosceles triangle, and the vertex of the section of the clamping tenon is positioned at the center position corresponding to the height direction of the mounting hole.
7. The metering blood collecting device according to claim 4, wherein limiting plates are respectively arranged on two sides of the adjusting piece, and the shape of the limiting plates is matched with the section shape of the mounting piece;
an anti-slip layer is arranged on one side, away from the mounting piece, of the limiting plate;
The limiting plate is used for driving the adjusting piece to directionally slide in the mounting piece.
8. The metering blood sampling device of claim 1, wherein the negative pressure blood sample bottle is a transparent bottle body and the metering tube is a transparent metering tube;
The metering tube is provided with a marking part which is used for marking the volume of the blood sample in the metering tube.
9. The metering blood sampling device according to claim 1, wherein the blood sampling needle comprises a connecting cap, a connecting piece is arranged on the second connecting pipe, and the connecting cap is detachably and closely connected with the connecting piece;
One end of the first connecting pipe, which is far away from the metering tube, is connected with the negative pressure blood sample bottle in a plugging manner.
10. A sample collection device comprising a metering blood sampling apparatus according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322141677.4U CN220876768U (en) | 2023-08-08 | 2023-08-08 | Metering blood sampling device and sample collection instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322141677.4U CN220876768U (en) | 2023-08-08 | 2023-08-08 | Metering blood sampling device and sample collection instrument |
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| Publication Number | Publication Date |
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| CN220876768U true CN220876768U (en) | 2024-05-03 |
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| CN202322141677.4U Active CN220876768U (en) | 2023-08-08 | 2023-08-08 | Metering blood sampling device and sample collection instrument |
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| Country | Link |
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| CN (1) | CN220876768U (en) |
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