CN210095746U - Blood taking needle and blood taking tube with flow controlled through switch structure - Google Patents
Blood taking needle and blood taking tube with flow controlled through switch structure Download PDFInfo
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- CN210095746U CN210095746U CN201821665809.6U CN201821665809U CN210095746U CN 210095746 U CN210095746 U CN 210095746U CN 201821665809 U CN201821665809 U CN 201821665809U CN 210095746 U CN210095746 U CN 210095746U
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Abstract
The utility model belongs to the technical field of medical instrument, specifically a through switch structure controlled flow's blood sampling device. When nursing staff took blood at present, can only judge through experience fast whether the blood volume reaches the marking of ruling on the heparin tube, nursing staff need the quick disconnection be connected of heparin tube and blood taking needle, and the blood volume in this in-process heparin tube has changed. The utility model is provided with a jacket outside the blood sampling tube, which comprises a cover sleeve and a body sleeve and is divided into a left jacket and a right jacket, the outer wall of the front end of the half jacket is provided with scale marks, and the scale marks on the two half jackets are axisymmetric; the blood taking needle is provided with a switch structure. The utility model discloses a set up the switch structure, the control method of multiple form on the blood taking needle, can better control the volume of taking a blood sample, change the auxiliary device, the structure of operation, like the scale mark that sets up on the cover that presss from both sides, make the volume of taking a blood sample in the blood taking tube more accurate, establish the basis for the more accurate blood analysis result in later stage.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, specifically be a blood taking needle and heparin tube through on-off structure control flow.
Background
The vacuum blood collection tube technology is the international advanced blood collection technology at present. The vacuum blood collection tube is technically characterized in that:
(1) automatic metering without pumping back: because the blood sampling tube is artificially vacuumed, the blood sampling amount can be controlled by controlling the air pressure. Manual back-pumping measurement is not needed during operation;
(2) the sterility degree is high, and the inspection interference is small: in order to keep the vacuum in the tube, the tube opening cover of the vacuum blood collection tube has good tightness, high sterility degree, small blood pollution probability and relatively small interference on the test result;
(3) the blood composition is changed little by injecting blood into the tube once: the vacuum blood sampling method directly injects blood into the blood sampling tube, so that two processes of blood retention in the syringe needle cylinder and blood transfer from the needle cylinder to the blood sampling tube are omitted, repeated extrusion of blood is reduced, blood cells are less damaged, and the test result is more reliable.
At present, the blood collection tube has two types, namely a soft connection type bidirectional blood collection needle system (scalp vein bidirectional blood collection type) and a hard connection type bidirectional blood collection needle system (sleeve bidirectional blood collection type), wherein one end of the blood collection tube is a puncture needle, and the other end of the blood collection tube is a puncture needle. Because the vacuum blood sampling method conforms to biological safety measures, is simple, convenient, accurate and reliable to operate and is generally applied to clinic, the vacuum blood sampling technology is an advanced blood sampling technology and is popular with hospitals and patients. The disposable vacuum blood sampling device is adopted to replace a disposable injector for blood sampling, and has the advantages of simple operation, less pain of patients, high working efficiency, no limit on blood sampling amount, operator protection, environmental pollution reduction and the like, so the disposable vacuum blood sampling device is more and more widely applied clinically.
In order to protect whole blood and plasma for in vitro tests, an anticoagulant, a protective agent, and the like are generally added to a blood collection tube (i.e., a vacuum blood collection tube) to prevent blood from coagulating, changing, affecting blood analysis, or a coagulant is added to obtain serum. The blood collection amount has a significant influence on the concentration change of additives such as anticoagulant, protective agent, and coagulant, and if a blood collection tube having an anticoagulant, particularly a liquid anticoagulant, is used, the blood collection amount has a significant influence on the result of blood analysis: too low concentration of anticoagulant can result in insufficient anticoagulation of blood, and too high concentration of anticoagulant can affect increase of cell volume, form hypertonicity and affect detection results. At present, when a nursing person performs blood sampling operation, whether the blood sampling amount reaches a marked line on a blood sampling tube can be quickly judged only through experience, the nursing person needs to quickly disconnect the blood sampling tube from a blood sampling needle, the blood amount in the blood sampling tube is changed in the process, namely when the concave surface of blood in the blood sampling tube reaches the marked line and the blood sampling tube is disconnected, the actual blood amount exceeds the marked line, and the concentration in the blood sampling tube is changed; if the blood sampling tube is disconnected in advance, the actual blood sampling amount is lower than the marked line to different degrees, and the concentration in the blood sampling tube is changed.
Disclosure of Invention
The utility model aims at: the blood sampling device with the switch structure and the control function is developed, the flow speed or the flow of blood in a blood sampling needle or a blood sampling tube can be adjusted, and when the blood volume in the blood sampling tube approaches to a marking line, the blood volume can reach the marking line position of the blood sampling tube as accurately as possible by controlling the blood flow so that the concentration of additives and blood in the blood sampling tube meets the solution design requirement of the blood sampling tube.
The technical scheme adopted for solving the technical problems is as follows:
a blood taking needle and a blood collection tube controlling flow through a switch structure, comprising:
the blood taking needle comprises a puncture needle, a hose and a puncture needle;
the puncture needle is connected with the hose through a puncture needle head and is used for puncturing one end of the puncture needle of the blood taking needle into the body of a patient to take blood;
the puncture needle is connected with the hose through a puncture needle head and is used for puncturing one end of the puncture needle of the blood taking needle into the blood taking tube to receive blood;
the blood collection tube comprises a tube body and a tube cover, wherein the outer diameter of the tube cover is larger than that of the tube body, and the tube cover is buckled at the opening of the tube body;
the method is characterized in that:
the outer part of the blood collection tube is provided with a jacket which is wrapped on the outer part of the blood collection tube and used for fixing the blood collection tube;
the jacket comprises a cover sleeve and a body sleeve, the cover sleeve comprises two oppositely arranged buckling parts, the cover sleeve is wrapped outside a tube cover of the blood collection tube, the top of the cover sleeve is provided with an opening for the puncture needle of the blood collection tube to puncture, and the bottom of the cover sleeve is connected with the body sleeve;
the body cover wraps the body of the blood sampling tube, the upper part of the body cover is connected with the cover, the buckling part of the cover is fixedly connected with the body cover or integrally formed, a cavity is formed in the middle of the body cover and used for placing the blood sampling tube, and
the outer edge of the top of the cover part sleeve is in an inclined shape with high middle and low periphery and is used for forcing the top of the blood collection tube cover to be extruded and move downwards; the lower edge of the body sleeve is higher than the bottom of the tube body of the blood collection tube, so that the lower part of the tube body is exposed out of the clamping sleeve, and an operator can conveniently operate the blood collection tube through the lower part of the tube body;
the jacket is divided into a left jacket and a right jacket, the rear ends of the two half jackets are provided with movable connecting devices, the two half jackets are hinged together by the movable connecting devices, so that the jackets can be opened and closed, and
the front ends of the two half jackets are provided with longitudinal openings, namely, the blood sampling tube is placed in the jacket, the two half jackets are clamped, the blood sampling tube is fixed in the jacket by the jacket, and a gap is formed between the front ends of the two half jackets to form the longitudinal opening so as to observe the blood sampling amount and the scale in the blood sampling tube from the longitudinal opening;
the outer wall of the front end of the left half jacket and the outer wall of the front end of the right half jacket are provided with scale marks, and the scale marks on the two half jackets are in axial symmetry.
The buckling part of the cover part sleeve is provided with an adjusting part, and the adjusting part limits the buckling part to be adjusted in the vertical direction and is used for adjusting the height of the cover part sleeve so as to adapt to blood sampling tubes of different specifications.
The adjusting part of the buckling part comprises an inner sleeve and an outer sleeve, the inner sleeve is embedded in the outer sleeve, a spring is arranged between the inner sleeve and the outer sleeve, and the spring enables the inner sleeve to approach the outer sleeve in the vertical direction when the inner sleeve and the outer sleeve are supported by external force.
The body sleeve is made of transparent materials so as to observe the blood collection amount in the blood collection tube.
The inner wall of the body sleeve is provided with a longitudinal luminous body for illuminating the blood collection tube.
The inner wall of the body sleeve is provided with a convex point, a convex strip or a convex block-shaped anti-slip part made of silica gel or rubber.
The movable connecting device comprises a hinge or a crease, and a torsion spring and/or a spring plate are arranged on the hinge or the crease.
The puncture needle head and/or the hose and/or the puncture needle head are/is provided with a switch structure, and the switch structure comprises a switch part and a control part;
the switch part is arranged on the puncture needle head and/or the hose and/or the puncture needle head and is used for opening and closing the blood transfusion passage of the blood taking needle or controlling the blood flow speed and the blood flow of the blood transfusion passage;
the control part is arranged on the jacket and is used for controlling the on-off of the switch part or adjusting the opening degree of the switch part through the control part while a nursing person uses the blood sampling tube to collect blood;
the control part and the switch part are mechanically and/or electrically connected and/or connected through a pipeline by a control line camera, and the connection mode is used for transmitting the control signal or the control operation of the control part to the switch part so as to command or drive the switch part to perform the action associated with the control signal or the control operation.
The switch structure is a mechanical device, and the control part is arranged outside the cover part sleeve of the jacket;
the control part comprises a base and a handle, the base is fixed on the cover sleeve, one end of the handle is hinged to the bottom of the base, and the other end of the handle extends outwards;
the base is provided with a support arm, the support arm extends upwards, and the switch part of the switch structure is assembled at the top end of the support arm;
the support arm is of a hollow structure, a pull rod is arranged in the support arm, the bottom end of the pull rod is hinged with the handle, and the top end of the pull rod is connected with the switch part;
the switch portion includes the switch box, is equipped with switch fixed part, switch movable part in the switch box, switch fixed part and switch box fixed connection, and the switch movable part is assembled in the switch box movably, and relatively with the switch fixed part, and the switch movable part links to each other with the pull rod, is equipped with the pressure spring between the inner wall of switch movable part and switch box, and this pressure spring is used for urging switch movable part to close the switch fixed part.
The switch box is arranged outside the cover part sleeve of the jacket.
The switch structure is mechanical device, and switch portion and control part link formula structure as an organic whole, the switch box is established in the cover that presss from both sides the cover outside, is equipped with switch fixed part, switch movable part in the switch box, switch fixed part and switch box fixed connection, switch movable part activity ground, and assemble in the switch box relatively with the switch fixed part, the switch movable part extends, forms control part (being the handle) to the switch box is outward, is equipped with the pressure spring between the inner wall of switch movable part and switch box, and this pressure spring is used for urging switch movable part to close the switch fixed part.
The switch structure is electronic, pneumatic or hydraulic.
The switch structure is an electronic device, the switch part comprises a clamping body, the clamping body consists of two oppositely arranged plate-shaped bodies, one ends of the two plate-shaped bodies are hinged, the other ends of the two plate-shaped bodies are respectively provided with a micro motor and a tensioning piece, one end of the tensioning piece is fixed on one plate-shaped body, the other end of the tensioning piece penetrates through the other plate-shaped body, the micro motor is arranged on the plate-shaped body penetrated by the tensioning piece, and the tensioning piece is in transmission connection with the micro motor;
the control part is arranged on the jacket and is an electronic switch which is electrically connected with the micromotor and can control the micromotor to work.
The switch structure is integrated with the jacket and the blood taking needle. The puncture needle, the needle head and the cover sleeve of the jacket are of an integrated structure, the switch part of the switch structure is arranged on the puncture needle head, and the control part is arranged on the cover sleeve.
The utility model has the advantages that: the switch structure is arranged on the blood taking needle, so that the blood taking operation of the blood taking needle and the blood taking tube can be controlled, the blood taking amount is not regulated and controlled only by the vacuum negative pressure in the blood taking tube, or the blood taking amount is regulated and controlled by depending on the operation experience of blood taking nursing personnel, namely subjective factors such as visual judgment, manual operation and the like of the personnel. The utility model provides a switch structure, the control method of multiform to and auxiliary device, the structure that can better control the volume of taking a blood sample, change the operation, like the scale mark that sets up on the cover that presss from both sides, make the volume of taking a blood sample in the blood sampling pipe more accurate, establish the basis for the more accurate blood analysis result in later stage.
Drawings
The attached drawings are as follows:
fig. 1 is a schematic structural diagram of a jacket according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a blood collection needle and a blood collection tube assembled with a jacket according to a first embodiment of the present invention;
fig. 3 is a schematic structural view of an adjusting portion of a cover portion of a jacket covering a buckling portion according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a split switch structure according to a third embodiment of the present invention;
fig. 5 is a schematic structural diagram of an integrated switch structure according to a third embodiment of the present invention;
fig. 6 is a schematic structural diagram of a fourth embodiment of the present invention.
Wherein:
1 blood taking needle 11, puncture needle 12, puncture needle head 13, hose 14, puncture needle 15 and puncture needle head
2 body 22 tube cap of blood collection tube 21
3 Jacket
31 cover part sleeve 311 buckling part 312 adjusting part 313 inner sleeve 314 and spring 315 outer sleeve
32 half jacket 321, left jacket 322, right jacket 323, movable connection device 324 longitudinal opening 325 graduation line
33 body sleeve
4-switch structure
Plate-like body 416 for clamping switch movable part 414 of switch fixed part 414 of switch box 412 and switch fixed part 413 by compression spring 415 of switch part 411 and switch box 412
417 micromotor 418 tension member
42 control part 421 base 422 handle 423 support arm 424 pull rod 425 electronic switch
Detailed Description
[ example 1 ]
As shown in fig. 1, 2 and 3, the blood collection needle and blood collection tube of the present embodiment, which controls the flow rate by the switch structure, includes: the blood taking needle comprises a puncture needle, a hose and a puncture needle;
the puncture needle is connected with the hose through a puncture needle head and is used for puncturing one end of the puncture needle of the blood taking needle into the body of a patient to take blood;
the puncture needle is connected with the hose through a puncture needle head and is used for puncturing one end of the puncture needle of the blood taking needle into the blood taking tube to receive blood;
the blood collection tube comprises a tube body and a tube cover, wherein the outer diameter of the tube cover is larger than that of the tube body, and the tube cover is buckled at the opening of the tube body;
the method is characterized in that:
the outer part of the blood collection tube is provided with a jacket which is wrapped on the outer part of the blood collection tube and used for fixing the blood collection tube;
the jacket comprises a cover sleeve and a body sleeve, the cover sleeve comprises two oppositely arranged buckling parts, the cover sleeve is wrapped outside a tube cover of the blood collection tube, the top of the cover sleeve is provided with an opening for the puncture needle of the blood collection tube to puncture, and the bottom of the cover sleeve is connected with the body sleeve;
the body cover wraps the body of the blood sampling tube, the upper part of the body cover is connected with the cover, the buckling part of the cover is fixedly connected with the body cover or integrally formed, a cavity is formed in the middle of the body cover and used for placing the blood sampling tube, and
the outer edge of the top of the cover part sleeve is in an inclined shape with high middle and low periphery and is used for forcing the top of the blood collection tube cover to be extruded and move downwards; the lower edge of the body sleeve is higher than the bottom of the tube body of the blood collection tube, so that the lower part of the tube body is exposed out of the clamping sleeve, and an operator can conveniently operate the blood collection tube through the lower part of the tube body;
the jacket is divided into a left jacket and a right jacket, the rear ends of the two half jackets are provided with movable connecting devices, the two half jackets are hinged together by the movable connecting devices, so that the jackets can be opened and closed, and
the front ends of the two half jackets are provided with longitudinal openings, namely, the blood sampling tube is placed in the jacket, the two half jackets are clamped, the blood sampling tube is fixed in the jacket by the jacket, and a gap is formed between the front ends of the two half jackets to form the longitudinal opening so as to observe the blood sampling amount and the scale in the blood sampling tube from the longitudinal opening;
the outer wall of the front end of the left half jacket and the outer wall of the front end of the right half jacket are provided with scale marks, and the scale marks on the two half jackets are in axial symmetry.
During the use, puncture the blood taking needle earlier and stay on the patient, place the blood sampling tube in the jacket again, handheld jacket (and the blood sampling tube in it), prick the plug needle of blood taking needle in the blood sampling tube and take a blood sample.
The cover part of the jacket is flush with the bottom of the inner cavity of the jacket and can push against the tube cover of the blood collection tube; the top of the cover sleeve is internally inclined, and when the clamping sleeve is buckled, the inclined top presses and fixes the tube cover of the blood collection tube, so that the blood collection tube cannot be vertically displaced; after the clamping sleeve is buckled, the body sleeve part limits the tube body part of the blood collection tube inside the body sleeve part. The jacket consists of two half jackets, and the half jackets are provided with scale marks which are horizontally aligned; the blood sampling tube is also provided with a marking line for indicating the blood sampling amount, and after the blood sampling tube is fixed in the jacket, the marking line displays a certain position of the scale mark on the jacket or is aligned with a certain scale of the scale mark, but the use of the scale mark is not influenced no matter whether the marking line is aligned with the scale mark or not. Compare in the display mode that only has the marking, the change of blood capacity in the blood sampling pipe can be indicateed with the combination of scale mark, and the personnel of taking a blood sample can form the visual vision that the liquid level of blood volume of taking a blood approaches the marking to in accuracy judgement blood volume, punctual stop the blood sampling operation.
Further, the buckling part of the cover part sleeve is provided with an adjusting part, and the adjusting part limits the buckling part to be adjusted in the vertical direction and is used for adjusting the height of the cover part sleeve so as to adapt to blood sampling tubes of different specifications. Because the blood sampling tubes are manufactured by manufacturers, the specifications of the blood sampling tubes are different, and the tube diameters and the lengths of the blood sampling tubes and the outer diameters and the heights of the tube covers of the blood sampling tubes are different, so that the clamping sleeve, particularly the cover sleeve part, can adapt to the blood sampling tubes and the tube covers with different sizes. The adjusting part can realize the adjustment of the cover part in the vertical direction, and the clamping sleeve has the opening and closing degree adjusting function by combining with the clamping sleeve, so that the clamping sleeve can adapt to blood sampling tubes with different sizes.
Furthermore, the adjusting part of the buckling part comprises an inner sleeve and an outer sleeve, the inner sleeve is embedded in the outer sleeve, a spring is arranged between the inner sleeve and the outer sleeve, and the spring enables the inner sleeve to approach the outer sleeve in the vertical direction when the inner sleeve and the outer sleeve are supported by external force.
Further, the body sleeve is made of transparent materials so as to observe the blood collection amount in the blood collection tube.
Furthermore, the inner wall of the body sleeve is provided with a longitudinal luminous body for illuminating the blood sampling tube.
Furthermore, be equipped with the antiskid portion that is bump, sand grip or lug form by silica gel or rubber is made on the inner wall of body portion cover, this antiskid portion can restrict the heparin tube and take place to rotate, displacement in pressing from both sides the cover to avoid heparin tube marking and scale mark to take place the dislocation and influence observation, the judgement of the volume of taking a blood sample.
Furthermore, the movable connecting device comprises a hinge or a crease, a torsion spring and/or an elastic sheet are arranged on the hinge or the crease, and the torsion spring and the elastic sheet can enable the two halves of the jacket to be automatically opened when no external force is applied, so that the blood sampling tube can be conveniently taken out and placed.
[ example 2 ]
As shown in fig. 4, 5 and 6, on the basis of the above embodiments, the puncture needle head and/or the hose and/or the puncture needle head of the present embodiment is provided with a switch structure, and the switch structure includes a switch portion and a control portion;
the switch part is arranged on the puncture needle head and/or the hose and/or the puncture needle head and is used for opening and closing the blood transfusion passage of the blood taking needle or controlling the blood flow speed and the blood flow of the blood transfusion passage;
the control part is arranged on the jacket and is used for controlling the on-off of the switch part or adjusting the opening degree of the switch part through the control part while a nursing person uses the blood sampling tube to collect blood;
the control part and the switch part are mechanically and/or electrically connected and/or connected through a pipeline by a control line camera, and the connection mode is used for transmitting the control signal or the control operation of the control part to the switch part so as to command or drive the switch part to perform the action associated with the control signal or the control operation.
The switch device is arranged on the blood taking needle, the scale on the jacket is matched, the blood flow or the flow velocity in the blood taking channel of the blood taking tube can be controlled, when the blood taking amount in the blood taking tube is close to the marking line of the blood taking tube, the flow and the flow velocity of the blood in the blood taking needle can be reduced and reduced through the switch device, and the concave liquid level of the blood in the blood taking tube slowly rises to the marking line so as to achieve the purpose of accurately collecting the blood. Above-mentioned switching device can assemble on the blood taking needle, also can assemble on the heparin tube, but switching device's control part, the control part will set up on pressing from both sides the cover promptly, can be convenient for when handheld cover (heparin tube) that presss from both sides, through one-hand control switching device's control part, can observe, control switching device simultaneously, realize accurate operation, make the unlimited standard blood volume of drawing a blood that is close to the heparin tube of the volume of drawing a blood.
The above-mentioned switch device can be realized in various forms, and the following embodiments only illustrate the structure and implementation manner of the switch device, and do not limit the switch device described in the present embodiment, and do not lead to the reduction of the protection scope thereof.
[ example 3 ]
As shown in fig. 4, on the basis of the above embodiment, the switch structure of the present embodiment is a mechanical device, and the control part is arranged outside the cover part of the jacket;
the control part comprises a base and a handle, the base is fixed on the cover sleeve, one end of the handle is hinged to the bottom of the base, and the other end of the handle extends outwards;
the base is provided with a support arm, the support arm extends upwards, and the switch part of the switch structure is assembled at the top end of the support arm;
the support arm is of a hollow structure, a pull rod is arranged in the support arm, the bottom end of the pull rod is hinged with the handle, and the top end of the pull rod is connected with the switch part;
the switch portion includes the switch box, is equipped with switch fixed part, switch movable part in the switch box, switch fixed part and switch box fixed connection, and the switch movable part is assembled in the switch box movably, and relatively with the switch fixed part, and the switch movable part links to each other with the pull rod, is equipped with the pressure spring between the inner wall of switch movable part and switch box, and this pressure spring is used for urging switch movable part to close the switch fixed part.
When the blood taking needle is used, the hose of the blood taking needle is firstly placed between the switch fixing part and the switch movable part in the switch box, and the switch movable part is close to the switch fixing part under the action of the pressure spring, so that the hose is kneaded and cut off. When blood is collected, the blood collection tube is connected with the puncture needle, the handle is pulled downwards, the handle drives the connecting rod and the connecting rod to drive the switch movable part to leave the switch fixing part, the hose is restored to the original state and is communicated with the channel, and blood is injected into the blood collection tube through the blood collection needle to finish blood collection. When the blood sampling amount approaches to the marking line of the blood sampling tube, the handle is released, the movable part of the switch is attached to the fixed part of the switch under the action of the pressure spring, and the hose is closed; and a micro-motion control handle is adopted, so that the blood taking needle enters the blood taking tube with a trace amount of blood, and the blood taking amount is accurately controlled.
The switch box is arranged outside the cover part sleeve of the jacket.
As shown in fig. 5, it is another solution of this embodiment, the switch structure is also a mechanical device, the switch portion and the control portion are connected to form an integrated structure, the switch box is disposed outside the cover portion of the jacket, a switch fixing portion and a switch moving portion are disposed in the switch box, the switch fixing portion is fixedly connected to the switch box, the switch moving portion is movably and relatively assembled in the switch box with respect to the switch fixing portion, the switch moving portion extends outward from the switch box to form the control portion (i.e., a handle), and a compression spring is disposed between the switch moving portion and the inner wall of the switch box and used for urging the switch moving portion to approach the switch fixing portion.
Different from the scheme, the switch part and the control part are connected into a whole, and the hose of the blood taking needle also passes through the switch fixed part and the switch movable part in the switch box and controls the switch device to work through the handle. The scheme has the advantages of simple structure, small occupied space and convenient manufacture.
In both aspects of the present embodiment, the mechanical transmission ratio between the control unit and the switch unit is variable, that is, when the blood sampling amount approaches the marker, the caregiver can control the small inching of the switch unit to control the blood sampling flow rate to be minute by the large operation of the control unit.
[ example 4 ]
On the basis of the above embodiments, the switch structure of the present embodiment is electronic, pneumatic, or hydraulic.
As shown in fig. 6, the switch structure is an electronic device, the switch portion includes a clamping body, the clamping body is composed of two oppositely arranged plate-shaped bodies, one end of each of the two plate-shaped bodies is hinged, the other end of each of the two plate-shaped bodies is provided with a micro-motor and a tensioning member, one end of each of the tensioning members is fixed on one of the plate-shaped bodies, the other end of each of the tensioning members passes through the other plate-shaped body, the micro-motor is arranged on the plate-shaped body through which the tensioning member passes, and the;
the control part is arranged on the jacket and is an electronic switch which is electrically connected with the micromotor and can control the micromotor to work.
[ example 5 ]
On the basis of the above embodiment, the switch structure, the jacket and the blood taking needle are integrated into an integrated structure in the embodiment, that is, the puncture needle head, the cover sleeve and the switch structure are connected into a whole, so that the transmission structure in the switch structure is reduced or eliminated, and the operation and the control are more direct; in addition, the scheme that links as an organic whole has greatly reduced the work of subassembly each other between the part, and nursing staff's blood sampling operation is more swift, especially in clinical application in batches, more can improve work efficiency by a wide margin.
[ example 6 ]
Selecting 10 volunteer examinees, taking venous blood, subpackaging each examinee venous blood according to 1.0ml, 1.2ml, 1.4ml, 1.6ml, 1.8ml and 2.0ml, putting the subpackaged venous blood into an instrument for analysis and detection, comparing the result with the result of 2.0ml, and analyzing the influence of the sample amount on the detection result. As a result, it was found that: the detection result has data difference due to different blood collection amounts, wherein the blood collection amount of 1.8ml with reference value exists, and partial parameters have fluctuation of-25% to + 20.2%, which shows that the blood collection amount has great influence on the blood analysis detection result.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. A blood sampling device with flow controlled by a switch structure comprises a blood sampling needle and a blood sampling tube, wherein:
the blood taking needle comprises a puncture needle, a hose and a puncture needle;
the puncture needle is connected with the hose through a puncture needle head and is used for puncturing one end of the puncture needle of the blood taking needle into the body of a patient to take blood;
the puncture needle is connected with the hose through a puncture needle head and is used for puncturing one end of the puncture needle of the blood taking needle into the blood taking tube to receive blood;
the blood collection tube comprises a tube body and a tube cover, wherein the outer diameter of the tube cover is larger than that of the tube body, and the tube cover is buckled at the opening of the tube body;
the method is characterized in that:
the outer part of the blood collection tube is provided with a jacket which is wrapped on the outer part of the blood collection tube and used for fixing the blood collection tube;
the jacket comprises a cover sleeve and a body sleeve, the cover sleeve comprises two oppositely arranged buckling parts, the cover sleeve is wrapped outside a tube cover of the blood collection tube, the top of the cover sleeve is provided with an opening for the puncture needle of the blood collection tube to puncture, and the bottom of the cover sleeve is connected with the body sleeve;
the body cover wraps the body of the blood sampling tube, the upper part of the body cover is connected with the cover, the buckling part of the cover is fixedly connected with the body cover or integrally formed, a cavity is formed in the middle of the body cover and used for placing the blood sampling tube, and
the outer edge of the top of the cover part sleeve is in an inclined shape with high middle and low periphery and is used for forcing the top of the blood collection tube cover to be extruded and move downwards; the lower edge of the body sleeve is higher than the bottom of the tube body of the blood collection tube, so that the lower part of the tube body is exposed out of the clamping sleeve, and an operator can conveniently operate the blood collection tube through the lower part of the tube body;
the jacket is divided into a left jacket and a right jacket, the rear ends of the two half jackets are provided with movable connecting devices, the two half jackets are hinged together by the movable connecting devices, so that the jackets can be opened and closed, and
the front ends of the two half jackets are provided with longitudinal openings, namely, the blood sampling tube is placed in the jacket, the two half jackets are clamped, the blood sampling tube is fixed in the jacket by the jacket, and a gap is formed between the front ends of the two half jackets to form the longitudinal opening so as to observe the blood sampling amount and the scale in the blood sampling tube from the longitudinal opening;
the outer wall of the front end of the left half jacket and the outer wall of the front end of the right half jacket are provided with scale marks, and the scale marks on the two half jackets are in axial symmetry.
2. The lancing device according to claim 1, wherein the flow rate is controlled by a switch structure comprising:
the buckling part of the cover part sleeve is provided with an adjusting part, and the adjusting part limits the buckling part to be adjusted in the vertical direction and is used for adjusting the height of the cover part sleeve so as to adapt to blood sampling tubes of different specifications.
3. A lancing device according to any one of claims 1 or 2 for controlling flow through a switch arrangement, wherein: the adjusting part of the buckling part comprises an inner sleeve and an outer sleeve, the inner sleeve is embedded in the outer sleeve, a spring is arranged between the inner sleeve and the outer sleeve, and the spring enables the inner sleeve to approach the outer sleeve in the vertical direction when the inner sleeve and the outer sleeve are supported by external force.
4. A lancing device according to claim 3 for controlling flow through a switch structure, wherein:
the body sleeve is made of transparent material so as to observe the blood collection amount in the blood collection tube;
the inner wall of the body sleeve is provided with a longitudinal luminous body for illuminating the blood collection tube;
the inner wall of the body sleeve is provided with a convex point, a convex strip or a convex block-shaped anti-slip part made of silica gel or rubber.
5. A lancing device according to any one of claims 1 or 4 for controlling flow through a switch arrangement, wherein: the movable connecting device comprises a hinge or a crease, and a torsion spring and/or a spring plate are arranged on the hinge or the crease.
6. The lancing device according to claim 1, wherein the flow rate is controlled by a switch structure comprising:
the puncture needle head and/or the hose and/or the puncture needle head are/is provided with a switch structure, and the switch structure comprises a switch part and a control part;
the switch part is arranged on the puncture needle head and/or the hose and/or the puncture needle head and is used for opening and closing the blood transfusion passage of the blood taking needle or controlling the blood flow speed and the blood flow of the blood transfusion passage;
the control part is arranged on the jacket and is used for controlling the on-off of the switch part or adjusting the opening degree of the switch part through the control part while a nursing person uses the blood sampling tube to collect blood;
the control part and the switch part are mechanically and/or electrically connected and/or connected through a pipeline by a control line camera, and the connection mode is used for transmitting the control signal or the control operation of the control part to the switch part so as to command or drive the switch part to perform the action associated with the control signal or the control operation.
7. The lancing device according to claim 6, wherein the flow rate is controlled by a switch structure comprising:
the switch structure is a mechanical device, and the control part is arranged outside the cover part sleeve of the jacket;
the control part comprises a base and a handle, the base is fixed on the cover sleeve, one end of the handle is hinged to the bottom of the base, and the other end of the handle extends outwards;
the base is provided with a support arm, the support arm extends upwards, and the switch part of the switch structure is assembled at the top end of the support arm;
the support arm is of a hollow structure, a pull rod is arranged in the support arm, the bottom end of the pull rod is hinged with the handle, and the top end of the pull rod is connected with the switch part; the switch portion includes the switch box, is equipped with switch fixed part, switch movable part in the switch box, switch fixed part and switch box fixed connection, and the switch movable part is assembled in the switch box movably, and relatively with the switch fixed part, and the switch movable part links to each other with the pull rod, is equipped with the pressure spring between the inner wall of switch movable part and switch box, and this pressure spring is used for urging switch movable part to close the switch fixed part.
8. The lancing device according to claim 7, wherein the flow rate is controlled by a switch structure comprising:
the switch part and the control part are connected into an integral structure, the switch box is arranged outside the cover part sleeve of the jacket, and the switch movable part extends out of the switch box to form the control part.
9. The lancing device according to claim 6, wherein the flow rate is controlled by a switch structure comprising:
the switch structure is an electronic device, the switch part comprises a clamping body, the clamping body consists of two oppositely arranged plate-shaped bodies, one ends of the two plate-shaped bodies are hinged, the other ends of the two plate-shaped bodies are respectively provided with a micro motor and a tensioning piece, one end of the tensioning piece is fixed on one plate-shaped body, the other end of the tensioning piece penetrates through the other plate-shaped body, the micro motor is arranged on the plate-shaped body penetrated by the tensioning piece, and the tensioning piece is in transmission connection with the micro motor;
the control part is arranged on the jacket and is an electronic switch which is electrically connected with the micromotor and can control the micromotor to work.
10. A lancing device according to any one of claims 6, 7, 8, 9 for controlling flow through a switch arrangement, wherein:
the switch structure, the jacket and the blood taking needle are of an integrated structure, the switch part of the switch structure is arranged on the puncture needle head, and the control part is arranged on the cover sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821665809.6U CN210095746U (en) | 2018-09-26 | 2018-09-26 | Blood taking needle and blood taking tube with flow controlled through switch structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821665809.6U CN210095746U (en) | 2018-09-26 | 2018-09-26 | Blood taking needle and blood taking tube with flow controlled through switch structure |
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| CN210095746U true CN210095746U (en) | 2020-02-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116369916A (en) * | 2023-06-01 | 2023-07-04 | 南昌大学第一附属医院 | Controllable blood sampling system and application method thereof |
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2018
- 2018-09-26 CN CN201821665809.6U patent/CN210095746U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116369916A (en) * | 2023-06-01 | 2023-07-04 | 南昌大学第一附属医院 | Controllable blood sampling system and application method thereof |
| CN116369916B (en) * | 2023-06-01 | 2023-08-08 | 南昌大学第一附属医院 | Controllable blood sampling system |
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