CN110384509B

CN110384509B - Multifunctional device for venous blood sampling

Info

Publication number: CN110384509B
Application number: CN201910689988.XA
Authority: CN
Inventors: 张兵钱; 王广; 王善孚; 王善祥
Original assignee: Chongqing Medical and Pharmaceutical College
Current assignee: Chongqing Medical and Pharmaceutical College
Priority date: 2019-07-29
Filing date: 2019-07-29
Publication date: 2022-02-11
Anticipated expiration: 2039-07-29
Also published as: CN110384509A

Abstract

The invention discloses a multifunctional venous blood sampling device in the field of blood sampling devices, which comprises an arm bracket and a blood sampling tube bracket, wherein the arm bracket and the blood sampling tube bracket are vertically distributed and detachably connected; the blood collection tube bracket comprises a blood collection tube rack and a base, the blood collection tube rack is transversely connected to the base in a sliding manner, the base is provided with a transmission mechanism for driving the blood collection tube rack to transversely translate on the base and a jacking mechanism for driving the blood collection tube to vertically translate on the blood collection tube rack, the arm bracket comprises a supporting plate, a holding air bag is connected to the supporting plate, and the holding air bag, the transmission mechanism and the jacking mechanism are sequentially connected; the supporting plate is also connected with a pulse pressing belt. The invention can solve the problem that the efficiency is influenced by the weak correlation between tools which are operated dispersedly in the existing blood drawing operation process.

Description

Multifunctional device for venous blood sampling

Technical Field

The invention relates to the field of blood drawing devices, in particular to a multifunctional venous blood drawing device.

Background

The blood drawing test is one of the most common and effective test methods in the medical diagnosis and treatment process, and the health condition of a human body is accurately judged by collecting blood samples and detecting and analyzing various indexes. In the conventional blood sampling process of drawing blood, the patient exposes one arm to the elbow, with pressing the arteries and veins area in the elbow side ligature in order to slow down the antecubital vein distal end blood backward flow, then by the person of drawing blood make the protruding needle of being convenient for of vein tympanites many times of clenching, puncture the vein with special syringe, medical personnel get the vacuum blood collection tube and are connected with the syringe needle, the blood suction in the vein is to the blood collection tube to the intraductal negative pressure of vacuum blood collection tube. The blood sampling mode has some disadvantages, such as that the used tourniquet, the injector, the blood sampling tube and the like are independently placed, and need to be taken from different places when in use, the respective operations are dispersed and independent, no good logical association is formed, and the efficiency is influenced; the heparin tube is deposited and is adopted conventional test-tube carrier, and the heparin tube is placed comparatively in disorder on it, and does not possess effectual shockproof anti-drop structure, and the heparin tube also exposes in the environment, has certain pollution risk.

Disclosure of Invention

The invention aims to provide a multifunctional venous blood sampling device to solve the problem that the efficiency is influenced by weak correlation between tools which are operated dispersedly in the conventional blood sampling operation process.

In order to achieve the purpose, the basic technical scheme of the invention is as follows: a multifunctional venous blood sampling device comprises an arm bracket and a blood sampling tube bracket, wherein the arm bracket and the blood sampling tube bracket are vertically distributed and detachably connected; the blood collection tube bracket comprises a blood collection tube rack and a base, the blood collection tube rack is transversely connected to the base in a sliding manner, the base is provided with a transmission mechanism for driving the blood collection tube rack to transversely translate on the base and a jacking mechanism for driving the blood collection tube to vertically translate on the blood collection tube rack, the arm bracket comprises a supporting plate, a holding air bag is connected to the supporting plate, and the holding air bag, the transmission mechanism and the jacking mechanism are sequentially connected; the supporting plate is also connected with a pulse pressing belt.

The principle and the advantages of the scheme are as follows: during the in-service use, the arm bracket is used for placing the arm and is convenient for draw blood, and the region is placed to the simple directly perceived definite arm, and the heparin tube bracket is used for placing the heparin tube, and both can dismantle the connection and be convenient for transport, use, and the perpendicular distribution is convenient for place and draw blood operation, and can form the right angle region and be exclusively used in the blood of drawing. The blood sampling pipe support is used for the ration to place the heparin tube, and the base is as supporting and location structure, and sliding connection is convenient for the relative base of blood sampling pipe support to remove so that confirm different heparin tubes according to the different blood samples of drawing blood, and the change of the blood sampling pipe support of being convenient for. The transmission mechanism and the jacking mechanism can determine the corresponding blood sampling tube when carrying out blood drawing operation on different people and push the blood sampling tube out to be distinguished from other blood sampling tubes, and can automatically match the vacant blood sampling tubes according to the use sequence. The layer board is used for placing the arm, and the pressure arteries and veins area is used for ligature arm, holds the gasbag and is used for assisting before drawing blood by the person who draws blood and makes the elbow vein tympanites be convenient for discern the needle prick. The air bag, the transmission mechanism and the jacking mechanism which are connected in sequence can utilize the extrusion of the air bag when a fist is held, so that the gas in the air bag is discharged in sequence to serve as the power of the transmission mechanism and the jacking mechanism, and the power of the fist is fully utilized. The device of drawing blood of this scheme has integrateed a plurality of operating procedure of the in-process of drawing blood like this, and make the prominent power of elbow vein of make full use of fist, can enough make the vein show the medical personnel of being convenient for and prick the needle operation, can drive the blood sampling pipe support action by oneself again and provide vacant blood sampling tube, the condition of having avoided the blood sampling tube to take the mistake takes place, and from holding the gasbag to the transmission, the whole process of jacking is the logical order unanimous with the flow of drawing blood, operation not relapse in the middle of, and then the use that forms each instrument goes on according to logical order in proper order, there are not more influence steps in the middle of, and possess certain automation, it is more convenient in the management of blood sampling tube, make the efficiency of drawing blood improve by a wide margin.

Furthermore, the one end of layer board is connected and is pressed the arteries and veins area, and other end integrated into one piece has the cage, grips the gasbag and connects in the cage, grips the gasbag and is connected with intake pipe and blast pipe, is equipped with the check valve of admitting air in the intake pipe, is equipped with the check valve of exhausting on the blast pipe, and the blast pipe communicates with drive mechanism. The position of pressing the arteries and veins area and cage accords with the locating position of arm when drawing blood as preferring like this, and the cage keeps apart the protection to holding the gasbag, also can avoid being drawn blood person's hand and cause the influence to medical personnel's operation when using, realizes holding the gaseous one-way flow of gasbag through intake pipe, air inlet check valve, blast pipe, exhaust check valve, and then guarantees the effective gas power drive to drive mechanism and climbing mechanism.

Further, the holding air bag is in an ellipsoid shape, the air inlet pipe and the air outlet pipe are rigid pipes, the air inlet pipe and the air outlet pipe are respectively positioned at two ends of a long shaft of the holding air bag, and the air inlet pipe and the air outlet pipe are respectively arranged on the left side wall and the right side wall of the isolation cover in a penetrating mode. The air inlet pipe and the air outlet pipe are preferably arranged in the way, can be simultaneously used as an air channel and a connecting and supporting structure for holding the air bag, and are more convenient to hold due to the ellipsoidal shape.

Further, the base is rectangular block-shaped, a groove with an opening at the top and one side end is formed in the base, a limiting convex rib is arranged on the side wall of the groove, the blood sampling pipe support is supported in the groove through the limiting convex rib, and the jacking mechanism is located below the limiting convex rib. The open-top of recess like this is convenient for taking of heparin tube as preferring, and the side opening is convenient for the slip loading and unloading of heparin tube support, and spacing fin is used for dividing recess inner space into upper and lower two parts, and climbing mechanism's the installation of being convenient for is used, and overall structure is compact, and occupation space rule is just reasonable.

Further, the blood sampling pipe support is rectangular block-shaped, sets up a plurality of upper end open-ended slots that set up side by side on the blood sampling pipe support, and the via hole that runs through the blood sampling pipe support is seted up to the bottom of slot, and the length direction evenly distributed of a plurality of slots along the blood sampling pipe support. A plurality of heparin tubes can be deposited as the preferable heparin tube rack of such structure, can realize the quantitative management to the heparin tube, and every heparin tube homoenergetic is by the climbing mechanism jack-up that passes from the via hole.

Further, climbing mechanism is including fixing the gas box in the recess bottom, and the top of gas box is connected with the column gasbag, and gas box top is equipped with the gas pocket with the inside intercommunication of column gasbag, and the cross sectional dimension of column gasbag is less than the size of via hole, and the outside of column gasbag is equipped with the guide cylinder of fixing on the gas box, and the side intercommunication of gas box has communicating pipe, communicating pipe and drive mechanism intercommunication, and the side of gas box still is connected with the disappointing pipe, is equipped with the disappointing valve on the disappointing pipe. Make the blood sampling pipe support remove the back gas that targets in place from communicating pipe entering gas box as preferred drive mechanism, the gas box holds the chamber as gas and passes through limited space guide gas entering column gasbag, wear out the blood sampling pipe ejecting upwards under the guide of guide cylinder from the via hole after the column gasbag is aerifyd, the blood sampling pipe pushes down the column gasbag after the blood sampling is accomplished, the gas in the column gasbag is discharged through the pipe that loses heart, can realize jacking mechanism's air admission, action, exhaust control like this.

Further, the transmission mechanism comprises a transmission box fixed below the limiting convex ribs, the inner space of the transmission box is divided into an air inlet chamber and an air outlet chamber through a limiting block fixedly connected, the air outlet pipe is communicated with the air inlet chamber, the air inlet chamber is also communicated with a pressure relief pipe, and the pressure relief pipe is provided with a pressure relief valve; be equipped with the slider in the air discharge chamber, the top of slider is equipped with the driving piece that the drive blood sampling pipe support removed, and the air discharge chamber just equals the sum of the length of slider and two adjacent slot intervals to the distance between the lateral wall of air inlet chamber and the stopper, communicates with the air discharge chamber, and communicates with the distance between the communicating point on the air discharge chamber and the stopper and equals the interval of two adjacent slots. As preferred transmission box as transmission space, from holding the gasbag combustion gas entering air inlet chamber, air pressure change of air inlet chamber converts the displacement into through the slider, and then the slider drives blood sampling pipe support through the driving piece and removes a tub position top lift mechanism that makes the blood sampling pipe of vacant removes, and the removal distance of stopper restriction slider is in order to guarantee the one-way inflow communicating pipe of drive in-process gas, and the relief valve is used for adjusting air inlet chamber atmospheric pressure and makes the slider can reset after accomplishing once drawing blood.

Furthermore, the top of the exhaust chamber is provided with an opening, the driving part is a magnet fixed at the top of the sliding block, and the bottom of the blood sampling pipe frame is embedded with a ferromagnetic stainless steel bar; the part of the bottom of the blood sampling pipe support corresponding to the limiting convex rib is provided with a ratchet bar, the upper end of the limiting convex rib is also provided with the ratchet bar, and the ratchet inclination direction of the ratchet bar on the limiting convex rib faces the side end opening of the groove. The adsorption effect through magnet and ferromagnetism stainless steel strip as the preferred can be effectual removes the removal of drive blood sampling pipe support through the slider, and the ratchet makes the removal of blood sampling pipe support be unidirectional movement, the action of resetting of the slider of being convenient for like this, the inclination of ratchet can be adjusted according to actual need, in order to reach and to promote the removal of blood sampling pipe support through the slider and be accurate, and such structure can make the heparin tube have certain vibrations because of the reason of ratchet at the in-process that the blood sampling pipe support removed, can carry out slight oscillation to the heparin tube of accomplishing the blood sampling, avoid gathering blood to coagulate to a certain extent.

Furthermore, an interlayer cavity is arranged in the side wall of the isolation cover, an exhaust port communicated with the interlayer cavity is arranged on the inner wall of the isolation cover, the exhaust port faces towards the holding air bag, and the pressure relief pipe and the air release pipe are communicated with the interlayer cavity. Preferably, after the blood drawing is finished, the pressure relief pipe and the air release pipe can guide air to enter the interlayer cavity, so that the air blowing cleaning can be carried out on the space inside the isolation cover and the holding air bag, the holding air bag can be cleaned to a certain degree, and sweat smell accumulated in the isolation cover can be avoided.

Furthermore, the surface of the supporting plate is bonded with a cloth pad, the end part of the cloth pad far away from the isolation cover is sewn with a cloth extension pad, the extension pad is provided with a through hole, and the pulse pressing belt is arranged in the through hole in a penetrating way. The heat preservation effect of the supporting plate can be increased as an optimal cloth pad, so that the arm can be placed on the supporting plate more comfortably, the blood drawing feeling can be improved, the extending pad can be used for carrying out isolation protection on the rear side of the arm, the tourniquet connected to the extending pad can be conveniently bound when in use, is not easy to fall off and lose, and is more convenient to store.

Drawings

FIG. 1 is a plan view of an unloaded blood collection tube in example 1 of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a sectional view of the blood collection tube holder when no blood collection tube is loaded in embodiment 2 of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the blood sampling device comprises a supporting plate 1, an isolation cover 2, an air inlet one-way valve 3, an air inlet pipe 4, a holding air bag 5, an exhaust one-way valve 6, an exhaust pipe 7, an air release pipe 8, a pressure release pipe 9, a pressure release valve 10, an air release valve 11, a limiting convex rib 12, a base 13, a through hole 14, a slot 15, a blood sampling pipe frame 16, a ratchet bar 17, a pulse pressing belt 18, an extension pad 19, a transmission box 20, a limiting block 21, a sliding block 22, a magnet 23, a communicating pipe 24, an air box 25, a guide cylinder 26, a columnar air bag 27, a power supply 28, a switch 29 and a switch knife 30.

Example 1, substantially as shown in figures 1 and 2: the utility model provides a vein blood sampling multi-functional device, includes arm bracket and blood sampling pipe bracket, arm bracket and blood sampling pipe bracket vertical distribution just can dismantle the connection. The blood sampling tube bracket comprises a blood sampling tube rack 16 and a base 13, the blood sampling tube rack 16 is transversely connected to the base 13 in a sliding mode, and the base 13 is provided with a transmission mechanism for driving the blood sampling tube rack 16 to transversely translate on the base 13 and a jacking mechanism for driving the blood sampling tube to vertically translate on the blood sampling tube rack 16. The blood sampling pipe support 16 is rectangular block-shaped, eight slots 15 with an upper end opening are arranged on the blood sampling pipe support 16 side by side, via holes 14 penetrating the blood sampling pipe support 16 are arranged at the bottom of the slots 15, and the eight slots 15 are evenly distributed along the length direction of the blood sampling pipe support 16. The base 13 is rectangular block-shaped, a groove with a top end and a right side end opened is formed in the base 13, a limiting convex rib 12 is arranged on the side wall of the groove, the blood sampling pipe support 16 is supported in the groove through the limiting convex rib 12, the part, corresponding to the limiting convex rib 12, of the bottom of the blood sampling pipe support 16 is provided with a ratchet bar 17, the upper end of the limiting convex rib 12 is also provided with the ratchet bar 17, and the ratchet inclination direction of the ratchet bar 17 on the limiting convex rib 12 faces the side opening of the groove.

Climbing mechanism is located the below of spacing fin 12, climbing mechanism is including fixing the gas box 25 in the recess bottom, the top of gas box 25 is connected with column gasbag 27, the gas box 25 top is equipped with the gas pocket with the inside intercommunication of column gasbag 27, the cross sectional dimension of column gasbag 27 is less than the size of via hole 14, the outside of column gasbag 27 is equipped with the guide cylinder 26 of fixing on gas box 25, the side intercommunication of gas box 25 has communicating pipe 24, communicating pipe 24 and drive mechanism intercommunication, the side of gas box 25 still is connected with run-flat pipe 8, be equipped with release valve 11 on the run-flat pipe 8.

The arm bracket comprises a supporting plate 1, a holding air bag 5 is connected to the supporting plate 1, and the holding air bag 5, a transmission mechanism and a jacking mechanism are sequentially connected; the supporting plate 1 is also connected with a tourniquet belt 18. The tourniquet belt 18 is connected to the one end of layer board 1, and other end integrated into one piece has cage 2, grips gasbag 5 and connects in cage 2, grips gasbag 5 and is connected with intake pipe 4 and blast pipe 7, is equipped with the check valve 3 that admits air in the intake pipe 4, is equipped with exhaust check valve 6 on the blast pipe 7, and blast pipe 7 and drive mechanism intercommunication. The holding air bag 5 is in an ellipsoid shape, the air inlet pipe 4 and the air outlet pipe 7 are rigid pipes, the air inlet pipe 4 and the air outlet pipe 7 are respectively positioned at two ends of a long shaft of the holding air bag 5, and the air inlet pipe 4 and the air outlet pipe 7 are respectively arranged on the left side wall and the right side wall of the isolation cover 2 in a penetrating mode.

The transmission mechanism comprises a transmission box 20 fixed below the limiting convex rib 12, the internal space of the transmission box 20 is divided into an air inlet chamber and an air outlet chamber by a limiting block 21 fixedly connected, the exhaust pipe 7 is communicated with the air inlet chamber, the air inlet chamber is also communicated with a pressure relief pipe 9, and the pressure relief pipe 9 is provided with a pressure relief valve 10; the exhaust chamber is internally provided with a slide block 22, the top of the slide block 22 is provided with a driving part for driving the blood sampling tube rack 16 to move, the distance between the side wall of the exhaust chamber, which is just opposite to the air inlet chamber, and the limiting block 21 is equal to the sum of the length of the slide block 22 and the distance between the adjacent two slots 15, the communicating pipe 24 is communicated with the exhaust chamber, and the distance between the communicating point of the communicating pipe 24 on the exhaust chamber and the limiting block 21 is equal to the distance between the adjacent two slots 15. The top of the exhaust chamber is provided with an opening, the driving part is a magnet 23 fixed on the top of a sliding block 22, and the bottom of the blood sampling tube rack 16 is embedded with a ferromagnetic stainless steel bar.

Be equipped with the intermediate layer cavity in the lateral wall of cage 2, be equipped with the gas vent with intermediate layer cavity intercommunication on the inner wall of cage 2, the gas vent orientation grips gasbag 5, pressure release pipe 9, disappointing pipe 8 all with intermediate layer cavity intercommunication. The surface of the supporting plate 1 is adhered with a cloth pad, the end part of the cloth pad far away from the isolation cover 2 is sewed with a cloth extension pad 19, the extension pad 19 is provided with a through hole, and the vein pressing belt 18 is arranged in the through hole in a penetrating way.

The length of the groove is more than twice of the length of the blood sampling tube rack 16, the columnar air bag 27 of the jacking mechanism is positioned at the midpoint of the groove, and the transmission box 20 and the ratchet bar 17 are positioned at the left side of the jacking mechanism. The detachable connection between the arm bracket and the blood sampling tube bracket is realized through the screw connection between the supporting plate 1 and the base 13, the bottom of the specific base 13 is provided with a clamping groove, the side end of the supporting plate 1 transversely extends to form a clamping plate, corresponding threaded holes are formed in the clamping plate and the clamping groove, and the clamping plate is connected in the clamping groove through penetrating screws.

Embodiment 2, this embodiment is different from embodiment 1 in that an ultraviolet lamp is disposed in the isolation cover 2, as shown in fig. 3, a power supply 28 is disposed in the groove, a switch 29 is disposed in the air box 25, a switch knife 30 is disposed at the top of the inner side of the columnar air bag 27, and the ultraviolet lamp, the power supply 28, the switch 29, and the switch knife 30 are connected in series. When blood is not drawn, the columnar air bag 27 is not inflated, and the collapse of the columnar air bag 27 allows the switch blade 30 to close the switch 29, so that the ultraviolet lamp is energized, and the ultraviolet lamp sterilizes the inside of the isolation cover 2.

The specific implementation process is as follows: when not drawing blood, snuffle valve 11, relief valve 10 all close, and the column gasbag 27 collapses flat atrophy, and the blood sampling pipe is all in blood sampling pipe support 16's slot 15, and blood sampling pipe support 16 is located the climbing mechanism left side or strides in the climbing mechanism top, and guide cylinder 26 is relative with a via hole 14, and the right-hand member that slider 22 is located the exhaust chamber leans on with stopper 21 counterbalance, and the slider 22 bottom is with the shutoff of the intercommunication department of communicating pipe 24 and exhaust chamber.

When drawing blood, the patient arm is placed on layer board 1, will press arteries and veins area 18 ligature at arm elbow upside for extend to fill up 19 laminating in the arm rear side, the arm forearm is placed on the cloth pad of layer board 1, the palm stretches into in the cage 2, the handheld gasbag 5 of gripping of patient and continuous extrusion, the arm makes the elbow vein prominent with strength, the gas extrusion back of holding in the gasbag 5 under the effect of admitting air check valve 3, exhaust check valve 6 simultaneously gets into the air inlet chamber through blast pipe 7. Continuously extrude the in-process of gripping gasbag 5, the interior gas of admitting air increases atmospheric pressure and increases and promote slider 22 and remove, and slider 22 supports after removing a slot 15 interval and leans on the lateral wall of exhaust chamber, and the in-process that slider 22 removed drives blood sampling pipe support 16 through the adsorption of magnet 23 with ferromagnetism stainless steel strip and removes a slot 15 interval to the right-hand member of recess for a vacant unused blood sampling pipe removes the top of guide cylinder 26. Communicating pipe 24 no longer is stopped up by slider 22 with the intercommunication department of exhaust chamber this moment, and the indoor gaseous entering communicating pipe 24 of admitting air, and then get into in the gas box 25, the gaseous increase of making gas box 25 internal gas pressure that grips gasbag 5 of continuous extrusion, make then column gasbag 27 upwards expand along guide cylinder 26 after aerifing, pass the via hole 14 on the blood sampling pipe support 16 after the expansion of column gasbag 27, and then with the ascending jack-up of the blood sampling pipe in the slot 15, medical personnel can take this blood sampling pipe to use. Through above-mentioned process, the heparin tube is taken out, and the arm makes the elbow vein show with strength, then medical personnel treat to puncture the position to the elbow vein and disinfect the back and can carry out the operation of drawing blood. After the blood drawing is finished, the arms are evacuated from the supporting plate 1, the medical staff open the pressure release valve 10 and the air release valve 11, the blood collection tube is marked with the name of the patient and the like and then inserted back into the corresponding slot 15 on the blood collection tube frame 16, and the columnar air bag 27 is extruded in the inserting back process, so that the columnar air bag 27 collapses, and the gas in the columnar air bag 27 enters the interlayer cavity of the isolation cover 2. The slide block 22 is manually adjusted to return to the position abutting against the limiting block 21, specifically, the slide block 22 can be pushed by a rod piece from the opening at the right end of the groove, or corresponding strip-shaped holes can be formed in the side walls of the transmission box 20 and the base 13, and a shifting lever penetrating through the strip-shaped holes is arranged on the slide block 22 and then pulled to operate. The moving direction of the slide block 22 is opposite to the direction of the ratchet bar 17 during the resetting process, so that the blood sampling tube rack 16 is prevented by the ratchet bar 17 from moving along the moving process of the slide block 22, and the force for pushing the slide block 22 overcomes the adsorption force between the magnet 23 and the ferromagnetic stainless steel strip. The air entering the interlayer cavity of the isolation cover 2 blows, dries and ventilates the holding air bag 5 and the interior of the isolation cover 2.

In embodiment 2, the power supply circuit of the ultraviolet lamp in the isolation hood 2 is disconnected after the blood collection tube is jacked up, so that the duration that the palm is irradiated by ultraviolet rays in the isolation hood 2 is reduced, after the blood collection is finished, the palm is taken out from the isolation hood 2, the blood collection tube is inserted back into the slot 15, so that the power supply circuit of the ultraviolet lamp is conducted again, and then the ultraviolet lamp is electrified again to sterilize the inside of the isolation hood 2 and the surface of the holding airbag 5.

Claims

1. The utility model provides a blood sampling multifunctional device which characterized in that: the blood sampling tube bracket comprises an arm bracket and a blood sampling tube bracket, wherein the arm bracket and the blood sampling tube bracket are vertically distributed and detachably connected; the blood sampling tube bracket comprises a blood sampling tube rack and a base, the blood sampling tube rack is transversely connected to the base in a sliding manner, the blood sampling tube rack is rectangular, a plurality of slots with openings at the upper ends are arranged on the blood sampling tube rack side by side, via holes penetrating through the blood sampling tube rack are formed in the bottoms of the slots, and the slots are uniformly distributed along the length direction of the blood sampling tube rack; the base is provided with a transmission mechanism for driving the blood sampling tube rack to transversely translate on the base and a jacking mechanism for driving the blood sampling tube rack to vertically translate on the blood sampling tube rack, the jacking mechanism comprises a gas box fixed at the bottom of the groove, the top end of the gas box is connected with a columnar gas bag, the top end of the gas box is provided with a gas hole communicated with the interior of the columnar gas bag, the cross-sectional dimension of the columnar gas bag is smaller than the dimension of the through hole, the outer side of the columnar gas bag is provided with a guide cylinder fixed on the gas box, the side end of the gas box is communicated with a communicating pipe, the communicating pipe is communicated with the transmission mechanism, the side end of the gas box is also connected with a gas release pipe, and the gas release pipe is provided with a gas release valve; the air bag gripping device comprises a base, a driving mechanism and an air bag, wherein the base is provided with a groove with an opening at the top and one side end, the side wall of the groove is provided with a limiting convex rib, the driving mechanism comprises a driving box fixed below the limiting convex rib, the inner space of the driving box is divided into an air inlet chamber and an air outlet chamber through a fixedly connected limiting block, the gripping air bag is connected with an air outlet pipe, the air outlet pipe is provided with an exhaust check valve, one end of the air outlet pipe is communicated with the driving mechanism, the other end of the air outlet pipe is communicated with the air inlet chamber, the air inlet chamber is also communicated with a pressure relief pipe, and the pressure relief valve is arranged on the pressure relief pipe; a sliding block is arranged in the exhaust chamber, a driving piece for driving the blood sampling pipe frame to move is arranged at the top of the sliding block, the distance between the side wall of the exhaust chamber, which is opposite to the air inlet chamber, and the limiting block is equal to the sum of the length of the sliding block and the distance between the adjacent two slots, the communicating pipe is communicated with the exhaust chamber, and the distance between the communicating point of the communicating pipe on the exhaust chamber and the limiting block is equal to the distance between the adjacent two slots; the arm bracket comprises a supporting plate, a holding air bag is connected to the supporting plate, and the holding air bag, the transmission mechanism and the jacking mechanism are sequentially connected; the supporting plate is also connected with a pulse pressing belt.

2. A multifunctional device for venous blood collection according to claim 1, characterized in that: the pressure pulse area is connected to the one end of layer board, and other end integrated into one piece has the cage, the gasbag that grips is connected in the cage, grips the gasbag and is connected with the intake pipe, is equipped with the check valve that admits air in the intake pipe.

3. A multifunctional device for venous blood collection according to claim 2, characterized in that: the holding air bag is in an ellipsoid shape, the air inlet pipe and the exhaust pipe are rigid pipes, the air inlet pipe and the exhaust pipe are respectively located at two ends of a long shaft of the holding air bag, and the air inlet pipe and the exhaust pipe are respectively arranged on the left side wall and the right side wall of the isolation cover in a penetrating mode.

4. A multifunctional device for venous blood collection according to claim 3, characterized in that: the base is rectangular block-shaped, the blood sampling pipe support passes through spacing fin support in the recess, climbing mechanism is located the below of spacing fin.

5. The multifunctional device for venous blood collection according to claim 4, characterized in that: the top of the exhaust chamber is provided with an opening, the driving piece is a magnet fixed at the top of the sliding block, and the bottom of the blood sampling pipe frame is embedded with a ferromagnetic stainless steel bar; the bottom of the blood sampling pipe support is provided with a ratchet bar corresponding to the part of the limiting convex rib, the upper end of the limiting convex rib is also provided with the ratchet bar, and the ratchet of the ratchet bar on the limiting convex rib inclines towards the side end opening of the groove.

6. The multifunctional device for venous blood collection according to claim 5, characterized in that: be equipped with the intermediate layer cavity in the lateral wall of cage, be equipped with the gas vent with intermediate layer cavity intercommunication on the inner wall of cage, the gas vent orientation grips the gasbag, pressure release pipe, disappointing pipe all communicate with the intermediate layer cavity.

7. A multifunctional device for venous blood collection according to claim 6, characterized in that: the surface of the supporting plate is bonded with a cloth pad, the end part of the cloth pad far away from the isolation cover is sewn with a cloth extending pad, a through hole is arranged on the extending pad, and the pulse pressing belt is arranged in the through hole in a penetrating mode.