CN109893141B - A fixing device for blood collection - Google Patents
A fixing device for blood collection Download PDFInfo
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- CN109893141B CN109893141B CN201910199177.1A CN201910199177A CN109893141B CN 109893141 B CN109893141 B CN 109893141B CN 201910199177 A CN201910199177 A CN 201910199177A CN 109893141 B CN109893141 B CN 109893141B
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- 239000008280 blood Substances 0.000 title claims abstract description 44
- 210000004369 blood Anatomy 0.000 title claims abstract description 44
- 210000004907 gland Anatomy 0.000 claims abstract description 77
- 238000010241 blood sampling Methods 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 210000003437 trachea Anatomy 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 238000000034 method Methods 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 239000002390 adhesive tape Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 4
- 210000004204 blood vessel Anatomy 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The invention relates to the field of medical instruments, in particular to a fixing device for blood sampling, which comprises a base, wherein an arm support is arranged on the base, a groove is formed in the top of the arm support, the fixing device also comprises a gland capable of vertically sliding, the gland is positioned above the arm support, a fastening mechanism is arranged on the gland, the fastening mechanism comprises a fastening belt and two belt wheels rotatably connected to the gland, two ends of the fastening belt are respectively wound on the two belt wheels, and a first torsion spring is arranged between each belt wheel and the gland; a locking mechanism is arranged between the gland and the arm support. This scheme has realized pricking the accurate fixed at arm position to the handle of blood taking needle and syringe needle.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a fixing device for blood sampling.
Background
In the medical and health industry at present, doctors can use blood collecting needles to collect blood for patients, so that the purposes of detecting diseases and preventing or treating diseases are achieved. As shown in a figure 6 in the attached drawings, the existing blood taking needle comprises a needle head 32, a handle 30 and a blood taking tube, when the blood taking is carried out, a doctor holds the handle 30 by hand to pierce the needle head 32 into a blood vessel in an arm 44, after the needle head 32 enters the blood vessel, the doctor uses a bandage 31 to wind the positions of the handle 30 and the position of the needle head 32 piercing the arm 44 respectively, so that the blood taking needle is fixed, the needle head 32 is prevented from falling off in the blood taking process, and the normal and safe blood taking work is guaranteed.
However, since the bandage is required to be wound around the arm several times, the fixing of the lancet is troublesome. In order to solve the technical problem, the blood taking needle fixing device with the utility model patent publication number of CN208404592U comprises a base, an arm support is fixed on the base, a gland is arranged at the top of the arm support, one end of the gland is rotatably connected to the arm support, a locking mechanism is arranged between the other end of the gland and the arm support, a first groove is arranged at the position of the gland facing the arm support, a first air bag is arranged in the first groove, a second groove is arranged at the position of the arm support opposite to the first groove, a second air bag is arranged in the second groove, an air heater is arranged in the base, a first air duct is connected between the air heater and the first air bag, and a second air duct is connected between the air heater and the second air bag; the device realizes the automatic fixation of the blood taking needle in the blood taking process, and is simple and convenient to operate.
However, in the above patent, in order to fix the blood taking needle on the arm by using the first air bag, since the first air bag has a large volume, the first air bag can only fix the whole blood taking needle in a fuzzy manner, and the first air bag cannot fix the handle part of the blood taking needle and the arm part penetrated by the needle accurately, so that the blood taking needle is likely to move in the arm in practical application. In addition, since the arms are wrapped by the first air bag and the second air bag, on one hand, the area of the wrapped part of the arm is large, so that the arm is easy to be stressed and discomfort is brought to a patient; on the other hand, in summer, the positions of the arms wrapped by the first air bag and the second air bag are inconvenient to ventilate, and the arms feel sultry during blood collection and are also inconvenient for patients.
Disclosure of Invention
The invention aims to provide a fixing device for blood sampling, which is used for realizing accurate fixation of a handle and a needle head of a blood sampling needle for puncturing an arm part.
In order to achieve the purpose, the technical scheme of the invention is as follows: a fixing device for blood sampling comprises a base, wherein an arm support is arranged on the base, a groove is formed in the top of the arm support, the fixing device also comprises a gland capable of sliding vertically, the gland is located above the arm support, a fastening mechanism is arranged on the gland, the fastening mechanism comprises a fastening belt and two belt wheels rotatably connected to the gland, two ends of the fastening belt are respectively wound on the two belt wheels, and first torsion springs are arranged between the two belt wheels and the gland; a locking mechanism is arranged between the gland and the arm support.
The working principle of the scheme is as follows: the base is used for supporting the whole device. The arm holds in the palm and is used for supporting the arm, and the recess is used for holding the arm. The gland is used for covering the arm, and the locking mechanism is used for locking the gland and the arm support together, so that the gland and the arm support are more stable in covering. When blood is collected, a doctor inserts a needle head of a blood collecting needle into a blood vessel of an arm, preliminarily fixes the part of the needle head puncturing the arm and a handle by using an adhesive tape, then places the arm in a groove of an arm support with a palm upward, and enables a gland cover to cover the arm support, after the gland cover is covered, a fastening belt is attached to the handle of the blood collecting needle and the part of the needle head puncturing the arm, and extrudes the handle of the blood collecting needle and the part of the arm punctured by the needle head, so that the fixing of the handle of the blood collecting needle and the part of the needle head puncturing the arm is realized.
When adopting above-mentioned technical scheme, have following beneficial effect: 1. when the blood taking needle on the arm is fixed by a doctor, only two adhesive tapes are required to be pasted on the arm, then the pressing cover is used for directly covering the arm support, the fastening tape on the pressing cover directly fixes the position of the needle head of the blood taking needle for puncturing the arm and the handle, other positions of the arm do not need to be wound, and compared with a mode of winding a plurality of circles on the arm by using a bandage, the fixing mode of the blood taking needle is simpler and is convenient to operate. 2. Use the fastening area to fix, compare and use the gasbag to carry out the mode of fixing, the fastening area direct action punctures the position of arm and the position of handle at the syringe needle, and fixed position has certain pertinence to realized puncturing the accurate fixed of arm position to the handle of blood taking needle and syringe needle, fixed effect is better. 3. Use the fastening area to fix, compare and use two gasbags to fix, the arm can not lived by two gasbag parcels to do benefit to ventilative, especially in the hot summer, the arm can not feel stifled, has improved patient's comfortable degree. 4. Because the gland slides in vertical direction, compare convertible gland, each position of gland can contact with the arm simultaneously, prevents that one side of gland from contacting with the arm earlier, contacts with the arm behind the opposite side of gland to make the fixed effect of gland better. 5. Because the tip winding of fastening area is on the band pulley, is equipped with first torsional spring on the band pulley, so the fastening area pastes back on the arm, and first torsional spring makes the band pulley have the trend of winding fastening area to make the fastening area act on and have certain tightness dynamics on the arm, further improved fixed stability. In addition, because the belt wheel can rotate, the length of the fastening belt can be automatically adjusted, so that the fastening belt can adapt to arms with different thicknesses.
Further, locking mechanism includes magnet and iron plate, and magnet is located the top that the arm held in the palm, and the iron plate is located the bottom of gland. The pressing cover can be fixed on the arm support through the attraction of the magnet and the iron block, when the pressing cover is not needed, the pressing cover and the arm support can be separated through slight force, and the operation is simple.
Further, the locking mechanism comprises a connecting plate fixedly connected to the gland, a first rack and a fixed rod which are both vertically arranged are fixedly connected to the connecting plate, a fixed hole is formed in the fixed rod, a smooth section is arranged at the top of the first rack, a first gear is meshed with the first rack, a rotating shaft is connected to the first gear, a second gear is fixedly connected to the rotating shaft, a second torsion spring is connected to the second gear, and a one-way bearing is connected between the first gear and the rotating shaft; the base is fixedly connected with a fixed shell, a through hole which can be right opposite to the fixed hole is formed in the fixed shell, a second gear is meshed with a second rack which is transversely arranged, the end part, close to the fixed shell, of the second rack is connected with a telescopic pipe, a spring is arranged in the telescopic pipe, and a wedge block is arranged at the end part, far away from the second rack, of the telescopic pipe.
When the cover closes the gland, the gland slides downwards, the gland drives the first rack and the fixed rod to move downwards through the connecting plate, the first rack drives the first gear to rotate, the first gear drives the rotating shaft to rotate through the one-way bearing, the rotating shaft drives the second gear to rotate, the second gear drives the second rack to move towards the direction close to the fixed shell, and the wedge blocks on the second rack start to penetrate through the through holes in the fixed shell. Along with the continuation downstream of dead lever, the dead lever offsets with the voussoir, and the dead lever promotes the voussoir, and the voussoir extrudees flexible pipe, and flexible pipe extrudees the spring, and flexible pipe holds power, and along with the downstream of dead lever, when the fixed block on the dead lever just right moment with the through-hole on the fixed shell, the voussoir enters into the fixed orifices on the dead lever under the effect of flexible pipe elasticity to fix the dead lever, gland and arm support lock together, realized the automatic locking of gland and arm support from this and be in the same place. The second gear is connected with a second torsion spring, so when the second gear rotates, the second torsion spring stores power by the second gear, after the second rack stops moving towards the direction close to the fixed shell, the second gear reversely rotates under the action of the elastic force of the second torsion spring, the second gear drives the second rack to move towards the direction far away from the fixed shell, the second rack gradually comes out from the through hole of the fixed shell and the fixed hole of the fixed rod, and after the second rack, the telescopic pipe and the wedge block completely come out from the through hole of the fixed shell and the fixed hole of the fixed rod, the fixed rod and the fixed shell are unlocked, so that the automatic unlocking of the gland and the arm support is realized, manual control is not needed, the moving speed of the second rack coming out from the fixed shell can be controlled according to the flow rate of blood sampling, and the gland and the arm support are automatically unlocked when the required blood sampling amount is just reached. Of course, when the first rack slides downwards to the limit position, the second rack can be manually pushed into the fixing hole, so that the length of the second rack inserted into the fixing hole and the through hole is prolonged, the second rack enables the power of the second torsion spring on the second gear to be more, the time for moving the second rack out of the fixing hole is prolonged, the time for releasing the locking of the gland and the arm support is prolonged, and the blood sampling amount is increased under the condition that the blood sampling flow rate is not changed due to the prolonged time, so that the blood sampling device is suitable for blood sampling under the condition that the blood sampling amount is more. From this, can make the time that gland and arm held in the palm the locking adjustable according to the size of the volume of taking a blood sample through this scheme, required volume of taking a blood sample is more promptly, can make the second rack enter into the length in fixed orifices and the through-hole more.
In the process that the second torsion spring enables the second gear to rotate reversely, the second gear drives the rotating shaft to rotate reversely, the rotating shaft drives the first gear to rotate through the one-way bearing, and the top end of the first rack is a smooth section, so that the first gear cannot be meshed with the first rack, and the first gear is in an idle running state. When the upward movement gland, the gland passes through the connecting plate and drives dead lever and first rack rebound, first rack drives first gear revolve, because the direction of rotation when first rack rebound is compared to the direction of rotation of first gear this moment is opposite, so first gear is in idle running state under the effect of one-way bearing, first gear can not drive the pivot through one-way bearing and rotate, the pivot can not drive second gear revolve, thereby can not make the second rack to keeping away from the set casing direction and remove, guaranteed that the second rack is in static state.
Furthermore, the device also comprises a pointer, wherein scales are arranged on the second rack, and the pointer points on the scales. Can set up the scale through certain conversion relation on the second rack, scale on the second rack is from the one end that the second rack is close to flexible pipe to the scale value grow gradually of the other end, like this, when the blood of different volume is gathered to needs, through the scale that the pointer indicates alright direct reading out the blood sampling volume that will gather, more directly perceived, the operation of being convenient for.
Further, be equipped with gasbag and gas pitcher on the base, the bottom of first rack is equipped with the clamp plate, be connected with first trachea and second trachea between gas pitcher and the gasbag, be equipped with the first check valve that is arranged in making the gaseous one-way inflow in the gasbag on the first trachea, be equipped with the second check valve that is arranged in making the gaseous one-way inflow in the gas pitcher in the second trachea, the one end that second trachea and gasbag are connected is inserted in the gasbag, and one of second trachea position in the gasbag is served and is equipped with the whistle. When first rack moves down, first rack drives the clamp plate and moves down, and the clamp plate extrudees the gasbag downwards, and gas in the gasbag enters into the gas pitcher through first trachea and first check valve because of receiving the extrusion, the atmospheric pressure grow in the gas pitcher. When the second rack no longer locks dead lever and fixed shell, the gas in the gas pitcher enters into the gasbag through second trachea and second check valve under the effect of atmospheric pressure, and the gasbag grow, and the gasbag promotes first rack rebound to be convenient for first rack rebound resets. Simultaneously, the gas in the second trachea blows the whistle that the mouth of pipe set up when flowing into in the gasbag to sound reminds the doctor to reach the blood sampling volume, need extract the blood taking needle.
Furthermore, a soft cushion is arranged in the groove. The soft cushion is softer, and the comfort level of the arm placed in the groove is improved.
Further, the number of the fastening mechanisms is two. Therefore, the two fastening belts can fix the part of the needle penetrating the arm and the handle.
Furthermore, four limit plates surrounding the base are arranged on the base, and the air bag is positioned in the four limit plates. The limiting plate is used for limiting the air bag, prevents the air bag from deforming when being extruded by the pressing plate, and is beneficial to the pressing plate to extrude the gas in the air bag into the gas tank.
Further, the gland is "n" shape. The n-shaped gland ensures that the middle part of the gland is a cavity, so that the arm can be clamped, and the function of stabilizing the arm is achieved. And when the fastening belt is tightly attached to the arm, the cavity can provide space for the fastening belt to arch upwards.
Furthermore, the bottom of the base is provided with a sucker. The base can be adsorbed on the desktop by the sucker, so that the base is prevented from sliding on the desktop, and the stability of the base in use is improved.
Drawings
FIG. 1 is a schematic view of a blood collection fixing device;
FIG. 2 is a right side view of the first rack, the second rack, the first gear and the second gear of FIG. 1;
FIG. 3 is an enlarged view taken at A in FIG. 1;
FIG. 4 is a schematic view of the cover closing on the arm rest;
FIG. 5 is a schematic view showing a doctor preliminarily fixing the lancet using an adhesive tape;
fig. 6 is a schematic view showing a doctor fixing a lancet using a bandage in the prior art.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a base 1, a sucker 2, an arm support 3, a soft pad 4, a vertical rail 5, a fastening belt 6, a belt wheel 7, a gland 8, a connecting plate 9, a fixing rod 10, a first rack 11, a pointer 12, a first gear 13, a second gear 14, a second rack 15, a pressing plate 16, an air tank 17, a second air pipe 18, a first air pipe 19, a first one-way valve 20, a second one-way valve 21, an air bag 23, a limiting plate 24, a spring 25, an extension pipe 26, a wedge block 27, a rotating shaft 28, an adhesive tape 29, a handle 30, a bandage 31, a needle 32 and an arm 44.
Example 1
Substantially as shown in figures 1 to 5 of the accompanying drawings: a fixing device for blood sampling comprises a base 1, wherein a sucker 2 is arranged at the bottom of the base 1. The arm support 3 is fixedly connected to the base 1 through bolts, a groove used for placing an arm is formed in the top of the arm support 3, and a cushion 4 is arranged in the groove. Through bolt fixedly connected with vertical rail 5 on the base 1, sliding connection has the gland 8 that is located the top that the arm held in the palm 3 on vertical rail 5, and is concrete, is equipped with the spout on the gland 8, and spout sliding connection is on vertical rail 5. A pressure spring (not shown in the figure) is connected between the gland 8 and the base 1, a telescopic cylinder is sleeved on the outer side of the pressure spring, and the gland 8 is n-shaped. The gland 8 is provided with two fastening mechanisms. Every fastening device all includes a fastening belt 6 and two band pulleys 7 of rotating connection on gland 8, and two band pulleys 7 rotate the left and right both sides of connecting at gland 8 through the axle respectively, and the both ends of fastening belt 6 twine respectively on two band pulleys 7, all is equipped with first torsional spring between two band pulleys 7 and the gland 8. Both sides of the bottom of the gland 8 are provided with belt openings, so that the fastening belt 6 can penetrate out of the gland 8 conveniently. The base 1 is adhered with an air bag 23 and is fixed with an air tank 17 through bolts, the base 1 is provided with four limit plates 24 (only two are drawn in the figure) which are surrounded together, and the air bag 23 is positioned in the four limit plates 24. A first air pipe 19 and a second air pipe 18 are connected between the air tank 17 and the air bag 23, a first one-way valve 20 used for enabling air in the air bag 23 to flow into the air pipe in a one-way mode is arranged on the first air pipe 19, a second one-way valve 21 used for enabling air in the air tank 17 to flow into the air bag 23 in a one-way mode is arranged on the second air pipe 18, the left end of the second air pipe 18 is inserted into the air bag 23, the air bag 23 and the pipe wall of the second air pipe 18 are bonded and sealed, and a whistle is arranged at one end, located in the air bag 23, of the second air pipe 18.
A locking mechanism is arranged between the gland 8 and the arm support 3. Locking mechanism includes connecting plate 9 through bolt fixed connection on 8 right sides of gland, is first rack 11 and the dead lever 10 of vertical setting through bolt fixed connection on the connecting plate 9, and first rack 11 is located the right side of dead lever 10, is equipped with the fixed orifices on the right flank of dead lever 10, and the bottom of dead lever 10 is equipped with the wedge surface, and there is clamp plate 16 bottom of first rack 11 through the bolt fastening, and the top of first rack 11 is equipped with smooth section. Two risers (not shown in the figure) are fixedly connected to the base 1 through bolts, the two risers are respectively located on the front side and the rear side of the arm support 3, as shown in a combined view of fig. 2, a first gear 13 meshed with the first rack 11 is rotatably connected to the riser on the rear side, a rotating shaft 28 is connected to the first gear 13, a second gear 14 is welded to the other end of the rotating shaft 28, a second torsion spring is connected between the second gear 14 and the riser on the front side, and a one-way bearing is connected between the first gear 13 and the rotating shaft 28. The fixing shell is fixedly connected with the fixing shell below the fixing rod 10 through bolts on the base 1, the middle of the fixing shell is of a hollow structure, an opening is formed in the top of the fixing shell, and a through hole which can be right opposite to a fixing hole in the fixing rod 10 is formed in the right side face of the fixing shell. A second gear 15 transversely arranged is engaged on the second gear 14, the second gear 15 is transversely connected to a vertical plate on the front side in a sliding manner, an extension tube 26 is connected to the left end portion of the second gear 15, as shown in fig. 3, a spring is arranged in the extension tube 26, and a wedge block 27 is welded to the left end portion of the extension tube 26. The telescopic tube 26 in this embodiment is formed by sleeving a plurality of sleeves, and adjacent sleeves can slide relative to each other. In addition, a pointer 12 is welded to the rear vertical plate, a scale for indicating the blood sampling amount is provided on the upper surface of the second rack 15, the pointer 12 points on the scale, and the scale value is gradually increased from the left end to the right end of the second rack 15.
The specific implementation process is as follows: initially, the gland 8 is in the condition shown in figure 1 under the action of the compression spring, and the gland 8 is separated from the arm rest 3. When blood sampling is required, as shown in fig. 5, the doctor pierces the needle 32 of the blood sampling needle into the arm 44, and then performs primary fixing of the portion of the needle 32 penetrated into the arm 44 and the handle 30 using the tape 29. After the fixation with the adhesive tape 29, the patient puts the arm 44 into the groove of the arm support 3 with the palm of the patient facing upward, and the needle 32 of the blood taking needle and the punctured part of the arm 44 and the handle 30 are sequentially opposite to the two fastening belts 6 on the gland 8. Then pressing down the gland 8, moving the gland 8 downwards, and as shown in fig. 4, the fastening belt 6 on the gland 8 is attached to the arm 44, the fastening belt 6 is squeezed by the arm 44 to pull the end of the fastening belt 6 downwards, the fastening belt 6 drives the belt wheel 7 to rotate, the belt wheel 7 stores the force of the first torsion spring, the first torsion spring enables the belt wheel 7 to have the tendency of rotating in the opposite direction, so that the two fastening belts 6 are respectively attached to the handle 30 and the position of the needle 32 puncturing the arm 44, and the handle 30 and the needle 32 of the blood taking needle can puncture the arm 44 accurately and fix the position. It will be readily appreciated that, since the pulley 7 is rotatable, the length of the tightening strap 6 can be adjusted to accommodate arms 44 of different thicknesses.
In the process that the gland 8 moves downwards, the gland 8 drives the fixing rod 10 and the first rack 11 to move downwards through the connecting plate 9, the first rack 11 drives the first gear 13 to rotate clockwise, the first gear 13 drives the rotating shaft 28 to rotate through the one-way bearing, the rotating shaft 28 drives the second gear 14 to rotate clockwise, the second gear 14 drives the second rack 15 to move leftwards, and the left end of the second rack 15 begins to enter the through hole of the fixing shell. Meanwhile, as the fixed rod 10 moves downwards, the bottom end of the fixed rod 10 enters the fixed shell, the bottom end of the fixed rod 10 abuts against the wedge 27 at the left end of the second rack 15, the fixed rod 10 pushes the wedge 27 to move rightwards, the wedge 27 extrudes the telescopic pipe 26, the telescopic pipe 26 shortens, the spring 25 stores force, and therefore the fixed rod 10 smoothly moves downwards. When the fixing hole on the fixing rod 10 is just right opposite to the through hole on the fixing shell, the wedge block 27 rapidly enters into the fixing hole of the fixing rod 10 under the elastic action of the spring 25, so that the fixing rod 10 and the fixing shell are fixed together, the fixing of the gland 8 and the arm support 3 is further realized, the gland 8 cannot move upwards, and the fastening belt 6 is used for fixing the blood taking needle.
During clockwise rotation of the second gear 14, the second gear 14 causes the second torsion spring to accumulate force. After the second rack 15 stops moving leftward, the second torsion spring makes the second gear 14 rotate counterclockwise, the second gear 14 makes the second rack 15 move slowly rightward, and the second rack 15 starts to move out gradually from the fixing hole and the through hole, so that the automatic release of the locking of the fixing lever 10 and the fixing housing is realized. The second gear 14 drives the rotating shaft 28 to rotate, the rotating shaft 28 drives the first gear 13 to rotate counterclockwise through the one-way bearing, and the top end of the first rack 11 is a smooth section, so that the first rack 11 is not meshed with the first gear 13, and the first rack 11 does not block the first gear 13 to rotate counterclockwise. After the locking of the fixing rod 10 and the fixing case is automatically released, the pressing cover 8 is moved upward by the elastic force of the pressing spring to be reset.
It is easy to understand that it takes a certain time for the second rack 15 to move out of the fixing hole and the through hole, and accordingly, the moving speed of the second rack 15 out of the fixing case can be controlled according to the blood sampling flow rate, so that the locking of the pressing cover 8 and the arm rest 3 is automatically released when the blood sampling amount is about to reach. Of course, when the first rack 11 slides down to the limit position, the second rack 15 can also be manually pushed leftward, and when the second rack 15 is pushed, the scale indicated by the pointer 12 can be manually read, because the length of the second rack 15 inserted into the fixing hole and the through hole is longer, the second rack 15 enables the accumulated force of the second torsion spring on the second gear 14 to be greater, the time for moving the left end of the second rack 15 out of the fixing hole is also longer, the time for unlocking the gland 8 and the arm support 3 is longer, and because the time is longer, the blood sampling amount is greater under the condition that the blood sampling flow rate is not changed, and the blood sampling device is suitable for blood sampling under the condition that the blood sampling amount is greater. From this, can make the time that gland 8 and arm hold in the palm 3 locking be adjustable according to the size of the volume of taking a blood sample through this scheme, required volume of taking a blood sample is more promptly, can make second rack 15 enter into the length in fixed orifices and the through-hole more left can.
During the downward movement of the first rack 11, the pressure plate 16 at the bottom end of the first rack 11 presses the air bag 23, the air in the air bag 23 enters the air tank 17 through the first air pipe 19 and the first check valve 20, and the air pressure in the air tank 17 becomes high. When the first rack 11 moves upward, the pressure plate 16 is disengaged from the air bag 23, and the air in the air tank 17 enters the air bag 23 through the second air pipe 18 and the second check valve 21 under the action of the self air pressure, so that the air bag 23 is restored. When the air bag 23 is expanded and restored, the air bag 23 can push the first rack 11 to move upwards, so that the first rack 11 can be conveniently moved upwards and restored. Meanwhile, the air in the second air tube 18 blows out from the left end to blow the whistle, so that a sound is produced to remind a doctor that the gland 8 is opened and the blood sampling is to be finished and the blood sampling needle needs to be pulled out in time.
The sucking disc 2 makes base 1 tightly adsorb on the desktop, prevents that blood sampling in-process, and base 1 from taking place to slide for the desktop, has guaranteed the normal clear of blood sampling.
Example 2
Example 2 differs from example 1 in that: the locking mechanisms have different structures and are simpler in structure. Specifically, locking mechanism includes magnet and iron plate in this embodiment, and magnet is located the top of arm support 3, and the iron plate is located the bottom of gland 8. Therefore, the iron blocks on the gland 8 and the magnets on the arm support 3 can cover the gland 8 on the arm support 3 through attraction, and after blood sampling is finished, the gland 8 is pushed upwards with slight force, so that the iron blocks of the gland 8 can be separated from the magnets on the arm support 3.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various changes and modifications without departing from the concept of the present invention, and these should be construed as the scope of protection of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent. The techniques, shapes, and structural parts, which are omitted from the description of the present invention, are all known techniques.
Claims (8)
1. The utility model provides a fixing device is used in blood sampling, includes the base, be equipped with the arm on the base and hold in the palm, the top that the arm held in the palm is equipped with recess, its characterized in that: the arm support is arranged on the arm support, the pressing cover is positioned above the arm support, a fastening mechanism is arranged on the pressing cover, the fastening mechanism comprises a fastening belt and two belt wheels which are rotatably connected to the pressing cover, two ends of the fastening belt are respectively wound on the two belt wheels, and first torsion springs are arranged between the two belt wheels and the pressing cover; a locking mechanism is arranged between the gland and the arm support;
the locking mechanism comprises a connecting plate fixedly connected to the gland, a first rack and a fixed rod which are vertically arranged are fixedly connected to the connecting plate, a fixed hole is formed in the fixed rod, a smooth section is arranged at the top of the first rack, a first gear is meshed with the first rack, a rotating shaft is connected to the first gear, a second gear is fixedly connected to the rotating shaft, a second torsion spring is connected to the second gear, and a one-way bearing is connected between the first gear and the rotating shaft; the base is fixedly connected with a fixed shell, a through hole which can be just opposite to the fixed hole is formed in the fixed shell, a second gear is meshed with a second rack which is transversely arranged, the end part, close to the fixed shell, of the second rack is connected with a telescopic pipe, a spring is arranged in the telescopic pipe, and a wedge block is arranged at the end part, far away from the second rack, of the telescopic pipe.
2. The fixing device for blood collection according to claim 1, wherein: the second rack is provided with scales, and the pointer points on the scales.
3. The fixing device for blood collection according to claim 1, wherein: be equipped with gasbag and gas pitcher on the base, the bottom of first rack is equipped with the clamp plate, be connected with first trachea and second trachea between gas pitcher and the gasbag, be equipped with the first check valve that is arranged in making the gaseous one-way inflow in the gasbag on the first trachea, be equipped with the second check valve that is arranged in making the gaseous one-way inflow in the gas pitcher on the second trachea, the one end that second trachea and gasbag are connected is inserted in the gasbag, and one that the second trachea is arranged in the gasbag is served and is equipped with the whistle.
4. A fixing device for blood collection according to any one of claims 1 to 3, wherein: a soft cushion is arranged in the groove.
5. The blood collection fixing device according to claim 4, wherein: the number of the fastening mechanisms is two.
6. A fixing device for blood collection according to claim 3, wherein: the base is provided with four limiting plates which surround the base, and the air bag is positioned in the four limiting plates.
7. The fixing device for blood collection according to claim 1, wherein: the gland is "n" shape.
8. The fixing device for blood collection according to claim 1, wherein: and a sucker is arranged at the bottom of the base.
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| CN201910199177.1A CN109893141B (en) | 2019-03-15 | 2019-03-15 | A fixing device for blood collection |
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| CN112401880B (en) * | 2020-10-22 | 2022-07-12 | 中国人民解放军陆军军医大学第二附属医院 | A blood oxygen monitoring device for wearing on the finger |
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