CN215078605U - Multi-head blood sampling pen - Google Patents

Abstract

The utility model provides a bull blood sampling pen, including solid fixed cylinder, linear drive subassembly, rotary drive subassembly, the fixed subassembly of many needles and degree of depth adjustment subassembly, the bottom and the degree of depth adjustment subassembly joint of solid fixed cylinder are fixed, the fixed subassembly of linear drive subassembly, rotary drive subassembly and many needles all sets up in the inside of solid fixed cylinder, just solid fixed cylinder is visited on the top of linear drive subassembly, rotary drive subassembly sets up and is used for controlling the fixed subassembly of many needles and rotates between the fixed subassembly of linear drive subassembly and many needles, the inside a plurality of blood taking needles that is provided with of the fixed subassembly of many needles, be provided with the actuating lever in the linear drive subassembly and be used for pressing the blood taking needle in order to take a blood sample. The utility model discloses a be provided with a plurality of blood taking needles in the fixed subassembly of bull blood sampling pen's many needles, can use in proper order to improve the use number of times, reduce and change the frequency, improve the efficiency of blood sampling work.

Description

Multi-head blood sampling pen

Technical Field

The utility model belongs to blood sampling equipment field especially relates to a bull blood sampling pen.

Background

The blood taking needle is used for blood sampling, and conventional physical examination, blood sugar inspection etc. all need use the blood taking pen, and the blood taking pen is the one kind of blood taking needle, structurally adopts mechanical device more, and the syringe needle adopts jettison device, can accomplish almost completely accurate, quick, depth moderate degree, sharp route pierces through skin, greatly reduced patient's pain, make the sample get into a new development stage, solved two first generations of blood taking needles pain sense strong, wound big scheduling problem basically.

The blood taking needles commonly used in the market at present are similar to pistols and pens, can attract the attention of children, reduce the psychological pressure and have the same effect on adult patients. However, the existing blood taking needles can be used only once and then need to be replaced, and time is wasted in the actual use process.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the multi-needle blood sampling pen of the utility model has the advantages that a plurality of blood sampling needles are arranged in the multi-needle fixing component and can be used in sequence, thereby improving the use times, reducing the replacement frequency and improving the efficiency of blood sampling work; meanwhile, the linear driving assembly is arranged in the blood sampling device and used for pressing the blood sampling needles for blood sampling, and the rotary driving assembly is arranged for replacing a plurality of blood sampling needles, so that one blood sampling needle is used only once, the blood sampling safety is ensured, and the infection of diseases in the blood sampling process is avoided; the depth adjusting assembly is arranged for adjusting the needle outlet height of the blood taking needle, so that the depth of the blood taking needle for puncturing skin is reduced, and the blood taking needle is convenient to use normally.

In order to solve the technical problem, the utility model discloses a technical scheme is: bull blood sampling pen, including solid fixed section of thick bamboo, sharp drive assembly, rotary drive subassembly, the fixed subassembly of many needles and degree of depth adjustment subassembly, the bottom and the degree of depth adjustment subassembly joint of solid fixed section of thick bamboo are fixed, sharp drive assembly, rotary drive subassembly and the fixed subassembly of many needles all set up the inside at solid fixed section of thick bamboo, just solid fixed section of thick bamboo is stretched out on the top of sharp drive assembly, rotary drive assembly sets up and is used for controlling the fixed subassembly of many needles to rotate between sharp drive assembly and the fixed subassembly of many needles, the inside a plurality of blood taking needles that are provided with of the fixed subassembly of many needles, be provided with the actuating lever in the sharp drive assembly and be used for pressing the blood taking needle in order to take a blood.

Further, the linear driving assembly comprises a driving rod, a driving barrel, a button, a lifting spring and a return spring, the button is arranged in the upper end of the fixed barrel, the button and the fixed barrel are arranged in a vertically sliding mode, the driving barrel is arranged in the fixed barrel and located on the lower side of the button, and the driving rod is arranged in the driving barrel;

an annular eleventh positioning bulge is arranged at the lower end inside the driving cylinder, the driving rod comprises a driving head and a guide hollow rod which are integrated, a lifting spring is clamped between the bottom end of the driving head and the eleventh positioning bulge, and the lifting spring is sleeved outside the guide hollow rod and is coaxially arranged with the eleventh positioning bulge; one end of the reset spring is clamped on the inner side of the top wall of the button, and the other end of the reset spring is clamped on the top of the driving head.

Furthermore, a first positioning claw is arranged at the middle position of the top wall of the button downwards, a second positioning claw is arranged at the top of the driving head, the first positioning claw and the second positioning claw are both of a two-petal structure, and two ends of the reset spring are respectively clamped in the first positioning claw and the second positioning claw;

the lower end of the driving cylinder is provided with an upwards extending guide rod, the upper end of the guide rod is conical, the guide hollow rod and the driving head are coaxially arranged, the guide hollow rod is arranged at the lower end of the driving head and vertically extends downwards, a guide groove is formed in the guide hollow rod, and the guide rod extends into the guide groove;

a first guide bulge is arranged on the outer ring of the lower part of the button, an inwards concave first guide groove is arranged on the inner wall of the upper end of the fixed cylinder, and the first guide bulge extends into the first guide groove and is in clearance fit with the first guide groove;

the driving barrel is provided with an avoidance hole, the upper end of the driving barrel is provided with a twelfth positioning bulge extending outwards, the middle part of the outer ring of the driving barrel is provided with a fourth stop bulge, and the fourth stop bulge is arranged corresponding to the first guide groove;

the lower end of the button is provided with a second guide protrusion and a third limiting protrusion which extend downwards, the two sides of the lower end of the third limiting protrusion are symmetrically provided with fourth limiting protrusions which extend in the circumferential direction, the upper end of the driving cylinder is provided with a second guide groove, a third limiting groove, a fourth limiting groove, a vertical groove and a transverse groove, the second guide groove is communicated with the vertical groove, and the second guide protrusion extends into the third limiting groove and is in clearance fit with the third limiting groove; the third limiting bulge is attached to the outer wall of the driving cylinder, the fourth limiting bulge is positioned on the lower side of the twelfth positioning bulge, and the width of the third limiting bulge is smaller than the distance between two adjacent twelfth positioning bulges;

the driving head is provided with a lifting rotary driving surface and a rotary positioning boss; the inside of the button is provided with a driving ribbed plate.

Furthermore, the rotary driving assembly comprises a first rotary cylinder, a second rotary cylinder, an operation protrusion and a torsion spring, the first rotary cylinder is arranged at the bottom end of the driving cylinder and is coaxially and rotatably connected with the driving cylinder, and the second rotary cylinder is arranged at the lower end of the first rotary cylinder; the lower end of the driving cylinder is provided with a positioning conical cylinder, the upper end of the positioning conical cylinder is provided with a first positioning vertical groove, the lower end of the positioning conical cylinder is provided with a positioning vertical block, one end surface of the positioning vertical block is provided with a second positioning vertical groove, the torsion spring is sleeved on the outer ring of the positioning conical cylinder, the upper end of the torsion spring is provided with a first vertical rod, the lower end of the torsion spring is provided with a second vertical rod, the first vertical rod is fixedly clamped in the first positioning vertical groove, and during initial assembly, the second vertical rod is firstly inserted into the second positioning vertical groove before assembly so as to be convenient for positioning assembly;

be equipped with first viewing aperture and second viewing aperture on the solid fixed cylinder, first viewing aperture and second viewing aperture are corresponding with first rotatory section of thick bamboo and second rotatory section of thick bamboo respectively, the protruding fixed mounting of operation is in the rotatory section of thick bamboo of second, just the operation arch runs through the setting of second viewing aperture, the circumference has set gradually the gear digit on the outer wall of first rotatory section of thick bamboo.

Furthermore, the first stopping protrusions are uniformly distributed relative to the axis of the stopping cylinder, a third positioning vertical groove which penetrates through the first stopping protrusions is formed in one of the first stopping protrusions, the third positioning vertical groove corresponds to the first positioning vertical groove, the second vertical rod is further inserted into the third positioning vertical groove, and the first positioning vertical groove, the second positioning vertical groove and the third positioning vertical groove are all of an open structure. The second rotating cylinder realizes the axial positioning through a shoulder structure in the fixed cylinder, the middle part of the first rotating cylinder is provided with a plurality of thirteenth positioning bulges extending downwards, and the thirteenth positioning bulges are arranged in a fit manner with the upper end surface of the second rotating cylinder; the upper end of the first rotary cylinder is provided with a plurality of fourteenth positioning bulges which extend upwards, the outer ring of the driving cylinder is provided with a fourth stopping bulge, and the upper end face of the fourteenth positioning bulge is attached to the lower end face of the fourth stopping bulge.

Furthermore, the multi-needle fixing assembly comprises a fixed needle cylinder and an outer sleeve, the fixed needle cylinder and the outer sleeve are coaxially arranged, and the outer sleeve is sleeved on the outer side of the fixed needle cylinder and is clamped and connected with the fixed needle cylinder; the fixed needle cylinder comprises a fixed column and a ring cylinder, the fixed column and the ring cylinder form a plurality of positioning cavities through partition plates, a plurality of blood taking needles are placed in the positioning cavities, the bottoms of the blood taking needles are provided with a first needle outlet hole and a second needle outlet hole in a right-facing manner, and the first needle outlet hole and the second needle outlet hole are respectively formed in the bottom wall of the fixed needle cylinder and the bottom wall of the outer sleeve; the outer sleeve and the fixed needle cylinder are both made of elastic engineering plastics.

Furthermore, a plurality of grooves are uniformly formed in the outer wall of the ring cylinder to form a quincunx shape, a sixth positioning bulge and a seventh positioning bulge are fixedly arranged in each two adjacent grooves respectively, and the sixth positioning bulge and the seventh positioning bulge tilt outwards along the radial direction of the fixed needle cylinder;

a sixth positioning groove and a seventh positioning groove which are matched and corresponding to the sixth positioning protrusion and the seventh positioning protrusion respectively are arranged on the outer sleeve, the sixth positioning groove is of a through hole structure, and the seventh positioning groove is arranged in a concave manner along the radial direction of the outer sleeve;

and an isolation boss is arranged on the inner wall of the outer sleeve and below the sixth positioning groove, and the ring cylinder is axially limited by the isolation bosses.

Furthermore, a fifth positioning bulge is arranged at the center of the bottom wall of the outer sleeve, a fifth positioning notch matched with the fifth positioning bulge is arranged on the bottom wall of the fixed needle cylinder, and the fifth positioning bulge and the fifth positioning notch are both conical and are in clearance fit;

the sixth positioning bulge is arranged on the upper side of the seventh positioning bulge, the lower end of the sixth positioning bulge is provided with a barb which is tilted upwards, and the seventh positioning bulge is provided with a shoulder fixing surface;

the barb of the sixth positioning bulge extends out of the sixth positioning groove, a height limiting ring is arranged on the groove wall of the seventh positioning groove, and the shoulder fixing surface of the seventh positioning bulge is positioned on the lower side of the height limiting ring;

a plurality of eighth positioning bulges are arranged at the top of the inner wall of the outer sleeve, a plurality of ninth positioning bulges are arranged on the outer wall of the annular cylinder, and the eighth positioning bulges are positioned on the upper sides of the ninth positioning bulges;

and tenth positioning bulges are arranged on two sides of each sixth positioning groove in the vertical direction in a close proximity mode, and the two tenth positioning bulges are symmetrically arranged by taking the sixth positioning grooves as centers.

Furthermore, a stopping cylinder is arranged at the lower end of the positioning conical cylinder, a first stopping claw is arranged on the outer ring of the stopping cylinder, a plurality of first stopping protrusions are arranged at the lower end of the first rotating cylinder, the first stopping claw is clamped on the cavity wall of the upper part of the positioning cavity, the first stopping protrusions are inserted into a groove in the outer ring of the ring cylinder, a second stopping claw is arranged on the second rotating cylinder, and a ratchet and pawl mechanism is formed by the second stopping claw and the protruding positions of the groove on the ring cylinder.

Further, the degree of depth adjustment subassembly is including coaxial last holding ring, drive ring and the lift ring that sets up, the below outer lane of going up the holding ring is equipped with spacing arch, the inner circle upper end of drive ring is equipped with a plurality of gear and adjusts the arch, spacing arch corresponds the setting with the protruding recess that forms of adjacent gear regulation, the lower extreme of drive ring inner circle is equipped with first spiral arch, the lift ring overlaps to be established in the drive ring, the outer lane of lift ring is equipped with the helicla flute, first spiral arch is established in the helicla flute and the two relative motion, the lower extreme of lift ring is equipped with out the pinhole.

Furthermore, the upper end of the upper positioning ring is provided with a concave positioning notch, the inner ring of the upper positioning ring is provided with a first positioning protrusion protruding inwards, the outer wall of the fixed cylinder is provided with a positioning insertion block and a positioning groove, the positioning insertion block is inserted into the positioning notch, and the first positioning protrusion is clamped in the positioning groove, so that the upper positioning ring and the fixed cylinder are fixed.

Furthermore, the diameter of the lower end of the upper positioning ring is smaller than that of the upper end of the upper positioning ring, the lower end of the upper positioning ring extends into the driving ring, and a barb-shaped first positioning boss is arranged at the lower end of the upper positioning ring;

the two sides of the spiral groove are composed of a plurality of second spiral protrusions which are arranged discontinuously, and the second spiral protrusions are arranged in contact with the inner ring of the driving ring in a clearance fit manner;

the outer diameter of the driving ring is less than or equal to the outer diameter of the top end of the upper positioning ring, an arc bulge is arranged at the lower end of the driving ring, and the outer diameter of the arc bulge is larger than that of the upper end of the driving ring;

go up the lower extreme of holding ring and be equipped with second location breach, the upper end of lift ring is equipped with second location arch, second location arch is established in second location breach, and the two slides from top to bottom and sets up.

Furthermore, the blood taking needle comprises a needle head and a protective sleeve, the protective sleeve comprises a driving section and a fixed section which are integrally formed, the needle head penetrates through the fixed section and is fixed in the center of the fixed section, the driving section is located at the upper end of the fixed section, and a lug boss, a third positioning boss and a thin-wall area are arranged on the driving section; the bottom of syringe needle is equipped with the pullover, pullover is soft rubber structure.

Furthermore, be equipped with third location breach on the ring section of thick bamboo, third location breach and the protruding joint that can match of third location on the blood taking needle.

Further, the protective sheath is engineering plastics material.

The utility model has the advantages and positive effects that:

1. the utility model discloses a bull blood sampling pen includes fixed section of thick bamboo, linear drive subassembly, rotary drive subassembly, the fixed subassembly of many needles and degree of depth adjusting part in proper order, and is provided with a plurality of blood taking needles in the fixed subassembly of many needles, and the subassembly matches work in many centres and can realize that same blood sampling pen can carry out the blood sampling to a plurality of different samples and use, reduces the change frequency, saves time, raises the efficiency.

2. The linear driving assembly is used for pressing the blood taking needles for blood taking, and the rotary driving assembly is used for replacing a plurality of blood taking needles, so that one blood taking needle is ensured to be used only once, the blood taking safety is ensured, and the infection of diseases in the blood taking process is avoided; the depth adjusting assembly is used for adjusting the needle outlet depth of the blood taking needle, so that the depth of the blood taking needle penetrating the skin is fixed, and normal use is guaranteed.

3. The utility model discloses a be provided with the actuating lever among the sharp drive assembly, the button, lift spring and reset spring, when using, drive the actuating lever through pressing the button and move down and can press the blood sampling needle and carry out the blood sampling work, after the syringe needle punctures skin, the blood sampling needle is established to its actuating lever bottom card is at lift spring and reset spring's elasticity effect rebound down to withdraw the blood sampling needle, can realize the use and the reseing of blood sampling needle, thereby be convenient for use with the blood sampling needle that the rotary driving subassembly cooperation was changed newly, guarantee safety.

4. The utility model provides a fixed is established with the ring section of thick bamboo card of the fixed subassembly of many needles to first rotatory section of thick bamboo among the rotary drive subassembly, the rotatory section of thick bamboo of second forms ratchet pawl mechanism with the ring section of thick bamboo, the blood taking needle in driving first rotatory section of thick bamboo and ring section of thick bamboo and the ring section of thick bamboo through rotatory second rotatory section of thick bamboo when using rotates, thereby realize the purpose that the blood taking needle of renewal was used, ratchet pawl mechanism is convenient for reset the operation arch simultaneously, and the first dog card of the while driving cylinder that resets establishes the ring section of thick bamboo and can prevent first rotatory section of thick bamboo and ring section of thick bamboo reverse rotation, thereby be convenient for rotate once more the blood taking needle operation of renewal.

5. The utility model provides a degree of depth adjusting device can adjust the bottom surface of bottom lift ring for the position of the fixed subassembly of many needles to can adjust the depth of putting out the needle of blood taking needle, in time adjust, make the depth of putting out the needle of blood taking needle accord with the requirement of blood sampling.

Drawings

FIG. 1 is a schematic view of the overall structure of the multi-head blood collecting pen of the present invention;

FIG. 2 is a schematic view of the split structure of the multi-head blood collecting pen of the present invention;

FIG. 3 is a first schematic structural view of a fixing cylinder in the multi-head blood collecting pen of the present invention;

FIG. 4 is a second schematic structural view of a fixing cylinder in the multi-head blood collecting pen of the present invention;

FIG. 5 is a schematic diagram of the mechanism of the linear driving assembly in the multi-head blood collecting pen of the present invention;

FIG. 6 is a sectional view of the linear driving assembly of the multi-head blood collecting pen of the present invention;

FIG. 7 is a first schematic structural view of a driving barrel in the multi-head blood sampling pen of the present invention;

FIG. 8 is a second schematic structural view of a driving cylinder in the multi-head blood collecting pen of the present invention;

FIG. 9 is a schematic structural view of a button of the multi-headed blood collection pen of the present invention;

FIG. 10 is a schematic structural view of a driving rod of the multi-headed blood collecting pen of the present invention;

FIG. 11 is a schematic structural view of a rotary driving assembly of the multi-headed blood collecting pen of the present invention;

FIG. 12 is a schematic structural view of a first rotary cylinder of the multi-head blood collecting pen of the present invention;

FIG. 13 is a schematic structural view of a second rotary cylinder of the multi-headed blood collecting pen of the present invention;

FIG. 14 is a schematic structural view of a torsion spring in the multi-head blood collecting pen of the present invention;

FIG. 15 is a schematic view of the assembly of the linear driving assembly and the rotary driving assembly of the multi-head blood collecting pen of the present invention;

FIG. 16 is a schematic structural view of a multi-needle fixing assembly of the multi-tip lancet of the present invention;

FIG. 17 is a first schematic structural view of a fixed needle cylinder in the multi-head blood sampling pen of the present invention;

FIG. 18 is a second schematic structural view of the fixed needle cylinder of the multi-tip lancet of the present invention;

FIG. 19 is a first structural schematic view of an outer sleeve of the multi-tip blood collection pen of the present invention;

FIG. 20 is a second schematic structural view of the outer sleeve of the multi-tip blood collection pen of the present invention;

FIG. 21 is a schematic structural view of a blood collection needle in the multi-head blood collection pen of the present invention;

FIG. 22 is a sectional view of the combination of the fixed needle cylinder and the blood collection needle in the multi-head blood collection pen of the present invention;

FIG. 23 is a schematic structural view of a depth adjustment assembly of the multi-headed blood collection pen of the present invention;

FIG. 24 is a cross-sectional view of the depth adjustment assembly of the multi-tip lancet of the present invention;

FIG. 25 is a first schematic structural view of an upper positioning ring in the multi-headed blood collection pen of the present invention;

FIG. 26 is a second schematic structural view of an upper positioning ring in the multi-headed blood collection pen of the present invention;

FIG. 27 is a schematic structural view of a driving ring in the multi-headed lancet of the present invention;

FIG. 28 is a schematic structural view of a lifting ring of the multi-headed blood collection pen of the present invention;

FIG. 29 is an enlarged view of the structure A of FIG. 24;

FIG. 30 is a sectional view of the multi-headed blood collection pen of the present invention;

FIG. 31 is a schematic view of a spacing structure among the driving cylinder, the first rotary cylinder and the second rotary cylinder of the multi-head blood sampling pen of the present invention;

in the figure:

65-a fixed cylinder, 651-a first guide groove, 652-a first observation window, 653-a second observation window, 656-a positioning insert, 657-a positioning groove and 658-a protrusion;

1-blood taking needle, 11-needle, 12-protective sleeve, 121-fixed section, 122-driving section, 1221-ear hanging projection, 1222-second inclined plane, 1223-second horizontal plane, 1224-third positioning projection, 1225-thin wall area, 1226-third inclined plane and 13-sleeve head;

c-a multi-needle fixing component, 21-a fixed needle cylinder, 210-a positioning cavity, 211-a third positioning notch, 212-a sixth positioning protrusion, 2121-a barb, 213-a seventh positioning protrusion, 2131-a shoulder fixing surface, 214-a fifth positioning notch, 215-a fixing column, 216-a ninth positioning protrusion, 217-a ring cylinder, 218-a first needle outlet hole; 22-outer sleeve, 221-sixth positioning groove, 222-fifth positioning protrusion, 223-seventh positioning groove, 224 height-limiting ring, 225-eighth positioning protrusion, 226-isolation boss, 227-tenth positioning protrusion and 228-second needle outlet hole;

d-a depth adjusting component, 51-an upper positioning ring, 511-a first positioning bulge, 512-a first positioning notch, 513-a limiting bulge, 514-a first positioning boss, 515-a second positioning notch, 52-a driving ring, 521-a gear adjusting bulge, 522-a first spiral bulge, 523-an arc bulge, 53-a lifting ring, 531-a second positioning bulge, 532-a spiral groove, 533-a second spiral bulge and 54-a needle outlet hole,

a-a linear driving component, 61-a driving rod, 612-a driving head, 6121-a lifting rotary driving surface, 6122-a rotary positioning boss, 613-a guide idle rod, 6131-an introduction groove, 615-a second positioning claw, 62-a driving barrel, 621-an eleventh positioning bulge, 622-an introduction rod, 623-a position avoiding hole, 624-a second guide groove, 6241-a vertical groove, 6242-a transverse groove, 625-a third limiting groove, 6251-a transverse limiting groove, 626-a twelfth positioning bulge, 6261-a fourth limiting groove, 627-a fourth stopping bulge, 628-a positioning conical barrel, 6281-a first positioning vertical groove, 6282-a second positioning vertical groove, 6283-a positioning vertical block, 629-a stopping cylinder 6291-a first stopping claw and 63-a button, 631-a first positioning pawl, 632-a first guide projection, 633-a second guide projection, 634-a third limiting projection, 6341-a fourth limiting projection, 635-a drive rib, 64-a lift spring, 655-a return spring;

b-a rotary driving component, 66-a torsion spring, 661-a first vertical rod, 662-a second vertical rod, 67-a first rotary cylinder, 671-a thirteenth positioning projection, 672-a first stop projection, 6721-a third positioning vertical groove, 6722-a second positioning vertical block, 673-a fourteenth positioning projection, 68-a second rotary cylinder, 681-a second stop claw, 682-a third positioning vertical block and 69-an operating projection.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

Bull blood sampling pen, including a fixed section of thick bamboo 65, linear drive subassembly a, rotary drive subassembly b, many needles fixed subassembly c and degree of depth regulating assembly d, the bottom and the degree of depth regulating assembly d joint of a fixed section of thick bamboo 65 are fixed, linear drive subassembly a, rotary drive subassembly b and many needles fixed subassembly c all set up the inside at a fixed section of thick bamboo 65, and a fixed section of thick bamboo 65 is visited on linear drive subassembly a's top, rotary drive subassembly b sets up and is used for controlling many needles fixed subassembly c and rotate between linear drive subassembly a and many needles fixed subassembly c, many needles fixed subassembly c is inside to be provided with a plurality of blood taking needles 1, be provided with actuating lever 61 in the linear drive subassembly a and be used for pressing blood taking needle 1 in order to take a blood sample. Wherein a fixed section of thick bamboo 65 is used for carrying out cladding and equipment with other subassemblies, thereby straight line drive assembly a can drive blood taking needle 1 when pressing downwards and wear out and puncture skin and carry out the blood sampling work, then drive blood taking needle 1 and return the normal position when no longer pressing, rotatory drive assembly b can rotate multi-needle fixed subassembly c and blood taking needle 1, and then change new blood taking needle 1 and straight line drive assembly a and just right, change new blood taking needle and use, set up the play needle degree of depth that degree of depth regulating assembly d can adjust blood taking needle 1, in time adjust, make the play needle degree of depth of blood taking needle 1 accord with the requirement of blood sampling.

In the present embodiment, the fixed cylinder 65 is a hollow cylinder, and the fixed cylinder 65 is provided with a first observation port 652 and a second observation port 653, the first observation port 652 is used for observing the gear position on the surface of the first rotary cylinder 67, determining the use number of the blood collection needle 1, and further determining whether to replace the blood collection needle 1 with a new one, the second observation port 653 is convenient for rotating the button 63 to change the position of the blood collection needle 1, and is convenient for replacing the new blood collection needle 1; be provided with location inserted block 656 and positioning groove 657 on the outer wall of a fixed section of thick bamboo 65, be convenient for with last holding ring 51 card establish fixedly, be convenient for install fast and dismantle degree of depth adjusting part d to the convenience is changed subassembly c and blood taking needle 1 are fixed to many needles. The inner wall of the fixed cylinder 65 is provided with a first guide groove 651 and a protrusion 658, and the first guide groove 651 is used for guiding and positioning the button 63, so as to ensure that the button 63 vertically slides.

Referring to fig. 5 and 6, in the present embodiment, the linear driving assembly a includes a driving rod 61, a driving cylinder 62, a push button 63, a lifting spring 64 and a return spring 655, the push button 63 is disposed inside an upper end of the fixed cylinder 65 and slidably disposed up and down, the driving cylinder 62 is disposed inside the fixed cylinder 65 and located at a lower side of the push button 63, and the driving rod 61 is disposed inside the driving cylinder 62; wherein, this straight line drive assembly a is used for pressing the blood taking needle 1 of bottom and then makes the blood taking needle 1 wear out and carry out the blood sampling work, during the in-service use, presses button 63, then button 63 slides down along solid fixed cylinder 65 to compress reset spring 655, and then drive actuating lever 61 and slide down along actuating cylinder 62, then actuating lever 61 suppresses the blood taking needle 1 of bottom and wears out the degree of depth adjustment subassembly d of bottom and then punctures skin and carry out the blood sampling work.

Referring to fig. 6 and 10, an annular eleventh positioning protrusion 621 is disposed at the lower end inside the driving cylinder 62, the driving rod 61 includes an integrated driving head 612 and a guiding hollow rod 613, the lifting spring 64 is clamped between the bottom end of the driving head 612 and the eleventh positioning protrusion 621, and the eleventh positioning protrusion 621 is configured to be matched with the driving head 612 and clamp the lifting spring 64, so as to fix the position of the lifting spring 64; the lifting spring 64 is sleeved on the outer side of the guide hollow rod 613 and is coaxially arranged with the eleventh positioning protrusion 621; one end of the return spring 655 is clamped on the inner side of the top wall of the button 63, the other end of the return spring 655 is clamped on the top of the driving head 612, the lifting spring 64 and the return spring 655 are arranged to be compressed when being pressed for use, then the driving rod 61 moves downwards to press the blood taking needle 1 at the bottom to move, and then the needle of the blood taking needle 1 is clamped by the driving rod 61 to be driven and retracted into the fixed cylinder 65 under the elastic force action of the return spring 655 and the lifting spring 64 after penetrating the skin, so that the pain is reduced.

Referring to fig. 6 and 9, in this embodiment, a first positioning pawl 631 is disposed downward in the middle of the top wall of the button 63, a second positioning pawl 615 is disposed at the top of the driving head 612, the first positioning pawl 631 and the second positioning pawl 615 are both of a two-petal structure, and two ends of the return spring 655 are respectively clamped in the first positioning pawl 631 and the second positioning pawl 615; the first positioning pawl 631 and the second positioning pawl 615 are used to fixedly mount the return spring 655. In addition, because the button 63 is pressed down, the driving rib 635 moves along the lifting and rotating driving surface 6121 of the driving rod 61, so that the driving rod 61 rotates to enable the rotating positioning boss 6122 to be rotated out of the second guide groove 624 and enter the vertical groove 6241 to move down, in the process, both ends of the return spring 655 are clamped in the two-petal structure, therefore, the return spring 655 twists along with the rotation of the driving rod 61 to generate torsional elastic force, and when the driving rod 61 moves back upwards, and when the driving rib 635 is not in contact with the lifting and rotating driving surface 6121, the driving rod 61 is driven to rotate under the torsional elastic force of the return spring 655, so that the rotating positioning boss 6122 is clamped back into the second guide groove 624. Therefore, two ends of the return spring 655 are clamped in the two-petal structure, which is convenient for returning the rotary positioning boss 6122.

Referring to fig. 6, 7 and 8, in this embodiment, the lower end of the driving cylinder 62 is provided with an upward extending guiding rod 622, the upper end of the guiding rod 622 is tapered, the guiding hollow rod 613 is coaxially arranged with the driving head 612, the guiding hollow rod 613 is arranged at the lower end of the driving head 612 and vertically extends downward, an guiding groove 6131 is arranged inside the guiding hollow rod 613, and the guiding rod 622 extends into the guiding groove 6131; the guiding rod 622 is inserted into the guiding groove 6131 of the guiding hollow rod 613 at the bottom of the driving rod 61 and is arranged in the driving cylinder 62 to guide the driving rod 61, so that the driving rod 61 keeps moving linearly when moving downwards, and the axial position of the driving rod is not changed.

Referring to fig. 6 and 9, in this embodiment, a first guide protrusion 632 is disposed on an outer ring of a lower portion of the button 63, a first concave guide groove 651 is disposed on an inner wall of an upper end of the fixed cylinder 65, and the first guide protrusion 632 extends into the first guide groove 651 and is in clearance fit with the first guide groove 651; the first guide protrusion 632 slides up and down in the first guide groove 651, so that the button 63 is prevented from rotating by moving linearly when the button 63 is pressed up and down.

As shown in fig. 7, the driving cylinder 62 is provided with an avoiding hole 623, the upper end of the driving cylinder 62 is provided with a twelfth positioning protrusion 626 extending outwards, and the twelfth positioning protrusion 626 is arranged to abut against a fourth limiting protrusion 6341 on the button 63, so as to prevent the button 63 from being separated from the driving cylinder 62, and ensure that the button 63 and the driving cylinder 62 are always connected in a clamped manner; a fourth stop boss 627 is arranged in the middle of the outer ring of the driving barrel 62, and the fourth stop boss 627 corresponds to the first guide groove 651; the fourth stop protrusion 627 is engaged with the first guide groove 651, so as to fix the axial positions of the driving cylinder 62 and the fixed cylinder 65, and prevent the driving cylinder 62 from rotating in the fixed cylinder 65.

The outside horizontal spacing groove 62514 that still is equipped with of drive tube 62, the setting of the inside arch 658 correspondence of horizontal spacing groove 6251 and fixed cylinder 65, during the equipment, protruding 658 produces elastic deformation, and then protruding 658 card is in horizontal spacing groove 651, realizes the installation of drive tube 62 and fixed cylinder 65.

Referring to fig. 9 and 7, the lower end of the button 63 is provided with a second guide protrusion 633 and a third limiting protrusion 634 extending downward, both sides of the lower end of the third limiting protrusion 634 are symmetrically provided with fourth limiting protrusions 6341 extending in the circumferential direction, the driving barrel 62 is provided with a second guide groove 624, a third limiting groove 625, a fourth limiting groove 6261, a vertical groove 6241 and a lateral groove 6242, the lateral groove 6242 is communicated with the vertical groove 6241, wherein the second guide protrusion 633 is inserted into the third limiting groove 625 and is in clearance fit with the third limiting groove 625, the third limiting protrusion 634 is attached to the outer wall of the driving barrel 62, the fourth limiting protrusion 6341 is located at the lower side of the twelfth locating protrusion 626, and the width of the third limiting protrusion 634 is smaller than the distance between two adjacent twelfth locating protrusions 626. The third limiting groove 625 is used to limit the downward moving depth of the second guide protrusion 633, and when the button 63 is pressed downward, the second guide protrusion 633 moves downward until the card is inserted into the third limiting groove 625, and then stops moving.

Referring to fig. 10 and 9, the driving head 612 is provided with a lifting rotation driving surface 6121 and a rotation positioning boss 6122; a driving rib 635 is arranged inside the button 63; the lifting and rotating driving surface 6121 on the driving rod 61 is a wedge-shaped surface, and when the driving rib plate 635 moves downwards, the lifting and rotating driving surface 6121 is pressed, so that the driving head 612 rotates, the rotating and positioning boss 6122 rotates out of the transverse groove 6242, enters the vertical groove 6241 and moves downwards along the vertical groove 6241, and the driving rod 61 moves downwards vertically along a straight line. Furthermore, in the initial state, the rotary positioning boss 6122 is disposed in the transverse groove 6242 of the driving cylinder 62, the driving rod 61 does not rotate and move axially, during the descending process, when the lower end of the driving rib 635 contacts the lifting rotary driving surface 6121 of the driving rod 61, the driving rod 61 starts to rotate, the rotary positioning boss 6122 rotates out of the corresponding transverse groove 6242, then slides downwards in the vertical groove 6241 of the driving cylinder 62, during the resetting process, the lifting spring 64 and the return spring 655 enable the driving rod 61 to retreat axially, when the rotary positioning boss 6122 of the driving rod 61 reaches the top of the driving cylinder 62, the driving rod 61 rotates under the torque force of the return spring 655, the rotary positioning boss 6122 rotates into the transverse groove 6242 of the driving cylinder 62, and returns to the initial position and fixes the driving rod 61.

As shown in fig. 11: in the present embodiment, the rotation driving assembly includes a first rotation cylinder 67, a second rotation cylinder 68, an operation protrusion 69 and a torsion spring 66, referring to fig. 15, the first rotation cylinder 67 is disposed at the bottom end of the driving cylinder 62 and is coaxially and rotatably connected with the driving cylinder 62, and the second rotation cylinder 68 is disposed at the lower end of the first rotation cylinder 67; as shown in fig. 7 and 8, a positioning conical cylinder 628 is arranged at the lower end of the driving cylinder 62, a first positioning vertical groove 6281 is arranged at the upper end of the positioning conical cylinder 628, a positioning vertical block 6283 is arranged at the lower end of the positioning conical cylinder 628, and a second positioning vertical groove 6282 is arranged on one end surface of the positioning vertical block 6283; the torsion spring 66 is sleeved on the outer ring of the positioning conical cylinder 628, a first vertical rod 661 is arranged at the upper end of the torsion spring 66, a second vertical rod 662 is arranged at the lower end of the torsion spring 66, the first vertical rod 661 is fixedly clamped in the first positioning vertical groove 6281, and the second vertical rod 662 is clamped in the second positioning vertical groove 6282; in assembling, the first vertical rod 661 of the torsion spring 66 is inserted in the first positioning vertical slot 6281, then the second vertical rod 662 is inserted in the second positioning vertical slot 6282, then the first rotary cylinder 67 is sleeved outside the drive cylinder 62, and then the second vertical rod 662 is inserted in the third positioning vertical slot 6721. When the second rotary cylinder 68 is rotated, the torsion spring 66 is in a twisted state, and when a gear is rotated, the second stopping claw 681 and the protruding position of the groove on the ring cylinder 217 form a ratchet and pawl mechanism, so that the second rotary cylinder 68 is abutted against the ring cylinder 217, and the stability of the second rotary cylinder 68 and the ring cylinder 217 is further maintained, and the second rotary cylinder 68 does not rotate reversely.

Wherein, be equipped with first viewing aperture 652 and second viewing aperture 653 on the fixed cylinder 65, first viewing aperture 652 and second viewing aperture 653 correspond with first rotatory section of thick bamboo 67 and second rotatory section of thick bamboo 68 respectively, and operation arch 69 is fixed mounting in second rotatory section of thick bamboo 68, and operation arch 69 runs through second viewing aperture 653 setting, and the circumference has set gradually the gear number on the outer wall of first rotatory section of thick bamboo 67. Which blood taking needle 1 is used is convenient to observe, and the use progress is convenient to judge.

Referring to fig. 12 and 13, in addition, the first stopping protrusions 672 are uniformly arranged relative to the axis of the stopping cylinder 629, one of the first stopping protrusions 672 is provided with a third positioning vertical groove 6721 which penetrates through the first stopping protrusion 672, the outer wall of the first stopping protrusion 672 is provided with a second positioning vertical block 6722, the third positioning vertical groove 6721 is arranged corresponding to the first positioning vertical groove 6281, the second vertical rod 662 is inserted into the third positioning vertical groove 6721, and both the first positioning vertical groove 6281 and the second positioning vertical groove 6282 are open structures; in assembling, the first vertical rod 661 of the torsion spring 66 is inserted in the first positioning vertical slot 6281, then the second vertical rod 662 is inserted in the second positioning vertical slot 6282, then the first rotary cylinder 67 is sleeved outside the drive cylinder 62, and then the second vertical rod 662 is inserted in the third positioning vertical slot 6721. The second rotating cylinder 68 is axially positioned through a shoulder structure inside the fixed cylinder 65, a plurality of thirteenth positioning protrusions 671 extending downwards are arranged in the middle of the first rotating cylinder 67, and the thirteenth positioning protrusions 671 are fitted with the upper end face of the second rotating cylinder 68; the upper end of the first rotary drum 67 is provided with a plurality of fourteenth positioning protrusions 673 extending upwards, the outer ring of the driving drum 62 is provided with a fourth stop protrusion 627, and the upper end surface of the fourteenth positioning protrusions 673 is attached to the lower end surface of the fourth stop protrusion 627.

As shown in fig. 16 and 22, in the present embodiment, the multi-needle fixing assembly c includes a fixed needle cylinder 21 and an outer sleeve 22, the fixed needle cylinder 21 and the outer sleeve 22 are coaxially disposed, and the outer sleeve 22 is sleeved on the outer side of the fixed needle cylinder 21 and is connected to the fixed needle cylinder 21 in a snap fit manner; the fixed needle cylinder 21 comprises a fixed column 215 and a ring cylinder 217, the fixed column 215 and the ring cylinder 217 form a plurality of positioning cavities 210 through partition plates, a plurality of blood collection needles 1 are placed in the plurality of positioning cavities 210, the bottoms of the blood collection needles 1 are provided with a first needle outlet hole 218 and a second needle outlet hole 228 in a right-facing mode, and the first needle outlet hole 218 and the second needle outlet hole 228 are respectively formed in the bottom wall of the fixed needle cylinder 21 and the bottom wall of the outer sleeve 22; the outer sleeve 22 and the fixed needle cylinder 21 are both made of elastic engineering plastic. The multi-needle fixing component c is used for fixedly mounting a plurality of groups of blood taking needles 1 and matching with the rotary driving component b to rotate the blood taking needles 1, and further the purpose of replacing new blood taking needles 1 is achieved.

As shown in fig. 17 and 18, in the present embodiment, the outer wall of the ring cylinder 217 is uniformly provided with a plurality of grooves to form a quincunx shape, each two adjacent grooves are respectively and fixedly provided with a sixth positioning protrusion 212 and a seventh positioning protrusion 213, and the sixth positioning protrusion 212 and the seventh positioning protrusion 213 are tilted outward along the radial direction of the fixed needle cylinder 21; as shown in fig. 19 and 20, the outer sleeve 22 is provided with a sixth positioning groove 221 and a seventh positioning groove 223 respectively matched and corresponding to the sixth positioning protrusion 212 and the seventh positioning protrusion 213, the sixth positioning groove 221 is a through hole structure, and the seventh positioning groove 223 is concavely arranged along the radial direction of the outer sleeve 22; the sixth positioning protrusion 212 is disposed on the upper side of the seventh positioning protrusion 213, the lower end of the sixth positioning protrusion 212 is provided with an upward raised barb 2121, and the seventh positioning protrusion 213 is provided with a shoulder fixing surface 2131; the barb 2121 of the sixth positioning protrusion 212 protrudes out of the sixth positioning groove 221, the height-limiting ring 224 is disposed on the groove wall of the seventh positioning groove 223, and the shoulder fixing surface of the seventh positioning protrusion 213 is located at the lower side of the height-limiting ring 224. The barb 2121 protrudes out of the sixth positioning groove 221, and is configured to limit the upper limit position of the fixed needle cylinder 21, and the height limiting ring 224 is configured to abut against the shoulder fixing surface 2131 of the seventh positioning protrusion 213, so as to fix the lower limit position of the fixed needle cylinder 21. When the fixed barrel 21 is assembled with the outer sleeve 22, the barbs 2121 project radially outwardly of the collar 217. When the blood taking needle 1 is completely taken out after being used up, the sixth positioning protrusion 212 is contracted, at this time, the barb 2121 is clamped on the upper end surface of the sixth positioning groove 221, and meanwhile, the shoulder fixing surface 2131 is in abutting fit with the limiting ring 224, so that the axial positioning is realized, the blood taking needle 1 which is taken out is prevented from being reused, and the reuse is avoided.

As shown in fig. 19 and 20, the inner wall of the outer sleeve 22 is provided with a spacing boss 226, the spacing boss 226 is disposed below the sixth positioning groove 221, and the ring cylinder 217 is axially restrained by the plurality of spacing bosses 226. The bottom wall of the outer sleeve 22 is provided with a fifth positioning protrusion 222 at the center, the bottom wall of the fixed syringe 21 is provided with a fifth positioning notch 214 matched with the fifth positioning protrusion 222, and the fifth positioning protrusion 222 and the fifth positioning notch 214 are both conical and are in clearance fit. When the assembly is performed, the fifth positioning protrusion 222 is inserted into the fifth positioning notch 214, which can play a role in guiding and positioning, and ensure the quick matching between the outer sleeve 22 and the fixed needle cylinder 21, thereby improving the precision and efficiency of the assembly. A plurality of eighth positioning protrusions 225 are arranged on the top of the inner wall of the outer sleeve 22, a plurality of ninth positioning protrusions 216 are arranged on the outer wall of the ring cylinder 217, and the eighth positioning protrusions 225 are positioned on the upper sides of the ninth positioning protrusions 216. When combined, the eighth locating projection 225 thereof is located on the upper side of the ninth locating projection 216, and the positioning of the outer sleeve 22 and the fixed cylinder 21 in the axial direction is achieved by utilizing the principle of elasticity. Tenth positioning protrusions 227 are closely arranged on two sides of each sixth positioning groove 221 in the vertical direction, and the two tenth positioning protrusions 227 are symmetrically arranged with the sixth positioning groove 221 as the center. The tenth positioning protrusion 227 is provided to increase the strength of the outer sleeve 22, thereby preventing the strength of the outer sleeve 22 from being reduced at the sixth positioning groove 221, and to guide and position the lancet assembly when the lancet assembly is mounted, thereby improving the assembly accuracy.

In addition, in this embodiment, a first stopping claw 6291 is provided on an outer ring of the stopping cylinder 629, a plurality of first stopping protrusions 672 are provided at a lower end of the first rotating cylinder 67, the first stopping claw 6291 is clamped on a cavity wall at an upper part of the positioning cavity 210, the first stopping protrusions 672 are inserted into a groove on an outer ring of the ring cylinder 217 to clamp and fix the first rotating cylinder 67 and the ring cylinder 217, the first stopping claw 6291 is clamped on a cavity wall at an upper part of the positioning cavity 210, that is, a claw end of the first stopping claw 6291 is used for limiting the groove inside the ring cylinder 217, so that the rotated multi-needle fixing assembly c is prevented from reversely rotating; the second rotating cylinder 68 is provided with a third positioning vertical block 682 and a plurality of second stopping claws 681 which are uniformly distributed, the second stopping claws 681 and the convex positions forming the groove on the ring cylinder 217 form a ratchet and pawl mechanism, and the inner wall of the third positioning vertical block 682 is attached to the outer wall of a thirteenth positioning bulge 671. The ratchet and pawl mechanism can clamp the second rotary cylinder 68 and the ring cylinder 217, so that when the operation protrusion 69 is rotated, the second rotary cylinder 68 drives the first rotary cylinder 67 and the ring cylinder 217 to rotate, a new blood taking needle 1 is arranged opposite to the needle outlet 54, the operation protrusion 69 is rotated back to the original position in the reverse direction, and the ring cylinder 217 and the blood taking needle 1 are not rotated because the ratchet and pawl mechanism enables the second rotary cylinder 68 to rotate back in the reverse direction and the first stopping claw 6291 clamps the ring cylinder 217, thereby facilitating the next rotation operation; in addition, with the continuous rotation of the first rotary cylinder 67 and the ring cylinder 217, after the blood collection needle 1 is completely used, the second positioning vertical block 6722 of the first rotary cylinder 67 is clamped with the third positioning vertical block 682 of the second rotary cylinder 68, and meanwhile, the top of the second positioning vertical block 6722 of the first rotary cylinder 67 is clamped with the positioning vertical block 6283 of the driving cylinder 62, so that the driving cylinder 62, the first rotary cylinder 67 and the second rotary cylinder 68 are all clamped, and the blood collection pen cannot rotate any more, and the limiting structure schematic diagram is shown in fig. 31; need replace blood taking needle 1 this moment promptly, and this cooperation sets up and can also prevent that blood taking needle 1 from by used repeatedly, guarantees safety.

As shown in fig. 23-28, in the present embodiment, the depth adjustment assembly includes an upper positioning ring 51, a driving ring 52, and a lifting ring 53 coaxially disposed, a limiting protrusion 513 is disposed on an outer ring below the upper positioning ring 51, a plurality of gear adjusting protrusions 521 are disposed on an upper end of an inner ring of the driving ring 52, the limiting protrusion 513 is disposed corresponding to the gear adjusting protrusion 521, a first spiral protrusion 522 is disposed on a lower end of the inner ring of the driving ring 52, the lifting ring 53 is sleeved in the driving ring 52, a spiral groove 532 is disposed on an outer ring of the lifting ring 53, the first spiral protrusion 522 is disposed in the spiral groove 532 and moves relative to the two, and a needle outlet 54 is disposed at a lower end of the lifting ring 53.

As shown in fig. 25 and 26, the upper end of the upper positioning ring 51 is provided with a concave positioning notch 512, the inner ring of the upper positioning ring 51 is provided with a first positioning protrusion 511 protruding inwards, the positioning insert 656 on the fixed cylinder 65 is inserted into the positioning notch 512, and the first positioning protrusion 511 is clamped in the positioning groove 657 on the fixed cylinder 65, so that the upper positioning ring 51 and the fixed cylinder 65 are fixed.

The upper positioning ring 51, the driving ring 52 and the lifting ring 53 are all made of engineering plastics, so that the parts can be conveniently matched and clamped, the matching structure and the assembling process are simplified, and the cost is reduced.

The diameter of the lower end of the upper positioning ring 51 is smaller than that of the upper end thereof, the lower end of the upper positioning ring 51 extends into the driving ring 52, and the lower end of the upper positioning ring 51 is provided with a barb-shaped first positioning boss 514; in the actual installation, because adopt engineering plastics, have certain elasticity, go up holding ring 51 and go deep into the upper end of driving ring 52 after locking, form the cell body between the protruding 521 is adjusted to adjacent gear, spacing arch 513 card is inside above-mentioned cell body this moment, and first location boss 514 contacts with the stair structure that the protruding 521 bottom of gear was adjusted to the gear simultaneously, guarantees that holding ring 51 and driving ring 52 are fixed a position in the cooperation of axial direction, simple structure, reliable and stable.

The two sides of the spiral groove 532 are composed of a plurality of second spiral protrusions 533 which are arranged discontinuously, and the second spiral protrusions 533 are arranged in contact with the inner ring of the driving ring 52 and in clearance fit with the inner ring of the driving ring 52, so that the driving ring 52 is prevented from shaking, and the stability is improved; the outer diameter of the driving ring 52 is less than or equal to the outer diameter of the top end of the upper positioning ring 51, the lower end of the driving ring 52 is provided with an arc protrusion 523, and the outer diameter of the arc protrusion 523 is greater than that of the upper end of the driving ring 52; firstly, the appearance is attractive, secondly, an operator is prevented from being scratched, the safety is improved, and thirdly, the pull-out is convenient; first spiral protrusion 522 is the segmentation setting, and second spiral protrusion 533 is also the segmentation setting, makes things convenient for the two to adorn the card and assemble, because the two all adopts the engineering plastics material, in the time of the sectional type installation, the joint cooperation back spiral setting can, after the assembly is accomplished like this, is difficult to dismantle, stable in structure, only can dismantle after destroying, long service life.

The lower end of the upper positioning ring 51 is provided with a second positioning notch 515, the upper end of the lifting ring 53 is provided with a second positioning protrusion 531, the second positioning protrusion 531 is arranged in the second positioning notch 515, and the two are arranged in a vertical sliding manner. The relative rotation between the upper positioning ring 51 and the lifting ring 53 is prevented, when the driving ring 52 is rotated, the lifting ring 53 moves in the axial direction under the action of the spiral groove 532, and the second positioning protrusion 531 moves up and down in the second positioning notch 515, which is equivalent to converting the rotation of the first spiral protrusion 522 in the spiral groove 532 into the up-and-down linear motion of the lifting ring 53; meanwhile, the two ends of the spiral groove 532 are not communicated but sealed, so that the up-and-down movement distance of the lifting ring 53 is limited, and the rotation angle of the lifting ring 53 is limited.

As shown in fig. 21, the lancet 1 includes a needle 11 and a protective sheath 12, the protective sheath 12 includes a driving section 122 and a fixing section 121 which are integrally formed, the needle 11 penetrates through the fixing section 121 and is fixed at the center of the fixing section 121, the driving section 122 is located at the upper end of the fixing section 121, and a tab protrusion 1221, a third positioning protrusion 1224 and a thin-walled region 1225 are arranged on the driving section 122; the bottom end of the needle 11 is provided with a sleeve head 13, and the sleeve head 13 is of a soft rubber structure.

The thin-wall area 1225 is positioned at the upper end of the fixing section 121 and is arranged inwards outwards; the hanging lug boss 1221 is provided with a second inclined surface 1222 and a second horizontal surface 1223; the lower end of the driving rod 61 is provided with a fourth positioning bulge, and the fourth positioning bulge is provided with a first inclined plane and a first horizontal plane.

In this embodiment, a third positioning notch 211 is formed on the ring cylinder 217, and the third positioning notch 211 and the third positioning protrusion 1224 on the blood collection needle 1 can be in matching clamping connection. Initial state, third location is protruding 1224 and is arranged in third location breach 211, when actuating lever 61 downstream, fourth location is protruding to be contactless with hangers arch 1221 this moment, protective sheath 12 takes place deformation in thin wall region 1225, protective sheath 12 is crooked to the axis direction, realize stretching out of syringe needle 11, when actuating lever 61 upward movement, because the deformation of thin wall region 1225, make first horizontal plane and second horizontal plane contact, thereby fourth location is protruding to be connected with hangers arch 1221 joint, and then drive protective sheath 12 upward movement, realize the withdrawal of syringe needle 11.

Further, the protective sleeve 12 is made of engineering plastic.

The utility model discloses a blood sampling pen's specific use as follows:

1. when the blood sampling pen is required to be used for blood sampling: reference may be made to figure 30 of the drawings,

the straight line driving component a can be directly used for realizing the normal blood collection of the blood collection needle 1 extending out of the bottom of the blood collection pen.

Firstly, when the button 63 is pressed by a human hand, the button 63 moves downwards in its entirety, at this time, the driving rib 635 inside the button 63 moves along the lifting and rotating driving surface 6121 of the driving rod 61, so that the driving rod 61 rotates to make the rotating and positioning boss 6122 unscrew from the transverse groove 6242 and enter the vertical groove 6241, due to the pressure of the return spring 655, the driving rod 61 is launched downwards immediately, that is, the rotating and positioning boss 6122 moves vertically along the vertical groove 6241, then the driving rod 61 gradually contacts with the driving section 122 of one of the blood collection needles 1 at the bottom to suppress the downward movement of the blood collection needle 1, at this time, the third positioning boss 1224 in the blood collection needle 1 slides down from the third positioning notch 211, at this time, the third positioning boss 1224 slides downwards along the inner wall of the ring cylinder 217, the driving section 122 of the blood collection needle 1 bends towards the center of the ring cylinder 217 along the thin-wall area 1225, and then the blood collection needle 1 moves downwards under the driving of the driving rod 61, the skin can be punctured to take blood through the first needle outlet hole 218, the second needle outlet hole 228 and the needle outlet hole 54 in sequence, and in the process, the lifting spring 64 and the return spring 655 are compressed to have elastic force.

Secondly, after the lancet 1 punctures the skin, under the elastic force of the lifting spring 64 and the return spring 655, the driving rod 61 moves upwards, so that the driving section 122 of the lancet 1 is in a bent state, and along with the upward movement of the driving rod 61, the fourth positioning bulge at the bottom of the driving rod 61 is clamped with the ear hanging bulge 1221 of the lancet 1, so as to drive the lancet 1 to move upwards at the same time, the lancet 1 is retracted until the third positioning bulge 1224 of the lancet 1 reaches the third positioning notch 211 and is clamped into the third positioning notch 211, at this time, the driving section 122 of the lancet 1 returns to a vertical state, and then the lancet 1 is fixed in the positioning cavity 210 of the multi-needle fixing assembly c again, and the driving rod 61 continues to move upwards until the lifting spring 64 and the return spring 655 are in a relatively balanced state, and when the button 63 is no longer pressed, the driving rod 61 continues to move upwards, until the rotational positioning projection 6112 of the driving rod 61 snaps into the transverse slot 6242 again, i.e., returns to the original position.

2. When a new lancet 1 needs to be changed for use:

each lancet 1 can be used only once, and after one of the lancets 1 is used and returns to its original position, the rotary driving assembly b needs to be operated to rotate the multi-needle positioning assembly c and the lancet 1, so that a new unused lancet 1 is arranged corresponding to the needle outlet 54 and the driving rod 61. The specific operation is as follows:

firstly, the operation protrusion 69 is manually rotated, the operation protrusion 69 drives the second rotary cylinder 68 to rotate, the second stopping claw 681 is clamped with the groove of the ring cylinder 217, so that the ring cylinder 217 and the first rotary cylinder 67 are driven to rotate, when the operation protrusion 69 reaches the other end of the second observation window, the positioning of a new blood taking needle 1 and the needle outlet 54 is completed, and the first stopping claw 6291 on the driving cylinder 62 is clamped and fixed with the groove of the ring cylinder 217, so that the ring cylinder 217 is prevented from reversely rotating;

secondly, the operation protrusion 69 is rotated in a manual direction so that the operation protrusion 69 returns to an initial end, at this time, the second rotary cylinder 68 returns to a home position, and the ring cylinder 217 cannot rotate under the fixing action of the first stopping claw 6291, so that the problem of reuse of the blood collection needle 1 can be avoided, and safety is ensured.

3. When all the lancets 1 are used, the steps of replacing a new lancet 1 and the multi-needle fixing member c are as follows:

after the blood taking needle 1 is completely used, the driving cylinder 62, the first rotating cylinder 67 and the second rotating cylinder 68 are mutually clamped at the moment so that the blood taking pen cannot rotate, the clamping state of the three is shown in fig. 31, in addition, the gear number on the first rotating cylinder 67 can be observed through the first observation window 652 to judge the use condition of the blood taking needle 1, at the moment, the blood taking needle 1 needs to be replaced, and the replacement operation is as follows:

firstly, pulling out a depth adjusting component d;

secondly, the multi-needle fixing component c with a plurality of blood taking needles 1 is pulled out, at the moment, the torsion spring 66 rotates for a circle until the torsion spring is abutted and fixed with one end of the positioning vertical block far away from the second positioning vertical groove 6282, and at the moment, the torsion spring 66 is in an extrusion state to be installed;

thirdly, the multi-needle fixing assembly c with a new blood collection needle 1 is installed, and the first stopping protrusions 672 on the first rotary cylinder 67 are sequentially inserted into the grooves of different ring cylinders 217, and then are adjusted to a proper position to complete the replacement;

and then, the depth adjusting assembly d is clamped and fixed with the fixed cylinder 65 again, and the replacement is finished, so that the device can be used continuously.

4. The depth adjusting component d is arranged for adjusting the needle outlet depth of the blood sampling 1 needle:

the height of the lifting ring 53 can be changed by rotating the lifting ring 53, so that the height of the blood taking needle 1 penetrating out of the needle outlet hole 54 is adjusted, the first blood taking needle 1 is pressed to observe the normal needle outlet height, if the needle outlet height is too long, the lifting ring 53 needs to be lowered, and if the needle outlet height is too short, the lifting ring 53 needs to be raised.

The above detailed description of the embodiments of the present invention is only for the preferred embodiments of the present invention, and the present invention should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims (9)

1. The bull blood sampling pen, its characterized in that: comprises a fixed cylinder (65), a linear driving component (a), a rotary driving component (b), a multi-needle fixing component (c) and a depth adjusting component (d), the bottom of the fixed cylinder (65) is clamped and fixed with the depth adjusting component (d), the linear driving component (a), the rotary driving component (b) and the multi-needle fixing component (c) are all arranged in the fixed cylinder (65), the top end of the linear driving component (a) extends out of the fixed cylinder (65), the rotary driving component (b) is arranged between the linear driving component (a) and the multi-needle fixing component (c) and is used for controlling the multi-needle fixing component (c) to rotate, a plurality of blood taking needles (1) are arranged in the multi-needle fixing component (c), a driving rod (61) is arranged in the linear driving assembly and used for pressing the blood taking needle (1) to take blood; the blood taking needle (1) comprises a needle head (11) and a protective sleeve (12), the protective sleeve (12) comprises a driving section (122) and a fixing section (121) which are integrally formed, the needle head (11) penetrates through the fixing section (121) and is fixed in the center of the fixing section (121), the driving section (122) is located at the upper end of the fixing section (121), and a lug boss (1221), a third positioning boss (1224) and a thin-wall area (1225) are arranged on the driving section (122); the bottom of syringe needle (11) is equipped with pullover (13), pullover (13) are soft rubber structure.

2. The multi-headed lancet according to claim 1, wherein: the linear driving assembly (a) comprises a driving rod (61), a driving barrel (62), a button (63), a lifting spring (64) and a return spring (655), the button (63) is arranged in the upper end of the fixed barrel (65) and is arranged in a vertically sliding mode, the driving barrel (62) is arranged in the fixed barrel (65) and is located on the lower side of the button (63), and the driving rod (61) is arranged in the driving barrel (62);

an annular eleventh positioning protrusion (621) is arranged at the lower end inside the driving cylinder (62), the driving rod (61) comprises a driving head (612) and a guide idle rod (613) which are integrated, a lifting spring (64) is clamped between the bottom end of the driving head (612) and the eleventh positioning protrusion (621), and the lifting spring (64) is sleeved on the outer side of the guide idle rod (613) and is coaxially arranged with the eleventh positioning protrusion (621); one end of the return spring (655) is clamped on the inner side of the top wall of the button (63), and the other end of the return spring is clamped on the top of the driving head (612).

3. The multi-headed lancet according to claim 2, wherein: the rotary driving assembly (b) comprises a first rotary cylinder (67), a second rotary cylinder (68), an operation protrusion (69) and a torsion spring (66), the first rotary cylinder (67) is arranged at the bottom end of the driving cylinder (62) and is coaxially and rotatably connected with the driving cylinder (62), and the second rotary cylinder (68) is arranged at the lower end of the first rotary cylinder (67); the lower end of the driving cylinder (62) is provided with a positioning conical cylinder (628), the upper end of the positioning conical cylinder (628) is provided with a first positioning vertical groove (6281), the lower end of the positioning conical cylinder (628) is provided with a positioning vertical block, one end face of the positioning vertical block is provided with a second positioning vertical groove (6282), the torsion spring (66) is sleeved on the outer ring of the positioning conical cylinder (628), the upper end of the torsion spring (66) is provided with a first vertical rod (661), the lower end of the torsion spring (66) is provided with a second vertical rod (662), the first vertical rod (661) is fixedly clamped in the first positioning vertical groove (6281), and during initial assembly, the second vertical rod (662) is clamped in the second positioning vertical groove (6282) so as to facilitate assembly;

be equipped with first viewing aperture (652) and second viewing aperture (653) on fixed section of thick bamboo (65), first viewing aperture (652) and second viewing aperture (653) are corresponding with first rotatory section of thick bamboo (67) and second rotatory section of thick bamboo (68) respectively, operation arch (69) fixed mounting is in the rotatory section of thick bamboo of second (68), just operation arch (69) run through second viewing aperture (653) and set up, the circumference has set gradually the gear number on the outer wall of first rotatory section of thick bamboo (67).

4. The multi-headed lancet according to claim 3, wherein: the multi-needle fixing assembly (c) comprises a fixing needle cylinder (21) and an outer sleeve (22), the fixing needle cylinder (21) and the outer sleeve (22) are coaxially arranged, and the outer sleeve (22) is sleeved on the outer side of the fixing needle cylinder (21) and is clamped and connected with the fixing needle cylinder (21); the fixed needle cylinder (21) comprises a fixed column (215) and a ring cylinder (217), the fixed column (215) and the ring cylinder (217) form a plurality of positioning cavities (210) through partition plates, a plurality of blood collection needles (1) are placed in the positioning cavities (210), the bottoms of the blood collection needles (1) are provided with a first needle outlet hole (218) and a second needle outlet hole (228) in a right way, and the first needle outlet hole (218) and the second needle outlet hole (228) are respectively formed in the bottom wall of the fixed needle cylinder (21) and the bottom wall of the outer sleeve (22); the outer sleeve (22) and the fixed needle cylinder (21) are both made of elastic engineering plastics.

5. The multi-headed lancet according to claim 4, wherein: a plurality of grooves are uniformly formed in the outer wall of the ring cylinder (217) to form a quincunx shape, a sixth positioning bulge (212) and a seventh positioning bulge (213) are fixedly arranged in each two adjacent grooves respectively, and the sixth positioning bulge (212) and the seventh positioning bulge (213) are tilted outwards along the radial direction of the fixed needle cylinder (21);

a sixth positioning groove (221) and a seventh positioning groove (223) which are matched and corresponding to the sixth positioning protrusion (212) and the seventh positioning protrusion (213) respectively are formed in the outer sleeve (22), the sixth positioning groove (221) is of a through hole structure, and the seventh positioning groove (223) is arranged in a concave manner in the radial direction of the outer sleeve (22);

an isolation boss (226) is arranged on the inner wall of the outer sleeve (22), the isolation boss (226) is arranged below the sixth positioning groove (221), and the ring cylinder (217) is axially limited through the isolation bosses (226).

6. The multi-headed lancet according to claim 5, wherein: the lower extreme of location toper section of thick bamboo (628) is equipped with locking cylinder (629), the outer lane of locking cylinder (629) is equipped with first dog (6291), the lower extreme of first rotatory section of thick bamboo (67) is equipped with a plurality of first locking protrusion (672), first dog (6291) card is established on the chamber wall of location cavity (210) upper portion position, first locking protrusion (672) are inserted and are established in the recess of ring section of thick bamboo (217) outer lane, be equipped with second dog (681) on second rotatory section of thick bamboo (68), second dog (681) forms ratchet pawl mechanism with the protruding position that constitutes recess on ring section of thick bamboo (217).

7. The multi-headed lancet according to claim 1, wherein: the degree of depth adjustment subassembly is including last holding ring (51), drive ring (52) and lift ring (53) of coaxial setting, the below outer lane of going up holding ring (51) is equipped with spacing arch (513), the inner circle upper end of drive ring (52) is equipped with a plurality of gear and adjusts protruding (521), spacing arch (513) correspond the setting with the recess that protruding (521) formed is adjusted to adjacent gear, the lower extreme of drive ring (52) inner circle is equipped with first spiral arch (522), lift ring (53) cover is established in drive ring (52), the outer lane of lift ring (53) is equipped with helicla flute (532), establish in helicla flute (532) and the two relative motion first spiral arch (522), the lower extreme of lift ring (53) is equipped with out pinhole (54).

8. The multi-headed lancet according to claim 7, wherein: the upper end of the upper positioning ring (51) is provided with a concave positioning notch (512), the inner ring of the upper positioning ring (51) is provided with a first positioning protrusion (511) protruding inwards, the outer wall of the fixed cylinder (65) is provided with a positioning insertion block (656) and a positioning groove (657), the positioning insertion block (656) is inserted into the positioning notch (512), and the first positioning protrusion (511) is clamped in the positioning groove (657), so that the upper positioning ring (51) is fixed with the fixed cylinder (65).

9. The multi-headed lancet according to claim 4, wherein: a third positioning notch (211) is formed in the ring cylinder (217), and the third positioning notch (211) and a third positioning bulge (1224) on the blood taking needle (1) can be clamped in a matched mode.

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