CN215191593U

CN215191593U - Automatic needle-changing type multi-needle blood sampling pen

Info

Publication number: CN215191593U
Application number: CN202120120554.0U
Authority: CN
Inventors: 白书然
Original assignee: Yisheng Technology Tianjin Co ltd
Current assignee: Yisheng Technology Tianjin Co ltd
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2021-12-17
Anticipated expiration: 2031-01-15

Abstract

The utility model provides an automatic trade needle type many needles blood sampling pen, including solid fixed cylinder, play needle drive structure, degree of depth adjustment subassembly and many needles fixed subassembly, gu the fixed cylinder bottom is fixed with degree of depth adjustment subassembly joint, it installs with many needles fixed subassembly gu the fixed cylinder is inside just go out the top of needle drive structure and wear out solid fixed cylinder setting, be provided with a plurality of blood taking needles in the many needles fixed subassembly, it is provided with the actuating lever that is used for driving the blood taking needle and reciprocates to go out to be provided with in the needle drive structure to be convenient for press the blood taking needle in order to carry out blood sampling work. The multi-needle fixing component of the multi-head blood sampling pen is internally provided with a plurality of blood sampling needles which can be used in sequence, thereby improving the use times, reducing the replacement frequency and improving the efficiency of blood sampling work; the needle outlet driving structure can automatically replace the blood taking needle without manual replacement again when the blood taking use returns, thereby improving the working efficiency.

Description

Automatic needle-changing type multi-needle blood sampling pen

Technical Field

The utility model belongs to blood sampling equipment field especially relates to an automatic trade needle type many needles 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

The utility model aims to solve the problem of providing an automatic needle changing type multi-needle blood sampling pen, a plurality of blood sampling needles are arranged in a multi-needle fixing component of the multi-needle blood sampling pen, and the multi-needle blood sampling pen can be used in such a way, thereby improving the use times, reducing the changing frequency and improving the efficiency of blood sampling work; the needle outlet driving structure can automatically replace the blood taking needle without manual replacement again when the blood taking use returns, thereby improving the working efficiency.

In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides an automatic trade needle type many needles blood sampling pen, includes solid fixed cylinder, play needle drive structure, degree of depth adjustment subassembly and many needles fixed subassembly, gu fixed cylinder bottom is fixed with degree of depth adjustment subassembly joint, it installs with many needles fixed subassembly to go out needle drive structure the solid fixed cylinder is inside just it wears out solid fixed cylinder setting to go out needle drive structure's top, be provided with a plurality of blood taking needles in the many needles fixed subassembly, it is provided with the actuating lever that is used for driving the blood taking needle and reciprocates to go out to be convenient for press the blood taking needle in order to carry out blood sampling work.

Furthermore, the needle outlet driving structure comprises a pressing moving component and a rotating positioning component, and the pressing moving component can drive the rotating positioning component to rotate by moving up and down;

the pressing moving assembly comprises a button, a reset spring, a driving rod, a lifting spring, a driving barrel and a transition barrel, the driving rod comprises a driving head at the top and a driving part at the bottom, the top end and the bottom end of the reset spring are respectively clamped at the center of the top wall of the button and the top of the driving head, the lifting spring is sleeved outside the driving part, and the two ends of the lifting spring are respectively positioned at the bottom of the driving head and in a clamping groove in the driving barrel;

the bottom of the button is symmetrically provided with two groups of pressing strips, the inner wall of the bottom of each pressing strip is provided with a guide post, the driving cylinder is positioned below the button, the pressing strips are sleeved on the outer side of the driving cylinder, the driving rod is positioned on the inner side of the driving cylinder, the outer side of the bottom of the driving cylinder is sleeved with a transition cylinder, and the transition cylinder is in contact with the bottom wall of a limiting ring on the outer wall of the driving cylinder;

the rotary positioning assembly comprises a first rotary ring, a second rotary ring and a third rotary limiting ring, the first rotary ring, the second rotary ring and the third rotary limiting ring are coaxially arranged from top to bottom, the first rotary ring and the second rotary ring are spliced for limiting and fixing, a positioning arc plate is arranged at the top of the third rotary limiting ring, and the positioning arc plate is inserted into the second rotary ring and is tightly attached to the inner wall of the second rotary ring;

the outer wall of the first rotating ring is provided with two symmetrically-arranged rotating grooves, guide posts at the bottoms of the two pressing strips are respectively clamped in the two rotating grooves, the outer wall of the second rotating ring is provided with two symmetrically-arranged second rotating grooves, the two second rotating grooves are opposite to the bottoms of the rotating grooves, the outer wall of the second rotating ring is provided with two parallel sliding channels in the circumferential direction, a vertical sliding groove is arranged on the groove wall at the central position of each sliding channel, a sliding block is connected in the sliding groove in a sliding manner, and a sliding button is further connected on the sliding block in a sliding manner;

the circumference is provided with a plurality of positioning groove on the outer wall of third rotatory spacing ring, and wherein second rotatory recess, spout correspond respectively to communicate and have a positioning groove.

Furthermore, a clamping block is arranged on the bottom wall of the sliding groove, a second protruding block is arranged at the end part of the bottom side of the clamping block, two grooves which can be clamped and fixed with the clamping block are arranged on the bottom wall of the sliding block and respectively form a first groove and a second groove, a sliding through groove is arranged on the top wall of the sliding block, the sliding button is an arc-shaped plate with a top wall on which a shifting block is arranged, and a sliding block is arranged on the bottom wall of the sliding button and inserted into the sliding through groove.

Further, the length of the sliding block is smaller than or equal to the width of the sliding block, and the width of the sliding block is smaller than the width of the sliding channel.

Furthermore, a plurality of positioning columns are arranged on the bottom wall of the first rotating ring, a plurality of positioning grooves are formed in the top wall of the second rotating ring, and the positioning columns are inserted into the positioning grooves.

Furthermore, the transition cylinder comprises a first cylinder, a second cylinder, a third necking cylinder and a fourth cylinder which are integrally formed from top to bottom, the second cylinder, the third necking cylinder and the fourth cylinder are inserted in the first rotating ring and the second rotating ring, and the first cylinder is positioned between the first rotating ring and the limiting ring.

Furthermore, a plurality of first bumps are arranged on the inner wall of the fourth cylinder in the circumferential direction, one of the first bumps is provided with a through hole, and the top of the first bump is connected with a limiting vertical block; the bottom of a driving cylinder is provided with a location section of thick bamboo, the spacing section of thick bamboo of bottom fixedly connected with of a location section of thick bamboo, the lateral wall bottom of a driving cylinder is provided with first spacing groove, the bottom of a location section of thick bamboo is provided with the stopper, one side of stopper is provided with the open-ended second spacing groove, the outside cover of a spacing section of thick bamboo is equipped with the torsional spring, the first end card of torsional spring is established at first spacing inslot, and the second end of torsional spring is inserted and is established in the through-hole of a transition section of thick bamboo.

Furthermore, a first observation window, a second observation window, a first positioning insertion block and a second positioning groove are formed in the outer wall of the fixed cylinder, two first positioning grooves and two second positioning grooves which are vertically and symmetrically formed are formed in the inner wall of the fixed cylinder, the first observation window is arranged right opposite to the sliding button b, and the shifting block b penetrates through the second observation window;

the pressing strip is arranged in the first positioning groove and is connected with the first positioning groove in a sliding mode up and down;

two second positioning fixture blocks are symmetrically arranged on the outer wall of the driving cylinder and are respectively clamped in the two second positioning grooves.

Furthermore, a driving moving groove is vertically arranged on the driving cylinder, and the top of the driving moving groove is also communicated with a driving positioning groove; a positioning fixture block is arranged on the outer wall of the driving head of the driving rod and is clamped in the driving positioning groove; the limiting device is characterized in that a positioning rod is arranged at the center of the limiting barrel, a positioning through hole is formed in the driving part, the top of the positioning rod is inserted into the positioning through hole, and a through groove for the driving part to pass through is formed in the driving barrel.

Furthermore, a first clamping jaw is arranged inside the top wall of the button, a rib plate is arranged on the inner wall of the button, a second clamping jaw is arranged at the top of the driving head, two ends of the reset spring are respectively clamped in the first clamping jaw and the second clamping jaw, a rotating inclined plane is arranged on the driving head, and the rib plate is arranged right above the rotating inclined plane;

the button is provided with two symmetrical movable limiting blocks, the driving cylinder is provided with a movable limiting groove, and the side wall of the driving cylinder is provided with a second limiting ring and is located at the bottom of the movable limiting groove.

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 second positioning claw is arranged on the limiting cylinder, a plurality of first positioning claws are uniformly arranged on the inner wall of the third rotary limiting ring, the second positioning claw and the first positioning claw are arranged corresponding to the groove on the outer wall of the ring cylinder, and the end surface of the second positioning claw is clamped with the groove of the ring cylinder; and the first positioning claw and the protruding position of the groove on the outer wall of the ring cylinder form a ratchet wheel and pawl mechanism.

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.

The utility model has the advantages and positive effects that:

1. the utility model discloses a bull blood sampling pen includes a fixed section of thick bamboo in proper order, goes out needle drive structure, degree of depth adjustment subassembly and the fixed subassembly of many needles, and is provided with a plurality of blood taking needles in the fixed subassembly of many needles, reduces the change frequency of blood taking needle, saves time, raises the efficiency.

2. The utility model provides a go out needle drive structure is including pressing removal subassembly and rotational positioning subassembly, presses the removal subassembly and can hit out the blood sampling needle and realize the blood sampling function when using, presses the removal subassembly simultaneously and realizes the automatic function of trading the needle when returning with the cooperation of rotational positioning subassembly, need not artifical manual needle changing once more, improves work efficiency, and it is convenient to use.

3. The utility model discloses a through the different states of the removable blood sampling pen of slider and sliding button in the rotational positioning subassembly, when using for the first time, change to the length of going out of needle that the debugging state is used for debugging the blood sampling needle, make it satisfy the blood sampling demand, later change to the user state again and use, the operation is convenient, and the suitability is strong.

Drawings

FIG. 1 is a combined structure diagram of an automatic needle-changing type multi-needle blood sampling pen of the present invention;

FIG. 2 is a drawing showing the automatic needle-changing type multi-needle blood sampling pen of the present invention;

FIG. 3 is a cross-sectional view of the automatic needle-changing type multi-needle blood sampling pen of the present invention;

FIG. 4 is a combined structure diagram of the needle-out driving structure of the automatic needle-changing type multi-needle blood sampling pen of the present invention;

FIG. 5 is a disassembled view of the needle-out driving structure of the automatic needle-changing type multi-needle blood sampling pen of the present invention;

FIG. 6 is a first schematic structural view of a fixing cylinder of the automatic needle-changing type multi-needle blood sampling pen of the present invention;

FIG. 7 is a second schematic structural view of a fixing cylinder of the automatic needle-changing type multi-needle blood sampling pen of the present invention;

FIG. 8 is a schematic structural view of a driving rod of the automatic needle-changing type multi-needle blood sampling pen of the present invention;

FIG. 9 is a schematic view of the assembly of the driving rod, the return spring and the lifting spring of the automatic needle-changing type multi-needle blood sampling pen of the present invention;

FIG. 10 is a schematic structural view of a button of a multi-needle blood sampling pen with an automatic needle replacement;

FIG. 11 is a schematic structural view of a driving barrel of the automatic needle-changing type multi-needle blood sampling pen of the present invention;

FIG. 12 is a sectional view of a driving cylinder of a multi-needle lancet with an automatic needle-changing mechanism according to the present invention;

FIG. 13 is an assembly view of the driving cylinder, the transition cylinder and the rotary positioning assembly of the automatic needle-changing type multi-needle blood sampling pen of the present invention;

FIG. 14 is a cross-sectional view of FIG. 13;

FIG. 15 is a first schematic structural view of a transition cylinder of an automatic needle-changing type multi-needle blood sampling pen of the present invention;

FIG. 16 is a schematic structural view of a transition cylinder in the automatic needle-changing type multi-needle blood sampling pen of the present invention;

FIG. 17 is a schematic structural view of a rotary positioning assembly of the automatic needle changing type multi-needle blood sampling pen of the present invention;

FIG. 18 is a schematic structural view of a first rotating ring of the automatic needle-changing type multi-needle blood sampling pen of the present invention;

FIG. 19 is a schematic structural view of a second rotating ring of the automatic needle-changing type multi-needle blood sampling pen of the present invention;

FIG. 20 is a schematic structural view of a third rotary limiting ring in the automatic needle-changing type multi-needle blood sampling pen of the present invention;

FIG. 21 is a schematic view of the assembly of the slider and the sliding button of the automatic needle-changing multi-needle blood sampling pen of the present invention;

FIG. 22 is a schematic structural view of a multi-needle fixing assembly of an automatic needle-changing type multi-needle blood sampling pen of the present invention;

FIG. 23 is a first schematic structural view of a fixed needle cylinder of an automatic needle-changing multi-needle blood sampling pen of the present invention;

FIG. 24 is a second schematic structural view of a fixed needle cylinder of an automatic needle-changing multi-needle blood sampling pen of the present invention;

FIG. 25 is a first schematic view showing the structure of the outer sleeve of the automatic needle changing type multi-needle blood sampling pen of the present invention;

FIG. 26 is a second schematic structural view of an outer sleeve of the automatic needle changing type multi-needle blood sampling pen of the present invention;

FIG. 27 is a schematic view of a blood collection needle of the automatic needle changing type multi-needle blood collection pen of the present invention;

FIG. 28 is a sectional view of a combination of a fixed cylinder and a blood collection needle in an automatic needle changing type multi-needle blood collection pen of the present invention;

FIG. 29 is a schematic structural view of a depth adjustment assembly of an automatic needle changing type multi-needle blood collection pen of the present invention;

FIG. 30 is a sectional view of a depth adjustment assembly of an automatic needle changing type multi-needle blood collection pen of the present invention;

fig. 31 is a first schematic structural view of an upper positioning ring in the automatic needle changing type multi-needle blood sampling pen of the present invention;

FIG. 32 is a second schematic structural view of an upper positioning ring in the automatic needle changing type multi-needle blood sampling pen of the present invention;

FIG. 33 is a schematic view showing the structure of a driving ring in an automatic needle changing type multi-needle blood sampling pen of the present invention;

FIG. 34 is a schematic view of the lifting ring of the automatic needle-changing type multi-needle blood sampling pen of the present invention;

FIG. 35 is a schematic view of the third rotation limiting ring and the transition cylinder of the automatic needle-changing multi-needle blood sampling pen of the present invention;

FIG. 36 is a schematic view showing the connection between the driving barrel and the transition barrel of the automatic needle-changing type multi-needle blood sampling pen of the present invention;

in the figure:

1, a fixed cylinder, 101, a first observation window, 102, a second observation window, 103, a first positioning insertion block, 104, a second positioning groove, 105, a first positioning groove, 106, a second positioning groove and 107, a third observation window;

2-needle-out driving structure, 21-driving rod, 211-driving head, 211-1, positioning fixture block, 211-2, second clamping jaw, 211-3, rotating inclined plane, 212-driving part, 212-1, positioning through hole, 213-contact rod and 214-clamping protrusion;

a-pressing moving assembly, a 1-button, a1-1, pressing bar, a1-2, guide column, a1-3, first clamping jaw, a1-4, ribbed plate, a1-5 and moving limiting block; a 2-a reset spring, a 3-a lifting spring, a 4-a driving cylinder, a4-1, a clamping groove, a4-2, a limiting ring, a4-3, a positioning cylinder, a4-3-1, a limiting block, a4-3-2, a second limiting groove, a4-4, a limiting cylinder, a4-4-1, a positioning rod, a4-4-2, a second positioning claw, a4-5, a first limiting groove, a4-6, a second positioning clamping block, a4-7, a driving moving groove, a4-8, a driving positioning groove, a4-9, a moving limiting groove, a4-10, a second limiting ring, a4-11, a through groove, a 5-a transition cylinder, a5-1, a first cylinder, a5-2, a second cylinder, a5-3, a third necking cylinder, a5-4, A fourth cylinder, a5-4-1, a first bump, a5-4-2, a through hole, a5-4-3, a third positioning fixture block, a5-4-4, a positioning block, a5-4-5, a limiting vertical block and a 6-torsion spring;

b-a rotary positioning component, b 1-a first rotary ring, b1-1, a rotary groove, b1-2, a positioning column, b 2-a second rotary ring, b2-1, a second rotary groove, b2-2, a sliding channel, b2-3, a sliding groove, b2-4, a clamping block, b2-5, a second bump, b2-6, a positioning groove, b 3-a third rotary limiting ring, b3-1, a positioning arc plate, b3-2, a positioning groove, b3-3, a first positioning claw, b 4-a sliding block, b4-1, a first groove, b4-2, a second groove, b4-3, a sliding through groove, b 5-a sliding button, b5-1, a sliding block, b5-2 and a shifting block;

3-depth adjusting component, 31-upper positioning ring, 311-first positioning protrusion, 312-first positioning notch, 313-limiting protrusion, 314-first positioning boss, 315-second positioning notch, 32-driving ring, 321-gear adjusting protrusion, 322-first spiral protrusion, 323-circular arc protrusion, 33-lifting ring, 331-second positioning protrusion, 332-spiral groove, 333-second spiral protrusion and 34-needle outlet hole;

4-multi-needle fixing component, 41-fixed needle cylinder, 410-positioning cavity, 411-third positioning notch, 412-sixth positioning protrusion, 4121-barb, 413-seventh positioning protrusion, 4131-shoulder fixing surface, 414-fifth positioning notch, 415-fixed column, 416-ninth positioning protrusion, 417-annular cylinder and 418-first needle outlet hole; 42-outer sleeve, 421-sixth positioning groove, 422-fifth positioning protrusion, 423-seventh positioning groove, 424 height-limiting ring, 425-eighth positioning protrusion, 426-isolation boss, 427-tenth positioning protrusion and 428-second needle outlet hole;

5-blood taking needle, 51-needle, 52-protective sleeve, 521-fixing section, 522-driving section, 5221-ear hanging projection, 5224-third positioning projection, 5225-thin wall area and 53-sleeve head.

Detailed Description

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

Referring to fig. 1 to 3, an automatic needle changing type multi-needle blood sampling pen, including a fixed cylinder 1, go out needle drive structure 2, degree of depth adjusting part 3 and multi-needle fixed subassembly 4, fixed cylinder 1 bottom is fixed with degree of depth adjusting part 3 joint, it installs at fixed cylinder 1 inside and goes out needle drive structure 2's top and wear out a fixed cylinder 1 setting with multi-needle fixed subassembly 4 to go out needle drive structure 2, be provided with a plurality of blood taking needles 5 in the multi-needle fixed subassembly 4, it is provided with the actuating lever 21 that is used for driving blood taking needle 5 and reciprocates to go out to be provided with in the needle drive structure 2, thereby be convenient for press blood taking needle 5 in order to carry out blood sampling work. The fixed cylinder 1 is used for installing and fixing all components, the depth adjusting component 3 is used for adjusting the needle discharging length of the blood taking needle 5, the needle discharging driving structure 2 is used for pressing the blood taking needle 5 out to perform blood taking work and needle changing, and each blood taking needle 5 is guaranteed to be used once, so that the safety is guaranteed; the multi-needle fixing assembly 4 is used for storing a plurality of blood collection needles 5 at the same time, and is convenient to use and replace.

Referring to fig. 6 and 7, in this embodiment, the outer wall of the fixed cylinder 1 is provided with a first observation window 101, a second observation window 102, a third observation window 107, a first positioning insert 103 and a second positioning groove 104, and the inner wall of the fixed cylinder 1 is provided with two first positioning grooves 105 and two second positioning grooves 106 which are vertically and symmetrically arranged. The first observation window 101 is used for observing whether the blood sampling pen is in a debugging state or a using state; the second observation window 102 is convenient for the shifting block b5-2 to move up and down, so that the state of the blood sampling pen is changed, when the shifting block b5-2 is positioned above, the blood sampling pen is in a debugging state, and when the shifting block b5-2 is positioned below, the blood sampling pen is in a using state, and blood sampling can be directly carried out; the third observation window 107 is used for observing the use number of the blood taking needle 5, thereby judging whether the blood taking needle needs to be replaced; the first positioning plug 103 and the second positioning groove 104 are used for fixedly mounting the fixed cylinder 1 and the upper positioning ring 31 in the depth adjusting assembly 3.

Referring to fig. 4 to 5, the needle withdrawing driving structure 2 includes a pressing moving component a and a rotating positioning component b, and the pressing moving component a can drive the rotating positioning component b to rotate by moving up and down. The pressing moving component a can drive the rotary positioning component b to rotate when pressed downwards, and then the blood taking needle 5 is convenient to press down for blood taking and use and is convenient to replace the new blood taking needle 5.

As shown in fig. 8, the driving rod 21 includes a driving head 211 at the top and a driving part 212 at the bottom, the driving part 212 is fixedly provided with a contact rod 213, and the lower end of the contact rod 213 is provided with a clamping protrusion 214; as shown in fig. 9, the top end and the bottom end of the return spring a2 are respectively clamped at the center of the top wall of the button a1 and the top of the driving head 211, specifically, referring to fig. 10 and 9, a first clamping jaw a1-3 is arranged inside the top wall of the button a1, a second clamping jaw 211-2 is arranged at the top of the driving head 211, and two ends of the return spring a2 are respectively clamped inside the first clamping jaw a1-3 and the second clamping jaw 211-2; the lifting spring a3 is sleeved outside the driving part 212, and two ends of the lifting spring a3 are respectively located at the bottom of the driving head 211 and in the clamping groove a4-1 in the driving cylinder a 4; the return spring a2 and the lifting spring a3 are respectively positioned above and below the driving head 211, when the button 1 is pressed to move downwards, the return spring a2 is compressed, then the return spring a2 releases to press the driving rod 21 to move downwards, the lifting spring a3 continues to store energy, due to inertia, the driving rod 21 continuously moves downwards until the bottom of the driving part 212 contacts with the top wall of the through groove a4-11, the driving rod 21 stops moving downwards, the blood taking needle 5 is pricked out at the moment, the return spring a2 is in a stretching state at the moment, the lifting spring a3 is in a compression state, the driving rod 21 rapidly retracts under the action of the two springs, and the clamping protrusion 214 of the driving rod is clamped with the blood taking needle 5 to drive the blood taking needle 5 to retract into the positioning cavity 410, so that the blood taking needle 5 retracts.

As shown in fig. 4 and 10, two groups of pressing strips a1-1 are symmetrically arranged at the bottom of the button a1, and the pressing strips a1-1 are arranged in the first positioning groove 105 and are connected in a sliding manner up and down along the first positioning groove 105; the design limits the button a1 and the fixed cylinder 1, so that the button a1 can only vertically move up and down to prevent the button a 3578 and the fixed cylinder from rotating relatively; a guide column a1-2 is arranged on the inner wall of the bottom of the pressing strip a1-1, the driving cylinder a4 is positioned below the button a1, the pressing strip a1-1 is sleeved on the outer side of the driving cylinder a4, two second positioning fixture blocks a4-6 are symmetrically arranged on the outer wall of the driving cylinder a4, and the two second positioning fixture blocks a4-6 are respectively clamped in the two second positioning grooves 106; the driving cylinder a4 is clamped and fixed with the fixed cylinder 1, so that the driving cylinder a4 is prevented from rotating; the driving rod 21 is located at the inner side of the driving cylinder a4, the outer side of the bottom of the driving cylinder a4 is sleeved with a transition cylinder a5, and the transition cylinder a5 is in contact with the bottom wall of a limiting ring a4-2 on the outer wall of the driving cylinder a 4. The limiting ring a4-2 limits the transition cylinder a5 and the driving cylinder a4 to move up and down, and keeps the transition cylinder a5 and the driving cylinder a4 stable.

Referring to fig. 6, 7 and 8, a driving moving groove a4-7 is vertically formed on the driving cylinder a4, and a driving positioning groove a4-8 is further communicated with the top of the driving moving groove a 4-7; a positioning fixture block 211-1 is arranged on the outer wall of the driving head 211 of the driving rod 21, and the positioning fixture block 211-1 is clamped in the driving positioning groove a 4-8; the driving head 211 is provided with a rotary inclined plane 211-3, the inner wall of the button a1 is provided with a ribbed plate a1-4, and the ribbed plate a1-4 is arranged right above the rotary inclined plane 211-3; in a normal state, the positioning latch 211-1 is latched in the driving positioning groove a4-8, but when in use, the button a1 is pressed downwards, so that the rib plate a1-4 presses the rotating inclined surface 211-3 to rotate the driving rod 21, and the positioning latch 211-1 is screwed out of the driving moving groove a4-7 and moves downwards along the driving moving groove a4-7, and at the moment, the driving rod 21 continuously moves downwards, so that the function of knocking out the blood lancet 5 can be realized.

In addition, a positioning rod a4-4-1 is arranged at the center of the limiting cylinder a4-4, a positioning through hole 212-1 is formed in the driving part 212, the top of the positioning rod a4-4-1 is inserted into the positioning through hole 212-1, a through groove a4-11 for the contact rod 213 to pass through is formed in the driving cylinder a4, when the driving rod 21 moves downwards, the contact rod 213 connected with the driving part 212 passes through the through groove a4-11 to be in contact with the blood taking needle 5 so as to drive the blood taking needle 5 to move downwards, and the driving rod 21 stops moving downwards after the bottom end of the driving part 212 is in contact with the top wall of the through groove a 4-11. The button a1 is provided with two symmetrical movable limit blocks a1-5, the driving cylinder a4 is provided with a movable limit groove a4-9, the side wall of the driving cylinder a4 is provided with a second limit ring a4-10 and is positioned at the bottom of the movable limit groove a 4-9. When the button a1 is continuously moved downwards, the lowest position is reached when the moving stopper a1-5 contacts the second stopper a 4-10.

Referring to fig. 13, 14 and 17, the rotational positioning assembly b includes a first rotating ring b1, a second rotating ring b2 and a third rotating limiting ring b3, the first rotating ring b1, the second rotating ring b2 and the third rotating limiting ring b3 are coaxially arranged from top to bottom, the first rotating ring b1 and the second rotating ring b2 are inserted and fixed in a limiting manner, specifically, a plurality of positioning posts b1-2 are arranged on the bottom wall of the first rotating ring b1, a plurality of positioning slots b2-6 are arranged on the top wall of the second rotating ring b2, and the positioning posts b1-2 are inserted into the positioning slots b 2-6. This design facilitates the positioning and assembly of the first rotating ring b1, the second rotating ring b 2.

As shown in fig. 20, a positioning arc plate b3-1 is arranged at the top of the third rotation limiting ring b3, and the positioning arc plate b3-1 is inserted into the second rotating ring b2 and is arranged at a gap from the inner wall of the second rotating ring b 2; this design facilitates the positioning and assembly of the second rotating ring b2 and the third rotating ring b 3.

Referring to fig. 18 and 19, the outer wall of the first rotating ring b1 is provided with two symmetrically-arranged rotating grooves b1-1, guide posts a1-2 at the bottoms of two pressing strips a1-1 are respectively clamped in the two rotating grooves b1-1, the outer wall of the second rotating ring b2 is provided with two symmetrically-arranged second rotating grooves b2-1, the two second rotating grooves b2-1 are arranged opposite to the bottoms of the rotating grooves b1-1, the outer wall of the second rotating ring b2 is provided with two parallel sliding channels b2-2 in the circumferential direction, the groove wall at the center of the sliding channel b2-2 is provided with a vertical sliding groove b2-3, the sliding groove b2-3 is connected with a sliding block b4 in a sliding manner, and the sliding block b4 is further connected with a sliding button b5 in a sliding manner; the outer wall of the third rotary limiting ring b3 is circumferentially provided with a plurality of positioning grooves b3-2, wherein the second rotary groove b2-1 and the sliding groove b2-3 are respectively and correspondingly communicated with a positioning groove b 3-2. The first rotating ring b1 and the second rotating ring b2 are fixedly clamped, the third rotating limiting ring b3 and the second rotating ring b2 are connected through a sliding block b4, and when the sliding block b4 moves downwards and is positioned in the sliding groove b2-3 and the positioning groove b3-2 at the same time, the second rotating ring b2 and the third rotating limiting ring b3 are fixed; when the slider b4 is located only in the slide groove b2-3, the second rotating ring b2 is not fixed to the third rotation-restricting ring b3 at this time.

The inner wall of the third rotary limiting ring b3 is uniformly provided with a plurality of first positioning claws b3-3, the first positioning claws b3-3 are arranged corresponding to the grooves in the outer wall of the ring cylinder 417, and the end faces of the first positioning claws b3-3 are clamped with the grooves in the ring cylinder 417, so that the protruding positions of the first positioning claws b3-3 and the grooves in the outer wall of the ring cylinder 417 form a ratchet and pawl mechanism. When the third rotation limiting ring b3 is fixed with the second rotation ring b2, and the use state is at this time, when the button a1 is moved downwards, the guide post a1-2 moves along the rotation groove b1-1, because the rotation groove b1-1 is inclined, the first rotation ring b1 rotates forward, so as to drive the second rotation ring b2 and the third rotation limiting ring b3 to rotate forward, because the third rotation limiting ring b3 forms a ratchet and pawl mechanism with the ring barrel 417 through the first positioning pawl b3-3, and the second positioning pawl a4-4-2 of the driving barrel a4 is clamped with the ring barrel 417, so that the driving rod 21 does not drive the ring barrel 417 to rotate when the third rotation limiting ring b3 rotates forward, and the driving rod 21 directly drives out the blood taking needle 5 for use; the guide column a1-2 sequentially passes through the rotary groove b1-1, the second rotary groove b2-1 and the positioning groove b3-2, and drives the blood taking needle 5 to return to the original position after the driving rod 21 is driven to shoot out the blood taking needle 5 along with the downward movement of the button a 1; when the button a1 is not pressed any more, the guiding post a1-2 returns along the path moving downward, at this time, the first rotating ring b1, the second rotating ring b2 and the third rotating ring b3 rotate in opposite directions, and the first positioning claws b3-3 of the third rotating ring b3 rotate the ring cylinder 417, so that the blood collection needle 5 is automatically replaced. This design thus provides for automatic replacement of the lancet 5 with a new unused lancet during the return of the button a1 each time it is used, making it more convenient to use.

When the third rotary limiting ring b3 and the second rotary ring b3 are not fixed, the blood sampling device is in a debugging state at this time, the second rotary ring b2 does not rotate to drive the third rotary limiting ring b3 to rotate at this time, so when the button a1 is pressed, the same blood sampling needle 5 is shot out, and the blood sampling device is suitable for adjusting the needle outlet length of the blood sampling needle 5 in the state, is matched with the depth adjusting component 3 for use, and mainly adjusts the needle outlet length of the blood sampling needle 5 so as to adapt to different blood sampling samples.

Specifically, referring to fig. 17, 19 and 21, a clamping block b2-4 is arranged on the bottom wall of the sliding groove b2-3, a second bump b2-5 is arranged at the bottom end of the clamping block b2-4, two grooves which can be clamped and fixed with the clamping block b2-4 are arranged on the bottom wall of the sliding block b4 and are respectively a first groove b4-1 and a second groove b4-2, a sliding through groove b4-3 is arranged on the top wall of the sliding block b4, the sliding button b5 is an arc-shaped plate with a shifting block b5-2 arranged on the top wall, the shifting block b5-2 penetrates through the second observation window 102, a sliding block b5-1 is arranged on the bottom wall of the sliding button b5, and the sliding block b5-1 is inserted into the sliding through groove b 4-3. The sliding button b5 is provided to move the slider b4 up and down, thereby fixing and releasing the third rotation limiting ring b3 to change the use state of the lancet. When the blood taking pen is in a debugging state, the third rotary limiting ring b3 is not connected with the second rotary ring b2, at the moment, the shifting block b5-2 is positioned above, the second groove b4-2 of the sliding block b4 is clamped with the second bump b2-5, at the moment, the third rotary limiting ring b3 does not rotate, and the needle withdrawing length of the blood taking needle 5 can be debugged; when the blood taking pen is in a use state, the shifting block b5-2 is located below, the sliding block b4 is driven to move downwards in the sliding groove b2-3 until the first groove b4-1 is clamped with the second bump b2-5, and then the third rotary limiting ring b3 and the second rotary ring b2 are fixed, so that the blood taking needle 5 can be automatically replaced during use.

In addition, the length of the sliding slider b5-1 is less than or equal to the width of the slider b4, the width of the sliding slider b5-1 is less than the width of the sliding channel b2-2, and when the second rotating ring b2 rotates, in order to prevent the sliding button b5 from obstructing the normal rotation of the second rotating ring b2, the sliding ring block b5-1 is arranged so that the sliding button b5 can slide along the sliding channel b2-2, thereby ensuring the normal rotation of the second rotating ring b 2.

In addition, because the interactive button b5 is the arc, can mark on the surface of this arc debugging state and user state, show by first observation window 101, can conveniently explain and read what state the blood sampling pen is in.

Referring to fig. 15 and 16, transition cylinder a5 includes, from top to bottom, a first cylinder a5-1, a second cylinder a5-2, a third necked cylinder a5-3, and a fourth cylinder a5-4 that are integrally formed, with the second cylinder a5-2, the third necked cylinder a5-3, and the fourth cylinder a5-4 interposed within the first rotating ring b1 and the second rotating ring b2, and with the first cylinder a5-1 positioned between the first rotating ring b1 and the check ring a 4-2. The first cylinder a5-1 is disposed opposite to the third viewing window 107, and numbers can be marked on the side wall of the first cylinder a5-1 uniformly on the circumference, starting with 1, 1 can be marked with a prominent color such as red or yellow, and the marked numbers can be viewed from the third viewing window 107. The number 6 is set to face the third observation window 107 when the mounting is performed, and then the transition cylinder a5 is continuously rotated as the replacement use of the bottom lancet is performed, and when the third observation window 107 displays the number 1, it is proved that the replacement of the new lancet is required at this time.

Referring to fig. 14 and 15, a plurality of first protrusions a5-4-1 are circumferentially arranged on the inner wall of the fourth cylinder a5-4, wherein one first protrusion a5-4-1 is provided with a through hole a5-4-2, and the top wall thereof is provided with a limiting vertical block a 5-4-5; the bottom of the driving cylinder a4 is provided with a positioning cylinder a4-3, the bottom of the positioning cylinder a4-3 is fixedly connected with a limiting cylinder a4-4, the bottom of the side wall of the driving cylinder a4 is provided with a first limiting groove a4-5, the bottom of the positioning cylinder a4-3 is provided with a limiting block a4-3-1, one side of the limiting block a4-3-1 is provided with an open second limiting groove a4-3-2, the outer side of the limiting cylinder a4-4 is sleeved with a torsion spring a6, the first end of the torsion spring a6 is clamped in the first limiting groove a4-5, and the second end of the torsion spring a6 is inserted in the through hole a 5-4-2; during assembly, the second end of the torsion spring a6 is inserted into the through hole a5-4-2 of the transition cylinder a5 by passing the second end through the second limit groove a4-3-2 and then sleeving the transition cylinder. The bottom of the first bump a5-4-1 extends out of the bottom wall of the fourth cylinder a5-4 to form a third positioning block a5-4-3, and the third positioning block a5-4-3 is clamped in the groove of the ring cylinder 417, so that the ring cylinder 417 and the transition cylinder a5 are fixed, and the two rotate at the same time. And the outer wall of one of the third positioning blocks a5-4-3 is provided with a positioning block a5-4-4, and one side of the positioning arc plate b3-1 of the third rotary limiting ring b3 is attached to the third positioning block a5-4-3, so that the third rotary limiting ring b3 rotates along with the rotation. When the blood taking pen rotates to be close to one circle, the positioning arc plate b3-1 is clamped with the positioning block a5-4-4, after the limiting block a4-3-1 on the driving cylinder a4 abuts against the limiting vertical block a5-4-5 on the transition cylinder a5, the driving cylinder a4, the transition cylinder a5 and the third rotating limiting ring b3 are clamped simultaneously, so that the blood taking pen cannot rotate any more, and at the moment, the multi-needle fixing component 4 clamped at the bottom needs to be pulled down to replace the blood taking needle 5. In addition, due to the torsion spring a6, after the multi-needle fixing assembly 4 is pulled out, the transition cylinder a5 and the driving cylinder a4 return to the original positions under the elastic force of the torsion spring a6, that is, the torsion spring a6 drives the transition cylinder a5 to return quickly. Reference may be made to fig. 35, which is an initial state diagram of the third rotation limiting ring b3 and the transition cylinder a5 during assembly, reference may be made to fig. 36, which is an initial state diagram of the driving cylinder a4 and the transition cylinder a5 during assembly, and as the third rotation limiting ring b3 rotates, the ring cylinder 417 and the transition cylinder a5 are driven to rotate to change needles until the transition cylinder a5 rotates nearly a circle, and the positioning arc plate b3-1 abuts against the positioning block a5-4-4, at the same time, the limiting block a4-3-1 on the driving cylinder a4 abuts against the other end face of the limiting vertical block a5-4-5 on the transition cylinder a5, that is, the transition cylinder a5 rotates a circle on the basis of fig. 36, so that the limiting block a4-3-1 abuts against the other end face of the limiting vertical block a5-4-5, at this time, the third rotation limiting ring b3 is limited and fixed, it is prevented from rotating again, thereby ensuring that the blood lancet 5 is used only once.

As shown in fig. 22 and 28, in the present embodiment, the multi-needle fixing assembly 4 includes a fixed needle cylinder 41 and an outer sleeve 42, the fixed needle cylinder 41 and the outer sleeve 42 are coaxially disposed, and the outer sleeve 42 is sleeved on the outer side of the fixed needle cylinder 41 and is connected to the fixed needle cylinder 41 in a snap fit manner; the fixed needle cylinder 41 comprises a fixed column 415 and a ring cylinder 417, the fixed column 415 and the ring cylinder 417 form a plurality of positioning cavities 410 through partition plates, a plurality of blood collection needles 5 are placed in the positioning cavities 410, the bottoms of the blood collection needles 5 are provided with a first needle outlet 418 and a second needle outlet 428 in a right-facing manner, and the first needle outlet 418 and the second needle outlet 428 are respectively arranged on the bottom wall of the fixed needle cylinder 41 and the bottom wall of the outer sleeve 42; the outer sleeve 42 and the fixed needle cylinder 41 are both made of elastic engineering plastic. The multi-needle fixing component 4 is used for fixedly mounting a plurality of groups of blood taking needles 5 and matching with the rotary driving component b to rotate the blood taking needles 5, thereby achieving the purpose of replacing new blood taking needles 5.

As shown in fig. 23 to 26, in the present embodiment, a plurality of grooves are uniformly formed on the outer wall of the ring cylinder 417 to form a quincunx shape, a sixth positioning protrusion 412 and a seventh positioning protrusion 413 are respectively and fixedly disposed in each adjacent two grooves, and the sixth positioning protrusion 412 and the seventh positioning protrusion 413 are tilted outward along the radial direction of the fixed needle cylinder 41; as shown in fig. 19 and 20, the outer sleeve 42 is provided with a sixth positioning groove 421 and a seventh positioning groove 423 which are respectively matched and corresponding to the sixth positioning protrusion 412 and the seventh positioning protrusion 413, the sixth positioning groove 421 is a through hole structure, and the seventh positioning groove 423 is concavely arranged along the radial direction of the outer sleeve 42; the sixth positioning protrusion 412 is disposed on the upper side of the seventh positioning protrusion 413, the lower end of the sixth positioning protrusion 412 is provided with an upward raised barb 4121, and the seventh positioning protrusion 413 is provided with a shoulder fixing surface 4131; the barb 4121 of the sixth positioning protrusion 412 protrudes out of the sixth positioning groove 421, the groove wall of the seventh positioning groove 423 is provided with a height limiting ring 424, and the shoulder fixing surface of the seventh positioning protrusion 413 is located at the lower side of the height limiting ring 424. The barb 4121 protrudes out of the sixth positioning groove 421, and is configured to limit the upper limit position of the fixed needle cylinder 41, and the height-limiting ring 424 is configured to abut against the shoulder fixing surface 4131 of the seventh positioning protrusion 413, so as to fix the lower limit position of the fixed needle cylinder 41. When fixed barrel 41 is assembled with outer sleeve 42, barbs 4121 project radially outwardly from collar 417. When the blood taking needle 5 is completely taken out after use, the sixth positioning protrusion 412 is contracted, at this time, the barb 4121 is clamped on the upper end surface of the sixth positioning groove 421, and meanwhile, the shoulder fixing surface 4131 is in abutting fit with the limiting ring 424, so that the axial positioning is realized, the blood taking needle 5 which is taken out is prevented from being reused, and the reuse is avoided.

In addition, the inner wall of the outer sleeve 42 is provided with a separation boss 426, the separation boss 426 is arranged below the sixth positioning groove 421, and the ring cylinder 417 is circumferentially limited by the plurality of separation bosses 426. The center of the bottom wall of the outer sleeve 42 is provided with a fifth positioning protrusion 422, the bottom wall of the fixed syringe 41 is provided with a fifth positioning notch 414 matched with the fifth positioning protrusion 422, and the fifth positioning protrusion 422 and the fifth positioning notch 414 are both conical and are in clearance fit. When the syringe is installed, the fifth positioning protrusion 422 is inserted into the fifth positioning notch 414, which can play a role in guiding and positioning, and ensure the quick fit between the outer sleeve 42 and the fixed syringe 41, thereby improving the precision and efficiency of assembly. A plurality of eighth positioning protrusions 425 are arranged on the top of the inner wall of the outer sleeve 42, a plurality of ninth positioning protrusions 416 are arranged on the outer wall of the annular cylinder 417, and the eighth positioning protrusions 425 are positioned on the upper sides of the ninth positioning protrusions 416. After combination, the eighth positioning projection 425 is located on the upper side of the ninth positioning projection 416, and the positioning of the outer sleeve 42 and the fixed cylinder 41 in the axial direction is achieved by using the principle of elasticity. Tenth positioning protrusions 427 are disposed adjacent to both sides of each sixth positioning groove 421 in the vertical direction, and the two tenth positioning protrusions 427 are symmetrically disposed with the sixth positioning groove 421 as the center. The tenth positioning protrusion 427 is provided to increase the strength of the outer sleeve 42, so as to prevent the strength of the outer sleeve 42 from being reduced at the sixth positioning groove 421, and to guide and position the lancet assembly when the lancet assembly is mounted, thereby improving the assembly precision.

In addition, in the embodiment, a second positioning claw a4-4-2 is arranged on the limiting cylinder a4-4, a plurality of first positioning claws b3-3 are uniformly arranged on the inner wall of the third rotary limiting ring b3, the second positioning claw a4-4-2 and the first positioning claw b3-3 are both arranged corresponding to the groove on the outer wall of the ring cylinder 417, and the end surface of the second positioning claw a is clamped with the groove of the ring cylinder 417; the first positioning claw b3-3 and the protruding position of the groove on the outer wall of the ring cylinder 417 form a ratchet-pawl mechanism, and the second positioning claw a4-4-2 is clamped with the groove of the ring cylinder 417, so that the rotated multi-needle fixing component 4 can be prevented from rotating reversely; the first positioning claw b3-3 is used for driving the ring cylinder 417 to rotate so as to change the needle; the bottom wall of the fourth cylinder a5-4 is provided with a plurality of third positioning blocks a5-4-3, and the third positioning blocks a5-4-3 are clamped in the grooves of the ring cylinder 417, so that the ring cylinder 417 and the transition cylinder a5 are fixed, and the two rotate at the same time.

As shown in fig. 29 to 34, in the present embodiment, the depth adjustment assembly 3 includes an upper positioning ring 31, a driving ring 32, and a lifting ring 33, which are coaxially disposed, a limiting protrusion 313 is disposed on an outer ring below the upper positioning ring 31, a plurality of gear adjustment protrusions 321 are disposed on an upper end of an inner ring of the driving ring 32, the limiting protrusion 313 corresponds to a groove formed between adjacent gear adjustment protrusions 321, a first spiral protrusion 322 is disposed on a lower end of the inner ring of the driving ring 32, the lifting ring 33 is sleeved in the driving ring 32, a spiral groove 332 is disposed on an outer ring of the lifting ring 33, the first spiral protrusion 322 is disposed in the spiral groove 332 and moves relative to the first spiral protrusion, and a pin outlet 34 is disposed on a lower end of the lifting ring 33.

As shown in fig. 31 and 32, the upper end of the upper positioning ring 31 is provided with a concave positioning notch 312, the inner ring of the upper positioning ring 31 is provided with a first positioning protrusion 311 protruding inwards, the first positioning insertion block 103 on the fixed cylinder 1 is inserted into the positioning notch 312, and the first positioning protrusion 311 is clamped in the second positioning groove 104 on the fixed cylinder 1, so as to fix the upper positioning ring 51 with the fixed cylinder 1.

The upper positioning ring 31, the driving ring 32 and the lifting ring 33 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 31 is smaller than that of the upper end thereof, the lower end of the upper positioning ring 31 extends into the driving ring 32, and the lower end of the upper positioning ring 31 is provided with a barb-shaped first positioning boss 314; in the actual installation, because adopt engineering plastics, have certain elasticity, go up holding ring 31 and go deep into the upper end of driving ring 32 after locking, form the cell body between the protruding 321 is adjusted to adjacent gear, spacing protruding 313 card is inside above-mentioned cell body this moment, and first location boss 314 contacts with the stair structure that the protruding 321 bottom of gear was adjusted to the gear simultaneously, guarantees that holding ring 31 and driving ring 32 are fixed a position in the cooperation of axial direction, simple structure, reliable and stable.

The two sides of the spiral groove 332 are composed of a plurality of second spiral protrusions 333 which are arranged intermittently, and the second spiral protrusions 333 are in contact with and in clearance fit with the inner ring of the driving ring 32, so that the shaking of the driving ring 32 is avoided, and the stability is improved; the outer diameter of the driving ring 32 is less than or equal to the outer diameter of the top end of the upper positioning ring 31, the lower end of the driving ring 32 is provided with an arc protrusion 323, and the outer diameter of the arc protrusion 323 is greater than the outer diameter of the upper end of the driving ring 32; 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 322 is the segmentation setting, and second spiral protrusion 333 is also the segmentation setting, makes things convenient for the two to adorn the card and assemble, because the two all adopts engineering plastics material, in 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, just can dismantle long service life after destroying.

Referring to fig. 31-34, the lower end of the upper positioning ring 31 is provided with a second positioning notch 315, the upper end of the lifting ring 33 is provided with a second positioning protrusion 331, and the second positioning protrusion 331 is disposed in the second positioning notch 315 and slides up and down. The relative rotation between the upper positioning ring 31 and the lifting ring 33 can be prevented, when the driving ring 32 is rotated, the lifting ring 33 moves in the axial direction under the action of the spiral groove 332, and the second positioning protrusion 331 moves up and down in the second positioning notch 315, which is equivalent to converting the rotation of the first spiral protrusion 322 in the spiral groove 332 into the up-and-down linear motion of the lifting ring 33; meanwhile, the two ends of the spiral groove 332 are not communicated but sealed, so that the up-and-down movement distance of the lifting ring 33 is limited, and the rotation angle of the lifting ring 33 is also limited.

As shown in fig. 27, the blood collection needle 5 comprises a needle 51 and a protective sleeve 52, the protective sleeve 52 comprises a driving section 522 and a fixed section 521 which are integrally formed, the needle 51 penetrates through the fixed section 521 and is fixed at the center of the fixed section 521, the driving section 522 is located at the upper end of the fixed section 521, and a lug protrusion 5221, a third positioning protrusion 5224 and a thin-wall area 5225 are arranged on the driving section 522; the bottom end of the needle 51 is provided with a sleeve head 53, and the sleeve head 53 is of a soft rubber structure.

Wherein, the thin wall region 5225 is located at the upper end of the fixing section 521 and is recessed outwards; the driving portion 212 of the driving rod 21 is fixedly provided with a contact rod 213, and the lower end of the contact rod 213 is provided with a clamping protrusion 214.

In this embodiment, the ring cylinder 417 is provided with a third positioning notch 411, and the third positioning notch 411 and the third positioning protrusion 5224 on the blood collection needle 5 can be matched and clamped. In an initial state, the third positioning protrusion 5224 is disposed in the third positioning notch 411, when the driving rod 21 moves downward, the engaging protrusion 214 is not in contact with the engaging protrusion 5221, the protecting sleeve 52 deforms in the thin-wall area 5225, the protecting sleeve 52 bends toward the central axis, so as to extend the needle 51, and when the driving rod 21 moves upward, due to the deformation of the thin-wall area 5225, the engaging protrusion 214 engages with the engaging protrusion 5221, so as to drive the protecting sleeve 52 to move upward, so as to retract the needle 51.

Further, the protective sleeve 52 is made of engineering plastic.

The utility model discloses an automatic trade needle type many needles blood sampling pen is when using:

the utility model discloses an automatic trade needle type many needles blood sampling pen divide into two states and be debugging state and user state respectively: wherein, the fixed length of going out the needle is adjusted for using same blood taking needle 5 to the debugging state, and the user state uses blood taking needle 5 promptly to take a blood sample, and the in-process that button a1 returned is automatic to be changed new blood taking needle 5 so that use next time. Generally, when the blood taking needle is used, the needle outlet length of the blood taking needle 5 is determined according to needs, and then the first blood taking needle 5 is adopted for debugging until the needed length is debugged; and then the operation is changed to the operation state for use.

When in the debug state:

first, the manual adjustment dial b5-2 is located on the upper side of the second view window 102, and the debug status can be displayed at the first view port 101. At this time, the third rotation stopper ring b3 is in a separated state from the second rotation ring b 2;

secondly, the button a1 is manually pressed to move downwards, the return spring a2 is compressed, then the return spring a2 releases and presses the driving rod 21 to move downwards, the lifting spring a3 continues to store energy, due to inertia, the driving rod 21 continuously moves downwards until the bottom of the driving part 212 contacts with the top wall of the through groove a4-11, the driving rod 21 stops moving downwards, at the moment, the return spring a2 is in a stretching state, the lifting spring a3 is in a compressing state, the driving rod 21 immediately and rapidly retracts under the action of the two springs, so that the clamping protrusion 214 of the driving rod is clamped with the blood taking needle 5 to drive the blood taking needle 5 to retract into the positioning cavity 410, and according to the operation, the needle withdrawing length is adjusted by matching with the depth adjusting device 3, namely, the driving ring 32 is forwardly or reversely rotated according to needs to raise or lower the lifting ring 33;

and thirdly, repeatedly pressing the button a1 and adjusting the driving ring 32 until the needle-out length of the blood taking needle 5 reaches the requirement, and debugging is finished.

When in use:

firstly, the manual adjusting shifting block b5-3 is positioned at the lower side of the second observation window 102, the first observation port 101 displays the using state, and at the moment, the third rotary limiting ring b3 and the second rotary ring b2 are in a fixed state;

secondly, the button a1 is manually pressed to move downwards, in the process of moving downwards, the return spring a2 is compressed, the lifting spring a3 continues to store energy, due to inertia, the driving rod 21 continuously moves downwards until the bottom of the driving part 212 contacts with the top wall of the groove a4-11, the driving rod 21 stops moving downwards, at the moment, the blood taking needle 5 is knocked out and punctures the skin, and because the return spring a2 is in a stretching state, the lifting spring a3 is in a compression state, the driving rod 21 quickly retracts under the action of the two springs, so that the clamping protrusion 214 of the driving rod 21 is clamped with the blood taking needle 5 to drive the blood taking needle 5 to retract into the positioning cavity 410, the blood taking needle 5 is clamped in the positioning cavity 410 again, and at the moment, the return spring a2 and the lifting spring a3 are in a balance state; meanwhile, in the downward moving process of the button a1, the guide post a1-2 moves along the rotating groove b1-1, and because the rotating groove b1-1 is obliquely arranged, the first rotating ring b1 rotates forward to drive the second rotating ring b2 and the third rotating limiting ring b3 to rotate forward, and because the third rotating limiting ring b3 and the ring cylinder 417 form a ratchet and pawl mechanism through the first positioning pawl b3-3, and the second positioning pawl a4-4-2 of the driving cylinder a4 is clamped with the ring cylinder 417, the ring cylinder 417 cannot be driven to rotate when the third rotating limiting ring b3 rotates forward; then the guide post a1-2 returns along the path of downward movement when the button a1 is loosened, at this time, the first rotating ring b1, the second rotating ring b2 and the third rotating ring b3 rotate in opposite directions, and the first positioning claws b3-3 of the third rotating ring b3 drive the ring cylinder 417 to rotate, so that the blood taking needle 5 is replaced by the next unused blood taking needle;

thirdly, when the first used blood taking needle 5 is replaced, the blood taking can be pressed for use, the bottom of the lifting ring 33 is close to a carrier to be taken blood, then the button 1 is pressed, the blood taking needle 5 is knocked out to puncture the skin, then the blood taking needle is collected by using a blood collecting instrument, the blood taking needle is replaced by a new blood taking needle 5 when the button 1 returns to the original position due to loosening of the button 1, and then the next blood sample can be collected continuously;

finally, when the needle is changed along with use, the annular cylinder 417 and the transition cylinder a5 rotate simultaneously, the torsion spring a6 is twisted, after the positioning arc plate b3-1 is clamped with the positioning block a5-4-4, the transition cylinder a5 and the third rotary limiting ring b3 are clamped with each other, the transition cylinder a5 and the driving cylinder a4 are clamped with each other, and after the transition cylinder a5, the third rotary limiting ring b3 and the driving cylinder a4 are clamped in a matching manner, the annular cylinder 417 cannot rotate again at the moment, namely the blood taking needle 5 is completely used and needs to be changed; meanwhile, when the blood taking needle 5 is pulled out after being completely used, the torsion spring a6 can drive the transition cylinder a5 to reset quickly; in addition, after all the lancets 5 are used, since the transition cylinder a5 rotates once, the number 1 is displayed on the third observation window 107, and thus it is understood that the lancet 5 needs to be replaced and can be reused in time.

When the blood collection needle 5 is replaced, the operation is as follows:

firstly, pulling out a depth adjusting component d;

secondly, the multi-needle fixing component 4 with a plurality of blood taking needles 5 is pulled out, at the moment, the torsion spring a6 drives the transition cylinder a5 to rotate reversely for a circle under the action of the torsion force until the transition cylinder a5 is abutted and fixed with one end of the limiting block a4-3-1 far away from the second limiting groove a4-3-2, and the transition cylinder a returns to the original position;

thirdly, mounting the multi-needle fixing assembly 4 with a new blood taking needle 5, inserting the third positioning fixture block a5-4-3 into the groove of the ring cylinder 217, fixing the transition cylinder a5 and the ring cylinder 217, clamping the end surfaces of the second positioning claws a4-4-2 and the first positioning claws b3-3 with the groove of the ring cylinder 417, and adjusting to a proper position to finish replacement;

and then, the depth adjusting assembly 3 is clamped and fixed with the fixed cylinder 1 again to finish replacement, and the device can be used continuously. It should be noted that, when the needle is used for the first time after being replaced, the length of the needle needs to be adjusted in advance, and the needle can be used after being adjusted.

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

1. The utility model provides an automatic trade needle type many needles blood sampling pen which characterized in that: including solid fixed cylinder (1), play needle drive structure (2), degree of depth adjusting part (3) and many needles fixed subassembly (4), gu fixed cylinder (1) bottom is fixed with degree of depth adjusting part (3) joint, it installs to go out needle drive structure (2) and many needles fixed subassembly (4) gu fixed cylinder (1) is inside just go out the top of needle drive structure (2) and wear out solid fixed cylinder (1) setting, be provided with a plurality of blood taking needles (5) in many needles fixed subassembly (4), it is provided with actuating lever (21) that are used for driving blood taking needle (5) and reciprocate to be convenient for press blood taking needle (5) in order to carry out blood sampling work.

2. The automatic needle-changing type multi-needle blood sampling pen according to claim 1, characterized in that: the needle outlet driving structure (2) comprises a pressing moving component (a) and a rotary positioning component (b), and the pressing moving component (a) can drive the rotary positioning component (b) to rotate through up-down movement.

3. The automatic needle-changing type multi-needle blood sampling pen according to claim 2, characterized in that: the pressing moving assembly (a) comprises a button (a1), a return spring (a2), a driving rod (21), a lifting spring (a3), a driving cylinder (a4) and a transition cylinder (a5), wherein the driving rod (21) comprises a driving head (211) at the top and a driving part (212) at the bottom, the top end and the bottom end of the return spring (a2) are respectively clamped at the center of the top wall of the button (a1) and the top of the driving head (211), the lifting spring (a3) is sleeved on the outer side of the driving part (212), and two ends of the lifting spring (a3) are respectively located at the bottom of the driving head (211) and in a clamping groove (a4-1) in the driving cylinder (a 4);

the bottom of the button (a1) is symmetrically provided with two groups of pressing strips (a1-1), the inner wall of the bottom of each pressing strip (a1-1) is provided with a guide column (a1-2), the driving cylinder (a4) is positioned below the button (a1), the pressing strips (a1-1) are sleeved on the outer side of the driving cylinder (a4), the driving rod (21) is positioned on the inner side of the driving cylinder (a4), the outer side of the bottom of the driving cylinder (a4) is sleeved with a transition cylinder (a5), and the transition cylinder (a5) is in contact with the bottom wall of a limiting ring (a4-2) on the outer wall of the driving cylinder (a 4);

the rotary positioning assembly (b) comprises a first rotating ring (b1), a second rotating ring (b2) and a third rotary limiting ring (b3), the first rotating ring (b1), the second rotating ring (b2) and the third rotary limiting ring (b3) are coaxially arranged from top to bottom, the first rotating ring (b1) and the second rotating ring (b2) are inserted and connected for limiting and fixing, a positioning arc plate (b3-1) is arranged at the top of the third rotary limiting ring (b3), and the positioning arc plate (b3-1) is inserted into the second rotating ring (b2) and is arranged in a gap with the inner wall of the second rotating ring (b 2);

the outer wall of the first rotating ring (b1) is provided with two symmetrically-arranged rotating grooves (b1-1), guide posts (a1-2) at the bottoms of the two pressing strips (a1-1) are respectively clamped in the two rotating grooves (b1-1), the outer wall of the second rotating ring (b2) is provided with two symmetrically-arranged second rotating grooves (b2-1), the two second rotating grooves (b2-1) are opposite to the bottoms of the rotating grooves (b1-1), the outer wall of the second rotating ring (b2) is provided with two parallel sliding channels (b2-2) in the circumferential direction, the groove wall of the center position of the sliding channel (b2-2) is provided with a vertical sliding groove (b2-3), and the sliding groove (b2-3) is internally and slidably connected with a sliding block (b4), the sliding block (b4) is also connected with a sliding button (b5) in a sliding way;

the outer wall of the third rotary limiting ring (b3) is circumferentially provided with a plurality of positioning grooves (b3-2), wherein the second rotary groove (b2-1) and the sliding groove (b2-3) are respectively and correspondingly communicated with a positioning groove (b 3-2).

4. The automatic needle-changing type multi-needle blood sampling pen according to claim 3, characterized in that: a clamping block (b2-4) is arranged on the bottom wall of the sliding groove (b2-3), a second convex block (b2-5) is arranged at the bottom side end of the clamping block (b2-4), two grooves which can be clamped and fixed with the clamping block (b2-4) are arranged on the bottom wall of the sliding block (b4), the two grooves are respectively a first groove (b4-1) and a second groove (b4-2), a sliding through groove (b4-3) is arranged on the top wall of the sliding block (b4), the sliding button (b5) is an arc-shaped plate with a shifting block (b5-2) arranged on the top wall, a sliding slider (b5-1) is arranged on the bottom wall of the sliding button (b5), and the sliding slider (b5-1) is inserted into the sliding through groove (b 4-3).

5. The automatic needle-changing type multi-needle blood sampling pen according to claim 4, wherein: the transition cylinder (a5) comprises a first cylinder (a5-1), a second cylinder (a5-2), a third necking cylinder (a5-3) and a fourth cylinder (a5-4) which are integrally formed from top to bottom, the second cylinder (a5-2), the third necking cylinder (a5-3) and the fourth cylinder (a5-4) are inserted in a first rotating ring (b1) and a second rotating ring (b2), and the first cylinder (a5-1) is located between the first rotating ring (b1) and a limit ring (a 4-2); a plurality of first bumps (a5-4-1) are arranged on the inner wall of the fourth cylinder (a5-4) in the circumferential direction, a through hole (a5-4-2) is formed in one first bump (a5-4-1), and the top of the first bump is connected with a limiting vertical block (a 5-4-5); the bottom of a driving cylinder (a4) is provided with a positioning cylinder (a4-3), the bottom of the positioning cylinder (a4-3) is fixedly connected with a limiting cylinder (a4-4), the bottom of the side wall of the driving cylinder (a4) is provided with a first limiting groove (a4-5), the bottom of the positioning cylinder (a4-3) is provided with a limiting block (a4-3-1), one side of the limiting block (a4-3-1) is provided with a second limiting groove (a4-3-2) with an opening, the outer side of the limiting cylinder (a4-4) is sleeved with a torsion spring (a6), the first end of the torsion spring (a6) is clamped in the first limiting groove (a4-5), and the second end of the torsion spring (a6) is inserted in a through hole (a5-4-2) of the transition cylinder (a 5).

6. The automatic needle-changing type multi-needle blood sampling pen according to claim 5, wherein: the outer wall of the fixed barrel (1) is provided with a first observation window (101), a second observation window (102), a first positioning insertion block (103) and a second positioning groove (104), the inner wall of the fixed barrel (1) is provided with two first positioning grooves (105) and two second positioning grooves (106) which are vertically and symmetrically arranged, the first observation window (101) is arranged right opposite to the sliding button (b5), and the shifting block (b5-2) penetrates through the second observation window (102);

the pressing strip (a1-1) is arranged in the first positioning groove (105) and is connected with the first positioning groove (105) in a vertical sliding manner;

two second positioning fixture blocks (a4-6) are symmetrically arranged on the outer wall of the driving cylinder (a4), and the two second positioning fixture blocks (a4-6) are respectively clamped in the two second positioning grooves (106).

7. The automatic needle-changing type multi-needle blood sampling pen according to claim 5, wherein: the multi-needle fixing assembly (4) comprises a fixing needle cylinder (41) and an outer sleeve (42), the fixing needle cylinder (41) and the outer sleeve (42) are coaxially arranged, and the outer sleeve (42) is sleeved on the outer side of the fixing needle cylinder (41) and is clamped and connected with the fixing needle cylinder (41); the fixed needle cylinder (41) comprises a fixed column (415) and a ring cylinder (417), the fixed column (415) and the ring cylinder (417) form a plurality of positioning cavities (410) through partition plates, a plurality of blood collection needles (5) are placed in the positioning cavities (410), the bottoms of the blood collection needles (5) are provided with a first needle outlet hole (418) and a second needle outlet hole (428) in a right-facing mode, and the first needle outlet hole (418) and the second needle outlet hole (428) are respectively formed in the bottom wall of the fixed needle cylinder (41) and the bottom wall of the outer sleeve (42); the outer sleeve (42) and the fixed needle cylinder (41) are both made of elastic engineering plastics.

8. The automatic needle-changing type multi-needle blood collection pen according to claim 7, wherein: a plurality of grooves are uniformly formed in the outer wall of the ring cylinder (417) to form a quincunx shape, a sixth positioning bulge (412) and a seventh positioning bulge (413) are fixedly arranged in each two adjacent grooves respectively, and the sixth positioning bulge (412) and the seventh positioning bulge (413) are tilted outwards along the radial direction of the fixed needle cylinder (41);

a sixth positioning groove (421) and a seventh positioning groove (423) which are respectively matched and corresponding to the sixth positioning protrusion (412) and the seventh positioning protrusion (413) are arranged on the outer sleeve (42), the sixth positioning groove (421) is of a through hole structure, and the seventh positioning groove (423) is concavely arranged in the radial direction of the outer sleeve (42);

an isolation boss (426) is arranged on the inner wall of the outer sleeve (42), the isolation boss (426) is arranged below the sixth positioning groove (421), and the ring cylinder (417) is axially limited through the isolation bosses (426).

9. The automatic needle-changing type multi-needle blood sampling pen as claimed in claim 8, wherein: a second positioning claw (a4-4-2) is arranged on the limiting cylinder (a4-4), a plurality of first positioning claws (b3-3) are uniformly arranged on the inner wall of the third rotary limiting ring (b3), the second positioning claw (a4-4-2) and the first positioning claw (b3-3) are arranged corresponding to the groove in the outer wall of the ring cylinder (417), and the end face of the second positioning claw is clamped with the groove in the ring cylinder (417); and the protruding positions of the first positioning claw (b3-3) and the groove on the outer wall of the ring cylinder (417) form a ratchet-pawl mechanism, a plurality of third positioning fixture blocks (a5-4-3) are arranged on the bottom wall of the fourth cylinder (a5-4), and the third positioning fixture blocks (a5-4-3) are clamped in the groove of the ring cylinder (417).

10. The automatic needle-changing type multi-needle blood sampling pen according to claim 1, characterized in that: the depth adjusting component (3) is including last holding ring (31), drive ring (32) and lift ring (33) of coaxial setting, the below outer lane of going up holding ring (31) is equipped with spacing arch (313), the inner circle upper end of drive ring (32) is equipped with a plurality of gear adjustment arch (321), spacing arch (313) correspond the setting with gear adjustment arch (321), the lower extreme of drive ring (32) inner circle is equipped with first spiral arch (322), lift ring (33) cover is established in drive ring (32), the outer lane of lift ring (33) is equipped with helicla flute (332), establish in helicla flute (332) and two relative motion first spiral arch (322), the lower extreme of lift ring (33) is equipped with out pinhole (34).