Sampling needle assembly with puncture function and detection instrument

Abstract

The utility model belongs to the technical field of medical instrument detection, and relates to a sampling needle assembly with a puncture function. The first lifting rod is arranged on the first support and can move in a lifting mode and rotate. The first support arm is arranged at one end of the first lifting rod, the other end of the first support arm is provided with a first sampling needle, the first sampling needle is provided with a puncture needle tip and a first through groove, the first through groove is formed in the outer wall of the first sampling needle, and the axis of the first sampling needle is parallel to the axis of the first lifting rod; the first lifting rod is sleeved with the first auxiliary supporting arm, the first auxiliary supporting arm can synchronously rotate along with the first lifting rod, the first auxiliary supporting arm is parallel to the first supporting arm, and the end, provided with the needle tip, of the first sampling needle is movably arranged on the first auxiliary supporting arm in a penetrating mode. By the adoption of the structure, sampling operation can be conducted on the sampling pipe with the rubber plug, manual detection of a detector is not needed, direct contact is avoided, and the current automatic detection requirement is met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of medical instrument sample detection, especially a sampling needle assembly with puncture function and detection instrument. BACKGROUND

[0002] The full-automatic specific protein analyzer is a common instrument in the medical detection field, and is usually used for detecting various items of human sample types such as whole blood, serum, plasma, peripheral blood, urine, cerebrospinal fluid and stool dissolved liquid. Before sample detection, the sample is usually taken and placed in a sample tube, and then automatically transmitted to the detection instrument through the track of the detection instrument for detection.

[0003] At present, there are usually two kinds of sampling tubes on the market, one is with a rubber plug, and the other is an open type sample tube without a rubber plug. When the sampling tube with a rubber plug is transmitted to the detection instrument, since the existing sampling needle does not have a puncture structure, it cannot meet the demand of puncture detection sampling, and the detection personnel need to remove the rubber plug before sampling for manual detection. The detection process is very inconvenient, and when the sample is harmful to the human body, the detection personnel can also be exposed to a dangerous detection environment. Therefore, it is necessary for those skilled in the art to improve the existing sampling needle structure to meet the sampling demand of the sampling tube with a rubber plug. SUMMARY

[0004] The utility model provides a kind of sampling needle assembly with puncture function, solve the problem that current sampling needle cannot meet the sampling of the sampling tube with rubber plug in the above technical background, avoid manual direct detection operation, reduce dangerous coefficient, reduce work intensity.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A kind of sampling needle assembly with puncture function, comprising:

[0007] First support;

[0008] First lifting rod is arranged on the first support, the first lifting rod can be lifted along its own axis, and can be rotated around its own axis, a first supporting arm is provided on the free end of the first lifting rod, one end of the first supporting arm is connected with the free end of the first lifting rod, a first sampling needle is provided on the other end of the first supporting arm, the first sampling needle is provided with a puncture needle tip and a first through slot, the first through slot is arranged on the outer wall of the first sampling needle, the first through slot is provided with a predetermined length, the axis of the first sampling needle is arranged in parallel with the axis of the first lifting rod;

[0009] A first auxiliary arm is sleeved on the first lifting rod, the first auxiliary arm can rotate synchronously with the first lifting rod, and the first auxiliary arm is arranged in parallel with respect to the first arm, and one end of the first sampling needle with a needle tip is movably sleeved on the first auxiliary arm.

[0010] In some embodiments, a cleaning assembly is further included, the cleaning assembly includes a first cleaning bin movably arranged on the first auxiliary arm, the first cleaning bin is provided with a first cleaning cavity, a first liquid inlet and a first liquid outlet, the first liquid inlet and the first liquid outlet are in communication with the first cleaning cavity, the first liquid inlet is located below the first liquid outlet, the first liquid inlet is arranged eccentrically with respect to the first cleaning bin, and the liquid outlet direction of the first liquid inlet is arranged upwardly inclined with respect to the horizontal plane where the first liquid inlet is located, wherein the puncture needle tip of the first sampling needle passes through the first cleaning bin, and the first sampling needle can relatively move with respect to the first cleaning bin.

[0011] In some embodiments, the first auxiliary arm is provided with a first through fixing hole, the first cleaning bin is provided with a first fixing end and a second fixing end, the outer diameter of the first fixing end is smaller than the outer diameter of the second fixing end, the outer diameter of the first fixing end is not greater than the inner diameter of the first fixing hole, the outer diameter of the second fixing end is greater than the inner diameter of the first fixing hole, the first auxiliary arm is provided with a first annular clamping groove on the first fixing end, the first auxiliary arm is provided with a first elastic fixing block matched and detachably arranged on the first annular clamping groove, when the first elastic fixing block is clamped in the first annular clamping groove, the first elastic fixing block abuts against the first auxiliary arm, and the second fixing end abuts against the first auxiliary arm.

[0012] In some embodiments, the first cleaning bin is provided with a first sealing block, the first sealing block seals the first cleaning bin, the first sealing block is provided with a first through supporting hole, the inner diameter of the first supporting hole is matched with the outer diameter of the first sampling needle, the first supporting hole is coaxially arranged with the first sampling needle, and the first sampling needle is movably sleeved on the first supporting hole.

[0013] In some embodiments, a collision prevention mechanism arranged on the first arm is further included, the collision prevention mechanism includes a first base fixedly arranged on the first arm, a first guide column, a first limiting column and a first spring.

[0014] The first base is provided with a first guide hole matched with the first guide column, the first guide column is movably arranged in the first guide hole, the first limiting column is arranged on the first base and arranged in parallel with the first guide column, the first spring is sleeved on the first limiting column, one end of the first guide column is provided with a first limiting boss, the first limiting boss is movably arranged on the first limiting column, one end of the first spring abuts against the first limiting boss, and the other end of the first spring abuts against one end of the first limiting column.

[0015] The first guide column is provided with a first guide channel, and the puncture needle tip of the first sampling needle passes through the first guide channel.

[0016] The anti-collision mechanism further comprises a limiting photoelectric coupler and a light-sensitive baffle, the limiting photoelectric coupler is provided with a light-sensitive groove, the limiting photoelectric coupler is arranged on the first supporting arm, and the light-sensitive baffle is arranged on the first limiting boss.

[0017] In some embodiments, a first lifting assembly arranged on the first support is further included, the first lifting assembly comprises a first driving motor, a first transmission assembly and a first lifting block arranged on the support, the first lifting block is connected with the first lifting rod, the moving direction of the first lifting block is consistent with the axis direction of the first lifting rod, and the first lifting block is connected with the first driving motor through the first transmission assembly.

[0018] In some embodiments, the first transmission assembly comprises a first driving pulley, a first driven pulley, a first synchronous belt and a first limiting shaft, the first driving pulley is arranged on the output shaft of the first driving motor, the first driven pulley is rotatably arranged on the first support, the first synchronous belt is wound around the first driving pulley and the first driven pulley, the first limiting shaft is movably arranged on the first support, the axis direction of the first limiting shaft is consistent with the axis direction of the first lifting rod, the first lifting block is sleeved on the first limiting shaft, and the first lifting block is connected with the first synchronous belt.

[0019] In some embodiments, a first rotating assembly is further included, the first rotating assembly comprises a second driving motor, a second driving pulley arranged on the output end of the second driving motor, a second driven pulley, a second synchronous belt wound around the second driving pulley and the second driven pulley, and a second rotating disc, the second driven pulley is fixedly connected with the second rotating disc, and the second rotating disc is rotatably arranged on the first support.

[0020] The second driven pulley and the second rotating disc are both provided with a first channel matched with the first lifting rod, the first lifting rod is arranged in the first channel, the first lifting rod can move up and down relative to the first channel and rotate synchronously with the second driven pulley, and the rotating axis of the second rotating disc coincides with the axis of the first lifting rod.

[0021] The first lifting block is provided with a first rotating disc, the first support is provided with a third rotating disc, one end of the first limiting shaft passes through the first rotating disc and is connected to the third rotating disc, so that the first limiting shaft can rotate synchronously with the first lifting rod.

[0022] In some embodiments, the first lifting rod is provided with a first limiting boss, the first channel is provided with a first limiting groove, or the first lifting rod is provided with a first limiting groove and the first channel is provided with a first limiting boss, the length direction of the first limiting boss coincides with the axis direction of the first lifting rod, the first limiting groove is matched with the first limiting boss, the first limiting boss is clamped in the first limiting groove, and the moving distance of the first limiting boss in the first limiting groove is not less than the moving distance of the first sampling needle.

[0023] In some embodiments, a second lifting assembly and a second rotating assembly are further included, the second lifting assembly is provided with a second lifting block, and the second lifting rod is connected with the second lifting block, wherein the second lifting assembly has the same structure as the first lifting assembly, the second rotating assembly has the same structure as the first rotating assembly, and the second support arm is bent.

[0024] In some embodiments, the utility model further provides a detection instrument, which comprises:

[0025] a mounting base,

[0026] The first support is arranged on the mounting base in each of the above embodiments.

[0027] A second sampling assembly, the second sampling assembly comprises a second support, a second lifting rod arranged on the second support, a second support arm arranged at the free end of the second lifting rod, and a second sampling needle arranged at one end of the second support arm.

[0028] The second lifting rod can move up and down along its axis and rotate around its axis, and the axis of the second sampling needle is arranged in parallel with the axis of the second lifting rod, wherein the second lifting rod is arranged in parallel with the first lifting rod.

[0029] The second sampling assembly further comprises a second lifting assembly and a second rotating assembly, the second lifting assembly is provided with a second lifting block, and the second lifting rod is connected with the second lifting block, wherein the second lifting assembly is the same in structure as the first lifting assembly, the second rotating assembly is the same in structure as the first rotating assembly, and the second supporting arm is bent.

[0030] Wherein, the second sampling needle has the same rotating radius as the interval between the second cleaning bin and the axis of the second lifting rod.

[0031] Compared with the prior art, the utility model brings the beneficial effects that:

[0032] 1、The utility model discloses a first lifting rod is set up, and the first supporting arm is set up at one end of the first lifting rod, and the first sampling needle is set up at one end of the first supporting arm, and the first auxiliary supporting arm is combined with the first lifting rod, and the puncture needle tip is set up on the first sampling needle, and the first sampling needle is movably arranged on the first auxiliary supporting arm, and the first auxiliary supporting arm is combined with the auxiliary guide and support of the first sampling needle, so that the first sampling needle has the puncture capacity and can carry out puncture sampling.

[0033] 2、The utility model discloses a cleaning assembly is set up on the first auxiliary supporting arm, and the cleaning assembly comprises a first cleaning bin, and the first liquid inlet and the first liquid outlet are arranged on the first cleaning bin, wherein the first liquid inlet is located below the first liquid outlet, so that the outer wall of the first sampling needle is completely soaked, and the cleaning is in place, and simultaneously, the first liquid inlet is eccentrically arranged relative to the first cleaning bin, and the liquid outlet direction of the first liquid outlet is upwardly inclined, so that the cleaning liquid is in the first cleaning bin in the spiral shape, the cleaning of the first sampling needle is facilitated, and the cleaning liquid is prevented from flowing out from below the first cleaning bin, and environmental pollution caused by the dripping of the sewage after cleaning is avoided.

[0034] Additional aspects and advantages of the application will be set forth in part in the following description, and will in part be apparent from the description, or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a perspective view of the sampling needle assembly and the transmission assembly of the second sampling needle of the utility model with puncture function.

[0036] Figure 2 It is an exploded view of the structure of the first cleaning bin of the utility model.

[0037] Figure 3 It is a sectional view of the internal structure of the first cleaning bin of the utility model.

[0038] Figure 4 Assembled perspective view of the anti-collision mechanism of the utility model;

[0039] Figure 5 Assembled perspective view of the anti-collision mechanism of the utility model;

[0040] Figure 6 Internal structure sectional view of the anti-collision mechanism of the utility model;

[0041] Figure 7 First schematic view of the transmission structure of the first lifting rod of the utility model;

[0042] Figure 8 Second schematic view of the transmission structure of the first lifting rod of the utility model;

[0043] Figure 9 Rotation structure sectional view of the first lifting rod of the utility model;

[0044] Figure 10 Schematic view of another transmission mode of the transmission structure of the first lifting rod of the utility model. DETAILED DESCRIPTION

[0045] The application will be described in further detail below with reference to the accompanying drawings. In the description of the embodiments, unless otherwise specified, the terms "left", "right", and the like indicate the orientation or positional relationship shown in the drawings, and are merely intended to facilitate the description of the application and simplify the description, and therefore cannot be understood as indicating or implying that the application must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0046] As Figure 1The utility model provides a kind of double sample arm sampling mechanism, mainly including first support 100, first lifting rod 101 is arranged on first support 100, the free end of first lifting rod 101 is equipped with first branch arm 102, one end of first branch arm 102 is connected with the free end of first lifting rod 101, first sampling needle 103 is arranged at the other end of first branch arm 102, the axis of first sampling needle 103 is consistent with the axial direction of first lifting rod 101, puncture needle tip 1031 is arranged at the end of first sampling needle 103 away from first branch arm 102, and puncture needle tip 1031 is used to puncture sampling tube with rubber plug;Further, to ensure that sampling tube internal and external air pressure is balanced during puncture sampling, first through slot 1032 is arranged on the outer wall of first sampling needle 103, when first sampling needle 103 puncture sampling, first through slot 1032 is connected with sampling tube and outside, so that air pressure is balanced, resistance is reduced, and sampling is smooth.Further, first auxiliary branch arm 104 is sleeved on first lifting rod 102, first auxiliary branch arm 104 can be synchronously rotated with first lifting rod 101, and first lifting rod 101 can be moved relative to first auxiliary branch arm 104 along its axis direction, first auxiliary branch arm 104 is equipped with preset interval between first branch arm 102, when first lifting rod 101 rises to limit position, puncture needle tip 1031 of first sampling needle 103 is just located at first auxiliary branch arm 104;

[0047] Further, as Figure 2 And Figure 3As shown, the cleaning assembly is arranged on the first auxiliary supporting arm 104, so that the cleaning of the first sampling needle 103 does not need to use a fixed-position cleaning tank for cleaning, and meanwhile, the positioning between the first cleaning needle 103 and the cleaning tank can be avoided, the cleaning process is simplified, the cleaning time is shortened, and the sampling efficiency is improved. Specifically, the cleaning assembly comprises a first cleaning bin 1041 arranged on the first auxiliary supporting arm 104, the first cleaning bin 1041 is provided with a first cleaning cavity 104121, a first liquid inlet 104122 and a first liquid outlet 104123 are arranged on the side wall of the first cleaning bin 10411, the first liquid inlet 104122 and the first liquid outlet 104123 are in communication with the first cleaning cavity 104121, the first liquid inlet 104122 is used for input of the cleaning liquid, and the first liquid outlet 104123 is used for discharge of the waste liquid. Wherein, the first liquid inlet 104122 and the first liquid outlet 104123 are provided with a height difference, and the first liquid inlet 104122 is located below the first liquid outlet 104123, at the same time, the first liquid inlet 104122 is arranged eccentrically relative to the first cleaning bin 104121, at the same time, the liquid outlet direction of the first liquid inlet 104122 is inclined upward relative to the horizontal plane where the first liquid inlet 104122 is located, the first sampling needle 103 is movably arranged in the first cleaning bin 104121, and the part of the first sampling needle 103 immersed in the sample tube during liquid taking can be completely located in the first cleaning bin 104121, so as to ensure that the cleaning is in place. It should be pointed out that when the first lifting rod 101 is in the limit position, the part of the first sampling needle 103 which needs to be cleaned is located in the first cleaning cavity 104121;

[0048] In the embodiment, by arranging the first liquid inlet 104122 below the first liquid outlet 104123, it is ensured that the first sampling needle 103 can be completely immersed, at the same time, by arranging the first liquid inlet 104122 eccentrically, the cleaning liquid in the first cleaning cavity 104121 is in a spiral shape, the first sampling needle 103 is immersed and cleaned in place, the first sampling needle 103 is continuously stirred and cleaned, and the liquid outlet direction of the first liquid inlet 104123 is inclined upward, so that the cleaning liquid flows out from bottom to top, the pollution of the sample or the reagent is effectively avoided, at the same time, the cleanliness of the detection instrument can be ensured, and the sample is prevented from dropping on the detection instrument.

[0049] The utility model discloses a first sampling needle 103 and ordinary sampling second sampling needle 203 with puncture function are set up, and the sampling tube with rubber stopper and open type sampling tube can be selectively sampled, and the sampling demand of different structure sample tube is met.

[0050] In one embodiment, as shown in Figure 3 In order to facilitate the detachable connection of the first cleaning bin 1041 relative to the first auxiliary supporting arm 104, the first cleaning bin 1041 can be cleaned, and the assembly of the first cleaning bin 1041 is facilitated, a through first fixing hole 1042 is arranged on the first auxiliary supporting arm 104, the first cleaning bin 1041 comprises a first fixed end 10411 and a second fixed end 10412, wherein the outer diameter of the first fixed end 10411 is less than or equal to the inner diameter of the first fixing hole 1042, in the embodiment, the inner diameter of the first fixing hole 1042 is adapted to the outer diameter of the first fixed end 10411, so that the first fixed end 10411 is prevented from shaking relative to the first auxiliary supporting arm 104. The outer diameter of the second fixed end 10412 is greater than the inner diameter of the first fixing hole 1043, and the outer diameter of the second fixed end 10412 is greater than the outer diameter of the first fixed end 10411, wherein a first annular clamping groove 104112 is arranged on the first fixed end 10411, a first elastic fixing block 10413 adapted to the groove width is arranged on the first annular clamping groove 104112, in the embodiment, the first elastic fixing block 10413 is a C-shaped structure, for example, the first elastic fixing block 10413 can be composed of elastic steel sheet or elastic plastic plate, when the first elastic fixing block 10413 is clamped on the first annular clamping groove 104112, the first elastic fixing block 10413 abuts against the first annular clamping groove 104112, the first elastic fixing block 10413 abuts against the upper end surface of the first auxiliary supporting arm 104, the second fixed end 10412 abuts against the lower end surface of the first auxiliary supporting arm 104, that is, the distance between the first elastic fixing block 10413 and the second fixed end 10412 is consistent with the thickness of the first auxiliary supporting arm 104 at the first fixing hole 1042, so that the first cleaning bin 1041 is axially limited and radially limited. Optionally, the first elastic fixing block 10413 can also be a U-shaped structure.

[0051] Further, in order to facilitate the assembly between the first cleaning bin 1041 and the first sampling needle 103, the first cleaning bin 1041 is provided with a first sealing block 104111, which seals the first cleaning bin 1041 to form a sealed first cleaning cavity 104121. A through first supporting hole is arranged on the first sealing block 104111, the inner diameter of the first supporting hole is matched with the outer diameter of the first sampling needle 103, the first supporting hole is coaxially arranged with the first sampling needle 103, and the first sampling needle 103 is movably arranged in the first supporting hole. In this embodiment, the first sealing block 104111 is a cylindrical strip structure, thereby increasing the contact surface between the first sampling needle 103 and the first sealing block 104111 and providing stable support. Preferably, a rubber material is arranged at the contact position between the first sealing block 104111 and the first sampling needle 103, which can not only ensure sealing but also facilitate the movement of the first sampling needle 103 relative to the first cleaning bin 1041.

[0052] In one embodiment, as shown in Figures 4-6 The anti-collision mechanism is mainly used to avoid the damage of the first sampling needle 103 due to inaccurate puncture position of the first sampling needle 103. Specifically, the anti-collision mechanism includes a first base 10211, a first guide column 10216, a first limiting column 10213 and a first spring 10214. The first base 10211 is fixedly arranged on the first supporting arm 102, and a first guide hole 102111 matched with the first guide column 10216 is arranged on the first base 10211. The first guide column 10216 is movably arranged in the first guide hole 102111. The first limiting column 10213 is arranged on the first base 10211 and is arranged in parallel with the first guide column 10216. The first spring 10214 is sleeved on the first limiting column 10213. One end of the first spring 10214 abuts against one end of the first limiting column 10213. A first limiting boss 10212 is arranged on one end of the first guide column 10216. The first limiting boss 10212 can abut against the first base 10211 and is sleeved on the first limiting column 10213. The other end of the first spring 10214 abuts against the first limiting boss 10212. In this embodiment, the first limiting column 10213 is two, which can effectively limit the first limiting boss 10212 to move linearly;

[0053] A first guide channel is arranged on the first guide column 10216, and part of the first sampling needle 103 is arranged in the first guide channel. The first sampling needle 103 is fixedly arranged relative to the first guide column 10216, and the first guide column 10216 is coaxially arranged with the first sampling needle 103.

[0054] The anti-collision mechanism further comprises a limiting photo-coupler 10217 and a light-sensitive baffle 10215. The limiting photo-coupler 10217 is arranged on the first supporting arm 102, and is provided with a light-sensitive groove. The light-sensitive baffle 10215 is arranged on the first limiting boss 10212. In the initial position, the light-sensitive baffle 10215 is located in the light-sensitive groove. When the first sampling needle 103 fails to puncture, the first sampling needle 103 is lifted, driving the first guide column 10213 to move axially, and at the same time, the first spring 10214 is compressed. When the light-sensitive baffle 10215 is separated from the light-sensitive groove, the first guide column 10216 stops moving upward, and the first sampling needle stops moving upward. At this time, the first lifting rod 101 moves upward, and the first sampling needle 103 is reset under the action of the first spring, and the first sampling needle 103 repositions to puncture and sample. It should be particularly pointed out that the resistance of the rubber plug to the first sampling needle is much smaller than the elastic force of the first spring 10214 applied to the first sampling needle 103, so that the first sampling needle 103 can smoothly puncture and sample.

[0055] In one embodiment, a first lifting assembly arranged on the first support 100 is further included, as shown in Figure 7 and Figure 8 The first lifting assembly comprises a first driving motor 401, a first transmission assembly and a first lifting block 405 arranged on the first support 100. The first lifting block 405 is connected with the first lifting rod 101, and the moving direction of the first lifting block 405 is consistent with the axial direction of the first lifting rod 101. The first lifting block 405 is connected with the first driving motor 401 through the first transmission assembly.

[0056] Specifically, as shown in Figure 8 The first transmission assembly comprises a first driving pulley 402, a first driven pulley 404, a first synchronous belt 403 and a first limiting shaft 407. The first driving pulley 402 is arranged on the output shaft of the first driving motor 401. The first driven pulley 404 is rotatably arranged on the first support 100. The first synchronous belt 403 is wound around the first driving pulley 402 and the first driven pulley 404. The first limiting shaft 407 is rotatably arranged on the first support 100, and the axial direction of the first limiting shaft 407 is consistent with the axial direction of the first lifting rod 101. The first lifting block 405 is sleeved on the first limiting shaft 407 and connected with the first synchronous belt 403.

[0057] Optionally, the synchronous belt and synchronous pulley structure can be replaced by a screw and nut structure, as shown in Figure 10 A first screw 120 is rotatably arranged on the first support 100, and a first nut 121 adapted thereto is arranged on the first screw 120. The first nut 121 is connected with the first lifting block 405, and the first lifting block 405 and the first lifting rod 101 are rotatably connected. In cooperation with the self-limiting of the first lifting rod 101 itself, only axial movement can be achieved, and the axial movement of the first lifting rod 101 can also be achieved.

[0058] Furthermore, it also includes a first rotating assembly, which includes a second drive motor 301, a second driving pulley 302 disposed at the output end of the second drive motor 301, a second driven pulley 304, a second synchronous belt 303 wound around the second driving pulley 302 and the second driven pulley 304, and a second rotating disk 111. The second driven pulley 304 is fixedly connected to the second rotating disk 111, and the second rotating disk 111 is rotatably disposed on the first bracket 100.

[0059] The second driven pulley 304 and the second rotating disk 111 are both provided with a first channel adapted to the first lifting rod 101. The first lifting rod 101 passes through the first channel and can move up and down relative to the first channel and rotate synchronously with the second driven pulley 204. The rotation axis of the second rotating disk 111 coincides with the axis of the first lifting rod 101.

[0060] The first lifting block 405 is provided with a first rotating disk 406, and the first bracket 100 is provided with a third rotating disk 110. One end of the first limiting shaft 407 passes through the first rotating disk 406 and is connected to the third rotating disk 110, so that the first limiting shaft 407 can rotate synchronously with the first lifting rod 101. In this embodiment, the first rotating disk 406, the second rotating disk 111, and the third rotating disk 110 are all connected to the first bracket 100 by ball bearings to reduce friction during rotation. Optionally, the first rotating disk 406, the second rotating disk 111, and the third rotating disk 110 can also be rotatably connected to the first bracket 100 by an annular protrusion and an annular groove structure.

[0061] In one embodiment, such as Figure 9 As shown, in order to enable the first lifting rod 101 to reciprocate relative to the second driven pulley 304 in the axial direction and to rotate with the second driven pulley 304, a first limiting groove 1011 is provided in the first channel, and a first limiting boss 1043 is provided on the first lifting rod 101. The length direction of the first limiting boss 1043 is consistent with the axis of the first lifting rod 101. The first limiting groove 1011 and the first limiting boss 1043 are adapted in shape, and the first limiting boss 1043 is engaged in the first limiting groove 1011. The distance that the first limiting boss 1043 moves in the first limiting groove 1011 is not less than the moving distance required for the first sampling needle 103 to sample, thereby ensuring that the first limiting boss 1043 will not disengage from the first limiting groove 1011.

[0062] Optionally, a first limiting groove 1011 can be arranged on the first lifting rod 101, and a first limiting boss 1043 can be arranged in the first channel.

[0063] Optionally, an elastic rubber member can be arranged in the first channel to increase the friction between the first channel and the first lifting rod 101, so that the first lifting rod 101 can synchronously rotate with the second driven pulley 304.

[0064] Further, in order to avoid overtravel of the first lifting assembly, a light coupling for two limit positions of movement of the first lifting block 405 is arranged on the first support 100, and a first light blocking piece is arranged on the first lifting block 405 and moves between the two limit positions of the light coupling.

[0065] A second light blocking piece for synchronous rotation is arranged on the second driven pulley 304, and two light couplings for limit positions of rotation of the first lifting rod 101 are arranged on the first support 100, and the second light blocking piece rotates between the two light couplings to avoid overtravel of the first lifting rod 101.

[0066] In an embodiment, the utility model also provides a second lifting assembly for lifting movement of the second lifting rod 201 and a second rotating assembly for rotation of the second lifting rod 201, the second lifting assembly is provided with a second lifting block, and one end of the second lifting rod 201 is connected with the second lifting block.

[0067] In an embodiment, the utility model also provides a detection instrument, which comprises a mounting base,

[0068] The mounting base is provided with a first support and a second support, the first support is provided with a first lifting rod, and the second support is provided with a second lifting rod.

[0069] The second support is provided with a second lifting rod, a second support arm and a second sampling needle.

[0070] The second lifting rod 201 can be lifted along the axis thereof and can rotate around the axis thereof, and the axis of the second sampling needle 203 is arranged in parallel with the axis of the second lifting rod 201, wherein the second lifting rod 201 is arranged in parallel with the first lifting rod 101.

[0071] The second sampling assembly further comprises a second lifting assembly and a second rotating assembly, the second lifting assembly is provided with a second lifting block, and the second lifting rod 201 is connected with the second lifting block, wherein the second lifting assembly is the same in structure as the first lifting assembly, the second rotating assembly is the same in structure as the first rotating assembly, and details are not repeated here. Due to the compact structure, in order to make room for processing, the second supporting arm 202 is subjected to bending processing, so that the second sampling needle 203 can not touch the first lifting rod 101 when sample loading is performed.

[0072] In addition, a second cleaning bin is arranged on the mounting base, the rotating radius of the second sampling needle 203 is the same as the spacing between the second cleaning bin and the axis of the second lifting rod, so that the second sampling needle can be cleaned under the adjustment of rotating and lifting movement.

[0073] The above is only the preferred embodiment of the present application, and it should be pointed out that, for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made. These improvements and refinements should also be considered within the scope of protection of the present application.

Claims

1. A sampling needle assembly with a puncture function, characterized by comprising: The utility model relates to a first support, a first lifting rod arranged on the first support, the first lifting rod can lift along the axis of itself and can rotate around the axis of itself, a first supporting arm is arranged on the free end of the first lifting rod, one end of the first supporting arm is connected with the free end of the first lifting rod, the other end of the first supporting arm is provided with a first sampling needle, the first sampling needle is provided with a puncture needle tip and a first through slot, the first through slot is arranged on the outer wall of the first sampling needle, the first through slot is provided with a preset length, the axis of the first sampling needle is arranged in parallel with the axis of the first lifting rod, a first auxiliary supporting arm is sleeved on the first lifting rod, the first auxiliary supporting arm can rotate synchronously with the first lifting rod, and the first auxiliary supporting arm is arranged in parallel with the first supporting arm, one end of the first sampling needle provided with the needle tip is movably arranged on the first auxiliary supporting arm. The utility model further includes a cleaning assembly, the cleaning assembly includes a first cleaning bin which is detachably arranged on the first auxiliary supporting arm, the first cleaning bin is provided with a first cleaning cavity, a first liquid inlet and a first liquid outlet, the first liquid inlet and the first liquid outlet are communicated with the first cleaning cavity, the first liquid inlet is located below the first liquid outlet, the first liquid inlet is eccentrically arranged relative to the first cleaning bin, and the liquid outlet direction of the first liquid inlet is upwardly inclined relative to the horizontal plane where the first liquid inlet is located, wherein the puncture needle tip of the first sampling needle penetrates through the first cleaning bin, and the first sampling needle can relatively move relative to the first cleaning bin. The first auxiliary supporting arm is provided with a first fixing hole penetrating through, the first cleaning bin is provided with a first fixing end and a second fixing end, the outer diameter of the first fixing end is smaller than the outer diameter of the second fixing end, the outer diameter of the first fixing end is not greater than the inner diameter of the first fixing hole, the outer diameter of the second fixing end is greater than the inner diameter of the first fixing hole, a first annular clamping groove is arranged on the first fixing end, a first elastic fixing block which is matched and detachable is arranged on the first annular clamping groove, when the first elastic fixing block is clamped in the first annular clamping groove, the first elastic fixing block abuts against the first auxiliary supporting arm, and the second fixing end abuts against the first auxiliary supporting arm. The first cleaning bin is provided with a first sealing block, the first sealing block seals the first cleaning bin, the first sealing block is provided with a first supporting hole penetrating through, the inner diameter of the first supporting hole is matched with the outer diameter of the first sampling needle, the first supporting hole is coaxially arranged with the first sampling needle, and the first sampling needle is movably arranged in the first supporting hole.

2. The lancing needle assembly of claim 1, wherein the needle assembly further comprises a needle guard. The utility model further includes an anti-collision mechanism arranged on the first supporting arm, the anti-collision mechanism includes a first base fixedly arranged on the first supporting arm, a first guide column, a first limiting column and a first spring.

3. The lancing needle assembly of claim 2, wherein the needle is configured to pierce the skin of the patient. ​ 4. The lancing needle assembly of claim 3, wherein the needle is configured to pierce the skin of the patient. ​ 5. The lancing needle assembly of claim 1, wherein the needle assembly further comprises a needle guard. ​ The first base is provided with a first guide hole matched with the first guide column, the first guide column is movably arranged in the first guide hole, the first limiting column is arranged on the first base and arranged in parallel with the first guide column, the first spring is sleeved on the first limiting column, one end of the first guide column is provided with a first limiting boss, the first limiting boss is movably arranged on the first limiting column, one end of the first spring abuts against the first limiting boss, and the other end of the first spring abuts against one end of the first limiting column. The first guide column is provided with a first guide channel, and the puncture needle tip of the first sampling needle passes through the first guide channel; the first sampling needle is fixedly arranged on the first guide column; and the first guide column is coaxially arranged with the first sampling needle. The anti-collision mechanism further comprises a limiting photoelectric coupler and a photosensitive baffle, the limiting photoelectric coupler is provided with a photosensitive groove, the limiting photoelectric coupler is arranged on the first supporting arm, and the photosensitive baffle is arranged on the first limiting boss.

6. The lancing needle assembly of claim 1, wherein the needle assembly further comprises a needle guard. The first lifting assembly arranged on the first support further comprises a first driving motor, a first transmission assembly and a first lifting block arranged on the support, the first lifting block is connected with the first lifting rod, the moving direction of the first lifting block is consistent with the axis direction of the first lifting rod, and the first lifting block is connected with the first driving motor through the first transmission assembly.

7. The lancing needle assembly of claim 6, wherein the needle is configured to pierce the skin of the patient. The first transmission assembly comprises a first driving pulley, a first driven pulley, a first synchronous belt and a first limiting shaft, the first driving pulley is arranged on the output shaft of the first driving motor, the first driven pulley is rotationally arranged on the first support, the first synchronous belt is arranged around the first driving pulley and the first driven pulley, the first limiting shaft is movably arranged on the first support, the axis of the first limiting shaft is consistent with the axis direction of the first lifting rod, the first lifting block is sleeved on the first limiting shaft, and the first lifting block is connected with the first synchronous belt.

8. The lancing needle assembly of claim 7, wherein the needle is configured to pierce the skin of the patient. The first rotating assembly further comprises a second driving motor, a second driving pulley arranged on the output end of the second driving motor, a second driven pulley, a second synchronous belt arranged around the second driving pulley and the second driven pulley, and a second rotating disc, the second driven pulley is fixedly connected with the second rotating disc, and the second rotating disc is rotationally arranged on the first support. The second driven pulley and the second rotating disc are both provided with a first channel matched with the first lifting rod, the first lifting rod is movably arranged in the first channel, the first lifting rod can move up and down relative to the first channel and synchronously rotate with the second driven pulley, and the rotating axis of the second rotating disc coincides with the axis of the first lifting rod. The first lifting block is provided with a first rotating disc, the first support is provided with a third rotating disc, one end of the first limiting shaft passes through the first rotating disc and is connected to the third rotating disc, and the other end of the first limiting shaft is connected to the second rotating disc, so that the first limiting shaft can rotate synchronously with the first lifting rod.

9. The lancing needle assembly of claim 8, wherein the needle is configured to pierce the skin of the patient. The first lifting rod is provided with a first limiting boss, the first channel is provided with a first limiting groove, or the first lifting rod is provided with a first limiting groove, and the first channel is provided with a first limiting boss, the length direction of the first limiting boss is consistent with the axis direction of the first lifting rod, the first limiting groove is matched with the first limiting boss, the first limiting boss is clamped in the first limiting groove, and the moving distance of the first limiting boss in the first limiting groove is not less than the moving distance of the first sampling needle.

10. A detection instrument characterized in that, The sampling needle assembly with a puncture function comprises: a mounting base, the sampling needle assembly with a puncture function according to any one of claims 1-9, wherein the first support is arranged on the mounting base; a second sampling assembly, the second sampling assembly comprising a second support, a second lifting rod arranged on the second support, a second supporting arm arranged at a free end of the second lifting rod, and a second sampling needle arranged at one end of the second supporting arm; the second lifting rod can be lifted along the axis thereof and can rotate around the axis thereof, and the axis of the second sampling needle is arranged in parallel with the axis of the second lifting rod, wherein the second lifting rod is arranged in parallel with the first lifting rod; the second sampling assembly further comprises a second lifting assembly and a second rotating assembly, the second lifting assembly is provided with a second lifting block, and the second lifting rod is connected with the second lifting block, wherein the second lifting assembly has the same structure as the first lifting assembly, and the second rotating assembly has the same structure as the first rotating assembly, wherein the second supporting arm is bent; wherein a second cleaning bin is arranged on the mounting base, and the rotating radius of the second sampling needle is the same as the distance between the second cleaning bin and the axis of the second lifting rod.

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