Puncture sampling device and sheet pushing machine

Abstract

The utility model discloses a puncture sampling device and a sheet pushing machine, and relates to the technical field of medical instruments. The puncture sampling device comprises a mounting mechanism, a driving mechanism, a sliding seat and a puncture mechanism, the mounting mechanism comprises a driving mounting seat and a puncture sampling base, and the driving mounting seat is connected to one end of the puncture sampling base and used for mounting the driving mechanism. The driving mechanism comprises a driving motor and a transmission assembly, the transmission assembly comprises a lead screw and a lead screw nut, the driving motor is fixed to the driving mounting base, a connecting structure is arranged at the end, close to the driving motor, of the lead screw, a spindle of the driving motor is connected with the lead screw through the connecting structure, and the end, away from the driving motor, of the lead screw is rotationally connected with the puncture sampling base. The lead screw is in transmission connection with the lead screw nut. The sliding seat is slidably arranged on the puncture sampling base, and one end of the sliding seat is connected with the lead screw nut. The puncturing mechanism is connected with the other end of the sliding base. Compared with an integrated stepping screw motor, the puncture sampling device has the advantages that the cost is reduced while the precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a puncture sampling device and a film pusher. Background Art

[0002] In the diagnosis and treatment of diseases, the sample is spread on the glass slide through the push operation to form a smear, and then the smear is stained to complete the preparation. Finally, the prepared sample is tested to obtain the test results, which provides a reference for the doctor's diagnosis of the disease. Before the push operation, the sample is generally placed in a test tube, and then the opening of the test tube is covered with a test tube cap. When the push operation is required, the sample in the test tube needs to be collected first, and then the sample is added to the glass slide. Generally, the test tube cap is punctured by a puncture sampling needle, and the sample in the test tube is collected, and then the sample is extracted from the puncture sampling needle to the sample adding needle through the pipeline, and finally the sample is added to the glass slide through the sample adding needle.

[0003] In the prior art, in order to improve the accuracy of the puncture sampling device, the driving mechanism of the puncture sampling device on the film pusher adopts an integrated stepping screw motor, and the mounting mechanism of the stepping screw motor is processed into one piece, which has a complex processing structure and high cost. Utility Model Content

[0004] The utility model aims to provide a puncture sampling device and a film pusher, so as to simplify the processing structure of the puncture sampling device and reduce the cost of the film pusher.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The puncture sampling device comprises:

[0007] The mounting mechanism comprises a driving mounting seat and a puncture sampling base, wherein the driving mounting seat is connected to one end of the puncture sampling base;

[0008] The driving mechanism comprises a driving motor and a transmission assembly, wherein the transmission assembly comprises a lead screw and a lead screw nut, wherein the driving motor is fixed to the driving mounting seat, a connecting structure is arranged at one end of the lead screw close to the driving motor, a main shaft of the driving motor is connected to the lead screw through the connecting structure, and one end of the lead screw away from the driving motor is rotatably connected to the puncture sampling base; the lead screw is drivingly connected to the lead screw nut;

[0009] A slide seat, wherein the slide seat is slidably disposed on the puncture sampling base, and one end of the slide seat is connected to the lead screw nut;

[0010] A puncture mechanism is connected to the other end of the slide.

[0011] As an optional solution of the puncture sampling device, a positioning recess is provided on one side of the drive mounting seat close to the puncture sampling base, and a positioning protrusion is provided on one end of the puncture sampling base close to the drive mounting seat, and the positioning protrusion cooperates with the positioning recess for positioning;

[0012] The positioning recess includes a positioning bottom surface, a first positioning side surface and a second positioning side surface, the first positioning side surface and the second positioning side surface are vertically arranged and respectively arranged on the adjacent two sides of the positioning bottom surface; the positioning protrusion includes a positioning top surface, a third positioning side surface and a fourth positioning side surface, the third positioning side surface and the fourth positioning side surface are vertically arranged and respectively located on the adjacent two sides of the positioning top surface, the positioning top surface cooperates with the positioning bottom surface, the first positioning side surface cooperates with the third positioning side surface, and the second positioning side surface cooperates with the fourth positioning side surface.

[0013] As an optional solution for the puncture sampling device, a guide rail is provided on the puncture sampling base, the guide rail is arranged parallel to the screw, and the slide is slidably arranged on the guide rail; two limit blocks are provided on the puncture sampling base, the two limit blocks are arranged at intervals along the length direction of the puncture sampling base, and the two limit blocks are used to position the guide rail.

[0014] As an optional solution of the puncture sampling device, the puncture sampling device also includes a cleaning swab and a cleaning swab mounting seat, the cleaning swab mounting seat is connected to the end of the puncture sampling base away from the driving mounting seat, the cleaning swab is mounted on the cleaning swab mounting seat, the puncture mechanism includes a puncture sampling needle, and the cleaning swab is arranged opposite to the puncture sampling needle so that the driving mechanism drives the puncture sampling needle to pass through the cleaning swab.

[0015] As an optional solution of the puncture sampling device, a positioning step is provided at one end of the puncture sampling base close to the cleaning swab mounting seat, and a positioning notch that cooperates with the positioning step is provided on the cleaning swab mounting seat;

[0016] The positioning step includes a positioning support surface, a positioning leaning surface and a fifth positioning side surface, the positioning leaning surface and the fifth positioning side surface are both perpendicular to the positioning support surface, and the positioning leaning surface and the fifth positioning side surface are respectively located on two adjacent sides of the positioning support surface; the positioning notch includes a first positioning notch side wall, a second positioning notch side wall and a positioning notch end face, the first positioning notch side wall and the second positioning notch side wall are perpendicular, and the positioning notch end face is perpendicular to both the first positioning notch side wall and the second positioning notch side wall; the positioning support surface cooperates with the first positioning notch side wall, the positioning leaning surface cooperates with the positioning notch end face, and the fifth positioning side surface cooperates with the second positioning notch side wall.

[0017] As an optional solution of the puncture sampling device, the cleaning swab mounting seat is provided with a mounting hole and a limiting structure, and the limiting structure is located in the circumference of the mounting hole;

[0018] The cleaning swab includes a cleaning cavity, an upper cavity, a middle cavity and a base, the middle cavity is arranged between the base and the upper cavity, the cleaning cavity passes through the upper cavity, the middle cavity and the base, the upper cavity protrudes from the middle cavity, the upper cavity is fixed in the mounting hole, and the limiting structure cooperates with the outer periphery of the middle cavity to limit the rotation of the cleaning swab.

[0019] As an optional solution of the puncture sampling device, the puncture mechanism also includes a puncture pipeline guide plate, the puncture sampling needle is arranged on the puncture pipeline guide plate, and the puncture pipeline guide plate is connected to the slide seat; the puncture pipeline guide plate is used to provide guidance for the pipeline connected to the puncture sampling needle;

[0020] And / or, the cleaning swab also includes a pipe joint, which is arranged in the circumference of the middle cavity and is connected to the cleaning cavity, and the pipe joint is used to connect the cleaning liquid delivery pipeline; the cleaning swab mounting seat is also provided with a cleaning pipeline guide plate, and the cleaning pipeline guide plate is used to provide guidance for the cleaning liquid delivery pipeline.

[0021] As an optional scheme of the puncture sampling device, the puncture sampling device also includes a reset detection optocoupler and a sampling needle in position detection optocoupler, the reset detection optocoupler is arranged at one end of the puncture sampling base close to the drive mounting seat, and the sampling needle in position detection optocoupler is arranged at one end of the puncture sampling base away from the drive mounting seat, and a detection feature plate is arranged on the slide seat, and when the detection feature plate is opposite to the reset detection optocoupler, the reset detection optocoupler sends a feedback signal; when the detection feature plate is opposite to the sampling needle in position detection optocoupler, the sampling needle in position detection optocoupler sends a feedback signal.

[0022] As an optional solution for the puncture sampling device, a positioning pin and a fixing hole are provided on the puncture sampling base, and the positioning pin is used to position the puncture sampling device; the fixing hole is set as a gourd hole, and a first fastening screw is used to fix the puncture sampling base through the small hole of the gourd hole. Moving the puncture sampling base can move the first fastening screw to the large hole of the gourd hole to disassemble the puncture sampling device.

[0023] A tablet pusher, comprising the puncture sampling device as described in any of the above schemes.

[0024] Beneficial effects of the utility model:

[0025] The puncture sampling device provided by the utility model includes a mounting mechanism, a driving mechanism, a sliding seat and a puncture mechanism. The mounting mechanism includes a driving mounting seat and a puncture sampling base that are separately arranged, which reduces the processing difficulty of the mounting mechanism. The driving mounting seat is connected to one end of the puncture sampling base for installing the driving mechanism. The driving mechanism includes a driving motor and a transmission assembly, and the transmission assembly includes a lead screw and a lead screw nut. The driving motor is installed on the driving mounting seat. The lead screw is connected to the driving motor through a connecting structure. The lead screw nut is connected to the lead screw transmission. The driving motor drives the lead screw to rotate, and the lead screw drives the lead screw nut to perform linear motion. Compared with the integrated stepping screw motor in the prior art, the cost is reduced. The lead screw nut and the puncture mechanism are connected by a sliding seat that is slidably arranged on the puncture sampling base, so that the driving mechanism can drive the puncture mechanism to perform puncture and collect samples, thereby improving the accuracy of the puncture sampling device. The puncture sampling device reduces the cost while improving the accuracy.

[0026] The film pusher provided by the utility model comprises the above-mentioned puncture sampling device, which improves the sample collection accuracy and reduces the cost at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the puncture sampling device provided in a specific embodiment of the utility model;

[0028] Figure 2 It is an exploded view of the puncture sampling device provided in a specific embodiment of the utility model;

[0029] Figure 3 It is a bottom view of the mounting mechanism provided by the specific implementation mode of the utility model;

[0030] Figure 4 It is a cross-sectional view of the inclined swab mounting seat and the cleaning swab after being assembled provided by a specific embodiment of the utility model;

[0031] Figure 5 It is an exploded view of the installation mechanism provided by the specific implementation mode of the utility model;

[0032] Figure 6 It is a structural schematic diagram of a drive mounting seat provided in a specific embodiment of the utility model;

[0033] Figure 7 It is a structural schematic diagram of the puncture sampling base provided in a specific embodiment of the utility model;

[0034] Figure 8 It is a schematic diagram of the assembly structure of a cleaning swab mounting base and a cleaning swab provided in a specific embodiment of the utility model.

[0035] In the figure:

[0036] 1. Installation mechanism; 11. Drive mounting seat; 111. Positioning bottom surface; 112. First positioning side surface; 113. Second positioning side surface; 114. Perforation; 12. Puncture sampling base; 120. Positioning pin; 121. Guide rail; 122. Positioning top surface; 123. Third positioning side surface; 124. Fourth positioning side surface; 125. Limit block; 126. Positioning support surface; 127. Positioning leaning surface; 128. Fifth positioning side surface; 129. Gourd hole; 13. Cleaning swab mounting seat; 131. First positioning notch side wall; 132. Second positioning notch side wall; 133. Positioning notch end surface; 134. Mounting hole; 135. Limit pin; 136. Bearing; 137. Positioning column; 14. Optocoupler mounting plate; 15. Baffle;

[0037] 2. driving mechanism; 21. driving motor; 22. lead screw; 23. lead screw nut;

[0038] 3. Sliding seat;

[0039] 4. Puncture mechanism; 41. Puncture sampling needle; 42. Puncture pipeline guide plate;

[0040] 5. Cleaning swab; 51. Cleaning cavity; 52. Upper cavity; 521. Snap groove; 522. Snap ring; 53. Middle cavity; 531. Liquid inlet pipe joint; 532. Liquid outlet pipe joint; 54. Base; 55. First cleaning pipe guide plate; 56. Second cleaning pipe guide plate;

[0041] 61. Reset detection optocoupler; 62. Sampling needle in place detection optocoupler; 621. Peripheral blood sampling needle in place detection optocoupler; 622. Venous blood sampling needle in place detection optocoupler. DETAILED DESCRIPTION

[0042] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the present invention are further explained below with reference to the accompanying drawings and through specific implementation methods.

[0043] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] The present embodiment provides a slide pusher, including a puncture sampling device, which is fixed on the body of the slide pusher and is used to puncture the cap of a blood sample collection tube to collect the sample in the test tube, and draw the collected sample to a sampling needle through a pipeline, so as to add the sample to the glass slide through the sampling needle.

[0045] In order to improve the accuracy of the puncture sampling device, the film pusher in the prior art leads to a complex processing structure of the puncture sampling device and high cost.

[0046] In order to solve the above technical problems, Figure 1 and Figure 2 As shown, this embodiment provides a puncture sampling device, including a mounting mechanism 1, a driving mechanism 2, a slide 3 and a puncture mechanism 4. The mounting mechanism 1 includes a driving mounting seat 11 and a puncture sampling base 12 which are separately arranged, which reduces the processing difficulty of the mounting mechanism 1. The driving mounting seat 11 is connected to one end of the puncture sampling base 12 for installing the driving mechanism 2. The driving mechanism 2 includes a driving motor 21 and a transmission assembly, and the transmission assembly includes a lead screw 22 and a lead screw nut 23. The driving motor 21 is fixed to the driving mounting seat 11. The end of the lead screw 22 close to the driving motor 21 is provided with a connecting structure. The main shaft of the driving motor 21 is connected to the lead screw 22 through the connecting structure. The end of the lead screw 22 away from the driving motor 21 is rotatably connected to the puncture sampling base 12, and the lead screw 22 is transmission-connected to the lead screw nut 23. Compared with the integrated stepping screw motor in the prior art, the driving motor 21 is an ordinary rotating motor, and the cost is much lower than that of the stepping screw motor. The slide 3 is slidably arranged on the puncture sampling base 12, and one end of the slide 3 is connected to the lead screw nut 23. The puncture mechanism 4 is connected to the other end of the slide 3. A connection structure is processed at one end of the lead screw 22, and the connection structure is a structure similar to a coupling, so that the lead screw 22 can be connected to the main shaft of the drive motor 21, and the lead screw 22 is connected to the lead screw nut 23 in a transmission manner, so that the drive motor 21 drives the lead screw 22 to rotate, the lead screw 22 drives the lead screw nut 23 to make a linear motion, and drives the puncture mechanism 4 to make a linear motion through the slide 3, so as to perform puncture and collect samples, thereby improving the accuracy of the puncture sampling device and greatly reducing the cost. In other embodiments, a finished coupling can also be connected to one end of the lead screw 22, and the lead screw 22 is connected to the main shaft of the drive motor 21 through the coupling.

[0047] like Figure 3 As shown, the puncture sampling device is fixed to the body of the tablet pusher through the mounting mechanism 1, and a positioning pin 120 and a fixing hole are provided on the puncture sampling base 12, and the positioning pin 120 is used to position the puncture sampling device. Two positioning pins 120 are arranged at intervals on the puncture sampling base 12, and two first positioning holes are provided on the body of the tablet pusher. The two positioning pins 120 correspond to the two first positioning holes one by one to achieve accurate positioning of the puncture sampling device on the body.

[0048] The fixing hole is set as a gourd hole 129, and the first fastening screw fixes the puncture sampling base 12 through the small hole of the gourd hole 129. Moving the puncture sampling base 12 can move the first fastening screw to the large hole of the gourd hole 129 to disassemble the puncture sampling device. There are four gourd holes 129, and the four gourd holes 129 are divided into two groups, two gourd holes 129 are a group, and the two groups of gourd holes 129 are respectively located on both sides of the two positioning pins 120. When fixing the puncture sampling base 12, the first fastening screw is matched and fixed with the small hole of the gourd hole 129. When disassembling the puncture sampling device, first loosen the first fastening screw, move the puncture sampling base 12 upward, so that the positioning pin 120 is disengaged from the first positioning hole, and then translate the puncture sampling base 12 so that the first fastening screw moves to the large hole of the gourd hole 129, and finally move the puncture sampling base 12 upward, so that the puncture sampling device can be removed from the body, without completely removing the first fastening screw, which is convenient for disassembly and assembly.

[0049] In order to reduce cross-contamination of samples, Figure 2 and Figure 4 As shown, the puncture sampling device provided in this embodiment also includes a cleaning swab 5 and a cleaning swab mounting seat 13. The cleaning swab mounting seat 13 is connected to the end of the puncture sampling base 12 away from the driving mounting seat 11. The cleaning swab 5 is mounted on the cleaning swab mounting seat 13. The puncture mechanism 4 includes a puncture sampling needle 41. The cleaning swab 5 and the puncture sampling needle 41 are arranged opposite to each other so that the driving mechanism 2 drives the puncture sampling needle 41 to pass through the cleaning swab 5. When the puncture sampling device is sampling, the sample test tube is located below the cleaning swab mounting seat 13. The driving mechanism 2 drives the puncture sampling needle 41 to pass through the cleaning swab 5 and then punctures the test tube cap to collect the sample in the test tube. The cleaning swab 5 is used to clean the puncture sampling needle 41 after each sampling to reduce cross contamination of the sample.

[0050] Furthermore, the puncture mechanism 4 also includes a puncture pipeline guide plate 42, the puncture sampling needle 41 is arranged on the puncture pipeline guide plate 42, and the puncture pipeline guide plate 42 is connected to the slide 3; the puncture pipeline guide plate 42 is used to provide guidance for the pipeline connected to the puncture sampling needle 41. By providing the puncture pipeline guide plate 42, the pipeline connected to the puncture sampling needle 41 is prevented from bending during the up and down movement of the puncture sampling needle 41, thereby increasing the service life of the pipeline.

[0051] In this embodiment, the puncture pipeline guide plate 42 includes a first connecting plate and a second connecting plate connected vertically, and the pipeline connected to the puncture sampling needle 41 is placed in the vertical angle formed between the first connecting plate and the second connecting plate. The first connecting plate and the second connecting plate are provided with a clamping groove on the side away from each other. The two ends of the cable tie are respectively placed in the clamping grooves arranged oppositely, and then tightened to fix the pipeline connected to the puncture sampling needle 41 in the puncture pipeline guide plate 42. The end of the slide 3 close to the puncture pipeline guide plate 42 is provided with a first threaded hole, and the puncture pipeline guide plate 42 is provided with a first connecting hole, and the screw passes through the first connecting hole and is screwed and fixed with the first threaded hole. The puncture sampling needle 41 is fixed in the puncture pipeline guide plate 42 by a fixing block.

[0052] Specifically, the cleaning swab 5 includes a cleaning cavity 51, an upper cavity 52, a middle cavity 53, a base 54 and a pipeline joint. The middle cavity 53 is arranged between the base 54 and the upper cavity 52. ​​The cleaning cavity 51 passes through the upper cavity 52, the middle cavity 53 and the base 54. The outer wall of the upper cavity 52 is a circumferential surface, and the outer wall of the middle cavity 53 includes multiple side surfaces. The puncture sampling needle 41 passes through the cleaning cavity 51 when descending to collect the sample in the test tube and when resetting after collecting the sample. The pipeline joint is arranged in the circumference of the middle cavity 53 and is connected to the cleaning cavity 51. The pipeline joint is used to connect the cleaning liquid delivery pipeline. The cleaning liquid delivery pipeline includes an inlet delivery pipeline and an outlet delivery pipeline, and the pipeline joints include an inlet pipeline joint 531 and an outlet pipeline joint 532. The inlet pipeline joint 531 and the outlet pipeline joint 532 are respectively arranged on two adjacent sides of the middle cavity 53, the inlet pipeline joint 531 is connected to the inlet delivery pipeline, and the outlet pipeline joint 532 is connected to the outlet delivery pipeline. The inlet delivery pipeline is used to deliver cleaning liquid to the cleaning cavity 51 through the inlet pipeline joint 531 when the puncture sampling needle 41 is reset after collecting the sample. After cleaning the puncture sampling needle 41, the cleaning liquid flows to the outlet delivery pipeline through the outlet pipeline joint 532 and is discharged through the outlet delivery pipeline.

[0053] Combination Figure 2 , Figure 4 , Figure 5 and Figure 8As shown, the cleaning swab mounting seat 13 is provided with a mounting hole 134 and a limiting structure, and the limiting structure is located in the circumference of the mounting hole 134; the upper cavity 52 protrudes from the middle cavity 53, and the upper cavity 52 is fixed in the mounting hole 134. The limiting structure cooperates with the outer periphery of the middle cavity 53 to limit the rotation of the cleaning swab 5. In this embodiment, the limiting structure is two limiting pins 135, and the two limiting pins 135 are both in contact with the same side of the middle cavity 53 to prevent the cleaning swab 5 from rotating, so as to ensure that the cleaning effect to the target value is achieved. A clamping groove 521 is provided on the circumferential surface of the upper cavity 52, and the upper cavity 52 is inserted into the mounting hole 134 from the end of the cleaning swab mounting seat 13 away from the puncture sampling base 12, and the clamping groove 521 just exposes the end face of the mounting hole 134 close to the puncture sampling base 12, and then the clamping ring 522 cooperates with the clamping groove 521 to fix the cleaning swab 5 in the mounting hole 134.

[0054] Of course, in other embodiments, the limiting structure may also be configured as a limiting surface that can abut against one of the side surfaces of the middle cavity 53 .

[0055] In addition, a bearing 136 is provided on the cleaning swab mounting seat 13 corresponding to the lead screw 22 , and one end of the lead screw 22 away from the driving motor 21 is connected to the bearing 136 via a connecting shaft, so that the lead screw 22 can rotate relative to the cleaning swab mounting seat 13 .

[0056] Furthermore, the end surface of the mounting hole 134 on one side close to the puncture sampling base 12 is concave, so that the end surface of the upper cavity 52 away from the middle cavity 53 is flush with the end surface of the cleaning swab mounting seat 13 on one side close to the puncture sampling base 12. In order to prevent the puncture sampling device from being disengaged from the snap ring 522 and the snap-in groove 521 due to vibration during transportation, resulting in the loss of the snap ring 522. A baffle 15 is arranged in the circumference of the concave surface of the upper cavity 52, and the baffle 15 forms a barrier on the adjacent two sides of the concave surface to prevent the snap ring 522 from being lost. The baffle 15 includes a first baffle and a second baffle arranged vertically, and the end of the first baffle away from the second baffle is fixed to the side of the puncture sampling base 12 by screws, and a positioning column 137 is arranged on the concave surface, and a second positioning hole is arranged at the end of the second baffle away from the first baffle, and the second positioning hole cooperates with the positioning column 137.

[0057] Furthermore, a cleaning pipeline guide plate is also provided on the cleaning swab mounting seat 13, and the cleaning pipeline guide plate is used to provide guidance for the cleaning liquid delivery pipeline. The cleaning pipeline guide plate includes a first cleaning pipeline guide plate 55 and a second cleaning pipeline guide plate 56, the first cleaning pipeline guide plate 55 is provided on the side of the cleaning swab mounting seat 13 away from the puncture sampling base 12, and the second cleaning pipeline guide plate 56 is provided on the end of the cleaning swab mounting seat 13 away from the cleaning swab 5, and at least two guide grooves are provided on the first cleaning pipeline guide plate 55 and the second cleaning pipeline guide plate 56, and the liquid delivery pipeline is fixed by a pair of oppositely arranged guide grooves on the first cleaning pipeline guide plate 55 and the second cleaning pipeline guide plate 56, and the liquid delivery pipeline is fixed by another pair of oppositely arranged guide grooves on the first cleaning pipeline guide plate 55 and the second cleaning pipeline guide plate 56.

[0058] In order to prevent the driving motor 21 from losing steps and causing the puncture sampling needle 41 to fail to descend to the specified height, resulting in failure in sample collection. The puncture sampling device also includes a reset detection optical coupler 61 and a sampling needle in-place detection optical coupler 62. The reset detection optical coupler 61 is arranged at one end of the puncture sampling base 12 close to the driving mounting seat 11, and the sampling needle in-place detection optical coupler 62 is arranged at one end of the puncture sampling base 12 away from the driving mounting seat 11. A detection feature plate is arranged on the slide 3. When the detection feature plate is opposite to the reset detection optical coupler 61, the reset detection optical coupler 61 sends a feedback signal; when the detection feature plate is opposite to the sampling needle in-place detection optical coupler 62, the sampling needle in-place detection optical coupler 62 sends a feedback signal. According to whether the reset detection optical coupler 61 sends a feedback signal, it is judged whether the puncture sampling needle 41 returns to its original position after collecting the sample, so as to ensure that the height of the puncture sampling needle 41 is consistent each time the sampling is performed. According to whether the sampling needle in-place detection optical coupler 62 sends a feedback signal, it is judged whether the puncture sampling needle 41 descends to the specified height as required, so as to avoid failure in sample collection. The working principle of the detection optocoupler is already known in the prior art and will not be described in detail here.

[0059] Since the puncture sampling device is used to collect both venous blood samples and peripheral blood samples, and the height of the blood sample in the peripheral blood test tube is higher than that of the blood sample in the venous blood test tube, the height of the puncture sampling needle 41 when collecting the venous blood sample is higher than the height of the puncture sampling needle 41 when collecting the peripheral blood sample. The sampling needle in-place detection optical coupler 62 includes a peripheral blood sampling needle in-place detection optical coupler 621 and a venous blood sampling needle in-place detection optical coupler 622. The venous blood sampling needle in-place detection optical coupler 622 is arranged at one end of the puncture sampling base 12 away from the drive mounting seat 11, and the peripheral blood sampling needle in-place detection optical coupler 621 is arranged between the reset detection optical coupler 61 and the venous blood sampling needle in-place detection optical coupler 622.

[0060] In order to realize the installation of the reset detection optocoupler 61, the peripheral blood sampling needle in position detection optocoupler 621 and the venous blood sampling needle in position detection optocoupler 622, the installation mechanism 1 also includes an optocoupler mounting plate 14, which is arranged on the side of the puncture sampling base 12 away from the puncture mechanism 4, and the optocoupler mounting plate 14 is perpendicular to the puncture sampling base 12.

[0061] Since the mounting mechanism 1 is configured as a split structure, in order to avoid large assembly errors between the driving mounting seat 11 and the cleaning swab mounting seat 13 and the puncture sampling base 12, the accuracy of the puncture sampling device is affected.

[0062] like Figure 5 and Figure 6 As shown, in order to reduce the assembly error between the drive mounting seat 11 and the puncture sampling base 12, a positioning recess is provided on one side of the drive mounting seat 11 close to the puncture sampling base 12, and a positioning convex is provided on one end of the puncture sampling base 12 close to the drive mounting seat 11, and the positioning convex cooperates with the positioning recess for positioning. Specifically, the positioning recess includes a positioning bottom surface 111, a first positioning side surface 112 and a second positioning side surface 113, and the first positioning side surface 112 and the second positioning side surface 113 are vertically arranged and respectively arranged on the adjacent two sides of the positioning bottom surface 111; the positioning convex includes a positioning top surface 122, a third positioning side surface 123 and a fourth positioning side surface 124, and the third positioning side surface 123 and the fourth positioning side surface 124 are vertically arranged and respectively located on the adjacent two sides of the positioning top surface 122, and the positioning top surface 122 cooperates with the positioning bottom surface 111, the first positioning side surface 112 cooperates with the third positioning side surface 123, and the second positioning side surface 113 cooperates with the fourth positioning side surface 124. By improving the machining accuracy of the positioning bottom surface 111 , the first positioning side surface 112 , the second positioning side surface 113 , the positioning top surface 122 , the third positioning side surface 123 and the fourth positioning side surface 124 , the assembly error between the drive mounting seat 11 and the puncture sampling base 12 is reduced.

[0063] A through hole 114 is provided on the driving mounting seat 11, and the main shaft of the driving motor 21 passes through the through hole 114. Four second connecting holes are provided circumferentially of the through hole 114. Four second threaded holes are provided on the driving motor 21. The second fastening screw passes through the second connecting hole and is screwed to the second threaded hole to fix the driving motor 21 to the driving mounting seat 11.

[0064] Two third connection holes are provided on the first positioning side surface 112, two third threaded holes are provided on the third positioning side surface 123, and the third fastening screw passes through the third connection holes and is threadedly connected to the third threaded holes. A fourth connection hole is provided on the second positioning side surface 113, a fourth threaded hole is provided on the fourth positioning side surface 124, and a fourth fastening screw passes through the fourth connection hole and is threadedly connected to the fourth threaded hole.

[0065] Furthermore, a guide rail 121 is provided on the puncture sampling base 12, and the guide rail 121 is arranged parallel to the lead screw 22. The slide 3 is slidably arranged on the guide rail 121. Two limit blocks 125 are provided on the puncture sampling base 12, and the two limit blocks 125 are arranged at intervals along the length direction of the puncture sampling base 12. The two limit blocks 125 are used to position the guide rail 121. In order to enable the slide 3 to be connected with the lead screw nut 23, the mounting surface of the puncture sampling base 12 is set as a stepped surface, including a first mounting surface and a second mounting surface, the first mounting surface is set lower than the second mounting surface, the lead screw 22 is arranged above the first mounting surface, and the positioning pin 120 and the fixing hole are both arranged on the first mounting surface, and the guide rail 121 is arranged on the second mounting surface to raise the slide 3 so that the slide 3 can be connected with the lead screw nut 23. In order to ensure the installation accuracy of the puncture mechanism 4, two limit blocks 125 are provided on the side of the second installation surface close to the first installation surface. When the guide rail 121 is installed, one side of the guide rail 121 abuts against the side of the two limit blocks 125 away from the first installation surface to ensure that the guide rail 121 is parallel to the lead screw 22. A plurality of fifth connection holes are arranged at intervals on the second installation surface, and a plurality of fifth threaded holes corresponding to the plurality of fifth connection holes are arranged on the guide rail 121. The fifth fastening screw passes through the fifth connection hole and is screwed to the fifth threaded hole to fix the guide rail 121 to the second installation surface.

[0066] In order to ensure the installation accuracy of the cleaning swab mounting base 13 and the puncture sampling base 12, as shown in FIG. Figure 7 and Figure 8 As shown, a positioning step is provided at one end of the puncture sampling base 12 close to the cleaning swab mounting seat 13, and a positioning notch that cooperates with the positioning step is provided on the cleaning swab mounting seat 13. Specifically, the positioning step includes a positioning support surface 126, a positioning leaning surface 127 and a fifth positioning side surface 128, the positioning leaning surface 127 and the fifth positioning side surface 128 are both perpendicular to the positioning support surface 126, and the positioning leaning surface 127 and the fifth positioning side surface 128 are respectively located on the adjacent two sides of the positioning support surface 126; the positioning notch includes a first positioning notch side wall 131, a second positioning notch side wall 132 and a positioning notch end face 133, the first positioning notch side wall 131 and the second positioning notch side wall 132 are perpendicular, and the positioning notch end face 133 and the first positioning notch side wall 131 and the second positioning notch side wall 132 are both perpendicular; the positioning support surface 126 cooperates with the first positioning notch side wall 131, the positioning leaning surface 127 cooperates with the positioning notch end face 133, and the fifth positioning side face 128 cooperates with the second positioning notch side wall 132. By improving the machining accuracy of the positioning support surface 126 , the positioning support surface 127 , the fifth positioning side surface 128 , the first positioning notch side wall 131 , the second positioning notch side wall 132 and the positioning notch end surface 133 , the assembly error between the cleaning swab mounting seat 13 and the puncture sampling base 12 is reduced.

[0067] Two sixth connecting holes are provided on the positioning support surface 126 , and two sixth threaded holes are provided on the first positioning notch side wall 131 . The sixth fastening screw passes through the sixth connecting hole and is screwed to the sixth threaded hole to fix the cleaning swab mounting seat 13 on the puncture sampling base 12 .

[0068] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A puncture sampling device, characterized in that: include: The mounting mechanism comprises a driving mounting seat and a puncture sampling base, wherein the driving mounting seat is connected to one end of the puncture sampling base; The driving mechanism comprises a driving motor and a transmission assembly, wherein the transmission assembly comprises a lead screw and a lead screw nut, wherein the driving motor is fixed to the driving mounting seat, a connecting structure is arranged at one end of the lead screw close to the driving motor, a main shaft of the driving motor is connected to the lead screw through the connecting structure, and one end of the lead screw away from the driving motor is rotatably connected to the puncture sampling base; the lead screw is drivingly connected to the lead screw nut; A slide seat, wherein the slide seat is slidably disposed on the puncture sampling base, and one end of the slide seat is connected to the lead screw nut; A puncture mechanism is connected to the other end of the slide.

2. The puncture sampling device according to claim 1, characterized in that: A positioning recess is provided on one side of the drive mounting seat close to the puncture sampling base, and a positioning protrusion is provided on one end of the puncture sampling base close to the drive mounting seat, and the positioning protrusion cooperates with the positioning recess for positioning; The positioning recess includes a positioning bottom surface, a first positioning side surface and a second positioning side surface, the first positioning side surface and the second positioning side surface are vertically arranged and respectively arranged on the adjacent two sides of the positioning bottom surface; the positioning protrusion includes a positioning top surface, a third positioning side surface and a fourth positioning side surface, the third positioning side surface and the fourth positioning side surface are vertically arranged and respectively located on the adjacent two sides of the positioning top surface, the positioning top surface cooperates with the positioning bottom surface, the first positioning side surface cooperates with the third positioning side surface, and the second positioning side surface cooperates with the fourth positioning side surface.

3. The puncture sampling device according to claim 1, characterized in that: A guide rail is arranged on the puncture sampling base, the guide rail is arranged parallel to the lead screw, and the slide is slidably arranged on the guide rail; two limit blocks are arranged on the puncture sampling base, the two limit blocks are arranged at intervals along the length direction of the puncture sampling base, and the two limit blocks are used to position the guide rail.

4. The puncture sampling device according to claim 1, characterized in that: The puncture sampling device also includes a cleaning swab and a cleaning swab mounting seat. The cleaning swab mounting seat is connected to one end of the puncture sampling base away from the driving mounting seat. The cleaning swab is mounted on the cleaning swab mounting seat. The puncture mechanism includes a puncture sampling needle. The cleaning swab and the puncture sampling needle are arranged opposite to each other so that the driving mechanism drives the puncture sampling needle to pass through the cleaning swab.

5. The puncture sampling device according to claim 4, characterized in that: A positioning step is provided at one end of the puncture sampling base close to the cleaning swab mounting seat, and a positioning notch that cooperates with the positioning step is provided on the cleaning swab mounting seat; The positioning step includes a positioning support surface, a positioning leaning surface and a fifth positioning side surface, the positioning leaning surface and the fifth positioning side surface are both perpendicular to the positioning support surface, and the positioning leaning surface and the fifth positioning side surface are respectively located on two adjacent sides of the positioning support surface; the positioning notch includes a first positioning notch side wall, a second positioning notch side wall and a positioning notch end face, the first positioning notch side wall and the second positioning notch side wall are perpendicular, and the positioning notch end face is perpendicular to both the first positioning notch side wall and the second positioning notch side wall; the positioning support surface cooperates with the first positioning notch side wall, the positioning leaning surface cooperates with the positioning notch end face, and the fifth positioning side surface cooperates with the second positioning notch side wall.

6. The puncture sampling device according to claim 4, characterized in that: The cleaning swab mounting seat is provided with a mounting hole and a limiting structure, and the limiting structure is located in the circumference of the mounting hole; The cleaning swab includes a cleaning cavity, an upper cavity, a middle cavity and a base, the middle cavity is arranged between the base and the upper cavity, the cleaning cavity passes through the upper cavity, the middle cavity and the base, the upper cavity protrudes from the middle cavity, the upper cavity is fixed in the mounting hole, and the limiting structure cooperates with the outer periphery of the middle cavity to limit the rotation of the cleaning swab.

7. The puncture sampling device according to claim 6, characterized in that: The puncture mechanism also includes a puncture pipeline guide plate, the puncture sampling needle is arranged on the puncture pipeline guide plate, and the puncture pipeline guide plate is connected to the slide seat; the puncture pipeline guide plate is used to provide guidance for the pipeline connected to the puncture sampling needle; And / or, the cleaning swab also includes a pipe joint, which is arranged in the circumference of the middle cavity and is connected to the cleaning cavity, and the pipe joint is used to connect the cleaning liquid delivery pipeline; the cleaning swab mounting seat is also provided with a cleaning pipeline guide plate, and the cleaning pipeline guide plate is used to provide guidance for the cleaning liquid delivery pipeline.

8. The puncture sampling device according to any one of claims 1 to 7, characterized in that: The puncture sampling device also includes a reset detection optocoupler and a sampling needle in-position detection optocoupler, the reset detection optocoupler is arranged at one end of the puncture sampling base close to the drive mounting seat, and the sampling needle in-position detection optocoupler is arranged at one end of the puncture sampling base away from the drive mounting seat, and a detection feature plate is arranged on the slide seat, when the detection feature plate is opposite to the reset detection optocoupler, the reset detection optocoupler sends a feedback signal; when the detection feature plate is opposite to the sampling needle in-position detection optocoupler, the sampling needle in-position detection optocoupler sends a feedback signal.

9. The puncture sampling device according to any one of claims 1 to 7, characterized in that: The puncture sampling base is provided with a positioning pin and a fixing hole, and the positioning pin is used to position the puncture sampling device; the fixing hole is set as a gourd hole, and the first fastening screw is used to fix the puncture sampling base through the small hole of the gourd hole. Moving the puncture sampling base can move the first fastening screw to the large hole of the gourd hole to disassemble the puncture sampling device.

10. A film pusher, characterized in that: It comprises the puncture sampling device as described in any one of claims 1 to 9.

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